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 |
9785d95b | 116 | /* |
aa5ee2a3 | 117 | Initialization states |
9785d95b BK |
118 | */ |
119 | static BOOL g_b_init_is_windows_9x; | |
120 | static BOOL g_b_init_open_process_token; | |
121 | static BOOL g_b_init_get_token_information; | |
122 | static BOOL g_b_init_lookup_account_sid; | |
123 | static BOOL g_b_init_get_sid_identifier_authority; | |
c617afce EZ |
124 | static BOOL g_b_init_get_sid_sub_authority; |
125 | static BOOL g_b_init_get_sid_sub_authority_count; | |
9785d95b | 126 | |
f60ae425 BK |
127 | /* |
128 | BEGIN: Wrapper functions around OpenProcessToken | |
129 | and other functions in advapi32.dll that are only | |
130 | supported in Windows NT / 2k / XP | |
131 | */ | |
132 | /* ** Function pointer typedefs ** */ | |
133 | typedef BOOL (WINAPI * OpenProcessToken_Proc) ( | |
134 | HANDLE ProcessHandle, | |
135 | DWORD DesiredAccess, | |
136 | PHANDLE TokenHandle); | |
137 | typedef BOOL (WINAPI * GetTokenInformation_Proc) ( | |
138 | HANDLE TokenHandle, | |
139 | TOKEN_INFORMATION_CLASS TokenInformationClass, | |
140 | LPVOID TokenInformation, | |
141 | DWORD TokenInformationLength, | |
142 | PDWORD ReturnLength); | |
74258518 JR |
143 | typedef BOOL (WINAPI * GetProcessTimes_Proc) ( |
144 | HANDLE process_handle, | |
145 | LPFILETIME creation_time, | |
146 | LPFILETIME exit_time, | |
147 | LPFILETIME kernel_time, | |
148 | LPFILETIME user_time); | |
149 | ||
150 | GetProcessTimes_Proc get_process_times_fn = NULL; | |
151 | ||
f60ae425 BK |
152 | #ifdef _UNICODE |
153 | const char * const LookupAccountSid_Name = "LookupAccountSidW"; | |
154 | #else | |
155 | const char * const LookupAccountSid_Name = "LookupAccountSidA"; | |
156 | #endif | |
157 | typedef BOOL (WINAPI * LookupAccountSid_Proc) ( | |
158 | LPCTSTR lpSystemName, | |
159 | PSID Sid, | |
160 | LPTSTR Name, | |
161 | LPDWORD cbName, | |
162 | LPTSTR DomainName, | |
163 | LPDWORD cbDomainName, | |
164 | PSID_NAME_USE peUse); | |
165 | typedef PSID_IDENTIFIER_AUTHORITY (WINAPI * GetSidIdentifierAuthority_Proc) ( | |
166 | PSID pSid); | |
c617afce EZ |
167 | typedef PDWORD (WINAPI * GetSidSubAuthority_Proc) ( |
168 | PSID pSid, | |
169 | DWORD n); | |
170 | typedef PUCHAR (WINAPI * GetSidSubAuthorityCount_Proc) ( | |
171 | PSID pSid); | |
172 | ||
f60ae425 BK |
173 | |
174 | /* ** A utility function ** */ | |
9bfb11f9 KS |
175 | static BOOL |
176 | is_windows_9x () | |
f60ae425 | 177 | { |
9785d95b | 178 | static BOOL s_b_ret=0; |
f60ae425 | 179 | OSVERSIONINFO os_ver; |
9785d95b | 180 | if (g_b_init_is_windows_9x == 0) |
f60ae425 | 181 | { |
9785d95b BK |
182 | g_b_init_is_windows_9x = 1; |
183 | ZeroMemory(&os_ver, sizeof(OSVERSIONINFO)); | |
184 | os_ver.dwOSVersionInfoSize = sizeof(OSVERSIONINFO); | |
185 | if (GetVersionEx (&os_ver)) | |
186 | { | |
187 | s_b_ret = (os_ver.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS); | |
188 | } | |
f60ae425 | 189 | } |
9785d95b | 190 | return s_b_ret; |
f60ae425 BK |
191 | } |
192 | ||
74258518 JR |
193 | /* Get total user and system times for get-internal-run-time. |
194 | Returns a list of three integers if the times are provided by the OS | |
195 | (NT derivatives), otherwise it returns the result of current-time. */ | |
196 | Lisp_Object | |
197 | w32_get_internal_run_time () | |
198 | { | |
199 | if (get_process_times_fn) | |
200 | { | |
201 | FILETIME create, exit, kernel, user; | |
202 | HANDLE proc = GetCurrentProcess(); | |
203 | if ((*get_process_times_fn) (proc, &create, &exit, &kernel, &user)) | |
204 | { | |
205 | LARGE_INTEGER user_int, kernel_int, total; | |
206 | int microseconds; | |
207 | user_int.LowPart = user.dwLowDateTime; | |
208 | user_int.HighPart = user.dwHighDateTime; | |
209 | kernel_int.LowPart = kernel.dwLowDateTime; | |
210 | kernel_int.HighPart = kernel.dwHighDateTime; | |
211 | total.QuadPart = user_int.QuadPart + kernel_int.QuadPart; | |
212 | /* FILETIME is 100 nanosecond increments, Emacs only wants | |
213 | microsecond resolution. */ | |
214 | total.QuadPart /= 10; | |
215 | microseconds = total.QuadPart % 1000000; | |
216 | total.QuadPart /= 1000000; | |
217 | ||
218 | /* Sanity check to make sure we can represent the result. */ | |
219 | if (total.HighPart == 0) | |
220 | { | |
221 | int secs = total.LowPart; | |
222 | ||
223 | return list3 (make_number ((secs >> 16) & 0xffff), | |
224 | make_number (secs & 0xffff), | |
225 | make_number (microseconds)); | |
226 | } | |
227 | } | |
228 | } | |
229 | ||
230 | return Fcurrent_time (); | |
231 | } | |
232 | ||
f60ae425 BK |
233 | /* ** The wrapper functions ** */ |
234 | ||
235 | BOOL WINAPI open_process_token ( | |
236 | HANDLE ProcessHandle, | |
237 | DWORD DesiredAccess, | |
238 | PHANDLE TokenHandle) | |
239 | { | |
9785d95b | 240 | static OpenProcessToken_Proc s_pfn_Open_Process_Token = NULL; |
f60ae425 BK |
241 | HMODULE hm_advapi32 = NULL; |
242 | if (is_windows_9x () == TRUE) | |
243 | { | |
244 | return FALSE; | |
245 | } | |
9785d95b BK |
246 | if (g_b_init_open_process_token == 0) |
247 | { | |
248 | g_b_init_open_process_token = 1; | |
249 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
250 | s_pfn_Open_Process_Token = | |
251 | (OpenProcessToken_Proc) GetProcAddress (hm_advapi32, "OpenProcessToken"); | |
252 | } | |
253 | if (s_pfn_Open_Process_Token == NULL) | |
f60ae425 BK |
254 | { |
255 | return FALSE; | |
256 | } | |
257 | return ( | |
9785d95b | 258 | s_pfn_Open_Process_Token ( |
f60ae425 BK |
259 | ProcessHandle, |
260 | DesiredAccess, | |
261 | TokenHandle) | |
262 | ); | |
263 | } | |
264 | ||
265 | BOOL WINAPI get_token_information ( | |
266 | HANDLE TokenHandle, | |
267 | TOKEN_INFORMATION_CLASS TokenInformationClass, | |
268 | LPVOID TokenInformation, | |
269 | DWORD TokenInformationLength, | |
270 | PDWORD ReturnLength) | |
271 | { | |
9785d95b | 272 | static GetTokenInformation_Proc s_pfn_Get_Token_Information = NULL; |
f60ae425 BK |
273 | HMODULE hm_advapi32 = NULL; |
274 | if (is_windows_9x () == TRUE) | |
275 | { | |
276 | return FALSE; | |
277 | } | |
9785d95b BK |
278 | if (g_b_init_get_token_information == 0) |
279 | { | |
280 | g_b_init_get_token_information = 1; | |
281 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
282 | s_pfn_Get_Token_Information = | |
283 | (GetTokenInformation_Proc) GetProcAddress (hm_advapi32, "GetTokenInformation"); | |
284 | } | |
285 | if (s_pfn_Get_Token_Information == NULL) | |
f60ae425 BK |
286 | { |
287 | return FALSE; | |
288 | } | |
289 | return ( | |
9785d95b | 290 | s_pfn_Get_Token_Information ( |
f60ae425 BK |
291 | TokenHandle, |
292 | TokenInformationClass, | |
293 | TokenInformation, | |
294 | TokenInformationLength, | |
295 | ReturnLength) | |
296 | ); | |
297 | } | |
298 | ||
299 | BOOL WINAPI lookup_account_sid ( | |
300 | LPCTSTR lpSystemName, | |
301 | PSID Sid, | |
302 | LPTSTR Name, | |
303 | LPDWORD cbName, | |
304 | LPTSTR DomainName, | |
305 | LPDWORD cbDomainName, | |
306 | PSID_NAME_USE peUse) | |
307 | { | |
9785d95b | 308 | static LookupAccountSid_Proc s_pfn_Lookup_Account_Sid = NULL; |
f60ae425 BK |
309 | HMODULE hm_advapi32 = NULL; |
310 | if (is_windows_9x () == TRUE) | |
311 | { | |
312 | return FALSE; | |
313 | } | |
9785d95b BK |
314 | if (g_b_init_lookup_account_sid == 0) |
315 | { | |
316 | g_b_init_lookup_account_sid = 1; | |
317 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
318 | s_pfn_Lookup_Account_Sid = | |
319 | (LookupAccountSid_Proc) GetProcAddress (hm_advapi32, LookupAccountSid_Name); | |
320 | } | |
321 | if (s_pfn_Lookup_Account_Sid == NULL) | |
f60ae425 BK |
322 | { |
323 | return FALSE; | |
324 | } | |
325 | return ( | |
9785d95b | 326 | s_pfn_Lookup_Account_Sid ( |
f60ae425 BK |
327 | lpSystemName, |
328 | Sid, | |
329 | Name, | |
330 | cbName, | |
331 | DomainName, | |
332 | cbDomainName, | |
333 | peUse) | |
334 | ); | |
335 | } | |
336 | ||
337 | PSID_IDENTIFIER_AUTHORITY WINAPI get_sid_identifier_authority ( | |
338 | PSID pSid) | |
339 | { | |
9785d95b | 340 | static GetSidIdentifierAuthority_Proc s_pfn_Get_Sid_Identifier_Authority = NULL; |
f60ae425 BK |
341 | HMODULE hm_advapi32 = NULL; |
342 | if (is_windows_9x () == TRUE) | |
343 | { | |
344 | return NULL; | |
345 | } | |
9785d95b BK |
346 | if (g_b_init_get_sid_identifier_authority == 0) |
347 | { | |
348 | g_b_init_get_sid_identifier_authority = 1; | |
349 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
350 | s_pfn_Get_Sid_Identifier_Authority = | |
351 | (GetSidIdentifierAuthority_Proc) GetProcAddress ( | |
352 | hm_advapi32, "GetSidIdentifierAuthority"); | |
353 | } | |
354 | if (s_pfn_Get_Sid_Identifier_Authority == NULL) | |
f60ae425 BK |
355 | { |
356 | return NULL; | |
357 | } | |
9785d95b | 358 | return (s_pfn_Get_Sid_Identifier_Authority (pSid)); |
f60ae425 BK |
359 | } |
360 | ||
c617afce EZ |
361 | PDWORD WINAPI get_sid_sub_authority ( |
362 | PSID pSid, | |
363 | DWORD n) | |
364 | { | |
365 | static GetSidSubAuthority_Proc s_pfn_Get_Sid_Sub_Authority = NULL; | |
6811b9f4 | 366 | static DWORD zero = 0U; |
c617afce EZ |
367 | HMODULE hm_advapi32 = NULL; |
368 | if (is_windows_9x () == TRUE) | |
369 | { | |
6811b9f4 | 370 | return &zero; |
c617afce EZ |
371 | } |
372 | if (g_b_init_get_sid_sub_authority == 0) | |
373 | { | |
374 | g_b_init_get_sid_sub_authority = 1; | |
375 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
376 | s_pfn_Get_Sid_Sub_Authority = | |
377 | (GetSidSubAuthority_Proc) GetProcAddress ( | |
378 | hm_advapi32, "GetSidSubAuthority"); | |
379 | } | |
380 | if (s_pfn_Get_Sid_Sub_Authority == NULL) | |
381 | { | |
6811b9f4 | 382 | return &zero; |
c617afce EZ |
383 | } |
384 | return (s_pfn_Get_Sid_Sub_Authority (pSid, n)); | |
385 | } | |
386 | ||
387 | PUCHAR WINAPI get_sid_sub_authority_count ( | |
388 | PSID pSid) | |
389 | { | |
390 | static GetSidSubAuthorityCount_Proc s_pfn_Get_Sid_Sub_Authority_Count = NULL; | |
6811b9f4 | 391 | static UCHAR zero = 0U; |
c617afce EZ |
392 | HMODULE hm_advapi32 = NULL; |
393 | if (is_windows_9x () == TRUE) | |
394 | { | |
6811b9f4 | 395 | return &zero; |
c617afce EZ |
396 | } |
397 | if (g_b_init_get_sid_sub_authority_count == 0) | |
398 | { | |
399 | g_b_init_get_sid_sub_authority_count = 1; | |
400 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
401 | s_pfn_Get_Sid_Sub_Authority_Count = | |
402 | (GetSidSubAuthorityCount_Proc) GetProcAddress ( | |
403 | hm_advapi32, "GetSidSubAuthorityCount"); | |
404 | } | |
405 | if (s_pfn_Get_Sid_Sub_Authority_Count == NULL) | |
406 | { | |
6811b9f4 | 407 | return &zero; |
c617afce EZ |
408 | } |
409 | return (s_pfn_Get_Sid_Sub_Authority_Count (pSid)); | |
410 | } | |
411 | ||
f60ae425 BK |
412 | /* |
413 | END: Wrapper functions around OpenProcessToken | |
414 | and other functions in advapi32.dll that are only | |
415 | supported in Windows NT / 2k / XP | |
416 | */ | |
417 | ||
418 | \f | |
18e070ac AI |
419 | /* Equivalent of strerror for W32 error codes. */ |
420 | char * | |
421 | w32_strerror (int error_no) | |
422 | { | |
423 | static char buf[500]; | |
424 | ||
425 | if (error_no == 0) | |
426 | error_no = GetLastError (); | |
427 | ||
428 | buf[0] = '\0'; | |
429 | if (!FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM, NULL, | |
430 | error_no, | |
431 | 0, /* choose most suitable language */ | |
432 | buf, sizeof (buf), NULL)) | |
433 | sprintf (buf, "w32 error %u", error_no); | |
434 | return buf; | |
435 | } | |
436 | ||
ed91b2ad EZ |
437 | /* Return 1 if P is a valid pointer to an object of size SIZE. Return |
438 | 0 if P is NOT a valid pointer. Return -1 if we cannot validate P. | |
439 | ||
440 | This is called from alloc.c:valid_pointer_p. */ | |
441 | int | |
442 | w32_valid_pointer_p (void *p, int size) | |
443 | { | |
444 | SIZE_T done; | |
445 | HANDLE h = OpenProcess (PROCESS_VM_READ, FALSE, GetCurrentProcessId ()); | |
446 | ||
447 | if (h) | |
448 | { | |
449 | unsigned char *buf = alloca (size); | |
450 | int retval = ReadProcessMemory (h, p, buf, size, &done); | |
451 | ||
452 | CloseHandle (h); | |
453 | return retval; | |
454 | } | |
455 | else | |
456 | return -1; | |
457 | } | |
458 | ||
76b3903d | 459 | static char startup_dir[MAXPATHLEN]; |
00b3b7b3 | 460 | |
95ed0025 | 461 | /* Get the current working directory. */ |
480b0c5b | 462 | char * |
95ed0025 RS |
463 | getwd (char *dir) |
464 | { | |
76b3903d | 465 | #if 0 |
480b0c5b GV |
466 | if (GetCurrentDirectory (MAXPATHLEN, dir) > 0) |
467 | return dir; | |
468 | return NULL; | |
76b3903d GV |
469 | #else |
470 | /* Emacs doesn't actually change directory itself, and we want to | |
471 | force our real wd to be where emacs.exe is to avoid unnecessary | |
472 | conflicts when trying to rename or delete directories. */ | |
473 | strcpy (dir, startup_dir); | |
474 | return dir; | |
475 | #endif | |
95ed0025 RS |
476 | } |
477 | ||
480b0c5b | 478 | #ifndef HAVE_SOCKETS |
95ed0025 RS |
479 | /* Emulate gethostname. */ |
480 | int | |
481 | gethostname (char *buffer, int size) | |
482 | { | |
177c0ea7 | 483 | /* NT only allows small host names, so the buffer is |
95ed0025 RS |
484 | certainly large enough. */ |
485 | return !GetComputerName (buffer, &size); | |
486 | } | |
480b0c5b | 487 | #endif /* HAVE_SOCKETS */ |
95ed0025 RS |
488 | |
489 | /* Emulate getloadavg. */ | |
490 | int | |
491 | getloadavg (double loadavg[], int nelem) | |
492 | { | |
493 | int i; | |
494 | ||
495 | /* A faithful emulation is going to have to be saved for a rainy day. */ | |
177c0ea7 | 496 | for (i = 0; i < nelem; i++) |
95ed0025 RS |
497 | { |
498 | loadavg[i] = 0.0; | |
499 | } | |
500 | return i; | |
501 | } | |
502 | ||
480b0c5b | 503 | /* Emulate getpwuid, getpwnam and others. */ |
95ed0025 | 504 | |
051fe60d GV |
505 | #define PASSWD_FIELD_SIZE 256 |
506 | ||
507 | static char the_passwd_name[PASSWD_FIELD_SIZE]; | |
508 | static char the_passwd_passwd[PASSWD_FIELD_SIZE]; | |
509 | static char the_passwd_gecos[PASSWD_FIELD_SIZE]; | |
510 | static char the_passwd_dir[PASSWD_FIELD_SIZE]; | |
511 | static char the_passwd_shell[PASSWD_FIELD_SIZE]; | |
95ed0025 | 512 | |
177c0ea7 | 513 | static struct passwd the_passwd = |
95ed0025 RS |
514 | { |
515 | the_passwd_name, | |
516 | the_passwd_passwd, | |
517 | 0, | |
518 | 0, | |
519 | 0, | |
520 | the_passwd_gecos, | |
521 | the_passwd_dir, | |
522 | the_passwd_shell, | |
523 | }; | |
524 | ||
3d19b645 LH |
525 | static struct group the_group = |
526 | { | |
527 | /* There are no groups on NT, so we just return "root" as the | |
528 | group name. */ | |
529 | "root", | |
530 | }; | |
531 | ||
177c0ea7 JB |
532 | int |
533 | getuid () | |
534 | { | |
480b0c5b GV |
535 | return the_passwd.pw_uid; |
536 | } | |
537 | ||
177c0ea7 JB |
538 | int |
539 | geteuid () | |
540 | { | |
480b0c5b GV |
541 | /* I could imagine arguing for checking to see whether the user is |
542 | in the Administrators group and returning a UID of 0 for that | |
543 | case, but I don't know how wise that would be in the long run. */ | |
177c0ea7 | 544 | return getuid (); |
480b0c5b GV |
545 | } |
546 | ||
177c0ea7 JB |
547 | int |
548 | getgid () | |
549 | { | |
480b0c5b GV |
550 | return the_passwd.pw_gid; |
551 | } | |
552 | ||
177c0ea7 JB |
553 | int |
554 | getegid () | |
555 | { | |
480b0c5b GV |
556 | return getgid (); |
557 | } | |
558 | ||
95ed0025 RS |
559 | struct passwd * |
560 | getpwuid (int uid) | |
561 | { | |
480b0c5b GV |
562 | if (uid == the_passwd.pw_uid) |
563 | return &the_passwd; | |
564 | return NULL; | |
95ed0025 RS |
565 | } |
566 | ||
3d19b645 LH |
567 | struct group * |
568 | getgrgid (gid_t gid) | |
569 | { | |
570 | return &the_group; | |
571 | } | |
572 | ||
95ed0025 RS |
573 | struct passwd * |
574 | getpwnam (char *name) | |
575 | { | |
576 | struct passwd *pw; | |
177c0ea7 | 577 | |
95ed0025 RS |
578 | pw = getpwuid (getuid ()); |
579 | if (!pw) | |
580 | return pw; | |
581 | ||
480b0c5b | 582 | if (stricmp (name, pw->pw_name)) |
95ed0025 RS |
583 | return NULL; |
584 | ||
585 | return pw; | |
586 | } | |
587 | ||
480b0c5b GV |
588 | void |
589 | init_user_info () | |
95ed0025 | 590 | { |
480b0c5b GV |
591 | /* Find the user's real name by opening the process token and |
592 | looking up the name associated with the user-sid in that token. | |
593 | ||
594 | Use the relative portion of the identifier authority value from | |
595 | the user-sid as the user id value (same for group id using the | |
596 | primary group sid from the process token). */ | |
597 | ||
634d3003 | 598 | char name[UNLEN+1], domain[1025]; |
10aabbf9 JB |
599 | DWORD length = sizeof (name), dlength = sizeof (domain), trash; |
600 | HANDLE token = NULL; | |
601 | SID_NAME_USE user_type; | |
634d3003 EZ |
602 | unsigned char buf[1024]; |
603 | TOKEN_USER user_token; | |
604 | TOKEN_PRIMARY_GROUP group_token; | |
10aabbf9 JB |
605 | |
606 | if (open_process_token (GetCurrentProcess (), TOKEN_QUERY, &token) | |
607 | && get_token_information (token, TokenUser, | |
634d3003 EZ |
608 | (PVOID)buf, sizeof (buf), &trash) |
609 | && (memcpy (&user_token, buf, sizeof (user_token)), | |
610 | lookup_account_sid (NULL, user_token.User.Sid, name, &length, | |
611 | domain, &dlength, &user_type))) | |
d1c1c3d2 | 612 | { |
480b0c5b | 613 | strcpy (the_passwd.pw_name, name); |
c617afce | 614 | /* Determine a reasonable uid value. */ |
480b0c5b GV |
615 | if (stricmp ("administrator", name) == 0) |
616 | { | |
c617afce EZ |
617 | the_passwd.pw_uid = 500; /* well-known Administrator uid */ |
618 | the_passwd.pw_gid = 513; /* well-known None gid */ | |
480b0c5b GV |
619 | } |
620 | else | |
621 | { | |
ce0ee994 EZ |
622 | /* Use the last sub-authority value of the RID, the relative |
623 | portion of the SID, as user/group ID. */ | |
c617afce | 624 | DWORD n_subauthorities = |
634d3003 | 625 | *get_sid_sub_authority_count (user_token.User.Sid); |
c617afce EZ |
626 | |
627 | if (n_subauthorities < 1) | |
628 | the_passwd.pw_uid = 0; /* the "World" RID */ | |
629 | else | |
630 | { | |
631 | the_passwd.pw_uid = | |
634d3003 | 632 | *get_sid_sub_authority (user_token.User.Sid, |
c617afce EZ |
633 | n_subauthorities - 1); |
634 | /* Restrict to conventional uid range for normal users. */ | |
635 | the_passwd.pw_uid %= 60001; | |
636 | } | |
480b0c5b GV |
637 | |
638 | /* Get group id */ | |
f60ae425 | 639 | if (get_token_information (token, TokenPrimaryGroup, |
634d3003 | 640 | (PVOID)buf, sizeof (buf), &trash)) |
480b0c5b | 641 | { |
634d3003 | 642 | memcpy (&group_token, buf, sizeof (group_token)); |
c617afce | 643 | n_subauthorities = |
