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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> |
85faec9d | 4 | #include <wchar.h> |
7e5d7768 | 5 | #include "../strbuf.h" |
c9b78400 | 6 | #include "../run-command.h" |
7eb2619c | 7 | #include "../cache.h" |
564be791 | 8 | #include "win32/lazyload.h" |
f4626df5 | 9 | |
7c00bc39 JS |
10 | #define HCAST(type, handle) ((type)(intptr_t)handle) |
11 | ||
19e12549 HV |
12 | static const int delay[] = { 0, 1, 10, 20, 40 }; |
13 | ||
44626dc7 | 14 | int err_win_to_posix(DWORD winerr) |
b3debd2b PK |
15 | { |
16 | int error = ENOSYS; | |
17 | switch(winerr) { | |
18 | case ERROR_ACCESS_DENIED: error = EACCES; break; | |
19 | case ERROR_ACCOUNT_DISABLED: error = EACCES; break; | |
20 | case ERROR_ACCOUNT_RESTRICTION: error = EACCES; break; | |
21 | case ERROR_ALREADY_ASSIGNED: error = EBUSY; break; | |
22 | case ERROR_ALREADY_EXISTS: error = EEXIST; break; | |
23 | case ERROR_ARITHMETIC_OVERFLOW: error = ERANGE; break; | |
24 | case ERROR_BAD_COMMAND: error = EIO; break; | |
25 | case ERROR_BAD_DEVICE: error = ENODEV; break; | |
26 | case ERROR_BAD_DRIVER_LEVEL: error = ENXIO; break; | |
27 | case ERROR_BAD_EXE_FORMAT: error = ENOEXEC; break; | |
28 | case ERROR_BAD_FORMAT: error = ENOEXEC; break; | |
29 | case ERROR_BAD_LENGTH: error = EINVAL; break; | |
30 | case ERROR_BAD_PATHNAME: error = ENOENT; break; | |
31 | case ERROR_BAD_PIPE: error = EPIPE; break; | |
32 | case ERROR_BAD_UNIT: error = ENODEV; break; | |
33 | case ERROR_BAD_USERNAME: error = EINVAL; break; | |
34 | case ERROR_BROKEN_PIPE: error = EPIPE; break; | |
35 | case ERROR_BUFFER_OVERFLOW: error = ENAMETOOLONG; break; | |
36 | case ERROR_BUSY: error = EBUSY; break; | |
37 | case ERROR_BUSY_DRIVE: error = EBUSY; break; | |
38 | case ERROR_CALL_NOT_IMPLEMENTED: error = ENOSYS; break; | |
39 | case ERROR_CANNOT_MAKE: error = EACCES; break; | |
40 | case ERROR_CANTOPEN: error = EIO; break; | |
41 | case ERROR_CANTREAD: error = EIO; break; | |
42 | case ERROR_CANTWRITE: error = EIO; break; | |
43 | case ERROR_CRC: error = EIO; break; | |
44 | case ERROR_CURRENT_DIRECTORY: error = EACCES; break; | |
45 | case ERROR_DEVICE_IN_USE: error = EBUSY; break; | |
46 | case ERROR_DEV_NOT_EXIST: error = ENODEV; break; | |
47 | case ERROR_DIRECTORY: error = EINVAL; break; | |
48 | case ERROR_DIR_NOT_EMPTY: error = ENOTEMPTY; break; | |
49 | case ERROR_DISK_CHANGE: error = EIO; break; | |
50 | case ERROR_DISK_FULL: error = ENOSPC; break; | |
51 | case ERROR_DRIVE_LOCKED: error = EBUSY; break; | |
52 | case ERROR_ENVVAR_NOT_FOUND: error = EINVAL; break; | |
53 | case ERROR_EXE_MARKED_INVALID: error = ENOEXEC; break; | |
54 | case ERROR_FILENAME_EXCED_RANGE: error = ENAMETOOLONG; break; | |
55 | case ERROR_FILE_EXISTS: error = EEXIST; break; | |
56 | case ERROR_FILE_INVALID: error = ENODEV; break; | |
57 | case ERROR_FILE_NOT_FOUND: error = ENOENT; break; | |
58 | case ERROR_GEN_FAILURE: error = EIO; break; | |
59 | case ERROR_HANDLE_DISK_FULL: error = ENOSPC; break; | |
60 | case ERROR_INSUFFICIENT_BUFFER: error = ENOMEM; break; | |
61 | case ERROR_INVALID_ACCESS: error = EACCES; break; | |
62 | case ERROR_INVALID_ADDRESS: error = EFAULT; break; | |
63 | case ERROR_INVALID_BLOCK: error = EFAULT; break; | |
64 | case ERROR_INVALID_DATA: error = EINVAL; break; | |
65 | case ERROR_INVALID_DRIVE: error = ENODEV; break; | |
66 | case ERROR_INVALID_EXE_SIGNATURE: error = ENOEXEC; break; | |
67 | case ERROR_INVALID_FLAGS: error = EINVAL; break; | |
68 | case ERROR_INVALID_FUNCTION: error = ENOSYS; break; | |
69 | case ERROR_INVALID_HANDLE: error = EBADF; break; | |
70 | case ERROR_INVALID_LOGON_HOURS: error = EACCES; break; | |
71 | case ERROR_INVALID_NAME: error = EINVAL; break; | |
72 | case ERROR_INVALID_OWNER: error = EINVAL; break; | |
73 | case ERROR_INVALID_PARAMETER: error = EINVAL; break; | |
74 | case ERROR_INVALID_PASSWORD: error = EPERM; break; | |
75 | case ERROR_INVALID_PRIMARY_GROUP: error = EINVAL; break; | |
76 | case ERROR_INVALID_SIGNAL_NUMBER: error = EINVAL; break; | |
77 | case ERROR_INVALID_TARGET_HANDLE: error = EIO; break; | |
78 | case ERROR_INVALID_WORKSTATION: error = EACCES; break; | |
79 | case ERROR_IO_DEVICE: error = EIO; break; | |
80 | case ERROR_IO_INCOMPLETE: error = EINTR; break; | |
81 | case ERROR_LOCKED: error = EBUSY; break; | |
82 | case ERROR_LOCK_VIOLATION: error = EACCES; break; | |
