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Commit | Line | Data |
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f4626df5 | 1 | #include "../git-compat-util.h" |
444dc903 | 2 | #include "win32.h" |
28a559c0 | 3 | #include <conio.h> |
7e5d7768 | 4 | #include "../strbuf.h" |
f4626df5 | 5 | |
44626dc7 | 6 | int err_win_to_posix(DWORD winerr) |
b3debd2b PK |
7 | { |
8 | int error = ENOSYS; | |
9 | switch(winerr) { | |
10 | case ERROR_ACCESS_DENIED: error = EACCES; break; | |
11 | case ERROR_ACCOUNT_DISABLED: error = EACCES; break; | |
12 | case ERROR_ACCOUNT_RESTRICTION: error = EACCES; break; | |
13 | case ERROR_ALREADY_ASSIGNED: error = EBUSY; break; | |
14 | case ERROR_ALREADY_EXISTS: error = EEXIST; break; | |
15 | case ERROR_ARITHMETIC_OVERFLOW: error = ERANGE; break; | |
16 | case ERROR_BAD_COMMAND: error = EIO; break; | |
17 | case ERROR_BAD_DEVICE: error = ENODEV; break; | |
18 | case ERROR_BAD_DRIVER_LEVEL: error = ENXIO; break; | |
19 | case ERROR_BAD_EXE_FORMAT: error = ENOEXEC; break; | |
20 | case ERROR_BAD_FORMAT: error = ENOEXEC; break; | |
21 | case ERROR_BAD_LENGTH: error = EINVAL; break; | |
22 | case ERROR_BAD_PATHNAME: error = ENOENT; break; | |
23 | case ERROR_BAD_PIPE: error = EPIPE; break; | |
24 | case ERROR_BAD_UNIT: error = ENODEV; break; | |
25 | case ERROR_BAD_USERNAME: error = EINVAL; break; | |
26 | case ERROR_BROKEN_PIPE: error = EPIPE; break; | |
27 | case ERROR_BUFFER_OVERFLOW: error = ENAMETOOLONG; break; | |
28 | case ERROR_BUSY: error = EBUSY; break; | |
29 | case ERROR_BUSY_DRIVE: error = EBUSY; break; | |
30 | case ERROR_CALL_NOT_IMPLEMENTED: error = ENOSYS; break; | |
31 | case ERROR_CANNOT_MAKE: error = EACCES; break; | |
32 | case ERROR_CANTOPEN: error = EIO; break; | |
33 | case ERROR_CANTREAD: error = EIO; break; | |
34 | case ERROR_CANTWRITE: error = EIO; break; | |
35 | case ERROR_CRC: error = EIO; break; | |
36 | case ERROR_CURRENT_DIRECTORY: error = EACCES; break; | |
37 | case ERROR_DEVICE_IN_USE: error = EBUSY; break; | |
38 | case ERROR_DEV_NOT_EXIST: error = ENODEV; break; | |
39 | case ERROR_DIRECTORY: error = EINVAL; break; | |
40 | case ERROR_DIR_NOT_EMPTY: error = ENOTEMPTY; break; | |
41 | case ERROR_DISK_CHANGE: error = EIO; break; | |
42 | case ERROR_DISK_FULL: error = ENOSPC; break; | |
43 | case ERROR_DRIVE_LOCKED: error = EBUSY; break; | |
44 | case ERROR_ENVVAR_NOT_FOUND: error = EINVAL; break; | |
45 | case ERROR_EXE_MARKED_INVALID: error = ENOEXEC; break; | |
46 | case ERROR_FILENAME_EXCED_RANGE: error = ENAMETOOLONG; break; | |
47 | case ERROR_FILE_EXISTS: error = EEXIST; break; | |
48 | case ERROR_FILE_INVALID: error = ENODEV; break; | |
49 | case ERROR_FILE_NOT_FOUND: error = ENOENT; break; | |
50 | case ERROR_GEN_FAILURE: error = EIO; break; | |
51 | case ERROR_HANDLE_DISK_FULL: error = ENOSPC; break; | |
52 | case ERROR_INSUFFICIENT_BUFFER: error = ENOMEM; break; | |
53 | case ERROR_INVALID_ACCESS: error = EACCES; break; | |
54 | case ERROR_INVALID_ADDRESS: error = EFAULT; break; | |
55 | case ERROR_INVALID_BLOCK: error = EFAULT; break; | |
56 | case ERROR_INVALID_DATA: error = EINVAL; break; | |
57 | case ERROR_INVALID_DRIVE: error = ENODEV; break; | |
58 | case ERROR_INVALID_EXE_SIGNATURE: error = ENOEXEC; break; | |
59 | case ERROR_INVALID_FLAGS: error = EINVAL; break; | |
60 | case ERROR_INVALID_FUNCTION: error = ENOSYS; break; | |
61 | case ERROR_INVALID_HANDLE: error = EBADF; break; | |
62 | case ERROR_INVALID_LOGON_HOURS: error = EACCES; break; | |
63 | case ERROR_INVALID_NAME: error = EINVAL; break; | |
64 | case ERROR_INVALID_OWNER: error = EINVAL; break; | |
65 | case ERROR_INVALID_PARAMETER: error = EINVAL; break; | |
66 | case ERROR_INVALID_PASSWORD: error = EPERM; break; | |
67 | case ERROR_INVALID_PRIMARY_GROUP: error = EINVAL; break; | |
68 | case ERROR_INVALID_SIGNAL_NUMBER: error = EINVAL; break; | |
69 | case ERROR_INVALID_TARGET_HANDLE: error = EIO; break; | |
70 | case ERROR_INVALID_WORKSTATION: error = EACCES; break; | |
71 | case ERROR_IO_DEVICE: error = EIO; break; | |
72 | case ERROR_IO_INCOMPLETE: error = EINTR; break; | |
73 | case ERROR_LOCKED: error = EBUSY; break; | |
74 | case ERROR_LOCK_VIOLATION: error = EACCES; break; | |
75 | case ERROR_LOGON_FAILURE: error = EACCES; break; | |
76 | case ERROR_MAPPED_ALIGNMENT: error = EINVAL; break; | |
77 | case ERROR_META_EXPANSION_TOO_LONG: error = E2BIG; break; | |
78 | case ERROR_MORE_DATA: error = EPIPE; break; | |
79 | case ERROR_NEGATIVE_SEEK: error = ESPIPE; break; | |
80 | case ERROR_NOACCESS: error = EFAULT; break; | |
81 | case ERROR_NONE_MAPPED: error = EINVAL; break; | |
82 | case ERROR_NOT_ENOUGH_MEMORY: error = ENOMEM; break; | |
83 | case ERROR_NOT_READY: error = EAGAIN; break; | |
84 | case ERROR_NOT_SAME_DEVICE: error = EXDEV; break; | |
85 | case ERROR_NO_DATA: error = EPIPE; break; | |
86 | case ERROR_NO_MORE_SEARCH_HANDLES: error = EIO; break; | |
87 | case ERROR_NO_PROC_SLOTS: error = EAGAIN; break; | |
88 | case ERROR_NO_SUCH_PRIVILEGE: error = EACCES; break; | |
89 | case ERROR_OPEN_FAILED: error = EIO; break; | |
90 | case ERROR_OPEN_FILES: error = EBUSY; break; | |
91 | case ERROR_OPERATION_ABORTED: error = EINTR; break; | |
92 | case ERROR_OUTOFMEMORY: error = ENOMEM; break; | |
93 | case ERROR_PASSWORD_EXPIRED: error = EACCES; break; | |
94 | case ERROR_PATH_BUSY: error = EBUSY; break; | |
95 | case ERROR_PATH_NOT_FOUND: error = ENOENT; break; | |
96 | case ERROR_PIPE_BUSY: error = EBUSY; break; | |
97 | case ERROR_PIPE_CONNECTED: error = EPIPE; break; | |
98 | case ERROR_PIPE_LISTENING: error = EPIPE; break; | |
99 | case ERROR_PIPE_NOT_CONNECTED: error = EPIPE; break; | |
100 | case ERROR_PRIVILEGE_NOT_HELD: error = EACCES; break; | |
101 | case ERROR_READ_FAULT: error = EIO; break; | |
102 | case ERROR_SEEK: error = EIO; break; | |
103 | case ERROR_SEEK_ON_DEVICE: error = ESPIPE; break; | |
104 | case ERROR_SHARING_BUFFER_EXCEEDED: error = ENFILE; break; | |
105 | case ERROR_SHARING_VIOLATION: error = EACCES; break; | |
106 | case ERROR_STACK_OVERFLOW: error = ENOMEM; break; | |
107 | case ERROR_SWAPERROR: error = ENOENT; break; | |
108 | case ERROR_TOO_MANY_MODULES: error = EMFILE; break; | |
109 | case ERROR_TOO_MANY_OPEN_FILES: error = EMFILE; break; | |
110 | case ERROR_UNRECOGNIZED_MEDIA: error = ENXIO; break; | |
111 | case ERROR_UNRECOGNIZED_VOLUME: error = ENODEV; break; | |
112 | case ERROR_WAIT_NO_CHILDREN: error = ECHILD; break; | |
113 | case ERROR_WRITE_FAULT: error = EIO; break; | |
