Commit | Line | Data |
---|---|---|
b46a6a83 | 1 | /* Utility and Unix shadow routines for GNU Emacs on the Microsoft Windows API. |
acaf905b | 2 | Copyright (C) 1994-1995, 2000-2012 Free Software Foundation, Inc. |
95ed0025 | 3 | |
3b7ad313 EN |
4 | This file is part of GNU Emacs. |
5 | ||
9ec0b715 | 6 | GNU Emacs is free software: you can redistribute it and/or modify |
3b7ad313 | 7 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
8 | the Free Software Foundation, either version 3 of the License, or |
9 | (at your option) any later version. | |
3b7ad313 EN |
10 | |
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 17 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
95ed0025 | 18 | |
9ec0b715 | 19 | /* |
95ed0025 RS |
20 | Geoff Voelker (voelker@cs.washington.edu) 7-29-94 |
21 | */ | |
76b3903d | 22 | #include <stddef.h> /* for offsetof */ |
95ed0025 RS |
23 | #include <stdlib.h> |
24 | #include <stdio.h> | |
ad9e2d54 | 25 | #include <float.h> /* for DBL_EPSILON */ |
95ed0025 | 26 | #include <io.h> |
480b0c5b | 27 | #include <errno.h> |
95ed0025 RS |
28 | #include <fcntl.h> |
29 | #include <ctype.h> | |
480b0c5b | 30 | #include <signal.h> |
b3308d2e | 31 | #include <sys/file.h> |
480b0c5b | 32 | #include <sys/time.h> |
16bb7578 | 33 | #include <sys/utime.h> |
7c80d5ec | 34 | #include <math.h> |
97a93095 | 35 | #include <time.h> |
480b0c5b GV |
36 | |
37 | /* must include CRT headers *before* config.h */ | |
4838e624 | 38 | |
4838e624 | 39 | #include <config.h> |
0fda9b75 | 40 | #include <mbstring.h> /* for _mbspbrk */ |
4838e624 | 41 | |
480b0c5b GV |
42 | #undef access |
43 | #undef chdir | |
44 | #undef chmod | |
45 | #undef creat | |
46 | #undef ctime | |
47 | #undef fopen | |
48 | #undef link | |
49 | #undef mkdir | |
50 | #undef mktemp | |
51 | #undef open | |
52 | #undef rename | |
53 | #undef rmdir | |
54 | #undef unlink | |
55 | ||
56 | #undef close | |
57 | #undef dup | |
58 | #undef dup2 | |
59 | #undef pipe | |
60 | #undef read | |
61 | #undef write | |
95ed0025 | 62 | |
d8fcc1b9 AI |
63 | #undef strerror |
64 | ||
97a93095 EZ |
65 | #undef localtime |
66 | ||
95ed0025 | 67 | #include "lisp.h" |
95ed0025 RS |
68 | |
69 | #include <pwd.h> | |
3d19b645 | 70 | #include <grp.h> |
95ed0025 | 71 | |
971bce75 AI |
72 | #ifdef __GNUC__ |
73 | #define _ANONYMOUS_UNION | |
74 | #define _ANONYMOUS_STRUCT | |
75 | #endif | |
480b0c5b | 76 | #include <windows.h> |
b8526f6e EZ |
77 | /* Some versions of compiler define MEMORYSTATUSEX, some don't, so we |
78 | use a different name to avoid compilation problems. */ | |
79 | typedef struct _MEMORY_STATUS_EX { | |
bedf4aab JB |
80 | DWORD dwLength; |
81 | DWORD dwMemoryLoad; | |
82 | DWORDLONG ullTotalPhys; | |
83 | DWORDLONG ullAvailPhys; | |
84 | DWORDLONG ullTotalPageFile; | |
85 | DWORDLONG ullAvailPageFile; | |
86 | DWORDLONG ullTotalVirtual; | |
87 | DWORDLONG ullAvailVirtual; | |
88 | DWORDLONG ullAvailExtendedVirtual; | |
b8526f6e | 89 | } MEMORY_STATUS_EX,*LPMEMORY_STATUS_EX; |
7c80d5ec | 90 | |
634d3003 | 91 | #include <lmcons.h> |
2d5324c5 | 92 | #include <shlobj.h> |
00b3b7b3 | 93 | |
7c80d5ec EZ |
94 | #include <tlhelp32.h> |
95 | #include <psapi.h> | |
a6fc3b5c | 96 | #ifndef _MSC_VER |
69e847be | 97 | #include <w32api.h> |
a6fc3b5c | 98 | #endif |
5e617bc2 | 99 | #if !defined (__MINGW32__) || __W32API_MAJOR_VERSION < 3 || (__W32API_MAJOR_VERSION == 3 && __W32API_MINOR_VERSION < 15) |
7c80d5ec | 100 | /* This either is not in psapi.h or guarded by higher value of |
a6d3e72e | 101 | _WIN32_WINNT than what we use. w32api supplied with MinGW 3.15 |
69e847be | 102 | defines it in psapi.h */ |
7c80d5ec | 103 | typedef struct _PROCESS_MEMORY_COUNTERS_EX { |
bedf4aab JB |
104 | DWORD cb; |
105 | DWORD PageFaultCount; | |
106 | DWORD PeakWorkingSetSize; | |
107 | DWORD WorkingSetSize; | |
108 | DWORD QuotaPeakPagedPoolUsage; | |
109 | DWORD QuotaPagedPoolUsage; | |
110 | DWORD QuotaPeakNonPagedPoolUsage; | |
111 | DWORD QuotaNonPagedPoolUsage; | |
112 | DWORD PagefileUsage; | |
113 | DWORD PeakPagefileUsage; | |
114 | DWORD PrivateUsage; | |
7c80d5ec | 115 | } PROCESS_MEMORY_COUNTERS_EX,*PPROCESS_MEMORY_COUNTERS_EX; |
69e847be | 116 | #endif |
7c80d5ec | 117 | |
6dad7178 EZ |
118 | #include <winioctl.h> |
119 | #include <aclapi.h> | |
120 | ||
121 | #ifdef _MSC_VER | |
122 | /* MSVC doesn't provide the definition of REPARSE_DATA_BUFFER, except | |
123 | on ntifs.h, which cannot be included because it triggers conflicts | |
124 | with other Windows API headers. So we define it here by hand. */ | |
125 | ||
126 | typedef struct _REPARSE_DATA_BUFFER { | |
127 | ULONG ReparseTag; | |
128 | USHORT ReparseDataLength; | |
129 | USHORT Reserved; | |
130 | union { | |
131 | struct { | |
132 | USHORT SubstituteNameOffset; | |
133 | USHORT SubstituteNameLength; | |
134 | USHORT PrintNameOffset; | |
135 | USHORT PrintNameLength; | |
136 | ULONG Flags; | |
137 | WCHAR PathBuffer[1]; | |
138 | } SymbolicLinkReparseBuffer; | |
139 | struct { | |
140 | USHORT SubstituteNameOffset; | |
141 | USHORT SubstituteNameLength; | |
142 | USHORT PrintNameOffset; | |
143 | USHORT PrintNameLength; | |
144 | WCHAR PathBuffer[1]; | |
145 | } MountPointReparseBuffer; | |
146 | struct { | |
147 | UCHAR DataBuffer[1]; | |
148 | } GenericReparseBuffer; | |
149 | } DUMMYUNIONNAME; | |
150 | } REPARSE_DATA_BUFFER, *PREPARSE_DATA_BUFFER; | |
151 | ||
152 | #endif | |
153 | ||
7d701334 | 154 | /* TCP connection support. */ |
480b0c5b GV |
155 | #include <sys/socket.h> |
156 | #undef socket | |
157 | #undef bind | |
158 | #undef connect | |
159 | #undef htons | |
160 | #undef ntohs | |
161 | #undef inet_addr | |
162 | #undef gethostname | |
163 | #undef gethostbyname | |
164 | #undef getservbyname | |
ecd270eb | 165 | #undef getpeername |
380961a6 | 166 | #undef shutdown |
962955c5 JR |
167 | #undef setsockopt |
168 | #undef listen | |
169 | #undef getsockname | |
170 | #undef accept | |
171 | #undef recvfrom | |
172 | #undef sendto | |
00b3b7b3 | 173 | |
489f9371 | 174 | #include "w32.h" |
480b0c5b | 175 | #include "ndir.h" |
501199a3 | 176 | #include "w32common.h" |
489f9371 | 177 | #include "w32heap.h" |
253574a6 | 178 | #include "systime.h" |
f481eb31 | 179 | #include "dispextern.h" /* for xstrcasecmp */ |
7c80d5ec | 180 | #include "coding.h" /* for Vlocale_coding_system */ |
253574a6 | 181 | |
973f782d EZ |
182 | #include "careadlinkat.h" |
183 | #include "allocator.h" | |
184 | ||
1eb8fd91 | 185 | /* For serial_configure and serial_open. */ |
d888760c | 186 | #include "process.h" |
d888760c | 187 | |
2d5324c5 JR |
188 | typedef HRESULT (WINAPI * ShGetFolderPath_fn) |
189 | (IN HWND, IN int, IN HANDLE, IN DWORD, OUT char *); | |
190 | ||
0898ca10 JB |
191 | Lisp_Object QCloaded_from; |
192 | ||
b56ceb92 | 193 | void globals_of_w32 (void); |
8aaaec6b | 194 | static DWORD get_rid (PSID); |
6dad7178 EZ |
195 | static int is_symlink (const char *); |
196 | static char * chase_symlinks (const char *); | |
197 | static int enable_privilege (LPCTSTR, BOOL, TOKEN_PRIVILEGES *); | |
198 | static int restore_privilege (TOKEN_PRIVILEGES *); | |
199 | static BOOL WINAPI revert_to_self (void); | |
9785d95b | 200 | |
18e070ac | 201 | \f |
9d95a291 EZ |
202 | /* Initialization states. |
203 | ||
204 | WARNING: If you add any more such variables for additional APIs, | |
205 | you MUST add initialization for them to globals_of_w32 | |
206 | below. This is because these variables might get set | |
207 | to non-NULL values during dumping, but the dumped Emacs | |
208 | cannot reuse those values, because it could be run on a | |
209 | different version of the OS, where API addresses are | |
210 | different. */ | |
9785d95b BK |
211 | static BOOL g_b_init_is_windows_9x; |
212 | static BOOL g_b_init_open_process_token; | |
213 | static BOOL g_b_init_get_token_information; | |
214 | static BOOL g_b_init_lookup_account_sid; | |
c617afce EZ |
215 | static BOOL g_b_init_get_sid_sub_authority; |
216 | static BOOL g_b_init_get_sid_sub_authority_count; | |
6dad7178 | 217 | static BOOL g_b_init_get_security_info; |
8aaaec6b EZ |
218 | static BOOL g_b_init_get_file_security; |
219 | static BOOL g_b_init_get_security_descriptor_owner; | |
220 | static BOOL g_b_init_get_security_descriptor_group; | |
221 | static BOOL g_b_init_is_valid_sid; | |
7c80d5ec EZ |
222 | static BOOL g_b_init_create_toolhelp32_snapshot; |
223 | static BOOL g_b_init_process32_first; | |
224 | static BOOL g_b_init_process32_next; | |
225 | static BOOL g_b_init_open_thread_token; | |
226 | static BOOL g_b_init_impersonate_self; | |
227 | static BOOL g_b_init_revert_to_self; | |
228 | static BOOL g_b_init_get_process_memory_info; | |
229 | static BOOL g_b_init_get_process_working_set_size; | |
230 | static BOOL g_b_init_global_memory_status; | |
231 | static BOOL g_b_init_global_memory_status_ex; | |
f8b35b24 EZ |
232 | static BOOL g_b_init_get_length_sid; |
233 | static BOOL g_b_init_equal_sid; | |
234 | static BOOL g_b_init_copy_sid; | |
ad9e2d54 EZ |
235 | static BOOL g_b_init_get_native_system_info; |
236 | static BOOL g_b_init_get_system_times; | |
6dad7178 | 237 | static BOOL g_b_init_create_symbolic_link; |
9785d95b | 238 | |
f60ae425 BK |
239 | /* |
240 | BEGIN: Wrapper functions around OpenProcessToken | |
241 | and other functions in advapi32.dll that are only | |
242 | supported in Windows NT / 2k / XP | |
243 | */ | |
244 | /* ** Function pointer typedefs ** */ | |
245 | typedef BOOL (WINAPI * OpenProcessToken_Proc) ( | |
246 | HANDLE ProcessHandle, | |
247 | DWORD DesiredAccess, | |
248 | PHANDLE TokenHandle); | |
249 | typedef BOOL (WINAPI * GetTokenInformation_Proc) ( | |
250 | HANDLE TokenHandle, | |
251 | TOKEN_INFORMATION_CLASS TokenInformationClass, | |
252 | LPVOID TokenInformation, | |
253 | DWORD TokenInformationLength, | |
254 | PDWORD ReturnLength); | |
74258518 JR |
255 | typedef BOOL (WINAPI * GetProcessTimes_Proc) ( |
256 | HANDLE process_handle, | |
257 | LPFILETIME creation_time, | |
258 | LPFILETIME exit_time, | |
259 | LPFILETIME kernel_time, | |
260 | LPFILETIME user_time); | |
261 | ||
262 | GetProcessTimes_Proc get_process_times_fn = NULL; | |
263 | ||
f60ae425 BK |
264 | #ifdef _UNICODE |
265 | const char * const LookupAccountSid_Name = "LookupAccountSidW"; | |
8aaaec6b | 266 | const char * const GetFileSecurity_Name = "GetFileSecurityW"; |
f60ae425 BK |
267 | #else |
268 | const char * const LookupAccountSid_Name = "LookupAccountSidA"; | |
8aaaec6b | 269 | const char * const GetFileSecurity_Name = "GetFileSecurityA"; |
f60ae425 BK |
270 | #endif |
271 | typedef BOOL (WINAPI * LookupAccountSid_Proc) ( | |
272 | LPCTSTR lpSystemName, | |
273 | PSID Sid, | |
274 | LPTSTR Name, | |
275 | LPDWORD cbName, | |
276 | LPTSTR DomainName, | |
277 | LPDWORD cbDomainName, | |
278 | PSID_NAME_USE peUse); | |
c617afce EZ |
279 | typedef PDWORD (WINAPI * GetSidSubAuthority_Proc) ( |
280 | PSID pSid, | |
281 | DWORD n); | |
282 | typedef PUCHAR (WINAPI * GetSidSubAuthorityCount_Proc) ( | |
283 | PSID pSid); | |
6dad7178 EZ |
284 | typedef DWORD (WINAPI * GetSecurityInfo_Proc) ( |
285 | HANDLE handle, | |
286 | SE_OBJECT_TYPE ObjectType, | |
287 | SECURITY_INFORMATION SecurityInfo, | |
288 | PSID *ppsidOwner, | |
289 | PSID *ppsidGroup, | |
290 | PACL *ppDacl, | |
291 | PACL *ppSacl, | |
292 | PSECURITY_DESCRIPTOR *ppSecurityDescriptor); | |
8aaaec6b EZ |
293 | typedef BOOL (WINAPI * GetFileSecurity_Proc) ( |
294 | LPCTSTR lpFileName, | |
295 | SECURITY_INFORMATION RequestedInformation, | |
296 | PSECURITY_DESCRIPTOR pSecurityDescriptor, | |
297 | DWORD nLength, | |
298 | LPDWORD lpnLengthNeeded); | |
299 | typedef BOOL (WINAPI * GetSecurityDescriptorOwner_Proc) ( | |
300 | PSECURITY_DESCRIPTOR pSecurityDescriptor, | |
301 | PSID *pOwner, | |
302 | LPBOOL lpbOwnerDefaulted); | |
303 | typedef BOOL (WINAPI * GetSecurityDescriptorGroup_Proc) ( | |
304 | PSECURITY_DESCRIPTOR pSecurityDescriptor, | |
305 | PSID *pGroup, | |
306 | LPBOOL lpbGroupDefaulted); | |
307 | typedef BOOL (WINAPI * IsValidSid_Proc) ( | |
308 | PSID sid); | |
7c80d5ec EZ |
309 | typedef HANDLE (WINAPI * CreateToolhelp32Snapshot_Proc) ( |
310 | DWORD dwFlags, | |
311 | DWORD th32ProcessID); | |
312 | typedef BOOL (WINAPI * Process32First_Proc) ( | |
313 | HANDLE hSnapshot, | |
314 | LPPROCESSENTRY32 lppe); | |
315 | typedef BOOL (WINAPI * Process32Next_Proc) ( | |
316 | HANDLE hSnapshot, | |
317 | LPPROCESSENTRY32 lppe); | |
318 | typedef BOOL (WINAPI * OpenThreadToken_Proc) ( | |
319 | HANDLE ThreadHandle, | |
320 | DWORD DesiredAccess, | |
321 | BOOL OpenAsSelf, | |
322 | PHANDLE TokenHandle); | |
323 | typedef BOOL (WINAPI * ImpersonateSelf_Proc) ( | |
324 | SECURITY_IMPERSONATION_LEVEL ImpersonationLevel); | |
325 | typedef BOOL (WINAPI * RevertToSelf_Proc) (void); | |
326 | typedef BOOL (WINAPI * GetProcessMemoryInfo_Proc) ( | |
327 | HANDLE Process, | |
328 | PPROCESS_MEMORY_COUNTERS ppsmemCounters, | |
329 | DWORD cb); | |
330 | typedef BOOL (WINAPI * GetProcessWorkingSetSize_Proc) ( | |
331 | HANDLE hProcess, | |
332 | DWORD * lpMinimumWorkingSetSize, | |
333 | DWORD * lpMaximumWorkingSetSize); | |
334 | typedef BOOL (WINAPI * GlobalMemoryStatus_Proc) ( | |
335 | LPMEMORYSTATUS lpBuffer); | |
336 | typedef BOOL (WINAPI * GlobalMemoryStatusEx_Proc) ( | |
b8526f6e | 337 | LPMEMORY_STATUS_EX lpBuffer); |
f8b35b24 EZ |
338 | typedef BOOL (WINAPI * CopySid_Proc) ( |
339 | DWORD nDestinationSidLength, | |
340 | PSID pDestinationSid, | |
341 | PSID pSourceSid); | |
342 | typedef BOOL (WINAPI * EqualSid_Proc) ( | |
343 | PSID pSid1, | |
344 | PSID pSid2); | |
345 | typedef DWORD (WINAPI * GetLengthSid_Proc) ( | |
346 | PSID pSid); | |
ad9e2d54 EZ |
347 | typedef void (WINAPI * GetNativeSystemInfo_Proc) ( |
348 | LPSYSTEM_INFO lpSystemInfo); | |
349 | typedef BOOL (WINAPI * GetSystemTimes_Proc) ( | |
350 | LPFILETIME lpIdleTime, | |
351 | LPFILETIME lpKernelTime, | |
352 | LPFILETIME lpUserTime); | |
6dad7178 EZ |
353 | typedef BOOLEAN (WINAPI *CreateSymbolicLink_Proc) ( |
354 | LPTSTR lpSymlinkFileName, | |
355 | LPTSTR lpTargetFileName, | |
356 | DWORD dwFlags); | |
f8b35b24 | 357 | |
f60ae425 | 358 | /* ** A utility function ** */ |
9bfb11f9 | 359 | static BOOL |
b56ceb92 | 360 | is_windows_9x (void) |
f60ae425 | 361 | { |
bedf4aab | 362 | static BOOL s_b_ret = 0; |
f60ae425 | 363 | OSVERSIONINFO os_ver; |
9785d95b | 364 | if (g_b_init_is_windows_9x == 0) |
f60ae425 | 365 | { |
9785d95b | 366 | g_b_init_is_windows_9x = 1; |
ed3751c8 JB |
367 | ZeroMemory (&os_ver, sizeof (OSVERSIONINFO)); |
368 | os_ver.dwOSVersionInfoSize = sizeof (OSVERSIONINFO); | |
9785d95b BK |
369 | if (GetVersionEx (&os_ver)) |
370 | { | |
371 | s_b_ret = (os_ver.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS); | |
372 | } | |
f60ae425 | 373 | } |
9785d95b | 374 | return s_b_ret; |
f60ae425 BK |
375 | } |
376 | ||
d35af63c PE |
377 | static Lisp_Object ltime (ULONGLONG); |
378 | ||
74258518 | 379 | /* Get total user and system times for get-internal-run-time. |
d35af63c | 380 | Returns a list of integers if the times are provided by the OS |
74258518 JR |
381 | (NT derivatives), otherwise it returns the result of current-time. */ |
382 | Lisp_Object | |
b56ceb92 | 383 | w32_get_internal_run_time (void) |
74258518 JR |
384 | { |
385 | if (get_process_times_fn) | |
386 | { | |
387 | FILETIME create, exit, kernel, user; | |
ed3751c8 | 388 | HANDLE proc = GetCurrentProcess (); |
74258518 JR |
389 | if ((*get_process_times_fn) (proc, &create, &exit, &kernel, &user)) |
390 | { | |
391 | LARGE_INTEGER user_int, kernel_int, total; | |
74258518 JR |
392 | user_int.LowPart = user.dwLowDateTime; |
393 | user_int.HighPart = user.dwHighDateTime; | |
394 | kernel_int.LowPart = kernel.dwLowDateTime; | |
395 | kernel_int.HighPart = kernel.dwHighDateTime; | |
396 | total.QuadPart = user_int.QuadPart + kernel_int.QuadPart; | |
d35af63c | 397 | return ltime (total.QuadPart); |
74258518 JR |
398 | } |
399 | } | |
400 | ||
401 | return Fcurrent_time (); | |
402 | } | |
403 | ||
f60ae425 BK |
404 | /* ** The wrapper functions ** */ |
405 | ||
bedf4aab JB |
406 | static BOOL WINAPI |
407 | open_process_token (HANDLE ProcessHandle, | |
408 | DWORD DesiredAccess, | |
409 | PHANDLE TokenHandle) | |
f60ae425 | 410 | { |
9785d95b | 411 | static OpenProcessToken_Proc s_pfn_Open_Process_Token = NULL; |
f60ae425 BK |
412 | HMODULE hm_advapi32 = NULL; |
413 | if (is_windows_9x () == TRUE) | |
414 | { | |
415 | return FALSE; | |
416 | } | |
9785d95b BK |
417 | if (g_b_init_open_process_token == 0) |
418 | { | |
419 | g_b_init_open_process_token = 1; | |
420 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
421 | s_pfn_Open_Process_Token = | |
422 | (OpenProcessToken_Proc) GetProcAddress (hm_advapi32, "OpenProcessToken"); | |
423 | } | |
424 | if (s_pfn_Open_Process_Token == NULL) | |
f60ae425 BK |
425 | { |
426 | return FALSE; | |
427 | } | |
428 | return ( | |
9785d95b | 429 | s_pfn_Open_Process_Token ( |
f60ae425 BK |
430 | ProcessHandle, |
431 | DesiredAccess, | |
432 | TokenHandle) | |
433 | ); | |
434 | } | |
435 | ||
bedf4aab JB |
436 | static BOOL WINAPI |
437 | get_token_information (HANDLE TokenHandle, | |
438 | TOKEN_INFORMATION_CLASS TokenInformationClass, | |
439 | LPVOID TokenInformation, | |
440 | DWORD TokenInformationLength, | |
441 | PDWORD ReturnLength) | |
f60ae425 | 442 | { |
9785d95b | 443 | static GetTokenInformation_Proc s_pfn_Get_Token_Information = NULL; |
f60ae425 BK |
444 | HMODULE hm_advapi32 = NULL; |
445 | if (is_windows_9x () == TRUE) | |
446 | { | |
447 | return FALSE; | |
448 | } | |
9785d95b BK |
449 | if (g_b_init_get_token_information == 0) |
450 | { | |
451 | g_b_init_get_token_information = 1; | |
452 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
453 | s_pfn_Get_Token_Information = | |
454 | (GetTokenInformation_Proc) GetProcAddress (hm_advapi32, "GetTokenInformation"); | |
455 | } | |
456 | if (s_pfn_Get_Token_Information == NULL) | |
f60ae425 BK |
457 | { |
458 | return FALSE; | |
459 | } | |
460 | return ( | |
9785d95b | 461 | s_pfn_Get_Token_Information ( |
f60ae425 BK |
462 | TokenHandle, |
463 | TokenInformationClass, | |
464 | TokenInformation, | |
465 | TokenInformationLength, | |
466 | ReturnLength) | |
467 | ); | |
468 | } | |
469 | ||
bedf4aab JB |
470 | static BOOL WINAPI |
471 | lookup_account_sid (LPCTSTR lpSystemName, | |
472 | PSID Sid, | |
473 | LPTSTR Name, | |
474 | LPDWORD cbName, | |
475 | LPTSTR DomainName, | |
476 | LPDWORD cbDomainName, | |
477 | PSID_NAME_USE peUse) | |
f60ae425 | 478 | { |
9785d95b | 479 | static LookupAccountSid_Proc s_pfn_Lookup_Account_Sid = NULL; |
f60ae425 BK |
480 | HMODULE hm_advapi32 = NULL; |
481 | if (is_windows_9x () == TRUE) | |
482 | { | |
483 | return FALSE; | |
484 | } | |
9785d95b BK |
485 | if (g_b_init_lookup_account_sid == 0) |
486 | { | |
487 | g_b_init_lookup_account_sid = 1; | |
488 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
489 | s_pfn_Lookup_Account_Sid = | |
490 | (LookupAccountSid_Proc) GetProcAddress (hm_advapi32, LookupAccountSid_Name); | |
491 | } | |
492 | if (s_pfn_Lookup_Account_Sid == NULL) | |
f60ae425 BK |
493 | { |
494 | return FALSE; | |
495 | } | |
496 | return ( | |
9785d95b | 497 | s_pfn_Lookup_Account_Sid ( |
f60ae425 BK |
498 | lpSystemName, |
499 | Sid, | |
500 | Name, | |
501 | cbName, | |
502 | DomainName, | |
503 | cbDomainName, | |
504 | peUse) | |
505 | ); | |
506 | } | |
507 | ||
bedf4aab JB |
508 | static PDWORD WINAPI |
509 | get_sid_sub_authority (PSID pSid, DWORD n) | |
c617afce EZ |
510 | { |
511 | static GetSidSubAuthority_Proc s_pfn_Get_Sid_Sub_Authority = NULL; | |
6811b9f4 | 512 | static DWORD zero = 0U; |
c617afce EZ |
513 | HMODULE hm_advapi32 = NULL; |
514 | if (is_windows_9x () == TRUE) | |
515 | { | |
6811b9f4 | 516 | return &zero; |
c617afce EZ |
517 | } |
518 | if (g_b_init_get_sid_sub_authority == 0) | |
519 | { | |
520 | g_b_init_get_sid_sub_authority = 1; | |
521 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
522 | s_pfn_Get_Sid_Sub_Authority = | |
523 | (GetSidSubAuthority_Proc) GetProcAddress ( | |
524 | hm_advapi32, "GetSidSubAuthority"); | |
525 | } | |
526 | if (s_pfn_Get_Sid_Sub_Authority == NULL) | |
527 | { | |
6811b9f4 | 528 | return &zero; |
c617afce EZ |
529 | } |
530 | return (s_pfn_Get_Sid_Sub_Authority (pSid, n)); | |
531 | } | |
532 | ||
bedf4aab JB |
533 | static PUCHAR WINAPI |
534 | get_sid_sub_authority_count (PSID pSid) | |
c617afce EZ |
535 | { |
536 | static GetSidSubAuthorityCount_Proc s_pfn_Get_Sid_Sub_Authority_Count = NULL; | |
6811b9f4 | 537 | static UCHAR zero = 0U; |
c617afce EZ |
538 | HMODULE hm_advapi32 = NULL; |
539 | if (is_windows_9x () == TRUE) | |
540 | { | |
6811b9f4 | 541 | return &zero; |
c617afce EZ |
542 | } |
543 | if (g_b_init_get_sid_sub_authority_count == 0) | |
544 | { | |
545 | g_b_init_get_sid_sub_authority_count = 1; | |
546 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
547 | s_pfn_Get_Sid_Sub_Authority_Count = | |
548 | (GetSidSubAuthorityCount_Proc) GetProcAddress ( | |
549 | hm_advapi32, "GetSidSubAuthorityCount"); | |
550 | } | |
551 | if (s_pfn_Get_Sid_Sub_Authority_Count == NULL) | |
552 | { | |
6811b9f4 | 553 | return &zero; |
c617afce EZ |
554 | } |
555 | return (s_pfn_Get_Sid_Sub_Authority_Count (pSid)); | |
556 | } | |
557 | ||
6dad7178 EZ |
558 | static DWORD WINAPI |
559 | get_security_info (HANDLE handle, | |
560 | SE_OBJECT_TYPE ObjectType, | |
561 | SECURITY_INFORMATION SecurityInfo, | |
562 | PSID *ppsidOwner, | |
563 | PSID *ppsidGroup, | |
564 | PACL *ppDacl, | |
565 | PACL *ppSacl, | |
566 | PSECURITY_DESCRIPTOR *ppSecurityDescriptor) | |
567 | { | |
568 | static GetSecurityInfo_Proc s_pfn_Get_Security_Info = NULL; | |
569 | HMODULE hm_advapi32 = NULL; | |
570 | if (is_windows_9x () == TRUE) | |
571 | { | |
572 | return FALSE; | |
573 | } | |
574 | if (g_b_init_get_security_info == 0) | |
575 | { | |
576 | g_b_init_get_security_info = 1; | |
577 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
578 | s_pfn_Get_Security_Info = | |
579 | (GetSecurityInfo_Proc) GetProcAddress ( | |
580 | hm_advapi32, "GetSecurityInfo"); | |
581 | } | |
582 | if (s_pfn_Get_Security_Info == NULL) | |
583 | { | |
584 | return FALSE; | |
585 | } | |
586 | return (s_pfn_Get_Security_Info (handle, ObjectType, SecurityInfo, | |
587 | ppsidOwner, ppsidGroup, ppDacl, ppSacl, | |
588 | ppSecurityDescriptor)); | |
589 | } | |
590 | ||
bedf4aab JB |
591 | static BOOL WINAPI |
592 | get_file_security (LPCTSTR lpFileName, | |
593 | SECURITY_INFORMATION RequestedInformation, | |
594 | PSECURITY_DESCRIPTOR pSecurityDescriptor, | |
595 | DWORD nLength, | |
596 | LPDWORD lpnLengthNeeded) | |
8aaaec6b EZ |
597 | { |
598 | static GetFileSecurity_Proc s_pfn_Get_File_Security = NULL; | |
599 | HMODULE hm_advapi32 = NULL; | |
600 | if (is_windows_9x () == TRUE) | |
601 | { | |
602 | return FALSE; | |
603 | } | |
604 | if (g_b_init_get_file_security == 0) | |
605 | { | |
606 | g_b_init_get_file_security = 1; | |
607 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
608 | s_pfn_Get_File_Security = | |
609 | (GetFileSecurity_Proc) GetProcAddress ( | |
610 | hm_advapi32, GetFileSecurity_Name); | |
611 | } | |
612 | if (s_pfn_Get_File_Security == NULL) | |
613 | { | |
614 | return FALSE; | |
615 | } | |
616 | return (s_pfn_Get_File_Security (lpFileName, RequestedInformation, | |
617 | pSecurityDescriptor, nLength, | |
618 | lpnLengthNeeded)); | |
619 | } | |
620 | ||
bedf4aab JB |
621 | static BOOL WINAPI |
622 | get_security_descriptor_owner (PSECURITY_DESCRIPTOR pSecurityDescriptor, | |
623 | PSID *pOwner, | |
624 | LPBOOL lpbOwnerDefaulted) | |
8aaaec6b EZ |
625 | { |
626 | static GetSecurityDescriptorOwner_Proc s_pfn_Get_Security_Descriptor_Owner = NULL; | |
627 | HMODULE hm_advapi32 = NULL; | |
628 | if (is_windows_9x () == TRUE) | |
629 | { | |
630 | return FALSE; | |
631 | } | |
632 | if (g_b_init_get_security_descriptor_owner == 0) | |
633 | { | |
634 | g_b_init_get_security_descriptor_owner = 1; | |
635 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
636 | s_pfn_Get_Security_Descriptor_Owner = | |
637 | (GetSecurityDescriptorOwner_Proc) GetProcAddress ( | |
638 | hm_advapi32, "GetSecurityDescriptorOwner"); | |
639 | } | |
640 | if (s_pfn_Get_Security_Descriptor_Owner == NULL) | |
641 | { | |
642 | return FALSE; | |
643 | } | |
644 | return (s_pfn_Get_Security_Descriptor_Owner (pSecurityDescriptor, pOwner, | |
645 | lpbOwnerDefaulted)); | |
646 | } | |
647 | ||
bedf4aab JB |
648 | static BOOL WINAPI |
649 | get_security_descriptor_group (PSECURITY_DESCRIPTOR pSecurityDescriptor, | |
650 | PSID *pGroup, | |
651 | LPBOOL lpbGroupDefaulted) | |
8aaaec6b EZ |
652 | { |
653 | static GetSecurityDescriptorGroup_Proc s_pfn_Get_Security_Descriptor_Group = NULL; | |
654 | HMODULE hm_advapi32 = NULL; | |
655 | if (is_windows_9x () == TRUE) | |
656 | { | |
657 | return FALSE; | |
658 | } | |
659 | if (g_b_init_get_security_descriptor_group == 0) | |
660 | { | |
661 | g_b_init_get_security_descriptor_group = 1; | |
662 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
663 | s_pfn_Get_Security_Descriptor_Group = | |
664 | (GetSecurityDescriptorGroup_Proc) GetProcAddress ( | |
665 | hm_advapi32, "GetSecurityDescriptorGroup"); | |
666 | } | |
667 | if (s_pfn_Get_Security_Descriptor_Group == NULL) | |
668 | { | |
669 | return FALSE; | |
670 | } | |
671 | return (s_pfn_Get_Security_Descriptor_Group (pSecurityDescriptor, pGroup, | |
672 | lpbGroupDefaulted)); | |
673 | } | |
674 | ||
bedf4aab JB |
675 | static BOOL WINAPI |
676 | is_valid_sid (PSID sid) | |
8aaaec6b EZ |
677 | { |
678 | static IsValidSid_Proc s_pfn_Is_Valid_Sid = NULL; | |
679 | HMODULE hm_advapi32 = NULL; | |
680 | if (is_windows_9x () == TRUE) | |
681 | { | |
682 | return FALSE; | |
683 | } | |
684 | if (g_b_init_is_valid_sid == 0) | |
685 | { | |
686 | g_b_init_is_valid_sid = 1; | |
687 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
688 | s_pfn_Is_Valid_Sid = | |
689 | (IsValidSid_Proc) GetProcAddress ( | |
690 | hm_advapi32, "IsValidSid"); | |
691 | } | |
692 | if (s_pfn_Is_Valid_Sid == NULL) | |
693 | { | |
694 | return FALSE; | |
695 | } | |
696 | return (s_pfn_Is_Valid_Sid (sid)); | |
697 | } | |
698 | ||
bedf4aab JB |
699 | static BOOL WINAPI |
700 | equal_sid (PSID sid1, PSID sid2) | |
f8b35b24 EZ |
701 | { |
702 | static EqualSid_Proc s_pfn_Equal_Sid = NULL; | |
703 | HMODULE hm_advapi32 = NULL; | |
704 | if (is_windows_9x () == TRUE) | |
705 | { | |
706 | return FALSE; | |
707 | } | |
708 | if (g_b_init_equal_sid == 0) | |
709 | { | |
710 | g_b_init_equal_sid = 1; | |
711 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
712 | s_pfn_Equal_Sid = | |
713 | (EqualSid_Proc) GetProcAddress ( | |
714 | hm_advapi32, "EqualSid"); | |
715 | } | |
716 | if (s_pfn_Equal_Sid == NULL) | |
717 | { | |
718 | return FALSE; | |
719 | } | |
720 | return (s_pfn_Equal_Sid (sid1, sid2)); | |
721 | } | |
722 | ||
bedf4aab JB |
723 | static DWORD WINAPI |
724 | get_length_sid (PSID sid) | |
f8b35b24 EZ |
725 | { |
726 | static GetLengthSid_Proc s_pfn_Get_Length_Sid = NULL; | |
727 | HMODULE hm_advapi32 = NULL; | |
728 | if (is_windows_9x () == TRUE) | |
729 | { | |
730 | return 0; | |
731 | } | |
732 | if (g_b_init_get_length_sid == 0) | |
733 | { | |
734 | g_b_init_get_length_sid = 1; | |
735 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
736 | s_pfn_Get_Length_Sid = | |
737 | (GetLengthSid_Proc) GetProcAddress ( | |
738 | hm_advapi32, "GetLengthSid"); | |
739 | } | |
740 | if (s_pfn_Get_Length_Sid == NULL) | |
741 | { | |
742 | return 0; | |
743 | } | |
744 | return (s_pfn_Get_Length_Sid (sid)); | |
745 | } | |
746 | ||
bedf4aab JB |
747 | static BOOL WINAPI |
748 | copy_sid (DWORD destlen, PSID dest, PSID src) | |
f8b35b24 EZ |
749 | { |
750 | static CopySid_Proc s_pfn_Copy_Sid = NULL; | |
751 | HMODULE hm_advapi32 = NULL; | |
752 | if (is_windows_9x () == TRUE) | |
753 | { | |
754 | return FALSE; | |
755 | } | |
756 | if (g_b_init_copy_sid == 0) | |
757 | { | |
758 | g_b_init_copy_sid = 1; | |
759 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
760 | s_pfn_Copy_Sid = | |
761 | (CopySid_Proc) GetProcAddress ( | |
762 | hm_advapi32, "CopySid"); | |
763 | } | |
764 | if (s_pfn_Copy_Sid == NULL) | |
765 | { | |
766 | return FALSE; | |
767 | } | |
768 | return (s_pfn_Copy_Sid (destlen, dest, src)); | |
769 | } | |
770 | ||
f60ae425 BK |
771 | /* |
772 | END: Wrapper functions around OpenProcessToken | |
773 | and other functions in advapi32.dll that are only | |
774 | supported in Windows NT / 2k / XP | |
775 | */ | |
776 | ||
bedf4aab JB |
777 | static void WINAPI |
778 | get_native_system_info (LPSYSTEM_INFO lpSystemInfo) | |
ad9e2d54 EZ |
779 | { |
780 | static GetNativeSystemInfo_Proc s_pfn_Get_Native_System_Info = NULL; | |
781 | if (is_windows_9x () != TRUE) | |
782 | { | |
783 | if (g_b_init_get_native_system_info == 0) | |
784 | { | |
785 | g_b_init_get_native_system_info = 1; | |
786 | s_pfn_Get_Native_System_Info = | |
787 | (GetNativeSystemInfo_Proc)GetProcAddress (GetModuleHandle ("kernel32.dll"), | |
788 | "GetNativeSystemInfo"); | |
789 | } | |
790 | if (s_pfn_Get_Native_System_Info != NULL) | |
791 | s_pfn_Get_Native_System_Info (lpSystemInfo); | |
792 | } | |
793 | else | |
794 | lpSystemInfo->dwNumberOfProcessors = -1; | |
795 | } | |
796 | ||
bedf4aab JB |
797 | static BOOL WINAPI |
798 | get_system_times (LPFILETIME lpIdleTime, | |
799 | LPFILETIME lpKernelTime, | |
800 | LPFILETIME lpUserTime) | |
ad9e2d54 EZ |
801 | { |
802 | static GetSystemTimes_Proc s_pfn_Get_System_times = NULL; | |
803 | if (is_windows_9x () == TRUE) | |
804 | { | |
805 | return FALSE; | |
806 | } | |
807 | if (g_b_init_get_system_times == 0) | |
808 | { | |
809 | g_b_init_get_system_times = 1; | |
810 | s_pfn_Get_System_times = | |
811 | (GetSystemTimes_Proc)GetProcAddress (GetModuleHandle ("kernel32.dll"), | |
812 | "GetSystemTimes"); | |
813 | } | |
814 | if (s_pfn_Get_System_times == NULL) | |
815 | return FALSE; | |
816 | return (s_pfn_Get_System_times (lpIdleTime, lpKernelTime, lpUserTime)); | |
817 | } | |
6dad7178 EZ |
818 | |
819 | static BOOLEAN WINAPI | |
820 | create_symbolic_link (LPTSTR lpSymlinkFilename, | |
821 | LPTSTR lpTargetFileName, | |
822 | DWORD dwFlags) | |
823 | { | |
824 | static CreateSymbolicLink_Proc s_pfn_Create_Symbolic_Link = NULL; | |
825 | BOOLEAN retval; | |
826 | ||
827 | if (is_windows_9x () == TRUE) | |
828 | { | |
829 | errno = ENOSYS; | |
830 | return 0; | |
831 | } | |
832 | if (g_b_init_create_symbolic_link == 0) | |
833 | { | |
834 | g_b_init_create_symbolic_link = 1; | |
835 | #ifdef _UNICODE | |
836 | s_pfn_Create_Symbolic_Link = | |
837 | (CreateSymbolicLink_Proc)GetProcAddress (GetModuleHandle ("kernel32.dll"), | |
838 | "CreateSymbolicLinkW"); | |
839 | #else | |
840 | s_pfn_Create_Symbolic_Link = | |
841 | (CreateSymbolicLink_Proc)GetProcAddress (GetModuleHandle ("kernel32.dll"), | |
842 | "CreateSymbolicLinkA"); | |
843 | #endif | |
844 | } | |
845 | if (s_pfn_Create_Symbolic_Link == NULL) | |
846 | { | |
847 | errno = ENOSYS; | |
848 | return 0; | |
849 | } | |
850 | ||
851 | retval = s_pfn_Create_Symbolic_Link (lpSymlinkFilename, lpTargetFileName, | |
852 | dwFlags); | |
853 | /* If we were denied creation of the symlink, try again after | |
854 | enabling the SeCreateSymbolicLinkPrivilege for our process. */ | |
855 | if (!retval) | |
856 | { | |
857 | TOKEN_PRIVILEGES priv_current; | |
858 | ||
859 | if (enable_privilege (SE_CREATE_SYMBOLIC_LINK_NAME, TRUE, &priv_current)) | |
860 | { | |
861 | retval = s_pfn_Create_Symbolic_Link (lpSymlinkFilename, lpTargetFileName, | |
862 | dwFlags); | |
863 | restore_privilege (&priv_current); | |
864 | revert_to_self (); | |
865 | } | |
866 | } | |
867 | return retval; | |
868 | } | |
f60ae425 | 869 | \f |
18e070ac | 870 | |
ed91b2ad EZ |
871 | /* Return 1 if P is a valid pointer to an object of size SIZE. Return |
872 | 0 if P is NOT a valid pointer. Return -1 if we cannot validate P. | |
873 | ||
874 | This is called from alloc.c:valid_pointer_p. */ | |
875 | int | |
876 | w32_valid_pointer_p (void *p, int size) | |
877 | { | |
878 | SIZE_T done; | |
