Commit | Line | Data |
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e9e23e23 | 1 | /* Utility and Unix shadow routines for GNU Emacs on the Microsoft W32 API. |
0b5538bd TTN |
2 | Copyright (C) 1994, 1995, 2000, 2001, 2002, 2003, 2004, |
3 | 2005 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 | |
9 | the Free Software Foundation; either version 2, or (at your option) | |
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> |
480b0c5b GV |
35 | |
36 | /* must include CRT headers *before* config.h */ | |
4838e624 PJ |
37 | |
38 | #ifdef HAVE_CONFIG_H | |
39 | #include <config.h> | |
40 | #endif | |
41 | ||
480b0c5b GV |
42 | #undef access |
43 | #undef chdir | |
44 | #undef chmod | |
45 | #undef creat | |
46 | #undef ctime | |
47 | #undef fopen | |
48 | #undef link | |
49 | #undef mkdir | |
50 | #undef mktemp | |
51 | #undef open | |
52 | #undef rename | |
53 | #undef rmdir | |
54 | #undef unlink | |
55 | ||
56 | #undef close | |
57 | #undef dup | |
58 | #undef dup2 | |
59 | #undef pipe | |
60 | #undef read | |
61 | #undef write | |
95ed0025 | 62 | |
d8fcc1b9 AI |
63 | #undef strerror |
64 | ||
95ed0025 | 65 | #include "lisp.h" |
95ed0025 RS |
66 | |
67 | #include <pwd.h> | |
3d19b645 | 68 | #include <grp.h> |
95ed0025 | 69 | |
971bce75 AI |
70 | #ifdef __GNUC__ |
71 | #define _ANONYMOUS_UNION | |
72 | #define _ANONYMOUS_STRUCT | |
73 | #endif | |
480b0c5b | 74 | #include <windows.h> |
2d5324c5 | 75 | #include <shlobj.h> |
00b3b7b3 | 76 | |
480b0c5b GV |
77 | #ifdef HAVE_SOCKETS /* TCP connection support, if kernel can do it */ |
78 | #include <sys/socket.h> | |
79 | #undef socket | |
80 | #undef bind | |
81 | #undef connect | |
82 | #undef htons | |
83 | #undef ntohs | |
84 | #undef inet_addr | |
85 | #undef gethostname | |
86 | #undef gethostbyname | |
87 | #undef getservbyname | |
ecd270eb | 88 | #undef getpeername |
380961a6 | 89 | #undef shutdown |
962955c5 JR |
90 | #undef setsockopt |
91 | #undef listen | |
92 | #undef getsockname | |
93 | #undef accept | |
94 | #undef recvfrom | |
95 | #undef sendto | |
480b0c5b | 96 | #endif |
00b3b7b3 | 97 | |
489f9371 | 98 | #include "w32.h" |
480b0c5b | 99 | #include "ndir.h" |
489f9371 | 100 | #include "w32heap.h" |
253574a6 JR |
101 | #include "systime.h" |
102 | ||
2d5324c5 JR |
103 | typedef HRESULT (WINAPI * ShGetFolderPath_fn) |
104 | (IN HWND, IN int, IN HANDLE, IN DWORD, OUT char *); | |
105 | ||
9785d95b BK |
106 | void globals_of_w32 (); |
107 | ||
76b3903d GV |
108 | extern Lisp_Object Vw32_downcase_file_names; |
109 | extern Lisp_Object Vw32_generate_fake_inodes; | |
110 | extern Lisp_Object Vw32_get_true_file_attributes; | |
e0c181dd | 111 | extern int w32_num_mouse_buttons; |
76b3903d | 112 | |
18e070ac | 113 | \f |
9785d95b BK |
114 | /* |
115 | Initialization states | |
116 | */ | |
117 | static BOOL g_b_init_is_windows_9x; | |
118 | static BOOL g_b_init_open_process_token; | |
119 | static BOOL g_b_init_get_token_information; | |
120 | static BOOL g_b_init_lookup_account_sid; | |
121 | static BOOL g_b_init_get_sid_identifier_authority; | |
122 | ||
f60ae425 BK |
123 | /* |
124 | BEGIN: Wrapper functions around OpenProcessToken | |
125 | and other functions in advapi32.dll that are only | |
126 | supported in Windows NT / 2k / XP | |
127 | */ | |
128 | /* ** Function pointer typedefs ** */ | |
129 | typedef BOOL (WINAPI * OpenProcessToken_Proc) ( | |
130 | HANDLE ProcessHandle, | |
131 | DWORD DesiredAccess, | |
132 | PHANDLE TokenHandle); | |
133 | typedef BOOL (WINAPI * GetTokenInformation_Proc) ( | |
134 | HANDLE TokenHandle, | |
135 | TOKEN_INFORMATION_CLASS TokenInformationClass, | |
136 | LPVOID TokenInformation, | |
137 | DWORD TokenInformationLength, | |
138 | PDWORD ReturnLength); | |
139 | #ifdef _UNICODE | |
140 | const char * const LookupAccountSid_Name = "LookupAccountSidW"; | |
141 | #else | |
142 | const char * const LookupAccountSid_Name = "LookupAccountSidA"; | |
143 | #endif | |
144 | typedef BOOL (WINAPI * LookupAccountSid_Proc) ( | |
145 | LPCTSTR lpSystemName, | |
146 | PSID Sid, | |
147 | LPTSTR Name, | |
148 | LPDWORD cbName, | |
149 | LPTSTR DomainName, | |
150 | LPDWORD cbDomainName, | |
151 | PSID_NAME_USE peUse); | |
152 | typedef PSID_IDENTIFIER_AUTHORITY (WINAPI * GetSidIdentifierAuthority_Proc) ( | |
153 | PSID pSid); | |
154 | ||
155 | /* ** A utility function ** */ | |
156 | static BOOL is_windows_9x () | |
157 | { | |
9785d95b | 158 | static BOOL s_b_ret=0; |
f60ae425 | 159 | OSVERSIONINFO os_ver; |
9785d95b | 160 | if (g_b_init_is_windows_9x == 0) |
f60ae425 | 161 | { |
9785d95b BK |
162 | g_b_init_is_windows_9x = 1; |
163 | ZeroMemory(&os_ver, sizeof(OSVERSIONINFO)); | |
164 | os_ver.dwOSVersionInfoSize = sizeof(OSVERSIONINFO); | |
165 | if (GetVersionEx (&os_ver)) | |
166 | { | |
167 | s_b_ret = (os_ver.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS); | |
168 | } | |
f60ae425 | 169 | } |
9785d95b | 170 | return s_b_ret; |
f60ae425 BK |
171 | } |
172 | ||
173 | /* ** The wrapper functions ** */ | |
174 | ||
175 | BOOL WINAPI open_process_token ( | |
176 | HANDLE ProcessHandle, | |
177 | DWORD DesiredAccess, | |
178 | PHANDLE TokenHandle) | |
179 | { | |
9785d95b | 180 | static OpenProcessToken_Proc s_pfn_Open_Process_Token = NULL; |
f60ae425 BK |
181 | HMODULE hm_advapi32 = NULL; |
182 | if (is_windows_9x () == TRUE) | |
183 | { | |
184 | return FALSE; | |
185 | } | |
9785d95b BK |
186 | if (g_b_init_open_process_token == 0) |
187 | { | |
188 | g_b_init_open_process_token = 1; | |
189 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
190 | s_pfn_Open_Process_Token = | |
191 | (OpenProcessToken_Proc) GetProcAddress (hm_advapi32, "OpenProcessToken"); | |
192 | } | |
193 | if (s_pfn_Open_Process_Token == NULL) | |
f60ae425 BK |
194 | { |
195 | return FALSE; | |
196 | } | |
197 | return ( | |
9785d95b | 198 | s_pfn_Open_Process_Token ( |
f60ae425 BK |
199 | ProcessHandle, |
200 | DesiredAccess, | |
201 | TokenHandle) | |
202 | ); | |
203 | } | |
204 | ||
205 | BOOL WINAPI get_token_information ( | |
206 | HANDLE TokenHandle, | |
207 | TOKEN_INFORMATION_CLASS TokenInformationClass, | |
208 | LPVOID TokenInformation, | |
209 | DWORD TokenInformationLength, | |
210 | PDWORD ReturnLength) | |
211 | { | |
9785d95b | 212 | static GetTokenInformation_Proc s_pfn_Get_Token_Information = NULL; |
f60ae425 BK |
213 | HMODULE hm_advapi32 = NULL; |
214 | if (is_windows_9x () == TRUE) | |
215 | { | |
216 | return FALSE; | |
217 | } | |
9785d95b BK |
218 | if (g_b_init_get_token_information == 0) |
219 | { | |
220 | g_b_init_get_token_information = 1; | |
221 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
222 | s_pfn_Get_Token_Information = | |
223 | (GetTokenInformation_Proc) GetProcAddress (hm_advapi32, "GetTokenInformation"); | |
224 | } | |
225 | if (s_pfn_Get_Token_Information == NULL) | |
f60ae425 BK |
226 | { |
227 | return FALSE; | |
228 | } | |
229 | return ( | |
9785d95b | 230 | s_pfn_Get_Token_Information ( |
f60ae425 BK |
231 | TokenHandle, |
232 | TokenInformationClass, | |
233 | TokenInformation, | |
234 | TokenInformationLength, | |
235 | ReturnLength) | |
236 | ); | |
237 | } | |
238 | ||
239 | BOOL WINAPI lookup_account_sid ( | |
240 | LPCTSTR lpSystemName, | |
241 | PSID Sid, | |
242 | LPTSTR Name, | |
243 | LPDWORD cbName, | |
244 | LPTSTR DomainName, | |
245 | LPDWORD cbDomainName, | |
246 | PSID_NAME_USE peUse) | |
247 | { | |
9785d95b | 248 | static LookupAccountSid_Proc s_pfn_Lookup_Account_Sid = NULL; |
f60ae425 BK |
249 | HMODULE hm_advapi32 = NULL; |
250 | if (is_windows_9x () == TRUE) | |
251 | { | |
252 | return FALSE; | |
253 | } | |
9785d95b BK |
254 | if (g_b_init_lookup_account_sid == 0) |
255 | { | |
256 | g_b_init_lookup_account_sid = 1; | |
257 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
258 | s_pfn_Lookup_Account_Sid = | |
259 | (LookupAccountSid_Proc) GetProcAddress (hm_advapi32, LookupAccountSid_Name); | |
260 | } | |
261 | if (s_pfn_Lookup_Account_Sid == NULL) | |
f60ae425 BK |
262 | { |
263 | return FALSE; | |
264 | } | |
265 | return ( | |
9785d95b | 266 | s_pfn_Lookup_Account_Sid ( |
f60ae425 BK |
267 | lpSystemName, |
268 | Sid, | |
269 | Name, | |
270 | cbName, | |
271 | DomainName, | |
272 | cbDomainName, | |
273 | peUse) | |
274 | ); | |
275 | } | |
276 | ||
277 | PSID_IDENTIFIER_AUTHORITY WINAPI get_sid_identifier_authority ( | |
278 | PSID pSid) | |
279 | { | |
9785d95b | 280 | static GetSidIdentifierAuthority_Proc s_pfn_Get_Sid_Identifier_Authority = NULL; |
f60ae425 BK |
281 | HMODULE hm_advapi32 = NULL; |
282 | if (is_windows_9x () == TRUE) | |
283 | { | |
284 | return NULL; | |
285 | } | |
9785d95b BK |
286 | if (g_b_init_get_sid_identifier_authority == 0) |
287 | { | |
288 | g_b_init_get_sid_identifier_authority = 1; | |
289 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
290 | s_pfn_Get_Sid_Identifier_Authority = | |
291 | (GetSidIdentifierAuthority_Proc) GetProcAddress ( | |
292 | hm_advapi32, "GetSidIdentifierAuthority"); | |
293 | } | |
294 | if (s_pfn_Get_Sid_Identifier_Authority == NULL) | |
f60ae425 BK |
295 | { |
296 | return NULL; | |
297 | } | |
9785d95b | 298 | return (s_pfn_Get_Sid_Identifier_Authority (pSid)); |
f60ae425 BK |
299 | } |
300 | ||
301 | /* | |
302 | END: Wrapper functions around OpenProcessToken | |
303 | and other functions in advapi32.dll that are only | |
304 | supported in Windows NT / 2k / XP | |
305 | */ | |
306 | ||
307 | \f | |
18e070ac AI |
308 | /* Equivalent of strerror for W32 error codes. */ |
309 | char * | |
310 | w32_strerror (int error_no) | |
311 | { | |
312 | static char buf[500]; | |
313 | ||
314 | if (error_no == 0) | |
315 | error_no = GetLastError (); | |
316 | ||
317 | buf[0] = '\0'; | |
318 | if (!FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM, NULL, | |
319 | error_no, | |
320 | 0, /* choose most suitable language */ | |
321 | buf, sizeof (buf), NULL)) | |
322 | sprintf (buf, "w32 error %u", error_no); | |
323 | return buf; | |
324 | } | |
325 | ||
76b3903d | 326 | static char startup_dir[MAXPATHLEN]; |
00b3b7b3 | 327 | |
95ed0025 | 328 | /* Get the current working directory. */ |
480b0c5b | 329 | char * |
95ed0025 RS |
330 | getwd (char *dir) |
331 | { | |
76b3903d | 332 | #if 0 |
480b0c5b GV |
333 | if (GetCurrentDirectory (MAXPATHLEN, dir) > 0) |
334 | return dir; | |
335 | return NULL; | |
76b3903d GV |
336 | #else |
337 | /* Emacs doesn't actually change directory itself, and we want to | |
338 | force our real wd to be where emacs.exe is to avoid unnecessary | |
339 | conflicts when trying to rename or delete directories. */ | |
340 | strcpy (dir, startup_dir); | |
341 | return dir; | |
342 | #endif | |
95ed0025 RS |
343 | } |
344 | ||
480b0c5b | 345 | #ifndef HAVE_SOCKETS |
95ed0025 RS |
346 | /* Emulate gethostname. */ |
347 | int | |
348 | gethostname (char *buffer, int size) | |
349 | { | |
177c0ea7 | 350 | /* NT only allows small host names, so the buffer is |
95ed0025 RS |
351 | certainly large enough. */ |
352 | return !GetComputerName (buffer, &size); | |
353 | } | |
480b0c5b | 354 | #endif /* HAVE_SOCKETS */ |
95ed0025 RS |
355 | |
356 | /* Emulate getloadavg. */ | |
357 | int | |
358 | getloadavg (double loadavg[], int nelem) | |
359 | { | |
360 | int i; | |
361 | ||
362 | /* A faithful emulation is going to have to be saved for a rainy day. */ | |
177c0ea7 | 363 | for (i = 0; i < nelem; i++) |
95ed0025 RS |
364 | { |
365 | loadavg[i] = 0.0; | |
366 | } | |
367 | return i; | |
368 | } | |
369 | ||
480b0c5b | 370 | /* Emulate getpwuid, getpwnam and others. */ |
95ed0025 | 371 | |
051fe60d GV |
372 | #define PASSWD_FIELD_SIZE 256 |
373 | ||
374 | static char the_passwd_name[PASSWD_FIELD_SIZE]; | |
375 | static char the_passwd_passwd[PASSWD_FIELD_SIZE]; | |
376 | static char the_passwd_gecos[PASSWD_FIELD_SIZE]; | |
377 | static char the_passwd_dir[PASSWD_FIELD_SIZE]; | |
378 | static char the_passwd_shell[PASSWD_FIELD_SIZE]; | |
95ed0025 | 379 | |
177c0ea7 | 380 | static struct passwd the_passwd = |
95ed0025 RS |
381 | { |
382 | the_passwd_name, | |
383 | the_passwd_passwd, | |
384 | 0, | |
385 | 0, | |
386 | 0, | |
387 | the_passwd_gecos, | |
388 | the_passwd_dir, | |
389 | the_passwd_shell, | |
390 | }; | |
391 | ||
3d19b645 LH |
392 | static struct group the_group = |
393 | { | |
394 | /* There are no groups on NT, so we just return "root" as the | |
395 | group name. */ | |
396 | "root", | |
397 | }; | |
398 | ||
177c0ea7 JB |
399 | int |
400 | getuid () | |
401 | { | |
480b0c5b GV |
402 | return the_passwd.pw_uid; |
403 | } | |
404 | ||
177c0ea7 JB |
405 | int |
406 | geteuid () | |
407 | { | |
480b0c5b GV |
408 | /* I could imagine arguing for checking to see whether the user is |
409 | in the Administrators group and returning a UID of 0 for that | |
410 | case, but I don't know how wise that would be in the long run. */ | |
177c0ea7 | 411 | return getuid (); |
480b0c5b GV |
412 | } |
413 | ||
177c0ea7 JB |
414 | int |
415 | getgid () | |
416 | { | |
480b0c5b GV |
417 | return the_passwd.pw_gid; |
418 | } | |
419 | ||
177c0ea7 JB |
420 | int |
421 | getegid () | |
422 | { | |
480b0c5b GV |
423 | return getgid (); |
424 | } | |
425 | ||
95ed0025 RS |
426 | struct passwd * |
427 | getpwuid (int uid) | |
428 | { | |
480b0c5b GV |
429 | if (uid == the_passwd.pw_uid) |
430 | return &the_passwd; | |
431 | return NULL; | |
95ed0025 RS |
432 | } |
433 | ||
3d19b645 LH |
434 | struct group * |
435 | getgrgid (gid_t gid) | |
436 | { | |
437 | return &the_group; | |
438 | } | |
439 | ||
95ed0025 RS |
440 | struct passwd * |
441 | getpwnam (char *name) | |
442 | { | |
443 | struct passwd *pw; | |
177c0ea7 | 444 | |
95ed0025 RS |
445 | pw = getpwuid (getuid ()); |
446 | if (!pw) | |
447 | return pw; | |
448 | ||
480b0c5b | 449 | if (stricmp (name, pw->pw_name)) |
95ed0025 RS |
450 | return NULL; |
451 | ||
452 | return pw; | |
453 | } | |
454 | ||
480b0c5b GV |
455 | void |
456 | init_user_info () | |
95ed0025 | 457 | { |
480b0c5b GV |
458 | /* Find the user's real name by opening the process token and |
459 | looking up the name associated with the user-sid in that token. | |
460 | ||
461 | Use the relative portion of the identifier authority value from | |
462 | the user-sid as the user id value (same for group id using the | |
463 | primary group sid from the process token). */ | |
464 | ||
465 | char user_sid[256], name[256], domain[256]; | |
466 | DWORD length = sizeof (name), dlength = sizeof (domain), trash; | |
467 | HANDLE token = NULL; | |
468 | SID_NAME_USE user_type; | |
469 | ||
f60ae425 BK |
470 | if ( |
471 | open_process_token (GetCurrentProcess (), TOKEN_QUERY, &token) | |
472 | && get_token_information ( | |
473 | token, TokenUser, | |
480b0c5b | 474 | (PVOID) user_sid, sizeof (user_sid), &trash) |
f60ae425 BK |
475 | && lookup_account_sid ( |
476 | NULL, *((PSID *) user_sid), name, &length, | |
477 | domain, &dlength, &user_type) | |
478 | ) | |
d1c1c3d2 | 479 | { |
480b0c5b GV |
480 | strcpy (the_passwd.pw_name, name); |
481 | /* Determine a reasonable uid value. */ | |
482 | if (stricmp ("administrator", name) == 0) | |
483 | { | |
484 | the_passwd.pw_uid = 0; | |
485 | the_passwd.pw_gid = 0; | |
486 | } | |
487 | else | |
488 | { | |
489 | SID_IDENTIFIER_AUTHORITY * pSIA; | |
490 | ||
f60ae425 | 491 | pSIA = get_sid_identifier_authority (*((PSID *) user_sid)); |
480b0c5b GV |
492 | /* I believe the relative portion is the last 4 bytes (of 6) |
493 | with msb first. */ | |
494 | the_passwd.pw_uid = ((pSIA->Value[2] << 24) + | |
495 | (pSIA->Value[3] << 16) + | |
496 | (pSIA->Value[4] << 8) + | |
497 | (pSIA->Value[5] << 0)); | |
498 | /* restrict to conventional uid range for normal users */ | |
499 | the_passwd.pw_uid = the_passwd.pw_uid % 60001; | |
500 | ||
501 | /* Get group id */ | |
f60ae425 | 502 | if (get_token_information (token, TokenPrimaryGroup, |
480b0c5b GV |
503 | (PVOID) user_sid, sizeof (user_sid), &trash)) |
504 | { | |
505 | SID_IDENTIFIER_AUTHORITY * pSIA; | |
506 | ||
f60ae425 | 507 | pSIA = get_sid_identifier_authority (*((PSID *) user_sid)); |
480b0c5b GV |
508 | the_passwd.pw_gid = ((pSIA->Value[2] << 24) + |
509 | (pSIA->Value[3] << 16) + | |
510 | (pSIA->Value[4] << 8) + | |
511 | (pSIA->Value[5] << 0)); | |
512 | /* I don't know if this is necessary, but for safety... */ | |
513 | the_passwd.pw_gid = the_passwd.pw_gid % 60001; | |
514 | } | |
515 | else | |
516 | the_passwd.pw_gid = the_passwd.pw_uid; | |
517 | } | |
518 | } | |
519 | /* If security calls are not supported (presumably because we | |
520 | are running under Windows 95), fallback to this. */ | |
521 | else if (GetUserName (name, &length)) | |
522 | { | |
523 | strcpy (the_passwd.pw_name, name); | |
524 | if (stricmp ("administrator", name) == 0) | |
525 | the_passwd.pw_uid = 0; | |
526 | else | |
527 | the_passwd.pw_uid = 123; | |
528 | the_passwd.pw_gid = the_passwd.pw_uid; | |
529 | } | |
530 | else | |
531 | { | |
532 | strcpy (the_passwd.pw_name, "unknown"); | |
533 | the_passwd.pw_uid = 123; | |
534 | the_passwd.pw_gid = 123; | |
d1c1c3d2 | 535 | } |
95ed0025 | 536 | |
480b0c5b GV |
537 | /* Ensure HOME and SHELL are defined. */ |
538 | if (getenv ("HOME") == NULL) | |
ca149beb | 539 | abort (); |
480b0c5b | 540 | if (getenv ("SHELL") == NULL) |
ca149beb | 541 | abort (); |
95ed0025 | 542 | |
480b0c5b GV |
543 | /* Set dir and shell from environment variables. */ |
544 | strcpy (the_passwd.pw_dir, getenv ("HOME")); | |
545 | strcpy (the_passwd.pw_shell, getenv ("SHELL")); | |
bd4a449f | 546 | |
480b0c5b GV |
547 | if (token) |
548 | CloseHandle (token); | |
