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, |
4e6835db | 3 | 2005, 2006, 2007 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> |
22189f79 | 35 | #include <mbstring.h> /* for _mbspbrk */ |
480b0c5b GV |
36 | |
37 | /* must include CRT headers *before* config.h */ | |
4838e624 PJ |
38 | |
39 | #ifdef HAVE_CONFIG_H | |
40 | #include <config.h> | |
41 | #endif | |
42 | ||
480b0c5b GV |
43 | #undef access |
44 | #undef chdir | |
45 | #undef chmod | |
46 | #undef creat | |
47 | #undef ctime | |
48 | #undef fopen | |
49 | #undef link | |
50 | #undef mkdir | |
51 | #undef mktemp | |
52 | #undef open | |
53 | #undef rename | |
54 | #undef rmdir | |
55 | #undef unlink | |
56 | ||
57 | #undef close | |
58 | #undef dup | |
59 | #undef dup2 | |
60 | #undef pipe | |
61 | #undef read | |
62 | #undef write | |
95ed0025 | 63 | |
d8fcc1b9 AI |
64 | #undef strerror |
65 | ||
95ed0025 | 66 | #include "lisp.h" |
95ed0025 RS |
67 | |
68 | #include <pwd.h> | |
3d19b645 | 69 | #include <grp.h> |
95ed0025 | 70 | |
971bce75 AI |
71 | #ifdef __GNUC__ |
72 | #define _ANONYMOUS_UNION | |
73 | #define _ANONYMOUS_STRUCT | |
74 | #endif | |
480b0c5b | 75 | #include <windows.h> |
2d5324c5 | 76 | #include <shlobj.h> |
00b3b7b3 | 77 | |
480b0c5b GV |
78 | #ifdef HAVE_SOCKETS /* TCP connection support, if kernel can do it */ |
79 | #include <sys/socket.h> | |
80 | #undef socket | |
81 | #undef bind | |
82 | #undef connect | |
83 | #undef htons | |
84 | #undef ntohs | |
85 | #undef inet_addr | |
86 | #undef gethostname | |
87 | #undef gethostbyname | |
88 | #undef getservbyname | |
ecd270eb | 89 | #undef getpeername |
380961a6 | 90 | #undef shutdown |
962955c5 JR |
91 | #undef setsockopt |
92 | #undef listen | |
93 | #undef getsockname | |
94 | #undef accept | |
95 | #undef recvfrom | |
96 | #undef sendto | |
480b0c5b | 97 | #endif |
00b3b7b3 | 98 | |
489f9371 | 99 | #include "w32.h" |
480b0c5b | 100 | #include "ndir.h" |
489f9371 | 101 | #include "w32heap.h" |
253574a6 JR |
102 | #include "systime.h" |
103 | ||
2d5324c5 JR |
104 | typedef HRESULT (WINAPI * ShGetFolderPath_fn) |
105 | (IN HWND, IN int, IN HANDLE, IN DWORD, OUT char *); | |
106 | ||
9785d95b BK |
107 | void globals_of_w32 (); |
108 | ||
76b3903d GV |
109 | extern Lisp_Object Vw32_downcase_file_names; |
110 | extern Lisp_Object Vw32_generate_fake_inodes; | |
111 | extern Lisp_Object Vw32_get_true_file_attributes; | |
e0c181dd | 112 | extern int w32_num_mouse_buttons; |
76b3903d | 113 | |
18e070ac | 114 | \f |
9785d95b BK |
115 | /* |
116 | Initialization states | |
117 | */ | |
118 | static BOOL g_b_init_is_windows_9x; | |
119 | static BOOL g_b_init_open_process_token; | |
120 | static BOOL g_b_init_get_token_information; | |
121 | static BOOL g_b_init_lookup_account_sid; | |
122 | static BOOL g_b_init_get_sid_identifier_authority; | |
123 | ||
f60ae425 BK |
124 | /* |
125 | BEGIN: Wrapper functions around OpenProcessToken | |
126 | and other functions in advapi32.dll that are only | |
127 | supported in Windows NT / 2k / XP | |
128 | */ | |
129 | /* ** Function pointer typedefs ** */ | |
130 | typedef BOOL (WINAPI * OpenProcessToken_Proc) ( | |
131 | HANDLE ProcessHandle, | |
132 | DWORD DesiredAccess, | |
133 | PHANDLE TokenHandle); | |
134 | typedef BOOL (WINAPI * GetTokenInformation_Proc) ( | |
135 | HANDLE TokenHandle, | |
136 | TOKEN_INFORMATION_CLASS TokenInformationClass, | |
137 | LPVOID TokenInformation, | |
138 | DWORD TokenInformationLength, | |
139 | PDWORD ReturnLength); | |
140 | #ifdef _UNICODE | |
141 | const char * const LookupAccountSid_Name = "LookupAccountSidW"; | |
142 | #else | |
143 | const char * const LookupAccountSid_Name = "LookupAccountSidA"; | |
144 | #endif | |
145 | typedef BOOL (WINAPI * LookupAccountSid_Proc) ( | |
146 | LPCTSTR lpSystemName, | |
147 | PSID Sid, | |
148 | LPTSTR Name, | |
149 | LPDWORD cbName, | |
150 | LPTSTR DomainName, | |
151 | LPDWORD cbDomainName, | |
152 | PSID_NAME_USE peUse); | |
153 | typedef PSID_IDENTIFIER_AUTHORITY (WINAPI * GetSidIdentifierAuthority_Proc) ( | |
154 | PSID pSid); | |
155 | ||
156 | /* ** A utility function ** */ | |
9bfb11f9 KS |
157 | static BOOL |
158 | is_windows_9x () | |
f60ae425 | 159 | { |
9785d95b | 160 | static BOOL s_b_ret=0; |
f60ae425 | 161 | OSVERSIONINFO os_ver; |
9785d95b | 162 | if (g_b_init_is_windows_9x == 0) |
f60ae425 | 163 | { |
9785d95b BK |
164 | g_b_init_is_windows_9x = 1; |
165 | ZeroMemory(&os_ver, sizeof(OSVERSIONINFO)); | |
166 | os_ver.dwOSVersionInfoSize = sizeof(OSVERSIONINFO); | |
167 | if (GetVersionEx (&os_ver)) | |
168 | { | |
169 | s_b_ret = (os_ver.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS); | |
170 | } | |
f60ae425 | 171 | } |
9785d95b | 172 | return s_b_ret; |
f60ae425 BK |
173 | } |
174 | ||
175 | /* ** The wrapper functions ** */ | |
176 | ||
177 | BOOL WINAPI open_process_token ( | |
178 | HANDLE ProcessHandle, | |
179 | DWORD DesiredAccess, | |
180 | PHANDLE TokenHandle) | |
181 | { | |
9785d95b | 182 | static OpenProcessToken_Proc s_pfn_Open_Process_Token = NULL; |
f60ae425 BK |
183 | HMODULE hm_advapi32 = NULL; |
184 | if (is_windows_9x () == TRUE) | |
185 | { | |
186 | return FALSE; | |
187 | } | |
9785d95b BK |
188 | if (g_b_init_open_process_token == 0) |
189 | { | |
190 | g_b_init_open_process_token = 1; | |
191 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
192 | s_pfn_Open_Process_Token = | |
193 | (OpenProcessToken_Proc) GetProcAddress (hm_advapi32, "OpenProcessToken"); | |
194 | } | |
195 | if (s_pfn_Open_Process_Token == NULL) | |
f60ae425 BK |
196 | { |
197 | return FALSE; | |
198 | } | |
199 | return ( | |
9785d95b | 200 | s_pfn_Open_Process_Token ( |
f60ae425 BK |
201 | ProcessHandle, |
202 | DesiredAccess, | |
203 | TokenHandle) | |
204 | ); | |
205 | } | |
206 | ||
207 | BOOL WINAPI get_token_information ( | |
208 | HANDLE TokenHandle, | |
209 | TOKEN_INFORMATION_CLASS TokenInformationClass, | |
210 | LPVOID TokenInformation, | |
211 | DWORD TokenInformationLength, | |
212 | PDWORD ReturnLength) | |
213 | { | |
9785d95b | 214 | static GetTokenInformation_Proc s_pfn_Get_Token_Information = NULL; |
f60ae425 BK |
215 | HMODULE hm_advapi32 = NULL; |
216 | if (is_windows_9x () == TRUE) | |
217 | { | |
218 | return FALSE; | |
219 | } | |
9785d95b BK |
220 | if (g_b_init_get_token_information == 0) |
221 | { | |
222 | g_b_init_get_token_information = 1; | |
223 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
224 | s_pfn_Get_Token_Information = | |
225 | (GetTokenInformation_Proc) GetProcAddress (hm_advapi32, "GetTokenInformation"); | |
226 | } | |
227 | if (s_pfn_Get_Token_Information == NULL) | |
f60ae425 BK |
228 | { |
229 | return FALSE; | |
230 | } | |
231 | return ( | |
9785d95b | 232 | s_pfn_Get_Token_Information ( |
f60ae425 BK |
233 | TokenHandle, |
234 | TokenInformationClass, | |
235 | TokenInformation, | |
236 | TokenInformationLength, | |
237 | ReturnLength) | |
238 | ); | |
239 | } | |
240 | ||
241 | BOOL WINAPI lookup_account_sid ( | |
242 | LPCTSTR lpSystemName, | |
243 | PSID Sid, | |
244 | LPTSTR Name, | |
245 | LPDWORD cbName, | |
246 | LPTSTR DomainName, | |
247 | LPDWORD cbDomainName, | |
248 | PSID_NAME_USE peUse) | |
249 | { | |
9785d95b | 250 | static LookupAccountSid_Proc s_pfn_Lookup_Account_Sid = NULL; |
f60ae425 BK |
251 | HMODULE hm_advapi32 = NULL; |
252 | if (is_windows_9x () == TRUE) | |
253 | { | |
254 | return FALSE; | |
255 | } | |
9785d95b BK |
256 | if (g_b_init_lookup_account_sid == 0) |
257 | { | |
258 | g_b_init_lookup_account_sid = 1; | |
259 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
260 | s_pfn_Lookup_Account_Sid = | |
261 | (LookupAccountSid_Proc) GetProcAddress (hm_advapi32, LookupAccountSid_Name); | |
262 | } | |
263 | if (s_pfn_Lookup_Account_Sid == NULL) | |
f60ae425 BK |
264 | { |
265 | return FALSE; | |
266 | } | |
267 | return ( | |
9785d95b | 268 | s_pfn_Lookup_Account_Sid ( |
f60ae425 BK |
269 | lpSystemName, |
270 | Sid, | |
271 | Name, | |
272 | cbName, | |
273 | DomainName, | |
274 | cbDomainName, | |
275 | peUse) | |
276 | ); | |
277 | } | |
278 | ||
279 | PSID_IDENTIFIER_AUTHORITY WINAPI get_sid_identifier_authority ( | |
280 | PSID pSid) | |
281 | { | |
9785d95b | 282 | static GetSidIdentifierAuthority_Proc s_pfn_Get_Sid_Identifier_Authority = NULL; |
f60ae425 BK |
283 | HMODULE hm_advapi32 = NULL; |
284 | if (is_windows_9x () == TRUE) | |
285 | { | |
286 | return NULL; | |
287 | } | |
9785d95b BK |
288 | if (g_b_init_get_sid_identifier_authority == 0) |
289 | { | |
290 | g_b_init_get_sid_identifier_authority = 1; | |
291 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
292 | s_pfn_Get_Sid_Identifier_Authority = | |
293 | (GetSidIdentifierAuthority_Proc) GetProcAddress ( | |
294 | hm_advapi32, "GetSidIdentifierAuthority"); | |
295 | } | |
296 | if (s_pfn_Get_Sid_Identifier_Authority == NULL) | |
f60ae425 BK |
297 | { |
298 | return NULL; | |
299 | } | |
9785d95b | 300 | return (s_pfn_Get_Sid_Identifier_Authority (pSid)); |
f60ae425 BK |
301 | } |
302 | ||
303 | /* | |
304 | END: Wrapper functions around OpenProcessToken | |
305 | and other functions in advapi32.dll that are only | |
306 | supported in Windows NT / 2k / XP | |
307 | */ | |
308 | ||
309 | \f | |
18e070ac AI |
310 | /* Equivalent of strerror for W32 error codes. */ |
311 | char * | |
312 | w32_strerror (int error_no) | |
313 | { | |
314 | static char buf[500]; | |
315 | ||
316 | if (error_no == 0) | |
317 | error_no = GetLastError (); | |
318 | ||
319 | buf[0] = '\0'; | |
320 | if (!FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM, NULL, | |
321 | error_no, | |
322 | 0, /* choose most suitable language */ | |
323 | buf, sizeof (buf), NULL)) | |
324 | sprintf (buf, "w32 error %u", error_no); | |
325 | return buf; | |
326 | } | |
327 | ||
ed91b2ad EZ |
328 | /* Return 1 if P is a valid pointer to an object of size SIZE. Return |
329 | 0 if P is NOT a valid pointer. Return -1 if we cannot validate P. | |
330 | ||
331 | This is called from alloc.c:valid_pointer_p. */ | |
332 | int | |
333 | w32_valid_pointer_p (void *p, int size) | |
334 | { | |
335 | SIZE_T done; | |
336 | HANDLE h = OpenProcess (PROCESS_VM_READ, FALSE, GetCurrentProcessId ()); | |
337 | ||
338 | if (h) | |
339 | { | |
340 | unsigned char *buf = alloca (size); | |
341 | int retval = ReadProcessMemory (h, p, buf, size, &done); | |
342 | ||
343 | CloseHandle (h); | |
344 | return retval; | |
345 | } | |
346 | else | |
347 | return -1; | |
348 | } | |
349 | ||
76b3903d | 350 | static char startup_dir[MAXPATHLEN]; |
00b3b7b3 | 351 | |
95ed0025 | 352 | /* Get the current working directory. */ |
480b0c5b | 353 | char * |
95ed0025 RS |
354 | getwd (char *dir) |
355 | { | |
76b3903d | 356 | #if 0 |
480b0c5b GV |
357 | if (GetCurrentDirectory (MAXPATHLEN, dir) > 0) |
358 | return dir; | |
359 | return NULL; | |
76b3903d GV |
360 | #else |
361 | /* Emacs doesn't actually change directory itself, and we want to | |
362 | force our real wd to be where emacs.exe is to avoid unnecessary | |
363 | conflicts when trying to rename or delete directories. */ | |
364 | strcpy (dir, startup_dir); | |
365 | return dir; | |
366 | #endif | |
95ed0025 RS |
367 | } |
368 | ||
480b0c5b | 369 | #ifndef HAVE_SOCKETS |
95ed0025 RS |
370 | /* Emulate gethostname. */ |
371 | int | |
372 | gethostname (char *buffer, int size) | |
373 | { | |
177c0ea7 | 374 | /* NT only allows small host names, so the buffer is |
95ed0025 RS |
375 | certainly large enough. */ |
376 | return !GetComputerName (buffer, &size); | |
377 | } | |
480b0c5b | 378 | #endif /* HAVE_SOCKETS */ |
95ed0025 RS |
379 | |
380 | /* Emulate getloadavg. */ | |
381 | int | |
382 | getloadavg (double loadavg[], int nelem) | |
383 | { | |
384 | int i; | |
385 | ||
386 | /* A faithful emulation is going to have to be saved for a rainy day. */ | |
177c0ea7 | 387 | for (i = 0; i < nelem; i++) |
95ed0025 RS |
388 | { |
389 | loadavg[i] = 0.0; | |
390 | } | |
391 | return i; | |
392 | } | |
393 | ||
480b0c5b | 394 | /* Emulate getpwuid, getpwnam and others. */ |
95ed0025 | 395 | |
051fe60d GV |
396 | #define PASSWD_FIELD_SIZE 256 |
397 | ||
398 | static char the_passwd_name[PASSWD_FIELD_SIZE]; | |
399 | static char the_passwd_passwd[PASSWD_FIELD_SIZE]; | |
400 | static char the_passwd_gecos[PASSWD_FIELD_SIZE]; | |
401 | static char the_passwd_dir[PASSWD_FIELD_SIZE]; | |
402 | static char the_passwd_shell[PASSWD_FIELD_SIZE]; | |
95ed0025 | 403 | |
177c0ea7 | 404 | static struct passwd the_passwd = |
95ed0025 RS |
405 | { |
406 | the_passwd_name, | |
407 | the_passwd_passwd, | |
408 | 0, | |
409 | 0, | |
410 | 0, | |
411 | the_passwd_gecos, | |
412 | the_passwd_dir, | |
413 | the_passwd_shell, | |
414 | }; | |
415 | ||
3d19b645 LH |
416 | static struct group the_group = |
417 | { | |
418 | /* There are no groups on NT, so we just return "root" as the | |
419 | group name. */ | |
420 | "root", | |
421 | }; | |
422 | ||
177c0ea7 JB |
423 | int |
424 | getuid () | |
425 | { | |
480b0c5b GV |
426 | return the_passwd.pw_uid; |
427 | } | |
428 | ||
177c0ea7 JB |
429 | int |
430 | geteuid () | |
431 | { | |
480b0c5b GV |
432 | /* I could imagine arguing for checking to see whether the user is |
433 | in the Administrators group and returning a UID of 0 for that | |
434 | case, but I don't know how wise that would be in the long run. */ | |
177c0ea7 | 435 | return getuid (); |
480b0c5b GV |
436 | } |
437 | ||
177c0ea7 JB |
438 | int |
439 | getgid () | |
440 | { | |
480b0c5b GV |
441 | return the_passwd.pw_gid; |
442 | } | |
443 | ||
177c0ea7 JB |
444 | int |
445 | getegid () | |
446 | { | |
480b0c5b GV |
447 | return getgid (); |
448 | } | |
449 | ||
95ed0025 RS |
450 | struct passwd * |
451 | getpwuid (int uid) | |
452 | { | |
480b0c5b GV |
453 | if (uid == the_passwd.pw_uid) |
454 | return &the_passwd; | |
455 | return NULL; | |
95ed0025 RS |
456 | } |
457 | ||
3d19b645 LH |
458 | struct group * |
459 | getgrgid (gid_t gid) | |
460 | { | |
461 | return &the_group; | |
462 | } | |
463 | ||
95ed0025 RS |
464 | struct passwd * |
465 | getpwnam (char *name) | |
466 | { | |
467 | struct passwd *pw; | |
177c0ea7 | 468 | |
95ed0025 RS |
469 | pw = getpwuid (getuid ()); |
470 | if (!pw) | |
471 | return pw; | |
472 | ||
480b0c5b | 473 | if (stricmp (name, pw->pw_name)) |
95ed0025 RS |
474 | return NULL; |
475 | ||
476 | return pw; | |
477 | } | |
478 | ||
480b0c5b GV |
479 | void |
480 | init_user_info () | |
95ed0025 | 481 | { |
480b0c5b GV |
482 | /* Find the user's real name by opening the process token and |
483 | looking up the name associated with the user-sid in that token. | |
484 | ||
485 | Use the relative portion of the identifier authority value from | |
486 | the user-sid as the user id value (same for group id using the | |
487 | primary group sid from the process token). */ | |
488 | ||
10aabbf9 JB |
489 | char user_sid[256], name[256], domain[256]; |
490 | DWORD length = sizeof (name), dlength = sizeof (domain), trash; | |
491 | HANDLE token = NULL; | |
492 | SID_NAME_USE user_type; | |
493 | ||
494 | if (open_process_token (GetCurrentProcess (), TOKEN_QUERY, &token) | |
495 | && get_token_information (token, TokenUser, | |
496 | (PVOID) user_sid, sizeof (user_sid), &trash) | |
497 | && lookup_account_sid (NULL, *((PSID *) user_sid), name, &length, | |
498 | domain, &dlength, &user_type)) | |
d1c1c3d2 | 499 | { |
480b0c5b GV |
500 | strcpy (the_passwd.pw_name, name); |
501 | /* Determine a reasonable uid value. */ | |
502 | if (stricmp ("administrator", name) == 0) | |
503 | { | |
504 | the_passwd.pw_uid = 0; | |
505 | the_passwd.pw_gid = 0; | |
506 | } | |
507 | else | |
508 | { | |
509 | SID_IDENTIFIER_AUTHORITY * pSIA; | |
510 | ||
f60ae425 | 511 | pSIA = get_sid_identifier_authority (*((PSID *) user_sid)); |
480b0c5b GV |
512 | /* I believe the relative portion is the last 4 bytes (of 6) |
513 | with msb first. */ | |
514 | the_passwd.pw_uid = ((pSIA->Value[2] << 24) + | |
515 | (pSIA->Value[3] << 16) + | |
516 | (pSIA->Value[4] << 8) + | |
517 | (pSIA->Value[5] << 0)); | |
518 | /* restrict to conventional uid range for normal users */ | |
519 | the_passwd.pw_uid = the_passwd.pw_uid % 60001; | |
520 | ||
521 | /* Get group id */ | |
f60ae425 | 522 | if (get_token_information (token, TokenPrimaryGroup, |
10aabbf9 | 523 | (PVOID) user_sid, sizeof (user_sid), &trash)) |
480b0c5b GV |
524 | { |
525 | SID_IDENTIFIER_AUTHORITY * pSIA; | |
526 | ||
f60ae425 | 527 | pSIA = get_sid_identifier_authority (*((PSID *) user_sid)); |
480b0c5b GV |
528 | the_passwd.pw_gid = ((pSIA->Value[2] << 24) + |
529 | (pSIA->Value[3] << 16) + | |
530 | (pSIA->Value[4] << 8) + | |
531 | (pSIA->Value[5] << 0)); | |
532 | /* I don't know if this is necessary, but for safety... */ | |
533 | the_passwd.pw_gid = the_passwd.pw_gid % 60001; | |
534 | } | |
535 | else | |
536 | the_passwd.pw_gid = the_passwd.pw_uid; | |
537 | } | |
538 | } | |
539 | /* If security calls are not supported (presumably because we | |
10aabbf9 | 540 | are running under Windows 95), fallback to this. */ |
480b0c5b GV |
541 | else if (GetUserName (name, &length)) |
542 | { | |
543 | strcpy (the_passwd.pw_name, name); | |
544 | if (stricmp ("administrator", name) == 0) | |
545 | the_passwd.pw_uid = 0; | |
546 | else | |
547 | the_passwd.pw_uid = 123; | |
548 | the_passwd.pw_gid = the_passwd.pw_uid; | |
549 | } | |
550 | else | |
551 | { | |
552 | strcpy (the_passwd.pw_name, "unknown"); | |
553 | the_passwd.pw_uid = 123; | |
554 | the_passwd.pw_gid = 123; | |
d1c1c3d2 | 555 | } |
95ed0025 | 556 | |
480b0c5b GV |
557 | /* Ensure HOME and SHELL are defined. */ |
558 | if (getenv ("HOME") == NULL) | |
ca149beb | 559 | abort (); |
480b0c5b | 560 | if (getenv ("SHELL") == NULL) |
ca149beb | 561 | abort (); |
95ed0025 | 562 | |
480b0c5b GV |
563 | /* Set dir and shell from environment variables. */ |
564 | strcpy (the_passwd.pw_dir, getenv ("HOME")); | |
565 | strcpy (the_passwd.pw_shell, getenv ("SHELL")); | |
bd4a449f | 566 | |
480b0c5b GV |
567 | if (token) |
568 | CloseHandle (token); | |
95ed0025 RS |
569 | } |
570 | ||
95ed0025 | 571 | int |
480b0c5b | 572 | random () |
95ed0025 | 573 | { |