634d3003 | 644 | *get_sid_sub_authority_count (group_token.PrimaryGroup); |
c617afce EZ |
645 | |
646 | if (n_subauthorities < 1) | |
647 | the_passwd.pw_gid = 0; /* the "World" RID */ | |
648 | else | |
649 | { | |
650 | the_passwd.pw_gid = | |
634d3003 | 651 | *get_sid_sub_authority (group_token.PrimaryGroup, |
c617afce EZ |
652 | n_subauthorities - 1); |
653 | /* I don't know if this is necessary, but for safety... */ | |
654 | the_passwd.pw_gid %= 60001; | |
655 | } | |
480b0c5b GV |
656 | } |
657 | else | |
658 | the_passwd.pw_gid = the_passwd.pw_uid; | |
659 | } | |
660 | } | |
661 | /* If security calls are not supported (presumably because we | |
10aabbf9 | 662 | are running under Windows 95), fallback to this. */ |
480b0c5b GV |
663 | else if (GetUserName (name, &length)) |
664 | { | |
665 | strcpy (the_passwd.pw_name, name); | |
666 | if (stricmp ("administrator", name) == 0) | |
667 | the_passwd.pw_uid = 0; | |
668 | else | |
669 | the_passwd.pw_uid = 123; | |
670 | the_passwd.pw_gid = the_passwd.pw_uid; | |
671 | } | |
672 | else | |
673 | { | |
674 | strcpy (the_passwd.pw_name, "unknown"); | |
675 | the_passwd.pw_uid = 123; | |
676 | the_passwd.pw_gid = 123; | |
d1c1c3d2 | 677 | } |
95ed0025 | 678 | |
480b0c5b GV |
679 | /* Ensure HOME and SHELL are defined. */ |
680 | if (getenv ("HOME") == NULL) | |
ca149beb | 681 | abort (); |
480b0c5b | 682 | if (getenv ("SHELL") == NULL) |
ca149beb | 683 | abort (); |
95ed0025 | 684 | |
480b0c5b GV |
685 | /* Set dir and shell from environment variables. */ |
686 | strcpy (the_passwd.pw_dir, getenv ("HOME")); | |
687 | strcpy (the_passwd.pw_shell, getenv ("SHELL")); | |
bd4a449f | 688 | |
480b0c5b GV |
689 | if (token) |
690 | CloseHandle (token); | |
95ed0025 RS |
691 | } |
692 | ||
95ed0025 | 693 | int |
480b0c5b | 694 | random () |
95ed0025 | 695 | { |
480b0c5b GV |
696 | /* rand () on NT gives us 15 random bits...hack together 30 bits. */ |
697 | return ((rand () << 15) | rand ()); | |
95ed0025 RS |
698 | } |
699 | ||
95ed0025 | 700 | void |
480b0c5b | 701 | srandom (int seed) |
95ed0025 | 702 | { |
480b0c5b | 703 | srand (seed); |
95ed0025 RS |
704 | } |
705 | ||
76b3903d | 706 | |
cbe39279 RS |
707 | /* Normalize filename by converting all path separators to |
708 | the specified separator. Also conditionally convert upper | |
709 | case path name components to lower case. */ | |
710 | ||
711 | static void | |
712 | normalize_filename (fp, path_sep) | |
713 | register char *fp; | |
714 | char path_sep; | |
715 | { | |
716 | char sep; | |
717 | char *elem; | |
718 | ||
5162ffce MB |
719 | /* Always lower-case drive letters a-z, even if the filesystem |
720 | preserves case in filenames. | |
721 | This is so filenames can be compared by string comparison | |
722 | functions that are case-sensitive. Even case-preserving filesystems | |
723 | do not distinguish case in drive letters. */ | |
724 | if (fp[1] == ':' && *fp >= 'A' && *fp <= 'Z') | |
725 | { | |
726 | *fp += 'a' - 'A'; | |
727 | fp += 2; | |
728 | } | |
729 | ||
fbd6baed | 730 | if (NILP (Vw32_downcase_file_names)) |
cbe39279 RS |
731 | { |
732 | while (*fp) | |
733 | { | |
734 | if (*fp == '/' || *fp == '\\') | |
735 | *fp = path_sep; | |
736 | fp++; | |
737 | } | |
738 | return; | |
739 | } | |
740 | ||
741 | sep = path_sep; /* convert to this path separator */ | |
742 | elem = fp; /* start of current path element */ | |
743 | ||
744 | do { | |
745 | if (*fp >= 'a' && *fp <= 'z') | |
746 | elem = 0; /* don't convert this element */ | |
747 | ||
748 | if (*fp == 0 || *fp == ':') | |
749 | { | |
750 | sep = *fp; /* restore current separator (or 0) */ | |
751 | *fp = '/'; /* after conversion of this element */ | |
752 | } | |
753 | ||
754 | if (*fp == '/' || *fp == '\\') | |
755 | { | |
756 | if (elem && elem != fp) | |
757 | { | |
758 | *fp = 0; /* temporary end of string */ | |
759 | _strlwr (elem); /* while we convert to lower case */ | |
760 | } | |
761 | *fp = sep; /* convert (or restore) path separator */ | |
762 | elem = fp + 1; /* next element starts after separator */ | |
763 | sep = path_sep; | |
764 | } | |
765 | } while (*fp++); | |
766 | } | |
767 | ||
480b0c5b | 768 | /* Destructively turn backslashes into slashes. */ |
95ed0025 | 769 | void |
480b0c5b GV |
770 | dostounix_filename (p) |
771 | register char *p; | |
95ed0025 | 772 | { |
cbe39279 | 773 | normalize_filename (p, '/'); |
95ed0025 RS |
774 | } |
775 | ||
480b0c5b | 776 | /* Destructively turn slashes into backslashes. */ |
95ed0025 | 777 | void |
480b0c5b GV |
778 | unixtodos_filename (p) |
779 | register char *p; | |
95ed0025 | 780 | { |
cbe39279 | 781 | normalize_filename (p, '\\'); |
95ed0025 RS |
782 | } |
783 | ||
480b0c5b GV |
784 | /* Remove all CR's that are followed by a LF. |
785 | (From msdos.c...probably should figure out a way to share it, | |
786 | although this code isn't going to ever change.) */ | |
35f0d482 | 787 | int |
480b0c5b GV |
788 | crlf_to_lf (n, buf) |
789 | register int n; | |
790 | register unsigned char *buf; | |
35f0d482 | 791 | { |
480b0c5b GV |
792 | unsigned char *np = buf; |
793 | unsigned char *startp = buf; | |
794 | unsigned char *endp = buf + n; | |
35f0d482 | 795 | |
480b0c5b GV |
796 | if (n == 0) |
797 | return n; | |
798 | while (buf < endp - 1) | |
95ed0025 | 799 | { |
480b0c5b GV |
800 | if (*buf == 0x0d) |
801 | { | |
802 | if (*(++buf) != 0x0a) | |
803 | *np++ = 0x0d; | |
804 | } | |
805 | else | |
806 | *np++ = *buf++; | |
95ed0025 | 807 | } |
480b0c5b GV |
808 | if (buf < endp) |
809 | *np++ = *buf++; | |
810 | return np - startp; | |
95ed0025 RS |
811 | } |
812 | ||
76b3903d GV |
813 | /* Parse the root part of file name, if present. Return length and |
814 | optionally store pointer to char after root. */ | |
815 | static int | |
816 | parse_root (char * name, char ** pPath) | |
817 | { | |
818 | char * start = name; | |
819 | ||
820 | if (name == NULL) | |
821 | return 0; | |
822 | ||
823 | /* find the root name of the volume if given */ | |
824 | if (isalpha (name[0]) && name[1] == ':') | |
825 | { | |
826 | /* skip past drive specifier */ | |
827 | name += 2; | |
828 | if (IS_DIRECTORY_SEP (name[0])) | |
829 | name++; | |
830 | } | |
831 | else if (IS_DIRECTORY_SEP (name[0]) && IS_DIRECTORY_SEP (name[1])) | |
832 | { | |
833 | int slashes = 2; | |
834 | name += 2; | |
835 | do | |
836 | { | |
837 | if (IS_DIRECTORY_SEP (*name) && --slashes == 0) | |
838 | break; | |
839 | name++; | |
840 | } | |
841 | while ( *name ); | |
842 | if (IS_DIRECTORY_SEP (name[0])) | |
843 | name++; | |
844 | } | |
845 | ||
846 | if (pPath) | |
847 | *pPath = name; | |
848 | ||
849 | return name - start; | |
850 | } | |
851 | ||
852 | /* Get long base name for name; name is assumed to be absolute. */ | |
853 | static int | |
854 | get_long_basename (char * name, char * buf, int size) | |
855 | { | |
856 | WIN32_FIND_DATA find_data; | |
857 | HANDLE dir_handle; | |
858 | int len = 0; | |
859 | ||
9ab8560d | 860 | /* must be valid filename, no wild cards or other invalid characters */ |
22189f79 | 861 | if (_mbspbrk (name, "*?|<>\"")) |
bb1584c8 RS |
862 | return 0; |
863 | ||
76b3903d GV |
864 | dir_handle = FindFirstFile (name, &find_data); |
865 | if (dir_handle != INVALID_HANDLE_VALUE) | |
866 | { | |
867 | if ((len = strlen (find_data.cFileName)) < size) | |
868 | memcpy (buf, find_data.cFileName, len + 1); | |
869 | else | |
870 | len = 0; | |
871 | FindClose (dir_handle); | |
872 | } | |
873 | return len; | |
874 | } | |
875 | ||
876 | /* Get long name for file, if possible (assumed to be absolute). */ | |
877 | BOOL | |
878 | w32_get_long_filename (char * name, char * buf, int size) | |
879 | { | |
880 | char * o = buf; | |
881 | char * p; | |
882 | char * q; | |
883 | char full[ MAX_PATH ]; | |
884 | int len; | |
885 | ||
886 | len = strlen (name); | |
887 | if (len >= MAX_PATH) | |
888 | return FALSE; | |
889 | ||
890 | /* Use local copy for destructive modification. */ | |
891 | memcpy (full, name, len+1); | |
892 | unixtodos_filename (full); | |
893 | ||
894 | /* Copy root part verbatim. */ | |
895 | len = parse_root (full, &p); | |
896 | memcpy (o, full, len); | |
897 | o += len; | |
4f8ac0b2 | 898 | *o = '\0'; |
76b3903d GV |
899 | size -= len; |
900 | ||
4f8ac0b2 | 901 | while (p != NULL && *p) |
76b3903d GV |
902 | { |
903 | q = p; | |
904 | p = strchr (q, '\\'); | |
905 | if (p) *p = '\0'; | |
906 | len = get_long_basename (full, o, size); | |
907 | if (len > 0) | |
908 | { | |
909 | o += len; | |
910 | size -= len; | |
911 | if (p != NULL) | |
912 | { | |
913 | *p++ = '\\'; | |
914 | if (size < 2) | |
915 | return FALSE; | |
916 | *o++ = '\\'; | |
917 | size--; | |
918 | *o = '\0'; | |
919 | } | |
920 | } | |
921 | else | |
922 | return FALSE; | |
923 | } | |
76b3903d GV |
924 | |
925 | return TRUE; | |
926 | } | |
927 | ||
9d3355d1 GV |
928 | int |
929 | is_unc_volume (const char *filename) | |
930 | { | |
931 | const char *ptr = filename; | |
932 | ||
933 | if (!IS_DIRECTORY_SEP (ptr[0]) || !IS_DIRECTORY_SEP (ptr[1]) || !ptr[2]) | |
934 | return 0; | |
935 | ||
22189f79 | 936 | if (_mbspbrk (ptr + 2, "*?|<>\"\\/")) |
9d3355d1 GV |
937 | return 0; |
938 | ||
939 | return 1; | |
940 | } | |
76b3903d | 941 | |
95ed0025 RS |
942 | /* Routines that are no-ops on NT but are defined to get Emacs to compile. */ |
943 | ||
177c0ea7 JB |
944 | int |
945 | sigsetmask (int signal_mask) | |
946 | { | |
95ed0025 RS |
947 | return 0; |
948 | } | |
949 | ||
177c0ea7 JB |
950 | int |
951 | sigmask (int sig) | |
952 | { | |
8f900f6e AI |
953 | return 0; |
954 | } | |
955 | ||
177c0ea7 JB |
956 | int |
957 | sigblock (int sig) | |
958 | { | |
95ed0025 RS |
959 | return 0; |
960 | } | |
961 | ||
177c0ea7 JB |
962 | int |
963 | sigunblock (int sig) | |
964 | { | |
8f900f6e AI |
965 | return 0; |
966 | } | |
967 | ||
177c0ea7 JB |
968 | int |
969 | setpgrp (int pid, int gid) | |
970 | { | |
95ed0025 RS |
971 | return 0; |
972 | } | |
973 | ||
177c0ea7 JB |
974 | int |
975 | alarm (int seconds) | |
976 | { | |
95ed0025 RS |
977 | return 0; |
978 | } | |
979 | ||
480b0c5b | 980 | #define REG_ROOT "SOFTWARE\\GNU\\Emacs" |
f332b293 | 981 | |
177c0ea7 | 982 | LPBYTE |
fbd6baed | 983 | w32_get_resource (key, lpdwtype) |
f332b293 GV |
984 | char *key; |
985 | LPDWORD lpdwtype; | |
986 | { | |
987 | LPBYTE lpvalue; | |
988 | HKEY hrootkey = NULL; | |
989 | DWORD cbData; | |
177c0ea7 JB |
990 | |
991 | /* Check both the current user and the local machine to see if | |
f332b293 | 992 | we have any resources. */ |
177c0ea7 | 993 | |
f332b293 GV |
994 | if (RegOpenKeyEx (HKEY_CURRENT_USER, REG_ROOT, 0, KEY_READ, &hrootkey) == ERROR_SUCCESS) |
995 | { | |
996 | lpvalue = NULL; | |
997 | ||
177c0ea7 JB |
998 | if (RegQueryValueEx (hrootkey, key, NULL, NULL, NULL, &cbData) == ERROR_SUCCESS |
999 | && (lpvalue = (LPBYTE) xmalloc (cbData)) != NULL | |
f332b293 GV |
1000 | && RegQueryValueEx (hrootkey, key, NULL, lpdwtype, lpvalue, &cbData) == ERROR_SUCCESS) |
1001 | { | |
4da4d9bb | 1002 | RegCloseKey (hrootkey); |
f332b293 GV |
1003 | return (lpvalue); |
1004 | } | |
1005 | ||
1006 | if (lpvalue) xfree (lpvalue); | |
177c0ea7 | 1007 | |
f332b293 | 1008 | RegCloseKey (hrootkey); |
177c0ea7 JB |
1009 | } |
1010 | ||
f332b293 GV |
1011 | if (RegOpenKeyEx (HKEY_LOCAL_MACHINE, REG_ROOT, 0, KEY_READ, &hrootkey) == ERROR_SUCCESS) |
1012 | { | |
1013 | lpvalue = NULL; | |
177c0ea7 | 1014 | |
76b3903d GV |
1015 | if (RegQueryValueEx (hrootkey, key, NULL, NULL, NULL, &cbData) == ERROR_SUCCESS |
1016 | && (lpvalue = (LPBYTE) xmalloc (cbData)) != NULL | |
1017 | && RegQueryValueEx (hrootkey, key, NULL, lpdwtype, lpvalue, &cbData) == ERROR_SUCCESS) | |
f332b293 | 1018 | { |
4da4d9bb | 1019 | RegCloseKey (hrootkey); |
f332b293 GV |
1020 | return (lpvalue); |
1021 | } | |
177c0ea7 | 1022 | |
f332b293 | 1023 | if (lpvalue) xfree (lpvalue); |
177c0ea7 | 1024 | |
f332b293 | 1025 | RegCloseKey (hrootkey); |
177c0ea7 JB |
1026 | } |
1027 | ||
f332b293 GV |
1028 | return (NULL); |
1029 | } | |
1030 | ||
75b08edb GV |
1031 | char *get_emacs_configuration (void); |
1032 | extern Lisp_Object Vsystem_configuration; | |
1033 | ||
f332b293 | 1034 | void |
aa7b87b0 | 1035 | init_environment (char ** argv) |
f332b293 | 1036 | { |
b3308d2e KH |
1037 | static const char * const tempdirs[] = { |
1038 | "$TMPDIR", "$TEMP", "$TMP", "c:/" | |
1039 | }; | |
2d5324c5 | 1040 | |
b3308d2e | 1041 | int i; |
2d5324c5 | 1042 | |
b3308d2e KH |
1043 | const int imax = sizeof (tempdirs) / sizeof (tempdirs[0]); |
1044 | ||
1045 | /* Make sure they have a usable $TMPDIR. Many Emacs functions use | |
1046 | temporary files and assume "/tmp" if $TMPDIR is unset, which | |
1047 | will break on DOS/Windows. Refuse to work if we cannot find | |
1048 | a directory, not even "c:/", usable for that purpose. */ | |
1049 | for (i = 0; i < imax ; i++) | |
1050 | { | |
1051 | const char *tmp = tempdirs[i]; | |
1052 | ||
1053 | if (*tmp == '$') | |
1054 | tmp = getenv (tmp + 1); | |
1055 | /* Note that `access' can lie to us if the directory resides on a | |
1056 | read-only filesystem, like CD-ROM or a write-protected floppy. | |
1057 | The only way to be really sure is to actually create a file and | |
1058 | see if it succeeds. But I think that's too much to ask. */ | |
a302c7ae | 1059 | if (tmp && _access (tmp, D_OK) == 0) |
b3308d2e KH |
1060 | { |
1061 | char * var = alloca (strlen (tmp) + 8); | |
1062 | sprintf (var, "TMPDIR=%s", tmp); | |
aca583b2 | 1063 | _putenv (strdup (var)); |
b3308d2e KH |
1064 | break; |
1065 | } | |
1066 | } | |
1067 | if (i >= imax) | |
1068 | cmd_error_internal | |
1069 | (Fcons (Qerror, | |
1070 | Fcons (build_string ("no usable temporary directories found!!"), | |
1071 | Qnil)), | |
1072 | "While setting TMPDIR: "); | |
1073 | ||
ca149beb AI |
1074 | /* Check for environment variables and use registry settings if they |
1075 | don't exist. Fallback on default values where applicable. */ | |
f332b293 | 1076 | { |
480b0c5b GV |
1077 | int i; |
1078 | LPBYTE lpval; | |
1079 | DWORD dwType; | |
69fb0241 | 1080 | char locale_name[32]; |
2d5324c5 JR |
1081 | struct stat ignored; |
1082 | char default_home[MAX_PATH]; | |
f332b293 | 1083 | |
e00b99c8 | 1084 | static const struct env_entry |
ca149beb AI |
1085 | { |
1086 | char * name; | |
1087 | char * def_value; | |
e00b99c8 | 1088 | } dflt_envvars[] = |
ca149beb AI |
1089 | { |
1090 | {"HOME", "C:/"}, | |
1091 | {"PRELOAD_WINSOCK", NULL}, | |
1092 | {"emacs_dir", "C:/emacs"}, | |
cc14250a | 1093 | {"EMACSLOADPATH", "%emacs_dir%/site-lisp;%emacs_dir%/../site-lisp;%emacs_dir%/lisp;%emacs_dir%/leim"}, |
ca149beb AI |
1094 | {"SHELL", "%emacs_dir%/bin/cmdproxy.exe"}, |
1095 | {"EMACSDATA", "%emacs_dir%/etc"}, | |
1096 | {"EMACSPATH", "%emacs_dir%/bin"}, | |
76b3903d | 1097 | /* We no longer set INFOPATH because Info-default-directory-list |
ca149beb AI |
1098 | is then ignored. */ |
1099 | /* {"INFOPATH", "%emacs_dir%/info"}, */ | |
1100 | {"EMACSDOC", "%emacs_dir%/etc"}, | |
69fb0241 JR |
1101 | {"TERM", "cmd"}, |
1102 | {"LANG", NULL}, | |
480b0c5b GV |
1103 | }; |
1104 | ||
e00b99c8 EZ |
1105 | #define N_ENV_VARS sizeof(dflt_envvars)/sizeof(dflt_envvars[0]) |
1106 | ||
1107 | /* We need to copy dflt_envvars[] and work on the copy because we | |
1108 | don't want the dumped Emacs to inherit the values of | |
1109 | environment variables we saw during dumping (which could be on | |
1110 | a different system). The defaults above must be left intact. */ | |
1111 | struct env_entry env_vars[N_ENV_VARS]; | |
1112 | ||
1113 | for (i = 0; i < N_ENV_VARS; i++) | |
1114 | env_vars[i] = dflt_envvars[i]; | |
1115 | ||
2d5324c5 JR |
1116 | /* For backwards compatibility, check if a .emacs file exists in C:/ |
1117 | If not, then we can try to default to the appdata directory under the | |
1118 | user's profile, which is more likely to be writable. */ | |
1119 | if (stat ("C:/.emacs", &ignored) < 0) | |
1120 | { | |
1121 | HRESULT profile_result; | |
1122 | /* Dynamically load ShGetFolderPath, as it won't exist on versions | |
1123 | of Windows 95 and NT4 that have not been updated to include | |
1124 | MSIE 5. Also we don't link with shell32.dll by default. */ | |
1125 | HMODULE shell32_dll; | |
1126 | ShGetFolderPath_fn get_folder_path; | |
1127 | shell32_dll = GetModuleHandle ("shell32.dll"); | |
1128 | get_folder_path = (ShGetFolderPath_fn) | |
1129 | GetProcAddress (shell32_dll, "SHGetFolderPathA"); | |
1130 | ||
1131 | if (get_folder_path != NULL) | |
1132 | { | |
1133 | profile_result = get_folder_path (NULL, CSIDL_APPDATA, NULL, | |
1134 | 0, default_home); | |
1135 | ||
1136 | /* If we can't get the appdata dir, revert to old behaviour. */ | |
1137 | if (profile_result == S_OK) | |
1138 | env_vars[0].def_value = default_home; | |
1139 | } | |
1140 | ||
1141 | /* Unload shell32.dll, it is not needed anymore. */ | |
1142 | FreeLibrary (shell32_dll); | |
1143 | } | |
1144 | ||
69fb0241 JR |
1145 | /* Get default locale info and use it for LANG. */ |
1146 | if (GetLocaleInfo (LOCALE_USER_DEFAULT, | |
1147 | LOCALE_SABBREVLANGNAME | LOCALE_USE_CP_ACP, | |
1148 | locale_name, sizeof (locale_name))) | |
1149 | { | |
e00b99c8 | 1150 | for (i = 0; i < N_ENV_VARS; i++) |
69fb0241 JR |
1151 | { |
1152 | if (strcmp (env_vars[i].name, "LANG") == 0) | |
1153 | { | |
1154 | env_vars[i].def_value = locale_name; | |
1155 | break; | |
1156 | } | |
1157 | } | |
1158 | } | |
1159 | ||
ca149beb AI |
1160 | #define SET_ENV_BUF_SIZE (4 * MAX_PATH) /* to cover EMACSLOADPATH */ |
1161 | ||
1162 | /* Treat emacs_dir specially: set it unconditionally based on our | |
1163 | location, if it appears that we are running from the bin subdir | |
1164 | of a standard installation. */ | |
1165 | { | |
1166 | char *p; | |
1167 | char modname[MAX_PATH]; | |
1168 | ||
1169 | if (!GetModuleFileName (NULL, modname, MAX_PATH)) | |
1170 | abort (); | |
1171 | if ((p = strrchr (modname, '\\')) == NULL) | |
1172 | abort (); | |
1173 | *p = 0; | |
1174 | ||
1175 | if ((p = strrchr (modname, '\\')) && stricmp (p, "\\bin") == 0) | |
1176 | { | |
1177 | char buf[SET_ENV_BUF_SIZE]; | |
1178 | ||
1179 | *p = 0; | |
1180 | for (p = modname; *p; p++) | |
1181 | if (*p == '\\') *p = '/'; | |
177c0ea7 | 1182 | |
ca149beb | 1183 | _snprintf (buf, sizeof(buf)-1, "emacs_dir=%s", modname); |
a302c7ae | 1184 | _putenv (strdup (buf)); |
ca149beb | 1185 | } |
950090be JR |
1186 | /* Handle running emacs from the build directory: src/oo-spd/i386/ */ |
1187 | ||
1188 | /* FIXME: should use substring of get_emacs_configuration (). | |
1189 | But I don't think the Windows build supports alpha, mips etc | |
