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Commit | Line | Data |
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f4626df5 | 1 | #include "../git-compat-util.h" |
7e5d7768 | 2 | #include "../strbuf.h" |
f4626df5 JS |
3 | |
4 | unsigned int _CRT_fmode = _O_BINARY; | |
5 | ||
3e4a1ba0 JS |
6 | #undef open |
7 | int mingw_open (const char *filename, int oflags, ...) | |
8 | { | |
9 | va_list args; | |
10 | unsigned mode; | |
11 | va_start(args, oflags); | |
12 | mode = va_arg(args, int); | |
13 | va_end(args); | |
14 | ||
15 | if (!strcmp(filename, "/dev/null")) | |
16 | filename = "nul"; | |
17 | int fd = open(filename, oflags, mode); | |
18 | if (fd < 0 && (oflags & O_CREAT) && errno == EACCES) { | |
19 | DWORD attrs = GetFileAttributes(filename); | |
20 | if (attrs != INVALID_FILE_ATTRIBUTES && (attrs & FILE_ATTRIBUTE_DIRECTORY)) | |
21 | errno = EISDIR; | |
22 | } | |
23 | return fd; | |
24 | } | |
25 | ||
5411bdc4 MSO |
26 | static inline time_t filetime_to_time_t(const FILETIME *ft) |
27 | { | |
28 | long long winTime = ((long long)ft->dwHighDateTime << 32) + ft->dwLowDateTime; | |
29 | winTime -= 116444736000000000LL; /* Windows to Unix Epoch conversion */ | |
30 | winTime /= 10000000; /* Nano to seconds resolution */ | |
31 | return (time_t)winTime; | |
32 | } | |
33 | ||
34 | extern int _getdrive( void ); | |
35 | /* We keep the do_lstat code in a separate function to avoid recursion. | |
36 | * When a path ends with a slash, the stat will fail with ENOENT. In | |
37 | * this case, we strip the trailing slashes and stat again. | |
38 | */ | |
39 | static int do_lstat(const char *file_name, struct stat *buf) | |
40 | { | |
41 | WIN32_FILE_ATTRIBUTE_DATA fdata; | |
42 | ||
43 | if (GetFileAttributesExA(file_name, GetFileExInfoStandard, &fdata)) { | |
44 | int fMode = S_IREAD; | |
45 | if (fdata.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) | |
46 | fMode |= S_IFDIR; | |
47 | else | |
48 | fMode |= S_IFREG; | |
49 | if (!(fdata.dwFileAttributes & FILE_ATTRIBUTE_READONLY)) | |
50 | fMode |= S_IWRITE; | |
51 | ||
52 | buf->st_ino = 0; | |
53 | buf->st_gid = 0; | |
54 | buf->st_uid = 0; | |
180964f0 | 55 | buf->st_nlink = 1; |
5411bdc4 MSO |
56 | buf->st_mode = fMode; |
57 | buf->st_size = fdata.nFileSizeLow; /* Can't use nFileSizeHigh, since it's not a stat64 */ | |
180964f0 | 58 | buf->st_dev = buf->st_rdev = (_getdrive() - 1); |
5411bdc4 MSO |
59 | buf->st_atime = filetime_to_time_t(&(fdata.ftLastAccessTime)); |
60 | buf->st_mtime = filetime_to_time_t(&(fdata.ftLastWriteTime)); | |
61 | buf->st_ctime = filetime_to_time_t(&(fdata.ftCreationTime)); | |
62 | errno = 0; | |
63 | return 0; | |
64 | } | |
65 | ||
66 | switch (GetLastError()) { | |
67 | case ERROR_ACCESS_DENIED: | |
68 | case ERROR_SHARING_VIOLATION: | |
69 | case ERROR_LOCK_VIOLATION: | |
70 | case ERROR_SHARING_BUFFER_EXCEEDED: | |
71 | errno = EACCES; | |
72 | break; | |
73 | case ERROR_BUFFER_OVERFLOW: | |
74 | errno = ENAMETOOLONG; | |
75 | break; | |
76 | case ERROR_NOT_ENOUGH_MEMORY: | |
77 | errno = ENOMEM; | |
78 | break; | |
79 | default: | |
80 | errno = ENOENT; | |
81 | break; | |
82 | } | |
83 | return -1; | |
84 | } | |
85 | ||
86 | /* We provide our own lstat/fstat functions, since the provided | |
87 | * lstat/fstat functions are so slow. These stat functions are | |
88 | * tailored for Git's usage (read: fast), and are not meant to be | |
89 | * complete. Note that Git stat()s are redirected to mingw_lstat() | |
90 | * too, since Windows doesn't really handle symlinks that well. | |
91 | */ | |
180964f0 | 92 | int mingw_lstat(const char *file_name, struct stat *buf) |
5411bdc4 MSO |
93 | { |
94 | int namelen; | |
95 | static char alt_name[PATH_MAX]; | |
96 | ||
97 | if (!do_lstat(file_name, buf)) | |
98 | return 0; | |
99 | ||
100 | /* if file_name ended in a '/', Windows returned ENOENT; | |
101 | * try again without trailing slashes | |
102 | */ | |
103 | if (errno != ENOENT) | |
104 | return -1; | |
105 | ||
106 | namelen = strlen(file_name); | |
107 | if (namelen && file_name[namelen-1] != '/') | |
108 | return -1; | |