83 | case ERROR_LOGON_FAILURE: error = EACCES; break; | |
84 | case ERROR_MAPPED_ALIGNMENT: error = EINVAL; break; | |
85 | case ERROR_META_EXPANSION_TOO_LONG: error = E2BIG; break; | |
86 | case ERROR_MORE_DATA: error = EPIPE; break; | |
87 | case ERROR_NEGATIVE_SEEK: error = ESPIPE; break; | |
88 | case ERROR_NOACCESS: error = EFAULT; break; | |
89 | case ERROR_NONE_MAPPED: error = EINVAL; break; | |
90 | case ERROR_NOT_ENOUGH_MEMORY: error = ENOMEM; break; | |
91 | case ERROR_NOT_READY: error = EAGAIN; break; | |
92 | case ERROR_NOT_SAME_DEVICE: error = EXDEV; break; | |
93 | case ERROR_NO_DATA: error = EPIPE; break; | |
94 | case ERROR_NO_MORE_SEARCH_HANDLES: error = EIO; break; | |
95 | case ERROR_NO_PROC_SLOTS: error = EAGAIN; break; | |
96 | case ERROR_NO_SUCH_PRIVILEGE: error = EACCES; break; | |
97 | case ERROR_OPEN_FAILED: error = EIO; break; | |
98 | case ERROR_OPEN_FILES: error = EBUSY; break; | |
99 | case ERROR_OPERATION_ABORTED: error = EINTR; break; | |
100 | case ERROR_OUTOFMEMORY: error = ENOMEM; break; | |
101 | case ERROR_PASSWORD_EXPIRED: error = EACCES; break; | |
102 | case ERROR_PATH_BUSY: error = EBUSY; break; | |
103 | case ERROR_PATH_NOT_FOUND: error = ENOENT; break; | |
104 | case ERROR_PIPE_BUSY: error = EBUSY; break; | |
105 | case ERROR_PIPE_CONNECTED: error = EPIPE; break; | |
106 | case ERROR_PIPE_LISTENING: error = EPIPE; break; | |
107 | case ERROR_PIPE_NOT_CONNECTED: error = EPIPE; break; | |
108 | case ERROR_PRIVILEGE_NOT_HELD: error = EACCES; break; | |
109 | case ERROR_READ_FAULT: error = EIO; break; | |
110 | case ERROR_SEEK: error = EIO; break; | |
111 | case ERROR_SEEK_ON_DEVICE: error = ESPIPE; break; | |
112 | case ERROR_SHARING_BUFFER_EXCEEDED: error = ENFILE; break; | |
113 | case ERROR_SHARING_VIOLATION: error = EACCES; break; | |
114 | case ERROR_STACK_OVERFLOW: error = ENOMEM; break; | |
115 | case ERROR_SWAPERROR: error = ENOENT; break; | |
116 | case ERROR_TOO_MANY_MODULES: error = EMFILE; break; | |
117 | case ERROR_TOO_MANY_OPEN_FILES: error = EMFILE; break; | |
118 | case ERROR_UNRECOGNIZED_MEDIA: error = ENXIO; break; | |
119 | case ERROR_UNRECOGNIZED_VOLUME: error = ENODEV; break; | |
120 | case ERROR_WAIT_NO_CHILDREN: error = ECHILD; break; | |
121 | case ERROR_WRITE_FAULT: error = EIO; break; | |
122 | case ERROR_WRITE_PROTECT: error = EROFS; break; | |
123 | } | |
124 | return error; | |
125 | } | |
126 | ||
19e12549 HV |
127 | static inline int is_file_in_use_error(DWORD errcode) |
128 | { | |
129 | switch (errcode) { | |
130 | case ERROR_SHARING_VIOLATION: | |
131 | case ERROR_ACCESS_DENIED: | |
132 | return 1; | |
133 | } | |
134 | ||
135 | return 0; | |
136 | } | |
137 | ||
c9b78400 HV |
138 | static int read_yes_no_answer(void) |
139 | { | |
140 | char answer[1024]; | |
141 | ||
142 | if (fgets(answer, sizeof(answer), stdin)) { | |
143 | size_t answer_len = strlen(answer); | |
144 | int got_full_line = 0, c; | |
145 | ||
146 | /* remove the newline */ | |
147 | if (answer_len >= 2 && answer[answer_len-2] == '\r') { | |
148 | answer[answer_len-2] = '\0'; | |
149 | got_full_line = 1; | |
150 | } else if (answer_len >= 1 && answer[answer_len-1] == '\n') { | |
151 | answer[answer_len-1] = '\0'; | |
152 | got_full_line = 1; | |
153 | } | |
154 | /* flush the buffer in case we did not get the full line */ | |
155 | if (!got_full_line) | |
156 | while ((c = getchar()) != EOF && c != '\n') | |
157 | ; | |
158 | } else | |
159 | /* we could not read, return the | |
160 | * default answer which is no */ | |
161 | return 0; | |
162 | ||
163 | if (tolower(answer[0]) == 'y' && !answer[1]) | |
164 | return 1; | |
165 | if (!strncasecmp(answer, "yes", sizeof(answer))) | |
166 | return 1; | |
167 | if (tolower(answer[0]) == 'n' && !answer[1]) | |
168 | return 0; | |
169 | if (!strncasecmp(answer, "no", sizeof(answer))) | |
170 | return 0; | |
171 | ||
172 | /* did not find an answer we understand */ | |
173 | return -1; | |
174 | } | |
175 | ||
176 | static int ask_yes_no_if_possible(const char *format, ...) | |
177 | { | |
178 | char question[4096]; | |
179 | const char *retry_hook[] = { NULL, NULL, NULL }; | |
180 | va_list args; | |
181 | ||
182 | va_start(args, format); | |
183 | vsnprintf(question, sizeof(question), format, args); | |
184 | va_end(args); | |
185 | ||
06bc4b79 | 186 | if ((retry_hook[0] = mingw_getenv("GIT_ASK_YESNO"))) { |
c9b78400 HV |
187 | retry_hook[1] = question; |
