Commit | Line | Data |
---|---|---|
e9e23e23 | 1 | /* Utility and Unix shadow routines for GNU Emacs on the Microsoft W32 API. |
0b5538bd | 2 | Copyright (C) 1994, 1995, 2000, 2001, 2002, 2003, 2004, |
8cabe764 | 3 | 2005, 2006, 2007, 2008 Free Software Foundation, Inc. |
95ed0025 | 4 | |
3b7ad313 EN |
5 | This file is part of GNU Emacs. |
6 | ||
7 | GNU Emacs is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
684d6f5b | 9 | the Free Software Foundation; either version 3, or (at your option) |
3b7ad313 EN |
10 | any later version. |
11 | ||
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GNU Emacs; see the file COPYING. If not, write to | |
4fc5845f LK |
19 | the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
20 | Boston, MA 02110-1301, USA. | |
95ed0025 RS |
21 | |
22 | Geoff Voelker (voelker@cs.washington.edu) 7-29-94 | |
23 | */ | |
76b3903d | 24 | #include <stddef.h> /* for offsetof */ |
95ed0025 RS |
25 | #include <stdlib.h> |
26 | #include <stdio.h> | |
27 | #include <io.h> | |
480b0c5b | 28 | #include <errno.h> |
95ed0025 RS |
29 | #include <fcntl.h> |
30 | #include <ctype.h> | |
480b0c5b | 31 | #include <signal.h> |
b3308d2e | 32 | #include <sys/file.h> |
480b0c5b | 33 | #include <sys/time.h> |
16bb7578 | 34 | #include <sys/utime.h> |
22189f79 | 35 | #include <mbstring.h> /* for _mbspbrk */ |
480b0c5b GV |
36 | |
37 | /* must include CRT headers *before* config.h */ | |
4838e624 PJ |
38 | |
39 | #ifdef HAVE_CONFIG_H | |
40 | #include <config.h> | |
41 | #endif | |
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 | ||
95ed0025 | 66 | #include "lisp.h" |
95ed0025 RS |
67 | |
68 | #include <pwd.h> | |
3d19b645 | 69 | #include <grp.h> |
95ed0025 | 70 | |
971bce75 AI |
71 | #ifdef __GNUC__ |
72 | #define _ANONYMOUS_UNION | |
73 | #define _ANONYMOUS_STRUCT | |
74 | #endif | |
480b0c5b | 75 | #include <windows.h> |
634d3003 | 76 | #include <lmcons.h> |
2d5324c5 | 77 | #include <shlobj.h> |
00b3b7b3 | 78 | |
480b0c5b GV |
79 | #ifdef HAVE_SOCKETS /* TCP connection support, if kernel can do it */ |
80 | #include <sys/socket.h> | |
81 | #undef socket | |
82 | #undef bind | |
83 | #undef connect | |
84 | #undef htons | |
85 | #undef ntohs | |
86 | #undef inet_addr | |
87 | #undef gethostname | |
88 | #undef gethostbyname | |
89 | #undef getservbyname | |
ecd270eb | 90 | #undef getpeername |
380961a6 | 91 | #undef shutdown |
962955c5 JR |
92 | #undef setsockopt |
93 | #undef listen | |
94 | #undef getsockname | |
95 | #undef accept | |
96 | #undef recvfrom | |
97 | #undef sendto | |
480b0c5b | 98 | #endif |
00b3b7b3 | 99 | |
489f9371 | 100 | #include "w32.h" |
480b0c5b | 101 | #include "ndir.h" |
489f9371 | 102 | #include "w32heap.h" |
253574a6 JR |
103 | #include "systime.h" |
104 | ||
2d5324c5 JR |
105 | typedef HRESULT (WINAPI * ShGetFolderPath_fn) |
106 | (IN HWND, IN int, IN HANDLE, IN DWORD, OUT char *); | |
107 | ||
9785d95b BK |
108 | void globals_of_w32 (); |
109 | ||
76b3903d GV |
110 | extern Lisp_Object Vw32_downcase_file_names; |
111 | extern Lisp_Object Vw32_generate_fake_inodes; | |
112 | extern Lisp_Object Vw32_get_true_file_attributes; | |
e0c181dd | 113 | extern int w32_num_mouse_buttons; |
76b3903d | 114 | |
18e070ac | 115 | \f |
9d95a291 EZ |
116 | /* Initialization states. |
117 | ||
118 | WARNING: If you add any more such variables for additional APIs, | |
119 | you MUST add initialization for them to globals_of_w32 | |
120 | below. This is because these variables might get set | |
121 | to non-NULL values during dumping, but the dumped Emacs | |
122 | cannot reuse those values, because it could be run on a | |
123 | different version of the OS, where API addresses are | |
124 | different. */ | |
9785d95b BK |
125 | static BOOL g_b_init_is_windows_9x; |
126 | static BOOL g_b_init_open_process_token; | |
127 | static BOOL g_b_init_get_token_information; | |
128 | static BOOL g_b_init_lookup_account_sid; | |
129 | static BOOL g_b_init_get_sid_identifier_authority; | |
c617afce EZ |
130 | static BOOL g_b_init_get_sid_sub_authority; |
131 | static BOOL g_b_init_get_sid_sub_authority_count; | |
9785d95b | 132 | |
f60ae425 BK |
133 | /* |
134 | BEGIN: Wrapper functions around OpenProcessToken | |
135 | and other functions in advapi32.dll that are only | |
136 | supported in Windows NT / 2k / XP | |
137 | */ | |
138 | /* ** Function pointer typedefs ** */ | |
139 | typedef BOOL (WINAPI * OpenProcessToken_Proc) ( | |
140 | HANDLE ProcessHandle, | |
141 | DWORD DesiredAccess, | |
142 | PHANDLE TokenHandle); | |
143 | typedef BOOL (WINAPI * GetTokenInformation_Proc) ( | |
144 | HANDLE TokenHandle, | |
145 | TOKEN_INFORMATION_CLASS TokenInformationClass, | |
146 | LPVOID TokenInformation, | |
147 | DWORD TokenInformationLength, | |
148 | PDWORD ReturnLength); | |
74258518 JR |
149 | typedef BOOL (WINAPI * GetProcessTimes_Proc) ( |
150 | HANDLE process_handle, | |
151 | LPFILETIME creation_time, | |
152 | LPFILETIME exit_time, | |
153 | LPFILETIME kernel_time, | |
154 | LPFILETIME user_time); | |
155 | ||
156 | GetProcessTimes_Proc get_process_times_fn = NULL; | |
157 | ||
f60ae425 BK |
158 | #ifdef _UNICODE |
159 | const char * const LookupAccountSid_Name = "LookupAccountSidW"; | |
160 | #else | |
161 | const char * const LookupAccountSid_Name = "LookupAccountSidA"; | |
162 | #endif | |
163 | typedef BOOL (WINAPI * LookupAccountSid_Proc) ( | |
164 | LPCTSTR lpSystemName, | |
165 | PSID Sid, | |
166 | LPTSTR Name, | |
167 | LPDWORD cbName, | |
168 | LPTSTR DomainName, | |
169 | LPDWORD cbDomainName, | |
170 | PSID_NAME_USE peUse); | |
171 | typedef PSID_IDENTIFIER_AUTHORITY (WINAPI * GetSidIdentifierAuthority_Proc) ( | |
172 | PSID pSid); | |
c617afce EZ |
173 | typedef PDWORD (WINAPI * GetSidSubAuthority_Proc) ( |
174 | PSID pSid, | |
175 | DWORD n); | |
176 | typedef PUCHAR (WINAPI * GetSidSubAuthorityCount_Proc) ( | |
177 | PSID pSid); | |
178 | ||
f60ae425 BK |
179 | |
180 | /* ** A utility function ** */ | |
9bfb11f9 KS |
181 | static BOOL |
182 | is_windows_9x () | |
f60ae425 | 183 | { |
9785d95b | 184 | static BOOL s_b_ret=0; |
f60ae425 | 185 | OSVERSIONINFO os_ver; |
9785d95b | 186 | if (g_b_init_is_windows_9x == 0) |
f60ae425 | 187 | { |
9785d95b BK |
188 | g_b_init_is_windows_9x = 1; |
189 | ZeroMemory(&os_ver, sizeof(OSVERSIONINFO)); | |
190 | os_ver.dwOSVersionInfoSize = sizeof(OSVERSIONINFO); | |
191 | if (GetVersionEx (&os_ver)) | |
192 | { | |
193 | s_b_ret = (os_ver.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS); | |
194 | } | |
f60ae425 | 195 | } |
9785d95b | 196 | return s_b_ret; |
f60ae425 BK |
197 | } |
198 | ||
74258518 JR |
199 | /* Get total user and system times for get-internal-run-time. |
200 | Returns a list of three integers if the times are provided by the OS | |
201 | (NT derivatives), otherwise it returns the result of current-time. */ | |
202 | Lisp_Object | |
203 | w32_get_internal_run_time () | |
204 | { | |
205 | if (get_process_times_fn) | |
206 | { | |
207 | FILETIME create, exit, kernel, user; | |
208 | HANDLE proc = GetCurrentProcess(); | |
209 | if ((*get_process_times_fn) (proc, &create, &exit, &kernel, &user)) | |
210 | { | |
211 | LARGE_INTEGER user_int, kernel_int, total; | |
212 | int microseconds; | |
213 | user_int.LowPart = user.dwLowDateTime; | |
214 | user_int.HighPart = user.dwHighDateTime; | |
215 | kernel_int.LowPart = kernel.dwLowDateTime; | |
216 | kernel_int.HighPart = kernel.dwHighDateTime; | |
217 | total.QuadPart = user_int.QuadPart + kernel_int.QuadPart; | |
218 | /* FILETIME is 100 nanosecond increments, Emacs only wants | |
219 | microsecond resolution. */ | |
220 | total.QuadPart /= 10; | |
221 | microseconds = total.QuadPart % 1000000; | |
222 | total.QuadPart /= 1000000; | |
223 | ||
224 | /* Sanity check to make sure we can represent the result. */ | |
225 | if (total.HighPart == 0) | |
226 | { | |
227 | int secs = total.LowPart; | |
228 | ||
229 | return list3 (make_number ((secs >> 16) & 0xffff), | |
230 | make_number (secs & 0xffff), | |
231 | make_number (microseconds)); | |
232 | } | |
233 | } | |
234 | } | |
235 | ||
236 | return Fcurrent_time (); | |
237 | } | |
238 | ||
f60ae425 BK |
239 | /* ** The wrapper functions ** */ |
240 | ||
241 | BOOL WINAPI open_process_token ( | |
242 | HANDLE ProcessHandle, | |
243 | DWORD DesiredAccess, | |
244 | PHANDLE TokenHandle) | |
245 | { | |
9785d95b | 246 | static OpenProcessToken_Proc s_pfn_Open_Process_Token = NULL; |
f60ae425 BK |
247 | HMODULE hm_advapi32 = NULL; |
248 | if (is_windows_9x () == TRUE) | |
249 | { | |
250 | return FALSE; | |
251 | } | |
9785d95b BK |
252 | if (g_b_init_open_process_token == 0) |
253 | { | |
254 | g_b_init_open_process_token = 1; | |
255 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
256 | s_pfn_Open_Process_Token = | |
257 | (OpenProcessToken_Proc) GetProcAddress (hm_advapi32, "OpenProcessToken"); | |
258 | } | |
259 | if (s_pfn_Open_Process_Token == NULL) | |
f60ae425 BK |
260 | { |
261 | return FALSE; | |
262 | } | |
263 | return ( | |
9785d95b | 264 | s_pfn_Open_Process_Token ( |
f60ae425 BK |
265 | ProcessHandle, |
266 | DesiredAccess, | |
267 | TokenHandle) | |
268 | ); | |
269 | } | |
270 | ||
271 | BOOL WINAPI get_token_information ( | |
272 | HANDLE TokenHandle, | |
273 | TOKEN_INFORMATION_CLASS TokenInformationClass, | |
274 | LPVOID TokenInformation, | |
275 | DWORD TokenInformationLength, | |
276 | PDWORD ReturnLength) | |
277 | { | |
9785d95b | 278 | static GetTokenInformation_Proc s_pfn_Get_Token_Information = NULL; |
f60ae425 BK |
279 | HMODULE hm_advapi32 = NULL; |
280 | if (is_windows_9x () == TRUE) | |
281 | { | |
282 | return FALSE; | |
283 | } | |
9785d95b BK |
284 | if (g_b_init_get_token_information == 0) |
285 | { | |
286 | g_b_init_get_token_information = 1; | |
287 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
288 | s_pfn_Get_Token_Information = | |
289 | (GetTokenInformation_Proc) GetProcAddress (hm_advapi32, "GetTokenInformation"); | |
290 | } | |
291 | if (s_pfn_Get_Token_Information == NULL) | |
f60ae425 BK |
292 | { |
293 | return FALSE; | |
294 | } | |
295 | return ( | |
9785d95b | 296 | s_pfn_Get_Token_Information ( |
f60ae425 BK |
297 | TokenHandle, |
298 | TokenInformationClass, | |
299 | TokenInformation, | |
300 | TokenInformationLength, | |
301 | ReturnLength) | |
302 | ); | |
303 | } | |
304 | ||
305 | BOOL WINAPI lookup_account_sid ( | |
306 | LPCTSTR lpSystemName, | |
307 | PSID Sid, | |
308 | LPTSTR Name, | |
309 | LPDWORD cbName, | |
310 | LPTSTR DomainName, | |
311 | LPDWORD cbDomainName, | |
312 | PSID_NAME_USE peUse) | |
313 | { | |
9785d95b | 314 | static LookupAccountSid_Proc s_pfn_Lookup_Account_Sid = NULL; |
f60ae425 BK |
315 | HMODULE hm_advapi32 = NULL; |
316 | if (is_windows_9x () == TRUE) | |
317 | { | |
318 | return FALSE; | |
319 | } | |
9785d95b BK |
320 | if (g_b_init_lookup_account_sid == 0) |
321 | { | |
322 | g_b_init_lookup_account_sid = 1; | |
323 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
324 | s_pfn_Lookup_Account_Sid = | |
325 | (LookupAccountSid_Proc) GetProcAddress (hm_advapi32, LookupAccountSid_Name); | |
326 | } | |
327 | if (s_pfn_Lookup_Account_Sid == NULL) | |
f60ae425 BK |
328 | { |
329 | return FALSE; | |
330 | } | |
331 | return ( | |
9785d95b | 332 | s_pfn_Lookup_Account_Sid ( |
f60ae425 BK |
333 | lpSystemName, |
334 | Sid, | |
335 | Name, | |
336 | cbName, | |
337 | DomainName, | |
338 | cbDomainName, | |
339 | peUse) | |
340 | ); | |
341 | } | |
342 | ||
343 | PSID_IDENTIFIER_AUTHORITY WINAPI get_sid_identifier_authority ( | |
344 | PSID pSid) | |
345 | { | |
9785d95b | 346 | static GetSidIdentifierAuthority_Proc s_pfn_Get_Sid_Identifier_Authority = NULL; |
f60ae425 BK |
347 | HMODULE hm_advapi32 = NULL; |
348 | if (is_windows_9x () == TRUE) | |
349 | { | |
350 | return NULL; | |
351 | } | |
9785d95b BK |
352 | if (g_b_init_get_sid_identifier_authority == 0) |
353 | { | |
354 | g_b_init_get_sid_identifier_authority = 1; | |
355 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
356 | s_pfn_Get_Sid_Identifier_Authority = | |
357 | (GetSidIdentifierAuthority_Proc) GetProcAddress ( | |
358 | hm_advapi32, "GetSidIdentifierAuthority"); | |
359 | } | |
360 | if (s_pfn_Get_Sid_Identifier_Authority == NULL) | |
f60ae425 BK |
361 | { |
362 | return NULL; | |
363 | } | |
9785d95b | 364 | return (s_pfn_Get_Sid_Identifier_Authority (pSid)); |
f60ae425 BK |
365 | } |
366 | ||
c617afce EZ |
367 | PDWORD WINAPI get_sid_sub_authority ( |
368 | PSID pSid, | |
369 | DWORD n) | |
370 | { | |
371 | static GetSidSubAuthority_Proc s_pfn_Get_Sid_Sub_Authority = NULL; | |
6811b9f4 | 372 | static DWORD zero = 0U; |
c617afce EZ |
373 | HMODULE hm_advapi32 = NULL; |
374 | if (is_windows_9x () == TRUE) | |
375 | { | |
6811b9f4 | 376 | return &zero; |
c617afce EZ |
377 | } |
378 | if (g_b_init_get_sid_sub_authority == 0) | |
379 | { | |
380 | g_b_init_get_sid_sub_authority = 1; | |
381 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
382 | s_pfn_Get_Sid_Sub_Authority = | |
383 | (GetSidSubAuthority_Proc) GetProcAddress ( | |
384 | hm_advapi32, "GetSidSubAuthority"); | |
385 | } | |
386 | if (s_pfn_Get_Sid_Sub_Authority == NULL) | |
387 | { | |
6811b9f4 | 388 | return &zero; |
c617afce EZ |
389 | } |
390 | return (s_pfn_Get_Sid_Sub_Authority (pSid, n)); | |
391 | } | |
392 | ||
393 | PUCHAR WINAPI get_sid_sub_authority_count ( | |
394 | PSID pSid) | |
395 | { | |
396 | static GetSidSubAuthorityCount_Proc s_pfn_Get_Sid_Sub_Authority_Count = NULL; | |
6811b9f4 | 397 | static UCHAR zero = 0U; |
c617afce EZ |
398 | HMODULE hm_advapi32 = NULL; |
399 | if (is_windows_9x () == TRUE) | |
400 | { | |
6811b9f4 | 401 | return &zero; |
c617afce EZ |
402 | } |
403 | if (g_b_init_get_sid_sub_authority_count == 0) | |
404 | { | |
405 | g_b_init_get_sid_sub_authority_count = 1; | |
406 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
407 | s_pfn_Get_Sid_Sub_Authority_Count = | |
408 | (GetSidSubAuthorityCount_Proc) GetProcAddress ( | |
409 | hm_advapi32, "GetSidSubAuthorityCount"); | |
410 | } | |
411 | if (s_pfn_Get_Sid_Sub_Authority_Count == NULL) | |
412 | { | |
6811b9f4 | 413 | return &zero; |
c617afce EZ |
414 | } |
415 | return (s_pfn_Get_Sid_Sub_Authority_Count (pSid)); | |
416 | } | |
417 | ||
f60ae425 BK |
418 | /* |
419 | END: Wrapper functions around OpenProcessToken | |
420 | and other functions in advapi32.dll that are only | |
421 | supported in Windows NT / 2k / XP | |
422 | */ | |
423 | ||
424 | \f | |
18e070ac AI |
425 | /* Equivalent of strerror for W32 error codes. */ |
426 | char * | |
427 | w32_strerror (int error_no) | |
428 | { | |
429 | static char buf[500]; | |
430 | ||
431 | if (error_no == 0) | |
432 | error_no = GetLastError (); | |
433 | ||
434 | buf[0] = '\0'; | |
435 | if (!FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM, NULL, | |
436 | error_no, | |
437 | 0, /* choose most suitable language */ | |
438 | buf, sizeof (buf), NULL)) | |
439 | sprintf (buf, "w32 error %u", error_no); | |
440 | return buf; | |
441 | } | |
442 | ||
ed91b2ad EZ |
443 | /* Return 1 if P is a valid pointer to an object of size SIZE. Return |
444 | 0 if P is NOT a valid pointer. Return -1 if we cannot validate P. | |
445 | ||
446 | This is called from alloc.c:valid_pointer_p. */ | |
447 | int | |
448 | w32_valid_pointer_p (void *p, int size) | |
449 | { | |
450 | SIZE_T done; | |
451 | HANDLE h = OpenProcess (PROCESS_VM_READ, FALSE, GetCurrentProcessId ()); | |
452 | ||
453 | if (h) | |
454 | { | |
455 | unsigned char *buf = alloca (size); | |
456 | int retval = ReadProcessMemory (h, p, buf, size, &done); | |
457 | ||
458 | CloseHandle (h); | |
459 | return retval; | |
460 | } | |
461 | else | |
462 | return -1; | |
463 | } | |
464 | ||
76b3903d | 465 | static char startup_dir[MAXPATHLEN]; |
00b3b7b3 | 466 | |
95ed0025 | 467 | /* Get the current working directory. */ |
480b0c5b | 468 | char * |
95ed0025 RS |
469 | getwd (char *dir) |
470 | { | |
76b3903d | 471 | #if 0 |
480b0c5b GV |
472 | if (GetCurrentDirectory (MAXPATHLEN, dir) > 0) |
473 | return dir; | |
474 | return NULL; | |
76b3903d GV |
475 | #else |
476 | /* Emacs doesn't actually change directory itself, and we want to | |
477 | force our real wd to be where emacs.exe is to avoid unnecessary | |
478 | conflicts when trying to rename or delete directories. */ | |
479 | strcpy (dir, startup_dir); | |
480 | return dir; | |
481 | #endif | |
95ed0025 RS |
482 | } |
483 | ||
480b0c5b | 484 | #ifndef HAVE_SOCKETS |
95ed0025 RS |
485 | /* Emulate gethostname. */ |
486 | int | |
487 | gethostname (char *buffer, int size) | |
488 | { | |
177c0ea7 | 489 | /* NT only allows small host names, so the buffer is |
95ed0025 RS |
490 | certainly large enough. */ |
491 | return !GetComputerName (buffer, &size); | |
492 | } | |
480b0c5b | 493 | #endif /* HAVE_SOCKETS */ |
95ed0025 RS |
494 | |
495 | /* Emulate getloadavg. */ | |
496 | int | |
497 | getloadavg (double loadavg[], int nelem) | |
498 | { | |
499 | int i; | |
500 | ||
501 | /* A faithful emulation is going to have to be saved for a rainy day. */ | |
177c0ea7 | 502 | for (i = 0; i < nelem; i++) |
95ed0025 RS |
503 | { |
504 | loadavg[i] = 0.0; | |
505 | } | |
506 | return i; | |
507 | } | |
508 | ||
480b0c5b | 509 | /* Emulate getpwuid, getpwnam and others. */ |
95ed0025 | 510 | |
051fe60d GV |
511 | #define PASSWD_FIELD_SIZE 256 |
512 | ||
513 | static char the_passwd_name[PASSWD_FIELD_SIZE]; | |
514 | static char the_passwd_passwd[PASSWD_FIELD_SIZE]; | |
515 | static char the_passwd_gecos[PASSWD_FIELD_SIZE]; | |
516 | static char the_passwd_dir[PASSWD_FIELD_SIZE]; | |
517 | static char the_passwd_shell[PASSWD_FIELD_SIZE]; | |
95ed0025 | 518 | |
177c0ea7 | 519 | static struct passwd the_passwd = |
95ed0025 RS |
520 | { |
521 | the_passwd_name, | |
522 | the_passwd_passwd, | |
523 | 0, | |
524 | 0, | |
525 | 0, | |
526 | the_passwd_gecos, | |
527 | the_passwd_dir, | |
528 | the_passwd_shell, | |
529 | }; | |
530 | ||
3d19b645 LH |
531 | static struct group the_group = |
532 | { | |
533 | /* There are no groups on NT, so we just return "root" as the | |
534 | group name. */ | |
535 | "root", | |
536 | }; | |
537 | ||
177c0ea7 JB |
538 | int |
539 | getuid () | |
540 | { | |
480b0c5b GV |
541 | return the_passwd.pw_uid; |
542 | } | |
543 | ||
177c0ea7 JB |
544 | int |
545 | geteuid () | |
546 | { | |
480b0c5b GV |
547 | /* I could imagine arguing for checking to see whether the user is |
548 | in the Administrators group and returning a UID of 0 for that | |
549 | case, but I don't know how wise that would be in the long run. */ | |
177c0ea7 | 550 | return getuid (); |
480b0c5b GV |
551 | } |
552 | ||
177c0ea7 JB |
553 | int |
554 | getgid () | |
555 | { | |
480b0c5b GV |
556 | return the_passwd.pw_gid; |
557 | } | |
558 | ||
177c0ea7 JB |
559 | int |
560 | getegid () | |
561 | { | |
480b0c5b GV |
562 | return getgid (); |
563 | } | |
564 | ||
95ed0025 RS |
565 | struct passwd * |
566 | getpwuid (int uid) | |
567 | { | |
480b0c5b GV |
568 | if (uid == the_passwd.pw_uid) |
569 | return &the_passwd; | |
570 | return NULL; | |
95ed0025 RS |
571 | } |
572 | ||
3d19b645 LH |
573 | struct group * |
574 | getgrgid (gid_t gid) | |
575 | { | |
576 | return &the_group; | |
577 | } | |
578 | ||
95ed0025 RS |
