Commit | Line | Data |
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95ed0025 | 1 | /* Utility and Unix shadow routines for GNU Emacs support programs on NT. |
59a428eb | 2 | |
ab422c4d | 3 | Copyright (C) 1994, 2001-2013 Free Software Foundation, Inc. |
59a428eb GM |
4 | |
5 | Author: Geoff Voelker (voelker@cs.washington.edu) | |
6 | Created: 10-8-94 | |
95ed0025 | 7 | |
3b7ad313 EN |
8 | This file is part of GNU Emacs. |
9 | ||
294981c7 | 10 | GNU Emacs is free software: you can redistribute it and/or modify |
3b7ad313 | 11 | it under the terms of the GNU General Public License as published by |
294981c7 GM |
12 | the Free Software Foundation, either version 3 of the License, or |
13 | (at your option) any later version. | |
3b7ad313 EN |
14 | |
15 | GNU Emacs is distributed in the hope that it will be useful, | |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
19 | ||
20 | You should have received a copy of the GNU General Public License | |
59a428eb | 21 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
95ed0025 | 22 | |
7c4026b6 EZ |
23 | #ifdef __MINGW32__ |
24 | /* A kludge to avoid including header files in lib/. They cannot be | |
25 | configured-out, and their stuff interferes with what we have | |
26 | defined in this header and in other headers in nt/inc. Yuck! */ | |
27 | #define __need_system_fcntl_h | |
28 | #define _GL_FCNTL_H | |
29 | #define _GL_JUST_INCLUDE_SYSTEM_INTTYPES_H | |
30 | #define _GL_ALREADY_INCLUDING_SIGNAL_H | |
31 | #define _GL_ALREADY_INCLUDING_STDIO_H | |
32 | #define __need_system_stdlib_h | |
33 | #define _GL_TIME_H | |
34 | #define __need_system_sys_stat_h | |
35 | #endif | |
36 | ||
95ed0025 RS |
37 | #include <windows.h> |
38 | #include <stdlib.h> | |
39 | #include <stdio.h> | |
14f29224 GV |
40 | #include <time.h> |
41 | #include <direct.h> | |
10fea9c4 EZ |
42 | #include <sys/types.h> |
43 | #include <sys/stat.h> | |
44 | #include <errno.h> | |
9c88f339 | 45 | #include <ctype.h> |
62aba0d4 | 46 | #include <sys/timeb.h> |
27067208 | 47 | #include <mbstring.h> |
14f29224 GV |
48 | |
49 | #include "ntlib.h" | |
95ed0025 | 50 | |
b88b62de EZ |
51 | /* MinGW64 defines _TIMEZONE_DEFINED and defines 'struct timespec' in |
52 | its system headers. */ | |
53 | #ifndef _TIMEZONE_DEFINED | |
62aba0d4 FP |
54 | struct timezone |
55 | { | |
56 | int tz_minuteswest; /* minutes west of Greenwich */ | |
57 | int tz_dsttime; /* type of dst correction */ | |
58 | }; | |
b88b62de | 59 | #endif |
62aba0d4 | 60 | |
95ed0025 RS |
61 | #define MAXPATHLEN _MAX_PATH |
62 | ||
63 | /* Emulate sleep...we could have done this with a define, but that | |
64 | would necessitate including windows.h in the files that used it. | |
65 | This is much easier. */ | |
7c4026b6 EZ |
66 | unsigned |
67 | sleep (unsigned seconds) | |
95ed0025 RS |
68 | { |
69 | Sleep (seconds * 1000); | |
7c4026b6 | 70 | return 0; |
95ed0025 RS |
71 | } |
72 | ||
73 | /* Get the current working directory. */ | |
133319ab | 74 | char * |
95ed0025 RS |
75 | getwd (char *dir) |
76 | { | |
14f29224 GV |
77 | if (GetCurrentDirectory (MAXPATHLEN, dir) > 0) |
78 | return dir; | |
79 | return NULL; | |
95ed0025 RS |
80 | } |
81 | ||
82 | static HANDLE getppid_parent; | |
83 | static int getppid_ppid; | |
84 | ||
85 | int | |
7c3320d8 | 86 | getppid (void) |
95ed0025 RS |
87 | { |
88 | char *ppid; | |
89 | DWORD result; | |
90 | ||
97e3c91b | 91 | ppid = getenv ("EM_PARENT_PROCESS_ID"); |
177c0ea7 | 92 | if (!ppid) |
95ed0025 | 93 | { |
