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Commit | Line | Data |
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f4626df5 | 1 | #include "../git-compat-util.h" |
444dc903 | 2 | #include "win32.h" |
7e5d7768 | 3 | #include "../strbuf.h" |
f4626df5 JS |
4 | |
5 | unsigned int _CRT_fmode = _O_BINARY; | |
6 | ||
b3debd2b PK |
7 | static int err_win_to_posix(DWORD winerr) |
8 | { | |
9 | int error = ENOSYS; | |
10 | switch(winerr) { | |
11 | case ERROR_ACCESS_DENIED: error = EACCES; break; | |
12 | case ERROR_ACCOUNT_DISABLED: error = EACCES; break; | |
13 | case ERROR_ACCOUNT_RESTRICTION: error = EACCES; break; | |
14 | case ERROR_ALREADY_ASSIGNED: error = EBUSY; break; | |
15 | case ERROR_ALREADY_EXISTS: error = EEXIST; break; | |
16 | case ERROR_ARITHMETIC_OVERFLOW: error = ERANGE; break; | |
17 | case ERROR_BAD_COMMAND: error = EIO; break; | |
18 | case ERROR_BAD_DEVICE: error = ENODEV; break; | |
19 | case ERROR_BAD_DRIVER_LEVEL: error = ENXIO; break; | |
20 | case ERROR_BAD_EXE_FORMAT: error = ENOEXEC; break; | |
21 | case ERROR_BAD_FORMAT: error = ENOEXEC; break; | |
22 | case ERROR_BAD_LENGTH: error = EINVAL; break; | |
23 | case ERROR_BAD_PATHNAME: error = ENOENT; break; | |
24 | case ERROR_BAD_PIPE: error = EPIPE; break; | |
25 | case ERROR_BAD_UNIT: error = ENODEV; break; | |
26 | case ERROR_BAD_USERNAME: error = EINVAL; break; | |
27 | case ERROR_BROKEN_PIPE: error = EPIPE; break; | |
28 | case ERROR_BUFFER_OVERFLOW: error = ENAMETOOLONG; break; | |
29 | case ERROR_BUSY: error = EBUSY; break; | |
30 | case ERROR_BUSY_DRIVE: error = EBUSY; break; | |
31 | case ERROR_CALL_NOT_IMPLEMENTED: error = ENOSYS; break; | |
32 | case ERROR_CANNOT_MAKE: error = EACCES; break; | |
33 | case ERROR_CANTOPEN: error = EIO; break; | |
34 | case ERROR_CANTREAD: error = EIO; break; | |
35 | case ERROR_CANTWRITE: error = EIO; break; | |
36 | case ERROR_CRC: error = EIO; break; | |
37 | case ERROR_CURRENT_DIRECTORY: error = EACCES; break; | |
38 | case ERROR_DEVICE_IN_USE: error = EBUSY; break; | |
39 | case ERROR_DEV_NOT_EXIST: error = ENODEV; break; | |
40 | case ERROR_DIRECTORY: error = EINVAL; break; | |
41 | case ERROR_DIR_NOT_EMPTY: error = ENOTEMPTY; break; | |
42 | case ERROR_DISK_CHANGE: error = EIO; break; | |
43 | case ERROR_DISK_FULL: error = ENOSPC; break; | |
44 | case ERROR_DRIVE_LOCKED: error = EBUSY; break; | |
45 | case ERROR_ENVVAR_NOT_FOUND: error = EINVAL; break; | |
46 | case ERROR_EXE_MARKED_INVALID: error = ENOEXEC; break; | |
47 | case ERROR_FILENAME_EXCED_RANGE: error = ENAMETOOLONG; break; | |
48 | case ERROR_FILE_EXISTS: error = EEXIST; break; | |
49 | case ERROR_FILE_INVALID: error = ENODEV; break; | |
50 | case ERROR_FILE_NOT_FOUND: error = ENOENT; break; | |
51 | case ERROR_GEN_FAILURE: error = EIO; break; | |
52 | case ERROR_HANDLE_DISK_FULL: error = ENOSPC; break; | |
53 | case ERROR_INSUFFICIENT_BUFFER: error = ENOMEM; break; | |
54 | case ERROR_INVALID_ACCESS: error = EACCES; break; | |
55 | case ERROR_INVALID_ADDRESS: error = EFAULT; break; | |
56 | case ERROR_INVALID_BLOCK: error = EFAULT; break; | |
57 | case ERROR_INVALID_DATA: error = EINVAL; break; | |
58 | case ERROR_INVALID_DRIVE: error = ENODEV; break; | |
59 | case ERROR_INVALID_EXE_SIGNATURE: error = ENOEXEC; break; | |
60 | case ERROR_INVALID_FLAGS: error = EINVAL; break; | |
61 | case ERROR_INVALID_FUNCTION: error = ENOSYS; break; | |
62 | case ERROR_INVALID_HANDLE: error = EBADF; break; | |
63 | case ERROR_INVALID_LOGON_HOURS: error = EACCES; break; | |
64 | case ERROR_INVALID_NAME: error = EINVAL; break; | |
65 | case ERROR_INVALID_OWNER: error = EINVAL; break; | |
66 | case ERROR_INVALID_PARAMETER: error = EINVAL; break; | |
67 | case ERROR_INVALID_PASSWORD: error = EPERM; break; | |
68 | case ERROR_INVALID_PRIMARY_GROUP: error = EINVAL; break; | |
69 | case ERROR_INVALID_SIGNAL_NUMBER: error = EINVAL; break; | |
70 | case ERROR_INVALID_TARGET_HANDLE: error = EIO; break; | |
71 | case ERROR_INVALID_WORKSTATION: error = EACCES; break; | |
72 | case ERROR_IO_DEVICE: error = EIO; break; | |
73 | case ERROR_IO_INCOMPLETE: error = EINTR; break; | |
74 | case ERROR_LOCKED: error = EBUSY; break; | |
75 | case ERROR_LOCK_VIOLATION: error = EACCES; break; | |
76 | case ERROR_LOGON_FAILURE: error = EACCES; break; | |
77 | case ERROR_MAPPED_ALIGNMENT: error = EINVAL; break; | |
78 | case ERROR_META_EXPANSION_TOO_LONG: error = E2BIG; break; | |
79 | case ERROR_MORE_DATA: error = EPIPE; break; | |
80 | case ERROR_NEGATIVE_SEEK: error = ESPIPE; break; | |
81 | case ERROR_NOACCESS: error = EFAULT; break; | |
82 | case ERROR_NONE_MAPPED: error = EINVAL; break; | |
83 | case ERROR_NOT_ENOUGH_MEMORY: error = ENOMEM; break; | |
84 | case ERROR_NOT_READY: error = EAGAIN; break; | |
85 | case ERROR_NOT_SAME_DEVICE: error = EXDEV; break; | |
86 | case ERROR_NO_DATA: error = EPIPE; break; | |
87 | case ERROR_NO_MORE_SEARCH_HANDLES: error = EIO; break; | |
88 | case ERROR_NO_PROC_SLOTS: error = EAGAIN; break; | |
