Commit | Line | Data |
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e9e23e23 | 1 | /* Utility and Unix shadow routines for GNU Emacs on the Microsoft W32 API. |
302f0b29 | 2 | Copyright (C) 1994, 1995, 2000, 2001 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 */ | |
4838e624 PJ |
38 | |
39 | #ifdef HAVE_CONFIG_H | |
40 | #include <config.h> | |
41 | #endif | |
42 | ||
480b0c5b GV |
43 | #undef access |
44 | #undef chdir | |
45 | #undef chmod | |
46 | #undef creat | |
47 | #undef ctime | |
48 | #undef fopen | |
49 | #undef link | |
50 | #undef mkdir | |
51 | #undef mktemp | |
52 | #undef open | |
53 | #undef rename | |
54 | #undef rmdir | |
55 | #undef unlink | |
56 | ||
57 | #undef close | |
58 | #undef dup | |
59 | #undef dup2 | |
60 | #undef pipe | |
61 | #undef read | |
62 | #undef write | |
95ed0025 | 63 | |
d8fcc1b9 AI |
64 | #undef strerror |
65 | ||
95ed0025 | 66 | #include "lisp.h" |
95ed0025 RS |
67 | |
68 | #include <pwd.h> | |
69 | ||
971bce75 AI |
70 | #ifdef __GNUC__ |
71 | #define _ANONYMOUS_UNION | |
72 | #define _ANONYMOUS_STRUCT | |
73 | #endif | |
480b0c5b | 74 | #include <windows.h> |
00b3b7b3 | 75 | |
480b0c5b GV |
76 | #ifdef HAVE_SOCKETS /* TCP connection support, if kernel can do it */ |
77 | #include <sys/socket.h> | |
78 | #undef socket | |
79 | #undef bind | |
80 | #undef connect | |
81 | #undef htons | |
82 | #undef ntohs | |
83 | #undef inet_addr | |
84 | #undef gethostname | |
85 | #undef gethostbyname | |
86 | #undef getservbyname | |
380961a6 | 87 | #undef shutdown |
480b0c5b | 88 | #endif |
00b3b7b3 | 89 | |
489f9371 | 90 | #include "w32.h" |
480b0c5b | 91 | #include "ndir.h" |
489f9371 | 92 | #include "w32heap.h" |
253574a6 JR |
93 | #include "systime.h" |
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 | 99 | |
18e070ac AI |
100 | \f |
101 | /* Equivalent of strerror for W32 error codes. */ | |
102 | char * | |
103 | w32_strerror (int error_no) | |
104 | { | |
105 | static char buf[500]; | |
106 | ||
107 | if (error_no == 0) | |
108 | error_no = GetLastError (); | |
109 | ||
110 | buf[0] = '\0'; | |
111 | if (!FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM, NULL, | |
112 | error_no, | |
113 | 0, /* choose most suitable language */ | |
114 | buf, sizeof (buf), NULL)) | |
115 | sprintf (buf, "w32 error %u", error_no); | |
116 | return buf; | |
117 | } | |
118 | ||
76b3903d | 119 | static char startup_dir[MAXPATHLEN]; |
00b3b7b3 | 120 | |
95ed0025 | 121 | /* Get the current working directory. */ |
480b0c5b | 122 | char * |
95ed0025 RS |
123 | getwd (char *dir) |
124 | { | |
76b3903d | 125 | #if 0 |
480b0c5b GV |
126 | if (GetCurrentDirectory (MAXPATHLEN, dir) > 0) |
127 | return dir; | |
128 | return NULL; | |
76b3903d GV |
129 | #else |
130 | /* Emacs doesn't actually change directory itself, and we want to | |
131 | force our real wd to be where emacs.exe is to avoid unnecessary | |
132 | conflicts when trying to rename or delete directories. */ | |
133 | strcpy (dir, startup_dir); | |
134 | return dir; | |
135 | #endif | |
95ed0025 RS |
136 | } |
137 | ||
480b0c5b | 138 | #ifndef HAVE_SOCKETS |
95ed0025 RS |
139 | /* Emulate gethostname. */ |
140 | int | |
141 | gethostname (char *buffer, int size) | |
142 | { | |
143 | /* NT only allows small host names, so the buffer is | |
144 | certainly large enough. */ | |
145 | return !GetComputerName (buffer, &size); | |
146 | } | |
480b0c5b | 147 | #endif /* HAVE_SOCKETS */ |
95ed0025 RS |
148 | |
149 | /* Emulate getloadavg. */ | |
150 | int | |
151 | getloadavg (double loadavg[], int nelem) | |
152 | { | |
153 | int i; | |
154 | ||
155 | /* A faithful emulation is going to have to be saved for a rainy day. */ | |
156 | for (i = 0; i < nelem; i++) | |
157 | { | |
158 | loadavg[i] = 0.0; | |
159 | } | |
160 | return i; | |
161 | } | |
162 | ||
480b0c5b | 163 | /* Emulate getpwuid, getpwnam and others. */ |
95ed0025 | 164 | |
051fe60d GV |
165 | #define PASSWD_FIELD_SIZE 256 |
166 | ||
167 | static char the_passwd_name[PASSWD_FIELD_SIZE]; | |
168 | static char the_passwd_passwd[PASSWD_FIELD_SIZE]; | |
169 | static char the_passwd_gecos[PASSWD_FIELD_SIZE]; | |
170 | static char the_passwd_dir[PASSWD_FIELD_SIZE]; | |
171 | static char the_passwd_shell[PASSWD_FIELD_SIZE]; | |
95ed0025 RS |
172 | |
173 | static struct passwd the_passwd = | |
174 | { | |
175 | the_passwd_name, | |
176 | the_passwd_passwd, | |
177 | 0, | |
178 | 0, | |
179 | 0, | |
180 | the_passwd_gecos, | |
181 | the_passwd_dir, | |
182 | the_passwd_shell, | |
183 | }; | |
184 | ||
480b0c5b GV |
185 | int |
186 | getuid () | |
187 | { | |
188 | return the_passwd.pw_uid; | |
189 | } | |
190 | ||
191 | int | |
192 | geteuid () | |
193 | { | |
194 | /* I could imagine arguing for checking to see whether the user is | |
195 | in the Administrators group and returning a UID of 0 for that | |
196 | case, but I don't know how wise that would be in the long run. */ | |
197 | return getuid (); | |
198 | } | |
199 | ||
200 | int | |
201 | getgid () | |
202 | { | |
203 | return the_passwd.pw_gid; | |
204 | } | |
205 | ||
206 | int | |
207 | getegid () | |
208 | { | |
209 | return getgid (); | |
210 | } | |
211 | ||
95ed0025 RS |
212 | struct passwd * |
213 | getpwuid (int uid) | |
214 | { | |
480b0c5b GV |
215 | if (uid == the_passwd.pw_uid) |
216 | return &the_passwd; | |
217 | return NULL; | |
95ed0025 RS |
218 | } |
219 | ||
220 | struct passwd * | |
221 | getpwnam (char *name) | |
222 | { | |
223 | struct passwd *pw; | |
224 | ||
225 | pw = getpwuid (getuid ()); | |
226 | if (!pw) | |
227 | return pw; | |
228 | ||
480b0c5b | 229 | if (stricmp (name, pw->pw_name)) |
95ed0025 RS |
230 | return NULL; |
231 | ||
232 | return pw; | |
233 | } | |
234 | ||
480b0c5b GV |
235 | void |
236 | init_user_info () | |
95ed0025 | 237 | { |
480b0c5b GV |
238 | /* Find the user's real name by opening the process token and |
239 | looking up the name associated with the user-sid in that token. | |
240 | ||
241 | Use the relative portion of the identifier authority value from | |
242 | the user-sid as the user id value (same for group id using the | |
243 | primary group sid from the process token). */ | |
244 | ||
245 | char user_sid[256], name[256], domain[256]; | |
246 | DWORD length = sizeof (name), dlength = sizeof (domain), trash; | |
247 | HANDLE token = NULL; | |
248 | SID_NAME_USE user_type; | |
249 | ||
250 | if (OpenProcessToken (GetCurrentProcess (), TOKEN_QUERY, &token) | |
251 | && GetTokenInformation (token, TokenUser, | |
252 | (PVOID) user_sid, sizeof (user_sid), &trash) | |
253 | && LookupAccountSid (NULL, *((PSID *) user_sid), name, &length, | |
254 | domain, &dlength, &user_type)) | |
d1c1c3d2 | 255 | { |
480b0c5b GV |
256 | strcpy (the_passwd.pw_name, name); |
257 | /* Determine a reasonable uid value. */ | |
258 | if (stricmp ("administrator", name) == 0) | |
259 | { | |
260 | the_passwd.pw_uid = 0; | |
261 | the_passwd.pw_gid = 0; | |
262 | } | |
263 | else | |
264 | { | |
265 | SID_IDENTIFIER_AUTHORITY * pSIA; | |
266 | ||
267 | pSIA = GetSidIdentifierAuthority (*((PSID *) user_sid)); | |
268 | /* I believe the relative portion is the last 4 bytes (of 6) | |
269 | with msb first. */ | |
270 | the_passwd.pw_uid = ((pSIA->Value[2] << 24) + | |
271 | (pSIA->Value[3] << 16) + | |
272 | (pSIA->Value[4] << 8) + | |
273 | (pSIA->Value[5] << 0)); | |
274 | /* restrict to conventional uid range for normal users */ | |
275 | the_passwd.pw_uid = the_passwd.pw_uid % 60001; | |
276 | ||
277 | /* Get group id */ | |
278 | if (GetTokenInformation (token, TokenPrimaryGroup, | |
279 | (PVOID) user_sid, sizeof (user_sid), &trash)) | |
280 | { | |
281 | SID_IDENTIFIER_AUTHORITY * pSIA; | |
282 | ||
283 | pSIA = GetSidIdentifierAuthority (*((PSID *) user_sid)); | |
284 | the_passwd.pw_gid = ((pSIA->Value[2] << 24) + | |
285 | (pSIA->Value[3] << 16) + | |
286 | (pSIA->Value[4] << 8) + | |
287 | (pSIA->Value[5] << 0)); | |
288 | /* I don't know if this is necessary, but for safety... */ | |
289 | the_passwd.pw_gid = the_passwd.pw_gid % 60001; | |
290 | } | |
291 | else | |
292 | the_passwd.pw_gid = the_passwd.pw_uid; | |
293 | } | |
294 | } | |
295 | /* If security calls are not supported (presumably because we | |
296 | are running under Windows 95), fallback to this. */ | |
297 | else if (GetUserName (name, &length)) | |
298 | { | |
299 | strcpy (the_passwd.pw_name, name); | |
300 | if (stricmp ("administrator", name) == 0) | |
301 | the_passwd.pw_uid = 0; | |
302 | else | |
303 | the_passwd.pw_uid = 123; | |
304 | the_passwd.pw_gid = the_passwd.pw_uid; | |
305 | } | |
306 | else | |
307 | { | |
308 | strcpy (the_passwd.pw_name, "unknown"); | |
309 | the_passwd.pw_uid = 123; | |
310 | the_passwd.pw_gid = 123; | |
d1c1c3d2 | 311 | } |
95ed0025 | 312 | |
480b0c5b GV |
313 | /* Ensure HOME and SHELL are defined. */ |
314 | if (getenv ("HOME") == NULL) | |
ca149beb | 315 | abort (); |
480b0c5b | 316 | if (getenv ("SHELL") == NULL) |
ca149beb | 317 | abort (); |
95ed0025 | 318 | |
480b0c5b GV |
319 | /* Set dir and shell from environment variables. */ |
320 | strcpy (the_passwd.pw_dir, getenv ("HOME")); | |
321 | strcpy (the_passwd.pw_shell, getenv ("SHELL")); | |
bd4a449f | 322 | |
480b0c5b GV |
323 | if (token) |
324 | CloseHandle (token); | |
95ed0025 RS |
325 | } |
326 | ||
95ed0025 | 327 | int |
480b0c5b | 328 | random () |
95ed0025 | 329 | { |
480b0c5b GV |
330 | /* rand () on NT gives us 15 random bits...hack together 30 bits. */ |
331 | return ((rand () << 15) | rand ()); | |
95ed0025 RS |
332 | } |
333 | ||
95ed0025 | 334 | void |
480b0c5b | 335 | srandom (int seed) |
95ed0025 | 336 | { |
480b0c5b | 337 | srand (seed); |
95ed0025 RS |
338 | } |
339 | ||
76b3903d | 340 | |
cbe39279 RS |
341 | /* Normalize filename by converting all path separators to |
342 | the specified separator. Also conditionally convert upper | |
343 | case path name components to lower case. */ | |
344 | ||
345 | static void | |
346 | normalize_filename (fp, path_sep) | |
347 | register char *fp; | |
348 | char path_sep; | |
349 | { | |
350 | char sep; | |
351 | char *elem; | |
352 | ||
5162ffce MB |
353 | /* Always lower-case drive letters a-z, even if the filesystem |
354 | preserves case in filenames. | |
355 | This is so filenames can be compared by string comparison | |
356 | functions that are case-sensitive. Even case-preserving filesystems | |
357 | do not distinguish case in drive letters. */ | |
358 | if (fp[1] == ':' && *fp >= 'A' && *fp <= 'Z') | |
359 | { | |
360 | *fp += 'a' - 'A'; | |
361 | fp += 2; | |
362 | } | |
363 | ||
fbd6baed | 364 | if (NILP (Vw32_downcase_file_names)) |
cbe39279 RS |
365 | { |
366 | while (*fp) | |
367 | { | |
368 | if (*fp == '/' || *fp == '\\') | |
369 | *fp = path_sep; | |
370 | fp++; | |
371 | } | |
372 | return; | |
373 | } | |
374 | ||
375 | sep = path_sep; /* convert to this path separator */ | |
376 | elem = fp; /* start of current path element */ | |
377 | ||
378 | do { | |
379 | if (*fp >= 'a' && *fp <= 'z') | |
380 | elem = 0; /* don't convert this element */ | |
381 | ||
382 | if (*fp == 0 || *fp == ':') | |
383 | { | |
384 | sep = *fp; /* restore current separator (or 0) */ | |
385 | *fp = '/'; /* after conversion of this element */ | |
386 | } | |
387 | ||
388 | if (*fp == '/' || *fp == '\\') | |
389 | { | |
390 | if (elem && elem != fp) | |
391 | { | |
392 | *fp = 0; /* temporary end of string */ | |
393 | _strlwr (elem); /* while we convert to lower case */ | |
394 | } | |
395 | *fp = sep; /* convert (or restore) path separator */ | |
396 | elem = fp + 1; /* next element starts after separator */ | |
397 | sep = path_sep; | |
398 | } | |
399 | } while (*fp++); | |
400 | } | |
401 | ||
480b0c5b | 402 | /* Destructively turn backslashes into slashes. */ |
95ed0025 | 403 | void |
480b0c5b GV |
404 | dostounix_filename (p) |
405 | register char *p; | |
95ed0025 | 406 | { |
cbe39279 | 407 | normalize_filename (p, '/'); |
95ed0025 RS |
408 | } |
409 | ||
480b0c5b | 410 | /* Destructively turn slashes into backslashes. */ |
95ed0025 | 411 | void |
480b0c5b GV |
412 | unixtodos_filename (p) |
413 | register char *p; | |
95ed0025 | 414 | { |
cbe39279 | 415 | normalize_filename (p, '\\'); |
95ed0025 RS |
416 | } |
417 | ||
480b0c5b GV |
418 | /* Remove all CR's that are followed by a LF. |
419 | (From msdos.c...probably should figure out a way to share it, | |
420 | although this code isn't going to ever change.) */ | |
35f0d482 | 421 | int |
480b0c5b GV |
422 | crlf_to_lf (n, buf) |
423 | register int n; | |
424 | register unsigned char *buf; | |
35f0d482 | 425 | { |
480b0c5b GV |
426 | unsigned char *np = buf; |
427 | unsigned char *startp = buf; | |
428 | unsigned char *endp = buf + n; | |
35f0d482 | 429 | |
480b0c5b GV |
430 | if (n == 0) |
431 | return n; | |
432 | while (buf < endp - 1) | |
95ed0025 | 433 | { |
480b0c5b GV |
434 | if (*buf == 0x0d) |
435 | { | |
436 | if (*(++buf) != 0x0a) | |
437 | *np++ = 0x0d; | |
438 | } | |
439 | else | |
440 | *np++ = *buf++; | |
95ed0025 | 441 | } |
480b0c5b GV |
442 | if (buf < endp) |
443 | *np++ = *buf++; | |
444 | return np - startp; | |
95ed0025 RS |
445 | } |
446 | ||
76b3903d GV |
447 | /* Parse the root part of file name, if present. Return length and |
448 | optionally store pointer to char after root. */ | |
449 | static int | |
450 | parse_root (char * name, char ** pPath) | |
451 | { | |
452 | char * start = name; | |
453 | ||
454 | if (name == NULL) | |
455 | return 0; | |
456 | ||
457 | /* find the root name of the volume if given */ | |
458 | if (isalpha (name[0]) && name[1] == ':') | |
459 | { | |
460 | /* skip past drive specifier */ | |
461 | name += 2; | |
462 | if (IS_DIRECTORY_SEP (name[0])) | |
463 | name++; | |
464 | } | |
465 | else if (IS_DIRECTORY_SEP (name[0]) && IS_DIRECTORY_SEP (name[1])) | |
466 | { | |
467 | int slashes = 2; | |
468 | name += 2; | |
469 | do | |
470 | { | |
471 | if (IS_DIRECTORY_SEP (*name) && --slashes == 0) | |
472 | break; | |
473 | name++; | |
474 | } | |
475 | while ( *name ); | |
476 | if (IS_DIRECTORY_SEP (name[0])) | |
477 | name++; | |
478 | } | |
479 | ||
480 | if (pPath) | |
481 | *pPath = name; | |
482 | ||
483 | return name - start; | |
484 | } | |
485 | ||
486 | /* Get long base name for name; name is assumed to be absolute. */ | |
487 | static int | |
488 | get_long_basename (char * name, char * buf, int size) | |
489 | { | |
490 | WIN32_FIND_DATA find_data; | |
491 | HANDLE dir_handle; | |
492 | int len = 0; | |
493 | ||
9ab8560d | 494 | /* must be valid filename, no wild cards or other invalid characters */ |
bb1584c8 RS |
495 | if (strpbrk (name, "*?|<>\"")) |
496 | return 0; | |
497 | ||
76b3903d GV |
498 | dir_handle = FindFirstFile (name, &find_data); |
499 | if (dir_handle != INVALID_HANDLE_VALUE) | |
500 | { | |
501 | if ((len = strlen (find_data.cFileName)) < size) | |
502 | memcpy (buf, find_data.cFileName, len + 1); | |