7c3320d8 | 94 | printf ("no pid.\n"); |
95ed0025 | 95 | return 0; |
177c0ea7 JB |
96 | } |
97 | else | |
95ed0025 RS |
98 | { |
99 | getppid_ppid = atoi (ppid); | |
100 | } | |
101 | ||
177c0ea7 | 102 | if (!getppid_parent) |
95ed0025 | 103 | { |
7c3320d8 | 104 | getppid_parent = OpenProcess (SYNCHRONIZE, FALSE, atoi (ppid)); |
177c0ea7 | 105 | if (!getppid_parent) |
95ed0025 RS |
106 | { |
107 | printf ("Failed to open handle to parent process: %d\n", | |
7c3320d8 | 108 | GetLastError ()); |
95ed0025 RS |
109 | exit (1); |
110 | } | |
111 | } | |
112 | ||
113 | result = WaitForSingleObject (getppid_parent, 0); | |
177c0ea7 | 114 | switch (result) |
95ed0025 RS |
115 | { |
116 | case WAIT_TIMEOUT: | |
117 | /* The parent is still alive. */ | |
118 | return getppid_ppid; | |
119 | case WAIT_OBJECT_0: | |
120 | /* The parent is gone. Return the pid of Unix init (1). */ | |
121 | return 1; | |
122 | case WAIT_FAILED: | |
123 | default: | |
7c3320d8 | 124 | printf ("Checking parent status failed: %d\n", GetLastError ()); |
95ed0025 RS |
125 | exit (1); |
126 | } | |
127 | } | |
14f29224 GV |
128 | |
129 | char * | |
7c3320d8 | 130 | getlogin (void) |
14f29224 GV |
131 | { |
132 | static char user_name[256]; | |
133 | DWORD length = sizeof (user_name); | |
134 | ||
135 | if (GetUserName (user_name, &length)) | |
136 | return user_name; | |
137 | return NULL; | |
138 | } | |
139 | ||
140 | char * | |
141 | cuserid (char * s) | |
142 | { | |
143 | char * name = getlogin (); | |
144 | if (s) | |
145 | return strcpy (s, name ? name : ""); | |
146 | return name; | |
147 | } | |
148 | ||
22749e9a | 149 | unsigned |
7c3320d8 | 150 | getuid (void) |
14f29224 GV |
151 | { |
152 | return 0; | |
153 | } | |
154 | ||
7c4026b6 EZ |
155 | unsigned |
156 | geteuid (void) | |
157 | { | |
158 | return getuid (); | |
159 | } | |
160 | ||
b372fceb | 161 | unsigned |
7c3320d8 | 162 | getgid (void) |
b372fceb JB |
163 | { |
164 | return 0; | |
165 | } | |
166 | ||
167 | unsigned | |
7c3320d8 | 168 | getegid (void) |
b372fceb JB |
169 | { |
170 | return 0; | |
171 | } | |
172 | ||
14f29224 | 173 | int |
22749e9a | 174 | setuid (unsigned uid) |
14f29224 GV |
175 | { |
176 | return 0; | |
177 | } | |
178 | ||
b372fceb | 179 | int |
f915f0f7 | 180 | setregid (unsigned rgid, unsigned gid) |
b372fceb JB |
181 | { |
182 | return 0; | |
183 | } | |
184 | ||
14f29224 | 185 | struct passwd * |
22749e9a | 186 | getpwuid (unsigned uid) |
14f29224 GV |
187 | { |
188 | return NULL; | |
189 | } | |
190 | ||
191 | char * | |
192 | getpass (const char * prompt) | |
193 | { | |
194 | static char input[256]; | |
195 | HANDLE in; | |
196 | HANDLE err; | |
197 | DWORD count; | |
198 | ||
199 | in = GetStdHandle (STD_INPUT_HANDLE); | |
200 | err = GetStdHandle (STD_ERROR_HANDLE); | |
201 | ||
202 | if (in == INVALID_HANDLE_VALUE || err == INVALID_HANDLE_VALUE) | |
203 | return NULL; | |
204 | ||
205 | if (WriteFile (err, prompt, strlen (prompt), &count, NULL)) | |
206 | { | |
207 | int istty = (GetFileType (in) == FILE_TYPE_CHAR); | |
208 | DWORD old_flags; | |
209 | int rc; | |
210 | ||
211 | if (istty) | |
212 | { | |
213 | if (GetConsoleMode (in, &old_flags)) | |
214 | SetConsoleMode (in, ENABLE_LINE_INPUT | ENABLE_PROCESSED_INPUT); | |
215 | else | |
216 | istty = 0; | |
217 | } | |
218 | rc = ReadFile (in, input, sizeof (input), &count, NULL); | |
219 | if (count >= 2 && input[count - 2] == '\r') | |
220 | input[count - 2] = '\0'; | |
221 | else | |