114 | case ERROR_WRITE_PROTECT: error = EROFS; break; | |
115 | } | |
116 | return error; | |
117 | } | |
118 | ||
3e4a1ba0 JS |
119 | #undef open |
120 | int mingw_open (const char *filename, int oflags, ...) | |
121 | { | |
122 | va_list args; | |
123 | unsigned mode; | |
0d30ad71 FL |
124 | int fd; |
125 | ||
3e4a1ba0 JS |
126 | va_start(args, oflags); |
127 | mode = va_arg(args, int); | |
128 | va_end(args); | |
129 | ||
130 | if (!strcmp(filename, "/dev/null")) | |
131 | filename = "nul"; | |
0d30ad71 FL |
132 | |
133 | fd = open(filename, oflags, mode); | |
134 | ||
3e4a1ba0 JS |
135 | if (fd < 0 && (oflags & O_CREAT) && errno == EACCES) { |
136 | DWORD attrs = GetFileAttributes(filename); | |
137 | if (attrs != INVALID_FILE_ATTRIBUTES && (attrs & FILE_ATTRIBUTE_DIRECTORY)) | |
138 | errno = EISDIR; | |
139 | } | |
140 | return fd; | |
141 | } | |
142 | ||
a6d15bc3 JS |
143 | /* |
144 | * The unit of FILETIME is 100-nanoseconds since January 1, 1601, UTC. | |
145 | * Returns the 100-nanoseconds ("hekto nanoseconds") since the epoch. | |
146 | */ | |
147 | static inline long long filetime_to_hnsec(const FILETIME *ft) | |
5411bdc4 MSO |
148 | { |
149 | long long winTime = ((long long)ft->dwHighDateTime << 32) + ft->dwLowDateTime; | |
a6d15bc3 JS |
150 | /* Windows to Unix Epoch conversion */ |
151 | return winTime - 116444736000000000LL; | |
152 | } | |
153 | ||
154 | static inline time_t filetime_to_time_t(const FILETIME *ft) | |
155 | { | |
156 | return (time_t)(filetime_to_hnsec(ft) / 10000000); | |
5411bdc4 MSO |
157 | } |
158 | ||
5411bdc4 MSO |
159 | /* We keep the do_lstat code in a separate function to avoid recursion. |
160 | * When a path ends with a slash, the stat will fail with ENOENT. In | |
161 | * this case, we strip the trailing slashes and stat again. | |
162 | */ | |
163 | static int do_lstat(const char *file_name, struct stat *buf) | |
164 | { | |
165 | WIN32_FILE_ATTRIBUTE_DATA fdata; | |
166 | ||
444dc903 | 167 | if (!(errno = get_file_attr(file_name, &fdata))) { |
5411bdc4 MSO |
168 | buf->st_ino = 0; |
169 | buf->st_gid = 0; | |
170 | buf->st_uid = 0; | |
180964f0 | 171 | buf->st_nlink = 1; |
444dc903 | 172 | buf->st_mode = file_attr_to_st_mode(fdata.dwFileAttributes); |
1d4e4cd4 JS |
173 | buf->st_size = fdata.nFileSizeLow | |
174 | (((off_t)fdata.nFileSizeHigh)<<32); | |
8252df62 | 175 | buf->st_dev = buf->st_rdev = 0; /* not used by Git */ |
5411bdc4 MSO |
176 | buf->st_atime = filetime_to_time_t(&(fdata.ftLastAccessTime)); |
177 | buf->st_mtime = filetime_to_time_t(&(fdata.ftLastWriteTime)); | |
178 | buf->st_ctime = filetime_to_time_t(&(fdata.ftCreationTime)); | |
5411bdc4 MSO |
179 | return 0; |
180 | } | |
5411bdc4 MSO |
181 | return -1; |
182 | } | |
183 | ||
184 | /* We provide our own lstat/fstat functions, since the provided | |
185 | * lstat/fstat functions are so slow. These stat functions are | |
186 | * tailored for Git's usage (read: fast), and are not meant to be | |
187 | * complete. Note that Git stat()s are redirected to mingw_lstat() | |
188 | * too, since Windows doesn't really handle symlinks that well. | |
189 | */ | |
180964f0 | 190 | int mingw_lstat(const char *file_name, struct stat *buf) |
5411bdc4 MSO |
191 | { |
192 | int namelen; | |
193 | static char alt_name[PATH_MAX]; | |
194 | ||
195 | if (!do_lstat(file_name, buf)) | |
196 | return 0; | |
197 | ||
198 | /* if file_name ended in a '/', Windows returned ENOENT; | |
199 | * try again without trailing slashes | |
200 | */ | |
201 | if (errno != ENOENT) | |
202 | return -1; | |
203 | ||
204 | namelen = strlen(file_name); | |
205 | if (namelen && file_name[namelen-1] != '/') | |
206 | return -1; | |
207 | while (namelen && file_name[namelen-1] == '/') | |
208 | --namelen; | |
209 | if (!namelen || namelen >= PATH_MAX) | |
210 | return -1; | |
211 | ||
212 | memcpy(alt_name, file_name, namelen); | |
213 | alt_name[namelen] = 0; | |
214 | return do_lstat(alt_name, buf); | |
215 | } | |
216 | ||
217 | #undef fstat | |
180964f0 | 218 | int mingw_fstat(int fd, struct stat *buf) |
5411bdc4 MSO |
219 | { |
220 | HANDLE fh = (HANDLE)_get_osfhandle(fd); | |
221 | BY_HANDLE_FILE_INFORMATION fdata; | |
222 | ||
223 | if (fh == INVALID_HANDLE_VALUE) { | |
224 | errno = EBADF; | |
225 | return -1; | |
226 | } | |
227 | /* direct non-file handles to MS's fstat() */ | |
180964f0 | 228 | if (GetFileType(fh) != FILE_TYPE_DISK) |
1d4e4cd4 | 229 | return _fstati64(fd, buf); |
5411bdc4 MSO |
230 | |
231 | if (GetFileInformationByHandle(fh, &fdata)) { | |
5411bdc4 MSO |
232 | buf->st_ino = 0; |
233 | buf->st_gid = 0; | |
234 | buf->st_uid = 0; | |
180964f0 | 235 | buf->st_nlink = 1; |
444dc903 | 236 | buf->st_mode = file_attr_to_st_mode(fdata.dwFileAttributes); |
1d4e4cd4 JS |
237 | buf->st_size = fdata.nFileSizeLow | |
238 | (((off_t)fdata.nFileSizeHigh)<<32); | |
8252df62 | 239 | buf->st_dev = buf->st_rdev = 0; /* not used by Git */ |
5411bdc4 MSO |
240 | buf->st_atime = filetime_to_time_t(&(fdata.ftLastAccessTime)); |
241 | buf->st_mtime = filetime_to_time_t(&(fdata.ftLastWriteTime)); | |
242 | buf->st_ctime = filetime_to_time_t(&(fdata.ftCreationTime)); | |
243 | return 0; | |
244 | } | |
245 | errno = EBADF; | |
246 | return -1; | |
247 | } | |
248 | ||
7c0ffa1c JS |
249 | static inline void time_t_to_filetime(time_t t, FILETIME *ft) |
250 | { | |
251 | long long winTime = t * 10000000LL + 116444736000000000LL; | |
252 | ft->dwLowDateTime = winTime; | |
253 | ft->dwHighDateTime = winTime >> 32; | |
254 | } | |
255 | ||
256 | int mingw_utime (const char *file_name, const struct utimbuf *times) | |
257 | { | |
258 | FILETIME mft, aft; | |
259 | int fh, rc; | |
260 | ||
261 | /* must have write permission */ | |
262 | if ((fh = open(file_name, O_RDWR | O_BINARY)) < 0) | |
263 | return -1; | |
264 | ||
265 | time_t_to_filetime(times->modtime, &mft); | |
266 | time_t_to_filetime(times->actime, &aft); | |
267 | if (!SetFileTime((HANDLE)_get_osfhandle(fh), NULL, &aft, &mft)) { | |
268 | errno = EINVAL; | |
269 | rc = -1; | |
270 | } else | |
271 | rc = 0; | |
272 | close(fh); | |
273 | return rc; | |
274 | } | |
275 | ||
f4626df5 JS |
276 | unsigned int sleep (unsigned int seconds) |
277 | { | |
278 | Sleep(seconds*1000); | |
279 | return 0; | |
280 | } | |
281 | ||
282 | int mkstemp(char *template) | |
283 | { | |
284 | char *filename = mktemp(template); | |
285 | if (filename == NULL) | |
286 | return -1; | |
287 | return open(filename, O_RDWR | O_CREAT, 0600); | |
288 | } | |
289 | ||
