Commit | Line | Data |
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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> | |
a6fc3b5c | 97 | #ifndef _MSC_VER |
69e847be | 98 | #include <w32api.h> |
a6fc3b5c | 99 | #endif |
5e617bc2 | 100 | #if !defined (__MINGW32__) || __W32API_MAJOR_VERSION < 3 || (__W32API_MAJOR_VERSION == 3 && __W32API_MINOR_VERSION < 15) |
7c80d5ec | 101 | /* This either is not in psapi.h or guarded by higher value of |
a6d3e72e | 102 | _WIN32_WINNT than what we use. w32api supplied with MinGW 3.15 |
69e847be | 103 | defines it in psapi.h */ |
7c80d5ec | 104 | typedef struct _PROCESS_MEMORY_COUNTERS_EX { |
bedf4aab JB |
105 | DWORD cb; |
106 | DWORD PageFaultCount; | |
107 | DWORD PeakWorkingSetSize; | |
108 | DWORD WorkingSetSize; | |
109 | DWORD QuotaPeakPagedPoolUsage; | |
110 | DWORD QuotaPagedPoolUsage; | |
111 | DWORD QuotaPeakNonPagedPoolUsage; | |
112 | DWORD QuotaNonPagedPoolUsage; | |
113 | DWORD PagefileUsage; | |
114 | DWORD PeakPagefileUsage; | |
115 | DWORD PrivateUsage; | |
7c80d5ec | 116 | } PROCESS_MEMORY_COUNTERS_EX,*PPROCESS_MEMORY_COUNTERS_EX; |
69e847be | 117 | #endif |
7c80d5ec | 118 | |
7d701334 | 119 | /* TCP connection support. */ |
480b0c5b GV |
120 | #include <sys/socket.h> |
121 | #undef socket | |
122 | #undef bind | |
123 | #undef connect | |
124 | #undef htons | |
125 | #undef ntohs | |
126 | #undef inet_addr | |
127 | #undef gethostname | |
128 | #undef gethostbyname | |
129 | #undef getservbyname | |
ecd270eb | 130 | #undef getpeername |
380961a6 | 131 | #undef shutdown |
962955c5 JR |
132 | #undef setsockopt |
133 | #undef listen | |
134 | #undef getsockname | |
135 | #undef accept | |
136 | #undef recvfrom | |
137 | #undef sendto | |
00b3b7b3 | 138 | |
489f9371 | 139 | #include "w32.h" |
480b0c5b | 140 | #include "ndir.h" |
489f9371 | 141 | #include "w32heap.h" |
253574a6 | 142 | #include "systime.h" |
f481eb31 | 143 | #include "dispextern.h" /* for xstrcasecmp */ |
7c80d5ec | 144 | #include "coding.h" /* for Vlocale_coding_system */ |
253574a6 | 145 | |
973f782d EZ |
146 | #include "careadlinkat.h" |
147 | #include "allocator.h" | |
148 | ||
1eb8fd91 | 149 | /* For serial_configure and serial_open. */ |
d888760c | 150 | #include "process.h" |
d888760c | 151 | |
2d5324c5 JR |
152 | typedef HRESULT (WINAPI * ShGetFolderPath_fn) |
153 | (IN HWND, IN int, IN HANDLE, IN DWORD, OUT char *); | |
154 | ||
0898ca10 JB |
155 | Lisp_Object QCloaded_from; |
156 | ||
b56ceb92 | 157 | void globals_of_w32 (void); |
8aaaec6b | 158 | static DWORD get_rid (PSID); |
9785d95b | 159 | |
18e070ac | 160 | \f |
9d95a291 EZ |
161 | /* Initialization states. |
162 | ||
163 | WARNING: If you add any more such variables for additional APIs, | |
164 | you MUST add initialization for them to globals_of_w32 | |
165 | below. This is because these variables might get set | |
166 | to non-NULL values during dumping, but the dumped Emacs | |
167 | cannot reuse those values, because it could be run on a | |
168 | different version of the OS, where API addresses are | |
169 | different. */ | |
9785d95b BK |
170 | static BOOL g_b_init_is_windows_9x; |
171 | static BOOL g_b_init_open_process_token; | |
172 | static BOOL g_b_init_get_token_information; | |
173 | static BOOL g_b_init_lookup_account_sid; | |
c617afce EZ |
174 | static BOOL g_b_init_get_sid_sub_authority; |
175 | static BOOL g_b_init_get_sid_sub_authority_count; | |
8aaaec6b EZ |
176 | static BOOL g_b_init_get_file_security; |
177 | static BOOL g_b_init_get_security_descriptor_owner; | |
178 | static BOOL g_b_init_get_security_descriptor_group; | |
179 | static BOOL g_b_init_is_valid_sid; | |
7c80d5ec EZ |
180 | static BOOL g_b_init_create_toolhelp32_snapshot; |
181 | static BOOL g_b_init_process32_first; | |
182 | static BOOL g_b_init_process32_next; | |
183 | static BOOL g_b_init_open_thread_token; | |
184 | static BOOL g_b_init_impersonate_self; | |
185 | static BOOL g_b_init_revert_to_self; | |
186 | static BOOL g_b_init_get_process_memory_info; | |
187 | static BOOL g_b_init_get_process_working_set_size; | |
188 | static BOOL g_b_init_global_memory_status; | |
189 | static BOOL g_b_init_global_memory_status_ex; | |
f8b35b24 EZ |
190 | static BOOL g_b_init_get_length_sid; |
191 | static BOOL g_b_init_equal_sid; | |
192 | static BOOL g_b_init_copy_sid; | |
ad9e2d54 EZ |
193 | static BOOL g_b_init_get_native_system_info; |
194 | static BOOL g_b_init_get_system_times; | |
9785d95b | 195 | |
f60ae425 BK |
196 | /* |
197 | BEGIN: Wrapper functions around OpenProcessToken | |
198 | and other functions in advapi32.dll that are only | |
199 | supported in Windows NT / 2k / XP | |
200 | */ | |
201 | /* ** Function pointer typedefs ** */ | |
202 | typedef BOOL (WINAPI * OpenProcessToken_Proc) ( | |
203 | HANDLE ProcessHandle, | |
204 | DWORD DesiredAccess, | |
205 | PHANDLE TokenHandle); | |
206 | typedef BOOL (WINAPI * GetTokenInformation_Proc) ( | |
207 | HANDLE TokenHandle, | |
208 | TOKEN_INFORMATION_CLASS TokenInformationClass, | |
209 | LPVOID TokenInformation, | |
210 | DWORD TokenInformationLength, | |
211 | PDWORD ReturnLength); | |
74258518 JR |
212 | typedef BOOL (WINAPI * GetProcessTimes_Proc) ( |
213 | HANDLE process_handle, | |
214 | LPFILETIME creation_time, | |
215 | LPFILETIME exit_time, | |
216 | LPFILETIME kernel_time, | |
217 | LPFILETIME user_time); | |
218 | ||
219 | GetProcessTimes_Proc get_process_times_fn = NULL; | |
220 | ||
f60ae425 BK |
221 | #ifdef _UNICODE |
222 | const char * const LookupAccountSid_Name = "LookupAccountSidW"; | |
8aaaec6b | 223 | const char * const GetFileSecurity_Name = "GetFileSecurityW"; |
f60ae425 BK |
224 | #else |
225 | const char * const LookupAccountSid_Name = "LookupAccountSidA"; | |
8aaaec6b | 226 | const char * const GetFileSecurity_Name = "GetFileSecurityA"; |
f60ae425 BK |
227 | #endif |
228 | typedef BOOL (WINAPI * LookupAccountSid_Proc) ( | |
229 | LPCTSTR lpSystemName, | |
230 | PSID Sid, | |
231 | LPTSTR Name, | |
232 | LPDWORD cbName, | |
233 | LPTSTR DomainName, | |
234 | LPDWORD cbDomainName, | |
235 | PSID_NAME_USE peUse); | |
c617afce EZ |
236 | typedef PDWORD (WINAPI * GetSidSubAuthority_Proc) ( |
237 | PSID pSid, | |
238 | DWORD n); | |
239 | typedef PUCHAR (WINAPI * GetSidSubAuthorityCount_Proc) ( | |
240 | PSID pSid); | |
8aaaec6b EZ |
241 | typedef BOOL (WINAPI * GetFileSecurity_Proc) ( |
242 | LPCTSTR lpFileName, | |
243 | SECURITY_INFORMATION RequestedInformation, | |
244 | PSECURITY_DESCRIPTOR pSecurityDescriptor, | |
245 | DWORD nLength, | |
246 | LPDWORD lpnLengthNeeded); | |
247 | typedef BOOL (WINAPI * GetSecurityDescriptorOwner_Proc) ( | |
248 | PSECURITY_DESCRIPTOR pSecurityDescriptor, | |
249 | PSID *pOwner, | |
250 | LPBOOL lpbOwnerDefaulted); | |
251 | typedef BOOL (WINAPI * GetSecurityDescriptorGroup_Proc) ( | |
252 | PSECURITY_DESCRIPTOR pSecurityDescriptor, | |
253 | PSID *pGroup, | |
254 | LPBOOL lpbGroupDefaulted); | |
255 | typedef BOOL (WINAPI * IsValidSid_Proc) ( | |
256 | PSID sid); | |
7c80d5ec EZ |
257 | typedef HANDLE (WINAPI * CreateToolhelp32Snapshot_Proc) ( |
258 | DWORD dwFlags, | |
259 | DWORD th32ProcessID); | |
260 | typedef BOOL (WINAPI * Process32First_Proc) ( | |
261 | HANDLE hSnapshot, | |
262 | LPPROCESSENTRY32 lppe); | |
263 | typedef BOOL (WINAPI * Process32Next_Proc) ( | |
264 | HANDLE hSnapshot, | |
265 | LPPROCESSENTRY32 lppe); | |
266 | typedef BOOL (WINAPI * OpenThreadToken_Proc) ( | |
267 | HANDLE ThreadHandle, | |
268 | DWORD DesiredAccess, | |
269 | BOOL OpenAsSelf, | |
270 | PHANDLE TokenHandle); | |
271 | typedef BOOL (WINAPI * ImpersonateSelf_Proc) ( | |
272 | SECURITY_IMPERSONATION_LEVEL ImpersonationLevel); | |
273 | typedef BOOL (WINAPI * RevertToSelf_Proc) (void); | |
274 | typedef BOOL (WINAPI * GetProcessMemoryInfo_Proc) ( | |
275 | HANDLE Process, | |
276 | PPROCESS_MEMORY_COUNTERS ppsmemCounters, | |
277 | DWORD cb); | |
278 | typedef BOOL (WINAPI * GetProcessWorkingSetSize_Proc) ( | |
279 | HANDLE hProcess, | |
280 | DWORD * lpMinimumWorkingSetSize, | |
281 | DWORD * lpMaximumWorkingSetSize); | |
282 | typedef BOOL (WINAPI * GlobalMemoryStatus_Proc) ( | |
283 | LPMEMORYSTATUS lpBuffer); | |
284 | typedef BOOL (WINAPI * GlobalMemoryStatusEx_Proc) ( | |
b8526f6e | 285 | LPMEMORY_STATUS_EX lpBuffer); |
f8b35b24 EZ |
286 | typedef BOOL (WINAPI * CopySid_Proc) ( |
287 | DWORD nDestinationSidLength, | |
288 | PSID pDestinationSid, | |
289 | PSID pSourceSid); | |
290 | typedef BOOL (WINAPI * EqualSid_Proc) ( | |
291 | PSID pSid1, | |
292 | PSID pSid2); | |
293 | typedef DWORD (WINAPI * GetLengthSid_Proc) ( | |
294 | PSID pSid); | |
ad9e2d54 EZ |
295 | typedef void (WINAPI * GetNativeSystemInfo_Proc) ( |
296 | LPSYSTEM_INFO lpSystemInfo); | |
297 | typedef BOOL (WINAPI * GetSystemTimes_Proc) ( | |
298 | LPFILETIME lpIdleTime, | |
299 | LPFILETIME lpKernelTime, | |
300 | LPFILETIME lpUserTime); | |
f8b35b24 | 301 | |
f60ae425 | 302 | /* ** A utility function ** */ |
9bfb11f9 | 303 | static BOOL |
b56ceb92 | 304 | is_windows_9x (void) |
f60ae425 | 305 | { |
bedf4aab | 306 | static BOOL s_b_ret = 0; |
f60ae425 | 307 | OSVERSIONINFO os_ver; |
9785d95b | 308 | if (g_b_init_is_windows_9x == 0) |
f60ae425 | 309 | { |
9785d95b | 310 | g_b_init_is_windows_9x = 1; |
ed3751c8 JB |
311 | ZeroMemory (&os_ver, sizeof (OSVERSIONINFO)); |
312 | os_ver.dwOSVersionInfoSize = sizeof (OSVERSIONINFO); | |
9785d95b BK |
313 | if (GetVersionEx (&os_ver)) |
314 | { | |
315 | s_b_ret = (os_ver.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS); | |
316 | } | |
f60ae425 | 317 | } |
9785d95b | 318 | return s_b_ret; |
f60ae425 BK |
319 | } |
320 | ||
74258518 JR |
321 | /* Get total user and system times for get-internal-run-time. |
322 | Returns a list of three integers if the times are provided by the OS | |
323 | (NT derivatives), otherwise it returns the result of current-time. */ | |
324 | Lisp_Object | |
b56ceb92 | 325 | w32_get_internal_run_time (void) |
74258518 JR |
326 | { |
327 | if (get_process_times_fn) | |
328 | { | |
329 | FILETIME create, exit, kernel, user; | |
ed3751c8 | 330 | HANDLE proc = GetCurrentProcess (); |
74258518 JR |
331 | if ((*get_process_times_fn) (proc, &create, &exit, &kernel, &user)) |
332 | { | |
333 | LARGE_INTEGER user_int, kernel_int, total; | |
334 | int microseconds; | |
335 | user_int.LowPart = user.dwLowDateTime; | |
336 | user_int.HighPart = user.dwHighDateTime; | |
337 | kernel_int.LowPart = kernel.dwLowDateTime; | |
338 | kernel_int.HighPart = kernel.dwHighDateTime; | |
339 | total.QuadPart = user_int.QuadPart + kernel_int.QuadPart; | |
340 | /* FILETIME is 100 nanosecond increments, Emacs only wants | |
341 | microsecond resolution. */ | |
342 | total.QuadPart /= 10; | |
343 | microseconds = total.QuadPart % 1000000; | |
344 | total.QuadPart /= 1000000; | |
345 | ||
346 | /* Sanity check to make sure we can represent the result. */ | |
347 | if (total.HighPart == 0) | |
348 | { | |
349 | int secs = total.LowPart; | |
350 | ||
351 | return list3 (make_number ((secs >> 16) & 0xffff), | |
352 | make_number (secs & 0xffff), | |
353 | make_number (microseconds)); | |
354 | } | |
355 | } | |
356 | } | |
357 | ||
358 | return Fcurrent_time (); | |
359 | } | |
360 | ||
f60ae425 BK |
361 | /* ** The wrapper functions ** */ |
362 | ||
bedf4aab JB |
363 | static BOOL WINAPI |
364 | open_process_token (HANDLE ProcessHandle, | |
365 | DWORD DesiredAccess, | |
366 | PHANDLE TokenHandle) | |
f60ae425 | 367 | { |
9785d95b | 368 | static OpenProcessToken_Proc s_pfn_Open_Process_Token = NULL; |
f60ae425 BK |
369 | HMODULE hm_advapi32 = NULL; |
370 | if (is_windows_9x () == TRUE) | |
371 | { | |
372 | return FALSE; | |
373 | } | |
9785d95b BK |
374 | if (g_b_init_open_process_token == 0) |
375 | { | |
376 | g_b_init_open_process_token = 1; | |
377 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
378 | s_pfn_Open_Process_Token = | |
379 | (OpenProcessToken_Proc) GetProcAddress (hm_advapi32, "OpenProcessToken"); | |
380 | } | |
381 | if (s_pfn_Open_Process_Token == NULL) | |
f60ae425 BK |
382 | { |
383 | return FALSE; | |
384 | } | |
385 | return ( | |
9785d95b | 386 | s_pfn_Open_Process_Token ( |
f60ae425 BK |
387 | ProcessHandle, |
388 | DesiredAccess, | |
389 | TokenHandle) | |
390 | ); | |
391 | } | |
392 | ||
bedf4aab JB |
393 | static BOOL WINAPI |
394 | get_token_information (HANDLE TokenHandle, | |
395 | TOKEN_INFORMATION_CLASS TokenInformationClass, | |
396 | LPVOID TokenInformation, | |
397 | DWORD TokenInformationLength, | |
398 | PDWORD ReturnLength) | |
f60ae425 | 399 | { |
9785d95b | 400 | static GetTokenInformation_Proc s_pfn_Get_Token_Information = NULL; |
f60ae425 BK |
401 | HMODULE hm_advapi32 = NULL; |
402 | if (is_windows_9x () == TRUE) | |
403 | { | |
404 | return FALSE; | |
405 | } | |
9785d95b BK |
406 | if (g_b_init_get_token_information == 0) |
407 | { | |
408 | g_b_init_get_token_information = 1; | |
409 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
410 | s_pfn_Get_Token_Information = | |
411 | (GetTokenInformation_Proc) GetProcAddress (hm_advapi32, "GetTokenInformation"); | |
412 | } | |
413 | if (s_pfn_Get_Token_Information == NULL) | |
f60ae425 BK |
414 | { |
415 | return FALSE; | |
416 | } | |
417 | return ( | |
9785d95b | 418 | s_pfn_Get_Token_Information ( |
f60ae425 BK |
419 | TokenHandle, |
420 | TokenInformationClass, | |
421 | TokenInformation, | |
422 | TokenInformationLength, | |
423 | ReturnLength) | |
424 | ); | |
425 | } | |
426 | ||
bedf4aab JB |
427 | static BOOL WINAPI |
428 | lookup_account_sid (LPCTSTR lpSystemName, | |
429 | PSID Sid, | |
430 | LPTSTR Name, | |
431 | LPDWORD cbName, | |
432 | LPTSTR DomainName, | |
433 | LPDWORD cbDomainName, | |
434 | PSID_NAME_USE peUse) | |
f60ae425 | 435 | { |
9785d95b | 436 | static LookupAccountSid_Proc s_pfn_Lookup_Account_Sid = NULL; |
f60ae425 BK |
437 | HMODULE hm_advapi32 = NULL; |
438 | if (is_windows_9x () == TRUE) | |
439 | { | |
440 | return FALSE; | |
441 | } | |
9785d95b BK |
442 | if (g_b_init_lookup_account_sid == 0) |
443 | { | |
444 | g_b_init_lookup_account_sid = 1; | |
445 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
446 | s_pfn_Lookup_Account_Sid = | |
447 | (LookupAccountSid_Proc) GetProcAddress (hm_advapi32, LookupAccountSid_Name); | |
448 | } | |
449 | if (s_pfn_Lookup_Account_Sid == NULL) | |
f60ae425 BK |
450 | { |
451 | return FALSE; | |
452 | } | |
453 | return ( | |
9785d95b | 454 | s_pfn_Lookup_Account_Sid ( |
f60ae425 BK |
455 | lpSystemName, |
456 | Sid, | |
457 | Name, | |
458 | cbName, | |
459 | DomainName, | |
460 | cbDomainName, | |
461 | peUse) | |
462 | ); | |
463 | } | |
464 | ||
bedf4aab JB |
465 | static PDWORD WINAPI |
466 | get_sid_sub_authority (PSID pSid, DWORD n) | |
c617afce EZ |
467 | { |
468 | static GetSidSubAuthority_Proc s_pfn_Get_Sid_Sub_Authority = NULL; | |
6811b9f4 | 469 | static DWORD zero = 0U; |
c617afce EZ |
470 | HMODULE hm_advapi32 = NULL; |
471 | if (is_windows_9x () == TRUE) | |
472 | { | |
6811b9f4 | 473 | return &zero; |
c617afce EZ |
474 | } |
475 | if (g_b_init_get_sid_sub_authority == 0) | |
476 | { | |
477 | g_b_init_get_sid_sub_authority = 1; | |
478 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
479 | s_pfn_Get_Sid_Sub_Authority = | |
480 | (GetSidSubAuthority_Proc) GetProcAddress ( | |
481 | hm_advapi32, "GetSidSubAuthority"); | |
482 | } | |
483 | if (s_pfn_Get_Sid_Sub_Authority == NULL) | |
484 | { | |
6811b9f4 | 485 | return &zero; |
c617afce EZ |
486 | } |
487 | return (s_pfn_Get_Sid_Sub_Authority (pSid, n)); | |
488 | } | |
489 | ||
bedf4aab JB |
490 | static PUCHAR WINAPI |
491 | get_sid_sub_authority_count (PSID pSid) | |
c617afce EZ |
492 | { |
493 | static GetSidSubAuthorityCount_Proc s_pfn_Get_Sid_Sub_Authority_Count = NULL; | |
6811b9f4 | 494 | static UCHAR zero = 0U; |
c617afce EZ |
495 | HMODULE hm_advapi32 = NULL; |
496 | if (is_windows_9x () == TRUE) | |
497 | { | |
6811b9f4 | 498 | return &zero; |
c617afce EZ |
499 | } |
500 | if (g_b_init_get_sid_sub_authority_count == 0) | |
501 | { | |
502 | g_b_init_get_sid_sub_authority_count = 1; | |
503 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
504 | s_pfn_Get_Sid_Sub_Authority_Count = | |
505 | (GetSidSubAuthorityCount_Proc) GetProcAddress ( | |
506 | hm_advapi32, "GetSidSubAuthorityCount"); | |
507 | } | |
508 | if (s_pfn_Get_Sid_Sub_Authority_Count == NULL) | |
509 | { | |
6811b9f4 | 510 | return &zero; |
c617afce EZ |
511 | } |
512 | return (s_pfn_Get_Sid_Sub_Authority_Count (pSid)); | |
513 | } | |
514 | ||
bedf4aab JB |
515 | static BOOL WINAPI |
516 | get_file_security (LPCTSTR lpFileName, | |
517 | SECURITY_INFORMATION RequestedInformation, | |
518 | PSECURITY_DESCRIPTOR pSecurityDescriptor, | |
519 | DWORD nLength, | |
520 | LPDWORD lpnLengthNeeded) | |
8aaaec6b EZ |
521 | { |
522 | static GetFileSecurity_Proc s_pfn_Get_File_Security = NULL; | |
523 | HMODULE hm_advapi32 = NULL; | |
524 | if (is_windows_9x () == TRUE) | |
525 | { | |
526 | return FALSE; | |
527 | } | |
528 | if (g_b_init_get_file_security == 0) | |
529 | { | |
530 | g_b_init_get_file_security = 1; | |
531 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
532 | s_pfn_Get_File_Security = | |
533 | (GetFileSecurity_Proc) GetProcAddress ( | |
534 | hm_advapi32, GetFileSecurity_Name); | |
535 | } | |
536 | if (s_pfn_Get_File_Security == NULL) | |
537 | { | |
538 | return FALSE; | |
539 | } | |
540 | return (s_pfn_Get_File_Security (lpFileName, RequestedInformation, | |
541 | pSecurityDescriptor, nLength, | |
542 | lpnLengthNeeded)); | |
543 | } | |
544 | ||
bedf4aab JB |
545 | static BOOL WINAPI |
546 | get_security_descriptor_owner (PSECURITY_DESCRIPTOR pSecurityDescriptor, | |
547 | PSID *pOwner, | |
548 | LPBOOL lpbOwnerDefaulted) | |
8aaaec6b EZ |
549 | { |
550 | static GetSecurityDescriptorOwner_Proc s_pfn_Get_Security_Descriptor_Owner = NULL; | |
551 | HMODULE hm_advapi32 = NULL; | |
552 | if (is_windows_9x () == TRUE) | |
553 | { | |
554 | return FALSE; | |
555 | } | |
556 | if (g_b_init_get_security_descriptor_owner == 0) | |
557 | { | |
558 | g_b_init_get_security_descriptor_owner = 1; | |
559 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
560 | s_pfn_Get_Security_Descriptor_Owner = | |
561 | (GetSecurityDescriptorOwner_Proc) GetProcAddress ( | |
562 | hm_advapi32, "GetSecurityDescriptorOwner"); | |
563 | } | |
564 | if (s_pfn_Get_Security_Descriptor_Owner == NULL) | |
565 | { | |
566 | return FALSE; | |
567 | } | |
568 | return (s_pfn_Get_Security_Descriptor_Owner (pSecurityDescriptor, pOwner, | |
569 | lpbOwnerDefaulted)); | |
570 | } | |
571 | ||
bedf4aab JB |
572 | static BOOL WINAPI |
573 | get_security_descriptor_group (PSECURITY_DESCRIPTOR pSecurityDescriptor, | |
574 | PSID *pGroup, | |
575 | LPBOOL lpbGroupDefaulted) | |
8aaaec6b EZ |
576 | { |
577 | static GetSecurityDescriptorGroup_Proc s_pfn_Get_Security_Descriptor_Group = NULL; | |
578 | HMODULE hm_advapi32 = NULL; | |
579 | if (is_windows_9x () == TRUE) | |
580 | { | |
581 | return FALSE; | |
582 | } | |
583 | if (g_b_init_get_security_descriptor_group == 0) | |
584 | { | |
585 | g_b_init_get_security_descriptor_group = 1; | |
586 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
587 | s_pfn_Get_Security_Descriptor_Group = | |
588 | (GetSecurityDescriptorGroup_Proc) GetProcAddress ( | |
589 | hm_advapi32, "GetSecurityDescriptorGroup"); | |
590 | } | |
591 | if (s_pfn_Get_Security_Descriptor_Group == NULL) | |
592 | { | |
593 | return FALSE; | |
594 | } | |
595 | return (s_pfn_Get_Security_Descriptor_Group (pSecurityDescriptor, pGroup, | |
596 | lpbGroupDefaulted)); | |
597 | } | |
598 | ||
bedf4aab JB |
599 | static BOOL WINAPI |
600 | is_valid_sid (PSID sid) | |
8aaaec6b EZ |
601 | { |
602 | static IsValidSid_Proc s_pfn_Is_Valid_Sid = NULL; | |
603 | HMODULE hm_advapi32 = NULL; | |
604 | if (is_windows_9x () == TRUE) | |
605 | { | |
606 | return FALSE; | |
607 | } | |
608 | if (g_b_init_is_valid_sid == 0) | |
609 | { | |
610 | g_b_init_is_valid_sid = 1; | |
611 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
612 | s_pfn_Is_Valid_Sid = | |
613 | (IsValidSid_Proc) GetProcAddress ( | |
614 | hm_advapi32, "IsValidSid"); | |
615 | } | |
616 | if (s_pfn_Is_Valid_Sid == NULL) | |
617 | { | |
618 | return FALSE; | |
619 | } | |
620 | return (s_pfn_Is_Valid_Sid (sid)); | |
621 | } | |
622 | ||
bedf4aab JB |
623 | static BOOL WINAPI |
624 | equal_sid (PSID sid1, PSID sid2) | |
f8b35b24 EZ |
625 | { |
626 | static EqualSid_Proc s_pfn_Equal_Sid = NULL; | |
627 | HMODULE hm_advapi32 = NULL; | |
628 | if (is_windows_9x () == TRUE) | |
629 | { | |
630 | return FALSE; | |
631 | } | |
632 | if (g_b_init_equal_sid == 0) | |
633 | { | |
634 | g_b_init_equal_sid = 1; | |
635 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
636 | s_pfn_Equal_Sid = | |
637 | (EqualSid_Proc) GetProcAddress ( | |
638 | hm_advapi32, "EqualSid"); | |
639 | } | |
640 | if (s_pfn_Equal_Sid == NULL) | |
641 | { | |
642 | return FALSE; | |
643 | } | |
644 | return (s_pfn_Equal_Sid (sid1, sid2)); | |
645 | } | |
646 | ||
bedf4aab JB |
647 | static DWORD WINAPI |
648 | get_length_sid (PSID sid) | |
f8b35b24 EZ |
649 | { |
650 | static GetLengthSid_Proc s_pfn_Get_Length_Sid = NULL; | |
651 | HMODULE hm_advapi32 = NULL; | |
652 | if (is_windows_9x () == TRUE) | |
653 | { | |
654 | return 0; | |
655 | } | |
656 | if (g_b_init_get_length_sid == 0) | |
657 | { | |
658 | g_b_init_get_length_sid = 1; | |
659 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
660 | s_pfn_Get_Length_Sid = | |
661 | (GetLengthSid_Proc) GetProcAddress ( | |
662 | hm_advapi32, "GetLengthSid"); | |
663 | } | |
664 | if (s_pfn_Get_Length_Sid == NULL) | |
665 | { | |
666 | return 0; | |
667 | } | |
668 | return (s_pfn_Get_Length_Sid (sid)); | |
669 | } | |
670 | ||
bedf4aab JB |
671 | static BOOL WINAPI |
672 | copy_sid (DWORD destlen, PSID dest, PSID src) | |
f8b35b24 EZ |
673 | { |
674 | static CopySid_Proc s_pfn_Copy_Sid = NULL; | |
675 | HMODULE hm_advapi32 = NULL; | |
676 | if (is_windows_9x () == TRUE) | |
677 | { | |
678 | return FALSE; | |
679 | } | |
680 | if (g_b_init_copy_sid == 0) | |
681 | { | |
682 | g_b_init_copy_sid = 1; | |
683 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
684 | s_pfn_Copy_Sid = | |
685 | (CopySid_Proc) GetProcAddress ( | |
686 | hm_advapi32, "CopySid"); | |
687 | } | |
688 | if (s_pfn_Copy_Sid == NULL) | |
689 | { | |
690 | return FALSE; | |
691 | } | |
692 | return (s_pfn_Copy_Sid (destlen, dest, src)); | |
693 | } | |
694 | ||
f60ae425 BK |
695 | /* |
696 | END: Wrapper functions around OpenProcessToken | |
697 | and other functions in advapi32.dll that are only | |
698 | supported in Windows NT / 2k / XP | |
699 | */ | |
700 | ||
bedf4aab JB |
701 | static void WINAPI |
702 | get_native_system_info (LPSYSTEM_INFO lpSystemInfo) | |
ad9e2d54 EZ |
703 | { |
704 | static GetNativeSystemInfo_Proc s_pfn_Get_Native_System_Info = NULL; | |
705 | if (is_windows_9x () != TRUE) | |
706 | { | |
707 | if (g_b_init_get_native_system_info == 0) | |
708 | { | |
709 | g_b_init_get_native_system_info = 1; | |
710 | s_pfn_Get_Native_System_Info = | |
711 | (GetNativeSystemInfo_Proc)GetProcAddress (GetModuleHandle ("kernel32.dll"), | |
712 | "GetNativeSystemInfo"); | |
713 | } | |
714 | if (s_pfn_Get_Native_System_Info != NULL) | |
715 | s_pfn_Get_Native_System_Info (lpSystemInfo); | |
716 | } | |
717 | else | |
718 | lpSystemInfo->dwNumberOfProcessors = -1; | |
719 | } | |
720 | ||
bedf4aab JB |
721 | static BOOL WINAPI |
722 | get_system_times (LPFILETIME lpIdleTime, | |
723 | LPFILETIME lpKernelTime, | |
724 | LPFILETIME lpUserTime) | |
ad9e2d54 EZ |
725 | { |
726 | static GetSystemTimes_Proc s_pfn_Get_System_times = NULL; | |
727 | if (is_windows_9x () == TRUE) | |
728 | { | |
729 | return FALSE; | |
730 | } | |
731 | if (g_b_init_get_system_times == 0) | |
732 | { | |
733 | g_b_init_get_system_times = 1; | |
734 | s_pfn_Get_System_times = | |
735 | (GetSystemTimes_Proc)GetProcAddress (GetModuleHandle ("kernel32.dll"), | |
736 | "GetSystemTimes"); | |
737 | } | |
738 | if (s_pfn_Get_System_times == NULL) | |
739 | return FALSE; | |
740 | return (s_pfn_Get_System_times (lpIdleTime, lpKernelTime, lpUserTime)); | |
741 | } | |
f60ae425 | 742 | \f |
18e070ac AI |
743 | /* Equivalent of strerror for W32 error codes. */ |
744 | char * | |
745 | w32_strerror (int error_no) | |
746 | { | |
747 | static char buf[500]; | |
748 | ||
749 | if (error_no == 0) | |
750 | error_no = GetLastError (); | |
751 | ||
752 | buf[0] = '\0'; | |
753 | if (!FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM, NULL, | |
754 | error_no, | |
755 | 0, /* choose most suitable language */ | |
756 | buf, sizeof (buf), NULL)) | |
757 | sprintf (buf, "w32 error %u", error_no); | |
758 | return buf; | |
759 | } | |
760 | ||
ed91b2ad EZ |
761 | /* Return 1 if P is a valid pointer to an object of size SIZE. Return |
762 | 0 if P is NOT a valid pointer. Return -1 if we cannot validate P. | |
763 | ||
764 | This is called from alloc.c:valid_pointer_p. */ | |
765 | int | |
766 | w32_valid_pointer_p (void *p, int size) | |
767 | { | |
768 | SIZE_T done; | |
769 | HANDLE h = OpenProcess (PROCESS_VM_READ, FALSE, GetCurrentProcessId ()); | |
770 | ||
771 | if (h) | |
772 | { | |
773 | unsigned char *buf = alloca (size); | |
774 | int retval = ReadProcessMemory (h, p, buf, size, &done); | |
775 | ||
776 | CloseHandle (h); | |
777 | return retval; | |
778 | } | |
779 | else | |
780 | return -1; | |
781 | } | |
782 | ||
76b3903d | 783 | static char startup_dir[MAXPATHLEN]; |
00b3b7b3 | 784 | |
95ed0025 | 785 | /* Get the current working directory. */ |
480b0c5b | 786 | char * |
95ed0025 RS |
787 | getwd (char *dir) |
788 | { | |
76b3903d | 789 | #if 0 |
480b0c5b GV |
790 | if (GetCurrentDirectory (MAXPATHLEN, dir) > 0) |
791 | return dir; | |
792 | return NULL; | |
76b3903d GV |
793 | #else |
794 | /* Emacs doesn't actually change directory itself, and we want to | |
795 | force our real wd to be where emacs.exe is to avoid unnecessary | |
796 | conflicts when trying to rename or delete directories. */ | |
797 | strcpy (dir, startup_dir); | |
798 | return dir; | |
799 | #endif | |
95ed0025 RS |
800 | } |
801 | ||
95ed0025 | 802 | /* Emulate getloadavg. */ |
ad9e2d54 EZ |
803 | |
804 | struct load_sample { | |
805 | time_t sample_time; | |
806 | ULONGLONG idle; | |
807 | ULONGLONG kernel; | |
808 | ULONGLONG user; | |
809 | }; | |
810 | ||
811 | /* Number of processors on this machine. */ | |
812 | static unsigned num_of_processors; | |
813 | ||
814 | /* We maintain 1-sec samples for the last 16 minutes in a circular buffer. */ | |
815 | static struct load_sample samples[16*60]; | |
816 | static int first_idx = -1, last_idx = -1; | |
817 | static int max_idx = sizeof (samples) / sizeof (samples[0]); | |
818 | ||
819 | static int | |
820 | buf_next (int from) | |
821 | { | |
822 | int next_idx = from + 1; | |
823 | ||
824 | if (next_idx >= max_idx) | |
825 | next_idx = 0; | |
826 | ||
827 | return next_idx; | |
828 | } | |
829 | ||
830 | static int | |
831 | buf_prev (int from) | |
832 | { | |
833 | int prev_idx = from - 1; | |
834 | ||
835 | if (prev_idx < 0) | |
836 | prev_idx = max_idx - 1; | |
837 | ||
838 | return prev_idx; | |
839 | } | |
840 | ||
841 | static void | |
842 | sample_system_load (ULONGLONG *idle, ULONGLONG *kernel, ULONGLONG *user) | |
843 | { | |
844 | SYSTEM_INFO sysinfo; | |
845 | FILETIME ft_idle, ft_user, ft_kernel; | |
846 | ||
847 | /* Initialize the number of processors on this machine. */ | |
848 | if (num_of_processors <= 0) | |
849 | { | |
850 | get_native_system_info (&sysinfo); | |
851 | num_of_processors = sysinfo.dwNumberOfProcessors; | |
852 | if (num_of_processors <= 0) | |
853 | { | |
854 | GetSystemInfo (&sysinfo); | |
855 | num_of_processors = sysinfo.dwNumberOfProcessors; | |
856 | } | |
857 | if (num_of_processors <= 0) | |
858 | num_of_processors = 1; | |
859 | } | |
860 | ||
