Commit | Line | Data |
---|---|---|
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, |
8cabe764 | 3 | 2005, 2006, 2007, 2008 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 | |
684d6f5b | 9 | the Free Software Foundation; either version 3, or (at your option) |
3b7ad313 EN |
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 | 115 | /* |
aa5ee2a3 | 116 | Initialization states |
9785d95b BK |
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); | |
74258518 JR |
140 | typedef BOOL (WINAPI * GetProcessTimes_Proc) ( |
141 | HANDLE process_handle, | |
142 | LPFILETIME creation_time, | |
143 | LPFILETIME exit_time, | |
144 | LPFILETIME kernel_time, | |
145 | LPFILETIME user_time); | |
146 | ||
147 | GetProcessTimes_Proc get_process_times_fn = NULL; | |
148 | ||
f60ae425 BK |
149 | #ifdef _UNICODE |
150 | const char * const LookupAccountSid_Name = "LookupAccountSidW"; | |
151 | #else | |
152 | const char * const LookupAccountSid_Name = "LookupAccountSidA"; | |
153 | #endif | |
154 | typedef BOOL (WINAPI * LookupAccountSid_Proc) ( | |
155 | LPCTSTR lpSystemName, | |
156 | PSID Sid, | |
157 | LPTSTR Name, | |
158 | LPDWORD cbName, | |
159 | LPTSTR DomainName, | |
160 | LPDWORD cbDomainName, | |
161 | PSID_NAME_USE peUse); | |
162 | typedef PSID_IDENTIFIER_AUTHORITY (WINAPI * GetSidIdentifierAuthority_Proc) ( | |
163 | PSID pSid); | |
164 | ||
165 | /* ** A utility function ** */ | |
9bfb11f9 KS |
166 | static BOOL |
167 | is_windows_9x () | |
f60ae425 | 168 | { |
9785d95b | 169 | static BOOL s_b_ret=0; |
f60ae425 | 170 | OSVERSIONINFO os_ver; |
9785d95b | 171 | if (g_b_init_is_windows_9x == 0) |
f60ae425 | 172 | { |
9785d95b BK |
173 | g_b_init_is_windows_9x = 1; |
174 | ZeroMemory(&os_ver, sizeof(OSVERSIONINFO)); | |
175 | os_ver.dwOSVersionInfoSize = sizeof(OSVERSIONINFO); | |
176 | if (GetVersionEx (&os_ver)) | |
177 | { | |
178 | s_b_ret = (os_ver.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS); | |
179 | } | |
f60ae425 | 180 | } |
9785d95b | 181 | return s_b_ret; |
f60ae425 BK |
182 | } |
183 | ||
74258518 JR |
184 | /* Get total user and system times for get-internal-run-time. |
185 | Returns a list of three integers if the times are provided by the OS | |
186 | (NT derivatives), otherwise it returns the result of current-time. */ | |
187 | Lisp_Object | |
188 | w32_get_internal_run_time () | |
189 | { | |
190 | if (get_process_times_fn) | |
191 | { | |
192 | FILETIME create, exit, kernel, user; | |
193 | HANDLE proc = GetCurrentProcess(); | |
194 | if ((*get_process_times_fn) (proc, &create, &exit, &kernel, &user)) | |
195 | { | |
196 | LARGE_INTEGER user_int, kernel_int, total; | |
197 | int microseconds; | |
198 | user_int.LowPart = user.dwLowDateTime; | |
199 | user_int.HighPart = user.dwHighDateTime; | |
200 | kernel_int.LowPart = kernel.dwLowDateTime; | |
201 | kernel_int.HighPart = kernel.dwHighDateTime; | |
202 | total.QuadPart = user_int.QuadPart + kernel_int.QuadPart; | |
203 | /* FILETIME is 100 nanosecond increments, Emacs only wants | |
204 | microsecond resolution. */ | |
205 | total.QuadPart /= 10; | |
206 | microseconds = total.QuadPart % 1000000; | |
207 | total.QuadPart /= 1000000; | |
208 | ||
209 | /* Sanity check to make sure we can represent the result. */ | |
210 | if (total.HighPart == 0) | |
211 | { | |
212 | int secs = total.LowPart; | |
213 | ||
214 | return list3 (make_number ((secs >> 16) & 0xffff), | |
215 | make_number (secs & 0xffff), | |
216 | make_number (microseconds)); | |
217 | } | |
218 | } | |
219 | } | |
220 | ||
221 | return Fcurrent_time (); | |
222 | } | |
223 | ||
f60ae425 BK |
224 | /* ** The wrapper functions ** */ |
225 | ||
226 | BOOL WINAPI open_process_token ( | |
227 | HANDLE ProcessHandle, | |
228 | DWORD DesiredAccess, | |
229 | PHANDLE TokenHandle) | |
230 | { | |
9785d95b | 231 | static OpenProcessToken_Proc s_pfn_Open_Process_Token = NULL; |
f60ae425 BK |
232 | HMODULE hm_advapi32 = NULL; |
233 | if (is_windows_9x () == TRUE) | |
234 | { | |
235 | return FALSE; | |
236 | } | |
9785d95b BK |
237 | if (g_b_init_open_process_token == 0) |
238 | { | |
239 | g_b_init_open_process_token = 1; | |
240 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
241 | s_pfn_Open_Process_Token = | |
242 | (OpenProcessToken_Proc) GetProcAddress (hm_advapi32, "OpenProcessToken"); | |
243 | } | |
244 | if (s_pfn_Open_Process_Token == NULL) | |
f60ae425 BK |
245 | { |
246 | return FALSE; | |
247 | } | |
248 | return ( | |
9785d95b | 249 | s_pfn_Open_Process_Token ( |
f60ae425 BK |
250 | ProcessHandle, |
251 | DesiredAccess, | |
252 | TokenHandle) | |
253 | ); | |
254 | } | |
255 | ||
256 | BOOL WINAPI get_token_information ( | |
257 | HANDLE TokenHandle, | |
258 | TOKEN_INFORMATION_CLASS TokenInformationClass, | |
259 | LPVOID TokenInformation, | |
260 | DWORD TokenInformationLength, | |
261 | PDWORD ReturnLength) | |
262 | { | |
9785d95b | 263 | static GetTokenInformation_Proc s_pfn_Get_Token_Information = NULL; |
f60ae425 BK |
264 | HMODULE hm_advapi32 = NULL; |
265 | if (is_windows_9x () == TRUE) | |
266 | { | |
267 | return FALSE; | |
268 | } | |
9785d95b BK |
269 | if (g_b_init_get_token_information == 0) |
270 | { | |
271 | g_b_init_get_token_information = 1; | |
272 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
273 | s_pfn_Get_Token_Information = | |
274 | (GetTokenInformation_Proc) GetProcAddress (hm_advapi32, "GetTokenInformation"); | |
275 | } | |
276 | if (s_pfn_Get_Token_Information == NULL) | |
f60ae425 BK |
277 | { |
278 | return FALSE; | |
279 | } | |
280 | return ( | |
9785d95b | 281 | s_pfn_Get_Token_Information ( |
f60ae425 BK |
282 | TokenHandle, |
283 | TokenInformationClass, | |
284 | TokenInformation, | |
285 | TokenInformationLength, | |
286 | ReturnLength) | |
287 | ); | |
288 | } | |
289 | ||
290 | BOOL WINAPI lookup_account_sid ( | |
291 | LPCTSTR lpSystemName, | |
292 | PSID Sid, | |
293 | LPTSTR Name, | |
294 | LPDWORD cbName, | |
295 | LPTSTR DomainName, | |
296 | LPDWORD cbDomainName, | |
297 | PSID_NAME_USE peUse) | |
298 | { | |
9785d95b | 299 | static LookupAccountSid_Proc s_pfn_Lookup_Account_Sid = NULL; |
f60ae425 BK |
300 | HMODULE hm_advapi32 = NULL; |
301 | if (is_windows_9x () == TRUE) | |
302 | { | |
303 | return FALSE; | |
304 | } | |
9785d95b BK |
305 | if (g_b_init_lookup_account_sid == 0) |
306 | { | |
307 | g_b_init_lookup_account_sid = 1; | |
308 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
309 | s_pfn_Lookup_Account_Sid = | |
310 | (LookupAccountSid_Proc) GetProcAddress (hm_advapi32, LookupAccountSid_Name); | |
311 | } | |
312 | if (s_pfn_Lookup_Account_Sid == NULL) | |
f60ae425 BK |
313 | { |
314 | return FALSE; | |
315 | } | |
316 | return ( | |
9785d95b | 317 | s_pfn_Lookup_Account_Sid ( |
f60ae425 BK |
318 | lpSystemName, |
319 | Sid, | |
320 | Name, | |
321 | cbName, | |
322 | DomainName, | |
323 | cbDomainName, | |
324 | peUse) | |
325 | ); | |
326 | } | |
327 | ||
328 | PSID_IDENTIFIER_AUTHORITY WINAPI get_sid_identifier_authority ( | |
329 | PSID pSid) | |
330 | { | |
9785d95b | 331 | static GetSidIdentifierAuthority_Proc s_pfn_Get_Sid_Identifier_Authority = NULL; |
f60ae425 BK |
332 | HMODULE hm_advapi32 = NULL; |
333 | if (is_windows_9x () == TRUE) | |
334 | { | |
335 | return NULL; | |
336 | } | |
9785d95b BK |
337 | if (g_b_init_get_sid_identifier_authority == 0) |
338 | { | |
339 | g_b_init_get_sid_identifier_authority = 1; | |
340 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
341 | s_pfn_Get_Sid_Identifier_Authority = | |
342 | (GetSidIdentifierAuthority_Proc) GetProcAddress ( | |
343 | hm_advapi32, "GetSidIdentifierAuthority"); | |
344 | } | |
345 | if (s_pfn_Get_Sid_Identifier_Authority == NULL) | |
f60ae425 BK |
346 | { |
347 | return NULL; | |
348 | } | |
9785d95b | 349 | return (s_pfn_Get_Sid_Identifier_Authority (pSid)); |
f60ae425 BK |
350 | } |
351 | ||
352 | /* | |
353 | END: Wrapper functions around OpenProcessToken | |
354 | and other functions in advapi32.dll that are only | |
355 | supported in Windows NT / 2k / XP | |
356 | */ | |
357 | ||
358 | \f | |
18e070ac AI |
359 | /* Equivalent of strerror for W32 error codes. */ |
360 | char * | |
361 | w32_strerror (int error_no) | |
362 | { | |
363 | static char buf[500]; | |
364 | ||
365 | if (error_no == 0) | |
366 | error_no = GetLastError (); | |
367 | ||
368 | buf[0] = '\0'; | |
369 | if (!FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM, NULL, | |
370 | error_no, | |
371 | 0, /* choose most suitable language */ | |
372 | buf, sizeof (buf), NULL)) | |
373 | sprintf (buf, "w32 error %u", error_no); | |
374 | return buf; | |
375 | } | |
376 | ||
ed91b2ad EZ |
377 | /* Return 1 if P is a valid pointer to an object of size SIZE. Return |
378 | 0 if P is NOT a valid pointer. Return -1 if we cannot validate P. | |
379 | ||
380 | This is called from alloc.c:valid_pointer_p. */ | |
381 | int | |
382 | w32_valid_pointer_p (void *p, int size) | |
383 | { | |
384 | SIZE_T done; | |
385 | HANDLE h = OpenProcess (PROCESS_VM_READ, FALSE, GetCurrentProcessId ()); | |
386 | ||
387 | if (h) | |
388 | { | |
389 | unsigned char *buf = alloca (size); | |
390 | int retval = ReadProcessMemory (h, p, buf, size, &done); | |
391 | ||
392 | CloseHandle (h); | |
393 | return retval; | |
394 | } | |
395 | else | |
396 | return -1; | |
397 | } | |
398 | ||
76b3903d | 399 | static char startup_dir[MAXPATHLEN]; |
00b3b7b3 | 400 | |
95ed0025 | 401 | /* Get the current working directory. */ |
480b0c5b | 402 | char * |
95ed0025 RS |
403 | getwd (char *dir) |
404 | { | |
76b3903d | 405 | #if 0 |
480b0c5b GV |
406 | if (GetCurrentDirectory (MAXPATHLEN, dir) > 0) |
407 | return dir; | |
408 | return NULL; | |
76b3903d GV |
409 | #else |
410 | /* Emacs doesn't actually change directory itself, and we want to | |
411 | force our real wd to be where emacs.exe is to avoid unnecessary | |
412 | conflicts when trying to rename or delete directories. */ | |
413 | strcpy (dir, startup_dir); | |
414 | return dir; | |
415 | #endif | |
95ed0025 RS |
416 | } |
417 | ||
480b0c5b | 418 | #ifndef HAVE_SOCKETS |
95ed0025 RS |
419 | /* Emulate gethostname. */ |
420 | int | |
421 | gethostname (char *buffer, int size) | |
422 | { | |
177c0ea7 | 423 | /* NT only allows small host names, so the buffer is |
95ed0025 RS |
424 | certainly large enough. */ |
425 | return !GetComputerName (buffer, &size); | |
426 | } | |
480b0c5b | 427 | #endif /* HAVE_SOCKETS */ |
95ed0025 RS |
428 | |
429 | /* Emulate getloadavg. */ | |
430 | int | |
431 | getloadavg (double loadavg[], int nelem) | |
432 | { | |
433 | int i; | |
434 | ||
435 | /* A faithful emulation is going to have to be saved for a rainy day. */ | |
177c0ea7 | 436 | for (i = 0; i < nelem; i++) |
95ed0025 RS |
437 | { |
438 | loadavg[i] = 0.0; | |
439 | } | |
440 | return i; | |
441 | } | |
442 | ||
480b0c5b | 443 | /* Emulate getpwuid, getpwnam and others. */ |
95ed0025 | 444 | |
051fe60d GV |
445 | #define PASSWD_FIELD_SIZE 256 |
446 | ||
447 | static char the_passwd_name[PASSWD_FIELD_SIZE]; | |
448 | static char the_passwd_passwd[PASSWD_FIELD_SIZE]; | |
449 | static char the_passwd_gecos[PASSWD_FIELD_SIZE]; | |
450 | static char the_passwd_dir[PASSWD_FIELD_SIZE]; | |
451 | static char the_passwd_shell[PASSWD_FIELD_SIZE]; | |
95ed0025 | 452 | |
177c0ea7 | 453 | static struct passwd the_passwd = |
95ed0025 RS |
454 | { |
455 | the_passwd_name, | |
456 | the_passwd_passwd, | |
457 | 0, | |
458 | 0, | |
459 | 0, | |
460 | the_passwd_gecos, | |
461 | the_passwd_dir, | |
462 | the_passwd_shell, | |
463 | }; | |
464 | ||
3d19b645 LH |
465 | static struct group the_group = |
466 | { | |
467 | /* There are no groups on NT, so we just return "root" as the | |
468 | group name. */ | |
469 | "root", | |
470 | }; | |
471 | ||
177c0ea7 JB |
472 | int |
473 | getuid () | |
474 | { | |
480b0c5b GV |
475 | return the_passwd.pw_uid; |
476 | } | |
477 | ||
177c0ea7 JB |
478 | int |
479 | geteuid () | |
480 | { | |
480b0c5b GV |
481 | /* I could imagine arguing for checking to see whether the user is |
482 | in the Administrators group and returning a UID of 0 for that | |
483 | case, but I don't know how wise that would be in the long run. */ | |
177c0ea7 | 484 | return getuid (); |
480b0c5b GV |
485 | } |
486 | ||
177c0ea7 JB |
487 | int |
488 | getgid () | |
489 | { | |
480b0c5b GV |
490 | return the_passwd.pw_gid; |
491 | } | |
492 | ||
177c0ea7 JB |
493 | int |
494 | getegid () | |
495 | { | |
480b0c5b GV |
496 | return getgid (); |
497 | } | |
498 | ||
95ed0025 RS |
499 | struct passwd * |
500 | getpwuid (int uid) | |
501 | { | |
480b0c5b GV |
502 | if (uid == the_passwd.pw_uid) |
503 | return &the_passwd; | |
504 | return NULL; | |
95ed0025 RS |
505 | } |
506 | ||
3d19b645 LH |
507 | struct group * |
508 | getgrgid (gid_t gid) | |
509 | { | |
510 | return &the_group; | |
511 | } | |
512 | ||
95ed0025 RS |
513 | struct passwd * |
514 | getpwnam (char *name) | |
515 | { | |
516 | struct passwd *pw; | |
177c0ea7 | 517 | |
95ed0025 RS |
518 | pw = getpwuid (getuid ()); |
519 | if (!pw) | |
520 | return pw; | |
521 | ||
480b0c5b | 522 | if (stricmp (name, pw->pw_name)) |
95ed0025 RS |
523 | return NULL; |
524 | ||
525 | return pw; | |
526 | } | |
527 | ||
480b0c5b GV |
528 | void |
529 | init_user_info () | |
95ed0025 | 530 | { |
480b0c5b GV |
531 | /* Find the user's real name by opening the process token and |
532 | looking up the name associated with the user-sid in that token. | |
533 | ||
534 | Use the relative portion of the identifier authority value from | |
535 | the user-sid as the user id value (same for group id using the | |
536 | primary group sid from the process token). */ | |
537 | ||
10aabbf9 JB |
538 | char user_sid[256], name[256], domain[256]; |
539 | DWORD length = sizeof (name), dlength = sizeof (domain), trash; | |
540 | HANDLE token = NULL; | |
541 | SID_NAME_USE user_type; | |
542 | ||
543 | if (open_process_token (GetCurrentProcess (), TOKEN_QUERY, &token) | |
544 | && get_token_information (token, TokenUser, | |
545 | (PVOID) user_sid, sizeof (user_sid), &trash) | |
546 | && lookup_account_sid (NULL, *((PSID *) user_sid), name, &length, | |
547 | domain, &dlength, &user_type)) | |
d1c1c3d2 | 548 | { |
480b0c5b GV |
549 | strcpy (the_passwd.pw_name, name); |
550 | /* Determine a reasonable uid value. */ | |
551 | if (stricmp ("administrator", name) == 0) | |
552 | { | |
553 | the_passwd.pw_uid = 0; | |
554 | the_passwd.pw_gid = 0; | |
555 | } | |
556 | else | |
557 | { | |
558 | SID_IDENTIFIER_AUTHORITY * pSIA; | |
559 | ||
f60ae425 | 560 | pSIA = get_sid_identifier_authority (*((PSID *) user_sid)); |
480b0c5b GV |
561 | /* I believe the relative portion is the last 4 bytes (of 6) |
562 | with msb first. */ | |
563 | the_passwd.pw_uid = ((pSIA->Value[2] << 24) + | |
564 | (pSIA->Value[3] << 16) + | |
565 | (pSIA->Value[4] << 8) + | |
566 | (pSIA->Value[5] << 0)); | |
567 | /* restrict to conventional uid range for normal users */ | |
568 | the_passwd.pw_uid = the_passwd.pw_uid % 60001; | |
569 | ||
570 | /* Get group id */ | |
f60ae425 | 571 | if (get_token_information (token, TokenPrimaryGroup, |
10aabbf9 | 572 | (PVOID) user_sid, sizeof (user_sid), &trash)) |
480b0c5b GV |
573 | { |
574 | SID_IDENTIFIER_AUTHORITY * pSIA; | |
575 | ||
f60ae425 | 576 | pSIA = get_sid_identifier_authority (*((PSID *) user_sid)); |
480b0c5b GV |
577 | the_passwd.pw_gid = ((pSIA->Value[2] << 24) + |
578 | (pSIA->Value[3] << 16) + | |
579 | (pSIA->Value[4] << 8) + | |
580 | (pSIA->Value[5] << 0)); | |
581 | /* I don't know if this is necessary, but for safety... */ | |
582 | the_passwd.pw_gid = the_passwd.pw_gid % 60001; | |
583 | } | |
584 | else | |
585 | the_passwd.pw_gid = the_passwd.pw_uid; | |
586 | } | |
587 | } | |
588 | /* If security calls are not supported (presumably because we | |
10aabbf9 | 589 | are running under Windows 95), fallback to this. */ |
480b0c5b GV |
590 | else if (GetUserName (name, &length)) |
591 | { | |
592 | strcpy (the_passwd.pw_name, name); | |
593 | if (stricmp ("administrator", name) == 0) | |
594 | the_passwd.pw_uid = 0; | |
595 | else | |
596 | the_passwd.pw_uid = 123; | |
597 | the_passwd.pw_gid = the_passwd.pw_uid; | |
598 | } | |
599 | else | |
600 | { | |
601 | strcpy (the_passwd.pw_name, "unknown"); | |
602 | the_passwd.pw_uid = 123; | |
603 | the_passwd.pw_gid = 123; | |
d1c1c3d2 | 604 | } |
95ed0025 | 605 | |
480b0c5b GV |
606 | /* Ensure HOME and SHELL are defined. */ |
607 | if (getenv ("HOME") == NULL) | |
ca149beb | 608 | abort (); |
480b0c5b | 609 | if (getenv ("SHELL") == NULL) |
ca149beb | 610 | abort (); |
95ed0025 | 611 | |
480b0c5b GV |
612 | /* Set dir and shell from environment variables. */ |
613 | strcpy (the_passwd.pw_dir, getenv ("HOME")); | |
614 | strcpy (the_passwd.pw_shell, getenv ("SHELL")); | |
bd4a449f | 615 | |
480b0c5b GV |
616 | if (token) |
617 | CloseHandle (token); | |
95ed0025 RS |
618 | } |
619 | ||
95ed0025 | 620 | int |
480b0c5b | 621 | random () |
95ed0025 | 622 | { |
480b0c5b GV |
623 | /* rand () on NT gives us 15 random bits...hack together 30 bits. */ |
624 | return ((rand () << 15) | rand ()); | |
95ed0025 RS |
625 | } |
626 | ||
95ed0025 | 627 | void |
480b0c5b | 628 | srandom (int seed) |
95ed0025 | 629 | { |
480b0c5b | 630 | srand (seed); |
95ed0025 RS |
631 | } |
632 | ||
76b3903d | 633 | |
cbe39279 RS |
634 | /* Normalize filename by converting all path separators to |
635 | the specified separator. Also conditionally convert upper | |
636 | case path name components to lower case. */ | |
637 | ||
638 | static void | |
639 | normalize_filename (fp, path_sep) | |
640 | register char *fp; | |
641 | char path_sep; | |
642 | { | |
643 | char sep; | |
644 | char *elem; | |
645 | ||
5162ffce MB |
646 | /* Always lower-case drive letters a-z, even if the filesystem |
647 | preserves case in filenames. | |
648 | This is so filenames can be compared by string comparison | |
649 | functions that are case-sensitive. Even case-preserving filesystems | |
650 | do not distinguish case in drive letters. */ | |
651 | if (fp[1] == ':' && *fp >= 'A' && *fp <= 'Z') | |
652 | { | |
653 | *fp += 'a' - 'A'; | |
654 | fp += 2; | |
