Commit | Line | Data |
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e9e23e23 | 1 | /* Utility and Unix shadow routines for GNU Emacs on the Microsoft W32 API. |
35f0d482 | 2 | Copyright (C) 1994, 1995 Free Software Foundation, Inc. |
95ed0025 | 3 | |
3b7ad313 EN |
4 | This file is part of GNU Emacs. |
5 | ||
6 | GNU Emacs is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2, or (at your option) | |
9 | any later version. | |
10 | ||
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Emacs; see the file COPYING. If not, write to | |
18 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
19 | Boston, MA 02111-1307, USA. | |
95ed0025 RS |
20 | |
21 | Geoff Voelker (voelker@cs.washington.edu) 7-29-94 | |
22 | */ | |
23 | ||
00b3b7b3 | 24 | |
76b3903d | 25 | #include <stddef.h> /* for offsetof */ |
95ed0025 RS |
26 | #include <stdlib.h> |
27 | #include <stdio.h> | |
28 | #include <io.h> | |
480b0c5b | 29 | #include <errno.h> |
95ed0025 RS |
30 | #include <fcntl.h> |
31 | #include <ctype.h> | |
480b0c5b GV |
32 | #include <signal.h> |
33 | #include <sys/time.h> | |
16bb7578 | 34 | #include <sys/utime.h> |
480b0c5b GV |
35 | |
36 | /* must include CRT headers *before* config.h */ | |
37 | #include "config.h" | |
38 | #undef access | |
39 | #undef chdir | |
40 | #undef chmod | |
41 | #undef creat | |
42 | #undef ctime | |
43 | #undef fopen | |
44 | #undef link | |
45 | #undef mkdir | |
46 | #undef mktemp | |
47 | #undef open | |
48 | #undef rename | |
49 | #undef rmdir | |
50 | #undef unlink | |
51 | ||
52 | #undef close | |
53 | #undef dup | |
54 | #undef dup2 | |
55 | #undef pipe | |
56 | #undef read | |
57 | #undef write | |
95ed0025 | 58 | |
95ed0025 | 59 | #include "lisp.h" |
95ed0025 RS |
60 | |
61 | #include <pwd.h> | |
62 | ||
480b0c5b | 63 | #include <windows.h> |
00b3b7b3 | 64 | |
480b0c5b GV |
65 | #ifdef HAVE_SOCKETS /* TCP connection support, if kernel can do it */ |
66 | #include <sys/socket.h> | |
67 | #undef socket | |
68 | #undef bind | |
69 | #undef connect | |
70 | #undef htons | |
71 | #undef ntohs | |
72 | #undef inet_addr | |
73 | #undef gethostname | |
74 | #undef gethostbyname | |
75 | #undef getservbyname | |
380961a6 | 76 | #undef shutdown |
480b0c5b | 77 | #endif |
00b3b7b3 | 78 | |
489f9371 | 79 | #include "w32.h" |
480b0c5b | 80 | #include "ndir.h" |
489f9371 | 81 | #include "w32heap.h" |
76b3903d | 82 | |
03887dd3 KH |
83 | #undef min |
84 | #undef max | |
85 | #define min(x, y) (((x) < (y)) ? (x) : (y)) | |
86 | #define max(x, y) (((x) > (y)) ? (x) : (y)) | |
87 | ||
76b3903d GV |
88 | extern Lisp_Object Vw32_downcase_file_names; |
89 | extern Lisp_Object Vw32_generate_fake_inodes; | |
90 | extern Lisp_Object Vw32_get_true_file_attributes; | |
91 | ||
92 | static char startup_dir[MAXPATHLEN]; | |
00b3b7b3 | 93 | |
95ed0025 | 94 | /* Get the current working directory. */ |
480b0c5b | 95 | char * |
95ed0025 RS |
96 | getwd (char *dir) |
97 | { | |
76b3903d | 98 | #if 0 |
480b0c5b GV |
99 | if (GetCurrentDirectory (MAXPATHLEN, dir) > 0) |
100 | return dir; | |
101 | return NULL; | |
76b3903d GV |
102 | #else |
103 | /* Emacs doesn't actually change directory itself, and we want to | |
104 | force our real wd to be where emacs.exe is to avoid unnecessary | |
105 | conflicts when trying to rename or delete directories. */ | |
106 | strcpy (dir, startup_dir); | |
107 | return dir; | |
108 | #endif | |
95ed0025 RS |
109 | } |
110 | ||
480b0c5b | 111 | #ifndef HAVE_SOCKETS |
95ed0025 RS |
112 | /* Emulate gethostname. */ |
113 | int | |
114 | gethostname (char *buffer, int size) | |
115 | { | |
116 | /* NT only allows small host names, so the buffer is | |
117 | certainly large enough. */ | |
118 | return !GetComputerName (buffer, &size); | |
119 | } | |
480b0c5b | 120 | #endif /* HAVE_SOCKETS */ |
95ed0025 RS |
121 | |
122 | /* Emulate getloadavg. */ | |
123 | int | |
124 | getloadavg (double loadavg[], int nelem) | |
125 | { | |
126 | int i; | |
127 | ||
128 | /* A faithful emulation is going to have to be saved for a rainy day. */ | |
129 | for (i = 0; i < nelem; i++) | |
130 | { | |
131 | loadavg[i] = 0.0; | |
132 | } | |
133 | return i; | |
134 | } | |
135 | ||
480b0c5b | 136 | /* Emulate getpwuid, getpwnam and others. */ |
95ed0025 | 137 | |
051fe60d GV |
138 | #define PASSWD_FIELD_SIZE 256 |
139 | ||
140 | static char the_passwd_name[PASSWD_FIELD_SIZE]; | |
141 | static char the_passwd_passwd[PASSWD_FIELD_SIZE]; | |
142 | static char the_passwd_gecos[PASSWD_FIELD_SIZE]; | |
143 | static char the_passwd_dir[PASSWD_FIELD_SIZE]; | |
144 | static char the_passwd_shell[PASSWD_FIELD_SIZE]; | |
95ed0025 RS |
145 | |
146 | static struct passwd the_passwd = | |
147 | { | |
148 | the_passwd_name, | |
149 | the_passwd_passwd, | |
150 | 0, | |
151 | 0, | |
152 | 0, | |
153 | the_passwd_gecos, | |
154 | the_passwd_dir, | |
155 | the_passwd_shell, | |
156 | }; | |
157 | ||
480b0c5b GV |
158 | int |
159 | getuid () | |
160 | { | |
161 | return the_passwd.pw_uid; | |
162 | } | |
163 | ||
164 | int | |
165 | geteuid () | |
166 | { | |
167 | /* I could imagine arguing for checking to see whether the user is | |
168 | in the Administrators group and returning a UID of 0 for that | |
169 | case, but I don't know how wise that would be in the long run. */ | |
170 | return getuid (); | |
171 | } | |
172 | ||
173 | int | |
174 | getgid () | |
175 | { | |
176 | return the_passwd.pw_gid; | |
177 | } | |
178 | ||
179 | int | |
180 | getegid () | |
181 | { | |
182 | return getgid (); | |
183 | } | |
184 | ||
95ed0025 RS |
185 | struct passwd * |
186 | getpwuid (int uid) | |
187 | { | |
480b0c5b GV |
188 | if (uid == the_passwd.pw_uid) |
189 | return &the_passwd; | |
190 | return NULL; | |
95ed0025 RS |
191 | } |
192 | ||
193 | struct passwd * | |
194 | getpwnam (char *name) | |
195 | { | |
196 | struct passwd *pw; | |
197 | ||
198 | pw = getpwuid (getuid ()); | |
199 | if (!pw) | |
200 | return pw; | |
201 | ||
480b0c5b | 202 | if (stricmp (name, pw->pw_name)) |
95ed0025 RS |
203 | return NULL; |
204 | ||
205 | return pw; | |
206 | } | |
207 | ||
480b0c5b GV |
208 | void |
209 | init_user_info () | |
95ed0025 | 210 | { |
480b0c5b GV |
211 | /* Find the user's real name by opening the process token and |
212 | looking up the name associated with the user-sid in that token. | |
213 | ||
214 | Use the relative portion of the identifier authority value from | |
215 | the user-sid as the user id value (same for group id using the | |
216 | primary group sid from the process token). */ | |
217 | ||
218 | char user_sid[256], name[256], domain[256]; | |
219 | DWORD length = sizeof (name), dlength = sizeof (domain), trash; | |
220 | HANDLE token = NULL; | |
221 | SID_NAME_USE user_type; | |
222 | ||
223 | if (OpenProcessToken (GetCurrentProcess (), TOKEN_QUERY, &token) | |
224 | && GetTokenInformation (token, TokenUser, | |
225 | (PVOID) user_sid, sizeof (user_sid), &trash) | |
226 | && LookupAccountSid (NULL, *((PSID *) user_sid), name, &length, | |
227 | domain, &dlength, &user_type)) | |
d1c1c3d2 | 228 | { |
480b0c5b GV |
229 | strcpy (the_passwd.pw_name, name); |
230 | /* Determine a reasonable uid value. */ | |
231 | if (stricmp ("administrator", name) == 0) | |
232 | { | |
233 | the_passwd.pw_uid = 0; | |
234 | the_passwd.pw_gid = 0; | |
235 | } | |
236 | else | |
237 | { | |
238 | SID_IDENTIFIER_AUTHORITY * pSIA; | |
239 | ||
240 | pSIA = GetSidIdentifierAuthority (*((PSID *) user_sid)); | |
241 | /* I believe the relative portion is the last 4 bytes (of 6) | |
242 | with msb first. */ | |
243 | the_passwd.pw_uid = ((pSIA->Value[2] << 24) + | |
244 | (pSIA->Value[3] << 16) + | |
245 | (pSIA->Value[4] << 8) + | |
246 | (pSIA->Value[5] << 0)); | |
247 | /* restrict to conventional uid range for normal users */ | |
248 | the_passwd.pw_uid = the_passwd.pw_uid % 60001; | |
249 | ||
250 | /* Get group id */ | |
251 | if (GetTokenInformation (token, TokenPrimaryGroup, | |
252 | (PVOID) user_sid, sizeof (user_sid), &trash)) | |
253 | { | |
254 | SID_IDENTIFIER_AUTHORITY * pSIA; | |
255 | ||
256 | pSIA = GetSidIdentifierAuthority (*((PSID *) user_sid)); | |
257 | the_passwd.pw_gid = ((pSIA->Value[2] << 24) + | |
258 | (pSIA->Value[3] << 16) + | |
259 | (pSIA->Value[4] << 8) + | |
260 | (pSIA->Value[5] << 0)); | |
261 | /* I don't know if this is necessary, but for safety... */ | |
262 | the_passwd.pw_gid = the_passwd.pw_gid % 60001; | |
263 | } | |
264 | else | |
265 | the_passwd.pw_gid = the_passwd.pw_uid; | |
266 | } | |
267 | } | |
268 | /* If security calls are not supported (presumably because we | |
269 | are running under Windows 95), fallback to this. */ | |
270 | else if (GetUserName (name, &length)) | |
271 | { | |
272 | strcpy (the_passwd.pw_name, name); | |
273 | if (stricmp ("administrator", name) == 0) | |
274 | the_passwd.pw_uid = 0; | |
275 | else | |
276 | the_passwd.pw_uid = 123; | |
277 | the_passwd.pw_gid = the_passwd.pw_uid; | |
278 | } | |
279 | else | |
280 | { | |
281 | strcpy (the_passwd.pw_name, "unknown"); | |
282 | the_passwd.pw_uid = 123; | |
283 | the_passwd.pw_gid = 123; | |
d1c1c3d2 | 284 | } |
95ed0025 | 285 | |
480b0c5b GV |
286 | /* Ensure HOME and SHELL are defined. */ |
287 | if (getenv ("HOME") == NULL) | |
288 | putenv ("HOME=c:/"); | |
289 | if (getenv ("SHELL") == NULL) | |
76b3903d | 290 | putenv (os_subtype == OS_WIN95 ? "SHELL=command" : "SHELL=cmd"); |
95ed0025 | 291 | |
480b0c5b GV |
292 | /* Set dir and shell from environment variables. */ |
293 | strcpy (the_passwd.pw_dir, getenv ("HOME")); | |
294 | strcpy (the_passwd.pw_shell, getenv ("SHELL")); | |
bd4a449f | 295 | |
480b0c5b GV |
296 | if (token) |
297 | CloseHandle (token); | |
95ed0025 RS |
298 | } |
299 | ||
95ed0025 | 300 | int |
480b0c5b | 301 | random () |
95ed0025 | 302 | { |
480b0c5b GV |
303 | /* rand () on NT gives us 15 random bits...hack together 30 bits. */ |
304 | return ((rand () << 15) | rand ()); | |
95ed0025 RS |
305 | } |
306 | ||
95ed0025 | 307 | void |
480b0c5b | 308 | srandom (int seed) |
95ed0025 | 309 | { |
480b0c5b | 310 | srand (seed); |
95ed0025 RS |
311 | } |
312 | ||
76b3903d | 313 | |
cbe39279 RS |
314 | /* Normalize filename by converting all path separators to |
315 | the specified separator. Also conditionally convert upper | |
316 | case path name components to lower case. */ | |
317 | ||
318 | static void | |
319 | normalize_filename (fp, path_sep) | |
320 | register char *fp; | |
321 | char path_sep; | |
322 | { | |
323 | char sep; | |
324 | char *elem; | |
325 | ||
5162ffce MB |
326 | /* Always lower-case drive letters a-z, even if the filesystem |
327 | preserves case in filenames. | |
328 | This is so filenames can be compared by string comparison | |
329 | functions that are case-sensitive. Even case-preserving filesystems | |
330 | do not distinguish case in drive letters. */ | |
331 | if (fp[1] == ':' && *fp >= 'A' && *fp <= 'Z') | |
332 | { | |
333 | *fp += 'a' - 'A'; | |
334 | fp += 2; | |
335 | } | |
336 | ||
fbd6baed | 337 | if (NILP (Vw32_downcase_file_names)) |
cbe39279 RS |
338 | { |
339 | while (*fp) | |
340 | { | |
341 | if (*fp == '/' || *fp == '\\') | |
342 | *fp = path_sep; | |
343 | fp++; | |
344 | } | |
345 | return; | |
346 | } | |
347 | ||
348 | sep = path_sep; /* convert to this path separator */ | |
349 | elem = fp; /* start of current path element */ | |
350 | ||
351 | do { | |
352 | if (*fp >= 'a' && *fp <= 'z') | |
353 | elem = 0; /* don't convert this element */ | |
354 | ||
355 | if (*fp == 0 || *fp == ':') | |
356 | { | |
357 | sep = *fp; /* restore current separator (or 0) */ | |
358 | *fp = '/'; /* after conversion of this element */ | |
359 | } | |
360 | ||
361 | if (*fp == '/' || *fp == '\\') | |
362 | { | |
363 | if (elem && elem != fp) | |
364 | { | |
365 | *fp = 0; /* temporary end of string */ | |
366 | _strlwr (elem); /* while we convert to lower case */ | |
367 | } | |
368 | *fp = sep; /* convert (or restore) path separator */ | |
369 | elem = fp + 1; /* next element starts after separator */ | |
370 | sep = path_sep; | |
371 | } | |
372 | } while (*fp++); | |
373 | } | |
374 | ||
480b0c5b | 375 | /* Destructively turn backslashes into slashes. */ |
95ed0025 | 376 | void |
480b0c5b GV |
377 | dostounix_filename (p) |
378 | register char *p; | |
95ed0025 | 379 | { |
cbe39279 | 380 | normalize_filename (p, '/'); |
95ed0025 RS |
381 | } |
382 | ||
480b0c5b | 383 | /* Destructively turn slashes into backslashes. */ |
