Commit | Line | Data |
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95ed0025 | 1 | /* Utility and Unix shadow routines for GNU Emacs on Windows NT. |
35f0d482 | 2 | Copyright (C) 1994, 1995 Free Software Foundation, Inc. |
95ed0025 | 3 | |
3b7ad313 EN |
4 | This file is part of GNU Emacs. |
5 | ||
6 | GNU Emacs is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2, or (at your option) | |
9 | any later version. | |
10 | ||
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Emacs; see the file COPYING. If not, write to | |
18 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
19 | Boston, MA 02111-1307, USA. | |
95ed0025 RS |
20 | |
21 | Geoff Voelker (voelker@cs.washington.edu) 7-29-94 | |
22 | */ | |
23 | ||
00b3b7b3 | 24 | |
95ed0025 RS |
25 | #include <stdlib.h> |
26 | #include <stdio.h> | |
27 | #include <io.h> | |
480b0c5b | 28 | #include <errno.h> |
95ed0025 RS |
29 | #include <fcntl.h> |
30 | #include <ctype.h> | |
480b0c5b GV |
31 | #include <signal.h> |
32 | #include <sys/time.h> | |
33 | ||
34 | /* must include CRT headers *before* config.h */ | |
35 | #include "config.h" | |
36 | #undef access | |
37 | #undef chdir | |
38 | #undef chmod | |
39 | #undef creat | |
40 | #undef ctime | |
41 | #undef fopen | |
42 | #undef link | |
43 | #undef mkdir | |
44 | #undef mktemp | |
45 | #undef open | |
46 | #undef rename | |
47 | #undef rmdir | |
48 | #undef unlink | |
49 | ||
50 | #undef close | |
51 | #undef dup | |
52 | #undef dup2 | |
53 | #undef pipe | |
54 | #undef read | |
55 | #undef write | |
95ed0025 | 56 | |
95ed0025 RS |
57 | #define getwd _getwd |
58 | #include "lisp.h" | |
59 | #undef getwd | |
60 | ||
61 | #include <pwd.h> | |
62 | ||
480b0c5b | 63 | #include <windows.h> |
00b3b7b3 | 64 | |
480b0c5b GV |
65 | #ifdef HAVE_SOCKETS /* TCP connection support, if kernel can do it */ |
66 | #include <sys/socket.h> | |
67 | #undef socket | |
68 | #undef bind | |
69 | #undef connect | |
70 | #undef htons | |
71 | #undef ntohs | |
72 | #undef inet_addr | |
73 | #undef gethostname | |
74 | #undef gethostbyname | |
75 | #undef getservbyname | |
76 | #endif | |
00b3b7b3 | 77 | |
480b0c5b GV |
78 | #include "nt.h" |
79 | #include "ndir.h" | |
80 | #include "ntheap.h" | |
00b3b7b3 | 81 | |
95ed0025 | 82 | /* Get the current working directory. */ |
480b0c5b | 83 | char * |
95ed0025 RS |
84 | getwd (char *dir) |
85 | { | |
480b0c5b GV |
86 | if (GetCurrentDirectory (MAXPATHLEN, dir) > 0) |
87 | return dir; | |
88 | return NULL; | |
95ed0025 RS |
89 | } |
90 | ||
480b0c5b | 91 | #ifndef HAVE_SOCKETS |
95ed0025 RS |
92 | /* Emulate gethostname. */ |
93 | int | |
94 | gethostname (char *buffer, int size) | |
95 | { | |
96 | /* NT only allows small host names, so the buffer is | |
97 | certainly large enough. */ | |
98 | return !GetComputerName (buffer, &size); | |
99 | } | |
480b0c5b | 100 | #endif /* HAVE_SOCKETS */ |
95ed0025 RS |
101 | |
102 | /* Emulate getloadavg. */ | |
103 | int | |
104 | getloadavg (double loadavg[], int nelem) | |
105 | { | |
106 | int i; | |
107 | ||
108 | /* A faithful emulation is going to have to be saved for a rainy day. */ | |
109 | for (i = 0; i < nelem; i++) | |
110 | { | |
111 | loadavg[i] = 0.0; | |
112 | } | |
113 | return i; | |
114 | } | |
115 | ||
95ed0025 RS |
116 | /* Emulate the Unix directory procedures opendir, closedir, |
117 | and readdir. We can't use the procedures supplied in sysdep.c, | |
118 | so we provide them here. */ | |
119 | ||
120 | struct direct dir_static; /* simulated directory contents */ | |
480b0c5b GV |
121 | static HANDLE dir_find_handle = INVALID_HANDLE_VALUE; |
122 | static int dir_is_fat; | |
123 | static char dir_pathname[MAXPATHLEN+1]; | |
95ed0025 RS |
124 | |
125 | DIR * | |
126 | opendir (char *filename) | |
127 | { | |
128 | DIR *dirp; | |
129 | ||
130 | /* Opening is done by FindFirstFile. However, a read is inherent to | |
480b0c5b | 131 | this operation, so we defer the open until read time. */ |
95ed0025 | 132 | |
480b0c5b GV |
133 | if (!(dirp = (DIR *) malloc (sizeof (DIR)))) |
134 | return NULL; | |
135 | if (dir_find_handle != INVALID_HANDLE_VALUE) | |
136 | return NULL; | |
95ed0025 RS |
137 | |
138 | dirp->dd_fd = 0; | |
139 | dirp->dd_loc = 0; | |
140 | dirp->dd_size = 0; | |
141 | ||
480b0c5b GV |
142 | strncpy (dir_pathname, filename, MAXPATHLEN); |
143 | dir_pathname[MAXPATHLEN] = '\0'; | |
144 | dir_is_fat = is_fat_volume (filename, NULL); | |
145 | ||
95ed0025 RS |
146 | return dirp; |
147 | } | |
148 | ||
149 | void | |
150 | closedir (DIR *dirp) | |
151 | { | |
152 | /* If we have a find-handle open, close it. */ | |
480b0c5b | 153 | if (dir_find_handle != INVALID_HANDLE_VALUE) |
95ed0025 RS |
154 | { |
155 | FindClose (dir_find_handle); | |
480b0c5b | 156 | dir_find_handle = INVALID_HANDLE_VALUE; |
95ed0025 RS |
157 | } |
158 | xfree ((char *) dirp); | |
159 | } | |
160 | ||
161 | struct direct * | |
162 | readdir (DIR *dirp) | |
163 | { | |
164 | WIN32_FIND_DATA find_data; | |
165 | ||
166 | /* If we aren't dir_finding, do a find-first, otherwise do a find-next. */ | |
480b0c5b | 167 | if (dir_find_handle == INVALID_HANDLE_VALUE) |
95ed0025 RS |
168 | { |
169 | char filename[MAXNAMLEN + 3]; | |
170 | int ln; | |
171 | ||
480b0c5b GV |
172 | strcpy (filename, dir_pathname); |
173 | ln = strlen (filename) - 1; | |
174 | if (!IS_DIRECTORY_SEP (filename[ln])) | |
95ed0025 | 175 | strcat (filename, "\\"); |
480b0c5b | 176 | strcat (filename, "*"); |
95ed0025 RS |
177 | |
178 | dir_find_handle = FindFirstFile (filename, &find_data); | |
179 | ||
480b0c5b | 180 | if (dir_find_handle == INVALID_HANDLE_VALUE) |
95ed0025 | 181 | return NULL; |
480b0c5b GV |
182 | } |
183 | else | |
95ed0025 RS |
184 | { |
185 | if (!FindNextFile (dir_find_handle, &find_data)) | |
186 | return NULL; | |
187 | } | |
188 | ||
480b0c5b GV |
189 | /* Emacs never uses this value, so don't bother making it match |
190 | value returned by stat(). */ | |
95ed0025 RS |
191 | dir_static.d_ino = 1; |
192 | ||
193 | dir_static.d_reclen = sizeof (struct direct) - MAXNAMLEN + 3 + | |
194 | dir_static.d_namlen - dir_static.d_namlen % 4; | |
195 | ||
196 | dir_static.d_namlen = strlen (find_data.cFileName); | |
480b0c5b GV |
197 | strcpy (dir_static.d_name, find_data.cFileName); |
198 | if (dir_is_fat) | |
199 | _strlwr (dir_static.d_name); | |
95ed0025 RS |
200 | |
201 | return &dir_static; | |
202 | } | |
203 | ||
480b0c5b | 204 | /* Emulate getpwuid, getpwnam and others. */ |
95ed0025 | 205 | |
051fe60d GV |
206 | #define PASSWD_FIELD_SIZE 256 |
207 | ||
208 | static char the_passwd_name[PASSWD_FIELD_SIZE]; | |
209 | static char the_passwd_passwd[PASSWD_FIELD_SIZE]; | |
210 | static char the_passwd_gecos[PASSWD_FIELD_SIZE]; | |
211 | static char the_passwd_dir[PASSWD_FIELD_SIZE]; | |
212 | static char the_passwd_shell[PASSWD_FIELD_SIZE]; | |
95ed0025 RS |
213 | |
214 | static struct passwd the_passwd = | |
215 | { | |
216 | the_passwd_name, | |
217 | the_passwd_passwd, | |
218 | 0, | |
219 | 0, | |
220 | 0, | |
221 | the_passwd_gecos, | |
222 | the_passwd_dir, | |
223 | the_passwd_shell, | |
224 | }; | |
225 | ||
480b0c5b GV |
226 | int |
227 | getuid () | |
228 | { | |
229 | return the_passwd.pw_uid; | |
230 | } | |
231 | ||
232 | int | |
233 | geteuid () | |
234 | { | |
235 | /* I could imagine arguing for checking to see whether the user is | |
236 | in the Administrators group and returning a UID of 0 for that | |
237 | case, but I don't know how wise that would be in the long run. */ | |
238 | return getuid (); | |
239 | } | |
240 | ||
241 | int | |
242 | getgid () | |
243 | { | |
244 | return the_passwd.pw_gid; | |
245 | } | |
246 | ||
247 | int | |
248 | getegid () | |
249 | { | |
250 | return getgid (); | |
251 | } | |
252 | ||
95ed0025 RS |
253 | struct passwd * |
254 | getpwuid (int uid) | |
255 | { | |
480b0c5b GV |
256 | if (uid == the_passwd.pw_uid) |
257 | return &the_passwd; | |
258 | return NULL; | |
95ed0025 RS |
259 | } |
260 | ||
261 | struct passwd * | |
262 | getpwnam (char *name) | |
263 | { | |