579 | struct passwd * |
580 | getpwnam (char *name) | |
581 | { | |
582 | struct passwd *pw; | |
177c0ea7 | 583 | |
95ed0025 RS |
584 | pw = getpwuid (getuid ()); |
585 | if (!pw) | |
586 | return pw; | |
587 | ||
480b0c5b | 588 | if (stricmp (name, pw->pw_name)) |
95ed0025 RS |
589 | return NULL; |
590 | ||
591 | return pw; | |
592 | } | |
593 | ||
480b0c5b GV |
594 | void |
595 | init_user_info () | |
95ed0025 | 596 | { |
480b0c5b GV |
597 | /* Find the user's real name by opening the process token and |
598 | looking up the name associated with the user-sid in that token. | |
599 | ||
600 | Use the relative portion of the identifier authority value from | |
601 | the user-sid as the user id value (same for group id using the | |
602 | primary group sid from the process token). */ | |
603 | ||
634d3003 | 604 | char name[UNLEN+1], domain[1025]; |
10aabbf9 JB |
605 | DWORD length = sizeof (name), dlength = sizeof (domain), trash; |
606 | HANDLE token = NULL; | |
607 | SID_NAME_USE user_type; | |
634d3003 EZ |
608 | unsigned char buf[1024]; |
609 | TOKEN_USER user_token; | |
610 | TOKEN_PRIMARY_GROUP group_token; | |
10aabbf9 JB |
611 | |
612 | if (open_process_token (GetCurrentProcess (), TOKEN_QUERY, &token) | |
613 | && get_token_information (token, TokenUser, | |
634d3003 EZ |
614 | (PVOID)buf, sizeof (buf), &trash) |
615 | && (memcpy (&user_token, buf, sizeof (user_token)), | |
616 | lookup_account_sid (NULL, user_token.User.Sid, name, &length, | |
617 | domain, &dlength, &user_type))) | |
d1c1c3d2 | 618 | { |
480b0c5b | 619 | strcpy (the_passwd.pw_name, name); |
c617afce | 620 | /* Determine a reasonable uid value. */ |
480b0c5b GV |
621 | if (stricmp ("administrator", name) == 0) |
622 | { | |
c617afce EZ |
623 | the_passwd.pw_uid = 500; /* well-known Administrator uid */ |
624 | the_passwd.pw_gid = 513; /* well-known None gid */ | |
480b0c5b GV |
625 | } |
626 | else | |
627 | { | |
ce0ee994 EZ |
628 | /* Use the last sub-authority value of the RID, the relative |
629 | portion of the SID, as user/group ID. */ | |
c617afce | 630 | DWORD n_subauthorities = |
634d3003 | 631 | *get_sid_sub_authority_count (user_token.User.Sid); |
c617afce EZ |
632 | |
633 | if (n_subauthorities < 1) | |
634 | the_passwd.pw_uid = 0; /* the "World" RID */ | |
635 | else | |
636 | { | |
637 | the_passwd.pw_uid = | |
634d3003 | 638 | *get_sid_sub_authority (user_token.User.Sid, |
c617afce | 639 | n_subauthorities - 1); |
c617afce | 640 | } |
480b0c5b GV |
641 | |
642 | /* Get group id */ | |
f60ae425 | 643 | if (get_token_information (token, TokenPrimaryGroup, |
634d3003 | 644 | (PVOID)buf, sizeof (buf), &trash)) |
480b0c5b | 645 | { |
634d3003 | 646 | memcpy (&group_token, buf, sizeof (group_token)); |
c617afce | 647 | n_subauthorities = |
634d3003 | 648 | *get_sid_sub_authority_count (group_token.PrimaryGroup); |
c617afce EZ |
649 | |
650 | if (n_subauthorities < 1) | |
651 | the_passwd.pw_gid = 0; /* the "World" RID */ | |
652 | else | |
653 | { | |
654 | the_passwd.pw_gid = | |
634d3003 | 655 | *get_sid_sub_authority (group_token.PrimaryGroup, |
c617afce | 656 | n_subauthorities - 1); |
c617afce | 657 | } |
480b0c5b GV |
658 | } |
659 | else | |
660 | the_passwd.pw_gid = the_passwd.pw_uid; | |
661 | } | |
662 | } | |
663 | /* If security calls are not supported (presumably because we | |
10aabbf9 | 664 | are running under Windows 95), fallback to this. */ |
480b0c5b GV |
665 | else if (GetUserName (name, &length)) |
666 | { | |
667 | strcpy (the_passwd.pw_name, name); | |
668 | if (stricmp ("administrator", name) == 0) | |
669 | the_passwd.pw_uid = 0; | |
670 | else | |
671 | the_passwd.pw_uid = 123; | |
672 | the_passwd.pw_gid = the_passwd.pw_uid; | |
673 | } | |
674 | else | |
675 | { | |
676 | strcpy (the_passwd.pw_name, "unknown"); | |
677 | the_passwd.pw_uid = 123; | |
678 | the_passwd.pw_gid = 123; | |
d1c1c3d2 | 679 | } |
95ed0025 | 680 | |
480b0c5b GV |
681 | /* Ensure HOME and SHELL are defined. */ |
682 | if (getenv ("HOME") == NULL) | |
ca149beb | 683 | abort (); |
480b0c5b | 684 | if (getenv ("SHELL") == NULL) |
ca149beb | 685 | abort (); |
95ed0025 | 686 | |
480b0c5b GV |
687 | /* Set dir and shell from environment variables. */ |
688 | strcpy (the_passwd.pw_dir, getenv ("HOME")); | |
689 | strcpy (the_passwd.pw_shell, getenv ("SHELL")); | |
bd4a449f | 690 | |
480b0c5b GV |
691 | if (token) |
692 | CloseHandle (token); | |
95ed0025 RS |
693 | } |
694 | ||
95ed0025 | 695 | int |
480b0c5b | 696 | random () |
95ed0025 | 697 | { |
480b0c5b GV |
698 | /* rand () on NT gives us 15 random bits...hack together 30 bits. */ |
699 | return ((rand () << 15) | rand ()); | |
95ed0025 RS |
700 | } |
701 | ||
95ed0025 | 702 | void |
480b0c5b | 703 | srandom (int seed) |
95ed0025 | 704 | { |
480b0c5b | 705 | srand (seed); |
95ed0025 RS |
706 | } |
707 | ||
76b3903d | 708 | |
cbe39279 RS |
709 | /* Normalize filename by converting all path separators to |
710 | the specified separator. Also conditionally convert upper | |
711 | case path name components to lower case. */ | |
712 | ||
713 | static void | |
714 | normalize_filename (fp, path_sep) | |
715 | register char *fp; | |
716 | char path_sep; | |
717 | { | |
718 | char sep; | |
719 | char *elem; | |
720 | ||
5162ffce MB |
721 | /* Always lower-case drive letters a-z, even if the filesystem |
722 | preserves case in filenames. | |
723 | This is so filenames can be compared by string comparison | |
724 | functions that are case-sensitive. Even case-preserving filesystems | |
725 | do not distinguish case in drive letters. */ | |
726 | if (fp[1] == ':' && *fp >= 'A' && *fp <= 'Z') | |
727 | { | |
728 | *fp += 'a' - 'A'; | |
729 | fp += 2; | |
730 | } | |
731 | ||
fbd6baed | 732 | if (NILP (Vw32_downcase_file_names)) |
cbe39279 RS |
733 | { |
734 | while (*fp) | |
735 | { | |
736 | if (*fp == '/' || *fp == '\\') | |
737 | *fp = path_sep; | |
738 | fp++; | |
739 | } | |
740 | return; | |
741 | } | |
742 | ||
743 | sep = path_sep; /* convert to this path separator */ | |
744 | elem = fp; /* start of current path element */ | |
745 | ||
746 | do { | |
747 | if (*fp >= 'a' && *fp <= 'z') | |
748 | elem = 0; /* don't convert this element */ | |
749 | ||
750 | if (*fp == 0 || *fp == ':') | |
751 | { | |
752 | sep = *fp; /* restore current separator (or 0) */ | |
753 | *fp = '/'; /* after conversion of this element */ | |
754 | } | |
755 | ||
756 | if (*fp == '/' || *fp == '\\') | |
757 | { | |
758 | if (elem && elem != fp) | |
759 | { | |
760 | *fp = 0; /* temporary end of string */ | |
761 | _strlwr (elem); /* while we convert to lower case */ | |
762 | } | |
763 | *fp = sep; /* convert (or restore) path separator */ | |
764 | elem = fp + 1; /* next element starts after separator */ | |
765 | sep = path_sep; | |
766 | } | |
767 | } while (*fp++); | |
768 | } | |
769 | ||
480b0c5b | 770 | /* Destructively turn backslashes into slashes. */ |
95ed0025 | 771 | void |
480b0c5b GV |
772 | dostounix_filename (p) |
773 | register char *p; | |
95ed0025 | 774 | { |
cbe39279 | 775 | normalize_filename (p, '/'); |
95ed0025 RS |
776 | } |
777 | ||
480b0c5b | 778 | /* Destructively turn slashes into backslashes. */ |
95ed0025 | 779 | void |
480b0c5b GV |
780 | unixtodos_filename (p) |
781 | register char *p; | |
95ed0025 | 782 | { |
cbe39279 | 783 | normalize_filename (p, '\\'); |
95ed0025 RS |
784 | } |
785 | ||
480b0c5b GV |
786 | /* Remove all CR's that are followed by a LF. |
787 | (From msdos.c...probably should figure out a way to share it, | |
788 | although this code isn't going to ever change.) */ | |
35f0d482 | 789 | int |
480b0c5b GV |
790 | crlf_to_lf (n, buf) |
791 | register int n; | |
792 | register unsigned char *buf; | |
35f0d482 | 793 | { |
480b0c5b GV |
794 | unsigned char *np = buf; |
795 | unsigned char *startp = buf; | |
796 | unsigned char *endp = buf + n; | |
35f0d482 | 797 | |
480b0c5b GV |
798 | if (n == 0) |
799 | return n; | |
800 | while (buf < endp - 1) | |
95ed0025 | 801 | { |
480b0c5b GV |
802 | if (*buf == 0x0d) |
803 | { | |
804 | if (*(++buf) != 0x0a) | |
805 | *np++ = 0x0d; | |
806 | } | |
807 | else | |
808 | *np++ = *buf++; | |
95ed0025 | 809 | } |
480b0c5b GV |
810 | if (buf < endp) |
811 | *np++ = *buf++; | |
812 | return np - startp; | |
95ed0025 RS |
813 | } |
814 | ||
76b3903d GV |
815 | /* Parse the root part of file name, if present. Return length and |
816 | optionally store pointer to char after root. */ | |
817 | static int | |
818 | parse_root (char * name, char ** pPath) | |
819 | { | |
820 | char * start = name; | |
821 | ||
822 | if (name == NULL) | |
823 | return 0; | |
824 | ||
825 | /* find the root name of the volume if given */ | |
826 | if (isalpha (name[0]) && name[1] == ':') | |
827 | { | |
828 | /* skip past drive specifier */ | |
829 | name += 2; | |
830 | if (IS_DIRECTORY_SEP (name[0])) | |
831 | name++; | |
832 | } | |
833 | else if (IS_DIRECTORY_SEP (name[0]) && IS_DIRECTORY_SEP (name[1])) | |
834 | { | |
835 | int slashes = 2; | |
836 | name += 2; | |
837 | do | |
838 | { | |
839 | if (IS_DIRECTORY_SEP (*name) && --slashes == 0) | |
840 | break; | |
841 | name++; | |
842 | } | |
843 | while ( *name ); | |
844 | if (IS_DIRECTORY_SEP (name[0])) | |
845 | name++; | |
846 | } | |
847 | ||
848 | if (pPath) | |
849 | *pPath = name; | |
850 | ||
851 | return name - start; | |
852 | } | |
853 | ||
854 | /* Get long base name for name; name is assumed to be absolute. */ | |
855 | static int | |
856 | get_long_basename (char * name, char * buf, int size) | |
857 | { | |
858 | WIN32_FIND_DATA find_data; | |
859 | HANDLE dir_handle; | |
860 | int len = 0; | |
861 | ||
9ab8560d | 862 | /* must be valid filename, no wild cards or other invalid characters */ |
22189f79 | 863 | if (_mbspbrk (name, "*?|<>\"")) |
bb1584c8 RS |
864 | return 0; |
865 | ||
76b3903d GV |
866 | dir_handle = FindFirstFile (name, &find_data); |
867 | if (dir_handle != INVALID_HANDLE_VALUE) | |
868 | { | |
869 | if ((len = strlen (find_data.cFileName)) < size) | |
870 | memcpy (buf, find_data.cFileName, len + 1); | |
871 | else | |
872 | len = 0; | |
873 | FindClose (dir_handle); | |
874 | } | |
875 | return len; | |
876 | } | |
877 | ||
878 | /* Get long name for file, if possible (assumed to be absolute). */ | |
879 | BOOL | |
880 | w32_get_long_filename (char * name, char * buf, int size) | |
881 | { | |
882 | char * o = buf; | |
883 | char * p; | |
884 | char * q; | |
885 | char full[ MAX_PATH ]; | |
886 | int len; | |
887 | ||
888 | len = strlen (name); | |
889 | if (len >= MAX_PATH) | |
890 | return FALSE; | |
891 | ||
892 | /* Use local copy for destructive modification. */ | |
893 | memcpy (full, name, len+1); | |
894 | unixtodos_filename (full); | |
895 | ||
896 | /* Copy root part verbatim. */ | |
897 | len = parse_root (full, &p); | |
898 | memcpy (o, full, len); | |
899 | o += len; | |
4f8ac0b2 | 900 | *o = '\0'; |
76b3903d GV |
901 | size -= len; |
902 | ||
4f8ac0b2 | 903 | while (p != NULL && *p) |
76b3903d GV |
904 | { |
905 | q = p; | |
906 | p = strchr (q, '\\'); | |
907 | if (p) *p = '\0'; | |
908 | len = get_long_basename (full, o, size); | |
909 | if (len > 0) | |
910 | { | |
911 | o += len; | |
912 | size -= len; | |
913 | if (p != NULL) | |
914 | { | |
915 | *p++ = '\\'; | |
916 | if (size < 2) | |
917 | return FALSE; | |
918 | *o++ = '\\'; | |
919 | size--; | |
920 | *o = '\0'; | |
921 | } | |
922 | } | |
923 | else | |
924 | return FALSE; | |
925 | } | |
76b3903d GV |
926 | |
927 | return TRUE; | |
928 | } | |
929 | ||
9d3355d1 GV |
930 | int |
931 | is_unc_volume (const char *filename) | |
932 | { | |
933 | const char *ptr = filename; | |
934 | ||
935 | if (!IS_DIRECTORY_SEP (ptr[0]) || !IS_DIRECTORY_SEP (ptr[1]) || !ptr[2]) | |
936 | return 0; | |
937 | ||
22189f79 | 938 | if (_mbspbrk (ptr + 2, "*?|<>\"\\/")) |
9d3355d1 GV |
939 | return 0; |
940 | ||
941 | return 1; | |
942 | } | |
76b3903d | 943 | |
95ed0025 RS |
944 | /* Routines that are no-ops on NT but are defined to get Emacs to compile. */ |
945 | ||
177c0ea7 JB |
946 | int |
947 | sigsetmask (int signal_mask) | |
948 | { | |
95ed0025 RS |
949 | return 0; |
950 | } | |
951 | ||
177c0ea7 JB |
952 | int |
953 | sigmask (int sig) | |
954 | { | |
8f900f6e AI |
955 | return 0; |
956 | } | |
957 | ||
177c0ea7 JB |
958 | int |
959 | sigblock (int sig) | |
960 | { | |
95ed0025 RS |
961 | return 0; |
962 | } | |
963 | ||
177c0ea7 JB |
964 | int |
965 | sigunblock (int sig) | |
966 | { | |
8f900f6e AI |
967 | return 0; |
968 | } | |
969 | ||
177c0ea7 JB |
970 | int |
971 | setpgrp (int pid, int gid) | |
972 | { | |
95ed0025 RS |
973 | return 0; |
974 | } | |
975 | ||
177c0ea7 JB |
976 | int |
977 | alarm (int seconds) | |
978 | { | |
95ed0025 RS |
979 | return 0; |
980 | } | |
981 | ||
480b0c5b | 982 | #define REG_ROOT "SOFTWARE\\GNU\\Emacs" |
f332b293 | 983 | |
177c0ea7 | 984 | LPBYTE |
fbd6baed | 985 | w32_get_resource (key, lpdwtype) |
f332b293 GV |
986 | char *key; |
987 | LPDWORD lpdwtype; | |
988 | { | |
989 | LPBYTE lpvalue; | |
990 | HKEY hrootkey = NULL; | |
991 | DWORD cbData; | |
177c0ea7 JB |
992 | |
993 | /* Check both the current user and the local machine to see if | |
f332b293 | 994 | we have any resources. */ |
177c0ea7 | 995 | |
f332b293 GV |
996 | if (RegOpenKeyEx (HKEY_CURRENT_USER, REG_ROOT, 0, KEY_READ, &hrootkey) == ERROR_SUCCESS) |
997 | { | |
998 | lpvalue = NULL; | |
999 | ||
177c0ea7 JB |
1000 | if (RegQueryValueEx (hrootkey, key, NULL, NULL, NULL, &cbData) == ERROR_SUCCESS |
1001 | && (lpvalue = (LPBYTE) xmalloc (cbData)) != NULL | |
f332b293 GV |
1002 | && RegQueryValueEx (hrootkey, key, NULL, lpdwtype, lpvalue, &cbData) == ERROR_SUCCESS) |
1003 | { | |
4da4d9bb | 1004 | RegCloseKey (hrootkey); |
f332b293 GV |
1005 | return (lpvalue); |
1006 | } | |
1007 | ||
1008 | if (lpvalue) xfree (lpvalue); | |
177c0ea7 | 1009 | |
f332b293 | 1010 | RegCloseKey (hrootkey); |
177c0ea7 JB |
1011 | } |
1012 | ||
f332b293 GV |
1013 | if (RegOpenKeyEx (HKEY_LOCAL_MACHINE, REG_ROOT, 0, KEY_READ, &hrootkey) == ERROR_SUCCESS) |
1014 | { | |
1015 | lpvalue = NULL; | |
177c0ea7 | 1016 | |
76b3903d GV |
1017 | if (RegQueryValueEx (hrootkey, key, NULL, NULL, NULL, &cbData) == ERROR_SUCCESS |
1018 | && (lpvalue = (LPBYTE) xmalloc (cbData)) != NULL | |
1019 | && RegQueryValueEx (hrootkey, key, NULL, lpdwtype, lpvalue, &cbData) == ERROR_SUCCESS) | |
f332b293 | 1020 | { |
4da4d9bb | 1021 | RegCloseKey (hrootkey); |
f332b293 GV |
1022 | return (lpvalue); |
1023 | } | |
177c0ea7 | 1024 | |
f332b293 | 1025 | if (lpvalue) xfree (lpvalue); |
177c0ea7 | 1026 | |
f332b293 | 1027 | RegCloseKey (hrootkey); |
177c0ea7 JB |
1028 | } |
1029 | ||
f332b293 GV |
1030 | return (NULL); |
1031 | } | |
1032 | ||
75b08edb GV |
1033 | char *get_emacs_configuration (void); |
1034 | extern Lisp_Object Vsystem_configuration; | |
1035 | ||
f332b293 | 1036 | void |
aa7b87b0 | 1037 | init_environment (char ** argv) |
f332b293 | 1038 | { |
b3308d2e KH |
1039 | static const char * const tempdirs[] = { |
1040 | "$TMPDIR", "$TEMP", "$TMP", "c:/" | |
1041 | }; | |
2d5324c5 | 1042 | |
b3308d2e | 1043 | int i; |
2d5324c5 | 1044 | |
b3308d2e KH |
1045 | const int imax = sizeof (tempdirs) / sizeof (tempdirs[0]); |
1046 | ||
1047 | /* Make sure they have a usable $TMPDIR. Many Emacs functions use | |
1048 | temporary files and assume "/tmp" if $TMPDIR is unset, which | |
1049 | will break on DOS/Windows. Refuse to work if we cannot find | |
1050 | a directory, not even "c:/", usable for that purpose. */ | |
1051 | for (i = 0; i < imax ; i++) | |
1052 | { | |
1053 | const char *tmp = tempdirs[i]; | |
1054 | ||
1055 | if (*tmp == '$') | |
1056 | tmp = getenv (tmp + 1); | |
1057 | /* Note that `access' can lie to us if the directory resides on a | |
1058 | read-only filesystem, like CD-ROM or a write-protected floppy. | |
1059 | The only way to be really sure is to actually create a file and | |
1060 | see if it succeeds. But I think that's too much to ask. */ | |
a302c7ae | 1061 | if (tmp && _access (tmp, D_OK) == 0) |
b3308d2e KH |
1062 | { |
1063 | char * var = alloca (strlen (tmp) + 8); | |
1064 | sprintf (var, "TMPDIR=%s", tmp); | |
aca583b2 | 1065 | _putenv (strdup (var)); |
b3308d2e KH |
1066 | break; |
1067 | } | |
1068 | } | |
1069 | if (i >= imax) | |
1070 | cmd_error_internal | |
1071 | (Fcons (Qerror, | |
1072 | Fcons (build_string ("no usable temporary directories found!!"), | |
1073 | Qnil)), | |
1074 | "While setting TMPDIR: "); | |
1075 | ||
ca149beb AI |
1076 | /* Check for environment variables and use registry settings if they |
1077 | don't exist. Fallback on default values where applicable. */ | |
f332b293 | 1078 | { |
480b0c5b GV |
1079 | int i; |
1080 | LPBYTE lpval; | |
1081 | DWORD dwType; | |
69fb0241 | 1082 | char locale_name[32]; |
2d5324c5 JR |
1083 | struct stat ignored; |
1084 | char default_home[MAX_PATH]; | |
f332b293 | 1085 | |
e00b99c8 | 1086 | static const struct env_entry |
ca149beb AI |
1087 | { |
1088 | char * name; | |
1089 | char * def_value; | |
e00b99c8 | 1090 | } dflt_envvars[] = |
ca149beb AI |
1091 | { |
1092 | {"HOME", "C:/"}, | |
1093 | {"PRELOAD_WINSOCK", NULL}, | |
1094 | {"emacs_dir", "C:/emacs"}, | |
cc14250a | 1095 | {"EMACSLOADPATH", "%emacs_dir%/site-lisp;%emacs_dir%/../site-lisp;%emacs_dir%/lisp;%emacs_dir%/leim"}, |
ca149beb AI |
1096 | {"SHELL", "%emacs_dir%/bin/cmdproxy.exe"}, |
1097 | {"EMACSDATA", "%emacs_dir%/etc"}, | |
1098 | {"EMACSPATH", "%emacs_dir%/bin"}, | |
76b3903d | 1099 | /* We no longer set INFOPATH because Info-default-directory-list |
ca149beb AI |
1100 | is then ignored. */ |
1101 | /* {"INFOPATH", "%emacs_dir%/info"}, */ | |
1102 | {"EMACSDOC", "%emacs_dir%/etc"}, | |
69fb0241 JR |
1103 | {"TERM", "cmd"}, |
1104 | {"LANG", NULL}, | |
480b0c5b GV |
1105 | }; |
1106 | ||
e00b99c8 EZ |
1107 | #define N_ENV_VARS sizeof(dflt_envvars)/sizeof(dflt_envvars[0]) |
1108 | ||
1109 | /* We need to copy dflt_envvars[] and work on the copy because we | |
1110 | don't want the dumped Emacs to inherit the values of | |
1111 | environment variables we saw during dumping (which could be on | |
1112 | a different system). The defaults above must be left intact. */ | |
1113 | struct env_entry env_vars[N_ENV_VARS]; | |
1114 | ||
1115 | for (i = 0; i < N_ENV_VARS; i++) | |
1116 | env_vars[i] = dflt_envvars[i]; | |
1117 | ||
2d5324c5 JR |
1118 | /* For backwards compatibility, check if a .emacs file exists in C:/ |
1119 | If not, then we can try to default to the appdata directory under the | |
1120 | user's profile, which is more likely to be writable. */ | |
1121 | if (stat ("C:/.emacs", &ignored) < 0) | |
1122 | { | |
1123 | HRESULT profile_result; | |
1124 | /* Dynamically load ShGetFolderPath, as it won't exist on versions | |
1125 | of Windows 95 and NT4 that have not been updated to include | |
1126 | MSIE 5. Also we don't link with shell32.dll by default. */ | |
1127 | HMODULE shell32_dll; | |
1128 | ShGetFolderPath_fn get_folder_path; | |
1129 | shell32_dll = GetModuleHandle ("shell32.dll"); | |
1130 | get_folder_path = (ShGetFolderPath_fn) | |
1131 | GetProcAddress (shell32_dll, "SHGetFolderPathA"); | |
1132 | ||
1133 | if (get_folder_path != NULL) | |
1134 | { | |
1135 | profile_result = get_folder_path (NULL, CSIDL_APPDATA, NULL, | |
