Commit | Line | Data |
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e9e23e23 | 1 | /* Utility and Unix shadow routines for GNU Emacs on the Microsoft W32 API. |
0b5538bd | 2 | Copyright (C) 1994, 1995, 2000, 2001, 2002, 2003, 2004, |
aaef169d | 3 | 2005, 2006 Free Software Foundation, Inc. |
95ed0025 | 4 | |
3b7ad313 EN |
5 | This file is part of GNU Emacs. |
6 | ||
7 | GNU Emacs is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2, or (at your option) | |
10 | any later version. | |
11 | ||
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GNU Emacs; see the file COPYING. If not, write to | |
4fc5845f LK |
19 | the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
20 | Boston, MA 02110-1301, USA. | |
95ed0025 RS |
21 | |
22 | Geoff Voelker (voelker@cs.washington.edu) 7-29-94 | |
23 | */ | |
76b3903d | 24 | #include <stddef.h> /* for offsetof */ |
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 | 31 | #include <signal.h> |
b3308d2e | 32 | #include <sys/file.h> |
480b0c5b | 33 | #include <sys/time.h> |
16bb7578 | 34 | #include <sys/utime.h> |
480b0c5b GV |
35 | |
36 | /* must include CRT headers *before* config.h */ | |
4838e624 PJ |
37 | |
38 | #ifdef HAVE_CONFIG_H | |
39 | #include <config.h> | |
40 | #endif | |
41 | ||
480b0c5b GV |
42 | #undef access |
43 | #undef chdir | |
44 | #undef chmod | |
45 | #undef creat | |
46 | #undef ctime | |
47 | #undef fopen | |
48 | #undef link | |
49 | #undef mkdir | |
50 | #undef mktemp | |
51 | #undef open | |
52 | #undef rename | |
53 | #undef rmdir | |
54 | #undef unlink | |
55 | ||
56 | #undef close | |
57 | #undef dup | |
58 | #undef dup2 | |
59 | #undef pipe | |
60 | #undef read | |
61 | #undef write | |
95ed0025 | 62 | |
d8fcc1b9 AI |
63 | #undef strerror |
64 | ||
95ed0025 | 65 | #include "lisp.h" |
95ed0025 RS |
66 | |
67 | #include <pwd.h> | |
3d19b645 | 68 | #include <grp.h> |
95ed0025 | 69 | |
971bce75 AI |
70 | #ifdef __GNUC__ |
71 | #define _ANONYMOUS_UNION | |
72 | #define _ANONYMOUS_STRUCT | |
73 | #endif | |
480b0c5b | 74 | #include <windows.h> |
2d5324c5 | 75 | #include <shlobj.h> |
00b3b7b3 | 76 | |
480b0c5b GV |
77 | #ifdef HAVE_SOCKETS /* TCP connection support, if kernel can do it */ |
78 | #include <sys/socket.h> | |
79 | #undef socket | |
80 | #undef bind | |
81 | #undef connect | |
82 | #undef htons | |
83 | #undef ntohs | |
84 | #undef inet_addr | |
85 | #undef gethostname | |
86 | #undef gethostbyname | |
87 | #undef getservbyname | |
ecd270eb | 88 | #undef getpeername |
380961a6 | 89 | #undef shutdown |
962955c5 JR |
90 | #undef setsockopt |
91 | #undef listen | |
92 | #undef getsockname | |
93 | #undef accept | |
94 | #undef recvfrom | |
95 | #undef sendto | |
480b0c5b | 96 | #endif |
00b3b7b3 | 97 | |
489f9371 | 98 | #include "w32.h" |
480b0c5b | 99 | #include "ndir.h" |
489f9371 | 100 | #include "w32heap.h" |
253574a6 JR |
101 | #include "systime.h" |
102 | ||
2d5324c5 JR |
103 | typedef HRESULT (WINAPI * ShGetFolderPath_fn) |
104 | (IN HWND, IN int, IN HANDLE, IN DWORD, OUT char *); | |
105 | ||
9785d95b BK |
106 | void globals_of_w32 (); |
107 | ||
76b3903d GV |
108 | extern Lisp_Object Vw32_downcase_file_names; |
109 | extern Lisp_Object Vw32_generate_fake_inodes; | |
110 | extern Lisp_Object Vw32_get_true_file_attributes; | |
e0c181dd | 111 | extern int w32_num_mouse_buttons; |
76b3903d | 112 | |
18e070ac | 113 | \f |
9785d95b BK |
114 | /* |
115 | Initialization states | |
116 | */ | |
117 | static BOOL g_b_init_is_windows_9x; | |
118 | static BOOL g_b_init_open_process_token; | |
119 | static BOOL g_b_init_get_token_information; | |
120 | static BOOL g_b_init_lookup_account_sid; | |
121 | static BOOL g_b_init_get_sid_identifier_authority; | |
122 | ||
f60ae425 BK |
123 | /* |
124 | BEGIN: Wrapper functions around OpenProcessToken | |
125 | and other functions in advapi32.dll that are only | |
126 | supported in Windows NT / 2k / XP | |
127 | */ | |
128 | /* ** Function pointer typedefs ** */ | |
129 | typedef BOOL (WINAPI * OpenProcessToken_Proc) ( | |
130 | HANDLE ProcessHandle, | |
131 | DWORD DesiredAccess, | |
132 | PHANDLE TokenHandle); | |
133 | typedef BOOL (WINAPI * GetTokenInformation_Proc) ( | |
134 | HANDLE TokenHandle, | |
135 | TOKEN_INFORMATION_CLASS TokenInformationClass, | |
136 | LPVOID TokenInformation, | |
137 | DWORD TokenInformationLength, | |
138 | PDWORD ReturnLength); | |
139 | #ifdef _UNICODE | |
140 | const char * const LookupAccountSid_Name = "LookupAccountSidW"; | |
141 | #else | |
142 | const char * const LookupAccountSid_Name = "LookupAccountSidA"; | |
143 | #endif | |
144 | typedef BOOL (WINAPI * LookupAccountSid_Proc) ( | |
145 | LPCTSTR lpSystemName, | |
146 | PSID Sid, | |
147 | LPTSTR Name, | |
148 | LPDWORD cbName, | |
149 | LPTSTR DomainName, | |
150 | LPDWORD cbDomainName, | |
151 | PSID_NAME_USE peUse); | |
152 | typedef PSID_IDENTIFIER_AUTHORITY (WINAPI * GetSidIdentifierAuthority_Proc) ( | |
153 | PSID pSid); | |
154 | ||
155 | /* ** A utility function ** */ | |
156 | static BOOL is_windows_9x () | |
157 | { | |
9785d95b | 158 | static BOOL s_b_ret=0; |
f60ae425 | 159 | OSVERSIONINFO os_ver; |
9785d95b | 160 | if (g_b_init_is_windows_9x == 0) |
f60ae425 | 161 | { |
9785d95b BK |
162 | g_b_init_is_windows_9x = 1; |
163 | ZeroMemory(&os_ver, sizeof(OSVERSIONINFO)); | |
164 | os_ver.dwOSVersionInfoSize = sizeof(OSVERSIONINFO); | |
165 | if (GetVersionEx (&os_ver)) | |
166 | { | |
167 | s_b_ret = (os_ver.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS); | |
168 | } | |
f60ae425 | 169 | } |
9785d95b | 170 | return s_b_ret; |
f60ae425 BK |
171 | } |
172 | ||
173 | /* ** The wrapper functions ** */ | |
174 | ||
175 | BOOL WINAPI open_process_token ( | |
176 | HANDLE ProcessHandle, | |
177 | DWORD DesiredAccess, | |
178 | PHANDLE TokenHandle) | |
179 | { | |
9785d95b | 180 | static OpenProcessToken_Proc s_pfn_Open_Process_Token = NULL; |
f60ae425 BK |
181 | HMODULE hm_advapi32 = NULL; |
182 | if (is_windows_9x () == TRUE) | |
183 | { | |
184 | return FALSE; | |
185 | } | |
9785d95b BK |
186 | if (g_b_init_open_process_token == 0) |
187 | { | |
188 | g_b_init_open_process_token = 1; | |
189 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
190 | s_pfn_Open_Process_Token = | |
191 | (OpenProcessToken_Proc) GetProcAddress (hm_advapi32, "OpenProcessToken"); | |
192 | } | |
193 | if (s_pfn_Open_Process_Token == NULL) | |
f60ae425 BK |
194 | { |
195 | return FALSE; | |
196 | } | |
197 | return ( | |
9785d95b | 198 | s_pfn_Open_Process_Token ( |
f60ae425 BK |
199 | ProcessHandle, |
200 | DesiredAccess, | |
201 | TokenHandle) | |
202 | ); | |
203 | } | |
204 | ||
205 | BOOL WINAPI get_token_information ( | |
206 | HANDLE TokenHandle, | |
207 | TOKEN_INFORMATION_CLASS TokenInformationClass, | |
208 | LPVOID TokenInformation, | |
209 | DWORD TokenInformationLength, | |
210 | PDWORD ReturnLength) | |
211 | { | |
9785d95b | 212 | static GetTokenInformation_Proc s_pfn_Get_Token_Information = NULL; |
f60ae425 BK |
213 | HMODULE hm_advapi32 = NULL; |
214 | if (is_windows_9x () == TRUE) | |
215 | { | |
216 | return FALSE; | |
217 | } | |
9785d95b BK |
218 | if (g_b_init_get_token_information == 0) |
219 | { | |
220 | g_b_init_get_token_information = 1; | |
221 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
222 | s_pfn_Get_Token_Information = | |
223 | (GetTokenInformation_Proc) GetProcAddress (hm_advapi32, "GetTokenInformation"); | |
224 | } | |
225 | if (s_pfn_Get_Token_Information == NULL) | |
f60ae425 BK |
226 | { |
227 | return FALSE; | |
228 | } | |
229 | return ( | |
9785d95b | 230 | s_pfn_Get_Token_Information ( |
f60ae425 BK |
231 | TokenHandle, |
232 | TokenInformationClass, | |
233 | TokenInformation, | |
234 | TokenInformationLength, | |
235 | ReturnLength) | |
236 | ); | |
237 | } | |
238 | ||
239 | BOOL WINAPI lookup_account_sid ( | |
240 | LPCTSTR lpSystemName, | |
241 | PSID Sid, | |
242 | LPTSTR Name, | |
243 | LPDWORD cbName, | |
244 | LPTSTR DomainName, | |
245 | LPDWORD cbDomainName, | |
246 | PSID_NAME_USE peUse) | |
247 | { | |
9785d95b | 248 | static LookupAccountSid_Proc s_pfn_Lookup_Account_Sid = NULL; |
f60ae425 BK |
249 | HMODULE hm_advapi32 = NULL; |
250 | if (is_windows_9x () == TRUE) | |
251 | { | |
252 | return FALSE; | |
253 | } | |
9785d95b BK |
254 | if (g_b_init_lookup_account_sid == 0) |
255 | { | |
256 | g_b_init_lookup_account_sid = 1; | |
257 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
258 | s_pfn_Lookup_Account_Sid = | |
259 | (LookupAccountSid_Proc) GetProcAddress (hm_advapi32, LookupAccountSid_Name); | |
260 | } | |
261 | if (s_pfn_Lookup_Account_Sid == NULL) | |
f60ae425 BK |
262 | { |
263 | return FALSE; | |
264 | } | |
265 | return ( | |
9785d95b | 266 | s_pfn_Lookup_Account_Sid ( |
f60ae425 BK |
267 | lpSystemName, |
268 | Sid, | |
269 | Name, | |
270 | cbName, | |
271 | DomainName, | |
272 | cbDomainName, | |
273 | peUse) | |
274 | ); | |
275 | } | |
276 | ||
277 | PSID_IDENTIFIER_AUTHORITY WINAPI get_sid_identifier_authority ( | |
278 | PSID pSid) | |
279 | { | |
9785d95b | 280 | static GetSidIdentifierAuthority_Proc s_pfn_Get_Sid_Identifier_Authority = NULL; |
f60ae425 BK |
281 | HMODULE hm_advapi32 = NULL; |
282 | if (is_windows_9x () == TRUE) | |
283 | { | |
284 | return NULL; | |
285 | } | |
9785d95b BK |
286 | if (g_b_init_get_sid_identifier_authority == 0) |
287 | { | |
288 | g_b_init_get_sid_identifier_authority = 1; | |
289 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
290 | s_pfn_Get_Sid_Identifier_Authority = | |
291 | (GetSidIdentifierAuthority_Proc) GetProcAddress ( | |
292 | hm_advapi32, "GetSidIdentifierAuthority"); | |
293 | } | |
294 | if (s_pfn_Get_Sid_Identifier_Authority == NULL) | |
f60ae425 BK |
295 | { |
296 | return NULL; | |
297 | } | |
9785d95b | 298 | return (s_pfn_Get_Sid_Identifier_Authority (pSid)); |
f60ae425 BK |
299 | } |
300 | ||
301 | /* | |
302 | END: Wrapper functions around OpenProcessToken | |
303 | and other functions in advapi32.dll that are only | |
304 | supported in Windows NT / 2k / XP | |
305 | */ | |
306 | ||
307 | \f | |
18e070ac AI |
308 | /* Equivalent of strerror for W32 error codes. */ |
309 | char * | |
310 | w32_strerror (int error_no) | |
311 | { | |
312 | static char buf[500]; | |
313 | ||
314 | if (error_no == 0) | |
315 | error_no = GetLastError (); | |
316 | ||
317 | buf[0] = '\0'; | |
318 | if (!FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM, NULL, | |
319 | error_no, | |
320 | 0, /* choose most suitable language */ | |
321 | buf, sizeof (buf), NULL)) | |
322 | sprintf (buf, "w32 error %u", error_no); | |
323 | return buf; | |
324 | } | |
325 | ||
ed91b2ad EZ |
326 | /* Return 1 if P is a valid pointer to an object of size SIZE. Return |
327 | 0 if P is NOT a valid pointer. Return -1 if we cannot validate P. | |
328 | ||
329 | This is called from alloc.c:valid_pointer_p. */ | |
330 | int | |
331 | w32_valid_pointer_p (void *p, int size) | |
332 | { | |
333 | SIZE_T done; | |
334 | HANDLE h = OpenProcess (PROCESS_VM_READ, FALSE, GetCurrentProcessId ()); | |
335 | ||
336 | if (h) | |
337 | { | |
338 | unsigned char *buf = alloca (size); | |
339 | int retval = ReadProcessMemory (h, p, buf, size, &done); | |
340 | ||
341 | CloseHandle (h); | |
342 | return retval; | |
343 | } | |
344 | else | |
345 | return -1; | |
346 | } | |
347 | ||
76b3903d | 348 | static char startup_dir[MAXPATHLEN]; |
00b3b7b3 | 349 | |
95ed0025 | 350 | /* Get the current working directory. */ |
480b0c5b | 351 | char * |
95ed0025 RS |
352 | getwd (char *dir) |
353 | { | |
76b3903d | 354 | #if 0 |
480b0c5b GV |
355 | if (GetCurrentDirectory (MAXPATHLEN, dir) > 0) |
356 | return dir; | |
357 | return NULL; | |
76b3903d GV |
358 | #else |
359 | /* Emacs doesn't actually change directory itself, and we want to | |
360 | force our real wd to be where emacs.exe is to avoid unnecessary | |
361 | conflicts when trying to rename or delete directories. */ | |
362 | strcpy (dir, startup_dir); | |
363 | return dir; | |
364 | #endif | |
95ed0025 RS |
365 | } |
366 | ||
480b0c5b | 367 | #ifndef HAVE_SOCKETS |
95ed0025 RS |
368 | /* Emulate gethostname. */ |
369 | int | |
370 | gethostname (char *buffer, int size) | |
371 | { | |
177c0ea7 | 372 | /* NT only allows small host names, so the buffer is |
95ed0025 RS |
373 | certainly large enough. */ |
374 | return !GetComputerName (buffer, &size); | |
375 | } | |
480b0c5b | 376 | #endif /* HAVE_SOCKETS */ |
95ed0025 RS |
377 | |
378 | /* Emulate getloadavg. */ | |
379 | int | |
380 | getloadavg (double loadavg[], int nelem) | |
381 | { | |
382 | int i; | |
383 | ||
384 | /* A faithful emulation is going to have to be saved for a rainy day. */ | |
177c0ea7 | 385 | for (i = 0; i < nelem; i++) |
95ed0025 RS |
386 | { |
387 | loadavg[i] = 0.0; | |
388 | } | |
389 | return i; | |
390 | } | |
391 | ||
480b0c5b | 392 | /* Emulate getpwuid, getpwnam and others. */ |
95ed0025 | 393 | |
051fe60d GV |
394 | #define PASSWD_FIELD_SIZE 256 |
395 | ||
396 | static char the_passwd_name[PASSWD_FIELD_SIZE]; | |
397 | static char the_passwd_passwd[PASSWD_FIELD_SIZE]; | |
398 | static char the_passwd_gecos[PASSWD_FIELD_SIZE]; | |
399 | static char the_passwd_dir[PASSWD_FIELD_SIZE]; | |
400 | static char the_passwd_shell[PASSWD_FIELD_SIZE]; | |
95ed0025 | 401 | |
177c0ea7 | 402 | static struct passwd the_passwd = |
95ed0025 RS |
403 | { |
404 | the_passwd_name, | |
405 | the_passwd_passwd, | |
406 | 0, | |
407 | 0, | |
408 | 0, | |
409 | the_passwd_gecos, | |
410 | the_passwd_dir, | |
411 | the_passwd_shell, | |
412 | }; | |
413 | ||
3d19b645 LH |
414 | static struct group the_group = |
415 | { | |
416 | /* There are no groups on NT, so we just return "root" as the | |
417 | group name. */ | |
418 | "root", | |
419 | }; | |
420 | ||
177c0ea7 JB |
421 | int |
422 | getuid () | |
423 | { | |
480b0c5b GV |
424 | return the_passwd.pw_uid; |
425 | } | |
426 | ||
177c0ea7 JB |
427 | int |
428 | geteuid () | |
429 | { | |
480b0c5b GV |
430 | /* I could imagine arguing for checking to see whether the user is |
431 | in the Administrators group and returning a UID of 0 for that | |
432 | case, but I don't know how wise that would be in the long run. */ | |
177c0ea7 | 433 | return getuid (); |
480b0c5b GV |
434 | } |
435 | ||
177c0ea7 JB |
436 | int |
437 | getgid () | |
438 | { | |
480b0c5b GV |
439 | return the_passwd.pw_gid; |
440 | } | |
441 | ||
177c0ea7 JB |
442 | int |
443 | getegid () | |
444 | { | |
480b0c5b GV |
445 | return getgid (); |
446 | } | |
447 | ||
95ed0025 RS |
448 | struct passwd * |
449 | getpwuid (int uid) | |
450 | { | |
480b0c5b GV |
451 | if (uid == the_passwd.pw_uid) |
452 | return &the_passwd; | |
453 | return NULL; | |
95ed0025 RS |
454 | } |
455 | ||
3d19b645 LH |
456 | struct group * |
457 | getgrgid (gid_t gid) | |
458 | { | |
459 | return &the_group; | |
460 | } | |
461 | ||
95ed0025 RS |
462 | struct passwd * |
463 | getpwnam (char *name) | |
464 | { | |
465 | struct passwd *pw; | |
177c0ea7 | 466 | |
95ed0025 RS |
467 | pw = getpwuid (getuid ()); |
468 | if (!pw) | |
469 | return pw; | |
470 | ||
480b0c5b | 471 | if (stricmp (name, pw->pw_name)) |
95ed0025 RS |
472 | return NULL; |
473 | ||
474 | return pw; | |
475 | } | |
476 | ||
480b0c5b GV |
477 | void |
478 | init_user_info () | |
95ed0025 | 479 | { |
480b0c5b GV |
480 | /* Find the user's real name by opening the process token and |
481 | looking up the name associated with the user-sid in that token. | |
482 | ||
483 | Use the relative portion of the identifier authority value from | |
484 | the user-sid as the user id value (same for group id using the | |
485 | primary group sid from the process token). */ | |
486 | ||
487 | char user_sid[256], name[256], domain[256]; | |
488 | DWORD length = sizeof (name), dlength = sizeof (domain), trash; | |
489 | HANDLE token = NULL; | |
490 | SID_NAME_USE user_type; | |
491 | ||
f60ae425 BK |
492 | if ( |
493 | open_process_token (GetCurrentProcess (), TOKEN_QUERY, &token) | |
494 | && get_token_information ( | |
495 | token, TokenUser, | |
480b0c5b | 496 | (PVOID) user_sid, sizeof (user_sid), &trash) |
f60ae425 BK |
497 | && lookup_account_sid ( |
498 | NULL, *((PSID *) user_sid), name, &length, | |
499 | domain, &dlength, &user_type) | |
500 | ) | |
d1c1c3d2 | 501 | { |
480b0c5b GV |
502 | strcpy (the_passwd.pw_name, name); |
503 | /* Determine a reasonable uid value. */ | |
504 | if (stricmp ("administrator", name) == 0) | |
505 | { | |
506 | the_passwd.pw_uid = 0; | |
507 | the_passwd.pw_gid = 0; | |
508 | } | |
509 | else | |
510 | { | |
511 | SID_IDENTIFIER_AUTHORITY * pSIA; | |
512 | ||
f60ae425 | 513 | pSIA = get_sid_identifier_authority (*((PSID *) user_sid)); |
480b0c5b GV |
514 | /* I believe the relative portion is the last 4 bytes (of 6) |
515 | with msb first. */ | |
516 | the_passwd.pw_uid = ((pSIA->Value[2] << 24) + | |
517 | (pSIA->Value[3] << 16) + | |
518 | (pSIA->Value[4] << 8) + | |
519 | (pSIA->Value[5] << 0)); | |
520 | /* restrict to conventional uid range for normal users */ | |
521 | the_passwd.pw_uid = the_passwd.pw_uid % 60001; | |
522 | ||
523 | /* Get group id */ | |
f60ae425 | 524 | if (get_token_information (token, TokenPrimaryGroup, |
480b0c5b GV |
525 | (PVOID) user_sid, sizeof (user_sid), &trash)) |
526 | { | |
527 | SID_IDENTIFIER_AUTHORITY * pSIA; | |
528 | ||
f60ae425 | 529 | pSIA = get_sid_identifier_authority (*((PSID *) user_sid)); |
480b0c5b GV |
530 | the_passwd.pw_gid = ((pSIA->Value[2] << 24) + |
531 | (pSIA->Value[3] << 16) + | |
532 | (pSIA->Value[4] << 8) + | |
533 | (pSIA->Value[5] << 0)); | |
534 | /* I don't know if this is necessary, but for safety... */ | |
535 | the_passwd.pw_gid = the_passwd.pw_gid % 60001; | |
536 | } | |
537 | else | |
538 | the_passwd.pw_gid = the_passwd.pw_uid; | |
539 | } | |
540 | } | |
541 | /* If security calls are not supported (presumably because we | |
542 | are running under Windows 95), fallback to this. */ | |
543 | else if (GetUserName (name, &length)) | |
544 | { | |
545 | strcpy (the_passwd.pw_name, name); | |
546 | if (stricmp ("administrator", name) == 0) | |
547 | the_passwd.pw_uid = 0; | |
548 | else | |
549 | the_passwd.pw_uid = 123; | |
550 | the_passwd.pw_gid = the_passwd.pw_uid; | |