95ed0025 | 384 | void |
480b0c5b GV |
385 | unixtodos_filename (p) |
386 | register char *p; | |
95ed0025 | 387 | { |
cbe39279 | 388 | normalize_filename (p, '\\'); |
95ed0025 RS |
389 | } |
390 | ||
480b0c5b GV |
391 | /* Remove all CR's that are followed by a LF. |
392 | (From msdos.c...probably should figure out a way to share it, | |
393 | although this code isn't going to ever change.) */ | |
35f0d482 | 394 | int |
480b0c5b GV |
395 | crlf_to_lf (n, buf) |
396 | register int n; | |
397 | register unsigned char *buf; | |
35f0d482 | 398 | { |
480b0c5b GV |
399 | unsigned char *np = buf; |
400 | unsigned char *startp = buf; | |
401 | unsigned char *endp = buf + n; | |
35f0d482 | 402 | |
480b0c5b GV |
403 | if (n == 0) |
404 | return n; | |
405 | while (buf < endp - 1) | |
95ed0025 | 406 | { |
480b0c5b GV |
407 | if (*buf == 0x0d) |
408 | { | |
409 | if (*(++buf) != 0x0a) | |
410 | *np++ = 0x0d; | |
411 | } | |
412 | else | |
413 | *np++ = *buf++; | |
95ed0025 | 414 | } |
480b0c5b GV |
415 | if (buf < endp) |
416 | *np++ = *buf++; | |
417 | return np - startp; | |
95ed0025 RS |
418 | } |
419 | ||
76b3903d GV |
420 | /* Parse the root part of file name, if present. Return length and |
421 | optionally store pointer to char after root. */ | |
422 | static int | |
423 | parse_root (char * name, char ** pPath) | |
424 | { | |
425 | char * start = name; | |
426 | ||
427 | if (name == NULL) | |
428 | return 0; | |
429 | ||
430 | /* find the root name of the volume if given */ | |
431 | if (isalpha (name[0]) && name[1] == ':') | |
432 | { | |
433 | /* skip past drive specifier */ | |
434 | name += 2; | |
435 | if (IS_DIRECTORY_SEP (name[0])) | |
436 | name++; | |
437 | } | |
438 | else if (IS_DIRECTORY_SEP (name[0]) && IS_DIRECTORY_SEP (name[1])) | |
439 | { | |
440 | int slashes = 2; | |
441 | name += 2; | |
442 | do | |
443 | { | |
444 | if (IS_DIRECTORY_SEP (*name) && --slashes == 0) | |
445 | break; | |
446 | name++; | |
447 | } | |
448 | while ( *name ); | |
449 | if (IS_DIRECTORY_SEP (name[0])) | |
450 | name++; | |
451 | } | |
452 | ||
453 | if (pPath) | |
454 | *pPath = name; | |
455 | ||
456 | return name - start; | |
457 | } | |
458 | ||
459 | /* Get long base name for name; name is assumed to be absolute. */ | |
460 | static int | |
461 | get_long_basename (char * name, char * buf, int size) | |
462 | { | |
463 | WIN32_FIND_DATA find_data; | |
464 | HANDLE dir_handle; | |
465 | int len = 0; | |
466 | ||
bb1584c8 RS |
467 | /* must be valid filename, no wild cards or other illegal characters */ |
468 | if (strpbrk (name, "*?|<>\"")) | |
469 | return 0; | |
470 | ||
76b3903d GV |
471 | dir_handle = FindFirstFile (name, &find_data); |
472 | if (dir_handle != INVALID_HANDLE_VALUE) | |
473 | { | |
474 | if ((len = strlen (find_data.cFileName)) < size) | |
475 | memcpy (buf, find_data.cFileName, len + 1); | |
476 | else | |
477 | len = 0; | |
478 | FindClose (dir_handle); | |
479 | } | |
480 | return len; | |
481 | } | |
482 | ||
483 | /* Get long name for file, if possible (assumed to be absolute). */ | |
484 | BOOL | |
485 | w32_get_long_filename (char * name, char * buf, int size) | |
486 | { | |
487 | char * o = buf; | |
488 | char * p; | |
489 | char * q; | |
490 | char full[ MAX_PATH ]; | |
491 | int len; | |
492 | ||
493 | len = strlen (name); | |
494 | if (len >= MAX_PATH) | |
495 | return FALSE; | |
496 | ||
497 | /* Use local copy for destructive modification. */ | |
498 | memcpy (full, name, len+1); | |
499 | unixtodos_filename (full); | |
500 | ||
501 | /* Copy root part verbatim. */ | |
502 | len = parse_root (full, &p); | |
503 | memcpy (o, full, len); | |
504 | o += len; | |
505 | size -= len; | |
506 | ||
507 | do | |
508 | { | |
509 | q = p; | |
510 | p = strchr (q, '\\'); | |
511 | if (p) *p = '\0'; | |
512 | len = get_long_basename (full, o, size); | |
513 | if (len > 0) | |
514 | { | |
515 | o += len; | |
516 | size -= len; | |
517 | if (p != NULL) | |
518 | { | |
519 | *p++ = '\\'; | |
520 | if (size < 2) | |
521 | return FALSE; | |
522 | *o++ = '\\'; | |
523 | size--; | |
524 | *o = '\0'; | |
525 | } | |
526 | } | |
527 | else | |
528 | return FALSE; | |
529 | } | |
530 | while (p != NULL && *p); | |
531 | ||
532 | return TRUE; | |
533 | } | |
534 | ||
535 | ||
95ed0025 RS |
536 | /* Routines that are no-ops on NT but are defined to get Emacs to compile. */ |
537 | ||
95ed0025 RS |
538 | int |
539 | sigsetmask (int signal_mask) | |
540 | { | |
541 | return 0; | |
542 | } | |
543 | ||
544 | int | |
545 | sigblock (int sig) | |
546 | { | |
547 | return 0; | |
548 | } | |
549 | ||
95ed0025 RS |
550 | int |
551 | setpgrp (int pid, int gid) | |
552 | { | |
553 | return 0; | |
554 | } | |
555 | ||
556 | int | |
557 | alarm (int seconds) | |
558 | { | |
559 | return 0; | |
560 | } | |
561 | ||
c6624584 | 562 | void |
95ed0025 RS |
563 | unrequest_sigio (void) |
564 | { | |
c6624584 | 565 | return; |
95ed0025 RS |
566 | } |
567 | ||
c6624584 | 568 | void |
95ed0025 RS |
569 | request_sigio (void) |
570 | { | |
c6624584 | 571 | return; |
95ed0025 RS |
572 | } |
573 | ||
480b0c5b | 574 | #define REG_ROOT "SOFTWARE\\GNU\\Emacs" |
f332b293 GV |
575 | |
576 | LPBYTE | |
fbd6baed | 577 | w32_get_resource (key, lpdwtype) |
f332b293 GV |
578 | char *key; |
579 | LPDWORD lpdwtype; | |
580 | { | |
581 | LPBYTE lpvalue; | |
582 | HKEY hrootkey = NULL; | |
583 | DWORD cbData; | |
584 | BOOL ok = FALSE; | |
585 | ||
586 | /* Check both the current user and the local machine to see if | |
587 | we have any resources. */ | |
588 | ||
589 | if (RegOpenKeyEx (HKEY_CURRENT_USER, REG_ROOT, 0, KEY_READ, &hrootkey) == ERROR_SUCCESS) | |
590 | { | |
591 | lpvalue = NULL; | |
592 | ||
593 | if (RegQueryValueEx (hrootkey, key, NULL, NULL, NULL, &cbData) == ERROR_SUCCESS | |
594 | && (lpvalue = (LPBYTE) xmalloc (cbData)) != NULL | |
595 | && RegQueryValueEx (hrootkey, key, NULL, lpdwtype, lpvalue, &cbData) == ERROR_SUCCESS) | |
596 | { | |
597 | return (lpvalue); | |
598 | } | |
599 | ||
600 | if (lpvalue) xfree (lpvalue); | |
601 | ||
602 | RegCloseKey (hrootkey); | |
603 | } | |
604 | ||
605 | if (RegOpenKeyEx (HKEY_LOCAL_MACHINE, REG_ROOT, 0, KEY_READ, &hrootkey) == ERROR_SUCCESS) | |
606 | { | |
607 | lpvalue = NULL; | |
608 | ||
76b3903d GV |
609 | if (RegQueryValueEx (hrootkey, key, NULL, NULL, NULL, &cbData) == ERROR_SUCCESS |
610 | && (lpvalue = (LPBYTE) xmalloc (cbData)) != NULL | |
611 | && RegQueryValueEx (hrootkey, key, NULL, lpdwtype, lpvalue, &cbData) == ERROR_SUCCESS) | |
f332b293 GV |
612 | { |
613 | return (lpvalue); | |
614 | } | |
615 | ||
616 | if (lpvalue) xfree (lpvalue); | |
617 | ||
618 | RegCloseKey (hrootkey); | |
619 | } | |
620 | ||
621 | return (NULL); | |
622 | } | |
623 | ||
75b08edb GV |
624 | char *get_emacs_configuration (void); |
625 | extern Lisp_Object Vsystem_configuration; | |
626 | ||
f332b293 GV |
627 | void |
628 | init_environment () | |
629 | { | |
f332b293 GV |
630 | /* Check for environment variables and use registry if they don't exist */ |
631 | { | |
480b0c5b GV |
632 | int i; |
633 | LPBYTE lpval; | |
634 | DWORD dwType; | |
f332b293 | 635 | |
480b0c5b GV |
636 | static char * env_vars[] = |
637 | { | |
638 | "HOME", | |
f249a012 | 639 | "PRELOAD_WINSOCK", |
480b0c5b GV |
640 | "emacs_dir", |
641 | "EMACSLOADPATH", | |
642 | "SHELL", | |
76b3903d | 643 | "CMDPROXY", |
480b0c5b GV |
644 | "EMACSDATA", |
645 | "EMACSPATH", | |
646 | "EMACSLOCKDIR", | |
76b3903d GV |
647 | /* We no longer set INFOPATH because Info-default-directory-list |
648 | is then ignored. We use a hook in winnt.el instead. */ | |
649 | /* "INFOPATH", */ | |
480b0c5b GV |
650 | "EMACSDOC", |
651 | "TERM", | |
652 | }; | |
653 | ||
654 | for (i = 0; i < (sizeof (env_vars) / sizeof (env_vars[0])); i++) | |
f332b293 | 655 | { |
76b3903d GV |
656 | if (!getenv (env_vars[i]) |
657 | && (lpval = w32_get_resource (env_vars[i], &dwType)) != NULL) | |
480b0c5b GV |
658 | { |
659 | if (dwType == REG_EXPAND_SZ) | |
660 | { | |
661 | char buf1[500], buf2[500]; | |
662 | ||
663 | ExpandEnvironmentStrings ((LPSTR) lpval, buf1, 500); | |
664 | _snprintf (buf2, 499, "%s=%s", env_vars[i], buf1); | |
665 | putenv (strdup (buf2)); | |
666 | } | |
667 | else if (dwType == REG_SZ) | |
668 | { | |
669 | char buf[500]; | |
f332b293 | 670 | |
480b0c5b GV |
671 | _snprintf (buf, 499, "%s=%s", env_vars[i], lpval); |
672 | putenv (strdup (buf)); | |
673 | } | |
f332b293 | 674 | |
480b0c5b GV |
675 | xfree (lpval); |
676 | } | |
677 | } | |
678 | } | |
679 | ||
75b08edb GV |
680 | /* Rebuild system configuration to reflect invoking system. */ |
681 | Vsystem_configuration = build_string (EMACS_CONFIGURATION); | |
682 | ||
76b3903d GV |
683 | /* Another special case: on NT, the PATH variable is actually named |
684 | "Path" although cmd.exe (perhaps NT itself) arranges for | |
685 | environment variable lookup and setting to be case insensitive. | |
686 | However, Emacs assumes a fully case sensitive environment, so we | |
687 | need to change "Path" to "PATH" to match the expectations of | |
688 | various elisp packages. We do this by the sneaky method of | |
689 | modifying the string in the C runtime environ entry. | |
690 | ||
691 | The same applies to COMSPEC. */ | |
692 | { | |
693 | char ** envp; | |
694 | ||
695 | for (envp = environ; *envp; envp++) | |
696 | if (_strnicmp (*envp, "PATH=", 5) == 0) | |
697 | memcpy (*envp, "PATH=", 5); | |
698 | else if (_strnicmp (*envp, "COMSPEC=", 8) == 0) | |
699 | memcpy (*envp, "COMSPEC=", 8); | |
700 | } | |
701 | ||
702 | /* Remember the initial working directory for getwd, then make the | |
703 | real wd be the location of emacs.exe to avoid conflicts when | |
704 | renaming or deleting directories. (We also don't call chdir when | |
705 | running subprocesses for the same reason.) */ | |
706 | if (!GetCurrentDirectory (MAXPATHLEN, startup_dir)) | |
707 | abort (); | |
708 | ||
709 | { | |
710 | char *p; | |
711 | char modname[MAX_PATH]; | |
712 | ||
713 | if (!GetModuleFileName (NULL, modname, MAX_PATH)) | |
714 | abort (); | |
715 | if ((p = strrchr (modname, '\\')) == NULL) | |
716 | abort (); | |
717 | *p = 0; | |
718 | ||
719 | SetCurrentDirectory (modname); | |
720 | } | |
721 | ||
480b0c5b GV |
722 | init_user_info (); |
723 | } | |
724 | ||
725 | /* We don't have scripts to automatically determine the system configuration | |
726 | for Emacs before it's compiled, and we don't want to have to make the | |
727 | user enter it, so we define EMACS_CONFIGURATION to invoke this runtime | |
728 | routine. */ | |
729 | ||
730 | static char configuration_buffer[32]; | |
731 | ||
732 | char * | |
733 | get_emacs_configuration (void) | |
734 | { | |
735 | char *arch, *oem, *os; | |
736 | ||
737 | /* Determine the processor type. */ | |
738 | switch (get_processor_type ()) | |
739 | { | |
740 | ||
741 | #ifdef PROCESSOR_INTEL_386 | |
742 | case PROCESSOR_INTEL_386: | |
743 | case PROCESSOR_INTEL_486: | |
744 | case PROCESSOR_INTEL_PENTIUM: | |
745 | arch = "i386"; | |
746 | break; | |
747 | #endif | |
748 | ||
749 | #ifdef PROCESSOR_INTEL_860 | |
750 | case PROCESSOR_INTEL_860: | |
751 | arch = "i860"; | |
752 | break; | |
753 | #endif | |
754 | ||
755 | #ifdef PROCESSOR_MIPS_R2000 | |
756 | case PROCESSOR_MIPS_R2000: | |
757 | case PROCESSOR_MIPS_R3000: | |
758 | case PROCESSOR_MIPS_R4000: | |
759 | arch = "mips"; | |
760 | break; | |
761 | #endif | |
762 | ||
763 | #ifdef PROCESSOR_ALPHA_21064 | |
764 | case PROCESSOR_ALPHA_21064: | |
765 | arch = "alpha"; | |
766 | break; | |
767 | #endif | |
768 | ||
769 | default: | |
770 | arch = "unknown"; | |
771 | break; | |
f332b293 | 772 | } |
480b0c5b GV |
773 | |
774 | /* Let oem be "*" until we figure out how to decode the OEM field. */ | |
775 | oem = "*"; | |
776 | ||
76b3903d | 777 | os = (GetVersion () & OS_WIN95) ? "windows95" : "nt"; |
480b0c5b GV |
778 | |
779 | sprintf (configuration_buffer, "%s-%s-%s%d.%d", arch, oem, os, | |
fbd6baed | 780 | get_w32_major_version (), get_w32_minor_version ()); |
480b0c5b | 781 | return configuration_buffer; |
f332b293 GV |
782 | } |
783 | ||
35f0d482 KH |
784 | #include <sys/timeb.h> |
785 | ||
786 | /* Emulate gettimeofday (Ulrich Leodolter, 1/11/95). */ | |
787 | void | |
788 | gettimeofday (struct timeval *tv, struct timezone *tz) | |
789 | { | |
790 | struct _timeb tb; | |
791 | _ftime (&tb); | |
792 | ||
793 | tv->tv_sec = tb.time; | |
