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1 | #include "../git-compat-util.h" | |
2 | #include "win32.h" | |
3 | #include <conio.h> | |
4 | #include "../strbuf.h" | |
5 | #include "../run-command.h" | |
6 | ||
7 | static const int delay[] = { 0, 1, 10, 20, 40 }; | |
8 | ||
9 | int err_win_to_posix(DWORD winerr) | |
10 | { | |
11 | int error = ENOSYS; | |
12 | switch(winerr) { | |
13 | case ERROR_ACCESS_DENIED: error = EACCES; break; | |
14 | case ERROR_ACCOUNT_DISABLED: error = EACCES; break; | |
15 | case ERROR_ACCOUNT_RESTRICTION: error = EACCES; break; | |
16 | case ERROR_ALREADY_ASSIGNED: error = EBUSY; break; | |
17 | case ERROR_ALREADY_EXISTS: error = EEXIST; break; | |
18 | case ERROR_ARITHMETIC_OVERFLOW: error = ERANGE; break; | |
19 | case ERROR_BAD_COMMAND: error = EIO; break; | |
20 | case ERROR_BAD_DEVICE: error = ENODEV; break; | |
21 | case ERROR_BAD_DRIVER_LEVEL: error = ENXIO; break; | |
22 | case ERROR_BAD_EXE_FORMAT: error = ENOEXEC; break; | |
23 | case ERROR_BAD_FORMAT: error = ENOEXEC; break; | |
24 | case ERROR_BAD_LENGTH: error = EINVAL; break; | |
25 | case ERROR_BAD_PATHNAME: error = ENOENT; break; | |
26 | case ERROR_BAD_PIPE: error = EPIPE; break; | |
27 | case ERROR_BAD_UNIT: error = ENODEV; break; | |
28 | case ERROR_BAD_USERNAME: error = EINVAL; break; | |
29 | case ERROR_BROKEN_PIPE: error = EPIPE; break; | |
30 | case ERROR_BUFFER_OVERFLOW: error = ENAMETOOLONG; break; | |
31 | case ERROR_BUSY: error = EBUSY; break; | |
32 | case ERROR_BUSY_DRIVE: error = EBUSY; break; | |
33 | case ERROR_CALL_NOT_IMPLEMENTED: error = ENOSYS; break; | |
34 | case ERROR_CANNOT_MAKE: error = EACCES; break; | |
35 | case ERROR_CANTOPEN: error = EIO; break; | |
36 | case ERROR_CANTREAD: error = EIO; break; | |
37 | case ERROR_CANTWRITE: error = EIO; break; | |
38 | case ERROR_CRC: error = EIO; break; | |
39 | case ERROR_CURRENT_DIRECTORY: error = EACCES; break; | |
40 | case ERROR_DEVICE_IN_USE: error = EBUSY; break; | |
41 | case ERROR_DEV_NOT_EXIST: error = ENODEV; break; | |
42 | case ERROR_DIRECTORY: error = EINVAL; break; | |
43 | case ERROR_DIR_NOT_EMPTY: error = ENOTEMPTY; break; | |
44 | case ERROR_DISK_CHANGE: error = EIO; break; | |
45 | case ERROR_DISK_FULL: error = ENOSPC; break; | |
46 | case ERROR_DRIVE_LOCKED: error = EBUSY; break; | |
47 | case ERROR_ENVVAR_NOT_FOUND: error = EINVAL; break; | |
48 | case ERROR_EXE_MARKED_INVALID: error = ENOEXEC; break; | |
49 | case ERROR_FILENAME_EXCED_RANGE: error = ENAMETOOLONG; break; | |
50 | case ERROR_FILE_EXISTS: error = EEXIST; break; | |
51 | case ERROR_FILE_INVALID: error = ENODEV; break; | |
52 | case ERROR_FILE_NOT_FOUND: error = ENOENT; break; | |
53 | case ERROR_GEN_FAILURE: error = EIO; break; | |
54 | case ERROR_HANDLE_DISK_FULL: error = ENOSPC; break; | |
55 | case ERROR_INSUFFICIENT_BUFFER: error = ENOMEM; break; | |
56 | case ERROR_INVALID_ACCESS: error = EACCES; break; | |
57 | case ERROR_INVALID_ADDRESS: error = EFAULT; break; | |
58 | case ERROR_INVALID_BLOCK: error = EFAULT; break; | |
59 | case ERROR_INVALID_DATA: error = EINVAL; break; | |
60 | case ERROR_INVALID_DRIVE: error = ENODEV; break; | |
61 | case ERROR_INVALID_EXE_SIGNATURE: error = ENOEXEC; break; | |
62 | case ERROR_INVALID_FLAGS: error = EINVAL; break; | |
63 | case ERROR_INVALID_FUNCTION: error = ENOSYS; break; | |
64 | case ERROR_INVALID_HANDLE: error = EBADF; break; | |
65 | case ERROR_INVALID_LOGON_HOURS: error = EACCES; break; | |
66 | case ERROR_INVALID_NAME: error = EINVAL; break; | |
67 | case ERROR_INVALID_OWNER: error = EINVAL; break; | |
68 | case ERROR_INVALID_PARAMETER: error = EINVAL; break; | |
69 | case ERROR_INVALID_PASSWORD: error = EPERM; break; | |
70 | case ERROR_INVALID_PRIMARY_GROUP: error = EINVAL; break; | |
71 | case ERROR_INVALID_SIGNAL_NUMBER: error = EINVAL; break; | |
72 | case ERROR_INVALID_TARGET_HANDLE: error = EIO; break; | |
73 | case ERROR_INVALID_WORKSTATION: error = EACCES; break; | |
74 | case ERROR_IO_DEVICE: error = EIO; break; | |
75 | case ERROR_IO_INCOMPLETE: error = EINTR; break; | |
76 | case ERROR_LOCKED: error = EBUSY; break; | |
77 | case ERROR_LOCK_VIOLATION: error = EACCES; break; | |
78 | case ERROR_LOGON_FAILURE: error = EACCES; break; | |
79 | case ERROR_MAPPED_ALIGNMENT: error = EINVAL; break; | |
80 | case ERROR_META_EXPANSION_TOO_LONG: error = E2BIG; break; | |
81 | case ERROR_MORE_DATA: error = EPIPE; break; | |
82 | case ERROR_NEGATIVE_SEEK: error = ESPIPE; break; | |
83 | case ERROR_NOACCESS: error = EFAULT; break; | |
84 | case ERROR_NONE_MAPPED: error = EINVAL; break; | |
85 | case ERROR_NOT_ENOUGH_MEMORY: error = ENOMEM; break; | |
86 | case ERROR_NOT_READY: error = EAGAIN; break; | |
87 | case ERROR_NOT_SAME_DEVICE: error = EXDEV; break; | |
88 | case ERROR_NO_DATA: error = EPIPE; break; | |
89 | case ERROR_NO_MORE_SEARCH_HANDLES: error = EIO; break; | |
90 | case ERROR_NO_PROC_SLOTS: error = EAGAIN; break; | |
91 | case ERROR_NO_SUCH_PRIVILEGE: error = EACCES; break; | |
92 | case ERROR_OPEN_FAILED: error = EIO; break; | |
93 | case ERROR_OPEN_FILES: error = EBUSY; break; | |
94 | case ERROR_OPERATION_ABORTED: error = EINTR; break; | |
95 | case ERROR_OUTOFMEMORY: error = ENOMEM; break; | |
96 | case ERROR_PASSWORD_EXPIRED: error = EACCES; break; | |
97 | case ERROR_PATH_BUSY: error = EBUSY; break; | |
98 | case ERROR_PATH_NOT_FOUND: error = ENOENT; break; | |
99 | case ERROR_PIPE_BUSY: error = EBUSY; break; | |
100 | case ERROR_PIPE_CONNECTED: error = EPIPE; break; | |
101 | case ERROR_PIPE_LISTENING: error = EPIPE; break; | |
102 | case ERROR_PIPE_NOT_CONNECTED: error = EPIPE; break; | |
103 | case ERROR_PRIVILEGE_NOT_HELD: error = EACCES; break; | |
104 | case ERROR_READ_FAULT: error = EIO; break; | |
105 | case ERROR_SEEK: error = EIO; break; | |
106 | case ERROR_SEEK_ON_DEVICE: error = ESPIPE; break; | |
107 | case ERROR_SHARING_BUFFER_EXCEEDED: error = ENFILE; break; | |
108 | case ERROR_SHARING_VIOLATION: error = EACCES; break; | |
109 | case ERROR_STACK_OVERFLOW: error = ENOMEM; break; | |
110 | case ERROR_SWAPERROR: error = ENOENT; break; | |
111 | case ERROR_TOO_MANY_MODULES: error = EMFILE; break; | |
112 | case ERROR_TOO_MANY_OPEN_FILES: error = EMFILE; break; | |
113 | case ERROR_UNRECOGNIZED_MEDIA: error = ENXIO; break; | |
114 | case ERROR_UNRECOGNIZED_VOLUME: error = ENODEV; break; | |
115 | case ERROR_WAIT_NO_CHILDREN: error = ECHILD; break; | |
116 | case ERROR_WRITE_FAULT: error = EIO; break; | |
117 | case ERROR_WRITE_PROTECT: error = EROFS; break; | |
118 | } | |
119 | return error; | |
120 | } | |
121 | ||
122 | static inline int is_file_in_use_error(DWORD errcode) | |
123 | { | |
124 | switch (errcode) { | |
125 | case ERROR_SHARING_VIOLATION: | |
126 | case ERROR_ACCESS_DENIED: | |
127 | return 1; | |
128 | } | |
129 | ||
130 | return 0; | |
131 | } | |
132 | ||
133 | static int read_yes_no_answer(void) | |
134 | { | |
135 | char answer[1024]; | |
136 | ||
137 | if (fgets(answer, sizeof(answer), stdin)) { | |
138 | size_t answer_len = strlen(answer); | |
139 | int got_full_line = 0, c; | |
140 | ||
141 | /* remove the newline */ | |
142 | if (answer_len >= 2 && answer[answer_len-2] == '\r') { | |
143 | answer[answer_len-2] = '\0'; | |
144 | got_full_line = 1; | |
145 | } else if (answer_len >= 1 && answer[answer_len-1] == '\n') { | |
146 | answer[answer_len-1] = '\0'; | |
147 | got_full_line = 1; | |
148 | } | |
149 | /* flush the buffer in case we did not get the full line */ | |
150 | if (!got_full_line) | |
151 | while ((c = getchar()) != EOF && c != '\n') | |
152 | ; | |
153 | } else | |
154 | /* we could not read, return the | |
155 | * default answer which is no */ | |
156 | return 0; | |
157 | ||
158 | if (tolower(answer[0]) == 'y' && !answer[1]) | |
159 | return 1; | |
160 | if (!strncasecmp(answer, "yes", sizeof(answer))) | |
161 | return 1; | |
