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 | ||
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 | ||
f60ae425 BK |
494 | if ( |
495 | open_process_token (GetCurrentProcess (), TOKEN_QUERY, &token) | |
496 | && get_token_information ( | |
497 | token, TokenUser, | |
480b0c5b | 498 | (PVOID) user_sid, sizeof (user_sid), &trash) |
f60ae425 BK |
499 | && lookup_account_sid ( |
500 | NULL, *((PSID *) user_sid), name, &length, | |
501 | domain, &dlength, &user_type) | |
502 | ) | |
d1c1c3d2 | 503 | { |
480b0c5b GV |
504 | strcpy (the_passwd.pw_name, name); |
505 | /* Determine a reasonable uid value. */ | |
506 | if (stricmp ("administrator", name) == 0) | |
507 | { | |
508 | the_passwd.pw_uid = 0; | |
509 | the_passwd.pw_gid = 0; | |
510 | } | |
511 | else | |
512 | { | |
513 | SID_IDENTIFIER_AUTHORITY * pSIA; | |
514 | ||
f60ae425 | 515 | pSIA = get_sid_identifier_authority (*((PSID *) user_sid)); |
480b0c5b GV |
516 | /* I believe the relative portion is the last 4 bytes (of 6) |
517 | with msb first. */ | |
518 | the_passwd.pw_uid = ((pSIA->Value[2] << 24) + | |
519 | (pSIA->Value[3] << 16) + | |
520 | (pSIA->Value[4] << 8) + | |
521 | (pSIA->Value[5] << 0)); | |
522 | /* restrict to conventional uid range for normal users */ | |
523 | the_passwd.pw_uid = the_passwd.pw_uid % 60001; | |
524 | ||
525 | /* Get group id */ | |
f60ae425 | 526 | if (get_token_information (token, TokenPrimaryGroup, |
480b0c5b GV |
527 | (PVOID) user_sid, sizeof (user_sid), &trash)) |
528 | { | |
529 | SID_IDENTIFIER_AUTHORITY * pSIA; | |
530 | ||
f60ae425 | 531 | pSIA = get_sid_identifier_authority (*((PSID *) user_sid)); |
480b0c5b GV |
532 | the_passwd.pw_gid = ((pSIA->Value[2] << 24) + |
533 | (pSIA->Value[3] << 16) + | |
534 | (pSIA->Value[4] << 8) + | |
535 | (pSIA->Value[5] << 0)); | |
536 | /* I don't know if this is necessary, but for safety... */ | |
537 | the_passwd.pw_gid = the_passwd.pw_gid % 60001; | |
538 | } | |
539 | else | |
540 | the_passwd.pw_gid = the_passwd.pw_uid; | |
541 | } | |
542 | } | |
543 | /* If security calls are not supported (presumably because we | |
544 | are running under Windows 95), fallback to this. */ | |
545 | else if (GetUserName (name, &length)) | |
546 | { | |
547 | strcpy (the_passwd.pw_name, name); | |
548 | if (stricmp ("administrator", name) == 0) | |
549 | the_passwd.pw_uid = 0; | |
550 | else | |
551 | the_passwd.pw_uid = 123; | |
552 | the_passwd.pw_gid = the_passwd.pw_uid; | |
553 | } | |
554 | else | |
555 | { | |
556 | strcpy (the_passwd.pw_name, "unknown"); | |
557 | the_passwd.pw_uid = 123; | |
558 | the_passwd.pw_gid = 123; | |
d1c1c3d2 | 559 | } |
95ed0025 | 560 | |
480b0c5b GV |
561 | /* Ensure HOME and SHELL are defined. */ |
562 | if (getenv ("HOME") == NULL) | |
ca149beb | 563 | abort (); |
480b0c5b | 564 | if (getenv ("SHELL") == NULL) |
ca149beb | 565 | abort (); |
95ed0025 | 566 | |
480b0c5b GV |
567 | /* Set dir and shell from environment variables. */ |
568 | strcpy (the_passwd.pw_dir, getenv ("HOME")); | |
569 | strcpy (the_passwd.pw_shell, getenv ("SHELL")); | |
bd4a449f | 570 | |
480b0c5b GV |
571 | if (token) |
572 | CloseHandle (token); | |
95ed0025 RS |
573 | } |
574 | ||
95ed0025 | 575 | int |
480b0c5b | 576 | random () |
95ed0025 | 577 | { |
480b0c5b GV |
578 | /* rand () on NT gives us 15 random bits...hack together 30 bits. */ |
579 | return ((rand () << 15) | rand ()); | |
95ed0025 RS |
580 | } |
581 | ||
95ed0025 | 582 | void |
480b0c5b | 583 | srandom (int seed) |
95ed0025 | 584 | { |
480b0c5b | 585 | srand (seed); |
95ed0025 RS |
586 | } |
587 | ||
76b3903d | 588 | |
cbe39279 RS |
589 | /* Normalize filename by converting all path separators to |
590 | the specified separator. Also conditionally convert upper | |
591 | case path name components to lower case. */ | |
592 | ||
593 | static void | |
594 | normalize_filename (fp, path_sep) | |
595 | register char *fp; | |
596 | char path_sep; | |
597 | { | |
598 | char sep; | |
599 | char *elem; | |
600 | ||
5162ffce MB |
601 | /* Always lower-case drive letters a-z, even if the filesystem |
602 | preserves case in filenames. | |
603 | This is so filenames can be compared by string comparison | |
604 | functions that are case-sensitive. Even case-preserving filesystems | |
605 | do not distinguish case in drive letters. */ | |
606 | if (fp[1] == ':' && *fp >= 'A' && *fp <= 'Z') | |
607 | { | |
608 | *fp += 'a' - 'A'; | |
609 | fp += 2; | |
610 | } | |
611 | ||
fbd6baed | 612 | if (NILP (Vw32_downcase_file_names)) |
cbe39279 RS |
613 | { |
614 | while (*fp) | |
615 | { | |
616 | if (*fp == '/' || *fp == '\\') | |
617 | *fp = path_sep; | |
618 | fp++; | |
619 | } | |
620 | return; | |
621 | } | |
622 | ||
623 | sep = path_sep; /* convert to this path separator */ | |
624 | elem = fp; /* start of current path element */ | |
625 | ||
626 | do { | |
627 | if (*fp >= 'a' && *fp <= 'z') | |
628 | elem = 0; /* don't convert this element */ | |
629 | ||
630 | if (*fp == 0 || *fp == ':') | |
631 | { | |
632 | sep = *fp; /* restore current separator (or 0) */ | |
633 | *fp = '/'; /* after conversion of this element */ | |
634 | } | |
635 | ||
636 | if (*fp == '/' || *fp == '\\') | |
637 | { | |
638 | if (elem && elem != fp) | |
639 | { | |
640 | *fp = 0; /* temporary end of string */ | |
641 | _strlwr (elem); /* while we convert to lower case */ | |
642 | } | |
643 | *fp = sep; /* convert (or restore) path separator */ | |
644 | elem = fp + 1; /* next element starts after separator */ | |
645 | sep = path_sep; | |
646 | } | |
647 | } while (*fp++); | |
648 | } | |
649 | ||
480b0c5b | 650 | /* Destructively turn backslashes into slashes. */ |
95ed0025 | 651 | void |
480b0c5b GV |
652 | dostounix_filename (p) |
653 | register char *p; | |
95ed0025 | 654 | { |
cbe39279 | 655 | normalize_filename (p, '/'); |
95ed0025 RS |
656 | } |
657 | ||
480b0c5b | 658 | /* Destructively turn slashes into backslashes. */ |
95ed0025 | 659 | void |
480b0c5b GV |
660 | unixtodos_filename (p) |
661 | register char *p; | |
95ed0025 | 662 | { |
cbe39279 | 663 | normalize_filename (p, '\\'); |
95ed0025 RS |
664 | } |
665 | ||
480b0c5b GV |
666 | /* Remove all CR's that are followed by a LF. |
667 | (From msdos.c...probably should figure out a way to share it, | |
668 | although this code isn't going to ever change.) */ | |
35f0d482 | 669 | int |
480b0c5b GV |
670 | crlf_to_lf (n, buf) |
671 | register int n; | |
672 | register unsigned char *buf; | |
35f0d482 | 673 | { |
480b0c5b GV |
674 | unsigned char *np = buf; |
675 | unsigned char *startp = buf; | |
676 | unsigned char *endp = buf + n; | |
35f0d482 | 677 | |
480b0c5b GV |
678 | if (n == 0) |
679 | return n; | |
680 | while (buf < endp - 1) | |
95ed0025 | 681 | { |
480b0c5b GV |
682 | if (*buf == 0x0d) |
683 | { | |
684 | if (*(++buf) != 0x0a) | |
685 | *np++ = 0x0d; | |
686 | } | |
687 | else | |
688 | *np++ = *buf++; | |
95ed0025 | 689 | } |
480b0c5b GV |
690 | if (buf < endp) |
691 | *np++ = *buf++; | |
692 | return np - startp; | |
95ed0025 RS |
693 | } |
694 | ||
76b3903d GV |
695 | /* Parse the root part of file name, if present. Return length and |
696 | optionally store pointer to char after root. */ | |
697 | static int | |
698 | parse_root (char * name, char ** pPath) | |
699 | { | |
700 | char * start = name; | |
701 | ||
702 | if (name == NULL) | |
703 | return 0; | |
704 | ||
705 | /* find the root name of the volume if given */ | |
706 | if (isalpha (name[0]) && name[1] == ':') | |
707 | { | |
708 | /* skip past drive specifier */ | |
709 | name += 2; | |
710 | if (IS_DIRECTORY_SEP (name[0])) | |
711 | name++; | |
712 | } | |
713 | else if (IS_DIRECTORY_SEP (name[0]) && IS_DIRECTORY_SEP (name[1])) | |
714 | { | |
715 | int slashes = 2; | |
716 | name += 2; | |
717 | do | |
718 | { | |
719 | if (IS_DIRECTORY_SEP (*name) && --slashes == 0) | |
720 | break; | |
721 | name++; | |
722 | } | |
723 | while ( *name ); | |
724 | if (IS_DIRECTORY_SEP (name[0])) | |
725 | name++; | |
726 | } | |
727 | ||
728 | if (pPath) | |
729 | *pPath = name; | |
730 | ||
731 | return name - start; | |
732 | } | |
733 | ||
734 | /* Get long base name for name; name is assumed to be absolute. */ | |
735 | static int | |
736 | get_long_basename (char * name, char * buf, int size) | |
737 | { | |
738 | WIN32_FIND_DATA find_data; | |
739 | HANDLE dir_handle; | |
740 | int len = 0; | |
741 | ||
9ab8560d | 742 | /* must be valid filename, no wild cards or other invalid characters */ |
22189f79 | 743 | if (_mbspbrk (name, "*?|<>\"")) |
bb1584c8 RS |
744 | return 0; |
745 | ||
76b3903d GV |
746 | dir_handle = FindFirstFile (name, &find_data); |
747 | if (dir_handle != INVALID_HANDLE_VALUE) | |
748 | { | |
749 | if ((len = strlen (find_data.cFileName)) < size) | |
750 | memcpy (buf, find_data.cFileName, len + 1); | |
751 | else | |
752 | len = 0; | |
753 | FindClose (dir_handle); | |
754 | } | |
755 | return len; | |
756 | } | |
757 | ||
758 | /* Get long name for file, if possible (assumed to be absolute). */ | |
759 | BOOL | |
760 | w32_get_long_filename (char * name, char * buf, int size) | |
761 | { | |
762 | char * o = buf; | |
763 | char * p; | |
764 | char * q; | |
765 | char full[ MAX_PATH ]; | |
766 | int len; | |
767 | ||
768 | len = strlen (name); | |
769 | if (len >= MAX_PATH) | |
770 | return FALSE; | |
771 | ||
772 | /* Use local copy for destructive modification. */ | |
773 | memcpy (full, name, len+1); | |
774 | unixtodos_filename (full); | |
775 | ||
776 | /* Copy root part verbatim. */ | |
777 | len = parse_root (full, &p); | |
778 | memcpy (o, full, len); | |
779 | o += len; | |
4f8ac0b2 | 780 | *o = '\0'; |
76b3903d GV |
781 | size -= len; |
782 | ||
4f8ac0b2 | 783 | while (p != NULL && *p) |
76b3903d GV |
784 | { |
785 | q = p; | |
786 | p = strchr (q, '\\'); | |
787 | if (p) *p = '\0'; | |
788 | len = get_long_basename (full, o, size); | |
789 | if (len > 0) | |
790 | { | |
791 | o += len; | |
792 | size -= len; | |
793 | if (p != NULL) | |
794 | { | |
795 | *p++ = '\\'; | |
796 | if (size < 2) | |
797 | return FALSE; | |
798 | *o++ = '\\'; | |
799 | size--; | |
800 | *o = '\0'; | |
801 | } | |
802 | } | |
803 | else | |
804 | return FALSE; | |
805 | } | |
76b3903d GV |
806 | |
807 | return TRUE; | |
808 | } | |
809 | ||
9d3355d1 GV |
810 | int |
811 | is_unc_volume (const char *filename) | |
812 | { | |
813 | const char *ptr = filename; | |
814 | ||
815 | if (!IS_DIRECTORY_SEP (ptr[0]) || !IS_DIRECTORY_SEP (ptr[1]) || !ptr[2]) | |
816 | return 0; | |
817 | ||
22189f79 | 818 | if (_mbspbrk (ptr + 2, "*?|<>\"\\/")) |
9d3355d1 GV |
819 | return 0; |
820 | ||
821 | return 1; | |
822 | } | |
76b3903d | 823 | |
95ed0025 RS |
824 | /* Routines that are no-ops on NT but are defined to get Emacs to compile. */ |
825 | ||
177c0ea7 JB |
826 | int |
827 | sigsetmask (int signal_mask) | |
828 | { | |
95ed0025 RS |
829 | return 0; |
830 | } | |
831 | ||
177c0ea7 JB |
832 | int |
833 | sigmask (int sig) | |
834 | { | |
8f900f6e AI |
835 | return 0; |
836 | } | |
837 | ||
177c0ea7 JB |
838 | int |
839 | sigblock (int sig) | |
840 | { | |
95ed0025 RS |
841 | return 0; |
842 | } | |
843 | ||
177c0ea7 JB |
844 | int |
845 | sigunblock (int sig) | |
846 | { | |
8f900f6e AI |
847 | return 0; |
848 | } | |
849 | ||
177c0ea7 JB |
850 | int |
851 | setpgrp (int pid, int gid) | |
852 | { | |
95ed0025 RS |
853 | return 0; |
854 | } | |
855 | ||
177c0ea7 JB |
856 | int |
857 | alarm (int seconds) | |
858 | { | |
95ed0025 RS |
859 | return 0; |
860 | } | |
861 | ||
177c0ea7 JB |
862 | void |
863 | unrequest_sigio (void) | |
864 | { | |
c6624584 | 865 | return; |
95ed0025 RS |
866 | } |
867 | ||
c6624584 | 868 | void |
177c0ea7 JB |
869 | request_sigio (void) |
870 | { | |
c6624584 | 871 | return; |
95ed0025 RS |
872 | } |
873 | ||
480b0c5b | 874 | #define REG_ROOT "SOFTWARE\\GNU\\Emacs" |
f332b293 | 875 | |
177c0ea7 | 876 | LPBYTE |
fbd6baed | 877 | w32_get_resource (key, lpdwtype) |
f332b293 GV |
878 | char *key; |
879 | LPDWORD lpdwtype; | |
880 | { | |
881 | LPBYTE lpvalue; | |
882 | HKEY hrootkey = NULL; | |
883 | DWORD cbData; | |
884 | BOOL ok = FALSE; | |
177c0ea7 JB |
885 | |
886 | /* Check both the current user and the local machine to see if | |
f332b293 | 887 | we have any resources. */ |
177c0ea7 | 888 | |
f332b293 GV |
889 | if (RegOpenKeyEx (HKEY_CURRENT_USER, REG_ROOT, 0, KEY_READ, &hrootkey) == ERROR_SUCCESS) |
890 | { | |
891 | lpvalue = NULL; | |
892 | ||
177c0ea7 JB |
893 | if (RegQueryValueEx (hrootkey, key, NULL, NULL, NULL, &cbData) == ERROR_SUCCESS |
894 | && (lpvalue = (LPBYTE) xmalloc (cbData)) != NULL | |
f332b293 GV |
895 | && RegQueryValueEx (hrootkey, key, NULL, lpdwtype, lpvalue, &cbData) == ERROR_SUCCESS) |
896 | { | |
897 | return (lpvalue); | |
898 | } | |
899 | ||
900 | if (lpvalue) xfree (lpvalue); | |
177c0ea7 | 901 | |
f332b293 | 902 | RegCloseKey (hrootkey); |
177c0ea7 JB |
903 | } |
904 | ||
f332b293 GV |
905 | if (RegOpenKeyEx (HKEY_LOCAL_MACHINE, REG_ROOT, 0, KEY_READ, &hrootkey) == ERROR_SUCCESS) |
906 | { | |
907 | lpvalue = NULL; | |
177c0ea7 | 908 | |
76b3903d GV |
909 | if (RegQueryValueEx (hrootkey, key, NULL, NULL, NULL, &cbData) == ERROR_SUCCESS |
910 | && (lpvalue = (LPBYTE) xmalloc (cbData)) != NULL | |
911 | && RegQueryValueEx (hrootkey, key, NULL, lpdwtype, lpvalue, &cbData) == ERROR_SUCCESS) | |
f332b293 GV |
912 | { |
913 | return (lpvalue); | |
914 | } | |
177c0ea7 | 915 | |
f332b293 | 916 | if (lpvalue) xfree (lpvalue); |
177c0ea7 | 917 | |
f332b293 | 918 | RegCloseKey (hrootkey); |
177c0ea7 JB |
919 | } |
920 | ||
f332b293 GV |
921 | return (NULL); |
922 | } | |
923 | ||
75b08edb GV |
924 | char *get_emacs_configuration (void); |
925 | extern Lisp_Object Vsystem_configuration; | |
926 | ||
f332b293 | 927 | void |
aa7b87b0 | 928 | init_environment (char ** argv) |
f332b293 | 929 | { |
b3308d2e KH |
930 | static const char * const tempdirs[] = { |
931 | "$TMPDIR", "$TEMP", "$TMP", "c:/" | |
932 | }; | |
2d5324c5 | 933 | |
b3308d2e | 934 | int i; |
2d5324c5 | 935 | |
b3308d2e KH |
936 | const int imax = sizeof (tempdirs) / sizeof (tempdirs[0]); |
937 | ||
938 | /* Make sure they have a usable $TMPDIR. Many Emacs functions use | |
939 | temporary files and assume "/tmp" if $TMPDIR is unset, which | |
940 | will break on DOS/Windows. Refuse to work if we cannot find | |
941 | a directory, not even "c:/", usable for that purpose. */ | |
942 | for (i = 0; i < imax ; i++) | |
943 | { | |
944 | const char *tmp = tempdirs[i]; | |
945 | ||
946 | if (*tmp == '$') | |
947 | tmp = getenv (tmp + 1); | |
948 | /* Note that `access' can lie to us if the directory resides on a | |
949 | read-only filesystem, like CD-ROM or a write-protected floppy. | |
950 | The only way to be really sure is to actually create a file and | |
951 | see if it succeeds. But I think that's too much to ask. */ | |
a302c7ae | 952 | if (tmp && _access (tmp, D_OK) == 0) |
b3308d2e KH |
953 | { |
954 | char * var = alloca (strlen (tmp) + 8); | |
955 | sprintf (var, "TMPDIR=%s", tmp); | |
aca583b2 | 956 | _putenv (strdup (var)); |
b3308d2e KH |
957 | break; |
958 | } | |
959 | } | |
960 | if (i >= imax) | |
961 | cmd_error_internal | |
962 | (Fcons (Qerror, | |
963 | Fcons (build_string ("no usable temporary directories found!!"), | |
964 | Qnil)), | |
965 | "While setting TMPDIR: "); | |
966 | ||
ca149beb AI |
967 | /* Check for environment variables and use registry settings if they |
968 | don't exist. Fallback on default values where applicable. */ | |
f332b293 | 969 | { |
480b0c5b GV |
970 | int i; |
971 | LPBYTE lpval; | |
972 | DWORD dwType; | |
69fb0241 | 973 | char locale_name[32]; |
2d5324c5 JR |
974 | struct stat ignored; |
975 | char default_home[MAX_PATH]; | |
f332b293 | 976 | |
e00b99c8 | 977 | static const struct env_entry |
ca149beb AI |
978 | { |
979 | char * name; | |
980 | char * def_value; | |
e00b99c8 | 981 | } dflt_envvars[] = |
ca149beb AI |
982 | { |
983 | {"HOME", "C:/"}, | |
984 | {"PRELOAD_WINSOCK", NULL}, | |
985 | {"emacs_dir", "C:/emacs"}, | |
cc14250a | 986 | {"EMACSLOADPATH", "%emacs_dir%/site-lisp;%emacs_dir%/../site-lisp;%emacs_dir%/lisp;%emacs_dir%/leim"}, |
ca149beb AI |
987 | {"SHELL", "%emacs_dir%/bin/cmdproxy.exe"}, |
988 | {"EMACSDATA", "%emacs_dir%/etc"}, | |
989 | {"EMACSPATH", "%emacs_dir%/bin"}, | |
