Commit | Line | Data |
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95ed0025 | 1 | /* Utility and Unix shadow routines for GNU Emacs support programs on NT. |
73b0cd50 | 2 | Copyright (C) 1994, 2001-2011 Free Software Foundation, Inc. |
95ed0025 | 3 | |
3b7ad313 EN |
4 | This file is part of GNU Emacs. |
5 | ||
294981c7 | 6 | GNU Emacs is free software: you can redistribute it and/or modify |
3b7ad313 | 7 | it under the terms of the GNU General Public License as published by |
294981c7 GM |
8 | the Free Software Foundation, either version 3 of the License, or |
9 | (at your option) any later version. | |
3b7ad313 EN |
10 | |
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
294981c7 GM |
17 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
18 | ||
95ed0025 RS |
19 | |
20 | Geoff Voelker (voelker@cs.washington.edu) 10-8-94 | |
21 | */ | |
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> | |
14f29224 GV |
31 | |
32 | #include "ntlib.h" | |
95ed0025 RS |
33 | |
34 | #define MAXPATHLEN _MAX_PATH | |
35 | ||
36 | /* Emulate sleep...we could have done this with a define, but that | |
37 | would necessitate including windows.h in the files that used it. | |
38 | This is much easier. */ | |
39 | void | |
7c3320d8 | 40 | sleep (unsigned long seconds) |
95ed0025 RS |
41 | { |
42 | Sleep (seconds * 1000); | |
43 | } | |
44 | ||
45 | /* Get the current working directory. */ | |
133319ab | 46 | char * |
95ed0025 RS |
47 | getwd (char *dir) |
48 | { | |
14f29224 GV |
49 | if (GetCurrentDirectory (MAXPATHLEN, dir) > 0) |
50 | return dir; | |
51 | return NULL; | |
95ed0025 RS |
52 | } |
53 | ||
54 | static HANDLE getppid_parent; | |
55 | static int getppid_ppid; | |
56 | ||
57 | int | |
7c3320d8 | 58 | getppid (void) |
95ed0025 RS |
59 | { |
60 | char *ppid; | |
61 | DWORD result; | |
62 | ||
97e3c91b | 63 | ppid = getenv ("EM_PARENT_PROCESS_ID"); |
177c0ea7 | 64 | if (!ppid) |
95ed0025 | 65 | { |
7c3320d8 | 66 | printf ("no pid.\n"); |
95ed0025 | 67 | return 0; |
177c0ea7 JB |
68 | } |
69 | else | |
95ed0025 RS |
70 | { |
71 | getppid_ppid = atoi (ppid); | |
72 | } | |
73 | ||
177c0ea7 | 74 | if (!getppid_parent) |
95ed0025 | 75 | { |
7c3320d8 | 76 | getppid_parent = OpenProcess (SYNCHRONIZE, FALSE, atoi (ppid)); |
177c0ea7 | 77 | if (!getppid_parent) |
95ed0025 RS |
78 | { |
79 | printf ("Failed to open handle to parent process: %d\n", | |
7c3320d8 | 80 | GetLastError ()); |
95ed0025 RS |
81 | exit (1); |
82 | } | |
83 | } | |
84 | ||
85 | result = WaitForSingleObject (getppid_parent, 0); | |
177c0ea7 | 86 | switch (result) |
95ed0025 RS |
87 | { |
88 | case WAIT_TIMEOUT: | |
89 | /* The parent is still alive. */ | |
90 | return getppid_ppid; | |
91 | case WAIT_OBJECT_0: | |
92 | /* The parent is gone. Return the pid of Unix init (1). */ | |
93 | return 1; | |
94 | case WAIT_FAILED: | |
95 | default: | |
7c3320d8 | 96 | printf ("Checking parent status failed: %d\n", GetLastError ()); |
95ed0025 RS |
97 | exit (1); |
98 | } | |
99 | } | |
14f29224 GV |
100 | |
101 | char * | |
7c3320d8 | 102 | getlogin (void) |
14f29224 GV |
103 | { |
104 | static char user_name[256]; | |
105 | DWORD length = sizeof (user_name); | |
106 | ||
107 | if (GetUserName (user_name, &length)) | |
108 | return user_name; | |
109 | return NULL; | |
110 | } | |
111 | ||
112 | char * | |
113 | cuserid (char * s) | |
114 | { | |
115 | char * name = getlogin (); | |
116 | if (s) | |
117 | return strcpy (s, name ? name : ""); | |
118 | return name; | |
119 | } | |
120 | ||
22749e9a | 121 | unsigned |
7c3320d8 | 122 | getuid (void) |
14f29224 GV |
123 | { |
124 | return 0; | |
125 | } | |
126 | ||
b372fceb | 127 | unsigned |
