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 | 32 | #include <signal.h> |
b3308d2e | 33 | #include <sys/file.h> |
480b0c5b | 34 | #include <sys/time.h> |
16bb7578 | 35 | #include <sys/utime.h> |
480b0c5b GV |
36 | |
37 | /* must include CRT headers *before* config.h */ | |
38 | #include "config.h" | |
39 | #undef access | |
40 | #undef chdir | |
41 | #undef chmod | |
42 | #undef creat | |
43 | #undef ctime | |
44 | #undef fopen | |
45 | #undef link | |
46 | #undef mkdir | |
47 | #undef mktemp | |
48 | #undef open | |
49 | #undef rename | |
50 | #undef rmdir | |
51 | #undef unlink | |
52 | ||
53 | #undef close | |
54 | #undef dup | |
55 | #undef dup2 | |
56 | #undef pipe | |
57 | #undef read | |
58 | #undef write | |
95ed0025 | 59 | |
d8fcc1b9 AI |
60 | #undef strerror |
61 | ||
95ed0025 | 62 | #include "lisp.h" |
95ed0025 RS |
63 | |
64 | #include <pwd.h> | |
65 | ||
971bce75 AI |
66 | #ifdef __GNUC__ |
67 | #define _ANONYMOUS_UNION | |
68 | #define _ANONYMOUS_STRUCT | |
69 | #endif | |
480b0c5b | 70 | #include <windows.h> |
00b3b7b3 | 71 | |
480b0c5b GV |
72 | #ifdef HAVE_SOCKETS /* TCP connection support, if kernel can do it */ |
73 | #include <sys/socket.h> | |
74 | #undef socket | |
75 | #undef bind | |
76 | #undef connect | |
77 | #undef htons | |
78 | #undef ntohs | |
79 | #undef inet_addr | |
80 | #undef gethostname | |
81 | #undef gethostbyname | |
82 | #undef getservbyname | |
380961a6 | 83 | #undef shutdown |
480b0c5b | 84 | #endif |
00b3b7b3 | 85 | |
489f9371 | 86 | #include "w32.h" |
480b0c5b | 87 | #include "ndir.h" |
489f9371 | 88 | #include "w32heap.h" |
76b3903d | 89 | |
03887dd3 KH |
90 | #undef min |
91 | #undef max | |
92 | #define min(x, y) (((x) < (y)) ? (x) : (y)) | |
93 | #define max(x, y) (((x) > (y)) ? (x) : (y)) | |
94 | ||
76b3903d GV |
95 | extern Lisp_Object Vw32_downcase_file_names; |
96 | extern Lisp_Object Vw32_generate_fake_inodes; | |
97 | extern Lisp_Object Vw32_get_true_file_attributes; | |
20af4831 | 98 | extern Lisp_Object Vw32_num_mouse_buttons; |
76b3903d GV |
99 | |
100 | static char startup_dir[MAXPATHLEN]; | |
00b3b7b3 | 101 | |
95ed0025 | 102 | /* Get the current working directory. */ |
480b0c5b | 103 | char * |
95ed0025 RS |
104 | getwd (char *dir) |
105 | { | |
76b3903d | 106 | #if 0 |
480b0c5b GV |
107 | if (GetCurrentDirectory (MAXPATHLEN, dir) > 0) |
108 | return dir; | |
109 | return NULL; | |
76b3903d GV |
110 | #else |
111 | /* Emacs doesn't actually change directory itself, and we want to | |
112 | force our real wd to be where emacs.exe is to avoid unnecessary | |
113 | conflicts when trying to rename or delete directories. */ | |
114 | strcpy (dir, startup_dir); | |
115 | return dir; | |
116 | #endif | |
95ed0025 RS |
117 | } |
118 | ||
480b0c5b | 119 | #ifndef HAVE_SOCKETS |
95ed0025 RS |
120 | /* Emulate gethostname. */ |
121 | int | |
122 | gethostname (char *buffer, int size) | |
123 | { | |
124 | /* NT only allows small host names, so the buffer is | |
125 | certainly large enough. */ | |
126 | return !GetComputerName (buffer, &size); | |
127 | } | |
480b0c5b | 128 | #endif /* HAVE_SOCKETS */ |
95ed0025 RS |
129 | |
130 | /* Emulate getloadavg. */ | |
131 | int | |
132 | getloadavg (double loadavg[], int nelem) | |
133 | { | |
134 | int i; | |
135 | ||
136 | /* A faithful emulation is going to have to be saved for a rainy day. */ | |
137 | for (i = 0; i < nelem; i++) | |
138 | { | |
139 | loadavg[i] = 0.0; | |
140 | } | |
141 | return i; | |
142 | } | |
143 | ||
480b0c5b | 144 | /* Emulate getpwuid, getpwnam and others. */ |
95ed0025 | 145 | |
051fe60d GV |
146 | #define PASSWD_FIELD_SIZE 256 |
147 | ||
148 | static char the_passwd_name[PASSWD_FIELD_SIZE]; | |
149 | static char the_passwd_passwd[PASSWD_FIELD_SIZE]; | |
150 | static char the_passwd_gecos[PASSWD_FIELD_SIZE]; | |
151 | static char the_passwd_dir[PASSWD_FIELD_SIZE]; | |
152 | static char the_passwd_shell[PASSWD_FIELD_SIZE]; | |
95ed0025 RS |
153 | |
154 | static struct passwd the_passwd = | |
155 | { | |
156 | the_passwd_name, | |
157 | the_passwd_passwd, | |
158 | 0, | |
159 | 0, | |
160 | 0, | |
161 | the_passwd_gecos, | |
162 | the_passwd_dir, | |
163 | the_passwd_shell, | |
164 | }; | |
165 | ||
480b0c5b GV |
166 | int |
167 | getuid () | |
168 | { | |
169 | return the_passwd.pw_uid; | |
170 | } | |
171 | ||
172 | int | |
173 | geteuid () | |
174 | { | |
175 | /* I could imagine arguing for checking to see whether the user is | |
176 | in the Administrators group and returning a UID of 0 for that | |
177 | case, but I don't know how wise that would be in the long run. */ | |
178 | return getuid (); | |
179 | } | |
180 | ||
181 | int | |
182 | getgid () | |
183 | { | |
184 | return the_passwd.pw_gid; | |
185 | } | |
186 | ||
187 | int | |
188 | getegid () | |
189 | { | |
190 | return getgid (); | |
191 | } | |
192 | ||
95ed0025 RS |
193 | struct passwd * |
194 | getpwuid (int uid) | |
195 | { | |
480b0c5b GV |
196 | if (uid == the_passwd.pw_uid) |
197 | return &the_passwd; | |
198 | return NULL; | |
95ed0025 RS |
199 | } |
200 | ||
201 | struct passwd * | |
202 | getpwnam (char *name) | |
203 | { | |
204 | struct passwd *pw; | |
205 | ||
206 | pw = getpwuid (getuid ()); | |
207 | if (!pw) | |
208 | return pw; | |
209 | ||
480b0c5b | 210 | if (stricmp (name, pw->pw_name)) |
95ed0025 RS |
211 | return NULL; |
212 | ||
213 | return pw; | |
214 | } | |
215 | ||
480b0c5b GV |
216 | void |
217 | init_user_info () | |
95ed0025 | 218 | { |
480b0c5b GV |
219 | /* Find the user's real name by opening the process token and |
220 | looking up the name associated with the user-sid in that token. | |
221 | ||
222 | Use the relative portion of the identifier authority value from | |
223 | the user-sid as the user id value (same for group id using the | |
224 | primary group sid from the process token). */ | |
225 | ||
226 | char user_sid[256], name[256], domain[256]; | |
227 | DWORD length = sizeof (name), dlength = sizeof (domain), trash; | |
228 | HANDLE token = NULL; | |
229 | SID_NAME_USE user_type; | |
230 | ||
231 | if (OpenProcessToken (GetCurrentProcess (), TOKEN_QUERY, &token) | |
232 | && GetTokenInformation (token, TokenUser, | |
233 | (PVOID) user_sid, sizeof (user_sid), &trash) | |
234 | && LookupAccountSid (NULL, *((PSID *) user_sid), name, &length, | |
235 | domain, &dlength, &user_type)) | |
d1c1c3d2 | 236 | { |
480b0c5b GV |
237 | strcpy (the_passwd.pw_name, name); |
238 | /* Determine a reasonable uid value. */ | |
239 | if (stricmp ("administrator", name) == 0) | |
240 | { | |
241 | the_passwd.pw_uid = 0; | |
242 | the_passwd.pw_gid = 0; | |
243 | } | |
244 | else | |
245 | { | |
246 | SID_IDENTIFIER_AUTHORITY * pSIA; | |
247 | ||
248 | pSIA = GetSidIdentifierAuthority (*((PSID *) user_sid)); | |
249 | /* I believe the relative portion is the last 4 bytes (of 6) | |
250 | with msb first. */ | |
251 | the_passwd.pw_uid = ((pSIA->Value[2] << 24) + | |
252 | (pSIA->Value[3] << 16) + | |
253 | (pSIA->Value[4] << 8) + | |
254 | (pSIA->Value[5] << 0)); | |
255 | /* restrict to conventional uid range for normal users */ | |
256 | the_passwd.pw_uid = the_passwd.pw_uid % 60001; | |
257 | ||
258 | /* Get group id */ | |
259 | if (GetTokenInformation (token, TokenPrimaryGroup, | |
260 | (PVOID) user_sid, sizeof (user_sid), &trash)) | |
261 | { | |
262 | SID_IDENTIFIER_AUTHORITY * pSIA; | |
263 | ||
264 | pSIA = GetSidIdentifierAuthority (*((PSID *) user_sid)); | |
265 | the_passwd.pw_gid = ((pSIA->Value[2] << 24) + | |
266 | (pSIA->Value[3] << 16) + | |
267 | (pSIA->Value[4] << 8) + | |
268 | (pSIA->Value[5] << 0)); | |
269 | /* I don't know if this is necessary, but for safety... */ | |
270 | the_passwd.pw_gid = the_passwd.pw_gid % 60001; | |
271 | } | |
272 | else | |
273 | the_passwd.pw_gid = the_passwd.pw_uid; | |
274 | } | |
275 | } | |
276 | /* If security calls are not supported (presumably because we | |
277 | are running under Windows 95), fallback to this. */ | |
278 | else if (GetUserName (name, &length)) | |
279 | { | |
280 | strcpy (the_passwd.pw_name, name); | |
281 | if (stricmp ("administrator", name) == 0) | |
282 | the_passwd.pw_uid = 0; | |
283 | else | |
284 | the_passwd.pw_uid = 123; | |
285 | the_passwd.pw_gid = the_passwd.pw_uid; | |
286 | } | |
287 | else | |
288 | { | |
289 | strcpy (the_passwd.pw_name, "unknown"); | |
290 | the_passwd.pw_uid = 123; | |
291 | the_passwd.pw_gid = 123; | |
d1c1c3d2 | 292 | } |
95ed0025 | 293 | |
480b0c5b GV |
294 | /* Ensure HOME and SHELL are defined. */ |
295 | if (getenv ("HOME") == NULL) | |
ca149beb | 296 | abort (); |
480b0c5b | 297 | if (getenv ("SHELL") == NULL) |
ca149beb | 298 | abort (); |
95ed0025 | 299 | |
480b0c5b GV |
300 | /* Set dir and shell from environment variables. */ |
301 | strcpy (the_passwd.pw_dir, getenv ("HOME")); | |
302 | strcpy (the_passwd.pw_shell, getenv ("SHELL")); | |
bd4a449f | 303 | |
480b0c5b GV |
304 | if (token) |
305 | CloseHandle (token); | |
95ed0025 RS |
306 | } |
307 | ||
95ed0025 | 308 | int |
480b0c5b | 309 | random () |
95ed0025 | 310 | { |
480b0c5b GV |
311 | /* rand () on NT gives us 15 random bits...hack together 30 bits. */ |
312 | return ((rand () << 15) | rand ()); | |
95ed0025 RS |
313 | } |
314 | ||
95ed0025 | 315 | void |
480b0c5b | 316 | srandom (int seed) |
95ed0025 | 317 | { |
480b0c5b | 318 | srand (seed); |
95ed0025 RS |
319 | } |
320 | ||
76b3903d | 321 | |
cbe39279 RS |
322 | /* Normalize filename by converting all path separators to |
323 | the specified separator. Also conditionally convert upper | |
324 | case path name components to lower case. */ | |
325 | ||
326 | static void | |
327 | normalize_filename (fp, path_sep) | |
328 | register char *fp; | |
329 | char path_sep; | |
330 | { | |
331 | char sep; | |
332 | char *elem; | |
333 | ||
5162ffce MB |
334 | /* Always lower-case drive letters a-z, even if the filesystem |
335 | preserves case in filenames. | |
336 | This is so filenames can be compared by string comparison | |
337 | functions that are case-sensitive. Even case-preserving filesystems | |
338 | do not distinguish case in drive letters. */ | |
339 | if (fp[1] == ':' && *fp >= 'A' && *fp <= 'Z') | |
340 | { | |
341 | *fp += 'a' - 'A'; | |
342 | fp += 2; | |
343 | } | |
344 | ||
fbd6baed | 345 | if (NILP (Vw32_downcase_file_names)) |
cbe39279 RS |
346 | { |
347 | while (*fp) | |
348 | { | |
349 | if (*fp == '/' || *fp == '\\') | |
350 | *fp = path_sep; | |
351 | fp++; | |
352 | } | |
353 | return; | |
354 | } | |
355 | ||
356 | sep = path_sep; /* convert to this path separator */ | |
357 | elem = fp; /* start of current path element */ | |
358 | ||
359 | do { | |
360 | if (*fp >= 'a' && *fp <= 'z') | |
361 | elem = 0; /* don't convert this element */ | |
362 | ||
363 | if (*fp == 0 || *fp == ':') | |
364 | { | |
365 | sep = *fp; /* restore current separator (or 0) */ | |
366 | *fp = '/'; /* after conversion of this element */ | |
367 | } | |
368 | ||
369 | if (*fp == '/' || *fp == '\\') | |
370 | { | |
371 | if (elem && elem != fp) | |
372 | { | |
373 | *fp = 0; /* temporary end of string */ | |
374 | _strlwr (elem); /* while we convert to lower case */ | |
375 | } | |
376 | *fp = sep; /* convert (or restore) path separator */ | |
377 | elem = fp + 1; /* next element starts after separator */ | |
378 | sep = path_sep; | |
379 | } | |
380 | } while (*fp++); | |
381 | } | |
382 | ||
480b0c5b | 383 | /* Destructively turn backslashes into slashes. */ |
95ed0025 | 384 | void |
480b0c5b GV |
385 | dostounix_filename (p) |
386 | register char *p; | |
95ed0025 | 387 | { |
cbe39279 | 388 | normalize_filename (p, '/'); |
95ed0025 RS |
389 | } |
390 | ||
480b0c5b | 391 | /* Destructively turn slashes into backslashes. */ |
95ed0025 | 392 | void |
480b0c5b GV |
393 | unixtodos_filename (p) |
394 | register char *p; | |
95ed0025 | 395 | { |
cbe39279 | 396 | normalize_filename (p, '\\'); |
95ed0025 RS |
397 | } |
398 | ||
480b0c5b GV |
399 | /* Remove all CR's that are followed by a LF. |
400 | (From msdos.c...probably should figure out a way to share it, | |
401 | although this code isn't going to ever change.) */ | |
35f0d482 | 402 | int |
480b0c5b GV |
403 | crlf_to_lf (n, buf) |
404 | register int n; | |
405 | register unsigned char *buf; | |
35f0d482 | 406 | { |
480b0c5b GV |
407 | unsigned char *np = buf; |
408 | unsigned char *startp = buf; | |
409 | unsigned char *endp = buf + n; | |
35f0d482 | 410 | |
480b0c5b GV |
411 | if (n == 0) |
412 | return n; | |
413 | while (buf < endp - 1) | |
95ed0025 | 414 | { |
480b0c5b GV |
415 | if (*buf == 0x0d) |
416 | { | |
417 | if (*(++buf) != 0x0a) | |
418 | *np++ = 0x0d; | |
419 | } | |
420 | else | |
421 | *np++ = *buf++; | |
95ed0025 | 422 | } |
480b0c5b GV |
423 | if (buf < endp) |
424 | *np++ = *buf++; | |
425 | return np - startp; | |
95ed0025 RS |
426 | } |
427 | ||
76b3903d GV |
428 | /* Parse the root part of file name, if present. Return length and |
429 | optionally store pointer to char after root. */ | |
430 | static int | |
431 | parse_root (char * name, char ** pPath) | |
432 | { | |
433 | char * start = name; | |
434 | ||
435 | if (name == NULL) | |
436 | return 0; | |
437 | ||
438 | /* find the root name of the volume if given */ | |
439 | if (isalpha (name[0]) && name[1] == ':') | |
440 | { | |
441 | /* skip past drive specifier */ | |
442 | name += 2; | |
443 | if (IS_DIRECTORY_SEP (name[0])) | |
444 | name++; | |
445 | } | |
446 | else if (IS_DIRECTORY_SEP (name[0]) && IS_DIRECTORY_SEP (name[1])) | |
447 | { | |
448 | int slashes = 2; | |
449 | name += 2; | |
450 | do | |
451 | { | |
452 | if (IS_DIRECTORY_SEP (*name) && --slashes == 0) | |
453 | break; | |
454 | name++; | |
455 | } | |
456 | while ( *name ); | |
457 | if (IS_DIRECTORY_SEP (name[0])) | |
458 | name++; | |
459 | } | |
460 | ||
461 | if (pPath) | |
462 | *pPath = name; | |
463 | ||
464 | return name - start; | |
465 | } | |
466 | ||
467 | /* Get long base name for name; name is assumed to be absolute. */ | |
468 | static int | |
469 | get_long_basename (char * name, char * buf, int size) | |
470 | { | |
471 | WIN32_FIND_DATA find_data; | |
472 | HANDLE dir_handle; | |
473 | int len = 0; | |
474 | ||
9ab8560d | 475 | /* must be valid filename, no wild cards or other invalid characters */ |
bb1584c8 RS |
476 | if (strpbrk (name, "*?|<>\"")) |
477 | return 0; | |
478 | ||
76b3903d GV |
479 | dir_handle = FindFirstFile (name, &find_data); |
480 | if (dir_handle != INVALID_HANDLE_VALUE) | |
481 | { | |
482 | if ((len = strlen (find_data.cFileName)) < size) | |
483 | memcpy (buf, find_data.cFileName, len + 1); | |
484 | else | |
485 | len = 0; | |
486 | FindClose (dir_handle); | |
487 | } | |
488 | return len; | |
489 | } | |
490 | ||
491 | /* Get long name for file, if possible (assumed to be absolute). */ | |
