Commit | Line | Data |
---|---|---|
e9e23e23 | 1 | /* Utility and Unix shadow routines for GNU Emacs on the Microsoft W32 API. |
73b0cd50 | 2 | Copyright (C) 1994-1995, 2000-2011 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> |
22189f79 | 34 | #include <mbstring.h> /* for _mbspbrk */ |
7c80d5ec | 35 | #include <math.h> |
d7306fe6 | 36 | #include <setjmp.h> |
97a93095 | 37 | #include <time.h> |
480b0c5b GV |
38 | |
39 | /* must include CRT headers *before* config.h */ | |
4838e624 | 40 | |
4838e624 | 41 | #include <config.h> |
4838e624 | 42 | |
480b0c5b GV |
43 | #undef access |
44 | #undef chdir | |
45 | #undef chmod | |
46 | #undef creat | |
47 | #undef ctime | |
48 | #undef fopen | |
49 | #undef link | |
50 | #undef mkdir | |
51 | #undef mktemp | |
52 | #undef open | |
53 | #undef rename | |
54 | #undef rmdir | |
55 | #undef unlink | |
56 | ||
57 | #undef close | |
58 | #undef dup | |
59 | #undef dup2 | |
60 | #undef pipe | |
61 | #undef read | |
62 | #undef write | |
95ed0025 | 63 | |
d8fcc1b9 AI |
64 | #undef strerror |
65 | ||
97a93095 EZ |
66 | #undef localtime |
67 | ||
95ed0025 | 68 | #include "lisp.h" |
95ed0025 RS |
69 | |
70 | #include <pwd.h> | |
3d19b645 | 71 | #include <grp.h> |
95ed0025 | 72 | |
971bce75 AI |
73 | #ifdef __GNUC__ |
74 | #define _ANONYMOUS_UNION | |
75 | #define _ANONYMOUS_STRUCT | |
76 | #endif | |
480b0c5b | 77 | #include <windows.h> |
b8526f6e EZ |
78 | /* Some versions of compiler define MEMORYSTATUSEX, some don't, so we |
79 | use a different name to avoid compilation problems. */ | |
80 | typedef struct _MEMORY_STATUS_EX { | |
bedf4aab JB |
81 | DWORD dwLength; |
82 | DWORD dwMemoryLoad; | |
83 | DWORDLONG ullTotalPhys; | |
84 | DWORDLONG ullAvailPhys; | |
85 | DWORDLONG ullTotalPageFile; | |
86 | DWORDLONG ullAvailPageFile; | |
87 | DWORDLONG ullTotalVirtual; | |
88 | DWORDLONG ullAvailVirtual; | |
89 | DWORDLONG ullAvailExtendedVirtual; | |
b8526f6e | 90 | } MEMORY_STATUS_EX,*LPMEMORY_STATUS_EX; |
7c80d5ec | 91 | |
634d3003 | 92 | #include <lmcons.h> |
2d5324c5 | 93 | #include <shlobj.h> |
00b3b7b3 | 94 | |
7c80d5ec EZ |
95 | #include <tlhelp32.h> |
96 | #include <psapi.h> | |
69e847be EZ |
97 | #include <w32api.h> |
98 | #if !defined(__MINGW32__) || __W32API_MAJOR_VERSION < 3 || (__W32API_MAJOR_VERSION == 3 && __W32API_MINOR_VERSION < 15) | |
7c80d5ec | 99 | /* This either is not in psapi.h or guarded by higher value of |
a6d3e72e | 100 | _WIN32_WINNT than what we use. w32api supplied with MinGW 3.15 |
69e847be | 101 | defines it in psapi.h */ |
7c80d5ec | 102 | typedef struct _PROCESS_MEMORY_COUNTERS_EX { |
bedf4aab JB |
103 | DWORD cb; |
104 | DWORD PageFaultCount; | |
105 | DWORD PeakWorkingSetSize; | |
106 | DWORD WorkingSetSize; | |
107 | DWORD QuotaPeakPagedPoolUsage; | |
108 | DWORD QuotaPagedPoolUsage; | |
109 | DWORD QuotaPeakNonPagedPoolUsage; | |
110 | DWORD QuotaNonPagedPoolUsage; | |
111 | DWORD PagefileUsage; | |
112 | DWORD PeakPagefileUsage; | |
113 | DWORD PrivateUsage; | |
7c80d5ec | 114 | } PROCESS_MEMORY_COUNTERS_EX,*PPROCESS_MEMORY_COUNTERS_EX; |
69e847be | 115 | #endif |
7c80d5ec | 116 | |
7d701334 | 117 | /* TCP connection support. */ |
480b0c5b GV |
118 | #include <sys/socket.h> |
119 | #undef socket | |
120 | #undef bind | |
121 | #undef connect | |
122 | #undef htons | |
123 | #undef ntohs | |
124 | #undef inet_addr | |
125 | #undef gethostname | |
126 | #undef gethostbyname | |
127 | #undef getservbyname | |
ecd270eb | 128 | #undef getpeername |
380961a6 | 129 | #undef shutdown |
962955c5 JR |
130 | #undef setsockopt |
131 | #undef listen | |
132 | #undef getsockname | |
133 | #undef accept | |
134 | #undef recvfrom | |
135 | #undef sendto | |
00b3b7b3 | 136 | |
489f9371 | 137 | #include "w32.h" |
480b0c5b | 138 | #include "ndir.h" |
489f9371 | 139 | #include "w32heap.h" |
253574a6 | 140 | #include "systime.h" |
f481eb31 | 141 | #include "dispextern.h" /* for xstrcasecmp */ |
7c80d5ec | 142 | #include "coding.h" /* for Vlocale_coding_system */ |
253574a6 | 143 | |
973f782d EZ |
144 | #include "careadlinkat.h" |
145 | #include "allocator.h" | |
146 | ||
1eb8fd91 | 147 | /* For serial_configure and serial_open. */ |
d888760c | 148 | #include "process.h" |
d888760c | 149 | |
2d5324c5 JR |
150 | typedef HRESULT (WINAPI * ShGetFolderPath_fn) |
151 | (IN HWND, IN int, IN HANDLE, IN DWORD, OUT char *); | |
152 | ||
0898ca10 JB |
153 | Lisp_Object QCloaded_from; |
154 | ||
b56ceb92 | 155 | void globals_of_w32 (void); |
8aaaec6b | 156 | static DWORD get_rid (PSID); |
9785d95b | 157 | |
18e070ac | 158 | \f |
9d95a291 EZ |
159 | /* Initialization states. |
160 | ||
161 | WARNING: If you add any more such variables for additional APIs, | |
162 | you MUST add initialization for them to globals_of_w32 | |
163 | below. This is because these variables might get set | |
164 | to non-NULL values during dumping, but the dumped Emacs | |
165 | cannot reuse those values, because it could be run on a | |
166 | different version of the OS, where API addresses are | |
167 | different. */ | |
9785d95b BK |
168 | static BOOL g_b_init_is_windows_9x; |
169 | static BOOL g_b_init_open_process_token; | |
170 | static BOOL g_b_init_get_token_information; | |
171 | static BOOL g_b_init_lookup_account_sid; | |
c617afce EZ |
172 | static BOOL g_b_init_get_sid_sub_authority; |
173 | static BOOL g_b_init_get_sid_sub_authority_count; | |
8aaaec6b EZ |
174 | static BOOL g_b_init_get_file_security; |
175 | static BOOL g_b_init_get_security_descriptor_owner; | |
176 | static BOOL g_b_init_get_security_descriptor_group; | |
177 | static BOOL g_b_init_is_valid_sid; | |
7c80d5ec EZ |
178 | static BOOL g_b_init_create_toolhelp32_snapshot; |
179 | static BOOL g_b_init_process32_first; | |
180 | static BOOL g_b_init_process32_next; | |
181 | static BOOL g_b_init_open_thread_token; | |
182 | static BOOL g_b_init_impersonate_self; | |
183 | static BOOL g_b_init_revert_to_self; | |
184 | static BOOL g_b_init_get_process_memory_info; | |
185 | static BOOL g_b_init_get_process_working_set_size; | |
186 | static BOOL g_b_init_global_memory_status; | |
187 | static BOOL g_b_init_global_memory_status_ex; | |
f8b35b24 EZ |
188 | static BOOL g_b_init_get_length_sid; |
189 | static BOOL g_b_init_equal_sid; | |
190 | static BOOL g_b_init_copy_sid; | |
ad9e2d54 EZ |
191 | static BOOL g_b_init_get_native_system_info; |
192 | static BOOL g_b_init_get_system_times; | |
9785d95b | 193 | |
f60ae425 BK |
194 | /* |
195 | BEGIN: Wrapper functions around OpenProcessToken | |
196 | and other functions in advapi32.dll that are only | |
197 | supported in Windows NT / 2k / XP | |
198 | */ | |
199 | /* ** Function pointer typedefs ** */ | |
200 | typedef BOOL (WINAPI * OpenProcessToken_Proc) ( | |
201 | HANDLE ProcessHandle, | |
202 | DWORD DesiredAccess, | |
203 | PHANDLE TokenHandle); | |
204 | typedef BOOL (WINAPI * GetTokenInformation_Proc) ( | |
205 | HANDLE TokenHandle, | |
206 | TOKEN_INFORMATION_CLASS TokenInformationClass, | |
207 | LPVOID TokenInformation, | |
208 | DWORD TokenInformationLength, | |
209 | PDWORD ReturnLength); | |
74258518 JR |
210 | typedef BOOL (WINAPI * GetProcessTimes_Proc) ( |
211 | HANDLE process_handle, | |
212 | LPFILETIME creation_time, | |
213 | LPFILETIME exit_time, | |
214 | LPFILETIME kernel_time, | |
215 | LPFILETIME user_time); | |
216 | ||
217 | GetProcessTimes_Proc get_process_times_fn = NULL; | |
218 | ||
f60ae425 BK |
219 | #ifdef _UNICODE |
220 | const char * const LookupAccountSid_Name = "LookupAccountSidW"; | |
8aaaec6b | 221 | const char * const GetFileSecurity_Name = "GetFileSecurityW"; |
f60ae425 BK |
222 | #else |
223 | const char * const LookupAccountSid_Name = "LookupAccountSidA"; | |
8aaaec6b | 224 | const char * const GetFileSecurity_Name = "GetFileSecurityA"; |
f60ae425 BK |
225 | #endif |
226 | typedef BOOL (WINAPI * LookupAccountSid_Proc) ( | |
227 | LPCTSTR lpSystemName, | |
228 | PSID Sid, | |
229 | LPTSTR Name, | |
230 | LPDWORD cbName, | |
231 | LPTSTR DomainName, | |
232 | LPDWORD cbDomainName, | |
233 | PSID_NAME_USE peUse); | |
c617afce EZ |
234 | typedef PDWORD (WINAPI * GetSidSubAuthority_Proc) ( |
235 | PSID pSid, | |
236 | DWORD n); | |
237 | typedef PUCHAR (WINAPI * GetSidSubAuthorityCount_Proc) ( | |
238 | PSID pSid); | |
8aaaec6b EZ |
239 | typedef BOOL (WINAPI * GetFileSecurity_Proc) ( |
240 | LPCTSTR lpFileName, | |
241 | SECURITY_INFORMATION RequestedInformation, | |
242 | PSECURITY_DESCRIPTOR pSecurityDescriptor, | |
243 | DWORD nLength, | |
244 | LPDWORD lpnLengthNeeded); | |
245 | typedef BOOL (WINAPI * GetSecurityDescriptorOwner_Proc) ( | |
246 | PSECURITY_DESCRIPTOR pSecurityDescriptor, | |
247 | PSID *pOwner, | |
248 | LPBOOL lpbOwnerDefaulted); | |
249 | typedef BOOL (WINAPI * GetSecurityDescriptorGroup_Proc) ( | |
250 | PSECURITY_DESCRIPTOR pSecurityDescriptor, | |
251 | PSID *pGroup, | |
252 | LPBOOL lpbGroupDefaulted); | |
253 | typedef BOOL (WINAPI * IsValidSid_Proc) ( | |
254 | PSID sid); | |
7c80d5ec EZ |
255 | typedef HANDLE (WINAPI * CreateToolhelp32Snapshot_Proc) ( |
256 | DWORD dwFlags, | |
257 | DWORD th32ProcessID); | |
258 | typedef BOOL (WINAPI * Process32First_Proc) ( | |
259 | HANDLE hSnapshot, | |
260 | LPPROCESSENTRY32 lppe); | |
261 | typedef BOOL (WINAPI * Process32Next_Proc) ( | |
262 | HANDLE hSnapshot, | |
263 | LPPROCESSENTRY32 lppe); | |
264 | typedef BOOL (WINAPI * OpenThreadToken_Proc) ( | |
265 | HANDLE ThreadHandle, | |
266 | DWORD DesiredAccess, | |
267 | BOOL OpenAsSelf, | |
268 | PHANDLE TokenHandle); | |
269 | typedef BOOL (WINAPI * ImpersonateSelf_Proc) ( | |
270 | SECURITY_IMPERSONATION_LEVEL ImpersonationLevel); | |
271 | typedef BOOL (WINAPI * RevertToSelf_Proc) (void); | |
272 | typedef BOOL (WINAPI * GetProcessMemoryInfo_Proc) ( | |
273 | HANDLE Process, | |
274 | PPROCESS_MEMORY_COUNTERS ppsmemCounters, | |
275 | DWORD cb); | |
276 | typedef BOOL (WINAPI * GetProcessWorkingSetSize_Proc) ( | |
277 | HANDLE hProcess, | |
278 | DWORD * lpMinimumWorkingSetSize, | |
279 | DWORD * lpMaximumWorkingSetSize); | |
280 | typedef BOOL (WINAPI * GlobalMemoryStatus_Proc) ( | |
281 | LPMEMORYSTATUS lpBuffer); | |
282 | typedef BOOL (WINAPI * GlobalMemoryStatusEx_Proc) ( | |
b8526f6e | 283 | LPMEMORY_STATUS_EX lpBuffer); |
f8b35b24 EZ |
284 | typedef BOOL (WINAPI * CopySid_Proc) ( |
285 | DWORD nDestinationSidLength, | |
286 | PSID pDestinationSid, | |
287 | PSID pSourceSid); | |
288 | typedef BOOL (WINAPI * EqualSid_Proc) ( | |
289 | PSID pSid1, | |
290 | PSID pSid2); | |
291 | typedef DWORD (WINAPI * GetLengthSid_Proc) ( | |
292 | PSID pSid); | |
ad9e2d54 EZ |
293 | typedef void (WINAPI * GetNativeSystemInfo_Proc) ( |
294 | LPSYSTEM_INFO lpSystemInfo); | |
295 | typedef BOOL (WINAPI * GetSystemTimes_Proc) ( | |
296 | LPFILETIME lpIdleTime, | |
297 | LPFILETIME lpKernelTime, | |
298 | LPFILETIME lpUserTime); | |
f8b35b24 | 299 | |
f60ae425 | 300 | /* ** A utility function ** */ |
9bfb11f9 | 301 | static BOOL |
b56ceb92 | 302 | is_windows_9x (void) |
f60ae425 | 303 | { |
bedf4aab | 304 | static BOOL s_b_ret = 0; |
f60ae425 | 305 | OSVERSIONINFO os_ver; |
9785d95b | 306 | if (g_b_init_is_windows_9x == 0) |
f60ae425 | 307 | { |
9785d95b | 308 | g_b_init_is_windows_9x = 1; |
ed3751c8 JB |
309 | ZeroMemory (&os_ver, sizeof (OSVERSIONINFO)); |
310 | os_ver.dwOSVersionInfoSize = sizeof (OSVERSIONINFO); | |
9785d95b BK |
311 | if (GetVersionEx (&os_ver)) |
312 | { | |
313 | s_b_ret = (os_ver.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS); | |
314 | } | |
f60ae425 | 315 | } |
9785d95b | 316 | return s_b_ret; |
f60ae425 BK |
317 | } |
318 | ||
74258518 JR |
319 | /* Get total user and system times for get-internal-run-time. |
320 | Returns a list of three integers if the times are provided by the OS | |
321 | (NT derivatives), otherwise it returns the result of current-time. */ | |
322 | Lisp_Object | |
b56ceb92 | 323 | w32_get_internal_run_time (void) |
74258518 JR |
324 | { |
325 | if (get_process_times_fn) | |
326 | { | |
327 | FILETIME create, exit, kernel, user; | |
ed3751c8 | 328 | HANDLE proc = GetCurrentProcess (); |
74258518 JR |
329 | if ((*get_process_times_fn) (proc, &create, &exit, &kernel, &user)) |
330 | { | |
331 | LARGE_INTEGER user_int, kernel_int, total; | |
332 | int microseconds; | |
333 | user_int.LowPart = user.dwLowDateTime; | |
334 | user_int.HighPart = user.dwHighDateTime; | |
335 | kernel_int.LowPart = kernel.dwLowDateTime; | |
336 | kernel_int.HighPart = kernel.dwHighDateTime; | |
337 | total.QuadPart = user_int.QuadPart + kernel_int.QuadPart; | |
338 | /* FILETIME is 100 nanosecond increments, Emacs only wants | |
339 | microsecond resolution. */ | |
340 | total.QuadPart /= 10; | |
341 | microseconds = total.QuadPart % 1000000; | |
342 | total.QuadPart /= 1000000; | |
343 | ||
344 | /* Sanity check to make sure we can represent the result. */ | |
345 | if (total.HighPart == 0) | |
346 | { | |
347 | int secs = total.LowPart; | |
348 | ||
349 | return list3 (make_number ((secs >> 16) & 0xffff), | |
350 | make_number (secs & 0xffff), | |
351 | make_number (microseconds)); | |
352 | } | |
353 | } | |
354 | } | |
355 | ||
356 | return Fcurrent_time (); | |
357 | } | |
358 | ||
f60ae425 BK |
359 | /* ** The wrapper functions ** */ |
360 | ||
bedf4aab JB |
361 | static BOOL WINAPI |
362 | open_process_token (HANDLE ProcessHandle, | |
363 | DWORD DesiredAccess, | |
364 | PHANDLE TokenHandle) | |
f60ae425 | 365 | { |
9785d95b | 366 | static OpenProcessToken_Proc s_pfn_Open_Process_Token = NULL; |
f60ae425 BK |
367 | HMODULE hm_advapi32 = NULL; |
368 | if (is_windows_9x () == TRUE) | |
369 | { | |
370 | return FALSE; | |
371 | } | |
9785d95b BK |
372 | if (g_b_init_open_process_token == 0) |
373 | { | |
374 | g_b_init_open_process_token = 1; | |
375 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
376 | s_pfn_Open_Process_Token = | |
377 | (OpenProcessToken_Proc) GetProcAddress (hm_advapi32, "OpenProcessToken"); | |
378 | } | |
379 | if (s_pfn_Open_Process_Token == NULL) | |
f60ae425 BK |
380 | { |
381 | return FALSE; | |
382 | } | |
383 | return ( | |
9785d95b | 384 | s_pfn_Open_Process_Token ( |
f60ae425 BK |
385 | ProcessHandle, |
386 | DesiredAccess, | |
387 | TokenHandle) | |
388 | ); | |
389 | } | |
390 | ||
bedf4aab JB |
391 | static BOOL WINAPI |
392 | get_token_information (HANDLE TokenHandle, | |
393 | TOKEN_INFORMATION_CLASS TokenInformationClass, | |
394 | LPVOID TokenInformation, | |
395 | DWORD TokenInformationLength, | |
396 | PDWORD ReturnLength) | |
f60ae425 | 397 | { |
9785d95b | 398 | static GetTokenInformation_Proc s_pfn_Get_Token_Information = NULL; |
f60ae425 BK |
399 | HMODULE hm_advapi32 = NULL; |
400 | if (is_windows_9x () == TRUE) | |
401 | { | |
402 | return FALSE; | |
403 | } | |
9785d95b BK |
404 | if (g_b_init_get_token_information == 0) |
405 | { | |
406 | g_b_init_get_token_information = 1; | |
407 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
408 | s_pfn_Get_Token_Information = | |
409 | (GetTokenInformation_Proc) GetProcAddress (hm_advapi32, "GetTokenInformation"); | |
410 | } | |
411 | if (s_pfn_Get_Token_Information == NULL) | |
f60ae425 BK |
412 | { |
413 | return FALSE; | |
414 | } | |
415 | return ( | |
9785d95b | 416 | s_pfn_Get_Token_Information ( |
f60ae425 BK |
417 | TokenHandle, |
418 | TokenInformationClass, | |
419 | TokenInformation, | |
420 | TokenInformationLength, | |
421 | ReturnLength) | |
422 | ); | |
423 | } | |
424 | ||
bedf4aab JB |
425 | static BOOL WINAPI |
426 | lookup_account_sid (LPCTSTR lpSystemName, | |
427 | PSID Sid, | |
428 | LPTSTR Name, | |
429 | LPDWORD cbName, | |
430 | LPTSTR DomainName, | |
431 | LPDWORD cbDomainName, | |
432 | PSID_NAME_USE peUse) | |
f60ae425 | 433 | { |
9785d95b | 434 | static LookupAccountSid_Proc s_pfn_Lookup_Account_Sid = NULL; |
f60ae425 BK |
435 | HMODULE hm_advapi32 = NULL; |
436 | if (is_windows_9x () == TRUE) | |
437 | { | |
438 | return FALSE; | |
439 | } | |
9785d95b BK |
440 | if (g_b_init_lookup_account_sid == 0) |
441 | { | |
442 | g_b_init_lookup_account_sid = 1; | |
443 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
444 | s_pfn_Lookup_Account_Sid = | |
445 | (LookupAccountSid_Proc) GetProcAddress (hm_advapi32, LookupAccountSid_Name); | |
446 | } | |
447 | if (s_pfn_Lookup_Account_Sid == NULL) | |
f60ae425 BK |
448 | { |
449 | return FALSE; | |
450 | } | |
451 | return ( | |
9785d95b | 452 | s_pfn_Lookup_Account_Sid ( |
f60ae425 BK |
453 | lpSystemName, |
454 | Sid, | |
455 | Name, | |
456 | cbName, | |
457 | DomainName, | |
458 | cbDomainName, | |
459 | peUse) | |
460 | ); | |
461 | } | |
462 | ||
bedf4aab JB |
463 | static PDWORD WINAPI |
464 | get_sid_sub_authority (PSID pSid, DWORD n) | |
c617afce EZ |
465 | { |
466 | static GetSidSubAuthority_Proc s_pfn_Get_Sid_Sub_Authority = NULL; | |
6811b9f4 | 467 | static DWORD zero = 0U; |
c617afce EZ |
468 | HMODULE hm_advapi32 = NULL; |
469 | if (is_windows_9x () == TRUE) | |
470 | { | |
6811b9f4 | 471 | return &zero; |
c617afce EZ |
472 | } |
473 | if (g_b_init_get_sid_sub_authority == 0) | |
474 | { | |
475 | g_b_init_get_sid_sub_authority = 1; | |
476 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
477 | s_pfn_Get_Sid_Sub_Authority = | |
478 | (GetSidSubAuthority_Proc) GetProcAddress ( | |
479 | hm_advapi32, "GetSidSubAuthority"); | |
480 | } | |
481 | if (s_pfn_Get_Sid_Sub_Authority == NULL) | |
482 | { | |
6811b9f4 | 483 | return &zero; |
c617afce EZ |
484 | } |
485 | return (s_pfn_Get_Sid_Sub_Authority (pSid, n)); | |
486 | } | |
487 | ||
bedf4aab JB |
488 | static PUCHAR WINAPI |
489 | get_sid_sub_authority_count (PSID pSid) | |
c617afce EZ |
490 | { |
491 | static GetSidSubAuthorityCount_Proc s_pfn_Get_Sid_Sub_Authority_Count = NULL; | |
6811b9f4 | 492 | static UCHAR zero = 0U; |
c617afce EZ |
493 | HMODULE hm_advapi32 = NULL; |
494 | if (is_windows_9x () == TRUE) | |
495 | { | |
6811b9f4 | 496 | return &zero; |
c617afce EZ |
497 | } |
498 | if (g_b_init_get_sid_sub_authority_count == 0) | |
499 | { | |
500 | g_b_init_get_sid_sub_authority_count = 1; | |
501 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
502 | s_pfn_Get_Sid_Sub_Authority_Count = | |
503 | (GetSidSubAuthorityCount_Proc) GetProcAddress ( | |
504 | hm_advapi32, "GetSidSubAuthorityCount"); | |
505 | } | |
506 | if (s_pfn_Get_Sid_Sub_Authority_Count == NULL) | |
507 | { | |
6811b9f4 | 508 | return &zero; |
c617afce EZ |
509 | } |
510 | return (s_pfn_Get_Sid_Sub_Authority_Count (pSid)); | |
511 | } | |
512 | ||
bedf4aab JB |
513 | static BOOL WINAPI |
514 | get_file_security (LPCTSTR lpFileName, | |
515 | SECURITY_INFORMATION RequestedInformation, | |
516 | PSECURITY_DESCRIPTOR pSecurityDescriptor, | |
517 | DWORD nLength, | |
518 | LPDWORD lpnLengthNeeded) | |
8aaaec6b EZ |
519 | { |
520 | static GetFileSecurity_Proc s_pfn_Get_File_Security = NULL; | |
521 | HMODULE hm_advapi32 = NULL; | |
522 | if (is_windows_9x () == TRUE) | |
523 | { | |
524 | return FALSE; | |
525 | } | |
526 | if (g_b_init_get_file_security == 0) | |
527 | { | |
528 | g_b_init_get_file_security = 1; | |
529 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
530 | s_pfn_Get_File_Security = | |
531 | (GetFileSecurity_Proc) GetProcAddress ( | |
532 | hm_advapi32, GetFileSecurity_Name); | |
533 | } | |
534 | if (s_pfn_Get_File_Security == NULL) | |
535 | { | |
536 | return FALSE; | |
537 | } | |
538 | return (s_pfn_Get_File_Security (lpFileName, RequestedInformation, | |
539 | pSecurityDescriptor, nLength, | |
540 | lpnLengthNeeded)); | |
541 | } | |
542 | ||
bedf4aab JB |
543 | static BOOL WINAPI |
544 | get_security_descriptor_owner (PSECURITY_DESCRIPTOR pSecurityDescriptor, | |
545 | PSID *pOwner, | |
546 | LPBOOL lpbOwnerDefaulted) | |
8aaaec6b EZ |
547 | { |
548 | static GetSecurityDescriptorOwner_Proc s_pfn_Get_Security_Descriptor_Owner = NULL; | |
549 | HMODULE hm_advapi32 = NULL; | |
550 | if (is_windows_9x () == TRUE) | |
551 | { | |
552 | return FALSE; | |
553 | } | |
554 | if (g_b_init_get_security_descriptor_owner == 0) | |
555 | { | |
556 | g_b_init_get_security_descriptor_owner = 1; | |
557 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
558 | s_pfn_Get_Security_Descriptor_Owner = | |
559 | (GetSecurityDescriptorOwner_Proc) GetProcAddress ( | |
560 | hm_advapi32, "GetSecurityDescriptorOwner"); | |
561 | } | |
562 | if (s_pfn_Get_Security_Descriptor_Owner == NULL) | |
563 | { | |
564 | return FALSE; | |
565 | } | |
566 | return (s_pfn_Get_Security_Descriptor_Owner (pSecurityDescriptor, pOwner, | |
567 | lpbOwnerDefaulted)); | |
568 | } | |
569 | ||
bedf4aab JB |
570 | static BOOL WINAPI |
571 | get_security_descriptor_group (PSECURITY_DESCRIPTOR pSecurityDescriptor, | |
572 | PSID *pGroup, | |
573 | LPBOOL lpbGroupDefaulted) | |
8aaaec6b EZ |
574 | { |
575 | static GetSecurityDescriptorGroup_Proc s_pfn_Get_Security_Descriptor_Group = NULL; | |
576 | HMODULE hm_advapi32 = NULL; | |
577 | if (is_windows_9x () == TRUE) | |
578 | { | |
579 | return FALSE; | |
580 | } | |
581 | if (g_b_init_get_security_descriptor_group == 0) | |
582 | { | |
583 | g_b_init_get_security_descriptor_group = 1; | |
584 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
585 | s_pfn_Get_Security_Descriptor_Group = | |
586 | (GetSecurityDescriptorGroup_Proc) GetProcAddress ( | |
587 | hm_advapi32, "GetSecurityDescriptorGroup"); | |
588 | } | |
589 | if (s_pfn_Get_Security_Descriptor_Group == NULL) | |
590 | { | |
591 | return FALSE; | |
592 | } | |
593 | return (s_pfn_Get_Security_Descriptor_Group (pSecurityDescriptor, pGroup, | |
594 | lpbGroupDefaulted)); | |
595 | } | |
596 | ||
bedf4aab JB |
597 | static BOOL WINAPI |
598 | is_valid_sid (PSID sid) | |
8aaaec6b EZ |
599 | { |
600 | static IsValidSid_Proc s_pfn_Is_Valid_Sid = NULL; | |
601 | HMODULE hm_advapi32 = NULL; | |
602 | if (is_windows_9x () == TRUE) | |
603 | { | |
604 | return FALSE; | |
605 | } | |
606 | if (g_b_init_is_valid_sid == 0) | |
607 | { | |
608 | g_b_init_is_valid_sid = 1; | |
609 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
610 | s_pfn_Is_Valid_Sid = | |
611 | (IsValidSid_Proc) GetProcAddress ( | |
612 | hm_advapi32, "IsValidSid"); | |
613 | } | |
614 | if (s_pfn_Is_Valid_Sid == NULL) | |
615 | { | |
616 | return FALSE; | |
617 | } | |
618 | return (s_pfn_Is_Valid_Sid (sid)); | |
619 | } | |
620 | ||
bedf4aab JB |
621 | static BOOL WINAPI |
622 | equal_sid (PSID sid1, PSID sid2) | |
f8b35b24 EZ |
623 | { |
624 | static EqualSid_Proc s_pfn_Equal_Sid = NULL; | |
625 | HMODULE hm_advapi32 = NULL; | |
626 | if (is_windows_9x () == TRUE) | |
627 | { | |
628 | return FALSE; | |
629 | } | |
630 | if (g_b_init_equal_sid == 0) | |
631 | { | |
632 | g_b_init_equal_sid = 1; | |
633 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
634 | s_pfn_Equal_Sid = | |
635 | (EqualSid_Proc) GetProcAddress ( | |
636 | hm_advapi32, "EqualSid"); | |
637 | } | |
638 | if (s_pfn_Equal_Sid == NULL) | |
639 | { | |
640 | return FALSE; | |
641 | } | |
642 | return (s_pfn_Equal_Sid (sid1, sid2)); | |
643 | } | |
644 | ||
bedf4aab JB |
645 | static DWORD WINAPI |
646 | get_length_sid (PSID sid) | |
f8b35b24 EZ |
647 | { |
648 | static GetLengthSid_Proc s_pfn_Get_Length_Sid = NULL; | |
649 | HMODULE hm_advapi32 = NULL; | |
650 | if (is_windows_9x () == TRUE) | |
651 | { | |
652 | return 0; | |
653 | } | |
654 | if (g_b_init_get_length_sid == 0) | |
655 | { | |
656 | g_b_init_get_length_sid = 1; | |
657 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
658 | s_pfn_Get_Length_Sid = | |
659 | (GetLengthSid_Proc) GetProcAddress ( | |
660 | hm_advapi32, "GetLengthSid"); | |
661 | } | |
662 | if (s_pfn_Get_Length_Sid == NULL) | |
663 | { | |
664 | return 0; | |
665 | } | |
666 | return (s_pfn_Get_Length_Sid (sid)); | |
667 | } | |
668 | ||
bedf4aab JB |
669 | static BOOL WINAPI |
670 | copy_sid (DWORD destlen, PSID dest, PSID src) | |
f8b35b24 EZ |
671 | { |
672 | static CopySid_Proc s_pfn_Copy_Sid = NULL; | |
673 | HMODULE hm_advapi32 = NULL; | |
674 | if (is_windows_9x () == TRUE) | |
675 | { | |
676 | return FALSE; | |
677 | } | |
678 | if (g_b_init_copy_sid == 0) | |
679 | { | |
680 | g_b_init_copy_sid = 1; | |
681 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
682 | s_pfn_Copy_Sid = | |
683 | (CopySid_Proc) GetProcAddress ( | |
684 | hm_advapi32, "CopySid"); | |
685 | } | |
686 | if (s_pfn_Copy_Sid == NULL) | |
687 | { | |
688 | return FALSE; | |
689 | } | |
690 | return (s_pfn_Copy_Sid (destlen, dest, src)); | |
691 | } | |
692 | ||
f60ae425 BK |
693 | /* |
694 | END: Wrapper functions around OpenProcessToken | |
695 | and other functions in advapi32.dll that are only | |
696 | supported in Windows NT / 2k / XP | |
697 | */ | |
698 | ||
bedf4aab JB |
699 | static void WINAPI |
700 | get_native_system_info (LPSYSTEM_INFO lpSystemInfo) | |
ad9e2d54 EZ |
701 | { |
702 | static GetNativeSystemInfo_Proc s_pfn_Get_Native_System_Info = NULL; | |
703 | if (is_windows_9x () != TRUE) | |
704 | { | |
705 | if (g_b_init_get_native_system_info == 0) | |
706 | { | |
707 | g_b_init_get_native_system_info = 1; | |
708 | s_pfn_Get_Native_System_Info = | |
709 | (GetNativeSystemInfo_Proc)GetProcAddress (GetModuleHandle ("kernel32.dll"), | |
710 | "GetNativeSystemInfo"); | |
711 | } | |
712 | if (s_pfn_Get_Native_System_Info != NULL) | |
713 | s_pfn_Get_Native_System_Info (lpSystemInfo); | |
714 | } | |
715 | else | |
716 | lpSystemInfo->dwNumberOfProcessors = -1; | |
717 | } | |
718 | ||
bedf4aab JB |
719 | static BOOL WINAPI |
720 | get_system_times (LPFILETIME lpIdleTime, | |
721 | LPFILETIME lpKernelTime, | |
722 | LPFILETIME lpUserTime) | |
ad9e2d54 EZ |
723 | { |
724 | static GetSystemTimes_Proc s_pfn_Get_System_times = NULL; | |
725 | if (is_windows_9x () == TRUE) | |
726 | { | |
727 | return FALSE; | |
728 | } | |
729 | if (g_b_init_get_system_times == 0) | |
730 | { | |
731 | g_b_init_get_system_times = 1; | |
732 | s_pfn_Get_System_times = | |
733 | (GetSystemTimes_Proc)GetProcAddress (GetModuleHandle ("kernel32.dll"), | |
734 | "GetSystemTimes"); | |
735 | } | |
736 | if (s_pfn_Get_System_times == NULL) | |
737 | return FALSE; | |
738 | return (s_pfn_Get_System_times (lpIdleTime, lpKernelTime, lpUserTime)); | |
739 | } | |
f60ae425 | 740 | \f |
18e070ac AI |
741 | /* Equivalent of strerror for W32 error codes. */ |
742 | char * | |
743 | w32_strerror (int error_no) | |
744 | { | |
745 | static char buf[500]; | |
746 | ||
747 | if (error_no == 0) | |
748 | error_no = GetLastError (); | |
749 | ||
750 | buf[0] = '\0'; | |
751 | if (!FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM, NULL, | |
752 | error_no, | |
753 | 0, /* choose most suitable language */ | |
754 | buf, sizeof (buf), NULL)) | |
755 | sprintf (buf, "w32 error %u", error_no); | |
756 | return buf; | |
757 | } | |
758 | ||
ed91b2ad EZ |
759 | /* Return 1 if P is a valid pointer to an object of size SIZE. Return |
760 | 0 if P is NOT a valid pointer. Return -1 if we cannot validate P. | |
761 | ||
762 | This is called from alloc.c:valid_pointer_p. */ | |
763 | int | |
764 | w32_valid_pointer_p (void *p, int size) | |
765 | { | |
766 | SIZE_T done; | |
767 | HANDLE h = OpenProcess (PROCESS_VM_READ, FALSE, GetCurrentProcessId ()); | |
768 | ||
769 | if (h) | |
770 | { | |
771 | unsigned char *buf = alloca (size); | |
772 | int retval = ReadProcessMemory (h, p, buf, size, &done); | |
773 | ||
774 | CloseHandle (h); | |
775 | return retval; | |
776 | } | |
777 | else | |
778 | return -1; | |
779 | } | |
780 | ||
76b3903d | 781 | static char startup_dir[MAXPATHLEN]; |
00b3b7b3 | 782 | |
95ed0025 | 783 | /* Get the current working directory. */ |
480b0c5b | 784 | char * |
95ed0025 RS |
785 | getwd (char *dir) |
786 | { | |
76b3903d | 787 | #if 0 |
480b0c5b GV |
788 | if (GetCurrentDirectory (MAXPATHLEN, dir) > 0) |
789 | return dir; | |
790 | return NULL; | |
76b3903d GV |
791 | #else |
792 | /* Emacs doesn't actually change directory itself, and we want to | |
793 | force our real wd to be where emacs.exe is to avoid unnecessary | |
794 | conflicts when trying to rename or delete directories. */ | |
795 | strcpy (dir, startup_dir); | |
796 | return dir; | |