264 | struct passwd *pw; | |
265 | ||
266 | pw = getpwuid (getuid ()); | |
267 | if (!pw) | |
268 | return pw; | |
269 | ||
480b0c5b | 270 | if (stricmp (name, pw->pw_name)) |
95ed0025 RS |
271 | return NULL; |
272 | ||
273 | return pw; | |
274 | } | |
275 | ||
480b0c5b GV |
276 | void |
277 | init_user_info () | |
95ed0025 | 278 | { |
480b0c5b GV |
279 | /* Find the user's real name by opening the process token and |
280 | looking up the name associated with the user-sid in that token. | |
281 | ||
282 | Use the relative portion of the identifier authority value from | |
283 | the user-sid as the user id value (same for group id using the | |
284 | primary group sid from the process token). */ | |
285 | ||
286 | char user_sid[256], name[256], domain[256]; | |
287 | DWORD length = sizeof (name), dlength = sizeof (domain), trash; | |
288 | HANDLE token = NULL; | |
289 | SID_NAME_USE user_type; | |
290 | ||
291 | if (OpenProcessToken (GetCurrentProcess (), TOKEN_QUERY, &token) | |
292 | && GetTokenInformation (token, TokenUser, | |
293 | (PVOID) user_sid, sizeof (user_sid), &trash) | |
294 | && LookupAccountSid (NULL, *((PSID *) user_sid), name, &length, | |
295 | domain, &dlength, &user_type)) | |
d1c1c3d2 | 296 | { |
480b0c5b GV |
297 | strcpy (the_passwd.pw_name, name); |
298 | /* Determine a reasonable uid value. */ | |
299 | if (stricmp ("administrator", name) == 0) | |
300 | { | |
301 | the_passwd.pw_uid = 0; | |
302 | the_passwd.pw_gid = 0; | |
303 | } | |
304 | else | |
305 | { | |
306 | SID_IDENTIFIER_AUTHORITY * pSIA; | |
307 | ||
308 | pSIA = GetSidIdentifierAuthority (*((PSID *) user_sid)); | |
309 | /* I believe the relative portion is the last 4 bytes (of 6) | |
310 | with msb first. */ | |
311 | the_passwd.pw_uid = ((pSIA->Value[2] << 24) + | |
312 | (pSIA->Value[3] << 16) + | |
313 | (pSIA->Value[4] << 8) + | |
314 | (pSIA->Value[5] << 0)); | |
315 | /* restrict to conventional uid range for normal users */ | |
316 | the_passwd.pw_uid = the_passwd.pw_uid % 60001; | |
317 | ||
318 | /* Get group id */ | |
319 | if (GetTokenInformation (token, TokenPrimaryGroup, | |
320 | (PVOID) user_sid, sizeof (user_sid), &trash)) | |
321 | { | |
322 | SID_IDENTIFIER_AUTHORITY * pSIA; | |
323 | ||
324 | pSIA = GetSidIdentifierAuthority (*((PSID *) user_sid)); | |
325 | the_passwd.pw_gid = ((pSIA->Value[2] << 24) + | |
326 | (pSIA->Value[3] << 16) + | |
327 | (pSIA->Value[4] << 8) + | |
328 | (pSIA->Value[5] << 0)); | |
329 | /* I don't know if this is necessary, but for safety... */ | |
330 | the_passwd.pw_gid = the_passwd.pw_gid % 60001; | |
331 | } | |
332 | else | |
333 | the_passwd.pw_gid = the_passwd.pw_uid; | |
334 | } | |
335 | } | |
336 | /* If security calls are not supported (presumably because we | |
337 | are running under Windows 95), fallback to this. */ | |
338 | else if (GetUserName (name, &length)) | |
339 | { | |
340 | strcpy (the_passwd.pw_name, name); | |
341 | if (stricmp ("administrator", name) == 0) | |
342 | the_passwd.pw_uid = 0; | |
343 | else | |
344 | the_passwd.pw_uid = 123; | |
345 | the_passwd.pw_gid = the_passwd.pw_uid; | |
346 | } | |
347 | else | |
348 | { | |
349 | strcpy (the_passwd.pw_name, "unknown"); | |
350 | the_passwd.pw_uid = 123; | |
351 | the_passwd.pw_gid = 123; | |
d1c1c3d2 | 352 | } |
95ed0025 | 353 | |
480b0c5b GV |
354 | /* Ensure HOME and SHELL are defined. */ |
355 | if (getenv ("HOME") == NULL) | |
356 | putenv ("HOME=c:/"); | |
357 | if (getenv ("SHELL") == NULL) | |
358 | putenv ((GetVersion () & 0x80000000) ? "SHELL=command" : "SHELL=cmd"); | |
95ed0025 | 359 | |
480b0c5b GV |
360 | /* Set dir and shell from environment variables. */ |
361 | strcpy (the_passwd.pw_dir, getenv ("HOME")); | |
362 | strcpy (the_passwd.pw_shell, getenv ("SHELL")); | |
bd4a449f | 363 | |
480b0c5b GV |
364 | if (token) |
365 | CloseHandle (token); | |
95ed0025 RS |
366 | } |
367 | ||
95ed0025 | 368 | int |
480b0c5b | 369 | random () |
95ed0025 | 370 | { |
480b0c5b GV |
371 | /* rand () on NT gives us 15 random bits...hack together 30 bits. */ |
372 | return ((rand () << 15) | rand ()); | |
95ed0025 RS |
373 | } |
374 | ||
95ed0025 | 375 | void |
480b0c5b | 376 | srandom (int seed) |
95ed0025 | 377 | { |
480b0c5b | 378 | srand (seed); |
95ed0025 RS |
379 | } |
380 | ||
480b0c5b | 381 | /* Destructively turn backslashes into slashes. */ |
95ed0025 | 382 | void |
480b0c5b GV |
383 | dostounix_filename (p) |
384 | register char *p; | |
95ed0025 | 385 | { |
480b0c5b GV |
386 | while (*p) |
387 | { | |
388 | if (*p == '\\') | |
389 | *p = '/'; | |
390 | p++; | |
391 | } | |
95ed0025 RS |
392 | } |
393 | ||
480b0c5b | 394 | /* Destructively turn slashes into backslashes. */ |
95ed0025 | 395 | void |
480b0c5b GV |
396 | unixtodos_filename (p) |
397 | register char *p; | |
95ed0025 | 398 | { |
480b0c5b | 399 | while (*p) |
95ed0025 | 400 | { |
480b0c5b GV |
401 | if (*p == '/') |
402 | *p = '\\'; | |
403 | p++; | |
95ed0025 RS |
404 | } |
405 | } | |
406 | ||
480b0c5b GV |
407 | /* Remove all CR's that are followed by a LF. |
408 | (From msdos.c...probably should figure out a way to share it, | |
409 | although this code isn't going to ever change.) */ | |
35f0d482 | 410 | int |
480b0c5b GV |
411 | crlf_to_lf (n, buf) |
412 | register int n; | |
413 | register unsigned char *buf; | |
35f0d482 | 414 | { |
480b0c5b GV |
415 | unsigned char *np = buf; |
416 | unsigned char *startp = buf; | |
417 | unsigned char *endp = buf + n; | |
35f0d482 | 418 | |
480b0c5b GV |
419 | if (n == 0) |
420 | return n; | |
421 | while (buf < endp - 1) | |
95ed0025 | 422 | { |
480b0c5b GV |
423 | if (*buf == 0x0d) |
424 | { | |
425 | if (*(++buf) != 0x0a) | |
426 | *np++ = 0x0d; | |
427 | } | |
428 | else | |
429 | *np++ = *buf++; | |
95ed0025 | 430 | } |
480b0c5b GV |
431 | if (buf < endp) |
432 | *np++ = *buf++; | |
433 | return np - startp; | |
95ed0025 RS |
434 | } |
435 | ||
436 | /* Routines that are no-ops on NT but are defined to get Emacs to compile. */ | |
437 | ||
95ed0025 RS |
438 | int |
439 | sigsetmask (int signal_mask) | |
440 | { | |
441 | return 0; | |
442 | } | |
443 | ||
444 | int | |
445 | sigblock (int sig) | |
446 | { | |
447 | return 0; | |
448 | } | |
449 | ||
95ed0025 RS |
450 | int |
451 | setpgrp (int pid, int gid) | |
452 | { | |
453 | return 0; | |
454 | } | |
455 | ||
456 | int | |
457 | alarm (int seconds) | |
458 | { | |
459 | return 0; | |
460 | } | |
461 | ||
462 | int | |
463 | unrequest_sigio (void) | |
464 | { | |
465 | return 0; | |
466 | } | |
467 | ||
468 | int | |
469 | request_sigio (void) | |
470 | { | |
471 | return 0; | |
472 | } | |
473 | ||
480b0c5b | 474 | #define REG_ROOT "SOFTWARE\\GNU\\Emacs" |
f332b293 GV |
475 | |
476 | LPBYTE | |
477 | nt_get_resource (key, lpdwtype) | |
478 | char *key; | |
479 | LPDWORD lpdwtype; | |
480 | { | |
481 | LPBYTE lpvalue; | |
482 | HKEY hrootkey = NULL; | |
483 | DWORD cbData; | |
484 | BOOL ok = FALSE; | |
485 | ||
486 | /* Check both the current user and the local machine to see if | |
487 | we have any resources. */ | |
488 | ||
489 | if (RegOpenKeyEx (HKEY_CURRENT_USER, REG_ROOT, 0, KEY_READ, &hrootkey) == ERROR_SUCCESS) | |
490 | { | |
491 | lpvalue = NULL; | |
492 | ||
493 | if (RegQueryValueEx (hrootkey, key, NULL, NULL, NULL, &cbData) == ERROR_SUCCESS | |
494 | && (lpvalue = (LPBYTE) xmalloc (cbData)) != NULL | |
495 | && RegQueryValueEx (hrootkey, key, NULL, lpdwtype, lpvalue, &cbData) == ERROR_SUCCESS) | |
496 | { | |
497 | return (lpvalue); | |
498 | } | |
499 | ||
500 | if (lpvalue) xfree (lpvalue); | |
501 | ||
502 | RegCloseKey (hrootkey); | |
503 | } | |
504 | ||
505 | if (RegOpenKeyEx (HKEY_LOCAL_MACHINE, REG_ROOT, 0, KEY_READ, &hrootkey) == ERROR_SUCCESS) | |
506 | { | |
507 | lpvalue = NULL; | |
508 | ||
509 | if (RegQueryValueEx (hrootkey, key, NULL, NULL, NULL, &cbData) == ERROR_SUCCESS && | |
510 | (lpvalue = (LPBYTE) xmalloc (cbData)) != NULL && | |
511 | RegQueryValueEx (hrootkey, key, NULL, lpdwtype, lpvalue, &cbData) == ERROR_SUCCESS) | |
512 | { | |
513 | return (lpvalue); | |