109 | while (namelen && file_name[namelen-1] == '/') | |
110 | --namelen; | |
111 | if (!namelen || namelen >= PATH_MAX) | |
112 | return -1; | |
113 | ||
114 | memcpy(alt_name, file_name, namelen); | |
115 | alt_name[namelen] = 0; | |
116 | return do_lstat(alt_name, buf); | |
117 | } | |
118 | ||
119 | #undef fstat | |
180964f0 | 120 | int mingw_fstat(int fd, struct stat *buf) |
5411bdc4 MSO |
121 | { |
122 | HANDLE fh = (HANDLE)_get_osfhandle(fd); | |
123 | BY_HANDLE_FILE_INFORMATION fdata; | |
124 | ||
125 | if (fh == INVALID_HANDLE_VALUE) { | |
126 | errno = EBADF; | |
127 | return -1; | |
128 | } | |
129 | /* direct non-file handles to MS's fstat() */ | |
180964f0 JS |
130 | if (GetFileType(fh) != FILE_TYPE_DISK) |
131 | return fstat(fd, buf); | |
5411bdc4 MSO |
132 | |
133 | if (GetFileInformationByHandle(fh, &fdata)) { | |
134 | int fMode = S_IREAD; | |
135 | if (fdata.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) | |
136 | fMode |= S_IFDIR; | |
137 | else | |
138 | fMode |= S_IFREG; | |
139 | if (!(fdata.dwFileAttributes & FILE_ATTRIBUTE_READONLY)) | |
140 | fMode |= S_IWRITE; | |
141 | ||
142 | buf->st_ino = 0; | |
143 | buf->st_gid = 0; | |
144 | buf->st_uid = 0; | |
180964f0 | 145 | buf->st_nlink = 1; |
5411bdc4 MSO |
146 | buf->st_mode = fMode; |
147 | buf->st_size = fdata.nFileSizeLow; /* Can't use nFileSizeHigh, since it's not a stat64 */ | |
180964f0 | 148 | buf->st_dev = buf->st_rdev = (_getdrive() - 1); |
5411bdc4 MSO |
149 | buf->st_atime = filetime_to_time_t(&(fdata.ftLastAccessTime)); |
150 | buf->st_mtime = filetime_to_time_t(&(fdata.ftLastWriteTime)); | |
151 | buf->st_ctime = filetime_to_time_t(&(fdata.ftCreationTime)); | |
152 | return 0; | |
153 | } | |
154 | errno = EBADF; | |
155 | return -1; | |
156 | } | |
157 | ||
7c0ffa1c JS |
158 | static inline void time_t_to_filetime(time_t t, FILETIME *ft) |
159 | { | |
160 | long long winTime = t * 10000000LL + 116444736000000000LL; | |
161 | ft->dwLowDateTime = winTime; | |
162 | ft->dwHighDateTime = winTime >> 32; | |
163 | } | |
164 | ||
165 | int mingw_utime (const char *file_name, const struct utimbuf *times) | |
166 | { | |
167 | FILETIME mft, aft; | |
168 | int fh, rc; | |
169 | ||
170 | /* must have write permission */ | |
171 | if ((fh = open(file_name, O_RDWR | O_BINARY)) < 0) | |
172 | return -1; | |
173 | ||
174 | time_t_to_filetime(times->modtime, &mft); | |
175 | time_t_to_filetime(times->actime, &aft); | |
176 | if (!SetFileTime((HANDLE)_get_osfhandle(fh), NULL, &aft, &mft)) { | |
177 | errno = EINVAL; | |
178 | rc = -1; | |
179 | } else | |
180 | rc = 0; | |
181 | close(fh); | |
182 | return rc; | |
183 | } | |
184 | ||
f4626df5 JS |
185 | unsigned int sleep (unsigned int seconds) |
186 | { | |
187 | Sleep(seconds*1000); | |
188 | return 0; | |
189 | } | |
190 | ||
191 | int mkstemp(char *template) | |
192 | { | |
193 | char *filename = mktemp(template); | |
194 | if (filename == NULL) | |
195 | return -1; | |
196 | return open(filename, O_RDWR | O_CREAT, 0600); | |
197 | } | |
198 | ||
199 | int gettimeofday(struct timeval *tv, void *tz) | |
200 | { | |
a42a0c2e JS |
201 | SYSTEMTIME st; |
202 | struct tm tm; | |
203 | GetSystemTime(&st); | |
204 | tm.tm_year = st.wYear-1900; | |
205 | tm.tm_mon = st.wMonth-1; | |
206 | tm.tm_mday = st.wDay; | |
207 | tm.tm_hour = st.wHour; | |
208 | tm.tm_min = st.wMinute; | |
209 | tm.tm_sec = st.wSecond; | |
210 | tv->tv_sec = tm_to_time_t(&tm); | |
211 | if (tv->tv_sec < 0) | |
212 | return -1; | |
213 | tv->tv_usec = st.wMilliseconds*1000; | |
214 | return 0; | |
f4626df5 JS |
215 | } |
216 | ||
897bb8cb JS |
217 | int pipe(int filedes[2]) |
218 | { | |
219 | int fd; | |
220 | HANDLE h[2], parent; | |
221 | ||
222 | if (_pipe(filedes, 8192, 0) < 0) | |
223 | return -1; | |
224 | ||
225 | parent = GetCurrentProcess(); | |
226 | ||
227 | if (!DuplicateHandle (parent, (HANDLE)_get_osfhandle(filedes[0]), | |
228 | parent, &h[0], 0, FALSE, DUPLICATE_SAME_ACCESS)) { | |
229 | close(filedes[0]); | |
230 | close(filedes[1]); | |
231 | return -1; | |
232 | } | |
233 | if (!DuplicateHandle (parent, (HANDLE)_get_osfhandle(filedes[1]), | |