503 | else | |
504 | len = 0; | |
505 | FindClose (dir_handle); | |
506 | } | |
507 | return len; | |
508 | } | |
509 | ||
510 | /* Get long name for file, if possible (assumed to be absolute). */ | |
511 | BOOL | |
512 | w32_get_long_filename (char * name, char * buf, int size) | |
513 | { | |
514 | char * o = buf; | |
515 | char * p; | |
516 | char * q; | |
517 | char full[ MAX_PATH ]; | |
518 | int len; | |
519 | ||
520 | len = strlen (name); | |
521 | if (len >= MAX_PATH) | |
522 | return FALSE; | |
523 | ||
524 | /* Use local copy for destructive modification. */ | |
525 | memcpy (full, name, len+1); | |
526 | unixtodos_filename (full); | |
527 | ||
528 | /* Copy root part verbatim. */ | |
529 | len = parse_root (full, &p); | |
530 | memcpy (o, full, len); | |
531 | o += len; | |
4f8ac0b2 | 532 | *o = '\0'; |
76b3903d GV |
533 | size -= len; |
534 | ||
4f8ac0b2 | 535 | while (p != NULL && *p) |
76b3903d GV |
536 | { |
537 | q = p; | |
538 | p = strchr (q, '\\'); | |
539 | if (p) *p = '\0'; | |
540 | len = get_long_basename (full, o, size); | |
541 | if (len > 0) | |
542 | { | |
543 | o += len; | |
544 | size -= len; | |
545 | if (p != NULL) | |
546 | { | |
547 | *p++ = '\\'; | |
548 | if (size < 2) | |
549 | return FALSE; | |
550 | *o++ = '\\'; | |
551 | size--; | |
552 | *o = '\0'; | |
553 | } | |
554 | } | |
555 | else | |
556 | return FALSE; | |
557 | } | |
76b3903d GV |
558 | |
559 | return TRUE; | |
560 | } | |
561 | ||
9d3355d1 GV |
562 | int |
563 | is_unc_volume (const char *filename) | |
564 | { | |
565 | const char *ptr = filename; | |
566 | ||
567 | if (!IS_DIRECTORY_SEP (ptr[0]) || !IS_DIRECTORY_SEP (ptr[1]) || !ptr[2]) | |
568 | return 0; | |
569 | ||
570 | if (strpbrk (ptr + 2, "*?|<>\"\\/")) | |
571 | return 0; | |
572 | ||
573 | return 1; | |
574 | } | |
76b3903d | 575 | |
95ed0025 RS |
576 | /* Routines that are no-ops on NT but are defined to get Emacs to compile. */ |
577 | ||
95ed0025 RS |
578 | int |
579 | sigsetmask (int signal_mask) | |
580 | { | |
581 | return 0; | |
582 | } | |
583 | ||
8f900f6e AI |
584 | int |
585 | sigmask (int sig) | |
586 | { | |
587 | return 0; | |
588 | } | |
589 | ||
95ed0025 RS |
590 | int |
591 | sigblock (int sig) | |
592 | { | |
593 | return 0; | |
594 | } | |
595 | ||
8f900f6e AI |
596 | int |
597 | sigunblock (int sig) | |
598 | { | |
599 | return 0; | |
600 | } | |
601 | ||
95ed0025 RS |
602 | int |
603 | setpgrp (int pid, int gid) | |
604 | { | |
605 | return 0; | |
606 | } | |
607 | ||
608 | int | |
609 | alarm (int seconds) | |
610 | { | |
611 | return 0; | |
612 | } | |
613 | ||
c6624584 | 614 | void |
95ed0025 RS |
615 | unrequest_sigio (void) |
616 | { | |
c6624584 | 617 | return; |
95ed0025 RS |
618 | } |
619 | ||
c6624584 | 620 | void |
95ed0025 RS |
621 | request_sigio (void) |
622 | { | |
c6624584 | 623 | return; |
95ed0025 RS |
624 | } |
625 | ||
480b0c5b | 626 | #define REG_ROOT "SOFTWARE\\GNU\\Emacs" |
f332b293 GV |
627 | |
628 | LPBYTE | |
fbd6baed | 629 | w32_get_resource (key, lpdwtype) |
f332b293 GV |
630 | char *key; |
631 | LPDWORD lpdwtype; | |
632 | { | |
633 | LPBYTE lpvalue; | |
634 | HKEY hrootkey = NULL; | |
635 | DWORD cbData; | |
636 | BOOL ok = FALSE; | |
637 | ||
638 | /* Check both the current user and the local machine to see if | |
639 | we have any resources. */ | |
640 | ||
641 | if (RegOpenKeyEx (HKEY_CURRENT_USER, REG_ROOT, 0, KEY_READ, &hrootkey) == ERROR_SUCCESS) | |
642 | { | |
643 | lpvalue = NULL; | |
644 | ||
645 | if (RegQueryValueEx (hrootkey, key, NULL, NULL, NULL, &cbData) == ERROR_SUCCESS | |
646 | && (lpvalue = (LPBYTE) xmalloc (cbData)) != NULL | |
647 | && RegQueryValueEx (hrootkey, key, NULL, lpdwtype, lpvalue, &cbData) == ERROR_SUCCESS) | |
648 | { | |
649 | return (lpvalue); | |
650 | } | |
651 | ||
652 | if (lpvalue) xfree (lpvalue); | |
653 | ||
654 | RegCloseKey (hrootkey); | |
655 | } | |
656 | ||
657 | if (RegOpenKeyEx (HKEY_LOCAL_MACHINE, REG_ROOT, 0, KEY_READ, &hrootkey) == ERROR_SUCCESS) | |
658 | { | |
659 | lpvalue = NULL; | |
660 | ||
76b3903d GV |
661 | if (RegQueryValueEx (hrootkey, key, NULL, NULL, NULL, &cbData) == ERROR_SUCCESS |
662 | && (lpvalue = (LPBYTE) xmalloc (cbData)) != NULL | |
663 | && RegQueryValueEx (hrootkey, key, NULL, lpdwtype, lpvalue, &cbData) == ERROR_SUCCESS) | |
f332b293 GV |
664 | { |
665 | return (lpvalue); | |
666 | } | |
667 | ||
668 | if (lpvalue) xfree (lpvalue); | |
669 | ||
670 | RegCloseKey (hrootkey); | |
671 | } | |
672 | ||
673 | return (NULL); | |
674 | } | |
675 | ||
75b08edb GV |
676 | char *get_emacs_configuration (void); |
677 | extern Lisp_Object Vsystem_configuration; | |
678 | ||
f332b293 | 679 | void |
aa7b87b0 | 680 | init_environment (char ** argv) |
f332b293 | 681 | { |
b3308d2e KH |
682 | static const char * const tempdirs[] = { |
683 | "$TMPDIR", "$TEMP", "$TMP", "c:/" | |
684 | }; | |
685 | int i; | |
686 | const int imax = sizeof (tempdirs) / sizeof (tempdirs[0]); | |
687 | ||
688 | /* Make sure they have a usable $TMPDIR. Many Emacs functions use | |
689 | temporary files and assume "/tmp" if $TMPDIR is unset, which | |
690 | will break on DOS/Windows. Refuse to work if we cannot find | |
691 | a directory, not even "c:/", usable for that purpose. */ | |
692 | for (i = 0; i < imax ; i++) | |
693 | { | |
694 | const char *tmp = tempdirs[i]; | |
695 | ||
696 | if (*tmp == '$') | |
697 | tmp = getenv (tmp + 1); | |
698 | /* Note that `access' can lie to us if the directory resides on a | |
699 | read-only filesystem, like CD-ROM or a write-protected floppy. | |
700 | The only way to be really sure is to actually create a file and | |
701 | see if it succeeds. But I think that's too much to ask. */ | |
a302c7ae | 702 | if (tmp && _access (tmp, D_OK) == 0) |
b3308d2e KH |
703 | { |
704 | char * var = alloca (strlen (tmp) + 8); | |
705 | sprintf (var, "TMPDIR=%s", tmp); | |
aca583b2 | 706 | _putenv (strdup (var)); |
b3308d2e KH |
707 | break; |
708 | } | |
709 | } | |
710 | if (i >= imax) | |
711 | cmd_error_internal | |
712 | (Fcons (Qerror, | |
713 | Fcons (build_string ("no usable temporary directories found!!"), | |
714 | Qnil)), | |
715 | "While setting TMPDIR: "); | |
716 | ||
ca149beb AI |
717 | /* Check for environment variables and use registry settings if they |
718 | don't exist. Fallback on default values where applicable. */ | |
f332b293 | 719 | { |
480b0c5b GV |
720 | int i; |
721 | LPBYTE lpval; | |
722 | DWORD dwType; | |
69fb0241 | 723 | char locale_name[32]; |
f332b293 | 724 | |
ca149beb AI |
725 | static struct env_entry |
726 | { | |
727 | char * name; | |
728 | char * def_value; | |
729 | } env_vars[] = | |
730 | { | |
731 | {"HOME", "C:/"}, | |
732 | {"PRELOAD_WINSOCK", NULL}, | |
733 | {"emacs_dir", "C:/emacs"}, | |
cc14250a | 734 | {"EMACSLOADPATH", "%emacs_dir%/site-lisp;%emacs_dir%/../site-lisp;%emacs_dir%/lisp;%emacs_dir%/leim"}, |
ca149beb AI |
735 | {"SHELL", "%emacs_dir%/bin/cmdproxy.exe"}, |
736 | {"EMACSDATA", "%emacs_dir%/etc"}, | |
737 | {"EMACSPATH", "%emacs_dir%/bin"}, | |
738 | {"EMACSLOCKDIR", "%emacs_dir%/lock"}, | |
76b3903d | 739 | /* We no longer set INFOPATH because Info-default-directory-list |
ca149beb AI |
740 | is then ignored. */ |
741 | /* {"INFOPATH", "%emacs_dir%/info"}, */ | |
742 | {"EMACSDOC", "%emacs_dir%/etc"}, | |
69fb0241 JR |
743 | {"TERM", "cmd"}, |
744 | {"LANG", NULL}, | |
480b0c5b GV |
745 | }; |
746 | ||
69fb0241 JR |
747 | /* Get default locale info and use it for LANG. */ |
748 | if (GetLocaleInfo (LOCALE_USER_DEFAULT, | |
749 | LOCALE_SABBREVLANGNAME | LOCALE_USE_CP_ACP, | |
750 | locale_name, sizeof (locale_name))) | |
751 | { | |
752 | for (i = 0; i < (sizeof (env_vars) / sizeof (env_vars[0])); i++) | |
753 | { | |
754 | if (strcmp (env_vars[i].name, "LANG") == 0) | |
755 | { | |
756 | env_vars[i].def_value = locale_name; | |
757 | break; | |
758 | } | |
759 | } | |
760 | } | |
761 | ||
ca149beb AI |
762 | #define SET_ENV_BUF_SIZE (4 * MAX_PATH) /* to cover EMACSLOADPATH */ |
763 | ||
764 | /* Treat emacs_dir specially: set it unconditionally based on our | |
765 | location, if it appears that we are running from the bin subdir | |
766 | of a standard installation. */ | |
767 | { | |
768 | char *p; | |
769 | char modname[MAX_PATH]; | |
770 | ||
771 | if (!GetModuleFileName (NULL, modname, MAX_PATH)) | |
772 | abort (); | |
773 | if ((p = strrchr (modname, '\\')) == NULL) | |
774 | abort (); | |
775 | *p = 0; | |
776 | ||
777 | if ((p = strrchr (modname, '\\')) && stricmp (p, "\\bin") == 0) | |
778 | { | |
779 | char buf[SET_ENV_BUF_SIZE]; | |
780 | ||
781 | *p = 0; | |
782 | for (p = modname; *p; p++) | |
783 | if (*p == '\\') *p = '/'; | |
784 | ||
785 | _snprintf (buf, sizeof(buf)-1, "emacs_dir=%s", modname); | |
a302c7ae | 786 | _putenv (strdup (buf)); |
ca149beb AI |
787 | } |
788 | } | |
789 | ||
69fb0241 | 790 | for (i = 0; i < (sizeof (env_vars) / sizeof (env_vars[0])); i++) |
f332b293 | 791 | { |
ca149beb | 792 | if (!getenv (env_vars[i].name)) |
480b0c5b | 793 | { |
ca149beb | 794 | int dont_free = 0; |
480b0c5b | 795 | |
ca149beb AI |
796 | if ((lpval = w32_get_resource (env_vars[i].name, &dwType)) == NULL) |
797 | { | |
798 | lpval = env_vars[i].def_value; | |
799 | dwType = REG_EXPAND_SZ; | |
800 | dont_free = 1; | |
480b0c5b | 801 | } |
ca149beb AI |
802 | |
803 | if (lpval) | |
480b0c5b | 804 | { |
ca149beb AI |
805 | if (dwType == REG_EXPAND_SZ) |
806 | { | |
807 | char buf1[SET_ENV_BUF_SIZE], buf2[SET_ENV_BUF_SIZE]; | |
808 | ||
809 | ExpandEnvironmentStrings ((LPSTR) lpval, buf1, sizeof(buf1)); | |
810 | _snprintf (buf2, sizeof(buf2)-1, "%s=%s", env_vars[i].name, buf1); | |
a302c7ae | 811 | _putenv (strdup (buf2)); |
ca149beb AI |
812 | } |
813 | else if (dwType == REG_SZ) | |
814 | { | |
815 | char buf[SET_ENV_BUF_SIZE]; | |
f332b293 | 816 | |
ca149beb | 817 | _snprintf (buf, sizeof(buf)-1, "%s=%s", env_vars[i].name, lpval); |
a302c7ae | 818 | _putenv (strdup (buf)); |
ca149beb | 819 | } |
f332b293 | 820 | |
ca149beb AI |
821 | if (!dont_free) |
822 | xfree (lpval); | |
823 | } | |
480b0c5b GV |
824 | } |
825 | } | |
826 | } | |
827 | ||
75b08edb GV |
828 | /* Rebuild system configuration to reflect invoking system. */ |
829 | Vsystem_configuration = build_string (EMACS_CONFIGURATION); | |
830 | ||
76b3903d GV |
831 | /* Another special case: on NT, the PATH variable is actually named |
832 | "Path" although cmd.exe (perhaps NT itself) arranges for | |
833 | environment variable lookup and setting to be case insensitive. | |
834 | However, Emacs assumes a fully case sensitive environment, so we | |
835 | need to change "Path" to "PATH" to match the expectations of | |
836 | various elisp packages. We do this by the sneaky method of | |
837 | modifying the string in the C runtime environ entry. | |
838 | ||
839 | The same applies to COMSPEC. */ | |
840 | { | |
841 | char ** envp; | |
842 | ||
843 | for (envp = environ; *envp; envp++) | |
844 | if (_strnicmp (*envp, "PATH=", 5) == 0) | |
845 | memcpy (*envp, "PATH=", 5); | |
846 | else if (_strnicmp (*envp, "COMSPEC=", 8) == 0) | |
847 | memcpy (*envp, "COMSPEC=", 8); | |
848 | } | |
849 | ||
850 | /* Remember the initial working directory for getwd, then make the | |
851 | real wd be the location of emacs.exe to avoid conflicts when | |
852 | renaming or deleting directories. (We also don't call chdir when | |
853 | running subprocesses for the same reason.) */ | |
854 | if (!GetCurrentDirectory (MAXPATHLEN, startup_dir)) | |
855 | abort (); | |
856 | ||
857 | { | |
858 | char *p; | |
aa7b87b0 | 859 | static char modname[MAX_PATH]; |
76b3903d GV |
860 | |
861 | if (!GetModuleFileName (NULL, modname, MAX_PATH)) | |
862 | abort (); | |
863 | if ((p = strrchr (modname, '\\')) == NULL) | |
864 | abort (); | |
865 | *p = 0; | |
866 | ||
867 | SetCurrentDirectory (modname); | |
aa7b87b0 AI |
868 | |
869 | /* Ensure argv[0] has the full path to Emacs. */ | |
870 | *p = '\\'; | |
871 | argv[0] = modname; | |
76b3903d GV |
872 | } |
873 | ||
20af4831 JR |
874 | /* Determine if there is a middle mouse button, to allow parse_button |
875 | to decide whether right mouse events should be mouse-2 or | |
876 | mouse-3. */ | |
877 | XSETINT (Vw32_num_mouse_buttons, GetSystemMetrics (SM_CMOUSEBUTTONS)); | |
878 | ||
480b0c5b GV |
879 | init_user_info (); |
880 | } | |
881 | ||
bf794306 EZ |
882 | char * |
883 | emacs_root_dir (void) | |
884 | { | |
885 | static char root_dir[FILENAME_MAX]; | |
886 | const char *p; | |
887 | ||
888 | p = getenv ("emacs_dir"); | |
889 | if (p == NULL) | |
890 | abort (); | |
891 | strcpy (root_dir, p); | |
892 | root_dir[parse_root (root_dir, NULL)] = '\0'; | |
893 | dostounix_filename (root_dir); | |
894 | return root_dir; | |
895 | } | |
896 | ||
480b0c5b GV |
897 | /* We don't have scripts to automatically determine the system configuration |
898 | for Emacs before it's compiled, and we don't want to have to make the | |
899 | user enter it, so we define EMACS_CONFIGURATION to invoke this runtime | |
900 | routine. */ | |
901 | ||
480b0c5b GV |
902 | char * |
903 | get_emacs_configuration (void) | |
904 | { | |
905 | char *arch, *oem, *os; | |
c5247da2 | 906 | int build_num; |
a302c7ae | 907 | static char configuration_buffer[32]; |
480b0c5b GV |
908 | |
909 | /* Determine the processor type. */ | |
910 | switch (get_processor_type ()) | |
911 | { | |
912 | ||
913 | #ifdef PROCESSOR_INTEL_386 | |
914 | case PROCESSOR_INTEL_386: | |
915 | case PROCESSOR_INTEL_486: | |
916 | case PROCESSOR_INTEL_PENTIUM: | |
917 | arch = "i386"; | |
918 | break; | |
919 | #endif | |
920 | ||
921 | #ifdef PROCESSOR_INTEL_860 | |
922 | case PROCESSOR_INTEL_860: | |
923 | arch = "i860"; | |
924 | break; | |
925 | #endif | |
926 | ||
927 | #ifdef PROCESSOR_MIPS_R2000 | |
928 | case PROCESSOR_MIPS_R2000: | |
929 | case PROCESSOR_MIPS_R3000: | |
930 | case PROCESSOR_MIPS_R4000: | |
931 | arch = "mips"; | |
932 | break; | |
933 | #endif | |
934 | ||
935 | #ifdef PROCESSOR_ALPHA_21064 | |
936 | case PROCESSOR_ALPHA_21064: | |
937 | arch = "alpha"; | |
938 | break; | |
939 | #endif | |
940 | ||
941 | default: | |
942 | arch = "unknown"; | |
943 | break; | |
f332b293 | 944 | } |
480b0c5b | 945 | |
a302c7ae AI |
946 | /* Use the OEM field to reflect the compiler/library combination. */ |
947 | #ifdef _MSC_VER | |
948 | #define COMPILER_NAME "msvc" | |
949 | #else | |
950 | #ifdef __GNUC__ | |
951 | #define COMPILER_NAME "mingw" | |
952 | #else | |
953 | #define COMPILER_NAME "unknown" | |
954 | #endif | |
955 | #endif | |
956 | oem = COMPILER_NAME; | |
480b0c5b | 957 | |
c5247da2 GV |
958 | switch (osinfo_cache.dwPlatformId) { |
959 | case VER_PLATFORM_WIN32_NT: | |
960 | os = "nt"; | |
961 | build_num = osinfo_cache.dwBuildNumber; | |
962 | break; | |
963 | case VER_PLATFORM_WIN32_WINDOWS: | |
964 | if (osinfo_cache.dwMinorVersion == 0) { | |
965 | os = "windows95"; | |
966 | } else { | |
967 | os = "windows98"; | |
968 | } | |