222 | { | |
223 | char buf[256]; | |
224 | while (ReadFile (in, buf, sizeof (buf), &count, NULL) > 0) | |
225 | if (count >= 2 && buf[count - 2] == '\r') | |
226 | break; | |
227 | } | |
228 | WriteFile (err, "\r\n", 2, &count, NULL); | |
229 | if (istty) | |
230 | SetConsoleMode (in, old_flags); | |
231 | if (rc) | |
232 | return input; | |
233 | } | |
234 | ||
235 | return NULL; | |
236 | } | |
237 | ||
62aba0d4 FP |
238 | /* This is needed because lib/gettime.c calls gettimeofday, which MSVC |
239 | doesn't have. Copied from w32.c. */ | |
240 | void | |
241 | gettimeofday (struct timeval *tv, struct timezone *tz) | |
242 | { | |
243 | struct _timeb tb; | |
244 | _ftime (&tb); | |
245 | ||
246 | tv->tv_sec = tb.time; | |
247 | tv->tv_usec = tb.millitm * 1000L; | |
248 | /* Implementation note: _ftime sometimes doesn't update the dstflag | |
249 | according to the new timezone when the system timezone is | |
250 | changed. We could fix that by using GetSystemTime and | |
251 | GetTimeZoneInformation, but that doesn't seem necessary, since | |
252 | Emacs always calls gettimeofday with the 2nd argument NULL (see | |
253 | current_emacs_time). */ | |
254 | if (tz) | |
255 | { | |
256 | tz->tz_minuteswest = tb.timezone; /* minutes west of Greenwich */ | |
257 | tz->tz_dsttime = tb.dstflag; /* type of dst correction */ | |
258 | } | |
259 | } | |
260 | ||
14f29224 | 261 | int |
22749e9a | 262 | fchown (int fd, unsigned uid, unsigned gid) |
14f29224 GV |
263 | { |
264 | return 0; | |
265 | } | |
266 | ||
267 | /* Place a wrapper around the MSVC version of ctime. It returns NULL | |
177c0ea7 | 268 | on network directories, so we handle that case here. |
14f29224 GV |
269 | (Ulrich Leodolter, 1/11/95). */ |
270 | char * | |
271 | sys_ctime (const time_t *t) | |
272 | { | |
273 | char *str = (char *) ctime (t); | |
274 | return (str ? str : "Sun Jan 01 00:00:00 1970"); | |
275 | } | |
276 | ||
277 | FILE * | |
7c3320d8 | 278 | sys_fopen (const char * path, const char * mode) |
14f29224 GV |
279 | { |
280 | return fopen (path, mode); | |
281 | } | |
282 | ||
283 | int | |
284 | sys_chdir (const char * path) | |
285 | { | |
286 | return _chdir (path); | |
287 | } | |
ab5796a9 | 288 | |
10fea9c4 EZ |
289 | static FILETIME utc_base_ft; |
290 | static long double utc_base; | |
291 | static int init = 0; | |
292 | ||
293 | static time_t | |
294 | convert_time (FILETIME ft) | |
295 | { | |
296 | long double ret; | |
297 | ||
298 | if (CompareFileTime (&ft, &utc_base_ft) < 0) | |
299 | return 0; | |
300 | ||
301 | ret = (long double) ft.dwHighDateTime | |
302 | * 4096.0L * 1024.0L * 1024.0L + ft.dwLowDateTime; | |
303 | ret -= utc_base; | |
304 | return (time_t) (ret * 1e-7L); | |
305 | } | |
306 | ||
307 | static int | |
308 | is_exec (const char * name) | |
309 | { | |
310 | char * p = strrchr (name, '.'); | |
311 | return | |
312 | (p != NULL | |
313 | && (stricmp (p, ".exe") == 0 || | |
314 | stricmp (p, ".com") == 0 || | |
315 | stricmp (p, ".bat") == 0 || | |
316 | stricmp (p, ".cmd") == 0)); | |
317 | } | |
318 | ||
59a428eb | 319 | /* FIXME? This is in config.nt now - is this still needed? */ |
10fea9c4 EZ |
320 | #define IS_DIRECTORY_SEP(x) ((x) == '/' || (x) == '\\') |
321 | ||
322 | /* We need this because nt/inc/sys/stat.h defines struct stat that is | |
323 | incompatible with the MS run-time libraries. */ | |
324 | int | |
325 | stat (const char * path, struct stat * buf) | |
326 | { | |
327 | WIN32_FIND_DATA wfd; | |