794 | tv->tv_usec = tb.millitm * 1000L; | |
795 | if (tz) | |
796 | { | |
797 | tz->tz_minuteswest = tb.timezone; /* minutes west of Greenwich */ | |
798 | tz->tz_dsttime = tb.dstflag; /* type of dst correction */ | |
799 | } | |
800 | } | |
35f0d482 | 801 | |
480b0c5b | 802 | /* ------------------------------------------------------------------------- */ |
fbd6baed | 803 | /* IO support and wrapper functions for W32 API. */ |
480b0c5b | 804 | /* ------------------------------------------------------------------------- */ |
95ed0025 | 805 | |
480b0c5b GV |
806 | /* Place a wrapper around the MSVC version of ctime. It returns NULL |
807 | on network directories, so we handle that case here. | |
808 | (Ulrich Leodolter, 1/11/95). */ | |
809 | char * | |
810 | sys_ctime (const time_t *t) | |
811 | { | |
812 | char *str = (char *) ctime (t); | |
813 | return (str ? str : "Sun Jan 01 00:00:00 1970"); | |
814 | } | |
815 | ||
816 | /* Emulate sleep...we could have done this with a define, but that | |
817 | would necessitate including windows.h in the files that used it. | |
818 | This is much easier. */ | |
819 | void | |
820 | sys_sleep (int seconds) | |
821 | { | |
822 | Sleep (seconds * 1000); | |
823 | } | |
824 | ||
76b3903d | 825 | /* Internal MSVC functions for low-level descriptor munging */ |
480b0c5b GV |
826 | extern int __cdecl _set_osfhnd (int fd, long h); |
827 | extern int __cdecl _free_osfhnd (int fd); | |
828 | ||
829 | /* parallel array of private info on file handles */ | |
830 | filedesc fd_info [ MAXDESC ]; | |
831 | ||
76b3903d GV |
832 | typedef struct volume_info_data { |
833 | struct volume_info_data * next; | |
834 | ||
835 | /* time when info was obtained */ | |
836 | DWORD timestamp; | |
837 | ||
838 | /* actual volume info */ | |
839 | char * root_dir; | |
480b0c5b GV |
840 | DWORD serialnum; |
841 | DWORD maxcomp; | |
842 | DWORD flags; | |
76b3903d GV |
843 | char * name; |
844 | char * type; | |
845 | } volume_info_data; | |
846 | ||
847 | /* Global referenced by various functions. */ | |
848 | static volume_info_data volume_info; | |
849 | ||
850 | /* Vector to indicate which drives are local and fixed (for which cached | |
851 | data never expires). */ | |
852 | static BOOL fixed_drives[26]; | |
853 | ||
854 | /* Consider cached volume information to be stale if older than 10s, | |
855 | at least for non-local drives. Info for fixed drives is never stale. */ | |
856 | #define DRIVE_INDEX( c ) ( (c) <= 'Z' ? (c) - 'A' : (c) - 'a' ) | |
857 | #define VOLINFO_STILL_VALID( root_dir, info ) \ | |
858 | ( ( isalpha (root_dir[0]) && \ | |
859 | fixed_drives[ DRIVE_INDEX (root_dir[0]) ] ) \ | |
860 | || GetTickCount () - info->timestamp < 10000 ) | |
861 | ||
862 | /* Cache support functions. */ | |
863 | ||
864 | /* Simple linked list with linear search is sufficient. */ | |
865 | static volume_info_data *volume_cache = NULL; | |
866 | ||
867 | static volume_info_data * | |
868 | lookup_volume_info (char * root_dir) | |
869 | { | |
870 | volume_info_data * info; | |
871 | ||
872 | for (info = volume_cache; info; info = info->next) | |
873 | if (stricmp (info->root_dir, root_dir) == 0) | |
874 | break; | |
875 | return info; | |
876 | } | |
877 | ||
878 | static void | |
879 | add_volume_info (char * root_dir, volume_info_data * info) | |
880 | { | |
881 | info->root_dir = strdup (root_dir); | |
882 | info->next = volume_cache; | |
883 | volume_cache = info; | |
884 | } | |
885 | ||
886 | ||
887 | /* Wrapper for GetVolumeInformation, which uses caching to avoid | |
888 | performance penalty (~2ms on 486 for local drives, 7.5ms for local | |
889 | cdrom drive, ~5-10ms or more for remote drives on LAN). */ | |
890 | volume_info_data * | |
891 | GetCachedVolumeInformation (char * root_dir) | |
892 | { | |
893 | volume_info_data * info; | |
894 | char default_root[ MAX_PATH ]; | |
895 | ||
896 | /* NULL for root_dir means use root from current directory. */ | |
897 | if (root_dir == NULL) | |
898 | { | |
899 | if (GetCurrentDirectory (MAX_PATH, default_root) == 0) | |
900 | return NULL; | |
901 | parse_root (default_root, &root_dir); | |
902 | *root_dir = 0; | |
903 | root_dir = default_root; | |
904 | } | |
905 | ||
906 | /* Local fixed drives can be cached permanently. Removable drives | |
907 | cannot be cached permanently, since the volume name and serial | |
908 | number (if nothing else) can change. Remote drives should be | |
909 | treated as if they are removable, since there is no sure way to | |
910 | tell whether they are or not. Also, the UNC association of drive | |
911 | letters mapped to remote volumes can be changed at any time (even | |
912 | by other processes) without notice. | |
913 | ||
914 | As a compromise, so we can benefit from caching info for remote | |
915 | volumes, we use a simple expiry mechanism to invalidate cache | |
916 | entries that are more than ten seconds old. */ | |
917 | ||
918 | #if 0 | |
919 | /* No point doing this, because WNetGetConnection is even slower than | |
920 | GetVolumeInformation, consistently taking ~50ms on a 486 (FWIW, | |
921 | GetDriveType is about the only call of this type which does not | |
922 | involve network access, and so is extremely quick). */ | |
923 | ||
924 | /* Map drive letter to UNC if remote. */ | |
925 | if ( isalpha( root_dir[0] ) && !fixed[ DRIVE_INDEX( root_dir[0] ) ] ) | |
926 | { | |
927 | char remote_name[ 256 ]; | |
928 | char drive[3] = { root_dir[0], ':' }; | |
929 | ||
930 | if (WNetGetConnection (drive, remote_name, sizeof (remote_name)) | |
931 | == NO_ERROR) | |
932 | /* do something */ ; | |
933 | } | |
934 | #endif | |
935 | ||
936 | info = lookup_volume_info (root_dir); | |
937 | ||
938 | if (info == NULL || ! VOLINFO_STILL_VALID (root_dir, info)) | |
939 | { | |
940 | char name[ 256 ]; | |
941 | DWORD serialnum; | |
942 | DWORD maxcomp; | |
943 | DWORD flags; | |
944 | char type[ 256 ]; | |
945 | ||
946 | /* Info is not cached, or is stale. */ | |
947 | if (!GetVolumeInformation (root_dir, | |
948 | name, sizeof (name), | |
949 | &serialnum, | |
950 | &maxcomp, | |
951 | &flags, | |
952 | type, sizeof (type))) | |
953 | return NULL; | |
954 | ||
955 | /* Cache the volume information for future use, overwriting existing | |
956 | entry if present. */ | |
957 | if (info == NULL) | |
958 | { | |
959 | info = (volume_info_data *) xmalloc (sizeof (volume_info_data)); | |
960 | add_volume_info (root_dir, info); | |
961 | } | |
962 | else | |
963 | { | |
964 | free (info->name); | |
965 | free (info->type); | |
966 | } | |
967 | ||
968 | info->name = strdup (name); | |
969 | info->serialnum = serialnum; | |
970 | info->maxcomp = maxcomp; | |
971 | info->flags = flags; | |
972 | info->type = strdup (type); | |
973 | info->timestamp = GetTickCount (); | |
974 | } | |
975 | ||
976 | return info; | |
977 | } | |
480b0c5b GV |
978 | |
979 | /* Get information on the volume where name is held; set path pointer to | |
980 | start of pathname in name (past UNC header\volume header if present). */ | |
981 | int | |
982 | get_volume_info (const char * name, const char ** pPath) | |
95ed0025 | 983 | { |
480b0c5b GV |
984 | char temp[MAX_PATH]; |
985 | char *rootname = NULL; /* default to current volume */ | |
76b3903d | 986 | volume_info_data * info; |
480b0c5b GV |
987 | |
988 | if (name == NULL) | |
989 | return FALSE; | |
990 | ||
991 | /* find the root name of the volume if given */ | |
992 | if (isalpha (name[0]) && name[1] == ':') | |
993 | { | |
994 | rootname = temp; | |
995 | temp[0] = *name++; | |
996 | temp[1] = *name++; | |
997 | temp[2] = '\\'; | |
998 | temp[3] = 0; | |
999 | } | |
1000 | else if (IS_DIRECTORY_SEP (name[0]) && IS_DIRECTORY_SEP (name[1])) | |
95ed0025 | 1001 | { |
480b0c5b GV |
1002 | char *str = temp; |
1003 | int slashes = 4; | |
1004 | rootname = temp; | |
1005 | do | |
1006 | { | |
1007 | if (IS_DIRECTORY_SEP (*name) && --slashes == 0) | |
1008 | break; | |
1009 | *str++ = *name++; | |
1010 | } | |
1011 | while ( *name ); | |
1012 | ||
480b0c5b GV |
1013 | *str++ = '\\'; |
1014 | *str = 0; | |
95ed0025 | 1015 | } |
480b0c5b GV |
1016 | |
1017 | if (pPath) | |
1018 | *pPath = name; | |
1019 | ||
76b3903d GV |
1020 | info = GetCachedVolumeInformation (rootname); |
1021 | if (info != NULL) | |
95ed0025 | 1022 | { |
76b3903d GV |
1023 | /* Set global referenced by other functions. */ |
1024 | volume_info = *info; | |
480b0c5b | 1025 | return TRUE; |
95ed0025 | 1026 | } |
480b0c5b GV |
1027 | return FALSE; |
1028 | } | |
1029 | ||
1030 | /* Determine if volume is FAT format (ie. only supports short 8.3 | |
1031 | names); also set path pointer to start of pathname in name. */ | |
1032 | int | |
1033 | is_fat_volume (const char * name, const char ** pPath) | |
1034 | { | |
1035 | if (get_volume_info (name, pPath)) | |
1036 | return (volume_info.maxcomp == 12); | |
1037 | return FALSE; | |
1038 | } | |
1039 | ||
1040 | /* Map filename to a legal 8.3 name if necessary. */ | |
1041 | const char * | |
fbd6baed | 1042 | map_w32_filename (const char * name, const char ** pPath) |
480b0c5b GV |
1043 | { |
1044 | static char shortname[MAX_PATH]; | |
1045 | char * str = shortname; | |
1046 | char c; | |
480b0c5b | 1047 | char * path; |
76b3903d | 1048 | const char * save_name = name; |
480b0c5b GV |
1049 | |
1050 | if (is_fat_volume (name, &path)) /* truncate to 8.3 */ | |
95ed0025 | 1051 | { |
480b0c5b GV |
1052 | register int left = 8; /* maximum number of chars in part */ |
1053 | register int extn = 0; /* extension added? */ | |
1054 | register int dots = 2; /* maximum number of dots allowed */ | |
1055 | ||
1056 | while (name < path) | |
1057 | *str++ = *name++; /* skip past UNC header */ | |
1058 | ||
1059 | while ((c = *name++)) | |
1060 | { | |
1061 | switch ( c ) | |
1062 | { | |
1063 | case '\\': | |
1064 | case '/': | |
1065 | *str++ = '\\'; | |
1066 | extn = 0; /* reset extension flags */ | |
1067 | dots = 2; /* max 2 dots */ | |
1068 | left = 8; /* max length 8 for main part */ | |
1069 | break; | |
1070 | case ':': | |
1071 | *str++ = ':'; | |
1072 | extn = 0; /* reset extension flags */ | |
1073 | dots = 2; /* max 2 dots */ | |
1074 | left = 8; /* max length 8 for main part */ | |
1075 | break; | |
1076 | case '.': | |
1077 | if ( dots ) | |
1078 | { | |
1079 | /* Convert path components of the form .xxx to _xxx, | |
1080 | but leave . and .. as they are. This allows .emacs | |
1081 | to be read as _emacs, for example. */ | |
1082 | ||
1083 | if (! *name || | |
1084 | *name == '.' || | |
1085 | IS_DIRECTORY_SEP (*name)) | |
1086 | { | |
1087 | *str++ = '.'; | |
1088 | dots--; | |
1089 | } | |
1090 | else | |
1091 | { | |
1092 | *str++ = '_'; | |
1093 | left--; | |
1094 | dots = 0; | |
1095 | } | |
1096 | } | |
1097 | else if ( !extn ) | |
1098 | { | |
1099 | *str++ = '.'; | |
1100 | extn = 1; /* we've got an extension */ | |
1101 | left = 3; /* 3 chars in extension */ | |
1102 | } | |
1103 | else | |
1104 | { | |
1105 | /* any embedded dots after the first are converted to _ */ | |
1106 | *str++ = '_'; | |
1107 | } | |
1108 | break; | |
1109 | case '~': | |
1110 | case '#': /* don't lose these, they're important */ | |
1111 | if ( ! left ) | |
1112 | str[-1] = c; /* replace last character of part */ | |
1113 | /* FALLTHRU */ | |
1114 | default: | |
1115 | if ( left ) | |
1116 | { | |
1117 | *str++ = tolower (c); /* map to lower case (looks nicer) */ | |
1118 | left--; | |
1119 | dots = 0; /* started a path component */ | |
1120 | } | |
1121 | break; | |
1122 | } | |
1123 | } | |
1124 | *str = '\0'; | |
fc85cb29 RS |
1125 | } |
1126 | else | |
1127 | { | |
1128 | strcpy (shortname, name); | |
1129 | unixtodos_filename (shortname); | |
95ed0025 | 1130 | } |
480b0c5b GV |
1131 | |
1132 | if (pPath) | |
76b3903d | 1133 | *pPath = shortname + (path - save_name); |
480b0c5b | 1134 | |
fc85cb29 | 1135 | return shortname; |
480b0c5b GV |
1136 | } |
1137 | ||
76b3903d GV |
1138 | /* Emulate the Unix directory procedures opendir, closedir, |
1139 | and readdir. We can't use the procedures supplied in sysdep.c, | |
1140 | so we provide them here. */ | |
1141 | ||
1142 | struct direct dir_static; /* simulated directory contents */ | |
1143 | static HANDLE dir_find_handle = INVALID_HANDLE_VALUE; | |
1144 | static int dir_is_fat; | |
1145 | static char dir_pathname[MAXPATHLEN+1]; | |
1146 | static WIN32_FIND_DATA dir_find_data; | |
1147 | ||
1148 | DIR * | |