655 | } | |
656 | ||
fbd6baed | 657 | if (NILP (Vw32_downcase_file_names)) |
cbe39279 RS |
658 | { |
659 | while (*fp) | |
660 | { | |
661 | if (*fp == '/' || *fp == '\\') | |
662 | *fp = path_sep; | |
663 | fp++; | |
664 | } | |
665 | return; | |
666 | } | |
667 | ||
668 | sep = path_sep; /* convert to this path separator */ | |
669 | elem = fp; /* start of current path element */ | |
670 | ||
671 | do { | |
672 | if (*fp >= 'a' && *fp <= 'z') | |
673 | elem = 0; /* don't convert this element */ | |
674 | ||
675 | if (*fp == 0 || *fp == ':') | |
676 | { | |
677 | sep = *fp; /* restore current separator (or 0) */ | |
678 | *fp = '/'; /* after conversion of this element */ | |
679 | } | |
680 | ||
681 | if (*fp == '/' || *fp == '\\') | |
682 | { | |
683 | if (elem && elem != fp) | |
684 | { | |
685 | *fp = 0; /* temporary end of string */ | |
686 | _strlwr (elem); /* while we convert to lower case */ | |
687 | } | |
688 | *fp = sep; /* convert (or restore) path separator */ | |
689 | elem = fp + 1; /* next element starts after separator */ | |
690 | sep = path_sep; | |
691 | } | |
692 | } while (*fp++); | |
693 | } | |
694 | ||
480b0c5b | 695 | /* Destructively turn backslashes into slashes. */ |
95ed0025 | 696 | void |
480b0c5b GV |
697 | dostounix_filename (p) |
698 | register char *p; | |
95ed0025 | 699 | { |
cbe39279 | 700 | normalize_filename (p, '/'); |
95ed0025 RS |
701 | } |
702 | ||
480b0c5b | 703 | /* Destructively turn slashes into backslashes. */ |
95ed0025 | 704 | void |
480b0c5b GV |
705 | unixtodos_filename (p) |
706 | register char *p; | |
95ed0025 | 707 | { |
cbe39279 | 708 | normalize_filename (p, '\\'); |
95ed0025 RS |
709 | } |
710 | ||
480b0c5b GV |
711 | /* Remove all CR's that are followed by a LF. |
712 | (From msdos.c...probably should figure out a way to share it, | |
713 | although this code isn't going to ever change.) */ | |
35f0d482 | 714 | int |
480b0c5b GV |
715 | crlf_to_lf (n, buf) |
716 | register int n; | |
717 | register unsigned char *buf; | |
35f0d482 | 718 | { |
480b0c5b GV |
719 | unsigned char *np = buf; |
720 | unsigned char *startp = buf; | |
721 | unsigned char *endp = buf + n; | |
35f0d482 | 722 | |
480b0c5b GV |
723 | if (n == 0) |
724 | return n; | |
725 | while (buf < endp - 1) | |
95ed0025 | 726 | { |
480b0c5b GV |
727 | if (*buf == 0x0d) |
728 | { | |
729 | if (*(++buf) != 0x0a) | |
730 | *np++ = 0x0d; | |
731 | } | |
732 | else | |
733 | *np++ = *buf++; | |
95ed0025 | 734 | } |
480b0c5b GV |
735 | if (buf < endp) |
736 | *np++ = *buf++; | |
737 | return np - startp; | |
95ed0025 RS |
738 | } |
739 | ||
76b3903d GV |
740 | /* Parse the root part of file name, if present. Return length and |
741 | optionally store pointer to char after root. */ | |
742 | static int | |
743 | parse_root (char * name, char ** pPath) | |
744 | { | |
745 | char * start = name; | |
746 | ||
747 | if (name == NULL) | |
748 | return 0; | |
749 | ||
750 | /* find the root name of the volume if given */ | |
751 | if (isalpha (name[0]) && name[1] == ':') | |
752 | { | |
753 | /* skip past drive specifier */ | |
754 | name += 2; | |
755 | if (IS_DIRECTORY_SEP (name[0])) | |
756 | name++; | |
757 | } | |
758 | else if (IS_DIRECTORY_SEP (name[0]) && IS_DIRECTORY_SEP (name[1])) | |
759 | { | |
760 | int slashes = 2; | |
761 | name += 2; | |
762 | do | |
763 | { | |
764 | if (IS_DIRECTORY_SEP (*name) && --slashes == 0) | |
765 | break; | |
766 | name++; | |
767 | } | |
768 | while ( *name ); | |
769 | if (IS_DIRECTORY_SEP (name[0])) | |
770 | name++; | |
771 | } | |
772 | ||
773 | if (pPath) | |
774 | *pPath = name; | |
775 | ||
776 | return name - start; | |
777 | } | |
778 | ||
779 | /* Get long base name for name; name is assumed to be absolute. */ | |
780 | static int | |
781 | get_long_basename (char * name, char * buf, int size) | |
782 | { | |
783 | WIN32_FIND_DATA find_data; | |
784 | HANDLE dir_handle; | |
785 | int len = 0; | |
786 | ||
9ab8560d | 787 | /* must be valid filename, no wild cards or other invalid characters */ |
22189f79 | 788 | if (_mbspbrk (name, "*?|<>\"")) |
bb1584c8 RS |
789 | return 0; |
790 | ||
76b3903d GV |
791 | dir_handle = FindFirstFile (name, &find_data); |
792 | if (dir_handle != INVALID_HANDLE_VALUE) | |
793 | { | |
794 | if ((len = strlen (find_data.cFileName)) < size) | |
795 | memcpy (buf, find_data.cFileName, len + 1); | |
796 | else | |
797 | len = 0; | |
798 | FindClose (dir_handle); | |
799 | } | |
800 | return len; | |
801 | } | |
802 | ||
803 | /* Get long name for file, if possible (assumed to be absolute). */ | |
804 | BOOL | |
805 | w32_get_long_filename (char * name, char * buf, int size) | |
806 | { | |
807 | char * o = buf; | |
808 | char * p; | |
809 | char * q; | |
810 | char full[ MAX_PATH ]; | |
811 | int len; | |
812 | ||
813 | len = strlen (name); | |
814 | if (len >= MAX_PATH) | |
815 | return FALSE; | |
816 | ||
817 | /* Use local copy for destructive modification. */ | |
818 | memcpy (full, name, len+1); | |
819 | unixtodos_filename (full); | |
820 | ||
821 | /* Copy root part verbatim. */ | |
822 | len = parse_root (full, &p); | |
823 | memcpy (o, full, len); | |
824 | o += len; | |
4f8ac0b2 | 825 | *o = '\0'; |
76b3903d GV |
826 | size -= len; |
827 | ||
4f8ac0b2 | 828 | while (p != NULL && *p) |
76b3903d GV |
829 | { |
830 | q = p; | |
831 | p = strchr (q, '\\'); | |
832 | if (p) *p = '\0'; | |
833 | len = get_long_basename (full, o, size); | |
834 | if (len > 0) | |
835 | { | |
836 | o += len; | |
837 | size -= len; | |
838 | if (p != NULL) | |
839 | { | |
840 | *p++ = '\\'; | |
841 | if (size < 2) | |
842 | return FALSE; | |
843 | *o++ = '\\'; | |
844 | size--; | |
845 | *o = '\0'; | |
846 | } | |
847 | } | |
848 | else | |
849 | return FALSE; | |
850 | } | |
76b3903d GV |
851 | |
852 | return TRUE; | |
853 | } | |
854 | ||
9d3355d1 GV |
855 | int |
856 | is_unc_volume (const char *filename) | |
857 | { | |
858 | const char *ptr = filename; | |
859 | ||
860 | if (!IS_DIRECTORY_SEP (ptr[0]) || !IS_DIRECTORY_SEP (ptr[1]) || !ptr[2]) | |
861 | return 0; | |
862 | ||
22189f79 | 863 | if (_mbspbrk (ptr + 2, "*?|<>\"\\/")) |
9d3355d1 GV |
864 | return 0; |
865 | ||
866 | return 1; | |
867 | } | |
76b3903d | 868 | |
95ed0025 RS |
869 | /* Routines that are no-ops on NT but are defined to get Emacs to compile. */ |
870 | ||
177c0ea7 JB |
871 | int |
872 | sigsetmask (int signal_mask) | |
873 | { | |
95ed0025 RS |
874 | return 0; |
875 | } | |
876 | ||
177c0ea7 JB |
877 | int |
878 | sigmask (int sig) | |
879 | { | |
8f900f6e AI |
880 | return 0; |
881 | } | |
882 | ||
177c0ea7 JB |
883 | int |
884 | sigblock (int sig) | |
885 | { | |
95ed0025 RS |
886 | return 0; |
887 | } | |
888 | ||
177c0ea7 JB |
889 | int |
890 | sigunblock (int sig) | |
891 | { | |
8f900f6e AI |
892 | return 0; |
893 | } | |
894 | ||
177c0ea7 JB |
895 | int |
896 | setpgrp (int pid, int gid) | |
897 | { | |
95ed0025 RS |
898 | return 0; |
899 | } | |
900 | ||
177c0ea7 JB |
901 | int |
902 | alarm (int seconds) | |
903 | { | |
95ed0025 RS |
904 | return 0; |
905 | } | |
906 | ||
480b0c5b | 907 | #define REG_ROOT "SOFTWARE\\GNU\\Emacs" |
f332b293 | 908 | |
177c0ea7 | 909 | LPBYTE |
fbd6baed | 910 | w32_get_resource (key, lpdwtype) |
f332b293 GV |
911 | char *key; |
912 | LPDWORD lpdwtype; | |
913 | { | |
914 | LPBYTE lpvalue; | |
915 | HKEY hrootkey = NULL; | |
916 | DWORD cbData; | |
177c0ea7 JB |
917 | |
918 | /* Check both the current user and the local machine to see if | |
f332b293 | 919 | we have any resources. */ |
177c0ea7 | 920 | |
f332b293 GV |
921 | if (RegOpenKeyEx (HKEY_CURRENT_USER, REG_ROOT, 0, KEY_READ, &hrootkey) == ERROR_SUCCESS) |
922 | { | |
923 | lpvalue = NULL; | |
924 | ||
177c0ea7 JB |
925 | if (RegQueryValueEx (hrootkey, key, NULL, NULL, NULL, &cbData) == ERROR_SUCCESS |
926 | && (lpvalue = (LPBYTE) xmalloc (cbData)) != NULL | |
f332b293 GV |
927 | && RegQueryValueEx (hrootkey, key, NULL, lpdwtype, lpvalue, &cbData) == ERROR_SUCCESS) |
928 | { | |
4da4d9bb | 929 | RegCloseKey (hrootkey); |
f332b293 GV |
930 | return (lpvalue); |
931 | } | |
932 | ||
933 | if (lpvalue) xfree (lpvalue); | |
177c0ea7 | 934 | |
f332b293 | 935 | RegCloseKey (hrootkey); |
177c0ea7 JB |
936 | } |
937 | ||
f332b293 GV |
938 | if (RegOpenKeyEx (HKEY_LOCAL_MACHINE, REG_ROOT, 0, KEY_READ, &hrootkey) == ERROR_SUCCESS) |
939 | { | |
940 | lpvalue = NULL; | |
177c0ea7 | 941 | |
76b3903d GV |
942 | if (RegQueryValueEx (hrootkey, key, NULL, NULL, NULL, &cbData) == ERROR_SUCCESS |
943 | && (lpvalue = (LPBYTE) xmalloc (cbData)) != NULL | |
944 | && RegQueryValueEx (hrootkey, key, NULL, lpdwtype, lpvalue, &cbData) == ERROR_SUCCESS) | |
f332b293 | 945 | { |
4da4d9bb | 946 | RegCloseKey (hrootkey); |
f332b293 GV |
947 | return (lpvalue); |
948 | } | |
177c0ea7 | 949 | |
f332b293 | 950 | if (lpvalue) xfree (lpvalue); |
177c0ea7 | 951 | |
f332b293 | 952 | RegCloseKey (hrootkey); |
177c0ea7 JB |
953 | } |
954 | ||
f332b293 GV |
955 | return (NULL); |
956 | } | |
957 | ||
75b08edb GV |
958 | char *get_emacs_configuration (void); |
959 | extern Lisp_Object Vsystem_configuration; | |
960 | ||
f332b293 | 961 | void |
aa7b87b0 | 962 | init_environment (char ** argv) |
f332b293 | 963 | { |
b3308d2e KH |
964 | static const char * const tempdirs[] = { |
965 | "$TMPDIR", "$TEMP", "$TMP", "c:/" | |
966 | }; | |
2d5324c5 | 967 | |
b3308d2e | 968 | int i; |
2d5324c5 | 969 | |
b3308d2e KH |
970 | const int imax = sizeof (tempdirs) / sizeof (tempdirs[0]); |
971 | ||
972 | /* Make sure they have a usable $TMPDIR. Many Emacs functions use | |
973 | temporary files and assume "/tmp" if $TMPDIR is unset, which | |
974 | will break on DOS/Windows. Refuse to work if we cannot find | |
975 | a directory, not even "c:/", usable for that purpose. */ | |
976 | for (i = 0; i < imax ; i++) | |
977 | { | |
978 | const char *tmp = tempdirs[i]; | |
979 | ||
980 | if (*tmp == '$') | |
981 | tmp = getenv (tmp + 1); | |
982 | /* Note that `access' can lie to us if the directory resides on a | |
983 | read-only filesystem, like CD-ROM or a write-protected floppy. | |
984 | The only way to be really sure is to actually create a file and | |
985 | see if it succeeds. But I think that's too much to ask. */ | |
a302c7ae | 986 | if (tmp && _access (tmp, D_OK) == 0) |
b3308d2e KH |
987 | { |
988 | char * var = alloca (strlen (tmp) + 8); | |
989 | sprintf (var, "TMPDIR=%s", tmp); | |
aca583b2 | 990 | _putenv (strdup (var)); |
b3308d2e KH |
991 | break; |
992 | } | |
993 | } | |
994 | if (i >= imax) | |
995 | cmd_error_internal | |
996 | (Fcons (Qerror, | |
997 | Fcons (build_string ("no usable temporary directories found!!"), | |
998 | Qnil)), | |
999 | "While setting TMPDIR: "); | |
1000 | ||
ca149beb AI |
1001 | /* Check for environment variables and use registry settings if they |
1002 | don't exist. Fallback on default values where applicable. */ | |
f332b293 | 1003 | { |
480b0c5b GV |
1004 | int i; |
1005 | LPBYTE lpval; | |
1006 | DWORD dwType; | |
69fb0241 | 1007 | char locale_name[32]; |
2d5324c5 JR |
1008 | struct stat ignored; |
1009 | char default_home[MAX_PATH]; | |
f332b293 | 1010 | |
e00b99c8 | 1011 | static const struct env_entry |
ca149beb AI |
1012 | { |
1013 | char * name; | |
1014 | char * def_value; | |
e00b99c8 | 1015 | } dflt_envvars[] = |
ca149beb AI |
1016 | { |
1017 | {"HOME", "C:/"}, | |
1018 | {"PRELOAD_WINSOCK", NULL}, | |
1019 | {"emacs_dir", "C:/emacs"}, | |
cc14250a | 1020 | {"EMACSLOADPATH", "%emacs_dir%/site-lisp;%emacs_dir%/../site-lisp;%emacs_dir%/lisp;%emacs_dir%/leim"}, |
ca149beb AI |
1021 | {"SHELL", "%emacs_dir%/bin/cmdproxy.exe"}, |
1022 | {"EMACSDATA", "%emacs_dir%/etc"}, | |
1023 | {"EMACSPATH", "%emacs_dir%/bin"}, | |
76b3903d | 1024 | /* We no longer set INFOPATH because Info-default-directory-list |
ca149beb AI |
1025 | is then ignored. */ |
1026 | /* {"INFOPATH", "%emacs_dir%/info"}, */ | |
1027 | {"EMACSDOC", "%emacs_dir%/etc"}, | |
69fb0241 JR |
1028 | {"TERM", "cmd"}, |
1029 | {"LANG", NULL}, | |
480b0c5b GV |
1030 | }; |
1031 | ||
e00b99c8 EZ |
1032 | #define N_ENV_VARS sizeof(dflt_envvars)/sizeof(dflt_envvars[0]) |
1033 | ||
1034 | /* We need to copy dflt_envvars[] and work on the copy because we | |
1035 | don't want the dumped Emacs to inherit the values of | |
1036 | environment variables we saw during dumping (which could be on | |
1037 | a different system). The defaults above must be left intact. */ | |
1038 | struct env_entry env_vars[N_ENV_VARS]; | |
1039 | ||
1040 | for (i = 0; i < N_ENV_VARS; i++) | |
1041 | env_vars[i] = dflt_envvars[i]; | |
1042 | ||
2d5324c5 JR |
1043 | /* For backwards compatibility, check if a .emacs file exists in C:/ |
1044 | If not, then we can try to default to the appdata directory under the | |
1045 | user's profile, which is more likely to be writable. */ | |
1046 | if (stat ("C:/.emacs", &ignored) < 0) | |
1047 | { | |
1048 | HRESULT profile_result; | |
1049 | /* Dynamically load ShGetFolderPath, as it won't exist on versions | |
1050 | of Windows 95 and NT4 that have not been updated to include | |
1051 | MSIE 5. Also we don't link with shell32.dll by default. */ | |
1052 | HMODULE shell32_dll; | |
1053 | ShGetFolderPath_fn get_folder_path; | |
1054 | shell32_dll = GetModuleHandle ("shell32.dll"); | |
1055 | get_folder_path = (ShGetFolderPath_fn) | |
1056 | GetProcAddress (shell32_dll, "SHGetFolderPathA"); | |
1057 | ||
1058 | if (get_folder_path != NULL) | |
1059 | { | |
1060 | profile_result = get_folder_path (NULL, CSIDL_APPDATA, NULL, | |
1061 | 0, default_home); | |
1062 | ||
1063 | /* If we can't get the appdata dir, revert to old behaviour. */ | |
1064 | if (profile_result == S_OK) | |
1065 | env_vars[0].def_value = default_home; | |
1066 | } | |
1067 | ||
1068 | /* Unload shell32.dll, it is not needed anymore. */ | |
1069 | FreeLibrary (shell32_dll); | |
1070 | } | |
1071 | ||
69fb0241 JR |
1072 | /* Get default locale info and use it for LANG. */ |
1073 | if (GetLocaleInfo (LOCALE_USER_DEFAULT, | |
1074 | LOCALE_SABBREVLANGNAME | LOCALE_USE_CP_ACP, | |
1075 | locale_name, sizeof (locale_name))) | |
1076 | { | |
e00b99c8 | 1077 | for (i = 0; i < N_ENV_VARS; i++) |
69fb0241 JR |
1078 | { |
1079 | if (strcmp (env_vars[i].name, "LANG") == 0) | |
1080 | { | |
1081 | env_vars[i].def_value = locale_name; | |
1082 | break; | |
1083 | } | |
1084 | } | |
1085 | } | |
1086 | ||
ca149beb AI |
1087 | #define SET_ENV_BUF_SIZE (4 * MAX_PATH) /* to cover EMACSLOADPATH */ |
1088 | ||
1089 | /* Treat emacs_dir specially: set it unconditionally based on our | |
1090 | location, if it appears that we are running from the bin subdir | |
1091 | of a standard installation. */ | |
1092 | { | |
1093 | char *p; | |
1094 | char modname[MAX_PATH]; | |
1095 | ||
1096 | if (!GetModuleFileName (NULL, modname, MAX_PATH)) | |
1097 | abort (); | |
1098 | if ((p = strrchr (modname, '\\')) == NULL) | |
1099 | abort (); | |
1100 | *p = 0; | |
1101 | ||
1102 | if ((p = strrchr (modname, '\\')) && stricmp (p, "\\bin") == 0) | |
1103 | { | |
1104 | char buf[SET_ENV_BUF_SIZE]; | |
1105 | ||
1106 | *p = 0; | |
1107 | for (p = modname; *p; p++) | |
1108 | if (*p == '\\') *p = '/'; | |
177c0ea7 | 1109 | |
ca149beb | 1110 | _snprintf (buf, sizeof(buf)-1, "emacs_dir=%s", modname); |
a302c7ae | 1111 | _putenv (strdup (buf)); |
ca149beb | 1112 | } |
950090be JR |
1113 | /* Handle running emacs from the build directory: src/oo-spd/i386/ */ |
1114 | ||
1115 | /* FIXME: should use substring of get_emacs_configuration (). | |
1116 | But I don't think the Windows build supports alpha, mips etc | |
1117 | anymore, so have taken the easy option for now. */ | |
1118 | else if (p && stricmp (p, "\\i386") == 0) | |
1119 | { | |
1120 | *p = 0; | |
1121 | p = strrchr (modname, '\\'); | |
1122 | if (p != NULL) | |
1123 | { | |
1124 | *p = 0; | |
1125 | p = strrchr (modname, '\\'); | |
1126 | if (p && stricmp (p, "\\src") == 0) | |
1127 | { | |
1128 | char buf[SET_ENV_BUF_SIZE]; | |
1129 | ||
1130 | *p = 0; | |
1131 | for (p = modname; *p; p++) | |
1132 | if (*p == '\\') *p = '/'; | |
1133 | ||
1134 | _snprintf (buf, sizeof(buf)-1, "emacs_dir=%s", modname); | |
1135 | _putenv (strdup (buf)); | |
1136 | } | |
1137 | } | |
1138 | } | |
ca149beb AI |
1139 | } |
1140 | ||
e00b99c8 | 1141 | for (i = 0; i < N_ENV_VARS; i++) |
f332b293 | 1142 | { |
ca149beb | 1143 | if (!getenv (env_vars[i].name)) |
480b0c5b | 1144 | { |
ca149beb | 1145 | int dont_free = 0; |
480b0c5b | 1146 | |
aa5ee2a3 JB |
1147 | if ((lpval = w32_get_resource (env_vars[i].name, &dwType)) == NULL |
1148 | /* Also ignore empty environment variables. */ | |
1149 | || *lpval == 0) | |
ca149beb | 1150 | { |
14c71d8b | 1151 | if (lpval) xfree (lpval); |
ca149beb AI |
1152 | lpval = env_vars[i].def_value; |
1153 | dwType = REG_EXPAND_SZ; | |
1154 | dont_free = 1; | |
480b0c5b | 1155 | } |
ca149beb AI |
1156 | |
1157 | if (lpval) | |
480b0c5b | 1158 | { |
892eb237 | 1159 | char buf1[SET_ENV_BUF_SIZE], buf2[SET_ENV_BUF_SIZE]; |
ca149beb | 1160 | |
892eb237 EZ |
1161 | if (dwType == REG_EXPAND_SZ) |
1162 | ExpandEnvironmentStrings ((LPSTR) lpval, buf1, sizeof(buf1)); | |
ca149beb | 1163 | else if (dwType == REG_SZ) |
892eb237 EZ |
1164 | strcpy (buf1, lpval); |
1165 | if (dwType == REG_EXPAND_SZ || dwType == REG_SZ) | |
ca149beb | 1166 | { |
892eb237 EZ |
1167 | _snprintf (buf2, sizeof(buf2)-1, "%s=%s", env_vars[i].name, |
1168 | buf1); | |
1169 | _putenv (strdup (buf2)); | |
ca149beb | 1170 | } |
f332b293 | 1171 | |
ca149beb AI |
1172 | if (!dont_free) |
1173 | xfree (lpval); | |
1174 | } | |
480b0c5b GV |
1175 | } |
1176 | } | |
1177 | } | |
1178 | ||
75b08edb GV |
1179 | /* Rebuild system configuration to reflect invoking system. */ |
1180 | Vsystem_configuration = build_string (EMACS_CONFIGURATION); | |
1181 | ||
76b3903d GV |
1182 | /* Another special case: on NT, the PATH variable is actually named |
1183 | "Path" although cmd.exe (perhaps NT itself) arranges for | |
1184 | environment variable lookup and setting to be case insensitive. | |
1185 | However, Emacs assumes a fully case sensitive environment, so we | |
1186 | need to change "Path" to "PATH" to match the expectations of | |