1136 | 0, default_home); | |
1137 | ||
1138 | /* If we can't get the appdata dir, revert to old behaviour. */ | |
1139 | if (profile_result == S_OK) | |
1140 | env_vars[0].def_value = default_home; | |
1141 | } | |
1142 | ||
1143 | /* Unload shell32.dll, it is not needed anymore. */ | |
1144 | FreeLibrary (shell32_dll); | |
1145 | } | |
1146 | ||
69fb0241 JR |
1147 | /* Get default locale info and use it for LANG. */ |
1148 | if (GetLocaleInfo (LOCALE_USER_DEFAULT, | |
1149 | LOCALE_SABBREVLANGNAME | LOCALE_USE_CP_ACP, | |
1150 | locale_name, sizeof (locale_name))) | |
1151 | { | |
e00b99c8 | 1152 | for (i = 0; i < N_ENV_VARS; i++) |
69fb0241 JR |
1153 | { |
1154 | if (strcmp (env_vars[i].name, "LANG") == 0) | |
1155 | { | |
1156 | env_vars[i].def_value = locale_name; | |
1157 | break; | |
1158 | } | |
1159 | } | |
1160 | } | |
1161 | ||
ca149beb AI |
1162 | #define SET_ENV_BUF_SIZE (4 * MAX_PATH) /* to cover EMACSLOADPATH */ |
1163 | ||
1164 | /* Treat emacs_dir specially: set it unconditionally based on our | |
1165 | location, if it appears that we are running from the bin subdir | |
1166 | of a standard installation. */ | |
1167 | { | |
1168 | char *p; | |
1169 | char modname[MAX_PATH]; | |
1170 | ||
1171 | if (!GetModuleFileName (NULL, modname, MAX_PATH)) | |
1172 | abort (); | |
1173 | if ((p = strrchr (modname, '\\')) == NULL) | |
1174 | abort (); | |
1175 | *p = 0; | |
1176 | ||
1177 | if ((p = strrchr (modname, '\\')) && stricmp (p, "\\bin") == 0) | |
1178 | { | |
1179 | char buf[SET_ENV_BUF_SIZE]; | |
1180 | ||
1181 | *p = 0; | |
1182 | for (p = modname; *p; p++) | |
1183 | if (*p == '\\') *p = '/'; | |
177c0ea7 | 1184 | |
ca149beb | 1185 | _snprintf (buf, sizeof(buf)-1, "emacs_dir=%s", modname); |
a302c7ae | 1186 | _putenv (strdup (buf)); |
ca149beb | 1187 | } |
950090be JR |
1188 | /* Handle running emacs from the build directory: src/oo-spd/i386/ */ |
1189 | ||
1190 | /* FIXME: should use substring of get_emacs_configuration (). | |
1191 | But I don't think the Windows build supports alpha, mips etc | |
1192 | anymore, so have taken the easy option for now. */ | |
1193 | else if (p && stricmp (p, "\\i386") == 0) | |
1194 | { | |
1195 | *p = 0; | |
1196 | p = strrchr (modname, '\\'); | |
1197 | if (p != NULL) | |
1198 | { | |
1199 | *p = 0; | |
1200 | p = strrchr (modname, '\\'); | |
1201 | if (p && stricmp (p, "\\src") == 0) | |
1202 | { | |
1203 | char buf[SET_ENV_BUF_SIZE]; | |
1204 | ||
1205 | *p = 0; | |
1206 | for (p = modname; *p; p++) | |
1207 | if (*p == '\\') *p = '/'; | |
1208 | ||
1209 | _snprintf (buf, sizeof(buf)-1, "emacs_dir=%s", modname); | |
1210 | _putenv (strdup (buf)); | |
1211 | } | |
1212 | } | |
1213 | } | |
ca149beb AI |
1214 | } |
1215 | ||
e00b99c8 | 1216 | for (i = 0; i < N_ENV_VARS; i++) |
f332b293 | 1217 | { |
ca149beb | 1218 | if (!getenv (env_vars[i].name)) |
480b0c5b | 1219 | { |
ca149beb | 1220 | int dont_free = 0; |
480b0c5b | 1221 | |
aa5ee2a3 JB |
1222 | if ((lpval = w32_get_resource (env_vars[i].name, &dwType)) == NULL |
1223 | /* Also ignore empty environment variables. */ | |
1224 | || *lpval == 0) | |
ca149beb | 1225 | { |
14c71d8b | 1226 | if (lpval) xfree (lpval); |
ca149beb AI |
1227 | lpval = env_vars[i].def_value; |
1228 | dwType = REG_EXPAND_SZ; | |
1229 | dont_free = 1; | |
480b0c5b | 1230 | } |
ca149beb AI |
1231 | |
1232 | if (lpval) | |
480b0c5b | 1233 | { |
892eb237 | 1234 | char buf1[SET_ENV_BUF_SIZE], buf2[SET_ENV_BUF_SIZE]; |
ca149beb | 1235 | |
892eb237 EZ |
1236 | if (dwType == REG_EXPAND_SZ) |
1237 | ExpandEnvironmentStrings ((LPSTR) lpval, buf1, sizeof(buf1)); | |
ca149beb | 1238 | else if (dwType == REG_SZ) |
892eb237 EZ |
1239 | strcpy (buf1, lpval); |
1240 | if (dwType == REG_EXPAND_SZ || dwType == REG_SZ) | |
ca149beb | 1241 | { |
892eb237 EZ |
1242 | _snprintf (buf2, sizeof(buf2)-1, "%s=%s", env_vars[i].name, |
1243 | buf1); | |
1244 | _putenv (strdup (buf2)); | |
ca149beb | 1245 | } |
f332b293 | 1246 | |
ca149beb AI |
1247 | if (!dont_free) |
1248 | xfree (lpval); | |
1249 | } | |
480b0c5b GV |
1250 | } |
1251 | } | |
1252 | } | |
1253 | ||
75b08edb GV |
1254 | /* Rebuild system configuration to reflect invoking system. */ |
1255 | Vsystem_configuration = build_string (EMACS_CONFIGURATION); | |
1256 | ||
76b3903d GV |
1257 | /* Another special case: on NT, the PATH variable is actually named |
1258 | "Path" although cmd.exe (perhaps NT itself) arranges for | |
1259 | environment variable lookup and setting to be case insensitive. | |
1260 | However, Emacs assumes a fully case sensitive environment, so we | |
1261 | need to change "Path" to "PATH" to match the expectations of | |
1262 | various elisp packages. We do this by the sneaky method of | |
1263 | modifying the string in the C runtime environ entry. | |
1264 | ||
1265 | The same applies to COMSPEC. */ | |
1266 | { | |
1267 | char ** envp; | |
1268 | ||
1269 | for (envp = environ; *envp; envp++) | |
1270 | if (_strnicmp (*envp, "PATH=", 5) == 0) | |
1271 | memcpy (*envp, "PATH=", 5); | |
1272 | else if (_strnicmp (*envp, "COMSPEC=", 8) == 0) | |
1273 | memcpy (*envp, "COMSPEC=", 8); | |
1274 | } | |
1275 | ||
1276 | /* Remember the initial working directory for getwd, then make the | |
1277 | real wd be the location of emacs.exe to avoid conflicts when | |
1278 | renaming or deleting directories. (We also don't call chdir when | |
1279 | running subprocesses for the same reason.) */ | |
1280 | if (!GetCurrentDirectory (MAXPATHLEN, startup_dir)) | |
1281 | abort (); | |
1282 | ||
1283 | { | |
1284 | char *p; | |
aa7b87b0 | 1285 | static char modname[MAX_PATH]; |
76b3903d GV |
1286 | |
1287 | if (!GetModuleFileName (NULL, modname, MAX_PATH)) | |
1288 | abort (); | |
1289 | if ((p = strrchr (modname, '\\')) == NULL) | |
1290 | abort (); | |
1291 | *p = 0; | |
1292 | ||
1293 | SetCurrentDirectory (modname); | |
aa7b87b0 AI |
1294 | |
1295 | /* Ensure argv[0] has the full path to Emacs. */ | |
1296 | *p = '\\'; | |
1297 | argv[0] = modname; | |
76b3903d GV |
1298 | } |
1299 | ||
20af4831 JR |
1300 | /* Determine if there is a middle mouse button, to allow parse_button |
1301 | to decide whether right mouse events should be mouse-2 or | |
1302 | mouse-3. */ | |
e0c181dd | 1303 | w32_num_mouse_buttons = GetSystemMetrics (SM_CMOUSEBUTTONS); |
20af4831 | 1304 | |
480b0c5b GV |
1305 | init_user_info (); |
1306 | } | |
1307 | ||
bf794306 EZ |
1308 | char * |
1309 | emacs_root_dir (void) | |
1310 | { | |
1311 | static char root_dir[FILENAME_MAX]; | |
1312 | const char *p; | |
1313 | ||
1314 | p = getenv ("emacs_dir"); | |
1315 | if (p == NULL) | |
1316 | abort (); | |
1317 | strcpy (root_dir, p); | |
1318 | root_dir[parse_root (root_dir, NULL)] = '\0'; | |
1319 | dostounix_filename (root_dir); | |
1320 | return root_dir; | |
1321 | } | |
1322 | ||
480b0c5b GV |
1323 | /* We don't have scripts to automatically determine the system configuration |
1324 | for Emacs before it's compiled, and we don't want to have to make the | |
1325 | user enter it, so we define EMACS_CONFIGURATION to invoke this runtime | |
1326 | routine. */ | |
1327 | ||
480b0c5b GV |
1328 | char * |
1329 | get_emacs_configuration (void) | |
1330 | { | |
1331 | char *arch, *oem, *os; | |
c5247da2 | 1332 | int build_num; |
a302c7ae | 1333 | static char configuration_buffer[32]; |
480b0c5b GV |
1334 | |
1335 | /* Determine the processor type. */ | |
177c0ea7 | 1336 | switch (get_processor_type ()) |
480b0c5b GV |
1337 | { |
1338 | ||
1339 | #ifdef PROCESSOR_INTEL_386 | |
1340 | case PROCESSOR_INTEL_386: | |
1341 | case PROCESSOR_INTEL_486: | |
1342 | case PROCESSOR_INTEL_PENTIUM: | |
1343 | arch = "i386"; | |
1344 | break; | |
1345 | #endif | |
1346 | ||
480b0c5b GV |
1347 | #ifdef PROCESSOR_MIPS_R2000 |
1348 | case PROCESSOR_MIPS_R2000: | |
1349 | case PROCESSOR_MIPS_R3000: | |
1350 | case PROCESSOR_MIPS_R4000: | |
1351 | arch = "mips"; | |
1352 | break; | |
1353 | #endif | |
1354 | ||
1355 | #ifdef PROCESSOR_ALPHA_21064 | |
1356 | case PROCESSOR_ALPHA_21064: | |
1357 | arch = "alpha"; | |
1358 | break; | |
1359 | #endif | |
1360 | ||
1361 | default: | |
1362 | arch = "unknown"; | |
1363 | break; | |
f332b293 | 1364 | } |
480b0c5b | 1365 | |
a302c7ae AI |
1366 | /* Use the OEM field to reflect the compiler/library combination. */ |
1367 | #ifdef _MSC_VER | |
1368 | #define COMPILER_NAME "msvc" | |
1369 | #else | |
1370 | #ifdef __GNUC__ | |
1371 | #define COMPILER_NAME "mingw" | |
1372 | #else | |
1373 | #define COMPILER_NAME "unknown" | |
1374 | #endif | |
1375 | #endif | |
1376 | oem = COMPILER_NAME; | |
480b0c5b | 1377 | |
c5247da2 GV |
1378 | switch (osinfo_cache.dwPlatformId) { |
1379 | case VER_PLATFORM_WIN32_NT: | |
1380 | os = "nt"; | |
1381 | build_num = osinfo_cache.dwBuildNumber; | |
1382 | break; | |
1383 | case VER_PLATFORM_WIN32_WINDOWS: | |
1384 | if (osinfo_cache.dwMinorVersion == 0) { | |
1385 | os = "windows95"; | |
1386 | } else { | |
1387 | os = "windows98"; | |
1388 | } | |
1389 | build_num = LOWORD (osinfo_cache.dwBuildNumber); | |
1390 | break; | |
1391 | case VER_PLATFORM_WIN32s: | |
1392 | /* Not supported, should not happen. */ | |
1393 | os = "windows32s"; | |
1394 | build_num = LOWORD (osinfo_cache.dwBuildNumber); | |
1395 | break; | |
1396 | default: | |
1397 | os = "unknown"; | |
1398 | build_num = 0; | |
1399 | break; | |
1400 | } | |
1401 | ||
1402 | if (osinfo_cache.dwPlatformId == VER_PLATFORM_WIN32_NT) { | |
1403 | sprintf (configuration_buffer, "%s-%s-%s%d.%d.%d", arch, oem, os, | |
1404 | get_w32_major_version (), get_w32_minor_version (), build_num); | |
1405 | } else { | |
1406 | sprintf (configuration_buffer, "%s-%s-%s.%d", arch, oem, os, build_num); | |
1407 | } | |
480b0c5b | 1408 | |
480b0c5b | 1409 | return configuration_buffer; |
f332b293 GV |
1410 | } |
1411 | ||
a302c7ae AI |
1412 | char * |
1413 | get_emacs_configuration_options (void) | |
1414 | { | |
1415 | static char options_buffer[256]; | |
1416 | ||
1417 | /* Work out the effective configure options for this build. */ | |
1418 | #ifdef _MSC_VER | |
1419 | #define COMPILER_VERSION "--with-msvc (%d.%02d)", _MSC_VER / 100, _MSC_VER % 100 | |
1420 | #else | |
1421 | #ifdef __GNUC__ | |
1422 | #define COMPILER_VERSION "--with-gcc (%d.%d)", __GNUC__, __GNUC_MINOR__ | |
1423 | #else | |
1424 | #define COMPILER_VERSION "" | |
1425 | #endif | |
1426 | #endif | |
1427 | ||
1428 | sprintf (options_buffer, COMPILER_VERSION); | |
1429 | #ifdef EMACSDEBUG | |
1430 | strcat (options_buffer, " --no-opt"); | |
1431 | #endif | |
1432 | #ifdef USER_CFLAGS | |
1433 | strcat (options_buffer, " --cflags"); | |
1434 | strcat (options_buffer, USER_CFLAGS); | |
1435 | #endif | |
1436 | #ifdef USER_LDFLAGS | |
1437 | strcat (options_buffer, " --ldflags"); | |
1438 | strcat (options_buffer, USER_LDFLAGS); | |
1439 | #endif | |
1440 | return options_buffer; | |
1441 | } | |
1442 | ||
1443 | ||
35f0d482 KH |
1444 | #include <sys/timeb.h> |
1445 | ||
1446 | /* Emulate gettimeofday (Ulrich Leodolter, 1/11/95). */ | |
177c0ea7 | 1447 | void |
35f0d482 KH |
1448 | gettimeofday (struct timeval *tv, struct timezone *tz) |
1449 | { | |
6e602566 | 1450 | struct _timeb tb; |
35f0d482 KH |
1451 | _ftime (&tb); |
1452 | ||
1453 | tv->tv_sec = tb.time; | |
1454 | tv->tv_usec = tb.millitm * 1000L; | |
177c0ea7 | 1455 | if (tz) |
35f0d482 KH |
1456 | { |
1457 | tz->tz_minuteswest = tb.timezone; /* minutes west of Greenwich */ | |
1458 | tz->tz_dsttime = tb.dstflag; /* type of dst correction */ | |
1459 | } | |
1460 | } | |
35f0d482 | 1461 | |
480b0c5b | 1462 | /* ------------------------------------------------------------------------- */ |
fbd6baed | 1463 | /* IO support and wrapper functions for W32 API. */ |
480b0c5b | 1464 | /* ------------------------------------------------------------------------- */ |
95ed0025 | 1465 | |
480b0c5b | 1466 | /* Place a wrapper around the MSVC version of ctime. It returns NULL |
177c0ea7 | 1467 | on network directories, so we handle that case here. |
480b0c5b GV |
1468 | (Ulrich Leodolter, 1/11/95). */ |
1469 | char * | |
1470 | sys_ctime (const time_t *t) | |
1471 | { | |
1472 | char *str = (char *) ctime (t); | |
1473 | return (str ? str : "Sun Jan 01 00:00:00 1970"); | |
1474 | } | |
1475 | ||
1476 | /* Emulate sleep...we could have done this with a define, but that | |
1477 | would necessitate including windows.h in the files that used it. | |
1478 | This is much easier. */ | |
1479 | void | |
1480 | sys_sleep (int seconds) | |
1481 | { | |
1482 | Sleep (seconds * 1000); | |
1483 | } | |
1484 | ||
76b3903d | 1485 | /* Internal MSVC functions for low-level descriptor munging */ |
480b0c5b GV |
1486 | extern int __cdecl _set_osfhnd (int fd, long h); |
1487 | extern int __cdecl _free_osfhnd (int fd); | |
1488 | ||
1489 | /* parallel array of private info on file handles */ | |
1490 | filedesc fd_info [ MAXDESC ]; | |
1491 | ||
76b3903d GV |
1492 | typedef struct volume_info_data { |
1493 | struct volume_info_data * next; | |
1494 | ||
1495 | /* time when info was obtained */ | |
1496 | DWORD timestamp; | |
1497 | ||
1498 | /* actual volume info */ | |
1499 | char * root_dir; | |
480b0c5b GV |
1500 | DWORD serialnum; |
1501 | DWORD maxcomp; | |
1502 | DWORD flags; | |
76b3903d GV |
1503 | char * name; |
1504 | char * type; | |
1505 | } volume_info_data; | |
1506 | ||
1507 | /* Global referenced by various functions. */ | |
1508 | static volume_info_data volume_info; | |
1509 | ||
1510 | /* Vector to indicate which drives are local and fixed (for which cached | |
1511 | data never expires). */ | |
1512 | static BOOL fixed_drives[26]; | |
1513 | ||
1514 | /* Consider cached volume information to be stale if older than 10s, | |
1515 | at least for non-local drives. Info for fixed drives is never stale. */ | |
1516 | #define DRIVE_INDEX( c ) ( (c) <= 'Z' ? (c) - 'A' : (c) - 'a' ) | |
1517 | #define VOLINFO_STILL_VALID( root_dir, info ) \ | |
1518 | ( ( isalpha (root_dir[0]) && \ | |
1519 | fixed_drives[ DRIVE_INDEX (root_dir[0]) ] ) \ | |
1520 | || GetTickCount () - info->timestamp < 10000 ) | |
1521 | ||
1522 | /* Cache support functions. */ | |
1523 | ||
1524 | /* Simple linked list with linear search is sufficient. */ | |
1525 | static volume_info_data *volume_cache = NULL; | |
1526 | ||
1527 | static volume_info_data * | |
1528 | lookup_volume_info (char * root_dir) | |
1529 | { | |
1530 | volume_info_data * info; | |
1531 | ||
1532 | for (info = volume_cache; info; info = info->next) | |
1533 | if (stricmp (info->root_dir, root_dir) == 0) | |
1534 | break; | |
1535 | return info; | |
1536 | } | |
1537 | ||
1538 | static void | |
1539 | add_volume_info (char * root_dir, volume_info_data * info) | |
1540 | { | |
a302c7ae | 1541 | info->root_dir = xstrdup (root_dir); |
76b3903d GV |
1542 | info->next = volume_cache; |
1543 | volume_cache = info; | |
1544 | } | |
1545 | ||
1546 | ||
1547 | /* Wrapper for GetVolumeInformation, which uses caching to avoid | |
1548 | performance penalty (~2ms on 486 for local drives, 7.5ms for local | |
1549 | cdrom drive, ~5-10ms or more for remote drives on LAN). */ | |
1550 | volume_info_data * | |
1551 | GetCachedVolumeInformation (char * root_dir) | |
1552 | { | |
1553 | volume_info_data * info; | |
1554 | char default_root[ MAX_PATH ]; | |
1555 | ||
1556 | /* NULL for root_dir means use root from current directory. */ | |
1557 | if (root_dir == NULL) | |
1558 | { | |
1559 | if (GetCurrentDirectory (MAX_PATH, default_root) == 0) | |
1560 | return NULL; | |
1561 | parse_root (default_root, &root_dir); | |
1562 | *root_dir = 0; | |
1563 | root_dir = default_root; | |
1564 | } | |
1565 | ||
1566 | /* Local fixed drives can be cached permanently. Removable drives | |
1567 | cannot be cached permanently, since the volume name and serial | |
1568 | number (if nothing else) can change. Remote drives should be | |
1569 | treated as if they are removable, since there is no sure way to | |
1570 | tell whether they are or not. Also, the UNC association of drive | |
1571 | letters mapped to remote volumes can be changed at any time (even | |
1572 | by other processes) without notice. | |
177c0ea7 | 1573 | |
76b3903d GV |
1574 | As a compromise, so we can benefit from caching info for remote |
1575 | volumes, we use a simple expiry mechanism to invalidate cache | |
1576 | entries that are more than ten seconds old. */ | |
1577 | ||
1578 | #if 0 | |
1579 | /* No point doing this, because WNetGetConnection is even slower than | |
1580 | GetVolumeInformation, consistently taking ~50ms on a 486 (FWIW, | |
1581 | GetDriveType is about the only call of this type which does not | |
1582 | involve network access, and so is extremely quick). */ | |
1583 | ||
1584 | /* Map drive letter to UNC if remote. */ | |
1585 | if ( isalpha( root_dir[0] ) && !fixed[ DRIVE_INDEX( root_dir[0] ) ] ) | |
1586 | { | |
1587 | char remote_name[ 256 ]; | |
1588 | char drive[3] = { root_dir[0], ':' }; | |
1589 | ||
1590 | if (WNetGetConnection (drive, remote_name, sizeof (remote_name)) | |
1591 | == NO_ERROR) | |
1592 | /* do something */ ; | |
1593 | } | |
1594 | #endif | |
1595 | ||
1596 | info = lookup_volume_info (root_dir); | |
1597 | ||
1598 | if (info == NULL || ! VOLINFO_STILL_VALID (root_dir, info)) | |
1599 | { | |
1600 | char name[ 256 ]; | |
1601 | DWORD serialnum; | |
1602 | DWORD maxcomp; | |
1603 | DWORD flags; | |
1604 | char type[ 256 ]; | |
1605 | ||
1606 | /* Info is not cached, or is stale. */ | |
1607 | if (!GetVolumeInformation (root_dir, | |
1608 | name, sizeof (name), | |
1609 | &serialnum, | |
1610 | &maxcomp, | |
1611 | &flags, | |
1612 | type, sizeof (type))) | |
1613 | return NULL; | |
1614 | ||
1615 | /* Cache the volume information for future use, overwriting existing | |
1616 | entry if present. */ | |
1617 | if (info == NULL) | |
1618 | { | |
1619 | info = (volume_info_data *) xmalloc (sizeof (volume_info_data)); | |
1620 | add_volume_info (root_dir, info); | |
1621 | } | |
1622 | else | |
1623 | { | |
a302c7ae AI |
1624 | xfree (info->name); |
1625 | xfree (info->type); | |
76b3903d GV |
1626 | } |
1627 | ||
a302c7ae | 1628 | info->name = xstrdup (name); |
76b3903d GV |
1629 | info->serialnum = serialnum; |
1630 | info->maxcomp = maxcomp; | |
1631 | info->flags = flags; | |
a302c7ae | 1632 | info->type = xstrdup (type); |
76b3903d GV |
1633 | info->timestamp = GetTickCount (); |
1634 | } | |
1635 | ||
1636 | return info; | |
1637 | } | |
480b0c5b GV |
1638 | |
1639 | /* Get information on the volume where name is held; set path pointer to | |
1640 | start of pathname in name (past UNC header\volume header if present). */ | |
1641 | int | |
1642 | get_volume_info (const char * name, const char ** pPath) | |
95ed0025 | 1643 | { |
480b0c5b GV |
1644 | char temp[MAX_PATH]; |
1645 | char *rootname = NULL; /* default to current volume */ | |
76b3903d | 1646 | volume_info_data * info; |
480b0c5b GV |
1647 | |
1648 | if (name == NULL) | |
1649 | return FALSE; | |
1650 | ||
1651 | /* find the root name of the volume if given */ | |
1652 | if (isalpha (name[0]) && name[1] == ':') | |
1653 | { | |
1654 | rootname = temp; | |
1655 | temp[0] = *name++; | |
1656 | temp[1] = *name++; | |
1657 | temp[2] = '\\'; | |
1658 | temp[3] = 0; | |
1659 | } | |