969 | build_num = LOWORD (osinfo_cache.dwBuildNumber); | |
970 | break; | |
971 | case VER_PLATFORM_WIN32s: | |
972 | /* Not supported, should not happen. */ | |
973 | os = "windows32s"; | |
974 | build_num = LOWORD (osinfo_cache.dwBuildNumber); | |
975 | break; | |
976 | default: | |
977 | os = "unknown"; | |
978 | build_num = 0; | |
979 | break; | |
980 | } | |
981 | ||
982 | if (osinfo_cache.dwPlatformId == VER_PLATFORM_WIN32_NT) { | |
983 | sprintf (configuration_buffer, "%s-%s-%s%d.%d.%d", arch, oem, os, | |
984 | get_w32_major_version (), get_w32_minor_version (), build_num); | |
985 | } else { | |
986 | sprintf (configuration_buffer, "%s-%s-%s.%d", arch, oem, os, build_num); | |
987 | } | |
480b0c5b | 988 | |
480b0c5b | 989 | return configuration_buffer; |
f332b293 GV |
990 | } |
991 | ||
a302c7ae AI |
992 | char * |
993 | get_emacs_configuration_options (void) | |
994 | { | |
995 | static char options_buffer[256]; | |
996 | ||
997 | /* Work out the effective configure options for this build. */ | |
998 | #ifdef _MSC_VER | |
999 | #define COMPILER_VERSION "--with-msvc (%d.%02d)", _MSC_VER / 100, _MSC_VER % 100 | |
1000 | #else | |
1001 | #ifdef __GNUC__ | |
1002 | #define COMPILER_VERSION "--with-gcc (%d.%d)", __GNUC__, __GNUC_MINOR__ | |
1003 | #else | |
1004 | #define COMPILER_VERSION "" | |
1005 | #endif | |
1006 | #endif | |
1007 | ||
1008 | sprintf (options_buffer, COMPILER_VERSION); | |
1009 | #ifdef EMACSDEBUG | |
1010 | strcat (options_buffer, " --no-opt"); | |
1011 | #endif | |
1012 | #ifdef USER_CFLAGS | |
1013 | strcat (options_buffer, " --cflags"); | |
1014 | strcat (options_buffer, USER_CFLAGS); | |
1015 | #endif | |
1016 | #ifdef USER_LDFLAGS | |
1017 | strcat (options_buffer, " --ldflags"); | |
1018 | strcat (options_buffer, USER_LDFLAGS); | |
1019 | #endif | |
1020 | return options_buffer; | |
1021 | } | |
1022 | ||
1023 | ||
35f0d482 KH |
1024 | #include <sys/timeb.h> |
1025 | ||
1026 | /* Emulate gettimeofday (Ulrich Leodolter, 1/11/95). */ | |
1027 | void | |
1028 | gettimeofday (struct timeval *tv, struct timezone *tz) | |
1029 | { | |
a302c7ae | 1030 | struct timeb tb; |
35f0d482 KH |
1031 | _ftime (&tb); |
1032 | ||
1033 | tv->tv_sec = tb.time; | |
1034 | tv->tv_usec = tb.millitm * 1000L; | |
1035 | if (tz) | |
1036 | { | |
1037 | tz->tz_minuteswest = tb.timezone; /* minutes west of Greenwich */ | |
1038 | tz->tz_dsttime = tb.dstflag; /* type of dst correction */ | |
1039 | } | |
1040 | } | |
35f0d482 | 1041 | |
480b0c5b | 1042 | /* ------------------------------------------------------------------------- */ |
fbd6baed | 1043 | /* IO support and wrapper functions for W32 API. */ |
480b0c5b | 1044 | /* ------------------------------------------------------------------------- */ |
95ed0025 | 1045 | |
480b0c5b GV |
1046 | /* Place a wrapper around the MSVC version of ctime. It returns NULL |
1047 | on network directories, so we handle that case here. | |
1048 | (Ulrich Leodolter, 1/11/95). */ | |
1049 | char * | |
1050 | sys_ctime (const time_t *t) | |
1051 | { | |
1052 | char *str = (char *) ctime (t); | |
1053 | return (str ? str : "Sun Jan 01 00:00:00 1970"); | |
1054 | } | |
1055 | ||
1056 | /* Emulate sleep...we could have done this with a define, but that | |
1057 | would necessitate including windows.h in the files that used it. | |
1058 | This is much easier. */ | |
1059 | void | |
1060 | sys_sleep (int seconds) | |
1061 | { | |
1062 | Sleep (seconds * 1000); | |
1063 | } | |
1064 | ||
76b3903d | 1065 | /* Internal MSVC functions for low-level descriptor munging */ |
480b0c5b GV |
1066 | extern int __cdecl _set_osfhnd (int fd, long h); |
1067 | extern int __cdecl _free_osfhnd (int fd); | |
1068 | ||
1069 | /* parallel array of private info on file handles */ | |
1070 | filedesc fd_info [ MAXDESC ]; | |
1071 | ||
76b3903d GV |
1072 | typedef struct volume_info_data { |
1073 | struct volume_info_data * next; | |
1074 | ||
1075 | /* time when info was obtained */ | |
1076 | DWORD timestamp; | |
1077 | ||
1078 | /* actual volume info */ | |
1079 | char * root_dir; | |
480b0c5b GV |
1080 | DWORD serialnum; |
1081 | DWORD maxcomp; | |
1082 | DWORD flags; | |
76b3903d GV |
1083 | char * name; |
1084 | char * type; | |
1085 | } volume_info_data; | |
1086 | ||
1087 | /* Global referenced by various functions. */ | |
1088 | static volume_info_data volume_info; | |
1089 | ||
1090 | /* Vector to indicate which drives are local and fixed (for which cached | |
1091 | data never expires). */ | |
1092 | static BOOL fixed_drives[26]; | |
1093 | ||
1094 | /* Consider cached volume information to be stale if older than 10s, | |
1095 | at least for non-local drives. Info for fixed drives is never stale. */ | |
1096 | #define DRIVE_INDEX( c ) ( (c) <= 'Z' ? (c) - 'A' : (c) - 'a' ) | |
1097 | #define VOLINFO_STILL_VALID( root_dir, info ) \ | |
1098 | ( ( isalpha (root_dir[0]) && \ | |
1099 | fixed_drives[ DRIVE_INDEX (root_dir[0]) ] ) \ | |
1100 | || GetTickCount () - info->timestamp < 10000 ) | |
1101 | ||
1102 | /* Cache support functions. */ | |
1103 | ||
1104 | /* Simple linked list with linear search is sufficient. */ | |
1105 | static volume_info_data *volume_cache = NULL; | |
1106 | ||
1107 | static volume_info_data * | |
1108 | lookup_volume_info (char * root_dir) | |
1109 | { | |
1110 | volume_info_data * info; | |
1111 | ||
1112 | for (info = volume_cache; info; info = info->next) | |
1113 | if (stricmp (info->root_dir, root_dir) == 0) | |
1114 | break; | |
1115 | return info; | |
1116 | } | |
1117 | ||
1118 | static void | |
1119 | add_volume_info (char * root_dir, volume_info_data * info) | |
1120 | { | |
a302c7ae | 1121 | info->root_dir = xstrdup (root_dir); |
76b3903d GV |
1122 | info->next = volume_cache; |
1123 | volume_cache = info; | |
1124 | } | |
1125 | ||
1126 | ||
1127 | /* Wrapper for GetVolumeInformation, which uses caching to avoid | |
1128 | performance penalty (~2ms on 486 for local drives, 7.5ms for local | |
1129 | cdrom drive, ~5-10ms or more for remote drives on LAN). */ | |
1130 | volume_info_data * | |
1131 | GetCachedVolumeInformation (char * root_dir) | |
1132 | { | |
1133 | volume_info_data * info; | |
1134 | char default_root[ MAX_PATH ]; | |
1135 | ||
1136 | /* NULL for root_dir means use root from current directory. */ | |
1137 | if (root_dir == NULL) | |
1138 | { | |
1139 | if (GetCurrentDirectory (MAX_PATH, default_root) == 0) | |
1140 | return NULL; | |
1141 | parse_root (default_root, &root_dir); | |
1142 | *root_dir = 0; | |
1143 | root_dir = default_root; | |
1144 | } | |
1145 | ||
1146 | /* Local fixed drives can be cached permanently. Removable drives | |
1147 | cannot be cached permanently, since the volume name and serial | |
1148 | number (if nothing else) can change. Remote drives should be | |
1149 | treated as if they are removable, since there is no sure way to | |
1150 | tell whether they are or not. Also, the UNC association of drive | |
1151 | letters mapped to remote volumes can be changed at any time (even | |
1152 | by other processes) without notice. | |
1153 | ||
1154 | As a compromise, so we can benefit from caching info for remote | |
1155 | volumes, we use a simple expiry mechanism to invalidate cache | |
1156 | entries that are more than ten seconds old. */ | |
1157 | ||
1158 | #if 0 | |
1159 | /* No point doing this, because WNetGetConnection is even slower than | |
1160 | GetVolumeInformation, consistently taking ~50ms on a 486 (FWIW, | |
1161 | GetDriveType is about the only call of this type which does not | |
1162 | involve network access, and so is extremely quick). */ | |
1163 | ||
1164 | /* Map drive letter to UNC if remote. */ | |
1165 | if ( isalpha( root_dir[0] ) && !fixed[ DRIVE_INDEX( root_dir[0] ) ] ) | |
1166 | { | |
1167 | char remote_name[ 256 ]; | |
1168 | char drive[3] = { root_dir[0], ':' }; | |
1169 | ||
1170 | if (WNetGetConnection (drive, remote_name, sizeof (remote_name)) | |
1171 | == NO_ERROR) | |
1172 | /* do something */ ; | |
1173 | } | |
1174 | #endif | |
1175 | ||
1176 | info = lookup_volume_info (root_dir); | |
1177 | ||
1178 | if (info == NULL || ! VOLINFO_STILL_VALID (root_dir, info)) | |
1179 | { | |
1180 | char name[ 256 ]; | |
1181 | DWORD serialnum; | |
1182 | DWORD maxcomp; | |
1183 | DWORD flags; | |
1184 | char type[ 256 ]; | |
1185 | ||
1186 | /* Info is not cached, or is stale. */ | |
1187 | if (!GetVolumeInformation (root_dir, | |
1188 | name, sizeof (name), | |
1189 | &serialnum, | |
1190 | &maxcomp, | |
1191 | &flags, | |
1192 | type, sizeof (type))) | |
1193 | return NULL; | |
1194 | ||
1195 | /* Cache the volume information for future use, overwriting existing | |
1196 | entry if present. */ | |
1197 | if (info == NULL) | |
1198 | { | |
1199 | info = (volume_info_data *) xmalloc (sizeof (volume_info_data)); | |
1200 | add_volume_info (root_dir, info); | |
1201 | } | |
1202 | else | |
1203 | { | |
a302c7ae AI |
1204 | xfree (info->name); |
1205 | xfree (info->type); | |
76b3903d GV |
1206 | } |
1207 | ||
a302c7ae | 1208 | info->name = xstrdup (name); |
76b3903d GV |
1209 | info->serialnum = serialnum; |
1210 | info->maxcomp = maxcomp; | |
1211 | info->flags = flags; | |
a302c7ae | 1212 | info->type = xstrdup (type); |
76b3903d GV |
1213 | info->timestamp = GetTickCount (); |
1214 | } | |
1215 | ||
1216 | return info; | |
1217 | } | |
480b0c5b GV |
1218 | |
1219 | /* Get information on the volume where name is held; set path pointer to | |
1220 | start of pathname in name (past UNC header\volume header if present). */ | |
1221 | int | |
1222 | get_volume_info (const char * name, const char ** pPath) | |
95ed0025 | 1223 | { |
480b0c5b GV |
1224 | char temp[MAX_PATH]; |
1225 | char *rootname = NULL; /* default to current volume */ | |
76b3903d | 1226 | volume_info_data * info; |
480b0c5b GV |
1227 | |
1228 | if (name == NULL) | |
1229 | return FALSE; | |
1230 | ||
1231 | /* find the root name of the volume if given */ | |
1232 | if (isalpha (name[0]) && name[1] == ':') | |
1233 | { | |
1234 | rootname = temp; | |
1235 | temp[0] = *name++; | |
1236 | temp[1] = *name++; | |
1237 | temp[2] = '\\'; | |
1238 | temp[3] = 0; | |
1239 | } | |
1240 | else if (IS_DIRECTORY_SEP (name[0]) && IS_DIRECTORY_SEP (name[1])) | |
95ed0025 | 1241 | { |
480b0c5b GV |
1242 | char *str = temp; |
1243 | int slashes = 4; | |
1244 | rootname = temp; | |
1245 | do | |
1246 | { | |
1247 | if (IS_DIRECTORY_SEP (*name) && --slashes == 0) | |
1248 | break; | |
1249 | *str++ = *name++; | |
1250 | } | |
1251 | while ( *name ); | |
1252 | ||
480b0c5b GV |
1253 | *str++ = '\\'; |
1254 | *str = 0; | |
95ed0025 | 1255 | } |
480b0c5b GV |
1256 | |
1257 | if (pPath) | |
1258 | *pPath = name; | |
1259 | ||
76b3903d GV |
1260 | info = GetCachedVolumeInformation (rootname); |
1261 | if (info != NULL) | |
95ed0025 | 1262 | { |
76b3903d GV |
1263 | /* Set global referenced by other functions. */ |
1264 | volume_info = *info; | |
480b0c5b | 1265 | return TRUE; |
95ed0025 | 1266 | } |
480b0c5b GV |
1267 | return FALSE; |
1268 | } | |
1269 | ||
1270 | /* Determine if volume is FAT format (ie. only supports short 8.3 | |
1271 | names); also set path pointer to start of pathname in name. */ | |
1272 | int | |
1273 | is_fat_volume (const char * name, const char ** pPath) | |
1274 | { | |
1275 | if (get_volume_info (name, pPath)) | |
1276 | return (volume_info.maxcomp == 12); | |
1277 | return FALSE; | |
1278 | } | |
1279 | ||
1280 | /* Map filename to a legal 8.3 name if necessary. */ | |
1281 | const char * | |
fbd6baed | 1282 | map_w32_filename (const char * name, const char ** pPath) |
480b0c5b GV |
1283 | { |
1284 | static char shortname[MAX_PATH]; | |
1285 | char * str = shortname; | |
1286 | char c; | |
480b0c5b | 1287 | char * path; |
76b3903d | 1288 | const char * save_name = name; |
480b0c5b | 1289 | |
ca149beb AI |
1290 | if (strlen (name) >= MAX_PATH) |
1291 | { | |
1292 | /* Return a filename which will cause callers to fail. */ | |
1293 | strcpy (shortname, "?"); | |
1294 | return shortname; | |
1295 | } | |
1296 | ||
a302c7ae | 1297 | if (is_fat_volume (name, (const char **)&path)) /* truncate to 8.3 */ |
95ed0025 | 1298 | { |
480b0c5b GV |
1299 | register int left = 8; /* maximum number of chars in part */ |
1300 | register int extn = 0; /* extension added? */ | |
1301 | register int dots = 2; /* maximum number of dots allowed */ | |
1302 | ||
1303 | while (name < path) | |
1304 | *str++ = *name++; /* skip past UNC header */ | |
1305 | ||
1306 | while ((c = *name++)) | |
1307 | { | |
1308 | switch ( c ) | |
1309 | { | |
1310 | case '\\': | |
1311 | case '/': | |
1312 | *str++ = '\\'; | |
1313 | extn = 0; /* reset extension flags */ | |
1314 | dots = 2; /* max 2 dots */ | |
1315 | left = 8; /* max length 8 for main part */ | |
1316 | break; | |
1317 | case ':': | |
1318 | *str++ = ':'; | |
1319 | extn = 0; /* reset extension flags */ | |
1320 | dots = 2; /* max 2 dots */ | |
1321 | left = 8; /* max length 8 for main part */ | |
1322 | break; | |
1323 | case '.': | |
1324 | if ( dots ) | |
1325 | { | |
1326 | /* Convert path components of the form .xxx to _xxx, | |
1327 | but leave . and .. as they are. This allows .emacs | |
1328 | to be read as _emacs, for example. */ | |
1329 | ||
1330 | if (! *name || | |
1331 | *name == '.' || | |
1332 | IS_DIRECTORY_SEP (*name)) | |
1333 | { | |
1334 | *str++ = '.'; | |
1335 | dots--; | |
1336 | } | |
1337 | else | |
1338 | { | |
1339 | *str++ = '_'; | |
1340 | left--; | |
1341 | dots = 0; | |
1342 | } | |
1343 | } | |
1344 | else if ( !extn ) | |
1345 | { | |
1346 | *str++ = '.'; | |
1347 | extn = 1; /* we've got an extension */ | |
1348 | left = 3; /* 3 chars in extension */ | |
1349 | } | |
1350 | else | |
1351 | { | |
1352 | /* any embedded dots after the first are converted to _ */ | |
1353 | *str++ = '_'; | |
1354 | } | |
1355 | break; | |
1356 | case '~': | |
1357 | case '#': /* don't lose these, they're important */ | |
1358 | if ( ! left ) | |
1359 | str[-1] = c; /* replace last character of part */ | |
1360 | /* FALLTHRU */ | |
1361 | default: | |
1362 | if ( left ) | |
1363 | { | |
1364 | *str++ = tolower (c); /* map to lower case (looks nicer) */ | |
1365 | left--; | |
1366 | dots = 0; /* started a path component */ | |
1367 | } | |
1368 | break; | |
1369 | } | |
1370 | } | |
1371 | *str = '\0'; | |
fc85cb29 RS |
1372 | } |
1373 | else | |
1374 | { | |
1375 | strcpy (shortname, name); | |
1376 | unixtodos_filename (shortname); | |
95ed0025 | 1377 | } |
480b0c5b GV |
1378 | |
1379 | if (pPath) | |
76b3903d | 1380 | *pPath = shortname + (path - save_name); |
480b0c5b | 1381 | |
fc85cb29 | 1382 | return shortname; |
480b0c5b GV |
1383 | } |
1384 | ||
b3308d2e KH |
1385 | static int |
1386 | is_exec (const char * name) | |
1387 | { | |
1388 | char * p = strrchr (name, '.'); | |
1389 | return | |
1390 | (p != NULL | |
1391 | && (stricmp (p, ".exe") == 0 || | |