162 | if (tolower(answer[0]) == 'n' && !answer[1]) | |
163 | return 0; | |
164 | if (!strncasecmp(answer, "no", sizeof(answer))) | |
165 | return 0; | |
166 | ||
167 | /* did not find an answer we understand */ | |
168 | return -1; | |
169 | } | |
170 | ||
171 | static int ask_yes_no_if_possible(const char *format, ...) | |
172 | { | |
173 | char question[4096]; | |
174 | const char *retry_hook[] = { NULL, NULL, NULL }; | |
175 | va_list args; | |
176 | ||
177 | va_start(args, format); | |
178 | vsnprintf(question, sizeof(question), format, args); | |
179 | va_end(args); | |
180 | ||
181 | if ((retry_hook[0] = mingw_getenv("GIT_ASK_YESNO"))) { | |
182 | retry_hook[1] = question; | |
183 | return !run_command_v_opt(retry_hook, 0); | |
184 | } | |
185 | ||
186 | if (!isatty(_fileno(stdin)) || !isatty(_fileno(stderr))) | |
187 | return 0; | |
188 | ||
189 | while (1) { | |
190 | int answer; | |
191 | fprintf(stderr, "%s (y/n) ", question); | |
192 | ||
193 | if ((answer = read_yes_no_answer()) >= 0) | |
194 | return answer; | |
195 | ||
196 | fprintf(stderr, "Sorry, I did not understand your answer. " | |
197 | "Please type 'y' or 'n'\n"); | |
198 | } | |
199 | } | |
200 | ||
201 | #undef unlink | |
202 | int mingw_unlink(const char *pathname) | |
203 | { | |
204 | int ret, tries = 0; | |
205 | ||
206 | /* read-only files cannot be removed */ | |
207 | chmod(pathname, 0666); | |
208 | while ((ret = unlink(pathname)) == -1 && tries < ARRAY_SIZE(delay)) { | |
209 | if (!is_file_in_use_error(GetLastError())) | |
210 | break; | |
211 | /* | |
212 | * We assume that some other process had the source or | |
213 | * destination file open at the wrong moment and retry. | |
214 | * In order to give the other process a higher chance to | |
215 | * complete its operation, we give up our time slice now. | |
216 | * If we have to retry again, we do sleep a bit. | |
217 | */ | |
218 | Sleep(delay[tries]); | |
219 | tries++; | |
220 | } | |
221 | while (ret == -1 && is_file_in_use_error(GetLastError()) && | |
222 | ask_yes_no_if_possible("Unlink of file '%s' failed. " | |
223 | "Should I try again?", pathname)) | |
224 | ret = unlink(pathname); | |
225 | return ret; | |
226 | } | |
227 | ||
228 | static int is_dir_empty(const char *path) | |
229 | { | |
230 | struct strbuf buf = STRBUF_INIT; | |
231 | WIN32_FIND_DATAA findbuf; | |
232 | HANDLE handle; | |
233 | ||
234 | strbuf_addf(&buf, "%s\\*", path); | |
235 | handle = FindFirstFileA(buf.buf, &findbuf); | |
236 | if (handle == INVALID_HANDLE_VALUE) { | |
237 | strbuf_release(&buf); | |
238 | return GetLastError() == ERROR_NO_MORE_FILES; | |
239 | } | |
240 | ||
241 | while (!strcmp(findbuf.cFileName, ".") || | |
242 | !strcmp(findbuf.cFileName, "..")) | |
243 | if (!FindNextFile(handle, &findbuf)) { | |
244 | strbuf_release(&buf); | |
245 | return GetLastError() == ERROR_NO_MORE_FILES; | |
246 | } | |
247 | FindClose(handle); | |
248 | strbuf_release(&buf); | |
249 | return 0; | |
250 | } | |
251 | ||
252 | #undef rmdir | |
253 | int mingw_rmdir(const char *pathname) | |
254 | { | |
255 | int ret, tries = 0; | |
256 | ||
257 | while ((ret = rmdir(pathname)) == -1 && tries < ARRAY_SIZE(delay)) { | |
258 | if (!is_file_in_use_error(GetLastError())) | |
259 | errno = err_win_to_posix(GetLastError()); | |
260 | if (errno != EACCES) | |
261 | break; | |
262 | if (!is_dir_empty(pathname)) { | |
263 | errno = ENOTEMPTY; | |
264 | break; | |
265 | } | |
266 | /* | |
267 | * We assume that some other process had the source or | |
268 | * destination file open at the wrong moment and retry. | |
269 | * In order to give the other process a higher chance to | |
270 | * complete its operation, we give up our time slice now. | |
271 | * If we have to retry again, we do sleep a bit. | |
272 | */ | |
273 | Sleep(delay[tries]); | |
274 | tries++; | |
275 | } | |
276 | while (ret == -1 && errno == EACCES && is_file_in_use_error(GetLastError()) && | |
277 | ask_yes_no_if_possible("Deletion of directory '%s' failed. " | |
278 | "Should I try again?", pathname)) | |
279 | ret = rmdir(pathname); | |
280 | return ret; | |
281 | } | |
282 | ||
283 | #undef open | |
284 | int mingw_open (const char *filename, int oflags, ...) | |
285 | { | |
286 | va_list args; | |
287 | unsigned mode; | |
288 | int fd; | |
289 | ||
290 | va_start(args, oflags); | |
291 | mode = va_arg(args, int); | |
292 | va_end(args); | |
293 | ||
294 | if (filename && !strcmp(filename, "/dev/null")) | |
295 | filename = "nul"; | |
296 | ||
297 | fd = open(filename, oflags, mode); | |
298 | ||
299 | if (fd < 0 && (oflags & O_CREAT) && errno == EACCES) { | |
300 | DWORD attrs = GetFileAttributes(filename); | |
301 | if (attrs != INVALID_FILE_ATTRIBUTES && (attrs & FILE_ATTRIBUTE_DIRECTORY)) | |
302 | errno = EISDIR; | |
303 | } | |
304 | return fd; | |
305 | } | |
306 | ||
307 | #undef write | |
308 | ssize_t mingw_write(int fd, const void *buf, size_t count) | |
309 | { | |
310 | /* | |
311 | * While write() calls to a file on a local disk are translated | |
312 | * into WriteFile() calls with a maximum size of 64KB on Windows | |
313 | * XP and 256KB on Vista, no such cap is placed on writes to | |
314 | * files over the network on Windows XP. Unfortunately, there | |
315 | * seems to be a limit of 32MB-28KB on X64 and 64MB-32KB on x86; | |
316 | * bigger writes fail on Windows XP. | |
317 | * So we cap to a nice 31MB here to avoid write failures over | |
318 | * the net without changing the number of WriteFile() calls in | |
319 | * the local case. | |
320 | */ | |
321 | return write(fd, buf, min(count, 31 * 1024 * 1024)); | |
322 | } | |
323 | ||
324 | static BOOL WINAPI ctrl_ignore(DWORD type) | |
325 | { | |
326 | return TRUE; | |
327 | } | |
328 | ||
329 | #undef fgetc | |
330 | int mingw_fgetc(FILE *stream) | |
331 | { | |
332 | int ch; | |
333 | if (!isatty(_fileno(stream))) | |
334 | return fgetc(stream); | |
335 | ||
336 | SetConsoleCtrlHandler(ctrl_ignore, TRUE); | |
337 | while (1) { | |
338 | ch = fgetc(stream); | |
339 | if (ch != EOF || GetLastError() != ERROR_OPERATION_ABORTED) | |
340 | break; | |
341 | ||
342 | /* Ctrl+C was pressed, simulate SIGINT and retry */ | |
343 | mingw_raise(SIGINT); | |
344 | } | |
345 | SetConsoleCtrlHandler(ctrl_ignore, FALSE); | |
346 | return ch; | |
347 | } | |
348 | ||
349 | #undef fopen | |
350 | FILE *mingw_fopen (const char *filename, const char *otype) | |
351 | { | |
352 | if (filename && !strcmp(filename, "/dev/null")) | |
353 | filename = "nul"; | |
354 | return fopen(filename, otype); | |
355 | } | |
356 | ||
357 | #undef freopen | |
358 | FILE *mingw_freopen (const char *filename, const char *otype, FILE *stream) | |
359 | { | |
360 | if (filename && !strcmp(filename, "/dev/null")) | |
361 | filename = "nul"; | |
362 | return freopen(filename, otype, stream); | |
363 | } | |
364 | ||
365 | #undef fflush | |
366 | int mingw_fflush(FILE *stream) | |
367 | { | |
368 | int ret = fflush(stream); | |
369 | ||
370 | /* | |
371 | * write() is used behind the scenes of stdio output functions. | |
372 | * Since git code does not check for errors after each stdio write | |
373 | * operation, it can happen that write() is called by a later | |
374 | * stdio function even if an earlier write() call failed. In the | |
375 | * case of a pipe whose readable end was closed, only the first | |
376 | * call to write() reports EPIPE on Windows. Subsequent write() | |
377 | * calls report EINVAL. It is impossible to notice whether this | |
378 | * fflush invocation triggered such a case, therefore, we have to | |
379 | * catch all EINVAL errors whole-sale. | |
380 | */ | |
381 | if (ret && errno == EINVAL) | |
382 | errno = EPIPE; | |
383 | ||
384 | return ret; | |
385 | } | |
386 | ||
387 | /* | |
388 | * The unit of FILETIME is 100-nanoseconds since January 1, 1601, UTC. | |
389 | * Returns the 100-nanoseconds ("hekto nanoseconds") since the epoch. | |