551 | } | |
552 | else | |
553 | { | |
554 | strcpy (the_passwd.pw_name, "unknown"); | |
555 | the_passwd.pw_uid = 123; | |
556 | the_passwd.pw_gid = 123; | |
d1c1c3d2 | 557 | } |
95ed0025 | 558 | |
480b0c5b GV |
559 | /* Ensure HOME and SHELL are defined. */ |
560 | if (getenv ("HOME") == NULL) | |
ca149beb | 561 | abort (); |
480b0c5b | 562 | if (getenv ("SHELL") == NULL) |
ca149beb | 563 | abort (); |
95ed0025 | 564 | |
480b0c5b GV |
565 | /* Set dir and shell from environment variables. */ |
566 | strcpy (the_passwd.pw_dir, getenv ("HOME")); | |
567 | strcpy (the_passwd.pw_shell, getenv ("SHELL")); | |
bd4a449f | 568 | |
480b0c5b GV |
569 | if (token) |
570 | CloseHandle (token); | |
95ed0025 RS |
571 | } |
572 | ||
95ed0025 | 573 | int |
480b0c5b | 574 | random () |
95ed0025 | 575 | { |
480b0c5b GV |
576 | /* rand () on NT gives us 15 random bits...hack together 30 bits. */ |
577 | return ((rand () << 15) | rand ()); | |
95ed0025 RS |
578 | } |
579 | ||
95ed0025 | 580 | void |
480b0c5b | 581 | srandom (int seed) |
95ed0025 | 582 | { |
480b0c5b | 583 | srand (seed); |
95ed0025 RS |
584 | } |
585 | ||
76b3903d | 586 | |
cbe39279 RS |
587 | /* Normalize filename by converting all path separators to |
588 | the specified separator. Also conditionally convert upper | |
589 | case path name components to lower case. */ | |
590 | ||
591 | static void | |
592 | normalize_filename (fp, path_sep) | |
593 | register char *fp; | |
594 | char path_sep; | |
595 | { | |
596 | char sep; | |
597 | char *elem; | |
598 | ||
5162ffce MB |
599 | /* Always lower-case drive letters a-z, even if the filesystem |
600 | preserves case in filenames. | |
601 | This is so filenames can be compared by string comparison | |
602 | functions that are case-sensitive. Even case-preserving filesystems | |
603 | do not distinguish case in drive letters. */ | |
604 | if (fp[1] == ':' && *fp >= 'A' && *fp <= 'Z') | |
605 | { | |
606 | *fp += 'a' - 'A'; | |
607 | fp += 2; | |
608 | } | |
609 | ||
fbd6baed | 610 | if (NILP (Vw32_downcase_file_names)) |
cbe39279 RS |
611 | { |
612 | while (*fp) | |
613 | { | |
614 | if (*fp == '/' || *fp == '\\') | |
615 | *fp = path_sep; | |
616 | fp++; | |
617 | } | |
618 | return; | |
619 | } | |
620 | ||
621 | sep = path_sep; /* convert to this path separator */ | |
622 | elem = fp; /* start of current path element */ | |
623 | ||
624 | do { | |
625 | if (*fp >= 'a' && *fp <= 'z') | |
626 | elem = 0; /* don't convert this element */ | |
627 | ||
628 | if (*fp == 0 || *fp == ':') | |
629 | { | |
630 | sep = *fp; /* restore current separator (or 0) */ | |
631 | *fp = '/'; /* after conversion of this element */ | |
632 | } | |
633 | ||
634 | if (*fp == '/' || *fp == '\\') | |
635 | { | |
636 | if (elem && elem != fp) | |
637 | { | |
638 | *fp = 0; /* temporary end of string */ | |
639 | _strlwr (elem); /* while we convert to lower case */ | |
640 | } | |
641 | *fp = sep; /* convert (or restore) path separator */ | |
642 | elem = fp + 1; /* next element starts after separator */ | |
643 | sep = path_sep; | |
644 | } | |
645 | } while (*fp++); | |
646 | } | |
647 | ||
480b0c5b | 648 | /* Destructively turn backslashes into slashes. */ |
95ed0025 | 649 | void |
480b0c5b GV |
650 | dostounix_filename (p) |
651 | register char *p; | |
95ed0025 | 652 | { |
cbe39279 | 653 | normalize_filename (p, '/'); |
95ed0025 RS |
654 | } |
655 | ||
480b0c5b | 656 | /* Destructively turn slashes into backslashes. */ |
95ed0025 | 657 | void |
480b0c5b GV |
658 | unixtodos_filename (p) |
659 | register char *p; | |
95ed0025 | 660 | { |
cbe39279 | 661 | normalize_filename (p, '\\'); |
95ed0025 RS |
662 | } |
663 | ||
480b0c5b GV |
664 | /* Remove all CR's that are followed by a LF. |
665 | (From msdos.c...probably should figure out a way to share it, | |
666 | although this code isn't going to ever change.) */ | |
35f0d482 | 667 | int |
480b0c5b GV |
668 | crlf_to_lf (n, buf) |
669 | register int n; | |
670 | register unsigned char *buf; | |
35f0d482 | 671 | { |
480b0c5b GV |
672 | unsigned char *np = buf; |
673 | unsigned char *startp = buf; | |
674 | unsigned char *endp = buf + n; | |
35f0d482 | 675 | |
480b0c5b GV |
676 | if (n == 0) |
677 | return n; | |
678 | while (buf < endp - 1) | |
95ed0025 | 679 | { |
480b0c5b GV |
680 | if (*buf == 0x0d) |
681 | { | |
682 | if (*(++buf) != 0x0a) | |
683 | *np++ = 0x0d; | |
684 | } | |
685 | else | |
686 | *np++ = *buf++; | |
95ed0025 | 687 | } |
480b0c5b GV |
688 | if (buf < endp) |
689 | *np++ = *buf++; | |
690 | return np - startp; | |
95ed0025 RS |
691 | } |
692 | ||
76b3903d GV |
693 | /* Parse the root part of file name, if present. Return length and |
694 | optionally store pointer to char after root. */ | |
695 | static int | |
696 | parse_root (char * name, char ** pPath) | |
697 | { | |
698 | char * start = name; | |
699 | ||
700 | if (name == NULL) | |
701 | return 0; | |
702 | ||
703 | /* find the root name of the volume if given */ | |
704 | if (isalpha (name[0]) && name[1] == ':') | |
705 | { | |
706 | /* skip past drive specifier */ | |
707 | name += 2; | |
708 | if (IS_DIRECTORY_SEP (name[0])) | |
709 | name++; | |
710 | } | |
711 | else if (IS_DIRECTORY_SEP (name[0]) && IS_DIRECTORY_SEP (name[1])) | |
712 | { | |
713 | int slashes = 2; | |
714 | name += 2; | |
715 | do | |
716 | { | |
717 | if (IS_DIRECTORY_SEP (*name) && --slashes == 0) | |
718 | break; | |
719 | name++; | |
720 | } | |
721 | while ( *name ); | |
722 | if (IS_DIRECTORY_SEP (name[0])) | |
723 | name++; | |
724 | } | |
725 | ||
726 | if (pPath) | |
727 | *pPath = name; | |
728 | ||
729 | return name - start; | |
730 | } | |
731 | ||
732 | /* Get long base name for name; name is assumed to be absolute. */ | |
733 | static int | |
734 | get_long_basename (char * name, char * buf, int size) | |
735 | { | |
736 | WIN32_FIND_DATA find_data; | |
737 | HANDLE dir_handle; | |
738 | int len = 0; | |
739 | ||
9ab8560d | 740 | /* must be valid filename, no wild cards or other invalid characters */ |
bb1584c8 RS |
741 | if (strpbrk (name, "*?|<>\"")) |
742 | return 0; | |
743 | ||
76b3903d GV |
744 | dir_handle = FindFirstFile (name, &find_data); |
745 | if (dir_handle != INVALID_HANDLE_VALUE) | |
746 | { | |
747 | if ((len = strlen (find_data.cFileName)) < size) | |
748 | memcpy (buf, find_data.cFileName, len + 1); | |
749 | else | |
750 | len = 0; | |
751 | FindClose (dir_handle); | |
752 | } | |
753 | return len; | |
754 | } | |
755 | ||
756 | /* Get long name for file, if possible (assumed to be absolute). */ | |
757 | BOOL | |
758 | w32_get_long_filename (char * name, char * buf, int size) | |
759 | { | |
760 | char * o = buf; | |
761 | char * p; | |
762 | char * q; | |
763 | char full[ MAX_PATH ]; | |
764 | int len; | |
765 | ||
766 | len = strlen (name); | |
767 | if (len >= MAX_PATH) | |
768 | return FALSE; | |
769 | ||
770 | /* Use local copy for destructive modification. */ | |
771 | memcpy (full, name, len+1); | |
772 | unixtodos_filename (full); | |
773 | ||
774 | /* Copy root part verbatim. */ | |
775 | len = parse_root (full, &p); | |
776 | memcpy (o, full, len); | |
777 | o += len; | |
4f8ac0b2 | 778 | *o = '\0'; |
76b3903d GV |
779 | size -= len; |
780 | ||
4f8ac0b2 | 781 | while (p != NULL && *p) |
76b3903d GV |
782 | { |
783 | q = p; | |
784 | p = strchr (q, '\\'); | |
785 | if (p) *p = '\0'; | |
786 | len = get_long_basename (full, o, size); | |
787 | if (len > 0) | |
788 | { | |
789 | o += len; | |
790 | size -= len; | |
791 | if (p != NULL) | |
792 | { | |
793 | *p++ = '\\'; | |
794 | if (size < 2) | |
795 | return FALSE; | |
796 | *o++ = '\\'; | |
797 | size--; | |
798 | *o = '\0'; | |
799 | } | |
800 | } | |
801 | else | |
802 | return FALSE; | |
803 | } | |
76b3903d GV |
804 | |
805 | return TRUE; | |
806 | } | |
807 | ||
9d3355d1 GV |
808 | int |
809 | is_unc_volume (const char *filename) | |
810 | { | |
811 | const char *ptr = filename; | |
812 | ||
813 | if (!IS_DIRECTORY_SEP (ptr[0]) || !IS_DIRECTORY_SEP (ptr[1]) || !ptr[2]) | |
814 | return 0; | |
815 | ||
816 | if (strpbrk (ptr + 2, "*?|<>\"\\/")) | |
817 | return 0; | |
818 | ||
819 | return 1; | |
820 | } | |
76b3903d | 821 | |
95ed0025 RS |
822 | /* Routines that are no-ops on NT but are defined to get Emacs to compile. */ |
823 | ||
177c0ea7 JB |
824 | int |
825 | sigsetmask (int signal_mask) | |
826 | { | |
95ed0025 RS |
827 | return 0; |
828 | } | |
829 | ||
177c0ea7 JB |
830 | int |
831 | sigmask (int sig) | |
832 | { | |
8f900f6e AI |
833 | return 0; |
834 | } | |
835 | ||
177c0ea7 JB |
836 | int |
837 | sigblock (int sig) | |
838 | { | |
95ed0025 RS |
839 | return 0; |
840 | } | |
841 | ||
177c0ea7 JB |
842 | int |
843 | sigunblock (int sig) | |
844 | { | |
8f900f6e AI |
845 | return 0; |
846 | } | |
847 | ||
177c0ea7 JB |
848 | int |
849 | setpgrp (int pid, int gid) | |
850 | { | |
95ed0025 RS |
851 | return 0; |
852 | } | |
853 | ||
177c0ea7 JB |
854 | int |
855 | alarm (int seconds) | |
856 | { | |
95ed0025 RS |
857 | return 0; |
858 | } | |
859 | ||
177c0ea7 JB |
860 | void |
861 | unrequest_sigio (void) | |
862 | { | |
c6624584 | 863 | return; |
95ed0025 RS |
864 | } |
865 | ||
c6624584 | 866 | void |
177c0ea7 JB |
867 | request_sigio (void) |
868 | { | |
c6624584 | 869 | return; |
95ed0025 RS |
870 | } |
871 | ||
480b0c5b | 872 | #define REG_ROOT "SOFTWARE\\GNU\\Emacs" |
f332b293 | 873 | |
177c0ea7 | 874 | LPBYTE |
fbd6baed | 875 | w32_get_resource (key, lpdwtype) |
f332b293 GV |
876 | char *key; |
877 | LPDWORD lpdwtype; | |
878 | { | |
879 | LPBYTE lpvalue; | |
880 | HKEY hrootkey = NULL; | |
881 | DWORD cbData; | |
882 | BOOL ok = FALSE; | |
177c0ea7 JB |
883 | |
884 | /* Check both the current user and the local machine to see if | |
f332b293 | 885 | we have any resources. */ |
177c0ea7 | 886 | |
f332b293 GV |
887 | if (RegOpenKeyEx (HKEY_CURRENT_USER, REG_ROOT, 0, KEY_READ, &hrootkey) == ERROR_SUCCESS) |
888 | { | |
889 | lpvalue = NULL; | |
890 | ||
177c0ea7 JB |
891 | if (RegQueryValueEx (hrootkey, key, NULL, NULL, NULL, &cbData) == ERROR_SUCCESS |
892 | && (lpvalue = (LPBYTE) xmalloc (cbData)) != NULL | |
f332b293 GV |
893 | && RegQueryValueEx (hrootkey, key, NULL, lpdwtype, lpvalue, &cbData) == ERROR_SUCCESS) |
894 | { | |
895 | return (lpvalue); | |
896 | } | |
897 | ||
898 | if (lpvalue) xfree (lpvalue); | |
177c0ea7 | 899 | |
f332b293 | 900 | RegCloseKey (hrootkey); |
177c0ea7 JB |
901 | } |
902 | ||
f332b293 GV |
903 | if (RegOpenKeyEx (HKEY_LOCAL_MACHINE, REG_ROOT, 0, KEY_READ, &hrootkey) == ERROR_SUCCESS) |
904 | { | |
905 | lpvalue = NULL; | |
177c0ea7 | 906 | |
76b3903d GV |
907 | if (RegQueryValueEx (hrootkey, key, NULL, NULL, NULL, &cbData) == ERROR_SUCCESS |
908 | && (lpvalue = (LPBYTE) xmalloc (cbData)) != NULL | |
909 | && RegQueryValueEx (hrootkey, key, NULL, lpdwtype, lpvalue, &cbData) == ERROR_SUCCESS) | |
f332b293 GV |
910 | { |
911 | return (lpvalue); | |
912 | } | |
177c0ea7 | 913 | |
f332b293 | 914 | if (lpvalue) xfree (lpvalue); |
177c0ea7 | 915 | |
f332b293 | 916 | RegCloseKey (hrootkey); |
177c0ea7 JB |
917 | } |
918 | ||
f332b293 GV |
919 | return (NULL); |
920 | } | |
921 | ||
75b08edb GV |
922 | char *get_emacs_configuration (void); |
923 | extern Lisp_Object Vsystem_configuration; | |
924 | ||
f332b293 | 925 | void |
aa7b87b0 | 926 | init_environment (char ** argv) |
f332b293 | 927 | { |
b3308d2e KH |
928 | static const char * const tempdirs[] = { |
929 | "$TMPDIR", "$TEMP", "$TMP", "c:/" | |
930 | }; | |
2d5324c5 | 931 | |
b3308d2e | 932 | int i; |
2d5324c5 | 933 | |
b3308d2e KH |
934 | const int imax = sizeof (tempdirs) / sizeof (tempdirs[0]); |
935 | ||
936 | /* Make sure they have a usable $TMPDIR. Many Emacs functions use | |
937 | temporary files and assume "/tmp" if $TMPDIR is unset, which | |
938 | will break on DOS/Windows. Refuse to work if we cannot find | |
939 | a directory, not even "c:/", usable for that purpose. */ | |
940 | for (i = 0; i < imax ; i++) | |
941 | { | |
942 | const char *tmp = tempdirs[i]; | |
943 | ||
944 | if (*tmp == '$') | |
945 | tmp = getenv (tmp + 1); | |
946 | /* Note that `access' can lie to us if the directory resides on a | |
947 | read-only filesystem, like CD-ROM or a write-protected floppy. | |
948 | The only way to be really sure is to actually create a file and | |
949 | see if it succeeds. But I think that's too much to ask. */ | |
a302c7ae | 950 | if (tmp && _access (tmp, D_OK) == 0) |
b3308d2e KH |
951 | { |
952 | char * var = alloca (strlen (tmp) + 8); | |
953 | sprintf (var, "TMPDIR=%s", tmp); | |
aca583b2 | 954 | _putenv (strdup (var)); |
b3308d2e KH |
955 | break; |
956 | } | |
957 | } | |
958 | if (i >= imax) | |
959 | cmd_error_internal | |
960 | (Fcons (Qerror, | |
961 | Fcons (build_string ("no usable temporary directories found!!"), | |
962 | Qnil)), | |
963 | "While setting TMPDIR: "); | |
964 | ||
ca149beb AI |
965 | /* Check for environment variables and use registry settings if they |
966 | don't exist. Fallback on default values where applicable. */ | |
f332b293 | 967 | { |
480b0c5b GV |
968 | int i; |
969 | LPBYTE lpval; | |
970 | DWORD dwType; | |
69fb0241 | 971 | char locale_name[32]; |
2d5324c5 JR |
972 | struct stat ignored; |
973 | char default_home[MAX_PATH]; | |
f332b293 | 974 | |
e00b99c8 | 975 | static const struct env_entry |
ca149beb AI |
976 | { |
977 | char * name; | |
978 | char * def_value; | |
e00b99c8 | 979 | } dflt_envvars[] = |
ca149beb AI |
980 | { |
981 | {"HOME", "C:/"}, | |
982 | {"PRELOAD_WINSOCK", NULL}, | |
983 | {"emacs_dir", "C:/emacs"}, | |
cc14250a | 984 | {"EMACSLOADPATH", "%emacs_dir%/site-lisp;%emacs_dir%/../site-lisp;%emacs_dir%/lisp;%emacs_dir%/leim"}, |
ca149beb AI |
985 | {"SHELL", "%emacs_dir%/bin/cmdproxy.exe"}, |
986 | {"EMACSDATA", "%emacs_dir%/etc"}, | |
987 | {"EMACSPATH", "%emacs_dir%/bin"}, | |
76b3903d | 988 | /* We no longer set INFOPATH because Info-default-directory-list |
ca149beb AI |
989 | is then ignored. */ |
990 | /* {"INFOPATH", "%emacs_dir%/info"}, */ | |
991 | {"EMACSDOC", "%emacs_dir%/etc"}, | |
69fb0241 JR |
992 | {"TERM", "cmd"}, |
993 | {"LANG", NULL}, | |
480b0c5b GV |
994 | }; |
995 | ||
e00b99c8 EZ |
996 | #define N_ENV_VARS sizeof(dflt_envvars)/sizeof(dflt_envvars[0]) |
997 | ||
998 | /* We need to copy dflt_envvars[] and work on the copy because we | |
999 | don't want the dumped Emacs to inherit the values of | |
1000 | environment variables we saw during dumping (which could be on | |
1001 | a different system). The defaults above must be left intact. */ | |
1002 | struct env_entry env_vars[N_ENV_VARS]; | |
1003 | ||
1004 | for (i = 0; i < N_ENV_VARS; i++) | |
1005 | env_vars[i] = dflt_envvars[i]; | |
1006 | ||
2d5324c5 JR |
1007 | /* For backwards compatibility, check if a .emacs file exists in C:/ |
1008 | If not, then we can try to default to the appdata directory under the | |
1009 | user's profile, which is more likely to be writable. */ | |
1010 | if (stat ("C:/.emacs", &ignored) < 0) | |
1011 | { | |
1012 | HRESULT profile_result; | |
1013 | /* Dynamically load ShGetFolderPath, as it won't exist on versions | |
1014 | of Windows 95 and NT4 that have not been updated to include | |
1015 | MSIE 5. Also we don't link with shell32.dll by default. */ | |
1016 | HMODULE shell32_dll; | |
1017 | ShGetFolderPath_fn get_folder_path; | |
1018 | shell32_dll = GetModuleHandle ("shell32.dll"); | |
1019 | get_folder_path = (ShGetFolderPath_fn) | |
1020 | GetProcAddress (shell32_dll, "SHGetFolderPathA"); | |
1021 | ||
1022 | if (get_folder_path != NULL) | |
1023 | { | |
1024 | profile_result = get_folder_path (NULL, CSIDL_APPDATA, NULL, | |
1025 | 0, default_home); | |
1026 | ||
1027 | /* If we can't get the appdata dir, revert to old behaviour. */ | |
1028 | if (profile_result == S_OK) | |
1029 | env_vars[0].def_value = default_home; | |
1030 | } | |
1031 | ||
1032 | /* Unload shell32.dll, it is not needed anymore. */ | |
1033 | FreeLibrary (shell32_dll); | |
1034 | } | |
1035 | ||
69fb0241 JR |
1036 | /* Get default locale info and use it for LANG. */ |
1037 | if (GetLocaleInfo (LOCALE_USER_DEFAULT, | |
1038 | LOCALE_SABBREVLANGNAME | LOCALE_USE_CP_ACP, | |
1039 | locale_name, sizeof (locale_name))) | |
1040 | { | |
e00b99c8 | 1041 | for (i = 0; i < N_ENV_VARS; i++) |
69fb0241 JR |
1042 | { |
1043 | if (strcmp (env_vars[i].name, "LANG") == 0) | |
1044 | { | |
1045 | env_vars[i].def_value = locale_name; | |
1046 | break; | |
1047 | } | |
1048 | } | |
1049 | } | |
1050 | ||
ca149beb AI |
1051 | #define SET_ENV_BUF_SIZE (4 * MAX_PATH) /* to cover EMACSLOADPATH */ |
1052 | ||
1053 | /* Treat emacs_dir specially: set it unconditionally based on our | |
1054 | location, if it appears that we are running from the bin subdir | |
1055 | of a standard installation. */ | |
1056 | { | |
1057 | char *p; | |
1058 | char modname[MAX_PATH]; | |
1059 | ||
1060 | if (!GetModuleFileName (NULL, modname, MAX_PATH)) | |
1061 | abort (); | |
1062 | if ((p = strrchr (modname, '\\')) == NULL) | |
1063 | abort (); | |
1064 | *p = 0; | |
1065 | ||
1066 | if ((p = strrchr (modname, '\\')) && stricmp (p, "\\bin") == 0) | |
1067 | { | |
1068 | char buf[SET_ENV_BUF_SIZE]; | |
1069 | ||
1070 | *p = 0; | |
1071 | for (p = modname; *p; p++) | |
1072 | if (*p == '\\') *p = '/'; | |
177c0ea7 | 1073 | |
ca149beb | 1074 | _snprintf (buf, sizeof(buf)-1, "emacs_dir=%s", modname); |
a302c7ae | 1075 | _putenv (strdup (buf)); |
ca149beb | 1076 | } |
950090be JR |
1077 | /* Handle running emacs from the build directory: src/oo-spd/i386/ */ |
1078 | ||
1079 | /* FIXME: should use substring of get_emacs_configuration (). | |
1080 | But I don't think the Windows build supports alpha, mips etc | |
1081 | anymore, so have taken the easy option for now. */ | |
1082 | else if (p && stricmp (p, "\\i386") == 0) | |
1083 | { | |
1084 | *p = 0; | |
1085 | p = strrchr (modname, '\\'); | |
1086 | if (p != NULL) | |
1087 | { | |
1088 | *p = 0; | |
1089 | p = strrchr (modname, '\\'); | |
1090 | if (p && stricmp (p, "\\src") == 0) | |
1091 | { | |
1092 | char buf[SET_ENV_BUF_SIZE]; | |
1093 | ||
1094 | *p = 0; | |
1095 | for (p = modname; *p; p++) | |
1096 | if (*p == '\\') *p = '/'; | |
1097 | ||
1098 | _snprintf (buf, sizeof(buf)-1, "emacs_dir=%s", modname); | |