1190 | anymore, so have taken the easy option for now. */ | |
1191 | else if (p && stricmp (p, "\\i386") == 0) | |
1192 | { | |
1193 | *p = 0; | |
1194 | p = strrchr (modname, '\\'); | |
1195 | if (p != NULL) | |
1196 | { | |
1197 | *p = 0; | |
1198 | p = strrchr (modname, '\\'); | |
1199 | if (p && stricmp (p, "\\src") == 0) | |
1200 | { | |
1201 | char buf[SET_ENV_BUF_SIZE]; | |
1202 | ||
1203 | *p = 0; | |
1204 | for (p = modname; *p; p++) | |
1205 | if (*p == '\\') *p = '/'; | |
1206 | ||
1207 | _snprintf (buf, sizeof(buf)-1, "emacs_dir=%s", modname); | |
1208 | _putenv (strdup (buf)); | |
1209 | } | |
1210 | } | |
1211 | } | |
ca149beb AI |
1212 | } |
1213 | ||
e00b99c8 | 1214 | for (i = 0; i < N_ENV_VARS; i++) |
f332b293 | 1215 | { |
ca149beb | 1216 | if (!getenv (env_vars[i].name)) |
480b0c5b | 1217 | { |
ca149beb | 1218 | int dont_free = 0; |
480b0c5b | 1219 | |
aa5ee2a3 JB |
1220 | if ((lpval = w32_get_resource (env_vars[i].name, &dwType)) == NULL |
1221 | /* Also ignore empty environment variables. */ | |
1222 | || *lpval == 0) | |
ca149beb | 1223 | { |
14c71d8b | 1224 | if (lpval) xfree (lpval); |
ca149beb AI |
1225 | lpval = env_vars[i].def_value; |
1226 | dwType = REG_EXPAND_SZ; | |
1227 | dont_free = 1; | |
480b0c5b | 1228 | } |
ca149beb AI |
1229 | |
1230 | if (lpval) | |
480b0c5b | 1231 | { |
892eb237 | 1232 | char buf1[SET_ENV_BUF_SIZE], buf2[SET_ENV_BUF_SIZE]; |
ca149beb | 1233 | |
892eb237 EZ |
1234 | if (dwType == REG_EXPAND_SZ) |
1235 | ExpandEnvironmentStrings ((LPSTR) lpval, buf1, sizeof(buf1)); | |
ca149beb | 1236 | else if (dwType == REG_SZ) |
892eb237 EZ |
1237 | strcpy (buf1, lpval); |
1238 | if (dwType == REG_EXPAND_SZ || dwType == REG_SZ) | |
ca149beb | 1239 | { |
892eb237 EZ |
1240 | _snprintf (buf2, sizeof(buf2)-1, "%s=%s", env_vars[i].name, |
1241 | buf1); | |
1242 | _putenv (strdup (buf2)); | |
ca149beb | 1243 | } |
f332b293 | 1244 | |
ca149beb AI |
1245 | if (!dont_free) |
1246 | xfree (lpval); | |
1247 | } | |
480b0c5b GV |
1248 | } |
1249 | } | |
1250 | } | |
1251 | ||
75b08edb GV |
1252 | /* Rebuild system configuration to reflect invoking system. */ |
1253 | Vsystem_configuration = build_string (EMACS_CONFIGURATION); | |
1254 | ||
76b3903d GV |
1255 | /* Another special case: on NT, the PATH variable is actually named |
1256 | "Path" although cmd.exe (perhaps NT itself) arranges for | |
1257 | environment variable lookup and setting to be case insensitive. | |
1258 | However, Emacs assumes a fully case sensitive environment, so we | |
1259 | need to change "Path" to "PATH" to match the expectations of | |
1260 | various elisp packages. We do this by the sneaky method of | |
1261 | modifying the string in the C runtime environ entry. | |
1262 | ||
1263 | The same applies to COMSPEC. */ | |
1264 | { | |
1265 | char ** envp; | |
1266 | ||
1267 | for (envp = environ; *envp; envp++) | |
1268 | if (_strnicmp (*envp, "PATH=", 5) == 0) | |
1269 | memcpy (*envp, "PATH=", 5); | |
1270 | else if (_strnicmp (*envp, "COMSPEC=", 8) == 0) | |
1271 | memcpy (*envp, "COMSPEC=", 8); | |
1272 | } | |
1273 | ||
1274 | /* Remember the initial working directory for getwd, then make the | |
1275 | real wd be the location of emacs.exe to avoid conflicts when | |
1276 | renaming or deleting directories. (We also don't call chdir when | |
1277 | running subprocesses for the same reason.) */ | |
1278 | if (!GetCurrentDirectory (MAXPATHLEN, startup_dir)) | |
1279 | abort (); | |
1280 | ||
1281 | { | |
1282 | char *p; | |
aa7b87b0 | 1283 | static char modname[MAX_PATH]; |
76b3903d GV |
1284 | |
1285 | if (!GetModuleFileName (NULL, modname, MAX_PATH)) | |
1286 | abort (); | |
1287 | if ((p = strrchr (modname, '\\')) == NULL) | |
1288 | abort (); | |
1289 | *p = 0; | |
1290 | ||
1291 | SetCurrentDirectory (modname); | |
aa7b87b0 AI |
1292 | |
1293 | /* Ensure argv[0] has the full path to Emacs. */ | |
1294 | *p = '\\'; | |
1295 | argv[0] = modname; | |
76b3903d GV |
1296 | } |
1297 | ||
20af4831 JR |
1298 | /* Determine if there is a middle mouse button, to allow parse_button |
1299 | to decide whether right mouse events should be mouse-2 or | |
1300 | mouse-3. */ | |
e0c181dd | 1301 | w32_num_mouse_buttons = GetSystemMetrics (SM_CMOUSEBUTTONS); |
20af4831 | 1302 | |
480b0c5b GV |
1303 | init_user_info (); |
1304 | } | |
1305 | ||
bf794306 EZ |
1306 | char * |
1307 | emacs_root_dir (void) | |
1308 | { | |
1309 | static char root_dir[FILENAME_MAX]; | |
1310 | const char *p; | |
1311 | ||
1312 | p = getenv ("emacs_dir"); | |
1313 | if (p == NULL) | |
1314 | abort (); | |
1315 | strcpy (root_dir, p); | |
1316 | root_dir[parse_root (root_dir, NULL)] = '\0'; | |
1317 | dostounix_filename (root_dir); | |
1318 | return root_dir; | |
1319 | } | |
1320 | ||
480b0c5b GV |
1321 | /* We don't have scripts to automatically determine the system configuration |
1322 | for Emacs before it's compiled, and we don't want to have to make the | |
1323 | user enter it, so we define EMACS_CONFIGURATION to invoke this runtime | |
1324 | routine. */ | |
1325 | ||
480b0c5b GV |
1326 | char * |
1327 | get_emacs_configuration (void) | |
1328 | { | |
1329 | char *arch, *oem, *os; | |
c5247da2 | 1330 | int build_num; |
a302c7ae | 1331 | static char configuration_buffer[32]; |
480b0c5b GV |
1332 | |
1333 | /* Determine the processor type. */ | |
177c0ea7 | 1334 | switch (get_processor_type ()) |
480b0c5b GV |
1335 | { |
1336 | ||
1337 | #ifdef PROCESSOR_INTEL_386 | |
1338 | case PROCESSOR_INTEL_386: | |
1339 | case PROCESSOR_INTEL_486: | |
1340 | case PROCESSOR_INTEL_PENTIUM: | |
1341 | arch = "i386"; | |
1342 | break; | |
1343 | #endif | |
1344 | ||
480b0c5b GV |
1345 | #ifdef PROCESSOR_MIPS_R2000 |
1346 | case PROCESSOR_MIPS_R2000: | |
1347 | case PROCESSOR_MIPS_R3000: | |
1348 | case PROCESSOR_MIPS_R4000: | |
1349 | arch = "mips"; | |
1350 | break; | |
1351 | #endif | |
1352 | ||
1353 | #ifdef PROCESSOR_ALPHA_21064 | |
1354 | case PROCESSOR_ALPHA_21064: | |
1355 | arch = "alpha"; | |
1356 | break; | |
1357 | #endif | |
1358 | ||
1359 | default: | |
1360 | arch = "unknown"; | |
1361 | break; | |
f332b293 | 1362 | } |
480b0c5b | 1363 | |
a302c7ae AI |
1364 | /* Use the OEM field to reflect the compiler/library combination. */ |
1365 | #ifdef _MSC_VER | |
1366 | #define COMPILER_NAME "msvc" | |
1367 | #else | |
1368 | #ifdef __GNUC__ | |
1369 | #define COMPILER_NAME "mingw" | |
1370 | #else | |
1371 | #define COMPILER_NAME "unknown" | |
1372 | #endif | |
1373 | #endif | |
1374 | oem = COMPILER_NAME; | |
480b0c5b | 1375 | |
c5247da2 GV |
1376 | switch (osinfo_cache.dwPlatformId) { |
1377 | case VER_PLATFORM_WIN32_NT: | |
1378 | os = "nt"; | |
1379 | build_num = osinfo_cache.dwBuildNumber; | |
1380 | break; | |
1381 | case VER_PLATFORM_WIN32_WINDOWS: | |
1382 | if (osinfo_cache.dwMinorVersion == 0) { | |
1383 | os = "windows95"; | |
1384 | } else { | |
1385 | os = "windows98"; | |
1386 | } | |
1387 | build_num = LOWORD (osinfo_cache.dwBuildNumber); | |
1388 | break; | |
1389 | case VER_PLATFORM_WIN32s: | |
1390 | /* Not supported, should not happen. */ | |
1391 | os = "windows32s"; | |
1392 | build_num = LOWORD (osinfo_cache.dwBuildNumber); | |
1393 | break; | |
1394 | default: | |
1395 | os = "unknown"; | |
1396 | build_num = 0; | |
1397 | break; | |
1398 | } | |
1399 | ||
1400 | if (osinfo_cache.dwPlatformId == VER_PLATFORM_WIN32_NT) { | |
1401 | sprintf (configuration_buffer, "%s-%s-%s%d.%d.%d", arch, oem, os, | |
1402 | get_w32_major_version (), get_w32_minor_version (), build_num); | |
1403 | } else { | |
1404 | sprintf (configuration_buffer, "%s-%s-%s.%d", arch, oem, os, build_num); | |
1405 | } | |
480b0c5b | 1406 | |
480b0c5b | 1407 | return configuration_buffer; |
f332b293 GV |
1408 | } |
1409 | ||
a302c7ae AI |
1410 | char * |
1411 | get_emacs_configuration_options (void) | |
1412 | { | |
1413 | static char options_buffer[256]; | |
1414 | ||
1415 | /* Work out the effective configure options for this build. */ | |
1416 | #ifdef _MSC_VER | |
1417 | #define COMPILER_VERSION "--with-msvc (%d.%02d)", _MSC_VER / 100, _MSC_VER % 100 | |
1418 | #else | |
1419 | #ifdef __GNUC__ | |
1420 | #define COMPILER_VERSION "--with-gcc (%d.%d)", __GNUC__, __GNUC_MINOR__ | |
1421 | #else | |
1422 | #define COMPILER_VERSION "" | |
1423 | #endif | |
1424 | #endif | |
1425 | ||
1426 | sprintf (options_buffer, COMPILER_VERSION); | |
1427 | #ifdef EMACSDEBUG | |
1428 | strcat (options_buffer, " --no-opt"); | |
1429 | #endif | |
1430 | #ifdef USER_CFLAGS | |
1431 | strcat (options_buffer, " --cflags"); | |
1432 | strcat (options_buffer, USER_CFLAGS); | |
1433 | #endif | |
1434 | #ifdef USER_LDFLAGS | |
1435 | strcat (options_buffer, " --ldflags"); | |
1436 | strcat (options_buffer, USER_LDFLAGS); | |
1437 | #endif | |
1438 | return options_buffer; | |
1439 | } | |
1440 | ||
1441 | ||
35f0d482 KH |
1442 | #include <sys/timeb.h> |
1443 | ||
1444 | /* Emulate gettimeofday (Ulrich Leodolter, 1/11/95). */ | |
177c0ea7 | 1445 | void |
35f0d482 KH |
1446 | gettimeofday (struct timeval *tv, struct timezone *tz) |
1447 | { | |
6e602566 | 1448 | struct _timeb tb; |
35f0d482 KH |
1449 | _ftime (&tb); |
1450 | ||
1451 | tv->tv_sec = tb.time; | |
1452 | tv->tv_usec = tb.millitm * 1000L; | |
177c0ea7 | 1453 | if (tz) |
35f0d482 KH |
1454 | { |
1455 | tz->tz_minuteswest = tb.timezone; /* minutes west of Greenwich */ | |
1456 | tz->tz_dsttime = tb.dstflag; /* type of dst correction */ | |
1457 | } | |
1458 | } | |
35f0d482 | 1459 | |
480b0c5b | 1460 | /* ------------------------------------------------------------------------- */ |
fbd6baed | 1461 | /* IO support and wrapper functions for W32 API. */ |
480b0c5b | 1462 | /* ------------------------------------------------------------------------- */ |
95ed0025 | 1463 | |
480b0c5b | 1464 | /* Place a wrapper around the MSVC version of ctime. It returns NULL |
177c0ea7 | 1465 | on network directories, so we handle that case here. |
480b0c5b GV |
1466 | (Ulrich Leodolter, 1/11/95). */ |
1467 | char * | |
1468 | sys_ctime (const time_t *t) | |
1469 | { | |
1470 | char *str = (char *) ctime (t); | |
1471 | return (str ? str : "Sun Jan 01 00:00:00 1970"); | |
1472 | } | |
1473 | ||
1474 | /* Emulate sleep...we could have done this with a define, but that | |
1475 | would necessitate including windows.h in the files that used it. | |
1476 | This is much easier. */ | |
1477 | void | |
1478 | sys_sleep (int seconds) | |
1479 | { | |
1480 | Sleep (seconds * 1000); | |
1481 | } | |
1482 | ||
76b3903d | 1483 | /* Internal MSVC functions for low-level descriptor munging */ |
480b0c5b GV |
1484 | extern int __cdecl _set_osfhnd (int fd, long h); |
1485 | extern int __cdecl _free_osfhnd (int fd); | |
1486 | ||
1487 | /* parallel array of private info on file handles */ | |
1488 | filedesc fd_info [ MAXDESC ]; | |
1489 | ||
76b3903d GV |
1490 | typedef struct volume_info_data { |
1491 | struct volume_info_data * next; | |
1492 | ||
1493 | /* time when info was obtained */ | |
1494 | DWORD timestamp; | |
1495 | ||
1496 | /* actual volume info */ | |
1497 | char * root_dir; | |
480b0c5b GV |
1498 | DWORD serialnum; |
1499 | DWORD maxcomp; | |
1500 | DWORD flags; | |
76b3903d GV |
1501 | char * name; |
1502 | char * type; | |
1503 | } volume_info_data; | |
1504 | ||
1505 | /* Global referenced by various functions. */ | |
1506 | static volume_info_data volume_info; | |
1507 | ||
1508 | /* Vector to indicate which drives are local and fixed (for which cached | |
1509 | data never expires). */ | |
1510 | static BOOL fixed_drives[26]; | |
1511 | ||
1512 | /* Consider cached volume information to be stale if older than 10s, | |
1513 | at least for non-local drives. Info for fixed drives is never stale. */ | |
1514 | #define DRIVE_INDEX( c ) ( (c) <= 'Z' ? (c) - 'A' : (c) - 'a' ) | |
1515 | #define VOLINFO_STILL_VALID( root_dir, info ) \ | |
1516 | ( ( isalpha (root_dir[0]) && \ | |
1517 | fixed_drives[ DRIVE_INDEX (root_dir[0]) ] ) \ | |
1518 | || GetTickCount () - info->timestamp < 10000 ) | |
1519 | ||
1520 | /* Cache support functions. */ | |
1521 | ||
1522 | /* Simple linked list with linear search is sufficient. */ | |
1523 | static volume_info_data *volume_cache = NULL; | |
1524 | ||
1525 | static volume_info_data * | |
1526 | lookup_volume_info (char * root_dir) | |
1527 | { | |
1528 | volume_info_data * info; | |
1529 | ||
1530 | for (info = volume_cache; info; info = info->next) | |
1531 | if (stricmp (info->root_dir, root_dir) == 0) | |
1532 | break; | |
1533 | return info; | |
1534 | } | |
1535 | ||
1536 | static void | |
1537 | add_volume_info (char * root_dir, volume_info_data * info) | |
1538 | { | |
a302c7ae | 1539 | info->root_dir = xstrdup (root_dir); |
76b3903d GV |
1540 | info->next = volume_cache; |
1541 | volume_cache = info; | |
1542 | } | |
1543 | ||
1544 | ||
1545 | /* Wrapper for GetVolumeInformation, which uses caching to avoid | |
1546 | performance penalty (~2ms on 486 for local drives, 7.5ms for local | |
1547 | cdrom drive, ~5-10ms or more for remote drives on LAN). */ | |
1548 | volume_info_data * | |
1549 | GetCachedVolumeInformation (char * root_dir) | |
1550 | { | |
1551 | volume_info_data * info; | |
1552 | char default_root[ MAX_PATH ]; | |
1553 | ||
1554 | /* NULL for root_dir means use root from current directory. */ | |
1555 | if (root_dir == NULL) | |
1556 | { | |
1557 | if (GetCurrentDirectory (MAX_PATH, default_root) == 0) | |
1558 | return NULL; | |
1559 | parse_root (default_root, &root_dir); | |
1560 | *root_dir = 0; | |
1561 | root_dir = default_root; | |
1562 | } | |
1563 | ||
1564 | /* Local fixed drives can be cached permanently. Removable drives | |
1565 | cannot be cached permanently, since the volume name and serial | |
1566 | number (if nothing else) can change. Remote drives should be | |
1567 | treated as if they are removable, since there is no sure way to | |
1568 | tell whether they are or not. Also, the UNC association of drive | |
1569 | letters mapped to remote volumes can be changed at any time (even | |
1570 | by other processes) without notice. | |
177c0ea7 | 1571 | |
76b3903d GV |
1572 | As a compromise, so we can benefit from caching info for remote |
1573 | volumes, we use a simple expiry mechanism to invalidate cache | |
1574 | entries that are more than ten seconds old. */ | |
1575 | ||
1576 | #if 0 | |
1577 | /* No point doing this, because WNetGetConnection is even slower than | |
1578 | GetVolumeInformation, consistently taking ~50ms on a 486 (FWIW, | |
1579 | GetDriveType is about the only call of this type which does not | |
1580 | involve network access, and so is extremely quick). */ | |
1581 | ||
1582 | /* Map drive letter to UNC if remote. */ | |
1583 | if ( isalpha( root_dir[0] ) && !fixed[ DRIVE_INDEX( root_dir[0] ) ] ) | |
1584 | { | |
1585 | char remote_name[ 256 ]; | |
1586 | char drive[3] = { root_dir[0], ':' }; | |
1587 | ||
1588 | if (WNetGetConnection (drive, remote_name, sizeof (remote_name)) | |
1589 | == NO_ERROR) | |
1590 | /* do something */ ; | |
1591 | } | |
1592 | #endif | |
1593 | ||
1594 | info = lookup_volume_info (root_dir); | |
1595 | ||
1596 | if (info == NULL || ! VOLINFO_STILL_VALID (root_dir, info)) | |
1597 | { | |
1598 | char name[ 256 ]; | |
1599 | DWORD serialnum; | |
1600 | DWORD maxcomp; | |
1601 | DWORD flags; | |
1602 | char type[ 256 ]; | |
1603 | ||
1604 | /* Info is not cached, or is stale. */ | |
1605 | if (!GetVolumeInformation (root_dir, | |
1606 | name, sizeof (name), | |
1607 | &serialnum, | |
1608 | &maxcomp, | |
1609 | &flags, | |
1610 | type, sizeof (type))) | |
1611 | return NULL; | |
1612 | ||
1613 | /* Cache the volume information for future use, overwriting existing | |
1614 | entry if present. */ | |
1615 | if (info == NULL) | |
1616 | { | |
1617 | info = (volume_info_data *) xmalloc (sizeof (volume_info_data)); | |
1618 | add_volume_info (root_dir, info); | |
1619 | } | |
1620 | else | |
1621 | { | |
a302c7ae AI |
1622 | xfree (info->name); |
1623 | xfree (info->type); | |
76b3903d GV |
1624 | } |
1625 | ||
a302c7ae | 1626 | info->name = xstrdup (name); |
76b3903d GV |
1627 | info->serialnum = serialnum; |
1628 | info->maxcomp = maxcomp; | |
1629 | info->flags = flags; | |
a302c7ae | 1630 | info->type = xstrdup (type); |
76b3903d GV |
1631 | info->timestamp = GetTickCount (); |
1632 | } | |
1633 | ||
1634 | return info; | |
1635 | } | |
480b0c5b GV |
1636 | |
1637 | /* Get information on the volume where name is held; set path pointer to | |
1638 | start of pathname in name (past UNC header\volume header if present). */ | |
1639 | int | |
1640 | get_volume_info (const char * name, const char ** pPath) | |
95ed0025 | 1641 | { |
480b0c5b GV |
1642 | char temp[MAX_PATH]; |
1643 | char *rootname = NULL; /* default to current volume */ | |
76b3903d | 1644 | volume_info_data * info; |
480b0c5b GV |
1645 | |
1646 | if (name == NULL) | |
1647 | return FALSE; | |
1648 | ||
1649 | /* find the root name of the volume if given */ | |
1650 | if (isalpha (name[0]) && name[1] == ':') | |
1651 | { | |
1652 | rootname = temp; | |
1653 | temp[0] = *name++; | |
1654 | temp[1] = *name++; | |
1655 | temp[2] = '\\'; | |
1656 | temp[3] = 0; | |
1657 | } | |
1658 | else if (IS_DIRECTORY_SEP (name[0]) && IS_DIRECTORY_SEP (name[1])) | |
95ed0025 | 1659 | { |
480b0c5b GV |
1660 | char *str = temp; |
1661 | int slashes = 4; | |
1662 | rootname = temp; | |
1663 | do | |
1664 | { | |
1665 | if (IS_DIRECTORY_SEP (*name) && --slashes == 0) | |
1666 | break; | |
1667 | *str++ = *name++; | |
1668 | } | |
1669 | while ( *name ); | |
1670 | ||
480b0c5b GV |
1671 | *str++ = '\\'; |
1672 | *str = 0; | |
95ed0025 | 1673 | } |
480b0c5b GV |
1674 | |
1675 | if (pPath) | |
1676 | *pPath = name; | |
177c0ea7 | 1677 | |
76b3903d GV |
1678 | info = GetCachedVolumeInformation (rootname); |
1679 | if (info != NULL) | |
95ed0025 | 1680 | { |
76b3903d GV |
1681 | /* Set global referenced by other functions. */ |
1682 | volume_info = *info; | |
480b0c5b | 1683 | return TRUE; |
95ed0025 | 1684 | } |
480b0c5b GV |
1685 | return FALSE; |
1686 | } | |
1687 | ||
1688 | /* Determine if volume is FAT format (ie. only supports short 8.3 | |
1689 | names); also set path pointer to start of pathname in name. */ | |
1690 | int | |
1691 | is_fat_volume (const char * name, const char ** pPath) | |
1692 | { | |
1693 | if (get_volume_info (name, pPath)) | |
1694 | return (volume_info.maxcomp == 12); | |
1695 | return FALSE; | |
1696 | } | |
1697 | ||
1698 | /* Map filename to a legal 8.3 name if necessary. */ | |
1699 | const char * | |