514 | } | |
515 | ||
516 | if (lpvalue) xfree (lpvalue); | |
517 | ||
518 | RegCloseKey (hrootkey); | |
519 | } | |
520 | ||
521 | return (NULL); | |
522 | } | |
523 | ||
524 | void | |
525 | init_environment () | |
526 | { | |
f332b293 GV |
527 | /* Check for environment variables and use registry if they don't exist */ |
528 | { | |
480b0c5b GV |
529 | int i; |
530 | LPBYTE lpval; | |
531 | DWORD dwType; | |
f332b293 | 532 | |
480b0c5b GV |
533 | static char * env_vars[] = |
534 | { | |
535 | "HOME", | |
536 | "emacs_dir", | |
537 | "EMACSLOADPATH", | |
538 | "SHELL", | |
539 | "EMACSDATA", | |
540 | "EMACSPATH", | |
541 | "EMACSLOCKDIR", | |
542 | "INFOPATH", | |
543 | "EMACSDOC", | |
544 | "TERM", | |
545 | }; | |
546 | ||
547 | for (i = 0; i < (sizeof (env_vars) / sizeof (env_vars[0])); i++) | |
f332b293 | 548 | { |
480b0c5b GV |
549 | if (!getenv (env_vars[i]) && |
550 | (lpval = nt_get_resource (env_vars[i], &dwType)) != NULL) | |
551 | { | |
552 | if (dwType == REG_EXPAND_SZ) | |
553 | { | |
554 | char buf1[500], buf2[500]; | |
555 | ||
556 | ExpandEnvironmentStrings ((LPSTR) lpval, buf1, 500); | |
557 | _snprintf (buf2, 499, "%s=%s", env_vars[i], buf1); | |
558 | putenv (strdup (buf2)); | |
559 | } | |
560 | else if (dwType == REG_SZ) | |
561 | { | |
562 | char buf[500]; | |
f332b293 | 563 | |
480b0c5b GV |
564 | _snprintf (buf, 499, "%s=%s", env_vars[i], lpval); |
565 | putenv (strdup (buf)); | |
566 | } | |
f332b293 | 567 | |
480b0c5b GV |
568 | xfree (lpval); |
569 | } | |
570 | } | |
571 | } | |
572 | ||
573 | init_user_info (); | |
574 | } | |
575 | ||
576 | /* We don't have scripts to automatically determine the system configuration | |
577 | for Emacs before it's compiled, and we don't want to have to make the | |
578 | user enter it, so we define EMACS_CONFIGURATION to invoke this runtime | |
579 | routine. */ | |
580 | ||
581 | static char configuration_buffer[32]; | |
582 | ||
583 | char * | |
584 | get_emacs_configuration (void) | |
585 | { | |
586 | char *arch, *oem, *os; | |
587 | ||
588 | /* Determine the processor type. */ | |
589 | switch (get_processor_type ()) | |
590 | { | |
591 | ||
592 | #ifdef PROCESSOR_INTEL_386 | |
593 | case PROCESSOR_INTEL_386: | |
594 | case PROCESSOR_INTEL_486: | |
595 | case PROCESSOR_INTEL_PENTIUM: | |
596 | arch = "i386"; | |
597 | break; | |
598 | #endif | |
599 | ||
600 | #ifdef PROCESSOR_INTEL_860 | |
601 | case PROCESSOR_INTEL_860: | |
602 | arch = "i860"; | |
603 | break; | |
604 | #endif | |
605 | ||
606 | #ifdef PROCESSOR_MIPS_R2000 | |
607 | case PROCESSOR_MIPS_R2000: | |
608 | case PROCESSOR_MIPS_R3000: | |
609 | case PROCESSOR_MIPS_R4000: | |
610 | arch = "mips"; | |
611 | break; | |
612 | #endif | |
613 | ||
614 | #ifdef PROCESSOR_ALPHA_21064 | |
615 | case PROCESSOR_ALPHA_21064: | |
616 | arch = "alpha"; | |
617 | break; | |
618 | #endif | |
619 | ||
620 | default: | |
621 | arch = "unknown"; | |
622 | break; | |
f332b293 | 623 | } |
480b0c5b GV |
624 | |
625 | /* Let oem be "*" until we figure out how to decode the OEM field. */ | |
626 | oem = "*"; | |
627 | ||
628 | os = (GetVersion () & 0x80000000) ? "win95" : "nt"; | |
629 | ||
630 | sprintf (configuration_buffer, "%s-%s-%s%d.%d", arch, oem, os, | |
631 | get_nt_major_version (), get_nt_minor_version ()); | |
632 | return configuration_buffer; | |
f332b293 GV |
633 | } |
634 | ||
35f0d482 KH |
635 | #include <sys/timeb.h> |
636 | ||
637 | /* Emulate gettimeofday (Ulrich Leodolter, 1/11/95). */ | |
638 | void | |
639 | gettimeofday (struct timeval *tv, struct timezone *tz) | |
640 | { | |
641 | struct _timeb tb; | |
642 | _ftime (&tb); | |
643 | ||
644 | tv->tv_sec = tb.time; | |
645 | tv->tv_usec = tb.millitm * 1000L; | |
646 | if (tz) | |
647 | { | |
648 | tz->tz_minuteswest = tb.timezone; /* minutes west of Greenwich */ | |
649 | tz->tz_dsttime = tb.dstflag; /* type of dst correction */ | |
650 | } | |
651 | } | |
35f0d482 | 652 | |
480b0c5b GV |
653 | /* ------------------------------------------------------------------------- */ |
654 | /* IO support and wrapper functions for Win32 API. */ | |
655 | /* ------------------------------------------------------------------------- */ | |
95ed0025 | 656 | |
480b0c5b GV |
657 | /* Place a wrapper around the MSVC version of ctime. It returns NULL |
658 | on network directories, so we handle that case here. | |
659 | (Ulrich Leodolter, 1/11/95). */ | |
660 | char * | |
661 | sys_ctime (const time_t *t) | |
662 | { | |
663 | char *str = (char *) ctime (t); | |
664 | return (str ? str : "Sun Jan 01 00:00:00 1970"); | |
665 | } | |
666 | ||
667 | /* Emulate sleep...we could have done this with a define, but that | |
668 | would necessitate including windows.h in the files that used it. | |
669 | This is much easier. */ | |
670 | void | |
671 | sys_sleep (int seconds) | |
672 | { | |
673 | Sleep (seconds * 1000); | |
674 | } | |
675 | ||
676 | /* Internal MSVC data and functions for low-level descriptor munging */ | |
677 | #if (_MSC_VER == 900) | |
678 | extern char _osfile[]; | |
679 | #endif | |
680 | extern int __cdecl _set_osfhnd (int fd, long h); | |
681 | extern int __cdecl _free_osfhnd (int fd); | |
682 | ||
683 | /* parallel array of private info on file handles */ | |
684 | filedesc fd_info [ MAXDESC ]; | |
685 | ||
686 | static struct { | |
687 | DWORD serialnum; | |
688 | DWORD maxcomp; | |
689 | DWORD flags; | |
690 | char name[32]; | |
691 | char type[32]; | |
692 | } volume_info; | |
693 | ||
694 | /* Get information on the volume where name is held; set path pointer to | |
695 | start of pathname in name (past UNC header\volume header if present). */ | |
696 | int | |
697 | get_volume_info (const char * name, const char ** pPath) | |
95ed0025 | 698 | { |
480b0c5b GV |
699 | char temp[MAX_PATH]; |
700 | char *rootname = NULL; /* default to current volume */ | |
701 | ||
702 | if (name == NULL) | |
703 | return FALSE; | |
704 | ||
705 | /* find the root name of the volume if given */ | |
706 | if (isalpha (name[0]) && name[1] == ':') | |
707 | { | |
708 | rootname = temp; | |
709 | temp[0] = *name++; | |
710 | temp[1] = *name++; | |
711 | temp[2] = '\\'; | |
712 | temp[3] = 0; | |
713 | } | |
714 | else if (IS_DIRECTORY_SEP (name[0]) && IS_DIRECTORY_SEP (name[1])) | |
95ed0025 | 715 | { |
480b0c5b GV |
716 | char *str = temp; |
717 | int slashes = 4; | |
718 | rootname = temp; | |
719 | do | |
720 | { | |
721 | if (IS_DIRECTORY_SEP (*name) && --slashes == 0) | |
722 | break; | |
723 | *str++ = *name++; | |
724 | } | |
725 | while ( *name ); | |
726 | ||
480b0c5b GV |
727 | *str++ = '\\'; |
728 | *str = 0; | |
95ed0025 | 729 | } |
480b0c5b GV |
730 | |
731 | if (pPath) | |
732 | *pPath = name; | |
733 | ||
734 | if (GetVolumeInformation (rootname, | |
735 | volume_info.name, 32, | |
736 | &volume_info.serialnum, | |
737 | &volume_info.maxcomp, | |
738 | &volume_info.flags, | |
739 | volume_info.type, 32)) | |
95ed0025 | 740 | { |
480b0c5b | 741 | return TRUE; |
95ed0025 | 742 | } |
480b0c5b GV |
743 | return FALSE; |
744 | } | |
745 | ||
746 | /* Determine if volume is FAT format (ie. only supports short 8.3 | |
747 | names); also set path pointer to start of pathname in name. */ | |
748 | int | |
749 | is_fat_volume (const char * name, const char ** pPath) | |
750 | { | |
751 | if (get_volume_info (name, pPath)) | |
752 | return (volume_info.maxcomp == 12); | |
753 | return FALSE; | |
754 | } | |
755 | ||
756 | /* Map filename to a legal 8.3 name if necessary. */ | |
757 | const char * | |
758 | map_win32_filename (const char * name, const char ** pPath) | |
759 | { | |
760 | static char shortname[MAX_PATH]; | |
761 | char * str = shortname; | |
762 | char c; | |
480b0c5b GV |
763 | char * path; |
764 | ||
765 | if (is_fat_volume (name, &path)) /* truncate to 8.3 */ | |
95ed0025 | 766 | { |
480b0c5b GV |
767 | register int left = 8; /* maximum number of chars in part */ |
768 | register int extn = 0; /* extension added? */ | |
769 | register int dots = 2; /* maximum number of dots allowed */ | |
770 | ||