1660 | else if (IS_DIRECTORY_SEP (name[0]) && IS_DIRECTORY_SEP (name[1])) | |
95ed0025 | 1661 | { |
480b0c5b GV |
1662 | char *str = temp; |
1663 | int slashes = 4; | |
1664 | rootname = temp; | |
1665 | do | |
1666 | { | |
1667 | if (IS_DIRECTORY_SEP (*name) && --slashes == 0) | |
1668 | break; | |
1669 | *str++ = *name++; | |
1670 | } | |
1671 | while ( *name ); | |
1672 | ||
480b0c5b GV |
1673 | *str++ = '\\'; |
1674 | *str = 0; | |
95ed0025 | 1675 | } |
480b0c5b GV |
1676 | |
1677 | if (pPath) | |
1678 | *pPath = name; | |
177c0ea7 | 1679 | |
76b3903d GV |
1680 | info = GetCachedVolumeInformation (rootname); |
1681 | if (info != NULL) | |
95ed0025 | 1682 | { |
76b3903d GV |
1683 | /* Set global referenced by other functions. */ |
1684 | volume_info = *info; | |
480b0c5b | 1685 | return TRUE; |
95ed0025 | 1686 | } |
480b0c5b GV |
1687 | return FALSE; |
1688 | } | |
1689 | ||
1690 | /* Determine if volume is FAT format (ie. only supports short 8.3 | |
1691 | names); also set path pointer to start of pathname in name. */ | |
1692 | int | |
1693 | is_fat_volume (const char * name, const char ** pPath) | |
1694 | { | |
1695 | if (get_volume_info (name, pPath)) | |
1696 | return (volume_info.maxcomp == 12); | |
1697 | return FALSE; | |
1698 | } | |
1699 | ||
4d90eee4 | 1700 | /* Map filename to a valid 8.3 name if necessary. */ |
480b0c5b | 1701 | const char * |
fbd6baed | 1702 | map_w32_filename (const char * name, const char ** pPath) |
480b0c5b GV |
1703 | { |
1704 | static char shortname[MAX_PATH]; | |
1705 | char * str = shortname; | |
1706 | char c; | |
480b0c5b | 1707 | char * path; |
76b3903d | 1708 | const char * save_name = name; |
480b0c5b | 1709 | |
ca149beb AI |
1710 | if (strlen (name) >= MAX_PATH) |
1711 | { | |
1712 | /* Return a filename which will cause callers to fail. */ | |
1713 | strcpy (shortname, "?"); | |
1714 | return shortname; | |
1715 | } | |
1716 | ||
a302c7ae | 1717 | if (is_fat_volume (name, (const char **)&path)) /* truncate to 8.3 */ |
95ed0025 | 1718 | { |
480b0c5b GV |
1719 | register int left = 8; /* maximum number of chars in part */ |
1720 | register int extn = 0; /* extension added? */ | |
1721 | register int dots = 2; /* maximum number of dots allowed */ | |
1722 | ||
1723 | while (name < path) | |
1724 | *str++ = *name++; /* skip past UNC header */ | |
1725 | ||
1726 | while ((c = *name++)) | |
1727 | { | |
1728 | switch ( c ) | |
1729 | { | |
1730 | case '\\': | |
1731 | case '/': | |
1732 | *str++ = '\\'; | |
1733 | extn = 0; /* reset extension flags */ | |
1734 | dots = 2; /* max 2 dots */ | |
1735 | left = 8; /* max length 8 for main part */ | |
1736 | break; | |
1737 | case ':': | |
1738 | *str++ = ':'; | |
1739 | extn = 0; /* reset extension flags */ | |
1740 | dots = 2; /* max 2 dots */ | |
1741 | left = 8; /* max length 8 for main part */ | |
1742 | break; | |
1743 | case '.': | |
1744 | if ( dots ) | |
1745 | { | |
1746 | /* Convert path components of the form .xxx to _xxx, | |
1747 | but leave . and .. as they are. This allows .emacs | |
1748 | to be read as _emacs, for example. */ | |
1749 | ||
1750 | if (! *name || | |
1751 | *name == '.' || | |
1752 | IS_DIRECTORY_SEP (*name)) | |
1753 | { | |
1754 | *str++ = '.'; | |
1755 | dots--; | |
1756 | } | |
1757 | else | |
1758 | { | |
1759 | *str++ = '_'; | |
1760 | left--; | |
1761 | dots = 0; | |
1762 | } | |
1763 | } | |
1764 | else if ( !extn ) | |
1765 | { | |
1766 | *str++ = '.'; | |
1767 | extn = 1; /* we've got an extension */ | |
1768 | left = 3; /* 3 chars in extension */ | |
1769 | } | |
1770 | else | |
1771 | { | |
1772 | /* any embedded dots after the first are converted to _ */ | |
1773 | *str++ = '_'; | |
1774 | } | |
1775 | break; | |
1776 | case '~': | |
1777 | case '#': /* don't lose these, they're important */ | |
1778 | if ( ! left ) | |
1779 | str[-1] = c; /* replace last character of part */ | |
1780 | /* FALLTHRU */ | |
1781 | default: | |
1782 | if ( left ) | |
1783 | { | |
1784 | *str++ = tolower (c); /* map to lower case (looks nicer) */ | |
1785 | left--; | |
1786 | dots = 0; /* started a path component */ | |
1787 | } | |
1788 | break; | |
1789 | } | |
1790 | } | |
1791 | *str = '\0'; | |
fc85cb29 RS |
1792 | } |
1793 | else | |
1794 | { | |
1795 | strcpy (shortname, name); | |
1796 | unixtodos_filename (shortname); | |
95ed0025 | 1797 | } |
480b0c5b GV |
1798 | |
1799 | if (pPath) | |
76b3903d | 1800 | *pPath = shortname + (path - save_name); |
480b0c5b | 1801 | |
fc85cb29 | 1802 | return shortname; |
480b0c5b GV |
1803 | } |
1804 | ||
b3308d2e KH |
1805 | static int |
1806 | is_exec (const char * name) | |
1807 | { | |
1808 | char * p = strrchr (name, '.'); | |
1809 | return | |
1810 | (p != NULL | |
1811 | && (stricmp (p, ".exe") == 0 || | |
1812 | stricmp (p, ".com") == 0 || | |
1813 | stricmp (p, ".bat") == 0 || | |
1814 | stricmp (p, ".cmd") == 0)); | |
1815 | } | |
1816 | ||
177c0ea7 | 1817 | /* Emulate the Unix directory procedures opendir, closedir, |
76b3903d GV |
1818 | and readdir. We can't use the procedures supplied in sysdep.c, |
1819 | so we provide them here. */ | |
1820 | ||
1821 | struct direct dir_static; /* simulated directory contents */ | |
1822 | static HANDLE dir_find_handle = INVALID_HANDLE_VALUE; | |
1823 | static int dir_is_fat; | |
1824 | static char dir_pathname[MAXPATHLEN+1]; | |
1825 | static WIN32_FIND_DATA dir_find_data; | |
1826 | ||
9d3355d1 GV |
1827 | /* Support shares on a network resource as subdirectories of a read-only |
1828 | root directory. */ | |
1829 | static HANDLE wnet_enum_handle = INVALID_HANDLE_VALUE; | |
e0c181dd | 1830 | HANDLE open_unc_volume (const char *); |
9d3355d1 GV |
1831 | char *read_unc_volume (HANDLE, char *, int); |
1832 | void close_unc_volume (HANDLE); | |
1833 | ||
76b3903d GV |
1834 | DIR * |
1835 | opendir (char *filename) | |
1836 | { | |
1837 | DIR *dirp; | |
1838 | ||
1839 | /* Opening is done by FindFirstFile. However, a read is inherent to | |
1840 | this operation, so we defer the open until read time. */ | |
1841 | ||
76b3903d GV |
1842 | if (dir_find_handle != INVALID_HANDLE_VALUE) |
1843 | return NULL; | |
9d3355d1 GV |
1844 | if (wnet_enum_handle != INVALID_HANDLE_VALUE) |
1845 | return NULL; | |
1846 | ||
1847 | if (is_unc_volume (filename)) | |
1848 | { | |
1849 | wnet_enum_handle = open_unc_volume (filename); | |
1850 | if (wnet_enum_handle == INVALID_HANDLE_VALUE) | |
1851 | return NULL; | |
1852 | } | |
1853 | ||
1854 | if (!(dirp = (DIR *) malloc (sizeof (DIR)))) | |
1855 | return NULL; | |
76b3903d GV |
1856 | |
1857 | dirp->dd_fd = 0; | |
1858 | dirp->dd_loc = 0; | |
1859 | dirp->dd_size = 0; | |
1860 | ||
1861 | strncpy (dir_pathname, map_w32_filename (filename, NULL), MAXPATHLEN); | |
1862 | dir_pathname[MAXPATHLEN] = '\0'; | |
1863 | dir_is_fat = is_fat_volume (filename, NULL); | |
1864 | ||
1865 | return dirp; | |
1866 | } | |
1867 | ||
1868 | void | |
1869 | closedir (DIR *dirp) | |
1870 | { | |
1871 | /* If we have a find-handle open, close it. */ | |
1872 | if (dir_find_handle != INVALID_HANDLE_VALUE) | |
1873 | { | |
1874 | FindClose (dir_find_handle); | |
1875 | dir_find_handle = INVALID_HANDLE_VALUE; | |
1876 | } | |
9d3355d1 GV |
1877 | else if (wnet_enum_handle != INVALID_HANDLE_VALUE) |
1878 | { | |
1879 | close_unc_volume (wnet_enum_handle); | |
1880 | wnet_enum_handle = INVALID_HANDLE_VALUE; | |
1881 | } | |
76b3903d GV |
1882 | xfree ((char *) dirp); |
1883 | } | |
1884 | ||
1885 | struct direct * | |
1886 | readdir (DIR *dirp) | |
1887 | { | |
b07103dc EZ |
1888 | int downcase = !NILP (Vw32_downcase_file_names); |
1889 | ||
9d3355d1 GV |
1890 | if (wnet_enum_handle != INVALID_HANDLE_VALUE) |
1891 | { | |
177c0ea7 JB |
1892 | if (!read_unc_volume (wnet_enum_handle, |
1893 | dir_find_data.cFileName, | |
9d3355d1 GV |
1894 | MAX_PATH)) |
1895 | return NULL; | |
1896 | } | |
76b3903d | 1897 | /* If we aren't dir_finding, do a find-first, otherwise do a find-next. */ |
9d3355d1 | 1898 | else if (dir_find_handle == INVALID_HANDLE_VALUE) |
76b3903d GV |
1899 | { |
1900 | char filename[MAXNAMLEN + 3]; | |
1901 | int ln; | |
1902 | ||
1903 | strcpy (filename, dir_pathname); | |
1904 | ln = strlen (filename) - 1; | |
1905 | if (!IS_DIRECTORY_SEP (filename[ln])) | |
1906 | strcat (filename, "\\"); | |
1907 | strcat (filename, "*"); | |
1908 | ||
1909 | dir_find_handle = FindFirstFile (filename, &dir_find_data); | |
1910 | ||
1911 | if (dir_find_handle == INVALID_HANDLE_VALUE) | |
1912 | return NULL; | |
1913 | } | |
1914 | else | |
1915 | { | |
1916 | if (!FindNextFile (dir_find_handle, &dir_find_data)) | |
1917 | return NULL; | |
1918 | } | |
177c0ea7 | 1919 | |
76b3903d GV |
1920 | /* Emacs never uses this value, so don't bother making it match |
1921 | value returned by stat(). */ | |
1922 | dir_static.d_ino = 1; | |
177c0ea7 | 1923 | |
b07103dc EZ |
1924 | strcpy (dir_static.d_name, dir_find_data.cFileName); |
1925 | ||
1926 | /* If the file name in cFileName[] includes `?' characters, it means | |
1927 | the original file name used characters that cannot be represented | |
1928 | by the current ANSI codepage. To avoid total lossage, retrieve | |
1929 | the short 8+3 alias of the long file name. */ | |
1930 | if (_mbspbrk (dir_static.d_name, "?")) | |
1931 | { | |
1932 | strcpy (dir_static.d_name, dir_find_data.cAlternateFileName); | |
1933 | downcase = 1; /* 8+3 aliases are returned in all caps */ | |
1934 | } | |
1935 | dir_static.d_namlen = strlen (dir_static.d_name); | |
76b3903d GV |
1936 | dir_static.d_reclen = sizeof (struct direct) - MAXNAMLEN + 3 + |
1937 | dir_static.d_namlen - dir_static.d_namlen % 4; | |
177c0ea7 | 1938 | |
192788d7 EZ |
1939 | /* If the file name in cFileName[] includes `?' characters, it means |
1940 | the original file name used characters that cannot be represented | |
1941 | by the current ANSI codepage. To avoid total lossage, retrieve | |
1942 | the short 8+3 alias of the long file name. */ | |
1943 | if (_mbspbrk (dir_find_data.cFileName, "?")) | |
1944 | { | |
1945 | strcpy (dir_static.d_name, dir_find_data.cAlternateFileName); | |
1946 | /* 8+3 aliases are returned in all caps, which could break | |
1947 | various alists that look at filenames' extensions. */ | |
1948 | downcase = 1; | |
1949 | } | |
1950 | else | |
1951 | strcpy (dir_static.d_name, dir_find_data.cFileName); | |
1952 | dir_static.d_namlen = strlen (dir_static.d_name); | |
76b3903d GV |
1953 | if (dir_is_fat) |
1954 | _strlwr (dir_static.d_name); | |
b07103dc | 1955 | else if (downcase) |
76b3903d GV |
1956 | { |
1957 | register char *p; | |
1958 | for (p = dir_static.d_name; *p; p++) | |
1959 | if (*p >= 'a' && *p <= 'z') | |
1960 | break; | |
1961 | if (!*p) | |
1962 | _strlwr (dir_static.d_name); | |
1963 | } | |
177c0ea7 | 1964 | |
76b3903d GV |
1965 | return &dir_static; |
1966 | } | |
1967 | ||
9d3355d1 | 1968 | HANDLE |
e0c181dd | 1969 | open_unc_volume (const char *path) |
9d3355d1 | 1970 | { |
177c0ea7 | 1971 | NETRESOURCE nr; |
9d3355d1 GV |
1972 | HANDLE henum; |
1973 | int result; | |
1974 | ||
177c0ea7 JB |
1975 | nr.dwScope = RESOURCE_GLOBALNET; |
1976 | nr.dwType = RESOURCETYPE_DISK; | |
1977 | nr.dwDisplayType = RESOURCEDISPLAYTYPE_SERVER; | |
1978 | nr.dwUsage = RESOURCEUSAGE_CONTAINER; | |
1979 | nr.lpLocalName = NULL; | |
6e602566 | 1980 | nr.lpRemoteName = (LPSTR)map_w32_filename (path, NULL); |
177c0ea7 JB |
1981 | nr.lpComment = NULL; |
1982 | nr.lpProvider = NULL; | |
9d3355d1 | 1983 | |
177c0ea7 | 1984 | result = WNetOpenEnum(RESOURCE_GLOBALNET, RESOURCETYPE_DISK, |
9d3355d1 GV |
1985 | RESOURCEUSAGE_CONNECTABLE, &nr, &henum); |
1986 | ||
1987 | if (result == NO_ERROR) | |
1988 | return henum; | |
1989 | else | |
1990 | return INVALID_HANDLE_VALUE; | |
1991 | } | |
1992 | ||
1993 | char * | |
1994 | read_unc_volume (HANDLE henum, char *readbuf, int size) | |
1995 | { | |
a302c7ae | 1996 | DWORD count; |
9d3355d1 | 1997 | int result; |
a302c7ae | 1998 | DWORD bufsize = 512; |
9d3355d1 GV |
1999 | char *buffer; |
2000 | char *ptr; | |
2001 | ||
2002 | count = 1; | |
2003 | buffer = alloca (bufsize); | |
2004 | result = WNetEnumResource (wnet_enum_handle, &count, buffer, &bufsize); | |
2005 | if (result != NO_ERROR) | |
2006 | return NULL; | |
2007 | ||
2008 | /* WNetEnumResource returns \\resource\share...skip forward to "share". */ | |
2009 | ptr = ((LPNETRESOURCE) buffer)->lpRemoteName; | |
2010 | ptr += 2; | |
2011 | while (*ptr && !IS_DIRECTORY_SEP (*ptr)) ptr++; | |
2012 | ptr++; | |
2013 | ||
2014 | strncpy (readbuf, ptr, size); | |
2015 | return readbuf; | |
2016 | } | |
2017 | ||
2018 | void | |
2019 | close_unc_volume (HANDLE henum) | |
2020 | { | |
2021 | if (henum != INVALID_HANDLE_VALUE) | |
2022 | WNetCloseEnum (henum); | |
2023 | } | |
2024 | ||
2025 | DWORD | |
e0c181dd | 2026 | unc_volume_file_attributes (const char *path) |
9d3355d1 GV |
2027 | { |
2028 | HANDLE henum; | |
2029 | DWORD attrs; | |
2030 | ||
2031 | henum = open_unc_volume (path); | |
2032 | if (henum == INVALID_HANDLE_VALUE) | |
2033 | return -1; | |
2034 | ||
2035 | attrs = FILE_ATTRIBUTE_READONLY | FILE_ATTRIBUTE_DIRECTORY; | |
2036 | ||
2037 | close_unc_volume (henum); | |
2038 | ||
2039 | return attrs; | |
2040 | } | |
2041 | ||
302d7d54 JR |
2042 | /* Ensure a network connection is authenticated. */ |
2043 | static void | |
2044 | logon_network_drive (const char *path) | |
2045 | { | |
2046 | NETRESOURCE resource; | |
2047 | char share[MAX_PATH]; | |
2048 | int i, n_slashes; | |
2049 | ||
2050 | /* Only logon to networked drives. */ | |
2051 | if (!IS_DIRECTORY_SEP (path[0]) || !IS_DIRECTORY_SEP (path[1])) | |
2052 | return; | |
2053 | n_slashes = 2; | |
2054 | strncpy (share, path, MAX_PATH); | |
2055 | /* Truncate to just server and share name. */ | |
2056 | for (i = 2; i < MAX_PATH; i++) | |
2057 | { | |
2058 | if (IS_DIRECTORY_SEP (share[i]) && ++n_slashes > 3) | |
2059 | { | |
2060 | share[i] = '\0'; | |
2061 | break; | |
2062 | } | |
2063 | } | |
2064 | ||
2065 | resource.dwType = RESOURCETYPE_DISK; | |
2066 | resource.lpLocalName = NULL; | |
2067 | resource.lpRemoteName = share; | |
2068 | resource.lpProvider = NULL; | |
2069 | ||
2070 | WNetAddConnection2 (&resource, NULL, NULL, CONNECT_INTERACTIVE); | |
2071 | } | |
480b0c5b GV |
2072 | |
2073 | /* Shadow some MSVC runtime functions to map requests for long filenames | |
2074 | to reasonable short names if necessary. This was originally added to | |
177c0ea7 | 2075 | permit running Emacs on NT 3.1 on a FAT partition, which doesn't support |
480b0c5b GV |
2076 | long file names. */ |
2077 | ||
2078 | int | |
2079 | sys_access (const char * path, int mode) | |
2080 | { | |
b3308d2e KH |
2081 | DWORD attributes; |
2082 | ||
2083 | /* MSVC implementation doesn't recognize D_OK. */ | |
2084 | path = map_w32_filename (path, NULL); | |
9d3355d1 GV |
2085 | if (is_unc_volume (path)) |
2086 | { | |
2087 | attributes = unc_volume_file_attributes (path); | |
2088 | if (attributes == -1) { | |
2089 | errno = EACCES; | |
2090 | return -1; | |
2091 | } | |
2092 | } | |
2093 | else if ((attributes = GetFileAttributes (path)) == -1) | |
b3308d2e KH |
2094 | { |
2095 | /* Should try mapping GetLastError to errno; for now just indicate | |
2096 | that path doesn't exist. */ | |
2097 | errno = EACCES; | |
2098 | return -1; | |
2099 | } | |
2100 | if ((mode & X_OK) != 0 && !is_exec (path)) | |
2101 | { | |
2102 | errno = EACCES; | |
2103 | return -1; | |
2104 | } | |
2105 | if ((mode & W_OK) != 0 && (attributes & FILE_ATTRIBUTE_READONLY) != 0) | |
2106 | { | |
2107 | errno = EACCES; | |
2108 | return -1; | |
2109 | } | |
2110 | if ((mode & D_OK) != 0 && (attributes & FILE_ATTRIBUTE_DIRECTORY) == 0) | |
2111 | { | |
2112 | errno = EACCES; | |
2113 | return -1; | |
2114 | } | |
2115 | return 0; | |
480b0c5b GV |
2116 | } |
2117 | ||
2118 | int | |
2119 | sys_chdir (const char * path) | |
2120 | { | |
fbd6baed | 2121 | return _chdir (map_w32_filename (path, NULL)); |
480b0c5b GV |
2122 | } |
2123 | ||
2124 | int | |
2125 | sys_chmod (const char * path, int mode) | |
2126 | { | |
fbd6baed | 2127 | return _chmod (map_w32_filename (path, NULL), mode); |
480b0c5b GV |
2128 | } |
2129 | ||
2d5ab4bf EZ |
2130 | int |
2131 | sys_chown (const char *path, uid_t owner, gid_t group) | |
2132 | { | |
e3b88685 | 2133 | if (sys_chmod (path, S_IREAD) == -1) /* check if file exists */ |
2d5ab4bf EZ |
2134 | return -1; |
2135 | return 0; | |
2136 | } | |
2137 | ||
480b0c5b GV |
2138 | int |
2139 | sys_creat (const char * path, int mode) | |
2140 | { | |
fbd6baed | 2141 | return _creat (map_w32_filename (path, NULL), mode); |
480b0c5b GV |
2142 | } |
2143 | ||
2144 | FILE * | |
2145 | sys_fopen(const char * path, const char * mode) | |
2146 | { | |
2147 | int fd; | |
2148 | int oflag; | |
2149 | const char * mode_save = mode; | |
2150 | ||
2151 | /* Force all file handles to be non-inheritable. This is necessary to | |
2152 | ensure child processes don't unwittingly inherit handles that might | |
2153 | prevent future file access. */ | |
2154 | ||
2155 | if (mode[0] == 'r') | |
2156 | oflag = O_RDONLY; | |
2157 | else if (mode[0] == 'w' || mode[0] == 'a') | |
2158 | oflag = O_WRONLY | O_CREAT | O_TRUNC; | |
95ed0025 | 2159 | else |
480b0c5b GV |
2160 | return NULL; |
2161 | ||
2162 | /* Only do simplistic option parsing. */ | |
2163 | while (*++mode) | |
2164 | if (mode[0] == '+') | |
2165 | { | |
2166 | oflag &= ~(O_RDONLY | O_WRONLY); | |
2167 | oflag |= O_RDWR; | |
2168 | } | |
2169 | else if (mode[0] == 'b') | |
2170 | { | |
2171 | oflag &= ~O_TEXT; | |
2172 | oflag |= O_BINARY; | |
2173 | } | |
2174 | else if (mode[0] == 't') | |
2175 | { | |
2176 | oflag &= ~O_BINARY; | |
2177 | oflag |= O_TEXT; | |
2178 | } | |
2179 | else break; | |
2180 | ||
fbd6baed | 2181 | fd = _open (map_w32_filename (path, NULL), oflag | _O_NOINHERIT, 0644); |
480b0c5b GV |
2182 | if (fd < 0) |
2183 | return NULL; | |
2184 | ||
76b3903d | 2185 | return _fdopen (fd, mode_save); |
95ed0025 | 2186 | } |
480b0c5b | 2187 | |
76b3903d | 2188 | /* This only works on NTFS volumes, but is useful to have. */ |
480b0c5b | 2189 | int |
76b3903d | 2190 | sys_link (const char * old, const char * new) |
480b0c5b | 2191 | { |
76b3903d GV |
2192 | HANDLE fileh; |
2193 | int result = -1; | |
2194 | char oldname[MAX_PATH], newname[MAX_PATH]; | |
2195 | ||
2196 | if (old == NULL || new == NULL) | |
2197 | { | |
2198 | errno = ENOENT; | |
2199 | return -1; | |
2200 | } | |
2201 | ||
2202 | strcpy (oldname, map_w32_filename (old, NULL)); | |
2203 | strcpy (newname, map_w32_filename (new, NULL)); | |
2204 | ||
2205 | fileh = CreateFile (oldname, 0, 0, NULL, OPEN_EXISTING, | |
2206 | FILE_FLAG_BACKUP_SEMANTICS, NULL); | |
2207 | if (fileh != INVALID_HANDLE_VALUE) | |
2208 | { | |
2209 | int wlen; | |
2210 | ||
2211 | /* Confusingly, the "alternate" stream name field does not apply | |
2212 | when restoring a hard link, and instead contains the actual | |
2213 | stream data for the link (ie. the name of the link to create). | |
2214 | The WIN32_STREAM_ID structure before the cStreamName field is | |
2215 | the stream header, which is then immediately followed by the | |
2216 | stream data. */ | |
2217 | ||
2218 | struct { | |
2219 | WIN32_STREAM_ID wid; | |