76b3903d | 990 | /* We no longer set INFOPATH because Info-default-directory-list |
ca149beb AI |
991 | is then ignored. */ |
992 | /* {"INFOPATH", "%emacs_dir%/info"}, */ | |
993 | {"EMACSDOC", "%emacs_dir%/etc"}, | |
69fb0241 JR |
994 | {"TERM", "cmd"}, |
995 | {"LANG", NULL}, | |
480b0c5b GV |
996 | }; |
997 | ||
e00b99c8 EZ |
998 | #define N_ENV_VARS sizeof(dflt_envvars)/sizeof(dflt_envvars[0]) |
999 | ||
1000 | /* We need to copy dflt_envvars[] and work on the copy because we | |
1001 | don't want the dumped Emacs to inherit the values of | |
1002 | environment variables we saw during dumping (which could be on | |
1003 | a different system). The defaults above must be left intact. */ | |
1004 | struct env_entry env_vars[N_ENV_VARS]; | |
1005 | ||
1006 | for (i = 0; i < N_ENV_VARS; i++) | |
1007 | env_vars[i] = dflt_envvars[i]; | |
1008 | ||
2d5324c5 JR |
1009 | /* For backwards compatibility, check if a .emacs file exists in C:/ |
1010 | If not, then we can try to default to the appdata directory under the | |
1011 | user's profile, which is more likely to be writable. */ | |
1012 | if (stat ("C:/.emacs", &ignored) < 0) | |
1013 | { | |
1014 | HRESULT profile_result; | |
1015 | /* Dynamically load ShGetFolderPath, as it won't exist on versions | |
1016 | of Windows 95 and NT4 that have not been updated to include | |
1017 | MSIE 5. Also we don't link with shell32.dll by default. */ | |
1018 | HMODULE shell32_dll; | |
1019 | ShGetFolderPath_fn get_folder_path; | |
1020 | shell32_dll = GetModuleHandle ("shell32.dll"); | |
1021 | get_folder_path = (ShGetFolderPath_fn) | |
1022 | GetProcAddress (shell32_dll, "SHGetFolderPathA"); | |
1023 | ||
1024 | if (get_folder_path != NULL) | |
1025 | { | |
1026 | profile_result = get_folder_path (NULL, CSIDL_APPDATA, NULL, | |
1027 | 0, default_home); | |
1028 | ||
1029 | /* If we can't get the appdata dir, revert to old behaviour. */ | |
1030 | if (profile_result == S_OK) | |
1031 | env_vars[0].def_value = default_home; | |
1032 | } | |
1033 | ||
1034 | /* Unload shell32.dll, it is not needed anymore. */ | |
1035 | FreeLibrary (shell32_dll); | |
1036 | } | |
1037 | ||
69fb0241 JR |
1038 | /* Get default locale info and use it for LANG. */ |
1039 | if (GetLocaleInfo (LOCALE_USER_DEFAULT, | |
1040 | LOCALE_SABBREVLANGNAME | LOCALE_USE_CP_ACP, | |
1041 | locale_name, sizeof (locale_name))) | |
1042 | { | |
e00b99c8 | 1043 | for (i = 0; i < N_ENV_VARS; i++) |
69fb0241 JR |
1044 | { |
1045 | if (strcmp (env_vars[i].name, "LANG") == 0) | |
1046 | { | |
1047 | env_vars[i].def_value = locale_name; | |
1048 | break; | |
1049 | } | |
1050 | } | |
1051 | } | |
1052 | ||
ca149beb AI |
1053 | #define SET_ENV_BUF_SIZE (4 * MAX_PATH) /* to cover EMACSLOADPATH */ |
1054 | ||
1055 | /* Treat emacs_dir specially: set it unconditionally based on our | |
1056 | location, if it appears that we are running from the bin subdir | |
1057 | of a standard installation. */ | |
1058 | { | |
1059 | char *p; | |
1060 | char modname[MAX_PATH]; | |
1061 | ||
1062 | if (!GetModuleFileName (NULL, modname, MAX_PATH)) | |
1063 | abort (); | |
1064 | if ((p = strrchr (modname, '\\')) == NULL) | |
1065 | abort (); | |
1066 | *p = 0; | |
1067 | ||
1068 | if ((p = strrchr (modname, '\\')) && stricmp (p, "\\bin") == 0) | |
1069 | { | |
1070 | char buf[SET_ENV_BUF_SIZE]; | |
1071 | ||
1072 | *p = 0; | |
1073 | for (p = modname; *p; p++) | |
1074 | if (*p == '\\') *p = '/'; | |
177c0ea7 | 1075 | |
ca149beb | 1076 | _snprintf (buf, sizeof(buf)-1, "emacs_dir=%s", modname); |
a302c7ae | 1077 | _putenv (strdup (buf)); |
ca149beb | 1078 | } |
950090be JR |
1079 | /* Handle running emacs from the build directory: src/oo-spd/i386/ */ |
1080 | ||
1081 | /* FIXME: should use substring of get_emacs_configuration (). | |
1082 | But I don't think the Windows build supports alpha, mips etc | |
1083 | anymore, so have taken the easy option for now. */ | |
1084 | else if (p && stricmp (p, "\\i386") == 0) | |
1085 | { | |
1086 | *p = 0; | |
1087 | p = strrchr (modname, '\\'); | |
1088 | if (p != NULL) | |
1089 | { | |
1090 | *p = 0; | |
1091 | p = strrchr (modname, '\\'); | |
1092 | if (p && stricmp (p, "\\src") == 0) | |
1093 | { | |
1094 | char buf[SET_ENV_BUF_SIZE]; | |
1095 | ||
1096 | *p = 0; | |
1097 | for (p = modname; *p; p++) | |
1098 | if (*p == '\\') *p = '/'; | |
1099 | ||
1100 | _snprintf (buf, sizeof(buf)-1, "emacs_dir=%s", modname); | |
1101 | _putenv (strdup (buf)); | |
1102 | } | |
1103 | } | |
1104 | } | |
ca149beb AI |
1105 | } |
1106 | ||
e00b99c8 | 1107 | for (i = 0; i < N_ENV_VARS; i++) |
f332b293 | 1108 | { |
ca149beb | 1109 | if (!getenv (env_vars[i].name)) |
480b0c5b | 1110 | { |
ca149beb | 1111 | int dont_free = 0; |
480b0c5b | 1112 | |
ca149beb AI |
1113 | if ((lpval = w32_get_resource (env_vars[i].name, &dwType)) == NULL) |
1114 | { | |
1115 | lpval = env_vars[i].def_value; | |
1116 | dwType = REG_EXPAND_SZ; | |
1117 | dont_free = 1; | |
480b0c5b | 1118 | } |
ca149beb AI |
1119 | |
1120 | if (lpval) | |
480b0c5b | 1121 | { |
892eb237 | 1122 | char buf1[SET_ENV_BUF_SIZE], buf2[SET_ENV_BUF_SIZE]; |
ca149beb | 1123 | |
892eb237 EZ |
1124 | if (dwType == REG_EXPAND_SZ) |
1125 | ExpandEnvironmentStrings ((LPSTR) lpval, buf1, sizeof(buf1)); | |
ca149beb | 1126 | else if (dwType == REG_SZ) |
892eb237 EZ |
1127 | strcpy (buf1, lpval); |
1128 | if (dwType == REG_EXPAND_SZ || dwType == REG_SZ) | |
ca149beb | 1129 | { |
892eb237 EZ |
1130 | _snprintf (buf2, sizeof(buf2)-1, "%s=%s", env_vars[i].name, |
1131 | buf1); | |
1132 | _putenv (strdup (buf2)); | |
ca149beb | 1133 | } |
f332b293 | 1134 | |
ca149beb AI |
1135 | if (!dont_free) |
1136 | xfree (lpval); | |
1137 | } | |
480b0c5b GV |
1138 | } |
1139 | } | |
1140 | } | |
1141 | ||
75b08edb GV |
1142 | /* Rebuild system configuration to reflect invoking system. */ |
1143 | Vsystem_configuration = build_string (EMACS_CONFIGURATION); | |
1144 | ||
76b3903d GV |
1145 | /* Another special case: on NT, the PATH variable is actually named |
1146 | "Path" although cmd.exe (perhaps NT itself) arranges for | |
1147 | environment variable lookup and setting to be case insensitive. | |
1148 | However, Emacs assumes a fully case sensitive environment, so we | |
1149 | need to change "Path" to "PATH" to match the expectations of | |
1150 | various elisp packages. We do this by the sneaky method of | |
1151 | modifying the string in the C runtime environ entry. | |
1152 | ||
1153 | The same applies to COMSPEC. */ | |
1154 | { | |
1155 | char ** envp; | |
1156 | ||
1157 | for (envp = environ; *envp; envp++) | |
1158 | if (_strnicmp (*envp, "PATH=", 5) == 0) | |
1159 | memcpy (*envp, "PATH=", 5); | |
1160 | else if (_strnicmp (*envp, "COMSPEC=", 8) == 0) | |
1161 | memcpy (*envp, "COMSPEC=", 8); | |
1162 | } | |
1163 | ||
1164 | /* Remember the initial working directory for getwd, then make the | |
1165 | real wd be the location of emacs.exe to avoid conflicts when | |
1166 | renaming or deleting directories. (We also don't call chdir when | |
1167 | running subprocesses for the same reason.) */ | |
1168 | if (!GetCurrentDirectory (MAXPATHLEN, startup_dir)) | |
1169 | abort (); | |
1170 | ||
1171 | { | |
1172 | char *p; | |
aa7b87b0 | 1173 | static char modname[MAX_PATH]; |
76b3903d GV |
1174 | |
1175 | if (!GetModuleFileName (NULL, modname, MAX_PATH)) | |
1176 | abort (); | |
1177 | if ((p = strrchr (modname, '\\')) == NULL) | |
1178 | abort (); | |
1179 | *p = 0; | |
1180 | ||
1181 | SetCurrentDirectory (modname); | |
aa7b87b0 AI |
1182 | |
1183 | /* Ensure argv[0] has the full path to Emacs. */ | |
1184 | *p = '\\'; | |
1185 | argv[0] = modname; | |
76b3903d GV |
1186 | } |
1187 | ||
20af4831 JR |
1188 | /* Determine if there is a middle mouse button, to allow parse_button |
1189 | to decide whether right mouse events should be mouse-2 or | |
1190 | mouse-3. */ | |
e0c181dd | 1191 | w32_num_mouse_buttons = GetSystemMetrics (SM_CMOUSEBUTTONS); |
20af4831 | 1192 | |
480b0c5b GV |
1193 | init_user_info (); |
1194 | } | |
1195 | ||
bf794306 EZ |
1196 | char * |
1197 | emacs_root_dir (void) | |
1198 | { | |
1199 | static char root_dir[FILENAME_MAX]; | |
1200 | const char *p; | |
1201 | ||
1202 | p = getenv ("emacs_dir"); | |
1203 | if (p == NULL) | |
1204 | abort (); | |
1205 | strcpy (root_dir, p); | |
1206 | root_dir[parse_root (root_dir, NULL)] = '\0'; | |
1207 | dostounix_filename (root_dir); | |
1208 | return root_dir; | |
1209 | } | |
1210 | ||
480b0c5b GV |
1211 | /* We don't have scripts to automatically determine the system configuration |
1212 | for Emacs before it's compiled, and we don't want to have to make the | |
1213 | user enter it, so we define EMACS_CONFIGURATION to invoke this runtime | |
1214 | routine. */ | |
1215 | ||
480b0c5b GV |
1216 | char * |
1217 | get_emacs_configuration (void) | |
1218 | { | |
1219 | char *arch, *oem, *os; | |
c5247da2 | 1220 | int build_num; |
a302c7ae | 1221 | static char configuration_buffer[32]; |
480b0c5b GV |
1222 | |
1223 | /* Determine the processor type. */ | |
177c0ea7 | 1224 | switch (get_processor_type ()) |
480b0c5b GV |
1225 | { |
1226 | ||
1227 | #ifdef PROCESSOR_INTEL_386 | |
1228 | case PROCESSOR_INTEL_386: | |
1229 | case PROCESSOR_INTEL_486: | |
1230 | case PROCESSOR_INTEL_PENTIUM: | |
1231 | arch = "i386"; | |
1232 | break; | |
1233 | #endif | |
1234 | ||
1235 | #ifdef PROCESSOR_INTEL_860 | |
1236 | case PROCESSOR_INTEL_860: | |
1237 | arch = "i860"; | |
1238 | break; | |
1239 | #endif | |
1240 | ||
1241 | #ifdef PROCESSOR_MIPS_R2000 | |
1242 | case PROCESSOR_MIPS_R2000: | |
1243 | case PROCESSOR_MIPS_R3000: | |
1244 | case PROCESSOR_MIPS_R4000: | |
1245 | arch = "mips"; | |
1246 | break; | |
1247 | #endif | |
1248 | ||
1249 | #ifdef PROCESSOR_ALPHA_21064 | |
1250 | case PROCESSOR_ALPHA_21064: | |
1251 | arch = "alpha"; | |
1252 | break; | |
1253 | #endif | |
1254 | ||
1255 | default: | |
1256 | arch = "unknown"; | |
1257 | break; | |
f332b293 | 1258 | } |
480b0c5b | 1259 | |
a302c7ae AI |
1260 | /* Use the OEM field to reflect the compiler/library combination. */ |
1261 | #ifdef _MSC_VER | |
1262 | #define COMPILER_NAME "msvc" | |
1263 | #else | |
1264 | #ifdef __GNUC__ | |
1265 | #define COMPILER_NAME "mingw" | |
1266 | #else | |
1267 | #define COMPILER_NAME "unknown" | |
1268 | #endif | |
1269 | #endif | |
1270 | oem = COMPILER_NAME; | |
480b0c5b | 1271 | |
c5247da2 GV |
1272 | switch (osinfo_cache.dwPlatformId) { |
1273 | case VER_PLATFORM_WIN32_NT: | |
1274 | os = "nt"; | |
1275 | build_num = osinfo_cache.dwBuildNumber; | |
1276 | break; | |
1277 | case VER_PLATFORM_WIN32_WINDOWS: | |
1278 | if (osinfo_cache.dwMinorVersion == 0) { | |
1279 | os = "windows95"; | |
1280 | } else { | |
1281 | os = "windows98"; | |
1282 | } | |
1283 | build_num = LOWORD (osinfo_cache.dwBuildNumber); | |
1284 | break; | |
1285 | case VER_PLATFORM_WIN32s: | |
1286 | /* Not supported, should not happen. */ | |
1287 | os = "windows32s"; | |
1288 | build_num = LOWORD (osinfo_cache.dwBuildNumber); | |
1289 | break; | |
1290 | default: | |
1291 | os = "unknown"; | |
1292 | build_num = 0; | |
1293 | break; | |
1294 | } | |
1295 | ||
1296 | if (osinfo_cache.dwPlatformId == VER_PLATFORM_WIN32_NT) { | |
1297 | sprintf (configuration_buffer, "%s-%s-%s%d.%d.%d", arch, oem, os, | |
1298 | get_w32_major_version (), get_w32_minor_version (), build_num); | |
1299 | } else { | |
1300 | sprintf (configuration_buffer, "%s-%s-%s.%d", arch, oem, os, build_num); | |
1301 | } | |
480b0c5b | 1302 | |
480b0c5b | 1303 | return configuration_buffer; |
f332b293 GV |
1304 | } |
1305 | ||
a302c7ae AI |
1306 | char * |
1307 | get_emacs_configuration_options (void) | |
1308 | { | |
1309 | static char options_buffer[256]; | |
1310 | ||
1311 | /* Work out the effective configure options for this build. */ | |
1312 | #ifdef _MSC_VER | |
1313 | #define COMPILER_VERSION "--with-msvc (%d.%02d)", _MSC_VER / 100, _MSC_VER % 100 | |
1314 | #else | |
1315 | #ifdef __GNUC__ | |
1316 | #define COMPILER_VERSION "--with-gcc (%d.%d)", __GNUC__, __GNUC_MINOR__ | |
1317 | #else | |
1318 | #define COMPILER_VERSION "" | |
1319 | #endif | |
1320 | #endif | |
1321 | ||
1322 | sprintf (options_buffer, COMPILER_VERSION); | |
1323 | #ifdef EMACSDEBUG | |
1324 | strcat (options_buffer, " --no-opt"); | |
1325 | #endif | |
1326 | #ifdef USER_CFLAGS | |
1327 | strcat (options_buffer, " --cflags"); | |
1328 | strcat (options_buffer, USER_CFLAGS); | |
1329 | #endif | |
1330 | #ifdef USER_LDFLAGS | |
1331 | strcat (options_buffer, " --ldflags"); | |
1332 | strcat (options_buffer, USER_LDFLAGS); | |
1333 | #endif | |
1334 | return options_buffer; | |
1335 | } | |
1336 | ||
1337 | ||
35f0d482 KH |
1338 | #include <sys/timeb.h> |
1339 | ||
1340 | /* Emulate gettimeofday (Ulrich Leodolter, 1/11/95). */ | |
177c0ea7 | 1341 | void |
35f0d482 KH |
1342 | gettimeofday (struct timeval *tv, struct timezone *tz) |
1343 | { | |
6e602566 | 1344 | struct _timeb tb; |
35f0d482 KH |
1345 | _ftime (&tb); |
1346 | ||
1347 | tv->tv_sec = tb.time; | |
1348 | tv->tv_usec = tb.millitm * 1000L; | |
177c0ea7 | 1349 | if (tz) |
35f0d482 KH |
1350 | { |
1351 | tz->tz_minuteswest = tb.timezone; /* minutes west of Greenwich */ | |
1352 | tz->tz_dsttime = tb.dstflag; /* type of dst correction */ | |
1353 | } | |
1354 | } | |
35f0d482 | 1355 | |
480b0c5b | 1356 | /* ------------------------------------------------------------------------- */ |
fbd6baed | 1357 | /* IO support and wrapper functions for W32 API. */ |
480b0c5b | 1358 | /* ------------------------------------------------------------------------- */ |
95ed0025 | 1359 | |
480b0c5b | 1360 | /* Place a wrapper around the MSVC version of ctime. It returns NULL |
177c0ea7 | 1361 | on network directories, so we handle that case here. |
480b0c5b GV |
1362 | (Ulrich Leodolter, 1/11/95). */ |
1363 | char * | |
1364 | sys_ctime (const time_t *t) | |
1365 | { | |
1366 | char *str = (char *) ctime (t); | |
1367 | return (str ? str : "Sun Jan 01 00:00:00 1970"); | |
1368 | } | |
1369 | ||
1370 | /* Emulate sleep...we could have done this with a define, but that | |
1371 | would necessitate including windows.h in the files that used it. | |
1372 | This is much easier. */ | |
1373 | void | |
1374 | sys_sleep (int seconds) | |
1375 | { | |
1376 | Sleep (seconds * 1000); | |
1377 | } | |
1378 | ||
76b3903d | 1379 | /* Internal MSVC functions for low-level descriptor munging */ |
480b0c5b GV |
1380 | extern int __cdecl _set_osfhnd (int fd, long h); |
1381 | extern int __cdecl _free_osfhnd (int fd); | |
1382 | ||
1383 | /* parallel array of private info on file handles */ | |
1384 | filedesc fd_info [ MAXDESC ]; | |
1385 | ||
76b3903d GV |
1386 | typedef struct volume_info_data { |
1387 | struct volume_info_data * next; | |
1388 | ||
1389 | /* time when info was obtained */ | |
1390 | DWORD timestamp; | |
1391 | ||
1392 | /* actual volume info */ | |
1393 | char * root_dir; | |
480b0c5b GV |
1394 | DWORD serialnum; |
1395 | DWORD maxcomp; | |
1396 | DWORD flags; | |
76b3903d GV |
1397 | char * name; |
1398 | char * type; | |
1399 | } volume_info_data; | |
1400 | ||
1401 | /* Global referenced by various functions. */ | |
1402 | static volume_info_data volume_info; | |
1403 | ||
1404 | /* Vector to indicate which drives are local and fixed (for which cached | |
1405 | data never expires). */ | |
1406 | static BOOL fixed_drives[26]; | |
1407 | ||
1408 | /* Consider cached volume information to be stale if older than 10s, | |
1409 | at least for non-local drives. Info for fixed drives is never stale. */ | |
1410 | #define DRIVE_INDEX( c ) ( (c) <= 'Z' ? (c) - 'A' : (c) - 'a' ) | |
1411 | #define VOLINFO_STILL_VALID( root_dir, info ) \ | |
1412 | ( ( isalpha (root_dir[0]) && \ | |
1413 | fixed_drives[ DRIVE_INDEX (root_dir[0]) ] ) \ | |
1414 | || GetTickCount () - info->timestamp < 10000 ) | |
1415 | ||
1416 | /* Cache support functions. */ | |
1417 | ||
1418 | /* Simple linked list with linear search is sufficient. */ | |
1419 | static volume_info_data *volume_cache = NULL; | |
1420 | ||
1421 | static volume_info_data * | |
1422 | lookup_volume_info (char * root_dir) | |
1423 | { | |
1424 | volume_info_data * info; | |
1425 | ||
1426 | for (info = volume_cache; info; info = info->next) | |