188 | return !run_command_v_opt(retry_hook, 0); | |
189 | } | |
190 | ||
191 | if (!isatty(_fileno(stdin)) || !isatty(_fileno(stderr))) | |
192 | return 0; | |
193 | ||
194 | while (1) { | |
195 | int answer; | |
196 | fprintf(stderr, "%s (y/n) ", question); | |
197 | ||
198 | if ((answer = read_yes_no_answer()) >= 0) | |
199 | return answer; | |
200 | ||
201 | fprintf(stderr, "Sorry, I did not understand your answer. " | |
202 | "Please type 'y' or 'n'\n"); | |
203 | } | |
204 | } | |
205 | ||
4745feeb AS |
206 | /* Normalizes NT paths as returned by some low-level APIs. */ |
207 | static wchar_t *normalize_ntpath(wchar_t *wbuf) | |
208 | { | |
209 | int i; | |
210 | /* fix absolute path prefixes */ | |
211 | if (wbuf[0] == '\\') { | |
212 | /* strip NT namespace prefixes */ | |
213 | if (!wcsncmp(wbuf, L"\\??\\", 4) || | |
214 | !wcsncmp(wbuf, L"\\\\?\\", 4)) | |
215 | wbuf += 4; | |
216 | else if (!wcsnicmp(wbuf, L"\\DosDevices\\", 12)) | |
217 | wbuf += 12; | |
218 | /* replace remaining '...UNC\' with '\\' */ | |
219 | if (!wcsnicmp(wbuf, L"UNC\\", 4)) { | |
220 | wbuf += 2; | |
221 | *wbuf = '\\'; | |
222 | } | |
223 | } | |
224 | /* convert backslashes to slashes */ | |
225 | for (i = 0; wbuf[i]; i++) | |
226 | if (wbuf[i] == '\\') | |
227 | wbuf[i] = '/'; | |
228 | return wbuf; | |
229 | } | |
230 | ||
337967fb HV |
231 | int mingw_unlink(const char *pathname) |
232 | { | |
19e12549 | 233 | int ret, tries = 0; |
85faec9d KB |
234 | wchar_t wpathname[MAX_PATH]; |
235 | if (xutftowcs_path(wpathname, pathname) < 0) | |
236 | return -1; | |
19e12549 | 237 | |
337967fb | 238 | /* read-only files cannot be removed */ |
85faec9d KB |
239 | _wchmod(wpathname, 0666); |
240 | while ((ret = _wunlink(wpathname)) == -1 && tries < ARRAY_SIZE(delay)) { | |
19e12549 HV |
241 | if (!is_file_in_use_error(GetLastError())) |
242 | break; | |
243 | /* | |
244 | * We assume that some other process had the source or | |
245 | * destination file open at the wrong moment and retry. | |
246 | * In order to give the other process a higher chance to | |
247 | * complete its operation, we give up our time slice now. | |
248 | * If we have to retry again, we do sleep a bit. | |
249 | */ | |
250 | Sleep(delay[tries]); | |
251 | tries++; | |
252 | } | |
c9b78400 HV |
253 | while (ret == -1 && is_file_in_use_error(GetLastError()) && |
254 | ask_yes_no_if_possible("Unlink of file '%s' failed. " | |
255 | "Should I try again?", pathname)) | |
85faec9d | 256 | ret = _wunlink(wpathname); |
19e12549 | 257 | return ret; |
337967fb HV |
258 | } |
259 | ||
85faec9d | 260 | static int is_dir_empty(const wchar_t *wpath) |
ab1a11be | 261 | { |
85faec9d | 262 | WIN32_FIND_DATAW findbuf; |
ab1a11be | 263 | HANDLE handle; |
85faec9d KB |
264 | wchar_t wbuf[MAX_PATH + 2]; |
265 | wcscpy(wbuf, wpath); | |
266 | wcscat(wbuf, L"\\*"); | |
267 | handle = FindFirstFileW(wbuf, &findbuf); | |
268 | if (handle == INVALID_HANDLE_VALUE) | |
ab1a11be | 269 | return GetLastError() == ERROR_NO_MORE_FILES; |
ab1a11be | 270 | |
85faec9d KB |
271 | while (!wcscmp(findbuf.cFileName, L".") || |
272 | !wcscmp(findbuf.cFileName, L"..")) | |
273 | if (!FindNextFileW(handle, &findbuf)) { | |
274 | DWORD err = GetLastError(); | |
275 | FindClose(handle); | |
276 | return err == ERROR_NO_MORE_FILES; | |
ab1a11be JS |
277 | } |
278 | FindClose(handle); | |
ab1a11be JS |
279 | return 0; |
280 | } | |
281 | ||
4f288100 HV |
282 | int mingw_rmdir(const char *pathname) |
283 | { | |
284 | int ret, tries = 0; | |
85faec9d KB |
285 | wchar_t wpathname[MAX_PATH]; |
286 | if (xutftowcs_path(wpathname, pathname) < 0) | |
287 | return -1; | |
4f288100 | 288 | |
85faec9d | 289 | while ((ret = _wrmdir(wpathname)) == -1 && tries < ARRAY_SIZE(delay)) { |
4f288100 | 290 | if (!is_file_in_use_error(GetLastError())) |
a83b2b57 EFL |
291 | errno = err_win_to_posix(GetLastError()); |
292 | if (errno != EACCES) | |
4f288100 | 293 | break; |
85faec9d | 294 | if (!is_dir_empty(wpathname)) { |
ab1a11be JS |
295 | errno = ENOTEMPTY; |
296 | break; | |
297 | } | |
4f288100 HV |
298 | /* |
299 | * We assume that some other process had the source or | |
300 | * destination file open at the wrong moment and retry. | |
301 | * In order to give the other process a higher chance to | |
302 | * complete its operation, we give up our time slice now. | |
303 | * If we have to retry again, we do sleep a bit. | |
304 | */ | |
305 | Sleep(delay[tries]); | |