95ed0025 RS |
549 | } |
550 | ||
95ed0025 | 551 | int |
480b0c5b | 552 | random () |
95ed0025 | 553 | { |
480b0c5b GV |
554 | /* rand () on NT gives us 15 random bits...hack together 30 bits. */ |
555 | return ((rand () << 15) | rand ()); | |
95ed0025 RS |
556 | } |
557 | ||
95ed0025 | 558 | void |
480b0c5b | 559 | srandom (int seed) |
95ed0025 | 560 | { |
480b0c5b | 561 | srand (seed); |
95ed0025 RS |
562 | } |
563 | ||
76b3903d | 564 | |
cbe39279 RS |
565 | /* Normalize filename by converting all path separators to |
566 | the specified separator. Also conditionally convert upper | |
567 | case path name components to lower case. */ | |
568 | ||
569 | static void | |
570 | normalize_filename (fp, path_sep) | |
571 | register char *fp; | |
572 | char path_sep; | |
573 | { | |
574 | char sep; | |
575 | char *elem; | |
576 | ||
5162ffce MB |
577 | /* Always lower-case drive letters a-z, even if the filesystem |
578 | preserves case in filenames. | |
579 | This is so filenames can be compared by string comparison | |
580 | functions that are case-sensitive. Even case-preserving filesystems | |
581 | do not distinguish case in drive letters. */ | |
582 | if (fp[1] == ':' && *fp >= 'A' && *fp <= 'Z') | |
583 | { | |
584 | *fp += 'a' - 'A'; | |
585 | fp += 2; | |
586 | } | |
587 | ||
fbd6baed | 588 | if (NILP (Vw32_downcase_file_names)) |
cbe39279 RS |
589 | { |
590 | while (*fp) | |
591 | { | |
592 | if (*fp == '/' || *fp == '\\') | |
593 | *fp = path_sep; | |
594 | fp++; | |
595 | } | |
596 | return; | |
597 | } | |
598 | ||
599 | sep = path_sep; /* convert to this path separator */ | |
600 | elem = fp; /* start of current path element */ | |
601 | ||
602 | do { | |
603 | if (*fp >= 'a' && *fp <= 'z') | |
604 | elem = 0; /* don't convert this element */ | |
605 | ||
606 | if (*fp == 0 || *fp == ':') | |
607 | { | |
608 | sep = *fp; /* restore current separator (or 0) */ | |
609 | *fp = '/'; /* after conversion of this element */ | |
610 | } | |
611 | ||
612 | if (*fp == '/' || *fp == '\\') | |
613 | { | |
614 | if (elem && elem != fp) | |
615 | { | |
616 | *fp = 0; /* temporary end of string */ | |
617 | _strlwr (elem); /* while we convert to lower case */ | |
618 | } | |
619 | *fp = sep; /* convert (or restore) path separator */ | |
620 | elem = fp + 1; /* next element starts after separator */ | |
621 | sep = path_sep; | |
622 | } | |
623 | } while (*fp++); | |
624 | } | |
625 | ||
480b0c5b | 626 | /* Destructively turn backslashes into slashes. */ |
95ed0025 | 627 | void |
480b0c5b GV |
628 | dostounix_filename (p) |
629 | register char *p; | |
95ed0025 | 630 | { |
cbe39279 | 631 | normalize_filename (p, '/'); |
95ed0025 RS |
632 | } |
633 | ||
480b0c5b | 634 | /* Destructively turn slashes into backslashes. */ |
95ed0025 | 635 | void |
480b0c5b GV |
636 | unixtodos_filename (p) |
637 | register char *p; | |
95ed0025 | 638 | { |
cbe39279 | 639 | normalize_filename (p, '\\'); |
95ed0025 RS |
640 | } |
641 | ||
480b0c5b GV |
642 | /* Remove all CR's that are followed by a LF. |
643 | (From msdos.c...probably should figure out a way to share it, | |
644 | although this code isn't going to ever change.) */ | |
35f0d482 | 645 | int |
480b0c5b GV |
646 | crlf_to_lf (n, buf) |
647 | register int n; | |
648 | register unsigned char *buf; | |
35f0d482 | 649 | { |
480b0c5b GV |
650 | unsigned char *np = buf; |
651 | unsigned char *startp = buf; | |
652 | unsigned char *endp = buf + n; | |
35f0d482 | 653 | |
480b0c5b GV |
654 | if (n == 0) |
655 | return n; | |
656 | while (buf < endp - 1) | |
95ed0025 | 657 | { |
480b0c5b GV |
658 | if (*buf == 0x0d) |
659 | { | |
660 | if (*(++buf) != 0x0a) | |
661 | *np++ = 0x0d; | |
662 | } | |
663 | else | |
664 | *np++ = *buf++; | |
95ed0025 | 665 | } |
480b0c5b GV |
666 | if (buf < endp) |
667 | *np++ = *buf++; | |
668 | return np - startp; | |
95ed0025 RS |
669 | } |
670 | ||
76b3903d GV |
671 | /* Parse the root part of file name, if present. Return length and |
672 | optionally store pointer to char after root. */ | |
673 | static int | |
674 | parse_root (char * name, char ** pPath) | |
675 | { | |
676 | char * start = name; | |
677 | ||
678 | if (name == NULL) | |
679 | return 0; | |
680 | ||
681 | /* find the root name of the volume if given */ | |
682 | if (isalpha (name[0]) && name[1] == ':') | |
683 | { | |
684 | /* skip past drive specifier */ | |
685 | name += 2; | |
686 | if (IS_DIRECTORY_SEP (name[0])) | |
687 | name++; | |
688 | } | |
689 | else if (IS_DIRECTORY_SEP (name[0]) && IS_DIRECTORY_SEP (name[1])) | |
690 | { | |
691 | int slashes = 2; | |
692 | name += 2; | |
693 | do | |
694 | { | |
695 | if (IS_DIRECTORY_SEP (*name) && --slashes == 0) | |
696 | break; | |
697 | name++; | |
698 | } | |
699 | while ( *name ); | |
700 | if (IS_DIRECTORY_SEP (name[0])) | |
701 | name++; | |
702 | } | |
703 | ||
704 | if (pPath) | |
705 | *pPath = name; | |
706 | ||
707 | return name - start; | |
708 | } | |
709 | ||
710 | /* Get long base name for name; name is assumed to be absolute. */ | |
711 | static int | |
712 | get_long_basename (char * name, char * buf, int size) | |
713 | { | |
714 | WIN32_FIND_DATA find_data; | |
715 | HANDLE dir_handle; | |
716 | int len = 0; | |
717 | ||
9ab8560d | 718 | /* must be valid filename, no wild cards or other invalid characters */ |
bb1584c8 RS |
719 | if (strpbrk (name, "*?|<>\"")) |
720 | return 0; | |
721 | ||
76b3903d GV |
722 | dir_handle = FindFirstFile (name, &find_data); |
723 | if (dir_handle != INVALID_HANDLE_VALUE) | |
724 | { | |
725 | if ((len = strlen (find_data.cFileName)) < size) | |
726 | memcpy (buf, find_data.cFileName, len + 1); | |
727 | else | |
728 | len = 0; | |
729 | FindClose (dir_handle); | |
730 | } | |
731 | return len; | |
732 | } | |
733 | ||
734 | /* Get long name for file, if possible (assumed to be absolute). */ | |
735 | BOOL | |
736 | w32_get_long_filename (char * name, char * buf, int size) | |
737 | { | |
738 | char * o = buf; | |
739 | char * p; | |
740 | char * q; | |
741 | char full[ MAX_PATH ]; | |
742 | int len; | |
743 | ||
744 | len = strlen (name); | |
745 | if (len >= MAX_PATH) | |
746 | return FALSE; | |
747 | ||
748 | /* Use local copy for destructive modification. */ | |
749 | memcpy (full, name, len+1); | |
750 | unixtodos_filename (full); | |
751 | ||
752 | /* Copy root part verbatim. */ | |
753 | len = parse_root (full, &p); | |
754 | memcpy (o, full, len); | |
755 | o += len; | |
4f8ac0b2 | 756 | *o = '\0'; |
76b3903d GV |
757 | size -= len; |
758 | ||
4f8ac0b2 | 759 | while (p != NULL && *p) |
76b3903d GV |
760 | { |
761 | q = p; | |
762 | p = strchr (q, '\\'); | |
763 | if (p) *p = '\0'; | |
764 | len = get_long_basename (full, o, size); | |
765 | if (len > 0) | |
766 | { | |
767 | o += len; | |
768 | size -= len; | |
769 | if (p != NULL) | |
770 | { | |
771 | *p++ = '\\'; | |
772 | if (size < 2) | |
773 | return FALSE; | |
774 | *o++ = '\\'; | |
775 | size--; | |
776 | *o = '\0'; | |
777 | } | |
778 | } | |
779 | else | |
780 | return FALSE; | |
781 | } | |
76b3903d GV |
782 | |
783 | return TRUE; | |
784 | } | |
785 | ||
9d3355d1 GV |
786 | int |
787 | is_unc_volume (const char *filename) | |
788 | { | |
789 | const char *ptr = filename; | |
790 | ||
791 | if (!IS_DIRECTORY_SEP (ptr[0]) || !IS_DIRECTORY_SEP (ptr[1]) || !ptr[2]) | |
792 | return 0; | |
793 | ||
794 | if (strpbrk (ptr + 2, "*?|<>\"\\/")) | |
795 | return 0; | |
796 | ||
797 | return 1; | |
798 | } | |
76b3903d | 799 | |
95ed0025 RS |
800 | /* Routines that are no-ops on NT but are defined to get Emacs to compile. */ |
801 | ||
177c0ea7 JB |
802 | int |
803 | sigsetmask (int signal_mask) | |
804 | { | |
95ed0025 RS |
805 | return 0; |
806 | } | |
807 | ||
177c0ea7 JB |
808 | int |
809 | sigmask (int sig) | |
810 | { | |
8f900f6e AI |
811 | return 0; |
812 | } | |
813 | ||
177c0ea7 JB |
814 | int |
815 | sigblock (int sig) | |
816 | { | |
95ed0025 RS |
817 | return 0; |
818 | } | |
819 | ||
177c0ea7 JB |
820 | int |
821 | sigunblock (int sig) | |
822 | { | |
8f900f6e AI |
823 | return 0; |
824 | } | |
825 | ||
177c0ea7 JB |
826 | int |
827 | setpgrp (int pid, int gid) | |
828 | { | |
95ed0025 RS |
829 | return 0; |
830 | } | |
831 | ||
177c0ea7 JB |
832 | int |
833 | alarm (int seconds) | |
834 | { | |
95ed0025 RS |
835 | return 0; |
836 | } | |
837 | ||
177c0ea7 JB |
838 | void |
839 | unrequest_sigio (void) | |
840 | { | |
c6624584 | 841 | return; |
95ed0025 RS |
842 | } |
843 | ||
c6624584 | 844 | void |
177c0ea7 JB |
845 | request_sigio (void) |
846 | { | |
c6624584 | 847 | return; |
95ed0025 RS |
848 | } |
849 | ||
480b0c5b | 850 | #define REG_ROOT "SOFTWARE\\GNU\\Emacs" |
f332b293 | 851 | |
177c0ea7 | 852 | LPBYTE |
fbd6baed | 853 | w32_get_resource (key, lpdwtype) |
f332b293 GV |
854 | char *key; |
855 | LPDWORD lpdwtype; | |
856 | { | |
857 | LPBYTE lpvalue; | |
858 | HKEY hrootkey = NULL; | |
859 | DWORD cbData; | |
860 | BOOL ok = FALSE; | |
177c0ea7 JB |
861 | |
862 | /* Check both the current user and the local machine to see if | |
f332b293 | 863 | we have any resources. */ |
177c0ea7 | 864 | |
f332b293 GV |
865 | if (RegOpenKeyEx (HKEY_CURRENT_USER, REG_ROOT, 0, KEY_READ, &hrootkey) == ERROR_SUCCESS) |
866 | { | |
867 | lpvalue = NULL; | |
868 | ||
177c0ea7 JB |
869 | if (RegQueryValueEx (hrootkey, key, NULL, NULL, NULL, &cbData) == ERROR_SUCCESS |
870 | && (lpvalue = (LPBYTE) xmalloc (cbData)) != NULL | |
f332b293 GV |
871 | && RegQueryValueEx (hrootkey, key, NULL, lpdwtype, lpvalue, &cbData) == ERROR_SUCCESS) |
872 | { | |
873 | return (lpvalue); | |
874 | } | |
875 | ||
876 | if (lpvalue) xfree (lpvalue); | |
177c0ea7 | 877 | |
f332b293 | 878 | RegCloseKey (hrootkey); |
177c0ea7 JB |
879 | } |
880 | ||
f332b293 GV |
881 | if (RegOpenKeyEx (HKEY_LOCAL_MACHINE, REG_ROOT, 0, KEY_READ, &hrootkey) == ERROR_SUCCESS) |
882 | { | |
883 | lpvalue = NULL; | |
177c0ea7 | 884 | |
76b3903d GV |
885 | if (RegQueryValueEx (hrootkey, key, NULL, NULL, NULL, &cbData) == ERROR_SUCCESS |
886 | && (lpvalue = (LPBYTE) xmalloc (cbData)) != NULL | |
887 | && RegQueryValueEx (hrootkey, key, NULL, lpdwtype, lpvalue, &cbData) == ERROR_SUCCESS) | |
f332b293 GV |
888 | { |
889 | return (lpvalue); | |
890 | } | |
177c0ea7 | 891 | |
f332b293 | 892 | if (lpvalue) xfree (lpvalue); |
177c0ea7 | 893 | |
f332b293 | 894 | RegCloseKey (hrootkey); |
177c0ea7 JB |
895 | } |
896 | ||
f332b293 GV |
897 | return (NULL); |
898 | } | |
899 | ||
75b08edb GV |
900 | char *get_emacs_configuration (void); |
901 | extern Lisp_Object Vsystem_configuration; | |
902 | ||
f332b293 | 903 | void |
aa7b87b0 | 904 | init_environment (char ** argv) |
f332b293 | 905 | { |
b3308d2e KH |
906 | static const char * const tempdirs[] = { |
907 | "$TMPDIR", "$TEMP", "$TMP", "c:/" | |
908 | }; | |
2d5324c5 | 909 | |
b3308d2e | 910 | int i; |
2d5324c5 | 911 | |
b3308d2e KH |
912 | const int imax = sizeof (tempdirs) / sizeof (tempdirs[0]); |
913 | ||
914 | /* Make sure they have a usable $TMPDIR. Many Emacs functions use | |
915 | temporary files and assume "/tmp" if $TMPDIR is unset, which | |
916 | will break on DOS/Windows. Refuse to work if we cannot find | |
917 | a directory, not even "c:/", usable for that purpose. */ | |
918 | for (i = 0; i < imax ; i++) | |
919 | { | |
920 | const char *tmp = tempdirs[i]; | |
921 | ||
922 | if (*tmp == '$') | |
923 | tmp = getenv (tmp + 1); | |
924 | /* Note that `access' can lie to us if the directory resides on a | |
925 | read-only filesystem, like CD-ROM or a write-protected floppy. | |
926 | The only way to be really sure is to actually create a file and | |
927 | see if it succeeds. But I think that's too much to ask. */ | |
a302c7ae | 928 | if (tmp && _access (tmp, D_OK) == 0) |
b3308d2e KH |
929 | { |
930 | char * var = alloca (strlen (tmp) + 8); | |
931 | sprintf (var, "TMPDIR=%s", tmp); | |
aca583b2 | 932 | _putenv (strdup (var)); |
b3308d2e KH |
933 | break; |
934 | } | |
935 | } | |
936 | if (i >= imax) | |
937 | cmd_error_internal | |
938 | (Fcons (Qerror, | |
939 | Fcons (build_string ("no usable temporary directories found!!"), | |
940 | Qnil)), | |
941 | "While setting TMPDIR: "); | |
942 | ||
ca149beb AI |
943 | /* Check for environment variables and use registry settings if they |
944 | don't exist. Fallback on default values where applicable. */ | |
f332b293 | 945 | { |
480b0c5b GV |
946 | int i; |
947 | LPBYTE lpval; | |
948 | DWORD dwType; | |
69fb0241 | 949 | char locale_name[32]; |
2d5324c5 JR |
950 | struct stat ignored; |
951 | char default_home[MAX_PATH]; | |
f332b293 | 952 | |
ca149beb AI |
953 | static struct env_entry |
954 | { | |
955 | char * name; | |
956 | char * def_value; | |
177c0ea7 | 957 | } env_vars[] = |
ca149beb AI |
958 | { |
959 | {"HOME", "C:/"}, | |
960 | {"PRELOAD_WINSOCK", NULL}, | |
961 | {"emacs_dir", "C:/emacs"}, | |
cc14250a | 962 | {"EMACSLOADPATH", "%emacs_dir%/site-lisp;%emacs_dir%/../site-lisp;%emacs_dir%/lisp;%emacs_dir%/leim"}, |
ca149beb AI |
963 | {"SHELL", "%emacs_dir%/bin/cmdproxy.exe"}, |
964 | {"EMACSDATA", "%emacs_dir%/etc"}, | |
965 | {"EMACSPATH", "%emacs_dir%/bin"}, | |
76b3903d | 966 | /* We no longer set INFOPATH because Info-default-directory-list |
ca149beb AI |
967 | is then ignored. */ |
968 | /* {"INFOPATH", "%emacs_dir%/info"}, */ | |
969 | {"EMACSDOC", "%emacs_dir%/etc"}, | |
69fb0241 JR |
970 | {"TERM", "cmd"}, |
971 | {"LANG", NULL}, | |
480b0c5b GV |
972 | }; |
973 | ||
2d5324c5 JR |
974 | /* For backwards compatibility, check if a .emacs file exists in C:/ |
975 | If not, then we can try to default to the appdata directory under the | |
976 | user's profile, which is more likely to be writable. */ | |
977 | if (stat ("C:/.emacs", &ignored) < 0) | |
978 | { | |
979 | HRESULT profile_result; | |
980 | /* Dynamically load ShGetFolderPath, as it won't exist on versions | |
981 | of Windows 95 and NT4 that have not been updated to include | |
982 | MSIE 5. Also we don't link with shell32.dll by default. */ | |
983 | HMODULE shell32_dll; | |
984 | ShGetFolderPath_fn get_folder_path; | |
985 | shell32_dll = GetModuleHandle ("shell32.dll"); | |
986 | get_folder_path = (ShGetFolderPath_fn) | |
987 | GetProcAddress (shell32_dll, "SHGetFolderPathA"); | |
988 | ||
989 | if (get_folder_path != NULL) | |
990 | { | |
991 | profile_result = get_folder_path (NULL, CSIDL_APPDATA, NULL, | |
992 | 0, default_home); | |
993 | ||
994 | /* If we can't get the appdata dir, revert to old behaviour. */ | |
995 | if (profile_result == S_OK) | |
996 | env_vars[0].def_value = default_home; | |
997 | } | |
998 | ||
999 | /* Unload shell32.dll, it is not needed anymore. */ | |
1000 | FreeLibrary (shell32_dll); | |
1001 | } | |
1002 | ||
69fb0241 JR |
1003 | /* Get default locale info and use it for LANG. */ |
1004 | if (GetLocaleInfo (LOCALE_USER_DEFAULT, | |
1005 | LOCALE_SABBREVLANGNAME | LOCALE_USE_CP_ACP, | |
1006 | locale_name, sizeof (locale_name))) | |
1007 | { | |
1008 | for (i = 0; i < (sizeof (env_vars) / sizeof (env_vars[0])); i++) | |
1009 | { | |
1010 | if (strcmp (env_vars[i].name, "LANG") == 0) | |
1011 | { | |
1012 | env_vars[i].def_value = locale_name; | |
1013 | break; | |
1014 | } | |
1015 | } | |
1016 | } | |
1017 | ||
ca149beb AI |
1018 | #define SET_ENV_BUF_SIZE (4 * MAX_PATH) /* to cover EMACSLOADPATH */ |
1019 | ||
1020 | /* Treat emacs_dir specially: set it unconditionally based on our | |
1021 | location, if it appears that we are running from the bin subdir | |
1022 | of a standard installation. */ | |
1023 | { | |
1024 | char *p; | |
1025 | char modname[MAX_PATH]; | |
1026 | ||
1027 | if (!GetModuleFileName (NULL, modname, MAX_PATH)) | |
1028 | abort (); | |
1029 | if ((p = strrchr (modname, '\\')) == NULL) | |
1030 | abort (); | |
1031 | *p = 0; | |
1032 | ||
1033 | if ((p = strrchr (modname, '\\')) && stricmp (p, "\\bin") == 0) | |
1034 | { | |
1035 | char buf[SET_ENV_BUF_SIZE]; | |
1036 | ||
1037 | *p = 0; | |
1038 | for (p = modname; *p; p++) | |
1039 | if (*p == '\\') *p = '/'; | |
177c0ea7 | 1040 | |
ca149beb | 1041 | _snprintf (buf, sizeof(buf)-1, "emacs_dir=%s", modname); |
a302c7ae | 1042 | _putenv (strdup (buf)); |
ca149beb | 1043 | } |
950090be JR |
1044 | /* Handle running emacs from the build directory: src/oo-spd/i386/ */ |
1045 | ||
1046 | /* FIXME: should use substring of get_emacs_configuration (). | |
1047 | But I don't think the Windows build supports alpha, mips etc | |
1048 | anymore, so have taken the easy option for now. */ | |
1049 | else if (p && stricmp (p, "\\i386") == 0) | |
1050 | { | |
1051 | *p = 0; | |
1052 | p = strrchr (modname, '\\'); | |
1053 | if (p != NULL) | |
1054 | { | |
1055 | *p = 0; | |
1056 | p = strrchr (modname, '\\'); | |
1057 | if (p && stricmp (p, "\\src") == 0) | |
1058 | { | |
1059 | char buf[SET_ENV_BUF_SIZE]; | |
1060 | ||
1061 | *p = 0; | |
1062 | for (p = modname; *p; p++) | |
1063 | if (*p == '\\') *p = '/'; | |
1064 | ||
1065 | _snprintf (buf, sizeof(buf)-1, "emacs_dir=%s", modname); | |
1066 | _putenv (strdup (buf)); | |
1067 | } | |
1068 | } | |
1069 | } | |
ca149beb AI |
1070 | } |
1071 | ||
69fb0241 | 1072 | for (i = 0; i < (sizeof (env_vars) / sizeof (env_vars[0])); i++) |
f332b293 | 1073 | { |
ca149beb | 1074 | if (!getenv (env_vars[i].name)) |
480b0c5b | 1075 | { |
ca149beb | 1076 | int dont_free = 0; |
480b0c5b | 1077 | |
ca149beb AI |
1078 | if ((lpval = w32_get_resource (env_vars[i].name, &dwType)) == NULL) |
1079 | { | |
1080 | lpval = env_vars[i].def_value; | |
1081 | dwType = REG_EXPAND_SZ; | |
1082 | dont_free = 1; | |
480b0c5b | 1083 | } |
ca149beb AI |
1084 | |
1085 | if (lpval) | |