480b0c5b GV |
574 | /* rand () on NT gives us 15 random bits...hack together 30 bits. */ |
575 | return ((rand () << 15) | rand ()); | |
95ed0025 RS |
576 | } |
577 | ||
95ed0025 | 578 | void |
480b0c5b | 579 | srandom (int seed) |
95ed0025 | 580 | { |
480b0c5b | 581 | srand (seed); |
95ed0025 RS |
582 | } |
583 | ||
76b3903d | 584 | |
cbe39279 RS |
585 | /* Normalize filename by converting all path separators to |
586 | the specified separator. Also conditionally convert upper | |
587 | case path name components to lower case. */ | |
588 | ||
589 | static void | |
590 | normalize_filename (fp, path_sep) | |
591 | register char *fp; | |
592 | char path_sep; | |
593 | { | |
594 | char sep; | |
595 | char *elem; | |
596 | ||
5162ffce MB |
597 | /* Always lower-case drive letters a-z, even if the filesystem |
598 | preserves case in filenames. | |
599 | This is so filenames can be compared by string comparison | |
600 | functions that are case-sensitive. Even case-preserving filesystems | |
601 | do not distinguish case in drive letters. */ | |
602 | if (fp[1] == ':' && *fp >= 'A' && *fp <= 'Z') | |
603 | { | |
604 | *fp += 'a' - 'A'; | |
605 | fp += 2; | |
606 | } | |
607 | ||
fbd6baed | 608 | if (NILP (Vw32_downcase_file_names)) |
cbe39279 RS |
609 | { |
610 | while (*fp) | |
611 | { | |
612 | if (*fp == '/' || *fp == '\\') | |
613 | *fp = path_sep; | |
614 | fp++; | |
615 | } | |
616 | return; | |
617 | } | |
618 | ||
619 | sep = path_sep; /* convert to this path separator */ | |
620 | elem = fp; /* start of current path element */ | |
621 | ||
622 | do { | |
623 | if (*fp >= 'a' && *fp <= 'z') | |
624 | elem = 0; /* don't convert this element */ | |
625 | ||
626 | if (*fp == 0 || *fp == ':') | |
627 | { | |
628 | sep = *fp; /* restore current separator (or 0) */ | |
629 | *fp = '/'; /* after conversion of this element */ | |
630 | } | |
631 | ||
632 | if (*fp == '/' || *fp == '\\') | |
633 | { | |
634 | if (elem && elem != fp) | |
635 | { | |
636 | *fp = 0; /* temporary end of string */ | |
637 | _strlwr (elem); /* while we convert to lower case */ | |
638 | } | |
639 | *fp = sep; /* convert (or restore) path separator */ | |
640 | elem = fp + 1; /* next element starts after separator */ | |
641 | sep = path_sep; | |
642 | } | |
643 | } while (*fp++); | |
644 | } | |
645 | ||
480b0c5b | 646 | /* Destructively turn backslashes into slashes. */ |
95ed0025 | 647 | void |
480b0c5b GV |
648 | dostounix_filename (p) |
649 | register char *p; | |
95ed0025 | 650 | { |
cbe39279 | 651 | normalize_filename (p, '/'); |
95ed0025 RS |
652 | } |
653 | ||
480b0c5b | 654 | /* Destructively turn slashes into backslashes. */ |
95ed0025 | 655 | void |
480b0c5b GV |
656 | unixtodos_filename (p) |
657 | register char *p; | |
95ed0025 | 658 | { |
cbe39279 | 659 | normalize_filename (p, '\\'); |
95ed0025 RS |
660 | } |
661 | ||
480b0c5b GV |
662 | /* Remove all CR's that are followed by a LF. |
663 | (From msdos.c...probably should figure out a way to share it, | |
664 | although this code isn't going to ever change.) */ | |
35f0d482 | 665 | int |
480b0c5b GV |
666 | crlf_to_lf (n, buf) |
667 | register int n; | |
668 | register unsigned char *buf; | |
35f0d482 | 669 | { |
480b0c5b GV |
670 | unsigned char *np = buf; |
671 | unsigned char *startp = buf; | |
672 | unsigned char *endp = buf + n; | |
35f0d482 | 673 | |
480b0c5b GV |
674 | if (n == 0) |
675 | return n; | |
676 | while (buf < endp - 1) | |
95ed0025 | 677 | { |
480b0c5b GV |
678 | if (*buf == 0x0d) |
679 | { | |
680 | if (*(++buf) != 0x0a) | |
681 | *np++ = 0x0d; | |
682 | } | |
683 | else | |
684 | *np++ = *buf++; | |
95ed0025 | 685 | } |
480b0c5b GV |
686 | if (buf < endp) |
687 | *np++ = *buf++; | |
688 | return np - startp; | |
95ed0025 RS |
689 | } |
690 | ||
76b3903d GV |
691 | /* Parse the root part of file name, if present. Return length and |
692 | optionally store pointer to char after root. */ | |
693 | static int | |
694 | parse_root (char * name, char ** pPath) | |
695 | { | |
696 | char * start = name; | |
697 | ||
698 | if (name == NULL) | |
699 | return 0; | |
700 | ||
701 | /* find the root name of the volume if given */ | |
702 | if (isalpha (name[0]) && name[1] == ':') | |
703 | { | |
704 | /* skip past drive specifier */ | |
705 | name += 2; | |
706 | if (IS_DIRECTORY_SEP (name[0])) | |
707 | name++; | |
708 | } | |
709 | else if (IS_DIRECTORY_SEP (name[0]) && IS_DIRECTORY_SEP (name[1])) | |
710 | { | |
711 | int slashes = 2; | |
712 | name += 2; | |
713 | do | |
714 | { | |
715 | if (IS_DIRECTORY_SEP (*name) && --slashes == 0) | |
716 | break; | |
717 | name++; | |
718 | } | |
719 | while ( *name ); | |
720 | if (IS_DIRECTORY_SEP (name[0])) | |
721 | name++; | |
722 | } | |
723 | ||
724 | if (pPath) | |
725 | *pPath = name; | |
726 | ||
727 | return name - start; | |
728 | } | |
729 | ||
730 | /* Get long base name for name; name is assumed to be absolute. */ | |
731 | static int | |
732 | get_long_basename (char * name, char * buf, int size) | |
733 | { | |
734 | WIN32_FIND_DATA find_data; | |
735 | HANDLE dir_handle; | |
736 | int len = 0; | |
737 | ||
9ab8560d | 738 | /* must be valid filename, no wild cards or other invalid characters */ |
22189f79 | 739 | if (_mbspbrk (name, "*?|<>\"")) |
bb1584c8 RS |
740 | return 0; |
741 | ||
76b3903d GV |
742 | dir_handle = FindFirstFile (name, &find_data); |
743 | if (dir_handle != INVALID_HANDLE_VALUE) | |
744 | { | |
745 | if ((len = strlen (find_data.cFileName)) < size) | |
746 | memcpy (buf, find_data.cFileName, len + 1); | |
747 | else | |
748 | len = 0; | |
749 | FindClose (dir_handle); | |
750 | } | |
751 | return len; | |
752 | } | |
753 | ||
754 | /* Get long name for file, if possible (assumed to be absolute). */ | |
755 | BOOL | |
756 | w32_get_long_filename (char * name, char * buf, int size) | |
757 | { | |
758 | char * o = buf; | |
759 | char * p; | |
760 | char * q; | |
761 | char full[ MAX_PATH ]; | |
762 | int len; | |
763 | ||
764 | len = strlen (name); | |
765 | if (len >= MAX_PATH) | |
766 | return FALSE; | |
767 | ||
768 | /* Use local copy for destructive modification. */ | |
769 | memcpy (full, name, len+1); | |
770 | unixtodos_filename (full); | |
771 | ||
772 | /* Copy root part verbatim. */ | |
773 | len = parse_root (full, &p); | |
774 | memcpy (o, full, len); | |
775 | o += len; | |
4f8ac0b2 | 776 | *o = '\0'; |
76b3903d GV |
777 | size -= len; |
778 | ||
4f8ac0b2 | 779 | while (p != NULL && *p) |
76b3903d GV |
780 | { |
781 | q = p; | |
782 | p = strchr (q, '\\'); | |
783 | if (p) *p = '\0'; | |
784 | len = get_long_basename (full, o, size); | |
785 | if (len > 0) | |
786 | { | |
787 | o += len; | |
788 | size -= len; | |
789 | if (p != NULL) | |
790 | { | |
791 | *p++ = '\\'; | |
792 | if (size < 2) | |
793 | return FALSE; | |
794 | *o++ = '\\'; | |
795 | size--; | |
796 | *o = '\0'; | |
797 | } | |
798 | } | |
799 | else | |
800 | return FALSE; | |
801 | } | |
76b3903d GV |
802 | |
803 | return TRUE; | |
804 | } | |
805 | ||
9d3355d1 GV |
806 | int |
807 | is_unc_volume (const char *filename) | |
808 | { | |
809 | const char *ptr = filename; | |
810 | ||
811 | if (!IS_DIRECTORY_SEP (ptr[0]) || !IS_DIRECTORY_SEP (ptr[1]) || !ptr[2]) | |
812 | return 0; | |
813 | ||
22189f79 | 814 | if (_mbspbrk (ptr + 2, "*?|<>\"\\/")) |
9d3355d1 GV |
815 | return 0; |
816 | ||
817 | return 1; | |
818 | } | |
76b3903d | 819 | |
95ed0025 RS |
820 | /* Routines that are no-ops on NT but are defined to get Emacs to compile. */ |
821 | ||
177c0ea7 JB |
822 | int |
823 | sigsetmask (int signal_mask) | |
824 | { | |
95ed0025 RS |
825 | return 0; |
826 | } | |
827 | ||
177c0ea7 JB |
828 | int |
829 | sigmask (int sig) | |
830 | { | |
8f900f6e AI |
831 | return 0; |
832 | } | |
833 | ||
177c0ea7 JB |
834 | int |
835 | sigblock (int sig) | |
836 | { | |
95ed0025 RS |
837 | return 0; |
838 | } | |
839 | ||
177c0ea7 JB |
840 | int |
841 | sigunblock (int sig) | |
842 | { | |
8f900f6e AI |
843 | return 0; |
844 | } | |
845 | ||
177c0ea7 JB |
846 | int |
847 | setpgrp (int pid, int gid) | |
848 | { | |
95ed0025 RS |
849 | return 0; |
850 | } | |
851 | ||
177c0ea7 JB |
852 | int |
853 | alarm (int seconds) | |
854 | { | |
95ed0025 RS |
855 | return 0; |
856 | } | |
857 | ||
177c0ea7 JB |
858 | void |
859 | unrequest_sigio (void) | |
860 | { | |
c6624584 | 861 | return; |
95ed0025 RS |
862 | } |
863 | ||
c6624584 | 864 | void |
177c0ea7 JB |
865 | request_sigio (void) |
866 | { | |
c6624584 | 867 | return; |
95ed0025 RS |
868 | } |
869 | ||
480b0c5b | 870 | #define REG_ROOT "SOFTWARE\\GNU\\Emacs" |
f332b293 | 871 | |
177c0ea7 | 872 | LPBYTE |
fbd6baed | 873 | w32_get_resource (key, lpdwtype) |
f332b293 GV |
874 | char *key; |
875 | LPDWORD lpdwtype; | |
876 | { | |
877 | LPBYTE lpvalue; | |
878 | HKEY hrootkey = NULL; | |
879 | DWORD cbData; | |
880 | BOOL ok = FALSE; | |
177c0ea7 JB |
881 | |
882 | /* Check both the current user and the local machine to see if | |
f332b293 | 883 | we have any resources. */ |
177c0ea7 | 884 | |
f332b293 GV |
885 | if (RegOpenKeyEx (HKEY_CURRENT_USER, REG_ROOT, 0, KEY_READ, &hrootkey) == ERROR_SUCCESS) |
886 | { | |
887 | lpvalue = NULL; | |
888 | ||
177c0ea7 JB |
889 | if (RegQueryValueEx (hrootkey, key, NULL, NULL, NULL, &cbData) == ERROR_SUCCESS |
890 | && (lpvalue = (LPBYTE) xmalloc (cbData)) != NULL | |
f332b293 GV |
891 | && RegQueryValueEx (hrootkey, key, NULL, lpdwtype, lpvalue, &cbData) == ERROR_SUCCESS) |
892 | { | |
893 | return (lpvalue); | |
894 | } | |
895 | ||
896 | if (lpvalue) xfree (lpvalue); | |
177c0ea7 | 897 | |
f332b293 | 898 | RegCloseKey (hrootkey); |
177c0ea7 JB |
899 | } |
900 | ||
f332b293 GV |
901 | if (RegOpenKeyEx (HKEY_LOCAL_MACHINE, REG_ROOT, 0, KEY_READ, &hrootkey) == ERROR_SUCCESS) |
902 | { | |
903 | lpvalue = NULL; | |
177c0ea7 | 904 | |
76b3903d GV |
905 | if (RegQueryValueEx (hrootkey, key, NULL, NULL, NULL, &cbData) == ERROR_SUCCESS |
906 | && (lpvalue = (LPBYTE) xmalloc (cbData)) != NULL | |
907 | && RegQueryValueEx (hrootkey, key, NULL, lpdwtype, lpvalue, &cbData) == ERROR_SUCCESS) | |
f332b293 GV |
908 | { |
909 | return (lpvalue); | |
910 | } | |
177c0ea7 | 911 | |
f332b293 | 912 | if (lpvalue) xfree (lpvalue); |
177c0ea7 | 913 | |
f332b293 | 914 | RegCloseKey (hrootkey); |
177c0ea7 JB |
915 | } |
916 | ||
f332b293 GV |
917 | return (NULL); |
918 | } | |
919 | ||
75b08edb GV |
920 | char *get_emacs_configuration (void); |
921 | extern Lisp_Object Vsystem_configuration; | |
922 | ||
f332b293 | 923 | void |
aa7b87b0 | 924 | init_environment (char ** argv) |
f332b293 | 925 | { |
b3308d2e KH |
926 | static const char * const tempdirs[] = { |
927 | "$TMPDIR", "$TEMP", "$TMP", "c:/" | |
928 | }; | |
2d5324c5 | 929 | |
b3308d2e | 930 | int i; |
2d5324c5 | 931 | |
b3308d2e KH |
932 | const int imax = sizeof (tempdirs) / sizeof (tempdirs[0]); |
933 | ||
934 | /* Make sure they have a usable $TMPDIR. Many Emacs functions use | |
935 | temporary files and assume "/tmp" if $TMPDIR is unset, which | |
936 | will break on DOS/Windows. Refuse to work if we cannot find | |
937 | a directory, not even "c:/", usable for that purpose. */ | |
938 | for (i = 0; i < imax ; i++) | |
939 | { | |
940 | const char *tmp = tempdirs[i]; | |
941 | ||
942 | if (*tmp == '$') | |
943 | tmp = getenv (tmp + 1); | |
944 | /* Note that `access' can lie to us if the directory resides on a | |
945 | read-only filesystem, like CD-ROM or a write-protected floppy. | |
946 | The only way to be really sure is to actually create a file and | |
947 | see if it succeeds. But I think that's too much to ask. */ | |
a302c7ae | 948 | if (tmp && _access (tmp, D_OK) == 0) |
b3308d2e KH |
949 | { |
950 | char * var = alloca (strlen (tmp) + 8); | |
951 | sprintf (var, "TMPDIR=%s", tmp); | |
aca583b2 | 952 | _putenv (strdup (var)); |
b3308d2e KH |
953 | break; |
954 | } | |
955 | } | |
956 | if (i >= imax) | |
957 | cmd_error_internal | |
958 | (Fcons (Qerror, | |
959 | Fcons (build_string ("no usable temporary directories found!!"), | |
960 | Qnil)), | |
961 | "While setting TMPDIR: "); | |
962 | ||
ca149beb AI |
963 | /* Check for environment variables and use registry settings if they |
964 | don't exist. Fallback on default values where applicable. */ | |
f332b293 | 965 | { |
480b0c5b GV |
966 | int i; |
967 | LPBYTE lpval; | |
968 | DWORD dwType; | |
69fb0241 | 969 | char locale_name[32]; |
2d5324c5 JR |
970 | struct stat ignored; |
971 | char default_home[MAX_PATH]; | |
f332b293 | 972 | |
e00b99c8 | 973 | static const struct env_entry |
ca149beb AI |
974 | { |
975 | char * name; | |
976 | char * def_value; | |
e00b99c8 | 977 | } dflt_envvars[] = |
ca149beb AI |
978 | { |
979 | {"HOME", "C:/"}, | |
980 | {"PRELOAD_WINSOCK", NULL}, | |
981 | {"emacs_dir", "C:/emacs"}, | |
cc14250a | 982 | {"EMACSLOADPATH", "%emacs_dir%/site-lisp;%emacs_dir%/../site-lisp;%emacs_dir%/lisp;%emacs_dir%/leim"}, |
ca149beb AI |
983 | {"SHELL", "%emacs_dir%/bin/cmdproxy.exe"}, |
984 | {"EMACSDATA", "%emacs_dir%/etc"}, | |
985 | {"EMACSPATH", "%emacs_dir%/bin"}, | |
76b3903d | 986 | /* We no longer set INFOPATH because Info-default-directory-list |
ca149beb AI |
987 | is then ignored. */ |
988 | /* {"INFOPATH", "%emacs_dir%/info"}, */ | |
989 | {"EMACSDOC", "%emacs_dir%/etc"}, | |
69fb0241 JR |
990 | {"TERM", "cmd"}, |
991 | {"LANG", NULL}, | |
480b0c5b GV |
992 | }; |
993 | ||
e00b99c8 EZ |
994 | #define N_ENV_VARS sizeof(dflt_envvars)/sizeof(dflt_envvars[0]) |
995 | ||
996 | /* We need to copy dflt_envvars[] and work on the copy because we | |
997 | don't want the dumped Emacs to inherit the values of | |
998 | environment variables we saw during dumping (which could be on | |
999 | a different system). The defaults above must be left intact. */ | |
1000 | struct env_entry env_vars[N_ENV_VARS]; | |
1001 | ||
1002 | for (i = 0; i < N_ENV_VARS; i++) | |
1003 | env_vars[i] = dflt_envvars[i]; | |
1004 | ||
2d5324c5 JR |
1005 | /* For backwards compatibility, check if a .emacs file exists in C:/ |
1006 | If not, then we can try to default to the appdata directory under the | |
1007 | user's profile, which is more likely to be writable. */ | |
1008 | if (stat ("C:/.emacs", &ignored) < 0) | |
1009 | { | |
1010 | HRESULT profile_result; | |
1011 | /* Dynamically load ShGetFolderPath, as it won't exist on versions | |
1012 | of Windows 95 and NT4 that have not been updated to include | |
1013 | MSIE 5. Also we don't link with shell32.dll by default. */ | |
1014 | HMODULE shell32_dll; | |
1015 | ShGetFolderPath_fn get_folder_path; | |
1016 | shell32_dll = GetModuleHandle ("shell32.dll"); | |
1017 | get_folder_path = (ShGetFolderPath_fn) | |
1018 | GetProcAddress (shell32_dll, "SHGetFolderPathA"); | |
1019 | ||
1020 | if (get_folder_path != NULL) | |
1021 | { | |
1022 | profile_result = get_folder_path (NULL, CSIDL_APPDATA, NULL, | |
1023 | 0, default_home); | |
1024 | ||
1025 | /* If we can't get the appdata dir, revert to old behaviour. */ | |
1026 | if (profile_result == S_OK) | |
1027 | env_vars[0].def_value = default_home; | |
1028 | } | |
1029 | ||
1030 | /* Unload shell32.dll, it is not needed anymore. */ | |
1031 | FreeLibrary (shell32_dll); | |
1032 | } | |
1033 | ||
69fb0241 JR |
1034 | /* Get default locale info and use it for LANG. */ |
1035 | if (GetLocaleInfo (LOCALE_USER_DEFAULT, | |
1036 | LOCALE_SABBREVLANGNAME | LOCALE_USE_CP_ACP, | |
1037 | locale_name, sizeof (locale_name))) | |
1038 | { | |
e00b99c8 | 1039 | for (i = 0; i < N_ENV_VARS; i++) |
69fb0241 JR |
1040 | { |
1041 | if (strcmp (env_vars[i].name, "LANG") == 0) | |
1042 | { | |
1043 | env_vars[i].def_value = locale_name; | |
1044 | break; | |
1045 | } | |
1046 | } | |
1047 | } | |
1048 | ||
ca149beb AI |
1049 | #define SET_ENV_BUF_SIZE (4 * MAX_PATH) /* to cover EMACSLOADPATH */ |
1050 | ||
1051 | /* Treat emacs_dir specially: set it unconditionally based on our | |
1052 | location, if it appears that we are running from the bin subdir | |
1053 | of a standard installation. */ | |
1054 | { | |
1055 | char *p; | |
1056 | char modname[MAX_PATH]; | |
1057 | ||
1058 | if (!GetModuleFileName (NULL, modname, MAX_PATH)) | |
1059 | abort (); | |
1060 | if ((p = strrchr (modname, '\\')) == NULL) | |
1061 | abort (); | |
1062 | *p = 0; | |
1063 | ||
1064 | if ((p = strrchr (modname, '\\')) && stricmp (p, "\\bin") == 0) | |
1065 | { | |
1066 | char buf[SET_ENV_BUF_SIZE]; | |
1067 | ||
1068 | *p = 0; | |
1069 | for (p = modname; *p; p++) | |
1070 | if (*p == '\\') *p = '/'; | |
177c0ea7 | 1071 | |
ca149beb | 1072 | _snprintf (buf, sizeof(buf)-1, "emacs_dir=%s", modname); |
a302c7ae | 1073 | _putenv (strdup (buf)); |
ca149beb | 1074 | } |
950090be JR |
1075 | /* Handle running emacs from the build directory: src/oo-spd/i386/ */ |
1076 | ||
1077 | /* FIXME: should use substring of get_emacs_configuration (). | |
1078 | But I don't think the Windows build supports alpha, mips etc | |
1079 | anymore, so have taken the easy option for now. */ | |
1080 | else if (p && stricmp (p, "\\i386") == 0) | |
1081 | { | |
1082 | *p = 0; | |
1083 | p = strrchr (modname, '\\'); | |
1084 | if (p != NULL) | |
1085 | { | |
1086 | *p = 0; | |
1087 | p = strrchr (modname, '\\'); | |
1088 | if (p && stricmp (p, "\\src") == 0) | |
1089 | { | |
1090 | char buf[SET_ENV_BUF_SIZE]; | |
1091 | ||
1092 | *p = 0; | |
1093 | for (p = modname; *p; p++) | |
1094 | if (*p == '\\') *p = '/'; | |
1095 | ||
1096 | _snprintf (buf, sizeof(buf)-1, "emacs_dir=%s", modname); | |
1097 | _putenv (strdup (buf)); | |
1098 | } | |
1099 | } | |
1100 | } | |
ca149beb AI |
1101 | } |
1102 | ||
e00b99c8 | 1103 | for (i = 0; i < N_ENV_VARS; i++) |
f332b293 | 1104 | { |
ca149beb | 1105 | if (!getenv (env_vars[i].name)) |
480b0c5b | 1106 | { |
ca149beb | 1107 | int dont_free = 0; |
480b0c5b | 1108 | |
ca149beb AI |
1109 | if ((lpval = w32_get_resource (env_vars[i].name, &dwType)) == NULL) |
1110 | { | |
1111 | lpval = env_vars[i].def_value; | |
1112 | dwType = REG_EXPAND_SZ; | |
1113 | dont_free = 1; | |
480b0c5b | 1114 | } |
ca149beb AI |
1115 | |
1116 | if (lpval) | |
480b0c5b | 1117 | { |
892eb237 | 1118 | char buf1[SET_ENV_BUF_SIZE], buf2[SET_ENV_BUF_SIZE]; |
ca149beb | 1119 | |