1149 | opendir (char *filename) | |
1150 | { | |
1151 | DIR *dirp; | |
1152 | ||
1153 | /* Opening is done by FindFirstFile. However, a read is inherent to | |
1154 | this operation, so we defer the open until read time. */ | |
1155 | ||
1156 | if (!(dirp = (DIR *) malloc (sizeof (DIR)))) | |
1157 | return NULL; | |
1158 | if (dir_find_handle != INVALID_HANDLE_VALUE) | |
1159 | return NULL; | |
1160 | ||
1161 | dirp->dd_fd = 0; | |
1162 | dirp->dd_loc = 0; | |
1163 | dirp->dd_size = 0; | |
1164 | ||
1165 | strncpy (dir_pathname, map_w32_filename (filename, NULL), MAXPATHLEN); | |
1166 | dir_pathname[MAXPATHLEN] = '\0'; | |
1167 | dir_is_fat = is_fat_volume (filename, NULL); | |
1168 | ||
1169 | return dirp; | |
1170 | } | |
1171 | ||
1172 | void | |
1173 | closedir (DIR *dirp) | |
1174 | { | |
1175 | /* If we have a find-handle open, close it. */ | |
1176 | if (dir_find_handle != INVALID_HANDLE_VALUE) | |
1177 | { | |
1178 | FindClose (dir_find_handle); | |
1179 | dir_find_handle = INVALID_HANDLE_VALUE; | |
1180 | } | |
1181 | xfree ((char *) dirp); | |
1182 | } | |
1183 | ||
1184 | struct direct * | |
1185 | readdir (DIR *dirp) | |
1186 | { | |
1187 | /* If we aren't dir_finding, do a find-first, otherwise do a find-next. */ | |
1188 | if (dir_find_handle == INVALID_HANDLE_VALUE) | |
1189 | { | |
1190 | char filename[MAXNAMLEN + 3]; | |
1191 | int ln; | |
1192 | ||
1193 | strcpy (filename, dir_pathname); | |
1194 | ln = strlen (filename) - 1; | |
1195 | if (!IS_DIRECTORY_SEP (filename[ln])) | |
1196 | strcat (filename, "\\"); | |
1197 | strcat (filename, "*"); | |
1198 | ||
1199 | dir_find_handle = FindFirstFile (filename, &dir_find_data); | |
1200 | ||
1201 | if (dir_find_handle == INVALID_HANDLE_VALUE) | |
1202 | return NULL; | |
1203 | } | |
1204 | else | |
1205 | { | |
1206 | if (!FindNextFile (dir_find_handle, &dir_find_data)) | |
1207 | return NULL; | |
1208 | } | |
1209 | ||
1210 | /* Emacs never uses this value, so don't bother making it match | |
1211 | value returned by stat(). */ | |
1212 | dir_static.d_ino = 1; | |
1213 | ||
1214 | dir_static.d_reclen = sizeof (struct direct) - MAXNAMLEN + 3 + | |
1215 | dir_static.d_namlen - dir_static.d_namlen % 4; | |
1216 | ||
1217 | dir_static.d_namlen = strlen (dir_find_data.cFileName); | |
1218 | strcpy (dir_static.d_name, dir_find_data.cFileName); | |
1219 | if (dir_is_fat) | |
1220 | _strlwr (dir_static.d_name); | |
1221 | else if (!NILP (Vw32_downcase_file_names)) | |
1222 | { | |
1223 | register char *p; | |
1224 | for (p = dir_static.d_name; *p; p++) | |
1225 | if (*p >= 'a' && *p <= 'z') | |
1226 | break; | |
1227 | if (!*p) | |
1228 | _strlwr (dir_static.d_name); | |
1229 | } | |
1230 | ||
1231 | return &dir_static; | |
1232 | } | |
1233 | ||
480b0c5b GV |
1234 | |
1235 | /* Shadow some MSVC runtime functions to map requests for long filenames | |
1236 | to reasonable short names if necessary. This was originally added to | |
1237 | permit running Emacs on NT 3.1 on a FAT partition, which doesn't support | |
1238 | long file names. */ | |
1239 | ||
1240 | int | |
1241 | sys_access (const char * path, int mode) | |
1242 | { | |
fbd6baed | 1243 | return _access (map_w32_filename (path, NULL), mode); |
480b0c5b GV |
1244 | } |
1245 | ||
1246 | int | |
1247 | sys_chdir (const char * path) | |
1248 | { | |
fbd6baed | 1249 | return _chdir (map_w32_filename (path, NULL)); |
480b0c5b GV |
1250 | } |
1251 | ||
1252 | int | |
1253 | sys_chmod (const char * path, int mode) | |
1254 | { | |
fbd6baed | 1255 | return _chmod (map_w32_filename (path, NULL), mode); |
480b0c5b GV |
1256 | } |
1257 | ||
1258 | int | |
1259 | sys_creat (const char * path, int mode) | |
1260 | { | |
fbd6baed | 1261 | return _creat (map_w32_filename (path, NULL), mode); |
480b0c5b GV |
1262 | } |
1263 | ||
1264 | FILE * | |
1265 | sys_fopen(const char * path, const char * mode) | |
1266 | { | |
1267 | int fd; | |
1268 | int oflag; | |
1269 | const char * mode_save = mode; | |
1270 | ||
1271 | /* Force all file handles to be non-inheritable. This is necessary to | |
1272 | ensure child processes don't unwittingly inherit handles that might | |
1273 | prevent future file access. */ | |
1274 | ||
1275 | if (mode[0] == 'r') | |
1276 | oflag = O_RDONLY; | |
1277 | else if (mode[0] == 'w' || mode[0] == 'a') | |
1278 | oflag = O_WRONLY | O_CREAT | O_TRUNC; | |
95ed0025 | 1279 | else |
480b0c5b GV |
1280 | return NULL; |
1281 | ||
1282 | /* Only do simplistic option parsing. */ | |
1283 | while (*++mode) | |
1284 | if (mode[0] == '+') | |
1285 | { | |
1286 | oflag &= ~(O_RDONLY | O_WRONLY); | |
1287 | oflag |= O_RDWR; | |
1288 | } | |
1289 | else if (mode[0] == 'b') | |
1290 | { | |
1291 | oflag &= ~O_TEXT; | |
1292 | oflag |= O_BINARY; | |
1293 | } | |
1294 | else if (mode[0] == 't') | |
1295 | { | |
1296 | oflag &= ~O_BINARY; | |
1297 | oflag |= O_TEXT; | |
1298 | } | |
1299 | else break; | |
1300 | ||
fbd6baed | 1301 | fd = _open (map_w32_filename (path, NULL), oflag | _O_NOINHERIT, 0644); |
480b0c5b GV |
1302 | if (fd < 0) |
1303 | return NULL; | |
1304 | ||
76b3903d | 1305 | return _fdopen (fd, mode_save); |
95ed0025 | 1306 | } |
480b0c5b | 1307 | |
76b3903d | 1308 | /* This only works on NTFS volumes, but is useful to have. */ |
480b0c5b | 1309 | int |
76b3903d | 1310 | sys_link (const char * old, const char * new) |
480b0c5b | 1311 | { |
76b3903d GV |
1312 | HANDLE fileh; |
1313 | int result = -1; | |
1314 | char oldname[MAX_PATH], newname[MAX_PATH]; | |
1315 | ||
1316 | if (old == NULL || new == NULL) | |
1317 | { | |
1318 | errno = ENOENT; | |
1319 | return -1; | |
1320 | } | |
1321 | ||
1322 | strcpy (oldname, map_w32_filename (old, NULL)); | |
1323 | strcpy (newname, map_w32_filename (new, NULL)); | |
1324 | ||
1325 | fileh = CreateFile (oldname, 0, 0, NULL, OPEN_EXISTING, | |
1326 | FILE_FLAG_BACKUP_SEMANTICS, NULL); | |
1327 | if (fileh != INVALID_HANDLE_VALUE) | |
1328 | { | |
1329 | int wlen; | |
1330 | ||
1331 | /* Confusingly, the "alternate" stream name field does not apply | |
1332 | when restoring a hard link, and instead contains the actual | |
1333 | stream data for the link (ie. the name of the link to create). | |
1334 | The WIN32_STREAM_ID structure before the cStreamName field is | |
1335 | the stream header, which is then immediately followed by the | |
1336 | stream data. */ | |
1337 | ||
1338 | struct { | |
1339 | WIN32_STREAM_ID wid; | |
1340 | WCHAR wbuffer[MAX_PATH]; /* extra space for link name */ | |
1341 | } data; | |
1342 | ||
1343 | wlen = MultiByteToWideChar (CP_ACP, MB_PRECOMPOSED, newname, -1, | |
1344 | data.wid.cStreamName, MAX_PATH); | |
1345 | if (wlen > 0) | |
1346 | { | |
1347 | LPVOID context = NULL; | |
1348 | DWORD wbytes = 0; | |
1349 | ||
1350 | data.wid.dwStreamId = BACKUP_LINK; | |
1351 | data.wid.dwStreamAttributes = 0; | |
1352 | data.wid.Size.LowPart = wlen * sizeof(WCHAR); | |
1353 | data.wid.Size.HighPart = 0; | |
1354 | data.wid.dwStreamNameSize = 0; | |
1355 | ||
1356 | if (BackupWrite (fileh, (LPBYTE)&data, | |
1357 | offsetof (WIN32_STREAM_ID, cStreamName) | |
1358 | + data.wid.Size.LowPart, | |
1359 | &wbytes, FALSE, FALSE, &context) | |
1360 | && BackupWrite (fileh, NULL, 0, &wbytes, TRUE, FALSE, &context)) | |
1361 | { | |
1362 | /* succeeded */ | |
1363 | result = 0; | |
1364 | } | |
1365 | else | |
1366 | { | |
1367 | /* Should try mapping GetLastError to errno; for now just | |
1368 | indicate a general error (eg. links not supported). */ | |
1369 | errno = EINVAL; // perhaps EMLINK? | |
1370 | } | |
1371 | } | |
1372 | ||
1373 | CloseHandle (fileh); | |
1374 | } | |
1375 | else | |
1376 | errno = ENOENT; | |
1377 | ||
1378 | return result; | |
480b0c5b GV |
1379 | } |
1380 | ||
1381 | int | |
1382 | sys_mkdir (const char * path) | |
1383 | { | |
fbd6baed | 1384 | return _mkdir (map_w32_filename (path, NULL)); |
480b0c5b GV |
1385 | } |
1386 | ||
9d1778b1 RS |
1387 | /* Because of long name mapping issues, we need to implement this |
1388 | ourselves. Also, MSVC's _mktemp returns NULL when it can't generate | |
1389 | a unique name, instead of setting the input template to an empty | |
1390 | string. | |
1391 | ||
1392 | Standard algorithm seems to be use pid or tid with a letter on the | |
1393 | front (in place of the 6 X's) and cycle through the letters to find a | |
1394 | unique name. We extend that to allow any reasonable character as the | |
1395 | first of the 6 X's. */ | |
480b0c5b GV |
1396 | char * |
1397 | sys_mktemp (char * template) | |
1398 | { | |
9d1778b1 RS |
1399 | char * p; |
1400 | int i; | |
1401 | unsigned uid = GetCurrentThreadId (); | |
1402 | static char first_char[] = "abcdefghijklmnopqrstuvwyz0123456789!%-_@#"; | |
1403 | ||
1404 | if (template == NULL) | |
1405 | return NULL; | |
1406 | p = template + strlen (template); | |
1407 | i = 5; | |
1408 | /* replace up to the last 5 X's with uid in decimal */ | |
1409 | while (--p >= template && p[0] == 'X' && --i >= 0) | |
1410 | { | |
1411 | p[0] = '0' + uid % 10; | |
1412 | uid /= 10; | |
1413 | } | |
1414 | ||
1415 | if (i < 0 && p[0] == 'X') | |
1416 | { | |
1417 | i = 0; | |
1418 | do | |
1419 | { | |
1420 | int save_errno = errno; | |
1421 | p[0] = first_char[i]; | |
1422 | if (sys_access (template, 0) < 0) | |
1423 | { | |
1424 | errno = save_errno; | |
1425 | return template; | |
1426 | } | |
1427 | } | |
1428 | while (++i < sizeof (first_char)); | |
1429 | } | |
1430 | ||
1431 | /* Template is badly formed or else we can't generate a unique name, | |
1432 | so return empty string */ | |
1433 | template[0] = 0; | |
1434 | return template; | |
480b0c5b GV |
1435 | } |
1436 | ||
1437 | int | |
1438 | sys_open (const char * path, int oflag, int mode) | |
1439 | { | |
1440 | /* Force all file handles to be non-inheritable. */ | |
fbd6baed | 1441 | return _open (map_w32_filename (path, NULL), oflag | _O_NOINHERIT, mode); |
480b0c5b GV |
1442 | } |
1443 | ||
1444 | int | |
1445 | sys_rename (const char * oldname, const char * newname) | |
1446 | { | |
1447 | char temp[MAX_PATH]; | |
5162ffce | 1448 | DWORD attr; |
480b0c5b | 1449 | |
e9e23e23 | 1450 | /* MoveFile on Windows 95 doesn't correctly change the short file name |
5162ffce MB |
1451 | alias in a number of circumstances (it is not easy to predict when |
1452 | just by looking at oldname and newname, unfortunately). In these | |
1453 | cases, renaming through a temporary name avoids the problem. | |
1454 | ||
e9e23e23 | 1455 | A second problem on Windows 95 is that renaming through a temp name when |
5162ffce MB |
1456 | newname is uppercase fails (the final long name ends up in |
1457 | lowercase, although the short alias might be uppercase) UNLESS the | |
1458 | long temp name is not 8.3. | |
1459 | ||
e9e23e23 | 1460 | So, on Windows 95 we always rename through a temp name, and we make sure |
5162ffce | 1461 | the temp name has a long extension to ensure correct renaming. */ |
480b0c5b | 1462 | |
fbd6baed | 1463 | strcpy (temp, map_w32_filename (oldname, NULL)); |
480b0c5b | 1464 | |
76b3903d | 1465 | if (os_subtype == OS_WIN95) |
480b0c5b GV |
1466 | { |
1467 | char * p; | |
1468 | ||
480b0c5b GV |
1469 | if (p = strrchr (temp, '\\')) |
1470 | p++; | |
1471 | else | |
1472 | p = temp; | |
5162ffce MB |
1473 | /* Force temp name to require a manufactured 8.3 alias - this |
1474 | seems to make the second rename work properly. */ | |
76b3903d GV |
1475 | strcpy (p, "_rename_temp.XXXXXX"); |
1476 | sys_mktemp (temp); | |
fbd6baed | 1477 | if (rename (map_w32_filename (oldname, NULL), temp) < 0) |
480b0c5b GV |
1478 | return -1; |
1479 | } | |
1480 | ||
1481 | /* Emulate Unix behaviour - newname is deleted if it already exists | |
5162ffce MB |
1482 | (at least if it is a file; don't do this for directories). |
1483 | However, don't do this if we are just changing the case of the file | |
1484 | name - we will end up deleting the file we are trying to rename! */ | |
fbd6baed | 1485 | newname = map_w32_filename (newname, NULL); |
76b3903d GV |
1486 | |
1487 | /* TODO: Use GetInformationByHandle (on NT) to ensure newname and temp | |
1488 | do not refer to the same file, eg. through share aliases. */ | |
5162ffce MB |
1489 | if (stricmp (newname, temp) != 0 |
1490 | && (attr = GetFileAttributes (newname)) != -1 | |
1491 | && (attr & FILE_ATTRIBUTE_DIRECTORY) == 0) | |
480b0c5b GV |
1492 | { |
1493 | _chmod (newname, 0666); | |
1494 | _unlink (newname); | |