fbd6baed | 1700 | map_w32_filename (const char * name, const char ** pPath) |
480b0c5b GV |
1701 | { |
1702 | static char shortname[MAX_PATH]; | |
1703 | char * str = shortname; | |
1704 | char c; | |
480b0c5b | 1705 | char * path; |
76b3903d | 1706 | const char * save_name = name; |
480b0c5b | 1707 | |
ca149beb AI |
1708 | if (strlen (name) >= MAX_PATH) |
1709 | { | |
1710 | /* Return a filename which will cause callers to fail. */ | |
1711 | strcpy (shortname, "?"); | |
1712 | return shortname; | |
1713 | } | |
1714 | ||
a302c7ae | 1715 | if (is_fat_volume (name, (const char **)&path)) /* truncate to 8.3 */ |
95ed0025 | 1716 | { |
480b0c5b GV |
1717 | register int left = 8; /* maximum number of chars in part */ |
1718 | register int extn = 0; /* extension added? */ | |
1719 | register int dots = 2; /* maximum number of dots allowed */ | |
1720 | ||
1721 | while (name < path) | |
1722 | *str++ = *name++; /* skip past UNC header */ | |
1723 | ||
1724 | while ((c = *name++)) | |
1725 | { | |
1726 | switch ( c ) | |
1727 | { | |
1728 | case '\\': | |
1729 | case '/': | |
1730 | *str++ = '\\'; | |
1731 | extn = 0; /* reset extension flags */ | |
1732 | dots = 2; /* max 2 dots */ | |
1733 | left = 8; /* max length 8 for main part */ | |
1734 | break; | |
1735 | case ':': | |
1736 | *str++ = ':'; | |
1737 | extn = 0; /* reset extension flags */ | |
1738 | dots = 2; /* max 2 dots */ | |
1739 | left = 8; /* max length 8 for main part */ | |
1740 | break; | |
1741 | case '.': | |
1742 | if ( dots ) | |
1743 | { | |
1744 | /* Convert path components of the form .xxx to _xxx, | |
1745 | but leave . and .. as they are. This allows .emacs | |
1746 | to be read as _emacs, for example. */ | |
1747 | ||
1748 | if (! *name || | |
1749 | *name == '.' || | |
1750 | IS_DIRECTORY_SEP (*name)) | |
1751 | { | |
1752 | *str++ = '.'; | |
1753 | dots--; | |
1754 | } | |
1755 | else | |
1756 | { | |
1757 | *str++ = '_'; | |
1758 | left--; | |
1759 | dots = 0; | |
1760 | } | |
1761 | } | |
1762 | else if ( !extn ) | |
1763 | { | |
1764 | *str++ = '.'; | |
1765 | extn = 1; /* we've got an extension */ | |
1766 | left = 3; /* 3 chars in extension */ | |
1767 | } | |
1768 | else | |
1769 | { | |
1770 | /* any embedded dots after the first are converted to _ */ | |
1771 | *str++ = '_'; | |
1772 | } | |
1773 | break; | |
1774 | case '~': | |
1775 | case '#': /* don't lose these, they're important */ | |
1776 | if ( ! left ) | |
1777 | str[-1] = c; /* replace last character of part */ | |
1778 | /* FALLTHRU */ | |
1779 | default: | |
1780 | if ( left ) | |
1781 | { | |
1782 | *str++ = tolower (c); /* map to lower case (looks nicer) */ | |
1783 | left--; | |
1784 | dots = 0; /* started a path component */ | |
1785 | } | |
1786 | break; | |
1787 | } | |
1788 | } | |
1789 | *str = '\0'; | |
fc85cb29 RS |
1790 | } |
1791 | else | |
1792 | { | |
1793 | strcpy (shortname, name); | |
1794 | unixtodos_filename (shortname); | |
95ed0025 | 1795 | } |
480b0c5b GV |
1796 | |
1797 | if (pPath) | |
76b3903d | 1798 | *pPath = shortname + (path - save_name); |
480b0c5b | 1799 | |
fc85cb29 | 1800 | return shortname; |
480b0c5b GV |
1801 | } |
1802 | ||
b3308d2e KH |
1803 | static int |
1804 | is_exec (const char * name) | |
1805 | { | |
1806 | char * p = strrchr (name, '.'); | |
1807 | return | |
1808 | (p != NULL | |
1809 | && (stricmp (p, ".exe") == 0 || | |
1810 | stricmp (p, ".com") == 0 || | |
1811 | stricmp (p, ".bat") == 0 || | |
1812 | stricmp (p, ".cmd") == 0)); | |
1813 | } | |
1814 | ||
177c0ea7 | 1815 | /* Emulate the Unix directory procedures opendir, closedir, |
76b3903d GV |
1816 | and readdir. We can't use the procedures supplied in sysdep.c, |
1817 | so we provide them here. */ | |
1818 | ||
1819 | struct direct dir_static; /* simulated directory contents */ | |
1820 | static HANDLE dir_find_handle = INVALID_HANDLE_VALUE; | |
1821 | static int dir_is_fat; | |
1822 | static char dir_pathname[MAXPATHLEN+1]; | |
1823 | static WIN32_FIND_DATA dir_find_data; | |
1824 | ||
9d3355d1 GV |
1825 | /* Support shares on a network resource as subdirectories of a read-only |
1826 | root directory. */ | |
1827 | static HANDLE wnet_enum_handle = INVALID_HANDLE_VALUE; | |
e0c181dd | 1828 | HANDLE open_unc_volume (const char *); |
9d3355d1 GV |
1829 | char *read_unc_volume (HANDLE, char *, int); |
1830 | void close_unc_volume (HANDLE); | |
1831 | ||
76b3903d GV |
1832 | DIR * |
1833 | opendir (char *filename) | |
1834 | { | |
1835 | DIR *dirp; | |
1836 | ||
1837 | /* Opening is done by FindFirstFile. However, a read is inherent to | |
1838 | this operation, so we defer the open until read time. */ | |
1839 | ||
76b3903d GV |
1840 | if (dir_find_handle != INVALID_HANDLE_VALUE) |
1841 | return NULL; | |
9d3355d1 GV |
1842 | if (wnet_enum_handle != INVALID_HANDLE_VALUE) |
1843 | return NULL; | |
1844 | ||
1845 | if (is_unc_volume (filename)) | |
1846 | { | |
1847 | wnet_enum_handle = open_unc_volume (filename); | |
1848 | if (wnet_enum_handle == INVALID_HANDLE_VALUE) | |
1849 | return NULL; | |
1850 | } | |
1851 | ||
1852 | if (!(dirp = (DIR *) malloc (sizeof (DIR)))) | |
1853 | return NULL; | |
76b3903d GV |
1854 | |
1855 | dirp->dd_fd = 0; | |
1856 | dirp->dd_loc = 0; | |
1857 | dirp->dd_size = 0; | |
1858 | ||
1859 | strncpy (dir_pathname, map_w32_filename (filename, NULL), MAXPATHLEN); | |
1860 | dir_pathname[MAXPATHLEN] = '\0'; | |
1861 | dir_is_fat = is_fat_volume (filename, NULL); | |
1862 | ||
1863 | return dirp; | |
1864 | } | |
1865 | ||
1866 | void | |
1867 | closedir (DIR *dirp) | |
1868 | { | |
1869 | /* If we have a find-handle open, close it. */ | |
1870 | if (dir_find_handle != INVALID_HANDLE_VALUE) | |
1871 | { | |
1872 | FindClose (dir_find_handle); | |
1873 | dir_find_handle = INVALID_HANDLE_VALUE; | |
1874 | } | |
9d3355d1 GV |
1875 | else if (wnet_enum_handle != INVALID_HANDLE_VALUE) |
1876 | { | |
1877 | close_unc_volume (wnet_enum_handle); | |
1878 | wnet_enum_handle = INVALID_HANDLE_VALUE; | |
1879 | } | |
76b3903d GV |
1880 | xfree ((char *) dirp); |
1881 | } | |
1882 | ||
1883 | struct direct * | |
1884 | readdir (DIR *dirp) | |
1885 | { | |
9d3355d1 GV |
1886 | if (wnet_enum_handle != INVALID_HANDLE_VALUE) |
1887 | { | |
177c0ea7 JB |
1888 | if (!read_unc_volume (wnet_enum_handle, |
1889 | dir_find_data.cFileName, | |
9d3355d1 GV |
1890 | MAX_PATH)) |
1891 | return NULL; | |
1892 | } | |
76b3903d | 1893 | /* If we aren't dir_finding, do a find-first, otherwise do a find-next. */ |
9d3355d1 | 1894 | else if (dir_find_handle == INVALID_HANDLE_VALUE) |
76b3903d GV |
1895 | { |
1896 | char filename[MAXNAMLEN + 3]; | |
1897 | int ln; | |
1898 | ||
1899 | strcpy (filename, dir_pathname); | |
1900 | ln = strlen (filename) - 1; | |
1901 | if (!IS_DIRECTORY_SEP (filename[ln])) | |
1902 | strcat (filename, "\\"); | |
1903 | strcat (filename, "*"); | |
1904 | ||
1905 | dir_find_handle = FindFirstFile (filename, &dir_find_data); | |
1906 | ||
1907 | if (dir_find_handle == INVALID_HANDLE_VALUE) | |
1908 | return NULL; | |
1909 | } | |
1910 | else | |
1911 | { | |
1912 | if (!FindNextFile (dir_find_handle, &dir_find_data)) | |
1913 | return NULL; | |
1914 | } | |
177c0ea7 | 1915 | |
76b3903d GV |
1916 | /* Emacs never uses this value, so don't bother making it match |
1917 | value returned by stat(). */ | |
1918 | dir_static.d_ino = 1; | |
177c0ea7 | 1919 | |
76b3903d GV |
1920 | dir_static.d_reclen = sizeof (struct direct) - MAXNAMLEN + 3 + |
1921 | dir_static.d_namlen - dir_static.d_namlen % 4; | |
177c0ea7 | 1922 | |
76b3903d GV |
1923 | dir_static.d_namlen = strlen (dir_find_data.cFileName); |
1924 | strcpy (dir_static.d_name, dir_find_data.cFileName); | |
1925 | if (dir_is_fat) | |
1926 | _strlwr (dir_static.d_name); | |
1927 | else if (!NILP (Vw32_downcase_file_names)) | |
1928 | { | |
1929 | register char *p; | |
1930 | for (p = dir_static.d_name; *p; p++) | |
1931 | if (*p >= 'a' && *p <= 'z') | |
1932 | break; | |
1933 | if (!*p) | |
1934 | _strlwr (dir_static.d_name); | |
1935 | } | |
177c0ea7 | 1936 | |
76b3903d GV |
1937 | return &dir_static; |
1938 | } | |
1939 | ||
9d3355d1 | 1940 | HANDLE |
e0c181dd | 1941 | open_unc_volume (const char *path) |
9d3355d1 | 1942 | { |
177c0ea7 | 1943 | NETRESOURCE nr; |
9d3355d1 GV |
1944 | HANDLE henum; |
1945 | int result; | |
1946 | ||
177c0ea7 JB |
1947 | nr.dwScope = RESOURCE_GLOBALNET; |
1948 | nr.dwType = RESOURCETYPE_DISK; | |
1949 | nr.dwDisplayType = RESOURCEDISPLAYTYPE_SERVER; | |
1950 | nr.dwUsage = RESOURCEUSAGE_CONTAINER; | |
1951 | nr.lpLocalName = NULL; | |
6e602566 | 1952 | nr.lpRemoteName = (LPSTR)map_w32_filename (path, NULL); |
177c0ea7 JB |
1953 | nr.lpComment = NULL; |
1954 | nr.lpProvider = NULL; | |
9d3355d1 | 1955 | |
177c0ea7 | 1956 | result = WNetOpenEnum(RESOURCE_GLOBALNET, RESOURCETYPE_DISK, |
9d3355d1 GV |
1957 | RESOURCEUSAGE_CONNECTABLE, &nr, &henum); |
1958 | ||
1959 | if (result == NO_ERROR) | |
1960 | return henum; | |
1961 | else | |
1962 | return INVALID_HANDLE_VALUE; | |
1963 | } | |
1964 | ||
1965 | char * | |
1966 | read_unc_volume (HANDLE henum, char *readbuf, int size) | |
1967 | { | |
a302c7ae | 1968 | DWORD count; |
9d3355d1 | 1969 | int result; |
a302c7ae | 1970 | DWORD bufsize = 512; |
9d3355d1 GV |
1971 | char *buffer; |
1972 | char *ptr; | |
1973 | ||
1974 | count = 1; | |
1975 | buffer = alloca (bufsize); | |
1976 | result = WNetEnumResource (wnet_enum_handle, &count, buffer, &bufsize); | |
1977 | if (result != NO_ERROR) | |
1978 | return NULL; | |
1979 | ||
1980 | /* WNetEnumResource returns \\resource\share...skip forward to "share". */ | |
1981 | ptr = ((LPNETRESOURCE) buffer)->lpRemoteName; | |
1982 | ptr += 2; | |
1983 | while (*ptr && !IS_DIRECTORY_SEP (*ptr)) ptr++; | |
1984 | ptr++; | |
1985 | ||
1986 | strncpy (readbuf, ptr, size); | |
1987 | return readbuf; | |
1988 | } | |
1989 | ||
1990 | void | |
1991 | close_unc_volume (HANDLE henum) | |
1992 | { | |
1993 | if (henum != INVALID_HANDLE_VALUE) | |
1994 | WNetCloseEnum (henum); | |
1995 | } | |
1996 | ||
1997 | DWORD | |
e0c181dd | 1998 | unc_volume_file_attributes (const char *path) |
9d3355d1 GV |
1999 | { |
2000 | HANDLE henum; | |
2001 | DWORD attrs; | |
2002 | ||
2003 | henum = open_unc_volume (path); | |
2004 | if (henum == INVALID_HANDLE_VALUE) | |
2005 | return -1; | |
2006 | ||
2007 | attrs = FILE_ATTRIBUTE_READONLY | FILE_ATTRIBUTE_DIRECTORY; | |
2008 | ||
2009 | close_unc_volume (henum); | |
2010 | ||
2011 | return attrs; | |
2012 | } | |
2013 | ||
302d7d54 JR |
2014 | /* Ensure a network connection is authenticated. */ |
2015 | static void | |
2016 | logon_network_drive (const char *path) | |
2017 | { | |
2018 | NETRESOURCE resource; | |
2019 | char share[MAX_PATH]; | |
2020 | int i, n_slashes; | |
2021 | ||
2022 | /* Only logon to networked drives. */ | |
2023 | if (!IS_DIRECTORY_SEP (path[0]) || !IS_DIRECTORY_SEP (path[1])) | |
2024 | return; | |
2025 | n_slashes = 2; | |
2026 | strncpy (share, path, MAX_PATH); | |
2027 | /* Truncate to just server and share name. */ | |
2028 | for (i = 2; i < MAX_PATH; i++) | |
2029 | { | |
2030 | if (IS_DIRECTORY_SEP (share[i]) && ++n_slashes > 3) | |
2031 | { | |
2032 | share[i] = '\0'; | |
2033 | break; | |
2034 | } | |
2035 | } | |
2036 | ||
2037 | resource.dwType = RESOURCETYPE_DISK; | |
2038 | resource.lpLocalName = NULL; | |
2039 | resource.lpRemoteName = share; | |
2040 | resource.lpProvider = NULL; | |
2041 | ||
2042 | WNetAddConnection2 (&resource, NULL, NULL, CONNECT_INTERACTIVE); | |
2043 | } | |
480b0c5b GV |
2044 | |
2045 | /* Shadow some MSVC runtime functions to map requests for long filenames | |
2046 | to reasonable short names if necessary. This was originally added to | |
177c0ea7 | 2047 | permit running Emacs on NT 3.1 on a FAT partition, which doesn't support |
480b0c5b GV |
2048 | long file names. */ |
2049 | ||
2050 | int | |
2051 | sys_access (const char * path, int mode) | |
2052 | { | |
b3308d2e KH |
2053 | DWORD attributes; |
2054 | ||
2055 | /* MSVC implementation doesn't recognize D_OK. */ | |
2056 | path = map_w32_filename (path, NULL); | |
9d3355d1 GV |
2057 | if (is_unc_volume (path)) |
2058 | { | |
2059 | attributes = unc_volume_file_attributes (path); | |
2060 | if (attributes == -1) { | |
2061 | errno = EACCES; | |
2062 | return -1; | |
2063 | } | |
2064 | } | |
2065 | else if ((attributes = GetFileAttributes (path)) == -1) | |
b3308d2e KH |
2066 | { |
2067 | /* Should try mapping GetLastError to errno; for now just indicate | |
2068 | that path doesn't exist. */ | |
2069 | errno = EACCES; | |
2070 | return -1; | |
2071 | } | |
2072 | if ((mode & X_OK) != 0 && !is_exec (path)) | |
2073 | { | |
2074 | errno = EACCES; | |
2075 | return -1; | |
2076 | } | |
2077 | if ((mode & W_OK) != 0 && (attributes & FILE_ATTRIBUTE_READONLY) != 0) | |
2078 | { | |
2079 | errno = EACCES; | |
2080 | return -1; | |
2081 | } | |
2082 | if ((mode & D_OK) != 0 && (attributes & FILE_ATTRIBUTE_DIRECTORY) == 0) | |
2083 | { | |
2084 | errno = EACCES; | |
2085 | return -1; | |
2086 | } | |
2087 | return 0; | |
480b0c5b GV |
2088 | } |
2089 | ||
2090 | int | |
2091 | sys_chdir (const char * path) | |
2092 | { | |
fbd6baed | 2093 | return _chdir (map_w32_filename (path, NULL)); |
480b0c5b GV |
2094 | } |
2095 | ||
2096 | int | |
2097 | sys_chmod (const char * path, int mode) | |
2098 | { | |
fbd6baed | 2099 | return _chmod (map_w32_filename (path, NULL), mode); |
480b0c5b GV |
2100 | } |
2101 | ||
2d5ab4bf EZ |
2102 | int |
2103 | sys_chown (const char *path, uid_t owner, gid_t group) | |
2104 | { | |
2105 | if (sys_chmod (path, _S_IREAD) == -1) /* check if file exists */ | |
2106 | return -1; | |
2107 | return 0; | |
2108 | } | |
2109 | ||
480b0c5b GV |
2110 | int |
2111 | sys_creat (const char * path, int mode) | |
2112 | { | |
fbd6baed | 2113 | return _creat (map_w32_filename (path, NULL), mode); |
480b0c5b GV |
2114 | } |
2115 | ||
2116 | FILE * | |
2117 | sys_fopen(const char * path, const char * mode) | |
2118 | { | |
2119 | int fd; | |
2120 | int oflag; | |
2121 | const char * mode_save = mode; | |
2122 | ||
2123 | /* Force all file handles to be non-inheritable. This is necessary to | |
2124 | ensure child processes don't unwittingly inherit handles that might | |
2125 | prevent future file access. */ | |
2126 | ||
2127 | if (mode[0] == 'r') | |
2128 | oflag = O_RDONLY; | |
2129 | else if (mode[0] == 'w' || mode[0] == 'a') | |
2130 | oflag = O_WRONLY | O_CREAT | O_TRUNC; | |
95ed0025 | 2131 | else |
480b0c5b GV |
2132 | return NULL; |
2133 | ||
2134 | /* Only do simplistic option parsing. */ | |
2135 | while (*++mode) | |
2136 | if (mode[0] == '+') | |
2137 | { | |
2138 | oflag &= ~(O_RDONLY | O_WRONLY); | |
2139 | oflag |= O_RDWR; | |
2140 | } | |
2141 | else if (mode[0] == 'b') | |
2142 | { | |
2143 | oflag &= ~O_TEXT; | |
2144 | oflag |= O_BINARY; | |
2145 | } | |
2146 | else if (mode[0] == 't') | |
2147 | { | |
2148 | oflag &= ~O_BINARY; | |
2149 | oflag |= O_TEXT; | |
2150 | } | |
2151 | else break; | |
2152 | ||
fbd6baed | 2153 | fd = _open (map_w32_filename (path, NULL), oflag | _O_NOINHERIT, 0644); |
480b0c5b GV |
2154 | if (fd < 0) |
2155 | return NULL; | |
2156 | ||
76b3903d | 2157 | return _fdopen (fd, mode_save); |
95ed0025 | 2158 | } |
480b0c5b | 2159 | |
76b3903d | 2160 | /* This only works on NTFS volumes, but is useful to have. */ |
480b0c5b | 2161 | int |
76b3903d | 2162 | sys_link (const char * old, const char * new) |
480b0c5b | 2163 | { |
76b3903d GV |
2164 | HANDLE fileh; |
2165 | int result = -1; | |
2166 | char oldname[MAX_PATH], newname[MAX_PATH]; | |
2167 | ||
2168 | if (old == NULL || new == NULL) | |
2169 | { | |
2170 | errno = ENOENT; | |
2171 | return -1; | |
2172 | } | |
2173 | ||
2174 | strcpy (oldname, map_w32_filename (old, NULL)); | |
2175 | strcpy (newname, map_w32_filename (new, NULL)); | |
2176 | ||
2177 | fileh = CreateFile (oldname, 0, 0, NULL, OPEN_EXISTING, | |
2178 | FILE_FLAG_BACKUP_SEMANTICS, NULL); | |
2179 | if (fileh != INVALID_HANDLE_VALUE) | |
2180 | { | |
2181 | int wlen; | |
2182 | ||
2183 | /* Confusingly, the "alternate" stream name field does not apply | |
2184 | when restoring a hard link, and instead contains the actual | |
2185 | stream data for the link (ie. the name of the link to create). | |
2186 | The WIN32_STREAM_ID structure before the cStreamName field is | |
2187 | the stream header, which is then immediately followed by the | |
2188 | stream data. */ | |
2189 | ||
2190 | struct { | |
2191 | WIN32_STREAM_ID wid; | |
2192 | WCHAR wbuffer[MAX_PATH]; /* extra space for link name */ | |
2193 | } data; | |
2194 | ||
2195 | wlen = MultiByteToWideChar (CP_ACP, MB_PRECOMPOSED, newname, -1, | |
2196 | data.wid.cStreamName, MAX_PATH); | |
2197 | if (wlen > 0) | |
2198 | { | |
2199 | LPVOID context = NULL; | |
2200 | DWORD wbytes = 0; | |
2201 | ||
2202 | data.wid.dwStreamId = BACKUP_LINK; | |
2203 | data.wid.dwStreamAttributes = 0; | |
2204 | data.wid.Size.LowPart = wlen * sizeof(WCHAR); | |
2205 | data.wid.Size.HighPart = 0; | |
2206 | data.wid.dwStreamNameSize = 0; | |
2207 | ||
2208 | if (BackupWrite (fileh, (LPBYTE)&data, | |
2209 | offsetof (WIN32_STREAM_ID, cStreamName) | |
2210 | + data.wid.Size.LowPart, | |
2211 | &wbytes, FALSE, FALSE, &context) | |
2212 | && BackupWrite (fileh, NULL, 0, &wbytes, TRUE, FALSE, &context)) | |
2213 | { | |
2214 | /* succeeded */ | |
2215 | result = 0; | |
2216 | } | |
2217 | else | |
2218 | { | |
2219 | /* Should try mapping GetLastError to errno; for now just | |
2220 | indicate a general error (eg. links not supported). */ | |
2221 | errno = EINVAL; // perhaps EMLINK? | |
2222 | } | |
2223 | } | |
2224 | ||
2225 | CloseHandle (fileh); | |
2226 | } | |
2227 | else | |
2228 | errno = ENOENT; | |
2229 | ||
2230 | return result; | |
480b0c5b GV |
2231 | } |
2232 | ||
2233 | int | |
2234 | sys_mkdir (const char * path) | |
2235 | { | |
fbd6baed | 2236 | return _mkdir (map_w32_filename (path, NULL)); |
480b0c5b GV |
2237 | } |
2238 | ||
9d1778b1 RS |
2239 | /* Because of long name mapping issues, we need to implement this |
2240 | ourselves. Also, MSVC's _mktemp returns NULL when it can't generate | |
2241 | a unique name, instead of setting the input template to an empty | |
2242 | string. | |
2243 | ||
2244 | Standard algorithm seems to be use pid or tid with a letter on the | |
2245 | front (in place of the 6 X's) and cycle through the letters to find a | |
2246 | unique name. We extend that to allow any reasonable character as the | |
2247 | first of the 6 X's. */ | |
480b0c5b GV |
2248 | char * |
2249 | sys_mktemp (char * template) | |
2250 | { | |
9d1778b1 RS |
2251 | char * p; |