492 | BOOL | |
493 | w32_get_long_filename (char * name, char * buf, int size) | |
494 | { | |
495 | char * o = buf; | |
496 | char * p; | |
497 | char * q; | |
498 | char full[ MAX_PATH ]; | |
499 | int len; | |
500 | ||
501 | len = strlen (name); | |
502 | if (len >= MAX_PATH) | |
503 | return FALSE; | |
504 | ||
505 | /* Use local copy for destructive modification. */ | |
506 | memcpy (full, name, len+1); | |
507 | unixtodos_filename (full); | |
508 | ||
509 | /* Copy root part verbatim. */ | |
510 | len = parse_root (full, &p); | |
511 | memcpy (o, full, len); | |
512 | o += len; | |
4f8ac0b2 | 513 | *o = '\0'; |
76b3903d GV |
514 | size -= len; |
515 | ||
4f8ac0b2 | 516 | while (p != NULL && *p) |
76b3903d GV |
517 | { |
518 | q = p; | |
519 | p = strchr (q, '\\'); | |
520 | if (p) *p = '\0'; | |
521 | len = get_long_basename (full, o, size); | |
522 | if (len > 0) | |
523 | { | |
524 | o += len; | |
525 | size -= len; | |
526 | if (p != NULL) | |
527 | { | |
528 | *p++ = '\\'; | |
529 | if (size < 2) | |
530 | return FALSE; | |
531 | *o++ = '\\'; | |
532 | size--; | |
533 | *o = '\0'; | |
534 | } | |
535 | } | |
536 | else | |
537 | return FALSE; | |
538 | } | |
76b3903d GV |
539 | |
540 | return TRUE; | |
541 | } | |
542 | ||
9d3355d1 GV |
543 | int |
544 | is_unc_volume (const char *filename) | |
545 | { | |
546 | const char *ptr = filename; | |
547 | ||
548 | if (!IS_DIRECTORY_SEP (ptr[0]) || !IS_DIRECTORY_SEP (ptr[1]) || !ptr[2]) | |
549 | return 0; | |
550 | ||
551 | if (strpbrk (ptr + 2, "*?|<>\"\\/")) | |
552 | return 0; | |
553 | ||
554 | return 1; | |
555 | } | |
76b3903d | 556 | |
95ed0025 RS |
557 | /* Routines that are no-ops on NT but are defined to get Emacs to compile. */ |
558 | ||
95ed0025 RS |
559 | int |
560 | sigsetmask (int signal_mask) | |
561 | { | |
562 | return 0; | |
563 | } | |
564 | ||
8f900f6e AI |
565 | int |
566 | sigmask (int sig) | |
567 | { | |
568 | return 0; | |
569 | } | |
570 | ||
95ed0025 RS |
571 | int |
572 | sigblock (int sig) | |
573 | { | |
574 | return 0; | |
575 | } | |
576 | ||
8f900f6e AI |
577 | int |
578 | sigunblock (int sig) | |
579 | { | |
580 | return 0; | |
581 | } | |
582 | ||
95ed0025 RS |
583 | int |
584 | setpgrp (int pid, int gid) | |
585 | { | |
586 | return 0; | |
587 | } | |
588 | ||
589 | int | |
590 | alarm (int seconds) | |
591 | { | |
592 | return 0; | |
593 | } | |
594 | ||
c6624584 | 595 | void |
95ed0025 RS |
596 | unrequest_sigio (void) |
597 | { | |
c6624584 | 598 | return; |
95ed0025 RS |
599 | } |
600 | ||
c6624584 | 601 | void |
95ed0025 RS |
602 | request_sigio (void) |
603 | { | |
c6624584 | 604 | return; |
95ed0025 RS |
605 | } |
606 | ||
480b0c5b | 607 | #define REG_ROOT "SOFTWARE\\GNU\\Emacs" |
f332b293 GV |
608 | |
609 | LPBYTE | |
fbd6baed | 610 | w32_get_resource (key, lpdwtype) |
f332b293 GV |
611 | char *key; |
612 | LPDWORD lpdwtype; | |
613 | { | |
614 | LPBYTE lpvalue; | |
615 | HKEY hrootkey = NULL; | |
616 | DWORD cbData; | |
617 | BOOL ok = FALSE; | |
618 | ||
619 | /* Check both the current user and the local machine to see if | |
620 | we have any resources. */ | |
621 | ||
622 | if (RegOpenKeyEx (HKEY_CURRENT_USER, REG_ROOT, 0, KEY_READ, &hrootkey) == ERROR_SUCCESS) | |
623 | { | |
624 | lpvalue = NULL; | |
625 | ||
626 | if (RegQueryValueEx (hrootkey, key, NULL, NULL, NULL, &cbData) == ERROR_SUCCESS | |
627 | && (lpvalue = (LPBYTE) xmalloc (cbData)) != NULL | |
628 | && RegQueryValueEx (hrootkey, key, NULL, lpdwtype, lpvalue, &cbData) == ERROR_SUCCESS) | |
629 | { | |
630 | return (lpvalue); | |
631 | } | |
632 | ||
633 | if (lpvalue) xfree (lpvalue); | |
634 | ||
635 | RegCloseKey (hrootkey); | |
636 | } | |
637 | ||
638 | if (RegOpenKeyEx (HKEY_LOCAL_MACHINE, REG_ROOT, 0, KEY_READ, &hrootkey) == ERROR_SUCCESS) | |
639 | { | |
640 | lpvalue = NULL; | |
641 | ||
76b3903d GV |
642 | if (RegQueryValueEx (hrootkey, key, NULL, NULL, NULL, &cbData) == ERROR_SUCCESS |
643 | && (lpvalue = (LPBYTE) xmalloc (cbData)) != NULL | |
644 | && RegQueryValueEx (hrootkey, key, NULL, lpdwtype, lpvalue, &cbData) == ERROR_SUCCESS) | |
f332b293 GV |
645 | { |
646 | return (lpvalue); | |
647 | } | |
648 | ||
649 | if (lpvalue) xfree (lpvalue); | |
650 | ||
651 | RegCloseKey (hrootkey); | |
652 | } | |
653 | ||
654 | return (NULL); | |
655 | } | |
656 | ||
75b08edb GV |
657 | char *get_emacs_configuration (void); |
658 | extern Lisp_Object Vsystem_configuration; | |
659 | ||
f332b293 | 660 | void |
aa7b87b0 | 661 | init_environment (char ** argv) |
f332b293 | 662 | { |
b3308d2e KH |
663 | int len; |
664 | static const char * const tempdirs[] = { | |
665 | "$TMPDIR", "$TEMP", "$TMP", "c:/" | |
666 | }; | |
667 | int i; | |
668 | const int imax = sizeof (tempdirs) / sizeof (tempdirs[0]); | |
669 | ||
670 | /* Make sure they have a usable $TMPDIR. Many Emacs functions use | |
671 | temporary files and assume "/tmp" if $TMPDIR is unset, which | |
672 | will break on DOS/Windows. Refuse to work if we cannot find | |
673 | a directory, not even "c:/", usable for that purpose. */ | |
674 | for (i = 0; i < imax ; i++) | |
675 | { | |
676 | const char *tmp = tempdirs[i]; | |
677 | ||
678 | if (*tmp == '$') | |
679 | tmp = getenv (tmp + 1); | |
680 | /* Note that `access' can lie to us if the directory resides on a | |
681 | read-only filesystem, like CD-ROM or a write-protected floppy. | |
682 | The only way to be really sure is to actually create a file and | |
683 | see if it succeeds. But I think that's too much to ask. */ | |
a302c7ae | 684 | if (tmp && _access (tmp, D_OK) == 0) |
b3308d2e KH |
685 | { |
686 | char * var = alloca (strlen (tmp) + 8); | |
687 | sprintf (var, "TMPDIR=%s", tmp); | |
a302c7ae | 688 | _putenv (var); |
b3308d2e KH |
689 | break; |
690 | } | |
691 | } | |
692 | if (i >= imax) | |
693 | cmd_error_internal | |
694 | (Fcons (Qerror, | |
695 | Fcons (build_string ("no usable temporary directories found!!"), | |
696 | Qnil)), | |
697 | "While setting TMPDIR: "); | |
698 | ||
ca149beb AI |
699 | /* Check for environment variables and use registry settings if they |
700 | don't exist. Fallback on default values where applicable. */ | |
f332b293 | 701 | { |
480b0c5b GV |
702 | int i; |
703 | LPBYTE lpval; | |
704 | DWORD dwType; | |
69fb0241 | 705 | char locale_name[32]; |
f332b293 | 706 | |
ca149beb AI |
707 | static struct env_entry |
708 | { | |
709 | char * name; | |
710 | char * def_value; | |
711 | } env_vars[] = | |
712 | { | |
713 | {"HOME", "C:/"}, | |
714 | {"PRELOAD_WINSOCK", NULL}, | |
715 | {"emacs_dir", "C:/emacs"}, | |
716 | {"EMACSLOADPATH", "%emacs_dir%/site-lisp;%emacs_dir%/lisp;%emacs_dir%/leim"}, | |
717 | {"SHELL", "%emacs_dir%/bin/cmdproxy.exe"}, | |
718 | {"EMACSDATA", "%emacs_dir%/etc"}, | |
719 | {"EMACSPATH", "%emacs_dir%/bin"}, | |
720 | {"EMACSLOCKDIR", "%emacs_dir%/lock"}, | |
76b3903d | 721 | /* We no longer set INFOPATH because Info-default-directory-list |
ca149beb AI |
722 | is then ignored. */ |
723 | /* {"INFOPATH", "%emacs_dir%/info"}, */ | |
724 | {"EMACSDOC", "%emacs_dir%/etc"}, | |
69fb0241 JR |
725 | {"TERM", "cmd"}, |
726 | {"LANG", NULL}, | |
480b0c5b GV |
727 | }; |
728 | ||
69fb0241 JR |
729 | /* Get default locale info and use it for LANG. */ |
730 | if (GetLocaleInfo (LOCALE_USER_DEFAULT, | |
731 | LOCALE_SABBREVLANGNAME | LOCALE_USE_CP_ACP, | |
732 | locale_name, sizeof (locale_name))) | |
733 | { | |
734 | for (i = 0; i < (sizeof (env_vars) / sizeof (env_vars[0])); i++) | |
735 | { | |
736 | if (strcmp (env_vars[i].name, "LANG") == 0) | |
737 | { | |
738 | env_vars[i].def_value = locale_name; | |
739 | break; | |
740 | } | |
741 | } | |
742 | } | |
743 | ||
ca149beb AI |
744 | #define SET_ENV_BUF_SIZE (4 * MAX_PATH) /* to cover EMACSLOADPATH */ |
745 | ||
746 | /* Treat emacs_dir specially: set it unconditionally based on our | |
747 | location, if it appears that we are running from the bin subdir | |
748 | of a standard installation. */ | |
749 | { | |
750 | char *p; | |
751 | char modname[MAX_PATH]; | |
752 | ||
753 | if (!GetModuleFileName (NULL, modname, MAX_PATH)) | |
754 | abort (); | |
755 | if ((p = strrchr (modname, '\\')) == NULL) | |
756 | abort (); | |
757 | *p = 0; | |
758 | ||
759 | if ((p = strrchr (modname, '\\')) && stricmp (p, "\\bin") == 0) | |
760 | { | |
761 | char buf[SET_ENV_BUF_SIZE]; | |
762 | ||
763 | *p = 0; | |
764 | for (p = modname; *p; p++) | |
765 | if (*p == '\\') *p = '/'; | |
766 | ||
767 | _snprintf (buf, sizeof(buf)-1, "emacs_dir=%s", modname); | |
a302c7ae | 768 | _putenv (strdup (buf)); |
ca149beb AI |
769 | } |
770 | } | |
771 | ||
69fb0241 | 772 | for (i = 0; i < (sizeof (env_vars) / sizeof (env_vars[0])); i++) |
f332b293 | 773 | { |
ca149beb | 774 | if (!getenv (env_vars[i].name)) |
480b0c5b | 775 | { |
ca149beb | 776 | int dont_free = 0; |
480b0c5b | 777 | |
ca149beb AI |
778 | if ((lpval = w32_get_resource (env_vars[i].name, &dwType)) == NULL) |
779 | { | |
780 | lpval = env_vars[i].def_value; | |
781 | dwType = REG_EXPAND_SZ; | |
782 | dont_free = 1; | |
480b0c5b | 783 | } |
ca149beb AI |
784 | |
785 | if (lpval) | |
480b0c5b | 786 | { |
ca149beb AI |
787 | if (dwType == REG_EXPAND_SZ) |
788 | { | |
789 | char buf1[SET_ENV_BUF_SIZE], buf2[SET_ENV_BUF_SIZE]; | |
790 | ||
791 | ExpandEnvironmentStrings ((LPSTR) lpval, buf1, sizeof(buf1)); | |
792 | _snprintf (buf2, sizeof(buf2)-1, "%s=%s", env_vars[i].name, buf1); | |
a302c7ae | 793 | _putenv (strdup (buf2)); |
ca149beb AI |
794 | } |
795 | else if (dwType == REG_SZ) | |
796 | { | |
797 | char buf[SET_ENV_BUF_SIZE]; | |
f332b293 | 798 | |
ca149beb | 799 | _snprintf (buf, sizeof(buf)-1, "%s=%s", env_vars[i].name, lpval); |
a302c7ae | 800 | _putenv (strdup (buf)); |
ca149beb | 801 | } |
f332b293 | 802 | |
ca149beb AI |
803 | if (!dont_free) |
804 | xfree (lpval); | |
805 | } | |
480b0c5b GV |
806 | } |
807 | } | |
808 | } | |
809 | ||
75b08edb GV |
810 | /* Rebuild system configuration to reflect invoking system. */ |
811 | Vsystem_configuration = build_string (EMACS_CONFIGURATION); | |
812 | ||
76b3903d GV |
813 | /* Another special case: on NT, the PATH variable is actually named |
814 | "Path" although cmd.exe (perhaps NT itself) arranges for | |
815 | environment variable lookup and setting to be case insensitive. | |
816 | However, Emacs assumes a fully case sensitive environment, so we | |
817 | need to change "Path" to "PATH" to match the expectations of | |
818 | various elisp packages. We do this by the sneaky method of | |
819 | modifying the string in the C runtime environ entry. | |
820 | ||
821 | The same applies to COMSPEC. */ | |
822 | { | |
823 | char ** envp; | |
824 | ||
825 | for (envp = environ; *envp; envp++) | |
826 | if (_strnicmp (*envp, "PATH=", 5) == 0) | |
827 | memcpy (*envp, "PATH=", 5); | |
828 | else if (_strnicmp (*envp, "COMSPEC=", 8) == 0) | |
829 | memcpy (*envp, "COMSPEC=", 8); | |
830 | } | |
831 | ||
832 | /* Remember the initial working directory for getwd, then make the | |
833 | real wd be the location of emacs.exe to avoid conflicts when | |
834 | renaming or deleting directories. (We also don't call chdir when | |
835 | running subprocesses for the same reason.) */ | |
836 | if (!GetCurrentDirectory (MAXPATHLEN, startup_dir)) | |
837 | abort (); | |
838 | ||
839 | { | |
840 | char *p; | |
aa7b87b0 | 841 | static char modname[MAX_PATH]; |
76b3903d GV |
842 | |
843 | if (!GetModuleFileName (NULL, modname, MAX_PATH)) | |
844 | abort (); | |
845 | if ((p = strrchr (modname, '\\')) == NULL) | |
846 | abort (); | |
847 | *p = 0; | |
848 | ||
849 | SetCurrentDirectory (modname); | |
aa7b87b0 AI |
850 | |
851 | /* Ensure argv[0] has the full path to Emacs. */ | |
852 | *p = '\\'; | |
853 | argv[0] = modname; | |
76b3903d GV |
854 | } |
855 | ||
20af4831 JR |
856 | /* Determine if there is a middle mouse button, to allow parse_button |
857 | to decide whether right mouse events should be mouse-2 or | |
858 | mouse-3. */ | |
859 | XSETINT (Vw32_num_mouse_buttons, GetSystemMetrics (SM_CMOUSEBUTTONS)); | |
860 | ||
480b0c5b GV |
861 | init_user_info (); |
862 | } | |
863 | ||
864 | /* We don't have scripts to automatically determine the system configuration | |
865 | for Emacs before it's compiled, and we don't want to have to make the | |
866 | user enter it, so we define EMACS_CONFIGURATION to invoke this runtime | |
867 | routine. */ | |
868 | ||
480b0c5b GV |
869 | char * |
870 | get_emacs_configuration (void) | |
871 | { | |
872 | char *arch, *oem, *os; | |
c5247da2 | 873 | int build_num; |
a302c7ae | 874 | static char configuration_buffer[32]; |
480b0c5b GV |
875 | |
876 | /* Determine the processor type. */ | |
877 | switch (get_processor_type ()) | |
878 | { | |
879 | ||
880 | #ifdef PROCESSOR_INTEL_386 | |
881 | case PROCESSOR_INTEL_386: | |
882 | case PROCESSOR_INTEL_486: | |
883 | case PROCESSOR_INTEL_PENTIUM: | |
884 | arch = "i386"; | |
885 | break; | |
886 | #endif | |
887 | ||
888 | #ifdef PROCESSOR_INTEL_860 | |
889 | case PROCESSOR_INTEL_860: | |
890 | arch = "i860"; | |
891 | break; | |
892 | #endif | |
893 | ||
894 | #ifdef PROCESSOR_MIPS_R2000 | |
895 | case PROCESSOR_MIPS_R2000: | |
896 | case PROCESSOR_MIPS_R3000: | |
897 | case PROCESSOR_MIPS_R4000: | |
898 | arch = "mips"; | |
899 | break; | |
900 | #endif | |
901 | ||
902 | #ifdef PROCESSOR_ALPHA_21064 | |
903 | case PROCESSOR_ALPHA_21064: | |
904 | arch = "alpha"; | |
905 | break; | |
906 | #endif | |
907 | ||
908 | default: | |
909 | arch = "unknown"; | |
910 | break; | |
f332b293 | 911 | } |
480b0c5b | 912 | |
a302c7ae AI |
913 | /* Use the OEM field to reflect the compiler/library combination. */ |
914 | #ifdef _MSC_VER | |
915 | #define COMPILER_NAME "msvc" | |
916 | #else | |
917 | #ifdef __GNUC__ | |
918 | #define COMPILER_NAME "mingw" | |
919 | #else | |
920 | #define COMPILER_NAME "unknown" | |
921 | #endif | |
922 | #endif | |
923 | oem = COMPILER_NAME; | |
480b0c5b | 924 | |
c5247da2 GV |
925 | switch (osinfo_cache.dwPlatformId) { |
926 | case VER_PLATFORM_WIN32_NT: | |
927 | os = "nt"; | |
928 | build_num = osinfo_cache.dwBuildNumber; | |
929 | break; | |
930 | case VER_PLATFORM_WIN32_WINDOWS: | |
931 | if (osinfo_cache.dwMinorVersion == 0) { | |
932 | os = "windows95"; | |
933 | } else { | |
934 | os = "windows98"; | |
935 | } | |
936 | build_num = LOWORD (osinfo_cache.dwBuildNumber); | |
937 | break; | |
938 | case VER_PLATFORM_WIN32s: | |
939 | /* Not supported, should not happen. */ | |
940 | os = "windows32s"; | |
941 | build_num = LOWORD (osinfo_cache.dwBuildNumber); | |
942 | break; | |
943 | default: | |
944 | os = "unknown"; | |
945 | build_num = 0; | |
946 | break; | |
947 | } | |
948 | ||
949 | if (osinfo_cache.dwPlatformId == VER_PLATFORM_WIN32_NT) { | |
950 | sprintf (configuration_buffer, "%s-%s-%s%d.%d.%d", arch, oem, os, | |