771 | while (name < path) | |
772 | *str++ = *name++; /* skip past UNC header */ | |
773 | ||
774 | while ((c = *name++)) | |
775 | { | |
776 | switch ( c ) | |
777 | { | |
778 | case '\\': | |
779 | case '/': | |
780 | *str++ = '\\'; | |
781 | extn = 0; /* reset extension flags */ | |
782 | dots = 2; /* max 2 dots */ | |
783 | left = 8; /* max length 8 for main part */ | |
784 | break; | |
785 | case ':': | |
786 | *str++ = ':'; | |
787 | extn = 0; /* reset extension flags */ | |
788 | dots = 2; /* max 2 dots */ | |
789 | left = 8; /* max length 8 for main part */ | |
790 | break; | |
791 | case '.': | |
792 | if ( dots ) | |
793 | { | |
794 | /* Convert path components of the form .xxx to _xxx, | |
795 | but leave . and .. as they are. This allows .emacs | |
796 | to be read as _emacs, for example. */ | |
797 | ||
798 | if (! *name || | |
799 | *name == '.' || | |
800 | IS_DIRECTORY_SEP (*name)) | |
801 | { | |
802 | *str++ = '.'; | |
803 | dots--; | |
804 | } | |
805 | else | |
806 | { | |
807 | *str++ = '_'; | |
808 | left--; | |
809 | dots = 0; | |
810 | } | |
811 | } | |
812 | else if ( !extn ) | |
813 | { | |
814 | *str++ = '.'; | |
815 | extn = 1; /* we've got an extension */ | |
816 | left = 3; /* 3 chars in extension */ | |
817 | } | |
818 | else | |
819 | { | |
820 | /* any embedded dots after the first are converted to _ */ | |
821 | *str++ = '_'; | |
822 | } | |
823 | break; | |
824 | case '~': | |
825 | case '#': /* don't lose these, they're important */ | |
826 | if ( ! left ) | |
827 | str[-1] = c; /* replace last character of part */ | |
828 | /* FALLTHRU */ | |
829 | default: | |
830 | if ( left ) | |
831 | { | |
832 | *str++ = tolower (c); /* map to lower case (looks nicer) */ | |
833 | left--; | |
834 | dots = 0; /* started a path component */ | |
835 | } | |
836 | break; | |
837 | } | |
838 | } | |
839 | *str = '\0'; | |
fc85cb29 RS |
840 | } |
841 | else | |
842 | { | |
843 | strcpy (shortname, name); | |
844 | unixtodos_filename (shortname); | |
95ed0025 | 845 | } |
480b0c5b GV |
846 | |
847 | if (pPath) | |
fc85cb29 | 848 | *pPath = shortname + (path - name); |
480b0c5b | 849 | |
fc85cb29 | 850 | return shortname; |
480b0c5b GV |
851 | } |
852 | ||
853 | ||
854 | /* Shadow some MSVC runtime functions to map requests for long filenames | |
855 | to reasonable short names if necessary. This was originally added to | |
856 | permit running Emacs on NT 3.1 on a FAT partition, which doesn't support | |
857 | long file names. */ | |
858 | ||
859 | int | |
860 | sys_access (const char * path, int mode) | |
861 | { | |
862 | return _access (map_win32_filename (path, NULL), mode); | |
863 | } | |
864 | ||
865 | int | |
866 | sys_chdir (const char * path) | |
867 | { | |
868 | return _chdir (map_win32_filename (path, NULL)); | |
869 | } | |
870 | ||
871 | int | |
872 | sys_chmod (const char * path, int mode) | |
873 | { | |
874 | return _chmod (map_win32_filename (path, NULL), mode); | |
875 | } | |
876 | ||
877 | int | |
878 | sys_creat (const char * path, int mode) | |
879 | { | |
880 | return _creat (map_win32_filename (path, NULL), mode); | |
881 | } | |
882 | ||
883 | FILE * | |
884 | sys_fopen(const char * path, const char * mode) | |
885 | { | |
886 | int fd; | |
887 | int oflag; | |
888 | const char * mode_save = mode; | |
889 | ||
890 | /* Force all file handles to be non-inheritable. This is necessary to | |
891 | ensure child processes don't unwittingly inherit handles that might | |
892 | prevent future file access. */ | |
893 | ||
894 | if (mode[0] == 'r') | |
895 | oflag = O_RDONLY; | |
896 | else if (mode[0] == 'w' || mode[0] == 'a') | |
897 | oflag = O_WRONLY | O_CREAT | O_TRUNC; | |
95ed0025 | 898 | else |
480b0c5b GV |
899 | return NULL; |
900 | ||
901 | /* Only do simplistic option parsing. */ | |
902 | while (*++mode) | |
903 | if (mode[0] == '+') | |
904 | { | |
905 | oflag &= ~(O_RDONLY | O_WRONLY); | |
906 | oflag |= O_RDWR; | |
907 | } | |
908 | else if (mode[0] == 'b') | |
909 | { | |
910 | oflag &= ~O_TEXT; | |
911 | oflag |= O_BINARY; | |
912 | } | |
913 | else if (mode[0] == 't') | |
914 | { | |
915 | oflag &= ~O_BINARY; | |
916 | oflag |= O_TEXT; | |
917 | } | |
918 | else break; | |
919 | ||
920 | fd = _open (map_win32_filename (path, NULL), oflag | _O_NOINHERIT, 0644); | |
921 | if (fd < 0) | |
922 | return NULL; | |
923 | ||
924 | return fdopen (fd, mode_save); | |
95ed0025 | 925 | } |
480b0c5b GV |
926 | |
927 | int | |
928 | sys_link (const char * path1, const char * path2) | |
929 | { | |
930 | errno = EINVAL; | |
931 | return -1; | |
932 | } | |
933 | ||
934 | int | |
935 | sys_mkdir (const char * path) | |
936 | { | |
937 | return _mkdir (map_win32_filename (path, NULL)); | |
938 | } | |
939 | ||
940 | char * | |
941 | sys_mktemp (char * template) | |
942 | { | |
943 | return (char *) map_win32_filename ((const char *) _mktemp (template), NULL); | |
944 | } | |
945 | ||
946 | int | |
947 | sys_open (const char * path, int oflag, int mode) | |
948 | { | |
949 | /* Force all file handles to be non-inheritable. */ | |
950 | return _open (map_win32_filename (path, NULL), oflag | _O_NOINHERIT, mode); | |
951 | } | |
952 | ||
953 | int | |
954 | sys_rename (const char * oldname, const char * newname) | |
955 | { | |
956 | char temp[MAX_PATH]; | |
957 | ||
958 | /* MoveFile on Win95 doesn't correctly change the short file name | |
959 | alias when oldname has a three char extension and newname has the | |
960 | same first three chars in its extension. To avoid problems, on | |
961 | Win95 we rename to a temporary name first. */ | |
962 | ||
963 | strcpy (temp, map_win32_filename (oldname, NULL)); | |
964 | ||
965 | if (GetVersion () & 0x80000000) | |
966 | { | |
967 | char * p; | |
968 | ||
969 | unixtodos_filename (temp); | |
970 | if (p = strrchr (temp, '\\')) | |
971 | p++; | |
972 | else | |
973 | p = temp; | |
974 | strcpy (p, "__XXXXXX"); | |
975 | _mktemp (temp); | |
976 | if (rename (map_win32_filename (oldname, NULL), temp) < 0) | |
977 | return -1; | |
978 | } | |
979 | ||
980 | /* Emulate Unix behaviour - newname is deleted if it already exists | |
981 | (at least if it is a file; don't do this for directories). */ | |
982 | newname = map_win32_filename (newname, NULL); | |
983 | if (GetFileAttributes (newname) != -1) | |
984 | { | |
985 | _chmod (newname, 0666); | |
986 | _unlink (newname); | |
987 | } | |
988 | ||
989 | return rename (temp, newname); | |
990 | } | |
991 | ||
992 | int | |
993 | sys_rmdir (const char * path) | |
994 | { | |
995 | return _rmdir (map_win32_filename (path, NULL)); | |
996 | } | |
997 | ||
998 | int | |
999 | sys_unlink (const char * path) | |
1000 | { | |
1001 | return _unlink (map_win32_filename (path, NULL)); | |
1002 | } | |
1003 | ||
1004 | static FILETIME utc_base_ft; | |
1005 | static long double utc_base; | |
1006 | static int init = 0; | |
1007 | ||
1008 | static time_t | |
1009 | convert_time (FILETIME ft) | |
1010 | { | |
1011 | long double ret; | |
1012 | ||
1013 | if (!init) | |
1014 | { | |
1015 | /* Determine the delta between 1-Jan-1601 and 1-Jan-1970. */ | |
1016 | SYSTEMTIME st; | |
1017 | ||
1018 | st.wYear = 1970; | |
1019 | st.wMonth = 1; | |
1020 | st.wDay = 1; | |
1021 | st.wHour = 0; | |
1022 | st.wMinute = 0; | |
1023 | st.wSecond = 0; | |
1024 | st.wMilliseconds = 0; | |
1025 | ||
1026 | SystemTimeToFileTime (&st, &utc_base_ft); | |
1027 | utc_base = (long double) utc_base_ft.dwHighDateTime | |
1028 | * 4096 * 1024 * 1024 + utc_base_ft.dwLowDateTime; | |
1029 | init = 1; | |
1030 | } | |
1031 | ||
1032 | if (CompareFileTime (&ft, &utc_base_ft) < 0) | |
1033 | return 0; | |
1034 | ||
1035 | ret = (long double) ft.dwHighDateTime * 4096 * 1024 * 1024 + ft.dwLowDateTime; | |
1036 | ret -= utc_base; | |
1037 | return (time_t) (ret * 1e-7); | |
1038 | } | |
1039 | ||
1040 | #if 0 | |
1041 | /* in case we ever have need of this */ | |
1042 | void | |
1043 | convert_from_time_t (time_t time, FILETIME * pft) | |
1044 | { | |
1045 | long double tmp; | |
1046 | ||
1047 | if (!init) | |