797 | #endif | |
95ed0025 RS |
798 | } |
799 | ||
95ed0025 | 800 | /* Emulate getloadavg. */ |
ad9e2d54 EZ |
801 | |
802 | struct load_sample { | |
803 | time_t sample_time; | |
804 | ULONGLONG idle; | |
805 | ULONGLONG kernel; | |
806 | ULONGLONG user; | |
807 | }; | |
808 | ||
809 | /* Number of processors on this machine. */ | |
810 | static unsigned num_of_processors; | |
811 | ||
812 | /* We maintain 1-sec samples for the last 16 minutes in a circular buffer. */ | |
813 | static struct load_sample samples[16*60]; | |
814 | static int first_idx = -1, last_idx = -1; | |
815 | static int max_idx = sizeof (samples) / sizeof (samples[0]); | |
816 | ||
817 | static int | |
818 | buf_next (int from) | |
819 | { | |
820 | int next_idx = from + 1; | |
821 | ||
822 | if (next_idx >= max_idx) | |
823 | next_idx = 0; | |
824 | ||
825 | return next_idx; | |
826 | } | |
827 | ||
828 | static int | |
829 | buf_prev (int from) | |
830 | { | |
831 | int prev_idx = from - 1; | |
832 | ||
833 | if (prev_idx < 0) | |
834 | prev_idx = max_idx - 1; | |
835 | ||
836 | return prev_idx; | |
837 | } | |
838 | ||
839 | static void | |
840 | sample_system_load (ULONGLONG *idle, ULONGLONG *kernel, ULONGLONG *user) | |
841 | { | |
842 | SYSTEM_INFO sysinfo; | |
843 | FILETIME ft_idle, ft_user, ft_kernel; | |
844 | ||
845 | /* Initialize the number of processors on this machine. */ | |
846 | if (num_of_processors <= 0) | |
847 | { | |
848 | get_native_system_info (&sysinfo); | |
849 | num_of_processors = sysinfo.dwNumberOfProcessors; | |
850 | if (num_of_processors <= 0) | |
851 | { | |
852 | GetSystemInfo (&sysinfo); | |
853 | num_of_processors = sysinfo.dwNumberOfProcessors; | |
854 | } | |
855 | if (num_of_processors <= 0) | |
856 | num_of_processors = 1; | |
857 | } | |
858 | ||
859 | /* TODO: Take into account threads that are ready to run, by | |
860 | sampling the "\System\Processor Queue Length" performance | |
861 | counter. The code below accounts only for threads that are | |
862 | actually running. */ | |
863 | ||
864 | if (get_system_times (&ft_idle, &ft_kernel, &ft_user)) | |
865 | { | |
866 | ULARGE_INTEGER uidle, ukernel, uuser; | |
867 | ||
868 | memcpy (&uidle, &ft_idle, sizeof (ft_idle)); | |
869 | memcpy (&ukernel, &ft_kernel, sizeof (ft_kernel)); | |
870 | memcpy (&uuser, &ft_user, sizeof (ft_user)); | |
871 | *idle = uidle.QuadPart; | |
872 | *kernel = ukernel.QuadPart; | |
873 | *user = uuser.QuadPart; | |
874 | } | |
875 | else | |
876 | { | |
877 | *idle = 0; | |
878 | *kernel = 0; | |
879 | *user = 0; | |
880 | } | |
881 | } | |
882 | ||
883 | /* Produce the load average for a given time interval, using the | |
884 | samples in the samples[] array. WHICH can be 0, 1, or 2, meaning | |
885 | 1-minute, 5-minute, or 15-minute average, respectively. */ | |
886 | static double | |
887 | getavg (int which) | |
888 | { | |
889 | double retval = -1.0; | |
890 | double tdiff; | |
891 | int idx; | |
892 | double span = (which == 0 ? 1.0 : (which == 1 ? 5.0 : 15.0)) * 60; | |
893 | time_t now = samples[last_idx].sample_time; | |
894 | ||
895 | if (first_idx != last_idx) | |
896 | { | |
897 | for (idx = buf_prev (last_idx); ; idx = buf_prev (idx)) | |
898 | { | |
899 | tdiff = difftime (now, samples[idx].sample_time); | |
900 | if (tdiff >= span - 2*DBL_EPSILON*now) | |
901 | { | |
902 | long double sys = | |
903 | samples[last_idx].kernel + samples[last_idx].user | |
904 | - (samples[idx].kernel + samples[idx].user); | |
905 | long double idl = samples[last_idx].idle - samples[idx].idle; | |
906 | ||
907 | retval = (1.0 - idl / sys) * num_of_processors; | |
908 | break; | |
909 | } | |
910 | if (idx == first_idx) | |
911 | break; | |
912 | } | |
913 | } | |
914 | ||
915 | return retval; | |
916 | } | |
917 | ||
95ed0025 RS |
918 | int |
919 | getloadavg (double loadavg[], int nelem) | |
920 | { | |
ad9e2d54 EZ |
921 | int elem; |
922 | ULONGLONG idle, kernel, user; | |
923 | time_t now = time (NULL); | |
924 | ||
925 | /* Store another sample. We ignore samples that are less than 1 sec | |
926 | apart. */ | |
927 | if (difftime (now, samples[last_idx].sample_time) >= 1.0 - 2*DBL_EPSILON*now) | |
928 | { | |
929 | sample_system_load (&idle, &kernel, &user); | |
930 | last_idx = buf_next (last_idx); | |
931 | samples[last_idx].sample_time = now; | |
932 | samples[last_idx].idle = idle; | |
933 | samples[last_idx].kernel = kernel; | |
934 | samples[last_idx].user = user; | |
935 | /* If the buffer has more that 15 min worth of samples, discard | |
936 | the old ones. */ | |
937 | if (first_idx == -1) | |
938 | first_idx = last_idx; | |
939 | while (first_idx != last_idx | |
940 | && (difftime (now, samples[first_idx].sample_time) | |
941 | >= 15.0*60 + 2*DBL_EPSILON*now)) | |
942 | first_idx = buf_next (first_idx); | |
943 | } | |
95ed0025 | 944 | |
ad9e2d54 | 945 | for (elem = 0; elem < nelem; elem++) |
95ed0025 | 946 | { |
ad9e2d54 EZ |
947 | double avg = getavg (elem); |
948 | ||
949 | if (avg < 0) | |
950 | break; | |
951 | loadavg[elem] = avg; | |
95ed0025 | 952 | } |
ad9e2d54 EZ |
953 | |
954 | return elem; | |
95ed0025 RS |
955 | } |
956 | ||
480b0c5b | 957 | /* Emulate getpwuid, getpwnam and others. */ |
95ed0025 | 958 | |
051fe60d GV |
959 | #define PASSWD_FIELD_SIZE 256 |
960 | ||
07f7980a EZ |
961 | static char dflt_passwd_name[PASSWD_FIELD_SIZE]; |
962 | static char dflt_passwd_passwd[PASSWD_FIELD_SIZE]; | |
963 | static char dflt_passwd_gecos[PASSWD_FIELD_SIZE]; | |
964 | static char dflt_passwd_dir[PASSWD_FIELD_SIZE]; | |
965 | static char dflt_passwd_shell[PASSWD_FIELD_SIZE]; | |
95ed0025 | 966 | |
07f7980a | 967 | static struct passwd dflt_passwd = |
95ed0025 | 968 | { |
07f7980a EZ |
969 | dflt_passwd_name, |
970 | dflt_passwd_passwd, | |
95ed0025 RS |
971 | 0, |
972 | 0, | |
973 | 0, | |
07f7980a EZ |
974 | dflt_passwd_gecos, |
975 | dflt_passwd_dir, | |
976 | dflt_passwd_shell, | |
95ed0025 RS |
977 | }; |
978 | ||
07f7980a EZ |
979 | static char dflt_group_name[GNLEN+1]; |
980 | ||
981 | static struct group dflt_group = | |
3d19b645 | 982 | { |
07f7980a EZ |
983 | /* When group information is not available, we return this as the |
984 | group for all files. */ | |
985 | dflt_group_name, | |
986 | 0, | |
3d19b645 LH |
987 | }; |
988 | ||
22749e9a | 989 | unsigned |
b56ceb92 | 990 | getuid (void) |
177c0ea7 | 991 | { |
07f7980a | 992 | return dflt_passwd.pw_uid; |
480b0c5b GV |
993 | } |
994 | ||
22749e9a | 995 | unsigned |
b56ceb92 | 996 | geteuid (void) |
177c0ea7 | 997 | { |
480b0c5b GV |
998 | /* I could imagine arguing for checking to see whether the user is |
999 | in the Administrators group and returning a UID of 0 for that | |
1000 | case, but I don't know how wise that would be in the long run. */ | |
177c0ea7 | 1001 | return getuid (); |
480b0c5b GV |
1002 | } |
1003 | ||
22749e9a | 1004 | unsigned |
b56ceb92 | 1005 | getgid (void) |
177c0ea7 | 1006 | { |
07f7980a | 1007 | return dflt_passwd.pw_gid; |
480b0c5b GV |
1008 | } |
1009 | ||
22749e9a | 1010 | unsigned |
b56ceb92 | 1011 | getegid (void) |
177c0ea7 | 1012 | { |
480b0c5b GV |
1013 | return getgid (); |
1014 | } | |
1015 | ||
95ed0025 | 1016 | struct passwd * |
22749e9a | 1017 | getpwuid (unsigned uid) |
95ed0025 | 1018 | { |
07f7980a EZ |
1019 | if (uid == dflt_passwd.pw_uid) |
1020 | return &dflt_passwd; | |
480b0c5b | 1021 | return NULL; |
95ed0025 RS |
1022 | } |
1023 | ||
3d19b645 LH |
1024 | struct group * |
1025 | getgrgid (gid_t gid) | |
1026 | { | |
07f7980a | 1027 | return &dflt_group; |
3d19b645 LH |
1028 | } |
1029 | ||
95ed0025 RS |
1030 | struct passwd * |
1031 | getpwnam (char *name) | |
1032 | { | |
1033 | struct passwd *pw; | |
177c0ea7 | 1034 | |
95ed0025 RS |
1035 | pw = getpwuid (getuid ()); |
1036 | if (!pw) | |
1037 | return pw; | |
1038 | ||
05131107 | 1039 | if (xstrcasecmp (name, pw->pw_name)) |
95ed0025 RS |
1040 | return NULL; |
1041 | ||
1042 | return pw; | |
1043 | } | |
1044 | ||
bedf4aab | 1045 | static void |
b56ceb92 | 1046 | init_user_info (void) |
95ed0025 | 1047 | { |
480b0c5b GV |
1048 | /* Find the user's real name by opening the process token and |
1049 | looking up the name associated with the user-sid in that token. | |
1050 | ||
1051 | Use the relative portion of the identifier authority value from | |
1052 | the user-sid as the user id value (same for group id using the | |
1053 | primary group sid from the process token). */ | |
1054 | ||
07f7980a | 1055 | char uname[UNLEN+1], gname[GNLEN+1], domain[1025]; |
32cef06e | 1056 | DWORD ulength = sizeof (uname), dlength = sizeof (domain), needed; |
07f7980a | 1057 | DWORD glength = sizeof (gname); |
10aabbf9 JB |
1058 | HANDLE token = NULL; |
1059 | SID_NAME_USE user_type; | |
32cef06e EZ |
1060 | unsigned char *buf = NULL; |
1061 | DWORD blen = 0; | |
634d3003 EZ |
1062 | TOKEN_USER user_token; |
1063 | TOKEN_PRIMARY_GROUP group_token; | |
32cef06e | 1064 | BOOL result; |
10aabbf9 | 1065 | |
32cef06e EZ |
1066 | result = open_process_token (GetCurrentProcess (), TOKEN_QUERY, &token); |
1067 | if (result) | |
1068 | { | |
1069 | result = get_token_information (token, TokenUser, NULL, 0, &blen); | |
1070 | if (!result && GetLastError () == ERROR_INSUFFICIENT_BUFFER) | |
1071 | { | |
1072 | buf = xmalloc (blen); | |
1073 | result = get_token_information (token, TokenUser, | |
1074 | (LPVOID)buf, blen, &needed); | |
1075 | if (result) | |
1076 | { | |
1077 | memcpy (&user_token, buf, sizeof (user_token)); | |
1078 | result = lookup_account_sid (NULL, user_token.User.Sid, | |
1079 | uname, &ulength, | |
1080 | domain, &dlength, &user_type); | |
1081 | } | |
1082 | } | |
1083 | else | |
1084 | result = FALSE; | |
1085 | } | |
1086 | if (result) | |
d1c1c3d2 | 1087 | { |
07f7980a | 1088 | strcpy (dflt_passwd.pw_name, uname); |
c617afce | 1089 | /* Determine a reasonable uid value. */ |
05131107 | 1090 | if (xstrcasecmp ("administrator", uname) == 0) |
480b0c5b | 1091 | { |
07f7980a EZ |
1092 | dflt_passwd.pw_uid = 500; /* well-known Administrator uid */ |
1093 | dflt_passwd.pw_gid = 513; /* well-known None gid */ | |
480b0c5b GV |
1094 | } |
1095 | else | |
1096 | { | |
ce0ee994 EZ |
1097 | /* Use the last sub-authority value of the RID, the relative |
1098 | portion of the SID, as user/group ID. */ | |
8aaaec6b | 1099 | dflt_passwd.pw_uid = get_rid (user_token.User.Sid); |
480b0c5b | 1100 | |
8aaaec6b | 1101 | /* Get group id and name. */ |
32cef06e EZ |
1102 | result = get_token_information (token, TokenPrimaryGroup, |
1103 | (LPVOID)buf, blen, &needed); | |
1104 | if (!result && GetLastError () == ERROR_INSUFFICIENT_BUFFER) | |
1105 | { | |
1106 | buf = xrealloc (buf, blen = needed); | |
1107 | result = get_token_information (token, TokenPrimaryGroup, | |
1108 | (LPVOID)buf, blen, &needed); | |
1109 | } | |
1110 | if (result) | |
480b0c5b | 1111 | { |
634d3003 | 1112 | memcpy (&group_token, buf, sizeof (group_token)); |
8aaaec6b | 1113 | dflt_passwd.pw_gid = get_rid (group_token.PrimaryGroup); |
07f7980a | 1114 | dlength = sizeof (domain); |
32cef06e EZ |
1115 | /* If we can get at the real Primary Group name, use that. |
1116 | Otherwise, the default group name was already set to | |
1117 | "None" in globals_of_w32. */ | |
07f7980a EZ |
1118 | if (lookup_account_sid (NULL, group_token.PrimaryGroup, |
1119 | gname, &glength, NULL, &dlength, | |
1120 | &user_type)) | |
1121 | strcpy (dflt_group_name, gname); | |
480b0c5b GV |
1122 | } |
1123 | else | |
07f7980a | 1124 | dflt_passwd.pw_gid = dflt_passwd.pw_uid; |
480b0c5b GV |
1125 | } |
1126 | } | |
1127 | /* If security calls are not supported (presumably because we | |
32cef06e | 1128 | are running under Windows 9X), fallback to this: */ |
07f7980a | 1129 | else if (GetUserName (uname, &ulength)) |
480b0c5b | 1130 | { |
07f7980a | 1131 | strcpy (dflt_passwd.pw_name, uname); |
05131107 | 1132 | if (xstrcasecmp ("administrator", uname) == 0) |
07f7980a | 1133 | dflt_passwd.pw_uid = 0; |
480b0c5b | 1134 | else |
07f7980a EZ |
1135 | dflt_passwd.pw_uid = 123; |
1136 | dflt_passwd.pw_gid = dflt_passwd.pw_uid; | |
480b0c5b GV |
1137 | } |
1138 | else | |
1139 | { | |
07f7980a EZ |
1140 | strcpy (dflt_passwd.pw_name, "unknown"); |
1141 | dflt_passwd.pw_uid = 123; | |
1142 | dflt_passwd.pw_gid = 123; | |
d1c1c3d2 | 1143 | } |
07f7980a | 1144 | dflt_group.gr_gid = dflt_passwd.pw_gid; |
95ed0025 | 1145 | |
480b0c5b GV |
1146 | /* Ensure HOME and SHELL are defined. */ |
1147 | if (getenv ("HOME") == NULL) | |
ca149beb | 1148 | abort (); |
480b0c5b | 1149 | if (getenv ("SHELL") == NULL) |
ca149beb | 1150 | abort (); |
95ed0025 | 1151 | |
480b0c5b | 1152 | /* Set dir and shell from environment variables. */ |
07f7980a EZ |
1153 | strcpy (dflt_passwd.pw_dir, getenv ("HOME")); |
1154 | strcpy (dflt_passwd.pw_shell, getenv ("SHELL")); | |
bd4a449f | 1155 | |
32cef06e | 1156 | xfree (buf); |
480b0c5b GV |
1157 | if (token) |
1158 | CloseHandle (token); | |
95ed0025 RS |
1159 | } |
1160 | ||
95ed0025 | 1161 | int |
b56ceb92 | 1162 | random (void) |
95ed0025 | 1163 | { |
480b0c5b GV |
1164 | /* rand () on NT gives us 15 random bits...hack together 30 bits. */ |
1165 | return ((rand () << 15) | rand ()); | |
95ed0025 RS |
1166 | } |
1167 | ||
95ed0025 | 1168 | void |
480b0c5b | 1169 | srandom (int seed) |
95ed0025 | 1170 | { |
480b0c5b | 1171 | srand (seed); |
95ed0025 RS |
1172 | } |
1173 | ||
76b3903d | 1174 | |
cbe39279 RS |
1175 | /* Normalize filename by converting all path separators to |
1176 | the specified separator. Also conditionally convert upper | |
1177 | case path name components to lower case. */ | |
1178 | ||
1179 | static void | |
b56ceb92 | 1180 | normalize_filename (register char *fp, char path_sep) |
cbe39279 RS |
1181 | { |
1182 | char sep; | |
1183 | char *elem; | |
1184 | ||
5162ffce MB |
1185 | /* Always lower-case drive letters a-z, even if the filesystem |
1186 | preserves case in filenames. | |
1187 | This is so filenames can be compared by string comparison | |
1188 | functions that are case-sensitive. Even case-preserving filesystems | |
1189 | do not distinguish case in drive letters. */ | |
1190 | if (fp[1] == ':' && *fp >= 'A' && *fp <= 'Z') | |
1191 | { | |
1192 | *fp += 'a' - 'A'; | |
1193 | fp += 2; | |
1194 | } | |
1195 | ||
fbd6baed | 1196 | if (NILP (Vw32_downcase_file_names)) |
cbe39279 RS |
1197 | { |
1198 | while (*fp) | |
1199 | { | |
1200 | if (*fp == '/' || *fp == '\\') | |
1201 | *fp = path_sep; | |
1202 | fp++; | |
1203 | } | |
1204 | return; | |
1205 | } | |
1206 | ||
1207 | sep = path_sep; /* convert to this path separator */ | |
1208 | elem = fp; /* start of current path element */ | |
1209 | ||
1210 | do { | |
1211 | if (*fp >= 'a' && *fp <= 'z') | |
1212 | elem = 0; /* don't convert this element */ | |
1213 | ||
1214 | if (*fp == 0 || *fp == ':') | |
1215 | { | |
1216 | sep = *fp; /* restore current separator (or 0) */ | |
1217 | *fp = '/'; /* after conversion of this element */ | |
1218 | } | |
1219 | ||
1220 | if (*fp == '/' || *fp == '\\') | |
1221 | { | |
1222 | if (elem && elem != fp) | |
1223 | { | |
1224 | *fp = 0; /* temporary end of string */ | |
1225 | _strlwr (elem); /* while we convert to lower case */ | |
1226 | } | |
1227 | *fp = sep; /* convert (or restore) path separator */ | |
1228 | elem = fp + 1; /* next element starts after separator */ | |
1229 | sep = path_sep; | |
1230 | } | |
1231 | } while (*fp++); | |
1232 | } | |
1233 | ||
480b0c5b | 1234 | /* Destructively turn backslashes into slashes. */ |
95ed0025 | 1235 | void |
b56ceb92 | 1236 | dostounix_filename (register char *p) |
95ed0025 | 1237 | { |
cbe39279 | 1238 | normalize_filename (p, '/'); |
95ed0025 RS |
1239 | } |
1240 | ||
480b0c5b | 1241 | /* Destructively turn slashes into backslashes. */ |
95ed0025 | 1242 | void |
b56ceb92 | 1243 | unixtodos_filename (register char *p) |
95ed0025 | 1244 | { |
cbe39279 | 1245 | normalize_filename (p, '\\'); |
95ed0025 RS |
1246 | } |
1247 | ||
480b0c5b GV |
1248 | /* Remove all CR's that are followed by a LF. |
1249 | (From msdos.c...probably should figure out a way to share it, | |
1250 | although this code isn't going to ever change.) */ | |
bedf4aab | 1251 | static int |
b56ceb92 | 1252 | crlf_to_lf (register int n, register unsigned char *buf) |
35f0d482 | 1253 | { |
480b0c5b GV |
1254 | unsigned char *np = buf; |
1255 | unsigned char *startp = buf; | |
1256 | unsigned char *endp = buf + n; | |
35f0d482 | 1257 | |
480b0c5b GV |
1258 | if (n == 0) |
1259 | return n; | |
1260 | while (buf < endp - 1) | |
95ed0025 | 1261 | { |
480b0c5b GV |
1262 | if (*buf == 0x0d) |
1263 | { | |
1264 | if (*(++buf) != 0x0a) | |
1265 | *np++ = 0x0d; | |
1266 | } | |
1267 | else | |
1268 | *np++ = *buf++; | |
95ed0025 | 1269 | } |
480b0c5b GV |
1270 | if (buf < endp) |
1271 | *np++ = *buf++; | |
1272 | return np - startp; | |
95ed0025 RS |
1273 | } |
1274 | ||
76b3903d GV |
1275 | /* Parse the root part of file name, if present. Return length and |
1276 | optionally store pointer to char after root. */ | |
1277 | static int | |
1278 | parse_root (char * name, char ** pPath) | |
1279 | { | |
1280 | char * start = name; | |
1281 | ||
1282 | if (name == NULL) | |
1283 | return 0; | |
1284 | ||
1285 | /* find the root name of the volume if given */ | |
1286 | if (isalpha (name[0]) && name[1] == ':') | |
1287 | { | |
1288 | /* skip past drive specifier */ | |
1289 | name += 2; | |
1290 | if (IS_DIRECTORY_SEP (name[0])) | |
1291 | name++; | |
1292 | } | |
1293 | else if (IS_DIRECTORY_SEP (name[0]) && IS_DIRECTORY_SEP (name[1])) | |
1294 | { | |
1295 | int slashes = 2; | |
1296 | name += 2; | |
1297 | do | |
1298 | { | |
1299 | if (IS_DIRECTORY_SEP (*name) && --slashes == 0) | |
1300 | break; | |
1301 | name++; | |
1302 | } | |
1303 | while ( *name ); | |
1304 | if (IS_DIRECTORY_SEP (name[0])) | |
1305 | name++; | |
1306 | } | |
1307 | ||
1308 | if (pPath) | |
1309 | *pPath = name; | |
1310 | ||
1311 | return name - start; | |
1312 | } | |
1313 | ||
1314 | /* Get long base name for name; name is assumed to be absolute. */ | |
1315 | static int | |
1316 | get_long_basename (char * name, char * buf, int size) | |
1317 | { | |
1318 | WIN32_FIND_DATA find_data; | |
1319 | HANDLE dir_handle; | |
1320 | int len = 0; | |
1321 | ||
9ab8560d | 1322 | /* must be valid filename, no wild cards or other invalid characters */ |
22189f79 | 1323 | if (_mbspbrk (name, "*?|<>\"")) |
bb1584c8 RS |
1324 | return 0; |
1325 | ||
76b3903d GV |
1326 | dir_handle = FindFirstFile (name, &find_data); |
1327 | if (dir_handle != INVALID_HANDLE_VALUE) | |
1328 | { | |
1329 | if ((len = strlen (find_data.cFileName)) < size) | |
1330 | memcpy (buf, find_data.cFileName, len + 1); | |
1331 | else | |
1332 | len = 0; | |
1333 | FindClose (dir_handle); | |
1334 | } | |
1335 | return len; | |
1336 | } | |
1337 | ||
1338 | /* Get long name for file, if possible (assumed to be absolute). */ | |
1339 | BOOL | |
1340 | w32_get_long_filename (char * name, char * buf, int size) | |
1341 | { | |
1342 | char * o = buf; | |
1343 | char * p; | |
1344 | char * q; | |
1345 | char full[ MAX_PATH ]; | |
1346 | int len; | |
1347 | ||
1348 | len = strlen (name); | |
1349 | if (len >= MAX_PATH) | |
1350 | return FALSE; | |
1351 | ||
1352 | /* Use local copy for destructive modification. */ | |
1353 | memcpy (full, name, len+1); | |
1354 | unixtodos_filename (full); | |
1355 | ||
1356 | /* Copy root part verbatim. */ | |
1357 | len = parse_root (full, &p); | |
1358 | memcpy (o, full, len); | |
1359 | o += len; | |
4f8ac0b2 | 1360 | *o = '\0'; |
76b3903d GV |
1361 | size -= len; |
1362 | ||
4f8ac0b2 | 1363 | while (p != NULL && *p) |
76b3903d GV |
1364 | { |
1365 | q = p; | |
1366 | p = strchr (q, '\\'); | |
1367 | if (p) *p = '\0'; | |
1368 | len = get_long_basename (full, o, size); | |
1369 | if (len > 0) | |
1370 | { | |
1371 | o += len; | |
1372 | size -= len; | |
1373 | if (p != NULL) | |
1374 | { | |
1375 | *p++ = '\\'; | |
1376 | if (size < 2) | |
1377 | return FALSE; | |
1378 | *o++ = '\\'; | |
1379 | size--; | |
1380 | *o = '\0'; | |
1381 | } | |
1382 | } | |
1383 | else | |
1384 | return FALSE; | |
1385 | } | |
76b3903d GV |
1386 | |
1387 | return TRUE; | |
1388 | } | |
1389 | ||
bedf4aab | 1390 | static int |
9d3355d1 GV |
1391 | is_unc_volume (const char *filename) |
1392 | { | |
1393 | const char *ptr = filename; | |
1394 | ||
1395 | if (!IS_DIRECTORY_SEP (ptr[0]) || !IS_DIRECTORY_SEP (ptr[1]) || !ptr[2]) | |
1396 | return 0; | |
1397 | ||
22189f79 | 1398 | if (_mbspbrk (ptr + 2, "*?|<>\"\\/")) |
9d3355d1 GV |
1399 | return 0; |
1400 | ||
1401 | return 1; | |
1402 | } | |
76b3903d | 1403 | |
95ed0025 RS |
1404 | /* Routines that are no-ops on NT but are defined to get Emacs to compile. */ |
1405 | ||
177c0ea7 JB |
1406 | int |
1407 | sigsetmask (int signal_mask) | |
1408 | { | |
95ed0025 RS |
1409 | return 0; |
1410 | } | |
1411 | ||
177c0ea7 JB |
1412 | int |
1413 | sigmask (int sig) | |
1414 | { | |
8f900f6e AI |
1415 | return 0; |
1416 | } | |
1417 | ||
177c0ea7 JB |
1418 | int |
1419 | sigblock (int sig) | |
1420 | { | |
95ed0025 RS |
1421 | return 0; |
1422 | } | |
1423 | ||
177c0ea7 JB |
1424 | int |
1425 | sigunblock (int sig) | |
1426 | { | |
8f900f6e AI |
1427 | return 0; |
1428 | } | |
1429 | ||
d6dae14b EZ |
1430 | int |
1431 | sigemptyset (sigset_t *set) | |
1432 | { | |
1433 | return 0; | |
1434 | } | |
1435 | ||
1436 | int | |
1437 | sigaddset (sigset_t *set, int signo) | |
1438 | { | |
1439 | return 0; | |
1440 | } | |
1441 | ||
1442 | int | |
1443 | sigfillset (sigset_t *set) | |
1444 | { | |
1445 | return 0; | |
1446 | } | |
1447 | ||
1448 | int | |
1449 | sigprocmask (int how, const sigset_t *set, sigset_t *oset) | |
1450 | { | |
1451 | return 0; | |
1452 | } | |
1453 | ||
177c0ea7 JB |
1454 | int |
1455 | setpgrp (int pid, int gid) | |
1456 | { | |
95ed0025 RS |
1457 | return 0; |
1458 | } | |
1459 | ||
177c0ea7 JB |
1460 | int |
1461 | alarm (int seconds) | |
1462 | { | |
95ed0025 RS |
1463 | return 0; |
1464 | } | |
1465 | ||
480b0c5b | 1466 | #define REG_ROOT "SOFTWARE\\GNU\\Emacs" |
f332b293 | 1467 | |
177c0ea7 | 1468 | LPBYTE |
b56ceb92 | 1469 | w32_get_resource (char *key, LPDWORD lpdwtype) |
f332b293 GV |
1470 | { |
1471 | LPBYTE lpvalue; | |
1472 | HKEY hrootkey = NULL; | |
1473 | DWORD cbData; | |
177c0ea7 JB |
1474 | |
1475 | /* Check both the current user and the local machine to see if | |
f332b293 | 1476 | we have any resources. */ |
177c0ea7 | 1477 | |
f332b293 GV |
1478 | if (RegOpenKeyEx (HKEY_CURRENT_USER, REG_ROOT, 0, KEY_READ, &hrootkey) == ERROR_SUCCESS) |
1479 | { | |
1480 | lpvalue = NULL; | |
1481 | ||
177c0ea7 JB |
1482 | if (RegQueryValueEx (hrootkey, key, NULL, NULL, NULL, &cbData) == ERROR_SUCCESS |
1483 | && (lpvalue = (LPBYTE) xmalloc (cbData)) != NULL | |
f332b293 GV |
1484 | && RegQueryValueEx (hrootkey, key, NULL, lpdwtype, lpvalue, &cbData) == ERROR_SUCCESS) |
1485 | { | |
4da4d9bb | 1486 | RegCloseKey (hrootkey); |
f332b293 GV |
1487 | return (lpvalue); |
1488 | } | |
1489 | ||
70fdbb46 | 1490 | xfree (lpvalue); |
177c0ea7 | 1491 | |
f332b293 | 1492 | RegCloseKey (hrootkey); |
177c0ea7 JB |
1493 | } |
1494 | ||
f332b293 GV |
1495 | if (RegOpenKeyEx (HKEY_LOCAL_MACHINE, REG_ROOT, 0, KEY_READ, &hrootkey) == ERROR_SUCCESS) |
1496 | { | |
1497 | lpvalue = NULL; | |
177c0ea7 | 1498 | |
76b3903d GV |
1499 | if (RegQueryValueEx (hrootkey, key, NULL, NULL, NULL, &cbData) == ERROR_SUCCESS |
1500 | && (lpvalue = (LPBYTE) xmalloc (cbData)) != NULL | |
1501 | && RegQueryValueEx (hrootkey, key, NULL, lpdwtype, lpvalue, &cbData) == ERROR_SUCCESS) | |
f332b293 | 1502 | { |
4da4d9bb | 1503 | RegCloseKey (hrootkey); |
f332b293 GV |
1504 | return (lpvalue); |
1505 | } | |
177c0ea7 | 1506 | |
70fdbb46 | 1507 | xfree (lpvalue); |
177c0ea7 | 1508 | |
f332b293 | 1509 | RegCloseKey (hrootkey); |
177c0ea7 JB |
1510 | } |
1511 | ||
f332b293 GV |
1512 | return (NULL); |
1513 | } | |
1514 | ||
75b08edb | 1515 | char *get_emacs_configuration (void); |
94eab1c8 | 1516 | |
f332b293 | 1517 | void |
aa7b87b0 | 1518 | init_environment (char ** argv) |
f332b293 | 1519 | { |
b3308d2e KH |
1520 | static const char * const tempdirs[] = { |
1521 | "$TMPDIR", "$TEMP", "$TMP", "c:/" | |
1522 | }; | |
2d5324c5 | 1523 | |
b3308d2e | 1524 | int i; |
2d5324c5 | 1525 | |
b3308d2e KH |
1526 | const int imax = sizeof (tempdirs) / sizeof (tempdirs[0]); |
1527 | ||
1528 | /* Make sure they have a usable $TMPDIR. Many Emacs functions use | |
1529 | temporary files and assume "/tmp" if $TMPDIR is unset, which | |
1530 | will break on DOS/Windows. Refuse to work if we cannot find | |
1531 | a directory, not even "c:/", usable for that purpose. */ | |
1532 | for (i = 0; i < imax ; i++) | |
1533 | { | |
1534 | const char *tmp = tempdirs[i]; | |
1535 | ||
1536 | if (*tmp == '$') | |
1537 | tmp = getenv (tmp + 1); | |
1538 | /* Note that `access' can lie to us if the directory resides on a | |
1539 | read-only filesystem, like CD-ROM or a write-protected floppy. | |
1540 | The only way to be really sure is to actually create a file and | |
1541 | see if it succeeds. But I think that's too much to ask. */ | |
a302c7ae | 1542 | if (tmp && _access (tmp, D_OK) == 0) |
b3308d2e KH |
1543 | { |
1544 | char * var = alloca (strlen (tmp) + 8); | |
1545 | sprintf (var, "TMPDIR=%s", tmp); | |
aca583b2 | 1546 | _putenv (strdup (var)); |
b3308d2e KH |
1547 | break; |
1548 | } | |
1549 | } | |
1550 | if (i >= imax) | |
1551 | cmd_error_internal | |
1552 | (Fcons (Qerror, | |
1553 | Fcons (build_string ("no usable temporary directories found!!"), | |
1554 | Qnil)), | |
1555 | "While setting TMPDIR: "); | |
1556 | ||
ca149beb AI |
1557 | /* Check for environment variables and use registry settings if they |
1558 | don't exist. Fallback on default values where applicable. */ | |
f332b293 | 1559 | { |
480b0c5b GV |
1560 | int i; |
1561 | LPBYTE lpval; | |
1562 | DWORD dwType; | |
69fb0241 | 1563 | char locale_name[32]; |
2d5324c5 JR |
1564 | struct stat ignored; |
1565 | char default_home[MAX_PATH]; | |
fdc5744d | 1566 | int appdata = 0; |
f332b293 | 1567 | |
e00b99c8 | 1568 | static const struct env_entry |
ca149beb AI |
1569 | { |
1570 | char * name; | |
1571 | char * def_value; | |
e00b99c8 | 1572 | } dflt_envvars[] = |
ca149beb AI |
1573 | { |
1574 | {"HOME", "C:/"}, | |
1575 | {"PRELOAD_WINSOCK", NULL}, | |
1576 | {"emacs_dir", "C:/emacs"}, | |
cc14250a | 1577 | {"EMACSLOADPATH", "%emacs_dir%/site-lisp;%emacs_dir%/../site-lisp;%emacs_dir%/lisp;%emacs_dir%/leim"}, |
ca149beb AI |
1578 | {"SHELL", "%emacs_dir%/bin/cmdproxy.exe"}, |
1579 | {"EMACSDATA", "%emacs_dir%/etc"}, | |
1580 | {"EMACSPATH", "%emacs_dir%/bin"}, | |
76b3903d | 1581 | /* We no longer set INFOPATH because Info-default-directory-list |
ca149beb AI |
1582 | is then ignored. */ |
1583 | /* {"INFOPATH", "%emacs_dir%/info"}, */ | |
1584 | {"EMACSDOC", "%emacs_dir%/etc"}, | |
69fb0241 JR |
1585 | {"TERM", "cmd"}, |
1586 | {"LANG", NULL}, | |
480b0c5b GV |
1587 | }; |
1588 | ||
ed3751c8 | 1589 | #define N_ENV_VARS sizeof (dflt_envvars)/sizeof (dflt_envvars[0]) |
e00b99c8 EZ |
1590 | |
1591 | /* We need to copy dflt_envvars[] and work on the copy because we | |
1592 | don't want the dumped Emacs to inherit the values of | |
1593 | environment variables we saw during dumping (which could be on | |
1594 | a different system). The defaults above must be left intact. */ | |
1595 | struct env_entry env_vars[N_ENV_VARS]; | |
1596 | ||
1597 | for (i = 0; i < N_ENV_VARS; i++) | |
1598 | env_vars[i] = dflt_envvars[i]; | |
1599 | ||
2d5324c5 JR |
1600 | /* For backwards compatibility, check if a .emacs file exists in C:/ |
1601 | If not, then we can try to default to the appdata directory under the | |
1602 | user's profile, which is more likely to be writable. */ | |
1603 | if (stat ("C:/.emacs", &ignored) < 0) | |
94eab1c8 JB |
1604 | { |
1605 | HRESULT profile_result; | |
1606 | /* Dynamically load ShGetFolderPath, as it won't exist on versions | |
1607 | of Windows 95 and NT4 that have not been updated to include | |
1608 | MSIE 5. */ | |
1609 | ShGetFolderPath_fn get_folder_path; | |