861 | /* TODO: Take into account threads that are ready to run, by | |
862 | sampling the "\System\Processor Queue Length" performance | |
863 | counter. The code below accounts only for threads that are | |
864 | actually running. */ | |
865 | ||
866 | if (get_system_times (&ft_idle, &ft_kernel, &ft_user)) | |
867 | { | |
868 | ULARGE_INTEGER uidle, ukernel, uuser; | |
869 | ||
870 | memcpy (&uidle, &ft_idle, sizeof (ft_idle)); | |
871 | memcpy (&ukernel, &ft_kernel, sizeof (ft_kernel)); | |
872 | memcpy (&uuser, &ft_user, sizeof (ft_user)); | |
873 | *idle = uidle.QuadPart; | |
874 | *kernel = ukernel.QuadPart; | |
875 | *user = uuser.QuadPart; | |
876 | } | |
877 | else | |
878 | { | |
879 | *idle = 0; | |
880 | *kernel = 0; | |
881 | *user = 0; | |
882 | } | |
883 | } | |
884 | ||
885 | /* Produce the load average for a given time interval, using the | |
886 | samples in the samples[] array. WHICH can be 0, 1, or 2, meaning | |
887 | 1-minute, 5-minute, or 15-minute average, respectively. */ | |
888 | static double | |
889 | getavg (int which) | |
890 | { | |
891 | double retval = -1.0; | |
892 | double tdiff; | |
893 | int idx; | |
894 | double span = (which == 0 ? 1.0 : (which == 1 ? 5.0 : 15.0)) * 60; | |
895 | time_t now = samples[last_idx].sample_time; | |
896 | ||
897 | if (first_idx != last_idx) | |
898 | { | |
899 | for (idx = buf_prev (last_idx); ; idx = buf_prev (idx)) | |
900 | { | |
901 | tdiff = difftime (now, samples[idx].sample_time); | |
902 | if (tdiff >= span - 2*DBL_EPSILON*now) | |
903 | { | |
904 | long double sys = | |
905 | samples[last_idx].kernel + samples[last_idx].user | |
906 | - (samples[idx].kernel + samples[idx].user); | |
907 | long double idl = samples[last_idx].idle - samples[idx].idle; | |
908 | ||
909 | retval = (1.0 - idl / sys) * num_of_processors; | |
910 | break; | |
911 | } | |
912 | if (idx == first_idx) | |
913 | break; | |
914 | } | |
915 | } | |
916 | ||
917 | return retval; | |
918 | } | |
919 | ||
95ed0025 RS |
920 | int |
921 | getloadavg (double loadavg[], int nelem) | |
922 | { | |
ad9e2d54 EZ |
923 | int elem; |
924 | ULONGLONG idle, kernel, user; | |
925 | time_t now = time (NULL); | |
926 | ||
927 | /* Store another sample. We ignore samples that are less than 1 sec | |
928 | apart. */ | |
929 | if (difftime (now, samples[last_idx].sample_time) >= 1.0 - 2*DBL_EPSILON*now) | |
930 | { | |
931 | sample_system_load (&idle, &kernel, &user); | |
932 | last_idx = buf_next (last_idx); | |
933 | samples[last_idx].sample_time = now; | |
934 | samples[last_idx].idle = idle; | |
935 | samples[last_idx].kernel = kernel; | |
936 | samples[last_idx].user = user; | |
937 | /* If the buffer has more that 15 min worth of samples, discard | |
938 | the old ones. */ | |
939 | if (first_idx == -1) | |
940 | first_idx = last_idx; | |
941 | while (first_idx != last_idx | |
942 | && (difftime (now, samples[first_idx].sample_time) | |
943 | >= 15.0*60 + 2*DBL_EPSILON*now)) | |
944 | first_idx = buf_next (first_idx); | |
945 | } | |
95ed0025 | 946 | |
ad9e2d54 | 947 | for (elem = 0; elem < nelem; elem++) |
95ed0025 | 948 | { |
ad9e2d54 EZ |
949 | double avg = getavg (elem); |
950 | ||
951 | if (avg < 0) | |
952 | break; | |
953 | loadavg[elem] = avg; | |
95ed0025 | 954 | } |
ad9e2d54 EZ |
955 | |
956 | return elem; | |
95ed0025 RS |
957 | } |
958 | ||
480b0c5b | 959 | /* Emulate getpwuid, getpwnam and others. */ |
95ed0025 | 960 | |
051fe60d GV |
961 | #define PASSWD_FIELD_SIZE 256 |
962 | ||
07f7980a EZ |
963 | static char dflt_passwd_name[PASSWD_FIELD_SIZE]; |
964 | static char dflt_passwd_passwd[PASSWD_FIELD_SIZE]; | |
965 | static char dflt_passwd_gecos[PASSWD_FIELD_SIZE]; | |
966 | static char dflt_passwd_dir[PASSWD_FIELD_SIZE]; | |
967 | static char dflt_passwd_shell[PASSWD_FIELD_SIZE]; | |
95ed0025 | 968 | |
07f7980a | 969 | static struct passwd dflt_passwd = |
95ed0025 | 970 | { |
07f7980a EZ |
971 | dflt_passwd_name, |
972 | dflt_passwd_passwd, | |
95ed0025 RS |
973 | 0, |
974 | 0, | |
975 | 0, | |
07f7980a EZ |
976 | dflt_passwd_gecos, |
977 | dflt_passwd_dir, | |
978 | dflt_passwd_shell, | |
95ed0025 RS |
979 | }; |
980 | ||
07f7980a EZ |
981 | static char dflt_group_name[GNLEN+1]; |
982 | ||
983 | static struct group dflt_group = | |
3d19b645 | 984 | { |
07f7980a EZ |
985 | /* When group information is not available, we return this as the |
986 | group for all files. */ | |
987 | dflt_group_name, | |
988 | 0, | |
3d19b645 LH |
989 | }; |
990 | ||
22749e9a | 991 | unsigned |
b56ceb92 | 992 | getuid (void) |
177c0ea7 | 993 | { |
07f7980a | 994 | return dflt_passwd.pw_uid; |
480b0c5b GV |
995 | } |
996 | ||
22749e9a | 997 | unsigned |
b56ceb92 | 998 | geteuid (void) |
177c0ea7 | 999 | { |
480b0c5b GV |
1000 | /* I could imagine arguing for checking to see whether the user is |
1001 | in the Administrators group and returning a UID of 0 for that | |
1002 | case, but I don't know how wise that would be in the long run. */ | |
177c0ea7 | 1003 | return getuid (); |
480b0c5b GV |
1004 | } |
1005 | ||
22749e9a | 1006 | unsigned |
b56ceb92 | 1007 | getgid (void) |
177c0ea7 | 1008 | { |
07f7980a | 1009 | return dflt_passwd.pw_gid; |
480b0c5b GV |
1010 | } |
1011 | ||
22749e9a | 1012 | unsigned |
b56ceb92 | 1013 | getegid (void) |
177c0ea7 | 1014 | { |
480b0c5b GV |
1015 | return getgid (); |
1016 | } | |
1017 | ||
95ed0025 | 1018 | struct passwd * |
22749e9a | 1019 | getpwuid (unsigned uid) |
95ed0025 | 1020 | { |
07f7980a EZ |
1021 | if (uid == dflt_passwd.pw_uid) |
1022 | return &dflt_passwd; | |
480b0c5b | 1023 | return NULL; |
95ed0025 RS |
1024 | } |
1025 | ||
3d19b645 LH |
1026 | struct group * |
1027 | getgrgid (gid_t gid) | |
1028 | { | |
07f7980a | 1029 | return &dflt_group; |
3d19b645 LH |
1030 | } |
1031 | ||
95ed0025 RS |
1032 | struct passwd * |
1033 | getpwnam (char *name) | |
1034 | { | |
1035 | struct passwd *pw; | |
177c0ea7 | 1036 | |
95ed0025 RS |
1037 | pw = getpwuid (getuid ()); |
1038 | if (!pw) | |
1039 | return pw; | |
1040 | ||
05131107 | 1041 | if (xstrcasecmp (name, pw->pw_name)) |
95ed0025 RS |
1042 | return NULL; |
1043 | ||
1044 | return pw; | |
1045 | } | |
1046 | ||
bedf4aab | 1047 | static void |
b56ceb92 | 1048 | init_user_info (void) |
95ed0025 | 1049 | { |
480b0c5b GV |
1050 | /* Find the user's real name by opening the process token and |
1051 | looking up the name associated with the user-sid in that token. | |
1052 | ||
1053 | Use the relative portion of the identifier authority value from | |
1054 | the user-sid as the user id value (same for group id using the | |
1055 | primary group sid from the process token). */ | |
1056 | ||
07f7980a | 1057 | char uname[UNLEN+1], gname[GNLEN+1], domain[1025]; |
32cef06e | 1058 | DWORD ulength = sizeof (uname), dlength = sizeof (domain), needed; |
07f7980a | 1059 | DWORD glength = sizeof (gname); |
10aabbf9 JB |
1060 | HANDLE token = NULL; |
1061 | SID_NAME_USE user_type; | |
32cef06e EZ |
1062 | unsigned char *buf = NULL; |
1063 | DWORD blen = 0; | |
634d3003 EZ |
1064 | TOKEN_USER user_token; |
1065 | TOKEN_PRIMARY_GROUP group_token; | |
32cef06e | 1066 | BOOL result; |
10aabbf9 | 1067 | |
32cef06e EZ |
1068 | result = open_process_token (GetCurrentProcess (), TOKEN_QUERY, &token); |
1069 | if (result) | |
1070 | { | |
1071 | result = get_token_information (token, TokenUser, NULL, 0, &blen); | |
1072 | if (!result && GetLastError () == ERROR_INSUFFICIENT_BUFFER) | |
1073 | { | |
1074 | buf = xmalloc (blen); | |
1075 | result = get_token_information (token, TokenUser, | |
1076 | (LPVOID)buf, blen, &needed); | |
1077 | if (result) | |
1078 | { | |
1079 | memcpy (&user_token, buf, sizeof (user_token)); | |
1080 | result = lookup_account_sid (NULL, user_token.User.Sid, | |
1081 | uname, &ulength, | |
1082 | domain, &dlength, &user_type); | |
1083 | } | |
1084 | } | |
1085 | else | |
1086 | result = FALSE; | |
1087 | } | |
1088 | if (result) | |
d1c1c3d2 | 1089 | { |
07f7980a | 1090 | strcpy (dflt_passwd.pw_name, uname); |
c617afce | 1091 | /* Determine a reasonable uid value. */ |
05131107 | 1092 | if (xstrcasecmp ("administrator", uname) == 0) |
480b0c5b | 1093 | { |
07f7980a EZ |
1094 | dflt_passwd.pw_uid = 500; /* well-known Administrator uid */ |
1095 | dflt_passwd.pw_gid = 513; /* well-known None gid */ | |
480b0c5b GV |
1096 | } |
1097 | else | |
1098 | { | |
ce0ee994 EZ |
1099 | /* Use the last sub-authority value of the RID, the relative |
1100 | portion of the SID, as user/group ID. */ | |
8aaaec6b | 1101 | dflt_passwd.pw_uid = get_rid (user_token.User.Sid); |
480b0c5b | 1102 | |
8aaaec6b | 1103 | /* Get group id and name. */ |
32cef06e EZ |
1104 | result = get_token_information (token, TokenPrimaryGroup, |
1105 | (LPVOID)buf, blen, &needed); | |
1106 | if (!result && GetLastError () == ERROR_INSUFFICIENT_BUFFER) | |
1107 | { | |
1108 | buf = xrealloc (buf, blen = needed); | |
1109 | result = get_token_information (token, TokenPrimaryGroup, | |
1110 | (LPVOID)buf, blen, &needed); | |
1111 | } | |
1112 | if (result) | |
480b0c5b | 1113 | { |
634d3003 | 1114 | memcpy (&group_token, buf, sizeof (group_token)); |
8aaaec6b | 1115 | dflt_passwd.pw_gid = get_rid (group_token.PrimaryGroup); |
07f7980a | 1116 | dlength = sizeof (domain); |
32cef06e EZ |
1117 | /* If we can get at the real Primary Group name, use that. |
1118 | Otherwise, the default group name was already set to | |
1119 | "None" in globals_of_w32. */ | |
07f7980a EZ |
1120 | if (lookup_account_sid (NULL, group_token.PrimaryGroup, |
1121 | gname, &glength, NULL, &dlength, | |
1122 | &user_type)) | |
1123 | strcpy (dflt_group_name, gname); | |
480b0c5b GV |
1124 | } |
1125 | else | |
07f7980a | 1126 | dflt_passwd.pw_gid = dflt_passwd.pw_uid; |
480b0c5b GV |
1127 | } |
1128 | } | |
1129 | /* If security calls are not supported (presumably because we | |
32cef06e | 1130 | are running under Windows 9X), fallback to this: */ |
07f7980a | 1131 | else if (GetUserName (uname, &ulength)) |
480b0c5b | 1132 | { |
07f7980a | 1133 | strcpy (dflt_passwd.pw_name, uname); |
05131107 | 1134 | if (xstrcasecmp ("administrator", uname) == 0) |
07f7980a | 1135 | dflt_passwd.pw_uid = 0; |
480b0c5b | 1136 | else |
07f7980a EZ |
1137 | dflt_passwd.pw_uid = 123; |
1138 | dflt_passwd.pw_gid = dflt_passwd.pw_uid; | |
480b0c5b GV |
1139 | } |
1140 | else | |
1141 | { | |
07f7980a EZ |
1142 | strcpy (dflt_passwd.pw_name, "unknown"); |
1143 | dflt_passwd.pw_uid = 123; | |
1144 | dflt_passwd.pw_gid = 123; | |
d1c1c3d2 | 1145 | } |
07f7980a | 1146 | dflt_group.gr_gid = dflt_passwd.pw_gid; |
95ed0025 | 1147 | |
480b0c5b GV |
1148 | /* Ensure HOME and SHELL are defined. */ |
1149 | if (getenv ("HOME") == NULL) | |
ca149beb | 1150 | abort (); |
480b0c5b | 1151 | if (getenv ("SHELL") == NULL) |
ca149beb | 1152 | abort (); |
95ed0025 | 1153 | |
480b0c5b | 1154 | /* Set dir and shell from environment variables. */ |
07f7980a EZ |
1155 | strcpy (dflt_passwd.pw_dir, getenv ("HOME")); |
1156 | strcpy (dflt_passwd.pw_shell, getenv ("SHELL")); | |
bd4a449f | 1157 | |
32cef06e | 1158 | xfree (buf); |
480b0c5b GV |
1159 | if (token) |
1160 | CloseHandle (token); | |
95ed0025 RS |
1161 | } |
1162 | ||
95ed0025 | 1163 | int |
b56ceb92 | 1164 | random (void) |
95ed0025 | 1165 | { |
480b0c5b GV |
1166 | /* rand () on NT gives us 15 random bits...hack together 30 bits. */ |
1167 | return ((rand () << 15) | rand ()); | |
95ed0025 RS |
1168 | } |
1169 | ||
95ed0025 | 1170 | void |
480b0c5b | 1171 | srandom (int seed) |
95ed0025 | 1172 | { |
480b0c5b | 1173 | srand (seed); |
95ed0025 RS |
1174 | } |
1175 | ||
76b3903d | 1176 | |
cbe39279 RS |
1177 | /* Normalize filename by converting all path separators to |
1178 | the specified separator. Also conditionally convert upper | |
1179 | case path name components to lower case. */ | |
1180 | ||
1181 | static void | |
b56ceb92 | 1182 | normalize_filename (register char *fp, char path_sep) |
cbe39279 RS |
1183 | { |
1184 | char sep; | |
1185 | char *elem; | |
1186 | ||
5162ffce MB |
1187 | /* Always lower-case drive letters a-z, even if the filesystem |
1188 | preserves case in filenames. | |
1189 | This is so filenames can be compared by string comparison | |
1190 | functions that are case-sensitive. Even case-preserving filesystems | |
1191 | do not distinguish case in drive letters. */ | |
1192 | if (fp[1] == ':' && *fp >= 'A' && *fp <= 'Z') | |
1193 | { | |
1194 | *fp += 'a' - 'A'; | |
1195 | fp += 2; | |
1196 | } | |
1197 | ||
fbd6baed | 1198 | if (NILP (Vw32_downcase_file_names)) |
cbe39279 RS |
1199 | { |
1200 | while (*fp) | |
1201 | { | |
1202 | if (*fp == '/' || *fp == '\\') | |
1203 | *fp = path_sep; | |
1204 | fp++; | |
1205 | } | |
1206 | return; | |
1207 | } | |
1208 | ||
1209 | sep = path_sep; /* convert to this path separator */ | |
1210 | elem = fp; /* start of current path element */ | |
1211 | ||
1212 | do { | |
1213 | if (*fp >= 'a' && *fp <= 'z') | |
1214 | elem = 0; /* don't convert this element */ | |
1215 | ||
1216 | if (*fp == 0 || *fp == ':') | |
1217 | { | |
1218 | sep = *fp; /* restore current separator (or 0) */ | |
1219 | *fp = '/'; /* after conversion of this element */ | |
1220 | } | |
1221 | ||
1222 | if (*fp == '/' || *fp == '\\') | |
1223 | { | |
1224 | if (elem && elem != fp) | |
1225 | { | |
1226 | *fp = 0; /* temporary end of string */ | |
1227 | _strlwr (elem); /* while we convert to lower case */ | |
1228 | } | |
1229 | *fp = sep; /* convert (or restore) path separator */ | |
1230 | elem = fp + 1; /* next element starts after separator */ | |
1231 | sep = path_sep; | |
1232 | } | |
1233 | } while (*fp++); | |
1234 | } | |
1235 | ||
480b0c5b | 1236 | /* Destructively turn backslashes into slashes. */ |
95ed0025 | 1237 | void |
b56ceb92 | 1238 | dostounix_filename (register char *p) |
95ed0025 | 1239 | { |
cbe39279 | 1240 | normalize_filename (p, '/'); |
95ed0025 RS |
1241 | } |
1242 | ||
480b0c5b | 1243 | /* Destructively turn slashes into backslashes. */ |
95ed0025 | 1244 | void |
b56ceb92 | 1245 | unixtodos_filename (register char *p) |
95ed0025 | 1246 | { |
cbe39279 | 1247 | normalize_filename (p, '\\'); |
95ed0025 RS |
1248 | } |
1249 | ||
480b0c5b GV |
1250 | /* Remove all CR's that are followed by a LF. |
1251 | (From msdos.c...probably should figure out a way to share it, | |
1252 | although this code isn't going to ever change.) */ | |
bedf4aab | 1253 | static int |
b56ceb92 | 1254 | crlf_to_lf (register int n, register unsigned char *buf) |
35f0d482 | 1255 | { |
480b0c5b GV |
1256 | unsigned char *np = buf; |
1257 | unsigned char *startp = buf; | |
1258 | unsigned char *endp = buf + n; | |
35f0d482 | 1259 | |
480b0c5b GV |
1260 | if (n == 0) |
1261 | return n; | |
1262 | while (buf < endp - 1) | |
95ed0025 | 1263 | { |
480b0c5b GV |
1264 | if (*buf == 0x0d) |
1265 | { | |
1266 | if (*(++buf) != 0x0a) | |
1267 | *np++ = 0x0d; | |
1268 | } | |
1269 | else | |
1270 | *np++ = *buf++; | |
95ed0025 | 1271 | } |
480b0c5b GV |
1272 | if (buf < endp) |
1273 | *np++ = *buf++; | |
1274 | return np - startp; | |
95ed0025 RS |
1275 | } |
1276 | ||
76b3903d GV |
1277 | /* Parse the root part of file name, if present. Return length and |
1278 | optionally store pointer to char after root. */ | |
1279 | static int | |
1280 | parse_root (char * name, char ** pPath) | |
1281 | { | |
1282 | char * start = name; | |
1283 | ||
1284 | if (name == NULL) | |
1285 | return 0; | |
1286 | ||
1287 | /* find the root name of the volume if given */ | |
1288 | if (isalpha (name[0]) && name[1] == ':') | |
1289 | { | |
1290 | /* skip past drive specifier */ | |
1291 | name += 2; | |
1292 | if (IS_DIRECTORY_SEP (name[0])) | |
1293 | name++; | |
1294 | } | |
1295 | else if (IS_DIRECTORY_SEP (name[0]) && IS_DIRECTORY_SEP (name[1])) | |
1296 | { | |
1297 | int slashes = 2; | |
1298 | name += 2; | |
1299 | do | |
1300 | { | |
1301 | if (IS_DIRECTORY_SEP (*name) && --slashes == 0) | |
1302 | break; | |
1303 | name++; | |
1304 | } | |
1305 | while ( *name ); | |
1306 | if (IS_DIRECTORY_SEP (name[0])) | |
1307 | name++; | |
1308 | } | |
1309 | ||
1310 | if (pPath) | |
1311 | *pPath = name; | |
1312 | ||
1313 | return name - start; | |
1314 | } | |
1315 | ||
1316 | /* Get long base name for name; name is assumed to be absolute. */ | |
1317 | static int | |
1318 | get_long_basename (char * name, char * buf, int size) | |
1319 | { | |
1320 | WIN32_FIND_DATA find_data; | |
1321 | HANDLE dir_handle; | |
1322 | int len = 0; | |
1323 | ||
9ab8560d | 1324 | /* must be valid filename, no wild cards or other invalid characters */ |
22189f79 | 1325 | if (_mbspbrk (name, "*?|<>\"")) |
bb1584c8 RS |
1326 | return 0; |
1327 | ||
76b3903d GV |
1328 | dir_handle = FindFirstFile (name, &find_data); |
1329 | if (dir_handle != INVALID_HANDLE_VALUE) | |
1330 | { | |
1331 | if ((len = strlen (find_data.cFileName)) < size) | |
1332 | memcpy (buf, find_data.cFileName, len + 1); | |
1333 | else | |
1334 | len = 0; | |
1335 | FindClose (dir_handle); | |
1336 | } | |
1337 | return len; | |
1338 | } | |
1339 | ||
1340 | /* Get long name for file, if possible (assumed to be absolute). */ | |
1341 | BOOL | |
1342 | w32_get_long_filename (char * name, char * buf, int size) | |
1343 | { | |
1344 | char * o = buf; | |
1345 | char * p; | |
1346 | char * q; | |
1347 | char full[ MAX_PATH ]; | |
1348 | int len; | |
1349 | ||
1350 | len = strlen (name); | |
1351 | if (len >= MAX_PATH) | |
1352 | return FALSE; | |
1353 | ||
1354 | /* Use local copy for destructive modification. */ | |
1355 | memcpy (full, name, len+1); | |
1356 | unixtodos_filename (full); | |
1357 | ||
1358 | /* Copy root part verbatim. */ | |
1359 | len = parse_root (full, &p); | |
1360 | memcpy (o, full, len); | |
1361 | o += len; | |
4f8ac0b2 | 1362 | *o = '\0'; |
76b3903d GV |
1363 | size -= len; |
1364 | ||
4f8ac0b2 | 1365 | while (p != NULL && *p) |
76b3903d GV |
1366 | { |
1367 | q = p; | |
1368 | p = strchr (q, '\\'); | |
1369 | if (p) *p = '\0'; | |
1370 | len = get_long_basename (full, o, size); | |
1371 | if (len > 0) | |
1372 | { | |
1373 | o += len; | |
1374 | size -= len; | |
1375 | if (p != NULL) | |
1376 | { | |
1377 | *p++ = '\\'; | |
1378 | if (size < 2) | |
1379 | return FALSE; | |
1380 | *o++ = '\\'; | |
1381 | size--; | |
1382 | *o = '\0'; | |
1383 | } | |
1384 | } | |
1385 | else | |
1386 | return FALSE; | |
1387 | } | |
76b3903d GV |
1388 | |
1389 | return TRUE; | |
1390 | } | |
1391 | ||
bedf4aab | 1392 | static int |
9d3355d1 GV |
1393 | is_unc_volume (const char *filename) |
1394 | { | |
1395 | const char *ptr = filename; | |
1396 | ||
1397 | if (!IS_DIRECTORY_SEP (ptr[0]) || !IS_DIRECTORY_SEP (ptr[1]) || !ptr[2]) | |
1398 | return 0; | |
1399 | ||
22189f79 | 1400 | if (_mbspbrk (ptr + 2, "*?|<>\"\\/")) |
9d3355d1 GV |
1401 | return 0; |
1402 | ||
1403 | return 1; | |
1404 | } | |
76b3903d | 1405 | |
95ed0025 RS |
1406 | /* Routines that are no-ops on NT but are defined to get Emacs to compile. */ |
1407 | ||
177c0ea7 JB |
1408 | int |
1409 | sigsetmask (int signal_mask) | |
1410 | { | |
95ed0025 RS |
1411 | return 0; |
1412 | } | |
1413 | ||
177c0ea7 JB |
1414 | int |
1415 | sigmask (int sig) | |
1416 | { | |
8f900f6e AI |
1417 | return 0; |
1418 | } | |
1419 | ||
177c0ea7 JB |
1420 | int |
1421 | sigblock (int sig) | |
1422 | { | |
95ed0025 RS |
1423 | return 0; |
1424 | } | |
1425 | ||
177c0ea7 JB |
1426 | int |
1427 | sigunblock (int sig) | |
1428 | { | |
8f900f6e AI |
1429 | return 0; |
1430 | } | |
1431 | ||
d6dae14b EZ |
1432 | int |
1433 | sigemptyset (sigset_t *set) | |
1434 | { | |
1435 | return 0; | |
1436 | } | |
1437 | ||
1438 | int | |
1439 | sigaddset (sigset_t *set, int signo) | |
1440 | { | |
1441 | return 0; | |
1442 | } | |
1443 | ||
1444 | int | |
1445 | sigfillset (sigset_t *set) | |
1446 | { | |
1447 | return 0; | |
1448 | } | |
1449 | ||
1450 | int | |
1451 | sigprocmask (int how, const sigset_t *set, sigset_t *oset) | |
1452 | { | |
1453 | return 0; | |
1454 | } | |
1455 | ||
8278c4fe EZ |
1456 | int |
1457 | pthread_sigmask (int how, const sigset_t *set, sigset_t *oset) | |
1458 | { | |
1459 | if (sigprocmask (how, set, oset) == -1) | |
1460 | return EINVAL; | |
1461 | return 0; | |
1462 | } | |
1463 | ||
177c0ea7 JB |
1464 | int |
1465 | setpgrp (int pid, int gid) | |
1466 | { | |
95ed0025 RS |
1467 | return 0; |
1468 | } | |
1469 | ||
177c0ea7 JB |
1470 | int |
1471 | alarm (int seconds) | |
1472 | { | |
95ed0025 RS |
1473 | return 0; |
1474 | } | |
1475 | ||
480b0c5b | 1476 | #define REG_ROOT "SOFTWARE\\GNU\\Emacs" |
f332b293 | 1477 | |
177c0ea7 | 1478 | LPBYTE |
b56ceb92 | 1479 | w32_get_resource (char *key, LPDWORD lpdwtype) |
f332b293 GV |
1480 | { |
1481 | LPBYTE lpvalue; | |
1482 | HKEY hrootkey = NULL; | |
1483 | DWORD cbData; | |
177c0ea7 JB |
1484 | |
1485 | /* Check both the current user and the local machine to see if | |
f332b293 | 1486 | we have any resources. */ |
177c0ea7 | 1487 | |
f332b293 GV |
1488 | if (RegOpenKeyEx (HKEY_CURRENT_USER, REG_ROOT, 0, KEY_READ, &hrootkey) == ERROR_SUCCESS) |
1489 | { | |
1490 | lpvalue = NULL; | |
1491 | ||
177c0ea7 JB |
1492 | if (RegQueryValueEx (hrootkey, key, NULL, NULL, NULL, &cbData) == ERROR_SUCCESS |
1493 | && (lpvalue = (LPBYTE) xmalloc (cbData)) != NULL | |
f332b293 GV |
1494 | && RegQueryValueEx (hrootkey, key, NULL, lpdwtype, lpvalue, &cbData) == ERROR_SUCCESS) |
1495 | { | |
4da4d9bb | 1496 | RegCloseKey (hrootkey); |
f332b293 GV |
1497 | return (lpvalue); |
1498 | } | |
1499 | ||
70fdbb46 | 1500 | xfree (lpvalue); |
177c0ea7 | 1501 | |
f332b293 | 1502 | RegCloseKey (hrootkey); |
177c0ea7 JB |
1503 | } |
1504 | ||
f332b293 GV |
1505 | if (RegOpenKeyEx (HKEY_LOCAL_MACHINE, REG_ROOT, 0, KEY_READ, &hrootkey) == ERROR_SUCCESS) |
1506 | { | |
1507 | lpvalue = NULL; | |
177c0ea7 | 1508 | |
76b3903d GV |
1509 | if (RegQueryValueEx (hrootkey, key, NULL, NULL, NULL, &cbData) == ERROR_SUCCESS |
1510 | && (lpvalue = (LPBYTE) xmalloc (cbData)) != NULL | |
1511 | && RegQueryValueEx (hrootkey, key, NULL, lpdwtype, lpvalue, &cbData) == ERROR_SUCCESS) | |
f332b293 | 1512 | { |
4da4d9bb | 1513 | RegCloseKey (hrootkey); |
f332b293 GV |
1514 | return (lpvalue); |
1515 | } | |
177c0ea7 | 1516 | |
70fdbb46 | 1517 | xfree (lpvalue); |
177c0ea7 | 1518 | |
f332b293 | 1519 | RegCloseKey (hrootkey); |
177c0ea7 JB |
1520 | } |
1521 | ||
f332b293 GV |
1522 | return (NULL); |
1523 | } | |
1524 | ||
75b08edb | 1525 | char *get_emacs_configuration (void); |
94eab1c8 | 1526 | |
f332b293 | 1527 | void |
aa7b87b0 | 1528 | init_environment (char ** argv) |
f332b293 | 1529 | { |
b3308d2e KH |
1530 | static const char * const tempdirs[] = { |
1531 | "$TMPDIR", "$TEMP", "$TMP", "c:/" | |
1532 | }; | |
2d5324c5 | 1533 | |
b3308d2e | 1534 | int i; |
2d5324c5 | 1535 | |
b3308d2e KH |
1536 | const int imax = sizeof (tempdirs) / sizeof (tempdirs[0]); |
1537 | ||
1538 | /* Make sure they have a usable $TMPDIR. Many Emacs functions use | |
1539 | temporary files and assume "/tmp" if $TMPDIR is unset, which | |
1540 | will break on DOS/Windows. Refuse to work if we cannot find | |
1541 | a directory, not even "c:/", usable for that purpose. */ | |
1542 | for (i = 0; i < imax ; i++) | |
1543 | { | |
1544 | const char *tmp = tempdirs[i]; | |
1545 | ||
1546 | if (*tmp == '$') | |
1547 | tmp = getenv (tmp + 1); | |
1548 | /* Note that `access' can lie to us if the directory resides on a | |
1549 | read-only filesystem, like CD-ROM or a write-protected floppy. | |
1550 | The only way to be really sure is to actually create a file and | |
1551 | see if it succeeds. But I think that's too much to ask. */ | |
a6fc3b5c EZ |
1552 | #ifdef _MSC_VER |
1553 | /* MSVC's _access crashes with D_OK. */ | |
1554 | if (tmp && sys_access (tmp, D_OK) == 0) | |
1555 | #else | |
a302c7ae | 1556 | if (tmp && _access (tmp, D_OK) == 0) |
a6fc3b5c | 1557 | #endif |
b3308d2e KH |
1558 | { |
1559 | char * var = alloca (strlen (tmp) + 8); | |
1560 | sprintf (var, "TMPDIR=%s", tmp); | |
aca583b2 | 1561 | _putenv (strdup (var)); |
b3308d2e KH |
1562 | break; |
1563 | } | |
1564 | } | |
1565 | if (i >= imax) | |
1566 | cmd_error_internal | |
1567 | (Fcons (Qerror, | |
1568 | Fcons (build_string ("no usable temporary directories found!!"), | |
1569 | Qnil)), | |
1570 | "While setting TMPDIR: "); | |
1571 | ||
ca149beb AI |
1572 | /* Check for environment variables and use registry settings if they |
1573 | don't exist. Fallback on default values where applicable. */ | |
f332b293 | 1574 | { |
480b0c5b GV |
1575 | int i; |
1576 | LPBYTE lpval; | |
1577 | DWORD dwType; | |
69fb0241 | 1578 | char locale_name[32]; |
2d5324c5 JR |
1579 | struct stat ignored; |
1580 | char default_home[MAX_PATH]; | |
fdc5744d | 1581 | int appdata = 0; |
f332b293 | 1582 | |
e00b99c8 | 1583 | static const struct env_entry |
ca149beb AI |
1584 | { |
1585 | char * name; | |
1586 | char * def_value; | |
e00b99c8 | 1587 | } dflt_envvars[] = |
ca149beb AI |
1588 | { |
1589 | {"HOME", "C:/"}, | |
1590 | {"PRELOAD_WINSOCK", NULL}, | |
1591 | {"emacs_dir", "C:/emacs"}, | |
cc14250a | 1592 | {"EMACSLOADPATH", "%emacs_dir%/site-lisp;%emacs_dir%/../site-lisp;%emacs_dir%/lisp;%emacs_dir%/leim"}, |
ca149beb AI |
1593 | {"SHELL", "%emacs_dir%/bin/cmdproxy.exe"}, |
1594 | {"EMACSDATA", "%emacs_dir%/etc"}, | |
1595 | {"EMACSPATH", "%emacs_dir%/bin"}, | |
76b3903d | 1596 | /* We no longer set INFOPATH because Info-default-directory-list |
ca149beb AI |
1597 | is then ignored. */ |
1598 | /* {"INFOPATH", "%emacs_dir%/info"}, */ | |
1599 | {"EMACSDOC", "%emacs_dir%/etc"}, | |
69fb0241 JR |
1600 | {"TERM", "cmd"}, |
1601 | {"LANG", NULL}, | |
480b0c5b GV |
1602 | }; |
1603 | ||
ed3751c8 | 1604 | #define N_ENV_VARS sizeof (dflt_envvars)/sizeof (dflt_envvars[0]) |
e00b99c8 EZ |
1605 | |
1606 | /* We need to copy dflt_envvars[] and work on the copy because we | |
1607 | don't want the dumped Emacs to inherit the values of | |
1608 | environment variables we saw during dumping (which could be on | |
1609 | a different system). The defaults above must be left intact. */ | |
1610 | struct env_entry env_vars[N_ENV_VARS]; | |
1611 | ||
1612 | for (i = 0; i < N_ENV_VARS; i++) | |
1613 | env_vars[i] = dflt_envvars[i]; | |
1614 | ||
2d5324c5 JR |
1615 | /* For backwards compatibility, check if a .emacs file exists in C:/ |
1616 | If not, then we can try to default to the appdata directory under the | |
1617 | user's profile, which is more likely to be writable. */ | |
1618 | if (stat ("C:/.emacs", &ignored) < 0) | |
94eab1c8 JB |
1619 | { |
1620 | HRESULT profile_result; | |
1621 | /* Dynamically load ShGetFolderPath, as it won't exist on versions | |
1622 | of Windows 95 and NT4 that have not been updated to include | |
1623 | MSIE 5. */ | |
1624 | ShGetFolderPath_fn get_folder_path; | |
1625 | get_folder_path = (ShGetFolderPath_fn) | |
1626 | GetProcAddress (GetModuleHandle ("shell32.dll"), "SHGetFolderPathA"); | |
1627 | ||
1628 | if (get_folder_path != NULL) | |
1629 | { | |
1630 | profile_result = get_folder_path (NULL, CSIDL_APPDATA, NULL, | |
1631 | 0, default_home); | |
2d5324c5 | 1632 | |
94eab1c8 JB |
1633 | /* If we can't get the appdata dir, revert to old behavior. */ |
1634 | if (profile_result == S_OK) | |
fdc5744d JB |
1635 | { |
1636 | env_vars[0].def_value = default_home; | |
1637 | appdata = 1; | |
1638 | } | |
94eab1c8 JB |
1639 | } |
1640 | } | |
2d5324c5 | 1641 | |
69fb0241 JR |
1642 | /* Get default locale info and use it for LANG. */ |
1643 | if (GetLocaleInfo (LOCALE_USER_DEFAULT, | |
1644 | LOCALE_SABBREVLANGNAME | LOCALE_USE_CP_ACP, | |
1645 | locale_name, sizeof (locale_name))) | |
1646 | { | |
e00b99c8 | 1647 | for (i = 0; i < N_ENV_VARS; i++) |
69fb0241 JR |
1648 | { |
1649 | if (strcmp (env_vars[i].name, "LANG") == 0) | |
1650 | { | |
1651 | env_vars[i].def_value = locale_name; | |
1652 | break; | |
1653 | } | |
1654 | } | |
1655 | } | |
1656 | ||
ca149beb AI |
1657 | #define SET_ENV_BUF_SIZE (4 * MAX_PATH) /* to cover EMACSLOADPATH */ |
1658 | ||
