Commit | Line | Data |
---|---|---|
95ed0025 | 1 | /* Utility and Unix shadow routines for GNU Emacs support programs on NT. |
59a428eb GM |
2 | |
3 | Copyright (C) 1994, 2001-2012 Free Software Foundation, Inc. | |
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 RS |
22 | |
23 | #include <windows.h> | |
24 | #include <stdlib.h> | |
25 | #include <stdio.h> | |
14f29224 GV |
26 | #include <time.h> |
27 | #include <direct.h> | |
10fea9c4 EZ |
28 | #include <sys/types.h> |
29 | #include <sys/stat.h> | |
30 | #include <errno.h> | |
9c88f339 | 31 | #include <ctype.h> |
62aba0d4 | 32 | #include <sys/timeb.h> |
27067208 | 33 | #include <mbstring.h> |
14f29224 GV |
34 | |
35 | #include "ntlib.h" | |
95ed0025 | 36 | |
62aba0d4 FP |
37 | struct timezone |
38 | { | |
39 | int tz_minuteswest; /* minutes west of Greenwich */ | |
40 | int tz_dsttime; /* type of dst correction */ | |
41 | }; | |
42 | ||
95ed0025 RS |
43 | #define MAXPATHLEN _MAX_PATH |
44 | ||
45 | /* Emulate sleep...we could have done this with a define, but that | |
46 | would necessitate including windows.h in the files that used it. | |
47 | This is much easier. */ | |
48 | void | |
7c3320d8 | 49 | sleep (unsigned long seconds) |
95ed0025 RS |
50 | { |
51 | Sleep (seconds * 1000); | |
52 | } | |
53 | ||
54 | /* Get the current working directory. */ | |
133319ab | 55 | char * |
95ed0025 RS |
56 | getwd (char *dir) |
57 | { | |
14f29224 GV |
58 | if (GetCurrentDirectory (MAXPATHLEN, dir) > 0) |
59 | return dir; | |
60 | return NULL; | |
95ed0025 RS |
61 | } |
62 | ||
63 | static HANDLE getppid_parent; | |
64 | static int getppid_ppid; | |
65 | ||
66 | int | |
7c3320d8 | 67 | getppid (void) |
95ed0025 RS |
68 | { |
69 | char *ppid; | |
70 | DWORD result; | |
71 | ||
97e3c91b | 72 | ppid = getenv ("EM_PARENT_PROCESS_ID"); |
177c0ea7 | 73 | if (!ppid) |
95ed0025 | 74 | { |
7c3320d8 | 75 | printf ("no pid.\n"); |
95ed0025 | 76 | return 0; |
177c0ea7 JB |
77 | } |
78 | else | |
95ed0025 RS |
79 | { |
80 | getppid_ppid = atoi (ppid); | |
81 | } | |
82 | ||
177c0ea7 | 83 | if (!getppid_parent) |
95ed0025 | 84 | { |
7c3320d8 | 85 | getppid_parent = OpenProcess (SYNCHRONIZE, FALSE, atoi (ppid)); |
177c0ea7 | 86 | if (!getppid_parent) |
95ed0025 RS |
87 | { |
88 | printf ("Failed to open handle to parent process: %d\n", | |
7c3320d8 | 89 | GetLastError ()); |
95ed0025 RS |
90 | exit (1); |
91 | } | |
92 | } | |
93 | ||
94 | result = WaitForSingleObject (getppid_parent, 0); | |
177c0ea7 | 95 | switch (result) |
95ed0025 RS |
96 | { |
97 | case WAIT_TIMEOUT: | |
98 | /* The parent is still alive. */ | |
99 | return getppid_ppid; | |
100 | case WAIT_OBJECT_0: | |
101 | /* The parent is gone. Return the pid of Unix init (1). */ | |
102 | return 1; | |
103 | case WAIT_FAILED: | |
104 | default: | |
7c3320d8 | 105 | printf ("Checking parent status failed: %d\n", GetLastError ()); |
95ed0025 RS |
106 | exit (1); |
107 | } | |
108 | } | |
14f29224 GV |
109 | |
110 | char * | |
7c3320d8 | 111 | getlogin (void) |
14f29224 GV |
112 | { |