1099 | _putenv (strdup (buf)); | |
1100 | } | |
1101 | } | |
1102 | } | |
ca149beb AI |
1103 | } |
1104 | ||
e00b99c8 | 1105 | for (i = 0; i < N_ENV_VARS; i++) |
f332b293 | 1106 | { |
ca149beb | 1107 | if (!getenv (env_vars[i].name)) |
480b0c5b | 1108 | { |
ca149beb | 1109 | int dont_free = 0; |
480b0c5b | 1110 | |
ca149beb AI |
1111 | if ((lpval = w32_get_resource (env_vars[i].name, &dwType)) == NULL) |
1112 | { | |
1113 | lpval = env_vars[i].def_value; | |
1114 | dwType = REG_EXPAND_SZ; | |
1115 | dont_free = 1; | |
480b0c5b | 1116 | } |
ca149beb AI |
1117 | |
1118 | if (lpval) | |
480b0c5b | 1119 | { |
892eb237 | 1120 | char buf1[SET_ENV_BUF_SIZE], buf2[SET_ENV_BUF_SIZE]; |
ca149beb | 1121 | |
892eb237 EZ |
1122 | if (dwType == REG_EXPAND_SZ) |
1123 | ExpandEnvironmentStrings ((LPSTR) lpval, buf1, sizeof(buf1)); | |
ca149beb | 1124 | else if (dwType == REG_SZ) |
892eb237 EZ |
1125 | strcpy (buf1, lpval); |
1126 | if (dwType == REG_EXPAND_SZ || dwType == REG_SZ) | |
ca149beb | 1127 | { |
892eb237 EZ |
1128 | _snprintf (buf2, sizeof(buf2)-1, "%s=%s", env_vars[i].name, |
1129 | buf1); | |
1130 | _putenv (strdup (buf2)); | |
ca149beb | 1131 | } |
f332b293 | 1132 | |
ca149beb AI |
1133 | if (!dont_free) |
1134 | xfree (lpval); | |
1135 | } | |
480b0c5b GV |
1136 | } |
1137 | } | |
1138 | } | |
1139 | ||
75b08edb GV |
1140 | /* Rebuild system configuration to reflect invoking system. */ |
1141 | Vsystem_configuration = build_string (EMACS_CONFIGURATION); | |
1142 | ||
76b3903d GV |
1143 | /* Another special case: on NT, the PATH variable is actually named |
1144 | "Path" although cmd.exe (perhaps NT itself) arranges for | |
1145 | environment variable lookup and setting to be case insensitive. | |
1146 | However, Emacs assumes a fully case sensitive environment, so we | |
1147 | need to change "Path" to "PATH" to match the expectations of | |
1148 | various elisp packages. We do this by the sneaky method of | |
1149 | modifying the string in the C runtime environ entry. | |
1150 | ||
1151 | The same applies to COMSPEC. */ | |
1152 | { | |
1153 | char ** envp; | |
1154 | ||
1155 | for (envp = environ; *envp; envp++) | |
1156 | if (_strnicmp (*envp, "PATH=", 5) == 0) | |
1157 | memcpy (*envp, "PATH=", 5); | |
1158 | else if (_strnicmp (*envp, "COMSPEC=", 8) == 0) | |
1159 | memcpy (*envp, "COMSPEC=", 8); | |
1160 | } | |
1161 | ||
1162 | /* Remember the initial working directory for getwd, then make the | |
1163 | real wd be the location of emacs.exe to avoid conflicts when | |
1164 | renaming or deleting directories. (We also don't call chdir when | |
1165 | running subprocesses for the same reason.) */ | |
1166 | if (!GetCurrentDirectory (MAXPATHLEN, startup_dir)) | |
1167 | abort (); | |
1168 | ||
1169 | { | |
1170 | char *p; | |
aa7b87b0 | 1171 | static char modname[MAX_PATH]; |
76b3903d GV |
1172 | |
1173 | if (!GetModuleFileName (NULL, modname, MAX_PATH)) | |
1174 | abort (); | |
1175 | if ((p = strrchr (modname, '\\')) == NULL) | |
1176 | abort (); | |
1177 | *p = 0; | |
1178 | ||
1179 | SetCurrentDirectory (modname); | |
aa7b87b0 AI |
1180 | |
1181 | /* Ensure argv[0] has the full path to Emacs. */ | |
1182 | *p = '\\'; | |
1183 | argv[0] = modname; | |
76b3903d GV |
1184 | } |
1185 | ||
20af4831 JR |
1186 | /* Determine if there is a middle mouse button, to allow parse_button |
1187 | to decide whether right mouse events should be mouse-2 or | |
1188 | mouse-3. */ | |
e0c181dd | 1189 | w32_num_mouse_buttons = GetSystemMetrics (SM_CMOUSEBUTTONS); |
20af4831 | 1190 | |
480b0c5b GV |
1191 | init_user_info (); |
1192 | } | |
1193 | ||
bf794306 EZ |
1194 | char * |
1195 | emacs_root_dir (void) | |
1196 | { | |
1197 | static char root_dir[FILENAME_MAX]; | |
1198 | const char *p; | |
1199 | ||
1200 | p = getenv ("emacs_dir"); | |
1201 | if (p == NULL) | |
1202 | abort (); | |
1203 | strcpy (root_dir, p); | |
1204 | root_dir[parse_root (root_dir, NULL)] = '\0'; | |
1205 | dostounix_filename (root_dir); | |
1206 | return root_dir; | |
1207 | } | |
1208 | ||
480b0c5b GV |
1209 | /* We don't have scripts to automatically determine the system configuration |
1210 | for Emacs before it's compiled, and we don't want to have to make the | |
1211 | user enter it, so we define EMACS_CONFIGURATION to invoke this runtime | |
1212 | routine. */ | |
1213 | ||
480b0c5b GV |
1214 | char * |
1215 | get_emacs_configuration (void) | |
1216 | { | |
1217 | char *arch, *oem, *os; | |
c5247da2 | 1218 | int build_num; |
a302c7ae | 1219 | static char configuration_buffer[32]; |
480b0c5b GV |
1220 | |
1221 | /* Determine the processor type. */ | |
177c0ea7 | 1222 | switch (get_processor_type ()) |
480b0c5b GV |
1223 | { |
1224 | ||
1225 | #ifdef PROCESSOR_INTEL_386 | |
1226 | case PROCESSOR_INTEL_386: | |
1227 | case PROCESSOR_INTEL_486: | |
1228 | case PROCESSOR_INTEL_PENTIUM: | |
1229 | arch = "i386"; | |
1230 | break; | |
1231 | #endif | |
1232 | ||
1233 | #ifdef PROCESSOR_INTEL_860 | |
1234 | case PROCESSOR_INTEL_860: | |
1235 | arch = "i860"; | |
1236 | break; | |
1237 | #endif | |
1238 | ||
1239 | #ifdef PROCESSOR_MIPS_R2000 | |
1240 | case PROCESSOR_MIPS_R2000: | |
1241 | case PROCESSOR_MIPS_R3000: | |
1242 | case PROCESSOR_MIPS_R4000: | |
1243 | arch = "mips"; | |
1244 | break; | |
1245 | #endif | |
1246 | ||
1247 | #ifdef PROCESSOR_ALPHA_21064 | |
1248 | case PROCESSOR_ALPHA_21064: | |
1249 | arch = "alpha"; | |
1250 | break; | |
1251 | #endif | |
1252 | ||
1253 | default: | |
1254 | arch = "unknown"; | |
1255 | break; | |
f332b293 | 1256 | } |
480b0c5b | 1257 | |
a302c7ae AI |
1258 | /* Use the OEM field to reflect the compiler/library combination. */ |
1259 | #ifdef _MSC_VER | |
1260 | #define COMPILER_NAME "msvc" | |
1261 | #else | |
1262 | #ifdef __GNUC__ | |
1263 | #define COMPILER_NAME "mingw" | |
1264 | #else | |
1265 | #define COMPILER_NAME "unknown" | |
1266 | #endif | |
1267 | #endif | |
1268 | oem = COMPILER_NAME; | |
480b0c5b | 1269 | |
c5247da2 GV |
1270 | switch (osinfo_cache.dwPlatformId) { |
1271 | case VER_PLATFORM_WIN32_NT: | |
1272 | os = "nt"; | |
1273 | build_num = osinfo_cache.dwBuildNumber; | |
1274 | break; | |
1275 | case VER_PLATFORM_WIN32_WINDOWS: | |
1276 | if (osinfo_cache.dwMinorVersion == 0) { | |
1277 | os = "windows95"; | |
1278 | } else { | |
1279 | os = "windows98"; | |
1280 | } | |
1281 | build_num = LOWORD (osinfo_cache.dwBuildNumber); | |
1282 | break; | |
1283 | case VER_PLATFORM_WIN32s: | |
1284 | /* Not supported, should not happen. */ | |
1285 | os = "windows32s"; | |
1286 | build_num = LOWORD (osinfo_cache.dwBuildNumber); | |
1287 | break; | |
1288 | default: | |
1289 | os = "unknown"; | |
1290 | build_num = 0; | |
1291 | break; | |
1292 | } | |
1293 | ||
1294 | if (osinfo_cache.dwPlatformId == VER_PLATFORM_WIN32_NT) { | |
1295 | sprintf (configuration_buffer, "%s-%s-%s%d.%d.%d", arch, oem, os, | |
1296 | get_w32_major_version (), get_w32_minor_version (), build_num); | |
1297 | } else { | |
1298 | sprintf (configuration_buffer, "%s-%s-%s.%d", arch, oem, os, build_num); | |
1299 | } | |
480b0c5b | 1300 | |
480b0c5b | 1301 | return configuration_buffer; |
f332b293 GV |
1302 | } |
1303 | ||
a302c7ae AI |
1304 | char * |
1305 | get_emacs_configuration_options (void) | |
1306 | { | |
1307 | static char options_buffer[256]; | |
1308 | ||
1309 | /* Work out the effective configure options for this build. */ | |
1310 | #ifdef _MSC_VER | |
1311 | #define COMPILER_VERSION "--with-msvc (%d.%02d)", _MSC_VER / 100, _MSC_VER % 100 | |
1312 | #else | |
1313 | #ifdef __GNUC__ | |
1314 | #define COMPILER_VERSION "--with-gcc (%d.%d)", __GNUC__, __GNUC_MINOR__ | |
1315 | #else | |
1316 | #define COMPILER_VERSION "" | |
1317 | #endif | |
1318 | #endif | |
1319 | ||
1320 | sprintf (options_buffer, COMPILER_VERSION); | |
1321 | #ifdef EMACSDEBUG | |
1322 | strcat (options_buffer, " --no-opt"); | |
1323 | #endif | |
1324 | #ifdef USER_CFLAGS | |
1325 | strcat (options_buffer, " --cflags"); | |
1326 | strcat (options_buffer, USER_CFLAGS); | |
1327 | #endif | |
1328 | #ifdef USER_LDFLAGS | |
1329 | strcat (options_buffer, " --ldflags"); | |
1330 | strcat (options_buffer, USER_LDFLAGS); | |
1331 | #endif | |
1332 | return options_buffer; | |
1333 | } | |
1334 | ||
1335 | ||
35f0d482 KH |
1336 | #include <sys/timeb.h> |
1337 | ||
1338 | /* Emulate gettimeofday (Ulrich Leodolter, 1/11/95). */ | |
177c0ea7 | 1339 | void |
35f0d482 KH |
1340 | gettimeofday (struct timeval *tv, struct timezone *tz) |
1341 | { | |
6e602566 | 1342 | struct _timeb tb; |
35f0d482 KH |
1343 | _ftime (&tb); |
1344 | ||
1345 | tv->tv_sec = tb.time; | |
1346 | tv->tv_usec = tb.millitm * 1000L; | |
177c0ea7 | 1347 | if (tz) |
35f0d482 KH |
1348 | { |
1349 | tz->tz_minuteswest = tb.timezone; /* minutes west of Greenwich */ | |
1350 | tz->tz_dsttime = tb.dstflag; /* type of dst correction */ | |
1351 | } | |
1352 | } | |
35f0d482 | 1353 | |
480b0c5b | 1354 | /* ------------------------------------------------------------------------- */ |
fbd6baed | 1355 | /* IO support and wrapper functions for W32 API. */ |
480b0c5b | 1356 | /* ------------------------------------------------------------------------- */ |
95ed0025 | 1357 | |
480b0c5b | 1358 | /* Place a wrapper around the MSVC version of ctime. It returns NULL |
177c0ea7 | 1359 | on network directories, so we handle that case here. |
480b0c5b GV |
1360 | (Ulrich Leodolter, 1/11/95). */ |
1361 | char * | |
1362 | sys_ctime (const time_t *t) | |
1363 | { | |
1364 | char *str = (char *) ctime (t); | |
1365 | return (str ? str : "Sun Jan 01 00:00:00 1970"); | |
1366 | } | |
1367 | ||
1368 | /* Emulate sleep...we could have done this with a define, but that | |
1369 | would necessitate including windows.h in the files that used it. | |
1370 | This is much easier. */ | |
1371 | void | |
1372 | sys_sleep (int seconds) | |
1373 | { | |
1374 | Sleep (seconds * 1000); | |
1375 | } | |
1376 | ||
76b3903d | 1377 | /* Internal MSVC functions for low-level descriptor munging */ |
480b0c5b GV |
1378 | extern int __cdecl _set_osfhnd (int fd, long h); |
1379 | extern int __cdecl _free_osfhnd (int fd); | |
1380 | ||
1381 | /* parallel array of private info on file handles */ | |
1382 | filedesc fd_info [ MAXDESC ]; | |
1383 | ||
76b3903d GV |
1384 | typedef struct volume_info_data { |
1385 | struct volume_info_data * next; | |
1386 | ||
1387 | /* time when info was obtained */ | |
1388 | DWORD timestamp; | |
1389 | ||
1390 | /* actual volume info */ | |
1391 | char * root_dir; | |
480b0c5b GV |
1392 | DWORD serialnum; |
1393 | DWORD maxcomp; | |
1394 | DWORD flags; | |
76b3903d GV |
1395 | char * name; |
1396 | char * type; | |
1397 | } volume_info_data; | |
1398 | ||
1399 | /* Global referenced by various functions. */ | |
1400 | static volume_info_data volume_info; | |
1401 | ||
1402 | /* Vector to indicate which drives are local and fixed (for which cached | |
1403 | data never expires). */ | |
1404 | static BOOL fixed_drives[26]; | |
1405 | ||
1406 | /* Consider cached volume information to be stale if older than 10s, | |
1407 | at least for non-local drives. Info for fixed drives is never stale. */ | |
1408 | #define DRIVE_INDEX( c ) ( (c) <= 'Z' ? (c) - 'A' : (c) - 'a' ) | |
1409 | #define VOLINFO_STILL_VALID( root_dir, info ) \ | |
1410 | ( ( isalpha (root_dir[0]) && \ | |
1411 | fixed_drives[ DRIVE_INDEX (root_dir[0]) ] ) \ | |
1412 | || GetTickCount () - info->timestamp < 10000 ) | |
1413 | ||
1414 | /* Cache support functions. */ | |
1415 | ||
1416 | /* Simple linked list with linear search is sufficient. */ | |
1417 | static volume_info_data *volume_cache = NULL; | |
1418 | ||
1419 | static volume_info_data * | |
1420 | lookup_volume_info (char * root_dir) | |
1421 | { | |
1422 | volume_info_data * info; | |
1423 | ||
1424 | for (info = volume_cache; info; info = info->next) | |
1425 | if (stricmp (info->root_dir, root_dir) == 0) | |
1426 | break; | |
1427 | return info; | |
1428 | } | |
1429 | ||
1430 | static void | |
1431 | add_volume_info (char * root_dir, volume_info_data * info) | |
1432 | { | |
a302c7ae | 1433 | info->root_dir = xstrdup (root_dir); |
76b3903d GV |
1434 | info->next = volume_cache; |
1435 | volume_cache = info; | |
1436 | } | |
1437 | ||
1438 | ||
1439 | /* Wrapper for GetVolumeInformation, which uses caching to avoid | |
1440 | performance penalty (~2ms on 486 for local drives, 7.5ms for local | |
1441 | cdrom drive, ~5-10ms or more for remote drives on LAN). */ | |
1442 | volume_info_data * | |
1443 | GetCachedVolumeInformation (char * root_dir) | |
1444 | { | |
1445 | volume_info_data * info; | |
1446 | char default_root[ MAX_PATH ]; | |
1447 | ||
1448 | /* NULL for root_dir means use root from current directory. */ | |
1449 | if (root_dir == NULL) | |
1450 | { | |
1451 | if (GetCurrentDirectory (MAX_PATH, default_root) == 0) | |
1452 | return NULL; | |
1453 | parse_root (default_root, &root_dir); | |
1454 | *root_dir = 0; | |
1455 | root_dir = default_root; | |
1456 | } | |
1457 | ||
1458 | /* Local fixed drives can be cached permanently. Removable drives | |
1459 | cannot be cached permanently, since the volume name and serial | |
1460 | number (if nothing else) can change. Remote drives should be | |
1461 | treated as if they are removable, since there is no sure way to | |
1462 | tell whether they are or not. Also, the UNC association of drive | |
1463 | letters mapped to remote volumes can be changed at any time (even | |
1464 | by other processes) without notice. | |
177c0ea7 | 1465 | |
76b3903d GV |
1466 | As a compromise, so we can benefit from caching info for remote |
1467 | volumes, we use a simple expiry mechanism to invalidate cache | |
1468 | entries that are more than ten seconds old. */ | |
1469 | ||
1470 | #if 0 | |
1471 | /* No point doing this, because WNetGetConnection is even slower than | |
1472 | GetVolumeInformation, consistently taking ~50ms on a 486 (FWIW, | |
1473 | GetDriveType is about the only call of this type which does not | |
1474 | involve network access, and so is extremely quick). */ | |
1475 | ||
1476 | /* Map drive letter to UNC if remote. */ | |
1477 | if ( isalpha( root_dir[0] ) && !fixed[ DRIVE_INDEX( root_dir[0] ) ] ) | |
1478 | { | |
1479 | char remote_name[ 256 ]; | |
1480 | char drive[3] = { root_dir[0], ':' }; | |
1481 | ||
1482 | if (WNetGetConnection (drive, remote_name, sizeof (remote_name)) | |
1483 | == NO_ERROR) | |
1484 | /* do something */ ; | |
1485 | } | |
1486 | #endif | |
1487 | ||
1488 | info = lookup_volume_info (root_dir); | |
1489 | ||
1490 | if (info == NULL || ! VOLINFO_STILL_VALID (root_dir, info)) | |
1491 | { | |
1492 | char name[ 256 ]; | |
1493 | DWORD serialnum; | |
1494 | DWORD maxcomp; | |
1495 | DWORD flags; | |
1496 | char type[ 256 ]; | |
1497 | ||
1498 | /* Info is not cached, or is stale. */ | |
1499 | if (!GetVolumeInformation (root_dir, | |
1500 | name, sizeof (name), | |
1501 | &serialnum, | |
1502 | &maxcomp, | |
1503 | &flags, | |
1504 | type, sizeof (type))) | |
1505 | return NULL; | |
1506 | ||
1507 | /* Cache the volume information for future use, overwriting existing | |
1508 | entry if present. */ | |
1509 | if (info == NULL) | |
1510 | { | |
1511 | info = (volume_info_data *) xmalloc (sizeof (volume_info_data)); | |
1512 | add_volume_info (root_dir, info); | |
1513 | } | |
1514 | else | |
1515 | { | |
a302c7ae AI |
1516 | xfree (info->name); |
1517 | xfree (info->type); | |
76b3903d GV |
1518 | } |
1519 | ||
a302c7ae | 1520 | info->name = xstrdup (name); |
76b3903d GV |
1521 | info->serialnum = serialnum; |
1522 | info->maxcomp = maxcomp; | |
1523 | info->flags = flags; | |
a302c7ae | 1524 | info->type = xstrdup (type); |
76b3903d GV |
1525 | info->timestamp = GetTickCount (); |
1526 | } | |
1527 | ||
1528 | return info; | |
1529 | } | |
480b0c5b GV |
1530 | |
1531 | /* Get information on the volume where name is held; set path pointer to | |
1532 | start of pathname in name (past UNC header\volume header if present). */ | |
1533 | int | |
1534 | get_volume_info (const char * name, const char ** pPath) | |
95ed0025 | 1535 | { |
480b0c5b GV |
1536 | char temp[MAX_PATH]; |
1537 | char *rootname = NULL; /* default to current volume */ | |
76b3903d | 1538 | volume_info_data * info; |
480b0c5b GV |
1539 | |
1540 | if (name == NULL) | |
1541 | return FALSE; | |
1542 | ||
1543 | /* find the root name of the volume if given */ | |
1544 | if (isalpha (name[0]) && name[1] == ':') | |
1545 | { | |
1546 | rootname = temp; | |
1547 | temp[0] = *name++; | |
1548 | temp[1] = *name++; | |
1549 | temp[2] = '\\'; | |
1550 | temp[3] = 0; | |
1551 | } | |
1552 | else if (IS_DIRECTORY_SEP (name[0]) && IS_DIRECTORY_SEP (name[1])) | |
95ed0025 | 1553 | { |
480b0c5b GV |
1554 | char *str = temp; |
1555 | int slashes = 4; | |
1556 | rootname = temp; | |
1557 | do | |
1558 | { | |
1559 | if (IS_DIRECTORY_SEP (*name) && --slashes == 0) | |
1560 | break; | |
1561 | *str++ = *name++; | |
1562 | } | |
1563 | while ( *name ); | |
1564 | ||
480b0c5b GV |
1565 | *str++ = '\\'; |
1566 | *str = 0; | |
95ed0025 | 1567 | } |
480b0c5b GV |
1568 | |
1569 | if (pPath) | |
1570 | *pPath = name; | |
177c0ea7 | 1571 | |
76b3903d GV |
1572 | info = GetCachedVolumeInformation (rootname); |
1573 | if (info != NULL) | |
95ed0025 | 1574 | { |
76b3903d GV |
1575 | /* Set global referenced by other functions. */ |
1576 | volume_info = *info; | |
480b0c5b | 1577 | return TRUE; |
95ed0025 | 1578 | } |
480b0c5b GV |
1579 | return FALSE; |
1580 | } | |
1581 | ||
1582 | /* Determine if volume is FAT format (ie. only supports short 8.3 | |
1583 | names); also set path pointer to start of pathname in name. */ | |
1584 | int | |
1585 | is_fat_volume (const char * name, const char ** pPath) | |
1586 | { | |
1587 | if (get_volume_info (name, pPath)) | |
1588 | return (volume_info.maxcomp == 12); | |
1589 | return FALSE; | |
1590 | } | |
1591 | ||
1592 | /* Map filename to a legal 8.3 name if necessary. */ | |
1593 | const char * | |
fbd6baed | 1594 | map_w32_filename (const char * name, const char ** pPath) |
480b0c5b GV |
1595 | { |
1596 | static char shortname[MAX_PATH]; | |
1597 | char * str = shortname; | |
1598 | char c; | |
480b0c5b | 1599 | char * path; |