1659 | /* Treat emacs_dir specially: set it unconditionally based on our | |
1660 | location, if it appears that we are running from the bin subdir | |
1661 | of a standard installation. */ | |
1662 | { | |
1663 | char *p; | |
1664 | char modname[MAX_PATH]; | |
1665 | ||
1666 | if (!GetModuleFileName (NULL, modname, MAX_PATH)) | |
1667 | abort (); | |
1668 | if ((p = strrchr (modname, '\\')) == NULL) | |
1669 | abort (); | |
1670 | *p = 0; | |
1671 | ||
05131107 | 1672 | if ((p = strrchr (modname, '\\')) && xstrcasecmp (p, "\\bin") == 0) |
ca149beb AI |
1673 | { |
1674 | char buf[SET_ENV_BUF_SIZE]; | |
1675 | ||
1676 | *p = 0; | |
1677 | for (p = modname; *p; p++) | |
1678 | if (*p == '\\') *p = '/'; | |
177c0ea7 | 1679 | |
ed3751c8 | 1680 | _snprintf (buf, sizeof (buf)-1, "emacs_dir=%s", modname); |
a302c7ae | 1681 | _putenv (strdup (buf)); |
ca149beb | 1682 | } |
950090be JR |
1683 | /* Handle running emacs from the build directory: src/oo-spd/i386/ */ |
1684 | ||
1685 | /* FIXME: should use substring of get_emacs_configuration (). | |
1686 | But I don't think the Windows build supports alpha, mips etc | |
1687 | anymore, so have taken the easy option for now. */ | |
05131107 | 1688 | else if (p && xstrcasecmp (p, "\\i386") == 0) |
950090be JR |
1689 | { |
1690 | *p = 0; | |
1691 | p = strrchr (modname, '\\'); | |
1692 | if (p != NULL) | |
1693 | { | |
1694 | *p = 0; | |
1695 | p = strrchr (modname, '\\'); | |
05131107 | 1696 | if (p && xstrcasecmp (p, "\\src") == 0) |
950090be JR |
1697 | { |
1698 | char buf[SET_ENV_BUF_SIZE]; | |
1699 | ||
1700 | *p = 0; | |
1701 | for (p = modname; *p; p++) | |
1702 | if (*p == '\\') *p = '/'; | |
1703 | ||
ed3751c8 | 1704 | _snprintf (buf, sizeof (buf)-1, "emacs_dir=%s", modname); |
950090be JR |
1705 | _putenv (strdup (buf)); |
1706 | } | |
1707 | } | |
1708 | } | |
ca149beb AI |
1709 | } |
1710 | ||
e00b99c8 | 1711 | for (i = 0; i < N_ENV_VARS; i++) |
f332b293 | 1712 | { |
ca149beb | 1713 | if (!getenv (env_vars[i].name)) |
480b0c5b | 1714 | { |
ca149beb | 1715 | int dont_free = 0; |
480b0c5b | 1716 | |
aa5ee2a3 JB |
1717 | if ((lpval = w32_get_resource (env_vars[i].name, &dwType)) == NULL |
1718 | /* Also ignore empty environment variables. */ | |
1719 | || *lpval == 0) | |
ca149beb | 1720 | { |
70fdbb46 | 1721 | xfree (lpval); |
ca149beb AI |
1722 | lpval = env_vars[i].def_value; |
1723 | dwType = REG_EXPAND_SZ; | |
1724 | dont_free = 1; | |
fdc5744d JB |
1725 | if (!strcmp (env_vars[i].name, "HOME") && !appdata) |
1726 | { | |
1727 | Lisp_Object warning[2]; | |
1728 | warning[0] = intern ("initialization"); | |
1729 | warning[1] = build_string ("Setting HOME to C:\\ by default is deprecated"); | |
1730 | Vdelayed_warnings_list = Fcons (Flist (2, warning), | |
1731 | Vdelayed_warnings_list); | |
1732 | } | |
480b0c5b | 1733 | } |
ca149beb AI |
1734 | |
1735 | if (lpval) | |
480b0c5b | 1736 | { |
892eb237 | 1737 | char buf1[SET_ENV_BUF_SIZE], buf2[SET_ENV_BUF_SIZE]; |
ca149beb | 1738 | |
892eb237 | 1739 | if (dwType == REG_EXPAND_SZ) |
ed3751c8 | 1740 | ExpandEnvironmentStrings ((LPSTR) lpval, buf1, sizeof (buf1)); |
ca149beb | 1741 | else if (dwType == REG_SZ) |
892eb237 EZ |
1742 | strcpy (buf1, lpval); |
1743 | if (dwType == REG_EXPAND_SZ || dwType == REG_SZ) | |
ca149beb | 1744 | { |
ed3751c8 | 1745 | _snprintf (buf2, sizeof (buf2)-1, "%s=%s", env_vars[i].name, |
892eb237 EZ |
1746 | buf1); |
1747 | _putenv (strdup (buf2)); | |
ca149beb | 1748 | } |
f332b293 | 1749 | |
ca149beb AI |
1750 | if (!dont_free) |
1751 | xfree (lpval); | |
1752 | } | |
480b0c5b GV |
1753 | } |
1754 | } | |
1755 | } | |
1756 | ||
75b08edb GV |
1757 | /* Rebuild system configuration to reflect invoking system. */ |
1758 | Vsystem_configuration = build_string (EMACS_CONFIGURATION); | |
1759 | ||
76b3903d GV |
1760 | /* Another special case: on NT, the PATH variable is actually named |
1761 | "Path" although cmd.exe (perhaps NT itself) arranges for | |
1762 | environment variable lookup and setting to be case insensitive. | |
1763 | However, Emacs assumes a fully case sensitive environment, so we | |
1764 | need to change "Path" to "PATH" to match the expectations of | |
1765 | various elisp packages. We do this by the sneaky method of | |
1766 | modifying the string in the C runtime environ entry. | |
1767 | ||
1768 | The same applies to COMSPEC. */ | |
1769 | { | |
1770 | char ** envp; | |
1771 | ||
1772 | for (envp = environ; *envp; envp++) | |
1773 | if (_strnicmp (*envp, "PATH=", 5) == 0) | |
1774 | memcpy (*envp, "PATH=", 5); | |
1775 | else if (_strnicmp (*envp, "COMSPEC=", 8) == 0) | |
1776 | memcpy (*envp, "COMSPEC=", 8); | |
1777 | } | |
1778 | ||
1779 | /* Remember the initial working directory for getwd, then make the | |
1780 | real wd be the location of emacs.exe to avoid conflicts when | |
1781 | renaming or deleting directories. (We also don't call chdir when | |
1782 | running subprocesses for the same reason.) */ | |
1783 | if (!GetCurrentDirectory (MAXPATHLEN, startup_dir)) | |
1784 | abort (); | |
1785 | ||
1786 | { | |
1787 | char *p; | |
aa7b87b0 | 1788 | static char modname[MAX_PATH]; |
76b3903d GV |
1789 | |
1790 | if (!GetModuleFileName (NULL, modname, MAX_PATH)) | |
1791 | abort (); | |
1792 | if ((p = strrchr (modname, '\\')) == NULL) | |
1793 | abort (); | |
1794 | *p = 0; | |
1795 | ||
1796 | SetCurrentDirectory (modname); | |
aa7b87b0 AI |
1797 | |
1798 | /* Ensure argv[0] has the full path to Emacs. */ | |
1799 | *p = '\\'; | |
1800 | argv[0] = modname; | |
76b3903d GV |
1801 | } |
1802 | ||
20af4831 JR |
1803 | /* Determine if there is a middle mouse button, to allow parse_button |
1804 | to decide whether right mouse events should be mouse-2 or | |
1805 | mouse-3. */ | |
e0c181dd | 1806 | w32_num_mouse_buttons = GetSystemMetrics (SM_CMOUSEBUTTONS); |
20af4831 | 1807 | |
480b0c5b GV |
1808 | init_user_info (); |
1809 | } | |
1810 | ||
bf794306 EZ |
1811 | char * |
1812 | emacs_root_dir (void) | |
1813 | { | |
1814 | static char root_dir[FILENAME_MAX]; | |
1815 | const char *p; | |
1816 | ||
1817 | p = getenv ("emacs_dir"); | |
1818 | if (p == NULL) | |
1819 | abort (); | |
1820 | strcpy (root_dir, p); | |
1821 | root_dir[parse_root (root_dir, NULL)] = '\0'; | |
1822 | dostounix_filename (root_dir); | |
1823 | return root_dir; | |
1824 | } | |
1825 | ||
480b0c5b GV |
1826 | /* We don't have scripts to automatically determine the system configuration |
1827 | for Emacs before it's compiled, and we don't want to have to make the | |
1828 | user enter it, so we define EMACS_CONFIGURATION to invoke this runtime | |
1829 | routine. */ | |
1830 | ||
480b0c5b GV |
1831 | char * |
1832 | get_emacs_configuration (void) | |
1833 | { | |
1834 | char *arch, *oem, *os; | |
c5247da2 | 1835 | int build_num; |
a302c7ae | 1836 | static char configuration_buffer[32]; |
480b0c5b GV |
1837 | |
1838 | /* Determine the processor type. */ | |
177c0ea7 | 1839 | switch (get_processor_type ()) |
480b0c5b GV |
1840 | { |
1841 | ||
1842 | #ifdef PROCESSOR_INTEL_386 | |
1843 | case PROCESSOR_INTEL_386: | |
1844 | case PROCESSOR_INTEL_486: | |
1845 | case PROCESSOR_INTEL_PENTIUM: | |
1846 | arch = "i386"; | |
1847 | break; | |
1848 | #endif | |
1849 | ||
480b0c5b GV |
1850 | #ifdef PROCESSOR_MIPS_R2000 |
1851 | case PROCESSOR_MIPS_R2000: | |
1852 | case PROCESSOR_MIPS_R3000: | |
1853 | case PROCESSOR_MIPS_R4000: | |
1854 | arch = "mips"; | |
1855 | break; | |
1856 | #endif | |
1857 | ||
1858 | #ifdef PROCESSOR_ALPHA_21064 | |
1859 | case PROCESSOR_ALPHA_21064: | |
1860 | arch = "alpha"; | |
1861 | break; | |
1862 | #endif | |
1863 | ||
1864 | default: | |
1865 | arch = "unknown"; | |
1866 | break; | |
f332b293 | 1867 | } |
480b0c5b | 1868 | |
a302c7ae AI |
1869 | /* Use the OEM field to reflect the compiler/library combination. */ |
1870 | #ifdef _MSC_VER | |
1871 | #define COMPILER_NAME "msvc" | |
1872 | #else | |
1873 | #ifdef __GNUC__ | |
1874 | #define COMPILER_NAME "mingw" | |
1875 | #else | |
1876 | #define COMPILER_NAME "unknown" | |
1877 | #endif | |
1878 | #endif | |
1879 | oem = COMPILER_NAME; | |
480b0c5b | 1880 | |
c5247da2 GV |
1881 | switch (osinfo_cache.dwPlatformId) { |
1882 | case VER_PLATFORM_WIN32_NT: | |
1883 | os = "nt"; | |
1884 | build_num = osinfo_cache.dwBuildNumber; | |
1885 | break; | |
1886 | case VER_PLATFORM_WIN32_WINDOWS: | |
1887 | if (osinfo_cache.dwMinorVersion == 0) { | |
1888 | os = "windows95"; | |
1889 | } else { | |
1890 | os = "windows98"; | |
1891 | } | |
1892 | build_num = LOWORD (osinfo_cache.dwBuildNumber); | |
1893 | break; | |
1894 | case VER_PLATFORM_WIN32s: | |
1895 | /* Not supported, should not happen. */ | |
1896 | os = "windows32s"; | |
1897 | build_num = LOWORD (osinfo_cache.dwBuildNumber); | |
1898 | break; | |
1899 | default: | |
1900 | os = "unknown"; | |
1901 | build_num = 0; | |
1902 | break; | |
1903 | } | |
1904 | ||
1905 | if (osinfo_cache.dwPlatformId == VER_PLATFORM_WIN32_NT) { | |
1906 | sprintf (configuration_buffer, "%s-%s-%s%d.%d.%d", arch, oem, os, | |
1907 | get_w32_major_version (), get_w32_minor_version (), build_num); | |
1908 | } else { | |
1909 | sprintf (configuration_buffer, "%s-%s-%s.%d", arch, oem, os, build_num); | |
1910 | } | |
480b0c5b | 1911 | |
480b0c5b | 1912 | return configuration_buffer; |
f332b293 GV |
1913 | } |
1914 | ||
a302c7ae AI |
1915 | char * |
1916 | get_emacs_configuration_options (void) | |
1917 | { | |
38c54d9d JB |
1918 | static char *options_buffer; |
1919 | char cv[32]; /* Enough for COMPILER_VERSION. */ | |
1920 | char *options[] = { | |
1921 | cv, /* To be filled later. */ | |
1922 | #ifdef EMACSDEBUG | |
1923 | " --no-opt", | |
1924 | #endif | |
1925 | /* configure.bat already sets USER_CFLAGS and USER_LDFLAGS | |
1926 | with a starting space to save work here. */ | |
1927 | #ifdef USER_CFLAGS | |
1928 | " --cflags", USER_CFLAGS, | |
1929 | #endif | |
1930 | #ifdef USER_LDFLAGS | |
1931 | " --ldflags", USER_LDFLAGS, | |
1932 | #endif | |
1933 | NULL | |
1934 | }; | |
1935 | size_t size = 0; | |
1936 | int i; | |
a302c7ae AI |
1937 | |
1938 | /* Work out the effective configure options for this build. */ | |
1939 | #ifdef _MSC_VER | |
1940 | #define COMPILER_VERSION "--with-msvc (%d.%02d)", _MSC_VER / 100, _MSC_VER % 100 | |
1941 | #else | |
1942 | #ifdef __GNUC__ | |
1943 | #define COMPILER_VERSION "--with-gcc (%d.%d)", __GNUC__, __GNUC_MINOR__ | |
1944 | #else | |
1945 | #define COMPILER_VERSION "" | |
1946 | #endif | |
1947 | #endif | |
1948 | ||
83e245c4 | 1949 | if (_snprintf (cv, sizeof (cv) - 1, COMPILER_VERSION) < 0) |
38c54d9d | 1950 | return "Error: not enough space for compiler version"; |
83e245c4 | 1951 | cv[sizeof (cv) - 1] = '\0'; |
38c54d9d JB |
1952 | |
1953 | for (i = 0; options[i]; i++) | |
1954 | size += strlen (options[i]); | |
1955 | ||
1956 | options_buffer = xmalloc (size + 1); | |
fc33e153 | 1957 | options_buffer[0] = '\0'; |
38c54d9d JB |
1958 | |
1959 | for (i = 0; options[i]; i++) | |
1960 | strcat (options_buffer, options[i]); | |
1961 | ||
a302c7ae AI |
1962 | return options_buffer; |
1963 | } | |
1964 | ||
1965 | ||
35f0d482 KH |
1966 | #include <sys/timeb.h> |
1967 | ||
1968 | /* Emulate gettimeofday (Ulrich Leodolter, 1/11/95). */ | |
177c0ea7 | 1969 | void |
35f0d482 KH |
1970 | gettimeofday (struct timeval *tv, struct timezone *tz) |
1971 | { | |
6e602566 | 1972 | struct _timeb tb; |
35f0d482 KH |
1973 | _ftime (&tb); |
1974 | ||
1975 | tv->tv_sec = tb.time; | |
1976 | tv->tv_usec = tb.millitm * 1000L; | |
97a93095 EZ |
1977 | /* Implementation note: _ftime sometimes doesn't update the dstflag |
1978 | according to the new timezone when the system timezone is | |
1979 | changed. We could fix that by using GetSystemTime and | |
1980 | GetTimeZoneInformation, but that doesn't seem necessary, since | |
1981 | Emacs always calls gettimeofday with the 2nd argument NULL (see | |
1982 | EMACS_GET_TIME). */ | |
177c0ea7 | 1983 | if (tz) |
35f0d482 KH |
1984 | { |
1985 | tz->tz_minuteswest = tb.timezone; /* minutes west of Greenwich */ | |
1986 | tz->tz_dsttime = tb.dstflag; /* type of dst correction */ | |
1987 | } | |
1988 | } | |
35f0d482 | 1989 | |
480b0c5b | 1990 | /* ------------------------------------------------------------------------- */ |
fbd6baed | 1991 | /* IO support and wrapper functions for W32 API. */ |
480b0c5b | 1992 | /* ------------------------------------------------------------------------- */ |
95ed0025 | 1993 | |
480b0c5b | 1994 | /* Place a wrapper around the MSVC version of ctime. It returns NULL |
177c0ea7 | 1995 | on network directories, so we handle that case here. |
480b0c5b GV |
1996 | (Ulrich Leodolter, 1/11/95). */ |
1997 | char * | |
1998 | sys_ctime (const time_t *t) | |
1999 | { | |
2000 | char *str = (char *) ctime (t); | |
2001 | return (str ? str : "Sun Jan 01 00:00:00 1970"); | |
2002 | } | |
2003 | ||
2004 | /* Emulate sleep...we could have done this with a define, but that | |
2005 | would necessitate including windows.h in the files that used it. | |
2006 | This is much easier. */ | |
2007 | void | |
2008 | sys_sleep (int seconds) | |
2009 | { | |
2010 | Sleep (seconds * 1000); | |
2011 | } | |
2012 | ||
76b3903d | 2013 | /* Internal MSVC functions for low-level descriptor munging */ |
480b0c5b GV |
2014 | extern int __cdecl _set_osfhnd (int fd, long h); |
2015 | extern int __cdecl _free_osfhnd (int fd); | |
2016 | ||
2017 | /* parallel array of private info on file handles */ | |
2018 | filedesc fd_info [ MAXDESC ]; | |
2019 | ||
76b3903d GV |
2020 | typedef struct volume_info_data { |
2021 | struct volume_info_data * next; | |
2022 | ||
2023 | /* time when info was obtained */ | |
2024 | DWORD timestamp; | |
2025 | ||
2026 | /* actual volume info */ | |
2027 | char * root_dir; | |
480b0c5b GV |
2028 | DWORD serialnum; |
2029 | DWORD maxcomp; | |
2030 | DWORD flags; | |
76b3903d GV |
2031 | char * name; |
2032 | char * type; | |
2033 | } volume_info_data; | |
2034 | ||
2035 | /* Global referenced by various functions. */ | |
2036 | static volume_info_data volume_info; | |
2037 | ||
2038 | /* Vector to indicate which drives are local and fixed (for which cached | |
2039 | data never expires). */ | |
2040 | static BOOL fixed_drives[26]; | |
2041 | ||
2042 | /* Consider cached volume information to be stale if older than 10s, | |
2043 | at least for non-local drives. Info for fixed drives is never stale. */ | |
2044 | #define DRIVE_INDEX( c ) ( (c) <= 'Z' ? (c) - 'A' : (c) - 'a' ) | |
2045 | #define VOLINFO_STILL_VALID( root_dir, info ) \ | |
2046 | ( ( isalpha (root_dir[0]) && \ | |
2047 | fixed_drives[ DRIVE_INDEX (root_dir[0]) ] ) \ | |
2048 | || GetTickCount () - info->timestamp < 10000 ) | |
2049 | ||
2050 | /* Cache support functions. */ | |
2051 | ||
2052 | /* Simple linked list with linear search is sufficient. */ | |
2053 | static volume_info_data *volume_cache = NULL; | |
2054 | ||
2055 | static volume_info_data * | |
2056 | lookup_volume_info (char * root_dir) | |
2057 | { | |
2058 | volume_info_data * info; | |
2059 | ||
2060 | for (info = volume_cache; info; info = info->next) | |
05131107 | 2061 | if (xstrcasecmp (info->root_dir, root_dir) == 0) |
76b3903d GV |
2062 | break; |
2063 | return info; | |
2064 | } | |
2065 | ||
2066 | static void | |
2067 | add_volume_info (char * root_dir, volume_info_data * info) | |
2068 | { | |
a302c7ae | 2069 | info->root_dir = xstrdup (root_dir); |
76b3903d GV |
2070 | info->next = volume_cache; |
2071 | volume_cache = info; | |
2072 | } | |
2073 | ||
2074 | ||
2075 | /* Wrapper for GetVolumeInformation, which uses caching to avoid | |
2076 | performance penalty (~2ms on 486 for local drives, 7.5ms for local | |
2077 | cdrom drive, ~5-10ms or more for remote drives on LAN). */ | |
bedf4aab | 2078 | static volume_info_data * |
76b3903d GV |
2079 | GetCachedVolumeInformation (char * root_dir) |
2080 | { | |
2081 | volume_info_data * info; | |
2082 | char default_root[ MAX_PATH ]; | |
2083 | ||
2084 | /* NULL for root_dir means use root from current directory. */ | |
2085 | if (root_dir == NULL) | |
2086 | { | |
2087 | if (GetCurrentDirectory (MAX_PATH, default_root) == 0) | |
2088 | return NULL; | |
2089 | parse_root (default_root, &root_dir); | |
2090 | *root_dir = 0; | |
2091 | root_dir = default_root; | |
2092 | } | |
2093 | ||
2094 | /* Local fixed drives can be cached permanently. Removable drives | |
2095 | cannot be cached permanently, since the volume name and serial | |
2096 | number (if nothing else) can change. Remote drives should be | |
2097 | treated as if they are removable, since there is no sure way to | |
2098 | tell whether they are or not. Also, the UNC association of drive | |
2099 | letters mapped to remote volumes can be changed at any time (even | |
2100 | by other processes) without notice. | |
177c0ea7 | 2101 | |
76b3903d GV |
2102 | As a compromise, so we can benefit from caching info for remote |
2103 | volumes, we use a simple expiry mechanism to invalidate cache | |
2104 | entries that are more than ten seconds old. */ | |
2105 | ||
2106 | #if 0 | |
2107 | /* No point doing this, because WNetGetConnection is even slower than | |
2108 | GetVolumeInformation, consistently taking ~50ms on a 486 (FWIW, | |
2109 | GetDriveType is about the only call of this type which does not | |
2110 | involve network access, and so is extremely quick). */ | |
2111 | ||
2112 | /* Map drive letter to UNC if remote. */ | |
ed3751c8 | 2113 | if (isalpha (root_dir[0]) && !fixed[DRIVE_INDEX (root_dir[0])]) |
76b3903d GV |
2114 | { |
2115 | char remote_name[ 256 ]; | |
2116 | char drive[3] = { root_dir[0], ':' }; | |
2117 | ||
2118 | if (WNetGetConnection (drive, remote_name, sizeof (remote_name)) | |
2119 | == NO_ERROR) | |
2120 | /* do something */ ; | |
2121 | } | |
2122 | #endif | |
2123 | ||
2124 | info = lookup_volume_info (root_dir); | |
2125 | ||
2126 | if (info == NULL || ! VOLINFO_STILL_VALID (root_dir, info)) | |
94eab1c8 JB |
2127 | { |
2128 | char name[ 256 ]; | |
2129 | DWORD serialnum; | |
2130 | DWORD maxcomp; | |
2131 | DWORD flags; | |
2132 | char type[ 256 ]; | |
2133 | ||
2134 | /* Info is not cached, or is stale. */ | |
2135 | if (!GetVolumeInformation (root_dir, | |
2136 | name, sizeof (name), | |
2137 | &serialnum, | |
2138 | &maxcomp, | |
2139 | &flags, | |
2140 | type, sizeof (type))) | |
2141 | return NULL; | |
76b3903d | 2142 | |
94eab1c8 JB |
2143 | /* Cache the volume information for future use, overwriting existing |
2144 | entry if present. */ | |
2145 | if (info == NULL) | |
2146 | { | |
2147 | info = (volume_info_data *) xmalloc (sizeof (volume_info_data)); | |
2148 | add_volume_info (root_dir, info); | |
2149 | } | |
2150 | else | |
2151 | { | |
2152 | xfree (info->name); | |
2153 | xfree (info->type); | |
2154 | } | |
2155 | ||
2156 | info->name = xstrdup (name); | |
2157 | info->serialnum = serialnum; | |
2158 | info->maxcomp = maxcomp; | |
2159 | info->flags = flags; | |
2160 | info->type = xstrdup (type); | |
2161 | info->timestamp = GetTickCount (); | |
2162 | } | |
76b3903d GV |
2163 | |
2164 | return info; | |
2165 | } | |
480b0c5b GV |
2166 | |
2167 | /* Get information on the volume where name is held; set path pointer to | |
2168 | start of pathname in name (past UNC header\volume header if present). */ | |
bedf4aab | 2169 | static int |
480b0c5b | 2170 | get_volume_info (const char * name, const char ** pPath) |
95ed0025 | 2171 | { |
480b0c5b GV |
2172 | char temp[MAX_PATH]; |
2173 | char *rootname = NULL; /* default to current volume */ | |
76b3903d | 2174 | volume_info_data * info; |
480b0c5b GV |
2175 | |
2176 | if (name == NULL) | |
2177 | return FALSE; | |
2178 | ||
2179 | /* find the root name of the volume if given */ | |
2180 | if (isalpha (name[0]) && name[1] == ':') | |
2181 | { | |
2182 | rootname = temp; | |
2183 | temp[0] = *name++; | |
2184 | temp[1] = *name++; | |
2185 | temp[2] = '\\'; | |
2186 | temp[3] = 0; | |
2187 | } | |
2188 | else if (IS_DIRECTORY_SEP (name[0]) && IS_DIRECTORY_SEP (name[1])) | |
95ed0025 | 2189 | { |
480b0c5b GV |
2190 | char *str = temp; |
2191 | int slashes = 4; | |
2192 | rootname = temp; | |
2193 | do | |
2194 | { | |
2195 | if (IS_DIRECTORY_SEP (*name) && --slashes == 0) | |
2196 | break; | |
2197 | *str++ = *name++; | |
2198 | } | |
2199 | while ( *name ); | |
2200 | ||
480b0c5b GV |
2201 | *str++ = '\\'; |
2202 | *str = 0; | |
95ed0025 | 2203 | } |
480b0c5b GV |
2204 | |
2205 | if (pPath) | |
2206 | *pPath = name; | |
177c0ea7 | 2207 | |
76b3903d GV |
2208 | info = GetCachedVolumeInformation (rootname); |
2209 | if (info != NULL) | |
95ed0025 | 2210 | { |
76b3903d GV |
2211 | /* Set global referenced by other functions. */ |
2212 | volume_info = *info; | |
480b0c5b | 2213 | return TRUE; |
95ed0025 | 2214 | } |
480b0c5b GV |
2215 | return FALSE; |
2216 | } | |
2217 | ||
2218 | /* Determine if volume is FAT format (ie. only supports short 8.3 | |
2219 | names); also set path pointer to start of pathname in name. */ | |
bedf4aab | 2220 | static int |
480b0c5b GV |
2221 | is_fat_volume (const char * name, const char ** pPath) |
2222 | { | |
2223 | if (get_volume_info (name, pPath)) | |
2224 | return (volume_info.maxcomp == 12); | |
2225 | return FALSE; | |
2226 | } | |
2227 | ||
4d90eee4 | 2228 | /* Map filename to a valid 8.3 name if necessary. */ |
480b0c5b | 2229 | const char * |
fbd6baed | 2230 | map_w32_filename (const char * name, const char ** pPath) |
480b0c5b GV |
2231 | { |
2232 | static char shortname[MAX_PATH]; | |
2233 | char * str = shortname; | |
2234 | char c; | |
480b0c5b | 2235 | char * path; |
76b3903d | 2236 | const char * save_name = name; |
480b0c5b | 2237 | |
ca149beb AI |
2238 | if (strlen (name) >= MAX_PATH) |
2239 | { | |
2240 | /* Return a filename which will cause callers to fail. */ | |
2241 | strcpy (shortname, "?"); | |
2242 | return shortname; | |
2243 | } | |
2244 | ||
a302c7ae | 2245 | if (is_fat_volume (name, (const char **)&path)) /* truncate to 8.3 */ |
95ed0025 | 2246 | { |
480b0c5b GV |
2247 | register int left = 8; /* maximum number of chars in part */ |
2248 | register int extn = 0; /* extension added? */ | |
2249 | register int dots = 2; /* maximum number of dots allowed */ | |
2250 | ||
2251 | while (name < path) | |
2252 | *str++ = *name++; /* skip past UNC header */ | |
2253 | ||
2254 | while ((c = *name++)) | |
2255 | { | |
2256 | switch ( c ) | |
2257 | { | |
2258 | case '\\': | |
2259 | case '/': | |
2260 | *str++ = '\\'; | |
2261 | extn = 0; /* reset extension flags */ | |
2262 | dots = 2; /* max 2 dots */ | |
2263 | left = 8; /* max length 8 for main part */ | |
2264 | break; | |
2265 | case ':': | |
2266 | *str++ = ':'; | |
2267 | extn = 0; /* reset extension flags */ | |
2268 | dots = 2; /* max 2 dots */ | |
2269 | left = 8; /* max length 8 for main part */ | |
2270 | break; | |
2271 | case '.': | |
2272 | if ( dots ) | |
2273 | { | |
2274 | /* Convert path components of the form .xxx to _xxx, | |
2275 | but leave . and .. as they are. This allows .emacs | |
2276 | to be read as _emacs, for example. */ | |
2277 | ||
2278 | if (! *name || | |
2279 | *name == '.' || | |
2280 | IS_DIRECTORY_SEP (*name)) | |
2281 | { | |
2282 | *str++ = '.'; | |
2283 | dots--; | |
2284 | } | |
2285 | else | |
2286 | { | |
2287 | *str++ = '_'; | |
2288 | left--; | |
2289 | dots = 0; | |
2290 | } | |
2291 | } | |
2292 | else if ( !extn ) | |
2293 | { | |
2294 | *str++ = '.'; | |
2295 | extn = 1; /* we've got an extension */ | |
2296 | left = 3; /* 3 chars in extension */ | |
2297 | } | |
2298 | else | |
2299 | { | |
2300 | /* any embedded dots after the first are converted to _ */ | |
2301 | *str++ = '_'; | |
2302 | } | |
2303 | break; | |
2304 | case '~': | |
2305 | case '#': /* don't lose these, they're important */ | |
2306 | if ( ! left ) | |
2307 | str[-1] = c; /* replace last character of part */ | |
2308 | /* FALLTHRU */ | |
2309 | default: | |
2310 | if ( left ) | |
2311 | { | |
2312 | *str++ = tolower (c); /* map to lower case (looks nicer) */ | |
2313 | left--; | |
2314 | dots = 0; /* started a path component */ | |
2315 | } | |
2316 | break; | |
2317 | } | |
2318 | } | |
2319 | *str = '\0'; | |
fc85cb29 RS |
2320 | } |
2321 | else | |
2322 | { | |
2323 | strcpy (shortname, name); | |
2324 | unixtodos_filename (shortname); | |
95ed0025 | 2325 | } |
480b0c5b GV |
2326 | |
2327 | if (pPath) | |
76b3903d | 2328 | *pPath = shortname + (path - save_name); |
480b0c5b | 2329 | |
fc85cb29 | 2330 | return shortname; |
480b0c5b GV |
2331 | } |
2332 | ||
b3308d2e KH |
2333 | static int |
2334 | is_exec (const char * name) | |
2335 | { | |
2336 | char * p = strrchr (name, '.'); | |
2337 | return | |
2338 | (p != NULL | |
05131107 JR |
2339 | && (xstrcasecmp (p, ".exe") == 0 || |
2340 | xstrcasecmp (p, ".com") == 0 || | |
2341 | xstrcasecmp (p, ".bat") == 0 || | |
2342 | xstrcasecmp (p, ".cmd") == 0)); | |
b3308d2e KH |
2343 | } |
2344 | ||
177c0ea7 | 2345 | /* Emulate the Unix directory procedures opendir, closedir, |
76b3903d GV |
2346 | and readdir. We can't use the procedures supplied in sysdep.c, |
2347 | so we provide them here. */ | |
2348 | ||
2349 | struct direct dir_static; /* simulated directory contents */ | |
2350 | static HANDLE dir_find_handle = INVALID_HANDLE_VALUE; | |
2351 | static int dir_is_fat; | |
2352 | static char dir_pathname[MAXPATHLEN+1]; | |
2353 | static WIN32_FIND_DATA dir_find_data; | |
2354 | ||
9d3355d1 GV |
2355 | /* Support shares on a network resource as subdirectories of a read-only |
2356 | root directory. */ | |
2357 | static HANDLE wnet_enum_handle = INVALID_HANDLE_VALUE; | |
bedf4aab JB |
2358 | static HANDLE open_unc_volume (const char *); |
2359 | static char *read_unc_volume (HANDLE, char *, int); | |
2360 | static void close_unc_volume (HANDLE); | |
9d3355d1 | 2361 | |
76b3903d GV |
2362 | DIR * |
2363 | opendir (char *filename) | |
2364 | { | |
2365 | DIR *dirp; | |
2366 | ||
2367 | /* Opening is done by FindFirstFile. However, a read is inherent to | |
2368 | this operation, so we defer the open until read time. */ | |
2369 | ||
76b3903d GV |
2370 | if (dir_find_handle != INVALID_HANDLE_VALUE) |
2371 | return NULL; | |
9d3355d1 GV |
2372 | if (wnet_enum_handle != INVALID_HANDLE_VALUE) |
2373 | return NULL; | |
2374 | ||
2375 | if (is_unc_volume (filename)) | |
2376 | { | |
2377 | wnet_enum_handle = open_unc_volume (filename); | |
2378 | if (wnet_enum_handle == INVALID_HANDLE_VALUE) | |
2379 | return NULL; | |
2380 | } | |
2381 | ||
2382 | if (!(dirp = (DIR *) malloc (sizeof (DIR)))) | |
2383 | return NULL; | |
76b3903d GV |
2384 | |
2385 | dirp->dd_fd = 0; | |
2386 | dirp->dd_loc = 0; | |
2387 | dirp->dd_size = 0; | |
2388 | ||
2389 | strncpy (dir_pathname, map_w32_filename (filename, NULL), MAXPATHLEN); | |
2390 | dir_pathname[MAXPATHLEN] = '\0'; | |
2391 | dir_is_fat = is_fat_volume (filename, NULL); | |
2392 | ||
2393 | return dirp; | |
2394 | } | |
2395 | ||
2396 | void | |
2397 | closedir (DIR *dirp) | |
2398 | { | |
2399 | /* If we have a find-handle open, close it. */ | |
2400 | if (dir_find_handle != INVALID_HANDLE_VALUE) | |
2401 | { | |
2402 | FindClose (dir_find_handle); | |
2403 | dir_find_handle = INVALID_HANDLE_VALUE; | |
2404 | } | |
9d3355d1 GV |
2405 | else if (wnet_enum_handle != INVALID_HANDLE_VALUE) |
2406 | { | |
2407 | close_unc_volume (wnet_enum_handle); | |
2408 | wnet_enum_handle = INVALID_HANDLE_VALUE; | |
2409 | } | |
76b3903d GV |
2410 | xfree ((char *) dirp); |
2411 | } | |
2412 | ||
2413 | struct direct * | |
2414 | readdir (DIR *dirp) | |
2415 | { | |
b07103dc EZ |
2416 | int downcase = !NILP (Vw32_downcase_file_names); |
2417 | ||
9d3355d1 GV |
2418 | if (wnet_enum_handle != INVALID_HANDLE_VALUE) |
2419 | { | |
177c0ea7 | 2420 | if (!read_unc_volume (wnet_enum_handle, |
59eb0929 JB |
2421 | dir_find_data.cFileName, |
2422 | MAX_PATH)) | |
9d3355d1 GV |
2423 | return NULL; |
2424 | } | |