89 | case ERROR_NO_SUCH_PRIVILEGE: error = EACCES; break; | |
90 | case ERROR_OPEN_FAILED: error = EIO; break; | |
91 | case ERROR_OPEN_FILES: error = EBUSY; break; | |
92 | case ERROR_OPERATION_ABORTED: error = EINTR; break; | |
93 | case ERROR_OUTOFMEMORY: error = ENOMEM; break; | |
94 | case ERROR_PASSWORD_EXPIRED: error = EACCES; break; | |
95 | case ERROR_PATH_BUSY: error = EBUSY; break; | |
96 | case ERROR_PATH_NOT_FOUND: error = ENOENT; break; | |
97 | case ERROR_PIPE_BUSY: error = EBUSY; break; | |
98 | case ERROR_PIPE_CONNECTED: error = EPIPE; break; | |
99 | case ERROR_PIPE_LISTENING: error = EPIPE; break; | |
100 | case ERROR_PIPE_NOT_CONNECTED: error = EPIPE; break; | |
101 | case ERROR_PRIVILEGE_NOT_HELD: error = EACCES; break; | |
102 | case ERROR_READ_FAULT: error = EIO; break; | |
103 | case ERROR_SEEK: error = EIO; break; | |
104 | case ERROR_SEEK_ON_DEVICE: error = ESPIPE; break; | |
105 | case ERROR_SHARING_BUFFER_EXCEEDED: error = ENFILE; break; | |
106 | case ERROR_SHARING_VIOLATION: error = EACCES; break; | |
107 | case ERROR_STACK_OVERFLOW: error = ENOMEM; break; | |
108 | case ERROR_SWAPERROR: error = ENOENT; break; | |
109 | case ERROR_TOO_MANY_MODULES: error = EMFILE; break; | |
110 | case ERROR_TOO_MANY_OPEN_FILES: error = EMFILE; break; | |
111 | case ERROR_UNRECOGNIZED_MEDIA: error = ENXIO; break; | |
112 | case ERROR_UNRECOGNIZED_VOLUME: error = ENODEV; break; | |
113 | case ERROR_WAIT_NO_CHILDREN: error = ECHILD; break; | |
114 | case ERROR_WRITE_FAULT: error = EIO; break; | |
115 | case ERROR_WRITE_PROTECT: error = EROFS; break; | |
116 | } | |
117 | return error; | |
118 | } | |
119 | ||
3e4a1ba0 JS |
120 | #undef open |
121 | int mingw_open (const char *filename, int oflags, ...) | |
122 | { | |
123 | va_list args; | |
124 | unsigned mode; | |
125 | va_start(args, oflags); | |
126 | mode = va_arg(args, int); | |
127 | va_end(args); | |
128 | ||
129 | if (!strcmp(filename, "/dev/null")) | |
130 | filename = "nul"; | |
131 | int fd = open(filename, oflags, mode); | |
132 | if (fd < 0 && (oflags & O_CREAT) && errno == EACCES) { | |
133 | DWORD attrs = GetFileAttributes(filename); | |
134 | if (attrs != INVALID_FILE_ATTRIBUTES && (attrs & FILE_ATTRIBUTE_DIRECTORY)) | |
135 | errno = EISDIR; | |
136 | } | |
137 | return fd; | |
138 | } | |
139 | ||
5411bdc4 MSO |
140 | static inline time_t filetime_to_time_t(const FILETIME *ft) |
141 | { | |
142 | long long winTime = ((long long)ft->dwHighDateTime << 32) + ft->dwLowDateTime; | |
143 | winTime -= 116444736000000000LL; /* Windows to Unix Epoch conversion */ | |
144 | winTime /= 10000000; /* Nano to seconds resolution */ | |
145 | return (time_t)winTime; | |
146 | } | |
147 | ||
5411bdc4 MSO |
148 | /* We keep the do_lstat code in a separate function to avoid recursion. |
149 | * When a path ends with a slash, the stat will fail with ENOENT. In | |
150 | * this case, we strip the trailing slashes and stat again. | |
151 | */ | |
152 | static int do_lstat(const char *file_name, struct stat *buf) | |
153 | { | |
154 | WIN32_FILE_ATTRIBUTE_DATA fdata; | |
155 | ||
444dc903 | 156 | if (!(errno = get_file_attr(file_name, &fdata))) { |
5411bdc4 MSO |
157 | buf->st_ino = 0; |
158 | buf->st_gid = 0; | |
159 | buf->st_uid = 0; | |
180964f0 | 160 | buf->st_nlink = 1; |
444dc903 | 161 | buf->st_mode = file_attr_to_st_mode(fdata.dwFileAttributes); |
1d4e4cd4 JS |
162 | buf->st_size = fdata.nFileSizeLow | |
163 | (((off_t)fdata.nFileSizeHigh)<<32); | |
8252df62 | 164 | buf->st_dev = buf->st_rdev = 0; /* not used by Git */ |
5411bdc4 MSO |
165 | buf->st_atime = filetime_to_time_t(&(fdata.ftLastAccessTime)); |
166 | buf->st_mtime = filetime_to_time_t(&(fdata.ftLastWriteTime)); | |
167 | buf->st_ctime = filetime_to_time_t(&(fdata.ftCreationTime)); | |
5411bdc4 MSO |
168 | return 0; |
169 | } | |
5411bdc4 MSO |
170 | return -1; |
171 | } | |
172 | ||
173 | /* We provide our own lstat/fstat functions, since the provided | |
174 | * lstat/fstat functions are so slow. These stat functions are | |
175 | * tailored for Git's usage (read: fast), and are not meant to be | |
176 | * complete. Note that Git stat()s are redirected to mingw_lstat() | |
177 | * too, since Windows doesn't really handle symlinks that well. | |
178 | */ | |
180964f0 | 179 | int mingw_lstat(const char *file_name, struct stat *buf) |
5411bdc4 MSO |
180 | { |
181 | int namelen; | |
182 | static char alt_name[PATH_MAX]; | |
183 | ||
184 | if (!do_lstat(file_name, buf)) | |
185 | return 0; | |
186 | ||
187 | /* if file_name ended in a '/', Windows returned ENOENT; | |
188 | * try again without trailing slashes | |
189 | */ | |
190 | if (errno != ENOENT) | |
191 | return -1; | |
192 | ||
193 | namelen = strlen(file_name); | |
194 | if (namelen && file_name[namelen-1] != '/') | |
195 | return -1; | |
196 | while (namelen && file_name[namelen-1] == '/') | |
197 | --namelen; | |
198 | if (!namelen || namelen >= PATH_MAX) | |
199 | return -1; | |
200 | ||
201 | memcpy(alt_name, file_name, namelen); | |