879 | HANDLE h = OpenProcess (PROCESS_VM_READ, FALSE, GetCurrentProcessId ()); | |
880 | ||
881 | if (h) | |
882 | { | |
883 | unsigned char *buf = alloca (size); | |
884 | int retval = ReadProcessMemory (h, p, buf, size, &done); | |
885 | ||
886 | CloseHandle (h); | |
887 | return retval; | |
888 | } | |
889 | else | |
890 | return -1; | |
891 | } | |
892 | ||
76b3903d | 893 | static char startup_dir[MAXPATHLEN]; |
00b3b7b3 | 894 | |
95ed0025 | 895 | /* Get the current working directory. */ |
480b0c5b | 896 | char * |
95ed0025 RS |
897 | getwd (char *dir) |
898 | { | |
76b3903d | 899 | #if 0 |
480b0c5b GV |
900 | if (GetCurrentDirectory (MAXPATHLEN, dir) > 0) |
901 | return dir; | |
902 | return NULL; | |
76b3903d | 903 | #else |
8d38f461 EZ |
904 | /* Emacs doesn't actually change directory itself, it stays in the |
905 | same directory where it was started. */ | |
76b3903d GV |
906 | strcpy (dir, startup_dir); |
907 | return dir; | |
908 | #endif | |
95ed0025 RS |
909 | } |
910 | ||
95ed0025 | 911 | /* Emulate getloadavg. */ |
ad9e2d54 EZ |
912 | |
913 | struct load_sample { | |
914 | time_t sample_time; | |
915 | ULONGLONG idle; | |
916 | ULONGLONG kernel; | |
917 | ULONGLONG user; | |
918 | }; | |
919 | ||
920 | /* Number of processors on this machine. */ | |
921 | static unsigned num_of_processors; | |
922 | ||
923 | /* We maintain 1-sec samples for the last 16 minutes in a circular buffer. */ | |
924 | static struct load_sample samples[16*60]; | |
925 | static int first_idx = -1, last_idx = -1; | |
926 | static int max_idx = sizeof (samples) / sizeof (samples[0]); | |
927 | ||
928 | static int | |
929 | buf_next (int from) | |
930 | { | |
931 | int next_idx = from + 1; | |
932 | ||
933 | if (next_idx >= max_idx) | |
934 | next_idx = 0; | |
935 | ||
936 | return next_idx; | |
937 | } | |
938 | ||
939 | static int | |
940 | buf_prev (int from) | |
941 | { | |
942 | int prev_idx = from - 1; | |
943 | ||
944 | if (prev_idx < 0) | |
945 | prev_idx = max_idx - 1; | |
946 | ||
947 | return prev_idx; | |
948 | } | |
949 | ||
950 | static void | |
951 | sample_system_load (ULONGLONG *idle, ULONGLONG *kernel, ULONGLONG *user) | |
952 | { | |
953 | SYSTEM_INFO sysinfo; | |
954 | FILETIME ft_idle, ft_user, ft_kernel; | |
955 | ||
956 | /* Initialize the number of processors on this machine. */ | |
957 | if (num_of_processors <= 0) | |
958 | { | |
959 | get_native_system_info (&sysinfo); | |
960 | num_of_processors = sysinfo.dwNumberOfProcessors; | |
961 | if (num_of_processors <= 0) | |
962 | { | |
963 | GetSystemInfo (&sysinfo); | |
964 | num_of_processors = sysinfo.dwNumberOfProcessors; | |
965 | } | |
966 | if (num_of_processors <= 0) | |
967 | num_of_processors = 1; | |
968 | } | |
969 | ||
970 | /* TODO: Take into account threads that are ready to run, by | |
971 | sampling the "\System\Processor Queue Length" performance | |
972 | counter. The code below accounts only for threads that are | |
973 | actually running. */ | |
974 | ||
975 | if (get_system_times (&ft_idle, &ft_kernel, &ft_user)) | |
976 | { | |
977 | ULARGE_INTEGER uidle, ukernel, uuser; | |
978 | ||
979 | memcpy (&uidle, &ft_idle, sizeof (ft_idle)); | |
980 | memcpy (&ukernel, &ft_kernel, sizeof (ft_kernel)); | |
981 | memcpy (&uuser, &ft_user, sizeof (ft_user)); | |
982 | *idle = uidle.QuadPart; | |
983 | *kernel = ukernel.QuadPart; | |
984 | *user = uuser.QuadPart; | |
985 | } | |
986 | else | |
987 | { | |
988 | *idle = 0; | |
989 | *kernel = 0; | |
990 | *user = 0; | |
991 | } | |
992 | } | |
993 | ||
994 | /* Produce the load average for a given time interval, using the | |
995 | samples in the samples[] array. WHICH can be 0, 1, or 2, meaning | |
996 | 1-minute, 5-minute, or 15-minute average, respectively. */ | |
997 | static double | |
998 | getavg (int which) | |
999 | { | |
1000 | double retval = -1.0; | |
1001 | double tdiff; | |
1002 | int idx; | |
1003 | double span = (which == 0 ? 1.0 : (which == 1 ? 5.0 : 15.0)) * 60; | |
1004 | time_t now = samples[last_idx].sample_time; | |
1005 | ||
1006 | if (first_idx != last_idx) | |
1007 | { | |
1008 | for (idx = buf_prev (last_idx); ; idx = buf_prev (idx)) | |
1009 | { | |
1010 | tdiff = difftime (now, samples[idx].sample_time); | |
1011 | if (tdiff >= span - 2*DBL_EPSILON*now) | |
1012 | { | |
1013 | long double sys = | |
1014 | samples[last_idx].kernel + samples[last_idx].user | |
1015 | - (samples[idx].kernel + samples[idx].user); | |
1016 | long double idl = samples[last_idx].idle - samples[idx].idle; | |
1017 | ||
1018 | retval = (1.0 - idl / sys) * num_of_processors; | |
1019 | break; | |
1020 | } | |
1021 | if (idx == first_idx) | |
1022 | break; | |
1023 | } | |
1024 | } | |
1025 | ||
1026 | return retval; | |
1027 | } | |
1028 | ||
95ed0025 RS |
1029 | int |
1030 | getloadavg (double loadavg[], int nelem) | |
1031 | { | |
ad9e2d54 EZ |
1032 | int elem; |
1033 | ULONGLONG idle, kernel, user; | |
1034 | time_t now = time (NULL); | |
1035 | ||
1036 | /* Store another sample. We ignore samples that are less than 1 sec | |
1037 | apart. */ | |
1038 | if (difftime (now, samples[last_idx].sample_time) >= 1.0 - 2*DBL_EPSILON*now) | |
1039 | { | |
1040 | sample_system_load (&idle, &kernel, &user); | |
1041 | last_idx = buf_next (last_idx); | |
1042 | samples[last_idx].sample_time = now; | |
1043 | samples[last_idx].idle = idle; | |
1044 | samples[last_idx].kernel = kernel; | |
1045 | samples[last_idx].user = user; | |
1046 | /* If the buffer has more that 15 min worth of samples, discard | |
1047 | the old ones. */ | |
1048 | if (first_idx == -1) | |
1049 | first_idx = last_idx; | |
1050 | while (first_idx != last_idx | |
1051 | && (difftime (now, samples[first_idx].sample_time) | |
1052 | >= 15.0*60 + 2*DBL_EPSILON*now)) | |
1053 | first_idx = buf_next (first_idx); | |
1054 | } | |
95ed0025 | 1055 | |
ad9e2d54 | 1056 | for (elem = 0; elem < nelem; elem++) |
95ed0025 | 1057 | { |
ad9e2d54 EZ |
1058 | double avg = getavg (elem); |
1059 | ||
1060 | if (avg < 0) | |
1061 | break; | |
1062 | loadavg[elem] = avg; | |
95ed0025 | 1063 | } |
ad9e2d54 EZ |
1064 | |
1065 | return elem; | |
95ed0025 RS |
1066 | } |
1067 | ||
480b0c5b | 1068 | /* Emulate getpwuid, getpwnam and others. */ |
95ed0025 | 1069 | |
051fe60d GV |
1070 | #define PASSWD_FIELD_SIZE 256 |
1071 | ||
07f7980a EZ |
1072 | static char dflt_passwd_name[PASSWD_FIELD_SIZE]; |
1073 | static char dflt_passwd_passwd[PASSWD_FIELD_SIZE]; | |
1074 | static char dflt_passwd_gecos[PASSWD_FIELD_SIZE]; | |
1075 | static char dflt_passwd_dir[PASSWD_FIELD_SIZE]; | |
1076 | static char dflt_passwd_shell[PASSWD_FIELD_SIZE]; | |
95ed0025 | 1077 | |
07f7980a | 1078 | static struct passwd dflt_passwd = |
95ed0025 | 1079 | { |
07f7980a EZ |
1080 | dflt_passwd_name, |
1081 | dflt_passwd_passwd, | |
95ed0025 RS |
1082 | 0, |
1083 | 0, | |
1084 | 0, | |
07f7980a EZ |
1085 | dflt_passwd_gecos, |
1086 | dflt_passwd_dir, | |
1087 | dflt_passwd_shell, | |
95ed0025 RS |
1088 | }; |
1089 | ||
07f7980a EZ |
1090 | static char dflt_group_name[GNLEN+1]; |
1091 | ||
1092 | static struct group dflt_group = | |
3d19b645 | 1093 | { |
07f7980a EZ |
1094 | /* When group information is not available, we return this as the |
1095 | group for all files. */ | |
1096 | dflt_group_name, | |
1097 | 0, | |
3d19b645 LH |
1098 | }; |
1099 | ||
22749e9a | 1100 | unsigned |
b56ceb92 | 1101 | getuid (void) |
177c0ea7 | 1102 | { |
07f7980a | 1103 | return dflt_passwd.pw_uid; |
480b0c5b GV |
1104 | } |
1105 | ||
22749e9a | 1106 | unsigned |
b56ceb92 | 1107 | geteuid (void) |
177c0ea7 | 1108 | { |
480b0c5b GV |
1109 | /* I could imagine arguing for checking to see whether the user is |
1110 | in the Administrators group and returning a UID of 0 for that | |
1111 | case, but I don't know how wise that would be in the long run. */ | |
177c0ea7 | 1112 | return getuid (); |
480b0c5b GV |
1113 | } |
1114 | ||
22749e9a | 1115 | unsigned |
b56ceb92 | 1116 | getgid (void) |
177c0ea7 | 1117 | { |
07f7980a | 1118 | return dflt_passwd.pw_gid; |
480b0c5b GV |
1119 | } |
1120 | ||
22749e9a | 1121 | unsigned |
b56ceb92 | 1122 | getegid (void) |
177c0ea7 | 1123 | { |
480b0c5b GV |
1124 | return getgid (); |
1125 | } | |
1126 | ||
95ed0025 | 1127 | struct passwd * |
22749e9a | 1128 | getpwuid (unsigned uid) |
95ed0025 | 1129 | { |
07f7980a EZ |
1130 | if (uid == dflt_passwd.pw_uid) |
1131 | return &dflt_passwd; | |
480b0c5b | 1132 | return NULL; |
95ed0025 RS |
1133 | } |
1134 | ||
3d19b645 LH |
1135 | struct group * |
1136 | getgrgid (gid_t gid) | |
1137 | { | |
07f7980a | 1138 | return &dflt_group; |
3d19b645 LH |
1139 | } |
1140 | ||
95ed0025 RS |
1141 | struct passwd * |
1142 | getpwnam (char *name) | |
1143 | { | |
1144 | struct passwd *pw; | |
177c0ea7 | 1145 | |
95ed0025 RS |
1146 | pw = getpwuid (getuid ()); |
1147 | if (!pw) | |
1148 | return pw; | |
1149 | ||
05131107 | 1150 | if (xstrcasecmp (name, pw->pw_name)) |
95ed0025 RS |
1151 | return NULL; |
1152 | ||
1153 | return pw; | |
1154 | } | |
1155 | ||
bedf4aab | 1156 | static void |
b56ceb92 | 1157 | init_user_info (void) |
95ed0025 | 1158 | { |
480b0c5b GV |
1159 | /* Find the user's real name by opening the process token and |
1160 | looking up the name associated with the user-sid in that token. | |
1161 | ||
1162 | Use the relative portion of the identifier authority value from | |
1163 | the user-sid as the user id value (same for group id using the | |
1164 | primary group sid from the process token). */ | |
1165 | ||
07f7980a | 1166 | char uname[UNLEN+1], gname[GNLEN+1], domain[1025]; |
32cef06e | 1167 | DWORD ulength = sizeof (uname), dlength = sizeof (domain), needed; |
07f7980a | 1168 | DWORD glength = sizeof (gname); |
10aabbf9 JB |
1169 | HANDLE token = NULL; |
1170 | SID_NAME_USE user_type; | |
32cef06e EZ |
1171 | unsigned char *buf = NULL; |
1172 | DWORD blen = 0; | |
634d3003 EZ |
1173 | TOKEN_USER user_token; |
1174 | TOKEN_PRIMARY_GROUP group_token; | |
32cef06e | 1175 | BOOL result; |
10aabbf9 | 1176 | |
32cef06e EZ |
1177 | result = open_process_token (GetCurrentProcess (), TOKEN_QUERY, &token); |
1178 | if (result) | |
1179 | { | |
1180 | result = get_token_information (token, TokenUser, NULL, 0, &blen); | |
1181 | if (!result && GetLastError () == ERROR_INSUFFICIENT_BUFFER) | |
1182 | { | |
1183 | buf = xmalloc (blen); | |
1184 | result = get_token_information (token, TokenUser, | |
1185 | (LPVOID)buf, blen, &needed); | |
1186 | if (result) | |
1187 | { | |
1188 | memcpy (&user_token, buf, sizeof (user_token)); | |
1189 | result = lookup_account_sid (NULL, user_token.User.Sid, | |
1190 | uname, &ulength, | |
1191 | domain, &dlength, &user_type); | |
1192 | } | |
1193 | } | |
1194 | else | |
1195 | result = FALSE; | |
1196 | } | |
1197 | if (result) | |
d1c1c3d2 | 1198 | { |
07f7980a | 1199 | strcpy (dflt_passwd.pw_name, uname); |
c617afce | 1200 | /* Determine a reasonable uid value. */ |
05131107 | 1201 | if (xstrcasecmp ("administrator", uname) == 0) |
480b0c5b | 1202 | { |
07f7980a EZ |
1203 | dflt_passwd.pw_uid = 500; /* well-known Administrator uid */ |
1204 | dflt_passwd.pw_gid = 513; /* well-known None gid */ | |
480b0c5b GV |
1205 | } |
1206 | else | |
1207 | { | |
ce0ee994 EZ |
1208 | /* Use the last sub-authority value of the RID, the relative |
1209 | portion of the SID, as user/group ID. */ | |
8aaaec6b | 1210 | dflt_passwd.pw_uid = get_rid (user_token.User.Sid); |
480b0c5b | 1211 | |
8aaaec6b | 1212 | /* Get group id and name. */ |
32cef06e EZ |
1213 | result = get_token_information (token, TokenPrimaryGroup, |
1214 | (LPVOID)buf, blen, &needed); | |
1215 | if (!result && GetLastError () == ERROR_INSUFFICIENT_BUFFER) | |
1216 | { | |
1217 | buf = xrealloc (buf, blen = needed); | |
1218 | result = get_token_information (token, TokenPrimaryGroup, | |
1219 | (LPVOID)buf, blen, &needed); | |
1220 | } | |
1221 | if (result) | |
480b0c5b | 1222 | { |
634d3003 | 1223 | memcpy (&group_token, buf, sizeof (group_token)); |
8aaaec6b | 1224 | dflt_passwd.pw_gid = get_rid (group_token.PrimaryGroup); |
07f7980a | 1225 | dlength = sizeof (domain); |
32cef06e EZ |
1226 | /* If we can get at the real Primary Group name, use that. |
1227 | Otherwise, the default group name was already set to | |
1228 | "None" in globals_of_w32. */ | |
07f7980a EZ |
1229 | if (lookup_account_sid (NULL, group_token.PrimaryGroup, |
1230 | gname, &glength, NULL, &dlength, | |
1231 | &user_type)) | |
1232 | strcpy (dflt_group_name, gname); | |
480b0c5b GV |
1233 | } |
1234 | else | |
07f7980a | 1235 | dflt_passwd.pw_gid = dflt_passwd.pw_uid; |
480b0c5b GV |
1236 | } |
1237 | } | |
1238 | /* If security calls are not supported (presumably because we | |
32cef06e | 1239 | are running under Windows 9X), fallback to this: */ |
07f7980a | 1240 | else if (GetUserName (uname, &ulength)) |
480b0c5b | 1241 | { |
07f7980a | 1242 | strcpy (dflt_passwd.pw_name, uname); |
05131107 | 1243 | if (xstrcasecmp ("administrator", uname) == 0) |
07f7980a | 1244 | dflt_passwd.pw_uid = 0; |
480b0c5b | 1245 | else |
07f7980a EZ |
1246 | dflt_passwd.pw_uid = 123; |
1247 | dflt_passwd.pw_gid = dflt_passwd.pw_uid; | |
480b0c5b GV |
1248 | } |
1249 | else | |
1250 | { | |
07f7980a EZ |
1251 | strcpy (dflt_passwd.pw_name, "unknown"); |
1252 | dflt_passwd.pw_uid = 123; | |
1253 | dflt_passwd.pw_gid = 123; | |
d1c1c3d2 | 1254 | } |
07f7980a | 1255 | dflt_group.gr_gid = dflt_passwd.pw_gid; |
95ed0025 | 1256 | |
480b0c5b GV |
1257 | /* Ensure HOME and SHELL are defined. */ |
1258 | if (getenv ("HOME") == NULL) | |
1088b922 | 1259 | emacs_abort (); |
480b0c5b | 1260 | if (getenv ("SHELL") == NULL) |
1088b922 | 1261 | emacs_abort (); |
95ed0025 | 1262 | |
480b0c5b | 1263 | /* Set dir and shell from environment variables. */ |
07f7980a EZ |
1264 | strcpy (dflt_passwd.pw_dir, getenv ("HOME")); |
1265 | strcpy (dflt_passwd.pw_shell, getenv ("SHELL")); | |
bd4a449f | 1266 | |
32cef06e | 1267 | xfree (buf); |
480b0c5b GV |
1268 | if (token) |
1269 | CloseHandle (token); | |
95ed0025 RS |
1270 | } |
1271 | ||
95ed0025 | 1272 | int |
b56ceb92 | 1273 | random (void) |
95ed0025 | 1274 | { |
480b0c5b GV |
1275 | /* rand () on NT gives us 15 random bits...hack together 30 bits. */ |
1276 | return ((rand () << 15) | rand ()); | |
95ed0025 RS |
1277 | } |
1278 | ||
95ed0025 | 1279 | void |
480b0c5b | 1280 | srandom (int seed) |
95ed0025 | 1281 | { |
480b0c5b | 1282 | srand (seed); |
95ed0025 RS |
1283 | } |
1284 | ||
76b3903d | 1285 | |
cbe39279 RS |
1286 | /* Normalize filename by converting all path separators to |
1287 | the specified separator. Also conditionally convert upper | |
1288 | case path name components to lower case. */ | |
1289 | ||
1290 | static void | |
b56ceb92 | 1291 | normalize_filename (register char *fp, char path_sep) |
cbe39279 RS |
1292 | { |
1293 | char sep; | |
1294 | char *elem; | |
1295 | ||
5162ffce MB |
1296 | /* Always lower-case drive letters a-z, even if the filesystem |
1297 | preserves case in filenames. | |
1298 | This is so filenames can be compared by string comparison | |
1299 | functions that are case-sensitive. Even case-preserving filesystems | |
1300 | do not distinguish case in drive letters. */ | |
1301 | if (fp[1] == ':' && *fp >= 'A' && *fp <= 'Z') | |
1302 | { | |
1303 | *fp += 'a' - 'A'; | |
1304 | fp += 2; | |
1305 | } | |
1306 | ||
fbd6baed | 1307 | if (NILP (Vw32_downcase_file_names)) |
cbe39279 RS |
1308 | { |
1309 | while (*fp) | |
1310 | { | |
1311 | if (*fp == '/' || *fp == '\\') | |
1312 | *fp = path_sep; | |
1313 | fp++; | |
1314 | } | |
1315 | return; | |
1316 | } | |
1317 | ||
1318 | sep = path_sep; /* convert to this path separator */ | |
1319 | elem = fp; /* start of current path element */ | |
1320 | ||
1321 | do { | |
1322 | if (*fp >= 'a' && *fp <= 'z') | |
1323 | elem = 0; /* don't convert this element */ | |
1324 | ||
1325 | if (*fp == 0 || *fp == ':') | |
1326 | { | |
1327 | sep = *fp; /* restore current separator (or 0) */ | |
1328 | *fp = '/'; /* after conversion of this element */ | |
1329 | } | |
1330 | ||
1331 | if (*fp == '/' || *fp == '\\') | |
1332 | { | |
1333 | if (elem && elem != fp) | |
1334 | { | |
1335 | *fp = 0; /* temporary end of string */ | |
1336 | _strlwr (elem); /* while we convert to lower case */ | |
1337 | } | |
1338 | *fp = sep; /* convert (or restore) path separator */ | |
1339 | elem = fp + 1; /* next element starts after separator */ | |
1340 | sep = path_sep; | |
1341 | } | |
1342 | } while (*fp++); | |
1343 | } | |
1344 | ||
480b0c5b | 1345 | /* Destructively turn backslashes into slashes. */ |
95ed0025 | 1346 | void |
b56ceb92 | 1347 | dostounix_filename (register char *p) |
95ed0025 | 1348 | { |
cbe39279 | 1349 | normalize_filename (p, '/'); |
95ed0025 RS |
1350 | } |
1351 | ||
480b0c5b | 1352 | /* Destructively turn slashes into backslashes. */ |
95ed0025 | 1353 | void |
b56ceb92 | 1354 | unixtodos_filename (register char *p) |
95ed0025 | 1355 | { |
cbe39279 | 1356 | normalize_filename (p, '\\'); |
95ed0025 RS |
1357 | } |
1358 | ||
480b0c5b GV |
1359 | /* Remove all CR's that are followed by a LF. |
1360 | (From msdos.c...probably should figure out a way to share it, | |
1361 | although this code isn't going to ever change.) */ | |
bedf4aab | 1362 | static int |
b56ceb92 | 1363 | crlf_to_lf (register int n, register unsigned char *buf) |
35f0d482 | 1364 | { |
480b0c5b GV |
1365 | unsigned char *np = buf; |
1366 | unsigned char *startp = buf; | |
1367 | unsigned char *endp = buf + n; | |
35f0d482 | 1368 | |
480b0c5b GV |
1369 | if (n == 0) |
1370 | return n; | |
1371 | while (buf < endp - 1) | |
95ed0025 | 1372 | { |
480b0c5b GV |
1373 | if (*buf == 0x0d) |
1374 | { | |
1375 | if (*(++buf) != 0x0a) | |
1376 | *np++ = 0x0d; | |
1377 | } | |
1378 | else | |
1379 | *np++ = *buf++; | |
95ed0025 | 1380 | } |
480b0c5b GV |
1381 | if (buf < endp) |
1382 | *np++ = *buf++; | |
1383 | return np - startp; | |
95ed0025 RS |
1384 | } |
1385 | ||
76b3903d GV |
1386 | /* Parse the root part of file name, if present. Return length and |
1387 | optionally store pointer to char after root. */ | |
1388 | static int | |
1389 | parse_root (char * name, char ** pPath) | |
1390 | { | |
1391 | char * start = name; | |
1392 | ||
1393 | if (name == NULL) | |
1394 | return 0; | |
1395 | ||
1396 | /* find the root name of the volume if given */ | |
1397 | if (isalpha (name[0]) && name[1] == ':') | |
1398 | { | |
1399 | /* skip past drive specifier */ | |
1400 | name += 2; | |
1401 | if (IS_DIRECTORY_SEP (name[0])) | |
1402 | name++; | |
1403 | } | |
1404 | else if (IS_DIRECTORY_SEP (name[0]) && IS_DIRECTORY_SEP (name[1])) | |
1405 | { | |
1406 | int slashes = 2; | |
1407 | name += 2; | |
1408 | do | |
1409 | { | |
1410 | if (IS_DIRECTORY_SEP (*name) && --slashes == 0) | |
1411 | break; | |
1412 | name++; | |
1413 | } | |
1414 | while ( *name ); | |
1415 | if (IS_DIRECTORY_SEP (name[0])) | |
1416 | name++; | |
1417 | } | |
1418 | ||
1419 | if (pPath) | |
1420 | *pPath = name; | |
1421 | ||
1422 | return name - start; | |
1423 | } | |
1424 | ||
1425 | /* Get long base name for name; name is assumed to be absolute. */ | |
1426 | static int | |
1427 | get_long_basename (char * name, char * buf, int size) | |
1428 | { | |
1429 | WIN32_FIND_DATA find_data; | |
1430 | HANDLE dir_handle; | |
1431 | int len = 0; | |
1432 | ||
9ab8560d | 1433 | /* must be valid filename, no wild cards or other invalid characters */ |
22189f79 | 1434 | if (_mbspbrk (name, "*?|<>\"")) |
bb1584c8 RS |
1435 | return 0; |
1436 | ||
76b3903d GV |
1437 | dir_handle = FindFirstFile (name, &find_data); |
1438 | if (dir_handle != INVALID_HANDLE_VALUE) | |
1439 | { | |
1440 | if ((len = strlen (find_data.cFileName)) < size) | |
1441 | memcpy (buf, find_data.cFileName, len + 1); | |
1442 | else | |
1443 | len = 0; | |
1444 | FindClose (dir_handle); | |
1445 | } | |
1446 | return len; | |
1447 | } | |
1448 | ||
1449 | /* Get long name for file, if possible (assumed to be absolute). */ | |
1450 | BOOL | |
1451 | w32_get_long_filename (char * name, char * buf, int size) | |
1452 | { | |
1453 | char * o = buf; | |
1454 | char * p; | |
1455 | char * q; | |
1456 | char full[ MAX_PATH ]; | |
1457 | int len; | |
1458 | ||
1459 | len = strlen (name); | |
1460 | if (len >= MAX_PATH) | |
1461 | return FALSE; | |
1462 | ||
1463 | /* Use local copy for destructive modification. */ | |
1464 | memcpy (full, name, len+1); | |
1465 | unixtodos_filename (full); | |
1466 | ||
1467 | /* Copy root part verbatim. */ | |
1468 | len = parse_root (full, &p); | |
1469 | memcpy (o, full, len); | |
1470 | o += len; | |
4f8ac0b2 | 1471 | *o = '\0'; |
76b3903d GV |
1472 | size -= len; |
1473 | ||
4f8ac0b2 | 1474 | while (p != NULL && *p) |
76b3903d GV |
1475 | { |
1476 | q = p; | |
1477 | p = strchr (q, '\\'); | |
1478 | if (p) *p = '\0'; | |
1479 | len = get_long_basename (full, o, size); | |
1480 | if (len > 0) | |
1481 | { | |
1482 | o += len; | |
1483 | size -= len; | |
1484 | if (p != NULL) | |
1485 | { | |
1486 | *p++ = '\\'; | |
1487 | if (size < 2) | |
1488 | return FALSE; | |
1489 | *o++ = '\\'; | |
1490 | size--; | |
1491 | *o = '\0'; | |
1492 | } | |
1493 | } | |
1494 | else | |
1495 | return FALSE; | |
1496 | } | |
76b3903d GV |
1497 | |
1498 | return TRUE; | |
1499 | } | |
1500 | ||
bedf4aab | 1501 | static int |
9d3355d1 GV |
1502 | is_unc_volume (const char *filename) |
1503 | { | |
1504 | const char *ptr = filename; | |
1505 | ||
1506 | if (!IS_DIRECTORY_SEP (ptr[0]) || !IS_DIRECTORY_SEP (ptr[1]) || !ptr[2]) | |
1507 | return 0; | |
1508 | ||
22189f79 | 1509 | if (_mbspbrk (ptr + 2, "*?|<>\"\\/")) |
9d3355d1 GV |
1510 | return 0; |
1511 | ||
1512 | return 1; | |
1513 | } | |
76b3903d | 1514 | |
480b0c5b | 1515 | #define REG_ROOT "SOFTWARE\\GNU\\Emacs" |
f332b293 | 1516 | |
177c0ea7 | 1517 | LPBYTE |
b56ceb92 | 1518 | w32_get_resource (char *key, LPDWORD lpdwtype) |
f332b293 GV |
1519 | { |
1520 | LPBYTE lpvalue; | |
1521 | HKEY hrootkey = NULL; | |
1522 | DWORD cbData; | |
177c0ea7 JB |
1523 | |
1524 | /* Check both the current user and the local machine to see if | |
f332b293 | 1525 | we have any resources. */ |
177c0ea7 | 1526 | |
f332b293 GV |
1527 | if (RegOpenKeyEx (HKEY_CURRENT_USER, REG_ROOT, 0, KEY_READ, &hrootkey) == ERROR_SUCCESS) |
1528 | { | |
1529 | lpvalue = NULL; | |
1530 | ||
177c0ea7 | 1531 | if (RegQueryValueEx (hrootkey, key, NULL, NULL, NULL, &cbData) == ERROR_SUCCESS |
23f86fce | 1532 | && (lpvalue = xmalloc (cbData)) != NULL |
f332b293 GV |
1533 | && RegQueryValueEx (hrootkey, key, NULL, lpdwtype, lpvalue, &cbData) == ERROR_SUCCESS) |
1534 | { | |
4da4d9bb | 1535 | RegCloseKey (hrootkey); |
f332b293 GV |
1536 | return (lpvalue); |
1537 | } | |
1538 | ||
70fdbb46 | 1539 | xfree (lpvalue); |
177c0ea7 | 1540 | |
f332b293 | 1541 | RegCloseKey (hrootkey); |
177c0ea7 JB |
1542 | } |
1543 | ||
f332b293 GV |
1544 | if (RegOpenKeyEx (HKEY_LOCAL_MACHINE, REG_ROOT, 0, KEY_READ, &hrootkey) == ERROR_SUCCESS) |
1545 | { | |
1546 | lpvalue = NULL; | |
177c0ea7 | 1547 | |
76b3903d | 1548 | if (RegQueryValueEx (hrootkey, key, NULL, NULL, NULL, &cbData) == ERROR_SUCCESS |
23f86fce | 1549 | && (lpvalue = xmalloc (cbData)) != NULL |
76b3903d | 1550 | && RegQueryValueEx (hrootkey, key, NULL, lpdwtype, lpvalue, &cbData) == ERROR_SUCCESS) |
f332b293 | 1551 | { |
4da4d9bb | 1552 | RegCloseKey (hrootkey); |
f332b293 GV |
1553 | return (lpvalue); |
1554 | } | |
177c0ea7 | 1555 | |
70fdbb46 | 1556 | xfree (lpvalue); |
177c0ea7 | 1557 | |
f332b293 | 1558 | RegCloseKey (hrootkey); |
177c0ea7 JB |
1559 | } |
1560 | ||
f332b293 GV |
1561 | return (NULL); |
1562 | } | |
1563 | ||
75b08edb | 1564 | char *get_emacs_configuration (void); |
94eab1c8 | 1565 | |
f332b293 | 1566 | void |
aa7b87b0 | 1567 | init_environment (char ** argv) |
f332b293 | 1568 | { |
b3308d2e KH |
1569 | static const char * const tempdirs[] = { |
1570 | "$TMPDIR", "$TEMP", "$TMP", "c:/" | |
1571 | }; | |
2d5324c5 | 1572 | |
b3308d2e | 1573 | int i; |
2d5324c5 | 1574 | |
b3308d2e KH |
1575 | const int imax = sizeof (tempdirs) / sizeof (tempdirs[0]); |
1576 | ||
1577 | /* Make sure they have a usable $TMPDIR. Many Emacs functions use | |
1578 | temporary files and assume "/tmp" if $TMPDIR is unset, which | |
1579 | will break on DOS/Windows. Refuse to work if we cannot find | |
1580 | a directory, not even "c:/", usable for that purpose. */ | |
1581 | for (i = 0; i < imax ; i++) | |
1582 | { | |
1583 | const char *tmp = tempdirs[i]; | |
1584 | ||
1585 | if (*tmp == '$') | |
1586 | tmp = getenv (tmp + 1); | |
1587 | /* Note that `access' can lie to us if the directory resides on a | |
1588 | read-only filesystem, like CD-ROM or a write-protected floppy. | |
1589 | The only way to be really sure is to actually create a file and | |
1590 | see if it succeeds. But I think that's too much to ask. */ | |
6dad7178 EZ |
1591 | |
1592 | /* MSVCRT's _access crashes with D_OK. */ | |
a6fc3b5c | 1593 | if (tmp && sys_access (tmp, D_OK) == 0) |
b3308d2e KH |
1594 | { |
1595 | char * var = alloca (strlen (tmp) + 8); | |
1596 | sprintf (var, "TMPDIR=%s", tmp); | |
aca583b2 | 1597 | _putenv (strdup (var)); |
b3308d2e KH |
1598 | break; |
1599 | } | |
1600 | } | |
1601 | if (i >= imax) | |
1602 | cmd_error_internal | |
1603 | (Fcons (Qerror, | |
1604 | Fcons (build_string ("no usable temporary directories found!!"), | |
1605 | Qnil)), | |
1606 | "While setting TMPDIR: "); | |
1607 | ||
ca149beb AI |
1608 | /* Check for environment variables and use registry settings if they |
1609 | don't exist. Fallback on default values where applicable. */ | |
f332b293 | 1610 | { |
480b0c5b GV |
1611 | int i; |
1612 | LPBYTE lpval; | |
1613 | DWORD dwType; | |
69fb0241 | 1614 | char locale_name[32]; |
2d5324c5 | 1615 | char default_home[MAX_PATH]; |
fdc5744d | 1616 | int appdata = 0; |
f332b293 | 1617 | |
e00b99c8 | 1618 | static const struct env_entry |
ca149beb AI |
1619 | { |
1620 | char * name; | |
1621 | char * def_value; | |
e00b99c8 | 1622 | } dflt_envvars[] = |
ca149beb | 1623 | { |
76151e2c EZ |
1624 | /* If the default value is NULL, we will use the value from the |
1625 | outside environment or the Registry, but will not push the | |
1626 | variable into the Emacs environment if it is defined neither | |
1627 | in the Registry nor in the outside environment. */ | |
ca149beb AI |
1628 | {"HOME", "C:/"}, |
1629 | {"PRELOAD_WINSOCK", NULL}, | |
1630 | {"emacs_dir", "C:/emacs"}, | |
76151e2c | 1631 | {"EMACSLOADPATH", NULL}, |
ca149beb | 1632 | {"SHELL", "%emacs_dir%/bin/cmdproxy.exe"}, |
76151e2c EZ |
1633 | {"EMACSDATA", NULL}, |
1634 | {"EMACSPATH", NULL}, | |
1635 | {"INFOPATH", NULL}, | |
1636 | {"EMACSDOC", NULL}, | |
69fb0241 JR |
1637 | {"TERM", "cmd"}, |
1638 | {"LANG", NULL}, | |
480b0c5b GV |
1639 | }; |
1640 | ||
ed3751c8 | 1641 | #define N_ENV_VARS sizeof (dflt_envvars)/sizeof (dflt_envvars[0]) |
e00b99c8 EZ |
1642 | |
1643 | /* We need to copy dflt_envvars[] and work on the copy because we | |
1644 | don't want the dumped Emacs to inherit the values of | |
1645 | environment variables we saw during dumping (which could be on | |
1646 | a different system). The defaults above must be left intact. */ | |
1647 | struct env_entry env_vars[N_ENV_VARS]; | |
1648 | ||
1649 | for (i = 0; i < N_ENV_VARS; i++) | |
1650 | env_vars[i] = dflt_envvars[i]; | |
1651 | ||
2d5324c5 JR |
1652 | /* For backwards compatibility, check if a .emacs file exists in C:/ |
1653 | If not, then we can try to default to the appdata directory under the | |
1654 | user's profile, which is more likely to be writable. */ | |
bb385a92 | 1655 | if (check_existing ("C:/.emacs")) |
94eab1c8 JB |
1656 | { |
1657 | HRESULT profile_result; | |
1658 | /* Dynamically load ShGetFolderPath, as it won't exist on versions | |
1659 | of Windows 95 and NT4 that have not been updated to include | |
1660 | MSIE 5. */ | |
1661 | ShGetFolderPath_fn get_folder_path; | |
1662 | get_folder_path = (ShGetFolderPath_fn) | |
1663 | GetProcAddress (GetModuleHandle ("shell32.dll"), "SHGetFolderPathA"); | |
1664 | ||
1665 | if (get_folder_path != NULL) | |
1666 | { | |
1667 | profile_result = get_folder_path (NULL, CSIDL_APPDATA, NULL, | |
1668 | 0, default_home); | |
2d5324c5 | 1669 | |
94eab1c8 JB |
1670 | /* If we can't get the appdata dir, revert to old behavior. */ |
1671 | if (profile_result == S_OK) | |
fdc5744d JB |
1672 | { |
1673 | env_vars[0].def_value = default_home; | |
1674 | appdata = 1; | |
1675 | } | |
94eab1c8 JB |
1676 | } |
1677 | } | |
2d5324c5 | 1678 | |
69fb0241 JR |
1679 | /* Get default locale info and use it for LANG. */ |
1680 | if (GetLocaleInfo (LOCALE_USER_DEFAULT, | |
1681 | LOCALE_SABBREVLANGNAME | LOCALE_USE_CP_ACP, | |
1682 | locale_name, sizeof (locale_name))) | |
1683 | { | |
e00b99c8 | 1684 | for (i = 0; i < N_ENV_VARS; i++) |
69fb0241 JR |
1685 | { |
1686 | if (strcmp (env_vars[i].name, "LANG") == 0) | |
1687 | { | |
1688 | env_vars[i].def_value = locale_name; | |
1689 | break; | |
1690 | } | |
1691 | } | |
1692 | } | |
1693 | ||
ca149beb AI |
1694 | #define SET_ENV_BUF_SIZE (4 * MAX_PATH) /* to cover EMACSLOADPATH */ |
1695 | ||
1696 | /* Treat emacs_dir specially: set it unconditionally based on our | |
76151e2c | 1697 | location. */ |
ca149beb AI |
1698 | { |
1699 | char *p; | |
1700 | char modname[MAX_PATH]; | |
1701 | ||
1702 | if (!GetModuleFileName (NULL, modname, MAX_PATH)) | |
1088b922 | 1703 | emacs_abort (); |
ca149beb | 1704 | if ((p = strrchr (modname, '\\')) == NULL) |
1088b922 | 1705 | emacs_abort (); |
ca149beb AI |
1706 | *p = 0; |
1707 | ||
05131107 | 1708 | if ((p = strrchr (modname, '\\')) && xstrcasecmp (p, "\\bin") == 0) |
ca149beb AI |
1709 | { |
1710 | char buf[SET_ENV_BUF_SIZE]; | |
1711 | ||
1712 | *p = 0; | |
1713 | for (p = modname; *p; p++) | |
1714 | if (*p == '\\') *p = '/'; | |
177c0ea7 | 1715 | |
ed3751c8 | 1716 | _snprintf (buf, sizeof (buf)-1, "emacs_dir=%s", modname); |
a302c7ae | 1717 | _putenv (strdup (buf)); |
ca149beb | 1718 | } |
950090be JR |
1719 | /* Handle running emacs from the build directory: src/oo-spd/i386/ */ |
1720 | ||
1721 | /* FIXME: should use substring of get_emacs_configuration (). | |
1722 | But I don't think the Windows build supports alpha, mips etc | |
1723 | anymore, so have taken the easy option for now. */ | |
62aba0d4 FP |
1724 | else if (p && (xstrcasecmp (p, "\\i386") == 0 |
1725 | || xstrcasecmp (p, "\\AMD64") == 0)) | |
950090be JR |
1726 | { |
1727 | *p = 0; | |
1728 | p = strrchr (modname, '\\'); | |
1729 | if (p != NULL) | |
1730 | { | |
1731 | *p = 0; | |
1732 | p = strrchr (modname, '\\'); | |
05131107 | 1733 | if (p && xstrcasecmp (p, "\\src") == 0) |
950090be JR |
1734 | { |
1735 | char buf[SET_ENV_BUF_SIZE]; | |
1736 | ||
1737 | *p = 0; | |
1738 | for (p = modname; *p; p++) | |
1739 | if (*p == '\\') *p = '/'; | |
1740 | ||
ed3751c8 | 1741 | _snprintf (buf, sizeof (buf)-1, "emacs_dir=%s", modname); |
950090be JR |
1742 | _putenv (strdup (buf)); |
1743 | } | |
1744 | } | |
1745 | } | |
ca149beb AI |
1746 | } |
1747 | ||
e00b99c8 | 1748 | for (i = 0; i < N_ENV_VARS; i++) |
f332b293 | 1749 | { |
ca149beb | 1750 | if (!getenv (env_vars[i].name)) |
480b0c5b | 1751 | { |
ca149beb | 1752 | int dont_free = 0; |
480b0c5b | 1753 | |
aa5ee2a3 JB |
1754 | if ((lpval = w32_get_resource (env_vars[i].name, &dwType)) == NULL |
1755 | /* Also ignore empty environment variables. */ | |
1756 | || *lpval == 0) | |
ca149beb | 1757 | { |
70fdbb46 | 1758 | xfree (lpval); |
ca149beb AI |
1759 | lpval = env_vars[i].def_value; |
1760 | dwType = REG_EXPAND_SZ; | |
1761 | dont_free = 1; | |
fdc5744d | 1762 | if (!strcmp (env_vars[i].name, "HOME") && !appdata) |
3438fe21 EZ |
1763 | Vdelayed_warnings_list |
1764 | = Fcons (listn (CONSTYPE_HEAP, 2, | |
073c88c2 | 1765 | intern ("initialization"), |
694b6c97 | 1766 | build_string ("Setting HOME to C:\\ by default is deprecated")), |
073c88c2 | 1767 | Vdelayed_warnings_list); |
480b0c5b | 1768 | } |
ca149beb AI |
1769 | |
1770 | if (lpval) | |
480b0c5b | 1771 | { |
892eb237 | 1772 | char buf1[SET_ENV_BUF_SIZE], buf2[SET_ENV_BUF_SIZE]; |
ca149beb | 1773 | |
892eb237 | 1774 | if (dwType == REG_EXPAND_SZ) |
ed3751c8 | 1775 | ExpandEnvironmentStrings ((LPSTR) lpval, buf1, sizeof (buf1)); |
ca149beb | 1776 | else if (dwType == REG_SZ) |