951 | get_w32_major_version (), get_w32_minor_version (), build_num); | |
952 | } else { | |
953 | sprintf (configuration_buffer, "%s-%s-%s.%d", arch, oem, os, build_num); | |
954 | } | |
480b0c5b | 955 | |
480b0c5b | 956 | return configuration_buffer; |
f332b293 GV |
957 | } |
958 | ||
a302c7ae AI |
959 | char * |
960 | get_emacs_configuration_options (void) | |
961 | { | |
962 | static char options_buffer[256]; | |
963 | ||
964 | /* Work out the effective configure options for this build. */ | |
965 | #ifdef _MSC_VER | |
966 | #define COMPILER_VERSION "--with-msvc (%d.%02d)", _MSC_VER / 100, _MSC_VER % 100 | |
967 | #else | |
968 | #ifdef __GNUC__ | |
969 | #define COMPILER_VERSION "--with-gcc (%d.%d)", __GNUC__, __GNUC_MINOR__ | |
970 | #else | |
971 | #define COMPILER_VERSION "" | |
972 | #endif | |
973 | #endif | |
974 | ||
975 | sprintf (options_buffer, COMPILER_VERSION); | |
976 | #ifdef EMACSDEBUG | |
977 | strcat (options_buffer, " --no-opt"); | |
978 | #endif | |
979 | #ifdef USER_CFLAGS | |
980 | strcat (options_buffer, " --cflags"); | |
981 | strcat (options_buffer, USER_CFLAGS); | |
982 | #endif | |
983 | #ifdef USER_LDFLAGS | |
984 | strcat (options_buffer, " --ldflags"); | |
985 | strcat (options_buffer, USER_LDFLAGS); | |
986 | #endif | |
987 | return options_buffer; | |
988 | } | |
989 | ||
990 | ||
35f0d482 KH |
991 | #include <sys/timeb.h> |
992 | ||
993 | /* Emulate gettimeofday (Ulrich Leodolter, 1/11/95). */ | |
994 | void | |
995 | gettimeofday (struct timeval *tv, struct timezone *tz) | |
996 | { | |
a302c7ae | 997 | struct timeb tb; |
35f0d482 KH |
998 | _ftime (&tb); |
999 | ||
1000 | tv->tv_sec = tb.time; | |
1001 | tv->tv_usec = tb.millitm * 1000L; | |
1002 | if (tz) | |
1003 | { | |
1004 | tz->tz_minuteswest = tb.timezone; /* minutes west of Greenwich */ | |
1005 | tz->tz_dsttime = tb.dstflag; /* type of dst correction */ | |
1006 | } | |
1007 | } | |
35f0d482 | 1008 | |
480b0c5b | 1009 | /* ------------------------------------------------------------------------- */ |
fbd6baed | 1010 | /* IO support and wrapper functions for W32 API. */ |
480b0c5b | 1011 | /* ------------------------------------------------------------------------- */ |
95ed0025 | 1012 | |
480b0c5b GV |
1013 | /* Place a wrapper around the MSVC version of ctime. It returns NULL |
1014 | on network directories, so we handle that case here. | |
1015 | (Ulrich Leodolter, 1/11/95). */ | |
1016 | char * | |
1017 | sys_ctime (const time_t *t) | |
1018 | { | |
1019 | char *str = (char *) ctime (t); | |
1020 | return (str ? str : "Sun Jan 01 00:00:00 1970"); | |
1021 | } | |
1022 | ||
1023 | /* Emulate sleep...we could have done this with a define, but that | |
1024 | would necessitate including windows.h in the files that used it. | |
1025 | This is much easier. */ | |
1026 | void | |
1027 | sys_sleep (int seconds) | |
1028 | { | |
1029 | Sleep (seconds * 1000); | |
1030 | } | |
1031 | ||
76b3903d | 1032 | /* Internal MSVC functions for low-level descriptor munging */ |
480b0c5b GV |
1033 | extern int __cdecl _set_osfhnd (int fd, long h); |
1034 | extern int __cdecl _free_osfhnd (int fd); | |
1035 | ||
1036 | /* parallel array of private info on file handles */ | |
1037 | filedesc fd_info [ MAXDESC ]; | |
1038 | ||
76b3903d GV |
1039 | typedef struct volume_info_data { |
1040 | struct volume_info_data * next; | |
1041 | ||
1042 | /* time when info was obtained */ | |
1043 | DWORD timestamp; | |
1044 | ||
1045 | /* actual volume info */ | |
1046 | char * root_dir; | |
480b0c5b GV |
1047 | DWORD serialnum; |
1048 | DWORD maxcomp; | |
1049 | DWORD flags; | |
76b3903d GV |
1050 | char * name; |
1051 | char * type; | |
1052 | } volume_info_data; | |
1053 | ||
1054 | /* Global referenced by various functions. */ | |
1055 | static volume_info_data volume_info; | |
1056 | ||
1057 | /* Vector to indicate which drives are local and fixed (for which cached | |
1058 | data never expires). */ | |
1059 | static BOOL fixed_drives[26]; | |
1060 | ||
1061 | /* Consider cached volume information to be stale if older than 10s, | |
1062 | at least for non-local drives. Info for fixed drives is never stale. */ | |
1063 | #define DRIVE_INDEX( c ) ( (c) <= 'Z' ? (c) - 'A' : (c) - 'a' ) | |
1064 | #define VOLINFO_STILL_VALID( root_dir, info ) \ | |
1065 | ( ( isalpha (root_dir[0]) && \ | |
1066 | fixed_drives[ DRIVE_INDEX (root_dir[0]) ] ) \ | |
1067 | || GetTickCount () - info->timestamp < 10000 ) | |
1068 | ||
1069 | /* Cache support functions. */ | |
1070 | ||
1071 | /* Simple linked list with linear search is sufficient. */ | |
1072 | static volume_info_data *volume_cache = NULL; | |
1073 | ||
1074 | static volume_info_data * | |
1075 | lookup_volume_info (char * root_dir) | |
1076 | { | |
1077 | volume_info_data * info; | |
1078 | ||
1079 | for (info = volume_cache; info; info = info->next) | |
1080 | if (stricmp (info->root_dir, root_dir) == 0) | |
1081 | break; | |
1082 | return info; | |
1083 | } | |
1084 | ||
1085 | static void | |
1086 | add_volume_info (char * root_dir, volume_info_data * info) | |
1087 | { | |
a302c7ae | 1088 | info->root_dir = xstrdup (root_dir); |
76b3903d GV |
1089 | info->next = volume_cache; |
1090 | volume_cache = info; | |
1091 | } | |
1092 | ||
1093 | ||
1094 | /* Wrapper for GetVolumeInformation, which uses caching to avoid | |
1095 | performance penalty (~2ms on 486 for local drives, 7.5ms for local | |
1096 | cdrom drive, ~5-10ms or more for remote drives on LAN). */ | |
1097 | volume_info_data * | |
1098 | GetCachedVolumeInformation (char * root_dir) | |
1099 | { | |
1100 | volume_info_data * info; | |
1101 | char default_root[ MAX_PATH ]; | |
1102 | ||
1103 | /* NULL for root_dir means use root from current directory. */ | |
1104 | if (root_dir == NULL) | |
1105 | { | |
1106 | if (GetCurrentDirectory (MAX_PATH, default_root) == 0) | |
1107 | return NULL; | |
1108 | parse_root (default_root, &root_dir); | |
1109 | *root_dir = 0; | |
1110 | root_dir = default_root; | |
1111 | } | |
1112 | ||
1113 | /* Local fixed drives can be cached permanently. Removable drives | |
1114 | cannot be cached permanently, since the volume name and serial | |
1115 | number (if nothing else) can change. Remote drives should be | |
1116 | treated as if they are removable, since there is no sure way to | |
1117 | tell whether they are or not. Also, the UNC association of drive | |
1118 | letters mapped to remote volumes can be changed at any time (even | |
1119 | by other processes) without notice. | |
1120 | ||
1121 | As a compromise, so we can benefit from caching info for remote | |
1122 | volumes, we use a simple expiry mechanism to invalidate cache | |
1123 | entries that are more than ten seconds old. */ | |
1124 | ||
1125 | #if 0 | |
1126 | /* No point doing this, because WNetGetConnection is even slower than | |
1127 | GetVolumeInformation, consistently taking ~50ms on a 486 (FWIW, | |
1128 | GetDriveType is about the only call of this type which does not | |
1129 | involve network access, and so is extremely quick). */ | |
1130 | ||
1131 | /* Map drive letter to UNC if remote. */ | |
1132 | if ( isalpha( root_dir[0] ) && !fixed[ DRIVE_INDEX( root_dir[0] ) ] ) | |
1133 | { | |
1134 | char remote_name[ 256 ]; | |
1135 | char drive[3] = { root_dir[0], ':' }; | |
1136 | ||
1137 | if (WNetGetConnection (drive, remote_name, sizeof (remote_name)) | |
1138 | == NO_ERROR) | |
1139 | /* do something */ ; | |
1140 | } | |
1141 | #endif | |
1142 | ||
1143 | info = lookup_volume_info (root_dir); | |
1144 | ||
1145 | if (info == NULL || ! VOLINFO_STILL_VALID (root_dir, info)) | |
1146 | { | |
1147 | char name[ 256 ]; | |
1148 | DWORD serialnum; | |
1149 | DWORD maxcomp; | |
1150 | DWORD flags; | |
1151 | char type[ 256 ]; | |
1152 | ||
1153 | /* Info is not cached, or is stale. */ | |
1154 | if (!GetVolumeInformation (root_dir, | |
1155 | name, sizeof (name), | |
1156 | &serialnum, | |
1157 | &maxcomp, | |
1158 | &flags, | |
1159 | type, sizeof (type))) | |
1160 | return NULL; | |
1161 | ||
1162 | /* Cache the volume information for future use, overwriting existing | |
1163 | entry if present. */ | |
1164 | if (info == NULL) | |
1165 | { | |
1166 | info = (volume_info_data *) xmalloc (sizeof (volume_info_data)); | |
1167 | add_volume_info (root_dir, info); | |
1168 | } | |
1169 | else | |
1170 | { | |
a302c7ae AI |
1171 | xfree (info->name); |
1172 | xfree (info->type); | |
76b3903d GV |
1173 | } |
1174 | ||
a302c7ae | 1175 | info->name = xstrdup (name); |
76b3903d GV |
1176 | info->serialnum = serialnum; |
1177 | info->maxcomp = maxcomp; | |
1178 | info->flags = flags; | |
a302c7ae | 1179 | info->type = xstrdup (type); |
76b3903d GV |
1180 | info->timestamp = GetTickCount (); |
1181 | } | |
1182 | ||
1183 | return info; | |
1184 | } | |
480b0c5b GV |
1185 | |
1186 | /* Get information on the volume where name is held; set path pointer to | |
1187 | start of pathname in name (past UNC header\volume header if present). */ | |
1188 | int | |
1189 | get_volume_info (const char * name, const char ** pPath) | |
95ed0025 | 1190 | { |
480b0c5b GV |
1191 | char temp[MAX_PATH]; |
1192 | char *rootname = NULL; /* default to current volume */ | |
76b3903d | 1193 | volume_info_data * info; |
480b0c5b GV |
1194 | |
1195 | if (name == NULL) | |
1196 | return FALSE; | |
1197 | ||
1198 | /* find the root name of the volume if given */ | |
1199 | if (isalpha (name[0]) && name[1] == ':') | |
1200 | { | |
1201 | rootname = temp; | |
1202 | temp[0] = *name++; | |
1203 | temp[1] = *name++; | |
1204 | temp[2] = '\\'; | |
1205 | temp[3] = 0; | |
1206 | } | |
1207 | else if (IS_DIRECTORY_SEP (name[0]) && IS_DIRECTORY_SEP (name[1])) | |
95ed0025 | 1208 | { |
480b0c5b GV |
1209 | char *str = temp; |
1210 | int slashes = 4; | |
1211 | rootname = temp; | |
1212 | do | |
1213 | { | |
1214 | if (IS_DIRECTORY_SEP (*name) && --slashes == 0) | |
1215 | break; | |
1216 | *str++ = *name++; | |
1217 | } | |
1218 | while ( *name ); | |
1219 | ||
480b0c5b GV |
1220 | *str++ = '\\'; |
1221 | *str = 0; | |
95ed0025 | 1222 | } |
480b0c5b GV |
1223 | |
1224 | if (pPath) | |
1225 | *pPath = name; | |
1226 | ||
76b3903d GV |
1227 | info = GetCachedVolumeInformation (rootname); |
1228 | if (info != NULL) | |
95ed0025 | 1229 | { |
76b3903d GV |
1230 | /* Set global referenced by other functions. */ |
1231 | volume_info = *info; | |
480b0c5b | 1232 | return TRUE; |
95ed0025 | 1233 | } |
480b0c5b GV |
1234 | return FALSE; |
1235 | } | |
1236 | ||
1237 | /* Determine if volume is FAT format (ie. only supports short 8.3 | |
1238 | names); also set path pointer to start of pathname in name. */ | |
1239 | int | |
1240 | is_fat_volume (const char * name, const char ** pPath) | |
1241 | { | |
1242 | if (get_volume_info (name, pPath)) | |
1243 | return (volume_info.maxcomp == 12); | |
1244 | return FALSE; | |
1245 | } | |
1246 | ||
1247 | /* Map filename to a legal 8.3 name if necessary. */ | |
1248 | const char * | |
fbd6baed | 1249 | map_w32_filename (const char * name, const char ** pPath) |
480b0c5b GV |
1250 | { |
1251 | static char shortname[MAX_PATH]; | |
1252 | char * str = shortname; | |
1253 | char c; | |
480b0c5b | 1254 | char * path; |
76b3903d | 1255 | const char * save_name = name; |
480b0c5b | 1256 | |
ca149beb AI |
1257 | if (strlen (name) >= MAX_PATH) |
1258 | { | |
1259 | /* Return a filename which will cause callers to fail. */ | |
1260 | strcpy (shortname, "?"); | |
1261 | return shortname; | |
1262 | } | |
1263 | ||
a302c7ae | 1264 | if (is_fat_volume (name, (const char **)&path)) /* truncate to 8.3 */ |
95ed0025 | 1265 | { |
480b0c5b GV |
1266 | register int left = 8; /* maximum number of chars in part */ |
1267 | register int extn = 0; /* extension added? */ | |
1268 | register int dots = 2; /* maximum number of dots allowed */ | |
1269 | ||
1270 | while (name < path) | |
1271 | *str++ = *name++; /* skip past UNC header */ | |
1272 | ||
1273 | while ((c = *name++)) | |
1274 | { | |
1275 | switch ( c ) | |
1276 | { | |
1277 | case '\\': | |
1278 | case '/': | |
1279 | *str++ = '\\'; | |
1280 | extn = 0; /* reset extension flags */ | |
1281 | dots = 2; /* max 2 dots */ | |
1282 | left = 8; /* max length 8 for main part */ | |
1283 | break; | |
1284 | case ':': | |
1285 | *str++ = ':'; | |
1286 | extn = 0; /* reset extension flags */ | |
1287 | dots = 2; /* max 2 dots */ | |
1288 | left = 8; /* max length 8 for main part */ | |
1289 | break; | |
1290 | case '.': | |
1291 | if ( dots ) | |
1292 | { | |
1293 | /* Convert path components of the form .xxx to _xxx, | |
1294 | but leave . and .. as they are. This allows .emacs | |
1295 | to be read as _emacs, for example. */ | |
1296 | ||
1297 | if (! *name || | |
1298 | *name == '.' || | |
1299 | IS_DIRECTORY_SEP (*name)) | |
1300 | { | |
1301 | *str++ = '.'; | |
1302 | dots--; | |
1303 | } | |
1304 | else | |
1305 | { | |
1306 | *str++ = '_'; | |
1307 | left--; | |
1308 | dots = 0; | |
1309 | } | |
1310 | } | |
1311 | else if ( !extn ) | |
1312 | { | |
1313 | *str++ = '.'; | |
1314 | extn = 1; /* we've got an extension */ | |
1315 | left = 3; /* 3 chars in extension */ | |
1316 | } | |
1317 | else | |
1318 | { | |
1319 | /* any embedded dots after the first are converted to _ */ | |
1320 | *str++ = '_'; | |
1321 | } | |
1322 | break; | |
1323 | case '~': | |
1324 | case '#': /* don't lose these, they're important */ | |
1325 | if ( ! left ) | |
1326 | str[-1] = c; /* replace last character of part */ | |
1327 | /* FALLTHRU */ | |
1328 | default: | |
1329 | if ( left ) | |
1330 | { | |
1331 | *str++ = tolower (c); /* map to lower case (looks nicer) */ | |
1332 | left--; | |
1333 | dots = 0; /* started a path component */ | |
1334 | } | |
1335 | break; | |
1336 | } | |
1337 | } | |
1338 | *str = '\0'; | |
fc85cb29 RS |
1339 | } |
1340 | else | |
1341 | { | |
1342 | strcpy (shortname, name); | |
1343 | unixtodos_filename (shortname); | |
95ed0025 | 1344 | } |
480b0c5b GV |
1345 | |
1346 | if (pPath) | |
76b3903d | 1347 | *pPath = shortname + (path - save_name); |
480b0c5b | 1348 | |
fc85cb29 | 1349 | return shortname; |
480b0c5b GV |
1350 | } |
1351 | ||
b3308d2e KH |
1352 | static int |
1353 | is_exec (const char * name) | |
1354 | { | |
1355 | char * p = strrchr (name, '.'); | |
1356 | return | |
1357 | (p != NULL | |
1358 | && (stricmp (p, ".exe") == 0 || | |
1359 | stricmp (p, ".com") == 0 || | |
1360 | stricmp (p, ".bat") == 0 || | |
1361 | stricmp (p, ".cmd") == 0)); | |
1362 | } | |
1363 | ||
76b3903d GV |
1364 | /* Emulate the Unix directory procedures opendir, closedir, |
1365 | and readdir. We can't use the procedures supplied in sysdep.c, | |
1366 | so we provide them here. */ | |
1367 | ||
1368 | struct direct dir_static; /* simulated directory contents */ | |
1369 | static HANDLE dir_find_handle = INVALID_HANDLE_VALUE; | |