290 | int gettimeofday(struct timeval *tv, void *tz) | |
291 | { | |
a6d15bc3 JS |
292 | FILETIME ft; |
293 | long long hnsec; | |
294 | ||
295 | GetSystemTimeAsFileTime(&ft); | |
296 | hnsec = filetime_to_hnsec(&ft); | |
297 | tv->tv_sec = hnsec / 10000000; | |
298 | tv->tv_usec = (hnsec % 10000000) / 10; | |
a42a0c2e | 299 | return 0; |
f4626df5 JS |
300 | } |
301 | ||
897bb8cb JS |
302 | int pipe(int filedes[2]) |
303 | { | |
3e34d665 | 304 | HANDLE h[2]; |
897bb8cb | 305 | |
3e34d665 JS |
306 | /* this creates non-inheritable handles */ |
307 | if (!CreatePipe(&h[0], &h[1], NULL, 8192)) { | |
308 | errno = err_win_to_posix(GetLastError()); | |
897bb8cb JS |
309 | return -1; |
310 | } | |
3e34d665 JS |
311 | filedes[0] = _open_osfhandle((int)h[0], O_NOINHERIT); |
312 | if (filedes[0] < 0) { | |
897bb8cb JS |
313 | CloseHandle(h[0]); |
314 | CloseHandle(h[1]); | |
315 | return -1; | |
316 | } | |
3e34d665 JS |
317 | filedes[1] = _open_osfhandle((int)h[1], O_NOINHERIT); |
318 | if (filedes[0] < 0) { | |
897bb8cb | 319 | close(filedes[0]); |
897bb8cb JS |
320 | CloseHandle(h[1]); |
321 | return -1; | |
322 | } | |
897bb8cb JS |
323 | return 0; |
324 | } | |
325 | ||
f4626df5 JS |
326 | int poll(struct pollfd *ufds, unsigned int nfds, int timeout) |
327 | { | |
6ed807f8 JS |
328 | int i, pending; |
329 | ||
d317851a JS |
330 | if (timeout >= 0) { |
331 | if (nfds == 0) { | |
332 | Sleep(timeout); | |
333 | return 0; | |
334 | } | |
6ed807f8 | 335 | return errno = EINVAL, error("poll timeout not supported"); |
d317851a | 336 | } |
6ed807f8 JS |
337 | |
338 | /* When there is only one fd to wait for, then we pretend that | |
339 | * input is available and let the actual wait happen when the | |
340 | * caller invokes read(). | |
341 | */ | |
342 | if (nfds == 1) { | |
343 | if (!(ufds[0].events & POLLIN)) | |
344 | return errno = EINVAL, error("POLLIN not set"); | |
345 | ufds[0].revents = POLLIN; | |
346 | return 0; | |
347 | } | |
348 | ||
349 | repeat: | |
350 | pending = 0; | |
351 | for (i = 0; i < nfds; i++) { | |
352 | DWORD avail = 0; | |
353 | HANDLE h = (HANDLE) _get_osfhandle(ufds[i].fd); | |
354 | if (h == INVALID_HANDLE_VALUE) | |
355 | return -1; /* errno was set */ | |
356 | ||
357 | if (!(ufds[i].events & POLLIN)) | |
358 | return errno = EINVAL, error("POLLIN not set"); | |
359 | ||
360 | /* this emulation works only for pipes */ | |
361 | if (!PeekNamedPipe(h, NULL, 0, NULL, &avail, NULL)) { | |
362 | int err = GetLastError(); | |
363 | if (err == ERROR_BROKEN_PIPE) { | |
364 | ufds[i].revents = POLLHUP; | |
365 | pending++; | |
366 | } else { | |
367 | errno = EINVAL; | |
368 | return error("PeekNamedPipe failed," | |
369 | " GetLastError: %u", err); | |
370 | } | |
371 | } else if (avail) { | |
372 | ufds[i].revents = POLLIN; | |
373 | pending++; | |
374 | } else | |
375 | ufds[i].revents = 0; | |
376 | } | |
377 | if (!pending) { | |
378 | /* The only times that we spin here is when the process | |
379 | * that is connected through the pipes is waiting for | |
380 | * its own input data to become available. But since | |
381 | * the process (pack-objects) is itself CPU intensive, | |
382 | * it will happily pick up the time slice that we are | |
3ea3c215 | 383 | * relinquishing here. |
6ed807f8 JS |
384 | */ |
385 | Sleep(0); | |
386 | goto repeat; | |
387 | } | |
388 | return 0; | |
f4626df5 JS |
389 | } |
390 | ||
391 | struct tm *gmtime_r(const time_t *timep, struct tm *result) | |
392 | { | |
393 | /* gmtime() in MSVCRT.DLL is thread-safe, but not reentrant */ | |
394 | memcpy(result, gmtime(timep), sizeof(struct tm)); | |
395 | return result; | |
396 | } | |
397 | ||
398 | struct tm *localtime_r(const time_t *timep, struct tm *result) | |
399 | { | |
400 | /* localtime() in MSVCRT.DLL is thread-safe, but not reentrant */ | |
401 | memcpy(result, localtime(timep), sizeof(struct tm)); | |
402 | return result; | |
403 | } | |
404 | ||
25fe217b JS |
405 | #undef getcwd |
406 | char *mingw_getcwd(char *pointer, int len) | |
407 | { | |
408 | int i; | |
409 | char *ret = getcwd(pointer, len); | |
410 | if (!ret) | |
411 | return ret; | |
412 | for (i = 0; pointer[i]; i++) | |
413 | if (pointer[i] == '\\') | |
414 | pointer[i] = '/'; | |
415 | return ret; | |
416 | } | |
417 | ||
6fd6aec4 JS |
418 | #undef getenv |
419 | char *mingw_getenv(const char *name) | |
420 | { | |
421 | char *result = getenv(name); | |
422 | if (!result && !strcmp(name, "TMPDIR")) { | |
423 | /* on Windows it is TMP and TEMP */ | |
424 | result = getenv("TMP"); | |
425 | if (!result) | |
426 | result = getenv("TEMP"); | |
427 | } | |
428 | return result; | |
429 | } | |
430 | ||
7e5d7768 JS |
431 | /* |
432 | * See http://msdn2.microsoft.com/en-us/library/17w5ykft(vs.71).aspx | |
433 | * (Parsing C++ Command-Line Arguments) | |
434 | */ | |
435 | static const char *quote_arg(const char *arg) | |
436 | { | |
437 | /* count chars to quote */ | |
438 | int len = 0, n = 0; | |
439 | int force_quotes = 0; | |
440 | char *q, *d; | |
441 | const char *p = arg; | |
442 | if (!*p) force_quotes = 1; | |
443 | while (*p) { | |
3aea1a5a | 444 | if (isspace(*p) || *p == '*' || *p == '?' || *p == '{' || *p == '\'') |
7e5d7768 JS |
445 | force_quotes = 1; |
446 | else if (*p == '"') | |
447 | n++; | |
448 | else if (*p == '\\') { | |
449 | int count = 0; | |
450 | while (*p == '\\') { | |
451 | count++; | |
452 | p++; | |
453 | len++; | |
454 | } | |
455 | if (*p == '"') | |
456 | n += count*2 + 1; | |
457 | continue; | |
458 | } | |
459 | len++; | |
460 | p++; | |
461 | } | |
462 | if (!force_quotes && n == 0) | |
463 | return arg; | |
464 | ||
465 | /* insert \ where necessary */ | |
466 | d = q = xmalloc(len+n+3); | |
467 | *d++ = '"'; | |
468 | while (*arg) { | |
469 | if (*arg == '"') | |
470 | *d++ = '\\'; | |
471 | else if (*arg == '\\') { | |
472 | int count = 0; | |
473 | while (*arg == '\\') { | |
474 | count++; | |
475 | *d++ = *arg++; | |
476 | } | |
477 | if (*arg == '"') { | |
478 | while (count-- > 0) | |
479 | *d++ = '\\'; | |
480 | *d++ = '\\'; | |
481 | } | |
482 | } | |
483 | *d++ = *arg++; | |
484 | } | |
485 | *d++ = '"'; | |
486 | *d++ = 0; | |
487 | return q; | |
488 | } | |
489 | ||
f1a4dfb8 JS |
490 | static const char *parse_interpreter(const char *cmd) |
491 | { | |
492 | static char buf[100]; | |
493 | char *p, *opt; | |
494 | int n, fd; | |
495 | ||
496 | /* don't even try a .exe */ | |
497 | n = strlen(cmd); | |
498 | if (n >= 4 && !strcasecmp(cmd+n-4, ".exe")) | |
499 | return NULL; | |