2252 | int i; | |
2253 | unsigned uid = GetCurrentThreadId (); | |
2254 | static char first_char[] = "abcdefghijklmnopqrstuvwyz0123456789!%-_@#"; | |
2255 | ||
2256 | if (template == NULL) | |
2257 | return NULL; | |
2258 | p = template + strlen (template); | |
2259 | i = 5; | |
2260 | /* replace up to the last 5 X's with uid in decimal */ | |
2261 | while (--p >= template && p[0] == 'X' && --i >= 0) | |
2262 | { | |
2263 | p[0] = '0' + uid % 10; | |
2264 | uid /= 10; | |
2265 | } | |
2266 | ||
2267 | if (i < 0 && p[0] == 'X') | |
2268 | { | |
2269 | i = 0; | |
2270 | do | |
2271 | { | |
2272 | int save_errno = errno; | |
2273 | p[0] = first_char[i]; | |
2274 | if (sys_access (template, 0) < 0) | |
2275 | { | |
2276 | errno = save_errno; | |
2277 | return template; | |
2278 | } | |
2279 | } | |
2280 | while (++i < sizeof (first_char)); | |
2281 | } | |
2282 | ||
2283 | /* Template is badly formed or else we can't generate a unique name, | |
2284 | so return empty string */ | |
2285 | template[0] = 0; | |
2286 | return template; | |
480b0c5b GV |
2287 | } |
2288 | ||
2289 | int | |
2290 | sys_open (const char * path, int oflag, int mode) | |
2291 | { | |
302f0b29 GM |
2292 | const char* mpath = map_w32_filename (path, NULL); |
2293 | /* Try to open file without _O_CREAT, to be able to write to hidden | |
2294 | and system files. Force all file handles to be | |
2295 | non-inheritable. */ | |
2296 | int res = _open (mpath, (oflag & ~_O_CREAT) | _O_NOINHERIT, mode); | |
2297 | if (res >= 0) | |
2298 | return res; | |
2299 | return _open (mpath, oflag | _O_NOINHERIT, mode); | |
480b0c5b GV |
2300 | } |
2301 | ||
2302 | int | |
2303 | sys_rename (const char * oldname, const char * newname) | |
2304 | { | |
cfb5e855 | 2305 | BOOL result; |
b3308d2e | 2306 | char temp[MAX_PATH]; |
480b0c5b | 2307 | |
e9e23e23 | 2308 | /* MoveFile on Windows 95 doesn't correctly change the short file name |
5162ffce MB |
2309 | alias in a number of circumstances (it is not easy to predict when |
2310 | just by looking at oldname and newname, unfortunately). In these | |
2311 | cases, renaming through a temporary name avoids the problem. | |
2312 | ||
e9e23e23 | 2313 | A second problem on Windows 95 is that renaming through a temp name when |
5162ffce MB |
2314 | newname is uppercase fails (the final long name ends up in |
2315 | lowercase, although the short alias might be uppercase) UNLESS the | |
2316 | long temp name is not 8.3. | |
2317 | ||
e9e23e23 | 2318 | So, on Windows 95 we always rename through a temp name, and we make sure |
5162ffce | 2319 | the temp name has a long extension to ensure correct renaming. */ |
480b0c5b | 2320 | |
fbd6baed | 2321 | strcpy (temp, map_w32_filename (oldname, NULL)); |
480b0c5b | 2322 | |
76b3903d | 2323 | if (os_subtype == OS_WIN95) |
480b0c5b | 2324 | { |
b3308d2e | 2325 | char * o; |
480b0c5b | 2326 | char * p; |
b3308d2e KH |
2327 | int i = 0; |
2328 | ||
2329 | oldname = map_w32_filename (oldname, NULL); | |
2330 | if (o = strrchr (oldname, '\\')) | |
2331 | o++; | |
2332 | else | |
2333 | o = (char *) oldname; | |
480b0c5b | 2334 | |
480b0c5b GV |
2335 | if (p = strrchr (temp, '\\')) |
2336 | p++; | |
2337 | else | |
2338 | p = temp; | |
b3308d2e KH |
2339 | |
2340 | do | |
2341 | { | |
2342 | /* Force temp name to require a manufactured 8.3 alias - this | |
2343 | seems to make the second rename work properly. */ | |
f313ee82 | 2344 | sprintf (p, "_.%s.%u", o, i); |
b3308d2e | 2345 | i++; |
58f0cb7e | 2346 | result = rename (oldname, temp); |
b3308d2e KH |
2347 | } |
2348 | /* This loop must surely terminate! */ | |
cfb5e855 | 2349 | while (result < 0 && errno == EEXIST); |
58f0cb7e | 2350 | if (result < 0) |
480b0c5b GV |
2351 | return -1; |
2352 | } | |
2353 | ||
2354 | /* Emulate Unix behaviour - newname is deleted if it already exists | |
5162ffce | 2355 | (at least if it is a file; don't do this for directories). |
76b3903d | 2356 | |
b3308d2e KH |
2357 | Since we mustn't do this if we are just changing the case of the |
2358 | file name (we would end up deleting the file we are trying to | |
2359 | rename!), we let rename detect if the destination file already | |
2360 | exists - that way we avoid the possible pitfalls of trying to | |
2361 | determine ourselves whether two names really refer to the same | |
2362 | file, which is not always possible in the general case. (Consider | |
2363 | all the permutations of shared or subst'd drives, etc.) */ | |
2364 | ||
2365 | newname = map_w32_filename (newname, NULL); | |
eb9ea53f | 2366 | result = rename (temp, newname); |
b3308d2e KH |
2367 | |
2368 | if (result < 0 | |
cfb5e855 | 2369 | && errno == EEXIST |
b3308d2e KH |
2370 | && _chmod (newname, 0666) == 0 |
2371 | && _unlink (newname) == 0) | |
2372 | result = rename (temp, newname); | |
480b0c5b | 2373 | |
eb9ea53f | 2374 | return result; |
480b0c5b GV |
2375 | } |
2376 | ||
2377 | int | |
2378 | sys_rmdir (const char * path) | |
2379 | { | |
fbd6baed | 2380 | return _rmdir (map_w32_filename (path, NULL)); |
480b0c5b GV |
2381 | } |
2382 | ||
2383 | int | |
2384 | sys_unlink (const char * path) | |
2385 | { | |
16bb7578 GV |
2386 | path = map_w32_filename (path, NULL); |
2387 | ||
2388 | /* On Unix, unlink works without write permission. */ | |
2389 | _chmod (path, 0666); | |
2390 | return _unlink (path); | |
480b0c5b GV |
2391 | } |
2392 | ||
2393 | static FILETIME utc_base_ft; | |
2394 | static long double utc_base; | |
2395 | static int init = 0; | |
2396 | ||
2397 | static time_t | |
2398 | convert_time (FILETIME ft) | |
2399 | { | |
2400 | long double ret; | |
2401 | ||
2402 | if (!init) | |
2403 | { | |
2404 | /* Determine the delta between 1-Jan-1601 and 1-Jan-1970. */ | |
2405 | SYSTEMTIME st; | |
2406 | ||
2407 | st.wYear = 1970; | |
2408 | st.wMonth = 1; | |
2409 | st.wDay = 1; | |
2410 | st.wHour = 0; | |
2411 | st.wMinute = 0; | |
2412 | st.wSecond = 0; | |
2413 | st.wMilliseconds = 0; | |
2414 | ||
2415 | SystemTimeToFileTime (&st, &utc_base_ft); | |
2416 | utc_base = (long double) utc_base_ft.dwHighDateTime | |
69b72317 | 2417 | * 4096.0L * 1024.0L * 1024.0L + utc_base_ft.dwLowDateTime; |
480b0c5b GV |
2418 | init = 1; |
2419 | } | |
2420 | ||
2421 | if (CompareFileTime (&ft, &utc_base_ft) < 0) | |
2422 | return 0; | |
2423 | ||
69b72317 EZ |
2424 | ret = (long double) ft.dwHighDateTime |
2425 | * 4096.0L * 1024.0L * 1024.0L + ft.dwLowDateTime; | |
480b0c5b | 2426 | ret -= utc_base; |
69b72317 | 2427 | return (time_t) (ret * 1e-7L); |
480b0c5b GV |
2428 | } |
2429 | ||
480b0c5b GV |
2430 | void |
2431 | convert_from_time_t (time_t time, FILETIME * pft) | |
2432 | { | |
2433 | long double tmp; | |
2434 | ||
2435 | if (!init) | |
2436 | { | |
2437 | /* Determine the delta between 1-Jan-1601 and 1-Jan-1970. */ | |
2438 | SYSTEMTIME st; | |
2439 | ||
2440 | st.wYear = 1970; | |
2441 | st.wMonth = 1; | |
2442 | st.wDay = 1; | |
2443 | st.wHour = 0; | |
2444 | st.wMinute = 0; | |
2445 | st.wSecond = 0; | |
2446 | st.wMilliseconds = 0; | |
2447 | ||
2448 | SystemTimeToFileTime (&st, &utc_base_ft); | |
2449 | utc_base = (long double) utc_base_ft.dwHighDateTime | |
2450 | * 4096 * 1024 * 1024 + utc_base_ft.dwLowDateTime; | |
2451 | init = 1; | |
2452 | } | |
2453 | ||
2454 | /* time in 100ns units since 1-Jan-1601 */ | |
2455 | tmp = (long double) time * 1e7 + utc_base; | |
2456 | pft->dwHighDateTime = (DWORD) (tmp / (4096.0 * 1024 * 1024)); | |
16bb7578 | 2457 | pft->dwLowDateTime = (DWORD) (tmp - (4096.0 * 1024 * 1024) * pft->dwHighDateTime); |
480b0c5b | 2458 | } |
480b0c5b | 2459 | |
76b3903d GV |
2460 | #if 0 |
2461 | /* No reason to keep this; faking inode values either by hashing or even | |
2462 | using the file index from GetInformationByHandle, is not perfect and | |
2463 | so by default Emacs doesn't use the inode values on Windows. | |
2464 | Instead, we now determine file-truename correctly (except for | |
2465 | possible drive aliasing etc). */ | |
2466 | ||
2467 | /* Modified version of "PJW" algorithm (see the "Dragon" compiler book). */ | |
480b0c5b | 2468 | static unsigned |
76b3903d | 2469 | hashval (const unsigned char * str) |
480b0c5b GV |
2470 | { |
2471 | unsigned h = 0; | |
480b0c5b GV |
2472 | while (*str) |
2473 | { | |
2474 | h = (h << 4) + *str++; | |
76b3903d | 2475 | h ^= (h >> 28); |
480b0c5b GV |
2476 | } |
2477 | return h; | |
2478 | } | |
2479 | ||
2480 | /* Return the hash value of the canonical pathname, excluding the | |
2481 | drive/UNC header, to get a hopefully unique inode number. */ | |
76b3903d | 2482 | static DWORD |
480b0c5b GV |
2483 | generate_inode_val (const char * name) |
2484 | { | |
2485 | char fullname[ MAX_PATH ]; | |
2486 | char * p; | |
2487 | unsigned hash; | |
2488 | ||
76b3903d GV |
2489 | /* Get the truly canonical filename, if it exists. (Note: this |
2490 | doesn't resolve aliasing due to subst commands, or recognise hard | |
2491 | links. */ | |
2492 | if (!w32_get_long_filename ((char *)name, fullname, MAX_PATH)) | |
2493 | abort (); | |
2494 | ||
2495 | parse_root (fullname, &p); | |
fbd6baed | 2496 | /* Normal W32 filesystems are still case insensitive. */ |
480b0c5b | 2497 | _strlwr (p); |
76b3903d | 2498 | return hashval (p); |
480b0c5b GV |
2499 | } |
2500 | ||
76b3903d GV |
2501 | #endif |
2502 | ||
480b0c5b GV |
2503 | /* MSVC stat function can't cope with UNC names and has other bugs, so |
2504 | replace it with our own. This also allows us to calculate consistent | |
2505 | inode values without hacks in the main Emacs code. */ | |
2506 | int | |
2507 | stat (const char * path, struct stat * buf) | |
2508 | { | |
eb9ea53f | 2509 | char *name, *r; |
480b0c5b GV |
2510 | WIN32_FIND_DATA wfd; |
2511 | HANDLE fh; | |
76b3903d | 2512 | DWORD fake_inode; |
480b0c5b GV |
2513 | int permission; |
2514 | int len; | |
2515 | int rootdir = FALSE; | |
2516 | ||
2517 | if (path == NULL || buf == NULL) | |
2518 | { | |
2519 | errno = EFAULT; | |
2520 | return -1; | |
2521 | } | |
2522 | ||
fbd6baed | 2523 | name = (char *) map_w32_filename (path, &path); |
22189f79 EZ |
2524 | /* Must be valid filename, no wild cards or other invalid |
2525 | characters. We use _mbspbrk to support multibyte strings that | |
2526 | might look to strpbrk as if they included literal *, ?, and other | |
2527 | characters mentioned below that are disallowed by Windows | |
2528 | filesystems. */ | |
2529 | if (_mbspbrk (name, "*?|<>\"")) | |
480b0c5b GV |
2530 | { |
2531 | errno = ENOENT; | |
2532 | return -1; | |
2533 | } | |
2534 | ||
eb9ea53f GV |
2535 | /* If name is "c:/.." or "/.." then stat "c:/" or "/". */ |
2536 | r = IS_DEVICE_SEP (name[1]) ? &name[2] : name; | |
2537 | if (IS_DIRECTORY_SEP (r[0]) && r[1] == '.' && r[2] == '.' && r[3] == '\0') | |
2538 | { | |
2539 | r[1] = r[2] = '\0'; | |
2540 | } | |
2541 | ||
480b0c5b GV |
2542 | /* Remove trailing directory separator, unless name is the root |
2543 | directory of a drive or UNC volume in which case ensure there | |
2544 | is a trailing separator. */ | |
2545 | len = strlen (name); | |
2546 | rootdir = (path >= name + len - 1 | |
2547 | && (IS_DIRECTORY_SEP (*path) || *path == 0)); | |
2548 | name = strcpy (alloca (len + 2), name); | |
2549 | ||
9d3355d1 GV |
2550 | if (is_unc_volume (name)) |
2551 | { | |
2552 | DWORD attrs = unc_volume_file_attributes (name); | |
2553 | ||
2554 | if (attrs == -1) | |
2555 | return -1; | |
2556 | ||
2557 | memset (&wfd, 0, sizeof (wfd)); | |
2558 | wfd.dwFileAttributes = attrs; | |
2559 | wfd.ftCreationTime = utc_base_ft; | |
2560 | wfd.ftLastAccessTime = utc_base_ft; | |
2561 | wfd.ftLastWriteTime = utc_base_ft; | |
2562 | strcpy (wfd.cFileName, name); | |
2563 | } | |
2564 | else if (rootdir) | |
480b0c5b GV |
2565 | { |
2566 | if (!IS_DIRECTORY_SEP (name[len-1])) | |
2567 | strcat (name, "\\"); | |
2568 | if (GetDriveType (name) < 2) | |
2569 | { | |
2570 | errno = ENOENT; | |
2571 | return -1; | |
2572 | } | |
2573 | memset (&wfd, 0, sizeof (wfd)); | |
2574 | wfd.dwFileAttributes = FILE_ATTRIBUTE_DIRECTORY; | |
2575 | wfd.ftCreationTime = utc_base_ft; | |
2576 | wfd.ftLastAccessTime = utc_base_ft; | |
2577 | wfd.ftLastWriteTime = utc_base_ft; | |
2578 | strcpy (wfd.cFileName, name); | |
2579 | } | |
2580 | else | |
2581 | { | |
2582 | if (IS_DIRECTORY_SEP (name[len-1])) | |
2583 | name[len - 1] = 0; | |
76b3903d GV |
2584 | |
2585 | /* (This is hacky, but helps when doing file completions on | |
2586 | network drives.) Optimize by using information available from | |
2587 | active readdir if possible. */ | |
b19cc00c GV |
2588 | len = strlen (dir_pathname); |
2589 | if (IS_DIRECTORY_SEP (dir_pathname[len-1])) | |
2590 | len--; | |
76b3903d | 2591 | if (dir_find_handle != INVALID_HANDLE_VALUE |
b19cc00c | 2592 | && strnicmp (name, dir_pathname, len) == 0 |
76b3903d GV |
2593 | && IS_DIRECTORY_SEP (name[len]) |
2594 | && stricmp (name + len + 1, dir_static.d_name) == 0) | |
480b0c5b | 2595 | { |
76b3903d GV |
2596 | /* This was the last entry returned by readdir. */ |
2597 | wfd = dir_find_data; | |
2598 | } | |
2599 | else | |
2600 | { | |
513feaa5 | 2601 | logon_network_drive (name); |
302d7d54 | 2602 | |
76b3903d GV |
2603 | fh = FindFirstFile (name, &wfd); |
2604 | if (fh == INVALID_HANDLE_VALUE) | |
2605 | { | |
2606 | errno = ENOENT; | |
2607 | return -1; | |
2608 | } | |
2609 | FindClose (fh); | |
480b0c5b | 2610 | } |
480b0c5b GV |
2611 | } |
2612 | ||
93e0f0da JR |
2613 | if (!NILP (Vw32_get_true_file_attributes) |
2614 | /* No access rights required to get info. */ | |
2615 | && (fh = CreateFile (name, 0, 0, NULL, OPEN_EXISTING, | |
2616 | FILE_FLAG_BACKUP_SEMANTICS, NULL)) | |
2617 | != INVALID_HANDLE_VALUE) | |
480b0c5b | 2618 | { |
480b0c5b | 2619 | /* This is more accurate in terms of gettting the correct number |
aa5ee2a3 | 2620 | of links, but is quite slow (it is noticeable when Emacs is |
480b0c5b GV |
2621 | making a list of file name completions). */ |
2622 | BY_HANDLE_FILE_INFORMATION info; | |
2623 | ||
480b0c5b GV |
2624 | if (GetFileInformationByHandle (fh, &info)) |
2625 | { | |
480b0c5b | 2626 | buf->st_nlink = info.nNumberOfLinks; |
76b3903d GV |
2627 | /* Might as well use file index to fake inode values, but this |
2628 | is not guaranteed to be unique unless we keep a handle open | |
2629 | all the time (even then there are situations where it is | |
2630 | not unique). Reputedly, there are at most 48 bits of info | |
2631 | (on NTFS, presumably less on FAT). */ | |
2632 | fake_inode = info.nFileIndexLow ^ info.nFileIndexHigh; | |
480b0c5b GV |
2633 | } |
2634 | else | |
2635 | { | |
01f31dfb AI |
2636 | buf->st_nlink = 1; |
2637 | fake_inode = 0; | |
2638 | } | |
2639 | ||
93e0f0da | 2640 | if (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) |
01f31dfb | 2641 | { |
93e0f0da JR |
2642 | buf->st_mode = _S_IFDIR; |
2643 | } | |
2644 | else | |
2645 | { | |
2646 | switch (GetFileType (fh)) | |
2647 | { | |
2648 | case FILE_TYPE_DISK: | |
2649 | buf->st_mode = _S_IFREG; | |
2650 | break; | |
2651 | case FILE_TYPE_PIPE: | |
2652 | buf->st_mode = _S_IFIFO; | |
2653 | break; | |
2654 | case FILE_TYPE_CHAR: | |
2655 | case FILE_TYPE_UNKNOWN: | |
2656 | default: | |
2657 | buf->st_mode = _S_IFCHR; | |
2658 | } | |
480b0c5b | 2659 | } |
01f31dfb | 2660 | CloseHandle (fh); |
76b3903d GV |
2661 | } |
2662 | else | |
2663 | { | |
2664 | /* Don't bother to make this information more accurate. */ | |
93e0f0da | 2665 | buf->st_mode = (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) ? |
bc5fdfc7 | 2666 | _S_IFDIR : _S_IFREG; |
480b0c5b | 2667 | buf->st_nlink = 1; |
76b3903d GV |
2668 | fake_inode = 0; |
2669 | } | |
2670 | ||
2671 | #if 0 | |
2672 | /* Not sure if there is any point in this. */ | |
2673 | if (!NILP (Vw32_generate_fake_inodes)) | |
2674 | fake_inode = generate_inode_val (name); | |
2675 | else if (fake_inode == 0) | |
2676 | { | |
2677 | /* For want of something better, try to make everything unique. */ | |
2678 | static DWORD gen_num = 0; | |
2679 | fake_inode = ++gen_num; | |
480b0c5b | 2680 | } |
76b3903d GV |
2681 | #endif |
2682 | ||
2683 | /* MSVC defines _ino_t to be short; other libc's might not. */ | |
2684 | if (sizeof (buf->st_ino) == 2) | |
2685 | buf->st_ino = fake_inode ^ (fake_inode >> 16); | |
2686 | else | |
2687 | buf->st_ino = fake_inode; | |
480b0c5b GV |
2688 | |
2689 | /* consider files to belong to current user */ | |
2690 | buf->st_uid = the_passwd.pw_uid; | |
2691 | buf->st_gid = the_passwd.pw_gid; | |
2692 | ||
fbd6baed | 2693 | /* volume_info is set indirectly by map_w32_filename */ |
480b0c5b GV |
2694 | buf->st_dev = volume_info.serialnum; |
2695 | buf->st_rdev = volume_info.serialnum; | |
2696 | ||
480b0c5b GV |
2697 | |
2698 | buf->st_size = wfd.nFileSizeLow; | |
2699 | ||
2700 | /* Convert timestamps to Unix format. */ | |
2701 | buf->st_mtime = convert_time (wfd.ftLastWriteTime); | |
2702 | buf->st_atime = convert_time (wfd.ftLastAccessTime); | |
2703 | if (buf->st_atime == 0) buf->st_atime = buf->st_mtime; | |
2704 | buf->st_ctime = convert_time (wfd.ftCreationTime); | |
2705 | if (buf->st_ctime == 0) buf->st_ctime = buf->st_mtime; | |
2706 | ||
2707 | /* determine rwx permissions */ | |
2708 | if (wfd.dwFileAttributes & FILE_ATTRIBUTE_READONLY) | |
2709 | permission = _S_IREAD; | |
2710 | else | |
2711 | permission = _S_IREAD | _S_IWRITE; | |
177c0ea7 | 2712 | |
480b0c5b GV |
2713 | if (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) |
2714 | permission |= _S_IEXEC; | |
b3308d2e KH |
2715 | else if (is_exec (name)) |
2716 | permission |= _S_IEXEC; | |
480b0c5b GV |
2717 | |
2718 | buf->st_mode |= permission | (permission >> 3) | (permission >> 6); | |
2719 | ||
2720 | return 0; | |
2721 | } | |
2722 | ||
16bb7578 GV |
2723 | /* Provide fstat and utime as well as stat for consistent handling of |
2724 | file timestamps. */ | |
2725 | int | |
2726 | fstat (int desc, struct stat * buf) | |
2727 | { | |
2728 | HANDLE fh = (HANDLE) _get_osfhandle (desc); | |
2729 | BY_HANDLE_FILE_INFORMATION info; | |
2730 | DWORD fake_inode; | |
2731 | int permission; | |
2732 | ||
2733 | switch (GetFileType (fh) & ~FILE_TYPE_REMOTE) | |
2734 | { | |
2735 | case FILE_TYPE_DISK: | |
2736 | buf->st_mode = _S_IFREG; | |
2737 | if (!GetFileInformationByHandle (fh, &info)) | |
2738 | { | |
2739 | errno = EACCES; | |
2740 | return -1; | |
2741 | } | |
2742 | break; | |
2743 | case FILE_TYPE_PIPE: | |
2744 | buf->st_mode = _S_IFIFO; | |
2745 | goto non_disk; | |
2746 | case FILE_TYPE_CHAR: | |
2747 | case FILE_TYPE_UNKNOWN: | |
2748 | default: | |
2749 | buf->st_mode = _S_IFCHR; | |