234 | parent, &h[1], 0, FALSE, DUPLICATE_SAME_ACCESS)) { | |
235 | close(filedes[0]); | |
236 | close(filedes[1]); | |
237 | CloseHandle(h[0]); | |
238 | return -1; | |
239 | } | |
240 | fd = _open_osfhandle((int)h[0], O_NOINHERIT); | |
241 | if (fd < 0) { | |
242 | close(filedes[0]); | |
243 | close(filedes[1]); | |
244 | CloseHandle(h[0]); | |
245 | CloseHandle(h[1]); | |
246 | return -1; | |
247 | } | |
248 | close(filedes[0]); | |
249 | filedes[0] = fd; | |
250 | fd = _open_osfhandle((int)h[1], O_NOINHERIT); | |
251 | if (fd < 0) { | |
252 | close(filedes[0]); | |
253 | close(filedes[1]); | |
254 | CloseHandle(h[1]); | |
255 | return -1; | |
256 | } | |
257 | close(filedes[1]); | |
258 | filedes[1] = fd; | |
259 | return 0; | |
260 | } | |
261 | ||
f4626df5 JS |
262 | int poll(struct pollfd *ufds, unsigned int nfds, int timeout) |
263 | { | |
6ed807f8 JS |
264 | int i, pending; |
265 | ||
d317851a JS |
266 | if (timeout >= 0) { |
267 | if (nfds == 0) { | |
268 | Sleep(timeout); | |
269 | return 0; | |
270 | } | |
6ed807f8 | 271 | return errno = EINVAL, error("poll timeout not supported"); |
d317851a | 272 | } |
6ed807f8 JS |
273 | |
274 | /* When there is only one fd to wait for, then we pretend that | |
275 | * input is available and let the actual wait happen when the | |
276 | * caller invokes read(). | |
277 | */ | |
278 | if (nfds == 1) { | |
279 | if (!(ufds[0].events & POLLIN)) | |
280 | return errno = EINVAL, error("POLLIN not set"); | |
281 | ufds[0].revents = POLLIN; | |
282 | return 0; | |
283 | } | |
284 | ||
285 | repeat: | |
286 | pending = 0; | |
287 | for (i = 0; i < nfds; i++) { | |
288 | DWORD avail = 0; | |
289 | HANDLE h = (HANDLE) _get_osfhandle(ufds[i].fd); | |
290 | if (h == INVALID_HANDLE_VALUE) | |
291 | return -1; /* errno was set */ | |
292 | ||
293 | if (!(ufds[i].events & POLLIN)) | |
294 | return errno = EINVAL, error("POLLIN not set"); | |
295 | ||
296 | /* this emulation works only for pipes */ | |
297 | if (!PeekNamedPipe(h, NULL, 0, NULL, &avail, NULL)) { | |
298 | int err = GetLastError(); | |
299 | if (err == ERROR_BROKEN_PIPE) { | |
300 | ufds[i].revents = POLLHUP; | |
301 | pending++; | |
302 | } else { | |
303 | errno = EINVAL; | |
304 | return error("PeekNamedPipe failed," | |
305 | " GetLastError: %u", err); | |
306 | } | |
307 | } else if (avail) { | |
308 | ufds[i].revents = POLLIN; | |
309 | pending++; | |
310 | } else | |
311 | ufds[i].revents = 0; | |
312 | } | |
313 | if (!pending) { | |
314 | /* The only times that we spin here is when the process | |
315 | * that is connected through the pipes is waiting for | |
316 | * its own input data to become available. But since | |
317 | * the process (pack-objects) is itself CPU intensive, | |
318 | * it will happily pick up the time slice that we are | |
319 | * relinguishing here. | |
320 | */ | |
321 | Sleep(0); | |
322 | goto repeat; | |
323 | } | |
324 | return 0; | |
f4626df5 JS |
325 | } |
326 | ||
327 | struct tm *gmtime_r(const time_t *timep, struct tm *result) | |
328 | { | |
329 | /* gmtime() in MSVCRT.DLL is thread-safe, but not reentrant */ | |
330 | memcpy(result, gmtime(timep), sizeof(struct tm)); | |
331 | return result; | |
332 | } | |
333 | ||
334 | struct tm *localtime_r(const time_t *timep, struct tm *result) | |
335 | { | |
336 | /* localtime() in MSVCRT.DLL is thread-safe, but not reentrant */ | |
337 | memcpy(result, localtime(timep), sizeof(struct tm)); | |
338 | return result; | |
339 | } | |
340 | ||
25fe217b JS |
341 | #undef getcwd |
342 | char *mingw_getcwd(char *pointer, int len) | |
343 | { | |
344 | int i; | |
345 | char *ret = getcwd(pointer, len); | |
346 | if (!ret) | |
347 | return ret; | |
348 | for (i = 0; pointer[i]; i++) | |
349 | if (pointer[i] == '\\') | |
350 | pointer[i] = '/'; | |
351 | return ret; | |
352 | } | |
353 | ||
6fd6aec4 JS |
354 | #undef getenv |
355 | char *mingw_getenv(const char *name) | |
356 | { | |
357 | char *result = getenv(name); | |
358 | if (!result && !strcmp(name, "TMPDIR")) { | |
359 | /* on Windows it is TMP and TEMP */ | |
360 | result = getenv("TMP"); | |
361 | if (!result) | |
362 | result = getenv("TEMP"); | |