390 | */ | |
391 | static inline long long filetime_to_hnsec(const FILETIME *ft) | |
392 | { | |
393 | long long winTime = ((long long)ft->dwHighDateTime << 32) + ft->dwLowDateTime; | |
394 | /* Windows to Unix Epoch conversion */ | |
395 | return winTime - 116444736000000000LL; | |
396 | } | |
397 | ||
398 | static inline time_t filetime_to_time_t(const FILETIME *ft) | |
399 | { | |
400 | return (time_t)(filetime_to_hnsec(ft) / 10000000); | |
401 | } | |
402 | ||
403 | /* We keep the do_lstat code in a separate function to avoid recursion. | |
404 | * When a path ends with a slash, the stat will fail with ENOENT. In | |
405 | * this case, we strip the trailing slashes and stat again. | |
406 | * | |
407 | * If follow is true then act like stat() and report on the link | |
408 | * target. Otherwise report on the link itself. | |
409 | */ | |
410 | static int do_lstat(int follow, const char *file_name, struct stat *buf) | |
411 | { | |
412 | int err; | |
413 | WIN32_FILE_ATTRIBUTE_DATA fdata; | |
414 | ||
415 | if (!(err = get_file_attr(file_name, &fdata))) { | |
416 | buf->st_ino = 0; | |
417 | buf->st_gid = 0; | |
418 | buf->st_uid = 0; | |
419 | buf->st_nlink = 1; | |
420 | buf->st_mode = file_attr_to_st_mode(fdata.dwFileAttributes); | |
421 | buf->st_size = fdata.nFileSizeLow | | |
422 | (((off_t)fdata.nFileSizeHigh)<<32); | |
423 | buf->st_dev = buf->st_rdev = 0; /* not used by Git */ | |
424 | buf->st_atime = filetime_to_time_t(&(fdata.ftLastAccessTime)); | |
425 | buf->st_mtime = filetime_to_time_t(&(fdata.ftLastWriteTime)); | |
426 | buf->st_ctime = filetime_to_time_t(&(fdata.ftCreationTime)); | |
427 | if (fdata.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) { | |
428 | WIN32_FIND_DATAA findbuf; | |
429 | HANDLE handle = FindFirstFileA(file_name, &findbuf); | |
430 | if (handle != INVALID_HANDLE_VALUE) { | |
431 | if ((findbuf.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) && | |
432 | (findbuf.dwReserved0 == IO_REPARSE_TAG_SYMLINK)) { | |
433 | if (follow) { | |
434 | char buffer[MAXIMUM_REPARSE_DATA_BUFFER_SIZE]; | |
435 | buf->st_size = readlink(file_name, buffer, MAXIMUM_REPARSE_DATA_BUFFER_SIZE); | |
436 | } else { | |
437 | buf->st_mode = S_IFLNK; | |
438 | } | |
439 | buf->st_mode |= S_IREAD; | |
440 | if (!(findbuf.dwFileAttributes & FILE_ATTRIBUTE_READONLY)) | |
441 | buf->st_mode |= S_IWRITE; | |
442 | } | |
443 | FindClose(handle); | |
444 | } | |
445 | } | |
446 | return 0; | |
447 | } | |
448 | errno = err; | |
449 | return -1; | |
450 | } | |
451 | ||
452 | /* We provide our own lstat/fstat functions, since the provided | |
453 | * lstat/fstat functions are so slow. These stat functions are | |
454 | * tailored for Git's usage (read: fast), and are not meant to be | |
455 | * complete. Note that Git stat()s are redirected to mingw_lstat() | |
456 | * too, since Windows doesn't really handle symlinks that well. | |
457 | */ | |
458 | static int do_stat_internal(int follow, const char *file_name, struct stat *buf) | |
459 | { | |
460 | int namelen; | |
461 | static char alt_name[PATH_MAX]; | |
462 | ||
463 | if (!do_lstat(follow, file_name, buf)) | |
464 | return 0; | |
465 | ||
466 | /* if file_name ended in a '/', Windows returned ENOENT; | |
467 | * try again without trailing slashes | |
468 | */ | |
469 | if (errno != ENOENT) | |
470 | return -1; | |
471 | ||
472 | namelen = strlen(file_name); | |
473 | if (namelen && file_name[namelen-1] != '/') | |
474 | return -1; | |
475 | while (namelen && file_name[namelen-1] == '/') | |
476 | --namelen; | |
477 | if (!namelen || namelen >= PATH_MAX) | |
478 | return -1; | |
479 | ||
480 | memcpy(alt_name, file_name, namelen); | |
481 | alt_name[namelen] = 0; | |
482 | return do_lstat(follow, alt_name, buf); | |
483 | } | |
484 | ||
485 | int mingw_lstat(const char *file_name, struct stat *buf) | |
486 | { | |
487 | return do_stat_internal(0, file_name, buf); | |
488 | } | |
489 | int mingw_stat(const char *file_name, struct stat *buf) | |
490 | { | |
491 | return do_stat_internal(1, file_name, buf); | |
492 | } | |
493 | ||
494 | #undef fstat | |
495 | int mingw_fstat(int fd, struct stat *buf) | |
496 | { | |
497 | HANDLE fh = (HANDLE)_get_osfhandle(fd); | |
498 | BY_HANDLE_FILE_INFORMATION fdata; | |
499 | ||
500 | if (fh == INVALID_HANDLE_VALUE) { | |
501 | errno = EBADF; | |
502 | return -1; | |
503 | } | |
504 | /* direct non-file handles to MS's fstat() */ | |
505 | if (GetFileType(fh) != FILE_TYPE_DISK) | |
506 | return _fstati64(fd, buf); | |
507 | ||
508 | if (GetFileInformationByHandle(fh, &fdata)) { | |
509 | buf->st_ino = 0; | |
510 | buf->st_gid = 0; | |
511 | buf->st_uid = 0; | |
512 | buf->st_nlink = 1; | |
513 | buf->st_mode = file_attr_to_st_mode(fdata.dwFileAttributes); | |
514 | buf->st_size = fdata.nFileSizeLow | | |
515 | (((off_t)fdata.nFileSizeHigh)<<32); | |
516 | buf->st_dev = buf->st_rdev = 0; /* not used by Git */ | |
517 | buf->st_atime = filetime_to_time_t(&(fdata.ftLastAccessTime)); | |
518 | buf->st_mtime = filetime_to_time_t(&(fdata.ftLastWriteTime)); | |
519 | buf->st_ctime = filetime_to_time_t(&(fdata.ftCreationTime)); | |
520 | return 0; | |
521 | } | |
522 | errno = EBADF; | |
523 | return -1; | |
524 | } | |
525 | ||
526 | static inline void time_t_to_filetime(time_t t, FILETIME *ft) | |
527 | { | |
528 | long long winTime = t * 10000000LL + 116444736000000000LL; | |
529 | ft->dwLowDateTime = winTime; | |
530 | ft->dwHighDateTime = winTime >> 32; | |
531 | } | |
532 | ||
533 | int mingw_utime (const char *file_name, const struct utimbuf *times) | |
534 | { | |
535 | FILETIME mft, aft; | |
536 | int fh, rc; | |
537 | ||
538 | /* must have write permission */ | |
539 | DWORD attrs = GetFileAttributes(file_name); | |
540 | if (attrs != INVALID_FILE_ATTRIBUTES && | |
541 | (attrs & FILE_ATTRIBUTE_READONLY)) { | |
542 | /* ignore errors here; open() will report them */ | |
543 | SetFileAttributes(file_name, attrs & ~FILE_ATTRIBUTE_READONLY); | |
544 | } | |
545 | ||
546 | if ((fh = open(file_name, O_RDWR | O_BINARY)) < 0) { | |
547 | rc = -1; | |
548 | goto revert_attrs; | |
549 | } | |
550 | ||
551 | if (times) { | |
552 | time_t_to_filetime(times->modtime, &mft); | |
553 | time_t_to_filetime(times->actime, &aft); | |
554 | } else { | |
555 | GetSystemTimeAsFileTime(&mft); | |
556 | aft = mft; | |
557 | } | |
558 | if (!SetFileTime((HANDLE)_get_osfhandle(fh), NULL, &aft, &mft)) { | |
559 | errno = EINVAL; | |
560 | rc = -1; | |
561 | } else | |
562 | rc = 0; | |
563 | close(fh); | |
564 | ||
565 | revert_attrs: | |
566 | if (attrs != INVALID_FILE_ATTRIBUTES && | |
567 | (attrs & FILE_ATTRIBUTE_READONLY)) { | |
568 | /* ignore errors again */ | |
569 | SetFileAttributes(file_name, attrs); | |
570 | } | |
571 | return rc; | |
572 | } | |
573 | ||
574 | unsigned int sleep (unsigned int seconds) | |
575 | { | |
576 | Sleep(seconds*1000); | |
577 | return 0; | |
578 | } | |
579 | ||
580 | int mkstemp(char *template) | |
581 | { | |
582 | char *filename = mktemp(template); | |
583 | if (filename == NULL) | |
584 | return -1; | |
585 | return open(filename, O_RDWR | O_CREAT, 0600); | |
586 | } | |
587 | ||
588 | int gettimeofday(struct timeval *tv, void *tz) | |
589 | { | |
590 | FILETIME ft; | |
591 | long long hnsec; | |
592 | ||
593 | GetSystemTimeAsFileTime(&ft); | |
594 | hnsec = filetime_to_hnsec(&ft); | |
595 | tv->tv_sec = hnsec / 10000000; | |
596 | tv->tv_usec = (hnsec % 10000000) / 10; | |
597 | return 0; | |
598 | } | |
599 | ||
600 | int pipe(int filedes[2]) | |
601 | { | |
602 | HANDLE h[2]; | |
603 | ||
604 | /* this creates non-inheritable handles */ | |
605 | if (!CreatePipe(&h[0], &h[1], NULL, 8192)) { | |
606 | errno = err_win_to_posix(GetLastError()); | |
607 | return -1; | |
608 | } | |
609 | filedes[0] = _open_osfhandle((int)h[0], O_NOINHERIT); | |
610 | if (filedes[0] < 0) { | |