892eb237 EZ |
1120 | if (dwType == REG_EXPAND_SZ) |
1121 | ExpandEnvironmentStrings ((LPSTR) lpval, buf1, sizeof(buf1)); | |
ca149beb | 1122 | else if (dwType == REG_SZ) |
892eb237 EZ |
1123 | strcpy (buf1, lpval); |
1124 | if (dwType == REG_EXPAND_SZ || dwType == REG_SZ) | |
ca149beb | 1125 | { |
892eb237 EZ |
1126 | _snprintf (buf2, sizeof(buf2)-1, "%s=%s", env_vars[i].name, |
1127 | buf1); | |
1128 | _putenv (strdup (buf2)); | |
ca149beb | 1129 | } |
f332b293 | 1130 | |
ca149beb AI |
1131 | if (!dont_free) |
1132 | xfree (lpval); | |
1133 | } | |
480b0c5b GV |
1134 | } |
1135 | } | |
1136 | } | |
1137 | ||
75b08edb GV |
1138 | /* Rebuild system configuration to reflect invoking system. */ |
1139 | Vsystem_configuration = build_string (EMACS_CONFIGURATION); | |
1140 | ||
76b3903d GV |
1141 | /* Another special case: on NT, the PATH variable is actually named |
1142 | "Path" although cmd.exe (perhaps NT itself) arranges for | |
1143 | environment variable lookup and setting to be case insensitive. | |
1144 | However, Emacs assumes a fully case sensitive environment, so we | |
1145 | need to change "Path" to "PATH" to match the expectations of | |
1146 | various elisp packages. We do this by the sneaky method of | |
1147 | modifying the string in the C runtime environ entry. | |
1148 | ||
1149 | The same applies to COMSPEC. */ | |
1150 | { | |
1151 | char ** envp; | |
1152 | ||
1153 | for (envp = environ; *envp; envp++) | |
1154 | if (_strnicmp (*envp, "PATH=", 5) == 0) | |
1155 | memcpy (*envp, "PATH=", 5); | |
1156 | else if (_strnicmp (*envp, "COMSPEC=", 8) == 0) | |
1157 | memcpy (*envp, "COMSPEC=", 8); | |
1158 | } | |
1159 | ||
1160 | /* Remember the initial working directory for getwd, then make the | |
1161 | real wd be the location of emacs.exe to avoid conflicts when | |
1162 | renaming or deleting directories. (We also don't call chdir when | |
1163 | running subprocesses for the same reason.) */ | |
1164 | if (!GetCurrentDirectory (MAXPATHLEN, startup_dir)) | |
1165 | abort (); | |
1166 | ||
1167 | { | |
1168 | char *p; | |
aa7b87b0 | 1169 | static char modname[MAX_PATH]; |
76b3903d GV |
1170 | |
1171 | if (!GetModuleFileName (NULL, modname, MAX_PATH)) | |
1172 | abort (); | |
1173 | if ((p = strrchr (modname, '\\')) == NULL) | |
1174 | abort (); | |
1175 | *p = 0; | |
1176 | ||
1177 | SetCurrentDirectory (modname); | |
aa7b87b0 AI |
1178 | |
1179 | /* Ensure argv[0] has the full path to Emacs. */ | |
1180 | *p = '\\'; | |
1181 | argv[0] = modname; | |
76b3903d GV |
1182 | } |
1183 | ||
20af4831 JR |
1184 | /* Determine if there is a middle mouse button, to allow parse_button |
1185 | to decide whether right mouse events should be mouse-2 or | |
1186 | mouse-3. */ | |
e0c181dd | 1187 | w32_num_mouse_buttons = GetSystemMetrics (SM_CMOUSEBUTTONS); |
20af4831 | 1188 | |
480b0c5b GV |
1189 | init_user_info (); |
1190 | } | |
1191 | ||
bf794306 EZ |
1192 | char * |
1193 | emacs_root_dir (void) | |
1194 | { | |
1195 | static char root_dir[FILENAME_MAX]; | |
1196 | const char *p; | |
1197 | ||
1198 | p = getenv ("emacs_dir"); | |
1199 | if (p == NULL) | |
1200 | abort (); | |
1201 | strcpy (root_dir, p); | |
1202 | root_dir[parse_root (root_dir, NULL)] = '\0'; | |
1203 | dostounix_filename (root_dir); | |
1204 | return root_dir; | |
1205 | } | |
1206 | ||
480b0c5b GV |
1207 | /* We don't have scripts to automatically determine the system configuration |
1208 | for Emacs before it's compiled, and we don't want to have to make the | |
1209 | user enter it, so we define EMACS_CONFIGURATION to invoke this runtime | |
1210 | routine. */ | |
1211 | ||
480b0c5b GV |
1212 | char * |
1213 | get_emacs_configuration (void) | |
1214 | { | |
1215 | char *arch, *oem, *os; | |
c5247da2 | 1216 | int build_num; |
a302c7ae | 1217 | static char configuration_buffer[32]; |
480b0c5b GV |
1218 | |
1219 | /* Determine the processor type. */ | |
177c0ea7 | 1220 | switch (get_processor_type ()) |
480b0c5b GV |
1221 | { |
1222 | ||
1223 | #ifdef PROCESSOR_INTEL_386 | |
1224 | case PROCESSOR_INTEL_386: | |
1225 | case PROCESSOR_INTEL_486: | |
1226 | case PROCESSOR_INTEL_PENTIUM: | |
1227 | arch = "i386"; | |
1228 | break; | |
1229 | #endif | |
1230 | ||
1231 | #ifdef PROCESSOR_INTEL_860 | |
1232 | case PROCESSOR_INTEL_860: | |
1233 | arch = "i860"; | |
1234 | break; | |
1235 | #endif | |
1236 | ||
1237 | #ifdef PROCESSOR_MIPS_R2000 | |
1238 | case PROCESSOR_MIPS_R2000: | |
1239 | case PROCESSOR_MIPS_R3000: | |
1240 | case PROCESSOR_MIPS_R4000: | |
1241 | arch = "mips"; | |
1242 | break; | |
1243 | #endif | |
1244 | ||
1245 | #ifdef PROCESSOR_ALPHA_21064 | |
1246 | case PROCESSOR_ALPHA_21064: | |
1247 | arch = "alpha"; | |
1248 | break; | |
1249 | #endif | |
1250 | ||
1251 | default: | |
1252 | arch = "unknown"; | |
1253 | break; | |
f332b293 | 1254 | } |
480b0c5b | 1255 | |
a302c7ae AI |
1256 | /* Use the OEM field to reflect the compiler/library combination. */ |
1257 | #ifdef _MSC_VER | |
1258 | #define COMPILER_NAME "msvc" | |
1259 | #else | |
1260 | #ifdef __GNUC__ | |
1261 | #define COMPILER_NAME "mingw" | |
1262 | #else | |
1263 | #define COMPILER_NAME "unknown" | |
1264 | #endif | |
1265 | #endif | |
1266 | oem = COMPILER_NAME; | |
480b0c5b | 1267 | |
c5247da2 GV |
1268 | switch (osinfo_cache.dwPlatformId) { |
1269 | case VER_PLATFORM_WIN32_NT: | |
1270 | os = "nt"; | |
1271 | build_num = osinfo_cache.dwBuildNumber; | |
1272 | break; | |
1273 | case VER_PLATFORM_WIN32_WINDOWS: | |
1274 | if (osinfo_cache.dwMinorVersion == 0) { | |
1275 | os = "windows95"; | |
1276 | } else { | |
1277 | os = "windows98"; | |
1278 | } | |
1279 | build_num = LOWORD (osinfo_cache.dwBuildNumber); | |
1280 | break; | |
1281 | case VER_PLATFORM_WIN32s: | |
1282 | /* Not supported, should not happen. */ | |
1283 | os = "windows32s"; | |
1284 | build_num = LOWORD (osinfo_cache.dwBuildNumber); | |
1285 | break; | |
1286 | default: | |
1287 | os = "unknown"; | |
1288 | build_num = 0; | |
1289 | break; | |
1290 | } | |
1291 | ||
1292 | if (osinfo_cache.dwPlatformId == VER_PLATFORM_WIN32_NT) { | |
1293 | sprintf (configuration_buffer, "%s-%s-%s%d.%d.%d", arch, oem, os, | |
1294 | get_w32_major_version (), get_w32_minor_version (), build_num); | |
1295 | } else { | |
1296 | sprintf (configuration_buffer, "%s-%s-%s.%d", arch, oem, os, build_num); | |
1297 | } | |
480b0c5b | 1298 | |
480b0c5b | 1299 | return configuration_buffer; |
f332b293 GV |
1300 | } |
1301 | ||
a302c7ae AI |
1302 | char * |
1303 | get_emacs_configuration_options (void) | |
1304 | { | |
1305 | static char options_buffer[256]; | |
1306 | ||
1307 | /* Work out the effective configure options for this build. */ | |
1308 | #ifdef _MSC_VER | |
1309 | #define COMPILER_VERSION "--with-msvc (%d.%02d)", _MSC_VER / 100, _MSC_VER % 100 | |
1310 | #else | |
1311 | #ifdef __GNUC__ | |
1312 | #define COMPILER_VERSION "--with-gcc (%d.%d)", __GNUC__, __GNUC_MINOR__ | |
1313 | #else | |
1314 | #define COMPILER_VERSION "" | |
1315 | #endif | |
1316 | #endif | |
1317 | ||
1318 | sprintf (options_buffer, COMPILER_VERSION); | |
1319 | #ifdef EMACSDEBUG | |
1320 | strcat (options_buffer, " --no-opt"); | |
1321 | #endif | |
1322 | #ifdef USER_CFLAGS | |
1323 | strcat (options_buffer, " --cflags"); | |
1324 | strcat (options_buffer, USER_CFLAGS); | |
1325 | #endif | |
1326 | #ifdef USER_LDFLAGS | |
1327 | strcat (options_buffer, " --ldflags"); | |
1328 | strcat (options_buffer, USER_LDFLAGS); | |
1329 | #endif | |
1330 | return options_buffer; | |
1331 | } | |
1332 | ||
1333 | ||
35f0d482 KH |
1334 | #include <sys/timeb.h> |
1335 | ||
1336 | /* Emulate gettimeofday (Ulrich Leodolter, 1/11/95). */ | |
177c0ea7 | 1337 | void |
35f0d482 KH |
1338 | gettimeofday (struct timeval *tv, struct timezone *tz) |
1339 | { | |
6e602566 | 1340 | struct _timeb tb; |
35f0d482 KH |
1341 | _ftime (&tb); |
1342 | ||
1343 | tv->tv_sec = tb.time; | |
1344 | tv->tv_usec = tb.millitm * 1000L; | |
177c0ea7 | 1345 | if (tz) |
35f0d482 KH |
1346 | { |
1347 | tz->tz_minuteswest = tb.timezone; /* minutes west of Greenwich */ | |
1348 | tz->tz_dsttime = tb.dstflag; /* type of dst correction */ | |
1349 | } | |
1350 | } | |
35f0d482 | 1351 | |
480b0c5b | 1352 | /* ------------------------------------------------------------------------- */ |
fbd6baed | 1353 | /* IO support and wrapper functions for W32 API. */ |
480b0c5b | 1354 | /* ------------------------------------------------------------------------- */ |
95ed0025 | 1355 | |
480b0c5b | 1356 | /* Place a wrapper around the MSVC version of ctime. It returns NULL |
177c0ea7 | 1357 | on network directories, so we handle that case here. |
480b0c5b GV |
1358 | (Ulrich Leodolter, 1/11/95). */ |
1359 | char * | |
1360 | sys_ctime (const time_t *t) | |
1361 | { | |
1362 | char *str = (char *) ctime (t); | |
1363 | return (str ? str : "Sun Jan 01 00:00:00 1970"); | |
1364 | } | |
1365 | ||
1366 | /* Emulate sleep...we could have done this with a define, but that | |
1367 | would necessitate including windows.h in the files that used it. | |
1368 | This is much easier. */ | |
1369 | void | |
1370 | sys_sleep (int seconds) | |
1371 | { | |
1372 | Sleep (seconds * 1000); | |
1373 | } | |
1374 | ||
76b3903d | 1375 | /* Internal MSVC functions for low-level descriptor munging */ |
480b0c5b GV |
1376 | extern int __cdecl _set_osfhnd (int fd, long h); |
1377 | extern int __cdecl _free_osfhnd (int fd); | |
1378 | ||
1379 | /* parallel array of private info on file handles */ | |
1380 | filedesc fd_info [ MAXDESC ]; | |
1381 | ||
76b3903d GV |
1382 | typedef struct volume_info_data { |
1383 | struct volume_info_data * next; | |
1384 | ||
1385 | /* time when info was obtained */ | |
1386 | DWORD timestamp; | |
1387 | ||
1388 | /* actual volume info */ | |
1389 | char * root_dir; | |
480b0c5b GV |
1390 | DWORD serialnum; |
1391 | DWORD maxcomp; | |
1392 | DWORD flags; | |
76b3903d GV |
1393 | char * name; |
1394 | char * type; | |
1395 | } volume_info_data; | |
1396 | ||
1397 | /* Global referenced by various functions. */ | |
1398 | static volume_info_data volume_info; | |
1399 | ||
1400 | /* Vector to indicate which drives are local and fixed (for which cached | |
1401 | data never expires). */ | |
1402 | static BOOL fixed_drives[26]; | |
1403 | ||
1404 | /* Consider cached volume information to be stale if older than 10s, | |
1405 | at least for non-local drives. Info for fixed drives is never stale. */ | |
1406 | #define DRIVE_INDEX( c ) ( (c) <= 'Z' ? (c) - 'A' : (c) - 'a' ) | |
1407 | #define VOLINFO_STILL_VALID( root_dir, info ) \ | |
1408 | ( ( isalpha (root_dir[0]) && \ | |
1409 | fixed_drives[ DRIVE_INDEX (root_dir[0]) ] ) \ | |
1410 | || GetTickCount () - info->timestamp < 10000 ) | |
1411 | ||
1412 | /* Cache support functions. */ | |
1413 | ||
1414 | /* Simple linked list with linear search is sufficient. */ | |
1415 | static volume_info_data *volume_cache = NULL; | |
1416 | ||
1417 | static volume_info_data * | |
1418 | lookup_volume_info (char * root_dir) | |
1419 | { | |
1420 | volume_info_data * info; | |
1421 | ||
1422 | for (info = volume_cache; info; info = info->next) | |
1423 | if (stricmp (info->root_dir, root_dir) == 0) | |
1424 | break; | |
1425 | return info; | |
1426 | } | |
1427 | ||
1428 | static void | |
1429 | add_volume_info (char * root_dir, volume_info_data * info) | |
1430 | { | |
a302c7ae | 1431 | info->root_dir = xstrdup (root_dir); |
76b3903d GV |
1432 | info->next = volume_cache; |
1433 | volume_cache = info; | |
1434 | } | |
1435 | ||
1436 | ||
1437 | /* Wrapper for GetVolumeInformation, which uses caching to avoid | |
1438 | performance penalty (~2ms on 486 for local drives, 7.5ms for local | |
1439 | cdrom drive, ~5-10ms or more for remote drives on LAN). */ | |
1440 | volume_info_data * | |
1441 | GetCachedVolumeInformation (char * root_dir) | |
1442 | { | |
1443 | volume_info_data * info; | |
1444 | char default_root[ MAX_PATH ]; | |
1445 | ||
1446 | /* NULL for root_dir means use root from current directory. */ | |
1447 | if (root_dir == NULL) | |
1448 | { | |
1449 | if (GetCurrentDirectory (MAX_PATH, default_root) == 0) | |
1450 | return NULL; | |
1451 | parse_root (default_root, &root_dir); | |
1452 | *root_dir = 0; | |
1453 | root_dir = default_root; | |
1454 | } | |
1455 | ||
1456 | /* Local fixed drives can be cached permanently. Removable drives | |
1457 | cannot be cached permanently, since the volume name and serial | |
1458 | number (if nothing else) can change. Remote drives should be | |
1459 | treated as if they are removable, since there is no sure way to | |
1460 | tell whether they are or not. Also, the UNC association of drive | |
1461 | letters mapped to remote volumes can be changed at any time (even | |
1462 | by other processes) without notice. | |
177c0ea7 | 1463 | |
76b3903d GV |
1464 | As a compromise, so we can benefit from caching info for remote |
1465 | volumes, we use a simple expiry mechanism to invalidate cache | |
1466 | entries that are more than ten seconds old. */ | |
1467 | ||
1468 | #if 0 | |
1469 | /* No point doing this, because WNetGetConnection is even slower than | |
1470 | GetVolumeInformation, consistently taking ~50ms on a 486 (FWIW, | |
1471 | GetDriveType is about the only call of this type which does not | |
1472 | involve network access, and so is extremely quick). */ | |
1473 | ||
1474 | /* Map drive letter to UNC if remote. */ | |
1475 | if ( isalpha( root_dir[0] ) && !fixed[ DRIVE_INDEX( root_dir[0] ) ] ) | |
1476 | { | |
1477 | char remote_name[ 256 ]; | |
1478 | char drive[3] = { root_dir[0], ':' }; | |
1479 | ||
1480 | if (WNetGetConnection (drive, remote_name, sizeof (remote_name)) | |
1481 | == NO_ERROR) | |
1482 | /* do something */ ; | |
1483 | } | |
1484 | #endif | |
1485 | ||
1486 | info = lookup_volume_info (root_dir); | |
1487 | ||
1488 | if (info == NULL || ! VOLINFO_STILL_VALID (root_dir, info)) | |
1489 | { | |
1490 | char name[ 256 ]; | |
1491 | DWORD serialnum; | |
1492 | DWORD maxcomp; | |
1493 | DWORD flags; | |
1494 | char type[ 256 ]; | |
1495 | ||
1496 | /* Info is not cached, or is stale. */ | |
1497 | if (!GetVolumeInformation (root_dir, | |
1498 | name, sizeof (name), | |
1499 | &serialnum, | |
1500 | &maxcomp, | |
1501 | &flags, | |
1502 | type, sizeof (type))) | |
1503 | return NULL; | |
1504 | ||
1505 | /* Cache the volume information for future use, overwriting existing | |
1506 | entry if present. */ | |
1507 | if (info == NULL) | |
1508 | { | |
1509 | info = (volume_info_data *) xmalloc (sizeof (volume_info_data)); | |
1510 | add_volume_info (root_dir, info); | |
1511 | } | |
1512 | else | |
1513 | { | |
a302c7ae AI |
1514 | xfree (info->name); |
1515 | xfree (info->type); | |
76b3903d GV |
1516 | } |
1517 | ||
a302c7ae | 1518 | info->name = xstrdup (name); |
76b3903d GV |
1519 | info->serialnum = serialnum; |
1520 | info->maxcomp = maxcomp; | |
1521 | info->flags = flags; | |
a302c7ae | 1522 | info->type = xstrdup (type); |
76b3903d GV |
1523 | info->timestamp = GetTickCount (); |
1524 | } | |
1525 | ||
1526 | return info; | |
1527 | } | |
480b0c5b GV |
1528 | |
1529 | /* Get information on the volume where name is held; set path pointer to | |
1530 | start of pathname in name (past UNC header\volume header if present). */ | |
1531 | int | |
1532 | get_volume_info (const char * name, const char ** pPath) | |
95ed0025 | 1533 | { |
480b0c5b GV |
1534 | char temp[MAX_PATH]; |
1535 | char *rootname = NULL; /* default to current volume */ | |
76b3903d | 1536 | volume_info_data * info; |
480b0c5b GV |
1537 | |
1538 | if (name == NULL) | |
1539 | return FALSE; | |
1540 | ||
1541 | /* find the root name of the volume if given */ | |
1542 | if (isalpha (name[0]) && name[1] == ':') | |
1543 | { | |
1544 | rootname = temp; | |
1545 | temp[0] = *name++; | |
1546 | temp[1] = *name++; | |
1547 | temp[2] = '\\'; | |
1548 | temp[3] = 0; | |
1549 | } | |
1550 | else if (IS_DIRECTORY_SEP (name[0]) && IS_DIRECTORY_SEP (name[1])) | |
95ed0025 | 1551 | { |
480b0c5b GV |
1552 | char *str = temp; |
1553 | int slashes = 4; | |
1554 | rootname = temp; | |
1555 | do | |
1556 | { | |
1557 | if (IS_DIRECTORY_SEP (*name) && --slashes == 0) | |
1558 | break; | |
1559 | *str++ = *name++; | |
1560 | } | |
1561 | while ( *name ); | |
1562 | ||
480b0c5b GV |
1563 | *str++ = '\\'; |
1564 | *str = 0; | |
95ed0025 | 1565 | } |
480b0c5b GV |
1566 | |
1567 | if (pPath) | |
1568 | *pPath = name; | |
177c0ea7 | 1569 | |
76b3903d GV |
1570 | info = GetCachedVolumeInformation (rootname); |
1571 | if (info != NULL) | |
95ed0025 | 1572 | { |
76b3903d GV |
1573 | /* Set global referenced by other functions. */ |
1574 | volume_info = *info; | |
480b0c5b | 1575 | return TRUE; |
95ed0025 | 1576 | } |
480b0c5b GV |
1577 | return FALSE; |
1578 | } | |
1579 | ||
1580 | /* Determine if volume is FAT format (ie. only supports short 8.3 | |
1581 | names); also set path pointer to start of pathname in name. */ | |
1582 | int | |
1583 | is_fat_volume (const char * name, const char ** pPath) | |
1584 | { | |
1585 | if (get_volume_info (name, pPath)) | |
1586 | return (volume_info.maxcomp == 12); | |
1587 | return FALSE; | |
1588 | } | |
1589 | ||
1590 | /* Map filename to a legal 8.3 name if necessary. */ | |
1591 | const char * | |
fbd6baed | 1592 | map_w32_filename (const char * name, const char ** pPath) |
480b0c5b GV |
1593 | { |
1594 | static char shortname[MAX_PATH]; | |
1595 | char * str = shortname; | |
1596 | char c; | |
480b0c5b | 1597 | char * path; |
76b3903d | 1598 | const char * save_name = name; |
480b0c5b | 1599 | |
ca149beb AI |
1600 | if (strlen (name) >= MAX_PATH) |
1601 | { | |
1602 | /* Return a filename which will cause callers to fail. */ | |
1603 | strcpy (shortname, "?"); | |
1604 | return shortname; | |
1605 | } | |
1606 | ||
a302c7ae | 1607 | if (is_fat_volume (name, (const char **)&path)) /* truncate to 8.3 */ |
95ed0025 | 1608 | { |
480b0c5b GV |
1609 | register int left = 8; /* maximum number of chars in part */ |
1610 | register int extn = 0; /* extension added? */ | |
1611 | register int dots = 2; /* maximum number of dots allowed */ | |
1612 | ||
1613 | while (name < path) | |