113 | static char user_name[256]; | |
114 | DWORD length = sizeof (user_name); | |
115 | ||
116 | if (GetUserName (user_name, &length)) | |
117 | return user_name; | |
118 | return NULL; | |
119 | } | |
120 | ||
121 | char * | |
122 | cuserid (char * s) | |
123 | { | |
124 | char * name = getlogin (); | |
125 | if (s) | |
126 | return strcpy (s, name ? name : ""); | |
127 | return name; | |
128 | } | |
129 | ||
22749e9a | 130 | unsigned |
7c3320d8 | 131 | getuid (void) |
14f29224 GV |
132 | { |
133 | return 0; | |
134 | } | |
135 | ||
b372fceb | 136 | unsigned |
7c3320d8 | 137 | getgid (void) |
b372fceb JB |
138 | { |
139 | return 0; | |
140 | } | |
141 | ||
142 | unsigned | |
7c3320d8 | 143 | getegid (void) |
b372fceb JB |
144 | { |
145 | return 0; | |
146 | } | |
147 | ||
14f29224 | 148 | int |
22749e9a | 149 | setuid (unsigned uid) |
14f29224 GV |
150 | { |
151 | return 0; | |
152 | } | |
153 | ||
b372fceb | 154 | int |
f915f0f7 | 155 | setregid (unsigned rgid, unsigned gid) |
b372fceb JB |
156 | { |
157 | return 0; | |
158 | } | |
159 | ||
14f29224 | 160 | struct passwd * |
22749e9a | 161 | getpwuid (unsigned uid) |
14f29224 GV |
162 | { |
163 | return NULL; | |
164 | } | |
165 | ||
166 | char * | |
167 | getpass (const char * prompt) | |
168 | { | |
169 | static char input[256]; | |
170 | HANDLE in; | |
171 | HANDLE err; | |
172 | DWORD count; | |
173 | ||
174 | in = GetStdHandle (STD_INPUT_HANDLE); | |
175 | err = GetStdHandle (STD_ERROR_HANDLE); | |
176 | ||
177 | if (in == INVALID_HANDLE_VALUE || err == INVALID_HANDLE_VALUE) | |
178 | return NULL; | |
179 | ||
180 | if (WriteFile (err, prompt, strlen (prompt), &count, NULL)) | |
181 | { | |
182 | int istty = (GetFileType (in) == FILE_TYPE_CHAR); | |
183 | DWORD old_flags; | |
184 | int rc; | |
185 | ||
186 | if (istty) | |
187 | { | |
188 | if (GetConsoleMode (in, &old_flags)) | |
189 | SetConsoleMode (in, ENABLE_LINE_INPUT | ENABLE_PROCESSED_INPUT); | |
190 | else | |
191 | istty = 0; | |
192 | } | |
193 | rc = ReadFile (in, input, sizeof (input), &count, NULL); | |
194 | if (count >= 2 && input[count - 2] == '\r') | |
195 | input[count - 2] = '\0'; | |
196 | else | |
197 | { | |
198 | char buf[256]; | |
199 | while (ReadFile (in, buf, sizeof (buf), &count, NULL) > 0) | |
200 | if (count >= 2 && buf[count - 2] == '\r') | |
201 | break; | |
202 | } | |
203 | WriteFile (err, "\r\n", 2, &count, NULL); | |
204 | if (istty) | |
205 | SetConsoleMode (in, old_flags); | |
206 | if (rc) | |
207 | return input; | |
208 | } | |
209 | ||
210 | return NULL; | |
211 | } | |
212 | ||
62aba0d4 FP |
213 | /* This is needed because lib/gettime.c calls gettimeofday, which MSVC |
214 | doesn't have. Copied from w32.c. */ | |
215 | void | |
216 | gettimeofday (struct timeval *tv, struct timezone *tz) | |
217 | { | |
218 | struct _timeb tb; | |
219 | _ftime (&tb); | |
220 | ||
221 | tv->tv_sec = tb.time; | |
222 | tv->tv_usec = tb.millitm * 1000L; | |
223 | /* Implementation note: _ftime sometimes doesn't update the dstflag | |
224 | according to the new timezone when the system timezone is | |