500 | ||
501 | fd = open(cmd, O_RDONLY); | |
502 | if (fd < 0) | |
503 | return NULL; | |
504 | n = read(fd, buf, sizeof(buf)-1); | |
505 | close(fd); | |
506 | if (n < 4) /* at least '#!/x' and not error */ | |
507 | return NULL; | |
508 | ||
509 | if (buf[0] != '#' || buf[1] != '!') | |
510 | return NULL; | |
511 | buf[n] = '\0'; | |
bedc4279 PH |
512 | p = buf + strcspn(buf, "\r\n"); |
513 | if (!*p) | |
f1a4dfb8 JS |
514 | return NULL; |
515 | ||
516 | *p = '\0'; | |
517 | if (!(p = strrchr(buf+2, '/')) && !(p = strrchr(buf+2, '\\'))) | |
518 | return NULL; | |
519 | /* strip options */ | |
520 | if ((opt = strchr(p+1, ' '))) | |
521 | *opt = '\0'; | |
522 | return p+1; | |
523 | } | |
524 | ||
525 | /* | |
526 | * Splits the PATH into parts. | |
527 | */ | |
528 | static char **get_path_split(void) | |
529 | { | |
530 | char *p, **path, *envpath = getenv("PATH"); | |
531 | int i, n = 0; | |
532 | ||
533 | if (!envpath || !*envpath) | |
534 | return NULL; | |
535 | ||
536 | envpath = xstrdup(envpath); | |
537 | p = envpath; | |
538 | while (p) { | |
539 | char *dir = p; | |
540 | p = strchr(p, ';'); | |
541 | if (p) *p++ = '\0'; | |
542 | if (*dir) { /* not earlier, catches series of ; */ | |
543 | ++n; | |
544 | } | |
545 | } | |
546 | if (!n) | |
547 | return NULL; | |
548 | ||
4b25d091 | 549 | path = xmalloc((n+1)*sizeof(char *)); |
f1a4dfb8 JS |
550 | p = envpath; |
551 | i = 0; | |
552 | do { | |
553 | if (*p) | |
554 | path[i++] = xstrdup(p); | |
555 | p = p+strlen(p)+1; | |
556 | } while (i < n); | |
557 | path[i] = NULL; | |
558 | ||
559 | free(envpath); | |
560 | ||
561 | return path; | |
562 | } | |
563 | ||
564 | static void free_path_split(char **path) | |
565 | { | |
0d30ad71 FL |
566 | char **p = path; |
567 | ||
f1a4dfb8 JS |
568 | if (!path) |
569 | return; | |
570 | ||
f1a4dfb8 JS |
571 | while (*p) |
572 | free(*p++); | |
573 | free(path); | |
574 | } | |
575 | ||
576 | /* | |
577 | * exe_only means that we only want to detect .exe files, but not scripts | |
578 | * (which do not have an extension) | |
579 | */ | |
580 | static char *lookup_prog(const char *dir, const char *cmd, int isexe, int exe_only) | |
581 | { | |
582 | char path[MAX_PATH]; | |
583 | snprintf(path, sizeof(path), "%s/%s.exe", dir, cmd); | |
584 | ||
585 | if (!isexe && access(path, F_OK) == 0) | |
586 | return xstrdup(path); | |
587 | path[strlen(path)-4] = '\0'; | |
588 | if ((!exe_only || isexe) && access(path, F_OK) == 0) | |
fe77b695 ER |
589 | if (!(GetFileAttributes(path) & FILE_ATTRIBUTE_DIRECTORY)) |
590 | return xstrdup(path); | |
f1a4dfb8 JS |
591 | return NULL; |
592 | } | |
593 | ||
594 | /* | |
595 | * Determines the absolute path of cmd using the the split path in path. | |
596 | * If cmd contains a slash or backslash, no lookup is performed. | |
597 | */ | |
598 | static char *path_lookup(const char *cmd, char **path, int exe_only) | |
599 | { | |
600 | char *prog = NULL; | |
601 | int len = strlen(cmd); | |
602 | int isexe = len >= 4 && !strcasecmp(cmd+len-4, ".exe"); | |
603 | ||
604 | if (strchr(cmd, '/') || strchr(cmd, '\\')) | |
605 | prog = xstrdup(cmd); | |
606 | ||
607 | while (!prog && *path) | |
608 | prog = lookup_prog(*path++, cmd, isexe, exe_only); | |
609 | ||
610 | return prog; | |
611 | } | |
612 | ||
7e5d7768 JS |
613 | static int env_compare(const void *a, const void *b) |
614 | { | |
615 | char *const *ea = a; | |
616 | char *const *eb = b; | |
617 | return strcasecmp(*ea, *eb); | |
618 | } | |
619 | ||
75301f90 JS |
620 | static pid_t mingw_spawnve_fd(const char *cmd, const char **argv, char **env, |
621 | int prepend_cmd, int fhin, int fhout, int fherr) | |
7e5d7768 JS |
622 | { |
623 | STARTUPINFO si; | |
624 | PROCESS_INFORMATION pi; | |
625 | struct strbuf envblk, args; | |
626 | unsigned flags; | |
627 | BOOL ret; | |
628 | ||
629 | /* Determine whether or not we are associated to a console */ | |
630 | HANDLE cons = CreateFile("CONOUT$", GENERIC_WRITE, | |
631 | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, | |
632 | FILE_ATTRIBUTE_NORMAL, NULL); | |
633 | if (cons == INVALID_HANDLE_VALUE) { | |
634 | /* There is no console associated with this process. | |
635 | * Since the child is a console process, Windows | |
636 | * would normally create a console window. But | |
637 | * since we'll be redirecting std streams, we do | |
638 | * not need the console. | |
19fb896f AG |
639 | * It is necessary to use DETACHED_PROCESS |
640 | * instead of CREATE_NO_WINDOW to make ssh | |
641 | * recognize that it has no console. | |
7e5d7768 | 642 | */ |
19fb896f | 643 | flags = DETACHED_PROCESS; |
7e5d7768 JS |
644 | } else { |
645 | /* There is already a console. If we specified | |
19fb896f | 646 | * DETACHED_PROCESS here, too, Windows would |
7e5d7768 | 647 | * disassociate the child from the console. |
19fb896f | 648 | * The same is true for CREATE_NO_WINDOW. |
7e5d7768 JS |
649 | * Go figure! |
650 | */ | |
651 | flags = 0; | |
652 | CloseHandle(cons); | |
653 | } | |
654 | memset(&si, 0, sizeof(si)); | |
655 | si.cb = sizeof(si); | |
656 | si.dwFlags = STARTF_USESTDHANDLES; | |
75301f90 JS |
657 | si.hStdInput = (HANDLE) _get_osfhandle(fhin); |
658 | si.hStdOutput = (HANDLE) _get_osfhandle(fhout); | |
659 | si.hStdError = (HANDLE) _get_osfhandle(fherr); | |
7e5d7768 JS |
660 | |
661 | /* concatenate argv, quoting args as we go */ | |
662 | strbuf_init(&args, 0); | |
663 | if (prepend_cmd) { | |
664 | char *quoted = (char *)quote_arg(cmd); | |
665 | strbuf_addstr(&args, quoted); | |
666 | if (quoted != cmd) | |
667 | free(quoted); | |
668 | } | |
669 | for (; *argv; argv++) { | |
670 | char *quoted = (char *)quote_arg(*argv); | |
671 | if (*args.buf) | |
672 | strbuf_addch(&args, ' '); | |
673 | strbuf_addstr(&args, quoted); | |
674 | if (quoted != *argv) | |
675 | free(quoted); | |
676 | } | |
677 | ||
678 | if (env) { | |
679 | int count = 0; | |
680 | char **e, **sorted_env; | |
681 | ||
682 | for (e = env; *e; e++) | |
683 | count++; | |
684 | ||
685 | /* environment must be sorted */ | |
686 | sorted_env = xmalloc(sizeof(*sorted_env) * (count + 1)); | |
687 | memcpy(sorted_env, env, sizeof(*sorted_env) * (count + 1)); | |
688 | qsort(sorted_env, count, sizeof(*sorted_env), env_compare); | |
689 | ||
690 | strbuf_init(&envblk, 0); | |
691 | for (e = sorted_env; *e; e++) { | |
692 | strbuf_addstr(&envblk, *e); | |
693 | strbuf_addch(&envblk, '\0'); | |
694 | } | |
695 | free(sorted_env); | |
696 | } | |
697 | ||
698 | memset(&pi, 0, sizeof(pi)); | |