1614 | *str++ = *name++; /* skip past UNC header */ | |
1615 | ||
1616 | while ((c = *name++)) | |
1617 | { | |
1618 | switch ( c ) | |
1619 | { | |
1620 | case '\\': | |
1621 | case '/': | |
1622 | *str++ = '\\'; | |
1623 | extn = 0; /* reset extension flags */ | |
1624 | dots = 2; /* max 2 dots */ | |
1625 | left = 8; /* max length 8 for main part */ | |
1626 | break; | |
1627 | case ':': | |
1628 | *str++ = ':'; | |
1629 | extn = 0; /* reset extension flags */ | |
1630 | dots = 2; /* max 2 dots */ | |
1631 | left = 8; /* max length 8 for main part */ | |
1632 | break; | |
1633 | case '.': | |
1634 | if ( dots ) | |
1635 | { | |
1636 | /* Convert path components of the form .xxx to _xxx, | |
1637 | but leave . and .. as they are. This allows .emacs | |
1638 | to be read as _emacs, for example. */ | |
1639 | ||
1640 | if (! *name || | |
1641 | *name == '.' || | |
1642 | IS_DIRECTORY_SEP (*name)) | |
1643 | { | |
1644 | *str++ = '.'; | |
1645 | dots--; | |
1646 | } | |
1647 | else | |
1648 | { | |
1649 | *str++ = '_'; | |
1650 | left--; | |
1651 | dots = 0; | |
1652 | } | |
1653 | } | |
1654 | else if ( !extn ) | |
1655 | { | |
1656 | *str++ = '.'; | |
1657 | extn = 1; /* we've got an extension */ | |
1658 | left = 3; /* 3 chars in extension */ | |
1659 | } | |
1660 | else | |
1661 | { | |
1662 | /* any embedded dots after the first are converted to _ */ | |
1663 | *str++ = '_'; | |
1664 | } | |
1665 | break; | |
1666 | case '~': | |
1667 | case '#': /* don't lose these, they're important */ | |
1668 | if ( ! left ) | |
1669 | str[-1] = c; /* replace last character of part */ | |
1670 | /* FALLTHRU */ | |
1671 | default: | |
1672 | if ( left ) | |
1673 | { | |
1674 | *str++ = tolower (c); /* map to lower case (looks nicer) */ | |
1675 | left--; | |
1676 | dots = 0; /* started a path component */ | |
1677 | } | |
1678 | break; | |
1679 | } | |
1680 | } | |
1681 | *str = '\0'; | |
fc85cb29 RS |
1682 | } |
1683 | else | |
1684 | { | |
1685 | strcpy (shortname, name); | |
1686 | unixtodos_filename (shortname); | |
95ed0025 | 1687 | } |
480b0c5b GV |
1688 | |
1689 | if (pPath) | |
76b3903d | 1690 | *pPath = shortname + (path - save_name); |
480b0c5b | 1691 | |
fc85cb29 | 1692 | return shortname; |
480b0c5b GV |
1693 | } |
1694 | ||
b3308d2e KH |
1695 | static int |
1696 | is_exec (const char * name) | |
1697 | { | |
1698 | char * p = strrchr (name, '.'); | |
1699 | return | |
1700 | (p != NULL | |
1701 | && (stricmp (p, ".exe") == 0 || | |
1702 | stricmp (p, ".com") == 0 || | |
1703 | stricmp (p, ".bat") == 0 || | |
1704 | stricmp (p, ".cmd") == 0)); | |
1705 | } | |
1706 | ||
177c0ea7 | 1707 | /* Emulate the Unix directory procedures opendir, closedir, |
76b3903d GV |
1708 | and readdir. We can't use the procedures supplied in sysdep.c, |
1709 | so we provide them here. */ | |
1710 | ||
1711 | struct direct dir_static; /* simulated directory contents */ | |
1712 | static HANDLE dir_find_handle = INVALID_HANDLE_VALUE; | |
1713 | static int dir_is_fat; | |
1714 | static char dir_pathname[MAXPATHLEN+1]; | |
1715 | static WIN32_FIND_DATA dir_find_data; | |
1716 | ||
9d3355d1 GV |
1717 | /* Support shares on a network resource as subdirectories of a read-only |
1718 | root directory. */ | |
1719 | static HANDLE wnet_enum_handle = INVALID_HANDLE_VALUE; | |
e0c181dd | 1720 | HANDLE open_unc_volume (const char *); |
9d3355d1 GV |
1721 | char *read_unc_volume (HANDLE, char *, int); |
1722 | void close_unc_volume (HANDLE); | |
1723 | ||
76b3903d GV |
1724 | DIR * |
1725 | opendir (char *filename) | |
1726 | { | |
1727 | DIR *dirp; | |
1728 | ||
1729 | /* Opening is done by FindFirstFile. However, a read is inherent to | |
1730 | this operation, so we defer the open until read time. */ | |
1731 | ||
76b3903d GV |
1732 | if (dir_find_handle != INVALID_HANDLE_VALUE) |
1733 | return NULL; | |
9d3355d1 GV |
1734 | if (wnet_enum_handle != INVALID_HANDLE_VALUE) |
1735 | return NULL; | |
1736 | ||
1737 | if (is_unc_volume (filename)) | |
1738 | { | |
1739 | wnet_enum_handle = open_unc_volume (filename); | |
1740 | if (wnet_enum_handle == INVALID_HANDLE_VALUE) | |
1741 | return NULL; | |
1742 | } | |
1743 | ||
1744 | if (!(dirp = (DIR *) malloc (sizeof (DIR)))) | |
1745 | return NULL; | |
76b3903d GV |
1746 | |
1747 | dirp->dd_fd = 0; | |
1748 | dirp->dd_loc = 0; | |
1749 | dirp->dd_size = 0; | |
1750 | ||
1751 | strncpy (dir_pathname, map_w32_filename (filename, NULL), MAXPATHLEN); | |
1752 | dir_pathname[MAXPATHLEN] = '\0'; | |
1753 | dir_is_fat = is_fat_volume (filename, NULL); | |
1754 | ||
1755 | return dirp; | |
1756 | } | |
1757 | ||
1758 | void | |
1759 | closedir (DIR *dirp) | |
1760 | { | |
1761 | /* If we have a find-handle open, close it. */ | |
1762 | if (dir_find_handle != INVALID_HANDLE_VALUE) | |
1763 | { | |
1764 | FindClose (dir_find_handle); | |
1765 | dir_find_handle = INVALID_HANDLE_VALUE; | |
1766 | } | |
9d3355d1 GV |
1767 | else if (wnet_enum_handle != INVALID_HANDLE_VALUE) |
1768 | { | |
1769 | close_unc_volume (wnet_enum_handle); | |
1770 | wnet_enum_handle = INVALID_HANDLE_VALUE; | |
1771 | } | |
76b3903d GV |
1772 | xfree ((char *) dirp); |
1773 | } | |
1774 | ||
1775 | struct direct * | |
1776 | readdir (DIR *dirp) | |
1777 | { | |
9d3355d1 GV |
1778 | if (wnet_enum_handle != INVALID_HANDLE_VALUE) |
1779 | { | |
177c0ea7 JB |
1780 | if (!read_unc_volume (wnet_enum_handle, |
1781 | dir_find_data.cFileName, | |
9d3355d1 GV |
1782 | MAX_PATH)) |
1783 | return NULL; | |
1784 | } | |
76b3903d | 1785 | /* If we aren't dir_finding, do a find-first, otherwise do a find-next. */ |
9d3355d1 | 1786 | else if (dir_find_handle == INVALID_HANDLE_VALUE) |
76b3903d GV |
1787 | { |
1788 | char filename[MAXNAMLEN + 3]; | |
1789 | int ln; | |
1790 | ||
1791 | strcpy (filename, dir_pathname); | |
1792 | ln = strlen (filename) - 1; | |
1793 | if (!IS_DIRECTORY_SEP (filename[ln])) | |
1794 | strcat (filename, "\\"); | |
1795 | strcat (filename, "*"); | |
1796 | ||
1797 | dir_find_handle = FindFirstFile (filename, &dir_find_data); | |
1798 | ||
1799 | if (dir_find_handle == INVALID_HANDLE_VALUE) | |
1800 | return NULL; | |
1801 | } | |
1802 | else | |
1803 | { | |
1804 | if (!FindNextFile (dir_find_handle, &dir_find_data)) | |
1805 | return NULL; | |
1806 | } | |
177c0ea7 | 1807 | |
76b3903d GV |
1808 | /* Emacs never uses this value, so don't bother making it match |
1809 | value returned by stat(). */ | |
1810 | dir_static.d_ino = 1; | |
177c0ea7 | 1811 | |
76b3903d GV |
1812 | dir_static.d_reclen = sizeof (struct direct) - MAXNAMLEN + 3 + |
1813 | dir_static.d_namlen - dir_static.d_namlen % 4; | |
177c0ea7 | 1814 | |
76b3903d GV |
1815 | dir_static.d_namlen = strlen (dir_find_data.cFileName); |
1816 | strcpy (dir_static.d_name, dir_find_data.cFileName); | |
1817 | if (dir_is_fat) | |
1818 | _strlwr (dir_static.d_name); | |
1819 | else if (!NILP (Vw32_downcase_file_names)) | |
1820 | { | |
1821 | register char *p; | |
1822 | for (p = dir_static.d_name; *p; p++) | |
1823 | if (*p >= 'a' && *p <= 'z') | |
1824 | break; | |
1825 | if (!*p) | |
1826 | _strlwr (dir_static.d_name); | |
1827 | } | |
177c0ea7 | 1828 | |
76b3903d GV |
1829 | return &dir_static; |
1830 | } | |
1831 | ||
9d3355d1 | 1832 | HANDLE |
e0c181dd | 1833 | open_unc_volume (const char *path) |
9d3355d1 | 1834 | { |
177c0ea7 | 1835 | NETRESOURCE nr; |
9d3355d1 GV |
1836 | HANDLE henum; |
1837 | int result; | |
1838 | ||
177c0ea7 JB |
1839 | nr.dwScope = RESOURCE_GLOBALNET; |
1840 | nr.dwType = RESOURCETYPE_DISK; | |
1841 | nr.dwDisplayType = RESOURCEDISPLAYTYPE_SERVER; | |
1842 | nr.dwUsage = RESOURCEUSAGE_CONTAINER; | |
1843 | nr.lpLocalName = NULL; | |
6e602566 | 1844 | nr.lpRemoteName = (LPSTR)map_w32_filename (path, NULL); |
177c0ea7 JB |
1845 | nr.lpComment = NULL; |
1846 | nr.lpProvider = NULL; | |
9d3355d1 | 1847 | |
177c0ea7 | 1848 | result = WNetOpenEnum(RESOURCE_GLOBALNET, RESOURCETYPE_DISK, |
9d3355d1 GV |
1849 | RESOURCEUSAGE_CONNECTABLE, &nr, &henum); |
1850 | ||
1851 | if (result == NO_ERROR) | |
1852 | return henum; | |
1853 | else | |
1854 | return INVALID_HANDLE_VALUE; | |
1855 | } | |
1856 | ||
1857 | char * | |
1858 | read_unc_volume (HANDLE henum, char *readbuf, int size) | |
1859 | { | |
a302c7ae | 1860 | DWORD count; |
9d3355d1 | 1861 | int result; |
a302c7ae | 1862 | DWORD bufsize = 512; |
9d3355d1 GV |
1863 | char *buffer; |
1864 | char *ptr; | |
1865 | ||
1866 | count = 1; | |
1867 | buffer = alloca (bufsize); | |
1868 | result = WNetEnumResource (wnet_enum_handle, &count, buffer, &bufsize); | |
1869 | if (result != NO_ERROR) | |
1870 | return NULL; | |
1871 | ||
1872 | /* WNetEnumResource returns \\resource\share...skip forward to "share". */ | |
1873 | ptr = ((LPNETRESOURCE) buffer)->lpRemoteName; | |
1874 | ptr += 2; | |
1875 | while (*ptr && !IS_DIRECTORY_SEP (*ptr)) ptr++; | |
1876 | ptr++; | |
1877 | ||
1878 | strncpy (readbuf, ptr, size); | |
1879 | return readbuf; | |
1880 | } | |
1881 | ||
1882 | void | |
1883 | close_unc_volume (HANDLE henum) | |
1884 | { | |
1885 | if (henum != INVALID_HANDLE_VALUE) | |
1886 | WNetCloseEnum (henum); | |
1887 | } | |
1888 | ||
1889 | DWORD | |
e0c181dd | 1890 | unc_volume_file_attributes (const char *path) |
9d3355d1 GV |
1891 | { |
1892 | HANDLE henum; | |
1893 | DWORD attrs; | |
1894 | ||
1895 | henum = open_unc_volume (path); | |
1896 | if (henum == INVALID_HANDLE_VALUE) | |
1897 | return -1; | |
1898 | ||
1899 | attrs = FILE_ATTRIBUTE_READONLY | FILE_ATTRIBUTE_DIRECTORY; | |
1900 | ||
1901 | close_unc_volume (henum); | |
1902 | ||
1903 | return attrs; | |
1904 | } | |
1905 | ||
480b0c5b GV |
1906 | |
1907 | /* Shadow some MSVC runtime functions to map requests for long filenames | |
1908 | to reasonable short names if necessary. This was originally added to | |
177c0ea7 | 1909 | permit running Emacs on NT 3.1 on a FAT partition, which doesn't support |
480b0c5b GV |
1910 | long file names. */ |
1911 | ||
1912 | int | |
1913 | sys_access (const char * path, int mode) | |
1914 | { | |
b3308d2e KH |
1915 | DWORD attributes; |
1916 | ||
1917 | /* MSVC implementation doesn't recognize D_OK. */ | |
1918 | path = map_w32_filename (path, NULL); | |
9d3355d1 GV |
1919 | if (is_unc_volume (path)) |
1920 | { | |
1921 | attributes = unc_volume_file_attributes (path); | |
1922 | if (attributes == -1) { | |
1923 | errno = EACCES; | |
1924 | return -1; | |
1925 | } | |
1926 | } | |
1927 | else if ((attributes = GetFileAttributes (path)) == -1) | |
b3308d2e KH |
1928 | { |
1929 | /* Should try mapping GetLastError to errno; for now just indicate | |
1930 | that path doesn't exist. */ | |
1931 | errno = EACCES; | |
1932 | return -1; | |
1933 | } | |
1934 | if ((mode & X_OK) != 0 && !is_exec (path)) | |
1935 | { | |
1936 | errno = EACCES; | |
1937 | return -1; | |
1938 | } | |
1939 | if ((mode & W_OK) != 0 && (attributes & FILE_ATTRIBUTE_READONLY) != 0) | |
1940 | { | |
1941 | errno = EACCES; | |
1942 | return -1; | |
1943 | } | |
1944 | if ((mode & D_OK) != 0 && (attributes & FILE_ATTRIBUTE_DIRECTORY) == 0) | |
1945 | { | |
1946 | errno = EACCES; | |
1947 | return -1; | |
1948 | } | |
1949 | return 0; | |
480b0c5b GV |
1950 | } |
1951 | ||
1952 | int | |
1953 | sys_chdir (const char * path) | |
1954 | { | |
fbd6baed | 1955 | return _chdir (map_w32_filename (path, NULL)); |
480b0c5b GV |
1956 | } |
1957 | ||
1958 | int | |
1959 | sys_chmod (const char * path, int mode) | |
1960 | { | |
fbd6baed | 1961 | return _chmod (map_w32_filename (path, NULL), mode); |
480b0c5b GV |
1962 | } |
1963 | ||
2d5ab4bf EZ |
1964 | int |
1965 | sys_chown (const char *path, uid_t owner, gid_t group) | |
1966 | { | |
1967 | if (sys_chmod (path, _S_IREAD) == -1) /* check if file exists */ | |
1968 | return -1; | |
1969 | return 0; | |
1970 | } | |
1971 | ||
480b0c5b GV |
1972 | int |
1973 | sys_creat (const char * path, int mode) | |
1974 | { | |
fbd6baed | 1975 | return _creat (map_w32_filename (path, NULL), mode); |
480b0c5b GV |
1976 | } |
1977 | ||
1978 | FILE * | |
1979 | sys_fopen(const char * path, const char * mode) | |
1980 | { | |
1981 | int fd; | |
1982 | int oflag; | |
1983 | const char * mode_save = mode; | |
1984 | ||
1985 | /* Force all file handles to be non-inheritable. This is necessary to | |
1986 | ensure child processes don't unwittingly inherit handles that might | |
1987 | prevent future file access. */ | |
1988 | ||
1989 | if (mode[0] == 'r') | |
1990 | oflag = O_RDONLY; | |
1991 | else if (mode[0] == 'w' || mode[0] == 'a') | |
1992 | oflag = O_WRONLY | O_CREAT | O_TRUNC; | |
95ed0025 | 1993 | else |
480b0c5b GV |
1994 | return NULL; |
1995 | ||
1996 | /* Only do simplistic option parsing. */ | |
1997 | while (*++mode) | |
1998 | if (mode[0] == '+') | |
1999 | { | |
2000 | oflag &= ~(O_RDONLY | O_WRONLY); | |
2001 | oflag |= O_RDWR; | |
2002 | } | |
2003 | else if (mode[0] == 'b') | |
2004 | { | |
2005 | oflag &= ~O_TEXT; | |
2006 | oflag |= O_BINARY; | |
2007 | } | |
2008 | else if (mode[0] == 't') | |
2009 | { | |
2010 | oflag &= ~O_BINARY; | |
2011 | oflag |= O_TEXT; | |
2012 | } | |
2013 | else break; | |
2014 | ||
fbd6baed | 2015 | fd = _open (map_w32_filename (path, NULL), oflag | _O_NOINHERIT, 0644); |
480b0c5b GV |
2016 | if (fd < 0) |
2017 | return NULL; | |
2018 | ||
76b3903d | 2019 | return _fdopen (fd, mode_save); |
95ed0025 | 2020 | } |
480b0c5b | 2021 | |
76b3903d | 2022 | /* This only works on NTFS volumes, but is useful to have. */ |
480b0c5b | 2023 | int |
76b3903d | 2024 | sys_link (const char * old, const char * new) |
480b0c5b | 2025 | { |
76b3903d GV |
2026 | HANDLE fileh; |
2027 | int result = -1; | |
2028 | char oldname[MAX_PATH], newname[MAX_PATH]; | |
2029 | ||
2030 | if (old == NULL || new == NULL) | |
2031 | { | |
2032 | errno = ENOENT; | |
2033 | return -1; | |
2034 | } | |
2035 | ||
2036 | strcpy (oldname, map_w32_filename (old, NULL)); | |
2037 | strcpy (newname, map_w32_filename (new, NULL)); | |
2038 | ||
2039 | fileh = CreateFile (oldname, 0, 0, NULL, OPEN_EXISTING, | |
2040 | FILE_FLAG_BACKUP_SEMANTICS, NULL); | |
2041 | if (fileh != INVALID_HANDLE_VALUE) | |
2042 | { | |
2043 | int wlen; | |
2044 | ||
2045 | /* Confusingly, the "alternate" stream name field does not apply | |
2046 | when restoring a hard link, and instead contains the actual | |
2047 | stream data for the link (ie. the name of the link to create). | |
2048 | The WIN32_STREAM_ID structure before the cStreamName field is | |
2049 | the stream header, which is then immediately followed by the | |
2050 | stream data. */ | |
2051 | ||
2052 | struct { | |
2053 | WIN32_STREAM_ID wid; | |
2054 | WCHAR wbuffer[MAX_PATH]; /* extra space for link name */ | |
2055 | } data; | |
2056 | ||
2057 | wlen = MultiByteToWideChar (CP_ACP, MB_PRECOMPOSED, newname, -1, | |
2058 | data.wid.cStreamName, MAX_PATH); | |
2059 | if (wlen > 0) | |
2060 | { | |
2061 | LPVOID context = NULL; | |
2062 | DWORD wbytes = 0; | |
2063 | ||
2064 | data.wid.dwStreamId = BACKUP_LINK; | |
2065 | data.wid.dwStreamAttributes = 0; | |
2066 | data.wid.Size.LowPart = wlen * sizeof(WCHAR); | |
2067 | data.wid.Size.HighPart = 0; | |
2068 | data.wid.dwStreamNameSize = 0; | |
2069 | ||
2070 | if (BackupWrite (fileh, (LPBYTE)&data, | |
2071 | offsetof (WIN32_STREAM_ID, cStreamName) | |
2072 | + data.wid.Size.LowPart, | |
2073 | &wbytes, FALSE, FALSE, &context) | |
2074 | && BackupWrite (fileh, NULL, 0, &wbytes, TRUE, FALSE, &context)) | |
2075 | { | |
2076 | /* succeeded */ | |
2077 | result = 0; | |
2078 | } | |
2079 | else | |
2080 | { | |
2081 | /* Should try mapping GetLastError to errno; for now just | |
2082 | indicate a general error (eg. links not supported). */ | |
2083 | errno = EINVAL; // perhaps EMLINK? | |
2084 | } | |
2085 | } | |
2086 | ||
2087 | CloseHandle (fileh); | |
2088 | } | |
2089 | else | |
2090 | errno = ENOENT; | |
2091 | ||
2092 | return result; | |
480b0c5b GV |
2093 | } |
2094 | ||
2095 | int | |
2096 | sys_mkdir (const char * path) | |
2097 | { | |
fbd6baed | 2098 | return _mkdir (map_w32_filename (path, NULL)); |
480b0c5b GV |
2099 | } |
2100 | ||
9d1778b1 RS |
2101 | /* Because of long name mapping issues, we need to implement this |
2102 | ourselves. Also, MSVC's _mktemp returns NULL when it can't generate | |
2103 | a unique name, instead of setting the input template to an empty | |
2104 | string. | |
2105 | ||
2106 | Standard algorithm seems to be use pid or tid with a letter on the | |
2107 | front (in place of the 6 X's) and cycle through the letters to find a | |
2108 | unique name. We extend that to allow any reasonable character as the | |
2109 | first of the 6 X's. */ | |
480b0c5b GV |
2110 | char * |
2111 | sys_mktemp (char * template) | |
2112 | { | |
9d1778b1 RS |
2113 | char * p; |
2114 | int i; | |
2115 | unsigned uid = GetCurrentThreadId (); | |
2116 | static char first_char[] = "abcdefghijklmnopqrstuvwyz0123456789!%-_@#"; | |
2117 | ||
2118 | if (template == NULL) | |
2119 | return NULL; | |
2120 | p = template + strlen (template); | |
2121 | i = 5; | |
2122 | /* replace up to the last 5 X's with uid in decimal */ | |
2123 | while (--p >= template && p[0] == 'X' && --i >= 0) | |
2124 | { | |
2125 | p[0] = '0' + uid % 10; | |
2126 | uid /= 10; | |
2127 | } | |
2128 | ||
2129 | if (i < 0 && p[0] == 'X') | |
2130 | { | |
2131 | i = 0; | |
2132 | do | |
2133 | { | |
2134 | int save_errno = errno; | |
2135 | p[0] = first_char[i]; | |
2136 | if (sys_access (template, 0) < 0) | |
2137 | { | |
2138 | errno = save_errno; | |
2139 | return template; | |
2140 | } | |
2141 | } | |
2142 | while (++i < sizeof (first_char)); | |
2143 | } | |
2144 | ||
2145 | /* Template is badly formed or else we can't generate a unique name, | |
2146 | so return empty string */ | |
2147 | template[0] = 0; | |
2148 | return template; | |
480b0c5b GV |
2149 | } |
2150 | ||
2151 | int | |
2152 | sys_open (const char * path, int oflag, int mode) | |
2153 | { | |
302f0b29 GM |
2154 | const char* mpath = map_w32_filename (path, NULL); |
2155 | /* Try to open file without _O_CREAT, to be able to write to hidden | |
2156 | and system files. Force all file handles to be | |
2157 | non-inheritable. */ | |