225 | changed. We could fix that by using GetSystemTime and | |
226 | GetTimeZoneInformation, but that doesn't seem necessary, since | |
227 | Emacs always calls gettimeofday with the 2nd argument NULL (see | |
228 | current_emacs_time). */ | |
229 | if (tz) | |
230 | { | |
231 | tz->tz_minuteswest = tb.timezone; /* minutes west of Greenwich */ | |
232 | tz->tz_dsttime = tb.dstflag; /* type of dst correction */ | |
233 | } | |
234 | } | |
235 | ||
14f29224 | 236 | int |
22749e9a | 237 | fchown (int fd, unsigned uid, unsigned gid) |
14f29224 GV |
238 | { |
239 | return 0; | |
240 | } | |
241 | ||
242 | /* Place a wrapper around the MSVC version of ctime. It returns NULL | |
177c0ea7 | 243 | on network directories, so we handle that case here. |
14f29224 GV |
244 | (Ulrich Leodolter, 1/11/95). */ |
245 | char * | |
246 | sys_ctime (const time_t *t) | |
247 | { | |
248 | char *str = (char *) ctime (t); | |
249 | return (str ? str : "Sun Jan 01 00:00:00 1970"); | |
250 | } | |
251 | ||
252 | FILE * | |
7c3320d8 | 253 | sys_fopen (const char * path, const char * mode) |
14f29224 GV |
254 | { |
255 | return fopen (path, mode); | |
256 | } | |
257 | ||
258 | int | |
259 | sys_chdir (const char * path) | |
260 | { | |
261 | return _chdir (path); | |
262 | } | |
ab5796a9 | 263 | |
10fea9c4 EZ |
264 | static FILETIME utc_base_ft; |
265 | static long double utc_base; | |
266 | static int init = 0; | |
267 | ||
268 | static time_t | |
269 | convert_time (FILETIME ft) | |
270 | { | |
271 | long double ret; | |
272 | ||
273 | if (CompareFileTime (&ft, &utc_base_ft) < 0) | |
274 | return 0; | |
275 | ||
276 | ret = (long double) ft.dwHighDateTime | |
277 | * 4096.0L * 1024.0L * 1024.0L + ft.dwLowDateTime; | |
278 | ret -= utc_base; | |
279 | return (time_t) (ret * 1e-7L); | |
280 | } | |
281 | ||
282 | static int | |
283 | is_exec (const char * name) | |
284 | { | |
285 | char * p = strrchr (name, '.'); | |
286 | return | |
287 | (p != NULL | |
288 | && (stricmp (p, ".exe") == 0 || | |
289 | stricmp (p, ".com") == 0 || | |
290 | stricmp (p, ".bat") == 0 || | |
291 | stricmp (p, ".cmd") == 0)); | |
292 | } | |
293 | ||
59a428eb | 294 | /* FIXME? This is in config.nt now - is this still needed? */ |
10fea9c4 EZ |
295 | #define IS_DIRECTORY_SEP(x) ((x) == '/' || (x) == '\\') |
296 | ||
297 | /* We need this because nt/inc/sys/stat.h defines struct stat that is | |
298 | incompatible with the MS run-time libraries. */ | |
299 | int | |
300 | stat (const char * path, struct stat * buf) | |
301 | { | |
302 | WIN32_FIND_DATA wfd; | |
303 | HANDLE fh; | |
304 | int permission; | |
305 | int len; | |
306 | int rootdir = FALSE; | |
307 | char *name = alloca (FILENAME_MAX); | |
308 | ||
309 | if (!init) | |
310 | { | |
311 | /* Determine the delta between 1-Jan-1601 and 1-Jan-1970. */ | |
312 | SYSTEMTIME st; | |
313 | ||
314 | st.wYear = 1970; | |
315 | st.wMonth = 1; | |
316 | st.wDay = 1; | |
317 | st.wHour = 0; | |
318 | st.wMinute = 0; | |
319 | st.wSecond = 0; | |
320 | st.wMilliseconds = 0; | |