1495 | } | |
1496 | ||
1497 | return rename (temp, newname); | |
1498 | } | |
1499 | ||
1500 | int | |
1501 | sys_rmdir (const char * path) | |
1502 | { | |
fbd6baed | 1503 | return _rmdir (map_w32_filename (path, NULL)); |
480b0c5b GV |
1504 | } |
1505 | ||
1506 | int | |
1507 | sys_unlink (const char * path) | |
1508 | { | |
16bb7578 GV |
1509 | path = map_w32_filename (path, NULL); |
1510 | ||
1511 | /* On Unix, unlink works without write permission. */ | |
1512 | _chmod (path, 0666); | |
1513 | return _unlink (path); | |
480b0c5b GV |
1514 | } |
1515 | ||
1516 | static FILETIME utc_base_ft; | |
1517 | static long double utc_base; | |
1518 | static int init = 0; | |
1519 | ||
1520 | static time_t | |
1521 | convert_time (FILETIME ft) | |
1522 | { | |
1523 | long double ret; | |
1524 | ||
1525 | if (!init) | |
1526 | { | |
1527 | /* Determine the delta between 1-Jan-1601 and 1-Jan-1970. */ | |
1528 | SYSTEMTIME st; | |
1529 | ||
1530 | st.wYear = 1970; | |
1531 | st.wMonth = 1; | |
1532 | st.wDay = 1; | |
1533 | st.wHour = 0; | |
1534 | st.wMinute = 0; | |
1535 | st.wSecond = 0; | |
1536 | st.wMilliseconds = 0; | |
1537 | ||
1538 | SystemTimeToFileTime (&st, &utc_base_ft); | |
1539 | utc_base = (long double) utc_base_ft.dwHighDateTime | |
1540 | * 4096 * 1024 * 1024 + utc_base_ft.dwLowDateTime; | |
1541 | init = 1; | |
1542 | } | |
1543 | ||
1544 | if (CompareFileTime (&ft, &utc_base_ft) < 0) | |
1545 | return 0; | |
1546 | ||
1547 | ret = (long double) ft.dwHighDateTime * 4096 * 1024 * 1024 + ft.dwLowDateTime; | |
1548 | ret -= utc_base; | |
1549 | return (time_t) (ret * 1e-7); | |
1550 | } | |
1551 | ||
480b0c5b GV |
1552 | void |
1553 | convert_from_time_t (time_t time, FILETIME * pft) | |
1554 | { | |
1555 | long double tmp; | |
1556 | ||
1557 | if (!init) | |
1558 | { | |
1559 | /* Determine the delta between 1-Jan-1601 and 1-Jan-1970. */ | |
1560 | SYSTEMTIME st; | |
1561 | ||
1562 | st.wYear = 1970; | |
1563 | st.wMonth = 1; | |
1564 | st.wDay = 1; | |
1565 | st.wHour = 0; | |
1566 | st.wMinute = 0; | |
1567 | st.wSecond = 0; | |
1568 | st.wMilliseconds = 0; | |
1569 | ||
1570 | SystemTimeToFileTime (&st, &utc_base_ft); | |
1571 | utc_base = (long double) utc_base_ft.dwHighDateTime | |
1572 | * 4096 * 1024 * 1024 + utc_base_ft.dwLowDateTime; | |
1573 | init = 1; | |
1574 | } | |
1575 | ||
1576 | /* time in 100ns units since 1-Jan-1601 */ | |
1577 | tmp = (long double) time * 1e7 + utc_base; | |
1578 | pft->dwHighDateTime = (DWORD) (tmp / (4096.0 * 1024 * 1024)); | |
16bb7578 | 1579 | pft->dwLowDateTime = (DWORD) (tmp - (4096.0 * 1024 * 1024) * pft->dwHighDateTime); |
480b0c5b | 1580 | } |
480b0c5b | 1581 | |
76b3903d GV |
1582 | #if 0 |
1583 | /* No reason to keep this; faking inode values either by hashing or even | |
1584 | using the file index from GetInformationByHandle, is not perfect and | |
1585 | so by default Emacs doesn't use the inode values on Windows. | |
1586 | Instead, we now determine file-truename correctly (except for | |
1587 | possible drive aliasing etc). */ | |
1588 | ||
1589 | /* Modified version of "PJW" algorithm (see the "Dragon" compiler book). */ | |
480b0c5b | 1590 | static unsigned |
76b3903d | 1591 | hashval (const unsigned char * str) |
480b0c5b GV |
1592 | { |
1593 | unsigned h = 0; | |
480b0c5b GV |
1594 | while (*str) |
1595 | { | |
1596 | h = (h << 4) + *str++; | |
76b3903d | 1597 | h ^= (h >> 28); |
480b0c5b GV |
1598 | } |
1599 | return h; | |
1600 | } | |
1601 | ||
1602 | /* Return the hash value of the canonical pathname, excluding the | |
1603 | drive/UNC header, to get a hopefully unique inode number. */ | |
76b3903d | 1604 | static DWORD |
480b0c5b GV |
1605 | generate_inode_val (const char * name) |
1606 | { | |
1607 | char fullname[ MAX_PATH ]; | |
1608 | char * p; | |
1609 | unsigned hash; | |
1610 | ||
76b3903d GV |
1611 | /* Get the truly canonical filename, if it exists. (Note: this |
1612 | doesn't resolve aliasing due to subst commands, or recognise hard | |
1613 | links. */ | |
1614 | if (!w32_get_long_filename ((char *)name, fullname, MAX_PATH)) | |
1615 | abort (); | |
1616 | ||
1617 | parse_root (fullname, &p); | |
fbd6baed | 1618 | /* Normal W32 filesystems are still case insensitive. */ |
480b0c5b | 1619 | _strlwr (p); |
76b3903d | 1620 | return hashval (p); |
480b0c5b GV |
1621 | } |
1622 | ||
76b3903d GV |
1623 | #endif |
1624 | ||
480b0c5b GV |
1625 | /* MSVC stat function can't cope with UNC names and has other bugs, so |
1626 | replace it with our own. This also allows us to calculate consistent | |
1627 | inode values without hacks in the main Emacs code. */ | |
1628 | int | |
1629 | stat (const char * path, struct stat * buf) | |
1630 | { | |
1631 | char * name; | |
1632 | WIN32_FIND_DATA wfd; | |
1633 | HANDLE fh; | |
76b3903d | 1634 | DWORD fake_inode; |
480b0c5b GV |
1635 | int permission; |
1636 | int len; | |
1637 | int rootdir = FALSE; | |
1638 | ||
1639 | if (path == NULL || buf == NULL) | |
1640 | { | |
1641 | errno = EFAULT; | |
1642 | return -1; | |
1643 | } | |
1644 | ||
fbd6baed | 1645 | name = (char *) map_w32_filename (path, &path); |
bb1584c8 RS |
1646 | /* must be valid filename, no wild cards or other illegal characters */ |
1647 | if (strpbrk (name, "*?|<>\"")) | |
480b0c5b GV |
1648 | { |
1649 | errno = ENOENT; | |
1650 | return -1; | |
1651 | } | |
1652 | ||
1653 | /* Remove trailing directory separator, unless name is the root | |
1654 | directory of a drive or UNC volume in which case ensure there | |
1655 | is a trailing separator. */ | |
1656 | len = strlen (name); | |
1657 | rootdir = (path >= name + len - 1 | |
1658 | && (IS_DIRECTORY_SEP (*path) || *path == 0)); | |
1659 | name = strcpy (alloca (len + 2), name); | |
1660 | ||
1661 | if (rootdir) | |
1662 | { | |
1663 | if (!IS_DIRECTORY_SEP (name[len-1])) | |
1664 | strcat (name, "\\"); | |
1665 | if (GetDriveType (name) < 2) | |
1666 | { | |
1667 | errno = ENOENT; | |
1668 | return -1; | |
1669 | } | |
1670 | memset (&wfd, 0, sizeof (wfd)); | |
1671 | wfd.dwFileAttributes = FILE_ATTRIBUTE_DIRECTORY; | |
1672 | wfd.ftCreationTime = utc_base_ft; | |
1673 | wfd.ftLastAccessTime = utc_base_ft; | |
1674 | wfd.ftLastWriteTime = utc_base_ft; | |
1675 | strcpy (wfd.cFileName, name); | |
1676 | } | |
1677 | else | |
1678 | { | |
1679 | if (IS_DIRECTORY_SEP (name[len-1])) | |
1680 | name[len - 1] = 0; | |
76b3903d GV |
1681 | |
1682 | /* (This is hacky, but helps when doing file completions on | |
1683 | network drives.) Optimize by using information available from | |
1684 | active readdir if possible. */ | |
1685 | if (dir_find_handle != INVALID_HANDLE_VALUE | |
1686 | && (len = strlen (dir_pathname)), | |
1687 | strnicmp (name, dir_pathname, len) == 0 | |
1688 | && IS_DIRECTORY_SEP (name[len]) | |
1689 | && stricmp (name + len + 1, dir_static.d_name) == 0) | |
480b0c5b | 1690 | { |
76b3903d GV |
1691 | /* This was the last entry returned by readdir. */ |
1692 | wfd = dir_find_data; | |
1693 | } | |
1694 | else | |
1695 | { | |
1696 | fh = FindFirstFile (name, &wfd); | |
1697 | if (fh == INVALID_HANDLE_VALUE) | |
1698 | { | |
1699 | errno = ENOENT; | |
1700 | return -1; | |
1701 | } | |
1702 | FindClose (fh); | |
480b0c5b | 1703 | } |
480b0c5b GV |
1704 | } |
1705 | ||
1706 | if (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) | |
1707 | { | |
1708 | buf->st_mode = _S_IFDIR; | |
1709 | buf->st_nlink = 2; /* doesn't really matter */ | |
76b3903d | 1710 | fake_inode = 0; /* this doesn't either I think */ |
480b0c5b | 1711 | } |
76b3903d | 1712 | else if (!NILP (Vw32_get_true_file_attributes)) |
480b0c5b | 1713 | { |
480b0c5b GV |
1714 | /* This is more accurate in terms of gettting the correct number |
1715 | of links, but is quite slow (it is noticable when Emacs is | |
1716 | making a list of file name completions). */ | |
1717 | BY_HANDLE_FILE_INFORMATION info; | |
1718 | ||
76b3903d GV |
1719 | /* No access rights required to get info. */ |
1720 | fh = CreateFile (name, 0, 0, NULL, OPEN_EXISTING, 0, NULL); | |
480b0c5b GV |
1721 | |
1722 | if (GetFileInformationByHandle (fh, &info)) | |
1723 | { | |
1724 | switch (GetFileType (fh)) | |
1725 | { | |
1726 | case FILE_TYPE_DISK: | |
1727 | buf->st_mode = _S_IFREG; | |
1728 | break; | |
1729 | case FILE_TYPE_PIPE: | |
1730 | buf->st_mode = _S_IFIFO; | |
1731 | break; | |
1732 | case FILE_TYPE_CHAR: | |
1733 | case FILE_TYPE_UNKNOWN: | |
1734 | default: | |
1735 | buf->st_mode = _S_IFCHR; | |
1736 | } | |
1737 | buf->st_nlink = info.nNumberOfLinks; | |
76b3903d GV |
1738 | /* Might as well use file index to fake inode values, but this |
1739 | is not guaranteed to be unique unless we keep a handle open | |
1740 | all the time (even then there are situations where it is | |
1741 | not unique). Reputedly, there are at most 48 bits of info | |
1742 | (on NTFS, presumably less on FAT). */ | |
1743 | fake_inode = info.nFileIndexLow ^ info.nFileIndexHigh; | |
480b0c5b GV |
1744 | CloseHandle (fh); |
1745 | } | |
1746 | else | |
1747 | { | |
1748 | errno = EACCES; | |
1749 | return -1; | |
1750 | } | |
76b3903d GV |
1751 | } |
1752 | else | |
1753 | { | |
1754 | /* Don't bother to make this information more accurate. */ | |
480b0c5b GV |
1755 | buf->st_mode = _S_IFREG; |
1756 | buf->st_nlink = 1; | |
76b3903d GV |
1757 | fake_inode = 0; |
1758 | } | |
1759 | ||
1760 | #if 0 | |
1761 | /* Not sure if there is any point in this. */ | |
1762 | if (!NILP (Vw32_generate_fake_inodes)) | |
1763 | fake_inode = generate_inode_val (name); | |
1764 | else if (fake_inode == 0) | |
1765 | { | |
1766 | /* For want of something better, try to make everything unique. */ | |
1767 | static DWORD gen_num = 0; | |
1768 | fake_inode = ++gen_num; | |
480b0c5b | 1769 | } |
76b3903d GV |
1770 | #endif |
1771 | ||
1772 | /* MSVC defines _ino_t to be short; other libc's might not. */ | |
1773 | if (sizeof (buf->st_ino) == 2) | |
1774 | buf->st_ino = fake_inode ^ (fake_inode >> 16); | |
1775 | else | |
1776 | buf->st_ino = fake_inode; | |
480b0c5b GV |
1777 | |
1778 | /* consider files to belong to current user */ | |
1779 | buf->st_uid = the_passwd.pw_uid; | |
1780 | buf->st_gid = the_passwd.pw_gid; | |
1781 | ||
fbd6baed | 1782 | /* volume_info is set indirectly by map_w32_filename */ |
480b0c5b GV |
1783 | buf->st_dev = volume_info.serialnum; |
1784 | buf->st_rdev = volume_info.serialnum; | |
1785 | ||
480b0c5b GV |
1786 | |
1787 | buf->st_size = wfd.nFileSizeLow; | |
1788 | ||
1789 | /* Convert timestamps to Unix format. */ | |
1790 | buf->st_mtime = convert_time (wfd.ftLastWriteTime); | |
1791 | buf->st_atime = convert_time (wfd.ftLastAccessTime); | |
1792 | if (buf->st_atime == 0) buf->st_atime = buf->st_mtime; | |
1793 | buf->st_ctime = convert_time (wfd.ftCreationTime); | |
1794 | if (buf->st_ctime == 0) buf->st_ctime = buf->st_mtime; | |
1795 | ||
1796 | /* determine rwx permissions */ | |
1797 | if (wfd.dwFileAttributes & FILE_ATTRIBUTE_READONLY) | |
1798 | permission = _S_IREAD; | |
1799 | else | |
1800 | permission = _S_IREAD | _S_IWRITE; | |
1801 | ||
1802 | if (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) | |
1803 | permission |= _S_IEXEC; | |
1804 | else | |
1805 | { | |
1806 | char * p = strrchr (name, '.'); | |
76b3903d GV |
1807 | if (p != NULL |
1808 | && (stricmp (p, ".exe") == 0 || | |
1809 | stricmp (p, ".com") == 0 || | |
1810 | stricmp (p, ".bat") == 0 || | |
1811 | stricmp (p, ".cmd") == 0)) | |
480b0c5b GV |
1812 | permission |= _S_IEXEC; |
1813 | } | |
1814 | ||
1815 | buf->st_mode |= permission | (permission >> 3) | (permission >> 6); | |
1816 | ||
1817 | return 0; | |
1818 | } | |
1819 | ||
16bb7578 GV |
1820 | /* Provide fstat and utime as well as stat for consistent handling of |
1821 | file timestamps. */ | |
1822 | int | |
1823 | fstat (int desc, struct stat * buf) | |
1824 | { | |
1825 | HANDLE fh = (HANDLE) _get_osfhandle (desc); | |
1826 | BY_HANDLE_FILE_INFORMATION info; | |
1827 | DWORD fake_inode; | |
1828 | int permission; | |
1829 | ||
1830 | switch (GetFileType (fh) & ~FILE_TYPE_REMOTE) | |
1831 | { | |
1832 | case FILE_TYPE_DISK: | |
1833 | buf->st_mode = _S_IFREG; | |
1834 | if (!GetFileInformationByHandle (fh, &info)) | |
1835 | { | |
1836 | errno = EACCES; | |
1837 | return -1; | |
1838 | } | |
1839 | break; | |
1840 | case FILE_TYPE_PIPE: | |
1841 | buf->st_mode = _S_IFIFO; | |
1842 | goto non_disk; | |
1843 | case FILE_TYPE_CHAR: | |