2158 | int res = _open (mpath, (oflag & ~_O_CREAT) | _O_NOINHERIT, mode); | |
2159 | if (res >= 0) | |
2160 | return res; | |
2161 | return _open (mpath, oflag | _O_NOINHERIT, mode); | |
480b0c5b GV |
2162 | } |
2163 | ||
2164 | int | |
2165 | sys_rename (const char * oldname, const char * newname) | |
2166 | { | |
cfb5e855 | 2167 | BOOL result; |
b3308d2e | 2168 | char temp[MAX_PATH]; |
480b0c5b | 2169 | |
e9e23e23 | 2170 | /* MoveFile on Windows 95 doesn't correctly change the short file name |
5162ffce MB |
2171 | alias in a number of circumstances (it is not easy to predict when |
2172 | just by looking at oldname and newname, unfortunately). In these | |
2173 | cases, renaming through a temporary name avoids the problem. | |
2174 | ||
e9e23e23 | 2175 | A second problem on Windows 95 is that renaming through a temp name when |
5162ffce MB |
2176 | newname is uppercase fails (the final long name ends up in |
2177 | lowercase, although the short alias might be uppercase) UNLESS the | |
2178 | long temp name is not 8.3. | |
2179 | ||
e9e23e23 | 2180 | So, on Windows 95 we always rename through a temp name, and we make sure |
5162ffce | 2181 | the temp name has a long extension to ensure correct renaming. */ |
480b0c5b | 2182 | |
fbd6baed | 2183 | strcpy (temp, map_w32_filename (oldname, NULL)); |
480b0c5b | 2184 | |
76b3903d | 2185 | if (os_subtype == OS_WIN95) |
480b0c5b | 2186 | { |
b3308d2e | 2187 | char * o; |
480b0c5b | 2188 | char * p; |
b3308d2e KH |
2189 | int i = 0; |
2190 | ||
2191 | oldname = map_w32_filename (oldname, NULL); | |
2192 | if (o = strrchr (oldname, '\\')) | |
2193 | o++; | |
2194 | else | |
2195 | o = (char *) oldname; | |
480b0c5b | 2196 | |
480b0c5b GV |
2197 | if (p = strrchr (temp, '\\')) |
2198 | p++; | |
2199 | else | |
2200 | p = temp; | |
b3308d2e KH |
2201 | |
2202 | do | |
2203 | { | |
2204 | /* Force temp name to require a manufactured 8.3 alias - this | |
2205 | seems to make the second rename work properly. */ | |
f313ee82 | 2206 | sprintf (p, "_.%s.%u", o, i); |
b3308d2e | 2207 | i++; |
58f0cb7e | 2208 | result = rename (oldname, temp); |
b3308d2e KH |
2209 | } |
2210 | /* This loop must surely terminate! */ | |
cfb5e855 | 2211 | while (result < 0 && errno == EEXIST); |
58f0cb7e | 2212 | if (result < 0) |
480b0c5b GV |
2213 | return -1; |
2214 | } | |
2215 | ||
2216 | /* Emulate Unix behaviour - newname is deleted if it already exists | |
5162ffce | 2217 | (at least if it is a file; don't do this for directories). |
76b3903d | 2218 | |
b3308d2e KH |
2219 | Since we mustn't do this if we are just changing the case of the |
2220 | file name (we would end up deleting the file we are trying to | |
2221 | rename!), we let rename detect if the destination file already | |
2222 | exists - that way we avoid the possible pitfalls of trying to | |
2223 | determine ourselves whether two names really refer to the same | |
2224 | file, which is not always possible in the general case. (Consider | |
2225 | all the permutations of shared or subst'd drives, etc.) */ | |
2226 | ||
2227 | newname = map_w32_filename (newname, NULL); | |
eb9ea53f | 2228 | result = rename (temp, newname); |
b3308d2e KH |
2229 | |
2230 | if (result < 0 | |
cfb5e855 | 2231 | && errno == EEXIST |
b3308d2e KH |
2232 | && _chmod (newname, 0666) == 0 |
2233 | && _unlink (newname) == 0) | |
2234 | result = rename (temp, newname); | |
480b0c5b | 2235 | |
eb9ea53f | 2236 | return result; |
480b0c5b GV |
2237 | } |
2238 | ||
2239 | int | |
2240 | sys_rmdir (const char * path) | |
2241 | { | |
fbd6baed | 2242 | return _rmdir (map_w32_filename (path, NULL)); |
480b0c5b GV |
2243 | } |
2244 | ||
2245 | int | |
2246 | sys_unlink (const char * path) | |
2247 | { | |
16bb7578 GV |
2248 | path = map_w32_filename (path, NULL); |
2249 | ||
2250 | /* On Unix, unlink works without write permission. */ | |
2251 | _chmod (path, 0666); | |
2252 | return _unlink (path); | |
480b0c5b GV |
2253 | } |
2254 | ||
2255 | static FILETIME utc_base_ft; | |
2256 | static long double utc_base; | |
2257 | static int init = 0; | |
2258 | ||
2259 | static time_t | |
2260 | convert_time (FILETIME ft) | |
2261 | { | |
2262 | long double ret; | |
2263 | ||
2264 | if (!init) | |
2265 | { | |
2266 | /* Determine the delta between 1-Jan-1601 and 1-Jan-1970. */ | |
2267 | SYSTEMTIME st; | |
2268 | ||
2269 | st.wYear = 1970; | |
2270 | st.wMonth = 1; | |
2271 | st.wDay = 1; | |
2272 | st.wHour = 0; | |
2273 | st.wMinute = 0; | |
2274 | st.wSecond = 0; | |
2275 | st.wMilliseconds = 0; | |
2276 | ||
2277 | SystemTimeToFileTime (&st, &utc_base_ft); | |
2278 | utc_base = (long double) utc_base_ft.dwHighDateTime | |
69b72317 | 2279 | * 4096.0L * 1024.0L * 1024.0L + utc_base_ft.dwLowDateTime; |
480b0c5b GV |
2280 | init = 1; |
2281 | } | |
2282 | ||
2283 | if (CompareFileTime (&ft, &utc_base_ft) < 0) | |
2284 | return 0; | |
2285 | ||
69b72317 EZ |
2286 | ret = (long double) ft.dwHighDateTime |
2287 | * 4096.0L * 1024.0L * 1024.0L + ft.dwLowDateTime; | |
480b0c5b | 2288 | ret -= utc_base; |
69b72317 | 2289 | return (time_t) (ret * 1e-7L); |
480b0c5b GV |
2290 | } |
2291 | ||
480b0c5b GV |
2292 | void |
2293 | convert_from_time_t (time_t time, FILETIME * pft) | |
2294 | { | |
2295 | long double tmp; | |
2296 | ||
2297 | if (!init) | |
2298 | { | |
2299 | /* Determine the delta between 1-Jan-1601 and 1-Jan-1970. */ | |
2300 | SYSTEMTIME st; | |
2301 | ||
2302 | st.wYear = 1970; | |
2303 | st.wMonth = 1; | |
2304 | st.wDay = 1; | |
2305 | st.wHour = 0; | |
2306 | st.wMinute = 0; | |
2307 | st.wSecond = 0; | |
2308 | st.wMilliseconds = 0; | |
2309 | ||
2310 | SystemTimeToFileTime (&st, &utc_base_ft); | |
2311 | utc_base = (long double) utc_base_ft.dwHighDateTime | |
2312 | * 4096 * 1024 * 1024 + utc_base_ft.dwLowDateTime; | |
2313 | init = 1; | |
2314 | } | |
2315 | ||
2316 | /* time in 100ns units since 1-Jan-1601 */ | |
2317 | tmp = (long double) time * 1e7 + utc_base; | |
2318 | pft->dwHighDateTime = (DWORD) (tmp / (4096.0 * 1024 * 1024)); | |
16bb7578 | 2319 | pft->dwLowDateTime = (DWORD) (tmp - (4096.0 * 1024 * 1024) * pft->dwHighDateTime); |
480b0c5b | 2320 | } |
480b0c5b | 2321 | |
76b3903d GV |
2322 | #if 0 |
2323 | /* No reason to keep this; faking inode values either by hashing or even | |
2324 | using the file index from GetInformationByHandle, is not perfect and | |
2325 | so by default Emacs doesn't use the inode values on Windows. | |
2326 | Instead, we now determine file-truename correctly (except for | |
2327 | possible drive aliasing etc). */ | |
2328 | ||
2329 | /* Modified version of "PJW" algorithm (see the "Dragon" compiler book). */ | |
480b0c5b | 2330 | static unsigned |
76b3903d | 2331 | hashval (const unsigned char * str) |
480b0c5b GV |
2332 | { |
2333 | unsigned h = 0; | |
480b0c5b GV |
2334 | while (*str) |
2335 | { | |
2336 | h = (h << 4) + *str++; | |
76b3903d | 2337 | h ^= (h >> 28); |
480b0c5b GV |
2338 | } |
2339 | return h; | |
2340 | } | |
2341 | ||
2342 | /* Return the hash value of the canonical pathname, excluding the | |
2343 | drive/UNC header, to get a hopefully unique inode number. */ | |
76b3903d | 2344 | static DWORD |
480b0c5b GV |
2345 | generate_inode_val (const char * name) |
2346 | { | |
2347 | char fullname[ MAX_PATH ]; | |
2348 | char * p; | |
2349 | unsigned hash; | |
2350 | ||
76b3903d GV |
2351 | /* Get the truly canonical filename, if it exists. (Note: this |
2352 | doesn't resolve aliasing due to subst commands, or recognise hard | |
2353 | links. */ | |
2354 | if (!w32_get_long_filename ((char *)name, fullname, MAX_PATH)) | |
2355 | abort (); | |
2356 | ||
2357 | parse_root (fullname, &p); | |
fbd6baed | 2358 | /* Normal W32 filesystems are still case insensitive. */ |
480b0c5b | 2359 | _strlwr (p); |
76b3903d | 2360 | return hashval (p); |
480b0c5b GV |
2361 | } |
2362 | ||
76b3903d GV |
2363 | #endif |
2364 | ||
480b0c5b GV |
2365 | /* MSVC stat function can't cope with UNC names and has other bugs, so |
2366 | replace it with our own. This also allows us to calculate consistent | |
2367 | inode values without hacks in the main Emacs code. */ | |
2368 | int | |
2369 | stat (const char * path, struct stat * buf) | |
2370 | { | |
eb9ea53f | 2371 | char *name, *r; |
480b0c5b GV |
2372 | WIN32_FIND_DATA wfd; |
2373 | HANDLE fh; | |
76b3903d | 2374 | DWORD fake_inode; |
480b0c5b GV |
2375 | int permission; |
2376 | int len; | |
2377 | int rootdir = FALSE; | |
2378 | ||
2379 | if (path == NULL || buf == NULL) | |
2380 | { | |
2381 | errno = EFAULT; | |
2382 | return -1; | |
2383 | } | |
2384 | ||
fbd6baed | 2385 | name = (char *) map_w32_filename (path, &path); |
22189f79 EZ |
2386 | /* Must be valid filename, no wild cards or other invalid |
2387 | characters. We use _mbspbrk to support multibyte strings that | |
2388 | might look to strpbrk as if they included literal *, ?, and other | |
2389 | characters mentioned below that are disallowed by Windows | |
2390 | filesystems. */ | |
2391 | if (_mbspbrk (name, "*?|<>\"")) | |
480b0c5b GV |
2392 | { |
2393 | errno = ENOENT; | |
2394 | return -1; | |
2395 | } | |
2396 | ||
eb9ea53f GV |
2397 | /* If name is "c:/.." or "/.." then stat "c:/" or "/". */ |
2398 | r = IS_DEVICE_SEP (name[1]) ? &name[2] : name; | |
2399 | if (IS_DIRECTORY_SEP (r[0]) && r[1] == '.' && r[2] == '.' && r[3] == '\0') | |
2400 | { | |
2401 | r[1] = r[2] = '\0'; | |
2402 | } | |
2403 | ||
480b0c5b GV |
2404 | /* Remove trailing directory separator, unless name is the root |
2405 | directory of a drive or UNC volume in which case ensure there | |
2406 | is a trailing separator. */ | |
2407 | len = strlen (name); | |
2408 | rootdir = (path >= name + len - 1 | |
2409 | && (IS_DIRECTORY_SEP (*path) || *path == 0)); | |
2410 | name = strcpy (alloca (len + 2), name); | |
2411 | ||
9d3355d1 GV |
2412 | if (is_unc_volume (name)) |
2413 | { | |
2414 | DWORD attrs = unc_volume_file_attributes (name); | |
2415 | ||
2416 | if (attrs == -1) | |
2417 | return -1; | |
2418 | ||
2419 | memset (&wfd, 0, sizeof (wfd)); | |
2420 | wfd.dwFileAttributes = attrs; | |
2421 | wfd.ftCreationTime = utc_base_ft; | |
2422 | wfd.ftLastAccessTime = utc_base_ft; | |
2423 | wfd.ftLastWriteTime = utc_base_ft; | |
2424 | strcpy (wfd.cFileName, name); | |
2425 | } | |
2426 | else if (rootdir) | |
480b0c5b GV |
2427 | { |
2428 | if (!IS_DIRECTORY_SEP (name[len-1])) | |
2429 | strcat (name, "\\"); | |
2430 | if (GetDriveType (name) < 2) | |
2431 | { | |
2432 | errno = ENOENT; | |
2433 | return -1; | |
2434 | } | |
2435 | memset (&wfd, 0, sizeof (wfd)); | |
2436 | wfd.dwFileAttributes = FILE_ATTRIBUTE_DIRECTORY; | |
2437 | wfd.ftCreationTime = utc_base_ft; | |
2438 | wfd.ftLastAccessTime = utc_base_ft; | |
2439 | wfd.ftLastWriteTime = utc_base_ft; | |
2440 | strcpy (wfd.cFileName, name); | |
2441 | } | |
2442 | else | |
2443 | { | |
2444 | if (IS_DIRECTORY_SEP (name[len-1])) | |
2445 | name[len - 1] = 0; | |
76b3903d GV |
2446 | |
2447 | /* (This is hacky, but helps when doing file completions on | |
2448 | network drives.) Optimize by using information available from | |
2449 | active readdir if possible. */ | |
b19cc00c GV |
2450 | len = strlen (dir_pathname); |
2451 | if (IS_DIRECTORY_SEP (dir_pathname[len-1])) | |
2452 | len--; | |
76b3903d | 2453 | if (dir_find_handle != INVALID_HANDLE_VALUE |
b19cc00c | 2454 | && strnicmp (name, dir_pathname, len) == 0 |
76b3903d GV |
2455 | && IS_DIRECTORY_SEP (name[len]) |
2456 | && stricmp (name + len + 1, dir_static.d_name) == 0) | |
480b0c5b | 2457 | { |
76b3903d GV |
2458 | /* This was the last entry returned by readdir. */ |
2459 | wfd = dir_find_data; | |
2460 | } | |
2461 | else | |
2462 | { | |
2463 | fh = FindFirstFile (name, &wfd); | |
2464 | if (fh == INVALID_HANDLE_VALUE) | |
2465 | { | |
2466 | errno = ENOENT; | |
2467 | return -1; | |
2468 | } | |
2469 | FindClose (fh); | |
480b0c5b | 2470 | } |
480b0c5b GV |
2471 | } |
2472 | ||
93e0f0da JR |
2473 | if (!NILP (Vw32_get_true_file_attributes) |
2474 | /* No access rights required to get info. */ | |
2475 | && (fh = CreateFile (name, 0, 0, NULL, OPEN_EXISTING, | |
2476 | FILE_FLAG_BACKUP_SEMANTICS, NULL)) | |
2477 | != INVALID_HANDLE_VALUE) | |
480b0c5b | 2478 | { |
480b0c5b GV |
2479 | /* This is more accurate in terms of gettting the correct number |
2480 | of links, but is quite slow (it is noticable when Emacs is | |
2481 | making a list of file name completions). */ | |
2482 | BY_HANDLE_FILE_INFORMATION info; | |
2483 | ||
480b0c5b GV |
2484 | if (GetFileInformationByHandle (fh, &info)) |
2485 | { | |
480b0c5b | 2486 | buf->st_nlink = info.nNumberOfLinks; |
76b3903d GV |
2487 | /* Might as well use file index to fake inode values, but this |
2488 | is not guaranteed to be unique unless we keep a handle open | |
2489 | all the time (even then there are situations where it is | |
2490 | not unique). Reputedly, there are at most 48 bits of info | |
2491 | (on NTFS, presumably less on FAT). */ | |
2492 | fake_inode = info.nFileIndexLow ^ info.nFileIndexHigh; | |
480b0c5b GV |
2493 | } |
2494 | else | |
2495 | { | |
01f31dfb AI |
2496 | buf->st_nlink = 1; |
2497 | fake_inode = 0; | |
2498 | } | |
2499 | ||
93e0f0da | 2500 | if (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) |
01f31dfb | 2501 | { |
93e0f0da JR |
2502 | buf->st_mode = _S_IFDIR; |
2503 | } | |
2504 | else | |
2505 | { | |
2506 | switch (GetFileType (fh)) | |
2507 | { | |
2508 | case FILE_TYPE_DISK: | |
2509 | buf->st_mode = _S_IFREG; | |
2510 | break; | |
2511 | case FILE_TYPE_PIPE: | |
2512 | buf->st_mode = _S_IFIFO; | |
2513 | break; | |
2514 | case FILE_TYPE_CHAR: | |
2515 | case FILE_TYPE_UNKNOWN: | |
2516 | default: | |
2517 | buf->st_mode = _S_IFCHR; | |
2518 | } | |
480b0c5b | 2519 | } |
01f31dfb | 2520 | CloseHandle (fh); |
76b3903d GV |
2521 | } |
2522 | else | |
2523 | { | |
2524 | /* Don't bother to make this information more accurate. */ | |
93e0f0da | 2525 | buf->st_mode = (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) ? |
bc5fdfc7 | 2526 | _S_IFDIR : _S_IFREG; |
480b0c5b | 2527 | buf->st_nlink = 1; |
76b3903d GV |
2528 | fake_inode = 0; |
2529 | } | |
2530 | ||
2531 | #if 0 | |
2532 | /* Not sure if there is any point in this. */ | |
2533 | if (!NILP (Vw32_generate_fake_inodes)) | |
2534 | fake_inode = generate_inode_val (name); | |
2535 | else if (fake_inode == 0) | |
2536 | { | |
2537 | /* For want of something better, try to make everything unique. */ | |
2538 | static DWORD gen_num = 0; | |
2539 | fake_inode = ++gen_num; | |
480b0c5b | 2540 | } |
76b3903d GV |
2541 | #endif |
2542 | ||
2543 | /* MSVC defines _ino_t to be short; other libc's might not. */ | |
2544 | if (sizeof (buf->st_ino) == 2) | |
2545 | buf->st_ino = fake_inode ^ (fake_inode >> 16); | |
2546 | else | |
2547 | buf->st_ino = fake_inode; | |
480b0c5b GV |
2548 | |
2549 | /* consider files to belong to current user */ | |
2550 | buf->st_uid = the_passwd.pw_uid; | |
2551 | buf->st_gid = the_passwd.pw_gid; | |
2552 | ||
fbd6baed | 2553 | /* volume_info is set indirectly by map_w32_filename */ |
480b0c5b GV |
2554 | buf->st_dev = volume_info.serialnum; |
2555 | buf->st_rdev = volume_info.serialnum; | |
2556 | ||
480b0c5b GV |
2557 | |
2558 | buf->st_size = wfd.nFileSizeLow; | |
2559 | ||
2560 | /* Convert timestamps to Unix format. */ | |
2561 | buf->st_mtime = convert_time (wfd.ftLastWriteTime); | |
2562 | buf->st_atime = convert_time (wfd.ftLastAccessTime); | |
2563 | if (buf->st_atime == 0) buf->st_atime = buf->st_mtime; | |
2564 | buf->st_ctime = convert_time (wfd.ftCreationTime); | |
2565 | if (buf->st_ctime == 0) buf->st_ctime = buf->st_mtime; | |
2566 | ||
2567 | /* determine rwx permissions */ | |
2568 | if (wfd.dwFileAttributes & FILE_ATTRIBUTE_READONLY) | |
2569 | permission = _S_IREAD; | |
2570 | else | |
2571 | permission = _S_IREAD | _S_IWRITE; | |
177c0ea7 | 2572 | |
480b0c5b GV |
2573 | if (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) |
2574 | permission |= _S_IEXEC; | |
b3308d2e KH |
2575 | else if (is_exec (name)) |
2576 | permission |= _S_IEXEC; | |
480b0c5b GV |
2577 | |
2578 | buf->st_mode |= permission | (permission >> 3) | (permission >> 6); | |
2579 | ||
2580 | return 0; | |
2581 | } | |
2582 | ||
16bb7578 GV |
2583 | /* Provide fstat and utime as well as stat for consistent handling of |
2584 | file timestamps. */ | |
2585 | int | |
2586 | fstat (int desc, struct stat * buf) | |
2587 | { | |
2588 | HANDLE fh = (HANDLE) _get_osfhandle (desc); | |
2589 | BY_HANDLE_FILE_INFORMATION info; | |
2590 | DWORD fake_inode; | |
2591 | int permission; | |
2592 | ||
2593 | switch (GetFileType (fh) & ~FILE_TYPE_REMOTE) | |
2594 | { | |
2595 | case FILE_TYPE_DISK: | |
2596 | buf->st_mode = _S_IFREG; | |
2597 | if (!GetFileInformationByHandle (fh, &info)) | |
2598 | { | |
2599 | errno = EACCES; | |
2600 | return -1; | |
2601 | } | |
2602 | break; | |
2603 | case FILE_TYPE_PIPE: | |
2604 | buf->st_mode = _S_IFIFO; | |
2605 | goto non_disk; | |
2606 | case FILE_TYPE_CHAR: | |
2607 | case FILE_TYPE_UNKNOWN: | |
2608 | default: | |
2609 | buf->st_mode = _S_IFCHR; | |
2610 | non_disk: | |
2611 | memset (&info, 0, sizeof (info)); | |
2612 | info.dwFileAttributes = 0; | |
2613 | info.ftCreationTime = utc_base_ft; | |
2614 | info.ftLastAccessTime = utc_base_ft; | |
2615 | info.ftLastWriteTime = utc_base_ft; | |
2616 | } | |
2617 | ||
2618 | if (info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) | |
16bb7578 | 2619 | buf->st_mode = _S_IFDIR; |
93e0f0da JR |
2620 | |
2621 | buf->st_nlink = info.nNumberOfLinks; | |
2622 | /* Might as well use file index to fake inode values, but this | |
2623 | is not guaranteed to be unique unless we keep a handle open | |
2624 | all the time (even then there are situations where it is | |
2625 | not unique). Reputedly, there are at most 48 bits of info | |
2626 | (on NTFS, presumably less on FAT). */ | |
2627 | fake_inode = info.nFileIndexLow ^ info.nFileIndexHigh; | |
16bb7578 GV |
2628 | |
2629 | /* MSVC defines _ino_t to be short; other libc's might not. */ | |
2630 | if (sizeof (buf->st_ino) == 2) | |
2631 | buf->st_ino = fake_inode ^ (fake_inode >> 16); | |
2632 | else | |