1370 | static int dir_is_fat; | |
1371 | static char dir_pathname[MAXPATHLEN+1]; | |
1372 | static WIN32_FIND_DATA dir_find_data; | |
1373 | ||
9d3355d1 GV |
1374 | /* Support shares on a network resource as subdirectories of a read-only |
1375 | root directory. */ | |
1376 | static HANDLE wnet_enum_handle = INVALID_HANDLE_VALUE; | |
1377 | HANDLE open_unc_volume (char *); | |
1378 | char *read_unc_volume (HANDLE, char *, int); | |
1379 | void close_unc_volume (HANDLE); | |
1380 | ||
76b3903d GV |
1381 | DIR * |
1382 | opendir (char *filename) | |
1383 | { | |
1384 | DIR *dirp; | |
1385 | ||
1386 | /* Opening is done by FindFirstFile. However, a read is inherent to | |
1387 | this operation, so we defer the open until read time. */ | |
1388 | ||
76b3903d GV |
1389 | if (dir_find_handle != INVALID_HANDLE_VALUE) |
1390 | return NULL; | |
9d3355d1 GV |
1391 | if (wnet_enum_handle != INVALID_HANDLE_VALUE) |
1392 | return NULL; | |
1393 | ||
1394 | if (is_unc_volume (filename)) | |
1395 | { | |
1396 | wnet_enum_handle = open_unc_volume (filename); | |
1397 | if (wnet_enum_handle == INVALID_HANDLE_VALUE) | |
1398 | return NULL; | |
1399 | } | |
1400 | ||
1401 | if (!(dirp = (DIR *) malloc (sizeof (DIR)))) | |
1402 | return NULL; | |
76b3903d GV |
1403 | |
1404 | dirp->dd_fd = 0; | |
1405 | dirp->dd_loc = 0; | |
1406 | dirp->dd_size = 0; | |
1407 | ||
1408 | strncpy (dir_pathname, map_w32_filename (filename, NULL), MAXPATHLEN); | |
1409 | dir_pathname[MAXPATHLEN] = '\0'; | |
1410 | dir_is_fat = is_fat_volume (filename, NULL); | |
1411 | ||
1412 | return dirp; | |
1413 | } | |
1414 | ||
1415 | void | |
1416 | closedir (DIR *dirp) | |
1417 | { | |
1418 | /* If we have a find-handle open, close it. */ | |
1419 | if (dir_find_handle != INVALID_HANDLE_VALUE) | |
1420 | { | |
1421 | FindClose (dir_find_handle); | |
1422 | dir_find_handle = INVALID_HANDLE_VALUE; | |
1423 | } | |
9d3355d1 GV |
1424 | else if (wnet_enum_handle != INVALID_HANDLE_VALUE) |
1425 | { | |
1426 | close_unc_volume (wnet_enum_handle); | |
1427 | wnet_enum_handle = INVALID_HANDLE_VALUE; | |
1428 | } | |
76b3903d GV |
1429 | xfree ((char *) dirp); |
1430 | } | |
1431 | ||
1432 | struct direct * | |
1433 | readdir (DIR *dirp) | |
1434 | { | |
9d3355d1 GV |
1435 | if (wnet_enum_handle != INVALID_HANDLE_VALUE) |
1436 | { | |
1437 | if (!read_unc_volume (wnet_enum_handle, | |
1438 | dir_find_data.cFileName, | |
1439 | MAX_PATH)) | |
1440 | return NULL; | |
1441 | } | |
76b3903d | 1442 | /* If we aren't dir_finding, do a find-first, otherwise do a find-next. */ |
9d3355d1 | 1443 | else if (dir_find_handle == INVALID_HANDLE_VALUE) |
76b3903d GV |
1444 | { |
1445 | char filename[MAXNAMLEN + 3]; | |
1446 | int ln; | |
1447 | ||
1448 | strcpy (filename, dir_pathname); | |
1449 | ln = strlen (filename) - 1; | |
1450 | if (!IS_DIRECTORY_SEP (filename[ln])) | |
1451 | strcat (filename, "\\"); | |
1452 | strcat (filename, "*"); | |
1453 | ||
1454 | dir_find_handle = FindFirstFile (filename, &dir_find_data); | |
1455 | ||
1456 | if (dir_find_handle == INVALID_HANDLE_VALUE) | |
1457 | return NULL; | |
1458 | } | |
1459 | else | |
1460 | { | |
1461 | if (!FindNextFile (dir_find_handle, &dir_find_data)) | |
1462 | return NULL; | |
1463 | } | |
1464 | ||
1465 | /* Emacs never uses this value, so don't bother making it match | |
1466 | value returned by stat(). */ | |
1467 | dir_static.d_ino = 1; | |
1468 | ||
1469 | dir_static.d_reclen = sizeof (struct direct) - MAXNAMLEN + 3 + | |
1470 | dir_static.d_namlen - dir_static.d_namlen % 4; | |
1471 | ||
1472 | dir_static.d_namlen = strlen (dir_find_data.cFileName); | |
1473 | strcpy (dir_static.d_name, dir_find_data.cFileName); | |
1474 | if (dir_is_fat) | |
1475 | _strlwr (dir_static.d_name); | |
1476 | else if (!NILP (Vw32_downcase_file_names)) | |
1477 | { | |
1478 | register char *p; | |
1479 | for (p = dir_static.d_name; *p; p++) | |
1480 | if (*p >= 'a' && *p <= 'z') | |
1481 | break; | |
1482 | if (!*p) | |
1483 | _strlwr (dir_static.d_name); | |
1484 | } | |
1485 | ||
1486 | return &dir_static; | |
1487 | } | |
1488 | ||
9d3355d1 GV |
1489 | HANDLE |
1490 | open_unc_volume (char *path) | |
1491 | { | |
1492 | NETRESOURCE nr; | |
1493 | HANDLE henum; | |
1494 | int result; | |
1495 | ||
1496 | nr.dwScope = RESOURCE_GLOBALNET; | |
1497 | nr.dwType = RESOURCETYPE_DISK; | |
1498 | nr.dwDisplayType = RESOURCEDISPLAYTYPE_SERVER; | |
1499 | nr.dwUsage = RESOURCEUSAGE_CONTAINER; | |
1500 | nr.lpLocalName = NULL; | |
1501 | nr.lpRemoteName = map_w32_filename (path, NULL); | |
1502 | nr.lpComment = NULL; | |
1503 | nr.lpProvider = NULL; | |
1504 | ||
1505 | result = WNetOpenEnum(RESOURCE_GLOBALNET, RESOURCETYPE_DISK, | |
1506 | RESOURCEUSAGE_CONNECTABLE, &nr, &henum); | |
1507 | ||
1508 | if (result == NO_ERROR) | |
1509 | return henum; | |
1510 | else | |
1511 | return INVALID_HANDLE_VALUE; | |
1512 | } | |
1513 | ||
1514 | char * | |
1515 | read_unc_volume (HANDLE henum, char *readbuf, int size) | |
1516 | { | |
a302c7ae | 1517 | DWORD count; |
9d3355d1 | 1518 | int result; |
a302c7ae | 1519 | DWORD bufsize = 512; |
9d3355d1 GV |
1520 | char *buffer; |
1521 | char *ptr; | |
1522 | ||
1523 | count = 1; | |
1524 | buffer = alloca (bufsize); | |
1525 | result = WNetEnumResource (wnet_enum_handle, &count, buffer, &bufsize); | |
1526 | if (result != NO_ERROR) | |
1527 | return NULL; | |
1528 | ||
1529 | /* WNetEnumResource returns \\resource\share...skip forward to "share". */ | |
1530 | ptr = ((LPNETRESOURCE) buffer)->lpRemoteName; | |
1531 | ptr += 2; | |
1532 | while (*ptr && !IS_DIRECTORY_SEP (*ptr)) ptr++; | |
1533 | ptr++; | |
1534 | ||
1535 | strncpy (readbuf, ptr, size); | |
1536 | return readbuf; | |
1537 | } | |
1538 | ||
1539 | void | |
1540 | close_unc_volume (HANDLE henum) | |
1541 | { | |
1542 | if (henum != INVALID_HANDLE_VALUE) | |
1543 | WNetCloseEnum (henum); | |
1544 | } | |
1545 | ||
1546 | DWORD | |
1547 | unc_volume_file_attributes (char *path) | |
1548 | { | |
1549 | HANDLE henum; | |
1550 | DWORD attrs; | |
1551 | ||
1552 | henum = open_unc_volume (path); | |
1553 | if (henum == INVALID_HANDLE_VALUE) | |
1554 | return -1; | |
1555 | ||
1556 | attrs = FILE_ATTRIBUTE_READONLY | FILE_ATTRIBUTE_DIRECTORY; | |
1557 | ||
1558 | close_unc_volume (henum); | |
1559 | ||
1560 | return attrs; | |
1561 | } | |
1562 | ||
480b0c5b GV |
1563 | |
1564 | /* Shadow some MSVC runtime functions to map requests for long filenames | |
1565 | to reasonable short names if necessary. This was originally added to | |
1566 | permit running Emacs on NT 3.1 on a FAT partition, which doesn't support | |
1567 | long file names. */ | |
1568 | ||
1569 | int | |
1570 | sys_access (const char * path, int mode) | |
1571 | { | |
b3308d2e KH |
1572 | DWORD attributes; |
1573 | ||
1574 | /* MSVC implementation doesn't recognize D_OK. */ | |
1575 | path = map_w32_filename (path, NULL); | |
9d3355d1 GV |
1576 | if (is_unc_volume (path)) |
1577 | { | |
1578 | attributes = unc_volume_file_attributes (path); | |
1579 | if (attributes == -1) { | |
1580 | errno = EACCES; | |
1581 | return -1; | |
1582 | } | |
1583 | } | |
1584 | else if ((attributes = GetFileAttributes (path)) == -1) | |
b3308d2e KH |
1585 | { |
1586 | /* Should try mapping GetLastError to errno; for now just indicate | |
1587 | that path doesn't exist. */ | |
1588 | errno = EACCES; | |
1589 | return -1; | |
1590 | } | |
1591 | if ((mode & X_OK) != 0 && !is_exec (path)) | |
1592 | { | |
1593 | errno = EACCES; | |
1594 | return -1; | |
1595 | } | |
1596 | if ((mode & W_OK) != 0 && (attributes & FILE_ATTRIBUTE_READONLY) != 0) | |
1597 | { | |
1598 | errno = EACCES; | |
1599 | return -1; | |
1600 | } | |
1601 | if ((mode & D_OK) != 0 && (attributes & FILE_ATTRIBUTE_DIRECTORY) == 0) | |
1602 | { | |
1603 | errno = EACCES; | |
1604 | return -1; | |
1605 | } | |
1606 | return 0; | |
480b0c5b GV |
1607 | } |
1608 | ||
1609 | int | |
1610 | sys_chdir (const char * path) | |
1611 | { | |
fbd6baed | 1612 | return _chdir (map_w32_filename (path, NULL)); |
480b0c5b GV |
1613 | } |
1614 | ||
1615 | int | |
1616 | sys_chmod (const char * path, int mode) | |
1617 | { | |
fbd6baed | 1618 | return _chmod (map_w32_filename (path, NULL), mode); |
480b0c5b GV |
1619 | } |
1620 | ||
1621 | int | |
1622 | sys_creat (const char * path, int mode) | |
1623 | { | |
fbd6baed | 1624 | return _creat (map_w32_filename (path, NULL), mode); |
480b0c5b GV |
1625 | } |
1626 | ||
1627 | FILE * | |
1628 | sys_fopen(const char * path, const char * mode) | |
1629 | { | |
1630 | int fd; | |
1631 | int oflag; | |
1632 | const char * mode_save = mode; | |
1633 | ||
1634 | /* Force all file handles to be non-inheritable. This is necessary to | |
1635 | ensure child processes don't unwittingly inherit handles that might | |
1636 | prevent future file access. */ | |
1637 | ||
1638 | if (mode[0] == 'r') | |
1639 | oflag = O_RDONLY; | |
1640 | else if (mode[0] == 'w' || mode[0] == 'a') | |
1641 | oflag = O_WRONLY | O_CREAT | O_TRUNC; | |
95ed0025 | 1642 | else |
480b0c5b GV |
1643 | return NULL; |
1644 | ||
1645 | /* Only do simplistic option parsing. */ | |
1646 | while (*++mode) | |
1647 | if (mode[0] == '+') | |
1648 | { | |
1649 | oflag &= ~(O_RDONLY | O_WRONLY); | |
1650 | oflag |= O_RDWR; | |
1651 | } | |
1652 | else if (mode[0] == 'b') | |
1653 | { | |
1654 | oflag &= ~O_TEXT; | |
1655 | oflag |= O_BINARY; | |
1656 | } | |
1657 | else if (mode[0] == 't') | |
1658 | { | |
1659 | oflag &= ~O_BINARY; | |
1660 | oflag |= O_TEXT; | |
1661 | } | |
1662 | else break; | |
1663 | ||
fbd6baed | 1664 | fd = _open (map_w32_filename (path, NULL), oflag | _O_NOINHERIT, 0644); |
480b0c5b GV |
1665 | if (fd < 0) |
1666 | return NULL; | |
1667 | ||
76b3903d | 1668 | return _fdopen (fd, mode_save); |
95ed0025 | 1669 | } |
480b0c5b | 1670 | |
76b3903d | 1671 | /* This only works on NTFS volumes, but is useful to have. */ |
480b0c5b | 1672 | int |
76b3903d | 1673 | sys_link (const char * old, const char * new) |
480b0c5b | 1674 | { |
76b3903d GV |
1675 | HANDLE fileh; |
1676 | int result = -1; | |
1677 | char oldname[MAX_PATH], newname[MAX_PATH]; | |
1678 | ||
1679 | if (old == NULL || new == NULL) | |
1680 | { | |
1681 | errno = ENOENT; | |
1682 | return -1; | |
1683 | } | |
1684 | ||
1685 | strcpy (oldname, map_w32_filename (old, NULL)); | |
1686 | strcpy (newname, map_w32_filename (new, NULL)); | |
1687 | ||
1688 | fileh = CreateFile (oldname, 0, 0, NULL, OPEN_EXISTING, | |
1689 | FILE_FLAG_BACKUP_SEMANTICS, NULL); | |
1690 | if (fileh != INVALID_HANDLE_VALUE) | |
1691 | { | |
1692 | int wlen; | |
1693 | ||
1694 | /* Confusingly, the "alternate" stream name field does not apply | |
1695 | when restoring a hard link, and instead contains the actual | |
1696 | stream data for the link (ie. the name of the link to create). | |
1697 | The WIN32_STREAM_ID structure before the cStreamName field is | |
1698 | the stream header, which is then immediately followed by the | |
1699 | stream data. */ | |
1700 | ||
1701 | struct { | |
1702 | WIN32_STREAM_ID wid; | |
1703 | WCHAR wbuffer[MAX_PATH]; /* extra space for link name */ | |
1704 | } data; | |
1705 | ||
1706 | wlen = MultiByteToWideChar (CP_ACP, MB_PRECOMPOSED, newname, -1, | |
1707 | data.wid.cStreamName, MAX_PATH); | |
1708 | if (wlen > 0) | |
1709 | { | |
1710 | LPVOID context = NULL; | |
1711 | DWORD wbytes = 0; | |
1712 | ||
1713 | data.wid.dwStreamId = BACKUP_LINK; | |
1714 | data.wid.dwStreamAttributes = 0; | |
1715 | data.wid.Size.LowPart = wlen * sizeof(WCHAR); | |
1716 | data.wid.Size.HighPart = 0; | |
1717 | data.wid.dwStreamNameSize = 0; | |
1718 | ||
1719 | if (BackupWrite (fileh, (LPBYTE)&data, | |
1720 | offsetof (WIN32_STREAM_ID, cStreamName) | |
1721 | + data.wid.Size.LowPart, | |
1722 | &wbytes, FALSE, FALSE, &context) | |
1723 | && BackupWrite (fileh, NULL, 0, &wbytes, TRUE, FALSE, &context)) | |
1724 | { | |
1725 | /* succeeded */ | |
1726 | result = 0; | |
1727 | } | |
1728 | else | |
1729 | { | |
1730 | /* Should try mapping GetLastError to errno; for now just | |
1731 | indicate a general error (eg. links not supported). */ | |
1732 | errno = EINVAL; // perhaps EMLINK? | |
1733 | } | |
1734 | } | |
1735 | ||
1736 | CloseHandle (fileh); | |
1737 | } | |
1738 | else | |
1739 | errno = ENOENT; | |
1740 | ||
1741 | return result; | |
480b0c5b GV |
1742 | } |
1743 | ||
1744 | int | |
1745 | sys_mkdir (const char * path) | |
1746 | { | |
fbd6baed | 1747 | return _mkdir (map_w32_filename (path, NULL)); |
480b0c5b GV |
1748 | } |
1749 | ||
9d1778b1 RS |
1750 | /* Because of long name mapping issues, we need to implement this |
1751 | ourselves. Also, MSVC's _mktemp returns NULL when it can't generate | |
1752 | a unique name, instead of setting the input template to an empty | |
1753 | string. | |
1754 | ||
1755 | Standard algorithm seems to be use pid or tid with a letter on the | |
1756 | front (in place of the 6 X's) and cycle through the letters to find a | |
1757 | unique name. We extend that to allow any reasonable character as the | |
1758 | first of the 6 X's. */ | |
480b0c5b GV |
1759 | char * |
1760 | sys_mktemp (char * template) | |
1761 | { | |
9d1778b1 RS |
1762 | char * p; |
1763 | int i; | |
1764 | unsigned uid = GetCurrentThreadId (); | |
1765 | static char first_char[] = "abcdefghijklmnopqrstuvwyz0123456789!%-_@#"; | |
1766 | ||
1767 | if (template == NULL) | |
1768 | return NULL; | |
1769 | p = template + strlen (template); | |
1770 | i = 5; | |
1771 | /* replace up to the last 5 X's with uid in decimal */ | |
1772 | while (--p >= template && p[0] == 'X' && --i >= 0) | |
1773 | { | |
1774 | p[0] = '0' + uid % 10; | |
1775 | uid /= 10; | |
1776 | } | |
1777 | ||
1778 | if (i < 0 && p[0] == 'X') | |
1779 | { | |
1780 | i = 0; | |
1781 | do | |
1782 | { | |
1783 | int save_errno = errno; | |
1784 | p[0] = first_char[i]; | |
1785 | if (sys_access (template, 0) < 0) | |
1786 | { | |
1787 | errno = save_errno; | |
1788 | return template; | |
1789 | } | |
1790 | } | |
1791 | while (++i < sizeof (first_char)); | |
1792 | } | |
1793 | ||
1794 | /* Template is badly formed or else we can't generate a unique name, | |
1795 | so return empty string */ | |
1796 | template[0] = 0; | |
1797 | return template; | |
480b0c5b GV |
1798 | } |
1799 | ||
1800 | int | |
1801 | sys_open (const char * path, int oflag, int mode) | |
1802 | { | |
1803 | /* Force all file handles to be non-inheritable. */ | |
fbd6baed | 1804 | return _open (map_w32_filename (path, NULL), oflag | _O_NOINHERIT, mode); |
480b0c5b GV |
1805 | } |
1806 | ||
1807 | int | |
1808 | sys_rename (const char * oldname, const char * newname) | |
1809 | { | |
eb9ea53f | 1810 | int result; |
b3308d2e | 1811 | char temp[MAX_PATH]; |
480b0c5b | 1812 | |
