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 */ | |
38 | #include "config.h" | |
39 | #undef access | |
40 | #undef chdir | |
41 | #undef chmod | |
42 | #undef creat | |
43 | #undef ctime | |
44 | #undef fopen | |
45 | #undef link | |
46 | #undef mkdir | |
47 | #undef mktemp | |
48 | #undef open | |
49 | #undef rename | |
50 | #undef rmdir | |
51 | #undef unlink | |
52 | ||
53 | #undef close | |
54 | #undef dup | |
55 | #undef dup2 | |
56 | #undef pipe | |
57 | #undef read | |
58 | #undef write | |
95ed0025 | 59 | |
d8fcc1b9 AI |
60 | #undef strerror |
61 | ||
95ed0025 | 62 | #include "lisp.h" |
95ed0025 RS |
63 | |
64 | #include <pwd.h> | |
65 | ||
971bce75 AI |
66 | #ifdef __GNUC__ |
67 | #define _ANONYMOUS_UNION | |
68 | #define _ANONYMOUS_STRUCT | |
69 | #endif | |
480b0c5b | 70 | #include <windows.h> |
00b3b7b3 | 71 | |
480b0c5b GV |
72 | #ifdef HAVE_SOCKETS /* TCP connection support, if kernel can do it */ |
73 | #include <sys/socket.h> | |
74 | #undef socket | |
75 | #undef bind | |
76 | #undef connect | |
77 | #undef htons | |
78 | #undef ntohs | |
79 | #undef inet_addr | |
80 | #undef gethostname | |
81 | #undef gethostbyname | |
82 | #undef getservbyname | |
380961a6 | 83 | #undef shutdown |
480b0c5b | 84 | #endif |
00b3b7b3 | 85 | |
489f9371 | 86 | #include "w32.h" |
480b0c5b | 87 | #include "ndir.h" |
489f9371 | 88 | #include "w32heap.h" |
253574a6 JR |
89 | #include "systime.h" |
90 | ||
76b3903d GV |
91 | extern Lisp_Object Vw32_downcase_file_names; |
92 | extern Lisp_Object Vw32_generate_fake_inodes; | |
93 | extern Lisp_Object Vw32_get_true_file_attributes; | |
20af4831 | 94 | extern Lisp_Object Vw32_num_mouse_buttons; |
76b3903d | 95 | |
18e070ac AI |
96 | \f |
97 | /* Equivalent of strerror for W32 error codes. */ | |
98 | char * | |
99 | w32_strerror (int error_no) | |
100 | { | |
101 | static char buf[500]; | |
102 | ||
103 | if (error_no == 0) | |
104 | error_no = GetLastError (); | |
105 | ||
106 | buf[0] = '\0'; | |
107 | if (!FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM, NULL, | |
108 | error_no, | |
109 | 0, /* choose most suitable language */ | |
110 | buf, sizeof (buf), NULL)) | |
111 | sprintf (buf, "w32 error %u", error_no); | |
112 | return buf; | |
113 | } | |
114 | ||
76b3903d | 115 | static char startup_dir[MAXPATHLEN]; |
00b3b7b3 | 116 | |
95ed0025 | 117 | /* Get the current working directory. */ |
480b0c5b | 118 | char * |
95ed0025 RS |
119 | getwd (char *dir) |
120 | { | |
76b3903d | 121 | #if 0 |
480b0c5b GV |
122 | if (GetCurrentDirectory (MAXPATHLEN, dir) > 0) |
123 | return dir; | |
124 | return NULL; | |
76b3903d GV |
125 | #else |
126 | /* Emacs doesn't actually change directory itself, and we want to | |
127 | force our real wd to be where emacs.exe is to avoid unnecessary | |
128 | conflicts when trying to rename or delete directories. */ | |
129 | strcpy (dir, startup_dir); | |
130 | return dir; | |
131 | #endif | |
95ed0025 RS |
132 | } |
133 | ||
480b0c5b | 134 | #ifndef HAVE_SOCKETS |
95ed0025 RS |
135 | /* Emulate gethostname. */ |
136 | int | |
137 | gethostname (char *buffer, int size) | |
138 | { | |
139 | /* NT only allows small host names, so the buffer is | |
140 | certainly large enough. */ | |
141 | return !GetComputerName (buffer, &size); | |
142 | } | |
480b0c5b | 143 | #endif /* HAVE_SOCKETS */ |
95ed0025 RS |
144 | |
145 | /* Emulate getloadavg. */ | |
146 | int | |
147 | getloadavg (double loadavg[], int nelem) | |
148 | { | |
149 | int i; | |
150 | ||
151 | /* A faithful emulation is going to have to be saved for a rainy day. */ | |
152 | for (i = 0; i < nelem; i++) | |
153 | { | |
154 | loadavg[i] = 0.0; | |
155 | } | |
156 | return i; | |
157 | } | |
158 | ||
480b0c5b | 159 | /* Emulate getpwuid, getpwnam and others. */ |
95ed0025 | 160 | |
051fe60d GV |
161 | #define PASSWD_FIELD_SIZE 256 |
162 | ||
163 | static char the_passwd_name[PASSWD_FIELD_SIZE]; | |
164 | static char the_passwd_passwd[PASSWD_FIELD_SIZE]; | |
165 | static char the_passwd_gecos[PASSWD_FIELD_SIZE]; | |
166 | static char the_passwd_dir[PASSWD_FIELD_SIZE]; | |
167 | static char the_passwd_shell[PASSWD_FIELD_SIZE]; | |
95ed0025 RS |
168 | |
169 | static struct passwd the_passwd = | |
170 | { | |
171 | the_passwd_name, | |
172 | the_passwd_passwd, | |
173 | 0, | |
174 | 0, | |
175 | 0, | |
176 | the_passwd_gecos, | |
177 | the_passwd_dir, | |
178 | the_passwd_shell, | |
179 | }; | |
180 | ||
480b0c5b GV |
181 | int |
182 | getuid () | |
183 | { | |
184 | return the_passwd.pw_uid; | |
185 | } | |
186 | ||
187 | int | |
188 | geteuid () | |
189 | { | |
190 | /* I could imagine arguing for checking to see whether the user is | |
191 | in the Administrators group and returning a UID of 0 for that | |
192 | case, but I don't know how wise that would be in the long run. */ | |
193 | return getuid (); | |
194 | } | |
195 | ||
196 | int | |
197 | getgid () | |
198 | { | |
199 | return the_passwd.pw_gid; | |
200 | } | |
201 | ||
202 | int | |
203 | getegid () | |
204 | { | |
205 | return getgid (); | |
206 | } | |
207 | ||
95ed0025 RS |
208 | struct passwd * |
209 | getpwuid (int uid) | |
210 | { | |
480b0c5b GV |
211 | if (uid == the_passwd.pw_uid) |
212 | return &the_passwd; | |
213 | return NULL; | |
95ed0025 RS |
214 | } |
215 | ||
216 | struct passwd * | |
217 | getpwnam (char *name) | |
218 | { | |
219 | struct passwd *pw; | |
220 | ||
221 | pw = getpwuid (getuid ()); | |
222 | if (!pw) | |
223 | return pw; | |
224 | ||
480b0c5b | 225 | if (stricmp (name, pw->pw_name)) |
95ed0025 RS |
226 | return NULL; |
227 | ||
228 | return pw; | |
229 | } | |
230 | ||
480b0c5b GV |
231 | void |
232 | init_user_info () | |
95ed0025 | 233 | { |
480b0c5b GV |
234 | /* Find the user's real name by opening the process token and |
235 | looking up the name associated with the user-sid in that token. | |
236 | ||
237 | Use the relative portion of the identifier authority value from | |
238 | the user-sid as the user id value (same for group id using the | |
239 | primary group sid from the process token). */ | |
240 | ||
241 | char user_sid[256], name[256], domain[256]; | |
242 | DWORD length = sizeof (name), dlength = sizeof (domain), trash; | |
243 | HANDLE token = NULL; | |
244 | SID_NAME_USE user_type; | |
245 | ||
246 | if (OpenProcessToken (GetCurrentProcess (), TOKEN_QUERY, &token) | |
247 | && GetTokenInformation (token, TokenUser, | |
248 | (PVOID) user_sid, sizeof (user_sid), &trash) | |
249 | && LookupAccountSid (NULL, *((PSID *) user_sid), name, &length, | |
250 | domain, &dlength, &user_type)) | |
d1c1c3d2 | 251 | { |
480b0c5b GV |
252 | strcpy (the_passwd.pw_name, name); |
253 | /* Determine a reasonable uid value. */ | |
254 | if (stricmp ("administrator", name) == 0) | |
255 | { | |
256 | the_passwd.pw_uid = 0; | |
257 | the_passwd.pw_gid = 0; | |
258 | } | |
259 | else | |
260 | { | |
261 | SID_IDENTIFIER_AUTHORITY * pSIA; | |
262 | ||
263 | pSIA = GetSidIdentifierAuthority (*((PSID *) user_sid)); | |
264 | /* I believe the relative portion is the last 4 bytes (of 6) | |
265 | with msb first. */ | |
266 | the_passwd.pw_uid = ((pSIA->Value[2] << 24) + | |
267 | (pSIA->Value[3] << 16) + | |
268 | (pSIA->Value[4] << 8) + | |
269 | (pSIA->Value[5] << 0)); | |
270 | /* restrict to conventional uid range for normal users */ | |
271 | the_passwd.pw_uid = the_passwd.pw_uid % 60001; | |
272 | ||
273 | /* Get group id */ | |
274 | if (GetTokenInformation (token, TokenPrimaryGroup, | |
275 | (PVOID) user_sid, sizeof (user_sid), &trash)) | |
276 | { | |
277 | SID_IDENTIFIER_AUTHORITY * pSIA; | |
278 | ||
279 | pSIA = GetSidIdentifierAuthority (*((PSID *) user_sid)); | |
280 | the_passwd.pw_gid = ((pSIA->Value[2] << 24) + | |
281 | (pSIA->Value[3] << 16) + | |
282 | (pSIA->Value[4] << 8) + | |
283 | (pSIA->Value[5] << 0)); | |
284 | /* I don't know if this is necessary, but for safety... */ | |
285 | the_passwd.pw_gid = the_passwd.pw_gid % 60001; | |
286 | } | |
287 | else | |
288 | the_passwd.pw_gid = the_passwd.pw_uid; | |
289 | } | |
290 | } | |
291 | /* If security calls are not supported (presumably because we | |
292 | are running under Windows 95), fallback to this. */ | |
293 | else if (GetUserName (name, &length)) | |
294 | { | |
295 | strcpy (the_passwd.pw_name, name); | |
296 | if (stricmp ("administrator", name) == 0) | |
297 | the_passwd.pw_uid = 0; | |
298 | else | |
299 | the_passwd.pw_uid = 123; | |
300 | the_passwd.pw_gid = the_passwd.pw_uid; | |
301 | } | |
302 | else | |
303 | { | |
304 | strcpy (the_passwd.pw_name, "unknown"); | |
305 | the_passwd.pw_uid = 123; | |
306 | the_passwd.pw_gid = 123; | |
d1c1c3d2 | 307 | } |
95ed0025 | 308 | |
480b0c5b GV |
309 | /* Ensure HOME and SHELL are defined. */ |
310 | if (getenv ("HOME") == NULL) | |
ca149beb | 311 | abort (); |
480b0c5b | 312 | if (getenv ("SHELL") == NULL) |
ca149beb | 313 | abort (); |
95ed0025 | 314 | |
480b0c5b GV |
315 | /* Set dir and shell from environment variables. */ |
316 | strcpy (the_passwd.pw_dir, getenv ("HOME")); | |
317 | strcpy (the_passwd.pw_shell, getenv ("SHELL")); | |
bd4a449f | 318 | |
480b0c5b GV |
319 | if (token) |
320 | CloseHandle (token); | |
95ed0025 RS |
321 | } |
322 | ||
95ed0025 | 323 | int |
480b0c5b | 324 | random () |
95ed0025 | 325 | { |
480b0c5b GV |
326 | /* rand () on NT gives us 15 random bits...hack together 30 bits. */ |
327 | return ((rand () << 15) | rand ()); | |
95ed0025 RS |
328 | } |
329 | ||
95ed0025 | 330 | void |
480b0c5b | 331 | srandom (int seed) |
95ed0025 | 332 | { |
480b0c5b | 333 | srand (seed); |
95ed0025 RS |
334 | } |
335 | ||
76b3903d | 336 | |
cbe39279 RS |
337 | /* Normalize filename by converting all path separators to |
338 | the specified separator. Also conditionally convert upper | |
339 | case path name components to lower case. */ | |
340 | ||
341 | static void | |
342 | normalize_filename (fp, path_sep) | |
343 | register char *fp; | |
344 | char path_sep; | |
345 | { | |
346 | char sep; | |
347 | char *elem; | |
348 | ||
5162ffce MB |
349 | /* Always lower-case drive letters a-z, even if the filesystem |
350 | preserves case in filenames. | |
351 | This is so filenames can be compared by string comparison | |
352 | functions that are case-sensitive. Even case-preserving filesystems | |
353 | do not distinguish case in drive letters. */ | |
354 | if (fp[1] == ':' && *fp >= 'A' && *fp <= 'Z') | |
355 | { | |
356 | *fp += 'a' - 'A'; | |
357 | fp += 2; | |
358 | } | |
359 | ||
fbd6baed | 360 | if (NILP (Vw32_downcase_file_names)) |
cbe39279 RS |
361 | { |
362 | while (*fp) | |
363 | { | |
364 | if (*fp == '/' || *fp == '\\') | |
365 | *fp = path_sep; | |
366 | fp++; | |
367 | } | |
368 | return; | |
369 | } | |
370 | ||
371 | sep = path_sep; /* convert to this path separator */ | |
372 | elem = fp; /* start of current path element */ | |
373 | ||
374 | do { | |
375 | if (*fp >= 'a' && *fp <= 'z') | |
376 | elem = 0; /* don't convert this element */ | |
377 | ||
378 | if (*fp == 0 || *fp == ':') | |
379 | { | |
380 | sep = *fp; /* restore current separator (or 0) */ | |
381 | *fp = '/'; /* after conversion of this element */ | |
382 | } | |
383 | ||
384 | if (*fp == '/' || *fp == '\\') | |
385 | { | |
386 | if (elem && elem != fp) | |
387 | { | |
388 | *fp = 0; /* temporary end of string */ | |
389 | _strlwr (elem); /* while we convert to lower case */ | |
390 | } | |
391 | *fp = sep; /* convert (or restore) path separator */ | |
392 | elem = fp + 1; /* next element starts after separator */ | |
393 | sep = path_sep; | |
394 | } | |
395 | } while (*fp++); | |
396 | } | |
397 | ||
480b0c5b | 398 | /* Destructively turn backslashes into slashes. */ |
95ed0025 | 399 | void |
480b0c5b GV |
400 | dostounix_filename (p) |
401 | register char *p; | |
95ed0025 | 402 | { |
cbe39279 | 403 | normalize_filename (p, '/'); |
95ed0025 RS |
404 | } |
405 | ||
480b0c5b | 406 | /* Destructively turn slashes into backslashes. */ |
95ed0025 | 407 | void |
480b0c5b GV |
408 | unixtodos_filename (p) |
409 | register char *p; | |
95ed0025 | 410 | { |
cbe39279 | 411 | normalize_filename (p, '\\'); |
95ed0025 RS |
412 | } |
413 | ||
480b0c5b GV |
414 | /* Remove all CR's that are followed by a LF. |
415 | (From msdos.c...probably should figure out a way to share it, | |
416 | although this code isn't going to ever change.) */ | |
35f0d482 | 417 | int |
480b0c5b GV |
418 | crlf_to_lf (n, buf) |
419 | register int n; | |
420 | register unsigned char *buf; | |
35f0d482 | 421 | { |
480b0c5b GV |
422 | unsigned char *np = buf; |
423 | unsigned char *startp = buf; | |
424 | unsigned char *endp = buf + n; | |
35f0d482 | 425 | |
480b0c5b GV |
426 | if (n == 0) |
427 | return n; | |
428 | while (buf < endp - 1) | |
95ed0025 | 429 | { |
480b0c5b GV |
430 | if (*buf == 0x0d) |
431 | { | |
432 | if (*(++buf) != 0x0a) | |
433 | *np++ = 0x0d; | |
434 | } | |
435 | else | |
436 | *np++ = *buf++; | |
95ed0025 | 437 | } |
480b0c5b GV |
438 | if (buf < endp) |
439 | *np++ = *buf++; | |
440 | return np - startp; | |
95ed0025 RS |
441 | } |
442 | ||
76b3903d GV |
443 | /* Parse the root part of file name, if present. Return length and |
444 | optionally store pointer to char after root. */ | |
445 | static int | |
446 | parse_root (char * name, char ** pPath) | |
447 | { | |
448 | char * start = name; | |
449 | ||
450 | if (name == NULL) | |
451 | return 0; | |
452 | ||
453 | /* find the root name of the volume if given */ | |
454 | if (isalpha (name[0]) && name[1] == ':') | |
455 | { | |
456 | /* skip past drive specifier */ | |
457 | name += 2; | |
458 | if (IS_DIRECTORY_SEP (name[0])) | |
459 | name++; | |
460 | } | |
461 | else if (IS_DIRECTORY_SEP (name[0]) && IS_DIRECTORY_SEP (name[1])) | |
462 | { | |
463 | int slashes = 2; | |
464 | name += 2; | |
465 | do | |
466 | { | |
467 | if (IS_DIRECTORY_SEP (*name) && --slashes == 0) | |
468 | break; | |
469 | name++; | |
470 | } | |
471 | while ( *name ); | |
472 | if (IS_DIRECTORY_SEP (name[0])) | |
473 | name++; | |
474 | } | |
475 | ||
476 | if (pPath) | |
477 | *pPath = name; | |
478 | ||
479 | return name - start; | |
480 | } | |
481 | ||
482 | /* Get long base name for name; name is assumed to be absolute. */ | |
483 | static int | |
484 | get_long_basename (char * name, char * buf, int size) | |
485 | { | |
486 | WIN32_FIND_DATA find_data; | |
487 | HANDLE dir_handle; | |
488 | int len = 0; | |
489 | ||
9ab8560d | 490 | /* must be valid filename, no wild cards or other invalid characters */ |
bb1584c8 RS |
491 | if (strpbrk (name, "*?|<>\"")) |
492 | return 0; | |
493 | ||
76b3903d GV |
494 | dir_handle = FindFirstFile (name, &find_data); |
495 | if (dir_handle != INVALID_HANDLE_VALUE) | |
496 | { | |
497 | if ((len = strlen (find_data.cFileName)) < size) | |
498 | memcpy (buf, find_data.cFileName, len + 1); | |
499 | else | |
500 | len = 0; | |
501 | FindClose (dir_handle); | |
502 | } | |
503 | return len; | |