611 | CloseHandle(h[0]); | |
612 | CloseHandle(h[1]); | |
613 | return -1; | |
614 | } | |
615 | filedes[1] = _open_osfhandle((int)h[1], O_NOINHERIT); | |
616 | if (filedes[0] < 0) { | |
617 | close(filedes[0]); | |
618 | CloseHandle(h[1]); | |
619 | return -1; | |
620 | } | |
621 | return 0; | |
622 | } | |
623 | ||
624 | struct tm *gmtime_r(const time_t *timep, struct tm *result) | |
625 | { | |
626 | /* gmtime() in MSVCRT.DLL is thread-safe, but not reentrant */ | |
627 | memcpy(result, gmtime(timep), sizeof(struct tm)); | |
628 | return result; | |
629 | } | |
630 | ||
631 | struct tm *localtime_r(const time_t *timep, struct tm *result) | |
632 | { | |
633 | /* localtime() in MSVCRT.DLL is thread-safe, but not reentrant */ | |
634 | memcpy(result, localtime(timep), sizeof(struct tm)); | |
635 | return result; | |
636 | } | |
637 | ||
638 | #undef getcwd | |
639 | char *mingw_getcwd(char *pointer, int len) | |
640 | { | |
641 | int i; | |
642 | char *ret = getcwd(pointer, len); | |
643 | if (!ret) | |
644 | return ret; | |
645 | for (i = 0; pointer[i]; i++) | |
646 | if (pointer[i] == '\\') | |
647 | pointer[i] = '/'; | |
648 | return ret; | |
649 | } | |
650 | ||
651 | /* | |
652 | * See http://msdn2.microsoft.com/en-us/library/17w5ykft(vs.71).aspx | |
653 | * (Parsing C++ Command-Line Arguments) | |
654 | */ | |
655 | static const char *quote_arg(const char *arg) | |
656 | { | |
657 | /* count chars to quote */ | |
658 | int len = 0, n = 0; | |
659 | int force_quotes = 0; | |
660 | char *q, *d; | |
661 | const char *p = arg; | |
662 | if (!*p) force_quotes = 1; | |
663 | while (*p) { | |
664 | if (isspace(*p) || *p == '*' || *p == '?' || *p == '{' || *p == '\'') | |
665 | force_quotes = 1; | |
666 | else if (*p == '"') | |
667 | n++; | |
668 | else if (*p == '\\') { | |
669 | int count = 0; | |
670 | while (*p == '\\') { | |
671 | count++; | |
672 | p++; | |
673 | len++; | |
674 | } | |
675 | if (*p == '"') | |
676 | n += count*2 + 1; | |
677 | continue; | |
678 | } | |
679 | len++; | |
680 | p++; | |
681 | } | |
682 | if (!force_quotes && n == 0) | |
683 | return arg; | |
684 | ||
685 | /* insert \ where necessary */ | |
686 | d = q = xmalloc(len+n+3); | |
687 | *d++ = '"'; | |
688 | while (*arg) { | |
689 | if (*arg == '"') | |
690 | *d++ = '\\'; | |
691 | else if (*arg == '\\') { | |
692 | int count = 0; | |
693 | while (*arg == '\\') { | |
694 | count++; | |
695 | *d++ = *arg++; | |
696 | } | |
697 | if (*arg == '"') { | |
698 | while (count-- > 0) | |
699 | *d++ = '\\'; | |
700 | *d++ = '\\'; | |
701 | } | |
702 | } | |
703 | *d++ = *arg++; | |
704 | } | |
705 | *d++ = '"'; | |
706 | *d++ = 0; | |
707 | return q; | |
708 | } | |
709 | ||
710 | static const char *parse_interpreter(const char *cmd) | |
711 | { | |
712 | static char buf[100]; | |
713 | char *p, *opt; | |
714 | int n, fd; | |
715 | ||
716 | /* don't even try a .exe */ | |
717 | n = strlen(cmd); | |
718 | if (n >= 4 && !strcasecmp(cmd+n-4, ".exe")) | |
719 | return NULL; | |
720 | ||
721 | fd = open(cmd, O_RDONLY); | |
722 | if (fd < 0) | |
723 | return NULL; | |
724 | n = read(fd, buf, sizeof(buf)-1); | |
725 | close(fd); | |
726 | if (n < 4) /* at least '#!/x' and not error */ | |
727 | return NULL; | |
728 | ||
729 | if (buf[0] != '#' || buf[1] != '!') | |
730 | return NULL; | |
731 | buf[n] = '\0'; | |
732 | p = buf + strcspn(buf, "\r\n"); | |
733 | if (!*p) | |
734 | return NULL; | |
735 | ||
736 | *p = '\0'; | |
737 | if (!(p = strrchr(buf+2, '/')) && !(p = strrchr(buf+2, '\\'))) | |
738 | return NULL; | |
739 | /* strip options */ | |
740 | if ((opt = strchr(p+1, ' '))) | |
741 | *opt = '\0'; | |
742 | return p+1; | |
743 | } | |
744 | ||
745 | /* | |
746 | * Splits the PATH into parts. | |
747 | */ | |
748 | static char **get_path_split(void) | |
749 | { | |
750 | char *p, **path, *envpath = mingw_getenv("PATH"); | |
751 | int i, n = 0; | |
752 | ||
753 | if (!envpath || !*envpath) | |
754 | return NULL; | |
755 | ||
756 | envpath = xstrdup(envpath); | |
757 | p = envpath; | |
758 | while (p) { | |
759 | char *dir = p; | |
760 | p = strchr(p, ';'); | |
761 | if (p) *p++ = '\0'; | |
762 | if (*dir) { /* not earlier, catches series of ; */ | |
763 | ++n; | |
764 | } | |
765 | } | |
766 | if (!n) | |
767 | return NULL; | |
768 | ||
769 | path = xmalloc((n+1)*sizeof(char *)); | |
770 | p = envpath; | |
771 | i = 0; | |
772 | do { | |
773 | if (*p) | |
774 | path[i++] = xstrdup(p); | |
775 | p = p+strlen(p)+1; | |
776 | } while (i < n); | |
777 | path[i] = NULL; | |
778 | ||
779 | free(envpath); | |
780 | ||
781 | return path; | |
782 | } | |
783 | ||
784 | static void free_path_split(char **path) | |
785 | { | |
786 | char **p = path; | |
787 | ||
788 | if (!path) | |
789 | return; | |
790 | ||
791 | while (*p) | |
792 | free(*p++); | |
793 | free(path); | |
794 | } | |
795 | ||
796 | /* | |
797 | * exe_only means that we only want to detect .exe files, but not scripts | |
798 | * (which do not have an extension) | |
799 | */ | |
800 | static char *lookup_prog(const char *dir, const char *cmd, int isexe, int exe_only) | |
801 | { | |
802 | char path[MAX_PATH]; | |
803 | snprintf(path, sizeof(path), "%s/%s.exe", dir, cmd); | |
804 | ||
805 | if (!isexe && access(path, F_OK) == 0) | |
806 | return xstrdup(path); | |
807 | path[strlen(path)-4] = '\0'; | |
808 | if ((!exe_only || isexe) && access(path, F_OK) == 0) | |
809 | if (!(GetFileAttributes(path) & FILE_ATTRIBUTE_DIRECTORY)) | |
810 | return xstrdup(path); | |
811 | return NULL; | |
812 | } | |
813 | ||
814 | /* | |
815 | * Determines the absolute path of cmd using the split path in path. | |
816 | * If cmd contains a slash or backslash, no lookup is performed. | |
817 | */ | |
818 | static char *path_lookup(const char *cmd, char **path, int exe_only) | |
819 | { | |
820 | char *prog = NULL; | |
821 | int len = strlen(cmd); | |
822 | int isexe = len >= 4 && !strcasecmp(cmd+len-4, ".exe"); | |
823 | ||
824 | if (strchr(cmd, '/') || strchr(cmd, '\\')) | |
825 | prog = xstrdup(cmd); | |
826 | ||
827 | while (!prog && *path) | |
828 | prog = lookup_prog(*path++, cmd, isexe, exe_only); | |
829 | ||
830 | return prog; | |
831 | } | |
832 | ||
833 | static int env_compare(const void *a, const void *b) | |
834 | { | |
835 | char *const *ea = a; | |
836 | char *const *eb = b; | |
837 | return strcasecmp(*ea, *eb); | |
838 | } | |
839 | ||
840 | struct pinfo_t { | |
841 | struct pinfo_t *next; | |
842 | pid_t pid; | |
843 | HANDLE proc; | |
844 | } pinfo_t; | |
845 | struct pinfo_t *pinfo = NULL; | |
846 | CRITICAL_SECTION pinfo_cs; | |
847 | ||
848 | static pid_t mingw_spawnve_fd(const char *cmd, const char **argv, char **env, | |
849 | const char *dir, | |
850 | int prepend_cmd, int fhin, int fhout, int fherr) | |
851 | { | |
852 | STARTUPINFO si; | |
853 | PROCESS_INFORMATION pi; | |
854 | struct strbuf envblk, args; | |
855 | unsigned flags; | |
856 | BOOL ret; | |
857 | ||
858 | /* Determine whether or not we are associated to a console */ | |
859 | HANDLE cons = CreateFile("CONOUT$", GENERIC_WRITE, | |
860 | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, | |
861 | FILE_ATTRIBUTE_NORMAL, NULL); | |
862 | if (cons == INVALID_HANDLE_VALUE) { | |
863 | /* There is no console associated with this process. | |
864 | * Since the child is a console process, Windows | |
865 | * would normally create a console window. But | |
866 | * since we'll be redirecting std streams, we do | |
867 | * not need the console. | |
868 | * It is necessary to use DETACHED_PROCESS | |
869 | * instead of CREATE_NO_WINDOW to make ssh | |
870 | * recognize that it has no console. | |
871 | */ | |
872 | flags = DETACHED_PROCESS; | |
873 | } else { | |
874 | /* There is already a console. If we specified | |
875 | * DETACHED_PROCESS here, too, Windows would | |
876 | * disassociate the child from the console. | |