e9e23e23 | 1813 | /* MoveFile on Windows 95 doesn't correctly change the short file name |
5162ffce MB |
1814 | alias in a number of circumstances (it is not easy to predict when |
1815 | just by looking at oldname and newname, unfortunately). In these | |
1816 | cases, renaming through a temporary name avoids the problem. | |
1817 | ||
e9e23e23 | 1818 | A second problem on Windows 95 is that renaming through a temp name when |
5162ffce MB |
1819 | newname is uppercase fails (the final long name ends up in |
1820 | lowercase, although the short alias might be uppercase) UNLESS the | |
1821 | long temp name is not 8.3. | |
1822 | ||
e9e23e23 | 1823 | So, on Windows 95 we always rename through a temp name, and we make sure |
5162ffce | 1824 | the temp name has a long extension to ensure correct renaming. */ |
480b0c5b | 1825 | |
fbd6baed | 1826 | strcpy (temp, map_w32_filename (oldname, NULL)); |
480b0c5b | 1827 | |
76b3903d | 1828 | if (os_subtype == OS_WIN95) |
480b0c5b | 1829 | { |
b3308d2e | 1830 | char * o; |
480b0c5b | 1831 | char * p; |
b3308d2e KH |
1832 | int i = 0; |
1833 | ||
1834 | oldname = map_w32_filename (oldname, NULL); | |
1835 | if (o = strrchr (oldname, '\\')) | |
1836 | o++; | |
1837 | else | |
1838 | o = (char *) oldname; | |
480b0c5b | 1839 | |
480b0c5b GV |
1840 | if (p = strrchr (temp, '\\')) |
1841 | p++; | |
1842 | else | |
1843 | p = temp; | |
b3308d2e KH |
1844 | |
1845 | do | |
1846 | { | |
1847 | /* Force temp name to require a manufactured 8.3 alias - this | |
1848 | seems to make the second rename work properly. */ | |
f313ee82 | 1849 | sprintf (p, "_.%s.%u", o, i); |
b3308d2e | 1850 | i++; |
58f0cb7e | 1851 | result = rename (oldname, temp); |
b3308d2e KH |
1852 | } |
1853 | /* This loop must surely terminate! */ | |
f313ee82 | 1854 | while (result < 0 && (errno == EEXIST || errno == EACCES)); |
58f0cb7e | 1855 | if (result < 0) |
480b0c5b GV |
1856 | return -1; |
1857 | } | |
1858 | ||
1859 | /* Emulate Unix behaviour - newname is deleted if it already exists | |
5162ffce | 1860 | (at least if it is a file; don't do this for directories). |
76b3903d | 1861 | |
b3308d2e KH |
1862 | Since we mustn't do this if we are just changing the case of the |
1863 | file name (we would end up deleting the file we are trying to | |
1864 | rename!), we let rename detect if the destination file already | |
1865 | exists - that way we avoid the possible pitfalls of trying to | |
1866 | determine ourselves whether two names really refer to the same | |
1867 | file, which is not always possible in the general case. (Consider | |
1868 | all the permutations of shared or subst'd drives, etc.) */ | |
1869 | ||
1870 | newname = map_w32_filename (newname, NULL); | |
eb9ea53f | 1871 | result = rename (temp, newname); |
b3308d2e KH |
1872 | |
1873 | if (result < 0 | |
f313ee82 | 1874 | && (errno == EEXIST || errno == EACCES) |
b3308d2e KH |
1875 | && _chmod (newname, 0666) == 0 |
1876 | && _unlink (newname) == 0) | |
1877 | result = rename (temp, newname); | |
480b0c5b | 1878 | |
eb9ea53f | 1879 | return result; |
480b0c5b GV |
1880 | } |
1881 | ||
1882 | int | |
1883 | sys_rmdir (const char * path) | |
1884 | { | |
fbd6baed | 1885 | return _rmdir (map_w32_filename (path, NULL)); |
480b0c5b GV |
1886 | } |
1887 | ||
1888 | int | |
1889 | sys_unlink (const char * path) | |
1890 | { | |
16bb7578 GV |
1891 | path = map_w32_filename (path, NULL); |
1892 | ||
1893 | /* On Unix, unlink works without write permission. */ | |
1894 | _chmod (path, 0666); | |
1895 | return _unlink (path); | |
480b0c5b GV |
1896 | } |
1897 | ||
1898 | static FILETIME utc_base_ft; | |
1899 | static long double utc_base; | |
1900 | static int init = 0; | |
1901 | ||
1902 | static time_t | |
1903 | convert_time (FILETIME ft) | |
1904 | { | |
1905 | long double ret; | |
1906 | ||
1907 | if (!init) | |
1908 | { | |
1909 | /* Determine the delta between 1-Jan-1601 and 1-Jan-1970. */ | |
1910 | SYSTEMTIME st; | |
1911 | ||
1912 | st.wYear = 1970; | |
1913 | st.wMonth = 1; | |
1914 | st.wDay = 1; | |
1915 | st.wHour = 0; | |
1916 | st.wMinute = 0; | |
1917 | st.wSecond = 0; | |
1918 | st.wMilliseconds = 0; | |
1919 | ||
1920 | SystemTimeToFileTime (&st, &utc_base_ft); | |
1921 | utc_base = (long double) utc_base_ft.dwHighDateTime | |
1922 | * 4096 * 1024 * 1024 + utc_base_ft.dwLowDateTime; | |
1923 | init = 1; | |
1924 | } | |
1925 | ||
1926 | if (CompareFileTime (&ft, &utc_base_ft) < 0) | |
1927 | return 0; | |
1928 | ||
1929 | ret = (long double) ft.dwHighDateTime * 4096 * 1024 * 1024 + ft.dwLowDateTime; | |
1930 | ret -= utc_base; | |
1931 | return (time_t) (ret * 1e-7); | |
1932 | } | |
1933 | ||
480b0c5b GV |
1934 | void |
1935 | convert_from_time_t (time_t time, FILETIME * pft) | |
1936 | { | |
1937 | long double tmp; | |
1938 | ||
1939 | if (!init) | |
1940 | { | |
1941 | /* Determine the delta between 1-Jan-1601 and 1-Jan-1970. */ | |
1942 | SYSTEMTIME st; | |
1943 | ||
1944 | st.wYear = 1970; | |
1945 | st.wMonth = 1; | |
1946 | st.wDay = 1; | |
1947 | st.wHour = 0; | |
1948 | st.wMinute = 0; | |
1949 | st.wSecond = 0; | |
1950 | st.wMilliseconds = 0; | |
1951 | ||
1952 | SystemTimeToFileTime (&st, &utc_base_ft); | |
1953 | utc_base = (long double) utc_base_ft.dwHighDateTime | |
1954 | * 4096 * 1024 * 1024 + utc_base_ft.dwLowDateTime; | |
1955 | init = 1; | |
1956 | } | |
1957 | ||
1958 | /* time in 100ns units since 1-Jan-1601 */ | |
1959 | tmp = (long double) time * 1e7 + utc_base; | |
1960 | pft->dwHighDateTime = (DWORD) (tmp / (4096.0 * 1024 * 1024)); | |
16bb7578 | 1961 | pft->dwLowDateTime = (DWORD) (tmp - (4096.0 * 1024 * 1024) * pft->dwHighDateTime); |
480b0c5b | 1962 | } |
480b0c5b | 1963 | |
76b3903d GV |
1964 | #if 0 |
1965 | /* No reason to keep this; faking inode values either by hashing or even | |
1966 | using the file index from GetInformationByHandle, is not perfect and | |
1967 | so by default Emacs doesn't use the inode values on Windows. | |
1968 | Instead, we now determine file-truename correctly (except for | |
1969 | possible drive aliasing etc). */ | |
1970 | ||
1971 | /* Modified version of "PJW" algorithm (see the "Dragon" compiler book). */ | |
480b0c5b | 1972 | static unsigned |
76b3903d | 1973 | hashval (const unsigned char * str) |
480b0c5b GV |
1974 | { |
1975 | unsigned h = 0; | |
480b0c5b GV |
1976 | while (*str) |
1977 | { | |
1978 | h = (h << 4) + *str++; | |
76b3903d | 1979 | h ^= (h >> 28); |
480b0c5b GV |
1980 | } |
1981 | return h; | |
1982 | } | |
1983 | ||
1984 | /* Return the hash value of the canonical pathname, excluding the | |
1985 | drive/UNC header, to get a hopefully unique inode number. */ | |
76b3903d | 1986 | static DWORD |
480b0c5b GV |
1987 | generate_inode_val (const char * name) |
1988 | { | |
1989 | char fullname[ MAX_PATH ]; | |
1990 | char * p; | |
1991 | unsigned hash; | |
1992 | ||
76b3903d GV |
1993 | /* Get the truly canonical filename, if it exists. (Note: this |
1994 | doesn't resolve aliasing due to subst commands, or recognise hard | |
1995 | links. */ | |
1996 | if (!w32_get_long_filename ((char *)name, fullname, MAX_PATH)) | |
1997 | abort (); | |
1998 | ||
1999 | parse_root (fullname, &p); | |
fbd6baed | 2000 | /* Normal W32 filesystems are still case insensitive. */ |
480b0c5b | 2001 | _strlwr (p); |
76b3903d | 2002 | return hashval (p); |
480b0c5b GV |
2003 | } |
2004 | ||
76b3903d GV |
2005 | #endif |
2006 | ||
480b0c5b GV |
2007 | /* MSVC stat function can't cope with UNC names and has other bugs, so |
2008 | replace it with our own. This also allows us to calculate consistent | |
2009 | inode values without hacks in the main Emacs code. */ | |
2010 | int | |
2011 | stat (const char * path, struct stat * buf) | |
2012 | { | |
eb9ea53f | 2013 | char *name, *r; |
480b0c5b GV |
2014 | WIN32_FIND_DATA wfd; |
2015 | HANDLE fh; | |
76b3903d | 2016 | DWORD fake_inode; |
480b0c5b GV |
2017 | int permission; |
2018 | int len; | |
2019 | int rootdir = FALSE; | |
2020 | ||
2021 | if (path == NULL || buf == NULL) | |
2022 | { | |
2023 | errno = EFAULT; | |
2024 | return -1; | |
2025 | } | |
2026 | ||
fbd6baed | 2027 | name = (char *) map_w32_filename (path, &path); |
9ab8560d | 2028 | /* must be valid filename, no wild cards or other invalid characters */ |
bb1584c8 | 2029 | if (strpbrk (name, "*?|<>\"")) |
480b0c5b GV |
2030 | { |
2031 | errno = ENOENT; | |
2032 | return -1; | |
2033 | } | |
2034 | ||
eb9ea53f GV |
2035 | /* If name is "c:/.." or "/.." then stat "c:/" or "/". */ |
2036 | r = IS_DEVICE_SEP (name[1]) ? &name[2] : name; | |
2037 | if (IS_DIRECTORY_SEP (r[0]) && r[1] == '.' && r[2] == '.' && r[3] == '\0') | |
2038 | { | |
2039 | r[1] = r[2] = '\0'; | |
2040 | } | |
2041 | ||
480b0c5b GV |
2042 | /* Remove trailing directory separator, unless name is the root |
2043 | directory of a drive or UNC volume in which case ensure there | |
2044 | is a trailing separator. */ | |
2045 | len = strlen (name); | |
2046 | rootdir = (path >= name + len - 1 | |
2047 | && (IS_DIRECTORY_SEP (*path) || *path == 0)); | |
2048 | name = strcpy (alloca (len + 2), name); | |
2049 | ||
9d3355d1 GV |
2050 | if (is_unc_volume (name)) |
2051 | { | |
2052 | DWORD attrs = unc_volume_file_attributes (name); | |
2053 | ||
2054 | if (attrs == -1) | |
2055 | return -1; | |
2056 | ||
2057 | memset (&wfd, 0, sizeof (wfd)); | |
2058 | wfd.dwFileAttributes = attrs; | |
2059 | wfd.ftCreationTime = utc_base_ft; | |
2060 | wfd.ftLastAccessTime = utc_base_ft; | |
2061 | wfd.ftLastWriteTime = utc_base_ft; | |
2062 | strcpy (wfd.cFileName, name); | |
2063 | } | |
2064 | else if (rootdir) | |
480b0c5b GV |
2065 | { |
2066 | if (!IS_DIRECTORY_SEP (name[len-1])) | |
2067 | strcat (name, "\\"); | |
2068 | if (GetDriveType (name) < 2) | |
2069 | { | |
2070 | errno = ENOENT; | |
2071 | return -1; | |
2072 | } | |
2073 | memset (&wfd, 0, sizeof (wfd)); | |
2074 | wfd.dwFileAttributes = FILE_ATTRIBUTE_DIRECTORY; | |
2075 | wfd.ftCreationTime = utc_base_ft; | |
2076 | wfd.ftLastAccessTime = utc_base_ft; | |
2077 | wfd.ftLastWriteTime = utc_base_ft; | |
2078 | strcpy (wfd.cFileName, name); | |
2079 | } | |
2080 | else | |
2081 | { | |
2082 | if (IS_DIRECTORY_SEP (name[len-1])) | |
2083 | name[len - 1] = 0; | |
76b3903d GV |
2084 | |
2085 | /* (This is hacky, but helps when doing file completions on | |
2086 | network drives.) Optimize by using information available from | |
2087 | active readdir if possible. */ | |
b19cc00c GV |
2088 | len = strlen (dir_pathname); |
2089 | if (IS_DIRECTORY_SEP (dir_pathname[len-1])) | |
2090 | len--; | |
76b3903d | 2091 | if (dir_find_handle != INVALID_HANDLE_VALUE |
b19cc00c | 2092 | && strnicmp (name, dir_pathname, len) == 0 |
76b3903d GV |
2093 | && IS_DIRECTORY_SEP (name[len]) |
2094 | && stricmp (name + len + 1, dir_static.d_name) == 0) | |
480b0c5b | 2095 | { |
76b3903d GV |
2096 | /* This was the last entry returned by readdir. */ |
2097 | wfd = dir_find_data; | |
2098 | } | |
2099 | else | |
2100 | { | |
2101 | fh = FindFirstFile (name, &wfd); | |
2102 | if (fh == INVALID_HANDLE_VALUE) | |
2103 | { | |
2104 | errno = ENOENT; | |
2105 | return -1; | |
2106 | } | |
2107 | FindClose (fh); | |
480b0c5b | 2108 | } |
480b0c5b GV |
2109 | } |
2110 | ||
2111 | if (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) | |
2112 | { | |
2113 | buf->st_mode = _S_IFDIR; | |
2114 | buf->st_nlink = 2; /* doesn't really matter */ | |
76b3903d | 2115 | fake_inode = 0; /* this doesn't either I think */ |
480b0c5b | 2116 | } |
710ea1b8 RS |
2117 | else if (!NILP (Vw32_get_true_file_attributes) |
2118 | /* No access rights required to get info. */ | |
2119 | && (fh = CreateFile (name, 0, 0, NULL, OPEN_EXISTING, 0, NULL)) | |
2120 | != INVALID_HANDLE_VALUE) | |
480b0c5b | 2121 | { |
480b0c5b GV |
2122 | /* This is more accurate in terms of gettting the correct number |
2123 | of links, but is quite slow (it is noticable when Emacs is | |
2124 | making a list of file name completions). */ | |
2125 | BY_HANDLE_FILE_INFORMATION info; | |
2126 | ||
480b0c5b GV |
2127 | if (GetFileInformationByHandle (fh, &info)) |
2128 | { | |
480b0c5b | 2129 | buf->st_nlink = info.nNumberOfLinks; |
76b3903d GV |
2130 | /* Might as well use file index to fake inode values, but this |
2131 | is not guaranteed to be unique unless we keep a handle open | |
2132 | all the time (even then there are situations where it is | |
2133 | not unique). Reputedly, there are at most 48 bits of info | |
2134 | (on NTFS, presumably less on FAT). */ | |
2135 | fake_inode = info.nFileIndexLow ^ info.nFileIndexHigh; | |
480b0c5b GV |
2136 | } |
2137 | else | |
2138 | { | |
01f31dfb AI |
2139 | buf->st_nlink = 1; |
2140 | fake_inode = 0; | |
2141 | } | |
2142 | ||
2143 | switch (GetFileType (fh)) | |
2144 | { | |
2145 | case FILE_TYPE_DISK: | |
2146 | buf->st_mode = _S_IFREG; | |
2147 | break; | |
2148 | case FILE_TYPE_PIPE: | |
2149 | buf->st_mode = _S_IFIFO; | |
2150 | break; | |
2151 | case FILE_TYPE_CHAR: | |
2152 | case FILE_TYPE_UNKNOWN: | |
2153 | default: | |
2154 | buf->st_mode = _S_IFCHR; | |
480b0c5b | 2155 | } |
01f31dfb | 2156 | CloseHandle (fh); |
76b3903d GV |
2157 | } |
2158 | else | |
2159 | { | |
2160 | /* Don't bother to make this information more accurate. */ | |
480b0c5b GV |
2161 | buf->st_mode = _S_IFREG; |
2162 | buf->st_nlink = 1; | |
76b3903d GV |
2163 | fake_inode = 0; |
2164 | } | |
2165 | ||
2166 | #if 0 | |
2167 | /* Not sure if there is any point in this. */ | |
2168 | if (!NILP (Vw32_generate_fake_inodes)) | |
2169 | fake_inode = generate_inode_val (name); | |
2170 | else if (fake_inode == 0) | |
2171 | { | |
2172 | /* For want of something better, try to make everything unique. */ | |
2173 | static DWORD gen_num = 0; | |
2174 | fake_inode = ++gen_num; | |
480b0c5b | 2175 | } |
76b3903d GV |
2176 | #endif |
2177 | ||
2178 | /* MSVC defines _ino_t to be short; other libc's might not. */ | |
2179 | if (sizeof (buf->st_ino) == 2) | |
2180 | buf->st_ino = fake_inode ^ (fake_inode >> 16); | |
2181 | else | |
2182 | buf->st_ino = fake_inode; | |
480b0c5b GV |
2183 | |
2184 | /* consider files to belong to current user */ | |
2185 | buf->st_uid = the_passwd.pw_uid; | |
2186 | buf->st_gid = the_passwd.pw_gid; | |
2187 | ||
fbd6baed | 2188 | /* volume_info is set indirectly by map_w32_filename */ |
480b0c5b GV |
2189 | buf->st_dev = volume_info.serialnum; |
2190 | buf->st_rdev = volume_info.serialnum; | |
2191 | ||
480b0c5b GV |
2192 | |
2193 | buf->st_size = wfd.nFileSizeLow; | |
2194 | ||
2195 | /* Convert timestamps to Unix format. */ | |
2196 | buf->st_mtime = convert_time (wfd.ftLastWriteTime); | |
2197 | buf->st_atime = convert_time (wfd.ftLastAccessTime); | |
2198 | if (buf->st_atime == 0) buf->st_atime = buf->st_mtime; | |
2199 | buf->st_ctime = convert_time (wfd.ftCreationTime); | |