306 | tries++; | |
307 | } | |
a83b2b57 | 308 | while (ret == -1 && errno == EACCES && is_file_in_use_error(GetLastError()) && |
4f288100 HV |
309 | ask_yes_no_if_possible("Deletion of directory '%s' failed. " |
310 | "Should I try again?", pathname)) | |
85faec9d KB |
311 | ret = _wrmdir(wpathname); |
312 | return ret; | |
313 | } | |
314 | ||
f30afdab JS |
315 | static inline int needs_hiding(const char *path) |
316 | { | |
317 | const char *basename; | |
318 | ||
319 | if (hide_dotfiles == HIDE_DOTFILES_FALSE) | |
320 | return 0; | |
321 | ||
322 | /* We cannot use basename(), as it would remove trailing slashes */ | |
323 | mingw_skip_dos_drive_prefix((char **)&path); | |
324 | if (!*path) | |
325 | return 0; | |
326 | ||
327 | for (basename = path; *path; path++) | |
328 | if (is_dir_sep(*path)) { | |
329 | do { | |
330 | path++; | |
331 | } while (is_dir_sep(*path)); | |
332 | /* ignore trailing slashes */ | |
333 | if (*path) | |
334 | basename = path; | |
335 | } | |
336 | ||
337 | if (hide_dotfiles == HIDE_DOTFILES_TRUE) | |
338 | return *basename == '.'; | |
339 | ||
340 | assert(hide_dotfiles == HIDE_DOTFILES_DOTGITONLY); | |
341 | return !strncasecmp(".git", basename, 4) && | |
342 | (!basename[4] || is_dir_sep(basename[4])); | |
343 | } | |
344 | ||
345 | static int set_hidden_flag(const wchar_t *path, int set) | |
346 | { | |
347 | DWORD original = GetFileAttributesW(path), modified; | |
348 | if (set) | |
349 | modified = original | FILE_ATTRIBUTE_HIDDEN; | |
350 | else | |
351 | modified = original & ~FILE_ATTRIBUTE_HIDDEN; | |
352 | if (original == modified || SetFileAttributesW(path, modified)) | |
353 | return 0; | |
354 | errno = err_win_to_posix(GetLastError()); | |
355 | return -1; | |
356 | } | |
357 | ||
85faec9d KB |
358 | int mingw_mkdir(const char *path, int mode) |
359 | { | |
360 | int ret; | |
361 | wchar_t wpath[MAX_PATH]; | |
362 | if (xutftowcs_path(wpath, path) < 0) | |
363 | return -1; | |
364 | ret = _wmkdir(wpath); | |
f30afdab JS |
365 | if (!ret && needs_hiding(path)) |
366 | return set_hidden_flag(wpath, 1); | |
4f288100 HV |
367 | return ret; |
368 | } | |
369 | ||
eeaf7dda JH |
370 | /* |
371 | * Calling CreateFile() using FILE_APPEND_DATA and without FILE_WRITE_DATA | |
372 | * is documented in [1] as opening a writable file handle in append mode. | |
373 | * (It is believed that) this is atomic since it is maintained by the | |
374 | * kernel unlike the O_APPEND flag which is racily maintained by the CRT. | |
375 | * | |
376 | * [1] https://docs.microsoft.com/en-us/windows/desktop/fileio/file-access-rights-constants | |
377 | * | |
378 | * This trick does not appear to work for named pipes. Instead it creates | |
379 | * a named pipe client handle that cannot be written to. Callers should | |
380 | * just use the regular _wopen() for them. (And since client handle gets | |
381 | * bound to a unique server handle, it isn't really an issue.) | |
382 | */ | |
d6410975 JS |
383 | static int mingw_open_append(wchar_t const *wfilename, int oflags, ...) |
384 | { | |
385 | HANDLE handle; | |
386 | int fd; | |
387 | DWORD create = (oflags & O_CREAT) ? OPEN_ALWAYS : OPEN_EXISTING; | |
388 | ||
389 | /* only these flags are supported */ | |
390 | if ((oflags & ~O_CREAT) != (O_WRONLY | O_APPEND)) | |
391 | return errno = ENOSYS, -1; | |
392 | ||
393 | /* | |
394 | * FILE_SHARE_WRITE is required to permit child processes | |
395 | * to append to the file. | |
396 | */ | |
397 | handle = CreateFileW(wfilename, FILE_APPEND_DATA, | |
398 | FILE_SHARE_WRITE | FILE_SHARE_READ, | |
399 | NULL, create, FILE_ATTRIBUTE_NORMAL, NULL); | |
400 | if (handle == INVALID_HANDLE_VALUE) | |
401 | return errno = err_win_to_posix(GetLastError()), -1; | |
eeaf7dda | 402 | |
d6410975 JS |
403 | /* |
404 | * No O_APPEND here, because the CRT uses it only to reset the | |
eeaf7dda JH |
405 | * file pointer to EOF before each write(); but that is not |
406 | * necessary (and may lead to races) for a file created with | |
407 | * FILE_APPEND_DATA. | |
d6410975 JS |
408 | */ |
409 | fd = _open_osfhandle((intptr_t)handle, O_BINARY); | |
410 | if (fd < 0) | |
411 | CloseHandle(handle); | |
412 | return fd; | |
413 | } | |
414 | ||
eeaf7dda JH |
415 | /* |
416 | * Does the pathname map to the local named pipe filesystem? | |
417 | * That is, does it have a "//./pipe/" prefix? | |
418 | */ | |
419 | static int is_local_named_pipe_path(const char *filename) | |