328 | HANDLE fh; | |
329 | int permission; | |
330 | int len; | |
331 | int rootdir = FALSE; | |
332 | char *name = alloca (FILENAME_MAX); | |
333 | ||
334 | if (!init) | |
335 | { | |
336 | /* Determine the delta between 1-Jan-1601 and 1-Jan-1970. */ | |
337 | SYSTEMTIME st; | |
338 | ||
339 | st.wYear = 1970; | |
340 | st.wMonth = 1; | |
341 | st.wDay = 1; | |
342 | st.wHour = 0; | |
343 | st.wMinute = 0; | |
344 | st.wSecond = 0; | |
345 | st.wMilliseconds = 0; | |
346 | ||
347 | SystemTimeToFileTime (&st, &utc_base_ft); | |
348 | utc_base = (long double) utc_base_ft.dwHighDateTime | |
349 | * 4096.0L * 1024.0L * 1024.0L + utc_base_ft.dwLowDateTime; | |
350 | init = 1; | |
351 | } | |
352 | ||
353 | if (path == NULL || buf == NULL || *path == '\0') | |
354 | { | |
355 | errno = EFAULT; | |
356 | return -1; | |
357 | } | |
358 | if (_mbspbrk (path, "*?|<>\"")) | |
359 | { | |
360 | errno = ENOENT; | |
361 | return -1; | |
362 | } | |
363 | ||
364 | strcpy (name, path); | |
365 | /* Remove trailing directory separator, unless name is the root | |
366 | directory of a drive in which case ensure there is a trailing | |
367 | separator. */ | |
368 | len = strlen (name); | |
369 | rootdir = IS_DIRECTORY_SEP (name[0]) | |
370 | || (len == 3 && name[1] == ':' && IS_DIRECTORY_SEP (name[2])); | |
371 | if (rootdir) | |
372 | { | |
373 | if (GetDriveType (name) < 2) | |
374 | { | |
375 | errno = ENOENT; | |
376 | return -1; | |
377 | } | |
378 | memset (&wfd, 0, sizeof (wfd)); | |
379 | wfd.dwFileAttributes = FILE_ATTRIBUTE_DIRECTORY; | |
380 | wfd.ftCreationTime = utc_base_ft; | |
381 | wfd.ftLastAccessTime = utc_base_ft; | |
382 | wfd.ftLastWriteTime = utc_base_ft; | |
383 | strcpy (wfd.cFileName, name); | |
384 | } | |
385 | else | |
386 | { | |
387 | if (IS_DIRECTORY_SEP (name[len-1])) | |
388 | name[len - 1] = 0; | |
389 | ||
390 | fh = FindFirstFile (name, &wfd); | |
391 | if (fh == INVALID_HANDLE_VALUE) | |
392 | { | |
393 | errno = ENOENT; | |
394 | return -1; | |
395 | } | |
396 | FindClose (fh); | |
397 | } | |
398 | buf->st_mode = (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) ? | |
399 | S_IFDIR : S_IFREG; | |
400 | buf->st_nlink = 1; | |
401 | buf->st_ino = 0; | |
402 | ||
403 | if (name[0] && name[1] == ':') | |
404 | buf->st_dev = tolower (name[0]) - 'a' + 1; | |
405 | else | |
406 | buf->st_dev = _getdrive (); | |
407 | buf->st_rdev = buf->st_dev; | |
408 | ||
409 | buf->st_size = wfd.nFileSizeLow; | |
410 | ||
411 | /* Convert timestamps to Unix format. */ | |
412 | buf->st_mtime = convert_time (wfd.ftLastWriteTime); | |
413 | buf->st_atime = convert_time (wfd.ftLastAccessTime); | |
414 | if (buf->st_atime == 0) buf->st_atime = buf->st_mtime; | |
415 | buf->st_ctime = convert_time (wfd.ftCreationTime); | |
416 | if (buf->st_ctime == 0) buf->st_ctime = buf->st_mtime; | |
417 | ||
418 | /* determine rwx permissions */ | |
419 | if (wfd.dwFileAttributes & FILE_ATTRIBUTE_READONLY) | |
420 | permission = S_IREAD; | |
421 | else | |
422 | permission = S_IREAD | S_IWRITE; | |
423 | ||
424 | if (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) | |
425 | permission |= S_IEXEC; | |
426 | else if (is_exec (name)) | |
427 | permission |= S_IEXEC; | |
428 | ||
429 | buf->st_mode |= permission | (permission >> 3) | (permission >> 6); | |
430 | ||
431 | return 0; | |
432 | } | |
433 | ||
6dad7178 EZ |
434 | int |
435 | lstat (const char * path, struct stat * buf) | |
436 | { | |
437 | return stat (path, buf); | |
438 | } |