2200 | if (buf->st_ctime == 0) buf->st_ctime = buf->st_mtime; | |
2201 | ||
2202 | /* determine rwx permissions */ | |
2203 | if (wfd.dwFileAttributes & FILE_ATTRIBUTE_READONLY) | |
2204 | permission = _S_IREAD; | |
2205 | else | |
2206 | permission = _S_IREAD | _S_IWRITE; | |
2207 | ||
2208 | if (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) | |
2209 | permission |= _S_IEXEC; | |
b3308d2e KH |
2210 | else if (is_exec (name)) |
2211 | permission |= _S_IEXEC; | |
480b0c5b GV |
2212 | |
2213 | buf->st_mode |= permission | (permission >> 3) | (permission >> 6); | |
2214 | ||
2215 | return 0; | |
2216 | } | |
2217 | ||
16bb7578 GV |
2218 | /* Provide fstat and utime as well as stat for consistent handling of |
2219 | file timestamps. */ | |
2220 | int | |
2221 | fstat (int desc, struct stat * buf) | |
2222 | { | |
2223 | HANDLE fh = (HANDLE) _get_osfhandle (desc); | |
2224 | BY_HANDLE_FILE_INFORMATION info; | |
2225 | DWORD fake_inode; | |
2226 | int permission; | |
2227 | ||
2228 | switch (GetFileType (fh) & ~FILE_TYPE_REMOTE) | |
2229 | { | |
2230 | case FILE_TYPE_DISK: | |
2231 | buf->st_mode = _S_IFREG; | |
2232 | if (!GetFileInformationByHandle (fh, &info)) | |
2233 | { | |
2234 | errno = EACCES; | |
2235 | return -1; | |
2236 | } | |
2237 | break; | |
2238 | case FILE_TYPE_PIPE: | |
2239 | buf->st_mode = _S_IFIFO; | |
2240 | goto non_disk; | |
2241 | case FILE_TYPE_CHAR: | |
2242 | case FILE_TYPE_UNKNOWN: | |
2243 | default: | |
2244 | buf->st_mode = _S_IFCHR; | |
2245 | non_disk: | |
2246 | memset (&info, 0, sizeof (info)); | |
2247 | info.dwFileAttributes = 0; | |
2248 | info.ftCreationTime = utc_base_ft; | |
2249 | info.ftLastAccessTime = utc_base_ft; | |
2250 | info.ftLastWriteTime = utc_base_ft; | |
2251 | } | |
2252 | ||
2253 | if (info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) | |
2254 | { | |
2255 | buf->st_mode = _S_IFDIR; | |
2256 | buf->st_nlink = 2; /* doesn't really matter */ | |
2257 | fake_inode = 0; /* this doesn't either I think */ | |
2258 | } | |
2259 | else | |
2260 | { | |
2261 | buf->st_nlink = info.nNumberOfLinks; | |
2262 | /* Might as well use file index to fake inode values, but this | |
2263 | is not guaranteed to be unique unless we keep a handle open | |
2264 | all the time (even then there are situations where it is | |
2265 | not unique). Reputedly, there are at most 48 bits of info | |
2266 | (on NTFS, presumably less on FAT). */ | |
2267 | fake_inode = info.nFileIndexLow ^ info.nFileIndexHigh; | |
2268 | } | |
2269 | ||
2270 | /* MSVC defines _ino_t to be short; other libc's might not. */ | |
2271 | if (sizeof (buf->st_ino) == 2) | |
2272 | buf->st_ino = fake_inode ^ (fake_inode >> 16); | |
2273 | else | |
2274 | buf->st_ino = fake_inode; | |
2275 | ||
2276 | /* consider files to belong to current user */ | |
2277 | buf->st_uid = 0; | |
2278 | buf->st_gid = 0; | |
2279 | ||
2280 | buf->st_dev = info.dwVolumeSerialNumber; | |
2281 | buf->st_rdev = info.dwVolumeSerialNumber; | |
2282 | ||
2283 | buf->st_size = info.nFileSizeLow; | |
2284 | ||
2285 | /* Convert timestamps to Unix format. */ | |
2286 | buf->st_mtime = convert_time (info.ftLastWriteTime); | |
2287 | buf->st_atime = convert_time (info.ftLastAccessTime); | |
2288 | if (buf->st_atime == 0) buf->st_atime = buf->st_mtime; | |
2289 | buf->st_ctime = convert_time (info.ftCreationTime); | |
2290 | if (buf->st_ctime == 0) buf->st_ctime = buf->st_mtime; | |
2291 | ||
2292 | /* determine rwx permissions */ | |
2293 | if (info.dwFileAttributes & FILE_ATTRIBUTE_READONLY) | |
2294 | permission = _S_IREAD; | |
2295 | else | |
2296 | permission = _S_IREAD | _S_IWRITE; | |
2297 | ||
2298 | if (info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) | |
2299 | permission |= _S_IEXEC; | |
2300 | else | |
2301 | { | |
2302 | #if 0 /* no way of knowing the filename */ | |
2303 | char * p = strrchr (name, '.'); | |
2304 | if (p != NULL && | |
2305 | (stricmp (p, ".exe") == 0 || | |
2306 | stricmp (p, ".com") == 0 || | |
2307 | stricmp (p, ".bat") == 0 || | |
2308 | stricmp (p, ".cmd") == 0)) | |
2309 | permission |= _S_IEXEC; | |
2310 | #endif | |
2311 | } | |
2312 | ||
2313 | buf->st_mode |= permission | (permission >> 3) | (permission >> 6); | |
2314 | ||
2315 | return 0; | |
2316 | } | |
2317 | ||
2318 | int | |
2319 | utime (const char *name, struct utimbuf *times) | |
2320 | { | |
2321 | struct utimbuf deftime; | |
2322 | HANDLE fh; | |
2323 | FILETIME mtime; | |
2324 | FILETIME atime; | |
2325 | ||
2326 | if (times == NULL) | |
2327 | { | |
2328 | deftime.modtime = deftime.actime = time (NULL); | |
2329 | times = &deftime; | |
2330 | } | |
2331 | ||
2332 | /* Need write access to set times. */ | |
2333 | fh = CreateFile (name, GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, | |
2334 | 0, OPEN_EXISTING, 0, NULL); | |
2335 | if (fh) | |
2336 | { | |
2337 | convert_from_time_t (times->actime, &atime); | |
2338 | convert_from_time_t (times->modtime, &mtime); | |
2339 | if (!SetFileTime (fh, NULL, &atime, &mtime)) | |
2340 | { | |
2341 | CloseHandle (fh); | |
2342 | errno = EACCES; | |
2343 | return -1; | |
2344 | } | |
2345 | CloseHandle (fh); | |
2346 | } | |
2347 | else | |
2348 | { | |
2349 | errno = EINVAL; | |
2350 | return -1; | |
2351 | } | |
2352 | return 0; | |
2353 | } | |
2354 | ||
480b0c5b GV |
2355 | #ifdef HAVE_SOCKETS |
2356 | ||
2357 | /* Wrappers for winsock functions to map between our file descriptors | |
2358 | and winsock's handles; also set h_errno for convenience. | |
2359 | ||
2360 | To allow Emacs to run on systems which don't have winsock support | |
2361 | installed, we dynamically link to winsock on startup if present, and | |
2362 | otherwise provide the minimum necessary functionality | |
2363 | (eg. gethostname). */ | |
2364 | ||
2365 | /* function pointers for relevant socket functions */ | |
2366 | int (PASCAL *pfn_WSAStartup) (WORD wVersionRequired, LPWSADATA lpWSAData); | |
2367 | void (PASCAL *pfn_WSASetLastError) (int iError); | |
2368 | int (PASCAL *pfn_WSAGetLastError) (void); | |
2369 | int (PASCAL *pfn_socket) (int af, int type, int protocol); | |
2370 | int (PASCAL *pfn_bind) (SOCKET s, const struct sockaddr *addr, int namelen); | |
2371 | int (PASCAL *pfn_connect) (SOCKET s, const struct sockaddr *addr, int namelen); | |
2372 | int (PASCAL *pfn_ioctlsocket) (SOCKET s, long cmd, u_long *argp); | |
2373 | int (PASCAL *pfn_recv) (SOCKET s, char * buf, int len, int flags); | |
2374 | int (PASCAL *pfn_send) (SOCKET s, const char * buf, int len, int flags); | |
2375 | int (PASCAL *pfn_closesocket) (SOCKET s); | |
2376 | int (PASCAL *pfn_shutdown) (SOCKET s, int how); | |
2377 | int (PASCAL *pfn_WSACleanup) (void); | |
2378 | ||
2379 | u_short (PASCAL *pfn_htons) (u_short hostshort); | |
2380 | u_short (PASCAL *pfn_ntohs) (u_short netshort); | |
2381 | unsigned long (PASCAL *pfn_inet_addr) (const char * cp); | |
2382 | int (PASCAL *pfn_gethostname) (char * name, int namelen); | |
2383 | struct hostent * (PASCAL *pfn_gethostbyname) (const char * name); | |
2384 | struct servent * (PASCAL *pfn_getservbyname) (const char * name, const char * proto); | |
f1614061 RS |
2385 | |
2386 | /* SetHandleInformation is only needed to make sockets non-inheritable. */ | |
2387 | BOOL (WINAPI *pfn_SetHandleInformation) (HANDLE object, DWORD mask, DWORD flags); | |
2388 | #ifndef HANDLE_FLAG_INHERIT | |
2389 | #define HANDLE_FLAG_INHERIT 1 | |
2390 | #endif | |
480b0c5b | 2391 | |
f249a012 RS |
2392 | HANDLE winsock_lib; |
2393 | static int winsock_inuse; | |
480b0c5b | 2394 | |
f249a012 | 2395 | BOOL |
480b0c5b GV |
2396 | term_winsock (void) |
2397 | { | |
f249a012 | 2398 | if (winsock_lib != NULL && winsock_inuse == 0) |
480b0c5b | 2399 | { |
f249a012 RS |
2400 | /* Not sure what would cause WSAENETDOWN, or even if it can happen |
2401 | after WSAStartup returns successfully, but it seems reasonable | |
2402 | to allow unloading winsock anyway in that case. */ | |
2403 | if (pfn_WSACleanup () == 0 || | |
2404 | pfn_WSAGetLastError () == WSAENETDOWN) | |
2405 | { | |
2406 | if (FreeLibrary (winsock_lib)) | |
2407 | winsock_lib = NULL; | |
2408 | return TRUE; | |
2409 | } | |
480b0c5b | 2410 | } |
f249a012 | 2411 | return FALSE; |
480b0c5b GV |
2412 | } |
2413 | ||
f249a012 RS |
2414 | BOOL |
2415 | init_winsock (int load_now) | |
480b0c5b GV |
2416 | { |
2417 | WSADATA winsockData; | |
2418 | ||
f249a012 RS |
2419 | if (winsock_lib != NULL) |
2420 | return TRUE; | |
f1614061 RS |
2421 | |
2422 | pfn_SetHandleInformation = NULL; | |
2423 | pfn_SetHandleInformation | |
2424 | = (void *) GetProcAddress (GetModuleHandle ("kernel32.dll"), | |
2425 | "SetHandleInformation"); | |
2426 | ||
480b0c5b GV |
2427 | winsock_lib = LoadLibrary ("wsock32.dll"); |
2428 | ||
2429 | if (winsock_lib != NULL) | |
2430 | { | |
2431 | /* dynamically link to socket functions */ | |
2432 | ||
2433 | #define LOAD_PROC(fn) \ | |
2434 | if ((pfn_##fn = (void *) GetProcAddress (winsock_lib, #fn)) == NULL) \ | |
2435 | goto fail; | |
2436 | ||
2437 | LOAD_PROC( WSAStartup ); | |
2438 | LOAD_PROC( WSASetLastError ); | |
2439 | LOAD_PROC( WSAGetLastError ); | |
2440 | LOAD_PROC( socket ); | |
2441 | LOAD_PROC( bind ); | |
2442 | LOAD_PROC( connect ); | |
2443 | LOAD_PROC( ioctlsocket ); | |
2444 | LOAD_PROC( recv ); | |
2445 | LOAD_PROC( send ); | |
2446 | LOAD_PROC( closesocket ); | |
2447 | LOAD_PROC( shutdown ); | |
2448 | LOAD_PROC( htons ); | |
2449 | LOAD_PROC( ntohs ); | |
2450 | LOAD_PROC( inet_addr ); | |
2451 | LOAD_PROC( gethostname ); | |
2452 | LOAD_PROC( gethostbyname ); | |
2453 | LOAD_PROC( getservbyname ); | |
2454 | LOAD_PROC( WSACleanup ); | |
2455 | ||
f249a012 RS |
2456 | #undef LOAD_PROC |
2457 | ||
480b0c5b GV |
2458 | /* specify version 1.1 of winsock */ |
2459 | if (pfn_WSAStartup (0x101, &winsockData) == 0) | |
2460 | { | |
f249a012 RS |
2461 | if (winsockData.wVersion != 0x101) |
2462 | goto fail; | |
2463 | ||
2464 | if (!load_now) | |
2465 | { | |
2466 | /* Report that winsock exists and is usable, but leave | |
2467 | socket functions disabled. I am assuming that calling | |
2468 | WSAStartup does not require any network interaction, | |
2469 | and in particular does not cause or require a dial-up | |
2470 | connection to be established. */ | |
2471 | ||
2472 | pfn_WSACleanup (); | |
2473 | FreeLibrary (winsock_lib); | |
2474 | winsock_lib = NULL; | |
2475 | } | |
2476 | winsock_inuse = 0; | |
2477 | return TRUE; | |
480b0c5b GV |
2478 | } |
2479 | ||
2480 | fail: | |
2481 | FreeLibrary (winsock_lib); | |
f249a012 | 2482 | winsock_lib = NULL; |
480b0c5b | 2483 | } |
f249a012 RS |
2484 | |
2485 | return FALSE; | |
480b0c5b GV |
2486 | } |
2487 | ||
2488 | ||
2489 | int h_errno = 0; | |
2490 | ||
2491 | /* function to set h_errno for compatability; map winsock error codes to | |
2492 | normal system codes where they overlap (non-overlapping definitions | |
2493 | are already in <sys/socket.h> */ | |
2494 | static void set_errno () | |
2495 | { | |
f249a012 | 2496 | if (winsock_lib == NULL) |
480b0c5b GV |
2497 | h_errno = EINVAL; |
2498 | else | |
2499 | h_errno = pfn_WSAGetLastError (); | |
2500 | ||
2501 | switch (h_errno) | |
2502 | { | |
2503 | case WSAEACCES: h_errno = EACCES; break; | |
2504 | case WSAEBADF: h_errno = EBADF; break; | |
2505 | case WSAEFAULT: h_errno = EFAULT; break; | |
2506 | case WSAEINTR: h_errno = EINTR; break; | |
2507 | case WSAEINVAL: h_errno = EINVAL; break; | |
2508 | case WSAEMFILE: h_errno = EMFILE; break; | |
2509 | case WSAENAMETOOLONG: h_errno = ENAMETOOLONG; break; | |
2510 | case WSAENOTEMPTY: h_errno = ENOTEMPTY; break; | |
2511 | } | |
2512 | errno = h_errno; | |
2513 | } | |
2514 | ||
2515 | static void check_errno () | |
2516 | { | |
f249a012 | 2517 | if (h_errno == 0 && winsock_lib != NULL) |
480b0c5b GV |
2518 | pfn_WSASetLastError (0); |
2519 | } | |
2520 | ||
d8fcc1b9 AI |
2521 | /* Extend strerror to handle the winsock-specific error codes. */ |
2522 | struct { | |
2523 | int errnum; | |
2524 | char * msg; | |
2525 | } _wsa_errlist[] = { | |
2526 | WSAEINTR , "Interrupted function call", | |
2527 | WSAEBADF , "Bad file descriptor", | |
2528 | WSAEACCES , "Permission denied", | |
2529 | WSAEFAULT , "Bad address", | |
2530 | WSAEINVAL , "Invalid argument", | |
2531 | WSAEMFILE , "Too many open files", | |
2532 | ||
2533 | WSAEWOULDBLOCK , "Resource temporarily unavailable", | |
2534 | WSAEINPROGRESS , "Operation now in progress", | |
2535 | WSAEALREADY , "Operation already in progress", | |
2536 | WSAENOTSOCK , "Socket operation on non-socket", | |
2537 | WSAEDESTADDRREQ , "Destination address required", | |
2538 | WSAEMSGSIZE , "Message too long", | |
2539 | WSAEPROTOTYPE , "Protocol wrong type for socket", | |
2540 | WSAENOPROTOOPT , "Bad protocol option", | |
2541 | WSAEPROTONOSUPPORT , "Protocol not supported", | |
2542 | WSAESOCKTNOSUPPORT , "Socket type not supported", | |
2543 | WSAEOPNOTSUPP , "Operation not supported", | |
2544 | WSAEPFNOSUPPORT , "Protocol family not supported", | |
2545 | WSAEAFNOSUPPORT , "Address family not supported by protocol family", | |
2546 | WSAEADDRINUSE , "Address already in use", | |
2547 | WSAEADDRNOTAVAIL , "Cannot assign requested address", | |
2548 | WSAENETDOWN , "Network is down", | |
2549 | WSAENETUNREACH , "Network is unreachable", | |
2550 | WSAENETRESET , "Network dropped connection on reset", | |
2551 | WSAECONNABORTED , "Software caused connection abort", | |
2552 | WSAECONNRESET , "Connection reset by peer", | |
2553 | WSAENOBUFS , "No buffer space available", | |
2554 | WSAEISCONN , "Socket is already connected", | |
2555 | WSAENOTCONN , "Socket is not connected", | |
2556 | WSAESHUTDOWN , "Cannot send after socket shutdown", | |
2557 | WSAETOOMANYREFS , "Too many references", /* not sure */ | |
2558 | WSAETIMEDOUT , "Connection timed out", | |
2559 | WSAECONNREFUSED , "Connection refused", | |
2560 | WSAELOOP , "Network loop", /* not sure */ | |
2561 | WSAENAMETOOLONG , "Name is too long", | |
2562 | WSAEHOSTDOWN , "Host is down", | |
2563 | WSAEHOSTUNREACH , "No route to host", | |
2564 | WSAENOTEMPTY , "Buffer not empty", /* not sure */ | |
2565 | WSAEPROCLIM , "Too many processes", | |
2566 | WSAEUSERS , "Too many users", /* not sure */ | |
2567 | WSAEDQUOT , "Double quote in host name", /* really not sure */ | |
2568 | WSAESTALE , "Data is stale", /* not sure */ | |
2569 | WSAEREMOTE , "Remote error", /* not sure */ | |
2570 | ||
2571 | WSASYSNOTREADY , "Network subsystem is unavailable", | |
2572 | WSAVERNOTSUPPORTED , "WINSOCK.DLL version out of range", | |
2573 | WSANOTINITIALISED , "Winsock not initialized successfully", | |
2574 | WSAEDISCON , "Graceful shutdown in progress", | |
2575 | #ifdef WSAENOMORE | |
2576 | WSAENOMORE , "No more operations allowed", /* not sure */ | |