1427 | if (stricmp (info->root_dir, root_dir) == 0) | |
1428 | break; | |
1429 | return info; | |
1430 | } | |
1431 | ||
1432 | static void | |
1433 | add_volume_info (char * root_dir, volume_info_data * info) | |
1434 | { | |
a302c7ae | 1435 | info->root_dir = xstrdup (root_dir); |
76b3903d GV |
1436 | info->next = volume_cache; |
1437 | volume_cache = info; | |
1438 | } | |
1439 | ||
1440 | ||
1441 | /* Wrapper for GetVolumeInformation, which uses caching to avoid | |
1442 | performance penalty (~2ms on 486 for local drives, 7.5ms for local | |
1443 | cdrom drive, ~5-10ms or more for remote drives on LAN). */ | |
1444 | volume_info_data * | |
1445 | GetCachedVolumeInformation (char * root_dir) | |
1446 | { | |
1447 | volume_info_data * info; | |
1448 | char default_root[ MAX_PATH ]; | |
1449 | ||
1450 | /* NULL for root_dir means use root from current directory. */ | |
1451 | if (root_dir == NULL) | |
1452 | { | |
1453 | if (GetCurrentDirectory (MAX_PATH, default_root) == 0) | |
1454 | return NULL; | |
1455 | parse_root (default_root, &root_dir); | |
1456 | *root_dir = 0; | |
1457 | root_dir = default_root; | |
1458 | } | |
1459 | ||
1460 | /* Local fixed drives can be cached permanently. Removable drives | |
1461 | cannot be cached permanently, since the volume name and serial | |
1462 | number (if nothing else) can change. Remote drives should be | |
1463 | treated as if they are removable, since there is no sure way to | |
1464 | tell whether they are or not. Also, the UNC association of drive | |
1465 | letters mapped to remote volumes can be changed at any time (even | |
1466 | by other processes) without notice. | |
177c0ea7 | 1467 | |
76b3903d GV |
1468 | As a compromise, so we can benefit from caching info for remote |
1469 | volumes, we use a simple expiry mechanism to invalidate cache | |
1470 | entries that are more than ten seconds old. */ | |
1471 | ||
1472 | #if 0 | |
1473 | /* No point doing this, because WNetGetConnection is even slower than | |
1474 | GetVolumeInformation, consistently taking ~50ms on a 486 (FWIW, | |
1475 | GetDriveType is about the only call of this type which does not | |
1476 | involve network access, and so is extremely quick). */ | |
1477 | ||
1478 | /* Map drive letter to UNC if remote. */ | |
1479 | if ( isalpha( root_dir[0] ) && !fixed[ DRIVE_INDEX( root_dir[0] ) ] ) | |
1480 | { | |
1481 | char remote_name[ 256 ]; | |
1482 | char drive[3] = { root_dir[0], ':' }; | |
1483 | ||
1484 | if (WNetGetConnection (drive, remote_name, sizeof (remote_name)) | |
1485 | == NO_ERROR) | |
1486 | /* do something */ ; | |
1487 | } | |
1488 | #endif | |
1489 | ||
1490 | info = lookup_volume_info (root_dir); | |
1491 | ||
1492 | if (info == NULL || ! VOLINFO_STILL_VALID (root_dir, info)) | |
1493 | { | |
1494 | char name[ 256 ]; | |
1495 | DWORD serialnum; | |
1496 | DWORD maxcomp; | |
1497 | DWORD flags; | |
1498 | char type[ 256 ]; | |
1499 | ||
1500 | /* Info is not cached, or is stale. */ | |
1501 | if (!GetVolumeInformation (root_dir, | |
1502 | name, sizeof (name), | |
1503 | &serialnum, | |
1504 | &maxcomp, | |
1505 | &flags, | |
1506 | type, sizeof (type))) | |
1507 | return NULL; | |
1508 | ||
1509 | /* Cache the volume information for future use, overwriting existing | |
1510 | entry if present. */ | |
1511 | if (info == NULL) | |
1512 | { | |
1513 | info = (volume_info_data *) xmalloc (sizeof (volume_info_data)); | |
1514 | add_volume_info (root_dir, info); | |
1515 | } | |
1516 | else | |
1517 | { | |
a302c7ae AI |
1518 | xfree (info->name); |
1519 | xfree (info->type); | |
76b3903d GV |
1520 | } |
1521 | ||
a302c7ae | 1522 | info->name = xstrdup (name); |
76b3903d GV |
1523 | info->serialnum = serialnum; |
1524 | info->maxcomp = maxcomp; | |
1525 | info->flags = flags; | |
a302c7ae | 1526 | info->type = xstrdup (type); |
76b3903d GV |
1527 | info->timestamp = GetTickCount (); |
1528 | } | |
1529 | ||
1530 | return info; | |
1531 | } | |
480b0c5b GV |
1532 | |
1533 | /* Get information on the volume where name is held; set path pointer to | |
1534 | start of pathname in name (past UNC header\volume header if present). */ | |
1535 | int | |
1536 | get_volume_info (const char * name, const char ** pPath) | |
95ed0025 | 1537 | { |
480b0c5b GV |
1538 | char temp[MAX_PATH]; |
1539 | char *rootname = NULL; /* default to current volume */ | |
76b3903d | 1540 | volume_info_data * info; |
480b0c5b GV |
1541 | |
1542 | if (name == NULL) | |
1543 | return FALSE; | |
1544 | ||
1545 | /* find the root name of the volume if given */ | |
1546 | if (isalpha (name[0]) && name[1] == ':') | |
1547 | { | |
1548 | rootname = temp; | |
1549 | temp[0] = *name++; | |
1550 | temp[1] = *name++; | |
1551 | temp[2] = '\\'; | |
1552 | temp[3] = 0; | |
1553 | } | |
1554 | else if (IS_DIRECTORY_SEP (name[0]) && IS_DIRECTORY_SEP (name[1])) | |
95ed0025 | 1555 | { |
480b0c5b GV |
1556 | char *str = temp; |
1557 | int slashes = 4; | |
1558 | rootname = temp; | |
1559 | do | |
1560 | { | |
1561 | if (IS_DIRECTORY_SEP (*name) && --slashes == 0) | |
1562 | break; | |
1563 | *str++ = *name++; | |
1564 | } | |
1565 | while ( *name ); | |
1566 | ||
480b0c5b GV |
1567 | *str++ = '\\'; |
1568 | *str = 0; | |
95ed0025 | 1569 | } |
480b0c5b GV |
1570 | |
1571 | if (pPath) | |
1572 | *pPath = name; | |
177c0ea7 | 1573 | |
76b3903d GV |
1574 | info = GetCachedVolumeInformation (rootname); |
1575 | if (info != NULL) | |
95ed0025 | 1576 | { |
76b3903d GV |
1577 | /* Set global referenced by other functions. */ |
1578 | volume_info = *info; | |
480b0c5b | 1579 | return TRUE; |
95ed0025 | 1580 | } |
480b0c5b GV |
1581 | return FALSE; |
1582 | } | |
1583 | ||
1584 | /* Determine if volume is FAT format (ie. only supports short 8.3 | |
1585 | names); also set path pointer to start of pathname in name. */ | |
1586 | int | |
1587 | is_fat_volume (const char * name, const char ** pPath) | |
1588 | { | |
1589 | if (get_volume_info (name, pPath)) | |
1590 | return (volume_info.maxcomp == 12); | |
1591 | return FALSE; | |
1592 | } | |
1593 | ||
1594 | /* Map filename to a legal 8.3 name if necessary. */ | |
1595 | const char * | |
fbd6baed | 1596 | map_w32_filename (const char * name, const char ** pPath) |
480b0c5b GV |
1597 | { |
1598 | static char shortname[MAX_PATH]; | |
1599 | char * str = shortname; | |
1600 | char c; | |
480b0c5b | 1601 | char * path; |
76b3903d | 1602 | const char * save_name = name; |
480b0c5b | 1603 | |
ca149beb AI |
1604 | if (strlen (name) >= MAX_PATH) |
1605 | { | |
1606 | /* Return a filename which will cause callers to fail. */ | |
1607 | strcpy (shortname, "?"); | |
1608 | return shortname; | |
1609 | } | |
1610 | ||
a302c7ae | 1611 | if (is_fat_volume (name, (const char **)&path)) /* truncate to 8.3 */ |
95ed0025 | 1612 | { |
480b0c5b GV |
1613 | register int left = 8; /* maximum number of chars in part */ |
1614 | register int extn = 0; /* extension added? */ | |
1615 | register int dots = 2; /* maximum number of dots allowed */ | |
1616 | ||
1617 | while (name < path) | |
1618 | *str++ = *name++; /* skip past UNC header */ | |
1619 | ||
1620 | while ((c = *name++)) | |
1621 | { | |
1622 | switch ( c ) | |
1623 | { | |
1624 | case '\\': | |
1625 | case '/': | |
1626 | *str++ = '\\'; | |
1627 | extn = 0; /* reset extension flags */ | |
1628 | dots = 2; /* max 2 dots */ | |
1629 | left = 8; /* max length 8 for main part */ | |
1630 | break; | |
1631 | case ':': | |
1632 | *str++ = ':'; | |
1633 | extn = 0; /* reset extension flags */ | |
1634 | dots = 2; /* max 2 dots */ | |
1635 | left = 8; /* max length 8 for main part */ | |
1636 | break; | |
1637 | case '.': | |
1638 | if ( dots ) | |
1639 | { | |
1640 | /* Convert path components of the form .xxx to _xxx, | |
1641 | but leave . and .. as they are. This allows .emacs | |
1642 | to be read as _emacs, for example. */ | |
1643 | ||
1644 | if (! *name || | |
1645 | *name == '.' || | |
1646 | IS_DIRECTORY_SEP (*name)) | |
1647 | { | |
1648 | *str++ = '.'; | |
1649 | dots--; | |
1650 | } | |
1651 | else | |
1652 | { | |
1653 | *str++ = '_'; | |
1654 | left--; | |
1655 | dots = 0; | |
1656 | } | |
1657 | } | |
1658 | else if ( !extn ) | |
1659 | { | |
1660 | *str++ = '.'; | |
1661 | extn = 1; /* we've got an extension */ | |
1662 | left = 3; /* 3 chars in extension */ | |
1663 | } | |
1664 | else | |
1665 | { | |
1666 | /* any embedded dots after the first are converted to _ */ | |
1667 | *str++ = '_'; | |
1668 | } | |
1669 | break; | |
1670 | case '~': | |
1671 | case '#': /* don't lose these, they're important */ | |
1672 | if ( ! left ) | |
1673 | str[-1] = c; /* replace last character of part */ | |
1674 | /* FALLTHRU */ | |
1675 | default: | |
1676 | if ( left ) | |
1677 | { | |
1678 | *str++ = tolower (c); /* map to lower case (looks nicer) */ | |
1679 | left--; | |
1680 | dots = 0; /* started a path component */ | |
1681 | } | |
1682 | break; | |
1683 | } | |
1684 | } | |
1685 | *str = '\0'; | |
fc85cb29 RS |
1686 | } |
1687 | else | |
1688 | { | |
1689 | strcpy (shortname, name); | |
1690 | unixtodos_filename (shortname); | |
95ed0025 | 1691 | } |
480b0c5b GV |
1692 | |
1693 | if (pPath) | |
76b3903d | 1694 | *pPath = shortname + (path - save_name); |
480b0c5b | 1695 | |
fc85cb29 | 1696 | return shortname; |
480b0c5b GV |
1697 | } |
1698 | ||
b3308d2e KH |
1699 | static int |
1700 | is_exec (const char * name) | |
1701 | { | |
1702 | char * p = strrchr (name, '.'); | |
1703 | return | |
1704 | (p != NULL | |
1705 | && (stricmp (p, ".exe") == 0 || | |
1706 | stricmp (p, ".com") == 0 || | |
1707 | stricmp (p, ".bat") == 0 || | |
1708 | stricmp (p, ".cmd") == 0)); | |
1709 | } | |
1710 | ||
177c0ea7 | 1711 | /* Emulate the Unix directory procedures opendir, closedir, |
76b3903d GV |
1712 | and readdir. We can't use the procedures supplied in sysdep.c, |
1713 | so we provide them here. */ | |
1714 | ||
1715 | struct direct dir_static; /* simulated directory contents */ | |
1716 | static HANDLE dir_find_handle = INVALID_HANDLE_VALUE; | |
1717 | static int dir_is_fat; | |
1718 | static char dir_pathname[MAXPATHLEN+1]; | |
1719 | static WIN32_FIND_DATA dir_find_data; | |
1720 | ||
9d3355d1 GV |
1721 | /* Support shares on a network resource as subdirectories of a read-only |
1722 | root directory. */ | |
1723 | static HANDLE wnet_enum_handle = INVALID_HANDLE_VALUE; | |
e0c181dd | 1724 | HANDLE open_unc_volume (const char *); |
9d3355d1 GV |
1725 | char *read_unc_volume (HANDLE, char *, int); |
1726 | void close_unc_volume (HANDLE); | |
1727 | ||
76b3903d GV |
1728 | DIR * |
1729 | opendir (char *filename) | |
1730 | { | |
1731 | DIR *dirp; | |
1732 | ||
1733 | /* Opening is done by FindFirstFile. However, a read is inherent to | |
1734 | this operation, so we defer the open until read time. */ | |
1735 | ||
76b3903d GV |
1736 | if (dir_find_handle != INVALID_HANDLE_VALUE) |
1737 | return NULL; | |
9d3355d1 GV |
1738 | if (wnet_enum_handle != INVALID_HANDLE_VALUE) |
1739 | return NULL; | |
1740 | ||
1741 | if (is_unc_volume (filename)) | |
1742 | { | |
1743 | wnet_enum_handle = open_unc_volume (filename); | |
1744 | if (wnet_enum_handle == INVALID_HANDLE_VALUE) | |
1745 | return NULL; | |
1746 | } | |
1747 | ||
1748 | if (!(dirp = (DIR *) malloc (sizeof (DIR)))) | |
1749 | return NULL; | |
76b3903d GV |
1750 | |
1751 | dirp->dd_fd = 0; | |
1752 | dirp->dd_loc = 0; | |
1753 | dirp->dd_size = 0; | |
1754 | ||
1755 | strncpy (dir_pathname, map_w32_filename (filename, NULL), MAXPATHLEN); | |
1756 | dir_pathname[MAXPATHLEN] = '\0'; | |
1757 | dir_is_fat = is_fat_volume (filename, NULL); | |
1758 | ||
1759 | return dirp; | |
1760 | } | |
1761 | ||
1762 | void | |
1763 | closedir (DIR *dirp) | |
1764 | { | |
1765 | /* If we have a find-handle open, close it. */ | |
1766 | if (dir_find_handle != INVALID_HANDLE_VALUE) | |
1767 | { | |
1768 | FindClose (dir_find_handle); | |
1769 | dir_find_handle = INVALID_HANDLE_VALUE; | |
1770 | } | |
9d3355d1 GV |
1771 | else if (wnet_enum_handle != INVALID_HANDLE_VALUE) |
1772 | { | |
1773 | close_unc_volume (wnet_enum_handle); | |
1774 | wnet_enum_handle = INVALID_HANDLE_VALUE; | |
1775 | } | |
76b3903d GV |
1776 | xfree ((char *) dirp); |
1777 | } | |
1778 | ||
1779 | struct direct * | |
1780 | readdir (DIR *dirp) | |
1781 | { | |
9d3355d1 GV |
1782 | if (wnet_enum_handle != INVALID_HANDLE_VALUE) |
1783 | { | |
177c0ea7 JB |
1784 | if (!read_unc_volume (wnet_enum_handle, |
1785 | dir_find_data.cFileName, | |
9d3355d1 GV |
1786 | MAX_PATH)) |
1787 | return NULL; | |
1788 | } | |
76b3903d | 1789 | /* If we aren't dir_finding, do a find-first, otherwise do a find-next. */ |
9d3355d1 | 1790 | else if (dir_find_handle == INVALID_HANDLE_VALUE) |
76b3903d GV |
1791 | { |
1792 | char filename[MAXNAMLEN + 3]; | |
1793 | int ln; | |
1794 | ||
1795 | strcpy (filename, dir_pathname); | |
1796 | ln = strlen (filename) - 1; | |
1797 | if (!IS_DIRECTORY_SEP (filename[ln])) | |
1798 | strcat (filename, "\\"); | |
1799 | strcat (filename, "*"); | |
1800 | ||
1801 | dir_find_handle = FindFirstFile (filename, &dir_find_data); | |
1802 | ||
1803 | if (dir_find_handle == INVALID_HANDLE_VALUE) | |
1804 | return NULL; | |
1805 | } | |
1806 | else | |
1807 | { | |
1808 | if (!FindNextFile (dir_find_handle, &dir_find_data)) | |
1809 | return NULL; | |
1810 | } | |
177c0ea7 | 1811 | |
76b3903d GV |
1812 | /* Emacs never uses this value, so don't bother making it match |
1813 | value returned by stat(). */ | |
1814 | dir_static.d_ino = 1; | |
177c0ea7 | 1815 | |
76b3903d GV |
1816 | dir_static.d_reclen = sizeof (struct direct) - MAXNAMLEN + 3 + |
1817 | dir_static.d_namlen - dir_static.d_namlen % 4; | |
177c0ea7 | 1818 | |
76b3903d GV |
1819 | dir_static.d_namlen = strlen (dir_find_data.cFileName); |
1820 | strcpy (dir_static.d_name, dir_find_data.cFileName); | |
1821 | if (dir_is_fat) | |
1822 | _strlwr (dir_static.d_name); | |
1823 | else if (!NILP (Vw32_downcase_file_names)) | |
1824 | { | |
1825 | register char *p; | |
1826 | for (p = dir_static.d_name; *p; p++) | |
1827 | if (*p >= 'a' && *p <= 'z') | |
1828 | break; | |
1829 | if (!*p) | |
1830 | _strlwr (dir_static.d_name); | |
1831 | } | |
177c0ea7 | 1832 | |
76b3903d GV |
1833 | return &dir_static; |
1834 | } | |
1835 | ||
9d3355d1 | 1836 | HANDLE |
e0c181dd | 1837 | open_unc_volume (const char *path) |
9d3355d1 | 1838 | { |
177c0ea7 | 1839 | NETRESOURCE nr; |
9d3355d1 GV |
1840 | HANDLE henum; |
1841 | int result; | |
1842 | ||
177c0ea7 JB |
1843 | nr.dwScope = RESOURCE_GLOBALNET; |
1844 | nr.dwType = RESOURCETYPE_DISK; | |
1845 | nr.dwDisplayType = RESOURCEDISPLAYTYPE_SERVER; | |
1846 | nr.dwUsage = RESOURCEUSAGE_CONTAINER; | |
1847 | nr.lpLocalName = NULL; | |
6e602566 | 1848 | nr.lpRemoteName = (LPSTR)map_w32_filename (path, NULL); |
177c0ea7 JB |
1849 | nr.lpComment = NULL; |
1850 | nr.lpProvider = NULL; | |
9d3355d1 | 1851 | |
177c0ea7 | 1852 | result = WNetOpenEnum(RESOURCE_GLOBALNET, RESOURCETYPE_DISK, |
9d3355d1 GV |
1853 | RESOURCEUSAGE_CONNECTABLE, &nr, &henum); |
1854 | ||
1855 | if (result == NO_ERROR) | |
1856 | return henum; | |
1857 | else | |
1858 | return INVALID_HANDLE_VALUE; | |
1859 | } | |
1860 | ||
1861 | char * | |
1862 | read_unc_volume (HANDLE henum, char *readbuf, int size) | |
1863 | { | |
a302c7ae | 1864 | DWORD count; |
9d3355d1 | 1865 | int result; |
a302c7ae | 1866 | DWORD bufsize = 512; |
9d3355d1 GV |
1867 | char *buffer; |
1868 | char *ptr; | |
1869 | ||
1870 | count = 1; | |
1871 | buffer = alloca (bufsize); | |
1872 | result = WNetEnumResource (wnet_enum_handle, &count, buffer, &bufsize); | |
1873 | if (result != NO_ERROR) | |
1874 | return NULL; | |
1875 | ||
1876 | /* WNetEnumResource returns \\resource\share...skip forward to "share". */ | |
1877 | ptr = ((LPNETRESOURCE) buffer)->lpRemoteName; | |
1878 | ptr += 2; | |
1879 | while (*ptr && !IS_DIRECTORY_SEP (*ptr)) ptr++; | |
1880 | ptr++; | |
1881 | ||
1882 | strncpy (readbuf, ptr, size); | |
1883 | return readbuf; | |
1884 | } | |
1885 | ||
1886 | void | |
1887 | close_unc_volume (HANDLE henum) | |
1888 | { | |
1889 | if (henum != INVALID_HANDLE_VALUE) | |
1890 | WNetCloseEnum (henum); | |
1891 | } | |
1892 | ||
1893 | DWORD | |
e0c181dd | 1894 | unc_volume_file_attributes (const char *path) |
9d3355d1 GV |
1895 | { |
1896 | HANDLE henum; | |
1897 | DWORD attrs; | |