1392 | stricmp (p, ".com") == 0 || | |
1393 | stricmp (p, ".bat") == 0 || | |
1394 | stricmp (p, ".cmd") == 0)); | |
1395 | } | |
1396 | ||
76b3903d GV |
1397 | /* Emulate the Unix directory procedures opendir, closedir, |
1398 | and readdir. We can't use the procedures supplied in sysdep.c, | |
1399 | so we provide them here. */ | |
1400 | ||
1401 | struct direct dir_static; /* simulated directory contents */ | |
1402 | static HANDLE dir_find_handle = INVALID_HANDLE_VALUE; | |
1403 | static int dir_is_fat; | |
1404 | static char dir_pathname[MAXPATHLEN+1]; | |
1405 | static WIN32_FIND_DATA dir_find_data; | |
1406 | ||
9d3355d1 GV |
1407 | /* Support shares on a network resource as subdirectories of a read-only |
1408 | root directory. */ | |
1409 | static HANDLE wnet_enum_handle = INVALID_HANDLE_VALUE; | |
1410 | HANDLE open_unc_volume (char *); | |
1411 | char *read_unc_volume (HANDLE, char *, int); | |
1412 | void close_unc_volume (HANDLE); | |
1413 | ||
76b3903d GV |
1414 | DIR * |
1415 | opendir (char *filename) | |
1416 | { | |
1417 | DIR *dirp; | |
1418 | ||
1419 | /* Opening is done by FindFirstFile. However, a read is inherent to | |
1420 | this operation, so we defer the open until read time. */ | |
1421 | ||
76b3903d GV |
1422 | if (dir_find_handle != INVALID_HANDLE_VALUE) |
1423 | return NULL; | |
9d3355d1 GV |
1424 | if (wnet_enum_handle != INVALID_HANDLE_VALUE) |
1425 | return NULL; | |
1426 | ||
1427 | if (is_unc_volume (filename)) | |
1428 | { | |
1429 | wnet_enum_handle = open_unc_volume (filename); | |
1430 | if (wnet_enum_handle == INVALID_HANDLE_VALUE) | |
1431 | return NULL; | |
1432 | } | |
1433 | ||
1434 | if (!(dirp = (DIR *) malloc (sizeof (DIR)))) | |
1435 | return NULL; | |
76b3903d GV |
1436 | |
1437 | dirp->dd_fd = 0; | |
1438 | dirp->dd_loc = 0; | |
1439 | dirp->dd_size = 0; | |
1440 | ||
1441 | strncpy (dir_pathname, map_w32_filename (filename, NULL), MAXPATHLEN); | |
1442 | dir_pathname[MAXPATHLEN] = '\0'; | |
1443 | dir_is_fat = is_fat_volume (filename, NULL); | |
1444 | ||
1445 | return dirp; | |
1446 | } | |
1447 | ||
1448 | void | |
1449 | closedir (DIR *dirp) | |
1450 | { | |
1451 | /* If we have a find-handle open, close it. */ | |
1452 | if (dir_find_handle != INVALID_HANDLE_VALUE) | |
1453 | { | |
1454 | FindClose (dir_find_handle); | |
1455 | dir_find_handle = INVALID_HANDLE_VALUE; | |
1456 | } | |
9d3355d1 GV |
1457 | else if (wnet_enum_handle != INVALID_HANDLE_VALUE) |
1458 | { | |
1459 | close_unc_volume (wnet_enum_handle); | |
1460 | wnet_enum_handle = INVALID_HANDLE_VALUE; | |
1461 | } | |
76b3903d GV |
1462 | xfree ((char *) dirp); |
1463 | } | |
1464 | ||
1465 | struct direct * | |
1466 | readdir (DIR *dirp) | |
1467 | { | |
9d3355d1 GV |
1468 | if (wnet_enum_handle != INVALID_HANDLE_VALUE) |
1469 | { | |
1470 | if (!read_unc_volume (wnet_enum_handle, | |
1471 | dir_find_data.cFileName, | |
1472 | MAX_PATH)) | |
1473 | return NULL; | |
1474 | } | |
76b3903d | 1475 | /* If we aren't dir_finding, do a find-first, otherwise do a find-next. */ |
9d3355d1 | 1476 | else if (dir_find_handle == INVALID_HANDLE_VALUE) |
76b3903d GV |
1477 | { |
1478 | char filename[MAXNAMLEN + 3]; | |
1479 | int ln; | |
1480 | ||
1481 | strcpy (filename, dir_pathname); | |
1482 | ln = strlen (filename) - 1; | |
1483 | if (!IS_DIRECTORY_SEP (filename[ln])) | |
1484 | strcat (filename, "\\"); | |
1485 | strcat (filename, "*"); | |
1486 | ||
1487 | dir_find_handle = FindFirstFile (filename, &dir_find_data); | |
1488 | ||
1489 | if (dir_find_handle == INVALID_HANDLE_VALUE) | |
1490 | return NULL; | |
1491 | } | |
1492 | else | |
1493 | { | |
1494 | if (!FindNextFile (dir_find_handle, &dir_find_data)) | |
1495 | return NULL; | |
1496 | } | |
1497 | ||
1498 | /* Emacs never uses this value, so don't bother making it match | |
1499 | value returned by stat(). */ | |
1500 | dir_static.d_ino = 1; | |
1501 | ||
1502 | dir_static.d_reclen = sizeof (struct direct) - MAXNAMLEN + 3 + | |
1503 | dir_static.d_namlen - dir_static.d_namlen % 4; | |
1504 | ||
1505 | dir_static.d_namlen = strlen (dir_find_data.cFileName); | |
1506 | strcpy (dir_static.d_name, dir_find_data.cFileName); | |
1507 | if (dir_is_fat) | |
1508 | _strlwr (dir_static.d_name); | |
1509 | else if (!NILP (Vw32_downcase_file_names)) | |
1510 | { | |
1511 | register char *p; | |
1512 | for (p = dir_static.d_name; *p; p++) | |
1513 | if (*p >= 'a' && *p <= 'z') | |
1514 | break; | |
1515 | if (!*p) | |
1516 | _strlwr (dir_static.d_name); | |
1517 | } | |
1518 | ||
1519 | return &dir_static; | |
1520 | } | |
1521 | ||
9d3355d1 GV |
1522 | HANDLE |
1523 | open_unc_volume (char *path) | |
1524 | { | |
1525 | NETRESOURCE nr; | |
1526 | HANDLE henum; | |
1527 | int result; | |
1528 | ||
1529 | nr.dwScope = RESOURCE_GLOBALNET; | |
1530 | nr.dwType = RESOURCETYPE_DISK; | |
1531 | nr.dwDisplayType = RESOURCEDISPLAYTYPE_SERVER; | |
1532 | nr.dwUsage = RESOURCEUSAGE_CONTAINER; | |
1533 | nr.lpLocalName = NULL; | |
1534 | nr.lpRemoteName = map_w32_filename (path, NULL); | |
1535 | nr.lpComment = NULL; | |
1536 | nr.lpProvider = NULL; | |
1537 | ||
1538 | result = WNetOpenEnum(RESOURCE_GLOBALNET, RESOURCETYPE_DISK, | |
1539 | RESOURCEUSAGE_CONNECTABLE, &nr, &henum); | |
1540 | ||
1541 | if (result == NO_ERROR) | |
1542 | return henum; | |
1543 | else | |
1544 | return INVALID_HANDLE_VALUE; | |
1545 | } | |
1546 | ||
1547 | char * | |
1548 | read_unc_volume (HANDLE henum, char *readbuf, int size) | |
1549 | { | |
a302c7ae | 1550 | DWORD count; |
9d3355d1 | 1551 | int result; |
a302c7ae | 1552 | DWORD bufsize = 512; |
9d3355d1 GV |
1553 | char *buffer; |
1554 | char *ptr; | |
1555 | ||
1556 | count = 1; | |
1557 | buffer = alloca (bufsize); | |
1558 | result = WNetEnumResource (wnet_enum_handle, &count, buffer, &bufsize); | |
1559 | if (result != NO_ERROR) | |
1560 | return NULL; | |
1561 | ||
1562 | /* WNetEnumResource returns \\resource\share...skip forward to "share". */ | |
1563 | ptr = ((LPNETRESOURCE) buffer)->lpRemoteName; | |
1564 | ptr += 2; | |
1565 | while (*ptr && !IS_DIRECTORY_SEP (*ptr)) ptr++; | |
1566 | ptr++; | |
1567 | ||
1568 | strncpy (readbuf, ptr, size); | |
1569 | return readbuf; | |
1570 | } | |
1571 | ||
1572 | void | |
1573 | close_unc_volume (HANDLE henum) | |
1574 | { | |
1575 | if (henum != INVALID_HANDLE_VALUE) | |
1576 | WNetCloseEnum (henum); | |
1577 | } | |
1578 | ||
1579 | DWORD | |
1580 | unc_volume_file_attributes (char *path) | |
1581 | { | |
1582 | HANDLE henum; | |
1583 | DWORD attrs; | |
1584 | ||
1585 | henum = open_unc_volume (path); | |
1586 | if (henum == INVALID_HANDLE_VALUE) | |
1587 | return -1; | |
1588 | ||
1589 | attrs = FILE_ATTRIBUTE_READONLY | FILE_ATTRIBUTE_DIRECTORY; | |
1590 | ||
1591 | close_unc_volume (henum); | |
1592 | ||
1593 | return attrs; | |
1594 | } | |
1595 | ||
480b0c5b GV |
1596 | |
1597 | /* Shadow some MSVC runtime functions to map requests for long filenames | |
1598 | to reasonable short names if necessary. This was originally added to | |
1599 | permit running Emacs on NT 3.1 on a FAT partition, which doesn't support | |
1600 | long file names. */ | |
1601 | ||
1602 | int | |
1603 | sys_access (const char * path, int mode) | |
1604 | { | |
b3308d2e KH |
1605 | DWORD attributes; |
1606 | ||
1607 | /* MSVC implementation doesn't recognize D_OK. */ | |
1608 | path = map_w32_filename (path, NULL); | |
9d3355d1 GV |
1609 | if (is_unc_volume (path)) |
1610 | { | |
1611 | attributes = unc_volume_file_attributes (path); | |
1612 | if (attributes == -1) { | |
1613 | errno = EACCES; | |
1614 | return -1; | |
1615 | } | |
1616 | } | |
1617 | else if ((attributes = GetFileAttributes (path)) == -1) | |
b3308d2e KH |
1618 | { |
1619 | /* Should try mapping GetLastError to errno; for now just indicate | |
1620 | that path doesn't exist. */ | |
1621 | errno = EACCES; | |
1622 | return -1; | |
1623 | } | |
1624 | if ((mode & X_OK) != 0 && !is_exec (path)) | |
1625 | { | |
1626 | errno = EACCES; | |
1627 | return -1; | |
1628 | } | |
1629 | if ((mode & W_OK) != 0 && (attributes & FILE_ATTRIBUTE_READONLY) != 0) | |
1630 | { | |
1631 | errno = EACCES; | |
1632 | return -1; | |
1633 | } | |
1634 | if ((mode & D_OK) != 0 && (attributes & FILE_ATTRIBUTE_DIRECTORY) == 0) | |
1635 | { | |
1636 | errno = EACCES; | |
1637 | return -1; | |
1638 | } | |
1639 | return 0; | |
480b0c5b GV |
1640 | } |
1641 | ||
1642 | int | |
1643 | sys_chdir (const char * path) | |
1644 | { | |
fbd6baed | 1645 | return _chdir (map_w32_filename (path, NULL)); |
480b0c5b GV |
1646 | } |
1647 | ||
1648 | int | |
1649 | sys_chmod (const char * path, int mode) | |
1650 | { | |
fbd6baed | 1651 | return _chmod (map_w32_filename (path, NULL), mode); |
480b0c5b GV |
1652 | } |
1653 | ||
1654 | int | |
1655 | sys_creat (const char * path, int mode) | |
1656 | { | |
fbd6baed | 1657 | return _creat (map_w32_filename (path, NULL), mode); |
480b0c5b GV |
1658 | } |
1659 | ||
1660 | FILE * | |
1661 | sys_fopen(const char * path, const char * mode) | |
1662 | { | |
1663 | int fd; | |
1664 | int oflag; | |
1665 | const char * mode_save = mode; | |
1666 | ||
1667 | /* Force all file handles to be non-inheritable. This is necessary to | |
1668 | ensure child processes don't unwittingly inherit handles that might | |
1669 | prevent future file access. */ | |
1670 | ||
1671 | if (mode[0] == 'r') | |
1672 | oflag = O_RDONLY; | |
1673 | else if (mode[0] == 'w' || mode[0] == 'a') | |
1674 | oflag = O_WRONLY | O_CREAT | O_TRUNC; | |
95ed0025 | 1675 | else |
480b0c5b GV |
1676 | return NULL; |
1677 | ||
1678 | /* Only do simplistic option parsing. */ | |
1679 | while (*++mode) | |
1680 | if (mode[0] == '+') | |
1681 | { | |
1682 | oflag &= ~(O_RDONLY | O_WRONLY); | |
1683 | oflag |= O_RDWR; | |
1684 | } | |
1685 | else if (mode[0] == 'b') | |
1686 | { | |
1687 | oflag &= ~O_TEXT; | |
1688 | oflag |= O_BINARY; | |
1689 | } | |
1690 | else if (mode[0] == 't') | |
1691 | { | |
1692 | oflag &= ~O_BINARY; | |
1693 | oflag |= O_TEXT; | |
1694 | } | |
1695 | else break; | |
1696 | ||
fbd6baed | 1697 | fd = _open (map_w32_filename (path, NULL), oflag | _O_NOINHERIT, 0644); |
480b0c5b GV |
1698 | if (fd < 0) |
1699 | return NULL; | |
1700 | ||
76b3903d | 1701 | return _fdopen (fd, mode_save); |
95ed0025 | 1702 | } |
480b0c5b | 1703 | |
76b3903d | 1704 | /* This only works on NTFS volumes, but is useful to have. */ |
480b0c5b | 1705 | int |
76b3903d | 1706 | sys_link (const char * old, const char * new) |
480b0c5b | 1707 | { |
76b3903d GV |
1708 | HANDLE fileh; |
1709 | int result = -1; | |
1710 | char oldname[MAX_PATH], newname[MAX_PATH]; | |
1711 | ||
1712 | if (old == NULL || new == NULL) | |
1713 | { | |
1714 | errno = ENOENT; | |
1715 | return -1; | |
1716 | } | |
1717 | ||
1718 | strcpy (oldname, map_w32_filename (old, NULL)); | |
1719 | strcpy (newname, map_w32_filename (new, NULL)); | |
1720 | ||
1721 | fileh = CreateFile (oldname, 0, 0, NULL, OPEN_EXISTING, | |
1722 | FILE_FLAG_BACKUP_SEMANTICS, NULL); | |
1723 | if (fileh != INVALID_HANDLE_VALUE) | |
1724 | { | |
1725 | int wlen; | |
1726 | ||
1727 | /* Confusingly, the "alternate" stream name field does not apply | |
1728 | when restoring a hard link, and instead contains the actual | |
1729 | stream data for the link (ie. the name of the link to create). | |
1730 | The WIN32_STREAM_ID structure before the cStreamName field is | |
1731 | the stream header, which is then immediately followed by the | |
1732 | stream data. */ | |
1733 | ||
1734 | struct { | |
1735 | WIN32_STREAM_ID wid; | |
1736 | WCHAR wbuffer[MAX_PATH]; /* extra space for link name */ | |
1737 | } data; | |
1738 | ||
1739 | wlen = MultiByteToWideChar (CP_ACP, MB_PRECOMPOSED, newname, -1, | |
1740 | data.wid.cStreamName, MAX_PATH); | |
1741 | if (wlen > 0) | |
1742 | { | |
1743 | LPVOID context = NULL; | |
1744 | DWORD wbytes = 0; | |
1745 | ||
1746 | data.wid.dwStreamId = BACKUP_LINK; | |
1747 | data.wid.dwStreamAttributes = 0; | |
1748 | data.wid.Size.LowPart = wlen * sizeof(WCHAR); | |
1749 | data.wid.Size.HighPart = 0; | |
1750 | data.wid.dwStreamNameSize = 0; | |
1751 | ||
1752 | if (BackupWrite (fileh, (LPBYTE)&data, | |
1753 | offsetof (WIN32_STREAM_ID, cStreamName) | |
1754 | + data.wid.Size.LowPart, | |
1755 | &wbytes, FALSE, FALSE, &context) | |
1756 | && BackupWrite (fileh, NULL, 0, &wbytes, TRUE, FALSE, &context)) | |
1757 | { | |
1758 | /* succeeded */ | |
1759 | result = 0; | |
1760 | } | |
1761 | else | |
1762 | { | |
1763 | /* Should try mapping GetLastError to errno; for now just | |
1764 | indicate a general error (eg. links not supported). */ | |
1765 | errno = EINVAL; // perhaps EMLINK? | |
1766 | } | |
1767 | } | |
1768 | ||
1769 | CloseHandle (fileh); | |
1770 | } | |
1771 | else | |
1772 | errno = ENOENT; | |
1773 | ||
1774 | return result; | |
480b0c5b GV |
1775 | } |
1776 | ||
1777 | int | |
1778 | sys_mkdir (const char * path) | |
1779 | { | |
fbd6baed | 1780 | return _mkdir (map_w32_filename (path, NULL)); |
480b0c5b GV |
1781 | } |
1782 | ||
9d1778b1 RS |
1783 | /* Because of long name mapping issues, we need to implement this |
1784 | ourselves. Also, MSVC's _mktemp returns NULL when it can't generate | |
1785 | a unique name, instead of setting the input template to an empty | |
1786 | string. | |
1787 | ||
1788 | Standard algorithm seems to be use pid or tid with a letter on the | |
1789 | front (in place of the 6 X's) and cycle through the letters to find a | |
1790 | unique name. We extend that to allow any reasonable character as the | |
1791 | first of the 6 X's. */ | |
480b0c5b GV |
1792 | char * |
1793 | sys_mktemp (char * template) | |
1794 | { | |
9d1778b1 RS |
1795 | char * p; |
1796 | int i; | |
1797 | unsigned uid = GetCurrentThreadId (); | |
1798 | static char first_char[] = "abcdefghijklmnopqrstuvwyz0123456789!%-_@#"; | |
1799 | ||
1800 | if (template == NULL) | |
1801 | return NULL; | |
1802 | p = template + strlen (template); | |
1803 | i = 5; | |
1804 | /* replace up to the last 5 X's with uid in decimal */ | |
1805 | while (--p >= template && p[0] == 'X' && --i >= 0) | |
1806 | { | |
1807 | p[0] = '0' + uid % 10; | |
1808 | uid /= 10; | |
1809 | } | |
1810 | ||
1811 | if (i < 0 && p[0] == 'X') | |
1812 | { | |
1813 | i = 0; | |
1814 | do | |
1815 | { | |
1816 | int save_errno = errno; | |
1817 | p[0] = first_char[i]; | |
1818 | if (sys_access (template, 0) < 0) | |
1819 | { | |
1820 | errno = save_errno; | |
1821 | return template; | |
1822 | } | |
1823 | } | |
1824 | while (++i < sizeof (first_char)); | |
1825 | } | |
1826 | ||
1827 | /* Template is badly formed or else we can't generate a unique name, | |
1828 | so return empty string */ | |
1829 | template[0] = 0; | |
1830 | return template; | |
480b0c5b GV |
1831 | } |
1832 | ||
1833 | int | |
1834 | sys_open (const char * path, int oflag, int mode) | |
1835 | { | |
302f0b29 GM |
1836 | const char* mpath = map_w32_filename (path, NULL); |