2220 | WCHAR wbuffer[MAX_PATH]; /* extra space for link name */ | |
2221 | } data; | |
2222 | ||
2223 | wlen = MultiByteToWideChar (CP_ACP, MB_PRECOMPOSED, newname, -1, | |
2224 | data.wid.cStreamName, MAX_PATH); | |
2225 | if (wlen > 0) | |
2226 | { | |
2227 | LPVOID context = NULL; | |
2228 | DWORD wbytes = 0; | |
2229 | ||
2230 | data.wid.dwStreamId = BACKUP_LINK; | |
2231 | data.wid.dwStreamAttributes = 0; | |
2232 | data.wid.Size.LowPart = wlen * sizeof(WCHAR); | |
2233 | data.wid.Size.HighPart = 0; | |
2234 | data.wid.dwStreamNameSize = 0; | |
2235 | ||
2236 | if (BackupWrite (fileh, (LPBYTE)&data, | |
2237 | offsetof (WIN32_STREAM_ID, cStreamName) | |
2238 | + data.wid.Size.LowPart, | |
2239 | &wbytes, FALSE, FALSE, &context) | |
2240 | && BackupWrite (fileh, NULL, 0, &wbytes, TRUE, FALSE, &context)) | |
2241 | { | |
2242 | /* succeeded */ | |
2243 | result = 0; | |
2244 | } | |
2245 | else | |
2246 | { | |
2247 | /* Should try mapping GetLastError to errno; for now just | |
2248 | indicate a general error (eg. links not supported). */ | |
2249 | errno = EINVAL; // perhaps EMLINK? | |
2250 | } | |
2251 | } | |
2252 | ||
2253 | CloseHandle (fileh); | |
2254 | } | |
2255 | else | |
2256 | errno = ENOENT; | |
2257 | ||
2258 | return result; | |
480b0c5b GV |
2259 | } |
2260 | ||
2261 | int | |
2262 | sys_mkdir (const char * path) | |
2263 | { | |
fbd6baed | 2264 | return _mkdir (map_w32_filename (path, NULL)); |
480b0c5b GV |
2265 | } |
2266 | ||
9d1778b1 RS |
2267 | /* Because of long name mapping issues, we need to implement this |
2268 | ourselves. Also, MSVC's _mktemp returns NULL when it can't generate | |
2269 | a unique name, instead of setting the input template to an empty | |
2270 | string. | |
2271 | ||
2272 | Standard algorithm seems to be use pid or tid with a letter on the | |
2273 | front (in place of the 6 X's) and cycle through the letters to find a | |
2274 | unique name. We extend that to allow any reasonable character as the | |
2275 | first of the 6 X's. */ | |
480b0c5b GV |
2276 | char * |
2277 | sys_mktemp (char * template) | |
2278 | { | |
9d1778b1 RS |
2279 | char * p; |
2280 | int i; | |
2281 | unsigned uid = GetCurrentThreadId (); | |
2282 | static char first_char[] = "abcdefghijklmnopqrstuvwyz0123456789!%-_@#"; | |
2283 | ||
2284 | if (template == NULL) | |
2285 | return NULL; | |
2286 | p = template + strlen (template); | |
2287 | i = 5; | |
2288 | /* replace up to the last 5 X's with uid in decimal */ | |
2289 | while (--p >= template && p[0] == 'X' && --i >= 0) | |
2290 | { | |
2291 | p[0] = '0' + uid % 10; | |
2292 | uid /= 10; | |
2293 | } | |
2294 | ||
2295 | if (i < 0 && p[0] == 'X') | |
2296 | { | |
2297 | i = 0; | |
2298 | do | |
2299 | { | |
2300 | int save_errno = errno; | |
2301 | p[0] = first_char[i]; | |
2302 | if (sys_access (template, 0) < 0) | |
2303 | { | |
2304 | errno = save_errno; | |
2305 | return template; | |
2306 | } | |
2307 | } | |
2308 | while (++i < sizeof (first_char)); | |
2309 | } | |
2310 | ||
2311 | /* Template is badly formed or else we can't generate a unique name, | |
2312 | so return empty string */ | |
2313 | template[0] = 0; | |
2314 | return template; | |
480b0c5b GV |
2315 | } |
2316 | ||
2317 | int | |
2318 | sys_open (const char * path, int oflag, int mode) | |
2319 | { | |
302f0b29 GM |
2320 | const char* mpath = map_w32_filename (path, NULL); |
2321 | /* Try to open file without _O_CREAT, to be able to write to hidden | |
2322 | and system files. Force all file handles to be | |
2323 | non-inheritable. */ | |
2324 | int res = _open (mpath, (oflag & ~_O_CREAT) | _O_NOINHERIT, mode); | |
2325 | if (res >= 0) | |
2326 | return res; | |
2327 | return _open (mpath, oflag | _O_NOINHERIT, mode); | |
480b0c5b GV |
2328 | } |
2329 | ||
2330 | int | |
2331 | sys_rename (const char * oldname, const char * newname) | |
2332 | { | |
cfb5e855 | 2333 | BOOL result; |
b3308d2e | 2334 | char temp[MAX_PATH]; |
480b0c5b | 2335 | |
e9e23e23 | 2336 | /* MoveFile on Windows 95 doesn't correctly change the short file name |
5162ffce MB |
2337 | alias in a number of circumstances (it is not easy to predict when |
2338 | just by looking at oldname and newname, unfortunately). In these | |
2339 | cases, renaming through a temporary name avoids the problem. | |
2340 | ||
e9e23e23 | 2341 | A second problem on Windows 95 is that renaming through a temp name when |
5162ffce MB |
2342 | newname is uppercase fails (the final long name ends up in |
2343 | lowercase, although the short alias might be uppercase) UNLESS the | |
2344 | long temp name is not 8.3. | |
2345 | ||
e9e23e23 | 2346 | So, on Windows 95 we always rename through a temp name, and we make sure |
5162ffce | 2347 | the temp name has a long extension to ensure correct renaming. */ |
480b0c5b | 2348 | |
fbd6baed | 2349 | strcpy (temp, map_w32_filename (oldname, NULL)); |
480b0c5b | 2350 | |
76b3903d | 2351 | if (os_subtype == OS_WIN95) |
480b0c5b | 2352 | { |
b3308d2e | 2353 | char * o; |
480b0c5b | 2354 | char * p; |
b3308d2e KH |
2355 | int i = 0; |
2356 | ||
2357 | oldname = map_w32_filename (oldname, NULL); | |
2358 | if (o = strrchr (oldname, '\\')) | |
2359 | o++; | |
2360 | else | |
2361 | o = (char *) oldname; | |
480b0c5b | 2362 | |
480b0c5b GV |
2363 | if (p = strrchr (temp, '\\')) |
2364 | p++; | |
2365 | else | |
2366 | p = temp; | |
b3308d2e KH |
2367 | |
2368 | do | |
2369 | { | |
2370 | /* Force temp name to require a manufactured 8.3 alias - this | |
2371 | seems to make the second rename work properly. */ | |
f313ee82 | 2372 | sprintf (p, "_.%s.%u", o, i); |
b3308d2e | 2373 | i++; |
58f0cb7e | 2374 | result = rename (oldname, temp); |
b3308d2e KH |
2375 | } |
2376 | /* This loop must surely terminate! */ | |
cfb5e855 | 2377 | while (result < 0 && errno == EEXIST); |
58f0cb7e | 2378 | if (result < 0) |
480b0c5b GV |
2379 | return -1; |
2380 | } | |
2381 | ||
2382 | /* Emulate Unix behaviour - newname is deleted if it already exists | |
5162ffce | 2383 | (at least if it is a file; don't do this for directories). |
76b3903d | 2384 | |
b3308d2e KH |
2385 | Since we mustn't do this if we are just changing the case of the |
2386 | file name (we would end up deleting the file we are trying to | |
2387 | rename!), we let rename detect if the destination file already | |
2388 | exists - that way we avoid the possible pitfalls of trying to | |
2389 | determine ourselves whether two names really refer to the same | |
2390 | file, which is not always possible in the general case. (Consider | |
2391 | all the permutations of shared or subst'd drives, etc.) */ | |
2392 | ||
2393 | newname = map_w32_filename (newname, NULL); | |
eb9ea53f | 2394 | result = rename (temp, newname); |
b3308d2e KH |
2395 | |
2396 | if (result < 0 | |
cfb5e855 | 2397 | && errno == EEXIST |
b3308d2e KH |
2398 | && _chmod (newname, 0666) == 0 |
2399 | && _unlink (newname) == 0) | |
2400 | result = rename (temp, newname); | |
480b0c5b | 2401 | |
eb9ea53f | 2402 | return result; |
480b0c5b GV |
2403 | } |
2404 | ||
2405 | int | |
2406 | sys_rmdir (const char * path) | |
2407 | { | |
fbd6baed | 2408 | return _rmdir (map_w32_filename (path, NULL)); |
480b0c5b GV |
2409 | } |
2410 | ||
2411 | int | |
2412 | sys_unlink (const char * path) | |
2413 | { | |
16bb7578 GV |
2414 | path = map_w32_filename (path, NULL); |
2415 | ||
2416 | /* On Unix, unlink works without write permission. */ | |
2417 | _chmod (path, 0666); | |
2418 | return _unlink (path); | |
480b0c5b GV |
2419 | } |
2420 | ||
2421 | static FILETIME utc_base_ft; | |
2422 | static long double utc_base; | |
2423 | static int init = 0; | |
2424 | ||
2425 | static time_t | |
2426 | convert_time (FILETIME ft) | |
2427 | { | |
2428 | long double ret; | |
2429 | ||
2430 | if (!init) | |
2431 | { | |
2432 | /* Determine the delta between 1-Jan-1601 and 1-Jan-1970. */ | |
2433 | SYSTEMTIME st; | |
2434 | ||
2435 | st.wYear = 1970; | |
2436 | st.wMonth = 1; | |
2437 | st.wDay = 1; | |
2438 | st.wHour = 0; | |
2439 | st.wMinute = 0; | |
2440 | st.wSecond = 0; | |
2441 | st.wMilliseconds = 0; | |
2442 | ||
2443 | SystemTimeToFileTime (&st, &utc_base_ft); | |
2444 | utc_base = (long double) utc_base_ft.dwHighDateTime | |
69b72317 | 2445 | * 4096.0L * 1024.0L * 1024.0L + utc_base_ft.dwLowDateTime; |
480b0c5b GV |
2446 | init = 1; |
2447 | } | |
2448 | ||
2449 | if (CompareFileTime (&ft, &utc_base_ft) < 0) | |
2450 | return 0; | |
2451 | ||
69b72317 EZ |
2452 | ret = (long double) ft.dwHighDateTime |
2453 | * 4096.0L * 1024.0L * 1024.0L + ft.dwLowDateTime; | |
480b0c5b | 2454 | ret -= utc_base; |
69b72317 | 2455 | return (time_t) (ret * 1e-7L); |
480b0c5b GV |
2456 | } |
2457 | ||
480b0c5b GV |
2458 | void |
2459 | convert_from_time_t (time_t time, FILETIME * pft) | |
2460 | { | |
2461 | long double tmp; | |
2462 | ||
2463 | if (!init) | |
2464 | { | |
2465 | /* Determine the delta between 1-Jan-1601 and 1-Jan-1970. */ | |
2466 | SYSTEMTIME st; | |
2467 | ||
2468 | st.wYear = 1970; | |
2469 | st.wMonth = 1; | |
2470 | st.wDay = 1; | |
2471 | st.wHour = 0; | |
2472 | st.wMinute = 0; | |
2473 | st.wSecond = 0; | |
2474 | st.wMilliseconds = 0; | |
2475 | ||
2476 | SystemTimeToFileTime (&st, &utc_base_ft); | |
2477 | utc_base = (long double) utc_base_ft.dwHighDateTime | |
2478 | * 4096 * 1024 * 1024 + utc_base_ft.dwLowDateTime; | |
2479 | init = 1; | |
2480 | } | |
2481 | ||
2482 | /* time in 100ns units since 1-Jan-1601 */ | |
2483 | tmp = (long double) time * 1e7 + utc_base; | |
2484 | pft->dwHighDateTime = (DWORD) (tmp / (4096.0 * 1024 * 1024)); | |
16bb7578 | 2485 | pft->dwLowDateTime = (DWORD) (tmp - (4096.0 * 1024 * 1024) * pft->dwHighDateTime); |
480b0c5b | 2486 | } |
480b0c5b | 2487 | |
76b3903d GV |
2488 | #if 0 |
2489 | /* No reason to keep this; faking inode values either by hashing or even | |
2490 | using the file index from GetInformationByHandle, is not perfect and | |
2491 | so by default Emacs doesn't use the inode values on Windows. | |
2492 | Instead, we now determine file-truename correctly (except for | |
2493 | possible drive aliasing etc). */ | |
2494 | ||
2495 | /* Modified version of "PJW" algorithm (see the "Dragon" compiler book). */ | |
480b0c5b | 2496 | static unsigned |
76b3903d | 2497 | hashval (const unsigned char * str) |
480b0c5b GV |
2498 | { |
2499 | unsigned h = 0; | |
480b0c5b GV |
2500 | while (*str) |
2501 | { | |
2502 | h = (h << 4) + *str++; | |
76b3903d | 2503 | h ^= (h >> 28); |
480b0c5b GV |
2504 | } |
2505 | return h; | |
2506 | } | |
2507 | ||
2508 | /* Return the hash value of the canonical pathname, excluding the | |
2509 | drive/UNC header, to get a hopefully unique inode number. */ | |
76b3903d | 2510 | static DWORD |
480b0c5b GV |
2511 | generate_inode_val (const char * name) |
2512 | { | |
2513 | char fullname[ MAX_PATH ]; | |
2514 | char * p; | |
2515 | unsigned hash; | |
2516 | ||
76b3903d GV |
2517 | /* Get the truly canonical filename, if it exists. (Note: this |
2518 | doesn't resolve aliasing due to subst commands, or recognise hard | |
2519 | links. */ | |
2520 | if (!w32_get_long_filename ((char *)name, fullname, MAX_PATH)) | |
2521 | abort (); | |
2522 | ||
2523 | parse_root (fullname, &p); | |
fbd6baed | 2524 | /* Normal W32 filesystems are still case insensitive. */ |
480b0c5b | 2525 | _strlwr (p); |
76b3903d | 2526 | return hashval (p); |
480b0c5b GV |
2527 | } |
2528 | ||
76b3903d GV |
2529 | #endif |
2530 | ||
480b0c5b GV |
2531 | /* MSVC stat function can't cope with UNC names and has other bugs, so |
2532 | replace it with our own. This also allows us to calculate consistent | |
2533 | inode values without hacks in the main Emacs code. */ | |
2534 | int | |
2535 | stat (const char * path, struct stat * buf) | |
2536 | { | |
eb9ea53f | 2537 | char *name, *r; |
480b0c5b GV |
2538 | WIN32_FIND_DATA wfd; |
2539 | HANDLE fh; | |
e3b88685 | 2540 | unsigned __int64 fake_inode; |
480b0c5b GV |
2541 | int permission; |
2542 | int len; | |
2543 | int rootdir = FALSE; | |
2544 | ||
2545 | if (path == NULL || buf == NULL) | |
2546 | { | |
2547 | errno = EFAULT; | |
2548 | return -1; | |
2549 | } | |
2550 | ||
fbd6baed | 2551 | name = (char *) map_w32_filename (path, &path); |
22189f79 EZ |
2552 | /* Must be valid filename, no wild cards or other invalid |
2553 | characters. We use _mbspbrk to support multibyte strings that | |
2554 | might look to strpbrk as if they included literal *, ?, and other | |
2555 | characters mentioned below that are disallowed by Windows | |
2556 | filesystems. */ | |
2557 | if (_mbspbrk (name, "*?|<>\"")) | |
480b0c5b GV |
2558 | { |
2559 | errno = ENOENT; | |
2560 | return -1; | |
2561 | } | |
2562 | ||
eb9ea53f GV |
2563 | /* If name is "c:/.." or "/.." then stat "c:/" or "/". */ |
2564 | r = IS_DEVICE_SEP (name[1]) ? &name[2] : name; | |
2565 | if (IS_DIRECTORY_SEP (r[0]) && r[1] == '.' && r[2] == '.' && r[3] == '\0') | |
2566 | { | |
2567 | r[1] = r[2] = '\0'; | |
2568 | } | |
2569 | ||
480b0c5b GV |
2570 | /* Remove trailing directory separator, unless name is the root |
2571 | directory of a drive or UNC volume in which case ensure there | |
2572 | is a trailing separator. */ | |
2573 | len = strlen (name); | |
2574 | rootdir = (path >= name + len - 1 | |
2575 | && (IS_DIRECTORY_SEP (*path) || *path == 0)); | |
2576 | name = strcpy (alloca (len + 2), name); | |
2577 | ||
9d3355d1 GV |
2578 | if (is_unc_volume (name)) |
2579 | { | |
2580 | DWORD attrs = unc_volume_file_attributes (name); | |
2581 | ||
2582 | if (attrs == -1) | |
2583 | return -1; | |
2584 | ||
2585 | memset (&wfd, 0, sizeof (wfd)); | |
2586 | wfd.dwFileAttributes = attrs; | |
2587 | wfd.ftCreationTime = utc_base_ft; | |
2588 | wfd.ftLastAccessTime = utc_base_ft; | |
2589 | wfd.ftLastWriteTime = utc_base_ft; | |
2590 | strcpy (wfd.cFileName, name); | |
2591 | } | |
2592 | else if (rootdir) | |
480b0c5b GV |
2593 | { |
2594 | if (!IS_DIRECTORY_SEP (name[len-1])) | |
2595 | strcat (name, "\\"); | |
2596 | if (GetDriveType (name) < 2) | |
2597 | { | |
2598 | errno = ENOENT; | |
2599 | return -1; | |
2600 | } | |
2601 | memset (&wfd, 0, sizeof (wfd)); | |
2602 | wfd.dwFileAttributes = FILE_ATTRIBUTE_DIRECTORY; | |
2603 | wfd.ftCreationTime = utc_base_ft; | |
2604 | wfd.ftLastAccessTime = utc_base_ft; | |
2605 | wfd.ftLastWriteTime = utc_base_ft; | |
2606 | strcpy (wfd.cFileName, name); | |
2607 | } | |
2608 | else | |
2609 | { | |
2610 | if (IS_DIRECTORY_SEP (name[len-1])) | |
2611 | name[len - 1] = 0; | |
76b3903d GV |
2612 | |
2613 | /* (This is hacky, but helps when doing file completions on | |
2614 | network drives.) Optimize by using information available from | |
2615 | active readdir if possible. */ | |
b19cc00c GV |
2616 | len = strlen (dir_pathname); |
2617 | if (IS_DIRECTORY_SEP (dir_pathname[len-1])) | |
2618 | len--; | |
76b3903d | 2619 | if (dir_find_handle != INVALID_HANDLE_VALUE |
b19cc00c | 2620 | && strnicmp (name, dir_pathname, len) == 0 |
76b3903d GV |
2621 | && IS_DIRECTORY_SEP (name[len]) |
2622 | && stricmp (name + len + 1, dir_static.d_name) == 0) | |
480b0c5b | 2623 | { |
76b3903d GV |
2624 | /* This was the last entry returned by readdir. */ |
2625 | wfd = dir_find_data; | |
2626 | } | |
2627 | else | |
2628 | { | |
513feaa5 | 2629 | logon_network_drive (name); |
302d7d54 | 2630 | |
76b3903d GV |
2631 | fh = FindFirstFile (name, &wfd); |
2632 | if (fh == INVALID_HANDLE_VALUE) | |
2633 | { | |
2634 | errno = ENOENT; | |
2635 | return -1; | |
2636 | } | |
2637 | FindClose (fh); | |
480b0c5b | 2638 | } |
480b0c5b GV |
2639 | } |
2640 | ||
93e0f0da JR |
2641 | if (!NILP (Vw32_get_true_file_attributes) |
2642 | /* No access rights required to get info. */ | |
2643 | && (fh = CreateFile (name, 0, 0, NULL, OPEN_EXISTING, | |
2644 | FILE_FLAG_BACKUP_SEMANTICS, NULL)) | |
2645 | != INVALID_HANDLE_VALUE) | |
480b0c5b | 2646 | { |
480b0c5b | 2647 | /* This is more accurate in terms of gettting the correct number |
aa5ee2a3 | 2648 | of links, but is quite slow (it is noticeable when Emacs is |
480b0c5b GV |
2649 | making a list of file name completions). */ |
2650 | BY_HANDLE_FILE_INFORMATION info; | |
2651 | ||
480b0c5b GV |
2652 | if (GetFileInformationByHandle (fh, &info)) |
2653 | { | |
480b0c5b | 2654 | buf->st_nlink = info.nNumberOfLinks; |
76b3903d GV |
2655 | /* Might as well use file index to fake inode values, but this |
2656 | is not guaranteed to be unique unless we keep a handle open | |
2657 | all the time (even then there are situations where it is | |
2658 | not unique). Reputedly, there are at most 48 bits of info | |
2659 | (on NTFS, presumably less on FAT). */ | |
e3b88685 EZ |
2660 | fake_inode = info.nFileIndexHigh; |
2661 | fake_inode <<= 32; | |
2662 | fake_inode += info.nFileIndexLow; | |
480b0c5b GV |
2663 | } |
2664 | else | |
2665 | { | |
01f31dfb AI |
2666 | buf->st_nlink = 1; |
2667 | fake_inode = 0; | |
2668 | } | |
2669 | ||
93e0f0da | 2670 | if (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) |
01f31dfb | 2671 | { |
e3b88685 | 2672 | buf->st_mode = S_IFDIR; |
93e0f0da JR |
2673 | } |
2674 | else | |
2675 | { | |
2676 | switch (GetFileType (fh)) | |
2677 | { | |
2678 | case FILE_TYPE_DISK: | |
e3b88685 | 2679 | buf->st_mode = S_IFREG; |
93e0f0da JR |
2680 | break; |
2681 | case FILE_TYPE_PIPE: | |
e3b88685 | 2682 | buf->st_mode = S_IFIFO; |
93e0f0da JR |
2683 | break; |
2684 | case FILE_TYPE_CHAR: | |
2685 | case FILE_TYPE_UNKNOWN: | |
2686 | default: | |
e3b88685 | 2687 | buf->st_mode = S_IFCHR; |
93e0f0da | 2688 | } |
480b0c5b | 2689 | } |
01f31dfb | 2690 | CloseHandle (fh); |
76b3903d GV |
2691 | } |
2692 | else | |
2693 | { | |
2694 | /* Don't bother to make this information more accurate. */ | |
93e0f0da | 2695 | buf->st_mode = (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) ? |
e3b88685 | 2696 | S_IFDIR : S_IFREG; |
480b0c5b | 2697 | buf->st_nlink = 1; |
76b3903d GV |
2698 | fake_inode = 0; |
2699 | } | |
2700 | ||
2701 | #if 0 | |
2702 | /* Not sure if there is any point in this. */ | |
2703 | if (!NILP (Vw32_generate_fake_inodes)) | |
2704 | fake_inode = generate_inode_val (name); | |
2705 | else if (fake_inode == 0) | |
2706 | { | |
2707 | /* For want of something better, try to make everything unique. */ | |
2708 | static DWORD gen_num = 0; | |
2709 | fake_inode = ++gen_num; | |
480b0c5b | 2710 | } |
76b3903d GV |
2711 | #endif |
2712 | ||
2713 | /* MSVC defines _ino_t to be short; other libc's might not. */ | |
2714 | if (sizeof (buf->st_ino) == 2) | |
2715 | buf->st_ino = fake_inode ^ (fake_inode >> 16); | |
2716 | else | |
2717 | buf->st_ino = fake_inode; | |
480b0c5b GV |
2718 | |
2719 | /* consider files to belong to current user */ | |
2720 | buf->st_uid = the_passwd.pw_uid; | |
2721 | buf->st_gid = the_passwd.pw_gid; | |
2722 | ||
fbd6baed | 2723 | /* volume_info is set indirectly by map_w32_filename */ |
480b0c5b GV |
2724 | buf->st_dev = volume_info.serialnum; |
2725 | buf->st_rdev = volume_info.serialnum; | |
2726 | ||
480b0c5b GV |
2727 | |
2728 | buf->st_size = wfd.nFileSizeLow; | |
2729 | ||
2730 | /* Convert timestamps to Unix format. */ | |
2731 | buf->st_mtime = convert_time (wfd.ftLastWriteTime); | |
2732 | buf->st_atime = convert_time (wfd.ftLastAccessTime); | |
2733 | if (buf->st_atime == 0) buf->st_atime = buf->st_mtime; | |