2577 | WSAECANCELLED , "Operation cancelled", /* not sure */ | |
2578 | WSAEINVALIDPROCTABLE , "Invalid procedure table from service provider", | |
2579 | WSAEINVALIDPROVIDER , "Invalid service provider version number", | |
2580 | WSAEPROVIDERFAILEDINIT , "Unable to initialize a service provider", | |
2581 | WSASYSCALLFAILURE , "System call failured", | |
2582 | WSASERVICE_NOT_FOUND , "Service not found", /* not sure */ | |
2583 | WSATYPE_NOT_FOUND , "Class type not found", | |
2584 | WSA_E_NO_MORE , "No more resources available", /* really not sure */ | |
2585 | WSA_E_CANCELLED , "Operation already cancelled", /* really not sure */ | |
2586 | WSAEREFUSED , "Operation refused", /* not sure */ | |
2587 | #endif | |
2588 | ||
2589 | WSAHOST_NOT_FOUND , "Host not found", | |
2590 | WSATRY_AGAIN , "Authoritative host not found during name lookup", | |
2591 | WSANO_RECOVERY , "Non-recoverable error during name lookup", | |
2592 | WSANO_DATA , "Valid name, no data record of requested type", | |
2593 | ||
2594 | -1, NULL | |
2595 | }; | |
2596 | ||
2597 | char * | |
2598 | sys_strerror(int error_no) | |
2599 | { | |
2600 | int i; | |
2601 | static char unknown_msg[40]; | |
2602 | ||
a302c7ae AI |
2603 | if (error_no >= 0 && error_no < sys_nerr) |
2604 | return sys_errlist[error_no]; | |
d8fcc1b9 AI |
2605 | |
2606 | for (i = 0; _wsa_errlist[i].errnum >= 0; i++) | |
2607 | if (_wsa_errlist[i].errnum == error_no) | |
2608 | return _wsa_errlist[i].msg; | |
2609 | ||
2610 | sprintf(unknown_msg, "Unidentified error: %d", error_no); | |
2611 | return unknown_msg; | |
2612 | } | |
2613 | ||
480b0c5b GV |
2614 | /* [andrewi 3-May-96] I've had conflicting results using both methods, |
2615 | but I believe the method of keeping the socket handle separate (and | |
2616 | insuring it is not inheritable) is the correct one. */ | |
2617 | ||
2618 | //#define SOCK_REPLACE_HANDLE | |
2619 | ||
2620 | #ifdef SOCK_REPLACE_HANDLE | |
2621 | #define SOCK_HANDLE(fd) ((SOCKET) _get_osfhandle (fd)) | |
2622 | #else | |
2623 | #define SOCK_HANDLE(fd) ((SOCKET) fd_info[fd].hnd) | |
2624 | #endif | |
2625 | ||
2626 | int | |
2627 | sys_socket(int af, int type, int protocol) | |
2628 | { | |
2629 | int fd; | |
2630 | long s; | |
2631 | child_process * cp; | |
2632 | ||
f249a012 | 2633 | if (winsock_lib == NULL) |
480b0c5b GV |
2634 | { |
2635 | h_errno = ENETDOWN; | |
2636 | return INVALID_SOCKET; | |
2637 | } | |
2638 | ||
2639 | check_errno (); | |
2640 | ||
2641 | /* call the real socket function */ | |
2642 | s = (long) pfn_socket (af, type, protocol); | |
2643 | ||
2644 | if (s != INVALID_SOCKET) | |
2645 | { | |
2646 | /* Although under NT 3.5 _open_osfhandle will accept a socket | |
2647 | handle, if opened with SO_OPENTYPE == SO_SYNCHRONOUS_NONALERT, | |
2648 | that does not work under NT 3.1. However, we can get the same | |
2649 | effect by using a backdoor function to replace an existing | |
2650 | descriptor handle with the one we want. */ | |
2651 | ||
2652 | /* allocate a file descriptor (with appropriate flags) */ | |
2653 | fd = _open ("NUL:", _O_RDWR); | |
2654 | if (fd >= 0) | |
2655 | { | |
2656 | #ifdef SOCK_REPLACE_HANDLE | |
2657 | /* now replace handle to NUL with our socket handle */ | |
2658 | CloseHandle ((HANDLE) _get_osfhandle (fd)); | |
2659 | _free_osfhnd (fd); | |
2660 | _set_osfhnd (fd, s); | |
2661 | /* setmode (fd, _O_BINARY); */ | |
2662 | #else | |
ca149beb AI |
2663 | /* Make a non-inheritable copy of the socket handle. Note |
2664 | that it is possible that sockets aren't actually kernel | |
2665 | handles, which appears to be the case on Windows 9x when | |
2666 | the MS Proxy winsock client is installed. */ | |
480b0c5b | 2667 | { |
f1614061 RS |
2668 | /* Apparently there is a bug in NT 3.51 with some service |
2669 | packs, which prevents using DuplicateHandle to make a | |
2670 | socket handle non-inheritable (causes WSACleanup to | |
2671 | hang). The work-around is to use SetHandleInformation | |
2672 | instead if it is available and implemented. */ | |
ca149beb AI |
2673 | if (pfn_SetHandleInformation) |
2674 | { | |
2675 | pfn_SetHandleInformation ((HANDLE) s, HANDLE_FLAG_INHERIT, 0); | |
2676 | } | |
2677 | else | |
f1614061 | 2678 | { |
ca149beb AI |
2679 | HANDLE parent = GetCurrentProcess (); |
2680 | HANDLE new_s = INVALID_HANDLE_VALUE; | |
2681 | ||
2682 | if (DuplicateHandle (parent, | |
2683 | (HANDLE) s, | |
2684 | parent, | |
2685 | &new_s, | |
2686 | 0, | |
2687 | FALSE, | |
2688 | DUPLICATE_SAME_ACCESS)) | |
2689 | { | |
2690 | /* It is possible that DuplicateHandle succeeds even | |
2691 | though the socket wasn't really a kernel handle, | |
2692 | because a real handle has the same value. So | |
2693 | test whether the new handle really is a socket. */ | |
2694 | long nonblocking = 0; | |
2695 | if (pfn_ioctlsocket ((SOCKET) new_s, FIONBIO, &nonblocking) == 0) | |
2696 | { | |
2697 | pfn_closesocket (s); | |
2698 | s = (SOCKET) new_s; | |
2699 | } | |
2700 | else | |
2701 | { | |
2702 | CloseHandle (new_s); | |
2703 | } | |
2704 | } | |
f1614061 | 2705 | } |
480b0c5b | 2706 | } |
ca149beb | 2707 | fd_info[fd].hnd = (HANDLE) s; |
480b0c5b GV |
2708 | #endif |
2709 | ||
2710 | /* set our own internal flags */ | |
2711 | fd_info[fd].flags = FILE_SOCKET | FILE_BINARY | FILE_READ | FILE_WRITE; | |
2712 | ||
2713 | cp = new_child (); | |
2714 | if (cp) | |
2715 | { | |
2716 | cp->fd = fd; | |
2717 | cp->status = STATUS_READ_ACKNOWLEDGED; | |
2718 | ||
2719 | /* attach child_process to fd_info */ | |
2720 | if (fd_info[ fd ].cp != NULL) | |
2721 | { | |
2722 | DebPrint (("sys_socket: fd_info[%d] apparently in use!\n", fd)); | |
2723 | abort (); | |
2724 | } | |
2725 | ||
2726 | fd_info[ fd ].cp = cp; | |
2727 | ||
2728 | /* success! */ | |
f249a012 | 2729 | winsock_inuse++; /* count open sockets */ |
480b0c5b GV |
2730 | return fd; |
2731 | } | |
2732 | ||
2733 | /* clean up */ | |
2734 | _close (fd); | |
2735 | } | |
2736 | pfn_closesocket (s); | |
2737 | h_errno = EMFILE; | |
2738 | } | |
2739 | set_errno (); | |
2740 | ||
2741 | return -1; | |
2742 | } | |
2743 | ||
2744 | ||
2745 | int | |
2746 | sys_bind (int s, const struct sockaddr * addr, int namelen) | |
2747 | { | |
f249a012 | 2748 | if (winsock_lib == NULL) |
480b0c5b GV |
2749 | { |
2750 | h_errno = ENOTSOCK; | |
2751 | return SOCKET_ERROR; | |
2752 | } | |
2753 | ||
2754 | check_errno (); | |
2755 | if (fd_info[s].flags & FILE_SOCKET) | |
2756 | { | |
2757 | int rc = pfn_bind (SOCK_HANDLE (s), addr, namelen); | |
2758 | if (rc == SOCKET_ERROR) | |
2759 | set_errno (); | |
2760 | return rc; | |
2761 | } | |
2762 | h_errno = ENOTSOCK; | |
2763 | return SOCKET_ERROR; | |
2764 | } | |
2765 | ||
2766 | ||
2767 | int | |
2768 | sys_connect (int s, const struct sockaddr * name, int namelen) | |
2769 | { | |
f249a012 | 2770 | if (winsock_lib == NULL) |
480b0c5b GV |
2771 | { |
2772 | h_errno = ENOTSOCK; | |
2773 | return SOCKET_ERROR; | |
2774 | } | |
2775 | ||
2776 | check_errno (); | |
2777 | if (fd_info[s].flags & FILE_SOCKET) | |
2778 | { | |
2779 | int rc = pfn_connect (SOCK_HANDLE (s), name, namelen); | |
2780 | if (rc == SOCKET_ERROR) | |
2781 | set_errno (); | |
2782 | return rc; | |
2783 | } | |
2784 | h_errno = ENOTSOCK; | |
2785 | return SOCKET_ERROR; | |
2786 | } | |
2787 | ||
2788 | u_short | |
2789 | sys_htons (u_short hostshort) | |
2790 | { | |
f249a012 | 2791 | return (winsock_lib != NULL) ? |
480b0c5b GV |
2792 | pfn_htons (hostshort) : hostshort; |
2793 | } | |
2794 | ||
2795 | u_short | |
2796 | sys_ntohs (u_short netshort) | |
2797 | { | |
f249a012 | 2798 | return (winsock_lib != NULL) ? |
480b0c5b GV |
2799 | pfn_ntohs (netshort) : netshort; |
2800 | } | |
2801 | ||
2802 | unsigned long | |
2803 | sys_inet_addr (const char * cp) | |
2804 | { | |
f249a012 | 2805 | return (winsock_lib != NULL) ? |
480b0c5b GV |
2806 | pfn_inet_addr (cp) : INADDR_NONE; |
2807 | } | |
2808 | ||
2809 | int | |
2810 | sys_gethostname (char * name, int namelen) | |
2811 | { | |
f249a012 | 2812 | if (winsock_lib != NULL) |
480b0c5b GV |
2813 | return pfn_gethostname (name, namelen); |
2814 | ||
2815 | if (namelen > MAX_COMPUTERNAME_LENGTH) | |
a302c7ae | 2816 | return !GetComputerName (name, (DWORD *)&namelen); |
480b0c5b GV |
2817 | |
2818 | h_errno = EFAULT; | |
2819 | return SOCKET_ERROR; | |
2820 | } | |
2821 | ||
2822 | struct hostent * | |
2823 | sys_gethostbyname(const char * name) | |
2824 | { | |
2825 | struct hostent * host; | |
2826 | ||
f249a012 | 2827 | if (winsock_lib == NULL) |
480b0c5b GV |
2828 | { |
2829 | h_errno = ENETDOWN; | |
2830 | return NULL; | |
2831 | } | |
2832 | ||
2833 | check_errno (); | |
2834 | host = pfn_gethostbyname (name); | |
2835 | if (!host) | |
2836 | set_errno (); | |
2837 | return host; | |
2838 | } | |
2839 | ||
2840 | struct servent * | |
2841 | sys_getservbyname(const char * name, const char * proto) | |
2842 | { | |
2843 | struct servent * serv; | |
2844 | ||
f249a012 | 2845 | if (winsock_lib == NULL) |
480b0c5b GV |
2846 | { |
2847 | h_errno = ENETDOWN; | |
2848 | return NULL; | |
2849 | } | |
2850 | ||
2851 | check_errno (); | |
2852 | serv = pfn_getservbyname (name, proto); | |
2853 | if (!serv) | |
2854 | set_errno (); | |
2855 | return serv; | |
2856 | } | |
2857 | ||
380961a6 GV |
2858 | int |
2859 | sys_shutdown (int s, int how) | |
2860 | { | |
2861 | int rc; | |
2862 | ||
2863 | if (winsock_lib == NULL) | |
2864 | { | |
2865 | h_errno = ENETDOWN; | |
2866 | return SOCKET_ERROR; | |
2867 | } | |
2868 | ||
2869 | check_errno (); | |
2870 | if (fd_info[s].flags & FILE_SOCKET) | |
2871 | { | |
2872 | int rc = pfn_shutdown (SOCK_HANDLE (s), how); | |
2873 | if (rc == SOCKET_ERROR) | |
2874 | set_errno (); | |
2875 | return rc; | |
2876 | } | |
2877 | h_errno = ENOTSOCK; | |
2878 | return SOCKET_ERROR; | |
2879 | } | |
2880 | ||
480b0c5b GV |
2881 | #endif /* HAVE_SOCKETS */ |
2882 | ||
2883 | ||
2884 | /* Shadow main io functions: we need to handle pipes and sockets more | |
2885 | intelligently, and implement non-blocking mode as well. */ | |
2886 | ||
2887 | int | |
2888 | sys_close (int fd) | |
2889 | { | |
2890 | int rc; | |
2891 | ||
2892 | if (fd < 0 || fd >= MAXDESC) | |
2893 | { | |
2894 | errno = EBADF; | |
2895 | return -1; | |
2896 | } | |
2897 | ||
2898 | if (fd_info[fd].cp) | |
2899 | { | |
2900 | child_process * cp = fd_info[fd].cp; | |
2901 | ||
2902 | fd_info[fd].cp = NULL; | |
2903 | ||
2904 | if (CHILD_ACTIVE (cp)) | |
2905 | { | |
2906 | /* if last descriptor to active child_process then cleanup */ | |
2907 | int i; | |
2908 | for (i = 0; i < MAXDESC; i++) | |
2909 | { | |
2910 | if (i == fd) | |
2911 | continue; | |
2912 | if (fd_info[i].cp == cp) | |
2913 | break; | |
2914 | } | |
2915 | if (i == MAXDESC) | |
2916 | { | |
f249a012 | 2917 | #ifdef HAVE_SOCKETS |
480b0c5b GV |
2918 | if (fd_info[fd].flags & FILE_SOCKET) |
2919 | { | |
f249a012 RS |
2920 | #ifndef SOCK_REPLACE_HANDLE |
2921 | if (winsock_lib == NULL) abort (); | |
480b0c5b GV |
2922 | |
2923 | pfn_shutdown (SOCK_HANDLE (fd), 2); | |
2924 | rc = pfn_closesocket (SOCK_HANDLE (fd)); | |
f249a012 RS |
2925 | #endif |
2926 | winsock_inuse--; /* count open sockets */ | |
480b0c5b GV |
2927 | } |
2928 | #endif | |
2929 | delete_child (cp); | |
2930 | } | |
2931 | } | |
2932 | } | |
2933 | ||
2934 | /* Note that sockets do not need special treatment here (at least on | |
e9e23e23 | 2935 | NT and Windows 95 using the standard tcp/ip stacks) - it appears that |
480b0c5b GV |
2936 | closesocket is equivalent to CloseHandle, which is to be expected |
2937 | because socket handles are fully fledged kernel handles. */ | |
2938 | rc = _close (fd); | |
2939 | ||
2940 | if (rc == 0) | |
2941 | fd_info[fd].flags = 0; | |
2942 | ||
2943 | return rc; | |
2944 | } | |
2945 | ||
2946 | int | |
2947 | sys_dup (int fd) | |
2948 | { | |
2949 | int new_fd; | |
2950 | ||
2951 | new_fd = _dup (fd); | |
2952 | if (new_fd >= 0) | |
2953 | { | |
2954 | /* duplicate our internal info as well */ | |
2955 | fd_info[new_fd] = fd_info[fd]; | |
2956 | } | |
2957 | return new_fd; | |
2958 | } | |
2959 | ||
2960 | ||
2961 | int | |
2962 | sys_dup2 (int src, int dst) | |
2963 | { | |
2964 | int rc; | |
2965 | ||
2966 | if (dst < 0 || dst >= MAXDESC) | |
2967 | { | |
2968 | errno = EBADF; | |
2969 | return -1; | |
2970 | } | |
2971 | ||
2972 | /* make sure we close the destination first if it's a pipe or socket */ | |
2973 | if (src != dst && fd_info[dst].flags != 0) | |
2974 | sys_close (dst); | |
2975 | ||
2976 | rc = _dup2 (src, dst); | |
2977 | if (rc == 0) | |
2978 | { | |
2979 | /* duplicate our internal info as well */ | |
2980 | fd_info[dst] = fd_info[src]; | |
2981 | } | |
2982 | return rc; | |
2983 | } | |
2984 | ||
480b0c5b GV |
2985 | /* Unix pipe() has only one arg */ |
2986 | int | |
2987 | sys_pipe (int * phandles) | |
2988 | { | |
2989 | int rc; | |
2990 | unsigned flags; | |
2991 | child_process * cp; | |
2992 | ||
76b3903d GV |
2993 | /* make pipe handles non-inheritable; when we spawn a child, we |
2994 | replace the relevant handle with an inheritable one. Also put | |
2995 | pipes into binary mode; we will do text mode translation ourselves | |
2996 | if required. */ | |
2997 | rc = _pipe (phandles, 0, _O_NOINHERIT | _O_BINARY); | |
480b0c5b GV |
2998 | |
2999 | if (rc == 0) | |
3000 | { | |
7664e306 | 3001 | flags = FILE_PIPE | FILE_READ | FILE_BINARY; |
480b0c5b GV |
3002 | fd_info[phandles[0]].flags = flags; |
3003 | ||
7664e306 | 3004 | flags = FILE_PIPE | FILE_WRITE | FILE_BINARY; |
480b0c5b GV |
3005 | fd_info[phandles[1]].flags = flags; |
3006 | } | |
3007 | ||
3008 | return rc; | |
3009 | } | |
3010 | ||
f7554349 | 3011 | /* From ntproc.c */ |
fbd6baed | 3012 | extern Lisp_Object Vw32_pipe_read_delay; |
f7554349 | 3013 | |
480b0c5b GV |
3014 | /* Function to do blocking read of one byte, needed to implement |
3015 | select. It is only allowed on sockets and pipes. */ | |
3016 | int | |
3017 | _sys_read_ahead (int fd) | |
3018 | { | |
3019 | child_process * cp; | |
3020 | int rc; | |
3021 | ||
3022 | if (fd < 0 || fd >= MAXDESC) | |
3023 | return STATUS_READ_ERROR; | |
3024 | ||
3025 | cp = fd_info[fd].cp; | |
3026 | ||
3027 | if (cp == NULL || cp->fd != fd || cp->status != STATUS_READ_READY) | |
3028 | return STATUS_READ_ERROR; | |
3029 | ||
3030 | if ((fd_info[fd].flags & (FILE_PIPE | FILE_SOCKET)) == 0 | |
3031 | || (fd_info[fd].flags & FILE_READ) == 0) | |
3032 | { | |
3033 | DebPrint (("_sys_read_ahead: internal error: fd %d is not a pipe or socket!\n", fd)); | |
3034 | abort (); | |
3035 | } | |
3036 | ||
3037 | cp->status = STATUS_READ_IN_PROGRESS; | |
3038 | ||
3039 | if (fd_info[fd].flags & FILE_PIPE) | |
f7554349 | 3040 | { |
f7554349 KH |
3041 | rc = _read (fd, &cp->chr, sizeof (char)); |