1837 | /* Try to open file without _O_CREAT, to be able to write to hidden | |
1838 | and system files. Force all file handles to be | |
1839 | non-inheritable. */ | |
1840 | int res = _open (mpath, (oflag & ~_O_CREAT) | _O_NOINHERIT, mode); | |
1841 | if (res >= 0) | |
1842 | return res; | |
1843 | return _open (mpath, oflag | _O_NOINHERIT, mode); | |
480b0c5b GV |
1844 | } |
1845 | ||
1846 | int | |
1847 | sys_rename (const char * oldname, const char * newname) | |
1848 | { | |
cfb5e855 | 1849 | BOOL result; |
b3308d2e | 1850 | char temp[MAX_PATH]; |
480b0c5b | 1851 | |
e9e23e23 | 1852 | /* MoveFile on Windows 95 doesn't correctly change the short file name |
5162ffce MB |
1853 | alias in a number of circumstances (it is not easy to predict when |
1854 | just by looking at oldname and newname, unfortunately). In these | |
1855 | cases, renaming through a temporary name avoids the problem. | |
1856 | ||
e9e23e23 | 1857 | A second problem on Windows 95 is that renaming through a temp name when |
5162ffce MB |
1858 | newname is uppercase fails (the final long name ends up in |
1859 | lowercase, although the short alias might be uppercase) UNLESS the | |
1860 | long temp name is not 8.3. | |
1861 | ||
e9e23e23 | 1862 | So, on Windows 95 we always rename through a temp name, and we make sure |
5162ffce | 1863 | the temp name has a long extension to ensure correct renaming. */ |
480b0c5b | 1864 | |
fbd6baed | 1865 | strcpy (temp, map_w32_filename (oldname, NULL)); |
480b0c5b | 1866 | |
76b3903d | 1867 | if (os_subtype == OS_WIN95) |
480b0c5b | 1868 | { |
b3308d2e | 1869 | char * o; |
480b0c5b | 1870 | char * p; |
b3308d2e KH |
1871 | int i = 0; |
1872 | ||
1873 | oldname = map_w32_filename (oldname, NULL); | |
1874 | if (o = strrchr (oldname, '\\')) | |
1875 | o++; | |
1876 | else | |
1877 | o = (char *) oldname; | |
480b0c5b | 1878 | |
480b0c5b GV |
1879 | if (p = strrchr (temp, '\\')) |
1880 | p++; | |
1881 | else | |
1882 | p = temp; | |
b3308d2e KH |
1883 | |
1884 | do | |
1885 | { | |
1886 | /* Force temp name to require a manufactured 8.3 alias - this | |
1887 | seems to make the second rename work properly. */ | |
f313ee82 | 1888 | sprintf (p, "_.%s.%u", o, i); |
b3308d2e | 1889 | i++; |
58f0cb7e | 1890 | result = rename (oldname, temp); |
b3308d2e KH |
1891 | } |
1892 | /* This loop must surely terminate! */ | |
cfb5e855 | 1893 | while (result < 0 && errno == EEXIST); |
58f0cb7e | 1894 | if (result < 0) |
480b0c5b GV |
1895 | return -1; |
1896 | } | |
1897 | ||
1898 | /* Emulate Unix behaviour - newname is deleted if it already exists | |
5162ffce | 1899 | (at least if it is a file; don't do this for directories). |
76b3903d | 1900 | |
b3308d2e KH |
1901 | Since we mustn't do this if we are just changing the case of the |
1902 | file name (we would end up deleting the file we are trying to | |
1903 | rename!), we let rename detect if the destination file already | |
1904 | exists - that way we avoid the possible pitfalls of trying to | |
1905 | determine ourselves whether two names really refer to the same | |
1906 | file, which is not always possible in the general case. (Consider | |
1907 | all the permutations of shared or subst'd drives, etc.) */ | |
1908 | ||
1909 | newname = map_w32_filename (newname, NULL); | |
eb9ea53f | 1910 | result = rename (temp, newname); |
b3308d2e KH |
1911 | |
1912 | if (result < 0 | |
cfb5e855 | 1913 | && errno == EEXIST |
b3308d2e KH |
1914 | && _chmod (newname, 0666) == 0 |
1915 | && _unlink (newname) == 0) | |
1916 | result = rename (temp, newname); | |
480b0c5b | 1917 | |
eb9ea53f | 1918 | return result; |
480b0c5b GV |
1919 | } |
1920 | ||
1921 | int | |
1922 | sys_rmdir (const char * path) | |
1923 | { | |
fbd6baed | 1924 | return _rmdir (map_w32_filename (path, NULL)); |
480b0c5b GV |
1925 | } |
1926 | ||
1927 | int | |
1928 | sys_unlink (const char * path) | |
1929 | { | |
16bb7578 GV |
1930 | path = map_w32_filename (path, NULL); |
1931 | ||
1932 | /* On Unix, unlink works without write permission. */ | |
1933 | _chmod (path, 0666); | |
1934 | return _unlink (path); | |
480b0c5b GV |
1935 | } |
1936 | ||
1937 | static FILETIME utc_base_ft; | |
1938 | static long double utc_base; | |
1939 | static int init = 0; | |
1940 | ||
1941 | static time_t | |
1942 | convert_time (FILETIME ft) | |
1943 | { | |
1944 | long double ret; | |
1945 | ||
1946 | if (!init) | |
1947 | { | |
1948 | /* Determine the delta between 1-Jan-1601 and 1-Jan-1970. */ | |
1949 | SYSTEMTIME st; | |
1950 | ||
1951 | st.wYear = 1970; | |
1952 | st.wMonth = 1; | |
1953 | st.wDay = 1; | |
1954 | st.wHour = 0; | |
1955 | st.wMinute = 0; | |
1956 | st.wSecond = 0; | |
1957 | st.wMilliseconds = 0; | |
1958 | ||
1959 | SystemTimeToFileTime (&st, &utc_base_ft); | |
1960 | utc_base = (long double) utc_base_ft.dwHighDateTime | |
1961 | * 4096 * 1024 * 1024 + utc_base_ft.dwLowDateTime; | |
1962 | init = 1; | |
1963 | } | |
1964 | ||
1965 | if (CompareFileTime (&ft, &utc_base_ft) < 0) | |
1966 | return 0; | |
1967 | ||
1968 | ret = (long double) ft.dwHighDateTime * 4096 * 1024 * 1024 + ft.dwLowDateTime; | |
1969 | ret -= utc_base; | |
1970 | return (time_t) (ret * 1e-7); | |
1971 | } | |
1972 | ||
480b0c5b GV |
1973 | void |
1974 | convert_from_time_t (time_t time, FILETIME * pft) | |
1975 | { | |
1976 | long double tmp; | |
1977 | ||
1978 | if (!init) | |
1979 | { | |
1980 | /* Determine the delta between 1-Jan-1601 and 1-Jan-1970. */ | |
1981 | SYSTEMTIME st; | |
1982 | ||
1983 | st.wYear = 1970; | |
1984 | st.wMonth = 1; | |
1985 | st.wDay = 1; | |
1986 | st.wHour = 0; | |
1987 | st.wMinute = 0; | |
1988 | st.wSecond = 0; | |
1989 | st.wMilliseconds = 0; | |
1990 | ||
1991 | SystemTimeToFileTime (&st, &utc_base_ft); | |
1992 | utc_base = (long double) utc_base_ft.dwHighDateTime | |
1993 | * 4096 * 1024 * 1024 + utc_base_ft.dwLowDateTime; | |
1994 | init = 1; | |
1995 | } | |
1996 | ||
1997 | /* time in 100ns units since 1-Jan-1601 */ | |
1998 | tmp = (long double) time * 1e7 + utc_base; | |
1999 | pft->dwHighDateTime = (DWORD) (tmp / (4096.0 * 1024 * 1024)); | |
16bb7578 | 2000 | pft->dwLowDateTime = (DWORD) (tmp - (4096.0 * 1024 * 1024) * pft->dwHighDateTime); |
480b0c5b | 2001 | } |
480b0c5b | 2002 | |
76b3903d GV |
2003 | #if 0 |
2004 | /* No reason to keep this; faking inode values either by hashing or even | |
2005 | using the file index from GetInformationByHandle, is not perfect and | |
2006 | so by default Emacs doesn't use the inode values on Windows. | |
2007 | Instead, we now determine file-truename correctly (except for | |
2008 | possible drive aliasing etc). */ | |
2009 | ||
2010 | /* Modified version of "PJW" algorithm (see the "Dragon" compiler book). */ | |
480b0c5b | 2011 | static unsigned |
76b3903d | 2012 | hashval (const unsigned char * str) |
480b0c5b GV |
2013 | { |
2014 | unsigned h = 0; | |
480b0c5b GV |
2015 | while (*str) |
2016 | { | |
2017 | h = (h << 4) + *str++; | |
76b3903d | 2018 | h ^= (h >> 28); |
480b0c5b GV |
2019 | } |
2020 | return h; | |
2021 | } | |
2022 | ||
2023 | /* Return the hash value of the canonical pathname, excluding the | |
2024 | drive/UNC header, to get a hopefully unique inode number. */ | |
76b3903d | 2025 | static DWORD |
480b0c5b GV |
2026 | generate_inode_val (const char * name) |
2027 | { | |
2028 | char fullname[ MAX_PATH ]; | |
2029 | char * p; | |
2030 | unsigned hash; | |
2031 | ||
76b3903d GV |
2032 | /* Get the truly canonical filename, if it exists. (Note: this |
2033 | doesn't resolve aliasing due to subst commands, or recognise hard | |
2034 | links. */ | |
2035 | if (!w32_get_long_filename ((char *)name, fullname, MAX_PATH)) | |
2036 | abort (); | |
2037 | ||
2038 | parse_root (fullname, &p); | |
fbd6baed | 2039 | /* Normal W32 filesystems are still case insensitive. */ |
480b0c5b | 2040 | _strlwr (p); |
76b3903d | 2041 | return hashval (p); |
480b0c5b GV |
2042 | } |
2043 | ||
76b3903d GV |
2044 | #endif |
2045 | ||
480b0c5b GV |
2046 | /* MSVC stat function can't cope with UNC names and has other bugs, so |
2047 | replace it with our own. This also allows us to calculate consistent | |
2048 | inode values without hacks in the main Emacs code. */ | |
2049 | int | |
2050 | stat (const char * path, struct stat * buf) | |
2051 | { | |
eb9ea53f | 2052 | char *name, *r; |
480b0c5b GV |
2053 | WIN32_FIND_DATA wfd; |
2054 | HANDLE fh; | |
76b3903d | 2055 | DWORD fake_inode; |
480b0c5b GV |
2056 | int permission; |
2057 | int len; | |
2058 | int rootdir = FALSE; | |
2059 | ||
2060 | if (path == NULL || buf == NULL) | |
2061 | { | |
2062 | errno = EFAULT; | |
2063 | return -1; | |
2064 | } | |
2065 | ||
fbd6baed | 2066 | name = (char *) map_w32_filename (path, &path); |
9ab8560d | 2067 | /* must be valid filename, no wild cards or other invalid characters */ |
bb1584c8 | 2068 | if (strpbrk (name, "*?|<>\"")) |
480b0c5b GV |
2069 | { |
2070 | errno = ENOENT; | |
2071 | return -1; | |
2072 | } | |
2073 | ||
eb9ea53f GV |
2074 | /* If name is "c:/.." or "/.." then stat "c:/" or "/". */ |
2075 | r = IS_DEVICE_SEP (name[1]) ? &name[2] : name; | |
2076 | if (IS_DIRECTORY_SEP (r[0]) && r[1] == '.' && r[2] == '.' && r[3] == '\0') | |
2077 | { | |
2078 | r[1] = r[2] = '\0'; | |
2079 | } | |
2080 | ||
480b0c5b GV |
2081 | /* Remove trailing directory separator, unless name is the root |
2082 | directory of a drive or UNC volume in which case ensure there | |
2083 | is a trailing separator. */ | |
2084 | len = strlen (name); | |
2085 | rootdir = (path >= name + len - 1 | |
2086 | && (IS_DIRECTORY_SEP (*path) || *path == 0)); | |
2087 | name = strcpy (alloca (len + 2), name); | |
2088 | ||
9d3355d1 GV |
2089 | if (is_unc_volume (name)) |
2090 | { | |
2091 | DWORD attrs = unc_volume_file_attributes (name); | |
2092 | ||
2093 | if (attrs == -1) | |
2094 | return -1; | |
2095 | ||
2096 | memset (&wfd, 0, sizeof (wfd)); | |
2097 | wfd.dwFileAttributes = attrs; | |
2098 | wfd.ftCreationTime = utc_base_ft; | |
2099 | wfd.ftLastAccessTime = utc_base_ft; | |
2100 | wfd.ftLastWriteTime = utc_base_ft; | |
2101 | strcpy (wfd.cFileName, name); | |
2102 | } | |
2103 | else if (rootdir) | |
480b0c5b GV |
2104 | { |
2105 | if (!IS_DIRECTORY_SEP (name[len-1])) | |
2106 | strcat (name, "\\"); | |
2107 | if (GetDriveType (name) < 2) | |
2108 | { | |
2109 | errno = ENOENT; | |
2110 | return -1; | |
2111 | } | |
2112 | memset (&wfd, 0, sizeof (wfd)); | |
2113 | wfd.dwFileAttributes = FILE_ATTRIBUTE_DIRECTORY; | |
2114 | wfd.ftCreationTime = utc_base_ft; | |
2115 | wfd.ftLastAccessTime = utc_base_ft; | |
2116 | wfd.ftLastWriteTime = utc_base_ft; | |
2117 | strcpy (wfd.cFileName, name); | |
2118 | } | |
2119 | else | |
2120 | { | |
2121 | if (IS_DIRECTORY_SEP (name[len-1])) | |
2122 | name[len - 1] = 0; | |
76b3903d GV |
2123 | |
2124 | /* (This is hacky, but helps when doing file completions on | |
2125 | network drives.) Optimize by using information available from | |
2126 | active readdir if possible. */ | |
b19cc00c GV |
2127 | len = strlen (dir_pathname); |
2128 | if (IS_DIRECTORY_SEP (dir_pathname[len-1])) | |
2129 | len--; | |
76b3903d | 2130 | if (dir_find_handle != INVALID_HANDLE_VALUE |
b19cc00c | 2131 | && strnicmp (name, dir_pathname, len) == 0 |
76b3903d GV |
2132 | && IS_DIRECTORY_SEP (name[len]) |
2133 | && stricmp (name + len + 1, dir_static.d_name) == 0) | |
480b0c5b | 2134 | { |
76b3903d GV |
2135 | /* This was the last entry returned by readdir. */ |
2136 | wfd = dir_find_data; | |
2137 | } | |
2138 | else | |
2139 | { | |
2140 | fh = FindFirstFile (name, &wfd); | |
2141 | if (fh == INVALID_HANDLE_VALUE) | |
2142 | { | |
2143 | errno = ENOENT; | |
2144 | return -1; | |
2145 | } | |
2146 | FindClose (fh); | |
480b0c5b | 2147 | } |
480b0c5b GV |
2148 | } |
2149 | ||
2150 | if (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) | |
2151 | { | |
2152 | buf->st_mode = _S_IFDIR; | |
2153 | buf->st_nlink = 2; /* doesn't really matter */ | |
76b3903d | 2154 | fake_inode = 0; /* this doesn't either I think */ |
480b0c5b | 2155 | } |
710ea1b8 RS |
2156 | else if (!NILP (Vw32_get_true_file_attributes) |
2157 | /* No access rights required to get info. */ | |
2158 | && (fh = CreateFile (name, 0, 0, NULL, OPEN_EXISTING, 0, NULL)) | |
2159 | != INVALID_HANDLE_VALUE) | |
480b0c5b | 2160 | { |
480b0c5b GV |
2161 | /* This is more accurate in terms of gettting the correct number |
2162 | of links, but is quite slow (it is noticable when Emacs is | |
2163 | making a list of file name completions). */ | |
2164 | BY_HANDLE_FILE_INFORMATION info; | |
2165 | ||
480b0c5b GV |
2166 | if (GetFileInformationByHandle (fh, &info)) |
2167 | { | |
480b0c5b | 2168 | buf->st_nlink = info.nNumberOfLinks; |
76b3903d GV |
2169 | /* Might as well use file index to fake inode values, but this |
2170 | is not guaranteed to be unique unless we keep a handle open | |
2171 | all the time (even then there are situations where it is | |
2172 | not unique). Reputedly, there are at most 48 bits of info | |
2173 | (on NTFS, presumably less on FAT). */ | |
2174 | fake_inode = info.nFileIndexLow ^ info.nFileIndexHigh; | |
480b0c5b GV |
2175 | } |
2176 | else | |
2177 | { | |
01f31dfb AI |
2178 | buf->st_nlink = 1; |
2179 | fake_inode = 0; | |
2180 | } | |
2181 | ||
2182 | switch (GetFileType (fh)) | |
2183 | { | |
2184 | case FILE_TYPE_DISK: | |
2185 | buf->st_mode = _S_IFREG; | |
2186 | break; | |
2187 | case FILE_TYPE_PIPE: | |
2188 | buf->st_mode = _S_IFIFO; | |
2189 | break; | |
2190 | case FILE_TYPE_CHAR: | |
2191 | case FILE_TYPE_UNKNOWN: | |
2192 | default: | |
2193 | buf->st_mode = _S_IFCHR; | |
480b0c5b | 2194 | } |
01f31dfb | 2195 | CloseHandle (fh); |
76b3903d GV |
2196 | } |
2197 | else | |
2198 | { | |
2199 | /* Don't bother to make this information more accurate. */ | |
480b0c5b GV |
2200 | buf->st_mode = _S_IFREG; |
2201 | buf->st_nlink = 1; | |
76b3903d GV |
2202 | fake_inode = 0; |
2203 | } | |
2204 | ||
2205 | #if 0 | |
2206 | /* Not sure if there is any point in this. */ | |
2207 | if (!NILP (Vw32_generate_fake_inodes)) | |
2208 | fake_inode = generate_inode_val (name); | |
2209 | else if (fake_inode == 0) | |
2210 | { | |
2211 | /* For want of something better, try to make everything unique. */ | |
2212 | static DWORD gen_num = 0; | |
2213 | fake_inode = ++gen_num; | |
480b0c5b | 2214 | } |
76b3903d GV |
2215 | #endif |
2216 | ||
2217 | /* MSVC defines _ino_t to be short; other libc's might not. */ | |
2218 | if (sizeof (buf->st_ino) == 2) | |
2219 | buf->st_ino = fake_inode ^ (fake_inode >> 16); | |
2220 | else | |
2221 | buf->st_ino = fake_inode; | |
480b0c5b GV |
2222 | |
2223 | /* consider files to belong to current user */ | |
2224 | buf->st_uid = the_passwd.pw_uid; | |
2225 | buf->st_gid = the_passwd.pw_gid; | |
2226 | ||
fbd6baed | 2227 | /* volume_info is set indirectly by map_w32_filename */ |
480b0c5b GV |
2228 | buf->st_dev = volume_info.serialnum; |
2229 | buf->st_rdev = volume_info.serialnum; | |