892eb237 EZ |
1777 | strcpy (buf1, lpval); |
1778 | if (dwType == REG_EXPAND_SZ || dwType == REG_SZ) | |
ca149beb | 1779 | { |
ed3751c8 | 1780 | _snprintf (buf2, sizeof (buf2)-1, "%s=%s", env_vars[i].name, |
892eb237 EZ |
1781 | buf1); |
1782 | _putenv (strdup (buf2)); | |
ca149beb | 1783 | } |
f332b293 | 1784 | |
ca149beb AI |
1785 | if (!dont_free) |
1786 | xfree (lpval); | |
1787 | } | |
480b0c5b GV |
1788 | } |
1789 | } | |
1790 | } | |
1791 | ||
75b08edb GV |
1792 | /* Rebuild system configuration to reflect invoking system. */ |
1793 | Vsystem_configuration = build_string (EMACS_CONFIGURATION); | |
1794 | ||
76b3903d GV |
1795 | /* Another special case: on NT, the PATH variable is actually named |
1796 | "Path" although cmd.exe (perhaps NT itself) arranges for | |
1797 | environment variable lookup and setting to be case insensitive. | |
1798 | However, Emacs assumes a fully case sensitive environment, so we | |
1799 | need to change "Path" to "PATH" to match the expectations of | |
1800 | various elisp packages. We do this by the sneaky method of | |
1801 | modifying the string in the C runtime environ entry. | |
1802 | ||
1803 | The same applies to COMSPEC. */ | |
1804 | { | |
1805 | char ** envp; | |
1806 | ||
1807 | for (envp = environ; *envp; envp++) | |
1808 | if (_strnicmp (*envp, "PATH=", 5) == 0) | |
1809 | memcpy (*envp, "PATH=", 5); | |
1810 | else if (_strnicmp (*envp, "COMSPEC=", 8) == 0) | |
1811 | memcpy (*envp, "COMSPEC=", 8); | |
1812 | } | |
1813 | ||
8d38f461 | 1814 | /* Remember the initial working directory for getwd. */ |
6dad7178 EZ |
1815 | /* FIXME: Do we need to resolve possible symlinks in startup_dir? |
1816 | Does it matter anywhere in Emacs? */ | |
76b3903d | 1817 | if (!GetCurrentDirectory (MAXPATHLEN, startup_dir)) |
1088b922 | 1818 | emacs_abort (); |
76b3903d GV |
1819 | |
1820 | { | |
aa7b87b0 | 1821 | static char modname[MAX_PATH]; |
76b3903d GV |
1822 | |
1823 | if (!GetModuleFileName (NULL, modname, MAX_PATH)) | |
1088b922 | 1824 | emacs_abort (); |
aa7b87b0 | 1825 | argv[0] = modname; |
76b3903d GV |
1826 | } |
1827 | ||
20af4831 JR |
1828 | /* Determine if there is a middle mouse button, to allow parse_button |
1829 | to decide whether right mouse events should be mouse-2 or | |
1830 | mouse-3. */ | |
e0c181dd | 1831 | w32_num_mouse_buttons = GetSystemMetrics (SM_CMOUSEBUTTONS); |
20af4831 | 1832 | |
480b0c5b GV |
1833 | init_user_info (); |
1834 | } | |
1835 | ||
6dad7178 EZ |
1836 | /* Called from expand-file-name when default-directory is not a string. */ |
1837 | ||
bf794306 EZ |
1838 | char * |
1839 | emacs_root_dir (void) | |
1840 | { | |
1841 | static char root_dir[FILENAME_MAX]; | |
1842 | const char *p; | |
1843 | ||
1844 | p = getenv ("emacs_dir"); | |
1845 | if (p == NULL) | |
1088b922 | 1846 | emacs_abort (); |
bf794306 EZ |
1847 | strcpy (root_dir, p); |
1848 | root_dir[parse_root (root_dir, NULL)] = '\0'; | |
1849 | dostounix_filename (root_dir); | |
1850 | return root_dir; | |
1851 | } | |
1852 | ||
480b0c5b GV |
1853 | /* We don't have scripts to automatically determine the system configuration |
1854 | for Emacs before it's compiled, and we don't want to have to make the | |
1855 | user enter it, so we define EMACS_CONFIGURATION to invoke this runtime | |
1856 | routine. */ | |
1857 | ||
480b0c5b GV |
1858 | char * |
1859 | get_emacs_configuration (void) | |
1860 | { | |
1861 | char *arch, *oem, *os; | |
c5247da2 | 1862 | int build_num; |
a302c7ae | 1863 | static char configuration_buffer[32]; |
480b0c5b GV |
1864 | |
1865 | /* Determine the processor type. */ | |
177c0ea7 | 1866 | switch (get_processor_type ()) |
480b0c5b GV |
1867 | { |
1868 | ||
1869 | #ifdef PROCESSOR_INTEL_386 | |
1870 | case PROCESSOR_INTEL_386: | |
1871 | case PROCESSOR_INTEL_486: | |
1872 | case PROCESSOR_INTEL_PENTIUM: | |
62aba0d4 FP |
1873 | #ifdef _WIN64 |
1874 | arch = "amd64"; | |
1875 | #else | |
480b0c5b | 1876 | arch = "i386"; |
62aba0d4 FP |
1877 | #endif |
1878 | break; | |
1879 | #endif | |
1880 | #ifdef PROCESSOR_AMD_X8664 | |
1881 | case PROCESSOR_AMD_X8664: | |
1882 | arch = "amd64"; | |
480b0c5b GV |
1883 | break; |
1884 | #endif | |
1885 | ||
480b0c5b GV |
1886 | #ifdef PROCESSOR_MIPS_R2000 |
1887 | case PROCESSOR_MIPS_R2000: | |
1888 | case PROCESSOR_MIPS_R3000: | |
1889 | case PROCESSOR_MIPS_R4000: | |
1890 | arch = "mips"; | |
1891 | break; | |
1892 | #endif | |
1893 | ||
1894 | #ifdef PROCESSOR_ALPHA_21064 | |
1895 | case PROCESSOR_ALPHA_21064: | |
1896 | arch = "alpha"; | |
1897 | break; | |
1898 | #endif | |
1899 | ||
1900 | default: | |
1901 | arch = "unknown"; | |
1902 | break; | |
f332b293 | 1903 | } |
480b0c5b | 1904 | |
a302c7ae AI |
1905 | /* Use the OEM field to reflect the compiler/library combination. */ |
1906 | #ifdef _MSC_VER | |
1907 | #define COMPILER_NAME "msvc" | |
1908 | #else | |
1909 | #ifdef __GNUC__ | |
1910 | #define COMPILER_NAME "mingw" | |
1911 | #else | |
1912 | #define COMPILER_NAME "unknown" | |
1913 | #endif | |
1914 | #endif | |
1915 | oem = COMPILER_NAME; | |
480b0c5b | 1916 | |
c5247da2 GV |
1917 | switch (osinfo_cache.dwPlatformId) { |
1918 | case VER_PLATFORM_WIN32_NT: | |
1919 | os = "nt"; | |
1920 | build_num = osinfo_cache.dwBuildNumber; | |
1921 | break; | |
1922 | case VER_PLATFORM_WIN32_WINDOWS: | |
1923 | if (osinfo_cache.dwMinorVersion == 0) { | |
1924 | os = "windows95"; | |
1925 | } else { | |
1926 | os = "windows98"; | |
1927 | } | |
1928 | build_num = LOWORD (osinfo_cache.dwBuildNumber); | |
1929 | break; | |
1930 | case VER_PLATFORM_WIN32s: | |
1931 | /* Not supported, should not happen. */ | |
1932 | os = "windows32s"; | |
1933 | build_num = LOWORD (osinfo_cache.dwBuildNumber); | |
1934 | break; | |
1935 | default: | |
1936 | os = "unknown"; | |
1937 | build_num = 0; | |
1938 | break; | |
1939 | } | |
1940 | ||
1941 | if (osinfo_cache.dwPlatformId == VER_PLATFORM_WIN32_NT) { | |
1942 | sprintf (configuration_buffer, "%s-%s-%s%d.%d.%d", arch, oem, os, | |
1943 | get_w32_major_version (), get_w32_minor_version (), build_num); | |
1944 | } else { | |
1945 | sprintf (configuration_buffer, "%s-%s-%s.%d", arch, oem, os, build_num); | |
1946 | } | |
480b0c5b | 1947 | |
480b0c5b | 1948 | return configuration_buffer; |
f332b293 GV |
1949 | } |
1950 | ||
a302c7ae AI |
1951 | char * |
1952 | get_emacs_configuration_options (void) | |
1953 | { | |
38c54d9d JB |
1954 | static char *options_buffer; |
1955 | char cv[32]; /* Enough for COMPILER_VERSION. */ | |
1956 | char *options[] = { | |
1957 | cv, /* To be filled later. */ | |
1958 | #ifdef EMACSDEBUG | |
1959 | " --no-opt", | |
d7f29f8e EZ |
1960 | #endif |
1961 | #ifdef ENABLE_CHECKING | |
1962 | " --enable-checking", | |
38c54d9d JB |
1963 | #endif |
1964 | /* configure.bat already sets USER_CFLAGS and USER_LDFLAGS | |
1965 | with a starting space to save work here. */ | |
1966 | #ifdef USER_CFLAGS | |
1967 | " --cflags", USER_CFLAGS, | |
1968 | #endif | |
1969 | #ifdef USER_LDFLAGS | |
1970 | " --ldflags", USER_LDFLAGS, | |
1971 | #endif | |
1972 | NULL | |
1973 | }; | |
1974 | size_t size = 0; | |
1975 | int i; | |
a302c7ae AI |
1976 | |
1977 | /* Work out the effective configure options for this build. */ | |
1978 | #ifdef _MSC_VER | |
1979 | #define COMPILER_VERSION "--with-msvc (%d.%02d)", _MSC_VER / 100, _MSC_VER % 100 | |
1980 | #else | |
1981 | #ifdef __GNUC__ | |
1982 | #define COMPILER_VERSION "--with-gcc (%d.%d)", __GNUC__, __GNUC_MINOR__ | |
1983 | #else | |
1984 | #define COMPILER_VERSION "" | |
1985 | #endif | |
1986 | #endif | |
1987 | ||
83e245c4 | 1988 | if (_snprintf (cv, sizeof (cv) - 1, COMPILER_VERSION) < 0) |
38c54d9d | 1989 | return "Error: not enough space for compiler version"; |
83e245c4 | 1990 | cv[sizeof (cv) - 1] = '\0'; |
38c54d9d JB |
1991 | |
1992 | for (i = 0; options[i]; i++) | |
1993 | size += strlen (options[i]); | |
1994 | ||
1995 | options_buffer = xmalloc (size + 1); | |
fc33e153 | 1996 | options_buffer[0] = '\0'; |
38c54d9d JB |
1997 | |
1998 | for (i = 0; options[i]; i++) | |
1999 | strcat (options_buffer, options[i]); | |
2000 | ||
a302c7ae AI |
2001 | return options_buffer; |
2002 | } | |
2003 | ||
2004 | ||
35f0d482 KH |
2005 | #include <sys/timeb.h> |
2006 | ||
2007 | /* Emulate gettimeofday (Ulrich Leodolter, 1/11/95). */ | |
177c0ea7 | 2008 | void |
35f0d482 KH |
2009 | gettimeofday (struct timeval *tv, struct timezone *tz) |
2010 | { | |
6e602566 | 2011 | struct _timeb tb; |
35f0d482 KH |
2012 | _ftime (&tb); |
2013 | ||
2014 | tv->tv_sec = tb.time; | |
2015 | tv->tv_usec = tb.millitm * 1000L; | |
97a93095 EZ |
2016 | /* Implementation note: _ftime sometimes doesn't update the dstflag |
2017 | according to the new timezone when the system timezone is | |
2018 | changed. We could fix that by using GetSystemTime and | |
2019 | GetTimeZoneInformation, but that doesn't seem necessary, since | |
2020 | Emacs always calls gettimeofday with the 2nd argument NULL (see | |
e9a9ae03 | 2021 | current_emacs_time). */ |
177c0ea7 | 2022 | if (tz) |
35f0d482 KH |
2023 | { |
2024 | tz->tz_minuteswest = tb.timezone; /* minutes west of Greenwich */ | |
2025 | tz->tz_dsttime = tb.dstflag; /* type of dst correction */ | |
2026 | } | |
2027 | } | |
35f0d482 | 2028 | |
388cdec0 EZ |
2029 | /* Emulate fdutimens. */ |
2030 | ||
2031 | /* Set the access and modification time stamps of FD (a.k.a. FILE) to be | |
2032 | TIMESPEC[0] and TIMESPEC[1], respectively. | |
2033 | FD must be either negative -- in which case it is ignored -- | |
2034 | or a file descriptor that is open on FILE. | |
2035 | If FD is nonnegative, then FILE can be NULL, which means | |
2036 | use just futimes instead of utimes. | |
2037 | If TIMESPEC is null, FAIL. | |
2038 | Return 0 on success, -1 (setting errno) on failure. */ | |
2039 | ||
2040 | int | |
2041 | fdutimens (int fd, char const *file, struct timespec const timespec[2]) | |
2042 | { | |
2043 | struct _utimbuf ut; | |
2044 | ||
2045 | if (!timespec) | |
2046 | { | |
2047 | errno = ENOSYS; | |
2048 | return -1; | |
2049 | } | |
2050 | if (fd < 0 && !file) | |
2051 | { | |
2052 | errno = EBADF; | |
2053 | return -1; | |
2054 | } | |
2055 | ut.actime = timespec[0].tv_sec; | |
2056 | ut.modtime = timespec[1].tv_sec; | |
2057 | if (fd >= 0) | |
2058 | return _futime (fd, &ut); | |
2059 | else | |
2060 | return _utime (file, &ut); | |
2061 | } | |
2062 | ||
2063 | ||
480b0c5b | 2064 | /* ------------------------------------------------------------------------- */ |
b46a6a83 | 2065 | /* IO support and wrapper functions for the Windows API. */ |
480b0c5b | 2066 | /* ------------------------------------------------------------------------- */ |
95ed0025 | 2067 | |
480b0c5b | 2068 | /* Place a wrapper around the MSVC version of ctime. It returns NULL |
177c0ea7 | 2069 | on network directories, so we handle that case here. |
480b0c5b GV |
2070 | (Ulrich Leodolter, 1/11/95). */ |
2071 | char * | |
2072 | sys_ctime (const time_t *t) | |
2073 | { | |
2074 | char *str = (char *) ctime (t); | |
2075 | return (str ? str : "Sun Jan 01 00:00:00 1970"); | |
2076 | } | |
2077 | ||
2078 | /* Emulate sleep...we could have done this with a define, but that | |
2079 | would necessitate including windows.h in the files that used it. | |
2080 | This is much easier. */ | |
2081 | void | |
2082 | sys_sleep (int seconds) | |
2083 | { | |
2084 | Sleep (seconds * 1000); | |
2085 | } | |
2086 | ||
76b3903d | 2087 | /* Internal MSVC functions for low-level descriptor munging */ |
480b0c5b GV |
2088 | extern int __cdecl _set_osfhnd (int fd, long h); |
2089 | extern int __cdecl _free_osfhnd (int fd); | |
2090 | ||
2091 | /* parallel array of private info on file handles */ | |
2092 | filedesc fd_info [ MAXDESC ]; | |
2093 | ||
76b3903d GV |
2094 | typedef struct volume_info_data { |
2095 | struct volume_info_data * next; | |
2096 | ||
2097 | /* time when info was obtained */ | |
2098 | DWORD timestamp; | |
2099 | ||
2100 | /* actual volume info */ | |
2101 | char * root_dir; | |
480b0c5b GV |
2102 | DWORD serialnum; |
2103 | DWORD maxcomp; | |
2104 | DWORD flags; | |
76b3903d GV |
2105 | char * name; |
2106 | char * type; | |
2107 | } volume_info_data; | |
2108 | ||
2109 | /* Global referenced by various functions. */ | |
2110 | static volume_info_data volume_info; | |
2111 | ||
2112 | /* Vector to indicate which drives are local and fixed (for which cached | |
2113 | data never expires). */ | |
2114 | static BOOL fixed_drives[26]; | |
2115 | ||
2116 | /* Consider cached volume information to be stale if older than 10s, | |
2117 | at least for non-local drives. Info for fixed drives is never stale. */ | |
2118 | #define DRIVE_INDEX( c ) ( (c) <= 'Z' ? (c) - 'A' : (c) - 'a' ) | |
2119 | #define VOLINFO_STILL_VALID( root_dir, info ) \ | |
2120 | ( ( isalpha (root_dir[0]) && \ | |
2121 | fixed_drives[ DRIVE_INDEX (root_dir[0]) ] ) \ | |
2122 | || GetTickCount () - info->timestamp < 10000 ) | |
2123 | ||
2124 | /* Cache support functions. */ | |
2125 | ||
2126 | /* Simple linked list with linear search is sufficient. */ | |
2127 | static volume_info_data *volume_cache = NULL; | |
2128 | ||
2129 | static volume_info_data * | |
2130 | lookup_volume_info (char * root_dir) | |
2131 | { | |
2132 | volume_info_data * info; | |
2133 | ||
2134 | for (info = volume_cache; info; info = info->next) | |
05131107 | 2135 | if (xstrcasecmp (info->root_dir, root_dir) == 0) |
76b3903d GV |
2136 | break; |
2137 | return info; | |
2138 | } | |
2139 | ||
2140 | static void | |
2141 | add_volume_info (char * root_dir, volume_info_data * info) | |
2142 | { | |
a302c7ae | 2143 | info->root_dir = xstrdup (root_dir); |
76b3903d GV |
2144 | info->next = volume_cache; |
2145 | volume_cache = info; | |
2146 | } | |
2147 | ||
2148 | ||
2149 | /* Wrapper for GetVolumeInformation, which uses caching to avoid | |
2150 | performance penalty (~2ms on 486 for local drives, 7.5ms for local | |
2151 | cdrom drive, ~5-10ms or more for remote drives on LAN). */ | |
bedf4aab | 2152 | static volume_info_data * |
76b3903d GV |
2153 | GetCachedVolumeInformation (char * root_dir) |
2154 | { | |
2155 | volume_info_data * info; | |
2156 | char default_root[ MAX_PATH ]; | |
2157 | ||
2158 | /* NULL for root_dir means use root from current directory. */ | |
2159 | if (root_dir == NULL) | |
2160 | { | |
2161 | if (GetCurrentDirectory (MAX_PATH, default_root) == 0) | |
2162 | return NULL; | |
2163 | parse_root (default_root, &root_dir); | |
2164 | *root_dir = 0; | |
2165 | root_dir = default_root; | |
2166 | } | |
2167 | ||
2168 | /* Local fixed drives can be cached permanently. Removable drives | |
2169 | cannot be cached permanently, since the volume name and serial | |
2170 | number (if nothing else) can change. Remote drives should be | |
2171 | treated as if they are removable, since there is no sure way to | |
2172 | tell whether they are or not. Also, the UNC association of drive | |
2173 | letters mapped to remote volumes can be changed at any time (even | |
2174 | by other processes) without notice. | |
177c0ea7 | 2175 | |
76b3903d GV |
2176 | As a compromise, so we can benefit from caching info for remote |
2177 | volumes, we use a simple expiry mechanism to invalidate cache | |
2178 | entries that are more than ten seconds old. */ | |
2179 | ||
2180 | #if 0 | |
2181 | /* No point doing this, because WNetGetConnection is even slower than | |
2182 | GetVolumeInformation, consistently taking ~50ms on a 486 (FWIW, | |
2183 | GetDriveType is about the only call of this type which does not | |
2184 | involve network access, and so is extremely quick). */ | |
2185 | ||
2186 | /* Map drive letter to UNC if remote. */ | |
ed3751c8 | 2187 | if (isalpha (root_dir[0]) && !fixed[DRIVE_INDEX (root_dir[0])]) |
76b3903d GV |
2188 | { |
2189 | char remote_name[ 256 ]; | |
2190 | char drive[3] = { root_dir[0], ':' }; | |
2191 | ||
2192 | if (WNetGetConnection (drive, remote_name, sizeof (remote_name)) | |
2193 | == NO_ERROR) | |
2194 | /* do something */ ; | |
2195 | } | |
2196 | #endif | |
2197 | ||
2198 | info = lookup_volume_info (root_dir); | |
2199 | ||
2200 | if (info == NULL || ! VOLINFO_STILL_VALID (root_dir, info)) | |
94eab1c8 JB |
2201 | { |
2202 | char name[ 256 ]; | |
2203 | DWORD serialnum; | |
2204 | DWORD maxcomp; | |
2205 | DWORD flags; | |
2206 | char type[ 256 ]; | |
2207 | ||
2208 | /* Info is not cached, or is stale. */ | |
2209 | if (!GetVolumeInformation (root_dir, | |
2210 | name, sizeof (name), | |
2211 | &serialnum, | |
2212 | &maxcomp, | |
2213 | &flags, | |
2214 | type, sizeof (type))) | |
2215 | return NULL; | |
76b3903d | 2216 | |
94eab1c8 JB |
2217 | /* Cache the volume information for future use, overwriting existing |
2218 | entry if present. */ | |
2219 | if (info == NULL) | |
2220 | { | |
23f86fce | 2221 | info = xmalloc (sizeof (volume_info_data)); |
94eab1c8 JB |
2222 | add_volume_info (root_dir, info); |
2223 | } | |
2224 | else | |
2225 | { | |
2226 | xfree (info->name); | |
2227 | xfree (info->type); | |
2228 | } | |
2229 | ||
2230 | info->name = xstrdup (name); | |
2231 | info->serialnum = serialnum; | |
2232 | info->maxcomp = maxcomp; | |
2233 | info->flags = flags; | |
2234 | info->type = xstrdup (type); | |
2235 | info->timestamp = GetTickCount (); | |
2236 | } | |
76b3903d GV |
2237 | |
2238 | return info; | |
2239 | } | |
480b0c5b | 2240 | |
6dad7178 EZ |
2241 | /* Get information on the volume where NAME is held; set path pointer to |
2242 | start of pathname in NAME (past UNC header\volume header if present), | |
2243 | if pPath is non-NULL. | |
2244 | ||
2245 | Note: if NAME includes symlinks, the information is for the volume | |
2246 | of the symlink, not of its target. That's because, even though | |
2247 | GetVolumeInformation returns information about the symlink target | |
2248 | of its argument, we only pass the root directory to | |
2249 | GetVolumeInformation, not the full NAME. */ | |
bedf4aab | 2250 | static int |
480b0c5b | 2251 | get_volume_info (const char * name, const char ** pPath) |
95ed0025 | 2252 | { |
480b0c5b GV |
2253 | char temp[MAX_PATH]; |
2254 | char *rootname = NULL; /* default to current volume */ | |
76b3903d | 2255 | volume_info_data * info; |
480b0c5b GV |
2256 | |
2257 | if (name == NULL) | |
2258 | return FALSE; | |
2259 | ||
6dad7178 | 2260 | /* Find the root name of the volume if given. */ |
480b0c5b GV |
2261 | if (isalpha (name[0]) && name[1] == ':') |
2262 | { | |
2263 | rootname = temp; | |
2264 | temp[0] = *name++; | |
2265 | temp[1] = *name++; | |
2266 | temp[2] = '\\'; | |
2267 | temp[3] = 0; | |
2268 | } | |
2269 | else if (IS_DIRECTORY_SEP (name[0]) && IS_DIRECTORY_SEP (name[1])) | |
95ed0025 | 2270 | { |
480b0c5b GV |
2271 | char *str = temp; |
2272 | int slashes = 4; | |
2273 | rootname = temp; | |
2274 | do | |
2275 | { | |
2276 | if (IS_DIRECTORY_SEP (*name) && --slashes == 0) | |
2277 | break; | |
2278 | *str++ = *name++; | |
2279 | } | |
2280 | while ( *name ); | |
2281 | ||
480b0c5b GV |
2282 | *str++ = '\\'; |
2283 | *str = 0; | |
95ed0025 | 2284 | } |
480b0c5b GV |
2285 | |
2286 | if (pPath) | |
2287 | *pPath = name; | |
177c0ea7 | 2288 | |
76b3903d GV |
2289 | info = GetCachedVolumeInformation (rootname); |
2290 | if (info != NULL) | |
95ed0025 | 2291 | { |
76b3903d GV |
2292 | /* Set global referenced by other functions. */ |
2293 | volume_info = *info; | |
480b0c5b | 2294 | return TRUE; |
95ed0025 | 2295 | } |
480b0c5b GV |
2296 | return FALSE; |
2297 | } | |
2298 | ||
2299 | /* Determine if volume is FAT format (ie. only supports short 8.3 | |
6dad7178 EZ |
2300 | names); also set path pointer to start of pathname in name, if |
2301 | pPath is non-NULL. */ | |
bedf4aab | 2302 | static int |
480b0c5b GV |
2303 | is_fat_volume (const char * name, const char ** pPath) |
2304 | { | |
2305 | if (get_volume_info (name, pPath)) | |
2306 | return (volume_info.maxcomp == 12); | |
2307 | return FALSE; | |
2308 | } | |
2309 | ||
6dad7178 EZ |
2310 | /* Map filename to a valid 8.3 name if necessary. |
2311 | The result is a pointer to a static buffer, so CAVEAT EMPTOR! */ | |
480b0c5b | 2312 | const char * |
fbd6baed | 2313 | map_w32_filename (const char * name, const char ** pPath) |
480b0c5b GV |
2314 | { |
2315 | static char shortname[MAX_PATH]; | |
2316 | char * str = shortname; | |
2317 | char c; | |
480b0c5b | 2318 | char * path; |
76b3903d | 2319 | const char * save_name = name; |
480b0c5b | 2320 | |
ca149beb AI |
2321 | if (strlen (name) >= MAX_PATH) |
2322 | { | |
2323 | /* Return a filename which will cause callers to fail. */ | |
2324 | strcpy (shortname, "?"); | |
2325 | return shortname; | |
2326 | } | |
2327 | ||
a302c7ae | 2328 | if (is_fat_volume (name, (const char **)&path)) /* truncate to 8.3 */ |
95ed0025 | 2329 | { |
480b0c5b GV |
2330 | register int left = 8; /* maximum number of chars in part */ |
2331 | register int extn = 0; /* extension added? */ | |
2332 | register int dots = 2; /* maximum number of dots allowed */ | |
2333 | ||
2334 | while (name < path) | |
2335 | *str++ = *name++; /* skip past UNC header */ | |
2336 | ||
2337 | while ((c = *name++)) | |
2338 | { | |
2339 | switch ( c ) | |
2340 | { | |
6dad7178 | 2341 | case ':': |
480b0c5b GV |
2342 | case '\\': |
2343 | case '/': | |
6dad7178 | 2344 | *str++ = (c == ':' ? ':' : '\\'); |
480b0c5b GV |
2345 | extn = 0; /* reset extension flags */ |
2346 | dots = 2; /* max 2 dots */ | |
2347 | left = 8; /* max length 8 for main part */ | |
2348 | break; | |
2349 | case '.': | |
2350 | if ( dots ) | |
2351 | { | |
2352 | /* Convert path components of the form .xxx to _xxx, | |
2353 | but leave . and .. as they are. This allows .emacs | |
2354 | to be read as _emacs, for example. */ | |
2355 | ||
2356 | if (! *name || | |
2357 | *name == '.' || | |
2358 | IS_DIRECTORY_SEP (*name)) | |
2359 | { | |
2360 | *str++ = '.'; | |
2361 | dots--; | |
2362 | } | |
2363 | else | |
2364 | { | |
2365 | *str++ = '_'; | |
2366 | left--; | |
2367 | dots = 0; | |
2368 | } | |
2369 | } | |
2370 | else if ( !extn ) | |
2371 | { | |
2372 | *str++ = '.'; | |
2373 | extn = 1; /* we've got an extension */ | |
2374 | left = 3; /* 3 chars in extension */ | |
2375 | } | |
2376 | else | |
2377 | { | |
2378 | /* any embedded dots after the first are converted to _ */ | |
2379 | *str++ = '_'; | |
2380 | } | |
2381 | break; | |
2382 | case '~': | |
2383 | case '#': /* don't lose these, they're important */ | |
2384 | if ( ! left ) | |
2385 | str[-1] = c; /* replace last character of part */ | |
2386 | /* FALLTHRU */ | |
2387 | default: | |
2388 | if ( left ) | |
2389 | { | |
2390 | *str++ = tolower (c); /* map to lower case (looks nicer) */ | |
2391 | left--; | |
2392 | dots = 0; /* started a path component */ | |
2393 | } | |
2394 | break; | |
2395 | } | |
2396 | } | |
2397 | *str = '\0'; | |
fc85cb29 RS |
2398 | } |
2399 | else | |
2400 | { | |
2401 | strcpy (shortname, name); | |
2402 | unixtodos_filename (shortname); | |
95ed0025 | 2403 | } |
480b0c5b GV |
2404 | |
2405 | if (pPath) | |
76b3903d | 2406 | *pPath = shortname + (path - save_name); |
480b0c5b | 2407 | |
fc85cb29 | 2408 | return shortname; |
480b0c5b GV |
2409 | } |
2410 | ||
b3308d2e KH |
2411 | static int |
2412 | is_exec (const char * name) | |
2413 | { | |
2414 | char * p = strrchr (name, '.'); | |
2415 | return | |
2416 | (p != NULL | |
05131107 JR |
2417 | && (xstrcasecmp (p, ".exe") == 0 || |
2418 | xstrcasecmp (p, ".com") == 0 || | |
2419 | xstrcasecmp (p, ".bat") == 0 || | |
2420 | xstrcasecmp (p, ".cmd") == 0)); | |
b3308d2e KH |
2421 | } |
2422 | ||
177c0ea7 | 2423 | /* Emulate the Unix directory procedures opendir, closedir, |
76b3903d GV |
2424 | and readdir. We can't use the procedures supplied in sysdep.c, |
2425 | so we provide them here. */ | |
2426 | ||
2427 | struct direct dir_static; /* simulated directory contents */ | |
2428 | static HANDLE dir_find_handle = INVALID_HANDLE_VALUE; | |
2429 | static int dir_is_fat; | |
2430 | static char dir_pathname[MAXPATHLEN+1]; | |
2431 | static WIN32_FIND_DATA dir_find_data; | |
2432 | ||
9d3355d1 GV |
2433 | /* Support shares on a network resource as subdirectories of a read-only |
2434 | root directory. */ | |
2435 | static HANDLE wnet_enum_handle = INVALID_HANDLE_VALUE; | |
bedf4aab JB |
2436 | static HANDLE open_unc_volume (const char *); |
2437 | static char *read_unc_volume (HANDLE, char *, int); | |
2438 | static void close_unc_volume (HANDLE); | |
9d3355d1 | 2439 | |
76b3903d GV |
2440 | DIR * |
2441 | opendir (char *filename) | |
2442 | { | |
2443 | DIR *dirp; | |
2444 | ||
2445 | /* Opening is done by FindFirstFile. However, a read is inherent to | |
2446 | this operation, so we defer the open until read time. */ | |
2447 | ||
76b3903d GV |
2448 | if (dir_find_handle != INVALID_HANDLE_VALUE) |
2449 | return NULL; | |
9d3355d1 GV |
2450 | if (wnet_enum_handle != INVALID_HANDLE_VALUE) |
2451 | return NULL; | |
2452 | ||
6dad7178 EZ |
2453 | /* Note: We don't support traversal of UNC volumes via symlinks. |
2454 | Doing so would mean punishing 99.99% of use cases by resolving | |
2455 | all the possible symlinks in FILENAME, recursively. */ | |
9d3355d1 GV |
2456 | if (is_unc_volume (filename)) |
2457 | { | |
2458 | wnet_enum_handle = open_unc_volume (filename); | |
2459 | if (wnet_enum_handle == INVALID_HANDLE_VALUE) | |
2460 | return NULL; | |
2461 | } | |
2462 | ||
2463 | if (!(dirp = (DIR *) malloc (sizeof (DIR)))) | |
2464 | return NULL; | |
76b3903d GV |
2465 | |
2466 | dirp->dd_fd = 0; | |
2467 | dirp->dd_loc = 0; | |
2468 | dirp->dd_size = 0; | |
2469 | ||
2470 | strncpy (dir_pathname, map_w32_filename (filename, NULL), MAXPATHLEN); | |
2471 | dir_pathname[MAXPATHLEN] = '\0'; | |
6dad7178 EZ |
2472 | /* Note: We don't support symlinks to file names on FAT volumes. |
2473 | Doing so would mean punishing 99.99% of use cases by resolving | |
2474 | all the possible symlinks in FILENAME, recursively. */ | |
76b3903d GV |
2475 | dir_is_fat = is_fat_volume (filename, NULL); |
2476 | ||
2477 | return dirp; | |
2478 | } | |
2479 | ||
2480 | void | |
2481 | closedir (DIR *dirp) | |
2482 | { | |
2483 | /* If we have a find-handle open, close it. */ | |
2484 | if (dir_find_handle != INVALID_HANDLE_VALUE) | |
2485 | { | |
2486 | FindClose (dir_find_handle); | |
2487 | dir_find_handle = INVALID_HANDLE_VALUE; | |
2488 | } | |
9d3355d1 GV |
2489 | else if (wnet_enum_handle != INVALID_HANDLE_VALUE) |
2490 | { | |
2491 | close_unc_volume (wnet_enum_handle); | |
2492 | wnet_enum_handle = INVALID_HANDLE_VALUE; | |
2493 | } | |
76b3903d GV |
2494 | xfree ((char *) dirp); |
2495 | } | |
2496 | ||
2497 | struct direct * | |
2498 | readdir (DIR *dirp) | |
2499 | { | |
b07103dc EZ |
2500 | int downcase = !NILP (Vw32_downcase_file_names); |
2501 | ||
9d3355d1 GV |
2502 | if (wnet_enum_handle != INVALID_HANDLE_VALUE) |
2503 | { | |
177c0ea7 | 2504 | if (!read_unc_volume (wnet_enum_handle, |
59eb0929 JB |
2505 | dir_find_data.cFileName, |
2506 | MAX_PATH)) | |
9d3355d1 GV |
2507 | return NULL; |
2508 | } | |
76b3903d | 2509 | /* If we aren't dir_finding, do a find-first, otherwise do a find-next. */ |
9d3355d1 | 2510 | else if (dir_find_handle == INVALID_HANDLE_VALUE) |
76b3903d GV |
2511 | { |
2512 | char filename[MAXNAMLEN + 3]; | |
2513 | int ln; | |
2514 | ||
2515 | strcpy (filename, dir_pathname); | |
2516 | ln = strlen (filename) - 1; | |
2517 | if (!IS_DIRECTORY_SEP (filename[ln])) | |
2518 | strcat (filename, "\\"); | |
2519 | strcat (filename, "*"); | |
2520 | ||
6dad7178 EZ |
2521 | /* Note: No need to resolve symlinks in FILENAME, because |
2522 | FindFirst opens the directory that is the target of a | |
2523 | symlink. */ | |
76b3903d GV |
2524 | dir_find_handle = FindFirstFile (filename, &dir_find_data); |
2525 | ||
2526 | if (dir_find_handle == INVALID_HANDLE_VALUE) | |
2527 | return NULL; | |
2528 | } | |
2529 | else | |
2530 | { | |
2531 | if (!FindNextFile (dir_find_handle, &dir_find_data)) | |
2532 | return NULL; | |
2533 | } | |
177c0ea7 | 2534 | |
76b3903d GV |
2535 | /* Emacs never uses this value, so don't bother making it match |
2536 | value returned by stat(). */ | |
2537 | dir_static.d_ino = 1; | |
177c0ea7 | 2538 | |
b07103dc EZ |
2539 | strcpy (dir_static.d_name, dir_find_data.cFileName); |
2540 | ||
2541 | /* If the file name in cFileName[] includes `?' characters, it means | |
2542 | the original file name used characters that cannot be represented | |
2543 | by the current ANSI codepage. To avoid total lossage, retrieve | |
2544 | the short 8+3 alias of the long file name. */ | |
2545 | if (_mbspbrk (dir_static.d_name, "?")) | |
2546 | { | |
2547 | strcpy (dir_static.d_name, dir_find_data.cAlternateFileName); | |
2548 | downcase = 1; /* 8+3 aliases are returned in all caps */ | |
2549 | } | |
2550 | dir_static.d_namlen = strlen (dir_static.d_name); | |
76b3903d GV |
2551 | dir_static.d_reclen = sizeof (struct direct) - MAXNAMLEN + 3 + |
2552 | dir_static.d_namlen - dir_static.d_namlen % 4; | |
177c0ea7 | 2553 | |
192788d7 EZ |
2554 | /* If the file name in cFileName[] includes `?' characters, it means |
2555 | the original file name used characters that cannot be represented | |
2556 | by the current ANSI codepage. To avoid total lossage, retrieve | |
2557 | the short 8+3 alias of the long file name. */ | |
2558 | if (_mbspbrk (dir_find_data.cFileName, "?")) | |
2559 | { | |
2560 | strcpy (dir_static.d_name, dir_find_data.cAlternateFileName); | |
2561 | /* 8+3 aliases are returned in all caps, which could break | |
2562 | various alists that look at filenames' extensions. */ | |
2563 | downcase = 1; | |
2564 | } | |
2565 | else | |
2566 | strcpy (dir_static.d_name, dir_find_data.cFileName); | |
2567 | dir_static.d_namlen = strlen (dir_static.d_name); | |
76b3903d GV |
2568 | if (dir_is_fat) |
2569 | _strlwr (dir_static.d_name); | |
b07103dc | 2570 | else if (downcase) |
76b3903d GV |
2571 | { |
2572 | register char *p; | |
2573 | for (p = dir_static.d_name; *p; p++) | |
2574 | if (*p >= 'a' && *p <= 'z') | |
2575 | break; | |
2576 | if (!*p) | |
2577 | _strlwr (dir_static.d_name); | |
2578 | } | |
177c0ea7 | 2579 | |
76b3903d GV |
2580 | return &dir_static; |
2581 | } | |
2582 | ||
bedf4aab | 2583 | static HANDLE |
e0c181dd | 2584 | open_unc_volume (const char *path) |
9d3355d1 | 2585 | { |
177c0ea7 | 2586 | NETRESOURCE nr; |
9d3355d1 GV |
2587 | HANDLE henum; |
2588 | int result; | |
2589 | ||
177c0ea7 JB |
2590 | nr.dwScope = RESOURCE_GLOBALNET; |
2591 | nr.dwType = RESOURCETYPE_DISK; | |
2592 | nr.dwDisplayType = RESOURCEDISPLAYTYPE_SERVER; | |
2593 | nr.dwUsage = RESOURCEUSAGE_CONTAINER; | |
2594 | nr.lpLocalName = NULL; | |
6e602566 | 2595 | nr.lpRemoteName = (LPSTR)map_w32_filename (path, NULL); |
177c0ea7 JB |
2596 | nr.lpComment = NULL; |
2597 | nr.lpProvider = NULL; | |
9d3355d1 | 2598 | |
ed3751c8 JB |
2599 | result = WNetOpenEnum (RESOURCE_GLOBALNET, RESOURCETYPE_DISK, |
2600 | RESOURCEUSAGE_CONNECTABLE, &nr, &henum); | |
9d3355d1 GV |
2601 | |
2602 | if (result == NO_ERROR) | |
2603 | return henum; | |
2604 | else | |
2605 | return INVALID_HANDLE_VALUE; | |
2606 | } | |
2607 | ||
bedf4aab | 2608 | static char * |
9d3355d1 GV |
2609 | read_unc_volume (HANDLE henum, char *readbuf, int size) |
2610 | { | |
a302c7ae | 2611 | DWORD count; |
9d3355d1 | 2612 | int result; |
a302c7ae | 2613 | DWORD bufsize = 512; |
9d3355d1 GV |
2614 | char *buffer; |
2615 | char *ptr; | |
2616 | ||
2617 | count = 1; | |
2618 | buffer = alloca (bufsize); | |
59eb0929 | 2619 | result = WNetEnumResource (henum, &count, buffer, &bufsize); |
9d3355d1 GV |
2620 | if (result != NO_ERROR) |
2621 | return NULL; | |
2622 | ||
2623 | /* WNetEnumResource returns \\resource\share...skip forward to "share". */ | |
2624 | ptr = ((LPNETRESOURCE) buffer)->lpRemoteName; | |
2625 | ptr += 2; | |
2626 | while (*ptr && !IS_DIRECTORY_SEP (*ptr)) ptr++; | |
2627 | ptr++; | |
2628 | ||
2629 | strncpy (readbuf, ptr, size); | |
2630 | return readbuf; | |
2631 | } | |
2632 | ||
bedf4aab | 2633 | static void |
9d3355d1 GV |
2634 | close_unc_volume (HANDLE henum) |
2635 | { | |
2636 | if (henum != INVALID_HANDLE_VALUE) | |
2637 | WNetCloseEnum (henum); | |
2638 | } | |
2639 | ||
bedf4aab | 2640 | static DWORD |