699 | ret = CreateProcess(cmd, args.buf, NULL, NULL, TRUE, flags, | |
700 | env ? envblk.buf : NULL, NULL, &si, &pi); | |
701 | ||
702 | if (env) | |
703 | strbuf_release(&envblk); | |
704 | strbuf_release(&args); | |
705 | ||
706 | if (!ret) { | |
707 | errno = ENOENT; | |
708 | return -1; | |
709 | } | |
710 | CloseHandle(pi.hThread); | |
711 | return (pid_t)pi.hProcess; | |
712 | } | |
713 | ||
75301f90 JS |
714 | static pid_t mingw_spawnve(const char *cmd, const char **argv, char **env, |
715 | int prepend_cmd) | |
716 | { | |
717 | return mingw_spawnve_fd(cmd, argv, env, prepend_cmd, 0, 1, 2); | |
718 | } | |
719 | ||
720 | pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **env, | |
721 | int fhin, int fhout, int fherr) | |
7e5d7768 JS |
722 | { |
723 | pid_t pid; | |
724 | char **path = get_path_split(); | |
725 | char *prog = path_lookup(cmd, path, 0); | |
726 | ||
727 | if (!prog) { | |
728 | errno = ENOENT; | |
729 | pid = -1; | |
730 | } | |
731 | else { | |
732 | const char *interpr = parse_interpreter(prog); | |
733 | ||
734 | if (interpr) { | |
735 | const char *argv0 = argv[0]; | |
736 | char *iprog = path_lookup(interpr, path, 1); | |
737 | argv[0] = prog; | |
738 | if (!iprog) { | |
739 | errno = ENOENT; | |
740 | pid = -1; | |
741 | } | |
742 | else { | |
75301f90 JS |
743 | pid = mingw_spawnve_fd(iprog, argv, env, 1, |
744 | fhin, fhout, fherr); | |
7e5d7768 JS |
745 | free(iprog); |
746 | } | |
747 | argv[0] = argv0; | |
748 | } | |
749 | else | |
75301f90 JS |
750 | pid = mingw_spawnve_fd(prog, argv, env, 0, |
751 | fhin, fhout, fherr); | |
7e5d7768 JS |
752 | free(prog); |
753 | } | |
754 | free_path_split(path); | |
755 | return pid; | |
756 | } | |
757 | ||
f1a4dfb8 JS |
758 | static int try_shell_exec(const char *cmd, char *const *argv, char **env) |
759 | { | |
760 | const char *interpr = parse_interpreter(cmd); | |
761 | char **path; | |
762 | char *prog; | |
763 | int pid = 0; | |
764 | ||
765 | if (!interpr) | |
766 | return 0; | |
767 | path = get_path_split(); | |
768 | prog = path_lookup(interpr, path, 1); | |
769 | if (prog) { | |
770 | int argc = 0; | |
771 | const char **argv2; | |
772 | while (argv[argc]) argc++; | |
7e5d7768 JS |
773 | argv2 = xmalloc(sizeof(*argv) * (argc+1)); |
774 | argv2[0] = (char *)cmd; /* full path to the script file */ | |
775 | memcpy(&argv2[1], &argv[1], sizeof(*argv) * argc); | |
776 | pid = mingw_spawnve(prog, argv2, env, 1); | |
f1a4dfb8 JS |
777 | if (pid >= 0) { |
778 | int status; | |
779 | if (waitpid(pid, &status, 0) < 0) | |
780 | status = 255; | |
781 | exit(status); | |
782 | } | |
783 | pid = 1; /* indicate that we tried but failed */ | |
784 | free(prog); | |
785 | free(argv2); | |
786 | } | |
787 | free_path_split(path); | |
788 | return pid; | |
789 | } | |
790 | ||
791 | static void mingw_execve(const char *cmd, char *const *argv, char *const *env) | |
792 | { | |
793 | /* check if git_command is a shell script */ | |
794 | if (!try_shell_exec(cmd, argv, (char **)env)) { | |
795 | int pid, status; | |
796 | ||
7e5d7768 | 797 | pid = mingw_spawnve(cmd, (const char **)argv, (char **)env, 0); |
f1a4dfb8 JS |
798 | if (pid < 0) |
799 | return; | |
800 | if (waitpid(pid, &status, 0) < 0) | |
801 | status = 255; | |
802 | exit(status); | |
803 | } | |
804 | } | |
805 | ||
806 | void mingw_execvp(const char *cmd, char *const *argv) | |
807 | { | |
808 | char **path = get_path_split(); | |
809 | char *prog = path_lookup(cmd, path, 0); | |
810 | ||
811 | if (prog) { | |
812 | mingw_execve(prog, argv, environ); | |
813 | free(prog); | |
814 | } else | |
815 | errno = ENOENT; | |
816 | ||
817 | free_path_split(path); | |
818 | } | |
819 | ||
2affea41 | 820 | static char **copy_environ(void) |
ba26f296 JS |
821 | { |
822 | char **env; | |
823 | int i = 0; | |
824 | while (environ[i]) | |
825 | i++; | |
826 | env = xmalloc((i+1)*sizeof(*env)); | |
827 | for (i = 0; environ[i]; i++) | |
828 | env[i] = xstrdup(environ[i]); | |
829 | env[i] = NULL; | |
830 | return env; | |
831 | } | |
832 | ||
833 | void free_environ(char **env) | |
834 | { | |
835 | int i; | |
836 | for (i = 0; env[i]; i++) | |
837 | free(env[i]); | |
838 | free(env); | |
839 | } | |
840 | ||
841 | static int lookup_env(char **env, const char *name, size_t nmln) | |
842 | { | |
843 | int i; | |
844 | ||
845 | for (i = 0; env[i]; i++) { | |
846 | if (0 == strncmp(env[i], name, nmln) | |
847 | && '=' == env[i][nmln]) | |
848 | /* matches */ | |
849 | return i; | |
850 | } | |
851 | return -1; | |
852 | } | |
853 | ||
854 | /* | |
855 | * If name contains '=', then sets the variable, otherwise it unsets it | |
856 | */ | |
2affea41 | 857 | static char **env_setenv(char **env, const char *name) |
ba26f296 JS |
858 | { |
859 | char *eq = strchrnul(name, '='); | |
860 | int i = lookup_env(env, name, eq-name); | |
861 | ||
862 | if (i < 0) { | |
863 | if (*eq) { | |
864 | for (i = 0; env[i]; i++) | |
865 | ; | |
866 | env = xrealloc(env, (i+2)*sizeof(*env)); | |
867 | env[i] = xstrdup(name); | |
868 | env[i+1] = NULL; | |
869 | } | |
870 | } | |
871 | else { | |
872 | free(env[i]); | |
873 | if (*eq) | |
874 | env[i] = xstrdup(name); | |
875 | else | |
876 | for (; env[i]; i++) | |
877 | env[i] = env[i+1]; | |
878 | } | |
879 | return env; | |
880 | } | |
881 | ||
2affea41 JS |
882 | /* |
883 | * Copies global environ and adjusts variables as specified by vars. | |
884 | */ | |
885 | char **make_augmented_environ(const char *const *vars) | |
886 | { | |
887 | char **env = copy_environ(); | |
888 | ||
889 | while (*vars) | |
890 | env = env_setenv(env, *vars++); | |
891 | return env; | |
892 | } | |
893 | ||
fe3b2b7b MS |
894 | /* |
895 | * Note, this isn't a complete replacement for getaddrinfo. It assumes | |
896 | * that service contains a numerical port, or that it it is null. It | |
897 | * does a simple search using gethostbyname, and returns one IPv4 host | |
898 | * if one was found. | |
899 | */ | |
900 | static int WSAAPI getaddrinfo_stub(const char *node, const char *service, | |
901 | const struct addrinfo *hints, | |
902 | struct addrinfo **res) | |
903 | { | |
904 | struct hostent *h = gethostbyname(node); | |
905 | struct addrinfo *ai; | |
906 | struct sockaddr_in *sin; | |
907 | ||
908 | if (!h) | |
909 | return WSAGetLastError(); | |
910 | ||
911 | ai = xmalloc(sizeof(struct addrinfo)); | |
912 | *res = ai; | |
913 | ai->ai_flags = 0; | |
914 | ai->ai_family = AF_INET; | |
915 | ai->ai_socktype = hints->ai_socktype; | |