202 | alt_name[namelen] = 0; | |
203 | return do_lstat(alt_name, buf); | |
204 | } | |
205 | ||
206 | #undef fstat | |
180964f0 | 207 | int mingw_fstat(int fd, struct stat *buf) |
5411bdc4 MSO |
208 | { |
209 | HANDLE fh = (HANDLE)_get_osfhandle(fd); | |
210 | BY_HANDLE_FILE_INFORMATION fdata; | |
211 | ||
212 | if (fh == INVALID_HANDLE_VALUE) { | |
213 | errno = EBADF; | |
214 | return -1; | |
215 | } | |
216 | /* direct non-file handles to MS's fstat() */ | |
180964f0 | 217 | if (GetFileType(fh) != FILE_TYPE_DISK) |
1d4e4cd4 | 218 | return _fstati64(fd, buf); |
5411bdc4 MSO |
219 | |
220 | if (GetFileInformationByHandle(fh, &fdata)) { | |
5411bdc4 MSO |
221 | buf->st_ino = 0; |
222 | buf->st_gid = 0; | |
223 | buf->st_uid = 0; | |
180964f0 | 224 | buf->st_nlink = 1; |
444dc903 | 225 | buf->st_mode = file_attr_to_st_mode(fdata.dwFileAttributes); |
1d4e4cd4 JS |
226 | buf->st_size = fdata.nFileSizeLow | |
227 | (((off_t)fdata.nFileSizeHigh)<<32); | |
8252df62 | 228 | buf->st_dev = buf->st_rdev = 0; /* not used by Git */ |
5411bdc4 MSO |
229 | buf->st_atime = filetime_to_time_t(&(fdata.ftLastAccessTime)); |
230 | buf->st_mtime = filetime_to_time_t(&(fdata.ftLastWriteTime)); | |
231 | buf->st_ctime = filetime_to_time_t(&(fdata.ftCreationTime)); | |
232 | return 0; | |
233 | } | |
234 | errno = EBADF; | |
235 | return -1; | |
236 | } | |
237 | ||
7c0ffa1c JS |
238 | static inline void time_t_to_filetime(time_t t, FILETIME *ft) |
239 | { | |
240 | long long winTime = t * 10000000LL + 116444736000000000LL; | |
241 | ft->dwLowDateTime = winTime; | |
242 | ft->dwHighDateTime = winTime >> 32; | |
243 | } | |
244 | ||
245 | int mingw_utime (const char *file_name, const struct utimbuf *times) | |
246 | { | |
247 | FILETIME mft, aft; | |
248 | int fh, rc; | |
249 | ||
250 | /* must have write permission */ | |
251 | if ((fh = open(file_name, O_RDWR | O_BINARY)) < 0) | |
252 | return -1; | |
253 | ||
254 | time_t_to_filetime(times->modtime, &mft); | |
255 | time_t_to_filetime(times->actime, &aft); | |
256 | if (!SetFileTime((HANDLE)_get_osfhandle(fh), NULL, &aft, &mft)) { | |
257 | errno = EINVAL; | |
258 | rc = -1; | |
259 | } else | |
260 | rc = 0; | |
261 | close(fh); | |
262 | return rc; | |
263 | } | |
264 | ||
f4626df5 JS |
265 | unsigned int sleep (unsigned int seconds) |
266 | { | |
267 | Sleep(seconds*1000); | |
268 | return 0; | |
269 | } | |
270 | ||
271 | int mkstemp(char *template) | |
272 | { | |
273 | char *filename = mktemp(template); | |
274 | if (filename == NULL) | |
275 | return -1; | |
276 | return open(filename, O_RDWR | O_CREAT, 0600); | |
277 | } | |
278 | ||
279 | int gettimeofday(struct timeval *tv, void *tz) | |
280 | { | |
a42a0c2e JS |
281 | SYSTEMTIME st; |
282 | struct tm tm; | |
283 | GetSystemTime(&st); | |
284 | tm.tm_year = st.wYear-1900; | |
285 | tm.tm_mon = st.wMonth-1; | |
286 | tm.tm_mday = st.wDay; | |
287 | tm.tm_hour = st.wHour; | |
288 | tm.tm_min = st.wMinute; | |
289 | tm.tm_sec = st.wSecond; | |
290 | tv->tv_sec = tm_to_time_t(&tm); | |
291 | if (tv->tv_sec < 0) | |
292 | return -1; | |
293 | tv->tv_usec = st.wMilliseconds*1000; | |
294 | return 0; | |
f4626df5 JS |
295 | } |
296 | ||
897bb8cb JS |
297 | int pipe(int filedes[2]) |
298 | { | |
299 | int fd; | |
300 | HANDLE h[2], parent; | |
301 | ||
302 | if (_pipe(filedes, 8192, 0) < 0) | |
303 | return -1; | |
304 | ||
305 | parent = GetCurrentProcess(); | |
306 | ||
307 | if (!DuplicateHandle (parent, (HANDLE)_get_osfhandle(filedes[0]), | |
308 | parent, &h[0], 0, FALSE, DUPLICATE_SAME_ACCESS)) { | |
309 | close(filedes[0]); | |
310 | close(filedes[1]); | |
311 | return -1; | |
312 | } | |
313 | if (!DuplicateHandle (parent, (HANDLE)_get_osfhandle(filedes[1]), | |
314 | parent, &h[1], 0, FALSE, DUPLICATE_SAME_ACCESS)) { | |
315 | close(filedes[0]); | |
316 | close(filedes[1]); | |
317 | CloseHandle(h[0]); | |
318 | return -1; | |
319 | } | |
320 | fd = _open_osfhandle((int)h[0], O_NOINHERIT); | |
321 | if (fd < 0) { | |
322 | close(filedes[0]); | |
323 | close(filedes[1]); | |
324 | CloseHandle(h[0]); | |
325 | CloseHandle(h[1]); | |
326 | return -1; | |
327 | } | |
328 | close(filedes[0]); | |
329 | filedes[0] = fd; | |
330 | fd = _open_osfhandle((int)h[1], O_NOINHERIT); | |
331 | if (fd < 0) { | |
332 | close(filedes[0]); | |
333 | close(filedes[1]); | |
334 | CloseHandle(h[1]); | |
335 | return -1; | |
336 | } | |
337 | close(filedes[1]); | |
338 | filedes[1] = fd; | |
339 | return 0; | |
340 | } | |
341 | ||
f4626df5 JS |
342 | int poll(struct pollfd *ufds, unsigned int nfds, int timeout) |
343 | { | |
6ed807f8 JS |
344 | int i, pending; |
345 | ||
d317851a JS |
346 | if (timeout >= 0) { |
347 | if (nfds == 0) { | |
348 | Sleep(timeout); | |
349 | return 0; | |
350 | } | |
6ed807f8 | 351 | return errno = EINVAL, error("poll timeout not supported"); |
d317851a | 352 | } |
6ed807f8 JS |
353 | |
354 | /* When there is only one fd to wait for, then we pretend that | |
355 | * input is available and let the actual wait happen when the | |