1187 | various elisp packages. We do this by the sneaky method of | |
1188 | modifying the string in the C runtime environ entry. | |
1189 | ||
1190 | The same applies to COMSPEC. */ | |
1191 | { | |
1192 | char ** envp; | |
1193 | ||
1194 | for (envp = environ; *envp; envp++) | |
1195 | if (_strnicmp (*envp, "PATH=", 5) == 0) | |
1196 | memcpy (*envp, "PATH=", 5); | |
1197 | else if (_strnicmp (*envp, "COMSPEC=", 8) == 0) | |
1198 | memcpy (*envp, "COMSPEC=", 8); | |
1199 | } | |
1200 | ||
1201 | /* Remember the initial working directory for getwd, then make the | |
1202 | real wd be the location of emacs.exe to avoid conflicts when | |
1203 | renaming or deleting directories. (We also don't call chdir when | |
1204 | running subprocesses for the same reason.) */ | |
1205 | if (!GetCurrentDirectory (MAXPATHLEN, startup_dir)) | |
1206 | abort (); | |
1207 | ||
1208 | { | |
1209 | char *p; | |
aa7b87b0 | 1210 | static char modname[MAX_PATH]; |
76b3903d GV |
1211 | |
1212 | if (!GetModuleFileName (NULL, modname, MAX_PATH)) | |
1213 | abort (); | |
1214 | if ((p = strrchr (modname, '\\')) == NULL) | |
1215 | abort (); | |
1216 | *p = 0; | |
1217 | ||
1218 | SetCurrentDirectory (modname); | |
aa7b87b0 AI |
1219 | |
1220 | /* Ensure argv[0] has the full path to Emacs. */ | |
1221 | *p = '\\'; | |
1222 | argv[0] = modname; | |
76b3903d GV |
1223 | } |
1224 | ||
20af4831 JR |
1225 | /* Determine if there is a middle mouse button, to allow parse_button |
1226 | to decide whether right mouse events should be mouse-2 or | |
1227 | mouse-3. */ | |
e0c181dd | 1228 | w32_num_mouse_buttons = GetSystemMetrics (SM_CMOUSEBUTTONS); |
20af4831 | 1229 | |
480b0c5b GV |
1230 | init_user_info (); |
1231 | } | |
1232 | ||
bf794306 EZ |
1233 | char * |
1234 | emacs_root_dir (void) | |
1235 | { | |
1236 | static char root_dir[FILENAME_MAX]; | |
1237 | const char *p; | |
1238 | ||
1239 | p = getenv ("emacs_dir"); | |
1240 | if (p == NULL) | |
1241 | abort (); | |
1242 | strcpy (root_dir, p); | |
1243 | root_dir[parse_root (root_dir, NULL)] = '\0'; | |
1244 | dostounix_filename (root_dir); | |
1245 | return root_dir; | |
1246 | } | |
1247 | ||
480b0c5b GV |
1248 | /* We don't have scripts to automatically determine the system configuration |
1249 | for Emacs before it's compiled, and we don't want to have to make the | |
1250 | user enter it, so we define EMACS_CONFIGURATION to invoke this runtime | |
1251 | routine. */ | |
1252 | ||
480b0c5b GV |
1253 | char * |
1254 | get_emacs_configuration (void) | |
1255 | { | |
1256 | char *arch, *oem, *os; | |
c5247da2 | 1257 | int build_num; |
a302c7ae | 1258 | static char configuration_buffer[32]; |
480b0c5b GV |
1259 | |
1260 | /* Determine the processor type. */ | |
177c0ea7 | 1261 | switch (get_processor_type ()) |
480b0c5b GV |
1262 | { |
1263 | ||
1264 | #ifdef PROCESSOR_INTEL_386 | |
1265 | case PROCESSOR_INTEL_386: | |
1266 | case PROCESSOR_INTEL_486: | |
1267 | case PROCESSOR_INTEL_PENTIUM: | |
1268 | arch = "i386"; | |
1269 | break; | |
1270 | #endif | |
1271 | ||
480b0c5b GV |
1272 | #ifdef PROCESSOR_MIPS_R2000 |
1273 | case PROCESSOR_MIPS_R2000: | |
1274 | case PROCESSOR_MIPS_R3000: | |
1275 | case PROCESSOR_MIPS_R4000: | |
1276 | arch = "mips"; | |
1277 | break; | |
1278 | #endif | |
1279 | ||
1280 | #ifdef PROCESSOR_ALPHA_21064 | |
1281 | case PROCESSOR_ALPHA_21064: | |
1282 | arch = "alpha"; | |
1283 | break; | |
1284 | #endif | |
1285 | ||
1286 | default: | |
1287 | arch = "unknown"; | |
1288 | break; | |
f332b293 | 1289 | } |
480b0c5b | 1290 | |
a302c7ae AI |
1291 | /* Use the OEM field to reflect the compiler/library combination. */ |
1292 | #ifdef _MSC_VER | |
1293 | #define COMPILER_NAME "msvc" | |
1294 | #else | |
1295 | #ifdef __GNUC__ | |
1296 | #define COMPILER_NAME "mingw" | |
1297 | #else | |
1298 | #define COMPILER_NAME "unknown" | |
1299 | #endif | |
1300 | #endif | |
1301 | oem = COMPILER_NAME; | |
480b0c5b | 1302 | |
c5247da2 GV |
1303 | switch (osinfo_cache.dwPlatformId) { |
1304 | case VER_PLATFORM_WIN32_NT: | |
1305 | os = "nt"; | |
1306 | build_num = osinfo_cache.dwBuildNumber; | |
1307 | break; | |
1308 | case VER_PLATFORM_WIN32_WINDOWS: | |
1309 | if (osinfo_cache.dwMinorVersion == 0) { | |
1310 | os = "windows95"; | |
1311 | } else { | |
1312 | os = "windows98"; | |
1313 | } | |
1314 | build_num = LOWORD (osinfo_cache.dwBuildNumber); | |
1315 | break; | |
1316 | case VER_PLATFORM_WIN32s: | |
1317 | /* Not supported, should not happen. */ | |
1318 | os = "windows32s"; | |
1319 | build_num = LOWORD (osinfo_cache.dwBuildNumber); | |
1320 | break; | |
1321 | default: | |
1322 | os = "unknown"; | |
1323 | build_num = 0; | |
1324 | break; | |
1325 | } | |
1326 | ||
1327 | if (osinfo_cache.dwPlatformId == VER_PLATFORM_WIN32_NT) { | |
1328 | sprintf (configuration_buffer, "%s-%s-%s%d.%d.%d", arch, oem, os, | |
1329 | get_w32_major_version (), get_w32_minor_version (), build_num); | |
1330 | } else { | |
1331 | sprintf (configuration_buffer, "%s-%s-%s.%d", arch, oem, os, build_num); | |
1332 | } | |
480b0c5b | 1333 | |
480b0c5b | 1334 | return configuration_buffer; |
f332b293 GV |
1335 | } |
1336 | ||
a302c7ae AI |
1337 | char * |
1338 | get_emacs_configuration_options (void) | |
1339 | { | |
1340 | static char options_buffer[256]; | |
1341 | ||
1342 | /* Work out the effective configure options for this build. */ | |
1343 | #ifdef _MSC_VER | |
1344 | #define COMPILER_VERSION "--with-msvc (%d.%02d)", _MSC_VER / 100, _MSC_VER % 100 | |
1345 | #else | |
1346 | #ifdef __GNUC__ | |
1347 | #define COMPILER_VERSION "--with-gcc (%d.%d)", __GNUC__, __GNUC_MINOR__ | |
1348 | #else | |
1349 | #define COMPILER_VERSION "" | |
1350 | #endif | |
1351 | #endif | |
1352 | ||
1353 | sprintf (options_buffer, COMPILER_VERSION); | |
1354 | #ifdef EMACSDEBUG | |
1355 | strcat (options_buffer, " --no-opt"); | |
1356 | #endif | |
1357 | #ifdef USER_CFLAGS | |
1358 | strcat (options_buffer, " --cflags"); | |
1359 | strcat (options_buffer, USER_CFLAGS); | |
1360 | #endif | |
1361 | #ifdef USER_LDFLAGS | |
1362 | strcat (options_buffer, " --ldflags"); | |
1363 | strcat (options_buffer, USER_LDFLAGS); | |
1364 | #endif | |
1365 | return options_buffer; | |
1366 | } | |
1367 | ||
1368 | ||
35f0d482 KH |
1369 | #include <sys/timeb.h> |
1370 | ||
1371 | /* Emulate gettimeofday (Ulrich Leodolter, 1/11/95). */ | |
177c0ea7 | 1372 | void |
35f0d482 KH |
1373 | gettimeofday (struct timeval *tv, struct timezone *tz) |
1374 | { | |
6e602566 | 1375 | struct _timeb tb; |
35f0d482 KH |
1376 | _ftime (&tb); |
1377 | ||
1378 | tv->tv_sec = tb.time; | |
1379 | tv->tv_usec = tb.millitm * 1000L; | |
177c0ea7 | 1380 | if (tz) |
35f0d482 KH |
1381 | { |
1382 | tz->tz_minuteswest = tb.timezone; /* minutes west of Greenwich */ | |
1383 | tz->tz_dsttime = tb.dstflag; /* type of dst correction */ | |
1384 | } | |
1385 | } | |
35f0d482 | 1386 | |
480b0c5b | 1387 | /* ------------------------------------------------------------------------- */ |
fbd6baed | 1388 | /* IO support and wrapper functions for W32 API. */ |
480b0c5b | 1389 | /* ------------------------------------------------------------------------- */ |
95ed0025 | 1390 | |
480b0c5b | 1391 | /* Place a wrapper around the MSVC version of ctime. It returns NULL |
177c0ea7 | 1392 | on network directories, so we handle that case here. |
480b0c5b GV |
1393 | (Ulrich Leodolter, 1/11/95). */ |
1394 | char * | |
1395 | sys_ctime (const time_t *t) | |
1396 | { | |
1397 | char *str = (char *) ctime (t); | |
1398 | return (str ? str : "Sun Jan 01 00:00:00 1970"); | |
1399 | } | |
1400 | ||
1401 | /* Emulate sleep...we could have done this with a define, but that | |
1402 | would necessitate including windows.h in the files that used it. | |
1403 | This is much easier. */ | |
1404 | void | |
1405 | sys_sleep (int seconds) | |
1406 | { | |
1407 | Sleep (seconds * 1000); | |
1408 | } | |
1409 | ||
76b3903d | 1410 | /* Internal MSVC functions for low-level descriptor munging */ |
480b0c5b GV |
1411 | extern int __cdecl _set_osfhnd (int fd, long h); |
1412 | extern int __cdecl _free_osfhnd (int fd); | |
1413 | ||
1414 | /* parallel array of private info on file handles */ | |
1415 | filedesc fd_info [ MAXDESC ]; | |
1416 | ||
76b3903d GV |
1417 | typedef struct volume_info_data { |
1418 | struct volume_info_data * next; | |
1419 | ||
1420 | /* time when info was obtained */ | |
1421 | DWORD timestamp; | |
1422 | ||
1423 | /* actual volume info */ | |
1424 | char * root_dir; | |
480b0c5b GV |
1425 | DWORD serialnum; |
1426 | DWORD maxcomp; | |
1427 | DWORD flags; | |
76b3903d GV |
1428 | char * name; |
1429 | char * type; | |
1430 | } volume_info_data; | |
1431 | ||
1432 | /* Global referenced by various functions. */ | |
1433 | static volume_info_data volume_info; | |
1434 | ||
1435 | /* Vector to indicate which drives are local and fixed (for which cached | |
1436 | data never expires). */ | |
1437 | static BOOL fixed_drives[26]; | |
1438 | ||
1439 | /* Consider cached volume information to be stale if older than 10s, | |
1440 | at least for non-local drives. Info for fixed drives is never stale. */ | |
1441 | #define DRIVE_INDEX( c ) ( (c) <= 'Z' ? (c) - 'A' : (c) - 'a' ) | |
1442 | #define VOLINFO_STILL_VALID( root_dir, info ) \ | |
1443 | ( ( isalpha (root_dir[0]) && \ | |
1444 | fixed_drives[ DRIVE_INDEX (root_dir[0]) ] ) \ | |
1445 | || GetTickCount () - info->timestamp < 10000 ) | |
1446 | ||
1447 | /* Cache support functions. */ | |
1448 | ||
1449 | /* Simple linked list with linear search is sufficient. */ | |
1450 | static volume_info_data *volume_cache = NULL; | |
1451 | ||
1452 | static volume_info_data * | |
1453 | lookup_volume_info (char * root_dir) | |
1454 | { | |
1455 | volume_info_data * info; | |
1456 | ||
1457 | for (info = volume_cache; info; info = info->next) | |
1458 | if (stricmp (info->root_dir, root_dir) == 0) | |
1459 | break; | |
1460 | return info; | |
1461 | } | |
1462 | ||
1463 | static void | |
1464 | add_volume_info (char * root_dir, volume_info_data * info) | |
1465 | { | |
a302c7ae | 1466 | info->root_dir = xstrdup (root_dir); |
76b3903d GV |
1467 | info->next = volume_cache; |
1468 | volume_cache = info; | |
1469 | } | |
1470 | ||
1471 | ||
1472 | /* Wrapper for GetVolumeInformation, which uses caching to avoid | |
1473 | performance penalty (~2ms on 486 for local drives, 7.5ms for local | |
1474 | cdrom drive, ~5-10ms or more for remote drives on LAN). */ | |
1475 | volume_info_data * | |
1476 | GetCachedVolumeInformation (char * root_dir) | |
1477 | { | |
1478 | volume_info_data * info; | |
1479 | char default_root[ MAX_PATH ]; | |
1480 | ||
1481 | /* NULL for root_dir means use root from current directory. */ | |
1482 | if (root_dir == NULL) | |
1483 | { | |
1484 | if (GetCurrentDirectory (MAX_PATH, default_root) == 0) | |
1485 | return NULL; | |
1486 | parse_root (default_root, &root_dir); | |
1487 | *root_dir = 0; | |
1488 | root_dir = default_root; | |
1489 | } | |
1490 | ||
1491 | /* Local fixed drives can be cached permanently. Removable drives | |
1492 | cannot be cached permanently, since the volume name and serial | |
1493 | number (if nothing else) can change. Remote drives should be | |
1494 | treated as if they are removable, since there is no sure way to | |
1495 | tell whether they are or not. Also, the UNC association of drive | |
1496 | letters mapped to remote volumes can be changed at any time (even | |
1497 | by other processes) without notice. | |
177c0ea7 | 1498 | |
76b3903d GV |
1499 | As a compromise, so we can benefit from caching info for remote |
1500 | volumes, we use a simple expiry mechanism to invalidate cache | |
1501 | entries that are more than ten seconds old. */ | |
1502 | ||
1503 | #if 0 | |
1504 | /* No point doing this, because WNetGetConnection is even slower than | |
1505 | GetVolumeInformation, consistently taking ~50ms on a 486 (FWIW, | |
1506 | GetDriveType is about the only call of this type which does not | |
1507 | involve network access, and so is extremely quick). */ | |
1508 | ||
1509 | /* Map drive letter to UNC if remote. */ | |
1510 | if ( isalpha( root_dir[0] ) && !fixed[ DRIVE_INDEX( root_dir[0] ) ] ) | |
1511 | { | |
1512 | char remote_name[ 256 ]; | |
1513 | char drive[3] = { root_dir[0], ':' }; | |
1514 | ||
1515 | if (WNetGetConnection (drive, remote_name, sizeof (remote_name)) | |
1516 | == NO_ERROR) | |
1517 | /* do something */ ; | |
1518 | } | |
1519 | #endif | |
1520 | ||
1521 | info = lookup_volume_info (root_dir); | |
1522 | ||
1523 | if (info == NULL || ! VOLINFO_STILL_VALID (root_dir, info)) | |
1524 | { | |
1525 | char name[ 256 ]; | |
1526 | DWORD serialnum; | |
1527 | DWORD maxcomp; | |
1528 | DWORD flags; | |
1529 | char type[ 256 ]; | |
1530 | ||
1531 | /* Info is not cached, or is stale. */ | |
1532 | if (!GetVolumeInformation (root_dir, | |
1533 | name, sizeof (name), | |
1534 | &serialnum, | |
1535 | &maxcomp, | |
1536 | &flags, | |
1537 | type, sizeof (type))) | |
1538 | return NULL; | |
1539 | ||
1540 | /* Cache the volume information for future use, overwriting existing | |
1541 | entry if present. */ | |
1542 | if (info == NULL) | |
1543 | { | |
1544 | info = (volume_info_data *) xmalloc (sizeof (volume_info_data)); | |
1545 | add_volume_info (root_dir, info); | |
1546 | } | |
1547 | else | |
1548 | { | |
a302c7ae AI |
1549 | xfree (info->name); |
1550 | xfree (info->type); | |
76b3903d GV |
1551 | } |
1552 | ||
a302c7ae | 1553 | info->name = xstrdup (name); |
76b3903d GV |
1554 | info->serialnum = serialnum; |
1555 | info->maxcomp = maxcomp; | |
1556 | info->flags = flags; | |
a302c7ae | 1557 | info->type = xstrdup (type); |
76b3903d GV |
1558 | info->timestamp = GetTickCount (); |
1559 | } | |
1560 | ||
1561 | return info; | |
1562 | } | |
480b0c5b GV |
1563 | |
1564 | /* Get information on the volume where name is held; set path pointer to | |
1565 | start of pathname in name (past UNC header\volume header if present). */ | |
1566 | int | |
1567 | get_volume_info (const char * name, const char ** pPath) | |
95ed0025 | 1568 | { |
480b0c5b GV |
1569 | char temp[MAX_PATH]; |
1570 | char *rootname = NULL; /* default to current volume */ | |
76b3903d | 1571 | volume_info_data * info; |
480b0c5b GV |
1572 | |
1573 | if (name == NULL) | |
1574 | return FALSE; | |
1575 | ||
1576 | /* find the root name of the volume if given */ | |
1577 | if (isalpha (name[0]) && name[1] == ':') | |
1578 | { | |
1579 | rootname = temp; | |
1580 | temp[0] = *name++; | |
1581 | temp[1] = *name++; | |
1582 | temp[2] = '\\'; | |
1583 | temp[3] = 0; | |
1584 | } | |
1585 | else if (IS_DIRECTORY_SEP (name[0]) && IS_DIRECTORY_SEP (name[1])) | |
95ed0025 | 1586 | { |
480b0c5b GV |
1587 | char *str = temp; |
1588 | int slashes = 4; | |
1589 | rootname = temp; | |
1590 | do | |
1591 | { | |
1592 | if (IS_DIRECTORY_SEP (*name) && --slashes == 0) | |
1593 | break; | |
1594 | *str++ = *name++; | |
1595 | } | |
1596 | while ( *name ); | |
1597 | ||
480b0c5b GV |
1598 | *str++ = '\\'; |
1599 | *str = 0; | |
95ed0025 | 1600 | } |
480b0c5b GV |
1601 | |
1602 | if (pPath) | |
1603 | *pPath = name; | |
177c0ea7 | 1604 | |
76b3903d GV |
1605 | info = GetCachedVolumeInformation (rootname); |
1606 | if (info != NULL) | |
95ed0025 | 1607 | { |
76b3903d GV |
1608 | /* Set global referenced by other functions. */ |
1609 | volume_info = *info; | |
480b0c5b | 1610 | return TRUE; |
95ed0025 | 1611 | } |
480b0c5b GV |
1612 | return FALSE; |
1613 | } | |
1614 | ||
1615 | /* Determine if volume is FAT format (ie. only supports short 8.3 | |
1616 | names); also set path pointer to start of pathname in name. */ | |
1617 | int | |
1618 | is_fat_volume (const char * name, const char ** pPath) | |
1619 | { | |
1620 | if (get_volume_info (name, pPath)) | |
1621 | return (volume_info.maxcomp == 12); | |
1622 | return FALSE; | |
1623 | } | |
1624 | ||
1625 | /* Map filename to a legal 8.3 name if necessary. */ | |
1626 | const char * | |
fbd6baed | 1627 | map_w32_filename (const char * name, const char ** pPath) |
480b0c5b GV |
1628 | { |
1629 | static char shortname[MAX_PATH]; | |
1630 | char * str = shortname; | |
1631 | char c; | |
480b0c5b | 1632 | char * path; |
76b3903d | 1633 | const char * save_name = name; |
480b0c5b | 1634 | |
ca149beb AI |
1635 | if (strlen (name) >= MAX_PATH) |
1636 | { | |
1637 | /* Return a filename which will cause callers to fail. */ | |
1638 | strcpy (shortname, "?"); | |
1639 | return shortname; | |
1640 | } | |
1641 | ||
a302c7ae | 1642 | if (is_fat_volume (name, (const char **)&path)) /* truncate to 8.3 */ |
95ed0025 | 1643 | { |
480b0c5b GV |
1644 | register int left = 8; /* maximum number of chars in part */ |
1645 | register int extn = 0; /* extension added? */ | |
1646 | register int dots = 2; /* maximum number of dots allowed */ | |
1647 | ||
1648 | while (name < path) | |
1649 | *str++ = *name++; /* skip past UNC header */ | |
1650 | ||
1651 | while ((c = *name++)) | |
1652 | { | |
1653 | switch ( c ) | |
1654 | { | |
1655 | case '\\': | |
1656 | case '/': | |
1657 | *str++ = '\\'; | |
1658 | extn = 0; /* reset extension flags */ | |
1659 | dots = 2; /* max 2 dots */ | |
1660 | left = 8; /* max length 8 for main part */ | |
1661 | break; | |
1662 | case ':': | |
1663 | *str++ = ':'; | |
1664 | extn = 0; /* reset extension flags */ | |
1665 | dots = 2; /* max 2 dots */ | |
1666 | left = 8; /* max length 8 for main part */ | |
1667 | break; | |
1668 | case '.': | |
1669 | if ( dots ) | |
1670 | { | |
1671 | /* Convert path components of the form .xxx to _xxx, | |
1672 | but leave . and .. as they are. This allows .emacs | |
1673 | to be read as _emacs, for example. */ | |
1674 | ||
1675 | if (! *name || | |
1676 | *name == '.' || | |
1677 | IS_DIRECTORY_SEP (*name)) | |
1678 | { | |
1679 | *str++ = '.'; | |
1680 | dots--; | |
1681 | } | |
1682 | else | |
1683 | { | |
1684 | *str++ = '_'; | |
1685 | left--; | |
1686 | dots = 0; | |
1687 | } | |
1688 | } | |
1689 | else if ( !extn ) | |
1690 | { | |
1691 | *str++ = '.'; | |
1692 | extn = 1; /* we've got an extension */ | |
1693 | left = 3; /* 3 chars in extension */ | |
1694 | } | |
1695 | else | |
1696 | { | |
