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