363 | } | |
364 | return result; | |
365 | } | |
366 | ||
7e5d7768 JS |
367 | /* |
368 | * See http://msdn2.microsoft.com/en-us/library/17w5ykft(vs.71).aspx | |
369 | * (Parsing C++ Command-Line Arguments) | |
370 | */ | |
371 | static const char *quote_arg(const char *arg) | |
372 | { | |
373 | /* count chars to quote */ | |
374 | int len = 0, n = 0; | |
375 | int force_quotes = 0; | |
376 | char *q, *d; | |
377 | const char *p = arg; | |
378 | if (!*p) force_quotes = 1; | |
379 | while (*p) { | |
380 | if (isspace(*p) || *p == '*' || *p == '?' || *p == '{') | |
381 | force_quotes = 1; | |
382 | else if (*p == '"') | |
383 | n++; | |
384 | else if (*p == '\\') { | |
385 | int count = 0; | |
386 | while (*p == '\\') { | |
387 | count++; | |
388 | p++; | |
389 | len++; | |
390 | } | |
391 | if (*p == '"') | |
392 | n += count*2 + 1; | |
393 | continue; | |
394 | } | |
395 | len++; | |
396 | p++; | |
397 | } | |
398 | if (!force_quotes && n == 0) | |
399 | return arg; | |
400 | ||
401 | /* insert \ where necessary */ | |
402 | d = q = xmalloc(len+n+3); | |
403 | *d++ = '"'; | |
404 | while (*arg) { | |
405 | if (*arg == '"') | |
406 | *d++ = '\\'; | |
407 | else if (*arg == '\\') { | |
408 | int count = 0; | |
409 | while (*arg == '\\') { | |
410 | count++; | |
411 | *d++ = *arg++; | |
412 | } | |
413 | if (*arg == '"') { | |
414 | while (count-- > 0) | |
415 | *d++ = '\\'; | |
416 | *d++ = '\\'; | |
417 | } | |
418 | } | |
419 | *d++ = *arg++; | |
420 | } | |
421 | *d++ = '"'; | |
422 | *d++ = 0; | |
423 | return q; | |
424 | } | |
425 | ||
f1a4dfb8 JS |
426 | static const char *parse_interpreter(const char *cmd) |
427 | { | |
428 | static char buf[100]; | |
429 | char *p, *opt; | |
430 | int n, fd; | |
431 | ||
432 | /* don't even try a .exe */ | |
433 | n = strlen(cmd); | |
434 | if (n >= 4 && !strcasecmp(cmd+n-4, ".exe")) | |
435 | return NULL; | |
436 | ||
437 | fd = open(cmd, O_RDONLY); | |
438 | if (fd < 0) | |
439 | return NULL; | |
440 | n = read(fd, buf, sizeof(buf)-1); | |
441 | close(fd); | |
442 | if (n < 4) /* at least '#!/x' and not error */ | |
443 | return NULL; | |
444 | ||
445 | if (buf[0] != '#' || buf[1] != '!') | |
446 | return NULL; | |
447 | buf[n] = '\0'; | |
448 | p = strchr(buf, '\n'); | |
449 | if (!p) | |
450 | return NULL; | |
451 | ||
452 | *p = '\0'; | |
453 | if (!(p = strrchr(buf+2, '/')) && !(p = strrchr(buf+2, '\\'))) | |
454 | return NULL; | |
455 | /* strip options */ | |
456 | if ((opt = strchr(p+1, ' '))) | |
457 | *opt = '\0'; | |
458 | return p+1; | |
459 | } | |
460 | ||
461 | /* | |
462 | * Splits the PATH into parts. | |
463 | */ | |
464 | static char **get_path_split(void) | |
465 | { | |
466 | char *p, **path, *envpath = getenv("PATH"); | |
467 | int i, n = 0; | |
468 | ||
469 | if (!envpath || !*envpath) | |
470 | return NULL; | |
471 | ||
472 | envpath = xstrdup(envpath); | |
473 | p = envpath; | |
474 | while (p) { | |
475 | char *dir = p; | |
476 | p = strchr(p, ';'); | |
477 | if (p) *p++ = '\0'; | |
478 | if (*dir) { /* not earlier, catches series of ; */ | |
479 | ++n; | |
480 | } | |
481 | } | |
482 | if (!n) | |
483 | return NULL; | |
484 | ||
485 | path = xmalloc((n+1)*sizeof(char*)); | |
486 | p = envpath; | |
487 | i = 0; | |
488 | do { | |
489 | if (*p) | |
490 | path[i++] = xstrdup(p); | |
491 | p = p+strlen(p)+1; | |
492 | } while (i < n); | |
493 | path[i] = NULL; | |
494 | ||
495 | free(envpath); | |
496 | ||
497 | return path; | |
498 | } | |
499 | ||
500 | static void free_path_split(char **path) | |
501 | { | |
502 | if (!path) | |
503 | return; | |
504 | ||
505 | char **p = path; | |
506 | while (*p) | |
507 | free(*p++); | |
508 | free(path); | |
509 | } | |
510 | ||
511 | /* | |
512 | * exe_only means that we only want to detect .exe files, but not scripts | |
513 | * (which do not have an extension) | |
514 | */ | |
515 | static char *lookup_prog(const char *dir, const char *cmd, int isexe, int exe_only) | |
516 | { | |
517 | char path[MAX_PATH]; | |
518 | snprintf(path, sizeof(path), "%s/%s.exe", dir, cmd); | |
519 | ||
520 | if (!isexe && access(path, F_OK) == 0) | |