76b3903d | 2425 | /* If we aren't dir_finding, do a find-first, otherwise do a find-next. */ |
9d3355d1 | 2426 | else if (dir_find_handle == INVALID_HANDLE_VALUE) |
76b3903d GV |
2427 | { |
2428 | char filename[MAXNAMLEN + 3]; | |
2429 | int ln; | |
2430 | ||
2431 | strcpy (filename, dir_pathname); | |
2432 | ln = strlen (filename) - 1; | |
2433 | if (!IS_DIRECTORY_SEP (filename[ln])) | |
2434 | strcat (filename, "\\"); | |
2435 | strcat (filename, "*"); | |
2436 | ||
2437 | dir_find_handle = FindFirstFile (filename, &dir_find_data); | |
2438 | ||
2439 | if (dir_find_handle == INVALID_HANDLE_VALUE) | |
2440 | return NULL; | |
2441 | } | |
2442 | else | |
2443 | { | |
2444 | if (!FindNextFile (dir_find_handle, &dir_find_data)) | |
2445 | return NULL; | |
2446 | } | |
177c0ea7 | 2447 | |
76b3903d GV |
2448 | /* Emacs never uses this value, so don't bother making it match |
2449 | value returned by stat(). */ | |
2450 | dir_static.d_ino = 1; | |
177c0ea7 | 2451 | |
b07103dc EZ |
2452 | strcpy (dir_static.d_name, dir_find_data.cFileName); |
2453 | ||
2454 | /* If the file name in cFileName[] includes `?' characters, it means | |
2455 | the original file name used characters that cannot be represented | |
2456 | by the current ANSI codepage. To avoid total lossage, retrieve | |
2457 | the short 8+3 alias of the long file name. */ | |
2458 | if (_mbspbrk (dir_static.d_name, "?")) | |
2459 | { | |
2460 | strcpy (dir_static.d_name, dir_find_data.cAlternateFileName); | |
2461 | downcase = 1; /* 8+3 aliases are returned in all caps */ | |
2462 | } | |
2463 | dir_static.d_namlen = strlen (dir_static.d_name); | |
76b3903d GV |
2464 | dir_static.d_reclen = sizeof (struct direct) - MAXNAMLEN + 3 + |
2465 | dir_static.d_namlen - dir_static.d_namlen % 4; | |
177c0ea7 | 2466 | |
192788d7 EZ |
2467 | /* If the file name in cFileName[] includes `?' characters, it means |
2468 | the original file name used characters that cannot be represented | |
2469 | by the current ANSI codepage. To avoid total lossage, retrieve | |
2470 | the short 8+3 alias of the long file name. */ | |
2471 | if (_mbspbrk (dir_find_data.cFileName, "?")) | |
2472 | { | |
2473 | strcpy (dir_static.d_name, dir_find_data.cAlternateFileName); | |
2474 | /* 8+3 aliases are returned in all caps, which could break | |
2475 | various alists that look at filenames' extensions. */ | |
2476 | downcase = 1; | |
2477 | } | |
2478 | else | |
2479 | strcpy (dir_static.d_name, dir_find_data.cFileName); | |
2480 | dir_static.d_namlen = strlen (dir_static.d_name); | |
76b3903d GV |
2481 | if (dir_is_fat) |
2482 | _strlwr (dir_static.d_name); | |
b07103dc | 2483 | else if (downcase) |
76b3903d GV |
2484 | { |
2485 | register char *p; | |
2486 | for (p = dir_static.d_name; *p; p++) | |
2487 | if (*p >= 'a' && *p <= 'z') | |
2488 | break; | |
2489 | if (!*p) | |
2490 | _strlwr (dir_static.d_name); | |
2491 | } | |
177c0ea7 | 2492 | |
76b3903d GV |
2493 | return &dir_static; |
2494 | } | |
2495 | ||
bedf4aab | 2496 | static HANDLE |
e0c181dd | 2497 | open_unc_volume (const char *path) |
9d3355d1 | 2498 | { |
177c0ea7 | 2499 | NETRESOURCE nr; |
9d3355d1 GV |
2500 | HANDLE henum; |
2501 | int result; | |
2502 | ||
177c0ea7 JB |
2503 | nr.dwScope = RESOURCE_GLOBALNET; |
2504 | nr.dwType = RESOURCETYPE_DISK; | |
2505 | nr.dwDisplayType = RESOURCEDISPLAYTYPE_SERVER; | |
2506 | nr.dwUsage = RESOURCEUSAGE_CONTAINER; | |
2507 | nr.lpLocalName = NULL; | |
6e602566 | 2508 | nr.lpRemoteName = (LPSTR)map_w32_filename (path, NULL); |
177c0ea7 JB |
2509 | nr.lpComment = NULL; |
2510 | nr.lpProvider = NULL; | |
9d3355d1 | 2511 | |
ed3751c8 JB |
2512 | result = WNetOpenEnum (RESOURCE_GLOBALNET, RESOURCETYPE_DISK, |
2513 | RESOURCEUSAGE_CONNECTABLE, &nr, &henum); | |
9d3355d1 GV |
2514 | |
2515 | if (result == NO_ERROR) | |
2516 | return henum; | |
2517 | else | |
2518 | return INVALID_HANDLE_VALUE; | |
2519 | } | |
2520 | ||
bedf4aab | 2521 | static char * |
9d3355d1 GV |
2522 | read_unc_volume (HANDLE henum, char *readbuf, int size) |
2523 | { | |
a302c7ae | 2524 | DWORD count; |
9d3355d1 | 2525 | int result; |
a302c7ae | 2526 | DWORD bufsize = 512; |
9d3355d1 GV |
2527 | char *buffer; |
2528 | char *ptr; | |
2529 | ||
2530 | count = 1; | |
2531 | buffer = alloca (bufsize); | |
59eb0929 | 2532 | result = WNetEnumResource (henum, &count, buffer, &bufsize); |
9d3355d1 GV |
2533 | if (result != NO_ERROR) |
2534 | return NULL; | |
2535 | ||
2536 | /* WNetEnumResource returns \\resource\share...skip forward to "share". */ | |
2537 | ptr = ((LPNETRESOURCE) buffer)->lpRemoteName; | |
2538 | ptr += 2; | |
2539 | while (*ptr && !IS_DIRECTORY_SEP (*ptr)) ptr++; | |
2540 | ptr++; | |
2541 | ||
2542 | strncpy (readbuf, ptr, size); | |
2543 | return readbuf; | |
2544 | } | |
2545 | ||
bedf4aab | 2546 | static void |
9d3355d1 GV |
2547 | close_unc_volume (HANDLE henum) |
2548 | { | |
2549 | if (henum != INVALID_HANDLE_VALUE) | |
2550 | WNetCloseEnum (henum); | |
2551 | } | |
2552 | ||
bedf4aab | 2553 | static DWORD |
e0c181dd | 2554 | unc_volume_file_attributes (const char *path) |
9d3355d1 GV |
2555 | { |
2556 | HANDLE henum; | |
2557 | DWORD attrs; | |
2558 | ||
2559 | henum = open_unc_volume (path); | |
2560 | if (henum == INVALID_HANDLE_VALUE) | |
2561 | return -1; | |
2562 | ||
2563 | attrs = FILE_ATTRIBUTE_READONLY | FILE_ATTRIBUTE_DIRECTORY; | |
2564 | ||
2565 | close_unc_volume (henum); | |
2566 | ||
2567 | return attrs; | |
2568 | } | |
2569 | ||
302d7d54 JR |
2570 | /* Ensure a network connection is authenticated. */ |
2571 | static void | |
2572 | logon_network_drive (const char *path) | |
2573 | { | |
2574 | NETRESOURCE resource; | |
2575 | char share[MAX_PATH]; | |
2576 | int i, n_slashes; | |
40a339c8 | 2577 | char drive[4]; |
be4c6380 | 2578 | UINT drvtype; |
40a339c8 | 2579 | |
be4c6380 EZ |
2580 | if (IS_DIRECTORY_SEP (path[0]) && IS_DIRECTORY_SEP (path[1])) |
2581 | drvtype = DRIVE_REMOTE; | |
2582 | else if (path[0] == '\0' || path[1] != ':') | |
2583 | drvtype = GetDriveType (NULL); | |
2584 | else | |
2585 | { | |
2586 | drive[0] = path[0]; | |
2587 | drive[1] = ':'; | |
2588 | drive[2] = '\\'; | |
2589 | drive[3] = '\0'; | |
2590 | drvtype = GetDriveType (drive); | |
2591 | } | |
302d7d54 JR |
2592 | |
2593 | /* Only logon to networked drives. */ | |
be4c6380 | 2594 | if (drvtype != DRIVE_REMOTE) |
302d7d54 | 2595 | return; |
40a339c8 | 2596 | |
302d7d54 JR |
2597 | n_slashes = 2; |
2598 | strncpy (share, path, MAX_PATH); | |
2599 | /* Truncate to just server and share name. */ | |
2600 | for (i = 2; i < MAX_PATH; i++) | |
2601 | { | |
2602 | if (IS_DIRECTORY_SEP (share[i]) && ++n_slashes > 3) | |
2603 | { | |
2604 | share[i] = '\0'; | |
2605 | break; | |
2606 | } | |
2607 | } | |
2608 | ||
2609 | resource.dwType = RESOURCETYPE_DISK; | |
2610 | resource.lpLocalName = NULL; | |
2611 | resource.lpRemoteName = share; | |
2612 | resource.lpProvider = NULL; | |
2613 | ||
2614 | WNetAddConnection2 (&resource, NULL, NULL, CONNECT_INTERACTIVE); | |
2615 | } | |
480b0c5b GV |
2616 | |
2617 | /* Shadow some MSVC runtime functions to map requests for long filenames | |
2618 | to reasonable short names if necessary. This was originally added to | |
177c0ea7 | 2619 | permit running Emacs on NT 3.1 on a FAT partition, which doesn't support |
480b0c5b GV |
2620 | long file names. */ |
2621 | ||
2622 | int | |
2623 | sys_access (const char * path, int mode) | |
2624 | { | |
b3308d2e KH |
2625 | DWORD attributes; |
2626 | ||
2627 | /* MSVC implementation doesn't recognize D_OK. */ | |
2628 | path = map_w32_filename (path, NULL); | |
9d3355d1 GV |
2629 | if (is_unc_volume (path)) |
2630 | { | |
2631 | attributes = unc_volume_file_attributes (path); | |
2632 | if (attributes == -1) { | |
2633 | errno = EACCES; | |
2634 | return -1; | |
2635 | } | |
2636 | } | |
2637 | else if ((attributes = GetFileAttributes (path)) == -1) | |
b3308d2e KH |
2638 | { |
2639 | /* Should try mapping GetLastError to errno; for now just indicate | |
2640 | that path doesn't exist. */ | |
2641 | errno = EACCES; | |
2642 | return -1; | |
2643 | } | |
2644 | if ((mode & X_OK) != 0 && !is_exec (path)) | |
2645 | { | |
2646 | errno = EACCES; | |
2647 | return -1; | |
2648 | } | |
2649 | if ((mode & W_OK) != 0 && (attributes & FILE_ATTRIBUTE_READONLY) != 0) | |
2650 | { | |
2651 | errno = EACCES; | |
2652 | return -1; | |
2653 | } | |
2654 | if ((mode & D_OK) != 0 && (attributes & FILE_ATTRIBUTE_DIRECTORY) == 0) | |
2655 | { | |
2656 | errno = EACCES; | |
2657 | return -1; | |
2658 | } | |
2659 | return 0; | |
480b0c5b GV |
2660 | } |
2661 | ||
2662 | int | |
2663 | sys_chdir (const char * path) | |
2664 | { | |
fbd6baed | 2665 | return _chdir (map_w32_filename (path, NULL)); |
480b0c5b GV |
2666 | } |
2667 | ||
2668 | int | |
2669 | sys_chmod (const char * path, int mode) | |
2670 | { | |
fbd6baed | 2671 | return _chmod (map_w32_filename (path, NULL), mode); |
480b0c5b GV |
2672 | } |
2673 | ||
2d5ab4bf EZ |
2674 | int |
2675 | sys_chown (const char *path, uid_t owner, gid_t group) | |
2676 | { | |
e3b88685 | 2677 | if (sys_chmod (path, S_IREAD) == -1) /* check if file exists */ |
2d5ab4bf EZ |
2678 | return -1; |
2679 | return 0; | |
2680 | } | |
2681 | ||
480b0c5b GV |
2682 | int |
2683 | sys_creat (const char * path, int mode) | |
2684 | { | |
fbd6baed | 2685 | return _creat (map_w32_filename (path, NULL), mode); |
480b0c5b GV |
2686 | } |
2687 | ||
2688 | FILE * | |
b56ceb92 | 2689 | sys_fopen (const char * path, const char * mode) |
480b0c5b GV |
2690 | { |
2691 | int fd; | |
2692 | int oflag; | |
2693 | const char * mode_save = mode; | |
2694 | ||
2695 | /* Force all file handles to be non-inheritable. This is necessary to | |
2696 | ensure child processes don't unwittingly inherit handles that might | |
2697 | prevent future file access. */ | |
2698 | ||
2699 | if (mode[0] == 'r') | |
2700 | oflag = O_RDONLY; | |
2701 | else if (mode[0] == 'w' || mode[0] == 'a') | |
2702 | oflag = O_WRONLY | O_CREAT | O_TRUNC; | |
95ed0025 | 2703 | else |
480b0c5b GV |
2704 | return NULL; |
2705 | ||
2706 | /* Only do simplistic option parsing. */ | |
2707 | while (*++mode) | |
2708 | if (mode[0] == '+') | |
2709 | { | |
2710 | oflag &= ~(O_RDONLY | O_WRONLY); | |
2711 | oflag |= O_RDWR; | |
2712 | } | |
2713 | else if (mode[0] == 'b') | |
2714 | { | |
2715 | oflag &= ~O_TEXT; | |
2716 | oflag |= O_BINARY; | |
2717 | } | |
2718 | else if (mode[0] == 't') | |
2719 | { | |
2720 | oflag &= ~O_BINARY; | |
2721 | oflag |= O_TEXT; | |
2722 | } | |
2723 | else break; | |
2724 | ||
fbd6baed | 2725 | fd = _open (map_w32_filename (path, NULL), oflag | _O_NOINHERIT, 0644); |
480b0c5b GV |
2726 | if (fd < 0) |
2727 | return NULL; | |
2728 | ||
76b3903d | 2729 | return _fdopen (fd, mode_save); |
95ed0025 | 2730 | } |
480b0c5b | 2731 | |
76b3903d | 2732 | /* This only works on NTFS volumes, but is useful to have. */ |
480b0c5b | 2733 | int |
76b3903d | 2734 | sys_link (const char * old, const char * new) |
480b0c5b | 2735 | { |
76b3903d GV |
2736 | HANDLE fileh; |
2737 | int result = -1; | |
2738 | char oldname[MAX_PATH], newname[MAX_PATH]; | |
2739 | ||
2740 | if (old == NULL || new == NULL) | |
2741 | { | |
2742 | errno = ENOENT; | |
2743 | return -1; | |
2744 | } | |
2745 | ||
2746 | strcpy (oldname, map_w32_filename (old, NULL)); | |
2747 | strcpy (newname, map_w32_filename (new, NULL)); | |
2748 | ||
2749 | fileh = CreateFile (oldname, 0, 0, NULL, OPEN_EXISTING, | |
2750 | FILE_FLAG_BACKUP_SEMANTICS, NULL); | |
2751 | if (fileh != INVALID_HANDLE_VALUE) | |
2752 | { | |
2753 | int wlen; | |
2754 | ||
2755 | /* Confusingly, the "alternate" stream name field does not apply | |
2756 | when restoring a hard link, and instead contains the actual | |
2757 | stream data for the link (ie. the name of the link to create). | |
2758 | The WIN32_STREAM_ID structure before the cStreamName field is | |
2759 | the stream header, which is then immediately followed by the | |
2760 | stream data. */ | |
2761 | ||
2762 | struct { | |
2763 | WIN32_STREAM_ID wid; | |
2764 | WCHAR wbuffer[MAX_PATH]; /* extra space for link name */ | |
2765 | } data; | |
2766 | ||
2767 | wlen = MultiByteToWideChar (CP_ACP, MB_PRECOMPOSED, newname, -1, | |
2768 | data.wid.cStreamName, MAX_PATH); | |
2769 | if (wlen > 0) | |
2770 | { | |
2771 | LPVOID context = NULL; | |
2772 | DWORD wbytes = 0; | |
2773 | ||
2774 | data.wid.dwStreamId = BACKUP_LINK; | |
2775 | data.wid.dwStreamAttributes = 0; | |
ed3751c8 | 2776 | data.wid.Size.LowPart = wlen * sizeof (WCHAR); |
76b3903d GV |
2777 | data.wid.Size.HighPart = 0; |
2778 | data.wid.dwStreamNameSize = 0; | |
2779 | ||
2780 | if (BackupWrite (fileh, (LPBYTE)&data, | |
2781 | offsetof (WIN32_STREAM_ID, cStreamName) | |
2782 | + data.wid.Size.LowPart, | |
2783 | &wbytes, FALSE, FALSE, &context) | |
2784 | && BackupWrite (fileh, NULL, 0, &wbytes, TRUE, FALSE, &context)) | |
2785 | { | |
2786 | /* succeeded */ | |
2787 | result = 0; | |
2788 | } | |
2789 | else | |
2790 | { | |
2791 | /* Should try mapping GetLastError to errno; for now just | |
2792 | indicate a general error (eg. links not supported). */ | |
2793 | errno = EINVAL; // perhaps EMLINK? | |
2794 | } | |
2795 | } | |
2796 | ||
2797 | CloseHandle (fileh); | |
2798 | } | |
2799 | else | |
2800 | errno = ENOENT; | |
2801 | ||
2802 | return result; | |
480b0c5b GV |
2803 | } |
2804 | ||
2805 | int | |
2806 | sys_mkdir (const char * path) | |
2807 | { | |
fbd6baed | 2808 | return _mkdir (map_w32_filename (path, NULL)); |
480b0c5b GV |
2809 | } |
2810 | ||
9d1778b1 RS |
2811 | /* Because of long name mapping issues, we need to implement this |
2812 | ourselves. Also, MSVC's _mktemp returns NULL when it can't generate | |
2813 | a unique name, instead of setting the input template to an empty | |
2814 | string. | |
2815 | ||
2816 | Standard algorithm seems to be use pid or tid with a letter on the | |
2817 | front (in place of the 6 X's) and cycle through the letters to find a | |
2818 | unique name. We extend that to allow any reasonable character as the | |
2819 | first of the 6 X's. */ | |
480b0c5b GV |
2820 | char * |
2821 | sys_mktemp (char * template) | |
2822 | { | |
9d1778b1 RS |
2823 | char * p; |
2824 | int i; | |
2825 | unsigned uid = GetCurrentThreadId (); | |
2826 | static char first_char[] = "abcdefghijklmnopqrstuvwyz0123456789!%-_@#"; | |
2827 | ||
2828 | if (template == NULL) | |
2829 | return NULL; | |
2830 | p = template + strlen (template); | |
2831 | i = 5; | |
2832 | /* replace up to the last 5 X's with uid in decimal */ | |
2833 | while (--p >= template && p[0] == 'X' && --i >= 0) | |
2834 | { | |
2835 | p[0] = '0' + uid % 10; | |
2836 | uid /= 10; | |
2837 | } | |
2838 | ||
2839 | if (i < 0 && p[0] == 'X') | |
2840 | { | |
2841 | i = 0; | |
2842 | do | |
2843 | { | |
2844 | int save_errno = errno; | |
2845 | p[0] = first_char[i]; | |
2846 | if (sys_access (template, 0) < 0) | |
2847 | { | |
2848 | errno = save_errno; | |
2849 | return template; | |
2850 | } | |
2851 | } | |
2852 | while (++i < sizeof (first_char)); | |
2853 | } | |
2854 | ||
2855 | /* Template is badly formed or else we can't generate a unique name, | |
2856 | so return empty string */ | |
2857 | template[0] = 0; | |
2858 | return template; | |
480b0c5b GV |
2859 | } |
2860 | ||
2861 | int | |
2862 | sys_open (const char * path, int oflag, int mode) | |
2863 | { | |
302f0b29 GM |
2864 | const char* mpath = map_w32_filename (path, NULL); |
2865 | /* Try to open file without _O_CREAT, to be able to write to hidden | |
2866 | and system files. Force all file handles to be | |
2867 | non-inheritable. */ | |
2868 | int res = _open (mpath, (oflag & ~_O_CREAT) | _O_NOINHERIT, mode); | |
2869 | if (res >= 0) | |
2870 | return res; | |
2871 | return _open (mpath, oflag | _O_NOINHERIT, mode); | |
480b0c5b GV |
2872 | } |
2873 | ||
2874 | int | |
2875 | sys_rename (const char * oldname, const char * newname) | |
2876 | { | |
cfb5e855 | 2877 | BOOL result; |
b3308d2e | 2878 | char temp[MAX_PATH]; |
480b0c5b | 2879 | |
e9e23e23 | 2880 | /* MoveFile on Windows 95 doesn't correctly change the short file name |
5162ffce MB |
2881 | alias in a number of circumstances (it is not easy to predict when |
2882 | just by looking at oldname and newname, unfortunately). In these | |
2883 | cases, renaming through a temporary name avoids the problem. | |
2884 | ||
e9e23e23 | 2885 | A second problem on Windows 95 is that renaming through a temp name when |
5162ffce MB |
2886 | newname is uppercase fails (the final long name ends up in |
2887 | lowercase, although the short alias might be uppercase) UNLESS the | |
2888 | long temp name is not 8.3. | |
2889 | ||
e9e23e23 | 2890 | So, on Windows 95 we always rename through a temp name, and we make sure |
5162ffce | 2891 | the temp name has a long extension to ensure correct renaming. */ |
480b0c5b | 2892 | |
fbd6baed | 2893 | strcpy (temp, map_w32_filename (oldname, NULL)); |
480b0c5b | 2894 | |
76b3903d | 2895 | if (os_subtype == OS_WIN95) |
480b0c5b | 2896 | { |
b3308d2e | 2897 | char * o; |
480b0c5b | 2898 | char * p; |
b3308d2e KH |
2899 | int i = 0; |
2900 | ||
2901 | oldname = map_w32_filename (oldname, NULL); | |
657d08d3 | 2902 | if ((o = strrchr (oldname, '\\'))) |
b3308d2e KH |
2903 | o++; |
2904 | else | |
2905 | o = (char *) oldname; | |
480b0c5b | 2906 | |
657d08d3 | 2907 | if ((p = strrchr (temp, '\\'))) |
480b0c5b GV |
2908 | p++; |
2909 | else | |
2910 | p = temp; | |
b3308d2e KH |
2911 | |
2912 | do | |
2913 | { | |
2914 | /* Force temp name to require a manufactured 8.3 alias - this | |
2915 | seems to make the second rename work properly. */ | |
f313ee82 | 2916 | sprintf (p, "_.%s.%u", o, i); |
b3308d2e | 2917 | i++; |
58f0cb7e | 2918 | result = rename (oldname, temp); |
b3308d2e KH |
2919 | } |
2920 | /* This loop must surely terminate! */ | |
cfb5e855 | 2921 | while (result < 0 && errno == EEXIST); |
58f0cb7e | 2922 | if (result < 0) |
480b0c5b GV |
2923 | return -1; |
2924 | } | |
2925 | ||
fffa137c | 2926 | /* Emulate Unix behavior - newname is deleted if it already exists |
5162ffce | 2927 | (at least if it is a file; don't do this for directories). |
76b3903d | 2928 | |
b3308d2e KH |
2929 | Since we mustn't do this if we are just changing the case of the |
2930 | file name (we would end up deleting the file we are trying to | |
2931 | rename!), we let rename detect if the destination file already | |
2932 | exists - that way we avoid the possible pitfalls of trying to | |
2933 | determine ourselves whether two names really refer to the same | |
2934 | file, which is not always possible in the general case. (Consider | |
2935 | all the permutations of shared or subst'd drives, etc.) */ | |
2936 | ||
2937 | newname = map_w32_filename (newname, NULL); | |
eb9ea53f | 2938 | result = rename (temp, newname); |
b3308d2e KH |
2939 | |
2940 | if (result < 0 | |
cfb5e855 | 2941 | && errno == EEXIST |
b3308d2e KH |
2942 | && _chmod (newname, 0666) == 0 |
2943 | && _unlink (newname) == 0) | |
2944 | result = rename (temp, newname); | |
480b0c5b | 2945 | |
eb9ea53f | 2946 | return result; |
480b0c5b GV |
2947 | } |
2948 | ||
2949 | int | |
2950 | sys_rmdir (const char * path) | |
2951 | { | |
fbd6baed | 2952 | return _rmdir (map_w32_filename (path, NULL)); |
480b0c5b GV |
2953 | } |
2954 | ||
2955 | int | |
2956 | sys_unlink (const char * path) | |
2957 | { | |
16bb7578 GV |
2958 | path = map_w32_filename (path, NULL); |
2959 | ||
2960 | /* On Unix, unlink works without write permission. */ | |
2961 | _chmod (path, 0666); | |
2962 | return _unlink (path); | |
480b0c5b GV |
2963 | } |
2964 | ||
2965 | static FILETIME utc_base_ft; | |
5da9424d | 2966 | static ULONGLONG utc_base; /* In 100ns units */ |
480b0c5b GV |
2967 | static int init = 0; |
2968 | ||
5da9424d JB |
2969 | #define FILETIME_TO_U64(result, ft) \ |
2970 | do { \ | |
2971 | ULARGE_INTEGER uiTemp; \ | |
2972 | uiTemp.LowPart = (ft).dwLowDateTime; \ | |
2973 | uiTemp.HighPart = (ft).dwHighDateTime; \ | |
2974 | result = uiTemp.QuadPart; \ | |
2975 | } while (0) | |
2976 | ||
2977 | static void | |
b56ceb92 | 2978 | initialize_utc_base (void) |
7c80d5ec | 2979 | { |
5da9424d JB |
2980 | /* Determine the delta between 1-Jan-1601 and 1-Jan-1970. */ |
2981 | SYSTEMTIME st; | |
2982 | ||
2983 | st.wYear = 1970; | |
2984 | st.wMonth = 1; | |
2985 | st.wDay = 1; | |
2986 | st.wHour = 0; | |
2987 | st.wMinute = 0; | |
2988 | st.wSecond = 0; | |
2989 | st.wMilliseconds = 0; | |
2990 | ||
2991 | SystemTimeToFileTime (&st, &utc_base_ft); | |
2992 | FILETIME_TO_U64 (utc_base, utc_base_ft); | |
7c80d5ec EZ |
2993 | } |
2994 | ||
480b0c5b GV |
2995 | static time_t |
2996 | convert_time (FILETIME ft) | |
2997 | { | |
5da9424d | 2998 | ULONGLONG tmp; |
480b0c5b GV |
2999 | |
3000 | if (!init) | |
3001 | { | |
9d4f32e8 | 3002 | initialize_utc_base (); |
480b0c5b GV |
3003 | init = 1; |
3004 | } | |
3005 | ||
3006 | if (CompareFileTime (&ft, &utc_base_ft) < 0) | |
3007 | return 0; | |
3008 | ||
5da9424d JB |
3009 | FILETIME_TO_U64 (tmp, ft); |
3010 | return (time_t) ((tmp - utc_base) / 10000000L); | |
480b0c5b GV |
3011 | } |
3012 | ||
bedf4aab | 3013 | static void |
480b0c5b GV |
3014 | convert_from_time_t (time_t time, FILETIME * pft) |
3015 | { | |
5da9424d | 3016 | ULARGE_INTEGER tmp; |
480b0c5b GV |
3017 | |
3018 | if (!init) | |
3019 | { | |
5da9424d | 3020 | initialize_utc_base (); |
480b0c5b GV |
3021 | init = 1; |
3022 | } | |
3023 | ||
3024 | /* time in 100ns units since 1-Jan-1601 */ | |
5da9424d JB |
3025 | tmp.QuadPart = (ULONGLONG) time * 10000000L + utc_base; |
3026 | pft->dwHighDateTime = tmp.HighPart; | |
3027 | pft->dwLowDateTime = tmp.LowPart; | |
480b0c5b | 3028 | } |
480b0c5b | 3029 | |
76b3903d GV |
3030 | #if 0 |
3031 | /* No reason to keep this; faking inode values either by hashing or even | |
3032 | using the file index from GetInformationByHandle, is not perfect and | |
3033 | so by default Emacs doesn't use the inode values on Windows. | |
3034 | Instead, we now determine file-truename correctly (except for | |
3035 | possible drive aliasing etc). */ | |
3036 | ||
3037 | /* Modified version of "PJW" algorithm (see the "Dragon" compiler book). */ | |
480b0c5b | 3038 | static unsigned |
76b3903d | 3039 | hashval (const unsigned char * str) |
480b0c5b GV |
3040 | { |
3041 | unsigned h = 0; | |
480b0c5b GV |
3042 | while (*str) |
3043 | { | |
3044 | h = (h << 4) + *str++; | |
76b3903d | 3045 | h ^= (h >> 28); |
480b0c5b GV |
3046 | } |
3047 | return h; | |
3048 | } | |
3049 | ||
3050 | /* Return the hash value of the canonical pathname, excluding the | |
3051 | drive/UNC header, to get a hopefully unique inode number. */ | |
76b3903d | 3052 | static DWORD |
480b0c5b GV |
3053 | generate_inode_val (const char * name) |
3054 | { | |
3055 | char fullname[ MAX_PATH ]; | |
3056 | char * p; | |
3057 | unsigned hash; | |
3058 | ||
76b3903d | 3059 | /* Get the truly canonical filename, if it exists. (Note: this |
e1dbe924 | 3060 | doesn't resolve aliasing due to subst commands, or recognize hard |
76b3903d GV |
3061 | links. */ |
3062 | if (!w32_get_long_filename ((char *)name, fullname, MAX_PATH)) | |
3063 | abort (); | |
3064 | ||
3065 | parse_root (fullname, &p); | |
fbd6baed | 3066 | /* Normal W32 filesystems are still case insensitive. */ |
480b0c5b | 3067 | _strlwr (p); |
76b3903d | 3068 | return hashval (p); |
480b0c5b GV |
3069 | } |
3070 | ||
76b3903d GV |
3071 | #endif |
3072 | ||
8aaaec6b EZ |
3073 | static PSECURITY_DESCRIPTOR |
3074 | get_file_security_desc (const char *fname) | |
3075 | { | |
3076 | PSECURITY_DESCRIPTOR psd = NULL; | |
3077 | DWORD sd_len, err; | |
3078 | SECURITY_INFORMATION si = OWNER_SECURITY_INFORMATION | |
3079 | | GROUP_SECURITY_INFORMATION /* | DACL_SECURITY_INFORMATION */ ; | |
3080 | ||
3081 | if (!get_file_security (fname, si, psd, 0, &sd_len)) | |
3082 | { | |
3083 | err = GetLastError (); | |
3084 | if (err != ERROR_INSUFFICIENT_BUFFER) | |
3085 | return NULL; | |
3086 | } | |
3087 | ||
3088 | psd = xmalloc (sd_len); | |
3089 | if (!get_file_security (fname, si, psd, sd_len, &sd_len)) | |
3090 | { | |
3091 | xfree (psd); | |
3092 | return NULL; | |
3093 | } | |
3094 | ||
3095 | return psd; | |
3096 | } | |
3097 | ||
3098 | static DWORD | |
3099 | get_rid (PSID sid) | |
3100 | { | |
3101 | unsigned n_subauthorities; | |
3102 | ||
3103 | /* Use the last sub-authority value of the RID, the relative | |
3104 | portion of the SID, as user/group ID. */ | |
3105 | n_subauthorities = *get_sid_sub_authority_count (sid); | |
3106 | if (n_subauthorities < 1) | |
3107 | return 0; /* the "World" RID */ | |
3108 | return *get_sid_sub_authority (sid, n_subauthorities - 1); | |
3109 | } | |
3110 | ||
f8b35b24 EZ |
3111 | /* Caching SID and account values for faster lokup. */ |
3112 | ||
3113 | #ifdef __GNUC__ | |
3114 | # define FLEXIBLE_ARRAY_MEMBER | |
3115 | #else | |
3116 | # define FLEXIBLE_ARRAY_MEMBER 1 | |
3117 | #endif | |
3118 | ||
3119 | struct w32_id { | |
22749e9a | 3120 | unsigned rid; |
f8b35b24 EZ |
3121 | struct w32_id *next; |
3122 | char name[GNLEN+1]; | |
3123 | unsigned char sid[FLEXIBLE_ARRAY_MEMBER]; | |
3124 | }; | |
3125 | ||
3126 | static struct w32_id *w32_idlist; | |
3127 | ||
3128 | static int | |
22749e9a | 3129 | w32_cached_id (PSID sid, unsigned *id, char *name) |
f8b35b24 EZ |
3130 | { |
3131 | struct w32_id *tail, *found; | |
3132 | ||
3133 | for (found = NULL, tail = w32_idlist; tail; tail = tail->next) | |
3134 | { | |
3135 | if (equal_sid ((PSID)tail->sid, sid)) | |
3136 | { | |
3137 | found = tail; | |
3138 | break; | |
3139 | } | |
3140 | } | |
3141 | if (found) | |
3142 | { | |
3143 | *id = found->rid; | |
3144 | strcpy (name, found->name); | |
3145 | return 1; | |
3146 | } | |
3147 | else | |
3148 | return 0; | |
3149 | } | |
3150 | ||
3151 | static void | |
22749e9a | 3152 | w32_add_to_cache (PSID sid, unsigned id, char *name) |
f8b35b24 EZ |
3153 | { |
3154 | DWORD sid_len; | |
3155 | struct w32_id *new_entry; | |
3156 | ||
3157 | /* We don't want to leave behind stale cache from when Emacs was | |
3158 | dumped. */ | |
3159 | if (initialized) | |
3160 | { | |
3161 | sid_len = get_length_sid (sid); | |
3162 | new_entry = xmalloc (offsetof (struct w32_id, sid) + sid_len); | |
3163 | if (new_entry) | |
3164 | { | |
3165 | new_entry->rid = id; | |
3166 | strcpy (new_entry->name, name); | |
3167 | copy_sid (sid_len, (PSID)new_entry->sid, sid); | |
3168 | new_entry->next = w32_idlist; | |
3169 | w32_idlist = new_entry; | |
3170 | } | |
3171 | } | |
3172 | } | |
3173 | ||
8aaaec6b EZ |
3174 | #define UID 1 |
3175 | #define GID 2 | |
3176 | ||
3177 | static int | |
3178 | get_name_and_id (PSECURITY_DESCRIPTOR psd, const char *fname, | |
22749e9a | 3179 | unsigned *id, char *nm, int what) |
8aaaec6b EZ |
3180 | { |
3181 | PSID sid = NULL; | |
3182 | char machine[MAX_COMPUTERNAME_LENGTH+1]; | |
3183 | BOOL dflt; | |
3184 | SID_NAME_USE ignore; | |
3185 | char name[UNLEN+1]; | |
3186 | DWORD name_len = sizeof (name); | |
3187 | char domain[1024]; | |
ed3751c8 | 3188 | DWORD domain_len = sizeof (domain); |
8aaaec6b EZ |
3189 | char *mp = NULL; |
3190 | int use_dflt = 0; | |
3191 | int result; | |
3192 | ||
3193 | if (what == UID) | |
3194 | result = get_security_descriptor_owner (psd, &sid, &dflt); | |
3195 | else if (what == GID) | |
3196 | result = get_security_descriptor_group (psd, &sid, &dflt); | |
3197 | else | |
3198 | result = 0; | |
3199 | ||
3200 | if (!result || !is_valid_sid (sid)) | |
3201 | use_dflt = 1; | |
f8b35b24 | 3202 | else if (!w32_cached_id (sid, id, nm)) |
8aaaec6b EZ |
3203 | { |
3204 | /* If FNAME is a UNC, we need to lookup account on the | |
3205 | specified machine. */ | |
3206 | if (IS_DIRECTORY_SEP (fname[0]) && IS_DIRECTORY_SEP (fname[1]) | |
3207 | && fname[2] != '\0') | |
3208 | { | |
3209 | const char *s; | |
3210 | char *p; | |
3211 | ||
3212 | for (s = fname + 2, p = machine; | |