504 | } | |
505 | ||
506 | /* Get long name for file, if possible (assumed to be absolute). */ | |
507 | BOOL | |
508 | w32_get_long_filename (char * name, char * buf, int size) | |
509 | { | |
510 | char * o = buf; | |
511 | char * p; | |
512 | char * q; | |
513 | char full[ MAX_PATH ]; | |
514 | int len; | |
515 | ||
516 | len = strlen (name); | |
517 | if (len >= MAX_PATH) | |
518 | return FALSE; | |
519 | ||
520 | /* Use local copy for destructive modification. */ | |
521 | memcpy (full, name, len+1); | |
522 | unixtodos_filename (full); | |
523 | ||
524 | /* Copy root part verbatim. */ | |
525 | len = parse_root (full, &p); | |
526 | memcpy (o, full, len); | |
527 | o += len; | |
4f8ac0b2 | 528 | *o = '\0'; |
76b3903d GV |
529 | size -= len; |
530 | ||
4f8ac0b2 | 531 | while (p != NULL && *p) |
76b3903d GV |
532 | { |
533 | q = p; | |
534 | p = strchr (q, '\\'); | |
535 | if (p) *p = '\0'; | |
536 | len = get_long_basename (full, o, size); | |
537 | if (len > 0) | |
538 | { | |
539 | o += len; | |
540 | size -= len; | |
541 | if (p != NULL) | |
542 | { | |
543 | *p++ = '\\'; | |
544 | if (size < 2) | |
545 | return FALSE; | |
546 | *o++ = '\\'; | |
547 | size--; | |
548 | *o = '\0'; | |
549 | } | |
550 | } | |
551 | else | |
552 | return FALSE; | |
553 | } | |
76b3903d GV |
554 | |
555 | return TRUE; | |
556 | } | |
557 | ||
9d3355d1 GV |
558 | int |
559 | is_unc_volume (const char *filename) | |
560 | { | |
561 | const char *ptr = filename; | |
562 | ||
563 | if (!IS_DIRECTORY_SEP (ptr[0]) || !IS_DIRECTORY_SEP (ptr[1]) || !ptr[2]) | |
564 | return 0; | |
565 | ||
566 | if (strpbrk (ptr + 2, "*?|<>\"\\/")) | |
567 | return 0; | |
568 | ||
569 | return 1; | |
570 | } | |
76b3903d | 571 | |
95ed0025 RS |
572 | /* Routines that are no-ops on NT but are defined to get Emacs to compile. */ |
573 | ||
95ed0025 RS |
574 | int |
575 | sigsetmask (int signal_mask) | |
576 | { | |
577 | return 0; | |
578 | } | |
579 | ||
8f900f6e AI |
580 | int |
581 | sigmask (int sig) | |
582 | { | |
583 | return 0; | |
584 | } | |
585 | ||
95ed0025 RS |
586 | int |
587 | sigblock (int sig) | |
588 | { | |
589 | return 0; | |
590 | } | |
591 | ||
8f900f6e AI |
592 | int |
593 | sigunblock (int sig) | |
594 | { | |
595 | return 0; | |
596 | } | |
597 | ||
95ed0025 RS |
598 | int |
599 | setpgrp (int pid, int gid) | |
600 | { | |
601 | return 0; | |
602 | } | |
603 | ||
604 | int | |
605 | alarm (int seconds) | |
606 | { | |
607 | return 0; | |
608 | } | |
609 | ||
c6624584 | 610 | void |
95ed0025 RS |
611 | unrequest_sigio (void) |
612 | { | |
c6624584 | 613 | return; |
95ed0025 RS |
614 | } |
615 | ||
c6624584 | 616 | void |
95ed0025 RS |
617 | request_sigio (void) |
618 | { | |
c6624584 | 619 | return; |
95ed0025 RS |
620 | } |
621 | ||
480b0c5b | 622 | #define REG_ROOT "SOFTWARE\\GNU\\Emacs" |
f332b293 GV |
623 | |
624 | LPBYTE | |
fbd6baed | 625 | w32_get_resource (key, lpdwtype) |
f332b293 GV |
626 | char *key; |
627 | LPDWORD lpdwtype; | |
628 | { | |
629 | LPBYTE lpvalue; | |
630 | HKEY hrootkey = NULL; | |
631 | DWORD cbData; | |
632 | BOOL ok = FALSE; | |
633 | ||
634 | /* Check both the current user and the local machine to see if | |
635 | we have any resources. */ | |
636 | ||
637 | if (RegOpenKeyEx (HKEY_CURRENT_USER, REG_ROOT, 0, KEY_READ, &hrootkey) == ERROR_SUCCESS) | |
638 | { | |
639 | lpvalue = NULL; | |
640 | ||
641 | if (RegQueryValueEx (hrootkey, key, NULL, NULL, NULL, &cbData) == ERROR_SUCCESS | |
642 | && (lpvalue = (LPBYTE) xmalloc (cbData)) != NULL | |
643 | && RegQueryValueEx (hrootkey, key, NULL, lpdwtype, lpvalue, &cbData) == ERROR_SUCCESS) | |
644 | { | |
645 | return (lpvalue); | |
646 | } | |
647 | ||
648 | if (lpvalue) xfree (lpvalue); | |
649 | ||
650 | RegCloseKey (hrootkey); | |
651 | } | |
652 | ||
653 | if (RegOpenKeyEx (HKEY_LOCAL_MACHINE, REG_ROOT, 0, KEY_READ, &hrootkey) == ERROR_SUCCESS) | |
654 | { | |
655 | lpvalue = NULL; | |
656 | ||
76b3903d GV |
657 | if (RegQueryValueEx (hrootkey, key, NULL, NULL, NULL, &cbData) == ERROR_SUCCESS |
658 | && (lpvalue = (LPBYTE) xmalloc (cbData)) != NULL | |
659 | && RegQueryValueEx (hrootkey, key, NULL, lpdwtype, lpvalue, &cbData) == ERROR_SUCCESS) | |
f332b293 GV |
660 | { |
661 | return (lpvalue); | |
662 | } | |
663 | ||
664 | if (lpvalue) xfree (lpvalue); | |
665 | ||
666 | RegCloseKey (hrootkey); | |
667 | } | |
668 | ||
669 | return (NULL); | |
670 | } | |
671 | ||
75b08edb GV |
672 | char *get_emacs_configuration (void); |
673 | extern Lisp_Object Vsystem_configuration; | |
674 | ||
f332b293 | 675 | void |
aa7b87b0 | 676 | init_environment (char ** argv) |
f332b293 | 677 | { |
b3308d2e KH |
678 | static const char * const tempdirs[] = { |
679 | "$TMPDIR", "$TEMP", "$TMP", "c:/" | |
680 | }; | |
681 | int i; | |
682 | const int imax = sizeof (tempdirs) / sizeof (tempdirs[0]); | |
683 | ||
684 | /* Make sure they have a usable $TMPDIR. Many Emacs functions use | |
685 | temporary files and assume "/tmp" if $TMPDIR is unset, which | |
686 | will break on DOS/Windows. Refuse to work if we cannot find | |
687 | a directory, not even "c:/", usable for that purpose. */ | |
688 | for (i = 0; i < imax ; i++) | |
689 | { | |
690 | const char *tmp = tempdirs[i]; | |
691 | ||
692 | if (*tmp == '$') | |
693 | tmp = getenv (tmp + 1); | |
694 | /* Note that `access' can lie to us if the directory resides on a | |
695 | read-only filesystem, like CD-ROM or a write-protected floppy. | |
696 | The only way to be really sure is to actually create a file and | |
697 | see if it succeeds. But I think that's too much to ask. */ | |
a302c7ae | 698 | if (tmp && _access (tmp, D_OK) == 0) |
b3308d2e KH |
699 | { |
700 | char * var = alloca (strlen (tmp) + 8); | |
701 | sprintf (var, "TMPDIR=%s", tmp); | |
aca583b2 | 702 | _putenv (strdup (var)); |
b3308d2e KH |
703 | break; |
704 | } | |
705 | } | |
706 | if (i >= imax) | |
707 | cmd_error_internal | |
708 | (Fcons (Qerror, | |
709 | Fcons (build_string ("no usable temporary directories found!!"), | |
710 | Qnil)), | |
711 | "While setting TMPDIR: "); | |
712 | ||
ca149beb AI |
713 | /* Check for environment variables and use registry settings if they |
714 | don't exist. Fallback on default values where applicable. */ | |
f332b293 | 715 | { |
480b0c5b GV |
716 | int i; |
717 | LPBYTE lpval; | |
718 | DWORD dwType; | |
69fb0241 | 719 | char locale_name[32]; |
f332b293 | 720 | |
ca149beb AI |
721 | static struct env_entry |
722 | { | |
723 | char * name; | |
724 | char * def_value; | |
725 | } env_vars[] = | |
726 | { | |
727 | {"HOME", "C:/"}, | |
728 | {"PRELOAD_WINSOCK", NULL}, | |
729 | {"emacs_dir", "C:/emacs"}, | |
cc14250a | 730 | {"EMACSLOADPATH", "%emacs_dir%/site-lisp;%emacs_dir%/../site-lisp;%emacs_dir%/lisp;%emacs_dir%/leim"}, |
ca149beb AI |
731 | {"SHELL", "%emacs_dir%/bin/cmdproxy.exe"}, |
732 | {"EMACSDATA", "%emacs_dir%/etc"}, | |
733 | {"EMACSPATH", "%emacs_dir%/bin"}, | |
734 | {"EMACSLOCKDIR", "%emacs_dir%/lock"}, | |
76b3903d | 735 | /* We no longer set INFOPATH because Info-default-directory-list |
ca149beb AI |
736 | is then ignored. */ |
737 | /* {"INFOPATH", "%emacs_dir%/info"}, */ | |
738 | {"EMACSDOC", "%emacs_dir%/etc"}, | |
69fb0241 JR |
739 | {"TERM", "cmd"}, |
740 | {"LANG", NULL}, | |
480b0c5b GV |
741 | }; |
742 | ||
69fb0241 JR |
743 | /* Get default locale info and use it for LANG. */ |
744 | if (GetLocaleInfo (LOCALE_USER_DEFAULT, | |
745 | LOCALE_SABBREVLANGNAME | LOCALE_USE_CP_ACP, | |
746 | locale_name, sizeof (locale_name))) | |
747 | { | |
748 | for (i = 0; i < (sizeof (env_vars) / sizeof (env_vars[0])); i++) | |
749 | { | |
750 | if (strcmp (env_vars[i].name, "LANG") == 0) | |
751 | { | |
752 | env_vars[i].def_value = locale_name; | |
753 | break; | |
754 | } | |
755 | } | |
756 | } | |
757 | ||
ca149beb AI |
758 | #define SET_ENV_BUF_SIZE (4 * MAX_PATH) /* to cover EMACSLOADPATH */ |
759 | ||
760 | /* Treat emacs_dir specially: set it unconditionally based on our | |
761 | location, if it appears that we are running from the bin subdir | |
762 | of a standard installation. */ | |
763 | { | |
764 | char *p; | |
765 | char modname[MAX_PATH]; | |
766 | ||
767 | if (!GetModuleFileName (NULL, modname, MAX_PATH)) | |
768 | abort (); | |
769 | if ((p = strrchr (modname, '\\')) == NULL) | |
770 | abort (); | |
771 | *p = 0; | |
772 | ||
773 | if ((p = strrchr (modname, '\\')) && stricmp (p, "\\bin") == 0) | |
774 | { | |
775 | char buf[SET_ENV_BUF_SIZE]; | |
776 | ||
777 | *p = 0; | |
778 | for (p = modname; *p; p++) | |
779 | if (*p == '\\') *p = '/'; | |
780 | ||
781 | _snprintf (buf, sizeof(buf)-1, "emacs_dir=%s", modname); | |
a302c7ae | 782 | _putenv (strdup (buf)); |
ca149beb AI |
783 | } |
784 | } | |
785 | ||
69fb0241 | 786 | for (i = 0; i < (sizeof (env_vars) / sizeof (env_vars[0])); i++) |
f332b293 | 787 | { |
ca149beb | 788 | if (!getenv (env_vars[i].name)) |
480b0c5b | 789 | { |
ca149beb | 790 | int dont_free = 0; |
480b0c5b | 791 | |
ca149beb AI |
792 | if ((lpval = w32_get_resource (env_vars[i].name, &dwType)) == NULL) |
793 | { | |
794 | lpval = env_vars[i].def_value; | |
795 | dwType = REG_EXPAND_SZ; | |
796 | dont_free = 1; | |
480b0c5b | 797 | } |
ca149beb AI |
798 | |
799 | if (lpval) | |
480b0c5b | 800 | { |
ca149beb AI |
801 | if (dwType == REG_EXPAND_SZ) |
802 | { | |
803 | char buf1[SET_ENV_BUF_SIZE], buf2[SET_ENV_BUF_SIZE]; | |
804 | ||
805 | ExpandEnvironmentStrings ((LPSTR) lpval, buf1, sizeof(buf1)); | |
806 | _snprintf (buf2, sizeof(buf2)-1, "%s=%s", env_vars[i].name, buf1); | |
a302c7ae | 807 | _putenv (strdup (buf2)); |
ca149beb AI |
808 | } |
809 | else if (dwType == REG_SZ) | |
810 | { | |
811 | char buf[SET_ENV_BUF_SIZE]; | |
f332b293 | 812 | |
ca149beb | 813 | _snprintf (buf, sizeof(buf)-1, "%s=%s", env_vars[i].name, lpval); |
a302c7ae | 814 | _putenv (strdup (buf)); |
ca149beb | 815 | } |
f332b293 | 816 | |
ca149beb AI |
817 | if (!dont_free) |
818 | xfree (lpval); | |
819 | } | |
480b0c5b GV |
820 | } |
821 | } | |
822 | } | |
823 | ||
75b08edb GV |
824 | /* Rebuild system configuration to reflect invoking system. */ |
825 | Vsystem_configuration = build_string (EMACS_CONFIGURATION); | |
826 | ||
76b3903d GV |
827 | /* Another special case: on NT, the PATH variable is actually named |
828 | "Path" although cmd.exe (perhaps NT itself) arranges for | |
829 | environment variable lookup and setting to be case insensitive. | |
830 | However, Emacs assumes a fully case sensitive environment, so we | |
831 | need to change "Path" to "PATH" to match the expectations of | |
832 | various elisp packages. We do this by the sneaky method of | |
833 | modifying the string in the C runtime environ entry. | |
834 | ||
835 | The same applies to COMSPEC. */ | |
836 | { | |
837 | char ** envp; | |
838 | ||
839 | for (envp = environ; *envp; envp++) | |
840 | if (_strnicmp (*envp, "PATH=", 5) == 0) | |
841 | memcpy (*envp, "PATH=", 5); | |
842 | else if (_strnicmp (*envp, "COMSPEC=", 8) == 0) | |
843 | memcpy (*envp, "COMSPEC=", 8); | |
844 | } | |
845 | ||
846 | /* Remember the initial working directory for getwd, then make the | |
847 | real wd be the location of emacs.exe to avoid conflicts when | |
848 | renaming or deleting directories. (We also don't call chdir when | |
849 | running subprocesses for the same reason.) */ | |
850 | if (!GetCurrentDirectory (MAXPATHLEN, startup_dir)) | |
851 | abort (); | |
852 | ||
853 | { | |
854 | char *p; | |
aa7b87b0 | 855 | static char modname[MAX_PATH]; |
76b3903d GV |
856 | |
857 | if (!GetModuleFileName (NULL, modname, MAX_PATH)) | |
858 | abort (); | |
859 | if ((p = strrchr (modname, '\\')) == NULL) | |
860 | abort (); | |
861 | *p = 0; | |
862 | ||
863 | SetCurrentDirectory (modname); | |
aa7b87b0 AI |
864 | |
865 | /* Ensure argv[0] has the full path to Emacs. */ | |
866 | *p = '\\'; | |
867 | argv[0] = modname; | |
76b3903d GV |
868 | } |
869 | ||
20af4831 JR |
870 | /* Determine if there is a middle mouse button, to allow parse_button |
871 | to decide whether right mouse events should be mouse-2 or | |
872 | mouse-3. */ | |
873 | XSETINT (Vw32_num_mouse_buttons, GetSystemMetrics (SM_CMOUSEBUTTONS)); | |
874 | ||
480b0c5b GV |
875 | init_user_info (); |
876 | } | |
877 | ||
bf794306 EZ |
878 | char * |
879 | emacs_root_dir (void) | |
880 | { | |
881 | static char root_dir[FILENAME_MAX]; | |
882 | const char *p; | |
883 | ||
884 | p = getenv ("emacs_dir"); | |
885 | if (p == NULL) | |
886 | abort (); | |
887 | strcpy (root_dir, p); | |
888 | root_dir[parse_root (root_dir, NULL)] = '\0'; | |
889 | dostounix_filename (root_dir); | |
890 | return root_dir; | |
891 | } | |
892 | ||
480b0c5b GV |
893 | /* We don't have scripts to automatically determine the system configuration |
894 | for Emacs before it's compiled, and we don't want to have to make the | |
895 | user enter it, so we define EMACS_CONFIGURATION to invoke this runtime | |
896 | routine. */ | |
897 | ||
480b0c5b GV |
898 | char * |
899 | get_emacs_configuration (void) | |
900 | { | |
901 | char *arch, *oem, *os; | |
c5247da2 | 902 | int build_num; |
a302c7ae | 903 | static char configuration_buffer[32]; |
480b0c5b GV |
904 | |
905 | /* Determine the processor type. */ | |
906 | switch (get_processor_type ()) | |
907 | { | |
908 | ||
909 | #ifdef PROCESSOR_INTEL_386 | |
910 | case PROCESSOR_INTEL_386: | |
911 | case PROCESSOR_INTEL_486: | |
912 | case PROCESSOR_INTEL_PENTIUM: | |
913 | arch = "i386"; | |
914 | break; | |
915 | #endif | |
916 | ||
917 | #ifdef PROCESSOR_INTEL_860 | |
918 | case PROCESSOR_INTEL_860: | |
919 | arch = "i860"; | |
920 | break; | |
921 | #endif | |
922 | ||
923 | #ifdef PROCESSOR_MIPS_R2000 | |
924 | case PROCESSOR_MIPS_R2000: | |
925 | case PROCESSOR_MIPS_R3000: | |
926 | case PROCESSOR_MIPS_R4000: | |
927 | arch = "mips"; | |
928 | break; | |
929 | #endif | |
930 | ||
931 | #ifdef PROCESSOR_ALPHA_21064 | |
932 | case PROCESSOR_ALPHA_21064: | |
933 | arch = "alpha"; | |
934 | break; | |
935 | #endif | |
936 | ||
937 | default: | |
938 | arch = "unknown"; | |
939 | break; | |
f332b293 | 940 | } |
480b0c5b | 941 | |
a302c7ae AI |
942 | /* Use the OEM field to reflect the compiler/library combination. */ |
943 | #ifdef _MSC_VER | |
944 | #define COMPILER_NAME "msvc" | |
945 | #else | |
946 | #ifdef __GNUC__ | |
947 | #define COMPILER_NAME "mingw" | |
948 | #else | |
949 | #define COMPILER_NAME "unknown" | |
950 | #endif | |
951 | #endif | |
952 | oem = COMPILER_NAME; | |
480b0c5b | 953 | |
c5247da2 GV |
954 | switch (osinfo_cache.dwPlatformId) { |
955 | case VER_PLATFORM_WIN32_NT: | |
956 | os = "nt"; | |
957 | build_num = osinfo_cache.dwBuildNumber; | |
958 | break; | |
959 | case VER_PLATFORM_WIN32_WINDOWS: | |
960 | if (osinfo_cache.dwMinorVersion == 0) { | |
961 | os = "windows95"; | |
962 | } else { | |
963 | os = "windows98"; | |
964 | } | |
965 | build_num = LOWORD (osinfo_cache.dwBuildNumber); | |
966 | break; | |