e0c181dd | 2641 | unc_volume_file_attributes (const char *path) |
9d3355d1 GV |
2642 | { |
2643 | HANDLE henum; | |
2644 | DWORD attrs; | |
2645 | ||
2646 | henum = open_unc_volume (path); | |
2647 | if (henum == INVALID_HANDLE_VALUE) | |
2648 | return -1; | |
2649 | ||
2650 | attrs = FILE_ATTRIBUTE_READONLY | FILE_ATTRIBUTE_DIRECTORY; | |
2651 | ||
2652 | close_unc_volume (henum); | |
2653 | ||
2654 | return attrs; | |
2655 | } | |
2656 | ||
302d7d54 JR |
2657 | /* Ensure a network connection is authenticated. */ |
2658 | static void | |
2659 | logon_network_drive (const char *path) | |
2660 | { | |
2661 | NETRESOURCE resource; | |
2662 | char share[MAX_PATH]; | |
2663 | int i, n_slashes; | |
40a339c8 | 2664 | char drive[4]; |
be4c6380 | 2665 | UINT drvtype; |
40a339c8 | 2666 | |
be4c6380 EZ |
2667 | if (IS_DIRECTORY_SEP (path[0]) && IS_DIRECTORY_SEP (path[1])) |
2668 | drvtype = DRIVE_REMOTE; | |
2669 | else if (path[0] == '\0' || path[1] != ':') | |
2670 | drvtype = GetDriveType (NULL); | |
2671 | else | |
2672 | { | |
2673 | drive[0] = path[0]; | |
2674 | drive[1] = ':'; | |
2675 | drive[2] = '\\'; | |
2676 | drive[3] = '\0'; | |
2677 | drvtype = GetDriveType (drive); | |
2678 | } | |
302d7d54 JR |
2679 | |
2680 | /* Only logon to networked drives. */ | |
be4c6380 | 2681 | if (drvtype != DRIVE_REMOTE) |
302d7d54 | 2682 | return; |
40a339c8 | 2683 | |
302d7d54 JR |
2684 | n_slashes = 2; |
2685 | strncpy (share, path, MAX_PATH); | |
2686 | /* Truncate to just server and share name. */ | |
2687 | for (i = 2; i < MAX_PATH; i++) | |
2688 | { | |
2689 | if (IS_DIRECTORY_SEP (share[i]) && ++n_slashes > 3) | |
2690 | { | |
2691 | share[i] = '\0'; | |
2692 | break; | |
2693 | } | |
2694 | } | |
2695 | ||
2696 | resource.dwType = RESOURCETYPE_DISK; | |
2697 | resource.lpLocalName = NULL; | |
2698 | resource.lpRemoteName = share; | |
2699 | resource.lpProvider = NULL; | |
2700 | ||
2701 | WNetAddConnection2 (&resource, NULL, NULL, CONNECT_INTERACTIVE); | |
2702 | } | |
480b0c5b GV |
2703 | |
2704 | /* Shadow some MSVC runtime functions to map requests for long filenames | |
2705 | to reasonable short names if necessary. This was originally added to | |
177c0ea7 | 2706 | permit running Emacs on NT 3.1 on a FAT partition, which doesn't support |
480b0c5b GV |
2707 | long file names. */ |
2708 | ||
2709 | int | |
2710 | sys_access (const char * path, int mode) | |
2711 | { | |
b3308d2e KH |
2712 | DWORD attributes; |
2713 | ||
8d38f461 EZ |
2714 | /* MSVCRT implementation of 'access' doesn't recognize D_OK, and its |
2715 | newer versions blow up when passed D_OK. */ | |
b3308d2e | 2716 | path = map_w32_filename (path, NULL); |
6dad7178 EZ |
2717 | /* If the last element of PATH is a symlink, we need to resolve it |
2718 | to get the attributes of its target file. Note: any symlinks in | |
2719 | PATH elements other than the last one are transparently resolved | |
2720 | by GetFileAttributes below. */ | |
2721 | if ((volume_info.flags & FILE_SUPPORTS_REPARSE_POINTS) != 0) | |
2722 | path = chase_symlinks (path); | |
2723 | ||
2724 | if ((attributes = GetFileAttributes (path)) == -1) | |
b3308d2e | 2725 | { |
8d38f461 EZ |
2726 | DWORD w32err = GetLastError (); |
2727 | ||
2728 | switch (w32err) | |
2729 | { | |
6dad7178 EZ |
2730 | case ERROR_INVALID_NAME: |
2731 | case ERROR_BAD_PATHNAME: | |
2732 | if (is_unc_volume (path)) | |
2733 | { | |
2734 | attributes = unc_volume_file_attributes (path); | |
2735 | if (attributes == -1) | |
2736 | { | |
2737 | errno = EACCES; | |
2738 | return -1; | |
2739 | } | |
2740 | break; | |
2741 | } | |
2742 | /* FALLTHROUGH */ | |
8d38f461 | 2743 | case ERROR_FILE_NOT_FOUND: |
6dad7178 | 2744 | case ERROR_BAD_NETPATH: |
8d38f461 EZ |
2745 | errno = ENOENT; |
2746 | break; | |
2747 | default: | |
2748 | errno = EACCES; | |
2749 | break; | |
2750 | } | |
b3308d2e KH |
2751 | return -1; |
2752 | } | |
2753 | if ((mode & X_OK) != 0 && !is_exec (path)) | |
2754 | { | |
2755 | errno = EACCES; | |
2756 | return -1; | |
2757 | } | |
2758 | if ((mode & W_OK) != 0 && (attributes & FILE_ATTRIBUTE_READONLY) != 0) | |
2759 | { | |
2760 | errno = EACCES; | |
2761 | return -1; | |
2762 | } | |
2763 | if ((mode & D_OK) != 0 && (attributes & FILE_ATTRIBUTE_DIRECTORY) == 0) | |
2764 | { | |
2765 | errno = EACCES; | |
2766 | return -1; | |
2767 | } | |
2768 | return 0; | |
480b0c5b GV |
2769 | } |
2770 | ||
2771 | int | |
2772 | sys_chdir (const char * path) | |
2773 | { | |
fbd6baed | 2774 | return _chdir (map_w32_filename (path, NULL)); |
480b0c5b GV |
2775 | } |
2776 | ||
2777 | int | |
2778 | sys_chmod (const char * path, int mode) | |
2779 | { | |
6dad7178 EZ |
2780 | path = chase_symlinks (map_w32_filename (path, NULL)); |
2781 | return _chmod (path, mode); | |
480b0c5b GV |
2782 | } |
2783 | ||
2d5ab4bf EZ |
2784 | int |
2785 | sys_chown (const char *path, uid_t owner, gid_t group) | |
2786 | { | |
e3b88685 | 2787 | if (sys_chmod (path, S_IREAD) == -1) /* check if file exists */ |
2d5ab4bf EZ |
2788 | return -1; |
2789 | return 0; | |
2790 | } | |
2791 | ||
480b0c5b GV |
2792 | int |
2793 | sys_creat (const char * path, int mode) | |
2794 | { | |
fbd6baed | 2795 | return _creat (map_w32_filename (path, NULL), mode); |
480b0c5b GV |
2796 | } |
2797 | ||
2798 | FILE * | |
b56ceb92 | 2799 | sys_fopen (const char * path, const char * mode) |
480b0c5b GV |
2800 | { |
2801 | int fd; | |
2802 | int oflag; | |
2803 | const char * mode_save = mode; | |
2804 | ||
2805 | /* Force all file handles to be non-inheritable. This is necessary to | |
2806 | ensure child processes don't unwittingly inherit handles that might | |
2807 | prevent future file access. */ | |
2808 | ||
2809 | if (mode[0] == 'r') | |
2810 | oflag = O_RDONLY; | |
2811 | else if (mode[0] == 'w' || mode[0] == 'a') | |
2812 | oflag = O_WRONLY | O_CREAT | O_TRUNC; | |
95ed0025 | 2813 | else |
480b0c5b GV |
2814 | return NULL; |
2815 | ||
2816 | /* Only do simplistic option parsing. */ | |
2817 | while (*++mode) | |
2818 | if (mode[0] == '+') | |
2819 | { | |
2820 | oflag &= ~(O_RDONLY | O_WRONLY); | |
2821 | oflag |= O_RDWR; | |
2822 | } | |
2823 | else if (mode[0] == 'b') | |
2824 | { | |
2825 | oflag &= ~O_TEXT; | |
2826 | oflag |= O_BINARY; | |
2827 | } | |
2828 | else if (mode[0] == 't') | |
2829 | { | |
2830 | oflag &= ~O_BINARY; | |
2831 | oflag |= O_TEXT; | |
2832 | } | |
2833 | else break; | |
2834 | ||
fbd6baed | 2835 | fd = _open (map_w32_filename (path, NULL), oflag | _O_NOINHERIT, 0644); |
480b0c5b GV |
2836 | if (fd < 0) |
2837 | return NULL; | |
2838 | ||
76b3903d | 2839 | return _fdopen (fd, mode_save); |
95ed0025 | 2840 | } |
480b0c5b | 2841 | |
76b3903d | 2842 | /* This only works on NTFS volumes, but is useful to have. */ |
480b0c5b | 2843 | int |
76b3903d | 2844 | sys_link (const char * old, const char * new) |
480b0c5b | 2845 | { |
76b3903d GV |
2846 | HANDLE fileh; |
2847 | int result = -1; | |
2848 | char oldname[MAX_PATH], newname[MAX_PATH]; | |
2849 | ||
2850 | if (old == NULL || new == NULL) | |
2851 | { | |
2852 | errno = ENOENT; | |
2853 | return -1; | |
2854 | } | |
2855 | ||
2856 | strcpy (oldname, map_w32_filename (old, NULL)); | |
2857 | strcpy (newname, map_w32_filename (new, NULL)); | |
2858 | ||
2859 | fileh = CreateFile (oldname, 0, 0, NULL, OPEN_EXISTING, | |
2860 | FILE_FLAG_BACKUP_SEMANTICS, NULL); | |
2861 | if (fileh != INVALID_HANDLE_VALUE) | |
2862 | { | |
2863 | int wlen; | |
2864 | ||
2865 | /* Confusingly, the "alternate" stream name field does not apply | |
2866 | when restoring a hard link, and instead contains the actual | |
2867 | stream data for the link (ie. the name of the link to create). | |
2868 | The WIN32_STREAM_ID structure before the cStreamName field is | |
2869 | the stream header, which is then immediately followed by the | |
2870 | stream data. */ | |
2871 | ||
2872 | struct { | |
2873 | WIN32_STREAM_ID wid; | |
2874 | WCHAR wbuffer[MAX_PATH]; /* extra space for link name */ | |
2875 | } data; | |
2876 | ||
2877 | wlen = MultiByteToWideChar (CP_ACP, MB_PRECOMPOSED, newname, -1, | |
2878 | data.wid.cStreamName, MAX_PATH); | |
2879 | if (wlen > 0) | |
2880 | { | |
2881 | LPVOID context = NULL; | |
2882 | DWORD wbytes = 0; | |
2883 | ||
2884 | data.wid.dwStreamId = BACKUP_LINK; | |
2885 | data.wid.dwStreamAttributes = 0; | |
ed3751c8 | 2886 | data.wid.Size.LowPart = wlen * sizeof (WCHAR); |
76b3903d GV |
2887 | data.wid.Size.HighPart = 0; |
2888 | data.wid.dwStreamNameSize = 0; | |
2889 | ||
2890 | if (BackupWrite (fileh, (LPBYTE)&data, | |
2891 | offsetof (WIN32_STREAM_ID, cStreamName) | |
2892 | + data.wid.Size.LowPart, | |
2893 | &wbytes, FALSE, FALSE, &context) | |
2894 | && BackupWrite (fileh, NULL, 0, &wbytes, TRUE, FALSE, &context)) | |
2895 | { | |
2896 | /* succeeded */ | |
2897 | result = 0; | |
2898 | } | |
2899 | else | |
2900 | { | |
2901 | /* Should try mapping GetLastError to errno; for now just | |
2902 | indicate a general error (eg. links not supported). */ | |
2903 | errno = EINVAL; // perhaps EMLINK? | |
2904 | } | |
2905 | } | |
2906 | ||
2907 | CloseHandle (fileh); | |
2908 | } | |
2909 | else | |
2910 | errno = ENOENT; | |
2911 | ||
2912 | return result; | |
480b0c5b GV |
2913 | } |
2914 | ||
2915 | int | |
2916 | sys_mkdir (const char * path) | |
2917 | { | |
fbd6baed | 2918 | return _mkdir (map_w32_filename (path, NULL)); |
480b0c5b GV |
2919 | } |
2920 | ||
9d1778b1 RS |
2921 | /* Because of long name mapping issues, we need to implement this |
2922 | ourselves. Also, MSVC's _mktemp returns NULL when it can't generate | |
2923 | a unique name, instead of setting the input template to an empty | |
2924 | string. | |
2925 | ||
2926 | Standard algorithm seems to be use pid or tid with a letter on the | |
2927 | front (in place of the 6 X's) and cycle through the letters to find a | |
2928 | unique name. We extend that to allow any reasonable character as the | |
2929 | first of the 6 X's. */ | |
480b0c5b GV |
2930 | char * |
2931 | sys_mktemp (char * template) | |
2932 | { | |
9d1778b1 RS |
2933 | char * p; |
2934 | int i; | |
2935 | unsigned uid = GetCurrentThreadId (); | |
2936 | static char first_char[] = "abcdefghijklmnopqrstuvwyz0123456789!%-_@#"; | |
2937 | ||
2938 | if (template == NULL) | |
2939 | return NULL; | |
2940 | p = template + strlen (template); | |
2941 | i = 5; | |
2942 | /* replace up to the last 5 X's with uid in decimal */ | |
2943 | while (--p >= template && p[0] == 'X' && --i >= 0) | |
2944 | { | |
2945 | p[0] = '0' + uid % 10; | |
2946 | uid /= 10; | |
2947 | } | |
2948 | ||
2949 | if (i < 0 && p[0] == 'X') | |
2950 | { | |
2951 | i = 0; | |
2952 | do | |
2953 | { | |
2954 | int save_errno = errno; | |
2955 | p[0] = first_char[i]; | |
2956 | if (sys_access (template, 0) < 0) | |
2957 | { | |
2958 | errno = save_errno; | |
2959 | return template; | |
2960 | } | |
2961 | } | |
2962 | while (++i < sizeof (first_char)); | |
2963 | } | |
2964 | ||
2965 | /* Template is badly formed or else we can't generate a unique name, | |
2966 | so return empty string */ | |
2967 | template[0] = 0; | |
2968 | return template; | |
480b0c5b GV |
2969 | } |
2970 | ||
2971 | int | |
2972 | sys_open (const char * path, int oflag, int mode) | |
2973 | { | |
302f0b29 GM |
2974 | const char* mpath = map_w32_filename (path, NULL); |
2975 | /* Try to open file without _O_CREAT, to be able to write to hidden | |
2976 | and system files. Force all file handles to be | |
2977 | non-inheritable. */ | |
2978 | int res = _open (mpath, (oflag & ~_O_CREAT) | _O_NOINHERIT, mode); | |
2979 | if (res >= 0) | |
2980 | return res; | |
2981 | return _open (mpath, oflag | _O_NOINHERIT, mode); | |
480b0c5b GV |
2982 | } |
2983 | ||
2984 | int | |
2985 | sys_rename (const char * oldname, const char * newname) | |
2986 | { | |
cfb5e855 | 2987 | BOOL result; |
b3308d2e | 2988 | char temp[MAX_PATH]; |
069d2b50 L |
2989 | int newname_dev; |
2990 | int oldname_dev; | |
480b0c5b | 2991 | |
e9e23e23 | 2992 | /* MoveFile on Windows 95 doesn't correctly change the short file name |
5162ffce MB |
2993 | alias in a number of circumstances (it is not easy to predict when |
2994 | just by looking at oldname and newname, unfortunately). In these | |
2995 | cases, renaming through a temporary name avoids the problem. | |
2996 | ||
e9e23e23 | 2997 | A second problem on Windows 95 is that renaming through a temp name when |
5162ffce MB |
2998 | newname is uppercase fails (the final long name ends up in |
2999 | lowercase, although the short alias might be uppercase) UNLESS the | |
3000 | long temp name is not 8.3. | |
3001 | ||
e9e23e23 | 3002 | So, on Windows 95 we always rename through a temp name, and we make sure |
5162ffce | 3003 | the temp name has a long extension to ensure correct renaming. */ |
480b0c5b | 3004 | |
fbd6baed | 3005 | strcpy (temp, map_w32_filename (oldname, NULL)); |
480b0c5b | 3006 | |
069d2b50 L |
3007 | /* volume_info is set indirectly by map_w32_filename. */ |
3008 | oldname_dev = volume_info.serialnum; | |
3009 | ||
417a7a0e | 3010 | if (os_subtype == OS_9X) |
480b0c5b | 3011 | { |
b3308d2e | 3012 | char * o; |
480b0c5b | 3013 | char * p; |
b3308d2e KH |
3014 | int i = 0; |
3015 | ||
3016 | oldname = map_w32_filename (oldname, NULL); | |
657d08d3 | 3017 | if ((o = strrchr (oldname, '\\'))) |
b3308d2e KH |
3018 | o++; |
3019 | else | |
3020 | o = (char *) oldname; | |
480b0c5b | 3021 | |
657d08d3 | 3022 | if ((p = strrchr (temp, '\\'))) |
480b0c5b GV |
3023 | p++; |
3024 | else | |
3025 | p = temp; | |
b3308d2e KH |
3026 | |
3027 | do | |
3028 | { | |
3029 | /* Force temp name to require a manufactured 8.3 alias - this | |
3030 | seems to make the second rename work properly. */ | |
f313ee82 | 3031 | sprintf (p, "_.%s.%u", o, i); |
b3308d2e | 3032 | i++; |
58f0cb7e | 3033 | result = rename (oldname, temp); |
b3308d2e KH |
3034 | } |
3035 | /* This loop must surely terminate! */ | |
cfb5e855 | 3036 | while (result < 0 && errno == EEXIST); |
58f0cb7e | 3037 | if (result < 0) |
480b0c5b GV |
3038 | return -1; |
3039 | } | |
3040 | ||
fffa137c | 3041 | /* Emulate Unix behavior - newname is deleted if it already exists |
5162ffce | 3042 | (at least if it is a file; don't do this for directories). |
76b3903d | 3043 | |
b3308d2e KH |
3044 | Since we mustn't do this if we are just changing the case of the |
3045 | file name (we would end up deleting the file we are trying to | |
3046 | rename!), we let rename detect if the destination file already | |
3047 | exists - that way we avoid the possible pitfalls of trying to | |
3048 | determine ourselves whether two names really refer to the same | |
3049 | file, which is not always possible in the general case. (Consider | |
3050 | all the permutations of shared or subst'd drives, etc.) */ | |
3051 | ||
3052 | newname = map_w32_filename (newname, NULL); | |
069d2b50 L |
3053 | |
3054 | /* volume_info is set indirectly by map_w32_filename. */ | |
3055 | newname_dev = volume_info.serialnum; | |
3056 | ||
eb9ea53f | 3057 | result = rename (temp, newname); |
b3308d2e | 3058 | |
069d2b50 L |
3059 | if (result < 0) |
3060 | { | |
6dad7178 | 3061 | DWORD w32err = GetLastError (); |
069d2b50 L |
3062 | |
3063 | if (errno == EACCES | |
3064 | && newname_dev != oldname_dev) | |
3065 | { | |
3066 | /* The implementation of `rename' on Windows does not return | |
3067 | errno = EXDEV when you are moving a directory to a | |
3068 | different storage device (ex. logical disk). It returns | |
3069 | EACCES instead. So here we handle such situations and | |
3070 | return EXDEV. */ | |
3071 | DWORD attributes; | |
3072 | ||
3073 | if ((attributes = GetFileAttributes (temp)) != -1 | |
6dad7178 | 3074 | && (attributes & FILE_ATTRIBUTE_DIRECTORY)) |
069d2b50 L |
3075 | errno = EXDEV; |
3076 | } | |
3077 | else if (errno == EEXIST) | |
3078 | { | |
3079 | if (_chmod (newname, 0666) != 0) | |
3080 | return result; | |
3081 | if (_unlink (newname) != 0) | |
3082 | return result; | |
3083 | result = rename (temp, newname); | |
3084 | } | |
6dad7178 EZ |
3085 | else if (w32err == ERROR_PRIVILEGE_NOT_HELD |
3086 | && is_symlink (temp)) | |
3087 | { | |
3088 | /* This is Windows prohibiting the user from creating a | |
3089 | symlink in another place, since that requires | |
3090 | privileges. */ | |
3091 | errno = EPERM; | |
3092 | } | |
069d2b50 | 3093 | } |
480b0c5b | 3094 | |
eb9ea53f | 3095 | return result; |
480b0c5b GV |
3096 | } |
3097 | ||
3098 | int | |
3099 | sys_rmdir (const char * path) | |
3100 | { | |
fbd6baed | 3101 | return _rmdir (map_w32_filename (path, NULL)); |
480b0c5b GV |
3102 | } |
3103 | ||
3104 | int | |
3105 | sys_unlink (const char * path) | |
3106 | { | |
16bb7578 GV |
3107 | path = map_w32_filename (path, NULL); |
3108 | ||
3109 | /* On Unix, unlink works without write permission. */ | |
3110 | _chmod (path, 0666); | |
3111 | return _unlink (path); | |
480b0c5b GV |
3112 | } |
3113 | ||
3114 | static FILETIME utc_base_ft; | |
5da9424d | 3115 | static ULONGLONG utc_base; /* In 100ns units */ |
480b0c5b GV |
3116 | static int init = 0; |
3117 | ||
5da9424d JB |
3118 | #define FILETIME_TO_U64(result, ft) \ |
3119 | do { \ | |
3120 | ULARGE_INTEGER uiTemp; \ | |
3121 | uiTemp.LowPart = (ft).dwLowDateTime; \ | |
3122 | uiTemp.HighPart = (ft).dwHighDateTime; \ | |
3123 | result = uiTemp.QuadPart; \ | |
3124 | } while (0) | |
3125 | ||
3126 | static void | |
b56ceb92 | 3127 | initialize_utc_base (void) |
7c80d5ec | 3128 | { |
5da9424d JB |
3129 | /* Determine the delta between 1-Jan-1601 and 1-Jan-1970. */ |
3130 | SYSTEMTIME st; | |
3131 | ||
3132 | st.wYear = 1970; | |
3133 | st.wMonth = 1; | |
3134 | st.wDay = 1; | |
3135 | st.wHour = 0; | |
3136 | st.wMinute = 0; | |
3137 | st.wSecond = 0; | |
3138 | st.wMilliseconds = 0; | |
3139 | ||
3140 | SystemTimeToFileTime (&st, &utc_base_ft); | |
3141 | FILETIME_TO_U64 (utc_base, utc_base_ft); | |
7c80d5ec EZ |
3142 | } |
3143 | ||
480b0c5b GV |
3144 | static time_t |
3145 | convert_time (FILETIME ft) | |
3146 | { | |
5da9424d | 3147 | ULONGLONG tmp; |
480b0c5b GV |
3148 | |
3149 | if (!init) | |
3150 | { | |
9d4f32e8 | 3151 | initialize_utc_base (); |
480b0c5b GV |
3152 | init = 1; |
3153 | } | |
3154 | ||
3155 | if (CompareFileTime (&ft, &utc_base_ft) < 0) | |
3156 | return 0; | |
3157 | ||
5da9424d JB |
3158 | FILETIME_TO_U64 (tmp, ft); |
3159 | return (time_t) ((tmp - utc_base) / 10000000L); | |
480b0c5b GV |
3160 | } |
3161 | ||
bedf4aab | 3162 | static void |
480b0c5b GV |
3163 | convert_from_time_t (time_t time, FILETIME * pft) |
3164 | { | |
5da9424d | 3165 | ULARGE_INTEGER tmp; |
480b0c5b GV |
3166 | |
3167 | if (!init) | |
3168 | { | |
5da9424d | 3169 | initialize_utc_base (); |
480b0c5b GV |
3170 | init = 1; |
3171 | } | |
3172 | ||
3173 | /* time in 100ns units since 1-Jan-1601 */ | |
5da9424d JB |
3174 | tmp.QuadPart = (ULONGLONG) time * 10000000L + utc_base; |
3175 | pft->dwHighDateTime = tmp.HighPart; | |
3176 | pft->dwLowDateTime = tmp.LowPart; | |
480b0c5b | 3177 | } |
480b0c5b | 3178 | |
76b3903d GV |
3179 | #if 0 |
3180 | /* No reason to keep this; faking inode values either by hashing or even | |
3181 | using the file index from GetInformationByHandle, is not perfect and | |
3182 | so by default Emacs doesn't use the inode values on Windows. | |
3183 | Instead, we now determine file-truename correctly (except for | |
3184 | possible drive aliasing etc). */ | |
3185 | ||
3186 | /* Modified version of "PJW" algorithm (see the "Dragon" compiler book). */ | |
480b0c5b | 3187 | static unsigned |
76b3903d | 3188 | hashval (const unsigned char * str) |
480b0c5b GV |
3189 | { |
3190 | unsigned h = 0; | |
480b0c5b GV |
3191 | while (*str) |
3192 | { | |
3193 | h = (h << 4) + *str++; | |
76b3903d | 3194 | h ^= (h >> 28); |
480b0c5b GV |
3195 | } |
3196 | return h; | |
3197 | } | |
3198 | ||
3199 | /* Return the hash value of the canonical pathname, excluding the | |
3200 | drive/UNC header, to get a hopefully unique inode number. */ | |
76b3903d | 3201 | static DWORD |
480b0c5b GV |
3202 | generate_inode_val (const char * name) |
3203 | { | |
3204 | char fullname[ MAX_PATH ]; | |
3205 | char * p; | |
3206 | unsigned hash; | |
3207 | ||
76b3903d | 3208 | /* Get the truly canonical filename, if it exists. (Note: this |
e1dbe924 | 3209 | doesn't resolve aliasing due to subst commands, or recognize hard |
76b3903d GV |
3210 | links. */ |
3211 | if (!w32_get_long_filename ((char *)name, fullname, MAX_PATH)) | |
1088b922 | 3212 | emacs_abort (); |
76b3903d GV |
3213 | |
3214 | parse_root (fullname, &p); | |
fbd6baed | 3215 | /* Normal W32 filesystems are still case insensitive. */ |
480b0c5b | 3216 | _strlwr (p); |
76b3903d | 3217 | return hashval (p); |
480b0c5b GV |
3218 | } |
3219 | ||
76b3903d GV |
3220 | #endif |
3221 | ||
8aaaec6b | 3222 | static PSECURITY_DESCRIPTOR |
6dad7178 EZ |
3223 | get_file_security_desc_by_handle (HANDLE h) |
3224 | { | |
3225 | PSECURITY_DESCRIPTOR psd = NULL; | |
3226 | DWORD err; | |
3227 | SECURITY_INFORMATION si = OWNER_SECURITY_INFORMATION | |
3228 | | GROUP_SECURITY_INFORMATION /* | DACL_SECURITY_INFORMATION */ ; | |
3229 | ||
3230 | err = get_security_info (h, SE_FILE_OBJECT, si, | |
3231 | NULL, NULL, NULL, NULL, &psd); | |
3232 | if (err != ERROR_SUCCESS) | |
3233 | return NULL; | |
3234 | ||
3235 | return psd; | |
3236 | } | |
3237 | ||
3238 | static PSECURITY_DESCRIPTOR | |
3239 | get_file_security_desc_by_name (const char *fname) | |
8aaaec6b EZ |
3240 | { |
3241 | PSECURITY_DESCRIPTOR psd = NULL; | |
3242 | DWORD sd_len, err; | |
3243 | SECURITY_INFORMATION si = OWNER_SECURITY_INFORMATION | |
3244 | | GROUP_SECURITY_INFORMATION /* | DACL_SECURITY_INFORMATION */ ; | |
3245 | ||
3246 | if (!get_file_security (fname, si, psd, 0, &sd_len)) | |
3247 | { | |
3248 | err = GetLastError (); | |
3249 | if (err != ERROR_INSUFFICIENT_BUFFER) | |
3250 | return NULL; | |
3251 | } | |
3252 | ||
3253 | psd = xmalloc (sd_len); | |
3254 | if (!get_file_security (fname, si, psd, sd_len, &sd_len)) | |
3255 | { | |
3256 | xfree (psd); | |
3257 | return NULL; | |
3258 | } | |
3259 | ||
3260 | return psd; | |
3261 | } | |
3262 | ||
3263 | static DWORD | |
3264 | get_rid (PSID sid) | |
3265 | { | |
3266 | unsigned n_subauthorities; | |
3267 | ||
3268 | /* Use the last sub-authority value of the RID, the relative | |
3269 | portion of the SID, as user/group ID. */ | |
3270 | n_subauthorities = *get_sid_sub_authority_count (sid); | |
3271 | if (n_subauthorities < 1) | |
3272 | return 0; /* the "World" RID */ | |
3273 | return *get_sid_sub_authority (sid, n_subauthorities - 1); | |
3274 | } | |
3275 | ||
f8b35b24 EZ |
3276 | /* Caching SID and account values for faster lokup. */ |
3277 | ||
3278 | #ifdef __GNUC__ | |
3279 | # define FLEXIBLE_ARRAY_MEMBER | |
3280 | #else | |
3281 | # define FLEXIBLE_ARRAY_MEMBER 1 | |
3282 | #endif | |
3283 | ||
3284 | struct w32_id { | |
22749e9a | 3285 | unsigned rid; |
f8b35b24 EZ |
3286 | struct w32_id *next; |
3287 | char name[GNLEN+1]; | |
3288 | unsigned char sid[FLEXIBLE_ARRAY_MEMBER]; | |
3289 | }; | |
3290 | ||
3291 | static struct w32_id *w32_idlist; | |
3292 | ||
3293 | static int | |
22749e9a | 3294 | w32_cached_id (PSID sid, unsigned *id, char *name) |
f8b35b24 EZ |
3295 | { |
3296 | struct w32_id *tail, *found; | |
3297 | ||
3298 | for (found = NULL, tail = w32_idlist; tail; tail = tail->next) | |
3299 | { | |
3300 | if (equal_sid ((PSID)tail->sid, sid)) | |
3301 | { | |
3302 | found = tail; | |
3303 | break; | |
3304 | } | |
3305 | } | |
3306 | if (found) | |
3307 | { | |
3308 | *id = found->rid; | |
3309 | strcpy (name, found->name); | |
3310 | return 1; | |
3311 | } | |
3312 | else | |
3313 | return 0; | |
3314 | } | |
3315 | ||
3316 | static void | |
22749e9a | 3317 | w32_add_to_cache (PSID sid, unsigned id, char *name) |
f8b35b24 EZ |
3318 | { |
3319 | DWORD sid_len; | |
3320 | struct w32_id *new_entry; | |
3321 | ||
3322 | /* We don't want to leave behind stale cache from when Emacs was | |
3323 | dumped. */ | |
3324 | if (initialized) | |
3325 | { | |
3326 | sid_len = get_length_sid (sid); | |
3327 | new_entry = xmalloc (offsetof (struct w32_id, sid) + sid_len); | |
3328 | if (new_entry) | |
3329 | { | |
3330 | new_entry->rid = id; | |
3331 | strcpy (new_entry->name, name); | |
3332 | copy_sid (sid_len, (PSID)new_entry->sid, sid); | |
3333 | new_entry->next = w32_idlist; | |
3334 | w32_idlist = new_entry; | |
3335 | } | |
3336 | } | |
3337 | } | |
3338 | ||
8aaaec6b EZ |
3339 | #define UID 1 |
3340 | #define GID 2 | |
3341 | ||
3342 | static int | |
3343 | get_name_and_id (PSECURITY_DESCRIPTOR psd, const char *fname, | |
22749e9a | 3344 | unsigned *id, char *nm, int what) |
8aaaec6b EZ |
3345 | { |
3346 | PSID sid = NULL; | |
3347 | char machine[MAX_COMPUTERNAME_LENGTH+1]; | |
3348 | BOOL dflt; | |
3349 | SID_NAME_USE ignore; | |
3350 | char name[UNLEN+1]; | |
3351 | DWORD name_len = sizeof (name); | |
3352 | char domain[1024]; | |
ed3751c8 | 3353 | DWORD domain_len = sizeof (domain); |
8aaaec6b EZ |
3354 | char *mp = NULL; |
3355 | int use_dflt = 0; | |
3356 | int result; | |
3357 | ||
3358 | if (what == UID) | |
3359 | result = get_security_descriptor_owner (psd, &sid, &dflt); | |
3360 | else if (what == GID) | |
3361 | result = get_security_descriptor_group (psd, &sid, &dflt); | |
3362 | else | |
3363 | result = 0; | |
3364 | ||
3365 | if (!result || !is_valid_sid (sid)) | |
3366 | use_dflt = 1; | |
f8b35b24 | 3367 | else if (!w32_cached_id (sid, id, nm)) |
8aaaec6b EZ |
3368 | { |
3369 | /* If FNAME is a UNC, we need to lookup account on the | |
3370 | specified machine. */ | |
3371 | if (IS_DIRECTORY_SEP (fname[0]) && IS_DIRECTORY_SEP (fname[1]) | |
3372 | && fname[2] != '\0') | |
3373 | { | |
3374 | const char *s; | |
3375 | char *p; | |
3376 | ||
3377 | for (s = fname + 2, p = machine; | |
3378 | *s && !IS_DIRECTORY_SEP (*s); s++, p++) | |
3379 | *p = *s; | |
3380 | *p = '\0'; | |
3381 | mp = machine; | |
3382 | } | |
3383 | ||
3384 | if (!lookup_account_sid (mp, sid, name, &name_len, | |
3385 | domain, &domain_len, &ignore) | |
3386 | || name_len > UNLEN+1) | |
3387 | use_dflt = 1; | |
3388 | else | |
3389 | { | |
3390 | *id = get_rid (sid); | |
3391 | strcpy (nm, name); | |
f8b35b24 | 3392 | w32_add_to_cache (sid, *id, name); |
8aaaec6b EZ |
3393 | } |
3394 | } | |
3395 | return use_dflt; | |
3396 | } | |
3397 | ||
3398 | static void | |
bedf4aab JB |
3399 | get_file_owner_and_group (PSECURITY_DESCRIPTOR psd, |
3400 | const char *fname, | |
3401 | struct stat *st) | |
8aaaec6b EZ |
3402 | { |
3403 | int dflt_usr = 0, dflt_grp = 0; | |
3404 | ||
3405 | if (!psd) | |
3406 | { | |
3407 | dflt_usr = 1; | |
3408 | dflt_grp = 1; | |
3409 | } | |
3410 | else | |
3411 | { | |
3412 | if (get_name_and_id (psd, fname, &st->st_uid, st->st_uname, UID)) | |
3413 | dflt_usr = 1; | |
3414 | if (get_name_and_id (psd, fname, &st->st_gid, st->st_gname, GID)) | |
3415 | dflt_grp = 1; | |
3416 | } | |
3417 | /* Consider files to belong to current user/group, if we cannot get | |
3418 | more accurate information. */ | |
3419 | if (dflt_usr) | |
3420 | { | |
3421 | st->st_uid = dflt_passwd.pw_uid; | |
3422 | strcpy (st->st_uname, dflt_passwd.pw_name); | |
3423 | } | |
3424 | if (dflt_grp) | |
3425 | { | |
3426 | st->st_gid = dflt_passwd.pw_gid; | |
3427 | strcpy (st->st_gname, dflt_group.gr_name); | |
3428 | } | |
3429 | } | |
3430 | ||
be4c6380 EZ |
3431 | /* Return non-zero if NAME is a potentially slow filesystem. */ |
3432 | int | |
3433 | is_slow_fs (const char *name) | |
3434 | { | |
3435 | char drive_root[4]; | |
3436 | UINT devtype; | |
3437 | ||
3438 | if (IS_DIRECTORY_SEP (name[0]) && IS_DIRECTORY_SEP (name[1])) | |
3439 | devtype = DRIVE_REMOTE; /* assume UNC name is remote */ | |
3440 | else if (!(strlen (name) >= 2 && IS_DEVICE_SEP (name[1]))) | |
3441 | devtype = GetDriveType (NULL); /* use root of current drive */ | |
3442 | else | |
3443 | { | |
3444 | /* GetDriveType needs the root directory of the drive. */ | |
3445 | strncpy (drive_root, name, 2); | |
3446 | drive_root[2] = '\\'; | |
3447 | drive_root[3] = '\0'; | |
3448 | devtype = GetDriveType (drive_root); | |
3449 | } | |
3450 | return !(devtype == DRIVE_FIXED || devtype == DRIVE_RAMDISK); | |
3451 | } | |
3452 | ||
480b0c5b GV |
3453 | /* MSVC stat function can't cope with UNC names and has other bugs, so |
3454 | replace it with our own. This also allows us to calculate consistent | |
6dad7178 EZ |
3455 | inode values and owner/group without hacks in the main Emacs code. */ |
3456 | ||
3457 | static int | |
3458 | stat_worker (const char * path, struct stat * buf, int follow_symlinks) | |
480b0c5b | 3459 | { |
6dad7178 | 3460 | char *name, *save_name, *r; |
480b0c5b GV |
3461 | WIN32_FIND_DATA wfd; |
3462 | HANDLE fh; | |
6dad7178 | 3463 | unsigned __int64 fake_inode = 0; |
480b0c5b GV |
3464 | int permission; |
3465 | int len; | |
3466 | int rootdir = FALSE; | |
8aaaec6b | 3467 | PSECURITY_DESCRIPTOR psd = NULL; |
6dad7178 EZ |
3468 | int is_a_symlink = 0; |
3469 | DWORD file_flags = FILE_FLAG_BACKUP_SEMANTICS; | |
3470 | DWORD access_rights = 0; | |
3471 | DWORD fattrs = 0, serialnum = 0, fs_high = 0, fs_low = 0, nlinks = 1; | |
3472 | FILETIME ctime, atime, wtime; | |
480b0c5b GV |
3473 | |
3474 | if (path == NULL || buf == NULL) | |
3475 | { | |
3476 | errno = EFAULT; | |
3477 | return -1; | |
3478 | } | |
3479 | ||
6dad7178 | 3480 | save_name = name = (char *) map_w32_filename (path, &path); |
22189f79 EZ |
3481 | /* Must be valid filename, no wild cards or other invalid |
3482 | characters. We use _mbspbrk to support multibyte strings that | |
3483 | might look to strpbrk as if they included literal *, ?, and other | |
3484 | characters mentioned below that are disallowed by Windows | |
3485 | filesystems. */ | |
3486 | if (_mbspbrk (name, "*?|<>\"")) | |
480b0c5b GV |
3487 | { |
3488 | errno = ENOENT; | |
3489 | return -1; | |
3490 | } | |
3491 | ||
3492 | /* Remove trailing directory separator, unless name is the root | |
3493 | directory of a drive or UNC volume in which case ensure there | |
3494 | is a trailing separator. */ | |
3495 | len = strlen (name); | |
480b0c5b GV |
3496 | name = strcpy (alloca (len + 2), name); |
3497 | ||
6dad7178 EZ |
3498 | /* Avoid a somewhat costly call to is_symlink if the filesystem |
3499 | doesn't support symlinks. */ | |
3500 | if ((volume_info.flags & FILE_SUPPORTS_REPARSE_POINTS) != 0) | |
3501 | is_a_symlink = is_symlink (name); | |
3502 | ||
3503 | /* Plan A: Open the file and get all the necessary information via | |
3504 | the resulting handle. This solves several issues in one blow: | |
3505 | ||
3506 | . retrieves attributes for the target of a symlink, if needed | |
3507 | . gets attributes of root directories and symlinks pointing to | |
3508 | root directories, thus avoiding the need for special-casing | |
3509 | these and detecting them by examining the file-name format | |
3510 | . retrieves more accurate attributes (e.g., non-zero size for | |
3511 | some directories, esp. directories that are junction points) | |
3512 | . correctly resolves "c:/..", "/.." and similar file names | |
3513 | . avoids run-time penalties for 99% of use cases | |
3514 | ||
3515 | Plan A is always tried first, unless the user asked not to (but | |
3516 | if the file is a symlink and we need to follow links, we try Plan | |
3517 | A even if the user asked not to). | |
3518 | ||
3519 | If Plan A fails, we go to Plan B (below), where various | |
3520 | potentially expensive techniques must be used to handle "special" | |
3521 | files such as UNC volumes etc. */ | |
8aaaec6b | 3522 | if (!(NILP (Vw32_get_true_file_attributes) |
19ced600 | 3523 | || (EQ (Vw32_get_true_file_attributes, Qlocal) && is_slow_fs (name))) |
6dad7178 EZ |
3524 | /* Following symlinks requires getting the info by handle. */ |
3525 | || (is_a_symlink && follow_symlinks)) | |
480b0c5b | 3526 | { |
6dad7178 EZ |
3527 | BY_HANDLE_FILE_INFORMATION info; |
3528 | ||
3529 | if (is_a_symlink && !follow_symlinks) | |
3530 | file_flags |= FILE_FLAG_OPEN_REPARSE_POINT; | |
3531 | /* READ_CONTROL access rights are required to get security info | |
3532 | by handle. But if the OS doesn't support security in the | |