2230 | ||
480b0c5b GV |
2231 | |
2232 | buf->st_size = wfd.nFileSizeLow; | |
2233 | ||
2234 | /* Convert timestamps to Unix format. */ | |
2235 | buf->st_mtime = convert_time (wfd.ftLastWriteTime); | |
2236 | buf->st_atime = convert_time (wfd.ftLastAccessTime); | |
2237 | if (buf->st_atime == 0) buf->st_atime = buf->st_mtime; | |
2238 | buf->st_ctime = convert_time (wfd.ftCreationTime); | |
2239 | if (buf->st_ctime == 0) buf->st_ctime = buf->st_mtime; | |
2240 | ||
2241 | /* determine rwx permissions */ | |
2242 | if (wfd.dwFileAttributes & FILE_ATTRIBUTE_READONLY) | |
2243 | permission = _S_IREAD; | |
2244 | else | |
2245 | permission = _S_IREAD | _S_IWRITE; | |
2246 | ||
2247 | if (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) | |
2248 | permission |= _S_IEXEC; | |
b3308d2e KH |
2249 | else if (is_exec (name)) |
2250 | permission |= _S_IEXEC; | |
480b0c5b GV |
2251 | |
2252 | buf->st_mode |= permission | (permission >> 3) | (permission >> 6); | |
2253 | ||
2254 | return 0; | |
2255 | } | |
2256 | ||
16bb7578 GV |
2257 | /* Provide fstat and utime as well as stat for consistent handling of |
2258 | file timestamps. */ | |
2259 | int | |
2260 | fstat (int desc, struct stat * buf) | |
2261 | { | |
2262 | HANDLE fh = (HANDLE) _get_osfhandle (desc); | |
2263 | BY_HANDLE_FILE_INFORMATION info; | |
2264 | DWORD fake_inode; | |
2265 | int permission; | |
2266 | ||
2267 | switch (GetFileType (fh) & ~FILE_TYPE_REMOTE) | |
2268 | { | |
2269 | case FILE_TYPE_DISK: | |
2270 | buf->st_mode = _S_IFREG; | |
2271 | if (!GetFileInformationByHandle (fh, &info)) | |
2272 | { | |
2273 | errno = EACCES; | |
2274 | return -1; | |
2275 | } | |
2276 | break; | |
2277 | case FILE_TYPE_PIPE: | |
2278 | buf->st_mode = _S_IFIFO; | |
2279 | goto non_disk; | |
2280 | case FILE_TYPE_CHAR: | |
2281 | case FILE_TYPE_UNKNOWN: | |
2282 | default: | |
2283 | buf->st_mode = _S_IFCHR; | |
2284 | non_disk: | |
2285 | memset (&info, 0, sizeof (info)); | |
2286 | info.dwFileAttributes = 0; | |
2287 | info.ftCreationTime = utc_base_ft; | |
2288 | info.ftLastAccessTime = utc_base_ft; | |
2289 | info.ftLastWriteTime = utc_base_ft; | |
2290 | } | |
2291 | ||
2292 | if (info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) | |
2293 | { | |
2294 | buf->st_mode = _S_IFDIR; | |
2295 | buf->st_nlink = 2; /* doesn't really matter */ | |
2296 | fake_inode = 0; /* this doesn't either I think */ | |
2297 | } | |
2298 | else | |
2299 | { | |
2300 | buf->st_nlink = info.nNumberOfLinks; | |
2301 | /* Might as well use file index to fake inode values, but this | |
2302 | is not guaranteed to be unique unless we keep a handle open | |
2303 | all the time (even then there are situations where it is | |
2304 | not unique). Reputedly, there are at most 48 bits of info | |
2305 | (on NTFS, presumably less on FAT). */ | |
2306 | fake_inode = info.nFileIndexLow ^ info.nFileIndexHigh; | |
2307 | } | |
2308 | ||
2309 | /* MSVC defines _ino_t to be short; other libc's might not. */ | |
2310 | if (sizeof (buf->st_ino) == 2) | |
2311 | buf->st_ino = fake_inode ^ (fake_inode >> 16); | |
2312 | else | |
2313 | buf->st_ino = fake_inode; | |
2314 | ||
2315 | /* consider files to belong to current user */ | |
2316 | buf->st_uid = 0; | |
2317 | buf->st_gid = 0; | |
2318 | ||
2319 | buf->st_dev = info.dwVolumeSerialNumber; | |
2320 | buf->st_rdev = info.dwVolumeSerialNumber; | |
2321 | ||
2322 | buf->st_size = info.nFileSizeLow; | |
2323 | ||
2324 | /* Convert timestamps to Unix format. */ | |
2325 | buf->st_mtime = convert_time (info.ftLastWriteTime); | |
2326 | buf->st_atime = convert_time (info.ftLastAccessTime); | |
2327 | if (buf->st_atime == 0) buf->st_atime = buf->st_mtime; | |
2328 | buf->st_ctime = convert_time (info.ftCreationTime); | |
2329 | if (buf->st_ctime == 0) buf->st_ctime = buf->st_mtime; | |
2330 | ||
2331 | /* determine rwx permissions */ | |
2332 | if (info.dwFileAttributes & FILE_ATTRIBUTE_READONLY) | |
2333 | permission = _S_IREAD; | |
2334 | else | |
2335 | permission = _S_IREAD | _S_IWRITE; | |
2336 | ||
2337 | if (info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) | |
2338 | permission |= _S_IEXEC; | |
2339 | else | |
2340 | { | |
2341 | #if 0 /* no way of knowing the filename */ | |
2342 | char * p = strrchr (name, '.'); | |
2343 | if (p != NULL && | |
2344 | (stricmp (p, ".exe") == 0 || | |
2345 | stricmp (p, ".com") == 0 || | |
2346 | stricmp (p, ".bat") == 0 || | |
2347 | stricmp (p, ".cmd") == 0)) | |
2348 | permission |= _S_IEXEC; | |
2349 | #endif | |
2350 | } | |
2351 | ||
2352 | buf->st_mode |= permission | (permission >> 3) | (permission >> 6); | |
2353 | ||
2354 | return 0; | |
2355 | } | |
2356 | ||
2357 | int | |
2358 | utime (const char *name, struct utimbuf *times) | |
2359 | { | |
2360 | struct utimbuf deftime; | |
2361 | HANDLE fh; | |
2362 | FILETIME mtime; | |
2363 | FILETIME atime; | |
2364 | ||
2365 | if (times == NULL) | |
2366 | { | |
2367 | deftime.modtime = deftime.actime = time (NULL); | |
2368 | times = &deftime; | |
2369 | } | |
2370 | ||
2371 | /* Need write access to set times. */ | |
2372 | fh = CreateFile (name, GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, | |
2373 | 0, OPEN_EXISTING, 0, NULL); | |
2374 | if (fh) | |
2375 | { | |
2376 | convert_from_time_t (times->actime, &atime); | |
2377 | convert_from_time_t (times->modtime, &mtime); | |
2378 | if (!SetFileTime (fh, NULL, &atime, &mtime)) | |
2379 | { | |
2380 | CloseHandle (fh); | |
2381 | errno = EACCES; | |
2382 | return -1; | |
2383 | } | |
2384 | CloseHandle (fh); | |
2385 | } | |
2386 | else | |
2387 | { | |
2388 | errno = EINVAL; | |
2389 | return -1; | |
2390 | } | |
2391 | return 0; | |
2392 | } | |
2393 | ||
480b0c5b GV |
2394 | #ifdef HAVE_SOCKETS |
2395 | ||
2396 | /* Wrappers for winsock functions to map between our file descriptors | |
2397 | and winsock's handles; also set h_errno for convenience. | |
2398 | ||
2399 | To allow Emacs to run on systems which don't have winsock support | |
2400 | installed, we dynamically link to winsock on startup if present, and | |
2401 | otherwise provide the minimum necessary functionality | |
2402 | (eg. gethostname). */ | |
2403 | ||
2404 | /* function pointers for relevant socket functions */ | |
2405 | int (PASCAL *pfn_WSAStartup) (WORD wVersionRequired, LPWSADATA lpWSAData); | |
2406 | void (PASCAL *pfn_WSASetLastError) (int iError); | |
2407 | int (PASCAL *pfn_WSAGetLastError) (void); | |
2408 | int (PASCAL *pfn_socket) (int af, int type, int protocol); | |
2409 | int (PASCAL *pfn_bind) (SOCKET s, const struct sockaddr *addr, int namelen); | |
2410 | int (PASCAL *pfn_connect) (SOCKET s, const struct sockaddr *addr, int namelen); | |
2411 | int (PASCAL *pfn_ioctlsocket) (SOCKET s, long cmd, u_long *argp); | |
2412 | int (PASCAL *pfn_recv) (SOCKET s, char * buf, int len, int flags); | |
2413 | int (PASCAL *pfn_send) (SOCKET s, const char * buf, int len, int flags); | |
2414 | int (PASCAL *pfn_closesocket) (SOCKET s); | |
2415 | int (PASCAL *pfn_shutdown) (SOCKET s, int how); | |
2416 | int (PASCAL *pfn_WSACleanup) (void); | |
2417 | ||
2418 | u_short (PASCAL *pfn_htons) (u_short hostshort); | |
2419 | u_short (PASCAL *pfn_ntohs) (u_short netshort); | |
2420 | unsigned long (PASCAL *pfn_inet_addr) (const char * cp); | |
2421 | int (PASCAL *pfn_gethostname) (char * name, int namelen); | |
2422 | struct hostent * (PASCAL *pfn_gethostbyname) (const char * name); | |
2423 | struct servent * (PASCAL *pfn_getservbyname) (const char * name, const char * proto); | |
f1614061 RS |
2424 | |
2425 | /* SetHandleInformation is only needed to make sockets non-inheritable. */ | |
2426 | BOOL (WINAPI *pfn_SetHandleInformation) (HANDLE object, DWORD mask, DWORD flags); | |
2427 | #ifndef HANDLE_FLAG_INHERIT | |
2428 | #define HANDLE_FLAG_INHERIT 1 | |
2429 | #endif | |
480b0c5b | 2430 | |
f249a012 RS |
2431 | HANDLE winsock_lib; |
2432 | static int winsock_inuse; | |
480b0c5b | 2433 | |
f249a012 | 2434 | BOOL |
480b0c5b GV |
2435 | term_winsock (void) |
2436 | { | |
f249a012 | 2437 | if (winsock_lib != NULL && winsock_inuse == 0) |
480b0c5b | 2438 | { |
f249a012 RS |
2439 | /* Not sure what would cause WSAENETDOWN, or even if it can happen |
2440 | after WSAStartup returns successfully, but it seems reasonable | |
2441 | to allow unloading winsock anyway in that case. */ | |
2442 | if (pfn_WSACleanup () == 0 || | |
2443 | pfn_WSAGetLastError () == WSAENETDOWN) | |
2444 | { | |
2445 | if (FreeLibrary (winsock_lib)) | |
2446 | winsock_lib = NULL; | |
2447 | return TRUE; | |
2448 | } | |
480b0c5b | 2449 | } |
f249a012 | 2450 | return FALSE; |
480b0c5b GV |
2451 | } |
2452 | ||
f249a012 RS |
2453 | BOOL |
2454 | init_winsock (int load_now) | |
480b0c5b GV |
2455 | { |
2456 | WSADATA winsockData; | |
2457 | ||
f249a012 RS |
2458 | if (winsock_lib != NULL) |
2459 | return TRUE; | |
f1614061 RS |
2460 | |
2461 | pfn_SetHandleInformation = NULL; | |
2462 | pfn_SetHandleInformation | |
2463 | = (void *) GetProcAddress (GetModuleHandle ("kernel32.dll"), | |
2464 | "SetHandleInformation"); | |
2465 | ||
480b0c5b GV |
2466 | winsock_lib = LoadLibrary ("wsock32.dll"); |
2467 | ||
2468 | if (winsock_lib != NULL) | |
2469 | { | |
2470 | /* dynamically link to socket functions */ | |
2471 | ||
2472 | #define LOAD_PROC(fn) \ | |
2473 | if ((pfn_##fn = (void *) GetProcAddress (winsock_lib, #fn)) == NULL) \ | |
2474 | goto fail; | |
2475 | ||
2476 | LOAD_PROC( WSAStartup ); | |
2477 | LOAD_PROC( WSASetLastError ); | |
2478 | LOAD_PROC( WSAGetLastError ); | |
2479 | LOAD_PROC( socket ); | |
2480 | LOAD_PROC( bind ); | |
2481 | LOAD_PROC( connect ); | |
2482 | LOAD_PROC( ioctlsocket ); | |
2483 | LOAD_PROC( recv ); | |
2484 | LOAD_PROC( send ); | |
2485 | LOAD_PROC( closesocket ); | |
2486 | LOAD_PROC( shutdown ); | |
2487 | LOAD_PROC( htons ); | |
2488 | LOAD_PROC( ntohs ); | |
2489 | LOAD_PROC( inet_addr ); | |
2490 | LOAD_PROC( gethostname ); | |
2491 | LOAD_PROC( gethostbyname ); | |
2492 | LOAD_PROC( getservbyname ); | |
2493 | LOAD_PROC( WSACleanup ); | |
2494 | ||
f249a012 RS |
2495 | #undef LOAD_PROC |
2496 | ||
480b0c5b GV |
2497 | /* specify version 1.1 of winsock */ |
2498 | if (pfn_WSAStartup (0x101, &winsockData) == 0) | |
2499 | { | |
f249a012 RS |
2500 | if (winsockData.wVersion != 0x101) |
2501 | goto fail; | |
2502 | ||
2503 | if (!load_now) | |
2504 | { | |
2505 | /* Report that winsock exists and is usable, but leave | |
2506 | socket functions disabled. I am assuming that calling | |
2507 | WSAStartup does not require any network interaction, | |
2508 | and in particular does not cause or require a dial-up | |
2509 | connection to be established. */ | |
2510 | ||
2511 | pfn_WSACleanup (); | |
2512 | FreeLibrary (winsock_lib); | |
2513 | winsock_lib = NULL; | |
2514 | } | |
2515 | winsock_inuse = 0; | |
2516 | return TRUE; | |
480b0c5b GV |
2517 | } |
2518 | ||
2519 | fail: | |
2520 | FreeLibrary (winsock_lib); | |
f249a012 | 2521 | winsock_lib = NULL; |
480b0c5b | 2522 | } |
f249a012 RS |
2523 | |
2524 | return FALSE; | |
480b0c5b GV |
2525 | } |
2526 | ||
2527 | ||
2528 | int h_errno = 0; | |
2529 | ||
2530 | /* function to set h_errno for compatability; map winsock error codes to | |
2531 | normal system codes where they overlap (non-overlapping definitions | |
2532 | are already in <sys/socket.h> */ | |
2533 | static void set_errno () | |
2534 | { | |
f249a012 | 2535 | if (winsock_lib == NULL) |
480b0c5b GV |
2536 | h_errno = EINVAL; |
2537 | else | |
2538 | h_errno = pfn_WSAGetLastError (); | |
2539 | ||
2540 | switch (h_errno) | |
2541 | { | |
2542 | case WSAEACCES: h_errno = EACCES; break; | |
2543 | case WSAEBADF: h_errno = EBADF; break; | |
2544 | case WSAEFAULT: h_errno = EFAULT; break; | |
2545 | case WSAEINTR: h_errno = EINTR; break; | |
2546 | case WSAEINVAL: h_errno = EINVAL; break; | |
2547 | case WSAEMFILE: h_errno = EMFILE; break; | |
2548 | case WSAENAMETOOLONG: h_errno = ENAMETOOLONG; break; | |
2549 | case WSAENOTEMPTY: h_errno = ENOTEMPTY; break; | |
2550 | } | |
2551 | errno = h_errno; | |
2552 | } | |
2553 | ||
2554 | static void check_errno () | |
2555 | { | |
f249a012 | 2556 | if (h_errno == 0 && winsock_lib != NULL) |
480b0c5b GV |
2557 | pfn_WSASetLastError (0); |
2558 | } | |
2559 | ||
d8fcc1b9 AI |
2560 | /* Extend strerror to handle the winsock-specific error codes. */ |
2561 | struct { | |
2562 | int errnum; | |
2563 | char * msg; | |
2564 | } _wsa_errlist[] = { | |
2565 | WSAEINTR , "Interrupted function call", | |
2566 | WSAEBADF , "Bad file descriptor", | |
2567 | WSAEACCES , "Permission denied", | |
2568 | WSAEFAULT , "Bad address", | |
2569 | WSAEINVAL , "Invalid argument", | |
2570 | WSAEMFILE , "Too many open files", | |
2571 | ||
2572 | WSAEWOULDBLOCK , "Resource temporarily unavailable", | |
2573 | WSAEINPROGRESS , "Operation now in progress", | |
2574 | WSAEALREADY , "Operation already in progress", | |
2575 | WSAENOTSOCK , "Socket operation on non-socket", | |
2576 | WSAEDESTADDRREQ , "Destination address required", | |
2577 | WSAEMSGSIZE , "Message too long", | |
2578 | WSAEPROTOTYPE , "Protocol wrong type for socket", | |
2579 | WSAENOPROTOOPT , "Bad protocol option", | |
2580 | WSAEPROTONOSUPPORT , "Protocol not supported", | |
2581 | WSAESOCKTNOSUPPORT , "Socket type not supported", | |
2582 | WSAEOPNOTSUPP , "Operation not supported", | |
2583 | WSAEPFNOSUPPORT , "Protocol family not supported", | |
2584 | WSAEAFNOSUPPORT , "Address family not supported by protocol family", | |
2585 | WSAEADDRINUSE , "Address already in use", | |
2586 | WSAEADDRNOTAVAIL , "Cannot assign requested address", | |
2587 | WSAENETDOWN , "Network is down", | |
2588 | WSAENETUNREACH , "Network is unreachable", | |
2589 | WSAENETRESET , "Network dropped connection on reset", | |
2590 | WSAECONNABORTED , "Software caused connection abort", | |
2591 | WSAECONNRESET , "Connection reset by peer", | |
2592 | WSAENOBUFS , "No buffer space available", | |
2593 | WSAEISCONN , "Socket is already connected", | |
2594 | WSAENOTCONN , "Socket is not connected", | |
2595 | WSAESHUTDOWN , "Cannot send after socket shutdown", | |
2596 | WSAETOOMANYREFS , "Too many references", /* not sure */ | |
2597 | WSAETIMEDOUT , "Connection timed out", | |
2598 | WSAECONNREFUSED , "Connection refused", | |
2599 | WSAELOOP , "Network loop", /* not sure */ | |
2600 | WSAENAMETOOLONG , "Name is too long", | |
2601 | WSAEHOSTDOWN , "Host is down", | |
2602 | WSAEHOSTUNREACH , "No route to host", | |
2603 | WSAENOTEMPTY , "Buffer not empty", /* not sure */ | |
2604 | WSAEPROCLIM , "Too many processes", | |
2605 | WSAEUSERS , "Too many users", /* not sure */ | |
2606 | WSAEDQUOT , "Double quote in host name", /* really not sure */ | |
2607 | WSAESTALE , "Data is stale", /* not sure */ | |
2608 | WSAEREMOTE , "Remote error", /* not sure */ | |
2609 | ||
2610 | WSASYSNOTREADY , "Network subsystem is unavailable", | |