1048 | { | |
1049 | /* Determine the delta between 1-Jan-1601 and 1-Jan-1970. */ | |
1050 | SYSTEMTIME st; | |
1051 | ||
1052 | st.wYear = 1970; | |
1053 | st.wMonth = 1; | |
1054 | st.wDay = 1; | |
1055 | st.wHour = 0; | |
1056 | st.wMinute = 0; | |
1057 | st.wSecond = 0; | |
1058 | st.wMilliseconds = 0; | |
1059 | ||
1060 | SystemTimeToFileTime (&st, &utc_base_ft); | |
1061 | utc_base = (long double) utc_base_ft.dwHighDateTime | |
1062 | * 4096 * 1024 * 1024 + utc_base_ft.dwLowDateTime; | |
1063 | init = 1; | |
1064 | } | |
1065 | ||
1066 | /* time in 100ns units since 1-Jan-1601 */ | |
1067 | tmp = (long double) time * 1e7 + utc_base; | |
1068 | pft->dwHighDateTime = (DWORD) (tmp / (4096.0 * 1024 * 1024)); | |
1069 | pft->dwLowDateTime = (DWORD) (tmp - pft->dwHighDateTime); | |
1070 | } | |
1071 | #endif | |
1072 | ||
1073 | /* "PJW" algorithm (see the "Dragon" compiler book). */ | |
1074 | static unsigned | |
1075 | hashval (const char * str) | |
1076 | { | |
1077 | unsigned h = 0; | |
1078 | unsigned g; | |
1079 | while (*str) | |
1080 | { | |
1081 | h = (h << 4) + *str++; | |
1082 | if ((g = h & 0xf0000000) != 0) | |
1083 | h = (h ^ (g >> 24)) & 0x0fffffff; | |
1084 | } | |
1085 | return h; | |
1086 | } | |
1087 | ||
1088 | /* Return the hash value of the canonical pathname, excluding the | |
1089 | drive/UNC header, to get a hopefully unique inode number. */ | |
1090 | static _ino_t | |
1091 | generate_inode_val (const char * name) | |
1092 | { | |
1093 | char fullname[ MAX_PATH ]; | |
1094 | char * p; | |
1095 | unsigned hash; | |
1096 | ||
1097 | GetFullPathName (name, sizeof (fullname), fullname, &p); | |
1098 | get_volume_info (fullname, &p); | |
1099 | /* Normal Win32 filesystems are still case insensitive. */ | |
1100 | _strlwr (p); | |
1101 | hash = hashval (p); | |
1102 | return (_ino_t) (hash ^ (hash >> 16)); | |
1103 | } | |
1104 | ||
1105 | /* MSVC stat function can't cope with UNC names and has other bugs, so | |
1106 | replace it with our own. This also allows us to calculate consistent | |
1107 | inode values without hacks in the main Emacs code. */ | |
1108 | int | |
1109 | stat (const char * path, struct stat * buf) | |
1110 | { | |
1111 | char * name; | |
1112 | WIN32_FIND_DATA wfd; | |
1113 | HANDLE fh; | |
1114 | int permission; | |
1115 | int len; | |
1116 | int rootdir = FALSE; | |
1117 | ||
1118 | if (path == NULL || buf == NULL) | |
1119 | { | |
1120 | errno = EFAULT; | |
1121 | return -1; | |
1122 | } | |
1123 | ||
1124 | name = (char *) map_win32_filename (path, &path); | |
1125 | /* must be valid filename, no wild cards */ | |
1126 | if (strchr (name, '*') || strchr (name, '?')) | |
1127 | { | |
1128 | errno = ENOENT; | |
1129 | return -1; | |
1130 | } | |
1131 | ||
1132 | /* Remove trailing directory separator, unless name is the root | |
1133 | directory of a drive or UNC volume in which case ensure there | |
1134 | is a trailing separator. */ | |
1135 | len = strlen (name); | |
1136 | rootdir = (path >= name + len - 1 | |
1137 | && (IS_DIRECTORY_SEP (*path) || *path == 0)); | |
1138 | name = strcpy (alloca (len + 2), name); | |
1139 | ||
1140 | if (rootdir) | |
1141 | { | |
1142 | if (!IS_DIRECTORY_SEP (name[len-1])) | |
1143 | strcat (name, "\\"); | |
1144 | if (GetDriveType (name) < 2) | |
1145 | { | |
1146 | errno = ENOENT; | |
1147 | return -1; | |
1148 | } | |
1149 | memset (&wfd, 0, sizeof (wfd)); | |
1150 | wfd.dwFileAttributes = FILE_ATTRIBUTE_DIRECTORY; | |
1151 | wfd.ftCreationTime = utc_base_ft; | |
1152 | wfd.ftLastAccessTime = utc_base_ft; | |
1153 | wfd.ftLastWriteTime = utc_base_ft; | |
1154 | strcpy (wfd.cFileName, name); | |
1155 | } | |
1156 | else | |
1157 | { | |
1158 | if (IS_DIRECTORY_SEP (name[len-1])) | |
1159 | name[len - 1] = 0; | |
1160 | fh = FindFirstFile (name, &wfd); | |
1161 | if (fh == INVALID_HANDLE_VALUE) | |
1162 | { | |
1163 | errno = ENOENT; | |
1164 | return -1; | |
1165 | } | |
1166 | FindClose (fh); | |
1167 | } | |
1168 | ||
1169 | if (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) | |
1170 | { | |
1171 | buf->st_mode = _S_IFDIR; | |
1172 | buf->st_nlink = 2; /* doesn't really matter */ | |
1173 | } | |
1174 | else | |
1175 | { | |
1176 | #if 0 | |
1177 | /* This is more accurate in terms of gettting the correct number | |
1178 | of links, but is quite slow (it is noticable when Emacs is | |
1179 | making a list of file name completions). */ | |
1180 | BY_HANDLE_FILE_INFORMATION info; | |
1181 | ||
1182 | fh = CreateFile (name, GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE, | |
1183 | NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL); | |
1184 | ||
1185 | if (GetFileInformationByHandle (fh, &info)) | |
1186 | { | |
1187 | switch (GetFileType (fh)) | |
1188 | { | |
1189 | case FILE_TYPE_DISK: | |
1190 | buf->st_mode = _S_IFREG; | |
1191 | break; | |
1192 | case FILE_TYPE_PIPE: | |
1193 | buf->st_mode = _S_IFIFO; | |
1194 | break; | |
1195 | case FILE_TYPE_CHAR: | |
1196 | case FILE_TYPE_UNKNOWN: | |
1197 | default: | |
1198 | buf->st_mode = _S_IFCHR; | |
1199 | } | |
1200 | buf->st_nlink = info.nNumberOfLinks; | |
1201 | /* Could use file index, but this is not guaranteed to be | |
1202 | unique unless we keep a handle open all the time. */ | |
1203 | /* buf->st_ino = info.nFileIndexLow ^ info.nFileIndexHigh; */ | |
1204 | CloseHandle (fh); | |
1205 | } | |
1206 | else | |
1207 | { | |
1208 | errno = EACCES; | |
1209 | return -1; | |
1210 | } | |
1211 | #else | |
1212 | buf->st_mode = _S_IFREG; | |
1213 | buf->st_nlink = 1; | |
1214 | #endif | |
1215 | } | |
1216 | ||
1217 | /* consider files to belong to current user */ | |
1218 | buf->st_uid = the_passwd.pw_uid; | |
1219 | buf->st_gid = the_passwd.pw_gid; | |
1220 | ||
1221 | /* volume_info is set indirectly by map_win32_filename */ | |
1222 | buf->st_dev = volume_info.serialnum; | |
1223 | buf->st_rdev = volume_info.serialnum; | |
1224 | ||
1225 | buf->st_ino = generate_inode_val (name); | |
1226 | ||
1227 | buf->st_size = wfd.nFileSizeLow; | |
1228 | ||
1229 | /* Convert timestamps to Unix format. */ | |
1230 | buf->st_mtime = convert_time (wfd.ftLastWriteTime); | |
1231 | buf->st_atime = convert_time (wfd.ftLastAccessTime); | |
1232 | if (buf->st_atime == 0) buf->st_atime = buf->st_mtime; | |
1233 | buf->st_ctime = convert_time (wfd.ftCreationTime); | |
1234 | if (buf->st_ctime == 0) buf->st_ctime = buf->st_mtime; | |
1235 | ||
1236 | /* determine rwx permissions */ | |
1237 | if (wfd.dwFileAttributes & FILE_ATTRIBUTE_READONLY) | |
1238 | permission = _S_IREAD; | |
1239 | else | |
1240 | permission = _S_IREAD | _S_IWRITE; | |
1241 | ||
1242 | if (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) | |
1243 | permission |= _S_IEXEC; | |
1244 | else | |
1245 | { | |
1246 | char * p = strrchr (name, '.'); | |
1247 | if (p != NULL && | |
1248 | (stricmp (p, ".exe") == 0 || | |
1249 | stricmp (p, ".com") == 0 || | |
1250 | stricmp (p, ".bat") == 0 || | |
1251 | stricmp (p, ".cmd") == 0)) | |
1252 | permission |= _S_IEXEC; | |
1253 | } | |
1254 | ||
1255 | buf->st_mode |= permission | (permission >> 3) | (permission >> 6); | |
1256 | ||
1257 | return 0; | |
1258 | } | |
1259 | ||
1260 | #ifdef HAVE_SOCKETS | |
1261 | ||
1262 | /* Wrappers for winsock functions to map between our file descriptors | |
1263 | and winsock's handles; also set h_errno for convenience. | |
1264 | ||
1265 | To allow Emacs to run on systems which don't have winsock support | |
1266 | installed, we dynamically link to winsock on startup if present, and | |
1267 | otherwise provide the minimum necessary functionality | |
1268 | (eg. gethostname). */ | |
1269 | ||
1270 | /* function pointers for relevant socket functions */ | |
1271 | int (PASCAL *pfn_WSAStartup) (WORD wVersionRequired, LPWSADATA lpWSAData); | |
1272 | void (PASCAL *pfn_WSASetLastError) (int iError); | |
1273 | int (PASCAL *pfn_WSAGetLastError) (void); | |
1274 | int (PASCAL *pfn_socket) (int af, int type, int protocol); | |
1275 | int (PASCAL *pfn_bind) (SOCKET s, const struct sockaddr *addr, int namelen); | |