3533 | first place, we don't need to try. */ | |
3534 | if (is_windows_9x () != TRUE) | |
3535 | access_rights |= READ_CONTROL; | |
3536 | ||
3537 | fh = CreateFile (name, access_rights, 0, NULL, OPEN_EXISTING, | |
3538 | file_flags, NULL); | |
3539 | /* If CreateFile fails with READ_CONTROL, try again with zero as | |
3540 | access rights. */ | |
3541 | if (fh == INVALID_HANDLE_VALUE && access_rights) | |
3542 | fh = CreateFile (name, 0, 0, NULL, OPEN_EXISTING, | |
3543 | file_flags, NULL); | |
3544 | if (fh == INVALID_HANDLE_VALUE) | |
3545 | goto no_true_file_attributes; | |
3546 | ||
3ed8598c | 3547 | /* This is more accurate in terms of getting the correct number |
aa5ee2a3 | 3548 | of links, but is quite slow (it is noticeable when Emacs is |
480b0c5b | 3549 | making a list of file name completions). */ |
480b0c5b GV |
3550 | if (GetFileInformationByHandle (fh, &info)) |
3551 | { | |
6dad7178 | 3552 | nlinks = info.nNumberOfLinks; |
76b3903d GV |
3553 | /* Might as well use file index to fake inode values, but this |
3554 | is not guaranteed to be unique unless we keep a handle open | |
3555 | all the time (even then there are situations where it is | |
3556 | not unique). Reputedly, there are at most 48 bits of info | |
3557 | (on NTFS, presumably less on FAT). */ | |
e3b88685 EZ |
3558 | fake_inode = info.nFileIndexHigh; |
3559 | fake_inode <<= 32; | |
3560 | fake_inode += info.nFileIndexLow; | |
6dad7178 EZ |
3561 | serialnum = info.dwVolumeSerialNumber; |
3562 | fs_high = info.nFileSizeHigh; | |
3563 | fs_low = info.nFileSizeLow; | |
3564 | ctime = info.ftCreationTime; | |
3565 | atime = info.ftLastAccessTime; | |
3566 | wtime = info.ftLastWriteTime; | |
3567 | fattrs = info.dwFileAttributes; | |
480b0c5b GV |
3568 | } |
3569 | else | |
3570 | { | |
6dad7178 EZ |
3571 | /* We don't go to Plan B here, because it's not clear that |
3572 | it's a good idea. The only known use case where | |
3573 | CreateFile succeeds, but GetFileInformationByHandle fails | |
3574 | (with ERROR_INVALID_FUNCTION) is for character devices | |
3575 | such as NUL, PRN, etc. For these, switching to Plan B is | |
3576 | a net loss, because we lose the character device | |
3577 | attribute returned by GetFileType below (FindFirstFile | |
3578 | doesn't set that bit in the attributes), and the other | |
3579 | fields don't make sense for character devices anyway. | |
3580 | Emacs doesn't really care for non-file entities in the | |
3581 | context of l?stat, so neither do we. */ | |
3582 | ||
3583 | /* w32err is assigned so one could put a breakpoint here and | |
3584 | examine its value, when GetFileInformationByHandle | |
3585 | fails. */ | |
3586 | DWORD w32err = GetLastError (); | |
3587 | ||
3588 | switch (w32err) | |
3589 | { | |
3590 | case ERROR_FILE_NOT_FOUND: /* can this ever happen? */ | |
3591 | errno = ENOENT; | |
3592 | return -1; | |
3593 | } | |
01f31dfb AI |
3594 | } |
3595 | ||
6dad7178 EZ |
3596 | /* Test for a symlink before testing for a directory, since |
3597 | symlinks to directories have the directory bit set, but we | |
3598 | don't want them to appear as directories. */ | |
3599 | if (is_a_symlink && !follow_symlinks) | |
3600 | buf->st_mode = S_IFLNK; | |
3601 | else if (fattrs & FILE_ATTRIBUTE_DIRECTORY) | |
3602 | buf->st_mode = S_IFDIR; | |
93e0f0da JR |
3603 | else |
3604 | { | |
6dad7178 EZ |
3605 | DWORD ftype = GetFileType (fh); |
3606 | ||
3607 | switch (ftype) | |
93e0f0da JR |
3608 | { |
3609 | case FILE_TYPE_DISK: | |
e3b88685 | 3610 | buf->st_mode = S_IFREG; |
93e0f0da JR |
3611 | break; |
3612 | case FILE_TYPE_PIPE: | |
e3b88685 | 3613 | buf->st_mode = S_IFIFO; |
93e0f0da JR |
3614 | break; |
3615 | case FILE_TYPE_CHAR: | |
3616 | case FILE_TYPE_UNKNOWN: | |
3617 | default: | |
e3b88685 | 3618 | buf->st_mode = S_IFCHR; |
93e0f0da | 3619 | } |
480b0c5b | 3620 | } |
6dad7178 EZ |
3621 | /* We produce the fallback owner and group data, based on the |
3622 | current user that runs Emacs, in the following cases: | |
3623 | ||
3624 | . this is Windows 9X | |
3625 | . getting security by handle failed, and we need to produce | |
3626 | information for the target of a symlink (this is better | |
3627 | than producing a potentially misleading info about the | |
3628 | symlink itself) | |
3629 | ||
3630 | If getting security by handle fails, and we don't need to | |
3631 | resolve symlinks, we try getting security by name. */ | |
3632 | if (is_windows_9x () != TRUE) | |
3633 | psd = get_file_security_desc_by_handle (fh); | |
3634 | if (psd) | |
3635 | { | |
3636 | get_file_owner_and_group (psd, name, buf); | |
3637 | LocalFree (psd); | |
3638 | } | |
3639 | else if (is_windows_9x () == TRUE) | |
3640 | get_file_owner_and_group (NULL, name, buf); | |
3641 | else if (!(is_a_symlink && follow_symlinks)) | |
3642 | { | |
3643 | psd = get_file_security_desc_by_name (name); | |
3644 | get_file_owner_and_group (psd, name, buf); | |
3645 | xfree (psd); | |
3646 | } | |
3647 | else | |
3648 | get_file_owner_and_group (NULL, name, buf); | |
01f31dfb | 3649 | CloseHandle (fh); |
76b3903d GV |
3650 | } |
3651 | else | |
3652 | { | |
6dad7178 EZ |
3653 | no_true_file_attributes: |
3654 | /* Plan B: Either getting a handle on the file failed, or the | |
3655 | caller explicitly asked us to not bother making this | |
3656 | information more accurate. | |
3657 | ||
3658 | Implementation note: In Plan B, we never bother to resolve | |
3659 | symlinks, even if we got here because we tried Plan A and | |
3660 | failed. That's because, even if the caller asked for extra | |
3661 | precision by setting Vw32_get_true_file_attributes to t, | |
3662 | resolving symlinks requires acquiring a file handle to the | |
3663 | symlink, which we already know will fail. And if the user | |
3664 | did not ask for extra precision, resolving symlinks will fly | |
3665 | in the face of that request, since the user then wants the | |
3666 | lightweight version of the code. */ | |
3667 | rootdir = (path >= save_name + len - 1 | |
3668 | && (IS_DIRECTORY_SEP (*path) || *path == 0)); | |
3669 | ||
3670 | /* If name is "c:/.." or "/.." then stat "c:/" or "/". */ | |
3671 | r = IS_DEVICE_SEP (name[1]) ? &name[2] : name; | |
3672 | if (IS_DIRECTORY_SEP (r[0]) | |
3673 | && r[1] == '.' && r[2] == '.' && r[3] == '\0') | |
3674 | r[1] = r[2] = '\0'; | |
3675 | ||
3676 | /* Note: If NAME is a symlink to the root of a UNC volume | |
3677 | (i.e. "\\SERVER"), we will not detect that here, and we will | |
3678 | return data about the symlink as result of FindFirst below. | |
3679 | This is unfortunate, but that marginal use case does not | |
3680 | justify a call to chase_symlinks which would impose a penalty | |
3681 | on all the other use cases. (We get here for symlinks to | |
3682 | roots of UNC volumes because CreateFile above fails for them, | |
3683 | unlike with symlinks to root directories X:\ of drives.) */ | |
3684 | if (is_unc_volume (name)) | |
3685 | { | |
3686 | fattrs = unc_volume_file_attributes (name); | |
3687 | if (fattrs == -1) | |
3688 | return -1; | |
3689 | ||
3690 | ctime = atime = wtime = utc_base_ft; | |
3691 | } | |
3692 | else if (rootdir) | |
3693 | { | |
3694 | if (!IS_DIRECTORY_SEP (name[len-1])) | |
3695 | strcat (name, "\\"); | |
3696 | if (GetDriveType (name) < 2) | |
3697 | { | |
3698 | errno = ENOENT; | |
3699 | return -1; | |
3700 | } | |
3701 | ||
3702 | fattrs = FILE_ATTRIBUTE_DIRECTORY; | |
3703 | ctime = atime = wtime = utc_base_ft; | |
3704 | } | |
3705 | else | |
3706 | { | |
3707 | if (IS_DIRECTORY_SEP (name[len-1])) | |
3708 | name[len - 1] = 0; | |
3709 | ||
3710 | /* (This is hacky, but helps when doing file completions on | |
3711 | network drives.) Optimize by using information available from | |
3712 | active readdir if possible. */ | |
3713 | len = strlen (dir_pathname); | |
3714 | if (IS_DIRECTORY_SEP (dir_pathname[len-1])) | |
3715 | len--; | |
3716 | if (dir_find_handle != INVALID_HANDLE_VALUE | |
3717 | && !(is_a_symlink && follow_symlinks) | |
3718 | && strnicmp (save_name, dir_pathname, len) == 0 | |
3719 | && IS_DIRECTORY_SEP (name[len]) | |
3720 | && xstrcasecmp (name + len + 1, dir_static.d_name) == 0) | |
3721 | { | |
3722 | /* This was the last entry returned by readdir. */ | |
3723 | wfd = dir_find_data; | |
3724 | } | |
3725 | else | |
3726 | { | |
3727 | logon_network_drive (name); | |
3728 | ||
3729 | fh = FindFirstFile (name, &wfd); | |
3730 | if (fh == INVALID_HANDLE_VALUE) | |
3731 | { | |
3732 | errno = ENOENT; | |
3733 | return -1; | |
3734 | } | |
3735 | FindClose (fh); | |
3736 | } | |
3737 | /* Note: if NAME is a symlink, the information we get from | |
3738 | FindFirstFile is for the symlink, not its target. */ | |
3739 | fattrs = wfd.dwFileAttributes; | |
3740 | ctime = wfd.ftCreationTime; | |
3741 | atime = wfd.ftLastAccessTime; | |
3742 | wtime = wfd.ftLastWriteTime; | |
3743 | fs_high = wfd.nFileSizeHigh; | |
3744 | fs_low = wfd.nFileSizeLow; | |
3745 | fake_inode = 0; | |
3746 | nlinks = 1; | |
3747 | serialnum = volume_info.serialnum; | |
3748 | } | |
3749 | if (is_a_symlink && !follow_symlinks) | |
3750 | buf->st_mode = S_IFLNK; | |
3751 | else if (fattrs & FILE_ATTRIBUTE_DIRECTORY) | |
3752 | buf->st_mode = S_IFDIR; | |
3753 | else | |
3754 | buf->st_mode = S_IFREG; | |
8aaaec6b EZ |
3755 | |
3756 | get_file_owner_and_group (NULL, name, buf); | |
76b3903d GV |
3757 | } |
3758 | ||
3759 | #if 0 | |
3760 | /* Not sure if there is any point in this. */ | |
3761 | if (!NILP (Vw32_generate_fake_inodes)) | |
3762 | fake_inode = generate_inode_val (name); | |
3763 | else if (fake_inode == 0) | |
3764 | { | |
3765 | /* For want of something better, try to make everything unique. */ | |
3766 | static DWORD gen_num = 0; | |
3767 | fake_inode = ++gen_num; | |
480b0c5b | 3768 | } |
76b3903d GV |
3769 | #endif |
3770 | ||
6dad7178 | 3771 | buf->st_ino = fake_inode; |
480b0c5b | 3772 | |
6dad7178 EZ |
3773 | buf->st_dev = serialnum; |
3774 | buf->st_rdev = serialnum; | |
480b0c5b | 3775 | |
6dad7178 | 3776 | buf->st_size = fs_high; |
8aaaec6b | 3777 | buf->st_size <<= 32; |
6dad7178 EZ |
3778 | buf->st_size += fs_low; |
3779 | buf->st_nlink = nlinks; | |
480b0c5b GV |
3780 | |
3781 | /* Convert timestamps to Unix format. */ | |
6dad7178 EZ |
3782 | buf->st_mtime = convert_time (wtime); |
3783 | buf->st_atime = convert_time (atime); | |
480b0c5b | 3784 | if (buf->st_atime == 0) buf->st_atime = buf->st_mtime; |
6dad7178 | 3785 | buf->st_ctime = convert_time (ctime); |
480b0c5b GV |
3786 | if (buf->st_ctime == 0) buf->st_ctime = buf->st_mtime; |
3787 | ||
3788 | /* determine rwx permissions */ | |
6dad7178 EZ |
3789 | if (is_a_symlink && !follow_symlinks) |
3790 | permission = S_IREAD | S_IWRITE | S_IEXEC; /* Posix expectations */ | |
480b0c5b | 3791 | else |
6dad7178 EZ |
3792 | { |
3793 | if (fattrs & FILE_ATTRIBUTE_READONLY) | |
3794 | permission = S_IREAD; | |
3795 | else | |
3796 | permission = S_IREAD | S_IWRITE; | |
177c0ea7 | 3797 | |
6dad7178 EZ |
3798 | if (fattrs & FILE_ATTRIBUTE_DIRECTORY) |
3799 | permission |= S_IEXEC; | |
3800 | else if (is_exec (name)) | |
3801 | permission |= S_IEXEC; | |
3802 | } | |
480b0c5b GV |
3803 | |
3804 | buf->st_mode |= permission | (permission >> 3) | (permission >> 6); | |
3805 | ||
3806 | return 0; | |
3807 | } | |
3808 | ||
6dad7178 EZ |
3809 | int |
3810 | stat (const char * path, struct stat * buf) | |
3811 | { | |
3812 | return stat_worker (path, buf, 1); | |
3813 | } | |
3814 | ||
3815 | int | |
3816 | lstat (const char * path, struct stat * buf) | |
3817 | { | |
3818 | return stat_worker (path, buf, 0); | |
3819 | } | |
3820 | ||
16bb7578 GV |
3821 | /* Provide fstat and utime as well as stat for consistent handling of |
3822 | file timestamps. */ | |
3823 | int | |
3824 | fstat (int desc, struct stat * buf) | |
3825 | { | |
3826 | HANDLE fh = (HANDLE) _get_osfhandle (desc); | |
3827 | BY_HANDLE_FILE_INFORMATION info; | |
e3b88685 | 3828 | unsigned __int64 fake_inode; |
16bb7578 GV |
3829 | int permission; |
3830 | ||
3831 | switch (GetFileType (fh) & ~FILE_TYPE_REMOTE) | |
3832 | { | |
3833 | case FILE_TYPE_DISK: | |
e3b88685 | 3834 | buf->st_mode = S_IFREG; |
16bb7578 GV |
3835 | if (!GetFileInformationByHandle (fh, &info)) |
3836 | { | |
3837 | errno = EACCES; | |
3838 | return -1; | |
3839 | } | |
3840 | break; | |
3841 | case FILE_TYPE_PIPE: | |
e3b88685 | 3842 | buf->st_mode = S_IFIFO; |
16bb7578 GV |
3843 | goto non_disk; |
3844 | case FILE_TYPE_CHAR: | |
3845 | case FILE_TYPE_UNKNOWN: | |
3846 | default: | |
e3b88685 | 3847 | buf->st_mode = S_IFCHR; |
16bb7578 GV |
3848 | non_disk: |
3849 | memset (&info, 0, sizeof (info)); | |
3850 | info.dwFileAttributes = 0; | |
3851 | info.ftCreationTime = utc_base_ft; | |
3852 | info.ftLastAccessTime = utc_base_ft; | |
3853 | info.ftLastWriteTime = utc_base_ft; | |
3854 | } | |
3855 | ||
3856 | if (info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) | |
e3b88685 | 3857 | buf->st_mode = S_IFDIR; |
93e0f0da JR |
3858 | |
3859 | buf->st_nlink = info.nNumberOfLinks; | |
3860 | /* Might as well use file index to fake inode values, but this | |
3861 | is not guaranteed to be unique unless we keep a handle open | |
3862 | all the time (even then there are situations where it is | |
3863 | not unique). Reputedly, there are at most 48 bits of info | |
3864 | (on NTFS, presumably less on FAT). */ | |
e3b88685 EZ |
3865 | fake_inode = info.nFileIndexHigh; |
3866 | fake_inode <<= 32; | |
3867 | fake_inode += info.nFileIndexLow; | |
16bb7578 GV |
3868 | |
3869 | /* MSVC defines _ino_t to be short; other libc's might not. */ | |
3870 | if (sizeof (buf->st_ino) == 2) | |
3871 | buf->st_ino = fake_inode ^ (fake_inode >> 16); | |
3872 | else | |
3873 | buf->st_ino = fake_inode; | |
3874 | ||
8aaaec6b EZ |
3875 | /* Consider files to belong to current user. |
3876 | FIXME: this should use GetSecurityInfo API, but it is only | |
3877 | available for _WIN32_WINNT >= 0x501. */ | |
07f7980a EZ |
3878 | buf->st_uid = dflt_passwd.pw_uid; |
3879 | buf->st_gid = dflt_passwd.pw_gid; | |
8aaaec6b EZ |
3880 | strcpy (buf->st_uname, dflt_passwd.pw_name); |
3881 | strcpy (buf->st_gname, dflt_group.gr_name); | |
16bb7578 GV |
3882 | |
3883 | buf->st_dev = info.dwVolumeSerialNumber; | |
3884 | buf->st_rdev = info.dwVolumeSerialNumber; | |
3885 | ||
8aaaec6b EZ |
3886 | buf->st_size = info.nFileSizeHigh; |
3887 | buf->st_size <<= 32; | |
3888 | buf->st_size += info.nFileSizeLow; | |
16bb7578 GV |
3889 | |
3890 | /* Convert timestamps to Unix format. */ | |
3891 | buf->st_mtime = convert_time (info.ftLastWriteTime); | |
3892 | buf->st_atime = convert_time (info.ftLastAccessTime); | |
3893 | if (buf->st_atime == 0) buf->st_atime = buf->st_mtime; | |
3894 | buf->st_ctime = convert_time (info.ftCreationTime); | |
3895 | if (buf->st_ctime == 0) buf->st_ctime = buf->st_mtime; | |
3896 | ||
3897 | /* determine rwx permissions */ | |
3898 | if (info.dwFileAttributes & FILE_ATTRIBUTE_READONLY) | |
e3b88685 | 3899 | permission = S_IREAD; |
16bb7578 | 3900 | else |
e3b88685 | 3901 | permission = S_IREAD | S_IWRITE; |
177c0ea7 | 3902 | |
16bb7578 | 3903 | if (info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) |
e3b88685 | 3904 | permission |= S_IEXEC; |
16bb7578 GV |
3905 | else |
3906 | { | |
3907 | #if 0 /* no way of knowing the filename */ | |
3908 | char * p = strrchr (name, '.'); | |
3909 | if (p != NULL && | |
05131107 JR |
3910 | (xstrcasecmp (p, ".exe") == 0 || |
3911 | xstrcasecmp (p, ".com") == 0 || | |
3912 | xstrcasecmp (p, ".bat") == 0 || | |
3913 | xstrcasecmp (p, ".cmd") == 0)) | |
e3b88685 | 3914 | permission |= S_IEXEC; |
16bb7578 GV |
3915 | #endif |
3916 | } | |
3917 | ||
3918 | buf->st_mode |= permission | (permission >> 3) | (permission >> 6); | |
3919 | ||
3920 | return 0; | |
3921 | } | |
3922 | ||
3923 | int | |
3924 | utime (const char *name, struct utimbuf *times) | |
3925 | { | |
3926 | struct utimbuf deftime; | |
3927 | HANDLE fh; | |
3928 | FILETIME mtime; | |
3929 | FILETIME atime; | |
3930 | ||
3931 | if (times == NULL) | |
3932 | { | |
3933 | deftime.modtime = deftime.actime = time (NULL); | |
3934 | times = &deftime; | |
3935 | } | |
3936 | ||
3937 | /* Need write access to set times. */ | |
0d9f584b | 3938 | fh = CreateFile (name, FILE_WRITE_ATTRIBUTES, |
0ace05d3 EZ |
3939 | /* If NAME specifies a directory, FILE_SHARE_DELETE |
3940 | allows other processes to delete files inside it, | |
3941 | while we have the directory open. */ | |
0d9f584b EZ |
3942 | FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, |
3943 | 0, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL); | |
7604f298 | 3944 | if (fh != INVALID_HANDLE_VALUE) |
16bb7578 GV |
3945 | { |
3946 | convert_from_time_t (times->actime, &atime); | |
3947 | convert_from_time_t (times->modtime, &mtime); | |
3948 | if (!SetFileTime (fh, NULL, &atime, &mtime)) | |
3949 | { | |
3950 | CloseHandle (fh); | |
3951 | errno = EACCES; | |
3952 | return -1; | |
3953 | } | |
3954 | CloseHandle (fh); | |
3955 | } | |
3956 | else | |
3957 | { | |
3958 | errno = EINVAL; | |
3959 | return -1; | |
3960 | } | |
3961 | return 0; | |
3962 | } | |
3963 | ||
7c80d5ec | 3964 | \f |
6dad7178 EZ |
3965 | /* Symlink-related functions. */ |
3966 | #ifndef SYMBOLIC_LINK_FLAG_DIRECTORY | |
3967 | #define SYMBOLIC_LINK_FLAG_DIRECTORY 0x1 | |
3968 | #endif | |
3969 | ||
0f7bb05d | 3970 | int |
6dad7178 | 3971 | symlink (char const *filename, char const *linkname) |
0f7bb05d | 3972 | { |
6dad7178 EZ |
3973 | char linkfn[MAX_PATH], *tgtfn; |
3974 | DWORD flags = 0; | |
3975 | int dir_access, filename_ends_in_slash; | |
3976 | ||
3977 | /* Diagnostics follows Posix as much as possible. */ | |
3978 | if (filename == NULL || linkname == NULL) | |
3979 | { | |
3980 | errno = EFAULT; | |
3981 | return -1; | |
3982 | } | |
3983 | if (!*filename) | |
3984 | { | |
3985 | errno = ENOENT; | |
3986 | return -1; | |
3987 | } | |
3988 | if (strlen (filename) > MAX_PATH || strlen (linkname) > MAX_PATH) | |
3989 | { | |
3990 | errno = ENAMETOOLONG; | |
3991 | return -1; | |
3992 | } | |
3993 | ||
3994 | strcpy (linkfn, map_w32_filename (linkname, NULL)); | |
3995 | if ((volume_info.flags & FILE_SUPPORTS_REPARSE_POINTS) == 0) | |
3996 | { | |
3997 | errno = EPERM; | |
3998 | return -1; | |
3999 | } | |
4000 | ||
4001 | /* Note: since empty FILENAME was already rejected, we can safely | |
4002 | refer to FILENAME[1]. */ | |
4003 | if (!(IS_DIRECTORY_SEP (filename[0]) || IS_DEVICE_SEP (filename[1]))) | |
4004 | { | |
4005 | /* Non-absolute FILENAME is understood as being relative to | |
4006 | LINKNAME's directory. We need to prepend that directory to | |
4007 | FILENAME to get correct results from sys_access below, since | |
4008 | otherwise it will interpret FILENAME relative to the | |
4009 | directory where the Emacs process runs. Note that | |
4010 | make-symbolic-link always makes sure LINKNAME is a fully | |
4011 | expanded file name. */ | |
4012 | char tem[MAX_PATH]; | |
4013 | char *p = linkfn + strlen (linkfn); | |
4014 | ||
4015 | while (p > linkfn && !IS_ANY_SEP (p[-1])) | |
4016 | p--; | |
4017 | if (p > linkfn) | |
4018 | strncpy (tem, linkfn, p - linkfn); | |
4019 | tem[p - linkfn] = '\0'; | |
4020 | strcat (tem, filename); | |
4021 | dir_access = sys_access (tem, D_OK); | |
4022 | } | |
4023 | else | |
4024 | dir_access = sys_access (filename, D_OK); | |
4025 | ||
4026 | /* Since Windows distinguishes between symlinks to directories and | |
8b2e00a3 | 4027 | to files, we provide a kludgy feature: if FILENAME doesn't |
6dad7178 EZ |
4028 | exist, but ends in a slash, we create a symlink to directory. If |
4029 | FILENAME exists and is a directory, we always create a symlink to | |
4030 | directory. */ | |
4031 | filename_ends_in_slash = IS_DIRECTORY_SEP (filename[strlen (filename) - 1]); | |
4032 | if (dir_access == 0 || filename_ends_in_slash) | |
4033 | flags = SYMBOLIC_LINK_FLAG_DIRECTORY; | |
4034 | ||
4035 | tgtfn = (char *)map_w32_filename (filename, NULL); | |
4036 | if (filename_ends_in_slash) | |
4037 | tgtfn[strlen (tgtfn) - 1] = '\0'; | |
4038 | ||
4039 | errno = 0; | |
4040 | if (!create_symbolic_link (linkfn, tgtfn, flags)) | |
4041 | { | |
4042 | /* ENOSYS is set by create_symbolic_link, when it detects that | |
4043 | the OS doesn't support the CreateSymbolicLink API. */ | |
4044 | if (errno != ENOSYS) | |
4045 | { | |
4046 | DWORD w32err = GetLastError (); | |
4047 | ||
4048 | switch (w32err) | |
4049 | { | |
4050 | /* ERROR_SUCCESS is sometimes returned when LINKFN and | |
4051 | TGTFN point to the same file name, go figure. */ | |
4052 | case ERROR_SUCCESS: | |
4053 | case ERROR_FILE_EXISTS: | |
4054 | errno = EEXIST; | |
4055 | break; | |
4056 | case ERROR_ACCESS_DENIED: | |
4057 | errno = EACCES; | |
4058 | break; | |
4059 | case ERROR_FILE_NOT_FOUND: | |
4060 | case ERROR_PATH_NOT_FOUND: | |
4061 | case ERROR_BAD_NETPATH: | |
4062 | case ERROR_INVALID_REPARSE_DATA: | |
4063 | errno = ENOENT; | |
4064 | break; | |
4065 | case ERROR_DIRECTORY: | |
4066 | errno = EISDIR; | |
4067 | break; | |
4068 | case ERROR_PRIVILEGE_NOT_HELD: | |
4069 | case ERROR_NOT_ALL_ASSIGNED: | |
4070 | errno = EPERM; | |
4071 | break; | |
4072 | case ERROR_DISK_FULL: | |
4073 | errno = ENOSPC; | |
4074 | break; | |
4075 | default: | |
4076 | errno = EINVAL; | |
4077 | break; | |
4078 | } | |
4079 | } | |
4080 | return -1; | |
4081 | } | |
4082 | return 0; | |
0f7bb05d EZ |
4083 | } |
4084 | ||
6dad7178 EZ |
4085 | /* A quick inexpensive test of whether FILENAME identifies a file that |
4086 | is a symlink. Returns non-zero if it is, zero otherwise. FILENAME | |
4087 | must already be in the normalized form returned by | |
4088 | map_w32_filename. | |
4089 | ||
4090 | Note: for repeated operations on many files, it is best to test | |
4091 | whether the underlying volume actually supports symlinks, by | |
4092 | testing the FILE_SUPPORTS_REPARSE_POINTS bit in volume's flags, and | |
4093 | avoid the call to this function if it doesn't. That's because the | |
8b2e00a3 | 4094 | call to GetFileAttributes takes a non-negligible time, especially |
6dad7178 EZ |
4095 | on non-local or removable filesystems. See stat_worker for an |
4096 | example of how to do that. */ | |
4097 | static int | |
4098 | is_symlink (const char *filename) | |
4099 | { | |
4100 | DWORD attrs; | |
4101 | WIN32_FIND_DATA wfd; | |
4102 | HANDLE fh; | |
4103 | ||
4104 | attrs = GetFileAttributes (filename); | |
4105 | if (attrs == -1) | |
4106 | { | |
4107 | DWORD w32err = GetLastError (); | |
4108 | ||
4109 | switch (w32err) | |
4110 | { | |
4111 | case ERROR_BAD_NETPATH: /* network share, can't be a symlink */ | |
4112 | break; | |
4113 | case ERROR_ACCESS_DENIED: | |
4114 | errno = EACCES; | |
4115 | break; | |
4116 | case ERROR_FILE_NOT_FOUND: | |
4117 | case ERROR_PATH_NOT_FOUND: | |
4118 | default: | |
4119 | errno = ENOENT; | |
4120 | break; | |
4121 | } | |
4122 | return 0; | |
4123 | } | |
4124 | if ((attrs & FILE_ATTRIBUTE_REPARSE_POINT) == 0) | |
4125 | return 0; | |
4126 | logon_network_drive (filename); | |
4127 | fh = FindFirstFile (filename, &wfd); | |
4128 | if (fh == INVALID_HANDLE_VALUE) | |
4129 | return 0; | |
4130 | FindClose (fh); | |
4131 | return (wfd.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) != 0 | |
4132 | && (wfd.dwReserved0 & IO_REPARSE_TAG_SYMLINK) == IO_REPARSE_TAG_SYMLINK; | |
4133 | } | |
4134 | ||
4135 | /* If NAME identifies a symbolic link, copy into BUF the file name of | |
4136 | the symlink's target. Copy at most BUF_SIZE bytes, and do NOT | |
4137 | null-terminate the target name, even if it fits. Return the number | |
4138 | of bytes copied, or -1 if NAME is not a symlink or any error was | |
4139 | encountered while resolving it. The file name copied into BUF is | |
4140 | encoded in the current ANSI codepage. */ | |
0f7bb05d | 4141 | ssize_t |
6dad7178 | 4142 | readlink (const char *name, char *buf, size_t buf_size) |
0f7bb05d | 4143 | { |
6dad7178 EZ |
4144 | const char *path; |
4145 | TOKEN_PRIVILEGES privs; | |
4146 | int restore_privs = 0; | |
4147 | HANDLE sh; | |
4148 | ssize_t retval; | |
4149 | ||
4150 | if (name == NULL) | |
4151 | { | |
4152 | errno = EFAULT; | |
4153 | return -1; | |
4154 | } | |
4155 | if (!*name) | |
4156 | { | |
4157 | errno = ENOENT; | |
4158 | return -1; | |
4159 | } | |
4160 | ||
4161 | path = map_w32_filename (name, NULL); | |
4162 | ||
4163 | if (strlen (path) > MAX_PATH) | |
4164 | { | |
4165 | errno = ENAMETOOLONG; | |
4166 | return -1; | |
4167 | } | |
4168 | ||
4169 | errno = 0; | |
4170 | if (is_windows_9x () == TRUE | |
4171 | || (volume_info.flags & FILE_SUPPORTS_REPARSE_POINTS) == 0 | |
4172 | || !is_symlink (path)) | |
4173 | { | |
4174 | if (!errno) | |
4175 | errno = EINVAL; /* not a symlink */ | |
4176 | return -1; | |
4177 | } | |
4178 | ||
4179 | /* Done with simple tests, now we're in for some _real_ work. */ | |
4180 | if (enable_privilege (SE_BACKUP_NAME, TRUE, &privs)) | |
4181 | restore_privs = 1; | |
4182 | /* Implementation note: From here and onward, don't return early, | |
4183 | since that will fail to restore the original set of privileges of | |
4184 | the calling thread. */ | |
4185 | ||
4186 | retval = -1; /* not too optimistic, are we? */ | |
4187 | ||
4188 | /* Note: In the next call to CreateFile, we use zero as the 2nd | |
4189 | argument because, when the symlink is a hidden/system file, | |
4190 | e.g. 'C:\Users\All Users', GENERIC_READ fails with | |
4191 | ERROR_ACCESS_DENIED. Zero seems to work just fine, both for file | |
4192 | and directory symlinks. */ | |
4193 | sh = CreateFile (path, 0, 0, NULL, OPEN_EXISTING, | |
4194 | FILE_FLAG_OPEN_REPARSE_POINT | FILE_FLAG_BACKUP_SEMANTICS, | |
4195 | NULL); | |
4196 | if (sh != INVALID_HANDLE_VALUE) | |
4197 | { | |
4198 | BYTE reparse_buf[MAXIMUM_REPARSE_DATA_BUFFER_SIZE]; | |
4199 | REPARSE_DATA_BUFFER *reparse_data = (REPARSE_DATA_BUFFER *)&reparse_buf[0]; | |
4200 | DWORD retbytes; | |
4201 | ||
4202 | if (!DeviceIoControl (sh, FSCTL_GET_REPARSE_POINT, NULL, 0, | |
4203 | reparse_buf, MAXIMUM_REPARSE_DATA_BUFFER_SIZE, | |
4204 | &retbytes, NULL)) | |
4205 | errno = EIO; | |
4206 | else if (reparse_data->ReparseTag != IO_REPARSE_TAG_SYMLINK) | |
4207 | errno = EINVAL; | |
4208 | else | |
4209 | { | |
4210 | /* Copy the link target name, in wide characters, fro | |
4211 | reparse_data, then convert it to multibyte encoding in | |
4212 | the current locale's codepage. */ | |
4213 | WCHAR *lwname; | |
4214 | BYTE lname[MAX_PATH]; | |
4215 | USHORT lname_len; | |
4216 | USHORT lwname_len = | |
4217 | reparse_data->SymbolicLinkReparseBuffer.PrintNameLength; | |
4218 | WCHAR *lwname_src = | |
4219 | reparse_data->SymbolicLinkReparseBuffer.PathBuffer | |
4220 | + reparse_data->SymbolicLinkReparseBuffer.PrintNameOffset/sizeof(WCHAR); | |
4221 | ||
4222 | /* According to MSDN, PrintNameLength does not include the | |
4223 | terminating null character. */ | |
4224 | lwname = alloca ((lwname_len + 1) * sizeof(WCHAR)); | |
4225 | memcpy (lwname, lwname_src, lwname_len); | |
4226 | lwname[lwname_len/sizeof(WCHAR)] = 0; /* null-terminate */ | |
4227 | ||
4228 | /* FIXME: Should we use the current file-name coding system | |
4229 | instead of the fixed value of the ANSI codepage? */ | |
4230 | lname_len = WideCharToMultiByte (w32_ansi_code_page, 0, lwname, -1, | |
4231 | lname, MAX_PATH, NULL, NULL); | |
4232 | if (!lname_len) | |
4233 | { | |
4234 | /* WideCharToMultiByte failed. */ | |
4235 | DWORD w32err1 = GetLastError (); | |
4236 | ||
4237 | switch (w32err1) | |
4238 | { | |
4239 | case ERROR_INSUFFICIENT_BUFFER: | |
4240 | errno = ENAMETOOLONG; | |
4241 | break; | |
4242 | case ERROR_INVALID_PARAMETER: | |
4243 | errno = EFAULT; | |
4244 | break; | |
4245 | case ERROR_NO_UNICODE_TRANSLATION: | |
4246 | errno = ENOENT; | |
4247 | break; | |
4248 | default: | |
4249 | errno = EINVAL; | |
4250 | break; | |
4251 | } | |
4252 | } | |
4253 | else | |
4254 | { | |
4255 | size_t size_to_copy = buf_size; | |
4256 | BYTE *p = lname; | |
4257 | BYTE *pend = p + lname_len; | |
4258 | ||
4259 | /* Normalize like dostounix_filename does, but we don't | |
4260 | want to assume that lname is null-terminated. */ | |
4261 | if (*p && p[1] == ':' && *p >= 'A' && *p <= 'Z') | |
4262 | *p += 'a' - 'A'; | |
4263 | while (p <= pend) | |
4264 | { | |
4265 | if (*p == '\\') | |
4266 | *p = '/'; | |
4267 | ++p; | |
4268 | } | |
4269 | /* Testing for null-terminated LNAME is paranoia: | |
4270 | WideCharToMultiByte should always return a | |
4271 | null-terminated string when its 4th argument is -1 | |
4272 | and its 3rd argument is null-terminated (which they | |
4273 | are, see above). */ | |
4274 | if (lname[lname_len - 1] == '\0') | |
4275 | lname_len--; | |
4276 | if (lname_len <= buf_size) | |
4277 | size_to_copy = lname_len; | |
4278 | strncpy (buf, lname, size_to_copy); | |
4279 | /* Success! */ | |
4280 | retval = size_to_copy; | |
4281 | } | |
4282 | } | |
4283 | CloseHandle (sh); | |
4284 | } | |
4285 | else | |
4286 | { | |
4287 | /* CreateFile failed. */ | |
4288 | DWORD w32err2 = GetLastError (); | |
4289 | ||
4290 | switch (w32err2) | |
4291 | { | |
4292 | case ERROR_FILE_NOT_FOUND: | |
4293 | case ERROR_PATH_NOT_FOUND: | |
4294 | errno = ENOENT; | |
4295 | break; | |
4296 | case ERROR_ACCESS_DENIED: | |
4297 | case ERROR_TOO_MANY_OPEN_FILES: | |
4298 | errno = EACCES; | |
4299 | break; | |
4300 | default: | |
4301 | errno = EPERM; | |
4302 | break; | |
4303 | } | |
4304 | } | |
4305 | if (restore_privs) | |
4306 | { | |
4307 | restore_privilege (&privs); | |
4308 | revert_to_self (); | |
4309 | } | |
4310 | ||
4311 | return retval; | |
0f7bb05d EZ |
4312 | } |
4313 | ||
6dad7178 EZ |
4314 | /* If FILE is a symlink, return its target (stored in a static |
4315 | buffer); otherwise return FILE. | |
4316 | ||
4317 | This function repeatedly resolves symlinks in the last component of | |
4318 | a chain of symlink file names, as in foo -> bar -> baz -> ..., | |
4319 | until it arrives at a file whose last component is not a symlink, | |
4320 | or some error occurs. It returns the target of the last | |
4321 | successfully resolved symlink in the chain. If it succeeds to | |
4322 | resolve even a single symlink, the value returned is an absolute | |
4323 | file name with backslashes (result of GetFullPathName). By | |
4324 | contrast, if the original FILE is returned, it is unaltered. | |
4325 | ||
4326 | Note: This function can set errno even if it succeeds. | |
4327 | ||
4328 | Implementation note: we only resolve the last portion ("basename") | |
4329 | of the argument FILE and of each following file in the chain, | |
4330 | disregarding any possible symlinks in its leading directories. | |
4331 | This is because Windows system calls and library functions | |
4332 | transparently resolve symlinks in leading directories and return | |
4333 | correct information, as long as the basename is not a symlink. */ | |
4334 | static char * | |
4335 | chase_symlinks (const char *file) | |
4336 | { | |
4337 | static char target[MAX_PATH]; | |
4338 | char link[MAX_PATH]; | |
4339 | ssize_t res, link_len; | |
4340 | int loop_count = 0; | |
4341 | ||
4342 | if (is_windows_9x () == TRUE || !is_symlink (file)) | |
4343 | return (char *)file; | |
4344 | ||
4345 | if ((link_len = GetFullPathName (file, MAX_PATH, link, NULL)) == 0) | |
4346 | return (char *)file; | |
4347 | ||
4348 | target[0] = '\0'; | |
4349 | do { | |
4350 | ||
4351 | /* Remove trailing slashes, as we want to resolve the last | |
4352 | non-trivial part of the link name. */ | |
4353 | while (link_len > 3 && IS_DIRECTORY_SEP (link[link_len-1])) | |
4354 | link[link_len--] = '\0'; | |
4355 | ||
4356 | res = readlink (link, target, MAX_PATH); | |
4357 | if (res > 0) | |
4358 | { | |
4359 | target[res] = '\0'; | |
4360 | if (!(IS_DEVICE_SEP (target[1]) | |
25a20a3a | 4361 | || (IS_DIRECTORY_SEP (target[0]) && IS_DIRECTORY_SEP (target[1])))) |
6dad7178 EZ |
4362 | { |
4363 | /* Target is relative. Append it to the directory part of | |
4364 | the symlink, then copy the result back to target. */ | |