916 | switch (hints->ai_socktype) { | |
917 | case SOCK_STREAM: | |
918 | ai->ai_protocol = IPPROTO_TCP; | |
919 | break; | |
920 | case SOCK_DGRAM: | |
921 | ai->ai_protocol = IPPROTO_UDP; | |
922 | break; | |
923 | default: | |
924 | ai->ai_protocol = 0; | |
925 | break; | |
926 | } | |
927 | ai->ai_addrlen = sizeof(struct sockaddr_in); | |
928 | ai->ai_canonname = strdup(h->h_name); | |
929 | ||
930 | sin = xmalloc(ai->ai_addrlen); | |
931 | memset(sin, 0, ai->ai_addrlen); | |
932 | sin->sin_family = AF_INET; | |
933 | if (service) | |
934 | sin->sin_port = htons(atoi(service)); | |
935 | sin->sin_addr = *(struct in_addr *)h->h_addr; | |
936 | ai->ai_addr = (struct sockaddr *)sin; | |
937 | ai->ai_next = 0; | |
938 | return 0; | |
939 | } | |
940 | ||
941 | static void WSAAPI freeaddrinfo_stub(struct addrinfo *res) | |
942 | { | |
943 | free(res->ai_canonname); | |
944 | free(res->ai_addr); | |
945 | free(res); | |
946 | } | |
947 | ||
948 | static int WSAAPI getnameinfo_stub(const struct sockaddr *sa, socklen_t salen, | |
949 | char *host, DWORD hostlen, | |
950 | char *serv, DWORD servlen, int flags) | |
951 | { | |
952 | const struct sockaddr_in *sin = (const struct sockaddr_in *)sa; | |
953 | if (sa->sa_family != AF_INET) | |
954 | return EAI_FAMILY; | |
955 | if (!host && !serv) | |
956 | return EAI_NONAME; | |
957 | ||
958 | if (host && hostlen > 0) { | |
959 | struct hostent *ent = NULL; | |
960 | if (!(flags & NI_NUMERICHOST)) | |
961 | ent = gethostbyaddr((const char *)&sin->sin_addr, | |
962 | sizeof(sin->sin_addr), AF_INET); | |
963 | ||
964 | if (ent) | |
965 | snprintf(host, hostlen, "%s", ent->h_name); | |
966 | else if (flags & NI_NAMEREQD) | |
967 | return EAI_NONAME; | |
968 | else | |
969 | snprintf(host, hostlen, "%s", inet_ntoa(sin->sin_addr)); | |
970 | } | |
971 | ||
972 | if (serv && servlen > 0) { | |
973 | struct servent *ent = NULL; | |
974 | if (!(flags & NI_NUMERICSERV)) | |
975 | ent = getservbyport(sin->sin_port, | |
976 | flags & NI_DGRAM ? "udp" : "tcp"); | |
977 | ||
978 | if (ent) | |
979 | snprintf(serv, servlen, "%s", ent->s_name); | |
980 | else | |
981 | snprintf(serv, servlen, "%d", ntohs(sin->sin_port)); | |
982 | } | |
983 | ||
984 | return 0; | |
985 | } | |
986 | ||
987 | static HMODULE ipv6_dll = NULL; | |
988 | static void (WSAAPI *ipv6_freeaddrinfo)(struct addrinfo *res); | |
989 | static int (WSAAPI *ipv6_getaddrinfo)(const char *node, const char *service, | |
990 | const struct addrinfo *hints, | |
991 | struct addrinfo **res); | |
992 | static int (WSAAPI *ipv6_getnameinfo)(const struct sockaddr *sa, socklen_t salen, | |
993 | char *host, DWORD hostlen, | |
994 | char *serv, DWORD servlen, int flags); | |
995 | /* | |
996 | * gai_strerror is an inline function in the ws2tcpip.h header, so we | |
997 | * don't need to try to load that one dynamically. | |
998 | */ | |
999 | ||
1000 | static void socket_cleanup(void) | |
1001 | { | |
1002 | WSACleanup(); | |
1003 | if (ipv6_dll) | |
1004 | FreeLibrary(ipv6_dll); | |
1005 | ipv6_dll = NULL; | |
1006 | ipv6_freeaddrinfo = freeaddrinfo_stub; | |
1007 | ipv6_getaddrinfo = getaddrinfo_stub; | |
1008 | ipv6_getnameinfo = getnameinfo_stub; | |
1009 | } | |
1010 | ||
b7cc9f82 | 1011 | static void ensure_socket_initialization(void) |
746fb857 JS |
1012 | { |
1013 | WSADATA wsa; | |
b7cc9f82 | 1014 | static int initialized = 0; |
fe3b2b7b MS |
1015 | const char *libraries[] = { "ws2_32.dll", "wship6.dll", NULL }; |
1016 | const char **name; | |
b7cc9f82 MS |
1017 | |
1018 | if (initialized) | |
1019 | return; | |
746fb857 JS |
1020 | |
1021 | if (WSAStartup(MAKEWORD(2,2), &wsa)) | |
1022 | die("unable to initialize winsock subsystem, error %d", | |
1023 | WSAGetLastError()); | |
fe3b2b7b MS |
1024 | |
1025 | for (name = libraries; *name; name++) { | |
1026 | ipv6_dll = LoadLibrary(*name); | |
1027 | if (!ipv6_dll) | |
1028 | continue; | |
1029 | ||
1030 | ipv6_freeaddrinfo = (void (WSAAPI *)(struct addrinfo *)) | |
1031 | GetProcAddress(ipv6_dll, "freeaddrinfo"); | |
1032 | ipv6_getaddrinfo = (int (WSAAPI *)(const char *, const char *, | |
1033 | const struct addrinfo *, | |
1034 | struct addrinfo **)) | |
1035 | GetProcAddress(ipv6_dll, "getaddrinfo"); | |
1036 | ipv6_getnameinfo = (int (WSAAPI *)(const struct sockaddr *, | |
1037 | socklen_t, char *, DWORD, | |
1038 | char *, DWORD, int)) | |
1039 | GetProcAddress(ipv6_dll, "getnameinfo"); | |
1040 | if (!ipv6_freeaddrinfo || !ipv6_getaddrinfo || !ipv6_getnameinfo) { | |
1041 | FreeLibrary(ipv6_dll); | |
1042 | ipv6_dll = NULL; | |
1043 | } else | |
1044 | break; | |
1045 | } | |
1046 | if (!ipv6_freeaddrinfo || !ipv6_getaddrinfo || !ipv6_getnameinfo) { | |
1047 | ipv6_freeaddrinfo = freeaddrinfo_stub; | |
1048 | ipv6_getaddrinfo = getaddrinfo_stub; | |
1049 | ipv6_getnameinfo = getnameinfo_stub; | |
1050 | } | |
1051 | ||
1052 | atexit(socket_cleanup); | |
b7cc9f82 MS |
1053 | initialized = 1; |
1054 | } | |
1055 | ||
1056 | #undef gethostbyname | |
1057 | struct hostent *mingw_gethostbyname(const char *host) | |
1058 | { | |
1059 | ensure_socket_initialization(); | |
746fb857 JS |
1060 | return gethostbyname(host); |
1061 | } | |
1062 | ||
fe3b2b7b MS |
1063 | void mingw_freeaddrinfo(struct addrinfo *res) |
1064 | { | |
1065 | ipv6_freeaddrinfo(res); | |
1066 | } | |
1067 | ||
1068 | int mingw_getaddrinfo(const char *node, const char *service, | |
1069 | const struct addrinfo *hints, struct addrinfo **res) | |
1070 | { | |
1071 | ensure_socket_initialization(); | |
1072 | return ipv6_getaddrinfo(node, service, hints, res); | |
1073 | } | |
1074 | ||
1075 | int mingw_getnameinfo(const struct sockaddr *sa, socklen_t salen, | |
1076 | char *host, DWORD hostlen, char *serv, DWORD servlen, | |
1077 | int flags) | |
1078 | { | |
1079 | ensure_socket_initialization(); | |
1080 | return ipv6_getnameinfo(sa, salen, host, hostlen, serv, servlen, flags); | |
1081 | } | |
1082 | ||
746fb857 JS |
1083 | int mingw_socket(int domain, int type, int protocol) |
1084 | { | |
1085 | int sockfd; | |
1086 | SOCKET s = WSASocket(domain, type, protocol, NULL, 0, 0); | |
1087 | if (s == INVALID_SOCKET) { | |
1088 | /* | |
1089 | * WSAGetLastError() values are regular BSD error codes | |
1090 | * biased by WSABASEERR. | |
1091 | * However, strerror() does not know about networking | |
1092 | * specific errors, which are values beginning at 38 or so. | |
1093 | * Therefore, we choose to leave the biased error code | |
1094 | * in errno so that _if_ someone looks up the code somewhere, | |