2750 | non_disk: | |
2751 | memset (&info, 0, sizeof (info)); | |
2752 | info.dwFileAttributes = 0; | |
2753 | info.ftCreationTime = utc_base_ft; | |
2754 | info.ftLastAccessTime = utc_base_ft; | |
2755 | info.ftLastWriteTime = utc_base_ft; | |
2756 | } | |
2757 | ||
2758 | if (info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) | |
16bb7578 | 2759 | buf->st_mode = _S_IFDIR; |
93e0f0da JR |
2760 | |
2761 | buf->st_nlink = info.nNumberOfLinks; | |
2762 | /* Might as well use file index to fake inode values, but this | |
2763 | is not guaranteed to be unique unless we keep a handle open | |
2764 | all the time (even then there are situations where it is | |
2765 | not unique). Reputedly, there are at most 48 bits of info | |
2766 | (on NTFS, presumably less on FAT). */ | |
2767 | fake_inode = info.nFileIndexLow ^ info.nFileIndexHigh; | |
16bb7578 GV |
2768 | |
2769 | /* MSVC defines _ino_t to be short; other libc's might not. */ | |
2770 | if (sizeof (buf->st_ino) == 2) | |
2771 | buf->st_ino = fake_inode ^ (fake_inode >> 16); | |
2772 | else | |
2773 | buf->st_ino = fake_inode; | |
2774 | ||
2775 | /* consider files to belong to current user */ | |
248c21c5 EZ |
2776 | buf->st_uid = the_passwd.pw_uid; |
2777 | buf->st_gid = the_passwd.pw_gid; | |
16bb7578 GV |
2778 | |
2779 | buf->st_dev = info.dwVolumeSerialNumber; | |
2780 | buf->st_rdev = info.dwVolumeSerialNumber; | |
2781 | ||
2782 | buf->st_size = info.nFileSizeLow; | |
2783 | ||
2784 | /* Convert timestamps to Unix format. */ | |
2785 | buf->st_mtime = convert_time (info.ftLastWriteTime); | |
2786 | buf->st_atime = convert_time (info.ftLastAccessTime); | |
2787 | if (buf->st_atime == 0) buf->st_atime = buf->st_mtime; | |
2788 | buf->st_ctime = convert_time (info.ftCreationTime); | |
2789 | if (buf->st_ctime == 0) buf->st_ctime = buf->st_mtime; | |
2790 | ||
2791 | /* determine rwx permissions */ | |
2792 | if (info.dwFileAttributes & FILE_ATTRIBUTE_READONLY) | |
2793 | permission = _S_IREAD; | |
2794 | else | |
2795 | permission = _S_IREAD | _S_IWRITE; | |
177c0ea7 | 2796 | |
16bb7578 GV |
2797 | if (info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) |
2798 | permission |= _S_IEXEC; | |
2799 | else | |
2800 | { | |
2801 | #if 0 /* no way of knowing the filename */ | |
2802 | char * p = strrchr (name, '.'); | |
2803 | if (p != NULL && | |
2804 | (stricmp (p, ".exe") == 0 || | |
2805 | stricmp (p, ".com") == 0 || | |
2806 | stricmp (p, ".bat") == 0 || | |
2807 | stricmp (p, ".cmd") == 0)) | |
2808 | permission |= _S_IEXEC; | |
2809 | #endif | |
2810 | } | |
2811 | ||
2812 | buf->st_mode |= permission | (permission >> 3) | (permission >> 6); | |
2813 | ||
2814 | return 0; | |
2815 | } | |
2816 | ||
2817 | int | |
2818 | utime (const char *name, struct utimbuf *times) | |
2819 | { | |
2820 | struct utimbuf deftime; | |
2821 | HANDLE fh; | |
2822 | FILETIME mtime; | |
2823 | FILETIME atime; | |
2824 | ||
2825 | if (times == NULL) | |
2826 | { | |
2827 | deftime.modtime = deftime.actime = time (NULL); | |
2828 | times = &deftime; | |
2829 | } | |
2830 | ||
2831 | /* Need write access to set times. */ | |
2832 | fh = CreateFile (name, GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, | |
2833 | 0, OPEN_EXISTING, 0, NULL); | |
2834 | if (fh) | |
2835 | { | |
2836 | convert_from_time_t (times->actime, &atime); | |
2837 | convert_from_time_t (times->modtime, &mtime); | |
2838 | if (!SetFileTime (fh, NULL, &atime, &mtime)) | |
2839 | { | |
2840 | CloseHandle (fh); | |
2841 | errno = EACCES; | |
2842 | return -1; | |
2843 | } | |
2844 | CloseHandle (fh); | |
2845 | } | |
2846 | else | |
2847 | { | |
2848 | errno = EINVAL; | |
2849 | return -1; | |
2850 | } | |
2851 | return 0; | |
2852 | } | |
2853 | ||
480b0c5b GV |
2854 | #ifdef HAVE_SOCKETS |
2855 | ||
2856 | /* Wrappers for winsock functions to map between our file descriptors | |
2857 | and winsock's handles; also set h_errno for convenience. | |
2858 | ||
2859 | To allow Emacs to run on systems which don't have winsock support | |
2860 | installed, we dynamically link to winsock on startup if present, and | |
2861 | otherwise provide the minimum necessary functionality | |
2862 | (eg. gethostname). */ | |
2863 | ||
2864 | /* function pointers for relevant socket functions */ | |
2865 | int (PASCAL *pfn_WSAStartup) (WORD wVersionRequired, LPWSADATA lpWSAData); | |
2866 | void (PASCAL *pfn_WSASetLastError) (int iError); | |
2867 | int (PASCAL *pfn_WSAGetLastError) (void); | |
26fb7bc4 | 2868 | int (PASCAL *pfn_WSAEventSelect) (SOCKET s, HANDLE hEventObject, long lNetworkEvents); |
64570b36 KS |
2869 | HANDLE (PASCAL *pfn_WSACreateEvent) (void); |
2870 | int (PASCAL *pfn_WSACloseEvent) (HANDLE hEvent); | |
480b0c5b GV |
2871 | int (PASCAL *pfn_socket) (int af, int type, int protocol); |
2872 | int (PASCAL *pfn_bind) (SOCKET s, const struct sockaddr *addr, int namelen); | |
2873 | int (PASCAL *pfn_connect) (SOCKET s, const struct sockaddr *addr, int namelen); | |
2874 | int (PASCAL *pfn_ioctlsocket) (SOCKET s, long cmd, u_long *argp); | |
2875 | int (PASCAL *pfn_recv) (SOCKET s, char * buf, int len, int flags); | |
2876 | int (PASCAL *pfn_send) (SOCKET s, const char * buf, int len, int flags); | |
2877 | int (PASCAL *pfn_closesocket) (SOCKET s); | |
2878 | int (PASCAL *pfn_shutdown) (SOCKET s, int how); | |
2879 | int (PASCAL *pfn_WSACleanup) (void); | |
2880 | ||
2881 | u_short (PASCAL *pfn_htons) (u_short hostshort); | |
2882 | u_short (PASCAL *pfn_ntohs) (u_short netshort); | |
2883 | unsigned long (PASCAL *pfn_inet_addr) (const char * cp); | |
2884 | int (PASCAL *pfn_gethostname) (char * name, int namelen); | |
2885 | struct hostent * (PASCAL *pfn_gethostbyname) (const char * name); | |
2886 | struct servent * (PASCAL *pfn_getservbyname) (const char * name, const char * proto); | |
ecd270eb | 2887 | int (PASCAL *pfn_getpeername) (SOCKET s, struct sockaddr *addr, int * namelen); |
962955c5 JR |
2888 | int (PASCAL *pfn_setsockopt) (SOCKET s, int level, int optname, |
2889 | const char * optval, int optlen); | |
2890 | int (PASCAL *pfn_listen) (SOCKET s, int backlog); | |
2891 | int (PASCAL *pfn_getsockname) (SOCKET s, struct sockaddr * name, | |
2892 | int * namelen); | |
2893 | SOCKET (PASCAL *pfn_accept) (SOCKET s, struct sockaddr * addr, int * addrlen); | |
2894 | int (PASCAL *pfn_recvfrom) (SOCKET s, char * buf, int len, int flags, | |
2895 | struct sockaddr * from, int * fromlen); | |
2896 | int (PASCAL *pfn_sendto) (SOCKET s, const char * buf, int len, int flags, | |
2897 | const struct sockaddr * to, int tolen); | |
2898 | ||
f1614061 RS |
2899 | /* SetHandleInformation is only needed to make sockets non-inheritable. */ |
2900 | BOOL (WINAPI *pfn_SetHandleInformation) (HANDLE object, DWORD mask, DWORD flags); | |
2901 | #ifndef HANDLE_FLAG_INHERIT | |
2902 | #define HANDLE_FLAG_INHERIT 1 | |
2903 | #endif | |
480b0c5b | 2904 | |
f249a012 RS |
2905 | HANDLE winsock_lib; |
2906 | static int winsock_inuse; | |
480b0c5b | 2907 | |
f249a012 | 2908 | BOOL |
480b0c5b GV |
2909 | term_winsock (void) |
2910 | { | |
f249a012 | 2911 | if (winsock_lib != NULL && winsock_inuse == 0) |
480b0c5b | 2912 | { |
f249a012 RS |
2913 | /* Not sure what would cause WSAENETDOWN, or even if it can happen |
2914 | after WSAStartup returns successfully, but it seems reasonable | |
2915 | to allow unloading winsock anyway in that case. */ | |
2916 | if (pfn_WSACleanup () == 0 || | |
2917 | pfn_WSAGetLastError () == WSAENETDOWN) | |
2918 | { | |
2919 | if (FreeLibrary (winsock_lib)) | |
2920 | winsock_lib = NULL; | |
2921 | return TRUE; | |
2922 | } | |
480b0c5b | 2923 | } |
f249a012 | 2924 | return FALSE; |
480b0c5b GV |
2925 | } |
2926 | ||
f249a012 RS |
2927 | BOOL |
2928 | init_winsock (int load_now) | |
480b0c5b GV |
2929 | { |
2930 | WSADATA winsockData; | |
2931 | ||
f249a012 RS |
2932 | if (winsock_lib != NULL) |
2933 | return TRUE; | |
f1614061 RS |
2934 | |
2935 | pfn_SetHandleInformation = NULL; | |
2936 | pfn_SetHandleInformation | |
2937 | = (void *) GetProcAddress (GetModuleHandle ("kernel32.dll"), | |
2938 | "SetHandleInformation"); | |
2939 | ||
64570b36 | 2940 | winsock_lib = LoadLibrary ("Ws2_32.dll"); |
480b0c5b GV |
2941 | |
2942 | if (winsock_lib != NULL) | |
2943 | { | |
2944 | /* dynamically link to socket functions */ | |
2945 | ||
2946 | #define LOAD_PROC(fn) \ | |
2947 | if ((pfn_##fn = (void *) GetProcAddress (winsock_lib, #fn)) == NULL) \ | |
2948 | goto fail; | |
2949 | ||
2950 | LOAD_PROC( WSAStartup ); | |
2951 | LOAD_PROC( WSASetLastError ); | |
2952 | LOAD_PROC( WSAGetLastError ); | |
26fb7bc4 | 2953 | LOAD_PROC( WSAEventSelect ); |
64570b36 KS |
2954 | LOAD_PROC( WSACreateEvent ); |
2955 | LOAD_PROC( WSACloseEvent ); | |
480b0c5b GV |
2956 | LOAD_PROC( socket ); |
2957 | LOAD_PROC( bind ); | |
2958 | LOAD_PROC( connect ); | |
2959 | LOAD_PROC( ioctlsocket ); | |
2960 | LOAD_PROC( recv ); | |
2961 | LOAD_PROC( send ); | |
2962 | LOAD_PROC( closesocket ); | |
2963 | LOAD_PROC( shutdown ); | |
2964 | LOAD_PROC( htons ); | |
2965 | LOAD_PROC( ntohs ); | |
2966 | LOAD_PROC( inet_addr ); | |
2967 | LOAD_PROC( gethostname ); | |
2968 | LOAD_PROC( gethostbyname ); | |
2969 | LOAD_PROC( getservbyname ); | |
ecd270eb | 2970 | LOAD_PROC( getpeername ); |
480b0c5b | 2971 | LOAD_PROC( WSACleanup ); |
962955c5 JR |
2972 | LOAD_PROC( setsockopt ); |
2973 | LOAD_PROC( listen ); | |
2974 | LOAD_PROC( getsockname ); | |
2975 | LOAD_PROC( accept ); | |
2976 | LOAD_PROC( recvfrom ); | |
2977 | LOAD_PROC( sendto ); | |
f249a012 RS |
2978 | #undef LOAD_PROC |
2979 | ||
480b0c5b GV |
2980 | /* specify version 1.1 of winsock */ |
2981 | if (pfn_WSAStartup (0x101, &winsockData) == 0) | |
2982 | { | |
f249a012 RS |
2983 | if (winsockData.wVersion != 0x101) |
2984 | goto fail; | |
2985 | ||
2986 | if (!load_now) | |
2987 | { | |
2988 | /* Report that winsock exists and is usable, but leave | |
2989 | socket functions disabled. I am assuming that calling | |
2990 | WSAStartup does not require any network interaction, | |
2991 | and in particular does not cause or require a dial-up | |
2992 | connection to be established. */ | |
2993 | ||
2994 | pfn_WSACleanup (); | |
2995 | FreeLibrary (winsock_lib); | |
2996 | winsock_lib = NULL; | |
2997 | } | |
2998 | winsock_inuse = 0; | |
2999 | return TRUE; | |
480b0c5b GV |
3000 | } |
3001 | ||
3002 | fail: | |
3003 | FreeLibrary (winsock_lib); | |
f249a012 | 3004 | winsock_lib = NULL; |
480b0c5b | 3005 | } |
f249a012 RS |
3006 | |
3007 | return FALSE; | |
480b0c5b GV |
3008 | } |
3009 | ||
3010 | ||
3011 | int h_errno = 0; | |
3012 | ||
3013 | /* function to set h_errno for compatability; map winsock error codes to | |
3014 | normal system codes where they overlap (non-overlapping definitions | |
3015 | are already in <sys/socket.h> */ | |
9bfb11f9 KS |
3016 | static void |
3017 | set_errno () | |
480b0c5b | 3018 | { |
f249a012 | 3019 | if (winsock_lib == NULL) |
480b0c5b GV |
3020 | h_errno = EINVAL; |
3021 | else | |
3022 | h_errno = pfn_WSAGetLastError (); | |
3023 | ||
3024 | switch (h_errno) | |
3025 | { | |
3026 | case WSAEACCES: h_errno = EACCES; break; | |
3027 | case WSAEBADF: h_errno = EBADF; break; | |
3028 | case WSAEFAULT: h_errno = EFAULT; break; | |
3029 | case WSAEINTR: h_errno = EINTR; break; | |
3030 | case WSAEINVAL: h_errno = EINVAL; break; | |
3031 | case WSAEMFILE: h_errno = EMFILE; break; | |
3032 | case WSAENAMETOOLONG: h_errno = ENAMETOOLONG; break; | |
3033 | case WSAENOTEMPTY: h_errno = ENOTEMPTY; break; | |
3034 | } | |
3035 | errno = h_errno; | |
3036 | } | |
3037 | ||
9bfb11f9 KS |
3038 | static void |
3039 | check_errno () | |
480b0c5b | 3040 | { |
f249a012 | 3041 | if (h_errno == 0 && winsock_lib != NULL) |
480b0c5b GV |
3042 | pfn_WSASetLastError (0); |
3043 | } | |
3044 | ||
d8fcc1b9 AI |
3045 | /* Extend strerror to handle the winsock-specific error codes. */ |
3046 | struct { | |
3047 | int errnum; | |
3048 | char * msg; | |
3049 | } _wsa_errlist[] = { | |
3050 | WSAEINTR , "Interrupted function call", | |
3051 | WSAEBADF , "Bad file descriptor", | |
3052 | WSAEACCES , "Permission denied", | |
3053 | WSAEFAULT , "Bad address", | |
3054 | WSAEINVAL , "Invalid argument", | |
3055 | WSAEMFILE , "Too many open files", | |
177c0ea7 | 3056 | |
d8fcc1b9 AI |
3057 | WSAEWOULDBLOCK , "Resource temporarily unavailable", |
3058 | WSAEINPROGRESS , "Operation now in progress", | |
3059 | WSAEALREADY , "Operation already in progress", | |
3060 | WSAENOTSOCK , "Socket operation on non-socket", | |
3061 | WSAEDESTADDRREQ , "Destination address required", | |
3062 | WSAEMSGSIZE , "Message too long", | |
3063 | WSAEPROTOTYPE , "Protocol wrong type for socket", | |
3064 | WSAENOPROTOOPT , "Bad protocol option", | |
3065 | WSAEPROTONOSUPPORT , "Protocol not supported", | |
3066 | WSAESOCKTNOSUPPORT , "Socket type not supported", | |
3067 | WSAEOPNOTSUPP , "Operation not supported", | |
3068 | WSAEPFNOSUPPORT , "Protocol family not supported", | |
3069 | WSAEAFNOSUPPORT , "Address family not supported by protocol family", | |
3070 | WSAEADDRINUSE , "Address already in use", | |
3071 | WSAEADDRNOTAVAIL , "Cannot assign requested address", | |
3072 | WSAENETDOWN , "Network is down", | |
3073 | WSAENETUNREACH , "Network is unreachable", | |
3074 | WSAENETRESET , "Network dropped connection on reset", | |
3075 | WSAECONNABORTED , "Software caused connection abort", | |
3076 | WSAECONNRESET , "Connection reset by peer", | |
3077 | WSAENOBUFS , "No buffer space available", | |
3078 | WSAEISCONN , "Socket is already connected", | |
3079 | WSAENOTCONN , "Socket is not connected", | |
3080 | WSAESHUTDOWN , "Cannot send after socket shutdown", | |
3081 | WSAETOOMANYREFS , "Too many references", /* not sure */ | |
3082 | WSAETIMEDOUT , "Connection timed out", | |
3083 | WSAECONNREFUSED , "Connection refused", | |
3084 | WSAELOOP , "Network loop", /* not sure */ | |
3085 | WSAENAMETOOLONG , "Name is too long", | |
3086 | WSAEHOSTDOWN , "Host is down", | |
3087 | WSAEHOSTUNREACH , "No route to host", | |
3088 | WSAENOTEMPTY , "Buffer not empty", /* not sure */ | |
3089 | WSAEPROCLIM , "Too many processes", | |
3090 | WSAEUSERS , "Too many users", /* not sure */ | |
3091 | WSAEDQUOT , "Double quote in host name", /* really not sure */ | |
3092 | WSAESTALE , "Data is stale", /* not sure */ | |
3093 | WSAEREMOTE , "Remote error", /* not sure */ | |
177c0ea7 | 3094 | |
d8fcc1b9 AI |
3095 | WSASYSNOTREADY , "Network subsystem is unavailable", |
3096 | WSAVERNOTSUPPORTED , "WINSOCK.DLL version out of range", | |
3097 | WSANOTINITIALISED , "Winsock not initialized successfully", | |
3098 | WSAEDISCON , "Graceful shutdown in progress", | |
3099 | #ifdef WSAENOMORE | |
3100 | WSAENOMORE , "No more operations allowed", /* not sure */ | |
3101 | WSAECANCELLED , "Operation cancelled", /* not sure */ | |
3102 | WSAEINVALIDPROCTABLE , "Invalid procedure table from service provider", | |
3103 | WSAEINVALIDPROVIDER , "Invalid service provider version number", | |
3104 | WSAEPROVIDERFAILEDINIT , "Unable to initialize a service provider", | |
aa5ee2a3 | 3105 | WSASYSCALLFAILURE , "System call failure", |
d8fcc1b9 AI |
3106 | WSASERVICE_NOT_FOUND , "Service not found", /* not sure */ |
3107 | WSATYPE_NOT_FOUND , "Class type not found", | |
3108 | WSA_E_NO_MORE , "No more resources available", /* really not sure */ | |
3109 | WSA_E_CANCELLED , "Operation already cancelled", /* really not sure */ | |
3110 | WSAEREFUSED , "Operation refused", /* not sure */ | |
3111 | #endif | |
177c0ea7 | 3112 | |
d8fcc1b9 AI |
3113 | WSAHOST_NOT_FOUND , "Host not found", |
3114 | WSATRY_AGAIN , "Authoritative host not found during name lookup", | |
3115 | WSANO_RECOVERY , "Non-recoverable error during name lookup", | |
3116 | WSANO_DATA , "Valid name, no data record of requested type", | |
3117 | ||
3118 | -1, NULL | |
3119 | }; | |
3120 | ||
3121 | char * | |
3122 | sys_strerror(int error_no) | |
3123 | { | |
3124 | int i; | |
3125 | static char unknown_msg[40]; | |
3126 | ||
a302c7ae AI |
3127 | if (error_no >= 0 && error_no < sys_nerr) |
3128 | return sys_errlist[error_no]; | |
d8fcc1b9 AI |
3129 | |
3130 | for (i = 0; _wsa_errlist[i].errnum >= 0; i++) | |
3131 | if (_wsa_errlist[i].errnum == error_no) | |
3132 | return _wsa_errlist[i].msg; | |
3133 | ||
3134 | sprintf(unknown_msg, "Unidentified error: %d", error_no); | |
3135 | return unknown_msg; | |
3136 | } | |
3137 | ||
480b0c5b GV |
3138 | /* [andrewi 3-May-96] I've had conflicting results using both methods, |
3139 | but I believe the method of keeping the socket handle separate (and | |
3140 | insuring it is not inheritable) is the correct one. */ | |
3141 | ||
3142 | //#define SOCK_REPLACE_HANDLE | |
3143 | ||
3144 | #ifdef SOCK_REPLACE_HANDLE | |
3145 | #define SOCK_HANDLE(fd) ((SOCKET) _get_osfhandle (fd)) | |
3146 | #else | |
3147 | #define SOCK_HANDLE(fd) ((SOCKET) fd_info[fd].hnd) | |
3148 | #endif | |
3149 | ||
962955c5 JR |
3150 | int socket_to_fd (SOCKET s); |
3151 | ||
480b0c5b GV |
3152 | int |
3153 | sys_socket(int af, int type, int protocol) | |
3154 | { | |
962955c5 | 3155 | SOCKET s; |
480b0c5b | 3156 | |
f249a012 | 3157 | if (winsock_lib == NULL) |
480b0c5b GV |
3158 | { |
3159 | h_errno = ENETDOWN; | |
3160 | return INVALID_SOCKET; | |
3161 | } | |
3162 | ||
3163 | check_errno (); | |
3164 | ||
3165 | /* call the real socket function */ | |
962955c5 | 3166 | s = pfn_socket (af, type, protocol); |
177c0ea7 | 3167 | |
480b0c5b | 3168 | if (s != INVALID_SOCKET) |
962955c5 | 3169 | return socket_to_fd (s); |
480b0c5b | 3170 | |
962955c5 JR |
3171 | set_errno (); |
3172 | return -1; | |
3173 | } | |
3174 | ||
3175 | /* Convert a SOCKET to a file descriptor. */ | |
3176 | int | |
3177 | socket_to_fd (SOCKET s) | |
3178 | { | |
3179 | int fd; | |
3180 | child_process * cp; | |
3181 | ||
3182 | /* Although under NT 3.5 _open_osfhandle will accept a socket | |
3183 | handle, if opened with SO_OPENTYPE == SO_SYNCHRONOUS_NONALERT, | |
3184 | that does not work under NT 3.1. However, we can get the same | |
3185 | effect by using a backdoor function to replace an existing | |
3186 | descriptor handle with the one we want. */ | |
3187 | ||
3188 | /* allocate a file descriptor (with appropriate flags) */ | |
3189 | fd = _open ("NUL:", _O_RDWR); | |
3190 | if (fd >= 0) | |
3191 | { | |
480b0c5b | 3192 | #ifdef SOCK_REPLACE_HANDLE |
962955c5 JR |
3193 | /* now replace handle to NUL with our socket handle */ |
3194 | CloseHandle ((HANDLE) _get_osfhandle (fd)); | |
3195 | _free_osfhnd (fd); | |
3196 | _set_osfhnd (fd, s); | |
3197 | /* setmode (fd, _O_BINARY); */ | |