4365 | char *p = link + link_len; | |
4366 | ||
4367 | while (p > link && !IS_ANY_SEP (p[-1])) | |
4368 | p--; | |
4369 | strcpy (p, target); | |
4370 | strcpy (target, link); | |
4371 | } | |
4372 | /* Resolve any "." and ".." to get a fully-qualified file name | |
4373 | in link[] again. */ | |
4374 | link_len = GetFullPathName (target, MAX_PATH, link, NULL); | |
4375 | } | |
4376 | } while (res > 0 && link_len > 0 && ++loop_count <= 100); | |
4377 | ||
4378 | if (loop_count > 100) | |
4379 | errno = ELOOP; | |
4380 | ||
4381 | if (target[0] == '\0') /* not a single call to readlink succeeded */ | |
4382 | return (char *)file; | |
4383 | return target; | |
4384 | } | |
4385 | ||
4386 | /* MS-Windows version of careadlinkat (cf. ../lib/careadlinkat.c). We | |
4387 | have a fixed max size for file names, so we don't need the kind of | |
4388 | alloc/malloc/realloc dance the gnulib version does. We also don't | |
4389 | support FD-relative symlinks. */ | |
973f782d EZ |
4390 | char * |
4391 | careadlinkat (int fd, char const *filename, | |
4392 | char *buffer, size_t buffer_size, | |
4393 | struct allocator const *alloc, | |
4394 | ssize_t (*preadlinkat) (int, char const *, char *, size_t)) | |
4395 | { | |
6dad7178 EZ |
4396 | char linkname[MAX_PATH]; |
4397 | ssize_t link_size; | |
4398 | ||
4399 | if (fd != AT_FDCWD) | |
4400 | { | |
4401 | errno = EINVAL; | |
4402 | return NULL; | |
4403 | } | |
4404 | ||
4405 | link_size = preadlinkat (fd, filename, linkname, sizeof(linkname)); | |
4406 | ||
4407 | if (link_size > 0) | |
4408 | { | |
4409 | char *retval = buffer; | |
4410 | ||
4411 | linkname[link_size++] = '\0'; | |
4412 | if (link_size > buffer_size) | |
4413 | retval = (char *)(alloc ? alloc->allocate : xmalloc) (link_size); | |
4414 | if (retval) | |
4415 | memcpy (retval, linkname, link_size); | |
4416 | ||
4417 | return retval; | |
4418 | } | |
973f782d EZ |
4419 | return NULL; |
4420 | } | |
4421 | ||
4422 | ssize_t | |
4423 | careadlinkatcwd (int fd, char const *filename, char *buffer, | |
4424 | size_t buffer_size) | |
4425 | { | |
4426 | (void) fd; | |
4427 | return readlink (filename, buffer, buffer_size); | |
4428 | } | |
4429 | ||
0f7bb05d | 4430 | \f |
7c80d5ec EZ |
4431 | /* Support for browsing other processes and their attributes. See |
4432 | process.c for the Lisp bindings. */ | |
4433 | ||
4434 | /* Helper wrapper functions. */ | |
4435 | ||
bedf4aab JB |
4436 | static HANDLE WINAPI |
4437 | create_toolhelp32_snapshot (DWORD Flags, DWORD Ignored) | |
7c80d5ec EZ |
4438 | { |
4439 | static CreateToolhelp32Snapshot_Proc s_pfn_Create_Toolhelp32_Snapshot = NULL; | |
4440 | ||
4441 | if (g_b_init_create_toolhelp32_snapshot == 0) | |
4442 | { | |
4443 | g_b_init_create_toolhelp32_snapshot = 1; | |
4444 | s_pfn_Create_Toolhelp32_Snapshot = (CreateToolhelp32Snapshot_Proc) | |
4445 | GetProcAddress (GetModuleHandle ("kernel32.dll"), | |
4446 | "CreateToolhelp32Snapshot"); | |
4447 | } | |
4448 | if (s_pfn_Create_Toolhelp32_Snapshot == NULL) | |
4449 | { | |
4450 | return INVALID_HANDLE_VALUE; | |
4451 | } | |
4452 | return (s_pfn_Create_Toolhelp32_Snapshot (Flags, Ignored)); | |
4453 | } | |
4454 | ||
bedf4aab JB |
4455 | static BOOL WINAPI |
4456 | process32_first (HANDLE hSnapshot, LPPROCESSENTRY32 lppe) | |
7c80d5ec EZ |
4457 | { |
4458 | static Process32First_Proc s_pfn_Process32_First = NULL; | |
4459 | ||
4460 | if (g_b_init_process32_first == 0) | |
4461 | { | |
4462 | g_b_init_process32_first = 1; | |
4463 | s_pfn_Process32_First = (Process32First_Proc) | |
4464 | GetProcAddress (GetModuleHandle ("kernel32.dll"), | |
4465 | "Process32First"); | |
4466 | } | |
4467 | if (s_pfn_Process32_First == NULL) | |
4468 | { | |
4469 | return FALSE; | |
4470 | } | |
4471 | return (s_pfn_Process32_First (hSnapshot, lppe)); | |
4472 | } | |
4473 | ||
bedf4aab JB |
4474 | static BOOL WINAPI |
4475 | process32_next (HANDLE hSnapshot, LPPROCESSENTRY32 lppe) | |
7c80d5ec EZ |
4476 | { |
4477 | static Process32Next_Proc s_pfn_Process32_Next = NULL; | |
4478 | ||
4479 | if (g_b_init_process32_next == 0) | |
4480 | { | |
4481 | g_b_init_process32_next = 1; | |
4482 | s_pfn_Process32_Next = (Process32Next_Proc) | |
4483 | GetProcAddress (GetModuleHandle ("kernel32.dll"), | |
4484 | "Process32Next"); | |
4485 | } | |
4486 | if (s_pfn_Process32_Next == NULL) | |
4487 | { | |
4488 | return FALSE; | |
4489 | } | |
4490 | return (s_pfn_Process32_Next (hSnapshot, lppe)); | |
4491 | } | |
4492 | ||
bedf4aab JB |
4493 | static BOOL WINAPI |
4494 | open_thread_token (HANDLE ThreadHandle, | |
4495 | DWORD DesiredAccess, | |
4496 | BOOL OpenAsSelf, | |
4497 | PHANDLE TokenHandle) | |
7c80d5ec EZ |
4498 | { |
4499 | static OpenThreadToken_Proc s_pfn_Open_Thread_Token = NULL; | |
4500 | HMODULE hm_advapi32 = NULL; | |
4501 | if (is_windows_9x () == TRUE) | |
4502 | { | |
4503 | SetLastError (ERROR_NOT_SUPPORTED); | |
4504 | return FALSE; | |
4505 | } | |
4506 | if (g_b_init_open_thread_token == 0) | |
4507 | { | |
4508 | g_b_init_open_thread_token = 1; | |
4509 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
4510 | s_pfn_Open_Thread_Token = | |
4511 | (OpenThreadToken_Proc) GetProcAddress (hm_advapi32, "OpenThreadToken"); | |
4512 | } | |
4513 | if (s_pfn_Open_Thread_Token == NULL) | |
4514 | { | |
4515 | SetLastError (ERROR_NOT_SUPPORTED); | |
4516 | return FALSE; | |
4517 | } | |
4518 | return ( | |
4519 | s_pfn_Open_Thread_Token ( | |
4520 | ThreadHandle, | |
4521 | DesiredAccess, | |
4522 | OpenAsSelf, | |
4523 | TokenHandle) | |
4524 | ); | |
4525 | } | |
4526 | ||
bedf4aab JB |
4527 | static BOOL WINAPI |
4528 | impersonate_self (SECURITY_IMPERSONATION_LEVEL ImpersonationLevel) | |
7c80d5ec EZ |
4529 | { |
4530 | static ImpersonateSelf_Proc s_pfn_Impersonate_Self = NULL; | |
4531 | HMODULE hm_advapi32 = NULL; | |
4532 | if (is_windows_9x () == TRUE) | |
4533 | { | |
4534 | return FALSE; | |
4535 | } | |
4536 | if (g_b_init_impersonate_self == 0) | |
4537 | { | |
4538 | g_b_init_impersonate_self = 1; | |
4539 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
4540 | s_pfn_Impersonate_Self = | |
4541 | (ImpersonateSelf_Proc) GetProcAddress (hm_advapi32, "ImpersonateSelf"); | |
4542 | } | |
4543 | if (s_pfn_Impersonate_Self == NULL) | |
4544 | { | |
4545 | return FALSE; | |
4546 | } | |
4547 | return s_pfn_Impersonate_Self (ImpersonationLevel); | |
4548 | } | |
4549 | ||
bedf4aab JB |
4550 | static BOOL WINAPI |
4551 | revert_to_self (void) | |
7c80d5ec EZ |
4552 | { |
4553 | static RevertToSelf_Proc s_pfn_Revert_To_Self = NULL; | |
4554 | HMODULE hm_advapi32 = NULL; | |
4555 | if (is_windows_9x () == TRUE) | |
4556 | { | |
4557 | return FALSE; | |
4558 | } | |
4559 | if (g_b_init_revert_to_self == 0) | |
4560 | { | |
4561 | g_b_init_revert_to_self = 1; | |
4562 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
4563 | s_pfn_Revert_To_Self = | |
4564 | (RevertToSelf_Proc) GetProcAddress (hm_advapi32, "RevertToSelf"); | |
4565 | } | |
4566 | if (s_pfn_Revert_To_Self == NULL) | |
4567 | { | |
4568 | return FALSE; | |
4569 | } | |
4570 | return s_pfn_Revert_To_Self (); | |
4571 | } | |
4572 | ||
bedf4aab JB |
4573 | static BOOL WINAPI |
4574 | get_process_memory_info (HANDLE h_proc, | |
4575 | PPROCESS_MEMORY_COUNTERS mem_counters, | |
4576 | DWORD bufsize) | |
7c80d5ec EZ |
4577 | { |
4578 | static GetProcessMemoryInfo_Proc s_pfn_Get_Process_Memory_Info = NULL; | |
4579 | HMODULE hm_psapi = NULL; | |
4580 | if (is_windows_9x () == TRUE) | |
4581 | { | |
4582 | return FALSE; | |
4583 | } | |
4584 | if (g_b_init_get_process_memory_info == 0) | |
4585 | { | |
4586 | g_b_init_get_process_memory_info = 1; | |
4587 | hm_psapi = LoadLibrary ("Psapi.dll"); | |
4588 | if (hm_psapi) | |
4589 | s_pfn_Get_Process_Memory_Info = (GetProcessMemoryInfo_Proc) | |
4590 | GetProcAddress (hm_psapi, "GetProcessMemoryInfo"); | |
4591 | } | |
4592 | if (s_pfn_Get_Process_Memory_Info == NULL) | |
4593 | { | |
4594 | return FALSE; | |
4595 | } | |
4596 | return s_pfn_Get_Process_Memory_Info (h_proc, mem_counters, bufsize); | |
4597 | } | |
4598 | ||
bedf4aab JB |
4599 | static BOOL WINAPI |
4600 | get_process_working_set_size (HANDLE h_proc, | |
4601 | DWORD *minrss, | |
4602 | DWORD *maxrss) | |
7c80d5ec EZ |
4603 | { |
4604 | static GetProcessWorkingSetSize_Proc | |
4605 | s_pfn_Get_Process_Working_Set_Size = NULL; | |
4606 | ||
4607 | if (is_windows_9x () == TRUE) | |
4608 | { | |
4609 | return FALSE; | |
4610 | } | |
4611 | if (g_b_init_get_process_working_set_size == 0) | |
4612 | { | |
4613 | g_b_init_get_process_working_set_size = 1; | |
4614 | s_pfn_Get_Process_Working_Set_Size = (GetProcessWorkingSetSize_Proc) | |
4615 | GetProcAddress (GetModuleHandle ("kernel32.dll"), | |
4616 | "GetProcessWorkingSetSize"); | |
4617 | } | |
4618 | if (s_pfn_Get_Process_Working_Set_Size == NULL) | |
4619 | { | |
4620 | return FALSE; | |
4621 | } | |
4622 | return s_pfn_Get_Process_Working_Set_Size (h_proc, minrss, maxrss); | |
4623 | } | |
4624 | ||
bedf4aab JB |
4625 | static BOOL WINAPI |
4626 | global_memory_status (MEMORYSTATUS *buf) | |
7c80d5ec EZ |
4627 | { |
4628 | static GlobalMemoryStatus_Proc s_pfn_Global_Memory_Status = NULL; | |
4629 | ||
4630 | if (is_windows_9x () == TRUE) | |
4631 | { | |
4632 | return FALSE; | |
4633 | } | |
4634 | if (g_b_init_global_memory_status == 0) | |
4635 | { | |
4636 | g_b_init_global_memory_status = 1; | |
4637 | s_pfn_Global_Memory_Status = (GlobalMemoryStatus_Proc) | |
4638 | GetProcAddress (GetModuleHandle ("kernel32.dll"), | |
4639 | "GlobalMemoryStatus"); | |
4640 | } | |
4641 | if (s_pfn_Global_Memory_Status == NULL) | |
4642 | { | |
4643 | return FALSE; | |
4644 | } | |
4645 | return s_pfn_Global_Memory_Status (buf); | |
4646 | } | |
4647 | ||
bedf4aab JB |
4648 | static BOOL WINAPI |
4649 | global_memory_status_ex (MEMORY_STATUS_EX *buf) | |
7c80d5ec EZ |
4650 | { |
4651 | static GlobalMemoryStatusEx_Proc s_pfn_Global_Memory_Status_Ex = NULL; | |
4652 | ||
4653 | if (is_windows_9x () == TRUE) | |
4654 | { | |
4655 | return FALSE; | |
4656 | } | |
4657 | if (g_b_init_global_memory_status_ex == 0) | |
4658 | { | |
4659 | g_b_init_global_memory_status_ex = 1; | |
4660 | s_pfn_Global_Memory_Status_Ex = (GlobalMemoryStatusEx_Proc) | |
4661 | GetProcAddress (GetModuleHandle ("kernel32.dll"), | |
4662 | "GlobalMemoryStatusEx"); | |
4663 | } | |
4664 | if (s_pfn_Global_Memory_Status_Ex == NULL) | |
4665 | { | |
4666 | return FALSE; | |
4667 | } | |
4668 | return s_pfn_Global_Memory_Status_Ex (buf); | |
4669 | } | |
4670 | ||
4671 | Lisp_Object | |
b56ceb92 | 4672 | list_system_processes (void) |
7c80d5ec EZ |
4673 | { |
4674 | struct gcpro gcpro1; | |
4675 | Lisp_Object proclist = Qnil; | |
4676 | HANDLE h_snapshot; | |
4677 | ||
4678 | h_snapshot = create_toolhelp32_snapshot (TH32CS_SNAPPROCESS, 0); | |
4679 | ||
4680 | if (h_snapshot != INVALID_HANDLE_VALUE) | |
4681 | { | |
4682 | PROCESSENTRY32 proc_entry; | |
4683 | DWORD proc_id; | |
4684 | BOOL res; | |
4685 | ||
4686 | GCPRO1 (proclist); | |
4687 | ||
4688 | proc_entry.dwSize = sizeof (PROCESSENTRY32); | |
4689 | for (res = process32_first (h_snapshot, &proc_entry); res; | |
4690 | res = process32_next (h_snapshot, &proc_entry)) | |
4691 | { | |
4692 | proc_id = proc_entry.th32ProcessID; | |
4693 | proclist = Fcons (make_fixnum_or_float (proc_id), proclist); | |
4694 | } | |
4695 | ||
4696 | CloseHandle (h_snapshot); | |
4697 | UNGCPRO; | |
4698 | proclist = Fnreverse (proclist); | |
4699 | } | |
4700 | ||
4701 | return proclist; | |
4702 | } | |
4703 | ||
4704 | static int | |
4705 | enable_privilege (LPCTSTR priv_name, BOOL enable_p, TOKEN_PRIVILEGES *old_priv) | |
4706 | { | |
4707 | TOKEN_PRIVILEGES priv; | |
4708 | DWORD priv_size = sizeof (priv); | |
4709 | DWORD opriv_size = sizeof (*old_priv); | |
4710 | HANDLE h_token = NULL; | |
4711 | HANDLE h_thread = GetCurrentThread (); | |
4712 | int ret_val = 0; | |
4713 | BOOL res; | |
4714 | ||
4715 | res = open_thread_token (h_thread, | |
4716 | TOKEN_QUERY | TOKEN_ADJUST_PRIVILEGES, | |
4717 | FALSE, &h_token); | |
4718 | if (!res && GetLastError () == ERROR_NO_TOKEN) | |
4719 | { | |
4720 | if (impersonate_self (SecurityImpersonation)) | |
4721 | res = open_thread_token (h_thread, | |
4722 | TOKEN_QUERY | TOKEN_ADJUST_PRIVILEGES, | |
4723 | FALSE, &h_token); | |
4724 | } | |
4725 | if (res) | |
4726 | { | |
4727 | priv.PrivilegeCount = 1; | |
4728 | priv.Privileges[0].Attributes = enable_p ? SE_PRIVILEGE_ENABLED : 0; | |
4729 | LookupPrivilegeValue (NULL, priv_name, &priv.Privileges[0].Luid); | |
4730 | if (AdjustTokenPrivileges (h_token, FALSE, &priv, priv_size, | |
4731 | old_priv, &opriv_size) | |
4732 | && GetLastError () != ERROR_NOT_ALL_ASSIGNED) | |
4733 | ret_val = 1; | |
4734 | } | |
4735 | if (h_token) | |
4736 | CloseHandle (h_token); | |
4737 | ||
4738 | return ret_val; | |
4739 | } | |
4740 | ||
4741 | static int | |
4742 | restore_privilege (TOKEN_PRIVILEGES *priv) | |
4743 | { | |
4744 | DWORD priv_size = sizeof (*priv); | |
4745 | HANDLE h_token = NULL; | |
4746 | int ret_val = 0; | |
4747 | ||
4748 | if (open_thread_token (GetCurrentThread (), | |
4749 | TOKEN_QUERY | TOKEN_ADJUST_PRIVILEGES, | |
4750 | FALSE, &h_token)) | |
4751 | { | |
4752 | if (AdjustTokenPrivileges (h_token, FALSE, priv, priv_size, NULL, NULL) | |
4753 | && GetLastError () != ERROR_NOT_ALL_ASSIGNED) | |
4754 | ret_val = 1; | |
4755 | } | |
4756 | if (h_token) | |
4757 | CloseHandle (h_token); | |
4758 | ||
4759 | return ret_val; | |
4760 | } | |
4761 | ||
ca300656 | 4762 | static Lisp_Object |
d35af63c | 4763 | ltime (ULONGLONG time_100ns) |
7c80d5ec | 4764 | { |
d35af63c PE |
4765 | ULONGLONG time_sec = time_100ns / 10000000; |
4766 | int subsec = time_100ns % 10000000; | |
4767 | return list4 (make_number (time_sec >> 16), | |
7c80d5ec | 4768 | make_number (time_sec & 0xffff), |
d35af63c PE |
4769 | make_number (subsec / 10), |
4770 | make_number (subsec % 10 * 100000)); | |
7c80d5ec EZ |
4771 | } |
4772 | ||
d35af63c | 4773 | #define U64_TO_LISP_TIME(time) ltime (time) |
5da9424d | 4774 | |
7c80d5ec | 4775 | static int |
b56ceb92 JB |
4776 | process_times (HANDLE h_proc, Lisp_Object *ctime, Lisp_Object *etime, |
4777 | Lisp_Object *stime, Lisp_Object *utime, Lisp_Object *ttime, | |
4778 | double *pcpu) | |
7c80d5ec EZ |
4779 | { |
4780 | FILETIME ft_creation, ft_exit, ft_kernel, ft_user, ft_current; | |
5da9424d | 4781 | ULONGLONG tem1, tem2, tem3, tem; |
7c80d5ec EZ |
4782 | |
4783 | if (!h_proc | |
4784 | || !get_process_times_fn | |
ed3751c8 JB |
4785 | || !(*get_process_times_fn) (h_proc, &ft_creation, &ft_exit, |
4786 | &ft_kernel, &ft_user)) | |
7c80d5ec EZ |
4787 | return 0; |
4788 | ||
4789 | GetSystemTimeAsFileTime (&ft_current); | |
4790 | ||
5da9424d | 4791 | FILETIME_TO_U64 (tem1, ft_kernel); |
5da9424d JB |
4792 | *stime = U64_TO_LISP_TIME (tem1); |
4793 | ||
4794 | FILETIME_TO_U64 (tem2, ft_user); | |
5da9424d JB |
4795 | *utime = U64_TO_LISP_TIME (tem2); |
4796 | ||
4797 | tem3 = tem1 + tem2; | |
4798 | *ttime = U64_TO_LISP_TIME (tem3); | |
4799 | ||
4800 | FILETIME_TO_U64 (tem, ft_creation); | |
3af03101 EZ |
4801 | /* Process no 4 (System) returns zero creation time. */ |
4802 | if (tem) | |
d35af63c | 4803 | tem -= utc_base; |
5da9424d JB |
4804 | *ctime = U64_TO_LISP_TIME (tem); |
4805 | ||
3af03101 | 4806 | if (tem) |
5da9424d JB |
4807 | { |
4808 | FILETIME_TO_U64 (tem3, ft_current); | |
d35af63c | 4809 | tem = (tem3 - utc_base) - tem; |
5da9424d JB |
4810 | } |
4811 | *etime = U64_TO_LISP_TIME (tem); | |
7c80d5ec | 4812 | |
3af03101 EZ |
4813 | if (tem) |
4814 | { | |
4815 | *pcpu = 100.0 * (tem1 + tem2) / tem; | |
4816 | if (*pcpu > 100) | |
4817 | *pcpu = 100.0; | |
4818 | } | |
4819 | else | |
4820 | *pcpu = 0; | |
4821 | ||
4822 | return 1; | |
7c80d5ec EZ |
4823 | } |
4824 | ||
4825 | Lisp_Object | |
b56ceb92 | 4826 | system_process_attributes (Lisp_Object pid) |
7c80d5ec EZ |
4827 | { |
4828 | struct gcpro gcpro1, gcpro2, gcpro3; | |
4829 | Lisp_Object attrs = Qnil; | |
4830 | Lisp_Object cmd_str, decoded_cmd, tem; | |
4831 | HANDLE h_snapshot, h_proc; | |
4832 | DWORD proc_id; | |
754a2d13 | 4833 | int found_proc = 0; |
7c80d5ec | 4834 | char uname[UNLEN+1], gname[GNLEN+1], domain[1025]; |
32cef06e | 4835 | DWORD ulength = sizeof (uname), dlength = sizeof (domain), needed; |
7c80d5ec EZ |
4836 | DWORD glength = sizeof (gname); |
4837 | HANDLE token = NULL; | |
4838 | SID_NAME_USE user_type; | |
32cef06e EZ |
4839 | unsigned char *buf = NULL; |
4840 | DWORD blen = 0; | |
7c80d5ec EZ |
4841 | TOKEN_USER user_token; |
4842 | TOKEN_PRIMARY_GROUP group_token; | |
22749e9a EZ |
4843 | unsigned euid; |
4844 | unsigned egid; | |
7c80d5ec EZ |
4845 | PROCESS_MEMORY_COUNTERS mem; |
4846 | PROCESS_MEMORY_COUNTERS_EX mem_ex; | |
4847 | DWORD minrss, maxrss; | |
4848 | MEMORYSTATUS memst; | |
b8526f6e | 4849 | MEMORY_STATUS_EX memstex; |
7c80d5ec | 4850 | double totphys = 0.0; |
031da700 | 4851 | Lisp_Object ctime, stime, utime, etime, ttime; |
7c80d5ec | 4852 | double pcpu; |
32cef06e | 4853 | BOOL result = FALSE; |
7c80d5ec EZ |
4854 | |
4855 | CHECK_NUMBER_OR_FLOAT (pid); | |
4856 | proc_id = FLOATP (pid) ? XFLOAT_DATA (pid) : XINT (pid); | |
4857 | ||
4858 | h_snapshot = create_toolhelp32_snapshot (TH32CS_SNAPPROCESS, 0); | |
4859 | ||
4860 | GCPRO3 (attrs, decoded_cmd, tem); | |
4861 | ||
4862 | if (h_snapshot != INVALID_HANDLE_VALUE) | |
4863 | { | |
4864 | PROCESSENTRY32 pe; | |
4865 | BOOL res; | |
4866 | ||
4867 | pe.dwSize = sizeof (PROCESSENTRY32); | |
4868 | for (res = process32_first (h_snapshot, &pe); res; | |
4869 | res = process32_next (h_snapshot, &pe)) | |
4870 | { | |
4871 | if (proc_id == pe.th32ProcessID) | |
4872 | { | |
4873 | if (proc_id == 0) | |
4874 | decoded_cmd = build_string ("Idle"); | |
4875 | else | |
4876 | { | |
4877 | /* Decode the command name from locale-specific | |
4878 | encoding. */ | |
4879 | cmd_str = make_unibyte_string (pe.szExeFile, | |
4880 | strlen (pe.szExeFile)); | |
4881 | decoded_cmd = | |
4882 | code_convert_string_norecord (cmd_str, | |
4883 | Vlocale_coding_system, 0); | |
4884 | } | |
4885 | attrs = Fcons (Fcons (Qcomm, decoded_cmd), attrs); | |
4886 | attrs = Fcons (Fcons (Qppid, | |
4887 | make_fixnum_or_float (pe.th32ParentProcessID)), | |
4888 | attrs); | |
4889 | attrs = Fcons (Fcons (Qpri, make_number (pe.pcPriClassBase)), | |
4890 | attrs); | |
4891 | attrs = Fcons (Fcons (Qthcount, | |
4892 | make_fixnum_or_float (pe.cntThreads)), | |
4893 | attrs); | |
754a2d13 | 4894 | found_proc = 1; |
7c80d5ec EZ |
4895 | break; |
4896 | } | |
4897 | } | |
4898 | ||
4899 | CloseHandle (h_snapshot); | |
4900 | } | |
4901 | ||
754a2d13 EZ |
4902 | if (!found_proc) |
4903 | { | |
4904 | UNGCPRO; | |
4905 | return Qnil; | |
4906 | } | |
4907 | ||
7c80d5ec EZ |
4908 | h_proc = OpenProcess (PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, |
4909 | FALSE, proc_id); | |
4910 | /* If we were denied a handle to the process, try again after | |
4911 | enabling the SeDebugPrivilege in our process. */ | |
4912 | if (!h_proc) | |
4913 | { | |
4914 | TOKEN_PRIVILEGES priv_current; | |
4915 | ||
4916 | if (enable_privilege (SE_DEBUG_NAME, TRUE, &priv_current)) | |
4917 | { | |
4918 | h_proc = OpenProcess (PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, | |
4919 | FALSE, proc_id); | |
4920 | restore_privilege (&priv_current); | |
4921 | revert_to_self (); | |
4922 | } | |
4923 | } | |
32cef06e | 4924 | if (h_proc) |
7c80d5ec | 4925 | { |
32cef06e EZ |
4926 | result = open_process_token (h_proc, TOKEN_QUERY, &token); |
4927 | if (result) | |
f8b35b24 | 4928 | { |
32cef06e EZ |
4929 | result = get_token_information (token, TokenUser, NULL, 0, &blen); |
4930 | if (!result && GetLastError () == ERROR_INSUFFICIENT_BUFFER) | |
4931 | { | |
4932 | buf = xmalloc (blen); | |
4933 | result = get_token_information (token, TokenUser, | |
4934 | (LPVOID)buf, blen, &needed); | |
4935 | if (result) | |
4936 | { | |
4937 | memcpy (&user_token, buf, sizeof (user_token)); | |
4938 | if (!w32_cached_id (user_token.User.Sid, &euid, uname)) | |
4939 | { | |
4940 | euid = get_rid (user_token.User.Sid); | |
4941 | result = lookup_account_sid (NULL, user_token.User.Sid, | |
4942 | uname, &ulength, | |
4943 | domain, &dlength, | |
4944 | &user_type); | |
4945 | if (result) | |
4946 | w32_add_to_cache (user_token.User.Sid, euid, uname); | |
4947 | else | |
4948 | { | |
4949 | strcpy (uname, "unknown"); | |
4950 | result = TRUE; | |
4951 | } | |
4952 | } | |
4953 | ulength = strlen (uname); | |
4954 | } | |
4955 | } | |
7c80d5ec | 4956 | } |
32cef06e | 4957 | if (result) |
7c80d5ec | 4958 | { |
32cef06e EZ |
4959 | /* Determine a reasonable euid and gid values. */ |
4960 | if (xstrcasecmp ("administrator", uname) == 0) | |
7c80d5ec | 4961 | { |
32cef06e EZ |
4962 | euid = 500; /* well-known Administrator uid */ |
4963 | egid = 513; /* well-known None gid */ | |
4964 | } | |
4965 | else | |
4966 | { | |
4967 | /* Get group id and name. */ | |
4968 | result = get_token_information (token, TokenPrimaryGroup, | |
4969 | (LPVOID)buf, blen, &needed); | |
4970 | if (!result && GetLastError () == ERROR_INSUFFICIENT_BUFFER) | |
f8b35b24 | 4971 | { |
32cef06e EZ |
4972 | buf = xrealloc (buf, blen = needed); |
4973 | result = get_token_information (token, TokenPrimaryGroup, | |
4974 | (LPVOID)buf, blen, &needed); | |
4975 | } | |
4976 | if (result) | |
4977 | { | |
4978 | memcpy (&group_token, buf, sizeof (group_token)); | |
4979 | if (!w32_cached_id (group_token.PrimaryGroup, &egid, gname)) | |
4980 | { | |
4981 | egid = get_rid (group_token.PrimaryGroup); | |
4982 | dlength = sizeof (domain); | |
4983 | result = | |
4984 | lookup_account_sid (NULL, group_token.PrimaryGroup, | |
4985 | gname, &glength, NULL, &dlength, | |
4986 | &user_type); | |
4987 | if (result) | |
4988 | w32_add_to_cache (group_token.PrimaryGroup, | |
4989 | egid, gname); | |
4990 | else | |
4991 | { | |
4992 | strcpy (gname, "None"); | |
4993 | result = TRUE; | |
4994 | } | |
4995 | } | |
4996 | glength = strlen (gname); | |
f8b35b24 | 4997 | } |
7c80d5ec | 4998 | } |
7c80d5ec | 4999 | } |
5f445726 | 5000 | xfree (buf); |
7c80d5ec | 5001 | } |
32cef06e | 5002 | if (!result) |
7c80d5ec | 5003 | { |
32cef06e EZ |
5004 | if (!is_windows_9x ()) |
5005 | { | |
5006 | /* We couldn't open the process token, presumably because of | |
5007 | insufficient access rights. Assume this process is run | |
5008 | by the system. */ | |
5009 | strcpy (uname, "SYSTEM"); | |
5010 | strcpy (gname, "None"); | |
5011 | euid = 18; /* SYSTEM */ | |
5012 | egid = 513; /* None */ | |
5013 | glength = strlen (gname); | |
5014 | ulength = strlen (uname); | |
5015 | } | |
5016 | /* If we are running under Windows 9X, where security calls are | |
5017 | not supported, we assume all processes are run by the current | |
5018 | user. */ | |
5019 | else if (GetUserName (uname, &ulength)) | |
5020 | { | |
5021 | if (xstrcasecmp ("administrator", uname) == 0) | |
5022 | euid = 0; | |
5023 | else | |
5024 | euid = 123; | |
5025 | egid = euid; | |
5026 | strcpy (gname, "None"); | |
5027 | glength = strlen (gname); | |
5028 | ulength = strlen (uname); | |
5029 | } | |
7c80d5ec | 5030 | else |
32cef06e EZ |
5031 | { |
5032 | euid = 123; | |
5033 | egid = 123; | |
5034 | strcpy (uname, "administrator"); | |
5035 | ulength = strlen (uname); | |
5036 | strcpy (gname, "None"); | |
5037 | glength = strlen (gname); | |
5038 | } | |
5039 | if (token) | |
5040 | CloseHandle (token); | |
7c80d5ec | 5041 | } |
7c80d5ec EZ |
5042 | |
5043 | attrs = Fcons (Fcons (Qeuid, make_fixnum_or_float (euid)), attrs); | |
5044 | tem = make_unibyte_string (uname, ulength); | |
5045 | attrs = Fcons (Fcons (Quser, | |
5046 | code_convert_string_norecord (tem, Vlocale_coding_system, 0)), | |
5047 | attrs); | |
5048 | attrs = Fcons (Fcons (Qegid, make_fixnum_or_float (egid)), attrs); | |
5049 | tem = make_unibyte_string (gname, glength); | |
5050 | attrs = Fcons (Fcons (Qgroup, | |
5051 | code_convert_string_norecord (tem, Vlocale_coding_system, 0)), | |
5052 | attrs); | |
5053 | ||
5054 | if (global_memory_status_ex (&memstex)) | |
235661f6 | 5055 | #if __GNUC__ || (defined (_MSC_VER) && _MSC_VER >= 1300) |
7c80d5ec | 5056 | totphys = memstex.ullTotalPhys / 1024.0; |
235661f6 EZ |
5057 | #else |
5058 | /* Visual Studio 6 cannot convert an unsigned __int64 type to | |
5059 | double, so we need to do this for it... */ | |
5060 | { | |
5061 | DWORD tot_hi = memstex.ullTotalPhys >> 32; | |
5062 | DWORD tot_md = (memstex.ullTotalPhys & 0x00000000ffffffff) >> 10; | |
5063 | DWORD tot_lo = memstex.ullTotalPhys % 1024; | |
5064 | ||
5065 | totphys = tot_hi * 4194304.0 + tot_md + tot_lo / 1024.0; | |
5066 | } | |
5067 | #endif /* __GNUC__ || _MSC_VER >= 1300 */ | |
7c80d5ec EZ |
5068 | else if (global_memory_status (&memst)) |
5069 | totphys = memst.dwTotalPhys / 1024.0; | |
5070 | ||
5071 | if (h_proc | |
5072 | && get_process_memory_info (h_proc, (PROCESS_MEMORY_COUNTERS *)&mem_ex, | |
5073 | sizeof (mem_ex))) | |
5074 | { | |
5075 | DWORD rss = mem_ex.WorkingSetSize / 1024; | |
5076 | ||
5077 | attrs = Fcons (Fcons (Qmajflt, | |
5078 | make_fixnum_or_float (mem_ex.PageFaultCount)), | |
5079 | attrs); | |
5080 | attrs = Fcons (Fcons (Qvsize, | |
5081 | make_fixnum_or_float (mem_ex.PrivateUsage / 1024)), | |
5082 | attrs); | |
5083 | attrs = Fcons (Fcons (Qrss, make_fixnum_or_float (rss)), attrs); | |
5084 | if (totphys) | |
5085 | attrs = Fcons (Fcons (Qpmem, make_float (100. * rss / totphys)), attrs); | |
5086 | } | |
5087 | else if (h_proc | |
5088 | && get_process_memory_info (h_proc, &mem, sizeof (mem))) | |
5089 | { | |
5090 | DWORD rss = mem_ex.WorkingSetSize / 1024; | |
5091 | ||
5092 | attrs = Fcons (Fcons (Qmajflt, | |
5093 | make_fixnum_or_float (mem.PageFaultCount)), | |
5094 | attrs); | |
5095 | attrs = Fcons (Fcons (Qrss, make_fixnum_or_float (rss)), attrs); | |
5096 | if (totphys) | |
5097 | attrs = Fcons (Fcons (Qpmem, make_float (100. * rss / totphys)), attrs); | |
5098 | } | |
5099 | else if (h_proc | |
5100 | && get_process_working_set_size (h_proc, &minrss, &maxrss)) | |
5101 | { | |
5102 | DWORD rss = maxrss / 1024; | |
5103 | ||
5104 | attrs = Fcons (Fcons (Qrss, make_fixnum_or_float (maxrss / 1024)), attrs); | |
5105 | if (totphys) | |
5106 | attrs = Fcons (Fcons (Qpmem, make_float (100. * rss / totphys)), attrs); | |
5107 | } | |
5108 | ||
031da700 | 5109 | if (process_times (h_proc, &ctime, &etime, &stime, &utime, &ttime, &pcpu)) |
7c80d5ec EZ |
5110 | { |
5111 | attrs = Fcons (Fcons (Qutime, utime), attrs); | |
5112 | attrs = Fcons (Fcons (Qstime, stime), attrs); | |
031da700 | 5113 | attrs = Fcons (Fcons (Qtime, ttime), attrs); |
7c80d5ec EZ |
5114 | attrs = Fcons (Fcons (Qstart, ctime), attrs); |
5115 | attrs = Fcons (Fcons (Qetime, etime), attrs); | |
5116 | attrs = Fcons (Fcons (Qpcpu, make_float (pcpu)), attrs); | |
5117 | } | |
5118 | ||
5119 | /* FIXME: Retrieve command line by walking the PEB of the process. */ | |
5120 | ||
5121 | if (h_proc) | |
5122 | CloseHandle (h_proc); | |
5123 | UNGCPRO; | |
5124 | return attrs; | |
5125 | } | |
5126 | ||
5127 | \f | |
480b0c5b GV |
5128 | /* Wrappers for winsock functions to map between our file descriptors |
5129 | and winsock's handles; also set h_errno for convenience. | |
5130 | ||
5131 | To allow Emacs to run on systems which don't have winsock support | |
5132 | installed, we dynamically link to winsock on startup if present, and | |
5133 | otherwise provide the minimum necessary functionality | |
5134 | (eg. gethostname). */ | |
5135 | ||
5136 | /* function pointers for relevant socket functions */ | |
5137 | int (PASCAL *pfn_WSAStartup) (WORD wVersionRequired, LPWSADATA lpWSAData); | |
5138 | void (PASCAL *pfn_WSASetLastError) (int iError); | |
5139 | int (PASCAL *pfn_WSAGetLastError) (void); | |
26fb7bc4 | 5140 | int (PASCAL *pfn_WSAEventSelect) (SOCKET s, HANDLE hEventObject, long lNetworkEvents); |
64570b36 KS |
5141 | HANDLE (PASCAL *pfn_WSACreateEvent) (void); |
5142 | int (PASCAL *pfn_WSACloseEvent) (HANDLE hEvent); | |
480b0c5b GV |
5143 | int (PASCAL *pfn_socket) (int af, int type, int protocol); |
5144 | int (PASCAL *pfn_bind) (SOCKET s, const struct sockaddr *addr, int namelen); | |
5145 | int (PASCAL *pfn_connect) (SOCKET s, const struct sockaddr *addr, int namelen); | |
5146 | int (PASCAL *pfn_ioctlsocket) (SOCKET s, long cmd, u_long *argp); | |
5147 | int (PASCAL *pfn_recv) (SOCKET s, char * buf, int len, int flags); | |
5148 | int (PASCAL *pfn_send) (SOCKET s, const char * buf, int len, int flags); | |
5149 | int (PASCAL *pfn_closesocket) (SOCKET s); | |
5150 | int (PASCAL *pfn_shutdown) (SOCKET s, int how); | |
5151 | int (PASCAL *pfn_WSACleanup) (void); | |
5152 | ||
5153 | u_short (PASCAL *pfn_htons) (u_short hostshort); | |
5154 | u_short (PASCAL *pfn_ntohs) (u_short netshort); | |
5155 | unsigned long (PASCAL *pfn_inet_addr) (const char * cp); | |
5156 | int (PASCAL *pfn_gethostname) (char * name, int namelen); | |
5157 | struct hostent * (PASCAL *pfn_gethostbyname) (const char * name); | |
5158 | struct servent * (PASCAL *pfn_getservbyname) (const char * name, const char * proto); | |
ecd270eb | 5159 | int (PASCAL *pfn_getpeername) (SOCKET s, struct sockaddr *addr, int * namelen); |
962955c5 JR |
5160 | int (PASCAL *pfn_setsockopt) (SOCKET s, int level, int optname, |
5161 | const char * optval, int optlen); | |
5162 | int (PASCAL *pfn_listen) (SOCKET s, int backlog); | |
5163 | int (PASCAL *pfn_getsockname) (SOCKET s, struct sockaddr * name, | |
5164 | int * namelen); | |
5165 | SOCKET (PASCAL *pfn_accept) (SOCKET s, struct sockaddr * addr, int * addrlen); | |
5166 | int (PASCAL *pfn_recvfrom) (SOCKET s, char * buf, int len, int flags, | |
5167 | struct sockaddr * from, int * fromlen); | |
5168 | int (PASCAL *pfn_sendto) (SOCKET s, const char * buf, int len, int flags, | |
5169 | const struct sockaddr * to, int tolen); | |
5170 | ||
f1614061 RS |
5171 | /* SetHandleInformation is only needed to make sockets non-inheritable. */ |
5172 | BOOL (WINAPI *pfn_SetHandleInformation) (HANDLE object, DWORD mask, DWORD flags); | |
5173 | #ifndef HANDLE_FLAG_INHERIT | |
5174 | #define HANDLE_FLAG_INHERIT 1 | |
5175 | #endif | |
480b0c5b | 5176 | |
f249a012 RS |
5177 | HANDLE winsock_lib; |
5178 | static int winsock_inuse; | |
480b0c5b | 5179 | |
f249a012 | 5180 | BOOL |
480b0c5b GV |
5181 | term_winsock (void) |
5182 | { | |
f249a012 | 5183 | if (winsock_lib != NULL && winsock_inuse == 0) |
480b0c5b | 5184 | { |
f249a012 RS |
5185 | /* Not sure what would cause WSAENETDOWN, or even if it can happen |
5186 | after WSAStartup returns successfully, but it seems reasonable | |
5187 | to allow unloading winsock anyway in that case. */ | |
5188 | if (pfn_WSACleanup () == 0 || | |
5189 | pfn_WSAGetLastError () == WSAENETDOWN) | |
5190 | { | |
5191 | if (FreeLibrary (winsock_lib)) | |
5192 | winsock_lib = NULL; | |
5193 | return TRUE; | |
5194 | } | |
480b0c5b | 5195 | } |
f249a012 | 5196 | return FALSE; |
480b0c5b GV |
5197 | } |
5198 | ||
f249a012 RS |
5199 | BOOL |
5200 | init_winsock (int load_now) | |
480b0c5b GV |
5201 | { |
5202 | WSADATA winsockData; | |
5203 | ||
f249a012 RS |
5204 | if (winsock_lib != NULL) |
5205 | return TRUE; | |
f1614061 | 5206 | |
f1614061 RS |
5207 | pfn_SetHandleInformation |
5208 | = (void *) GetProcAddress (GetModuleHandle ("kernel32.dll"), | |
5209 | "SetHandleInformation"); | |
5210 | ||
64570b36 | 5211 | winsock_lib = LoadLibrary ("Ws2_32.dll"); |
480b0c5b GV |
5212 | |
5213 | if (winsock_lib != NULL) | |
5214 | { | |
5215 | /* dynamically link to socket functions */ | |
5216 | ||
5217 | #define LOAD_PROC(fn) \ | |
5218 | if ((pfn_##fn = (void *) GetProcAddress (winsock_lib, #fn)) == NULL) \ | |
5219 | goto fail; | |
5220 | ||
ed3751c8 JB |
5221 | LOAD_PROC (WSAStartup); |
5222 | LOAD_PROC (WSASetLastError); | |
5223 | LOAD_PROC (WSAGetLastError); | |
5224 | LOAD_PROC (WSAEventSelect); | |
5225 | LOAD_PROC (WSACreateEvent); | |
5226 | LOAD_PROC (WSACloseEvent); | |
5227 | LOAD_PROC (socket); | |
5228 | LOAD_PROC (bind); | |
5229 | LOAD_PROC (connect); | |
5230 | LOAD_PROC (ioctlsocket); | |
5231 | LOAD_PROC (recv); | |