420 | { | |
421 | return (is_dir_sep(filename[0]) && | |
422 | is_dir_sep(filename[1]) && | |
423 | filename[2] == '.' && | |
424 | is_dir_sep(filename[3]) && | |
425 | !strncasecmp(filename+4, "pipe", 4) && | |
426 | is_dir_sep(filename[8]) && | |
427 | filename[9]); | |
428 | } | |
429 | ||
3e4a1ba0 JS |
430 | int mingw_open (const char *filename, int oflags, ...) |
431 | { | |
d6410975 | 432 | typedef int (*open_fn_t)(wchar_t const *wfilename, int oflags, ...); |
3e4a1ba0 JS |
433 | va_list args; |
434 | unsigned mode; | |
0d30ad71 | 435 | int fd; |
85faec9d | 436 | wchar_t wfilename[MAX_PATH]; |
d6410975 | 437 | open_fn_t open_fn; |
0d30ad71 | 438 | |
3e4a1ba0 JS |
439 | va_start(args, oflags); |
440 | mode = va_arg(args, int); | |
441 | va_end(args); | |
442 | ||
1a404209 | 443 | if (filename && !strcmp(filename, "/dev/null")) |
3e4a1ba0 | 444 | filename = "nul"; |
0d30ad71 | 445 | |
eeaf7dda | 446 | if ((oflags & O_APPEND) && !is_local_named_pipe_path(filename)) |
d6410975 JS |
447 | open_fn = mingw_open_append; |
448 | else | |
449 | open_fn = _wopen; | |
450 | ||
85faec9d KB |
451 | if (xutftowcs_path(wfilename, filename) < 0) |
452 | return -1; | |
d6410975 | 453 | fd = open_fn(wfilename, oflags, mode); |
0d30ad71 | 454 | |
ba6fad02 | 455 | if (fd < 0 && (oflags & O_ACCMODE) != O_RDONLY && errno == EACCES) { |
85faec9d | 456 | DWORD attrs = GetFileAttributesW(wfilename); |
3e4a1ba0 JS |
457 | if (attrs != INVALID_FILE_ATTRIBUTES && (attrs & FILE_ATTRIBUTE_DIRECTORY)) |
458 | errno = EISDIR; | |
459 | } | |
f30afdab JS |
460 | if ((oflags & O_CREAT) && needs_hiding(filename)) { |
461 | /* | |
462 | * Internally, _wopen() uses the CreateFile() API which errors | |
463 | * out with an ERROR_ACCESS_DENIED if CREATE_ALWAYS was | |
464 | * specified and an already existing file's attributes do not | |
465 | * match *exactly*. As there is no mode or flag we can set that | |
466 | * would correspond to FILE_ATTRIBUTE_HIDDEN, let's just try | |
467 | * again *without* the O_CREAT flag (that corresponds to the | |
468 | * CREATE_ALWAYS flag of CreateFile()). | |
469 | */ | |
470 | if (fd < 0 && errno == EACCES) | |
d6410975 | 471 | fd = open_fn(wfilename, oflags & ~O_CREAT, mode); |
f30afdab JS |
472 | if (fd >= 0 && set_hidden_flag(wfilename, 1)) |
473 | warning("could not mark '%s' as hidden.", filename); | |
474 | } | |
3e4a1ba0 JS |
475 | return fd; |
476 | } | |
477 | ||
176478a8 EFL |
478 | static BOOL WINAPI ctrl_ignore(DWORD type) |
479 | { | |
480 | return TRUE; | |
481 | } | |
482 | ||
483 | #undef fgetc | |
484 | int mingw_fgetc(FILE *stream) | |
485 | { | |
486 | int ch; | |
487 | if (!isatty(_fileno(stream))) | |
488 | return fgetc(stream); | |
489 | ||
490 | SetConsoleCtrlHandler(ctrl_ignore, TRUE); | |
491 | while (1) { | |
492 | ch = fgetc(stream); | |
493 | if (ch != EOF || GetLastError() != ERROR_OPERATION_ABORTED) | |
494 | break; | |
495 | ||
496 | /* Ctrl+C was pressed, simulate SIGINT and retry */ | |
497 | mingw_raise(SIGINT); | |
498 | } | |
499 | SetConsoleCtrlHandler(ctrl_ignore, FALSE); | |
500 | return ch; | |
501 | } | |
502 | ||
3fdcdbdf JS |
503 | #undef fopen |
504 | FILE *mingw_fopen (const char *filename, const char *otype) | |
505 | { | |
f30afdab | 506 | int hide = needs_hiding(filename); |
85faec9d KB |
507 | FILE *file; |
508 | wchar_t wfilename[MAX_PATH], wotype[4]; | |
1a404209 | 509 | if (filename && !strcmp(filename, "/dev/null")) |
3fdcdbdf | 510 | filename = "nul"; |
85faec9d KB |
511 | if (xutftowcs_path(wfilename, filename) < 0 || |
512 | xutftowcs(wotype, otype, ARRAY_SIZE(wotype)) < 0) | |
513 | return NULL; | |
f30afdab JS |
514 | if (hide && !access(filename, F_OK) && set_hidden_flag(wfilename, 0)) { |
515 | error("could not unhide %s", filename); | |
516 | return NULL; | |
517 | } | |
85faec9d | 518 | file = _wfopen(wfilename, wotype); |
e5b31344 JS |
519 | if (!file && GetLastError() == ERROR_INVALID_NAME) |
520 | errno = ENOENT; | |
f30afdab JS |
521 | if (file && hide && set_hidden_flag(wfilename, 1)) |
522 | warning("could not mark '%s' as hidden.", filename); | |
85faec9d | 523 | return file; |
3fdcdbdf JS |
524 | } |
525 | ||
3fdcdbdf JS |
526 | FILE *mingw_freopen (const char *filename, const char *otype, FILE *stream) |
527 | { | |
f30afdab | 528 | int hide = needs_hiding(filename); |
85faec9d KB |
529 | FILE *file; |
530 | wchar_t wfilename[MAX_PATH], wotype[4]; | |