1697 | /* any embedded dots after the first are converted to _ */ | |
1698 | *str++ = '_'; | |
1699 | } | |
1700 | break; | |
1701 | case '~': | |
1702 | case '#': /* don't lose these, they're important */ | |
1703 | if ( ! left ) | |
1704 | str[-1] = c; /* replace last character of part */ | |
1705 | /* FALLTHRU */ | |
1706 | default: | |
1707 | if ( left ) | |
1708 | { | |
1709 | *str++ = tolower (c); /* map to lower case (looks nicer) */ | |
1710 | left--; | |
1711 | dots = 0; /* started a path component */ | |
1712 | } | |
1713 | break; | |
1714 | } | |
1715 | } | |
1716 | *str = '\0'; | |
fc85cb29 RS |
1717 | } |
1718 | else | |
1719 | { | |
1720 | strcpy (shortname, name); | |
1721 | unixtodos_filename (shortname); | |
95ed0025 | 1722 | } |
480b0c5b GV |
1723 | |
1724 | if (pPath) | |
76b3903d | 1725 | *pPath = shortname + (path - save_name); |
480b0c5b | 1726 | |
fc85cb29 | 1727 | return shortname; |
480b0c5b GV |
1728 | } |
1729 | ||
b3308d2e KH |
1730 | static int |
1731 | is_exec (const char * name) | |
1732 | { | |
1733 | char * p = strrchr (name, '.'); | |
1734 | return | |
1735 | (p != NULL | |
1736 | && (stricmp (p, ".exe") == 0 || | |
1737 | stricmp (p, ".com") == 0 || | |
1738 | stricmp (p, ".bat") == 0 || | |
1739 | stricmp (p, ".cmd") == 0)); | |
1740 | } | |
1741 | ||
177c0ea7 | 1742 | /* Emulate the Unix directory procedures opendir, closedir, |
76b3903d GV |
1743 | and readdir. We can't use the procedures supplied in sysdep.c, |
1744 | so we provide them here. */ | |
1745 | ||
1746 | struct direct dir_static; /* simulated directory contents */ | |
1747 | static HANDLE dir_find_handle = INVALID_HANDLE_VALUE; | |
1748 | static int dir_is_fat; | |
1749 | static char dir_pathname[MAXPATHLEN+1]; | |
1750 | static WIN32_FIND_DATA dir_find_data; | |
1751 | ||
9d3355d1 GV |
1752 | /* Support shares on a network resource as subdirectories of a read-only |
1753 | root directory. */ | |
1754 | static HANDLE wnet_enum_handle = INVALID_HANDLE_VALUE; | |
e0c181dd | 1755 | HANDLE open_unc_volume (const char *); |
9d3355d1 GV |
1756 | char *read_unc_volume (HANDLE, char *, int); |
1757 | void close_unc_volume (HANDLE); | |
1758 | ||
76b3903d GV |
1759 | DIR * |
1760 | opendir (char *filename) | |
1761 | { | |
1762 | DIR *dirp; | |
1763 | ||
1764 | /* Opening is done by FindFirstFile. However, a read is inherent to | |
1765 | this operation, so we defer the open until read time. */ | |
1766 | ||
76b3903d GV |
1767 | if (dir_find_handle != INVALID_HANDLE_VALUE) |
1768 | return NULL; | |
9d3355d1 GV |
1769 | if (wnet_enum_handle != INVALID_HANDLE_VALUE) |
1770 | return NULL; | |
1771 | ||
1772 | if (is_unc_volume (filename)) | |
1773 | { | |
1774 | wnet_enum_handle = open_unc_volume (filename); | |
1775 | if (wnet_enum_handle == INVALID_HANDLE_VALUE) | |
1776 | return NULL; | |
1777 | } | |
1778 | ||
1779 | if (!(dirp = (DIR *) malloc (sizeof (DIR)))) | |
1780 | return NULL; | |
76b3903d GV |
1781 | |
1782 | dirp->dd_fd = 0; | |
1783 | dirp->dd_loc = 0; | |
1784 | dirp->dd_size = 0; | |
1785 | ||
1786 | strncpy (dir_pathname, map_w32_filename (filename, NULL), MAXPATHLEN); | |
1787 | dir_pathname[MAXPATHLEN] = '\0'; | |
1788 | dir_is_fat = is_fat_volume (filename, NULL); | |
1789 | ||
1790 | return dirp; | |
1791 | } | |
1792 | ||
1793 | void | |
1794 | closedir (DIR *dirp) | |
1795 | { | |
1796 | /* If we have a find-handle open, close it. */ | |
1797 | if (dir_find_handle != INVALID_HANDLE_VALUE) | |
1798 | { | |
1799 | FindClose (dir_find_handle); | |
1800 | dir_find_handle = INVALID_HANDLE_VALUE; | |
1801 | } | |
9d3355d1 GV |
1802 | else if (wnet_enum_handle != INVALID_HANDLE_VALUE) |
1803 | { | |
1804 | close_unc_volume (wnet_enum_handle); | |
1805 | wnet_enum_handle = INVALID_HANDLE_VALUE; | |
1806 | } | |
76b3903d GV |
1807 | xfree ((char *) dirp); |
1808 | } | |
1809 | ||
1810 | struct direct * | |
1811 | readdir (DIR *dirp) | |
1812 | { | |
9d3355d1 GV |
1813 | if (wnet_enum_handle != INVALID_HANDLE_VALUE) |
1814 | { | |
177c0ea7 JB |
1815 | if (!read_unc_volume (wnet_enum_handle, |
1816 | dir_find_data.cFileName, | |
9d3355d1 GV |
1817 | MAX_PATH)) |
1818 | return NULL; | |
1819 | } | |
76b3903d | 1820 | /* If we aren't dir_finding, do a find-first, otherwise do a find-next. */ |
9d3355d1 | 1821 | else if (dir_find_handle == INVALID_HANDLE_VALUE) |
76b3903d GV |
1822 | { |
1823 | char filename[MAXNAMLEN + 3]; | |
1824 | int ln; | |
1825 | ||
1826 | strcpy (filename, dir_pathname); | |
1827 | ln = strlen (filename) - 1; | |
1828 | if (!IS_DIRECTORY_SEP (filename[ln])) | |
1829 | strcat (filename, "\\"); | |
1830 | strcat (filename, "*"); | |
1831 | ||
1832 | dir_find_handle = FindFirstFile (filename, &dir_find_data); | |
1833 | ||
1834 | if (dir_find_handle == INVALID_HANDLE_VALUE) | |
1835 | return NULL; | |
1836 | } | |
1837 | else | |
1838 | { | |
1839 | if (!FindNextFile (dir_find_handle, &dir_find_data)) | |
1840 | return NULL; | |
1841 | } | |
177c0ea7 | 1842 | |
76b3903d GV |
1843 | /* Emacs never uses this value, so don't bother making it match |
1844 | value returned by stat(). */ | |
1845 | dir_static.d_ino = 1; | |
177c0ea7 | 1846 | |
76b3903d GV |
1847 | dir_static.d_reclen = sizeof (struct direct) - MAXNAMLEN + 3 + |
1848 | dir_static.d_namlen - dir_static.d_namlen % 4; | |
177c0ea7 | 1849 | |
76b3903d GV |
1850 | dir_static.d_namlen = strlen (dir_find_data.cFileName); |
1851 | strcpy (dir_static.d_name, dir_find_data.cFileName); | |
1852 | if (dir_is_fat) | |
1853 | _strlwr (dir_static.d_name); | |
1854 | else if (!NILP (Vw32_downcase_file_names)) | |
1855 | { | |
1856 | register char *p; | |
1857 | for (p = dir_static.d_name; *p; p++) | |
1858 | if (*p >= 'a' && *p <= 'z') | |
1859 | break; | |
1860 | if (!*p) | |
1861 | _strlwr (dir_static.d_name); | |
1862 | } | |
177c0ea7 | 1863 | |
76b3903d GV |
1864 | return &dir_static; |
1865 | } | |
1866 | ||
9d3355d1 | 1867 | HANDLE |
e0c181dd | 1868 | open_unc_volume (const char *path) |
9d3355d1 | 1869 | { |
177c0ea7 | 1870 | NETRESOURCE nr; |
9d3355d1 GV |
1871 | HANDLE henum; |
1872 | int result; | |
1873 | ||
177c0ea7 JB |
1874 | nr.dwScope = RESOURCE_GLOBALNET; |
1875 | nr.dwType = RESOURCETYPE_DISK; | |
1876 | nr.dwDisplayType = RESOURCEDISPLAYTYPE_SERVER; | |
1877 | nr.dwUsage = RESOURCEUSAGE_CONTAINER; | |
1878 | nr.lpLocalName = NULL; | |
6e602566 | 1879 | nr.lpRemoteName = (LPSTR)map_w32_filename (path, NULL); |
177c0ea7 JB |
1880 | nr.lpComment = NULL; |
1881 | nr.lpProvider = NULL; | |
9d3355d1 | 1882 | |
177c0ea7 | 1883 | result = WNetOpenEnum(RESOURCE_GLOBALNET, RESOURCETYPE_DISK, |
9d3355d1 GV |
1884 | RESOURCEUSAGE_CONNECTABLE, &nr, &henum); |
1885 | ||
1886 | if (result == NO_ERROR) | |
1887 | return henum; | |
1888 | else | |
1889 | return INVALID_HANDLE_VALUE; | |
1890 | } | |
1891 | ||
1892 | char * | |
1893 | read_unc_volume (HANDLE henum, char *readbuf, int size) | |
1894 | { | |
a302c7ae | 1895 | DWORD count; |
9d3355d1 | 1896 | int result; |
a302c7ae | 1897 | DWORD bufsize = 512; |
9d3355d1 GV |
1898 | char *buffer; |
1899 | char *ptr; | |
1900 | ||
1901 | count = 1; | |
1902 | buffer = alloca (bufsize); | |
1903 | result = WNetEnumResource (wnet_enum_handle, &count, buffer, &bufsize); | |
1904 | if (result != NO_ERROR) | |
1905 | return NULL; | |
1906 | ||
1907 | /* WNetEnumResource returns \\resource\share...skip forward to "share". */ | |
1908 | ptr = ((LPNETRESOURCE) buffer)->lpRemoteName; | |
1909 | ptr += 2; | |
1910 | while (*ptr && !IS_DIRECTORY_SEP (*ptr)) ptr++; | |
1911 | ptr++; | |
1912 | ||
1913 | strncpy (readbuf, ptr, size); | |
1914 | return readbuf; | |
1915 | } | |
1916 | ||
1917 | void | |
1918 | close_unc_volume (HANDLE henum) | |
1919 | { | |
1920 | if (henum != INVALID_HANDLE_VALUE) | |
1921 | WNetCloseEnum (henum); | |
1922 | } | |
1923 | ||
1924 | DWORD | |
e0c181dd | 1925 | unc_volume_file_attributes (const char *path) |
9d3355d1 GV |
1926 | { |
1927 | HANDLE henum; | |
1928 | DWORD attrs; | |
1929 | ||
1930 | henum = open_unc_volume (path); | |
1931 | if (henum == INVALID_HANDLE_VALUE) | |
1932 | return -1; | |
1933 | ||
1934 | attrs = FILE_ATTRIBUTE_READONLY | FILE_ATTRIBUTE_DIRECTORY; | |
1935 | ||
1936 | close_unc_volume (henum); | |
1937 | ||
1938 | return attrs; | |
1939 | } | |
1940 | ||
302d7d54 JR |
1941 | /* Ensure a network connection is authenticated. */ |
1942 | static void | |
1943 | logon_network_drive (const char *path) | |
1944 | { | |
1945 | NETRESOURCE resource; | |
1946 | char share[MAX_PATH]; | |
1947 | int i, n_slashes; | |
1948 | ||
1949 | /* Only logon to networked drives. */ | |
1950 | if (!IS_DIRECTORY_SEP (path[0]) || !IS_DIRECTORY_SEP (path[1])) | |
1951 | return; | |
1952 | n_slashes = 2; | |
1953 | strncpy (share, path, MAX_PATH); | |
1954 | /* Truncate to just server and share name. */ | |
1955 | for (i = 2; i < MAX_PATH; i++) | |
1956 | { | |
1957 | if (IS_DIRECTORY_SEP (share[i]) && ++n_slashes > 3) | |
1958 | { | |
1959 | share[i] = '\0'; | |
1960 | break; | |
1961 | } | |
1962 | } | |
1963 | ||
1964 | resource.dwType = RESOURCETYPE_DISK; | |
1965 | resource.lpLocalName = NULL; | |
1966 | resource.lpRemoteName = share; | |
1967 | resource.lpProvider = NULL; | |
1968 | ||
1969 | WNetAddConnection2 (&resource, NULL, NULL, CONNECT_INTERACTIVE); | |
1970 | } | |
480b0c5b GV |
1971 | |
1972 | /* Shadow some MSVC runtime functions to map requests for long filenames | |
1973 | to reasonable short names if necessary. This was originally added to | |
177c0ea7 | 1974 | permit running Emacs on NT 3.1 on a FAT partition, which doesn't support |
480b0c5b GV |
1975 | long file names. */ |
1976 | ||
1977 | int | |
1978 | sys_access (const char * path, int mode) | |
1979 | { | |
b3308d2e KH |
1980 | DWORD attributes; |
1981 | ||
1982 | /* MSVC implementation doesn't recognize D_OK. */ | |
1983 | path = map_w32_filename (path, NULL); | |
9d3355d1 GV |
1984 | if (is_unc_volume (path)) |
1985 | { | |
1986 | attributes = unc_volume_file_attributes (path); | |
1987 | if (attributes == -1) { | |
1988 | errno = EACCES; | |
1989 | return -1; | |
1990 | } | |
1991 | } | |
1992 | else if ((attributes = GetFileAttributes (path)) == -1) | |
b3308d2e KH |
1993 | { |
1994 | /* Should try mapping GetLastError to errno; for now just indicate | |
1995 | that path doesn't exist. */ | |
1996 | errno = EACCES; | |
1997 | return -1; | |
1998 | } | |
1999 | if ((mode & X_OK) != 0 && !is_exec (path)) | |
2000 | { | |
2001 | errno = EACCES; | |
2002 | return -1; | |
2003 | } | |
2004 | if ((mode & W_OK) != 0 && (attributes & FILE_ATTRIBUTE_READONLY) != 0) | |
2005 | { | |
2006 | errno = EACCES; | |
2007 | return -1; | |
2008 | } | |
2009 | if ((mode & D_OK) != 0 && (attributes & FILE_ATTRIBUTE_DIRECTORY) == 0) | |
2010 | { | |
2011 | errno = EACCES; | |
2012 | return -1; | |
2013 | } | |
2014 | return 0; | |
480b0c5b GV |
2015 | } |
2016 | ||
2017 | int | |
2018 | sys_chdir (const char * path) | |
2019 | { | |
fbd6baed | 2020 | return _chdir (map_w32_filename (path, NULL)); |
480b0c5b GV |
2021 | } |
2022 | ||
2023 | int | |
2024 | sys_chmod (const char * path, int mode) | |
2025 | { | |
fbd6baed | 2026 | return _chmod (map_w32_filename (path, NULL), mode); |
480b0c5b GV |
2027 | } |
2028 | ||
2d5ab4bf EZ |
2029 | int |
2030 | sys_chown (const char *path, uid_t owner, gid_t group) | |
2031 | { | |
2032 | if (sys_chmod (path, _S_IREAD) == -1) /* check if file exists */ | |
2033 | return -1; | |
2034 | return 0; | |
2035 | } | |
2036 | ||
480b0c5b GV |
2037 | int |
2038 | sys_creat (const char * path, int mode) | |
2039 | { | |
fbd6baed | 2040 | return _creat (map_w32_filename (path, NULL), mode); |
480b0c5b GV |
2041 | } |
2042 | ||
2043 | FILE * | |
2044 | sys_fopen(const char * path, const char * mode) | |
2045 | { | |
2046 | int fd; | |
2047 | int oflag; | |
2048 | const char * mode_save = mode; | |
2049 | ||
2050 | /* Force all file handles to be non-inheritable. This is necessary to | |
2051 | ensure child processes don't unwittingly inherit handles that might | |
2052 | prevent future file access. */ | |
2053 | ||
2054 | if (mode[0] == 'r') | |
2055 | oflag = O_RDONLY; | |
2056 | else if (mode[0] == 'w' || mode[0] == 'a') | |
2057 | oflag = O_WRONLY | O_CREAT | O_TRUNC; | |
95ed0025 | 2058 | else |
480b0c5b GV |
2059 | return NULL; |
2060 | ||
2061 | /* Only do simplistic option parsing. */ | |
2062 | while (*++mode) | |
2063 | if (mode[0] == '+') | |
2064 | { | |
2065 | oflag &= ~(O_RDONLY | O_WRONLY); | |
2066 | oflag |= O_RDWR; | |
2067 | } | |
2068 | else if (mode[0] == 'b') | |
2069 | { | |
2070 | oflag &= ~O_TEXT; | |
2071 | oflag |= O_BINARY; | |
2072 | } | |
2073 | else if (mode[0] == 't') | |
2074 | { | |
2075 | oflag &= ~O_BINARY; | |
2076 | oflag |= O_TEXT; | |
2077 | } | |
2078 | else break; | |
2079 | ||
fbd6baed | 2080 | fd = _open (map_w32_filename (path, NULL), oflag | _O_NOINHERIT, 0644); |
480b0c5b GV |
2081 | if (fd < 0) |
2082 | return NULL; | |
2083 | ||
76b3903d | 2084 | return _fdopen (fd, mode_save); |
95ed0025 | 2085 | } |
480b0c5b | 2086 | |
76b3903d | 2087 | /* This only works on NTFS volumes, but is useful to have. */ |
480b0c5b | 2088 | int |
76b3903d | 2089 | sys_link (const char * old, const char * new) |
480b0c5b | 2090 | { |
76b3903d GV |
2091 | HANDLE fileh; |
2092 | int result = -1; | |
2093 | char oldname[MAX_PATH], newname[MAX_PATH]; | |
2094 | ||
2095 | if (old == NULL || new == NULL) | |
2096 | { | |
2097 | errno = ENOENT; | |
2098 | return -1; | |
2099 | } | |
2100 | ||
2101 | strcpy (oldname, map_w32_filename (old, NULL)); | |
2102 | strcpy (newname, map_w32_filename (new, NULL)); | |
2103 | ||
2104 | fileh = CreateFile (oldname, 0, 0, NULL, OPEN_EXISTING, | |
2105 | FILE_FLAG_BACKUP_SEMANTICS, NULL); | |
2106 | if (fileh != INVALID_HANDLE_VALUE) | |
2107 | { | |
2108 | int wlen; | |
2109 | ||
2110 | /* Confusingly, the "alternate" stream name field does not apply | |
2111 | when restoring a hard link, and instead contains the actual | |
2112 | stream data for the link (ie. the name of the link to create). | |
2113 | The WIN32_STREAM_ID structure before the cStreamName field is | |
2114 | the stream header, which is then immediately followed by the | |
2115 | stream data. */ | |
2116 | ||
2117 | struct { | |
2118 | WIN32_STREAM_ID wid; | |
2119 | WCHAR wbuffer[MAX_PATH]; /* extra space for link name */ | |
2120 | } data; | |
2121 | ||
2122 | wlen = MultiByteToWideChar (CP_ACP, MB_PRECOMPOSED, newname, -1, | |
2123 | data.wid.cStreamName, MAX_PATH); | |
2124 | if (wlen > 0) | |
2125 | { | |
2126 | LPVOID context = NULL; | |
2127 | DWORD wbytes = 0; | |
2128 | ||
2129 | data.wid.dwStreamId = BACKUP_LINK; | |
2130 | data.wid.dwStreamAttributes = 0; | |
2131 | data.wid.Size.LowPart = wlen * sizeof(WCHAR); | |
2132 | data.wid.Size.HighPart = 0; | |
2133 | data.wid.dwStreamNameSize = 0; | |
2134 | ||
2135 | if (BackupWrite (fileh, (LPBYTE)&data, | |
2136 | offsetof (WIN32_STREAM_ID, cStreamName) | |
2137 | + data.wid.Size.LowPart, | |
2138 | &wbytes, FALSE, FALSE, &context) | |
2139 | && BackupWrite (fileh, NULL, 0, &wbytes, TRUE, FALSE, &context)) | |
2140 | { | |
2141 | /* succeeded */ | |
2142 | result = 0; | |
2143 | } | |
2144 | else | |
2145 | { | |
2146 | /* Should try mapping GetLastError to errno; for now just | |
2147 | indicate a general error (eg. links not supported). */ | |
2148 | errno = EINVAL; // perhaps EMLINK? | |
2149 | } | |
2150 | } | |
2151 | ||
2152 | CloseHandle (fileh); | |
2153 | } | |
2154 | else | |
2155 | errno = ENOENT; | |
2156 | ||
2157 | return result; | |
480b0c5b GV |
2158 | } |
2159 | ||
2160 | int | |
2161 | sys_mkdir (const char * path) | |
2162 | { | |
fbd6baed | 2163 | return _mkdir (map_w32_filename (path, NULL)); |
480b0c5b GV |
2164 | } |
2165 | ||
9d1778b1 RS |
2166 | /* Because of long name mapping issues, we need to implement this |
2167 | ourselves. Also, MSVC's _mktemp returns NULL when it can't generate | |
2168 | a unique name, instead of setting the input template to an empty | |
2169 | string. | |
2170 | ||
2171 | Standard algorithm seems to be use pid or tid with a letter on the | |
2172 | front (in place of the 6 X's) and cycle through the letters to find a | |
2173 | unique name. We extend that to allow any reasonable character as the | |
2174 | first of the 6 X's. */ | |
480b0c5b GV |
2175 | char * |
2176 | sys_mktemp (char * template) | |
2177 | { | |
9d1778b1 RS |
2178 | char * p; |
2179 | int i; | |
2180 | unsigned uid = GetCurrentThreadId (); | |
2181 | static char first_char[] = "abcdefghijklmnopqrstuvwyz0123456789!%-_@#"; | |
2182 | ||
2183 | if (template == NULL) | |
2184 | return NULL; | |
2185 | p = template + strlen (template); | |
2186 | i = 5; | |
2187 | /* replace up to the last 5 X's with uid in decimal */ | |
2188 | while (--p >= template && p[0] == 'X' && --i >= 0) | |
2189 | { | |
2190 | p[0] = '0' + uid % 10; | |
2191 | uid /= 10; | |
2192 | } | |
2193 | ||
2194 | if (i < 0 && p[0] == 'X') | |
2195 | { | |
2196 | i = 0; | |
2197 | do | |
2198 | { | |
2199 | int save_errno = errno; | |
2200 | p[0] = first_char[i]; | |
2201 | if (sys_access (template, 0) < 0) | |
2202 | { | |
2203 | errno = save_errno; | |
2204 | return template; | |
2205 | } | |
2206 | } | |
2207 | while (++i < sizeof (first_char)); | |
2208 | } | |
2209 | ||
2210 | /* Template is badly formed or else we can't generate a unique name, | |
2211 | so return empty string */ | |
2212 | template[0] = 0; | |
2213 | return template; | |
480b0c5b GV |
2214 | } |
2215 | ||
2216 | int | |
2217 | sys_open (const char * path, int oflag, int mode) | |
2218 | { | |
302f0b29 GM |
2219 | const char* mpath = map_w32_filename (path, NULL); |
2220 | /* Try to open file without _O_CREAT, to be able to write to hidden | |
2221 | and system files. Force all file handles to be | |
2222 | non-inheritable. */ | |
2223 | int res = _open (mpath, (oflag & ~_O_CREAT) | _O_NOINHERIT, mode); | |
2224 | if (res >= 0) | |
2225 | return res; | |
2226 | return _open (mpath, oflag | _O_NOINHERIT, mode); | |
480b0c5b GV |
2227 | } |
2228 | ||
2229 | int | |
2230 | sys_rename (const char * oldname, const char * newname) | |
2231 | { | |