967 | case VER_PLATFORM_WIN32s: | |
968 | /* Not supported, should not happen. */ | |
969 | os = "windows32s"; | |
970 | build_num = LOWORD (osinfo_cache.dwBuildNumber); | |
971 | break; | |
972 | default: | |
973 | os = "unknown"; | |
974 | build_num = 0; | |
975 | break; | |
976 | } | |
977 | ||
978 | if (osinfo_cache.dwPlatformId == VER_PLATFORM_WIN32_NT) { | |
979 | sprintf (configuration_buffer, "%s-%s-%s%d.%d.%d", arch, oem, os, | |
980 | get_w32_major_version (), get_w32_minor_version (), build_num); | |
981 | } else { | |
982 | sprintf (configuration_buffer, "%s-%s-%s.%d", arch, oem, os, build_num); | |
983 | } | |
480b0c5b | 984 | |
480b0c5b | 985 | return configuration_buffer; |
f332b293 GV |
986 | } |
987 | ||
a302c7ae AI |
988 | char * |
989 | get_emacs_configuration_options (void) | |
990 | { | |
991 | static char options_buffer[256]; | |
992 | ||
993 | /* Work out the effective configure options for this build. */ | |
994 | #ifdef _MSC_VER | |
995 | #define COMPILER_VERSION "--with-msvc (%d.%02d)", _MSC_VER / 100, _MSC_VER % 100 | |
996 | #else | |
997 | #ifdef __GNUC__ | |
998 | #define COMPILER_VERSION "--with-gcc (%d.%d)", __GNUC__, __GNUC_MINOR__ | |
999 | #else | |
1000 | #define COMPILER_VERSION "" | |
1001 | #endif | |
1002 | #endif | |
1003 | ||
1004 | sprintf (options_buffer, COMPILER_VERSION); | |
1005 | #ifdef EMACSDEBUG | |
1006 | strcat (options_buffer, " --no-opt"); | |
1007 | #endif | |
1008 | #ifdef USER_CFLAGS | |
1009 | strcat (options_buffer, " --cflags"); | |
1010 | strcat (options_buffer, USER_CFLAGS); | |
1011 | #endif | |
1012 | #ifdef USER_LDFLAGS | |
1013 | strcat (options_buffer, " --ldflags"); | |
1014 | strcat (options_buffer, USER_LDFLAGS); | |
1015 | #endif | |
1016 | return options_buffer; | |
1017 | } | |
1018 | ||
1019 | ||
35f0d482 KH |
1020 | #include <sys/timeb.h> |
1021 | ||
1022 | /* Emulate gettimeofday (Ulrich Leodolter, 1/11/95). */ | |
1023 | void | |
1024 | gettimeofday (struct timeval *tv, struct timezone *tz) | |
1025 | { | |
a302c7ae | 1026 | struct timeb tb; |
35f0d482 KH |
1027 | _ftime (&tb); |
1028 | ||
1029 | tv->tv_sec = tb.time; | |
1030 | tv->tv_usec = tb.millitm * 1000L; | |
1031 | if (tz) | |
1032 | { | |
1033 | tz->tz_minuteswest = tb.timezone; /* minutes west of Greenwich */ | |
1034 | tz->tz_dsttime = tb.dstflag; /* type of dst correction */ | |
1035 | } | |
1036 | } | |
35f0d482 | 1037 | |
480b0c5b | 1038 | /* ------------------------------------------------------------------------- */ |
fbd6baed | 1039 | /* IO support and wrapper functions for W32 API. */ |
480b0c5b | 1040 | /* ------------------------------------------------------------------------- */ |
95ed0025 | 1041 | |
480b0c5b GV |
1042 | /* Place a wrapper around the MSVC version of ctime. It returns NULL |
1043 | on network directories, so we handle that case here. | |
1044 | (Ulrich Leodolter, 1/11/95). */ | |
1045 | char * | |
1046 | sys_ctime (const time_t *t) | |
1047 | { | |
1048 | char *str = (char *) ctime (t); | |
1049 | return (str ? str : "Sun Jan 01 00:00:00 1970"); | |
1050 | } | |
1051 | ||
1052 | /* Emulate sleep...we could have done this with a define, but that | |
1053 | would necessitate including windows.h in the files that used it. | |
1054 | This is much easier. */ | |
1055 | void | |
1056 | sys_sleep (int seconds) | |
1057 | { | |
1058 | Sleep (seconds * 1000); | |
1059 | } | |
1060 | ||
76b3903d | 1061 | /* Internal MSVC functions for low-level descriptor munging */ |
480b0c5b GV |
1062 | extern int __cdecl _set_osfhnd (int fd, long h); |
1063 | extern int __cdecl _free_osfhnd (int fd); | |
1064 | ||
1065 | /* parallel array of private info on file handles */ | |
1066 | filedesc fd_info [ MAXDESC ]; | |
1067 | ||
76b3903d GV |
1068 | typedef struct volume_info_data { |
1069 | struct volume_info_data * next; | |
1070 | ||
1071 | /* time when info was obtained */ | |
1072 | DWORD timestamp; | |
1073 | ||
1074 | /* actual volume info */ | |
1075 | char * root_dir; | |
480b0c5b GV |
1076 | DWORD serialnum; |
1077 | DWORD maxcomp; | |
1078 | DWORD flags; | |
76b3903d GV |
1079 | char * name; |
1080 | char * type; | |
1081 | } volume_info_data; | |
1082 | ||
1083 | /* Global referenced by various functions. */ | |
1084 | static volume_info_data volume_info; | |
1085 | ||
1086 | /* Vector to indicate which drives are local and fixed (for which cached | |
1087 | data never expires). */ | |
1088 | static BOOL fixed_drives[26]; | |
1089 | ||
1090 | /* Consider cached volume information to be stale if older than 10s, | |
1091 | at least for non-local drives. Info for fixed drives is never stale. */ | |
1092 | #define DRIVE_INDEX( c ) ( (c) <= 'Z' ? (c) - 'A' : (c) - 'a' ) | |
1093 | #define VOLINFO_STILL_VALID( root_dir, info ) \ | |
1094 | ( ( isalpha (root_dir[0]) && \ | |
1095 | fixed_drives[ DRIVE_INDEX (root_dir[0]) ] ) \ | |
1096 | || GetTickCount () - info->timestamp < 10000 ) | |
1097 | ||
1098 | /* Cache support functions. */ | |
1099 | ||
1100 | /* Simple linked list with linear search is sufficient. */ | |
1101 | static volume_info_data *volume_cache = NULL; | |
1102 | ||
1103 | static volume_info_data * | |
1104 | lookup_volume_info (char * root_dir) | |
1105 | { | |
1106 | volume_info_data * info; | |
1107 | ||
1108 | for (info = volume_cache; info; info = info->next) | |
1109 | if (stricmp (info->root_dir, root_dir) == 0) | |
1110 | break; | |
1111 | return info; | |
1112 | } | |
1113 | ||
1114 | static void | |
1115 | add_volume_info (char * root_dir, volume_info_data * info) | |
1116 | { | |
a302c7ae | 1117 | info->root_dir = xstrdup (root_dir); |
76b3903d GV |
1118 | info->next = volume_cache; |
1119 | volume_cache = info; | |
1120 | } | |
1121 | ||
1122 | ||
1123 | /* Wrapper for GetVolumeInformation, which uses caching to avoid | |
1124 | performance penalty (~2ms on 486 for local drives, 7.5ms for local | |
1125 | cdrom drive, ~5-10ms or more for remote drives on LAN). */ | |
1126 | volume_info_data * | |
1127 | GetCachedVolumeInformation (char * root_dir) | |
1128 | { | |
1129 | volume_info_data * info; | |
1130 | char default_root[ MAX_PATH ]; | |
1131 | ||
1132 | /* NULL for root_dir means use root from current directory. */ | |
1133 | if (root_dir == NULL) | |
1134 | { | |
1135 | if (GetCurrentDirectory (MAX_PATH, default_root) == 0) | |
1136 | return NULL; | |
1137 | parse_root (default_root, &root_dir); | |
1138 | *root_dir = 0; | |
1139 | root_dir = default_root; | |
1140 | } | |
1141 | ||
1142 | /* Local fixed drives can be cached permanently. Removable drives | |
1143 | cannot be cached permanently, since the volume name and serial | |
1144 | number (if nothing else) can change. Remote drives should be | |
1145 | treated as if they are removable, since there is no sure way to | |
1146 | tell whether they are or not. Also, the UNC association of drive | |
1147 | letters mapped to remote volumes can be changed at any time (even | |
1148 | by other processes) without notice. | |
1149 | ||
1150 | As a compromise, so we can benefit from caching info for remote | |
1151 | volumes, we use a simple expiry mechanism to invalidate cache | |
1152 | entries that are more than ten seconds old. */ | |
1153 | ||
1154 | #if 0 | |
1155 | /* No point doing this, because WNetGetConnection is even slower than | |
1156 | GetVolumeInformation, consistently taking ~50ms on a 486 (FWIW, | |
1157 | GetDriveType is about the only call of this type which does not | |
1158 | involve network access, and so is extremely quick). */ | |
1159 | ||
1160 | /* Map drive letter to UNC if remote. */ | |
1161 | if ( isalpha( root_dir[0] ) && !fixed[ DRIVE_INDEX( root_dir[0] ) ] ) | |
1162 | { | |
1163 | char remote_name[ 256 ]; | |
1164 | char drive[3] = { root_dir[0], ':' }; | |
1165 | ||
1166 | if (WNetGetConnection (drive, remote_name, sizeof (remote_name)) | |
1167 | == NO_ERROR) | |
1168 | /* do something */ ; | |
1169 | } | |
1170 | #endif | |
1171 | ||
1172 | info = lookup_volume_info (root_dir); | |
1173 | ||
1174 | if (info == NULL || ! VOLINFO_STILL_VALID (root_dir, info)) | |
1175 | { | |
1176 | char name[ 256 ]; | |
1177 | DWORD serialnum; | |
1178 | DWORD maxcomp; | |
1179 | DWORD flags; | |
1180 | char type[ 256 ]; | |
1181 | ||
1182 | /* Info is not cached, or is stale. */ | |
1183 | if (!GetVolumeInformation (root_dir, | |
1184 | name, sizeof (name), | |
1185 | &serialnum, | |
1186 | &maxcomp, | |
1187 | &flags, | |
1188 | type, sizeof (type))) | |
1189 | return NULL; | |
1190 | ||
1191 | /* Cache the volume information for future use, overwriting existing | |
1192 | entry if present. */ | |
1193 | if (info == NULL) | |
1194 | { | |
1195 | info = (volume_info_data *) xmalloc (sizeof (volume_info_data)); | |
1196 | add_volume_info (root_dir, info); | |
1197 | } | |
1198 | else | |
1199 | { | |
a302c7ae AI |
1200 | xfree (info->name); |
1201 | xfree (info->type); | |
76b3903d GV |
1202 | } |
1203 | ||
a302c7ae | 1204 | info->name = xstrdup (name); |
76b3903d GV |
1205 | info->serialnum = serialnum; |
1206 | info->maxcomp = maxcomp; | |
1207 | info->flags = flags; | |
a302c7ae | 1208 | info->type = xstrdup (type); |
76b3903d GV |
1209 | info->timestamp = GetTickCount (); |
1210 | } | |
1211 | ||
1212 | return info; | |
1213 | } | |
480b0c5b GV |
1214 | |
1215 | /* Get information on the volume where name is held; set path pointer to | |
1216 | start of pathname in name (past UNC header\volume header if present). */ | |
1217 | int | |
1218 | get_volume_info (const char * name, const char ** pPath) | |
95ed0025 | 1219 | { |
480b0c5b GV |
1220 | char temp[MAX_PATH]; |
1221 | char *rootname = NULL; /* default to current volume */ | |
76b3903d | 1222 | volume_info_data * info; |
480b0c5b GV |
1223 | |
1224 | if (name == NULL) | |
1225 | return FALSE; | |
1226 | ||
1227 | /* find the root name of the volume if given */ | |
1228 | if (isalpha (name[0]) && name[1] == ':') | |
1229 | { | |
1230 | rootname = temp; | |
1231 | temp[0] = *name++; | |
1232 | temp[1] = *name++; | |
1233 | temp[2] = '\\'; | |
1234 | temp[3] = 0; | |
1235 | } | |
1236 | else if (IS_DIRECTORY_SEP (name[0]) && IS_DIRECTORY_SEP (name[1])) | |
95ed0025 | 1237 | { |
480b0c5b GV |
1238 | char *str = temp; |
1239 | int slashes = 4; | |
1240 | rootname = temp; | |
1241 | do | |
1242 | { | |
1243 | if (IS_DIRECTORY_SEP (*name) && --slashes == 0) | |
1244 | break; | |
1245 | *str++ = *name++; | |
1246 | } | |
1247 | while ( *name ); | |
1248 | ||
480b0c5b GV |
1249 | *str++ = '\\'; |
1250 | *str = 0; | |
95ed0025 | 1251 | } |
480b0c5b GV |
1252 | |
1253 | if (pPath) | |
1254 | *pPath = name; | |
1255 | ||
76b3903d GV |
1256 | info = GetCachedVolumeInformation (rootname); |
1257 | if (info != NULL) | |
95ed0025 | 1258 | { |
76b3903d GV |
1259 | /* Set global referenced by other functions. */ |
1260 | volume_info = *info; | |
480b0c5b | 1261 | return TRUE; |
95ed0025 | 1262 | } |
480b0c5b GV |
1263 | return FALSE; |
1264 | } | |
1265 | ||
1266 | /* Determine if volume is FAT format (ie. only supports short 8.3 | |
1267 | names); also set path pointer to start of pathname in name. */ | |
1268 | int | |
1269 | is_fat_volume (const char * name, const char ** pPath) | |
1270 | { | |
1271 | if (get_volume_info (name, pPath)) | |
1272 | return (volume_info.maxcomp == 12); | |
1273 | return FALSE; | |
1274 | } | |
1275 | ||
1276 | /* Map filename to a legal 8.3 name if necessary. */ | |
1277 | const char * | |
fbd6baed | 1278 | map_w32_filename (const char * name, const char ** pPath) |
480b0c5b GV |
1279 | { |
1280 | static char shortname[MAX_PATH]; | |
1281 | char * str = shortname; | |
1282 | char c; | |
480b0c5b | 1283 | char * path; |
76b3903d | 1284 | const char * save_name = name; |
480b0c5b | 1285 | |
ca149beb AI |
1286 | if (strlen (name) >= MAX_PATH) |
1287 | { | |
1288 | /* Return a filename which will cause callers to fail. */ | |
1289 | strcpy (shortname, "?"); | |
1290 | return shortname; | |
1291 | } | |
1292 | ||
a302c7ae | 1293 | if (is_fat_volume (name, (const char **)&path)) /* truncate to 8.3 */ |
95ed0025 | 1294 | { |
480b0c5b GV |
1295 | register int left = 8; /* maximum number of chars in part */ |
1296 | register int extn = 0; /* extension added? */ | |
1297 | register int dots = 2; /* maximum number of dots allowed */ | |
1298 | ||
1299 | while (name < path) | |
1300 | *str++ = *name++; /* skip past UNC header */ | |
1301 | ||
1302 | while ((c = *name++)) | |
1303 | { | |
1304 | switch ( c ) | |
1305 | { | |
1306 | case '\\': | |
1307 | case '/': | |
1308 | *str++ = '\\'; | |
1309 | extn = 0; /* reset extension flags */ | |
1310 | dots = 2; /* max 2 dots */ | |
1311 | left = 8; /* max length 8 for main part */ | |
1312 | break; | |
1313 | case ':': | |
1314 | *str++ = ':'; | |
1315 | extn = 0; /* reset extension flags */ | |
1316 | dots = 2; /* max 2 dots */ | |
1317 | left = 8; /* max length 8 for main part */ | |
1318 | break; | |
1319 | case '.': | |
1320 | if ( dots ) | |
1321 | { | |
1322 | /* Convert path components of the form .xxx to _xxx, | |
1323 | but leave . and .. as they are. This allows .emacs | |
1324 | to be read as _emacs, for example. */ | |
1325 | ||
1326 | if (! *name || | |
1327 | *name == '.' || | |
1328 | IS_DIRECTORY_SEP (*name)) | |
1329 | { | |
1330 | *str++ = '.'; | |
1331 | dots--; | |
1332 | } | |
1333 | else | |
1334 | { | |
1335 | *str++ = '_'; | |
1336 | left--; | |
1337 | dots = 0; | |
1338 | } | |
1339 | } | |
1340 | else if ( !extn ) | |
1341 | { | |
1342 | *str++ = '.'; | |
1343 | extn = 1; /* we've got an extension */ | |
1344 | left = 3; /* 3 chars in extension */ | |
1345 | } | |
1346 | else | |
1347 | { | |
1348 | /* any embedded dots after the first are converted to _ */ | |
1349 | *str++ = '_'; | |
1350 | } | |
1351 | break; | |
1352 | case '~': | |
1353 | case '#': /* don't lose these, they're important */ | |
1354 | if ( ! left ) | |
1355 | str[-1] = c; /* replace last character of part */ | |
1356 | /* FALLTHRU */ | |
1357 | default: | |
1358 | if ( left ) | |
1359 | { | |
1360 | *str++ = tolower (c); /* map to lower case (looks nicer) */ | |
1361 | left--; | |
1362 | dots = 0; /* started a path component */ | |
1363 | } | |
1364 | break; | |
1365 | } | |
1366 | } | |
1367 | *str = '\0'; | |
fc85cb29 RS |
1368 | } |
1369 | else | |
1370 | { | |
1371 | strcpy (shortname, name); | |
1372 | unixtodos_filename (shortname); | |
95ed0025 | 1373 | } |
480b0c5b GV |
1374 | |
1375 | if (pPath) | |
76b3903d | 1376 | *pPath = shortname + (path - save_name); |
480b0c5b | 1377 | |
fc85cb29 | 1378 | return shortname; |
480b0c5b GV |
1379 | } |
1380 | ||
b3308d2e KH |
1381 | static int |
1382 | is_exec (const char * name) | |
1383 | { | |
1384 | char * p = strrchr (name, '.'); | |
1385 | return | |
1386 | (p != NULL | |
1387 | && (stricmp (p, ".exe") == 0 || | |
1388 | stricmp (p, ".com") == 0 || | |
1389 | stricmp (p, ".bat") == 0 || | |