1276 | int (PASCAL *pfn_connect) (SOCKET s, const struct sockaddr *addr, int namelen); | |
1277 | int (PASCAL *pfn_ioctlsocket) (SOCKET s, long cmd, u_long *argp); | |
1278 | int (PASCAL *pfn_recv) (SOCKET s, char * buf, int len, int flags); | |
1279 | int (PASCAL *pfn_send) (SOCKET s, const char * buf, int len, int flags); | |
1280 | int (PASCAL *pfn_closesocket) (SOCKET s); | |
1281 | int (PASCAL *pfn_shutdown) (SOCKET s, int how); | |
1282 | int (PASCAL *pfn_WSACleanup) (void); | |
1283 | ||
1284 | u_short (PASCAL *pfn_htons) (u_short hostshort); | |
1285 | u_short (PASCAL *pfn_ntohs) (u_short netshort); | |
1286 | unsigned long (PASCAL *pfn_inet_addr) (const char * cp); | |
1287 | int (PASCAL *pfn_gethostname) (char * name, int namelen); | |
1288 | struct hostent * (PASCAL *pfn_gethostbyname) (const char * name); | |
1289 | struct servent * (PASCAL *pfn_getservbyname) (const char * name, const char * proto); | |
1290 | ||
1291 | static int have_winsock; | |
1292 | static HANDLE winsock_lib; | |
1293 | ||
1294 | static void | |
1295 | term_winsock (void) | |
1296 | { | |
1297 | if (have_winsock) | |
1298 | { | |
1299 | pfn_WSACleanup (); | |
1300 | FreeLibrary (winsock_lib); | |
1301 | } | |
1302 | } | |
1303 | ||
1304 | static void | |
1305 | init_winsock () | |
1306 | { | |
1307 | WSADATA winsockData; | |
1308 | ||
1309 | winsock_lib = LoadLibrary ("wsock32.dll"); | |
1310 | ||
1311 | if (winsock_lib != NULL) | |
1312 | { | |
1313 | /* dynamically link to socket functions */ | |
1314 | ||
1315 | #define LOAD_PROC(fn) \ | |
1316 | if ((pfn_##fn = (void *) GetProcAddress (winsock_lib, #fn)) == NULL) \ | |
1317 | goto fail; | |
1318 | ||
1319 | LOAD_PROC( WSAStartup ); | |
1320 | LOAD_PROC( WSASetLastError ); | |
1321 | LOAD_PROC( WSAGetLastError ); | |
1322 | LOAD_PROC( socket ); | |
1323 | LOAD_PROC( bind ); | |
1324 | LOAD_PROC( connect ); | |
1325 | LOAD_PROC( ioctlsocket ); | |
1326 | LOAD_PROC( recv ); | |
1327 | LOAD_PROC( send ); | |
1328 | LOAD_PROC( closesocket ); | |
1329 | LOAD_PROC( shutdown ); | |
1330 | LOAD_PROC( htons ); | |
1331 | LOAD_PROC( ntohs ); | |
1332 | LOAD_PROC( inet_addr ); | |
1333 | LOAD_PROC( gethostname ); | |
1334 | LOAD_PROC( gethostbyname ); | |
1335 | LOAD_PROC( getservbyname ); | |
1336 | LOAD_PROC( WSACleanup ); | |
1337 | ||
1338 | /* specify version 1.1 of winsock */ | |
1339 | if (pfn_WSAStartup (0x101, &winsockData) == 0) | |
1340 | { | |
1341 | have_winsock = TRUE; | |
1342 | return; | |
1343 | } | |
1344 | ||
1345 | fail: | |
1346 | FreeLibrary (winsock_lib); | |
1347 | } | |
1348 | have_winsock = FALSE; | |
1349 | } | |
1350 | ||
1351 | ||
1352 | int h_errno = 0; | |
1353 | ||
1354 | /* function to set h_errno for compatability; map winsock error codes to | |
1355 | normal system codes where they overlap (non-overlapping definitions | |
1356 | are already in <sys/socket.h> */ | |
1357 | static void set_errno () | |
1358 | { | |
1359 | if (!have_winsock) | |
1360 | h_errno = EINVAL; | |
1361 | else | |
1362 | h_errno = pfn_WSAGetLastError (); | |
1363 | ||
1364 | switch (h_errno) | |
1365 | { | |
1366 | case WSAEACCES: h_errno = EACCES; break; | |
1367 | case WSAEBADF: h_errno = EBADF; break; | |
1368 | case WSAEFAULT: h_errno = EFAULT; break; | |
1369 | case WSAEINTR: h_errno = EINTR; break; | |
1370 | case WSAEINVAL: h_errno = EINVAL; break; | |
1371 | case WSAEMFILE: h_errno = EMFILE; break; | |
1372 | case WSAENAMETOOLONG: h_errno = ENAMETOOLONG; break; | |
1373 | case WSAENOTEMPTY: h_errno = ENOTEMPTY; break; | |
1374 | } | |
1375 | errno = h_errno; | |
1376 | } | |
1377 | ||
1378 | static void check_errno () | |
1379 | { | |
1380 | if (h_errno == 0 && have_winsock) | |
1381 | pfn_WSASetLastError (0); | |
1382 | } | |
1383 | ||
1384 | /* [andrewi 3-May-96] I've had conflicting results using both methods, | |
1385 | but I believe the method of keeping the socket handle separate (and | |
1386 | insuring it is not inheritable) is the correct one. */ | |
1387 | ||
1388 | //#define SOCK_REPLACE_HANDLE | |
1389 | ||
1390 | #ifdef SOCK_REPLACE_HANDLE | |
1391 | #define SOCK_HANDLE(fd) ((SOCKET) _get_osfhandle (fd)) | |
1392 | #else | |
1393 | #define SOCK_HANDLE(fd) ((SOCKET) fd_info[fd].hnd) | |
1394 | #endif | |
1395 | ||
1396 | int | |
1397 | sys_socket(int af, int type, int protocol) | |
1398 | { | |
1399 | int fd; | |
1400 | long s; | |
1401 | child_process * cp; | |
1402 | ||
1403 | if (!have_winsock) | |
1404 | { | |
1405 | h_errno = ENETDOWN; | |
1406 | return INVALID_SOCKET; | |
1407 | } | |
1408 | ||
1409 | check_errno (); | |
1410 | ||
1411 | /* call the real socket function */ | |
1412 | s = (long) pfn_socket (af, type, protocol); | |
1413 | ||
1414 | if (s != INVALID_SOCKET) | |
1415 | { | |
1416 | /* Although under NT 3.5 _open_osfhandle will accept a socket | |
1417 | handle, if opened with SO_OPENTYPE == SO_SYNCHRONOUS_NONALERT, | |
1418 | that does not work under NT 3.1. However, we can get the same | |
1419 | effect by using a backdoor function to replace an existing | |
1420 | descriptor handle with the one we want. */ | |
1421 | ||
1422 | /* allocate a file descriptor (with appropriate flags) */ | |
1423 | fd = _open ("NUL:", _O_RDWR); | |
1424 | if (fd >= 0) | |
1425 | { | |
1426 | #ifdef SOCK_REPLACE_HANDLE | |
1427 | /* now replace handle to NUL with our socket handle */ | |
1428 | CloseHandle ((HANDLE) _get_osfhandle (fd)); | |
1429 | _free_osfhnd (fd); | |
1430 | _set_osfhnd (fd, s); | |
1431 | /* setmode (fd, _O_BINARY); */ | |
1432 | #else | |
1433 | /* Make a non-inheritable copy of the socket handle. */ | |
1434 | { | |
1435 | HANDLE parent; | |
1436 | HANDLE new_s = INVALID_HANDLE_VALUE; | |
1437 | ||
1438 | parent = GetCurrentProcess (); | |
1439 | ||
1440 | DuplicateHandle (parent, | |
1441 | (HANDLE) s, | |
1442 | parent, | |
1443 | &new_s, | |
1444 | 0, | |
1445 | FALSE, | |
1446 | DUPLICATE_SAME_ACCESS); | |
1447 | pfn_closesocket (s); | |
1448 | fd_info[fd].hnd = new_s; | |
1449 | s = (SOCKET) new_s; | |
1450 | } | |
1451 | #endif | |
1452 | ||
1453 | /* set our own internal flags */ | |
1454 | fd_info[fd].flags = FILE_SOCKET | FILE_BINARY | FILE_READ | FILE_WRITE; | |
1455 | ||
1456 | cp = new_child (); | |
1457 | if (cp) | |
1458 | { | |
1459 | cp->fd = fd; | |
1460 | cp->status = STATUS_READ_ACKNOWLEDGED; | |
1461 | ||
1462 | /* attach child_process to fd_info */ | |
1463 | if (fd_info[ fd ].cp != NULL) | |
1464 | { | |
1465 | DebPrint (("sys_socket: fd_info[%d] apparently in use!\n", fd)); | |
1466 | abort (); | |
1467 | } | |
1468 | ||
1469 | fd_info[ fd ].cp = cp; | |
1470 | ||
1471 | /* success! */ | |
1472 | return fd; | |
1473 | } | |
1474 | ||
1475 | /* clean up */ | |
1476 | _close (fd); | |
1477 | } | |
1478 | pfn_closesocket (s); | |
1479 | h_errno = EMFILE; | |
1480 | } | |
1481 | set_errno (); | |
1482 | ||
1483 | return -1; | |
1484 | } | |
1485 | ||
1486 | ||
1487 | int | |
1488 | sys_bind (int s, const struct sockaddr * addr, int namelen) | |
1489 | { | |
1490 | if (!have_winsock) | |
1491 | { | |
1492 | h_errno = ENOTSOCK; | |
1493 | return SOCKET_ERROR; | |
1494 | } | |
1495 | ||
1496 | check_errno (); | |
1497 | if (fd_info[s].flags & FILE_SOCKET) | |
1498 | { | |
1499 | int rc = pfn_bind (SOCK_HANDLE (s), addr, namelen); | |
1500 | if (rc == SOCKET_ERROR) | |
1501 | set_errno (); | |
1502 | return rc; | |
1503 | } | |
1504 | h_errno = ENOTSOCK; | |
1505 | return SOCKET_ERROR; | |
1506 | } | |
1507 | ||
1508 | ||
1509 | int | |
1510 | sys_connect (int s, const struct sockaddr * name, int namelen) | |
1511 | { | |
1512 | if (!have_winsock) | |
1513 | { | |
1514 | h_errno = ENOTSOCK; | |
1515 | return SOCKET_ERROR; | |
1516 | } | |
1517 | ||
1518 | check_errno (); | |
1519 | if (fd_info[s].flags & FILE_SOCKET) | |
1520 | { | |
1521 | int rc = pfn_connect (SOCK_HANDLE (s), name, namelen); | |
1522 | if (rc == SOCKET_ERROR) | |
1523 | set_errno (); | |
1524 | return rc; | |
1525 | } | |
1526 | h_errno = ENOTSOCK; | |
1527 | return SOCKET_ERROR; | |
1528 | } | |