1844 | case FILE_TYPE_UNKNOWN: | |
1845 | default: | |
1846 | buf->st_mode = _S_IFCHR; | |
1847 | non_disk: | |
1848 | memset (&info, 0, sizeof (info)); | |
1849 | info.dwFileAttributes = 0; | |
1850 | info.ftCreationTime = utc_base_ft; | |
1851 | info.ftLastAccessTime = utc_base_ft; | |
1852 | info.ftLastWriteTime = utc_base_ft; | |
1853 | } | |
1854 | ||
1855 | if (info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) | |
1856 | { | |
1857 | buf->st_mode = _S_IFDIR; | |
1858 | buf->st_nlink = 2; /* doesn't really matter */ | |
1859 | fake_inode = 0; /* this doesn't either I think */ | |
1860 | } | |
1861 | else | |
1862 | { | |
1863 | buf->st_nlink = info.nNumberOfLinks; | |
1864 | /* Might as well use file index to fake inode values, but this | |
1865 | is not guaranteed to be unique unless we keep a handle open | |
1866 | all the time (even then there are situations where it is | |
1867 | not unique). Reputedly, there are at most 48 bits of info | |
1868 | (on NTFS, presumably less on FAT). */ | |
1869 | fake_inode = info.nFileIndexLow ^ info.nFileIndexHigh; | |
1870 | } | |
1871 | ||
1872 | /* MSVC defines _ino_t to be short; other libc's might not. */ | |
1873 | if (sizeof (buf->st_ino) == 2) | |
1874 | buf->st_ino = fake_inode ^ (fake_inode >> 16); | |
1875 | else | |
1876 | buf->st_ino = fake_inode; | |
1877 | ||
1878 | /* consider files to belong to current user */ | |
1879 | buf->st_uid = 0; | |
1880 | buf->st_gid = 0; | |
1881 | ||
1882 | buf->st_dev = info.dwVolumeSerialNumber; | |
1883 | buf->st_rdev = info.dwVolumeSerialNumber; | |
1884 | ||
1885 | buf->st_size = info.nFileSizeLow; | |
1886 | ||
1887 | /* Convert timestamps to Unix format. */ | |
1888 | buf->st_mtime = convert_time (info.ftLastWriteTime); | |
1889 | buf->st_atime = convert_time (info.ftLastAccessTime); | |
1890 | if (buf->st_atime == 0) buf->st_atime = buf->st_mtime; | |
1891 | buf->st_ctime = convert_time (info.ftCreationTime); | |
1892 | if (buf->st_ctime == 0) buf->st_ctime = buf->st_mtime; | |
1893 | ||
1894 | /* determine rwx permissions */ | |
1895 | if (info.dwFileAttributes & FILE_ATTRIBUTE_READONLY) | |
1896 | permission = _S_IREAD; | |
1897 | else | |
1898 | permission = _S_IREAD | _S_IWRITE; | |
1899 | ||
1900 | if (info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) | |
1901 | permission |= _S_IEXEC; | |
1902 | else | |
1903 | { | |
1904 | #if 0 /* no way of knowing the filename */ | |
1905 | char * p = strrchr (name, '.'); | |
1906 | if (p != NULL && | |
1907 | (stricmp (p, ".exe") == 0 || | |
1908 | stricmp (p, ".com") == 0 || | |
1909 | stricmp (p, ".bat") == 0 || | |
1910 | stricmp (p, ".cmd") == 0)) | |
1911 | permission |= _S_IEXEC; | |
1912 | #endif | |
1913 | } | |
1914 | ||
1915 | buf->st_mode |= permission | (permission >> 3) | (permission >> 6); | |
1916 | ||
1917 | return 0; | |
1918 | } | |
1919 | ||
1920 | int | |
1921 | utime (const char *name, struct utimbuf *times) | |
1922 | { | |
1923 | struct utimbuf deftime; | |
1924 | HANDLE fh; | |
1925 | FILETIME mtime; | |
1926 | FILETIME atime; | |
1927 | ||
1928 | if (times == NULL) | |
1929 | { | |
1930 | deftime.modtime = deftime.actime = time (NULL); | |
1931 | times = &deftime; | |
1932 | } | |
1933 | ||
1934 | /* Need write access to set times. */ | |
1935 | fh = CreateFile (name, GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, | |
1936 | 0, OPEN_EXISTING, 0, NULL); | |
1937 | if (fh) | |
1938 | { | |
1939 | convert_from_time_t (times->actime, &atime); | |
1940 | convert_from_time_t (times->modtime, &mtime); | |
1941 | if (!SetFileTime (fh, NULL, &atime, &mtime)) | |
1942 | { | |
1943 | CloseHandle (fh); | |
1944 | errno = EACCES; | |
1945 | return -1; | |
1946 | } | |
1947 | CloseHandle (fh); | |
1948 | } | |
1949 | else | |
1950 | { | |
1951 | errno = EINVAL; | |
1952 | return -1; | |
1953 | } | |
1954 | return 0; | |
1955 | } | |
1956 | ||
480b0c5b GV |
1957 | #ifdef HAVE_SOCKETS |
1958 | ||
1959 | /* Wrappers for winsock functions to map between our file descriptors | |
1960 | and winsock's handles; also set h_errno for convenience. | |
1961 | ||
1962 | To allow Emacs to run on systems which don't have winsock support | |
1963 | installed, we dynamically link to winsock on startup if present, and | |
1964 | otherwise provide the minimum necessary functionality | |
1965 | (eg. gethostname). */ | |
1966 | ||
1967 | /* function pointers for relevant socket functions */ | |
1968 | int (PASCAL *pfn_WSAStartup) (WORD wVersionRequired, LPWSADATA lpWSAData); | |
1969 | void (PASCAL *pfn_WSASetLastError) (int iError); | |
1970 | int (PASCAL *pfn_WSAGetLastError) (void); | |
1971 | int (PASCAL *pfn_socket) (int af, int type, int protocol); | |
1972 | int (PASCAL *pfn_bind) (SOCKET s, const struct sockaddr *addr, int namelen); | |
1973 | int (PASCAL *pfn_connect) (SOCKET s, const struct sockaddr *addr, int namelen); | |
1974 | int (PASCAL *pfn_ioctlsocket) (SOCKET s, long cmd, u_long *argp); | |
1975 | int (PASCAL *pfn_recv) (SOCKET s, char * buf, int len, int flags); | |
1976 | int (PASCAL *pfn_send) (SOCKET s, const char * buf, int len, int flags); | |
1977 | int (PASCAL *pfn_closesocket) (SOCKET s); | |
1978 | int (PASCAL *pfn_shutdown) (SOCKET s, int how); | |
1979 | int (PASCAL *pfn_WSACleanup) (void); | |
1980 | ||
1981 | u_short (PASCAL *pfn_htons) (u_short hostshort); | |
1982 | u_short (PASCAL *pfn_ntohs) (u_short netshort); | |
1983 | unsigned long (PASCAL *pfn_inet_addr) (const char * cp); | |
1984 | int (PASCAL *pfn_gethostname) (char * name, int namelen); | |
1985 | struct hostent * (PASCAL *pfn_gethostbyname) (const char * name); | |
1986 | struct servent * (PASCAL *pfn_getservbyname) (const char * name, const char * proto); | |
f1614061 RS |
1987 | |
1988 | /* SetHandleInformation is only needed to make sockets non-inheritable. */ | |
1989 | BOOL (WINAPI *pfn_SetHandleInformation) (HANDLE object, DWORD mask, DWORD flags); | |
1990 | #ifndef HANDLE_FLAG_INHERIT | |
1991 | #define HANDLE_FLAG_INHERIT 1 | |
1992 | #endif | |
480b0c5b | 1993 | |
f249a012 RS |
1994 | HANDLE winsock_lib; |
1995 | static int winsock_inuse; | |
480b0c5b | 1996 | |
f249a012 | 1997 | BOOL |
480b0c5b GV |
1998 | term_winsock (void) |
1999 | { | |
f249a012 | 2000 | if (winsock_lib != NULL && winsock_inuse == 0) |
480b0c5b | 2001 | { |
f249a012 RS |
2002 | /* Not sure what would cause WSAENETDOWN, or even if it can happen |
2003 | after WSAStartup returns successfully, but it seems reasonable | |
2004 | to allow unloading winsock anyway in that case. */ | |
2005 | if (pfn_WSACleanup () == 0 || | |
2006 | pfn_WSAGetLastError () == WSAENETDOWN) | |
2007 | { | |
2008 | if (FreeLibrary (winsock_lib)) | |
2009 | winsock_lib = NULL; | |
2010 | return TRUE; | |
2011 | } | |
480b0c5b | 2012 | } |
f249a012 | 2013 | return FALSE; |
480b0c5b GV |
2014 | } |
2015 | ||
f249a012 RS |
2016 | BOOL |
2017 | init_winsock (int load_now) | |
480b0c5b GV |
2018 | { |
2019 | WSADATA winsockData; | |
2020 | ||
f249a012 RS |
2021 | if (winsock_lib != NULL) |
2022 | return TRUE; | |
f1614061 RS |
2023 | |
2024 | pfn_SetHandleInformation = NULL; | |
2025 | pfn_SetHandleInformation | |
2026 | = (void *) GetProcAddress (GetModuleHandle ("kernel32.dll"), | |
2027 | "SetHandleInformation"); | |
2028 | ||
480b0c5b GV |
2029 | winsock_lib = LoadLibrary ("wsock32.dll"); |
2030 | ||
2031 | if (winsock_lib != NULL) | |
2032 | { | |
2033 | /* dynamically link to socket functions */ | |
2034 | ||
2035 | #define LOAD_PROC(fn) \ | |
2036 | if ((pfn_##fn = (void *) GetProcAddress (winsock_lib, #fn)) == NULL) \ | |
2037 | goto fail; | |
2038 | ||
2039 | LOAD_PROC( WSAStartup ); | |
2040 | LOAD_PROC( WSASetLastError ); | |
2041 | LOAD_PROC( WSAGetLastError ); | |
2042 | LOAD_PROC( socket ); | |
2043 | LOAD_PROC( bind ); | |
2044 | LOAD_PROC( connect ); | |
2045 | LOAD_PROC( ioctlsocket ); | |
2046 | LOAD_PROC( recv ); | |
2047 | LOAD_PROC( send ); | |
2048 | LOAD_PROC( closesocket ); | |
2049 | LOAD_PROC( shutdown ); | |
2050 | LOAD_PROC( htons ); | |
2051 | LOAD_PROC( ntohs ); | |
2052 | LOAD_PROC( inet_addr ); | |
2053 | LOAD_PROC( gethostname ); | |
2054 | LOAD_PROC( gethostbyname ); | |
2055 | LOAD_PROC( getservbyname ); | |
2056 | LOAD_PROC( WSACleanup ); | |
2057 | ||
f249a012 RS |
2058 | #undef LOAD_PROC |
2059 | ||
480b0c5b GV |
2060 | /* specify version 1.1 of winsock */ |
2061 | if (pfn_WSAStartup (0x101, &winsockData) == 0) | |
2062 | { | |
f249a012 RS |
2063 | if (winsockData.wVersion != 0x101) |
2064 | goto fail; | |
2065 | ||
2066 | if (!load_now) | |
2067 | { | |
2068 | /* Report that winsock exists and is usable, but leave | |
2069 | socket functions disabled. I am assuming that calling | |
2070 | WSAStartup does not require any network interaction, | |
2071 | and in particular does not cause or require a dial-up | |
2072 | connection to be established. */ | |
2073 | ||
2074 | pfn_WSACleanup (); | |
2075 | FreeLibrary (winsock_lib); | |
2076 | winsock_lib = NULL; | |
2077 | } | |
2078 | winsock_inuse = 0; | |
2079 | return TRUE; | |
480b0c5b GV |
2080 | } |
2081 | ||
2082 | fail: | |
2083 | FreeLibrary (winsock_lib); | |
f249a012 | 2084 | winsock_lib = NULL; |
480b0c5b | 2085 | } |
f249a012 RS |
2086 | |
2087 | return FALSE; | |
480b0c5b GV |
2088 | } |
2089 | ||
2090 | ||
2091 | int h_errno = 0; | |
2092 | ||
2093 | /* function to set h_errno for compatability; map winsock error codes to | |
2094 | normal system codes where they overlap (non-overlapping definitions | |
2095 | are already in <sys/socket.h> */ | |
2096 | static void set_errno () | |
2097 | { | |
f249a012 | 2098 | if (winsock_lib == NULL) |
480b0c5b GV |
2099 | h_errno = EINVAL; |
2100 | else | |
2101 | h_errno = pfn_WSAGetLastError (); | |
2102 | ||
2103 | switch (h_errno) | |
2104 | { | |
2105 | case WSAEACCES: h_errno = EACCES; break; | |
2106 | case WSAEBADF: h_errno = EBADF; break; | |
2107 | case WSAEFAULT: h_errno = EFAULT; break; | |
2108 | case WSAEINTR: h_errno = EINTR; break; | |
2109 | case WSAEINVAL: h_errno = EINVAL; break; | |
2110 | case WSAEMFILE: h_errno = EMFILE; break; | |
2111 | case WSAENAMETOOLONG: h_errno = ENAMETOOLONG; break; | |
2112 | case WSAENOTEMPTY: h_errno = ENOTEMPTY; break; | |
2113 | } | |
2114 | errno = h_errno; | |
2115 | } | |
2116 | ||
2117 | static void check_errno () | |
2118 | { | |
f249a012 | 2119 | if (h_errno == 0 && winsock_lib != NULL) |
480b0c5b GV |
2120 | pfn_WSASetLastError (0); |
2121 | } | |
2122 | ||
2123 | /* [andrewi 3-May-96] I've had conflicting results using both methods, | |
2124 | but I believe the method of keeping the socket handle separate (and | |
2125 | insuring it is not inheritable) is the correct one. */ | |
2126 | ||
2127 | //#define SOCK_REPLACE_HANDLE | |
2128 | ||
2129 | #ifdef SOCK_REPLACE_HANDLE | |
2130 | #define SOCK_HANDLE(fd) ((SOCKET) _get_osfhandle (fd)) | |
2131 | #else | |
2132 | #define SOCK_HANDLE(fd) ((SOCKET) fd_info[fd].hnd) | |
2133 | #endif | |
2134 | ||
2135 | int | |
2136 | sys_socket(int af, int type, int protocol) | |
2137 | { | |
2138 | int fd; | |
2139 | long s; | |
2140 | child_process * cp; | |
2141 | ||
f249a012 | 2142 | if (winsock_lib == NULL) |
480b0c5b GV |
2143 | { |
2144 | h_errno = ENETDOWN; | |
2145 | return INVALID_SOCKET; | |
2146 | } | |
2147 | ||
2148 | check_errno (); | |
2149 | ||
2150 | /* call the real socket function */ | |
2151 | s = (long) pfn_socket (af, type, protocol); | |
2152 | ||
2153 | if (s != INVALID_SOCKET) | |
2154 | { | |
2155 | /* Although under NT 3.5 _open_osfhandle will accept a socket | |
2156 | handle, if opened with SO_OPENTYPE == SO_SYNCHRONOUS_NONALERT, | |
2157 | that does not work under NT 3.1. However, we can get the same | |
2158 | effect by using a backdoor function to replace an existing | |
2159 | descriptor handle with the one we want. */ | |
2160 | ||
2161 | /* allocate a file descriptor (with appropriate flags) */ | |
2162 | fd = _open ("NUL:", _O_RDWR); | |
2163 | if (fd >= 0) | |
2164 | { | |
2165 | #ifdef SOCK_REPLACE_HANDLE | |
2166 | /* now replace handle to NUL with our socket handle */ | |
2167 | CloseHandle ((HANDLE) _get_osfhandle (fd)); | |
2168 | _free_osfhnd (fd); | |
2169 | _set_osfhnd (fd, s); | |
2170 | /* setmode (fd, _O_BINARY); */ | |
2171 | #else | |
2172 | /* Make a non-inheritable copy of the socket handle. */ | |
2173 | { | |
2174 | HANDLE parent; | |
2175 | HANDLE new_s = INVALID_HANDLE_VALUE; | |
2176 | ||