1898 | ||
1899 | henum = open_unc_volume (path); | |
1900 | if (henum == INVALID_HANDLE_VALUE) | |
1901 | return -1; | |
1902 | ||
1903 | attrs = FILE_ATTRIBUTE_READONLY | FILE_ATTRIBUTE_DIRECTORY; | |
1904 | ||
1905 | close_unc_volume (henum); | |
1906 | ||
1907 | return attrs; | |
1908 | } | |
1909 | ||
480b0c5b GV |
1910 | |
1911 | /* Shadow some MSVC runtime functions to map requests for long filenames | |
1912 | to reasonable short names if necessary. This was originally added to | |
177c0ea7 | 1913 | permit running Emacs on NT 3.1 on a FAT partition, which doesn't support |
480b0c5b GV |
1914 | long file names. */ |
1915 | ||
1916 | int | |
1917 | sys_access (const char * path, int mode) | |
1918 | { | |
b3308d2e KH |
1919 | DWORD attributes; |
1920 | ||
1921 | /* MSVC implementation doesn't recognize D_OK. */ | |
1922 | path = map_w32_filename (path, NULL); | |
9d3355d1 GV |
1923 | if (is_unc_volume (path)) |
1924 | { | |
1925 | attributes = unc_volume_file_attributes (path); | |
1926 | if (attributes == -1) { | |
1927 | errno = EACCES; | |
1928 | return -1; | |
1929 | } | |
1930 | } | |
1931 | else if ((attributes = GetFileAttributes (path)) == -1) | |
b3308d2e KH |
1932 | { |
1933 | /* Should try mapping GetLastError to errno; for now just indicate | |
1934 | that path doesn't exist. */ | |
1935 | errno = EACCES; | |
1936 | return -1; | |
1937 | } | |
1938 | if ((mode & X_OK) != 0 && !is_exec (path)) | |
1939 | { | |
1940 | errno = EACCES; | |
1941 | return -1; | |
1942 | } | |
1943 | if ((mode & W_OK) != 0 && (attributes & FILE_ATTRIBUTE_READONLY) != 0) | |
1944 | { | |
1945 | errno = EACCES; | |
1946 | return -1; | |
1947 | } | |
1948 | if ((mode & D_OK) != 0 && (attributes & FILE_ATTRIBUTE_DIRECTORY) == 0) | |
1949 | { | |
1950 | errno = EACCES; | |
1951 | return -1; | |
1952 | } | |
1953 | return 0; | |
480b0c5b GV |
1954 | } |
1955 | ||
1956 | int | |
1957 | sys_chdir (const char * path) | |
1958 | { | |
fbd6baed | 1959 | return _chdir (map_w32_filename (path, NULL)); |
480b0c5b GV |
1960 | } |
1961 | ||
1962 | int | |
1963 | sys_chmod (const char * path, int mode) | |
1964 | { | |
fbd6baed | 1965 | return _chmod (map_w32_filename (path, NULL), mode); |
480b0c5b GV |
1966 | } |
1967 | ||
2d5ab4bf EZ |
1968 | int |
1969 | sys_chown (const char *path, uid_t owner, gid_t group) | |
1970 | { | |
1971 | if (sys_chmod (path, _S_IREAD) == -1) /* check if file exists */ | |
1972 | return -1; | |
1973 | return 0; | |
1974 | } | |
1975 | ||
480b0c5b GV |
1976 | int |
1977 | sys_creat (const char * path, int mode) | |
1978 | { | |
fbd6baed | 1979 | return _creat (map_w32_filename (path, NULL), mode); |
480b0c5b GV |
1980 | } |
1981 | ||
1982 | FILE * | |
1983 | sys_fopen(const char * path, const char * mode) | |
1984 | { | |
1985 | int fd; | |
1986 | int oflag; | |
1987 | const char * mode_save = mode; | |
1988 | ||
1989 | /* Force all file handles to be non-inheritable. This is necessary to | |
1990 | ensure child processes don't unwittingly inherit handles that might | |
1991 | prevent future file access. */ | |
1992 | ||
1993 | if (mode[0] == 'r') | |
1994 | oflag = O_RDONLY; | |
1995 | else if (mode[0] == 'w' || mode[0] == 'a') | |
1996 | oflag = O_WRONLY | O_CREAT | O_TRUNC; | |
95ed0025 | 1997 | else |
480b0c5b GV |
1998 | return NULL; |
1999 | ||
2000 | /* Only do simplistic option parsing. */ | |
2001 | while (*++mode) | |
2002 | if (mode[0] == '+') | |
2003 | { | |
2004 | oflag &= ~(O_RDONLY | O_WRONLY); | |
2005 | oflag |= O_RDWR; | |
2006 | } | |
2007 | else if (mode[0] == 'b') | |
2008 | { | |
2009 | oflag &= ~O_TEXT; | |
2010 | oflag |= O_BINARY; | |
2011 | } | |
2012 | else if (mode[0] == 't') | |
2013 | { | |
2014 | oflag &= ~O_BINARY; | |
2015 | oflag |= O_TEXT; | |
2016 | } | |
2017 | else break; | |
2018 | ||
fbd6baed | 2019 | fd = _open (map_w32_filename (path, NULL), oflag | _O_NOINHERIT, 0644); |
480b0c5b GV |
2020 | if (fd < 0) |
2021 | return NULL; | |
2022 | ||
76b3903d | 2023 | return _fdopen (fd, mode_save); |
95ed0025 | 2024 | } |
480b0c5b | 2025 | |
76b3903d | 2026 | /* This only works on NTFS volumes, but is useful to have. */ |
480b0c5b | 2027 | int |
76b3903d | 2028 | sys_link (const char * old, const char * new) |
480b0c5b | 2029 | { |
76b3903d GV |
2030 | HANDLE fileh; |
2031 | int result = -1; | |
2032 | char oldname[MAX_PATH], newname[MAX_PATH]; | |
2033 | ||
2034 | if (old == NULL || new == NULL) | |
2035 | { | |
2036 | errno = ENOENT; | |
2037 | return -1; | |
2038 | } | |
2039 | ||
2040 | strcpy (oldname, map_w32_filename (old, NULL)); | |
2041 | strcpy (newname, map_w32_filename (new, NULL)); | |
2042 | ||
2043 | fileh = CreateFile (oldname, 0, 0, NULL, OPEN_EXISTING, | |
2044 | FILE_FLAG_BACKUP_SEMANTICS, NULL); | |
2045 | if (fileh != INVALID_HANDLE_VALUE) | |
2046 | { | |
2047 | int wlen; | |
2048 | ||
2049 | /* Confusingly, the "alternate" stream name field does not apply | |
2050 | when restoring a hard link, and instead contains the actual | |
2051 | stream data for the link (ie. the name of the link to create). | |
2052 | The WIN32_STREAM_ID structure before the cStreamName field is | |
2053 | the stream header, which is then immediately followed by the | |
2054 | stream data. */ | |
2055 | ||
2056 | struct { | |
2057 | WIN32_STREAM_ID wid; | |
2058 | WCHAR wbuffer[MAX_PATH]; /* extra space for link name */ | |
2059 | } data; | |
2060 | ||
2061 | wlen = MultiByteToWideChar (CP_ACP, MB_PRECOMPOSED, newname, -1, | |
2062 | data.wid.cStreamName, MAX_PATH); | |
2063 | if (wlen > 0) | |
2064 | { | |
2065 | LPVOID context = NULL; | |
2066 | DWORD wbytes = 0; | |
2067 | ||
2068 | data.wid.dwStreamId = BACKUP_LINK; | |
2069 | data.wid.dwStreamAttributes = 0; | |
2070 | data.wid.Size.LowPart = wlen * sizeof(WCHAR); | |
2071 | data.wid.Size.HighPart = 0; | |
2072 | data.wid.dwStreamNameSize = 0; | |
2073 | ||
2074 | if (BackupWrite (fileh, (LPBYTE)&data, | |
2075 | offsetof (WIN32_STREAM_ID, cStreamName) | |
2076 | + data.wid.Size.LowPart, | |
2077 | &wbytes, FALSE, FALSE, &context) | |
2078 | && BackupWrite (fileh, NULL, 0, &wbytes, TRUE, FALSE, &context)) | |
2079 | { | |
2080 | /* succeeded */ | |
2081 | result = 0; | |
2082 | } | |
2083 | else | |
2084 | { | |
2085 | /* Should try mapping GetLastError to errno; for now just | |
2086 | indicate a general error (eg. links not supported). */ | |
2087 | errno = EINVAL; // perhaps EMLINK? | |
2088 | } | |
2089 | } | |
2090 | ||
2091 | CloseHandle (fileh); | |
2092 | } | |
2093 | else | |
2094 | errno = ENOENT; | |
2095 | ||
2096 | return result; | |
480b0c5b GV |
2097 | } |
2098 | ||
2099 | int | |
2100 | sys_mkdir (const char * path) | |
2101 | { | |
fbd6baed | 2102 | return _mkdir (map_w32_filename (path, NULL)); |
480b0c5b GV |
2103 | } |
2104 | ||
9d1778b1 RS |
2105 | /* Because of long name mapping issues, we need to implement this |
2106 | ourselves. Also, MSVC's _mktemp returns NULL when it can't generate | |
2107 | a unique name, instead of setting the input template to an empty | |
2108 | string. | |
2109 | ||
2110 | Standard algorithm seems to be use pid or tid with a letter on the | |
2111 | front (in place of the 6 X's) and cycle through the letters to find a | |
2112 | unique name. We extend that to allow any reasonable character as the | |
2113 | first of the 6 X's. */ | |
480b0c5b GV |
2114 | char * |
2115 | sys_mktemp (char * template) | |
2116 | { | |
9d1778b1 RS |
2117 | char * p; |
2118 | int i; | |
2119 | unsigned uid = GetCurrentThreadId (); | |
2120 | static char first_char[] = "abcdefghijklmnopqrstuvwyz0123456789!%-_@#"; | |
2121 | ||
2122 | if (template == NULL) | |
2123 | return NULL; | |
2124 | p = template + strlen (template); | |
2125 | i = 5; | |
2126 | /* replace up to the last 5 X's with uid in decimal */ | |
2127 | while (--p >= template && p[0] == 'X' && --i >= 0) | |
2128 | { | |
2129 | p[0] = '0' + uid % 10; | |
2130 | uid /= 10; | |
2131 | } | |
2132 | ||
2133 | if (i < 0 && p[0] == 'X') | |
2134 | { | |
2135 | i = 0; | |
2136 | do | |
2137 | { | |
2138 | int save_errno = errno; | |
2139 | p[0] = first_char[i]; | |
2140 | if (sys_access (template, 0) < 0) | |
2141 | { | |
2142 | errno = save_errno; | |
2143 | return template; | |
2144 | } | |
2145 | } | |
2146 | while (++i < sizeof (first_char)); | |
2147 | } | |
2148 | ||
2149 | /* Template is badly formed or else we can't generate a unique name, | |
2150 | so return empty string */ | |
2151 | template[0] = 0; | |
2152 | return template; | |
480b0c5b GV |
2153 | } |
2154 | ||
2155 | int | |
2156 | sys_open (const char * path, int oflag, int mode) | |
2157 | { | |
302f0b29 GM |
2158 | const char* mpath = map_w32_filename (path, NULL); |
2159 | /* Try to open file without _O_CREAT, to be able to write to hidden | |
2160 | and system files. Force all file handles to be | |
2161 | non-inheritable. */ | |
2162 | int res = _open (mpath, (oflag & ~_O_CREAT) | _O_NOINHERIT, mode); | |
2163 | if (res >= 0) | |
2164 | return res; | |
2165 | return _open (mpath, oflag | _O_NOINHERIT, mode); | |
480b0c5b GV |
2166 | } |
2167 | ||
2168 | int | |
2169 | sys_rename (const char * oldname, const char * newname) | |
2170 | { | |
cfb5e855 | 2171 | BOOL result; |
b3308d2e | 2172 | char temp[MAX_PATH]; |
480b0c5b | 2173 | |
e9e23e23 | 2174 | /* MoveFile on Windows 95 doesn't correctly change the short file name |
5162ffce MB |
2175 | alias in a number of circumstances (it is not easy to predict when |
2176 | just by looking at oldname and newname, unfortunately). In these | |
2177 | cases, renaming through a temporary name avoids the problem. | |
2178 | ||
e9e23e23 | 2179 | A second problem on Windows 95 is that renaming through a temp name when |
5162ffce MB |
2180 | newname is uppercase fails (the final long name ends up in |
2181 | lowercase, although the short alias might be uppercase) UNLESS the | |
2182 | long temp name is not 8.3. | |
2183 | ||
e9e23e23 | 2184 | So, on Windows 95 we always rename through a temp name, and we make sure |
5162ffce | 2185 | the temp name has a long extension to ensure correct renaming. */ |
480b0c5b | 2186 | |
fbd6baed | 2187 | strcpy (temp, map_w32_filename (oldname, NULL)); |
480b0c5b | 2188 | |
76b3903d | 2189 | if (os_subtype == OS_WIN95) |
480b0c5b | 2190 | { |
b3308d2e | 2191 | char * o; |
480b0c5b | 2192 | char * p; |
b3308d2e KH |
2193 | int i = 0; |
2194 | ||
2195 | oldname = map_w32_filename (oldname, NULL); | |
2196 | if (o = strrchr (oldname, '\\')) | |
2197 | o++; | |
2198 | else | |
2199 | o = (char *) oldname; | |
480b0c5b | 2200 | |
480b0c5b GV |
2201 | if (p = strrchr (temp, '\\')) |
2202 | p++; | |
2203 | else | |
2204 | p = temp; | |
b3308d2e KH |
2205 | |
2206 | do | |
2207 | { | |
2208 | /* Force temp name to require a manufactured 8.3 alias - this | |
2209 | seems to make the second rename work properly. */ | |
f313ee82 | 2210 | sprintf (p, "_.%s.%u", o, i); |
b3308d2e | 2211 | i++; |
58f0cb7e | 2212 | result = rename (oldname, temp); |
b3308d2e KH |
2213 | } |
2214 | /* This loop must surely terminate! */ | |
cfb5e855 | 2215 | while (result < 0 && errno == EEXIST); |
58f0cb7e | 2216 | if (result < 0) |
480b0c5b GV |
2217 | return -1; |
2218 | } | |
2219 | ||
2220 | /* Emulate Unix behaviour - newname is deleted if it already exists | |
5162ffce | 2221 | (at least if it is a file; don't do this for directories). |
76b3903d | 2222 | |
b3308d2e KH |
2223 | Since we mustn't do this if we are just changing the case of the |
2224 | file name (we would end up deleting the file we are trying to | |
2225 | rename!), we let rename detect if the destination file already | |
2226 | exists - that way we avoid the possible pitfalls of trying to | |
2227 | determine ourselves whether two names really refer to the same | |
2228 | file, which is not always possible in the general case. (Consider | |
2229 | all the permutations of shared or subst'd drives, etc.) */ | |
2230 | ||
2231 | newname = map_w32_filename (newname, NULL); | |
eb9ea53f | 2232 | result = rename (temp, newname); |
b3308d2e KH |
2233 | |
2234 | if (result < 0 | |
cfb5e855 | 2235 | && errno == EEXIST |
b3308d2e KH |
2236 | && _chmod (newname, 0666) == 0 |
2237 | && _unlink (newname) == 0) | |
2238 | result = rename (temp, newname); | |
480b0c5b | 2239 | |
eb9ea53f | 2240 | return result; |
480b0c5b GV |
2241 | } |
2242 | ||
2243 | int | |
2244 | sys_rmdir (const char * path) | |
2245 | { | |
fbd6baed | 2246 | return _rmdir (map_w32_filename (path, NULL)); |
480b0c5b GV |
2247 | } |
2248 | ||
2249 | int | |
2250 | sys_unlink (const char * path) | |
2251 | { | |
16bb7578 GV |
2252 | path = map_w32_filename (path, NULL); |
2253 | ||
2254 | /* On Unix, unlink works without write permission. */ | |
2255 | _chmod (path, 0666); | |
2256 | return _unlink (path); | |
480b0c5b GV |
2257 | } |
2258 | ||
2259 | static FILETIME utc_base_ft; | |
2260 | static long double utc_base; | |
2261 | static int init = 0; | |
2262 | ||
2263 | static time_t | |
2264 | convert_time (FILETIME ft) | |
2265 | { | |
2266 | long double ret; | |
2267 | ||
2268 | if (!init) | |
2269 | { | |
2270 | /* Determine the delta between 1-Jan-1601 and 1-Jan-1970. */ | |
2271 | SYSTEMTIME st; | |
2272 | ||
2273 | st.wYear = 1970; | |
2274 | st.wMonth = 1; | |
2275 | st.wDay = 1; | |
2276 | st.wHour = 0; | |
2277 | st.wMinute = 0; | |
2278 | st.wSecond = 0; | |
2279 | st.wMilliseconds = 0; | |
2280 | ||
2281 | SystemTimeToFileTime (&st, &utc_base_ft); | |
2282 | utc_base = (long double) utc_base_ft.dwHighDateTime | |
69b72317 | 2283 | * 4096.0L * 1024.0L * 1024.0L + utc_base_ft.dwLowDateTime; |
480b0c5b GV |
2284 | init = 1; |
2285 | } | |
2286 | ||
2287 | if (CompareFileTime (&ft, &utc_base_ft) < 0) | |
2288 | return 0; | |
2289 | ||
69b72317 EZ |
2290 | ret = (long double) ft.dwHighDateTime |
2291 | * 4096.0L * 1024.0L * 1024.0L + ft.dwLowDateTime; | |
480b0c5b | 2292 | ret -= utc_base; |
69b72317 | 2293 | return (time_t) (ret * 1e-7L); |
480b0c5b GV |
2294 | } |
2295 | ||
480b0c5b GV |
2296 | void |
2297 | convert_from_time_t (time_t time, FILETIME * pft) | |
2298 | { | |
2299 | long double tmp; | |
2300 | ||
2301 | if (!init) | |
2302 | { | |
2303 | /* Determine the delta between 1-Jan-1601 and 1-Jan-1970. */ | |
2304 | SYSTEMTIME st; | |
2305 | ||
2306 | st.wYear = 1970; | |
2307 | st.wMonth = 1; | |
2308 | st.wDay = 1; | |
2309 | st.wHour = 0; | |
2310 | st.wMinute = 0; | |
2311 | st.wSecond = 0; | |
2312 | st.wMilliseconds = 0; | |
2313 | ||
2314 | SystemTimeToFileTime (&st, &utc_base_ft); | |
2315 | utc_base = (long double) utc_base_ft.dwHighDateTime | |
2316 | * 4096 * 1024 * 1024 + utc_base_ft.dwLowDateTime; | |
2317 | init = 1; | |
2318 | } | |
2319 | ||
2320 | /* time in 100ns units since 1-Jan-1601 */ | |
2321 | tmp = (long double) time * 1e7 + utc_base; | |
2322 | pft->dwHighDateTime = (DWORD) (tmp / (4096.0 * 1024 * 1024)); | |
16bb7578 | 2323 | pft->dwLowDateTime = (DWORD) (tmp - (4096.0 * 1024 * 1024) * pft->dwHighDateTime); |
480b0c5b | 2324 | } |
480b0c5b | 2325 | |
76b3903d GV |
2326 | #if 0 |
2327 | /* No reason to keep this; faking inode values either by hashing or even | |
2328 | using the file index from GetInformationByHandle, is not perfect and | |
2329 | so by default Emacs doesn't use the inode values on Windows. | |
2330 | Instead, we now determine file-truename correctly (except for | |
2331 | possible drive aliasing etc). */ | |
2332 | ||
2333 | /* Modified version of "PJW" algorithm (see the "Dragon" compiler book). */ | |
480b0c5b | 2334 | static unsigned |
76b3903d | 2335 | hashval (const unsigned char * str) |
480b0c5b GV |
2336 | { |
2337 | unsigned h = 0; | |
480b0c5b GV |
2338 | while (*str) |
2339 | { | |
2340 | h = (h << 4) + *str++; | |
76b3903d | 2341 | h ^= (h >> 28); |
480b0c5b GV |
2342 | } |
2343 | return h; | |
2344 | } | |
2345 | ||
2346 | /* Return the hash value of the canonical pathname, excluding the | |
2347 | drive/UNC header, to get a hopefully unique inode number. */ | |
76b3903d | 2348 | static DWORD |
480b0c5b GV |
2349 | generate_inode_val (const char * name) |
2350 | { | |
2351 | char fullname[ MAX_PATH ]; | |
2352 | char * p; | |
2353 | unsigned hash; | |
2354 | ||
76b3903d GV |
2355 | /* Get the truly canonical filename, if it exists. (Note: this |