76b3903d | 1600 | const char * save_name = name; |
480b0c5b | 1601 | |
ca149beb AI |
1602 | if (strlen (name) >= MAX_PATH) |
1603 | { | |
1604 | /* Return a filename which will cause callers to fail. */ | |
1605 | strcpy (shortname, "?"); | |
1606 | return shortname; | |
1607 | } | |
1608 | ||
a302c7ae | 1609 | if (is_fat_volume (name, (const char **)&path)) /* truncate to 8.3 */ |
95ed0025 | 1610 | { |
480b0c5b GV |
1611 | register int left = 8; /* maximum number of chars in part */ |
1612 | register int extn = 0; /* extension added? */ | |
1613 | register int dots = 2; /* maximum number of dots allowed */ | |
1614 | ||
1615 | while (name < path) | |
1616 | *str++ = *name++; /* skip past UNC header */ | |
1617 | ||
1618 | while ((c = *name++)) | |
1619 | { | |
1620 | switch ( c ) | |
1621 | { | |
1622 | case '\\': | |
1623 | case '/': | |
1624 | *str++ = '\\'; | |
1625 | extn = 0; /* reset extension flags */ | |
1626 | dots = 2; /* max 2 dots */ | |
1627 | left = 8; /* max length 8 for main part */ | |
1628 | break; | |
1629 | case ':': | |
1630 | *str++ = ':'; | |
1631 | extn = 0; /* reset extension flags */ | |
1632 | dots = 2; /* max 2 dots */ | |
1633 | left = 8; /* max length 8 for main part */ | |
1634 | break; | |
1635 | case '.': | |
1636 | if ( dots ) | |
1637 | { | |
1638 | /* Convert path components of the form .xxx to _xxx, | |
1639 | but leave . and .. as they are. This allows .emacs | |
1640 | to be read as _emacs, for example. */ | |
1641 | ||
1642 | if (! *name || | |
1643 | *name == '.' || | |
1644 | IS_DIRECTORY_SEP (*name)) | |
1645 | { | |
1646 | *str++ = '.'; | |
1647 | dots--; | |
1648 | } | |
1649 | else | |
1650 | { | |
1651 | *str++ = '_'; | |
1652 | left--; | |
1653 | dots = 0; | |
1654 | } | |
1655 | } | |
1656 | else if ( !extn ) | |
1657 | { | |
1658 | *str++ = '.'; | |
1659 | extn = 1; /* we've got an extension */ | |
1660 | left = 3; /* 3 chars in extension */ | |
1661 | } | |
1662 | else | |
1663 | { | |
1664 | /* any embedded dots after the first are converted to _ */ | |
1665 | *str++ = '_'; | |
1666 | } | |
1667 | break; | |
1668 | case '~': | |
1669 | case '#': /* don't lose these, they're important */ | |
1670 | if ( ! left ) | |
1671 | str[-1] = c; /* replace last character of part */ | |
1672 | /* FALLTHRU */ | |
1673 | default: | |
1674 | if ( left ) | |
1675 | { | |
1676 | *str++ = tolower (c); /* map to lower case (looks nicer) */ | |
1677 | left--; | |
1678 | dots = 0; /* started a path component */ | |
1679 | } | |
1680 | break; | |
1681 | } | |
1682 | } | |
1683 | *str = '\0'; | |
fc85cb29 RS |
1684 | } |
1685 | else | |
1686 | { | |
1687 | strcpy (shortname, name); | |
1688 | unixtodos_filename (shortname); | |
95ed0025 | 1689 | } |
480b0c5b GV |
1690 | |
1691 | if (pPath) | |
76b3903d | 1692 | *pPath = shortname + (path - save_name); |
480b0c5b | 1693 | |
fc85cb29 | 1694 | return shortname; |
480b0c5b GV |
1695 | } |
1696 | ||
b3308d2e KH |
1697 | static int |
1698 | is_exec (const char * name) | |
1699 | { | |
1700 | char * p = strrchr (name, '.'); | |
1701 | return | |
1702 | (p != NULL | |
1703 | && (stricmp (p, ".exe") == 0 || | |
1704 | stricmp (p, ".com") == 0 || | |
1705 | stricmp (p, ".bat") == 0 || | |
1706 | stricmp (p, ".cmd") == 0)); | |
1707 | } | |
1708 | ||
177c0ea7 | 1709 | /* Emulate the Unix directory procedures opendir, closedir, |
76b3903d GV |
1710 | and readdir. We can't use the procedures supplied in sysdep.c, |
1711 | so we provide them here. */ | |
1712 | ||
1713 | struct direct dir_static; /* simulated directory contents */ | |
1714 | static HANDLE dir_find_handle = INVALID_HANDLE_VALUE; | |
1715 | static int dir_is_fat; | |
1716 | static char dir_pathname[MAXPATHLEN+1]; | |
1717 | static WIN32_FIND_DATA dir_find_data; | |
1718 | ||
9d3355d1 GV |
1719 | /* Support shares on a network resource as subdirectories of a read-only |
1720 | root directory. */ | |
1721 | static HANDLE wnet_enum_handle = INVALID_HANDLE_VALUE; | |
e0c181dd | 1722 | HANDLE open_unc_volume (const char *); |
9d3355d1 GV |
1723 | char *read_unc_volume (HANDLE, char *, int); |
1724 | void close_unc_volume (HANDLE); | |
1725 | ||
76b3903d GV |
1726 | DIR * |
1727 | opendir (char *filename) | |
1728 | { | |
1729 | DIR *dirp; | |
1730 | ||
1731 | /* Opening is done by FindFirstFile. However, a read is inherent to | |
1732 | this operation, so we defer the open until read time. */ | |
1733 | ||
76b3903d GV |
1734 | if (dir_find_handle != INVALID_HANDLE_VALUE) |
1735 | return NULL; | |
9d3355d1 GV |
1736 | if (wnet_enum_handle != INVALID_HANDLE_VALUE) |
1737 | return NULL; | |
1738 | ||
1739 | if (is_unc_volume (filename)) | |
1740 | { | |
1741 | wnet_enum_handle = open_unc_volume (filename); | |
1742 | if (wnet_enum_handle == INVALID_HANDLE_VALUE) | |
1743 | return NULL; | |
1744 | } | |
1745 | ||
1746 | if (!(dirp = (DIR *) malloc (sizeof (DIR)))) | |
1747 | return NULL; | |
76b3903d GV |
1748 | |
1749 | dirp->dd_fd = 0; | |
1750 | dirp->dd_loc = 0; | |
1751 | dirp->dd_size = 0; | |
1752 | ||
1753 | strncpy (dir_pathname, map_w32_filename (filename, NULL), MAXPATHLEN); | |
1754 | dir_pathname[MAXPATHLEN] = '\0'; | |
1755 | dir_is_fat = is_fat_volume (filename, NULL); | |
1756 | ||
1757 | return dirp; | |
1758 | } | |
1759 | ||
1760 | void | |
1761 | closedir (DIR *dirp) | |
1762 | { | |
1763 | /* If we have a find-handle open, close it. */ | |
1764 | if (dir_find_handle != INVALID_HANDLE_VALUE) | |
1765 | { | |
1766 | FindClose (dir_find_handle); | |
1767 | dir_find_handle = INVALID_HANDLE_VALUE; | |
1768 | } | |
9d3355d1 GV |
1769 | else if (wnet_enum_handle != INVALID_HANDLE_VALUE) |
1770 | { | |
1771 | close_unc_volume (wnet_enum_handle); | |
1772 | wnet_enum_handle = INVALID_HANDLE_VALUE; | |
1773 | } | |
76b3903d GV |
1774 | xfree ((char *) dirp); |
1775 | } | |
1776 | ||
1777 | struct direct * | |
1778 | readdir (DIR *dirp) | |
1779 | { | |
9d3355d1 GV |
1780 | if (wnet_enum_handle != INVALID_HANDLE_VALUE) |
1781 | { | |
177c0ea7 JB |
1782 | if (!read_unc_volume (wnet_enum_handle, |
1783 | dir_find_data.cFileName, | |
9d3355d1 GV |
1784 | MAX_PATH)) |
1785 | return NULL; | |
1786 | } | |
76b3903d | 1787 | /* If we aren't dir_finding, do a find-first, otherwise do a find-next. */ |
9d3355d1 | 1788 | else if (dir_find_handle == INVALID_HANDLE_VALUE) |
76b3903d GV |
1789 | { |
1790 | char filename[MAXNAMLEN + 3]; | |
1791 | int ln; | |
1792 | ||
1793 | strcpy (filename, dir_pathname); | |
1794 | ln = strlen (filename) - 1; | |
1795 | if (!IS_DIRECTORY_SEP (filename[ln])) | |
1796 | strcat (filename, "\\"); | |
1797 | strcat (filename, "*"); | |
1798 | ||
1799 | dir_find_handle = FindFirstFile (filename, &dir_find_data); | |
1800 | ||
1801 | if (dir_find_handle == INVALID_HANDLE_VALUE) | |
1802 | return NULL; | |
1803 | } | |
1804 | else | |
1805 | { | |
1806 | if (!FindNextFile (dir_find_handle, &dir_find_data)) | |
1807 | return NULL; | |
1808 | } | |
177c0ea7 | 1809 | |
76b3903d GV |
1810 | /* Emacs never uses this value, so don't bother making it match |
1811 | value returned by stat(). */ | |
1812 | dir_static.d_ino = 1; | |
177c0ea7 | 1813 | |
76b3903d GV |
1814 | dir_static.d_reclen = sizeof (struct direct) - MAXNAMLEN + 3 + |
1815 | dir_static.d_namlen - dir_static.d_namlen % 4; | |
177c0ea7 | 1816 | |
76b3903d GV |
1817 | dir_static.d_namlen = strlen (dir_find_data.cFileName); |
1818 | strcpy (dir_static.d_name, dir_find_data.cFileName); | |
1819 | if (dir_is_fat) | |
1820 | _strlwr (dir_static.d_name); | |
1821 | else if (!NILP (Vw32_downcase_file_names)) | |
1822 | { | |
1823 | register char *p; | |
1824 | for (p = dir_static.d_name; *p; p++) | |
1825 | if (*p >= 'a' && *p <= 'z') | |
1826 | break; | |
1827 | if (!*p) | |
1828 | _strlwr (dir_static.d_name); | |
1829 | } | |
177c0ea7 | 1830 | |
76b3903d GV |
1831 | return &dir_static; |
1832 | } | |
1833 | ||
9d3355d1 | 1834 | HANDLE |
e0c181dd | 1835 | open_unc_volume (const char *path) |
9d3355d1 | 1836 | { |
177c0ea7 | 1837 | NETRESOURCE nr; |
9d3355d1 GV |
1838 | HANDLE henum; |
1839 | int result; | |
1840 | ||
177c0ea7 JB |
1841 | nr.dwScope = RESOURCE_GLOBALNET; |
1842 | nr.dwType = RESOURCETYPE_DISK; | |
1843 | nr.dwDisplayType = RESOURCEDISPLAYTYPE_SERVER; | |
1844 | nr.dwUsage = RESOURCEUSAGE_CONTAINER; | |
1845 | nr.lpLocalName = NULL; | |
6e602566 | 1846 | nr.lpRemoteName = (LPSTR)map_w32_filename (path, NULL); |
177c0ea7 JB |
1847 | nr.lpComment = NULL; |
1848 | nr.lpProvider = NULL; | |
9d3355d1 | 1849 | |
177c0ea7 | 1850 | result = WNetOpenEnum(RESOURCE_GLOBALNET, RESOURCETYPE_DISK, |
9d3355d1 GV |
1851 | RESOURCEUSAGE_CONNECTABLE, &nr, &henum); |
1852 | ||
1853 | if (result == NO_ERROR) | |
1854 | return henum; | |
1855 | else | |
1856 | return INVALID_HANDLE_VALUE; | |
1857 | } | |
1858 | ||
1859 | char * | |
1860 | read_unc_volume (HANDLE henum, char *readbuf, int size) | |
1861 | { | |
a302c7ae | 1862 | DWORD count; |
9d3355d1 | 1863 | int result; |
a302c7ae | 1864 | DWORD bufsize = 512; |
9d3355d1 GV |
1865 | char *buffer; |
1866 | char *ptr; | |
1867 | ||
1868 | count = 1; | |
1869 | buffer = alloca (bufsize); | |
1870 | result = WNetEnumResource (wnet_enum_handle, &count, buffer, &bufsize); | |
1871 | if (result != NO_ERROR) | |
1872 | return NULL; | |
1873 | ||
1874 | /* WNetEnumResource returns \\resource\share...skip forward to "share". */ | |
1875 | ptr = ((LPNETRESOURCE) buffer)->lpRemoteName; | |
1876 | ptr += 2; | |
1877 | while (*ptr && !IS_DIRECTORY_SEP (*ptr)) ptr++; | |
1878 | ptr++; | |
1879 | ||
1880 | strncpy (readbuf, ptr, size); | |
1881 | return readbuf; | |
1882 | } | |
1883 | ||
1884 | void | |
1885 | close_unc_volume (HANDLE henum) | |
1886 | { | |
1887 | if (henum != INVALID_HANDLE_VALUE) | |
1888 | WNetCloseEnum (henum); | |
1889 | } | |
1890 | ||
1891 | DWORD | |
e0c181dd | 1892 | unc_volume_file_attributes (const char *path) |
9d3355d1 GV |
1893 | { |
1894 | HANDLE henum; | |
1895 | DWORD attrs; | |
1896 | ||
1897 | henum = open_unc_volume (path); | |
1898 | if (henum == INVALID_HANDLE_VALUE) | |
1899 | return -1; | |
1900 | ||
1901 | attrs = FILE_ATTRIBUTE_READONLY | FILE_ATTRIBUTE_DIRECTORY; | |
1902 | ||
1903 | close_unc_volume (henum); | |
1904 | ||
1905 | return attrs; | |
1906 | } | |
1907 | ||
480b0c5b GV |
1908 | |
1909 | /* Shadow some MSVC runtime functions to map requests for long filenames | |
1910 | to reasonable short names if necessary. This was originally added to | |
177c0ea7 | 1911 | permit running Emacs on NT 3.1 on a FAT partition, which doesn't support |
480b0c5b GV |
1912 | long file names. */ |
1913 | ||
1914 | int | |
1915 | sys_access (const char * path, int mode) | |
1916 | { | |
b3308d2e KH |
1917 | DWORD attributes; |
1918 | ||
1919 | /* MSVC implementation doesn't recognize D_OK. */ | |
1920 | path = map_w32_filename (path, NULL); | |
9d3355d1 GV |
1921 | if (is_unc_volume (path)) |
1922 | { | |
1923 | attributes = unc_volume_file_attributes (path); | |
1924 | if (attributes == -1) { | |
1925 | errno = EACCES; | |
1926 | return -1; | |
1927 | } | |
1928 | } | |
1929 | else if ((attributes = GetFileAttributes (path)) == -1) | |
b3308d2e KH |
1930 | { |
1931 | /* Should try mapping GetLastError to errno; for now just indicate | |
1932 | that path doesn't exist. */ | |
1933 | errno = EACCES; | |
1934 | return -1; | |
1935 | } | |
1936 | if ((mode & X_OK) != 0 && !is_exec (path)) | |
1937 | { | |
1938 | errno = EACCES; | |
1939 | return -1; | |
1940 | } | |
1941 | if ((mode & W_OK) != 0 && (attributes & FILE_ATTRIBUTE_READONLY) != 0) | |
1942 | { | |
1943 | errno = EACCES; | |
1944 | return -1; | |
1945 | } | |
1946 | if ((mode & D_OK) != 0 && (attributes & FILE_ATTRIBUTE_DIRECTORY) == 0) | |
1947 | { | |
1948 | errno = EACCES; | |
1949 | return -1; | |
1950 | } | |
1951 | return 0; | |
480b0c5b GV |
1952 | } |
1953 | ||
1954 | int | |
1955 | sys_chdir (const char * path) | |
1956 | { | |
fbd6baed | 1957 | return _chdir (map_w32_filename (path, NULL)); |
480b0c5b GV |
1958 | } |
1959 | ||
1960 | int | |
1961 | sys_chmod (const char * path, int mode) | |
1962 | { | |
fbd6baed | 1963 | return _chmod (map_w32_filename (path, NULL), mode); |
480b0c5b GV |
1964 | } |
1965 | ||
2d5ab4bf EZ |
1966 | int |
1967 | sys_chown (const char *path, uid_t owner, gid_t group) | |
1968 | { | |
1969 | if (sys_chmod (path, _S_IREAD) == -1) /* check if file exists */ | |
1970 | return -1; | |
1971 | return 0; | |
1972 | } | |
1973 | ||
480b0c5b GV |
1974 | int |
1975 | sys_creat (const char * path, int mode) | |
1976 | { | |
fbd6baed | 1977 | return _creat (map_w32_filename (path, NULL), mode); |
480b0c5b GV |
1978 | } |
1979 | ||
1980 | FILE * | |
1981 | sys_fopen(const char * path, const char * mode) | |
1982 | { | |
1983 | int fd; | |
1984 | int oflag; | |
1985 | const char * mode_save = mode; | |
1986 | ||
1987 | /* Force all file handles to be non-inheritable. This is necessary to | |
1988 | ensure child processes don't unwittingly inherit handles that might | |
1989 | prevent future file access. */ | |
1990 | ||
1991 | if (mode[0] == 'r') | |
1992 | oflag = O_RDONLY; | |
1993 | else if (mode[0] == 'w' || mode[0] == 'a') | |
1994 | oflag = O_WRONLY | O_CREAT | O_TRUNC; | |
95ed0025 | 1995 | else |
480b0c5b GV |
1996 | return NULL; |
1997 | ||
1998 | /* Only do simplistic option parsing. */ | |
1999 | while (*++mode) | |
2000 | if (mode[0] == '+') | |
2001 | { | |
2002 | oflag &= ~(O_RDONLY | O_WRONLY); | |
2003 | oflag |= O_RDWR; | |
2004 | } | |
2005 | else if (mode[0] == 'b') | |
2006 | { | |
2007 | oflag &= ~O_TEXT; | |
2008 | oflag |= O_BINARY; | |
2009 | } | |
2010 | else if (mode[0] == 't') | |
2011 | { | |
2012 | oflag &= ~O_BINARY; | |
2013 | oflag |= O_TEXT; | |
2014 | } | |
2015 | else break; | |
2016 | ||
fbd6baed | 2017 | fd = _open (map_w32_filename (path, NULL), oflag | _O_NOINHERIT, 0644); |
480b0c5b GV |
2018 | if (fd < 0) |
2019 | return NULL; | |
2020 | ||
76b3903d | 2021 | return _fdopen (fd, mode_save); |
95ed0025 | 2022 | } |
480b0c5b | 2023 | |
76b3903d | 2024 | /* This only works on NTFS volumes, but is useful to have. */ |
480b0c5b | 2025 | int |
76b3903d | 2026 | sys_link (const char * old, const char * new) |
480b0c5b | 2027 | { |
76b3903d GV |
2028 | HANDLE fileh; |
2029 | int result = -1; | |
2030 | char oldname[MAX_PATH], newname[MAX_PATH]; | |
2031 | ||
2032 | if (old == NULL || new == NULL) | |
2033 | { | |
2034 | errno = ENOENT; | |
2035 | return -1; | |
2036 | } | |
2037 | ||
2038 | strcpy (oldname, map_w32_filename (old, NULL)); | |
2039 | strcpy (newname, map_w32_filename (new, NULL)); | |
2040 | ||
2041 | fileh = CreateFile (oldname, 0, 0, NULL, OPEN_EXISTING, | |
2042 | FILE_FLAG_BACKUP_SEMANTICS, NULL); | |
2043 | if (fileh != INVALID_HANDLE_VALUE) | |
2044 | { | |
2045 | int wlen; | |
2046 | ||
2047 | /* Confusingly, the "alternate" stream name field does not apply | |
2048 | when restoring a hard link, and instead contains the actual | |
2049 | stream data for the link (ie. the name of the link to create). | |
2050 | The WIN32_STREAM_ID structure before the cStreamName field is | |
2051 | the stream header, which is then immediately followed by the | |
2052 | stream data. */ | |
2053 | ||
2054 | struct { | |
2055 | WIN32_STREAM_ID wid; | |
2056 | WCHAR wbuffer[MAX_PATH]; /* extra space for link name */ | |
2057 | } data; | |
2058 | ||
2059 | wlen = MultiByteToWideChar (CP_ACP, MB_PRECOMPOSED, newname, -1, | |
2060 | data.wid.cStreamName, MAX_PATH); | |
2061 | if (wlen > 0) | |
2062 | { | |
2063 | LPVOID context = NULL; | |
2064 | DWORD wbytes = 0; | |
2065 | ||
2066 | data.wid.dwStreamId = BACKUP_LINK; | |
2067 | data.wid.dwStreamAttributes = 0; | |
2068 | data.wid.Size.LowPart = wlen * sizeof(WCHAR); | |
2069 | data.wid.Size.HighPart = 0; | |
2070 | data.wid.dwStreamNameSize = 0; | |
2071 | ||
2072 | if (BackupWrite (fileh, (LPBYTE)&data, | |
2073 | offsetof (WIN32_STREAM_ID, cStreamName) | |
2074 | + data.wid.Size.LowPart, | |
2075 | &wbytes, FALSE, FALSE, &context) | |
2076 | && BackupWrite (fileh, NULL, 0, &wbytes, TRUE, FALSE, &context)) | |
2077 | { | |
2078 | /* succeeded */ | |
2079 | result = 0; | |
2080 | } | |
2081 | else | |
2082 | { | |
2083 | /* Should try mapping GetLastError to errno; for now just | |
2084 | indicate a general error (eg. links not supported). */ | |
2085 | errno = EINVAL; // perhaps EMLINK? | |
2086 | } | |
2087 | } | |
2088 | ||
2089 | CloseHandle (fileh); | |
2090 | } | |
2091 | else | |
2092 | errno = ENOENT; | |
2093 | ||
2094 | return result; | |
480b0c5b GV |
2095 | } |
2096 | ||
2097 | int | |
2098 | sys_mkdir (const char * path) | |
2099 | { | |
fbd6baed | 2100 | return _mkdir (map_w32_filename (path, NULL)); |
480b0c5b GV |
2101 | } |
2102 | ||
9d1778b1 RS |
2103 | /* Because of long name mapping issues, we need to implement this |
2104 | ourselves. Also, MSVC's _mktemp returns NULL when it can't generate | |
2105 | a unique name, instead of setting the input template to an empty | |
2106 | string. | |
2107 | ||
2108 | Standard algorithm seems to be use pid or tid with a letter on the | |
2109 | front (in place of the 6 X's) and cycle through the letters to find a | |
2110 | unique name. We extend that to allow any reasonable character as the | |
2111 | first of the 6 X's. */ | |
480b0c5b GV |
2112 | char * |
2113 | sys_mktemp (char * template) | |
2114 | { | |
9d1778b1 RS |
2115 | char * p; |
2116 | int i; | |
2117 | unsigned uid = GetCurrentThreadId (); | |
2118 | static char first_char[] = "abcdefghijklmnopqrstuvwyz0123456789!%-_@#"; | |
2119 | ||
2120 | if (template == NULL) | |
2121 | return NULL; | |
2122 | p = template + strlen (template); | |
2123 | i = 5; | |
2124 | /* replace up to the last 5 X's with uid in decimal */ | |
2125 | while (--p >= template && p[0] == 'X' && --i >= 0) | |
2126 | { | |
2127 | p[0] = '0' + uid % 10; | |
2128 | uid /= 10; | |
2129 | } | |
2130 | ||
2131 | if (i < 0 && p[0] == 'X') | |
2132 | { | |
2133 | i = 0; | |
2134 | do | |
2135 | { | |
2136 | int save_errno = errno; | |
2137 | p[0] = first_char[i]; | |
2138 | if (sys_access (template, 0) < 0) | |
2139 | { | |
2140 | errno = save_errno; | |
2141 | return template; | |
2142 | } | |
2143 | } | |