1610 | get_folder_path = (ShGetFolderPath_fn) | |
1611 | GetProcAddress (GetModuleHandle ("shell32.dll"), "SHGetFolderPathA"); | |
1612 | ||
1613 | if (get_folder_path != NULL) | |
1614 | { | |
1615 | profile_result = get_folder_path (NULL, CSIDL_APPDATA, NULL, | |
1616 | 0, default_home); | |
2d5324c5 | 1617 | |
94eab1c8 JB |
1618 | /* If we can't get the appdata dir, revert to old behavior. */ |
1619 | if (profile_result == S_OK) | |
fdc5744d JB |
1620 | { |
1621 | env_vars[0].def_value = default_home; | |
1622 | appdata = 1; | |
1623 | } | |
94eab1c8 JB |
1624 | } |
1625 | } | |
2d5324c5 | 1626 | |
69fb0241 JR |
1627 | /* Get default locale info and use it for LANG. */ |
1628 | if (GetLocaleInfo (LOCALE_USER_DEFAULT, | |
1629 | LOCALE_SABBREVLANGNAME | LOCALE_USE_CP_ACP, | |
1630 | locale_name, sizeof (locale_name))) | |
1631 | { | |
e00b99c8 | 1632 | for (i = 0; i < N_ENV_VARS; i++) |
69fb0241 JR |
1633 | { |
1634 | if (strcmp (env_vars[i].name, "LANG") == 0) | |
1635 | { | |
1636 | env_vars[i].def_value = locale_name; | |
1637 | break; | |
1638 | } | |
1639 | } | |
1640 | } | |
1641 | ||
ca149beb AI |
1642 | #define SET_ENV_BUF_SIZE (4 * MAX_PATH) /* to cover EMACSLOADPATH */ |
1643 | ||
1644 | /* Treat emacs_dir specially: set it unconditionally based on our | |
1645 | location, if it appears that we are running from the bin subdir | |
1646 | of a standard installation. */ | |
1647 | { | |
1648 | char *p; | |
1649 | char modname[MAX_PATH]; | |
1650 | ||
1651 | if (!GetModuleFileName (NULL, modname, MAX_PATH)) | |
1652 | abort (); | |
1653 | if ((p = strrchr (modname, '\\')) == NULL) | |
1654 | abort (); | |
1655 | *p = 0; | |
1656 | ||
05131107 | 1657 | if ((p = strrchr (modname, '\\')) && xstrcasecmp (p, "\\bin") == 0) |
ca149beb AI |
1658 | { |
1659 | char buf[SET_ENV_BUF_SIZE]; | |
1660 | ||
1661 | *p = 0; | |
1662 | for (p = modname; *p; p++) | |
1663 | if (*p == '\\') *p = '/'; | |
177c0ea7 | 1664 | |
ed3751c8 | 1665 | _snprintf (buf, sizeof (buf)-1, "emacs_dir=%s", modname); |
a302c7ae | 1666 | _putenv (strdup (buf)); |
ca149beb | 1667 | } |
950090be JR |
1668 | /* Handle running emacs from the build directory: src/oo-spd/i386/ */ |
1669 | ||
1670 | /* FIXME: should use substring of get_emacs_configuration (). | |
1671 | But I don't think the Windows build supports alpha, mips etc | |
1672 | anymore, so have taken the easy option for now. */ | |
05131107 | 1673 | else if (p && xstrcasecmp (p, "\\i386") == 0) |
950090be JR |
1674 | { |
1675 | *p = 0; | |
1676 | p = strrchr (modname, '\\'); | |
1677 | if (p != NULL) | |
1678 | { | |
1679 | *p = 0; | |
1680 | p = strrchr (modname, '\\'); | |
05131107 | 1681 | if (p && xstrcasecmp (p, "\\src") == 0) |
950090be JR |
1682 | { |
1683 | char buf[SET_ENV_BUF_SIZE]; | |
1684 | ||
1685 | *p = 0; | |
1686 | for (p = modname; *p; p++) | |
1687 | if (*p == '\\') *p = '/'; | |
1688 | ||
ed3751c8 | 1689 | _snprintf (buf, sizeof (buf)-1, "emacs_dir=%s", modname); |
950090be JR |
1690 | _putenv (strdup (buf)); |
1691 | } | |
1692 | } | |
1693 | } | |
ca149beb AI |
1694 | } |
1695 | ||
e00b99c8 | 1696 | for (i = 0; i < N_ENV_VARS; i++) |
f332b293 | 1697 | { |
ca149beb | 1698 | if (!getenv (env_vars[i].name)) |
480b0c5b | 1699 | { |
ca149beb | 1700 | int dont_free = 0; |
480b0c5b | 1701 | |
aa5ee2a3 JB |
1702 | if ((lpval = w32_get_resource (env_vars[i].name, &dwType)) == NULL |
1703 | /* Also ignore empty environment variables. */ | |
1704 | || *lpval == 0) | |
ca149beb | 1705 | { |
70fdbb46 | 1706 | xfree (lpval); |
ca149beb AI |
1707 | lpval = env_vars[i].def_value; |
1708 | dwType = REG_EXPAND_SZ; | |
1709 | dont_free = 1; | |
fdc5744d JB |
1710 | if (!strcmp (env_vars[i].name, "HOME") && !appdata) |
1711 | { | |
1712 | Lisp_Object warning[2]; | |
1713 | warning[0] = intern ("initialization"); | |
1714 | warning[1] = build_string ("Setting HOME to C:\\ by default is deprecated"); | |
1715 | Vdelayed_warnings_list = Fcons (Flist (2, warning), | |
1716 | Vdelayed_warnings_list); | |
1717 | } | |
480b0c5b | 1718 | } |
ca149beb AI |
1719 | |
1720 | if (lpval) | |
480b0c5b | 1721 | { |
892eb237 | 1722 | char buf1[SET_ENV_BUF_SIZE], buf2[SET_ENV_BUF_SIZE]; |
ca149beb | 1723 | |
892eb237 | 1724 | if (dwType == REG_EXPAND_SZ) |
ed3751c8 | 1725 | ExpandEnvironmentStrings ((LPSTR) lpval, buf1, sizeof (buf1)); |
ca149beb | 1726 | else if (dwType == REG_SZ) |
892eb237 EZ |
1727 | strcpy (buf1, lpval); |
1728 | if (dwType == REG_EXPAND_SZ || dwType == REG_SZ) | |
ca149beb | 1729 | { |
ed3751c8 | 1730 | _snprintf (buf2, sizeof (buf2)-1, "%s=%s", env_vars[i].name, |
892eb237 EZ |
1731 | buf1); |
1732 | _putenv (strdup (buf2)); | |
ca149beb | 1733 | } |
f332b293 | 1734 | |
ca149beb AI |
1735 | if (!dont_free) |
1736 | xfree (lpval); | |
1737 | } | |
480b0c5b GV |
1738 | } |
1739 | } | |
1740 | } | |
1741 | ||
75b08edb GV |
1742 | /* Rebuild system configuration to reflect invoking system. */ |
1743 | Vsystem_configuration = build_string (EMACS_CONFIGURATION); | |
1744 | ||
76b3903d GV |
1745 | /* Another special case: on NT, the PATH variable is actually named |
1746 | "Path" although cmd.exe (perhaps NT itself) arranges for | |
1747 | environment variable lookup and setting to be case insensitive. | |
1748 | However, Emacs assumes a fully case sensitive environment, so we | |
1749 | need to change "Path" to "PATH" to match the expectations of | |
1750 | various elisp packages. We do this by the sneaky method of | |
1751 | modifying the string in the C runtime environ entry. | |
1752 | ||
1753 | The same applies to COMSPEC. */ | |
1754 | { | |
1755 | char ** envp; | |
1756 | ||
1757 | for (envp = environ; *envp; envp++) | |
1758 | if (_strnicmp (*envp, "PATH=", 5) == 0) | |
1759 | memcpy (*envp, "PATH=", 5); | |
1760 | else if (_strnicmp (*envp, "COMSPEC=", 8) == 0) | |
1761 | memcpy (*envp, "COMSPEC=", 8); | |
1762 | } | |
1763 | ||
1764 | /* Remember the initial working directory for getwd, then make the | |
1765 | real wd be the location of emacs.exe to avoid conflicts when | |
1766 | renaming or deleting directories. (We also don't call chdir when | |
1767 | running subprocesses for the same reason.) */ | |
1768 | if (!GetCurrentDirectory (MAXPATHLEN, startup_dir)) | |
1769 | abort (); | |
1770 | ||
1771 | { | |
1772 | char *p; | |
aa7b87b0 | 1773 | static char modname[MAX_PATH]; |
76b3903d GV |
1774 | |
1775 | if (!GetModuleFileName (NULL, modname, MAX_PATH)) | |
1776 | abort (); | |
1777 | if ((p = strrchr (modname, '\\')) == NULL) | |
1778 | abort (); | |
1779 | *p = 0; | |
1780 | ||
1781 | SetCurrentDirectory (modname); | |
aa7b87b0 AI |
1782 | |
1783 | /* Ensure argv[0] has the full path to Emacs. */ | |
1784 | *p = '\\'; | |
1785 | argv[0] = modname; | |
76b3903d GV |
1786 | } |
1787 | ||
20af4831 JR |
1788 | /* Determine if there is a middle mouse button, to allow parse_button |
1789 | to decide whether right mouse events should be mouse-2 or | |
1790 | mouse-3. */ | |
e0c181dd | 1791 | w32_num_mouse_buttons = GetSystemMetrics (SM_CMOUSEBUTTONS); |
20af4831 | 1792 | |
480b0c5b GV |
1793 | init_user_info (); |
1794 | } | |
1795 | ||
bf794306 EZ |
1796 | char * |
1797 | emacs_root_dir (void) | |
1798 | { | |
1799 | static char root_dir[FILENAME_MAX]; | |
1800 | const char *p; | |
1801 | ||
1802 | p = getenv ("emacs_dir"); | |
1803 | if (p == NULL) | |
1804 | abort (); | |
1805 | strcpy (root_dir, p); | |
1806 | root_dir[parse_root (root_dir, NULL)] = '\0'; | |
1807 | dostounix_filename (root_dir); | |
1808 | return root_dir; | |
1809 | } | |
1810 | ||
480b0c5b GV |
1811 | /* We don't have scripts to automatically determine the system configuration |
1812 | for Emacs before it's compiled, and we don't want to have to make the | |
1813 | user enter it, so we define EMACS_CONFIGURATION to invoke this runtime | |
1814 | routine. */ | |
1815 | ||
480b0c5b GV |
1816 | char * |
1817 | get_emacs_configuration (void) | |
1818 | { | |
1819 | char *arch, *oem, *os; | |
c5247da2 | 1820 | int build_num; |
a302c7ae | 1821 | static char configuration_buffer[32]; |
480b0c5b GV |
1822 | |
1823 | /* Determine the processor type. */ | |
177c0ea7 | 1824 | switch (get_processor_type ()) |
480b0c5b GV |
1825 | { |
1826 | ||
1827 | #ifdef PROCESSOR_INTEL_386 | |
1828 | case PROCESSOR_INTEL_386: | |
1829 | case PROCESSOR_INTEL_486: | |
1830 | case PROCESSOR_INTEL_PENTIUM: | |
1831 | arch = "i386"; | |
1832 | break; | |
1833 | #endif | |
1834 | ||
480b0c5b GV |
1835 | #ifdef PROCESSOR_MIPS_R2000 |
1836 | case PROCESSOR_MIPS_R2000: | |
1837 | case PROCESSOR_MIPS_R3000: | |
1838 | case PROCESSOR_MIPS_R4000: | |
1839 | arch = "mips"; | |
1840 | break; | |
1841 | #endif | |
1842 | ||
1843 | #ifdef PROCESSOR_ALPHA_21064 | |
1844 | case PROCESSOR_ALPHA_21064: | |
1845 | arch = "alpha"; | |
1846 | break; | |
1847 | #endif | |
1848 | ||
1849 | default: | |
1850 | arch = "unknown"; | |
1851 | break; | |
f332b293 | 1852 | } |
480b0c5b | 1853 | |
a302c7ae AI |
1854 | /* Use the OEM field to reflect the compiler/library combination. */ |
1855 | #ifdef _MSC_VER | |
1856 | #define COMPILER_NAME "msvc" | |
1857 | #else | |
1858 | #ifdef __GNUC__ | |
1859 | #define COMPILER_NAME "mingw" | |
1860 | #else | |
1861 | #define COMPILER_NAME "unknown" | |
1862 | #endif | |
1863 | #endif | |
1864 | oem = COMPILER_NAME; | |
480b0c5b | 1865 | |
c5247da2 GV |
1866 | switch (osinfo_cache.dwPlatformId) { |
1867 | case VER_PLATFORM_WIN32_NT: | |
1868 | os = "nt"; | |
1869 | build_num = osinfo_cache.dwBuildNumber; | |
1870 | break; | |
1871 | case VER_PLATFORM_WIN32_WINDOWS: | |
1872 | if (osinfo_cache.dwMinorVersion == 0) { | |
1873 | os = "windows95"; | |
1874 | } else { | |
1875 | os = "windows98"; | |
1876 | } | |
1877 | build_num = LOWORD (osinfo_cache.dwBuildNumber); | |
1878 | break; | |
1879 | case VER_PLATFORM_WIN32s: | |
1880 | /* Not supported, should not happen. */ | |
1881 | os = "windows32s"; | |
1882 | build_num = LOWORD (osinfo_cache.dwBuildNumber); | |
1883 | break; | |
1884 | default: | |
1885 | os = "unknown"; | |
1886 | build_num = 0; | |
1887 | break; | |
1888 | } | |
1889 | ||
1890 | if (osinfo_cache.dwPlatformId == VER_PLATFORM_WIN32_NT) { | |
1891 | sprintf (configuration_buffer, "%s-%s-%s%d.%d.%d", arch, oem, os, | |
1892 | get_w32_major_version (), get_w32_minor_version (), build_num); | |
1893 | } else { | |
1894 | sprintf (configuration_buffer, "%s-%s-%s.%d", arch, oem, os, build_num); | |
1895 | } | |
480b0c5b | 1896 | |
480b0c5b | 1897 | return configuration_buffer; |
f332b293 GV |
1898 | } |
1899 | ||
a302c7ae AI |
1900 | char * |
1901 | get_emacs_configuration_options (void) | |
1902 | { | |
38c54d9d JB |
1903 | static char *options_buffer; |
1904 | char cv[32]; /* Enough for COMPILER_VERSION. */ | |
1905 | char *options[] = { | |
1906 | cv, /* To be filled later. */ | |
1907 | #ifdef EMACSDEBUG | |
1908 | " --no-opt", | |
1909 | #endif | |
1910 | /* configure.bat already sets USER_CFLAGS and USER_LDFLAGS | |
1911 | with a starting space to save work here. */ | |
1912 | #ifdef USER_CFLAGS | |
1913 | " --cflags", USER_CFLAGS, | |
1914 | #endif | |
1915 | #ifdef USER_LDFLAGS | |
1916 | " --ldflags", USER_LDFLAGS, | |
1917 | #endif | |
1918 | NULL | |
1919 | }; | |
1920 | size_t size = 0; | |
1921 | int i; | |
a302c7ae AI |
1922 | |
1923 | /* Work out the effective configure options for this build. */ | |
1924 | #ifdef _MSC_VER | |
1925 | #define COMPILER_VERSION "--with-msvc (%d.%02d)", _MSC_VER / 100, _MSC_VER % 100 | |
1926 | #else | |
1927 | #ifdef __GNUC__ | |
1928 | #define COMPILER_VERSION "--with-gcc (%d.%d)", __GNUC__, __GNUC_MINOR__ | |
1929 | #else | |
1930 | #define COMPILER_VERSION "" | |
1931 | #endif | |
1932 | #endif | |
1933 | ||
83e245c4 | 1934 | if (_snprintf (cv, sizeof (cv) - 1, COMPILER_VERSION) < 0) |
38c54d9d | 1935 | return "Error: not enough space for compiler version"; |
83e245c4 | 1936 | cv[sizeof (cv) - 1] = '\0'; |
38c54d9d JB |
1937 | |
1938 | for (i = 0; options[i]; i++) | |
1939 | size += strlen (options[i]); | |
1940 | ||
1941 | options_buffer = xmalloc (size + 1); | |
fc33e153 | 1942 | options_buffer[0] = '\0'; |
38c54d9d JB |
1943 | |
1944 | for (i = 0; options[i]; i++) | |
1945 | strcat (options_buffer, options[i]); | |
1946 | ||
a302c7ae AI |
1947 | return options_buffer; |
1948 | } | |
1949 | ||
1950 | ||
35f0d482 KH |
1951 | #include <sys/timeb.h> |
1952 | ||
1953 | /* Emulate gettimeofday (Ulrich Leodolter, 1/11/95). */ | |
177c0ea7 | 1954 | void |
35f0d482 KH |
1955 | gettimeofday (struct timeval *tv, struct timezone *tz) |
1956 | { | |
6e602566 | 1957 | struct _timeb tb; |
35f0d482 KH |
1958 | _ftime (&tb); |
1959 | ||
1960 | tv->tv_sec = tb.time; | |
1961 | tv->tv_usec = tb.millitm * 1000L; | |
97a93095 EZ |
1962 | /* Implementation note: _ftime sometimes doesn't update the dstflag |
1963 | according to the new timezone when the system timezone is | |
1964 | changed. We could fix that by using GetSystemTime and | |
1965 | GetTimeZoneInformation, but that doesn't seem necessary, since | |
1966 | Emacs always calls gettimeofday with the 2nd argument NULL (see | |
1967 | EMACS_GET_TIME). */ | |
177c0ea7 | 1968 | if (tz) |
35f0d482 KH |
1969 | { |
1970 | tz->tz_minuteswest = tb.timezone; /* minutes west of Greenwich */ | |
1971 | tz->tz_dsttime = tb.dstflag; /* type of dst correction */ | |
1972 | } | |
1973 | } | |
35f0d482 | 1974 | |
480b0c5b | 1975 | /* ------------------------------------------------------------------------- */ |
fbd6baed | 1976 | /* IO support and wrapper functions for W32 API. */ |
480b0c5b | 1977 | /* ------------------------------------------------------------------------- */ |
95ed0025 | 1978 | |
480b0c5b | 1979 | /* Place a wrapper around the MSVC version of ctime. It returns NULL |
177c0ea7 | 1980 | on network directories, so we handle that case here. |
480b0c5b GV |
1981 | (Ulrich Leodolter, 1/11/95). */ |
1982 | char * | |
1983 | sys_ctime (const time_t *t) | |
1984 | { | |
1985 | char *str = (char *) ctime (t); | |
1986 | return (str ? str : "Sun Jan 01 00:00:00 1970"); | |
1987 | } | |
1988 | ||
1989 | /* Emulate sleep...we could have done this with a define, but that | |
1990 | would necessitate including windows.h in the files that used it. | |
1991 | This is much easier. */ | |
1992 | void | |
1993 | sys_sleep (int seconds) | |
1994 | { | |
1995 | Sleep (seconds * 1000); | |
1996 | } | |
1997 | ||
76b3903d | 1998 | /* Internal MSVC functions for low-level descriptor munging */ |
480b0c5b GV |
1999 | extern int __cdecl _set_osfhnd (int fd, long h); |
2000 | extern int __cdecl _free_osfhnd (int fd); | |
2001 | ||
2002 | /* parallel array of private info on file handles */ | |
2003 | filedesc fd_info [ MAXDESC ]; | |
2004 | ||
76b3903d GV |
2005 | typedef struct volume_info_data { |
2006 | struct volume_info_data * next; | |
2007 | ||
2008 | /* time when info was obtained */ | |
2009 | DWORD timestamp; | |
2010 | ||
2011 | /* actual volume info */ | |
2012 | char * root_dir; | |
480b0c5b GV |
2013 | DWORD serialnum; |
2014 | DWORD maxcomp; | |
2015 | DWORD flags; | |
76b3903d GV |
2016 | char * name; |
2017 | char * type; | |
2018 | } volume_info_data; | |
2019 | ||
2020 | /* Global referenced by various functions. */ | |
2021 | static volume_info_data volume_info; | |
2022 | ||
2023 | /* Vector to indicate which drives are local and fixed (for which cached | |
2024 | data never expires). */ | |
2025 | static BOOL fixed_drives[26]; | |
2026 | ||
2027 | /* Consider cached volume information to be stale if older than 10s, | |
2028 | at least for non-local drives. Info for fixed drives is never stale. */ | |
2029 | #define DRIVE_INDEX( c ) ( (c) <= 'Z' ? (c) - 'A' : (c) - 'a' ) | |
2030 | #define VOLINFO_STILL_VALID( root_dir, info ) \ | |
2031 | ( ( isalpha (root_dir[0]) && \ | |
2032 | fixed_drives[ DRIVE_INDEX (root_dir[0]) ] ) \ | |
2033 | || GetTickCount () - info->timestamp < 10000 ) | |
2034 | ||
2035 | /* Cache support functions. */ | |
2036 | ||
2037 | /* Simple linked list with linear search is sufficient. */ | |
2038 | static volume_info_data *volume_cache = NULL; | |
2039 | ||
2040 | static volume_info_data * | |
2041 | lookup_volume_info (char * root_dir) | |
2042 | { | |
2043 | volume_info_data * info; | |
2044 | ||
2045 | for (info = volume_cache; info; info = info->next) | |
05131107 | 2046 | if (xstrcasecmp (info->root_dir, root_dir) == 0) |
76b3903d GV |
2047 | break; |
2048 | return info; | |
2049 | } | |
2050 | ||
2051 | static void | |
2052 | add_volume_info (char * root_dir, volume_info_data * info) | |
2053 | { | |
a302c7ae | 2054 | info->root_dir = xstrdup (root_dir); |
76b3903d GV |
2055 | info->next = volume_cache; |
2056 | volume_cache = info; | |
2057 | } | |
2058 | ||
2059 | ||
2060 | /* Wrapper for GetVolumeInformation, which uses caching to avoid | |
2061 | performance penalty (~2ms on 486 for local drives, 7.5ms for local | |
2062 | cdrom drive, ~5-10ms or more for remote drives on LAN). */ | |
bedf4aab | 2063 | static volume_info_data * |
76b3903d GV |
2064 | GetCachedVolumeInformation (char * root_dir) |
2065 | { | |
2066 | volume_info_data * info; | |
2067 | char default_root[ MAX_PATH ]; | |
2068 | ||
2069 | /* NULL for root_dir means use root from current directory. */ | |
2070 | if (root_dir == NULL) | |
2071 | { | |
2072 | if (GetCurrentDirectory (MAX_PATH, default_root) == 0) | |
2073 | return NULL; | |
2074 | parse_root (default_root, &root_dir); | |
2075 | *root_dir = 0; | |
2076 | root_dir = default_root; | |
2077 | } | |
2078 | ||
2079 | /* Local fixed drives can be cached permanently. Removable drives | |
2080 | cannot be cached permanently, since the volume name and serial | |
2081 | number (if nothing else) can change. Remote drives should be | |
2082 | treated as if they are removable, since there is no sure way to | |
2083 | tell whether they are or not. Also, the UNC association of drive | |
2084 | letters mapped to remote volumes can be changed at any time (even | |
2085 | by other processes) without notice. | |
177c0ea7 | 2086 | |
76b3903d GV |
2087 | As a compromise, so we can benefit from caching info for remote |
2088 | volumes, we use a simple expiry mechanism to invalidate cache | |
2089 | entries that are more than ten seconds old. */ | |
2090 | ||
2091 | #if 0 | |
2092 | /* No point doing this, because WNetGetConnection is even slower than | |
2093 | GetVolumeInformation, consistently taking ~50ms on a 486 (FWIW, | |
2094 | GetDriveType is about the only call of this type which does not | |
2095 | involve network access, and so is extremely quick). */ | |
2096 | ||
2097 | /* Map drive letter to UNC if remote. */ | |
ed3751c8 | 2098 | if (isalpha (root_dir[0]) && !fixed[DRIVE_INDEX (root_dir[0])]) |
76b3903d GV |
2099 | { |
2100 | char remote_name[ 256 ]; | |
2101 | char drive[3] = { root_dir[0], ':' }; | |
2102 | ||
2103 | if (WNetGetConnection (drive, remote_name, sizeof (remote_name)) | |
2104 | == NO_ERROR) | |
2105 | /* do something */ ; | |
2106 | } | |
2107 | #endif | |
2108 | ||
2109 | info = lookup_volume_info (root_dir); | |
2110 | ||
2111 | if (info == NULL || ! VOLINFO_STILL_VALID (root_dir, info)) | |
94eab1c8 JB |
2112 | { |
2113 | char name[ 256 ]; | |
2114 | DWORD serialnum; | |
2115 | DWORD maxcomp; | |
2116 | DWORD flags; | |
2117 | char type[ 256 ]; | |
2118 | ||
2119 | /* Info is not cached, or is stale. */ | |
2120 | if (!GetVolumeInformation (root_dir, | |
2121 | name, sizeof (name), | |
2122 | &serialnum, | |
2123 | &maxcomp, | |
2124 | &flags, | |
2125 | type, sizeof (type))) | |
2126 | return NULL; | |
76b3903d | 2127 | |
94eab1c8 JB |
2128 | /* Cache the volume information for future use, overwriting existing |
2129 | entry if present. */ | |
2130 | if (info == NULL) | |
2131 | { | |
2132 | info = (volume_info_data *) xmalloc (sizeof (volume_info_data)); | |
2133 | add_volume_info (root_dir, info); | |
2134 | } | |
2135 | else | |
2136 | { | |
2137 | xfree (info->name); | |
2138 | xfree (info->type); | |
2139 | } | |
2140 | ||
2141 | info->name = xstrdup (name); | |
2142 | info->serialnum = serialnum; | |
2143 | info->maxcomp = maxcomp; | |
2144 | info->flags = flags; | |
2145 | info->type = xstrdup (type); | |
2146 | info->timestamp = GetTickCount (); | |
2147 | } | |
76b3903d GV |
2148 | |
2149 | return info; | |
2150 | } | |
480b0c5b GV |
2151 | |
2152 | /* Get information on the volume where name is held; set path pointer to | |
2153 | start of pathname in name (past UNC header\volume header if present). */ | |
bedf4aab | 2154 | static int |
480b0c5b | 2155 | get_volume_info (const char * name, const char ** pPath) |
95ed0025 | 2156 | { |
480b0c5b GV |
2157 | char temp[MAX_PATH]; |
2158 | char *rootname = NULL; /* default to current volume */ | |
76b3903d | 2159 | volume_info_data * info; |
480b0c5b GV |
2160 | |
2161 | if (name == NULL) | |
2162 | return FALSE; | |
2163 | ||
2164 | /* find the root name of the volume if given */ | |
2165 | if (isalpha (name[0]) && name[1] == ':') | |
2166 | { | |
2167 | rootname = temp; | |
2168 | temp[0] = *name++; | |
2169 | temp[1] = *name++; | |
2170 | temp[2] = '\\'; | |
2171 | temp[3] = 0; | |
2172 | } | |
2173 | else if (IS_DIRECTORY_SEP (name[0]) && IS_DIRECTORY_SEP (name[1])) | |
95ed0025 | 2174 | { |
480b0c5b GV |
2175 | char *str = temp; |
2176 | int slashes = 4; | |
2177 | rootname = temp; | |
2178 | do | |
2179 | { | |
2180 | if (IS_DIRECTORY_SEP (*name) && --slashes == 0) | |
2181 | break; | |
2182 | *str++ = *name++; | |
2183 | } | |
2184 | while ( *name ); | |
2185 | ||
480b0c5b GV |
2186 | *str++ = '\\'; |
2187 | *str = 0; | |
95ed0025 | 2188 | } |
480b0c5b GV |
2189 | |
2190 | if (pPath) | |
2191 | *pPath = name; | |
177c0ea7 | 2192 | |
76b3903d GV |
2193 | info = GetCachedVolumeInformation (rootname); |
2194 | if (info != NULL) | |
95ed0025 | 2195 | { |
76b3903d GV |
2196 | /* Set global referenced by other functions. */ |
2197 | volume_info = *info; | |
480b0c5b | 2198 | return TRUE; |
95ed0025 | 2199 | } |
480b0c5b GV |
2200 | return FALSE; |
2201 | } | |
2202 | ||
2203 | /* Determine if volume is FAT format (ie. only supports short 8.3 | |
2204 | names); also set path pointer to start of pathname in name. */ | |
bedf4aab | 2205 | static int |
480b0c5b GV |
2206 | is_fat_volume (const char * name, const char ** pPath) |
2207 | { | |
2208 | if (get_volume_info (name, pPath)) | |
2209 | return (volume_info.maxcomp == 12); | |
2210 | return FALSE; | |
2211 | } | |
2212 | ||
4d90eee4 | 2213 | /* Map filename to a valid 8.3 name if necessary. */ |
480b0c5b | 2214 | const char * |
fbd6baed | 2215 | map_w32_filename (const char * name, const char ** pPath) |
480b0c5b GV |
2216 | { |
2217 | static char shortname[MAX_PATH]; | |
2218 | char * str = shortname; | |
2219 | char c; | |
480b0c5b | 2220 | char * path; |
76b3903d | 2221 | const char * save_name = name; |
480b0c5b | 2222 | |
ca149beb AI |
2223 | if (strlen (name) >= MAX_PATH) |
2224 | { | |
2225 | /* Return a filename which will cause callers to fail. */ | |
2226 | strcpy (shortname, "?"); | |
2227 | return shortname; | |
2228 | } | |
2229 | ||
a302c7ae | 2230 | if (is_fat_volume (name, (const char **)&path)) /* truncate to 8.3 */ |
95ed0025 | 2231 | { |
480b0c5b GV |
2232 | register int left = 8; /* maximum number of chars in part */ |
2233 | register int extn = 0; /* extension added? */ | |
2234 | register int dots = 2; /* maximum number of dots allowed */ | |
2235 | ||
2236 | while (name < path) | |
2237 | *str++ = *name++; /* skip past UNC header */ | |
2238 | ||
2239 | while ((c = *name++)) | |
2240 | { | |
2241 | switch ( c ) | |
2242 | { | |
2243 | case '\\': | |
2244 | case '/': | |
2245 | *str++ = '\\'; | |
2246 | extn = 0; /* reset extension flags */ | |
2247 | dots = 2; /* max 2 dots */ | |
2248 | left = 8; /* max length 8 for main part */ | |
2249 | break; | |
2250 | case ':': | |
2251 | *str++ = ':'; | |
2252 | extn = 0; /* reset extension flags */ | |
2253 | dots = 2; /* max 2 dots */ | |
2254 | left = 8; /* max length 8 for main part */ | |
2255 | break; | |
2256 | case '.': | |
2257 | if ( dots ) | |
2258 | { | |
2259 | /* Convert path components of the form .xxx to _xxx, | |
2260 | but leave . and .. as they are. This allows .emacs | |
2261 | to be read as _emacs, for example. */ | |
2262 | ||
2263 | if (! *name || | |
2264 | *name == '.' || | |
2265 | IS_DIRECTORY_SEP (*name)) | |
2266 | { | |
2267 | *str++ = '.'; | |
2268 | dots--; | |
2269 | } | |
2270 | else | |
2271 | { | |
2272 | *str++ = '_'; | |
2273 | left--; | |
2274 | dots = 0; | |
2275 | } | |
2276 | } | |
2277 | else if ( !extn ) | |
2278 | { | |
2279 | *str++ = '.'; | |
2280 | extn = 1; /* we've got an extension */ | |
2281 | left = 3; /* 3 chars in extension */ | |
2282 | } | |
2283 | else | |
2284 | { | |
2285 | /* any embedded dots after the first are converted to _ */ | |
2286 | *str++ = '_'; | |
2287 | } | |
2288 | break; | |
2289 | case '~': | |
2290 | case '#': /* don't lose these, they're important */ | |
2291 | if ( ! left ) | |
2292 | str[-1] = c; /* replace last character of part */ | |
2293 | /* FALLTHRU */ | |
2294 | default: | |
2295 | if ( left ) | |
2296 | { | |
2297 | *str++ = tolower (c); /* map to lower case (looks nicer) */ | |
2298 | left--; | |
2299 | dots = 0; /* started a path component */ | |
2300 | } | |
2301 | break; | |
2302 | } | |
2303 | } | |
2304 | *str = '\0'; | |
fc85cb29 RS |
2305 | } |
2306 | else | |
2307 | { | |
2308 | strcpy (shortname, name); | |
2309 | unixtodos_filename (shortname); | |
95ed0025 | 2310 | } |
480b0c5b GV |
2311 | |
2312 | if (pPath) | |
76b3903d | 2313 | *pPath = shortname + (path - save_name); |
480b0c5b | 2314 | |
fc85cb29 | 2315 | return shortname; |
480b0c5b GV |
2316 | } |
2317 | ||
b3308d2e KH |
2318 | static int |
2319 | is_exec (const char * name) | |
2320 | { | |
2321 | char * p = strrchr (name, '.'); | |
2322 | return | |
2323 | (p != NULL | |
05131107 JR |
2324 | && (xstrcasecmp (p, ".exe") == 0 || |
2325 | xstrcasecmp (p, ".com") == 0 || | |
2326 | xstrcasecmp (p, ".bat") == 0 || | |
2327 | xstrcasecmp (p, ".cmd") == 0)); | |
b3308d2e KH |
2328 | } |
2329 | ||
177c0ea7 | 2330 | /* Emulate the Unix directory procedures opendir, closedir, |
76b3903d GV |
2331 | and readdir. We can't use the procedures supplied in sysdep.c, |
2332 | so we provide them here. */ | |
2333 | ||
2334 | struct direct dir_static; /* simulated directory contents */ | |
2335 | static HANDLE dir_find_handle = INVALID_HANDLE_VALUE; | |
2336 | static int dir_is_fat; | |
2337 | static char dir_pathname[MAXPATHLEN+1]; | |
2338 | static WIN32_FIND_DATA dir_find_data; | |
2339 | ||
9d3355d1 GV |
2340 | /* Support shares on a network resource as subdirectories of a read-only |
2341 | root directory. */ | |
2342 | static HANDLE wnet_enum_handle = INVALID_HANDLE_VALUE; | |
bedf4aab JB |
2343 | static HANDLE open_unc_volume (const char *); |
2344 | static char *read_unc_volume (HANDLE, char *, int); | |
2345 | static void close_unc_volume (HANDLE); | |
9d3355d1 | 2346 | |
76b3903d GV |
2347 | DIR * |
2348 | opendir (char *filename) | |
2349 | { | |
2350 | DIR *dirp; | |
2351 | ||
2352 | /* Opening is done by FindFirstFile. However, a read is inherent to | |
2353 | this operation, so we defer the open until read time. */ | |
2354 | ||
76b3903d GV |
2355 | if (dir_find_handle != INVALID_HANDLE_VALUE) |
2356 | return NULL; | |
9d3355d1 GV |
2357 | if (wnet_enum_handle != INVALID_HANDLE_VALUE) |
2358 | return NULL; | |
2359 | ||
2360 | if (is_unc_volume (filename)) | |
2361 | { | |
2362 | wnet_enum_handle = open_unc_volume (filename); | |
2363 | if (wnet_enum_handle == INVALID_HANDLE_VALUE) | |
2364 | return NULL; | |
2365 | } | |
2366 | ||
2367 | if (!(dirp = (DIR *) malloc (sizeof (DIR)))) | |
2368 | return NULL; | |
76b3903d GV |
2369 | |
2370 | dirp->dd_fd = 0; | |
2371 | dirp->dd_loc = 0; | |
2372 | dirp->dd_size = 0; | |
2373 | ||
2374 | strncpy (dir_pathname, map_w32_filename (filename, NULL), MAXPATHLEN); | |
2375 | dir_pathname[MAXPATHLEN] = '\0'; | |
2376 | dir_is_fat = is_fat_volume (filename, NULL); | |
2377 | ||
2378 | return dirp; | |