cfb5e855 | 2232 | BOOL result; |
b3308d2e | 2233 | char temp[MAX_PATH]; |
480b0c5b | 2234 | |
e9e23e23 | 2235 | /* MoveFile on Windows 95 doesn't correctly change the short file name |
5162ffce MB |
2236 | alias in a number of circumstances (it is not easy to predict when |
2237 | just by looking at oldname and newname, unfortunately). In these | |
2238 | cases, renaming through a temporary name avoids the problem. | |
2239 | ||
e9e23e23 | 2240 | A second problem on Windows 95 is that renaming through a temp name when |
5162ffce MB |
2241 | newname is uppercase fails (the final long name ends up in |
2242 | lowercase, although the short alias might be uppercase) UNLESS the | |
2243 | long temp name is not 8.3. | |
2244 | ||
e9e23e23 | 2245 | So, on Windows 95 we always rename through a temp name, and we make sure |
5162ffce | 2246 | the temp name has a long extension to ensure correct renaming. */ |
480b0c5b | 2247 | |
fbd6baed | 2248 | strcpy (temp, map_w32_filename (oldname, NULL)); |
480b0c5b | 2249 | |
76b3903d | 2250 | if (os_subtype == OS_WIN95) |
480b0c5b | 2251 | { |
b3308d2e | 2252 | char * o; |
480b0c5b | 2253 | char * p; |
b3308d2e KH |
2254 | int i = 0; |
2255 | ||
2256 | oldname = map_w32_filename (oldname, NULL); | |
2257 | if (o = strrchr (oldname, '\\')) | |
2258 | o++; | |
2259 | else | |
2260 | o = (char *) oldname; | |
480b0c5b | 2261 | |
480b0c5b GV |
2262 | if (p = strrchr (temp, '\\')) |
2263 | p++; | |
2264 | else | |
2265 | p = temp; | |
b3308d2e KH |
2266 | |
2267 | do | |
2268 | { | |
2269 | /* Force temp name to require a manufactured 8.3 alias - this | |
2270 | seems to make the second rename work properly. */ | |
f313ee82 | 2271 | sprintf (p, "_.%s.%u", o, i); |
b3308d2e | 2272 | i++; |
58f0cb7e | 2273 | result = rename (oldname, temp); |
b3308d2e KH |
2274 | } |
2275 | /* This loop must surely terminate! */ | |
cfb5e855 | 2276 | while (result < 0 && errno == EEXIST); |
58f0cb7e | 2277 | if (result < 0) |
480b0c5b GV |
2278 | return -1; |
2279 | } | |
2280 | ||
2281 | /* Emulate Unix behaviour - newname is deleted if it already exists | |
5162ffce | 2282 | (at least if it is a file; don't do this for directories). |
76b3903d | 2283 | |
b3308d2e KH |
2284 | Since we mustn't do this if we are just changing the case of the |
2285 | file name (we would end up deleting the file we are trying to | |
2286 | rename!), we let rename detect if the destination file already | |
2287 | exists - that way we avoid the possible pitfalls of trying to | |
2288 | determine ourselves whether two names really refer to the same | |
2289 | file, which is not always possible in the general case. (Consider | |
2290 | all the permutations of shared or subst'd drives, etc.) */ | |
2291 | ||
2292 | newname = map_w32_filename (newname, NULL); | |
eb9ea53f | 2293 | result = rename (temp, newname); |
b3308d2e KH |
2294 | |
2295 | if (result < 0 | |
cfb5e855 | 2296 | && errno == EEXIST |
b3308d2e KH |
2297 | && _chmod (newname, 0666) == 0 |
2298 | && _unlink (newname) == 0) | |
2299 | result = rename (temp, newname); | |
480b0c5b | 2300 | |
eb9ea53f | 2301 | return result; |
480b0c5b GV |
2302 | } |
2303 | ||
2304 | int | |
2305 | sys_rmdir (const char * path) | |
2306 | { | |
fbd6baed | 2307 | return _rmdir (map_w32_filename (path, NULL)); |
480b0c5b GV |
2308 | } |
2309 | ||
2310 | int | |
2311 | sys_unlink (const char * path) | |
2312 | { | |
16bb7578 GV |
2313 | path = map_w32_filename (path, NULL); |
2314 | ||
2315 | /* On Unix, unlink works without write permission. */ | |
2316 | _chmod (path, 0666); | |
2317 | return _unlink (path); | |
480b0c5b GV |
2318 | } |
2319 | ||
2320 | static FILETIME utc_base_ft; | |
2321 | static long double utc_base; | |
2322 | static int init = 0; | |
2323 | ||
2324 | static time_t | |
2325 | convert_time (FILETIME ft) | |
2326 | { | |
2327 | long double ret; | |
2328 | ||
2329 | if (!init) | |
2330 | { | |
2331 | /* Determine the delta between 1-Jan-1601 and 1-Jan-1970. */ | |
2332 | SYSTEMTIME st; | |
2333 | ||
2334 | st.wYear = 1970; | |
2335 | st.wMonth = 1; | |
2336 | st.wDay = 1; | |
2337 | st.wHour = 0; | |
2338 | st.wMinute = 0; | |
2339 | st.wSecond = 0; | |
2340 | st.wMilliseconds = 0; | |
2341 | ||
2342 | SystemTimeToFileTime (&st, &utc_base_ft); | |
2343 | utc_base = (long double) utc_base_ft.dwHighDateTime | |
69b72317 | 2344 | * 4096.0L * 1024.0L * 1024.0L + utc_base_ft.dwLowDateTime; |
480b0c5b GV |
2345 | init = 1; |
2346 | } | |
2347 | ||
2348 | if (CompareFileTime (&ft, &utc_base_ft) < 0) | |
2349 | return 0; | |
2350 | ||
69b72317 EZ |
2351 | ret = (long double) ft.dwHighDateTime |
2352 | * 4096.0L * 1024.0L * 1024.0L + ft.dwLowDateTime; | |
480b0c5b | 2353 | ret -= utc_base; |
69b72317 | 2354 | return (time_t) (ret * 1e-7L); |
480b0c5b GV |
2355 | } |
2356 | ||
480b0c5b GV |
2357 | void |
2358 | convert_from_time_t (time_t time, FILETIME * pft) | |
2359 | { | |
2360 | long double tmp; | |
2361 | ||
2362 | if (!init) | |
2363 | { | |
2364 | /* Determine the delta between 1-Jan-1601 and 1-Jan-1970. */ | |
2365 | SYSTEMTIME st; | |
2366 | ||
2367 | st.wYear = 1970; | |
2368 | st.wMonth = 1; | |
2369 | st.wDay = 1; | |
2370 | st.wHour = 0; | |
2371 | st.wMinute = 0; | |
2372 | st.wSecond = 0; | |
2373 | st.wMilliseconds = 0; | |
2374 | ||
2375 | SystemTimeToFileTime (&st, &utc_base_ft); | |
2376 | utc_base = (long double) utc_base_ft.dwHighDateTime | |
2377 | * 4096 * 1024 * 1024 + utc_base_ft.dwLowDateTime; | |
2378 | init = 1; | |
2379 | } | |
2380 | ||
2381 | /* time in 100ns units since 1-Jan-1601 */ | |
2382 | tmp = (long double) time * 1e7 + utc_base; | |
2383 | pft->dwHighDateTime = (DWORD) (tmp / (4096.0 * 1024 * 1024)); | |
16bb7578 | 2384 | pft->dwLowDateTime = (DWORD) (tmp - (4096.0 * 1024 * 1024) * pft->dwHighDateTime); |
480b0c5b | 2385 | } |
480b0c5b | 2386 | |
76b3903d GV |
2387 | #if 0 |
2388 | /* No reason to keep this; faking inode values either by hashing or even | |
2389 | using the file index from GetInformationByHandle, is not perfect and | |
2390 | so by default Emacs doesn't use the inode values on Windows. | |
2391 | Instead, we now determine file-truename correctly (except for | |
2392 | possible drive aliasing etc). */ | |
2393 | ||
2394 | /* Modified version of "PJW" algorithm (see the "Dragon" compiler book). */ | |
480b0c5b | 2395 | static unsigned |
76b3903d | 2396 | hashval (const unsigned char * str) |
480b0c5b GV |
2397 | { |
2398 | unsigned h = 0; | |
480b0c5b GV |
2399 | while (*str) |
2400 | { | |
2401 | h = (h << 4) + *str++; | |
76b3903d | 2402 | h ^= (h >> 28); |
480b0c5b GV |
2403 | } |
2404 | return h; | |
2405 | } | |
2406 | ||
2407 | /* Return the hash value of the canonical pathname, excluding the | |
2408 | drive/UNC header, to get a hopefully unique inode number. */ | |
76b3903d | 2409 | static DWORD |
480b0c5b GV |
2410 | generate_inode_val (const char * name) |
2411 | { | |
2412 | char fullname[ MAX_PATH ]; | |
2413 | char * p; | |
2414 | unsigned hash; | |
2415 | ||
76b3903d GV |
2416 | /* Get the truly canonical filename, if it exists. (Note: this |
2417 | doesn't resolve aliasing due to subst commands, or recognise hard | |
2418 | links. */ | |
2419 | if (!w32_get_long_filename ((char *)name, fullname, MAX_PATH)) | |
2420 | abort (); | |
2421 | ||
2422 | parse_root (fullname, &p); | |
fbd6baed | 2423 | /* Normal W32 filesystems are still case insensitive. */ |
480b0c5b | 2424 | _strlwr (p); |
76b3903d | 2425 | return hashval (p); |
480b0c5b GV |
2426 | } |
2427 | ||
76b3903d GV |
2428 | #endif |
2429 | ||
480b0c5b GV |
2430 | /* MSVC stat function can't cope with UNC names and has other bugs, so |
2431 | replace it with our own. This also allows us to calculate consistent | |
2432 | inode values without hacks in the main Emacs code. */ | |
2433 | int | |
2434 | stat (const char * path, struct stat * buf) | |
2435 | { | |
eb9ea53f | 2436 | char *name, *r; |
480b0c5b GV |
2437 | WIN32_FIND_DATA wfd; |
2438 | HANDLE fh; | |
76b3903d | 2439 | DWORD fake_inode; |
480b0c5b GV |
2440 | int permission; |
2441 | int len; | |
2442 | int rootdir = FALSE; | |
2443 | ||
2444 | if (path == NULL || buf == NULL) | |
2445 | { | |
2446 | errno = EFAULT; | |
2447 | return -1; | |
2448 | } | |
2449 | ||
fbd6baed | 2450 | name = (char *) map_w32_filename (path, &path); |
22189f79 EZ |
2451 | /* Must be valid filename, no wild cards or other invalid |
2452 | characters. We use _mbspbrk to support multibyte strings that | |
2453 | might look to strpbrk as if they included literal *, ?, and other | |
2454 | characters mentioned below that are disallowed by Windows | |
2455 | filesystems. */ | |
2456 | if (_mbspbrk (name, "*?|<>\"")) | |
480b0c5b GV |
2457 | { |
2458 | errno = ENOENT; | |
2459 | return -1; | |
2460 | } | |
2461 | ||
eb9ea53f GV |
2462 | /* If name is "c:/.." or "/.." then stat "c:/" or "/". */ |
2463 | r = IS_DEVICE_SEP (name[1]) ? &name[2] : name; | |
2464 | if (IS_DIRECTORY_SEP (r[0]) && r[1] == '.' && r[2] == '.' && r[3] == '\0') | |
2465 | { | |
2466 | r[1] = r[2] = '\0'; | |
2467 | } | |
2468 | ||
480b0c5b GV |
2469 | /* Remove trailing directory separator, unless name is the root |
2470 | directory of a drive or UNC volume in which case ensure there | |
2471 | is a trailing separator. */ | |
2472 | len = strlen (name); | |
2473 | rootdir = (path >= name + len - 1 | |
2474 | && (IS_DIRECTORY_SEP (*path) || *path == 0)); | |
2475 | name = strcpy (alloca (len + 2), name); | |
2476 | ||
9d3355d1 GV |
2477 | if (is_unc_volume (name)) |
2478 | { | |
2479 | DWORD attrs = unc_volume_file_attributes (name); | |
2480 | ||
2481 | if (attrs == -1) | |
2482 | return -1; | |
2483 | ||
2484 | memset (&wfd, 0, sizeof (wfd)); | |
2485 | wfd.dwFileAttributes = attrs; | |
2486 | wfd.ftCreationTime = utc_base_ft; | |
2487 | wfd.ftLastAccessTime = utc_base_ft; | |
2488 | wfd.ftLastWriteTime = utc_base_ft; | |
2489 | strcpy (wfd.cFileName, name); | |
2490 | } | |
2491 | else if (rootdir) | |
480b0c5b GV |
2492 | { |
2493 | if (!IS_DIRECTORY_SEP (name[len-1])) | |
2494 | strcat (name, "\\"); | |
2495 | if (GetDriveType (name) < 2) | |
2496 | { | |
2497 | errno = ENOENT; | |
2498 | return -1; | |
2499 | } | |
2500 | memset (&wfd, 0, sizeof (wfd)); | |
2501 | wfd.dwFileAttributes = FILE_ATTRIBUTE_DIRECTORY; | |
2502 | wfd.ftCreationTime = utc_base_ft; | |
2503 | wfd.ftLastAccessTime = utc_base_ft; | |
2504 | wfd.ftLastWriteTime = utc_base_ft; | |
2505 | strcpy (wfd.cFileName, name); | |
2506 | } | |
2507 | else | |
2508 | { | |
2509 | if (IS_DIRECTORY_SEP (name[len-1])) | |
2510 | name[len - 1] = 0; | |
76b3903d GV |
2511 | |
2512 | /* (This is hacky, but helps when doing file completions on | |
2513 | network drives.) Optimize by using information available from | |
2514 | active readdir if possible. */ | |
b19cc00c GV |
2515 | len = strlen (dir_pathname); |
2516 | if (IS_DIRECTORY_SEP (dir_pathname[len-1])) | |
2517 | len--; | |
76b3903d | 2518 | if (dir_find_handle != INVALID_HANDLE_VALUE |
b19cc00c | 2519 | && strnicmp (name, dir_pathname, len) == 0 |
76b3903d GV |
2520 | && IS_DIRECTORY_SEP (name[len]) |
2521 | && stricmp (name + len + 1, dir_static.d_name) == 0) | |
480b0c5b | 2522 | { |
76b3903d GV |
2523 | /* This was the last entry returned by readdir. */ |
2524 | wfd = dir_find_data; | |
2525 | } | |
2526 | else | |
2527 | { | |
302d7d54 JR |
2528 | if (IS_DIRECTORY_SEP (name[0]) && IS_DIRECTORY_SEP (name[1])) |
2529 | logon_network_drive (name); | |
2530 | ||
76b3903d GV |
2531 | fh = FindFirstFile (name, &wfd); |
2532 | if (fh == INVALID_HANDLE_VALUE) | |
2533 | { | |
2534 | errno = ENOENT; | |
2535 | return -1; | |
2536 | } | |
2537 | FindClose (fh); | |
480b0c5b | 2538 | } |
480b0c5b GV |
2539 | } |
2540 | ||
93e0f0da JR |
2541 | if (!NILP (Vw32_get_true_file_attributes) |
2542 | /* No access rights required to get info. */ | |
2543 | && (fh = CreateFile (name, 0, 0, NULL, OPEN_EXISTING, | |
2544 | FILE_FLAG_BACKUP_SEMANTICS, NULL)) | |
2545 | != INVALID_HANDLE_VALUE) | |
480b0c5b | 2546 | { |
480b0c5b | 2547 | /* This is more accurate in terms of gettting the correct number |
aa5ee2a3 | 2548 | of links, but is quite slow (it is noticeable when Emacs is |
480b0c5b GV |
2549 | making a list of file name completions). */ |
2550 | BY_HANDLE_FILE_INFORMATION info; | |
2551 | ||
480b0c5b GV |
2552 | if (GetFileInformationByHandle (fh, &info)) |
2553 | { | |
480b0c5b | 2554 | buf->st_nlink = info.nNumberOfLinks; |
76b3903d GV |
2555 | /* Might as well use file index to fake inode values, but this |
2556 | is not guaranteed to be unique unless we keep a handle open | |
2557 | all the time (even then there are situations where it is | |
2558 | not unique). Reputedly, there are at most 48 bits of info | |
2559 | (on NTFS, presumably less on FAT). */ | |
2560 | fake_inode = info.nFileIndexLow ^ info.nFileIndexHigh; | |
480b0c5b GV |
2561 | } |
2562 | else | |
2563 | { | |
01f31dfb AI |
2564 | buf->st_nlink = 1; |
2565 | fake_inode = 0; | |
2566 | } | |
2567 | ||
93e0f0da | 2568 | if (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) |
01f31dfb | 2569 | { |
93e0f0da JR |
2570 | buf->st_mode = _S_IFDIR; |
2571 | } | |
2572 | else | |
2573 | { | |
2574 | switch (GetFileType (fh)) | |
2575 | { | |
2576 | case FILE_TYPE_DISK: | |
2577 | buf->st_mode = _S_IFREG; | |
2578 | break; | |
2579 | case FILE_TYPE_PIPE: | |
2580 | buf->st_mode = _S_IFIFO; | |
2581 | break; | |
2582 | case FILE_TYPE_CHAR: | |
2583 | case FILE_TYPE_UNKNOWN: | |
2584 | default: | |
2585 | buf->st_mode = _S_IFCHR; | |
2586 | } | |
480b0c5b | 2587 | } |
01f31dfb | 2588 | CloseHandle (fh); |
76b3903d GV |
2589 | } |
2590 | else | |
2591 | { | |
2592 | /* Don't bother to make this information more accurate. */ | |
93e0f0da | 2593 | buf->st_mode = (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) ? |
bc5fdfc7 | 2594 | _S_IFDIR : _S_IFREG; |
480b0c5b | 2595 | buf->st_nlink = 1; |
76b3903d GV |
2596 | fake_inode = 0; |
2597 | } | |
2598 | ||
2599 | #if 0 | |
2600 | /* Not sure if there is any point in this. */ | |
2601 | if (!NILP (Vw32_generate_fake_inodes)) | |
2602 | fake_inode = generate_inode_val (name); | |
2603 | else if (fake_inode == 0) | |
2604 | { | |
2605 | /* For want of something better, try to make everything unique. */ | |
2606 | static DWORD gen_num = 0; | |
2607 | fake_inode = ++gen_num; | |
480b0c5b | 2608 | } |
76b3903d GV |
2609 | #endif |
2610 | ||
2611 | /* MSVC defines _ino_t to be short; other libc's might not. */ | |
2612 | if (sizeof (buf->st_ino) == 2) | |
2613 | buf->st_ino = fake_inode ^ (fake_inode >> 16); | |
2614 | else | |
2615 | buf->st_ino = fake_inode; | |
480b0c5b GV |
2616 | |
2617 | /* consider files to belong to current user */ | |
2618 | buf->st_uid = the_passwd.pw_uid; | |
2619 | buf->st_gid = the_passwd.pw_gid; | |
2620 | ||
fbd6baed | 2621 | /* volume_info is set indirectly by map_w32_filename */ |
480b0c5b GV |
2622 | buf->st_dev = volume_info.serialnum; |
2623 | buf->st_rdev = volume_info.serialnum; | |
2624 | ||
480b0c5b GV |
2625 | |
2626 | buf->st_size = wfd.nFileSizeLow; | |
2627 | ||
2628 | /* Convert timestamps to Unix format. */ | |
2629 | buf->st_mtime = convert_time (wfd.ftLastWriteTime); | |
2630 | buf->st_atime = convert_time (wfd.ftLastAccessTime); | |
2631 | if (buf->st_atime == 0) buf->st_atime = buf->st_mtime; | |
2632 | buf->st_ctime = convert_time (wfd.ftCreationTime); | |
2633 | if (buf->st_ctime == 0) buf->st_ctime = buf->st_mtime; | |
2634 | ||
2635 | /* determine rwx permissions */ | |
2636 | if (wfd.dwFileAttributes & FILE_ATTRIBUTE_READONLY) | |
2637 | permission = _S_IREAD; | |
2638 | else | |
2639 | permission = _S_IREAD | _S_IWRITE; | |
177c0ea7 | 2640 | |
480b0c5b GV |
2641 | if (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) |
2642 | permission |= _S_IEXEC; | |
b3308d2e KH |
2643 | else if (is_exec (name)) |
2644 | permission |= _S_IEXEC; | |
480b0c5b GV |
2645 | |
2646 | buf->st_mode |= permission | (permission >> 3) | (permission >> 6); | |
2647 | ||
2648 | return 0; | |
2649 | } | |
2650 | ||
16bb7578 GV |
2651 | /* Provide fstat and utime as well as stat for consistent handling of |
2652 | file timestamps. */ | |
2653 | int | |
2654 | fstat (int desc, struct stat * buf) | |
2655 | { | |
2656 | HANDLE fh = (HANDLE) _get_osfhandle (desc); | |
2657 | BY_HANDLE_FILE_INFORMATION info; | |
2658 | DWORD fake_inode; | |
2659 | int permission; | |
2660 | ||
2661 | switch (GetFileType (fh) & ~FILE_TYPE_REMOTE) | |
2662 | { | |
2663 | case FILE_TYPE_DISK: | |
2664 | buf->st_mode = _S_IFREG; | |
2665 | if (!GetFileInformationByHandle (fh, &info)) | |
2666 | { | |
2667 | errno = EACCES; | |
2668 | return -1; | |
2669 | } | |
2670 | break; | |
2671 | case FILE_TYPE_PIPE: | |
2672 | buf->st_mode = _S_IFIFO; | |
2673 | goto non_disk; | |
2674 | case FILE_TYPE_CHAR: | |
2675 | case FILE_TYPE_UNKNOWN: | |
2676 | default: | |
2677 | buf->st_mode = _S_IFCHR; | |
2678 | non_disk: | |
2679 | memset (&info, 0, sizeof (info)); | |
2680 | info.dwFileAttributes = 0; | |
2681 | info.ftCreationTime = utc_base_ft; | |
2682 | info.ftLastAccessTime = utc_base_ft; | |
2683 | info.ftLastWriteTime = utc_base_ft; | |
2684 | } | |
2685 | ||
2686 | if (info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) | |
16bb7578 | 2687 | buf->st_mode = _S_IFDIR; |
93e0f0da JR |
2688 | |
2689 | buf->st_nlink = info.nNumberOfLinks; | |
2690 | /* Might as well use file index to fake inode values, but this | |
2691 | is not guaranteed to be unique unless we keep a handle open | |
2692 | all the time (even then there are situations where it is | |
2693 | not unique). Reputedly, there are at most 48 bits of info | |
2694 | (on NTFS, presumably less on FAT). */ | |
2695 | fake_inode = info.nFileIndexLow ^ info.nFileIndexHigh; | |
16bb7578 GV |
2696 | |
2697 | /* MSVC defines _ino_t to be short; other libc's might not. */ | |
2698 | if (sizeof (buf->st_ino) == 2) | |
2699 | buf->st_ino = fake_inode ^ (fake_inode >> 16); | |
2700 | else | |
2701 | buf->st_ino = fake_inode; | |
2702 | ||
2703 | /* consider files to belong to current user */ | |
2704 | buf->st_uid = 0; | |
2705 | buf->st_gid = 0; | |
2706 | ||