1095 | * then it is at least the number that are usually listed. | |
1096 | */ | |
1097 | errno = WSAGetLastError(); | |
1098 | return -1; | |
1099 | } | |
1100 | /* convert into a file descriptor */ | |
1101 | if ((sockfd = _open_osfhandle(s, O_RDWR|O_BINARY)) < 0) { | |
1102 | closesocket(s); | |
1103 | return error("unable to make a socket file descriptor: %s", | |
1104 | strerror(errno)); | |
1105 | } | |
1106 | return sockfd; | |
1107 | } | |
1108 | ||
1109 | #undef connect | |
1110 | int mingw_connect(int sockfd, struct sockaddr *sa, size_t sz) | |
1111 | { | |
1112 | SOCKET s = (SOCKET)_get_osfhandle(sockfd); | |
1113 | return connect(s, sa, sz); | |
1114 | } | |
1115 | ||
ea9e98c3 JS |
1116 | #undef rename |
1117 | int mingw_rename(const char *pold, const char *pnew) | |
1118 | { | |
6ac6f878 JS |
1119 | DWORD attrs, gle; |
1120 | int tries = 0; | |
1121 | static const int delay[] = { 0, 1, 10, 20, 40 }; | |
632f7017 | 1122 | |
ea9e98c3 JS |
1123 | /* |
1124 | * Try native rename() first to get errno right. | |
1125 | * It is based on MoveFile(), which cannot overwrite existing files. | |
1126 | */ | |
1127 | if (!rename(pold, pnew)) | |
1128 | return 0; | |
1129 | if (errno != EEXIST) | |
1130 | return -1; | |
6ac6f878 | 1131 | repeat: |
ea9e98c3 JS |
1132 | if (MoveFileEx(pold, pnew, MOVEFILE_REPLACE_EXISTING)) |
1133 | return 0; | |
1134 | /* TODO: translate more errors */ | |
6ac6f878 JS |
1135 | gle = GetLastError(); |
1136 | if (gle == ERROR_ACCESS_DENIED && | |
632f7017 JS |
1137 | (attrs = GetFileAttributes(pnew)) != INVALID_FILE_ATTRIBUTES) { |
1138 | if (attrs & FILE_ATTRIBUTE_DIRECTORY) { | |
ea9e98c3 JS |
1139 | errno = EISDIR; |
1140 | return -1; | |
1141 | } | |
632f7017 JS |
1142 | if ((attrs & FILE_ATTRIBUTE_READONLY) && |
1143 | SetFileAttributes(pnew, attrs & ~FILE_ATTRIBUTE_READONLY)) { | |
1144 | if (MoveFileEx(pold, pnew, MOVEFILE_REPLACE_EXISTING)) | |
1145 | return 0; | |
6ac6f878 | 1146 | gle = GetLastError(); |
632f7017 JS |
1147 | /* revert file attributes on failure */ |
1148 | SetFileAttributes(pnew, attrs); | |
1149 | } | |
ea9e98c3 | 1150 | } |
6ac6f878 JS |
1151 | if (tries < ARRAY_SIZE(delay) && gle == ERROR_ACCESS_DENIED) { |
1152 | /* | |
1153 | * We assume that some other process had the source or | |
1154 | * destination file open at the wrong moment and retry. | |
1155 | * In order to give the other process a higher chance to | |
1156 | * complete its operation, we give up our time slice now. | |
1157 | * If we have to retry again, we do sleep a bit. | |
1158 | */ | |
1159 | Sleep(delay[tries]); | |
1160 | tries++; | |
1161 | goto repeat; | |
1162 | } | |
ea9e98c3 JS |
1163 | errno = EACCES; |
1164 | return -1; | |
1165 | } | |
1166 | ||
b1b95204 RJ |
1167 | /* |
1168 | * Note that this doesn't return the actual pagesize, but | |
1169 | * the allocation granularity. If future Windows specific git code | |
1170 | * needs the real getpagesize function, we need to find another solution. | |
1171 | */ | |
1172 | int mingw_getpagesize(void) | |
1173 | { | |
1174 | SYSTEM_INFO si; | |
1175 | GetSystemInfo(&si); | |
1176 | return si.dwAllocationGranularity; | |
1177 | } | |
1178 | ||
f4626df5 JS |
1179 | struct passwd *getpwuid(int uid) |
1180 | { | |
f7597aca | 1181 | static char user_name[100]; |
f4626df5 | 1182 | static struct passwd p; |
f7597aca JS |
1183 | |
1184 | DWORD len = sizeof(user_name); | |
1185 | if (!GetUserName(user_name, &len)) | |
1186 | return NULL; | |
1187 | p.pw_name = user_name; | |
1188 | p.pw_gecos = "unknown"; | |
1189 | p.pw_dir = NULL; | |
f4626df5 JS |
1190 | return &p; |
1191 | } | |
1192 | ||
6072fc31 JS |
1193 | static HANDLE timer_event; |
1194 | static HANDLE timer_thread; | |
1195 | static int timer_interval; | |
1196 | static int one_shot; | |
1197 | static sig_handler_t timer_fn = SIG_DFL; | |
1198 | ||
1199 | /* The timer works like this: | |
1200 | * The thread, ticktack(), is a trivial routine that most of the time | |
1201 | * only waits to receive the signal to terminate. The main thread tells | |
1202 | * the thread to terminate by setting the timer_event to the signalled | |
1203 | * state. | |
1204 | * But ticktack() interrupts the wait state after the timer's interval | |
1205 | * length to call the signal handler. | |
1206 | */ | |
1207 | ||
d7fa500f | 1208 | static unsigned __stdcall ticktack(void *dummy) |
6072fc31 JS |
1209 | { |
1210 | while (WaitForSingleObject(timer_event, timer_interval) == WAIT_TIMEOUT) { | |
1211 | if (timer_fn == SIG_DFL) | |
1212 | die("Alarm"); | |
1213 | if (timer_fn != SIG_IGN) | |
1214 | timer_fn(SIGALRM); | |
1215 | if (one_shot) | |
1216 | break; | |
1217 | } | |
1218 | return 0; | |
1219 | } | |
1220 | ||
1221 | static int start_timer_thread(void) | |
1222 | { | |
1223 | timer_event = CreateEvent(NULL, FALSE, FALSE, NULL); | |
1224 | if (timer_event) { | |
1225 | timer_thread = (HANDLE) _beginthreadex(NULL, 0, ticktack, NULL, 0, NULL); | |
1226 | if (!timer_thread ) | |
1227 | return errno = ENOMEM, | |
1228 | error("cannot start timer thread"); | |
1229 | } else | |
1230 | return errno = ENOMEM, | |
1231 | error("cannot allocate resources for timer"); | |
1232 | return 0; | |
1233 | } | |
1234 | ||
1235 | static void stop_timer_thread(void) | |
1236 | { | |
1237 | if (timer_event) | |
1238 | SetEvent(timer_event); /* tell thread to terminate */ | |
1239 | if (timer_thread) { | |
1240 | int rc = WaitForSingleObject(timer_thread, 1000); | |
1241 | if (rc == WAIT_TIMEOUT) | |
1242 | error("timer thread did not terminate timely"); | |
1243 | else if (rc != WAIT_OBJECT_0) | |
1244 | error("waiting for timer thread failed: %lu", | |
1245 | GetLastError()); | |
1246 | CloseHandle(timer_thread); | |
1247 | } | |
1248 | if (timer_event) | |
1249 | CloseHandle(timer_event); | |
1250 | timer_event = NULL; | |
1251 | timer_thread = NULL; | |
1252 | } | |
1253 | ||
1254 | static inline int is_timeval_eq(const struct timeval *i1, const struct timeval *i2) | |
1255 | { | |
1256 | return i1->tv_sec == i2->tv_sec && i1->tv_usec == i2->tv_usec; | |
1257 | } | |
1258 | ||
f4626df5 JS |
1259 | int setitimer(int type, struct itimerval *in, struct itimerval *out) |
1260 | { | |
6072fc31 JS |
1261 | static const struct timeval zero; |
1262 | static int atexit_done; | |
1263 | ||
1264 | if (out != NULL) | |
1265 | return errno = EINVAL, | |
1266 | error("setitimer param 3 != NULL not implemented"); | |
1267 | if (!is_timeval_eq(&in->it_interval, &zero) && | |