2177 | parent = GetCurrentProcess (); | |
2178 | ||
f1614061 RS |
2179 | /* Apparently there is a bug in NT 3.51 with some service |
2180 | packs, which prevents using DuplicateHandle to make a | |
2181 | socket handle non-inheritable (causes WSACleanup to | |
2182 | hang). The work-around is to use SetHandleInformation | |
2183 | instead if it is available and implemented. */ | |
2184 | if (!pfn_SetHandleInformation | |
2185 | || !pfn_SetHandleInformation ((HANDLE) s, | |
2186 | HANDLE_FLAG_INHERIT, | |
caf1a172 | 2187 | 0)) |
f1614061 RS |
2188 | { |
2189 | DuplicateHandle (parent, | |
2190 | (HANDLE) s, | |
2191 | parent, | |
2192 | &new_s, | |
2193 | 0, | |
2194 | FALSE, | |
2195 | DUPLICATE_SAME_ACCESS); | |
2196 | pfn_closesocket (s); | |
2197 | s = (SOCKET) new_s; | |
2198 | } | |
2199 | fd_info[fd].hnd = (HANDLE) s; | |
480b0c5b GV |
2200 | } |
2201 | #endif | |
2202 | ||
2203 | /* set our own internal flags */ | |
2204 | fd_info[fd].flags = FILE_SOCKET | FILE_BINARY | FILE_READ | FILE_WRITE; | |
2205 | ||
2206 | cp = new_child (); | |
2207 | if (cp) | |
2208 | { | |
2209 | cp->fd = fd; | |
2210 | cp->status = STATUS_READ_ACKNOWLEDGED; | |
2211 | ||
2212 | /* attach child_process to fd_info */ | |
2213 | if (fd_info[ fd ].cp != NULL) | |
2214 | { | |
2215 | DebPrint (("sys_socket: fd_info[%d] apparently in use!\n", fd)); | |
2216 | abort (); | |
2217 | } | |
2218 | ||
2219 | fd_info[ fd ].cp = cp; | |
2220 | ||
2221 | /* success! */ | |
f249a012 | 2222 | winsock_inuse++; /* count open sockets */ |
480b0c5b GV |
2223 | return fd; |
2224 | } | |
2225 | ||
2226 | /* clean up */ | |
2227 | _close (fd); | |
2228 | } | |
2229 | pfn_closesocket (s); | |
2230 | h_errno = EMFILE; | |
2231 | } | |
2232 | set_errno (); | |
2233 | ||
2234 | return -1; | |
2235 | } | |
2236 | ||
2237 | ||
2238 | int | |
2239 | sys_bind (int s, const struct sockaddr * addr, int namelen) | |
2240 | { | |
f249a012 | 2241 | if (winsock_lib == NULL) |
480b0c5b GV |
2242 | { |
2243 | h_errno = ENOTSOCK; | |
2244 | return SOCKET_ERROR; | |
2245 | } | |
2246 | ||
2247 | check_errno (); | |
2248 | if (fd_info[s].flags & FILE_SOCKET) | |
2249 | { | |
2250 | int rc = pfn_bind (SOCK_HANDLE (s), addr, namelen); | |
2251 | if (rc == SOCKET_ERROR) | |
2252 | set_errno (); | |
2253 | return rc; | |
2254 | } | |
2255 | h_errno = ENOTSOCK; | |
2256 | return SOCKET_ERROR; | |
2257 | } | |
2258 | ||
2259 | ||
2260 | int | |
2261 | sys_connect (int s, const struct sockaddr * name, int namelen) | |
2262 | { | |
f249a012 | 2263 | if (winsock_lib == NULL) |
480b0c5b GV |
2264 | { |
2265 | h_errno = ENOTSOCK; | |
2266 | return SOCKET_ERROR; | |
2267 | } | |
2268 | ||
2269 | check_errno (); | |
2270 | if (fd_info[s].flags & FILE_SOCKET) | |
2271 | { | |
2272 | int rc = pfn_connect (SOCK_HANDLE (s), name, namelen); | |
2273 | if (rc == SOCKET_ERROR) | |
2274 | set_errno (); | |
2275 | return rc; | |
2276 | } | |
2277 | h_errno = ENOTSOCK; | |
2278 | return SOCKET_ERROR; | |
2279 | } | |
2280 | ||
2281 | u_short | |
2282 | sys_htons (u_short hostshort) | |
2283 | { | |
f249a012 | 2284 | return (winsock_lib != NULL) ? |
480b0c5b GV |
2285 | pfn_htons (hostshort) : hostshort; |
2286 | } | |
2287 | ||
2288 | u_short | |
2289 | sys_ntohs (u_short netshort) | |
2290 | { | |
f249a012 | 2291 | return (winsock_lib != NULL) ? |
480b0c5b GV |
2292 | pfn_ntohs (netshort) : netshort; |
2293 | } | |
2294 | ||
2295 | unsigned long | |
2296 | sys_inet_addr (const char * cp) | |
2297 | { | |
f249a012 | 2298 | return (winsock_lib != NULL) ? |
480b0c5b GV |
2299 | pfn_inet_addr (cp) : INADDR_NONE; |
2300 | } | |
2301 | ||
2302 | int | |
2303 | sys_gethostname (char * name, int namelen) | |
2304 | { | |
f249a012 | 2305 | if (winsock_lib != NULL) |
480b0c5b GV |
2306 | return pfn_gethostname (name, namelen); |
2307 | ||
2308 | if (namelen > MAX_COMPUTERNAME_LENGTH) | |
2309 | return !GetComputerName (name, &namelen); | |
2310 | ||
2311 | h_errno = EFAULT; | |
2312 | return SOCKET_ERROR; | |
2313 | } | |
2314 | ||
2315 | struct hostent * | |
2316 | sys_gethostbyname(const char * name) | |
2317 | { | |
2318 | struct hostent * host; | |
2319 | ||
f249a012 | 2320 | if (winsock_lib == NULL) |
480b0c5b GV |
2321 | { |
2322 | h_errno = ENETDOWN; | |
2323 | return NULL; | |
2324 | } | |
2325 | ||
2326 | check_errno (); | |
2327 | host = pfn_gethostbyname (name); | |
2328 | if (!host) | |
2329 | set_errno (); | |
2330 | return host; | |
2331 | } | |
2332 | ||
2333 | struct servent * | |
2334 | sys_getservbyname(const char * name, const char * proto) | |
2335 | { | |
2336 | struct servent * serv; | |
2337 | ||
f249a012 | 2338 | if (winsock_lib == NULL) |
480b0c5b GV |
2339 | { |
2340 | h_errno = ENETDOWN; | |
2341 | return NULL; | |
2342 | } | |
2343 | ||
2344 | check_errno (); | |
2345 | serv = pfn_getservbyname (name, proto); | |
2346 | if (!serv) | |
2347 | set_errno (); | |
2348 | return serv; | |
2349 | } | |
2350 | ||
380961a6 GV |
2351 | int |
2352 | sys_shutdown (int s, int how) | |
2353 | { | |
2354 | int rc; | |
2355 | ||
2356 | if (winsock_lib == NULL) | |
2357 | { | |
2358 | h_errno = ENETDOWN; | |
2359 | return SOCKET_ERROR; | |
2360 | } | |
2361 | ||
2362 | check_errno (); | |
2363 | if (fd_info[s].flags & FILE_SOCKET) | |
2364 | { | |
2365 | int rc = pfn_shutdown (SOCK_HANDLE (s), how); | |
2366 | if (rc == SOCKET_ERROR) | |
2367 | set_errno (); | |
2368 | return rc; | |
2369 | } | |
2370 | h_errno = ENOTSOCK; | |
2371 | return SOCKET_ERROR; | |
2372 | } | |
2373 | ||
480b0c5b GV |
2374 | #endif /* HAVE_SOCKETS */ |
2375 | ||
2376 | ||
2377 | /* Shadow main io functions: we need to handle pipes and sockets more | |
2378 | intelligently, and implement non-blocking mode as well. */ | |
2379 | ||
2380 | int | |
2381 | sys_close (int fd) | |
2382 | { | |
2383 | int rc; | |
2384 | ||
2385 | if (fd < 0 || fd >= MAXDESC) | |
2386 | { | |
2387 | errno = EBADF; | |
2388 | return -1; | |
2389 | } | |
2390 | ||
2391 | if (fd_info[fd].cp) | |
2392 | { | |
2393 | child_process * cp = fd_info[fd].cp; | |
2394 | ||
2395 | fd_info[fd].cp = NULL; | |
2396 | ||
2397 | if (CHILD_ACTIVE (cp)) | |
2398 | { | |
2399 | /* if last descriptor to active child_process then cleanup */ | |
2400 | int i; | |
2401 | for (i = 0; i < MAXDESC; i++) | |
2402 | { | |
2403 | if (i == fd) | |
2404 | continue; | |
2405 | if (fd_info[i].cp == cp) | |
2406 | break; | |
2407 | } | |
2408 | if (i == MAXDESC) | |
2409 | { | |
f249a012 | 2410 | #ifdef HAVE_SOCKETS |
480b0c5b GV |
2411 | if (fd_info[fd].flags & FILE_SOCKET) |
2412 | { | |
f249a012 RS |
2413 | #ifndef SOCK_REPLACE_HANDLE |
2414 | if (winsock_lib == NULL) abort (); | |
480b0c5b GV |
2415 | |
2416 | pfn_shutdown (SOCK_HANDLE (fd), 2); | |
2417 | rc = pfn_closesocket (SOCK_HANDLE (fd)); | |
f249a012 RS |
2418 | #endif |
2419 | winsock_inuse--; /* count open sockets */ | |
480b0c5b GV |
2420 | } |
2421 | #endif | |
2422 | delete_child (cp); | |
2423 | } | |
2424 | } | |
2425 | } | |
2426 | ||
2427 | /* Note that sockets do not need special treatment here (at least on | |
e9e23e23 | 2428 | NT and Windows 95 using the standard tcp/ip stacks) - it appears that |
480b0c5b GV |
2429 | closesocket is equivalent to CloseHandle, which is to be expected |
2430 | because socket handles are fully fledged kernel handles. */ | |
2431 | rc = _close (fd); | |
2432 | ||
2433 | if (rc == 0) | |
2434 | fd_info[fd].flags = 0; | |
2435 | ||
2436 | return rc; | |
2437 | } | |
2438 | ||
2439 | int | |
2440 | sys_dup (int fd) | |
2441 | { | |
2442 | int new_fd; | |
2443 | ||
2444 | new_fd = _dup (fd); | |
2445 | if (new_fd >= 0) | |
2446 | { | |
2447 | /* duplicate our internal info as well */ | |
2448 | fd_info[new_fd] = fd_info[fd]; | |
2449 | } | |
2450 | return new_fd; | |
2451 | } | |
2452 | ||
2453 | ||
2454 | int | |
2455 | sys_dup2 (int src, int dst) | |
2456 | { | |
2457 | int rc; | |
2458 | ||
2459 | if (dst < 0 || dst >= MAXDESC) | |
2460 | { | |
2461 | errno = EBADF; | |
2462 | return -1; | |
2463 | } | |
2464 | ||
2465 | /* make sure we close the destination first if it's a pipe or socket */ | |
2466 | if (src != dst && fd_info[dst].flags != 0) | |
2467 | sys_close (dst); | |
2468 | ||
2469 | rc = _dup2 (src, dst); | |
2470 | if (rc == 0) | |
2471 | { | |
2472 | /* duplicate our internal info as well */ | |
2473 | fd_info[dst] = fd_info[src]; | |
2474 | } | |
2475 | return rc; | |
2476 | } | |
2477 | ||
480b0c5b GV |
2478 | /* Unix pipe() has only one arg */ |
2479 | int | |
2480 | sys_pipe (int * phandles) | |
2481 | { | |
2482 | int rc; | |
2483 | unsigned flags; | |
2484 | child_process * cp; | |
2485 | ||
76b3903d GV |
2486 | /* make pipe handles non-inheritable; when we spawn a child, we |
2487 | replace the relevant handle with an inheritable one. Also put | |
2488 | pipes into binary mode; we will do text mode translation ourselves | |
2489 | if required. */ | |
2490 | rc = _pipe (phandles, 0, _O_NOINHERIT | _O_BINARY); | |
480b0c5b GV |
2491 | |
2492 | if (rc == 0) | |
2493 | { | |
7664e306 | 2494 | flags = FILE_PIPE | FILE_READ | FILE_BINARY; |
480b0c5b GV |
2495 | fd_info[phandles[0]].flags = flags; |
2496 | ||
7664e306 | 2497 | flags = FILE_PIPE | FILE_WRITE | FILE_BINARY; |
480b0c5b GV |
2498 | fd_info[phandles[1]].flags = flags; |
2499 | } | |
2500 | ||
2501 | return rc; | |
2502 | } | |
2503 | ||
f7554349 | 2504 | /* From ntproc.c */ |
fbd6baed | 2505 | extern Lisp_Object Vw32_pipe_read_delay; |
f7554349 | 2506 | |
480b0c5b GV |
2507 | /* Function to do blocking read of one byte, needed to implement |
2508 | select. It is only allowed on sockets and pipes. */ | |
2509 | int | |
2510 | _sys_read_ahead (int fd) | |
2511 | { | |
2512 | child_process * cp; | |
2513 | int rc; | |
2514 | ||
2515 | if (fd < 0 || fd >= MAXDESC) | |
2516 | return STATUS_READ_ERROR; | |
2517 | ||
2518 | cp = fd_info[fd].cp; | |
2519 | ||
2520 | if (cp == NULL || cp->fd != fd || cp->status != STATUS_READ_READY) | |
2521 | return STATUS_READ_ERROR; | |
2522 | ||
2523 | if ((fd_info[fd].flags & (FILE_PIPE | FILE_SOCKET)) == 0 | |
2524 | || (fd_info[fd].flags & FILE_READ) == 0) | |
2525 | { | |
2526 | DebPrint (("_sys_read_ahead: internal error: fd %d is not a pipe or socket!\n", fd)); | |
2527 | abort (); | |
2528 | } | |
2529 | ||
2530 | cp->status = STATUS_READ_IN_PROGRESS; | |
2531 | ||
2532 | if (fd_info[fd].flags & FILE_PIPE) | |
f7554349 | 2533 | { |
f7554349 KH |
2534 | rc = _read (fd, &cp->chr, sizeof (char)); |
2535 | ||
2536 | /* Give subprocess time to buffer some more output for us before | |
e9e23e23 | 2537 | reporting that input is available; we need this because Windows 95 |
f7554349 KH |
2538 | connects DOS programs to pipes by making the pipe appear to be |
2539 | the normal console stdout - as a result most DOS programs will | |
2540 | write to stdout without buffering, ie. one character at a | |
fbd6baed | 2541 | time. Even some W32 programs do this - "dir" in a command |
f7554349 KH |
2542 | shell on NT is very slow if we don't do this. */ |
2543 | if (rc > 0) | |
2544 | { | |
fbd6baed | 2545 | int wait = XINT (Vw32_pipe_read_delay); |
f7554349 KH |
2546 | |
2547 | if (wait > 0) | |
2548 | Sleep (wait); | |
2549 | else if (wait < 0) | |
2550 | while (++wait <= 0) | |
2551 | /* Yield remainder of our time slice, effectively giving a | |
2552 | temporary priority boost to the child process. */ | |
2553 | Sleep (0); | |
2554 | } | |
2555 | } | |
480b0c5b GV |
2556 | #ifdef HAVE_SOCKETS |
2557 | else if (fd_info[fd].flags & FILE_SOCKET) | |
2558 | rc = pfn_recv (SOCK_HANDLE (fd), &cp->chr, sizeof (char), 0); | |
2559 | #endif | |
2560 | ||
2561 | if (rc == sizeof (char)) | |
2562 | cp->status = STATUS_READ_SUCCEEDED; | |
2563 | else | |
2564 | cp->status = STATUS_READ_FAILED; | |
2565 | ||
2566 | return cp->status; | |
2567 | } | |
2568 | ||
2569 | int | |
2570 | sys_read (int fd, char * buffer, unsigned int count) | |
2571 | { | |
2572 | int nchars; | |
480b0c5b GV |
2573 | int to_read; |
2574 | DWORD waiting; | |
76b3903d | 2575 | char * orig_buffer = buffer; |
480b0c5b GV |
2576 | |
2577 | if (fd < 0 || fd >= MAXDESC) | |
2578 | { | |
2579 | errno = EBADF; | |
2580 | return -1; | |
2581 | } | |
2582 | ||
2583 | if (fd_info[fd].flags & (FILE_PIPE | FILE_SOCKET)) | |
2584 | { | |
2585 | child_process *cp = fd_info[fd].cp; | |
2586 | ||
2587 | if ((fd_info[fd].flags & FILE_READ) == 0) | |
2588 | { | |
2589 | errno = EBADF; | |
2590 | return -1; | |