356 | * caller invokes read(). | |
357 | */ | |
358 | if (nfds == 1) { | |
359 | if (!(ufds[0].events & POLLIN)) | |
360 | return errno = EINVAL, error("POLLIN not set"); | |
361 | ufds[0].revents = POLLIN; | |
362 | return 0; | |
363 | } | |
364 | ||
365 | repeat: | |
366 | pending = 0; | |
367 | for (i = 0; i < nfds; i++) { | |
368 | DWORD avail = 0; | |
369 | HANDLE h = (HANDLE) _get_osfhandle(ufds[i].fd); | |
370 | if (h == INVALID_HANDLE_VALUE) | |
371 | return -1; /* errno was set */ | |
372 | ||
373 | if (!(ufds[i].events & POLLIN)) | |
374 | return errno = EINVAL, error("POLLIN not set"); | |
375 | ||
376 | /* this emulation works only for pipes */ | |
377 | if (!PeekNamedPipe(h, NULL, 0, NULL, &avail, NULL)) { | |
378 | int err = GetLastError(); | |
379 | if (err == ERROR_BROKEN_PIPE) { | |
380 | ufds[i].revents = POLLHUP; | |
381 | pending++; | |
382 | } else { | |
383 | errno = EINVAL; | |
384 | return error("PeekNamedPipe failed," | |
385 | " GetLastError: %u", err); | |
386 | } | |
387 | } else if (avail) { | |
388 | ufds[i].revents = POLLIN; | |
389 | pending++; | |
390 | } else | |
391 | ufds[i].revents = 0; | |
392 | } | |
393 | if (!pending) { | |
394 | /* The only times that we spin here is when the process | |
395 | * that is connected through the pipes is waiting for | |
396 | * its own input data to become available. But since | |
397 | * the process (pack-objects) is itself CPU intensive, | |
398 | * it will happily pick up the time slice that we are | |
399 | * relinguishing here. | |
400 | */ | |
401 | Sleep(0); | |
402 | goto repeat; | |
403 | } | |
404 | return 0; | |
f4626df5 JS |
405 | } |
406 | ||
407 | struct tm *gmtime_r(const time_t *timep, struct tm *result) | |
408 | { | |
409 | /* gmtime() in MSVCRT.DLL is thread-safe, but not reentrant */ | |
410 | memcpy(result, gmtime(timep), sizeof(struct tm)); | |
411 | return result; | |
412 | } | |
413 | ||
414 | struct tm *localtime_r(const time_t *timep, struct tm *result) | |
415 | { | |
416 | /* localtime() in MSVCRT.DLL is thread-safe, but not reentrant */ | |
417 | memcpy(result, localtime(timep), sizeof(struct tm)); | |
418 | return result; | |
419 | } | |
420 | ||
25fe217b JS |
421 | #undef getcwd |
422 | char *mingw_getcwd(char *pointer, int len) | |
423 | { | |
424 | int i; | |
425 | char *ret = getcwd(pointer, len); | |
426 | if (!ret) | |
427 | return ret; | |
428 | for (i = 0; pointer[i]; i++) | |
429 | if (pointer[i] == '\\') | |
430 | pointer[i] = '/'; | |
431 | return ret; | |
432 | } | |
433 | ||
6fd6aec4 JS |
434 | #undef getenv |
435 | char *mingw_getenv(const char *name) | |
436 | { | |
437 | char *result = getenv(name); | |
438 | if (!result && !strcmp(name, "TMPDIR")) { | |
439 | /* on Windows it is TMP and TEMP */ | |
440 | result = getenv("TMP"); | |
441 | if (!result) | |
442 | result = getenv("TEMP"); | |
443 | } | |
444 | return result; | |
445 | } | |
446 | ||
7e5d7768 JS |
447 | /* |
448 | * See http://msdn2.microsoft.com/en-us/library/17w5ykft(vs.71).aspx | |
449 | * (Parsing C++ Command-Line Arguments) | |
450 | */ | |
451 | static const char *quote_arg(const char *arg) | |
452 | { | |
453 | /* count chars to quote */ | |
454 | int len = 0, n = 0; | |
455 | int force_quotes = 0; | |
456 | char *q, *d; | |
457 | const char *p = arg; | |
458 | if (!*p) force_quotes = 1; | |
459 | while (*p) { | |
460 | if (isspace(*p) || *p == '*' || *p == '?' || *p == '{') | |
461 | force_quotes = 1; | |
462 | else if (*p == '"') | |
463 | n++; | |
464 | else if (*p == '\\') { | |
465 | int count = 0; | |
466 | while (*p == '\\') { | |
467 | count++; | |
468 | p++; | |
469 | len++; | |
470 | } | |
471 | if (*p == '"') | |
472 | n += count*2 + 1; | |
473 | continue; | |
474 | } | |
475 | len++; | |
476 | p++; | |
477 | } | |
478 | if (!force_quotes && n == 0) | |
479 | return arg; | |
480 | ||
481 | /* insert \ where necessary */ | |
482 | d = q = xmalloc(len+n+3); | |
483 | *d++ = '"'; | |
484 | while (*arg) { | |
485 | if (*arg == '"') | |
486 | *d++ = '\\'; | |
487 | else if (*arg == '\\') { | |
488 | int count = 0; | |
489 | while (*arg == '\\') { | |
490 | count++; | |
491 | *d++ = *arg++; | |
492 | } | |
493 | if (*arg == '"') { | |
494 | while (count-- > 0) | |
495 | *d++ = '\\'; | |
496 | *d++ = '\\'; | |
497 | } | |
498 | } | |
499 | *d++ = *arg++; | |
500 | } | |
501 | *d++ = '"'; | |
502 | *d++ = 0; | |
503 | return q; | |
504 | } | |
505 | ||
f1a4dfb8 JS |
506 | static const char *parse_interpreter(const char *cmd) |
507 | { | |
508 | static char buf[100]; | |
509 | char *p, *opt; | |
510 | int n, fd; | |
511 | ||
512 | /* don't even try a .exe */ | |
513 | n = strlen(cmd); | |
514 | if (n >= 4 && !strcasecmp(cmd+n-4, ".exe")) | |
515 | return NULL; | |
516 | ||
517 | fd = open(cmd, O_RDONLY); | |
518 | if (fd < 0) | |
519 | return NULL; | |
520 | n = read(fd, buf, sizeof(buf)-1); | |
521 | close(fd); | |
522 | if (n < 4) /* at least '#!/x' and not error */ | |
523 | return NULL; | |
524 | ||
525 | if (buf[0] != '#' || buf[1] != '!') | |