877 | * The same is true for CREATE_NO_WINDOW. | |
878 | * Go figure! | |
879 | */ | |
880 | flags = 0; | |
881 | CloseHandle(cons); | |
882 | } | |
883 | memset(&si, 0, sizeof(si)); | |
884 | si.cb = sizeof(si); | |
885 | si.dwFlags = STARTF_USESTDHANDLES; | |
886 | si.hStdInput = (HANDLE) _get_osfhandle(fhin); | |
887 | si.hStdOutput = (HANDLE) _get_osfhandle(fhout); | |
888 | si.hStdError = (HANDLE) _get_osfhandle(fherr); | |
889 | ||
890 | /* concatenate argv, quoting args as we go */ | |
891 | strbuf_init(&args, 0); | |
892 | if (prepend_cmd) { | |
893 | char *quoted = (char *)quote_arg(cmd); | |
894 | strbuf_addstr(&args, quoted); | |
895 | if (quoted != cmd) | |
896 | free(quoted); | |
897 | } | |
898 | for (; *argv; argv++) { | |
899 | char *quoted = (char *)quote_arg(*argv); | |
900 | if (*args.buf) | |
901 | strbuf_addch(&args, ' '); | |
902 | strbuf_addstr(&args, quoted); | |
903 | if (quoted != *argv) | |
904 | free(quoted); | |
905 | } | |
906 | ||
907 | if (env) { | |
908 | int count = 0; | |
909 | char **e, **sorted_env; | |
910 | ||
911 | for (e = env; *e; e++) | |
912 | count++; | |
913 | ||
914 | /* environment must be sorted */ | |
915 | sorted_env = xmalloc(sizeof(*sorted_env) * (count + 1)); | |
916 | memcpy(sorted_env, env, sizeof(*sorted_env) * (count + 1)); | |
917 | qsort(sorted_env, count, sizeof(*sorted_env), env_compare); | |
918 | ||
919 | strbuf_init(&envblk, 0); | |
920 | for (e = sorted_env; *e; e++) { | |
921 | strbuf_addstr(&envblk, *e); | |
922 | strbuf_addch(&envblk, '\0'); | |
923 | } | |
924 | free(sorted_env); | |
925 | } | |
926 | ||
927 | memset(&pi, 0, sizeof(pi)); | |
928 | ret = CreateProcess(cmd, args.buf, NULL, NULL, TRUE, flags, | |
929 | env ? envblk.buf : NULL, dir, &si, &pi); | |
930 | ||
931 | if (env) | |
932 | strbuf_release(&envblk); | |
933 | strbuf_release(&args); | |
934 | ||
935 | if (!ret) { | |
936 | errno = ENOENT; | |
937 | return -1; | |
938 | } | |
939 | CloseHandle(pi.hThread); | |
940 | ||
941 | /* | |
942 | * The process ID is the human-readable identifier of the process | |
943 | * that we want to present in log and error messages. The handle | |
944 | * is not useful for this purpose. But we cannot close it, either, | |
945 | * because it is not possible to turn a process ID into a process | |
946 | * handle after the process terminated. | |
947 | * Keep the handle in a list for waitpid. | |
948 | */ | |
949 | EnterCriticalSection(&pinfo_cs); | |
950 | { | |
951 | struct pinfo_t *info = xmalloc(sizeof(struct pinfo_t)); | |
952 | info->pid = pi.dwProcessId; | |
953 | info->proc = pi.hProcess; | |
954 | info->next = pinfo; | |
955 | pinfo = info; | |
956 | } | |
957 | LeaveCriticalSection(&pinfo_cs); | |
958 | ||
959 | return (pid_t)pi.dwProcessId; | |
960 | } | |
961 | ||
962 | static pid_t mingw_spawnve(const char *cmd, const char **argv, char **env, | |
963 | int prepend_cmd) | |
964 | { | |
965 | return mingw_spawnve_fd(cmd, argv, env, NULL, prepend_cmd, 0, 1, 2); | |
966 | } | |
967 | ||
968 | pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **env, | |
969 | const char *dir, | |
970 | int fhin, int fhout, int fherr) | |
971 | { | |
972 | pid_t pid; | |
973 | char **path = get_path_split(); | |
974 | char *prog = path_lookup(cmd, path, 0); | |
975 | ||
976 | if (!prog) { | |
977 | errno = ENOENT; | |
978 | pid = -1; | |
979 | } | |
980 | else { | |
981 | const char *interpr = parse_interpreter(prog); | |
982 | ||
983 | if (interpr) { | |
984 | const char *argv0 = argv[0]; | |
985 | char *iprog = path_lookup(interpr, path, 1); | |
986 | argv[0] = prog; | |
987 | if (!iprog) { | |
988 | errno = ENOENT; | |
989 | pid = -1; | |
990 | } | |
991 | else { | |
992 | pid = mingw_spawnve_fd(iprog, argv, env, dir, 1, | |
993 | fhin, fhout, fherr); | |
994 | free(iprog); | |
995 | } | |
996 | argv[0] = argv0; | |
997 | } | |
998 | else | |
999 | pid = mingw_spawnve_fd(prog, argv, env, dir, 0, | |
1000 | fhin, fhout, fherr); | |
1001 | free(prog); | |
1002 | } | |
1003 | free_path_split(path); | |
1004 | return pid; | |
1005 | } | |
1006 | ||
1007 | static int try_shell_exec(const char *cmd, char *const *argv, char **env) | |
1008 | { | |
1009 | const char *interpr = parse_interpreter(cmd); | |
1010 | char **path; | |
1011 | char *prog; | |
1012 | int pid = 0; | |
1013 | ||
1014 | if (!interpr) | |
1015 | return 0; | |
1016 | path = get_path_split(); | |
1017 | prog = path_lookup(interpr, path, 1); | |
1018 | if (prog) { | |
1019 | int argc = 0; | |
1020 | const char **argv2; | |
1021 | while (argv[argc]) argc++; | |
1022 | argv2 = xmalloc(sizeof(*argv) * (argc+1)); | |
1023 | argv2[0] = (char *)cmd; /* full path to the script file */ | |
1024 | memcpy(&argv2[1], &argv[1], sizeof(*argv) * argc); | |
1025 | pid = mingw_spawnve(prog, argv2, env, 1); | |
1026 | if (pid >= 0) { | |
1027 | int status; | |
1028 | if (waitpid(pid, &status, 0) < 0) | |
1029 | status = 255; | |
1030 | exit(status); | |
1031 | } | |
1032 | pid = 1; /* indicate that we tried but failed */ | |
1033 | free(prog); | |
1034 | free(argv2); | |
1035 | } | |
1036 | free_path_split(path); | |
1037 | return pid; | |
1038 | } | |
1039 | ||
1040 | static void mingw_execve(const char *cmd, char *const *argv, char *const *env) | |
1041 | { | |
1042 | /* check if git_command is a shell script */ | |
1043 | if (!try_shell_exec(cmd, argv, (char **)env)) { | |
1044 | int pid, status; | |
1045 | ||
1046 | pid = mingw_spawnve(cmd, (const char **)argv, (char **)env, 0); | |
1047 | if (pid < 0) | |
1048 | return; | |
1049 | if (waitpid(pid, &status, 0) < 0) | |
1050 | status = 255; | |
1051 | exit(status); | |
1052 | } | |
1053 | } | |
1054 | ||
1055 | int mingw_execvp(const char *cmd, char *const *argv) | |
1056 | { | |
1057 | char **path = get_path_split(); | |
1058 | char *prog = path_lookup(cmd, path, 0); | |
1059 | ||
1060 | if (prog) { | |
1061 | mingw_execve(prog, argv, environ); | |
1062 | free(prog); | |
1063 | } else | |
1064 | errno = ENOENT; | |
1065 | ||
1066 | free_path_split(path); | |
1067 | return -1; | |
1068 | } | |
1069 | ||
1070 | int mingw_execv(const char *cmd, char *const *argv) | |
1071 | { | |
1072 | mingw_execve(cmd, argv, environ); | |
1073 | return -1; | |
1074 | } | |
1075 | ||
1076 | int mingw_kill(pid_t pid, int sig) | |
1077 | { | |
1078 | if (pid > 0 && sig == SIGTERM) { | |
1079 | HANDLE h = OpenProcess(PROCESS_TERMINATE, FALSE, pid); | |
1080 | ||
1081 | if (TerminateProcess(h, -1)) { | |
1082 | CloseHandle(h); | |
1083 | return 0; | |
1084 | } | |
1085 | ||
1086 | errno = err_win_to_posix(GetLastError()); | |
1087 | CloseHandle(h); | |
1088 | return -1; | |
1089 | } | |
1090 | ||
1091 | errno = EINVAL; | |
1092 | return -1; | |
1093 | } | |
1094 | ||
1095 | static char **copy_environ(void) | |
1096 | { | |
1097 | char **env; | |
1098 | int i = 0; | |
1099 | while (environ[i]) | |
1100 | i++; | |
1101 | env = xmalloc((i+1)*sizeof(*env)); | |
1102 | for (i = 0; environ[i]; i++) | |
1103 | env[i] = xstrdup(environ[i]); | |
1104 | env[i] = NULL; | |
1105 | return env; | |
1106 | } | |
1107 | ||
1108 | void free_environ(char **env) | |
1109 | { | |
1110 | int i; | |
1111 | for (i = 0; env[i]; i++) | |
1112 | free(env[i]); | |
1113 | free(env); | |
1114 | } | |
1115 | ||
1116 | static int lookup_env(char **env, const char *name, size_t nmln) | |
1117 | { | |
1118 | int i; | |
1119 | ||
1120 | for (i = 0; env[i]; i++) { | |
1121 | if (0 == strncmp(env[i], name, nmln) | |
1122 | && '=' == env[i][nmln]) | |
1123 | /* matches */ | |
1124 | return i; | |
1125 | } | |
1126 | return -1; | |
1127 | } | |
1128 | ||
1129 | /* | |
1130 | * If name contains '=', then sets the variable, otherwise it unsets it | |
1131 | */ | |
1132 | static char **env_setenv(char **env, const char *name) | |
1133 | { | |
1134 | char *eq = strchrnul(name, '='); | |
1135 | int i = lookup_env(env, name, eq-name); | |
1136 | ||