480b0c5b | 1086 | { |
ca149beb AI |
1087 | if (dwType == REG_EXPAND_SZ) |
1088 | { | |
1089 | char buf1[SET_ENV_BUF_SIZE], buf2[SET_ENV_BUF_SIZE]; | |
1090 | ||
1091 | ExpandEnvironmentStrings ((LPSTR) lpval, buf1, sizeof(buf1)); | |
1092 | _snprintf (buf2, sizeof(buf2)-1, "%s=%s", env_vars[i].name, buf1); | |
a302c7ae | 1093 | _putenv (strdup (buf2)); |
ca149beb AI |
1094 | } |
1095 | else if (dwType == REG_SZ) | |
1096 | { | |
1097 | char buf[SET_ENV_BUF_SIZE]; | |
177c0ea7 | 1098 | |
ca149beb | 1099 | _snprintf (buf, sizeof(buf)-1, "%s=%s", env_vars[i].name, lpval); |
a302c7ae | 1100 | _putenv (strdup (buf)); |
ca149beb | 1101 | } |
f332b293 | 1102 | |
ca149beb AI |
1103 | if (!dont_free) |
1104 | xfree (lpval); | |
1105 | } | |
480b0c5b GV |
1106 | } |
1107 | } | |
1108 | } | |
1109 | ||
75b08edb GV |
1110 | /* Rebuild system configuration to reflect invoking system. */ |
1111 | Vsystem_configuration = build_string (EMACS_CONFIGURATION); | |
1112 | ||
76b3903d GV |
1113 | /* Another special case: on NT, the PATH variable is actually named |
1114 | "Path" although cmd.exe (perhaps NT itself) arranges for | |
1115 | environment variable lookup and setting to be case insensitive. | |
1116 | However, Emacs assumes a fully case sensitive environment, so we | |
1117 | need to change "Path" to "PATH" to match the expectations of | |
1118 | various elisp packages. We do this by the sneaky method of | |
1119 | modifying the string in the C runtime environ entry. | |
1120 | ||
1121 | The same applies to COMSPEC. */ | |
1122 | { | |
1123 | char ** envp; | |
1124 | ||
1125 | for (envp = environ; *envp; envp++) | |
1126 | if (_strnicmp (*envp, "PATH=", 5) == 0) | |
1127 | memcpy (*envp, "PATH=", 5); | |
1128 | else if (_strnicmp (*envp, "COMSPEC=", 8) == 0) | |
1129 | memcpy (*envp, "COMSPEC=", 8); | |
1130 | } | |
1131 | ||
1132 | /* Remember the initial working directory for getwd, then make the | |
1133 | real wd be the location of emacs.exe to avoid conflicts when | |
1134 | renaming or deleting directories. (We also don't call chdir when | |
1135 | running subprocesses for the same reason.) */ | |
1136 | if (!GetCurrentDirectory (MAXPATHLEN, startup_dir)) | |
1137 | abort (); | |
1138 | ||
1139 | { | |
1140 | char *p; | |
aa7b87b0 | 1141 | static char modname[MAX_PATH]; |
76b3903d GV |
1142 | |
1143 | if (!GetModuleFileName (NULL, modname, MAX_PATH)) | |
1144 | abort (); | |
1145 | if ((p = strrchr (modname, '\\')) == NULL) | |
1146 | abort (); | |
1147 | *p = 0; | |
1148 | ||
1149 | SetCurrentDirectory (modname); | |
aa7b87b0 AI |
1150 | |
1151 | /* Ensure argv[0] has the full path to Emacs. */ | |
1152 | *p = '\\'; | |
1153 | argv[0] = modname; | |
76b3903d GV |
1154 | } |
1155 | ||
20af4831 JR |
1156 | /* Determine if there is a middle mouse button, to allow parse_button |
1157 | to decide whether right mouse events should be mouse-2 or | |
1158 | mouse-3. */ | |
e0c181dd | 1159 | w32_num_mouse_buttons = GetSystemMetrics (SM_CMOUSEBUTTONS); |
20af4831 | 1160 | |
480b0c5b GV |
1161 | init_user_info (); |
1162 | } | |
1163 | ||
bf794306 EZ |
1164 | char * |
1165 | emacs_root_dir (void) | |
1166 | { | |
1167 | static char root_dir[FILENAME_MAX]; | |
1168 | const char *p; | |
1169 | ||
1170 | p = getenv ("emacs_dir"); | |
1171 | if (p == NULL) | |
1172 | abort (); | |
1173 | strcpy (root_dir, p); | |
1174 | root_dir[parse_root (root_dir, NULL)] = '\0'; | |
1175 | dostounix_filename (root_dir); | |
1176 | return root_dir; | |
1177 | } | |
1178 | ||
480b0c5b GV |
1179 | /* We don't have scripts to automatically determine the system configuration |
1180 | for Emacs before it's compiled, and we don't want to have to make the | |
1181 | user enter it, so we define EMACS_CONFIGURATION to invoke this runtime | |
1182 | routine. */ | |
1183 | ||
480b0c5b GV |
1184 | char * |
1185 | get_emacs_configuration (void) | |
1186 | { | |
1187 | char *arch, *oem, *os; | |
c5247da2 | 1188 | int build_num; |
a302c7ae | 1189 | static char configuration_buffer[32]; |
480b0c5b GV |
1190 | |
1191 | /* Determine the processor type. */ | |
177c0ea7 | 1192 | switch (get_processor_type ()) |
480b0c5b GV |
1193 | { |
1194 | ||
1195 | #ifdef PROCESSOR_INTEL_386 | |
1196 | case PROCESSOR_INTEL_386: | |
1197 | case PROCESSOR_INTEL_486: | |
1198 | case PROCESSOR_INTEL_PENTIUM: | |
1199 | arch = "i386"; | |
1200 | break; | |
1201 | #endif | |
1202 | ||
1203 | #ifdef PROCESSOR_INTEL_860 | |
1204 | case PROCESSOR_INTEL_860: | |
1205 | arch = "i860"; | |
1206 | break; | |
1207 | #endif | |
1208 | ||
1209 | #ifdef PROCESSOR_MIPS_R2000 | |
1210 | case PROCESSOR_MIPS_R2000: | |
1211 | case PROCESSOR_MIPS_R3000: | |
1212 | case PROCESSOR_MIPS_R4000: | |
1213 | arch = "mips"; | |
1214 | break; | |
1215 | #endif | |
1216 | ||
1217 | #ifdef PROCESSOR_ALPHA_21064 | |
1218 | case PROCESSOR_ALPHA_21064: | |
1219 | arch = "alpha"; | |
1220 | break; | |
1221 | #endif | |
1222 | ||
1223 | default: | |
1224 | arch = "unknown"; | |
1225 | break; | |
f332b293 | 1226 | } |
480b0c5b | 1227 | |
a302c7ae AI |
1228 | /* Use the OEM field to reflect the compiler/library combination. */ |
1229 | #ifdef _MSC_VER | |
1230 | #define COMPILER_NAME "msvc" | |
1231 | #else | |
1232 | #ifdef __GNUC__ | |
1233 | #define COMPILER_NAME "mingw" | |
1234 | #else | |
1235 | #define COMPILER_NAME "unknown" | |
1236 | #endif | |
1237 | #endif | |
1238 | oem = COMPILER_NAME; | |
480b0c5b | 1239 | |
c5247da2 GV |
1240 | switch (osinfo_cache.dwPlatformId) { |
1241 | case VER_PLATFORM_WIN32_NT: | |
1242 | os = "nt"; | |
1243 | build_num = osinfo_cache.dwBuildNumber; | |
1244 | break; | |
1245 | case VER_PLATFORM_WIN32_WINDOWS: | |
1246 | if (osinfo_cache.dwMinorVersion == 0) { | |
1247 | os = "windows95"; | |
1248 | } else { | |
1249 | os = "windows98"; | |
1250 | } | |
1251 | build_num = LOWORD (osinfo_cache.dwBuildNumber); | |
1252 | break; | |
1253 | case VER_PLATFORM_WIN32s: | |
1254 | /* Not supported, should not happen. */ | |
1255 | os = "windows32s"; | |
1256 | build_num = LOWORD (osinfo_cache.dwBuildNumber); | |
1257 | break; | |
1258 | default: | |
1259 | os = "unknown"; | |
1260 | build_num = 0; | |
1261 | break; | |
1262 | } | |
1263 | ||
1264 | if (osinfo_cache.dwPlatformId == VER_PLATFORM_WIN32_NT) { | |
1265 | sprintf (configuration_buffer, "%s-%s-%s%d.%d.%d", arch, oem, os, | |
1266 | get_w32_major_version (), get_w32_minor_version (), build_num); | |
1267 | } else { | |
1268 | sprintf (configuration_buffer, "%s-%s-%s.%d", arch, oem, os, build_num); | |
1269 | } | |
480b0c5b | 1270 | |
480b0c5b | 1271 | return configuration_buffer; |
f332b293 GV |
1272 | } |
1273 | ||
a302c7ae AI |
1274 | char * |
1275 | get_emacs_configuration_options (void) | |
1276 | { | |
1277 | static char options_buffer[256]; | |
1278 | ||
1279 | /* Work out the effective configure options for this build. */ | |
1280 | #ifdef _MSC_VER | |
1281 | #define COMPILER_VERSION "--with-msvc (%d.%02d)", _MSC_VER / 100, _MSC_VER % 100 | |
1282 | #else | |
1283 | #ifdef __GNUC__ | |
1284 | #define COMPILER_VERSION "--with-gcc (%d.%d)", __GNUC__, __GNUC_MINOR__ | |
1285 | #else | |
1286 | #define COMPILER_VERSION "" | |
1287 | #endif | |
1288 | #endif | |
1289 | ||
1290 | sprintf (options_buffer, COMPILER_VERSION); | |
1291 | #ifdef EMACSDEBUG | |
1292 | strcat (options_buffer, " --no-opt"); | |
1293 | #endif | |
1294 | #ifdef USER_CFLAGS | |
1295 | strcat (options_buffer, " --cflags"); | |
1296 | strcat (options_buffer, USER_CFLAGS); | |
1297 | #endif | |
1298 | #ifdef USER_LDFLAGS | |
1299 | strcat (options_buffer, " --ldflags"); | |
1300 | strcat (options_buffer, USER_LDFLAGS); | |
1301 | #endif | |
1302 | return options_buffer; | |
1303 | } | |
1304 | ||
1305 | ||
35f0d482 KH |
1306 | #include <sys/timeb.h> |
1307 | ||
1308 | /* Emulate gettimeofday (Ulrich Leodolter, 1/11/95). */ | |
177c0ea7 | 1309 | void |
35f0d482 KH |
1310 | gettimeofday (struct timeval *tv, struct timezone *tz) |
1311 | { | |
6e602566 | 1312 | struct _timeb tb; |
35f0d482 KH |
1313 | _ftime (&tb); |
1314 | ||
1315 | tv->tv_sec = tb.time; | |
1316 | tv->tv_usec = tb.millitm * 1000L; | |
177c0ea7 | 1317 | if (tz) |
35f0d482 KH |
1318 | { |
1319 | tz->tz_minuteswest = tb.timezone; /* minutes west of Greenwich */ | |
1320 | tz->tz_dsttime = tb.dstflag; /* type of dst correction */ | |
1321 | } | |
1322 | } | |
35f0d482 | 1323 | |
480b0c5b | 1324 | /* ------------------------------------------------------------------------- */ |
fbd6baed | 1325 | /* IO support and wrapper functions for W32 API. */ |
480b0c5b | 1326 | /* ------------------------------------------------------------------------- */ |
95ed0025 | 1327 | |
480b0c5b | 1328 | /* Place a wrapper around the MSVC version of ctime. It returns NULL |
177c0ea7 | 1329 | on network directories, so we handle that case here. |
480b0c5b GV |
1330 | (Ulrich Leodolter, 1/11/95). */ |
1331 | char * | |
1332 | sys_ctime (const time_t *t) | |
1333 | { | |
1334 | char *str = (char *) ctime (t); | |
1335 | return (str ? str : "Sun Jan 01 00:00:00 1970"); | |
1336 | } | |
1337 | ||
1338 | /* Emulate sleep...we could have done this with a define, but that | |
1339 | would necessitate including windows.h in the files that used it. | |
1340 | This is much easier. */ | |
1341 | void | |
1342 | sys_sleep (int seconds) | |
1343 | { | |
1344 | Sleep (seconds * 1000); | |
1345 | } | |
1346 | ||
76b3903d | 1347 | /* Internal MSVC functions for low-level descriptor munging */ |
480b0c5b GV |
1348 | extern int __cdecl _set_osfhnd (int fd, long h); |
1349 | extern int __cdecl _free_osfhnd (int fd); | |
1350 | ||
1351 | /* parallel array of private info on file handles */ | |
1352 | filedesc fd_info [ MAXDESC ]; | |
1353 | ||
76b3903d GV |
1354 | typedef struct volume_info_data { |
1355 | struct volume_info_data * next; | |
1356 | ||
1357 | /* time when info was obtained */ | |
1358 | DWORD timestamp; | |
1359 | ||
1360 | /* actual volume info */ | |
1361 | char * root_dir; | |
480b0c5b GV |
1362 | DWORD serialnum; |
1363 | DWORD maxcomp; | |
1364 | DWORD flags; | |
76b3903d GV |
1365 | char * name; |
1366 | char * type; | |
1367 | } volume_info_data; | |
1368 | ||
1369 | /* Global referenced by various functions. */ | |
1370 | static volume_info_data volume_info; | |
1371 | ||
1372 | /* Vector to indicate which drives are local and fixed (for which cached | |
1373 | data never expires). */ | |
1374 | static BOOL fixed_drives[26]; | |
1375 | ||
1376 | /* Consider cached volume information to be stale if older than 10s, | |
1377 | at least for non-local drives. Info for fixed drives is never stale. */ | |
1378 | #define DRIVE_INDEX( c ) ( (c) <= 'Z' ? (c) - 'A' : (c) - 'a' ) | |
1379 | #define VOLINFO_STILL_VALID( root_dir, info ) \ | |
1380 | ( ( isalpha (root_dir[0]) && \ | |
1381 | fixed_drives[ DRIVE_INDEX (root_dir[0]) ] ) \ | |
1382 | || GetTickCount () - info->timestamp < 10000 ) | |
1383 | ||
1384 | /* Cache support functions. */ | |
1385 | ||
1386 | /* Simple linked list with linear search is sufficient. */ | |
1387 | static volume_info_data *volume_cache = NULL; | |
1388 | ||
1389 | static volume_info_data * | |
1390 | lookup_volume_info (char * root_dir) | |
1391 | { | |
1392 | volume_info_data * info; | |
1393 | ||
1394 | for (info = volume_cache; info; info = info->next) | |
1395 | if (stricmp (info->root_dir, root_dir) == 0) | |
1396 | break; | |
1397 | return info; | |
1398 | } | |
1399 | ||
1400 | static void | |
1401 | add_volume_info (char * root_dir, volume_info_data * info) | |
1402 | { | |
a302c7ae | 1403 | info->root_dir = xstrdup (root_dir); |
76b3903d GV |
1404 | info->next = volume_cache; |
1405 | volume_cache = info; | |
1406 | } | |
1407 | ||
1408 | ||
1409 | /* Wrapper for GetVolumeInformation, which uses caching to avoid | |
1410 | performance penalty (~2ms on 486 for local drives, 7.5ms for local | |
1411 | cdrom drive, ~5-10ms or more for remote drives on LAN). */ | |
1412 | volume_info_data * | |
1413 | GetCachedVolumeInformation (char * root_dir) | |
1414 | { | |
1415 | volume_info_data * info; | |
1416 | char default_root[ MAX_PATH ]; | |
1417 | ||
1418 | /* NULL for root_dir means use root from current directory. */ | |
1419 | if (root_dir == NULL) | |
1420 | { | |
1421 | if (GetCurrentDirectory (MAX_PATH, default_root) == 0) | |
1422 | return NULL; | |
1423 | parse_root (default_root, &root_dir); | |
1424 | *root_dir = 0; | |
1425 | root_dir = default_root; | |
1426 | } | |
1427 | ||
1428 | /* Local fixed drives can be cached permanently. Removable drives | |
1429 | cannot be cached permanently, since the volume name and serial | |
1430 | number (if nothing else) can change. Remote drives should be | |
1431 | treated as if they are removable, since there is no sure way to | |
1432 | tell whether they are or not. Also, the UNC association of drive | |
1433 | letters mapped to remote volumes can be changed at any time (even | |
1434 | by other processes) without notice. | |
177c0ea7 | 1435 | |
76b3903d GV |
1436 | As a compromise, so we can benefit from caching info for remote |
1437 | volumes, we use a simple expiry mechanism to invalidate cache | |
1438 | entries that are more than ten seconds old. */ | |
1439 | ||
1440 | #if 0 | |
1441 | /* No point doing this, because WNetGetConnection is even slower than | |
1442 | GetVolumeInformation, consistently taking ~50ms on a 486 (FWIW, | |
1443 | GetDriveType is about the only call of this type which does not | |
1444 | involve network access, and so is extremely quick). */ | |
1445 | ||
1446 | /* Map drive letter to UNC if remote. */ | |
1447 | if ( isalpha( root_dir[0] ) && !fixed[ DRIVE_INDEX( root_dir[0] ) ] ) | |
1448 | { | |
1449 | char remote_name[ 256 ]; | |
1450 | char drive[3] = { root_dir[0], ':' }; | |
1451 | ||
1452 | if (WNetGetConnection (drive, remote_name, sizeof (remote_name)) | |
1453 | == NO_ERROR) | |
1454 | /* do something */ ; | |
1455 | } | |
1456 | #endif | |
1457 | ||
1458 | info = lookup_volume_info (root_dir); | |
1459 | ||
1460 | if (info == NULL || ! VOLINFO_STILL_VALID (root_dir, info)) | |
1461 | { | |
1462 | char name[ 256 ]; | |
1463 | DWORD serialnum; | |
1464 | DWORD maxcomp; | |
1465 | DWORD flags; | |
1466 | char type[ 256 ]; | |
1467 | ||
1468 | /* Info is not cached, or is stale. */ | |
1469 | if (!GetVolumeInformation (root_dir, | |
1470 | name, sizeof (name), | |
1471 | &serialnum, | |
1472 | &maxcomp, | |
1473 | &flags, | |
1474 | type, sizeof (type))) | |
1475 | return NULL; | |
1476 | ||
1477 | /* Cache the volume information for future use, overwriting existing | |
1478 | entry if present. */ | |
1479 | if (info == NULL) | |
1480 | { | |
1481 | info = (volume_info_data *) xmalloc (sizeof (volume_info_data)); | |
1482 | add_volume_info (root_dir, info); | |
1483 | } | |
1484 | else | |
1485 | { | |
a302c7ae AI |
1486 | xfree (info->name); |
1487 | xfree (info->type); | |
76b3903d GV |
1488 | } |
1489 | ||
a302c7ae | 1490 | info->name = xstrdup (name); |
76b3903d GV |
1491 | info->serialnum = serialnum; |
1492 | info->maxcomp = maxcomp; | |
1493 | info->flags = flags; | |
a302c7ae | 1494 | info->type = xstrdup (type); |
76b3903d GV |
1495 | info->timestamp = GetTickCount (); |
1496 | } | |
1497 | ||
1498 | return info; | |
1499 | } | |
480b0c5b GV |
1500 | |
1501 | /* Get information on the volume where name is held; set path pointer to | |
1502 | start of pathname in name (past UNC header\volume header if present). */ | |
1503 | int | |
1504 | get_volume_info (const char * name, const char ** pPath) | |
95ed0025 | 1505 | { |
480b0c5b GV |
1506 | char temp[MAX_PATH]; |
1507 | char *rootname = NULL; /* default to current volume */ | |
76b3903d | 1508 | volume_info_data * info; |
480b0c5b GV |
1509 | |
1510 | if (name == NULL) | |
1511 | return FALSE; | |
1512 | ||
1513 | /* find the root name of the volume if given */ | |
1514 | if (isalpha (name[0]) && name[1] == ':') | |
1515 | { | |
1516 | rootname = temp; | |
1517 | temp[0] = *name++; | |
1518 | temp[1] = *name++; | |
1519 | temp[2] = '\\'; | |
1520 | temp[3] = 0; | |
1521 | } | |
1522 | else if (IS_DIRECTORY_SEP (name[0]) && IS_DIRECTORY_SEP (name[1])) | |
95ed0025 | 1523 | { |
480b0c5b GV |
1524 | char *str = temp; |
1525 | int slashes = 4; | |
1526 | rootname = temp; | |
1527 | do | |
1528 | { | |
1529 | if (IS_DIRECTORY_SEP (*name) && --slashes == 0) | |
1530 | break; | |
1531 | *str++ = *name++; | |
1532 | } | |
1533 | while ( *name ); | |
1534 | ||
480b0c5b GV |
1535 | *str++ = '\\'; |
1536 | *str = 0; | |
95ed0025 | 1537 | } |
480b0c5b GV |
1538 | |
1539 | if (pPath) | |
1540 | *pPath = name; | |
177c0ea7 | 1541 | |
76b3903d GV |
1542 | info = GetCachedVolumeInformation (rootname); |
1543 | if (info != NULL) | |
95ed0025 | 1544 | { |
76b3903d GV |
1545 | /* Set global referenced by other functions. */ |
1546 | volume_info = *info; | |
480b0c5b | 1547 | return TRUE; |
95ed0025 | 1548 | } |
480b0c5b GV |
1549 | return FALSE; |
1550 | } | |
1551 | ||
1552 | /* Determine if volume is FAT format (ie. only supports short 8.3 | |
1553 | names); also set path pointer to start of pathname in name. */ | |
1554 | int | |
1555 | is_fat_volume (const char * name, const char ** pPath) | |
1556 | { | |
1557 | if (get_volume_info (name, pPath)) | |
1558 | return (volume_info.maxcomp == 12); | |
1559 | return FALSE; | |
1560 | } | |
1561 | ||
1562 | /* Map filename to a legal 8.3 name if necessary. */ | |
1563 | const char * | |
fbd6baed | 1564 | map_w32_filename (const char * name, const char ** pPath) |
480b0c5b GV |
1565 | { |
1566 | static char shortname[MAX_PATH]; | |