1390 | stricmp (p, ".cmd") == 0)); | |
1391 | } | |
1392 | ||
76b3903d GV |
1393 | /* Emulate the Unix directory procedures opendir, closedir, |
1394 | and readdir. We can't use the procedures supplied in sysdep.c, | |
1395 | so we provide them here. */ | |
1396 | ||
1397 | struct direct dir_static; /* simulated directory contents */ | |
1398 | static HANDLE dir_find_handle = INVALID_HANDLE_VALUE; | |
1399 | static int dir_is_fat; | |
1400 | static char dir_pathname[MAXPATHLEN+1]; | |
1401 | static WIN32_FIND_DATA dir_find_data; | |
1402 | ||
9d3355d1 GV |
1403 | /* Support shares on a network resource as subdirectories of a read-only |
1404 | root directory. */ | |
1405 | static HANDLE wnet_enum_handle = INVALID_HANDLE_VALUE; | |
1406 | HANDLE open_unc_volume (char *); | |
1407 | char *read_unc_volume (HANDLE, char *, int); | |
1408 | void close_unc_volume (HANDLE); | |
1409 | ||
76b3903d GV |
1410 | DIR * |
1411 | opendir (char *filename) | |
1412 | { | |
1413 | DIR *dirp; | |
1414 | ||
1415 | /* Opening is done by FindFirstFile. However, a read is inherent to | |
1416 | this operation, so we defer the open until read time. */ | |
1417 | ||
76b3903d GV |
1418 | if (dir_find_handle != INVALID_HANDLE_VALUE) |
1419 | return NULL; | |
9d3355d1 GV |
1420 | if (wnet_enum_handle != INVALID_HANDLE_VALUE) |
1421 | return NULL; | |
1422 | ||
1423 | if (is_unc_volume (filename)) | |
1424 | { | |
1425 | wnet_enum_handle = open_unc_volume (filename); | |
1426 | if (wnet_enum_handle == INVALID_HANDLE_VALUE) | |
1427 | return NULL; | |
1428 | } | |
1429 | ||
1430 | if (!(dirp = (DIR *) malloc (sizeof (DIR)))) | |
1431 | return NULL; | |
76b3903d GV |
1432 | |
1433 | dirp->dd_fd = 0; | |
1434 | dirp->dd_loc = 0; | |
1435 | dirp->dd_size = 0; | |
1436 | ||
1437 | strncpy (dir_pathname, map_w32_filename (filename, NULL), MAXPATHLEN); | |
1438 | dir_pathname[MAXPATHLEN] = '\0'; | |
1439 | dir_is_fat = is_fat_volume (filename, NULL); | |
1440 | ||
1441 | return dirp; | |
1442 | } | |
1443 | ||
1444 | void | |
1445 | closedir (DIR *dirp) | |
1446 | { | |
1447 | /* If we have a find-handle open, close it. */ | |
1448 | if (dir_find_handle != INVALID_HANDLE_VALUE) | |
1449 | { | |
1450 | FindClose (dir_find_handle); | |
1451 | dir_find_handle = INVALID_HANDLE_VALUE; | |
1452 | } | |
9d3355d1 GV |
1453 | else if (wnet_enum_handle != INVALID_HANDLE_VALUE) |
1454 | { | |
1455 | close_unc_volume (wnet_enum_handle); | |
1456 | wnet_enum_handle = INVALID_HANDLE_VALUE; | |
1457 | } | |
76b3903d GV |
1458 | xfree ((char *) dirp); |
1459 | } | |
1460 | ||
1461 | struct direct * | |
1462 | readdir (DIR *dirp) | |
1463 | { | |
9d3355d1 GV |
1464 | if (wnet_enum_handle != INVALID_HANDLE_VALUE) |
1465 | { | |
1466 | if (!read_unc_volume (wnet_enum_handle, | |
1467 | dir_find_data.cFileName, | |
1468 | MAX_PATH)) | |
1469 | return NULL; | |
1470 | } | |
76b3903d | 1471 | /* If we aren't dir_finding, do a find-first, otherwise do a find-next. */ |
9d3355d1 | 1472 | else if (dir_find_handle == INVALID_HANDLE_VALUE) |
76b3903d GV |
1473 | { |
1474 | char filename[MAXNAMLEN + 3]; | |
1475 | int ln; | |
1476 | ||
1477 | strcpy (filename, dir_pathname); | |
1478 | ln = strlen (filename) - 1; | |
1479 | if (!IS_DIRECTORY_SEP (filename[ln])) | |
1480 | strcat (filename, "\\"); | |
1481 | strcat (filename, "*"); | |
1482 | ||
1483 | dir_find_handle = FindFirstFile (filename, &dir_find_data); | |
1484 | ||
1485 | if (dir_find_handle == INVALID_HANDLE_VALUE) | |
1486 | return NULL; | |
1487 | } | |
1488 | else | |
1489 | { | |
1490 | if (!FindNextFile (dir_find_handle, &dir_find_data)) | |
1491 | return NULL; | |
1492 | } | |
1493 | ||
1494 | /* Emacs never uses this value, so don't bother making it match | |
1495 | value returned by stat(). */ | |
1496 | dir_static.d_ino = 1; | |
1497 | ||
1498 | dir_static.d_reclen = sizeof (struct direct) - MAXNAMLEN + 3 + | |
1499 | dir_static.d_namlen - dir_static.d_namlen % 4; | |
1500 | ||
1501 | dir_static.d_namlen = strlen (dir_find_data.cFileName); | |
1502 | strcpy (dir_static.d_name, dir_find_data.cFileName); | |
1503 | if (dir_is_fat) | |
1504 | _strlwr (dir_static.d_name); | |
1505 | else if (!NILP (Vw32_downcase_file_names)) | |
1506 | { | |
1507 | register char *p; | |
1508 | for (p = dir_static.d_name; *p; p++) | |
1509 | if (*p >= 'a' && *p <= 'z') | |
1510 | break; | |
1511 | if (!*p) | |
1512 | _strlwr (dir_static.d_name); | |
1513 | } | |
1514 | ||
1515 | return &dir_static; | |
1516 | } | |
1517 | ||
9d3355d1 GV |
1518 | HANDLE |
1519 | open_unc_volume (char *path) | |
1520 | { | |
1521 | NETRESOURCE nr; | |
1522 | HANDLE henum; | |
1523 | int result; | |
1524 | ||
1525 | nr.dwScope = RESOURCE_GLOBALNET; | |
1526 | nr.dwType = RESOURCETYPE_DISK; | |
1527 | nr.dwDisplayType = RESOURCEDISPLAYTYPE_SERVER; | |
1528 | nr.dwUsage = RESOURCEUSAGE_CONTAINER; | |
1529 | nr.lpLocalName = NULL; | |
1530 | nr.lpRemoteName = map_w32_filename (path, NULL); | |
1531 | nr.lpComment = NULL; | |
1532 | nr.lpProvider = NULL; | |
1533 | ||
1534 | result = WNetOpenEnum(RESOURCE_GLOBALNET, RESOURCETYPE_DISK, | |
1535 | RESOURCEUSAGE_CONNECTABLE, &nr, &henum); | |
1536 | ||
1537 | if (result == NO_ERROR) | |
1538 | return henum; | |
1539 | else | |
1540 | return INVALID_HANDLE_VALUE; | |
1541 | } | |
1542 | ||
1543 | char * | |
1544 | read_unc_volume (HANDLE henum, char *readbuf, int size) | |
1545 | { | |
a302c7ae | 1546 | DWORD count; |
9d3355d1 | 1547 | int result; |
a302c7ae | 1548 | DWORD bufsize = 512; |
9d3355d1 GV |
1549 | char *buffer; |
1550 | char *ptr; | |
1551 | ||
1552 | count = 1; | |
1553 | buffer = alloca (bufsize); | |
1554 | result = WNetEnumResource (wnet_enum_handle, &count, buffer, &bufsize); | |
1555 | if (result != NO_ERROR) | |
1556 | return NULL; | |
1557 | ||
1558 | /* WNetEnumResource returns \\resource\share...skip forward to "share". */ | |
1559 | ptr = ((LPNETRESOURCE) buffer)->lpRemoteName; | |
1560 | ptr += 2; | |
1561 | while (*ptr && !IS_DIRECTORY_SEP (*ptr)) ptr++; | |
1562 | ptr++; | |
1563 | ||
1564 | strncpy (readbuf, ptr, size); | |
1565 | return readbuf; | |
1566 | } | |
1567 | ||
1568 | void | |
1569 | close_unc_volume (HANDLE henum) | |
1570 | { | |
1571 | if (henum != INVALID_HANDLE_VALUE) | |
1572 | WNetCloseEnum (henum); | |
1573 | } | |
1574 | ||
1575 | DWORD | |
1576 | unc_volume_file_attributes (char *path) | |
1577 | { | |
1578 | HANDLE henum; | |
1579 | DWORD attrs; | |
1580 | ||
1581 | henum = open_unc_volume (path); | |
1582 | if (henum == INVALID_HANDLE_VALUE) | |
1583 | return -1; | |
1584 | ||
1585 | attrs = FILE_ATTRIBUTE_READONLY | FILE_ATTRIBUTE_DIRECTORY; | |
1586 | ||
1587 | close_unc_volume (henum); | |
1588 | ||
1589 | return attrs; | |
1590 | } | |
1591 | ||
480b0c5b GV |
1592 | |
1593 | /* Shadow some MSVC runtime functions to map requests for long filenames | |
1594 | to reasonable short names if necessary. This was originally added to | |
1595 | permit running Emacs on NT 3.1 on a FAT partition, which doesn't support | |
1596 | long file names. */ | |
1597 | ||
1598 | int | |
1599 | sys_access (const char * path, int mode) | |
1600 | { | |
b3308d2e KH |
1601 | DWORD attributes; |
1602 | ||
1603 | /* MSVC implementation doesn't recognize D_OK. */ | |
1604 | path = map_w32_filename (path, NULL); | |
9d3355d1 GV |
1605 | if (is_unc_volume (path)) |
1606 | { | |
1607 | attributes = unc_volume_file_attributes (path); | |
1608 | if (attributes == -1) { | |
1609 | errno = EACCES; | |
1610 | return -1; | |
1611 | } | |
1612 | } | |
1613 | else if ((attributes = GetFileAttributes (path)) == -1) | |
b3308d2e KH |
1614 | { |
1615 | /* Should try mapping GetLastError to errno; for now just indicate | |
1616 | that path doesn't exist. */ | |
1617 | errno = EACCES; | |
1618 | return -1; | |
1619 | } | |
1620 | if ((mode & X_OK) != 0 && !is_exec (path)) | |
1621 | { | |
1622 | errno = EACCES; | |
1623 | return -1; | |
1624 | } | |
1625 | if ((mode & W_OK) != 0 && (attributes & FILE_ATTRIBUTE_READONLY) != 0) | |
1626 | { | |
1627 | errno = EACCES; | |
1628 | return -1; | |
1629 | } | |
1630 | if ((mode & D_OK) != 0 && (attributes & FILE_ATTRIBUTE_DIRECTORY) == 0) | |
1631 | { | |
1632 | errno = EACCES; | |
1633 | return -1; | |
1634 | } | |
1635 | return 0; | |
480b0c5b GV |
1636 | } |
1637 | ||
1638 | int | |
1639 | sys_chdir (const char * path) | |
1640 | { | |
fbd6baed | 1641 | return _chdir (map_w32_filename (path, NULL)); |
480b0c5b GV |
1642 | } |
1643 | ||
1644 | int | |
1645 | sys_chmod (const char * path, int mode) | |
1646 | { | |
fbd6baed | 1647 | return _chmod (map_w32_filename (path, NULL), mode); |
480b0c5b GV |
1648 | } |
1649 | ||
1650 | int | |
1651 | sys_creat (const char * path, int mode) | |
1652 | { | |
fbd6baed | 1653 | return _creat (map_w32_filename (path, NULL), mode); |
480b0c5b GV |
1654 | } |
1655 | ||
1656 | FILE * | |
1657 | sys_fopen(const char * path, const char * mode) | |
1658 | { | |
1659 | int fd; | |
1660 | int oflag; | |
1661 | const char * mode_save = mode; | |
1662 | ||
1663 | /* Force all file handles to be non-inheritable. This is necessary to | |
1664 | ensure child processes don't unwittingly inherit handles that might | |
1665 | prevent future file access. */ | |
1666 | ||
1667 | if (mode[0] == 'r') | |
1668 | oflag = O_RDONLY; | |
1669 | else if (mode[0] == 'w' || mode[0] == 'a') | |
1670 | oflag = O_WRONLY | O_CREAT | O_TRUNC; | |
95ed0025 | 1671 | else |
480b0c5b GV |
1672 | return NULL; |
1673 | ||
1674 | /* Only do simplistic option parsing. */ | |
1675 | while (*++mode) | |
1676 | if (mode[0] == '+') | |
1677 | { | |
1678 | oflag &= ~(O_RDONLY | O_WRONLY); | |
1679 | oflag |= O_RDWR; | |
1680 | } | |
1681 | else if (mode[0] == 'b') | |
1682 | { | |
1683 | oflag &= ~O_TEXT; | |
1684 | oflag |= O_BINARY; | |
1685 | } | |
1686 | else if (mode[0] == 't') | |
1687 | { | |
1688 | oflag &= ~O_BINARY; | |
1689 | oflag |= O_TEXT; | |
1690 | } | |
1691 | else break; | |
1692 | ||
fbd6baed | 1693 | fd = _open (map_w32_filename (path, NULL), oflag | _O_NOINHERIT, 0644); |
480b0c5b GV |
1694 | if (fd < 0) |
1695 | return NULL; | |
1696 | ||
76b3903d | 1697 | return _fdopen (fd, mode_save); |
95ed0025 | 1698 | } |
480b0c5b | 1699 | |
76b3903d | 1700 | /* This only works on NTFS volumes, but is useful to have. */ |
480b0c5b | 1701 | int |
76b3903d | 1702 | sys_link (const char * old, const char * new) |
480b0c5b | 1703 | { |
76b3903d GV |
1704 | HANDLE fileh; |
1705 | int result = -1; | |
1706 | char oldname[MAX_PATH], newname[MAX_PATH]; | |
1707 | ||
1708 | if (old == NULL || new == NULL) | |
1709 | { | |
1710 | errno = ENOENT; | |
1711 | return -1; | |
1712 | } | |
1713 | ||
1714 | strcpy (oldname, map_w32_filename (old, NULL)); | |
1715 | strcpy (newname, map_w32_filename (new, NULL)); | |
1716 | ||
1717 | fileh = CreateFile (oldname, 0, 0, NULL, OPEN_EXISTING, | |
1718 | FILE_FLAG_BACKUP_SEMANTICS, NULL); | |
1719 | if (fileh != INVALID_HANDLE_VALUE) | |
1720 | { | |
1721 | int wlen; | |
1722 | ||
1723 | /* Confusingly, the "alternate" stream name field does not apply | |
1724 | when restoring a hard link, and instead contains the actual | |
1725 | stream data for the link (ie. the name of the link to create). | |
1726 | The WIN32_STREAM_ID structure before the cStreamName field is | |
1727 | the stream header, which is then immediately followed by the | |
1728 | stream data. */ | |
1729 | ||
1730 | struct { | |
1731 | WIN32_STREAM_ID wid; | |
1732 | WCHAR wbuffer[MAX_PATH]; /* extra space for link name */ | |
1733 | } data; | |
1734 | ||
1735 | wlen = MultiByteToWideChar (CP_ACP, MB_PRECOMPOSED, newname, -1, | |
1736 | data.wid.cStreamName, MAX_PATH); | |
1737 | if (wlen > 0) | |
1738 | { | |
1739 | LPVOID context = NULL; | |
1740 | DWORD wbytes = 0; | |
1741 | ||
1742 | data.wid.dwStreamId = BACKUP_LINK; | |
1743 | data.wid.dwStreamAttributes = 0; | |
1744 | data.wid.Size.LowPart = wlen * sizeof(WCHAR); | |
1745 | data.wid.Size.HighPart = 0; | |
1746 | data.wid.dwStreamNameSize = 0; | |
1747 | ||
1748 | if (BackupWrite (fileh, (LPBYTE)&data, | |
1749 | offsetof (WIN32_STREAM_ID, cStreamName) | |
1750 | + data.wid.Size.LowPart, | |
1751 | &wbytes, FALSE, FALSE, &context) | |
1752 | && BackupWrite (fileh, NULL, 0, &wbytes, TRUE, FALSE, &context)) | |
1753 | { | |
1754 | /* succeeded */ | |
1755 | result = 0; | |
1756 | } | |
1757 | else | |
1758 | { | |
1759 | /* Should try mapping GetLastError to errno; for now just | |
1760 | indicate a general error (eg. links not supported). */ | |
1761 | errno = EINVAL; // perhaps EMLINK? | |
1762 | } | |
1763 | } | |
1764 | ||
1765 | CloseHandle (fileh); | |
1766 | } | |
1767 | else | |
1768 | errno = ENOENT; | |
1769 | ||
1770 | return result; | |
480b0c5b GV |
1771 | } |
1772 | ||
1773 | int | |
1774 | sys_mkdir (const char * path) | |
1775 | { | |
fbd6baed | 1776 | return _mkdir (map_w32_filename (path, NULL)); |
480b0c5b GV |
1777 | } |
1778 | ||
9d1778b1 RS |
1779 | /* Because of long name mapping issues, we need to implement this |
1780 | ourselves. Also, MSVC's _mktemp returns NULL when it can't generate | |
1781 | a unique name, instead of setting the input template to an empty | |
1782 | string. | |
1783 | ||
1784 | Standard algorithm seems to be use pid or tid with a letter on the | |
1785 | front (in place of the 6 X's) and cycle through the letters to find a | |
1786 | unique name. We extend that to allow any reasonable character as the | |
1787 | first of the 6 X's. */ | |
480b0c5b GV |
1788 | char * |
1789 | sys_mktemp (char * template) | |
1790 | { | |
9d1778b1 RS |
1791 | char * p; |
1792 | int i; | |
1793 | unsigned uid = GetCurrentThreadId (); | |
1794 | static char first_char[] = "abcdefghijklmnopqrstuvwyz0123456789!%-_@#"; | |
1795 | ||
1796 | if (template == NULL) | |
1797 | return NULL; | |
1798 | p = template + strlen (template); | |
1799 | i = 5; | |
1800 | /* replace up to the last 5 X's with uid in decimal */ | |
1801 | while (--p >= template && p[0] == 'X' && --i >= 0) | |
1802 | { | |
1803 | p[0] = '0' + uid % 10; | |
1804 | uid /= 10; | |
1805 | } | |
1806 | ||
1807 | if (i < 0 && p[0] == 'X') | |
1808 | { | |
1809 | i = 0; | |
1810 | do | |
1811 | { | |
1812 | int save_errno = errno; | |
1813 | p[0] = first_char[i]; | |
1814 | if (sys_access (template, 0) < 0) | |
1815 | { | |
1816 | errno = save_errno; | |
1817 | return template; | |
1818 | } | |
1819 | } | |
1820 | while (++i < sizeof (first_char)); | |
1821 | } | |
1822 | ||
1823 | /* Template is badly formed or else we can't generate a unique name, | |
1824 | so return empty string */ | |
1825 | template[0] = 0; | |
1826 | return template; | |
480b0c5b GV |
1827 | } |
1828 | ||
1829 | int | |
1830 | sys_open (const char * path, int oflag, int mode) | |
1831 | { | |
302f0b29 GM |
1832 | const char* mpath = map_w32_filename (path, NULL); |
1833 | /* Try to open file without _O_CREAT, to be able to write to hidden | |