1137 | if (i < 0) { | |
1138 | if (*eq) { | |
1139 | for (i = 0; env[i]; i++) | |
1140 | ; | |
1141 | env = xrealloc(env, (i+2)*sizeof(*env)); | |
1142 | env[i] = xstrdup(name); | |
1143 | env[i+1] = NULL; | |
1144 | } | |
1145 | } | |
1146 | else { | |
1147 | free(env[i]); | |
1148 | if (*eq) | |
1149 | env[i] = xstrdup(name); | |
1150 | else | |
1151 | for (; env[i]; i++) | |
1152 | env[i] = env[i+1]; | |
1153 | } | |
1154 | return env; | |
1155 | } | |
1156 | ||
1157 | /* | |
1158 | * Copies global environ and adjusts variables as specified by vars. | |
1159 | */ | |
1160 | char **make_augmented_environ(const char *const *vars) | |
1161 | { | |
1162 | char **env = copy_environ(); | |
1163 | ||
1164 | while (*vars) | |
1165 | env = env_setenv(env, *vars++); | |
1166 | return env; | |
1167 | } | |
1168 | ||
1169 | #undef getenv | |
1170 | ||
1171 | /* | |
1172 | * The system's getenv looks up the name in a case-insensitive manner. | |
1173 | * This version tries a case-sensitive lookup and falls back to | |
1174 | * case-insensitive if nothing was found. This is necessary because, | |
1175 | * as a prominent example, CMD sets 'Path', but not 'PATH'. | |
1176 | * Warning: not thread-safe. | |
1177 | */ | |
1178 | static char *getenv_cs(const char *name) | |
1179 | { | |
1180 | size_t len = strlen(name); | |
1181 | int i = lookup_env(environ, name, len); | |
1182 | if (i >= 0) | |
1183 | return environ[i] + len + 1; /* skip past name and '=' */ | |
1184 | return getenv(name); | |
1185 | } | |
1186 | ||
1187 | char *mingw_getenv(const char *name) | |
1188 | { | |
1189 | char *result = getenv_cs(name); | |
1190 | if (!result && !strcmp(name, "TMPDIR")) { | |
1191 | /* on Windows it is TMP and TEMP */ | |
1192 | result = getenv_cs("TMP"); | |
1193 | if (!result) | |
1194 | result = getenv_cs("TEMP"); | |
1195 | } | |
1196 | return result; | |
1197 | } | |
1198 | ||
1199 | /* | |
1200 | * Note, this isn't a complete replacement for getaddrinfo. It assumes | |
1201 | * that service contains a numerical port, or that it is null. It | |
1202 | * does a simple search using gethostbyname, and returns one IPv4 host | |
1203 | * if one was found. | |
1204 | */ | |
1205 | static int WSAAPI getaddrinfo_stub(const char *node, const char *service, | |
1206 | const struct addrinfo *hints, | |
1207 | struct addrinfo **res) | |
1208 | { | |
1209 | struct hostent *h = NULL; | |
1210 | struct addrinfo *ai; | |
1211 | struct sockaddr_in *sin; | |
1212 | ||
1213 | if (node) { | |
1214 | h = gethostbyname(node); | |
1215 | if (!h) | |
1216 | return WSAGetLastError(); | |
1217 | } | |
1218 | ||
1219 | ai = xmalloc(sizeof(struct addrinfo)); | |
1220 | *res = ai; | |
1221 | ai->ai_flags = 0; | |
1222 | ai->ai_family = AF_INET; | |
1223 | ai->ai_socktype = hints ? hints->ai_socktype : 0; | |
1224 | switch (ai->ai_socktype) { | |
1225 | case SOCK_STREAM: | |
1226 | ai->ai_protocol = IPPROTO_TCP; | |
1227 | break; | |
1228 | case SOCK_DGRAM: | |
1229 | ai->ai_protocol = IPPROTO_UDP; | |
1230 | break; | |
1231 | default: | |
1232 | ai->ai_protocol = 0; | |
1233 | break; | |
1234 | } | |
1235 | ai->ai_addrlen = sizeof(struct sockaddr_in); | |
1236 | if (hints && (hints->ai_flags & AI_CANONNAME)) | |
1237 | ai->ai_canonname = h ? xstrdup(h->h_name) : NULL; | |
1238 | else | |
1239 | ai->ai_canonname = NULL; | |
1240 | ||
1241 | sin = xmalloc(ai->ai_addrlen); | |
1242 | memset(sin, 0, ai->ai_addrlen); | |
1243 | sin->sin_family = AF_INET; | |
1244 | /* Note: getaddrinfo is supposed to allow service to be a string, | |
1245 | * which should be looked up using getservbyname. This is | |
1246 | * currently not implemented */ | |
1247 | if (service) | |
1248 | sin->sin_port = htons(atoi(service)); | |
1249 | if (h) | |
1250 | sin->sin_addr = *(struct in_addr *)h->h_addr; | |
1251 | else if (hints && (hints->ai_flags & AI_PASSIVE)) | |
1252 | sin->sin_addr.s_addr = INADDR_ANY; | |
1253 | else | |
1254 | sin->sin_addr.s_addr = INADDR_LOOPBACK; | |
1255 | ai->ai_addr = (struct sockaddr *)sin; | |
1256 | ai->ai_next = 0; | |
1257 | return 0; | |
1258 | } | |
1259 | ||
1260 | static void WSAAPI freeaddrinfo_stub(struct addrinfo *res) | |
1261 | { | |
1262 | free(res->ai_canonname); | |
1263 | free(res->ai_addr); | |
1264 | free(res); | |
1265 | } | |
1266 | ||
1267 | static int WSAAPI getnameinfo_stub(const struct sockaddr *sa, socklen_t salen, | |
1268 | char *host, DWORD hostlen, | |
1269 | char *serv, DWORD servlen, int flags) | |
1270 | { | |
1271 | const struct sockaddr_in *sin = (const struct sockaddr_in *)sa; | |
1272 | if (sa->sa_family != AF_INET) | |
1273 | return EAI_FAMILY; | |
1274 | if (!host && !serv) | |
1275 | return EAI_NONAME; | |
1276 | ||
1277 | if (host && hostlen > 0) { | |
1278 | struct hostent *ent = NULL; | |
1279 | if (!(flags & NI_NUMERICHOST)) | |
1280 | ent = gethostbyaddr((const char *)&sin->sin_addr, | |
1281 | sizeof(sin->sin_addr), AF_INET); | |
1282 | ||
1283 | if (ent) | |
1284 | snprintf(host, hostlen, "%s", ent->h_name); | |
1285 | else if (flags & NI_NAMEREQD) | |
1286 | return EAI_NONAME; | |
1287 | else | |
1288 | snprintf(host, hostlen, "%s", inet_ntoa(sin->sin_addr)); | |
1289 | } | |
1290 | ||
1291 | if (serv && servlen > 0) { | |
1292 | struct servent *ent = NULL; | |
1293 | if (!(flags & NI_NUMERICSERV)) | |
1294 | ent = getservbyport(sin->sin_port, | |
1295 | flags & NI_DGRAM ? "udp" : "tcp"); | |
1296 | ||
1297 | if (ent) | |
1298 | snprintf(serv, servlen, "%s", ent->s_name); | |
1299 | else | |
1300 | snprintf(serv, servlen, "%d", ntohs(sin->sin_port)); | |
1301 | } | |
1302 | ||
1303 | return 0; | |
1304 | } | |
1305 | ||
1306 | static HMODULE ipv6_dll = NULL; | |
1307 | static void (WSAAPI *ipv6_freeaddrinfo)(struct addrinfo *res); | |
1308 | static int (WSAAPI *ipv6_getaddrinfo)(const char *node, const char *service, | |
1309 | const struct addrinfo *hints, | |
1310 | struct addrinfo **res); | |
1311 | static int (WSAAPI *ipv6_getnameinfo)(const struct sockaddr *sa, socklen_t salen, | |
1312 | char *host, DWORD hostlen, | |
1313 | char *serv, DWORD servlen, int flags); | |
1314 | /* | |
1315 | * gai_strerror is an inline function in the ws2tcpip.h header, so we | |
1316 | * don't need to try to load that one dynamically. | |
1317 | */ | |
1318 | ||
1319 | static void socket_cleanup(void) | |
1320 | { | |
1321 | WSACleanup(); | |
1322 | if (ipv6_dll) | |
1323 | FreeLibrary(ipv6_dll); | |
1324 | ipv6_dll = NULL; | |
1325 | ipv6_freeaddrinfo = freeaddrinfo_stub; | |
1326 | ipv6_getaddrinfo = getaddrinfo_stub; | |
1327 | ipv6_getnameinfo = getnameinfo_stub; | |
1328 | } | |
1329 | ||
1330 | static void ensure_socket_initialization(void) | |
1331 | { | |
1332 | WSADATA wsa; | |
1333 | static int initialized = 0; | |
1334 | const char *libraries[] = { "ws2_32.dll", "wship6.dll", NULL }; | |
1335 | const char **name; | |
1336 | ||
1337 | if (initialized) | |
1338 | return; | |
1339 | ||
1340 | if (WSAStartup(MAKEWORD(2,2), &wsa)) | |
1341 | die("unable to initialize winsock subsystem, error %d", | |
1342 | WSAGetLastError()); | |
1343 | ||
1344 | for (name = libraries; *name; name++) { | |
1345 | ipv6_dll = LoadLibrary(*name); | |
1346 | if (!ipv6_dll) | |
1347 | continue; | |
1348 | ||
1349 | ipv6_freeaddrinfo = (void (WSAAPI *)(struct addrinfo *)) | |
1350 | GetProcAddress(ipv6_dll, "freeaddrinfo"); | |
1351 | ipv6_getaddrinfo = (int (WSAAPI *)(const char *, const char *, | |
1352 | const struct addrinfo *, | |
1353 | struct addrinfo **)) | |
1354 | GetProcAddress(ipv6_dll, "getaddrinfo"); | |
1355 | ipv6_getnameinfo = (int (WSAAPI *)(const struct sockaddr *, | |
1356 | socklen_t, char *, DWORD, | |
1357 | char *, DWORD, int)) | |
1358 | GetProcAddress(ipv6_dll, "getnameinfo"); | |
1359 | if (!ipv6_freeaddrinfo || !ipv6_getaddrinfo || !ipv6_getnameinfo) { | |
1360 | FreeLibrary(ipv6_dll); | |
1361 | ipv6_dll = NULL; | |
1362 | } else | |