2379 | } | |
2380 | ||
2381 | void | |
2382 | closedir (DIR *dirp) | |
2383 | { | |
2384 | /* If we have a find-handle open, close it. */ | |
2385 | if (dir_find_handle != INVALID_HANDLE_VALUE) | |
2386 | { | |
2387 | FindClose (dir_find_handle); | |
2388 | dir_find_handle = INVALID_HANDLE_VALUE; | |
2389 | } | |
9d3355d1 GV |
2390 | else if (wnet_enum_handle != INVALID_HANDLE_VALUE) |
2391 | { | |
2392 | close_unc_volume (wnet_enum_handle); | |
2393 | wnet_enum_handle = INVALID_HANDLE_VALUE; | |
2394 | } | |
76b3903d GV |
2395 | xfree ((char *) dirp); |
2396 | } | |
2397 | ||
2398 | struct direct * | |
2399 | readdir (DIR *dirp) | |
2400 | { | |
b07103dc EZ |
2401 | int downcase = !NILP (Vw32_downcase_file_names); |
2402 | ||
9d3355d1 GV |
2403 | if (wnet_enum_handle != INVALID_HANDLE_VALUE) |
2404 | { | |
177c0ea7 | 2405 | if (!read_unc_volume (wnet_enum_handle, |
59eb0929 JB |
2406 | dir_find_data.cFileName, |
2407 | MAX_PATH)) | |
9d3355d1 GV |
2408 | return NULL; |
2409 | } | |
76b3903d | 2410 | /* If we aren't dir_finding, do a find-first, otherwise do a find-next. */ |
9d3355d1 | 2411 | else if (dir_find_handle == INVALID_HANDLE_VALUE) |
76b3903d GV |
2412 | { |
2413 | char filename[MAXNAMLEN + 3]; | |
2414 | int ln; | |
2415 | ||
2416 | strcpy (filename, dir_pathname); | |
2417 | ln = strlen (filename) - 1; | |
2418 | if (!IS_DIRECTORY_SEP (filename[ln])) | |
2419 | strcat (filename, "\\"); | |
2420 | strcat (filename, "*"); | |
2421 | ||
2422 | dir_find_handle = FindFirstFile (filename, &dir_find_data); | |
2423 | ||
2424 | if (dir_find_handle == INVALID_HANDLE_VALUE) | |
2425 | return NULL; | |
2426 | } | |
2427 | else | |
2428 | { | |
2429 | if (!FindNextFile (dir_find_handle, &dir_find_data)) | |
2430 | return NULL; | |
2431 | } | |
177c0ea7 | 2432 | |
76b3903d GV |
2433 | /* Emacs never uses this value, so don't bother making it match |
2434 | value returned by stat(). */ | |
2435 | dir_static.d_ino = 1; | |
177c0ea7 | 2436 | |
b07103dc EZ |
2437 | strcpy (dir_static.d_name, dir_find_data.cFileName); |
2438 | ||
2439 | /* If the file name in cFileName[] includes `?' characters, it means | |
2440 | the original file name used characters that cannot be represented | |
2441 | by the current ANSI codepage. To avoid total lossage, retrieve | |
2442 | the short 8+3 alias of the long file name. */ | |
2443 | if (_mbspbrk (dir_static.d_name, "?")) | |
2444 | { | |
2445 | strcpy (dir_static.d_name, dir_find_data.cAlternateFileName); | |
2446 | downcase = 1; /* 8+3 aliases are returned in all caps */ | |
2447 | } | |
2448 | dir_static.d_namlen = strlen (dir_static.d_name); | |
76b3903d GV |
2449 | dir_static.d_reclen = sizeof (struct direct) - MAXNAMLEN + 3 + |
2450 | dir_static.d_namlen - dir_static.d_namlen % 4; | |
177c0ea7 | 2451 | |
192788d7 EZ |
2452 | /* If the file name in cFileName[] includes `?' characters, it means |
2453 | the original file name used characters that cannot be represented | |
2454 | by the current ANSI codepage. To avoid total lossage, retrieve | |
2455 | the short 8+3 alias of the long file name. */ | |
2456 | if (_mbspbrk (dir_find_data.cFileName, "?")) | |
2457 | { | |
2458 | strcpy (dir_static.d_name, dir_find_data.cAlternateFileName); | |
2459 | /* 8+3 aliases are returned in all caps, which could break | |
2460 | various alists that look at filenames' extensions. */ | |
2461 | downcase = 1; | |
2462 | } | |
2463 | else | |
2464 | strcpy (dir_static.d_name, dir_find_data.cFileName); | |
2465 | dir_static.d_namlen = strlen (dir_static.d_name); | |
76b3903d GV |
2466 | if (dir_is_fat) |
2467 | _strlwr (dir_static.d_name); | |
b07103dc | 2468 | else if (downcase) |
76b3903d GV |
2469 | { |
2470 | register char *p; | |
2471 | for (p = dir_static.d_name; *p; p++) | |
2472 | if (*p >= 'a' && *p <= 'z') | |
2473 | break; | |
2474 | if (!*p) | |
2475 | _strlwr (dir_static.d_name); | |
2476 | } | |
177c0ea7 | 2477 | |
76b3903d GV |
2478 | return &dir_static; |
2479 | } | |
2480 | ||
bedf4aab | 2481 | static HANDLE |
e0c181dd | 2482 | open_unc_volume (const char *path) |
9d3355d1 | 2483 | { |
177c0ea7 | 2484 | NETRESOURCE nr; |
9d3355d1 GV |
2485 | HANDLE henum; |
2486 | int result; | |
2487 | ||
177c0ea7 JB |
2488 | nr.dwScope = RESOURCE_GLOBALNET; |
2489 | nr.dwType = RESOURCETYPE_DISK; | |
2490 | nr.dwDisplayType = RESOURCEDISPLAYTYPE_SERVER; | |
2491 | nr.dwUsage = RESOURCEUSAGE_CONTAINER; | |
2492 | nr.lpLocalName = NULL; | |
6e602566 | 2493 | nr.lpRemoteName = (LPSTR)map_w32_filename (path, NULL); |
177c0ea7 JB |
2494 | nr.lpComment = NULL; |
2495 | nr.lpProvider = NULL; | |
9d3355d1 | 2496 | |
ed3751c8 JB |
2497 | result = WNetOpenEnum (RESOURCE_GLOBALNET, RESOURCETYPE_DISK, |
2498 | RESOURCEUSAGE_CONNECTABLE, &nr, &henum); | |
9d3355d1 GV |
2499 | |
2500 | if (result == NO_ERROR) | |
2501 | return henum; | |
2502 | else | |
2503 | return INVALID_HANDLE_VALUE; | |
2504 | } | |
2505 | ||
bedf4aab | 2506 | static char * |
9d3355d1 GV |
2507 | read_unc_volume (HANDLE henum, char *readbuf, int size) |
2508 | { | |
a302c7ae | 2509 | DWORD count; |
9d3355d1 | 2510 | int result; |
a302c7ae | 2511 | DWORD bufsize = 512; |
9d3355d1 GV |
2512 | char *buffer; |
2513 | char *ptr; | |
2514 | ||
2515 | count = 1; | |
2516 | buffer = alloca (bufsize); | |
59eb0929 | 2517 | result = WNetEnumResource (henum, &count, buffer, &bufsize); |
9d3355d1 GV |
2518 | if (result != NO_ERROR) |
2519 | return NULL; | |
2520 | ||
2521 | /* WNetEnumResource returns \\resource\share...skip forward to "share". */ | |
2522 | ptr = ((LPNETRESOURCE) buffer)->lpRemoteName; | |
2523 | ptr += 2; | |
2524 | while (*ptr && !IS_DIRECTORY_SEP (*ptr)) ptr++; | |
2525 | ptr++; | |
2526 | ||
2527 | strncpy (readbuf, ptr, size); | |
2528 | return readbuf; | |
2529 | } | |
2530 | ||
bedf4aab | 2531 | static void |
9d3355d1 GV |
2532 | close_unc_volume (HANDLE henum) |
2533 | { | |
2534 | if (henum != INVALID_HANDLE_VALUE) | |
2535 | WNetCloseEnum (henum); | |
2536 | } | |
2537 | ||
bedf4aab | 2538 | static DWORD |
e0c181dd | 2539 | unc_volume_file_attributes (const char *path) |
9d3355d1 GV |
2540 | { |
2541 | HANDLE henum; | |
2542 | DWORD attrs; | |
2543 | ||
2544 | henum = open_unc_volume (path); | |
2545 | if (henum == INVALID_HANDLE_VALUE) | |
2546 | return -1; | |
2547 | ||
2548 | attrs = FILE_ATTRIBUTE_READONLY | FILE_ATTRIBUTE_DIRECTORY; | |
2549 | ||
2550 | close_unc_volume (henum); | |
2551 | ||
2552 | return attrs; | |
2553 | } | |
2554 | ||
302d7d54 JR |
2555 | /* Ensure a network connection is authenticated. */ |
2556 | static void | |
2557 | logon_network_drive (const char *path) | |
2558 | { | |
2559 | NETRESOURCE resource; | |
2560 | char share[MAX_PATH]; | |
2561 | int i, n_slashes; | |
40a339c8 | 2562 | char drive[4]; |
be4c6380 | 2563 | UINT drvtype; |
40a339c8 | 2564 | |
be4c6380 EZ |
2565 | if (IS_DIRECTORY_SEP (path[0]) && IS_DIRECTORY_SEP (path[1])) |
2566 | drvtype = DRIVE_REMOTE; | |
2567 | else if (path[0] == '\0' || path[1] != ':') | |
2568 | drvtype = GetDriveType (NULL); | |
2569 | else | |
2570 | { | |
2571 | drive[0] = path[0]; | |
2572 | drive[1] = ':'; | |
2573 | drive[2] = '\\'; | |
2574 | drive[3] = '\0'; | |
2575 | drvtype = GetDriveType (drive); | |
2576 | } | |
302d7d54 JR |
2577 | |
2578 | /* Only logon to networked drives. */ | |
be4c6380 | 2579 | if (drvtype != DRIVE_REMOTE) |
302d7d54 | 2580 | return; |
40a339c8 | 2581 | |
302d7d54 JR |
2582 | n_slashes = 2; |
2583 | strncpy (share, path, MAX_PATH); | |
2584 | /* Truncate to just server and share name. */ | |
2585 | for (i = 2; i < MAX_PATH; i++) | |
2586 | { | |
2587 | if (IS_DIRECTORY_SEP (share[i]) && ++n_slashes > 3) | |
2588 | { | |
2589 | share[i] = '\0'; | |
2590 | break; | |
2591 | } | |
2592 | } | |
2593 | ||
2594 | resource.dwType = RESOURCETYPE_DISK; | |
2595 | resource.lpLocalName = NULL; | |
2596 | resource.lpRemoteName = share; | |
2597 | resource.lpProvider = NULL; | |
2598 | ||
2599 | WNetAddConnection2 (&resource, NULL, NULL, CONNECT_INTERACTIVE); | |
2600 | } | |
480b0c5b GV |
2601 | |
2602 | /* Shadow some MSVC runtime functions to map requests for long filenames | |
2603 | to reasonable short names if necessary. This was originally added to | |
177c0ea7 | 2604 | permit running Emacs on NT 3.1 on a FAT partition, which doesn't support |
480b0c5b GV |
2605 | long file names. */ |
2606 | ||
2607 | int | |
2608 | sys_access (const char * path, int mode) | |
2609 | { | |
b3308d2e KH |
2610 | DWORD attributes; |
2611 | ||
2612 | /* MSVC implementation doesn't recognize D_OK. */ | |
2613 | path = map_w32_filename (path, NULL); | |
9d3355d1 GV |
2614 | if (is_unc_volume (path)) |
2615 | { | |
2616 | attributes = unc_volume_file_attributes (path); | |
2617 | if (attributes == -1) { | |
2618 | errno = EACCES; | |
2619 | return -1; | |
2620 | } | |
2621 | } | |
2622 | else if ((attributes = GetFileAttributes (path)) == -1) | |
b3308d2e KH |
2623 | { |
2624 | /* Should try mapping GetLastError to errno; for now just indicate | |
2625 | that path doesn't exist. */ | |
2626 | errno = EACCES; | |
2627 | return -1; | |
2628 | } | |
2629 | if ((mode & X_OK) != 0 && !is_exec (path)) | |
2630 | { | |
2631 | errno = EACCES; | |
2632 | return -1; | |
2633 | } | |
2634 | if ((mode & W_OK) != 0 && (attributes & FILE_ATTRIBUTE_READONLY) != 0) | |
2635 | { | |
2636 | errno = EACCES; | |
2637 | return -1; | |
2638 | } | |
2639 | if ((mode & D_OK) != 0 && (attributes & FILE_ATTRIBUTE_DIRECTORY) == 0) | |
2640 | { | |
2641 | errno = EACCES; | |
2642 | return -1; | |
2643 | } | |
2644 | return 0; | |
480b0c5b GV |
2645 | } |
2646 | ||
2647 | int | |
2648 | sys_chdir (const char * path) | |
2649 | { | |
fbd6baed | 2650 | return _chdir (map_w32_filename (path, NULL)); |
480b0c5b GV |
2651 | } |
2652 | ||
2653 | int | |
2654 | sys_chmod (const char * path, int mode) | |
2655 | { | |
fbd6baed | 2656 | return _chmod (map_w32_filename (path, NULL), mode); |
480b0c5b GV |
2657 | } |
2658 | ||
2d5ab4bf EZ |
2659 | int |
2660 | sys_chown (const char *path, uid_t owner, gid_t group) | |
2661 | { | |
e3b88685 | 2662 | if (sys_chmod (path, S_IREAD) == -1) /* check if file exists */ |
2d5ab4bf EZ |
2663 | return -1; |
2664 | return 0; | |
2665 | } | |
2666 | ||
480b0c5b GV |
2667 | int |
2668 | sys_creat (const char * path, int mode) | |
2669 | { | |
fbd6baed | 2670 | return _creat (map_w32_filename (path, NULL), mode); |
480b0c5b GV |
2671 | } |
2672 | ||
2673 | FILE * | |
b56ceb92 | 2674 | sys_fopen (const char * path, const char * mode) |
480b0c5b GV |
2675 | { |
2676 | int fd; | |
2677 | int oflag; | |
2678 | const char * mode_save = mode; | |
2679 | ||
2680 | /* Force all file handles to be non-inheritable. This is necessary to | |
2681 | ensure child processes don't unwittingly inherit handles that might | |
2682 | prevent future file access. */ | |
2683 | ||
2684 | if (mode[0] == 'r') | |
2685 | oflag = O_RDONLY; | |
2686 | else if (mode[0] == 'w' || mode[0] == 'a') | |
2687 | oflag = O_WRONLY | O_CREAT | O_TRUNC; | |
95ed0025 | 2688 | else |
480b0c5b GV |
2689 | return NULL; |
2690 | ||
2691 | /* Only do simplistic option parsing. */ | |
2692 | while (*++mode) | |
2693 | if (mode[0] == '+') | |
2694 | { | |
2695 | oflag &= ~(O_RDONLY | O_WRONLY); | |
2696 | oflag |= O_RDWR; | |
2697 | } | |
2698 | else if (mode[0] == 'b') | |
2699 | { | |
2700 | oflag &= ~O_TEXT; | |
2701 | oflag |= O_BINARY; | |
2702 | } | |
2703 | else if (mode[0] == 't') | |
2704 | { | |
2705 | oflag &= ~O_BINARY; | |
2706 | oflag |= O_TEXT; | |
2707 | } | |
2708 | else break; | |
2709 | ||
fbd6baed | 2710 | fd = _open (map_w32_filename (path, NULL), oflag | _O_NOINHERIT, 0644); |
480b0c5b GV |
2711 | if (fd < 0) |
2712 | return NULL; | |
2713 | ||
76b3903d | 2714 | return _fdopen (fd, mode_save); |
95ed0025 | 2715 | } |
480b0c5b | 2716 | |
76b3903d | 2717 | /* This only works on NTFS volumes, but is useful to have. */ |
480b0c5b | 2718 | int |
76b3903d | 2719 | sys_link (const char * old, const char * new) |
480b0c5b | 2720 | { |
76b3903d GV |
2721 | HANDLE fileh; |
2722 | int result = -1; | |
2723 | char oldname[MAX_PATH], newname[MAX_PATH]; | |
2724 | ||
2725 | if (old == NULL || new == NULL) | |
2726 | { | |
2727 | errno = ENOENT; | |
2728 | return -1; | |
2729 | } | |
2730 | ||
2731 | strcpy (oldname, map_w32_filename (old, NULL)); | |
2732 | strcpy (newname, map_w32_filename (new, NULL)); | |
2733 | ||
2734 | fileh = CreateFile (oldname, 0, 0, NULL, OPEN_EXISTING, | |
2735 | FILE_FLAG_BACKUP_SEMANTICS, NULL); | |
2736 | if (fileh != INVALID_HANDLE_VALUE) | |
2737 | { | |
2738 | int wlen; | |
2739 | ||
2740 | /* Confusingly, the "alternate" stream name field does not apply | |
2741 | when restoring a hard link, and instead contains the actual | |
2742 | stream data for the link (ie. the name of the link to create). | |
2743 | The WIN32_STREAM_ID structure before the cStreamName field is | |
2744 | the stream header, which is then immediately followed by the | |
2745 | stream data. */ | |
2746 | ||
2747 | struct { | |
2748 | WIN32_STREAM_ID wid; | |
2749 | WCHAR wbuffer[MAX_PATH]; /* extra space for link name */ | |
2750 | } data; | |
2751 | ||
2752 | wlen = MultiByteToWideChar (CP_ACP, MB_PRECOMPOSED, newname, -1, | |
2753 | data.wid.cStreamName, MAX_PATH); | |
2754 | if (wlen > 0) | |
2755 | { | |
2756 | LPVOID context = NULL; | |
2757 | DWORD wbytes = 0; | |
2758 | ||
2759 | data.wid.dwStreamId = BACKUP_LINK; | |
2760 | data.wid.dwStreamAttributes = 0; | |
ed3751c8 | 2761 | data.wid.Size.LowPart = wlen * sizeof (WCHAR); |
76b3903d GV |
2762 | data.wid.Size.HighPart = 0; |
2763 | data.wid.dwStreamNameSize = 0; | |
2764 | ||
2765 | if (BackupWrite (fileh, (LPBYTE)&data, | |
2766 | offsetof (WIN32_STREAM_ID, cStreamName) | |
2767 | + data.wid.Size.LowPart, | |
2768 | &wbytes, FALSE, FALSE, &context) | |
2769 | && BackupWrite (fileh, NULL, 0, &wbytes, TRUE, FALSE, &context)) | |
2770 | { | |
2771 | /* succeeded */ | |
2772 | result = 0; | |
2773 | } | |
2774 | else | |
2775 | { | |
2776 | /* Should try mapping GetLastError to errno; for now just | |
2777 | indicate a general error (eg. links not supported). */ | |
2778 | errno = EINVAL; // perhaps EMLINK? | |
2779 | } | |
2780 | } | |
2781 | ||
2782 | CloseHandle (fileh); | |
2783 | } | |
2784 | else | |
2785 | errno = ENOENT; | |
2786 | ||
2787 | return result; | |
480b0c5b GV |
2788 | } |
2789 | ||
2790 | int | |
2791 | sys_mkdir (const char * path) | |
2792 | { | |
fbd6baed | 2793 | return _mkdir (map_w32_filename (path, NULL)); |
480b0c5b GV |
2794 | } |
2795 | ||
9d1778b1 RS |
2796 | /* Because of long name mapping issues, we need to implement this |
2797 | ourselves. Also, MSVC's _mktemp returns NULL when it can't generate | |
2798 | a unique name, instead of setting the input template to an empty | |
2799 | string. | |
2800 | ||
2801 | Standard algorithm seems to be use pid or tid with a letter on the | |
2802 | front (in place of the 6 X's) and cycle through the letters to find a | |
2803 | unique name. We extend that to allow any reasonable character as the | |
2804 | first of the 6 X's. */ | |
480b0c5b GV |
2805 | char * |
2806 | sys_mktemp (char * template) | |
2807 | { | |
9d1778b1 RS |
2808 | char * p; |
2809 | int i; | |
2810 | unsigned uid = GetCurrentThreadId (); | |
2811 | static char first_char[] = "abcdefghijklmnopqrstuvwyz0123456789!%-_@#"; | |
2812 | ||
2813 | if (template == NULL) | |
2814 | return NULL; | |
2815 | p = template + strlen (template); | |
2816 | i = 5; | |
2817 | /* replace up to the last 5 X's with uid in decimal */ | |
2818 | while (--p >= template && p[0] == 'X' && --i >= 0) | |
2819 | { | |
2820 | p[0] = '0' + uid % 10; | |
2821 | uid /= 10; | |
2822 | } | |
2823 | ||
2824 | if (i < 0 && p[0] == 'X') | |
2825 | { | |
2826 | i = 0; | |
2827 | do | |
2828 | { | |
2829 | int save_errno = errno; | |
2830 | p[0] = first_char[i]; | |
2831 | if (sys_access (template, 0) < 0) | |
2832 | { | |
2833 | errno = save_errno; | |
2834 | return template; | |
2835 | } | |
2836 | } | |
2837 | while (++i < sizeof (first_char)); | |
2838 | } | |
2839 | ||
2840 | /* Template is badly formed or else we can't generate a unique name, | |
2841 | so return empty string */ | |
2842 | template[0] = 0; | |
2843 | return template; | |
480b0c5b GV |
2844 | } |
2845 | ||
2846 | int | |
2847 | sys_open (const char * path, int oflag, int mode) | |
2848 | { | |
302f0b29 GM |
2849 | const char* mpath = map_w32_filename (path, NULL); |
2850 | /* Try to open file without _O_CREAT, to be able to write to hidden | |
2851 | and system files. Force all file handles to be | |
2852 | non-inheritable. */ | |
2853 | int res = _open (mpath, (oflag & ~_O_CREAT) | _O_NOINHERIT, mode); | |
2854 | if (res >= 0) | |
2855 | return res; | |
2856 | return _open (mpath, oflag | _O_NOINHERIT, mode); | |
480b0c5b GV |
2857 | } |
2858 | ||
2859 | int | |
2860 | sys_rename (const char * oldname, const char * newname) | |
2861 | { | |
cfb5e855 | 2862 | BOOL result; |
b3308d2e | 2863 | char temp[MAX_PATH]; |
480b0c5b | 2864 | |
e9e23e23 | 2865 | /* MoveFile on Windows 95 doesn't correctly change the short file name |
5162ffce MB |
2866 | alias in a number of circumstances (it is not easy to predict when |
2867 | just by looking at oldname and newname, unfortunately). In these | |
2868 | cases, renaming through a temporary name avoids the problem. | |
2869 | ||
e9e23e23 | 2870 | A second problem on Windows 95 is that renaming through a temp name when |
5162ffce MB |
2871 | newname is uppercase fails (the final long name ends up in |
2872 | lowercase, although the short alias might be uppercase) UNLESS the | |
2873 | long temp name is not 8.3. | |
2874 | ||
e9e23e23 | 2875 | So, on Windows 95 we always rename through a temp name, and we make sure |
5162ffce | 2876 | the temp name has a long extension to ensure correct renaming. */ |
480b0c5b | 2877 | |
fbd6baed | 2878 | strcpy (temp, map_w32_filename (oldname, NULL)); |
480b0c5b | 2879 | |
76b3903d | 2880 | if (os_subtype == OS_WIN95) |
480b0c5b | 2881 | { |
b3308d2e | 2882 | char * o; |
480b0c5b | 2883 | char * p; |
b3308d2e KH |
2884 | int i = 0; |
2885 | ||
2886 | oldname = map_w32_filename (oldname, NULL); | |
2887 | if (o = strrchr (oldname, '\\')) | |
2888 | o++; | |
2889 | else | |
2890 | o = (char *) oldname; | |
480b0c5b | 2891 | |
480b0c5b GV |
2892 | if (p = strrchr (temp, '\\')) |
2893 | p++; | |
2894 | else | |
2895 | p = temp; | |
b3308d2e KH |
2896 | |
2897 | do | |
2898 | { | |
2899 | /* Force temp name to require a manufactured 8.3 alias - this | |
2900 | seems to make the second rename work properly. */ | |
f313ee82 | 2901 | sprintf (p, "_.%s.%u", o, i); |
b3308d2e | 2902 | i++; |
58f0cb7e | 2903 | result = rename (oldname, temp); |
b3308d2e KH |
2904 | } |
2905 | /* This loop must surely terminate! */ | |
cfb5e855 | 2906 | while (result < 0 && errno == EEXIST); |
58f0cb7e | 2907 | if (result < 0) |
480b0c5b GV |
2908 | return -1; |
2909 | } | |
2910 | ||
fffa137c | 2911 | /* Emulate Unix behavior - newname is deleted if it already exists |
5162ffce | 2912 | (at least if it is a file; don't do this for directories). |
76b3903d | 2913 | |
b3308d2e KH |
2914 | Since we mustn't do this if we are just changing the case of the |
2915 | file name (we would end up deleting the file we are trying to | |
2916 | rename!), we let rename detect if the destination file already | |
2917 | exists - that way we avoid the possible pitfalls of trying to | |
2918 | determine ourselves whether two names really refer to the same | |
2919 | file, which is not always possible in the general case. (Consider | |
2920 | all the permutations of shared or subst'd drives, etc.) */ | |
2921 | ||
2922 | newname = map_w32_filename (newname, NULL); | |
eb9ea53f | 2923 | result = rename (temp, newname); |
b3308d2e KH |
2924 | |
2925 | if (result < 0 | |
cfb5e855 | 2926 | && errno == EEXIST |
b3308d2e KH |
2927 | && _chmod (newname, 0666) == 0 |
2928 | && _unlink (newname) == 0) | |
2929 | result = rename (temp, newname); | |
480b0c5b | 2930 | |
eb9ea53f | 2931 | return result; |
480b0c5b GV |
2932 | } |
2933 | ||
2934 | int | |
2935 | sys_rmdir (const char * path) | |
2936 | { | |
fbd6baed | 2937 | return _rmdir (map_w32_filename (path, NULL)); |
480b0c5b GV |
2938 | } |
2939 | ||
2940 | int | |
2941 | sys_unlink (const char * path) | |
2942 | { | |
16bb7578 GV |
2943 | path = map_w32_filename (path, NULL); |
2944 | ||
2945 | /* On Unix, unlink works without write permission. */ | |
2946 | _chmod (path, 0666); | |
2947 | return _unlink (path); | |
480b0c5b GV |
2948 | } |
2949 | ||
2950 | static FILETIME utc_base_ft; | |
5da9424d | 2951 | static ULONGLONG utc_base; /* In 100ns units */ |
480b0c5b GV |
2952 | static int init = 0; |
2953 | ||
5da9424d JB |
2954 | #define FILETIME_TO_U64(result, ft) \ |
2955 | do { \ | |
2956 | ULARGE_INTEGER uiTemp; \ | |
2957 | uiTemp.LowPart = (ft).dwLowDateTime; \ | |
2958 | uiTemp.HighPart = (ft).dwHighDateTime; \ | |
2959 | result = uiTemp.QuadPart; \ | |
2960 | } while (0) | |
2961 | ||
2962 | static void | |
b56ceb92 | 2963 | initialize_utc_base (void) |
7c80d5ec | 2964 | { |
5da9424d JB |
2965 | /* Determine the delta between 1-Jan-1601 and 1-Jan-1970. */ |
2966 | SYSTEMTIME st; | |
2967 | ||
2968 | st.wYear = 1970; | |
2969 | st.wMonth = 1; | |
2970 | st.wDay = 1; | |
2971 | st.wHour = 0; | |
2972 | st.wMinute = 0; | |
2973 | st.wSecond = 0; | |
2974 | st.wMilliseconds = 0; | |
2975 | ||
2976 | SystemTimeToFileTime (&st, &utc_base_ft); | |
2977 | FILETIME_TO_U64 (utc_base, utc_base_ft); | |
7c80d5ec EZ |
2978 | } |
2979 | ||
480b0c5b GV |
2980 | static time_t |
2981 | convert_time (FILETIME ft) | |
2982 | { | |
5da9424d | 2983 | ULONGLONG tmp; |
480b0c5b GV |
2984 | |
2985 | if (!init) | |
2986 | { | |
9d4f32e8 | 2987 | initialize_utc_base (); |
480b0c5b GV |
2988 | init = 1; |
2989 | } | |
2990 | ||
2991 | if (CompareFileTime (&ft, &utc_base_ft) < 0) | |
2992 | return 0; | |
2993 | ||
5da9424d JB |
2994 | FILETIME_TO_U64 (tmp, ft); |
2995 | return (time_t) ((tmp - utc_base) / 10000000L); | |
480b0c5b GV |
2996 | } |
2997 | ||
bedf4aab | 2998 | static void |
480b0c5b GV |
2999 | convert_from_time_t (time_t time, FILETIME * pft) |
3000 | { | |
5da9424d | 3001 | ULARGE_INTEGER tmp; |
480b0c5b GV |
3002 | |
3003 | if (!init) | |
3004 | { | |
5da9424d | 3005 | initialize_utc_base (); |
480b0c5b GV |
3006 | init = 1; |
3007 | } | |
3008 | ||
3009 | /* time in 100ns units since 1-Jan-1601 */ | |
5da9424d JB |
3010 | tmp.QuadPart = (ULONGLONG) time * 10000000L + utc_base; |
3011 | pft->dwHighDateTime = tmp.HighPart; | |
3012 | pft->dwLowDateTime = tmp.LowPart; | |
480b0c5b | 3013 | } |
480b0c5b | 3014 | |
76b3903d GV |
3015 | #if 0 |
3016 | /* No reason to keep this; faking inode values either by hashing or even | |
3017 | using the file index from GetInformationByHandle, is not perfect and | |
3018 | so by default Emacs doesn't use the inode values on Windows. | |
3019 | Instead, we now determine file-truename correctly (except for | |
3020 | possible drive aliasing etc). */ | |
3021 | ||
3022 | /* Modified version of "PJW" algorithm (see the "Dragon" compiler book). */ | |
480b0c5b | 3023 | static unsigned |
76b3903d | 3024 | hashval (const unsigned char * str) |
480b0c5b GV |
3025 | { |
3026 | unsigned h = 0; | |
480b0c5b GV |
3027 | while (*str) |
3028 | { | |
3029 | h = (h << 4) + *str++; | |
76b3903d | 3030 | h ^= (h >> 28); |
480b0c5b GV |
3031 | } |
3032 | return h; | |
3033 | } | |
3034 | ||
3035 | /* Return the hash value of the canonical pathname, excluding the | |
3036 | drive/UNC header, to get a hopefully unique inode number. */ | |
76b3903d | 3037 | static DWORD |
480b0c5b GV |
3038 | generate_inode_val (const char * name) |
3039 | { | |
3040 | char fullname[ MAX_PATH ]; | |
3041 | char * p; | |
3042 | unsigned hash; | |
3043 | ||
76b3903d GV |
3044 | /* Get the truly canonical filename, if it exists. (Note: this |
3045 | doesn't resolve aliasing due to subst commands, or recognise hard | |
3046 | links. */ | |
3047 | if (!w32_get_long_filename ((char *)name, fullname, MAX_PATH)) | |
3048 | abort (); | |
3049 | ||
3050 | parse_root (fullname, &p); | |
fbd6baed | 3051 | /* Normal W32 filesystems are still case insensitive. */ |
480b0c5b | 3052 | _strlwr (p); |
76b3903d | 3053 | return hashval (p); |
480b0c5b GV |
3054 | } |
3055 | ||
76b3903d GV |
3056 | #endif |
3057 | ||
8aaaec6b EZ |
3058 | static PSECURITY_DESCRIPTOR |
3059 | get_file_security_desc (const char *fname) | |
3060 | { | |
3061 | PSECURITY_DESCRIPTOR psd = NULL; | |
3062 | DWORD sd_len, err; | |
3063 | SECURITY_INFORMATION si = OWNER_SECURITY_INFORMATION | |
3064 | | GROUP_SECURITY_INFORMATION /* | DACL_SECURITY_INFORMATION */ ; | |
3065 | ||
3066 | if (!get_file_security (fname, si, psd, 0, &sd_len)) | |
3067 | { | |
3068 | err = GetLastError (); | |
3069 | if (err != ERROR_INSUFFICIENT_BUFFER) | |
3070 | return NULL; | |
3071 | } | |
3072 | ||
3073 | psd = xmalloc (sd_len); | |
3074 | if (!get_file_security (fname, si, psd, sd_len, &sd_len)) | |
3075 | { | |
3076 | xfree (psd); | |
3077 | return NULL; | |
3078 | } | |
3079 | ||
3080 | return psd; | |
3081 | } | |
3082 | ||
3083 | static DWORD | |
3084 | get_rid (PSID sid) | |
3085 | { | |
3086 | unsigned n_subauthorities; | |
3087 | ||
3088 | /* Use the last sub-authority value of the RID, the relative | |
3089 | portion of the SID, as user/group ID. */ | |
3090 | n_subauthorities = *get_sid_sub_authority_count (sid); | |
3091 | if (n_subauthorities < 1) | |
3092 | return 0; /* the "World" RID */ | |
3093 | return *get_sid_sub_authority (sid, n_subauthorities - 1); | |
3094 | } | |
3095 | ||
f8b35b24 EZ |
3096 | /* Caching SID and account values for faster lokup. */ |
3097 | ||
3098 | #ifdef __GNUC__ | |
3099 | # define FLEXIBLE_ARRAY_MEMBER | |
3100 | #else | |
3101 | # define FLEXIBLE_ARRAY_MEMBER 1 | |
3102 | #endif | |
3103 | ||
3104 | struct w32_id { | |
22749e9a | 3105 | unsigned rid; |
f8b35b24 EZ |
3106 | struct w32_id *next; |
3107 | char name[GNLEN+1]; | |
3108 | unsigned char sid[FLEXIBLE_ARRAY_MEMBER]; | |
3109 | }; | |
3110 | ||
3111 | static struct w32_id *w32_idlist; | |
3112 | ||
3113 | static int | |
22749e9a | 3114 | w32_cached_id (PSID sid, unsigned *id, char *name) |
f8b35b24 EZ |
3115 | { |
3116 | struct w32_id *tail, *found; | |
3117 | ||
3118 | for (found = NULL, tail = w32_idlist; tail; tail = tail->next) | |
3119 | { | |
3120 | if (equal_sid ((PSID)tail->sid, sid)) | |
3121 | { | |
3122 | found = tail; | |
3123 | break; | |
3124 | } | |
3125 | } | |
3126 | if (found) | |
3127 | { | |
3128 | *id = found->rid; | |
3129 | strcpy (name, found->name); | |
3130 | return 1; | |
3131 | } | |
3132 | else | |
3133 | return 0; | |
3134 | } | |
3135 | ||
3136 | static void | |
22749e9a | 3137 | w32_add_to_cache (PSID sid, unsigned id, char *name) |
f8b35b24 EZ |
3138 | { |
3139 | DWORD sid_len; | |
3140 | struct w32_id *new_entry; | |
3141 | ||
3142 | /* We don't want to leave behind stale cache from when Emacs was | |
3143 | dumped. */ | |
3144 | if (initialized) | |
3145 | { | |
3146 | sid_len = get_length_sid (sid); | |
3147 | new_entry = xmalloc (offsetof (struct w32_id, sid) + sid_len); | |
3148 | if (new_entry) | |
3149 | { | |
3150 | new_entry->rid = id; | |
3151 | strcpy (new_entry->name, name); | |
3152 | copy_sid (sid_len, (PSID)new_entry->sid, sid); | |
3153 | new_entry->next = w32_idlist; | |
3154 | w32_idlist = new_entry; | |
3155 | } | |
3156 | } | |
3157 | } | |
3158 | ||
8aaaec6b EZ |
3159 | #define UID 1 |
3160 | #define GID 2 | |
3161 | ||
3162 | static int | |
3163 | get_name_and_id (PSECURITY_DESCRIPTOR psd, const char *fname, | |
22749e9a | 3164 | unsigned *id, char *nm, int what) |
8aaaec6b EZ |
3165 | { |
3166 | PSID sid = NULL; | |
3167 | char machine[MAX_COMPUTERNAME_LENGTH+1]; | |
3168 | BOOL dflt; | |
3169 | SID_NAME_USE ignore; | |
3170 | char name[UNLEN+1]; | |
3171 | DWORD name_len = sizeof (name); | |
3172 | char domain[1024]; | |
ed3751c8 | 3173 | DWORD domain_len = sizeof (domain); |
8aaaec6b EZ |