3042 | ||
3043 | /* Give subprocess time to buffer some more output for us before | |
e9e23e23 | 3044 | reporting that input is available; we need this because Windows 95 |
f7554349 KH |
3045 | connects DOS programs to pipes by making the pipe appear to be |
3046 | the normal console stdout - as a result most DOS programs will | |
3047 | write to stdout without buffering, ie. one character at a | |
fbd6baed | 3048 | time. Even some W32 programs do this - "dir" in a command |
f7554349 KH |
3049 | shell on NT is very slow if we don't do this. */ |
3050 | if (rc > 0) | |
3051 | { | |
fbd6baed | 3052 | int wait = XINT (Vw32_pipe_read_delay); |
f7554349 KH |
3053 | |
3054 | if (wait > 0) | |
3055 | Sleep (wait); | |
3056 | else if (wait < 0) | |
3057 | while (++wait <= 0) | |
3058 | /* Yield remainder of our time slice, effectively giving a | |
3059 | temporary priority boost to the child process. */ | |
3060 | Sleep (0); | |
3061 | } | |
3062 | } | |
480b0c5b GV |
3063 | #ifdef HAVE_SOCKETS |
3064 | else if (fd_info[fd].flags & FILE_SOCKET) | |
3065 | rc = pfn_recv (SOCK_HANDLE (fd), &cp->chr, sizeof (char), 0); | |
3066 | #endif | |
3067 | ||
3068 | if (rc == sizeof (char)) | |
3069 | cp->status = STATUS_READ_SUCCEEDED; | |
3070 | else | |
3071 | cp->status = STATUS_READ_FAILED; | |
3072 | ||
3073 | return cp->status; | |
3074 | } | |
3075 | ||
3076 | int | |
3077 | sys_read (int fd, char * buffer, unsigned int count) | |
3078 | { | |
3079 | int nchars; | |
480b0c5b GV |
3080 | int to_read; |
3081 | DWORD waiting; | |
76b3903d | 3082 | char * orig_buffer = buffer; |
480b0c5b GV |
3083 | |
3084 | if (fd < 0 || fd >= MAXDESC) | |
3085 | { | |
3086 | errno = EBADF; | |
3087 | return -1; | |
3088 | } | |
3089 | ||
3090 | if (fd_info[fd].flags & (FILE_PIPE | FILE_SOCKET)) | |
3091 | { | |
3092 | child_process *cp = fd_info[fd].cp; | |
3093 | ||
3094 | if ((fd_info[fd].flags & FILE_READ) == 0) | |
3095 | { | |
3096 | errno = EBADF; | |
3097 | return -1; | |
3098 | } | |
3099 | ||
76b3903d GV |
3100 | nchars = 0; |
3101 | ||
3102 | /* re-read CR carried over from last read */ | |
3103 | if (fd_info[fd].flags & FILE_LAST_CR) | |
3104 | { | |
3105 | if (fd_info[fd].flags & FILE_BINARY) abort (); | |
3106 | *buffer++ = 0x0d; | |
3107 | count--; | |
3108 | nchars++; | |
f52eb3ef | 3109 | fd_info[fd].flags &= ~FILE_LAST_CR; |
76b3903d GV |
3110 | } |
3111 | ||
480b0c5b GV |
3112 | /* presence of a child_process structure means we are operating in |
3113 | non-blocking mode - otherwise we just call _read directly. | |
3114 | Note that the child_process structure might be missing because | |
3115 | reap_subprocess has been called; in this case the pipe is | |
3116 | already broken, so calling _read on it is okay. */ | |
3117 | if (cp) | |
3118 | { | |
3119 | int current_status = cp->status; | |
3120 | ||
3121 | switch (current_status) | |
3122 | { | |
3123 | case STATUS_READ_FAILED: | |
3124 | case STATUS_READ_ERROR: | |
f52eb3ef GV |
3125 | /* report normal EOF if nothing in buffer */ |
3126 | if (nchars <= 0) | |
3127 | fd_info[fd].flags |= FILE_AT_EOF; | |
3128 | return nchars; | |
480b0c5b GV |
3129 | |
3130 | case STATUS_READ_READY: | |
3131 | case STATUS_READ_IN_PROGRESS: | |
3132 | DebPrint (("sys_read called when read is in progress\n")); | |
3133 | errno = EWOULDBLOCK; | |
3134 | return -1; | |
3135 | ||
3136 | case STATUS_READ_SUCCEEDED: | |
3137 | /* consume read-ahead char */ | |
3138 | *buffer++ = cp->chr; | |
3139 | count--; | |
76b3903d | 3140 | nchars++; |
480b0c5b GV |
3141 | cp->status = STATUS_READ_ACKNOWLEDGED; |
3142 | ResetEvent (cp->char_avail); | |
3143 | ||
3144 | case STATUS_READ_ACKNOWLEDGED: | |
3145 | break; | |
3146 | ||
3147 | default: | |
3148 | DebPrint (("sys_read: bad status %d\n", current_status)); | |
3149 | errno = EBADF; | |
3150 | return -1; | |
3151 | } | |
3152 | ||
3153 | if (fd_info[fd].flags & FILE_PIPE) | |
3154 | { | |
3155 | PeekNamedPipe ((HANDLE) _get_osfhandle (fd), NULL, 0, NULL, &waiting, NULL); | |
3156 | to_read = min (waiting, (DWORD) count); | |
f52eb3ef GV |
3157 | |
3158 | if (to_read > 0) | |
3159 | nchars += _read (fd, buffer, to_read); | |
480b0c5b GV |
3160 | } |
3161 | #ifdef HAVE_SOCKETS | |
3162 | else /* FILE_SOCKET */ | |
3163 | { | |
f249a012 | 3164 | if (winsock_lib == NULL) abort (); |
480b0c5b GV |
3165 | |
3166 | /* do the equivalent of a non-blocking read */ | |
3167 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONREAD, &waiting); | |
76b3903d | 3168 | if (waiting == 0 && nchars == 0) |
480b0c5b GV |
3169 | { |
3170 | h_errno = errno = EWOULDBLOCK; | |
3171 | return -1; | |
3172 | } | |
3173 | ||
480b0c5b GV |
3174 | if (waiting) |
3175 | { | |
3176 | /* always use binary mode for sockets */ | |
76b3903d GV |
3177 | int res = pfn_recv (SOCK_HANDLE (fd), buffer, count, 0); |
3178 | if (res == SOCKET_ERROR) | |
480b0c5b GV |
3179 | { |
3180 | DebPrint(("sys_read.recv failed with error %d on socket %ld\n", | |
3181 | pfn_WSAGetLastError (), SOCK_HANDLE (fd))); | |
76b3903d GV |
3182 | set_errno (); |
3183 | return -1; | |
480b0c5b | 3184 | } |
76b3903d | 3185 | nchars += res; |
480b0c5b GV |
3186 | } |
3187 | } | |
3188 | #endif | |
3189 | } | |
3190 | else | |
f52eb3ef GV |
3191 | { |
3192 | int nread = _read (fd, buffer, count); | |
3193 | if (nread >= 0) | |
3194 | nchars += nread; | |
3195 | else if (nchars == 0) | |
3196 | nchars = nread; | |
3197 | } | |
76b3903d | 3198 | |
f52eb3ef GV |
3199 | if (nchars <= 0) |
3200 | fd_info[fd].flags |= FILE_AT_EOF; | |
76b3903d | 3201 | /* Perform text mode translation if required. */ |
f52eb3ef | 3202 | else if ((fd_info[fd].flags & FILE_BINARY) == 0) |
76b3903d GV |
3203 | { |
3204 | nchars = crlf_to_lf (nchars, orig_buffer); | |
3205 | /* If buffer contains only CR, return that. To be absolutely | |
3206 | sure we should attempt to read the next char, but in | |
3207 | practice a CR to be followed by LF would not appear by | |
3208 | itself in the buffer. */ | |
3209 | if (nchars > 1 && orig_buffer[nchars - 1] == 0x0d) | |
3210 | { | |
3211 | fd_info[fd].flags |= FILE_LAST_CR; | |
3212 | nchars--; | |
3213 | } | |
76b3903d | 3214 | } |
480b0c5b GV |
3215 | } |
3216 | else | |
3217 | nchars = _read (fd, buffer, count); | |
3218 | ||
76b3903d | 3219 | return nchars; |
480b0c5b GV |
3220 | } |
3221 | ||
3222 | /* For now, don't bother with a non-blocking mode */ | |
3223 | int | |
3224 | sys_write (int fd, const void * buffer, unsigned int count) | |
3225 | { | |
3226 | int nchars; | |
3227 | ||
3228 | if (fd < 0 || fd >= MAXDESC) | |
3229 | { | |
3230 | errno = EBADF; | |
3231 | return -1; | |
3232 | } | |
3233 | ||
3234 | if (fd_info[fd].flags & (FILE_PIPE | FILE_SOCKET)) | |
76b3903d GV |
3235 | { |
3236 | if ((fd_info[fd].flags & FILE_WRITE) == 0) | |
3237 | { | |
3238 | errno = EBADF; | |
3239 | return -1; | |
3240 | } | |
3241 | ||
3242 | /* Perform text mode translation if required. */ | |
3243 | if ((fd_info[fd].flags & FILE_BINARY) == 0) | |
3244 | { | |
3245 | char * tmpbuf = alloca (count * 2); | |
3246 | unsigned char * src = (void *)buffer; | |
3247 | unsigned char * dst = tmpbuf; | |
3248 | int nbytes = count; | |
3249 | ||
3250 | while (1) | |
3251 | { | |
3252 | unsigned char *next; | |
3253 | /* copy next line or remaining bytes */ | |
3254 | next = _memccpy (dst, src, '\n', nbytes); | |
3255 | if (next) | |
3256 | { | |
3257 | /* copied one line ending with '\n' */ | |
3258 | int copied = next - dst; | |
3259 | nbytes -= copied; | |
3260 | src += copied; | |
3261 | /* insert '\r' before '\n' */ | |
3262 | next[-1] = '\r'; | |
3263 | next[0] = '\n'; | |
3264 | dst = next + 1; | |
3265 | count++; | |
3266 | } | |
3267 | else | |
3268 | /* copied remaining partial line -> now finished */ | |
3269 | break; | |
3270 | } | |
3271 | buffer = tmpbuf; | |
3272 | } | |
3273 | } | |
3274 | ||
480b0c5b GV |
3275 | #ifdef HAVE_SOCKETS |
3276 | if (fd_info[fd].flags & FILE_SOCKET) | |
3277 | { | |
f249a012 | 3278 | if (winsock_lib == NULL) abort (); |
480b0c5b GV |
3279 | nchars = pfn_send (SOCK_HANDLE (fd), buffer, count, 0); |
3280 | if (nchars == SOCKET_ERROR) | |
3281 | { | |
3282 | DebPrint(("sys_read.send failed with error %d on socket %ld\n", | |
3283 | pfn_WSAGetLastError (), SOCK_HANDLE (fd))); | |
3284 | set_errno (); | |
3285 | } | |
3286 | } | |
3287 | else | |
3288 | #endif | |
3289 | nchars = _write (fd, buffer, count); | |
3290 | ||
3291 | return nchars; | |
3292 | } | |
3293 | ||
f52eb3ef GV |
3294 | static void |
3295 | check_windows_init_file () | |
3296 | { | |
3297 | extern int noninteractive, inhibit_window_system; | |
3298 | ||
3299 | /* A common indication that Emacs is not installed properly is when | |
3300 | it cannot find the Windows installation file. If this file does | |
3301 | not exist in the expected place, tell the user. */ | |
3302 | ||
d54abccd GV |
3303 | if (!noninteractive && !inhibit_window_system) |
3304 | { | |
3305 | extern Lisp_Object Vwindow_system, Vload_path, Qfile_exists_p; | |
a0b9c838 | 3306 | Lisp_Object objs[2]; |
96ef7d42 | 3307 | Lisp_Object full_load_path; |
d54abccd GV |
3308 | Lisp_Object init_file; |
3309 | int fd; | |
f52eb3ef | 3310 | |
a0b9c838 GV |
3311 | objs[0] = Vload_path; |
3312 | objs[1] = decode_env_path (0, (getenv ("EMACSLOADPATH"))); | |
3313 | full_load_path = Fappend (2, objs); | |
d54abccd | 3314 | init_file = build_string ("term/w32-win"); |
96ef7d42 | 3315 | fd = openp (full_load_path, init_file, ".el:.elc", NULL, 0); |
d54abccd GV |
3316 | if (fd < 0) |
3317 | { | |
96ef7d42 | 3318 | Lisp_Object load_path_print = Fprin1_to_string (full_load_path, Qnil); |
d54abccd GV |
3319 | char *init_file_name = XSTRING (init_file)->data; |
3320 | char *load_path = XSTRING (load_path_print)->data; | |
3321 | char *buffer = alloca (1024); | |
3322 | ||
3323 | sprintf (buffer, | |
3324 | "The Emacs Windows initialization file \"%s.el\" " | |
3325 | "could not be found in your Emacs installation. " | |
3326 | "Emacs checked the following directories for this file:\n" | |
3327 | "\n%s\n\n" | |
3328 | "When Emacs cannot find this file, it usually means that it " | |
3329 | "was not installed properly, or its distribution file was " | |
3330 | "not unpacked properly.\nSee the README.W32 file in the " | |
3331 | "top-level Emacs directory for more information.", | |
3332 | init_file_name, load_path); | |
3333 | MessageBox (NULL, | |
3334 | buffer, | |
3335 | "Emacs Abort Dialog", | |
3336 | MB_OK | MB_ICONEXCLAMATION | MB_TASKMODAL); | |
f52eb3ef GV |
3337 | /* Use the low-level Emacs abort. */ |
3338 | #undef abort | |
d54abccd GV |
3339 | abort (); |
3340 | } | |
3341 | else | |
3342 | { | |
a302c7ae | 3343 | _close (fd); |
d54abccd | 3344 | } |
f52eb3ef | 3345 | } |
f52eb3ef | 3346 | } |
480b0c5b GV |
3347 | |
3348 | void | |
3349 | term_ntproc () | |
3350 | { | |
3351 | #ifdef HAVE_SOCKETS | |
3352 | /* shutdown the socket interface if necessary */ | |
3353 | term_winsock (); | |
3354 | #endif | |
3355 | } | |
3356 | ||
3357 | void | |
3358 | init_ntproc () | |
3359 | { | |
3360 | #ifdef HAVE_SOCKETS | |
f249a012 RS |
3361 | /* Initialise the socket interface now if available and requested by |
3362 | the user by defining PRELOAD_WINSOCK; otherwise loading will be | |
fbd6baed | 3363 | delayed until open-network-stream is called (w32-has-winsock can |
f249a012 RS |
3364 | also be used to dynamically load or reload winsock). |
3365 | ||
3366 | Conveniently, init_environment is called before us, so | |
3367 | PRELOAD_WINSOCK can be set in the registry. */ | |
3368 | ||
3369 | /* Always initialize this correctly. */ | |
3370 | winsock_lib = NULL; | |
3371 | ||
3372 | if (getenv ("PRELOAD_WINSOCK") != NULL) | |
3373 | init_winsock (TRUE); | |
480b0c5b GV |
3374 | #endif |
3375 | ||
3376 | /* Initial preparation for subprocess support: replace our standard | |
3377 | handles with non-inheritable versions. */ | |
3378 | { | |
3379 | HANDLE parent; | |
3380 | HANDLE stdin_save = INVALID_HANDLE_VALUE; | |
3381 | HANDLE stdout_save = INVALID_HANDLE_VALUE; | |
3382 | HANDLE stderr_save = INVALID_HANDLE_VALUE; | |
3383 | ||
3384 | parent = GetCurrentProcess (); | |
3385 | ||
3386 | /* ignore errors when duplicating and closing; typically the | |
3387 | handles will be invalid when running as a gui program. */ | |
3388 | DuplicateHandle (parent, | |
3389 | GetStdHandle (STD_INPUT_HANDLE), | |
3390 | parent, | |
3391 | &stdin_save, | |
3392 | 0, | |
3393 | FALSE, | |
3394 | DUPLICATE_SAME_ACCESS); | |
3395 | ||
3396 | DuplicateHandle (parent, | |
3397 | GetStdHandle (STD_OUTPUT_HANDLE), | |
3398 | parent, | |
3399 | &stdout_save, | |
3400 | 0, | |
3401 | FALSE, | |
3402 | DUPLICATE_SAME_ACCESS); | |
3403 | ||
3404 | DuplicateHandle (parent, | |
3405 | GetStdHandle (STD_ERROR_HANDLE), | |
3406 | parent, | |
3407 | &stderr_save, | |
3408 | 0, | |
3409 | FALSE, | |
3410 | DUPLICATE_SAME_ACCESS); | |
3411 | ||
3412 | fclose (stdin); | |
3413 | fclose (stdout); | |
3414 | fclose (stderr); | |
3415 | ||
3416 | if (stdin_save != INVALID_HANDLE_VALUE) | |
3417 | _open_osfhandle ((long) stdin_save, O_TEXT); | |
3418 | else | |
76b3903d GV |
3419 | _open ("nul", O_TEXT | O_NOINHERIT | O_RDONLY); |
3420 | _fdopen (0, "r"); | |
480b0c5b GV |
3421 | |
3422 | if (stdout_save != INVALID_HANDLE_VALUE) | |
3423 | _open_osfhandle ((long) stdout_save, O_TEXT); | |
3424 | else | |
76b3903d GV |
3425 | _open ("nul", O_TEXT | O_NOINHERIT | O_WRONLY); |
3426 | _fdopen (1, "w"); | |
480b0c5b GV |
3427 | |
3428 | if (stderr_save != INVALID_HANDLE_VALUE) | |
3429 | _open_osfhandle ((long) stderr_save, O_TEXT); | |
3430 | else | |
76b3903d GV |
3431 | _open ("nul", O_TEXT | O_NOINHERIT | O_WRONLY); |
3432 | _fdopen (2, "w"); | |
480b0c5b GV |
3433 | } |
3434 | ||
3435 | /* unfortunately, atexit depends on implementation of malloc */ | |
3436 | /* atexit (term_ntproc); */ | |
3437 | signal (SIGABRT, term_ntproc); | |
76b3903d GV |
3438 | |
3439 | /* determine which drives are fixed, for GetCachedVolumeInformation */ | |
3440 | { | |
3441 | /* GetDriveType must have trailing backslash. */ | |
3442 | char drive[] = "A:\\"; | |
3443 | ||
3444 | /* Loop over all possible drive letters */ | |
3445 | while (*drive <= 'Z') | |
3446 | { | |
3447 | /* Record if this drive letter refers to a fixed drive. */ | |
3448 | fixed_drives[DRIVE_INDEX (*drive)] = | |
3449 | (GetDriveType (drive) == DRIVE_FIXED); | |
3450 | ||
3451 | (*drive)++; | |
3452 | } | |
a302c7ae AI |
3453 | |
3454 | /* Reset the volume info cache. */ | |
3455 | volume_cache = NULL; | |
76b3903d | 3456 | } |
d54abccd GV |
3457 | |
3458 | /* Check to see if Emacs has been installed correctly. */ | |
3459 | check_windows_init_file (); | |
480b0c5b GV |
3460 | } |
3461 | ||
3462 | /* end of nt.c */ |