1567 | char * str = shortname; | |
1568 | char c; | |
480b0c5b | 1569 | char * path; |
76b3903d | 1570 | const char * save_name = name; |
480b0c5b | 1571 | |
ca149beb AI |
1572 | if (strlen (name) >= MAX_PATH) |
1573 | { | |
1574 | /* Return a filename which will cause callers to fail. */ | |
1575 | strcpy (shortname, "?"); | |
1576 | return shortname; | |
1577 | } | |
1578 | ||
a302c7ae | 1579 | if (is_fat_volume (name, (const char **)&path)) /* truncate to 8.3 */ |
95ed0025 | 1580 | { |
480b0c5b GV |
1581 | register int left = 8; /* maximum number of chars in part */ |
1582 | register int extn = 0; /* extension added? */ | |
1583 | register int dots = 2; /* maximum number of dots allowed */ | |
1584 | ||
1585 | while (name < path) | |
1586 | *str++ = *name++; /* skip past UNC header */ | |
1587 | ||
1588 | while ((c = *name++)) | |
1589 | { | |
1590 | switch ( c ) | |
1591 | { | |
1592 | case '\\': | |
1593 | case '/': | |
1594 | *str++ = '\\'; | |
1595 | extn = 0; /* reset extension flags */ | |
1596 | dots = 2; /* max 2 dots */ | |
1597 | left = 8; /* max length 8 for main part */ | |
1598 | break; | |
1599 | case ':': | |
1600 | *str++ = ':'; | |
1601 | extn = 0; /* reset extension flags */ | |
1602 | dots = 2; /* max 2 dots */ | |
1603 | left = 8; /* max length 8 for main part */ | |
1604 | break; | |
1605 | case '.': | |
1606 | if ( dots ) | |
1607 | { | |
1608 | /* Convert path components of the form .xxx to _xxx, | |
1609 | but leave . and .. as they are. This allows .emacs | |
1610 | to be read as _emacs, for example. */ | |
1611 | ||
1612 | if (! *name || | |
1613 | *name == '.' || | |
1614 | IS_DIRECTORY_SEP (*name)) | |
1615 | { | |
1616 | *str++ = '.'; | |
1617 | dots--; | |
1618 | } | |
1619 | else | |
1620 | { | |
1621 | *str++ = '_'; | |
1622 | left--; | |
1623 | dots = 0; | |
1624 | } | |
1625 | } | |
1626 | else if ( !extn ) | |
1627 | { | |
1628 | *str++ = '.'; | |
1629 | extn = 1; /* we've got an extension */ | |
1630 | left = 3; /* 3 chars in extension */ | |
1631 | } | |
1632 | else | |
1633 | { | |
1634 | /* any embedded dots after the first are converted to _ */ | |
1635 | *str++ = '_'; | |
1636 | } | |
1637 | break; | |
1638 | case '~': | |
1639 | case '#': /* don't lose these, they're important */ | |
1640 | if ( ! left ) | |
1641 | str[-1] = c; /* replace last character of part */ | |
1642 | /* FALLTHRU */ | |
1643 | default: | |
1644 | if ( left ) | |
1645 | { | |
1646 | *str++ = tolower (c); /* map to lower case (looks nicer) */ | |
1647 | left--; | |
1648 | dots = 0; /* started a path component */ | |
1649 | } | |
1650 | break; | |
1651 | } | |
1652 | } | |
1653 | *str = '\0'; | |
fc85cb29 RS |
1654 | } |
1655 | else | |
1656 | { | |
1657 | strcpy (shortname, name); | |
1658 | unixtodos_filename (shortname); | |
95ed0025 | 1659 | } |
480b0c5b GV |
1660 | |
1661 | if (pPath) | |
76b3903d | 1662 | *pPath = shortname + (path - save_name); |
480b0c5b | 1663 | |
fc85cb29 | 1664 | return shortname; |
480b0c5b GV |
1665 | } |
1666 | ||
b3308d2e KH |
1667 | static int |
1668 | is_exec (const char * name) | |
1669 | { | |
1670 | char * p = strrchr (name, '.'); | |
1671 | return | |
1672 | (p != NULL | |
1673 | && (stricmp (p, ".exe") == 0 || | |
1674 | stricmp (p, ".com") == 0 || | |
1675 | stricmp (p, ".bat") == 0 || | |
1676 | stricmp (p, ".cmd") == 0)); | |
1677 | } | |
1678 | ||
177c0ea7 | 1679 | /* Emulate the Unix directory procedures opendir, closedir, |
76b3903d GV |
1680 | and readdir. We can't use the procedures supplied in sysdep.c, |
1681 | so we provide them here. */ | |
1682 | ||
1683 | struct direct dir_static; /* simulated directory contents */ | |
1684 | static HANDLE dir_find_handle = INVALID_HANDLE_VALUE; | |
1685 | static int dir_is_fat; | |
1686 | static char dir_pathname[MAXPATHLEN+1]; | |
1687 | static WIN32_FIND_DATA dir_find_data; | |
1688 | ||
9d3355d1 GV |
1689 | /* Support shares on a network resource as subdirectories of a read-only |
1690 | root directory. */ | |
1691 | static HANDLE wnet_enum_handle = INVALID_HANDLE_VALUE; | |
e0c181dd | 1692 | HANDLE open_unc_volume (const char *); |
9d3355d1 GV |
1693 | char *read_unc_volume (HANDLE, char *, int); |
1694 | void close_unc_volume (HANDLE); | |
1695 | ||
76b3903d GV |
1696 | DIR * |
1697 | opendir (char *filename) | |
1698 | { | |
1699 | DIR *dirp; | |
1700 | ||
1701 | /* Opening is done by FindFirstFile. However, a read is inherent to | |
1702 | this operation, so we defer the open until read time. */ | |
1703 | ||
76b3903d GV |
1704 | if (dir_find_handle != INVALID_HANDLE_VALUE) |
1705 | return NULL; | |
9d3355d1 GV |
1706 | if (wnet_enum_handle != INVALID_HANDLE_VALUE) |
1707 | return NULL; | |
1708 | ||
1709 | if (is_unc_volume (filename)) | |
1710 | { | |
1711 | wnet_enum_handle = open_unc_volume (filename); | |
1712 | if (wnet_enum_handle == INVALID_HANDLE_VALUE) | |
1713 | return NULL; | |
1714 | } | |
1715 | ||
1716 | if (!(dirp = (DIR *) malloc (sizeof (DIR)))) | |
1717 | return NULL; | |
76b3903d GV |
1718 | |
1719 | dirp->dd_fd = 0; | |
1720 | dirp->dd_loc = 0; | |
1721 | dirp->dd_size = 0; | |
1722 | ||
1723 | strncpy (dir_pathname, map_w32_filename (filename, NULL), MAXPATHLEN); | |
1724 | dir_pathname[MAXPATHLEN] = '\0'; | |
1725 | dir_is_fat = is_fat_volume (filename, NULL); | |
1726 | ||
1727 | return dirp; | |
1728 | } | |
1729 | ||
1730 | void | |
1731 | closedir (DIR *dirp) | |
1732 | { | |
1733 | /* If we have a find-handle open, close it. */ | |
1734 | if (dir_find_handle != INVALID_HANDLE_VALUE) | |
1735 | { | |
1736 | FindClose (dir_find_handle); | |
1737 | dir_find_handle = INVALID_HANDLE_VALUE; | |
1738 | } | |
9d3355d1 GV |
1739 | else if (wnet_enum_handle != INVALID_HANDLE_VALUE) |
1740 | { | |
1741 | close_unc_volume (wnet_enum_handle); | |
1742 | wnet_enum_handle = INVALID_HANDLE_VALUE; | |
1743 | } | |
76b3903d GV |
1744 | xfree ((char *) dirp); |
1745 | } | |
1746 | ||
1747 | struct direct * | |
1748 | readdir (DIR *dirp) | |
1749 | { | |
9d3355d1 GV |
1750 | if (wnet_enum_handle != INVALID_HANDLE_VALUE) |
1751 | { | |
177c0ea7 JB |
1752 | if (!read_unc_volume (wnet_enum_handle, |
1753 | dir_find_data.cFileName, | |
9d3355d1 GV |
1754 | MAX_PATH)) |
1755 | return NULL; | |
1756 | } | |
76b3903d | 1757 | /* If we aren't dir_finding, do a find-first, otherwise do a find-next. */ |
9d3355d1 | 1758 | else if (dir_find_handle == INVALID_HANDLE_VALUE) |
76b3903d GV |
1759 | { |
1760 | char filename[MAXNAMLEN + 3]; | |
1761 | int ln; | |
1762 | ||
1763 | strcpy (filename, dir_pathname); | |
1764 | ln = strlen (filename) - 1; | |
1765 | if (!IS_DIRECTORY_SEP (filename[ln])) | |
1766 | strcat (filename, "\\"); | |
1767 | strcat (filename, "*"); | |
1768 | ||
1769 | dir_find_handle = FindFirstFile (filename, &dir_find_data); | |
1770 | ||
1771 | if (dir_find_handle == INVALID_HANDLE_VALUE) | |
1772 | return NULL; | |
1773 | } | |
1774 | else | |
1775 | { | |
1776 | if (!FindNextFile (dir_find_handle, &dir_find_data)) | |
1777 | return NULL; | |
1778 | } | |
177c0ea7 | 1779 | |
76b3903d GV |
1780 | /* Emacs never uses this value, so don't bother making it match |
1781 | value returned by stat(). */ | |
1782 | dir_static.d_ino = 1; | |
177c0ea7 | 1783 | |
76b3903d GV |
1784 | dir_static.d_reclen = sizeof (struct direct) - MAXNAMLEN + 3 + |
1785 | dir_static.d_namlen - dir_static.d_namlen % 4; | |
177c0ea7 | 1786 | |
76b3903d GV |
1787 | dir_static.d_namlen = strlen (dir_find_data.cFileName); |
1788 | strcpy (dir_static.d_name, dir_find_data.cFileName); | |
1789 | if (dir_is_fat) | |
1790 | _strlwr (dir_static.d_name); | |
1791 | else if (!NILP (Vw32_downcase_file_names)) | |
1792 | { | |
1793 | register char *p; | |
1794 | for (p = dir_static.d_name; *p; p++) | |
1795 | if (*p >= 'a' && *p <= 'z') | |
1796 | break; | |
1797 | if (!*p) | |
1798 | _strlwr (dir_static.d_name); | |
1799 | } | |
177c0ea7 | 1800 | |
76b3903d GV |
1801 | return &dir_static; |
1802 | } | |
1803 | ||
9d3355d1 | 1804 | HANDLE |
e0c181dd | 1805 | open_unc_volume (const char *path) |
9d3355d1 | 1806 | { |
177c0ea7 | 1807 | NETRESOURCE nr; |
9d3355d1 GV |
1808 | HANDLE henum; |
1809 | int result; | |
1810 | ||
177c0ea7 JB |
1811 | nr.dwScope = RESOURCE_GLOBALNET; |
1812 | nr.dwType = RESOURCETYPE_DISK; | |
1813 | nr.dwDisplayType = RESOURCEDISPLAYTYPE_SERVER; | |
1814 | nr.dwUsage = RESOURCEUSAGE_CONTAINER; | |
1815 | nr.lpLocalName = NULL; | |
6e602566 | 1816 | nr.lpRemoteName = (LPSTR)map_w32_filename (path, NULL); |
177c0ea7 JB |
1817 | nr.lpComment = NULL; |
1818 | nr.lpProvider = NULL; | |
9d3355d1 | 1819 | |
177c0ea7 | 1820 | result = WNetOpenEnum(RESOURCE_GLOBALNET, RESOURCETYPE_DISK, |
9d3355d1 GV |
1821 | RESOURCEUSAGE_CONNECTABLE, &nr, &henum); |
1822 | ||
1823 | if (result == NO_ERROR) | |
1824 | return henum; | |
1825 | else | |
1826 | return INVALID_HANDLE_VALUE; | |
1827 | } | |
1828 | ||
1829 | char * | |
1830 | read_unc_volume (HANDLE henum, char *readbuf, int size) | |
1831 | { | |
a302c7ae | 1832 | DWORD count; |
9d3355d1 | 1833 | int result; |
a302c7ae | 1834 | DWORD bufsize = 512; |
9d3355d1 GV |
1835 | char *buffer; |
1836 | char *ptr; | |
1837 | ||
1838 | count = 1; | |
1839 | buffer = alloca (bufsize); | |
1840 | result = WNetEnumResource (wnet_enum_handle, &count, buffer, &bufsize); | |
1841 | if (result != NO_ERROR) | |
1842 | return NULL; | |
1843 | ||
1844 | /* WNetEnumResource returns \\resource\share...skip forward to "share". */ | |
1845 | ptr = ((LPNETRESOURCE) buffer)->lpRemoteName; | |
1846 | ptr += 2; | |
1847 | while (*ptr && !IS_DIRECTORY_SEP (*ptr)) ptr++; | |
1848 | ptr++; | |
1849 | ||
1850 | strncpy (readbuf, ptr, size); | |
1851 | return readbuf; | |
1852 | } | |
1853 | ||
1854 | void | |
1855 | close_unc_volume (HANDLE henum) | |
1856 | { | |
1857 | if (henum != INVALID_HANDLE_VALUE) | |
1858 | WNetCloseEnum (henum); | |
1859 | } | |
1860 | ||
1861 | DWORD | |
e0c181dd | 1862 | unc_volume_file_attributes (const char *path) |
9d3355d1 GV |
1863 | { |
1864 | HANDLE henum; | |
1865 | DWORD attrs; | |
1866 | ||
1867 | henum = open_unc_volume (path); | |
1868 | if (henum == INVALID_HANDLE_VALUE) | |
1869 | return -1; | |
1870 | ||
1871 | attrs = FILE_ATTRIBUTE_READONLY | FILE_ATTRIBUTE_DIRECTORY; | |
1872 | ||
1873 | close_unc_volume (henum); | |
1874 | ||
1875 | return attrs; | |
1876 | } | |
1877 | ||
480b0c5b GV |
1878 | |
1879 | /* Shadow some MSVC runtime functions to map requests for long filenames | |
1880 | to reasonable short names if necessary. This was originally added to | |
177c0ea7 | 1881 | permit running Emacs on NT 3.1 on a FAT partition, which doesn't support |
480b0c5b GV |
1882 | long file names. */ |
1883 | ||
1884 | int | |
1885 | sys_access (const char * path, int mode) | |
1886 | { | |
b3308d2e KH |
1887 | DWORD attributes; |
1888 | ||
1889 | /* MSVC implementation doesn't recognize D_OK. */ | |
1890 | path = map_w32_filename (path, NULL); | |
9d3355d1 GV |
1891 | if (is_unc_volume (path)) |
1892 | { | |
1893 | attributes = unc_volume_file_attributes (path); | |
1894 | if (attributes == -1) { | |
1895 | errno = EACCES; | |
1896 | return -1; | |
1897 | } | |
1898 | } | |
1899 | else if ((attributes = GetFileAttributes (path)) == -1) | |
b3308d2e KH |
1900 | { |
1901 | /* Should try mapping GetLastError to errno; for now just indicate | |
1902 | that path doesn't exist. */ | |
1903 | errno = EACCES; | |
1904 | return -1; | |
1905 | } | |
1906 | if ((mode & X_OK) != 0 && !is_exec (path)) | |
1907 | { | |
1908 | errno = EACCES; | |
1909 | return -1; | |
1910 | } | |
1911 | if ((mode & W_OK) != 0 && (attributes & FILE_ATTRIBUTE_READONLY) != 0) | |
1912 | { | |
1913 | errno = EACCES; | |
1914 | return -1; | |
1915 | } | |
1916 | if ((mode & D_OK) != 0 && (attributes & FILE_ATTRIBUTE_DIRECTORY) == 0) | |
1917 | { | |
1918 | errno = EACCES; | |
1919 | return -1; | |
1920 | } | |
1921 | return 0; | |
480b0c5b GV |
1922 | } |
1923 | ||
1924 | int | |
1925 | sys_chdir (const char * path) | |
1926 | { | |
fbd6baed | 1927 | return _chdir (map_w32_filename (path, NULL)); |
480b0c5b GV |
1928 | } |
1929 | ||
1930 | int | |
1931 | sys_chmod (const char * path, int mode) | |
1932 | { | |
fbd6baed | 1933 | return _chmod (map_w32_filename (path, NULL), mode); |
480b0c5b GV |
1934 | } |
1935 | ||
2d5ab4bf EZ |
1936 | int |
1937 | sys_chown (const char *path, uid_t owner, gid_t group) | |
1938 | { | |
1939 | if (sys_chmod (path, _S_IREAD) == -1) /* check if file exists */ | |
1940 | return -1; | |
1941 | return 0; | |
1942 | } | |
1943 | ||
480b0c5b GV |
1944 | int |
1945 | sys_creat (const char * path, int mode) | |
1946 | { | |
fbd6baed | 1947 | return _creat (map_w32_filename (path, NULL), mode); |
480b0c5b GV |
1948 | } |
1949 | ||
1950 | FILE * | |
1951 | sys_fopen(const char * path, const char * mode) | |
1952 | { | |
1953 | int fd; | |
1954 | int oflag; | |
1955 | const char * mode_save = mode; | |
1956 | ||
1957 | /* Force all file handles to be non-inheritable. This is necessary to | |
1958 | ensure child processes don't unwittingly inherit handles that might | |
1959 | prevent future file access. */ | |
1960 | ||
1961 | if (mode[0] == 'r') | |
1962 | oflag = O_RDONLY; | |
1963 | else if (mode[0] == 'w' || mode[0] == 'a') | |
1964 | oflag = O_WRONLY | O_CREAT | O_TRUNC; | |
95ed0025 | 1965 | else |
480b0c5b GV |
1966 | return NULL; |
1967 | ||
1968 | /* Only do simplistic option parsing. */ | |
1969 | while (*++mode) | |
1970 | if (mode[0] == '+') | |
1971 | { | |
1972 | oflag &= ~(O_RDONLY | O_WRONLY); | |
1973 | oflag |= O_RDWR; | |
1974 | } | |
1975 | else if (mode[0] == 'b') | |
1976 | { | |
1977 | oflag &= ~O_TEXT; | |
1978 | oflag |= O_BINARY; | |
1979 | } | |
1980 | else if (mode[0] == 't') | |
1981 | { | |
1982 | oflag &= ~O_BINARY; | |
1983 | oflag |= O_TEXT; | |
1984 | } | |
1985 | else break; | |
1986 | ||
fbd6baed | 1987 | fd = _open (map_w32_filename (path, NULL), oflag | _O_NOINHERIT, 0644); |
480b0c5b GV |
1988 | if (fd < 0) |
1989 | return NULL; | |
1990 | ||
76b3903d | 1991 | return _fdopen (fd, mode_save); |
95ed0025 | 1992 | } |
480b0c5b | 1993 | |
76b3903d | 1994 | /* This only works on NTFS volumes, but is useful to have. */ |
480b0c5b | 1995 | int |
76b3903d | 1996 | sys_link (const char * old, const char * new) |
480b0c5b | 1997 | { |
76b3903d GV |
1998 | HANDLE fileh; |
1999 | int result = -1; | |
2000 | char oldname[MAX_PATH], newname[MAX_PATH]; | |
2001 | ||
2002 | if (old == NULL || new == NULL) | |
2003 | { | |
2004 | errno = ENOENT; | |
2005 | return -1; | |
2006 | } | |
2007 | ||
2008 | strcpy (oldname, map_w32_filename (old, NULL)); | |
2009 | strcpy (newname, map_w32_filename (new, NULL)); | |
2010 | ||
2011 | fileh = CreateFile (oldname, 0, 0, NULL, OPEN_EXISTING, | |
2012 | FILE_FLAG_BACKUP_SEMANTICS, NULL); | |
2013 | if (fileh != INVALID_HANDLE_VALUE) | |
2014 | { | |
2015 | int wlen; | |
2016 | ||
2017 | /* Confusingly, the "alternate" stream name field does not apply | |
2018 | when restoring a hard link, and instead contains the actual | |
2019 | stream data for the link (ie. the name of the link to create). | |
2020 | The WIN32_STREAM_ID structure before the cStreamName field is | |
2021 | the stream header, which is then immediately followed by the | |
2022 | stream data. */ | |
2023 | ||
2024 | struct { | |
2025 | WIN32_STREAM_ID wid; | |
2026 | WCHAR wbuffer[MAX_PATH]; /* extra space for link name */ | |
2027 | } data; | |
2028 | ||
2029 | wlen = MultiByteToWideChar (CP_ACP, MB_PRECOMPOSED, newname, -1, | |
2030 | data.wid.cStreamName, MAX_PATH); | |
2031 | if (wlen > 0) | |
2032 | { | |
2033 | LPVOID context = NULL; | |
2034 | DWORD wbytes = 0; | |
2035 | ||
2036 | data.wid.dwStreamId = BACKUP_LINK; | |
2037 | data.wid.dwStreamAttributes = 0; | |
2038 | data.wid.Size.LowPart = wlen * sizeof(WCHAR); | |
2039 | data.wid.Size.HighPart = 0; | |
2040 | data.wid.dwStreamNameSize = 0; | |
2041 | ||
2042 | if (BackupWrite (fileh, (LPBYTE)&data, | |
2043 | offsetof (WIN32_STREAM_ID, cStreamName) | |
2044 | + data.wid.Size.LowPart, | |
2045 | &wbytes, FALSE, FALSE, &context) | |
2046 | && BackupWrite (fileh, NULL, 0, &wbytes, TRUE, FALSE, &context)) | |
2047 | { | |
2048 | /* succeeded */ | |
2049 | result = 0; | |
2050 | } | |
2051 | else | |
2052 | { | |
2053 | /* Should try mapping GetLastError to errno; for now just | |
2054 | indicate a general error (eg. links not supported). */ | |
2055 | errno = EINVAL; // perhaps EMLINK? | |
2056 | } | |
2057 | } | |
2058 | ||
2059 | CloseHandle (fileh); | |
2060 | } | |
2061 | else | |
2062 | errno = ENOENT; | |
2063 | ||
2064 | return result; | |
480b0c5b GV |
2065 | } |
2066 | ||
2067 | int | |
2068 | sys_mkdir (const char * path) | |
2069 | { | |
fbd6baed | 2070 | return _mkdir (map_w32_filename (path, NULL)); |
480b0c5b GV |
2071 | } |
2072 | ||
9d1778b1 RS |
2073 | /* Because of long name mapping issues, we need to implement this |
2074 | ourselves. Also, MSVC's _mktemp returns NULL when it can't generate | |
2075 | a unique name, instead of setting the input template to an empty | |
2076 | string. | |
2077 | ||
2078 | Standard algorithm seems to be use pid or tid with a letter on the | |
2079 | front (in place of the 6 X's) and cycle through the letters to find a | |
2080 | unique name. We extend that to allow any reasonable character as the | |
2081 | first of the 6 X's. */ | |
480b0c5b GV |
2082 | char * |
2083 | sys_mktemp (char * template) | |
2084 | { | |
9d1778b1 RS |
2085 | char * p; |
2086 | int i; | |
2087 | unsigned uid = GetCurrentThreadId (); | |