3174 | char *mp = NULL; |
3175 | int use_dflt = 0; | |
3176 | int result; | |
3177 | ||
3178 | if (what == UID) | |
3179 | result = get_security_descriptor_owner (psd, &sid, &dflt); | |
3180 | else if (what == GID) | |
3181 | result = get_security_descriptor_group (psd, &sid, &dflt); | |
3182 | else | |
3183 | result = 0; | |
3184 | ||
3185 | if (!result || !is_valid_sid (sid)) | |
3186 | use_dflt = 1; | |
f8b35b24 | 3187 | else if (!w32_cached_id (sid, id, nm)) |
8aaaec6b EZ |
3188 | { |
3189 | /* If FNAME is a UNC, we need to lookup account on the | |
3190 | specified machine. */ | |
3191 | if (IS_DIRECTORY_SEP (fname[0]) && IS_DIRECTORY_SEP (fname[1]) | |
3192 | && fname[2] != '\0') | |
3193 | { | |
3194 | const char *s; | |
3195 | char *p; | |
3196 | ||
3197 | for (s = fname + 2, p = machine; | |
3198 | *s && !IS_DIRECTORY_SEP (*s); s++, p++) | |
3199 | *p = *s; | |
3200 | *p = '\0'; | |
3201 | mp = machine; | |
3202 | } | |
3203 | ||
3204 | if (!lookup_account_sid (mp, sid, name, &name_len, | |
3205 | domain, &domain_len, &ignore) | |
3206 | || name_len > UNLEN+1) | |
3207 | use_dflt = 1; | |
3208 | else | |
3209 | { | |
3210 | *id = get_rid (sid); | |
3211 | strcpy (nm, name); | |
f8b35b24 | 3212 | w32_add_to_cache (sid, *id, name); |
8aaaec6b EZ |
3213 | } |
3214 | } | |
3215 | return use_dflt; | |
3216 | } | |
3217 | ||
3218 | static void | |
bedf4aab JB |
3219 | get_file_owner_and_group (PSECURITY_DESCRIPTOR psd, |
3220 | const char *fname, | |
3221 | struct stat *st) | |
8aaaec6b EZ |
3222 | { |
3223 | int dflt_usr = 0, dflt_grp = 0; | |
3224 | ||
3225 | if (!psd) | |
3226 | { | |
3227 | dflt_usr = 1; | |
3228 | dflt_grp = 1; | |
3229 | } | |
3230 | else | |
3231 | { | |
3232 | if (get_name_and_id (psd, fname, &st->st_uid, st->st_uname, UID)) | |
3233 | dflt_usr = 1; | |
3234 | if (get_name_and_id (psd, fname, &st->st_gid, st->st_gname, GID)) | |
3235 | dflt_grp = 1; | |
3236 | } | |
3237 | /* Consider files to belong to current user/group, if we cannot get | |
3238 | more accurate information. */ | |
3239 | if (dflt_usr) | |
3240 | { | |
3241 | st->st_uid = dflt_passwd.pw_uid; | |
3242 | strcpy (st->st_uname, dflt_passwd.pw_name); | |
3243 | } | |
3244 | if (dflt_grp) | |
3245 | { | |
3246 | st->st_gid = dflt_passwd.pw_gid; | |
3247 | strcpy (st->st_gname, dflt_group.gr_name); | |
3248 | } | |
3249 | } | |
3250 | ||
be4c6380 EZ |
3251 | /* Return non-zero if NAME is a potentially slow filesystem. */ |
3252 | int | |
3253 | is_slow_fs (const char *name) | |
3254 | { | |
3255 | char drive_root[4]; | |
3256 | UINT devtype; | |
3257 | ||
3258 | if (IS_DIRECTORY_SEP (name[0]) && IS_DIRECTORY_SEP (name[1])) | |
3259 | devtype = DRIVE_REMOTE; /* assume UNC name is remote */ | |
3260 | else if (!(strlen (name) >= 2 && IS_DEVICE_SEP (name[1]))) | |
3261 | devtype = GetDriveType (NULL); /* use root of current drive */ | |
3262 | else | |
3263 | { | |
3264 | /* GetDriveType needs the root directory of the drive. */ | |
3265 | strncpy (drive_root, name, 2); | |
3266 | drive_root[2] = '\\'; | |
3267 | drive_root[3] = '\0'; | |
3268 | devtype = GetDriveType (drive_root); | |
3269 | } | |
3270 | return !(devtype == DRIVE_FIXED || devtype == DRIVE_RAMDISK); | |
3271 | } | |
3272 | ||
480b0c5b GV |
3273 | /* MSVC stat function can't cope with UNC names and has other bugs, so |
3274 | replace it with our own. This also allows us to calculate consistent | |
3275 | inode values without hacks in the main Emacs code. */ | |
3276 | int | |
3277 | stat (const char * path, struct stat * buf) | |
3278 | { | |
eb9ea53f | 3279 | char *name, *r; |
480b0c5b GV |
3280 | WIN32_FIND_DATA wfd; |
3281 | HANDLE fh; | |
e3b88685 | 3282 | unsigned __int64 fake_inode; |
480b0c5b GV |
3283 | int permission; |
3284 | int len; | |
3285 | int rootdir = FALSE; | |
8aaaec6b | 3286 | PSECURITY_DESCRIPTOR psd = NULL; |
480b0c5b GV |
3287 | |
3288 | if (path == NULL || buf == NULL) | |
3289 | { | |
3290 | errno = EFAULT; | |
3291 | return -1; | |
3292 | } | |
3293 | ||
fbd6baed | 3294 | name = (char *) map_w32_filename (path, &path); |
22189f79 EZ |
3295 | /* Must be valid filename, no wild cards or other invalid |
3296 | characters. We use _mbspbrk to support multibyte strings that | |
3297 | might look to strpbrk as if they included literal *, ?, and other | |
3298 | characters mentioned below that are disallowed by Windows | |
3299 | filesystems. */ | |
3300 | if (_mbspbrk (name, "*?|<>\"")) | |
480b0c5b GV |
3301 | { |
3302 | errno = ENOENT; | |
3303 | return -1; | |
3304 | } | |
3305 | ||
eb9ea53f GV |
3306 | /* If name is "c:/.." or "/.." then stat "c:/" or "/". */ |
3307 | r = IS_DEVICE_SEP (name[1]) ? &name[2] : name; | |
3308 | if (IS_DIRECTORY_SEP (r[0]) && r[1] == '.' && r[2] == '.' && r[3] == '\0') | |
3309 | { | |
3310 | r[1] = r[2] = '\0'; | |
3311 | } | |
3312 | ||
480b0c5b GV |
3313 | /* Remove trailing directory separator, unless name is the root |
3314 | directory of a drive or UNC volume in which case ensure there | |
3315 | is a trailing separator. */ | |
3316 | len = strlen (name); | |
3317 | rootdir = (path >= name + len - 1 | |
3318 | && (IS_DIRECTORY_SEP (*path) || *path == 0)); | |
3319 | name = strcpy (alloca (len + 2), name); | |
3320 | ||
9d3355d1 GV |
3321 | if (is_unc_volume (name)) |
3322 | { | |
3323 | DWORD attrs = unc_volume_file_attributes (name); | |
3324 | ||
3325 | if (attrs == -1) | |
3326 | return -1; | |
3327 | ||
3328 | memset (&wfd, 0, sizeof (wfd)); | |
3329 | wfd.dwFileAttributes = attrs; | |
3330 | wfd.ftCreationTime = utc_base_ft; | |
3331 | wfd.ftLastAccessTime = utc_base_ft; | |
3332 | wfd.ftLastWriteTime = utc_base_ft; | |
3333 | strcpy (wfd.cFileName, name); | |
3334 | } | |
3335 | else if (rootdir) | |
480b0c5b GV |
3336 | { |
3337 | if (!IS_DIRECTORY_SEP (name[len-1])) | |
3338 | strcat (name, "\\"); | |
3339 | if (GetDriveType (name) < 2) | |
3340 | { | |
3341 | errno = ENOENT; | |
3342 | return -1; | |
3343 | } | |
3344 | memset (&wfd, 0, sizeof (wfd)); | |
3345 | wfd.dwFileAttributes = FILE_ATTRIBUTE_DIRECTORY; | |
3346 | wfd.ftCreationTime = utc_base_ft; | |
3347 | wfd.ftLastAccessTime = utc_base_ft; | |
3348 | wfd.ftLastWriteTime = utc_base_ft; | |
3349 | strcpy (wfd.cFileName, name); | |
3350 | } | |
3351 | else | |
3352 | { | |
3353 | if (IS_DIRECTORY_SEP (name[len-1])) | |
3354 | name[len - 1] = 0; | |
76b3903d GV |
3355 | |
3356 | /* (This is hacky, but helps when doing file completions on | |
3357 | network drives.) Optimize by using information available from | |
3358 | active readdir if possible. */ | |
b19cc00c GV |
3359 | len = strlen (dir_pathname); |
3360 | if (IS_DIRECTORY_SEP (dir_pathname[len-1])) | |
3361 | len--; | |
76b3903d | 3362 | if (dir_find_handle != INVALID_HANDLE_VALUE |
b19cc00c | 3363 | && strnicmp (name, dir_pathname, len) == 0 |
76b3903d | 3364 | && IS_DIRECTORY_SEP (name[len]) |
05131107 | 3365 | && xstrcasecmp (name + len + 1, dir_static.d_name) == 0) |
480b0c5b | 3366 | { |
76b3903d GV |
3367 | /* This was the last entry returned by readdir. */ |
3368 | wfd = dir_find_data; | |
3369 | } | |
3370 | else | |
3371 | { | |
513feaa5 | 3372 | logon_network_drive (name); |
302d7d54 | 3373 | |
76b3903d GV |
3374 | fh = FindFirstFile (name, &wfd); |
3375 | if (fh == INVALID_HANDLE_VALUE) | |
3376 | { | |
3377 | errno = ENOENT; | |
3378 | return -1; | |
3379 | } | |
3380 | FindClose (fh); | |
480b0c5b | 3381 | } |
480b0c5b GV |
3382 | } |
3383 | ||
8aaaec6b | 3384 | if (!(NILP (Vw32_get_true_file_attributes) |
19ced600 | 3385 | || (EQ (Vw32_get_true_file_attributes, Qlocal) && is_slow_fs (name))) |
93e0f0da JR |
3386 | /* No access rights required to get info. */ |
3387 | && (fh = CreateFile (name, 0, 0, NULL, OPEN_EXISTING, | |
3388 | FILE_FLAG_BACKUP_SEMANTICS, NULL)) | |
3389 | != INVALID_HANDLE_VALUE) | |
480b0c5b | 3390 | { |
480b0c5b | 3391 | /* This is more accurate in terms of gettting the correct number |
aa5ee2a3 | 3392 | of links, but is quite slow (it is noticeable when Emacs is |
480b0c5b GV |
3393 | making a list of file name completions). */ |
3394 | BY_HANDLE_FILE_INFORMATION info; | |
3395 | ||
480b0c5b GV |
3396 | if (GetFileInformationByHandle (fh, &info)) |
3397 | { | |
480b0c5b | 3398 | buf->st_nlink = info.nNumberOfLinks; |
76b3903d GV |
3399 | /* Might as well use file index to fake inode values, but this |
3400 | is not guaranteed to be unique unless we keep a handle open | |
3401 | all the time (even then there are situations where it is | |
3402 | not unique). Reputedly, there are at most 48 bits of info | |
3403 | (on NTFS, presumably less on FAT). */ | |
e3b88685 EZ |
3404 | fake_inode = info.nFileIndexHigh; |
3405 | fake_inode <<= 32; | |
3406 | fake_inode += info.nFileIndexLow; | |
480b0c5b GV |
3407 | } |
3408 | else | |
3409 | { | |
01f31dfb AI |
3410 | buf->st_nlink = 1; |
3411 | fake_inode = 0; | |
3412 | } | |
3413 | ||
93e0f0da | 3414 | if (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) |
01f31dfb | 3415 | { |
e3b88685 | 3416 | buf->st_mode = S_IFDIR; |
93e0f0da JR |
3417 | } |
3418 | else | |
3419 | { | |
3420 | switch (GetFileType (fh)) | |
3421 | { | |
3422 | case FILE_TYPE_DISK: | |
e3b88685 | 3423 | buf->st_mode = S_IFREG; |
93e0f0da JR |
3424 | break; |
3425 | case FILE_TYPE_PIPE: | |
e3b88685 | 3426 | buf->st_mode = S_IFIFO; |
93e0f0da JR |
3427 | break; |
3428 | case FILE_TYPE_CHAR: | |
3429 | case FILE_TYPE_UNKNOWN: | |
3430 | default: | |
e3b88685 | 3431 | buf->st_mode = S_IFCHR; |
93e0f0da | 3432 | } |
480b0c5b | 3433 | } |
01f31dfb | 3434 | CloseHandle (fh); |
8aaaec6b EZ |
3435 | psd = get_file_security_desc (name); |
3436 | get_file_owner_and_group (psd, name, buf); | |
76b3903d GV |
3437 | } |
3438 | else | |
3439 | { | |
3440 | /* Don't bother to make this information more accurate. */ | |
93e0f0da | 3441 | buf->st_mode = (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) ? |
e3b88685 | 3442 | S_IFDIR : S_IFREG; |
480b0c5b | 3443 | buf->st_nlink = 1; |
76b3903d | 3444 | fake_inode = 0; |
8aaaec6b EZ |
3445 | |
3446 | get_file_owner_and_group (NULL, name, buf); | |
76b3903d | 3447 | } |
70fdbb46 | 3448 | xfree (psd); |
76b3903d GV |
3449 | |
3450 | #if 0 | |
3451 | /* Not sure if there is any point in this. */ | |
3452 | if (!NILP (Vw32_generate_fake_inodes)) | |
3453 | fake_inode = generate_inode_val (name); | |
3454 | else if (fake_inode == 0) | |
3455 | { | |
3456 | /* For want of something better, try to make everything unique. */ | |
3457 | static DWORD gen_num = 0; | |
3458 | fake_inode = ++gen_num; | |
480b0c5b | 3459 | } |
76b3903d GV |
3460 | #endif |
3461 | ||
3462 | /* MSVC defines _ino_t to be short; other libc's might not. */ | |
3463 | if (sizeof (buf->st_ino) == 2) | |
3464 | buf->st_ino = fake_inode ^ (fake_inode >> 16); | |
3465 | else | |
3466 | buf->st_ino = fake_inode; | |
480b0c5b | 3467 | |
fbd6baed | 3468 | /* volume_info is set indirectly by map_w32_filename */ |
480b0c5b GV |
3469 | buf->st_dev = volume_info.serialnum; |
3470 | buf->st_rdev = volume_info.serialnum; | |
3471 | ||
8aaaec6b EZ |
3472 | buf->st_size = wfd.nFileSizeHigh; |
3473 | buf->st_size <<= 32; | |
3474 | buf->st_size += wfd.nFileSizeLow; | |
480b0c5b GV |
3475 | |
3476 | /* Convert timestamps to Unix format. */ | |
3477 | buf->st_mtime = convert_time (wfd.ftLastWriteTime); | |
3478 | buf->st_atime = convert_time (wfd.ftLastAccessTime); | |
3479 | if (buf->st_atime == 0) buf->st_atime = buf->st_mtime; | |
3480 | buf->st_ctime = convert_time (wfd.ftCreationTime); | |
3481 | if (buf->st_ctime == 0) buf->st_ctime = buf->st_mtime; | |
3482 | ||
3483 | /* determine rwx permissions */ | |
3484 | if (wfd.dwFileAttributes & FILE_ATTRIBUTE_READONLY) | |
e3b88685 | 3485 | permission = S_IREAD; |
480b0c5b | 3486 | else |
e3b88685 | 3487 | permission = S_IREAD | S_IWRITE; |
177c0ea7 | 3488 | |
480b0c5b | 3489 | if (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) |
e3b88685 | 3490 | permission |= S_IEXEC; |
b3308d2e | 3491 | else if (is_exec (name)) |
e3b88685 | 3492 | permission |= S_IEXEC; |
480b0c5b GV |
3493 | |
3494 | buf->st_mode |= permission | (permission >> 3) | (permission >> 6); | |
3495 | ||
3496 | return 0; | |
3497 | } | |
3498 | ||
16bb7578 GV |
3499 | /* Provide fstat and utime as well as stat for consistent handling of |
3500 | file timestamps. */ | |
3501 | int | |
3502 | fstat (int desc, struct stat * buf) | |
3503 | { | |
3504 | HANDLE fh = (HANDLE) _get_osfhandle (desc); | |
3505 | BY_HANDLE_FILE_INFORMATION info; | |
e3b88685 | 3506 | unsigned __int64 fake_inode; |
16bb7578 GV |
3507 | int permission; |
3508 | ||
3509 | switch (GetFileType (fh) & ~FILE_TYPE_REMOTE) | |
3510 | { | |
3511 | case FILE_TYPE_DISK: | |
e3b88685 | 3512 | buf->st_mode = S_IFREG; |
16bb7578 GV |
3513 | if (!GetFileInformationByHandle (fh, &info)) |
3514 | { | |
3515 | errno = EACCES; | |
3516 | return -1; | |
3517 | } | |
3518 | break; | |
3519 | case FILE_TYPE_PIPE: | |
e3b88685 | 3520 | buf->st_mode = S_IFIFO; |
16bb7578 GV |
3521 | goto non_disk; |
3522 | case FILE_TYPE_CHAR: | |
3523 | case FILE_TYPE_UNKNOWN: | |
3524 | default: | |
e3b88685 | 3525 | buf->st_mode = S_IFCHR; |
16bb7578 GV |
3526 | non_disk: |
3527 | memset (&info, 0, sizeof (info)); | |
3528 | info.dwFileAttributes = 0; | |
3529 | info.ftCreationTime = utc_base_ft; | |
3530 | info.ftLastAccessTime = utc_base_ft; | |
3531 | info.ftLastWriteTime = utc_base_ft; | |
3532 | } | |
3533 | ||
3534 | if (info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) | |
e3b88685 | 3535 | buf->st_mode = S_IFDIR; |
93e0f0da JR |
3536 | |
3537 | buf->st_nlink = info.nNumberOfLinks; | |
3538 | /* Might as well use file index to fake inode values, but this | |
3539 | is not guaranteed to be unique unless we keep a handle open | |
3540 | all the time (even then there are situations where it is | |
3541 | not unique). Reputedly, there are at most 48 bits of info | |
3542 | (on NTFS, presumably less on FAT). */ | |
e3b88685 EZ |
3543 | fake_inode = info.nFileIndexHigh; |
3544 | fake_inode <<= 32; | |
3545 | fake_inode += info.nFileIndexLow; | |
16bb7578 GV |
3546 | |
3547 | /* MSVC defines _ino_t to be short; other libc's might not. */ | |
3548 | if (sizeof (buf->st_ino) == 2) | |
3549 | buf->st_ino = fake_inode ^ (fake_inode >> 16); | |
3550 | else | |
3551 | buf->st_ino = fake_inode; | |
3552 | ||
8aaaec6b EZ |
3553 | /* Consider files to belong to current user. |
3554 | FIXME: this should use GetSecurityInfo API, but it is only | |
3555 | available for _WIN32_WINNT >= 0x501. */ | |
07f7980a EZ |
3556 | buf->st_uid = dflt_passwd.pw_uid; |
3557 | buf->st_gid = dflt_passwd.pw_gid; | |
8aaaec6b EZ |
3558 | strcpy (buf->st_uname, dflt_passwd.pw_name); |
3559 | strcpy (buf->st_gname, dflt_group.gr_name); | |
16bb7578 GV |
3560 | |
3561 | buf->st_dev = info.dwVolumeSerialNumber; | |
3562 | buf->st_rdev = info.dwVolumeSerialNumber; | |
3563 | ||
8aaaec6b EZ |
3564 | buf->st_size = info.nFileSizeHigh; |
3565 | buf->st_size <<= 32; | |
3566 | buf->st_size += info.nFileSizeLow; | |
16bb7578 GV |
3567 | |
3568 | /* Convert timestamps to Unix format. */ | |
3569 | buf->st_mtime = convert_time (info.ftLastWriteTime); | |
3570 | buf->st_atime = convert_time (info.ftLastAccessTime); | |
3571 | if (buf->st_atime == 0) buf->st_atime = buf->st_mtime; | |
3572 | buf->st_ctime = convert_time (info.ftCreationTime); | |
3573 | if (buf->st_ctime == 0) buf->st_ctime = buf->st_mtime; | |
3574 | ||
3575 | /* determine rwx permissions */ | |
3576 | if (info.dwFileAttributes & FILE_ATTRIBUTE_READONLY) | |
e3b88685 | 3577 | permission = S_IREAD; |
16bb7578 | 3578 | else |
e3b88685 | 3579 | permission = S_IREAD | S_IWRITE; |
177c0ea7 | 3580 | |
16bb7578 | 3581 | if (info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) |
e3b88685 | 3582 | permission |= S_IEXEC; |
16bb7578 GV |
3583 | else |
3584 | { | |
3585 | #if 0 /* no way of knowing the filename */ | |
3586 | char * p = strrchr (name, '.'); | |
3587 | if (p != NULL && | |
05131107 JR |
3588 | (xstrcasecmp (p, ".exe") == 0 || |
3589 | xstrcasecmp (p, ".com") == 0 || | |
3590 | xstrcasecmp (p, ".bat") == 0 || | |
3591 | xstrcasecmp (p, ".cmd") == 0)) | |
e3b88685 | 3592 | permission |= S_IEXEC; |
16bb7578 GV |
3593 | #endif |
3594 | } | |
3595 | ||
3596 | buf->st_mode |= permission | (permission >> 3) | (permission >> 6); | |
3597 | ||
3598 | return 0; | |
3599 | } | |
3600 | ||
3601 | int | |
3602 | utime (const char *name, struct utimbuf *times) | |
3603 | { | |
3604 | struct utimbuf deftime; | |
3605 | HANDLE fh; | |
3606 | FILETIME mtime; | |
3607 | FILETIME atime; | |
3608 | ||
3609 | if (times == NULL) | |
3610 | { | |
3611 | deftime.modtime = deftime.actime = time (NULL); | |
3612 | times = &deftime; | |
3613 | } | |
3614 | ||
3615 | /* Need write access to set times. */ | |
3616 | fh = CreateFile (name, GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, | |
3617 | 0, OPEN_EXISTING, 0, NULL); | |
3618 | if (fh) | |
3619 | { | |
3620 | convert_from_time_t (times->actime, &atime); | |
3621 | convert_from_time_t (times->modtime, &mtime); | |
3622 | if (!SetFileTime (fh, NULL, &atime, &mtime)) | |
3623 | { | |
3624 | CloseHandle (fh); | |
3625 | errno = EACCES; | |
3626 | return -1; | |
3627 | } | |
3628 | CloseHandle (fh); | |
3629 | } | |
3630 | else | |
3631 | { | |
3632 | errno = EINVAL; | |
3633 | return -1; | |
3634 | } | |
3635 | return 0; | |
3636 | } | |
3637 | ||
7c80d5ec | 3638 | \f |
973f782d EZ |
3639 | /* Symlink-related functions that always fail. Used in fileio.c and in |
3640 | sysdep.c to avoid #ifdef's. */ | |
0f7bb05d EZ |
3641 | int |
3642 | symlink (char const *dummy1, char const *dummy2) | |
3643 | { | |
3644 | errno = ENOSYS; | |
3645 | return -1; | |
3646 | } | |
3647 | ||
3648 | ssize_t | |
3649 | readlink (const char *name, char *dummy1, size_t dummy2) | |
3650 | { | |
3651 | /* `access' is much faster than `stat' on MS-Windows. */ | |
3652 | if (sys_access (name, 0) == 0) | |
3653 | errno = EINVAL; | |
3654 | return -1; | |
3655 | } | |
3656 | ||
973f782d EZ |
3657 | char * |
3658 | careadlinkat (int fd, char const *filename, | |
3659 | char *buffer, size_t buffer_size, | |
3660 | struct allocator const *alloc, | |
3661 | ssize_t (*preadlinkat) (int, char const *, char *, size_t)) | |
3662 | { | |
3663 | errno = ENOSYS; | |
3664 | return NULL; | |
3665 | } | |
3666 | ||
3667 | ssize_t | |
3668 | careadlinkatcwd (int fd, char const *filename, char *buffer, | |
3669 | size_t buffer_size) | |
3670 | { | |
3671 | (void) fd; | |
3672 | return readlink (filename, buffer, buffer_size); | |
3673 | } | |
3674 | ||
0f7bb05d | 3675 | \f |
7c80d5ec EZ |
3676 | /* Support for browsing other processes and their attributes. See |
3677 | process.c for the Lisp bindings. */ | |
3678 | ||
3679 | /* Helper wrapper functions. */ | |
3680 | ||
bedf4aab JB |
3681 | static HANDLE WINAPI |
3682 | create_toolhelp32_snapshot (DWORD Flags, DWORD Ignored) | |
7c80d5ec EZ |
3683 | { |
3684 | static CreateToolhelp32Snapshot_Proc s_pfn_Create_Toolhelp32_Snapshot = NULL; | |
3685 | ||
3686 | if (g_b_init_create_toolhelp32_snapshot == 0) | |
3687 | { | |
3688 | g_b_init_create_toolhelp32_snapshot = 1; | |
3689 | s_pfn_Create_Toolhelp32_Snapshot = (CreateToolhelp32Snapshot_Proc) | |
3690 | GetProcAddress (GetModuleHandle ("kernel32.dll"), | |
3691 | "CreateToolhelp32Snapshot"); | |
3692 | } | |
3693 | if (s_pfn_Create_Toolhelp32_Snapshot == NULL) | |
3694 | { | |
3695 | return INVALID_HANDLE_VALUE; | |
3696 | } | |
3697 | return (s_pfn_Create_Toolhelp32_Snapshot (Flags, Ignored)); | |
3698 | } | |
3699 | ||
bedf4aab JB |
3700 | static BOOL WINAPI |
3701 | process32_first (HANDLE hSnapshot, LPPROCESSENTRY32 lppe) | |
7c80d5ec EZ |
3702 | { |
3703 | static Process32First_Proc s_pfn_Process32_First = NULL; | |
3704 | ||
3705 | if (g_b_init_process32_first == 0) | |
3706 | { | |
3707 | g_b_init_process32_first = 1; | |
3708 | s_pfn_Process32_First = (Process32First_Proc) | |
3709 | GetProcAddress (GetModuleHandle ("kernel32.dll"), | |
3710 | "Process32First"); | |
3711 | } | |
3712 | if (s_pfn_Process32_First == NULL) | |
3713 | { | |
3714 | return FALSE; | |
3715 | } | |
3716 | return (s_pfn_Process32_First (hSnapshot, lppe)); | |
3717 | } | |
3718 | ||
bedf4aab JB |
3719 | static BOOL WINAPI |
3720 | process32_next (HANDLE hSnapshot, LPPROCESSENTRY32 lppe) | |
7c80d5ec EZ |
3721 | { |
3722 | static Process32Next_Proc s_pfn_Process32_Next = NULL; | |
3723 | ||
3724 | if (g_b_init_process32_next == 0) | |
3725 | { | |
3726 | g_b_init_process32_next = 1; | |
3727 | s_pfn_Process32_Next = (Process32Next_Proc) | |
3728 | GetProcAddress (GetModuleHandle ("kernel32.dll"), | |
3729 | "Process32Next"); | |
3730 | } | |
3731 | if (s_pfn_Process32_Next == NULL) | |
3732 | { | |
3733 | return FALSE; | |
3734 | } | |
3735 | return (s_pfn_Process32_Next (hSnapshot, lppe)); | |
3736 | } | |
3737 | ||
bedf4aab JB |
3738 | static BOOL WINAPI |
3739 | open_thread_token (HANDLE ThreadHandle, | |
3740 | DWORD DesiredAccess, | |
3741 | BOOL OpenAsSelf, | |
3742 | PHANDLE TokenHandle) | |
7c80d5ec EZ |
3743 | { |
3744 | static OpenThreadToken_Proc s_pfn_Open_Thread_Token = NULL; | |
3745 | HMODULE hm_advapi32 = NULL; | |
3746 | if (is_windows_9x () == TRUE) | |
3747 | { | |
3748 | SetLastError (ERROR_NOT_SUPPORTED); | |
3749 | return FALSE; | |
3750 | } | |
3751 | if (g_b_init_open_thread_token == 0) | |
3752 | { | |
3753 | g_b_init_open_thread_token = 1; | |
3754 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
3755 | s_pfn_Open_Thread_Token = | |
3756 | (OpenThreadToken_Proc) GetProcAddress (hm_advapi32, "OpenThreadToken"); | |
3757 | } | |
3758 | if (s_pfn_Open_Thread_Token == NULL) | |
3759 | { | |
3760 | SetLastError (ERROR_NOT_SUPPORTED); | |
3761 | return FALSE; | |
3762 | } | |
3763 | return ( | |
3764 | s_pfn_Open_Thread_Token ( | |
3765 | ThreadHandle, | |
3766 | DesiredAccess, | |
3767 | OpenAsSelf, | |
3768 | TokenHandle) | |
3769 | ); | |
3770 | } | |
3771 | ||
bedf4aab JB |
3772 | static BOOL WINAPI |
3773 | impersonate_self (SECURITY_IMPERSONATION_LEVEL ImpersonationLevel) | |
7c80d5ec EZ |
3774 | { |
3775 | static ImpersonateSelf_Proc s_pfn_Impersonate_Self = NULL; | |
3776 | HMODULE hm_advapi32 = NULL; | |
3777 | if (is_windows_9x () == TRUE) | |
3778 | { | |
3779 | return FALSE; | |
3780 | } | |
3781 | if (g_b_init_impersonate_self == 0) | |
3782 | { | |
3783 | g_b_init_impersonate_self = 1; | |
3784 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
3785 | s_pfn_Impersonate_Self = | |
3786 | (ImpersonateSelf_Proc) GetProcAddress (hm_advapi32, "ImpersonateSelf"); | |
3787 | } | |
3788 | if (s_pfn_Impersonate_Self == NULL) | |
3789 | { | |
3790 | return FALSE; | |
3791 | } | |
3792 | return s_pfn_Impersonate_Self (ImpersonationLevel); | |
3793 | } | |
3794 | ||
bedf4aab JB |
3795 | static BOOL WINAPI |
3796 | revert_to_self (void) | |
7c80d5ec EZ |
3797 | { |
3798 | static RevertToSelf_Proc s_pfn_Revert_To_Self = NULL; | |
3799 | HMODULE hm_advapi32 = NULL; | |
3800 | if (is_windows_9x () == TRUE) | |
3801 | { | |
3802 | return FALSE; | |
3803 | } | |
3804 | if (g_b_init_revert_to_self == 0) | |
3805 | { | |
3806 | g_b_init_revert_to_self = 1; | |
3807 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
3808 | s_pfn_Revert_To_Self = | |
3809 | (RevertToSelf_Proc) GetProcAddress (hm_advapi32, "RevertToSelf"); | |
3810 | } | |
3811 | if (s_pfn_Revert_To_Self == NULL) | |
3812 | { | |
3813 | return FALSE; | |
3814 | } | |
3815 | return s_pfn_Revert_To_Self (); | |
3816 | } | |
3817 | ||
bedf4aab JB |
3818 | static BOOL WINAPI |
3819 | get_process_memory_info (HANDLE h_proc, | |
3820 | PPROCESS_MEMORY_COUNTERS mem_counters, | |
3821 | DWORD bufsize) | |
7c80d5ec EZ |
3822 | { |
3823 | static GetProcessMemoryInfo_Proc s_pfn_Get_Process_Memory_Info = NULL; | |
3824 | HMODULE hm_psapi = NULL; | |
3825 | if (is_windows_9x () == TRUE) | |
3826 | { | |
3827 | return FALSE; | |
3828 | } | |
3829 | if (g_b_init_get_process_memory_info == 0) | |
3830 | { | |
3831 | g_b_init_get_process_memory_info = 1; | |
3832 | hm_psapi = LoadLibrary ("Psapi.dll"); | |
3833 | if (hm_psapi) | |
3834 | s_pfn_Get_Process_Memory_Info = (GetProcessMemoryInfo_Proc) | |
3835 | GetProcAddress (hm_psapi, "GetProcessMemoryInfo"); | |
3836 | } | |
3837 | if (s_pfn_Get_Process_Memory_Info == NULL) | |
3838 | { | |
3839 | return FALSE; | |
3840 | } | |
3841 | return s_pfn_Get_Process_Memory_Info (h_proc, mem_counters, bufsize); | |
3842 | } | |
3843 | ||
bedf4aab JB |
3844 | static BOOL WINAPI |
3845 | get_process_working_set_size (HANDLE h_proc, | |
3846 | DWORD *minrss, | |
3847 | DWORD *maxrss) | |
7c80d5ec EZ |
3848 | { |
3849 | static GetProcessWorkingSetSize_Proc | |
3850 | s_pfn_Get_Process_Working_Set_Size = NULL; | |
3851 | ||
3852 | if (is_windows_9x () == TRUE) | |
3853 | { | |
3854 | return FALSE; | |
3855 | } | |
3856 | if (g_b_init_get_process_working_set_size == 0) | |
3857 | { | |
3858 | g_b_init_get_process_working_set_size = 1; | |
3859 | s_pfn_Get_Process_Working_Set_Size = (GetProcessWorkingSetSize_Proc) | |
3860 | GetProcAddress (GetModuleHandle ("kernel32.dll"), | |
3861 | "GetProcessWorkingSetSize"); | |
3862 | } | |
3863 | if (s_pfn_Get_Process_Working_Set_Size == NULL) | |
3864 | { | |
3865 | return FALSE; | |
3866 | } | |
3867 | return s_pfn_Get_Process_Working_Set_Size (h_proc, minrss, maxrss); | |
3868 | } | |
3869 | ||
bedf4aab JB |
3870 | static BOOL WINAPI |
3871 | global_memory_status (MEMORYSTATUS *buf) | |
7c80d5ec EZ |
3872 | { |
3873 | static GlobalMemoryStatus_Proc s_pfn_Global_Memory_Status = NULL; | |
3874 | ||
3875 | if (is_windows_9x () == TRUE) | |
3876 | { | |
3877 | return FALSE; | |
3878 | } | |
3879 | if (g_b_init_global_memory_status == 0) | |
3880 | { | |
3881 | g_b_init_global_memory_status = 1; | |
3882 | s_pfn_Global_Memory_Status = (GlobalMemoryStatus_Proc) | |
3883 | GetProcAddress (GetModuleHandle ("kernel32.dll"), | |
3884 | "GlobalMemoryStatus"); | |
3885 | } | |
3886 | if (s_pfn_Global_Memory_Status == NULL) | |
3887 | { | |
3888 | return FALSE; | |
3889 | } | |
3890 | return s_pfn_Global_Memory_Status (buf); | |
3891 | } | |
3892 | ||
bedf4aab JB |
3893 | static BOOL WINAPI |
3894 | global_memory_status_ex (MEMORY_STATUS_EX *buf) | |
7c80d5ec EZ |
3895 | { |
3896 | static GlobalMemoryStatusEx_Proc s_pfn_Global_Memory_Status_Ex = NULL; | |
3897 | ||
3898 | if (is_windows_9x () == TRUE) | |
3899 | { | |
3900 | return FALSE; | |
3901 | } | |
3902 | if (g_b_init_global_memory_status_ex == 0) | |
3903 | { | |
3904 | g_b_init_global_memory_status_ex = 1; | |
3905 | s_pfn_Global_Memory_Status_Ex = (GlobalMemoryStatusEx_Proc) | |
3906 | GetProcAddress (GetModuleHandle ("kernel32.dll"), | |
3907 | "GlobalMemoryStatusEx"); | |
3908 | } | |
3909 | if (s_pfn_Global_Memory_Status_Ex == NULL) | |
3910 | { | |
3911 | return FALSE; | |
3912 | } | |
3913 | return s_pfn_Global_Memory_Status_Ex (buf); | |
3914 | } | |
3915 | ||
3916 | Lisp_Object | |
b56ceb92 | 3917 | list_system_processes (void) |
7c80d5ec EZ |
3918 | { |
3919 | struct gcpro gcpro1; | |
3920 | Lisp_Object proclist = Qnil; | |
3921 | HANDLE h_snapshot; | |
3922 | ||
3923 | h_snapshot = create_toolhelp32_snapshot (TH32CS_SNAPPROCESS, 0); | |
3924 | ||
3925 | if (h_snapshot != INVALID_HANDLE_VALUE) | |
3926 | { | |
3927 | PROCESSENTRY32 proc_entry; | |
3928 | DWORD proc_id; | |
3929 | BOOL res; | |
3930 | ||
3931 | GCPRO1 (proclist); | |
3932 | ||
3933 | proc_entry.dwSize = sizeof (PROCESSENTRY32); | |
3934 | for (res = process32_first (h_snapshot, &proc_entry); res; | |
3935 | res = process32_next (h_snapshot, &proc_entry)) | |
3936 | { | |
3937 | proc_id = proc_entry.th32ProcessID; | |
3938 | proclist = Fcons (make_fixnum_or_float (proc_id), proclist); | |
3939 | } | |
3940 | ||
3941 | CloseHandle (h_snapshot); | |
3942 | UNGCPRO; | |
3943 | proclist = Fnreverse (proclist); | |
3944 | } | |
3945 | ||
3946 | return proclist; | |
3947 | } | |
3948 | ||
3949 | static int | |
3950 | enable_privilege (LPCTSTR priv_name, BOOL enable_p, TOKEN_PRIVILEGES *old_priv) | |
3951 | { | |