3213 | *s && !IS_DIRECTORY_SEP (*s); s++, p++) | |
3214 | *p = *s; | |
3215 | *p = '\0'; | |
3216 | mp = machine; | |
3217 | } | |
3218 | ||
3219 | if (!lookup_account_sid (mp, sid, name, &name_len, | |
3220 | domain, &domain_len, &ignore) | |
3221 | || name_len > UNLEN+1) | |
3222 | use_dflt = 1; | |
3223 | else | |
3224 | { | |
3225 | *id = get_rid (sid); | |
3226 | strcpy (nm, name); | |
f8b35b24 | 3227 | w32_add_to_cache (sid, *id, name); |
8aaaec6b EZ |
3228 | } |
3229 | } | |
3230 | return use_dflt; | |
3231 | } | |
3232 | ||
3233 | static void | |
bedf4aab JB |
3234 | get_file_owner_and_group (PSECURITY_DESCRIPTOR psd, |
3235 | const char *fname, | |
3236 | struct stat *st) | |
8aaaec6b EZ |
3237 | { |
3238 | int dflt_usr = 0, dflt_grp = 0; | |
3239 | ||
3240 | if (!psd) | |
3241 | { | |
3242 | dflt_usr = 1; | |
3243 | dflt_grp = 1; | |
3244 | } | |
3245 | else | |
3246 | { | |
3247 | if (get_name_and_id (psd, fname, &st->st_uid, st->st_uname, UID)) | |
3248 | dflt_usr = 1; | |
3249 | if (get_name_and_id (psd, fname, &st->st_gid, st->st_gname, GID)) | |
3250 | dflt_grp = 1; | |
3251 | } | |
3252 | /* Consider files to belong to current user/group, if we cannot get | |
3253 | more accurate information. */ | |
3254 | if (dflt_usr) | |
3255 | { | |
3256 | st->st_uid = dflt_passwd.pw_uid; | |
3257 | strcpy (st->st_uname, dflt_passwd.pw_name); | |
3258 | } | |
3259 | if (dflt_grp) | |
3260 | { | |
3261 | st->st_gid = dflt_passwd.pw_gid; | |
3262 | strcpy (st->st_gname, dflt_group.gr_name); | |
3263 | } | |
3264 | } | |
3265 | ||
be4c6380 EZ |
3266 | /* Return non-zero if NAME is a potentially slow filesystem. */ |
3267 | int | |
3268 | is_slow_fs (const char *name) | |
3269 | { | |
3270 | char drive_root[4]; | |
3271 | UINT devtype; | |
3272 | ||
3273 | if (IS_DIRECTORY_SEP (name[0]) && IS_DIRECTORY_SEP (name[1])) | |
3274 | devtype = DRIVE_REMOTE; /* assume UNC name is remote */ | |
3275 | else if (!(strlen (name) >= 2 && IS_DEVICE_SEP (name[1]))) | |
3276 | devtype = GetDriveType (NULL); /* use root of current drive */ | |
3277 | else | |
3278 | { | |
3279 | /* GetDriveType needs the root directory of the drive. */ | |
3280 | strncpy (drive_root, name, 2); | |
3281 | drive_root[2] = '\\'; | |
3282 | drive_root[3] = '\0'; | |
3283 | devtype = GetDriveType (drive_root); | |
3284 | } | |
3285 | return !(devtype == DRIVE_FIXED || devtype == DRIVE_RAMDISK); | |
3286 | } | |
3287 | ||
480b0c5b GV |
3288 | /* MSVC stat function can't cope with UNC names and has other bugs, so |
3289 | replace it with our own. This also allows us to calculate consistent | |
3290 | inode values without hacks in the main Emacs code. */ | |
3291 | int | |
3292 | stat (const char * path, struct stat * buf) | |
3293 | { | |
eb9ea53f | 3294 | char *name, *r; |
480b0c5b GV |
3295 | WIN32_FIND_DATA wfd; |
3296 | HANDLE fh; | |
e3b88685 | 3297 | unsigned __int64 fake_inode; |
480b0c5b GV |
3298 | int permission; |
3299 | int len; | |
3300 | int rootdir = FALSE; | |
8aaaec6b | 3301 | PSECURITY_DESCRIPTOR psd = NULL; |
480b0c5b GV |
3302 | |
3303 | if (path == NULL || buf == NULL) | |
3304 | { | |
3305 | errno = EFAULT; | |
3306 | return -1; | |
3307 | } | |
3308 | ||
fbd6baed | 3309 | name = (char *) map_w32_filename (path, &path); |
22189f79 EZ |
3310 | /* Must be valid filename, no wild cards or other invalid |
3311 | characters. We use _mbspbrk to support multibyte strings that | |
3312 | might look to strpbrk as if they included literal *, ?, and other | |
3313 | characters mentioned below that are disallowed by Windows | |
3314 | filesystems. */ | |
3315 | if (_mbspbrk (name, "*?|<>\"")) | |
480b0c5b GV |
3316 | { |
3317 | errno = ENOENT; | |
3318 | return -1; | |
3319 | } | |
3320 | ||
eb9ea53f GV |
3321 | /* If name is "c:/.." or "/.." then stat "c:/" or "/". */ |
3322 | r = IS_DEVICE_SEP (name[1]) ? &name[2] : name; | |
3323 | if (IS_DIRECTORY_SEP (r[0]) && r[1] == '.' && r[2] == '.' && r[3] == '\0') | |
3324 | { | |
3325 | r[1] = r[2] = '\0'; | |
3326 | } | |
3327 | ||
480b0c5b GV |
3328 | /* Remove trailing directory separator, unless name is the root |
3329 | directory of a drive or UNC volume in which case ensure there | |
3330 | is a trailing separator. */ | |
3331 | len = strlen (name); | |
3332 | rootdir = (path >= name + len - 1 | |
3333 | && (IS_DIRECTORY_SEP (*path) || *path == 0)); | |
3334 | name = strcpy (alloca (len + 2), name); | |
3335 | ||
9d3355d1 GV |
3336 | if (is_unc_volume (name)) |
3337 | { | |
3338 | DWORD attrs = unc_volume_file_attributes (name); | |
3339 | ||
3340 | if (attrs == -1) | |
3341 | return -1; | |
3342 | ||
3343 | memset (&wfd, 0, sizeof (wfd)); | |
3344 | wfd.dwFileAttributes = attrs; | |
3345 | wfd.ftCreationTime = utc_base_ft; | |
3346 | wfd.ftLastAccessTime = utc_base_ft; | |
3347 | wfd.ftLastWriteTime = utc_base_ft; | |
3348 | strcpy (wfd.cFileName, name); | |
3349 | } | |
3350 | else if (rootdir) | |
480b0c5b GV |
3351 | { |
3352 | if (!IS_DIRECTORY_SEP (name[len-1])) | |
3353 | strcat (name, "\\"); | |
3354 | if (GetDriveType (name) < 2) | |
3355 | { | |
3356 | errno = ENOENT; | |
3357 | return -1; | |
3358 | } | |
3359 | memset (&wfd, 0, sizeof (wfd)); | |
3360 | wfd.dwFileAttributes = FILE_ATTRIBUTE_DIRECTORY; | |
3361 | wfd.ftCreationTime = utc_base_ft; | |
3362 | wfd.ftLastAccessTime = utc_base_ft; | |
3363 | wfd.ftLastWriteTime = utc_base_ft; | |
3364 | strcpy (wfd.cFileName, name); | |
3365 | } | |
3366 | else | |
3367 | { | |
3368 | if (IS_DIRECTORY_SEP (name[len-1])) | |
3369 | name[len - 1] = 0; | |
76b3903d GV |
3370 | |
3371 | /* (This is hacky, but helps when doing file completions on | |
3372 | network drives.) Optimize by using information available from | |
3373 | active readdir if possible. */ | |
b19cc00c GV |
3374 | len = strlen (dir_pathname); |
3375 | if (IS_DIRECTORY_SEP (dir_pathname[len-1])) | |
3376 | len--; | |
76b3903d | 3377 | if (dir_find_handle != INVALID_HANDLE_VALUE |
b19cc00c | 3378 | && strnicmp (name, dir_pathname, len) == 0 |
76b3903d | 3379 | && IS_DIRECTORY_SEP (name[len]) |
05131107 | 3380 | && xstrcasecmp (name + len + 1, dir_static.d_name) == 0) |
480b0c5b | 3381 | { |
76b3903d GV |
3382 | /* This was the last entry returned by readdir. */ |
3383 | wfd = dir_find_data; | |
3384 | } | |
3385 | else | |
3386 | { | |
513feaa5 | 3387 | logon_network_drive (name); |
302d7d54 | 3388 | |
76b3903d GV |
3389 | fh = FindFirstFile (name, &wfd); |
3390 | if (fh == INVALID_HANDLE_VALUE) | |
3391 | { | |
3392 | errno = ENOENT; | |
3393 | return -1; | |
3394 | } | |
3395 | FindClose (fh); | |
480b0c5b | 3396 | } |
480b0c5b GV |
3397 | } |
3398 | ||
8aaaec6b | 3399 | if (!(NILP (Vw32_get_true_file_attributes) |
19ced600 | 3400 | || (EQ (Vw32_get_true_file_attributes, Qlocal) && is_slow_fs (name))) |
93e0f0da JR |
3401 | /* No access rights required to get info. */ |
3402 | && (fh = CreateFile (name, 0, 0, NULL, OPEN_EXISTING, | |
3403 | FILE_FLAG_BACKUP_SEMANTICS, NULL)) | |
3404 | != INVALID_HANDLE_VALUE) | |
480b0c5b | 3405 | { |
3ed8598c | 3406 | /* This is more accurate in terms of getting the correct number |
aa5ee2a3 | 3407 | of links, but is quite slow (it is noticeable when Emacs is |
480b0c5b GV |
3408 | making a list of file name completions). */ |
3409 | BY_HANDLE_FILE_INFORMATION info; | |
3410 | ||
480b0c5b GV |
3411 | if (GetFileInformationByHandle (fh, &info)) |
3412 | { | |
480b0c5b | 3413 | buf->st_nlink = info.nNumberOfLinks; |
76b3903d GV |
3414 | /* Might as well use file index to fake inode values, but this |
3415 | is not guaranteed to be unique unless we keep a handle open | |
3416 | all the time (even then there are situations where it is | |
3417 | not unique). Reputedly, there are at most 48 bits of info | |
3418 | (on NTFS, presumably less on FAT). */ | |
e3b88685 EZ |
3419 | fake_inode = info.nFileIndexHigh; |
3420 | fake_inode <<= 32; | |
3421 | fake_inode += info.nFileIndexLow; | |
480b0c5b GV |
3422 | } |
3423 | else | |
3424 | { | |
01f31dfb AI |
3425 | buf->st_nlink = 1; |
3426 | fake_inode = 0; | |
3427 | } | |
3428 | ||
93e0f0da | 3429 | if (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) |
01f31dfb | 3430 | { |
e3b88685 | 3431 | buf->st_mode = S_IFDIR; |
93e0f0da JR |
3432 | } |
3433 | else | |
3434 | { | |
3435 | switch (GetFileType (fh)) | |
3436 | { | |
3437 | case FILE_TYPE_DISK: | |
e3b88685 | 3438 | buf->st_mode = S_IFREG; |
93e0f0da JR |
3439 | break; |
3440 | case FILE_TYPE_PIPE: | |
e3b88685 | 3441 | buf->st_mode = S_IFIFO; |
93e0f0da JR |
3442 | break; |
3443 | case FILE_TYPE_CHAR: | |
3444 | case FILE_TYPE_UNKNOWN: | |
3445 | default: | |
e3b88685 | 3446 | buf->st_mode = S_IFCHR; |
93e0f0da | 3447 | } |
480b0c5b | 3448 | } |
01f31dfb | 3449 | CloseHandle (fh); |
8aaaec6b EZ |
3450 | psd = get_file_security_desc (name); |
3451 | get_file_owner_and_group (psd, name, buf); | |
76b3903d GV |
3452 | } |
3453 | else | |
3454 | { | |
3455 | /* Don't bother to make this information more accurate. */ | |
93e0f0da | 3456 | buf->st_mode = (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) ? |
e3b88685 | 3457 | S_IFDIR : S_IFREG; |
480b0c5b | 3458 | buf->st_nlink = 1; |
76b3903d | 3459 | fake_inode = 0; |
8aaaec6b EZ |
3460 | |
3461 | get_file_owner_and_group (NULL, name, buf); | |
76b3903d | 3462 | } |
70fdbb46 | 3463 | xfree (psd); |
76b3903d GV |
3464 | |
3465 | #if 0 | |
3466 | /* Not sure if there is any point in this. */ | |
3467 | if (!NILP (Vw32_generate_fake_inodes)) | |
3468 | fake_inode = generate_inode_val (name); | |
3469 | else if (fake_inode == 0) | |
3470 | { | |
3471 | /* For want of something better, try to make everything unique. */ | |
3472 | static DWORD gen_num = 0; | |
3473 | fake_inode = ++gen_num; | |
480b0c5b | 3474 | } |
76b3903d GV |
3475 | #endif |
3476 | ||
3477 | /* MSVC defines _ino_t to be short; other libc's might not. */ | |
3478 | if (sizeof (buf->st_ino) == 2) | |
3479 | buf->st_ino = fake_inode ^ (fake_inode >> 16); | |
3480 | else | |
3481 | buf->st_ino = fake_inode; | |
480b0c5b | 3482 | |
fbd6baed | 3483 | /* volume_info is set indirectly by map_w32_filename */ |
480b0c5b GV |
3484 | buf->st_dev = volume_info.serialnum; |
3485 | buf->st_rdev = volume_info.serialnum; | |
3486 | ||
8aaaec6b EZ |
3487 | buf->st_size = wfd.nFileSizeHigh; |
3488 | buf->st_size <<= 32; | |
3489 | buf->st_size += wfd.nFileSizeLow; | |
480b0c5b GV |
3490 | |
3491 | /* Convert timestamps to Unix format. */ | |
3492 | buf->st_mtime = convert_time (wfd.ftLastWriteTime); | |
3493 | buf->st_atime = convert_time (wfd.ftLastAccessTime); | |
3494 | if (buf->st_atime == 0) buf->st_atime = buf->st_mtime; | |
3495 | buf->st_ctime = convert_time (wfd.ftCreationTime); | |
3496 | if (buf->st_ctime == 0) buf->st_ctime = buf->st_mtime; | |
3497 | ||
3498 | /* determine rwx permissions */ | |
3499 | if (wfd.dwFileAttributes & FILE_ATTRIBUTE_READONLY) | |
e3b88685 | 3500 | permission = S_IREAD; |
480b0c5b | 3501 | else |
e3b88685 | 3502 | permission = S_IREAD | S_IWRITE; |
177c0ea7 | 3503 | |
480b0c5b | 3504 | if (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) |
e3b88685 | 3505 | permission |= S_IEXEC; |
b3308d2e | 3506 | else if (is_exec (name)) |
e3b88685 | 3507 | permission |= S_IEXEC; |
480b0c5b GV |
3508 | |
3509 | buf->st_mode |= permission | (permission >> 3) | (permission >> 6); | |
3510 | ||
3511 | return 0; | |
3512 | } | |
3513 | ||
16bb7578 GV |
3514 | /* Provide fstat and utime as well as stat for consistent handling of |
3515 | file timestamps. */ | |
3516 | int | |
3517 | fstat (int desc, struct stat * buf) | |
3518 | { | |
3519 | HANDLE fh = (HANDLE) _get_osfhandle (desc); | |
3520 | BY_HANDLE_FILE_INFORMATION info; | |
e3b88685 | 3521 | unsigned __int64 fake_inode; |
16bb7578 GV |
3522 | int permission; |
3523 | ||
3524 | switch (GetFileType (fh) & ~FILE_TYPE_REMOTE) | |
3525 | { | |
3526 | case FILE_TYPE_DISK: | |
e3b88685 | 3527 | buf->st_mode = S_IFREG; |
16bb7578 GV |
3528 | if (!GetFileInformationByHandle (fh, &info)) |
3529 | { | |
3530 | errno = EACCES; | |
3531 | return -1; | |
3532 | } | |
3533 | break; | |
3534 | case FILE_TYPE_PIPE: | |
e3b88685 | 3535 | buf->st_mode = S_IFIFO; |
16bb7578 GV |
3536 | goto non_disk; |
3537 | case FILE_TYPE_CHAR: | |
3538 | case FILE_TYPE_UNKNOWN: | |
3539 | default: | |
e3b88685 | 3540 | buf->st_mode = S_IFCHR; |
16bb7578 GV |
3541 | non_disk: |
3542 | memset (&info, 0, sizeof (info)); | |
3543 | info.dwFileAttributes = 0; | |
3544 | info.ftCreationTime = utc_base_ft; | |
3545 | info.ftLastAccessTime = utc_base_ft; | |
3546 | info.ftLastWriteTime = utc_base_ft; | |
3547 | } | |
3548 | ||
3549 | if (info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) | |
e3b88685 | 3550 | buf->st_mode = S_IFDIR; |
93e0f0da JR |
3551 | |
3552 | buf->st_nlink = info.nNumberOfLinks; | |
3553 | /* Might as well use file index to fake inode values, but this | |
3554 | is not guaranteed to be unique unless we keep a handle open | |
3555 | all the time (even then there are situations where it is | |
3556 | not unique). Reputedly, there are at most 48 bits of info | |
3557 | (on NTFS, presumably less on FAT). */ | |
e3b88685 EZ |
3558 | fake_inode = info.nFileIndexHigh; |
3559 | fake_inode <<= 32; | |
3560 | fake_inode += info.nFileIndexLow; | |
16bb7578 GV |
3561 | |
3562 | /* MSVC defines _ino_t to be short; other libc's might not. */ | |
3563 | if (sizeof (buf->st_ino) == 2) | |
3564 | buf->st_ino = fake_inode ^ (fake_inode >> 16); | |
3565 | else | |
3566 | buf->st_ino = fake_inode; | |
3567 | ||
8aaaec6b EZ |
3568 | /* Consider files to belong to current user. |
3569 | FIXME: this should use GetSecurityInfo API, but it is only | |
3570 | available for _WIN32_WINNT >= 0x501. */ | |
07f7980a EZ |
3571 | buf->st_uid = dflt_passwd.pw_uid; |
3572 | buf->st_gid = dflt_passwd.pw_gid; | |
8aaaec6b EZ |
3573 | strcpy (buf->st_uname, dflt_passwd.pw_name); |
3574 | strcpy (buf->st_gname, dflt_group.gr_name); | |
16bb7578 GV |
3575 | |
3576 | buf->st_dev = info.dwVolumeSerialNumber; | |
3577 | buf->st_rdev = info.dwVolumeSerialNumber; | |
3578 | ||
8aaaec6b EZ |
3579 | buf->st_size = info.nFileSizeHigh; |
3580 | buf->st_size <<= 32; | |
3581 | buf->st_size += info.nFileSizeLow; | |
16bb7578 GV |
3582 | |
3583 | /* Convert timestamps to Unix format. */ | |
3584 | buf->st_mtime = convert_time (info.ftLastWriteTime); | |
3585 | buf->st_atime = convert_time (info.ftLastAccessTime); | |
3586 | if (buf->st_atime == 0) buf->st_atime = buf->st_mtime; | |
3587 | buf->st_ctime = convert_time (info.ftCreationTime); | |
3588 | if (buf->st_ctime == 0) buf->st_ctime = buf->st_mtime; | |
3589 | ||
3590 | /* determine rwx permissions */ | |
3591 | if (info.dwFileAttributes & FILE_ATTRIBUTE_READONLY) | |
e3b88685 | 3592 | permission = S_IREAD; |
16bb7578 | 3593 | else |
e3b88685 | 3594 | permission = S_IREAD | S_IWRITE; |
177c0ea7 | 3595 | |
16bb7578 | 3596 | if (info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) |
e3b88685 | 3597 | permission |= S_IEXEC; |
16bb7578 GV |
3598 | else |
3599 | { | |
3600 | #if 0 /* no way of knowing the filename */ | |
3601 | char * p = strrchr (name, '.'); | |
3602 | if (p != NULL && | |
05131107 JR |
3603 | (xstrcasecmp (p, ".exe") == 0 || |
3604 | xstrcasecmp (p, ".com") == 0 || | |
3605 | xstrcasecmp (p, ".bat") == 0 || | |
3606 | xstrcasecmp (p, ".cmd") == 0)) | |
e3b88685 | 3607 | permission |= S_IEXEC; |
16bb7578 GV |
3608 | #endif |
3609 | } | |
3610 | ||
3611 | buf->st_mode |= permission | (permission >> 3) | (permission >> 6); | |
3612 | ||
3613 | return 0; | |
3614 | } | |
3615 | ||
3616 | int | |
3617 | utime (const char *name, struct utimbuf *times) | |
3618 | { | |
3619 | struct utimbuf deftime; | |
3620 | HANDLE fh; | |
3621 | FILETIME mtime; | |
3622 | FILETIME atime; | |
3623 | ||
3624 | if (times == NULL) | |
3625 | { | |
3626 | deftime.modtime = deftime.actime = time (NULL); | |
3627 | times = &deftime; | |
3628 | } | |
3629 | ||
3630 | /* Need write access to set times. */ | |
3631 | fh = CreateFile (name, GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, | |
3632 | 0, OPEN_EXISTING, 0, NULL); | |
3633 | if (fh) | |
3634 | { | |
3635 | convert_from_time_t (times->actime, &atime); | |
3636 | convert_from_time_t (times->modtime, &mtime); | |
3637 | if (!SetFileTime (fh, NULL, &atime, &mtime)) | |
3638 | { | |
3639 | CloseHandle (fh); | |
3640 | errno = EACCES; | |
3641 | return -1; | |
3642 | } | |
3643 | CloseHandle (fh); | |
3644 | } | |
3645 | else | |
3646 | { | |
3647 | errno = EINVAL; | |
3648 | return -1; | |
3649 | } | |
3650 | return 0; | |
3651 | } | |
3652 | ||
7c80d5ec | 3653 | \f |
973f782d EZ |
3654 | /* Symlink-related functions that always fail. Used in fileio.c and in |
3655 | sysdep.c to avoid #ifdef's. */ | |
0f7bb05d EZ |
3656 | int |
3657 | symlink (char const *dummy1, char const *dummy2) | |
3658 | { | |
3659 | errno = ENOSYS; | |
3660 | return -1; | |
3661 | } | |
3662 | ||
3663 | ssize_t | |
3664 | readlink (const char *name, char *dummy1, size_t dummy2) | |
3665 | { | |
3666 | /* `access' is much faster than `stat' on MS-Windows. */ | |
3667 | if (sys_access (name, 0) == 0) | |
3668 | errno = EINVAL; | |
3669 | return -1; | |
3670 | } | |
3671 | ||
973f782d EZ |
3672 | char * |
3673 | careadlinkat (int fd, char const *filename, | |
3674 | char *buffer, size_t buffer_size, | |
3675 | struct allocator const *alloc, | |
3676 | ssize_t (*preadlinkat) (int, char const *, char *, size_t)) | |
3677 | { | |
3678 | errno = ENOSYS; | |
3679 | return NULL; | |
3680 | } | |
3681 | ||
3682 | ssize_t | |
3683 | careadlinkatcwd (int fd, char const *filename, char *buffer, | |
3684 | size_t buffer_size) | |
3685 | { | |
3686 | (void) fd; | |
3687 | return readlink (filename, buffer, buffer_size); | |
3688 | } | |
3689 | ||
0f7bb05d | 3690 | \f |
7c80d5ec EZ |
3691 | /* Support for browsing other processes and their attributes. See |
3692 | process.c for the Lisp bindings. */ | |
3693 | ||
3694 | /* Helper wrapper functions. */ | |
3695 | ||
bedf4aab JB |
3696 | static HANDLE WINAPI |
3697 | create_toolhelp32_snapshot (DWORD Flags, DWORD Ignored) | |
7c80d5ec EZ |
3698 | { |
3699 | static CreateToolhelp32Snapshot_Proc s_pfn_Create_Toolhelp32_Snapshot = NULL; | |
3700 | ||
3701 | if (g_b_init_create_toolhelp32_snapshot == 0) | |
3702 | { | |
3703 | g_b_init_create_toolhelp32_snapshot = 1; | |
3704 | s_pfn_Create_Toolhelp32_Snapshot = (CreateToolhelp32Snapshot_Proc) | |
3705 | GetProcAddress (GetModuleHandle ("kernel32.dll"), | |
3706 | "CreateToolhelp32Snapshot"); | |
3707 | } | |
3708 | if (s_pfn_Create_Toolhelp32_Snapshot == NULL) | |
3709 | { | |
3710 | return INVALID_HANDLE_VALUE; | |
3711 | } | |
3712 | return (s_pfn_Create_Toolhelp32_Snapshot (Flags, Ignored)); | |
3713 | } | |
3714 | ||
bedf4aab JB |
3715 | static BOOL WINAPI |
3716 | process32_first (HANDLE hSnapshot, LPPROCESSENTRY32 lppe) | |
7c80d5ec EZ |
3717 | { |
3718 | static Process32First_Proc s_pfn_Process32_First = NULL; | |
3719 | ||
3720 | if (g_b_init_process32_first == 0) | |
3721 | { | |
3722 | g_b_init_process32_first = 1; | |
3723 | s_pfn_Process32_First = (Process32First_Proc) | |
3724 | GetProcAddress (GetModuleHandle ("kernel32.dll"), | |
3725 | "Process32First"); | |
3726 | } | |
3727 | if (s_pfn_Process32_First == NULL) | |
3728 | { | |
3729 | return FALSE; | |
3730 | } | |
3731 | return (s_pfn_Process32_First (hSnapshot, lppe)); | |
3732 | } | |
3733 | ||
bedf4aab JB |
3734 | static BOOL WINAPI |
3735 | process32_next (HANDLE hSnapshot, LPPROCESSENTRY32 lppe) | |
7c80d5ec EZ |
3736 | { |
3737 | static Process32Next_Proc s_pfn_Process32_Next = NULL; | |
3738 | ||
3739 | if (g_b_init_process32_next == 0) | |
3740 | { | |
3741 | g_b_init_process32_next = 1; | |
3742 | s_pfn_Process32_Next = (Process32Next_Proc) | |
3743 | GetProcAddress (GetModuleHandle ("kernel32.dll"), | |
3744 | "Process32Next"); | |
3745 | } | |
3746 | if (s_pfn_Process32_Next == NULL) | |
3747 | { | |
3748 | return FALSE; | |
3749 | } | |
3750 | return (s_pfn_Process32_Next (hSnapshot, lppe)); | |
3751 | } | |
3752 | ||
bedf4aab JB |
3753 | static BOOL WINAPI |
3754 | open_thread_token (HANDLE ThreadHandle, | |
3755 | DWORD DesiredAccess, | |
3756 | BOOL OpenAsSelf, | |
3757 | PHANDLE TokenHandle) | |
7c80d5ec EZ |
3758 | { |
3759 | static OpenThreadToken_Proc s_pfn_Open_Thread_Token = NULL; | |
3760 | HMODULE hm_advapi32 = NULL; | |
3761 | if (is_windows_9x () == TRUE) | |
3762 | { | |
3763 | SetLastError (ERROR_NOT_SUPPORTED); | |
3764 | return FALSE; | |
3765 | } | |
3766 | if (g_b_init_open_thread_token == 0) | |
3767 | { | |
3768 | g_b_init_open_thread_token = 1; | |
3769 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
3770 | s_pfn_Open_Thread_Token = | |
3771 | (OpenThreadToken_Proc) GetProcAddress (hm_advapi32, "OpenThreadToken"); | |
3772 | } | |
3773 | if (s_pfn_Open_Thread_Token == NULL) | |
3774 | { | |
3775 | SetLastError (ERROR_NOT_SUPPORTED); | |
3776 | return FALSE; | |
3777 | } | |
3778 | return ( | |
3779 | s_pfn_Open_Thread_Token ( | |
3780 | ThreadHandle, | |
3781 | DesiredAccess, | |
3782 | OpenAsSelf, | |
3783 | TokenHandle) | |
3784 | ); | |
3785 | } | |
3786 | ||
bedf4aab JB |
3787 | static BOOL WINAPI |
3788 | impersonate_self (SECURITY_IMPERSONATION_LEVEL ImpersonationLevel) | |
7c80d5ec EZ |
3789 | { |
3790 | static ImpersonateSelf_Proc s_pfn_Impersonate_Self = NULL; | |
3791 | HMODULE hm_advapi32 = NULL; | |
3792 | if (is_windows_9x () == TRUE) | |
3793 | { | |
3794 | return FALSE; | |
3795 | } | |
3796 | if (g_b_init_impersonate_self == 0) | |
3797 | { | |
3798 | g_b_init_impersonate_self = 1; | |
3799 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
3800 | s_pfn_Impersonate_Self = | |
3801 | (ImpersonateSelf_Proc) GetProcAddress (hm_advapi32, "ImpersonateSelf"); | |
3802 | } | |
3803 | if (s_pfn_Impersonate_Self == NULL) | |
3804 | { | |
3805 | return FALSE; | |
3806 | } | |
3807 | return s_pfn_Impersonate_Self (ImpersonationLevel); | |
3808 | } | |
3809 | ||
bedf4aab JB |
3810 | static BOOL WINAPI |
3811 | revert_to_self (void) | |
7c80d5ec EZ |
3812 | { |
3813 | static RevertToSelf_Proc s_pfn_Revert_To_Self = NULL; | |
3814 | HMODULE hm_advapi32 = NULL; | |
3815 | if (is_windows_9x () == TRUE) | |
3816 | { | |
3817 | return FALSE; | |
3818 | } | |
3819 | if (g_b_init_revert_to_self == 0) | |
3820 | { | |
3821 | g_b_init_revert_to_self = 1; | |
3822 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
3823 | s_pfn_Revert_To_Self = | |
3824 | (RevertToSelf_Proc) GetProcAddress (hm_advapi32, "RevertToSelf"); | |
3825 | } | |
3826 | if (s_pfn_Revert_To_Self == NULL) | |
3827 | { | |
3828 | return FALSE; | |
3829 | } | |
3830 | return s_pfn_Revert_To_Self (); | |
3831 | } | |
3832 | ||
bedf4aab JB |
3833 | static BOOL WINAPI |
3834 | get_process_memory_info (HANDLE h_proc, | |
3835 | PPROCESS_MEMORY_COUNTERS mem_counters, | |
3836 | DWORD bufsize) | |
7c80d5ec EZ |
3837 | { |
3838 | static GetProcessMemoryInfo_Proc s_pfn_Get_Process_Memory_Info = NULL; | |
3839 | HMODULE hm_psapi = NULL; | |
3840 | if (is_windows_9x () == TRUE) | |
3841 | { | |
3842 | return FALSE; | |
3843 | } | |
3844 | if (g_b_init_get_process_memory_info == 0) | |
3845 | { | |
3846 | g_b_init_get_process_memory_info = 1; | |
3847 | hm_psapi = LoadLibrary ("Psapi.dll"); | |
3848 | if (hm_psapi) | |
3849 | s_pfn_Get_Process_Memory_Info = (GetProcessMemoryInfo_Proc) | |
3850 | GetProcAddress (hm_psapi, "GetProcessMemoryInfo"); | |
3851 | } | |
3852 | if (s_pfn_Get_Process_Memory_Info == NULL) | |
3853 | { | |
3854 | return FALSE; | |
3855 | } | |
3856 | return s_pfn_Get_Process_Memory_Info (h_proc, mem_counters, bufsize); | |
3857 | } | |
3858 | ||
bedf4aab JB |
3859 | static BOOL WINAPI |
3860 | get_process_working_set_size (HANDLE h_proc, | |
3861 | DWORD *minrss, | |
3862 | DWORD *maxrss) | |
7c80d5ec EZ |
3863 | { |
3864 | static GetProcessWorkingSetSize_Proc | |
3865 | s_pfn_Get_Process_Working_Set_Size = NULL; | |
3866 | ||
3867 | if (is_windows_9x () == TRUE) | |
3868 | { | |
3869 | return FALSE; | |
3870 | } | |
3871 | if (g_b_init_get_process_working_set_size == 0) | |
3872 | { | |
3873 | g_b_init_get_process_working_set_size = 1; | |
3874 | s_pfn_Get_Process_Working_Set_Size = (GetProcessWorkingSetSize_Proc) | |
3875 | GetProcAddress (GetModuleHandle ("kernel32.dll"), | |
3876 | "GetProcessWorkingSetSize"); | |
3877 | } | |
3878 | if (s_pfn_Get_Process_Working_Set_Size == NULL) | |
3879 | { | |
3880 | return FALSE; | |
3881 | } | |
3882 | return s_pfn_Get_Process_Working_Set_Size (h_proc, minrss, maxrss); | |
3883 | } | |
3884 | ||
bedf4aab JB |
3885 | static BOOL WINAPI |
3886 | global_memory_status (MEMORYSTATUS *buf) | |
7c80d5ec EZ |
3887 | { |
3888 | static GlobalMemoryStatus_Proc s_pfn_Global_Memory_Status = NULL; | |
3889 | ||
3890 | if (is_windows_9x () == TRUE) | |
3891 | { | |
3892 | return FALSE; | |
3893 | } | |
3894 | if (g_b_init_global_memory_status == 0) | |
3895 | { | |
3896 | g_b_init_global_memory_status = 1; | |
3897 | s_pfn_Global_Memory_Status = (GlobalMemoryStatus_Proc) | |
3898 | GetProcAddress (GetModuleHandle ("kernel32.dll"), | |
3899 | "GlobalMemoryStatus"); | |
3900 | } | |
3901 | if (s_pfn_Global_Memory_Status == NULL) | |
3902 | { | |
3903 | return FALSE; | |
3904 | } | |
3905 | return s_pfn_Global_Memory_Status (buf); | |
3906 | } | |
3907 | ||
bedf4aab JB |
3908 | static BOOL WINAPI |
3909 | global_memory_status_ex (MEMORY_STATUS_EX *buf) | |
7c80d5ec EZ |
3910 | { |
3911 | static GlobalMemoryStatusEx_Proc s_pfn_Global_Memory_Status_Ex = NULL; | |
3912 | ||
3913 | if (is_windows_9x () == TRUE) | |
3914 | { | |
3915 | return FALSE; | |
3916 | } | |
3917 | if (g_b_init_global_memory_status_ex == 0) | |
3918 | { | |
3919 | g_b_init_global_memory_status_ex = 1; | |
3920 | s_pfn_Global_Memory_Status_Ex = (GlobalMemoryStatusEx_Proc) | |
3921 | GetProcAddress (GetModuleHandle ("kernel32.dll"), | |
3922 | "GlobalMemoryStatusEx"); | |
3923 | } | |
3924 | if (s_pfn_Global_Memory_Status_Ex == NULL) | |
3925 | { | |
3926 | return FALSE; | |
3927 | } | |
3928 | return s_pfn_Global_Memory_Status_Ex (buf); | |
3929 | } | |
3930 | ||
3931 | Lisp_Object | |
b56ceb92 | 3932 | list_system_processes (void) |
7c80d5ec EZ |
3933 | { |
3934 | struct gcpro gcpro1; | |
3935 | Lisp_Object proclist = Qnil; | |
3936 | HANDLE h_snapshot; | |
3937 | ||
3938 | h_snapshot = create_toolhelp32_snapshot (TH32CS_SNAPPROCESS, 0); | |
3939 | ||
3940 | if (h_snapshot != INVALID_HANDLE_VALUE) | |
3941 | { | |
3942 | PROCESSENTRY32 proc_entry; | |
3943 | DWORD proc_id; | |
3944 | BOOL res; | |
3945 | ||
3946 | GCPRO1 (proclist); | |
3947 | ||
3948 | proc_entry.dwSize = sizeof (PROCESSENTRY32); | |
3949 | for (res = process32_first (h_snapshot, &proc_entry); res; | |
3950 | res = process32_next (h_snapshot, &proc_entry)) | |
3951 | { | |
3952 | proc_id = proc_entry.th32ProcessID; | |
3953 | proclist = Fcons (make_fixnum_or_float (proc_id), proclist); | |
3954 | } | |
3955 | ||
3956 | CloseHandle (h_snapshot); | |
3957 | UNGCPRO; | |
3958 | proclist = Fnreverse (proclist); | |
3959 | } | |
3960 | ||
3961 | return proclist; | |
3962 | } | |
3963 | ||
3964 | static int | |
3965 | enable_privilege (LPCTSTR priv_name, BOOL enable_p, TOKEN_PRIVILEGES *old_priv) | |
3966 | { | |
3967 | TOKEN_PRIVILEGES priv; | |
3968 | DWORD priv_size = sizeof (priv); | |
3969 | DWORD opriv_size = sizeof (*old_priv); | |
3970 | HANDLE h_token = NULL; | |
3971 | HANDLE h_thread = GetCurrentThread (); | |
3972 | int ret_val = 0; | |
3973 | BOOL res; | |
3974 | ||
3975 | res = open_thread_token (h_thread, | |
3976 | TOKEN_QUERY | TOKEN_ADJUST_PRIVILEGES, | |
3977 | FALSE, &h_token); | |
3978 | if (!res && GetLastError () == ERROR_NO_TOKEN) | |
3979 | { | |
3980 | if (impersonate_self (SecurityImpersonation)) | |
3981 | res = open_thread_token (h_thread, | |
3982 | TOKEN_QUERY | TOKEN_ADJUST_PRIVILEGES, | |
3983 | FALSE, &h_token); | |
3984 | } | |
3985 | if (res) | |