2088 | static char first_char[] = "abcdefghijklmnopqrstuvwyz0123456789!%-_@#"; | |
2089 | ||
2090 | if (template == NULL) | |
2091 | return NULL; | |
2092 | p = template + strlen (template); | |
2093 | i = 5; | |
2094 | /* replace up to the last 5 X's with uid in decimal */ | |
2095 | while (--p >= template && p[0] == 'X' && --i >= 0) | |
2096 | { | |
2097 | p[0] = '0' + uid % 10; | |
2098 | uid /= 10; | |
2099 | } | |
2100 | ||
2101 | if (i < 0 && p[0] == 'X') | |
2102 | { | |
2103 | i = 0; | |
2104 | do | |
2105 | { | |
2106 | int save_errno = errno; | |
2107 | p[0] = first_char[i]; | |
2108 | if (sys_access (template, 0) < 0) | |
2109 | { | |
2110 | errno = save_errno; | |
2111 | return template; | |
2112 | } | |
2113 | } | |
2114 | while (++i < sizeof (first_char)); | |
2115 | } | |
2116 | ||
2117 | /* Template is badly formed or else we can't generate a unique name, | |
2118 | so return empty string */ | |
2119 | template[0] = 0; | |
2120 | return template; | |
480b0c5b GV |
2121 | } |
2122 | ||
2123 | int | |
2124 | sys_open (const char * path, int oflag, int mode) | |
2125 | { | |
302f0b29 GM |
2126 | const char* mpath = map_w32_filename (path, NULL); |
2127 | /* Try to open file without _O_CREAT, to be able to write to hidden | |
2128 | and system files. Force all file handles to be | |
2129 | non-inheritable. */ | |
2130 | int res = _open (mpath, (oflag & ~_O_CREAT) | _O_NOINHERIT, mode); | |
2131 | if (res >= 0) | |
2132 | return res; | |
2133 | return _open (mpath, oflag | _O_NOINHERIT, mode); | |
480b0c5b GV |
2134 | } |
2135 | ||
2136 | int | |
2137 | sys_rename (const char * oldname, const char * newname) | |
2138 | { | |
cfb5e855 | 2139 | BOOL result; |
b3308d2e | 2140 | char temp[MAX_PATH]; |
480b0c5b | 2141 | |
e9e23e23 | 2142 | /* MoveFile on Windows 95 doesn't correctly change the short file name |
5162ffce MB |
2143 | alias in a number of circumstances (it is not easy to predict when |
2144 | just by looking at oldname and newname, unfortunately). In these | |
2145 | cases, renaming through a temporary name avoids the problem. | |
2146 | ||
e9e23e23 | 2147 | A second problem on Windows 95 is that renaming through a temp name when |
5162ffce MB |
2148 | newname is uppercase fails (the final long name ends up in |
2149 | lowercase, although the short alias might be uppercase) UNLESS the | |
2150 | long temp name is not 8.3. | |
2151 | ||
e9e23e23 | 2152 | So, on Windows 95 we always rename through a temp name, and we make sure |
5162ffce | 2153 | the temp name has a long extension to ensure correct renaming. */ |
480b0c5b | 2154 | |
fbd6baed | 2155 | strcpy (temp, map_w32_filename (oldname, NULL)); |
480b0c5b | 2156 | |
76b3903d | 2157 | if (os_subtype == OS_WIN95) |
480b0c5b | 2158 | { |
b3308d2e | 2159 | char * o; |
480b0c5b | 2160 | char * p; |
b3308d2e KH |
2161 | int i = 0; |
2162 | ||
2163 | oldname = map_w32_filename (oldname, NULL); | |
2164 | if (o = strrchr (oldname, '\\')) | |
2165 | o++; | |
2166 | else | |
2167 | o = (char *) oldname; | |
480b0c5b | 2168 | |
480b0c5b GV |
2169 | if (p = strrchr (temp, '\\')) |
2170 | p++; | |
2171 | else | |
2172 | p = temp; | |
b3308d2e KH |
2173 | |
2174 | do | |
2175 | { | |
2176 | /* Force temp name to require a manufactured 8.3 alias - this | |
2177 | seems to make the second rename work properly. */ | |
f313ee82 | 2178 | sprintf (p, "_.%s.%u", o, i); |
b3308d2e | 2179 | i++; |
58f0cb7e | 2180 | result = rename (oldname, temp); |
b3308d2e KH |
2181 | } |
2182 | /* This loop must surely terminate! */ | |
cfb5e855 | 2183 | while (result < 0 && errno == EEXIST); |
58f0cb7e | 2184 | if (result < 0) |
480b0c5b GV |
2185 | return -1; |
2186 | } | |
2187 | ||
2188 | /* Emulate Unix behaviour - newname is deleted if it already exists | |
5162ffce | 2189 | (at least if it is a file; don't do this for directories). |
76b3903d | 2190 | |
b3308d2e KH |
2191 | Since we mustn't do this if we are just changing the case of the |
2192 | file name (we would end up deleting the file we are trying to | |
2193 | rename!), we let rename detect if the destination file already | |
2194 | exists - that way we avoid the possible pitfalls of trying to | |
2195 | determine ourselves whether two names really refer to the same | |
2196 | file, which is not always possible in the general case. (Consider | |
2197 | all the permutations of shared or subst'd drives, etc.) */ | |
2198 | ||
2199 | newname = map_w32_filename (newname, NULL); | |
eb9ea53f | 2200 | result = rename (temp, newname); |
b3308d2e KH |
2201 | |
2202 | if (result < 0 | |
cfb5e855 | 2203 | && errno == EEXIST |
b3308d2e KH |
2204 | && _chmod (newname, 0666) == 0 |
2205 | && _unlink (newname) == 0) | |
2206 | result = rename (temp, newname); | |
480b0c5b | 2207 | |
eb9ea53f | 2208 | return result; |
480b0c5b GV |
2209 | } |
2210 | ||
2211 | int | |
2212 | sys_rmdir (const char * path) | |
2213 | { | |
fbd6baed | 2214 | return _rmdir (map_w32_filename (path, NULL)); |
480b0c5b GV |
2215 | } |
2216 | ||
2217 | int | |
2218 | sys_unlink (const char * path) | |
2219 | { | |
16bb7578 GV |
2220 | path = map_w32_filename (path, NULL); |
2221 | ||
2222 | /* On Unix, unlink works without write permission. */ | |
2223 | _chmod (path, 0666); | |
2224 | return _unlink (path); | |
480b0c5b GV |
2225 | } |
2226 | ||
2227 | static FILETIME utc_base_ft; | |
2228 | static long double utc_base; | |
2229 | static int init = 0; | |
2230 | ||
2231 | static time_t | |
2232 | convert_time (FILETIME ft) | |
2233 | { | |
2234 | long double ret; | |
2235 | ||
2236 | if (!init) | |
2237 | { | |
2238 | /* Determine the delta between 1-Jan-1601 and 1-Jan-1970. */ | |
2239 | SYSTEMTIME st; | |
2240 | ||
2241 | st.wYear = 1970; | |
2242 | st.wMonth = 1; | |
2243 | st.wDay = 1; | |
2244 | st.wHour = 0; | |
2245 | st.wMinute = 0; | |
2246 | st.wSecond = 0; | |
2247 | st.wMilliseconds = 0; | |
2248 | ||
2249 | SystemTimeToFileTime (&st, &utc_base_ft); | |
2250 | utc_base = (long double) utc_base_ft.dwHighDateTime | |
2251 | * 4096 * 1024 * 1024 + utc_base_ft.dwLowDateTime; | |
2252 | init = 1; | |
2253 | } | |
2254 | ||
2255 | if (CompareFileTime (&ft, &utc_base_ft) < 0) | |
2256 | return 0; | |
2257 | ||
2258 | ret = (long double) ft.dwHighDateTime * 4096 * 1024 * 1024 + ft.dwLowDateTime; | |
2259 | ret -= utc_base; | |
2260 | return (time_t) (ret * 1e-7); | |
2261 | } | |
2262 | ||
480b0c5b GV |
2263 | void |
2264 | convert_from_time_t (time_t time, FILETIME * pft) | |
2265 | { | |
2266 | long double tmp; | |
2267 | ||
2268 | if (!init) | |
2269 | { | |
2270 | /* Determine the delta between 1-Jan-1601 and 1-Jan-1970. */ | |
2271 | SYSTEMTIME st; | |
2272 | ||
2273 | st.wYear = 1970; | |
2274 | st.wMonth = 1; | |
2275 | st.wDay = 1; | |
2276 | st.wHour = 0; | |
2277 | st.wMinute = 0; | |
2278 | st.wSecond = 0; | |
2279 | st.wMilliseconds = 0; | |
2280 | ||
2281 | SystemTimeToFileTime (&st, &utc_base_ft); | |
2282 | utc_base = (long double) utc_base_ft.dwHighDateTime | |
2283 | * 4096 * 1024 * 1024 + utc_base_ft.dwLowDateTime; | |
2284 | init = 1; | |
2285 | } | |
2286 | ||
2287 | /* time in 100ns units since 1-Jan-1601 */ | |
2288 | tmp = (long double) time * 1e7 + utc_base; | |
2289 | pft->dwHighDateTime = (DWORD) (tmp / (4096.0 * 1024 * 1024)); | |
16bb7578 | 2290 | pft->dwLowDateTime = (DWORD) (tmp - (4096.0 * 1024 * 1024) * pft->dwHighDateTime); |
480b0c5b | 2291 | } |
480b0c5b | 2292 | |
76b3903d GV |
2293 | #if 0 |
2294 | /* No reason to keep this; faking inode values either by hashing or even | |
2295 | using the file index from GetInformationByHandle, is not perfect and | |
2296 | so by default Emacs doesn't use the inode values on Windows. | |
2297 | Instead, we now determine file-truename correctly (except for | |
2298 | possible drive aliasing etc). */ | |
2299 | ||
2300 | /* Modified version of "PJW" algorithm (see the "Dragon" compiler book). */ | |
480b0c5b | 2301 | static unsigned |
76b3903d | 2302 | hashval (const unsigned char * str) |
480b0c5b GV |
2303 | { |
2304 | unsigned h = 0; | |
480b0c5b GV |
2305 | while (*str) |
2306 | { | |
2307 | h = (h << 4) + *str++; | |
76b3903d | 2308 | h ^= (h >> 28); |
480b0c5b GV |
2309 | } |
2310 | return h; | |
2311 | } | |
2312 | ||
2313 | /* Return the hash value of the canonical pathname, excluding the | |
2314 | drive/UNC header, to get a hopefully unique inode number. */ | |
76b3903d | 2315 | static DWORD |
480b0c5b GV |
2316 | generate_inode_val (const char * name) |
2317 | { | |
2318 | char fullname[ MAX_PATH ]; | |
2319 | char * p; | |
2320 | unsigned hash; | |
2321 | ||
76b3903d GV |
2322 | /* Get the truly canonical filename, if it exists. (Note: this |
2323 | doesn't resolve aliasing due to subst commands, or recognise hard | |
2324 | links. */ | |
2325 | if (!w32_get_long_filename ((char *)name, fullname, MAX_PATH)) | |
2326 | abort (); | |
2327 | ||
2328 | parse_root (fullname, &p); | |
fbd6baed | 2329 | /* Normal W32 filesystems are still case insensitive. */ |
480b0c5b | 2330 | _strlwr (p); |
76b3903d | 2331 | return hashval (p); |
480b0c5b GV |
2332 | } |
2333 | ||
76b3903d GV |
2334 | #endif |
2335 | ||
480b0c5b GV |
2336 | /* MSVC stat function can't cope with UNC names and has other bugs, so |
2337 | replace it with our own. This also allows us to calculate consistent | |
2338 | inode values without hacks in the main Emacs code. */ | |
2339 | int | |
2340 | stat (const char * path, struct stat * buf) | |
2341 | { | |
eb9ea53f | 2342 | char *name, *r; |
480b0c5b GV |
2343 | WIN32_FIND_DATA wfd; |
2344 | HANDLE fh; | |
76b3903d | 2345 | DWORD fake_inode; |
480b0c5b GV |
2346 | int permission; |
2347 | int len; | |
2348 | int rootdir = FALSE; | |
2349 | ||
2350 | if (path == NULL || buf == NULL) | |
2351 | { | |
2352 | errno = EFAULT; | |
2353 | return -1; | |
2354 | } | |
2355 | ||
fbd6baed | 2356 | name = (char *) map_w32_filename (path, &path); |
9ab8560d | 2357 | /* must be valid filename, no wild cards or other invalid characters */ |
bb1584c8 | 2358 | if (strpbrk (name, "*?|<>\"")) |
480b0c5b GV |
2359 | { |
2360 | errno = ENOENT; | |
2361 | return -1; | |
2362 | } | |
2363 | ||
eb9ea53f GV |
2364 | /* If name is "c:/.." or "/.." then stat "c:/" or "/". */ |
2365 | r = IS_DEVICE_SEP (name[1]) ? &name[2] : name; | |
2366 | if (IS_DIRECTORY_SEP (r[0]) && r[1] == '.' && r[2] == '.' && r[3] == '\0') | |
2367 | { | |
2368 | r[1] = r[2] = '\0'; | |
2369 | } | |
2370 | ||
480b0c5b GV |
2371 | /* Remove trailing directory separator, unless name is the root |
2372 | directory of a drive or UNC volume in which case ensure there | |
2373 | is a trailing separator. */ | |
2374 | len = strlen (name); | |
2375 | rootdir = (path >= name + len - 1 | |
2376 | && (IS_DIRECTORY_SEP (*path) || *path == 0)); | |
2377 | name = strcpy (alloca (len + 2), name); | |
2378 | ||
9d3355d1 GV |
2379 | if (is_unc_volume (name)) |
2380 | { | |
2381 | DWORD attrs = unc_volume_file_attributes (name); | |
2382 | ||
2383 | if (attrs == -1) | |
2384 | return -1; | |
2385 | ||
2386 | memset (&wfd, 0, sizeof (wfd)); | |
2387 | wfd.dwFileAttributes = attrs; | |
2388 | wfd.ftCreationTime = utc_base_ft; | |
2389 | wfd.ftLastAccessTime = utc_base_ft; | |
2390 | wfd.ftLastWriteTime = utc_base_ft; | |
2391 | strcpy (wfd.cFileName, name); | |
2392 | } | |
2393 | else if (rootdir) | |
480b0c5b GV |
2394 | { |
2395 | if (!IS_DIRECTORY_SEP (name[len-1])) | |
2396 | strcat (name, "\\"); | |
2397 | if (GetDriveType (name) < 2) | |
2398 | { | |
2399 | errno = ENOENT; | |
2400 | return -1; | |
2401 | } | |
2402 | memset (&wfd, 0, sizeof (wfd)); | |
2403 | wfd.dwFileAttributes = FILE_ATTRIBUTE_DIRECTORY; | |
2404 | wfd.ftCreationTime = utc_base_ft; | |
2405 | wfd.ftLastAccessTime = utc_base_ft; | |
2406 | wfd.ftLastWriteTime = utc_base_ft; | |
2407 | strcpy (wfd.cFileName, name); | |
2408 | } | |
2409 | else | |
2410 | { | |
2411 | if (IS_DIRECTORY_SEP (name[len-1])) | |
2412 | name[len - 1] = 0; | |
76b3903d GV |
2413 | |
2414 | /* (This is hacky, but helps when doing file completions on | |
2415 | network drives.) Optimize by using information available from | |
2416 | active readdir if possible. */ | |
b19cc00c GV |
2417 | len = strlen (dir_pathname); |
2418 | if (IS_DIRECTORY_SEP (dir_pathname[len-1])) | |
2419 | len--; | |
76b3903d | 2420 | if (dir_find_handle != INVALID_HANDLE_VALUE |
b19cc00c | 2421 | && strnicmp (name, dir_pathname, len) == 0 |
76b3903d GV |
2422 | && IS_DIRECTORY_SEP (name[len]) |
2423 | && stricmp (name + len + 1, dir_static.d_name) == 0) | |
480b0c5b | 2424 | { |
76b3903d GV |
2425 | /* This was the last entry returned by readdir. */ |
2426 | wfd = dir_find_data; | |
2427 | } | |
2428 | else | |
2429 | { | |
2430 | fh = FindFirstFile (name, &wfd); | |
2431 | if (fh == INVALID_HANDLE_VALUE) | |
2432 | { | |
2433 | errno = ENOENT; | |
2434 | return -1; | |
2435 | } | |
2436 | FindClose (fh); | |
480b0c5b | 2437 | } |
480b0c5b GV |
2438 | } |
2439 | ||
93e0f0da JR |
2440 | if (!NILP (Vw32_get_true_file_attributes) |
2441 | /* No access rights required to get info. */ | |
2442 | && (fh = CreateFile (name, 0, 0, NULL, OPEN_EXISTING, | |
2443 | FILE_FLAG_BACKUP_SEMANTICS, NULL)) | |
2444 | != INVALID_HANDLE_VALUE) | |
480b0c5b | 2445 | { |
480b0c5b GV |
2446 | /* This is more accurate in terms of gettting the correct number |
2447 | of links, but is quite slow (it is noticable when Emacs is | |
2448 | making a list of file name completions). */ | |
2449 | BY_HANDLE_FILE_INFORMATION info; | |
2450 | ||
480b0c5b GV |
2451 | if (GetFileInformationByHandle (fh, &info)) |
2452 | { | |
480b0c5b | 2453 | buf->st_nlink = info.nNumberOfLinks; |
76b3903d GV |
2454 | /* Might as well use file index to fake inode values, but this |
2455 | is not guaranteed to be unique unless we keep a handle open | |
2456 | all the time (even then there are situations where it is | |
2457 | not unique). Reputedly, there are at most 48 bits of info | |
2458 | (on NTFS, presumably less on FAT). */ | |
2459 | fake_inode = info.nFileIndexLow ^ info.nFileIndexHigh; | |
480b0c5b GV |
2460 | } |
2461 | else | |
2462 | { | |
01f31dfb AI |
2463 | buf->st_nlink = 1; |
2464 | fake_inode = 0; | |
2465 | } | |
2466 | ||
93e0f0da | 2467 | if (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) |
01f31dfb | 2468 | { |
93e0f0da JR |
2469 | buf->st_mode = _S_IFDIR; |
2470 | } | |
2471 | else | |
2472 | { | |
2473 | switch (GetFileType (fh)) | |
2474 | { | |
2475 | case FILE_TYPE_DISK: | |
2476 | buf->st_mode = _S_IFREG; | |
2477 | break; | |
2478 | case FILE_TYPE_PIPE: | |
2479 | buf->st_mode = _S_IFIFO; | |
2480 | break; | |
2481 | case FILE_TYPE_CHAR: | |
2482 | case FILE_TYPE_UNKNOWN: | |
2483 | default: | |
2484 | buf->st_mode = _S_IFCHR; | |
2485 | } | |
480b0c5b | 2486 | } |
01f31dfb | 2487 | CloseHandle (fh); |
76b3903d GV |
2488 | } |
2489 | else | |
2490 | { | |
2491 | /* Don't bother to make this information more accurate. */ | |
93e0f0da | 2492 | buf->st_mode = (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) ? |
bc5fdfc7 | 2493 | _S_IFDIR : _S_IFREG; |
480b0c5b | 2494 | buf->st_nlink = 1; |
76b3903d GV |
2495 | fake_inode = 0; |
2496 | } | |
2497 | ||
2498 | #if 0 | |
2499 | /* Not sure if there is any point in this. */ | |
2500 | if (!NILP (Vw32_generate_fake_inodes)) | |
2501 | fake_inode = generate_inode_val (name); | |
2502 | else if (fake_inode == 0) | |
2503 | { | |
2504 | /* For want of something better, try to make everything unique. */ | |
2505 | static DWORD gen_num = 0; | |
2506 | fake_inode = ++gen_num; | |
480b0c5b | 2507 | } |
76b3903d GV |
2508 | #endif |
2509 | ||
2510 | /* MSVC defines _ino_t to be short; other libc's might not. */ | |
2511 | if (sizeof (buf->st_ino) == 2) | |
2512 | buf->st_ino = fake_inode ^ (fake_inode >> 16); | |
2513 | else | |
2514 | buf->st_ino = fake_inode; | |
480b0c5b GV |
2515 | |
2516 | /* consider files to belong to current user */ | |
2517 | buf->st_uid = the_passwd.pw_uid; | |
2518 | buf->st_gid = the_passwd.pw_gid; | |
2519 | ||
fbd6baed | 2520 | /* volume_info is set indirectly by map_w32_filename */ |
480b0c5b GV |
2521 | buf->st_dev = volume_info.serialnum; |
2522 | buf->st_rdev = volume_info.serialnum; | |
2523 | ||
480b0c5b GV |
2524 | |
2525 | buf->st_size = wfd.nFileSizeLow; | |
2526 | ||
2527 | /* Convert timestamps to Unix format. */ | |
2528 | buf->st_mtime = convert_time (wfd.ftLastWriteTime); | |
2529 | buf->st_atime = convert_time (wfd.ftLastAccessTime); | |
2530 | if (buf->st_atime == 0) buf->st_atime = buf->st_mtime; | |
2531 | buf->st_ctime = convert_time (wfd.ftCreationTime); | |
2532 | if (buf->st_ctime == 0) buf->st_ctime = buf->st_mtime; | |
2533 | ||
2534 | /* determine rwx permissions */ | |
2535 | if (wfd.dwFileAttributes & FILE_ATTRIBUTE_READONLY) | |
2536 | permission = _S_IREAD; | |
2537 | else | |
2538 | permission = _S_IREAD | _S_IWRITE; | |
177c0ea7 | 2539 | |
480b0c5b GV |
2540 | if (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) |
2541 | permission |= _S_IEXEC; | |
b3308d2e KH |
2542 | else if (is_exec (name)) |
2543 | permission |= _S_IEXEC; | |
480b0c5b GV |
2544 | |
2545 | buf->st_mode |= permission | (permission >> 3) | (permission >> 6); | |
2546 | ||
2547 | return 0; | |
2548 | } | |
2549 | ||
16bb7578 GV |
2550 | /* Provide fstat and utime as well as stat for consistent handling of |
2551 | file timestamps. */ | |
2552 | int | |
2553 | fstat (int desc, struct stat * buf) | |
2554 | { | |
2555 | HANDLE fh = (HANDLE) _get_osfhandle (desc); | |
2556 | BY_HANDLE_FILE_INFORMATION info; | |
2557 | DWORD fake_inode; | |
2558 | int permission; | |
2559 | ||