3952 | TOKEN_PRIVILEGES priv; | |
3953 | DWORD priv_size = sizeof (priv); | |
3954 | DWORD opriv_size = sizeof (*old_priv); | |
3955 | HANDLE h_token = NULL; | |
3956 | HANDLE h_thread = GetCurrentThread (); | |
3957 | int ret_val = 0; | |
3958 | BOOL res; | |
3959 | ||
3960 | res = open_thread_token (h_thread, | |
3961 | TOKEN_QUERY | TOKEN_ADJUST_PRIVILEGES, | |
3962 | FALSE, &h_token); | |
3963 | if (!res && GetLastError () == ERROR_NO_TOKEN) | |
3964 | { | |
3965 | if (impersonate_self (SecurityImpersonation)) | |
3966 | res = open_thread_token (h_thread, | |
3967 | TOKEN_QUERY | TOKEN_ADJUST_PRIVILEGES, | |
3968 | FALSE, &h_token); | |
3969 | } | |
3970 | if (res) | |
3971 | { | |
3972 | priv.PrivilegeCount = 1; | |
3973 | priv.Privileges[0].Attributes = enable_p ? SE_PRIVILEGE_ENABLED : 0; | |
3974 | LookupPrivilegeValue (NULL, priv_name, &priv.Privileges[0].Luid); | |
3975 | if (AdjustTokenPrivileges (h_token, FALSE, &priv, priv_size, | |
3976 | old_priv, &opriv_size) | |
3977 | && GetLastError () != ERROR_NOT_ALL_ASSIGNED) | |
3978 | ret_val = 1; | |
3979 | } | |
3980 | if (h_token) | |
3981 | CloseHandle (h_token); | |
3982 | ||
3983 | return ret_val; | |
3984 | } | |
3985 | ||
3986 | static int | |
3987 | restore_privilege (TOKEN_PRIVILEGES *priv) | |
3988 | { | |
3989 | DWORD priv_size = sizeof (*priv); | |
3990 | HANDLE h_token = NULL; | |
3991 | int ret_val = 0; | |
3992 | ||
3993 | if (open_thread_token (GetCurrentThread (), | |
3994 | TOKEN_QUERY | TOKEN_ADJUST_PRIVILEGES, | |
3995 | FALSE, &h_token)) | |
3996 | { | |
3997 | if (AdjustTokenPrivileges (h_token, FALSE, priv, priv_size, NULL, NULL) | |
3998 | && GetLastError () != ERROR_NOT_ALL_ASSIGNED) | |
3999 | ret_val = 1; | |
4000 | } | |
4001 | if (h_token) | |
4002 | CloseHandle (h_token); | |
4003 | ||
4004 | return ret_val; | |
4005 | } | |
4006 | ||
4007 | static Lisp_Object | |
b56ceb92 | 4008 | ltime (long time_sec, long time_usec) |
7c80d5ec EZ |
4009 | { |
4010 | return list3 (make_number ((time_sec >> 16) & 0xffff), | |
4011 | make_number (time_sec & 0xffff), | |
4012 | make_number (time_usec)); | |
4013 | } | |
4014 | ||
5da9424d JB |
4015 | #define U64_TO_LISP_TIME(time) ltime ((time) / 1000000L, (time) % 1000000L) |
4016 | ||
7c80d5ec | 4017 | static int |
b56ceb92 JB |
4018 | process_times (HANDLE h_proc, Lisp_Object *ctime, Lisp_Object *etime, |
4019 | Lisp_Object *stime, Lisp_Object *utime, Lisp_Object *ttime, | |
4020 | double *pcpu) | |
7c80d5ec EZ |
4021 | { |
4022 | FILETIME ft_creation, ft_exit, ft_kernel, ft_user, ft_current; | |
5da9424d | 4023 | ULONGLONG tem1, tem2, tem3, tem; |
7c80d5ec EZ |
4024 | |
4025 | if (!h_proc | |
4026 | || !get_process_times_fn | |
ed3751c8 JB |
4027 | || !(*get_process_times_fn) (h_proc, &ft_creation, &ft_exit, |
4028 | &ft_kernel, &ft_user)) | |
7c80d5ec EZ |
4029 | return 0; |
4030 | ||
4031 | GetSystemTimeAsFileTime (&ft_current); | |
4032 | ||
5da9424d JB |
4033 | FILETIME_TO_U64 (tem1, ft_kernel); |
4034 | tem1 /= 10L; | |
4035 | *stime = U64_TO_LISP_TIME (tem1); | |
4036 | ||
4037 | FILETIME_TO_U64 (tem2, ft_user); | |
4038 | tem2 /= 10L; | |
4039 | *utime = U64_TO_LISP_TIME (tem2); | |
4040 | ||
4041 | tem3 = tem1 + tem2; | |
4042 | *ttime = U64_TO_LISP_TIME (tem3); | |
4043 | ||
4044 | FILETIME_TO_U64 (tem, ft_creation); | |
3af03101 EZ |
4045 | /* Process no 4 (System) returns zero creation time. */ |
4046 | if (tem) | |
5da9424d JB |
4047 | tem = (tem - utc_base) / 10L; |
4048 | *ctime = U64_TO_LISP_TIME (tem); | |
4049 | ||
3af03101 | 4050 | if (tem) |
5da9424d JB |
4051 | { |
4052 | FILETIME_TO_U64 (tem3, ft_current); | |
4053 | tem = (tem3 - utc_base) / 10L - tem; | |
4054 | } | |
4055 | *etime = U64_TO_LISP_TIME (tem); | |
7c80d5ec | 4056 | |
3af03101 EZ |
4057 | if (tem) |
4058 | { | |
4059 | *pcpu = 100.0 * (tem1 + tem2) / tem; | |
4060 | if (*pcpu > 100) | |
4061 | *pcpu = 100.0; | |
4062 | } | |
4063 | else | |
4064 | *pcpu = 0; | |
4065 | ||
4066 | return 1; | |
7c80d5ec EZ |
4067 | } |
4068 | ||
4069 | Lisp_Object | |
b56ceb92 | 4070 | system_process_attributes (Lisp_Object pid) |
7c80d5ec EZ |
4071 | { |
4072 | struct gcpro gcpro1, gcpro2, gcpro3; | |
4073 | Lisp_Object attrs = Qnil; | |
4074 | Lisp_Object cmd_str, decoded_cmd, tem; | |
4075 | HANDLE h_snapshot, h_proc; | |
4076 | DWORD proc_id; | |
754a2d13 | 4077 | int found_proc = 0; |
7c80d5ec | 4078 | char uname[UNLEN+1], gname[GNLEN+1], domain[1025]; |
32cef06e | 4079 | DWORD ulength = sizeof (uname), dlength = sizeof (domain), needed; |
7c80d5ec EZ |
4080 | DWORD glength = sizeof (gname); |
4081 | HANDLE token = NULL; | |
4082 | SID_NAME_USE user_type; | |
32cef06e EZ |
4083 | unsigned char *buf = NULL; |
4084 | DWORD blen = 0; | |
7c80d5ec EZ |
4085 | TOKEN_USER user_token; |
4086 | TOKEN_PRIMARY_GROUP group_token; | |
22749e9a EZ |
4087 | unsigned euid; |
4088 | unsigned egid; | |
7c80d5ec EZ |
4089 | PROCESS_MEMORY_COUNTERS mem; |
4090 | PROCESS_MEMORY_COUNTERS_EX mem_ex; | |
4091 | DWORD minrss, maxrss; | |
4092 | MEMORYSTATUS memst; | |
b8526f6e | 4093 | MEMORY_STATUS_EX memstex; |
7c80d5ec | 4094 | double totphys = 0.0; |
031da700 | 4095 | Lisp_Object ctime, stime, utime, etime, ttime; |
7c80d5ec | 4096 | double pcpu; |
32cef06e | 4097 | BOOL result = FALSE; |
7c80d5ec EZ |
4098 | |
4099 | CHECK_NUMBER_OR_FLOAT (pid); | |
4100 | proc_id = FLOATP (pid) ? XFLOAT_DATA (pid) : XINT (pid); | |
4101 | ||
4102 | h_snapshot = create_toolhelp32_snapshot (TH32CS_SNAPPROCESS, 0); | |
4103 | ||
4104 | GCPRO3 (attrs, decoded_cmd, tem); | |
4105 | ||
4106 | if (h_snapshot != INVALID_HANDLE_VALUE) | |
4107 | { | |
4108 | PROCESSENTRY32 pe; | |
4109 | BOOL res; | |
4110 | ||
4111 | pe.dwSize = sizeof (PROCESSENTRY32); | |
4112 | for (res = process32_first (h_snapshot, &pe); res; | |
4113 | res = process32_next (h_snapshot, &pe)) | |
4114 | { | |
4115 | if (proc_id == pe.th32ProcessID) | |
4116 | { | |
4117 | if (proc_id == 0) | |
4118 | decoded_cmd = build_string ("Idle"); | |
4119 | else | |
4120 | { | |
4121 | /* Decode the command name from locale-specific | |
4122 | encoding. */ | |
4123 | cmd_str = make_unibyte_string (pe.szExeFile, | |
4124 | strlen (pe.szExeFile)); | |
4125 | decoded_cmd = | |
4126 | code_convert_string_norecord (cmd_str, | |
4127 | Vlocale_coding_system, 0); | |
4128 | } | |
4129 | attrs = Fcons (Fcons (Qcomm, decoded_cmd), attrs); | |
4130 | attrs = Fcons (Fcons (Qppid, | |
4131 | make_fixnum_or_float (pe.th32ParentProcessID)), | |
4132 | attrs); | |
4133 | attrs = Fcons (Fcons (Qpri, make_number (pe.pcPriClassBase)), | |
4134 | attrs); | |
4135 | attrs = Fcons (Fcons (Qthcount, | |
4136 | make_fixnum_or_float (pe.cntThreads)), | |
4137 | attrs); | |
754a2d13 | 4138 | found_proc = 1; |
7c80d5ec EZ |
4139 | break; |
4140 | } | |
4141 | } | |
4142 | ||
4143 | CloseHandle (h_snapshot); | |
4144 | } | |
4145 | ||
754a2d13 EZ |
4146 | if (!found_proc) |
4147 | { | |
4148 | UNGCPRO; | |
4149 | return Qnil; | |
4150 | } | |
4151 | ||
7c80d5ec EZ |
4152 | h_proc = OpenProcess (PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, |
4153 | FALSE, proc_id); | |
4154 | /* If we were denied a handle to the process, try again after | |
4155 | enabling the SeDebugPrivilege in our process. */ | |
4156 | if (!h_proc) | |
4157 | { | |
4158 | TOKEN_PRIVILEGES priv_current; | |
4159 | ||
4160 | if (enable_privilege (SE_DEBUG_NAME, TRUE, &priv_current)) | |
4161 | { | |
4162 | h_proc = OpenProcess (PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, | |
4163 | FALSE, proc_id); | |
4164 | restore_privilege (&priv_current); | |
4165 | revert_to_self (); | |
4166 | } | |
4167 | } | |
32cef06e | 4168 | if (h_proc) |
7c80d5ec | 4169 | { |
32cef06e EZ |
4170 | result = open_process_token (h_proc, TOKEN_QUERY, &token); |
4171 | if (result) | |
f8b35b24 | 4172 | { |
32cef06e EZ |
4173 | result = get_token_information (token, TokenUser, NULL, 0, &blen); |
4174 | if (!result && GetLastError () == ERROR_INSUFFICIENT_BUFFER) | |
4175 | { | |
4176 | buf = xmalloc (blen); | |
4177 | result = get_token_information (token, TokenUser, | |
4178 | (LPVOID)buf, blen, &needed); | |
4179 | if (result) | |
4180 | { | |
4181 | memcpy (&user_token, buf, sizeof (user_token)); | |
4182 | if (!w32_cached_id (user_token.User.Sid, &euid, uname)) | |
4183 | { | |
4184 | euid = get_rid (user_token.User.Sid); | |
4185 | result = lookup_account_sid (NULL, user_token.User.Sid, | |
4186 | uname, &ulength, | |
4187 | domain, &dlength, | |
4188 | &user_type); | |
4189 | if (result) | |
4190 | w32_add_to_cache (user_token.User.Sid, euid, uname); | |
4191 | else | |
4192 | { | |
4193 | strcpy (uname, "unknown"); | |
4194 | result = TRUE; | |
4195 | } | |
4196 | } | |
4197 | ulength = strlen (uname); | |
4198 | } | |
4199 | } | |
7c80d5ec | 4200 | } |
32cef06e | 4201 | if (result) |
7c80d5ec | 4202 | { |
32cef06e EZ |
4203 | /* Determine a reasonable euid and gid values. */ |
4204 | if (xstrcasecmp ("administrator", uname) == 0) | |
7c80d5ec | 4205 | { |
32cef06e EZ |
4206 | euid = 500; /* well-known Administrator uid */ |
4207 | egid = 513; /* well-known None gid */ | |
4208 | } | |
4209 | else | |
4210 | { | |
4211 | /* Get group id and name. */ | |
4212 | result = get_token_information (token, TokenPrimaryGroup, | |
4213 | (LPVOID)buf, blen, &needed); | |
4214 | if (!result && GetLastError () == ERROR_INSUFFICIENT_BUFFER) | |
f8b35b24 | 4215 | { |
32cef06e EZ |
4216 | buf = xrealloc (buf, blen = needed); |
4217 | result = get_token_information (token, TokenPrimaryGroup, | |
4218 | (LPVOID)buf, blen, &needed); | |
4219 | } | |
4220 | if (result) | |
4221 | { | |
4222 | memcpy (&group_token, buf, sizeof (group_token)); | |
4223 | if (!w32_cached_id (group_token.PrimaryGroup, &egid, gname)) | |
4224 | { | |
4225 | egid = get_rid (group_token.PrimaryGroup); | |
4226 | dlength = sizeof (domain); | |
4227 | result = | |
4228 | lookup_account_sid (NULL, group_token.PrimaryGroup, | |
4229 | gname, &glength, NULL, &dlength, | |
4230 | &user_type); | |
4231 | if (result) | |
4232 | w32_add_to_cache (group_token.PrimaryGroup, | |
4233 | egid, gname); | |
4234 | else | |
4235 | { | |
4236 | strcpy (gname, "None"); | |
4237 | result = TRUE; | |
4238 | } | |
4239 | } | |
4240 | glength = strlen (gname); | |
f8b35b24 | 4241 | } |
7c80d5ec | 4242 | } |
7c80d5ec | 4243 | } |
5f445726 | 4244 | xfree (buf); |
7c80d5ec | 4245 | } |
32cef06e | 4246 | if (!result) |
7c80d5ec | 4247 | { |
32cef06e EZ |
4248 | if (!is_windows_9x ()) |
4249 | { | |
4250 | /* We couldn't open the process token, presumably because of | |
4251 | insufficient access rights. Assume this process is run | |
4252 | by the system. */ | |
4253 | strcpy (uname, "SYSTEM"); | |
4254 | strcpy (gname, "None"); | |
4255 | euid = 18; /* SYSTEM */ | |
4256 | egid = 513; /* None */ | |
4257 | glength = strlen (gname); | |
4258 | ulength = strlen (uname); | |
4259 | } | |
4260 | /* If we are running under Windows 9X, where security calls are | |
4261 | not supported, we assume all processes are run by the current | |
4262 | user. */ | |
4263 | else if (GetUserName (uname, &ulength)) | |
4264 | { | |
4265 | if (xstrcasecmp ("administrator", uname) == 0) | |
4266 | euid = 0; | |
4267 | else | |
4268 | euid = 123; | |
4269 | egid = euid; | |
4270 | strcpy (gname, "None"); | |
4271 | glength = strlen (gname); | |
4272 | ulength = strlen (uname); | |
4273 | } | |
7c80d5ec | 4274 | else |
32cef06e EZ |
4275 | { |
4276 | euid = 123; | |
4277 | egid = 123; | |
4278 | strcpy (uname, "administrator"); | |
4279 | ulength = strlen (uname); | |
4280 | strcpy (gname, "None"); | |
4281 | glength = strlen (gname); | |
4282 | } | |
4283 | if (token) | |
4284 | CloseHandle (token); | |
7c80d5ec | 4285 | } |
7c80d5ec EZ |
4286 | |
4287 | attrs = Fcons (Fcons (Qeuid, make_fixnum_or_float (euid)), attrs); | |
4288 | tem = make_unibyte_string (uname, ulength); | |
4289 | attrs = Fcons (Fcons (Quser, | |
4290 | code_convert_string_norecord (tem, Vlocale_coding_system, 0)), | |
4291 | attrs); | |
4292 | attrs = Fcons (Fcons (Qegid, make_fixnum_or_float (egid)), attrs); | |
4293 | tem = make_unibyte_string (gname, glength); | |
4294 | attrs = Fcons (Fcons (Qgroup, | |
4295 | code_convert_string_norecord (tem, Vlocale_coding_system, 0)), | |
4296 | attrs); | |
4297 | ||
4298 | if (global_memory_status_ex (&memstex)) | |
235661f6 | 4299 | #if __GNUC__ || (defined (_MSC_VER) && _MSC_VER >= 1300) |
7c80d5ec | 4300 | totphys = memstex.ullTotalPhys / 1024.0; |
235661f6 EZ |
4301 | #else |
4302 | /* Visual Studio 6 cannot convert an unsigned __int64 type to | |
4303 | double, so we need to do this for it... */ | |
4304 | { | |
4305 | DWORD tot_hi = memstex.ullTotalPhys >> 32; | |
4306 | DWORD tot_md = (memstex.ullTotalPhys & 0x00000000ffffffff) >> 10; | |
4307 | DWORD tot_lo = memstex.ullTotalPhys % 1024; | |
4308 | ||
4309 | totphys = tot_hi * 4194304.0 + tot_md + tot_lo / 1024.0; | |
4310 | } | |
4311 | #endif /* __GNUC__ || _MSC_VER >= 1300 */ | |
7c80d5ec EZ |
4312 | else if (global_memory_status (&memst)) |
4313 | totphys = memst.dwTotalPhys / 1024.0; | |
4314 | ||
4315 | if (h_proc | |
4316 | && get_process_memory_info (h_proc, (PROCESS_MEMORY_COUNTERS *)&mem_ex, | |
4317 | sizeof (mem_ex))) | |
4318 | { | |
4319 | DWORD rss = mem_ex.WorkingSetSize / 1024; | |
4320 | ||
4321 | attrs = Fcons (Fcons (Qmajflt, | |
4322 | make_fixnum_or_float (mem_ex.PageFaultCount)), | |
4323 | attrs); | |
4324 | attrs = Fcons (Fcons (Qvsize, | |
4325 | make_fixnum_or_float (mem_ex.PrivateUsage / 1024)), | |
4326 | attrs); | |
4327 | attrs = Fcons (Fcons (Qrss, make_fixnum_or_float (rss)), attrs); | |
4328 | if (totphys) | |
4329 | attrs = Fcons (Fcons (Qpmem, make_float (100. * rss / totphys)), attrs); | |
4330 | } | |
4331 | else if (h_proc | |
4332 | && get_process_memory_info (h_proc, &mem, sizeof (mem))) | |
4333 | { | |
4334 | DWORD rss = mem_ex.WorkingSetSize / 1024; | |
4335 | ||
4336 | attrs = Fcons (Fcons (Qmajflt, | |
4337 | make_fixnum_or_float (mem.PageFaultCount)), | |
4338 | attrs); | |
4339 | attrs = Fcons (Fcons (Qrss, make_fixnum_or_float (rss)), attrs); | |
4340 | if (totphys) | |
4341 | attrs = Fcons (Fcons (Qpmem, make_float (100. * rss / totphys)), attrs); | |
4342 | } | |
4343 | else if (h_proc | |
4344 | && get_process_working_set_size (h_proc, &minrss, &maxrss)) | |
4345 | { | |
4346 | DWORD rss = maxrss / 1024; | |
4347 | ||
4348 | attrs = Fcons (Fcons (Qrss, make_fixnum_or_float (maxrss / 1024)), attrs); | |
4349 | if (totphys) | |
4350 | attrs = Fcons (Fcons (Qpmem, make_float (100. * rss / totphys)), attrs); | |
4351 | } | |
4352 | ||
031da700 | 4353 | if (process_times (h_proc, &ctime, &etime, &stime, &utime, &ttime, &pcpu)) |
7c80d5ec EZ |
4354 | { |
4355 | attrs = Fcons (Fcons (Qutime, utime), attrs); | |
4356 | attrs = Fcons (Fcons (Qstime, stime), attrs); | |
031da700 | 4357 | attrs = Fcons (Fcons (Qtime, ttime), attrs); |
7c80d5ec EZ |
4358 | attrs = Fcons (Fcons (Qstart, ctime), attrs); |
4359 | attrs = Fcons (Fcons (Qetime, etime), attrs); | |
4360 | attrs = Fcons (Fcons (Qpcpu, make_float (pcpu)), attrs); | |
4361 | } | |
4362 | ||
4363 | /* FIXME: Retrieve command line by walking the PEB of the process. */ | |
4364 | ||
4365 | if (h_proc) | |
4366 | CloseHandle (h_proc); | |
4367 | UNGCPRO; | |
4368 | return attrs; | |
4369 | } | |
4370 | ||
4371 | \f | |
480b0c5b GV |
4372 | /* Wrappers for winsock functions to map between our file descriptors |
4373 | and winsock's handles; also set h_errno for convenience. | |
4374 | ||
4375 | To allow Emacs to run on systems which don't have winsock support | |
4376 | installed, we dynamically link to winsock on startup if present, and | |
4377 | otherwise provide the minimum necessary functionality | |
4378 | (eg. gethostname). */ | |
4379 | ||
4380 | /* function pointers for relevant socket functions */ | |
4381 | int (PASCAL *pfn_WSAStartup) (WORD wVersionRequired, LPWSADATA lpWSAData); | |
4382 | void (PASCAL *pfn_WSASetLastError) (int iError); | |
4383 | int (PASCAL *pfn_WSAGetLastError) (void); | |
26fb7bc4 | 4384 | int (PASCAL *pfn_WSAEventSelect) (SOCKET s, HANDLE hEventObject, long lNetworkEvents); |
64570b36 KS |
4385 | HANDLE (PASCAL *pfn_WSACreateEvent) (void); |
4386 | int (PASCAL *pfn_WSACloseEvent) (HANDLE hEvent); | |
480b0c5b GV |
4387 | int (PASCAL *pfn_socket) (int af, int type, int protocol); |
4388 | int (PASCAL *pfn_bind) (SOCKET s, const struct sockaddr *addr, int namelen); | |
4389 | int (PASCAL *pfn_connect) (SOCKET s, const struct sockaddr *addr, int namelen); | |
4390 | int (PASCAL *pfn_ioctlsocket) (SOCKET s, long cmd, u_long *argp); | |
4391 | int (PASCAL *pfn_recv) (SOCKET s, char * buf, int len, int flags); | |
4392 | int (PASCAL *pfn_send) (SOCKET s, const char * buf, int len, int flags); | |
4393 | int (PASCAL *pfn_closesocket) (SOCKET s); | |
4394 | int (PASCAL *pfn_shutdown) (SOCKET s, int how); | |
4395 | int (PASCAL *pfn_WSACleanup) (void); | |
4396 | ||
4397 | u_short (PASCAL *pfn_htons) (u_short hostshort); | |
4398 | u_short (PASCAL *pfn_ntohs) (u_short netshort); | |
4399 | unsigned long (PASCAL *pfn_inet_addr) (const char * cp); | |
4400 | int (PASCAL *pfn_gethostname) (char * name, int namelen); | |
4401 | struct hostent * (PASCAL *pfn_gethostbyname) (const char * name); | |
4402 | struct servent * (PASCAL *pfn_getservbyname) (const char * name, const char * proto); | |
ecd270eb | 4403 | int (PASCAL *pfn_getpeername) (SOCKET s, struct sockaddr *addr, int * namelen); |
962955c5 JR |
4404 | int (PASCAL *pfn_setsockopt) (SOCKET s, int level, int optname, |
4405 | const char * optval, int optlen); | |
4406 | int (PASCAL *pfn_listen) (SOCKET s, int backlog); | |
4407 | int (PASCAL *pfn_getsockname) (SOCKET s, struct sockaddr * name, | |
4408 | int * namelen); | |
4409 | SOCKET (PASCAL *pfn_accept) (SOCKET s, struct sockaddr * addr, int * addrlen); | |
4410 | int (PASCAL *pfn_recvfrom) (SOCKET s, char * buf, int len, int flags, | |
4411 | struct sockaddr * from, int * fromlen); | |
4412 | int (PASCAL *pfn_sendto) (SOCKET s, const char * buf, int len, int flags, | |
4413 | const struct sockaddr * to, int tolen); | |
4414 | ||
f1614061 RS |
4415 | /* SetHandleInformation is only needed to make sockets non-inheritable. */ |
4416 | BOOL (WINAPI *pfn_SetHandleInformation) (HANDLE object, DWORD mask, DWORD flags); | |
4417 | #ifndef HANDLE_FLAG_INHERIT | |
4418 | #define HANDLE_FLAG_INHERIT 1 | |
4419 | #endif | |
480b0c5b | 4420 | |
f249a012 RS |
4421 | HANDLE winsock_lib; |
4422 | static int winsock_inuse; | |
480b0c5b | 4423 | |
f249a012 | 4424 | BOOL |
480b0c5b GV |
4425 | term_winsock (void) |
4426 | { | |
f249a012 | 4427 | if (winsock_lib != NULL && winsock_inuse == 0) |
480b0c5b | 4428 | { |
f249a012 RS |
4429 | /* Not sure what would cause WSAENETDOWN, or even if it can happen |
4430 | after WSAStartup returns successfully, but it seems reasonable | |
4431 | to allow unloading winsock anyway in that case. */ | |
4432 | if (pfn_WSACleanup () == 0 || | |
4433 | pfn_WSAGetLastError () == WSAENETDOWN) | |
4434 | { | |
4435 | if (FreeLibrary (winsock_lib)) | |
4436 | winsock_lib = NULL; | |
4437 | return TRUE; | |
4438 | } | |
480b0c5b | 4439 | } |
f249a012 | 4440 | return FALSE; |
480b0c5b GV |
4441 | } |
4442 | ||
f249a012 RS |
4443 | BOOL |
4444 | init_winsock (int load_now) | |
480b0c5b GV |
4445 | { |
4446 | WSADATA winsockData; | |
4447 | ||
f249a012 RS |
4448 | if (winsock_lib != NULL) |
4449 | return TRUE; | |
f1614061 | 4450 | |
f1614061 RS |
4451 | pfn_SetHandleInformation |
4452 | = (void *) GetProcAddress (GetModuleHandle ("kernel32.dll"), | |
4453 | "SetHandleInformation"); | |
4454 | ||
64570b36 | 4455 | winsock_lib = LoadLibrary ("Ws2_32.dll"); |
480b0c5b GV |
4456 | |
4457 | if (winsock_lib != NULL) | |
4458 | { | |
4459 | /* dynamically link to socket functions */ | |
4460 | ||
4461 | #define LOAD_PROC(fn) \ | |
4462 | if ((pfn_##fn = (void *) GetProcAddress (winsock_lib, #fn)) == NULL) \ | |
4463 | goto fail; | |
4464 | ||
ed3751c8 JB |
4465 | LOAD_PROC (WSAStartup); |
4466 | LOAD_PROC (WSASetLastError); | |
4467 | LOAD_PROC (WSAGetLastError); | |
4468 | LOAD_PROC (WSAEventSelect); | |
4469 | LOAD_PROC (WSACreateEvent); | |
4470 | LOAD_PROC (WSACloseEvent); | |
4471 | LOAD_PROC (socket); | |
4472 | LOAD_PROC (bind); | |
4473 | LOAD_PROC (connect); | |
4474 | LOAD_PROC (ioctlsocket); | |
4475 | LOAD_PROC (recv); | |
4476 | LOAD_PROC (send); | |
4477 | LOAD_PROC (closesocket); | |
4478 | LOAD_PROC (shutdown); | |
4479 | LOAD_PROC (htons); | |
4480 | LOAD_PROC (ntohs); | |
4481 | LOAD_PROC (inet_addr); | |
4482 | LOAD_PROC (gethostname); | |
4483 | LOAD_PROC (gethostbyname); | |
4484 | LOAD_PROC (getservbyname); | |
4485 | LOAD_PROC (getpeername); | |
4486 | LOAD_PROC (WSACleanup); | |
4487 | LOAD_PROC (setsockopt); | |
4488 | LOAD_PROC (listen); | |
4489 | LOAD_PROC (getsockname); | |
4490 | LOAD_PROC (accept); | |
4491 | LOAD_PROC (recvfrom); | |
4492 | LOAD_PROC (sendto); | |
f249a012 RS |
4493 | #undef LOAD_PROC |
4494 | ||
480b0c5b GV |
4495 | /* specify version 1.1 of winsock */ |
4496 | if (pfn_WSAStartup (0x101, &winsockData) == 0) | |
4497 | { | |
f249a012 RS |
4498 | if (winsockData.wVersion != 0x101) |
4499 | goto fail; | |
4500 | ||
4501 | if (!load_now) | |
4502 | { | |
4503 | /* Report that winsock exists and is usable, but leave | |
4504 | socket functions disabled. I am assuming that calling | |
4505 | WSAStartup does not require any network interaction, | |
4506 | and in particular does not cause or require a dial-up | |
4507 | connection to be established. */ | |
4508 | ||
4509 | pfn_WSACleanup (); | |
4510 | FreeLibrary (winsock_lib); | |
4511 | winsock_lib = NULL; | |
4512 | } | |
4513 | winsock_inuse = 0; | |
4514 | return TRUE; | |
480b0c5b GV |
4515 | } |
4516 | ||
4517 | fail: | |
4518 | FreeLibrary (winsock_lib); | |
f249a012 | 4519 | winsock_lib = NULL; |
480b0c5b | 4520 | } |
f249a012 RS |
4521 | |
4522 | return FALSE; | |
480b0c5b GV |
4523 | } |
4524 | ||
4525 | ||
4526 | int h_errno = 0; | |
4527 | ||
f8381794 | 4528 | /* function to set h_errno for compatibility; map winsock error codes to |
480b0c5b GV |
4529 | normal system codes where they overlap (non-overlapping definitions |
4530 | are already in <sys/socket.h> */ | |
9bfb11f9 | 4531 | static void |
b56ceb92 | 4532 | set_errno (void) |
480b0c5b | 4533 | { |
f249a012 | 4534 | if (winsock_lib == NULL) |
480b0c5b GV |
4535 | h_errno = EINVAL; |
4536 | else | |
4537 | h_errno = pfn_WSAGetLastError (); | |
4538 | ||
4539 | switch (h_errno) | |
4540 | { | |
4541 | case WSAEACCES: h_errno = EACCES; break; | |
4542 | case WSAEBADF: h_errno = EBADF; break; | |
4543 | case WSAEFAULT: h_errno = EFAULT; break; | |
4544 | case WSAEINTR: h_errno = EINTR; break; | |
4545 | case WSAEINVAL: h_errno = EINVAL; break; | |
4546 | case WSAEMFILE: h_errno = EMFILE; break; | |
4547 | case WSAENAMETOOLONG: h_errno = ENAMETOOLONG; break; | |
4548 | case WSAENOTEMPTY: h_errno = ENOTEMPTY; break; | |
4549 | } | |
4550 | errno = h_errno; | |
4551 | } | |
4552 | ||
9bfb11f9 | 4553 | static void |
b56ceb92 | 4554 | check_errno (void) |
480b0c5b | 4555 | { |
f249a012 | 4556 | if (h_errno == 0 && winsock_lib != NULL) |
480b0c5b GV |
4557 | pfn_WSASetLastError (0); |
4558 | } | |
4559 | ||
d8fcc1b9 AI |
4560 | /* Extend strerror to handle the winsock-specific error codes. */ |
4561 | struct { | |
4562 | int errnum; | |
4563 | char * msg; | |
4564 | } _wsa_errlist[] = { | |
1db5b1ad JB |
4565 | {WSAEINTR , "Interrupted function call"}, |
4566 | {WSAEBADF , "Bad file descriptor"}, | |
4567 | {WSAEACCES , "Permission denied"}, | |
4568 | {WSAEFAULT , "Bad address"}, | |
4569 | {WSAEINVAL , "Invalid argument"}, | |
4570 | {WSAEMFILE , "Too many open files"}, | |
4571 | ||
4572 | {WSAEWOULDBLOCK , "Resource temporarily unavailable"}, | |
4573 | {WSAEINPROGRESS , "Operation now in progress"}, | |
4574 | {WSAEALREADY , "Operation already in progress"}, | |
4575 | {WSAENOTSOCK , "Socket operation on non-socket"}, | |
4576 | {WSAEDESTADDRREQ , "Destination address required"}, | |
4577 | {WSAEMSGSIZE , "Message too long"}, | |
4578 | {WSAEPROTOTYPE , "Protocol wrong type for socket"}, | |
4579 | {WSAENOPROTOOPT , "Bad protocol option"}, | |
4580 | {WSAEPROTONOSUPPORT , "Protocol not supported"}, | |
4581 | {WSAESOCKTNOSUPPORT , "Socket type not supported"}, | |
4582 | {WSAEOPNOTSUPP , "Operation not supported"}, | |
4583 | {WSAEPFNOSUPPORT , "Protocol family not supported"}, | |
4584 | {WSAEAFNOSUPPORT , "Address family not supported by protocol family"}, | |
4585 | {WSAEADDRINUSE , "Address already in use"}, | |
4586 | {WSAEADDRNOTAVAIL , "Cannot assign requested address"}, | |
4587 | {WSAENETDOWN , "Network is down"}, | |
4588 | {WSAENETUNREACH , "Network is unreachable"}, | |
4589 | {WSAENETRESET , "Network dropped connection on reset"}, | |
4590 | {WSAECONNABORTED , "Software caused connection abort"}, | |
4591 | {WSAECONNRESET , "Connection reset by peer"}, | |
4592 | {WSAENOBUFS , "No buffer space available"}, | |
4593 | {WSAEISCONN , "Socket is already connected"}, | |
4594 | {WSAENOTCONN , "Socket is not connected"}, | |
4595 | {WSAESHUTDOWN , "Cannot send after socket shutdown"}, | |
4596 | {WSAETOOMANYREFS , "Too many references"}, /* not sure */ | |
4597 | {WSAETIMEDOUT , "Connection timed out"}, | |
4598 | {WSAECONNREFUSED , "Connection refused"}, | |
4599 | {WSAELOOP , "Network loop"}, /* not sure */ | |
4600 | {WSAENAMETOOLONG , "Name is too long"}, | |
4601 | {WSAEHOSTDOWN , "Host is down"}, | |
4602 | {WSAEHOSTUNREACH , "No route to host"}, | |
4603 | {WSAENOTEMPTY , "Buffer not empty"}, /* not sure */ | |
4604 | {WSAEPROCLIM , "Too many processes"}, | |
4605 | {WSAEUSERS , "Too many users"}, /* not sure */ | |
4606 | {WSAEDQUOT , "Double quote in host name"}, /* really not sure */ | |
4607 | {WSAESTALE , "Data is stale"}, /* not sure */ | |
4608 | {WSAEREMOTE , "Remote error"}, /* not sure */ | |
4609 | ||
4610 | {WSASYSNOTREADY , "Network subsystem is unavailable"}, | |
4611 | {WSAVERNOTSUPPORTED , "WINSOCK.DLL version out of range"}, | |
4612 | {WSANOTINITIALISED , "Winsock not initialized successfully"}, | |
4613 | {WSAEDISCON , "Graceful shutdown in progress"}, | |
d8fcc1b9 | 4614 | #ifdef WSAENOMORE |
1db5b1ad JB |
4615 | {WSAENOMORE , "No more operations allowed"}, /* not sure */ |
4616 | {WSAECANCELLED , "Operation cancelled"}, /* not sure */ | |
4617 | {WSAEINVALIDPROCTABLE , "Invalid procedure table from service provider"}, | |
4618 | {WSAEINVALIDPROVIDER , "Invalid service provider version number"}, | |
4619 | {WSAEPROVIDERFAILEDINIT , "Unable to initialize a service provider"}, | |
4620 | {WSASYSCALLFAILURE , "System call failure"}, | |
4621 | {WSASERVICE_NOT_FOUND , "Service not found"}, /* not sure */ | |
4622 | {WSATYPE_NOT_FOUND , "Class type not found"}, | |
4623 | {WSA_E_NO_MORE , "No more resources available"}, /* really not sure */ | |
4624 | {WSA_E_CANCELLED , "Operation already cancelled"}, /* really not sure */ | |
4625 | {WSAEREFUSED , "Operation refused"}, /* not sure */ | |
d8fcc1b9 | 4626 | #endif |
177c0ea7 | 4627 | |
1db5b1ad JB |
4628 | {WSAHOST_NOT_FOUND , "Host not found"}, |
4629 | {WSATRY_AGAIN , "Authoritative host not found during name lookup"}, | |
4630 | {WSANO_RECOVERY , "Non-recoverable error during name lookup"}, | |
4631 | {WSANO_DATA , "Valid name, no data record of requested type"}, | |
d8fcc1b9 | 4632 | |
1db5b1ad | 4633 | {-1, NULL} |
d8fcc1b9 AI |
4634 | }; |
4635 | ||
4636 | char * | |
ed3751c8 | 4637 | sys_strerror (int error_no) |
d8fcc1b9 AI |
4638 | { |
4639 | int i; | |
4640 | static char unknown_msg[40]; | |
4641 | ||
a302c7ae AI |
4642 | if (error_no >= 0 && error_no < sys_nerr) |
4643 | return sys_errlist[error_no]; | |
d8fcc1b9 AI |
4644 | |
4645 | for (i = 0; _wsa_errlist[i].errnum >= 0; i++) | |
4646 | if (_wsa_errlist[i].errnum == error_no) | |
4647 | return _wsa_errlist[i].msg; | |
4648 | ||
ed3751c8 | 4649 | sprintf (unknown_msg, "Unidentified error: %d", error_no); |
d8fcc1b9 AI |
4650 | return unknown_msg; |
4651 | } | |
4652 | ||