1834 | and system files. Force all file handles to be | |
1835 | non-inheritable. */ | |
1836 | int res = _open (mpath, (oflag & ~_O_CREAT) | _O_NOINHERIT, mode); | |
1837 | if (res >= 0) | |
1838 | return res; | |
1839 | return _open (mpath, oflag | _O_NOINHERIT, mode); | |
480b0c5b GV |
1840 | } |
1841 | ||
1842 | int | |
1843 | sys_rename (const char * oldname, const char * newname) | |
1844 | { | |
cfb5e855 | 1845 | BOOL result; |
b3308d2e | 1846 | char temp[MAX_PATH]; |
480b0c5b | 1847 | |
e9e23e23 | 1848 | /* MoveFile on Windows 95 doesn't correctly change the short file name |
5162ffce MB |
1849 | alias in a number of circumstances (it is not easy to predict when |
1850 | just by looking at oldname and newname, unfortunately). In these | |
1851 | cases, renaming through a temporary name avoids the problem. | |
1852 | ||
e9e23e23 | 1853 | A second problem on Windows 95 is that renaming through a temp name when |
5162ffce MB |
1854 | newname is uppercase fails (the final long name ends up in |
1855 | lowercase, although the short alias might be uppercase) UNLESS the | |
1856 | long temp name is not 8.3. | |
1857 | ||
e9e23e23 | 1858 | So, on Windows 95 we always rename through a temp name, and we make sure |
5162ffce | 1859 | the temp name has a long extension to ensure correct renaming. */ |
480b0c5b | 1860 | |
fbd6baed | 1861 | strcpy (temp, map_w32_filename (oldname, NULL)); |
480b0c5b | 1862 | |
76b3903d | 1863 | if (os_subtype == OS_WIN95) |
480b0c5b | 1864 | { |
b3308d2e | 1865 | char * o; |
480b0c5b | 1866 | char * p; |
b3308d2e KH |
1867 | int i = 0; |
1868 | ||
1869 | oldname = map_w32_filename (oldname, NULL); | |
1870 | if (o = strrchr (oldname, '\\')) | |
1871 | o++; | |
1872 | else | |
1873 | o = (char *) oldname; | |
480b0c5b | 1874 | |
480b0c5b GV |
1875 | if (p = strrchr (temp, '\\')) |
1876 | p++; | |
1877 | else | |
1878 | p = temp; | |
b3308d2e KH |
1879 | |
1880 | do | |
1881 | { | |
1882 | /* Force temp name to require a manufactured 8.3 alias - this | |
1883 | seems to make the second rename work properly. */ | |
f313ee82 | 1884 | sprintf (p, "_.%s.%u", o, i); |
b3308d2e | 1885 | i++; |
58f0cb7e | 1886 | result = rename (oldname, temp); |
b3308d2e KH |
1887 | } |
1888 | /* This loop must surely terminate! */ | |
cfb5e855 | 1889 | while (result < 0 && errno == EEXIST); |
58f0cb7e | 1890 | if (result < 0) |
480b0c5b GV |
1891 | return -1; |
1892 | } | |
1893 | ||
1894 | /* Emulate Unix behaviour - newname is deleted if it already exists | |
5162ffce | 1895 | (at least if it is a file; don't do this for directories). |
76b3903d | 1896 | |
b3308d2e KH |
1897 | Since we mustn't do this if we are just changing the case of the |
1898 | file name (we would end up deleting the file we are trying to | |
1899 | rename!), we let rename detect if the destination file already | |
1900 | exists - that way we avoid the possible pitfalls of trying to | |
1901 | determine ourselves whether two names really refer to the same | |
1902 | file, which is not always possible in the general case. (Consider | |
1903 | all the permutations of shared or subst'd drives, etc.) */ | |
1904 | ||
1905 | newname = map_w32_filename (newname, NULL); | |
eb9ea53f | 1906 | result = rename (temp, newname); |
b3308d2e KH |
1907 | |
1908 | if (result < 0 | |
cfb5e855 | 1909 | && errno == EEXIST |
b3308d2e KH |
1910 | && _chmod (newname, 0666) == 0 |
1911 | && _unlink (newname) == 0) | |
1912 | result = rename (temp, newname); | |
480b0c5b | 1913 | |
eb9ea53f | 1914 | return result; |
480b0c5b GV |
1915 | } |
1916 | ||
1917 | int | |
1918 | sys_rmdir (const char * path) | |
1919 | { | |
fbd6baed | 1920 | return _rmdir (map_w32_filename (path, NULL)); |
480b0c5b GV |
1921 | } |
1922 | ||
1923 | int | |
1924 | sys_unlink (const char * path) | |
1925 | { | |
16bb7578 GV |
1926 | path = map_w32_filename (path, NULL); |
1927 | ||
1928 | /* On Unix, unlink works without write permission. */ | |
1929 | _chmod (path, 0666); | |
1930 | return _unlink (path); | |
480b0c5b GV |
1931 | } |
1932 | ||
1933 | static FILETIME utc_base_ft; | |
1934 | static long double utc_base; | |
1935 | static int init = 0; | |
1936 | ||
1937 | static time_t | |
1938 | convert_time (FILETIME ft) | |
1939 | { | |
1940 | long double ret; | |
1941 | ||
1942 | if (!init) | |
1943 | { | |
1944 | /* Determine the delta between 1-Jan-1601 and 1-Jan-1970. */ | |
1945 | SYSTEMTIME st; | |
1946 | ||
1947 | st.wYear = 1970; | |
1948 | st.wMonth = 1; | |
1949 | st.wDay = 1; | |
1950 | st.wHour = 0; | |
1951 | st.wMinute = 0; | |
1952 | st.wSecond = 0; | |
1953 | st.wMilliseconds = 0; | |
1954 | ||
1955 | SystemTimeToFileTime (&st, &utc_base_ft); | |
1956 | utc_base = (long double) utc_base_ft.dwHighDateTime | |
1957 | * 4096 * 1024 * 1024 + utc_base_ft.dwLowDateTime; | |
1958 | init = 1; | |
1959 | } | |
1960 | ||
1961 | if (CompareFileTime (&ft, &utc_base_ft) < 0) | |
1962 | return 0; | |
1963 | ||
1964 | ret = (long double) ft.dwHighDateTime * 4096 * 1024 * 1024 + ft.dwLowDateTime; | |
1965 | ret -= utc_base; | |
1966 | return (time_t) (ret * 1e-7); | |
1967 | } | |
1968 | ||
480b0c5b GV |
1969 | void |
1970 | convert_from_time_t (time_t time, FILETIME * pft) | |
1971 | { | |
1972 | long double tmp; | |
1973 | ||
1974 | if (!init) | |
1975 | { | |
1976 | /* Determine the delta between 1-Jan-1601 and 1-Jan-1970. */ | |
1977 | SYSTEMTIME st; | |
1978 | ||
1979 | st.wYear = 1970; | |
1980 | st.wMonth = 1; | |
1981 | st.wDay = 1; | |
1982 | st.wHour = 0; | |
1983 | st.wMinute = 0; | |
1984 | st.wSecond = 0; | |
1985 | st.wMilliseconds = 0; | |
1986 | ||
1987 | SystemTimeToFileTime (&st, &utc_base_ft); | |
1988 | utc_base = (long double) utc_base_ft.dwHighDateTime | |
1989 | * 4096 * 1024 * 1024 + utc_base_ft.dwLowDateTime; | |
1990 | init = 1; | |
1991 | } | |
1992 | ||
1993 | /* time in 100ns units since 1-Jan-1601 */ | |
1994 | tmp = (long double) time * 1e7 + utc_base; | |
1995 | pft->dwHighDateTime = (DWORD) (tmp / (4096.0 * 1024 * 1024)); | |
16bb7578 | 1996 | pft->dwLowDateTime = (DWORD) (tmp - (4096.0 * 1024 * 1024) * pft->dwHighDateTime); |
480b0c5b | 1997 | } |
480b0c5b | 1998 | |
76b3903d GV |
1999 | #if 0 |
2000 | /* No reason to keep this; faking inode values either by hashing or even | |
2001 | using the file index from GetInformationByHandle, is not perfect and | |
2002 | so by default Emacs doesn't use the inode values on Windows. | |
2003 | Instead, we now determine file-truename correctly (except for | |
2004 | possible drive aliasing etc). */ | |
2005 | ||
2006 | /* Modified version of "PJW" algorithm (see the "Dragon" compiler book). */ | |
480b0c5b | 2007 | static unsigned |
76b3903d | 2008 | hashval (const unsigned char * str) |
480b0c5b GV |
2009 | { |
2010 | unsigned h = 0; | |
480b0c5b GV |
2011 | while (*str) |
2012 | { | |
2013 | h = (h << 4) + *str++; | |
76b3903d | 2014 | h ^= (h >> 28); |
480b0c5b GV |
2015 | } |
2016 | return h; | |
2017 | } | |
2018 | ||
2019 | /* Return the hash value of the canonical pathname, excluding the | |
2020 | drive/UNC header, to get a hopefully unique inode number. */ | |
76b3903d | 2021 | static DWORD |
480b0c5b GV |
2022 | generate_inode_val (const char * name) |
2023 | { | |
2024 | char fullname[ MAX_PATH ]; | |
2025 | char * p; | |
2026 | unsigned hash; | |
2027 | ||
76b3903d GV |
2028 | /* Get the truly canonical filename, if it exists. (Note: this |
2029 | doesn't resolve aliasing due to subst commands, or recognise hard | |
2030 | links. */ | |
2031 | if (!w32_get_long_filename ((char *)name, fullname, MAX_PATH)) | |
2032 | abort (); | |
2033 | ||
2034 | parse_root (fullname, &p); | |
fbd6baed | 2035 | /* Normal W32 filesystems are still case insensitive. */ |
480b0c5b | 2036 | _strlwr (p); |
76b3903d | 2037 | return hashval (p); |
480b0c5b GV |
2038 | } |
2039 | ||
76b3903d GV |
2040 | #endif |
2041 | ||
480b0c5b GV |
2042 | /* MSVC stat function can't cope with UNC names and has other bugs, so |
2043 | replace it with our own. This also allows us to calculate consistent | |
2044 | inode values without hacks in the main Emacs code. */ | |
2045 | int | |
2046 | stat (const char * path, struct stat * buf) | |
2047 | { | |
eb9ea53f | 2048 | char *name, *r; |
480b0c5b GV |
2049 | WIN32_FIND_DATA wfd; |
2050 | HANDLE fh; | |
76b3903d | 2051 | DWORD fake_inode; |
480b0c5b GV |
2052 | int permission; |
2053 | int len; | |
2054 | int rootdir = FALSE; | |
2055 | ||
2056 | if (path == NULL || buf == NULL) | |
2057 | { | |
2058 | errno = EFAULT; | |
2059 | return -1; | |
2060 | } | |
2061 | ||
fbd6baed | 2062 | name = (char *) map_w32_filename (path, &path); |
9ab8560d | 2063 | /* must be valid filename, no wild cards or other invalid characters */ |
bb1584c8 | 2064 | if (strpbrk (name, "*?|<>\"")) |
480b0c5b GV |
2065 | { |
2066 | errno = ENOENT; | |
2067 | return -1; | |
2068 | } | |
2069 | ||
eb9ea53f GV |
2070 | /* If name is "c:/.." or "/.." then stat "c:/" or "/". */ |
2071 | r = IS_DEVICE_SEP (name[1]) ? &name[2] : name; | |
2072 | if (IS_DIRECTORY_SEP (r[0]) && r[1] == '.' && r[2] == '.' && r[3] == '\0') | |
2073 | { | |
2074 | r[1] = r[2] = '\0'; | |
2075 | } | |
2076 | ||
480b0c5b GV |
2077 | /* Remove trailing directory separator, unless name is the root |
2078 | directory of a drive or UNC volume in which case ensure there | |
2079 | is a trailing separator. */ | |
2080 | len = strlen (name); | |
2081 | rootdir = (path >= name + len - 1 | |
2082 | && (IS_DIRECTORY_SEP (*path) || *path == 0)); | |
2083 | name = strcpy (alloca (len + 2), name); | |
2084 | ||
9d3355d1 GV |
2085 | if (is_unc_volume (name)) |
2086 | { | |
2087 | DWORD attrs = unc_volume_file_attributes (name); | |
2088 | ||
2089 | if (attrs == -1) | |
2090 | return -1; | |
2091 | ||
2092 | memset (&wfd, 0, sizeof (wfd)); | |
2093 | wfd.dwFileAttributes = attrs; | |
2094 | wfd.ftCreationTime = utc_base_ft; | |
2095 | wfd.ftLastAccessTime = utc_base_ft; | |
2096 | wfd.ftLastWriteTime = utc_base_ft; | |
2097 | strcpy (wfd.cFileName, name); | |
2098 | } | |
2099 | else if (rootdir) | |
480b0c5b GV |
2100 | { |
2101 | if (!IS_DIRECTORY_SEP (name[len-1])) | |
2102 | strcat (name, "\\"); | |
2103 | if (GetDriveType (name) < 2) | |
2104 | { | |
2105 | errno = ENOENT; | |
2106 | return -1; | |
2107 | } | |
2108 | memset (&wfd, 0, sizeof (wfd)); | |
2109 | wfd.dwFileAttributes = FILE_ATTRIBUTE_DIRECTORY; | |
2110 | wfd.ftCreationTime = utc_base_ft; | |
2111 | wfd.ftLastAccessTime = utc_base_ft; | |
2112 | wfd.ftLastWriteTime = utc_base_ft; | |
2113 | strcpy (wfd.cFileName, name); | |
2114 | } | |
2115 | else | |
2116 | { | |
2117 | if (IS_DIRECTORY_SEP (name[len-1])) | |
2118 | name[len - 1] = 0; | |
76b3903d GV |
2119 | |
2120 | /* (This is hacky, but helps when doing file completions on | |
2121 | network drives.) Optimize by using information available from | |
2122 | active readdir if possible. */ | |
b19cc00c GV |
2123 | len = strlen (dir_pathname); |
2124 | if (IS_DIRECTORY_SEP (dir_pathname[len-1])) | |
2125 | len--; | |
76b3903d | 2126 | if (dir_find_handle != INVALID_HANDLE_VALUE |
b19cc00c | 2127 | && strnicmp (name, dir_pathname, len) == 0 |
76b3903d GV |
2128 | && IS_DIRECTORY_SEP (name[len]) |
2129 | && stricmp (name + len + 1, dir_static.d_name) == 0) | |
480b0c5b | 2130 | { |
76b3903d GV |
2131 | /* This was the last entry returned by readdir. */ |
2132 | wfd = dir_find_data; | |
2133 | } | |
2134 | else | |
2135 | { | |
2136 | fh = FindFirstFile (name, &wfd); | |
2137 | if (fh == INVALID_HANDLE_VALUE) | |
2138 | { | |
2139 | errno = ENOENT; | |
2140 | return -1; | |
2141 | } | |
2142 | FindClose (fh); | |
480b0c5b | 2143 | } |
480b0c5b GV |
2144 | } |
2145 | ||
2146 | if (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) | |
2147 | { | |
2148 | buf->st_mode = _S_IFDIR; | |
2149 | buf->st_nlink = 2; /* doesn't really matter */ | |
76b3903d | 2150 | fake_inode = 0; /* this doesn't either I think */ |
480b0c5b | 2151 | } |
710ea1b8 RS |
2152 | else if (!NILP (Vw32_get_true_file_attributes) |
2153 | /* No access rights required to get info. */ | |
2154 | && (fh = CreateFile (name, 0, 0, NULL, OPEN_EXISTING, 0, NULL)) | |
2155 | != INVALID_HANDLE_VALUE) | |
480b0c5b | 2156 | { |
480b0c5b GV |
2157 | /* This is more accurate in terms of gettting the correct number |
2158 | of links, but is quite slow (it is noticable when Emacs is | |
2159 | making a list of file name completions). */ | |
2160 | BY_HANDLE_FILE_INFORMATION info; | |
2161 | ||
480b0c5b GV |
2162 | if (GetFileInformationByHandle (fh, &info)) |
2163 | { | |
480b0c5b | 2164 | buf->st_nlink = info.nNumberOfLinks; |
76b3903d GV |
2165 | /* Might as well use file index to fake inode values, but this |
2166 | is not guaranteed to be unique unless we keep a handle open | |
2167 | all the time (even then there are situations where it is | |
2168 | not unique). Reputedly, there are at most 48 bits of info | |
2169 | (on NTFS, presumably less on FAT). */ | |
2170 | fake_inode = info.nFileIndexLow ^ info.nFileIndexHigh; | |
480b0c5b GV |
2171 | } |
2172 | else | |
2173 | { | |
01f31dfb AI |
2174 | buf->st_nlink = 1; |
2175 | fake_inode = 0; | |
2176 | } | |
2177 | ||
2178 | switch (GetFileType (fh)) | |
2179 | { | |
2180 | case FILE_TYPE_DISK: | |
2181 | buf->st_mode = _S_IFREG; | |
2182 | break; | |
2183 | case FILE_TYPE_PIPE: | |
2184 | buf->st_mode = _S_IFIFO; | |
2185 | break; | |
2186 | case FILE_TYPE_CHAR: | |
2187 | case FILE_TYPE_UNKNOWN: | |
2188 | default: | |
2189 | buf->st_mode = _S_IFCHR; | |
480b0c5b | 2190 | } |
01f31dfb | 2191 | CloseHandle (fh); |
76b3903d GV |
2192 | } |
2193 | else | |
2194 | { | |
2195 | /* Don't bother to make this information more accurate. */ | |
480b0c5b GV |
2196 | buf->st_mode = _S_IFREG; |
2197 | buf->st_nlink = 1; | |
76b3903d GV |
2198 | fake_inode = 0; |
2199 | } | |
2200 | ||
2201 | #if 0 | |
2202 | /* Not sure if there is any point in this. */ | |
2203 | if (!NILP (Vw32_generate_fake_inodes)) | |
2204 | fake_inode = generate_inode_val (name); | |
2205 | else if (fake_inode == 0) | |
2206 | { | |
2207 | /* For want of something better, try to make everything unique. */ | |
2208 | static DWORD gen_num = 0; | |
2209 | fake_inode = ++gen_num; | |
480b0c5b | 2210 | } |
76b3903d GV |
2211 | #endif |
2212 | ||
2213 | /* MSVC defines _ino_t to be short; other libc's might not. */ | |
2214 | if (sizeof (buf->st_ino) == 2) | |
2215 | buf->st_ino = fake_inode ^ (fake_inode >> 16); | |
2216 | else | |
2217 | buf->st_ino = fake_inode; | |
480b0c5b GV |
2218 | |
2219 | /* consider files to belong to current user */ | |
2220 | buf->st_uid = the_passwd.pw_uid; | |
2221 | buf->st_gid = the_passwd.pw_gid; | |
2222 | ||
fbd6baed | 2223 | /* volume_info is set indirectly by map_w32_filename */ |
480b0c5b GV |
2224 | buf->st_dev = volume_info.serialnum; |
2225 | buf->st_rdev = volume_info.serialnum; | |
2226 | ||
480b0c5b GV |
2227 | |