7c3320d8 | 128 | getgid (void) |
b372fceb JB |
129 | { |
130 | return 0; | |
131 | } | |
132 | ||
133 | unsigned | |
7c3320d8 | 134 | getegid (void) |
b372fceb JB |
135 | { |
136 | return 0; | |
137 | } | |
138 | ||
14f29224 | 139 | int |
22749e9a | 140 | setuid (unsigned uid) |
14f29224 GV |
141 | { |
142 | return 0; | |
143 | } | |
144 | ||
b372fceb JB |
145 | int |
146 | setegid (unsigned gid) | |
147 | { | |
148 | return 0; | |
149 | } | |
150 | ||
14f29224 | 151 | struct passwd * |
22749e9a | 152 | getpwuid (unsigned uid) |
14f29224 GV |
153 | { |
154 | return NULL; | |
155 | } | |
156 | ||
157 | char * | |
158 | getpass (const char * prompt) | |
159 | { | |
160 | static char input[256]; | |
161 | HANDLE in; | |
162 | HANDLE err; | |
163 | DWORD count; | |
164 | ||
165 | in = GetStdHandle (STD_INPUT_HANDLE); | |
166 | err = GetStdHandle (STD_ERROR_HANDLE); | |
167 | ||
168 | if (in == INVALID_HANDLE_VALUE || err == INVALID_HANDLE_VALUE) | |
169 | return NULL; | |
170 | ||
171 | if (WriteFile (err, prompt, strlen (prompt), &count, NULL)) | |
172 | { | |
173 | int istty = (GetFileType (in) == FILE_TYPE_CHAR); | |
174 | DWORD old_flags; | |
175 | int rc; | |
176 | ||
177 | if (istty) | |
178 | { | |
179 | if (GetConsoleMode (in, &old_flags)) | |
180 | SetConsoleMode (in, ENABLE_LINE_INPUT | ENABLE_PROCESSED_INPUT); | |
181 | else | |
182 | istty = 0; | |
183 | } | |
184 | rc = ReadFile (in, input, sizeof (input), &count, NULL); | |
185 | if (count >= 2 && input[count - 2] == '\r') | |
186 | input[count - 2] = '\0'; | |
187 | else | |
188 | { | |
189 | char buf[256]; | |
190 | while (ReadFile (in, buf, sizeof (buf), &count, NULL) > 0) | |
191 | if (count >= 2 && buf[count - 2] == '\r') | |
192 | break; | |
193 | } | |
194 | WriteFile (err, "\r\n", 2, &count, NULL); | |
195 | if (istty) | |
196 | SetConsoleMode (in, old_flags); | |
197 | if (rc) | |
198 | return input; | |
199 | } | |
200 | ||
201 | return NULL; | |
202 | } | |
203 | ||
204 | int | |
22749e9a | 205 | fchown (int fd, unsigned uid, unsigned gid) |
14f29224 GV |
206 | { |
207 | return 0; | |
208 | } | |
209 | ||
210 | /* Place a wrapper around the MSVC version of ctime. It returns NULL | |
177c0ea7 | 211 | on network directories, so we handle that case here. |
14f29224 GV |
212 | (Ulrich Leodolter, 1/11/95). */ |
213 | char * | |
214 | sys_ctime (const time_t *t) | |
215 | { | |
216 | char *str = (char *) ctime (t); | |
217 | return (str ? str : "Sun Jan 01 00:00:00 1970"); | |
218 | } | |
219 | ||
220 | FILE * | |
7c3320d8 | 221 | sys_fopen (const char * path, const char * mode) |
14f29224 GV |
222 | { |
223 | return fopen (path, mode); | |
224 | } | |
225 | ||
226 | int | |
227 | sys_chdir (const char * path) | |
228 | { | |
229 | return _chdir (path); | |
230 | } | |
ab5796a9 | 231 | |
10fea9c4 EZ |
232 | static FILETIME utc_base_ft; |
233 | static long double utc_base; | |
234 | static int init = 0; | |
235 | ||
236 | static time_t | |
237 | convert_time (FILETIME ft) | |
238 | { | |
239 | long double ret; | |
240 | ||
241 | if (CompareFileTime (&ft, &utc_base_ft) < 0) | |
242 | return 0; | |
243 | ||
244 | ret = (long double) ft.dwHighDateTime | |
245 | * 4096.0L * 1024.0L * 1024.0L + ft.dwLowDateTime; | |
246 | ret -= utc_base; | |
247 | return (time_t) (ret * 1e-7L); | |
248 | } | |
249 | ||
250 | static int | |
251 | is_exec (const char * name) | |
252 | { | |
253 | char * p = strrchr (name, '.'); | |
254 | return | |
255 | (p != NULL | |
256 | && (stricmp (p, ".exe") == 0 || | |
257 | stricmp (p, ".com") == 0 || | |
258 | stricmp (p, ".bat") == 0 || | |
259 | stricmp (p, ".cmd") == 0)); | |
260 | } | |
261 | ||