5232 | LOAD_PROC (send); | |
5233 | LOAD_PROC (closesocket); | |
5234 | LOAD_PROC (shutdown); | |
5235 | LOAD_PROC (htons); | |
5236 | LOAD_PROC (ntohs); | |
5237 | LOAD_PROC (inet_addr); | |
5238 | LOAD_PROC (gethostname); | |
5239 | LOAD_PROC (gethostbyname); | |
5240 | LOAD_PROC (getservbyname); | |
5241 | LOAD_PROC (getpeername); | |
5242 | LOAD_PROC (WSACleanup); | |
5243 | LOAD_PROC (setsockopt); | |
5244 | LOAD_PROC (listen); | |
5245 | LOAD_PROC (getsockname); | |
5246 | LOAD_PROC (accept); | |
5247 | LOAD_PROC (recvfrom); | |
5248 | LOAD_PROC (sendto); | |
f249a012 RS |
5249 | #undef LOAD_PROC |
5250 | ||
480b0c5b GV |
5251 | /* specify version 1.1 of winsock */ |
5252 | if (pfn_WSAStartup (0x101, &winsockData) == 0) | |
5253 | { | |
f249a012 RS |
5254 | if (winsockData.wVersion != 0x101) |
5255 | goto fail; | |
5256 | ||
5257 | if (!load_now) | |
5258 | { | |
5259 | /* Report that winsock exists and is usable, but leave | |
5260 | socket functions disabled. I am assuming that calling | |
5261 | WSAStartup does not require any network interaction, | |
5262 | and in particular does not cause or require a dial-up | |
5263 | connection to be established. */ | |
5264 | ||
5265 | pfn_WSACleanup (); | |
5266 | FreeLibrary (winsock_lib); | |
5267 | winsock_lib = NULL; | |
5268 | } | |
5269 | winsock_inuse = 0; | |
5270 | return TRUE; | |
480b0c5b GV |
5271 | } |
5272 | ||
5273 | fail: | |
5274 | FreeLibrary (winsock_lib); | |
f249a012 | 5275 | winsock_lib = NULL; |
480b0c5b | 5276 | } |
f249a012 RS |
5277 | |
5278 | return FALSE; | |
480b0c5b GV |
5279 | } |
5280 | ||
5281 | ||
5282 | int h_errno = 0; | |
5283 | ||
f8381794 | 5284 | /* function to set h_errno for compatibility; map winsock error codes to |
480b0c5b GV |
5285 | normal system codes where they overlap (non-overlapping definitions |
5286 | are already in <sys/socket.h> */ | |
9bfb11f9 | 5287 | static void |
b56ceb92 | 5288 | set_errno (void) |
480b0c5b | 5289 | { |
f249a012 | 5290 | if (winsock_lib == NULL) |
480b0c5b GV |
5291 | h_errno = EINVAL; |
5292 | else | |
5293 | h_errno = pfn_WSAGetLastError (); | |
5294 | ||
5295 | switch (h_errno) | |
5296 | { | |
5297 | case WSAEACCES: h_errno = EACCES; break; | |
5298 | case WSAEBADF: h_errno = EBADF; break; | |
5299 | case WSAEFAULT: h_errno = EFAULT; break; | |
5300 | case WSAEINTR: h_errno = EINTR; break; | |
5301 | case WSAEINVAL: h_errno = EINVAL; break; | |
5302 | case WSAEMFILE: h_errno = EMFILE; break; | |
5303 | case WSAENAMETOOLONG: h_errno = ENAMETOOLONG; break; | |
5304 | case WSAENOTEMPTY: h_errno = ENOTEMPTY; break; | |
5305 | } | |
5306 | errno = h_errno; | |
5307 | } | |
5308 | ||
9bfb11f9 | 5309 | static void |
b56ceb92 | 5310 | check_errno (void) |
480b0c5b | 5311 | { |
f249a012 | 5312 | if (h_errno == 0 && winsock_lib != NULL) |
480b0c5b GV |
5313 | pfn_WSASetLastError (0); |
5314 | } | |
5315 | ||
d8fcc1b9 AI |
5316 | /* Extend strerror to handle the winsock-specific error codes. */ |
5317 | struct { | |
5318 | int errnum; | |
5319 | char * msg; | |
5320 | } _wsa_errlist[] = { | |
1db5b1ad JB |
5321 | {WSAEINTR , "Interrupted function call"}, |
5322 | {WSAEBADF , "Bad file descriptor"}, | |
5323 | {WSAEACCES , "Permission denied"}, | |
5324 | {WSAEFAULT , "Bad address"}, | |
5325 | {WSAEINVAL , "Invalid argument"}, | |
5326 | {WSAEMFILE , "Too many open files"}, | |
5327 | ||
5328 | {WSAEWOULDBLOCK , "Resource temporarily unavailable"}, | |
5329 | {WSAEINPROGRESS , "Operation now in progress"}, | |
5330 | {WSAEALREADY , "Operation already in progress"}, | |
5331 | {WSAENOTSOCK , "Socket operation on non-socket"}, | |
5332 | {WSAEDESTADDRREQ , "Destination address required"}, | |
5333 | {WSAEMSGSIZE , "Message too long"}, | |
5334 | {WSAEPROTOTYPE , "Protocol wrong type for socket"}, | |
5335 | {WSAENOPROTOOPT , "Bad protocol option"}, | |
5336 | {WSAEPROTONOSUPPORT , "Protocol not supported"}, | |
5337 | {WSAESOCKTNOSUPPORT , "Socket type not supported"}, | |
5338 | {WSAEOPNOTSUPP , "Operation not supported"}, | |
5339 | {WSAEPFNOSUPPORT , "Protocol family not supported"}, | |
5340 | {WSAEAFNOSUPPORT , "Address family not supported by protocol family"}, | |
5341 | {WSAEADDRINUSE , "Address already in use"}, | |
5342 | {WSAEADDRNOTAVAIL , "Cannot assign requested address"}, | |
5343 | {WSAENETDOWN , "Network is down"}, | |
5344 | {WSAENETUNREACH , "Network is unreachable"}, | |
5345 | {WSAENETRESET , "Network dropped connection on reset"}, | |
5346 | {WSAECONNABORTED , "Software caused connection abort"}, | |
5347 | {WSAECONNRESET , "Connection reset by peer"}, | |
5348 | {WSAENOBUFS , "No buffer space available"}, | |
5349 | {WSAEISCONN , "Socket is already connected"}, | |
5350 | {WSAENOTCONN , "Socket is not connected"}, | |
5351 | {WSAESHUTDOWN , "Cannot send after socket shutdown"}, | |
5352 | {WSAETOOMANYREFS , "Too many references"}, /* not sure */ | |
5353 | {WSAETIMEDOUT , "Connection timed out"}, | |
5354 | {WSAECONNREFUSED , "Connection refused"}, | |
5355 | {WSAELOOP , "Network loop"}, /* not sure */ | |
5356 | {WSAENAMETOOLONG , "Name is too long"}, | |
5357 | {WSAEHOSTDOWN , "Host is down"}, | |
5358 | {WSAEHOSTUNREACH , "No route to host"}, | |
5359 | {WSAENOTEMPTY , "Buffer not empty"}, /* not sure */ | |
5360 | {WSAEPROCLIM , "Too many processes"}, | |
5361 | {WSAEUSERS , "Too many users"}, /* not sure */ | |
5362 | {WSAEDQUOT , "Double quote in host name"}, /* really not sure */ | |
5363 | {WSAESTALE , "Data is stale"}, /* not sure */ | |
5364 | {WSAEREMOTE , "Remote error"}, /* not sure */ | |
5365 | ||
5366 | {WSASYSNOTREADY , "Network subsystem is unavailable"}, | |
5367 | {WSAVERNOTSUPPORTED , "WINSOCK.DLL version out of range"}, | |
5368 | {WSANOTINITIALISED , "Winsock not initialized successfully"}, | |
5369 | {WSAEDISCON , "Graceful shutdown in progress"}, | |
d8fcc1b9 | 5370 | #ifdef WSAENOMORE |
1db5b1ad JB |
5371 | {WSAENOMORE , "No more operations allowed"}, /* not sure */ |
5372 | {WSAECANCELLED , "Operation cancelled"}, /* not sure */ | |
5373 | {WSAEINVALIDPROCTABLE , "Invalid procedure table from service provider"}, | |
5374 | {WSAEINVALIDPROVIDER , "Invalid service provider version number"}, | |
5375 | {WSAEPROVIDERFAILEDINIT , "Unable to initialize a service provider"}, | |
5376 | {WSASYSCALLFAILURE , "System call failure"}, | |
5377 | {WSASERVICE_NOT_FOUND , "Service not found"}, /* not sure */ | |
5378 | {WSATYPE_NOT_FOUND , "Class type not found"}, | |
5379 | {WSA_E_NO_MORE , "No more resources available"}, /* really not sure */ | |
5380 | {WSA_E_CANCELLED , "Operation already cancelled"}, /* really not sure */ | |
5381 | {WSAEREFUSED , "Operation refused"}, /* not sure */ | |
d8fcc1b9 | 5382 | #endif |
177c0ea7 | 5383 | |
1db5b1ad JB |
5384 | {WSAHOST_NOT_FOUND , "Host not found"}, |
5385 | {WSATRY_AGAIN , "Authoritative host not found during name lookup"}, | |
5386 | {WSANO_RECOVERY , "Non-recoverable error during name lookup"}, | |
5387 | {WSANO_DATA , "Valid name, no data record of requested type"}, | |
d8fcc1b9 | 5388 | |
1db5b1ad | 5389 | {-1, NULL} |
d8fcc1b9 AI |
5390 | }; |
5391 | ||
5392 | char * | |
ed3751c8 | 5393 | sys_strerror (int error_no) |
d8fcc1b9 AI |
5394 | { |
5395 | int i; | |
5396 | static char unknown_msg[40]; | |
5397 | ||
a302c7ae AI |
5398 | if (error_no >= 0 && error_no < sys_nerr) |
5399 | return sys_errlist[error_no]; | |
d8fcc1b9 AI |
5400 | |
5401 | for (i = 0; _wsa_errlist[i].errnum >= 0; i++) | |
5402 | if (_wsa_errlist[i].errnum == error_no) | |
5403 | return _wsa_errlist[i].msg; | |
5404 | ||
ed3751c8 | 5405 | sprintf (unknown_msg, "Unidentified error: %d", error_no); |
d8fcc1b9 AI |
5406 | return unknown_msg; |
5407 | } | |
5408 | ||
480b0c5b GV |
5409 | /* [andrewi 3-May-96] I've had conflicting results using both methods, |
5410 | but I believe the method of keeping the socket handle separate (and | |
5411 | insuring it is not inheritable) is the correct one. */ | |
5412 | ||
480b0c5b | 5413 | #define SOCK_HANDLE(fd) ((SOCKET) fd_info[fd].hnd) |
480b0c5b | 5414 | |
bedf4aab | 5415 | static int socket_to_fd (SOCKET s); |
962955c5 | 5416 | |
480b0c5b | 5417 | int |
ed3751c8 | 5418 | sys_socket (int af, int type, int protocol) |
480b0c5b | 5419 | { |
962955c5 | 5420 | SOCKET s; |
480b0c5b | 5421 | |
f249a012 | 5422 | if (winsock_lib == NULL) |
480b0c5b GV |
5423 | { |
5424 | h_errno = ENETDOWN; | |
5425 | return INVALID_SOCKET; | |
5426 | } | |
5427 | ||
5428 | check_errno (); | |
5429 | ||
5430 | /* call the real socket function */ | |
962955c5 | 5431 | s = pfn_socket (af, type, protocol); |
177c0ea7 | 5432 | |
480b0c5b | 5433 | if (s != INVALID_SOCKET) |
962955c5 | 5434 | return socket_to_fd (s); |
480b0c5b | 5435 | |
962955c5 JR |
5436 | set_errno (); |
5437 | return -1; | |
5438 | } | |
5439 | ||
5440 | /* Convert a SOCKET to a file descriptor. */ | |
bedf4aab | 5441 | static int |
962955c5 JR |
5442 | socket_to_fd (SOCKET s) |
5443 | { | |
5444 | int fd; | |
5445 | child_process * cp; | |
5446 | ||
5447 | /* Although under NT 3.5 _open_osfhandle will accept a socket | |
5448 | handle, if opened with SO_OPENTYPE == SO_SYNCHRONOUS_NONALERT, | |
5449 | that does not work under NT 3.1. However, we can get the same | |
5450 | effect by using a backdoor function to replace an existing | |
5451 | descriptor handle with the one we want. */ | |
5452 | ||
5453 | /* allocate a file descriptor (with appropriate flags) */ | |
5454 | fd = _open ("NUL:", _O_RDWR); | |
5455 | if (fd >= 0) | |
5456 | { | |
962955c5 JR |
5457 | /* Make a non-inheritable copy of the socket handle. Note |
5458 | that it is possible that sockets aren't actually kernel | |
5459 | handles, which appears to be the case on Windows 9x when | |
5460 | the MS Proxy winsock client is installed. */ | |
5461 | { | |
5462 | /* Apparently there is a bug in NT 3.51 with some service | |
5463 | packs, which prevents using DuplicateHandle to make a | |
5464 | socket handle non-inheritable (causes WSACleanup to | |
5465 | hang). The work-around is to use SetHandleInformation | |
5466 | instead if it is available and implemented. */ | |
5467 | if (pfn_SetHandleInformation) | |
480b0c5b | 5468 | { |
962955c5 JR |
5469 | pfn_SetHandleInformation ((HANDLE) s, HANDLE_FLAG_INHERIT, 0); |
5470 | } | |
5471 | else | |
5472 | { | |
5473 | HANDLE parent = GetCurrentProcess (); | |
5474 | HANDLE new_s = INVALID_HANDLE_VALUE; | |
5475 | ||
5476 | if (DuplicateHandle (parent, | |
5477 | (HANDLE) s, | |
5478 | parent, | |
5479 | &new_s, | |
5480 | 0, | |
5481 | FALSE, | |
5482 | DUPLICATE_SAME_ACCESS)) | |
f1614061 | 5483 | { |
962955c5 JR |
5484 | /* It is possible that DuplicateHandle succeeds even |
5485 | though the socket wasn't really a kernel handle, | |
5486 | because a real handle has the same value. So | |
5487 | test whether the new handle really is a socket. */ | |
5488 | long nonblocking = 0; | |
5489 | if (pfn_ioctlsocket ((SOCKET) new_s, FIONBIO, &nonblocking) == 0) | |
ca149beb | 5490 | { |
962955c5 JR |
5491 | pfn_closesocket (s); |
5492 | s = (SOCKET) new_s; | |
5493 | } | |
5494 | else | |
5495 | { | |
5496 | CloseHandle (new_s); | |
5497 | } | |
177c0ea7 | 5498 | } |
480b0c5b | 5499 | } |
962955c5 JR |
5500 | } |
5501 | fd_info[fd].hnd = (HANDLE) s; | |
480b0c5b | 5502 | |
962955c5 JR |
5503 | /* set our own internal flags */ |
5504 | fd_info[fd].flags = FILE_SOCKET | FILE_BINARY | FILE_READ | FILE_WRITE; | |
480b0c5b | 5505 | |
962955c5 JR |
5506 | cp = new_child (); |
5507 | if (cp) | |
5508 | { | |
5509 | cp->fd = fd; | |
5510 | cp->status = STATUS_READ_ACKNOWLEDGED; | |
480b0c5b | 5511 | |
962955c5 JR |
5512 | /* attach child_process to fd_info */ |
5513 | if (fd_info[ fd ].cp != NULL) | |
5514 | { | |
5515 | DebPrint (("sys_socket: fd_info[%d] apparently in use!\n", fd)); | |
1088b922 | 5516 | emacs_abort (); |
480b0c5b GV |
5517 | } |
5518 | ||
962955c5 JR |
5519 | fd_info[ fd ].cp = cp; |
5520 | ||
5521 | /* success! */ | |
5522 | winsock_inuse++; /* count open sockets */ | |
5523 | return fd; | |
480b0c5b | 5524 | } |
480b0c5b | 5525 | |
962955c5 JR |
5526 | /* clean up */ |
5527 | _close (fd); | |
5528 | } | |
5529 | pfn_closesocket (s); | |
5530 | h_errno = EMFILE; | |
480b0c5b GV |
5531 | return -1; |
5532 | } | |
5533 | ||
480b0c5b GV |
5534 | int |
5535 | sys_bind (int s, const struct sockaddr * addr, int namelen) | |
5536 | { | |
f249a012 | 5537 | if (winsock_lib == NULL) |
480b0c5b GV |
5538 | { |
5539 | h_errno = ENOTSOCK; | |
5540 | return SOCKET_ERROR; | |
5541 | } | |
5542 | ||
5543 | check_errno (); | |
5544 | if (fd_info[s].flags & FILE_SOCKET) | |
5545 | { | |
5546 | int rc = pfn_bind (SOCK_HANDLE (s), addr, namelen); | |
5547 | if (rc == SOCKET_ERROR) | |
5548 | set_errno (); | |
5549 | return rc; | |
5550 | } | |
5551 | h_errno = ENOTSOCK; | |
5552 | return SOCKET_ERROR; | |
5553 | } | |
5554 | ||
480b0c5b GV |
5555 | int |
5556 | sys_connect (int s, const struct sockaddr * name, int namelen) | |
5557 | { | |
f249a012 | 5558 | if (winsock_lib == NULL) |
480b0c5b GV |
5559 | { |
5560 | h_errno = ENOTSOCK; | |
5561 | return SOCKET_ERROR; | |
5562 | } | |
5563 | ||
5564 | check_errno (); | |
5565 | if (fd_info[s].flags & FILE_SOCKET) | |
5566 | { | |
5567 | int rc = pfn_connect (SOCK_HANDLE (s), name, namelen); | |
5568 | if (rc == SOCKET_ERROR) | |
5569 | set_errno (); | |
5570 | return rc; | |
5571 | } | |
5572 | h_errno = ENOTSOCK; | |
5573 | return SOCKET_ERROR; | |
5574 | } | |
5575 | ||
5576 | u_short | |
5577 | sys_htons (u_short hostshort) | |
5578 | { | |
f249a012 | 5579 | return (winsock_lib != NULL) ? |
480b0c5b GV |
5580 | pfn_htons (hostshort) : hostshort; |
5581 | } | |
5582 | ||
5583 | u_short | |
5584 | sys_ntohs (u_short netshort) | |
5585 | { | |
f249a012 | 5586 | return (winsock_lib != NULL) ? |
480b0c5b GV |
5587 | pfn_ntohs (netshort) : netshort; |
5588 | } | |
5589 | ||
5590 | unsigned long | |
5591 | sys_inet_addr (const char * cp) | |
5592 | { | |
f249a012 | 5593 | return (winsock_lib != NULL) ? |
480b0c5b GV |
5594 | pfn_inet_addr (cp) : INADDR_NONE; |
5595 | } | |
5596 | ||
5597 | int | |
5598 | sys_gethostname (char * name, int namelen) | |
5599 | { | |
f249a012 | 5600 | if (winsock_lib != NULL) |
480b0c5b GV |
5601 | return pfn_gethostname (name, namelen); |
5602 | ||
5603 | if (namelen > MAX_COMPUTERNAME_LENGTH) | |
a302c7ae | 5604 | return !GetComputerName (name, (DWORD *)&namelen); |
480b0c5b GV |
5605 | |
5606 | h_errno = EFAULT; | |
5607 | return SOCKET_ERROR; | |
5608 | } | |
5609 | ||
5610 | struct hostent * | |
ed3751c8 | 5611 | sys_gethostbyname (const char * name) |
480b0c5b GV |
5612 | { |
5613 | struct hostent * host; | |
5614 | ||
f249a012 | 5615 | if (winsock_lib == NULL) |
480b0c5b GV |
5616 | { |
5617 | h_errno = ENETDOWN; | |
5618 | return NULL; | |
5619 | } | |
5620 | ||
5621 | check_errno (); | |
5622 | host = pfn_gethostbyname (name); | |
5623 | if (!host) | |
5624 | set_errno (); | |
5625 | return host; | |
5626 | } | |
5627 | ||
5628 | struct servent * | |
ed3751c8 | 5629 | sys_getservbyname (const char * name, const char * proto) |
480b0c5b GV |
5630 | { |
5631 | struct servent * serv; | |
5632 | ||
f249a012 | 5633 | if (winsock_lib == NULL) |
480b0c5b GV |
5634 | { |
5635 | h_errno = ENETDOWN; | |
5636 | return NULL; | |
5637 | } | |
5638 | ||
5639 | check_errno (); | |
5640 | serv = pfn_getservbyname (name, proto); | |
5641 | if (!serv) | |
5642 | set_errno (); | |
5643 | return serv; | |
5644 | } | |
5645 | ||
ecd270eb JR |
5646 | int |
5647 | sys_getpeername (int s, struct sockaddr *addr, int * namelen) | |
5648 | { | |
5649 | if (winsock_lib == NULL) | |
5650 | { | |
5651 | h_errno = ENETDOWN; | |
5652 | return SOCKET_ERROR; | |
5653 | } | |
5654 | ||
5655 | check_errno (); | |
5656 | if (fd_info[s].flags & FILE_SOCKET) | |
5657 | { | |
5658 | int rc = pfn_getpeername (SOCK_HANDLE (s), addr, namelen); | |
5659 | if (rc == SOCKET_ERROR) | |
5660 | set_errno (); | |
5661 | return rc; | |
5662 | } | |
5663 | h_errno = ENOTSOCK; | |
5664 | return SOCKET_ERROR; | |
5665 | } | |
5666 | ||
380961a6 GV |
5667 | int |
5668 | sys_shutdown (int s, int how) | |
5669 | { | |
380961a6 GV |
5670 | if (winsock_lib == NULL) |
5671 | { | |
5672 | h_errno = ENETDOWN; | |
5673 | return SOCKET_ERROR; | |
5674 | } | |
5675 | ||
5676 | check_errno (); | |
5677 | if (fd_info[s].flags & FILE_SOCKET) | |
5678 | { | |
5679 | int rc = pfn_shutdown (SOCK_HANDLE (s), how); | |
962955c5 JR |
5680 | if (rc == SOCKET_ERROR) |
5681 | set_errno (); | |
5682 | return rc; | |
5683 | } | |
5684 | h_errno = ENOTSOCK; | |
5685 | return SOCKET_ERROR; | |
5686 | } | |
5687 | ||
5688 | int | |
a5a389bb | 5689 | sys_setsockopt (int s, int level, int optname, const void * optval, int optlen) |
962955c5 JR |
5690 | { |
5691 | if (winsock_lib == NULL) | |
5692 | { | |
5693 | h_errno = ENETDOWN; | |
5694 | return SOCKET_ERROR; | |
5695 | } | |
5696 | ||
5697 | check_errno (); | |
5698 | if (fd_info[s].flags & FILE_SOCKET) | |
5699 | { | |
5700 | int rc = pfn_setsockopt (SOCK_HANDLE (s), level, optname, | |
a5a389bb | 5701 | (const char *)optval, optlen); |
962955c5 JR |
5702 | if (rc == SOCKET_ERROR) |
5703 | set_errno (); | |
5704 | return rc; | |
5705 | } | |
5706 | h_errno = ENOTSOCK; | |
177c0ea7 | 5707 | return SOCKET_ERROR; |
962955c5 JR |
5708 | } |
5709 | ||
5710 | int | |
5711 | sys_listen (int s, int backlog) | |
5712 | { | |
5713 | if (winsock_lib == NULL) | |
5714 | { | |
5715 | h_errno = ENETDOWN; | |
5716 | return SOCKET_ERROR; | |
5717 | } | |
5718 | ||
5719 | check_errno (); | |
5720 | if (fd_info[s].flags & FILE_SOCKET) | |
5721 | { | |
5722 | int rc = pfn_listen (SOCK_HANDLE (s), backlog); | |
5723 | if (rc == SOCKET_ERROR) | |
5724 | set_errno (); | |
26fb7bc4 | 5725 | else |
64570b36 | 5726 | fd_info[s].flags |= FILE_LISTEN; |
962955c5 JR |
5727 | return rc; |
5728 | } | |
5729 | h_errno = ENOTSOCK; | |
177c0ea7 | 5730 | return SOCKET_ERROR; |
962955c5 JR |
5731 | } |
5732 | ||
5733 | int | |
5734 | sys_getsockname (int s, struct sockaddr * name, int * namelen) | |
5735 | { | |
5736 | if (winsock_lib == NULL) | |
5737 | { | |
5738 | h_errno = ENETDOWN; | |
5739 | return SOCKET_ERROR; | |
5740 | } | |
5741 | ||
5742 | check_errno (); | |
5743 | if (fd_info[s].flags & FILE_SOCKET) | |
5744 | { | |
5745 | int rc = pfn_getsockname (SOCK_HANDLE (s), name, namelen); | |
5746 | if (rc == SOCKET_ERROR) | |
5747 | set_errno (); | |
5748 | return rc; | |
5749 | } | |
5750 | h_errno = ENOTSOCK; | |
177c0ea7 | 5751 | return SOCKET_ERROR; |
962955c5 JR |
5752 | } |
5753 | ||
5754 | int | |
5755 | sys_accept (int s, struct sockaddr * addr, int * addrlen) | |
5756 | { | |
5757 | if (winsock_lib == NULL) | |
5758 | { | |
5759 | h_errno = ENETDOWN; | |
5760 | return -1; | |
5761 | } | |
5762 | ||
5763 | check_errno (); | |
26fb7bc4 | 5764 | if (fd_info[s].flags & FILE_LISTEN) |
962955c5 | 5765 | { |
a0ad1860 | 5766 | SOCKET t = pfn_accept (SOCK_HANDLE (s), addr, addrlen); |
64570b36 KS |
5767 | int fd = -1; |
5768 | if (t == INVALID_SOCKET) | |
5769 | set_errno (); | |
5770 | else | |
5771 | fd = socket_to_fd (t); | |
962955c5 | 5772 | |
64570b36 KS |
5773 | fd_info[s].cp->status = STATUS_READ_ACKNOWLEDGED; |
5774 | ResetEvent (fd_info[s].cp->char_avail); | |
5775 | return fd; | |
962955c5 JR |
5776 | } |
5777 | h_errno = ENOTSOCK; | |
5778 | return -1; | |
5779 | } | |
5780 | ||
5781 | int | |
5782 | sys_recvfrom (int s, char * buf, int len, int flags, | |
b56ceb92 | 5783 | struct sockaddr * from, int * fromlen) |
962955c5 JR |
5784 | { |
5785 | if (winsock_lib == NULL) | |
5786 | { | |
5787 | h_errno = ENETDOWN; | |
5788 | return SOCKET_ERROR; | |
5789 | } | |
5790 | ||
5791 | check_errno (); | |
5792 | if (fd_info[s].flags & FILE_SOCKET) | |
5793 | { | |
5794 | int rc = pfn_recvfrom (SOCK_HANDLE (s), buf, len, flags, from, fromlen); | |
5795 | if (rc == SOCKET_ERROR) | |
5796 | set_errno (); | |
5797 | return rc; | |
5798 | } | |
5799 | h_errno = ENOTSOCK; | |
5800 | return SOCKET_ERROR; | |
5801 | } | |
5802 | ||
5803 | int | |
5804 | sys_sendto (int s, const char * buf, int len, int flags, | |
5805 | const struct sockaddr * to, int tolen) | |
5806 | { | |
5807 | if (winsock_lib == NULL) | |
5808 | { | |
5809 | h_errno = ENETDOWN; | |
5810 | return SOCKET_ERROR; | |
5811 | } | |
5812 | ||
5813 | check_errno (); | |
5814 | if (fd_info[s].flags & FILE_SOCKET) | |
5815 | { | |
5816 | int rc = pfn_sendto (SOCK_HANDLE (s), buf, len, flags, to, tolen); | |
380961a6 GV |
5817 | if (rc == SOCKET_ERROR) |
5818 | set_errno (); | |
5819 | return rc; | |
5820 | } | |
5821 | h_errno = ENOTSOCK; | |
5822 | return SOCKET_ERROR; | |
5823 | } | |
5824 | ||
ecd270eb JR |
5825 | /* Windows does not have an fcntl function. Provide an implementation |
5826 | solely for making sockets non-blocking. */ | |
5827 | int | |
5828 | fcntl (int s, int cmd, int options) | |
5829 | { | |
5830 | if (winsock_lib == NULL) | |
5831 | { | |
5832 | h_errno = ENETDOWN; | |
5833 | return -1; | |
5834 | } | |
5835 | ||
5836 | check_errno (); | |
5837 | if (fd_info[s].flags & FILE_SOCKET) | |
5838 | { | |
5839 | if (cmd == F_SETFL && options == O_NDELAY) | |
5840 | { | |
5841 | unsigned long nblock = 1; | |
5842 | int rc = pfn_ioctlsocket (SOCK_HANDLE (s), FIONBIO, &nblock); | |
5843 | if (rc == SOCKET_ERROR) | |
9d4f32e8 | 5844 | set_errno (); |
ecd270eb JR |
5845 | /* Keep track of the fact that we set this to non-blocking. */ |
5846 | fd_info[s].flags |= FILE_NDELAY; | |
5847 | return rc; | |
5848 | } | |
5849 | else | |
5850 | { | |
5851 | h_errno = EINVAL; | |
5852 | return SOCKET_ERROR; | |
5853 | } | |
5854 | } | |
5855 | h_errno = ENOTSOCK; | |
5856 | return SOCKET_ERROR; | |
5857 | } | |
5858 | ||
480b0c5b GV |
5859 | |
5860 | /* Shadow main io functions: we need to handle pipes and sockets more | |
5861 | intelligently, and implement non-blocking mode as well. */ | |
5862 | ||
5863 | int | |
5864 | sys_close (int fd) | |
5865 | { | |
5866 | int rc; | |
5867 | ||
7559f399 | 5868 | if (fd < 0) |
480b0c5b GV |
5869 | { |
5870 | errno = EBADF; | |
5871 | return -1; | |
5872 | } | |
5873 | ||
7559f399 | 5874 | if (fd < MAXDESC && fd_info[fd].cp) |
480b0c5b GV |
5875 | { |
5876 | child_process * cp = fd_info[fd].cp; | |
5877 | ||
5878 | fd_info[fd].cp = NULL; | |
5879 | ||
5880 | if (CHILD_ACTIVE (cp)) | |
5881 | { | |
5882 | /* if last descriptor to active child_process then cleanup */ | |
5883 | int i; | |
5884 | for (i = 0; i < MAXDESC; i++) | |
5885 | { | |
5886 | if (i == fd) | |
5887 | continue; | |
5888 | if (fd_info[i].cp == cp) | |
5889 | break; | |
5890 | } | |
5891 | if (i == MAXDESC) | |
5892 | { | |
480b0c5b GV |
5893 | if (fd_info[fd].flags & FILE_SOCKET) |
5894 | { | |
1088b922 | 5895 | if (winsock_lib == NULL) emacs_abort (); |
480b0c5b GV |
5896 | |
5897 | pfn_shutdown (SOCK_HANDLE (fd), 2); | |
5898 | rc = pfn_closesocket (SOCK_HANDLE (fd)); | |
7d701334 | 5899 | |
f249a012 | 5900 | winsock_inuse--; /* count open sockets */ |
480b0c5b | 5901 | } |
480b0c5b GV |
5902 | delete_child (cp); |
5903 | } | |
5904 | } | |
5905 | } | |
5906 | ||
5907 | /* Note that sockets do not need special treatment here (at least on | |
e9e23e23 | 5908 | NT and Windows 95 using the standard tcp/ip stacks) - it appears that |
480b0c5b GV |
5909 | closesocket is equivalent to CloseHandle, which is to be expected |
5910 | because socket handles are fully fledged kernel handles. */ | |
5911 | rc = _close (fd); | |
5912 | ||
7559f399 | 5913 | if (rc == 0 && fd < MAXDESC) |
480b0c5b GV |
5914 | fd_info[fd].flags = 0; |
5915 | ||
5916 | return rc; | |
5917 | } | |
5918 | ||
5919 | int | |
5920 | sys_dup (int fd) | |
5921 | { | |
5922 | int new_fd; | |
5923 | ||
5924 | new_fd = _dup (fd); | |
7559f399 | 5925 | if (new_fd >= 0 && new_fd < MAXDESC) |
480b0c5b GV |
5926 | { |
5927 | /* duplicate our internal info as well */ | |
5928 | fd_info[new_fd] = fd_info[fd]; | |
5929 | } | |
5930 | return new_fd; | |
5931 | } | |
5932 | ||
480b0c5b GV |
5933 | int |
5934 | sys_dup2 (int src, int dst) | |
5935 | { | |
5936 | int rc; | |
5937 | ||
5938 | if (dst < 0 || dst >= MAXDESC) | |
5939 | { | |
5940 | errno = EBADF; | |
5941 | return -1; | |
5942 | } | |
5943 | ||
5944 | /* make sure we close the destination first if it's a pipe or socket */ | |
5945 | if (src != dst && fd_info[dst].flags != 0) | |
5946 | sys_close (dst); | |
177c0ea7 | 5947 | |
480b0c5b GV |
5948 | rc = _dup2 (src, dst); |
5949 | if (rc == 0) | |
5950 | { | |
5951 | /* duplicate our internal info as well */ | |
5952 | fd_info[dst] = fd_info[src]; | |
5953 | } | |
5954 | return rc; | |
5955 | } | |
5956 | ||
480b0c5b GV |
5957 | /* Unix pipe() has only one arg */ |
5958 | int | |
5959 | sys_pipe (int * phandles) | |
5960 | { | |
5961 | int rc; | |
5962 | unsigned flags; | |
480b0c5b | 5963 | |
76b3903d GV |
5964 | /* make pipe handles non-inheritable; when we spawn a child, we |
5965 | replace the relevant handle with an inheritable one. Also put | |
5966 | pipes into binary mode; we will do text mode translation ourselves | |
5967 | if required. */ | |
5968 | rc = _pipe (phandles, 0, _O_NOINHERIT | _O_BINARY); | |
480b0c5b GV |
5969 | |
5970 | if (rc == 0) | |
5971 | { | |
cb72110d JR |
5972 | /* Protect against overflow, since Windows can open more handles than |
5973 | our fd_info array has room for. */ | |
5974 | if (phandles[0] >= MAXDESC || phandles[1] >= MAXDESC) | |
5975 | { | |
5976 | _close (phandles[0]); | |
5977 | _close (phandles[1]); | |
5978 | rc = -1; | |
5979 | } | |
5980 | else | |
5981 | { | |
5982 | flags = FILE_PIPE | FILE_READ | FILE_BINARY; | |
5983 | fd_info[phandles[0]].flags = flags; | |
480b0c5b | 5984 | |
cb72110d JR |
5985 | flags = FILE_PIPE | FILE_WRITE | FILE_BINARY; |
5986 | fd_info[phandles[1]].flags = flags; | |
5987 | } | |
480b0c5b GV |
5988 | } |
5989 | ||
5990 | return rc; | |
5991 | } | |
5992 | ||
5993 | /* Function to do blocking read of one byte, needed to implement | |
5994 | select. It is only allowed on sockets and pipes. */ | |
5995 | int | |
5996 | _sys_read_ahead (int fd) | |
5997 | { | |
5998 | child_process * cp; | |
5999 | int rc; | |
6000 | ||
6001 | if (fd < 0 || fd >= MAXDESC) | |
6002 | return STATUS_READ_ERROR; | |
6003 | ||
6004 | cp = fd_info[fd].cp; | |
6005 | ||
6006 | if (cp == NULL || cp->fd != fd || cp->status != STATUS_READ_READY) | |
6007 | return STATUS_READ_ERROR; | |
6008 | ||
d888760c | 6009 | if ((fd_info[fd].flags & (FILE_PIPE | FILE_SERIAL | FILE_SOCKET)) == 0 |
480b0c5b GV |
6010 | || (fd_info[fd].flags & FILE_READ) == 0) |
6011 | { | |
d888760c | 6012 | DebPrint (("_sys_read_ahead: internal error: fd %d is not a pipe, serial port, or socket!\n", fd)); |
1088b922 | 6013 | emacs_abort (); |
480b0c5b | 6014 | } |
177c0ea7 | 6015 | |
480b0c5b | 6016 | cp->status = STATUS_READ_IN_PROGRESS; |
177c0ea7 | 6017 | |
480b0c5b | 6018 | if (fd_info[fd].flags & FILE_PIPE) |
f7554349 | 6019 | { |
f7554349 KH |
6020 | rc = _read (fd, &cp->chr, sizeof (char)); |
6021 | ||
6022 | /* Give subprocess time to buffer some more output for us before | |
e9e23e23 | 6023 | reporting that input is available; we need this because Windows 95 |
f7554349 KH |
6024 | connects DOS programs to pipes by making the pipe appear to be |
6025 | the normal console stdout - as a result most DOS programs will | |
d888760c | 6026 | write to stdout without buffering, ie. one character at a |
fbd6baed | 6027 | time. Even some W32 programs do this - "dir" in a command |
f7554349 KH |
6028 | shell on NT is very slow if we don't do this. */ |
6029 | if (rc > 0) | |
6030 | { | |
78806724 | 6031 | int wait = w32_pipe_read_delay; |
f7554349 KH |
6032 | |
6033 | if (wait > 0) | |
6034 | Sleep (wait); | |
6035 | else if (wait < 0) | |
6036 | while (++wait <= 0) | |
6037 | /* Yield remainder of our time slice, effectively giving a | |
6038 | temporary priority boost to the child process. */ | |
6039 | Sleep (0); | |
6040 | } | |
6041 | } | |
d888760c GM |
6042 | else if (fd_info[fd].flags & FILE_SERIAL) |
6043 | { | |
6044 | HANDLE hnd = fd_info[fd].hnd; | |
6045 | OVERLAPPED *ovl = &fd_info[fd].cp->ovl_read; | |
6046 | COMMTIMEOUTS ct; | |
6047 | ||
6048 | /* Configure timeouts for blocking read. */ | |
6049 | if (!GetCommTimeouts (hnd, &ct)) | |
6050 | return STATUS_READ_ERROR; | |
6051 | ct.ReadIntervalTimeout = 0; | |
6052 | ct.ReadTotalTimeoutMultiplier = 0; | |
6053 | ct.ReadTotalTimeoutConstant = 0; | |
6054 | if (!SetCommTimeouts (hnd, &ct)) | |
6055 | return STATUS_READ_ERROR; | |
6056 | ||
6057 | if (!ReadFile (hnd, &cp->chr, sizeof (char), (DWORD*) &rc, ovl)) | |
6058 | { | |
6059 | if (GetLastError () != ERROR_IO_PENDING) | |
6060 | return STATUS_READ_ERROR; | |
6061 | if (!GetOverlappedResult (hnd, ovl, (DWORD*) &rc, TRUE)) | |
6062 | return STATUS_READ_ERROR; | |
6063 | } | |
6064 | } | |
480b0c5b | 6065 | else if (fd_info[fd].flags & FILE_SOCKET) |
ecd270eb JR |
6066 | { |
6067 | unsigned long nblock = 0; | |
6068 | /* We always want this to block, so temporarily disable NDELAY. */ | |
6069 | if (fd_info[fd].flags & FILE_NDELAY) | |
6070 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONBIO, &nblock); | |
6071 | ||
6072 | rc = pfn_recv (SOCK_HANDLE (fd), &cp->chr, sizeof (char), 0); | |
6073 | ||
6074 | if (fd_info[fd].flags & FILE_NDELAY) | |
6075 | { | |
6076 | nblock = 1; | |
6077 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONBIO, &nblock); | |
6078 | } | |
6079 | } | |
177c0ea7 | 6080 | |
480b0c5b GV |
6081 | if (rc == sizeof (char)) |
6082 | cp->status = STATUS_READ_SUCCEEDED; | |
6083 | else | |
6084 | cp->status = STATUS_READ_FAILED; | |
6085 | ||
6086 | return cp->status; | |
6087 | } | |
6088 | ||
9bfb11f9 KS |
6089 | int |
6090 | _sys_wait_accept (int fd) | |
64570b36 KS |
6091 | { |
6092 | HANDLE hEv; | |
6093 | child_process * cp; | |
6094 | int rc; | |
6095 | ||
6096 | if (fd < 0 || fd >= MAXDESC) | |
6097 | return STATUS_READ_ERROR; | |
6098 | ||
6099 | cp = fd_info[fd].cp; | |
6100 | ||
6101 | if (cp == NULL || cp->fd != fd || cp->status != STATUS_READ_READY) | |
6102 | return STATUS_READ_ERROR; | |
6103 | ||
6104 | cp->status = STATUS_READ_FAILED; | |
6105 | ||
6106 | hEv = pfn_WSACreateEvent (); | |
6107 | rc = pfn_WSAEventSelect (SOCK_HANDLE (fd), hEv, FD_ACCEPT); | |
6108 | if (rc != SOCKET_ERROR) | |
6109 | { | |
6110 | rc = WaitForSingleObject (hEv, INFINITE); | |
6111 | pfn_WSAEventSelect (SOCK_HANDLE (fd), NULL, 0); | |
64570b36 KS |
6112 | if (rc == WAIT_OBJECT_0) |
6113 | cp->status = STATUS_READ_SUCCEEDED; | |
6114 | } | |
7046f191 | 6115 | pfn_WSACloseEvent (hEv); |
64570b36 KS |
6116 | |
6117 | return cp->status; | |
6118 | } | |
6119 | ||
480b0c5b GV |
6120 | int |
6121 | sys_read (int fd, char * buffer, unsigned int count) | |
6122 | { | |
6123 | int nchars; | |
480b0c5b GV |
6124 | int to_read; |
6125 | DWORD waiting; | |
76b3903d | 6126 | char * orig_buffer = buffer; |
480b0c5b | 6127 | |
7559f399 | 6128 | if (fd < 0) |
480b0c5b GV |
6129 | { |
6130 | errno = EBADF; | |
6131 | return -1; | |
6132 | } | |
6133 | ||
d888760c | 6134 | if (fd < MAXDESC && fd_info[fd].flags & (FILE_PIPE | FILE_SOCKET | FILE_SERIAL)) |
480b0c5b GV |
6135 | { |
6136 | child_process *cp = fd_info[fd].cp; | |
6137 | ||
6138 | if ((fd_info[fd].flags & FILE_READ) == 0) | |
6139 | { | |
6140 | errno = EBADF; | |
6141 | return -1; | |
6142 | } | |
6143 | ||
76b3903d GV |
6144 | nchars = 0; |
6145 | ||
6146 | /* re-read CR carried over from last read */ | |
6147 | if (fd_info[fd].flags & FILE_LAST_CR) | |
6148 | { | |
1088b922 | 6149 | if (fd_info[fd].flags & FILE_BINARY) emacs_abort (); |
76b3903d GV |
6150 | *buffer++ = 0x0d; |
6151 | count--; | |
6152 | nchars++; | |
f52eb3ef | 6153 | fd_info[fd].flags &= ~FILE_LAST_CR; |
76b3903d GV |
6154 | } |
6155 | ||
480b0c5b GV |
6156 | /* presence of a child_process structure means we are operating in |
6157 | non-blocking mode - otherwise we just call _read directly. | |
6158 | Note that the child_process structure might be missing because | |
6159 | reap_subprocess has been called; in this case the pipe is | |
6160 | already broken, so calling _read on it is okay. */ | |
6161 | if (cp) | |
6162 | { | |
6163 | int current_status = cp->status; | |