1529 | ||
1530 | u_short | |
1531 | sys_htons (u_short hostshort) | |
1532 | { | |
1533 | return (have_winsock) ? | |
1534 | pfn_htons (hostshort) : hostshort; | |
1535 | } | |
1536 | ||
1537 | u_short | |
1538 | sys_ntohs (u_short netshort) | |
1539 | { | |
1540 | return (have_winsock) ? | |
1541 | pfn_ntohs (netshort) : netshort; | |
1542 | } | |
1543 | ||
1544 | unsigned long | |
1545 | sys_inet_addr (const char * cp) | |
1546 | { | |
1547 | return (have_winsock) ? | |
1548 | pfn_inet_addr (cp) : INADDR_NONE; | |
1549 | } | |
1550 | ||
1551 | int | |
1552 | sys_gethostname (char * name, int namelen) | |
1553 | { | |
1554 | if (have_winsock) | |
1555 | return pfn_gethostname (name, namelen); | |
1556 | ||
1557 | if (namelen > MAX_COMPUTERNAME_LENGTH) | |
1558 | return !GetComputerName (name, &namelen); | |
1559 | ||
1560 | h_errno = EFAULT; | |
1561 | return SOCKET_ERROR; | |
1562 | } | |
1563 | ||
1564 | struct hostent * | |
1565 | sys_gethostbyname(const char * name) | |
1566 | { | |
1567 | struct hostent * host; | |
1568 | ||
1569 | if (!have_winsock) | |
1570 | { | |
1571 | h_errno = ENETDOWN; | |
1572 | return NULL; | |
1573 | } | |
1574 | ||
1575 | check_errno (); | |
1576 | host = pfn_gethostbyname (name); | |
1577 | if (!host) | |
1578 | set_errno (); | |
1579 | return host; | |
1580 | } | |
1581 | ||
1582 | struct servent * | |
1583 | sys_getservbyname(const char * name, const char * proto) | |
1584 | { | |
1585 | struct servent * serv; | |
1586 | ||
1587 | if (!have_winsock) | |
1588 | { | |
1589 | h_errno = ENETDOWN; | |
1590 | return NULL; | |
1591 | } | |
1592 | ||
1593 | check_errno (); | |
1594 | serv = pfn_getservbyname (name, proto); | |
1595 | if (!serv) | |
1596 | set_errno (); | |
1597 | return serv; | |
1598 | } | |
1599 | ||
1600 | #endif /* HAVE_SOCKETS */ | |
1601 | ||
1602 | ||
1603 | /* Shadow main io functions: we need to handle pipes and sockets more | |
1604 | intelligently, and implement non-blocking mode as well. */ | |
1605 | ||
1606 | int | |
1607 | sys_close (int fd) | |
1608 | { | |
1609 | int rc; | |
1610 | ||
1611 | if (fd < 0 || fd >= MAXDESC) | |
1612 | { | |
1613 | errno = EBADF; | |
1614 | return -1; | |
1615 | } | |
1616 | ||
1617 | if (fd_info[fd].cp) | |
1618 | { | |
1619 | child_process * cp = fd_info[fd].cp; | |
1620 | ||
1621 | fd_info[fd].cp = NULL; | |
1622 | ||
1623 | if (CHILD_ACTIVE (cp)) | |
1624 | { | |
1625 | /* if last descriptor to active child_process then cleanup */ | |
1626 | int i; | |
1627 | for (i = 0; i < MAXDESC; i++) | |
1628 | { | |
1629 | if (i == fd) | |
1630 | continue; | |
1631 | if (fd_info[i].cp == cp) | |
1632 | break; | |
1633 | } | |
1634 | if (i == MAXDESC) | |
1635 | { | |
1636 | #if defined (HAVE_SOCKETS) && !defined (SOCK_REPLACE_HANDLE) | |
1637 | if (fd_info[fd].flags & FILE_SOCKET) | |
1638 | { | |
1639 | if (!have_winsock) abort (); | |
1640 | ||
1641 | pfn_shutdown (SOCK_HANDLE (fd), 2); | |
1642 | rc = pfn_closesocket (SOCK_HANDLE (fd)); | |
1643 | } | |
1644 | #endif | |
1645 | delete_child (cp); | |
1646 | } | |
1647 | } | |
1648 | } | |
1649 | ||
1650 | /* Note that sockets do not need special treatment here (at least on | |
1651 | NT and Win95 using the standard tcp/ip stacks) - it appears that | |
1652 | closesocket is equivalent to CloseHandle, which is to be expected | |
1653 | because socket handles are fully fledged kernel handles. */ | |
1654 | rc = _close (fd); | |
1655 | ||
1656 | if (rc == 0) | |
1657 | fd_info[fd].flags = 0; | |
1658 | ||
1659 | return rc; | |
1660 | } | |
1661 | ||
1662 | int | |
1663 | sys_dup (int fd) | |
1664 | { | |
1665 | int new_fd; | |
1666 | ||
1667 | new_fd = _dup (fd); | |
1668 | if (new_fd >= 0) | |
1669 | { | |
1670 | /* duplicate our internal info as well */ | |
1671 | fd_info[new_fd] = fd_info[fd]; | |
1672 | } | |
1673 | return new_fd; | |
1674 | } | |
1675 | ||
1676 | ||
1677 | int | |
1678 | sys_dup2 (int src, int dst) | |
1679 | { | |
1680 | int rc; | |
1681 | ||
1682 | if (dst < 0 || dst >= MAXDESC) | |
1683 | { | |
1684 | errno = EBADF; | |
1685 | return -1; | |
1686 | } | |
1687 | ||
1688 | /* make sure we close the destination first if it's a pipe or socket */ | |
1689 | if (src != dst && fd_info[dst].flags != 0) | |
1690 | sys_close (dst); | |
1691 | ||
1692 | rc = _dup2 (src, dst); | |
1693 | if (rc == 0) | |
1694 | { | |
1695 | /* duplicate our internal info as well */ | |
1696 | fd_info[dst] = fd_info[src]; | |
1697 | } | |
1698 | return rc; | |
1699 | } | |
1700 | ||
1701 | /* From callproc.c */ | |
1702 | extern Lisp_Object Vbinary_process_input; | |
1703 | extern Lisp_Object Vbinary_process_output; | |
1704 | ||
1705 | /* Unix pipe() has only one arg */ | |
1706 | int | |
1707 | sys_pipe (int * phandles) | |
1708 | { | |
1709 | int rc; | |
1710 | unsigned flags; | |
1711 | child_process * cp; | |
1712 | ||
1713 | /* make pipe handles non-inheritable; when we spawn a child, | |
1714 | we replace the relevant handle with an inheritable one. */ | |
1715 | rc = _pipe (phandles, 0, _O_NOINHERIT); | |
1716 | ||
1717 | if (rc == 0) | |
1718 | { | |
1719 | /* set internal flags, and put read and write handles into binary | |
1720 | mode as necessary; if not in binary mode, set the MSVC internal | |
1721 | FDEV (0x40) flag to prevent _read from treating ^Z as eof (this | |
1722 | could otherwise allow Emacs to hang because it then waits | |
1723 | indefinitely for the child process to exit, when it might not be | |
1724 | finished). */ | |
1725 | flags = FILE_PIPE | FILE_READ; | |
1726 | if (!NILP (Vbinary_process_output)) | |
1727 | { | |
1728 | flags |= FILE_BINARY; | |
1729 | setmode (phandles[0], _O_BINARY); | |
1730 | } | |
1731 | #if (_MSC_VER == 900) | |
1732 | else | |
1733 | _osfile[phandles[0]] |= 0x40; | |
1734 | #endif | |
1735 | ||
1736 | fd_info[phandles[0]].flags = flags; | |
1737 | ||
1738 | flags = FILE_PIPE | FILE_WRITE; | |
1739 | if (!NILP (Vbinary_process_input)) | |
1740 | { | |
1741 | flags |= FILE_BINARY; | |
1742 | setmode (phandles[1], _O_BINARY); | |
1743 | } | |
1744 | #if (_MSC_VER == 900) | |
1745 | else | |
1746 | _osfile[phandles[1]] |= 0x40; | |
1747 | #endif | |
1748 | ||
1749 | fd_info[phandles[1]].flags = flags; | |
1750 | } | |
1751 | ||
1752 | return rc; | |
1753 | } | |
1754 | ||
f7554349 KH |
1755 | /* From ntproc.c */ |
1756 | extern Lisp_Object Vwin32_pipe_read_delay; | |
1757 | ||
480b0c5b GV |
1758 | /* Function to do blocking read of one byte, needed to implement |
1759 | select. It is only allowed on sockets and pipes. */ | |
1760 | int | |
1761 | _sys_read_ahead (int fd) | |
1762 | { | |
1763 | child_process * cp; | |
1764 | int rc; | |
1765 | ||
1766 | if (fd < 0 || fd >= MAXDESC) | |
1767 | return STATUS_READ_ERROR; | |
1768 | ||
1769 | cp = fd_info[fd].cp; | |
1770 | ||
1771 | if (cp == NULL || cp->fd != fd || cp->status != STATUS_READ_READY) | |
1772 | return STATUS_READ_ERROR; | |
1773 | ||
1774 | if ((fd_info[fd].flags & (FILE_PIPE | FILE_SOCKET)) == 0 | |
1775 | || (fd_info[fd].flags & FILE_READ) == 0) | |
1776 | { | |
1777 | DebPrint (("_sys_read_ahead: internal error: fd %d is not a pipe or socket!\n", fd)); | |
1778 | abort (); | |
1779 | } | |
1780 | ||
1781 | cp->status = STATUS_READ_IN_PROGRESS; | |
1782 | ||
1783 | if (fd_info[fd].flags & FILE_PIPE) | |
f7554349 KH |
1784 | { |
1785 | /* Use read to get CRLF translation */ | |
1786 | rc = _read (fd, &cp->chr, sizeof (char)); | |
1787 | ||
1788 | /* Give subprocess time to buffer some more output for us before | |
1789 | reporting that input is available; we need this because Win95 | |
1790 | connects DOS programs to pipes by making the pipe appear to be | |
1791 | the normal console stdout - as a result most DOS programs will | |
1792 | write to stdout without buffering, ie. one character at a | |
1793 | time. Even some Win32 programs do this - "dir" in a command | |
1794 | shell on NT is very slow if we don't do this. */ | |
1795 | if (rc > 0) | |
1796 | { | |
1797 | int wait = XINT (Vwin32_pipe_read_delay); | |
1798 | ||