2633 | buf->st_ino = fake_inode; | |
2634 | ||
2635 | /* consider files to belong to current user */ | |
2636 | buf->st_uid = 0; | |
2637 | buf->st_gid = 0; | |
2638 | ||
2639 | buf->st_dev = info.dwVolumeSerialNumber; | |
2640 | buf->st_rdev = info.dwVolumeSerialNumber; | |
2641 | ||
2642 | buf->st_size = info.nFileSizeLow; | |
2643 | ||
2644 | /* Convert timestamps to Unix format. */ | |
2645 | buf->st_mtime = convert_time (info.ftLastWriteTime); | |
2646 | buf->st_atime = convert_time (info.ftLastAccessTime); | |
2647 | if (buf->st_atime == 0) buf->st_atime = buf->st_mtime; | |
2648 | buf->st_ctime = convert_time (info.ftCreationTime); | |
2649 | if (buf->st_ctime == 0) buf->st_ctime = buf->st_mtime; | |
2650 | ||
2651 | /* determine rwx permissions */ | |
2652 | if (info.dwFileAttributes & FILE_ATTRIBUTE_READONLY) | |
2653 | permission = _S_IREAD; | |
2654 | else | |
2655 | permission = _S_IREAD | _S_IWRITE; | |
177c0ea7 | 2656 | |
16bb7578 GV |
2657 | if (info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) |
2658 | permission |= _S_IEXEC; | |
2659 | else | |
2660 | { | |
2661 | #if 0 /* no way of knowing the filename */ | |
2662 | char * p = strrchr (name, '.'); | |
2663 | if (p != NULL && | |
2664 | (stricmp (p, ".exe") == 0 || | |
2665 | stricmp (p, ".com") == 0 || | |
2666 | stricmp (p, ".bat") == 0 || | |
2667 | stricmp (p, ".cmd") == 0)) | |
2668 | permission |= _S_IEXEC; | |
2669 | #endif | |
2670 | } | |
2671 | ||
2672 | buf->st_mode |= permission | (permission >> 3) | (permission >> 6); | |
2673 | ||
2674 | return 0; | |
2675 | } | |
2676 | ||
2677 | int | |
2678 | utime (const char *name, struct utimbuf *times) | |
2679 | { | |
2680 | struct utimbuf deftime; | |
2681 | HANDLE fh; | |
2682 | FILETIME mtime; | |
2683 | FILETIME atime; | |
2684 | ||
2685 | if (times == NULL) | |
2686 | { | |
2687 | deftime.modtime = deftime.actime = time (NULL); | |
2688 | times = &deftime; | |
2689 | } | |
2690 | ||
2691 | /* Need write access to set times. */ | |
2692 | fh = CreateFile (name, GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, | |
2693 | 0, OPEN_EXISTING, 0, NULL); | |
2694 | if (fh) | |
2695 | { | |
2696 | convert_from_time_t (times->actime, &atime); | |
2697 | convert_from_time_t (times->modtime, &mtime); | |
2698 | if (!SetFileTime (fh, NULL, &atime, &mtime)) | |
2699 | { | |
2700 | CloseHandle (fh); | |
2701 | errno = EACCES; | |
2702 | return -1; | |
2703 | } | |
2704 | CloseHandle (fh); | |
2705 | } | |
2706 | else | |
2707 | { | |
2708 | errno = EINVAL; | |
2709 | return -1; | |
2710 | } | |
2711 | return 0; | |
2712 | } | |
2713 | ||
480b0c5b GV |
2714 | #ifdef HAVE_SOCKETS |
2715 | ||
2716 | /* Wrappers for winsock functions to map between our file descriptors | |
2717 | and winsock's handles; also set h_errno for convenience. | |
2718 | ||
2719 | To allow Emacs to run on systems which don't have winsock support | |
2720 | installed, we dynamically link to winsock on startup if present, and | |
2721 | otherwise provide the minimum necessary functionality | |
2722 | (eg. gethostname). */ | |
2723 | ||
2724 | /* function pointers for relevant socket functions */ | |
2725 | int (PASCAL *pfn_WSAStartup) (WORD wVersionRequired, LPWSADATA lpWSAData); | |
2726 | void (PASCAL *pfn_WSASetLastError) (int iError); | |
2727 | int (PASCAL *pfn_WSAGetLastError) (void); | |
26fb7bc4 | 2728 | int (PASCAL *pfn_WSAEventSelect) (SOCKET s, HANDLE hEventObject, long lNetworkEvents); |
64570b36 KS |
2729 | HANDLE (PASCAL *pfn_WSACreateEvent) (void); |
2730 | int (PASCAL *pfn_WSACloseEvent) (HANDLE hEvent); | |
480b0c5b GV |
2731 | int (PASCAL *pfn_socket) (int af, int type, int protocol); |
2732 | int (PASCAL *pfn_bind) (SOCKET s, const struct sockaddr *addr, int namelen); | |
2733 | int (PASCAL *pfn_connect) (SOCKET s, const struct sockaddr *addr, int namelen); | |
2734 | int (PASCAL *pfn_ioctlsocket) (SOCKET s, long cmd, u_long *argp); | |
2735 | int (PASCAL *pfn_recv) (SOCKET s, char * buf, int len, int flags); | |
2736 | int (PASCAL *pfn_send) (SOCKET s, const char * buf, int len, int flags); | |
2737 | int (PASCAL *pfn_closesocket) (SOCKET s); | |
2738 | int (PASCAL *pfn_shutdown) (SOCKET s, int how); | |
2739 | int (PASCAL *pfn_WSACleanup) (void); | |
2740 | ||
2741 | u_short (PASCAL *pfn_htons) (u_short hostshort); | |
2742 | u_short (PASCAL *pfn_ntohs) (u_short netshort); | |
2743 | unsigned long (PASCAL *pfn_inet_addr) (const char * cp); | |
2744 | int (PASCAL *pfn_gethostname) (char * name, int namelen); | |
2745 | struct hostent * (PASCAL *pfn_gethostbyname) (const char * name); | |
2746 | struct servent * (PASCAL *pfn_getservbyname) (const char * name, const char * proto); | |
ecd270eb | 2747 | int (PASCAL *pfn_getpeername) (SOCKET s, struct sockaddr *addr, int * namelen); |
962955c5 JR |
2748 | int (PASCAL *pfn_setsockopt) (SOCKET s, int level, int optname, |
2749 | const char * optval, int optlen); | |
2750 | int (PASCAL *pfn_listen) (SOCKET s, int backlog); | |
2751 | int (PASCAL *pfn_getsockname) (SOCKET s, struct sockaddr * name, | |
2752 | int * namelen); | |
2753 | SOCKET (PASCAL *pfn_accept) (SOCKET s, struct sockaddr * addr, int * addrlen); | |
2754 | int (PASCAL *pfn_recvfrom) (SOCKET s, char * buf, int len, int flags, | |
2755 | struct sockaddr * from, int * fromlen); | |
2756 | int (PASCAL *pfn_sendto) (SOCKET s, const char * buf, int len, int flags, | |
2757 | const struct sockaddr * to, int tolen); | |
2758 | ||
f1614061 RS |
2759 | /* SetHandleInformation is only needed to make sockets non-inheritable. */ |
2760 | BOOL (WINAPI *pfn_SetHandleInformation) (HANDLE object, DWORD mask, DWORD flags); | |
2761 | #ifndef HANDLE_FLAG_INHERIT | |
2762 | #define HANDLE_FLAG_INHERIT 1 | |
2763 | #endif | |
480b0c5b | 2764 | |
f249a012 RS |
2765 | HANDLE winsock_lib; |
2766 | static int winsock_inuse; | |
480b0c5b | 2767 | |
f249a012 | 2768 | BOOL |
480b0c5b GV |
2769 | term_winsock (void) |
2770 | { | |
f249a012 | 2771 | if (winsock_lib != NULL && winsock_inuse == 0) |
480b0c5b | 2772 | { |
f249a012 RS |
2773 | /* Not sure what would cause WSAENETDOWN, or even if it can happen |
2774 | after WSAStartup returns successfully, but it seems reasonable | |
2775 | to allow unloading winsock anyway in that case. */ | |
2776 | if (pfn_WSACleanup () == 0 || | |
2777 | pfn_WSAGetLastError () == WSAENETDOWN) | |
2778 | { | |
2779 | if (FreeLibrary (winsock_lib)) | |
2780 | winsock_lib = NULL; | |
2781 | return TRUE; | |
2782 | } | |
480b0c5b | 2783 | } |
f249a012 | 2784 | return FALSE; |
480b0c5b GV |
2785 | } |
2786 | ||
f249a012 RS |
2787 | BOOL |
2788 | init_winsock (int load_now) | |
480b0c5b GV |
2789 | { |
2790 | WSADATA winsockData; | |
2791 | ||
f249a012 RS |
2792 | if (winsock_lib != NULL) |
2793 | return TRUE; | |
f1614061 RS |
2794 | |
2795 | pfn_SetHandleInformation = NULL; | |
2796 | pfn_SetHandleInformation | |
2797 | = (void *) GetProcAddress (GetModuleHandle ("kernel32.dll"), | |
2798 | "SetHandleInformation"); | |
2799 | ||
64570b36 | 2800 | winsock_lib = LoadLibrary ("Ws2_32.dll"); |
480b0c5b GV |
2801 | |
2802 | if (winsock_lib != NULL) | |
2803 | { | |
2804 | /* dynamically link to socket functions */ | |
2805 | ||
2806 | #define LOAD_PROC(fn) \ | |
2807 | if ((pfn_##fn = (void *) GetProcAddress (winsock_lib, #fn)) == NULL) \ | |
2808 | goto fail; | |
2809 | ||
2810 | LOAD_PROC( WSAStartup ); | |
2811 | LOAD_PROC( WSASetLastError ); | |
2812 | LOAD_PROC( WSAGetLastError ); | |
26fb7bc4 | 2813 | LOAD_PROC( WSAEventSelect ); |
64570b36 KS |
2814 | LOAD_PROC( WSACreateEvent ); |
2815 | LOAD_PROC( WSACloseEvent ); | |
480b0c5b GV |
2816 | LOAD_PROC( socket ); |
2817 | LOAD_PROC( bind ); | |
2818 | LOAD_PROC( connect ); | |
2819 | LOAD_PROC( ioctlsocket ); | |
2820 | LOAD_PROC( recv ); | |
2821 | LOAD_PROC( send ); | |
2822 | LOAD_PROC( closesocket ); | |
2823 | LOAD_PROC( shutdown ); | |
2824 | LOAD_PROC( htons ); | |
2825 | LOAD_PROC( ntohs ); | |
2826 | LOAD_PROC( inet_addr ); | |
2827 | LOAD_PROC( gethostname ); | |
2828 | LOAD_PROC( gethostbyname ); | |
2829 | LOAD_PROC( getservbyname ); | |
ecd270eb | 2830 | LOAD_PROC( getpeername ); |
480b0c5b | 2831 | LOAD_PROC( WSACleanup ); |
962955c5 JR |
2832 | LOAD_PROC( setsockopt ); |
2833 | LOAD_PROC( listen ); | |
2834 | LOAD_PROC( getsockname ); | |
2835 | LOAD_PROC( accept ); | |
2836 | LOAD_PROC( recvfrom ); | |
2837 | LOAD_PROC( sendto ); | |
f249a012 RS |
2838 | #undef LOAD_PROC |
2839 | ||
480b0c5b GV |
2840 | /* specify version 1.1 of winsock */ |
2841 | if (pfn_WSAStartup (0x101, &winsockData) == 0) | |
2842 | { | |
f249a012 RS |
2843 | if (winsockData.wVersion != 0x101) |
2844 | goto fail; | |
2845 | ||
2846 | if (!load_now) | |
2847 | { | |
2848 | /* Report that winsock exists and is usable, but leave | |
2849 | socket functions disabled. I am assuming that calling | |
2850 | WSAStartup does not require any network interaction, | |
2851 | and in particular does not cause or require a dial-up | |
2852 | connection to be established. */ | |
2853 | ||
2854 | pfn_WSACleanup (); | |
2855 | FreeLibrary (winsock_lib); | |
2856 | winsock_lib = NULL; | |
2857 | } | |
2858 | winsock_inuse = 0; | |
2859 | return TRUE; | |
480b0c5b GV |
2860 | } |
2861 | ||
2862 | fail: | |
2863 | FreeLibrary (winsock_lib); | |
f249a012 | 2864 | winsock_lib = NULL; |
480b0c5b | 2865 | } |
f249a012 RS |
2866 | |
2867 | return FALSE; | |
480b0c5b GV |
2868 | } |
2869 | ||
2870 | ||
2871 | int h_errno = 0; | |
2872 | ||
2873 | /* function to set h_errno for compatability; map winsock error codes to | |
2874 | normal system codes where they overlap (non-overlapping definitions | |
2875 | are already in <sys/socket.h> */ | |
9bfb11f9 KS |
2876 | static void |
2877 | set_errno () | |
480b0c5b | 2878 | { |
f249a012 | 2879 | if (winsock_lib == NULL) |
480b0c5b GV |
2880 | h_errno = EINVAL; |
2881 | else | |
2882 | h_errno = pfn_WSAGetLastError (); | |
2883 | ||
2884 | switch (h_errno) | |
2885 | { | |
2886 | case WSAEACCES: h_errno = EACCES; break; | |
2887 | case WSAEBADF: h_errno = EBADF; break; | |
2888 | case WSAEFAULT: h_errno = EFAULT; break; | |
2889 | case WSAEINTR: h_errno = EINTR; break; | |
2890 | case WSAEINVAL: h_errno = EINVAL; break; | |
2891 | case WSAEMFILE: h_errno = EMFILE; break; | |
2892 | case WSAENAMETOOLONG: h_errno = ENAMETOOLONG; break; | |
2893 | case WSAENOTEMPTY: h_errno = ENOTEMPTY; break; | |
2894 | } | |
2895 | errno = h_errno; | |
2896 | } | |
2897 | ||
9bfb11f9 KS |
2898 | static void |
2899 | check_errno () | |
480b0c5b | 2900 | { |
f249a012 | 2901 | if (h_errno == 0 && winsock_lib != NULL) |
480b0c5b GV |
2902 | pfn_WSASetLastError (0); |
2903 | } | |
2904 | ||
d8fcc1b9 AI |
2905 | /* Extend strerror to handle the winsock-specific error codes. */ |
2906 | struct { | |
2907 | int errnum; | |
2908 | char * msg; | |
2909 | } _wsa_errlist[] = { | |
2910 | WSAEINTR , "Interrupted function call", | |
2911 | WSAEBADF , "Bad file descriptor", | |
2912 | WSAEACCES , "Permission denied", | |
2913 | WSAEFAULT , "Bad address", | |
2914 | WSAEINVAL , "Invalid argument", | |
2915 | WSAEMFILE , "Too many open files", | |
177c0ea7 | 2916 | |
d8fcc1b9 AI |
2917 | WSAEWOULDBLOCK , "Resource temporarily unavailable", |
2918 | WSAEINPROGRESS , "Operation now in progress", | |
2919 | WSAEALREADY , "Operation already in progress", | |
2920 | WSAENOTSOCK , "Socket operation on non-socket", | |
2921 | WSAEDESTADDRREQ , "Destination address required", | |
2922 | WSAEMSGSIZE , "Message too long", | |
2923 | WSAEPROTOTYPE , "Protocol wrong type for socket", | |
2924 | WSAENOPROTOOPT , "Bad protocol option", | |
2925 | WSAEPROTONOSUPPORT , "Protocol not supported", | |
2926 | WSAESOCKTNOSUPPORT , "Socket type not supported", | |
2927 | WSAEOPNOTSUPP , "Operation not supported", | |
2928 | WSAEPFNOSUPPORT , "Protocol family not supported", | |
2929 | WSAEAFNOSUPPORT , "Address family not supported by protocol family", | |
2930 | WSAEADDRINUSE , "Address already in use", | |
2931 | WSAEADDRNOTAVAIL , "Cannot assign requested address", | |
2932 | WSAENETDOWN , "Network is down", | |
2933 | WSAENETUNREACH , "Network is unreachable", | |
2934 | WSAENETRESET , "Network dropped connection on reset", | |
2935 | WSAECONNABORTED , "Software caused connection abort", | |
2936 | WSAECONNRESET , "Connection reset by peer", | |
2937 | WSAENOBUFS , "No buffer space available", | |
2938 | WSAEISCONN , "Socket is already connected", | |
2939 | WSAENOTCONN , "Socket is not connected", | |
2940 | WSAESHUTDOWN , "Cannot send after socket shutdown", | |
2941 | WSAETOOMANYREFS , "Too many references", /* not sure */ | |
2942 | WSAETIMEDOUT , "Connection timed out", | |
2943 | WSAECONNREFUSED , "Connection refused", | |
2944 | WSAELOOP , "Network loop", /* not sure */ | |
2945 | WSAENAMETOOLONG , "Name is too long", | |
2946 | WSAEHOSTDOWN , "Host is down", | |
2947 | WSAEHOSTUNREACH , "No route to host", | |
2948 | WSAENOTEMPTY , "Buffer not empty", /* not sure */ | |
2949 | WSAEPROCLIM , "Too many processes", | |
2950 | WSAEUSERS , "Too many users", /* not sure */ | |
2951 | WSAEDQUOT , "Double quote in host name", /* really not sure */ | |
2952 | WSAESTALE , "Data is stale", /* not sure */ | |
2953 | WSAEREMOTE , "Remote error", /* not sure */ | |
177c0ea7 | 2954 | |
d8fcc1b9 AI |
2955 | WSASYSNOTREADY , "Network subsystem is unavailable", |
2956 | WSAVERNOTSUPPORTED , "WINSOCK.DLL version out of range", | |
2957 | WSANOTINITIALISED , "Winsock not initialized successfully", | |
2958 | WSAEDISCON , "Graceful shutdown in progress", | |
2959 | #ifdef WSAENOMORE | |
2960 | WSAENOMORE , "No more operations allowed", /* not sure */ | |
2961 | WSAECANCELLED , "Operation cancelled", /* not sure */ | |
2962 | WSAEINVALIDPROCTABLE , "Invalid procedure table from service provider", | |
2963 | WSAEINVALIDPROVIDER , "Invalid service provider version number", | |
2964 | WSAEPROVIDERFAILEDINIT , "Unable to initialize a service provider", | |
2965 | WSASYSCALLFAILURE , "System call failured", | |
2966 | WSASERVICE_NOT_FOUND , "Service not found", /* not sure */ | |
2967 | WSATYPE_NOT_FOUND , "Class type not found", | |
2968 | WSA_E_NO_MORE , "No more resources available", /* really not sure */ | |
2969 | WSA_E_CANCELLED , "Operation already cancelled", /* really not sure */ | |
2970 | WSAEREFUSED , "Operation refused", /* not sure */ | |
2971 | #endif | |
177c0ea7 | 2972 | |
d8fcc1b9 AI |
2973 | WSAHOST_NOT_FOUND , "Host not found", |
2974 | WSATRY_AGAIN , "Authoritative host not found during name lookup", | |
2975 | WSANO_RECOVERY , "Non-recoverable error during name lookup", | |
2976 | WSANO_DATA , "Valid name, no data record of requested type", | |
2977 | ||
2978 | -1, NULL | |
2979 | }; | |
2980 | ||
2981 | char * | |
2982 | sys_strerror(int error_no) | |
2983 | { | |
2984 | int i; | |
2985 | static char unknown_msg[40]; | |
2986 | ||
a302c7ae AI |
2987 | if (error_no >= 0 && error_no < sys_nerr) |
2988 | return sys_errlist[error_no]; | |
d8fcc1b9 AI |
2989 | |
2990 | for (i = 0; _wsa_errlist[i].errnum >= 0; i++) | |
2991 | if (_wsa_errlist[i].errnum == error_no) | |
2992 | return _wsa_errlist[i].msg; | |
2993 | ||
2994 | sprintf(unknown_msg, "Unidentified error: %d", error_no); | |
2995 | return unknown_msg; | |
2996 | } | |
2997 | ||
480b0c5b GV |
2998 | /* [andrewi 3-May-96] I've had conflicting results using both methods, |
2999 | but I believe the method of keeping the socket handle separate (and | |
3000 | insuring it is not inheritable) is the correct one. */ | |
3001 | ||
3002 | //#define SOCK_REPLACE_HANDLE | |
3003 | ||
3004 | #ifdef SOCK_REPLACE_HANDLE | |
3005 | #define SOCK_HANDLE(fd) ((SOCKET) _get_osfhandle (fd)) | |
3006 | #else | |
3007 | #define SOCK_HANDLE(fd) ((SOCKET) fd_info[fd].hnd) | |
3008 | #endif | |
3009 | ||
962955c5 JR |
3010 | int socket_to_fd (SOCKET s); |
3011 | ||
480b0c5b GV |
3012 | int |
3013 | sys_socket(int af, int type, int protocol) | |
3014 | { | |
962955c5 | 3015 | SOCKET s; |
480b0c5b | 3016 | |
f249a012 | 3017 | if (winsock_lib == NULL) |
480b0c5b GV |
3018 | { |
3019 | h_errno = ENETDOWN; | |
3020 | return INVALID_SOCKET; | |
3021 | } | |
3022 | ||
3023 | check_errno (); | |
3024 | ||
3025 | /* call the real socket function */ | |
962955c5 | 3026 | s = pfn_socket (af, type, protocol); |
177c0ea7 | 3027 | |
480b0c5b | 3028 | if (s != INVALID_SOCKET) |
962955c5 | 3029 | return socket_to_fd (s); |
480b0c5b | 3030 | |
962955c5 JR |
3031 | set_errno (); |
3032 | return -1; | |
3033 | } | |
3034 | ||
3035 | /* Convert a SOCKET to a file descriptor. */ | |
3036 | int | |
3037 | socket_to_fd (SOCKET s) | |
3038 | { | |
3039 | int fd; | |
3040 | child_process * cp; | |
3041 | ||
3042 | /* Although under NT 3.5 _open_osfhandle will accept a socket | |
3043 | handle, if opened with SO_OPENTYPE == SO_SYNCHRONOUS_NONALERT, | |
3044 | that does not work under NT 3.1. However, we can get the same | |
3045 | effect by using a backdoor function to replace an existing | |
3046 | descriptor handle with the one we want. */ | |
3047 | ||
3048 | /* allocate a file descriptor (with appropriate flags) */ | |
3049 | fd = _open ("NUL:", _O_RDWR); | |
3050 | if (fd >= 0) | |
3051 | { | |
480b0c5b | 3052 | #ifdef SOCK_REPLACE_HANDLE |
962955c5 JR |
3053 | /* now replace handle to NUL with our socket handle */ |
3054 | CloseHandle ((HANDLE) _get_osfhandle (fd)); | |
3055 | _free_osfhnd (fd); | |
3056 | _set_osfhnd (fd, s); | |
3057 | /* setmode (fd, _O_BINARY); */ | |
480b0c5b | 3058 | #else |
962955c5 JR |
3059 | /* Make a non-inheritable copy of the socket handle. Note |
3060 | that it is possible that sockets aren't actually kernel | |
3061 | handles, which appears to be the case on Windows 9x when | |
3062 | the MS Proxy winsock client is installed. */ | |
3063 | { | |
3064 | /* Apparently there is a bug in NT 3.51 with some service | |
3065 | packs, which prevents using DuplicateHandle to make a | |
3066 | socket handle non-inheritable (causes WSACleanup to | |
3067 | hang). The work-around is to use SetHandleInformation | |
3068 | instead if it is available and implemented. */ | |
3069 | if (pfn_SetHandleInformation) | |