2734 | buf->st_ctime = convert_time (wfd.ftCreationTime); | |
2735 | if (buf->st_ctime == 0) buf->st_ctime = buf->st_mtime; | |
2736 | ||
2737 | /* determine rwx permissions */ | |
2738 | if (wfd.dwFileAttributes & FILE_ATTRIBUTE_READONLY) | |
e3b88685 | 2739 | permission = S_IREAD; |
480b0c5b | 2740 | else |
e3b88685 | 2741 | permission = S_IREAD | S_IWRITE; |
177c0ea7 | 2742 | |
480b0c5b | 2743 | if (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) |
e3b88685 | 2744 | permission |= S_IEXEC; |
b3308d2e | 2745 | else if (is_exec (name)) |
e3b88685 | 2746 | permission |= S_IEXEC; |
480b0c5b GV |
2747 | |
2748 | buf->st_mode |= permission | (permission >> 3) | (permission >> 6); | |
2749 | ||
2750 | return 0; | |
2751 | } | |
2752 | ||
16bb7578 GV |
2753 | /* Provide fstat and utime as well as stat for consistent handling of |
2754 | file timestamps. */ | |
2755 | int | |
2756 | fstat (int desc, struct stat * buf) | |
2757 | { | |
2758 | HANDLE fh = (HANDLE) _get_osfhandle (desc); | |
2759 | BY_HANDLE_FILE_INFORMATION info; | |
e3b88685 | 2760 | unsigned __int64 fake_inode; |
16bb7578 GV |
2761 | int permission; |
2762 | ||
2763 | switch (GetFileType (fh) & ~FILE_TYPE_REMOTE) | |
2764 | { | |
2765 | case FILE_TYPE_DISK: | |
e3b88685 | 2766 | buf->st_mode = S_IFREG; |
16bb7578 GV |
2767 | if (!GetFileInformationByHandle (fh, &info)) |
2768 | { | |
2769 | errno = EACCES; | |
2770 | return -1; | |
2771 | } | |
2772 | break; | |
2773 | case FILE_TYPE_PIPE: | |
e3b88685 | 2774 | buf->st_mode = S_IFIFO; |
16bb7578 GV |
2775 | goto non_disk; |
2776 | case FILE_TYPE_CHAR: | |
2777 | case FILE_TYPE_UNKNOWN: | |
2778 | default: | |
e3b88685 | 2779 | buf->st_mode = S_IFCHR; |
16bb7578 GV |
2780 | non_disk: |
2781 | memset (&info, 0, sizeof (info)); | |
2782 | info.dwFileAttributes = 0; | |
2783 | info.ftCreationTime = utc_base_ft; | |
2784 | info.ftLastAccessTime = utc_base_ft; | |
2785 | info.ftLastWriteTime = utc_base_ft; | |
2786 | } | |
2787 | ||
2788 | if (info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) | |
e3b88685 | 2789 | buf->st_mode = S_IFDIR; |
93e0f0da JR |
2790 | |
2791 | buf->st_nlink = info.nNumberOfLinks; | |
2792 | /* Might as well use file index to fake inode values, but this | |
2793 | is not guaranteed to be unique unless we keep a handle open | |
2794 | all the time (even then there are situations where it is | |
2795 | not unique). Reputedly, there are at most 48 bits of info | |
2796 | (on NTFS, presumably less on FAT). */ | |
e3b88685 EZ |
2797 | fake_inode = info.nFileIndexHigh; |
2798 | fake_inode <<= 32; | |
2799 | fake_inode += info.nFileIndexLow; | |
16bb7578 GV |
2800 | |
2801 | /* MSVC defines _ino_t to be short; other libc's might not. */ | |
2802 | if (sizeof (buf->st_ino) == 2) | |
2803 | buf->st_ino = fake_inode ^ (fake_inode >> 16); | |
2804 | else | |
2805 | buf->st_ino = fake_inode; | |
2806 | ||
2807 | /* consider files to belong to current user */ | |
248c21c5 EZ |
2808 | buf->st_uid = the_passwd.pw_uid; |
2809 | buf->st_gid = the_passwd.pw_gid; | |
16bb7578 GV |
2810 | |
2811 | buf->st_dev = info.dwVolumeSerialNumber; | |
2812 | buf->st_rdev = info.dwVolumeSerialNumber; | |
2813 | ||
2814 | buf->st_size = info.nFileSizeLow; | |
2815 | ||
2816 | /* Convert timestamps to Unix format. */ | |
2817 | buf->st_mtime = convert_time (info.ftLastWriteTime); | |
2818 | buf->st_atime = convert_time (info.ftLastAccessTime); | |
2819 | if (buf->st_atime == 0) buf->st_atime = buf->st_mtime; | |
2820 | buf->st_ctime = convert_time (info.ftCreationTime); | |
2821 | if (buf->st_ctime == 0) buf->st_ctime = buf->st_mtime; | |
2822 | ||
2823 | /* determine rwx permissions */ | |
2824 | if (info.dwFileAttributes & FILE_ATTRIBUTE_READONLY) | |
e3b88685 | 2825 | permission = S_IREAD; |
16bb7578 | 2826 | else |
e3b88685 | 2827 | permission = S_IREAD | S_IWRITE; |
177c0ea7 | 2828 | |
16bb7578 | 2829 | if (info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) |
e3b88685 | 2830 | permission |= S_IEXEC; |
16bb7578 GV |
2831 | else |
2832 | { | |
2833 | #if 0 /* no way of knowing the filename */ | |
2834 | char * p = strrchr (name, '.'); | |
2835 | if (p != NULL && | |
2836 | (stricmp (p, ".exe") == 0 || | |
2837 | stricmp (p, ".com") == 0 || | |
2838 | stricmp (p, ".bat") == 0 || | |
2839 | stricmp (p, ".cmd") == 0)) | |
e3b88685 | 2840 | permission |= S_IEXEC; |
16bb7578 GV |
2841 | #endif |
2842 | } | |
2843 | ||
2844 | buf->st_mode |= permission | (permission >> 3) | (permission >> 6); | |
2845 | ||
2846 | return 0; | |
2847 | } | |
2848 | ||
2849 | int | |
2850 | utime (const char *name, struct utimbuf *times) | |
2851 | { | |
2852 | struct utimbuf deftime; | |
2853 | HANDLE fh; | |
2854 | FILETIME mtime; | |
2855 | FILETIME atime; | |
2856 | ||
2857 | if (times == NULL) | |
2858 | { | |
2859 | deftime.modtime = deftime.actime = time (NULL); | |
2860 | times = &deftime; | |
2861 | } | |
2862 | ||
2863 | /* Need write access to set times. */ | |
2864 | fh = CreateFile (name, GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, | |
2865 | 0, OPEN_EXISTING, 0, NULL); | |
2866 | if (fh) | |
2867 | { | |
2868 | convert_from_time_t (times->actime, &atime); | |
2869 | convert_from_time_t (times->modtime, &mtime); | |
2870 | if (!SetFileTime (fh, NULL, &atime, &mtime)) | |
2871 | { | |
2872 | CloseHandle (fh); | |
2873 | errno = EACCES; | |
2874 | return -1; | |
2875 | } | |
2876 | CloseHandle (fh); | |
2877 | } | |
2878 | else | |
2879 | { | |
2880 | errno = EINVAL; | |
2881 | return -1; | |
2882 | } | |
2883 | return 0; | |
2884 | } | |
2885 | ||
480b0c5b GV |
2886 | #ifdef HAVE_SOCKETS |
2887 | ||
2888 | /* Wrappers for winsock functions to map between our file descriptors | |
2889 | and winsock's handles; also set h_errno for convenience. | |
2890 | ||
2891 | To allow Emacs to run on systems which don't have winsock support | |
2892 | installed, we dynamically link to winsock on startup if present, and | |
2893 | otherwise provide the minimum necessary functionality | |
2894 | (eg. gethostname). */ | |
2895 | ||
2896 | /* function pointers for relevant socket functions */ | |
2897 | int (PASCAL *pfn_WSAStartup) (WORD wVersionRequired, LPWSADATA lpWSAData); | |
2898 | void (PASCAL *pfn_WSASetLastError) (int iError); | |
2899 | int (PASCAL *pfn_WSAGetLastError) (void); | |
26fb7bc4 | 2900 | int (PASCAL *pfn_WSAEventSelect) (SOCKET s, HANDLE hEventObject, long lNetworkEvents); |
64570b36 KS |
2901 | HANDLE (PASCAL *pfn_WSACreateEvent) (void); |
2902 | int (PASCAL *pfn_WSACloseEvent) (HANDLE hEvent); | |
480b0c5b GV |
2903 | int (PASCAL *pfn_socket) (int af, int type, int protocol); |
2904 | int (PASCAL *pfn_bind) (SOCKET s, const struct sockaddr *addr, int namelen); | |
2905 | int (PASCAL *pfn_connect) (SOCKET s, const struct sockaddr *addr, int namelen); | |
2906 | int (PASCAL *pfn_ioctlsocket) (SOCKET s, long cmd, u_long *argp); | |
2907 | int (PASCAL *pfn_recv) (SOCKET s, char * buf, int len, int flags); | |
2908 | int (PASCAL *pfn_send) (SOCKET s, const char * buf, int len, int flags); | |
2909 | int (PASCAL *pfn_closesocket) (SOCKET s); | |
2910 | int (PASCAL *pfn_shutdown) (SOCKET s, int how); | |
2911 | int (PASCAL *pfn_WSACleanup) (void); | |
2912 | ||
2913 | u_short (PASCAL *pfn_htons) (u_short hostshort); | |
2914 | u_short (PASCAL *pfn_ntohs) (u_short netshort); | |
2915 | unsigned long (PASCAL *pfn_inet_addr) (const char * cp); | |
2916 | int (PASCAL *pfn_gethostname) (char * name, int namelen); | |
2917 | struct hostent * (PASCAL *pfn_gethostbyname) (const char * name); | |
2918 | struct servent * (PASCAL *pfn_getservbyname) (const char * name, const char * proto); | |
ecd270eb | 2919 | int (PASCAL *pfn_getpeername) (SOCKET s, struct sockaddr *addr, int * namelen); |
962955c5 JR |
2920 | int (PASCAL *pfn_setsockopt) (SOCKET s, int level, int optname, |
2921 | const char * optval, int optlen); | |
2922 | int (PASCAL *pfn_listen) (SOCKET s, int backlog); | |
2923 | int (PASCAL *pfn_getsockname) (SOCKET s, struct sockaddr * name, | |
2924 | int * namelen); | |
2925 | SOCKET (PASCAL *pfn_accept) (SOCKET s, struct sockaddr * addr, int * addrlen); | |
2926 | int (PASCAL *pfn_recvfrom) (SOCKET s, char * buf, int len, int flags, | |
2927 | struct sockaddr * from, int * fromlen); | |
2928 | int (PASCAL *pfn_sendto) (SOCKET s, const char * buf, int len, int flags, | |
2929 | const struct sockaddr * to, int tolen); | |
2930 | ||
f1614061 RS |
2931 | /* SetHandleInformation is only needed to make sockets non-inheritable. */ |
2932 | BOOL (WINAPI *pfn_SetHandleInformation) (HANDLE object, DWORD mask, DWORD flags); | |
2933 | #ifndef HANDLE_FLAG_INHERIT | |
2934 | #define HANDLE_FLAG_INHERIT 1 | |
2935 | #endif | |
480b0c5b | 2936 | |
f249a012 RS |
2937 | HANDLE winsock_lib; |
2938 | static int winsock_inuse; | |
480b0c5b | 2939 | |
f249a012 | 2940 | BOOL |
480b0c5b GV |
2941 | term_winsock (void) |
2942 | { | |
f249a012 | 2943 | if (winsock_lib != NULL && winsock_inuse == 0) |
480b0c5b | 2944 | { |
f249a012 RS |
2945 | /* Not sure what would cause WSAENETDOWN, or even if it can happen |
2946 | after WSAStartup returns successfully, but it seems reasonable | |
2947 | to allow unloading winsock anyway in that case. */ | |
2948 | if (pfn_WSACleanup () == 0 || | |
2949 | pfn_WSAGetLastError () == WSAENETDOWN) | |
2950 | { | |
2951 | if (FreeLibrary (winsock_lib)) | |
2952 | winsock_lib = NULL; | |
2953 | return TRUE; | |
2954 | } | |
480b0c5b | 2955 | } |
f249a012 | 2956 | return FALSE; |
480b0c5b GV |
2957 | } |
2958 | ||
f249a012 RS |
2959 | BOOL |
2960 | init_winsock (int load_now) | |
480b0c5b GV |
2961 | { |
2962 | WSADATA winsockData; | |
2963 | ||
f249a012 RS |
2964 | if (winsock_lib != NULL) |
2965 | return TRUE; | |
f1614061 RS |
2966 | |
2967 | pfn_SetHandleInformation = NULL; | |
2968 | pfn_SetHandleInformation | |
2969 | = (void *) GetProcAddress (GetModuleHandle ("kernel32.dll"), | |
2970 | "SetHandleInformation"); | |
2971 | ||
64570b36 | 2972 | winsock_lib = LoadLibrary ("Ws2_32.dll"); |
480b0c5b GV |
2973 | |
2974 | if (winsock_lib != NULL) | |
2975 | { | |
2976 | /* dynamically link to socket functions */ | |
2977 | ||
2978 | #define LOAD_PROC(fn) \ | |
2979 | if ((pfn_##fn = (void *) GetProcAddress (winsock_lib, #fn)) == NULL) \ | |
2980 | goto fail; | |
2981 | ||
2982 | LOAD_PROC( WSAStartup ); | |
2983 | LOAD_PROC( WSASetLastError ); | |
2984 | LOAD_PROC( WSAGetLastError ); | |
26fb7bc4 | 2985 | LOAD_PROC( WSAEventSelect ); |
64570b36 KS |
2986 | LOAD_PROC( WSACreateEvent ); |
2987 | LOAD_PROC( WSACloseEvent ); | |
480b0c5b GV |
2988 | LOAD_PROC( socket ); |
2989 | LOAD_PROC( bind ); | |
2990 | LOAD_PROC( connect ); | |
2991 | LOAD_PROC( ioctlsocket ); | |
2992 | LOAD_PROC( recv ); | |
2993 | LOAD_PROC( send ); | |
2994 | LOAD_PROC( closesocket ); | |
2995 | LOAD_PROC( shutdown ); | |
2996 | LOAD_PROC( htons ); | |
2997 | LOAD_PROC( ntohs ); | |
2998 | LOAD_PROC( inet_addr ); | |
2999 | LOAD_PROC( gethostname ); | |
3000 | LOAD_PROC( gethostbyname ); | |
3001 | LOAD_PROC( getservbyname ); | |
ecd270eb | 3002 | LOAD_PROC( getpeername ); |
480b0c5b | 3003 | LOAD_PROC( WSACleanup ); |
962955c5 JR |
3004 | LOAD_PROC( setsockopt ); |
3005 | LOAD_PROC( listen ); | |
3006 | LOAD_PROC( getsockname ); | |
3007 | LOAD_PROC( accept ); | |
3008 | LOAD_PROC( recvfrom ); | |
3009 | LOAD_PROC( sendto ); | |
f249a012 RS |
3010 | #undef LOAD_PROC |
3011 | ||
480b0c5b GV |
3012 | /* specify version 1.1 of winsock */ |
3013 | if (pfn_WSAStartup (0x101, &winsockData) == 0) | |
3014 | { | |
f249a012 RS |
3015 | if (winsockData.wVersion != 0x101) |
3016 | goto fail; | |
3017 | ||
3018 | if (!load_now) | |
3019 | { | |
3020 | /* Report that winsock exists and is usable, but leave | |
3021 | socket functions disabled. I am assuming that calling | |
3022 | WSAStartup does not require any network interaction, | |
3023 | and in particular does not cause or require a dial-up | |
3024 | connection to be established. */ | |
3025 | ||
3026 | pfn_WSACleanup (); | |
3027 | FreeLibrary (winsock_lib); | |
3028 | winsock_lib = NULL; | |
3029 | } | |
3030 | winsock_inuse = 0; | |
3031 | return TRUE; | |
480b0c5b GV |
3032 | } |
3033 | ||
3034 | fail: | |
3035 | FreeLibrary (winsock_lib); | |
f249a012 | 3036 | winsock_lib = NULL; |
480b0c5b | 3037 | } |
f249a012 RS |
3038 | |
3039 | return FALSE; | |
480b0c5b GV |
3040 | } |
3041 | ||
3042 | ||
3043 | int h_errno = 0; | |
3044 | ||
3045 | /* function to set h_errno for compatability; map winsock error codes to | |
3046 | normal system codes where they overlap (non-overlapping definitions | |
3047 | are already in <sys/socket.h> */ | |
9bfb11f9 KS |
3048 | static void |
3049 | set_errno () | |
480b0c5b | 3050 | { |
f249a012 | 3051 | if (winsock_lib == NULL) |
480b0c5b GV |
3052 | h_errno = EINVAL; |
3053 | else | |
3054 | h_errno = pfn_WSAGetLastError (); | |
3055 | ||
3056 | switch (h_errno) | |
3057 | { | |
3058 | case WSAEACCES: h_errno = EACCES; break; | |
3059 | case WSAEBADF: h_errno = EBADF; break; | |
3060 | case WSAEFAULT: h_errno = EFAULT; break; | |
3061 | case WSAEINTR: h_errno = EINTR; break; | |
3062 | case WSAEINVAL: h_errno = EINVAL; break; | |
3063 | case WSAEMFILE: h_errno = EMFILE; break; | |
3064 | case WSAENAMETOOLONG: h_errno = ENAMETOOLONG; break; | |
3065 | case WSAENOTEMPTY: h_errno = ENOTEMPTY; break; | |
3066 | } | |
3067 | errno = h_errno; | |
3068 | } | |
3069 | ||
9bfb11f9 KS |
3070 | static void |
3071 | check_errno () | |
480b0c5b | 3072 | { |
f249a012 | 3073 | if (h_errno == 0 && winsock_lib != NULL) |
480b0c5b GV |
3074 | pfn_WSASetLastError (0); |
3075 | } | |
3076 | ||
d8fcc1b9 AI |
3077 | /* Extend strerror to handle the winsock-specific error codes. */ |
3078 | struct { | |
3079 | int errnum; | |
3080 | char * msg; | |
3081 | } _wsa_errlist[] = { | |
3082 | WSAEINTR , "Interrupted function call", | |
3083 | WSAEBADF , "Bad file descriptor", | |
3084 | WSAEACCES , "Permission denied", | |
3085 | WSAEFAULT , "Bad address", | |
3086 | WSAEINVAL , "Invalid argument", | |
3087 | WSAEMFILE , "Too many open files", | |
177c0ea7 | 3088 | |
d8fcc1b9 AI |
3089 | WSAEWOULDBLOCK , "Resource temporarily unavailable", |
3090 | WSAEINPROGRESS , "Operation now in progress", | |
3091 | WSAEALREADY , "Operation already in progress", | |
3092 | WSAENOTSOCK , "Socket operation on non-socket", | |
3093 | WSAEDESTADDRREQ , "Destination address required", | |
3094 | WSAEMSGSIZE , "Message too long", | |
3095 | WSAEPROTOTYPE , "Protocol wrong type for socket", | |
3096 | WSAENOPROTOOPT , "Bad protocol option", | |
3097 | WSAEPROTONOSUPPORT , "Protocol not supported", | |
3098 | WSAESOCKTNOSUPPORT , "Socket type not supported", | |
3099 | WSAEOPNOTSUPP , "Operation not supported", | |
3100 | WSAEPFNOSUPPORT , "Protocol family not supported", | |
3101 | WSAEAFNOSUPPORT , "Address family not supported by protocol family", | |
3102 | WSAEADDRINUSE , "Address already in use", | |
3103 | WSAEADDRNOTAVAIL , "Cannot assign requested address", | |
3104 | WSAENETDOWN , "Network is down", | |
3105 | WSAENETUNREACH , "Network is unreachable", | |
3106 | WSAENETRESET , "Network dropped connection on reset", | |
3107 | WSAECONNABORTED , "Software caused connection abort", | |
3108 | WSAECONNRESET , "Connection reset by peer", | |
3109 | WSAENOBUFS , "No buffer space available", | |
3110 | WSAEISCONN , "Socket is already connected", | |
3111 | WSAENOTCONN , "Socket is not connected", | |
3112 | WSAESHUTDOWN , "Cannot send after socket shutdown", | |
3113 | WSAETOOMANYREFS , "Too many references", /* not sure */ | |
3114 | WSAETIMEDOUT , "Connection timed out", | |
3115 | WSAECONNREFUSED , "Connection refused", | |
3116 | WSAELOOP , "Network loop", /* not sure */ | |
3117 | WSAENAMETOOLONG , "Name is too long", | |
3118 | WSAEHOSTDOWN , "Host is down", | |
3119 | WSAEHOSTUNREACH , "No route to host", | |
3120 | WSAENOTEMPTY , "Buffer not empty", /* not sure */ | |
3121 | WSAEPROCLIM , "Too many processes", | |
3122 | WSAEUSERS , "Too many users", /* not sure */ | |
3123 | WSAEDQUOT , "Double quote in host name", /* really not sure */ | |
3124 | WSAESTALE , "Data is stale", /* not sure */ | |
3125 | WSAEREMOTE , "Remote error", /* not sure */ | |
177c0ea7 | 3126 | |
d8fcc1b9 AI |
3127 | WSASYSNOTREADY , "Network subsystem is unavailable", |
3128 | WSAVERNOTSUPPORTED , "WINSOCK.DLL version out of range", | |
3129 | WSANOTINITIALISED , "Winsock not initialized successfully", | |
3130 | WSAEDISCON , "Graceful shutdown in progress", | |
3131 | #ifdef WSAENOMORE | |
3132 | WSAENOMORE , "No more operations allowed", /* not sure */ | |
3133 | WSAECANCELLED , "Operation cancelled", /* not sure */ | |
3134 | WSAEINVALIDPROCTABLE , "Invalid procedure table from service provider", | |
3135 | WSAEINVALIDPROVIDER , "Invalid service provider version number", | |
3136 | WSAEPROVIDERFAILEDINIT , "Unable to initialize a service provider", | |
aa5ee2a3 | 3137 | WSASYSCALLFAILURE , "System call failure", |
d8fcc1b9 AI |
3138 | WSASERVICE_NOT_FOUND , "Service not found", /* not sure */ |
3139 | WSATYPE_NOT_FOUND , "Class type not found", | |
3140 | WSA_E_NO_MORE , "No more resources available", /* really not sure */ | |
3141 | WSA_E_CANCELLED , "Operation already cancelled", /* really not sure */ | |
3142 | WSAEREFUSED , "Operation refused", /* not sure */ | |
3143 | #endif | |
177c0ea7 | 3144 | |
d8fcc1b9 AI |
3145 | WSAHOST_NOT_FOUND , "Host not found", |
3146 | WSATRY_AGAIN , "Authoritative host not found during name lookup", | |
3147 | WSANO_RECOVERY , "Non-recoverable error during name lookup", | |
3148 | WSANO_DATA , "Valid name, no data record of requested type", | |
3149 | ||
3150 | -1, NULL | |
3151 | }; | |
3152 | ||
3153 | char * | |
3154 | sys_strerror(int error_no) | |
3155 | { | |
3156 | int i; | |
3157 | static char unknown_msg[40]; | |
3158 | ||
a302c7ae AI |
3159 | if (error_no >= 0 && error_no < sys_nerr) |
3160 | return sys_errlist[error_no]; | |
d8fcc1b9 AI |
3161 | |
3162 | for (i = 0; _wsa_errlist[i].errnum >= 0; i++) | |
3163 | if (_wsa_errlist[i].errnum == error_no) | |
3164 | return _wsa_errlist[i].msg; | |
3165 | ||
3166 | sprintf(unknown_msg, "Unidentified error: %d", error_no); | |
3167 | return unknown_msg; | |
3168 | } | |
3169 | ||
480b0c5b GV |
3170 | /* [andrewi 3-May-96] I've had conflicting results using both methods, |
3171 | but I believe the method of keeping the socket handle separate (and | |
3172 | insuring it is not inheritable) is the correct one. */ | |
3173 | ||
3174 | //#define SOCK_REPLACE_HANDLE | |
3175 | ||
3176 | #ifdef SOCK_REPLACE_HANDLE | |
3177 | #define SOCK_HANDLE(fd) ((SOCKET) _get_osfhandle (fd)) | |
3178 | #else | |
3179 | #define SOCK_HANDLE(fd) ((SOCKET) fd_info[fd].hnd) | |
3180 | #endif | |
3181 | ||
962955c5 JR |
3182 | int socket_to_fd (SOCKET s); |
3183 | ||
480b0c5b GV |
3184 | int |
3185 | sys_socket(int af, int type, int protocol) | |
3186 | { | |
962955c5 | 3187 | SOCKET s; |
480b0c5b | 3188 | |
f249a012 | 3189 | if (winsock_lib == NULL) |
480b0c5b GV |
3190 | { |
3191 | h_errno = ENETDOWN; | |
3192 | return INVALID_SOCKET; | |
3193 | } | |
3194 | ||
3195 | check_errno (); | |
3196 | ||
3197 | /* call the real socket function */ | |