521 | return xstrdup(path); | |
522 | path[strlen(path)-4] = '\0'; | |
523 | if ((!exe_only || isexe) && access(path, F_OK) == 0) | |
fe77b695 ER |
524 | if (!(GetFileAttributes(path) & FILE_ATTRIBUTE_DIRECTORY)) |
525 | return xstrdup(path); | |
f1a4dfb8 JS |
526 | return NULL; |
527 | } | |
528 | ||
529 | /* | |
530 | * Determines the absolute path of cmd using the the split path in path. | |
531 | * If cmd contains a slash or backslash, no lookup is performed. | |
532 | */ | |
533 | static char *path_lookup(const char *cmd, char **path, int exe_only) | |
534 | { | |
535 | char *prog = NULL; | |
536 | int len = strlen(cmd); | |
537 | int isexe = len >= 4 && !strcasecmp(cmd+len-4, ".exe"); | |
538 | ||
539 | if (strchr(cmd, '/') || strchr(cmd, '\\')) | |
540 | prog = xstrdup(cmd); | |
541 | ||
542 | while (!prog && *path) | |
543 | prog = lookup_prog(*path++, cmd, isexe, exe_only); | |
544 | ||
545 | return prog; | |
546 | } | |
547 | ||
7e5d7768 JS |
548 | static int env_compare(const void *a, const void *b) |
549 | { | |
550 | char *const *ea = a; | |
551 | char *const *eb = b; | |
552 | return strcasecmp(*ea, *eb); | |
553 | } | |
554 | ||
555 | static pid_t mingw_spawnve(const char *cmd, const char **argv, char **env, | |
556 | int prepend_cmd) | |
557 | { | |
558 | STARTUPINFO si; | |
559 | PROCESS_INFORMATION pi; | |
560 | struct strbuf envblk, args; | |
561 | unsigned flags; | |
562 | BOOL ret; | |
563 | ||
564 | /* Determine whether or not we are associated to a console */ | |
565 | HANDLE cons = CreateFile("CONOUT$", GENERIC_WRITE, | |
566 | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, | |
567 | FILE_ATTRIBUTE_NORMAL, NULL); | |
568 | if (cons == INVALID_HANDLE_VALUE) { | |
569 | /* There is no console associated with this process. | |
570 | * Since the child is a console process, Windows | |
571 | * would normally create a console window. But | |
572 | * since we'll be redirecting std streams, we do | |
573 | * not need the console. | |
574 | */ | |
575 | flags = CREATE_NO_WINDOW; | |
576 | } else { | |
577 | /* There is already a console. If we specified | |
578 | * CREATE_NO_WINDOW here, too, Windows would | |
579 | * disassociate the child from the console. | |
580 | * Go figure! | |
581 | */ | |
582 | flags = 0; | |
583 | CloseHandle(cons); | |
584 | } | |
585 | memset(&si, 0, sizeof(si)); | |
586 | si.cb = sizeof(si); | |
587 | si.dwFlags = STARTF_USESTDHANDLES; | |
588 | si.hStdInput = (HANDLE) _get_osfhandle(0); | |
589 | si.hStdOutput = (HANDLE) _get_osfhandle(1); | |
590 | si.hStdError = (HANDLE) _get_osfhandle(2); | |
591 | ||
592 | /* concatenate argv, quoting args as we go */ | |
593 | strbuf_init(&args, 0); | |
594 | if (prepend_cmd) { | |
595 | char *quoted = (char *)quote_arg(cmd); | |
596 | strbuf_addstr(&args, quoted); | |
597 | if (quoted != cmd) | |
598 | free(quoted); | |
599 | } | |
600 | for (; *argv; argv++) { | |
601 | char *quoted = (char *)quote_arg(*argv); | |
602 | if (*args.buf) | |
603 | strbuf_addch(&args, ' '); | |
604 | strbuf_addstr(&args, quoted); | |
605 | if (quoted != *argv) | |
606 | free(quoted); | |
607 | } | |
608 | ||
609 | if (env) { | |
610 | int count = 0; | |
611 | char **e, **sorted_env; | |
612 | ||
613 | for (e = env; *e; e++) | |
614 | count++; | |
615 | ||
616 | /* environment must be sorted */ | |
617 | sorted_env = xmalloc(sizeof(*sorted_env) * (count + 1)); | |
618 | memcpy(sorted_env, env, sizeof(*sorted_env) * (count + 1)); | |
619 | qsort(sorted_env, count, sizeof(*sorted_env), env_compare); | |
620 | ||
621 | strbuf_init(&envblk, 0); | |
622 | for (e = sorted_env; *e; e++) { | |
623 | strbuf_addstr(&envblk, *e); | |
624 | strbuf_addch(&envblk, '\0'); | |
625 | } | |
626 | free(sorted_env); | |
627 | } | |
628 | ||
629 | memset(&pi, 0, sizeof(pi)); | |
630 | ret = CreateProcess(cmd, args.buf, NULL, NULL, TRUE, flags, | |
631 | env ? envblk.buf : NULL, NULL, &si, &pi); | |
632 | ||
633 | if (env) | |
634 | strbuf_release(&envblk); | |
635 | strbuf_release(&args); | |
636 | ||
637 | if (!ret) { | |
638 | errno = ENOENT; | |
639 | return -1; | |
640 | } | |
641 | CloseHandle(pi.hThread); | |