321 | ||
322 | SystemTimeToFileTime (&st, &utc_base_ft); | |
323 | utc_base = (long double) utc_base_ft.dwHighDateTime | |
324 | * 4096.0L * 1024.0L * 1024.0L + utc_base_ft.dwLowDateTime; | |
325 | init = 1; | |
326 | } | |
327 | ||
328 | if (path == NULL || buf == NULL || *path == '\0') | |
329 | { | |
330 | errno = EFAULT; | |
331 | return -1; | |
332 | } | |
333 | if (_mbspbrk (path, "*?|<>\"")) | |
334 | { | |
335 | errno = ENOENT; | |
336 | return -1; | |
337 | } | |
338 | ||
339 | strcpy (name, path); | |
340 | /* Remove trailing directory separator, unless name is the root | |
341 | directory of a drive in which case ensure there is a trailing | |
342 | separator. */ | |
343 | len = strlen (name); | |
344 | rootdir = IS_DIRECTORY_SEP (name[0]) | |
345 | || (len == 3 && name[1] == ':' && IS_DIRECTORY_SEP (name[2])); | |
346 | if (rootdir) | |
347 | { | |
348 | if (GetDriveType (name) < 2) | |
349 | { | |
350 | errno = ENOENT; | |
351 | return -1; | |
352 | } | |
353 | memset (&wfd, 0, sizeof (wfd)); | |
354 | wfd.dwFileAttributes = FILE_ATTRIBUTE_DIRECTORY; | |
355 | wfd.ftCreationTime = utc_base_ft; | |
356 | wfd.ftLastAccessTime = utc_base_ft; | |
357 | wfd.ftLastWriteTime = utc_base_ft; | |
358 | strcpy (wfd.cFileName, name); | |
359 | } | |
360 | else | |
361 | { | |
362 | if (IS_DIRECTORY_SEP (name[len-1])) | |
363 | name[len - 1] = 0; | |
364 | ||
365 | fh = FindFirstFile (name, &wfd); | |
366 | if (fh == INVALID_HANDLE_VALUE) | |
367 | { | |
368 | errno = ENOENT; | |
369 | return -1; | |
370 | } | |
371 | FindClose (fh); | |
372 | } | |
373 | buf->st_mode = (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) ? | |
374 | S_IFDIR : S_IFREG; | |
375 | buf->st_nlink = 1; | |
376 | buf->st_ino = 0; | |
377 | ||
378 | if (name[0] && name[1] == ':') | |
379 | buf->st_dev = tolower (name[0]) - 'a' + 1; | |
380 | else | |
381 | buf->st_dev = _getdrive (); | |
382 | buf->st_rdev = buf->st_dev; | |
383 | ||
384 | buf->st_size = wfd.nFileSizeLow; | |
385 | ||
386 | /* Convert timestamps to Unix format. */ | |
387 | buf->st_mtime = convert_time (wfd.ftLastWriteTime); | |
388 | buf->st_atime = convert_time (wfd.ftLastAccessTime); | |
389 | if (buf->st_atime == 0) buf->st_atime = buf->st_mtime; | |
390 | buf->st_ctime = convert_time (wfd.ftCreationTime); | |
391 | if (buf->st_ctime == 0) buf->st_ctime = buf->st_mtime; | |
392 | ||
393 | /* determine rwx permissions */ | |
394 | if (wfd.dwFileAttributes & FILE_ATTRIBUTE_READONLY) | |
395 | permission = S_IREAD; | |
396 | else | |
397 | permission = S_IREAD | S_IWRITE; | |
398 | ||
399 | if (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) | |
400 | permission |= S_IEXEC; | |
401 | else if (is_exec (name)) | |
402 | permission |= S_IEXEC; | |
403 | ||
404 | buf->st_mode |= permission | (permission >> 3) | (permission >> 6); | |
405 | ||
406 | return 0; | |
407 | } | |
408 | ||
6dad7178 EZ |
409 | int |
410 | lstat (const char * path, struct stat * buf) | |
411 | { | |
412 | return stat (path, buf); | |
413 | } | |
414 |