2707 | buf->st_dev = info.dwVolumeSerialNumber; | |
2708 | buf->st_rdev = info.dwVolumeSerialNumber; | |
2709 | ||
2710 | buf->st_size = info.nFileSizeLow; | |
2711 | ||
2712 | /* Convert timestamps to Unix format. */ | |
2713 | buf->st_mtime = convert_time (info.ftLastWriteTime); | |
2714 | buf->st_atime = convert_time (info.ftLastAccessTime); | |
2715 | if (buf->st_atime == 0) buf->st_atime = buf->st_mtime; | |
2716 | buf->st_ctime = convert_time (info.ftCreationTime); | |
2717 | if (buf->st_ctime == 0) buf->st_ctime = buf->st_mtime; | |
2718 | ||
2719 | /* determine rwx permissions */ | |
2720 | if (info.dwFileAttributes & FILE_ATTRIBUTE_READONLY) | |
2721 | permission = _S_IREAD; | |
2722 | else | |
2723 | permission = _S_IREAD | _S_IWRITE; | |
177c0ea7 | 2724 | |
16bb7578 GV |
2725 | if (info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) |
2726 | permission |= _S_IEXEC; | |
2727 | else | |
2728 | { | |
2729 | #if 0 /* no way of knowing the filename */ | |
2730 | char * p = strrchr (name, '.'); | |
2731 | if (p != NULL && | |
2732 | (stricmp (p, ".exe") == 0 || | |
2733 | stricmp (p, ".com") == 0 || | |
2734 | stricmp (p, ".bat") == 0 || | |
2735 | stricmp (p, ".cmd") == 0)) | |
2736 | permission |= _S_IEXEC; | |
2737 | #endif | |
2738 | } | |
2739 | ||
2740 | buf->st_mode |= permission | (permission >> 3) | (permission >> 6); | |
2741 | ||
2742 | return 0; | |
2743 | } | |
2744 | ||
2745 | int | |
2746 | utime (const char *name, struct utimbuf *times) | |
2747 | { | |
2748 | struct utimbuf deftime; | |
2749 | HANDLE fh; | |
2750 | FILETIME mtime; | |
2751 | FILETIME atime; | |
2752 | ||
2753 | if (times == NULL) | |
2754 | { | |
2755 | deftime.modtime = deftime.actime = time (NULL); | |
2756 | times = &deftime; | |
2757 | } | |
2758 | ||
2759 | /* Need write access to set times. */ | |
2760 | fh = CreateFile (name, GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, | |
2761 | 0, OPEN_EXISTING, 0, NULL); | |
2762 | if (fh) | |
2763 | { | |
2764 | convert_from_time_t (times->actime, &atime); | |
2765 | convert_from_time_t (times->modtime, &mtime); | |
2766 | if (!SetFileTime (fh, NULL, &atime, &mtime)) | |
2767 | { | |
2768 | CloseHandle (fh); | |
2769 | errno = EACCES; | |
2770 | return -1; | |
2771 | } | |
2772 | CloseHandle (fh); | |
2773 | } | |
2774 | else | |
2775 | { | |
2776 | errno = EINVAL; | |
2777 | return -1; | |
2778 | } | |
2779 | return 0; | |
2780 | } | |
2781 | ||
480b0c5b GV |
2782 | #ifdef HAVE_SOCKETS |
2783 | ||
2784 | /* Wrappers for winsock functions to map between our file descriptors | |
2785 | and winsock's handles; also set h_errno for convenience. | |
2786 | ||
2787 | To allow Emacs to run on systems which don't have winsock support | |
2788 | installed, we dynamically link to winsock on startup if present, and | |
2789 | otherwise provide the minimum necessary functionality | |
2790 | (eg. gethostname). */ | |
2791 | ||
2792 | /* function pointers for relevant socket functions */ | |
2793 | int (PASCAL *pfn_WSAStartup) (WORD wVersionRequired, LPWSADATA lpWSAData); | |
2794 | void (PASCAL *pfn_WSASetLastError) (int iError); | |
2795 | int (PASCAL *pfn_WSAGetLastError) (void); | |
26fb7bc4 | 2796 | int (PASCAL *pfn_WSAEventSelect) (SOCKET s, HANDLE hEventObject, long lNetworkEvents); |
64570b36 KS |
2797 | HANDLE (PASCAL *pfn_WSACreateEvent) (void); |
2798 | int (PASCAL *pfn_WSACloseEvent) (HANDLE hEvent); | |
480b0c5b GV |
2799 | int (PASCAL *pfn_socket) (int af, int type, int protocol); |
2800 | int (PASCAL *pfn_bind) (SOCKET s, const struct sockaddr *addr, int namelen); | |
2801 | int (PASCAL *pfn_connect) (SOCKET s, const struct sockaddr *addr, int namelen); | |
2802 | int (PASCAL *pfn_ioctlsocket) (SOCKET s, long cmd, u_long *argp); | |
2803 | int (PASCAL *pfn_recv) (SOCKET s, char * buf, int len, int flags); | |
2804 | int (PASCAL *pfn_send) (SOCKET s, const char * buf, int len, int flags); | |
2805 | int (PASCAL *pfn_closesocket) (SOCKET s); | |
2806 | int (PASCAL *pfn_shutdown) (SOCKET s, int how); | |
2807 | int (PASCAL *pfn_WSACleanup) (void); | |
2808 | ||
2809 | u_short (PASCAL *pfn_htons) (u_short hostshort); | |
2810 | u_short (PASCAL *pfn_ntohs) (u_short netshort); | |
2811 | unsigned long (PASCAL *pfn_inet_addr) (const char * cp); | |
2812 | int (PASCAL *pfn_gethostname) (char * name, int namelen); | |
2813 | struct hostent * (PASCAL *pfn_gethostbyname) (const char * name); | |
2814 | struct servent * (PASCAL *pfn_getservbyname) (const char * name, const char * proto); | |
ecd270eb | 2815 | int (PASCAL *pfn_getpeername) (SOCKET s, struct sockaddr *addr, int * namelen); |
962955c5 JR |
2816 | int (PASCAL *pfn_setsockopt) (SOCKET s, int level, int optname, |
2817 | const char * optval, int optlen); | |
2818 | int (PASCAL *pfn_listen) (SOCKET s, int backlog); | |
2819 | int (PASCAL *pfn_getsockname) (SOCKET s, struct sockaddr * name, | |
2820 | int * namelen); | |
2821 | SOCKET (PASCAL *pfn_accept) (SOCKET s, struct sockaddr * addr, int * addrlen); | |
2822 | int (PASCAL *pfn_recvfrom) (SOCKET s, char * buf, int len, int flags, | |
2823 | struct sockaddr * from, int * fromlen); | |
2824 | int (PASCAL *pfn_sendto) (SOCKET s, const char * buf, int len, int flags, | |
2825 | const struct sockaddr * to, int tolen); | |
2826 | ||
f1614061 RS |
2827 | /* SetHandleInformation is only needed to make sockets non-inheritable. */ |
2828 | BOOL (WINAPI *pfn_SetHandleInformation) (HANDLE object, DWORD mask, DWORD flags); | |
2829 | #ifndef HANDLE_FLAG_INHERIT | |
2830 | #define HANDLE_FLAG_INHERIT 1 | |
2831 | #endif | |
480b0c5b | 2832 | |
f249a012 RS |
2833 | HANDLE winsock_lib; |
2834 | static int winsock_inuse; | |
480b0c5b | 2835 | |
f249a012 | 2836 | BOOL |
480b0c5b GV |
2837 | term_winsock (void) |
2838 | { | |
f249a012 | 2839 | if (winsock_lib != NULL && winsock_inuse == 0) |
480b0c5b | 2840 | { |
f249a012 RS |
2841 | /* Not sure what would cause WSAENETDOWN, or even if it can happen |
2842 | after WSAStartup returns successfully, but it seems reasonable | |
2843 | to allow unloading winsock anyway in that case. */ | |
2844 | if (pfn_WSACleanup () == 0 || | |
2845 | pfn_WSAGetLastError () == WSAENETDOWN) | |
2846 | { | |
2847 | if (FreeLibrary (winsock_lib)) | |
2848 | winsock_lib = NULL; | |
2849 | return TRUE; | |
2850 | } | |
480b0c5b | 2851 | } |
f249a012 | 2852 | return FALSE; |
480b0c5b GV |
2853 | } |
2854 | ||
f249a012 RS |
2855 | BOOL |
2856 | init_winsock (int load_now) | |
480b0c5b GV |
2857 | { |
2858 | WSADATA winsockData; | |
2859 | ||
f249a012 RS |
2860 | if (winsock_lib != NULL) |
2861 | return TRUE; | |
f1614061 RS |
2862 | |
2863 | pfn_SetHandleInformation = NULL; | |
2864 | pfn_SetHandleInformation | |
2865 | = (void *) GetProcAddress (GetModuleHandle ("kernel32.dll"), | |
2866 | "SetHandleInformation"); | |
2867 | ||
64570b36 | 2868 | winsock_lib = LoadLibrary ("Ws2_32.dll"); |
480b0c5b GV |
2869 | |
2870 | if (winsock_lib != NULL) | |
2871 | { | |
2872 | /* dynamically link to socket functions */ | |
2873 | ||
2874 | #define LOAD_PROC(fn) \ | |
2875 | if ((pfn_##fn = (void *) GetProcAddress (winsock_lib, #fn)) == NULL) \ | |
2876 | goto fail; | |
2877 | ||
2878 | LOAD_PROC( WSAStartup ); | |
2879 | LOAD_PROC( WSASetLastError ); | |
2880 | LOAD_PROC( WSAGetLastError ); | |
26fb7bc4 | 2881 | LOAD_PROC( WSAEventSelect ); |
64570b36 KS |
2882 | LOAD_PROC( WSACreateEvent ); |
2883 | LOAD_PROC( WSACloseEvent ); | |
480b0c5b GV |
2884 | LOAD_PROC( socket ); |
2885 | LOAD_PROC( bind ); | |
2886 | LOAD_PROC( connect ); | |
2887 | LOAD_PROC( ioctlsocket ); | |
2888 | LOAD_PROC( recv ); | |
2889 | LOAD_PROC( send ); | |
2890 | LOAD_PROC( closesocket ); | |
2891 | LOAD_PROC( shutdown ); | |
2892 | LOAD_PROC( htons ); | |
2893 | LOAD_PROC( ntohs ); | |
2894 | LOAD_PROC( inet_addr ); | |
2895 | LOAD_PROC( gethostname ); | |
2896 | LOAD_PROC( gethostbyname ); | |
2897 | LOAD_PROC( getservbyname ); | |
ecd270eb | 2898 | LOAD_PROC( getpeername ); |
480b0c5b | 2899 | LOAD_PROC( WSACleanup ); |
962955c5 JR |
2900 | LOAD_PROC( setsockopt ); |
2901 | LOAD_PROC( listen ); | |
2902 | LOAD_PROC( getsockname ); | |
2903 | LOAD_PROC( accept ); | |
2904 | LOAD_PROC( recvfrom ); | |
2905 | LOAD_PROC( sendto ); | |
f249a012 RS |
2906 | #undef LOAD_PROC |
2907 | ||
480b0c5b GV |
2908 | /* specify version 1.1 of winsock */ |
2909 | if (pfn_WSAStartup (0x101, &winsockData) == 0) | |
2910 | { | |
f249a012 RS |
2911 | if (winsockData.wVersion != 0x101) |
2912 | goto fail; | |
2913 | ||
2914 | if (!load_now) | |
2915 | { | |
2916 | /* Report that winsock exists and is usable, but leave | |
2917 | socket functions disabled. I am assuming that calling | |
2918 | WSAStartup does not require any network interaction, | |
2919 | and in particular does not cause or require a dial-up | |
2920 | connection to be established. */ | |
2921 | ||
2922 | pfn_WSACleanup (); | |
2923 | FreeLibrary (winsock_lib); | |
2924 | winsock_lib = NULL; | |
2925 | } | |
2926 | winsock_inuse = 0; | |
2927 | return TRUE; | |
480b0c5b GV |
2928 | } |
2929 | ||
2930 | fail: | |
2931 | FreeLibrary (winsock_lib); | |
f249a012 | 2932 | winsock_lib = NULL; |
480b0c5b | 2933 | } |
f249a012 RS |
2934 | |
2935 | return FALSE; | |
480b0c5b GV |
2936 | } |
2937 | ||
2938 | ||
2939 | int h_errno = 0; | |
2940 | ||
2941 | /* function to set h_errno for compatability; map winsock error codes to | |
2942 | normal system codes where they overlap (non-overlapping definitions | |
2943 | are already in <sys/socket.h> */ | |
9bfb11f9 KS |
2944 | static void |
2945 | set_errno () | |
480b0c5b | 2946 | { |
f249a012 | 2947 | if (winsock_lib == NULL) |
480b0c5b GV |
2948 | h_errno = EINVAL; |
2949 | else | |
2950 | h_errno = pfn_WSAGetLastError (); | |
2951 | ||
2952 | switch (h_errno) | |
2953 | { | |
2954 | case WSAEACCES: h_errno = EACCES; break; | |
2955 | case WSAEBADF: h_errno = EBADF; break; | |
2956 | case WSAEFAULT: h_errno = EFAULT; break; | |
2957 | case WSAEINTR: h_errno = EINTR; break; | |
2958 | case WSAEINVAL: h_errno = EINVAL; break; | |
2959 | case WSAEMFILE: h_errno = EMFILE; break; | |
2960 | case WSAENAMETOOLONG: h_errno = ENAMETOOLONG; break; | |
2961 | case WSAENOTEMPTY: h_errno = ENOTEMPTY; break; | |
2962 | } | |
2963 | errno = h_errno; | |
2964 | } | |
2965 | ||
9bfb11f9 KS |
2966 | static void |
2967 | check_errno () | |
480b0c5b | 2968 | { |
f249a012 | 2969 | if (h_errno == 0 && winsock_lib != NULL) |
480b0c5b GV |
2970 | pfn_WSASetLastError (0); |
2971 | } | |
2972 | ||
d8fcc1b9 AI |
2973 | /* Extend strerror to handle the winsock-specific error codes. */ |
2974 | struct { | |
2975 | int errnum; | |
2976 | char * msg; | |
2977 | } _wsa_errlist[] = { | |
2978 | WSAEINTR , "Interrupted function call", | |
2979 | WSAEBADF , "Bad file descriptor", | |
2980 | WSAEACCES , "Permission denied", | |
2981 | WSAEFAULT , "Bad address", | |
2982 | WSAEINVAL , "Invalid argument", | |
2983 | WSAEMFILE , "Too many open files", | |
177c0ea7 | 2984 | |
d8fcc1b9 AI |
2985 | WSAEWOULDBLOCK , "Resource temporarily unavailable", |
2986 | WSAEINPROGRESS , "Operation now in progress", | |
2987 | WSAEALREADY , "Operation already in progress", | |
2988 | WSAENOTSOCK , "Socket operation on non-socket", | |
2989 | WSAEDESTADDRREQ , "Destination address required", | |
2990 | WSAEMSGSIZE , "Message too long", | |
2991 | WSAEPROTOTYPE , "Protocol wrong type for socket", | |
2992 | WSAENOPROTOOPT , "Bad protocol option", | |
2993 | WSAEPROTONOSUPPORT , "Protocol not supported", | |
2994 | WSAESOCKTNOSUPPORT , "Socket type not supported", | |
2995 | WSAEOPNOTSUPP , "Operation not supported", | |
2996 | WSAEPFNOSUPPORT , "Protocol family not supported", | |
2997 | WSAEAFNOSUPPORT , "Address family not supported by protocol family", | |
2998 | WSAEADDRINUSE , "Address already in use", | |
2999 | WSAEADDRNOTAVAIL , "Cannot assign requested address", | |
3000 | WSAENETDOWN , "Network is down", | |
3001 | WSAENETUNREACH , "Network is unreachable", | |
3002 | WSAENETRESET , "Network dropped connection on reset", | |
3003 | WSAECONNABORTED , "Software caused connection abort", | |
3004 | WSAECONNRESET , "Connection reset by peer", | |
3005 | WSAENOBUFS , "No buffer space available", | |
3006 | WSAEISCONN , "Socket is already connected", | |
3007 | WSAENOTCONN , "Socket is not connected", | |
3008 | WSAESHUTDOWN , "Cannot send after socket shutdown", | |
3009 | WSAETOOMANYREFS , "Too many references", /* not sure */ | |
3010 | WSAETIMEDOUT , "Connection timed out", | |
3011 | WSAECONNREFUSED , "Connection refused", | |
3012 | WSAELOOP , "Network loop", /* not sure */ | |
3013 | WSAENAMETOOLONG , "Name is too long", | |
3014 | WSAEHOSTDOWN , "Host is down", | |
3015 | WSAEHOSTUNREACH , "No route to host", | |
3016 | WSAENOTEMPTY , "Buffer not empty", /* not sure */ | |
3017 | WSAEPROCLIM , "Too many processes", | |
3018 | WSAEUSERS , "Too many users", /* not sure */ | |
3019 | WSAEDQUOT , "Double quote in host name", /* really not sure */ | |
3020 | WSAESTALE , "Data is stale", /* not sure */ | |
3021 | WSAEREMOTE , "Remote error", /* not sure */ | |
177c0ea7 | 3022 | |
d8fcc1b9 AI |
3023 | WSASYSNOTREADY , "Network subsystem is unavailable", |
3024 | WSAVERNOTSUPPORTED , "WINSOCK.DLL version out of range", | |
3025 | WSANOTINITIALISED , "Winsock not initialized successfully", | |
3026 | WSAEDISCON , "Graceful shutdown in progress", | |
3027 | #ifdef WSAENOMORE | |
3028 | WSAENOMORE , "No more operations allowed", /* not sure */ | |
3029 | WSAECANCELLED , "Operation cancelled", /* not sure */ | |
3030 | WSAEINVALIDPROCTABLE , "Invalid procedure table from service provider", | |
3031 | WSAEINVALIDPROVIDER , "Invalid service provider version number", | |
3032 | WSAEPROVIDERFAILEDINIT , "Unable to initialize a service provider", | |
aa5ee2a3 | 3033 | WSASYSCALLFAILURE , "System call failure", |
d8fcc1b9 AI |
3034 | WSASERVICE_NOT_FOUND , "Service not found", /* not sure */ |
3035 | WSATYPE_NOT_FOUND , "Class type not found", | |
3036 | WSA_E_NO_MORE , "No more resources available", /* really not sure */ | |
3037 | WSA_E_CANCELLED , "Operation already cancelled", /* really not sure */ | |
3038 | WSAEREFUSED , "Operation refused", /* not sure */ | |
3039 | #endif | |
177c0ea7 | 3040 | |
d8fcc1b9 AI |
3041 | WSAHOST_NOT_FOUND , "Host not found", |
3042 | WSATRY_AGAIN , "Authoritative host not found during name lookup", | |
3043 | WSANO_RECOVERY , "Non-recoverable error during name lookup", | |
3044 | WSANO_DATA , "Valid name, no data record of requested type", | |
3045 | ||
3046 | -1, NULL | |
3047 | }; | |
3048 | ||
3049 | char * | |
3050 | sys_strerror(int error_no) | |
3051 | { | |
3052 | int i; | |
3053 | static char unknown_msg[40]; | |
3054 | ||
a302c7ae AI |
3055 | if (error_no >= 0 && error_no < sys_nerr) |
3056 | return sys_errlist[error_no]; | |
d8fcc1b9 AI |
3057 | |
3058 | for (i = 0; _wsa_errlist[i].errnum >= 0; i++) | |
3059 | if (_wsa_errlist[i].errnum == error_no) | |
3060 | return _wsa_errlist[i].msg; | |
3061 | ||
3062 | sprintf(unknown_msg, "Unidentified error: %d", error_no); | |
3063 | return unknown_msg; | |
3064 | } | |
3065 | ||
480b0c5b GV |
3066 | /* [andrewi 3-May-96] I've had conflicting results using both methods, |
3067 | but I believe the method of keeping the socket handle separate (and | |
3068 | insuring it is not inheritable) is the correct one. */ | |
3069 | ||
3070 | //#define SOCK_REPLACE_HANDLE | |
3071 | ||
3072 | #ifdef SOCK_REPLACE_HANDLE | |
3073 | #define SOCK_HANDLE(fd) ((SOCKET) _get_osfhandle (fd)) | |
3074 | #else | |
3075 | #define SOCK_HANDLE(fd) ((SOCKET) fd_info[fd].hnd) | |
3076 | #endif | |
3077 | ||
962955c5 JR |
3078 | int socket_to_fd (SOCKET s); |
3079 | ||
480b0c5b GV |
3080 | int |
3081 | sys_socket(int af, int type, int protocol) | |
3082 | { | |
962955c5 | 3083 | SOCKET s; |
480b0c5b | 3084 | |
f249a012 | 3085 | if (winsock_lib == NULL) |
480b0c5b GV |
3086 | { |
3087 | h_errno = ENETDOWN; | |
3088 | return INVALID_SOCKET; | |
3089 | } | |
3090 | ||
3091 | check_errno (); | |
3092 | ||
3093 | /* call the real socket function */ | |
962955c5 | 3094 | s = pfn_socket (af, type, protocol); |
177c0ea7 | 3095 | |
480b0c5b | 3096 | if (s != INVALID_SOCKET) |
962955c5 | 3097 | return socket_to_fd (s); |
480b0c5b | 3098 | |
962955c5 JR |
3099 | set_errno (); |
3100 | return -1; | |
3101 | } | |
3102 | ||
3103 | /* Convert a SOCKET to a file descriptor. */ | |
3104 | int | |
3105 | socket_to_fd (SOCKET s) | |
3106 | { | |
3107 | int fd; | |
3108 | child_process * cp; | |
3109 | ||
3110 | /* Although under NT 3.5 _open_osfhandle will accept a socket | |
3111 | handle, if opened with SO_OPENTYPE == SO_SYNCHRONOUS_NONALERT, | |
3112 | that does not work under NT 3.1. However, we can get the same | |
3113 | effect by using a backdoor function to replace an existing | |
3114 | descriptor handle with the one we want. */ | |
3115 | ||
3116 | /* allocate a file descriptor (with appropriate flags) */ | |
3117 | fd = _open ("NUL:", _O_RDWR); | |
3118 | if (fd >= 0) | |
3119 | { | |
480b0c5b | 3120 | #ifdef SOCK_REPLACE_HANDLE |
962955c5 JR |
3121 | /* now replace handle to NUL with our socket handle */ |
3122 | CloseHandle ((HANDLE) _get_osfhandle (fd)); | |
3123 | _free_osfhnd (fd); | |
3124 | _set_osfhnd (fd, s); | |
3125 | /* setmode (fd, _O_BINARY); */ | |
480b0c5b | 3126 | #else |
962955c5 JR |
3127 | /* Make a non-inheritable copy of the socket handle. Note |
3128 | that it is possible that sockets aren't actually kernel | |
3129 | handles, which appears to be the case on Windows 9x when | |
3130 | the MS Proxy winsock client is installed. */ | |
3131 | { | |
3132 | /* Apparently there is a bug in NT 3.51 with some service | |
3133 | packs, which prevents using DuplicateHandle to make a | |
3134 | socket handle non-inheritable (causes WSACleanup to | |
3135 | hang). The work-around is to use SetHandleInformation | |
3136 | instead if it is available and implemented. */ | |
3137 | if (pfn_SetHandleInformation) | |
480b0c5b | 3138 | { |
962955c5 JR |
3139 | pfn_SetHandleInformation ((HANDLE) s, HANDLE_FLAG_INHERIT, 0); |
3140 | } | |
3141 | else | |
3142 | { | |
3143 | HANDLE parent = GetCurrentProcess (); | |