1363 | break; | |
1364 | } | |
1365 | if (!ipv6_freeaddrinfo || !ipv6_getaddrinfo || !ipv6_getnameinfo) { | |
1366 | ipv6_freeaddrinfo = freeaddrinfo_stub; | |
1367 | ipv6_getaddrinfo = getaddrinfo_stub; | |
1368 | ipv6_getnameinfo = getnameinfo_stub; | |
1369 | } | |
1370 | ||
1371 | atexit(socket_cleanup); | |
1372 | initialized = 1; | |
1373 | } | |
1374 | ||
1375 | #undef gethostname | |
1376 | int mingw_gethostname(char *name, int namelen) | |
1377 | { | |
1378 | ensure_socket_initialization(); | |
1379 | return gethostname(name, namelen); | |
1380 | } | |
1381 | ||
1382 | #undef gethostbyname | |
1383 | struct hostent *mingw_gethostbyname(const char *host) | |
1384 | { | |
1385 | ensure_socket_initialization(); | |
1386 | return gethostbyname(host); | |
1387 | } | |
1388 | ||
1389 | void mingw_freeaddrinfo(struct addrinfo *res) | |
1390 | { | |
1391 | ipv6_freeaddrinfo(res); | |
1392 | } | |
1393 | ||
1394 | int mingw_getaddrinfo(const char *node, const char *service, | |
1395 | const struct addrinfo *hints, struct addrinfo **res) | |
1396 | { | |
1397 | ensure_socket_initialization(); | |
1398 | return ipv6_getaddrinfo(node, service, hints, res); | |
1399 | } | |
1400 | ||
1401 | int mingw_getnameinfo(const struct sockaddr *sa, socklen_t salen, | |
1402 | char *host, DWORD hostlen, char *serv, DWORD servlen, | |
1403 | int flags) | |
1404 | { | |
1405 | ensure_socket_initialization(); | |
1406 | return ipv6_getnameinfo(sa, salen, host, hostlen, serv, servlen, flags); | |
1407 | } | |
1408 | ||
1409 | int mingw_socket(int domain, int type, int protocol) | |
1410 | { | |
1411 | int sockfd; | |
1412 | SOCKET s; | |
1413 | ||
1414 | ensure_socket_initialization(); | |
1415 | s = WSASocket(domain, type, protocol, NULL, 0, 0); | |
1416 | if (s == INVALID_SOCKET) { | |
1417 | /* | |
1418 | * WSAGetLastError() values are regular BSD error codes | |
1419 | * biased by WSABASEERR. | |
1420 | * However, strerror() does not know about networking | |
1421 | * specific errors, which are values beginning at 38 or so. | |
1422 | * Therefore, we choose to leave the biased error code | |
1423 | * in errno so that _if_ someone looks up the code somewhere, | |
1424 | * then it is at least the number that are usually listed. | |
1425 | */ | |
1426 | errno = WSAGetLastError(); | |
1427 | return -1; | |
1428 | } | |
1429 | /* convert into a file descriptor */ | |
1430 | if ((sockfd = _open_osfhandle(s, O_RDWR|O_BINARY)) < 0) { | |
1431 | closesocket(s); | |
1432 | return error("unable to make a socket file descriptor: %s", | |
1433 | strerror(errno)); | |
1434 | } | |
1435 | return sockfd; | |
1436 | } | |
1437 | ||
1438 | #undef connect | |
1439 | int mingw_connect(int sockfd, struct sockaddr *sa, size_t sz) | |
1440 | { | |
1441 | SOCKET s = (SOCKET)_get_osfhandle(sockfd); | |
1442 | return connect(s, sa, sz); | |
1443 | } | |
1444 | ||
1445 | #undef bind | |
1446 | int mingw_bind(int sockfd, struct sockaddr *sa, size_t sz) | |
1447 | { | |
1448 | SOCKET s = (SOCKET)_get_osfhandle(sockfd); | |
1449 | return bind(s, sa, sz); | |
1450 | } | |
1451 | ||
1452 | #undef setsockopt | |
1453 | int mingw_setsockopt(int sockfd, int lvl, int optname, void *optval, int optlen) | |
1454 | { | |
1455 | SOCKET s = (SOCKET)_get_osfhandle(sockfd); | |
1456 | return setsockopt(s, lvl, optname, (const char*)optval, optlen); | |
1457 | } | |
1458 | ||
1459 | #undef shutdown | |
1460 | int mingw_shutdown(int sockfd, int how) | |
1461 | { | |
1462 | SOCKET s = (SOCKET)_get_osfhandle(sockfd); | |
1463 | return shutdown(s, how); | |
1464 | } | |
1465 | ||
1466 | #undef listen | |
1467 | int mingw_listen(int sockfd, int backlog) | |
1468 | { | |
1469 | SOCKET s = (SOCKET)_get_osfhandle(sockfd); | |
1470 | return listen(s, backlog); | |
1471 | } | |
1472 | ||
1473 | #undef accept | |
1474 | int mingw_accept(int sockfd1, struct sockaddr *sa, socklen_t *sz) | |
1475 | { | |
1476 | int sockfd2; | |
1477 | ||
1478 | SOCKET s1 = (SOCKET)_get_osfhandle(sockfd1); | |
1479 | SOCKET s2 = accept(s1, sa, sz); | |
1480 | ||
1481 | /* convert into a file descriptor */ | |
1482 | if ((sockfd2 = _open_osfhandle(s2, O_RDWR|O_BINARY)) < 0) { | |
1483 | int err = errno; | |
1484 | closesocket(s2); | |
1485 | return error("unable to make a socket file descriptor: %s", | |
1486 | strerror(err)); | |
1487 | } | |
1488 | return sockfd2; | |
1489 | } | |
1490 | ||
1491 | #undef rename | |
1492 | int mingw_rename(const char *pold, const char *pnew) | |
1493 | { | |
1494 | DWORD attrs, gle; | |
1495 | int tries = 0; | |
1496 | ||
1497 | /* | |
1498 | * Try native rename() first to get errno right. | |
1499 | * It is based on MoveFile(), which cannot overwrite existing files. | |
1500 | */ | |
1501 | if (!rename(pold, pnew)) | |
1502 | return 0; | |
1503 | if (errno != EEXIST) | |
1504 | return -1; | |
1505 | repeat: | |
1506 | if (MoveFileEx(pold, pnew, MOVEFILE_REPLACE_EXISTING)) | |
1507 | return 0; | |
1508 | /* TODO: translate more errors */ | |
1509 | gle = GetLastError(); | |
1510 | if (gle == ERROR_ACCESS_DENIED && | |
1511 | (attrs = GetFileAttributes(pnew)) != INVALID_FILE_ATTRIBUTES) { | |
1512 | if (attrs & FILE_ATTRIBUTE_DIRECTORY) { | |
1513 | errno = EISDIR; | |
1514 | return -1; | |
1515 | } | |
1516 | if ((attrs & FILE_ATTRIBUTE_READONLY) && | |
1517 | SetFileAttributes(pnew, attrs & ~FILE_ATTRIBUTE_READONLY)) { | |
1518 | if (MoveFileEx(pold, pnew, MOVEFILE_REPLACE_EXISTING)) | |
1519 | return 0; | |
1520 | gle = GetLastError(); | |
1521 | /* revert file attributes on failure */ | |
1522 | SetFileAttributes(pnew, attrs); | |
1523 | } | |
1524 | } | |
1525 | if (tries < ARRAY_SIZE(delay) && gle == ERROR_ACCESS_DENIED) { | |
1526 | /* | |
1527 | * We assume that some other process had the source or | |
1528 | * destination file open at the wrong moment and retry. | |
1529 | * In order to give the other process a higher chance to | |
1530 | * complete its operation, we give up our time slice now. | |
1531 | * If we have to retry again, we do sleep a bit. | |
1532 | */ | |
1533 | Sleep(delay[tries]); | |
1534 | tries++; | |
1535 | goto repeat; | |
1536 | } | |
1537 | if (gle == ERROR_ACCESS_DENIED && | |
1538 | ask_yes_no_if_possible("Rename from '%s' to '%s' failed. " | |
1539 | "Should I try again?", pold, pnew)) | |
1540 | goto repeat; | |
1541 | ||
1542 | errno = EACCES; | |
1543 | return -1; | |
1544 | } | |
1545 | ||
1546 | /* | |
1547 | * Note that this doesn't return the actual pagesize, but | |
1548 | * the allocation granularity. If future Windows specific git code | |
1549 | * needs the real getpagesize function, we need to find another solution. | |
1550 | */ | |
1551 | int mingw_getpagesize(void) | |
1552 | { | |
1553 | SYSTEM_INFO si; | |
1554 | GetSystemInfo(&si); | |
1555 | return si.dwAllocationGranularity; | |
1556 | } | |
1557 | ||
1558 | struct passwd *getpwuid(int uid) | |
1559 | { | |
1560 | static char user_name[100]; | |
1561 | static struct passwd p; | |
1562 | ||
1563 | DWORD len = sizeof(user_name); | |
1564 | if (!GetUserName(user_name, &len)) | |
1565 | return NULL; | |
1566 | p.pw_name = user_name; | |
1567 | p.pw_gecos = "unknown"; | |
1568 | p.pw_dir = NULL; | |
1569 | return &p; | |
1570 | } | |
1571 | ||
1572 | static HANDLE timer_event; | |
1573 | static HANDLE timer_thread; | |
1574 | static int timer_interval; | |
1575 | static int one_shot; | |
1576 | static sig_handler_t timer_fn = SIG_DFL, sigint_fn = SIG_DFL; | |
1577 | ||
1578 | /* The timer works like this: | |
1579 | * The thread, ticktack(), is a trivial routine that most of the time | |
1580 | * only waits to receive the signal to terminate. The main thread tells | |
1581 | * the thread to terminate by setting the timer_event to the signalled | |
1582 | * state. | |
1583 | * But ticktack() interrupts the wait state after the timer's interval | |
1584 | * length to call the signal handler. | |