262 | #define IS_DIRECTORY_SEP(x) ((x) == '/' || (x) == '\\') | |
263 | ||
264 | /* We need this because nt/inc/sys/stat.h defines struct stat that is | |
265 | incompatible with the MS run-time libraries. */ | |
266 | int | |
267 | stat (const char * path, struct stat * buf) | |
268 | { | |
269 | WIN32_FIND_DATA wfd; | |
270 | HANDLE fh; | |
271 | int permission; | |
272 | int len; | |
273 | int rootdir = FALSE; | |
274 | char *name = alloca (FILENAME_MAX); | |
275 | ||
276 | if (!init) | |
277 | { | |
278 | /* Determine the delta between 1-Jan-1601 and 1-Jan-1970. */ | |
279 | SYSTEMTIME st; | |
280 | ||
281 | st.wYear = 1970; | |
282 | st.wMonth = 1; | |
283 | st.wDay = 1; | |
284 | st.wHour = 0; | |
285 | st.wMinute = 0; | |
286 | st.wSecond = 0; | |
287 | st.wMilliseconds = 0; | |
288 | ||
289 | SystemTimeToFileTime (&st, &utc_base_ft); | |
290 | utc_base = (long double) utc_base_ft.dwHighDateTime | |
291 | * 4096.0L * 1024.0L * 1024.0L + utc_base_ft.dwLowDateTime; | |
292 | init = 1; | |
293 | } | |
294 | ||
295 | if (path == NULL || buf == NULL || *path == '\0') | |
296 | { | |
297 | errno = EFAULT; | |
298 | return -1; | |
299 | } | |
300 | if (_mbspbrk (path, "*?|<>\"")) | |
301 | { | |
302 | errno = ENOENT; | |
303 | return -1; | |
304 | } | |
305 | ||
306 | strcpy (name, path); | |
307 | /* Remove trailing directory separator, unless name is the root | |
308 | directory of a drive in which case ensure there is a trailing | |
309 | separator. */ | |
310 | len = strlen (name); | |
311 | rootdir = IS_DIRECTORY_SEP (name[0]) | |
312 | || (len == 3 && name[1] == ':' && IS_DIRECTORY_SEP (name[2])); | |
313 | if (rootdir) | |
314 | { | |
315 | if (GetDriveType (name) < 2) | |
316 | { | |
317 | errno = ENOENT; | |
318 | return -1; | |
319 | } | |
320 | memset (&wfd, 0, sizeof (wfd)); | |
321 | wfd.dwFileAttributes = FILE_ATTRIBUTE_DIRECTORY; | |
322 | wfd.ftCreationTime = utc_base_ft; | |
323 | wfd.ftLastAccessTime = utc_base_ft; | |
324 | wfd.ftLastWriteTime = utc_base_ft; | |
325 | strcpy (wfd.cFileName, name); | |
326 | } | |
327 | else | |
328 | { | |
329 | if (IS_DIRECTORY_SEP (name[len-1])) | |
330 | name[len - 1] = 0; | |
331 | ||
332 | fh = FindFirstFile (name, &wfd); | |
333 | if (fh == INVALID_HANDLE_VALUE) | |
334 | { | |
335 | errno = ENOENT; | |
336 | return -1; | |
337 | } | |
338 | FindClose (fh); | |
339 | } | |
340 | buf->st_mode = (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) ? | |
341 | S_IFDIR : S_IFREG; | |
342 | buf->st_nlink = 1; | |
343 | buf->st_ino = 0; | |
344 | ||
345 | if (name[0] && name[1] == ':') | |
346 | buf->st_dev = tolower (name[0]) - 'a' + 1; | |
347 | else | |
348 | buf->st_dev = _getdrive (); | |
349 | buf->st_rdev = buf->st_dev; | |
350 | ||
351 | buf->st_size = wfd.nFileSizeLow; | |
352 | ||
353 | /* Convert timestamps to Unix format. */ | |
354 | buf->st_mtime = convert_time (wfd.ftLastWriteTime); | |
355 | buf->st_atime = convert_time (wfd.ftLastAccessTime); | |
356 | if (buf->st_atime == 0) buf->st_atime = buf->st_mtime; | |
357 | buf->st_ctime = convert_time (wfd.ftCreationTime); | |
358 | if (buf->st_ctime == 0) buf->st_ctime = buf->st_mtime; | |
359 | ||
360 | /* determine rwx permissions */ | |
361 | if (wfd.dwFileAttributes & FILE_ATTRIBUTE_READONLY) | |
362 | permission = S_IREAD; | |
363 | else | |
364 | permission = S_IREAD | S_IWRITE; | |
365 | ||
366 | if (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) | |
367 | permission |= S_IEXEC; | |
368 | else if (is_exec (name)) | |
369 | permission |= S_IEXEC; | |
370 | ||
371 | buf->st_mode |= permission | (permission >> 3) | (permission >> 6); | |
372 | ||
373 | return 0; | |
374 | } | |
375 |