2144 | while (++i < sizeof (first_char)); | |
2145 | } | |
2146 | ||
2147 | /* Template is badly formed or else we can't generate a unique name, | |
2148 | so return empty string */ | |
2149 | template[0] = 0; | |
2150 | return template; | |
480b0c5b GV |
2151 | } |
2152 | ||
2153 | int | |
2154 | sys_open (const char * path, int oflag, int mode) | |
2155 | { | |
302f0b29 GM |
2156 | const char* mpath = map_w32_filename (path, NULL); |
2157 | /* Try to open file without _O_CREAT, to be able to write to hidden | |
2158 | and system files. Force all file handles to be | |
2159 | non-inheritable. */ | |
2160 | int res = _open (mpath, (oflag & ~_O_CREAT) | _O_NOINHERIT, mode); | |
2161 | if (res >= 0) | |
2162 | return res; | |
2163 | return _open (mpath, oflag | _O_NOINHERIT, mode); | |
480b0c5b GV |
2164 | } |
2165 | ||
2166 | int | |
2167 | sys_rename (const char * oldname, const char * newname) | |
2168 | { | |
cfb5e855 | 2169 | BOOL result; |
b3308d2e | 2170 | char temp[MAX_PATH]; |
480b0c5b | 2171 | |
e9e23e23 | 2172 | /* MoveFile on Windows 95 doesn't correctly change the short file name |
5162ffce MB |
2173 | alias in a number of circumstances (it is not easy to predict when |
2174 | just by looking at oldname and newname, unfortunately). In these | |
2175 | cases, renaming through a temporary name avoids the problem. | |
2176 | ||
e9e23e23 | 2177 | A second problem on Windows 95 is that renaming through a temp name when |
5162ffce MB |
2178 | newname is uppercase fails (the final long name ends up in |
2179 | lowercase, although the short alias might be uppercase) UNLESS the | |
2180 | long temp name is not 8.3. | |
2181 | ||
e9e23e23 | 2182 | So, on Windows 95 we always rename through a temp name, and we make sure |
5162ffce | 2183 | the temp name has a long extension to ensure correct renaming. */ |
480b0c5b | 2184 | |
fbd6baed | 2185 | strcpy (temp, map_w32_filename (oldname, NULL)); |
480b0c5b | 2186 | |
76b3903d | 2187 | if (os_subtype == OS_WIN95) |
480b0c5b | 2188 | { |
b3308d2e | 2189 | char * o; |
480b0c5b | 2190 | char * p; |
b3308d2e KH |
2191 | int i = 0; |
2192 | ||
2193 | oldname = map_w32_filename (oldname, NULL); | |
2194 | if (o = strrchr (oldname, '\\')) | |
2195 | o++; | |
2196 | else | |
2197 | o = (char *) oldname; | |
480b0c5b | 2198 | |
480b0c5b GV |
2199 | if (p = strrchr (temp, '\\')) |
2200 | p++; | |
2201 | else | |
2202 | p = temp; | |
b3308d2e KH |
2203 | |
2204 | do | |
2205 | { | |
2206 | /* Force temp name to require a manufactured 8.3 alias - this | |
2207 | seems to make the second rename work properly. */ | |
f313ee82 | 2208 | sprintf (p, "_.%s.%u", o, i); |
b3308d2e | 2209 | i++; |
58f0cb7e | 2210 | result = rename (oldname, temp); |
b3308d2e KH |
2211 | } |
2212 | /* This loop must surely terminate! */ | |
cfb5e855 | 2213 | while (result < 0 && errno == EEXIST); |
58f0cb7e | 2214 | if (result < 0) |
480b0c5b GV |
2215 | return -1; |
2216 | } | |
2217 | ||
2218 | /* Emulate Unix behaviour - newname is deleted if it already exists | |
5162ffce | 2219 | (at least if it is a file; don't do this for directories). |
76b3903d | 2220 | |
b3308d2e KH |
2221 | Since we mustn't do this if we are just changing the case of the |
2222 | file name (we would end up deleting the file we are trying to | |
2223 | rename!), we let rename detect if the destination file already | |
2224 | exists - that way we avoid the possible pitfalls of trying to | |
2225 | determine ourselves whether two names really refer to the same | |
2226 | file, which is not always possible in the general case. (Consider | |
2227 | all the permutations of shared or subst'd drives, etc.) */ | |
2228 | ||
2229 | newname = map_w32_filename (newname, NULL); | |
eb9ea53f | 2230 | result = rename (temp, newname); |
b3308d2e KH |
2231 | |
2232 | if (result < 0 | |
cfb5e855 | 2233 | && errno == EEXIST |
b3308d2e KH |
2234 | && _chmod (newname, 0666) == 0 |
2235 | && _unlink (newname) == 0) | |
2236 | result = rename (temp, newname); | |
480b0c5b | 2237 | |
eb9ea53f | 2238 | return result; |
480b0c5b GV |
2239 | } |
2240 | ||
2241 | int | |
2242 | sys_rmdir (const char * path) | |
2243 | { | |
fbd6baed | 2244 | return _rmdir (map_w32_filename (path, NULL)); |
480b0c5b GV |
2245 | } |
2246 | ||
2247 | int | |
2248 | sys_unlink (const char * path) | |
2249 | { | |
16bb7578 GV |
2250 | path = map_w32_filename (path, NULL); |
2251 | ||
2252 | /* On Unix, unlink works without write permission. */ | |
2253 | _chmod (path, 0666); | |
2254 | return _unlink (path); | |
480b0c5b GV |
2255 | } |
2256 | ||
2257 | static FILETIME utc_base_ft; | |
2258 | static long double utc_base; | |
2259 | static int init = 0; | |
2260 | ||
2261 | static time_t | |
2262 | convert_time (FILETIME ft) | |
2263 | { | |
2264 | long double ret; | |
2265 | ||
2266 | if (!init) | |
2267 | { | |
2268 | /* Determine the delta between 1-Jan-1601 and 1-Jan-1970. */ | |
2269 | SYSTEMTIME st; | |
2270 | ||
2271 | st.wYear = 1970; | |
2272 | st.wMonth = 1; | |
2273 | st.wDay = 1; | |
2274 | st.wHour = 0; | |
2275 | st.wMinute = 0; | |
2276 | st.wSecond = 0; | |
2277 | st.wMilliseconds = 0; | |
2278 | ||
2279 | SystemTimeToFileTime (&st, &utc_base_ft); | |
2280 | utc_base = (long double) utc_base_ft.dwHighDateTime | |
69b72317 | 2281 | * 4096.0L * 1024.0L * 1024.0L + utc_base_ft.dwLowDateTime; |
480b0c5b GV |
2282 | init = 1; |
2283 | } | |
2284 | ||
2285 | if (CompareFileTime (&ft, &utc_base_ft) < 0) | |
2286 | return 0; | |
2287 | ||
69b72317 EZ |
2288 | ret = (long double) ft.dwHighDateTime |
2289 | * 4096.0L * 1024.0L * 1024.0L + ft.dwLowDateTime; | |
480b0c5b | 2290 | ret -= utc_base; |
69b72317 | 2291 | return (time_t) (ret * 1e-7L); |
480b0c5b GV |
2292 | } |
2293 | ||
480b0c5b GV |
2294 | void |
2295 | convert_from_time_t (time_t time, FILETIME * pft) | |
2296 | { | |
2297 | long double tmp; | |
2298 | ||
2299 | if (!init) | |
2300 | { | |
2301 | /* Determine the delta between 1-Jan-1601 and 1-Jan-1970. */ | |
2302 | SYSTEMTIME st; | |
2303 | ||
2304 | st.wYear = 1970; | |
2305 | st.wMonth = 1; | |
2306 | st.wDay = 1; | |
2307 | st.wHour = 0; | |
2308 | st.wMinute = 0; | |
2309 | st.wSecond = 0; | |
2310 | st.wMilliseconds = 0; | |
2311 | ||
2312 | SystemTimeToFileTime (&st, &utc_base_ft); | |
2313 | utc_base = (long double) utc_base_ft.dwHighDateTime | |
2314 | * 4096 * 1024 * 1024 + utc_base_ft.dwLowDateTime; | |
2315 | init = 1; | |
2316 | } | |
2317 | ||
2318 | /* time in 100ns units since 1-Jan-1601 */ | |
2319 | tmp = (long double) time * 1e7 + utc_base; | |
2320 | pft->dwHighDateTime = (DWORD) (tmp / (4096.0 * 1024 * 1024)); | |
16bb7578 | 2321 | pft->dwLowDateTime = (DWORD) (tmp - (4096.0 * 1024 * 1024) * pft->dwHighDateTime); |
480b0c5b | 2322 | } |
480b0c5b | 2323 | |
76b3903d GV |
2324 | #if 0 |
2325 | /* No reason to keep this; faking inode values either by hashing or even | |
2326 | using the file index from GetInformationByHandle, is not perfect and | |
2327 | so by default Emacs doesn't use the inode values on Windows. | |
2328 | Instead, we now determine file-truename correctly (except for | |
2329 | possible drive aliasing etc). */ | |
2330 | ||
2331 | /* Modified version of "PJW" algorithm (see the "Dragon" compiler book). */ | |
480b0c5b | 2332 | static unsigned |
76b3903d | 2333 | hashval (const unsigned char * str) |
480b0c5b GV |
2334 | { |
2335 | unsigned h = 0; | |
480b0c5b GV |
2336 | while (*str) |
2337 | { | |
2338 | h = (h << 4) + *str++; | |
76b3903d | 2339 | h ^= (h >> 28); |
480b0c5b GV |
2340 | } |
2341 | return h; | |
2342 | } | |
2343 | ||
2344 | /* Return the hash value of the canonical pathname, excluding the | |
2345 | drive/UNC header, to get a hopefully unique inode number. */ | |
76b3903d | 2346 | static DWORD |
480b0c5b GV |
2347 | generate_inode_val (const char * name) |
2348 | { | |
2349 | char fullname[ MAX_PATH ]; | |
2350 | char * p; | |
2351 | unsigned hash; | |
2352 | ||
76b3903d GV |
2353 | /* Get the truly canonical filename, if it exists. (Note: this |
2354 | doesn't resolve aliasing due to subst commands, or recognise hard | |
2355 | links. */ | |
2356 | if (!w32_get_long_filename ((char *)name, fullname, MAX_PATH)) | |
2357 | abort (); | |
2358 | ||
2359 | parse_root (fullname, &p); | |
fbd6baed | 2360 | /* Normal W32 filesystems are still case insensitive. */ |
480b0c5b | 2361 | _strlwr (p); |
76b3903d | 2362 | return hashval (p); |
480b0c5b GV |
2363 | } |
2364 | ||
76b3903d GV |
2365 | #endif |
2366 | ||
480b0c5b GV |
2367 | /* MSVC stat function can't cope with UNC names and has other bugs, so |
2368 | replace it with our own. This also allows us to calculate consistent | |
2369 | inode values without hacks in the main Emacs code. */ | |
2370 | int | |
2371 | stat (const char * path, struct stat * buf) | |
2372 | { | |
eb9ea53f | 2373 | char *name, *r; |
480b0c5b GV |
2374 | WIN32_FIND_DATA wfd; |
2375 | HANDLE fh; | |
76b3903d | 2376 | DWORD fake_inode; |
480b0c5b GV |
2377 | int permission; |
2378 | int len; | |
2379 | int rootdir = FALSE; | |
2380 | ||
2381 | if (path == NULL || buf == NULL) | |
2382 | { | |
2383 | errno = EFAULT; | |
2384 | return -1; | |
2385 | } | |
2386 | ||
fbd6baed | 2387 | name = (char *) map_w32_filename (path, &path); |
9ab8560d | 2388 | /* must be valid filename, no wild cards or other invalid characters */ |
bb1584c8 | 2389 | if (strpbrk (name, "*?|<>\"")) |
480b0c5b GV |
2390 | { |
2391 | errno = ENOENT; | |
2392 | return -1; | |
2393 | } | |
2394 | ||
eb9ea53f GV |
2395 | /* If name is "c:/.." or "/.." then stat "c:/" or "/". */ |
2396 | r = IS_DEVICE_SEP (name[1]) ? &name[2] : name; | |
2397 | if (IS_DIRECTORY_SEP (r[0]) && r[1] == '.' && r[2] == '.' && r[3] == '\0') | |
2398 | { | |
2399 | r[1] = r[2] = '\0'; | |
2400 | } | |
2401 | ||
480b0c5b GV |
2402 | /* Remove trailing directory separator, unless name is the root |
2403 | directory of a drive or UNC volume in which case ensure there | |
2404 | is a trailing separator. */ | |
2405 | len = strlen (name); | |
2406 | rootdir = (path >= name + len - 1 | |
2407 | && (IS_DIRECTORY_SEP (*path) || *path == 0)); | |
2408 | name = strcpy (alloca (len + 2), name); | |
2409 | ||
9d3355d1 GV |
2410 | if (is_unc_volume (name)) |
2411 | { | |
2412 | DWORD attrs = unc_volume_file_attributes (name); | |
2413 | ||
2414 | if (attrs == -1) | |
2415 | return -1; | |
2416 | ||
2417 | memset (&wfd, 0, sizeof (wfd)); | |
2418 | wfd.dwFileAttributes = attrs; | |
2419 | wfd.ftCreationTime = utc_base_ft; | |
2420 | wfd.ftLastAccessTime = utc_base_ft; | |
2421 | wfd.ftLastWriteTime = utc_base_ft; | |
2422 | strcpy (wfd.cFileName, name); | |
2423 | } | |
2424 | else if (rootdir) | |
480b0c5b GV |
2425 | { |
2426 | if (!IS_DIRECTORY_SEP (name[len-1])) | |
2427 | strcat (name, "\\"); | |
2428 | if (GetDriveType (name) < 2) | |
2429 | { | |
2430 | errno = ENOENT; | |
2431 | return -1; | |
2432 | } | |
2433 | memset (&wfd, 0, sizeof (wfd)); | |
2434 | wfd.dwFileAttributes = FILE_ATTRIBUTE_DIRECTORY; | |
2435 | wfd.ftCreationTime = utc_base_ft; | |
2436 | wfd.ftLastAccessTime = utc_base_ft; | |
2437 | wfd.ftLastWriteTime = utc_base_ft; | |
2438 | strcpy (wfd.cFileName, name); | |
2439 | } | |
2440 | else | |
2441 | { | |
2442 | if (IS_DIRECTORY_SEP (name[len-1])) | |
2443 | name[len - 1] = 0; | |
76b3903d GV |
2444 | |
2445 | /* (This is hacky, but helps when doing file completions on | |
2446 | network drives.) Optimize by using information available from | |
2447 | active readdir if possible. */ | |
b19cc00c GV |
2448 | len = strlen (dir_pathname); |
2449 | if (IS_DIRECTORY_SEP (dir_pathname[len-1])) | |
2450 | len--; | |
76b3903d | 2451 | if (dir_find_handle != INVALID_HANDLE_VALUE |
b19cc00c | 2452 | && strnicmp (name, dir_pathname, len) == 0 |
76b3903d GV |
2453 | && IS_DIRECTORY_SEP (name[len]) |
2454 | && stricmp (name + len + 1, dir_static.d_name) == 0) | |
480b0c5b | 2455 | { |
76b3903d GV |
2456 | /* This was the last entry returned by readdir. */ |
2457 | wfd = dir_find_data; | |
2458 | } | |
2459 | else | |
2460 | { | |
2461 | fh = FindFirstFile (name, &wfd); | |
2462 | if (fh == INVALID_HANDLE_VALUE) | |
2463 | { | |
2464 | errno = ENOENT; | |
2465 | return -1; | |
2466 | } | |
2467 | FindClose (fh); | |
480b0c5b | 2468 | } |
480b0c5b GV |
2469 | } |
2470 | ||
93e0f0da JR |
2471 | if (!NILP (Vw32_get_true_file_attributes) |
2472 | /* No access rights required to get info. */ | |
2473 | && (fh = CreateFile (name, 0, 0, NULL, OPEN_EXISTING, | |
2474 | FILE_FLAG_BACKUP_SEMANTICS, NULL)) | |
2475 | != INVALID_HANDLE_VALUE) | |
480b0c5b | 2476 | { |
480b0c5b GV |
2477 | /* This is more accurate in terms of gettting the correct number |
2478 | of links, but is quite slow (it is noticable when Emacs is | |
2479 | making a list of file name completions). */ | |
2480 | BY_HANDLE_FILE_INFORMATION info; | |
2481 | ||
480b0c5b GV |
2482 | if (GetFileInformationByHandle (fh, &info)) |
2483 | { | |
480b0c5b | 2484 | buf->st_nlink = info.nNumberOfLinks; |
76b3903d GV |
2485 | /* Might as well use file index to fake inode values, but this |
2486 | is not guaranteed to be unique unless we keep a handle open | |
2487 | all the time (even then there are situations where it is | |
2488 | not unique). Reputedly, there are at most 48 bits of info | |
2489 | (on NTFS, presumably less on FAT). */ | |
2490 | fake_inode = info.nFileIndexLow ^ info.nFileIndexHigh; | |
480b0c5b GV |
2491 | } |
2492 | else | |
2493 | { | |
01f31dfb AI |
2494 | buf->st_nlink = 1; |
2495 | fake_inode = 0; | |
2496 | } | |
2497 | ||
93e0f0da | 2498 | if (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) |
01f31dfb | 2499 | { |
93e0f0da JR |
2500 | buf->st_mode = _S_IFDIR; |
2501 | } | |
2502 | else | |
2503 | { | |
2504 | switch (GetFileType (fh)) | |
2505 | { | |
2506 | case FILE_TYPE_DISK: | |
2507 | buf->st_mode = _S_IFREG; | |
2508 | break; | |
2509 | case FILE_TYPE_PIPE: | |
2510 | buf->st_mode = _S_IFIFO; | |
2511 | break; | |
2512 | case FILE_TYPE_CHAR: | |
2513 | case FILE_TYPE_UNKNOWN: | |
2514 | default: | |
2515 | buf->st_mode = _S_IFCHR; | |
2516 | } | |
480b0c5b | 2517 | } |
01f31dfb | 2518 | CloseHandle (fh); |
76b3903d GV |
2519 | } |
2520 | else | |
2521 | { | |
2522 | /* Don't bother to make this information more accurate. */ | |
93e0f0da | 2523 | buf->st_mode = (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) ? |
bc5fdfc7 | 2524 | _S_IFDIR : _S_IFREG; |
480b0c5b | 2525 | buf->st_nlink = 1; |
76b3903d GV |
2526 | fake_inode = 0; |
2527 | } | |
2528 | ||
2529 | #if 0 | |
2530 | /* Not sure if there is any point in this. */ | |
2531 | if (!NILP (Vw32_generate_fake_inodes)) | |
2532 | fake_inode = generate_inode_val (name); | |
2533 | else if (fake_inode == 0) | |
2534 | { | |
2535 | /* For want of something better, try to make everything unique. */ | |
2536 | static DWORD gen_num = 0; | |
2537 | fake_inode = ++gen_num; | |
480b0c5b | 2538 | } |
76b3903d GV |
2539 | #endif |
2540 | ||
2541 | /* MSVC defines _ino_t to be short; other libc's might not. */ | |
2542 | if (sizeof (buf->st_ino) == 2) | |
2543 | buf->st_ino = fake_inode ^ (fake_inode >> 16); | |
2544 | else | |
2545 | buf->st_ino = fake_inode; | |
480b0c5b GV |
2546 | |
2547 | /* consider files to belong to current user */ | |
2548 | buf->st_uid = the_passwd.pw_uid; | |
2549 | buf->st_gid = the_passwd.pw_gid; | |
2550 | ||
fbd6baed | 2551 | /* volume_info is set indirectly by map_w32_filename */ |
480b0c5b GV |
2552 | buf->st_dev = volume_info.serialnum; |
2553 | buf->st_rdev = volume_info.serialnum; | |
2554 | ||
480b0c5b GV |
2555 | |
2556 | buf->st_size = wfd.nFileSizeLow; | |
2557 | ||
2558 | /* Convert timestamps to Unix format. */ | |
2559 | buf->st_mtime = convert_time (wfd.ftLastWriteTime); | |
2560 | buf->st_atime = convert_time (wfd.ftLastAccessTime); | |
2561 | if (buf->st_atime == 0) buf->st_atime = buf->st_mtime; | |
2562 | buf->st_ctime = convert_time (wfd.ftCreationTime); | |
2563 | if (buf->st_ctime == 0) buf->st_ctime = buf->st_mtime; | |
2564 | ||
2565 | /* determine rwx permissions */ | |
2566 | if (wfd.dwFileAttributes & FILE_ATTRIBUTE_READONLY) | |
2567 | permission = _S_IREAD; | |
2568 | else | |
2569 | permission = _S_IREAD | _S_IWRITE; | |
177c0ea7 | 2570 | |
480b0c5b GV |
2571 | if (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) |
2572 | permission |= _S_IEXEC; | |
b3308d2e KH |
2573 | else if (is_exec (name)) |
2574 | permission |= _S_IEXEC; | |
480b0c5b GV |
2575 | |
2576 | buf->st_mode |= permission | (permission >> 3) | (permission >> 6); | |
2577 | ||
2578 | return 0; | |
2579 | } | |
2580 | ||
16bb7578 GV |
2581 | /* Provide fstat and utime as well as stat for consistent handling of |
2582 | file timestamps. */ | |
2583 | int | |
2584 | fstat (int desc, struct stat * buf) | |
2585 | { | |
2586 | HANDLE fh = (HANDLE) _get_osfhandle (desc); | |
2587 | BY_HANDLE_FILE_INFORMATION info; | |
2588 | DWORD fake_inode; | |
2589 | int permission; | |
2590 | ||
2591 | switch (GetFileType (fh) & ~FILE_TYPE_REMOTE) | |
2592 | { | |
2593 | case FILE_TYPE_DISK: | |
2594 | buf->st_mode = _S_IFREG; | |
2595 | if (!GetFileInformationByHandle (fh, &info)) | |
2596 | { | |
2597 | errno = EACCES; | |
2598 | return -1; | |
2599 | } | |
2600 | break; | |
2601 | case FILE_TYPE_PIPE: | |
2602 | buf->st_mode = _S_IFIFO; | |
2603 | goto non_disk; | |
2604 | case FILE_TYPE_CHAR: | |
2605 | case FILE_TYPE_UNKNOWN: | |
2606 | default: | |
2607 | buf->st_mode = _S_IFCHR; | |
2608 | non_disk: | |
2609 | memset (&info, 0, sizeof (info)); | |
2610 | info.dwFileAttributes = 0; | |
2611 | info.ftCreationTime = utc_base_ft; | |
2612 | info.ftLastAccessTime = utc_base_ft; | |
2613 | info.ftLastWriteTime = utc_base_ft; | |
2614 | } | |
2615 | ||
2616 | if (info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) | |
16bb7578 | 2617 | buf->st_mode = _S_IFDIR; |
93e0f0da JR |
2618 | |
2619 | buf->st_nlink = info.nNumberOfLinks; | |
2620 | /* Might as well use file index to fake inode values, but this | |
2621 | is not guaranteed to be unique unless we keep a handle open | |
2622 | all the time (even then there are situations where it is | |
2623 | not unique). Reputedly, there are at most 48 bits of info | |