2228 | buf->st_size = wfd.nFileSizeLow; | |
2229 | ||
2230 | /* Convert timestamps to Unix format. */ | |
2231 | buf->st_mtime = convert_time (wfd.ftLastWriteTime); | |
2232 | buf->st_atime = convert_time (wfd.ftLastAccessTime); | |
2233 | if (buf->st_atime == 0) buf->st_atime = buf->st_mtime; | |
2234 | buf->st_ctime = convert_time (wfd.ftCreationTime); | |
2235 | if (buf->st_ctime == 0) buf->st_ctime = buf->st_mtime; | |
2236 | ||
2237 | /* determine rwx permissions */ | |
2238 | if (wfd.dwFileAttributes & FILE_ATTRIBUTE_READONLY) | |
2239 | permission = _S_IREAD; | |
2240 | else | |
2241 | permission = _S_IREAD | _S_IWRITE; | |
2242 | ||
2243 | if (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) | |
2244 | permission |= _S_IEXEC; | |
b3308d2e KH |
2245 | else if (is_exec (name)) |
2246 | permission |= _S_IEXEC; | |
480b0c5b GV |
2247 | |
2248 | buf->st_mode |= permission | (permission >> 3) | (permission >> 6); | |
2249 | ||
2250 | return 0; | |
2251 | } | |
2252 | ||
16bb7578 GV |
2253 | /* Provide fstat and utime as well as stat for consistent handling of |
2254 | file timestamps. */ | |
2255 | int | |
2256 | fstat (int desc, struct stat * buf) | |
2257 | { | |
2258 | HANDLE fh = (HANDLE) _get_osfhandle (desc); | |
2259 | BY_HANDLE_FILE_INFORMATION info; | |
2260 | DWORD fake_inode; | |
2261 | int permission; | |
2262 | ||
2263 | switch (GetFileType (fh) & ~FILE_TYPE_REMOTE) | |
2264 | { | |
2265 | case FILE_TYPE_DISK: | |
2266 | buf->st_mode = _S_IFREG; | |
2267 | if (!GetFileInformationByHandle (fh, &info)) | |
2268 | { | |
2269 | errno = EACCES; | |
2270 | return -1; | |
2271 | } | |
2272 | break; | |
2273 | case FILE_TYPE_PIPE: | |
2274 | buf->st_mode = _S_IFIFO; | |
2275 | goto non_disk; | |
2276 | case FILE_TYPE_CHAR: | |
2277 | case FILE_TYPE_UNKNOWN: | |
2278 | default: | |
2279 | buf->st_mode = _S_IFCHR; | |
2280 | non_disk: | |
2281 | memset (&info, 0, sizeof (info)); | |
2282 | info.dwFileAttributes = 0; | |
2283 | info.ftCreationTime = utc_base_ft; | |
2284 | info.ftLastAccessTime = utc_base_ft; | |
2285 | info.ftLastWriteTime = utc_base_ft; | |
2286 | } | |
2287 | ||
2288 | if (info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) | |
2289 | { | |
2290 | buf->st_mode = _S_IFDIR; | |
2291 | buf->st_nlink = 2; /* doesn't really matter */ | |
2292 | fake_inode = 0; /* this doesn't either I think */ | |
2293 | } | |
2294 | else | |
2295 | { | |
2296 | buf->st_nlink = info.nNumberOfLinks; | |
2297 | /* Might as well use file index to fake inode values, but this | |
2298 | is not guaranteed to be unique unless we keep a handle open | |
2299 | all the time (even then there are situations where it is | |
2300 | not unique). Reputedly, there are at most 48 bits of info | |
2301 | (on NTFS, presumably less on FAT). */ | |
2302 | fake_inode = info.nFileIndexLow ^ info.nFileIndexHigh; | |
2303 | } | |
2304 | ||
2305 | /* MSVC defines _ino_t to be short; other libc's might not. */ | |
2306 | if (sizeof (buf->st_ino) == 2) | |
2307 | buf->st_ino = fake_inode ^ (fake_inode >> 16); | |
2308 | else | |
2309 | buf->st_ino = fake_inode; | |
2310 | ||
2311 | /* consider files to belong to current user */ | |
2312 | buf->st_uid = 0; | |
2313 | buf->st_gid = 0; | |
2314 | ||
2315 | buf->st_dev = info.dwVolumeSerialNumber; | |
2316 | buf->st_rdev = info.dwVolumeSerialNumber; | |
2317 | ||
2318 | buf->st_size = info.nFileSizeLow; | |
2319 | ||
2320 | /* Convert timestamps to Unix format. */ | |
2321 | buf->st_mtime = convert_time (info.ftLastWriteTime); | |
2322 | buf->st_atime = convert_time (info.ftLastAccessTime); | |
2323 | if (buf->st_atime == 0) buf->st_atime = buf->st_mtime; | |
2324 | buf->st_ctime = convert_time (info.ftCreationTime); | |
2325 | if (buf->st_ctime == 0) buf->st_ctime = buf->st_mtime; | |
2326 | ||
2327 | /* determine rwx permissions */ | |
2328 | if (info.dwFileAttributes & FILE_ATTRIBUTE_READONLY) | |
2329 | permission = _S_IREAD; | |
2330 | else | |
2331 | permission = _S_IREAD | _S_IWRITE; | |
2332 | ||
2333 | if (info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) | |
2334 | permission |= _S_IEXEC; | |
2335 | else | |
2336 | { | |
2337 | #if 0 /* no way of knowing the filename */ | |
2338 | char * p = strrchr (name, '.'); | |
2339 | if (p != NULL && | |
2340 | (stricmp (p, ".exe") == 0 || | |
2341 | stricmp (p, ".com") == 0 || | |
2342 | stricmp (p, ".bat") == 0 || | |
2343 | stricmp (p, ".cmd") == 0)) | |
2344 | permission |= _S_IEXEC; | |
2345 | #endif | |
2346 | } | |
2347 | ||
2348 | buf->st_mode |= permission | (permission >> 3) | (permission >> 6); | |
2349 | ||
2350 | return 0; | |
2351 | } | |
2352 | ||
2353 | int | |
2354 | utime (const char *name, struct utimbuf *times) | |
2355 | { | |
2356 | struct utimbuf deftime; | |
2357 | HANDLE fh; | |
2358 | FILETIME mtime; | |
2359 | FILETIME atime; | |
2360 | ||
2361 | if (times == NULL) | |
2362 | { | |
2363 | deftime.modtime = deftime.actime = time (NULL); | |
2364 | times = &deftime; | |
2365 | } | |
2366 | ||
2367 | /* Need write access to set times. */ | |
2368 | fh = CreateFile (name, GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, | |
2369 | 0, OPEN_EXISTING, 0, NULL); | |
2370 | if (fh) | |
2371 | { | |
2372 | convert_from_time_t (times->actime, &atime); | |
2373 | convert_from_time_t (times->modtime, &mtime); | |
2374 | if (!SetFileTime (fh, NULL, &atime, &mtime)) | |
2375 | { | |
2376 | CloseHandle (fh); | |
2377 | errno = EACCES; | |
2378 | return -1; | |
2379 | } | |
2380 | CloseHandle (fh); | |
2381 | } | |
2382 | else | |
2383 | { | |
2384 | errno = EINVAL; | |
2385 | return -1; | |
2386 | } | |
2387 | return 0; | |
2388 | } | |
2389 | ||
480b0c5b GV |
2390 | #ifdef HAVE_SOCKETS |
2391 | ||
2392 | /* Wrappers for winsock functions to map between our file descriptors | |
2393 | and winsock's handles; also set h_errno for convenience. | |
2394 | ||
2395 | To allow Emacs to run on systems which don't have winsock support | |
2396 | installed, we dynamically link to winsock on startup if present, and | |
2397 | otherwise provide the minimum necessary functionality | |
2398 | (eg. gethostname). */ | |
2399 | ||
2400 | /* function pointers for relevant socket functions */ | |
2401 | int (PASCAL *pfn_WSAStartup) (WORD wVersionRequired, LPWSADATA lpWSAData); | |
2402 | void (PASCAL *pfn_WSASetLastError) (int iError); | |
2403 | int (PASCAL *pfn_WSAGetLastError) (void); | |
2404 | int (PASCAL *pfn_socket) (int af, int type, int protocol); | |
2405 | int (PASCAL *pfn_bind) (SOCKET s, const struct sockaddr *addr, int namelen); | |
2406 | int (PASCAL *pfn_connect) (SOCKET s, const struct sockaddr *addr, int namelen); | |
2407 | int (PASCAL *pfn_ioctlsocket) (SOCKET s, long cmd, u_long *argp); | |
2408 | int (PASCAL *pfn_recv) (SOCKET s, char * buf, int len, int flags); | |
2409 | int (PASCAL *pfn_send) (SOCKET s, const char * buf, int len, int flags); | |
2410 | int (PASCAL *pfn_closesocket) (SOCKET s); | |
2411 | int (PASCAL *pfn_shutdown) (SOCKET s, int how); | |
2412 | int (PASCAL *pfn_WSACleanup) (void); | |
2413 | ||
2414 | u_short (PASCAL *pfn_htons) (u_short hostshort); | |
2415 | u_short (PASCAL *pfn_ntohs) (u_short netshort); | |
2416 | unsigned long (PASCAL *pfn_inet_addr) (const char * cp); | |
2417 | int (PASCAL *pfn_gethostname) (char * name, int namelen); | |
2418 | struct hostent * (PASCAL *pfn_gethostbyname) (const char * name); | |
2419 | struct servent * (PASCAL *pfn_getservbyname) (const char * name, const char * proto); | |
f1614061 RS |
2420 | |
2421 | /* SetHandleInformation is only needed to make sockets non-inheritable. */ | |
2422 | BOOL (WINAPI *pfn_SetHandleInformation) (HANDLE object, DWORD mask, DWORD flags); | |
2423 | #ifndef HANDLE_FLAG_INHERIT | |
2424 | #define HANDLE_FLAG_INHERIT 1 | |
2425 | #endif | |
480b0c5b | 2426 | |
f249a012 RS |
2427 | HANDLE winsock_lib; |
2428 | static int winsock_inuse; | |
480b0c5b | 2429 | |
f249a012 | 2430 | BOOL |
480b0c5b GV |
2431 | term_winsock (void) |
2432 | { | |
f249a012 | 2433 | if (winsock_lib != NULL && winsock_inuse == 0) |
480b0c5b | 2434 | { |
f249a012 RS |
2435 | /* Not sure what would cause WSAENETDOWN, or even if it can happen |
2436 | after WSAStartup returns successfully, but it seems reasonable | |
2437 | to allow unloading winsock anyway in that case. */ | |
2438 | if (pfn_WSACleanup () == 0 || | |
2439 | pfn_WSAGetLastError () == WSAENETDOWN) | |
2440 | { | |
2441 | if (FreeLibrary (winsock_lib)) | |
2442 | winsock_lib = NULL; | |
2443 | return TRUE; | |
2444 | } | |
480b0c5b | 2445 | } |
f249a012 | 2446 | return FALSE; |
480b0c5b GV |
2447 | } |
2448 | ||
f249a012 RS |
2449 | BOOL |
2450 | init_winsock (int load_now) | |
480b0c5b GV |
2451 | { |
2452 | WSADATA winsockData; | |
2453 | ||
f249a012 RS |
2454 | if (winsock_lib != NULL) |
2455 | return TRUE; | |
f1614061 RS |
2456 | |
2457 | pfn_SetHandleInformation = NULL; | |
2458 | pfn_SetHandleInformation | |
2459 | = (void *) GetProcAddress (GetModuleHandle ("kernel32.dll"), | |
2460 | "SetHandleInformation"); | |
2461 | ||
480b0c5b GV |
2462 | winsock_lib = LoadLibrary ("wsock32.dll"); |
2463 | ||
2464 | if (winsock_lib != NULL) | |
2465 | { | |
2466 | /* dynamically link to socket functions */ | |
2467 | ||
2468 | #define LOAD_PROC(fn) \ | |
2469 | if ((pfn_##fn = (void *) GetProcAddress (winsock_lib, #fn)) == NULL) \ | |
2470 | goto fail; | |
2471 | ||
2472 | LOAD_PROC( WSAStartup ); | |
2473 | LOAD_PROC( WSASetLastError ); | |
2474 | LOAD_PROC( WSAGetLastError ); | |
2475 | LOAD_PROC( socket ); | |
2476 | LOAD_PROC( bind ); | |
2477 | LOAD_PROC( connect ); | |
2478 | LOAD_PROC( ioctlsocket ); | |
2479 | LOAD_PROC( recv ); | |
2480 | LOAD_PROC( send ); | |
2481 | LOAD_PROC( closesocket ); | |
2482 | LOAD_PROC( shutdown ); | |
2483 | LOAD_PROC( htons ); | |
2484 | LOAD_PROC( ntohs ); | |
2485 | LOAD_PROC( inet_addr ); | |
2486 | LOAD_PROC( gethostname ); | |
2487 | LOAD_PROC( gethostbyname ); | |
2488 | LOAD_PROC( getservbyname ); | |
2489 | LOAD_PROC( WSACleanup ); | |
2490 | ||
f249a012 RS |
2491 | #undef LOAD_PROC |
2492 | ||
480b0c5b GV |
2493 | /* specify version 1.1 of winsock */ |
2494 | if (pfn_WSAStartup (0x101, &winsockData) == 0) | |
2495 | { | |
f249a012 RS |
2496 | if (winsockData.wVersion != 0x101) |
2497 | goto fail; | |
2498 | ||
2499 | if (!load_now) | |
2500 | { | |
2501 | /* Report that winsock exists and is usable, but leave | |
2502 | socket functions disabled. I am assuming that calling | |
2503 | WSAStartup does not require any network interaction, | |
2504 | and in particular does not cause or require a dial-up | |
2505 | connection to be established. */ | |
2506 | ||
2507 | pfn_WSACleanup (); | |
2508 | FreeLibrary (winsock_lib); | |
2509 | winsock_lib = NULL; | |
2510 | } | |
2511 | winsock_inuse = 0; | |
2512 | return TRUE; | |
480b0c5b GV |
2513 | } |
2514 | ||
2515 | fail: | |
2516 | FreeLibrary (winsock_lib); | |
f249a012 | 2517 | winsock_lib = NULL; |
480b0c5b | 2518 | } |
f249a012 RS |
2519 | |
2520 | return FALSE; | |
480b0c5b GV |
2521 | } |
2522 | ||
2523 | ||
2524 | int h_errno = 0; | |
2525 | ||
2526 | /* function to set h_errno for compatability; map winsock error codes to | |
2527 | normal system codes where they overlap (non-overlapping definitions | |
2528 | are already in <sys/socket.h> */ | |
2529 | static void set_errno () | |
2530 | { | |
f249a012 | 2531 | if (winsock_lib == NULL) |
480b0c5b GV |
2532 | h_errno = EINVAL; |
2533 | else | |
2534 | h_errno = pfn_WSAGetLastError (); | |
2535 | ||
2536 | switch (h_errno) | |
2537 | { | |
2538 | case WSAEACCES: h_errno = EACCES; break; | |
2539 | case WSAEBADF: h_errno = EBADF; break; | |
2540 | case WSAEFAULT: h_errno = EFAULT; break; | |
2541 | case WSAEINTR: h_errno = EINTR; break; | |
2542 | case WSAEINVAL: h_errno = EINVAL; break; | |
2543 | case WSAEMFILE: h_errno = EMFILE; break; | |
2544 | case WSAENAMETOOLONG: h_errno = ENAMETOOLONG; break; | |
2545 | case WSAENOTEMPTY: h_errno = ENOTEMPTY; break; | |
2546 | } | |
2547 | errno = h_errno; | |
2548 | } | |
2549 | ||
2550 | static void check_errno () | |
2551 | { | |
f249a012 | 2552 | if (h_errno == 0 && winsock_lib != NULL) |
480b0c5b GV |
2553 | pfn_WSASetLastError (0); |
2554 | } | |
2555 | ||
d8fcc1b9 AI |
2556 | /* Extend strerror to handle the winsock-specific error codes. */ |
2557 | struct { | |
2558 | int errnum; | |
2559 | char * msg; | |
2560 | } _wsa_errlist[] = { | |
2561 | WSAEINTR , "Interrupted function call", | |
2562 | WSAEBADF , "Bad file descriptor", | |
2563 | WSAEACCES , "Permission denied", | |
2564 | WSAEFAULT , "Bad address", | |
2565 | WSAEINVAL , "Invalid argument", | |
2566 | WSAEMFILE , "Too many open files", | |
2567 | ||
2568 | WSAEWOULDBLOCK , "Resource temporarily unavailable", | |
2569 | WSAEINPROGRESS , "Operation now in progress", | |
2570 | WSAEALREADY , "Operation already in progress", | |
2571 | WSAENOTSOCK , "Socket operation on non-socket", | |
2572 | WSAEDESTADDRREQ , "Destination address required", | |
2573 | WSAEMSGSIZE , "Message too long", | |
2574 | WSAEPROTOTYPE , "Protocol wrong type for socket", | |
2575 | WSAENOPROTOOPT , "Bad protocol option", | |
2576 | WSAEPROTONOSUPPORT , "Protocol not supported", | |
2577 | WSAESOCKTNOSUPPORT , "Socket type not supported", | |
2578 | WSAEOPNOTSUPP , "Operation not supported", | |
2579 | WSAEPFNOSUPPORT , "Protocol family not supported", | |
2580 | WSAEAFNOSUPPORT , "Address family not supported by protocol family", | |
2581 | WSAEADDRINUSE , "Address already in use", | |
2582 | WSAEADDRNOTAVAIL , "Cannot assign requested address", | |
2583 | WSAENETDOWN , "Network is down", | |
2584 | WSAENETUNREACH , "Network is unreachable", | |
2585 | WSAENETRESET , "Network dropped connection on reset", | |
2586 | WSAECONNABORTED , "Software caused connection abort", | |
2587 | WSAECONNRESET , "Connection reset by peer", | |
2588 | WSAENOBUFS , "No buffer space available", | |
2589 | WSAEISCONN , "Socket is already connected", | |
2590 | WSAENOTCONN , "Socket is not connected", | |
2591 | WSAESHUTDOWN , "Cannot send after socket shutdown", | |
2592 | WSAETOOMANYREFS , "Too many references", /* not sure */ | |
2593 | WSAETIMEDOUT , "Connection timed out", | |
2594 | WSAECONNREFUSED , "Connection refused", | |
2595 | WSAELOOP , "Network loop", /* not sure */ | |
2596 | WSAENAMETOOLONG , "Name is too long", | |
2597 | WSAEHOSTDOWN , "Host is down", | |
2598 | WSAEHOSTUNREACH , "No route to host", | |
2599 | WSAENOTEMPTY , "Buffer not empty", /* not sure */ | |
2600 | WSAEPROCLIM , "Too many processes", | |
2601 | WSAEUSERS , "Too many users", /* not sure */ | |
2602 | WSAEDQUOT , "Double quote in host name", /* really not sure */ | |
2603 | WSAESTALE , "Data is stale", /* not sure */ | |
2604 | WSAEREMOTE , "Remote error", /* not sure */ | |
2605 | ||
2606 | WSASYSNOTREADY , "Network subsystem is unavailable", | |