642 | return (pid_t)pi.hProcess; | |
643 | } | |
644 | ||
645 | pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **env) | |
646 | { | |
647 | pid_t pid; | |
648 | char **path = get_path_split(); | |
649 | char *prog = path_lookup(cmd, path, 0); | |
650 | ||
651 | if (!prog) { | |
652 | errno = ENOENT; | |
653 | pid = -1; | |
654 | } | |
655 | else { | |
656 | const char *interpr = parse_interpreter(prog); | |
657 | ||
658 | if (interpr) { | |
659 | const char *argv0 = argv[0]; | |
660 | char *iprog = path_lookup(interpr, path, 1); | |
661 | argv[0] = prog; | |
662 | if (!iprog) { | |
663 | errno = ENOENT; | |
664 | pid = -1; | |
665 | } | |
666 | else { | |
667 | pid = mingw_spawnve(iprog, argv, env, 1); | |
668 | free(iprog); | |
669 | } | |
670 | argv[0] = argv0; | |
671 | } | |
672 | else | |
673 | pid = mingw_spawnve(prog, argv, env, 0); | |
674 | free(prog); | |
675 | } | |
676 | free_path_split(path); | |
677 | return pid; | |
678 | } | |
679 | ||
f1a4dfb8 JS |
680 | static int try_shell_exec(const char *cmd, char *const *argv, char **env) |
681 | { | |
682 | const char *interpr = parse_interpreter(cmd); | |
683 | char **path; | |
684 | char *prog; | |
685 | int pid = 0; | |
686 | ||
687 | if (!interpr) | |
688 | return 0; | |
689 | path = get_path_split(); | |
690 | prog = path_lookup(interpr, path, 1); | |
691 | if (prog) { | |
692 | int argc = 0; | |
693 | const char **argv2; | |
694 | while (argv[argc]) argc++; | |
7e5d7768 JS |
695 | argv2 = xmalloc(sizeof(*argv) * (argc+1)); |
696 | argv2[0] = (char *)cmd; /* full path to the script file */ | |
697 | memcpy(&argv2[1], &argv[1], sizeof(*argv) * argc); | |
698 | pid = mingw_spawnve(prog, argv2, env, 1); | |
f1a4dfb8 JS |
699 | if (pid >= 0) { |
700 | int status; | |
701 | if (waitpid(pid, &status, 0) < 0) | |
702 | status = 255; | |
703 | exit(status); | |
704 | } | |
705 | pid = 1; /* indicate that we tried but failed */ | |
706 | free(prog); | |
707 | free(argv2); | |
708 | } | |
709 | free_path_split(path); | |
710 | return pid; | |
711 | } | |
712 | ||
713 | static void mingw_execve(const char *cmd, char *const *argv, char *const *env) | |
714 | { | |
715 | /* check if git_command is a shell script */ | |
716 | if (!try_shell_exec(cmd, argv, (char **)env)) { | |
717 | int pid, status; | |
718 | ||
7e5d7768 | 719 | pid = mingw_spawnve(cmd, (const char **)argv, (char **)env, 0); |
f1a4dfb8 JS |
720 | if (pid < 0) |
721 | return; | |
722 | if (waitpid(pid, &status, 0) < 0) | |
723 | status = 255; | |
724 | exit(status); | |
725 | } | |
726 | } | |
727 | ||
728 | void mingw_execvp(const char *cmd, char *const *argv) | |
729 | { | |
730 | char **path = get_path_split(); | |
731 | char *prog = path_lookup(cmd, path, 0); | |
732 | ||
733 | if (prog) { | |
734 | mingw_execve(prog, argv, environ); | |
735 | free(prog); | |
736 | } else | |
737 | errno = ENOENT; | |
738 | ||
739 | free_path_split(path); | |
740 | } | |
741 | ||
ba26f296 JS |
742 | char **copy_environ() |
743 | { | |
744 | char **env; | |
745 | int i = 0; | |
746 | while (environ[i]) | |
747 | i++; | |
748 | env = xmalloc((i+1)*sizeof(*env)); | |
749 | for (i = 0; environ[i]; i++) | |
750 | env[i] = xstrdup(environ[i]); | |
751 | env[i] = NULL; | |
752 | return env; | |
753 | } | |
754 | ||
755 | void free_environ(char **env) | |
756 | { | |
757 | int i; | |
758 | for (i = 0; env[i]; i++) | |
759 | free(env[i]); | |
760 | free(env); | |
761 | } | |
762 | ||
763 | static int lookup_env(char **env, const char *name, size_t nmln) | |
764 | { | |
765 | int i; | |
766 | ||
767 | for (i = 0; env[i]; i++) { | |
768 | if (0 == strncmp(env[i], name, nmln) | |
769 | && '=' == env[i][nmln]) | |
770 | /* matches */ | |
771 | return i; | |
772 | } | |
773 | return -1; | |
774 | } | |
775 | ||
776 | /* | |
777 | * If name contains '=', then sets the variable, otherwise it unsets it | |
778 | */ | |
779 | char **env_setenv(char **env, const char *name) | |
780 | { | |
781 | char *eq = strchrnul(name, '='); | |
782 | int i = lookup_env(env, name, eq-name); | |
783 | ||
784 | if (i < 0) { | |
785 | if (*eq) { | |
786 | for (i = 0; env[i]; i++) | |