2356 | doesn't resolve aliasing due to subst commands, or recognise hard | |
2357 | links. */ | |
2358 | if (!w32_get_long_filename ((char *)name, fullname, MAX_PATH)) | |
2359 | abort (); | |
2360 | ||
2361 | parse_root (fullname, &p); | |
fbd6baed | 2362 | /* Normal W32 filesystems are still case insensitive. */ |
480b0c5b | 2363 | _strlwr (p); |
76b3903d | 2364 | return hashval (p); |
480b0c5b GV |
2365 | } |
2366 | ||
76b3903d GV |
2367 | #endif |
2368 | ||
480b0c5b GV |
2369 | /* MSVC stat function can't cope with UNC names and has other bugs, so |
2370 | replace it with our own. This also allows us to calculate consistent | |
2371 | inode values without hacks in the main Emacs code. */ | |
2372 | int | |
2373 | stat (const char * path, struct stat * buf) | |
2374 | { | |
eb9ea53f | 2375 | char *name, *r; |
480b0c5b GV |
2376 | WIN32_FIND_DATA wfd; |
2377 | HANDLE fh; | |
76b3903d | 2378 | DWORD fake_inode; |
480b0c5b GV |
2379 | int permission; |
2380 | int len; | |
2381 | int rootdir = FALSE; | |
2382 | ||
2383 | if (path == NULL || buf == NULL) | |
2384 | { | |
2385 | errno = EFAULT; | |
2386 | return -1; | |
2387 | } | |
2388 | ||
fbd6baed | 2389 | name = (char *) map_w32_filename (path, &path); |
22189f79 EZ |
2390 | /* Must be valid filename, no wild cards or other invalid |
2391 | characters. We use _mbspbrk to support multibyte strings that | |
2392 | might look to strpbrk as if they included literal *, ?, and other | |
2393 | characters mentioned below that are disallowed by Windows | |
2394 | filesystems. */ | |
2395 | if (_mbspbrk (name, "*?|<>\"")) | |
480b0c5b GV |
2396 | { |
2397 | errno = ENOENT; | |
2398 | return -1; | |
2399 | } | |
2400 | ||
eb9ea53f GV |
2401 | /* If name is "c:/.." or "/.." then stat "c:/" or "/". */ |
2402 | r = IS_DEVICE_SEP (name[1]) ? &name[2] : name; | |
2403 | if (IS_DIRECTORY_SEP (r[0]) && r[1] == '.' && r[2] == '.' && r[3] == '\0') | |
2404 | { | |
2405 | r[1] = r[2] = '\0'; | |
2406 | } | |
2407 | ||
480b0c5b GV |
2408 | /* Remove trailing directory separator, unless name is the root |
2409 | directory of a drive or UNC volume in which case ensure there | |
2410 | is a trailing separator. */ | |
2411 | len = strlen (name); | |
2412 | rootdir = (path >= name + len - 1 | |
2413 | && (IS_DIRECTORY_SEP (*path) || *path == 0)); | |
2414 | name = strcpy (alloca (len + 2), name); | |
2415 | ||
9d3355d1 GV |
2416 | if (is_unc_volume (name)) |
2417 | { | |
2418 | DWORD attrs = unc_volume_file_attributes (name); | |
2419 | ||
2420 | if (attrs == -1) | |
2421 | return -1; | |
2422 | ||
2423 | memset (&wfd, 0, sizeof (wfd)); | |
2424 | wfd.dwFileAttributes = attrs; | |
2425 | wfd.ftCreationTime = utc_base_ft; | |
2426 | wfd.ftLastAccessTime = utc_base_ft; | |
2427 | wfd.ftLastWriteTime = utc_base_ft; | |
2428 | strcpy (wfd.cFileName, name); | |
2429 | } | |
2430 | else if (rootdir) | |
480b0c5b GV |
2431 | { |
2432 | if (!IS_DIRECTORY_SEP (name[len-1])) | |
2433 | strcat (name, "\\"); | |
2434 | if (GetDriveType (name) < 2) | |
2435 | { | |
2436 | errno = ENOENT; | |
2437 | return -1; | |
2438 | } | |
2439 | memset (&wfd, 0, sizeof (wfd)); | |
2440 | wfd.dwFileAttributes = FILE_ATTRIBUTE_DIRECTORY; | |
2441 | wfd.ftCreationTime = utc_base_ft; | |
2442 | wfd.ftLastAccessTime = utc_base_ft; | |
2443 | wfd.ftLastWriteTime = utc_base_ft; | |
2444 | strcpy (wfd.cFileName, name); | |
2445 | } | |
2446 | else | |
2447 | { | |
2448 | if (IS_DIRECTORY_SEP (name[len-1])) | |
2449 | name[len - 1] = 0; | |
76b3903d GV |
2450 | |
2451 | /* (This is hacky, but helps when doing file completions on | |
2452 | network drives.) Optimize by using information available from | |
2453 | active readdir if possible. */ | |
b19cc00c GV |
2454 | len = strlen (dir_pathname); |
2455 | if (IS_DIRECTORY_SEP (dir_pathname[len-1])) | |
2456 | len--; | |
76b3903d | 2457 | if (dir_find_handle != INVALID_HANDLE_VALUE |
b19cc00c | 2458 | && strnicmp (name, dir_pathname, len) == 0 |
76b3903d GV |
2459 | && IS_DIRECTORY_SEP (name[len]) |
2460 | && stricmp (name + len + 1, dir_static.d_name) == 0) | |
480b0c5b | 2461 | { |
76b3903d GV |
2462 | /* This was the last entry returned by readdir. */ |
2463 | wfd = dir_find_data; | |
2464 | } | |
2465 | else | |
2466 | { | |
2467 | fh = FindFirstFile (name, &wfd); | |
2468 | if (fh == INVALID_HANDLE_VALUE) | |
2469 | { | |
2470 | errno = ENOENT; | |
2471 | return -1; | |
2472 | } | |
2473 | FindClose (fh); | |
480b0c5b | 2474 | } |
480b0c5b GV |
2475 | } |
2476 | ||
93e0f0da JR |
2477 | if (!NILP (Vw32_get_true_file_attributes) |
2478 | /* No access rights required to get info. */ | |
2479 | && (fh = CreateFile (name, 0, 0, NULL, OPEN_EXISTING, | |
2480 | FILE_FLAG_BACKUP_SEMANTICS, NULL)) | |
2481 | != INVALID_HANDLE_VALUE) | |
480b0c5b | 2482 | { |
480b0c5b GV |
2483 | /* This is more accurate in terms of gettting the correct number |
2484 | of links, but is quite slow (it is noticable when Emacs is | |
2485 | making a list of file name completions). */ | |
2486 | BY_HANDLE_FILE_INFORMATION info; | |
2487 | ||
480b0c5b GV |
2488 | if (GetFileInformationByHandle (fh, &info)) |
2489 | { | |
480b0c5b | 2490 | buf->st_nlink = info.nNumberOfLinks; |
76b3903d GV |
2491 | /* Might as well use file index to fake inode values, but this |
2492 | is not guaranteed to be unique unless we keep a handle open | |
2493 | all the time (even then there are situations where it is | |
2494 | not unique). Reputedly, there are at most 48 bits of info | |
2495 | (on NTFS, presumably less on FAT). */ | |
2496 | fake_inode = info.nFileIndexLow ^ info.nFileIndexHigh; | |
480b0c5b GV |
2497 | } |
2498 | else | |
2499 | { | |
01f31dfb AI |
2500 | buf->st_nlink = 1; |
2501 | fake_inode = 0; | |
2502 | } | |
2503 | ||
93e0f0da | 2504 | if (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) |
01f31dfb | 2505 | { |
93e0f0da JR |
2506 | buf->st_mode = _S_IFDIR; |
2507 | } | |
2508 | else | |
2509 | { | |
2510 | switch (GetFileType (fh)) | |
2511 | { | |
2512 | case FILE_TYPE_DISK: | |
2513 | buf->st_mode = _S_IFREG; | |
2514 | break; | |
2515 | case FILE_TYPE_PIPE: | |
2516 | buf->st_mode = _S_IFIFO; | |
2517 | break; | |
2518 | case FILE_TYPE_CHAR: | |
2519 | case FILE_TYPE_UNKNOWN: | |
2520 | default: | |
2521 | buf->st_mode = _S_IFCHR; | |
2522 | } | |
480b0c5b | 2523 | } |
01f31dfb | 2524 | CloseHandle (fh); |
76b3903d GV |
2525 | } |
2526 | else | |
2527 | { | |
2528 | /* Don't bother to make this information more accurate. */ | |
93e0f0da | 2529 | buf->st_mode = (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) ? |
bc5fdfc7 | 2530 | _S_IFDIR : _S_IFREG; |
480b0c5b | 2531 | buf->st_nlink = 1; |
76b3903d GV |
2532 | fake_inode = 0; |
2533 | } | |
2534 | ||
2535 | #if 0 | |
2536 | /* Not sure if there is any point in this. */ | |
2537 | if (!NILP (Vw32_generate_fake_inodes)) | |
2538 | fake_inode = generate_inode_val (name); | |
2539 | else if (fake_inode == 0) | |
2540 | { | |
2541 | /* For want of something better, try to make everything unique. */ | |
2542 | static DWORD gen_num = 0; | |
2543 | fake_inode = ++gen_num; | |
480b0c5b | 2544 | } |
76b3903d GV |
2545 | #endif |
2546 | ||
2547 | /* MSVC defines _ino_t to be short; other libc's might not. */ | |
2548 | if (sizeof (buf->st_ino) == 2) | |
2549 | buf->st_ino = fake_inode ^ (fake_inode >> 16); | |
2550 | else | |
2551 | buf->st_ino = fake_inode; | |
480b0c5b GV |
2552 | |
2553 | /* consider files to belong to current user */ | |
2554 | buf->st_uid = the_passwd.pw_uid; | |
2555 | buf->st_gid = the_passwd.pw_gid; | |
2556 | ||
fbd6baed | 2557 | /* volume_info is set indirectly by map_w32_filename */ |
480b0c5b GV |
2558 | buf->st_dev = volume_info.serialnum; |
2559 | buf->st_rdev = volume_info.serialnum; | |
2560 | ||
480b0c5b GV |
2561 | |
2562 | buf->st_size = wfd.nFileSizeLow; | |
2563 | ||
2564 | /* Convert timestamps to Unix format. */ | |
2565 | buf->st_mtime = convert_time (wfd.ftLastWriteTime); | |
2566 | buf->st_atime = convert_time (wfd.ftLastAccessTime); | |
2567 | if (buf->st_atime == 0) buf->st_atime = buf->st_mtime; | |
2568 | buf->st_ctime = convert_time (wfd.ftCreationTime); | |
2569 | if (buf->st_ctime == 0) buf->st_ctime = buf->st_mtime; | |
2570 | ||
2571 | /* determine rwx permissions */ | |
2572 | if (wfd.dwFileAttributes & FILE_ATTRIBUTE_READONLY) | |
2573 | permission = _S_IREAD; | |
2574 | else | |
2575 | permission = _S_IREAD | _S_IWRITE; | |
177c0ea7 | 2576 | |
480b0c5b GV |
2577 | if (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) |
2578 | permission |= _S_IEXEC; | |
b3308d2e KH |
2579 | else if (is_exec (name)) |
2580 | permission |= _S_IEXEC; | |
480b0c5b GV |
2581 | |
2582 | buf->st_mode |= permission | (permission >> 3) | (permission >> 6); | |
2583 | ||
2584 | return 0; | |
2585 | } | |
2586 | ||
16bb7578 GV |
2587 | /* Provide fstat and utime as well as stat for consistent handling of |
2588 | file timestamps. */ | |
2589 | int | |
2590 | fstat (int desc, struct stat * buf) | |
2591 | { | |
2592 | HANDLE fh = (HANDLE) _get_osfhandle (desc); | |
2593 | BY_HANDLE_FILE_INFORMATION info; | |
2594 | DWORD fake_inode; | |
2595 | int permission; | |
2596 | ||
2597 | switch (GetFileType (fh) & ~FILE_TYPE_REMOTE) | |
2598 | { | |
2599 | case FILE_TYPE_DISK: | |
2600 | buf->st_mode = _S_IFREG; | |
2601 | if (!GetFileInformationByHandle (fh, &info)) | |
2602 | { | |
2603 | errno = EACCES; | |
2604 | return -1; | |
2605 | } | |
2606 | break; | |
2607 | case FILE_TYPE_PIPE: | |
2608 | buf->st_mode = _S_IFIFO; | |
2609 | goto non_disk; | |
2610 | case FILE_TYPE_CHAR: | |
2611 | case FILE_TYPE_UNKNOWN: | |
2612 | default: | |
2613 | buf->st_mode = _S_IFCHR; | |
2614 | non_disk: | |
2615 | memset (&info, 0, sizeof (info)); | |
2616 | info.dwFileAttributes = 0; | |
2617 | info.ftCreationTime = utc_base_ft; | |
2618 | info.ftLastAccessTime = utc_base_ft; | |
2619 | info.ftLastWriteTime = utc_base_ft; | |
2620 | } | |
2621 | ||
2622 | if (info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) | |
16bb7578 | 2623 | buf->st_mode = _S_IFDIR; |
93e0f0da JR |
2624 | |
2625 | buf->st_nlink = info.nNumberOfLinks; | |
2626 | /* Might as well use file index to fake inode values, but this | |
2627 | is not guaranteed to be unique unless we keep a handle open | |
2628 | all the time (even then there are situations where it is | |
2629 | not unique). Reputedly, there are at most 48 bits of info | |
2630 | (on NTFS, presumably less on FAT). */ | |
2631 | fake_inode = info.nFileIndexLow ^ info.nFileIndexHigh; | |
16bb7578 GV |
2632 | |
2633 | /* MSVC defines _ino_t to be short; other libc's might not. */ | |
2634 | if (sizeof (buf->st_ino) == 2) | |
2635 | buf->st_ino = fake_inode ^ (fake_inode >> 16); | |
2636 | else | |
2637 | buf->st_ino = fake_inode; | |
2638 | ||
2639 | /* consider files to belong to current user */ | |
2640 | buf->st_uid = 0; | |
2641 | buf->st_gid = 0; | |
2642 | ||
2643 | buf->st_dev = info.dwVolumeSerialNumber; | |
2644 | buf->st_rdev = info.dwVolumeSerialNumber; | |
2645 | ||
2646 | buf->st_size = info.nFileSizeLow; | |
2647 | ||
2648 | /* Convert timestamps to Unix format. */ | |
2649 | buf->st_mtime = convert_time (info.ftLastWriteTime); | |
2650 | buf->st_atime = convert_time (info.ftLastAccessTime); | |
2651 | if (buf->st_atime == 0) buf->st_atime = buf->st_mtime; | |
2652 | buf->st_ctime = convert_time (info.ftCreationTime); | |
2653 | if (buf->st_ctime == 0) buf->st_ctime = buf->st_mtime; | |
2654 | ||
2655 | /* determine rwx permissions */ | |
2656 | if (info.dwFileAttributes & FILE_ATTRIBUTE_READONLY) | |
2657 | permission = _S_IREAD; | |
2658 | else | |
2659 | permission = _S_IREAD | _S_IWRITE; | |
177c0ea7 | 2660 | |
16bb7578 GV |
2661 | if (info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) |
2662 | permission |= _S_IEXEC; | |
2663 | else | |
2664 | { | |
2665 | #if 0 /* no way of knowing the filename */ | |
2666 | char * p = strrchr (name, '.'); | |
2667 | if (p != NULL && | |
2668 | (stricmp (p, ".exe") == 0 || | |
2669 | stricmp (p, ".com") == 0 || | |
2670 | stricmp (p, ".bat") == 0 || | |
2671 | stricmp (p, ".cmd") == 0)) | |
2672 | permission |= _S_IEXEC; | |
2673 | #endif | |
2674 | } | |
2675 | ||
2676 | buf->st_mode |= permission | (permission >> 3) | (permission >> 6); | |
2677 | ||
2678 | return 0; | |
2679 | } | |
2680 | ||
2681 | int | |
2682 | utime (const char *name, struct utimbuf *times) | |
2683 | { | |
2684 | struct utimbuf deftime; | |
2685 | HANDLE fh; | |
2686 | FILETIME mtime; | |
2687 | FILETIME atime; | |
2688 | ||
2689 | if (times == NULL) | |
2690 | { | |
2691 | deftime.modtime = deftime.actime = time (NULL); | |
2692 | times = &deftime; | |
2693 | } | |
2694 | ||
2695 | /* Need write access to set times. */ | |
2696 | fh = CreateFile (name, GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, | |
2697 | 0, OPEN_EXISTING, 0, NULL); | |
2698 | if (fh) | |
2699 | { | |
2700 | convert_from_time_t (times->actime, &atime); | |
2701 | convert_from_time_t (times->modtime, &mtime); | |
2702 | if (!SetFileTime (fh, NULL, &atime, &mtime)) | |
2703 | { | |
2704 | CloseHandle (fh); | |
2705 | errno = EACCES; | |
2706 | return -1; | |
2707 | } | |
2708 | CloseHandle (fh); | |
2709 | } | |
2710 | else | |
2711 | { | |
2712 | errno = EINVAL; | |
2713 | return -1; | |
2714 | } | |
2715 | return 0; | |
2716 | } | |
2717 | ||
480b0c5b GV |
2718 | #ifdef HAVE_SOCKETS |
2719 | ||
2720 | /* Wrappers for winsock functions to map between our file descriptors | |
2721 | and winsock's handles; also set h_errno for convenience. | |
2722 | ||
2723 | To allow Emacs to run on systems which don't have winsock support | |
2724 | installed, we dynamically link to winsock on startup if present, and | |
2725 | otherwise provide the minimum necessary functionality | |
2726 | (eg. gethostname). */ | |
2727 | ||
2728 | /* function pointers for relevant socket functions */ | |
2729 | int (PASCAL *pfn_WSAStartup) (WORD wVersionRequired, LPWSADATA lpWSAData); | |
2730 | void (PASCAL *pfn_WSASetLastError) (int iError); | |
2731 | int (PASCAL *pfn_WSAGetLastError) (void); | |
26fb7bc4 | 2732 | int (PASCAL *pfn_WSAEventSelect) (SOCKET s, HANDLE hEventObject, long lNetworkEvents); |
64570b36 KS |
2733 | HANDLE (PASCAL *pfn_WSACreateEvent) (void); |
2734 | int (PASCAL *pfn_WSACloseEvent) (HANDLE hEvent); | |
480b0c5b GV |
2735 | int (PASCAL *pfn_socket) (int af, int type, int protocol); |
2736 | int (PASCAL *pfn_bind) (SOCKET s, const struct sockaddr *addr, int namelen); | |
2737 | int (PASCAL *pfn_connect) (SOCKET s, const struct sockaddr *addr, int namelen); | |
2738 | int (PASCAL *pfn_ioctlsocket) (SOCKET s, long cmd, u_long *argp); | |
2739 | int (PASCAL *pfn_recv) (SOCKET s, char * buf, int len, int flags); | |
2740 | int (PASCAL *pfn_send) (SOCKET s, const char * buf, int len, int flags); | |
2741 | int (PASCAL *pfn_closesocket) (SOCKET s); | |
2742 | int (PASCAL *pfn_shutdown) (SOCKET s, int how); | |
2743 | int (PASCAL *pfn_WSACleanup) (void); | |
2744 | ||
2745 | u_short (PASCAL *pfn_htons) (u_short hostshort); | |
2746 | u_short (PASCAL *pfn_ntohs) (u_short netshort); | |
2747 | unsigned long (PASCAL *pfn_inet_addr) (const char * cp); | |
2748 | int (PASCAL *pfn_gethostname) (char * name, int namelen); | |
2749 | struct hostent * (PASCAL *pfn_gethostbyname) (const char * name); | |
2750 | struct servent * (PASCAL *pfn_getservbyname) (const char * name, const char * proto); | |
ecd270eb | 2751 | int (PASCAL *pfn_getpeername) (SOCKET s, struct sockaddr *addr, int * namelen); |
962955c5 JR |
2752 | int (PASCAL *pfn_setsockopt) (SOCKET s, int level, int optname, |
2753 | const char * optval, int optlen); | |
2754 | int (PASCAL *pfn_listen) (SOCKET s, int backlog); | |
2755 | int (PASCAL *pfn_getsockname) (SOCKET s, struct sockaddr * name, | |
2756 | int * namelen); | |
2757 | SOCKET (PASCAL *pfn_accept) (SOCKET s, struct sockaddr * addr, int * addrlen); | |
2758 | int (PASCAL *pfn_recvfrom) (SOCKET s, char * buf, int len, int flags, | |
2759 | struct sockaddr * from, int * fromlen); | |
2760 | int (PASCAL *pfn_sendto) (SOCKET s, const char * buf, int len, int flags, | |
2761 | const struct sockaddr * to, int tolen); | |
2762 | ||
f1614061 RS |
2763 | /* SetHandleInformation is only needed to make sockets non-inheritable. */ |