3986 | { | |
3987 | priv.PrivilegeCount = 1; | |
3988 | priv.Privileges[0].Attributes = enable_p ? SE_PRIVILEGE_ENABLED : 0; | |
3989 | LookupPrivilegeValue (NULL, priv_name, &priv.Privileges[0].Luid); | |
3990 | if (AdjustTokenPrivileges (h_token, FALSE, &priv, priv_size, | |
3991 | old_priv, &opriv_size) | |
3992 | && GetLastError () != ERROR_NOT_ALL_ASSIGNED) | |
3993 | ret_val = 1; | |
3994 | } | |
3995 | if (h_token) | |
3996 | CloseHandle (h_token); | |
3997 | ||
3998 | return ret_val; | |
3999 | } | |
4000 | ||
4001 | static int | |
4002 | restore_privilege (TOKEN_PRIVILEGES *priv) | |
4003 | { | |
4004 | DWORD priv_size = sizeof (*priv); | |
4005 | HANDLE h_token = NULL; | |
4006 | int ret_val = 0; | |
4007 | ||
4008 | if (open_thread_token (GetCurrentThread (), | |
4009 | TOKEN_QUERY | TOKEN_ADJUST_PRIVILEGES, | |
4010 | FALSE, &h_token)) | |
4011 | { | |
4012 | if (AdjustTokenPrivileges (h_token, FALSE, priv, priv_size, NULL, NULL) | |
4013 | && GetLastError () != ERROR_NOT_ALL_ASSIGNED) | |
4014 | ret_val = 1; | |
4015 | } | |
4016 | if (h_token) | |
4017 | CloseHandle (h_token); | |
4018 | ||
4019 | return ret_val; | |
4020 | } | |
4021 | ||
4022 | static Lisp_Object | |
b56ceb92 | 4023 | ltime (long time_sec, long time_usec) |
7c80d5ec EZ |
4024 | { |
4025 | return list3 (make_number ((time_sec >> 16) & 0xffff), | |
4026 | make_number (time_sec & 0xffff), | |
4027 | make_number (time_usec)); | |
4028 | } | |
4029 | ||
5da9424d JB |
4030 | #define U64_TO_LISP_TIME(time) ltime ((time) / 1000000L, (time) % 1000000L) |
4031 | ||
7c80d5ec | 4032 | static int |
b56ceb92 JB |
4033 | process_times (HANDLE h_proc, Lisp_Object *ctime, Lisp_Object *etime, |
4034 | Lisp_Object *stime, Lisp_Object *utime, Lisp_Object *ttime, | |
4035 | double *pcpu) | |
7c80d5ec EZ |
4036 | { |
4037 | FILETIME ft_creation, ft_exit, ft_kernel, ft_user, ft_current; | |
5da9424d | 4038 | ULONGLONG tem1, tem2, tem3, tem; |
7c80d5ec EZ |
4039 | |
4040 | if (!h_proc | |
4041 | || !get_process_times_fn | |
ed3751c8 JB |
4042 | || !(*get_process_times_fn) (h_proc, &ft_creation, &ft_exit, |
4043 | &ft_kernel, &ft_user)) | |
7c80d5ec EZ |
4044 | return 0; |
4045 | ||
4046 | GetSystemTimeAsFileTime (&ft_current); | |
4047 | ||
5da9424d JB |
4048 | FILETIME_TO_U64 (tem1, ft_kernel); |
4049 | tem1 /= 10L; | |
4050 | *stime = U64_TO_LISP_TIME (tem1); | |
4051 | ||
4052 | FILETIME_TO_U64 (tem2, ft_user); | |
4053 | tem2 /= 10L; | |
4054 | *utime = U64_TO_LISP_TIME (tem2); | |
4055 | ||
4056 | tem3 = tem1 + tem2; | |
4057 | *ttime = U64_TO_LISP_TIME (tem3); | |
4058 | ||
4059 | FILETIME_TO_U64 (tem, ft_creation); | |
3af03101 EZ |
4060 | /* Process no 4 (System) returns zero creation time. */ |
4061 | if (tem) | |
5da9424d JB |
4062 | tem = (tem - utc_base) / 10L; |
4063 | *ctime = U64_TO_LISP_TIME (tem); | |
4064 | ||
3af03101 | 4065 | if (tem) |
5da9424d JB |
4066 | { |
4067 | FILETIME_TO_U64 (tem3, ft_current); | |
4068 | tem = (tem3 - utc_base) / 10L - tem; | |
4069 | } | |
4070 | *etime = U64_TO_LISP_TIME (tem); | |
7c80d5ec | 4071 | |
3af03101 EZ |
4072 | if (tem) |
4073 | { | |
4074 | *pcpu = 100.0 * (tem1 + tem2) / tem; | |
4075 | if (*pcpu > 100) | |
4076 | *pcpu = 100.0; | |
4077 | } | |
4078 | else | |
4079 | *pcpu = 0; | |
4080 | ||
4081 | return 1; | |
7c80d5ec EZ |
4082 | } |
4083 | ||
4084 | Lisp_Object | |
b56ceb92 | 4085 | system_process_attributes (Lisp_Object pid) |
7c80d5ec EZ |
4086 | { |
4087 | struct gcpro gcpro1, gcpro2, gcpro3; | |
4088 | Lisp_Object attrs = Qnil; | |
4089 | Lisp_Object cmd_str, decoded_cmd, tem; | |
4090 | HANDLE h_snapshot, h_proc; | |
4091 | DWORD proc_id; | |
754a2d13 | 4092 | int found_proc = 0; |
7c80d5ec | 4093 | char uname[UNLEN+1], gname[GNLEN+1], domain[1025]; |
32cef06e | 4094 | DWORD ulength = sizeof (uname), dlength = sizeof (domain), needed; |
7c80d5ec EZ |
4095 | DWORD glength = sizeof (gname); |
4096 | HANDLE token = NULL; | |
4097 | SID_NAME_USE user_type; | |
32cef06e EZ |
4098 | unsigned char *buf = NULL; |
4099 | DWORD blen = 0; | |
7c80d5ec EZ |
4100 | TOKEN_USER user_token; |
4101 | TOKEN_PRIMARY_GROUP group_token; | |
22749e9a EZ |
4102 | unsigned euid; |
4103 | unsigned egid; | |
7c80d5ec EZ |
4104 | PROCESS_MEMORY_COUNTERS mem; |
4105 | PROCESS_MEMORY_COUNTERS_EX mem_ex; | |
4106 | DWORD minrss, maxrss; | |
4107 | MEMORYSTATUS memst; | |
b8526f6e | 4108 | MEMORY_STATUS_EX memstex; |
7c80d5ec | 4109 | double totphys = 0.0; |
031da700 | 4110 | Lisp_Object ctime, stime, utime, etime, ttime; |
7c80d5ec | 4111 | double pcpu; |
32cef06e | 4112 | BOOL result = FALSE; |
7c80d5ec EZ |
4113 | |
4114 | CHECK_NUMBER_OR_FLOAT (pid); | |
4115 | proc_id = FLOATP (pid) ? XFLOAT_DATA (pid) : XINT (pid); | |
4116 | ||
4117 | h_snapshot = create_toolhelp32_snapshot (TH32CS_SNAPPROCESS, 0); | |
4118 | ||
4119 | GCPRO3 (attrs, decoded_cmd, tem); | |
4120 | ||
4121 | if (h_snapshot != INVALID_HANDLE_VALUE) | |
4122 | { | |
4123 | PROCESSENTRY32 pe; | |
4124 | BOOL res; | |
4125 | ||
4126 | pe.dwSize = sizeof (PROCESSENTRY32); | |
4127 | for (res = process32_first (h_snapshot, &pe); res; | |
4128 | res = process32_next (h_snapshot, &pe)) | |
4129 | { | |
4130 | if (proc_id == pe.th32ProcessID) | |
4131 | { | |
4132 | if (proc_id == 0) | |
4133 | decoded_cmd = build_string ("Idle"); | |
4134 | else | |
4135 | { | |
4136 | /* Decode the command name from locale-specific | |
4137 | encoding. */ | |
4138 | cmd_str = make_unibyte_string (pe.szExeFile, | |
4139 | strlen (pe.szExeFile)); | |
4140 | decoded_cmd = | |
4141 | code_convert_string_norecord (cmd_str, | |
4142 | Vlocale_coding_system, 0); | |
4143 | } | |
4144 | attrs = Fcons (Fcons (Qcomm, decoded_cmd), attrs); | |
4145 | attrs = Fcons (Fcons (Qppid, | |
4146 | make_fixnum_or_float (pe.th32ParentProcessID)), | |
4147 | attrs); | |
4148 | attrs = Fcons (Fcons (Qpri, make_number (pe.pcPriClassBase)), | |
4149 | attrs); | |
4150 | attrs = Fcons (Fcons (Qthcount, | |
4151 | make_fixnum_or_float (pe.cntThreads)), | |
4152 | attrs); | |
754a2d13 | 4153 | found_proc = 1; |
7c80d5ec EZ |
4154 | break; |
4155 | } | |
4156 | } | |
4157 | ||
4158 | CloseHandle (h_snapshot); | |
4159 | } | |
4160 | ||
754a2d13 EZ |
4161 | if (!found_proc) |
4162 | { | |
4163 | UNGCPRO; | |
4164 | return Qnil; | |
4165 | } | |
4166 | ||
7c80d5ec EZ |
4167 | h_proc = OpenProcess (PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, |
4168 | FALSE, proc_id); | |
4169 | /* If we were denied a handle to the process, try again after | |
4170 | enabling the SeDebugPrivilege in our process. */ | |
4171 | if (!h_proc) | |
4172 | { | |
4173 | TOKEN_PRIVILEGES priv_current; | |
4174 | ||
4175 | if (enable_privilege (SE_DEBUG_NAME, TRUE, &priv_current)) | |
4176 | { | |
4177 | h_proc = OpenProcess (PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, | |
4178 | FALSE, proc_id); | |
4179 | restore_privilege (&priv_current); | |
4180 | revert_to_self (); | |
4181 | } | |
4182 | } | |
32cef06e | 4183 | if (h_proc) |
7c80d5ec | 4184 | { |
32cef06e EZ |
4185 | result = open_process_token (h_proc, TOKEN_QUERY, &token); |
4186 | if (result) | |
f8b35b24 | 4187 | { |
32cef06e EZ |
4188 | result = get_token_information (token, TokenUser, NULL, 0, &blen); |
4189 | if (!result && GetLastError () == ERROR_INSUFFICIENT_BUFFER) | |
4190 | { | |
4191 | buf = xmalloc (blen); | |
4192 | result = get_token_information (token, TokenUser, | |
4193 | (LPVOID)buf, blen, &needed); | |
4194 | if (result) | |
4195 | { | |
4196 | memcpy (&user_token, buf, sizeof (user_token)); | |
4197 | if (!w32_cached_id (user_token.User.Sid, &euid, uname)) | |
4198 | { | |
4199 | euid = get_rid (user_token.User.Sid); | |
4200 | result = lookup_account_sid (NULL, user_token.User.Sid, | |
4201 | uname, &ulength, | |
4202 | domain, &dlength, | |
4203 | &user_type); | |
4204 | if (result) | |
4205 | w32_add_to_cache (user_token.User.Sid, euid, uname); | |
4206 | else | |
4207 | { | |
4208 | strcpy (uname, "unknown"); | |
4209 | result = TRUE; | |
4210 | } | |
4211 | } | |
4212 | ulength = strlen (uname); | |
4213 | } | |
4214 | } | |
7c80d5ec | 4215 | } |
32cef06e | 4216 | if (result) |
7c80d5ec | 4217 | { |
32cef06e EZ |
4218 | /* Determine a reasonable euid and gid values. */ |
4219 | if (xstrcasecmp ("administrator", uname) == 0) | |
7c80d5ec | 4220 | { |
32cef06e EZ |
4221 | euid = 500; /* well-known Administrator uid */ |
4222 | egid = 513; /* well-known None gid */ | |
4223 | } | |
4224 | else | |
4225 | { | |
4226 | /* Get group id and name. */ | |
4227 | result = get_token_information (token, TokenPrimaryGroup, | |
4228 | (LPVOID)buf, blen, &needed); | |
4229 | if (!result && GetLastError () == ERROR_INSUFFICIENT_BUFFER) | |
f8b35b24 | 4230 | { |
32cef06e EZ |
4231 | buf = xrealloc (buf, blen = needed); |
4232 | result = get_token_information (token, TokenPrimaryGroup, | |
4233 | (LPVOID)buf, blen, &needed); | |
4234 | } | |
4235 | if (result) | |
4236 | { | |
4237 | memcpy (&group_token, buf, sizeof (group_token)); | |
4238 | if (!w32_cached_id (group_token.PrimaryGroup, &egid, gname)) | |
4239 | { | |
4240 | egid = get_rid (group_token.PrimaryGroup); | |
4241 | dlength = sizeof (domain); | |
4242 | result = | |
4243 | lookup_account_sid (NULL, group_token.PrimaryGroup, | |
4244 | gname, &glength, NULL, &dlength, | |
4245 | &user_type); | |
4246 | if (result) | |
4247 | w32_add_to_cache (group_token.PrimaryGroup, | |
4248 | egid, gname); | |
4249 | else | |
4250 | { | |
4251 | strcpy (gname, "None"); | |
4252 | result = TRUE; | |
4253 | } | |
4254 | } | |
4255 | glength = strlen (gname); | |
f8b35b24 | 4256 | } |
7c80d5ec | 4257 | } |
7c80d5ec | 4258 | } |
5f445726 | 4259 | xfree (buf); |
7c80d5ec | 4260 | } |
32cef06e | 4261 | if (!result) |
7c80d5ec | 4262 | { |
32cef06e EZ |
4263 | if (!is_windows_9x ()) |
4264 | { | |
4265 | /* We couldn't open the process token, presumably because of | |
4266 | insufficient access rights. Assume this process is run | |
4267 | by the system. */ | |
4268 | strcpy (uname, "SYSTEM"); | |
4269 | strcpy (gname, "None"); | |
4270 | euid = 18; /* SYSTEM */ | |
4271 | egid = 513; /* None */ | |
4272 | glength = strlen (gname); | |
4273 | ulength = strlen (uname); | |
4274 | } | |
4275 | /* If we are running under Windows 9X, where security calls are | |
4276 | not supported, we assume all processes are run by the current | |
4277 | user. */ | |
4278 | else if (GetUserName (uname, &ulength)) | |
4279 | { | |
4280 | if (xstrcasecmp ("administrator", uname) == 0) | |
4281 | euid = 0; | |
4282 | else | |
4283 | euid = 123; | |
4284 | egid = euid; | |
4285 | strcpy (gname, "None"); | |
4286 | glength = strlen (gname); | |
4287 | ulength = strlen (uname); | |
4288 | } | |
7c80d5ec | 4289 | else |
32cef06e EZ |
4290 | { |
4291 | euid = 123; | |
4292 | egid = 123; | |
4293 | strcpy (uname, "administrator"); | |
4294 | ulength = strlen (uname); | |
4295 | strcpy (gname, "None"); | |
4296 | glength = strlen (gname); | |
4297 | } | |
4298 | if (token) | |
4299 | CloseHandle (token); | |
7c80d5ec | 4300 | } |
7c80d5ec EZ |
4301 | |
4302 | attrs = Fcons (Fcons (Qeuid, make_fixnum_or_float (euid)), attrs); | |
4303 | tem = make_unibyte_string (uname, ulength); | |
4304 | attrs = Fcons (Fcons (Quser, | |
4305 | code_convert_string_norecord (tem, Vlocale_coding_system, 0)), | |
4306 | attrs); | |
4307 | attrs = Fcons (Fcons (Qegid, make_fixnum_or_float (egid)), attrs); | |
4308 | tem = make_unibyte_string (gname, glength); | |
4309 | attrs = Fcons (Fcons (Qgroup, | |
4310 | code_convert_string_norecord (tem, Vlocale_coding_system, 0)), | |
4311 | attrs); | |
4312 | ||
4313 | if (global_memory_status_ex (&memstex)) | |
235661f6 | 4314 | #if __GNUC__ || (defined (_MSC_VER) && _MSC_VER >= 1300) |
7c80d5ec | 4315 | totphys = memstex.ullTotalPhys / 1024.0; |
235661f6 EZ |
4316 | #else |
4317 | /* Visual Studio 6 cannot convert an unsigned __int64 type to | |
4318 | double, so we need to do this for it... */ | |
4319 | { | |
4320 | DWORD tot_hi = memstex.ullTotalPhys >> 32; | |
4321 | DWORD tot_md = (memstex.ullTotalPhys & 0x00000000ffffffff) >> 10; | |
4322 | DWORD tot_lo = memstex.ullTotalPhys % 1024; | |
4323 | ||
4324 | totphys = tot_hi * 4194304.0 + tot_md + tot_lo / 1024.0; | |
4325 | } | |
4326 | #endif /* __GNUC__ || _MSC_VER >= 1300 */ | |
7c80d5ec EZ |
4327 | else if (global_memory_status (&memst)) |
4328 | totphys = memst.dwTotalPhys / 1024.0; | |
4329 | ||
4330 | if (h_proc | |
4331 | && get_process_memory_info (h_proc, (PROCESS_MEMORY_COUNTERS *)&mem_ex, | |
4332 | sizeof (mem_ex))) | |
4333 | { | |
4334 | DWORD rss = mem_ex.WorkingSetSize / 1024; | |
4335 | ||
4336 | attrs = Fcons (Fcons (Qmajflt, | |
4337 | make_fixnum_or_float (mem_ex.PageFaultCount)), | |
4338 | attrs); | |
4339 | attrs = Fcons (Fcons (Qvsize, | |
4340 | make_fixnum_or_float (mem_ex.PrivateUsage / 1024)), | |
4341 | attrs); | |
4342 | attrs = Fcons (Fcons (Qrss, make_fixnum_or_float (rss)), attrs); | |
4343 | if (totphys) | |
4344 | attrs = Fcons (Fcons (Qpmem, make_float (100. * rss / totphys)), attrs); | |
4345 | } | |
4346 | else if (h_proc | |
4347 | && get_process_memory_info (h_proc, &mem, sizeof (mem))) | |
4348 | { | |
4349 | DWORD rss = mem_ex.WorkingSetSize / 1024; | |
4350 | ||
4351 | attrs = Fcons (Fcons (Qmajflt, | |
4352 | make_fixnum_or_float (mem.PageFaultCount)), | |
4353 | attrs); | |
4354 | attrs = Fcons (Fcons (Qrss, make_fixnum_or_float (rss)), attrs); | |
4355 | if (totphys) | |
4356 | attrs = Fcons (Fcons (Qpmem, make_float (100. * rss / totphys)), attrs); | |
4357 | } | |
4358 | else if (h_proc | |
4359 | && get_process_working_set_size (h_proc, &minrss, &maxrss)) | |
4360 | { | |
4361 | DWORD rss = maxrss / 1024; | |
4362 | ||
4363 | attrs = Fcons (Fcons (Qrss, make_fixnum_or_float (maxrss / 1024)), attrs); | |
4364 | if (totphys) | |
4365 | attrs = Fcons (Fcons (Qpmem, make_float (100. * rss / totphys)), attrs); | |
4366 | } | |
4367 | ||
031da700 | 4368 | if (process_times (h_proc, &ctime, &etime, &stime, &utime, &ttime, &pcpu)) |
7c80d5ec EZ |
4369 | { |
4370 | attrs = Fcons (Fcons (Qutime, utime), attrs); | |
4371 | attrs = Fcons (Fcons (Qstime, stime), attrs); | |
031da700 | 4372 | attrs = Fcons (Fcons (Qtime, ttime), attrs); |
7c80d5ec EZ |
4373 | attrs = Fcons (Fcons (Qstart, ctime), attrs); |
4374 | attrs = Fcons (Fcons (Qetime, etime), attrs); | |
4375 | attrs = Fcons (Fcons (Qpcpu, make_float (pcpu)), attrs); | |
4376 | } | |
4377 | ||
4378 | /* FIXME: Retrieve command line by walking the PEB of the process. */ | |
4379 | ||
4380 | if (h_proc) | |
4381 | CloseHandle (h_proc); | |
4382 | UNGCPRO; | |
4383 | return attrs; | |
4384 | } | |
4385 | ||
4386 | \f | |
480b0c5b GV |
4387 | /* Wrappers for winsock functions to map between our file descriptors |
4388 | and winsock's handles; also set h_errno for convenience. | |
4389 | ||
4390 | To allow Emacs to run on systems which don't have winsock support | |
4391 | installed, we dynamically link to winsock on startup if present, and | |
4392 | otherwise provide the minimum necessary functionality | |
4393 | (eg. gethostname). */ | |
4394 | ||
4395 | /* function pointers for relevant socket functions */ | |
4396 | int (PASCAL *pfn_WSAStartup) (WORD wVersionRequired, LPWSADATA lpWSAData); | |
4397 | void (PASCAL *pfn_WSASetLastError) (int iError); | |
4398 | int (PASCAL *pfn_WSAGetLastError) (void); | |
26fb7bc4 | 4399 | int (PASCAL *pfn_WSAEventSelect) (SOCKET s, HANDLE hEventObject, long lNetworkEvents); |
64570b36 KS |
4400 | HANDLE (PASCAL *pfn_WSACreateEvent) (void); |
4401 | int (PASCAL *pfn_WSACloseEvent) (HANDLE hEvent); | |
480b0c5b GV |
4402 | int (PASCAL *pfn_socket) (int af, int type, int protocol); |
4403 | int (PASCAL *pfn_bind) (SOCKET s, const struct sockaddr *addr, int namelen); | |
4404 | int (PASCAL *pfn_connect) (SOCKET s, const struct sockaddr *addr, int namelen); | |
4405 | int (PASCAL *pfn_ioctlsocket) (SOCKET s, long cmd, u_long *argp); | |
4406 | int (PASCAL *pfn_recv) (SOCKET s, char * buf, int len, int flags); | |
4407 | int (PASCAL *pfn_send) (SOCKET s, const char * buf, int len, int flags); | |
4408 | int (PASCAL *pfn_closesocket) (SOCKET s); | |
4409 | int (PASCAL *pfn_shutdown) (SOCKET s, int how); | |
4410 | int (PASCAL *pfn_WSACleanup) (void); | |
4411 | ||
4412 | u_short (PASCAL *pfn_htons) (u_short hostshort); | |
4413 | u_short (PASCAL *pfn_ntohs) (u_short netshort); | |
4414 | unsigned long (PASCAL *pfn_inet_addr) (const char * cp); | |
4415 | int (PASCAL *pfn_gethostname) (char * name, int namelen); | |
4416 | struct hostent * (PASCAL *pfn_gethostbyname) (const char * name); | |
4417 | struct servent * (PASCAL *pfn_getservbyname) (const char * name, const char * proto); | |
ecd270eb | 4418 | int (PASCAL *pfn_getpeername) (SOCKET s, struct sockaddr *addr, int * namelen); |
962955c5 JR |
4419 | int (PASCAL *pfn_setsockopt) (SOCKET s, int level, int optname, |
4420 | const char * optval, int optlen); | |
4421 | int (PASCAL *pfn_listen) (SOCKET s, int backlog); | |
4422 | int (PASCAL *pfn_getsockname) (SOCKET s, struct sockaddr * name, | |
4423 | int * namelen); | |
4424 | SOCKET (PASCAL *pfn_accept) (SOCKET s, struct sockaddr * addr, int * addrlen); | |
4425 | int (PASCAL *pfn_recvfrom) (SOCKET s, char * buf, int len, int flags, | |
4426 | struct sockaddr * from, int * fromlen); | |
4427 | int (PASCAL *pfn_sendto) (SOCKET s, const char * buf, int len, int flags, | |
4428 | const struct sockaddr * to, int tolen); | |
4429 | ||
f1614061 RS |
4430 | /* SetHandleInformation is only needed to make sockets non-inheritable. */ |
4431 | BOOL (WINAPI *pfn_SetHandleInformation) (HANDLE object, DWORD mask, DWORD flags); | |
4432 | #ifndef HANDLE_FLAG_INHERIT | |
4433 | #define HANDLE_FLAG_INHERIT 1 | |
4434 | #endif | |
480b0c5b | 4435 | |
f249a012 RS |
4436 | HANDLE winsock_lib; |
4437 | static int winsock_inuse; | |
480b0c5b | 4438 | |
f249a012 | 4439 | BOOL |
480b0c5b GV |
4440 | term_winsock (void) |
4441 | { | |
f249a012 | 4442 | if (winsock_lib != NULL && winsock_inuse == 0) |
480b0c5b | 4443 | { |
f249a012 RS |
4444 | /* Not sure what would cause WSAENETDOWN, or even if it can happen |
4445 | after WSAStartup returns successfully, but it seems reasonable | |
4446 | to allow unloading winsock anyway in that case. */ | |
4447 | if (pfn_WSACleanup () == 0 || | |
4448 | pfn_WSAGetLastError () == WSAENETDOWN) | |
4449 | { | |
4450 | if (FreeLibrary (winsock_lib)) | |
4451 | winsock_lib = NULL; | |
4452 | return TRUE; | |
4453 | } | |
480b0c5b | 4454 | } |
f249a012 | 4455 | return FALSE; |
480b0c5b GV |
4456 | } |
4457 | ||
f249a012 RS |
4458 | BOOL |
4459 | init_winsock (int load_now) | |
480b0c5b GV |
4460 | { |
4461 | WSADATA winsockData; | |
4462 | ||
f249a012 RS |
4463 | if (winsock_lib != NULL) |
4464 | return TRUE; | |
f1614061 | 4465 | |
f1614061 RS |
4466 | pfn_SetHandleInformation |
4467 | = (void *) GetProcAddress (GetModuleHandle ("kernel32.dll"), | |
4468 | "SetHandleInformation"); | |
4469 | ||
64570b36 | 4470 | winsock_lib = LoadLibrary ("Ws2_32.dll"); |
480b0c5b GV |
4471 | |
4472 | if (winsock_lib != NULL) | |
4473 | { | |
4474 | /* dynamically link to socket functions */ | |
4475 | ||
4476 | #define LOAD_PROC(fn) \ | |
4477 | if ((pfn_##fn = (void *) GetProcAddress (winsock_lib, #fn)) == NULL) \ | |
4478 | goto fail; | |
4479 | ||
ed3751c8 JB |
4480 | LOAD_PROC (WSAStartup); |
4481 | LOAD_PROC (WSASetLastError); | |
4482 | LOAD_PROC (WSAGetLastError); | |
4483 | LOAD_PROC (WSAEventSelect); | |
4484 | LOAD_PROC (WSACreateEvent); | |
4485 | LOAD_PROC (WSACloseEvent); | |
4486 | LOAD_PROC (socket); | |
4487 | LOAD_PROC (bind); | |
4488 | LOAD_PROC (connect); | |
4489 | LOAD_PROC (ioctlsocket); | |
4490 | LOAD_PROC (recv); | |
4491 | LOAD_PROC (send); | |
4492 | LOAD_PROC (closesocket); | |
4493 | LOAD_PROC (shutdown); | |
4494 | LOAD_PROC (htons); | |
4495 | LOAD_PROC (ntohs); | |
4496 | LOAD_PROC (inet_addr); | |
4497 | LOAD_PROC (gethostname); | |
4498 | LOAD_PROC (gethostbyname); | |
4499 | LOAD_PROC (getservbyname); | |
4500 | LOAD_PROC (getpeername); | |
4501 | LOAD_PROC (WSACleanup); | |
4502 | LOAD_PROC (setsockopt); | |
4503 | LOAD_PROC (listen); | |
4504 | LOAD_PROC (getsockname); | |
4505 | LOAD_PROC (accept); | |
4506 | LOAD_PROC (recvfrom); | |
4507 | LOAD_PROC (sendto); | |
f249a012 RS |
4508 | #undef LOAD_PROC |
4509 | ||
480b0c5b GV |
4510 | /* specify version 1.1 of winsock */ |
4511 | if (pfn_WSAStartup (0x101, &winsockData) == 0) | |
4512 | { | |
f249a012 RS |
4513 | if (winsockData.wVersion != 0x101) |
4514 | goto fail; | |
4515 | ||
4516 | if (!load_now) | |
4517 | { | |
4518 | /* Report that winsock exists and is usable, but leave | |
4519 | socket functions disabled. I am assuming that calling | |
4520 | WSAStartup does not require any network interaction, | |
4521 | and in particular does not cause or require a dial-up | |
4522 | connection to be established. */ | |
4523 | ||
4524 | pfn_WSACleanup (); | |
4525 | FreeLibrary (winsock_lib); | |
4526 | winsock_lib = NULL; | |
4527 | } | |
4528 | winsock_inuse = 0; | |
4529 | return TRUE; | |
480b0c5b GV |
4530 | } |
4531 | ||
4532 | fail: | |
4533 | FreeLibrary (winsock_lib); | |
f249a012 | 4534 | winsock_lib = NULL; |
480b0c5b | 4535 | } |
f249a012 RS |
4536 | |
4537 | return FALSE; | |
480b0c5b GV |
4538 | } |
4539 | ||
4540 | ||
4541 | int h_errno = 0; | |
4542 | ||
f8381794 | 4543 | /* function to set h_errno for compatibility; map winsock error codes to |
480b0c5b GV |
4544 | normal system codes where they overlap (non-overlapping definitions |
4545 | are already in <sys/socket.h> */ | |
9bfb11f9 | 4546 | static void |
b56ceb92 | 4547 | set_errno (void) |
480b0c5b | 4548 | { |
f249a012 | 4549 | if (winsock_lib == NULL) |
480b0c5b GV |
4550 | h_errno = EINVAL; |
4551 | else | |
4552 | h_errno = pfn_WSAGetLastError (); | |
4553 | ||
4554 | switch (h_errno) | |
4555 | { | |
4556 | case WSAEACCES: h_errno = EACCES; break; | |
4557 | case WSAEBADF: h_errno = EBADF; break; | |
4558 | case WSAEFAULT: h_errno = EFAULT; break; | |
4559 | case WSAEINTR: h_errno = EINTR; break; | |
4560 | case WSAEINVAL: h_errno = EINVAL; break; | |
4561 | case WSAEMFILE: h_errno = EMFILE; break; | |
4562 | case WSAENAMETOOLONG: h_errno = ENAMETOOLONG; break; | |
4563 | case WSAENOTEMPTY: h_errno = ENOTEMPTY; break; | |
4564 | } | |
4565 | errno = h_errno; | |
4566 | } | |
4567 | ||
9bfb11f9 | 4568 | static void |
b56ceb92 | 4569 | check_errno (void) |
480b0c5b | 4570 | { |
f249a012 | 4571 | if (h_errno == 0 && winsock_lib != NULL) |
480b0c5b GV |
4572 | pfn_WSASetLastError (0); |
4573 | } | |
4574 | ||
d8fcc1b9 AI |
4575 | /* Extend strerror to handle the winsock-specific error codes. */ |
4576 | struct { | |
4577 | int errnum; | |
4578 | char * msg; | |
4579 | } _wsa_errlist[] = { | |
1db5b1ad JB |
4580 | {WSAEINTR , "Interrupted function call"}, |
4581 | {WSAEBADF , "Bad file descriptor"}, | |
4582 | {WSAEACCES , "Permission denied"}, | |
4583 | {WSAEFAULT , "Bad address"}, | |
4584 | {WSAEINVAL , "Invalid argument"}, | |
4585 | {WSAEMFILE , "Too many open files"}, | |
4586 | ||
4587 | {WSAEWOULDBLOCK , "Resource temporarily unavailable"}, | |
4588 | {WSAEINPROGRESS , "Operation now in progress"}, | |
4589 | {WSAEALREADY , "Operation already in progress"}, | |
4590 | {WSAENOTSOCK , "Socket operation on non-socket"}, | |
4591 | {WSAEDESTADDRREQ , "Destination address required"}, | |
4592 | {WSAEMSGSIZE , "Message too long"}, | |
4593 | {WSAEPROTOTYPE , "Protocol wrong type for socket"}, | |
4594 | {WSAENOPROTOOPT , "Bad protocol option"}, | |
4595 | {WSAEPROTONOSUPPORT , "Protocol not supported"}, | |
4596 | {WSAESOCKTNOSUPPORT , "Socket type not supported"}, | |
4597 | {WSAEOPNOTSUPP , "Operation not supported"}, | |
4598 | {WSAEPFNOSUPPORT , "Protocol family not supported"}, | |
4599 | {WSAEAFNOSUPPORT , "Address family not supported by protocol family"}, | |
4600 | {WSAEADDRINUSE , "Address already in use"}, | |
4601 | {WSAEADDRNOTAVAIL , "Cannot assign requested address"}, | |
4602 | {WSAENETDOWN , "Network is down"}, | |
4603 | {WSAENETUNREACH , "Network is unreachable"}, | |
4604 | {WSAENETRESET , "Network dropped connection on reset"}, | |
4605 | {WSAECONNABORTED , "Software caused connection abort"}, | |
4606 | {WSAECONNRESET , "Connection reset by peer"}, | |
4607 | {WSAENOBUFS , "No buffer space available"}, | |
4608 | {WSAEISCONN , "Socket is already connected"}, | |
4609 | {WSAENOTCONN , "Socket is not connected"}, | |
4610 | {WSAESHUTDOWN , "Cannot send after socket shutdown"}, | |
4611 | {WSAETOOMANYREFS , "Too many references"}, /* not sure */ | |
4612 | {WSAETIMEDOUT , "Connection timed out"}, | |
4613 | {WSAECONNREFUSED , "Connection refused"}, | |
4614 | {WSAELOOP , "Network loop"}, /* not sure */ | |
4615 | {WSAENAMETOOLONG , "Name is too long"}, | |
4616 | {WSAEHOSTDOWN , "Host is down"}, | |
4617 | {WSAEHOSTUNREACH , "No route to host"}, | |
4618 | {WSAENOTEMPTY , "Buffer not empty"}, /* not sure */ | |
4619 | {WSAEPROCLIM , "Too many processes"}, | |
4620 | {WSAEUSERS , "Too many users"}, /* not sure */ | |
4621 | {WSAEDQUOT , "Double quote in host name"}, /* really not sure */ | |
4622 | {WSAESTALE , "Data is stale"}, /* not sure */ | |
4623 | {WSAEREMOTE , "Remote error"}, /* not sure */ | |
4624 | ||
4625 | {WSASYSNOTREADY , "Network subsystem is unavailable"}, | |
4626 | {WSAVERNOTSUPPORTED , "WINSOCK.DLL version out of range"}, | |
4627 | {WSANOTINITIALISED , "Winsock not initialized successfully"}, | |
4628 | {WSAEDISCON , "Graceful shutdown in progress"}, | |
d8fcc1b9 | 4629 | #ifdef WSAENOMORE |
1db5b1ad JB |
4630 | {WSAENOMORE , "No more operations allowed"}, /* not sure */ |
4631 | {WSAECANCELLED , "Operation cancelled"}, /* not sure */ | |
4632 | {WSAEINVALIDPROCTABLE , "Invalid procedure table from service provider"}, | |
4633 | {WSAEINVALIDPROVIDER , "Invalid service provider version number"}, | |
4634 | {WSAEPROVIDERFAILEDINIT , "Unable to initialize a service provider"}, | |
4635 | {WSASYSCALLFAILURE , "System call failure"}, | |
4636 | {WSASERVICE_NOT_FOUND , "Service not found"}, /* not sure */ | |
4637 | {WSATYPE_NOT_FOUND , "Class type not found"}, | |
4638 | {WSA_E_NO_MORE , "No more resources available"}, /* really not sure */ | |
4639 | {WSA_E_CANCELLED , "Operation already cancelled"}, /* really not sure */ | |
4640 | {WSAEREFUSED , "Operation refused"}, /* not sure */ | |
d8fcc1b9 | 4641 | #endif |
177c0ea7 | 4642 | |
1db5b1ad JB |
4643 | {WSAHOST_NOT_FOUND , "Host not found"}, |
4644 | {WSATRY_AGAIN , "Authoritative host not found during name lookup"}, | |
4645 | {WSANO_RECOVERY , "Non-recoverable error during name lookup"}, | |
4646 | {WSANO_DATA , "Valid name, no data record of requested type"}, | |
d8fcc1b9 | 4647 | |
1db5b1ad | 4648 | {-1, NULL} |
d8fcc1b9 AI |
4649 | }; |
4650 | ||
4651 | char * | |
ed3751c8 | 4652 | sys_strerror (int error_no) |
d8fcc1b9 AI |
4653 | { |
4654 | int i; | |
4655 | static char unknown_msg[40]; | |
4656 | ||
a302c7ae AI |
4657 | if (error_no >= 0 && error_no < sys_nerr) |
4658 | return sys_errlist[error_no]; | |
d8fcc1b9 AI |
4659 | |
4660 | for (i = 0; _wsa_errlist[i].errnum >= 0; i++) | |
4661 | if (_wsa_errlist[i].errnum == error_no) | |
4662 | return _wsa_errlist[i].msg; | |
4663 | ||
ed3751c8 | 4664 | sprintf (unknown_msg, "Unidentified error: %d", error_no); |
d8fcc1b9 AI |
4665 | return unknown_msg; |
4666 | } | |
4667 | ||
480b0c5b GV |
4668 | /* [andrewi 3-May-96] I've had conflicting results using both methods, |
4669 | but I believe the method of keeping the socket handle separate (and | |
4670 | insuring it is not inheritable) is the correct one. */ | |
4671 | ||
480b0c5b | 4672 | #define SOCK_HANDLE(fd) ((SOCKET) fd_info[fd].hnd) |
480b0c5b | 4673 | |
bedf4aab | 4674 | static int socket_to_fd (SOCKET s); |
962955c5 | 4675 | |
480b0c5b | 4676 | int |
ed3751c8 | 4677 | sys_socket (int af, int type, int protocol) |