3144 | HANDLE new_s = INVALID_HANDLE_VALUE; | |
3145 | ||
3146 | if (DuplicateHandle (parent, | |
3147 | (HANDLE) s, | |
3148 | parent, | |
3149 | &new_s, | |
3150 | 0, | |
3151 | FALSE, | |
3152 | DUPLICATE_SAME_ACCESS)) | |
f1614061 | 3153 | { |
962955c5 JR |
3154 | /* It is possible that DuplicateHandle succeeds even |
3155 | though the socket wasn't really a kernel handle, | |
3156 | because a real handle has the same value. So | |
3157 | test whether the new handle really is a socket. */ | |
3158 | long nonblocking = 0; | |
3159 | if (pfn_ioctlsocket ((SOCKET) new_s, FIONBIO, &nonblocking) == 0) | |
ca149beb | 3160 | { |
962955c5 JR |
3161 | pfn_closesocket (s); |
3162 | s = (SOCKET) new_s; | |
3163 | } | |
3164 | else | |
3165 | { | |
3166 | CloseHandle (new_s); | |
3167 | } | |
177c0ea7 | 3168 | } |
480b0c5b | 3169 | } |
962955c5 JR |
3170 | } |
3171 | fd_info[fd].hnd = (HANDLE) s; | |
480b0c5b GV |
3172 | #endif |
3173 | ||
962955c5 JR |
3174 | /* set our own internal flags */ |
3175 | fd_info[fd].flags = FILE_SOCKET | FILE_BINARY | FILE_READ | FILE_WRITE; | |
480b0c5b | 3176 | |
962955c5 JR |
3177 | cp = new_child (); |
3178 | if (cp) | |
3179 | { | |
3180 | cp->fd = fd; | |
3181 | cp->status = STATUS_READ_ACKNOWLEDGED; | |
480b0c5b | 3182 | |
962955c5 JR |
3183 | /* attach child_process to fd_info */ |
3184 | if (fd_info[ fd ].cp != NULL) | |
3185 | { | |
3186 | DebPrint (("sys_socket: fd_info[%d] apparently in use!\n", fd)); | |
3187 | abort (); | |
480b0c5b GV |
3188 | } |
3189 | ||
962955c5 JR |
3190 | fd_info[ fd ].cp = cp; |
3191 | ||
3192 | /* success! */ | |
3193 | winsock_inuse++; /* count open sockets */ | |
3194 | return fd; | |
480b0c5b | 3195 | } |
480b0c5b | 3196 | |
962955c5 JR |
3197 | /* clean up */ |
3198 | _close (fd); | |
3199 | } | |
3200 | pfn_closesocket (s); | |
3201 | h_errno = EMFILE; | |
480b0c5b GV |
3202 | return -1; |
3203 | } | |
3204 | ||
3205 | ||
3206 | int | |
3207 | sys_bind (int s, const struct sockaddr * addr, int namelen) | |
3208 | { | |
f249a012 | 3209 | if (winsock_lib == NULL) |
480b0c5b GV |
3210 | { |
3211 | h_errno = ENOTSOCK; | |
3212 | return SOCKET_ERROR; | |
3213 | } | |
3214 | ||
3215 | check_errno (); | |
3216 | if (fd_info[s].flags & FILE_SOCKET) | |
3217 | { | |
3218 | int rc = pfn_bind (SOCK_HANDLE (s), addr, namelen); | |
3219 | if (rc == SOCKET_ERROR) | |
3220 | set_errno (); | |
3221 | return rc; | |
3222 | } | |
3223 | h_errno = ENOTSOCK; | |
3224 | return SOCKET_ERROR; | |
3225 | } | |
3226 | ||
3227 | ||
3228 | int | |
3229 | sys_connect (int s, const struct sockaddr * name, int namelen) | |
3230 | { | |
f249a012 | 3231 | if (winsock_lib == NULL) |
480b0c5b GV |
3232 | { |
3233 | h_errno = ENOTSOCK; | |
3234 | return SOCKET_ERROR; | |
3235 | } | |
3236 | ||
3237 | check_errno (); | |
3238 | if (fd_info[s].flags & FILE_SOCKET) | |
3239 | { | |
3240 | int rc = pfn_connect (SOCK_HANDLE (s), name, namelen); | |
3241 | if (rc == SOCKET_ERROR) | |
3242 | set_errno (); | |
3243 | return rc; | |
3244 | } | |
3245 | h_errno = ENOTSOCK; | |
3246 | return SOCKET_ERROR; | |
3247 | } | |
3248 | ||
3249 | u_short | |
3250 | sys_htons (u_short hostshort) | |
3251 | { | |
f249a012 | 3252 | return (winsock_lib != NULL) ? |
480b0c5b GV |
3253 | pfn_htons (hostshort) : hostshort; |
3254 | } | |
3255 | ||
3256 | u_short | |
3257 | sys_ntohs (u_short netshort) | |
3258 | { | |
f249a012 | 3259 | return (winsock_lib != NULL) ? |
480b0c5b GV |
3260 | pfn_ntohs (netshort) : netshort; |
3261 | } | |
3262 | ||
3263 | unsigned long | |
3264 | sys_inet_addr (const char * cp) | |
3265 | { | |
f249a012 | 3266 | return (winsock_lib != NULL) ? |
480b0c5b GV |
3267 | pfn_inet_addr (cp) : INADDR_NONE; |
3268 | } | |
3269 | ||
3270 | int | |
3271 | sys_gethostname (char * name, int namelen) | |
3272 | { | |
f249a012 | 3273 | if (winsock_lib != NULL) |
480b0c5b GV |
3274 | return pfn_gethostname (name, namelen); |
3275 | ||
3276 | if (namelen > MAX_COMPUTERNAME_LENGTH) | |
a302c7ae | 3277 | return !GetComputerName (name, (DWORD *)&namelen); |
480b0c5b GV |
3278 | |
3279 | h_errno = EFAULT; | |
3280 | return SOCKET_ERROR; | |
3281 | } | |
3282 | ||
3283 | struct hostent * | |
3284 | sys_gethostbyname(const char * name) | |
3285 | { | |
3286 | struct hostent * host; | |
3287 | ||
f249a012 | 3288 | if (winsock_lib == NULL) |
480b0c5b GV |
3289 | { |
3290 | h_errno = ENETDOWN; | |
3291 | return NULL; | |
3292 | } | |
3293 | ||
3294 | check_errno (); | |
3295 | host = pfn_gethostbyname (name); | |
3296 | if (!host) | |
3297 | set_errno (); | |
3298 | return host; | |
3299 | } | |
3300 | ||
3301 | struct servent * | |
3302 | sys_getservbyname(const char * name, const char * proto) | |
3303 | { | |
3304 | struct servent * serv; | |
3305 | ||
f249a012 | 3306 | if (winsock_lib == NULL) |
480b0c5b GV |
3307 | { |
3308 | h_errno = ENETDOWN; | |
3309 | return NULL; | |
3310 | } | |
3311 | ||
3312 | check_errno (); | |
3313 | serv = pfn_getservbyname (name, proto); | |
3314 | if (!serv) | |
3315 | set_errno (); | |
3316 | return serv; | |
3317 | } | |
3318 | ||
ecd270eb JR |
3319 | int |
3320 | sys_getpeername (int s, struct sockaddr *addr, int * namelen) | |
3321 | { | |
3322 | if (winsock_lib == NULL) | |
3323 | { | |
3324 | h_errno = ENETDOWN; | |
3325 | return SOCKET_ERROR; | |
3326 | } | |
3327 | ||
3328 | check_errno (); | |
3329 | if (fd_info[s].flags & FILE_SOCKET) | |
3330 | { | |
3331 | int rc = pfn_getpeername (SOCK_HANDLE (s), addr, namelen); | |
3332 | if (rc == SOCKET_ERROR) | |
3333 | set_errno (); | |
3334 | return rc; | |
3335 | } | |
3336 | h_errno = ENOTSOCK; | |
3337 | return SOCKET_ERROR; | |
3338 | } | |
3339 | ||
3340 | ||
380961a6 GV |
3341 | int |
3342 | sys_shutdown (int s, int how) | |
3343 | { | |
380961a6 GV |
3344 | if (winsock_lib == NULL) |
3345 | { | |
3346 | h_errno = ENETDOWN; | |
3347 | return SOCKET_ERROR; | |
3348 | } | |
3349 | ||
3350 | check_errno (); | |
3351 | if (fd_info[s].flags & FILE_SOCKET) | |
3352 | { | |
3353 | int rc = pfn_shutdown (SOCK_HANDLE (s), how); | |
962955c5 JR |
3354 | if (rc == SOCKET_ERROR) |
3355 | set_errno (); | |
3356 | return rc; | |
3357 | } | |
3358 | h_errno = ENOTSOCK; | |
3359 | return SOCKET_ERROR; | |
3360 | } | |
3361 | ||
3362 | int | |
a5a389bb | 3363 | sys_setsockopt (int s, int level, int optname, const void * optval, int optlen) |
962955c5 JR |
3364 | { |
3365 | if (winsock_lib == NULL) | |
3366 | { | |
3367 | h_errno = ENETDOWN; | |
3368 | return SOCKET_ERROR; | |
3369 | } | |
3370 | ||
3371 | check_errno (); | |
3372 | if (fd_info[s].flags & FILE_SOCKET) | |
3373 | { | |
3374 | int rc = pfn_setsockopt (SOCK_HANDLE (s), level, optname, | |
a5a389bb | 3375 | (const char *)optval, optlen); |
962955c5 JR |
3376 | if (rc == SOCKET_ERROR) |
3377 | set_errno (); | |
3378 | return rc; | |
3379 | } | |
3380 | h_errno = ENOTSOCK; | |
177c0ea7 | 3381 | return SOCKET_ERROR; |
962955c5 JR |
3382 | } |
3383 | ||
3384 | int | |
3385 | sys_listen (int s, int backlog) | |
3386 | { | |
3387 | if (winsock_lib == NULL) | |
3388 | { | |
3389 | h_errno = ENETDOWN; | |
3390 | return SOCKET_ERROR; | |
3391 | } | |
3392 | ||
3393 | check_errno (); | |
3394 | if (fd_info[s].flags & FILE_SOCKET) | |
3395 | { | |
3396 | int rc = pfn_listen (SOCK_HANDLE (s), backlog); | |
3397 | if (rc == SOCKET_ERROR) | |
3398 | set_errno (); | |
26fb7bc4 | 3399 | else |
64570b36 | 3400 | fd_info[s].flags |= FILE_LISTEN; |
962955c5 JR |
3401 | return rc; |
3402 | } | |
3403 | h_errno = ENOTSOCK; | |
177c0ea7 | 3404 | return SOCKET_ERROR; |
962955c5 JR |
3405 | } |
3406 | ||
3407 | int | |
3408 | sys_getsockname (int s, struct sockaddr * name, int * namelen) | |
3409 | { | |
3410 | if (winsock_lib == NULL) | |
3411 | { | |
3412 | h_errno = ENETDOWN; | |
3413 | return SOCKET_ERROR; | |
3414 | } | |
3415 | ||
3416 | check_errno (); | |
3417 | if (fd_info[s].flags & FILE_SOCKET) | |
3418 | { | |
3419 | int rc = pfn_getsockname (SOCK_HANDLE (s), name, namelen); | |
3420 | if (rc == SOCKET_ERROR) | |
3421 | set_errno (); | |
3422 | return rc; | |
3423 | } | |
3424 | h_errno = ENOTSOCK; | |
177c0ea7 | 3425 | return SOCKET_ERROR; |
962955c5 JR |
3426 | } |
3427 | ||
3428 | int | |
3429 | sys_accept (int s, struct sockaddr * addr, int * addrlen) | |
3430 | { | |
3431 | if (winsock_lib == NULL) | |
3432 | { | |
3433 | h_errno = ENETDOWN; | |
3434 | return -1; | |
3435 | } | |
3436 | ||
3437 | check_errno (); | |
26fb7bc4 | 3438 | if (fd_info[s].flags & FILE_LISTEN) |
962955c5 | 3439 | { |
a0ad1860 | 3440 | SOCKET t = pfn_accept (SOCK_HANDLE (s), addr, addrlen); |
64570b36 KS |
3441 | int fd = -1; |
3442 | if (t == INVALID_SOCKET) | |
3443 | set_errno (); | |
3444 | else | |
3445 | fd = socket_to_fd (t); | |
962955c5 | 3446 | |
64570b36 KS |
3447 | fd_info[s].cp->status = STATUS_READ_ACKNOWLEDGED; |
3448 | ResetEvent (fd_info[s].cp->char_avail); | |
3449 | return fd; | |
962955c5 JR |
3450 | } |
3451 | h_errno = ENOTSOCK; | |
3452 | return -1; | |
3453 | } | |
3454 | ||
3455 | int | |
3456 | sys_recvfrom (int s, char * buf, int len, int flags, | |
3457 | struct sockaddr * from, int * fromlen) | |
3458 | { | |
3459 | if (winsock_lib == NULL) | |
3460 | { | |
3461 | h_errno = ENETDOWN; | |
3462 | return SOCKET_ERROR; | |
3463 | } | |
3464 | ||
3465 | check_errno (); | |
3466 | if (fd_info[s].flags & FILE_SOCKET) | |
3467 | { | |
3468 | int rc = pfn_recvfrom (SOCK_HANDLE (s), buf, len, flags, from, fromlen); | |
3469 | if (rc == SOCKET_ERROR) | |
3470 | set_errno (); | |
3471 | return rc; | |
3472 | } | |
3473 | h_errno = ENOTSOCK; | |
3474 | return SOCKET_ERROR; | |
3475 | } | |
3476 | ||
3477 | int | |
3478 | sys_sendto (int s, const char * buf, int len, int flags, | |
3479 | const struct sockaddr * to, int tolen) | |
3480 | { | |
3481 | if (winsock_lib == NULL) | |
3482 | { | |
3483 | h_errno = ENETDOWN; | |
3484 | return SOCKET_ERROR; | |
3485 | } | |
3486 | ||
3487 | check_errno (); | |
3488 | if (fd_info[s].flags & FILE_SOCKET) | |
3489 | { | |
3490 | int rc = pfn_sendto (SOCK_HANDLE (s), buf, len, flags, to, tolen); | |
380961a6 GV |
3491 | if (rc == SOCKET_ERROR) |
3492 | set_errno (); | |
3493 | return rc; | |
3494 | } | |
3495 | h_errno = ENOTSOCK; | |
3496 | return SOCKET_ERROR; | |
3497 | } | |
3498 | ||
ecd270eb JR |
3499 | /* Windows does not have an fcntl function. Provide an implementation |
3500 | solely for making sockets non-blocking. */ | |
3501 | int | |
3502 | fcntl (int s, int cmd, int options) | |
3503 | { | |
3504 | if (winsock_lib == NULL) | |
3505 | { | |
3506 | h_errno = ENETDOWN; | |
3507 | return -1; | |
3508 | } | |
3509 | ||
3510 | check_errno (); | |
3511 | if (fd_info[s].flags & FILE_SOCKET) | |
3512 | { | |
3513 | if (cmd == F_SETFL && options == O_NDELAY) | |
3514 | { | |
3515 | unsigned long nblock = 1; | |
3516 | int rc = pfn_ioctlsocket (SOCK_HANDLE (s), FIONBIO, &nblock); | |
3517 | if (rc == SOCKET_ERROR) | |
3518 | set_errno(); | |
3519 | /* Keep track of the fact that we set this to non-blocking. */ | |
3520 | fd_info[s].flags |= FILE_NDELAY; | |
3521 | return rc; | |
3522 | } | |
3523 | else | |
3524 | { | |
3525 | h_errno = EINVAL; | |
3526 | return SOCKET_ERROR; | |
3527 | } | |
3528 | } | |
3529 | h_errno = ENOTSOCK; | |
3530 | return SOCKET_ERROR; | |
3531 | } | |
3532 | ||
480b0c5b GV |
3533 | #endif /* HAVE_SOCKETS */ |
3534 | ||
3535 | ||
3536 | /* Shadow main io functions: we need to handle pipes and sockets more | |
3537 | intelligently, and implement non-blocking mode as well. */ | |
3538 | ||
3539 | int | |
3540 | sys_close (int fd) | |
3541 | { | |
3542 | int rc; | |
3543 | ||
7559f399 | 3544 | if (fd < 0) |
480b0c5b GV |
3545 | { |
3546 | errno = EBADF; | |
3547 | return -1; | |
3548 | } | |
3549 | ||
7559f399 | 3550 | if (fd < MAXDESC && fd_info[fd].cp) |
480b0c5b GV |
3551 | { |
3552 | child_process * cp = fd_info[fd].cp; | |
3553 | ||
3554 | fd_info[fd].cp = NULL; | |
3555 | ||
3556 | if (CHILD_ACTIVE (cp)) | |
3557 | { | |
3558 | /* if last descriptor to active child_process then cleanup */ | |
3559 | int i; | |
3560 | for (i = 0; i < MAXDESC; i++) | |
3561 | { | |
3562 | if (i == fd) | |
3563 | continue; | |
3564 | if (fd_info[i].cp == cp) | |
3565 | break; | |
3566 | } | |
3567 | if (i == MAXDESC) | |
3568 | { | |
f249a012 | 3569 | #ifdef HAVE_SOCKETS |
480b0c5b GV |
3570 | if (fd_info[fd].flags & FILE_SOCKET) |
3571 | { | |
f249a012 RS |
3572 | #ifndef SOCK_REPLACE_HANDLE |
3573 | if (winsock_lib == NULL) abort (); | |
480b0c5b GV |
3574 | |
3575 | pfn_shutdown (SOCK_HANDLE (fd), 2); | |
3576 | rc = pfn_closesocket (SOCK_HANDLE (fd)); | |
f249a012 RS |
3577 | #endif |
3578 | winsock_inuse--; /* count open sockets */ | |
480b0c5b GV |
3579 | } |
3580 | #endif | |
3581 | delete_child (cp); | |
3582 | } | |
3583 | } | |
3584 | } | |
3585 | ||
3586 | /* Note that sockets do not need special treatment here (at least on | |
e9e23e23 | 3587 | NT and Windows 95 using the standard tcp/ip stacks) - it appears that |
480b0c5b GV |
3588 | closesocket is equivalent to CloseHandle, which is to be expected |
3589 | because socket handles are fully fledged kernel handles. */ | |
3590 | rc = _close (fd); | |
3591 | ||
7559f399 | 3592 | if (rc == 0 && fd < MAXDESC) |
480b0c5b GV |
3593 | fd_info[fd].flags = 0; |
3594 | ||
3595 | return rc; | |
3596 | } | |
3597 | ||
3598 | int | |
3599 | sys_dup (int fd) | |
3600 | { | |
3601 | int new_fd; | |
3602 | ||
3603 | new_fd = _dup (fd); | |
7559f399 | 3604 | if (new_fd >= 0 && new_fd < MAXDESC) |
480b0c5b GV |
3605 | { |
3606 | /* duplicate our internal info as well */ | |
3607 | fd_info[new_fd] = fd_info[fd]; | |
3608 | } | |
3609 | return new_fd; | |
3610 | } | |
3611 | ||
3612 | ||
3613 | int | |
3614 | sys_dup2 (int src, int dst) | |
3615 | { | |
3616 | int rc; | |
3617 | ||
3618 | if (dst < 0 || dst >= MAXDESC) | |
3619 | { | |
3620 | errno = EBADF; | |
3621 | return -1; | |
3622 | } | |
3623 | ||
3624 | /* make sure we close the destination first if it's a pipe or socket */ | |
3625 | if (src != dst && fd_info[dst].flags != 0) | |
3626 | sys_close (dst); | |
177c0ea7 | 3627 | |
480b0c5b GV |
3628 | rc = _dup2 (src, dst); |
3629 | if (rc == 0) | |
3630 | { | |
3631 | /* duplicate our internal info as well */ | |
3632 | fd_info[dst] = fd_info[src]; | |
3633 | } | |
3634 | return rc; | |
3635 | } | |
3636 | ||
480b0c5b GV |
3637 | /* Unix pipe() has only one arg */ |
3638 | int | |
3639 | sys_pipe (int * phandles) | |
3640 | { | |
3641 | int rc; | |
3642 | unsigned flags; | |
480b0c5b | 3643 | |
76b3903d GV |
3644 | /* make pipe handles non-inheritable; when we spawn a child, we |
3645 | replace the relevant handle with an inheritable one. Also put | |
3646 | pipes into binary mode; we will do text mode translation ourselves | |
3647 | if required. */ | |
3648 | rc = _pipe (phandles, 0, _O_NOINHERIT | _O_BINARY); | |
480b0c5b GV |
3649 | |
3650 | if (rc == 0) | |
3651 | { | |
cb72110d JR |
3652 | /* Protect against overflow, since Windows can open more handles than |
3653 | our fd_info array has room for. */ | |
3654 | if (phandles[0] >= MAXDESC || phandles[1] >= MAXDESC) | |
3655 | { | |
3656 | _close (phandles[0]); | |
3657 | _close (phandles[1]); | |
3658 | rc = -1; | |
3659 | } | |
3660 | else | |
3661 | { | |
3662 | flags = FILE_PIPE | FILE_READ | FILE_BINARY; | |
3663 | fd_info[phandles[0]].flags = flags; | |
480b0c5b | 3664 | |
cb72110d JR |
3665 | flags = FILE_PIPE | FILE_WRITE | FILE_BINARY; |
3666 | fd_info[phandles[1]].flags = flags; | |
3667 | } | |
480b0c5b GV |
3668 | } |
3669 | ||
3670 | return rc; | |
3671 | } | |
3672 | ||
f7554349 | 3673 | /* From ntproc.c */ |
78806724 | 3674 | extern int w32_pipe_read_delay; |
f7554349 | 3675 | |
480b0c5b GV |
3676 | /* Function to do blocking read of one byte, needed to implement |
3677 | select. It is only allowed on sockets and pipes. */ | |
3678 | int | |
3679 | _sys_read_ahead (int fd) | |
3680 | { | |
3681 | child_process * cp; | |
3682 | int rc; | |
3683 | ||
3684 | if (fd < 0 || fd >= MAXDESC) | |
3685 | return STATUS_READ_ERROR; | |
3686 | ||
3687 | cp = fd_info[fd].cp; | |
3688 | ||
3689 | if (cp == NULL || cp->fd != fd || cp->status != STATUS_READ_READY) | |
3690 | return STATUS_READ_ERROR; | |
3691 | ||
3692 | if ((fd_info[fd].flags & (FILE_PIPE | FILE_SOCKET)) == 0 | |
3693 | || (fd_info[fd].flags & FILE_READ) == 0) | |
3694 | { | |
3695 | DebPrint (("_sys_read_ahead: internal error: fd %d is not a pipe or socket!\n", fd)); | |
3696 | abort (); | |
3697 | } | |
177c0ea7 | 3698 | |
480b0c5b | 3699 | cp->status = STATUS_READ_IN_PROGRESS; |
177c0ea7 | 3700 | |
480b0c5b | 3701 | if (fd_info[fd].flags & FILE_PIPE) |
f7554349 | 3702 | { |
f7554349 KH |
3703 | rc = _read (fd, &cp->chr, sizeof (char)); |
3704 | ||
3705 | /* Give subprocess time to buffer some more output for us before | |
e9e23e23 | 3706 | reporting that input is available; we need this because Windows 95 |
f7554349 KH |
3707 | connects DOS programs to pipes by making the pipe appear to be |
3708 | the normal console stdout - as a result most DOS programs will | |
3709 | write to stdout without buffering, ie. one character at a | |
fbd6baed | 3710 | time. Even some W32 programs do this - "dir" in a command |
f7554349 KH |
3711 | shell on NT is very slow if we don't do this. */ |
3712 | if (rc > 0) | |
3713 | { | |
78806724 | 3714 | int wait = w32_pipe_read_delay; |
f7554349 KH |
3715 | |
3716 | if (wait > 0) | |
3717 | Sleep (wait); | |
3718 | else if (wait < 0) | |
3719 | while (++wait <= 0) | |
3720 | /* Yield remainder of our time slice, effectively giving a | |
3721 | temporary priority boost to the child process. */ | |
3722 | Sleep (0); | |
3723 | } | |
3724 | } | |
480b0c5b GV |
3725 | #ifdef HAVE_SOCKETS |
3726 | else if (fd_info[fd].flags & FILE_SOCKET) | |
ecd270eb JR |
3727 | { |
3728 | unsigned long nblock = 0; | |
3729 | /* We always want this to block, so temporarily disable NDELAY. */ | |
3730 | if (fd_info[fd].flags & FILE_NDELAY) | |
3731 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONBIO, &nblock); | |
3732 | ||
3733 | rc = pfn_recv (SOCK_HANDLE (fd), &cp->chr, sizeof (char), 0); | |