2764 | BOOL (WINAPI *pfn_SetHandleInformation) (HANDLE object, DWORD mask, DWORD flags); | |
2765 | #ifndef HANDLE_FLAG_INHERIT | |
2766 | #define HANDLE_FLAG_INHERIT 1 | |
2767 | #endif | |
480b0c5b | 2768 | |
f249a012 RS |
2769 | HANDLE winsock_lib; |
2770 | static int winsock_inuse; | |
480b0c5b | 2771 | |
f249a012 | 2772 | BOOL |
480b0c5b GV |
2773 | term_winsock (void) |
2774 | { | |
f249a012 | 2775 | if (winsock_lib != NULL && winsock_inuse == 0) |
480b0c5b | 2776 | { |
f249a012 RS |
2777 | /* Not sure what would cause WSAENETDOWN, or even if it can happen |
2778 | after WSAStartup returns successfully, but it seems reasonable | |
2779 | to allow unloading winsock anyway in that case. */ | |
2780 | if (pfn_WSACleanup () == 0 || | |
2781 | pfn_WSAGetLastError () == WSAENETDOWN) | |
2782 | { | |
2783 | if (FreeLibrary (winsock_lib)) | |
2784 | winsock_lib = NULL; | |
2785 | return TRUE; | |
2786 | } | |
480b0c5b | 2787 | } |
f249a012 | 2788 | return FALSE; |
480b0c5b GV |
2789 | } |
2790 | ||
f249a012 RS |
2791 | BOOL |
2792 | init_winsock (int load_now) | |
480b0c5b GV |
2793 | { |
2794 | WSADATA winsockData; | |
2795 | ||
f249a012 RS |
2796 | if (winsock_lib != NULL) |
2797 | return TRUE; | |
f1614061 RS |
2798 | |
2799 | pfn_SetHandleInformation = NULL; | |
2800 | pfn_SetHandleInformation | |
2801 | = (void *) GetProcAddress (GetModuleHandle ("kernel32.dll"), | |
2802 | "SetHandleInformation"); | |
2803 | ||
64570b36 | 2804 | winsock_lib = LoadLibrary ("Ws2_32.dll"); |
480b0c5b GV |
2805 | |
2806 | if (winsock_lib != NULL) | |
2807 | { | |
2808 | /* dynamically link to socket functions */ | |
2809 | ||
2810 | #define LOAD_PROC(fn) \ | |
2811 | if ((pfn_##fn = (void *) GetProcAddress (winsock_lib, #fn)) == NULL) \ | |
2812 | goto fail; | |
2813 | ||
2814 | LOAD_PROC( WSAStartup ); | |
2815 | LOAD_PROC( WSASetLastError ); | |
2816 | LOAD_PROC( WSAGetLastError ); | |
26fb7bc4 | 2817 | LOAD_PROC( WSAEventSelect ); |
64570b36 KS |
2818 | LOAD_PROC( WSACreateEvent ); |
2819 | LOAD_PROC( WSACloseEvent ); | |
480b0c5b GV |
2820 | LOAD_PROC( socket ); |
2821 | LOAD_PROC( bind ); | |
2822 | LOAD_PROC( connect ); | |
2823 | LOAD_PROC( ioctlsocket ); | |
2824 | LOAD_PROC( recv ); | |
2825 | LOAD_PROC( send ); | |
2826 | LOAD_PROC( closesocket ); | |
2827 | LOAD_PROC( shutdown ); | |
2828 | LOAD_PROC( htons ); | |
2829 | LOAD_PROC( ntohs ); | |
2830 | LOAD_PROC( inet_addr ); | |
2831 | LOAD_PROC( gethostname ); | |
2832 | LOAD_PROC( gethostbyname ); | |
2833 | LOAD_PROC( getservbyname ); | |
ecd270eb | 2834 | LOAD_PROC( getpeername ); |
480b0c5b | 2835 | LOAD_PROC( WSACleanup ); |
962955c5 JR |
2836 | LOAD_PROC( setsockopt ); |
2837 | LOAD_PROC( listen ); | |
2838 | LOAD_PROC( getsockname ); | |
2839 | LOAD_PROC( accept ); | |
2840 | LOAD_PROC( recvfrom ); | |
2841 | LOAD_PROC( sendto ); | |
f249a012 RS |
2842 | #undef LOAD_PROC |
2843 | ||
480b0c5b GV |
2844 | /* specify version 1.1 of winsock */ |
2845 | if (pfn_WSAStartup (0x101, &winsockData) == 0) | |
2846 | { | |
f249a012 RS |
2847 | if (winsockData.wVersion != 0x101) |
2848 | goto fail; | |
2849 | ||
2850 | if (!load_now) | |
2851 | { | |
2852 | /* Report that winsock exists and is usable, but leave | |
2853 | socket functions disabled. I am assuming that calling | |
2854 | WSAStartup does not require any network interaction, | |
2855 | and in particular does not cause or require a dial-up | |
2856 | connection to be established. */ | |
2857 | ||
2858 | pfn_WSACleanup (); | |
2859 | FreeLibrary (winsock_lib); | |
2860 | winsock_lib = NULL; | |
2861 | } | |
2862 | winsock_inuse = 0; | |
2863 | return TRUE; | |
480b0c5b GV |
2864 | } |
2865 | ||
2866 | fail: | |
2867 | FreeLibrary (winsock_lib); | |
f249a012 | 2868 | winsock_lib = NULL; |
480b0c5b | 2869 | } |
f249a012 RS |
2870 | |
2871 | return FALSE; | |
480b0c5b GV |
2872 | } |
2873 | ||
2874 | ||
2875 | int h_errno = 0; | |
2876 | ||
2877 | /* function to set h_errno for compatability; map winsock error codes to | |
2878 | normal system codes where they overlap (non-overlapping definitions | |
2879 | are already in <sys/socket.h> */ | |
9bfb11f9 KS |
2880 | static void |
2881 | set_errno () | |
480b0c5b | 2882 | { |
f249a012 | 2883 | if (winsock_lib == NULL) |
480b0c5b GV |
2884 | h_errno = EINVAL; |
2885 | else | |
2886 | h_errno = pfn_WSAGetLastError (); | |
2887 | ||
2888 | switch (h_errno) | |
2889 | { | |
2890 | case WSAEACCES: h_errno = EACCES; break; | |
2891 | case WSAEBADF: h_errno = EBADF; break; | |
2892 | case WSAEFAULT: h_errno = EFAULT; break; | |
2893 | case WSAEINTR: h_errno = EINTR; break; | |
2894 | case WSAEINVAL: h_errno = EINVAL; break; | |
2895 | case WSAEMFILE: h_errno = EMFILE; break; | |
2896 | case WSAENAMETOOLONG: h_errno = ENAMETOOLONG; break; | |
2897 | case WSAENOTEMPTY: h_errno = ENOTEMPTY; break; | |
2898 | } | |
2899 | errno = h_errno; | |
2900 | } | |
2901 | ||
9bfb11f9 KS |
2902 | static void |
2903 | check_errno () | |
480b0c5b | 2904 | { |
f249a012 | 2905 | if (h_errno == 0 && winsock_lib != NULL) |
480b0c5b GV |
2906 | pfn_WSASetLastError (0); |
2907 | } | |
2908 | ||
d8fcc1b9 AI |
2909 | /* Extend strerror to handle the winsock-specific error codes. */ |
2910 | struct { | |
2911 | int errnum; | |
2912 | char * msg; | |
2913 | } _wsa_errlist[] = { | |
2914 | WSAEINTR , "Interrupted function call", | |
2915 | WSAEBADF , "Bad file descriptor", | |
2916 | WSAEACCES , "Permission denied", | |
2917 | WSAEFAULT , "Bad address", | |
2918 | WSAEINVAL , "Invalid argument", | |
2919 | WSAEMFILE , "Too many open files", | |
177c0ea7 | 2920 | |
d8fcc1b9 AI |
2921 | WSAEWOULDBLOCK , "Resource temporarily unavailable", |
2922 | WSAEINPROGRESS , "Operation now in progress", | |
2923 | WSAEALREADY , "Operation already in progress", | |
2924 | WSAENOTSOCK , "Socket operation on non-socket", | |
2925 | WSAEDESTADDRREQ , "Destination address required", | |
2926 | WSAEMSGSIZE , "Message too long", | |
2927 | WSAEPROTOTYPE , "Protocol wrong type for socket", | |
2928 | WSAENOPROTOOPT , "Bad protocol option", | |
2929 | WSAEPROTONOSUPPORT , "Protocol not supported", | |
2930 | WSAESOCKTNOSUPPORT , "Socket type not supported", | |
2931 | WSAEOPNOTSUPP , "Operation not supported", | |
2932 | WSAEPFNOSUPPORT , "Protocol family not supported", | |
2933 | WSAEAFNOSUPPORT , "Address family not supported by protocol family", | |
2934 | WSAEADDRINUSE , "Address already in use", | |
2935 | WSAEADDRNOTAVAIL , "Cannot assign requested address", | |
2936 | WSAENETDOWN , "Network is down", | |
2937 | WSAENETUNREACH , "Network is unreachable", | |
2938 | WSAENETRESET , "Network dropped connection on reset", | |
2939 | WSAECONNABORTED , "Software caused connection abort", | |
2940 | WSAECONNRESET , "Connection reset by peer", | |
2941 | WSAENOBUFS , "No buffer space available", | |
2942 | WSAEISCONN , "Socket is already connected", | |
2943 | WSAENOTCONN , "Socket is not connected", | |
2944 | WSAESHUTDOWN , "Cannot send after socket shutdown", | |
2945 | WSAETOOMANYREFS , "Too many references", /* not sure */ | |
2946 | WSAETIMEDOUT , "Connection timed out", | |
2947 | WSAECONNREFUSED , "Connection refused", | |
2948 | WSAELOOP , "Network loop", /* not sure */ | |
2949 | WSAENAMETOOLONG , "Name is too long", | |
2950 | WSAEHOSTDOWN , "Host is down", | |
2951 | WSAEHOSTUNREACH , "No route to host", | |
2952 | WSAENOTEMPTY , "Buffer not empty", /* not sure */ | |
2953 | WSAEPROCLIM , "Too many processes", | |
2954 | WSAEUSERS , "Too many users", /* not sure */ | |
2955 | WSAEDQUOT , "Double quote in host name", /* really not sure */ | |
2956 | WSAESTALE , "Data is stale", /* not sure */ | |
2957 | WSAEREMOTE , "Remote error", /* not sure */ | |
177c0ea7 | 2958 | |
d8fcc1b9 AI |
2959 | WSASYSNOTREADY , "Network subsystem is unavailable", |
2960 | WSAVERNOTSUPPORTED , "WINSOCK.DLL version out of range", | |
2961 | WSANOTINITIALISED , "Winsock not initialized successfully", | |
2962 | WSAEDISCON , "Graceful shutdown in progress", | |
2963 | #ifdef WSAENOMORE | |
2964 | WSAENOMORE , "No more operations allowed", /* not sure */ | |
2965 | WSAECANCELLED , "Operation cancelled", /* not sure */ | |
2966 | WSAEINVALIDPROCTABLE , "Invalid procedure table from service provider", | |
2967 | WSAEINVALIDPROVIDER , "Invalid service provider version number", | |
2968 | WSAEPROVIDERFAILEDINIT , "Unable to initialize a service provider", | |
2969 | WSASYSCALLFAILURE , "System call failured", | |
2970 | WSASERVICE_NOT_FOUND , "Service not found", /* not sure */ | |
2971 | WSATYPE_NOT_FOUND , "Class type not found", | |
2972 | WSA_E_NO_MORE , "No more resources available", /* really not sure */ | |
2973 | WSA_E_CANCELLED , "Operation already cancelled", /* really not sure */ | |
2974 | WSAEREFUSED , "Operation refused", /* not sure */ | |
2975 | #endif | |
177c0ea7 | 2976 | |
d8fcc1b9 AI |
2977 | WSAHOST_NOT_FOUND , "Host not found", |
2978 | WSATRY_AGAIN , "Authoritative host not found during name lookup", | |
2979 | WSANO_RECOVERY , "Non-recoverable error during name lookup", | |
2980 | WSANO_DATA , "Valid name, no data record of requested type", | |
2981 | ||
2982 | -1, NULL | |
2983 | }; | |
2984 | ||
2985 | char * | |
2986 | sys_strerror(int error_no) | |
2987 | { | |
2988 | int i; | |
2989 | static char unknown_msg[40]; | |
2990 | ||
a302c7ae AI |
2991 | if (error_no >= 0 && error_no < sys_nerr) |
2992 | return sys_errlist[error_no]; | |
d8fcc1b9 AI |
2993 | |
2994 | for (i = 0; _wsa_errlist[i].errnum >= 0; i++) | |
2995 | if (_wsa_errlist[i].errnum == error_no) | |
2996 | return _wsa_errlist[i].msg; | |
2997 | ||
2998 | sprintf(unknown_msg, "Unidentified error: %d", error_no); | |
2999 | return unknown_msg; | |
3000 | } | |
3001 | ||
480b0c5b GV |
3002 | /* [andrewi 3-May-96] I've had conflicting results using both methods, |
3003 | but I believe the method of keeping the socket handle separate (and | |
3004 | insuring it is not inheritable) is the correct one. */ | |
3005 | ||
3006 | //#define SOCK_REPLACE_HANDLE | |
3007 | ||
3008 | #ifdef SOCK_REPLACE_HANDLE | |
3009 | #define SOCK_HANDLE(fd) ((SOCKET) _get_osfhandle (fd)) | |
3010 | #else | |
3011 | #define SOCK_HANDLE(fd) ((SOCKET) fd_info[fd].hnd) | |
3012 | #endif | |
3013 | ||
962955c5 JR |
3014 | int socket_to_fd (SOCKET s); |
3015 | ||
480b0c5b GV |
3016 | int |
3017 | sys_socket(int af, int type, int protocol) | |
3018 | { | |
962955c5 | 3019 | SOCKET s; |
480b0c5b | 3020 | |
f249a012 | 3021 | if (winsock_lib == NULL) |
480b0c5b GV |
3022 | { |
3023 | h_errno = ENETDOWN; | |
3024 | return INVALID_SOCKET; | |
3025 | } | |
3026 | ||
3027 | check_errno (); | |
3028 | ||
3029 | /* call the real socket function */ | |
962955c5 | 3030 | s = pfn_socket (af, type, protocol); |
177c0ea7 | 3031 | |
480b0c5b | 3032 | if (s != INVALID_SOCKET) |
962955c5 | 3033 | return socket_to_fd (s); |
480b0c5b | 3034 | |
962955c5 JR |
3035 | set_errno (); |
3036 | return -1; | |
3037 | } | |
3038 | ||
3039 | /* Convert a SOCKET to a file descriptor. */ | |
3040 | int | |
3041 | socket_to_fd (SOCKET s) | |
3042 | { | |
3043 | int fd; | |
3044 | child_process * cp; | |
3045 | ||
3046 | /* Although under NT 3.5 _open_osfhandle will accept a socket | |
3047 | handle, if opened with SO_OPENTYPE == SO_SYNCHRONOUS_NONALERT, | |
3048 | that does not work under NT 3.1. However, we can get the same | |
3049 | effect by using a backdoor function to replace an existing | |
3050 | descriptor handle with the one we want. */ | |
3051 | ||
3052 | /* allocate a file descriptor (with appropriate flags) */ | |
3053 | fd = _open ("NUL:", _O_RDWR); | |
3054 | if (fd >= 0) | |
3055 | { | |
480b0c5b | 3056 | #ifdef SOCK_REPLACE_HANDLE |
962955c5 JR |
3057 | /* now replace handle to NUL with our socket handle */ |
3058 | CloseHandle ((HANDLE) _get_osfhandle (fd)); | |
3059 | _free_osfhnd (fd); | |
3060 | _set_osfhnd (fd, s); | |
3061 | /* setmode (fd, _O_BINARY); */ | |
480b0c5b | 3062 | #else |
962955c5 JR |
3063 | /* Make a non-inheritable copy of the socket handle. Note |
3064 | that it is possible that sockets aren't actually kernel | |
3065 | handles, which appears to be the case on Windows 9x when | |
3066 | the MS Proxy winsock client is installed. */ | |
3067 | { | |
3068 | /* Apparently there is a bug in NT 3.51 with some service | |
3069 | packs, which prevents using DuplicateHandle to make a | |
3070 | socket handle non-inheritable (causes WSACleanup to | |
3071 | hang). The work-around is to use SetHandleInformation | |
3072 | instead if it is available and implemented. */ | |
3073 | if (pfn_SetHandleInformation) | |
480b0c5b | 3074 | { |
962955c5 JR |
3075 | pfn_SetHandleInformation ((HANDLE) s, HANDLE_FLAG_INHERIT, 0); |
3076 | } | |
3077 | else | |
3078 | { | |
3079 | HANDLE parent = GetCurrentProcess (); | |
3080 | HANDLE new_s = INVALID_HANDLE_VALUE; | |
3081 | ||
3082 | if (DuplicateHandle (parent, | |
3083 | (HANDLE) s, | |
3084 | parent, | |
3085 | &new_s, | |
3086 | 0, | |
3087 | FALSE, | |
3088 | DUPLICATE_SAME_ACCESS)) | |
f1614061 | 3089 | { |
962955c5 JR |
3090 | /* It is possible that DuplicateHandle succeeds even |
3091 | though the socket wasn't really a kernel handle, | |
3092 | because a real handle has the same value. So | |
3093 | test whether the new handle really is a socket. */ | |
3094 | long nonblocking = 0; | |
3095 | if (pfn_ioctlsocket ((SOCKET) new_s, FIONBIO, &nonblocking) == 0) | |
ca149beb | 3096 | { |
962955c5 JR |
3097 | pfn_closesocket (s); |
3098 | s = (SOCKET) new_s; | |
3099 | } | |
3100 | else | |
3101 | { | |
3102 | CloseHandle (new_s); | |
3103 | } | |
177c0ea7 | 3104 | } |
480b0c5b | 3105 | } |
962955c5 JR |
3106 | } |
3107 | fd_info[fd].hnd = (HANDLE) s; | |
480b0c5b GV |
3108 | #endif |
3109 | ||
962955c5 JR |
3110 | /* set our own internal flags */ |
3111 | fd_info[fd].flags = FILE_SOCKET | FILE_BINARY | FILE_READ | FILE_WRITE; | |
480b0c5b | 3112 | |
962955c5 JR |
3113 | cp = new_child (); |
3114 | if (cp) | |
3115 | { | |
3116 | cp->fd = fd; | |
3117 | cp->status = STATUS_READ_ACKNOWLEDGED; | |
480b0c5b | 3118 | |
962955c5 JR |
3119 | /* attach child_process to fd_info */ |
3120 | if (fd_info[ fd ].cp != NULL) | |
3121 | { | |
3122 | DebPrint (("sys_socket: fd_info[%d] apparently in use!\n", fd)); | |
3123 | abort (); | |
480b0c5b GV |
3124 | } |
3125 | ||
962955c5 JR |
3126 | fd_info[ fd ].cp = cp; |
3127 | ||
3128 | /* success! */ | |
3129 | winsock_inuse++; /* count open sockets */ | |
3130 | return fd; | |
480b0c5b | 3131 | } |
480b0c5b | 3132 | |
962955c5 JR |
3133 | /* clean up */ |
3134 | _close (fd); | |
3135 | } | |
3136 | pfn_closesocket (s); | |
3137 | h_errno = EMFILE; | |
480b0c5b GV |
3138 | return -1; |
3139 | } | |
3140 | ||
3141 | ||
3142 | int | |
3143 | sys_bind (int s, const struct sockaddr * addr, int namelen) | |
3144 | { | |
f249a012 | 3145 | if (winsock_lib == NULL) |
480b0c5b GV |
3146 | { |
3147 | h_errno = ENOTSOCK; | |
3148 | return SOCKET_ERROR; | |
3149 | } | |
3150 | ||
3151 | check_errno (); | |
3152 | if (fd_info[s].flags & FILE_SOCKET) | |
3153 | { | |
3154 | int rc = pfn_bind (SOCK_HANDLE (s), addr, namelen); | |
3155 | if (rc == SOCKET_ERROR) | |
3156 | set_errno (); | |
3157 | return rc; | |
3158 | } | |
3159 | h_errno = ENOTSOCK; | |
3160 | return SOCKET_ERROR; | |
3161 | } | |
3162 | ||
3163 | ||
3164 | int | |
3165 | sys_connect (int s, const struct sockaddr * name, int namelen) | |
3166 | { | |
f249a012 | 3167 | if (winsock_lib == NULL) |
480b0c5b GV |
3168 | { |
3169 | h_errno = ENOTSOCK; | |
3170 | return SOCKET_ERROR; | |
3171 | } | |
3172 | ||
3173 | check_errno (); | |
3174 | if (fd_info[s].flags & FILE_SOCKET) | |
3175 | { | |
3176 | int rc = pfn_connect (SOCK_HANDLE (s), name, namelen); | |
3177 | if (rc == SOCKET_ERROR) | |
3178 | set_errno (); | |
3179 | return rc; | |
3180 | } | |
3181 | h_errno = ENOTSOCK; | |
3182 | return SOCKET_ERROR; | |
3183 | } | |
3184 | ||
3185 | u_short | |
3186 | sys_htons (u_short hostshort) | |
3187 | { | |
f249a012 | 3188 | return (winsock_lib != NULL) ? |
480b0c5b GV |
3189 | pfn_htons (hostshort) : hostshort; |
3190 | } | |
3191 | ||
3192 | u_short | |
3193 | sys_ntohs (u_short netshort) | |
3194 | { | |
f249a012 | 3195 | return (winsock_lib != NULL) ? |
480b0c5b GV |
3196 | pfn_ntohs (netshort) : netshort; |
3197 | } | |