526 | return NULL; | |
527 | buf[n] = '\0'; | |
528 | p = strchr(buf, '\n'); | |
529 | if (!p) | |
530 | return NULL; | |
531 | ||
532 | *p = '\0'; | |
533 | if (!(p = strrchr(buf+2, '/')) && !(p = strrchr(buf+2, '\\'))) | |
534 | return NULL; | |
535 | /* strip options */ | |
536 | if ((opt = strchr(p+1, ' '))) | |
537 | *opt = '\0'; | |
538 | return p+1; | |
539 | } | |
540 | ||
541 | /* | |
542 | * Splits the PATH into parts. | |
543 | */ | |
544 | static char **get_path_split(void) | |
545 | { | |
546 | char *p, **path, *envpath = getenv("PATH"); | |
547 | int i, n = 0; | |
548 | ||
549 | if (!envpath || !*envpath) | |
550 | return NULL; | |
551 | ||
552 | envpath = xstrdup(envpath); | |
553 | p = envpath; | |
554 | while (p) { | |
555 | char *dir = p; | |
556 | p = strchr(p, ';'); | |
557 | if (p) *p++ = '\0'; | |
558 | if (*dir) { /* not earlier, catches series of ; */ | |
559 | ++n; | |
560 | } | |
561 | } | |
562 | if (!n) | |
563 | return NULL; | |
564 | ||
565 | path = xmalloc((n+1)*sizeof(char*)); | |
566 | p = envpath; | |
567 | i = 0; | |
568 | do { | |
569 | if (*p) | |
570 | path[i++] = xstrdup(p); | |
571 | p = p+strlen(p)+1; | |
572 | } while (i < n); | |
573 | path[i] = NULL; | |
574 | ||
575 | free(envpath); | |
576 | ||
577 | return path; | |
578 | } | |
579 | ||
580 | static void free_path_split(char **path) | |
581 | { | |
582 | if (!path) | |
583 | return; | |
584 | ||
585 | char **p = path; | |
586 | while (*p) | |
587 | free(*p++); | |
588 | free(path); | |
589 | } | |
590 | ||
591 | /* | |
592 | * exe_only means that we only want to detect .exe files, but not scripts | |
593 | * (which do not have an extension) | |
594 | */ | |
595 | static char *lookup_prog(const char *dir, const char *cmd, int isexe, int exe_only) | |
596 | { | |
597 | char path[MAX_PATH]; | |
598 | snprintf(path, sizeof(path), "%s/%s.exe", dir, cmd); | |
599 | ||
600 | if (!isexe && access(path, F_OK) == 0) | |
601 | return xstrdup(path); | |
602 | path[strlen(path)-4] = '\0'; | |
603 | if ((!exe_only || isexe) && access(path, F_OK) == 0) | |
fe77b695 ER |
604 | if (!(GetFileAttributes(path) & FILE_ATTRIBUTE_DIRECTORY)) |
605 | return xstrdup(path); | |
f1a4dfb8 JS |
606 | return NULL; |
607 | } | |
608 | ||
609 | /* | |
610 | * Determines the absolute path of cmd using the the split path in path. | |
611 | * If cmd contains a slash or backslash, no lookup is performed. | |
612 | */ | |
613 | static char *path_lookup(const char *cmd, char **path, int exe_only) | |
614 | { | |
615 | char *prog = NULL; | |
616 | int len = strlen(cmd); | |
617 | int isexe = len >= 4 && !strcasecmp(cmd+len-4, ".exe"); | |
618 | ||
619 | if (strchr(cmd, '/') || strchr(cmd, '\\')) | |
620 | prog = xstrdup(cmd); | |
621 | ||
622 | while (!prog && *path) | |
623 | prog = lookup_prog(*path++, cmd, isexe, exe_only); | |
624 | ||
625 | return prog; | |
626 | } | |
627 | ||
7e5d7768 JS |
628 | static int env_compare(const void *a, const void *b) |
629 | { | |
630 | char *const *ea = a; | |
631 | char *const *eb = b; | |
632 | return strcasecmp(*ea, *eb); | |
633 | } | |
634 | ||
635 | static pid_t mingw_spawnve(const char *cmd, const char **argv, char **env, | |
636 | int prepend_cmd) | |
637 | { | |
638 | STARTUPINFO si; | |
639 | PROCESS_INFORMATION pi; | |
640 | struct strbuf envblk, args; | |
641 | unsigned flags; | |
642 | BOOL ret; | |
643 | ||
644 | /* Determine whether or not we are associated to a console */ | |
645 | HANDLE cons = CreateFile("CONOUT$", GENERIC_WRITE, | |
646 | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, | |
647 | FILE_ATTRIBUTE_NORMAL, NULL); | |
648 | if (cons == INVALID_HANDLE_VALUE) { | |
649 | /* There is no console associated with this process. | |
650 | * Since the child is a console process, Windows | |
651 | * would normally create a console window. But | |
652 | * since we'll be redirecting std streams, we do | |
653 | * not need the console. | |
19fb896f AG |
654 | * It is necessary to use DETACHED_PROCESS |
655 | * instead of CREATE_NO_WINDOW to make ssh | |
656 | * recognize that it has no console. | |
7e5d7768 | 657 | */ |
19fb896f | 658 | flags = DETACHED_PROCESS; |
7e5d7768 JS |
659 | } else { |
660 | /* There is already a console. If we specified | |
19fb896f | 661 | * DETACHED_PROCESS here, too, Windows would |
7e5d7768 | 662 | * disassociate the child from the console. |
19fb896f | 663 | * The same is true for CREATE_NO_WINDOW. |
7e5d7768 JS |
664 | * Go figure! |
665 | */ | |
666 | flags = 0; | |
667 | CloseHandle(cons); | |
668 | } | |
669 | memset(&si, 0, sizeof(si)); | |
670 | si.cb = sizeof(si); | |
671 | si.dwFlags = STARTF_USESTDHANDLES; | |
672 | si.hStdInput = (HANDLE) _get_osfhandle(0); | |
673 | si.hStdOutput = (HANDLE) _get_osfhandle(1); | |
674 | si.hStdError = (HANDLE) _get_osfhandle(2); | |
675 | ||
676 | /* concatenate argv, quoting args as we go */ | |
677 | strbuf_init(&args, 0); | |
678 | if (prepend_cmd) { | |
679 | char *quoted = (char *)quote_arg(cmd); | |