6164 | ||
6165 | switch (current_status) | |
6166 | { | |
6167 | case STATUS_READ_FAILED: | |
6168 | case STATUS_READ_ERROR: | |
f52eb3ef GV |
6169 | /* report normal EOF if nothing in buffer */ |
6170 | if (nchars <= 0) | |
6171 | fd_info[fd].flags |= FILE_AT_EOF; | |
6172 | return nchars; | |
480b0c5b GV |
6173 | |
6174 | case STATUS_READ_READY: | |
6175 | case STATUS_READ_IN_PROGRESS: | |
6176 | DebPrint (("sys_read called when read is in progress\n")); | |
6177 | errno = EWOULDBLOCK; | |
6178 | return -1; | |
6179 | ||
6180 | case STATUS_READ_SUCCEEDED: | |
6181 | /* consume read-ahead char */ | |
6182 | *buffer++ = cp->chr; | |
6183 | count--; | |
76b3903d | 6184 | nchars++; |
480b0c5b GV |
6185 | cp->status = STATUS_READ_ACKNOWLEDGED; |
6186 | ResetEvent (cp->char_avail); | |
6187 | ||
6188 | case STATUS_READ_ACKNOWLEDGED: | |
6189 | break; | |
6190 | ||
6191 | default: | |
6192 | DebPrint (("sys_read: bad status %d\n", current_status)); | |
6193 | errno = EBADF; | |
6194 | return -1; | |
6195 | } | |
6196 | ||
6197 | if (fd_info[fd].flags & FILE_PIPE) | |
6198 | { | |
6199 | PeekNamedPipe ((HANDLE) _get_osfhandle (fd), NULL, 0, NULL, &waiting, NULL); | |
6200 | to_read = min (waiting, (DWORD) count); | |
f52eb3ef GV |
6201 | |
6202 | if (to_read > 0) | |
6203 | nchars += _read (fd, buffer, to_read); | |
480b0c5b | 6204 | } |
d888760c GM |
6205 | else if (fd_info[fd].flags & FILE_SERIAL) |
6206 | { | |
6207 | HANDLE hnd = fd_info[fd].hnd; | |
6208 | OVERLAPPED *ovl = &fd_info[fd].cp->ovl_read; | |
d888760c GM |
6209 | int rc = 0; |
6210 | COMMTIMEOUTS ct; | |
6211 | ||
6212 | if (count > 0) | |
6213 | { | |
6214 | /* Configure timeouts for non-blocking read. */ | |
6215 | if (!GetCommTimeouts (hnd, &ct)) | |
6216 | { | |
6217 | errno = EIO; | |
6218 | return -1; | |
6219 | } | |
6220 | ct.ReadIntervalTimeout = MAXDWORD; | |
6221 | ct.ReadTotalTimeoutMultiplier = 0; | |
6222 | ct.ReadTotalTimeoutConstant = 0; | |
6223 | if (!SetCommTimeouts (hnd, &ct)) | |
6224 | { | |
6225 | errno = EIO; | |
6226 | return -1; | |
6227 | } | |
6228 | ||
6229 | if (!ResetEvent (ovl->hEvent)) | |
6230 | { | |
6231 | errno = EIO; | |
6232 | return -1; | |
6233 | } | |
6234 | if (!ReadFile (hnd, buffer, count, (DWORD*) &rc, ovl)) | |
6235 | { | |
6236 | if (GetLastError () != ERROR_IO_PENDING) | |
6237 | { | |
6238 | errno = EIO; | |
6239 | return -1; | |
6240 | } | |
6241 | if (!GetOverlappedResult (hnd, ovl, (DWORD*) &rc, TRUE)) | |
6242 | { | |
6243 | errno = EIO; | |
6244 | return -1; | |
6245 | } | |
6246 | } | |
6247 | nchars += rc; | |
6248 | } | |
6249 | } | |
480b0c5b GV |
6250 | else /* FILE_SOCKET */ |
6251 | { | |
1088b922 | 6252 | if (winsock_lib == NULL) emacs_abort (); |
480b0c5b GV |
6253 | |
6254 | /* do the equivalent of a non-blocking read */ | |
6255 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONREAD, &waiting); | |
76b3903d | 6256 | if (waiting == 0 && nchars == 0) |
480b0c5b GV |
6257 | { |
6258 | h_errno = errno = EWOULDBLOCK; | |
6259 | return -1; | |
6260 | } | |
6261 | ||
480b0c5b GV |
6262 | if (waiting) |
6263 | { | |
6264 | /* always use binary mode for sockets */ | |
76b3903d GV |
6265 | int res = pfn_recv (SOCK_HANDLE (fd), buffer, count, 0); |
6266 | if (res == SOCKET_ERROR) | |
480b0c5b | 6267 | { |
ed3751c8 JB |
6268 | DebPrint (("sys_read.recv failed with error %d on socket %ld\n", |
6269 | pfn_WSAGetLastError (), SOCK_HANDLE (fd))); | |
76b3903d GV |
6270 | set_errno (); |
6271 | return -1; | |
480b0c5b | 6272 | } |
76b3903d | 6273 | nchars += res; |
480b0c5b GV |
6274 | } |
6275 | } | |
480b0c5b GV |
6276 | } |
6277 | else | |
f52eb3ef GV |
6278 | { |
6279 | int nread = _read (fd, buffer, count); | |
6280 | if (nread >= 0) | |
6281 | nchars += nread; | |
6282 | else if (nchars == 0) | |
6283 | nchars = nread; | |
6284 | } | |
76b3903d | 6285 | |
f52eb3ef GV |
6286 | if (nchars <= 0) |
6287 | fd_info[fd].flags |= FILE_AT_EOF; | |
76b3903d | 6288 | /* Perform text mode translation if required. */ |
f52eb3ef | 6289 | else if ((fd_info[fd].flags & FILE_BINARY) == 0) |
76b3903d GV |
6290 | { |
6291 | nchars = crlf_to_lf (nchars, orig_buffer); | |
6292 | /* If buffer contains only CR, return that. To be absolutely | |
6293 | sure we should attempt to read the next char, but in | |
6294 | practice a CR to be followed by LF would not appear by | |
6295 | itself in the buffer. */ | |
6296 | if (nchars > 1 && orig_buffer[nchars - 1] == 0x0d) | |
6297 | { | |
6298 | fd_info[fd].flags |= FILE_LAST_CR; | |
6299 | nchars--; | |
6300 | } | |
76b3903d | 6301 | } |
480b0c5b GV |
6302 | } |
6303 | else | |
6304 | nchars = _read (fd, buffer, count); | |
6305 | ||
76b3903d | 6306 | return nchars; |
480b0c5b GV |
6307 | } |
6308 | ||
d888760c GM |
6309 | /* From w32xfns.c */ |
6310 | extern HANDLE interrupt_handle; | |
6311 | ||
480b0c5b GV |
6312 | /* For now, don't bother with a non-blocking mode */ |
6313 | int | |
6314 | sys_write (int fd, const void * buffer, unsigned int count) | |
6315 | { | |
6316 | int nchars; | |
6317 | ||
7559f399 | 6318 | if (fd < 0) |
480b0c5b GV |
6319 | { |
6320 | errno = EBADF; | |
6321 | return -1; | |
6322 | } | |
6323 | ||
d888760c | 6324 | if (fd < MAXDESC && fd_info[fd].flags & (FILE_PIPE | FILE_SOCKET | FILE_SERIAL)) |
76b3903d GV |
6325 | { |
6326 | if ((fd_info[fd].flags & FILE_WRITE) == 0) | |
6327 | { | |
6328 | errno = EBADF; | |
6329 | return -1; | |
6330 | } | |
6331 | ||
6332 | /* Perform text mode translation if required. */ | |
6333 | if ((fd_info[fd].flags & FILE_BINARY) == 0) | |
6334 | { | |
6335 | char * tmpbuf = alloca (count * 2); | |
6336 | unsigned char * src = (void *)buffer; | |
6337 | unsigned char * dst = tmpbuf; | |
6338 | int nbytes = count; | |
6339 | ||
6340 | while (1) | |
6341 | { | |
6342 | unsigned char *next; | |
6343 | /* copy next line or remaining bytes */ | |
6344 | next = _memccpy (dst, src, '\n', nbytes); | |
6345 | if (next) | |
6346 | { | |
6347 | /* copied one line ending with '\n' */ | |
6348 | int copied = next - dst; | |
6349 | nbytes -= copied; | |
6350 | src += copied; | |
6351 | /* insert '\r' before '\n' */ | |
6352 | next[-1] = '\r'; | |
6353 | next[0] = '\n'; | |
6354 | dst = next + 1; | |
6355 | count++; | |
177c0ea7 | 6356 | } |
76b3903d GV |
6357 | else |
6358 | /* copied remaining partial line -> now finished */ | |
6359 | break; | |
6360 | } | |
6361 | buffer = tmpbuf; | |
6362 | } | |
6363 | } | |
6364 | ||
d888760c GM |
6365 | if (fd < MAXDESC && fd_info[fd].flags & FILE_SERIAL) |
6366 | { | |
6367 | HANDLE hnd = (HANDLE) _get_osfhandle (fd); | |
6368 | OVERLAPPED *ovl = &fd_info[fd].cp->ovl_write; | |
6369 | HANDLE wait_hnd[2] = { interrupt_handle, ovl->hEvent }; | |
6370 | DWORD active = 0; | |
6371 | ||
6372 | if (!WriteFile (hnd, buffer, count, (DWORD*) &nchars, ovl)) | |
6373 | { | |
6374 | if (GetLastError () != ERROR_IO_PENDING) | |
6375 | { | |
6376 | errno = EIO; | |
6377 | return -1; | |
6378 | } | |
6379 | if (detect_input_pending ()) | |
6380 | active = MsgWaitForMultipleObjects (2, wait_hnd, FALSE, INFINITE, | |
6381 | QS_ALLINPUT); | |
6382 | else | |
6383 | active = WaitForMultipleObjects (2, wait_hnd, FALSE, INFINITE); | |
6384 | if (active == WAIT_OBJECT_0) | |
6385 | { /* User pressed C-g, cancel write, then leave. Don't bother | |
6386 | cleaning up as we may only get stuck in buggy drivers. */ | |
6387 | PurgeComm (hnd, PURGE_TXABORT | PURGE_TXCLEAR); | |
6388 | CancelIo (hnd); | |
6389 | errno = EIO; | |
6390 | return -1; | |
6391 | } | |
6392 | if (active == WAIT_OBJECT_0 + 1 | |
6393 | && !GetOverlappedResult (hnd, ovl, (DWORD*) &nchars, TRUE)) | |
6394 | { | |
6395 | errno = EIO; | |
6396 | return -1; | |
6397 | } | |
6398 | } | |
6399 | } | |
7d701334 | 6400 | else if (fd < MAXDESC && fd_info[fd].flags & FILE_SOCKET) |
480b0c5b | 6401 | { |
30a32e0e | 6402 | unsigned long nblock = 0; |
1088b922 | 6403 | if (winsock_lib == NULL) emacs_abort (); |
30a32e0e JR |
6404 | |
6405 | /* TODO: implement select() properly so non-blocking I/O works. */ | |
6406 | /* For now, make sure the write blocks. */ | |
6407 | if (fd_info[fd].flags & FILE_NDELAY) | |
6408 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONBIO, &nblock); | |
6409 | ||
480b0c5b | 6410 | nchars = pfn_send (SOCK_HANDLE (fd), buffer, count, 0); |
30a32e0e JR |
6411 | |
6412 | /* Set the socket back to non-blocking if it was before, | |
6413 | for other operations that support it. */ | |
6414 | if (fd_info[fd].flags & FILE_NDELAY) | |
6415 | { | |
6416 | nblock = 1; | |
6417 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONBIO, &nblock); | |
6418 | } | |
6419 | ||
480b0c5b GV |
6420 | if (nchars == SOCKET_ERROR) |
6421 | { | |
ed3751c8 JB |
6422 | DebPrint (("sys_write.send failed with error %d on socket %ld\n", |
6423 | pfn_WSAGetLastError (), SOCK_HANDLE (fd))); | |
480b0c5b GV |
6424 | set_errno (); |
6425 | } | |
6426 | } | |
6427 | else | |
6e83d800 EZ |
6428 | { |
6429 | /* Some networked filesystems don't like too large writes, so | |
6430 | break them into smaller chunks. See the Comments section of | |
6431 | the MSDN documentation of WriteFile for details behind the | |
6432 | choice of the value of CHUNK below. See also the thread | |
6433 | http://thread.gmane.org/gmane.comp.version-control.git/145294 | |
6434 | in the git mailing list. */ | |
6435 | const unsigned char *p = buffer; | |
6436 | const unsigned chunk = 30 * 1024 * 1024; | |
6437 | ||
6438 | nchars = 0; | |
6439 | while (count > 0) | |
6440 | { | |
6441 | unsigned this_chunk = count < chunk ? count : chunk; | |
6442 | int n = _write (fd, p, this_chunk); | |
6443 | ||
6444 | nchars += n; | |
6445 | if (n < 0) | |
6446 | { | |
6447 | nchars = n; | |
6448 | break; | |
6449 | } | |
6450 | else if (n < this_chunk) | |
6451 | break; | |
6452 | count -= n; | |
6453 | p += n; | |
6454 | } | |
6455 | } | |
480b0c5b GV |
6456 | |
6457 | return nchars; | |
6458 | } | |
6459 | ||
97a93095 EZ |
6460 | /* The Windows CRT functions are "optimized for speed", so they don't |
6461 | check for timezone and DST changes if they were last called less | |
6462 | than 1 minute ago (see http://support.microsoft.com/kb/821231). So | |
6463 | all Emacs features that repeatedly call time functions (e.g., | |
6464 | display-time) are in real danger of missing timezone and DST | |
6465 | changes. Calling tzset before each localtime call fixes that. */ | |
6466 | struct tm * | |
6467 | sys_localtime (const time_t *t) | |
6468 | { | |
6469 | tzset (); | |
6470 | return localtime (t); | |
6471 | } | |
6472 | ||
0898ca10 JB |
6473 | |
6474 | \f | |
d07ff9db CY |
6475 | /* Try loading LIBRARY_ID from the file(s) specified in |
6476 | Vdynamic_library_alist. If the library is loaded successfully, | |
6477 | return the handle of the DLL, and record the filename in the | |
6478 | property :loaded-from of LIBRARY_ID. If the library could not be | |
6479 | found, or when it was already loaded (because the handle is not | |
6480 | recorded anywhere, and so is lost after use), return NULL. | |
6481 | ||
6482 | We could also save the handle in :loaded-from, but currently | |
6483 | there's no use case for it. */ | |
0898ca10 | 6484 | HMODULE |
d07ff9db | 6485 | w32_delayed_load (Lisp_Object library_id) |
0898ca10 JB |
6486 | { |
6487 | HMODULE library_dll = NULL; | |
6488 | ||
6489 | CHECK_SYMBOL (library_id); | |
6490 | ||
d07ff9db CY |
6491 | if (CONSP (Vdynamic_library_alist) |
6492 | && NILP (Fassq (library_id, Vlibrary_cache))) | |
0898ca10 JB |
6493 | { |
6494 | Lisp_Object found = Qnil; | |
d07ff9db | 6495 | Lisp_Object dlls = Fassq (library_id, Vdynamic_library_alist); |
0898ca10 JB |
6496 | |
6497 | if (CONSP (dlls)) | |
6498 | for (dlls = XCDR (dlls); CONSP (dlls); dlls = XCDR (dlls)) | |
6499 | { | |
6500 | CHECK_STRING_CAR (dlls); | |
657d08d3 | 6501 | if ((library_dll = LoadLibrary (SDATA (XCAR (dlls))))) |
0898ca10 | 6502 | { |
2a8ce227 JB |
6503 | char name[MAX_PATH]; |
6504 | DWORD len; | |
6505 | ||
6506 | len = GetModuleFileNameA (library_dll, name, sizeof (name)); | |
6507 | found = Fcons (XCAR (dlls), | |
6508 | (len > 0) | |
6509 | /* Possibly truncated */ | |
6510 | ? make_specified_string (name, -1, len, 1) | |
6511 | : Qnil); | |
0898ca10 JB |
6512 | break; |
6513 | } | |
6514 | } | |
6515 | ||
6516 | Fput (library_id, QCloaded_from, found); | |
6517 | } | |
6518 | ||
6519 | return library_dll; | |
6520 | } | |
6521 | ||
6522 | \f | |
76151e2c | 6523 | void |
b56ceb92 | 6524 | check_windows_init_file (void) |
f52eb3ef | 6525 | { |
f52eb3ef GV |
6526 | /* A common indication that Emacs is not installed properly is when |
6527 | it cannot find the Windows installation file. If this file does | |
6528 | not exist in the expected place, tell the user. */ | |
6529 | ||
c7aa8333 EZ |
6530 | if (!noninteractive && !inhibit_window_system |
6531 | /* Vload_path is not yet initialized when we are loading | |
6532 | loadup.el. */ | |
6533 | && NILP (Vpurify_flag)) | |
d54abccd | 6534 | { |
d54abccd GV |
6535 | Lisp_Object init_file; |
6536 | int fd; | |
f52eb3ef | 6537 | |
d54abccd | 6538 | init_file = build_string ("term/w32-win"); |
76151e2c | 6539 | fd = openp (Vload_path, init_file, Fget_load_suffixes (), NULL, Qnil); |
177c0ea7 | 6540 | if (fd < 0) |
d54abccd | 6541 | { |
76151e2c | 6542 | Lisp_Object load_path_print = Fprin1_to_string (Vload_path, Qnil); |
d5db4077 KR |
6543 | char *init_file_name = SDATA (init_file); |
6544 | char *load_path = SDATA (load_path_print); | |
acc23b87 KS |
6545 | char *buffer = alloca (1024 |
6546 | + strlen (init_file_name) | |
6547 | + strlen (load_path)); | |
d54abccd | 6548 | |
177c0ea7 | 6549 | sprintf (buffer, |
d54abccd GV |
6550 | "The Emacs Windows initialization file \"%s.el\" " |
6551 | "could not be found in your Emacs installation. " | |
6552 | "Emacs checked the following directories for this file:\n" | |
6553 | "\n%s\n\n" | |
6554 | "When Emacs cannot find this file, it usually means that it " | |
6555 | "was not installed properly, or its distribution file was " | |
6556 | "not unpacked properly.\nSee the README.W32 file in the " | |
6557 | "top-level Emacs directory for more information.", | |
6558 | init_file_name, load_path); | |
6559 | MessageBox (NULL, | |
6560 | buffer, | |
6561 | "Emacs Abort Dialog", | |
6562 | MB_OK | MB_ICONEXCLAMATION | MB_TASKMODAL); | |
1088b922 | 6563 | /* Use the low-level system abort. */ |
d54abccd GV |
6564 | abort (); |
6565 | } | |
6566 | else | |
6567 | { | |
a302c7ae | 6568 | _close (fd); |
d54abccd | 6569 | } |
f52eb3ef | 6570 | } |
f52eb3ef | 6571 | } |
480b0c5b GV |
6572 | |
6573 | void | |
16b22fef | 6574 | term_ntproc (int ignored) |
480b0c5b | 6575 | { |
16b22fef | 6576 | (void)ignored; |
c06c382a EZ |
6577 | |
6578 | term_timers (); | |
6579 | ||
480b0c5b GV |
6580 | /* shutdown the socket interface if necessary */ |
6581 | term_winsock (); | |
52c7f9ee JR |
6582 | |
6583 | term_w32select (); | |
480b0c5b GV |
6584 | } |
6585 | ||
6586 | void | |
16b22fef | 6587 | init_ntproc (int dumping) |
480b0c5b | 6588 | { |
c06c382a EZ |
6589 | sigset_t initial_mask = 0; |
6590 | ||
e1dbe924 | 6591 | /* Initialize the socket interface now if available and requested by |
f249a012 | 6592 | the user by defining PRELOAD_WINSOCK; otherwise loading will be |
fbd6baed | 6593 | delayed until open-network-stream is called (w32-has-winsock can |
f249a012 RS |
6594 | also be used to dynamically load or reload winsock). |
6595 | ||
6596 | Conveniently, init_environment is called before us, so | |
6597 | PRELOAD_WINSOCK can be set in the registry. */ | |
6598 | ||
6599 | /* Always initialize this correctly. */ | |
6600 | winsock_lib = NULL; | |
6601 | ||
6602 | if (getenv ("PRELOAD_WINSOCK") != NULL) | |
6603 | init_winsock (TRUE); | |
480b0c5b GV |
6604 | |
6605 | /* Initial preparation for subprocess support: replace our standard | |
6606 | handles with non-inheritable versions. */ | |
6607 | { | |
6608 | HANDLE parent; | |
6609 | HANDLE stdin_save = INVALID_HANDLE_VALUE; | |
6610 | HANDLE stdout_save = INVALID_HANDLE_VALUE; | |
6611 | HANDLE stderr_save = INVALID_HANDLE_VALUE; | |
6612 | ||
6613 | parent = GetCurrentProcess (); | |
6614 | ||
6615 | /* ignore errors when duplicating and closing; typically the | |
6616 | handles will be invalid when running as a gui program. */ | |
177c0ea7 JB |
6617 | DuplicateHandle (parent, |
6618 | GetStdHandle (STD_INPUT_HANDLE), | |
480b0c5b | 6619 | parent, |
177c0ea7 JB |
6620 | &stdin_save, |
6621 | 0, | |
6622 | FALSE, | |
480b0c5b | 6623 | DUPLICATE_SAME_ACCESS); |
177c0ea7 | 6624 | |
480b0c5b GV |
6625 | DuplicateHandle (parent, |
6626 | GetStdHandle (STD_OUTPUT_HANDLE), | |
6627 | parent, | |
6628 | &stdout_save, | |
6629 | 0, | |
6630 | FALSE, | |
6631 | DUPLICATE_SAME_ACCESS); | |
177c0ea7 | 6632 | |
480b0c5b GV |
6633 | DuplicateHandle (parent, |
6634 | GetStdHandle (STD_ERROR_HANDLE), | |
6635 | parent, | |
6636 | &stderr_save, | |
6637 | 0, | |
6638 | FALSE, | |
6639 | DUPLICATE_SAME_ACCESS); | |
177c0ea7 | 6640 | |
480b0c5b GV |
6641 | fclose (stdin); |
6642 | fclose (stdout); | |
6643 | fclose (stderr); | |
6644 | ||
6645 | if (stdin_save != INVALID_HANDLE_VALUE) | |
62aba0d4 | 6646 | _open_osfhandle ((intptr_t) stdin_save, O_TEXT); |
480b0c5b | 6647 | else |
76b3903d GV |
6648 | _open ("nul", O_TEXT | O_NOINHERIT | O_RDONLY); |
6649 | _fdopen (0, "r"); | |
480b0c5b GV |
6650 | |
6651 | if (stdout_save != INVALID_HANDLE_VALUE) | |
62aba0d4 | 6652 | _open_osfhandle ((intptr_t) stdout_save, O_TEXT); |
480b0c5b | 6653 | else |
76b3903d GV |
6654 | _open ("nul", O_TEXT | O_NOINHERIT | O_WRONLY); |
6655 | _fdopen (1, "w"); | |
480b0c5b GV |
6656 | |
6657 | if (stderr_save != INVALID_HANDLE_VALUE) | |
62aba0d4 | 6658 | _open_osfhandle ((intptr_t) stderr_save, O_TEXT); |
480b0c5b | 6659 | else |
76b3903d GV |
6660 | _open ("nul", O_TEXT | O_NOINHERIT | O_WRONLY); |
6661 | _fdopen (2, "w"); | |
480b0c5b GV |
6662 | } |
6663 | ||
6664 | /* unfortunately, atexit depends on implementation of malloc */ | |
6665 | /* atexit (term_ntproc); */ | |
16b22fef | 6666 | if (!dumping) |
c06c382a EZ |
6667 | { |
6668 | /* Make sure we start with all signals unblocked. */ | |
6669 | sigprocmask (SIG_SETMASK, &initial_mask, NULL); | |
6670 | signal (SIGABRT, term_ntproc); | |
6671 | } | |
6672 | init_timers (); | |
76b3903d GV |
6673 | |
6674 | /* determine which drives are fixed, for GetCachedVolumeInformation */ | |
6675 | { | |
6676 | /* GetDriveType must have trailing backslash. */ | |
6677 | char drive[] = "A:\\"; | |
6678 | ||
6679 | /* Loop over all possible drive letters */ | |
6680 | while (*drive <= 'Z') | |
6681 | { | |
6682 | /* Record if this drive letter refers to a fixed drive. */ | |
177c0ea7 | 6683 | fixed_drives[DRIVE_INDEX (*drive)] = |
76b3903d GV |
6684 | (GetDriveType (drive) == DRIVE_FIXED); |
6685 | ||
6686 | (*drive)++; | |
6687 | } | |
a302c7ae AI |
6688 | |
6689 | /* Reset the volume info cache. */ | |
6690 | volume_cache = NULL; | |
76b3903d | 6691 | } |
480b0c5b GV |
6692 | } |
6693 | ||
a8c3a596 JR |
6694 | /* |
6695 | shutdown_handler ensures that buffers' autosave files are | |
6696 | up to date when the user logs off, or the system shuts down. | |
6697 | */ | |
bedf4aab | 6698 | static BOOL WINAPI |
ed3751c8 | 6699 | shutdown_handler (DWORD type) |
a8c3a596 JR |
6700 | { |
6701 | /* Ctrl-C and Ctrl-Break are already suppressed, so don't handle them. */ | |
6702 | if (type == CTRL_CLOSE_EVENT /* User closes console window. */ | |
6703 | || type == CTRL_LOGOFF_EVENT /* User logs off. */ | |
6704 | || type == CTRL_SHUTDOWN_EVENT) /* User shutsdown. */ | |
6705 | { | |
6706 | /* Shut down cleanly, making sure autosave files are up to date. */ | |
1882aa38 | 6707 | shut_down_emacs (0, Qnil); |
a8c3a596 JR |
6708 | } |
6709 | ||
7046f191 | 6710 | /* Allow other handlers to handle this signal. */ |
a8c3a596 JR |
6711 | return FALSE; |
6712 | } | |
6713 | ||
9785d95b BK |
6714 | /* |
6715 | globals_of_w32 is used to initialize those global variables that | |
6716 | must always be initialized on startup even when the global variable | |
6717 | initialized is non zero (see the function main in emacs.c). | |
6718 | */ | |
9bfb11f9 | 6719 | void |
b56ceb92 | 6720 | globals_of_w32 (void) |
9785d95b | 6721 | { |
74258518 JR |
6722 | HMODULE kernel32 = GetModuleHandle ("kernel32.dll"); |
6723 | ||
6724 | get_process_times_fn = (GetProcessTimes_Proc) | |
6725 | GetProcAddress (kernel32, "GetProcessTimes"); | |
6726 | ||
cd3520a4 | 6727 | DEFSYM (QCloaded_from, ":loaded-from"); |
0898ca10 | 6728 | |
9785d95b BK |
6729 | g_b_init_is_windows_9x = 0; |
6730 | g_b_init_open_process_token = 0; | |
6731 | g_b_init_get_token_information = 0; | |
6732 | g_b_init_lookup_account_sid = 0; | |
9d95a291 EZ |
6733 | g_b_init_get_sid_sub_authority = 0; |
6734 | g_b_init_get_sid_sub_authority_count = 0; | |
6dad7178 | 6735 | g_b_init_get_security_info = 0; |
8aaaec6b EZ |
6736 | g_b_init_get_file_security = 0; |
6737 | g_b_init_get_security_descriptor_owner = 0; | |
6738 | g_b_init_get_security_descriptor_group = 0; | |
6739 | g_b_init_is_valid_sid = 0; | |
7c80d5ec EZ |
6740 | g_b_init_create_toolhelp32_snapshot = 0; |
6741 | g_b_init_process32_first = 0; | |
6742 | g_b_init_process32_next = 0; | |
6743 | g_b_init_open_thread_token = 0; | |
6744 | g_b_init_impersonate_self = 0; | |
6745 | g_b_init_revert_to_self = 0; | |
6746 | g_b_init_get_process_memory_info = 0; | |
6747 | g_b_init_get_process_working_set_size = 0; | |
6748 | g_b_init_global_memory_status = 0; | |
6749 | g_b_init_global_memory_status_ex = 0; | |
f8b35b24 EZ |
6750 | g_b_init_equal_sid = 0; |
6751 | g_b_init_copy_sid = 0; | |
6752 | g_b_init_get_length_sid = 0; | |
ad9e2d54 EZ |
6753 | g_b_init_get_native_system_info = 0; |
6754 | g_b_init_get_system_times = 0; | |
6dad7178 | 6755 | g_b_init_create_symbolic_link = 0; |
ad9e2d54 | 6756 | num_of_processors = 0; |
a8c3a596 JR |
6757 | /* The following sets a handler for shutdown notifications for |
6758 | console apps. This actually applies to Emacs in both console and | |
6759 | GUI modes, since we had to fool windows into thinking emacs is a | |
6760 | console application to get console mode to work. */ | |
ed3751c8 | 6761 | SetConsoleCtrlHandler (shutdown_handler, TRUE); |
8aaaec6b EZ |
6762 | |
6763 | /* "None" is the default group name on standalone workstations. */ | |
6764 | strcpy (dflt_group_name, "None"); | |
9785d95b BK |
6765 | } |
6766 | ||
d888760c | 6767 | /* For make-serial-process */ |
b56ceb92 JB |
6768 | int |
6769 | serial_open (char *port) | |
d888760c GM |
6770 | { |
6771 | HANDLE hnd; | |
6772 | child_process *cp; | |
6773 | int fd = -1; | |
6774 | ||
6775 | hnd = CreateFile (port, GENERIC_READ | GENERIC_WRITE, 0, 0, | |
6776 | OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0); | |
6777 | if (hnd == INVALID_HANDLE_VALUE) | |
6778 | error ("Could not open %s", port); | |
62aba0d4 | 6779 | fd = (int) _open_osfhandle ((intptr_t) hnd, 0); |
d888760c GM |
6780 | if (fd == -1) |
6781 | error ("Could not open %s", port); | |
6782 | ||
6783 | cp = new_child (); | |
6784 | if (!cp) | |
6785 | error ("Could not create child process"); | |
6786 | cp->fd = fd; | |
6787 | cp->status = STATUS_READ_ACKNOWLEDGED; | |
6788 | fd_info[ fd ].hnd = hnd; | |
6789 | fd_info[ fd ].flags |= | |
6790 | FILE_READ | FILE_WRITE | FILE_BINARY | FILE_SERIAL; | |
6791 | if (fd_info[ fd ].cp != NULL) | |
6792 | { | |
6793 | error ("fd_info[fd = %d] is already in use", fd); | |
6794 | } | |
6795 | fd_info[ fd ].cp = cp; | |
6796 | cp->ovl_read.hEvent = CreateEvent (NULL, TRUE, FALSE, NULL); | |
6797 | if (cp->ovl_read.hEvent == NULL) | |
6798 | error ("Could not create read event"); | |
6799 | cp->ovl_write.hEvent = CreateEvent (NULL, TRUE, FALSE, NULL); | |
6800 | if (cp->ovl_write.hEvent == NULL) | |
6801 | error ("Could not create write event"); | |
6802 | ||
6803 | return fd; | |
6804 | } | |
6805 | ||
6806 | /* For serial-process-configure */ | |
6807 | void | |
9d4f32e8 | 6808 | serial_configure (struct Lisp_Process *p, Lisp_Object contact) |
d888760c GM |
6809 | { |
6810 | Lisp_Object childp2 = Qnil; | |
6811 | Lisp_Object tem = Qnil; | |
6812 | HANDLE hnd; | |
6813 | DCB dcb; | |
6814 | COMMTIMEOUTS ct; | |
6815 | char summary[4] = "???"; /* This usually becomes "8N1". */ | |
6816 | ||
6817 | if ((fd_info[ p->outfd ].flags & FILE_SERIAL) == 0) | |
6818 | error ("Not a serial process"); | |
6819 | hnd = fd_info[ p->outfd ].hnd; | |
6820 | ||
4d2b044c | 6821 | childp2 = Fcopy_sequence (p->childp); |
d888760c GM |
6822 | |
6823 | /* Initialize timeouts for blocking read and blocking write. */ | |
6824 | if (!GetCommTimeouts (hnd, &ct)) | |
6825 | error ("GetCommTimeouts() failed"); | |
6826 | ct.ReadIntervalTimeout = 0; | |
6827 | ct.ReadTotalTimeoutMultiplier = 0; | |
6828 | ct.ReadTotalTimeoutConstant = 0; | |
6829 | ct.WriteTotalTimeoutMultiplier = 0; | |
6830 | ct.WriteTotalTimeoutConstant = 0; | |
6831 | if (!SetCommTimeouts (hnd, &ct)) | |
6832 | error ("SetCommTimeouts() failed"); | |
6833 | /* Read port attributes and prepare default configuration. */ | |
6834 | memset (&dcb, 0, sizeof (dcb)); | |
6835 | dcb.DCBlength = sizeof (DCB); | |
6836 | if (!GetCommState (hnd, &dcb)) | |
6837 | error ("GetCommState() failed"); | |
6838 | dcb.fBinary = TRUE; | |
6839 | dcb.fNull = FALSE; | |
6840 | dcb.fAbortOnError = FALSE; | |
6841 | /* dcb.XonLim and dcb.XoffLim are set by GetCommState() */ | |
6842 | dcb.ErrorChar = 0; | |
6843 | dcb.EofChar = 0; | |
6844 | dcb.EvtChar = 0; | |
6845 | ||
6846 | /* Configure speed. */ | |
6847 | if (!NILP (Fplist_member (contact, QCspeed))) | |
6848 | tem = Fplist_get (contact, QCspeed); | |
6849 | else | |
4d2b044c | 6850 | tem = Fplist_get (p->childp, QCspeed); |
d888760c GM |
6851 | CHECK_NUMBER (tem); |
6852 | dcb.BaudRate = XINT (tem); | |
6853 | childp2 = Fplist_put (childp2, QCspeed, tem); | |
6854 | ||
6855 | /* Configure bytesize. */ | |
6856 | if (!NILP (Fplist_member (contact, QCbytesize))) | |
6857 | tem = Fplist_get (contact, QCbytesize); | |
6858 | else | |
4d2b044c | 6859 | tem = Fplist_get (p->childp, QCbytesize); |
d888760c GM |
6860 | if (NILP (tem)) |
6861 | tem = make_number (8); | |
6862 | CHECK_NUMBER (tem); | |
6863 | if (XINT (tem) != 7 && XINT (tem) != 8) | |
6864 | error (":bytesize must be nil (8), 7, or 8"); | |
6865 | dcb.ByteSize = XINT (tem); | |
6866 | summary[0] = XINT (tem) + '0'; | |
6867 | childp2 = Fplist_put (childp2, QCbytesize, tem); | |
6868 | ||
6869 | /* Configure parity. */ | |
6870 | if (!NILP (Fplist_member (contact, QCparity))) | |
6871 | tem = Fplist_get (contact, QCparity); | |
6872 | else | |
4d2b044c | 6873 | tem = Fplist_get (p->childp, QCparity); |
d888760c GM |
6874 | if (!NILP (tem) && !EQ (tem, Qeven) && !EQ (tem, Qodd)) |
6875 | error (":parity must be nil (no parity), `even', or `odd'"); | |
6876 | dcb.fParity = FALSE; | |
6877 | dcb.Parity = NOPARITY; | |
6878 | dcb.fErrorChar = FALSE; | |
6879 | if (NILP (tem)) | |
6880 | { | |
6881 | summary[1] = 'N'; | |
6882 | } | |
6883 | else if (EQ (tem, Qeven)) | |
6884 | { | |
6885 | summary[1] = 'E'; | |
6886 | dcb.fParity = TRUE; | |
6887 | dcb.Parity = EVENPARITY; | |
6888 | dcb.fErrorChar = TRUE; | |
6889 | } | |
6890 | else if (EQ (tem, Qodd)) | |
6891 | { | |
6892 | summary[1] = 'O'; | |
6893 | dcb.fParity = TRUE; | |
6894 | dcb.Parity = ODDPARITY; | |
6895 | dcb.fErrorChar = TRUE; | |
6896 | } | |
6897 | childp2 = Fplist_put (childp2, QCparity, tem); | |
6898 | ||
6899 | /* Configure stopbits. */ | |
6900 | if (!NILP (Fplist_member (contact, QCstopbits))) | |
6901 | tem = Fplist_get (contact, QCstopbits); | |
6902 | else | |
4d2b044c | 6903 | tem = Fplist_get (p->childp, QCstopbits); |
d888760c GM |
6904 | if (NILP (tem)) |
6905 | tem = make_number (1); | |
6906 | CHECK_NUMBER (tem); | |
6907 | if (XINT (tem) != 1 && XINT (tem) != 2) | |
6908 | error (":stopbits must be nil (1 stopbit), 1, or 2"); | |
6909 | summary[2] = XINT (tem) + '0'; | |
6910 | if (XINT (tem) == 1) | |
6911 | dcb.StopBits = ONESTOPBIT; | |
6912 | else if (XINT (tem) == 2) | |
6913 | dcb.StopBits = TWOSTOPBITS; | |
6914 | childp2 = Fplist_put (childp2, QCstopbits, tem); | |
6915 | ||
6916 | /* Configure flowcontrol. */ | |
6917 | if (!NILP (Fplist_member (contact, QCflowcontrol))) | |
6918 | tem = Fplist_get (contact, QCflowcontrol); | |
6919 | else | |
4d2b044c | 6920 | tem = Fplist_get (p->childp, QCflowcontrol); |
d888760c GM |
6921 | if (!NILP (tem) && !EQ (tem, Qhw) && !EQ (tem, Qsw)) |
6922 | error (":flowcontrol must be nil (no flowcontrol), `hw', or `sw'"); | |
6923 | dcb.fOutxCtsFlow = FALSE; | |
6924 | dcb.fOutxDsrFlow = FALSE; | |
6925 | dcb.fDtrControl = DTR_CONTROL_DISABLE; | |
6926 | dcb.fDsrSensitivity = FALSE; | |
6927 | dcb.fTXContinueOnXoff = FALSE; | |
6928 | dcb.fOutX = FALSE; | |
6929 | dcb.fInX = FALSE; | |
6930 | dcb.fRtsControl = RTS_CONTROL_DISABLE; | |
6931 | dcb.XonChar = 17; /* Control-Q */ | |
6932 | dcb.XoffChar = 19; /* Control-S */ | |
6933 | if (NILP (tem)) | |
6934 | { | |
6935 | /* Already configured. */ | |
6936 | } | |
6937 | else if (EQ (tem, Qhw)) | |
6938 | { | |
6939 | dcb.fRtsControl = RTS_CONTROL_HANDSHAKE; | |
6940 | dcb.fOutxCtsFlow = TRUE; | |
6941 | } | |
6942 | else if (EQ (tem, Qsw)) | |
6943 | { | |
6944 | dcb.fOutX = TRUE; | |
6945 | dcb.fInX = TRUE; | |
6946 | } | |
6947 | childp2 = Fplist_put (childp2, QCflowcontrol, tem); | |
6948 | ||
6949 | /* Activate configuration. */ | |
6950 | if (!SetCommState (hnd, &dcb)) | |
6951 | error ("SetCommState() failed"); | |
6952 | ||
6953 | childp2 = Fplist_put (childp2, QCsummary, build_string (summary)); | |
6a09a33b | 6954 | pset_childp (p, childp2); |
d888760c GM |
6955 | } |
6956 | ||
e061a11b TZ |
6957 | #ifdef HAVE_GNUTLS |
6958 | ||
6959 | ssize_t | |
6960 | emacs_gnutls_pull (gnutls_transport_ptr_t p, void* buf, size_t sz) | |
6961 | { | |
6962 | int n, sc, err; | |
6963 | SELECT_TYPE fdset; | |
d35af63c | 6964 | struct timeval timeout; |
e061a11b TZ |
6965 | struct Lisp_Process *process = (struct Lisp_Process *)p; |
6966 | int fd = process->infd; | |
6967 | ||
6968 | for (;;) | |
6969 | { | |
5e617bc2 | 6970 | n = sys_read (fd, (char*)buf, sz); |
e061a11b TZ |
6971 | |
6972 | if (n >= 0) | |
6973 | return n; | |
6974 | ||
6975 | err = errno; | |
6976 | ||
6977 | if (err == EWOULDBLOCK) | |
6978 | { | |
6979 | /* Set a small timeout. */ | |
d35af63c PE |
6980 | timeout.tv_sec = 1; |
6981 | timeout.tv_usec = 0; | |
e061a11b TZ |
6982 | FD_ZERO (&fdset); |
6983 | FD_SET ((int)fd, &fdset); | |
6984 | ||
6985 | /* Use select with the timeout to poll the selector. */ | |
6986 | sc = select (fd + 1, &fdset, (SELECT_TYPE *)0, (SELECT_TYPE *)0, | |
c9240d7a | 6987 | &timeout, NULL); |
e061a11b TZ |
6988 | |
6989 | if (sc > 0) | |
6990 | continue; /* Try again. */ | |
6991 | ||
6992 | /* Translate the WSAEWOULDBLOCK alias EWOULDBLOCK to EAGAIN. | |
6993 | Also accept select return 0 as an indicator to EAGAIN. */ | |
6994 | if (sc == 0 || errno == EWOULDBLOCK) | |
6995 | err = EAGAIN; | |
6996 | else | |
6997 | err = errno; /* Other errors are just passed on. */ | |
6998 | } | |
6999 | ||
0898ca10 | 7000 | emacs_gnutls_transport_set_errno (process->gnutls_state, err); |
e061a11b TZ |
7001 | |
7002 | return -1; | |
7003 | } | |
7004 | } | |
ab5796a9 | 7005 | |
e061a11b TZ |
7006 | ssize_t |
7007 | emacs_gnutls_push (gnutls_transport_ptr_t p, const void* buf, size_t sz) | |
7008 | { | |
7009 | struct Lisp_Process *process = (struct Lisp_Process *)p; | |
42ce4c63 | 7010 | int fd = process->outfd; |
5e617bc2 | 7011 | ssize_t n = sys_write (fd, buf, sz); |
e061a11b TZ |
7012 | |
7013 | /* 0 or more bytes written means everything went fine. */ | |
7014 | if (n >= 0) | |
7015 | return n; | |
7016 | ||
7017 | /* Negative bytes written means we got an error in errno. | |
7018 | Translate the WSAEWOULDBLOCK alias EWOULDBLOCK to EAGAIN. */ | |
0898ca10 JB |
7019 | emacs_gnutls_transport_set_errno (process->gnutls_state, |
7020 | errno == EWOULDBLOCK ? EAGAIN : errno); | |
e061a11b TZ |
7021 | |
7022 | return -1; | |
7023 | } | |
7024 | #endif /* HAVE_GNUTLS */ | |
7025 | ||
7026 | /* end of w32.c */ |