2611 | WSAVERNOTSUPPORTED , "WINSOCK.DLL version out of range", | |
2612 | WSANOTINITIALISED , "Winsock not initialized successfully", | |
2613 | WSAEDISCON , "Graceful shutdown in progress", | |
2614 | #ifdef WSAENOMORE | |
2615 | WSAENOMORE , "No more operations allowed", /* not sure */ | |
2616 | WSAECANCELLED , "Operation cancelled", /* not sure */ | |
2617 | WSAEINVALIDPROCTABLE , "Invalid procedure table from service provider", | |
2618 | WSAEINVALIDPROVIDER , "Invalid service provider version number", | |
2619 | WSAEPROVIDERFAILEDINIT , "Unable to initialize a service provider", | |
2620 | WSASYSCALLFAILURE , "System call failured", | |
2621 | WSASERVICE_NOT_FOUND , "Service not found", /* not sure */ | |
2622 | WSATYPE_NOT_FOUND , "Class type not found", | |
2623 | WSA_E_NO_MORE , "No more resources available", /* really not sure */ | |
2624 | WSA_E_CANCELLED , "Operation already cancelled", /* really not sure */ | |
2625 | WSAEREFUSED , "Operation refused", /* not sure */ | |
2626 | #endif | |
2627 | ||
2628 | WSAHOST_NOT_FOUND , "Host not found", | |
2629 | WSATRY_AGAIN , "Authoritative host not found during name lookup", | |
2630 | WSANO_RECOVERY , "Non-recoverable error during name lookup", | |
2631 | WSANO_DATA , "Valid name, no data record of requested type", | |
2632 | ||
2633 | -1, NULL | |
2634 | }; | |
2635 | ||
2636 | char * | |
2637 | sys_strerror(int error_no) | |
2638 | { | |
2639 | int i; | |
2640 | static char unknown_msg[40]; | |
2641 | ||
a302c7ae AI |
2642 | if (error_no >= 0 && error_no < sys_nerr) |
2643 | return sys_errlist[error_no]; | |
d8fcc1b9 AI |
2644 | |
2645 | for (i = 0; _wsa_errlist[i].errnum >= 0; i++) | |
2646 | if (_wsa_errlist[i].errnum == error_no) | |
2647 | return _wsa_errlist[i].msg; | |
2648 | ||
2649 | sprintf(unknown_msg, "Unidentified error: %d", error_no); | |
2650 | return unknown_msg; | |
2651 | } | |
2652 | ||
480b0c5b GV |
2653 | /* [andrewi 3-May-96] I've had conflicting results using both methods, |
2654 | but I believe the method of keeping the socket handle separate (and | |
2655 | insuring it is not inheritable) is the correct one. */ | |
2656 | ||
2657 | //#define SOCK_REPLACE_HANDLE | |
2658 | ||
2659 | #ifdef SOCK_REPLACE_HANDLE | |
2660 | #define SOCK_HANDLE(fd) ((SOCKET) _get_osfhandle (fd)) | |
2661 | #else | |
2662 | #define SOCK_HANDLE(fd) ((SOCKET) fd_info[fd].hnd) | |
2663 | #endif | |
2664 | ||
2665 | int | |
2666 | sys_socket(int af, int type, int protocol) | |
2667 | { | |
2668 | int fd; | |
2669 | long s; | |
2670 | child_process * cp; | |
2671 | ||
f249a012 | 2672 | if (winsock_lib == NULL) |
480b0c5b GV |
2673 | { |
2674 | h_errno = ENETDOWN; | |
2675 | return INVALID_SOCKET; | |
2676 | } | |
2677 | ||
2678 | check_errno (); | |
2679 | ||
2680 | /* call the real socket function */ | |
2681 | s = (long) pfn_socket (af, type, protocol); | |
2682 | ||
2683 | if (s != INVALID_SOCKET) | |
2684 | { | |
2685 | /* Although under NT 3.5 _open_osfhandle will accept a socket | |
2686 | handle, if opened with SO_OPENTYPE == SO_SYNCHRONOUS_NONALERT, | |
2687 | that does not work under NT 3.1. However, we can get the same | |
2688 | effect by using a backdoor function to replace an existing | |
2689 | descriptor handle with the one we want. */ | |
2690 | ||
2691 | /* allocate a file descriptor (with appropriate flags) */ | |
2692 | fd = _open ("NUL:", _O_RDWR); | |
2693 | if (fd >= 0) | |
2694 | { | |
2695 | #ifdef SOCK_REPLACE_HANDLE | |
2696 | /* now replace handle to NUL with our socket handle */ | |
2697 | CloseHandle ((HANDLE) _get_osfhandle (fd)); | |
2698 | _free_osfhnd (fd); | |
2699 | _set_osfhnd (fd, s); | |
2700 | /* setmode (fd, _O_BINARY); */ | |
2701 | #else | |
ca149beb AI |
2702 | /* Make a non-inheritable copy of the socket handle. Note |
2703 | that it is possible that sockets aren't actually kernel | |
2704 | handles, which appears to be the case on Windows 9x when | |
2705 | the MS Proxy winsock client is installed. */ | |
480b0c5b | 2706 | { |
f1614061 RS |
2707 | /* Apparently there is a bug in NT 3.51 with some service |
2708 | packs, which prevents using DuplicateHandle to make a | |
2709 | socket handle non-inheritable (causes WSACleanup to | |
2710 | hang). The work-around is to use SetHandleInformation | |
2711 | instead if it is available and implemented. */ | |
ca149beb AI |
2712 | if (pfn_SetHandleInformation) |
2713 | { | |
2714 | pfn_SetHandleInformation ((HANDLE) s, HANDLE_FLAG_INHERIT, 0); | |
2715 | } | |
2716 | else | |
f1614061 | 2717 | { |
ca149beb AI |
2718 | HANDLE parent = GetCurrentProcess (); |
2719 | HANDLE new_s = INVALID_HANDLE_VALUE; | |
2720 | ||
2721 | if (DuplicateHandle (parent, | |
2722 | (HANDLE) s, | |
2723 | parent, | |
2724 | &new_s, | |
2725 | 0, | |
2726 | FALSE, | |
2727 | DUPLICATE_SAME_ACCESS)) | |
2728 | { | |
2729 | /* It is possible that DuplicateHandle succeeds even | |
2730 | though the socket wasn't really a kernel handle, | |
2731 | because a real handle has the same value. So | |
2732 | test whether the new handle really is a socket. */ | |
2733 | long nonblocking = 0; | |
2734 | if (pfn_ioctlsocket ((SOCKET) new_s, FIONBIO, &nonblocking) == 0) | |
2735 | { | |
2736 | pfn_closesocket (s); | |
2737 | s = (SOCKET) new_s; | |
2738 | } | |
2739 | else | |
2740 | { | |
2741 | CloseHandle (new_s); | |
2742 | } | |
2743 | } | |
f1614061 | 2744 | } |
480b0c5b | 2745 | } |
ca149beb | 2746 | fd_info[fd].hnd = (HANDLE) s; |
480b0c5b GV |
2747 | #endif |
2748 | ||
2749 | /* set our own internal flags */ | |
2750 | fd_info[fd].flags = FILE_SOCKET | FILE_BINARY | FILE_READ | FILE_WRITE; | |
2751 | ||
2752 | cp = new_child (); | |
2753 | if (cp) | |
2754 | { | |
2755 | cp->fd = fd; | |
2756 | cp->status = STATUS_READ_ACKNOWLEDGED; | |
2757 | ||
2758 | /* attach child_process to fd_info */ | |
2759 | if (fd_info[ fd ].cp != NULL) | |
2760 | { | |
2761 | DebPrint (("sys_socket: fd_info[%d] apparently in use!\n", fd)); | |
2762 | abort (); | |
2763 | } | |
2764 | ||
2765 | fd_info[ fd ].cp = cp; | |
2766 | ||
2767 | /* success! */ | |
f249a012 | 2768 | winsock_inuse++; /* count open sockets */ |
480b0c5b GV |
2769 | return fd; |
2770 | } | |
2771 | ||
2772 | /* clean up */ | |
2773 | _close (fd); | |
2774 | } | |
2775 | pfn_closesocket (s); | |
2776 | h_errno = EMFILE; | |
2777 | } | |
2778 | set_errno (); | |
2779 | ||
2780 | return -1; | |
2781 | } | |
2782 | ||
2783 | ||
2784 | int | |
2785 | sys_bind (int s, const struct sockaddr * addr, int namelen) | |
2786 | { | |
f249a012 | 2787 | if (winsock_lib == NULL) |
480b0c5b GV |
2788 | { |
2789 | h_errno = ENOTSOCK; | |
2790 | return SOCKET_ERROR; | |
2791 | } | |
2792 | ||
2793 | check_errno (); | |
2794 | if (fd_info[s].flags & FILE_SOCKET) | |
2795 | { | |
2796 | int rc = pfn_bind (SOCK_HANDLE (s), addr, namelen); | |
2797 | if (rc == SOCKET_ERROR) | |
2798 | set_errno (); | |
2799 | return rc; | |
2800 | } | |
2801 | h_errno = ENOTSOCK; | |
2802 | return SOCKET_ERROR; | |
2803 | } | |
2804 | ||
2805 | ||
2806 | int | |
2807 | sys_connect (int s, const struct sockaddr * name, int namelen) | |
2808 | { | |
f249a012 | 2809 | if (winsock_lib == NULL) |
480b0c5b GV |
2810 | { |
2811 | h_errno = ENOTSOCK; | |
2812 | return SOCKET_ERROR; | |
2813 | } | |
2814 | ||
2815 | check_errno (); | |
2816 | if (fd_info[s].flags & FILE_SOCKET) | |
2817 | { | |
2818 | int rc = pfn_connect (SOCK_HANDLE (s), name, namelen); | |
2819 | if (rc == SOCKET_ERROR) | |
2820 | set_errno (); | |
2821 | return rc; | |
2822 | } | |
2823 | h_errno = ENOTSOCK; | |
2824 | return SOCKET_ERROR; | |
2825 | } | |
2826 | ||
2827 | u_short | |
2828 | sys_htons (u_short hostshort) | |
2829 | { | |
f249a012 | 2830 | return (winsock_lib != NULL) ? |
480b0c5b GV |
2831 | pfn_htons (hostshort) : hostshort; |
2832 | } | |
2833 | ||
2834 | u_short | |
2835 | sys_ntohs (u_short netshort) | |
2836 | { | |
f249a012 | 2837 | return (winsock_lib != NULL) ? |
480b0c5b GV |
2838 | pfn_ntohs (netshort) : netshort; |
2839 | } | |
2840 | ||
2841 | unsigned long | |
2842 | sys_inet_addr (const char * cp) | |
2843 | { | |
f249a012 | 2844 | return (winsock_lib != NULL) ? |
480b0c5b GV |
2845 | pfn_inet_addr (cp) : INADDR_NONE; |
2846 | } | |
2847 | ||
2848 | int | |
2849 | sys_gethostname (char * name, int namelen) | |
2850 | { | |
f249a012 | 2851 | if (winsock_lib != NULL) |
480b0c5b GV |
2852 | return pfn_gethostname (name, namelen); |
2853 | ||
2854 | if (namelen > MAX_COMPUTERNAME_LENGTH) | |
a302c7ae | 2855 | return !GetComputerName (name, (DWORD *)&namelen); |
480b0c5b GV |
2856 | |
2857 | h_errno = EFAULT; | |
2858 | return SOCKET_ERROR; | |
2859 | } | |
2860 | ||
2861 | struct hostent * | |
2862 | sys_gethostbyname(const char * name) | |
2863 | { | |
2864 | struct hostent * host; | |
2865 | ||
f249a012 | 2866 | if (winsock_lib == NULL) |
480b0c5b GV |
2867 | { |
2868 | h_errno = ENETDOWN; | |
2869 | return NULL; | |
2870 | } | |
2871 | ||
2872 | check_errno (); | |
2873 | host = pfn_gethostbyname (name); | |
2874 | if (!host) | |
2875 | set_errno (); | |
2876 | return host; | |
2877 | } | |
2878 | ||
2879 | struct servent * | |
2880 | sys_getservbyname(const char * name, const char * proto) | |
2881 | { | |
2882 | struct servent * serv; | |
2883 | ||
f249a012 | 2884 | if (winsock_lib == NULL) |
480b0c5b GV |
2885 | { |
2886 | h_errno = ENETDOWN; | |
2887 | return NULL; | |
2888 | } | |
2889 | ||
2890 | check_errno (); | |
2891 | serv = pfn_getservbyname (name, proto); | |
2892 | if (!serv) | |
2893 | set_errno (); | |
2894 | return serv; | |
2895 | } | |
2896 | ||
380961a6 GV |
2897 | int |
2898 | sys_shutdown (int s, int how) | |
2899 | { | |
380961a6 GV |
2900 | if (winsock_lib == NULL) |
2901 | { | |
2902 | h_errno = ENETDOWN; | |
2903 | return SOCKET_ERROR; | |
2904 | } | |
2905 | ||
2906 | check_errno (); | |
2907 | if (fd_info[s].flags & FILE_SOCKET) | |
2908 | { | |
2909 | int rc = pfn_shutdown (SOCK_HANDLE (s), how); | |
2910 | if (rc == SOCKET_ERROR) | |
2911 | set_errno (); | |
2912 | return rc; | |
2913 | } | |
2914 | h_errno = ENOTSOCK; | |
2915 | return SOCKET_ERROR; | |
2916 | } | |
2917 | ||
480b0c5b GV |
2918 | #endif /* HAVE_SOCKETS */ |
2919 | ||
2920 | ||
2921 | /* Shadow main io functions: we need to handle pipes and sockets more | |
2922 | intelligently, and implement non-blocking mode as well. */ | |
2923 | ||
2924 | int | |
2925 | sys_close (int fd) | |
2926 | { | |
2927 | int rc; | |
2928 | ||
2929 | if (fd < 0 || fd >= MAXDESC) | |
2930 | { | |
2931 | errno = EBADF; | |
2932 | return -1; | |
2933 | } | |
2934 | ||
2935 | if (fd_info[fd].cp) | |
2936 | { | |
2937 | child_process * cp = fd_info[fd].cp; | |
2938 | ||
2939 | fd_info[fd].cp = NULL; | |
2940 | ||
2941 | if (CHILD_ACTIVE (cp)) | |
2942 | { | |
2943 | /* if last descriptor to active child_process then cleanup */ | |
2944 | int i; | |
2945 | for (i = 0; i < MAXDESC; i++) | |
2946 | { | |
2947 | if (i == fd) | |
2948 | continue; | |
2949 | if (fd_info[i].cp == cp) | |
2950 | break; | |
2951 | } | |
2952 | if (i == MAXDESC) | |
2953 | { | |
f249a012 | 2954 | #ifdef HAVE_SOCKETS |
480b0c5b GV |
2955 | if (fd_info[fd].flags & FILE_SOCKET) |
2956 | { | |
f249a012 RS |
2957 | #ifndef SOCK_REPLACE_HANDLE |
2958 | if (winsock_lib == NULL) abort (); | |
480b0c5b GV |
2959 | |
2960 | pfn_shutdown (SOCK_HANDLE (fd), 2); | |
2961 | rc = pfn_closesocket (SOCK_HANDLE (fd)); | |
f249a012 RS |
2962 | #endif |
2963 | winsock_inuse--; /* count open sockets */ | |
480b0c5b GV |
2964 | } |
2965 | #endif | |
2966 | delete_child (cp); | |
2967 | } | |
2968 | } | |
2969 | } | |
2970 | ||
2971 | /* Note that sockets do not need special treatment here (at least on | |
e9e23e23 | 2972 | NT and Windows 95 using the standard tcp/ip stacks) - it appears that |
480b0c5b GV |
2973 | closesocket is equivalent to CloseHandle, which is to be expected |
2974 | because socket handles are fully fledged kernel handles. */ | |
2975 | rc = _close (fd); | |
2976 | ||
2977 | if (rc == 0) | |
2978 | fd_info[fd].flags = 0; | |
2979 | ||
2980 | return rc; | |
2981 | } | |
2982 | ||
2983 | int | |
2984 | sys_dup (int fd) | |
2985 | { | |
2986 | int new_fd; | |
2987 | ||
2988 | new_fd = _dup (fd); | |
2989 | if (new_fd >= 0) | |
2990 | { | |
2991 | /* duplicate our internal info as well */ | |
2992 | fd_info[new_fd] = fd_info[fd]; | |
2993 | } | |
2994 | return new_fd; | |
2995 | } | |
2996 | ||
2997 | ||
2998 | int | |
2999 | sys_dup2 (int src, int dst) | |
3000 | { | |
3001 | int rc; | |
3002 | ||
3003 | if (dst < 0 || dst >= MAXDESC) | |
3004 | { | |
3005 | errno = EBADF; | |
3006 | return -1; | |
3007 | } | |
3008 | ||
3009 | /* make sure we close the destination first if it's a pipe or socket */ | |
3010 | if (src != dst && fd_info[dst].flags != 0) | |
3011 | sys_close (dst); | |
3012 | ||
3013 | rc = _dup2 (src, dst); | |
3014 | if (rc == 0) | |
3015 | { | |
3016 | /* duplicate our internal info as well */ | |
3017 | fd_info[dst] = fd_info[src]; | |
3018 | } | |
3019 | return rc; | |
3020 | } | |
3021 | ||
480b0c5b GV |
3022 | /* Unix pipe() has only one arg */ |
3023 | int | |
3024 | sys_pipe (int * phandles) | |
3025 | { | |
3026 | int rc; | |
3027 | unsigned flags; | |
480b0c5b | 3028 | |
76b3903d GV |
3029 | /* make pipe handles non-inheritable; when we spawn a child, we |
3030 | replace the relevant handle with an inheritable one. Also put | |
3031 | pipes into binary mode; we will do text mode translation ourselves | |
3032 | if required. */ | |
3033 | rc = _pipe (phandles, 0, _O_NOINHERIT | _O_BINARY); | |
480b0c5b GV |
3034 | |
3035 | if (rc == 0) | |
3036 | { | |
7664e306 | 3037 | flags = FILE_PIPE | FILE_READ | FILE_BINARY; |
480b0c5b GV |
3038 | fd_info[phandles[0]].flags = flags; |
3039 | ||
7664e306 | 3040 | flags = FILE_PIPE | FILE_WRITE | FILE_BINARY; |
480b0c5b GV |
3041 | fd_info[phandles[1]].flags = flags; |
3042 | } | |
3043 | ||
3044 | return rc; | |
3045 | } | |
3046 | ||
f7554349 | 3047 | /* From ntproc.c */ |
fbd6baed | 3048 | extern Lisp_Object Vw32_pipe_read_delay; |
f7554349 | 3049 | |
480b0c5b GV |
3050 | /* Function to do blocking read of one byte, needed to implement |
3051 | select. It is only allowed on sockets and pipes. */ | |
3052 | int | |
3053 | _sys_read_ahead (int fd) | |
3054 | { | |
3055 | child_process * cp; | |
3056 | int rc; | |
3057 | ||
3058 | if (fd < 0 || fd >= MAXDESC) | |
3059 | return STATUS_READ_ERROR; | |
3060 | ||
3061 | cp = fd_info[fd].cp; | |
3062 | ||
3063 | if (cp == NULL || cp->fd != fd || cp->status != STATUS_READ_READY) | |
3064 | return STATUS_READ_ERROR; | |
3065 | ||
3066 | if ((fd_info[fd].flags & (FILE_PIPE | FILE_SOCKET)) == 0 | |
3067 | || (fd_info[fd].flags & FILE_READ) == 0) | |
3068 | { | |
3069 | DebPrint (("_sys_read_ahead: internal error: fd %d is not a pipe or socket!\n", fd)); | |
3070 | abort (); | |
3071 | } | |
3072 | ||
3073 | cp->status = STATUS_READ_IN_PROGRESS; | |
3074 | ||