2607 | WSAVERNOTSUPPORTED , "WINSOCK.DLL version out of range", | |
2608 | WSANOTINITIALISED , "Winsock not initialized successfully", | |
2609 | WSAEDISCON , "Graceful shutdown in progress", | |
2610 | #ifdef WSAENOMORE | |
2611 | WSAENOMORE , "No more operations allowed", /* not sure */ | |
2612 | WSAECANCELLED , "Operation cancelled", /* not sure */ | |
2613 | WSAEINVALIDPROCTABLE , "Invalid procedure table from service provider", | |
2614 | WSAEINVALIDPROVIDER , "Invalid service provider version number", | |
2615 | WSAEPROVIDERFAILEDINIT , "Unable to initialize a service provider", | |
2616 | WSASYSCALLFAILURE , "System call failured", | |
2617 | WSASERVICE_NOT_FOUND , "Service not found", /* not sure */ | |
2618 | WSATYPE_NOT_FOUND , "Class type not found", | |
2619 | WSA_E_NO_MORE , "No more resources available", /* really not sure */ | |
2620 | WSA_E_CANCELLED , "Operation already cancelled", /* really not sure */ | |
2621 | WSAEREFUSED , "Operation refused", /* not sure */ | |
2622 | #endif | |
2623 | ||
2624 | WSAHOST_NOT_FOUND , "Host not found", | |
2625 | WSATRY_AGAIN , "Authoritative host not found during name lookup", | |
2626 | WSANO_RECOVERY , "Non-recoverable error during name lookup", | |
2627 | WSANO_DATA , "Valid name, no data record of requested type", | |
2628 | ||
2629 | -1, NULL | |
2630 | }; | |
2631 | ||
2632 | char * | |
2633 | sys_strerror(int error_no) | |
2634 | { | |
2635 | int i; | |
2636 | static char unknown_msg[40]; | |
2637 | ||
a302c7ae AI |
2638 | if (error_no >= 0 && error_no < sys_nerr) |
2639 | return sys_errlist[error_no]; | |
d8fcc1b9 AI |
2640 | |
2641 | for (i = 0; _wsa_errlist[i].errnum >= 0; i++) | |
2642 | if (_wsa_errlist[i].errnum == error_no) | |
2643 | return _wsa_errlist[i].msg; | |
2644 | ||
2645 | sprintf(unknown_msg, "Unidentified error: %d", error_no); | |
2646 | return unknown_msg; | |
2647 | } | |
2648 | ||
480b0c5b GV |
2649 | /* [andrewi 3-May-96] I've had conflicting results using both methods, |
2650 | but I believe the method of keeping the socket handle separate (and | |
2651 | insuring it is not inheritable) is the correct one. */ | |
2652 | ||
2653 | //#define SOCK_REPLACE_HANDLE | |
2654 | ||
2655 | #ifdef SOCK_REPLACE_HANDLE | |
2656 | #define SOCK_HANDLE(fd) ((SOCKET) _get_osfhandle (fd)) | |
2657 | #else | |
2658 | #define SOCK_HANDLE(fd) ((SOCKET) fd_info[fd].hnd) | |
2659 | #endif | |
2660 | ||
2661 | int | |
2662 | sys_socket(int af, int type, int protocol) | |
2663 | { | |
2664 | int fd; | |
2665 | long s; | |
2666 | child_process * cp; | |
2667 | ||
f249a012 | 2668 | if (winsock_lib == NULL) |
480b0c5b GV |
2669 | { |
2670 | h_errno = ENETDOWN; | |
2671 | return INVALID_SOCKET; | |
2672 | } | |
2673 | ||
2674 | check_errno (); | |
2675 | ||
2676 | /* call the real socket function */ | |
2677 | s = (long) pfn_socket (af, type, protocol); | |
2678 | ||
2679 | if (s != INVALID_SOCKET) | |
2680 | { | |
2681 | /* Although under NT 3.5 _open_osfhandle will accept a socket | |
2682 | handle, if opened with SO_OPENTYPE == SO_SYNCHRONOUS_NONALERT, | |
2683 | that does not work under NT 3.1. However, we can get the same | |
2684 | effect by using a backdoor function to replace an existing | |
2685 | descriptor handle with the one we want. */ | |
2686 | ||
2687 | /* allocate a file descriptor (with appropriate flags) */ | |
2688 | fd = _open ("NUL:", _O_RDWR); | |
2689 | if (fd >= 0) | |
2690 | { | |
2691 | #ifdef SOCK_REPLACE_HANDLE | |
2692 | /* now replace handle to NUL with our socket handle */ | |
2693 | CloseHandle ((HANDLE) _get_osfhandle (fd)); | |
2694 | _free_osfhnd (fd); | |
2695 | _set_osfhnd (fd, s); | |
2696 | /* setmode (fd, _O_BINARY); */ | |
2697 | #else | |
ca149beb AI |
2698 | /* Make a non-inheritable copy of the socket handle. Note |
2699 | that it is possible that sockets aren't actually kernel | |
2700 | handles, which appears to be the case on Windows 9x when | |
2701 | the MS Proxy winsock client is installed. */ | |
480b0c5b | 2702 | { |
f1614061 RS |
2703 | /* Apparently there is a bug in NT 3.51 with some service |
2704 | packs, which prevents using DuplicateHandle to make a | |
2705 | socket handle non-inheritable (causes WSACleanup to | |
2706 | hang). The work-around is to use SetHandleInformation | |
2707 | instead if it is available and implemented. */ | |
ca149beb AI |
2708 | if (pfn_SetHandleInformation) |
2709 | { | |
2710 | pfn_SetHandleInformation ((HANDLE) s, HANDLE_FLAG_INHERIT, 0); | |
2711 | } | |
2712 | else | |
f1614061 | 2713 | { |
ca149beb AI |
2714 | HANDLE parent = GetCurrentProcess (); |
2715 | HANDLE new_s = INVALID_HANDLE_VALUE; | |
2716 | ||
2717 | if (DuplicateHandle (parent, | |
2718 | (HANDLE) s, | |
2719 | parent, | |
2720 | &new_s, | |
2721 | 0, | |
2722 | FALSE, | |
2723 | DUPLICATE_SAME_ACCESS)) | |
2724 | { | |
2725 | /* It is possible that DuplicateHandle succeeds even | |
2726 | though the socket wasn't really a kernel handle, | |
2727 | because a real handle has the same value. So | |
2728 | test whether the new handle really is a socket. */ | |
2729 | long nonblocking = 0; | |
2730 | if (pfn_ioctlsocket ((SOCKET) new_s, FIONBIO, &nonblocking) == 0) | |
2731 | { | |
2732 | pfn_closesocket (s); | |
2733 | s = (SOCKET) new_s; | |
2734 | } | |
2735 | else | |
2736 | { | |
2737 | CloseHandle (new_s); | |
2738 | } | |
2739 | } | |
f1614061 | 2740 | } |
480b0c5b | 2741 | } |
ca149beb | 2742 | fd_info[fd].hnd = (HANDLE) s; |
480b0c5b GV |
2743 | #endif |
2744 | ||
2745 | /* set our own internal flags */ | |
2746 | fd_info[fd].flags = FILE_SOCKET | FILE_BINARY | FILE_READ | FILE_WRITE; | |
2747 | ||
2748 | cp = new_child (); | |
2749 | if (cp) | |
2750 | { | |
2751 | cp->fd = fd; | |
2752 | cp->status = STATUS_READ_ACKNOWLEDGED; | |
2753 | ||
2754 | /* attach child_process to fd_info */ | |
2755 | if (fd_info[ fd ].cp != NULL) | |
2756 | { | |
2757 | DebPrint (("sys_socket: fd_info[%d] apparently in use!\n", fd)); | |
2758 | abort (); | |
2759 | } | |
2760 | ||
2761 | fd_info[ fd ].cp = cp; | |
2762 | ||
2763 | /* success! */ | |
f249a012 | 2764 | winsock_inuse++; /* count open sockets */ |
480b0c5b GV |
2765 | return fd; |
2766 | } | |
2767 | ||
2768 | /* clean up */ | |
2769 | _close (fd); | |
2770 | } | |
2771 | pfn_closesocket (s); | |
2772 | h_errno = EMFILE; | |
2773 | } | |
2774 | set_errno (); | |
2775 | ||
2776 | return -1; | |
2777 | } | |
2778 | ||
2779 | ||
2780 | int | |
2781 | sys_bind (int s, const struct sockaddr * addr, int namelen) | |
2782 | { | |
f249a012 | 2783 | if (winsock_lib == NULL) |
480b0c5b GV |
2784 | { |
2785 | h_errno = ENOTSOCK; | |
2786 | return SOCKET_ERROR; | |
2787 | } | |
2788 | ||
2789 | check_errno (); | |
2790 | if (fd_info[s].flags & FILE_SOCKET) | |
2791 | { | |
2792 | int rc = pfn_bind (SOCK_HANDLE (s), addr, namelen); | |
2793 | if (rc == SOCKET_ERROR) | |
2794 | set_errno (); | |
2795 | return rc; | |
2796 | } | |
2797 | h_errno = ENOTSOCK; | |
2798 | return SOCKET_ERROR; | |
2799 | } | |
2800 | ||
2801 | ||
2802 | int | |
2803 | sys_connect (int s, const struct sockaddr * name, int namelen) | |
2804 | { | |
f249a012 | 2805 | if (winsock_lib == NULL) |
480b0c5b GV |
2806 | { |
2807 | h_errno = ENOTSOCK; | |
2808 | return SOCKET_ERROR; | |
2809 | } | |
2810 | ||
2811 | check_errno (); | |
2812 | if (fd_info[s].flags & FILE_SOCKET) | |
2813 | { | |
2814 | int rc = pfn_connect (SOCK_HANDLE (s), name, namelen); | |
2815 | if (rc == SOCKET_ERROR) | |
2816 | set_errno (); | |
2817 | return rc; | |
2818 | } | |
2819 | h_errno = ENOTSOCK; | |
2820 | return SOCKET_ERROR; | |
2821 | } | |
2822 | ||
2823 | u_short | |
2824 | sys_htons (u_short hostshort) | |
2825 | { | |
f249a012 | 2826 | return (winsock_lib != NULL) ? |
480b0c5b GV |
2827 | pfn_htons (hostshort) : hostshort; |
2828 | } | |
2829 | ||
2830 | u_short | |
2831 | sys_ntohs (u_short netshort) | |
2832 | { | |
f249a012 | 2833 | return (winsock_lib != NULL) ? |
480b0c5b GV |
2834 | pfn_ntohs (netshort) : netshort; |
2835 | } | |
2836 | ||
2837 | unsigned long | |
2838 | sys_inet_addr (const char * cp) | |
2839 | { | |
f249a012 | 2840 | return (winsock_lib != NULL) ? |
480b0c5b GV |
2841 | pfn_inet_addr (cp) : INADDR_NONE; |
2842 | } | |
2843 | ||
2844 | int | |
2845 | sys_gethostname (char * name, int namelen) | |
2846 | { | |
f249a012 | 2847 | if (winsock_lib != NULL) |
480b0c5b GV |
2848 | return pfn_gethostname (name, namelen); |
2849 | ||
2850 | if (namelen > MAX_COMPUTERNAME_LENGTH) | |
a302c7ae | 2851 | return !GetComputerName (name, (DWORD *)&namelen); |
480b0c5b GV |
2852 | |
2853 | h_errno = EFAULT; | |
2854 | return SOCKET_ERROR; | |
2855 | } | |
2856 | ||
2857 | struct hostent * | |
2858 | sys_gethostbyname(const char * name) | |
2859 | { | |
2860 | struct hostent * host; | |
2861 | ||
f249a012 | 2862 | if (winsock_lib == NULL) |
480b0c5b GV |
2863 | { |
2864 | h_errno = ENETDOWN; | |
2865 | return NULL; | |
2866 | } | |
2867 | ||
2868 | check_errno (); | |
2869 | host = pfn_gethostbyname (name); | |
2870 | if (!host) | |
2871 | set_errno (); | |
2872 | return host; | |
2873 | } | |
2874 | ||
2875 | struct servent * | |
2876 | sys_getservbyname(const char * name, const char * proto) | |
2877 | { | |
2878 | struct servent * serv; | |
2879 | ||
f249a012 | 2880 | if (winsock_lib == NULL) |
480b0c5b GV |
2881 | { |
2882 | h_errno = ENETDOWN; | |
2883 | return NULL; | |
2884 | } | |
2885 | ||
2886 | check_errno (); | |
2887 | serv = pfn_getservbyname (name, proto); | |
2888 | if (!serv) | |
2889 | set_errno (); | |
2890 | return serv; | |
2891 | } | |
2892 | ||
380961a6 GV |
2893 | int |
2894 | sys_shutdown (int s, int how) | |
2895 | { | |
380961a6 GV |
2896 | if (winsock_lib == NULL) |
2897 | { | |
2898 | h_errno = ENETDOWN; | |
2899 | return SOCKET_ERROR; | |
2900 | } | |
2901 | ||
2902 | check_errno (); | |
2903 | if (fd_info[s].flags & FILE_SOCKET) | |
2904 | { | |
2905 | int rc = pfn_shutdown (SOCK_HANDLE (s), how); | |
2906 | if (rc == SOCKET_ERROR) | |
2907 | set_errno (); | |
2908 | return rc; | |
2909 | } | |
2910 | h_errno = ENOTSOCK; | |
2911 | return SOCKET_ERROR; | |
2912 | } | |
2913 | ||
480b0c5b GV |
2914 | #endif /* HAVE_SOCKETS */ |
2915 | ||
2916 | ||
2917 | /* Shadow main io functions: we need to handle pipes and sockets more | |
2918 | intelligently, and implement non-blocking mode as well. */ | |
2919 | ||
2920 | int | |
2921 | sys_close (int fd) | |
2922 | { | |
2923 | int rc; | |
2924 | ||
2925 | if (fd < 0 || fd >= MAXDESC) | |
2926 | { | |
2927 | errno = EBADF; | |
2928 | return -1; | |
2929 | } | |
2930 | ||
2931 | if (fd_info[fd].cp) | |
2932 | { | |
2933 | child_process * cp = fd_info[fd].cp; | |
2934 | ||
2935 | fd_info[fd].cp = NULL; | |
2936 | ||
2937 | if (CHILD_ACTIVE (cp)) | |
2938 | { | |
2939 | /* if last descriptor to active child_process then cleanup */ | |
2940 | int i; | |
2941 | for (i = 0; i < MAXDESC; i++) | |
2942 | { | |
2943 | if (i == fd) | |
2944 | continue; | |
2945 | if (fd_info[i].cp == cp) | |
2946 | break; | |
2947 | } | |
2948 | if (i == MAXDESC) | |
2949 | { | |
f249a012 | 2950 | #ifdef HAVE_SOCKETS |
480b0c5b GV |
2951 | if (fd_info[fd].flags & FILE_SOCKET) |
2952 | { | |
f249a012 RS |
2953 | #ifndef SOCK_REPLACE_HANDLE |
2954 | if (winsock_lib == NULL) abort (); | |
480b0c5b GV |
2955 | |
2956 | pfn_shutdown (SOCK_HANDLE (fd), 2); | |
2957 | rc = pfn_closesocket (SOCK_HANDLE (fd)); | |
f249a012 RS |
2958 | #endif |
2959 | winsock_inuse--; /* count open sockets */ | |
480b0c5b GV |
2960 | } |
2961 | #endif | |
2962 | delete_child (cp); | |
2963 | } | |
2964 | } | |
2965 | } | |
2966 | ||
2967 | /* Note that sockets do not need special treatment here (at least on | |
e9e23e23 | 2968 | NT and Windows 95 using the standard tcp/ip stacks) - it appears that |
480b0c5b GV |
2969 | closesocket is equivalent to CloseHandle, which is to be expected |
2970 | because socket handles are fully fledged kernel handles. */ | |
2971 | rc = _close (fd); | |
2972 | ||
2973 | if (rc == 0) | |
2974 | fd_info[fd].flags = 0; | |
2975 | ||
2976 | return rc; | |
2977 | } | |
2978 | ||
2979 | int | |
2980 | sys_dup (int fd) | |
2981 | { | |
2982 | int new_fd; | |
2983 | ||
2984 | new_fd = _dup (fd); | |
2985 | if (new_fd >= 0) | |
2986 | { | |
2987 | /* duplicate our internal info as well */ | |
2988 | fd_info[new_fd] = fd_info[fd]; | |
2989 | } | |
2990 | return new_fd; | |
2991 | } | |
2992 | ||
2993 | ||
2994 | int | |
2995 | sys_dup2 (int src, int dst) | |
2996 | { | |
2997 | int rc; | |
2998 | ||
2999 | if (dst < 0 || dst >= MAXDESC) | |
3000 | { | |
3001 | errno = EBADF; | |
3002 | return -1; | |
3003 | } | |
3004 | ||
3005 | /* make sure we close the destination first if it's a pipe or socket */ | |
3006 | if (src != dst && fd_info[dst].flags != 0) | |
3007 | sys_close (dst); | |
3008 | ||
3009 | rc = _dup2 (src, dst); | |
3010 | if (rc == 0) | |
3011 | { | |
3012 | /* duplicate our internal info as well */ | |
3013 | fd_info[dst] = fd_info[src]; | |
3014 | } | |
3015 | return rc; | |
3016 | } | |
3017 | ||
480b0c5b GV |
3018 | /* Unix pipe() has only one arg */ |
3019 | int | |
3020 | sys_pipe (int * phandles) | |
3021 | { | |
3022 | int rc; | |
3023 | unsigned flags; | |
480b0c5b | 3024 | |
76b3903d GV |
3025 | /* make pipe handles non-inheritable; when we spawn a child, we |
3026 | replace the relevant handle with an inheritable one. Also put | |
3027 | pipes into binary mode; we will do text mode translation ourselves | |
3028 | if required. */ | |
3029 | rc = _pipe (phandles, 0, _O_NOINHERIT | _O_BINARY); | |
480b0c5b GV |
3030 | |
3031 | if (rc == 0) | |
3032 | { | |
7664e306 | 3033 | flags = FILE_PIPE | FILE_READ | FILE_BINARY; |
480b0c5b GV |
3034 | fd_info[phandles[0]].flags = flags; |
3035 | ||
7664e306 | 3036 | flags = FILE_PIPE | FILE_WRITE | FILE_BINARY; |
480b0c5b GV |
3037 | fd_info[phandles[1]].flags = flags; |
3038 | } | |
3039 | ||
3040 | return rc; | |
3041 | } | |
3042 | ||
f7554349 | 3043 | /* From ntproc.c */ |
fbd6baed | 3044 | extern Lisp_Object Vw32_pipe_read_delay; |
f7554349 | 3045 | |
480b0c5b GV |
3046 | /* Function to do blocking read of one byte, needed to implement |
3047 | select. It is only allowed on sockets and pipes. */ | |
3048 | int | |
3049 | _sys_read_ahead (int fd) | |
3050 | { | |
3051 | child_process * cp; | |
3052 | int rc; | |
3053 | ||
3054 | if (fd < 0 || fd >= MAXDESC) | |
3055 | return STATUS_READ_ERROR; | |
3056 | ||
3057 | cp = fd_info[fd].cp; | |
3058 | ||
3059 | if (cp == NULL || cp->fd != fd || cp->status != STATUS_READ_READY) | |
3060 | return STATUS_READ_ERROR; | |
3061 | ||
3062 | if ((fd_info[fd].flags & (FILE_PIPE | FILE_SOCKET)) == 0 | |
3063 | || (fd_info[fd].flags & FILE_READ) == 0) | |
3064 | { | |
3065 | DebPrint (("_sys_read_ahead: internal error: fd %d is not a pipe or socket!\n", fd)); | |
3066 | abort (); | |
3067 | } | |
3068 | ||
3069 | cp->status = STATUS_READ_IN_PROGRESS; | |
3070 | ||