1799 | if (wait > 0) | |
1800 | Sleep (wait); | |
1801 | else if (wait < 0) | |
1802 | while (++wait <= 0) | |
1803 | /* Yield remainder of our time slice, effectively giving a | |
1804 | temporary priority boost to the child process. */ | |
1805 | Sleep (0); | |
1806 | } | |
1807 | } | |
480b0c5b GV |
1808 | #ifdef HAVE_SOCKETS |
1809 | else if (fd_info[fd].flags & FILE_SOCKET) | |
1810 | rc = pfn_recv (SOCK_HANDLE (fd), &cp->chr, sizeof (char), 0); | |
1811 | #endif | |
1812 | ||
1813 | if (rc == sizeof (char)) | |
1814 | cp->status = STATUS_READ_SUCCEEDED; | |
1815 | else | |
1816 | cp->status = STATUS_READ_FAILED; | |
1817 | ||
1818 | return cp->status; | |
1819 | } | |
1820 | ||
1821 | int | |
1822 | sys_read (int fd, char * buffer, unsigned int count) | |
1823 | { | |
1824 | int nchars; | |
1825 | int extra = 0; | |
1826 | int to_read; | |
1827 | DWORD waiting; | |
1828 | ||
1829 | if (fd < 0 || fd >= MAXDESC) | |
1830 | { | |
1831 | errno = EBADF; | |
1832 | return -1; | |
1833 | } | |
1834 | ||
1835 | if (fd_info[fd].flags & (FILE_PIPE | FILE_SOCKET)) | |
1836 | { | |
1837 | child_process *cp = fd_info[fd].cp; | |
1838 | ||
1839 | if ((fd_info[fd].flags & FILE_READ) == 0) | |
1840 | { | |
1841 | errno = EBADF; | |
1842 | return -1; | |
1843 | } | |
1844 | ||
1845 | /* presence of a child_process structure means we are operating in | |
1846 | non-blocking mode - otherwise we just call _read directly. | |
1847 | Note that the child_process structure might be missing because | |
1848 | reap_subprocess has been called; in this case the pipe is | |
1849 | already broken, so calling _read on it is okay. */ | |
1850 | if (cp) | |
1851 | { | |
1852 | int current_status = cp->status; | |
1853 | ||
1854 | switch (current_status) | |
1855 | { | |
1856 | case STATUS_READ_FAILED: | |
1857 | case STATUS_READ_ERROR: | |
1858 | /* report normal EOF */ | |
1859 | return 0; | |
1860 | ||
1861 | case STATUS_READ_READY: | |
1862 | case STATUS_READ_IN_PROGRESS: | |
1863 | DebPrint (("sys_read called when read is in progress\n")); | |
1864 | errno = EWOULDBLOCK; | |
1865 | return -1; | |
1866 | ||
1867 | case STATUS_READ_SUCCEEDED: | |
1868 | /* consume read-ahead char */ | |
1869 | *buffer++ = cp->chr; | |
1870 | count--; | |
1871 | extra = 1; | |
1872 | cp->status = STATUS_READ_ACKNOWLEDGED; | |
1873 | ResetEvent (cp->char_avail); | |
1874 | ||
1875 | case STATUS_READ_ACKNOWLEDGED: | |
1876 | break; | |
1877 | ||
1878 | default: | |
1879 | DebPrint (("sys_read: bad status %d\n", current_status)); | |
1880 | errno = EBADF; | |
1881 | return -1; | |
1882 | } | |
1883 | ||
1884 | if (fd_info[fd].flags & FILE_PIPE) | |
1885 | { | |
1886 | PeekNamedPipe ((HANDLE) _get_osfhandle (fd), NULL, 0, NULL, &waiting, NULL); | |
1887 | to_read = min (waiting, (DWORD) count); | |
1888 | ||
1889 | /* Use read to get CRLF translation */ | |
1890 | nchars = _read (fd, buffer, to_read); | |
1891 | } | |
1892 | #ifdef HAVE_SOCKETS | |
1893 | else /* FILE_SOCKET */ | |
1894 | { | |
1895 | if (!have_winsock) abort (); | |
1896 | ||
1897 | /* do the equivalent of a non-blocking read */ | |
1898 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONREAD, &waiting); | |
1899 | if (waiting == 0 && extra == 0) | |
1900 | { | |
1901 | h_errno = errno = EWOULDBLOCK; | |
1902 | return -1; | |
1903 | } | |
1904 | ||
1905 | nchars = 0; | |
1906 | if (waiting) | |
1907 | { | |
1908 | /* always use binary mode for sockets */ | |
1909 | nchars = pfn_recv (SOCK_HANDLE (fd), buffer, count, 0); | |
1910 | if (nchars == SOCKET_ERROR) | |
1911 | { | |
1912 | DebPrint(("sys_read.recv failed with error %d on socket %ld\n", | |
1913 | pfn_WSAGetLastError (), SOCK_HANDLE (fd))); | |
1914 | if (extra == 0) | |
1915 | { | |
1916 | set_errno (); | |
1917 | return -1; | |
1918 | } | |
1919 | nchars = 0; | |
1920 | } | |
1921 | } | |
1922 | } | |
1923 | #endif | |
1924 | } | |
1925 | else | |
1926 | nchars = _read (fd, buffer, count); | |
1927 | } | |
1928 | else | |
1929 | nchars = _read (fd, buffer, count); | |
1930 | ||
1931 | return nchars + extra; | |
1932 | } | |
1933 | ||
1934 | /* For now, don't bother with a non-blocking mode */ | |
1935 | int | |
1936 | sys_write (int fd, const void * buffer, unsigned int count) | |
1937 | { | |
1938 | int nchars; | |
1939 | ||
1940 | if (fd < 0 || fd >= MAXDESC) | |
1941 | { | |
1942 | errno = EBADF; | |
1943 | return -1; | |
1944 | } | |
1945 | ||
1946 | if (fd_info[fd].flags & (FILE_PIPE | FILE_SOCKET)) | |
1947 | if ((fd_info[fd].flags & FILE_WRITE) == 0) | |
1948 | { | |
1949 | errno = EBADF; | |
1950 | return -1; | |
1951 | } | |
1952 | #ifdef HAVE_SOCKETS | |
1953 | if (fd_info[fd].flags & FILE_SOCKET) | |
1954 | { | |
1955 | if (!have_winsock) abort (); | |
1956 | nchars = pfn_send (SOCK_HANDLE (fd), buffer, count, 0); | |
1957 | if (nchars == SOCKET_ERROR) | |
1958 | { | |
1959 | DebPrint(("sys_read.send failed with error %d on socket %ld\n", | |
1960 | pfn_WSAGetLastError (), SOCK_HANDLE (fd))); | |
1961 | set_errno (); | |
1962 | } | |
1963 | } | |
1964 | else | |
1965 | #endif | |
1966 | nchars = _write (fd, buffer, count); | |
1967 | ||
1968 | return nchars; | |
1969 | } | |
1970 | ||
1971 | ||
1972 | void | |
1973 | term_ntproc () | |
1974 | { | |
1975 | #ifdef HAVE_SOCKETS | |
1976 | /* shutdown the socket interface if necessary */ | |
1977 | term_winsock (); | |
1978 | #endif | |
1979 | } | |
1980 | ||
f7554349 KH |
1981 | extern BOOL can_run_dos_process; |
1982 | extern BOOL dos_process_running; | |
1983 | ||
480b0c5b GV |
1984 | void |
1985 | init_ntproc () | |
1986 | { | |
1987 | #ifdef HAVE_SOCKETS | |
1988 | /* initialise the socket interface if available */ | |
1989 | init_winsock (); | |
1990 | #endif | |
1991 | ||
1992 | /* Initial preparation for subprocess support: replace our standard | |
1993 | handles with non-inheritable versions. */ | |
1994 | { | |
1995 | HANDLE parent; | |
1996 | HANDLE stdin_save = INVALID_HANDLE_VALUE; | |
1997 | HANDLE stdout_save = INVALID_HANDLE_VALUE; | |
1998 | HANDLE stderr_save = INVALID_HANDLE_VALUE; | |
1999 | ||
2000 | parent = GetCurrentProcess (); | |
2001 | ||
2002 | /* ignore errors when duplicating and closing; typically the | |
2003 | handles will be invalid when running as a gui program. */ | |
2004 | DuplicateHandle (parent, | |
2005 | GetStdHandle (STD_INPUT_HANDLE), | |
2006 | parent, | |
2007 | &stdin_save, | |
2008 | 0, | |
2009 | FALSE, | |
2010 | DUPLICATE_SAME_ACCESS); | |
2011 | ||
2012 | DuplicateHandle (parent, | |
2013 | GetStdHandle (STD_OUTPUT_HANDLE), | |
2014 | parent, | |
2015 | &stdout_save, | |
2016 | 0, | |
2017 | FALSE, | |
2018 | DUPLICATE_SAME_ACCESS); | |
2019 | ||
2020 | DuplicateHandle (parent, | |
2021 | GetStdHandle (STD_ERROR_HANDLE), | |
2022 | parent, | |
2023 | &stderr_save, | |
2024 | 0, | |
2025 | FALSE, | |
2026 | DUPLICATE_SAME_ACCESS); | |
2027 | ||
2028 | fclose (stdin); | |
2029 | fclose (stdout); | |
2030 | fclose (stderr); | |
2031 | ||
2032 | if (stdin_save != INVALID_HANDLE_VALUE) | |
2033 | _open_osfhandle ((long) stdin_save, O_TEXT); | |
2034 | else | |
2035 | open ("nul", O_TEXT | O_NOINHERIT | O_RDONLY); | |
2036 | fdopen (0, "r"); | |
2037 | ||
2038 | if (stdout_save != INVALID_HANDLE_VALUE) | |
2039 | _open_osfhandle ((long) stdout_save, O_TEXT); | |
2040 | else | |
2041 | open ("nul", O_TEXT | O_NOINHERIT | O_WRONLY); | |
2042 | fdopen (1, "w"); | |
2043 | ||
2044 | if (stderr_save != INVALID_HANDLE_VALUE) | |
2045 | _open_osfhandle ((long) stderr_save, O_TEXT); | |
2046 | else | |
2047 | open ("nul", O_TEXT | O_NOINHERIT | O_WRONLY); | |
2048 | fdopen (2, "w"); | |
2049 | } | |
2050 | ||
f7554349 KH |
2051 | /* Only allow Emacs to run DOS programs on Win95. */ |
2052 | can_run_dos_process = (GetVersion () & 0x80000000); | |
2053 | dos_process_running = FALSE; | |
2054 | ||
480b0c5b GV |
2055 | /* unfortunately, atexit depends on implementation of malloc */ |
2056 | /* atexit (term_ntproc); */ | |
2057 | signal (SIGABRT, term_ntproc); | |
2058 | } | |
2059 | ||
2060 | /* end of nt.c */ |