3075 | if (fd_info[fd].flags & FILE_PIPE) | |
f7554349 | 3076 | { |
f7554349 KH |
3077 | rc = _read (fd, &cp->chr, sizeof (char)); |
3078 | ||
3079 | /* Give subprocess time to buffer some more output for us before | |
e9e23e23 | 3080 | reporting that input is available; we need this because Windows 95 |
f7554349 KH |
3081 | connects DOS programs to pipes by making the pipe appear to be |
3082 | the normal console stdout - as a result most DOS programs will | |
3083 | write to stdout without buffering, ie. one character at a | |
fbd6baed | 3084 | time. Even some W32 programs do this - "dir" in a command |
f7554349 KH |
3085 | shell on NT is very slow if we don't do this. */ |
3086 | if (rc > 0) | |
3087 | { | |
fbd6baed | 3088 | int wait = XINT (Vw32_pipe_read_delay); |
f7554349 KH |
3089 | |
3090 | if (wait > 0) | |
3091 | Sleep (wait); | |
3092 | else if (wait < 0) | |
3093 | while (++wait <= 0) | |
3094 | /* Yield remainder of our time slice, effectively giving a | |
3095 | temporary priority boost to the child process. */ | |
3096 | Sleep (0); | |
3097 | } | |
3098 | } | |
480b0c5b GV |
3099 | #ifdef HAVE_SOCKETS |
3100 | else if (fd_info[fd].flags & FILE_SOCKET) | |
3101 | rc = pfn_recv (SOCK_HANDLE (fd), &cp->chr, sizeof (char), 0); | |
3102 | #endif | |
3103 | ||
3104 | if (rc == sizeof (char)) | |
3105 | cp->status = STATUS_READ_SUCCEEDED; | |
3106 | else | |
3107 | cp->status = STATUS_READ_FAILED; | |
3108 | ||
3109 | return cp->status; | |
3110 | } | |
3111 | ||
3112 | int | |
3113 | sys_read (int fd, char * buffer, unsigned int count) | |
3114 | { | |
3115 | int nchars; | |
480b0c5b GV |
3116 | int to_read; |
3117 | DWORD waiting; | |
76b3903d | 3118 | char * orig_buffer = buffer; |
480b0c5b GV |
3119 | |
3120 | if (fd < 0 || fd >= MAXDESC) | |
3121 | { | |
3122 | errno = EBADF; | |
3123 | return -1; | |
3124 | } | |
3125 | ||
3126 | if (fd_info[fd].flags & (FILE_PIPE | FILE_SOCKET)) | |
3127 | { | |
3128 | child_process *cp = fd_info[fd].cp; | |
3129 | ||
3130 | if ((fd_info[fd].flags & FILE_READ) == 0) | |
3131 | { | |
3132 | errno = EBADF; | |
3133 | return -1; | |
3134 | } | |
3135 | ||
76b3903d GV |
3136 | nchars = 0; |
3137 | ||
3138 | /* re-read CR carried over from last read */ | |
3139 | if (fd_info[fd].flags & FILE_LAST_CR) | |
3140 | { | |
3141 | if (fd_info[fd].flags & FILE_BINARY) abort (); | |
3142 | *buffer++ = 0x0d; | |
3143 | count--; | |
3144 | nchars++; | |
f52eb3ef | 3145 | fd_info[fd].flags &= ~FILE_LAST_CR; |
76b3903d GV |
3146 | } |
3147 | ||
480b0c5b GV |
3148 | /* presence of a child_process structure means we are operating in |
3149 | non-blocking mode - otherwise we just call _read directly. | |
3150 | Note that the child_process structure might be missing because | |
3151 | reap_subprocess has been called; in this case the pipe is | |
3152 | already broken, so calling _read on it is okay. */ | |
3153 | if (cp) | |
3154 | { | |
3155 | int current_status = cp->status; | |
3156 | ||
3157 | switch (current_status) | |
3158 | { | |
3159 | case STATUS_READ_FAILED: | |
3160 | case STATUS_READ_ERROR: | |
f52eb3ef GV |
3161 | /* report normal EOF if nothing in buffer */ |
3162 | if (nchars <= 0) | |
3163 | fd_info[fd].flags |= FILE_AT_EOF; | |
3164 | return nchars; | |
480b0c5b GV |
3165 | |
3166 | case STATUS_READ_READY: | |
3167 | case STATUS_READ_IN_PROGRESS: | |
3168 | DebPrint (("sys_read called when read is in progress\n")); | |
3169 | errno = EWOULDBLOCK; | |
3170 | return -1; | |
3171 | ||
3172 | case STATUS_READ_SUCCEEDED: | |
3173 | /* consume read-ahead char */ | |
3174 | *buffer++ = cp->chr; | |
3175 | count--; | |
76b3903d | 3176 | nchars++; |
480b0c5b GV |
3177 | cp->status = STATUS_READ_ACKNOWLEDGED; |
3178 | ResetEvent (cp->char_avail); | |
3179 | ||
3180 | case STATUS_READ_ACKNOWLEDGED: | |
3181 | break; | |
3182 | ||
3183 | default: | |
3184 | DebPrint (("sys_read: bad status %d\n", current_status)); | |
3185 | errno = EBADF; | |
3186 | return -1; | |
3187 | } | |
3188 | ||
3189 | if (fd_info[fd].flags & FILE_PIPE) | |
3190 | { | |
3191 | PeekNamedPipe ((HANDLE) _get_osfhandle (fd), NULL, 0, NULL, &waiting, NULL); | |
3192 | to_read = min (waiting, (DWORD) count); | |
f52eb3ef GV |
3193 | |
3194 | if (to_read > 0) | |
3195 | nchars += _read (fd, buffer, to_read); | |
480b0c5b GV |
3196 | } |
3197 | #ifdef HAVE_SOCKETS | |
3198 | else /* FILE_SOCKET */ | |
3199 | { | |
f249a012 | 3200 | if (winsock_lib == NULL) abort (); |
480b0c5b GV |
3201 | |
3202 | /* do the equivalent of a non-blocking read */ | |
3203 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONREAD, &waiting); | |
76b3903d | 3204 | if (waiting == 0 && nchars == 0) |
480b0c5b GV |
3205 | { |
3206 | h_errno = errno = EWOULDBLOCK; | |
3207 | return -1; | |
3208 | } | |
3209 | ||
480b0c5b GV |
3210 | if (waiting) |
3211 | { | |
3212 | /* always use binary mode for sockets */ | |
76b3903d GV |
3213 | int res = pfn_recv (SOCK_HANDLE (fd), buffer, count, 0); |
3214 | if (res == SOCKET_ERROR) | |
480b0c5b GV |
3215 | { |
3216 | DebPrint(("sys_read.recv failed with error %d on socket %ld\n", | |
3217 | pfn_WSAGetLastError (), SOCK_HANDLE (fd))); | |
76b3903d GV |
3218 | set_errno (); |
3219 | return -1; | |
480b0c5b | 3220 | } |
76b3903d | 3221 | nchars += res; |
480b0c5b GV |
3222 | } |
3223 | } | |
3224 | #endif | |
3225 | } | |
3226 | else | |
f52eb3ef GV |
3227 | { |
3228 | int nread = _read (fd, buffer, count); | |
3229 | if (nread >= 0) | |
3230 | nchars += nread; | |
3231 | else if (nchars == 0) | |
3232 | nchars = nread; | |
3233 | } | |
76b3903d | 3234 | |
f52eb3ef GV |
3235 | if (nchars <= 0) |
3236 | fd_info[fd].flags |= FILE_AT_EOF; | |
76b3903d | 3237 | /* Perform text mode translation if required. */ |
f52eb3ef | 3238 | else if ((fd_info[fd].flags & FILE_BINARY) == 0) |
76b3903d GV |
3239 | { |
3240 | nchars = crlf_to_lf (nchars, orig_buffer); | |
3241 | /* If buffer contains only CR, return that. To be absolutely | |
3242 | sure we should attempt to read the next char, but in | |
3243 | practice a CR to be followed by LF would not appear by | |
3244 | itself in the buffer. */ | |
3245 | if (nchars > 1 && orig_buffer[nchars - 1] == 0x0d) | |
3246 | { | |
3247 | fd_info[fd].flags |= FILE_LAST_CR; | |
3248 | nchars--; | |
3249 | } | |
76b3903d | 3250 | } |
480b0c5b GV |
3251 | } |
3252 | else | |
3253 | nchars = _read (fd, buffer, count); | |
3254 | ||
76b3903d | 3255 | return nchars; |
480b0c5b GV |
3256 | } |
3257 | ||
3258 | /* For now, don't bother with a non-blocking mode */ | |
3259 | int | |
3260 | sys_write (int fd, const void * buffer, unsigned int count) | |
3261 | { | |
3262 | int nchars; | |
3263 | ||
3264 | if (fd < 0 || fd >= MAXDESC) | |
3265 | { | |
3266 | errno = EBADF; | |
3267 | return -1; | |
3268 | } | |
3269 | ||
3270 | if (fd_info[fd].flags & (FILE_PIPE | FILE_SOCKET)) | |
76b3903d GV |
3271 | { |
3272 | if ((fd_info[fd].flags & FILE_WRITE) == 0) | |
3273 | { | |
3274 | errno = EBADF; | |
3275 | return -1; | |
3276 | } | |
3277 | ||
3278 | /* Perform text mode translation if required. */ | |
3279 | if ((fd_info[fd].flags & FILE_BINARY) == 0) | |
3280 | { | |
3281 | char * tmpbuf = alloca (count * 2); | |
3282 | unsigned char * src = (void *)buffer; | |
3283 | unsigned char * dst = tmpbuf; | |
3284 | int nbytes = count; | |
3285 | ||
3286 | while (1) | |
3287 | { | |
3288 | unsigned char *next; | |
3289 | /* copy next line or remaining bytes */ | |
3290 | next = _memccpy (dst, src, '\n', nbytes); | |
3291 | if (next) | |
3292 | { | |
3293 | /* copied one line ending with '\n' */ | |
3294 | int copied = next - dst; | |
3295 | nbytes -= copied; | |
3296 | src += copied; | |
3297 | /* insert '\r' before '\n' */ | |
3298 | next[-1] = '\r'; | |
3299 | next[0] = '\n'; | |
3300 | dst = next + 1; | |
3301 | count++; | |
3302 | } | |
3303 | else | |
3304 | /* copied remaining partial line -> now finished */ | |
3305 | break; | |
3306 | } | |
3307 | buffer = tmpbuf; | |
3308 | } | |
3309 | } | |
3310 | ||
480b0c5b GV |
3311 | #ifdef HAVE_SOCKETS |
3312 | if (fd_info[fd].flags & FILE_SOCKET) | |
3313 | { | |
f249a012 | 3314 | if (winsock_lib == NULL) abort (); |
480b0c5b GV |
3315 | nchars = pfn_send (SOCK_HANDLE (fd), buffer, count, 0); |
3316 | if (nchars == SOCKET_ERROR) | |
3317 | { | |
3318 | DebPrint(("sys_read.send failed with error %d on socket %ld\n", | |
3319 | pfn_WSAGetLastError (), SOCK_HANDLE (fd))); | |
3320 | set_errno (); | |
3321 | } | |
3322 | } | |
3323 | else | |
3324 | #endif | |
3325 | nchars = _write (fd, buffer, count); | |
3326 | ||
3327 | return nchars; | |
3328 | } | |
3329 | ||
f52eb3ef GV |
3330 | static void |
3331 | check_windows_init_file () | |
3332 | { | |
3333 | extern int noninteractive, inhibit_window_system; | |
3334 | ||
3335 | /* A common indication that Emacs is not installed properly is when | |
3336 | it cannot find the Windows installation file. If this file does | |
3337 | not exist in the expected place, tell the user. */ | |
3338 | ||
d54abccd GV |
3339 | if (!noninteractive && !inhibit_window_system) |
3340 | { | |
3341 | extern Lisp_Object Vwindow_system, Vload_path, Qfile_exists_p; | |
a0b9c838 | 3342 | Lisp_Object objs[2]; |
96ef7d42 | 3343 | Lisp_Object full_load_path; |
d54abccd GV |
3344 | Lisp_Object init_file; |
3345 | int fd; | |
f52eb3ef | 3346 | |
a0b9c838 GV |
3347 | objs[0] = Vload_path; |
3348 | objs[1] = decode_env_path (0, (getenv ("EMACSLOADPATH"))); | |
3349 | full_load_path = Fappend (2, objs); | |
d54abccd | 3350 | init_file = build_string ("term/w32-win"); |
c0ec53ad | 3351 | fd = openp (full_load_path, init_file, Vload_suffixes, NULL, 0); |
d54abccd GV |
3352 | if (fd < 0) |
3353 | { | |
96ef7d42 | 3354 | Lisp_Object load_path_print = Fprin1_to_string (full_load_path, Qnil); |
d54abccd GV |
3355 | char *init_file_name = XSTRING (init_file)->data; |
3356 | char *load_path = XSTRING (load_path_print)->data; | |
3357 | char *buffer = alloca (1024); | |
3358 | ||
3359 | sprintf (buffer, | |
3360 | "The Emacs Windows initialization file \"%s.el\" " | |
3361 | "could not be found in your Emacs installation. " | |
3362 | "Emacs checked the following directories for this file:\n" | |
3363 | "\n%s\n\n" | |
3364 | "When Emacs cannot find this file, it usually means that it " | |
3365 | "was not installed properly, or its distribution file was " | |
3366 | "not unpacked properly.\nSee the README.W32 file in the " | |
3367 | "top-level Emacs directory for more information.", | |
3368 | init_file_name, load_path); | |
3369 | MessageBox (NULL, | |
3370 | buffer, | |
3371 | "Emacs Abort Dialog", | |
3372 | MB_OK | MB_ICONEXCLAMATION | MB_TASKMODAL); | |
f52eb3ef GV |
3373 | /* Use the low-level Emacs abort. */ |
3374 | #undef abort | |
d54abccd GV |
3375 | abort (); |
3376 | } | |
3377 | else | |
3378 | { | |
a302c7ae | 3379 | _close (fd); |
d54abccd | 3380 | } |
f52eb3ef | 3381 | } |
f52eb3ef | 3382 | } |
480b0c5b GV |
3383 | |
3384 | void | |
3385 | term_ntproc () | |
3386 | { | |
3387 | #ifdef HAVE_SOCKETS | |
3388 | /* shutdown the socket interface if necessary */ | |
3389 | term_winsock (); | |
3390 | #endif | |
3391 | } | |
3392 | ||
3393 | void | |
3394 | init_ntproc () | |
3395 | { | |
3396 | #ifdef HAVE_SOCKETS | |
f249a012 RS |
3397 | /* Initialise the socket interface now if available and requested by |
3398 | the user by defining PRELOAD_WINSOCK; otherwise loading will be | |
fbd6baed | 3399 | delayed until open-network-stream is called (w32-has-winsock can |
f249a012 RS |
3400 | also be used to dynamically load or reload winsock). |
3401 | ||
3402 | Conveniently, init_environment is called before us, so | |
3403 | PRELOAD_WINSOCK can be set in the registry. */ | |
3404 | ||
3405 | /* Always initialize this correctly. */ | |
3406 | winsock_lib = NULL; | |
3407 | ||
3408 | if (getenv ("PRELOAD_WINSOCK") != NULL) | |
3409 | init_winsock (TRUE); | |
480b0c5b GV |
3410 | #endif |
3411 | ||
3412 | /* Initial preparation for subprocess support: replace our standard | |
3413 | handles with non-inheritable versions. */ | |
3414 | { | |
3415 | HANDLE parent; | |
3416 | HANDLE stdin_save = INVALID_HANDLE_VALUE; | |
3417 | HANDLE stdout_save = INVALID_HANDLE_VALUE; | |
3418 | HANDLE stderr_save = INVALID_HANDLE_VALUE; | |
3419 | ||
3420 | parent = GetCurrentProcess (); | |
3421 | ||
3422 | /* ignore errors when duplicating and closing; typically the | |
3423 | handles will be invalid when running as a gui program. */ | |
3424 | DuplicateHandle (parent, | |
3425 | GetStdHandle (STD_INPUT_HANDLE), | |
3426 | parent, | |
3427 | &stdin_save, | |
3428 | 0, | |
3429 | FALSE, | |
3430 | DUPLICATE_SAME_ACCESS); | |
3431 | ||
3432 | DuplicateHandle (parent, | |
3433 | GetStdHandle (STD_OUTPUT_HANDLE), | |
3434 | parent, | |
3435 | &stdout_save, | |
3436 | 0, | |
3437 | FALSE, | |
3438 | DUPLICATE_SAME_ACCESS); | |
3439 | ||
3440 | DuplicateHandle (parent, | |
3441 | GetStdHandle (STD_ERROR_HANDLE), | |
3442 | parent, | |
3443 | &stderr_save, | |
3444 | 0, | |
3445 | FALSE, | |
3446 | DUPLICATE_SAME_ACCESS); | |
3447 | ||
3448 | fclose (stdin); | |
3449 | fclose (stdout); | |
3450 | fclose (stderr); | |
3451 | ||
3452 | if (stdin_save != INVALID_HANDLE_VALUE) | |
3453 | _open_osfhandle ((long) stdin_save, O_TEXT); | |
3454 | else | |
76b3903d GV |
3455 | _open ("nul", O_TEXT | O_NOINHERIT | O_RDONLY); |
3456 | _fdopen (0, "r"); | |
480b0c5b GV |
3457 | |
3458 | if (stdout_save != INVALID_HANDLE_VALUE) | |
3459 | _open_osfhandle ((long) stdout_save, O_TEXT); | |
3460 | else | |
76b3903d GV |
3461 | _open ("nul", O_TEXT | O_NOINHERIT | O_WRONLY); |
3462 | _fdopen (1, "w"); | |
480b0c5b GV |
3463 | |
3464 | if (stderr_save != INVALID_HANDLE_VALUE) | |
3465 | _open_osfhandle ((long) stderr_save, O_TEXT); | |
3466 | else | |
76b3903d GV |
3467 | _open ("nul", O_TEXT | O_NOINHERIT | O_WRONLY); |
3468 | _fdopen (2, "w"); | |
480b0c5b GV |
3469 | } |
3470 | ||
3471 | /* unfortunately, atexit depends on implementation of malloc */ | |
3472 | /* atexit (term_ntproc); */ | |
3473 | signal (SIGABRT, term_ntproc); | |
76b3903d GV |
3474 | |
3475 | /* determine which drives are fixed, for GetCachedVolumeInformation */ | |
3476 | { | |
3477 | /* GetDriveType must have trailing backslash. */ | |
3478 | char drive[] = "A:\\"; | |
3479 | ||
3480 | /* Loop over all possible drive letters */ | |
3481 | while (*drive <= 'Z') | |
3482 | { | |
3483 | /* Record if this drive letter refers to a fixed drive. */ | |
3484 | fixed_drives[DRIVE_INDEX (*drive)] = | |
3485 | (GetDriveType (drive) == DRIVE_FIXED); | |
3486 | ||
3487 | (*drive)++; | |
3488 | } | |
a302c7ae AI |
3489 | |
3490 | /* Reset the volume info cache. */ | |
3491 | volume_cache = NULL; | |
76b3903d | 3492 | } |
d54abccd GV |
3493 | |
3494 | /* Check to see if Emacs has been installed correctly. */ | |
3495 | check_windows_init_file (); | |
480b0c5b GV |
3496 | } |
3497 | ||
3498 | /* end of nt.c */ |