3198 | ||
3199 | unsigned long | |
3200 | sys_inet_addr (const char * cp) | |
3201 | { | |
f249a012 | 3202 | return (winsock_lib != NULL) ? |
480b0c5b GV |
3203 | pfn_inet_addr (cp) : INADDR_NONE; |
3204 | } | |
3205 | ||
3206 | int | |
3207 | sys_gethostname (char * name, int namelen) | |
3208 | { | |
f249a012 | 3209 | if (winsock_lib != NULL) |
480b0c5b GV |
3210 | return pfn_gethostname (name, namelen); |
3211 | ||
3212 | if (namelen > MAX_COMPUTERNAME_LENGTH) | |
a302c7ae | 3213 | return !GetComputerName (name, (DWORD *)&namelen); |
480b0c5b GV |
3214 | |
3215 | h_errno = EFAULT; | |
3216 | return SOCKET_ERROR; | |
3217 | } | |
3218 | ||
3219 | struct hostent * | |
3220 | sys_gethostbyname(const char * name) | |
3221 | { | |
3222 | struct hostent * host; | |
3223 | ||
f249a012 | 3224 | if (winsock_lib == NULL) |
480b0c5b GV |
3225 | { |
3226 | h_errno = ENETDOWN; | |
3227 | return NULL; | |
3228 | } | |
3229 | ||
3230 | check_errno (); | |
3231 | host = pfn_gethostbyname (name); | |
3232 | if (!host) | |
3233 | set_errno (); | |
3234 | return host; | |
3235 | } | |
3236 | ||
3237 | struct servent * | |
3238 | sys_getservbyname(const char * name, const char * proto) | |
3239 | { | |
3240 | struct servent * serv; | |
3241 | ||
f249a012 | 3242 | if (winsock_lib == NULL) |
480b0c5b GV |
3243 | { |
3244 | h_errno = ENETDOWN; | |
3245 | return NULL; | |
3246 | } | |
3247 | ||
3248 | check_errno (); | |
3249 | serv = pfn_getservbyname (name, proto); | |
3250 | if (!serv) | |
3251 | set_errno (); | |
3252 | return serv; | |
3253 | } | |
3254 | ||
ecd270eb JR |
3255 | int |
3256 | sys_getpeername (int s, struct sockaddr *addr, int * namelen) | |
3257 | { | |
3258 | if (winsock_lib == NULL) | |
3259 | { | |
3260 | h_errno = ENETDOWN; | |
3261 | return SOCKET_ERROR; | |
3262 | } | |
3263 | ||
3264 | check_errno (); | |
3265 | if (fd_info[s].flags & FILE_SOCKET) | |
3266 | { | |
3267 | int rc = pfn_getpeername (SOCK_HANDLE (s), addr, namelen); | |
3268 | if (rc == SOCKET_ERROR) | |
3269 | set_errno (); | |
3270 | return rc; | |
3271 | } | |
3272 | h_errno = ENOTSOCK; | |
3273 | return SOCKET_ERROR; | |
3274 | } | |
3275 | ||
3276 | ||
380961a6 GV |
3277 | int |
3278 | sys_shutdown (int s, int how) | |
3279 | { | |
380961a6 GV |
3280 | if (winsock_lib == NULL) |
3281 | { | |
3282 | h_errno = ENETDOWN; | |
3283 | return SOCKET_ERROR; | |
3284 | } | |
3285 | ||
3286 | check_errno (); | |
3287 | if (fd_info[s].flags & FILE_SOCKET) | |
3288 | { | |
3289 | int rc = pfn_shutdown (SOCK_HANDLE (s), how); | |
962955c5 JR |
3290 | if (rc == SOCKET_ERROR) |
3291 | set_errno (); | |
3292 | return rc; | |
3293 | } | |
3294 | h_errno = ENOTSOCK; | |
3295 | return SOCKET_ERROR; | |
3296 | } | |
3297 | ||
3298 | int | |
a5a389bb | 3299 | sys_setsockopt (int s, int level, int optname, const void * optval, int optlen) |
962955c5 JR |
3300 | { |
3301 | if (winsock_lib == NULL) | |
3302 | { | |
3303 | h_errno = ENETDOWN; | |
3304 | return SOCKET_ERROR; | |
3305 | } | |
3306 | ||
3307 | check_errno (); | |
3308 | if (fd_info[s].flags & FILE_SOCKET) | |
3309 | { | |
3310 | int rc = pfn_setsockopt (SOCK_HANDLE (s), level, optname, | |
a5a389bb | 3311 | (const char *)optval, optlen); |
962955c5 JR |
3312 | if (rc == SOCKET_ERROR) |
3313 | set_errno (); | |
3314 | return rc; | |
3315 | } | |
3316 | h_errno = ENOTSOCK; | |
177c0ea7 | 3317 | return SOCKET_ERROR; |
962955c5 JR |
3318 | } |
3319 | ||
3320 | int | |
3321 | sys_listen (int s, int backlog) | |
3322 | { | |
3323 | if (winsock_lib == NULL) | |
3324 | { | |
3325 | h_errno = ENETDOWN; | |
3326 | return SOCKET_ERROR; | |
3327 | } | |
3328 | ||
3329 | check_errno (); | |
3330 | if (fd_info[s].flags & FILE_SOCKET) | |
3331 | { | |
3332 | int rc = pfn_listen (SOCK_HANDLE (s), backlog); | |
3333 | if (rc == SOCKET_ERROR) | |
3334 | set_errno (); | |
26fb7bc4 | 3335 | else |
64570b36 | 3336 | fd_info[s].flags |= FILE_LISTEN; |
962955c5 JR |
3337 | return rc; |
3338 | } | |
3339 | h_errno = ENOTSOCK; | |
177c0ea7 | 3340 | return SOCKET_ERROR; |
962955c5 JR |
3341 | } |
3342 | ||
3343 | int | |
3344 | sys_getsockname (int s, struct sockaddr * name, int * namelen) | |
3345 | { | |
3346 | if (winsock_lib == NULL) | |
3347 | { | |
3348 | h_errno = ENETDOWN; | |
3349 | return SOCKET_ERROR; | |
3350 | } | |
3351 | ||
3352 | check_errno (); | |
3353 | if (fd_info[s].flags & FILE_SOCKET) | |
3354 | { | |
3355 | int rc = pfn_getsockname (SOCK_HANDLE (s), name, namelen); | |
3356 | if (rc == SOCKET_ERROR) | |
3357 | set_errno (); | |
3358 | return rc; | |
3359 | } | |
3360 | h_errno = ENOTSOCK; | |
177c0ea7 | 3361 | return SOCKET_ERROR; |
962955c5 JR |
3362 | } |
3363 | ||
3364 | int | |
3365 | sys_accept (int s, struct sockaddr * addr, int * addrlen) | |
3366 | { | |
3367 | if (winsock_lib == NULL) | |
3368 | { | |
3369 | h_errno = ENETDOWN; | |
3370 | return -1; | |
3371 | } | |
3372 | ||
3373 | check_errno (); | |
26fb7bc4 | 3374 | if (fd_info[s].flags & FILE_LISTEN) |
962955c5 | 3375 | { |
a0ad1860 | 3376 | SOCKET t = pfn_accept (SOCK_HANDLE (s), addr, addrlen); |
64570b36 KS |
3377 | int fd = -1; |
3378 | if (t == INVALID_SOCKET) | |
3379 | set_errno (); | |
3380 | else | |
3381 | fd = socket_to_fd (t); | |
962955c5 | 3382 | |
64570b36 KS |
3383 | fd_info[s].cp->status = STATUS_READ_ACKNOWLEDGED; |
3384 | ResetEvent (fd_info[s].cp->char_avail); | |
3385 | return fd; | |
962955c5 JR |
3386 | } |
3387 | h_errno = ENOTSOCK; | |
3388 | return -1; | |
3389 | } | |
3390 | ||
3391 | int | |
3392 | sys_recvfrom (int s, char * buf, int len, int flags, | |
3393 | struct sockaddr * from, int * fromlen) | |
3394 | { | |
3395 | if (winsock_lib == NULL) | |
3396 | { | |
3397 | h_errno = ENETDOWN; | |
3398 | return SOCKET_ERROR; | |
3399 | } | |
3400 | ||
3401 | check_errno (); | |
3402 | if (fd_info[s].flags & FILE_SOCKET) | |
3403 | { | |
3404 | int rc = pfn_recvfrom (SOCK_HANDLE (s), buf, len, flags, from, fromlen); | |
3405 | if (rc == SOCKET_ERROR) | |
3406 | set_errno (); | |
3407 | return rc; | |
3408 | } | |
3409 | h_errno = ENOTSOCK; | |
3410 | return SOCKET_ERROR; | |
3411 | } | |
3412 | ||
3413 | int | |
3414 | sys_sendto (int s, const char * buf, int len, int flags, | |
3415 | const struct sockaddr * to, int tolen) | |
3416 | { | |
3417 | if (winsock_lib == NULL) | |
3418 | { | |
3419 | h_errno = ENETDOWN; | |
3420 | return SOCKET_ERROR; | |
3421 | } | |
3422 | ||
3423 | check_errno (); | |
3424 | if (fd_info[s].flags & FILE_SOCKET) | |
3425 | { | |
3426 | int rc = pfn_sendto (SOCK_HANDLE (s), buf, len, flags, to, tolen); | |
380961a6 GV |
3427 | if (rc == SOCKET_ERROR) |
3428 | set_errno (); | |
3429 | return rc; | |
3430 | } | |
3431 | h_errno = ENOTSOCK; | |
3432 | return SOCKET_ERROR; | |
3433 | } | |
3434 | ||
ecd270eb JR |
3435 | /* Windows does not have an fcntl function. Provide an implementation |
3436 | solely for making sockets non-blocking. */ | |
3437 | int | |
3438 | fcntl (int s, int cmd, int options) | |
3439 | { | |
3440 | if (winsock_lib == NULL) | |
3441 | { | |
3442 | h_errno = ENETDOWN; | |
3443 | return -1; | |
3444 | } | |
3445 | ||
3446 | check_errno (); | |
3447 | if (fd_info[s].flags & FILE_SOCKET) | |
3448 | { | |
3449 | if (cmd == F_SETFL && options == O_NDELAY) | |
3450 | { | |
3451 | unsigned long nblock = 1; | |
3452 | int rc = pfn_ioctlsocket (SOCK_HANDLE (s), FIONBIO, &nblock); | |
3453 | if (rc == SOCKET_ERROR) | |
3454 | set_errno(); | |
3455 | /* Keep track of the fact that we set this to non-blocking. */ | |
3456 | fd_info[s].flags |= FILE_NDELAY; | |
3457 | return rc; | |
3458 | } | |
3459 | else | |
3460 | { | |
3461 | h_errno = EINVAL; | |
3462 | return SOCKET_ERROR; | |
3463 | } | |
3464 | } | |
3465 | h_errno = ENOTSOCK; | |
3466 | return SOCKET_ERROR; | |
3467 | } | |
3468 | ||
480b0c5b GV |
3469 | #endif /* HAVE_SOCKETS */ |
3470 | ||
3471 | ||
3472 | /* Shadow main io functions: we need to handle pipes and sockets more | |
3473 | intelligently, and implement non-blocking mode as well. */ | |
3474 | ||
3475 | int | |
3476 | sys_close (int fd) | |
3477 | { | |
3478 | int rc; | |
3479 | ||
7559f399 | 3480 | if (fd < 0) |
480b0c5b GV |
3481 | { |
3482 | errno = EBADF; | |
3483 | return -1; | |
3484 | } | |
3485 | ||
7559f399 | 3486 | if (fd < MAXDESC && fd_info[fd].cp) |
480b0c5b GV |
3487 | { |
3488 | child_process * cp = fd_info[fd].cp; | |
3489 | ||
3490 | fd_info[fd].cp = NULL; | |
3491 | ||
3492 | if (CHILD_ACTIVE (cp)) | |
3493 | { | |
3494 | /* if last descriptor to active child_process then cleanup */ | |
3495 | int i; | |
3496 | for (i = 0; i < MAXDESC; i++) | |
3497 | { | |
3498 | if (i == fd) | |
3499 | continue; | |
3500 | if (fd_info[i].cp == cp) | |
3501 | break; | |
3502 | } | |
3503 | if (i == MAXDESC) | |
3504 | { | |
f249a012 | 3505 | #ifdef HAVE_SOCKETS |
480b0c5b GV |
3506 | if (fd_info[fd].flags & FILE_SOCKET) |
3507 | { | |
f249a012 RS |
3508 | #ifndef SOCK_REPLACE_HANDLE |
3509 | if (winsock_lib == NULL) abort (); | |
480b0c5b GV |
3510 | |
3511 | pfn_shutdown (SOCK_HANDLE (fd), 2); | |
3512 | rc = pfn_closesocket (SOCK_HANDLE (fd)); | |
f249a012 RS |
3513 | #endif |
3514 | winsock_inuse--; /* count open sockets */ | |
480b0c5b GV |
3515 | } |
3516 | #endif | |
3517 | delete_child (cp); | |
3518 | } | |
3519 | } | |
3520 | } | |
3521 | ||
3522 | /* Note that sockets do not need special treatment here (at least on | |
e9e23e23 | 3523 | NT and Windows 95 using the standard tcp/ip stacks) - it appears that |
480b0c5b GV |
3524 | closesocket is equivalent to CloseHandle, which is to be expected |
3525 | because socket handles are fully fledged kernel handles. */ | |
3526 | rc = _close (fd); | |
3527 | ||
7559f399 | 3528 | if (rc == 0 && fd < MAXDESC) |
480b0c5b GV |
3529 | fd_info[fd].flags = 0; |
3530 | ||
3531 | return rc; | |
3532 | } | |
3533 | ||
3534 | int | |
3535 | sys_dup (int fd) | |
3536 | { | |
3537 | int new_fd; | |
3538 | ||
3539 | new_fd = _dup (fd); | |
7559f399 | 3540 | if (new_fd >= 0 && new_fd < MAXDESC) |
480b0c5b GV |
3541 | { |
3542 | /* duplicate our internal info as well */ | |
3543 | fd_info[new_fd] = fd_info[fd]; | |
3544 | } | |
3545 | return new_fd; | |
3546 | } | |
3547 | ||
3548 | ||
3549 | int | |
3550 | sys_dup2 (int src, int dst) | |
3551 | { | |
3552 | int rc; | |
3553 | ||
3554 | if (dst < 0 || dst >= MAXDESC) | |
3555 | { | |
3556 | errno = EBADF; | |
3557 | return -1; | |
3558 | } | |
3559 | ||
3560 | /* make sure we close the destination first if it's a pipe or socket */ | |
3561 | if (src != dst && fd_info[dst].flags != 0) | |
3562 | sys_close (dst); | |
177c0ea7 | 3563 | |
480b0c5b GV |
3564 | rc = _dup2 (src, dst); |
3565 | if (rc == 0) | |
3566 | { | |
3567 | /* duplicate our internal info as well */ | |
3568 | fd_info[dst] = fd_info[src]; | |
3569 | } | |
3570 | return rc; | |
3571 | } | |
3572 | ||
480b0c5b GV |
3573 | /* Unix pipe() has only one arg */ |
3574 | int | |
3575 | sys_pipe (int * phandles) | |
3576 | { | |
3577 | int rc; | |
3578 | unsigned flags; | |
480b0c5b | 3579 | |
76b3903d GV |
3580 | /* make pipe handles non-inheritable; when we spawn a child, we |
3581 | replace the relevant handle with an inheritable one. Also put | |
3582 | pipes into binary mode; we will do text mode translation ourselves | |
3583 | if required. */ | |
3584 | rc = _pipe (phandles, 0, _O_NOINHERIT | _O_BINARY); | |
480b0c5b GV |
3585 | |
3586 | if (rc == 0) | |
3587 | { | |
cb72110d JR |
3588 | /* Protect against overflow, since Windows can open more handles than |
3589 | our fd_info array has room for. */ | |
3590 | if (phandles[0] >= MAXDESC || phandles[1] >= MAXDESC) | |
3591 | { | |
3592 | _close (phandles[0]); | |
3593 | _close (phandles[1]); | |
3594 | rc = -1; | |
3595 | } | |
3596 | else | |
3597 | { | |
3598 | flags = FILE_PIPE | FILE_READ | FILE_BINARY; | |
3599 | fd_info[phandles[0]].flags = flags; | |
480b0c5b | 3600 | |
cb72110d JR |
3601 | flags = FILE_PIPE | FILE_WRITE | FILE_BINARY; |
3602 | fd_info[phandles[1]].flags = flags; | |
3603 | } | |
480b0c5b GV |
3604 | } |
3605 | ||
3606 | return rc; | |
3607 | } | |
3608 | ||
f7554349 | 3609 | /* From ntproc.c */ |
78806724 | 3610 | extern int w32_pipe_read_delay; |
f7554349 | 3611 | |
480b0c5b GV |
3612 | /* Function to do blocking read of one byte, needed to implement |
3613 | select. It is only allowed on sockets and pipes. */ | |
3614 | int | |
3615 | _sys_read_ahead (int fd) | |
3616 | { | |
3617 | child_process * cp; | |
3618 | int rc; | |
3619 | ||
3620 | if (fd < 0 || fd >= MAXDESC) | |
3621 | return STATUS_READ_ERROR; | |
3622 | ||
3623 | cp = fd_info[fd].cp; | |
3624 | ||
3625 | if (cp == NULL || cp->fd != fd || cp->status != STATUS_READ_READY) | |
3626 | return STATUS_READ_ERROR; | |
3627 | ||
3628 | if ((fd_info[fd].flags & (FILE_PIPE | FILE_SOCKET)) == 0 | |
3629 | || (fd_info[fd].flags & FILE_READ) == 0) | |
3630 | { | |
3631 | DebPrint (("_sys_read_ahead: internal error: fd %d is not a pipe or socket!\n", fd)); | |
3632 | abort (); | |
3633 | } | |
177c0ea7 | 3634 | |
480b0c5b | 3635 | cp->status = STATUS_READ_IN_PROGRESS; |
177c0ea7 | 3636 | |
480b0c5b | 3637 | if (fd_info[fd].flags & FILE_PIPE) |
f7554349 | 3638 | { |
f7554349 KH |
3639 | rc = _read (fd, &cp->chr, sizeof (char)); |
3640 | ||
3641 | /* Give subprocess time to buffer some more output for us before | |
e9e23e23 | 3642 | reporting that input is available; we need this because Windows 95 |
f7554349 KH |
3643 | connects DOS programs to pipes by making the pipe appear to be |
3644 | the normal console stdout - as a result most DOS programs will | |
3645 | write to stdout without buffering, ie. one character at a | |
fbd6baed | 3646 | time. Even some W32 programs do this - "dir" in a command |
f7554349 KH |
3647 | shell on NT is very slow if we don't do this. */ |
3648 | if (rc > 0) | |
3649 | { | |
78806724 | 3650 | int wait = w32_pipe_read_delay; |
f7554349 KH |
3651 | |
3652 | if (wait > 0) | |
3653 | Sleep (wait); | |
3654 | else if (wait < 0) | |
3655 | while (++wait <= 0) | |
3656 | /* Yield remainder of our time slice, effectively giving a | |
3657 | temporary priority boost to the child process. */ | |
3658 | Sleep (0); | |
3659 | } | |
3660 | } | |
480b0c5b GV |
3661 | #ifdef HAVE_SOCKETS |
3662 | else if (fd_info[fd].flags & FILE_SOCKET) | |
ecd270eb JR |
3663 | { |
3664 | unsigned long nblock = 0; | |
3665 | /* We always want this to block, so temporarily disable NDELAY. */ | |
3666 | if (fd_info[fd].flags & FILE_NDELAY) | |
3667 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONBIO, &nblock); | |
3668 | ||
3669 | rc = pfn_recv (SOCK_HANDLE (fd), &cp->chr, sizeof (char), 0); | |
3670 | ||
3671 | if (fd_info[fd].flags & FILE_NDELAY) | |
3672 | { | |
3673 | nblock = 1; | |
3674 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONBIO, &nblock); | |
3675 | } | |
3676 | } | |
480b0c5b | 3677 | #endif |
177c0ea7 | 3678 | |
480b0c5b GV |
3679 | if (rc == sizeof (char)) |
3680 | cp->status = STATUS_READ_SUCCEEDED; | |
3681 | else | |
3682 | cp->status = STATUS_READ_FAILED; | |
3683 | ||
3684 | return cp->status; | |
3685 | } | |
3686 | ||
9bfb11f9 KS |
3687 | int |
3688 | _sys_wait_accept (int fd) | |
64570b36 KS |
3689 | { |
3690 | HANDLE hEv; | |
3691 | child_process * cp; | |
3692 | int rc; | |
3693 | ||
3694 | if (fd < 0 || fd >= MAXDESC) | |
3695 | return STATUS_READ_ERROR; | |
3696 | ||
3697 | cp = fd_info[fd].cp; | |
3698 | ||
3699 | if (cp == NULL || cp->fd != fd || cp->status != STATUS_READ_READY) | |
3700 | return STATUS_READ_ERROR; | |
3701 | ||
3702 | cp->status = STATUS_READ_FAILED; | |
3703 | ||
3704 | hEv = pfn_WSACreateEvent (); | |
3705 | rc = pfn_WSAEventSelect (SOCK_HANDLE (fd), hEv, FD_ACCEPT); | |
3706 | if (rc != SOCKET_ERROR) | |
3707 | { | |
3708 | rc = WaitForSingleObject (hEv, INFINITE); | |
3709 | pfn_WSAEventSelect (SOCK_HANDLE (fd), NULL, 0); | |
64570b36 KS |
3710 | if (rc == WAIT_OBJECT_0) |
3711 | cp->status = STATUS_READ_SUCCEEDED; | |
3712 | } | |
7046f191 | 3713 | pfn_WSACloseEvent (hEv); |
64570b36 KS |
3714 | |
3715 | return cp->status; | |
3716 | } | |
3717 | ||
480b0c5b GV |
3718 | int |
3719 | sys_read (int fd, char * buffer, unsigned int count) | |
3720 | { | |
3721 | int nchars; | |
480b0c5b GV |
3722 | int to_read; |
3723 | DWORD waiting; | |