2624 | (on NTFS, presumably less on FAT). */ | |
2625 | fake_inode = info.nFileIndexLow ^ info.nFileIndexHigh; | |
16bb7578 GV |
2626 | |
2627 | /* MSVC defines _ino_t to be short; other libc's might not. */ | |
2628 | if (sizeof (buf->st_ino) == 2) | |
2629 | buf->st_ino = fake_inode ^ (fake_inode >> 16); | |
2630 | else | |
2631 | buf->st_ino = fake_inode; | |
2632 | ||
2633 | /* consider files to belong to current user */ | |
2634 | buf->st_uid = 0; | |
2635 | buf->st_gid = 0; | |
2636 | ||
2637 | buf->st_dev = info.dwVolumeSerialNumber; | |
2638 | buf->st_rdev = info.dwVolumeSerialNumber; | |
2639 | ||
2640 | buf->st_size = info.nFileSizeLow; | |
2641 | ||
2642 | /* Convert timestamps to Unix format. */ | |
2643 | buf->st_mtime = convert_time (info.ftLastWriteTime); | |
2644 | buf->st_atime = convert_time (info.ftLastAccessTime); | |
2645 | if (buf->st_atime == 0) buf->st_atime = buf->st_mtime; | |
2646 | buf->st_ctime = convert_time (info.ftCreationTime); | |
2647 | if (buf->st_ctime == 0) buf->st_ctime = buf->st_mtime; | |
2648 | ||
2649 | /* determine rwx permissions */ | |
2650 | if (info.dwFileAttributes & FILE_ATTRIBUTE_READONLY) | |
2651 | permission = _S_IREAD; | |
2652 | else | |
2653 | permission = _S_IREAD | _S_IWRITE; | |
177c0ea7 | 2654 | |
16bb7578 GV |
2655 | if (info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) |
2656 | permission |= _S_IEXEC; | |
2657 | else | |
2658 | { | |
2659 | #if 0 /* no way of knowing the filename */ | |
2660 | char * p = strrchr (name, '.'); | |
2661 | if (p != NULL && | |
2662 | (stricmp (p, ".exe") == 0 || | |
2663 | stricmp (p, ".com") == 0 || | |
2664 | stricmp (p, ".bat") == 0 || | |
2665 | stricmp (p, ".cmd") == 0)) | |
2666 | permission |= _S_IEXEC; | |
2667 | #endif | |
2668 | } | |
2669 | ||
2670 | buf->st_mode |= permission | (permission >> 3) | (permission >> 6); | |
2671 | ||
2672 | return 0; | |
2673 | } | |
2674 | ||
2675 | int | |
2676 | utime (const char *name, struct utimbuf *times) | |
2677 | { | |
2678 | struct utimbuf deftime; | |
2679 | HANDLE fh; | |
2680 | FILETIME mtime; | |
2681 | FILETIME atime; | |
2682 | ||
2683 | if (times == NULL) | |
2684 | { | |
2685 | deftime.modtime = deftime.actime = time (NULL); | |
2686 | times = &deftime; | |
2687 | } | |
2688 | ||
2689 | /* Need write access to set times. */ | |
2690 | fh = CreateFile (name, GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, | |
2691 | 0, OPEN_EXISTING, 0, NULL); | |
2692 | if (fh) | |
2693 | { | |
2694 | convert_from_time_t (times->actime, &atime); | |
2695 | convert_from_time_t (times->modtime, &mtime); | |
2696 | if (!SetFileTime (fh, NULL, &atime, &mtime)) | |
2697 | { | |
2698 | CloseHandle (fh); | |
2699 | errno = EACCES; | |
2700 | return -1; | |
2701 | } | |
2702 | CloseHandle (fh); | |
2703 | } | |
2704 | else | |
2705 | { | |
2706 | errno = EINVAL; | |
2707 | return -1; | |
2708 | } | |
2709 | return 0; | |
2710 | } | |
2711 | ||
480b0c5b GV |
2712 | #ifdef HAVE_SOCKETS |
2713 | ||
2714 | /* Wrappers for winsock functions to map between our file descriptors | |
2715 | and winsock's handles; also set h_errno for convenience. | |
2716 | ||
2717 | To allow Emacs to run on systems which don't have winsock support | |
2718 | installed, we dynamically link to winsock on startup if present, and | |
2719 | otherwise provide the minimum necessary functionality | |
2720 | (eg. gethostname). */ | |
2721 | ||
2722 | /* function pointers for relevant socket functions */ | |
2723 | int (PASCAL *pfn_WSAStartup) (WORD wVersionRequired, LPWSADATA lpWSAData); | |
2724 | void (PASCAL *pfn_WSASetLastError) (int iError); | |
2725 | int (PASCAL *pfn_WSAGetLastError) (void); | |
26fb7bc4 | 2726 | int (PASCAL *pfn_WSAEventSelect) (SOCKET s, HANDLE hEventObject, long lNetworkEvents); |
64570b36 KS |
2727 | HANDLE (PASCAL *pfn_WSACreateEvent) (void); |
2728 | int (PASCAL *pfn_WSACloseEvent) (HANDLE hEvent); | |
480b0c5b GV |
2729 | int (PASCAL *pfn_socket) (int af, int type, int protocol); |
2730 | int (PASCAL *pfn_bind) (SOCKET s, const struct sockaddr *addr, int namelen); | |
2731 | int (PASCAL *pfn_connect) (SOCKET s, const struct sockaddr *addr, int namelen); | |
2732 | int (PASCAL *pfn_ioctlsocket) (SOCKET s, long cmd, u_long *argp); | |
2733 | int (PASCAL *pfn_recv) (SOCKET s, char * buf, int len, int flags); | |
2734 | int (PASCAL *pfn_send) (SOCKET s, const char * buf, int len, int flags); | |
2735 | int (PASCAL *pfn_closesocket) (SOCKET s); | |
2736 | int (PASCAL *pfn_shutdown) (SOCKET s, int how); | |
2737 | int (PASCAL *pfn_WSACleanup) (void); | |
2738 | ||
2739 | u_short (PASCAL *pfn_htons) (u_short hostshort); | |
2740 | u_short (PASCAL *pfn_ntohs) (u_short netshort); | |
2741 | unsigned long (PASCAL *pfn_inet_addr) (const char * cp); | |
2742 | int (PASCAL *pfn_gethostname) (char * name, int namelen); | |
2743 | struct hostent * (PASCAL *pfn_gethostbyname) (const char * name); | |
2744 | struct servent * (PASCAL *pfn_getservbyname) (const char * name, const char * proto); | |
ecd270eb | 2745 | int (PASCAL *pfn_getpeername) (SOCKET s, struct sockaddr *addr, int * namelen); |
962955c5 JR |
2746 | int (PASCAL *pfn_setsockopt) (SOCKET s, int level, int optname, |
2747 | const char * optval, int optlen); | |
2748 | int (PASCAL *pfn_listen) (SOCKET s, int backlog); | |
2749 | int (PASCAL *pfn_getsockname) (SOCKET s, struct sockaddr * name, | |
2750 | int * namelen); | |
2751 | SOCKET (PASCAL *pfn_accept) (SOCKET s, struct sockaddr * addr, int * addrlen); | |
2752 | int (PASCAL *pfn_recvfrom) (SOCKET s, char * buf, int len, int flags, | |
2753 | struct sockaddr * from, int * fromlen); | |
2754 | int (PASCAL *pfn_sendto) (SOCKET s, const char * buf, int len, int flags, | |
2755 | const struct sockaddr * to, int tolen); | |
2756 | ||
f1614061 RS |
2757 | /* SetHandleInformation is only needed to make sockets non-inheritable. */ |
2758 | BOOL (WINAPI *pfn_SetHandleInformation) (HANDLE object, DWORD mask, DWORD flags); | |
2759 | #ifndef HANDLE_FLAG_INHERIT | |
2760 | #define HANDLE_FLAG_INHERIT 1 | |
2761 | #endif | |
480b0c5b | 2762 | |
f249a012 RS |
2763 | HANDLE winsock_lib; |
2764 | static int winsock_inuse; | |
480b0c5b | 2765 | |
f249a012 | 2766 | BOOL |
480b0c5b GV |
2767 | term_winsock (void) |
2768 | { | |
f249a012 | 2769 | if (winsock_lib != NULL && winsock_inuse == 0) |
480b0c5b | 2770 | { |
f249a012 RS |
2771 | /* Not sure what would cause WSAENETDOWN, or even if it can happen |
2772 | after WSAStartup returns successfully, but it seems reasonable | |
2773 | to allow unloading winsock anyway in that case. */ | |
2774 | if (pfn_WSACleanup () == 0 || | |
2775 | pfn_WSAGetLastError () == WSAENETDOWN) | |
2776 | { | |
2777 | if (FreeLibrary (winsock_lib)) | |
2778 | winsock_lib = NULL; | |
2779 | return TRUE; | |
2780 | } | |
480b0c5b | 2781 | } |
f249a012 | 2782 | return FALSE; |
480b0c5b GV |
2783 | } |
2784 | ||
f249a012 RS |
2785 | BOOL |
2786 | init_winsock (int load_now) | |
480b0c5b GV |
2787 | { |
2788 | WSADATA winsockData; | |
2789 | ||
f249a012 RS |
2790 | if (winsock_lib != NULL) |
2791 | return TRUE; | |
f1614061 RS |
2792 | |
2793 | pfn_SetHandleInformation = NULL; | |
2794 | pfn_SetHandleInformation | |
2795 | = (void *) GetProcAddress (GetModuleHandle ("kernel32.dll"), | |
2796 | "SetHandleInformation"); | |
2797 | ||
64570b36 | 2798 | winsock_lib = LoadLibrary ("Ws2_32.dll"); |
480b0c5b GV |
2799 | |
2800 | if (winsock_lib != NULL) | |
2801 | { | |
2802 | /* dynamically link to socket functions */ | |
2803 | ||
2804 | #define LOAD_PROC(fn) \ | |
2805 | if ((pfn_##fn = (void *) GetProcAddress (winsock_lib, #fn)) == NULL) \ | |
2806 | goto fail; | |
2807 | ||
2808 | LOAD_PROC( WSAStartup ); | |
2809 | LOAD_PROC( WSASetLastError ); | |
2810 | LOAD_PROC( WSAGetLastError ); | |
26fb7bc4 | 2811 | LOAD_PROC( WSAEventSelect ); |
64570b36 KS |
2812 | LOAD_PROC( WSACreateEvent ); |
2813 | LOAD_PROC( WSACloseEvent ); | |
480b0c5b GV |
2814 | LOAD_PROC( socket ); |
2815 | LOAD_PROC( bind ); | |
2816 | LOAD_PROC( connect ); | |
2817 | LOAD_PROC( ioctlsocket ); | |
2818 | LOAD_PROC( recv ); | |
2819 | LOAD_PROC( send ); | |
2820 | LOAD_PROC( closesocket ); | |
2821 | LOAD_PROC( shutdown ); | |
2822 | LOAD_PROC( htons ); | |
2823 | LOAD_PROC( ntohs ); | |
2824 | LOAD_PROC( inet_addr ); | |
2825 | LOAD_PROC( gethostname ); | |
2826 | LOAD_PROC( gethostbyname ); | |
2827 | LOAD_PROC( getservbyname ); | |
ecd270eb | 2828 | LOAD_PROC( getpeername ); |
480b0c5b | 2829 | LOAD_PROC( WSACleanup ); |
962955c5 JR |
2830 | LOAD_PROC( setsockopt ); |
2831 | LOAD_PROC( listen ); | |
2832 | LOAD_PROC( getsockname ); | |
2833 | LOAD_PROC( accept ); | |
2834 | LOAD_PROC( recvfrom ); | |
2835 | LOAD_PROC( sendto ); | |
f249a012 RS |
2836 | #undef LOAD_PROC |
2837 | ||
480b0c5b GV |
2838 | /* specify version 1.1 of winsock */ |
2839 | if (pfn_WSAStartup (0x101, &winsockData) == 0) | |
2840 | { | |
f249a012 RS |
2841 | if (winsockData.wVersion != 0x101) |
2842 | goto fail; | |
2843 | ||
2844 | if (!load_now) | |
2845 | { | |
2846 | /* Report that winsock exists and is usable, but leave | |
2847 | socket functions disabled. I am assuming that calling | |
2848 | WSAStartup does not require any network interaction, | |
2849 | and in particular does not cause or require a dial-up | |
2850 | connection to be established. */ | |
2851 | ||
2852 | pfn_WSACleanup (); | |
2853 | FreeLibrary (winsock_lib); | |
2854 | winsock_lib = NULL; | |
2855 | } | |
2856 | winsock_inuse = 0; | |
2857 | return TRUE; | |
480b0c5b GV |
2858 | } |
2859 | ||
2860 | fail: | |
2861 | FreeLibrary (winsock_lib); | |
f249a012 | 2862 | winsock_lib = NULL; |
480b0c5b | 2863 | } |
f249a012 RS |
2864 | |
2865 | return FALSE; | |
480b0c5b GV |
2866 | } |
2867 | ||
2868 | ||
2869 | int h_errno = 0; | |
2870 | ||
2871 | /* function to set h_errno for compatability; map winsock error codes to | |
2872 | normal system codes where they overlap (non-overlapping definitions | |
2873 | are already in <sys/socket.h> */ | |
2874 | static void set_errno () | |
2875 | { | |
f249a012 | 2876 | if (winsock_lib == NULL) |
480b0c5b GV |
2877 | h_errno = EINVAL; |
2878 | else | |
2879 | h_errno = pfn_WSAGetLastError (); | |
2880 | ||
2881 | switch (h_errno) | |
2882 | { | |
2883 | case WSAEACCES: h_errno = EACCES; break; | |
2884 | case WSAEBADF: h_errno = EBADF; break; | |
2885 | case WSAEFAULT: h_errno = EFAULT; break; | |
2886 | case WSAEINTR: h_errno = EINTR; break; | |
2887 | case WSAEINVAL: h_errno = EINVAL; break; | |
2888 | case WSAEMFILE: h_errno = EMFILE; break; | |
2889 | case WSAENAMETOOLONG: h_errno = ENAMETOOLONG; break; | |
2890 | case WSAENOTEMPTY: h_errno = ENOTEMPTY; break; | |
2891 | } | |
2892 | errno = h_errno; | |
2893 | } | |
2894 | ||
2895 | static void check_errno () | |
2896 | { | |
f249a012 | 2897 | if (h_errno == 0 && winsock_lib != NULL) |
480b0c5b GV |
2898 | pfn_WSASetLastError (0); |
2899 | } | |
2900 | ||
d8fcc1b9 AI |
2901 | /* Extend strerror to handle the winsock-specific error codes. */ |
2902 | struct { | |
2903 | int errnum; | |
2904 | char * msg; | |
2905 | } _wsa_errlist[] = { | |
2906 | WSAEINTR , "Interrupted function call", | |
2907 | WSAEBADF , "Bad file descriptor", | |
2908 | WSAEACCES , "Permission denied", | |
2909 | WSAEFAULT , "Bad address", | |
2910 | WSAEINVAL , "Invalid argument", | |
2911 | WSAEMFILE , "Too many open files", | |
177c0ea7 | 2912 | |
d8fcc1b9 AI |
2913 | WSAEWOULDBLOCK , "Resource temporarily unavailable", |
2914 | WSAEINPROGRESS , "Operation now in progress", | |
2915 | WSAEALREADY , "Operation already in progress", | |
2916 | WSAENOTSOCK , "Socket operation on non-socket", | |
2917 | WSAEDESTADDRREQ , "Destination address required", | |
2918 | WSAEMSGSIZE , "Message too long", | |
2919 | WSAEPROTOTYPE , "Protocol wrong type for socket", | |
2920 | WSAENOPROTOOPT , "Bad protocol option", | |
2921 | WSAEPROTONOSUPPORT , "Protocol not supported", | |
2922 | WSAESOCKTNOSUPPORT , "Socket type not supported", | |
2923 | WSAEOPNOTSUPP , "Operation not supported", | |
2924 | WSAEPFNOSUPPORT , "Protocol family not supported", | |
2925 | WSAEAFNOSUPPORT , "Address family not supported by protocol family", | |
2926 | WSAEADDRINUSE , "Address already in use", | |
2927 | WSAEADDRNOTAVAIL , "Cannot assign requested address", | |
2928 | WSAENETDOWN , "Network is down", | |
2929 | WSAENETUNREACH , "Network is unreachable", | |
2930 | WSAENETRESET , "Network dropped connection on reset", | |
2931 | WSAECONNABORTED , "Software caused connection abort", | |
2932 | WSAECONNRESET , "Connection reset by peer", | |
2933 | WSAENOBUFS , "No buffer space available", | |
2934 | WSAEISCONN , "Socket is already connected", | |
2935 | WSAENOTCONN , "Socket is not connected", | |
2936 | WSAESHUTDOWN , "Cannot send after socket shutdown", | |
2937 | WSAETOOMANYREFS , "Too many references", /* not sure */ | |
2938 | WSAETIMEDOUT , "Connection timed out", | |
2939 | WSAECONNREFUSED , "Connection refused", | |
2940 | WSAELOOP , "Network loop", /* not sure */ | |
2941 | WSAENAMETOOLONG , "Name is too long", | |
2942 | WSAEHOSTDOWN , "Host is down", | |
2943 | WSAEHOSTUNREACH , "No route to host", | |
2944 | WSAENOTEMPTY , "Buffer not empty", /* not sure */ | |
2945 | WSAEPROCLIM , "Too many processes", | |
2946 | WSAEUSERS , "Too many users", /* not sure */ | |
2947 | WSAEDQUOT , "Double quote in host name", /* really not sure */ | |
2948 | WSAESTALE , "Data is stale", /* not sure */ | |
2949 | WSAEREMOTE , "Remote error", /* not sure */ | |
177c0ea7 | 2950 | |
d8fcc1b9 AI |
2951 | WSASYSNOTREADY , "Network subsystem is unavailable", |
2952 | WSAVERNOTSUPPORTED , "WINSOCK.DLL version out of range", | |
2953 | WSANOTINITIALISED , "Winsock not initialized successfully", | |
2954 | WSAEDISCON , "Graceful shutdown in progress", | |
2955 | #ifdef WSAENOMORE | |
2956 | WSAENOMORE , "No more operations allowed", /* not sure */ | |
2957 | WSAECANCELLED , "Operation cancelled", /* not sure */ | |
2958 | WSAEINVALIDPROCTABLE , "Invalid procedure table from service provider", | |
2959 | WSAEINVALIDPROVIDER , "Invalid service provider version number", | |
2960 | WSAEPROVIDERFAILEDINIT , "Unable to initialize a service provider", | |
2961 | WSASYSCALLFAILURE , "System call failured", | |
2962 | WSASERVICE_NOT_FOUND , "Service not found", /* not sure */ | |
2963 | WSATYPE_NOT_FOUND , "Class type not found", | |
2964 | WSA_E_NO_MORE , "No more resources available", /* really not sure */ | |
2965 | WSA_E_CANCELLED , "Operation already cancelled", /* really not sure */ | |
2966 | WSAEREFUSED , "Operation refused", /* not sure */ | |
2967 | #endif | |
177c0ea7 | 2968 | |
d8fcc1b9 AI |
2969 | WSAHOST_NOT_FOUND , "Host not found", |
2970 | WSATRY_AGAIN , "Authoritative host not found during name lookup", | |
2971 | WSANO_RECOVERY , "Non-recoverable error during name lookup", | |
2972 | WSANO_DATA , "Valid name, no data record of requested type", | |
2973 | ||
2974 | -1, NULL | |
2975 | }; | |
2976 | ||
2977 | char * | |
2978 | sys_strerror(int error_no) | |
2979 | { | |
2980 | int i; | |
2981 | static char unknown_msg[40]; | |
2982 | ||
a302c7ae AI |
2983 | if (error_no >= 0 && error_no < sys_nerr) |
2984 | return sys_errlist[error_no]; | |
d8fcc1b9 AI |
2985 | |
2986 | for (i = 0; _wsa_errlist[i].errnum >= 0; i++) | |
2987 | if (_wsa_errlist[i].errnum == error_no) | |
2988 | return _wsa_errlist[i].msg; | |
2989 | ||
2990 | sprintf(unknown_msg, "Unidentified error: %d", error_no); | |
2991 | return unknown_msg; | |
2992 | } | |
2993 | ||
480b0c5b GV |
2994 | /* [andrewi 3-May-96] I've had conflicting results using both methods, |
2995 | but I believe the method of keeping the socket handle separate (and | |
2996 | insuring it is not inheritable) is the correct one. */ | |
2997 | ||
2998 | //#define SOCK_REPLACE_HANDLE | |
2999 | ||
3000 | #ifdef SOCK_REPLACE_HANDLE | |
3001 | #define SOCK_HANDLE(fd) ((SOCKET) _get_osfhandle (fd)) | |
3002 | #else | |
3003 | #define SOCK_HANDLE(fd) ((SOCKET) fd_info[fd].hnd) | |
3004 | #endif | |
3005 | ||
962955c5 JR |
3006 | int socket_to_fd (SOCKET s); |
3007 | ||
480b0c5b GV |
3008 | int |
3009 | sys_socket(int af, int type, int protocol) | |
3010 | { | |
962955c5 | 3011 | SOCKET s; |
480b0c5b | 3012 | |
f249a012 | 3013 | if (winsock_lib == NULL) |
480b0c5b GV |
3014 | { |
3015 | h_errno = ENETDOWN; | |
3016 | return INVALID_SOCKET; | |
3017 | } | |
3018 | ||
3019 | check_errno (); | |
3020 | ||
3021 | /* call the real socket function */ | |
962955c5 | 3022 | s = pfn_socket (af, type, protocol); |
177c0ea7 | 3023 | |
480b0c5b | 3024 | if (s != INVALID_SOCKET) |
962955c5 | 3025 | return socket_to_fd (s); |
480b0c5b | 3026 | |
962955c5 JR |
3027 | set_errno (); |
3028 | return -1; | |
3029 | } | |
3030 | ||
3031 | /* Convert a SOCKET to a file descriptor. */ | |
3032 | int | |
3033 | socket_to_fd (SOCKET s) | |
3034 | { | |
3035 | int fd; | |
3036 | child_process * cp; | |
3037 | ||
3038 | /* Although under NT 3.5 _open_osfhandle will accept a socket | |
3039 | handle, if opened with SO_OPENTYPE == SO_SYNCHRONOUS_NONALERT, | |
3040 | that does not work under NT 3.1. However, we can get the same | |
3041 | effect by using a backdoor function to replace an existing | |
3042 | descriptor handle with the one we want. */ | |
3043 | ||
3044 | /* allocate a file descriptor (with appropriate flags) */ | |
3045 | fd = _open ("NUL:", _O_RDWR); | |
3046 | if (fd >= 0) | |
3047 | { | |
480b0c5b | 3048 | #ifdef SOCK_REPLACE_HANDLE |
962955c5 JR |
3049 | /* now replace handle to NUL with our socket handle */ |
3050 | CloseHandle ((HANDLE) _get_osfhandle (fd)); | |
3051 | _free_osfhnd (fd); | |
3052 | _set_osfhnd (fd, s); | |
3053 | /* setmode (fd, _O_BINARY); */ | |
480b0c5b | 3054 | #else |
962955c5 JR |
3055 | /* Make a non-inheritable copy of the socket handle. Note |
3056 | that it is possible that sockets aren't actually kernel | |
3057 | handles, which appears to be the case on Windows 9x when | |
3058 | the MS Proxy winsock client is installed. */ | |
3059 | { | |
3060 | /* Apparently there is a bug in NT 3.51 with some service | |
3061 | packs, which prevents using DuplicateHandle to make a | |
3062 | socket handle non-inheritable (causes WSACleanup to | |