480b0c5b | 3198 | #else |
962955c5 JR |
3199 | /* Make a non-inheritable copy of the socket handle. Note |
3200 | that it is possible that sockets aren't actually kernel | |
3201 | handles, which appears to be the case on Windows 9x when | |
3202 | the MS Proxy winsock client is installed. */ | |
3203 | { | |
3204 | /* Apparently there is a bug in NT 3.51 with some service | |
3205 | packs, which prevents using DuplicateHandle to make a | |
3206 | socket handle non-inheritable (causes WSACleanup to | |
3207 | hang). The work-around is to use SetHandleInformation | |
3208 | instead if it is available and implemented. */ | |
3209 | if (pfn_SetHandleInformation) | |
480b0c5b | 3210 | { |
962955c5 JR |
3211 | pfn_SetHandleInformation ((HANDLE) s, HANDLE_FLAG_INHERIT, 0); |
3212 | } | |
3213 | else | |
3214 | { | |
3215 | HANDLE parent = GetCurrentProcess (); | |
3216 | HANDLE new_s = INVALID_HANDLE_VALUE; | |
3217 | ||
3218 | if (DuplicateHandle (parent, | |
3219 | (HANDLE) s, | |
3220 | parent, | |
3221 | &new_s, | |
3222 | 0, | |
3223 | FALSE, | |
3224 | DUPLICATE_SAME_ACCESS)) | |
f1614061 | 3225 | { |
962955c5 JR |
3226 | /* It is possible that DuplicateHandle succeeds even |
3227 | though the socket wasn't really a kernel handle, | |
3228 | because a real handle has the same value. So | |
3229 | test whether the new handle really is a socket. */ | |
3230 | long nonblocking = 0; | |
3231 | if (pfn_ioctlsocket ((SOCKET) new_s, FIONBIO, &nonblocking) == 0) | |
ca149beb | 3232 | { |
962955c5 JR |
3233 | pfn_closesocket (s); |
3234 | s = (SOCKET) new_s; | |
3235 | } | |
3236 | else | |
3237 | { | |
3238 | CloseHandle (new_s); | |
3239 | } | |
177c0ea7 | 3240 | } |
480b0c5b | 3241 | } |
962955c5 JR |
3242 | } |
3243 | fd_info[fd].hnd = (HANDLE) s; | |
480b0c5b GV |
3244 | #endif |
3245 | ||
962955c5 JR |
3246 | /* set our own internal flags */ |
3247 | fd_info[fd].flags = FILE_SOCKET | FILE_BINARY | FILE_READ | FILE_WRITE; | |
480b0c5b | 3248 | |
962955c5 JR |
3249 | cp = new_child (); |
3250 | if (cp) | |
3251 | { | |
3252 | cp->fd = fd; | |
3253 | cp->status = STATUS_READ_ACKNOWLEDGED; | |
480b0c5b | 3254 | |
962955c5 JR |
3255 | /* attach child_process to fd_info */ |
3256 | if (fd_info[ fd ].cp != NULL) | |
3257 | { | |
3258 | DebPrint (("sys_socket: fd_info[%d] apparently in use!\n", fd)); | |
3259 | abort (); | |
480b0c5b GV |
3260 | } |
3261 | ||
962955c5 JR |
3262 | fd_info[ fd ].cp = cp; |
3263 | ||
3264 | /* success! */ | |
3265 | winsock_inuse++; /* count open sockets */ | |
3266 | return fd; | |
480b0c5b | 3267 | } |
480b0c5b | 3268 | |
962955c5 JR |
3269 | /* clean up */ |
3270 | _close (fd); | |
3271 | } | |
3272 | pfn_closesocket (s); | |
3273 | h_errno = EMFILE; | |
480b0c5b GV |
3274 | return -1; |
3275 | } | |
3276 | ||
3277 | ||
3278 | int | |
3279 | sys_bind (int s, const struct sockaddr * addr, int namelen) | |
3280 | { | |
f249a012 | 3281 | if (winsock_lib == NULL) |
480b0c5b GV |
3282 | { |
3283 | h_errno = ENOTSOCK; | |
3284 | return SOCKET_ERROR; | |
3285 | } | |
3286 | ||
3287 | check_errno (); | |
3288 | if (fd_info[s].flags & FILE_SOCKET) | |
3289 | { | |
3290 | int rc = pfn_bind (SOCK_HANDLE (s), addr, namelen); | |
3291 | if (rc == SOCKET_ERROR) | |
3292 | set_errno (); | |
3293 | return rc; | |
3294 | } | |
3295 | h_errno = ENOTSOCK; | |
3296 | return SOCKET_ERROR; | |
3297 | } | |
3298 | ||
3299 | ||
3300 | int | |
3301 | sys_connect (int s, const struct sockaddr * name, int namelen) | |
3302 | { | |
f249a012 | 3303 | if (winsock_lib == NULL) |
480b0c5b GV |
3304 | { |
3305 | h_errno = ENOTSOCK; | |
3306 | return SOCKET_ERROR; | |
3307 | } | |
3308 | ||
3309 | check_errno (); | |
3310 | if (fd_info[s].flags & FILE_SOCKET) | |
3311 | { | |
3312 | int rc = pfn_connect (SOCK_HANDLE (s), name, namelen); | |
3313 | if (rc == SOCKET_ERROR) | |
3314 | set_errno (); | |
3315 | return rc; | |
3316 | } | |
3317 | h_errno = ENOTSOCK; | |
3318 | return SOCKET_ERROR; | |
3319 | } | |
3320 | ||
3321 | u_short | |
3322 | sys_htons (u_short hostshort) | |
3323 | { | |
f249a012 | 3324 | return (winsock_lib != NULL) ? |
480b0c5b GV |
3325 | pfn_htons (hostshort) : hostshort; |
3326 | } | |
3327 | ||
3328 | u_short | |
3329 | sys_ntohs (u_short netshort) | |
3330 | { | |
f249a012 | 3331 | return (winsock_lib != NULL) ? |
480b0c5b GV |
3332 | pfn_ntohs (netshort) : netshort; |
3333 | } | |
3334 | ||
3335 | unsigned long | |
3336 | sys_inet_addr (const char * cp) | |
3337 | { | |
f249a012 | 3338 | return (winsock_lib != NULL) ? |
480b0c5b GV |
3339 | pfn_inet_addr (cp) : INADDR_NONE; |
3340 | } | |
3341 | ||
3342 | int | |
3343 | sys_gethostname (char * name, int namelen) | |
3344 | { | |
f249a012 | 3345 | if (winsock_lib != NULL) |
480b0c5b GV |
3346 | return pfn_gethostname (name, namelen); |
3347 | ||
3348 | if (namelen > MAX_COMPUTERNAME_LENGTH) | |
a302c7ae | 3349 | return !GetComputerName (name, (DWORD *)&namelen); |
480b0c5b GV |
3350 | |
3351 | h_errno = EFAULT; | |
3352 | return SOCKET_ERROR; | |
3353 | } | |
3354 | ||
3355 | struct hostent * | |
3356 | sys_gethostbyname(const char * name) | |
3357 | { | |
3358 | struct hostent * host; | |
3359 | ||
f249a012 | 3360 | if (winsock_lib == NULL) |
480b0c5b GV |
3361 | { |
3362 | h_errno = ENETDOWN; | |
3363 | return NULL; | |
3364 | } | |
3365 | ||
3366 | check_errno (); | |
3367 | host = pfn_gethostbyname (name); | |
3368 | if (!host) | |
3369 | set_errno (); | |
3370 | return host; | |
3371 | } | |
3372 | ||
3373 | struct servent * | |
3374 | sys_getservbyname(const char * name, const char * proto) | |
3375 | { | |
3376 | struct servent * serv; | |
3377 | ||
f249a012 | 3378 | if (winsock_lib == NULL) |
480b0c5b GV |
3379 | { |
3380 | h_errno = ENETDOWN; | |
3381 | return NULL; | |
3382 | } | |
3383 | ||
3384 | check_errno (); | |
3385 | serv = pfn_getservbyname (name, proto); | |
3386 | if (!serv) | |
3387 | set_errno (); | |
3388 | return serv; | |
3389 | } | |
3390 | ||
ecd270eb JR |
3391 | int |
3392 | sys_getpeername (int s, struct sockaddr *addr, int * namelen) | |
3393 | { | |
3394 | if (winsock_lib == NULL) | |
3395 | { | |
3396 | h_errno = ENETDOWN; | |
3397 | return SOCKET_ERROR; | |
3398 | } | |
3399 | ||
3400 | check_errno (); | |
3401 | if (fd_info[s].flags & FILE_SOCKET) | |
3402 | { | |
3403 | int rc = pfn_getpeername (SOCK_HANDLE (s), addr, namelen); | |
3404 | if (rc == SOCKET_ERROR) | |
3405 | set_errno (); | |
3406 | return rc; | |
3407 | } | |
3408 | h_errno = ENOTSOCK; | |
3409 | return SOCKET_ERROR; | |
3410 | } | |
3411 | ||
3412 | ||
380961a6 GV |
3413 | int |
3414 | sys_shutdown (int s, int how) | |
3415 | { | |
380961a6 GV |
3416 | if (winsock_lib == NULL) |
3417 | { | |
3418 | h_errno = ENETDOWN; | |
3419 | return SOCKET_ERROR; | |
3420 | } | |
3421 | ||
3422 | check_errno (); | |
3423 | if (fd_info[s].flags & FILE_SOCKET) | |
3424 | { | |
3425 | int rc = pfn_shutdown (SOCK_HANDLE (s), how); | |
962955c5 JR |
3426 | if (rc == SOCKET_ERROR) |
3427 | set_errno (); | |
3428 | return rc; | |
3429 | } | |
3430 | h_errno = ENOTSOCK; | |
3431 | return SOCKET_ERROR; | |
3432 | } | |
3433 | ||
3434 | int | |
a5a389bb | 3435 | sys_setsockopt (int s, int level, int optname, const void * optval, int optlen) |
962955c5 JR |
3436 | { |
3437 | if (winsock_lib == NULL) | |
3438 | { | |
3439 | h_errno = ENETDOWN; | |
3440 | return SOCKET_ERROR; | |
3441 | } | |
3442 | ||
3443 | check_errno (); | |
3444 | if (fd_info[s].flags & FILE_SOCKET) | |
3445 | { | |
3446 | int rc = pfn_setsockopt (SOCK_HANDLE (s), level, optname, | |
a5a389bb | 3447 | (const char *)optval, optlen); |
962955c5 JR |
3448 | if (rc == SOCKET_ERROR) |
3449 | set_errno (); | |
3450 | return rc; | |
3451 | } | |
3452 | h_errno = ENOTSOCK; | |
177c0ea7 | 3453 | return SOCKET_ERROR; |
962955c5 JR |
3454 | } |
3455 | ||
3456 | int | |
3457 | sys_listen (int s, int backlog) | |
3458 | { | |
3459 | if (winsock_lib == NULL) | |
3460 | { | |
3461 | h_errno = ENETDOWN; | |
3462 | return SOCKET_ERROR; | |
3463 | } | |
3464 | ||
3465 | check_errno (); | |
3466 | if (fd_info[s].flags & FILE_SOCKET) | |
3467 | { | |
3468 | int rc = pfn_listen (SOCK_HANDLE (s), backlog); | |
3469 | if (rc == SOCKET_ERROR) | |
3470 | set_errno (); | |
26fb7bc4 | 3471 | else |
64570b36 | 3472 | fd_info[s].flags |= FILE_LISTEN; |
962955c5 JR |
3473 | return rc; |
3474 | } | |
3475 | h_errno = ENOTSOCK; | |
177c0ea7 | 3476 | return SOCKET_ERROR; |
962955c5 JR |
3477 | } |
3478 | ||
3479 | int | |
3480 | sys_getsockname (int s, struct sockaddr * name, int * namelen) | |
3481 | { | |
3482 | if (winsock_lib == NULL) | |
3483 | { | |
3484 | h_errno = ENETDOWN; | |
3485 | return SOCKET_ERROR; | |
3486 | } | |
3487 | ||
3488 | check_errno (); | |
3489 | if (fd_info[s].flags & FILE_SOCKET) | |
3490 | { | |
3491 | int rc = pfn_getsockname (SOCK_HANDLE (s), name, namelen); | |
3492 | if (rc == SOCKET_ERROR) | |
3493 | set_errno (); | |
3494 | return rc; | |
3495 | } | |
3496 | h_errno = ENOTSOCK; | |
177c0ea7 | 3497 | return SOCKET_ERROR; |
962955c5 JR |
3498 | } |
3499 | ||
3500 | int | |
3501 | sys_accept (int s, struct sockaddr * addr, int * addrlen) | |
3502 | { | |
3503 | if (winsock_lib == NULL) | |
3504 | { | |
3505 | h_errno = ENETDOWN; | |
3506 | return -1; | |
3507 | } | |
3508 | ||
3509 | check_errno (); | |
26fb7bc4 | 3510 | if (fd_info[s].flags & FILE_LISTEN) |
962955c5 | 3511 | { |
a0ad1860 | 3512 | SOCKET t = pfn_accept (SOCK_HANDLE (s), addr, addrlen); |
64570b36 KS |
3513 | int fd = -1; |
3514 | if (t == INVALID_SOCKET) | |
3515 | set_errno (); | |
3516 | else | |
3517 | fd = socket_to_fd (t); | |
962955c5 | 3518 | |
64570b36 KS |
3519 | fd_info[s].cp->status = STATUS_READ_ACKNOWLEDGED; |
3520 | ResetEvent (fd_info[s].cp->char_avail); | |
3521 | return fd; | |
962955c5 JR |
3522 | } |
3523 | h_errno = ENOTSOCK; | |
3524 | return -1; | |
3525 | } | |
3526 | ||
3527 | int | |
3528 | sys_recvfrom (int s, char * buf, int len, int flags, | |
3529 | struct sockaddr * from, int * fromlen) | |
3530 | { | |
3531 | if (winsock_lib == NULL) | |
3532 | { | |
3533 | h_errno = ENETDOWN; | |
3534 | return SOCKET_ERROR; | |
3535 | } | |
3536 | ||
3537 | check_errno (); | |
3538 | if (fd_info[s].flags & FILE_SOCKET) | |
3539 | { | |
3540 | int rc = pfn_recvfrom (SOCK_HANDLE (s), buf, len, flags, from, fromlen); | |
3541 | if (rc == SOCKET_ERROR) | |
3542 | set_errno (); | |
3543 | return rc; | |
3544 | } | |
3545 | h_errno = ENOTSOCK; | |
3546 | return SOCKET_ERROR; | |
3547 | } | |
3548 | ||
3549 | int | |
3550 | sys_sendto (int s, const char * buf, int len, int flags, | |
3551 | const struct sockaddr * to, int tolen) | |
3552 | { | |
3553 | if (winsock_lib == NULL) | |
3554 | { | |
3555 | h_errno = ENETDOWN; | |
3556 | return SOCKET_ERROR; | |
3557 | } | |
3558 | ||
3559 | check_errno (); | |
3560 | if (fd_info[s].flags & FILE_SOCKET) | |
3561 | { | |
3562 | int rc = pfn_sendto (SOCK_HANDLE (s), buf, len, flags, to, tolen); | |
380961a6 GV |
3563 | if (rc == SOCKET_ERROR) |
3564 | set_errno (); | |
3565 | return rc; | |
3566 | } | |
3567 | h_errno = ENOTSOCK; | |
3568 | return SOCKET_ERROR; | |
3569 | } | |
3570 | ||
ecd270eb JR |
3571 | /* Windows does not have an fcntl function. Provide an implementation |
3572 | solely for making sockets non-blocking. */ | |
3573 | int | |
3574 | fcntl (int s, int cmd, int options) | |
3575 | { | |
3576 | if (winsock_lib == NULL) | |
3577 | { | |
3578 | h_errno = ENETDOWN; | |
3579 | return -1; | |
3580 | } | |
3581 | ||
3582 | check_errno (); | |
3583 | if (fd_info[s].flags & FILE_SOCKET) | |
3584 | { | |
3585 | if (cmd == F_SETFL && options == O_NDELAY) | |
3586 | { | |
3587 | unsigned long nblock = 1; | |
3588 | int rc = pfn_ioctlsocket (SOCK_HANDLE (s), FIONBIO, &nblock); | |
3589 | if (rc == SOCKET_ERROR) | |
3590 | set_errno(); | |
3591 | /* Keep track of the fact that we set this to non-blocking. */ | |
3592 | fd_info[s].flags |= FILE_NDELAY; | |
3593 | return rc; | |
3594 | } | |
3595 | else | |
3596 | { | |
3597 | h_errno = EINVAL; | |
3598 | return SOCKET_ERROR; | |
3599 | } | |
3600 | } | |
3601 | h_errno = ENOTSOCK; | |
3602 | return SOCKET_ERROR; | |
3603 | } | |
3604 | ||
480b0c5b GV |
3605 | #endif /* HAVE_SOCKETS */ |
3606 | ||
3607 | ||
3608 | /* Shadow main io functions: we need to handle pipes and sockets more | |
3609 | intelligently, and implement non-blocking mode as well. */ | |
3610 | ||
3611 | int | |
3612 | sys_close (int fd) | |
3613 | { | |
3614 | int rc; | |
3615 | ||
7559f399 | 3616 | if (fd < 0) |
480b0c5b GV |
3617 | { |
3618 | errno = EBADF; | |
3619 | return -1; | |
3620 | } | |
3621 | ||
7559f399 | 3622 | if (fd < MAXDESC && fd_info[fd].cp) |
480b0c5b GV |
3623 | { |
3624 | child_process * cp = fd_info[fd].cp; | |
3625 | ||
3626 | fd_info[fd].cp = NULL; | |
3627 | ||
3628 | if (CHILD_ACTIVE (cp)) | |
3629 | { | |
3630 | /* if last descriptor to active child_process then cleanup */ | |
3631 | int i; | |
3632 | for (i = 0; i < MAXDESC; i++) | |
3633 | { | |
3634 | if (i == fd) | |
3635 | continue; | |
3636 | if (fd_info[i].cp == cp) | |
3637 | break; | |
3638 | } | |
3639 | if (i == MAXDESC) | |
3640 | { | |
f249a012 | 3641 | #ifdef HAVE_SOCKETS |
480b0c5b GV |
3642 | if (fd_info[fd].flags & FILE_SOCKET) |
3643 | { | |
f249a012 RS |
3644 | #ifndef SOCK_REPLACE_HANDLE |
3645 | if (winsock_lib == NULL) abort (); | |
480b0c5b GV |
3646 | |
3647 | pfn_shutdown (SOCK_HANDLE (fd), 2); | |
3648 | rc = pfn_closesocket (SOCK_HANDLE (fd)); | |
f249a012 RS |
3649 | #endif |
3650 | winsock_inuse--; /* count open sockets */ | |
480b0c5b GV |
3651 | } |
3652 | #endif | |
3653 | delete_child (cp); | |
3654 | } | |
3655 | } | |
3656 | } | |
3657 | ||
3658 | /* Note that sockets do not need special treatment here (at least on | |
e9e23e23 | 3659 | NT and Windows 95 using the standard tcp/ip stacks) - it appears that |
480b0c5b GV |
3660 | closesocket is equivalent to CloseHandle, which is to be expected |
3661 | because socket handles are fully fledged kernel handles. */ | |
3662 | rc = _close (fd); | |
3663 | ||
7559f399 | 3664 | if (rc == 0 && fd < MAXDESC) |
480b0c5b GV |
3665 | fd_info[fd].flags = 0; |
3666 | ||
3667 | return rc; | |
3668 | } | |
3669 | ||
3670 | int | |
3671 | sys_dup (int fd) | |
3672 | { | |
3673 | int new_fd; | |
3674 | ||
3675 | new_fd = _dup (fd); | |
7559f399 | 3676 | if (new_fd >= 0 && new_fd < MAXDESC) |
480b0c5b GV |
3677 | { |
3678 | /* duplicate our internal info as well */ | |
3679 | fd_info[new_fd] = fd_info[fd]; | |
3680 | } | |
3681 | return new_fd; | |
3682 | } | |
3683 | ||
3684 | ||
3685 | int | |
3686 | sys_dup2 (int src, int dst) | |
3687 | { | |
3688 | int rc; | |
3689 | ||
3690 | if (dst < 0 || dst >= MAXDESC) | |
3691 | { | |
3692 | errno = EBADF; | |
3693 | return -1; | |
3694 | } | |
3695 | ||
3696 | /* make sure we close the destination first if it's a pipe or socket */ | |
3697 | if (src != dst && fd_info[dst].flags != 0) | |
3698 | sys_close (dst); | |
177c0ea7 | 3699 | |
480b0c5b GV |
3700 | rc = _dup2 (src, dst); |
3701 | if (rc == 0) | |
3702 | { | |
3703 | /* duplicate our internal info as well */ | |
3704 | fd_info[dst] = fd_info[src]; | |
3705 | } | |
3706 | return rc; | |
3707 | } | |
3708 | ||
480b0c5b GV |
3709 | /* Unix pipe() has only one arg */ |
3710 | int | |
3711 | sys_pipe (int * phandles) | |
3712 | { | |
3713 | int rc; | |
3714 | unsigned flags; | |
480b0c5b | 3715 | |
76b3903d GV |
3716 | /* make pipe handles non-inheritable; when we spawn a child, we |
3717 | replace the relevant handle with an inheritable one. Also put | |
3718 | pipes into binary mode; we will do text mode translation ourselves | |
3719 | if required. */ | |
3720 | rc = _pipe (phandles, 0, _O_NOINHERIT | _O_BINARY); | |
480b0c5b GV |
3721 | |
3722 | if (rc == 0) | |
3723 | { | |
cb72110d JR |
3724 | /* Protect against overflow, since Windows can open more handles than |
3725 | our fd_info array has room for. */ | |
3726 | if (phandles[0] >= MAXDESC || phandles[1] >= MAXDESC) | |
3727 | { | |
3728 | _close (phandles[0]); | |
3729 | _close (phandles[1]); | |
3730 | rc = -1; | |
3731 | } | |
3732 | else | |
3733 | { | |
3734 | flags = FILE_PIPE | FILE_READ | FILE_BINARY; | |
3735 | fd_info[phandles[0]].flags = flags; | |
480b0c5b | 3736 | |
cb72110d JR |
3737 | flags = FILE_PIPE | FILE_WRITE | FILE_BINARY; |
3738 | fd_info[phandles[1]].flags = flags; | |
3739 | } | |
480b0c5b GV |
3740 | } |
3741 | ||
3742 | return rc; | |
3743 | } | |
3744 | ||
f7554349 | 3745 | /* From ntproc.c */ |
78806724 | 3746 | extern int w32_pipe_read_delay; |
f7554349 | 3747 | |
480b0c5b GV |
3748 | /* Function to do blocking read of one byte, needed to implement |
3749 | select. It is only allowed on sockets and pipes. */ | |
3750 | int | |
3751 | _sys_read_ahead (int fd) | |
3752 | { | |
3753 | child_process * cp; | |
3754 | int rc; | |
3755 | ||
3756 | if (fd < 0 || fd >= MAXDESC) | |
3757 | return STATUS_READ_ERROR; | |
3758 | ||
3759 | cp = fd_info[fd].cp; | |
3760 | ||
3761 | if (cp == NULL || cp->fd != fd || cp->status != STATUS_READ_READY) | |
3762 | return STATUS_READ_ERROR; | |
3763 | ||
3764 | if ((fd_info[fd].flags & (FILE_PIPE | FILE_SOCKET)) == 0 | |
3765 | || (fd_info[fd].flags & FILE_READ) == 0) | |
3766 | { | |
3767 | DebPrint (("_sys_read_ahead: internal error: fd %d is not a pipe or socket!\n", fd)); | |
3768 | abort (); | |
3769 | } | |
177c0ea7 | 3770 | |
480b0c5b | 3771 | cp->status = STATUS_READ_IN_PROGRESS; |
177c0ea7 | 3772 | |
480b0c5b | 3773 | if (fd_info[fd].flags & FILE_PIPE) |
f7554349 | 3774 | { |
f7554349 KH |
3775 | rc = _read (fd, &cp->chr, sizeof (char)); |
3776 | ||
3777 | /* Give subprocess time to buffer some more output for us before | |
e9e23e23 | 3778 | reporting that input is available; we need this because Windows 95 |
f7554349 KH |
3779 | connects DOS programs to pipes by making the pipe appear to be |
3780 | the normal console stdout - as a result most DOS programs will | |
3781 | write to stdout without buffering, ie. one character at a | |
fbd6baed | 3782 | time. Even some W32 programs do this - "dir" in a command |
f7554349 KH |
3783 | shell on NT is very slow if we don't do this. */ |
3784 | if (rc > 0) | |
3785 | { | |
78806724 | 3786 | int wait = w32_pipe_read_delay; |
f7554349 KH |
3787 | |
3788 | if (wait > 0) | |
3789 | Sleep (wait); | |
3790 | else if (wait < 0) | |
3791 | while (++wait <= 0) | |
3792 | /* Yield remainder of our time slice, effectively giving a | |
3793 | temporary priority boost to the child process. */ | |
3794 | Sleep (0); | |
3795 | } | |
3796 | } | |
480b0c5b GV |