962955c5 | 3198 | s = pfn_socket (af, type, protocol); |
177c0ea7 | 3199 | |
480b0c5b | 3200 | if (s != INVALID_SOCKET) |
962955c5 | 3201 | return socket_to_fd (s); |
480b0c5b | 3202 | |
962955c5 JR |
3203 | set_errno (); |
3204 | return -1; | |
3205 | } | |
3206 | ||
3207 | /* Convert a SOCKET to a file descriptor. */ | |
3208 | int | |
3209 | socket_to_fd (SOCKET s) | |
3210 | { | |
3211 | int fd; | |
3212 | child_process * cp; | |
3213 | ||
3214 | /* Although under NT 3.5 _open_osfhandle will accept a socket | |
3215 | handle, if opened with SO_OPENTYPE == SO_SYNCHRONOUS_NONALERT, | |
3216 | that does not work under NT 3.1. However, we can get the same | |
3217 | effect by using a backdoor function to replace an existing | |
3218 | descriptor handle with the one we want. */ | |
3219 | ||
3220 | /* allocate a file descriptor (with appropriate flags) */ | |
3221 | fd = _open ("NUL:", _O_RDWR); | |
3222 | if (fd >= 0) | |
3223 | { | |
480b0c5b | 3224 | #ifdef SOCK_REPLACE_HANDLE |
962955c5 JR |
3225 | /* now replace handle to NUL with our socket handle */ |
3226 | CloseHandle ((HANDLE) _get_osfhandle (fd)); | |
3227 | _free_osfhnd (fd); | |
3228 | _set_osfhnd (fd, s); | |
3229 | /* setmode (fd, _O_BINARY); */ | |
480b0c5b | 3230 | #else |
962955c5 JR |
3231 | /* Make a non-inheritable copy of the socket handle. Note |
3232 | that it is possible that sockets aren't actually kernel | |
3233 | handles, which appears to be the case on Windows 9x when | |
3234 | the MS Proxy winsock client is installed. */ | |
3235 | { | |
3236 | /* Apparently there is a bug in NT 3.51 with some service | |
3237 | packs, which prevents using DuplicateHandle to make a | |
3238 | socket handle non-inheritable (causes WSACleanup to | |
3239 | hang). The work-around is to use SetHandleInformation | |
3240 | instead if it is available and implemented. */ | |
3241 | if (pfn_SetHandleInformation) | |
480b0c5b | 3242 | { |
962955c5 JR |
3243 | pfn_SetHandleInformation ((HANDLE) s, HANDLE_FLAG_INHERIT, 0); |
3244 | } | |
3245 | else | |
3246 | { | |
3247 | HANDLE parent = GetCurrentProcess (); | |
3248 | HANDLE new_s = INVALID_HANDLE_VALUE; | |
3249 | ||
3250 | if (DuplicateHandle (parent, | |
3251 | (HANDLE) s, | |
3252 | parent, | |
3253 | &new_s, | |
3254 | 0, | |
3255 | FALSE, | |
3256 | DUPLICATE_SAME_ACCESS)) | |
f1614061 | 3257 | { |
962955c5 JR |
3258 | /* It is possible that DuplicateHandle succeeds even |
3259 | though the socket wasn't really a kernel handle, | |
3260 | because a real handle has the same value. So | |
3261 | test whether the new handle really is a socket. */ | |
3262 | long nonblocking = 0; | |
3263 | if (pfn_ioctlsocket ((SOCKET) new_s, FIONBIO, &nonblocking) == 0) | |
ca149beb | 3264 | { |
962955c5 JR |
3265 | pfn_closesocket (s); |
3266 | s = (SOCKET) new_s; | |
3267 | } | |
3268 | else | |
3269 | { | |
3270 | CloseHandle (new_s); | |
3271 | } | |
177c0ea7 | 3272 | } |
480b0c5b | 3273 | } |
962955c5 JR |
3274 | } |
3275 | fd_info[fd].hnd = (HANDLE) s; | |
480b0c5b GV |
3276 | #endif |
3277 | ||
962955c5 JR |
3278 | /* set our own internal flags */ |
3279 | fd_info[fd].flags = FILE_SOCKET | FILE_BINARY | FILE_READ | FILE_WRITE; | |
480b0c5b | 3280 | |
962955c5 JR |
3281 | cp = new_child (); |
3282 | if (cp) | |
3283 | { | |
3284 | cp->fd = fd; | |
3285 | cp->status = STATUS_READ_ACKNOWLEDGED; | |
480b0c5b | 3286 | |
962955c5 JR |
3287 | /* attach child_process to fd_info */ |
3288 | if (fd_info[ fd ].cp != NULL) | |
3289 | { | |
3290 | DebPrint (("sys_socket: fd_info[%d] apparently in use!\n", fd)); | |
3291 | abort (); | |
480b0c5b GV |
3292 | } |
3293 | ||
962955c5 JR |
3294 | fd_info[ fd ].cp = cp; |
3295 | ||
3296 | /* success! */ | |
3297 | winsock_inuse++; /* count open sockets */ | |
3298 | return fd; | |
480b0c5b | 3299 | } |
480b0c5b | 3300 | |
962955c5 JR |
3301 | /* clean up */ |
3302 | _close (fd); | |
3303 | } | |
3304 | pfn_closesocket (s); | |
3305 | h_errno = EMFILE; | |
480b0c5b GV |
3306 | return -1; |
3307 | } | |
3308 | ||
3309 | ||
3310 | int | |
3311 | sys_bind (int s, const struct sockaddr * addr, int namelen) | |
3312 | { | |
f249a012 | 3313 | if (winsock_lib == NULL) |
480b0c5b GV |
3314 | { |
3315 | h_errno = ENOTSOCK; | |
3316 | return SOCKET_ERROR; | |
3317 | } | |
3318 | ||
3319 | check_errno (); | |
3320 | if (fd_info[s].flags & FILE_SOCKET) | |
3321 | { | |
3322 | int rc = pfn_bind (SOCK_HANDLE (s), addr, namelen); | |
3323 | if (rc == SOCKET_ERROR) | |
3324 | set_errno (); | |
3325 | return rc; | |
3326 | } | |
3327 | h_errno = ENOTSOCK; | |
3328 | return SOCKET_ERROR; | |
3329 | } | |
3330 | ||
3331 | ||
3332 | int | |
3333 | sys_connect (int s, const struct sockaddr * name, int namelen) | |
3334 | { | |
f249a012 | 3335 | if (winsock_lib == NULL) |
480b0c5b GV |
3336 | { |
3337 | h_errno = ENOTSOCK; | |
3338 | return SOCKET_ERROR; | |
3339 | } | |
3340 | ||
3341 | check_errno (); | |
3342 | if (fd_info[s].flags & FILE_SOCKET) | |
3343 | { | |
3344 | int rc = pfn_connect (SOCK_HANDLE (s), name, namelen); | |
3345 | if (rc == SOCKET_ERROR) | |
3346 | set_errno (); | |
3347 | return rc; | |
3348 | } | |
3349 | h_errno = ENOTSOCK; | |
3350 | return SOCKET_ERROR; | |
3351 | } | |
3352 | ||
3353 | u_short | |
3354 | sys_htons (u_short hostshort) | |
3355 | { | |
f249a012 | 3356 | return (winsock_lib != NULL) ? |
480b0c5b GV |
3357 | pfn_htons (hostshort) : hostshort; |
3358 | } | |
3359 | ||
3360 | u_short | |
3361 | sys_ntohs (u_short netshort) | |
3362 | { | |
f249a012 | 3363 | return (winsock_lib != NULL) ? |
480b0c5b GV |
3364 | pfn_ntohs (netshort) : netshort; |
3365 | } | |
3366 | ||
3367 | unsigned long | |
3368 | sys_inet_addr (const char * cp) | |
3369 | { | |
f249a012 | 3370 | return (winsock_lib != NULL) ? |
480b0c5b GV |
3371 | pfn_inet_addr (cp) : INADDR_NONE; |
3372 | } | |
3373 | ||
3374 | int | |
3375 | sys_gethostname (char * name, int namelen) | |
3376 | { | |
f249a012 | 3377 | if (winsock_lib != NULL) |
480b0c5b GV |
3378 | return pfn_gethostname (name, namelen); |
3379 | ||
3380 | if (namelen > MAX_COMPUTERNAME_LENGTH) | |
a302c7ae | 3381 | return !GetComputerName (name, (DWORD *)&namelen); |
480b0c5b GV |
3382 | |
3383 | h_errno = EFAULT; | |
3384 | return SOCKET_ERROR; | |
3385 | } | |
3386 | ||
3387 | struct hostent * | |
3388 | sys_gethostbyname(const char * name) | |
3389 | { | |
3390 | struct hostent * host; | |
3391 | ||
f249a012 | 3392 | if (winsock_lib == NULL) |
480b0c5b GV |
3393 | { |
3394 | h_errno = ENETDOWN; | |
3395 | return NULL; | |
3396 | } | |
3397 | ||
3398 | check_errno (); | |
3399 | host = pfn_gethostbyname (name); | |
3400 | if (!host) | |
3401 | set_errno (); | |
3402 | return host; | |
3403 | } | |
3404 | ||
3405 | struct servent * | |
3406 | sys_getservbyname(const char * name, const char * proto) | |
3407 | { | |
3408 | struct servent * serv; | |
3409 | ||
f249a012 | 3410 | if (winsock_lib == NULL) |
480b0c5b GV |
3411 | { |
3412 | h_errno = ENETDOWN; | |
3413 | return NULL; | |
3414 | } | |
3415 | ||
3416 | check_errno (); | |
3417 | serv = pfn_getservbyname (name, proto); | |
3418 | if (!serv) | |
3419 | set_errno (); | |
3420 | return serv; | |
3421 | } | |
3422 | ||
ecd270eb JR |
3423 | int |
3424 | sys_getpeername (int s, struct sockaddr *addr, int * namelen) | |
3425 | { | |
3426 | if (winsock_lib == NULL) | |
3427 | { | |
3428 | h_errno = ENETDOWN; | |
3429 | return SOCKET_ERROR; | |
3430 | } | |
3431 | ||
3432 | check_errno (); | |
3433 | if (fd_info[s].flags & FILE_SOCKET) | |
3434 | { | |
3435 | int rc = pfn_getpeername (SOCK_HANDLE (s), addr, namelen); | |
3436 | if (rc == SOCKET_ERROR) | |
3437 | set_errno (); | |
3438 | return rc; | |
3439 | } | |
3440 | h_errno = ENOTSOCK; | |
3441 | return SOCKET_ERROR; | |
3442 | } | |
3443 | ||
3444 | ||
380961a6 GV |
3445 | int |
3446 | sys_shutdown (int s, int how) | |
3447 | { | |
380961a6 GV |
3448 | if (winsock_lib == NULL) |
3449 | { | |
3450 | h_errno = ENETDOWN; | |
3451 | return SOCKET_ERROR; | |
3452 | } | |
3453 | ||
3454 | check_errno (); | |
3455 | if (fd_info[s].flags & FILE_SOCKET) | |
3456 | { | |
3457 | int rc = pfn_shutdown (SOCK_HANDLE (s), how); | |
962955c5 JR |
3458 | if (rc == SOCKET_ERROR) |
3459 | set_errno (); | |
3460 | return rc; | |
3461 | } | |
3462 | h_errno = ENOTSOCK; | |
3463 | return SOCKET_ERROR; | |
3464 | } | |
3465 | ||
3466 | int | |
a5a389bb | 3467 | sys_setsockopt (int s, int level, int optname, const void * optval, int optlen) |
962955c5 JR |
3468 | { |
3469 | if (winsock_lib == NULL) | |
3470 | { | |
3471 | h_errno = ENETDOWN; | |
3472 | return SOCKET_ERROR; | |
3473 | } | |
3474 | ||
3475 | check_errno (); | |
3476 | if (fd_info[s].flags & FILE_SOCKET) | |
3477 | { | |
3478 | int rc = pfn_setsockopt (SOCK_HANDLE (s), level, optname, | |
a5a389bb | 3479 | (const char *)optval, optlen); |
962955c5 JR |
3480 | if (rc == SOCKET_ERROR) |
3481 | set_errno (); | |
3482 | return rc; | |
3483 | } | |
3484 | h_errno = ENOTSOCK; | |
177c0ea7 | 3485 | return SOCKET_ERROR; |
962955c5 JR |
3486 | } |
3487 | ||
3488 | int | |
3489 | sys_listen (int s, int backlog) | |
3490 | { | |
3491 | if (winsock_lib == NULL) | |
3492 | { | |
3493 | h_errno = ENETDOWN; | |
3494 | return SOCKET_ERROR; | |
3495 | } | |
3496 | ||
3497 | check_errno (); | |
3498 | if (fd_info[s].flags & FILE_SOCKET) | |
3499 | { | |
3500 | int rc = pfn_listen (SOCK_HANDLE (s), backlog); | |
3501 | if (rc == SOCKET_ERROR) | |
3502 | set_errno (); | |
26fb7bc4 | 3503 | else |
64570b36 | 3504 | fd_info[s].flags |= FILE_LISTEN; |
962955c5 JR |
3505 | return rc; |
3506 | } | |
3507 | h_errno = ENOTSOCK; | |
177c0ea7 | 3508 | return SOCKET_ERROR; |
962955c5 JR |
3509 | } |
3510 | ||
3511 | int | |
3512 | sys_getsockname (int s, struct sockaddr * name, int * namelen) | |
3513 | { | |
3514 | if (winsock_lib == NULL) | |
3515 | { | |
3516 | h_errno = ENETDOWN; | |
3517 | return SOCKET_ERROR; | |
3518 | } | |
3519 | ||
3520 | check_errno (); | |
3521 | if (fd_info[s].flags & FILE_SOCKET) | |
3522 | { | |
3523 | int rc = pfn_getsockname (SOCK_HANDLE (s), name, namelen); | |
3524 | if (rc == SOCKET_ERROR) | |
3525 | set_errno (); | |
3526 | return rc; | |
3527 | } | |
3528 | h_errno = ENOTSOCK; | |
177c0ea7 | 3529 | return SOCKET_ERROR; |
962955c5 JR |
3530 | } |
3531 | ||
3532 | int | |
3533 | sys_accept (int s, struct sockaddr * addr, int * addrlen) | |
3534 | { | |
3535 | if (winsock_lib == NULL) | |
3536 | { | |
3537 | h_errno = ENETDOWN; | |
3538 | return -1; | |
3539 | } | |
3540 | ||
3541 | check_errno (); | |
26fb7bc4 | 3542 | if (fd_info[s].flags & FILE_LISTEN) |
962955c5 | 3543 | { |
a0ad1860 | 3544 | SOCKET t = pfn_accept (SOCK_HANDLE (s), addr, addrlen); |
64570b36 KS |
3545 | int fd = -1; |
3546 | if (t == INVALID_SOCKET) | |
3547 | set_errno (); | |
3548 | else | |
3549 | fd = socket_to_fd (t); | |
962955c5 | 3550 | |
64570b36 KS |
3551 | fd_info[s].cp->status = STATUS_READ_ACKNOWLEDGED; |
3552 | ResetEvent (fd_info[s].cp->char_avail); | |
3553 | return fd; | |
962955c5 JR |
3554 | } |
3555 | h_errno = ENOTSOCK; | |
3556 | return -1; | |
3557 | } | |
3558 | ||
3559 | int | |
3560 | sys_recvfrom (int s, char * buf, int len, int flags, | |
3561 | struct sockaddr * from, int * fromlen) | |
3562 | { | |
3563 | if (winsock_lib == NULL) | |
3564 | { | |
3565 | h_errno = ENETDOWN; | |
3566 | return SOCKET_ERROR; | |
3567 | } | |
3568 | ||
3569 | check_errno (); | |
3570 | if (fd_info[s].flags & FILE_SOCKET) | |
3571 | { | |
3572 | int rc = pfn_recvfrom (SOCK_HANDLE (s), buf, len, flags, from, fromlen); | |
3573 | if (rc == SOCKET_ERROR) | |
3574 | set_errno (); | |
3575 | return rc; | |
3576 | } | |
3577 | h_errno = ENOTSOCK; | |
3578 | return SOCKET_ERROR; | |
3579 | } | |
3580 | ||
3581 | int | |
3582 | sys_sendto (int s, const char * buf, int len, int flags, | |
3583 | const struct sockaddr * to, int tolen) | |
3584 | { | |
3585 | if (winsock_lib == NULL) | |
3586 | { | |
3587 | h_errno = ENETDOWN; | |
3588 | return SOCKET_ERROR; | |
3589 | } | |
3590 | ||
3591 | check_errno (); | |
3592 | if (fd_info[s].flags & FILE_SOCKET) | |
3593 | { | |
3594 | int rc = pfn_sendto (SOCK_HANDLE (s), buf, len, flags, to, tolen); | |
380961a6 GV |
3595 | if (rc == SOCKET_ERROR) |
3596 | set_errno (); | |
3597 | return rc; | |
3598 | } | |
3599 | h_errno = ENOTSOCK; | |
3600 | return SOCKET_ERROR; | |
3601 | } | |
3602 | ||
ecd270eb JR |
3603 | /* Windows does not have an fcntl function. Provide an implementation |
3604 | solely for making sockets non-blocking. */ | |
3605 | int | |
3606 | fcntl (int s, int cmd, int options) | |
3607 | { | |
3608 | if (winsock_lib == NULL) | |
3609 | { | |
3610 | h_errno = ENETDOWN; | |
3611 | return -1; | |
3612 | } | |
3613 | ||
3614 | check_errno (); | |
3615 | if (fd_info[s].flags & FILE_SOCKET) | |
3616 | { | |
3617 | if (cmd == F_SETFL && options == O_NDELAY) | |
3618 | { | |
3619 | unsigned long nblock = 1; | |
3620 | int rc = pfn_ioctlsocket (SOCK_HANDLE (s), FIONBIO, &nblock); | |
3621 | if (rc == SOCKET_ERROR) | |
3622 | set_errno(); | |
3623 | /* Keep track of the fact that we set this to non-blocking. */ | |
3624 | fd_info[s].flags |= FILE_NDELAY; | |
3625 | return rc; | |
3626 | } | |
3627 | else | |
3628 | { | |
3629 | h_errno = EINVAL; | |
3630 | return SOCKET_ERROR; | |
3631 | } | |
3632 | } | |
3633 | h_errno = ENOTSOCK; | |
3634 | return SOCKET_ERROR; | |
3635 | } | |
3636 | ||
480b0c5b GV |
3637 | #endif /* HAVE_SOCKETS */ |
3638 | ||
3639 | ||
3640 | /* Shadow main io functions: we need to handle pipes and sockets more | |
3641 | intelligently, and implement non-blocking mode as well. */ | |
3642 | ||
3643 | int | |
3644 | sys_close (int fd) | |
3645 | { | |
3646 | int rc; | |
3647 | ||
7559f399 | 3648 | if (fd < 0) |
480b0c5b GV |
3649 | { |
3650 | errno = EBADF; | |
3651 | return -1; | |
3652 | } | |
3653 | ||
7559f399 | 3654 | if (fd < MAXDESC && fd_info[fd].cp) |
480b0c5b GV |
3655 | { |
3656 | child_process * cp = fd_info[fd].cp; | |
3657 | ||
3658 | fd_info[fd].cp = NULL; | |
3659 | ||
3660 | if (CHILD_ACTIVE (cp)) | |
3661 | { | |
3662 | /* if last descriptor to active child_process then cleanup */ | |
3663 | int i; | |
3664 | for (i = 0; i < MAXDESC; i++) | |
3665 | { | |
3666 | if (i == fd) | |
3667 | continue; | |
3668 | if (fd_info[i].cp == cp) | |
3669 | break; | |
3670 | } | |
3671 | if (i == MAXDESC) | |
3672 | { | |
f249a012 | 3673 | #ifdef HAVE_SOCKETS |
480b0c5b GV |
3674 | if (fd_info[fd].flags & FILE_SOCKET) |
3675 | { | |
f249a012 RS |
3676 | #ifndef SOCK_REPLACE_HANDLE |
3677 | if (winsock_lib == NULL) abort (); | |
480b0c5b GV |
3678 | |
3679 | pfn_shutdown (SOCK_HANDLE (fd), 2); | |
3680 | rc = pfn_closesocket (SOCK_HANDLE (fd)); | |
f249a012 RS |
3681 | #endif |
3682 | winsock_inuse--; /* count open sockets */ | |
480b0c5b GV |
3683 | } |
3684 | #endif | |
3685 | delete_child (cp); | |
3686 | } | |
3687 | } | |
3688 | } | |
3689 | ||
3690 | /* Note that sockets do not need special treatment here (at least on | |
e9e23e23 | 3691 | NT and Windows 95 using the standard tcp/ip stacks) - it appears that |
480b0c5b GV |
3692 | closesocket is equivalent to CloseHandle, which is to be expected |
3693 | because socket handles are fully fledged kernel handles. */ | |
3694 | rc = _close (fd); | |
3695 | ||
7559f399 | 3696 | if (rc == 0 && fd < MAXDESC) |
480b0c5b GV |
3697 | fd_info[fd].flags = 0; |
3698 | ||
3699 | return rc; | |
3700 | } | |
3701 | ||
3702 | int | |
3703 | sys_dup (int fd) | |
3704 | { | |
3705 | int new_fd; | |
3706 | ||
3707 | new_fd = _dup (fd); | |
7559f399 | 3708 | if (new_fd >= 0 && new_fd < MAXDESC) |
480b0c5b GV |
3709 | { |
3710 | /* duplicate our internal info as well */ | |
3711 | fd_info[new_fd] = fd_info[fd]; | |
3712 | } | |
3713 | return new_fd; | |
3714 | } | |
3715 | ||
3716 | ||
3717 | int | |
3718 | sys_dup2 (int src, int dst) | |
3719 | { | |
3720 | int rc; | |
3721 | ||
3722 | if (dst < 0 || dst >= MAXDESC) | |
3723 | { | |
3724 | errno = EBADF; | |
3725 | return -1; | |
3726 | } | |
3727 | ||
3728 | /* make sure we close the destination first if it's a pipe or socket */ | |
3729 | if (src != dst && fd_info[dst].flags != 0) | |
3730 | sys_close (dst); | |
177c0ea7 | 3731 | |
480b0c5b GV |
3732 | rc = _dup2 (src, dst); |
3733 | if (rc == 0) | |
3734 | { | |
3735 | /* duplicate our internal info as well */ | |
3736 | fd_info[dst] = fd_info[src]; | |
3737 | } | |
3738 | return rc; | |
3739 | } | |
3740 | ||
480b0c5b GV |
3741 | /* Unix pipe() has only one arg */ |
3742 | int | |
3743 | sys_pipe (int * phandles) | |
3744 | { | |
3745 | int rc; | |
3746 | unsigned flags; | |
480b0c5b | 3747 | |
76b3903d GV |
3748 | /* make pipe handles non-inheritable; when we spawn a child, we |
3749 | replace the relevant handle with an inheritable one. Also put | |
3750 | pipes into binary mode; we will do text mode translation ourselves | |
3751 | if required. */ | |
3752 | rc = _pipe (phandles, 0, _O_NOINHERIT | _O_BINARY); | |
480b0c5b GV |
3753 | |
3754 | if (rc == 0) | |
3755 | { | |
cb72110d JR |
3756 | /* Protect against overflow, since Windows can open more handles than |
3757 | our fd_info array has room for. */ | |
3758 | if (phandles[0] >= MAXDESC || phandles[1] >= MAXDESC) | |
3759 | { | |
3760 | _close (phandles[0]); | |
3761 | _close (phandles[1]); | |
3762 | rc = -1; | |
3763 | } | |
3764 | else | |
3765 | { | |
3766 | flags = FILE_PIPE | FILE_READ | FILE_BINARY; | |
3767 | fd_info[phandles[0]].flags = flags; | |
480b0c5b | 3768 | |
cb72110d JR |
3769 | flags = FILE_PIPE | FILE_WRITE | FILE_BINARY; |
3770 | fd_info[phandles[1]].flags = flags; | |
3771 | } | |
480b0c5b GV |
3772 | } |
3773 | ||
3774 | return rc; | |
3775 | } | |
3776 | ||
f7554349 | 3777 | /* From ntproc.c */ |
78806724 | 3778 | extern int w32_pipe_read_delay; |
f7554349 | 3779 | |
480b0c5b GV |
3780 | /* Function to do blocking read of one byte, needed to implement |
3781 | select. It is only allowed on sockets and pipes. */ | |
3782 | int | |
3783 | _sys_read_ahead (int fd) | |
3784 | { | |
3785 | child_process * cp; | |
3786 | int rc; | |
3787 | ||
3788 | if (fd < 0 || fd >= MAXDESC) | |
3789 | return STATUS_READ_ERROR; | |
3790 | ||
3791 | cp = fd_info[fd].cp; | |
3792 | ||
3793 | if (cp == NULL || cp->fd != fd || cp->status != STATUS_READ_READY) | |
3794 | return STATUS_READ_ERROR; | |
3795 | ||
3796 | if ((fd_info[fd].flags & (FILE_PIPE | FILE_SOCKET)) == 0 | |
3797 | || (fd_info[fd].flags & FILE_READ) == 0) | |
3798 | { | |
3799 | DebPrint (("_sys_read_ahead: internal error: fd %d is not a pipe or socket!\n", fd)); | |
3800 | abort (); | |
3801 | } | |
177c0ea7 | 3802 | |
480b0c5b | 3803 | cp->status = STATUS_READ_IN_PROGRESS; |
177c0ea7 | 3804 | |
480b0c5b | 3805 | if (fd_info[fd].flags & FILE_PIPE) |
f7554349 | 3806 | { |
f7554349 KH |
3807 | rc = _read (fd, &cp->chr, sizeof (char)); |
3808 | ||
3809 | /* Give subprocess time to buffer some more output for us before | |
e9e23e23 | 3810 | reporting that input is available; we need this because Windows 95 |
f7554349 KH |
3811 | connects DOS programs to pipes by making the pipe appear to be |
3812 | the normal console stdout - as a result most DOS programs will | |
3813 | write to stdout without buffering, ie. one character at a | |