3734 | ||
3735 | if (fd_info[fd].flags & FILE_NDELAY) | |
3736 | { | |
3737 | nblock = 1; | |
3738 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONBIO, &nblock); | |
3739 | } | |
3740 | } | |
480b0c5b | 3741 | #endif |
177c0ea7 | 3742 | |
480b0c5b GV |
3743 | if (rc == sizeof (char)) |
3744 | cp->status = STATUS_READ_SUCCEEDED; | |
3745 | else | |
3746 | cp->status = STATUS_READ_FAILED; | |
3747 | ||
3748 | return cp->status; | |
3749 | } | |
3750 | ||
9bfb11f9 KS |
3751 | int |
3752 | _sys_wait_accept (int fd) | |
64570b36 KS |
3753 | { |
3754 | HANDLE hEv; | |
3755 | child_process * cp; | |
3756 | int rc; | |
3757 | ||
3758 | if (fd < 0 || fd >= MAXDESC) | |
3759 | return STATUS_READ_ERROR; | |
3760 | ||
3761 | cp = fd_info[fd].cp; | |
3762 | ||
3763 | if (cp == NULL || cp->fd != fd || cp->status != STATUS_READ_READY) | |
3764 | return STATUS_READ_ERROR; | |
3765 | ||
3766 | cp->status = STATUS_READ_FAILED; | |
3767 | ||
3768 | hEv = pfn_WSACreateEvent (); | |
3769 | rc = pfn_WSAEventSelect (SOCK_HANDLE (fd), hEv, FD_ACCEPT); | |
3770 | if (rc != SOCKET_ERROR) | |
3771 | { | |
3772 | rc = WaitForSingleObject (hEv, INFINITE); | |
3773 | pfn_WSAEventSelect (SOCK_HANDLE (fd), NULL, 0); | |
64570b36 KS |
3774 | if (rc == WAIT_OBJECT_0) |
3775 | cp->status = STATUS_READ_SUCCEEDED; | |
3776 | } | |
7046f191 | 3777 | pfn_WSACloseEvent (hEv); |
64570b36 KS |
3778 | |
3779 | return cp->status; | |
3780 | } | |
3781 | ||
480b0c5b GV |
3782 | int |
3783 | sys_read (int fd, char * buffer, unsigned int count) | |
3784 | { | |
3785 | int nchars; | |
480b0c5b GV |
3786 | int to_read; |
3787 | DWORD waiting; | |
76b3903d | 3788 | char * orig_buffer = buffer; |
480b0c5b | 3789 | |
7559f399 | 3790 | if (fd < 0) |
480b0c5b GV |
3791 | { |
3792 | errno = EBADF; | |
3793 | return -1; | |
3794 | } | |
3795 | ||
7559f399 | 3796 | if (fd < MAXDESC && fd_info[fd].flags & (FILE_PIPE | FILE_SOCKET)) |
480b0c5b GV |
3797 | { |
3798 | child_process *cp = fd_info[fd].cp; | |
3799 | ||
3800 | if ((fd_info[fd].flags & FILE_READ) == 0) | |
3801 | { | |
3802 | errno = EBADF; | |
3803 | return -1; | |
3804 | } | |
3805 | ||
76b3903d GV |
3806 | nchars = 0; |
3807 | ||
3808 | /* re-read CR carried over from last read */ | |
3809 | if (fd_info[fd].flags & FILE_LAST_CR) | |
3810 | { | |
3811 | if (fd_info[fd].flags & FILE_BINARY) abort (); | |
3812 | *buffer++ = 0x0d; | |
3813 | count--; | |
3814 | nchars++; | |
f52eb3ef | 3815 | fd_info[fd].flags &= ~FILE_LAST_CR; |
76b3903d GV |
3816 | } |
3817 | ||
480b0c5b GV |
3818 | /* presence of a child_process structure means we are operating in |
3819 | non-blocking mode - otherwise we just call _read directly. | |
3820 | Note that the child_process structure might be missing because | |
3821 | reap_subprocess has been called; in this case the pipe is | |
3822 | already broken, so calling _read on it is okay. */ | |
3823 | if (cp) | |
3824 | { | |
3825 | int current_status = cp->status; | |
3826 | ||
3827 | switch (current_status) | |
3828 | { | |
3829 | case STATUS_READ_FAILED: | |
3830 | case STATUS_READ_ERROR: | |
f52eb3ef GV |
3831 | /* report normal EOF if nothing in buffer */ |
3832 | if (nchars <= 0) | |
3833 | fd_info[fd].flags |= FILE_AT_EOF; | |
3834 | return nchars; | |
480b0c5b GV |
3835 | |
3836 | case STATUS_READ_READY: | |
3837 | case STATUS_READ_IN_PROGRESS: | |
3838 | DebPrint (("sys_read called when read is in progress\n")); | |
3839 | errno = EWOULDBLOCK; | |
3840 | return -1; | |
3841 | ||
3842 | case STATUS_READ_SUCCEEDED: | |
3843 | /* consume read-ahead char */ | |
3844 | *buffer++ = cp->chr; | |
3845 | count--; | |
76b3903d | 3846 | nchars++; |
480b0c5b GV |
3847 | cp->status = STATUS_READ_ACKNOWLEDGED; |
3848 | ResetEvent (cp->char_avail); | |
3849 | ||
3850 | case STATUS_READ_ACKNOWLEDGED: | |
3851 | break; | |
3852 | ||
3853 | default: | |
3854 | DebPrint (("sys_read: bad status %d\n", current_status)); | |
3855 | errno = EBADF; | |
3856 | return -1; | |
3857 | } | |
3858 | ||
3859 | if (fd_info[fd].flags & FILE_PIPE) | |
3860 | { | |
3861 | PeekNamedPipe ((HANDLE) _get_osfhandle (fd), NULL, 0, NULL, &waiting, NULL); | |
3862 | to_read = min (waiting, (DWORD) count); | |
f52eb3ef GV |
3863 | |
3864 | if (to_read > 0) | |
3865 | nchars += _read (fd, buffer, to_read); | |
480b0c5b GV |
3866 | } |
3867 | #ifdef HAVE_SOCKETS | |
3868 | else /* FILE_SOCKET */ | |
3869 | { | |
f249a012 | 3870 | if (winsock_lib == NULL) abort (); |
480b0c5b GV |
3871 | |
3872 | /* do the equivalent of a non-blocking read */ | |
3873 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONREAD, &waiting); | |
76b3903d | 3874 | if (waiting == 0 && nchars == 0) |
480b0c5b GV |
3875 | { |
3876 | h_errno = errno = EWOULDBLOCK; | |
3877 | return -1; | |
3878 | } | |
3879 | ||
480b0c5b GV |
3880 | if (waiting) |
3881 | { | |
3882 | /* always use binary mode for sockets */ | |
76b3903d GV |
3883 | int res = pfn_recv (SOCK_HANDLE (fd), buffer, count, 0); |
3884 | if (res == SOCKET_ERROR) | |
480b0c5b GV |
3885 | { |
3886 | DebPrint(("sys_read.recv failed with error %d on socket %ld\n", | |
3887 | pfn_WSAGetLastError (), SOCK_HANDLE (fd))); | |
76b3903d GV |
3888 | set_errno (); |
3889 | return -1; | |
480b0c5b | 3890 | } |
76b3903d | 3891 | nchars += res; |
480b0c5b GV |
3892 | } |
3893 | } | |
3894 | #endif | |
3895 | } | |
3896 | else | |
f52eb3ef GV |
3897 | { |
3898 | int nread = _read (fd, buffer, count); | |
3899 | if (nread >= 0) | |
3900 | nchars += nread; | |
3901 | else if (nchars == 0) | |
3902 | nchars = nread; | |
3903 | } | |
76b3903d | 3904 | |
f52eb3ef GV |
3905 | if (nchars <= 0) |
3906 | fd_info[fd].flags |= FILE_AT_EOF; | |
76b3903d | 3907 | /* Perform text mode translation if required. */ |
f52eb3ef | 3908 | else if ((fd_info[fd].flags & FILE_BINARY) == 0) |
76b3903d GV |
3909 | { |
3910 | nchars = crlf_to_lf (nchars, orig_buffer); | |
3911 | /* If buffer contains only CR, return that. To be absolutely | |
3912 | sure we should attempt to read the next char, but in | |
3913 | practice a CR to be followed by LF would not appear by | |
3914 | itself in the buffer. */ | |
3915 | if (nchars > 1 && orig_buffer[nchars - 1] == 0x0d) | |
3916 | { | |
3917 | fd_info[fd].flags |= FILE_LAST_CR; | |
3918 | nchars--; | |
3919 | } | |
76b3903d | 3920 | } |
480b0c5b GV |
3921 | } |
3922 | else | |
3923 | nchars = _read (fd, buffer, count); | |
3924 | ||
76b3903d | 3925 | return nchars; |
480b0c5b GV |
3926 | } |
3927 | ||
3928 | /* For now, don't bother with a non-blocking mode */ | |
3929 | int | |
3930 | sys_write (int fd, const void * buffer, unsigned int count) | |
3931 | { | |
3932 | int nchars; | |
3933 | ||
7559f399 | 3934 | if (fd < 0) |
480b0c5b GV |
3935 | { |
3936 | errno = EBADF; | |
3937 | return -1; | |
3938 | } | |
3939 | ||
7559f399 | 3940 | if (fd < MAXDESC && fd_info[fd].flags & (FILE_PIPE | FILE_SOCKET)) |
76b3903d GV |
3941 | { |
3942 | if ((fd_info[fd].flags & FILE_WRITE) == 0) | |
3943 | { | |
3944 | errno = EBADF; | |
3945 | return -1; | |
3946 | } | |
3947 | ||
3948 | /* Perform text mode translation if required. */ | |
3949 | if ((fd_info[fd].flags & FILE_BINARY) == 0) | |
3950 | { | |
3951 | char * tmpbuf = alloca (count * 2); | |
3952 | unsigned char * src = (void *)buffer; | |
3953 | unsigned char * dst = tmpbuf; | |
3954 | int nbytes = count; | |
3955 | ||
3956 | while (1) | |
3957 | { | |
3958 | unsigned char *next; | |
3959 | /* copy next line or remaining bytes */ | |
3960 | next = _memccpy (dst, src, '\n', nbytes); | |
3961 | if (next) | |
3962 | { | |
3963 | /* copied one line ending with '\n' */ | |
3964 | int copied = next - dst; | |
3965 | nbytes -= copied; | |
3966 | src += copied; | |
3967 | /* insert '\r' before '\n' */ | |
3968 | next[-1] = '\r'; | |
3969 | next[0] = '\n'; | |
3970 | dst = next + 1; | |
3971 | count++; | |
177c0ea7 | 3972 | } |
76b3903d GV |
3973 | else |
3974 | /* copied remaining partial line -> now finished */ | |
3975 | break; | |
3976 | } | |
3977 | buffer = tmpbuf; | |
3978 | } | |
3979 | } | |
3980 | ||
480b0c5b | 3981 | #ifdef HAVE_SOCKETS |
7559f399 | 3982 | if (fd < MAXDESC && fd_info[fd].flags & FILE_SOCKET) |
480b0c5b | 3983 | { |
30a32e0e | 3984 | unsigned long nblock = 0; |
f249a012 | 3985 | if (winsock_lib == NULL) abort (); |
30a32e0e JR |
3986 | |
3987 | /* TODO: implement select() properly so non-blocking I/O works. */ | |
3988 | /* For now, make sure the write blocks. */ | |
3989 | if (fd_info[fd].flags & FILE_NDELAY) | |
3990 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONBIO, &nblock); | |
3991 | ||
480b0c5b | 3992 | nchars = pfn_send (SOCK_HANDLE (fd), buffer, count, 0); |
30a32e0e JR |
3993 | |
3994 | /* Set the socket back to non-blocking if it was before, | |
3995 | for other operations that support it. */ | |
3996 | if (fd_info[fd].flags & FILE_NDELAY) | |
3997 | { | |
3998 | nblock = 1; | |
3999 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONBIO, &nblock); | |
4000 | } | |
4001 | ||
480b0c5b GV |
4002 | if (nchars == SOCKET_ERROR) |
4003 | { | |
670773af | 4004 | DebPrint(("sys_write.send failed with error %d on socket %ld\n", |
480b0c5b GV |
4005 | pfn_WSAGetLastError (), SOCK_HANDLE (fd))); |
4006 | set_errno (); | |
4007 | } | |
4008 | } | |
4009 | else | |
4010 | #endif | |
4011 | nchars = _write (fd, buffer, count); | |
4012 | ||
4013 | return nchars; | |
4014 | } | |
4015 | ||
f52eb3ef GV |
4016 | static void |
4017 | check_windows_init_file () | |
4018 | { | |
4019 | extern int noninteractive, inhibit_window_system; | |
4020 | ||
4021 | /* A common indication that Emacs is not installed properly is when | |
4022 | it cannot find the Windows installation file. If this file does | |
4023 | not exist in the expected place, tell the user. */ | |
4024 | ||
177c0ea7 | 4025 | if (!noninteractive && !inhibit_window_system) |
d54abccd GV |
4026 | { |
4027 | extern Lisp_Object Vwindow_system, Vload_path, Qfile_exists_p; | |
a0b9c838 | 4028 | Lisp_Object objs[2]; |
96ef7d42 | 4029 | Lisp_Object full_load_path; |
d54abccd GV |
4030 | Lisp_Object init_file; |
4031 | int fd; | |
f52eb3ef | 4032 | |
a0b9c838 GV |
4033 | objs[0] = Vload_path; |
4034 | objs[1] = decode_env_path (0, (getenv ("EMACSLOADPATH"))); | |
4035 | full_load_path = Fappend (2, objs); | |
d54abccd | 4036 | init_file = build_string ("term/w32-win"); |
c50a2aa6 | 4037 | fd = openp (full_load_path, init_file, Fget_load_suffixes (), NULL, Qnil); |
177c0ea7 | 4038 | if (fd < 0) |
d54abccd | 4039 | { |
96ef7d42 | 4040 | Lisp_Object load_path_print = Fprin1_to_string (full_load_path, Qnil); |
d5db4077 KR |
4041 | char *init_file_name = SDATA (init_file); |
4042 | char *load_path = SDATA (load_path_print); | |
acc23b87 KS |
4043 | char *buffer = alloca (1024 |
4044 | + strlen (init_file_name) | |
4045 | + strlen (load_path)); | |
d54abccd | 4046 | |
177c0ea7 | 4047 | sprintf (buffer, |
d54abccd GV |
4048 | "The Emacs Windows initialization file \"%s.el\" " |
4049 | "could not be found in your Emacs installation. " | |
4050 | "Emacs checked the following directories for this file:\n" | |
4051 | "\n%s\n\n" | |
4052 | "When Emacs cannot find this file, it usually means that it " | |
4053 | "was not installed properly, or its distribution file was " | |
4054 | "not unpacked properly.\nSee the README.W32 file in the " | |
4055 | "top-level Emacs directory for more information.", | |
4056 | init_file_name, load_path); | |
4057 | MessageBox (NULL, | |
4058 | buffer, | |
4059 | "Emacs Abort Dialog", | |
4060 | MB_OK | MB_ICONEXCLAMATION | MB_TASKMODAL); | |
f52eb3ef GV |
4061 | /* Use the low-level Emacs abort. */ |
4062 | #undef abort | |
d54abccd GV |
4063 | abort (); |
4064 | } | |
4065 | else | |
4066 | { | |
a302c7ae | 4067 | _close (fd); |
d54abccd | 4068 | } |
f52eb3ef | 4069 | } |
f52eb3ef | 4070 | } |
480b0c5b GV |
4071 | |
4072 | void | |
4073 | term_ntproc () | |
4074 | { | |
4075 | #ifdef HAVE_SOCKETS | |
4076 | /* shutdown the socket interface if necessary */ | |
4077 | term_winsock (); | |
4078 | #endif | |
52c7f9ee JR |
4079 | |
4080 | term_w32select (); | |
480b0c5b GV |
4081 | } |
4082 | ||
4083 | void | |
4084 | init_ntproc () | |
4085 | { | |
4086 | #ifdef HAVE_SOCKETS | |
f249a012 RS |
4087 | /* Initialise the socket interface now if available and requested by |
4088 | the user by defining PRELOAD_WINSOCK; otherwise loading will be | |
fbd6baed | 4089 | delayed until open-network-stream is called (w32-has-winsock can |
f249a012 RS |
4090 | also be used to dynamically load or reload winsock). |
4091 | ||
4092 | Conveniently, init_environment is called before us, so | |
4093 | PRELOAD_WINSOCK can be set in the registry. */ | |
4094 | ||
4095 | /* Always initialize this correctly. */ | |
4096 | winsock_lib = NULL; | |
4097 | ||
4098 | if (getenv ("PRELOAD_WINSOCK") != NULL) | |
4099 | init_winsock (TRUE); | |
480b0c5b GV |
4100 | #endif |
4101 | ||
4102 | /* Initial preparation for subprocess support: replace our standard | |
4103 | handles with non-inheritable versions. */ | |
4104 | { | |
4105 | HANDLE parent; | |
4106 | HANDLE stdin_save = INVALID_HANDLE_VALUE; | |
4107 | HANDLE stdout_save = INVALID_HANDLE_VALUE; | |
4108 | HANDLE stderr_save = INVALID_HANDLE_VALUE; | |
4109 | ||
4110 | parent = GetCurrentProcess (); | |
4111 | ||
4112 | /* ignore errors when duplicating and closing; typically the | |
4113 | handles will be invalid when running as a gui program. */ | |
177c0ea7 JB |
4114 | DuplicateHandle (parent, |
4115 | GetStdHandle (STD_INPUT_HANDLE), | |
480b0c5b | 4116 | parent, |
177c0ea7 JB |
4117 | &stdin_save, |
4118 | 0, | |
4119 | FALSE, | |
480b0c5b | 4120 | DUPLICATE_SAME_ACCESS); |
177c0ea7 | 4121 | |
480b0c5b GV |
4122 | DuplicateHandle (parent, |
4123 | GetStdHandle (STD_OUTPUT_HANDLE), | |
4124 | parent, | |
4125 | &stdout_save, | |
4126 | 0, | |
4127 | FALSE, | |
4128 | DUPLICATE_SAME_ACCESS); | |
177c0ea7 | 4129 | |
480b0c5b GV |
4130 | DuplicateHandle (parent, |
4131 | GetStdHandle (STD_ERROR_HANDLE), | |
4132 | parent, | |
4133 | &stderr_save, | |
4134 | 0, | |
4135 | FALSE, | |
4136 | DUPLICATE_SAME_ACCESS); | |
177c0ea7 | 4137 | |
480b0c5b GV |
4138 | fclose (stdin); |
4139 | fclose (stdout); | |
4140 | fclose (stderr); | |
4141 | ||
4142 | if (stdin_save != INVALID_HANDLE_VALUE) | |
4143 | _open_osfhandle ((long) stdin_save, O_TEXT); | |
4144 | else | |
76b3903d GV |
4145 | _open ("nul", O_TEXT | O_NOINHERIT | O_RDONLY); |
4146 | _fdopen (0, "r"); | |
480b0c5b GV |
4147 | |
4148 | if (stdout_save != INVALID_HANDLE_VALUE) | |
4149 | _open_osfhandle ((long) stdout_save, O_TEXT); | |
4150 | else | |
76b3903d GV |
4151 | _open ("nul", O_TEXT | O_NOINHERIT | O_WRONLY); |
4152 | _fdopen (1, "w"); | |
480b0c5b GV |
4153 | |
4154 | if (stderr_save != INVALID_HANDLE_VALUE) | |
4155 | _open_osfhandle ((long) stderr_save, O_TEXT); | |
4156 | else | |
76b3903d GV |
4157 | _open ("nul", O_TEXT | O_NOINHERIT | O_WRONLY); |
4158 | _fdopen (2, "w"); | |
480b0c5b GV |
4159 | } |
4160 | ||
4161 | /* unfortunately, atexit depends on implementation of malloc */ | |
4162 | /* atexit (term_ntproc); */ | |
4163 | signal (SIGABRT, term_ntproc); | |
76b3903d GV |
4164 | |
4165 | /* determine which drives are fixed, for GetCachedVolumeInformation */ | |
4166 | { | |
4167 | /* GetDriveType must have trailing backslash. */ | |
4168 | char drive[] = "A:\\"; | |
4169 | ||
4170 | /* Loop over all possible drive letters */ | |
4171 | while (*drive <= 'Z') | |
4172 | { | |
4173 | /* Record if this drive letter refers to a fixed drive. */ | |
177c0ea7 | 4174 | fixed_drives[DRIVE_INDEX (*drive)] = |
76b3903d GV |
4175 | (GetDriveType (drive) == DRIVE_FIXED); |
4176 | ||
4177 | (*drive)++; | |
4178 | } | |
a302c7ae AI |
4179 | |
4180 | /* Reset the volume info cache. */ | |
4181 | volume_cache = NULL; | |
76b3903d | 4182 | } |
177c0ea7 | 4183 | |
d54abccd GV |
4184 | /* Check to see if Emacs has been installed correctly. */ |
4185 | check_windows_init_file (); | |
480b0c5b GV |
4186 | } |
4187 | ||
a8c3a596 JR |
4188 | /* |
4189 | shutdown_handler ensures that buffers' autosave files are | |
4190 | up to date when the user logs off, or the system shuts down. | |
4191 | */ | |
4192 | BOOL WINAPI shutdown_handler(DWORD type) | |
4193 | { | |
4194 | /* Ctrl-C and Ctrl-Break are already suppressed, so don't handle them. */ | |
4195 | if (type == CTRL_CLOSE_EVENT /* User closes console window. */ | |
4196 | || type == CTRL_LOGOFF_EVENT /* User logs off. */ | |
4197 | || type == CTRL_SHUTDOWN_EVENT) /* User shutsdown. */ | |
4198 | { | |
4199 | /* Shut down cleanly, making sure autosave files are up to date. */ | |
4200 | shut_down_emacs (0, 0, Qnil); | |
4201 | } | |
4202 | ||
7046f191 | 4203 | /* Allow other handlers to handle this signal. */ |
a8c3a596 JR |
4204 | return FALSE; |
4205 | } | |
4206 | ||
9785d95b BK |
4207 | /* |
4208 | globals_of_w32 is used to initialize those global variables that | |
4209 | must always be initialized on startup even when the global variable | |
4210 | initialized is non zero (see the function main in emacs.c). | |
4211 | */ | |
9bfb11f9 KS |
4212 | void |
4213 | globals_of_w32 () | |
9785d95b | 4214 | { |
74258518 JR |
4215 | HMODULE kernel32 = GetModuleHandle ("kernel32.dll"); |
4216 | ||
4217 | get_process_times_fn = (GetProcessTimes_Proc) | |
4218 | GetProcAddress (kernel32, "GetProcessTimes"); | |
4219 | ||
9785d95b BK |
4220 | g_b_init_is_windows_9x = 0; |
4221 | g_b_init_open_process_token = 0; | |
4222 | g_b_init_get_token_information = 0; | |
4223 | g_b_init_lookup_account_sid = 0; | |
4224 | g_b_init_get_sid_identifier_authority = 0; | |
a8c3a596 JR |
4225 | /* The following sets a handler for shutdown notifications for |
4226 | console apps. This actually applies to Emacs in both console and | |
4227 | GUI modes, since we had to fool windows into thinking emacs is a | |
4228 | console application to get console mode to work. */ | |
4229 | SetConsoleCtrlHandler(shutdown_handler, TRUE); | |
9785d95b BK |
4230 | } |
4231 | ||
aa5ee2a3 | 4232 | /* end of w32.c */ |
ab5796a9 MB |
4233 | |
4234 | /* arch-tag: 90442dd3-37be-482b-b272-ac752e3049f1 | |
4235 | (do not change this comment) */ |