3063 | hang). The work-around is to use SetHandleInformation | |
3064 | instead if it is available and implemented. */ | |
3065 | if (pfn_SetHandleInformation) | |
480b0c5b | 3066 | { |
962955c5 JR |
3067 | pfn_SetHandleInformation ((HANDLE) s, HANDLE_FLAG_INHERIT, 0); |
3068 | } | |
3069 | else | |
3070 | { | |
3071 | HANDLE parent = GetCurrentProcess (); | |
3072 | HANDLE new_s = INVALID_HANDLE_VALUE; | |
3073 | ||
3074 | if (DuplicateHandle (parent, | |
3075 | (HANDLE) s, | |
3076 | parent, | |
3077 | &new_s, | |
3078 | 0, | |
3079 | FALSE, | |
3080 | DUPLICATE_SAME_ACCESS)) | |
f1614061 | 3081 | { |
962955c5 JR |
3082 | /* It is possible that DuplicateHandle succeeds even |
3083 | though the socket wasn't really a kernel handle, | |
3084 | because a real handle has the same value. So | |
3085 | test whether the new handle really is a socket. */ | |
3086 | long nonblocking = 0; | |
3087 | if (pfn_ioctlsocket ((SOCKET) new_s, FIONBIO, &nonblocking) == 0) | |
ca149beb | 3088 | { |
962955c5 JR |
3089 | pfn_closesocket (s); |
3090 | s = (SOCKET) new_s; | |
3091 | } | |
3092 | else | |
3093 | { | |
3094 | CloseHandle (new_s); | |
3095 | } | |
177c0ea7 | 3096 | } |
480b0c5b | 3097 | } |
962955c5 JR |
3098 | } |
3099 | fd_info[fd].hnd = (HANDLE) s; | |
480b0c5b GV |
3100 | #endif |
3101 | ||
962955c5 JR |
3102 | /* set our own internal flags */ |
3103 | fd_info[fd].flags = FILE_SOCKET | FILE_BINARY | FILE_READ | FILE_WRITE; | |
480b0c5b | 3104 | |
962955c5 JR |
3105 | cp = new_child (); |
3106 | if (cp) | |
3107 | { | |
3108 | cp->fd = fd; | |
3109 | cp->status = STATUS_READ_ACKNOWLEDGED; | |
480b0c5b | 3110 | |
962955c5 JR |
3111 | /* attach child_process to fd_info */ |
3112 | if (fd_info[ fd ].cp != NULL) | |
3113 | { | |
3114 | DebPrint (("sys_socket: fd_info[%d] apparently in use!\n", fd)); | |
3115 | abort (); | |
480b0c5b GV |
3116 | } |
3117 | ||
962955c5 JR |
3118 | fd_info[ fd ].cp = cp; |
3119 | ||
3120 | /* success! */ | |
3121 | winsock_inuse++; /* count open sockets */ | |
3122 | return fd; | |
480b0c5b | 3123 | } |
480b0c5b | 3124 | |
962955c5 JR |
3125 | /* clean up */ |
3126 | _close (fd); | |
3127 | } | |
3128 | pfn_closesocket (s); | |
3129 | h_errno = EMFILE; | |
480b0c5b GV |
3130 | return -1; |
3131 | } | |
3132 | ||
3133 | ||
3134 | int | |
3135 | sys_bind (int s, const struct sockaddr * addr, int namelen) | |
3136 | { | |
f249a012 | 3137 | if (winsock_lib == NULL) |
480b0c5b GV |
3138 | { |
3139 | h_errno = ENOTSOCK; | |
3140 | return SOCKET_ERROR; | |
3141 | } | |
3142 | ||
3143 | check_errno (); | |
3144 | if (fd_info[s].flags & FILE_SOCKET) | |
3145 | { | |
3146 | int rc = pfn_bind (SOCK_HANDLE (s), addr, namelen); | |
3147 | if (rc == SOCKET_ERROR) | |
3148 | set_errno (); | |
3149 | return rc; | |
3150 | } | |
3151 | h_errno = ENOTSOCK; | |
3152 | return SOCKET_ERROR; | |
3153 | } | |
3154 | ||
3155 | ||
3156 | int | |
3157 | sys_connect (int s, const struct sockaddr * name, int namelen) | |
3158 | { | |
f249a012 | 3159 | if (winsock_lib == NULL) |
480b0c5b GV |
3160 | { |
3161 | h_errno = ENOTSOCK; | |
3162 | return SOCKET_ERROR; | |
3163 | } | |
3164 | ||
3165 | check_errno (); | |
3166 | if (fd_info[s].flags & FILE_SOCKET) | |
3167 | { | |
3168 | int rc = pfn_connect (SOCK_HANDLE (s), name, namelen); | |
3169 | if (rc == SOCKET_ERROR) | |
3170 | set_errno (); | |
3171 | return rc; | |
3172 | } | |
3173 | h_errno = ENOTSOCK; | |
3174 | return SOCKET_ERROR; | |
3175 | } | |
3176 | ||
3177 | u_short | |
3178 | sys_htons (u_short hostshort) | |
3179 | { | |
f249a012 | 3180 | return (winsock_lib != NULL) ? |
480b0c5b GV |
3181 | pfn_htons (hostshort) : hostshort; |
3182 | } | |
3183 | ||
3184 | u_short | |
3185 | sys_ntohs (u_short netshort) | |
3186 | { | |
f249a012 | 3187 | return (winsock_lib != NULL) ? |
480b0c5b GV |
3188 | pfn_ntohs (netshort) : netshort; |
3189 | } | |
3190 | ||
3191 | unsigned long | |
3192 | sys_inet_addr (const char * cp) | |
3193 | { | |
f249a012 | 3194 | return (winsock_lib != NULL) ? |
480b0c5b GV |
3195 | pfn_inet_addr (cp) : INADDR_NONE; |
3196 | } | |
3197 | ||
3198 | int | |
3199 | sys_gethostname (char * name, int namelen) | |
3200 | { | |
f249a012 | 3201 | if (winsock_lib != NULL) |
480b0c5b GV |
3202 | return pfn_gethostname (name, namelen); |
3203 | ||
3204 | if (namelen > MAX_COMPUTERNAME_LENGTH) | |
a302c7ae | 3205 | return !GetComputerName (name, (DWORD *)&namelen); |
480b0c5b GV |
3206 | |
3207 | h_errno = EFAULT; | |
3208 | return SOCKET_ERROR; | |
3209 | } | |
3210 | ||
3211 | struct hostent * | |
3212 | sys_gethostbyname(const char * name) | |
3213 | { | |
3214 | struct hostent * host; | |
3215 | ||
f249a012 | 3216 | if (winsock_lib == NULL) |
480b0c5b GV |
3217 | { |
3218 | h_errno = ENETDOWN; | |
3219 | return NULL; | |
3220 | } | |
3221 | ||
3222 | check_errno (); | |
3223 | host = pfn_gethostbyname (name); | |
3224 | if (!host) | |
3225 | set_errno (); | |
3226 | return host; | |
3227 | } | |
3228 | ||
3229 | struct servent * | |
3230 | sys_getservbyname(const char * name, const char * proto) | |
3231 | { | |
3232 | struct servent * serv; | |
3233 | ||
f249a012 | 3234 | if (winsock_lib == NULL) |
480b0c5b GV |
3235 | { |
3236 | h_errno = ENETDOWN; | |
3237 | return NULL; | |
3238 | } | |
3239 | ||
3240 | check_errno (); | |
3241 | serv = pfn_getservbyname (name, proto); | |
3242 | if (!serv) | |
3243 | set_errno (); | |
3244 | return serv; | |
3245 | } | |
3246 | ||
ecd270eb JR |
3247 | int |
3248 | sys_getpeername (int s, struct sockaddr *addr, int * namelen) | |
3249 | { | |
3250 | if (winsock_lib == NULL) | |
3251 | { | |
3252 | h_errno = ENETDOWN; | |
3253 | return SOCKET_ERROR; | |
3254 | } | |
3255 | ||
3256 | check_errno (); | |
3257 | if (fd_info[s].flags & FILE_SOCKET) | |
3258 | { | |
3259 | int rc = pfn_getpeername (SOCK_HANDLE (s), addr, namelen); | |
3260 | if (rc == SOCKET_ERROR) | |
3261 | set_errno (); | |
3262 | return rc; | |
3263 | } | |
3264 | h_errno = ENOTSOCK; | |
3265 | return SOCKET_ERROR; | |
3266 | } | |
3267 | ||
3268 | ||
380961a6 GV |
3269 | int |
3270 | sys_shutdown (int s, int how) | |
3271 | { | |
380961a6 GV |
3272 | if (winsock_lib == NULL) |
3273 | { | |
3274 | h_errno = ENETDOWN; | |
3275 | return SOCKET_ERROR; | |
3276 | } | |
3277 | ||
3278 | check_errno (); | |
3279 | if (fd_info[s].flags & FILE_SOCKET) | |
3280 | { | |
3281 | int rc = pfn_shutdown (SOCK_HANDLE (s), how); | |
962955c5 JR |
3282 | if (rc == SOCKET_ERROR) |
3283 | set_errno (); | |
3284 | return rc; | |
3285 | } | |
3286 | h_errno = ENOTSOCK; | |
3287 | return SOCKET_ERROR; | |
3288 | } | |
3289 | ||
3290 | int | |
a5a389bb | 3291 | sys_setsockopt (int s, int level, int optname, const void * optval, int optlen) |
962955c5 JR |
3292 | { |
3293 | if (winsock_lib == NULL) | |
3294 | { | |
3295 | h_errno = ENETDOWN; | |
3296 | return SOCKET_ERROR; | |
3297 | } | |
3298 | ||
3299 | check_errno (); | |
3300 | if (fd_info[s].flags & FILE_SOCKET) | |
3301 | { | |
3302 | int rc = pfn_setsockopt (SOCK_HANDLE (s), level, optname, | |
a5a389bb | 3303 | (const char *)optval, optlen); |
962955c5 JR |
3304 | if (rc == SOCKET_ERROR) |
3305 | set_errno (); | |
3306 | return rc; | |
3307 | } | |
3308 | h_errno = ENOTSOCK; | |
177c0ea7 | 3309 | return SOCKET_ERROR; |
962955c5 JR |
3310 | } |
3311 | ||
3312 | int | |
3313 | sys_listen (int s, int backlog) | |
3314 | { | |
3315 | if (winsock_lib == NULL) | |
3316 | { | |
3317 | h_errno = ENETDOWN; | |
3318 | return SOCKET_ERROR; | |
3319 | } | |
3320 | ||
3321 | check_errno (); | |
3322 | if (fd_info[s].flags & FILE_SOCKET) | |
3323 | { | |
3324 | int rc = pfn_listen (SOCK_HANDLE (s), backlog); | |
3325 | if (rc == SOCKET_ERROR) | |
3326 | set_errno (); | |
26fb7bc4 | 3327 | else |
64570b36 | 3328 | fd_info[s].flags |= FILE_LISTEN; |
962955c5 JR |
3329 | return rc; |
3330 | } | |
3331 | h_errno = ENOTSOCK; | |
177c0ea7 | 3332 | return SOCKET_ERROR; |
962955c5 JR |
3333 | } |
3334 | ||
3335 | int | |
3336 | sys_getsockname (int s, struct sockaddr * name, int * namelen) | |
3337 | { | |
3338 | if (winsock_lib == NULL) | |
3339 | { | |
3340 | h_errno = ENETDOWN; | |
3341 | return SOCKET_ERROR; | |
3342 | } | |
3343 | ||
3344 | check_errno (); | |
3345 | if (fd_info[s].flags & FILE_SOCKET) | |
3346 | { | |
3347 | int rc = pfn_getsockname (SOCK_HANDLE (s), name, namelen); | |
3348 | if (rc == SOCKET_ERROR) | |
3349 | set_errno (); | |
3350 | return rc; | |
3351 | } | |
3352 | h_errno = ENOTSOCK; | |
177c0ea7 | 3353 | return SOCKET_ERROR; |
962955c5 JR |
3354 | } |
3355 | ||
3356 | int | |
3357 | sys_accept (int s, struct sockaddr * addr, int * addrlen) | |
3358 | { | |
3359 | if (winsock_lib == NULL) | |
3360 | { | |
3361 | h_errno = ENETDOWN; | |
3362 | return -1; | |
3363 | } | |
3364 | ||
3365 | check_errno (); | |
26fb7bc4 | 3366 | if (fd_info[s].flags & FILE_LISTEN) |
962955c5 | 3367 | { |
a0ad1860 | 3368 | SOCKET t = pfn_accept (SOCK_HANDLE (s), addr, addrlen); |
64570b36 KS |
3369 | int fd = -1; |
3370 | if (t == INVALID_SOCKET) | |
3371 | set_errno (); | |
3372 | else | |
3373 | fd = socket_to_fd (t); | |
962955c5 | 3374 | |
64570b36 KS |
3375 | fd_info[s].cp->status = STATUS_READ_ACKNOWLEDGED; |
3376 | ResetEvent (fd_info[s].cp->char_avail); | |
3377 | return fd; | |
962955c5 JR |
3378 | } |
3379 | h_errno = ENOTSOCK; | |
3380 | return -1; | |
3381 | } | |
3382 | ||
3383 | int | |
3384 | sys_recvfrom (int s, char * buf, int len, int flags, | |
3385 | struct sockaddr * from, int * fromlen) | |
3386 | { | |
3387 | if (winsock_lib == NULL) | |
3388 | { | |
3389 | h_errno = ENETDOWN; | |
3390 | return SOCKET_ERROR; | |
3391 | } | |
3392 | ||
3393 | check_errno (); | |
3394 | if (fd_info[s].flags & FILE_SOCKET) | |
3395 | { | |
3396 | int rc = pfn_recvfrom (SOCK_HANDLE (s), buf, len, flags, from, fromlen); | |
3397 | if (rc == SOCKET_ERROR) | |
3398 | set_errno (); | |
3399 | return rc; | |
3400 | } | |
3401 | h_errno = ENOTSOCK; | |
3402 | return SOCKET_ERROR; | |
3403 | } | |
3404 | ||
3405 | int | |
3406 | sys_sendto (int s, const char * buf, int len, int flags, | |
3407 | const struct sockaddr * to, int tolen) | |
3408 | { | |
3409 | if (winsock_lib == NULL) | |
3410 | { | |
3411 | h_errno = ENETDOWN; | |
3412 | return SOCKET_ERROR; | |
3413 | } | |
3414 | ||
3415 | check_errno (); | |
3416 | if (fd_info[s].flags & FILE_SOCKET) | |
3417 | { | |
3418 | int rc = pfn_sendto (SOCK_HANDLE (s), buf, len, flags, to, tolen); | |
380961a6 GV |
3419 | if (rc == SOCKET_ERROR) |
3420 | set_errno (); | |
3421 | return rc; | |
3422 | } | |
3423 | h_errno = ENOTSOCK; | |
3424 | return SOCKET_ERROR; | |
3425 | } | |
3426 | ||
ecd270eb JR |
3427 | /* Windows does not have an fcntl function. Provide an implementation |
3428 | solely for making sockets non-blocking. */ | |
3429 | int | |
3430 | fcntl (int s, int cmd, int options) | |
3431 | { | |
3432 | if (winsock_lib == NULL) | |
3433 | { | |
3434 | h_errno = ENETDOWN; | |
3435 | return -1; | |
3436 | } | |
3437 | ||
3438 | check_errno (); | |
3439 | if (fd_info[s].flags & FILE_SOCKET) | |
3440 | { | |
3441 | if (cmd == F_SETFL && options == O_NDELAY) | |
3442 | { | |
3443 | unsigned long nblock = 1; | |
3444 | int rc = pfn_ioctlsocket (SOCK_HANDLE (s), FIONBIO, &nblock); | |
3445 | if (rc == SOCKET_ERROR) | |
3446 | set_errno(); | |
3447 | /* Keep track of the fact that we set this to non-blocking. */ | |
3448 | fd_info[s].flags |= FILE_NDELAY; | |
3449 | return rc; | |
3450 | } | |
3451 | else | |
3452 | { | |
3453 | h_errno = EINVAL; | |
3454 | return SOCKET_ERROR; | |
3455 | } | |
3456 | } | |
3457 | h_errno = ENOTSOCK; | |
3458 | return SOCKET_ERROR; | |
3459 | } | |
3460 | ||
480b0c5b GV |
3461 | #endif /* HAVE_SOCKETS */ |
3462 | ||
3463 | ||
3464 | /* Shadow main io functions: we need to handle pipes and sockets more | |
3465 | intelligently, and implement non-blocking mode as well. */ | |
3466 | ||
3467 | int | |
3468 | sys_close (int fd) | |
3469 | { | |
3470 | int rc; | |
3471 | ||
7559f399 | 3472 | if (fd < 0) |
480b0c5b GV |
3473 | { |
3474 | errno = EBADF; | |
3475 | return -1; | |
3476 | } | |
3477 | ||
7559f399 | 3478 | if (fd < MAXDESC && fd_info[fd].cp) |
480b0c5b GV |
3479 | { |
3480 | child_process * cp = fd_info[fd].cp; | |
3481 | ||
3482 | fd_info[fd].cp = NULL; | |
3483 | ||
3484 | if (CHILD_ACTIVE (cp)) | |
3485 | { | |
3486 | /* if last descriptor to active child_process then cleanup */ | |
3487 | int i; | |
3488 | for (i = 0; i < MAXDESC; i++) | |
3489 | { | |
3490 | if (i == fd) | |
3491 | continue; | |
3492 | if (fd_info[i].cp == cp) | |
3493 | break; | |
3494 | } | |
3495 | if (i == MAXDESC) | |
3496 | { | |
f249a012 | 3497 | #ifdef HAVE_SOCKETS |
480b0c5b GV |
3498 | if (fd_info[fd].flags & FILE_SOCKET) |
3499 | { | |
f249a012 RS |
3500 | #ifndef SOCK_REPLACE_HANDLE |
3501 | if (winsock_lib == NULL) abort (); | |
480b0c5b GV |
3502 | |
3503 | pfn_shutdown (SOCK_HANDLE (fd), 2); | |
3504 | rc = pfn_closesocket (SOCK_HANDLE (fd)); | |
f249a012 RS |
3505 | #endif |
3506 | winsock_inuse--; /* count open sockets */ | |
480b0c5b GV |
3507 | } |
3508 | #endif | |
3509 | delete_child (cp); | |
3510 | } | |
3511 | } | |
3512 | } | |
3513 | ||
3514 | /* Note that sockets do not need special treatment here (at least on | |
e9e23e23 | 3515 | NT and Windows 95 using the standard tcp/ip stacks) - it appears that |
480b0c5b GV |
3516 | closesocket is equivalent to CloseHandle, which is to be expected |
3517 | because socket handles are fully fledged kernel handles. */ | |
3518 | rc = _close (fd); | |
3519 | ||
7559f399 | 3520 | if (rc == 0 && fd < MAXDESC) |
480b0c5b GV |
3521 | fd_info[fd].flags = 0; |
3522 | ||
3523 | return rc; | |
3524 | } | |
3525 | ||
3526 | int | |
3527 | sys_dup (int fd) | |
3528 | { | |
3529 | int new_fd; | |
3530 | ||
3531 | new_fd = _dup (fd); | |
7559f399 | 3532 | if (new_fd >= 0 && new_fd < MAXDESC) |
480b0c5b GV |
3533 | { |
3534 | /* duplicate our internal info as well */ | |
3535 | fd_info[new_fd] = fd_info[fd]; | |
3536 | } | |
3537 | return new_fd; | |
3538 | } | |
3539 | ||
3540 | ||
3541 | int | |
3542 | sys_dup2 (int src, int dst) | |
3543 | { | |
3544 | int rc; | |
3545 | ||
3546 | if (dst < 0 || dst >= MAXDESC) | |
3547 | { | |
3548 | errno = EBADF; | |
3549 | return -1; | |
3550 | } | |
3551 | ||
3552 | /* make sure we close the destination first if it's a pipe or socket */ | |
3553 | if (src != dst && fd_info[dst].flags != 0) | |
3554 | sys_close (dst); | |
177c0ea7 | 3555 | |
480b0c5b GV |
3556 | rc = _dup2 (src, dst); |
3557 | if (rc == 0) | |
3558 | { | |
3559 | /* duplicate our internal info as well */ | |
3560 | fd_info[dst] = fd_info[src]; | |
3561 | } | |
3562 | return rc; | |
3563 | } | |
3564 | ||
480b0c5b GV |
3565 | /* Unix pipe() has only one arg */ |
3566 | int | |
3567 | sys_pipe (int * phandles) | |
3568 | { | |
3569 | int rc; | |
3570 | unsigned flags; | |
480b0c5b | 3571 | |
76b3903d GV |
3572 | /* make pipe handles non-inheritable; when we spawn a child, we |
3573 | replace the relevant handle with an inheritable one. Also put | |
3574 | pipes into binary mode; we will do text mode translation ourselves | |
3575 | if required. */ | |
3576 | rc = _pipe (phandles, 0, _O_NOINHERIT | _O_BINARY); | |
480b0c5b GV |
3577 | |
3578 | if (rc == 0) | |
3579 | { | |
cb72110d JR |
3580 | /* Protect against overflow, since Windows can open more handles than |
3581 | our fd_info array has room for. */ | |
3582 | if (phandles[0] >= MAXDESC || phandles[1] >= MAXDESC) | |
3583 | { | |
3584 | _close (phandles[0]); | |
3585 | _close (phandles[1]); | |
3586 | rc = -1; | |
3587 | } | |
3588 | else | |
3589 | { | |
3590 | flags = FILE_PIPE | FILE_READ | FILE_BINARY; | |
3591 | fd_info[phandles[0]].flags = flags; | |
480b0c5b | 3592 | |
cb72110d JR |
3593 | flags = FILE_PIPE | FILE_WRITE | FILE_BINARY; |
3594 | fd_info[phandles[1]].flags = flags; | |
3595 | } | |
480b0c5b GV |
3596 | } |
3597 | ||
3598 | return rc; | |
3599 | } | |
3600 | ||
f7554349 | 3601 | /* From ntproc.c */ |
78806724 | 3602 | extern int w32_pipe_read_delay; |
f7554349 | 3603 | |
480b0c5b GV |
3604 | /* Function to do blocking read of one byte, needed to implement |
3605 | select. It is only allowed on sockets and pipes. */ | |
3606 | int | |
3607 | _sys_read_ahead (int fd) | |
3608 | { | |
3609 | child_process * cp; | |
3610 | int rc; | |
3611 | ||
3612 | if (fd < 0 || fd >= MAXDESC) | |
3613 | return STATUS_READ_ERROR; | |
3614 | ||
3615 | cp = fd_info[fd].cp; | |
3616 | ||
3617 | if (cp == NULL || cp->fd != fd || cp->status != STATUS_READ_READY) | |
3618 | return STATUS_READ_ERROR; | |
3619 | ||
3620 | if ((fd_info[fd].flags & (FILE_PIPE | FILE_SOCKET)) == 0 | |
3621 | || (fd_info[fd].flags & FILE_READ) == 0) | |
3622 | { | |
3623 | DebPrint (("_sys_read_ahead: internal error: fd %d is not a pipe or socket!\n", fd)); | |
3624 | abort (); | |
3625 | } | |
177c0ea7 | 3626 | |
480b0c5b | 3627 | cp->status = STATUS_READ_IN_PROGRESS; |
177c0ea7 | 3628 | |
480b0c5b | 3629 | if (fd_info[fd].flags & FILE_PIPE) |
f7554349 | 3630 | { |
f7554349 KH |
3631 | rc = _read (fd, &cp->chr, sizeof (char)); |
3632 | ||
3633 | /* Give subprocess time to buffer some more output for us before | |
e9e23e23 | 3634 | reporting that input is available; we need this because Windows 95 |
f7554349 KH |
3635 | connects DOS programs to pipes by making the pipe appear to be |
3636 | the normal console stdout - as a result most DOS programs will | |
3637 | write to stdout without buffering, ie. one character at a | |
fbd6baed | 3638 | time. Even some W32 programs do this - "dir" in a command |
f7554349 KH |
3639 | shell on NT is very slow if we don't do this. */ |
3640 | if (rc > 0) | |
3641 | { | |
78806724 | 3642 | int wait = w32_pipe_read_delay; |
f7554349 KH |
3643 | |
3644 | if (wait > 0) | |
3645 | Sleep (wait); | |
3646 | else if (wait < 0) | |
3647 | while (++wait <= 0) | |
3648 | /* Yield remainder of our time slice, effectively giving a | |
3649 | temporary priority boost to the child process. */ | |
3650 | Sleep (0); | |
3651 | } | |
3652 | } | |
480b0c5b GV |
3653 | #ifdef HAVE_SOCKETS |
3654 | else if (fd_info[fd].flags & FILE_SOCKET) | |
ecd270eb JR |
3655 | { |