2560 | switch (GetFileType (fh) & ~FILE_TYPE_REMOTE) | |
2561 | { | |
2562 | case FILE_TYPE_DISK: | |
2563 | buf->st_mode = _S_IFREG; | |
2564 | if (!GetFileInformationByHandle (fh, &info)) | |
2565 | { | |
2566 | errno = EACCES; | |
2567 | return -1; | |
2568 | } | |
2569 | break; | |
2570 | case FILE_TYPE_PIPE: | |
2571 | buf->st_mode = _S_IFIFO; | |
2572 | goto non_disk; | |
2573 | case FILE_TYPE_CHAR: | |
2574 | case FILE_TYPE_UNKNOWN: | |
2575 | default: | |
2576 | buf->st_mode = _S_IFCHR; | |
2577 | non_disk: | |
2578 | memset (&info, 0, sizeof (info)); | |
2579 | info.dwFileAttributes = 0; | |
2580 | info.ftCreationTime = utc_base_ft; | |
2581 | info.ftLastAccessTime = utc_base_ft; | |
2582 | info.ftLastWriteTime = utc_base_ft; | |
2583 | } | |
2584 | ||
2585 | if (info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) | |
16bb7578 | 2586 | buf->st_mode = _S_IFDIR; |
93e0f0da JR |
2587 | |
2588 | buf->st_nlink = info.nNumberOfLinks; | |
2589 | /* Might as well use file index to fake inode values, but this | |
2590 | is not guaranteed to be unique unless we keep a handle open | |
2591 | all the time (even then there are situations where it is | |
2592 | not unique). Reputedly, there are at most 48 bits of info | |
2593 | (on NTFS, presumably less on FAT). */ | |
2594 | fake_inode = info.nFileIndexLow ^ info.nFileIndexHigh; | |
16bb7578 GV |
2595 | |
2596 | /* MSVC defines _ino_t to be short; other libc's might not. */ | |
2597 | if (sizeof (buf->st_ino) == 2) | |
2598 | buf->st_ino = fake_inode ^ (fake_inode >> 16); | |
2599 | else | |
2600 | buf->st_ino = fake_inode; | |
2601 | ||
2602 | /* consider files to belong to current user */ | |
2603 | buf->st_uid = 0; | |
2604 | buf->st_gid = 0; | |
2605 | ||
2606 | buf->st_dev = info.dwVolumeSerialNumber; | |
2607 | buf->st_rdev = info.dwVolumeSerialNumber; | |
2608 | ||
2609 | buf->st_size = info.nFileSizeLow; | |
2610 | ||
2611 | /* Convert timestamps to Unix format. */ | |
2612 | buf->st_mtime = convert_time (info.ftLastWriteTime); | |
2613 | buf->st_atime = convert_time (info.ftLastAccessTime); | |
2614 | if (buf->st_atime == 0) buf->st_atime = buf->st_mtime; | |
2615 | buf->st_ctime = convert_time (info.ftCreationTime); | |
2616 | if (buf->st_ctime == 0) buf->st_ctime = buf->st_mtime; | |
2617 | ||
2618 | /* determine rwx permissions */ | |
2619 | if (info.dwFileAttributes & FILE_ATTRIBUTE_READONLY) | |
2620 | permission = _S_IREAD; | |
2621 | else | |
2622 | permission = _S_IREAD | _S_IWRITE; | |
177c0ea7 | 2623 | |
16bb7578 GV |
2624 | if (info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) |
2625 | permission |= _S_IEXEC; | |
2626 | else | |
2627 | { | |
2628 | #if 0 /* no way of knowing the filename */ | |
2629 | char * p = strrchr (name, '.'); | |
2630 | if (p != NULL && | |
2631 | (stricmp (p, ".exe") == 0 || | |
2632 | stricmp (p, ".com") == 0 || | |
2633 | stricmp (p, ".bat") == 0 || | |
2634 | stricmp (p, ".cmd") == 0)) | |
2635 | permission |= _S_IEXEC; | |
2636 | #endif | |
2637 | } | |
2638 | ||
2639 | buf->st_mode |= permission | (permission >> 3) | (permission >> 6); | |
2640 | ||
2641 | return 0; | |
2642 | } | |
2643 | ||
2644 | int | |
2645 | utime (const char *name, struct utimbuf *times) | |
2646 | { | |
2647 | struct utimbuf deftime; | |
2648 | HANDLE fh; | |
2649 | FILETIME mtime; | |
2650 | FILETIME atime; | |
2651 | ||
2652 | if (times == NULL) | |
2653 | { | |
2654 | deftime.modtime = deftime.actime = time (NULL); | |
2655 | times = &deftime; | |
2656 | } | |
2657 | ||
2658 | /* Need write access to set times. */ | |
2659 | fh = CreateFile (name, GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, | |
2660 | 0, OPEN_EXISTING, 0, NULL); | |
2661 | if (fh) | |
2662 | { | |
2663 | convert_from_time_t (times->actime, &atime); | |
2664 | convert_from_time_t (times->modtime, &mtime); | |
2665 | if (!SetFileTime (fh, NULL, &atime, &mtime)) | |
2666 | { | |
2667 | CloseHandle (fh); | |
2668 | errno = EACCES; | |
2669 | return -1; | |
2670 | } | |
2671 | CloseHandle (fh); | |
2672 | } | |
2673 | else | |
2674 | { | |
2675 | errno = EINVAL; | |
2676 | return -1; | |
2677 | } | |
2678 | return 0; | |
2679 | } | |
2680 | ||
480b0c5b GV |
2681 | #ifdef HAVE_SOCKETS |
2682 | ||
2683 | /* Wrappers for winsock functions to map between our file descriptors | |
2684 | and winsock's handles; also set h_errno for convenience. | |
2685 | ||
2686 | To allow Emacs to run on systems which don't have winsock support | |
2687 | installed, we dynamically link to winsock on startup if present, and | |
2688 | otherwise provide the minimum necessary functionality | |
2689 | (eg. gethostname). */ | |
2690 | ||
2691 | /* function pointers for relevant socket functions */ | |
2692 | int (PASCAL *pfn_WSAStartup) (WORD wVersionRequired, LPWSADATA lpWSAData); | |
2693 | void (PASCAL *pfn_WSASetLastError) (int iError); | |
2694 | int (PASCAL *pfn_WSAGetLastError) (void); | |
2695 | int (PASCAL *pfn_socket) (int af, int type, int protocol); | |
2696 | int (PASCAL *pfn_bind) (SOCKET s, const struct sockaddr *addr, int namelen); | |
2697 | int (PASCAL *pfn_connect) (SOCKET s, const struct sockaddr *addr, int namelen); | |
2698 | int (PASCAL *pfn_ioctlsocket) (SOCKET s, long cmd, u_long *argp); | |
2699 | int (PASCAL *pfn_recv) (SOCKET s, char * buf, int len, int flags); | |
2700 | int (PASCAL *pfn_send) (SOCKET s, const char * buf, int len, int flags); | |
2701 | int (PASCAL *pfn_closesocket) (SOCKET s); | |
2702 | int (PASCAL *pfn_shutdown) (SOCKET s, int how); | |
2703 | int (PASCAL *pfn_WSACleanup) (void); | |
2704 | ||
2705 | u_short (PASCAL *pfn_htons) (u_short hostshort); | |
2706 | u_short (PASCAL *pfn_ntohs) (u_short netshort); | |
2707 | unsigned long (PASCAL *pfn_inet_addr) (const char * cp); | |
2708 | int (PASCAL *pfn_gethostname) (char * name, int namelen); | |
2709 | struct hostent * (PASCAL *pfn_gethostbyname) (const char * name); | |
2710 | struct servent * (PASCAL *pfn_getservbyname) (const char * name, const char * proto); | |
ecd270eb | 2711 | int (PASCAL *pfn_getpeername) (SOCKET s, struct sockaddr *addr, int * namelen); |
962955c5 JR |
2712 | int (PASCAL *pfn_setsockopt) (SOCKET s, int level, int optname, |
2713 | const char * optval, int optlen); | |
2714 | int (PASCAL *pfn_listen) (SOCKET s, int backlog); | |
2715 | int (PASCAL *pfn_getsockname) (SOCKET s, struct sockaddr * name, | |
2716 | int * namelen); | |
2717 | SOCKET (PASCAL *pfn_accept) (SOCKET s, struct sockaddr * addr, int * addrlen); | |
2718 | int (PASCAL *pfn_recvfrom) (SOCKET s, char * buf, int len, int flags, | |
2719 | struct sockaddr * from, int * fromlen); | |
2720 | int (PASCAL *pfn_sendto) (SOCKET s, const char * buf, int len, int flags, | |
2721 | const struct sockaddr * to, int tolen); | |
2722 | ||
f1614061 RS |
2723 | /* SetHandleInformation is only needed to make sockets non-inheritable. */ |
2724 | BOOL (WINAPI *pfn_SetHandleInformation) (HANDLE object, DWORD mask, DWORD flags); | |
2725 | #ifndef HANDLE_FLAG_INHERIT | |
2726 | #define HANDLE_FLAG_INHERIT 1 | |
2727 | #endif | |
480b0c5b | 2728 | |
f249a012 RS |
2729 | HANDLE winsock_lib; |
2730 | static int winsock_inuse; | |
480b0c5b | 2731 | |
f249a012 | 2732 | BOOL |
480b0c5b GV |
2733 | term_winsock (void) |
2734 | { | |
f249a012 | 2735 | if (winsock_lib != NULL && winsock_inuse == 0) |
480b0c5b | 2736 | { |
f249a012 RS |
2737 | /* Not sure what would cause WSAENETDOWN, or even if it can happen |
2738 | after WSAStartup returns successfully, but it seems reasonable | |
2739 | to allow unloading winsock anyway in that case. */ | |
2740 | if (pfn_WSACleanup () == 0 || | |
2741 | pfn_WSAGetLastError () == WSAENETDOWN) | |
2742 | { | |
2743 | if (FreeLibrary (winsock_lib)) | |
2744 | winsock_lib = NULL; | |
2745 | return TRUE; | |
2746 | } | |
480b0c5b | 2747 | } |
f249a012 | 2748 | return FALSE; |
480b0c5b GV |
2749 | } |
2750 | ||
f249a012 RS |
2751 | BOOL |
2752 | init_winsock (int load_now) | |
480b0c5b GV |
2753 | { |
2754 | WSADATA winsockData; | |
2755 | ||
f249a012 RS |
2756 | if (winsock_lib != NULL) |
2757 | return TRUE; | |
f1614061 RS |
2758 | |
2759 | pfn_SetHandleInformation = NULL; | |
2760 | pfn_SetHandleInformation | |
2761 | = (void *) GetProcAddress (GetModuleHandle ("kernel32.dll"), | |
2762 | "SetHandleInformation"); | |
2763 | ||
480b0c5b GV |
2764 | winsock_lib = LoadLibrary ("wsock32.dll"); |
2765 | ||
2766 | if (winsock_lib != NULL) | |
2767 | { | |
2768 | /* dynamically link to socket functions */ | |
2769 | ||
2770 | #define LOAD_PROC(fn) \ | |
2771 | if ((pfn_##fn = (void *) GetProcAddress (winsock_lib, #fn)) == NULL) \ | |
2772 | goto fail; | |
2773 | ||
2774 | LOAD_PROC( WSAStartup ); | |
2775 | LOAD_PROC( WSASetLastError ); | |
2776 | LOAD_PROC( WSAGetLastError ); | |
2777 | LOAD_PROC( socket ); | |
2778 | LOAD_PROC( bind ); | |
2779 | LOAD_PROC( connect ); | |
2780 | LOAD_PROC( ioctlsocket ); | |
2781 | LOAD_PROC( recv ); | |
2782 | LOAD_PROC( send ); | |
2783 | LOAD_PROC( closesocket ); | |
2784 | LOAD_PROC( shutdown ); | |
2785 | LOAD_PROC( htons ); | |
2786 | LOAD_PROC( ntohs ); | |
2787 | LOAD_PROC( inet_addr ); | |
2788 | LOAD_PROC( gethostname ); | |
2789 | LOAD_PROC( gethostbyname ); | |
2790 | LOAD_PROC( getservbyname ); | |
ecd270eb | 2791 | LOAD_PROC( getpeername ); |
480b0c5b | 2792 | LOAD_PROC( WSACleanup ); |
962955c5 JR |
2793 | LOAD_PROC( setsockopt ); |
2794 | LOAD_PROC( listen ); | |
2795 | LOAD_PROC( getsockname ); | |
2796 | LOAD_PROC( accept ); | |
2797 | LOAD_PROC( recvfrom ); | |
2798 | LOAD_PROC( sendto ); | |
f249a012 RS |
2799 | #undef LOAD_PROC |
2800 | ||
480b0c5b GV |
2801 | /* specify version 1.1 of winsock */ |
2802 | if (pfn_WSAStartup (0x101, &winsockData) == 0) | |
2803 | { | |
f249a012 RS |
2804 | if (winsockData.wVersion != 0x101) |
2805 | goto fail; | |
2806 | ||
2807 | if (!load_now) | |
2808 | { | |
2809 | /* Report that winsock exists and is usable, but leave | |
2810 | socket functions disabled. I am assuming that calling | |
2811 | WSAStartup does not require any network interaction, | |
2812 | and in particular does not cause or require a dial-up | |
2813 | connection to be established. */ | |
2814 | ||
2815 | pfn_WSACleanup (); | |
2816 | FreeLibrary (winsock_lib); | |
2817 | winsock_lib = NULL; | |
2818 | } | |
2819 | winsock_inuse = 0; | |
2820 | return TRUE; | |
480b0c5b GV |
2821 | } |
2822 | ||
2823 | fail: | |
2824 | FreeLibrary (winsock_lib); | |
f249a012 | 2825 | winsock_lib = NULL; |
480b0c5b | 2826 | } |
f249a012 RS |
2827 | |
2828 | return FALSE; | |
480b0c5b GV |
2829 | } |
2830 | ||
2831 | ||
2832 | int h_errno = 0; | |
2833 | ||
2834 | /* function to set h_errno for compatability; map winsock error codes to | |
2835 | normal system codes where they overlap (non-overlapping definitions | |
2836 | are already in <sys/socket.h> */ | |
2837 | static void set_errno () | |
2838 | { | |
f249a012 | 2839 | if (winsock_lib == NULL) |
480b0c5b GV |
2840 | h_errno = EINVAL; |
2841 | else | |
2842 | h_errno = pfn_WSAGetLastError (); | |
2843 | ||
2844 | switch (h_errno) | |
2845 | { | |
2846 | case WSAEACCES: h_errno = EACCES; break; | |
2847 | case WSAEBADF: h_errno = EBADF; break; | |
2848 | case WSAEFAULT: h_errno = EFAULT; break; | |
2849 | case WSAEINTR: h_errno = EINTR; break; | |
2850 | case WSAEINVAL: h_errno = EINVAL; break; | |
2851 | case WSAEMFILE: h_errno = EMFILE; break; | |
2852 | case WSAENAMETOOLONG: h_errno = ENAMETOOLONG; break; | |
2853 | case WSAENOTEMPTY: h_errno = ENOTEMPTY; break; | |
2854 | } | |
2855 | errno = h_errno; | |
2856 | } | |
2857 | ||
2858 | static void check_errno () | |
2859 | { | |
f249a012 | 2860 | if (h_errno == 0 && winsock_lib != NULL) |
480b0c5b GV |
2861 | pfn_WSASetLastError (0); |
2862 | } | |
2863 | ||
d8fcc1b9 AI |
2864 | /* Extend strerror to handle the winsock-specific error codes. */ |
2865 | struct { | |
2866 | int errnum; | |
2867 | char * msg; | |
2868 | } _wsa_errlist[] = { | |
2869 | WSAEINTR , "Interrupted function call", | |
2870 | WSAEBADF , "Bad file descriptor", | |
2871 | WSAEACCES , "Permission denied", | |
2872 | WSAEFAULT , "Bad address", | |
2873 | WSAEINVAL , "Invalid argument", | |
2874 | WSAEMFILE , "Too many open files", | |
177c0ea7 | 2875 | |
d8fcc1b9 AI |
2876 | WSAEWOULDBLOCK , "Resource temporarily unavailable", |
2877 | WSAEINPROGRESS , "Operation now in progress", | |
2878 | WSAEALREADY , "Operation already in progress", | |
2879 | WSAENOTSOCK , "Socket operation on non-socket", | |
2880 | WSAEDESTADDRREQ , "Destination address required", | |
2881 | WSAEMSGSIZE , "Message too long", | |
2882 | WSAEPROTOTYPE , "Protocol wrong type for socket", | |
2883 | WSAENOPROTOOPT , "Bad protocol option", | |
2884 | WSAEPROTONOSUPPORT , "Protocol not supported", | |
2885 | WSAESOCKTNOSUPPORT , "Socket type not supported", | |
2886 | WSAEOPNOTSUPP , "Operation not supported", | |
2887 | WSAEPFNOSUPPORT , "Protocol family not supported", | |
2888 | WSAEAFNOSUPPORT , "Address family not supported by protocol family", | |
2889 | WSAEADDRINUSE , "Address already in use", | |
2890 | WSAEADDRNOTAVAIL , "Cannot assign requested address", | |
2891 | WSAENETDOWN , "Network is down", | |
2892 | WSAENETUNREACH , "Network is unreachable", | |
2893 | WSAENETRESET , "Network dropped connection on reset", | |
2894 | WSAECONNABORTED , "Software caused connection abort", | |
2895 | WSAECONNRESET , "Connection reset by peer", | |
2896 | WSAENOBUFS , "No buffer space available", | |
2897 | WSAEISCONN , "Socket is already connected", | |
2898 | WSAENOTCONN , "Socket is not connected", | |
2899 | WSAESHUTDOWN , "Cannot send after socket shutdown", | |
2900 | WSAETOOMANYREFS , "Too many references", /* not sure */ | |
2901 | WSAETIMEDOUT , "Connection timed out", | |
2902 | WSAECONNREFUSED , "Connection refused", | |
2903 | WSAELOOP , "Network loop", /* not sure */ | |
2904 | WSAENAMETOOLONG , "Name is too long", | |
2905 | WSAEHOSTDOWN , "Host is down", | |
2906 | WSAEHOSTUNREACH , "No route to host", | |
2907 | WSAENOTEMPTY , "Buffer not empty", /* not sure */ | |
2908 | WSAEPROCLIM , "Too many processes", | |
2909 | WSAEUSERS , "Too many users", /* not sure */ | |
2910 | WSAEDQUOT , "Double quote in host name", /* really not sure */ | |
2911 | WSAESTALE , "Data is stale", /* not sure */ | |
2912 | WSAEREMOTE , "Remote error", /* not sure */ | |
177c0ea7 | 2913 | |
d8fcc1b9 AI |
2914 | WSASYSNOTREADY , "Network subsystem is unavailable", |
2915 | WSAVERNOTSUPPORTED , "WINSOCK.DLL version out of range", | |
2916 | WSANOTINITIALISED , "Winsock not initialized successfully", | |
2917 | WSAEDISCON , "Graceful shutdown in progress", | |
2918 | #ifdef WSAENOMORE | |
2919 | WSAENOMORE , "No more operations allowed", /* not sure */ | |
2920 | WSAECANCELLED , "Operation cancelled", /* not sure */ | |
2921 | WSAEINVALIDPROCTABLE , "Invalid procedure table from service provider", | |
2922 | WSAEINVALIDPROVIDER , "Invalid service provider version number", | |
2923 | WSAEPROVIDERFAILEDINIT , "Unable to initialize a service provider", | |
2924 | WSASYSCALLFAILURE , "System call failured", | |
2925 | WSASERVICE_NOT_FOUND , "Service not found", /* not sure */ | |
2926 | WSATYPE_NOT_FOUND , "Class type not found", | |
2927 | WSA_E_NO_MORE , "No more resources available", /* really not sure */ | |
2928 | WSA_E_CANCELLED , "Operation already cancelled", /* really not sure */ | |
2929 | WSAEREFUSED , "Operation refused", /* not sure */ | |
2930 | #endif | |
177c0ea7 | 2931 | |
d8fcc1b9 AI |
2932 | WSAHOST_NOT_FOUND , "Host not found", |
2933 | WSATRY_AGAIN , "Authoritative host not found during name lookup", | |
2934 | WSANO_RECOVERY , "Non-recoverable error during name lookup", | |
2935 | WSANO_DATA , "Valid name, no data record of requested type", | |
2936 | ||
2937 | -1, NULL | |
2938 | }; | |
2939 | ||
2940 | char * | |
2941 | sys_strerror(int error_no) | |
2942 | { | |
2943 | int i; | |
2944 | static char unknown_msg[40]; | |
2945 | ||
a302c7ae AI |
2946 | if (error_no >= 0 && error_no < sys_nerr) |
2947 | return sys_errlist[error_no]; | |
d8fcc1b9 AI |
2948 | |
2949 | for (i = 0; _wsa_errlist[i].errnum >= 0; i++) | |
2950 | if (_wsa_errlist[i].errnum == error_no) | |
2951 | return _wsa_errlist[i].msg; | |
2952 | ||
2953 | sprintf(unknown_msg, "Unidentified error: %d", error_no); | |
2954 | return unknown_msg; | |
2955 | } | |
2956 | ||
480b0c5b GV |
2957 | /* [andrewi 3-May-96] I've had conflicting results using both methods, |
2958 | but I believe the method of keeping the socket handle separate (and | |
2959 | insuring it is not inheritable) is the correct one. */ | |
2960 | ||
2961 | //#define SOCK_REPLACE_HANDLE | |
2962 | ||
2963 | #ifdef SOCK_REPLACE_HANDLE | |
2964 | #define SOCK_HANDLE(fd) ((SOCKET) _get_osfhandle (fd)) | |
2965 | #else | |
2966 | #define SOCK_HANDLE(fd) ((SOCKET) fd_info[fd].hnd) | |
2967 | #endif | |
2968 | ||
962955c5 JR |
2969 | int socket_to_fd (SOCKET s); |
2970 | ||
480b0c5b GV |
2971 | int |
2972 | sys_socket(int af, int type, int protocol) | |
2973 | { | |
962955c5 | 2974 | SOCKET s; |
480b0c5b | 2975 | |
f249a012 | 2976 | if (winsock_lib == NULL) |
480b0c5b GV |
2977 | { |
2978 | h_errno = ENETDOWN; | |
2979 | return INVALID_SOCKET; | |
2980 | } | |
2981 | ||
2982 | check_errno (); | |
2983 | ||
2984 | /* call the real socket function */ | |
962955c5 | 2985 | s = pfn_socket (af, type, protocol); |
177c0ea7 | 2986 | |
480b0c5b | 2987 | if (s != INVALID_SOCKET) |
962955c5 | 2988 | return socket_to_fd (s); |
480b0c5b | 2989 | |
962955c5 JR |
2990 | set_errno (); |