2591 | } | |
2592 | ||
76b3903d GV |
2593 | nchars = 0; |
2594 | ||
2595 | /* re-read CR carried over from last read */ | |
2596 | if (fd_info[fd].flags & FILE_LAST_CR) | |
2597 | { | |
2598 | if (fd_info[fd].flags & FILE_BINARY) abort (); | |
2599 | *buffer++ = 0x0d; | |
2600 | count--; | |
2601 | nchars++; | |
f52eb3ef | 2602 | fd_info[fd].flags &= ~FILE_LAST_CR; |
76b3903d GV |
2603 | } |
2604 | ||
480b0c5b GV |
2605 | /* presence of a child_process structure means we are operating in |
2606 | non-blocking mode - otherwise we just call _read directly. | |
2607 | Note that the child_process structure might be missing because | |
2608 | reap_subprocess has been called; in this case the pipe is | |
2609 | already broken, so calling _read on it is okay. */ | |
2610 | if (cp) | |
2611 | { | |
2612 | int current_status = cp->status; | |
2613 | ||
2614 | switch (current_status) | |
2615 | { | |
2616 | case STATUS_READ_FAILED: | |
2617 | case STATUS_READ_ERROR: | |
f52eb3ef GV |
2618 | /* report normal EOF if nothing in buffer */ |
2619 | if (nchars <= 0) | |
2620 | fd_info[fd].flags |= FILE_AT_EOF; | |
2621 | return nchars; | |
480b0c5b GV |
2622 | |
2623 | case STATUS_READ_READY: | |
2624 | case STATUS_READ_IN_PROGRESS: | |
2625 | DebPrint (("sys_read called when read is in progress\n")); | |
2626 | errno = EWOULDBLOCK; | |
2627 | return -1; | |
2628 | ||
2629 | case STATUS_READ_SUCCEEDED: | |
2630 | /* consume read-ahead char */ | |
2631 | *buffer++ = cp->chr; | |
2632 | count--; | |
76b3903d | 2633 | nchars++; |
480b0c5b GV |
2634 | cp->status = STATUS_READ_ACKNOWLEDGED; |
2635 | ResetEvent (cp->char_avail); | |
2636 | ||
2637 | case STATUS_READ_ACKNOWLEDGED: | |
2638 | break; | |
2639 | ||
2640 | default: | |
2641 | DebPrint (("sys_read: bad status %d\n", current_status)); | |
2642 | errno = EBADF; | |
2643 | return -1; | |
2644 | } | |
2645 | ||
2646 | if (fd_info[fd].flags & FILE_PIPE) | |
2647 | { | |
2648 | PeekNamedPipe ((HANDLE) _get_osfhandle (fd), NULL, 0, NULL, &waiting, NULL); | |
2649 | to_read = min (waiting, (DWORD) count); | |
f52eb3ef GV |
2650 | |
2651 | if (to_read > 0) | |
2652 | nchars += _read (fd, buffer, to_read); | |
480b0c5b GV |
2653 | } |
2654 | #ifdef HAVE_SOCKETS | |
2655 | else /* FILE_SOCKET */ | |
2656 | { | |
f249a012 | 2657 | if (winsock_lib == NULL) abort (); |
480b0c5b GV |
2658 | |
2659 | /* do the equivalent of a non-blocking read */ | |
2660 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONREAD, &waiting); | |
76b3903d | 2661 | if (waiting == 0 && nchars == 0) |
480b0c5b GV |
2662 | { |
2663 | h_errno = errno = EWOULDBLOCK; | |
2664 | return -1; | |
2665 | } | |
2666 | ||
480b0c5b GV |
2667 | if (waiting) |
2668 | { | |
2669 | /* always use binary mode for sockets */ | |
76b3903d GV |
2670 | int res = pfn_recv (SOCK_HANDLE (fd), buffer, count, 0); |
2671 | if (res == SOCKET_ERROR) | |
480b0c5b GV |
2672 | { |
2673 | DebPrint(("sys_read.recv failed with error %d on socket %ld\n", | |
2674 | pfn_WSAGetLastError (), SOCK_HANDLE (fd))); | |
76b3903d GV |
2675 | set_errno (); |
2676 | return -1; | |
480b0c5b | 2677 | } |
76b3903d | 2678 | nchars += res; |
480b0c5b GV |
2679 | } |
2680 | } | |
2681 | #endif | |
2682 | } | |
2683 | else | |
f52eb3ef GV |
2684 | { |
2685 | int nread = _read (fd, buffer, count); | |
2686 | if (nread >= 0) | |
2687 | nchars += nread; | |
2688 | else if (nchars == 0) | |
2689 | nchars = nread; | |
2690 | } | |
76b3903d | 2691 | |
f52eb3ef GV |
2692 | if (nchars <= 0) |
2693 | fd_info[fd].flags |= FILE_AT_EOF; | |
76b3903d | 2694 | /* Perform text mode translation if required. */ |
f52eb3ef | 2695 | else if ((fd_info[fd].flags & FILE_BINARY) == 0) |
76b3903d GV |
2696 | { |
2697 | nchars = crlf_to_lf (nchars, orig_buffer); | |
2698 | /* If buffer contains only CR, return that. To be absolutely | |
2699 | sure we should attempt to read the next char, but in | |
2700 | practice a CR to be followed by LF would not appear by | |
2701 | itself in the buffer. */ | |
2702 | if (nchars > 1 && orig_buffer[nchars - 1] == 0x0d) | |
2703 | { | |
2704 | fd_info[fd].flags |= FILE_LAST_CR; | |
2705 | nchars--; | |
2706 | } | |
76b3903d | 2707 | } |
480b0c5b GV |
2708 | } |
2709 | else | |
2710 | nchars = _read (fd, buffer, count); | |
2711 | ||
76b3903d | 2712 | return nchars; |
480b0c5b GV |
2713 | } |
2714 | ||
2715 | /* For now, don't bother with a non-blocking mode */ | |
2716 | int | |
2717 | sys_write (int fd, const void * buffer, unsigned int count) | |
2718 | { | |
2719 | int nchars; | |
2720 | ||
2721 | if (fd < 0 || fd >= MAXDESC) | |
2722 | { | |
2723 | errno = EBADF; | |
2724 | return -1; | |
2725 | } | |
2726 | ||
2727 | if (fd_info[fd].flags & (FILE_PIPE | FILE_SOCKET)) | |
76b3903d GV |
2728 | { |
2729 | if ((fd_info[fd].flags & FILE_WRITE) == 0) | |
2730 | { | |
2731 | errno = EBADF; | |
2732 | return -1; | |
2733 | } | |
2734 | ||
2735 | /* Perform text mode translation if required. */ | |
2736 | if ((fd_info[fd].flags & FILE_BINARY) == 0) | |
2737 | { | |
2738 | char * tmpbuf = alloca (count * 2); | |
2739 | unsigned char * src = (void *)buffer; | |
2740 | unsigned char * dst = tmpbuf; | |
2741 | int nbytes = count; | |
2742 | ||
2743 | while (1) | |
2744 | { | |
2745 | unsigned char *next; | |
2746 | /* copy next line or remaining bytes */ | |
2747 | next = _memccpy (dst, src, '\n', nbytes); | |
2748 | if (next) | |
2749 | { | |
2750 | /* copied one line ending with '\n' */ | |
2751 | int copied = next - dst; | |
2752 | nbytes -= copied; | |
2753 | src += copied; | |
2754 | /* insert '\r' before '\n' */ | |
2755 | next[-1] = '\r'; | |
2756 | next[0] = '\n'; | |
2757 | dst = next + 1; | |
2758 | count++; | |
2759 | } | |
2760 | else | |
2761 | /* copied remaining partial line -> now finished */ | |
2762 | break; | |
2763 | } | |
2764 | buffer = tmpbuf; | |
2765 | } | |
2766 | } | |
2767 | ||
480b0c5b GV |
2768 | #ifdef HAVE_SOCKETS |
2769 | if (fd_info[fd].flags & FILE_SOCKET) | |
2770 | { | |
f249a012 | 2771 | if (winsock_lib == NULL) abort (); |
480b0c5b GV |
2772 | nchars = pfn_send (SOCK_HANDLE (fd), buffer, count, 0); |
2773 | if (nchars == SOCKET_ERROR) | |
2774 | { | |
2775 | DebPrint(("sys_read.send failed with error %d on socket %ld\n", | |
2776 | pfn_WSAGetLastError (), SOCK_HANDLE (fd))); | |
2777 | set_errno (); | |
2778 | } | |
2779 | } | |
2780 | else | |
2781 | #endif | |
2782 | nchars = _write (fd, buffer, count); | |
2783 | ||
2784 | return nchars; | |
2785 | } | |
2786 | ||
f52eb3ef GV |
2787 | static void |
2788 | check_windows_init_file () | |
2789 | { | |
2790 | extern int noninteractive, inhibit_window_system; | |
2791 | ||
2792 | /* A common indication that Emacs is not installed properly is when | |
2793 | it cannot find the Windows installation file. If this file does | |
2794 | not exist in the expected place, tell the user. */ | |
2795 | ||
2796 | if (!noninteractive && !inhibit_window_system) { | |
2797 | extern Lisp_Object Vwindow_system, Vload_path; | |
2798 | Lisp_Object init_file; | |
2799 | int fd; | |
2800 | ||
2801 | init_file = build_string ("term/w32-win"); | |
2802 | fd = openp (Vload_path, init_file, ".el:.elc", NULL, 0); | |
2803 | if (fd < 0) { | |
2804 | Lisp_Object load_path_print = Fprin1_to_string (Vload_path, Qnil); | |
2805 | char *init_file_name = XSTRING (init_file)->data; | |
2806 | char *load_path = XSTRING (load_path_print)->data; | |
2807 | char *buffer = alloca (1024); | |
2808 | ||
2809 | sprintf (buffer, | |
2810 | "The Emacs Windows initialization file \"%s.el\" " | |
2811 | "could not be found in your Emacs installation. " | |
2812 | "Emacs checked the following directories for this file:\n" | |
2813 | "\n%s\n\n" | |
2814 | "When Emacs cannot find this file, it usually means that it " | |
2815 | "was not installed properly, or its distribution file was " | |
2816 | "not unpacked properly.\nSee the README.W32 file in the " | |
2817 | "top-level Emacs directory for more information.", | |
2818 | init_file_name, load_path); | |
2819 | MessageBox (NULL, | |
2820 | buffer, | |
2821 | "Emacs Abort Dialog", | |
2822 | MB_OK | MB_ICONEXCLAMATION | MB_TASKMODAL); | |
2823 | close (fd); | |
2824 | ||
2825 | /* Use the low-level Emacs abort. */ | |
2826 | #undef abort | |
2827 | abort (); | |
2828 | } | |
2829 | } | |
2830 | } | |
480b0c5b GV |
2831 | |
2832 | void | |
2833 | term_ntproc () | |
2834 | { | |
2835 | #ifdef HAVE_SOCKETS | |
2836 | /* shutdown the socket interface if necessary */ | |
2837 | term_winsock (); | |
2838 | #endif | |
f52eb3ef GV |
2839 | |
2840 | /* Check whether we are shutting down because we cannot find the | |
2841 | Windows initialization file. Do this during shutdown so that | |
2842 | Emacs is initialized as possible, and so that it is out of the | |
2843 | critical startup path. */ | |
2844 | check_windows_init_file (); | |
480b0c5b GV |
2845 | } |
2846 | ||
2847 | void | |
2848 | init_ntproc () | |
2849 | { | |
2850 | #ifdef HAVE_SOCKETS | |
f249a012 RS |
2851 | /* Initialise the socket interface now if available and requested by |
2852 | the user by defining PRELOAD_WINSOCK; otherwise loading will be | |
fbd6baed | 2853 | delayed until open-network-stream is called (w32-has-winsock can |
f249a012 RS |
2854 | also be used to dynamically load or reload winsock). |
2855 | ||
2856 | Conveniently, init_environment is called before us, so | |
2857 | PRELOAD_WINSOCK can be set in the registry. */ | |
2858 | ||
2859 | /* Always initialize this correctly. */ | |
2860 | winsock_lib = NULL; | |
2861 | ||
2862 | if (getenv ("PRELOAD_WINSOCK") != NULL) | |
2863 | init_winsock (TRUE); | |
480b0c5b GV |
2864 | #endif |
2865 | ||
2866 | /* Initial preparation for subprocess support: replace our standard | |
2867 | handles with non-inheritable versions. */ | |
2868 | { | |
2869 | HANDLE parent; | |
2870 | HANDLE stdin_save = INVALID_HANDLE_VALUE; | |
2871 | HANDLE stdout_save = INVALID_HANDLE_VALUE; | |
2872 | HANDLE stderr_save = INVALID_HANDLE_VALUE; | |
2873 | ||
2874 | parent = GetCurrentProcess (); | |
2875 | ||
2876 | /* ignore errors when duplicating and closing; typically the | |
2877 | handles will be invalid when running as a gui program. */ | |
2878 | DuplicateHandle (parent, | |
2879 | GetStdHandle (STD_INPUT_HANDLE), | |
2880 | parent, | |
2881 | &stdin_save, | |
2882 | 0, | |
2883 | FALSE, | |
2884 | DUPLICATE_SAME_ACCESS); | |
2885 | ||
2886 | DuplicateHandle (parent, | |
2887 | GetStdHandle (STD_OUTPUT_HANDLE), | |
2888 | parent, | |
2889 | &stdout_save, | |
2890 | 0, | |
2891 | FALSE, | |
2892 | DUPLICATE_SAME_ACCESS); | |
2893 | ||
2894 | DuplicateHandle (parent, | |
2895 | GetStdHandle (STD_ERROR_HANDLE), | |
2896 | parent, | |
2897 | &stderr_save, | |
2898 | 0, | |
2899 | FALSE, | |
2900 | DUPLICATE_SAME_ACCESS); | |
2901 | ||
2902 | fclose (stdin); | |
2903 | fclose (stdout); | |
2904 | fclose (stderr); | |
2905 | ||
2906 | if (stdin_save != INVALID_HANDLE_VALUE) | |
2907 | _open_osfhandle ((long) stdin_save, O_TEXT); | |
2908 | else | |
76b3903d GV |
2909 | _open ("nul", O_TEXT | O_NOINHERIT | O_RDONLY); |
2910 | _fdopen (0, "r"); | |
480b0c5b GV |
2911 | |
2912 | if (stdout_save != INVALID_HANDLE_VALUE) | |
2913 | _open_osfhandle ((long) stdout_save, O_TEXT); | |
2914 | else | |
76b3903d GV |
2915 | _open ("nul", O_TEXT | O_NOINHERIT | O_WRONLY); |
2916 | _fdopen (1, "w"); | |
480b0c5b GV |
2917 | |
2918 | if (stderr_save != INVALID_HANDLE_VALUE) | |
2919 | _open_osfhandle ((long) stderr_save, O_TEXT); | |
2920 | else | |
76b3903d GV |
2921 | _open ("nul", O_TEXT | O_NOINHERIT | O_WRONLY); |
2922 | _fdopen (2, "w"); | |
480b0c5b GV |
2923 | } |
2924 | ||
2925 | /* unfortunately, atexit depends on implementation of malloc */ | |
2926 | /* atexit (term_ntproc); */ | |
2927 | signal (SIGABRT, term_ntproc); | |
76b3903d GV |
2928 | |
2929 | /* determine which drives are fixed, for GetCachedVolumeInformation */ | |
2930 | { | |
2931 | /* GetDriveType must have trailing backslash. */ | |
2932 | char drive[] = "A:\\"; | |
2933 | ||
2934 | /* Loop over all possible drive letters */ | |
2935 | while (*drive <= 'Z') | |
2936 | { | |
2937 | /* Record if this drive letter refers to a fixed drive. */ | |
2938 | fixed_drives[DRIVE_INDEX (*drive)] = | |
2939 | (GetDriveType (drive) == DRIVE_FIXED); | |
2940 | ||
2941 | (*drive)++; | |
2942 | } | |
2943 | } | |
480b0c5b GV |
2944 | } |
2945 | ||
2946 | /* end of nt.c */ |