1268 | !is_timeval_eq(&in->it_interval, &in->it_value)) | |
1269 | return errno = EINVAL, | |
1270 | error("setitimer: it_interval must be zero or eq it_value"); | |
1271 | ||
1272 | if (timer_thread) | |
1273 | stop_timer_thread(); | |
1274 | ||
1275 | if (is_timeval_eq(&in->it_value, &zero) && | |
1276 | is_timeval_eq(&in->it_interval, &zero)) | |
1277 | return 0; | |
1278 | ||
1279 | timer_interval = in->it_value.tv_sec * 1000 + in->it_value.tv_usec / 1000; | |
1280 | one_shot = is_timeval_eq(&in->it_interval, &zero); | |
1281 | if (!atexit_done) { | |
1282 | atexit(stop_timer_thread); | |
1283 | atexit_done = 1; | |
1284 | } | |
1285 | return start_timer_thread(); | |
f4626df5 JS |
1286 | } |
1287 | ||
1288 | int sigaction(int sig, struct sigaction *in, struct sigaction *out) | |
1289 | { | |
6072fc31 JS |
1290 | if (sig != SIGALRM) |
1291 | return errno = EINVAL, | |
1292 | error("sigaction only implemented for SIGALRM"); | |
1293 | if (out != NULL) | |
1294 | return errno = EINVAL, | |
1295 | error("sigaction: param 3 != NULL not implemented"); | |
1296 | ||
1297 | timer_fn = in->sa_handler; | |
1298 | return 0; | |
1299 | } | |
1300 | ||
1301 | #undef signal | |
1302 | sig_handler_t mingw_signal(int sig, sig_handler_t handler) | |
1303 | { | |
0d30ad71 | 1304 | sig_handler_t old = timer_fn; |
6072fc31 JS |
1305 | if (sig != SIGALRM) |
1306 | return signal(sig, handler); | |
6072fc31 JS |
1307 | timer_fn = handler; |
1308 | return old; | |
f4626df5 | 1309 | } |
4804aabc SP |
1310 | |
1311 | static const char *make_backslash_path(const char *path) | |
1312 | { | |
1313 | static char buf[PATH_MAX + 1]; | |
1314 | char *c; | |
1315 | ||
1316 | if (strlcpy(buf, path, PATH_MAX) >= PATH_MAX) | |
1317 | die("Too long path: %.*s", 60, path); | |
1318 | ||
1319 | for (c = buf; *c; c++) { | |
1320 | if (*c == '/') | |
1321 | *c = '\\'; | |
1322 | } | |
1323 | return buf; | |
1324 | } | |
1325 | ||
1326 | void mingw_open_html(const char *unixpath) | |
1327 | { | |
1328 | const char *htmlpath = make_backslash_path(unixpath); | |
928500e0 JS |
1329 | typedef HINSTANCE (WINAPI *T)(HWND, const char *, |
1330 | const char *, const char *, const char *, INT); | |
1331 | T ShellExecute; | |
1332 | HMODULE shell32; | |
1333 | ||
1334 | shell32 = LoadLibrary("shell32.dll"); | |
1335 | if (!shell32) | |
1336 | die("cannot load shell32.dll"); | |
1337 | ShellExecute = (T)GetProcAddress(shell32, "ShellExecuteA"); | |
1338 | if (!ShellExecute) | |
1339 | die("cannot run browser"); | |
1340 | ||
4804aabc SP |
1341 | printf("Launching default browser to display HTML ...\n"); |
1342 | ShellExecute(NULL, "open", htmlpath, NULL, "\\", 0); | |
928500e0 JS |
1343 | |
1344 | FreeLibrary(shell32); | |
4804aabc | 1345 | } |
7be401e0 PK |
1346 | |
1347 | int link(const char *oldpath, const char *newpath) | |
1348 | { | |
d7fa500f | 1349 | typedef BOOL (WINAPI *T)(const char*, const char*, LPSECURITY_ATTRIBUTES); |
7be401e0 PK |
1350 | static T create_hard_link = NULL; |
1351 | if (!create_hard_link) { | |
1352 | create_hard_link = (T) GetProcAddress( | |
1353 | GetModuleHandle("kernel32.dll"), "CreateHardLinkA"); | |
1354 | if (!create_hard_link) | |
1355 | create_hard_link = (T)-1; | |
1356 | } | |
1357 | if (create_hard_link == (T)-1) { | |
1358 | errno = ENOSYS; | |
1359 | return -1; | |
1360 | } | |
1361 | if (!create_hard_link(newpath, oldpath, NULL)) { | |
1362 | errno = err_win_to_posix(GetLastError()); | |
1363 | return -1; | |
1364 | } | |
1365 | return 0; | |
1366 | } | |
0dbbbc1e JS |
1367 | |
1368 | char *getpass(const char *prompt) | |
1369 | { | |
1370 | struct strbuf buf = STRBUF_INIT; | |
1371 | ||
1372 | fputs(prompt, stderr); | |
1373 | for (;;) { | |
1374 | char c = _getch(); | |
1375 | if (c == '\r' || c == '\n') | |
1376 | break; | |
1377 | strbuf_addch(&buf, c); | |
1378 | } | |
1379 | fputs("\n", stderr); | |
1380 | return strbuf_detach(&buf, NULL); | |
1381 | } | |
e16c60d9 MSO |
1382 | |
1383 | #ifndef NO_MINGW_REPLACE_READDIR | |
1384 | /* MinGW readdir implementation to avoid extra lstats for Git */ | |
1385 | struct mingw_DIR | |
1386 | { | |
1387 | struct _finddata_t dd_dta; /* disk transfer area for this dir */ | |
1388 | struct mingw_dirent dd_dir; /* Our own implementation, including d_type */ | |
1389 | long dd_handle; /* _findnext handle */ | |
1390 | int dd_stat; /* 0 = next entry to read is first entry, -1 = off the end, positive = 0 based index of next entry */ | |
1391 | char dd_name[1]; /* given path for dir with search pattern (struct is extended) */ | |
1392 | }; | |
1393 | ||
1394 | struct dirent *mingw_readdir(DIR *dir) | |
1395 | { | |
1396 | WIN32_FIND_DATAA buf; | |
1397 | HANDLE handle; | |
1398 | struct mingw_DIR *mdir = (struct mingw_DIR*)dir; | |
1399 | ||
1400 | if (!dir->dd_handle) { | |
1401 | errno = EBADF; /* No set_errno for mingw */ | |
1402 | return NULL; | |
1403 | } | |
1404 | ||
1405 | if (dir->dd_handle == (long)INVALID_HANDLE_VALUE && dir->dd_stat == 0) | |
1406 | { | |
0d30ad71 | 1407 | DWORD lasterr; |
e16c60d9 | 1408 | handle = FindFirstFileA(dir->dd_name, &buf); |
0d30ad71 | 1409 | lasterr = GetLastError(); |
e16c60d9 MSO |
1410 | dir->dd_handle = (long)handle; |
1411 | if (handle == INVALID_HANDLE_VALUE && (lasterr != ERROR_NO_MORE_FILES)) { | |
1412 | errno = err_win_to_posix(lasterr); | |
1413 | return NULL; | |
1414 | } | |
1415 | } else if (dir->dd_handle == (long)INVALID_HANDLE_VALUE) { | |
1416 | return NULL; | |
1417 | } else if (!FindNextFileA((HANDLE)dir->dd_handle, &buf)) { | |
1418 | DWORD lasterr = GetLastError(); | |
1419 | FindClose((HANDLE)dir->dd_handle); | |
1420 | dir->dd_handle = (long)INVALID_HANDLE_VALUE; | |
1421 | /* POSIX says you shouldn't set errno when readdir can't | |
1422 | find any more files; so, if another error we leave it set. */ | |
1423 | if (lasterr != ERROR_NO_MORE_FILES) | |
1424 | errno = err_win_to_posix(lasterr); | |
1425 | return NULL; | |
1426 | } | |
1427 | ||
1428 | /* We get here if `buf' contains valid data. */ | |
1429 | strcpy(dir->dd_dir.d_name, buf.cFileName); | |
1430 | ++dir->dd_stat; | |
1431 | ||
1432 | /* Set file type, based on WIN32_FIND_DATA */ | |
1433 | mdir->dd_dir.d_type = 0; | |
1434 | if (buf.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) | |
1435 | mdir->dd_dir.d_type |= DT_DIR; | |
1436 | else | |
1437 | mdir->dd_dir.d_type |= DT_REG; | |
1438 | ||
1439 | return (struct dirent*)&dir->dd_dir; | |
1440 | } | |
1441 | #endif // !NO_MINGW_REPLACE_READDIR |