2991 | return -1; | |
2992 | } | |
2993 | ||
2994 | /* Convert a SOCKET to a file descriptor. */ | |
2995 | int | |
2996 | socket_to_fd (SOCKET s) | |
2997 | { | |
2998 | int fd; | |
2999 | child_process * cp; | |
3000 | ||
3001 | /* Although under NT 3.5 _open_osfhandle will accept a socket | |
3002 | handle, if opened with SO_OPENTYPE == SO_SYNCHRONOUS_NONALERT, | |
3003 | that does not work under NT 3.1. However, we can get the same | |
3004 | effect by using a backdoor function to replace an existing | |
3005 | descriptor handle with the one we want. */ | |
3006 | ||
3007 | /* allocate a file descriptor (with appropriate flags) */ | |
3008 | fd = _open ("NUL:", _O_RDWR); | |
3009 | if (fd >= 0) | |
3010 | { | |
480b0c5b | 3011 | #ifdef SOCK_REPLACE_HANDLE |
962955c5 JR |
3012 | /* now replace handle to NUL with our socket handle */ |
3013 | CloseHandle ((HANDLE) _get_osfhandle (fd)); | |
3014 | _free_osfhnd (fd); | |
3015 | _set_osfhnd (fd, s); | |
3016 | /* setmode (fd, _O_BINARY); */ | |
480b0c5b | 3017 | #else |
962955c5 JR |
3018 | /* Make a non-inheritable copy of the socket handle. Note |
3019 | that it is possible that sockets aren't actually kernel | |
3020 | handles, which appears to be the case on Windows 9x when | |
3021 | the MS Proxy winsock client is installed. */ | |
3022 | { | |
3023 | /* Apparently there is a bug in NT 3.51 with some service | |
3024 | packs, which prevents using DuplicateHandle to make a | |
3025 | socket handle non-inheritable (causes WSACleanup to | |
3026 | hang). The work-around is to use SetHandleInformation | |
3027 | instead if it is available and implemented. */ | |
3028 | if (pfn_SetHandleInformation) | |
480b0c5b | 3029 | { |
962955c5 JR |
3030 | pfn_SetHandleInformation ((HANDLE) s, HANDLE_FLAG_INHERIT, 0); |
3031 | } | |
3032 | else | |
3033 | { | |
3034 | HANDLE parent = GetCurrentProcess (); | |
3035 | HANDLE new_s = INVALID_HANDLE_VALUE; | |
3036 | ||
3037 | if (DuplicateHandle (parent, | |
3038 | (HANDLE) s, | |
3039 | parent, | |
3040 | &new_s, | |
3041 | 0, | |
3042 | FALSE, | |
3043 | DUPLICATE_SAME_ACCESS)) | |
f1614061 | 3044 | { |
962955c5 JR |
3045 | /* It is possible that DuplicateHandle succeeds even |
3046 | though the socket wasn't really a kernel handle, | |
3047 | because a real handle has the same value. So | |
3048 | test whether the new handle really is a socket. */ | |
3049 | long nonblocking = 0; | |
3050 | if (pfn_ioctlsocket ((SOCKET) new_s, FIONBIO, &nonblocking) == 0) | |
ca149beb | 3051 | { |
962955c5 JR |
3052 | pfn_closesocket (s); |
3053 | s = (SOCKET) new_s; | |
3054 | } | |
3055 | else | |
3056 | { | |
3057 | CloseHandle (new_s); | |
3058 | } | |
177c0ea7 | 3059 | } |
480b0c5b | 3060 | } |
962955c5 JR |
3061 | } |
3062 | fd_info[fd].hnd = (HANDLE) s; | |
480b0c5b GV |
3063 | #endif |
3064 | ||
962955c5 JR |
3065 | /* set our own internal flags */ |
3066 | fd_info[fd].flags = FILE_SOCKET | FILE_BINARY | FILE_READ | FILE_WRITE; | |
480b0c5b | 3067 | |
962955c5 JR |
3068 | cp = new_child (); |
3069 | if (cp) | |
3070 | { | |
3071 | cp->fd = fd; | |
3072 | cp->status = STATUS_READ_ACKNOWLEDGED; | |
480b0c5b | 3073 | |
962955c5 JR |
3074 | /* attach child_process to fd_info */ |
3075 | if (fd_info[ fd ].cp != NULL) | |
3076 | { | |
3077 | DebPrint (("sys_socket: fd_info[%d] apparently in use!\n", fd)); | |
3078 | abort (); | |
480b0c5b GV |
3079 | } |
3080 | ||
962955c5 JR |
3081 | fd_info[ fd ].cp = cp; |
3082 | ||
3083 | /* success! */ | |
3084 | winsock_inuse++; /* count open sockets */ | |
3085 | return fd; | |
480b0c5b | 3086 | } |
480b0c5b | 3087 | |
962955c5 JR |
3088 | /* clean up */ |
3089 | _close (fd); | |
3090 | } | |
3091 | pfn_closesocket (s); | |
3092 | h_errno = EMFILE; | |
480b0c5b GV |
3093 | return -1; |
3094 | } | |
3095 | ||
3096 | ||
3097 | int | |
3098 | sys_bind (int s, const struct sockaddr * addr, int namelen) | |
3099 | { | |
f249a012 | 3100 | if (winsock_lib == NULL) |
480b0c5b GV |
3101 | { |
3102 | h_errno = ENOTSOCK; | |
3103 | return SOCKET_ERROR; | |
3104 | } | |
3105 | ||
3106 | check_errno (); | |
3107 | if (fd_info[s].flags & FILE_SOCKET) | |
3108 | { | |
3109 | int rc = pfn_bind (SOCK_HANDLE (s), addr, namelen); | |
3110 | if (rc == SOCKET_ERROR) | |
3111 | set_errno (); | |
3112 | return rc; | |
3113 | } | |
3114 | h_errno = ENOTSOCK; | |
3115 | return SOCKET_ERROR; | |
3116 | } | |
3117 | ||
3118 | ||
3119 | int | |
3120 | sys_connect (int s, const struct sockaddr * name, int namelen) | |
3121 | { | |
f249a012 | 3122 | if (winsock_lib == NULL) |
480b0c5b GV |
3123 | { |
3124 | h_errno = ENOTSOCK; | |
3125 | return SOCKET_ERROR; | |
3126 | } | |
3127 | ||
3128 | check_errno (); | |
3129 | if (fd_info[s].flags & FILE_SOCKET) | |
3130 | { | |
3131 | int rc = pfn_connect (SOCK_HANDLE (s), name, namelen); | |
3132 | if (rc == SOCKET_ERROR) | |
3133 | set_errno (); | |
3134 | return rc; | |
3135 | } | |
3136 | h_errno = ENOTSOCK; | |
3137 | return SOCKET_ERROR; | |
3138 | } | |
3139 | ||
3140 | u_short | |
3141 | sys_htons (u_short hostshort) | |
3142 | { | |
f249a012 | 3143 | return (winsock_lib != NULL) ? |
480b0c5b GV |
3144 | pfn_htons (hostshort) : hostshort; |
3145 | } | |
3146 | ||
3147 | u_short | |
3148 | sys_ntohs (u_short netshort) | |
3149 | { | |
f249a012 | 3150 | return (winsock_lib != NULL) ? |
480b0c5b GV |
3151 | pfn_ntohs (netshort) : netshort; |
3152 | } | |
3153 | ||
3154 | unsigned long | |
3155 | sys_inet_addr (const char * cp) | |
3156 | { | |
f249a012 | 3157 | return (winsock_lib != NULL) ? |
480b0c5b GV |
3158 | pfn_inet_addr (cp) : INADDR_NONE; |
3159 | } | |
3160 | ||
3161 | int | |
3162 | sys_gethostname (char * name, int namelen) | |
3163 | { | |
f249a012 | 3164 | if (winsock_lib != NULL) |
480b0c5b GV |
3165 | return pfn_gethostname (name, namelen); |
3166 | ||
3167 | if (namelen > MAX_COMPUTERNAME_LENGTH) | |
a302c7ae | 3168 | return !GetComputerName (name, (DWORD *)&namelen); |
480b0c5b GV |
3169 | |
3170 | h_errno = EFAULT; | |
3171 | return SOCKET_ERROR; | |
3172 | } | |
3173 | ||
3174 | struct hostent * | |
3175 | sys_gethostbyname(const char * name) | |
3176 | { | |
3177 | struct hostent * host; | |
3178 | ||
f249a012 | 3179 | if (winsock_lib == NULL) |
480b0c5b GV |
3180 | { |
3181 | h_errno = ENETDOWN; | |
3182 | return NULL; | |
3183 | } | |
3184 | ||
3185 | check_errno (); | |
3186 | host = pfn_gethostbyname (name); | |
3187 | if (!host) | |
3188 | set_errno (); | |
3189 | return host; | |
3190 | } | |
3191 | ||
3192 | struct servent * | |
3193 | sys_getservbyname(const char * name, const char * proto) | |
3194 | { | |
3195 | struct servent * serv; | |
3196 | ||
f249a012 | 3197 | if (winsock_lib == NULL) |
480b0c5b GV |
3198 | { |
3199 | h_errno = ENETDOWN; | |
3200 | return NULL; | |
3201 | } | |
3202 | ||
3203 | check_errno (); | |
3204 | serv = pfn_getservbyname (name, proto); | |
3205 | if (!serv) | |
3206 | set_errno (); | |
3207 | return serv; | |
3208 | } | |
3209 | ||
ecd270eb JR |
3210 | int |
3211 | sys_getpeername (int s, struct sockaddr *addr, int * namelen) | |
3212 | { | |
3213 | if (winsock_lib == NULL) | |
3214 | { | |
3215 | h_errno = ENETDOWN; | |
3216 | return SOCKET_ERROR; | |
3217 | } | |
3218 | ||
3219 | check_errno (); | |
3220 | if (fd_info[s].flags & FILE_SOCKET) | |
3221 | { | |
3222 | int rc = pfn_getpeername (SOCK_HANDLE (s), addr, namelen); | |
3223 | if (rc == SOCKET_ERROR) | |
3224 | set_errno (); | |
3225 | return rc; | |
3226 | } | |
3227 | h_errno = ENOTSOCK; | |
3228 | return SOCKET_ERROR; | |
3229 | } | |
3230 | ||
3231 | ||
380961a6 GV |
3232 | int |
3233 | sys_shutdown (int s, int how) | |
3234 | { | |
380961a6 GV |
3235 | if (winsock_lib == NULL) |
3236 | { | |
3237 | h_errno = ENETDOWN; | |
3238 | return SOCKET_ERROR; | |
3239 | } | |
3240 | ||
3241 | check_errno (); | |
3242 | if (fd_info[s].flags & FILE_SOCKET) | |
3243 | { | |
3244 | int rc = pfn_shutdown (SOCK_HANDLE (s), how); | |
962955c5 JR |
3245 | if (rc == SOCKET_ERROR) |
3246 | set_errno (); | |
3247 | return rc; | |
3248 | } | |
3249 | h_errno = ENOTSOCK; | |
3250 | return SOCKET_ERROR; | |
3251 | } | |
3252 | ||
3253 | int | |
a5a389bb | 3254 | sys_setsockopt (int s, int level, int optname, const void * optval, int optlen) |
962955c5 JR |
3255 | { |
3256 | if (winsock_lib == NULL) | |
3257 | { | |
3258 | h_errno = ENETDOWN; | |
3259 | return SOCKET_ERROR; | |
3260 | } | |
3261 | ||
3262 | check_errno (); | |
3263 | if (fd_info[s].flags & FILE_SOCKET) | |
3264 | { | |
3265 | int rc = pfn_setsockopt (SOCK_HANDLE (s), level, optname, | |
a5a389bb | 3266 | (const char *)optval, optlen); |
962955c5 JR |
3267 | if (rc == SOCKET_ERROR) |
3268 | set_errno (); | |
3269 | return rc; | |
3270 | } | |
3271 | h_errno = ENOTSOCK; | |
177c0ea7 | 3272 | return SOCKET_ERROR; |
962955c5 JR |
3273 | } |
3274 | ||
3275 | int | |
3276 | sys_listen (int s, int backlog) | |
3277 | { | |
3278 | if (winsock_lib == NULL) | |
3279 | { | |
3280 | h_errno = ENETDOWN; | |
3281 | return SOCKET_ERROR; | |
3282 | } | |
3283 | ||
3284 | check_errno (); | |
3285 | if (fd_info[s].flags & FILE_SOCKET) | |
3286 | { | |
3287 | int rc = pfn_listen (SOCK_HANDLE (s), backlog); | |
3288 | if (rc == SOCKET_ERROR) | |
3289 | set_errno (); | |
3290 | return rc; | |
3291 | } | |
3292 | h_errno = ENOTSOCK; | |
177c0ea7 | 3293 | return SOCKET_ERROR; |
962955c5 JR |
3294 | } |
3295 | ||
3296 | int | |
3297 | sys_getsockname (int s, struct sockaddr * name, int * namelen) | |
3298 | { | |
3299 | if (winsock_lib == NULL) | |
3300 | { | |
3301 | h_errno = ENETDOWN; | |
3302 | return SOCKET_ERROR; | |
3303 | } | |
3304 | ||
3305 | check_errno (); | |
3306 | if (fd_info[s].flags & FILE_SOCKET) | |
3307 | { | |
3308 | int rc = pfn_getsockname (SOCK_HANDLE (s), name, namelen); | |
3309 | if (rc == SOCKET_ERROR) | |
3310 | set_errno (); | |
3311 | return rc; | |
3312 | } | |
3313 | h_errno = ENOTSOCK; | |
177c0ea7 | 3314 | return SOCKET_ERROR; |
962955c5 JR |
3315 | } |
3316 | ||
3317 | int | |
3318 | sys_accept (int s, struct sockaddr * addr, int * addrlen) | |
3319 | { | |
3320 | if (winsock_lib == NULL) | |
3321 | { | |
3322 | h_errno = ENETDOWN; | |
3323 | return -1; | |
3324 | } | |
3325 | ||
3326 | check_errno (); | |
3327 | if (fd_info[s].flags & FILE_SOCKET) | |
3328 | { | |
a0ad1860 JB |
3329 | SOCKET t = pfn_accept (SOCK_HANDLE (s), addr, addrlen); |
3330 | if (t != INVALID_SOCKET) | |
3331 | return socket_to_fd (t); | |
962955c5 JR |
3332 | |
3333 | set_errno (); | |
3334 | return -1; | |
3335 | } | |
3336 | h_errno = ENOTSOCK; | |
3337 | return -1; | |
3338 | } | |
3339 | ||
3340 | int | |
3341 | sys_recvfrom (int s, char * buf, int len, int flags, | |
3342 | struct sockaddr * from, int * fromlen) | |
3343 | { | |
3344 | if (winsock_lib == NULL) | |
3345 | { | |
3346 | h_errno = ENETDOWN; | |
3347 | return SOCKET_ERROR; | |
3348 | } | |
3349 | ||
3350 | check_errno (); | |
3351 | if (fd_info[s].flags & FILE_SOCKET) | |
3352 | { | |
3353 | int rc = pfn_recvfrom (SOCK_HANDLE (s), buf, len, flags, from, fromlen); | |
3354 | if (rc == SOCKET_ERROR) | |
3355 | set_errno (); | |
3356 | return rc; | |
3357 | } | |
3358 | h_errno = ENOTSOCK; | |
3359 | return SOCKET_ERROR; | |
3360 | } | |
3361 | ||
3362 | int | |
3363 | sys_sendto (int s, const char * buf, int len, int flags, | |
3364 | const struct sockaddr * to, int tolen) | |
3365 | { | |
3366 | if (winsock_lib == NULL) | |
3367 | { | |
3368 | h_errno = ENETDOWN; | |
3369 | return SOCKET_ERROR; | |
3370 | } | |
3371 | ||
3372 | check_errno (); | |
3373 | if (fd_info[s].flags & FILE_SOCKET) | |
3374 | { | |
3375 | int rc = pfn_sendto (SOCK_HANDLE (s), buf, len, flags, to, tolen); | |
380961a6 GV |
3376 | if (rc == SOCKET_ERROR) |
3377 | set_errno (); | |
3378 | return rc; | |
3379 | } | |
3380 | h_errno = ENOTSOCK; | |
3381 | return SOCKET_ERROR; | |
3382 | } | |
3383 | ||
ecd270eb JR |
3384 | /* Windows does not have an fcntl function. Provide an implementation |
3385 | solely for making sockets non-blocking. */ | |
3386 | int | |
3387 | fcntl (int s, int cmd, int options) | |
3388 | { | |
3389 | if (winsock_lib == NULL) | |
3390 | { | |
3391 | h_errno = ENETDOWN; | |
3392 | return -1; | |
3393 | } | |
3394 | ||
3395 | check_errno (); | |
3396 | if (fd_info[s].flags & FILE_SOCKET) | |
3397 | { | |
3398 | if (cmd == F_SETFL && options == O_NDELAY) | |
3399 | { | |
3400 | unsigned long nblock = 1; | |
3401 | int rc = pfn_ioctlsocket (SOCK_HANDLE (s), FIONBIO, &nblock); | |
3402 | if (rc == SOCKET_ERROR) | |
3403 | set_errno(); | |
3404 | /* Keep track of the fact that we set this to non-blocking. */ | |
3405 | fd_info[s].flags |= FILE_NDELAY; | |
3406 | return rc; | |
3407 | } | |
3408 | else | |
3409 | { | |
3410 | h_errno = EINVAL; | |
3411 | return SOCKET_ERROR; | |
3412 | } | |
3413 | } | |
3414 | h_errno = ENOTSOCK; | |
3415 | return SOCKET_ERROR; | |
3416 | } | |
3417 | ||
480b0c5b GV |
3418 | #endif /* HAVE_SOCKETS */ |
3419 | ||
3420 | ||
3421 | /* Shadow main io functions: we need to handle pipes and sockets more | |
3422 | intelligently, and implement non-blocking mode as well. */ | |
3423 | ||
3424 | int | |
3425 | sys_close (int fd) | |
3426 | { | |
3427 | int rc; | |
3428 | ||
3429 | if (fd < 0 || fd >= MAXDESC) | |
3430 | { | |
3431 | errno = EBADF; | |
3432 | return -1; | |
3433 | } | |
3434 | ||
3435 | if (fd_info[fd].cp) | |
3436 | { | |
3437 | child_process * cp = fd_info[fd].cp; | |
3438 | ||
3439 | fd_info[fd].cp = NULL; | |
3440 | ||
3441 | if (CHILD_ACTIVE (cp)) | |
3442 | { | |
3443 | /* if last descriptor to active child_process then cleanup */ | |
3444 | int i; | |
3445 | for (i = 0; i < MAXDESC; i++) | |
3446 | { | |
3447 | if (i == fd) | |
3448 | continue; | |
3449 | if (fd_info[i].cp == cp) | |
3450 | break; | |
3451 | } | |
3452 | if (i == MAXDESC) | |
3453 | { | |
f249a012 | 3454 | #ifdef HAVE_SOCKETS |
480b0c5b GV |
3455 | if (fd_info[fd].flags & FILE_SOCKET) |
3456 | { | |
f249a012 RS |
3457 | #ifndef SOCK_REPLACE_HANDLE |
3458 | if (winsock_lib == NULL) abort (); | |
480b0c5b GV |
3459 | |
3460 | pfn_shutdown (SOCK_HANDLE (fd), 2); | |
3461 | rc = pfn_closesocket (SOCK_HANDLE (fd)); | |
f249a012 RS |
3462 | #endif |
3463 | winsock_inuse--; /* count open sockets */ | |
480b0c5b GV |
3464 | } |
3465 | #endif | |
3466 | delete_child (cp); | |
3467 | } | |
3468 | } | |
3469 | } | |
3470 | ||
3471 | /* Note that sockets do not need special treatment here (at least on | |
e9e23e23 | 3472 | NT and Windows 95 using the standard tcp/ip stacks) - it appears that |
480b0c5b GV |
3473 | closesocket is equivalent to CloseHandle, which is to be expected |
3474 | because socket handles are fully fledged kernel handles. */ | |
3475 | rc = _close (fd); | |
3476 | ||
3477 | if (rc == 0) | |
3478 | fd_info[fd].flags = 0; | |
3479 | ||
3480 | return rc; | |
3481 | } | |
3482 | ||
3483 | int | |
3484 | sys_dup (int fd) | |
3485 | { | |
3486 | int new_fd; | |
3487 | ||
3488 | new_fd = _dup (fd); | |
3489 | if (new_fd >= 0) | |
3490 | { | |
3491 | /* duplicate our internal info as well */ | |
3492 | fd_info[new_fd] = fd_info[fd]; | |
3493 | } | |
3494 | return new_fd; | |
3495 | } | |
3496 | ||
3497 | ||
3498 | int | |
3499 | sys_dup2 (int src, int dst) | |
3500 | { | |
3501 | int rc; | |
3502 | ||
3503 | if (dst < 0 || dst >= MAXDESC) | |
3504 | { | |
3505 | errno = EBADF; | |
3506 | return -1; | |
3507 | } | |
3508 | ||
3509 | /* make sure we close the destination first if it's a pipe or socket */ | |
3510 | if (src != dst && fd_info[dst].flags != 0) | |
3511 | sys_close (dst); | |
177c0ea7 | 3512 | |
480b0c5b GV |
3513 | rc = _dup2 (src, dst); |
3514 | if (rc == 0) | |
3515 | { | |
3516 | /* duplicate our internal info as well */ | |
3517 | fd_info[dst] = fd_info[src]; | |
3518 | } | |
3519 | return rc; | |
3520 | } | |
3521 | ||
480b0c5b GV |
3522 | /* Unix pipe() has only one arg */ |
3523 | int | |
3524 | sys_pipe (int * phandles) | |
3525 | { | |
3526 | int rc; | |
3527 | unsigned flags; | |
480b0c5b | 3528 | |
76b3903d GV |
3529 | /* make pipe handles non-inheritable; when we spawn a child, we |
3530 | replace the relevant handle with an inheritable one. Also put | |
3531 | pipes into binary mode; we will do text mode translation ourselves | |
3532 | if required. */ | |
3533 | rc = _pipe (phandles, 0, _O_NOINHERIT | _O_BINARY); | |
480b0c5b GV |
3534 | |
3535 | if (rc == 0) | |
3536 | { | |
cb72110d JR |
3537 | /* Protect against overflow, since Windows can open more handles than |
3538 | our fd_info array has room for. */ | |
3539 | if (phandles[0] >= MAXDESC || phandles[1] >= MAXDESC) | |
3540 | { | |
3541 | _close (phandles[0]); | |
3542 | _close (phandles[1]); | |
3543 | rc = -1; | |
3544 | } | |
3545 | else | |
3546 | { | |
3547 | flags = FILE_PIPE | FILE_READ | FILE_BINARY; | |
3548 | fd_info[phandles[0]].flags = flags; | |
480b0c5b | 3549 | |
cb72110d JR |
3550 | flags = FILE_PIPE | FILE_WRITE | FILE_BINARY; |
3551 | fd_info[phandles[1]].flags = flags; | |
3552 | } | |
480b0c5b GV |
3553 | } |
3554 | ||
3555 | return rc; | |
3556 | } | |
3557 | ||
f7554349 | 3558 | /* From ntproc.c */ |
78806724 | 3559 | extern int w32_pipe_read_delay; |
f7554349 | 3560 | |
480b0c5b GV |
3561 | /* Function to do blocking read of one byte, needed to implement |
3562 | select. It is only allowed on sockets and pipes. */ | |
3563 | int | |
3564 | _sys_read_ahead (int fd) | |
3565 | { | |
3566 | child_process * cp; | |
3567 | int rc; | |
3568 | ||
3569 | if (fd < 0 || fd >= MAXDESC) | |
3570 | return STATUS_READ_ERROR; | |
3571 | ||
3572 | cp = fd_info[fd].cp; | |
3573 | ||