480b0c5b GV |
4653 | /* [andrewi 3-May-96] I've had conflicting results using both methods, |
4654 | but I believe the method of keeping the socket handle separate (and | |
4655 | insuring it is not inheritable) is the correct one. */ | |
4656 | ||
480b0c5b | 4657 | #define SOCK_HANDLE(fd) ((SOCKET) fd_info[fd].hnd) |
480b0c5b | 4658 | |
bedf4aab | 4659 | static int socket_to_fd (SOCKET s); |
962955c5 | 4660 | |
480b0c5b | 4661 | int |
ed3751c8 | 4662 | sys_socket (int af, int type, int protocol) |
480b0c5b | 4663 | { |
962955c5 | 4664 | SOCKET s; |
480b0c5b | 4665 | |
f249a012 | 4666 | if (winsock_lib == NULL) |
480b0c5b GV |
4667 | { |
4668 | h_errno = ENETDOWN; | |
4669 | return INVALID_SOCKET; | |
4670 | } | |
4671 | ||
4672 | check_errno (); | |
4673 | ||
4674 | /* call the real socket function */ | |
962955c5 | 4675 | s = pfn_socket (af, type, protocol); |
177c0ea7 | 4676 | |
480b0c5b | 4677 | if (s != INVALID_SOCKET) |
962955c5 | 4678 | return socket_to_fd (s); |
480b0c5b | 4679 | |
962955c5 JR |
4680 | set_errno (); |
4681 | return -1; | |
4682 | } | |
4683 | ||
4684 | /* Convert a SOCKET to a file descriptor. */ | |
bedf4aab | 4685 | static int |
962955c5 JR |
4686 | socket_to_fd (SOCKET s) |
4687 | { | |
4688 | int fd; | |
4689 | child_process * cp; | |
4690 | ||
4691 | /* Although under NT 3.5 _open_osfhandle will accept a socket | |
4692 | handle, if opened with SO_OPENTYPE == SO_SYNCHRONOUS_NONALERT, | |
4693 | that does not work under NT 3.1. However, we can get the same | |
4694 | effect by using a backdoor function to replace an existing | |
4695 | descriptor handle with the one we want. */ | |
4696 | ||
4697 | /* allocate a file descriptor (with appropriate flags) */ | |
4698 | fd = _open ("NUL:", _O_RDWR); | |
4699 | if (fd >= 0) | |
4700 | { | |
962955c5 JR |
4701 | /* Make a non-inheritable copy of the socket handle. Note |
4702 | that it is possible that sockets aren't actually kernel | |
4703 | handles, which appears to be the case on Windows 9x when | |
4704 | the MS Proxy winsock client is installed. */ | |
4705 | { | |
4706 | /* Apparently there is a bug in NT 3.51 with some service | |
4707 | packs, which prevents using DuplicateHandle to make a | |
4708 | socket handle non-inheritable (causes WSACleanup to | |
4709 | hang). The work-around is to use SetHandleInformation | |
4710 | instead if it is available and implemented. */ | |
4711 | if (pfn_SetHandleInformation) | |
480b0c5b | 4712 | { |
962955c5 JR |
4713 | pfn_SetHandleInformation ((HANDLE) s, HANDLE_FLAG_INHERIT, 0); |
4714 | } | |
4715 | else | |
4716 | { | |
4717 | HANDLE parent = GetCurrentProcess (); | |
4718 | HANDLE new_s = INVALID_HANDLE_VALUE; | |
4719 | ||
4720 | if (DuplicateHandle (parent, | |
4721 | (HANDLE) s, | |
4722 | parent, | |
4723 | &new_s, | |
4724 | 0, | |
4725 | FALSE, | |
4726 | DUPLICATE_SAME_ACCESS)) | |
f1614061 | 4727 | { |
962955c5 JR |
4728 | /* It is possible that DuplicateHandle succeeds even |
4729 | though the socket wasn't really a kernel handle, | |
4730 | because a real handle has the same value. So | |
4731 | test whether the new handle really is a socket. */ | |
4732 | long nonblocking = 0; | |
4733 | if (pfn_ioctlsocket ((SOCKET) new_s, FIONBIO, &nonblocking) == 0) | |
ca149beb | 4734 | { |
962955c5 JR |
4735 | pfn_closesocket (s); |
4736 | s = (SOCKET) new_s; | |
4737 | } | |
4738 | else | |
4739 | { | |
4740 | CloseHandle (new_s); | |
4741 | } | |
177c0ea7 | 4742 | } |
480b0c5b | 4743 | } |
962955c5 JR |
4744 | } |
4745 | fd_info[fd].hnd = (HANDLE) s; | |
480b0c5b | 4746 | |
962955c5 JR |
4747 | /* set our own internal flags */ |
4748 | fd_info[fd].flags = FILE_SOCKET | FILE_BINARY | FILE_READ | FILE_WRITE; | |
480b0c5b | 4749 | |
962955c5 JR |
4750 | cp = new_child (); |
4751 | if (cp) | |
4752 | { | |
4753 | cp->fd = fd; | |
4754 | cp->status = STATUS_READ_ACKNOWLEDGED; | |
480b0c5b | 4755 | |
962955c5 JR |
4756 | /* attach child_process to fd_info */ |
4757 | if (fd_info[ fd ].cp != NULL) | |
4758 | { | |
4759 | DebPrint (("sys_socket: fd_info[%d] apparently in use!\n", fd)); | |
4760 | abort (); | |
480b0c5b GV |
4761 | } |
4762 | ||
962955c5 JR |
4763 | fd_info[ fd ].cp = cp; |
4764 | ||
4765 | /* success! */ | |
4766 | winsock_inuse++; /* count open sockets */ | |
4767 | return fd; | |
480b0c5b | 4768 | } |
480b0c5b | 4769 | |
962955c5 JR |
4770 | /* clean up */ |
4771 | _close (fd); | |
4772 | } | |
4773 | pfn_closesocket (s); | |
4774 | h_errno = EMFILE; | |
480b0c5b GV |
4775 | return -1; |
4776 | } | |
4777 | ||
480b0c5b GV |
4778 | int |
4779 | sys_bind (int s, const struct sockaddr * addr, int namelen) | |
4780 | { | |
f249a012 | 4781 | if (winsock_lib == NULL) |
480b0c5b GV |
4782 | { |
4783 | h_errno = ENOTSOCK; | |
4784 | return SOCKET_ERROR; | |
4785 | } | |
4786 | ||
4787 | check_errno (); | |
4788 | if (fd_info[s].flags & FILE_SOCKET) | |
4789 | { | |
4790 | int rc = pfn_bind (SOCK_HANDLE (s), addr, namelen); | |
4791 | if (rc == SOCKET_ERROR) | |
4792 | set_errno (); | |
4793 | return rc; | |
4794 | } | |
4795 | h_errno = ENOTSOCK; | |
4796 | return SOCKET_ERROR; | |
4797 | } | |
4798 | ||
480b0c5b GV |
4799 | int |
4800 | sys_connect (int s, const struct sockaddr * name, int namelen) | |
4801 | { | |
f249a012 | 4802 | if (winsock_lib == NULL) |
480b0c5b GV |
4803 | { |
4804 | h_errno = ENOTSOCK; | |
4805 | return SOCKET_ERROR; | |
4806 | } | |
4807 | ||
4808 | check_errno (); | |
4809 | if (fd_info[s].flags & FILE_SOCKET) | |
4810 | { | |
4811 | int rc = pfn_connect (SOCK_HANDLE (s), name, namelen); | |
4812 | if (rc == SOCKET_ERROR) | |
4813 | set_errno (); | |
4814 | return rc; | |
4815 | } | |
4816 | h_errno = ENOTSOCK; | |
4817 | return SOCKET_ERROR; | |
4818 | } | |
4819 | ||
4820 | u_short | |
4821 | sys_htons (u_short hostshort) | |
4822 | { | |
f249a012 | 4823 | return (winsock_lib != NULL) ? |
480b0c5b GV |
4824 | pfn_htons (hostshort) : hostshort; |
4825 | } | |
4826 | ||
4827 | u_short | |
4828 | sys_ntohs (u_short netshort) | |
4829 | { | |
f249a012 | 4830 | return (winsock_lib != NULL) ? |
480b0c5b GV |
4831 | pfn_ntohs (netshort) : netshort; |
4832 | } | |
4833 | ||
4834 | unsigned long | |
4835 | sys_inet_addr (const char * cp) | |
4836 | { | |
f249a012 | 4837 | return (winsock_lib != NULL) ? |
480b0c5b GV |
4838 | pfn_inet_addr (cp) : INADDR_NONE; |
4839 | } | |
4840 | ||
4841 | int | |
4842 | sys_gethostname (char * name, int namelen) | |
4843 | { | |
f249a012 | 4844 | if (winsock_lib != NULL) |
480b0c5b GV |
4845 | return pfn_gethostname (name, namelen); |
4846 | ||
4847 | if (namelen > MAX_COMPUTERNAME_LENGTH) | |
a302c7ae | 4848 | return !GetComputerName (name, (DWORD *)&namelen); |
480b0c5b GV |
4849 | |
4850 | h_errno = EFAULT; | |
4851 | return SOCKET_ERROR; | |
4852 | } | |
4853 | ||
4854 | struct hostent * | |
ed3751c8 | 4855 | sys_gethostbyname (const char * name) |
480b0c5b GV |
4856 | { |
4857 | struct hostent * host; | |
4858 | ||
f249a012 | 4859 | if (winsock_lib == NULL) |
480b0c5b GV |
4860 | { |
4861 | h_errno = ENETDOWN; | |
4862 | return NULL; | |
4863 | } | |
4864 | ||
4865 | check_errno (); | |
4866 | host = pfn_gethostbyname (name); | |
4867 | if (!host) | |
4868 | set_errno (); | |
4869 | return host; | |
4870 | } | |
4871 | ||
4872 | struct servent * | |
ed3751c8 | 4873 | sys_getservbyname (const char * name, const char * proto) |
480b0c5b GV |
4874 | { |
4875 | struct servent * serv; | |
4876 | ||
f249a012 | 4877 | if (winsock_lib == NULL) |
480b0c5b GV |
4878 | { |
4879 | h_errno = ENETDOWN; | |
4880 | return NULL; | |
4881 | } | |
4882 | ||
4883 | check_errno (); | |
4884 | serv = pfn_getservbyname (name, proto); | |
4885 | if (!serv) | |
4886 | set_errno (); | |
4887 | return serv; | |
4888 | } | |
4889 | ||
ecd270eb JR |
4890 | int |
4891 | sys_getpeername (int s, struct sockaddr *addr, int * namelen) | |
4892 | { | |
4893 | if (winsock_lib == NULL) | |
4894 | { | |
4895 | h_errno = ENETDOWN; | |
4896 | return SOCKET_ERROR; | |
4897 | } | |
4898 | ||
4899 | check_errno (); | |
4900 | if (fd_info[s].flags & FILE_SOCKET) | |
4901 | { | |
4902 | int rc = pfn_getpeername (SOCK_HANDLE (s), addr, namelen); | |
4903 | if (rc == SOCKET_ERROR) | |
4904 | set_errno (); | |
4905 | return rc; | |
4906 | } | |
4907 | h_errno = ENOTSOCK; | |
4908 | return SOCKET_ERROR; | |
4909 | } | |
4910 | ||
380961a6 GV |
4911 | int |
4912 | sys_shutdown (int s, int how) | |
4913 | { | |
380961a6 GV |
4914 | if (winsock_lib == NULL) |
4915 | { | |
4916 | h_errno = ENETDOWN; | |
4917 | return SOCKET_ERROR; | |
4918 | } | |
4919 | ||
4920 | check_errno (); | |
4921 | if (fd_info[s].flags & FILE_SOCKET) | |
4922 | { | |
4923 | int rc = pfn_shutdown (SOCK_HANDLE (s), how); | |
962955c5 JR |
4924 | if (rc == SOCKET_ERROR) |
4925 | set_errno (); | |
4926 | return rc; | |
4927 | } | |
4928 | h_errno = ENOTSOCK; | |
4929 | return SOCKET_ERROR; | |
4930 | } | |
4931 | ||
4932 | int | |
a5a389bb | 4933 | sys_setsockopt (int s, int level, int optname, const void * optval, int optlen) |
962955c5 JR |
4934 | { |
4935 | if (winsock_lib == NULL) | |
4936 | { | |
4937 | h_errno = ENETDOWN; | |
4938 | return SOCKET_ERROR; | |
4939 | } | |
4940 | ||
4941 | check_errno (); | |
4942 | if (fd_info[s].flags & FILE_SOCKET) | |
4943 | { | |
4944 | int rc = pfn_setsockopt (SOCK_HANDLE (s), level, optname, | |
a5a389bb | 4945 | (const char *)optval, optlen); |
962955c5 JR |
4946 | if (rc == SOCKET_ERROR) |
4947 | set_errno (); | |
4948 | return rc; | |
4949 | } | |
4950 | h_errno = ENOTSOCK; | |
177c0ea7 | 4951 | return SOCKET_ERROR; |
962955c5 JR |
4952 | } |
4953 | ||
4954 | int | |
4955 | sys_listen (int s, int backlog) | |
4956 | { | |
4957 | if (winsock_lib == NULL) | |
4958 | { | |
4959 | h_errno = ENETDOWN; | |
4960 | return SOCKET_ERROR; | |
4961 | } | |
4962 | ||
4963 | check_errno (); | |
4964 | if (fd_info[s].flags & FILE_SOCKET) | |
4965 | { | |
4966 | int rc = pfn_listen (SOCK_HANDLE (s), backlog); | |
4967 | if (rc == SOCKET_ERROR) | |
4968 | set_errno (); | |
26fb7bc4 | 4969 | else |
64570b36 | 4970 | fd_info[s].flags |= FILE_LISTEN; |
962955c5 JR |
4971 | return rc; |
4972 | } | |
4973 | h_errno = ENOTSOCK; | |
177c0ea7 | 4974 | return SOCKET_ERROR; |
962955c5 JR |
4975 | } |
4976 | ||
4977 | int | |
4978 | sys_getsockname (int s, struct sockaddr * name, int * namelen) | |
4979 | { | |
4980 | if (winsock_lib == NULL) | |
4981 | { | |
4982 | h_errno = ENETDOWN; | |
4983 | return SOCKET_ERROR; | |
4984 | } | |
4985 | ||
4986 | check_errno (); | |
4987 | if (fd_info[s].flags & FILE_SOCKET) | |
4988 | { | |
4989 | int rc = pfn_getsockname (SOCK_HANDLE (s), name, namelen); | |
4990 | if (rc == SOCKET_ERROR) | |
4991 | set_errno (); | |
4992 | return rc; | |
4993 | } | |
4994 | h_errno = ENOTSOCK; | |
177c0ea7 | 4995 | return SOCKET_ERROR; |
962955c5 JR |
4996 | } |
4997 | ||
4998 | int | |
4999 | sys_accept (int s, struct sockaddr * addr, int * addrlen) | |
5000 | { | |
5001 | if (winsock_lib == NULL) | |
5002 | { | |
5003 | h_errno = ENETDOWN; | |
5004 | return -1; | |
5005 | } | |
5006 | ||
5007 | check_errno (); | |
26fb7bc4 | 5008 | if (fd_info[s].flags & FILE_LISTEN) |
962955c5 | 5009 | { |
a0ad1860 | 5010 | SOCKET t = pfn_accept (SOCK_HANDLE (s), addr, addrlen); |
64570b36 KS |
5011 | int fd = -1; |
5012 | if (t == INVALID_SOCKET) | |
5013 | set_errno (); | |
5014 | else | |
5015 | fd = socket_to_fd (t); | |
962955c5 | 5016 | |
64570b36 KS |
5017 | fd_info[s].cp->status = STATUS_READ_ACKNOWLEDGED; |
5018 | ResetEvent (fd_info[s].cp->char_avail); | |
5019 | return fd; | |
962955c5 JR |
5020 | } |
5021 | h_errno = ENOTSOCK; | |
5022 | return -1; | |
5023 | } | |
5024 | ||
5025 | int | |
5026 | sys_recvfrom (int s, char * buf, int len, int flags, | |
b56ceb92 | 5027 | struct sockaddr * from, int * fromlen) |
962955c5 JR |
5028 | { |
5029 | if (winsock_lib == NULL) | |
5030 | { | |
5031 | h_errno = ENETDOWN; | |
5032 | return SOCKET_ERROR; | |
5033 | } | |
5034 | ||
5035 | check_errno (); | |
5036 | if (fd_info[s].flags & FILE_SOCKET) | |
5037 | { | |
5038 | int rc = pfn_recvfrom (SOCK_HANDLE (s), buf, len, flags, from, fromlen); | |
5039 | if (rc == SOCKET_ERROR) | |
5040 | set_errno (); | |
5041 | return rc; | |
5042 | } | |
5043 | h_errno = ENOTSOCK; | |
5044 | return SOCKET_ERROR; | |
5045 | } | |
5046 | ||
5047 | int | |
5048 | sys_sendto (int s, const char * buf, int len, int flags, | |
5049 | const struct sockaddr * to, int tolen) | |
5050 | { | |
5051 | if (winsock_lib == NULL) | |
5052 | { | |
5053 | h_errno = ENETDOWN; | |
5054 | return SOCKET_ERROR; | |
5055 | } | |
5056 | ||
5057 | check_errno (); | |
5058 | if (fd_info[s].flags & FILE_SOCKET) | |
5059 | { | |
5060 | int rc = pfn_sendto (SOCK_HANDLE (s), buf, len, flags, to, tolen); | |
380961a6 GV |
5061 | if (rc == SOCKET_ERROR) |
5062 | set_errno (); | |
5063 | return rc; | |
5064 | } | |
5065 | h_errno = ENOTSOCK; | |
5066 | return SOCKET_ERROR; | |
5067 | } | |
5068 | ||
ecd270eb JR |
5069 | /* Windows does not have an fcntl function. Provide an implementation |
5070 | solely for making sockets non-blocking. */ | |
5071 | int | |
5072 | fcntl (int s, int cmd, int options) | |
5073 | { | |
5074 | if (winsock_lib == NULL) | |
5075 | { | |
5076 | h_errno = ENETDOWN; | |
5077 | return -1; | |
5078 | } | |
5079 | ||
5080 | check_errno (); | |
5081 | if (fd_info[s].flags & FILE_SOCKET) | |
5082 | { | |
5083 | if (cmd == F_SETFL && options == O_NDELAY) | |
5084 | { | |
5085 | unsigned long nblock = 1; | |
5086 | int rc = pfn_ioctlsocket (SOCK_HANDLE (s), FIONBIO, &nblock); | |
5087 | if (rc == SOCKET_ERROR) | |
9d4f32e8 | 5088 | set_errno (); |
ecd270eb JR |
5089 | /* Keep track of the fact that we set this to non-blocking. */ |
5090 | fd_info[s].flags |= FILE_NDELAY; | |
5091 | return rc; | |
5092 | } | |
5093 | else | |
5094 | { | |
5095 | h_errno = EINVAL; | |
5096 | return SOCKET_ERROR; | |
5097 | } | |
5098 | } | |
5099 | h_errno = ENOTSOCK; | |
5100 | return SOCKET_ERROR; | |
5101 | } | |
5102 | ||
480b0c5b GV |
5103 | |
5104 | /* Shadow main io functions: we need to handle pipes and sockets more | |
5105 | intelligently, and implement non-blocking mode as well. */ | |
5106 | ||
5107 | int | |
5108 | sys_close (int fd) | |
5109 | { | |
5110 | int rc; | |
5111 | ||
7559f399 | 5112 | if (fd < 0) |
480b0c5b GV |
5113 | { |
5114 | errno = EBADF; | |
5115 | return -1; | |
5116 | } | |
5117 | ||
7559f399 | 5118 | if (fd < MAXDESC && fd_info[fd].cp) |
480b0c5b GV |
5119 | { |
5120 | child_process * cp = fd_info[fd].cp; | |
5121 | ||
5122 | fd_info[fd].cp = NULL; | |
5123 | ||
5124 | if (CHILD_ACTIVE (cp)) | |
5125 | { | |
5126 | /* if last descriptor to active child_process then cleanup */ | |
5127 | int i; | |
5128 | for (i = 0; i < MAXDESC; i++) | |
5129 | { | |
5130 | if (i == fd) | |
5131 | continue; | |
5132 | if (fd_info[i].cp == cp) | |
5133 | break; | |
5134 | } | |
5135 | if (i == MAXDESC) | |
5136 | { | |
480b0c5b GV |
5137 | if (fd_info[fd].flags & FILE_SOCKET) |
5138 | { | |
f249a012 | 5139 | if (winsock_lib == NULL) abort (); |
480b0c5b GV |
5140 | |
5141 | pfn_shutdown (SOCK_HANDLE (fd), 2); | |
5142 | rc = pfn_closesocket (SOCK_HANDLE (fd)); | |
7d701334 | 5143 | |
f249a012 | 5144 | winsock_inuse--; /* count open sockets */ |
480b0c5b | 5145 | } |
480b0c5b GV |
5146 | delete_child (cp); |
5147 | } | |
5148 | } | |
5149 | } | |
5150 | ||
5151 | /* Note that sockets do not need special treatment here (at least on | |
e9e23e23 | 5152 | NT and Windows 95 using the standard tcp/ip stacks) - it appears that |
480b0c5b GV |
5153 | closesocket is equivalent to CloseHandle, which is to be expected |
5154 | because socket handles are fully fledged kernel handles. */ | |
5155 | rc = _close (fd); | |
5156 | ||
7559f399 | 5157 | if (rc == 0 && fd < MAXDESC) |
480b0c5b GV |
5158 | fd_info[fd].flags = 0; |
5159 | ||
5160 | return rc; | |
5161 | } | |
5162 | ||
5163 | int | |
5164 | sys_dup (int fd) | |
5165 | { | |
5166 | int new_fd; | |
5167 | ||
5168 | new_fd = _dup (fd); | |
7559f399 | 5169 | if (new_fd >= 0 && new_fd < MAXDESC) |
480b0c5b GV |
5170 | { |
5171 | /* duplicate our internal info as well */ | |
5172 | fd_info[new_fd] = fd_info[fd]; | |
5173 | } | |
5174 | return new_fd; | |
5175 | } | |
5176 | ||
480b0c5b GV |
5177 | int |
5178 | sys_dup2 (int src, int dst) | |
5179 | { | |
5180 | int rc; | |
5181 | ||
5182 | if (dst < 0 || dst >= MAXDESC) | |
5183 | { | |
5184 | errno = EBADF; | |
5185 | return -1; | |
5186 | } | |
5187 | ||
5188 | /* make sure we close the destination first if it's a pipe or socket */ | |
5189 | if (src != dst && fd_info[dst].flags != 0) | |
5190 | sys_close (dst); | |
177c0ea7 | 5191 | |
480b0c5b GV |
5192 | rc = _dup2 (src, dst); |
5193 | if (rc == 0) | |
5194 | { | |
5195 | /* duplicate our internal info as well */ | |
5196 | fd_info[dst] = fd_info[src]; | |
5197 | } | |
5198 | return rc; | |
5199 | } | |
5200 | ||
480b0c5b GV |
5201 | /* Unix pipe() has only one arg */ |
5202 | int | |
5203 | sys_pipe (int * phandles) | |
5204 | { | |
5205 | int rc; | |
5206 | unsigned flags; | |
480b0c5b | 5207 | |
76b3903d GV |
5208 | /* make pipe handles non-inheritable; when we spawn a child, we |
5209 | replace the relevant handle with an inheritable one. Also put | |
5210 | pipes into binary mode; we will do text mode translation ourselves | |
5211 | if required. */ | |
5212 | rc = _pipe (phandles, 0, _O_NOINHERIT | _O_BINARY); | |
480b0c5b GV |
5213 | |
5214 | if (rc == 0) | |
5215 | { | |
cb72110d JR |
5216 | /* Protect against overflow, since Windows can open more handles than |
5217 | our fd_info array has room for. */ | |
5218 | if (phandles[0] >= MAXDESC || phandles[1] >= MAXDESC) | |
5219 | { | |
5220 | _close (phandles[0]); | |
5221 | _close (phandles[1]); | |
5222 | rc = -1; | |
5223 | } | |
5224 | else | |
5225 | { | |
5226 | flags = FILE_PIPE | FILE_READ | FILE_BINARY; | |
5227 | fd_info[phandles[0]].flags = flags; | |
480b0c5b | 5228 | |
cb72110d JR |
5229 | flags = FILE_PIPE | FILE_WRITE | FILE_BINARY; |
5230 | fd_info[phandles[1]].flags = flags; | |
5231 | } | |
480b0c5b GV |
5232 | } |
5233 | ||
5234 | return rc; | |
5235 | } | |
5236 | ||
5237 | /* Function to do blocking read of one byte, needed to implement | |
5238 | select. It is only allowed on sockets and pipes. */ | |
5239 | int | |
5240 | _sys_read_ahead (int fd) | |
5241 | { | |
5242 | child_process * cp; | |
5243 | int rc; | |
5244 | ||
5245 | if (fd < 0 || fd >= MAXDESC) | |
5246 | return STATUS_READ_ERROR; | |
5247 | ||
5248 | cp = fd_info[fd].cp; | |
5249 | ||
5250 | if (cp == NULL || cp->fd != fd || cp->status != STATUS_READ_READY) | |
5251 | return STATUS_READ_ERROR; | |
5252 | ||
d888760c | 5253 | if ((fd_info[fd].flags & (FILE_PIPE | FILE_SERIAL | FILE_SOCKET)) == 0 |
480b0c5b GV |
5254 | || (fd_info[fd].flags & FILE_READ) == 0) |
5255 | { | |
d888760c | 5256 | DebPrint (("_sys_read_ahead: internal error: fd %d is not a pipe, serial port, or socket!\n", fd)); |
480b0c5b GV |
5257 | abort (); |
5258 | } | |
177c0ea7 | 5259 | |
480b0c5b | 5260 | cp->status = STATUS_READ_IN_PROGRESS; |
177c0ea7 | 5261 | |
480b0c5b | 5262 | if (fd_info[fd].flags & FILE_PIPE) |
f7554349 | 5263 | { |
f7554349 KH |
5264 | rc = _read (fd, &cp->chr, sizeof (char)); |
5265 | ||
5266 | /* Give subprocess time to buffer some more output for us before | |
e9e23e23 | 5267 | reporting that input is available; we need this because Windows 95 |
f7554349 KH |
5268 | connects DOS programs to pipes by making the pipe appear to be |
5269 | the normal console stdout - as a result most DOS programs will | |
d888760c | 5270 | write to stdout without buffering, ie. one character at a |
fbd6baed | 5271 | time. Even some W32 programs do this - "dir" in a command |
f7554349 KH |
5272 | shell on NT is very slow if we don't do this. */ |
5273 | if (rc > 0) | |
5274 | { | |
78806724 | 5275 | int wait = w32_pipe_read_delay; |
f7554349 KH |
5276 | |
5277 | if (wait > 0) | |
5278 | Sleep (wait); | |
5279 | else if (wait < 0) | |
5280 | while (++wait <= 0) | |
5281 | /* Yield remainder of our time slice, effectively giving a | |
5282 | temporary priority boost to the child process. */ | |
5283 | Sleep (0); | |
5284 | } | |
5285 | } | |
d888760c GM |
5286 | else if (fd_info[fd].flags & FILE_SERIAL) |
5287 | { | |
5288 | HANDLE hnd = fd_info[fd].hnd; | |
5289 | OVERLAPPED *ovl = &fd_info[fd].cp->ovl_read; | |
5290 | COMMTIMEOUTS ct; | |
5291 | ||
5292 | /* Configure timeouts for blocking read. */ | |
5293 | if (!GetCommTimeouts (hnd, &ct)) | |
5294 | return STATUS_READ_ERROR; | |
5295 | ct.ReadIntervalTimeout = 0; | |
5296 | ct.ReadTotalTimeoutMultiplier = 0; | |
5297 | ct.ReadTotalTimeoutConstant = 0; | |
5298 | if (!SetCommTimeouts (hnd, &ct)) | |
5299 | return STATUS_READ_ERROR; | |
5300 | ||
5301 | if (!ReadFile (hnd, &cp->chr, sizeof (char), (DWORD*) &rc, ovl)) | |
5302 | { | |
5303 | if (GetLastError () != ERROR_IO_PENDING) | |
5304 | return STATUS_READ_ERROR; | |
5305 | if (!GetOverlappedResult (hnd, ovl, (DWORD*) &rc, TRUE)) | |
5306 | return STATUS_READ_ERROR; | |
5307 | } | |
5308 | } | |
480b0c5b | 5309 | else if (fd_info[fd].flags & FILE_SOCKET) |
ecd270eb JR |
5310 | { |
5311 | unsigned long nblock = 0; | |
5312 | /* We always want this to block, so temporarily disable NDELAY. */ | |
5313 | if (fd_info[fd].flags & FILE_NDELAY) | |
5314 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONBIO, &nblock); | |
5315 | ||
5316 | rc = pfn_recv (SOCK_HANDLE (fd), &cp->chr, sizeof (char), 0); | |
5317 | ||
5318 | if (fd_info[fd].flags & FILE_NDELAY) | |
5319 | { | |
5320 | nblock = 1; | |
5321 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONBIO, &nblock); | |
5322 | } | |
5323 | } | |
177c0ea7 | 5324 | |
480b0c5b GV |
5325 | if (rc == sizeof (char)) |
5326 | cp->status = STATUS_READ_SUCCEEDED; | |
5327 | else | |
5328 | cp->status = STATUS_READ_FAILED; | |
5329 | ||
5330 | return cp->status; | |
5331 | } | |
5332 | ||
9bfb11f9 KS |
5333 | int |
5334 | _sys_wait_accept (int fd) | |
64570b36 KS |
5335 | { |
5336 | HANDLE hEv; | |
5337 | child_process * cp; | |
5338 | int rc; | |
5339 | ||
5340 | if (fd < 0 || fd >= MAXDESC) | |
5341 | return STATUS_READ_ERROR; | |
5342 | ||
5343 | cp = fd_info[fd].cp; | |
5344 | ||
5345 | if (cp == NULL || cp->fd != fd || cp->status != STATUS_READ_READY) | |
5346 | return STATUS_READ_ERROR; | |
5347 | ||
5348 | cp->status = STATUS_READ_FAILED; | |
5349 | ||
5350 | hEv = pfn_WSACreateEvent (); | |
5351 | rc = pfn_WSAEventSelect (SOCK_HANDLE (fd), hEv, FD_ACCEPT); | |
5352 | if (rc != SOCKET_ERROR) | |
5353 | { | |
5354 | rc = WaitForSingleObject (hEv, INFINITE); | |
5355 | pfn_WSAEventSelect (SOCK_HANDLE (fd), NULL, 0); | |
64570b36 KS |
5356 | if (rc == WAIT_OBJECT_0) |
5357 | cp->status = STATUS_READ_SUCCEEDED; | |
5358 | } | |
7046f191 | 5359 | pfn_WSACloseEvent (hEv); |
64570b36 KS |
5360 | |
5361 | return cp->status; | |
5362 | } | |
5363 | ||
480b0c5b GV |
5364 | int |
5365 | sys_read (int fd, char * buffer, unsigned int count) | |
5366 | { | |
5367 | int nchars; | |
480b0c5b GV |
5368 | int to_read; |
5369 | DWORD waiting; | |
76b3903d | 5370 | char * orig_buffer = buffer; |
480b0c5b | 5371 | |
7559f399 | 5372 | if (fd < 0) |
480b0c5b GV |
5373 | { |
5374 | errno = EBADF; | |
5375 | return -1; | |
5376 | } | |
5377 | ||
d888760c | 5378 | if (fd < MAXDESC && fd_info[fd].flags & (FILE_PIPE | FILE_SOCKET | FILE_SERIAL)) |
480b0c5b GV |
5379 | { |
5380 | child_process *cp = fd_info[fd].cp; | |
5381 | ||
5382 | if ((fd_info[fd].flags & FILE_READ) == 0) | |
5383 | { | |
5384 | errno = EBADF; | |
5385 | return -1; | |
5386 | } | |
5387 | ||
76b3903d GV |
5388 | nchars = 0; |
5389 | ||
5390 | /* re-read CR carried over from last read */ | |
5391 | if (fd_info[fd].flags & FILE_LAST_CR) | |
5392 | { | |
5393 | if (fd_info[fd].flags & FILE_BINARY) abort (); | |
5394 | *buffer++ = 0x0d; | |
5395 | count--; | |
5396 | nchars++; | |
f52eb3ef | 5397 | fd_info[fd].flags &= ~FILE_LAST_CR; |
76b3903d GV |
5398 | } |
5399 | ||
480b0c5b GV |
5400 | /* presence of a child_process structure means we are operating in |
5401 | non-blocking mode - otherwise we just call _read directly. | |
5402 | Note that the child_process structure might be missing because | |
5403 | reap_subprocess has been called; in this case the pipe is | |
5404 | already broken, so calling _read on it is okay. */ | |
5405 | if (cp) | |
5406 | { | |
5407 | int current_status = cp->status; | |
5408 | ||
5409 | switch (current_status) | |
5410 | { | |
5411 | case STATUS_READ_FAILED: | |
5412 | case STATUS_READ_ERROR: | |
f52eb3ef GV |
5413 | /* report normal EOF if nothing in buffer */ |
5414 | if (nchars <= 0) | |
5415 | fd_info[fd].flags |= FILE_AT_EOF; | |
5416 | return nchars; | |
480b0c5b GV |
5417 | |
5418 | case STATUS_READ_READY: | |
5419 | case STATUS_READ_IN_PROGRESS: | |
5420 | DebPrint (("sys_read called when read is in progress\n")); | |
5421 | errno = EWOULDBLOCK; | |
5422 | return -1; | |
5423 | ||
5424 | case STATUS_READ_SUCCEEDED: | |
5425 | /* consume read-ahead char */ | |
5426 | *buffer++ = cp->chr; | |
5427 | count--; | |
76b3903d | 5428 | nchars++; |
480b0c5b GV |
5429 | cp->status = STATUS_READ_ACKNOWLEDGED; |
5430 | ResetEvent (cp->char_avail); | |
5431 | ||
5432 | case STATUS_READ_ACKNOWLEDGED: | |
5433 | break; | |
5434 | ||
5435 | default: | |
5436 | DebPrint (("sys_read: bad status %d\n", current_status)); | |
5437 | errno = EBADF; | |
5438 | return -1; | |
5439 | } | |
5440 | ||
5441 | if (fd_info[fd].flags & FILE_PIPE) | |
5442 | { | |
5443 | PeekNamedPipe ((HANDLE) _get_osfhandle (fd), NULL, 0, NULL, &waiting, NULL); | |
5444 | to_read = min (waiting, (DWORD) count); | |
f52eb3ef GV |
5445 | |
5446 | if (to_read > 0) | |
5447 | nchars += _read (fd, buffer, to_read); | |
480b0c5b | 5448 | } |
d888760c GM |
5449 | else if (fd_info[fd].flags & FILE_SERIAL) |
5450 | { | |
5451 | HANDLE hnd = fd_info[fd].hnd; | |
5452 | OVERLAPPED *ovl = &fd_info[fd].cp->ovl_read; | |
d888760c GM |
5453 | int rc = 0; |
5454 | COMMTIMEOUTS ct; | |
5455 | ||
5456 | if (count > 0) | |
5457 | { | |
5458 | /* Configure timeouts for non-blocking read. */ | |
5459 | if (!GetCommTimeouts (hnd, &ct)) | |
5460 | { | |
5461 | errno = EIO; | |
5462 | return -1; | |
5463 | } | |
5464 | ct.ReadIntervalTimeout = MAXDWORD; | |
5465 | ct.ReadTotalTimeoutMultiplier = 0; | |
5466 | ct.ReadTotalTimeoutConstant = 0; | |
5467 | if (!SetCommTimeouts (hnd, &ct)) | |
5468 | { | |
5469 | errno = EIO; | |
5470 | return -1; | |
5471 | } | |
5472 | ||
5473 | if (!ResetEvent (ovl->hEvent)) | |
5474 | { | |
5475 | errno = EIO; | |
5476 | return -1; | |
5477 | } | |
5478 | if (!ReadFile (hnd, buffer, count, (DWORD*) &rc, ovl)) | |
5479 | { | |
5480 | if (GetLastError () != ERROR_IO_PENDING) | |
5481 | { | |
5482 | errno = EIO; | |
5483 | return -1; | |
5484 | } | |
5485 | if (!GetOverlappedResult (hnd, ovl, (DWORD*) &rc, TRUE)) | |
5486 | { | |
5487 | errno = EIO; | |
5488 | return -1; | |
5489 | } | |
5490 | } | |
5491 | nchars += rc; | |
5492 | } | |
5493 | } | |
480b0c5b GV |
5494 | else /* FILE_SOCKET */ |
5495 | { | |
f249a012 | 5496 | if (winsock_lib == NULL) abort (); |
480b0c5b GV |
5497 | |
5498 | /* do the equivalent of a non-blocking read */ | |
5499 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONREAD, &waiting); | |
76b3903d | 5500 | if (waiting == 0 && nchars == 0) |
480b0c5b GV |
5501 | { |
5502 | h_errno = errno = EWOULDBLOCK; | |
5503 | return -1; | |
5504 | } | |
5505 | ||
480b0c5b GV |
5506 | if (waiting) |
5507 | { | |
5508 | /* always use binary mode for sockets */ | |
76b3903d GV |
5509 | int res = pfn_recv (SOCK_HANDLE (fd), buffer, count, 0); |
5510 | if (res == SOCKET_ERROR) | |
480b0c5b | 5511 | { |
ed3751c8 JB |
5512 | DebPrint (("sys_read.recv failed with error %d on socket %ld\n", |
5513 | pfn_WSAGetLastError (), SOCK_HANDLE (fd))); | |
76b3903d GV |
5514 | set_errno (); |
5515 | return -1; | |
480b0c5b | 5516 | } |
76b3903d | 5517 | nchars += res; |
480b0c5b GV |
5518 | } |
5519 | } | |
480b0c5b GV |
5520 | } |
5521 | else | |
f52eb3ef GV |