3071 | if (fd_info[fd].flags & FILE_PIPE) | |
f7554349 | 3072 | { |
f7554349 KH |
3073 | rc = _read (fd, &cp->chr, sizeof (char)); |
3074 | ||
3075 | /* Give subprocess time to buffer some more output for us before | |
e9e23e23 | 3076 | reporting that input is available; we need this because Windows 95 |
f7554349 KH |
3077 | connects DOS programs to pipes by making the pipe appear to be |
3078 | the normal console stdout - as a result most DOS programs will | |
3079 | write to stdout without buffering, ie. one character at a | |
fbd6baed | 3080 | time. Even some W32 programs do this - "dir" in a command |
f7554349 KH |
3081 | shell on NT is very slow if we don't do this. */ |
3082 | if (rc > 0) | |
3083 | { | |
fbd6baed | 3084 | int wait = XINT (Vw32_pipe_read_delay); |
f7554349 KH |
3085 | |
3086 | if (wait > 0) | |
3087 | Sleep (wait); | |
3088 | else if (wait < 0) | |
3089 | while (++wait <= 0) | |
3090 | /* Yield remainder of our time slice, effectively giving a | |
3091 | temporary priority boost to the child process. */ | |
3092 | Sleep (0); | |
3093 | } | |
3094 | } | |
480b0c5b GV |
3095 | #ifdef HAVE_SOCKETS |
3096 | else if (fd_info[fd].flags & FILE_SOCKET) | |
3097 | rc = pfn_recv (SOCK_HANDLE (fd), &cp->chr, sizeof (char), 0); | |
3098 | #endif | |
3099 | ||
3100 | if (rc == sizeof (char)) | |
3101 | cp->status = STATUS_READ_SUCCEEDED; | |
3102 | else | |
3103 | cp->status = STATUS_READ_FAILED; | |
3104 | ||
3105 | return cp->status; | |
3106 | } | |
3107 | ||
3108 | int | |
3109 | sys_read (int fd, char * buffer, unsigned int count) | |
3110 | { | |
3111 | int nchars; | |
480b0c5b GV |
3112 | int to_read; |
3113 | DWORD waiting; | |
76b3903d | 3114 | char * orig_buffer = buffer; |
480b0c5b GV |
3115 | |
3116 | if (fd < 0 || fd >= MAXDESC) | |
3117 | { | |
3118 | errno = EBADF; | |
3119 | return -1; | |
3120 | } | |
3121 | ||
3122 | if (fd_info[fd].flags & (FILE_PIPE | FILE_SOCKET)) | |
3123 | { | |
3124 | child_process *cp = fd_info[fd].cp; | |
3125 | ||
3126 | if ((fd_info[fd].flags & FILE_READ) == 0) | |
3127 | { | |
3128 | errno = EBADF; | |
3129 | return -1; | |
3130 | } | |
3131 | ||
76b3903d GV |
3132 | nchars = 0; |
3133 | ||
3134 | /* re-read CR carried over from last read */ | |
3135 | if (fd_info[fd].flags & FILE_LAST_CR) | |
3136 | { | |
3137 | if (fd_info[fd].flags & FILE_BINARY) abort (); | |
3138 | *buffer++ = 0x0d; | |
3139 | count--; | |
3140 | nchars++; | |
f52eb3ef | 3141 | fd_info[fd].flags &= ~FILE_LAST_CR; |
76b3903d GV |
3142 | } |
3143 | ||
480b0c5b GV |
3144 | /* presence of a child_process structure means we are operating in |
3145 | non-blocking mode - otherwise we just call _read directly. | |
3146 | Note that the child_process structure might be missing because | |
3147 | reap_subprocess has been called; in this case the pipe is | |
3148 | already broken, so calling _read on it is okay. */ | |
3149 | if (cp) | |
3150 | { | |
3151 | int current_status = cp->status; | |
3152 | ||
3153 | switch (current_status) | |
3154 | { | |
3155 | case STATUS_READ_FAILED: | |
3156 | case STATUS_READ_ERROR: | |
f52eb3ef GV |
3157 | /* report normal EOF if nothing in buffer */ |
3158 | if (nchars <= 0) | |
3159 | fd_info[fd].flags |= FILE_AT_EOF; | |
3160 | return nchars; | |
480b0c5b GV |
3161 | |
3162 | case STATUS_READ_READY: | |
3163 | case STATUS_READ_IN_PROGRESS: | |
3164 | DebPrint (("sys_read called when read is in progress\n")); | |
3165 | errno = EWOULDBLOCK; | |
3166 | return -1; | |
3167 | ||
3168 | case STATUS_READ_SUCCEEDED: | |
3169 | /* consume read-ahead char */ | |
3170 | *buffer++ = cp->chr; | |
3171 | count--; | |
76b3903d | 3172 | nchars++; |
480b0c5b GV |
3173 | cp->status = STATUS_READ_ACKNOWLEDGED; |
3174 | ResetEvent (cp->char_avail); | |
3175 | ||
3176 | case STATUS_READ_ACKNOWLEDGED: | |
3177 | break; | |
3178 | ||
3179 | default: | |
3180 | DebPrint (("sys_read: bad status %d\n", current_status)); | |
3181 | errno = EBADF; | |
3182 | return -1; | |
3183 | } | |
3184 | ||
3185 | if (fd_info[fd].flags & FILE_PIPE) | |
3186 | { | |
3187 | PeekNamedPipe ((HANDLE) _get_osfhandle (fd), NULL, 0, NULL, &waiting, NULL); | |
3188 | to_read = min (waiting, (DWORD) count); | |
f52eb3ef GV |
3189 | |
3190 | if (to_read > 0) | |
3191 | nchars += _read (fd, buffer, to_read); | |
480b0c5b GV |
3192 | } |
3193 | #ifdef HAVE_SOCKETS | |
3194 | else /* FILE_SOCKET */ | |
3195 | { | |
f249a012 | 3196 | if (winsock_lib == NULL) abort (); |
480b0c5b GV |
3197 | |
3198 | /* do the equivalent of a non-blocking read */ | |
3199 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONREAD, &waiting); | |
76b3903d | 3200 | if (waiting == 0 && nchars == 0) |
480b0c5b GV |
3201 | { |
3202 | h_errno = errno = EWOULDBLOCK; | |
3203 | return -1; | |
3204 | } | |
3205 | ||
480b0c5b GV |
3206 | if (waiting) |
3207 | { | |
3208 | /* always use binary mode for sockets */ | |
76b3903d GV |
3209 | int res = pfn_recv (SOCK_HANDLE (fd), buffer, count, 0); |
3210 | if (res == SOCKET_ERROR) | |
480b0c5b GV |
3211 | { |
3212 | DebPrint(("sys_read.recv failed with error %d on socket %ld\n", | |
3213 | pfn_WSAGetLastError (), SOCK_HANDLE (fd))); | |
76b3903d GV |
3214 | set_errno (); |
3215 | return -1; | |
480b0c5b | 3216 | } |
76b3903d | 3217 | nchars += res; |
480b0c5b GV |
3218 | } |
3219 | } | |
3220 | #endif | |
3221 | } | |
3222 | else | |
f52eb3ef GV |
3223 | { |
3224 | int nread = _read (fd, buffer, count); | |
3225 | if (nread >= 0) | |
3226 | nchars += nread; | |
3227 | else if (nchars == 0) | |
3228 | nchars = nread; | |
3229 | } | |
76b3903d | 3230 | |
f52eb3ef GV |
3231 | if (nchars <= 0) |
3232 | fd_info[fd].flags |= FILE_AT_EOF; | |
76b3903d | 3233 | /* Perform text mode translation if required. */ |
f52eb3ef | 3234 | else if ((fd_info[fd].flags & FILE_BINARY) == 0) |
76b3903d GV |
3235 | { |
3236 | nchars = crlf_to_lf (nchars, orig_buffer); | |
3237 | /* If buffer contains only CR, return that. To be absolutely | |
3238 | sure we should attempt to read the next char, but in | |
3239 | practice a CR to be followed by LF would not appear by | |
3240 | itself in the buffer. */ | |
3241 | if (nchars > 1 && orig_buffer[nchars - 1] == 0x0d) | |
3242 | { | |
3243 | fd_info[fd].flags |= FILE_LAST_CR; | |
3244 | nchars--; | |
3245 | } | |
76b3903d | 3246 | } |
480b0c5b GV |
3247 | } |
3248 | else | |
3249 | nchars = _read (fd, buffer, count); | |
3250 | ||
76b3903d | 3251 | return nchars; |
480b0c5b GV |
3252 | } |
3253 | ||
3254 | /* For now, don't bother with a non-blocking mode */ | |
3255 | int | |
3256 | sys_write (int fd, const void * buffer, unsigned int count) | |
3257 | { | |
3258 | int nchars; | |
3259 | ||
3260 | if (fd < 0 || fd >= MAXDESC) | |
3261 | { | |
3262 | errno = EBADF; | |
3263 | return -1; | |
3264 | } | |
3265 | ||
3266 | if (fd_info[fd].flags & (FILE_PIPE | FILE_SOCKET)) | |
76b3903d GV |
3267 | { |
3268 | if ((fd_info[fd].flags & FILE_WRITE) == 0) | |
3269 | { | |
3270 | errno = EBADF; | |
3271 | return -1; | |
3272 | } | |
3273 | ||
3274 | /* Perform text mode translation if required. */ | |
3275 | if ((fd_info[fd].flags & FILE_BINARY) == 0) | |
3276 | { | |
3277 | char * tmpbuf = alloca (count * 2); | |
3278 | unsigned char * src = (void *)buffer; | |
3279 | unsigned char * dst = tmpbuf; | |
3280 | int nbytes = count; | |
3281 | ||
3282 | while (1) | |
3283 | { | |
3284 | unsigned char *next; | |
3285 | /* copy next line or remaining bytes */ | |
3286 | next = _memccpy (dst, src, '\n', nbytes); | |
3287 | if (next) | |
3288 | { | |
3289 | /* copied one line ending with '\n' */ | |
3290 | int copied = next - dst; | |
3291 | nbytes -= copied; | |
3292 | src += copied; | |
3293 | /* insert '\r' before '\n' */ | |
3294 | next[-1] = '\r'; | |
3295 | next[0] = '\n'; | |
3296 | dst = next + 1; | |
3297 | count++; | |
3298 | } | |
3299 | else | |
3300 | /* copied remaining partial line -> now finished */ | |
3301 | break; | |
3302 | } | |
3303 | buffer = tmpbuf; | |
3304 | } | |
3305 | } | |
3306 | ||
480b0c5b GV |
3307 | #ifdef HAVE_SOCKETS |
3308 | if (fd_info[fd].flags & FILE_SOCKET) | |
3309 | { | |
f249a012 | 3310 | if (winsock_lib == NULL) abort (); |
480b0c5b GV |
3311 | nchars = pfn_send (SOCK_HANDLE (fd), buffer, count, 0); |
3312 | if (nchars == SOCKET_ERROR) | |
3313 | { | |
3314 | DebPrint(("sys_read.send failed with error %d on socket %ld\n", | |
3315 | pfn_WSAGetLastError (), SOCK_HANDLE (fd))); | |
3316 | set_errno (); | |
3317 | } | |
3318 | } | |
3319 | else | |
3320 | #endif | |
3321 | nchars = _write (fd, buffer, count); | |
3322 | ||
3323 | return nchars; | |
3324 | } | |
3325 | ||
f52eb3ef GV |
3326 | static void |
3327 | check_windows_init_file () | |
3328 | { | |
3329 | extern int noninteractive, inhibit_window_system; | |
3330 | ||
3331 | /* A common indication that Emacs is not installed properly is when | |
3332 | it cannot find the Windows installation file. If this file does | |
3333 | not exist in the expected place, tell the user. */ | |
3334 | ||
d54abccd GV |
3335 | if (!noninteractive && !inhibit_window_system) |
3336 | { | |
3337 | extern Lisp_Object Vwindow_system, Vload_path, Qfile_exists_p; | |
a0b9c838 | 3338 | Lisp_Object objs[2]; |
96ef7d42 | 3339 | Lisp_Object full_load_path; |
d54abccd GV |
3340 | Lisp_Object init_file; |
3341 | int fd; | |
f52eb3ef | 3342 | |
a0b9c838 GV |
3343 | objs[0] = Vload_path; |
3344 | objs[1] = decode_env_path (0, (getenv ("EMACSLOADPATH"))); | |
3345 | full_load_path = Fappend (2, objs); | |
d54abccd | 3346 | init_file = build_string ("term/w32-win"); |
c0ec53ad | 3347 | fd = openp (full_load_path, init_file, Vload_suffixes, NULL, 0); |
d54abccd GV |
3348 | if (fd < 0) |
3349 | { | |
96ef7d42 | 3350 | Lisp_Object load_path_print = Fprin1_to_string (full_load_path, Qnil); |
d54abccd GV |
3351 | char *init_file_name = XSTRING (init_file)->data; |
3352 | char *load_path = XSTRING (load_path_print)->data; | |
3353 | char *buffer = alloca (1024); | |
3354 | ||
3355 | sprintf (buffer, | |
3356 | "The Emacs Windows initialization file \"%s.el\" " | |
3357 | "could not be found in your Emacs installation. " | |
3358 | "Emacs checked the following directories for this file:\n" | |
3359 | "\n%s\n\n" | |
3360 | "When Emacs cannot find this file, it usually means that it " | |
3361 | "was not installed properly, or its distribution file was " | |
3362 | "not unpacked properly.\nSee the README.W32 file in the " | |
3363 | "top-level Emacs directory for more information.", | |
3364 | init_file_name, load_path); | |
3365 | MessageBox (NULL, | |
3366 | buffer, | |
3367 | "Emacs Abort Dialog", | |
3368 | MB_OK | MB_ICONEXCLAMATION | MB_TASKMODAL); | |
f52eb3ef GV |
3369 | /* Use the low-level Emacs abort. */ |
3370 | #undef abort | |
d54abccd GV |
3371 | abort (); |
3372 | } | |
3373 | else | |
3374 | { | |
a302c7ae | 3375 | _close (fd); |
d54abccd | 3376 | } |
f52eb3ef | 3377 | } |
f52eb3ef | 3378 | } |
480b0c5b GV |
3379 | |
3380 | void | |
3381 | term_ntproc () | |
3382 | { | |
3383 | #ifdef HAVE_SOCKETS | |
3384 | /* shutdown the socket interface if necessary */ | |
3385 | term_winsock (); | |
3386 | #endif | |
3387 | } | |
3388 | ||
3389 | void | |
3390 | init_ntproc () | |
3391 | { | |
3392 | #ifdef HAVE_SOCKETS | |
f249a012 RS |
3393 | /* Initialise the socket interface now if available and requested by |
3394 | the user by defining PRELOAD_WINSOCK; otherwise loading will be | |
fbd6baed | 3395 | delayed until open-network-stream is called (w32-has-winsock can |
f249a012 RS |
3396 | also be used to dynamically load or reload winsock). |
3397 | ||
3398 | Conveniently, init_environment is called before us, so | |
3399 | PRELOAD_WINSOCK can be set in the registry. */ | |
3400 | ||
3401 | /* Always initialize this correctly. */ | |
3402 | winsock_lib = NULL; | |
3403 | ||
3404 | if (getenv ("PRELOAD_WINSOCK") != NULL) | |
3405 | init_winsock (TRUE); | |
480b0c5b GV |
3406 | #endif |
3407 | ||
3408 | /* Initial preparation for subprocess support: replace our standard | |
3409 | handles with non-inheritable versions. */ | |
3410 | { | |
3411 | HANDLE parent; | |
3412 | HANDLE stdin_save = INVALID_HANDLE_VALUE; | |
3413 | HANDLE stdout_save = INVALID_HANDLE_VALUE; | |
3414 | HANDLE stderr_save = INVALID_HANDLE_VALUE; | |
3415 | ||
3416 | parent = GetCurrentProcess (); | |
3417 | ||
3418 | /* ignore errors when duplicating and closing; typically the | |
3419 | handles will be invalid when running as a gui program. */ | |
3420 | DuplicateHandle (parent, | |
3421 | GetStdHandle (STD_INPUT_HANDLE), | |
3422 | parent, | |
3423 | &stdin_save, | |
3424 | 0, | |
3425 | FALSE, | |
3426 | DUPLICATE_SAME_ACCESS); | |
3427 | ||
3428 | DuplicateHandle (parent, | |
3429 | GetStdHandle (STD_OUTPUT_HANDLE), | |
3430 | parent, | |
3431 | &stdout_save, | |
3432 | 0, | |
3433 | FALSE, | |
3434 | DUPLICATE_SAME_ACCESS); | |
3435 | ||
3436 | DuplicateHandle (parent, | |
3437 | GetStdHandle (STD_ERROR_HANDLE), | |
3438 | parent, | |
3439 | &stderr_save, | |
3440 | 0, | |
3441 | FALSE, | |
3442 | DUPLICATE_SAME_ACCESS); | |
3443 | ||
3444 | fclose (stdin); | |
3445 | fclose (stdout); | |
3446 | fclose (stderr); | |
3447 | ||
3448 | if (stdin_save != INVALID_HANDLE_VALUE) | |
3449 | _open_osfhandle ((long) stdin_save, O_TEXT); | |
3450 | else | |
76b3903d GV |
3451 | _open ("nul", O_TEXT | O_NOINHERIT | O_RDONLY); |
3452 | _fdopen (0, "r"); | |
480b0c5b GV |
3453 | |
3454 | if (stdout_save != INVALID_HANDLE_VALUE) | |
3455 | _open_osfhandle ((long) stdout_save, O_TEXT); | |
3456 | else | |
76b3903d GV |
3457 | _open ("nul", O_TEXT | O_NOINHERIT | O_WRONLY); |
3458 | _fdopen (1, "w"); | |
480b0c5b GV |
3459 | |
3460 | if (stderr_save != INVALID_HANDLE_VALUE) | |
3461 | _open_osfhandle ((long) stderr_save, O_TEXT); | |
3462 | else | |
76b3903d GV |
3463 | _open ("nul", O_TEXT | O_NOINHERIT | O_WRONLY); |
3464 | _fdopen (2, "w"); | |
480b0c5b GV |
3465 | } |
3466 | ||
3467 | /* unfortunately, atexit depends on implementation of malloc */ | |
3468 | /* atexit (term_ntproc); */ | |
3469 | signal (SIGABRT, term_ntproc); | |
76b3903d GV |
3470 | |
3471 | /* determine which drives are fixed, for GetCachedVolumeInformation */ | |
3472 | { | |
3473 | /* GetDriveType must have trailing backslash. */ | |
3474 | char drive[] = "A:\\"; | |
3475 | ||
3476 | /* Loop over all possible drive letters */ | |
3477 | while (*drive <= 'Z') | |
3478 | { | |
3479 | /* Record if this drive letter refers to a fixed drive. */ | |
3480 | fixed_drives[DRIVE_INDEX (*drive)] = | |
3481 | (GetDriveType (drive) == DRIVE_FIXED); | |
3482 | ||
3483 | (*drive)++; | |
3484 | } | |
a302c7ae AI |
3485 | |
3486 | /* Reset the volume info cache. */ | |
3487 | volume_cache = NULL; | |
76b3903d | 3488 | } |
d54abccd GV |
3489 | |
3490 | /* Check to see if Emacs has been installed correctly. */ | |
3491 | check_windows_init_file (); | |
480b0c5b GV |
3492 | } |
3493 | ||
3494 | /* end of nt.c */ |