3574 | if (cp == NULL || cp->fd != fd || cp->status != STATUS_READ_READY) | |
3575 | return STATUS_READ_ERROR; | |
3576 | ||
3577 | if ((fd_info[fd].flags & (FILE_PIPE | FILE_SOCKET)) == 0 | |
3578 | || (fd_info[fd].flags & FILE_READ) == 0) | |
3579 | { | |
3580 | DebPrint (("_sys_read_ahead: internal error: fd %d is not a pipe or socket!\n", fd)); | |
3581 | abort (); | |
3582 | } | |
177c0ea7 | 3583 | |
480b0c5b | 3584 | cp->status = STATUS_READ_IN_PROGRESS; |
177c0ea7 | 3585 | |
480b0c5b | 3586 | if (fd_info[fd].flags & FILE_PIPE) |
f7554349 | 3587 | { |
f7554349 KH |
3588 | rc = _read (fd, &cp->chr, sizeof (char)); |
3589 | ||
3590 | /* Give subprocess time to buffer some more output for us before | |
e9e23e23 | 3591 | reporting that input is available; we need this because Windows 95 |
f7554349 KH |
3592 | connects DOS programs to pipes by making the pipe appear to be |
3593 | the normal console stdout - as a result most DOS programs will | |
3594 | write to stdout without buffering, ie. one character at a | |
fbd6baed | 3595 | time. Even some W32 programs do this - "dir" in a command |
f7554349 KH |
3596 | shell on NT is very slow if we don't do this. */ |
3597 | if (rc > 0) | |
3598 | { | |
78806724 | 3599 | int wait = w32_pipe_read_delay; |
f7554349 KH |
3600 | |
3601 | if (wait > 0) | |
3602 | Sleep (wait); | |
3603 | else if (wait < 0) | |
3604 | while (++wait <= 0) | |
3605 | /* Yield remainder of our time slice, effectively giving a | |
3606 | temporary priority boost to the child process. */ | |
3607 | Sleep (0); | |
3608 | } | |
3609 | } | |
480b0c5b GV |
3610 | #ifdef HAVE_SOCKETS |
3611 | else if (fd_info[fd].flags & FILE_SOCKET) | |
ecd270eb JR |
3612 | { |
3613 | unsigned long nblock = 0; | |
3614 | /* We always want this to block, so temporarily disable NDELAY. */ | |
3615 | if (fd_info[fd].flags & FILE_NDELAY) | |
3616 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONBIO, &nblock); | |
3617 | ||
3618 | rc = pfn_recv (SOCK_HANDLE (fd), &cp->chr, sizeof (char), 0); | |
3619 | ||
3620 | if (fd_info[fd].flags & FILE_NDELAY) | |
3621 | { | |
3622 | nblock = 1; | |
3623 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONBIO, &nblock); | |
3624 | } | |
3625 | } | |
480b0c5b | 3626 | #endif |
177c0ea7 | 3627 | |
480b0c5b GV |
3628 | if (rc == sizeof (char)) |
3629 | cp->status = STATUS_READ_SUCCEEDED; | |
3630 | else | |
3631 | cp->status = STATUS_READ_FAILED; | |
3632 | ||
3633 | return cp->status; | |
3634 | } | |
3635 | ||
3636 | int | |
3637 | sys_read (int fd, char * buffer, unsigned int count) | |
3638 | { | |
3639 | int nchars; | |
480b0c5b GV |
3640 | int to_read; |
3641 | DWORD waiting; | |
76b3903d | 3642 | char * orig_buffer = buffer; |
480b0c5b GV |
3643 | |
3644 | if (fd < 0 || fd >= MAXDESC) | |
3645 | { | |
3646 | errno = EBADF; | |
3647 | return -1; | |
3648 | } | |
3649 | ||
3650 | if (fd_info[fd].flags & (FILE_PIPE | FILE_SOCKET)) | |
3651 | { | |
3652 | child_process *cp = fd_info[fd].cp; | |
3653 | ||
3654 | if ((fd_info[fd].flags & FILE_READ) == 0) | |
3655 | { | |
3656 | errno = EBADF; | |
3657 | return -1; | |
3658 | } | |
3659 | ||
76b3903d GV |
3660 | nchars = 0; |
3661 | ||
3662 | /* re-read CR carried over from last read */ | |
3663 | if (fd_info[fd].flags & FILE_LAST_CR) | |
3664 | { | |
3665 | if (fd_info[fd].flags & FILE_BINARY) abort (); | |
3666 | *buffer++ = 0x0d; | |
3667 | count--; | |
3668 | nchars++; | |
f52eb3ef | 3669 | fd_info[fd].flags &= ~FILE_LAST_CR; |
76b3903d GV |
3670 | } |
3671 | ||
480b0c5b GV |
3672 | /* presence of a child_process structure means we are operating in |
3673 | non-blocking mode - otherwise we just call _read directly. | |
3674 | Note that the child_process structure might be missing because | |
3675 | reap_subprocess has been called; in this case the pipe is | |
3676 | already broken, so calling _read on it is okay. */ | |
3677 | if (cp) | |
3678 | { | |
3679 | int current_status = cp->status; | |
3680 | ||
3681 | switch (current_status) | |
3682 | { | |
3683 | case STATUS_READ_FAILED: | |
3684 | case STATUS_READ_ERROR: | |
f52eb3ef GV |
3685 | /* report normal EOF if nothing in buffer */ |
3686 | if (nchars <= 0) | |
3687 | fd_info[fd].flags |= FILE_AT_EOF; | |
3688 | return nchars; | |
480b0c5b GV |
3689 | |
3690 | case STATUS_READ_READY: | |
3691 | case STATUS_READ_IN_PROGRESS: | |
3692 | DebPrint (("sys_read called when read is in progress\n")); | |
3693 | errno = EWOULDBLOCK; | |
3694 | return -1; | |
3695 | ||
3696 | case STATUS_READ_SUCCEEDED: | |
3697 | /* consume read-ahead char */ | |
3698 | *buffer++ = cp->chr; | |
3699 | count--; | |
76b3903d | 3700 | nchars++; |
480b0c5b GV |
3701 | cp->status = STATUS_READ_ACKNOWLEDGED; |
3702 | ResetEvent (cp->char_avail); | |
3703 | ||
3704 | case STATUS_READ_ACKNOWLEDGED: | |
3705 | break; | |
3706 | ||
3707 | default: | |
3708 | DebPrint (("sys_read: bad status %d\n", current_status)); | |
3709 | errno = EBADF; | |
3710 | return -1; | |
3711 | } | |
3712 | ||
3713 | if (fd_info[fd].flags & FILE_PIPE) | |
3714 | { | |
3715 | PeekNamedPipe ((HANDLE) _get_osfhandle (fd), NULL, 0, NULL, &waiting, NULL); | |
3716 | to_read = min (waiting, (DWORD) count); | |
f52eb3ef GV |
3717 | |
3718 | if (to_read > 0) | |
3719 | nchars += _read (fd, buffer, to_read); | |
480b0c5b GV |
3720 | } |
3721 | #ifdef HAVE_SOCKETS | |
3722 | else /* FILE_SOCKET */ | |
3723 | { | |
f249a012 | 3724 | if (winsock_lib == NULL) abort (); |
480b0c5b GV |
3725 | |
3726 | /* do the equivalent of a non-blocking read */ | |
3727 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONREAD, &waiting); | |
76b3903d | 3728 | if (waiting == 0 && nchars == 0) |
480b0c5b GV |
3729 | { |
3730 | h_errno = errno = EWOULDBLOCK; | |
3731 | return -1; | |
3732 | } | |
3733 | ||
480b0c5b GV |
3734 | if (waiting) |
3735 | { | |
3736 | /* always use binary mode for sockets */ | |
76b3903d GV |
3737 | int res = pfn_recv (SOCK_HANDLE (fd), buffer, count, 0); |
3738 | if (res == SOCKET_ERROR) | |
480b0c5b GV |
3739 | { |
3740 | DebPrint(("sys_read.recv failed with error %d on socket %ld\n", | |
3741 | pfn_WSAGetLastError (), SOCK_HANDLE (fd))); | |
76b3903d GV |
3742 | set_errno (); |
3743 | return -1; | |
480b0c5b | 3744 | } |
76b3903d | 3745 | nchars += res; |
480b0c5b GV |
3746 | } |
3747 | } | |
3748 | #endif | |
3749 | } | |
3750 | else | |
f52eb3ef GV |
3751 | { |
3752 | int nread = _read (fd, buffer, count); | |
3753 | if (nread >= 0) | |
3754 | nchars += nread; | |
3755 | else if (nchars == 0) | |
3756 | nchars = nread; | |
3757 | } | |
76b3903d | 3758 | |
f52eb3ef GV |
3759 | if (nchars <= 0) |
3760 | fd_info[fd].flags |= FILE_AT_EOF; | |
76b3903d | 3761 | /* Perform text mode translation if required. */ |
f52eb3ef | 3762 | else if ((fd_info[fd].flags & FILE_BINARY) == 0) |
76b3903d GV |
3763 | { |
3764 | nchars = crlf_to_lf (nchars, orig_buffer); | |
3765 | /* If buffer contains only CR, return that. To be absolutely | |
3766 | sure we should attempt to read the next char, but in | |
3767 | practice a CR to be followed by LF would not appear by | |
3768 | itself in the buffer. */ | |
3769 | if (nchars > 1 && orig_buffer[nchars - 1] == 0x0d) | |
3770 | { | |
3771 | fd_info[fd].flags |= FILE_LAST_CR; | |
3772 | nchars--; | |
3773 | } | |
76b3903d | 3774 | } |
480b0c5b GV |
3775 | } |
3776 | else | |
3777 | nchars = _read (fd, buffer, count); | |
3778 | ||
76b3903d | 3779 | return nchars; |
480b0c5b GV |
3780 | } |
3781 | ||
3782 | /* For now, don't bother with a non-blocking mode */ | |
3783 | int | |
3784 | sys_write (int fd, const void * buffer, unsigned int count) | |
3785 | { | |
3786 | int nchars; | |
3787 | ||
3788 | if (fd < 0 || fd >= MAXDESC) | |
3789 | { | |
3790 | errno = EBADF; | |
3791 | return -1; | |
3792 | } | |
3793 | ||
3794 | if (fd_info[fd].flags & (FILE_PIPE | FILE_SOCKET)) | |
76b3903d GV |
3795 | { |
3796 | if ((fd_info[fd].flags & FILE_WRITE) == 0) | |
3797 | { | |
3798 | errno = EBADF; | |
3799 | return -1; | |
3800 | } | |
3801 | ||
3802 | /* Perform text mode translation if required. */ | |
3803 | if ((fd_info[fd].flags & FILE_BINARY) == 0) | |
3804 | { | |
3805 | char * tmpbuf = alloca (count * 2); | |
3806 | unsigned char * src = (void *)buffer; | |
3807 | unsigned char * dst = tmpbuf; | |
3808 | int nbytes = count; | |
3809 | ||
3810 | while (1) | |
3811 | { | |
3812 | unsigned char *next; | |
3813 | /* copy next line or remaining bytes */ | |
3814 | next = _memccpy (dst, src, '\n', nbytes); | |
3815 | if (next) | |
3816 | { | |
3817 | /* copied one line ending with '\n' */ | |
3818 | int copied = next - dst; | |
3819 | nbytes -= copied; | |
3820 | src += copied; | |
3821 | /* insert '\r' before '\n' */ | |
3822 | next[-1] = '\r'; | |
3823 | next[0] = '\n'; | |
3824 | dst = next + 1; | |
3825 | count++; | |
177c0ea7 | 3826 | } |
76b3903d GV |
3827 | else |
3828 | /* copied remaining partial line -> now finished */ | |
3829 | break; | |
3830 | } | |
3831 | buffer = tmpbuf; | |
3832 | } | |
3833 | } | |
3834 | ||
480b0c5b GV |
3835 | #ifdef HAVE_SOCKETS |
3836 | if (fd_info[fd].flags & FILE_SOCKET) | |
3837 | { | |
30a32e0e | 3838 | unsigned long nblock = 0; |
f249a012 | 3839 | if (winsock_lib == NULL) abort (); |
30a32e0e JR |
3840 | |
3841 | /* TODO: implement select() properly so non-blocking I/O works. */ | |
3842 | /* For now, make sure the write blocks. */ | |
3843 | if (fd_info[fd].flags & FILE_NDELAY) | |
3844 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONBIO, &nblock); | |
3845 | ||
480b0c5b | 3846 | nchars = pfn_send (SOCK_HANDLE (fd), buffer, count, 0); |
30a32e0e JR |
3847 | |
3848 | /* Set the socket back to non-blocking if it was before, | |
3849 | for other operations that support it. */ | |
3850 | if (fd_info[fd].flags & FILE_NDELAY) | |
3851 | { | |
3852 | nblock = 1; | |
3853 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONBIO, &nblock); | |
3854 | } | |
3855 | ||
480b0c5b GV |
3856 | if (nchars == SOCKET_ERROR) |
3857 | { | |
670773af | 3858 | DebPrint(("sys_write.send failed with error %d on socket %ld\n", |
480b0c5b GV |
3859 | pfn_WSAGetLastError (), SOCK_HANDLE (fd))); |
3860 | set_errno (); | |
3861 | } | |
3862 | } | |
3863 | else | |
3864 | #endif | |
3865 | nchars = _write (fd, buffer, count); | |
3866 | ||
3867 | return nchars; | |
3868 | } | |
3869 | ||
f52eb3ef GV |
3870 | static void |
3871 | check_windows_init_file () | |
3872 | { | |
3873 | extern int noninteractive, inhibit_window_system; | |
3874 | ||
3875 | /* A common indication that Emacs is not installed properly is when | |
3876 | it cannot find the Windows installation file. If this file does | |
3877 | not exist in the expected place, tell the user. */ | |
3878 | ||
177c0ea7 | 3879 | if (!noninteractive && !inhibit_window_system) |
d54abccd GV |
3880 | { |
3881 | extern Lisp_Object Vwindow_system, Vload_path, Qfile_exists_p; | |
a0b9c838 | 3882 | Lisp_Object objs[2]; |
96ef7d42 | 3883 | Lisp_Object full_load_path; |
d54abccd GV |
3884 | Lisp_Object init_file; |
3885 | int fd; | |
f52eb3ef | 3886 | |
a0b9c838 GV |
3887 | objs[0] = Vload_path; |
3888 | objs[1] = decode_env_path (0, (getenv ("EMACSLOADPATH"))); | |
3889 | full_load_path = Fappend (2, objs); | |
d54abccd | 3890 | init_file = build_string ("term/w32-win"); |
7d032932 | 3891 | fd = openp (full_load_path, init_file, Vload_suffixes, NULL, Qnil); |
177c0ea7 | 3892 | if (fd < 0) |
d54abccd | 3893 | { |
96ef7d42 | 3894 | Lisp_Object load_path_print = Fprin1_to_string (full_load_path, Qnil); |
d5db4077 KR |
3895 | char *init_file_name = SDATA (init_file); |
3896 | char *load_path = SDATA (load_path_print); | |
d54abccd GV |
3897 | char *buffer = alloca (1024); |
3898 | ||
177c0ea7 | 3899 | sprintf (buffer, |
d54abccd GV |
3900 | "The Emacs Windows initialization file \"%s.el\" " |
3901 | "could not be found in your Emacs installation. " | |
3902 | "Emacs checked the following directories for this file:\n" | |
3903 | "\n%s\n\n" | |
3904 | "When Emacs cannot find this file, it usually means that it " | |
3905 | "was not installed properly, or its distribution file was " | |
3906 | "not unpacked properly.\nSee the README.W32 file in the " | |
3907 | "top-level Emacs directory for more information.", | |
3908 | init_file_name, load_path); | |
3909 | MessageBox (NULL, | |
3910 | buffer, | |
3911 | "Emacs Abort Dialog", | |
3912 | MB_OK | MB_ICONEXCLAMATION | MB_TASKMODAL); | |
f52eb3ef GV |
3913 | /* Use the low-level Emacs abort. */ |
3914 | #undef abort | |
d54abccd GV |
3915 | abort (); |
3916 | } | |
3917 | else | |
3918 | { | |
a302c7ae | 3919 | _close (fd); |
d54abccd | 3920 | } |
f52eb3ef | 3921 | } |
f52eb3ef | 3922 | } |
480b0c5b GV |
3923 | |
3924 | void | |
3925 | term_ntproc () | |
3926 | { | |
3927 | #ifdef HAVE_SOCKETS | |
3928 | /* shutdown the socket interface if necessary */ | |
3929 | term_winsock (); | |
3930 | #endif | |
52c7f9ee JR |
3931 | |
3932 | term_w32select (); | |
480b0c5b GV |
3933 | } |
3934 | ||
3935 | void | |
3936 | init_ntproc () | |
3937 | { | |
3938 | #ifdef HAVE_SOCKETS | |
f249a012 RS |
3939 | /* Initialise the socket interface now if available and requested by |
3940 | the user by defining PRELOAD_WINSOCK; otherwise loading will be | |
fbd6baed | 3941 | delayed until open-network-stream is called (w32-has-winsock can |
f249a012 RS |
3942 | also be used to dynamically load or reload winsock). |
3943 | ||
3944 | Conveniently, init_environment is called before us, so | |
3945 | PRELOAD_WINSOCK can be set in the registry. */ | |
3946 | ||
3947 | /* Always initialize this correctly. */ | |
3948 | winsock_lib = NULL; | |
3949 | ||
3950 | if (getenv ("PRELOAD_WINSOCK") != NULL) | |
3951 | init_winsock (TRUE); | |
480b0c5b GV |
3952 | #endif |
3953 | ||
3954 | /* Initial preparation for subprocess support: replace our standard | |
3955 | handles with non-inheritable versions. */ | |
3956 | { | |
3957 | HANDLE parent; | |
3958 | HANDLE stdin_save = INVALID_HANDLE_VALUE; | |
3959 | HANDLE stdout_save = INVALID_HANDLE_VALUE; | |
3960 | HANDLE stderr_save = INVALID_HANDLE_VALUE; | |
3961 | ||
3962 | parent = GetCurrentProcess (); | |
3963 | ||
3964 | /* ignore errors when duplicating and closing; typically the | |
3965 | handles will be invalid when running as a gui program. */ | |
177c0ea7 JB |
3966 | DuplicateHandle (parent, |
3967 | GetStdHandle (STD_INPUT_HANDLE), | |
480b0c5b | 3968 | parent, |
177c0ea7 JB |
3969 | &stdin_save, |
3970 | 0, | |
3971 | FALSE, | |
480b0c5b | 3972 | DUPLICATE_SAME_ACCESS); |
177c0ea7 | 3973 | |
480b0c5b GV |
3974 | DuplicateHandle (parent, |
3975 | GetStdHandle (STD_OUTPUT_HANDLE), | |
3976 | parent, | |
3977 | &stdout_save, | |
3978 | 0, | |
3979 | FALSE, | |
3980 | DUPLICATE_SAME_ACCESS); | |
177c0ea7 | 3981 | |
480b0c5b GV |
3982 | DuplicateHandle (parent, |
3983 | GetStdHandle (STD_ERROR_HANDLE), | |
3984 | parent, | |
3985 | &stderr_save, | |
3986 | 0, | |
3987 | FALSE, | |
3988 | DUPLICATE_SAME_ACCESS); | |
177c0ea7 | 3989 | |
480b0c5b GV |
3990 | fclose (stdin); |
3991 | fclose (stdout); | |
3992 | fclose (stderr); | |
3993 | ||
3994 | if (stdin_save != INVALID_HANDLE_VALUE) | |
3995 | _open_osfhandle ((long) stdin_save, O_TEXT); | |
3996 | else | |
76b3903d GV |
3997 | _open ("nul", O_TEXT | O_NOINHERIT | O_RDONLY); |
3998 | _fdopen (0, "r"); | |
480b0c5b GV |
3999 | |
4000 | if (stdout_save != INVALID_HANDLE_VALUE) | |
4001 | _open_osfhandle ((long) stdout_save, O_TEXT); | |
4002 | else | |
76b3903d GV |
4003 | _open ("nul", O_TEXT | O_NOINHERIT | O_WRONLY); |
4004 | _fdopen (1, "w"); | |
480b0c5b GV |
4005 | |
4006 | if (stderr_save != INVALID_HANDLE_VALUE) | |
4007 | _open_osfhandle ((long) stderr_save, O_TEXT); | |
4008 | else | |
76b3903d GV |
4009 | _open ("nul", O_TEXT | O_NOINHERIT | O_WRONLY); |
4010 | _fdopen (2, "w"); | |
480b0c5b GV |
4011 | } |
4012 | ||
4013 | /* unfortunately, atexit depends on implementation of malloc */ | |
4014 | /* atexit (term_ntproc); */ | |
4015 | signal (SIGABRT, term_ntproc); | |
76b3903d GV |
4016 | |
4017 | /* determine which drives are fixed, for GetCachedVolumeInformation */ | |
4018 | { | |
4019 | /* GetDriveType must have trailing backslash. */ | |
4020 | char drive[] = "A:\\"; | |
4021 | ||
4022 | /* Loop over all possible drive letters */ | |
4023 | while (*drive <= 'Z') | |
4024 | { | |
4025 | /* Record if this drive letter refers to a fixed drive. */ | |
177c0ea7 | 4026 | fixed_drives[DRIVE_INDEX (*drive)] = |
76b3903d GV |
4027 | (GetDriveType (drive) == DRIVE_FIXED); |
4028 | ||
4029 | (*drive)++; | |
4030 | } | |
a302c7ae AI |
4031 | |
4032 | /* Reset the volume info cache. */ | |
4033 | volume_cache = NULL; | |
76b3903d | 4034 | } |
177c0ea7 | 4035 | |
d54abccd GV |
4036 | /* Check to see if Emacs has been installed correctly. */ |
4037 | check_windows_init_file (); | |
480b0c5b GV |
4038 | } |
4039 | ||
9785d95b BK |
4040 | /* |
4041 | globals_of_w32 is used to initialize those global variables that | |
4042 | must always be initialized on startup even when the global variable | |
4043 | initialized is non zero (see the function main in emacs.c). | |
4044 | */ | |
4045 | void globals_of_w32 () | |
4046 | { | |
4047 | g_b_init_is_windows_9x = 0; | |
4048 | g_b_init_open_process_token = 0; | |
4049 | g_b_init_get_token_information = 0; | |
4050 | g_b_init_lookup_account_sid = 0; | |
4051 | g_b_init_get_sid_identifier_authority = 0; | |
4052 | } | |
4053 | ||
480b0c5b | 4054 | /* end of nt.c */ |
ab5796a9 MB |
4055 | |
4056 | /* arch-tag: 90442dd3-37be-482b-b272-ac752e3049f1 | |
4057 | (do not change this comment) */ |