5522 | { |
5523 | int nread = _read (fd, buffer, count); | |
5524 | if (nread >= 0) | |
5525 | nchars += nread; | |
5526 | else if (nchars == 0) | |
5527 | nchars = nread; | |
5528 | } | |
76b3903d | 5529 | |
f52eb3ef GV |
5530 | if (nchars <= 0) |
5531 | fd_info[fd].flags |= FILE_AT_EOF; | |
76b3903d | 5532 | /* Perform text mode translation if required. */ |
f52eb3ef | 5533 | else if ((fd_info[fd].flags & FILE_BINARY) == 0) |
76b3903d GV |
5534 | { |
5535 | nchars = crlf_to_lf (nchars, orig_buffer); | |
5536 | /* If buffer contains only CR, return that. To be absolutely | |
5537 | sure we should attempt to read the next char, but in | |
5538 | practice a CR to be followed by LF would not appear by | |
5539 | itself in the buffer. */ | |
5540 | if (nchars > 1 && orig_buffer[nchars - 1] == 0x0d) | |
5541 | { | |
5542 | fd_info[fd].flags |= FILE_LAST_CR; | |
5543 | nchars--; | |
5544 | } | |
76b3903d | 5545 | } |
480b0c5b GV |
5546 | } |
5547 | else | |
5548 | nchars = _read (fd, buffer, count); | |
5549 | ||
76b3903d | 5550 | return nchars; |
480b0c5b GV |
5551 | } |
5552 | ||
d888760c GM |
5553 | /* From w32xfns.c */ |
5554 | extern HANDLE interrupt_handle; | |
5555 | ||
480b0c5b GV |
5556 | /* For now, don't bother with a non-blocking mode */ |
5557 | int | |
5558 | sys_write (int fd, const void * buffer, unsigned int count) | |
5559 | { | |
5560 | int nchars; | |
5561 | ||
7559f399 | 5562 | if (fd < 0) |
480b0c5b GV |
5563 | { |
5564 | errno = EBADF; | |
5565 | return -1; | |
5566 | } | |
5567 | ||
d888760c | 5568 | if (fd < MAXDESC && fd_info[fd].flags & (FILE_PIPE | FILE_SOCKET | FILE_SERIAL)) |
76b3903d GV |
5569 | { |
5570 | if ((fd_info[fd].flags & FILE_WRITE) == 0) | |
5571 | { | |
5572 | errno = EBADF; | |
5573 | return -1; | |
5574 | } | |
5575 | ||
5576 | /* Perform text mode translation if required. */ | |
5577 | if ((fd_info[fd].flags & FILE_BINARY) == 0) | |
5578 | { | |
5579 | char * tmpbuf = alloca (count * 2); | |
5580 | unsigned char * src = (void *)buffer; | |
5581 | unsigned char * dst = tmpbuf; | |
5582 | int nbytes = count; | |
5583 | ||
5584 | while (1) | |
5585 | { | |
5586 | unsigned char *next; | |
5587 | /* copy next line or remaining bytes */ | |
5588 | next = _memccpy (dst, src, '\n', nbytes); | |
5589 | if (next) | |
5590 | { | |
5591 | /* copied one line ending with '\n' */ | |
5592 | int copied = next - dst; | |
5593 | nbytes -= copied; | |
5594 | src += copied; | |
5595 | /* insert '\r' before '\n' */ | |
5596 | next[-1] = '\r'; | |
5597 | next[0] = '\n'; | |
5598 | dst = next + 1; | |
5599 | count++; | |
177c0ea7 | 5600 | } |
76b3903d GV |
5601 | else |
5602 | /* copied remaining partial line -> now finished */ | |
5603 | break; | |
5604 | } | |
5605 | buffer = tmpbuf; | |
5606 | } | |
5607 | } | |
5608 | ||
d888760c GM |
5609 | if (fd < MAXDESC && fd_info[fd].flags & FILE_SERIAL) |
5610 | { | |
5611 | HANDLE hnd = (HANDLE) _get_osfhandle (fd); | |
5612 | OVERLAPPED *ovl = &fd_info[fd].cp->ovl_write; | |
5613 | HANDLE wait_hnd[2] = { interrupt_handle, ovl->hEvent }; | |
5614 | DWORD active = 0; | |
5615 | ||
5616 | if (!WriteFile (hnd, buffer, count, (DWORD*) &nchars, ovl)) | |
5617 | { | |
5618 | if (GetLastError () != ERROR_IO_PENDING) | |
5619 | { | |
5620 | errno = EIO; | |
5621 | return -1; | |
5622 | } | |
5623 | if (detect_input_pending ()) | |
5624 | active = MsgWaitForMultipleObjects (2, wait_hnd, FALSE, INFINITE, | |
5625 | QS_ALLINPUT); | |
5626 | else | |
5627 | active = WaitForMultipleObjects (2, wait_hnd, FALSE, INFINITE); | |
5628 | if (active == WAIT_OBJECT_0) | |
5629 | { /* User pressed C-g, cancel write, then leave. Don't bother | |
5630 | cleaning up as we may only get stuck in buggy drivers. */ | |
5631 | PurgeComm (hnd, PURGE_TXABORT | PURGE_TXCLEAR); | |
5632 | CancelIo (hnd); | |
5633 | errno = EIO; | |
5634 | return -1; | |
5635 | } | |
5636 | if (active == WAIT_OBJECT_0 + 1 | |
5637 | && !GetOverlappedResult (hnd, ovl, (DWORD*) &nchars, TRUE)) | |
5638 | { | |
5639 | errno = EIO; | |
5640 | return -1; | |
5641 | } | |
5642 | } | |
5643 | } | |
7d701334 | 5644 | else if (fd < MAXDESC && fd_info[fd].flags & FILE_SOCKET) |
480b0c5b | 5645 | { |
30a32e0e | 5646 | unsigned long nblock = 0; |
f249a012 | 5647 | if (winsock_lib == NULL) abort (); |
30a32e0e JR |
5648 | |
5649 | /* TODO: implement select() properly so non-blocking I/O works. */ | |
5650 | /* For now, make sure the write blocks. */ | |
5651 | if (fd_info[fd].flags & FILE_NDELAY) | |
5652 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONBIO, &nblock); | |
5653 | ||
480b0c5b | 5654 | nchars = pfn_send (SOCK_HANDLE (fd), buffer, count, 0); |
30a32e0e JR |
5655 | |
5656 | /* Set the socket back to non-blocking if it was before, | |
5657 | for other operations that support it. */ | |
5658 | if (fd_info[fd].flags & FILE_NDELAY) | |
5659 | { | |
5660 | nblock = 1; | |
5661 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONBIO, &nblock); | |
5662 | } | |
5663 | ||
480b0c5b GV |
5664 | if (nchars == SOCKET_ERROR) |
5665 | { | |
ed3751c8 JB |
5666 | DebPrint (("sys_write.send failed with error %d on socket %ld\n", |
5667 | pfn_WSAGetLastError (), SOCK_HANDLE (fd))); | |
480b0c5b GV |
5668 | set_errno (); |
5669 | } | |
5670 | } | |
5671 | else | |
6e83d800 EZ |
5672 | { |
5673 | /* Some networked filesystems don't like too large writes, so | |
5674 | break them into smaller chunks. See the Comments section of | |
5675 | the MSDN documentation of WriteFile for details behind the | |
5676 | choice of the value of CHUNK below. See also the thread | |
5677 | http://thread.gmane.org/gmane.comp.version-control.git/145294 | |
5678 | in the git mailing list. */ | |
5679 | const unsigned char *p = buffer; | |
5680 | const unsigned chunk = 30 * 1024 * 1024; | |
5681 | ||
5682 | nchars = 0; | |
5683 | while (count > 0) | |
5684 | { | |
5685 | unsigned this_chunk = count < chunk ? count : chunk; | |
5686 | int n = _write (fd, p, this_chunk); | |
5687 | ||
5688 | nchars += n; | |
5689 | if (n < 0) | |
5690 | { | |
5691 | nchars = n; | |
5692 | break; | |
5693 | } | |
5694 | else if (n < this_chunk) | |
5695 | break; | |
5696 | count -= n; | |
5697 | p += n; | |
5698 | } | |
5699 | } | |
480b0c5b GV |
5700 | |
5701 | return nchars; | |
5702 | } | |
5703 | ||
97a93095 EZ |
5704 | /* The Windows CRT functions are "optimized for speed", so they don't |
5705 | check for timezone and DST changes if they were last called less | |
5706 | than 1 minute ago (see http://support.microsoft.com/kb/821231). So | |
5707 | all Emacs features that repeatedly call time functions (e.g., | |
5708 | display-time) are in real danger of missing timezone and DST | |
5709 | changes. Calling tzset before each localtime call fixes that. */ | |
5710 | struct tm * | |
5711 | sys_localtime (const time_t *t) | |
5712 | { | |
5713 | tzset (); | |
5714 | return localtime (t); | |
5715 | } | |
5716 | ||
0898ca10 JB |
5717 | |
5718 | \f | |
5719 | /* Delayed loading of libraries. */ | |
5720 | ||
5721 | Lisp_Object Vlibrary_cache; | |
5722 | ||
5723 | /* The argument LIBRARIES is an alist that associates a symbol | |
5724 | LIBRARY_ID, identifying an external DLL library known to Emacs, to | |
5725 | a list of filenames under which the library is usually found. In | |
5726 | most cases, the argument passed as LIBRARIES is the variable | |
5727 | `dynamic-library-alist', which is initialized to a list of common | |
5728 | library names. If the function loads the library successfully, it | |
5729 | returns the handle of the DLL, and records the filename in the | |
5730 | property :loaded-from of LIBRARY_ID; it returns NULL if the library | |
5731 | could not be found, or when it was already loaded (because the | |
5732 | handle is not recorded anywhere, and so is lost after use). It | |
5733 | would be trivial to save the handle too in :loaded-from, but | |
5734 | currently there's no use case for it. */ | |
5735 | HMODULE | |
5736 | w32_delayed_load (Lisp_Object libraries, Lisp_Object library_id) | |
5737 | { | |
5738 | HMODULE library_dll = NULL; | |
5739 | ||
5740 | CHECK_SYMBOL (library_id); | |
5741 | ||
5742 | if (CONSP (libraries) && NILP (Fassq (library_id, Vlibrary_cache))) | |
5743 | { | |
5744 | Lisp_Object found = Qnil; | |
5745 | Lisp_Object dlls = Fassq (library_id, libraries); | |
5746 | ||
5747 | if (CONSP (dlls)) | |
5748 | for (dlls = XCDR (dlls); CONSP (dlls); dlls = XCDR (dlls)) | |
5749 | { | |
5750 | CHECK_STRING_CAR (dlls); | |
5751 | if (library_dll = LoadLibrary (SDATA (XCAR (dlls)))) | |
5752 | { | |
5753 | found = XCAR (dlls); | |
5754 | break; | |
5755 | } | |
5756 | } | |
5757 | ||
5758 | Fput (library_id, QCloaded_from, found); | |
5759 | } | |
5760 | ||
5761 | return library_dll; | |
5762 | } | |
5763 | ||
5764 | \f | |
f52eb3ef | 5765 | static void |
b56ceb92 | 5766 | check_windows_init_file (void) |
f52eb3ef | 5767 | { |
f52eb3ef GV |
5768 | /* A common indication that Emacs is not installed properly is when |
5769 | it cannot find the Windows installation file. If this file does | |
5770 | not exist in the expected place, tell the user. */ | |
5771 | ||
177c0ea7 | 5772 | if (!noninteractive && !inhibit_window_system) |
d54abccd | 5773 | { |
a0b9c838 | 5774 | Lisp_Object objs[2]; |
96ef7d42 | 5775 | Lisp_Object full_load_path; |
d54abccd GV |
5776 | Lisp_Object init_file; |
5777 | int fd; | |
f52eb3ef | 5778 | |
a0b9c838 GV |
5779 | objs[0] = Vload_path; |
5780 | objs[1] = decode_env_path (0, (getenv ("EMACSLOADPATH"))); | |
5781 | full_load_path = Fappend (2, objs); | |
d54abccd | 5782 | init_file = build_string ("term/w32-win"); |
c50a2aa6 | 5783 | fd = openp (full_load_path, init_file, Fget_load_suffixes (), NULL, Qnil); |
177c0ea7 | 5784 | if (fd < 0) |
d54abccd | 5785 | { |
96ef7d42 | 5786 | Lisp_Object load_path_print = Fprin1_to_string (full_load_path, Qnil); |
d5db4077 KR |
5787 | char *init_file_name = SDATA (init_file); |
5788 | char *load_path = SDATA (load_path_print); | |
acc23b87 KS |
5789 | char *buffer = alloca (1024 |
5790 | + strlen (init_file_name) | |
5791 | + strlen (load_path)); | |
d54abccd | 5792 | |
177c0ea7 | 5793 | sprintf (buffer, |
d54abccd GV |
5794 | "The Emacs Windows initialization file \"%s.el\" " |
5795 | "could not be found in your Emacs installation. " | |
5796 | "Emacs checked the following directories for this file:\n" | |
5797 | "\n%s\n\n" | |
5798 | "When Emacs cannot find this file, it usually means that it " | |
5799 | "was not installed properly, or its distribution file was " | |
5800 | "not unpacked properly.\nSee the README.W32 file in the " | |
5801 | "top-level Emacs directory for more information.", | |
5802 | init_file_name, load_path); | |
5803 | MessageBox (NULL, | |
5804 | buffer, | |
5805 | "Emacs Abort Dialog", | |
5806 | MB_OK | MB_ICONEXCLAMATION | MB_TASKMODAL); | |
f52eb3ef GV |
5807 | /* Use the low-level Emacs abort. */ |
5808 | #undef abort | |
d54abccd GV |
5809 | abort (); |
5810 | } | |
5811 | else | |
5812 | { | |
a302c7ae | 5813 | _close (fd); |
d54abccd | 5814 | } |
f52eb3ef | 5815 | } |
f52eb3ef | 5816 | } |
480b0c5b GV |
5817 | |
5818 | void | |
b56ceb92 | 5819 | term_ntproc (void) |
480b0c5b | 5820 | { |
480b0c5b GV |
5821 | /* shutdown the socket interface if necessary */ |
5822 | term_winsock (); | |
52c7f9ee JR |
5823 | |
5824 | term_w32select (); | |
480b0c5b GV |
5825 | } |
5826 | ||
5827 | void | |
b56ceb92 | 5828 | init_ntproc (void) |
480b0c5b | 5829 | { |
f249a012 RS |
5830 | /* Initialise the socket interface now if available and requested by |
5831 | the user by defining PRELOAD_WINSOCK; otherwise loading will be | |
fbd6baed | 5832 | delayed until open-network-stream is called (w32-has-winsock can |
f249a012 RS |
5833 | also be used to dynamically load or reload winsock). |
5834 | ||
5835 | Conveniently, init_environment is called before us, so | |
5836 | PRELOAD_WINSOCK can be set in the registry. */ | |
5837 | ||
5838 | /* Always initialize this correctly. */ | |
5839 | winsock_lib = NULL; | |
5840 | ||
5841 | if (getenv ("PRELOAD_WINSOCK") != NULL) | |
5842 | init_winsock (TRUE); | |
480b0c5b GV |
5843 | |
5844 | /* Initial preparation for subprocess support: replace our standard | |
5845 | handles with non-inheritable versions. */ | |
5846 | { | |
5847 | HANDLE parent; | |
5848 | HANDLE stdin_save = INVALID_HANDLE_VALUE; | |
5849 | HANDLE stdout_save = INVALID_HANDLE_VALUE; | |
5850 | HANDLE stderr_save = INVALID_HANDLE_VALUE; | |
5851 | ||
5852 | parent = GetCurrentProcess (); | |
5853 | ||
5854 | /* ignore errors when duplicating and closing; typically the | |
5855 | handles will be invalid when running as a gui program. */ | |
177c0ea7 JB |
5856 | DuplicateHandle (parent, |
5857 | GetStdHandle (STD_INPUT_HANDLE), | |
480b0c5b | 5858 | parent, |
177c0ea7 JB |
5859 | &stdin_save, |
5860 | 0, | |
5861 | FALSE, | |
480b0c5b | 5862 | DUPLICATE_SAME_ACCESS); |
177c0ea7 | 5863 | |
480b0c5b GV |
5864 | DuplicateHandle (parent, |
5865 | GetStdHandle (STD_OUTPUT_HANDLE), | |
5866 | parent, | |
5867 | &stdout_save, | |
5868 | 0, | |
5869 | FALSE, | |
5870 | DUPLICATE_SAME_ACCESS); | |
177c0ea7 | 5871 | |
480b0c5b GV |
5872 | DuplicateHandle (parent, |
5873 | GetStdHandle (STD_ERROR_HANDLE), | |
5874 | parent, | |
5875 | &stderr_save, | |
5876 | 0, | |
5877 | FALSE, | |
5878 | DUPLICATE_SAME_ACCESS); | |
177c0ea7 | 5879 | |
480b0c5b GV |
5880 | fclose (stdin); |
5881 | fclose (stdout); | |
5882 | fclose (stderr); | |
5883 | ||
5884 | if (stdin_save != INVALID_HANDLE_VALUE) | |
5885 | _open_osfhandle ((long) stdin_save, O_TEXT); | |
5886 | else | |
76b3903d GV |
5887 | _open ("nul", O_TEXT | O_NOINHERIT | O_RDONLY); |
5888 | _fdopen (0, "r"); | |
480b0c5b GV |
5889 | |
5890 | if (stdout_save != INVALID_HANDLE_VALUE) | |
5891 | _open_osfhandle ((long) stdout_save, O_TEXT); | |
5892 | else | |
76b3903d GV |
5893 | _open ("nul", O_TEXT | O_NOINHERIT | O_WRONLY); |
5894 | _fdopen (1, "w"); | |
480b0c5b GV |
5895 | |
5896 | if (stderr_save != INVALID_HANDLE_VALUE) | |
5897 | _open_osfhandle ((long) stderr_save, O_TEXT); | |
5898 | else | |
76b3903d GV |
5899 | _open ("nul", O_TEXT | O_NOINHERIT | O_WRONLY); |
5900 | _fdopen (2, "w"); | |
480b0c5b GV |
5901 | } |
5902 | ||
5903 | /* unfortunately, atexit depends on implementation of malloc */ | |
5904 | /* atexit (term_ntproc); */ | |
5905 | signal (SIGABRT, term_ntproc); | |
76b3903d GV |
5906 | |
5907 | /* determine which drives are fixed, for GetCachedVolumeInformation */ | |
5908 | { | |
5909 | /* GetDriveType must have trailing backslash. */ | |
5910 | char drive[] = "A:\\"; | |
5911 | ||
5912 | /* Loop over all possible drive letters */ | |
5913 | while (*drive <= 'Z') | |
5914 | { | |
5915 | /* Record if this drive letter refers to a fixed drive. */ | |
177c0ea7 | 5916 | fixed_drives[DRIVE_INDEX (*drive)] = |
76b3903d GV |
5917 | (GetDriveType (drive) == DRIVE_FIXED); |
5918 | ||
5919 | (*drive)++; | |
5920 | } | |
a302c7ae AI |
5921 | |
5922 | /* Reset the volume info cache. */ | |
5923 | volume_cache = NULL; | |
76b3903d | 5924 | } |
177c0ea7 | 5925 | |
d54abccd GV |
5926 | /* Check to see if Emacs has been installed correctly. */ |
5927 | check_windows_init_file (); | |
480b0c5b GV |
5928 | } |
5929 | ||
a8c3a596 JR |
5930 | /* |
5931 | shutdown_handler ensures that buffers' autosave files are | |
5932 | up to date when the user logs off, or the system shuts down. | |
5933 | */ | |
bedf4aab | 5934 | static BOOL WINAPI |
ed3751c8 | 5935 | shutdown_handler (DWORD type) |
a8c3a596 JR |
5936 | { |
5937 | /* Ctrl-C and Ctrl-Break are already suppressed, so don't handle them. */ | |
5938 | if (type == CTRL_CLOSE_EVENT /* User closes console window. */ | |
5939 | || type == CTRL_LOGOFF_EVENT /* User logs off. */ | |
5940 | || type == CTRL_SHUTDOWN_EVENT) /* User shutsdown. */ | |
5941 | { | |
5942 | /* Shut down cleanly, making sure autosave files are up to date. */ | |
5943 | shut_down_emacs (0, 0, Qnil); | |
5944 | } | |
5945 | ||
7046f191 | 5946 | /* Allow other handlers to handle this signal. */ |
a8c3a596 JR |
5947 | return FALSE; |
5948 | } | |
5949 | ||
9785d95b BK |
5950 | /* |
5951 | globals_of_w32 is used to initialize those global variables that | |
5952 | must always be initialized on startup even when the global variable | |
5953 | initialized is non zero (see the function main in emacs.c). | |
5954 | */ | |
9bfb11f9 | 5955 | void |
b56ceb92 | 5956 | globals_of_w32 (void) |
9785d95b | 5957 | { |
74258518 JR |
5958 | HMODULE kernel32 = GetModuleHandle ("kernel32.dll"); |
5959 | ||
5960 | get_process_times_fn = (GetProcessTimes_Proc) | |
5961 | GetProcAddress (kernel32, "GetProcessTimes"); | |
5962 | ||
0898ca10 JB |
5963 | QCloaded_from = intern_c_string (":loaded-from"); |
5964 | staticpro (&QCloaded_from); | |
5965 | ||
5966 | Vlibrary_cache = Qnil; | |
5967 | staticpro (&Vlibrary_cache); | |
5968 | ||
9785d95b BK |
5969 | g_b_init_is_windows_9x = 0; |
5970 | g_b_init_open_process_token = 0; | |
5971 | g_b_init_get_token_information = 0; | |
5972 | g_b_init_lookup_account_sid = 0; | |
9d95a291 EZ |
5973 | g_b_init_get_sid_sub_authority = 0; |
5974 | g_b_init_get_sid_sub_authority_count = 0; | |
8aaaec6b EZ |
5975 | g_b_init_get_file_security = 0; |
5976 | g_b_init_get_security_descriptor_owner = 0; | |
5977 | g_b_init_get_security_descriptor_group = 0; | |
5978 | g_b_init_is_valid_sid = 0; | |
7c80d5ec EZ |
5979 | g_b_init_create_toolhelp32_snapshot = 0; |
5980 | g_b_init_process32_first = 0; | |
5981 | g_b_init_process32_next = 0; | |
5982 | g_b_init_open_thread_token = 0; | |
5983 | g_b_init_impersonate_self = 0; | |
5984 | g_b_init_revert_to_self = 0; | |
5985 | g_b_init_get_process_memory_info = 0; | |
5986 | g_b_init_get_process_working_set_size = 0; | |
5987 | g_b_init_global_memory_status = 0; | |
5988 | g_b_init_global_memory_status_ex = 0; | |
f8b35b24 EZ |
5989 | g_b_init_equal_sid = 0; |
5990 | g_b_init_copy_sid = 0; | |
5991 | g_b_init_get_length_sid = 0; | |
ad9e2d54 EZ |
5992 | g_b_init_get_native_system_info = 0; |
5993 | g_b_init_get_system_times = 0; | |
5994 | num_of_processors = 0; | |
a8c3a596 JR |
5995 | /* The following sets a handler for shutdown notifications for |
5996 | console apps. This actually applies to Emacs in both console and | |
5997 | GUI modes, since we had to fool windows into thinking emacs is a | |
5998 | console application to get console mode to work. */ | |
ed3751c8 | 5999 | SetConsoleCtrlHandler (shutdown_handler, TRUE); |
8aaaec6b EZ |
6000 | |
6001 | /* "None" is the default group name on standalone workstations. */ | |
6002 | strcpy (dflt_group_name, "None"); | |
9785d95b BK |
6003 | } |
6004 | ||
d888760c | 6005 | /* For make-serial-process */ |
b56ceb92 JB |
6006 | int |
6007 | serial_open (char *port) | |
d888760c GM |
6008 | { |
6009 | HANDLE hnd; | |
6010 | child_process *cp; | |
6011 | int fd = -1; | |
6012 | ||
6013 | hnd = CreateFile (port, GENERIC_READ | GENERIC_WRITE, 0, 0, | |
6014 | OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0); | |
6015 | if (hnd == INVALID_HANDLE_VALUE) | |
6016 | error ("Could not open %s", port); | |
6017 | fd = (int) _open_osfhandle ((int) hnd, 0); | |
6018 | if (fd == -1) | |
6019 | error ("Could not open %s", port); | |
6020 | ||
6021 | cp = new_child (); | |
6022 | if (!cp) | |
6023 | error ("Could not create child process"); | |
6024 | cp->fd = fd; | |
6025 | cp->status = STATUS_READ_ACKNOWLEDGED; | |
6026 | fd_info[ fd ].hnd = hnd; | |
6027 | fd_info[ fd ].flags |= | |
6028 | FILE_READ | FILE_WRITE | FILE_BINARY | FILE_SERIAL; | |
6029 | if (fd_info[ fd ].cp != NULL) | |
6030 | { | |
6031 | error ("fd_info[fd = %d] is already in use", fd); | |
6032 | } | |
6033 | fd_info[ fd ].cp = cp; | |
6034 | cp->ovl_read.hEvent = CreateEvent (NULL, TRUE, FALSE, NULL); | |
6035 | if (cp->ovl_read.hEvent == NULL) | |
6036 | error ("Could not create read event"); | |
6037 | cp->ovl_write.hEvent = CreateEvent (NULL, TRUE, FALSE, NULL); | |
6038 | if (cp->ovl_write.hEvent == NULL) | |
6039 | error ("Could not create write event"); | |
6040 | ||
6041 | return fd; | |
6042 | } | |
6043 | ||
6044 | /* For serial-process-configure */ | |
6045 | void | |
9d4f32e8 | 6046 | serial_configure (struct Lisp_Process *p, Lisp_Object contact) |
d888760c GM |
6047 | { |
6048 | Lisp_Object childp2 = Qnil; | |
6049 | Lisp_Object tem = Qnil; | |
6050 | HANDLE hnd; | |
6051 | DCB dcb; | |
6052 | COMMTIMEOUTS ct; | |
6053 | char summary[4] = "???"; /* This usually becomes "8N1". */ | |
6054 | ||
6055 | if ((fd_info[ p->outfd ].flags & FILE_SERIAL) == 0) | |
6056 | error ("Not a serial process"); | |
6057 | hnd = fd_info[ p->outfd ].hnd; | |
6058 | ||
6059 | childp2 = Fcopy_sequence (p->childp); | |
6060 | ||
6061 | /* Initialize timeouts for blocking read and blocking write. */ | |
6062 | if (!GetCommTimeouts (hnd, &ct)) | |
6063 | error ("GetCommTimeouts() failed"); | |
6064 | ct.ReadIntervalTimeout = 0; | |
6065 | ct.ReadTotalTimeoutMultiplier = 0; | |
6066 | ct.ReadTotalTimeoutConstant = 0; | |
6067 | ct.WriteTotalTimeoutMultiplier = 0; | |
6068 | ct.WriteTotalTimeoutConstant = 0; | |
6069 | if (!SetCommTimeouts (hnd, &ct)) | |
6070 | error ("SetCommTimeouts() failed"); | |
6071 | /* Read port attributes and prepare default configuration. */ | |
6072 | memset (&dcb, 0, sizeof (dcb)); | |
6073 | dcb.DCBlength = sizeof (DCB); | |
6074 | if (!GetCommState (hnd, &dcb)) | |
6075 | error ("GetCommState() failed"); | |
6076 | dcb.fBinary = TRUE; | |
6077 | dcb.fNull = FALSE; | |
6078 | dcb.fAbortOnError = FALSE; | |
6079 | /* dcb.XonLim and dcb.XoffLim are set by GetCommState() */ | |
6080 | dcb.ErrorChar = 0; | |
6081 | dcb.EofChar = 0; | |
6082 | dcb.EvtChar = 0; | |
6083 | ||
6084 | /* Configure speed. */ | |
6085 | if (!NILP (Fplist_member (contact, QCspeed))) | |
6086 | tem = Fplist_get (contact, QCspeed); | |
6087 | else | |
6088 | tem = Fplist_get (p->childp, QCspeed); | |
6089 | CHECK_NUMBER (tem); | |
6090 | dcb.BaudRate = XINT (tem); | |
6091 | childp2 = Fplist_put (childp2, QCspeed, tem); | |
6092 | ||
6093 | /* Configure bytesize. */ | |
6094 | if (!NILP (Fplist_member (contact, QCbytesize))) | |
6095 | tem = Fplist_get (contact, QCbytesize); | |
6096 | else | |
6097 | tem = Fplist_get (p->childp, QCbytesize); | |
6098 | if (NILP (tem)) | |
6099 | tem = make_number (8); | |
6100 | CHECK_NUMBER (tem); | |
6101 | if (XINT (tem) != 7 && XINT (tem) != 8) | |
6102 | error (":bytesize must be nil (8), 7, or 8"); | |
6103 | dcb.ByteSize = XINT (tem); | |
6104 | summary[0] = XINT (tem) + '0'; | |
6105 | childp2 = Fplist_put (childp2, QCbytesize, tem); | |
6106 | ||
6107 | /* Configure parity. */ | |
6108 | if (!NILP (Fplist_member (contact, QCparity))) | |
6109 | tem = Fplist_get (contact, QCparity); | |
6110 | else | |
6111 | tem = Fplist_get (p->childp, QCparity); | |
6112 | if (!NILP (tem) && !EQ (tem, Qeven) && !EQ (tem, Qodd)) | |
6113 | error (":parity must be nil (no parity), `even', or `odd'"); | |
6114 | dcb.fParity = FALSE; | |
6115 | dcb.Parity = NOPARITY; | |
6116 | dcb.fErrorChar = FALSE; | |
6117 | if (NILP (tem)) | |
6118 | { | |
6119 | summary[1] = 'N'; | |
6120 | } | |
6121 | else if (EQ (tem, Qeven)) | |
6122 | { | |
6123 | summary[1] = 'E'; | |
6124 | dcb.fParity = TRUE; | |
6125 | dcb.Parity = EVENPARITY; | |
6126 | dcb.fErrorChar = TRUE; | |
6127 | } | |
6128 | else if (EQ (tem, Qodd)) | |
6129 | { | |
6130 | summary[1] = 'O'; | |
6131 | dcb.fParity = TRUE; | |
6132 | dcb.Parity = ODDPARITY; | |
6133 | dcb.fErrorChar = TRUE; | |
6134 | } | |
6135 | childp2 = Fplist_put (childp2, QCparity, tem); | |
6136 | ||
6137 | /* Configure stopbits. */ | |
6138 | if (!NILP (Fplist_member (contact, QCstopbits))) | |
6139 | tem = Fplist_get (contact, QCstopbits); | |
6140 | else | |
6141 | tem = Fplist_get (p->childp, QCstopbits); | |
6142 | if (NILP (tem)) | |
6143 | tem = make_number (1); | |
6144 | CHECK_NUMBER (tem); | |
6145 | if (XINT (tem) != 1 && XINT (tem) != 2) | |
6146 | error (":stopbits must be nil (1 stopbit), 1, or 2"); | |
6147 | summary[2] = XINT (tem) + '0'; | |
6148 | if (XINT (tem) == 1) | |
6149 | dcb.StopBits = ONESTOPBIT; | |
6150 | else if (XINT (tem) == 2) | |
6151 | dcb.StopBits = TWOSTOPBITS; | |
6152 | childp2 = Fplist_put (childp2, QCstopbits, tem); | |
6153 | ||
6154 | /* Configure flowcontrol. */ | |
6155 | if (!NILP (Fplist_member (contact, QCflowcontrol))) | |
6156 | tem = Fplist_get (contact, QCflowcontrol); | |
6157 | else | |
6158 | tem = Fplist_get (p->childp, QCflowcontrol); | |
6159 | if (!NILP (tem) && !EQ (tem, Qhw) && !EQ (tem, Qsw)) | |
6160 | error (":flowcontrol must be nil (no flowcontrol), `hw', or `sw'"); | |
6161 | dcb.fOutxCtsFlow = FALSE; | |
6162 | dcb.fOutxDsrFlow = FALSE; | |
6163 | dcb.fDtrControl = DTR_CONTROL_DISABLE; | |
6164 | dcb.fDsrSensitivity = FALSE; | |
6165 | dcb.fTXContinueOnXoff = FALSE; | |
6166 | dcb.fOutX = FALSE; | |
6167 | dcb.fInX = FALSE; | |
6168 | dcb.fRtsControl = RTS_CONTROL_DISABLE; | |
6169 | dcb.XonChar = 17; /* Control-Q */ | |
6170 | dcb.XoffChar = 19; /* Control-S */ | |
6171 | if (NILP (tem)) | |
6172 | { | |
6173 | /* Already configured. */ | |
6174 | } | |
6175 | else if (EQ (tem, Qhw)) | |
6176 | { | |
6177 | dcb.fRtsControl = RTS_CONTROL_HANDSHAKE; | |
6178 | dcb.fOutxCtsFlow = TRUE; | |
6179 | } | |
6180 | else if (EQ (tem, Qsw)) | |
6181 | { | |
6182 | dcb.fOutX = TRUE; | |
6183 | dcb.fInX = TRUE; | |
6184 | } | |
6185 | childp2 = Fplist_put (childp2, QCflowcontrol, tem); | |
6186 | ||
6187 | /* Activate configuration. */ | |
6188 | if (!SetCommState (hnd, &dcb)) | |
6189 | error ("SetCommState() failed"); | |
6190 | ||
6191 | childp2 = Fplist_put (childp2, QCsummary, build_string (summary)); | |
6192 | p->childp = childp2; | |
6193 | } | |
6194 | ||
e061a11b TZ |
6195 | #ifdef HAVE_GNUTLS |
6196 | ||
6197 | ssize_t | |
6198 | emacs_gnutls_pull (gnutls_transport_ptr_t p, void* buf, size_t sz) | |
6199 | { | |
6200 | int n, sc, err; | |
6201 | SELECT_TYPE fdset; | |
6202 | EMACS_TIME timeout; | |
6203 | struct Lisp_Process *process = (struct Lisp_Process *)p; | |
6204 | int fd = process->infd; | |
6205 | ||
6206 | for (;;) | |
6207 | { | |
6208 | n = sys_read(fd, (char*)buf, sz); | |
6209 | ||
6210 | if (n >= 0) | |
6211 | return n; | |
6212 | ||
6213 | err = errno; | |
6214 | ||
6215 | if (err == EWOULDBLOCK) | |
6216 | { | |
6217 | /* Set a small timeout. */ | |
6218 | EMACS_SET_SECS_USECS(timeout, 1, 0); | |
6219 | FD_ZERO (&fdset); | |
6220 | FD_SET ((int)fd, &fdset); | |
6221 | ||
6222 | /* Use select with the timeout to poll the selector. */ | |
6223 | sc = select (fd + 1, &fdset, (SELECT_TYPE *)0, (SELECT_TYPE *)0, | |
6224 | &timeout); | |
6225 | ||
6226 | if (sc > 0) | |
6227 | continue; /* Try again. */ | |
6228 | ||
6229 | /* Translate the WSAEWOULDBLOCK alias EWOULDBLOCK to EAGAIN. | |
6230 | Also accept select return 0 as an indicator to EAGAIN. */ | |
6231 | if (sc == 0 || errno == EWOULDBLOCK) | |
6232 | err = EAGAIN; | |
6233 | else | |
6234 | err = errno; /* Other errors are just passed on. */ | |
6235 | } | |
6236 | ||
0898ca10 | 6237 | emacs_gnutls_transport_set_errno (process->gnutls_state, err); |
e061a11b TZ |
6238 | |
6239 | return -1; | |
6240 | } | |
6241 | } | |
ab5796a9 | 6242 | |
e061a11b TZ |
6243 | ssize_t |
6244 | emacs_gnutls_push (gnutls_transport_ptr_t p, const void* buf, size_t sz) | |
6245 | { | |
6246 | struct Lisp_Process *process = (struct Lisp_Process *)p; | |
42ce4c63 | 6247 | int fd = process->outfd; |
e061a11b TZ |
6248 | ssize_t n = sys_write(fd, buf, sz); |
6249 | ||
6250 | /* 0 or more bytes written means everything went fine. */ | |
6251 | if (n >= 0) | |
6252 | return n; | |
6253 | ||
6254 | /* Negative bytes written means we got an error in errno. | |
6255 | Translate the WSAEWOULDBLOCK alias EWOULDBLOCK to EAGAIN. */ | |
0898ca10 JB |
6256 | emacs_gnutls_transport_set_errno (process->gnutls_state, |
6257 | errno == EWOULDBLOCK ? EAGAIN : errno); | |
e061a11b TZ |
6258 | |
6259 | return -1; | |
6260 | } | |
6261 | #endif /* HAVE_GNUTLS */ | |
6262 | ||
6263 | /* end of w32.c */ |