1585 | */ | |
1586 | ||
1587 | static unsigned __stdcall ticktack(void *dummy) | |
1588 | { | |
1589 | while (WaitForSingleObject(timer_event, timer_interval) == WAIT_TIMEOUT) { | |
1590 | mingw_raise(SIGALRM); | |
1591 | if (one_shot) | |
1592 | break; | |
1593 | } | |
1594 | return 0; | |
1595 | } | |
1596 | ||
1597 | static int start_timer_thread(void) | |
1598 | { | |
1599 | timer_event = CreateEvent(NULL, FALSE, FALSE, NULL); | |
1600 | if (timer_event) { | |
1601 | timer_thread = (HANDLE) _beginthreadex(NULL, 0, ticktack, NULL, 0, NULL); | |
1602 | if (!timer_thread ) | |
1603 | return errno = ENOMEM, | |
1604 | error("cannot start timer thread"); | |
1605 | } else | |
1606 | return errno = ENOMEM, | |
1607 | error("cannot allocate resources for timer"); | |
1608 | return 0; | |
1609 | } | |
1610 | ||
1611 | static void stop_timer_thread(void) | |
1612 | { | |
1613 | if (timer_event) | |
1614 | SetEvent(timer_event); /* tell thread to terminate */ | |
1615 | if (timer_thread) { | |
1616 | int rc = WaitForSingleObject(timer_thread, 1000); | |
1617 | if (rc == WAIT_TIMEOUT) | |
1618 | error("timer thread did not terminate timely"); | |
1619 | else if (rc != WAIT_OBJECT_0) | |
1620 | error("waiting for timer thread failed: %lu", | |
1621 | GetLastError()); | |
1622 | CloseHandle(timer_thread); | |
1623 | } | |
1624 | if (timer_event) | |
1625 | CloseHandle(timer_event); | |
1626 | timer_event = NULL; | |
1627 | timer_thread = NULL; | |
1628 | } | |
1629 | ||
1630 | static inline int is_timeval_eq(const struct timeval *i1, const struct timeval *i2) | |
1631 | { | |
1632 | return i1->tv_sec == i2->tv_sec && i1->tv_usec == i2->tv_usec; | |
1633 | } | |
1634 | ||
1635 | int setitimer(int type, struct itimerval *in, struct itimerval *out) | |
1636 | { | |
1637 | static const struct timeval zero; | |
1638 | static int atexit_done; | |
1639 | ||
1640 | if (out != NULL) | |
1641 | return errno = EINVAL, | |
1642 | error("setitimer param 3 != NULL not implemented"); | |
1643 | if (!is_timeval_eq(&in->it_interval, &zero) && | |
1644 | !is_timeval_eq(&in->it_interval, &in->it_value)) | |
1645 | return errno = EINVAL, | |
1646 | error("setitimer: it_interval must be zero or eq it_value"); | |
1647 | ||
1648 | if (timer_thread) | |
1649 | stop_timer_thread(); | |
1650 | ||
1651 | if (is_timeval_eq(&in->it_value, &zero) && | |
1652 | is_timeval_eq(&in->it_interval, &zero)) | |
1653 | return 0; | |
1654 | ||
1655 | timer_interval = in->it_value.tv_sec * 1000 + in->it_value.tv_usec / 1000; | |
1656 | one_shot = is_timeval_eq(&in->it_interval, &zero); | |
1657 | if (!atexit_done) { | |
1658 | atexit(stop_timer_thread); | |
1659 | atexit_done = 1; | |
1660 | } | |
1661 | return start_timer_thread(); | |
1662 | } | |
1663 | ||
1664 | int sigaction(int sig, struct sigaction *in, struct sigaction *out) | |
1665 | { | |
1666 | if (sig != SIGALRM) | |
1667 | return errno = EINVAL, | |
1668 | error("sigaction only implemented for SIGALRM"); | |
1669 | if (out != NULL) | |
1670 | return errno = EINVAL, | |
1671 | error("sigaction: param 3 != NULL not implemented"); | |
1672 | ||
1673 | timer_fn = in->sa_handler; | |
1674 | return 0; | |
1675 | } | |
1676 | ||
1677 | #undef signal | |
1678 | sig_handler_t mingw_signal(int sig, sig_handler_t handler) | |
1679 | { | |
1680 | sig_handler_t old = timer_fn; | |
1681 | ||
1682 | switch (sig) { | |
1683 | case SIGALRM: | |
1684 | timer_fn = handler; | |
1685 | break; | |
1686 | ||
1687 | case SIGINT: | |
1688 | sigint_fn = handler; | |
1689 | break; | |
1690 | ||
1691 | default: | |
1692 | return signal(sig, handler); | |
1693 | } | |
1694 | ||
1695 | return old; | |
1696 | } | |
1697 | ||
1698 | #undef raise | |
1699 | int mingw_raise(int sig) | |
1700 | { | |
1701 | switch (sig) { | |
1702 | case SIGALRM: | |
1703 | if (timer_fn == SIG_DFL) { | |
1704 | if (isatty(STDERR_FILENO)) | |
1705 | fputs("Alarm clock\n", stderr); | |
1706 | exit(128 + SIGALRM); | |
1707 | } else if (timer_fn != SIG_IGN) | |
1708 | timer_fn(SIGALRM); | |
1709 | return 0; | |
1710 | ||
1711 | case SIGINT: | |
1712 | if (sigint_fn == SIG_DFL) | |
1713 | exit(128 + SIGINT); | |
1714 | else if (sigint_fn != SIG_IGN) | |
1715 | sigint_fn(SIGINT); | |
1716 | return 0; | |
1717 | ||
1718 | default: | |
1719 | return raise(sig); | |
1720 | } | |
1721 | } | |
1722 | ||
1723 | ||
1724 | static const char *make_backslash_path(const char *path) | |
1725 | { | |
1726 | static char buf[PATH_MAX + 1]; | |
1727 | char *c; | |
1728 | ||
1729 | if (strlcpy(buf, path, PATH_MAX) >= PATH_MAX) | |
1730 | die("Too long path: %.*s", 60, path); | |
1731 | ||
1732 | for (c = buf; *c; c++) { | |
1733 | if (*c == '/') | |
1734 | *c = '\\'; | |
1735 | } | |
1736 | return buf; | |
1737 | } | |
1738 | ||
1739 | void mingw_open_html(const char *unixpath) | |
1740 | { | |
1741 | const char *htmlpath = make_backslash_path(unixpath); | |
1742 | typedef HINSTANCE (WINAPI *T)(HWND, const char *, | |
1743 | const char *, const char *, const char *, INT); | |
1744 | T ShellExecute; | |
1745 | HMODULE shell32; | |
1746 | int r; | |
1747 | ||
1748 | shell32 = LoadLibrary("shell32.dll"); | |
1749 | if (!shell32) | |
1750 | die("cannot load shell32.dll"); | |
1751 | ShellExecute = (T)GetProcAddress(shell32, "ShellExecuteA"); | |
1752 | if (!ShellExecute) | |
1753 | die("cannot run browser"); | |
1754 | ||
1755 | printf("Launching default browser to display HTML ...\n"); | |
1756 | r = (int)ShellExecute(NULL, "open", htmlpath, NULL, "\\", SW_SHOWNORMAL); | |
1757 | FreeLibrary(shell32); | |
1758 | /* see the MSDN documentation referring to the result codes here */ | |
1759 | if (r <= 32) { | |
1760 | die("failed to launch browser for %.*s", MAX_PATH, unixpath); | |
1761 | } | |
1762 | } | |
1763 | ||
1764 | int link(const char *oldpath, const char *newpath) | |
1765 | { | |
1766 | typedef BOOL (WINAPI *T)(const char*, const char*, LPSECURITY_ATTRIBUTES); | |
1767 | static T create_hard_link = NULL; | |
1768 | if (!create_hard_link) { | |
1769 | create_hard_link = (T) GetProcAddress( | |
1770 | GetModuleHandle("kernel32.dll"), "CreateHardLinkA"); | |
1771 | if (!create_hard_link) | |
1772 | create_hard_link = (T)-1; | |
1773 | } | |
1774 | if (create_hard_link == (T)-1) { | |
1775 | errno = ENOSYS; | |
1776 | return -1; | |
1777 | } | |
1778 | if (!create_hard_link(newpath, oldpath, NULL)) { | |
1779 | errno = err_win_to_posix(GetLastError()); | |
1780 | return -1; | |
1781 | } | |
1782 | return 0; | |
1783 | } | |
1784 | ||
1785 | pid_t waitpid(pid_t pid, int *status, int options) | |
1786 | { | |
1787 | HANDLE h = OpenProcess(SYNCHRONIZE | PROCESS_QUERY_INFORMATION, | |
1788 | FALSE, pid); | |
1789 | if (!h) { | |
1790 | errno = ECHILD; | |
1791 | return -1; | |
1792 | } | |
1793 | ||
1794 | if (pid > 0 && options & WNOHANG) { | |
1795 | if (WAIT_OBJECT_0 != WaitForSingleObject(h, 0)) { | |
1796 | CloseHandle(h); | |
1797 | return 0; | |
1798 | } | |
1799 | options &= ~WNOHANG; | |
1800 | } | |
1801 | ||
1802 | if (options == 0) { | |
1803 | struct pinfo_t **ppinfo; | |
1804 | if (WaitForSingleObject(h, INFINITE) != WAIT_OBJECT_0) { | |
1805 | CloseHandle(h); | |
1806 | return 0; | |
1807 | } | |
1808 | ||
1809 | if (status) | |
1810 | GetExitCodeProcess(h, (LPDWORD)status); | |
1811 | ||
1812 | EnterCriticalSection(&pinfo_cs); | |
1813 | ||
1814 | ppinfo = &pinfo; | |
1815 | while (*ppinfo) { | |
1816 | struct pinfo_t *info = *ppinfo; | |
1817 | if (info->pid == pid) { | |
1818 | CloseHandle(info->proc); | |
1819 | *ppinfo = info->next; | |
1820 | free(info); | |
1821 | break; | |
1822 | } | |
1823 | ppinfo = &info->next; | |
1824 | } | |
1825 | ||
1826 | LeaveCriticalSection(&pinfo_cs); | |
1827 | ||
1828 | CloseHandle(h); | |
1829 | return pid; | |
1830 | } | |
1831 | CloseHandle(h); | |
1832 | ||
1833 | errno = EINVAL; | |
1834 | return -1; | |
1835 | } |