480b0c5b | 4678 | { |
962955c5 | 4679 | SOCKET s; |
480b0c5b | 4680 | |
f249a012 | 4681 | if (winsock_lib == NULL) |
480b0c5b GV |
4682 | { |
4683 | h_errno = ENETDOWN; | |
4684 | return INVALID_SOCKET; | |
4685 | } | |
4686 | ||
4687 | check_errno (); | |
4688 | ||
4689 | /* call the real socket function */ | |
962955c5 | 4690 | s = pfn_socket (af, type, protocol); |
177c0ea7 | 4691 | |
480b0c5b | 4692 | if (s != INVALID_SOCKET) |
962955c5 | 4693 | return socket_to_fd (s); |
480b0c5b | 4694 | |
962955c5 JR |
4695 | set_errno (); |
4696 | return -1; | |
4697 | } | |
4698 | ||
4699 | /* Convert a SOCKET to a file descriptor. */ | |
bedf4aab | 4700 | static int |
962955c5 JR |
4701 | socket_to_fd (SOCKET s) |
4702 | { | |
4703 | int fd; | |
4704 | child_process * cp; | |
4705 | ||
4706 | /* Although under NT 3.5 _open_osfhandle will accept a socket | |
4707 | handle, if opened with SO_OPENTYPE == SO_SYNCHRONOUS_NONALERT, | |
4708 | that does not work under NT 3.1. However, we can get the same | |
4709 | effect by using a backdoor function to replace an existing | |
4710 | descriptor handle with the one we want. */ | |
4711 | ||
4712 | /* allocate a file descriptor (with appropriate flags) */ | |
4713 | fd = _open ("NUL:", _O_RDWR); | |
4714 | if (fd >= 0) | |
4715 | { | |
962955c5 JR |
4716 | /* Make a non-inheritable copy of the socket handle. Note |
4717 | that it is possible that sockets aren't actually kernel | |
4718 | handles, which appears to be the case on Windows 9x when | |
4719 | the MS Proxy winsock client is installed. */ | |
4720 | { | |
4721 | /* Apparently there is a bug in NT 3.51 with some service | |
4722 | packs, which prevents using DuplicateHandle to make a | |
4723 | socket handle non-inheritable (causes WSACleanup to | |
4724 | hang). The work-around is to use SetHandleInformation | |
4725 | instead if it is available and implemented. */ | |
4726 | if (pfn_SetHandleInformation) | |
480b0c5b | 4727 | { |
962955c5 JR |
4728 | pfn_SetHandleInformation ((HANDLE) s, HANDLE_FLAG_INHERIT, 0); |
4729 | } | |
4730 | else | |
4731 | { | |
4732 | HANDLE parent = GetCurrentProcess (); | |
4733 | HANDLE new_s = INVALID_HANDLE_VALUE; | |
4734 | ||
4735 | if (DuplicateHandle (parent, | |
4736 | (HANDLE) s, | |
4737 | parent, | |
4738 | &new_s, | |
4739 | 0, | |
4740 | FALSE, | |
4741 | DUPLICATE_SAME_ACCESS)) | |
f1614061 | 4742 | { |
962955c5 JR |
4743 | /* It is possible that DuplicateHandle succeeds even |
4744 | though the socket wasn't really a kernel handle, | |
4745 | because a real handle has the same value. So | |
4746 | test whether the new handle really is a socket. */ | |
4747 | long nonblocking = 0; | |
4748 | if (pfn_ioctlsocket ((SOCKET) new_s, FIONBIO, &nonblocking) == 0) | |
ca149beb | 4749 | { |
962955c5 JR |
4750 | pfn_closesocket (s); |
4751 | s = (SOCKET) new_s; | |
4752 | } | |
4753 | else | |
4754 | { | |
4755 | CloseHandle (new_s); | |
4756 | } | |
177c0ea7 | 4757 | } |
480b0c5b | 4758 | } |
962955c5 JR |
4759 | } |
4760 | fd_info[fd].hnd = (HANDLE) s; | |
480b0c5b | 4761 | |
962955c5 JR |
4762 | /* set our own internal flags */ |
4763 | fd_info[fd].flags = FILE_SOCKET | FILE_BINARY | FILE_READ | FILE_WRITE; | |
480b0c5b | 4764 | |
962955c5 JR |
4765 | cp = new_child (); |
4766 | if (cp) | |
4767 | { | |
4768 | cp->fd = fd; | |
4769 | cp->status = STATUS_READ_ACKNOWLEDGED; | |
480b0c5b | 4770 | |
962955c5 JR |
4771 | /* attach child_process to fd_info */ |
4772 | if (fd_info[ fd ].cp != NULL) | |
4773 | { | |
4774 | DebPrint (("sys_socket: fd_info[%d] apparently in use!\n", fd)); | |
4775 | abort (); | |
480b0c5b GV |
4776 | } |
4777 | ||
962955c5 JR |
4778 | fd_info[ fd ].cp = cp; |
4779 | ||
4780 | /* success! */ | |
4781 | winsock_inuse++; /* count open sockets */ | |
4782 | return fd; | |
480b0c5b | 4783 | } |
480b0c5b | 4784 | |
962955c5 JR |
4785 | /* clean up */ |
4786 | _close (fd); | |
4787 | } | |
4788 | pfn_closesocket (s); | |
4789 | h_errno = EMFILE; | |
480b0c5b GV |
4790 | return -1; |
4791 | } | |
4792 | ||
480b0c5b GV |
4793 | int |
4794 | sys_bind (int s, const struct sockaddr * addr, int namelen) | |
4795 | { | |
f249a012 | 4796 | if (winsock_lib == NULL) |
480b0c5b GV |
4797 | { |
4798 | h_errno = ENOTSOCK; | |
4799 | return SOCKET_ERROR; | |
4800 | } | |
4801 | ||
4802 | check_errno (); | |
4803 | if (fd_info[s].flags & FILE_SOCKET) | |
4804 | { | |
4805 | int rc = pfn_bind (SOCK_HANDLE (s), addr, namelen); | |
4806 | if (rc == SOCKET_ERROR) | |
4807 | set_errno (); | |
4808 | return rc; | |
4809 | } | |
4810 | h_errno = ENOTSOCK; | |
4811 | return SOCKET_ERROR; | |
4812 | } | |
4813 | ||
480b0c5b GV |
4814 | int |
4815 | sys_connect (int s, const struct sockaddr * name, int namelen) | |
4816 | { | |
f249a012 | 4817 | if (winsock_lib == NULL) |
480b0c5b GV |
4818 | { |
4819 | h_errno = ENOTSOCK; | |
4820 | return SOCKET_ERROR; | |
4821 | } | |
4822 | ||
4823 | check_errno (); | |
4824 | if (fd_info[s].flags & FILE_SOCKET) | |
4825 | { | |
4826 | int rc = pfn_connect (SOCK_HANDLE (s), name, namelen); | |
4827 | if (rc == SOCKET_ERROR) | |
4828 | set_errno (); | |
4829 | return rc; | |
4830 | } | |
4831 | h_errno = ENOTSOCK; | |
4832 | return SOCKET_ERROR; | |
4833 | } | |
4834 | ||
4835 | u_short | |
4836 | sys_htons (u_short hostshort) | |
4837 | { | |
f249a012 | 4838 | return (winsock_lib != NULL) ? |
480b0c5b GV |
4839 | pfn_htons (hostshort) : hostshort; |
4840 | } | |
4841 | ||
4842 | u_short | |
4843 | sys_ntohs (u_short netshort) | |
4844 | { | |
f249a012 | 4845 | return (winsock_lib != NULL) ? |
480b0c5b GV |
4846 | pfn_ntohs (netshort) : netshort; |
4847 | } | |
4848 | ||
4849 | unsigned long | |
4850 | sys_inet_addr (const char * cp) | |
4851 | { | |
f249a012 | 4852 | return (winsock_lib != NULL) ? |
480b0c5b GV |
4853 | pfn_inet_addr (cp) : INADDR_NONE; |
4854 | } | |
4855 | ||
4856 | int | |
4857 | sys_gethostname (char * name, int namelen) | |
4858 | { | |
f249a012 | 4859 | if (winsock_lib != NULL) |
480b0c5b GV |
4860 | return pfn_gethostname (name, namelen); |
4861 | ||
4862 | if (namelen > MAX_COMPUTERNAME_LENGTH) | |
a302c7ae | 4863 | return !GetComputerName (name, (DWORD *)&namelen); |
480b0c5b GV |
4864 | |
4865 | h_errno = EFAULT; | |
4866 | return SOCKET_ERROR; | |
4867 | } | |
4868 | ||
4869 | struct hostent * | |
ed3751c8 | 4870 | sys_gethostbyname (const char * name) |
480b0c5b GV |
4871 | { |
4872 | struct hostent * host; | |
4873 | ||
f249a012 | 4874 | if (winsock_lib == NULL) |
480b0c5b GV |
4875 | { |
4876 | h_errno = ENETDOWN; | |
4877 | return NULL; | |
4878 | } | |
4879 | ||
4880 | check_errno (); | |
4881 | host = pfn_gethostbyname (name); | |
4882 | if (!host) | |
4883 | set_errno (); | |
4884 | return host; | |
4885 | } | |
4886 | ||
4887 | struct servent * | |
ed3751c8 | 4888 | sys_getservbyname (const char * name, const char * proto) |
480b0c5b GV |
4889 | { |
4890 | struct servent * serv; | |
4891 | ||
f249a012 | 4892 | if (winsock_lib == NULL) |
480b0c5b GV |
4893 | { |
4894 | h_errno = ENETDOWN; | |
4895 | return NULL; | |
4896 | } | |
4897 | ||
4898 | check_errno (); | |
4899 | serv = pfn_getservbyname (name, proto); | |
4900 | if (!serv) | |
4901 | set_errno (); | |
4902 | return serv; | |
4903 | } | |
4904 | ||
ecd270eb JR |
4905 | int |
4906 | sys_getpeername (int s, struct sockaddr *addr, int * namelen) | |
4907 | { | |
4908 | if (winsock_lib == NULL) | |
4909 | { | |
4910 | h_errno = ENETDOWN; | |
4911 | return SOCKET_ERROR; | |
4912 | } | |
4913 | ||
4914 | check_errno (); | |
4915 | if (fd_info[s].flags & FILE_SOCKET) | |
4916 | { | |
4917 | int rc = pfn_getpeername (SOCK_HANDLE (s), addr, namelen); | |
4918 | if (rc == SOCKET_ERROR) | |
4919 | set_errno (); | |
4920 | return rc; | |
4921 | } | |
4922 | h_errno = ENOTSOCK; | |
4923 | return SOCKET_ERROR; | |
4924 | } | |
4925 | ||
380961a6 GV |
4926 | int |
4927 | sys_shutdown (int s, int how) | |
4928 | { | |
380961a6 GV |
4929 | if (winsock_lib == NULL) |
4930 | { | |
4931 | h_errno = ENETDOWN; | |
4932 | return SOCKET_ERROR; | |
4933 | } | |
4934 | ||
4935 | check_errno (); | |
4936 | if (fd_info[s].flags & FILE_SOCKET) | |
4937 | { | |
4938 | int rc = pfn_shutdown (SOCK_HANDLE (s), how); | |
962955c5 JR |
4939 | if (rc == SOCKET_ERROR) |
4940 | set_errno (); | |
4941 | return rc; | |
4942 | } | |
4943 | h_errno = ENOTSOCK; | |
4944 | return SOCKET_ERROR; | |
4945 | } | |
4946 | ||
4947 | int | |
a5a389bb | 4948 | sys_setsockopt (int s, int level, int optname, const void * optval, int optlen) |
962955c5 JR |
4949 | { |
4950 | if (winsock_lib == NULL) | |
4951 | { | |
4952 | h_errno = ENETDOWN; | |
4953 | return SOCKET_ERROR; | |
4954 | } | |
4955 | ||
4956 | check_errno (); | |
4957 | if (fd_info[s].flags & FILE_SOCKET) | |
4958 | { | |
4959 | int rc = pfn_setsockopt (SOCK_HANDLE (s), level, optname, | |
a5a389bb | 4960 | (const char *)optval, optlen); |
962955c5 JR |
4961 | if (rc == SOCKET_ERROR) |
4962 | set_errno (); | |
4963 | return rc; | |
4964 | } | |
4965 | h_errno = ENOTSOCK; | |
177c0ea7 | 4966 | return SOCKET_ERROR; |
962955c5 JR |
4967 | } |
4968 | ||
4969 | int | |
4970 | sys_listen (int s, int backlog) | |
4971 | { | |
4972 | if (winsock_lib == NULL) | |
4973 | { | |
4974 | h_errno = ENETDOWN; | |
4975 | return SOCKET_ERROR; | |
4976 | } | |
4977 | ||
4978 | check_errno (); | |
4979 | if (fd_info[s].flags & FILE_SOCKET) | |
4980 | { | |
4981 | int rc = pfn_listen (SOCK_HANDLE (s), backlog); | |
4982 | if (rc == SOCKET_ERROR) | |
4983 | set_errno (); | |
26fb7bc4 | 4984 | else |
64570b36 | 4985 | fd_info[s].flags |= FILE_LISTEN; |
962955c5 JR |
4986 | return rc; |
4987 | } | |
4988 | h_errno = ENOTSOCK; | |
177c0ea7 | 4989 | return SOCKET_ERROR; |
962955c5 JR |
4990 | } |
4991 | ||
4992 | int | |
4993 | sys_getsockname (int s, struct sockaddr * name, int * namelen) | |
4994 | { | |
4995 | if (winsock_lib == NULL) | |
4996 | { | |
4997 | h_errno = ENETDOWN; | |
4998 | return SOCKET_ERROR; | |
4999 | } | |
5000 | ||
5001 | check_errno (); | |
5002 | if (fd_info[s].flags & FILE_SOCKET) | |
5003 | { | |
5004 | int rc = pfn_getsockname (SOCK_HANDLE (s), name, namelen); | |
5005 | if (rc == SOCKET_ERROR) | |
5006 | set_errno (); | |
5007 | return rc; | |
5008 | } | |
5009 | h_errno = ENOTSOCK; | |
177c0ea7 | 5010 | return SOCKET_ERROR; |
962955c5 JR |
5011 | } |
5012 | ||
5013 | int | |
5014 | sys_accept (int s, struct sockaddr * addr, int * addrlen) | |
5015 | { | |
5016 | if (winsock_lib == NULL) | |
5017 | { | |
5018 | h_errno = ENETDOWN; | |
5019 | return -1; | |
5020 | } | |
5021 | ||
5022 | check_errno (); | |
26fb7bc4 | 5023 | if (fd_info[s].flags & FILE_LISTEN) |
962955c5 | 5024 | { |
a0ad1860 | 5025 | SOCKET t = pfn_accept (SOCK_HANDLE (s), addr, addrlen); |
64570b36 KS |
5026 | int fd = -1; |
5027 | if (t == INVALID_SOCKET) | |
5028 | set_errno (); | |
5029 | else | |
5030 | fd = socket_to_fd (t); | |
962955c5 | 5031 | |
64570b36 KS |
5032 | fd_info[s].cp->status = STATUS_READ_ACKNOWLEDGED; |
5033 | ResetEvent (fd_info[s].cp->char_avail); | |
5034 | return fd; | |
962955c5 JR |
5035 | } |
5036 | h_errno = ENOTSOCK; | |
5037 | return -1; | |
5038 | } | |
5039 | ||
5040 | int | |
5041 | sys_recvfrom (int s, char * buf, int len, int flags, | |
b56ceb92 | 5042 | struct sockaddr * from, int * fromlen) |
962955c5 JR |
5043 | { |
5044 | if (winsock_lib == NULL) | |
5045 | { | |
5046 | h_errno = ENETDOWN; | |
5047 | return SOCKET_ERROR; | |
5048 | } | |
5049 | ||
5050 | check_errno (); | |
5051 | if (fd_info[s].flags & FILE_SOCKET) | |
5052 | { | |
5053 | int rc = pfn_recvfrom (SOCK_HANDLE (s), buf, len, flags, from, fromlen); | |
5054 | if (rc == SOCKET_ERROR) | |
5055 | set_errno (); | |
5056 | return rc; | |
5057 | } | |
5058 | h_errno = ENOTSOCK; | |
5059 | return SOCKET_ERROR; | |
5060 | } | |
5061 | ||
5062 | int | |
5063 | sys_sendto (int s, const char * buf, int len, int flags, | |
5064 | const struct sockaddr * to, int tolen) | |
5065 | { | |
5066 | if (winsock_lib == NULL) | |
5067 | { | |
5068 | h_errno = ENETDOWN; | |
5069 | return SOCKET_ERROR; | |
5070 | } | |
5071 | ||
5072 | check_errno (); | |
5073 | if (fd_info[s].flags & FILE_SOCKET) | |
5074 | { | |
5075 | int rc = pfn_sendto (SOCK_HANDLE (s), buf, len, flags, to, tolen); | |
380961a6 GV |
5076 | if (rc == SOCKET_ERROR) |
5077 | set_errno (); | |
5078 | return rc; | |
5079 | } | |
5080 | h_errno = ENOTSOCK; | |
5081 | return SOCKET_ERROR; | |
5082 | } | |
5083 | ||
ecd270eb JR |
5084 | /* Windows does not have an fcntl function. Provide an implementation |
5085 | solely for making sockets non-blocking. */ | |
5086 | int | |
5087 | fcntl (int s, int cmd, int options) | |
5088 | { | |
5089 | if (winsock_lib == NULL) | |
5090 | { | |
5091 | h_errno = ENETDOWN; | |
5092 | return -1; | |
5093 | } | |
5094 | ||
5095 | check_errno (); | |
5096 | if (fd_info[s].flags & FILE_SOCKET) | |
5097 | { | |
5098 | if (cmd == F_SETFL && options == O_NDELAY) | |
5099 | { | |
5100 | unsigned long nblock = 1; | |
5101 | int rc = pfn_ioctlsocket (SOCK_HANDLE (s), FIONBIO, &nblock); | |
5102 | if (rc == SOCKET_ERROR) | |
9d4f32e8 | 5103 | set_errno (); |
ecd270eb JR |
5104 | /* Keep track of the fact that we set this to non-blocking. */ |
5105 | fd_info[s].flags |= FILE_NDELAY; | |
5106 | return rc; | |
5107 | } | |
5108 | else | |
5109 | { | |
5110 | h_errno = EINVAL; | |
5111 | return SOCKET_ERROR; | |
5112 | } | |
5113 | } | |
5114 | h_errno = ENOTSOCK; | |
5115 | return SOCKET_ERROR; | |
5116 | } | |
5117 | ||
480b0c5b GV |
5118 | |
5119 | /* Shadow main io functions: we need to handle pipes and sockets more | |
5120 | intelligently, and implement non-blocking mode as well. */ | |
5121 | ||
5122 | int | |
5123 | sys_close (int fd) | |
5124 | { | |
5125 | int rc; | |
5126 | ||
7559f399 | 5127 | if (fd < 0) |
480b0c5b GV |
5128 | { |
5129 | errno = EBADF; | |
5130 | return -1; | |
5131 | } | |
5132 | ||
7559f399 | 5133 | if (fd < MAXDESC && fd_info[fd].cp) |
480b0c5b GV |
5134 | { |
5135 | child_process * cp = fd_info[fd].cp; | |
5136 | ||
5137 | fd_info[fd].cp = NULL; | |
5138 | ||
5139 | if (CHILD_ACTIVE (cp)) | |
5140 | { | |
5141 | /* if last descriptor to active child_process then cleanup */ | |
5142 | int i; | |
5143 | for (i = 0; i < MAXDESC; i++) | |
5144 | { | |
5145 | if (i == fd) | |
5146 | continue; | |
5147 | if (fd_info[i].cp == cp) | |
5148 | break; | |
5149 | } | |
5150 | if (i == MAXDESC) | |
5151 | { | |
480b0c5b GV |
5152 | if (fd_info[fd].flags & FILE_SOCKET) |
5153 | { | |
f249a012 | 5154 | if (winsock_lib == NULL) abort (); |
480b0c5b GV |
5155 | |
5156 | pfn_shutdown (SOCK_HANDLE (fd), 2); | |
5157 | rc = pfn_closesocket (SOCK_HANDLE (fd)); | |
7d701334 | 5158 | |
f249a012 | 5159 | winsock_inuse--; /* count open sockets */ |
480b0c5b | 5160 | } |
480b0c5b GV |
5161 | delete_child (cp); |
5162 | } | |
5163 | } | |
5164 | } | |
5165 | ||
5166 | /* Note that sockets do not need special treatment here (at least on | |
e9e23e23 | 5167 | NT and Windows 95 using the standard tcp/ip stacks) - it appears that |
480b0c5b GV |
5168 | closesocket is equivalent to CloseHandle, which is to be expected |
5169 | because socket handles are fully fledged kernel handles. */ | |
5170 | rc = _close (fd); | |
5171 | ||
7559f399 | 5172 | if (rc == 0 && fd < MAXDESC) |
480b0c5b GV |
5173 | fd_info[fd].flags = 0; |
5174 | ||
5175 | return rc; | |
5176 | } | |
5177 | ||
5178 | int | |
5179 | sys_dup (int fd) | |
5180 | { | |
5181 | int new_fd; | |
5182 | ||
5183 | new_fd = _dup (fd); | |
7559f399 | 5184 | if (new_fd >= 0 && new_fd < MAXDESC) |
480b0c5b GV |
5185 | { |
5186 | /* duplicate our internal info as well */ | |
5187 | fd_info[new_fd] = fd_info[fd]; | |
5188 | } | |
5189 | return new_fd; | |
5190 | } | |
5191 | ||
480b0c5b GV |
5192 | int |
5193 | sys_dup2 (int src, int dst) | |
5194 | { | |
5195 | int rc; | |
5196 | ||
5197 | if (dst < 0 || dst >= MAXDESC) | |
5198 | { | |
5199 | errno = EBADF; | |
5200 | return -1; | |
5201 | } | |
5202 | ||
5203 | /* make sure we close the destination first if it's a pipe or socket */ | |
5204 | if (src != dst && fd_info[dst].flags != 0) | |
5205 | sys_close (dst); | |
177c0ea7 | 5206 | |
480b0c5b GV |
5207 | rc = _dup2 (src, dst); |
5208 | if (rc == 0) | |
5209 | { | |
5210 | /* duplicate our internal info as well */ | |
5211 | fd_info[dst] = fd_info[src]; | |
5212 | } | |
5213 | return rc; | |
5214 | } | |
5215 | ||
480b0c5b GV |
5216 | /* Unix pipe() has only one arg */ |
5217 | int | |
5218 | sys_pipe (int * phandles) | |
5219 | { | |
5220 | int rc; | |
5221 | unsigned flags; | |
480b0c5b | 5222 | |
76b3903d GV |
5223 | /* make pipe handles non-inheritable; when we spawn a child, we |
5224 | replace the relevant handle with an inheritable one. Also put | |
5225 | pipes into binary mode; we will do text mode translation ourselves | |
5226 | if required. */ | |
5227 | rc = _pipe (phandles, 0, _O_NOINHERIT | _O_BINARY); | |
480b0c5b GV |
5228 | |
5229 | if (rc == 0) | |
5230 | { | |
cb72110d JR |
5231 | /* Protect against overflow, since Windows can open more handles than |
5232 | our fd_info array has room for. */ | |
5233 | if (phandles[0] >= MAXDESC || phandles[1] >= MAXDESC) | |
5234 | { | |
5235 | _close (phandles[0]); | |
5236 | _close (phandles[1]); | |
5237 | rc = -1; | |
5238 | } | |
5239 | else | |
5240 | { | |
5241 | flags = FILE_PIPE | FILE_READ | FILE_BINARY; | |
5242 | fd_info[phandles[0]].flags = flags; | |
480b0c5b | 5243 | |
cb72110d JR |
5244 | flags = FILE_PIPE | FILE_WRITE | FILE_BINARY; |
5245 | fd_info[phandles[1]].flags = flags; | |
5246 | } | |
480b0c5b GV |
5247 | } |
5248 | ||
5249 | return rc; | |
5250 | } | |
5251 | ||
5252 | /* Function to do blocking read of one byte, needed to implement | |
5253 | select. It is only allowed on sockets and pipes. */ | |
5254 | int | |
5255 | _sys_read_ahead (int fd) | |
5256 | { | |
5257 | child_process * cp; | |
5258 | int rc; | |
5259 | ||
5260 | if (fd < 0 || fd >= MAXDESC) | |
5261 | return STATUS_READ_ERROR; | |
5262 | ||
5263 | cp = fd_info[fd].cp; | |
5264 | ||
5265 | if (cp == NULL || cp->fd != fd || cp->status != STATUS_READ_READY) | |
5266 | return STATUS_READ_ERROR; | |
5267 | ||
d888760c | 5268 | if ((fd_info[fd].flags & (FILE_PIPE | FILE_SERIAL | FILE_SOCKET)) == 0 |
480b0c5b GV |
5269 | || (fd_info[fd].flags & FILE_READ) == 0) |
5270 | { | |
d888760c | 5271 | DebPrint (("_sys_read_ahead: internal error: fd %d is not a pipe, serial port, or socket!\n", fd)); |
480b0c5b GV |
5272 | abort (); |
5273 | } | |
177c0ea7 | 5274 | |
480b0c5b | 5275 | cp->status = STATUS_READ_IN_PROGRESS; |
177c0ea7 | 5276 | |
480b0c5b | 5277 | if (fd_info[fd].flags & FILE_PIPE) |
f7554349 | 5278 | { |
f7554349 KH |
5279 | rc = _read (fd, &cp->chr, sizeof (char)); |
5280 | ||
5281 | /* Give subprocess time to buffer some more output for us before | |
e9e23e23 | 5282 | reporting that input is available; we need this because Windows 95 |
f7554349 KH |
5283 | connects DOS programs to pipes by making the pipe appear to be |
5284 | the normal console stdout - as a result most DOS programs will | |
d888760c | 5285 | write to stdout without buffering, ie. one character at a |
fbd6baed | 5286 | time. Even some W32 programs do this - "dir" in a command |
f7554349 KH |
5287 | shell on NT is very slow if we don't do this. */ |
5288 | if (rc > 0) | |
5289 | { | |
78806724 | 5290 | int wait = w32_pipe_read_delay; |
f7554349 KH |
5291 | |
5292 | if (wait > 0) | |
5293 | Sleep (wait); | |
5294 | else if (wait < 0) | |
5295 | while (++wait <= 0) | |
5296 | /* Yield remainder of our time slice, effectively giving a | |
5297 | temporary priority boost to the child process. */ | |
5298 | Sleep (0); | |
5299 | } | |
5300 | } | |
d888760c GM |
5301 | else if (fd_info[fd].flags & FILE_SERIAL) |
5302 | { | |
5303 | HANDLE hnd = fd_info[fd].hnd; | |
5304 | OVERLAPPED *ovl = &fd_info[fd].cp->ovl_read; | |
5305 | COMMTIMEOUTS ct; | |
5306 | ||
5307 | /* Configure timeouts for blocking read. */ | |
5308 | if (!GetCommTimeouts (hnd, &ct)) | |
5309 | return STATUS_READ_ERROR; | |
5310 | ct.ReadIntervalTimeout = 0; | |
5311 | ct.ReadTotalTimeoutMultiplier = 0; | |
5312 | ct.ReadTotalTimeoutConstant = 0; | |
5313 | if (!SetCommTimeouts (hnd, &ct)) | |
5314 | return STATUS_READ_ERROR; | |
5315 | ||
5316 | if (!ReadFile (hnd, &cp->chr, sizeof (char), (DWORD*) &rc, ovl)) | |
5317 | { | |
5318 | if (GetLastError () != ERROR_IO_PENDING) | |
5319 | return STATUS_READ_ERROR; | |
5320 | if (!GetOverlappedResult (hnd, ovl, (DWORD*) &rc, TRUE)) | |
5321 | return STATUS_READ_ERROR; | |
5322 | } | |
5323 | } | |
480b0c5b | 5324 | else if (fd_info[fd].flags & FILE_SOCKET) |
ecd270eb JR |
5325 | { |
5326 | unsigned long nblock = 0; | |
5327 | /* We always want this to block, so temporarily disable NDELAY. */ | |
5328 | if (fd_info[fd].flags & FILE_NDELAY) | |
5329 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONBIO, &nblock); | |
5330 | ||
5331 | rc = pfn_recv (SOCK_HANDLE (fd), &cp->chr, sizeof (char), 0); | |
5332 | ||
5333 | if (fd_info[fd].flags & FILE_NDELAY) | |
5334 | { | |
5335 | nblock = 1; | |
5336 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONBIO, &nblock); | |
5337 | } | |
5338 | } | |
177c0ea7 | 5339 | |
480b0c5b GV |
5340 | if (rc == sizeof (char)) |
5341 | cp->status = STATUS_READ_SUCCEEDED; | |
5342 | else | |
5343 | cp->status = STATUS_READ_FAILED; | |
5344 | ||
5345 | return cp->status; | |
5346 | } | |
5347 | ||
9bfb11f9 KS |
5348 | int |
5349 | _sys_wait_accept (int fd) | |
64570b36 KS |
5350 | { |
5351 | HANDLE hEv; | |
5352 | child_process * cp; | |
5353 | int rc; | |
5354 | ||
5355 | if (fd < 0 || fd >= MAXDESC) | |
5356 | return STATUS_READ_ERROR; | |
5357 | ||
5358 | cp = fd_info[fd].cp; | |
5359 | ||
5360 | if (cp == NULL || cp->fd != fd || cp->status != STATUS_READ_READY) | |
5361 | return STATUS_READ_ERROR; | |
5362 | ||
5363 | cp->status = STATUS_READ_FAILED; | |
5364 | ||
5365 | hEv = pfn_WSACreateEvent (); | |
5366 | rc = pfn_WSAEventSelect (SOCK_HANDLE (fd), hEv, FD_ACCEPT); | |
5367 | if (rc != SOCKET_ERROR) | |
5368 | { | |
5369 | rc = WaitForSingleObject (hEv, INFINITE); | |
5370 | pfn_WSAEventSelect (SOCK_HANDLE (fd), NULL, 0); | |
64570b36 KS |
5371 | if (rc == WAIT_OBJECT_0) |
5372 | cp->status = STATUS_READ_SUCCEEDED; | |
5373 | } | |
7046f191 | 5374 | pfn_WSACloseEvent (hEv); |
64570b36 KS |
5375 | |
5376 | return cp->status; | |
5377 | } | |
5378 | ||
480b0c5b GV |
5379 | int |
5380 | sys_read (int fd, char * buffer, unsigned int count) | |
5381 | { | |
5382 | int nchars; | |
480b0c5b GV |
5383 | int to_read; |
5384 | DWORD waiting; | |
76b3903d | 5385 | char * orig_buffer = buffer; |
480b0c5b | 5386 | |
7559f399 | 5387 | if (fd < 0) |
480b0c5b GV |
5388 | { |
5389 | errno = EBADF; | |
5390 | return -1; | |
5391 | } | |
5392 | ||
d888760c | 5393 | if (fd < MAXDESC && fd_info[fd].flags & (FILE_PIPE | FILE_SOCKET | FILE_SERIAL)) |
480b0c5b GV |
5394 | { |
5395 | child_process *cp = fd_info[fd].cp; | |
5396 | ||
5397 | if ((fd_info[fd].flags & FILE_READ) == 0) | |
5398 | { | |
5399 | errno = EBADF; | |
5400 | return -1; | |
5401 | } | |
5402 | ||
76b3903d GV |
5403 | nchars = 0; |
5404 | ||
5405 | /* re-read CR carried over from last read */ | |
5406 | if (fd_info[fd].flags & FILE_LAST_CR) | |
5407 | { | |
5408 | if (fd_info[fd].flags & FILE_BINARY) abort (); | |
5409 | *buffer++ = 0x0d; | |
5410 | count--; | |
5411 | nchars++; | |
f52eb3ef | 5412 | fd_info[fd].flags &= ~FILE_LAST_CR; |
76b3903d GV |
5413 | } |
5414 | ||
480b0c5b GV |
5415 | /* presence of a child_process structure means we are operating in |
5416 | non-blocking mode - otherwise we just call _read directly. | |
5417 | Note that the child_process structure might be missing because | |
5418 | reap_subprocess has been called; in this case the pipe is | |
5419 | already broken, so calling _read on it is okay. */ | |
5420 | if (cp) | |
5421 | { | |
5422 | int current_status = cp->status; | |
5423 | ||
5424 | switch (current_status) | |
5425 | { | |
5426 | case STATUS_READ_FAILED: | |
5427 | case STATUS_READ_ERROR: | |
f52eb3ef GV |
5428 | /* report normal EOF if nothing in buffer */ |
5429 | if (nchars <= 0) | |
5430 | fd_info[fd].flags |= FILE_AT_EOF; | |
5431 | return nchars; | |
480b0c5b GV |
5432 | |
5433 | case STATUS_READ_READY: | |
5434 | case STATUS_READ_IN_PROGRESS: | |
5435 | DebPrint (("sys_read called when read is in progress\n")); | |
5436 | errno = EWOULDBLOCK; | |
5437 | return -1; | |
5438 | ||
5439 | case STATUS_READ_SUCCEEDED: | |
5440 | /* consume read-ahead char */ | |
5441 | *buffer++ = cp->chr; | |
5442 | count--; | |
76b3903d | 5443 | nchars++; |
480b0c5b GV |
5444 | cp->status = STATUS_READ_ACKNOWLEDGED; |
5445 | ResetEvent (cp->char_avail); | |
5446 | ||
5447 | case STATUS_READ_ACKNOWLEDGED: | |
5448 | break; | |
5449 | ||
5450 | default: | |
5451 | DebPrint (("sys_read: bad status %d\n", current_status)); | |
5452 | errno = EBADF; | |
5453 | return -1; | |
5454 | } | |
5455 | ||
5456 | if (fd_info[fd].flags & FILE_PIPE) | |
5457 | { | |
5458 | PeekNamedPipe ((HANDLE) _get_osfhandle (fd), NULL, 0, NULL, &waiting, NULL); | |
5459 | to_read = min (waiting, (DWORD) count); | |
f52eb3ef GV |
5460 | |
5461 | if (to_read > 0) | |
5462 | nchars += _read (fd, buffer, to_read); | |
480b0c5b | 5463 | } |
d888760c GM |
5464 | else if (fd_info[fd].flags & FILE_SERIAL) |
5465 | { | |
5466 | HANDLE hnd = fd_info[fd].hnd; | |
5467 | OVERLAPPED *ovl = &fd_info[fd].cp->ovl_read; | |
d888760c GM |
5468 | int rc = 0; |
5469 | COMMTIMEOUTS ct; | |
5470 | ||
5471 | if (count > 0) | |
5472 | { | |
5473 | /* Configure timeouts for non-blocking read. */ | |
5474 | if (!GetCommTimeouts (hnd, &ct)) | |
5475 | { | |
5476 | errno = EIO; | |
5477 | return -1; | |
5478 | } | |
5479 | ct.ReadIntervalTimeout = MAXDWORD; | |
5480 | ct.ReadTotalTimeoutMultiplier = 0; | |
5481 | ct.ReadTotalTimeoutConstant = 0; | |
5482 | if (!SetCommTimeouts (hnd, &ct)) | |
5483 | { | |
5484 | errno = EIO; | |
5485 | return -1; | |
5486 | } | |
5487 | ||
5488 | if (!ResetEvent (ovl->hEvent)) | |
5489 | { | |
5490 | errno = EIO; | |
5491 | return -1; | |
5492 | } | |
5493 | if (!ReadFile (hnd, buffer, count, (DWORD*) &rc, ovl)) | |
5494 | { | |
5495 | if (GetLastError () != ERROR_IO_PENDING) | |
5496 | { | |
5497 | errno = EIO; | |
5498 | return -1; | |
5499 | } | |
5500 | if (!GetOverlappedResult (hnd, ovl, (DWORD*) &rc, TRUE)) | |
5501 | { | |
5502 | errno = EIO; | |
5503 | return -1; | |
5504 | } | |
5505 | } | |
5506 | nchars += rc; | |
5507 | } | |
5508 | } | |
480b0c5b GV |
5509 | else /* FILE_SOCKET */ |
5510 | { | |
f249a012 | 5511 | if (winsock_lib == NULL) abort (); |
480b0c5b GV |
5512 | |
5513 | /* do the equivalent of a non-blocking read */ | |
5514 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONREAD, &waiting); | |
76b3903d | 5515 | if (waiting == 0 && nchars == 0) |
480b0c5b GV |
5516 | { |
5517 | h_errno = errno = EWOULDBLOCK; | |
5518 | return -1; | |
5519 | } | |
5520 | ||
480b0c5b GV |
5521 | if (waiting) |
5522 | { | |
5523 | /* always use binary mode for sockets */ | |
76b3903d GV |
5524 | int res = pfn_recv (SOCK_HANDLE (fd), buffer, count, 0); |
5525 | if (res == SOCKET_ERROR) | |
480b0c5b | 5526 | { |
ed3751c8 JB |
5527 | DebPrint (("sys_read.recv failed with error %d on socket %ld\n", |
5528 | pfn_WSAGetLastError (), SOCK_HANDLE (fd))); | |
76b3903d GV |
5529 | set_errno (); |
5530 | return -1; | |
480b0c5b | 5531 | } |
76b3903d | 5532 | nchars += res; |
480b0c5b GV |
5533 | } |
5534 | } | |
480b0c5b GV |
5535 | } |
5536 | else | |
f52eb3ef GV |
5537 | { |
5538 | int nread = _read (fd, buffer, count); | |
5539 | if (nread >= 0) | |
5540 | nchars += nread; | |
5541 | else if (nchars == 0) | |
5542 | nchars = nread; | |
5543 | } | |
76b3903d | 5544 | |
f52eb3ef GV |
5545 | if (nchars <= 0) |
5546 | fd_info[fd].flags |= FILE_AT_EOF; | |
76b3903d | 5547 | /* Perform text mode translation if required. */ |