787 | ; | |
788 | env = xrealloc(env, (i+2)*sizeof(*env)); | |
789 | env[i] = xstrdup(name); | |
790 | env[i+1] = NULL; | |
791 | } | |
792 | } | |
793 | else { | |
794 | free(env[i]); | |
795 | if (*eq) | |
796 | env[i] = xstrdup(name); | |
797 | else | |
798 | for (; env[i]; i++) | |
799 | env[i] = env[i+1]; | |
800 | } | |
801 | return env; | |
802 | } | |
803 | ||
746fb857 JS |
804 | /* this is the first function to call into WS_32; initialize it */ |
805 | #undef gethostbyname | |
806 | struct hostent *mingw_gethostbyname(const char *host) | |
807 | { | |
808 | WSADATA wsa; | |
809 | ||
810 | if (WSAStartup(MAKEWORD(2,2), &wsa)) | |
811 | die("unable to initialize winsock subsystem, error %d", | |
812 | WSAGetLastError()); | |
813 | atexit((void(*)(void)) WSACleanup); | |
814 | return gethostbyname(host); | |
815 | } | |
816 | ||
817 | int mingw_socket(int domain, int type, int protocol) | |
818 | { | |
819 | int sockfd; | |
820 | SOCKET s = WSASocket(domain, type, protocol, NULL, 0, 0); | |
821 | if (s == INVALID_SOCKET) { | |
822 | /* | |
823 | * WSAGetLastError() values are regular BSD error codes | |
824 | * biased by WSABASEERR. | |
825 | * However, strerror() does not know about networking | |
826 | * specific errors, which are values beginning at 38 or so. | |
827 | * Therefore, we choose to leave the biased error code | |
828 | * in errno so that _if_ someone looks up the code somewhere, | |
829 | * then it is at least the number that are usually listed. | |
830 | */ | |
831 | errno = WSAGetLastError(); | |
832 | return -1; | |
833 | } | |
834 | /* convert into a file descriptor */ | |
835 | if ((sockfd = _open_osfhandle(s, O_RDWR|O_BINARY)) < 0) { | |
836 | closesocket(s); | |
837 | return error("unable to make a socket file descriptor: %s", | |
838 | strerror(errno)); | |
839 | } | |
840 | return sockfd; | |
841 | } | |
842 | ||
843 | #undef connect | |
844 | int mingw_connect(int sockfd, struct sockaddr *sa, size_t sz) | |
845 | { | |
846 | SOCKET s = (SOCKET)_get_osfhandle(sockfd); | |
847 | return connect(s, sa, sz); | |
848 | } | |
849 | ||
ea9e98c3 JS |
850 | #undef rename |
851 | int mingw_rename(const char *pold, const char *pnew) | |
852 | { | |
853 | /* | |
854 | * Try native rename() first to get errno right. | |
855 | * It is based on MoveFile(), which cannot overwrite existing files. | |
856 | */ | |
857 | if (!rename(pold, pnew)) | |
858 | return 0; | |
859 | if (errno != EEXIST) | |
860 | return -1; | |
861 | if (MoveFileEx(pold, pnew, MOVEFILE_REPLACE_EXISTING)) | |
862 | return 0; | |
863 | /* TODO: translate more errors */ | |
864 | if (GetLastError() == ERROR_ACCESS_DENIED) { | |
865 | DWORD attrs = GetFileAttributes(pnew); | |
866 | if (attrs != INVALID_FILE_ATTRIBUTES && (attrs & FILE_ATTRIBUTE_DIRECTORY)) { | |
867 | errno = EISDIR; | |
868 | return -1; | |
869 | } | |
870 | } | |
871 | errno = EACCES; | |
872 | return -1; | |
873 | } | |
874 | ||
f4626df5 JS |
875 | struct passwd *getpwuid(int uid) |
876 | { | |
f7597aca | 877 | static char user_name[100]; |
f4626df5 | 878 | static struct passwd p; |
f7597aca JS |
879 | |
880 | DWORD len = sizeof(user_name); | |
881 | if (!GetUserName(user_name, &len)) | |
882 | return NULL; | |
883 | p.pw_name = user_name; | |
884 | p.pw_gecos = "unknown"; | |
885 | p.pw_dir = NULL; | |
f4626df5 JS |
886 | return &p; |
887 | } | |
888 | ||
6072fc31 JS |
889 | static HANDLE timer_event; |
890 | static HANDLE timer_thread; | |
891 | static int timer_interval; | |
892 | static int one_shot; | |
893 | static sig_handler_t timer_fn = SIG_DFL; | |
894 | ||
895 | /* The timer works like this: | |
896 | * The thread, ticktack(), is a trivial routine that most of the time | |
897 | * only waits to receive the signal to terminate. The main thread tells | |
898 | * the thread to terminate by setting the timer_event to the signalled | |
899 | * state. | |
900 | * But ticktack() interrupts the wait state after the timer's interval | |
901 | * length to call the signal handler. | |
902 | */ | |
903 | ||
904 | static __stdcall unsigned ticktack(void *dummy) | |
905 | { | |