480b0c5b | 3070 | { |
962955c5 JR |
3071 | pfn_SetHandleInformation ((HANDLE) s, HANDLE_FLAG_INHERIT, 0); |
3072 | } | |
3073 | else | |
3074 | { | |
3075 | HANDLE parent = GetCurrentProcess (); | |
3076 | HANDLE new_s = INVALID_HANDLE_VALUE; | |
3077 | ||
3078 | if (DuplicateHandle (parent, | |
3079 | (HANDLE) s, | |
3080 | parent, | |
3081 | &new_s, | |
3082 | 0, | |
3083 | FALSE, | |
3084 | DUPLICATE_SAME_ACCESS)) | |
f1614061 | 3085 | { |
962955c5 JR |
3086 | /* It is possible that DuplicateHandle succeeds even |
3087 | though the socket wasn't really a kernel handle, | |
3088 | because a real handle has the same value. So | |
3089 | test whether the new handle really is a socket. */ | |
3090 | long nonblocking = 0; | |
3091 | if (pfn_ioctlsocket ((SOCKET) new_s, FIONBIO, &nonblocking) == 0) | |
ca149beb | 3092 | { |
962955c5 JR |
3093 | pfn_closesocket (s); |
3094 | s = (SOCKET) new_s; | |
3095 | } | |
3096 | else | |
3097 | { | |
3098 | CloseHandle (new_s); | |
3099 | } | |
177c0ea7 | 3100 | } |
480b0c5b | 3101 | } |
962955c5 JR |
3102 | } |
3103 | fd_info[fd].hnd = (HANDLE) s; | |
480b0c5b GV |
3104 | #endif |
3105 | ||
962955c5 JR |
3106 | /* set our own internal flags */ |
3107 | fd_info[fd].flags = FILE_SOCKET | FILE_BINARY | FILE_READ | FILE_WRITE; | |
480b0c5b | 3108 | |
962955c5 JR |
3109 | cp = new_child (); |
3110 | if (cp) | |
3111 | { | |
3112 | cp->fd = fd; | |
3113 | cp->status = STATUS_READ_ACKNOWLEDGED; | |
480b0c5b | 3114 | |
962955c5 JR |
3115 | /* attach child_process to fd_info */ |
3116 | if (fd_info[ fd ].cp != NULL) | |
3117 | { | |
3118 | DebPrint (("sys_socket: fd_info[%d] apparently in use!\n", fd)); | |
3119 | abort (); | |
480b0c5b GV |
3120 | } |
3121 | ||
962955c5 JR |
3122 | fd_info[ fd ].cp = cp; |
3123 | ||
3124 | /* success! */ | |
3125 | winsock_inuse++; /* count open sockets */ | |
3126 | return fd; | |
480b0c5b | 3127 | } |
480b0c5b | 3128 | |
962955c5 JR |
3129 | /* clean up */ |
3130 | _close (fd); | |
3131 | } | |
3132 | pfn_closesocket (s); | |
3133 | h_errno = EMFILE; | |
480b0c5b GV |
3134 | return -1; |
3135 | } | |
3136 | ||
3137 | ||
3138 | int | |
3139 | sys_bind (int s, const struct sockaddr * addr, int namelen) | |
3140 | { | |
f249a012 | 3141 | if (winsock_lib == NULL) |
480b0c5b GV |
3142 | { |
3143 | h_errno = ENOTSOCK; | |
3144 | return SOCKET_ERROR; | |
3145 | } | |
3146 | ||
3147 | check_errno (); | |
3148 | if (fd_info[s].flags & FILE_SOCKET) | |
3149 | { | |
3150 | int rc = pfn_bind (SOCK_HANDLE (s), addr, namelen); | |
3151 | if (rc == SOCKET_ERROR) | |
3152 | set_errno (); | |
3153 | return rc; | |
3154 | } | |
3155 | h_errno = ENOTSOCK; | |
3156 | return SOCKET_ERROR; | |
3157 | } | |
3158 | ||
3159 | ||
3160 | int | |
3161 | sys_connect (int s, const struct sockaddr * name, int namelen) | |
3162 | { | |
f249a012 | 3163 | if (winsock_lib == NULL) |
480b0c5b GV |
3164 | { |
3165 | h_errno = ENOTSOCK; | |
3166 | return SOCKET_ERROR; | |
3167 | } | |
3168 | ||
3169 | check_errno (); | |
3170 | if (fd_info[s].flags & FILE_SOCKET) | |
3171 | { | |
3172 | int rc = pfn_connect (SOCK_HANDLE (s), name, namelen); | |
3173 | if (rc == SOCKET_ERROR) | |
3174 | set_errno (); | |
3175 | return rc; | |
3176 | } | |
3177 | h_errno = ENOTSOCK; | |
3178 | return SOCKET_ERROR; | |
3179 | } | |
3180 | ||
3181 | u_short | |
3182 | sys_htons (u_short hostshort) | |
3183 | { | |
f249a012 | 3184 | return (winsock_lib != NULL) ? |
480b0c5b GV |
3185 | pfn_htons (hostshort) : hostshort; |
3186 | } | |
3187 | ||
3188 | u_short | |
3189 | sys_ntohs (u_short netshort) | |
3190 | { | |
f249a012 | 3191 | return (winsock_lib != NULL) ? |
480b0c5b GV |
3192 | pfn_ntohs (netshort) : netshort; |
3193 | } | |
3194 | ||
3195 | unsigned long | |
3196 | sys_inet_addr (const char * cp) | |
3197 | { | |
f249a012 | 3198 | return (winsock_lib != NULL) ? |
480b0c5b GV |
3199 | pfn_inet_addr (cp) : INADDR_NONE; |
3200 | } | |
3201 | ||
3202 | int | |
3203 | sys_gethostname (char * name, int namelen) | |
3204 | { | |
f249a012 | 3205 | if (winsock_lib != NULL) |
480b0c5b GV |
3206 | return pfn_gethostname (name, namelen); |
3207 | ||
3208 | if (namelen > MAX_COMPUTERNAME_LENGTH) | |
a302c7ae | 3209 | return !GetComputerName (name, (DWORD *)&namelen); |
480b0c5b GV |
3210 | |
3211 | h_errno = EFAULT; | |
3212 | return SOCKET_ERROR; | |
3213 | } | |
3214 | ||
3215 | struct hostent * | |
3216 | sys_gethostbyname(const char * name) | |
3217 | { | |
3218 | struct hostent * host; | |
3219 | ||
f249a012 | 3220 | if (winsock_lib == NULL) |
480b0c5b GV |
3221 | { |
3222 | h_errno = ENETDOWN; | |
3223 | return NULL; | |
3224 | } | |
3225 | ||
3226 | check_errno (); | |
3227 | host = pfn_gethostbyname (name); | |
3228 | if (!host) | |
3229 | set_errno (); | |
3230 | return host; | |
3231 | } | |
3232 | ||
3233 | struct servent * | |
3234 | sys_getservbyname(const char * name, const char * proto) | |
3235 | { | |
3236 | struct servent * serv; | |
3237 | ||
f249a012 | 3238 | if (winsock_lib == NULL) |
480b0c5b GV |
3239 | { |
3240 | h_errno = ENETDOWN; | |
3241 | return NULL; | |
3242 | } | |
3243 | ||
3244 | check_errno (); | |
3245 | serv = pfn_getservbyname (name, proto); | |
3246 | if (!serv) | |
3247 | set_errno (); | |
3248 | return serv; | |
3249 | } | |
3250 | ||
ecd270eb JR |
3251 | int |
3252 | sys_getpeername (int s, struct sockaddr *addr, int * namelen) | |
3253 | { | |
3254 | if (winsock_lib == NULL) | |
3255 | { | |
3256 | h_errno = ENETDOWN; | |
3257 | return SOCKET_ERROR; | |
3258 | } | |
3259 | ||
3260 | check_errno (); | |
3261 | if (fd_info[s].flags & FILE_SOCKET) | |
3262 | { | |
3263 | int rc = pfn_getpeername (SOCK_HANDLE (s), addr, namelen); | |
3264 | if (rc == SOCKET_ERROR) | |
3265 | set_errno (); | |
3266 | return rc; | |
3267 | } | |
3268 | h_errno = ENOTSOCK; | |
3269 | return SOCKET_ERROR; | |
3270 | } | |
3271 | ||
3272 | ||
380961a6 GV |
3273 | int |
3274 | sys_shutdown (int s, int how) | |
3275 | { | |
380961a6 GV |
3276 | if (winsock_lib == NULL) |
3277 | { | |
3278 | h_errno = ENETDOWN; | |
3279 | return SOCKET_ERROR; | |
3280 | } | |
3281 | ||
3282 | check_errno (); | |
3283 | if (fd_info[s].flags & FILE_SOCKET) | |
3284 | { | |
3285 | int rc = pfn_shutdown (SOCK_HANDLE (s), how); | |
962955c5 JR |
3286 | if (rc == SOCKET_ERROR) |
3287 | set_errno (); | |
3288 | return rc; | |
3289 | } | |
3290 | h_errno = ENOTSOCK; | |
3291 | return SOCKET_ERROR; | |
3292 | } | |
3293 | ||
3294 | int | |
a5a389bb | 3295 | sys_setsockopt (int s, int level, int optname, const void * optval, int optlen) |
962955c5 JR |
3296 | { |
3297 | if (winsock_lib == NULL) | |
3298 | { | |
3299 | h_errno = ENETDOWN; | |
3300 | return SOCKET_ERROR; | |
3301 | } | |
3302 | ||
3303 | check_errno (); | |
3304 | if (fd_info[s].flags & FILE_SOCKET) | |
3305 | { | |
3306 | int rc = pfn_setsockopt (SOCK_HANDLE (s), level, optname, | |
a5a389bb | 3307 | (const char *)optval, optlen); |
962955c5 JR |
3308 | if (rc == SOCKET_ERROR) |
3309 | set_errno (); | |
3310 | return rc; | |
3311 | } | |
3312 | h_errno = ENOTSOCK; | |
177c0ea7 | 3313 | return SOCKET_ERROR; |
962955c5 JR |
3314 | } |
3315 | ||
3316 | int | |
3317 | sys_listen (int s, int backlog) | |
3318 | { | |
3319 | if (winsock_lib == NULL) | |
3320 | { | |
3321 | h_errno = ENETDOWN; | |
3322 | return SOCKET_ERROR; | |
3323 | } | |
3324 | ||
3325 | check_errno (); | |
3326 | if (fd_info[s].flags & FILE_SOCKET) | |
3327 | { | |
3328 | int rc = pfn_listen (SOCK_HANDLE (s), backlog); | |
3329 | if (rc == SOCKET_ERROR) | |
3330 | set_errno (); | |
26fb7bc4 | 3331 | else |
64570b36 | 3332 | fd_info[s].flags |= FILE_LISTEN; |
962955c5 JR |
3333 | return rc; |
3334 | } | |
3335 | h_errno = ENOTSOCK; | |
177c0ea7 | 3336 | return SOCKET_ERROR; |
962955c5 JR |
3337 | } |
3338 | ||
3339 | int | |
3340 | sys_getsockname (int s, struct sockaddr * name, int * namelen) | |
3341 | { | |
3342 | if (winsock_lib == NULL) | |
3343 | { | |
3344 | h_errno = ENETDOWN; | |
3345 | return SOCKET_ERROR; | |
3346 | } | |
3347 | ||
3348 | check_errno (); | |
3349 | if (fd_info[s].flags & FILE_SOCKET) | |
3350 | { | |
3351 | int rc = pfn_getsockname (SOCK_HANDLE (s), name, namelen); | |
3352 | if (rc == SOCKET_ERROR) | |
3353 | set_errno (); | |
3354 | return rc; | |
3355 | } | |
3356 | h_errno = ENOTSOCK; | |
177c0ea7 | 3357 | return SOCKET_ERROR; |
962955c5 JR |
3358 | } |
3359 | ||
3360 | int | |
3361 | sys_accept (int s, struct sockaddr * addr, int * addrlen) | |
3362 | { | |
3363 | if (winsock_lib == NULL) | |
3364 | { | |
3365 | h_errno = ENETDOWN; | |
3366 | return -1; | |
3367 | } | |
3368 | ||
3369 | check_errno (); | |
26fb7bc4 | 3370 | if (fd_info[s].flags & FILE_LISTEN) |
962955c5 | 3371 | { |
a0ad1860 | 3372 | SOCKET t = pfn_accept (SOCK_HANDLE (s), addr, addrlen); |
64570b36 KS |
3373 | int fd = -1; |
3374 | if (t == INVALID_SOCKET) | |
3375 | set_errno (); | |
3376 | else | |
3377 | fd = socket_to_fd (t); | |
962955c5 | 3378 | |
64570b36 KS |
3379 | fd_info[s].cp->status = STATUS_READ_ACKNOWLEDGED; |
3380 | ResetEvent (fd_info[s].cp->char_avail); | |
3381 | return fd; | |
962955c5 JR |
3382 | } |
3383 | h_errno = ENOTSOCK; | |
3384 | return -1; | |
3385 | } | |
3386 | ||
3387 | int | |
3388 | sys_recvfrom (int s, char * buf, int len, int flags, | |
3389 | struct sockaddr * from, int * fromlen) | |
3390 | { | |
3391 | if (winsock_lib == NULL) | |
3392 | { | |
3393 | h_errno = ENETDOWN; | |
3394 | return SOCKET_ERROR; | |
3395 | } | |
3396 | ||
3397 | check_errno (); | |
3398 | if (fd_info[s].flags & FILE_SOCKET) | |
3399 | { | |
3400 | int rc = pfn_recvfrom (SOCK_HANDLE (s), buf, len, flags, from, fromlen); | |
3401 | if (rc == SOCKET_ERROR) | |
3402 | set_errno (); | |
3403 | return rc; | |
3404 | } | |
3405 | h_errno = ENOTSOCK; | |
3406 | return SOCKET_ERROR; | |
3407 | } | |
3408 | ||
3409 | int | |
3410 | sys_sendto (int s, const char * buf, int len, int flags, | |
3411 | const struct sockaddr * to, int tolen) | |
3412 | { | |
3413 | if (winsock_lib == NULL) | |
3414 | { | |
3415 | h_errno = ENETDOWN; | |
3416 | return SOCKET_ERROR; | |
3417 | } | |
3418 | ||
3419 | check_errno (); | |
3420 | if (fd_info[s].flags & FILE_SOCKET) | |
3421 | { | |
3422 | int rc = pfn_sendto (SOCK_HANDLE (s), buf, len, flags, to, tolen); | |
380961a6 GV |
3423 | if (rc == SOCKET_ERROR) |
3424 | set_errno (); | |
3425 | return rc; | |
3426 | } | |
3427 | h_errno = ENOTSOCK; | |
3428 | return SOCKET_ERROR; | |
3429 | } | |
3430 | ||
ecd270eb JR |
3431 | /* Windows does not have an fcntl function. Provide an implementation |
3432 | solely for making sockets non-blocking. */ | |
3433 | int | |
3434 | fcntl (int s, int cmd, int options) | |
3435 | { | |
3436 | if (winsock_lib == NULL) | |
3437 | { | |
3438 | h_errno = ENETDOWN; | |
3439 | return -1; | |
3440 | } | |
3441 | ||
3442 | check_errno (); | |
3443 | if (fd_info[s].flags & FILE_SOCKET) | |
3444 | { | |
3445 | if (cmd == F_SETFL && options == O_NDELAY) | |
3446 | { | |
3447 | unsigned long nblock = 1; | |
3448 | int rc = pfn_ioctlsocket (SOCK_HANDLE (s), FIONBIO, &nblock); | |
3449 | if (rc == SOCKET_ERROR) | |
3450 | set_errno(); | |
3451 | /* Keep track of the fact that we set this to non-blocking. */ | |
3452 | fd_info[s].flags |= FILE_NDELAY; | |
3453 | return rc; | |
3454 | } | |
3455 | else | |
3456 | { | |
3457 | h_errno = EINVAL; | |
3458 | return SOCKET_ERROR; | |
3459 | } | |
3460 | } | |
3461 | h_errno = ENOTSOCK; | |
3462 | return SOCKET_ERROR; | |
3463 | } | |
3464 | ||
480b0c5b GV |
3465 | #endif /* HAVE_SOCKETS */ |
3466 | ||
3467 | ||
3468 | /* Shadow main io functions: we need to handle pipes and sockets more | |
3469 | intelligently, and implement non-blocking mode as well. */ | |
3470 | ||
3471 | int | |
3472 | sys_close (int fd) | |
3473 | { | |
3474 | int rc; | |
3475 | ||
7559f399 | 3476 | if (fd < 0) |
480b0c5b GV |
3477 | { |
3478 | errno = EBADF; | |
3479 | return -1; | |
3480 | } | |
3481 | ||
7559f399 | 3482 | if (fd < MAXDESC && fd_info[fd].cp) |
480b0c5b GV |
3483 | { |
3484 | child_process * cp = fd_info[fd].cp; | |
3485 | ||
3486 | fd_info[fd].cp = NULL; | |
3487 | ||
3488 | if (CHILD_ACTIVE (cp)) | |
3489 | { | |
3490 | /* if last descriptor to active child_process then cleanup */ | |
3491 | int i; | |
3492 | for (i = 0; i < MAXDESC; i++) | |
3493 | { | |
3494 | if (i == fd) | |
3495 | continue; | |
3496 | if (fd_info[i].cp == cp) | |
3497 | break; | |
3498 | } | |
3499 | if (i == MAXDESC) | |
3500 | { | |
f249a012 | 3501 | #ifdef HAVE_SOCKETS |
480b0c5b GV |
3502 | if (fd_info[fd].flags & FILE_SOCKET) |
3503 | { | |
f249a012 RS |
3504 | #ifndef SOCK_REPLACE_HANDLE |
3505 | if (winsock_lib == NULL) abort (); | |
480b0c5b GV |
3506 | |
3507 | pfn_shutdown (SOCK_HANDLE (fd), 2); | |
3508 | rc = pfn_closesocket (SOCK_HANDLE (fd)); | |
f249a012 RS |
3509 | #endif |
3510 | winsock_inuse--; /* count open sockets */ | |
480b0c5b GV |
3511 | } |
3512 | #endif | |
3513 | delete_child (cp); | |
3514 | } | |
3515 | } | |
3516 | } | |
3517 | ||
3518 | /* Note that sockets do not need special treatment here (at least on | |
e9e23e23 | 3519 | NT and Windows 95 using the standard tcp/ip stacks) - it appears that |
480b0c5b GV |
3520 | closesocket is equivalent to CloseHandle, which is to be expected |
3521 | because socket handles are fully fledged kernel handles. */ | |
3522 | rc = _close (fd); | |
3523 | ||
7559f399 | 3524 | if (rc == 0 && fd < MAXDESC) |
480b0c5b GV |
3525 | fd_info[fd].flags = 0; |
3526 | ||
3527 | return rc; | |
3528 | } | |
3529 | ||
3530 | int | |
3531 | sys_dup (int fd) | |
3532 | { | |
3533 | int new_fd; | |
3534 | ||
3535 | new_fd = _dup (fd); | |
7559f399 | 3536 | if (new_fd >= 0 && new_fd < MAXDESC) |
480b0c5b GV |
3537 | { |
3538 | /* duplicate our internal info as well */ | |
3539 | fd_info[new_fd] = fd_info[fd]; | |
3540 | } | |
3541 | return new_fd; | |
3542 | } | |
3543 | ||
3544 | ||
3545 | int | |
3546 | sys_dup2 (int src, int dst) | |
3547 | { | |
3548 | int rc; | |
3549 | ||
3550 | if (dst < 0 || dst >= MAXDESC) | |
3551 | { | |
3552 | errno = EBADF; | |
3553 | return -1; | |
3554 | } | |
3555 | ||
3556 | /* make sure we close the destination first if it's a pipe or socket */ | |
3557 | if (src != dst && fd_info[dst].flags != 0) | |
3558 | sys_close (dst); | |
177c0ea7 | 3559 | |
480b0c5b GV |
3560 | rc = _dup2 (src, dst); |
3561 | if (rc == 0) | |
3562 | { | |
3563 | /* duplicate our internal info as well */ | |
3564 | fd_info[dst] = fd_info[src]; | |
3565 | } | |
3566 | return rc; | |
3567 | } | |
3568 | ||
480b0c5b GV |
3569 | /* Unix pipe() has only one arg */ |
3570 | int | |
3571 | sys_pipe (int * phandles) | |
3572 | { | |
3573 | int rc; | |
3574 | unsigned flags; | |
480b0c5b | 3575 | |
76b3903d GV |
3576 | /* make pipe handles non-inheritable; when we spawn a child, we |
3577 | replace the relevant handle with an inheritable one. Also put | |
3578 | pipes into binary mode; we will do text mode translation ourselves | |
3579 | if required. */ | |
3580 | rc = _pipe (phandles, 0, _O_NOINHERIT | _O_BINARY); | |
480b0c5b GV |
3581 | |
3582 | if (rc == 0) | |
3583 | { | |
cb72110d JR |
3584 | /* Protect against overflow, since Windows can open more handles than |
3585 | our fd_info array has room for. */ | |
3586 | if (phandles[0] >= MAXDESC || phandles[1] >= MAXDESC) | |
3587 | { | |
3588 | _close (phandles[0]); | |
3589 | _close (phandles[1]); | |
3590 | rc = -1; | |
3591 | } | |
3592 | else | |
3593 | { | |
3594 | flags = FILE_PIPE | FILE_READ | FILE_BINARY; | |
3595 | fd_info[phandles[0]].flags = flags; | |
480b0c5b | 3596 | |
cb72110d JR |
3597 | flags = FILE_PIPE | FILE_WRITE | FILE_BINARY; |
3598 | fd_info[phandles[1]].flags = flags; | |
3599 | } | |
480b0c5b GV |
3600 | } |
3601 | ||
3602 | return rc; | |
3603 | } | |
3604 | ||
f7554349 | 3605 | /* From ntproc.c */ |
78806724 | 3606 | extern int w32_pipe_read_delay; |
f7554349 | 3607 | |
480b0c5b GV |
3608 | /* Function to do blocking read of one byte, needed to implement |
3609 | select. It is only allowed on sockets and pipes. */ | |
3610 | int | |
3611 | _sys_read_ahead (int fd) | |
3612 | { | |
3613 | child_process * cp; | |
3614 | int rc; | |
3615 | ||
3616 | if (fd < 0 || fd >= MAXDESC) | |
3617 | return STATUS_READ_ERROR; | |
3618 | ||
3619 | cp = fd_info[fd].cp; | |
3620 | ||
3621 | if (cp == NULL || cp->fd != fd || cp->status != STATUS_READ_READY) | |
3622 | return STATUS_READ_ERROR; | |
3623 | ||
3624 | if ((fd_info[fd].flags & (FILE_PIPE | FILE_SOCKET)) == 0 | |
3625 | || (fd_info[fd].flags & FILE_READ) == 0) | |
3626 | { | |
3627 | DebPrint (("_sys_read_ahead: internal error: fd %d is not a pipe or socket!\n", fd)); | |
3628 | abort (); | |
3629 | } | |
177c0ea7 | 3630 | |
480b0c5b | 3631 | cp->status = STATUS_READ_IN_PROGRESS; |
177c0ea7 | 3632 | |
480b0c5b | 3633 | if (fd_info[fd].flags & FILE_PIPE) |
f7554349 | 3634 | { |
f7554349 KH |
3635 | rc = _read (fd, &cp->chr, sizeof (char)); |
3636 | ||
3637 | /* Give subprocess time to buffer some more output for us before | |
e9e23e23 | 3638 | reporting that input is available; we need this because Windows 95 |
f7554349 KH |
3639 | connects DOS programs to pipes by making the pipe appear to be |
3640 | the normal console stdout - as a result most DOS programs will | |
3641 | write to stdout without buffering, ie. one character at a | |
fbd6baed | 3642 | time. Even some W32 programs do this - "dir" in a command |
f7554349 KH |
3643 | shell on NT is very slow if we don't do this. */ |
3644 | if (rc > 0) | |
3645 | { | |
78806724 | 3646 | int wait = w32_pipe_read_delay; |
f7554349 KH |
3647 | |
3648 | if (wait > 0) | |
3649 | Sleep (wait); | |
3650 | else if (wait < 0) | |
3651 | while (++wait <= 0) | |
3652 | /* Yield remainder of our time slice, effectively giving a | |
3653 | temporary priority boost to the child process. */ | |
3654 | Sleep (0); | |
3655 | } | |
3656 | } | |
480b0c5b GV |
3657 | #ifdef HAVE_SOCKETS |
3658 | else if (fd_info[fd].flags & FILE_SOCKET) | |
ecd270eb JR |
3659 | { |
3660 | unsigned long nblock = 0; | |
3661 | /* We always want this to block, so temporarily disable NDELAY. */ | |