3fdcdbdf JS |
531 | if (filename && !strcmp(filename, "/dev/null")) |
532 | filename = "nul"; | |
85faec9d KB |
533 | if (xutftowcs_path(wfilename, filename) < 0 || |
534 | xutftowcs(wotype, otype, ARRAY_SIZE(wotype)) < 0) | |
535 | return NULL; | |
f30afdab JS |
536 | if (hide && !access(filename, F_OK) && set_hidden_flag(wfilename, 0)) { |
537 | error("could not unhide %s", filename); | |
538 | return NULL; | |
539 | } | |
85faec9d | 540 | file = _wfreopen(wfilename, wotype, stream); |
f30afdab JS |
541 | if (file && hide && set_hidden_flag(wfilename, 1)) |
542 | warning("could not mark '%s' as hidden.", filename); | |
85faec9d | 543 | return file; |
3fdcdbdf JS |
544 | } |
545 | ||
84adb641 JS |
546 | #undef fflush |
547 | int mingw_fflush(FILE *stream) | |
548 | { | |
549 | int ret = fflush(stream); | |
550 | ||
551 | /* | |
552 | * write() is used behind the scenes of stdio output functions. | |
553 | * Since git code does not check for errors after each stdio write | |
554 | * operation, it can happen that write() is called by a later | |
555 | * stdio function even if an earlier write() call failed. In the | |
556 | * case of a pipe whose readable end was closed, only the first | |
557 | * call to write() reports EPIPE on Windows. Subsequent write() | |
558 | * calls report EINVAL. It is impossible to notice whether this | |
559 | * fflush invocation triggered such a case, therefore, we have to | |
560 | * catch all EINVAL errors whole-sale. | |
561 | */ | |
562 | if (ret && errno == EINVAL) | |
563 | errno = EPIPE; | |
564 | ||
565 | return ret; | |
566 | } | |
567 | ||
2b86292e JS |
568 | #undef write |
569 | ssize_t mingw_write(int fd, const void *buf, size_t len) | |
570 | { | |
571 | ssize_t result = write(fd, buf, len); | |
572 | ||
573 | if (result < 0 && errno == EINVAL && buf) { | |
574 | /* check if fd is a pipe */ | |
575 | HANDLE h = (HANDLE) _get_osfhandle(fd); | |
576 | if (GetFileType(h) == FILE_TYPE_PIPE) | |
577 | errno = EPIPE; | |
578 | else | |
579 | errno = EINVAL; | |
580 | } | |
581 | ||
582 | return result; | |
583 | } | |
584 | ||
85faec9d KB |
585 | int mingw_access(const char *filename, int mode) |
586 | { | |
587 | wchar_t wfilename[MAX_PATH]; | |
588 | if (xutftowcs_path(wfilename, filename) < 0) | |
589 | return -1; | |
590 | /* X_OK is not supported by the MSVCRT version */ | |
591 | return _waccess(wfilename, mode & ~X_OK); | |
592 | } | |
593 | ||
594 | int mingw_chdir(const char *dirname) | |
595 | { | |
596 | wchar_t wdirname[MAX_PATH]; | |
597 | if (xutftowcs_path(wdirname, dirname) < 0) | |
598 | return -1; | |
599 | return _wchdir(wdirname); | |
600 | } | |
601 | ||
602 | int mingw_chmod(const char *filename, int mode) | |
603 | { | |
604 | wchar_t wfilename[MAX_PATH]; | |
605 | if (xutftowcs_path(wfilename, filename) < 0) | |
606 | return -1; | |
607 | return _wchmod(wfilename, mode); | |
608 | } | |
609 | ||
a6d15bc3 JS |
610 | /* |
611 | * The unit of FILETIME is 100-nanoseconds since January 1, 1601, UTC. | |
612 | * Returns the 100-nanoseconds ("hekto nanoseconds") since the epoch. | |
613 | */ | |
614 | static inline long long filetime_to_hnsec(const FILETIME *ft) | |
5411bdc4 MSO |
615 | { |
616 | long long winTime = ((long long)ft->dwHighDateTime << 32) + ft->dwLowDateTime; | |
a6d15bc3 JS |
617 | /* Windows to Unix Epoch conversion */ |
618 | return winTime - 116444736000000000LL; | |
619 | } | |
620 | ||
621 | static inline time_t filetime_to_time_t(const FILETIME *ft) | |
622 | { | |
623 | return (time_t)(filetime_to_hnsec(ft) / 10000000); | |
5411bdc4 MSO |
624 | } |
625 | ||
4b0abd5c JS |
626 | /** |
627 | * Verifies that safe_create_leading_directories() would succeed. | |
628 | */ | |
629 | static int has_valid_directory_prefix(wchar_t *wfilename) | |
630 | { | |
631 | int n = wcslen(wfilename); | |
632 | ||
633 | while (n > 0) { | |
634 | wchar_t c = wfilename[--n]; | |
635 | DWORD attributes; | |
636 | ||
637 | if (!is_dir_sep(c)) | |
638 | continue; | |
639 | ||
640 | wfilename[n] = L'\0'; | |
641 | attributes = GetFileAttributesW(wfilename); | |
642 | wfilename[n] = c; | |
643 | if (attributes == FILE_ATTRIBUTE_DIRECTORY || | |
644 | attributes == FILE_ATTRIBUTE_DEVICE) | |
645 | return 1; | |
646 | if (attributes == INVALID_FILE_ATTRIBUTES) | |
647 | switch (GetLastError()) { | |
648 | case ERROR_PATH_NOT_FOUND: | |
649 | continue; | |
650 | case ERROR_FILE_NOT_FOUND: | |