fbd6baed | 3814 | time. Even some W32 programs do this - "dir" in a command |
f7554349 KH |
3815 | shell on NT is very slow if we don't do this. */ |
3816 | if (rc > 0) | |
3817 | { | |
78806724 | 3818 | int wait = w32_pipe_read_delay; |
f7554349 KH |
3819 | |
3820 | if (wait > 0) | |
3821 | Sleep (wait); | |
3822 | else if (wait < 0) | |
3823 | while (++wait <= 0) | |
3824 | /* Yield remainder of our time slice, effectively giving a | |
3825 | temporary priority boost to the child process. */ | |
3826 | Sleep (0); | |
3827 | } | |
3828 | } | |
480b0c5b GV |
3829 | #ifdef HAVE_SOCKETS |
3830 | else if (fd_info[fd].flags & FILE_SOCKET) | |
ecd270eb JR |
3831 | { |
3832 | unsigned long nblock = 0; | |
3833 | /* We always want this to block, so temporarily disable NDELAY. */ | |
3834 | if (fd_info[fd].flags & FILE_NDELAY) | |
3835 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONBIO, &nblock); | |
3836 | ||
3837 | rc = pfn_recv (SOCK_HANDLE (fd), &cp->chr, sizeof (char), 0); | |
3838 | ||
3839 | if (fd_info[fd].flags & FILE_NDELAY) | |
3840 | { | |
3841 | nblock = 1; | |
3842 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONBIO, &nblock); | |
3843 | } | |
3844 | } | |
480b0c5b | 3845 | #endif |
177c0ea7 | 3846 | |
480b0c5b GV |
3847 | if (rc == sizeof (char)) |
3848 | cp->status = STATUS_READ_SUCCEEDED; | |
3849 | else | |
3850 | cp->status = STATUS_READ_FAILED; | |
3851 | ||
3852 | return cp->status; | |
3853 | } | |
3854 | ||
9bfb11f9 KS |
3855 | int |
3856 | _sys_wait_accept (int fd) | |
64570b36 KS |
3857 | { |
3858 | HANDLE hEv; | |
3859 | child_process * cp; | |
3860 | int rc; | |
3861 | ||
3862 | if (fd < 0 || fd >= MAXDESC) | |
3863 | return STATUS_READ_ERROR; | |
3864 | ||
3865 | cp = fd_info[fd].cp; | |
3866 | ||
3867 | if (cp == NULL || cp->fd != fd || cp->status != STATUS_READ_READY) | |
3868 | return STATUS_READ_ERROR; | |
3869 | ||
3870 | cp->status = STATUS_READ_FAILED; | |
3871 | ||
3872 | hEv = pfn_WSACreateEvent (); | |
3873 | rc = pfn_WSAEventSelect (SOCK_HANDLE (fd), hEv, FD_ACCEPT); | |
3874 | if (rc != SOCKET_ERROR) | |
3875 | { | |
3876 | rc = WaitForSingleObject (hEv, INFINITE); | |
3877 | pfn_WSAEventSelect (SOCK_HANDLE (fd), NULL, 0); | |
64570b36 KS |
3878 | if (rc == WAIT_OBJECT_0) |
3879 | cp->status = STATUS_READ_SUCCEEDED; | |
3880 | } | |
7046f191 | 3881 | pfn_WSACloseEvent (hEv); |
64570b36 KS |
3882 | |
3883 | return cp->status; | |
3884 | } | |
3885 | ||
480b0c5b GV |
3886 | int |
3887 | sys_read (int fd, char * buffer, unsigned int count) | |
3888 | { | |
3889 | int nchars; | |
480b0c5b GV |
3890 | int to_read; |
3891 | DWORD waiting; | |
76b3903d | 3892 | char * orig_buffer = buffer; |
480b0c5b | 3893 | |
7559f399 | 3894 | if (fd < 0) |
480b0c5b GV |
3895 | { |
3896 | errno = EBADF; | |
3897 | return -1; | |
3898 | } | |
3899 | ||
7559f399 | 3900 | if (fd < MAXDESC && fd_info[fd].flags & (FILE_PIPE | FILE_SOCKET)) |
480b0c5b GV |
3901 | { |
3902 | child_process *cp = fd_info[fd].cp; | |
3903 | ||
3904 | if ((fd_info[fd].flags & FILE_READ) == 0) | |
3905 | { | |
3906 | errno = EBADF; | |
3907 | return -1; | |
3908 | } | |
3909 | ||
76b3903d GV |
3910 | nchars = 0; |
3911 | ||
3912 | /* re-read CR carried over from last read */ | |
3913 | if (fd_info[fd].flags & FILE_LAST_CR) | |
3914 | { | |
3915 | if (fd_info[fd].flags & FILE_BINARY) abort (); | |
3916 | *buffer++ = 0x0d; | |
3917 | count--; | |
3918 | nchars++; | |
f52eb3ef | 3919 | fd_info[fd].flags &= ~FILE_LAST_CR; |
76b3903d GV |
3920 | } |
3921 | ||
480b0c5b GV |
3922 | /* presence of a child_process structure means we are operating in |
3923 | non-blocking mode - otherwise we just call _read directly. | |
3924 | Note that the child_process structure might be missing because | |
3925 | reap_subprocess has been called; in this case the pipe is | |
3926 | already broken, so calling _read on it is okay. */ | |
3927 | if (cp) | |
3928 | { | |
3929 | int current_status = cp->status; | |
3930 | ||
3931 | switch (current_status) | |
3932 | { | |
3933 | case STATUS_READ_FAILED: | |
3934 | case STATUS_READ_ERROR: | |
f52eb3ef GV |
3935 | /* report normal EOF if nothing in buffer */ |
3936 | if (nchars <= 0) | |
3937 | fd_info[fd].flags |= FILE_AT_EOF; | |
3938 | return nchars; | |
480b0c5b GV |
3939 | |
3940 | case STATUS_READ_READY: | |
3941 | case STATUS_READ_IN_PROGRESS: | |
3942 | DebPrint (("sys_read called when read is in progress\n")); | |
3943 | errno = EWOULDBLOCK; | |
3944 | return -1; | |
3945 | ||
3946 | case STATUS_READ_SUCCEEDED: | |
3947 | /* consume read-ahead char */ | |
3948 | *buffer++ = cp->chr; | |
3949 | count--; | |
76b3903d | 3950 | nchars++; |
480b0c5b GV |
3951 | cp->status = STATUS_READ_ACKNOWLEDGED; |
3952 | ResetEvent (cp->char_avail); | |
3953 | ||
3954 | case STATUS_READ_ACKNOWLEDGED: | |
3955 | break; | |
3956 | ||
3957 | default: | |
3958 | DebPrint (("sys_read: bad status %d\n", current_status)); | |
3959 | errno = EBADF; | |
3960 | return -1; | |
3961 | } | |
3962 | ||
3963 | if (fd_info[fd].flags & FILE_PIPE) | |
3964 | { | |
3965 | PeekNamedPipe ((HANDLE) _get_osfhandle (fd), NULL, 0, NULL, &waiting, NULL); | |
3966 | to_read = min (waiting, (DWORD) count); | |
f52eb3ef GV |
3967 | |
3968 | if (to_read > 0) | |
3969 | nchars += _read (fd, buffer, to_read); | |
480b0c5b GV |
3970 | } |
3971 | #ifdef HAVE_SOCKETS | |
3972 | else /* FILE_SOCKET */ | |
3973 | { | |
f249a012 | 3974 | if (winsock_lib == NULL) abort (); |
480b0c5b GV |
3975 | |
3976 | /* do the equivalent of a non-blocking read */ | |
3977 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONREAD, &waiting); | |
76b3903d | 3978 | if (waiting == 0 && nchars == 0) |
480b0c5b GV |
3979 | { |
3980 | h_errno = errno = EWOULDBLOCK; | |
3981 | return -1; | |
3982 | } | |
3983 | ||
480b0c5b GV |
3984 | if (waiting) |
3985 | { | |
3986 | /* always use binary mode for sockets */ | |
76b3903d GV |
3987 | int res = pfn_recv (SOCK_HANDLE (fd), buffer, count, 0); |
3988 | if (res == SOCKET_ERROR) | |
480b0c5b GV |
3989 | { |
3990 | DebPrint(("sys_read.recv failed with error %d on socket %ld\n", | |
3991 | pfn_WSAGetLastError (), SOCK_HANDLE (fd))); | |
76b3903d GV |
3992 | set_errno (); |
3993 | return -1; | |
480b0c5b | 3994 | } |
76b3903d | 3995 | nchars += res; |
480b0c5b GV |
3996 | } |
3997 | } | |
3998 | #endif | |
3999 | } | |
4000 | else | |
f52eb3ef GV |
4001 | { |
4002 | int nread = _read (fd, buffer, count); | |
4003 | if (nread >= 0) | |
4004 | nchars += nread; | |
4005 | else if (nchars == 0) | |
4006 | nchars = nread; | |
4007 | } | |
76b3903d | 4008 | |
f52eb3ef GV |
4009 | if (nchars <= 0) |
4010 | fd_info[fd].flags |= FILE_AT_EOF; | |
76b3903d | 4011 | /* Perform text mode translation if required. */ |
f52eb3ef | 4012 | else if ((fd_info[fd].flags & FILE_BINARY) == 0) |
76b3903d GV |
4013 | { |
4014 | nchars = crlf_to_lf (nchars, orig_buffer); | |
4015 | /* If buffer contains only CR, return that. To be absolutely | |
4016 | sure we should attempt to read the next char, but in | |
4017 | practice a CR to be followed by LF would not appear by | |
4018 | itself in the buffer. */ | |
4019 | if (nchars > 1 && orig_buffer[nchars - 1] == 0x0d) | |
4020 | { | |
4021 | fd_info[fd].flags |= FILE_LAST_CR; | |
4022 | nchars--; | |
4023 | } | |
76b3903d | 4024 | } |
480b0c5b GV |
4025 | } |
4026 | else | |
4027 | nchars = _read (fd, buffer, count); | |
4028 | ||
76b3903d | 4029 | return nchars; |
480b0c5b GV |
4030 | } |
4031 | ||
4032 | /* For now, don't bother with a non-blocking mode */ | |
4033 | int | |
4034 | sys_write (int fd, const void * buffer, unsigned int count) | |
4035 | { | |
4036 | int nchars; | |
4037 | ||
7559f399 | 4038 | if (fd < 0) |
480b0c5b GV |
4039 | { |
4040 | errno = EBADF; | |
4041 | return -1; | |
4042 | } | |
4043 | ||
7559f399 | 4044 | if (fd < MAXDESC && fd_info[fd].flags & (FILE_PIPE | FILE_SOCKET)) |
76b3903d GV |
4045 | { |
4046 | if ((fd_info[fd].flags & FILE_WRITE) == 0) | |
4047 | { | |
4048 | errno = EBADF; | |
4049 | return -1; | |
4050 | } | |
4051 | ||
4052 | /* Perform text mode translation if required. */ | |
4053 | if ((fd_info[fd].flags & FILE_BINARY) == 0) | |
4054 | { | |
4055 | char * tmpbuf = alloca (count * 2); | |
4056 | unsigned char * src = (void *)buffer; | |
4057 | unsigned char * dst = tmpbuf; | |
4058 | int nbytes = count; | |
4059 | ||
4060 | while (1) | |
4061 | { | |
4062 | unsigned char *next; | |
4063 | /* copy next line or remaining bytes */ | |
4064 | next = _memccpy (dst, src, '\n', nbytes); | |
4065 | if (next) | |
4066 | { | |
4067 | /* copied one line ending with '\n' */ | |
4068 | int copied = next - dst; | |
4069 | nbytes -= copied; | |
4070 | src += copied; | |
4071 | /* insert '\r' before '\n' */ | |
4072 | next[-1] = '\r'; | |
4073 | next[0] = '\n'; | |
4074 | dst = next + 1; | |
4075 | count++; | |
177c0ea7 | 4076 | } |
76b3903d GV |
4077 | else |
4078 | /* copied remaining partial line -> now finished */ | |
4079 | break; | |
4080 | } | |
4081 | buffer = tmpbuf; | |
4082 | } | |
4083 | } | |
4084 | ||
480b0c5b | 4085 | #ifdef HAVE_SOCKETS |
7559f399 | 4086 | if (fd < MAXDESC && fd_info[fd].flags & FILE_SOCKET) |
480b0c5b | 4087 | { |
30a32e0e | 4088 | unsigned long nblock = 0; |
f249a012 | 4089 | if (winsock_lib == NULL) abort (); |
30a32e0e JR |
4090 | |
4091 | /* TODO: implement select() properly so non-blocking I/O works. */ | |
4092 | /* For now, make sure the write blocks. */ | |
4093 | if (fd_info[fd].flags & FILE_NDELAY) | |
4094 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONBIO, &nblock); | |
4095 | ||
480b0c5b | 4096 | nchars = pfn_send (SOCK_HANDLE (fd), buffer, count, 0); |
30a32e0e JR |
4097 | |
4098 | /* Set the socket back to non-blocking if it was before, | |
4099 | for other operations that support it. */ | |
4100 | if (fd_info[fd].flags & FILE_NDELAY) | |
4101 | { | |
4102 | nblock = 1; | |
4103 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONBIO, &nblock); | |
4104 | } | |
4105 | ||
480b0c5b GV |
4106 | if (nchars == SOCKET_ERROR) |
4107 | { | |
670773af | 4108 | DebPrint(("sys_write.send failed with error %d on socket %ld\n", |
480b0c5b GV |
4109 | pfn_WSAGetLastError (), SOCK_HANDLE (fd))); |
4110 | set_errno (); | |
4111 | } | |
4112 | } | |
4113 | else | |
4114 | #endif | |
4115 | nchars = _write (fd, buffer, count); | |
4116 | ||
4117 | return nchars; | |
4118 | } | |
4119 | ||
f52eb3ef GV |
4120 | static void |
4121 | check_windows_init_file () | |
4122 | { | |
4123 | extern int noninteractive, inhibit_window_system; | |
4124 | ||
4125 | /* A common indication that Emacs is not installed properly is when | |
4126 | it cannot find the Windows installation file. If this file does | |
4127 | not exist in the expected place, tell the user. */ | |
4128 | ||
177c0ea7 | 4129 | if (!noninteractive && !inhibit_window_system) |
d54abccd GV |
4130 | { |
4131 | extern Lisp_Object Vwindow_system, Vload_path, Qfile_exists_p; | |
a0b9c838 | 4132 | Lisp_Object objs[2]; |
96ef7d42 | 4133 | Lisp_Object full_load_path; |
d54abccd GV |
4134 | Lisp_Object init_file; |
4135 | int fd; | |
f52eb3ef | 4136 | |
a0b9c838 GV |
4137 | objs[0] = Vload_path; |
4138 | objs[1] = decode_env_path (0, (getenv ("EMACSLOADPATH"))); | |
4139 | full_load_path = Fappend (2, objs); | |
d54abccd | 4140 | init_file = build_string ("term/w32-win"); |
c50a2aa6 | 4141 | fd = openp (full_load_path, init_file, Fget_load_suffixes (), NULL, Qnil); |
177c0ea7 | 4142 | if (fd < 0) |
d54abccd | 4143 | { |
96ef7d42 | 4144 | Lisp_Object load_path_print = Fprin1_to_string (full_load_path, Qnil); |
d5db4077 KR |
4145 | char *init_file_name = SDATA (init_file); |
4146 | char *load_path = SDATA (load_path_print); | |
acc23b87 KS |
4147 | char *buffer = alloca (1024 |
4148 | + strlen (init_file_name) | |
4149 | + strlen (load_path)); | |
d54abccd | 4150 | |
177c0ea7 | 4151 | sprintf (buffer, |
d54abccd GV |
4152 | "The Emacs Windows initialization file \"%s.el\" " |
4153 | "could not be found in your Emacs installation. " | |
4154 | "Emacs checked the following directories for this file:\n" | |
4155 | "\n%s\n\n" | |
4156 | "When Emacs cannot find this file, it usually means that it " | |
4157 | "was not installed properly, or its distribution file was " | |
4158 | "not unpacked properly.\nSee the README.W32 file in the " | |
4159 | "top-level Emacs directory for more information.", | |
4160 | init_file_name, load_path); | |
4161 | MessageBox (NULL, | |
4162 | buffer, | |
4163 | "Emacs Abort Dialog", | |
4164 | MB_OK | MB_ICONEXCLAMATION | MB_TASKMODAL); | |
f52eb3ef GV |
4165 | /* Use the low-level Emacs abort. */ |
4166 | #undef abort | |
d54abccd GV |
4167 | abort (); |
4168 | } | |
4169 | else | |
4170 | { | |
a302c7ae | 4171 | _close (fd); |
d54abccd | 4172 | } |
f52eb3ef | 4173 | } |
f52eb3ef | 4174 | } |
480b0c5b GV |
4175 | |
4176 | void | |
4177 | term_ntproc () | |
4178 | { | |
4179 | #ifdef HAVE_SOCKETS | |
4180 | /* shutdown the socket interface if necessary */ | |
4181 | term_winsock (); | |
4182 | #endif | |
52c7f9ee JR |
4183 | |
4184 | term_w32select (); | |
480b0c5b GV |
4185 | } |
4186 | ||
4187 | void | |
4188 | init_ntproc () | |
4189 | { | |
4190 | #ifdef HAVE_SOCKETS | |
f249a012 RS |
4191 | /* Initialise the socket interface now if available and requested by |
4192 | the user by defining PRELOAD_WINSOCK; otherwise loading will be | |
fbd6baed | 4193 | delayed until open-network-stream is called (w32-has-winsock can |
f249a012 RS |
4194 | also be used to dynamically load or reload winsock). |
4195 | ||
4196 | Conveniently, init_environment is called before us, so | |
4197 | PRELOAD_WINSOCK can be set in the registry. */ | |
4198 | ||
4199 | /* Always initialize this correctly. */ | |
4200 | winsock_lib = NULL; | |
4201 | ||
4202 | if (getenv ("PRELOAD_WINSOCK") != NULL) | |
4203 | init_winsock (TRUE); | |
480b0c5b GV |
4204 | #endif |
4205 | ||
4206 | /* Initial preparation for subprocess support: replace our standard | |
4207 | handles with non-inheritable versions. */ | |
4208 | { | |
4209 | HANDLE parent; | |
4210 | HANDLE stdin_save = INVALID_HANDLE_VALUE; | |
4211 | HANDLE stdout_save = INVALID_HANDLE_VALUE; | |
4212 | HANDLE stderr_save = INVALID_HANDLE_VALUE; | |
4213 | ||
4214 | parent = GetCurrentProcess (); | |
4215 | ||
4216 | /* ignore errors when duplicating and closing; typically the | |
4217 | handles will be invalid when running as a gui program. */ | |
177c0ea7 JB |
4218 | DuplicateHandle (parent, |
4219 | GetStdHandle (STD_INPUT_HANDLE), | |
480b0c5b | 4220 | parent, |
177c0ea7 JB |
4221 | &stdin_save, |
4222 | 0, | |
4223 | FALSE, | |
480b0c5b | 4224 | DUPLICATE_SAME_ACCESS); |
177c0ea7 | 4225 | |
480b0c5b GV |
4226 | DuplicateHandle (parent, |
4227 | GetStdHandle (STD_OUTPUT_HANDLE), | |
4228 | parent, | |
4229 | &stdout_save, | |
4230 | 0, | |
4231 | FALSE, | |
4232 | DUPLICATE_SAME_ACCESS); | |
177c0ea7 | 4233 | |
480b0c5b GV |
4234 | DuplicateHandle (parent, |
4235 | GetStdHandle (STD_ERROR_HANDLE), | |
4236 | parent, | |
4237 | &stderr_save, | |
4238 | 0, | |
4239 | FALSE, | |
4240 | DUPLICATE_SAME_ACCESS); | |
177c0ea7 | 4241 | |
480b0c5b GV |
4242 | fclose (stdin); |
4243 | fclose (stdout); | |
4244 | fclose (stderr); | |
4245 | ||
4246 | if (stdin_save != INVALID_HANDLE_VALUE) | |
4247 | _open_osfhandle ((long) stdin_save, O_TEXT); | |
4248 | else | |
76b3903d GV |
4249 | _open ("nul", O_TEXT | O_NOINHERIT | O_RDONLY); |
4250 | _fdopen (0, "r"); | |
480b0c5b GV |
4251 | |
4252 | if (stdout_save != INVALID_HANDLE_VALUE) | |
4253 | _open_osfhandle ((long) stdout_save, O_TEXT); | |
4254 | else | |
76b3903d GV |
4255 | _open ("nul", O_TEXT | O_NOINHERIT | O_WRONLY); |
4256 | _fdopen (1, "w"); | |
480b0c5b GV |
4257 | |
4258 | if (stderr_save != INVALID_HANDLE_VALUE) | |
4259 | _open_osfhandle ((long) stderr_save, O_TEXT); | |
4260 | else | |
76b3903d GV |
4261 | _open ("nul", O_TEXT | O_NOINHERIT | O_WRONLY); |
4262 | _fdopen (2, "w"); | |
480b0c5b GV |
4263 | } |
4264 | ||
4265 | /* unfortunately, atexit depends on implementation of malloc */ | |
4266 | /* atexit (term_ntproc); */ | |
4267 | signal (SIGABRT, term_ntproc); | |
76b3903d GV |
4268 | |
4269 | /* determine which drives are fixed, for GetCachedVolumeInformation */ | |
4270 | { | |
4271 | /* GetDriveType must have trailing backslash. */ | |
4272 | char drive[] = "A:\\"; | |
4273 | ||
4274 | /* Loop over all possible drive letters */ | |
4275 | while (*drive <= 'Z') | |
4276 | { | |
4277 | /* Record if this drive letter refers to a fixed drive. */ | |
177c0ea7 | 4278 | fixed_drives[DRIVE_INDEX (*drive)] = |
76b3903d GV |
4279 | (GetDriveType (drive) == DRIVE_FIXED); |
4280 | ||
4281 | (*drive)++; | |
4282 | } | |
a302c7ae AI |
4283 | |
4284 | /* Reset the volume info cache. */ | |
4285 | volume_cache = NULL; | |
76b3903d | 4286 | } |
177c0ea7 | 4287 | |
d54abccd GV |
4288 | /* Check to see if Emacs has been installed correctly. */ |
4289 | check_windows_init_file (); | |
480b0c5b GV |
4290 | } |
4291 | ||
a8c3a596 JR |
4292 | /* |
4293 | shutdown_handler ensures that buffers' autosave files are | |
4294 | up to date when the user logs off, or the system shuts down. | |
4295 | */ | |
4296 | BOOL WINAPI shutdown_handler(DWORD type) | |
4297 | { | |
4298 | /* Ctrl-C and Ctrl-Break are already suppressed, so don't handle them. */ | |
4299 | if (type == CTRL_CLOSE_EVENT /* User closes console window. */ | |
4300 | || type == CTRL_LOGOFF_EVENT /* User logs off. */ | |
4301 | || type == CTRL_SHUTDOWN_EVENT) /* User shutsdown. */ | |
4302 | { | |
4303 | /* Shut down cleanly, making sure autosave files are up to date. */ | |
4304 | shut_down_emacs (0, 0, Qnil); | |
4305 | } | |
4306 | ||
7046f191 | 4307 | /* Allow other handlers to handle this signal. */ |
a8c3a596 JR |
4308 | return FALSE; |
4309 | } | |
4310 | ||
9785d95b BK |
4311 | /* |
4312 | globals_of_w32 is used to initialize those global variables that | |
4313 | must always be initialized on startup even when the global variable | |
4314 | initialized is non zero (see the function main in emacs.c). | |
4315 | */ | |
9bfb11f9 KS |
4316 | void |
4317 | globals_of_w32 () | |
9785d95b | 4318 | { |
74258518 JR |
4319 | HMODULE kernel32 = GetModuleHandle ("kernel32.dll"); |
4320 | ||
4321 | get_process_times_fn = (GetProcessTimes_Proc) | |
4322 | GetProcAddress (kernel32, "GetProcessTimes"); | |
4323 | ||
9785d95b BK |
4324 | g_b_init_is_windows_9x = 0; |
4325 | g_b_init_open_process_token = 0; | |
4326 | g_b_init_get_token_information = 0; | |
4327 | g_b_init_lookup_account_sid = 0; | |
4328 | g_b_init_get_sid_identifier_authority = 0; | |
9d95a291 EZ |
4329 | g_b_init_get_sid_sub_authority = 0; |
4330 | g_b_init_get_sid_sub_authority_count = 0; | |
a8c3a596 JR |
4331 | /* The following sets a handler for shutdown notifications for |
4332 | console apps. This actually applies to Emacs in both console and | |
4333 | GUI modes, since we had to fool windows into thinking emacs is a | |
4334 | console application to get console mode to work. */ | |
4335 | SetConsoleCtrlHandler(shutdown_handler, TRUE); | |
9785d95b BK |
4336 | } |
4337 | ||
aa5ee2a3 | 4338 | /* end of w32.c */ |
ab5796a9 MB |
4339 | |
4340 | /* arch-tag: 90442dd3-37be-482b-b272-ac752e3049f1 | |
4341 | (do not change this comment) */ |