3656 | unsigned long nblock = 0; | |
3657 | /* We always want this to block, so temporarily disable NDELAY. */ | |
3658 | if (fd_info[fd].flags & FILE_NDELAY) | |
3659 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONBIO, &nblock); | |
3660 | ||
3661 | rc = pfn_recv (SOCK_HANDLE (fd), &cp->chr, sizeof (char), 0); | |
3662 | ||
3663 | if (fd_info[fd].flags & FILE_NDELAY) | |
3664 | { | |
3665 | nblock = 1; | |
3666 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONBIO, &nblock); | |
3667 | } | |
3668 | } | |
480b0c5b | 3669 | #endif |
177c0ea7 | 3670 | |
480b0c5b GV |
3671 | if (rc == sizeof (char)) |
3672 | cp->status = STATUS_READ_SUCCEEDED; | |
3673 | else | |
3674 | cp->status = STATUS_READ_FAILED; | |
3675 | ||
3676 | return cp->status; | |
3677 | } | |
3678 | ||
64570b36 KS |
3679 | int _sys_wait_accept (int fd) |
3680 | { | |
3681 | HANDLE hEv; | |
3682 | child_process * cp; | |
3683 | int rc; | |
3684 | ||
3685 | if (fd < 0 || fd >= MAXDESC) | |
3686 | return STATUS_READ_ERROR; | |
3687 | ||
3688 | cp = fd_info[fd].cp; | |
3689 | ||
3690 | if (cp == NULL || cp->fd != fd || cp->status != STATUS_READ_READY) | |
3691 | return STATUS_READ_ERROR; | |
3692 | ||
3693 | cp->status = STATUS_READ_FAILED; | |
3694 | ||
3695 | hEv = pfn_WSACreateEvent (); | |
3696 | rc = pfn_WSAEventSelect (SOCK_HANDLE (fd), hEv, FD_ACCEPT); | |
3697 | if (rc != SOCKET_ERROR) | |
3698 | { | |
3699 | rc = WaitForSingleObject (hEv, INFINITE); | |
3700 | pfn_WSAEventSelect (SOCK_HANDLE (fd), NULL, 0); | |
64570b36 KS |
3701 | if (rc == WAIT_OBJECT_0) |
3702 | cp->status = STATUS_READ_SUCCEEDED; | |
3703 | } | |
7046f191 | 3704 | pfn_WSACloseEvent (hEv); |
64570b36 KS |
3705 | |
3706 | return cp->status; | |
3707 | } | |
3708 | ||
480b0c5b GV |
3709 | int |
3710 | sys_read (int fd, char * buffer, unsigned int count) | |
3711 | { | |
3712 | int nchars; | |
480b0c5b GV |
3713 | int to_read; |
3714 | DWORD waiting; | |
76b3903d | 3715 | char * orig_buffer = buffer; |
480b0c5b | 3716 | |
7559f399 | 3717 | if (fd < 0) |
480b0c5b GV |
3718 | { |
3719 | errno = EBADF; | |
3720 | return -1; | |
3721 | } | |
3722 | ||
7559f399 | 3723 | if (fd < MAXDESC && fd_info[fd].flags & (FILE_PIPE | FILE_SOCKET)) |
480b0c5b GV |
3724 | { |
3725 | child_process *cp = fd_info[fd].cp; | |
3726 | ||
3727 | if ((fd_info[fd].flags & FILE_READ) == 0) | |
3728 | { | |
3729 | errno = EBADF; | |
3730 | return -1; | |
3731 | } | |
3732 | ||
76b3903d GV |
3733 | nchars = 0; |
3734 | ||
3735 | /* re-read CR carried over from last read */ | |
3736 | if (fd_info[fd].flags & FILE_LAST_CR) | |
3737 | { | |
3738 | if (fd_info[fd].flags & FILE_BINARY) abort (); | |
3739 | *buffer++ = 0x0d; | |
3740 | count--; | |
3741 | nchars++; | |
f52eb3ef | 3742 | fd_info[fd].flags &= ~FILE_LAST_CR; |
76b3903d GV |
3743 | } |
3744 | ||
480b0c5b GV |
3745 | /* presence of a child_process structure means we are operating in |
3746 | non-blocking mode - otherwise we just call _read directly. | |
3747 | Note that the child_process structure might be missing because | |
3748 | reap_subprocess has been called; in this case the pipe is | |
3749 | already broken, so calling _read on it is okay. */ | |
3750 | if (cp) | |
3751 | { | |
3752 | int current_status = cp->status; | |
3753 | ||
3754 | switch (current_status) | |
3755 | { | |
3756 | case STATUS_READ_FAILED: | |
3757 | case STATUS_READ_ERROR: | |
f52eb3ef GV |
3758 | /* report normal EOF if nothing in buffer */ |
3759 | if (nchars <= 0) | |
3760 | fd_info[fd].flags |= FILE_AT_EOF; | |
3761 | return nchars; | |
480b0c5b GV |
3762 | |
3763 | case STATUS_READ_READY: | |
3764 | case STATUS_READ_IN_PROGRESS: | |
3765 | DebPrint (("sys_read called when read is in progress\n")); | |
3766 | errno = EWOULDBLOCK; | |
3767 | return -1; | |
3768 | ||
3769 | case STATUS_READ_SUCCEEDED: | |
3770 | /* consume read-ahead char */ | |
3771 | *buffer++ = cp->chr; | |
3772 | count--; | |
76b3903d | 3773 | nchars++; |
480b0c5b GV |
3774 | cp->status = STATUS_READ_ACKNOWLEDGED; |
3775 | ResetEvent (cp->char_avail); | |
3776 | ||
3777 | case STATUS_READ_ACKNOWLEDGED: | |
3778 | break; | |
3779 | ||
3780 | default: | |
3781 | DebPrint (("sys_read: bad status %d\n", current_status)); | |
3782 | errno = EBADF; | |
3783 | return -1; | |
3784 | } | |
3785 | ||
3786 | if (fd_info[fd].flags & FILE_PIPE) | |
3787 | { | |
3788 | PeekNamedPipe ((HANDLE) _get_osfhandle (fd), NULL, 0, NULL, &waiting, NULL); | |
3789 | to_read = min (waiting, (DWORD) count); | |
f52eb3ef GV |
3790 | |
3791 | if (to_read > 0) | |
3792 | nchars += _read (fd, buffer, to_read); | |
480b0c5b GV |
3793 | } |
3794 | #ifdef HAVE_SOCKETS | |
3795 | else /* FILE_SOCKET */ | |
3796 | { | |
f249a012 | 3797 | if (winsock_lib == NULL) abort (); |
480b0c5b GV |
3798 | |
3799 | /* do the equivalent of a non-blocking read */ | |
3800 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONREAD, &waiting); | |
76b3903d | 3801 | if (waiting == 0 && nchars == 0) |
480b0c5b GV |
3802 | { |
3803 | h_errno = errno = EWOULDBLOCK; | |
3804 | return -1; | |
3805 | } | |
3806 | ||
480b0c5b GV |
3807 | if (waiting) |
3808 | { | |
3809 | /* always use binary mode for sockets */ | |
76b3903d GV |
3810 | int res = pfn_recv (SOCK_HANDLE (fd), buffer, count, 0); |
3811 | if (res == SOCKET_ERROR) | |
480b0c5b GV |
3812 | { |
3813 | DebPrint(("sys_read.recv failed with error %d on socket %ld\n", | |
3814 | pfn_WSAGetLastError (), SOCK_HANDLE (fd))); | |
76b3903d GV |
3815 | set_errno (); |
3816 | return -1; | |
480b0c5b | 3817 | } |
76b3903d | 3818 | nchars += res; |
480b0c5b GV |
3819 | } |
3820 | } | |
3821 | #endif | |
3822 | } | |
3823 | else | |
f52eb3ef GV |
3824 | { |
3825 | int nread = _read (fd, buffer, count); | |
3826 | if (nread >= 0) | |
3827 | nchars += nread; | |
3828 | else if (nchars == 0) | |
3829 | nchars = nread; | |
3830 | } | |
76b3903d | 3831 | |
f52eb3ef GV |
3832 | if (nchars <= 0) |
3833 | fd_info[fd].flags |= FILE_AT_EOF; | |
76b3903d | 3834 | /* Perform text mode translation if required. */ |
f52eb3ef | 3835 | else if ((fd_info[fd].flags & FILE_BINARY) == 0) |
76b3903d GV |
3836 | { |
3837 | nchars = crlf_to_lf (nchars, orig_buffer); | |
3838 | /* If buffer contains only CR, return that. To be absolutely | |
3839 | sure we should attempt to read the next char, but in | |
3840 | practice a CR to be followed by LF would not appear by | |
3841 | itself in the buffer. */ | |
3842 | if (nchars > 1 && orig_buffer[nchars - 1] == 0x0d) | |
3843 | { | |
3844 | fd_info[fd].flags |= FILE_LAST_CR; | |
3845 | nchars--; | |
3846 | } | |
76b3903d | 3847 | } |
480b0c5b GV |
3848 | } |
3849 | else | |
3850 | nchars = _read (fd, buffer, count); | |
3851 | ||
76b3903d | 3852 | return nchars; |
480b0c5b GV |
3853 | } |
3854 | ||
3855 | /* For now, don't bother with a non-blocking mode */ | |
3856 | int | |
3857 | sys_write (int fd, const void * buffer, unsigned int count) | |
3858 | { | |
3859 | int nchars; | |
3860 | ||
7559f399 | 3861 | if (fd < 0) |
480b0c5b GV |
3862 | { |
3863 | errno = EBADF; | |
3864 | return -1; | |
3865 | } | |
3866 | ||
7559f399 | 3867 | if (fd < MAXDESC && fd_info[fd].flags & (FILE_PIPE | FILE_SOCKET)) |
76b3903d GV |
3868 | { |
3869 | if ((fd_info[fd].flags & FILE_WRITE) == 0) | |
3870 | { | |
3871 | errno = EBADF; | |
3872 | return -1; | |
3873 | } | |
3874 | ||
3875 | /* Perform text mode translation if required. */ | |
3876 | if ((fd_info[fd].flags & FILE_BINARY) == 0) | |
3877 | { | |
3878 | char * tmpbuf = alloca (count * 2); | |
3879 | unsigned char * src = (void *)buffer; | |
3880 | unsigned char * dst = tmpbuf; | |
3881 | int nbytes = count; | |
3882 | ||
3883 | while (1) | |
3884 | { | |
3885 | unsigned char *next; | |
3886 | /* copy next line or remaining bytes */ | |
3887 | next = _memccpy (dst, src, '\n', nbytes); | |
3888 | if (next) | |
3889 | { | |
3890 | /* copied one line ending with '\n' */ | |
3891 | int copied = next - dst; | |
3892 | nbytes -= copied; | |
3893 | src += copied; | |
3894 | /* insert '\r' before '\n' */ | |
3895 | next[-1] = '\r'; | |
3896 | next[0] = '\n'; | |
3897 | dst = next + 1; | |
3898 | count++; | |
177c0ea7 | 3899 | } |
76b3903d GV |
3900 | else |
3901 | /* copied remaining partial line -> now finished */ | |
3902 | break; | |
3903 | } | |
3904 | buffer = tmpbuf; | |
3905 | } | |
3906 | } | |
3907 | ||
480b0c5b | 3908 | #ifdef HAVE_SOCKETS |
7559f399 | 3909 | if (fd < MAXDESC && fd_info[fd].flags & FILE_SOCKET) |
480b0c5b | 3910 | { |
30a32e0e | 3911 | unsigned long nblock = 0; |
f249a012 | 3912 | if (winsock_lib == NULL) abort (); |
30a32e0e JR |
3913 | |
3914 | /* TODO: implement select() properly so non-blocking I/O works. */ | |
3915 | /* For now, make sure the write blocks. */ | |
3916 | if (fd_info[fd].flags & FILE_NDELAY) | |
3917 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONBIO, &nblock); | |
3918 | ||
480b0c5b | 3919 | nchars = pfn_send (SOCK_HANDLE (fd), buffer, count, 0); |
30a32e0e JR |
3920 | |
3921 | /* Set the socket back to non-blocking if it was before, | |
3922 | for other operations that support it. */ | |
3923 | if (fd_info[fd].flags & FILE_NDELAY) | |
3924 | { | |
3925 | nblock = 1; | |
3926 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONBIO, &nblock); | |
3927 | } | |
3928 | ||
480b0c5b GV |
3929 | if (nchars == SOCKET_ERROR) |
3930 | { | |
670773af | 3931 | DebPrint(("sys_write.send failed with error %d on socket %ld\n", |
480b0c5b GV |
3932 | pfn_WSAGetLastError (), SOCK_HANDLE (fd))); |
3933 | set_errno (); | |
3934 | } | |
3935 | } | |
3936 | else | |
3937 | #endif | |
3938 | nchars = _write (fd, buffer, count); | |
3939 | ||
3940 | return nchars; | |
3941 | } | |
3942 | ||
f52eb3ef GV |
3943 | static void |
3944 | check_windows_init_file () | |
3945 | { | |
3946 | extern int noninteractive, inhibit_window_system; | |
3947 | ||
3948 | /* A common indication that Emacs is not installed properly is when | |
3949 | it cannot find the Windows installation file. If this file does | |
3950 | not exist in the expected place, tell the user. */ | |
3951 | ||
177c0ea7 | 3952 | if (!noninteractive && !inhibit_window_system) |
d54abccd GV |
3953 | { |
3954 | extern Lisp_Object Vwindow_system, Vload_path, Qfile_exists_p; | |
a0b9c838 | 3955 | Lisp_Object objs[2]; |
96ef7d42 | 3956 | Lisp_Object full_load_path; |
d54abccd GV |
3957 | Lisp_Object init_file; |
3958 | int fd; | |
f52eb3ef | 3959 | |
a0b9c838 GV |
3960 | objs[0] = Vload_path; |
3961 | objs[1] = decode_env_path (0, (getenv ("EMACSLOADPATH"))); | |
3962 | full_load_path = Fappend (2, objs); | |
d54abccd | 3963 | init_file = build_string ("term/w32-win"); |
c50a2aa6 | 3964 | fd = openp (full_load_path, init_file, Fget_load_suffixes (), NULL, Qnil); |
177c0ea7 | 3965 | if (fd < 0) |
d54abccd | 3966 | { |
96ef7d42 | 3967 | Lisp_Object load_path_print = Fprin1_to_string (full_load_path, Qnil); |
d5db4077 KR |
3968 | char *init_file_name = SDATA (init_file); |
3969 | char *load_path = SDATA (load_path_print); | |
acc23b87 KS |
3970 | char *buffer = alloca (1024 |
3971 | + strlen (init_file_name) | |
3972 | + strlen (load_path)); | |
d54abccd | 3973 | |
177c0ea7 | 3974 | sprintf (buffer, |
d54abccd GV |
3975 | "The Emacs Windows initialization file \"%s.el\" " |
3976 | "could not be found in your Emacs installation. " | |
3977 | "Emacs checked the following directories for this file:\n" | |
3978 | "\n%s\n\n" | |
3979 | "When Emacs cannot find this file, it usually means that it " | |
3980 | "was not installed properly, or its distribution file was " | |
3981 | "not unpacked properly.\nSee the README.W32 file in the " | |
3982 | "top-level Emacs directory for more information.", | |
3983 | init_file_name, load_path); | |
3984 | MessageBox (NULL, | |
3985 | buffer, | |
3986 | "Emacs Abort Dialog", | |
3987 | MB_OK | MB_ICONEXCLAMATION | MB_TASKMODAL); | |
f52eb3ef GV |
3988 | /* Use the low-level Emacs abort. */ |
3989 | #undef abort | |
d54abccd GV |
3990 | abort (); |
3991 | } | |
3992 | else | |
3993 | { | |
a302c7ae | 3994 | _close (fd); |
d54abccd | 3995 | } |
f52eb3ef | 3996 | } |
f52eb3ef | 3997 | } |
480b0c5b GV |
3998 | |
3999 | void | |
4000 | term_ntproc () | |
4001 | { | |
4002 | #ifdef HAVE_SOCKETS | |
4003 | /* shutdown the socket interface if necessary */ | |
4004 | term_winsock (); | |
4005 | #endif | |
52c7f9ee JR |
4006 | |
4007 | term_w32select (); | |
480b0c5b GV |
4008 | } |
4009 | ||
4010 | void | |
4011 | init_ntproc () | |
4012 | { | |
4013 | #ifdef HAVE_SOCKETS | |
f249a012 RS |
4014 | /* Initialise the socket interface now if available and requested by |
4015 | the user by defining PRELOAD_WINSOCK; otherwise loading will be | |
fbd6baed | 4016 | delayed until open-network-stream is called (w32-has-winsock can |
f249a012 RS |
4017 | also be used to dynamically load or reload winsock). |
4018 | ||
4019 | Conveniently, init_environment is called before us, so | |
4020 | PRELOAD_WINSOCK can be set in the registry. */ | |
4021 | ||
4022 | /* Always initialize this correctly. */ | |
4023 | winsock_lib = NULL; | |
4024 | ||
4025 | if (getenv ("PRELOAD_WINSOCK") != NULL) | |
4026 | init_winsock (TRUE); | |
480b0c5b GV |
4027 | #endif |
4028 | ||
4029 | /* Initial preparation for subprocess support: replace our standard | |
4030 | handles with non-inheritable versions. */ | |
4031 | { | |
4032 | HANDLE parent; | |
4033 | HANDLE stdin_save = INVALID_HANDLE_VALUE; | |
4034 | HANDLE stdout_save = INVALID_HANDLE_VALUE; | |
4035 | HANDLE stderr_save = INVALID_HANDLE_VALUE; | |
4036 | ||
4037 | parent = GetCurrentProcess (); | |
4038 | ||
4039 | /* ignore errors when duplicating and closing; typically the | |
4040 | handles will be invalid when running as a gui program. */ | |
177c0ea7 JB |
4041 | DuplicateHandle (parent, |
4042 | GetStdHandle (STD_INPUT_HANDLE), | |
480b0c5b | 4043 | parent, |
177c0ea7 JB |
4044 | &stdin_save, |
4045 | 0, | |
4046 | FALSE, | |
480b0c5b | 4047 | DUPLICATE_SAME_ACCESS); |
177c0ea7 | 4048 | |
480b0c5b GV |
4049 | DuplicateHandle (parent, |
4050 | GetStdHandle (STD_OUTPUT_HANDLE), | |
4051 | parent, | |
4052 | &stdout_save, | |
4053 | 0, | |
4054 | FALSE, | |
4055 | DUPLICATE_SAME_ACCESS); | |
177c0ea7 | 4056 | |
480b0c5b GV |
4057 | DuplicateHandle (parent, |
4058 | GetStdHandle (STD_ERROR_HANDLE), | |
4059 | parent, | |
4060 | &stderr_save, | |
4061 | 0, | |
4062 | FALSE, | |
4063 | DUPLICATE_SAME_ACCESS); | |
177c0ea7 | 4064 | |
480b0c5b GV |
4065 | fclose (stdin); |
4066 | fclose (stdout); | |
4067 | fclose (stderr); | |
4068 | ||
4069 | if (stdin_save != INVALID_HANDLE_VALUE) | |
4070 | _open_osfhandle ((long) stdin_save, O_TEXT); | |
4071 | else | |
76b3903d GV |
4072 | _open ("nul", O_TEXT | O_NOINHERIT | O_RDONLY); |
4073 | _fdopen (0, "r"); | |
480b0c5b GV |
4074 | |
4075 | if (stdout_save != INVALID_HANDLE_VALUE) | |
4076 | _open_osfhandle ((long) stdout_save, O_TEXT); | |
4077 | else | |
76b3903d GV |
4078 | _open ("nul", O_TEXT | O_NOINHERIT | O_WRONLY); |
4079 | _fdopen (1, "w"); | |
480b0c5b GV |
4080 | |
4081 | if (stderr_save != INVALID_HANDLE_VALUE) | |
4082 | _open_osfhandle ((long) stderr_save, O_TEXT); | |
4083 | else | |
76b3903d GV |
4084 | _open ("nul", O_TEXT | O_NOINHERIT | O_WRONLY); |
4085 | _fdopen (2, "w"); | |
480b0c5b GV |
4086 | } |
4087 | ||
4088 | /* unfortunately, atexit depends on implementation of malloc */ | |
4089 | /* atexit (term_ntproc); */ | |
4090 | signal (SIGABRT, term_ntproc); | |
76b3903d GV |
4091 | |
4092 | /* determine which drives are fixed, for GetCachedVolumeInformation */ | |
4093 | { | |
4094 | /* GetDriveType must have trailing backslash. */ | |
4095 | char drive[] = "A:\\"; | |
4096 | ||
4097 | /* Loop over all possible drive letters */ | |
4098 | while (*drive <= 'Z') | |
4099 | { | |
4100 | /* Record if this drive letter refers to a fixed drive. */ | |
177c0ea7 | 4101 | fixed_drives[DRIVE_INDEX (*drive)] = |
76b3903d GV |
4102 | (GetDriveType (drive) == DRIVE_FIXED); |
4103 | ||
4104 | (*drive)++; | |
4105 | } | |
a302c7ae AI |
4106 | |
4107 | /* Reset the volume info cache. */ | |
4108 | volume_cache = NULL; | |
76b3903d | 4109 | } |
177c0ea7 | 4110 | |
d54abccd GV |
4111 | /* Check to see if Emacs has been installed correctly. */ |
4112 | check_windows_init_file (); | |
480b0c5b GV |
4113 | } |
4114 | ||
a8c3a596 JR |
4115 | /* |
4116 | shutdown_handler ensures that buffers' autosave files are | |
4117 | up to date when the user logs off, or the system shuts down. | |
4118 | */ | |
4119 | BOOL WINAPI shutdown_handler(DWORD type) | |
4120 | { | |
4121 | /* Ctrl-C and Ctrl-Break are already suppressed, so don't handle them. */ | |
4122 | if (type == CTRL_CLOSE_EVENT /* User closes console window. */ | |
4123 | || type == CTRL_LOGOFF_EVENT /* User logs off. */ | |
4124 | || type == CTRL_SHUTDOWN_EVENT) /* User shutsdown. */ | |
4125 | { | |
4126 | /* Shut down cleanly, making sure autosave files are up to date. */ | |
4127 | shut_down_emacs (0, 0, Qnil); | |
4128 | } | |
4129 | ||
7046f191 | 4130 | /* Allow other handlers to handle this signal. */ |
a8c3a596 JR |
4131 | return FALSE; |
4132 | } | |
4133 | ||
9785d95b BK |
4134 | /* |
4135 | globals_of_w32 is used to initialize those global variables that | |
4136 | must always be initialized on startup even when the global variable | |
4137 | initialized is non zero (see the function main in emacs.c). | |
4138 | */ | |
4139 | void globals_of_w32 () | |
4140 | { | |
4141 | g_b_init_is_windows_9x = 0; | |
4142 | g_b_init_open_process_token = 0; | |
4143 | g_b_init_get_token_information = 0; | |
4144 | g_b_init_lookup_account_sid = 0; | |
4145 | g_b_init_get_sid_identifier_authority = 0; | |
a8c3a596 JR |
4146 | /* The following sets a handler for shutdown notifications for |
4147 | console apps. This actually applies to Emacs in both console and | |
4148 | GUI modes, since we had to fool windows into thinking emacs is a | |
4149 | console application to get console mode to work. */ | |
4150 | SetConsoleCtrlHandler(shutdown_handler, TRUE); | |
9785d95b BK |
4151 | } |
4152 | ||
480b0c5b | 4153 | /* end of nt.c */ |
ab5796a9 MB |
4154 | |
4155 | /* arch-tag: 90442dd3-37be-482b-b272-ac752e3049f1 | |
4156 | (do not change this comment) */ |