651 | /* This implies parent directory exists. */ | |
652 | return 1; | |
653 | } | |
654 | return 0; | |
655 | } | |
656 | return 1; | |
657 | } | |
658 | ||
5411bdc4 MSO |
659 | /* We keep the do_lstat code in a separate function to avoid recursion. |
660 | * When a path ends with a slash, the stat will fail with ENOENT. In | |
661 | * this case, we strip the trailing slashes and stat again. | |
9b9784ca PT |
662 | * |
663 | * If follow is true then act like stat() and report on the link | |
664 | * target. Otherwise report on the link itself. | |
5411bdc4 | 665 | */ |
9b9784ca | 666 | static int do_lstat(int follow, const char *file_name, struct stat *buf) |
5411bdc4 MSO |
667 | { |
668 | WIN32_FILE_ATTRIBUTE_DATA fdata; | |
85faec9d KB |
669 | wchar_t wfilename[MAX_PATH]; |
670 | if (xutftowcs_path(wfilename, file_name) < 0) | |
671 | return -1; | |
5411bdc4 | 672 | |
85faec9d | 673 | if (GetFileAttributesExW(wfilename, GetFileExInfoStandard, &fdata)) { |
5411bdc4 MSO |
674 | buf->st_ino = 0; |
675 | buf->st_gid = 0; | |
676 | buf->st_uid = 0; | |
180964f0 | 677 | buf->st_nlink = 1; |
444dc903 | 678 | buf->st_mode = file_attr_to_st_mode(fdata.dwFileAttributes); |
1d4e4cd4 JS |
679 | buf->st_size = fdata.nFileSizeLow | |
680 | (((off_t)fdata.nFileSizeHigh)<<32); | |
8252df62 | 681 | buf->st_dev = buf->st_rdev = 0; /* not used by Git */ |
5411bdc4 MSO |
682 | buf->st_atime = filetime_to_time_t(&(fdata.ftLastAccessTime)); |
683 | buf->st_mtime = filetime_to_time_t(&(fdata.ftLastWriteTime)); | |
684 | buf->st_ctime = filetime_to_time_t(&(fdata.ftCreationTime)); | |
9b9784ca | 685 | if (fdata.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) { |
85faec9d KB |
686 | WIN32_FIND_DATAW findbuf; |
687 | HANDLE handle = FindFirstFileW(wfilename, &findbuf); | |
9b9784ca PT |
688 | if (handle != INVALID_HANDLE_VALUE) { |
689 | if ((findbuf.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) && | |
690 | (findbuf.dwReserved0 == IO_REPARSE_TAG_SYMLINK)) { | |
691 | if (follow) { | |
692 | char buffer[MAXIMUM_REPARSE_DATA_BUFFER_SIZE]; | |
693 | buf->st_size = readlink(file_name, buffer, MAXIMUM_REPARSE_DATA_BUFFER_SIZE); | |
694 | } else { | |
695 | buf->st_mode = S_IFLNK; | |
696 | } | |
697 | buf->st_mode |= S_IREAD; | |
698 | if (!(findbuf.dwFileAttributes & FILE_ATTRIBUTE_READONLY)) | |
699 | buf->st_mode |= S_IWRITE; | |
700 | } | |
701 | FindClose(handle); | |
702 | } | |
703 | } | |
5411bdc4 MSO |
704 | return 0; |
705 | } | |
85faec9d KB |
706 | switch (GetLastError()) { |
707 | case ERROR_ACCESS_DENIED: | |
708 | case ERROR_SHARING_VIOLATION: | |
709 | case ERROR_LOCK_VIOLATION: | |
710 | case ERROR_SHARING_BUFFER_EXCEEDED: | |
711 | errno = EACCES; | |
712 | break; | |
713 | case ERROR_BUFFER_OVERFLOW: | |
714 | errno = ENAMETOOLONG; | |
715 | break; | |
716 | case ERROR_NOT_ENOUGH_MEMORY: | |
717 | errno = ENOMEM; | |
718 | break; | |
4b0abd5c JS |
719 | case ERROR_PATH_NOT_FOUND: |
720 | if (!has_valid_directory_prefix(wfilename)) { | |
721 | errno = ENOTDIR; | |
722 | break; | |
723 | } | |
724 | /* fallthru */ | |
85faec9d KB |
725 | default: |
726 | errno = ENOENT; | |
727 | break; | |
728 | } | |
5411bdc4 MSO |
729 | return -1; |
730 | } | |
731 | ||
732 | /* We provide our own lstat/fstat functions, since the provided | |
733 | * lstat/fstat functions are so slow. These stat functions are | |
734 | * tailored for Git's usage (read: fast), and are not meant to be | |
735 | * complete. Note that Git stat()s are redirected to mingw_lstat() | |
736 | * too, since Windows doesn't really handle symlinks that well. | |
737 | */ | |
9b9784ca | 738 | static int do_stat_internal(int follow, const char *file_name, struct stat *buf) |
5411bdc4 MSO |
739 | { |
740 | int namelen; | |
58aa3d2a | 741 | char alt_name[PATH_MAX]; |
5411bdc4 | 742 | |
9b9784ca | 743 | if (!do_lstat(follow, file_name, buf)) |
5411bdc4 MSO |
744 | return 0; |
745 | ||
746 | /* if file_name ended in a '/', Windows returned ENOENT; | |
747 | * try again without trailing slashes | |
748 | */ | |
749 | if (errno != ENOENT) | |
750 | return -1; | |
751 | ||
752 | namelen = strlen(file_name); | |
753 | if (namelen && file_name[namelen-1] != '/') | |
754 | return -1; | |
755 | while (namelen && file_name[namelen-1] == '/') | |
756 | --namelen; | |
757 | if (!namelen || namelen >= PATH_MAX) | |
758 | return -1; | |
759 | ||
760 | memcpy(alt_name, file_name, namelen); | |