906 | while (WaitForSingleObject(timer_event, timer_interval) == WAIT_TIMEOUT) { | |
907 | if (timer_fn == SIG_DFL) | |
908 | die("Alarm"); | |
909 | if (timer_fn != SIG_IGN) | |
910 | timer_fn(SIGALRM); | |
911 | if (one_shot) | |
912 | break; | |
913 | } | |
914 | return 0; | |
915 | } | |
916 | ||
917 | static int start_timer_thread(void) | |
918 | { | |
919 | timer_event = CreateEvent(NULL, FALSE, FALSE, NULL); | |
920 | if (timer_event) { | |
921 | timer_thread = (HANDLE) _beginthreadex(NULL, 0, ticktack, NULL, 0, NULL); | |
922 | if (!timer_thread ) | |
923 | return errno = ENOMEM, | |
924 | error("cannot start timer thread"); | |
925 | } else | |
926 | return errno = ENOMEM, | |
927 | error("cannot allocate resources for timer"); | |
928 | return 0; | |
929 | } | |
930 | ||
931 | static void stop_timer_thread(void) | |
932 | { | |
933 | if (timer_event) | |
934 | SetEvent(timer_event); /* tell thread to terminate */ | |
935 | if (timer_thread) { | |
936 | int rc = WaitForSingleObject(timer_thread, 1000); | |
937 | if (rc == WAIT_TIMEOUT) | |
938 | error("timer thread did not terminate timely"); | |
939 | else if (rc != WAIT_OBJECT_0) | |
940 | error("waiting for timer thread failed: %lu", | |
941 | GetLastError()); | |
942 | CloseHandle(timer_thread); | |
943 | } | |
944 | if (timer_event) | |
945 | CloseHandle(timer_event); | |
946 | timer_event = NULL; | |
947 | timer_thread = NULL; | |
948 | } | |
949 | ||
950 | static inline int is_timeval_eq(const struct timeval *i1, const struct timeval *i2) | |
951 | { | |
952 | return i1->tv_sec == i2->tv_sec && i1->tv_usec == i2->tv_usec; | |
953 | } | |
954 | ||
f4626df5 JS |
955 | int setitimer(int type, struct itimerval *in, struct itimerval *out) |
956 | { | |
6072fc31 JS |
957 | static const struct timeval zero; |
958 | static int atexit_done; | |
959 | ||
960 | if (out != NULL) | |
961 | return errno = EINVAL, | |
962 | error("setitimer param 3 != NULL not implemented"); | |
963 | if (!is_timeval_eq(&in->it_interval, &zero) && | |
964 | !is_timeval_eq(&in->it_interval, &in->it_value)) | |
965 | return errno = EINVAL, | |
966 | error("setitimer: it_interval must be zero or eq it_value"); | |
967 | ||
968 | if (timer_thread) | |
969 | stop_timer_thread(); | |
970 | ||
971 | if (is_timeval_eq(&in->it_value, &zero) && | |
972 | is_timeval_eq(&in->it_interval, &zero)) | |
973 | return 0; | |
974 | ||
975 | timer_interval = in->it_value.tv_sec * 1000 + in->it_value.tv_usec / 1000; | |
976 | one_shot = is_timeval_eq(&in->it_interval, &zero); | |
977 | if (!atexit_done) { | |
978 | atexit(stop_timer_thread); | |
979 | atexit_done = 1; | |
980 | } | |
981 | return start_timer_thread(); | |
f4626df5 JS |
982 | } |
983 | ||
984 | int sigaction(int sig, struct sigaction *in, struct sigaction *out) | |
985 | { | |
6072fc31 JS |
986 | if (sig != SIGALRM) |
987 | return errno = EINVAL, | |
988 | error("sigaction only implemented for SIGALRM"); | |
989 | if (out != NULL) | |
990 | return errno = EINVAL, | |
991 | error("sigaction: param 3 != NULL not implemented"); | |
992 | ||
993 | timer_fn = in->sa_handler; | |
994 | return 0; | |
995 | } | |
996 | ||
997 | #undef signal | |
998 | sig_handler_t mingw_signal(int sig, sig_handler_t handler) | |
999 | { | |
1000 | if (sig != SIGALRM) | |
1001 | return signal(sig, handler); | |
1002 | sig_handler_t old = timer_fn; | |
1003 | timer_fn = handler; | |
1004 | return old; | |
f4626df5 | 1005 | } |
4804aabc SP |
1006 | |
1007 | static const char *make_backslash_path(const char *path) | |
1008 | { | |
1009 | static char buf[PATH_MAX + 1]; | |
1010 | char *c; | |
1011 | ||
1012 | if (strlcpy(buf, path, PATH_MAX) >= PATH_MAX) | |
1013 | die("Too long path: %.*s", 60, path); | |
1014 | ||
1015 | for (c = buf; *c; c++) { | |
1016 | if (*c == '/') | |
1017 | *c = '\\'; | |
1018 | } | |
1019 | return buf; | |
1020 | } | |
1021 | ||
1022 | void mingw_open_html(const char *unixpath) | |
1023 | { | |
1024 | const char *htmlpath = make_backslash_path(unixpath); | |
1025 | printf("Launching default browser to display HTML ...\n"); | |
1026 | ShellExecute(NULL, "open", htmlpath, NULL, "\\", 0); | |
1027 | } |