680 | strbuf_addstr(&args, quoted); | |
681 | if (quoted != cmd) | |
682 | free(quoted); | |
683 | } | |
684 | for (; *argv; argv++) { | |
685 | char *quoted = (char *)quote_arg(*argv); | |
686 | if (*args.buf) | |
687 | strbuf_addch(&args, ' '); | |
688 | strbuf_addstr(&args, quoted); | |
689 | if (quoted != *argv) | |
690 | free(quoted); | |
691 | } | |
692 | ||
693 | if (env) { | |
694 | int count = 0; | |
695 | char **e, **sorted_env; | |
696 | ||
697 | for (e = env; *e; e++) | |
698 | count++; | |
699 | ||
700 | /* environment must be sorted */ | |
701 | sorted_env = xmalloc(sizeof(*sorted_env) * (count + 1)); | |
702 | memcpy(sorted_env, env, sizeof(*sorted_env) * (count + 1)); | |
703 | qsort(sorted_env, count, sizeof(*sorted_env), env_compare); | |
704 | ||
705 | strbuf_init(&envblk, 0); | |
706 | for (e = sorted_env; *e; e++) { | |
707 | strbuf_addstr(&envblk, *e); | |
708 | strbuf_addch(&envblk, '\0'); | |
709 | } | |
710 | free(sorted_env); | |
711 | } | |
712 | ||
713 | memset(&pi, 0, sizeof(pi)); | |
714 | ret = CreateProcess(cmd, args.buf, NULL, NULL, TRUE, flags, | |
715 | env ? envblk.buf : NULL, NULL, &si, &pi); | |
716 | ||
717 | if (env) | |
718 | strbuf_release(&envblk); | |
719 | strbuf_release(&args); | |
720 | ||
721 | if (!ret) { | |
722 | errno = ENOENT; | |
723 | return -1; | |
724 | } | |
725 | CloseHandle(pi.hThread); | |
726 | return (pid_t)pi.hProcess; | |
727 | } | |
728 | ||
729 | pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **env) | |
730 | { | |
731 | pid_t pid; | |
732 | char **path = get_path_split(); | |
733 | char *prog = path_lookup(cmd, path, 0); | |
734 | ||
735 | if (!prog) { | |
736 | errno = ENOENT; | |
737 | pid = -1; | |
738 | } | |
739 | else { | |
740 | const char *interpr = parse_interpreter(prog); | |
741 | ||
742 | if (interpr) { | |
743 | const char *argv0 = argv[0]; | |
744 | char *iprog = path_lookup(interpr, path, 1); | |
745 | argv[0] = prog; | |
746 | if (!iprog) { | |
747 | errno = ENOENT; | |
748 | pid = -1; | |
749 | } | |
750 | else { | |
751 | pid = mingw_spawnve(iprog, argv, env, 1); | |
752 | free(iprog); | |
753 | } | |
754 | argv[0] = argv0; | |
755 | } | |
756 | else | |
757 | pid = mingw_spawnve(prog, argv, env, 0); | |
758 | free(prog); | |
759 | } | |
760 | free_path_split(path); | |
761 | return pid; | |
762 | } | |
763 | ||
f1a4dfb8 JS |
764 | static int try_shell_exec(const char *cmd, char *const *argv, char **env) |
765 | { | |
766 | const char *interpr = parse_interpreter(cmd); | |
767 | char **path; | |
768 | char *prog; | |
769 | int pid = 0; | |
770 | ||
771 | if (!interpr) | |
772 | return 0; | |
773 | path = get_path_split(); | |
774 | prog = path_lookup(interpr, path, 1); | |
775 | if (prog) { | |
776 | int argc = 0; | |
777 | const char **argv2; | |
778 | while (argv[argc]) argc++; | |
7e5d7768 JS |
779 | argv2 = xmalloc(sizeof(*argv) * (argc+1)); |
780 | argv2[0] = (char *)cmd; /* full path to the script file */ | |
781 | memcpy(&argv2[1], &argv[1], sizeof(*argv) * argc); | |
782 | pid = mingw_spawnve(prog, argv2, env, 1); | |
f1a4dfb8 JS |
783 | if (pid >= 0) { |
784 | int status; | |
785 | if (waitpid(pid, &status, 0) < 0) | |
786 | status = 255; | |
787 | exit(status); | |
788 | } | |
789 | pid = 1; /* indicate that we tried but failed */ | |
790 | free(prog); | |
791 | free(argv2); | |
792 | } | |
793 | free_path_split(path); | |
794 | return pid; | |
795 | } | |
796 | ||
797 | static void mingw_execve(const char *cmd, char *const *argv, char *const *env) | |
798 | { | |
799 | /* check if git_command is a shell script */ | |
800 | if (!try_shell_exec(cmd, argv, (char **)env)) { | |
801 | int pid, status; | |
802 | ||
7e5d7768 | 803 | pid = mingw_spawnve(cmd, (const char **)argv, (char **)env, 0); |
f1a4dfb8 JS |
804 | if (pid < 0) |
805 | return; | |
806 | if (waitpid(pid, &status, 0) < 0) | |
807 | status = 255; | |
808 | exit(status); | |
809 | } | |
810 | } | |
811 | ||
812 | void mingw_execvp(const char *cmd, char *const *argv) | |
813 | { | |
814 | char **path = get_path_split(); | |
815 | char *prog = path_lookup(cmd, path, 0); | |
816 | ||
817 | if (prog) { | |
818 | mingw_execve(prog, argv, environ); | |
819 | free(prog); | |
820 | } else | |
821 | errno = ENOENT; | |
822 | ||
823 | free_path_split(path); | |
824 | } | |
825 | ||
ba26f296 JS |
826 | char **copy_environ() |
827 | { | |
828 | char **env; | |
829 | int i = 0; | |
830 | while (environ[i]) | |
831 | i++; | |
832 | env = xmalloc((i+1)*sizeof(*env)); | |
833 | for (i = 0; environ[i]; i++) | |
834 | env[i] = xstrdup(environ[i]); | |
835 | env[i] = NULL; | |
836 | return env; | |
837 | } | |
838 | ||
839 | void free_environ(char **env) | |
840 | { | |
841 | int i; | |
842 | for (i = 0; env[i]; i++) | |
843 | free(env[i]); | |
844 | free(env); | |
845 | } | |
846 | ||
847 | static int lookup_env(char **env, const char *name, size_t nmln) | |
848 | { | |
849 | int i; | |
850 | ||
851 | for (i = 0; env[i]; i++) { | |
852 | if (0 == strncmp(env[i], name, nmln) | |