76b3903d | 3724 | char * orig_buffer = buffer; |
480b0c5b | 3725 | |
7559f399 | 3726 | if (fd < 0) |
480b0c5b GV |
3727 | { |
3728 | errno = EBADF; | |
3729 | return -1; | |
3730 | } | |
3731 | ||
7559f399 | 3732 | if (fd < MAXDESC && fd_info[fd].flags & (FILE_PIPE | FILE_SOCKET)) |
480b0c5b GV |
3733 | { |
3734 | child_process *cp = fd_info[fd].cp; | |
3735 | ||
3736 | if ((fd_info[fd].flags & FILE_READ) == 0) | |
3737 | { | |
3738 | errno = EBADF; | |
3739 | return -1; | |
3740 | } | |
3741 | ||
76b3903d GV |
3742 | nchars = 0; |
3743 | ||
3744 | /* re-read CR carried over from last read */ | |
3745 | if (fd_info[fd].flags & FILE_LAST_CR) | |
3746 | { | |
3747 | if (fd_info[fd].flags & FILE_BINARY) abort (); | |
3748 | *buffer++ = 0x0d; | |
3749 | count--; | |
3750 | nchars++; | |
f52eb3ef | 3751 | fd_info[fd].flags &= ~FILE_LAST_CR; |
76b3903d GV |
3752 | } |
3753 | ||
480b0c5b GV |
3754 | /* presence of a child_process structure means we are operating in |
3755 | non-blocking mode - otherwise we just call _read directly. | |
3756 | Note that the child_process structure might be missing because | |
3757 | reap_subprocess has been called; in this case the pipe is | |
3758 | already broken, so calling _read on it is okay. */ | |
3759 | if (cp) | |
3760 | { | |
3761 | int current_status = cp->status; | |
3762 | ||
3763 | switch (current_status) | |
3764 | { | |
3765 | case STATUS_READ_FAILED: | |
3766 | case STATUS_READ_ERROR: | |
f52eb3ef GV |
3767 | /* report normal EOF if nothing in buffer */ |
3768 | if (nchars <= 0) | |
3769 | fd_info[fd].flags |= FILE_AT_EOF; | |
3770 | return nchars; | |
480b0c5b GV |
3771 | |
3772 | case STATUS_READ_READY: | |
3773 | case STATUS_READ_IN_PROGRESS: | |
3774 | DebPrint (("sys_read called when read is in progress\n")); | |
3775 | errno = EWOULDBLOCK; | |
3776 | return -1; | |
3777 | ||
3778 | case STATUS_READ_SUCCEEDED: | |
3779 | /* consume read-ahead char */ | |
3780 | *buffer++ = cp->chr; | |
3781 | count--; | |
76b3903d | 3782 | nchars++; |
480b0c5b GV |
3783 | cp->status = STATUS_READ_ACKNOWLEDGED; |
3784 | ResetEvent (cp->char_avail); | |
3785 | ||
3786 | case STATUS_READ_ACKNOWLEDGED: | |
3787 | break; | |
3788 | ||
3789 | default: | |
3790 | DebPrint (("sys_read: bad status %d\n", current_status)); | |
3791 | errno = EBADF; | |
3792 | return -1; | |
3793 | } | |
3794 | ||
3795 | if (fd_info[fd].flags & FILE_PIPE) | |
3796 | { | |
3797 | PeekNamedPipe ((HANDLE) _get_osfhandle (fd), NULL, 0, NULL, &waiting, NULL); | |
3798 | to_read = min (waiting, (DWORD) count); | |
f52eb3ef GV |
3799 | |
3800 | if (to_read > 0) | |
3801 | nchars += _read (fd, buffer, to_read); | |
480b0c5b GV |
3802 | } |
3803 | #ifdef HAVE_SOCKETS | |
3804 | else /* FILE_SOCKET */ | |
3805 | { | |
f249a012 | 3806 | if (winsock_lib == NULL) abort (); |
480b0c5b GV |
3807 | |
3808 | /* do the equivalent of a non-blocking read */ | |
3809 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONREAD, &waiting); | |
76b3903d | 3810 | if (waiting == 0 && nchars == 0) |
480b0c5b GV |
3811 | { |
3812 | h_errno = errno = EWOULDBLOCK; | |
3813 | return -1; | |
3814 | } | |
3815 | ||
480b0c5b GV |
3816 | if (waiting) |
3817 | { | |
3818 | /* always use binary mode for sockets */ | |
76b3903d GV |
3819 | int res = pfn_recv (SOCK_HANDLE (fd), buffer, count, 0); |
3820 | if (res == SOCKET_ERROR) | |
480b0c5b GV |
3821 | { |
3822 | DebPrint(("sys_read.recv failed with error %d on socket %ld\n", | |
3823 | pfn_WSAGetLastError (), SOCK_HANDLE (fd))); | |
76b3903d GV |
3824 | set_errno (); |
3825 | return -1; | |
480b0c5b | 3826 | } |
76b3903d | 3827 | nchars += res; |
480b0c5b GV |
3828 | } |
3829 | } | |
3830 | #endif | |
3831 | } | |
3832 | else | |
f52eb3ef GV |
3833 | { |
3834 | int nread = _read (fd, buffer, count); | |
3835 | if (nread >= 0) | |
3836 | nchars += nread; | |
3837 | else if (nchars == 0) | |
3838 | nchars = nread; | |
3839 | } | |
76b3903d | 3840 | |
f52eb3ef GV |
3841 | if (nchars <= 0) |
3842 | fd_info[fd].flags |= FILE_AT_EOF; | |
76b3903d | 3843 | /* Perform text mode translation if required. */ |
f52eb3ef | 3844 | else if ((fd_info[fd].flags & FILE_BINARY) == 0) |
76b3903d GV |
3845 | { |
3846 | nchars = crlf_to_lf (nchars, orig_buffer); | |
3847 | /* If buffer contains only CR, return that. To be absolutely | |
3848 | sure we should attempt to read the next char, but in | |
3849 | practice a CR to be followed by LF would not appear by | |
3850 | itself in the buffer. */ | |
3851 | if (nchars > 1 && orig_buffer[nchars - 1] == 0x0d) | |
3852 | { | |
3853 | fd_info[fd].flags |= FILE_LAST_CR; | |
3854 | nchars--; | |
3855 | } | |
76b3903d | 3856 | } |
480b0c5b GV |
3857 | } |
3858 | else | |
3859 | nchars = _read (fd, buffer, count); | |
3860 | ||
76b3903d | 3861 | return nchars; |
480b0c5b GV |
3862 | } |
3863 | ||
3864 | /* For now, don't bother with a non-blocking mode */ | |
3865 | int | |
3866 | sys_write (int fd, const void * buffer, unsigned int count) | |
3867 | { | |
3868 | int nchars; | |
3869 | ||
7559f399 | 3870 | if (fd < 0) |
480b0c5b GV |
3871 | { |
3872 | errno = EBADF; | |
3873 | return -1; | |
3874 | } | |
3875 | ||
7559f399 | 3876 | if (fd < MAXDESC && fd_info[fd].flags & (FILE_PIPE | FILE_SOCKET)) |
76b3903d GV |
3877 | { |
3878 | if ((fd_info[fd].flags & FILE_WRITE) == 0) | |
3879 | { | |
3880 | errno = EBADF; | |
3881 | return -1; | |
3882 | } | |
3883 | ||
3884 | /* Perform text mode translation if required. */ | |
3885 | if ((fd_info[fd].flags & FILE_BINARY) == 0) | |
3886 | { | |
3887 | char * tmpbuf = alloca (count * 2); | |
3888 | unsigned char * src = (void *)buffer; | |
3889 | unsigned char * dst = tmpbuf; | |
3890 | int nbytes = count; | |
3891 | ||
3892 | while (1) | |
3893 | { | |
3894 | unsigned char *next; | |
3895 | /* copy next line or remaining bytes */ | |
3896 | next = _memccpy (dst, src, '\n', nbytes); | |
3897 | if (next) | |
3898 | { | |
3899 | /* copied one line ending with '\n' */ | |
3900 | int copied = next - dst; | |
3901 | nbytes -= copied; | |
3902 | src += copied; | |
3903 | /* insert '\r' before '\n' */ | |
3904 | next[-1] = '\r'; | |
3905 | next[0] = '\n'; | |
3906 | dst = next + 1; | |
3907 | count++; | |
177c0ea7 | 3908 | } |
76b3903d GV |
3909 | else |
3910 | /* copied remaining partial line -> now finished */ | |
3911 | break; | |
3912 | } | |
3913 | buffer = tmpbuf; | |
3914 | } | |
3915 | } | |
3916 | ||
480b0c5b | 3917 | #ifdef HAVE_SOCKETS |
7559f399 | 3918 | if (fd < MAXDESC && fd_info[fd].flags & FILE_SOCKET) |
480b0c5b | 3919 | { |
30a32e0e | 3920 | unsigned long nblock = 0; |
f249a012 | 3921 | if (winsock_lib == NULL) abort (); |
30a32e0e JR |
3922 | |
3923 | /* TODO: implement select() properly so non-blocking I/O works. */ | |
3924 | /* For now, make sure the write blocks. */ | |
3925 | if (fd_info[fd].flags & FILE_NDELAY) | |
3926 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONBIO, &nblock); | |
3927 | ||
480b0c5b | 3928 | nchars = pfn_send (SOCK_HANDLE (fd), buffer, count, 0); |
30a32e0e JR |
3929 | |
3930 | /* Set the socket back to non-blocking if it was before, | |
3931 | for other operations that support it. */ | |
3932 | if (fd_info[fd].flags & FILE_NDELAY) | |
3933 | { | |
3934 | nblock = 1; | |
3935 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONBIO, &nblock); | |
3936 | } | |
3937 | ||
480b0c5b GV |
3938 | if (nchars == SOCKET_ERROR) |
3939 | { | |
670773af | 3940 | DebPrint(("sys_write.send failed with error %d on socket %ld\n", |
480b0c5b GV |
3941 | pfn_WSAGetLastError (), SOCK_HANDLE (fd))); |
3942 | set_errno (); | |
3943 | } | |
3944 | } | |
3945 | else | |
3946 | #endif | |
3947 | nchars = _write (fd, buffer, count); | |
3948 | ||
3949 | return nchars; | |
3950 | } | |
3951 | ||
f52eb3ef GV |
3952 | static void |
3953 | check_windows_init_file () | |
3954 | { | |
3955 | extern int noninteractive, inhibit_window_system; | |
3956 | ||
3957 | /* A common indication that Emacs is not installed properly is when | |
3958 | it cannot find the Windows installation file. If this file does | |
3959 | not exist in the expected place, tell the user. */ | |
3960 | ||
177c0ea7 | 3961 | if (!noninteractive && !inhibit_window_system) |
d54abccd GV |
3962 | { |
3963 | extern Lisp_Object Vwindow_system, Vload_path, Qfile_exists_p; | |
a0b9c838 | 3964 | Lisp_Object objs[2]; |
96ef7d42 | 3965 | Lisp_Object full_load_path; |
d54abccd GV |
3966 | Lisp_Object init_file; |
3967 | int fd; | |
f52eb3ef | 3968 | |
a0b9c838 GV |
3969 | objs[0] = Vload_path; |
3970 | objs[1] = decode_env_path (0, (getenv ("EMACSLOADPATH"))); | |
3971 | full_load_path = Fappend (2, objs); | |
d54abccd | 3972 | init_file = build_string ("term/w32-win"); |
c50a2aa6 | 3973 | fd = openp (full_load_path, init_file, Fget_load_suffixes (), NULL, Qnil); |
177c0ea7 | 3974 | if (fd < 0) |
d54abccd | 3975 | { |
96ef7d42 | 3976 | Lisp_Object load_path_print = Fprin1_to_string (full_load_path, Qnil); |
d5db4077 KR |
3977 | char *init_file_name = SDATA (init_file); |
3978 | char *load_path = SDATA (load_path_print); | |
acc23b87 KS |
3979 | char *buffer = alloca (1024 |
3980 | + strlen (init_file_name) | |
3981 | + strlen (load_path)); | |
d54abccd | 3982 | |
177c0ea7 | 3983 | sprintf (buffer, |
d54abccd GV |
3984 | "The Emacs Windows initialization file \"%s.el\" " |
3985 | "could not be found in your Emacs installation. " | |
3986 | "Emacs checked the following directories for this file:\n" | |
3987 | "\n%s\n\n" | |
3988 | "When Emacs cannot find this file, it usually means that it " | |
3989 | "was not installed properly, or its distribution file was " | |
3990 | "not unpacked properly.\nSee the README.W32 file in the " | |
3991 | "top-level Emacs directory for more information.", | |
3992 | init_file_name, load_path); | |
3993 | MessageBox (NULL, | |
3994 | buffer, | |
3995 | "Emacs Abort Dialog", | |
3996 | MB_OK | MB_ICONEXCLAMATION | MB_TASKMODAL); | |
f52eb3ef GV |
3997 | /* Use the low-level Emacs abort. */ |
3998 | #undef abort | |
d54abccd GV |
3999 | abort (); |
4000 | } | |
4001 | else | |
4002 | { | |
a302c7ae | 4003 | _close (fd); |
d54abccd | 4004 | } |
f52eb3ef | 4005 | } |
f52eb3ef | 4006 | } |
480b0c5b GV |
4007 | |
4008 | void | |
4009 | term_ntproc () | |
4010 | { | |
4011 | #ifdef HAVE_SOCKETS | |
4012 | /* shutdown the socket interface if necessary */ | |
4013 | term_winsock (); | |
4014 | #endif | |
52c7f9ee JR |
4015 | |
4016 | term_w32select (); | |
480b0c5b GV |
4017 | } |
4018 | ||
4019 | void | |
4020 | init_ntproc () | |
4021 | { | |
4022 | #ifdef HAVE_SOCKETS | |
f249a012 RS |
4023 | /* Initialise the socket interface now if available and requested by |
4024 | the user by defining PRELOAD_WINSOCK; otherwise loading will be | |
fbd6baed | 4025 | delayed until open-network-stream is called (w32-has-winsock can |
f249a012 RS |
4026 | also be used to dynamically load or reload winsock). |
4027 | ||
4028 | Conveniently, init_environment is called before us, so | |
4029 | PRELOAD_WINSOCK can be set in the registry. */ | |
4030 | ||
4031 | /* Always initialize this correctly. */ | |
4032 | winsock_lib = NULL; | |
4033 | ||
4034 | if (getenv ("PRELOAD_WINSOCK") != NULL) | |
4035 | init_winsock (TRUE); | |
480b0c5b GV |
4036 | #endif |
4037 | ||
4038 | /* Initial preparation for subprocess support: replace our standard | |
4039 | handles with non-inheritable versions. */ | |
4040 | { | |
4041 | HANDLE parent; | |
4042 | HANDLE stdin_save = INVALID_HANDLE_VALUE; | |
4043 | HANDLE stdout_save = INVALID_HANDLE_VALUE; | |
4044 | HANDLE stderr_save = INVALID_HANDLE_VALUE; | |
4045 | ||
4046 | parent = GetCurrentProcess (); | |
4047 | ||
4048 | /* ignore errors when duplicating and closing; typically the | |
4049 | handles will be invalid when running as a gui program. */ | |
177c0ea7 JB |
4050 | DuplicateHandle (parent, |
4051 | GetStdHandle (STD_INPUT_HANDLE), | |
480b0c5b | 4052 | parent, |
177c0ea7 JB |
4053 | &stdin_save, |
4054 | 0, | |
4055 | FALSE, | |
480b0c5b | 4056 | DUPLICATE_SAME_ACCESS); |
177c0ea7 | 4057 | |
480b0c5b GV |
4058 | DuplicateHandle (parent, |
4059 | GetStdHandle (STD_OUTPUT_HANDLE), | |
4060 | parent, | |
4061 | &stdout_save, | |
4062 | 0, | |
4063 | FALSE, | |
4064 | DUPLICATE_SAME_ACCESS); | |
177c0ea7 | 4065 | |
480b0c5b GV |
4066 | DuplicateHandle (parent, |
4067 | GetStdHandle (STD_ERROR_HANDLE), | |
4068 | parent, | |
4069 | &stderr_save, | |
4070 | 0, | |
4071 | FALSE, | |
4072 | DUPLICATE_SAME_ACCESS); | |
177c0ea7 | 4073 | |
480b0c5b GV |
4074 | fclose (stdin); |
4075 | fclose (stdout); | |
4076 | fclose (stderr); | |
4077 | ||
4078 | if (stdin_save != INVALID_HANDLE_VALUE) | |
4079 | _open_osfhandle ((long) stdin_save, O_TEXT); | |
4080 | else | |
76b3903d GV |
4081 | _open ("nul", O_TEXT | O_NOINHERIT | O_RDONLY); |
4082 | _fdopen (0, "r"); | |
480b0c5b GV |
4083 | |
4084 | if (stdout_save != INVALID_HANDLE_VALUE) | |
4085 | _open_osfhandle ((long) stdout_save, O_TEXT); | |
4086 | else | |
76b3903d GV |
4087 | _open ("nul", O_TEXT | O_NOINHERIT | O_WRONLY); |
4088 | _fdopen (1, "w"); | |
480b0c5b GV |
4089 | |
4090 | if (stderr_save != INVALID_HANDLE_VALUE) | |
4091 | _open_osfhandle ((long) stderr_save, O_TEXT); | |
4092 | else | |
76b3903d GV |
4093 | _open ("nul", O_TEXT | O_NOINHERIT | O_WRONLY); |
4094 | _fdopen (2, "w"); | |
480b0c5b GV |
4095 | } |
4096 | ||
4097 | /* unfortunately, atexit depends on implementation of malloc */ | |
4098 | /* atexit (term_ntproc); */ | |
4099 | signal (SIGABRT, term_ntproc); | |
76b3903d GV |
4100 | |
4101 | /* determine which drives are fixed, for GetCachedVolumeInformation */ | |
4102 | { | |
4103 | /* GetDriveType must have trailing backslash. */ | |
4104 | char drive[] = "A:\\"; | |
4105 | ||
4106 | /* Loop over all possible drive letters */ | |
4107 | while (*drive <= 'Z') | |
4108 | { | |
4109 | /* Record if this drive letter refers to a fixed drive. */ | |
177c0ea7 | 4110 | fixed_drives[DRIVE_INDEX (*drive)] = |
76b3903d GV |
4111 | (GetDriveType (drive) == DRIVE_FIXED); |
4112 | ||
4113 | (*drive)++; | |
4114 | } | |
a302c7ae AI |
4115 | |
4116 | /* Reset the volume info cache. */ | |
4117 | volume_cache = NULL; | |
76b3903d | 4118 | } |
177c0ea7 | 4119 | |
d54abccd GV |
4120 | /* Check to see if Emacs has been installed correctly. */ |
4121 | check_windows_init_file (); | |
480b0c5b GV |
4122 | } |
4123 | ||
a8c3a596 JR |
4124 | /* |
4125 | shutdown_handler ensures that buffers' autosave files are | |
4126 | up to date when the user logs off, or the system shuts down. | |
4127 | */ | |
4128 | BOOL WINAPI shutdown_handler(DWORD type) | |
4129 | { | |
4130 | /* Ctrl-C and Ctrl-Break are already suppressed, so don't handle them. */ | |
4131 | if (type == CTRL_CLOSE_EVENT /* User closes console window. */ | |
4132 | || type == CTRL_LOGOFF_EVENT /* User logs off. */ | |
4133 | || type == CTRL_SHUTDOWN_EVENT) /* User shutsdown. */ | |
4134 | { | |
4135 | /* Shut down cleanly, making sure autosave files are up to date. */ | |
4136 | shut_down_emacs (0, 0, Qnil); | |
4137 | } | |
4138 | ||
7046f191 | 4139 | /* Allow other handlers to handle this signal. */ |
a8c3a596 JR |
4140 | return FALSE; |
4141 | } | |
4142 | ||
9785d95b BK |
4143 | /* |
4144 | globals_of_w32 is used to initialize those global variables that | |
4145 | must always be initialized on startup even when the global variable | |
4146 | initialized is non zero (see the function main in emacs.c). | |
4147 | */ | |
9bfb11f9 KS |
4148 | void |
4149 | globals_of_w32 () | |
9785d95b BK |
4150 | { |
4151 | g_b_init_is_windows_9x = 0; | |
4152 | g_b_init_open_process_token = 0; | |
4153 | g_b_init_get_token_information = 0; | |
4154 | g_b_init_lookup_account_sid = 0; | |
4155 | g_b_init_get_sid_identifier_authority = 0; | |
a8c3a596 JR |
4156 | /* The following sets a handler for shutdown notifications for |
4157 | console apps. This actually applies to Emacs in both console and | |
4158 | GUI modes, since we had to fool windows into thinking emacs is a | |
4159 | console application to get console mode to work. */ | |
4160 | SetConsoleCtrlHandler(shutdown_handler, TRUE); | |
9785d95b BK |
4161 | } |
4162 | ||
480b0c5b | 4163 | /* end of nt.c */ |
ab5796a9 MB |
4164 | |
4165 | /* arch-tag: 90442dd3-37be-482b-b272-ac752e3049f1 | |
4166 | (do not change this comment) */ |