f52eb3ef | 5548 | else if ((fd_info[fd].flags & FILE_BINARY) == 0) |
76b3903d GV |
5549 | { |
5550 | nchars = crlf_to_lf (nchars, orig_buffer); | |
5551 | /* If buffer contains only CR, return that. To be absolutely | |
5552 | sure we should attempt to read the next char, but in | |
5553 | practice a CR to be followed by LF would not appear by | |
5554 | itself in the buffer. */ | |
5555 | if (nchars > 1 && orig_buffer[nchars - 1] == 0x0d) | |
5556 | { | |
5557 | fd_info[fd].flags |= FILE_LAST_CR; | |
5558 | nchars--; | |
5559 | } | |
76b3903d | 5560 | } |
480b0c5b GV |
5561 | } |
5562 | else | |
5563 | nchars = _read (fd, buffer, count); | |
5564 | ||
76b3903d | 5565 | return nchars; |
480b0c5b GV |
5566 | } |
5567 | ||
d888760c GM |
5568 | /* From w32xfns.c */ |
5569 | extern HANDLE interrupt_handle; | |
5570 | ||
480b0c5b GV |
5571 | /* For now, don't bother with a non-blocking mode */ |
5572 | int | |
5573 | sys_write (int fd, const void * buffer, unsigned int count) | |
5574 | { | |
5575 | int nchars; | |
5576 | ||
7559f399 | 5577 | if (fd < 0) |
480b0c5b GV |
5578 | { |
5579 | errno = EBADF; | |
5580 | return -1; | |
5581 | } | |
5582 | ||
d888760c | 5583 | if (fd < MAXDESC && fd_info[fd].flags & (FILE_PIPE | FILE_SOCKET | FILE_SERIAL)) |
76b3903d GV |
5584 | { |
5585 | if ((fd_info[fd].flags & FILE_WRITE) == 0) | |
5586 | { | |
5587 | errno = EBADF; | |
5588 | return -1; | |
5589 | } | |
5590 | ||
5591 | /* Perform text mode translation if required. */ | |
5592 | if ((fd_info[fd].flags & FILE_BINARY) == 0) | |
5593 | { | |
5594 | char * tmpbuf = alloca (count * 2); | |
5595 | unsigned char * src = (void *)buffer; | |
5596 | unsigned char * dst = tmpbuf; | |
5597 | int nbytes = count; | |
5598 | ||
5599 | while (1) | |
5600 | { | |
5601 | unsigned char *next; | |
5602 | /* copy next line or remaining bytes */ | |
5603 | next = _memccpy (dst, src, '\n', nbytes); | |
5604 | if (next) | |
5605 | { | |
5606 | /* copied one line ending with '\n' */ | |
5607 | int copied = next - dst; | |
5608 | nbytes -= copied; | |
5609 | src += copied; | |
5610 | /* insert '\r' before '\n' */ | |
5611 | next[-1] = '\r'; | |
5612 | next[0] = '\n'; | |
5613 | dst = next + 1; | |
5614 | count++; | |
177c0ea7 | 5615 | } |
76b3903d GV |
5616 | else |
5617 | /* copied remaining partial line -> now finished */ | |
5618 | break; | |
5619 | } | |
5620 | buffer = tmpbuf; | |
5621 | } | |
5622 | } | |
5623 | ||
d888760c GM |
5624 | if (fd < MAXDESC && fd_info[fd].flags & FILE_SERIAL) |
5625 | { | |
5626 | HANDLE hnd = (HANDLE) _get_osfhandle (fd); | |
5627 | OVERLAPPED *ovl = &fd_info[fd].cp->ovl_write; | |
5628 | HANDLE wait_hnd[2] = { interrupt_handle, ovl->hEvent }; | |
5629 | DWORD active = 0; | |
5630 | ||
5631 | if (!WriteFile (hnd, buffer, count, (DWORD*) &nchars, ovl)) | |
5632 | { | |
5633 | if (GetLastError () != ERROR_IO_PENDING) | |
5634 | { | |
5635 | errno = EIO; | |
5636 | return -1; | |
5637 | } | |
5638 | if (detect_input_pending ()) | |
5639 | active = MsgWaitForMultipleObjects (2, wait_hnd, FALSE, INFINITE, | |
5640 | QS_ALLINPUT); | |
5641 | else | |
5642 | active = WaitForMultipleObjects (2, wait_hnd, FALSE, INFINITE); | |
5643 | if (active == WAIT_OBJECT_0) | |
5644 | { /* User pressed C-g, cancel write, then leave. Don't bother | |
5645 | cleaning up as we may only get stuck in buggy drivers. */ | |
5646 | PurgeComm (hnd, PURGE_TXABORT | PURGE_TXCLEAR); | |
5647 | CancelIo (hnd); | |
5648 | errno = EIO; | |
5649 | return -1; | |
5650 | } | |
5651 | if (active == WAIT_OBJECT_0 + 1 | |
5652 | && !GetOverlappedResult (hnd, ovl, (DWORD*) &nchars, TRUE)) | |
5653 | { | |
5654 | errno = EIO; | |
5655 | return -1; | |
5656 | } | |
5657 | } | |
5658 | } | |
7d701334 | 5659 | else if (fd < MAXDESC && fd_info[fd].flags & FILE_SOCKET) |
480b0c5b | 5660 | { |
30a32e0e | 5661 | unsigned long nblock = 0; |
f249a012 | 5662 | if (winsock_lib == NULL) abort (); |
30a32e0e JR |
5663 | |
5664 | /* TODO: implement select() properly so non-blocking I/O works. */ | |
5665 | /* For now, make sure the write blocks. */ | |
5666 | if (fd_info[fd].flags & FILE_NDELAY) | |
5667 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONBIO, &nblock); | |
5668 | ||
480b0c5b | 5669 | nchars = pfn_send (SOCK_HANDLE (fd), buffer, count, 0); |
30a32e0e JR |
5670 | |
5671 | /* Set the socket back to non-blocking if it was before, | |
5672 | for other operations that support it. */ | |
5673 | if (fd_info[fd].flags & FILE_NDELAY) | |
5674 | { | |
5675 | nblock = 1; | |
5676 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONBIO, &nblock); | |
5677 | } | |
5678 | ||
480b0c5b GV |
5679 | if (nchars == SOCKET_ERROR) |
5680 | { | |
ed3751c8 JB |
5681 | DebPrint (("sys_write.send failed with error %d on socket %ld\n", |
5682 | pfn_WSAGetLastError (), SOCK_HANDLE (fd))); | |
480b0c5b GV |
5683 | set_errno (); |
5684 | } | |
5685 | } | |
5686 | else | |
6e83d800 EZ |
5687 | { |
5688 | /* Some networked filesystems don't like too large writes, so | |
5689 | break them into smaller chunks. See the Comments section of | |
5690 | the MSDN documentation of WriteFile for details behind the | |
5691 | choice of the value of CHUNK below. See also the thread | |
5692 | http://thread.gmane.org/gmane.comp.version-control.git/145294 | |
5693 | in the git mailing list. */ | |
5694 | const unsigned char *p = buffer; | |
5695 | const unsigned chunk = 30 * 1024 * 1024; | |
5696 | ||
5697 | nchars = 0; | |
5698 | while (count > 0) | |
5699 | { | |
5700 | unsigned this_chunk = count < chunk ? count : chunk; | |
5701 | int n = _write (fd, p, this_chunk); | |
5702 | ||
5703 | nchars += n; | |
5704 | if (n < 0) | |
5705 | { | |
5706 | nchars = n; | |
5707 | break; | |
5708 | } | |
5709 | else if (n < this_chunk) | |
5710 | break; | |
5711 | count -= n; | |
5712 | p += n; | |
5713 | } | |
5714 | } | |
480b0c5b GV |
5715 | |
5716 | return nchars; | |
5717 | } | |
5718 | ||
97a93095 EZ |
5719 | /* The Windows CRT functions are "optimized for speed", so they don't |
5720 | check for timezone and DST changes if they were last called less | |
5721 | than 1 minute ago (see http://support.microsoft.com/kb/821231). So | |
5722 | all Emacs features that repeatedly call time functions (e.g., | |
5723 | display-time) are in real danger of missing timezone and DST | |
5724 | changes. Calling tzset before each localtime call fixes that. */ | |
5725 | struct tm * | |
5726 | sys_localtime (const time_t *t) | |
5727 | { | |
5728 | tzset (); | |
5729 | return localtime (t); | |
5730 | } | |
5731 | ||
0898ca10 JB |
5732 | |
5733 | \f | |
5734 | /* Delayed loading of libraries. */ | |
5735 | ||
5736 | Lisp_Object Vlibrary_cache; | |
5737 | ||
5738 | /* The argument LIBRARIES is an alist that associates a symbol | |
5739 | LIBRARY_ID, identifying an external DLL library known to Emacs, to | |
5740 | a list of filenames under which the library is usually found. In | |
5741 | most cases, the argument passed as LIBRARIES is the variable | |
5742 | `dynamic-library-alist', which is initialized to a list of common | |
5743 | library names. If the function loads the library successfully, it | |
5744 | returns the handle of the DLL, and records the filename in the | |
5745 | property :loaded-from of LIBRARY_ID; it returns NULL if the library | |
5746 | could not be found, or when it was already loaded (because the | |
5747 | handle is not recorded anywhere, and so is lost after use). It | |
5748 | would be trivial to save the handle too in :loaded-from, but | |
5749 | currently there's no use case for it. */ | |
5750 | HMODULE | |
5751 | w32_delayed_load (Lisp_Object libraries, Lisp_Object library_id) | |
5752 | { | |
5753 | HMODULE library_dll = NULL; | |
5754 | ||
5755 | CHECK_SYMBOL (library_id); | |
5756 | ||
5757 | if (CONSP (libraries) && NILP (Fassq (library_id, Vlibrary_cache))) | |
5758 | { | |
5759 | Lisp_Object found = Qnil; | |
5760 | Lisp_Object dlls = Fassq (library_id, libraries); | |
5761 | ||
5762 | if (CONSP (dlls)) | |
5763 | for (dlls = XCDR (dlls); CONSP (dlls); dlls = XCDR (dlls)) | |
5764 | { | |
5765 | CHECK_STRING_CAR (dlls); | |
657d08d3 | 5766 | if ((library_dll = LoadLibrary (SDATA (XCAR (dlls))))) |
0898ca10 JB |
5767 | { |
5768 | found = XCAR (dlls); | |
5769 | break; | |
5770 | } | |
5771 | } | |
5772 | ||
5773 | Fput (library_id, QCloaded_from, found); | |
5774 | } | |
5775 | ||
5776 | return library_dll; | |
5777 | } | |
5778 | ||
5779 | \f | |
f52eb3ef | 5780 | static void |
b56ceb92 | 5781 | check_windows_init_file (void) |
f52eb3ef | 5782 | { |
f52eb3ef GV |
5783 | /* A common indication that Emacs is not installed properly is when |
5784 | it cannot find the Windows installation file. If this file does | |
5785 | not exist in the expected place, tell the user. */ | |
5786 | ||
c7aa8333 EZ |
5787 | if (!noninteractive && !inhibit_window_system |
5788 | /* Vload_path is not yet initialized when we are loading | |
5789 | loadup.el. */ | |
5790 | && NILP (Vpurify_flag)) | |
d54abccd | 5791 | { |
a0b9c838 | 5792 | Lisp_Object objs[2]; |
96ef7d42 | 5793 | Lisp_Object full_load_path; |
d54abccd GV |
5794 | Lisp_Object init_file; |
5795 | int fd; | |
f52eb3ef | 5796 | |
a0b9c838 GV |
5797 | objs[0] = Vload_path; |
5798 | objs[1] = decode_env_path (0, (getenv ("EMACSLOADPATH"))); | |
5799 | full_load_path = Fappend (2, objs); | |
d54abccd | 5800 | init_file = build_string ("term/w32-win"); |
c50a2aa6 | 5801 | fd = openp (full_load_path, init_file, Fget_load_suffixes (), NULL, Qnil); |
177c0ea7 | 5802 | if (fd < 0) |
d54abccd | 5803 | { |
96ef7d42 | 5804 | Lisp_Object load_path_print = Fprin1_to_string (full_load_path, Qnil); |
d5db4077 KR |
5805 | char *init_file_name = SDATA (init_file); |
5806 | char *load_path = SDATA (load_path_print); | |
acc23b87 KS |
5807 | char *buffer = alloca (1024 |
5808 | + strlen (init_file_name) | |
5809 | + strlen (load_path)); | |
d54abccd | 5810 | |
177c0ea7 | 5811 | sprintf (buffer, |
d54abccd GV |
5812 | "The Emacs Windows initialization file \"%s.el\" " |
5813 | "could not be found in your Emacs installation. " | |
5814 | "Emacs checked the following directories for this file:\n" | |
5815 | "\n%s\n\n" | |
5816 | "When Emacs cannot find this file, it usually means that it " | |
5817 | "was not installed properly, or its distribution file was " | |
5818 | "not unpacked properly.\nSee the README.W32 file in the " | |
5819 | "top-level Emacs directory for more information.", | |
5820 | init_file_name, load_path); | |
5821 | MessageBox (NULL, | |
5822 | buffer, | |
5823 | "Emacs Abort Dialog", | |
5824 | MB_OK | MB_ICONEXCLAMATION | MB_TASKMODAL); | |
f52eb3ef GV |
5825 | /* Use the low-level Emacs abort. */ |
5826 | #undef abort | |
d54abccd GV |
5827 | abort (); |
5828 | } | |
5829 | else | |
5830 | { | |
a302c7ae | 5831 | _close (fd); |
d54abccd | 5832 | } |
f52eb3ef | 5833 | } |
f52eb3ef | 5834 | } |
480b0c5b GV |
5835 | |
5836 | void | |
b56ceb92 | 5837 | term_ntproc (void) |
480b0c5b | 5838 | { |
480b0c5b GV |
5839 | /* shutdown the socket interface if necessary */ |
5840 | term_winsock (); | |
52c7f9ee JR |
5841 | |
5842 | term_w32select (); | |
480b0c5b GV |
5843 | } |
5844 | ||
5845 | void | |
b56ceb92 | 5846 | init_ntproc (void) |
480b0c5b | 5847 | { |
e1dbe924 | 5848 | /* Initialize the socket interface now if available and requested by |
f249a012 | 5849 | the user by defining PRELOAD_WINSOCK; otherwise loading will be |
fbd6baed | 5850 | delayed until open-network-stream is called (w32-has-winsock can |
f249a012 RS |
5851 | also be used to dynamically load or reload winsock). |
5852 | ||
5853 | Conveniently, init_environment is called before us, so | |
5854 | PRELOAD_WINSOCK can be set in the registry. */ | |
5855 | ||
5856 | /* Always initialize this correctly. */ | |
5857 | winsock_lib = NULL; | |
5858 | ||
5859 | if (getenv ("PRELOAD_WINSOCK") != NULL) | |
5860 | init_winsock (TRUE); | |
480b0c5b GV |
5861 | |
5862 | /* Initial preparation for subprocess support: replace our standard | |
5863 | handles with non-inheritable versions. */ | |
5864 | { | |
5865 | HANDLE parent; | |
5866 | HANDLE stdin_save = INVALID_HANDLE_VALUE; | |
5867 | HANDLE stdout_save = INVALID_HANDLE_VALUE; | |
5868 | HANDLE stderr_save = INVALID_HANDLE_VALUE; | |
5869 | ||
5870 | parent = GetCurrentProcess (); | |
5871 | ||
5872 | /* ignore errors when duplicating and closing; typically the | |
5873 | handles will be invalid when running as a gui program. */ | |
177c0ea7 JB |
5874 | DuplicateHandle (parent, |
5875 | GetStdHandle (STD_INPUT_HANDLE), | |
480b0c5b | 5876 | parent, |
177c0ea7 JB |
5877 | &stdin_save, |
5878 | 0, | |
5879 | FALSE, | |
480b0c5b | 5880 | DUPLICATE_SAME_ACCESS); |
177c0ea7 | 5881 | |
480b0c5b GV |
5882 | DuplicateHandle (parent, |
5883 | GetStdHandle (STD_OUTPUT_HANDLE), | |
5884 | parent, | |
5885 | &stdout_save, | |
5886 | 0, | |
5887 | FALSE, | |
5888 | DUPLICATE_SAME_ACCESS); | |
177c0ea7 | 5889 | |
480b0c5b GV |
5890 | DuplicateHandle (parent, |
5891 | GetStdHandle (STD_ERROR_HANDLE), | |
5892 | parent, | |
5893 | &stderr_save, | |
5894 | 0, | |
5895 | FALSE, | |
5896 | DUPLICATE_SAME_ACCESS); | |
177c0ea7 | 5897 | |
480b0c5b GV |
5898 | fclose (stdin); |
5899 | fclose (stdout); | |
5900 | fclose (stderr); | |
5901 | ||
5902 | if (stdin_save != INVALID_HANDLE_VALUE) | |
5903 | _open_osfhandle ((long) stdin_save, O_TEXT); | |
5904 | else | |
76b3903d GV |
5905 | _open ("nul", O_TEXT | O_NOINHERIT | O_RDONLY); |
5906 | _fdopen (0, "r"); | |
480b0c5b GV |
5907 | |
5908 | if (stdout_save != INVALID_HANDLE_VALUE) | |
5909 | _open_osfhandle ((long) stdout_save, O_TEXT); | |
5910 | else | |
76b3903d GV |
5911 | _open ("nul", O_TEXT | O_NOINHERIT | O_WRONLY); |
5912 | _fdopen (1, "w"); | |
480b0c5b GV |
5913 | |
5914 | if (stderr_save != INVALID_HANDLE_VALUE) | |
5915 | _open_osfhandle ((long) stderr_save, O_TEXT); | |
5916 | else | |
76b3903d GV |
5917 | _open ("nul", O_TEXT | O_NOINHERIT | O_WRONLY); |
5918 | _fdopen (2, "w"); | |
480b0c5b GV |
5919 | } |
5920 | ||
5921 | /* unfortunately, atexit depends on implementation of malloc */ | |
5922 | /* atexit (term_ntproc); */ | |
5923 | signal (SIGABRT, term_ntproc); | |
76b3903d GV |
5924 | |
5925 | /* determine which drives are fixed, for GetCachedVolumeInformation */ | |
5926 | { | |
5927 | /* GetDriveType must have trailing backslash. */ | |
5928 | char drive[] = "A:\\"; | |
5929 | ||
5930 | /* Loop over all possible drive letters */ | |
5931 | while (*drive <= 'Z') | |
5932 | { | |
5933 | /* Record if this drive letter refers to a fixed drive. */ | |
177c0ea7 | 5934 | fixed_drives[DRIVE_INDEX (*drive)] = |
76b3903d GV |
5935 | (GetDriveType (drive) == DRIVE_FIXED); |
5936 | ||
5937 | (*drive)++; | |
5938 | } | |
a302c7ae AI |
5939 | |
5940 | /* Reset the volume info cache. */ | |
5941 | volume_cache = NULL; | |
76b3903d | 5942 | } |
177c0ea7 | 5943 | |
d54abccd GV |
5944 | /* Check to see if Emacs has been installed correctly. */ |
5945 | check_windows_init_file (); | |
480b0c5b GV |
5946 | } |
5947 | ||
a8c3a596 JR |
5948 | /* |
5949 | shutdown_handler ensures that buffers' autosave files are | |
5950 | up to date when the user logs off, or the system shuts down. | |
5951 | */ | |
bedf4aab | 5952 | static BOOL WINAPI |
ed3751c8 | 5953 | shutdown_handler (DWORD type) |
a8c3a596 JR |
5954 | { |
5955 | /* Ctrl-C and Ctrl-Break are already suppressed, so don't handle them. */ | |
5956 | if (type == CTRL_CLOSE_EVENT /* User closes console window. */ | |
5957 | || type == CTRL_LOGOFF_EVENT /* User logs off. */ | |
5958 | || type == CTRL_SHUTDOWN_EVENT) /* User shutsdown. */ | |
5959 | { | |
5960 | /* Shut down cleanly, making sure autosave files are up to date. */ | |
5961 | shut_down_emacs (0, 0, Qnil); | |
5962 | } | |
5963 | ||
7046f191 | 5964 | /* Allow other handlers to handle this signal. */ |
a8c3a596 JR |
5965 | return FALSE; |
5966 | } | |
5967 | ||
9785d95b BK |
5968 | /* |
5969 | globals_of_w32 is used to initialize those global variables that | |
5970 | must always be initialized on startup even when the global variable | |
5971 | initialized is non zero (see the function main in emacs.c). | |
5972 | */ | |
9bfb11f9 | 5973 | void |
b56ceb92 | 5974 | globals_of_w32 (void) |
9785d95b | 5975 | { |
74258518 JR |
5976 | HMODULE kernel32 = GetModuleHandle ("kernel32.dll"); |
5977 | ||
5978 | get_process_times_fn = (GetProcessTimes_Proc) | |
5979 | GetProcAddress (kernel32, "GetProcessTimes"); | |
5980 | ||
cd3520a4 | 5981 | DEFSYM (QCloaded_from, ":loaded-from"); |
0898ca10 JB |
5982 | |
5983 | Vlibrary_cache = Qnil; | |
5984 | staticpro (&Vlibrary_cache); | |
5985 | ||
9785d95b BK |
5986 | g_b_init_is_windows_9x = 0; |
5987 | g_b_init_open_process_token = 0; | |
5988 | g_b_init_get_token_information = 0; | |
5989 | g_b_init_lookup_account_sid = 0; | |
9d95a291 EZ |
5990 | g_b_init_get_sid_sub_authority = 0; |
5991 | g_b_init_get_sid_sub_authority_count = 0; | |
8aaaec6b EZ |
5992 | g_b_init_get_file_security = 0; |
5993 | g_b_init_get_security_descriptor_owner = 0; | |
5994 | g_b_init_get_security_descriptor_group = 0; | |
5995 | g_b_init_is_valid_sid = 0; | |
7c80d5ec EZ |
5996 | g_b_init_create_toolhelp32_snapshot = 0; |
5997 | g_b_init_process32_first = 0; | |
5998 | g_b_init_process32_next = 0; | |
5999 | g_b_init_open_thread_token = 0; | |
6000 | g_b_init_impersonate_self = 0; | |
6001 | g_b_init_revert_to_self = 0; | |
6002 | g_b_init_get_process_memory_info = 0; | |
6003 | g_b_init_get_process_working_set_size = 0; | |
6004 | g_b_init_global_memory_status = 0; | |
6005 | g_b_init_global_memory_status_ex = 0; | |
f8b35b24 EZ |
6006 | g_b_init_equal_sid = 0; |
6007 | g_b_init_copy_sid = 0; | |
6008 | g_b_init_get_length_sid = 0; | |
ad9e2d54 EZ |
6009 | g_b_init_get_native_system_info = 0; |
6010 | g_b_init_get_system_times = 0; | |
6011 | num_of_processors = 0; | |
a8c3a596 JR |
6012 | /* The following sets a handler for shutdown notifications for |
6013 | console apps. This actually applies to Emacs in both console and | |
6014 | GUI modes, since we had to fool windows into thinking emacs is a | |
6015 | console application to get console mode to work. */ | |
ed3751c8 | 6016 | SetConsoleCtrlHandler (shutdown_handler, TRUE); |
8aaaec6b EZ |
6017 | |
6018 | /* "None" is the default group name on standalone workstations. */ | |
6019 | strcpy (dflt_group_name, "None"); | |
9785d95b BK |
6020 | } |
6021 | ||
d888760c | 6022 | /* For make-serial-process */ |
b56ceb92 JB |
6023 | int |
6024 | serial_open (char *port) | |
d888760c GM |
6025 | { |
6026 | HANDLE hnd; | |
6027 | child_process *cp; | |
6028 | int fd = -1; | |
6029 | ||
6030 | hnd = CreateFile (port, GENERIC_READ | GENERIC_WRITE, 0, 0, | |
6031 | OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0); | |
6032 | if (hnd == INVALID_HANDLE_VALUE) | |
6033 | error ("Could not open %s", port); | |
6034 | fd = (int) _open_osfhandle ((int) hnd, 0); | |
6035 | if (fd == -1) | |
6036 | error ("Could not open %s", port); | |
6037 | ||
6038 | cp = new_child (); | |
6039 | if (!cp) | |
6040 | error ("Could not create child process"); | |
6041 | cp->fd = fd; | |
6042 | cp->status = STATUS_READ_ACKNOWLEDGED; | |
6043 | fd_info[ fd ].hnd = hnd; | |
6044 | fd_info[ fd ].flags |= | |
6045 | FILE_READ | FILE_WRITE | FILE_BINARY | FILE_SERIAL; | |
6046 | if (fd_info[ fd ].cp != NULL) | |
6047 | { | |
6048 | error ("fd_info[fd = %d] is already in use", fd); | |
6049 | } | |
6050 | fd_info[ fd ].cp = cp; | |
6051 | cp->ovl_read.hEvent = CreateEvent (NULL, TRUE, FALSE, NULL); | |
6052 | if (cp->ovl_read.hEvent == NULL) | |
6053 | error ("Could not create read event"); | |
6054 | cp->ovl_write.hEvent = CreateEvent (NULL, TRUE, FALSE, NULL); | |
6055 | if (cp->ovl_write.hEvent == NULL) | |
6056 | error ("Could not create write event"); | |
6057 | ||
6058 | return fd; | |
6059 | } | |
6060 | ||
6061 | /* For serial-process-configure */ | |
6062 | void | |
9d4f32e8 | 6063 | serial_configure (struct Lisp_Process *p, Lisp_Object contact) |
d888760c GM |
6064 | { |
6065 | Lisp_Object childp2 = Qnil; | |
6066 | Lisp_Object tem = Qnil; | |
6067 | HANDLE hnd; | |
6068 | DCB dcb; | |
6069 | COMMTIMEOUTS ct; | |
6070 | char summary[4] = "???"; /* This usually becomes "8N1". */ | |
6071 | ||
6072 | if ((fd_info[ p->outfd ].flags & FILE_SERIAL) == 0) | |
6073 | error ("Not a serial process"); | |
6074 | hnd = fd_info[ p->outfd ].hnd; | |
6075 | ||
6076 | childp2 = Fcopy_sequence (p->childp); | |
6077 | ||
6078 | /* Initialize timeouts for blocking read and blocking write. */ | |
6079 | if (!GetCommTimeouts (hnd, &ct)) | |
6080 | error ("GetCommTimeouts() failed"); | |
6081 | ct.ReadIntervalTimeout = 0; | |
6082 | ct.ReadTotalTimeoutMultiplier = 0; | |
6083 | ct.ReadTotalTimeoutConstant = 0; | |
6084 | ct.WriteTotalTimeoutMultiplier = 0; | |
6085 | ct.WriteTotalTimeoutConstant = 0; | |
6086 | if (!SetCommTimeouts (hnd, &ct)) | |
6087 | error ("SetCommTimeouts() failed"); | |
6088 | /* Read port attributes and prepare default configuration. */ | |
6089 | memset (&dcb, 0, sizeof (dcb)); | |
6090 | dcb.DCBlength = sizeof (DCB); | |
6091 | if (!GetCommState (hnd, &dcb)) | |
6092 | error ("GetCommState() failed"); | |
6093 | dcb.fBinary = TRUE; | |
6094 | dcb.fNull = FALSE; | |
6095 | dcb.fAbortOnError = FALSE; | |
6096 | /* dcb.XonLim and dcb.XoffLim are set by GetCommState() */ | |
6097 | dcb.ErrorChar = 0; | |
6098 | dcb.EofChar = 0; | |
6099 | dcb.EvtChar = 0; | |
6100 | ||
6101 | /* Configure speed. */ | |
6102 | if (!NILP (Fplist_member (contact, QCspeed))) | |
6103 | tem = Fplist_get (contact, QCspeed); | |
6104 | else | |
6105 | tem = Fplist_get (p->childp, QCspeed); | |
6106 | CHECK_NUMBER (tem); | |
6107 | dcb.BaudRate = XINT (tem); | |
6108 | childp2 = Fplist_put (childp2, QCspeed, tem); | |
6109 | ||
6110 | /* Configure bytesize. */ | |
6111 | if (!NILP (Fplist_member (contact, QCbytesize))) | |
6112 | tem = Fplist_get (contact, QCbytesize); | |
6113 | else | |
6114 | tem = Fplist_get (p->childp, QCbytesize); | |
6115 | if (NILP (tem)) | |
6116 | tem = make_number (8); | |
6117 | CHECK_NUMBER (tem); | |
6118 | if (XINT (tem) != 7 && XINT (tem) != 8) | |
6119 | error (":bytesize must be nil (8), 7, or 8"); | |
6120 | dcb.ByteSize = XINT (tem); | |
6121 | summary[0] = XINT (tem) + '0'; | |
6122 | childp2 = Fplist_put (childp2, QCbytesize, tem); | |
6123 | ||
6124 | /* Configure parity. */ | |
6125 | if (!NILP (Fplist_member (contact, QCparity))) | |
6126 | tem = Fplist_get (contact, QCparity); | |
6127 | else | |
6128 | tem = Fplist_get (p->childp, QCparity); | |
6129 | if (!NILP (tem) && !EQ (tem, Qeven) && !EQ (tem, Qodd)) | |
6130 | error (":parity must be nil (no parity), `even', or `odd'"); | |
6131 | dcb.fParity = FALSE; | |
6132 | dcb.Parity = NOPARITY; | |
6133 | dcb.fErrorChar = FALSE; | |
6134 | if (NILP (tem)) | |
6135 | { | |
6136 | summary[1] = 'N'; | |
6137 | } | |
6138 | else if (EQ (tem, Qeven)) | |
6139 | { | |
6140 | summary[1] = 'E'; | |
6141 | dcb.fParity = TRUE; | |
6142 | dcb.Parity = EVENPARITY; | |
6143 | dcb.fErrorChar = TRUE; | |
6144 | } | |
6145 | else if (EQ (tem, Qodd)) | |
6146 | { | |
6147 | summary[1] = 'O'; | |
6148 | dcb.fParity = TRUE; | |
6149 | dcb.Parity = ODDPARITY; | |
6150 | dcb.fErrorChar = TRUE; | |
6151 | } | |
6152 | childp2 = Fplist_put (childp2, QCparity, tem); | |
6153 | ||
6154 | /* Configure stopbits. */ | |
6155 | if (!NILP (Fplist_member (contact, QCstopbits))) | |
6156 | tem = Fplist_get (contact, QCstopbits); | |
6157 | else | |
6158 | tem = Fplist_get (p->childp, QCstopbits); | |
6159 | if (NILP (tem)) | |
6160 | tem = make_number (1); | |
6161 | CHECK_NUMBER (tem); | |
6162 | if (XINT (tem) != 1 && XINT (tem) != 2) | |
6163 | error (":stopbits must be nil (1 stopbit), 1, or 2"); | |
6164 | summary[2] = XINT (tem) + '0'; | |
6165 | if (XINT (tem) == 1) | |
6166 | dcb.StopBits = ONESTOPBIT; | |
6167 | else if (XINT (tem) == 2) | |
6168 | dcb.StopBits = TWOSTOPBITS; | |
6169 | childp2 = Fplist_put (childp2, QCstopbits, tem); | |
6170 | ||
6171 | /* Configure flowcontrol. */ | |
6172 | if (!NILP (Fplist_member (contact, QCflowcontrol))) | |
6173 | tem = Fplist_get (contact, QCflowcontrol); | |
6174 | else | |
6175 | tem = Fplist_get (p->childp, QCflowcontrol); | |
6176 | if (!NILP (tem) && !EQ (tem, Qhw) && !EQ (tem, Qsw)) | |
6177 | error (":flowcontrol must be nil (no flowcontrol), `hw', or `sw'"); | |
6178 | dcb.fOutxCtsFlow = FALSE; | |
6179 | dcb.fOutxDsrFlow = FALSE; | |
6180 | dcb.fDtrControl = DTR_CONTROL_DISABLE; | |
6181 | dcb.fDsrSensitivity = FALSE; | |
6182 | dcb.fTXContinueOnXoff = FALSE; | |
6183 | dcb.fOutX = FALSE; | |
6184 | dcb.fInX = FALSE; | |
6185 | dcb.fRtsControl = RTS_CONTROL_DISABLE; | |
6186 | dcb.XonChar = 17; /* Control-Q */ | |
6187 | dcb.XoffChar = 19; /* Control-S */ | |
6188 | if (NILP (tem)) | |
6189 | { | |
6190 | /* Already configured. */ | |
6191 | } | |
6192 | else if (EQ (tem, Qhw)) | |
6193 | { | |
6194 | dcb.fRtsControl = RTS_CONTROL_HANDSHAKE; | |
6195 | dcb.fOutxCtsFlow = TRUE; | |
6196 | } | |
6197 | else if (EQ (tem, Qsw)) | |
6198 | { | |
6199 | dcb.fOutX = TRUE; | |
6200 | dcb.fInX = TRUE; | |
6201 | } | |
6202 | childp2 = Fplist_put (childp2, QCflowcontrol, tem); | |
6203 | ||
6204 | /* Activate configuration. */ | |
6205 | if (!SetCommState (hnd, &dcb)) | |
6206 | error ("SetCommState() failed"); | |
6207 | ||
6208 | childp2 = Fplist_put (childp2, QCsummary, build_string (summary)); | |
6209 | p->childp = childp2; | |
6210 | } | |
6211 | ||
e061a11b TZ |
6212 | #ifdef HAVE_GNUTLS |
6213 | ||
6214 | ssize_t | |
6215 | emacs_gnutls_pull (gnutls_transport_ptr_t p, void* buf, size_t sz) | |
6216 | { | |
6217 | int n, sc, err; | |
6218 | SELECT_TYPE fdset; | |
6219 | EMACS_TIME timeout; | |
6220 | struct Lisp_Process *process = (struct Lisp_Process *)p; | |
6221 | int fd = process->infd; | |
6222 | ||
6223 | for (;;) | |
6224 | { | |
5e617bc2 | 6225 | n = sys_read (fd, (char*)buf, sz); |
e061a11b TZ |
6226 | |
6227 | if (n >= 0) | |
6228 | return n; | |
6229 | ||
6230 | err = errno; | |
6231 | ||
6232 | if (err == EWOULDBLOCK) | |
6233 | { | |
6234 | /* Set a small timeout. */ | |
5e617bc2 | 6235 | EMACS_SET_SECS_USECS (timeout, 1, 0); |
e061a11b TZ |
6236 | FD_ZERO (&fdset); |
6237 | FD_SET ((int)fd, &fdset); | |
6238 | ||
6239 | /* Use select with the timeout to poll the selector. */ | |
6240 | sc = select (fd + 1, &fdset, (SELECT_TYPE *)0, (SELECT_TYPE *)0, | |
6241 | &timeout); | |
6242 | ||
6243 | if (sc > 0) | |
6244 | continue; /* Try again. */ | |
6245 | ||
6246 | /* Translate the WSAEWOULDBLOCK alias EWOULDBLOCK to EAGAIN. | |
6247 | Also accept select return 0 as an indicator to EAGAIN. */ | |
6248 | if (sc == 0 || errno == EWOULDBLOCK) | |
6249 | err = EAGAIN; | |
6250 | else | |
6251 | err = errno; /* Other errors are just passed on. */ | |
6252 | } | |
6253 | ||
0898ca10 | 6254 | emacs_gnutls_transport_set_errno (process->gnutls_state, err); |
e061a11b TZ |
6255 | |
6256 | return -1; | |
6257 | } | |
6258 | } | |
ab5796a9 | 6259 | |
e061a11b TZ |
6260 | ssize_t |
6261 | emacs_gnutls_push (gnutls_transport_ptr_t p, const void* buf, size_t sz) | |
6262 | { | |
6263 | struct Lisp_Process *process = (struct Lisp_Process *)p; | |
42ce4c63 | 6264 | int fd = process->outfd; |
5e617bc2 | 6265 | ssize_t n = sys_write (fd, buf, sz); |
e061a11b TZ |
6266 | |
6267 | /* 0 or more bytes written means everything went fine. */ | |
6268 | if (n >= 0) | |
6269 | return n; | |
6270 | ||
6271 | /* Negative bytes written means we got an error in errno. | |
6272 | Translate the WSAEWOULDBLOCK alias EWOULDBLOCK to EAGAIN. */ | |
0898ca10 JB |
6273 | emacs_gnutls_transport_set_errno (process->gnutls_state, |
6274 | errno == EWOULDBLOCK ? EAGAIN : errno); | |
e061a11b TZ |
6275 | |
6276 | return -1; | |
6277 | } | |
6278 | #endif /* HAVE_GNUTLS */ | |
6279 | ||
6280 | /* end of w32.c */ |