853 | && '=' == env[i][nmln]) | |
854 | /* matches */ | |
855 | return i; | |
856 | } | |
857 | return -1; | |
858 | } | |
859 | ||
860 | /* | |
861 | * If name contains '=', then sets the variable, otherwise it unsets it | |
862 | */ | |
863 | char **env_setenv(char **env, const char *name) | |
864 | { | |
865 | char *eq = strchrnul(name, '='); | |
866 | int i = lookup_env(env, name, eq-name); | |
867 | ||
868 | if (i < 0) { | |
869 | if (*eq) { | |
870 | for (i = 0; env[i]; i++) | |
871 | ; | |
872 | env = xrealloc(env, (i+2)*sizeof(*env)); | |
873 | env[i] = xstrdup(name); | |
874 | env[i+1] = NULL; | |
875 | } | |
876 | } | |
877 | else { | |
878 | free(env[i]); | |
879 | if (*eq) | |
880 | env[i] = xstrdup(name); | |
881 | else | |
882 | for (; env[i]; i++) | |
883 | env[i] = env[i+1]; | |
884 | } | |
885 | return env; | |
886 | } | |
887 | ||
746fb857 JS |
888 | /* this is the first function to call into WS_32; initialize it */ |
889 | #undef gethostbyname | |
890 | struct hostent *mingw_gethostbyname(const char *host) | |
891 | { | |
892 | WSADATA wsa; | |
893 | ||
894 | if (WSAStartup(MAKEWORD(2,2), &wsa)) | |
895 | die("unable to initialize winsock subsystem, error %d", | |
896 | WSAGetLastError()); | |
897 | atexit((void(*)(void)) WSACleanup); | |
898 | return gethostbyname(host); | |
899 | } | |
900 | ||
901 | int mingw_socket(int domain, int type, int protocol) | |
902 | { | |
903 | int sockfd; | |
904 | SOCKET s = WSASocket(domain, type, protocol, NULL, 0, 0); | |
905 | if (s == INVALID_SOCKET) { | |
906 | /* | |
907 | * WSAGetLastError() values are regular BSD error codes | |
908 | * biased by WSABASEERR. | |
909 | * However, strerror() does not know about networking | |
910 | * specific errors, which are values beginning at 38 or so. | |
911 | * Therefore, we choose to leave the biased error code | |
912 | * in errno so that _if_ someone looks up the code somewhere, | |
913 | * then it is at least the number that are usually listed. | |
914 | */ | |
915 | errno = WSAGetLastError(); | |
916 | return -1; | |
917 | } | |
918 | /* convert into a file descriptor */ | |
919 | if ((sockfd = _open_osfhandle(s, O_RDWR|O_BINARY)) < 0) { | |
920 | closesocket(s); | |
921 | return error("unable to make a socket file descriptor: %s", | |
922 | strerror(errno)); | |
923 | } | |
924 | return sockfd; | |
925 | } | |
926 | ||
927 | #undef connect | |
928 | int mingw_connect(int sockfd, struct sockaddr *sa, size_t sz) | |
929 | { | |
930 | SOCKET s = (SOCKET)_get_osfhandle(sockfd); | |
931 | return connect(s, sa, sz); | |
932 | } | |
933 | ||
ea9e98c3 JS |
934 | #undef rename |
935 | int mingw_rename(const char *pold, const char *pnew) | |
936 | { | |
632f7017 JS |
937 | DWORD attrs; |
938 | ||
ea9e98c3 JS |
939 | /* |
940 | * Try native rename() first to get errno right. | |
941 | * It is based on MoveFile(), which cannot overwrite existing files. | |
942 | */ | |
943 | if (!rename(pold, pnew)) | |
944 | return 0; | |
945 | if (errno != EEXIST) | |
946 | return -1; | |
947 | if (MoveFileEx(pold, pnew, MOVEFILE_REPLACE_EXISTING)) | |
948 | return 0; | |
949 | /* TODO: translate more errors */ | |
632f7017 JS |
950 | if (GetLastError() == ERROR_ACCESS_DENIED && |
951 | (attrs = GetFileAttributes(pnew)) != INVALID_FILE_ATTRIBUTES) { | |
952 | if (attrs & FILE_ATTRIBUTE_DIRECTORY) { | |
ea9e98c3 JS |
953 | errno = EISDIR; |
954 | return -1; | |
955 | } | |
632f7017 JS |
956 | if ((attrs & FILE_ATTRIBUTE_READONLY) && |
957 | SetFileAttributes(pnew, attrs & ~FILE_ATTRIBUTE_READONLY)) { | |
958 | if (MoveFileEx(pold, pnew, MOVEFILE_REPLACE_EXISTING)) | |
959 | return 0; | |
960 | /* revert file attributes on failure */ | |
961 | SetFileAttributes(pnew, attrs); | |
962 | } | |
ea9e98c3 JS |
963 | } |
964 | errno = EACCES; | |
965 | return -1; | |
966 | } | |
967 | ||
f4626df5 JS |
968 | struct passwd *getpwuid(int uid) |
969 | { | |
f7597aca | 970 | static char user_name[100]; |
f4626df5 | 971 | static struct passwd p; |
f7597aca JS |
972 | |
973 | DWORD len = sizeof(user_name); | |
974 | if (!GetUserName(user_name, &len)) | |
975 | return NULL; | |
976 | p.pw_name = user_name; | |
977 | p.pw_gecos = "unknown"; | |
978 | p.pw_dir = NULL; | |
f4626df5 JS |
979 | return &p; |
980 | } | |
981 | ||
6072fc31 JS |
982 | static HANDLE timer_event; |
983 | static HANDLE timer_thread; | |
984 | static int timer_interval; | |
985 | static int one_shot; | |
986 | static sig_handler_t timer_fn = SIG_DFL; | |
987 | ||
988 | /* The timer works like this: | |
989 | * The thread, ticktack(), is a trivial routine that most of the time | |
990 | * only waits to receive the signal to terminate. The main thread tells | |
991 | * the thread to terminate by setting the timer_event to the signalled | |
992 | * state. | |
993 | * But ticktack() interrupts the wait state after the timer's interval | |
994 | * length to call the signal handler. | |
995 | */ | |
996 | ||
997 | static __stdcall unsigned ticktack(void *dummy) | |