3797 | #ifdef HAVE_SOCKETS |
3798 | else if (fd_info[fd].flags & FILE_SOCKET) | |
ecd270eb JR |
3799 | { |
3800 | unsigned long nblock = 0; | |
3801 | /* We always want this to block, so temporarily disable NDELAY. */ | |
3802 | if (fd_info[fd].flags & FILE_NDELAY) | |
3803 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONBIO, &nblock); | |
3804 | ||
3805 | rc = pfn_recv (SOCK_HANDLE (fd), &cp->chr, sizeof (char), 0); | |
3806 | ||
3807 | if (fd_info[fd].flags & FILE_NDELAY) | |
3808 | { | |
3809 | nblock = 1; | |
3810 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONBIO, &nblock); | |
3811 | } | |
3812 | } | |
480b0c5b | 3813 | #endif |
177c0ea7 | 3814 | |
480b0c5b GV |
3815 | if (rc == sizeof (char)) |
3816 | cp->status = STATUS_READ_SUCCEEDED; | |
3817 | else | |
3818 | cp->status = STATUS_READ_FAILED; | |
3819 | ||
3820 | return cp->status; | |
3821 | } | |
3822 | ||
9bfb11f9 KS |
3823 | int |
3824 | _sys_wait_accept (int fd) | |
64570b36 KS |
3825 | { |
3826 | HANDLE hEv; | |
3827 | child_process * cp; | |
3828 | int rc; | |
3829 | ||
3830 | if (fd < 0 || fd >= MAXDESC) | |
3831 | return STATUS_READ_ERROR; | |
3832 | ||
3833 | cp = fd_info[fd].cp; | |
3834 | ||
3835 | if (cp == NULL || cp->fd != fd || cp->status != STATUS_READ_READY) | |
3836 | return STATUS_READ_ERROR; | |
3837 | ||
3838 | cp->status = STATUS_READ_FAILED; | |
3839 | ||
3840 | hEv = pfn_WSACreateEvent (); | |
3841 | rc = pfn_WSAEventSelect (SOCK_HANDLE (fd), hEv, FD_ACCEPT); | |
3842 | if (rc != SOCKET_ERROR) | |
3843 | { | |
3844 | rc = WaitForSingleObject (hEv, INFINITE); | |
3845 | pfn_WSAEventSelect (SOCK_HANDLE (fd), NULL, 0); | |
64570b36 KS |
3846 | if (rc == WAIT_OBJECT_0) |
3847 | cp->status = STATUS_READ_SUCCEEDED; | |
3848 | } | |
7046f191 | 3849 | pfn_WSACloseEvent (hEv); |
64570b36 KS |
3850 | |
3851 | return cp->status; | |
3852 | } | |
3853 | ||
480b0c5b GV |
3854 | int |
3855 | sys_read (int fd, char * buffer, unsigned int count) | |
3856 | { | |
3857 | int nchars; | |
480b0c5b GV |
3858 | int to_read; |
3859 | DWORD waiting; | |
76b3903d | 3860 | char * orig_buffer = buffer; |
480b0c5b | 3861 | |
7559f399 | 3862 | if (fd < 0) |
480b0c5b GV |
3863 | { |
3864 | errno = EBADF; | |
3865 | return -1; | |
3866 | } | |
3867 | ||
7559f399 | 3868 | if (fd < MAXDESC && fd_info[fd].flags & (FILE_PIPE | FILE_SOCKET)) |
480b0c5b GV |
3869 | { |
3870 | child_process *cp = fd_info[fd].cp; | |
3871 | ||
3872 | if ((fd_info[fd].flags & FILE_READ) == 0) | |
3873 | { | |
3874 | errno = EBADF; | |
3875 | return -1; | |
3876 | } | |
3877 | ||
76b3903d GV |
3878 | nchars = 0; |
3879 | ||
3880 | /* re-read CR carried over from last read */ | |
3881 | if (fd_info[fd].flags & FILE_LAST_CR) | |
3882 | { | |
3883 | if (fd_info[fd].flags & FILE_BINARY) abort (); | |
3884 | *buffer++ = 0x0d; | |
3885 | count--; | |
3886 | nchars++; | |
f52eb3ef | 3887 | fd_info[fd].flags &= ~FILE_LAST_CR; |
76b3903d GV |
3888 | } |
3889 | ||
480b0c5b GV |
3890 | /* presence of a child_process structure means we are operating in |
3891 | non-blocking mode - otherwise we just call _read directly. | |
3892 | Note that the child_process structure might be missing because | |
3893 | reap_subprocess has been called; in this case the pipe is | |
3894 | already broken, so calling _read on it is okay. */ | |
3895 | if (cp) | |
3896 | { | |
3897 | int current_status = cp->status; | |
3898 | ||
3899 | switch (current_status) | |
3900 | { | |
3901 | case STATUS_READ_FAILED: | |
3902 | case STATUS_READ_ERROR: | |
f52eb3ef GV |
3903 | /* report normal EOF if nothing in buffer */ |
3904 | if (nchars <= 0) | |
3905 | fd_info[fd].flags |= FILE_AT_EOF; | |
3906 | return nchars; | |
480b0c5b GV |
3907 | |
3908 | case STATUS_READ_READY: | |
3909 | case STATUS_READ_IN_PROGRESS: | |
3910 | DebPrint (("sys_read called when read is in progress\n")); | |
3911 | errno = EWOULDBLOCK; | |
3912 | return -1; | |
3913 | ||
3914 | case STATUS_READ_SUCCEEDED: | |
3915 | /* consume read-ahead char */ | |
3916 | *buffer++ = cp->chr; | |
3917 | count--; | |
76b3903d | 3918 | nchars++; |
480b0c5b GV |
3919 | cp->status = STATUS_READ_ACKNOWLEDGED; |
3920 | ResetEvent (cp->char_avail); | |
3921 | ||
3922 | case STATUS_READ_ACKNOWLEDGED: | |
3923 | break; | |
3924 | ||
3925 | default: | |
3926 | DebPrint (("sys_read: bad status %d\n", current_status)); | |
3927 | errno = EBADF; | |
3928 | return -1; | |
3929 | } | |
3930 | ||
3931 | if (fd_info[fd].flags & FILE_PIPE) | |
3932 | { | |
3933 | PeekNamedPipe ((HANDLE) _get_osfhandle (fd), NULL, 0, NULL, &waiting, NULL); | |
3934 | to_read = min (waiting, (DWORD) count); | |
f52eb3ef GV |
3935 | |
3936 | if (to_read > 0) | |
3937 | nchars += _read (fd, buffer, to_read); | |
480b0c5b GV |
3938 | } |
3939 | #ifdef HAVE_SOCKETS | |
3940 | else /* FILE_SOCKET */ | |
3941 | { | |
f249a012 | 3942 | if (winsock_lib == NULL) abort (); |
480b0c5b GV |
3943 | |
3944 | /* do the equivalent of a non-blocking read */ | |
3945 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONREAD, &waiting); | |
76b3903d | 3946 | if (waiting == 0 && nchars == 0) |
480b0c5b GV |
3947 | { |
3948 | h_errno = errno = EWOULDBLOCK; | |
3949 | return -1; | |
3950 | } | |
3951 | ||
480b0c5b GV |
3952 | if (waiting) |
3953 | { | |
3954 | /* always use binary mode for sockets */ | |
76b3903d GV |
3955 | int res = pfn_recv (SOCK_HANDLE (fd), buffer, count, 0); |
3956 | if (res == SOCKET_ERROR) | |
480b0c5b GV |
3957 | { |
3958 | DebPrint(("sys_read.recv failed with error %d on socket %ld\n", | |
3959 | pfn_WSAGetLastError (), SOCK_HANDLE (fd))); | |
76b3903d GV |
3960 | set_errno (); |
3961 | return -1; | |
480b0c5b | 3962 | } |
76b3903d | 3963 | nchars += res; |
480b0c5b GV |
3964 | } |
3965 | } | |
3966 | #endif | |
3967 | } | |
3968 | else | |
f52eb3ef GV |
3969 | { |
3970 | int nread = _read (fd, buffer, count); | |
3971 | if (nread >= 0) | |
3972 | nchars += nread; | |
3973 | else if (nchars == 0) | |
3974 | nchars = nread; | |
3975 | } | |
76b3903d | 3976 | |
f52eb3ef GV |
3977 | if (nchars <= 0) |
3978 | fd_info[fd].flags |= FILE_AT_EOF; | |
76b3903d | 3979 | /* Perform text mode translation if required. */ |
f52eb3ef | 3980 | else if ((fd_info[fd].flags & FILE_BINARY) == 0) |
76b3903d GV |
3981 | { |
3982 | nchars = crlf_to_lf (nchars, orig_buffer); | |
3983 | /* If buffer contains only CR, return that. To be absolutely | |
3984 | sure we should attempt to read the next char, but in | |
3985 | practice a CR to be followed by LF would not appear by | |
3986 | itself in the buffer. */ | |
3987 | if (nchars > 1 && orig_buffer[nchars - 1] == 0x0d) | |
3988 | { | |
3989 | fd_info[fd].flags |= FILE_LAST_CR; | |
3990 | nchars--; | |
3991 | } | |
76b3903d | 3992 | } |
480b0c5b GV |
3993 | } |
3994 | else | |
3995 | nchars = _read (fd, buffer, count); | |
3996 | ||
76b3903d | 3997 | return nchars; |
480b0c5b GV |
3998 | } |
3999 | ||
4000 | /* For now, don't bother with a non-blocking mode */ | |
4001 | int | |
4002 | sys_write (int fd, const void * buffer, unsigned int count) | |
4003 | { | |
4004 | int nchars; | |
4005 | ||
7559f399 | 4006 | if (fd < 0) |
480b0c5b GV |
4007 | { |
4008 | errno = EBADF; | |
4009 | return -1; | |
4010 | } | |
4011 | ||
7559f399 | 4012 | if (fd < MAXDESC && fd_info[fd].flags & (FILE_PIPE | FILE_SOCKET)) |
76b3903d GV |
4013 | { |
4014 | if ((fd_info[fd].flags & FILE_WRITE) == 0) | |
4015 | { | |
4016 | errno = EBADF; | |
4017 | return -1; | |
4018 | } | |
4019 | ||
4020 | /* Perform text mode translation if required. */ | |
4021 | if ((fd_info[fd].flags & FILE_BINARY) == 0) | |
4022 | { | |
4023 | char * tmpbuf = alloca (count * 2); | |
4024 | unsigned char * src = (void *)buffer; | |
4025 | unsigned char * dst = tmpbuf; | |
4026 | int nbytes = count; | |
4027 | ||
4028 | while (1) | |
4029 | { | |
4030 | unsigned char *next; | |
4031 | /* copy next line or remaining bytes */ | |
4032 | next = _memccpy (dst, src, '\n', nbytes); | |
4033 | if (next) | |
4034 | { | |
4035 | /* copied one line ending with '\n' */ | |
4036 | int copied = next - dst; | |
4037 | nbytes -= copied; | |
4038 | src += copied; | |
4039 | /* insert '\r' before '\n' */ | |
4040 | next[-1] = '\r'; | |
4041 | next[0] = '\n'; | |
4042 | dst = next + 1; | |
4043 | count++; | |
177c0ea7 | 4044 | } |
76b3903d GV |
4045 | else |
4046 | /* copied remaining partial line -> now finished */ | |
4047 | break; | |
4048 | } | |
4049 | buffer = tmpbuf; | |
4050 | } | |
4051 | } | |
4052 | ||
480b0c5b | 4053 | #ifdef HAVE_SOCKETS |
7559f399 | 4054 | if (fd < MAXDESC && fd_info[fd].flags & FILE_SOCKET) |
480b0c5b | 4055 | { |
30a32e0e | 4056 | unsigned long nblock = 0; |
f249a012 | 4057 | if (winsock_lib == NULL) abort (); |
30a32e0e JR |
4058 | |
4059 | /* TODO: implement select() properly so non-blocking I/O works. */ | |
4060 | /* For now, make sure the write blocks. */ | |
4061 | if (fd_info[fd].flags & FILE_NDELAY) | |
4062 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONBIO, &nblock); | |
4063 | ||
480b0c5b | 4064 | nchars = pfn_send (SOCK_HANDLE (fd), buffer, count, 0); |
30a32e0e JR |
4065 | |
4066 | /* Set the socket back to non-blocking if it was before, | |
4067 | for other operations that support it. */ | |
4068 | if (fd_info[fd].flags & FILE_NDELAY) | |
4069 | { | |
4070 | nblock = 1; | |
4071 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONBIO, &nblock); | |
4072 | } | |
4073 | ||
480b0c5b GV |
4074 | if (nchars == SOCKET_ERROR) |
4075 | { | |
670773af | 4076 | DebPrint(("sys_write.send failed with error %d on socket %ld\n", |
480b0c5b GV |
4077 | pfn_WSAGetLastError (), SOCK_HANDLE (fd))); |
4078 | set_errno (); | |
4079 | } | |
4080 | } | |
4081 | else | |
4082 | #endif | |
4083 | nchars = _write (fd, buffer, count); | |
4084 | ||
4085 | return nchars; | |
4086 | } | |
4087 | ||
f52eb3ef GV |
4088 | static void |
4089 | check_windows_init_file () | |
4090 | { | |
4091 | extern int noninteractive, inhibit_window_system; | |
4092 | ||
4093 | /* A common indication that Emacs is not installed properly is when | |
4094 | it cannot find the Windows installation file. If this file does | |
4095 | not exist in the expected place, tell the user. */ | |
4096 | ||
177c0ea7 | 4097 | if (!noninteractive && !inhibit_window_system) |
d54abccd GV |
4098 | { |
4099 | extern Lisp_Object Vwindow_system, Vload_path, Qfile_exists_p; | |
a0b9c838 | 4100 | Lisp_Object objs[2]; |
96ef7d42 | 4101 | Lisp_Object full_load_path; |
d54abccd GV |
4102 | Lisp_Object init_file; |
4103 | int fd; | |
f52eb3ef | 4104 | |
a0b9c838 GV |
4105 | objs[0] = Vload_path; |
4106 | objs[1] = decode_env_path (0, (getenv ("EMACSLOADPATH"))); | |
4107 | full_load_path = Fappend (2, objs); | |
d54abccd | 4108 | init_file = build_string ("term/w32-win"); |
c50a2aa6 | 4109 | fd = openp (full_load_path, init_file, Fget_load_suffixes (), NULL, Qnil); |
177c0ea7 | 4110 | if (fd < 0) |
d54abccd | 4111 | { |
96ef7d42 | 4112 | Lisp_Object load_path_print = Fprin1_to_string (full_load_path, Qnil); |
d5db4077 KR |
4113 | char *init_file_name = SDATA (init_file); |
4114 | char *load_path = SDATA (load_path_print); | |
acc23b87 KS |
4115 | char *buffer = alloca (1024 |
4116 | + strlen (init_file_name) | |
4117 | + strlen (load_path)); | |
d54abccd | 4118 | |
177c0ea7 | 4119 | sprintf (buffer, |
d54abccd GV |
4120 | "The Emacs Windows initialization file \"%s.el\" " |
4121 | "could not be found in your Emacs installation. " | |
4122 | "Emacs checked the following directories for this file:\n" | |
4123 | "\n%s\n\n" | |
4124 | "When Emacs cannot find this file, it usually means that it " | |
4125 | "was not installed properly, or its distribution file was " | |
4126 | "not unpacked properly.\nSee the README.W32 file in the " | |
4127 | "top-level Emacs directory for more information.", | |
4128 | init_file_name, load_path); | |
4129 | MessageBox (NULL, | |
4130 | buffer, | |
4131 | "Emacs Abort Dialog", | |
4132 | MB_OK | MB_ICONEXCLAMATION | MB_TASKMODAL); | |
f52eb3ef GV |
4133 | /* Use the low-level Emacs abort. */ |
4134 | #undef abort | |
d54abccd GV |
4135 | abort (); |
4136 | } | |
4137 | else | |
4138 | { | |
a302c7ae | 4139 | _close (fd); |
d54abccd | 4140 | } |
f52eb3ef | 4141 | } |
f52eb3ef | 4142 | } |
480b0c5b GV |
4143 | |
4144 | void | |
4145 | term_ntproc () | |
4146 | { | |
4147 | #ifdef HAVE_SOCKETS | |
4148 | /* shutdown the socket interface if necessary */ | |
4149 | term_winsock (); | |
4150 | #endif | |
52c7f9ee JR |
4151 | |
4152 | term_w32select (); | |
480b0c5b GV |
4153 | } |
4154 | ||
4155 | void | |
4156 | init_ntproc () | |
4157 | { | |
4158 | #ifdef HAVE_SOCKETS | |
f249a012 RS |
4159 | /* Initialise the socket interface now if available and requested by |
4160 | the user by defining PRELOAD_WINSOCK; otherwise loading will be | |
fbd6baed | 4161 | delayed until open-network-stream is called (w32-has-winsock can |
f249a012 RS |
4162 | also be used to dynamically load or reload winsock). |
4163 | ||
4164 | Conveniently, init_environment is called before us, so | |
4165 | PRELOAD_WINSOCK can be set in the registry. */ | |
4166 | ||
4167 | /* Always initialize this correctly. */ | |
4168 | winsock_lib = NULL; | |
4169 | ||
4170 | if (getenv ("PRELOAD_WINSOCK") != NULL) | |
4171 | init_winsock (TRUE); | |
480b0c5b GV |
4172 | #endif |
4173 | ||
4174 | /* Initial preparation for subprocess support: replace our standard | |
4175 | handles with non-inheritable versions. */ | |
4176 | { | |
4177 | HANDLE parent; | |
4178 | HANDLE stdin_save = INVALID_HANDLE_VALUE; | |
4179 | HANDLE stdout_save = INVALID_HANDLE_VALUE; | |
4180 | HANDLE stderr_save = INVALID_HANDLE_VALUE; | |
4181 | ||
4182 | parent = GetCurrentProcess (); | |
4183 | ||
4184 | /* ignore errors when duplicating and closing; typically the | |
4185 | handles will be invalid when running as a gui program. */ | |
177c0ea7 JB |
4186 | DuplicateHandle (parent, |
4187 | GetStdHandle (STD_INPUT_HANDLE), | |
480b0c5b | 4188 | parent, |
177c0ea7 JB |
4189 | &stdin_save, |
4190 | 0, | |
4191 | FALSE, | |
480b0c5b | 4192 | DUPLICATE_SAME_ACCESS); |
177c0ea7 | 4193 | |
480b0c5b GV |
4194 | DuplicateHandle (parent, |
4195 | GetStdHandle (STD_OUTPUT_HANDLE), | |
4196 | parent, | |
4197 | &stdout_save, | |
4198 | 0, | |
4199 | FALSE, | |
4200 | DUPLICATE_SAME_ACCESS); | |
177c0ea7 | 4201 | |
480b0c5b GV |
4202 | DuplicateHandle (parent, |
4203 | GetStdHandle (STD_ERROR_HANDLE), | |
4204 | parent, | |
4205 | &stderr_save, | |
4206 | 0, | |
4207 | FALSE, | |
4208 | DUPLICATE_SAME_ACCESS); | |
177c0ea7 | 4209 | |
480b0c5b GV |
4210 | fclose (stdin); |
4211 | fclose (stdout); | |
4212 | fclose (stderr); | |
4213 | ||
4214 | if (stdin_save != INVALID_HANDLE_VALUE) | |
4215 | _open_osfhandle ((long) stdin_save, O_TEXT); | |
4216 | else | |
76b3903d GV |
4217 | _open ("nul", O_TEXT | O_NOINHERIT | O_RDONLY); |
4218 | _fdopen (0, "r"); | |
480b0c5b GV |
4219 | |
4220 | if (stdout_save != INVALID_HANDLE_VALUE) | |
4221 | _open_osfhandle ((long) stdout_save, O_TEXT); | |
4222 | else | |
76b3903d GV |
4223 | _open ("nul", O_TEXT | O_NOINHERIT | O_WRONLY); |
4224 | _fdopen (1, "w"); | |
480b0c5b GV |
4225 | |
4226 | if (stderr_save != INVALID_HANDLE_VALUE) | |
4227 | _open_osfhandle ((long) stderr_save, O_TEXT); | |
4228 | else | |
76b3903d GV |
4229 | _open ("nul", O_TEXT | O_NOINHERIT | O_WRONLY); |
4230 | _fdopen (2, "w"); | |
480b0c5b GV |
4231 | } |
4232 | ||
4233 | /* unfortunately, atexit depends on implementation of malloc */ | |
4234 | /* atexit (term_ntproc); */ | |
4235 | signal (SIGABRT, term_ntproc); | |
76b3903d GV |
4236 | |
4237 | /* determine which drives are fixed, for GetCachedVolumeInformation */ | |
4238 | { | |
4239 | /* GetDriveType must have trailing backslash. */ | |
4240 | char drive[] = "A:\\"; | |
4241 | ||
4242 | /* Loop over all possible drive letters */ | |
4243 | while (*drive <= 'Z') | |
4244 | { | |
4245 | /* Record if this drive letter refers to a fixed drive. */ | |
177c0ea7 | 4246 | fixed_drives[DRIVE_INDEX (*drive)] = |
76b3903d GV |
4247 | (GetDriveType (drive) == DRIVE_FIXED); |
4248 | ||
4249 | (*drive)++; | |
4250 | } | |
a302c7ae AI |
4251 | |
4252 | /* Reset the volume info cache. */ | |
4253 | volume_cache = NULL; | |
76b3903d | 4254 | } |
177c0ea7 | 4255 | |
d54abccd GV |
4256 | /* Check to see if Emacs has been installed correctly. */ |
4257 | check_windows_init_file (); | |
480b0c5b GV |
4258 | } |
4259 | ||
a8c3a596 JR |
4260 | /* |
4261 | shutdown_handler ensures that buffers' autosave files are | |
4262 | up to date when the user logs off, or the system shuts down. | |
4263 | */ | |
4264 | BOOL WINAPI shutdown_handler(DWORD type) | |
4265 | { | |
4266 | /* Ctrl-C and Ctrl-Break are already suppressed, so don't handle them. */ | |
4267 | if (type == CTRL_CLOSE_EVENT /* User closes console window. */ | |
4268 | || type == CTRL_LOGOFF_EVENT /* User logs off. */ | |
4269 | || type == CTRL_SHUTDOWN_EVENT) /* User shutsdown. */ | |
4270 | { | |
4271 | /* Shut down cleanly, making sure autosave files are up to date. */ | |
4272 | shut_down_emacs (0, 0, Qnil); | |
4273 | } | |
4274 | ||
7046f191 | 4275 | /* Allow other handlers to handle this signal. */ |
a8c3a596 JR |
4276 | return FALSE; |
4277 | } | |
4278 | ||
9785d95b BK |
4279 | /* |
4280 | globals_of_w32 is used to initialize those global variables that | |
4281 | must always be initialized on startup even when the global variable | |
4282 | initialized is non zero (see the function main in emacs.c). | |
4283 | */ | |
9bfb11f9 KS |
4284 | void |
4285 | globals_of_w32 () | |
9785d95b | 4286 | { |
74258518 JR |
4287 | HMODULE kernel32 = GetModuleHandle ("kernel32.dll"); |
4288 | ||
4289 | get_process_times_fn = (GetProcessTimes_Proc) | |
4290 | GetProcAddress (kernel32, "GetProcessTimes"); | |
4291 | ||
9785d95b BK |
4292 | g_b_init_is_windows_9x = 0; |
4293 | g_b_init_open_process_token = 0; | |
4294 | g_b_init_get_token_information = 0; | |
4295 | g_b_init_lookup_account_sid = 0; | |
4296 | g_b_init_get_sid_identifier_authority = 0; | |
a8c3a596 JR |
4297 | /* The following sets a handler for shutdown notifications for |
4298 | console apps. This actually applies to Emacs in both console and | |
4299 | GUI modes, since we had to fool windows into thinking emacs is a | |
4300 | console application to get console mode to work. */ | |
4301 | SetConsoleCtrlHandler(shutdown_handler, TRUE); | |
9785d95b BK |
4302 | } |
4303 | ||
aa5ee2a3 | 4304 | /* end of w32.c */ |
ab5796a9 MB |
4305 | |
4306 | /* arch-tag: 90442dd3-37be-482b-b272-ac752e3049f1 | |
4307 | (do not change this comment) */ |