3662 | if (fd_info[fd].flags & FILE_NDELAY) | |
3663 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONBIO, &nblock); | |
3664 | ||
3665 | rc = pfn_recv (SOCK_HANDLE (fd), &cp->chr, sizeof (char), 0); | |
3666 | ||
3667 | if (fd_info[fd].flags & FILE_NDELAY) | |
3668 | { | |
3669 | nblock = 1; | |
3670 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONBIO, &nblock); | |
3671 | } | |
3672 | } | |
480b0c5b | 3673 | #endif |
177c0ea7 | 3674 | |
480b0c5b GV |
3675 | if (rc == sizeof (char)) |
3676 | cp->status = STATUS_READ_SUCCEEDED; | |
3677 | else | |
3678 | cp->status = STATUS_READ_FAILED; | |
3679 | ||
3680 | return cp->status; | |
3681 | } | |
3682 | ||
9bfb11f9 KS |
3683 | int |
3684 | _sys_wait_accept (int fd) | |
64570b36 KS |
3685 | { |
3686 | HANDLE hEv; | |
3687 | child_process * cp; | |
3688 | int rc; | |
3689 | ||
3690 | if (fd < 0 || fd >= MAXDESC) | |
3691 | return STATUS_READ_ERROR; | |
3692 | ||
3693 | cp = fd_info[fd].cp; | |
3694 | ||
3695 | if (cp == NULL || cp->fd != fd || cp->status != STATUS_READ_READY) | |
3696 | return STATUS_READ_ERROR; | |
3697 | ||
3698 | cp->status = STATUS_READ_FAILED; | |
3699 | ||
3700 | hEv = pfn_WSACreateEvent (); | |
3701 | rc = pfn_WSAEventSelect (SOCK_HANDLE (fd), hEv, FD_ACCEPT); | |
3702 | if (rc != SOCKET_ERROR) | |
3703 | { | |
3704 | rc = WaitForSingleObject (hEv, INFINITE); | |
3705 | pfn_WSAEventSelect (SOCK_HANDLE (fd), NULL, 0); | |
64570b36 KS |
3706 | if (rc == WAIT_OBJECT_0) |
3707 | cp->status = STATUS_READ_SUCCEEDED; | |
3708 | } | |
7046f191 | 3709 | pfn_WSACloseEvent (hEv); |
64570b36 KS |
3710 | |
3711 | return cp->status; | |
3712 | } | |
3713 | ||
480b0c5b GV |
3714 | int |
3715 | sys_read (int fd, char * buffer, unsigned int count) | |
3716 | { | |
3717 | int nchars; | |
480b0c5b GV |
3718 | int to_read; |
3719 | DWORD waiting; | |
76b3903d | 3720 | char * orig_buffer = buffer; |
480b0c5b | 3721 | |
7559f399 | 3722 | if (fd < 0) |
480b0c5b GV |
3723 | { |
3724 | errno = EBADF; | |
3725 | return -1; | |
3726 | } | |
3727 | ||
7559f399 | 3728 | if (fd < MAXDESC && fd_info[fd].flags & (FILE_PIPE | FILE_SOCKET)) |
480b0c5b GV |
3729 | { |
3730 | child_process *cp = fd_info[fd].cp; | |
3731 | ||
3732 | if ((fd_info[fd].flags & FILE_READ) == 0) | |
3733 | { | |
3734 | errno = EBADF; | |
3735 | return -1; | |
3736 | } | |
3737 | ||
76b3903d GV |
3738 | nchars = 0; |
3739 | ||
3740 | /* re-read CR carried over from last read */ | |
3741 | if (fd_info[fd].flags & FILE_LAST_CR) | |
3742 | { | |
3743 | if (fd_info[fd].flags & FILE_BINARY) abort (); | |
3744 | *buffer++ = 0x0d; | |
3745 | count--; | |
3746 | nchars++; | |
f52eb3ef | 3747 | fd_info[fd].flags &= ~FILE_LAST_CR; |
76b3903d GV |
3748 | } |
3749 | ||
480b0c5b GV |
3750 | /* presence of a child_process structure means we are operating in |
3751 | non-blocking mode - otherwise we just call _read directly. | |
3752 | Note that the child_process structure might be missing because | |
3753 | reap_subprocess has been called; in this case the pipe is | |
3754 | already broken, so calling _read on it is okay. */ | |
3755 | if (cp) | |
3756 | { | |
3757 | int current_status = cp->status; | |
3758 | ||
3759 | switch (current_status) | |
3760 | { | |
3761 | case STATUS_READ_FAILED: | |
3762 | case STATUS_READ_ERROR: | |
f52eb3ef GV |
3763 | /* report normal EOF if nothing in buffer */ |
3764 | if (nchars <= 0) | |
3765 | fd_info[fd].flags |= FILE_AT_EOF; | |
3766 | return nchars; | |
480b0c5b GV |
3767 | |
3768 | case STATUS_READ_READY: | |
3769 | case STATUS_READ_IN_PROGRESS: | |
3770 | DebPrint (("sys_read called when read is in progress\n")); | |
3771 | errno = EWOULDBLOCK; | |
3772 | return -1; | |
3773 | ||
3774 | case STATUS_READ_SUCCEEDED: | |
3775 | /* consume read-ahead char */ | |
3776 | *buffer++ = cp->chr; | |
3777 | count--; | |
76b3903d | 3778 | nchars++; |
480b0c5b GV |
3779 | cp->status = STATUS_READ_ACKNOWLEDGED; |
3780 | ResetEvent (cp->char_avail); | |
3781 | ||
3782 | case STATUS_READ_ACKNOWLEDGED: | |
3783 | break; | |
3784 | ||
3785 | default: | |
3786 | DebPrint (("sys_read: bad status %d\n", current_status)); | |
3787 | errno = EBADF; | |
3788 | return -1; | |
3789 | } | |
3790 | ||
3791 | if (fd_info[fd].flags & FILE_PIPE) | |
3792 | { | |
3793 | PeekNamedPipe ((HANDLE) _get_osfhandle (fd), NULL, 0, NULL, &waiting, NULL); | |
3794 | to_read = min (waiting, (DWORD) count); | |
f52eb3ef GV |
3795 | |
3796 | if (to_read > 0) | |
3797 | nchars += _read (fd, buffer, to_read); | |
480b0c5b GV |
3798 | } |
3799 | #ifdef HAVE_SOCKETS | |
3800 | else /* FILE_SOCKET */ | |
3801 | { | |
f249a012 | 3802 | if (winsock_lib == NULL) abort (); |
480b0c5b GV |
3803 | |
3804 | /* do the equivalent of a non-blocking read */ | |
3805 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONREAD, &waiting); | |
76b3903d | 3806 | if (waiting == 0 && nchars == 0) |
480b0c5b GV |
3807 | { |
3808 | h_errno = errno = EWOULDBLOCK; | |
3809 | return -1; | |
3810 | } | |
3811 | ||
480b0c5b GV |
3812 | if (waiting) |
3813 | { | |
3814 | /* always use binary mode for sockets */ | |
76b3903d GV |
3815 | int res = pfn_recv (SOCK_HANDLE (fd), buffer, count, 0); |
3816 | if (res == SOCKET_ERROR) | |
480b0c5b GV |
3817 | { |
3818 | DebPrint(("sys_read.recv failed with error %d on socket %ld\n", | |
3819 | pfn_WSAGetLastError (), SOCK_HANDLE (fd))); | |
76b3903d GV |
3820 | set_errno (); |
3821 | return -1; | |
480b0c5b | 3822 | } |
76b3903d | 3823 | nchars += res; |
480b0c5b GV |
3824 | } |
3825 | } | |
3826 | #endif | |
3827 | } | |
3828 | else | |
f52eb3ef GV |
3829 | { |
3830 | int nread = _read (fd, buffer, count); | |
3831 | if (nread >= 0) | |
3832 | nchars += nread; | |
3833 | else if (nchars == 0) | |
3834 | nchars = nread; | |
3835 | } | |
76b3903d | 3836 | |
f52eb3ef GV |
3837 | if (nchars <= 0) |
3838 | fd_info[fd].flags |= FILE_AT_EOF; | |
76b3903d | 3839 | /* Perform text mode translation if required. */ |
f52eb3ef | 3840 | else if ((fd_info[fd].flags & FILE_BINARY) == 0) |
76b3903d GV |
3841 | { |
3842 | nchars = crlf_to_lf (nchars, orig_buffer); | |
3843 | /* If buffer contains only CR, return that. To be absolutely | |
3844 | sure we should attempt to read the next char, but in | |
3845 | practice a CR to be followed by LF would not appear by | |
3846 | itself in the buffer. */ | |
3847 | if (nchars > 1 && orig_buffer[nchars - 1] == 0x0d) | |
3848 | { | |
3849 | fd_info[fd].flags |= FILE_LAST_CR; | |
3850 | nchars--; | |
3851 | } | |
76b3903d | 3852 | } |
480b0c5b GV |
3853 | } |
3854 | else | |
3855 | nchars = _read (fd, buffer, count); | |
3856 | ||
76b3903d | 3857 | return nchars; |
480b0c5b GV |
3858 | } |
3859 | ||
3860 | /* For now, don't bother with a non-blocking mode */ | |
3861 | int | |
3862 | sys_write (int fd, const void * buffer, unsigned int count) | |
3863 | { | |
3864 | int nchars; | |
3865 | ||
7559f399 | 3866 | if (fd < 0) |
480b0c5b GV |
3867 | { |
3868 | errno = EBADF; | |
3869 | return -1; | |
3870 | } | |
3871 | ||
7559f399 | 3872 | if (fd < MAXDESC && fd_info[fd].flags & (FILE_PIPE | FILE_SOCKET)) |
76b3903d GV |
3873 | { |
3874 | if ((fd_info[fd].flags & FILE_WRITE) == 0) | |
3875 | { | |
3876 | errno = EBADF; | |
3877 | return -1; | |
3878 | } | |
3879 | ||
3880 | /* Perform text mode translation if required. */ | |
3881 | if ((fd_info[fd].flags & FILE_BINARY) == 0) | |
3882 | { | |
3883 | char * tmpbuf = alloca (count * 2); | |
3884 | unsigned char * src = (void *)buffer; | |
3885 | unsigned char * dst = tmpbuf; | |
3886 | int nbytes = count; | |
3887 | ||
3888 | while (1) | |
3889 | { | |
3890 | unsigned char *next; | |
3891 | /* copy next line or remaining bytes */ | |
3892 | next = _memccpy (dst, src, '\n', nbytes); | |
3893 | if (next) | |
3894 | { | |
3895 | /* copied one line ending with '\n' */ | |
3896 | int copied = next - dst; | |
3897 | nbytes -= copied; | |
3898 | src += copied; | |
3899 | /* insert '\r' before '\n' */ | |
3900 | next[-1] = '\r'; | |
3901 | next[0] = '\n'; | |
3902 | dst = next + 1; | |
3903 | count++; | |
177c0ea7 | 3904 | } |
76b3903d GV |
3905 | else |
3906 | /* copied remaining partial line -> now finished */ | |
3907 | break; | |
3908 | } | |
3909 | buffer = tmpbuf; | |
3910 | } | |
3911 | } | |
3912 | ||
480b0c5b | 3913 | #ifdef HAVE_SOCKETS |
7559f399 | 3914 | if (fd < MAXDESC && fd_info[fd].flags & FILE_SOCKET) |
480b0c5b | 3915 | { |
30a32e0e | 3916 | unsigned long nblock = 0; |
f249a012 | 3917 | if (winsock_lib == NULL) abort (); |
30a32e0e JR |
3918 | |
3919 | /* TODO: implement select() properly so non-blocking I/O works. */ | |
3920 | /* For now, make sure the write blocks. */ | |
3921 | if (fd_info[fd].flags & FILE_NDELAY) | |
3922 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONBIO, &nblock); | |
3923 | ||
480b0c5b | 3924 | nchars = pfn_send (SOCK_HANDLE (fd), buffer, count, 0); |
30a32e0e JR |
3925 | |
3926 | /* Set the socket back to non-blocking if it was before, | |
3927 | for other operations that support it. */ | |
3928 | if (fd_info[fd].flags & FILE_NDELAY) | |
3929 | { | |
3930 | nblock = 1; | |
3931 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONBIO, &nblock); | |
3932 | } | |
3933 | ||
480b0c5b GV |
3934 | if (nchars == SOCKET_ERROR) |
3935 | { | |
670773af | 3936 | DebPrint(("sys_write.send failed with error %d on socket %ld\n", |
480b0c5b GV |
3937 | pfn_WSAGetLastError (), SOCK_HANDLE (fd))); |
3938 | set_errno (); | |
3939 | } | |
3940 | } | |
3941 | else | |
3942 | #endif | |
3943 | nchars = _write (fd, buffer, count); | |
3944 | ||
3945 | return nchars; | |
3946 | } | |
3947 | ||
f52eb3ef GV |
3948 | static void |
3949 | check_windows_init_file () | |
3950 | { | |
3951 | extern int noninteractive, inhibit_window_system; | |
3952 | ||
3953 | /* A common indication that Emacs is not installed properly is when | |
3954 | it cannot find the Windows installation file. If this file does | |
3955 | not exist in the expected place, tell the user. */ | |
3956 | ||
177c0ea7 | 3957 | if (!noninteractive && !inhibit_window_system) |
d54abccd GV |
3958 | { |
3959 | extern Lisp_Object Vwindow_system, Vload_path, Qfile_exists_p; | |
a0b9c838 | 3960 | Lisp_Object objs[2]; |
96ef7d42 | 3961 | Lisp_Object full_load_path; |
d54abccd GV |
3962 | Lisp_Object init_file; |
3963 | int fd; | |
f52eb3ef | 3964 | |
a0b9c838 GV |
3965 | objs[0] = Vload_path; |
3966 | objs[1] = decode_env_path (0, (getenv ("EMACSLOADPATH"))); | |
3967 | full_load_path = Fappend (2, objs); | |
d54abccd | 3968 | init_file = build_string ("term/w32-win"); |
c50a2aa6 | 3969 | fd = openp (full_load_path, init_file, Fget_load_suffixes (), NULL, Qnil); |
177c0ea7 | 3970 | if (fd < 0) |
d54abccd | 3971 | { |
96ef7d42 | 3972 | Lisp_Object load_path_print = Fprin1_to_string (full_load_path, Qnil); |
d5db4077 KR |
3973 | char *init_file_name = SDATA (init_file); |
3974 | char *load_path = SDATA (load_path_print); | |
acc23b87 KS |
3975 | char *buffer = alloca (1024 |
3976 | + strlen (init_file_name) | |
3977 | + strlen (load_path)); | |
d54abccd | 3978 | |
177c0ea7 | 3979 | sprintf (buffer, |
d54abccd GV |
3980 | "The Emacs Windows initialization file \"%s.el\" " |
3981 | "could not be found in your Emacs installation. " | |
3982 | "Emacs checked the following directories for this file:\n" | |
3983 | "\n%s\n\n" | |
3984 | "When Emacs cannot find this file, it usually means that it " | |
3985 | "was not installed properly, or its distribution file was " | |
3986 | "not unpacked properly.\nSee the README.W32 file in the " | |
3987 | "top-level Emacs directory for more information.", | |
3988 | init_file_name, load_path); | |
3989 | MessageBox (NULL, | |
3990 | buffer, | |
3991 | "Emacs Abort Dialog", | |
3992 | MB_OK | MB_ICONEXCLAMATION | MB_TASKMODAL); | |
f52eb3ef GV |
3993 | /* Use the low-level Emacs abort. */ |
3994 | #undef abort | |
d54abccd GV |
3995 | abort (); |
3996 | } | |
3997 | else | |
3998 | { | |
a302c7ae | 3999 | _close (fd); |
d54abccd | 4000 | } |
f52eb3ef | 4001 | } |
f52eb3ef | 4002 | } |
480b0c5b GV |
4003 | |
4004 | void | |
4005 | term_ntproc () | |
4006 | { | |
4007 | #ifdef HAVE_SOCKETS | |
4008 | /* shutdown the socket interface if necessary */ | |
4009 | term_winsock (); | |
4010 | #endif | |
52c7f9ee JR |
4011 | |
4012 | term_w32select (); | |
480b0c5b GV |
4013 | } |
4014 | ||
4015 | void | |
4016 | init_ntproc () | |
4017 | { | |
4018 | #ifdef HAVE_SOCKETS | |
f249a012 RS |
4019 | /* Initialise the socket interface now if available and requested by |
4020 | the user by defining PRELOAD_WINSOCK; otherwise loading will be | |
fbd6baed | 4021 | delayed until open-network-stream is called (w32-has-winsock can |
f249a012 RS |
4022 | also be used to dynamically load or reload winsock). |
4023 | ||
4024 | Conveniently, init_environment is called before us, so | |
4025 | PRELOAD_WINSOCK can be set in the registry. */ | |
4026 | ||
4027 | /* Always initialize this correctly. */ | |
4028 | winsock_lib = NULL; | |
4029 | ||
4030 | if (getenv ("PRELOAD_WINSOCK") != NULL) | |
4031 | init_winsock (TRUE); | |
480b0c5b GV |
4032 | #endif |
4033 | ||
4034 | /* Initial preparation for subprocess support: replace our standard | |
4035 | handles with non-inheritable versions. */ | |
4036 | { | |
4037 | HANDLE parent; | |
4038 | HANDLE stdin_save = INVALID_HANDLE_VALUE; | |
4039 | HANDLE stdout_save = INVALID_HANDLE_VALUE; | |
4040 | HANDLE stderr_save = INVALID_HANDLE_VALUE; | |
4041 | ||
4042 | parent = GetCurrentProcess (); | |
4043 | ||
4044 | /* ignore errors when duplicating and closing; typically the | |
4045 | handles will be invalid when running as a gui program. */ | |
177c0ea7 JB |
4046 | DuplicateHandle (parent, |
4047 | GetStdHandle (STD_INPUT_HANDLE), | |
480b0c5b | 4048 | parent, |
177c0ea7 JB |
4049 | &stdin_save, |
4050 | 0, | |
4051 | FALSE, | |
480b0c5b | 4052 | DUPLICATE_SAME_ACCESS); |
177c0ea7 | 4053 | |
480b0c5b GV |
4054 | DuplicateHandle (parent, |
4055 | GetStdHandle (STD_OUTPUT_HANDLE), | |
4056 | parent, | |
4057 | &stdout_save, | |
4058 | 0, | |
4059 | FALSE, | |
4060 | DUPLICATE_SAME_ACCESS); | |
177c0ea7 | 4061 | |
480b0c5b GV |
4062 | DuplicateHandle (parent, |
4063 | GetStdHandle (STD_ERROR_HANDLE), | |
4064 | parent, | |
4065 | &stderr_save, | |
4066 | 0, | |
4067 | FALSE, | |
4068 | DUPLICATE_SAME_ACCESS); | |
177c0ea7 | 4069 | |
480b0c5b GV |
4070 | fclose (stdin); |
4071 | fclose (stdout); | |
4072 | fclose (stderr); | |
4073 | ||
4074 | if (stdin_save != INVALID_HANDLE_VALUE) | |
4075 | _open_osfhandle ((long) stdin_save, O_TEXT); | |
4076 | else | |
76b3903d GV |
4077 | _open ("nul", O_TEXT | O_NOINHERIT | O_RDONLY); |
4078 | _fdopen (0, "r"); | |
480b0c5b GV |
4079 | |
4080 | if (stdout_save != INVALID_HANDLE_VALUE) | |
4081 | _open_osfhandle ((long) stdout_save, O_TEXT); | |
4082 | else | |
76b3903d GV |
4083 | _open ("nul", O_TEXT | O_NOINHERIT | O_WRONLY); |
4084 | _fdopen (1, "w"); | |
480b0c5b GV |
4085 | |
4086 | if (stderr_save != INVALID_HANDLE_VALUE) | |
4087 | _open_osfhandle ((long) stderr_save, O_TEXT); | |
4088 | else | |
76b3903d GV |
4089 | _open ("nul", O_TEXT | O_NOINHERIT | O_WRONLY); |
4090 | _fdopen (2, "w"); | |
480b0c5b GV |
4091 | } |
4092 | ||
4093 | /* unfortunately, atexit depends on implementation of malloc */ | |
4094 | /* atexit (term_ntproc); */ | |
4095 | signal (SIGABRT, term_ntproc); | |
76b3903d GV |
4096 | |
4097 | /* determine which drives are fixed, for GetCachedVolumeInformation */ | |
4098 | { | |
4099 | /* GetDriveType must have trailing backslash. */ | |
4100 | char drive[] = "A:\\"; | |
4101 | ||
4102 | /* Loop over all possible drive letters */ | |
4103 | while (*drive <= 'Z') | |
4104 | { | |
4105 | /* Record if this drive letter refers to a fixed drive. */ | |
177c0ea7 | 4106 | fixed_drives[DRIVE_INDEX (*drive)] = |
76b3903d GV |
4107 | (GetDriveType (drive) == DRIVE_FIXED); |
4108 | ||
4109 | (*drive)++; | |
4110 | } | |
a302c7ae AI |
4111 | |
4112 | /* Reset the volume info cache. */ | |
4113 | volume_cache = NULL; | |
76b3903d | 4114 | } |
177c0ea7 | 4115 | |
d54abccd GV |
4116 | /* Check to see if Emacs has been installed correctly. */ |
4117 | check_windows_init_file (); | |
480b0c5b GV |
4118 | } |
4119 | ||
a8c3a596 JR |
4120 | /* |
4121 | shutdown_handler ensures that buffers' autosave files are | |
4122 | up to date when the user logs off, or the system shuts down. | |
4123 | */ | |
4124 | BOOL WINAPI shutdown_handler(DWORD type) | |
4125 | { | |
4126 | /* Ctrl-C and Ctrl-Break are already suppressed, so don't handle them. */ | |
4127 | if (type == CTRL_CLOSE_EVENT /* User closes console window. */ | |
4128 | || type == CTRL_LOGOFF_EVENT /* User logs off. */ | |
4129 | || type == CTRL_SHUTDOWN_EVENT) /* User shutsdown. */ | |
4130 | { | |
4131 | /* Shut down cleanly, making sure autosave files are up to date. */ | |
4132 | shut_down_emacs (0, 0, Qnil); | |
4133 | } | |
4134 | ||
7046f191 | 4135 | /* Allow other handlers to handle this signal. */ |
a8c3a596 JR |
4136 | return FALSE; |
4137 | } | |
4138 | ||
9785d95b BK |
4139 | /* |
4140 | globals_of_w32 is used to initialize those global variables that | |
4141 | must always be initialized on startup even when the global variable | |
4142 | initialized is non zero (see the function main in emacs.c). | |
4143 | */ | |
9bfb11f9 KS |
4144 | void |
4145 | globals_of_w32 () | |
9785d95b BK |
4146 | { |
4147 | g_b_init_is_windows_9x = 0; | |
4148 | g_b_init_open_process_token = 0; | |
4149 | g_b_init_get_token_information = 0; | |
4150 | g_b_init_lookup_account_sid = 0; | |
4151 | g_b_init_get_sid_identifier_authority = 0; | |
a8c3a596 JR |
4152 | /* The following sets a handler for shutdown notifications for |
4153 | console apps. This actually applies to Emacs in both console and | |
4154 | GUI modes, since we had to fool windows into thinking emacs is a | |
4155 | console application to get console mode to work. */ | |
4156 | SetConsoleCtrlHandler(shutdown_handler, TRUE); | |
9785d95b BK |
4157 | } |
4158 | ||
480b0c5b | 4159 | /* end of nt.c */ |
ab5796a9 MB |
4160 | |
4161 | /* arch-tag: 90442dd3-37be-482b-b272-ac752e3049f1 | |
4162 | (do not change this comment) */ |