998 | { | |
999 | while (WaitForSingleObject(timer_event, timer_interval) == WAIT_TIMEOUT) { | |
1000 | if (timer_fn == SIG_DFL) | |
1001 | die("Alarm"); | |
1002 | if (timer_fn != SIG_IGN) | |
1003 | timer_fn(SIGALRM); | |
1004 | if (one_shot) | |
1005 | break; | |
1006 | } | |
1007 | return 0; | |
1008 | } | |
1009 | ||
1010 | static int start_timer_thread(void) | |
1011 | { | |
1012 | timer_event = CreateEvent(NULL, FALSE, FALSE, NULL); | |
1013 | if (timer_event) { | |
1014 | timer_thread = (HANDLE) _beginthreadex(NULL, 0, ticktack, NULL, 0, NULL); | |
1015 | if (!timer_thread ) | |
1016 | return errno = ENOMEM, | |
1017 | error("cannot start timer thread"); | |
1018 | } else | |
1019 | return errno = ENOMEM, | |
1020 | error("cannot allocate resources for timer"); | |
1021 | return 0; | |
1022 | } | |
1023 | ||
1024 | static void stop_timer_thread(void) | |
1025 | { | |
1026 | if (timer_event) | |
1027 | SetEvent(timer_event); /* tell thread to terminate */ | |
1028 | if (timer_thread) { | |
1029 | int rc = WaitForSingleObject(timer_thread, 1000); | |
1030 | if (rc == WAIT_TIMEOUT) | |
1031 | error("timer thread did not terminate timely"); | |
1032 | else if (rc != WAIT_OBJECT_0) | |
1033 | error("waiting for timer thread failed: %lu", | |
1034 | GetLastError()); | |
1035 | CloseHandle(timer_thread); | |
1036 | } | |
1037 | if (timer_event) | |
1038 | CloseHandle(timer_event); | |
1039 | timer_event = NULL; | |
1040 | timer_thread = NULL; | |
1041 | } | |
1042 | ||
1043 | static inline int is_timeval_eq(const struct timeval *i1, const struct timeval *i2) | |
1044 | { | |
1045 | return i1->tv_sec == i2->tv_sec && i1->tv_usec == i2->tv_usec; | |
1046 | } | |
1047 | ||
f4626df5 JS |
1048 | int setitimer(int type, struct itimerval *in, struct itimerval *out) |
1049 | { | |
6072fc31 JS |
1050 | static const struct timeval zero; |
1051 | static int atexit_done; | |
1052 | ||
1053 | if (out != NULL) | |
1054 | return errno = EINVAL, | |
1055 | error("setitimer param 3 != NULL not implemented"); | |
1056 | if (!is_timeval_eq(&in->it_interval, &zero) && | |
1057 | !is_timeval_eq(&in->it_interval, &in->it_value)) | |
1058 | return errno = EINVAL, | |
1059 | error("setitimer: it_interval must be zero or eq it_value"); | |
1060 | ||
1061 | if (timer_thread) | |
1062 | stop_timer_thread(); | |
1063 | ||
1064 | if (is_timeval_eq(&in->it_value, &zero) && | |
1065 | is_timeval_eq(&in->it_interval, &zero)) | |
1066 | return 0; | |
1067 | ||
1068 | timer_interval = in->it_value.tv_sec * 1000 + in->it_value.tv_usec / 1000; | |
1069 | one_shot = is_timeval_eq(&in->it_interval, &zero); | |
1070 | if (!atexit_done) { | |
1071 | atexit(stop_timer_thread); | |
1072 | atexit_done = 1; | |
1073 | } | |
1074 | return start_timer_thread(); | |
f4626df5 JS |
1075 | } |
1076 | ||
1077 | int sigaction(int sig, struct sigaction *in, struct sigaction *out) | |
1078 | { | |
6072fc31 JS |
1079 | if (sig != SIGALRM) |
1080 | return errno = EINVAL, | |
1081 | error("sigaction only implemented for SIGALRM"); | |
1082 | if (out != NULL) | |
1083 | return errno = EINVAL, | |
1084 | error("sigaction: param 3 != NULL not implemented"); | |
1085 | ||
1086 | timer_fn = in->sa_handler; | |
1087 | return 0; | |
1088 | } | |
1089 | ||
1090 | #undef signal | |
1091 | sig_handler_t mingw_signal(int sig, sig_handler_t handler) | |
1092 | { | |
1093 | if (sig != SIGALRM) | |
1094 | return signal(sig, handler); | |
1095 | sig_handler_t old = timer_fn; | |
1096 | timer_fn = handler; | |
1097 | return old; | |
f4626df5 | 1098 | } |
4804aabc SP |
1099 | |
1100 | static const char *make_backslash_path(const char *path) | |
1101 | { | |
1102 | static char buf[PATH_MAX + 1]; | |
1103 | char *c; | |
1104 | ||
1105 | if (strlcpy(buf, path, PATH_MAX) >= PATH_MAX) | |
1106 | die("Too long path: %.*s", 60, path); | |
1107 | ||
1108 | for (c = buf; *c; c++) { | |
1109 | if (*c == '/') | |
1110 | *c = '\\'; | |
1111 | } | |
1112 | return buf; | |
1113 | } | |
1114 | ||
1115 | void mingw_open_html(const char *unixpath) | |
1116 | { | |
1117 | const char *htmlpath = make_backslash_path(unixpath); | |
1118 | printf("Launching default browser to display HTML ...\n"); | |
1119 | ShellExecute(NULL, "open", htmlpath, NULL, "\\", 0); | |
1120 | } | |
7be401e0 PK |
1121 | |
1122 | int link(const char *oldpath, const char *newpath) | |
1123 | { | |
1124 | typedef BOOL WINAPI (*T)(const char*, const char*, LPSECURITY_ATTRIBUTES); | |
1125 | static T create_hard_link = NULL; | |
1126 | if (!create_hard_link) { | |
1127 | create_hard_link = (T) GetProcAddress( | |
1128 | GetModuleHandle("kernel32.dll"), "CreateHardLinkA"); | |
1129 | if (!create_hard_link) | |
1130 | create_hard_link = (T)-1; | |
1131 | } | |
1132 | if (create_hard_link == (T)-1) { | |
1133 | errno = ENOSYS; | |
1134 | return -1; | |
1135 | } | |
1136 | if (!create_hard_link(newpath, oldpath, NULL)) { | |
1137 | errno = err_win_to_posix(GetLastError()); | |
1138 | return -1; | |
1139 | } | |
1140 | return 0; | |
1141 | } |