761 | alt_name[namelen] = 0; | |
9b9784ca PT |
762 | return do_lstat(follow, alt_name, buf); |
763 | } | |
764 | ||
765 | int mingw_lstat(const char *file_name, struct stat *buf) | |
766 | { | |
767 | return do_stat_internal(0, file_name, buf); | |
768 | } | |
769 | int mingw_stat(const char *file_name, struct stat *buf) | |
770 | { | |
771 | return do_stat_internal(1, file_name, buf); | |
5411bdc4 MSO |
772 | } |
773 | ||
180964f0 | 774 | int mingw_fstat(int fd, struct stat *buf) |
5411bdc4 MSO |
775 | { |
776 | HANDLE fh = (HANDLE)_get_osfhandle(fd); | |
777 | BY_HANDLE_FILE_INFORMATION fdata; | |
778 | ||
779 | if (fh == INVALID_HANDLE_VALUE) { | |
780 | errno = EBADF; | |
781 | return -1; | |
782 | } | |
783 | /* direct non-file handles to MS's fstat() */ | |
180964f0 | 784 | if (GetFileType(fh) != FILE_TYPE_DISK) |
1d4e4cd4 | 785 | return _fstati64(fd, buf); |
5411bdc4 MSO |
786 | |
787 | if (GetFileInformationByHandle(fh, &fdata)) { | |
5411bdc4 MSO |
788 | buf->st_ino = 0; |
789 | buf->st_gid = 0; | |
790 | buf->st_uid = 0; | |
180964f0 | 791 | buf->st_nlink = 1; |
444dc903 | 792 | buf->st_mode = file_attr_to_st_mode(fdata.dwFileAttributes); |
1d4e4cd4 JS |
793 | buf->st_size = fdata.nFileSizeLow | |
794 | (((off_t)fdata.nFileSizeHigh)<<32); | |
8252df62 | 795 | buf->st_dev = buf->st_rdev = 0; /* not used by Git */ |
5411bdc4 MSO |
796 | buf->st_atime = filetime_to_time_t(&(fdata.ftLastAccessTime)); |
797 | buf->st_mtime = filetime_to_time_t(&(fdata.ftLastWriteTime)); | |
798 | buf->st_ctime = filetime_to_time_t(&(fdata.ftCreationTime)); | |
799 | return 0; | |
800 | } | |
801 | errno = EBADF; | |
802 | return -1; | |
803 | } | |
804 | ||
7c0ffa1c JS |
805 | static inline void time_t_to_filetime(time_t t, FILETIME *ft) |
806 | { | |
807 | long long winTime = t * 10000000LL + 116444736000000000LL; | |
808 | ft->dwLowDateTime = winTime; | |
809 | ft->dwHighDateTime = winTime >> 32; | |
810 | } | |
811 | ||
812 | int mingw_utime (const char *file_name, const struct utimbuf *times) | |
813 | { | |
814 | FILETIME mft, aft; | |
815 | int fh, rc; | |
85faec9d KB |
816 | DWORD attrs; |
817 | wchar_t wfilename[MAX_PATH]; | |
818 | if (xutftowcs_path(wfilename, file_name) < 0) | |
819 | return -1; | |
7c0ffa1c JS |
820 | |
821 | /* must have write permission */ | |
85faec9d | 822 | attrs = GetFileAttributesW(wfilename); |
852f098c JS |
823 | if (attrs != INVALID_FILE_ATTRIBUTES && |
824 | (attrs & FILE_ATTRIBUTE_READONLY)) { | |
825 | /* ignore errors here; open() will report them */ | |
85faec9d | 826 | SetFileAttributesW(wfilename, attrs & ~FILE_ATTRIBUTE_READONLY); |
852f098c JS |
827 | } |
828 | ||
85faec9d | 829 | if ((fh = _wopen(wfilename, O_RDWR | O_BINARY)) < 0) { |
852f098c JS |
830 | rc = -1; |
831 | goto revert_attrs; | |
832 | } | |
7c0ffa1c | 833 | |
ded2d476 SG |
834 | if (times) { |
835 | time_t_to_filetime(times->modtime, &mft); | |
836 | time_t_to_filetime(times->actime, &aft); | |
837 | } else { | |
838 | GetSystemTimeAsFileTime(&mft); | |
839 | aft = mft; | |
840 | } | |
7c0ffa1c JS |
841 | if (!SetFileTime((HANDLE)_get_osfhandle(fh), NULL, &aft, &mft)) { |
842 | errno = EINVAL; | |
843 | rc = -1; | |
844 | } else | |
845 | rc = 0; | |
846 | close(fh); | |
852f098c JS |
847 | |
848 | revert_attrs: | |
849 | if (attrs != INVALID_FILE_ATTRIBUTES && | |
850 | (attrs & FILE_ATTRIBUTE_READONLY)) { | |
851 | /* ignore errors again */ | |
85faec9d | 852 | SetFileAttributesW(wfilename, attrs); |
852f098c | 853 | } |
7c0ffa1c JS |
854 | return rc; |
855 | } | |
856 | ||
9ee0540a JS |
857 | #undef strftime |
858 | size_t mingw_strftime(char *s, size_t max, | |
859 | const char *format, const struct tm *tm) | |
860 | { | |
861 | size_t ret = strftime(s, max, format, tm); | |
862 | ||
863 | if (!ret && errno == EINVAL) | |
864 | die("invalid strftime format: '%s'", format); | |
865 | return ret; | |
866 | } | |
867 | ||
f4626df5 JS |
868 | unsigned int sleep (unsigned int seconds) |
869 | { | |
870 | Sleep(seconds*1000); | |
871 | return 0; | |
872 | } | |
873 | ||
85faec9d KB |
874 | char *mingw_mktemp(char *template) |
875 | { | |
876 | wchar_t wtemplate[MAX_PATH]; | |
877 | if (xutftowcs_path(wtemplate, template) < 0) | |
878 | return NULL; | |
879 | if (!_wmktemp(wtemplate)) | |
880 | return NULL; | |
881 | if (xwcstoutf(template, wtemplate, strlen(template) + 1) < 0) | |
882 | return NULL; | |
883 | return template; | |
884 | } | |
885 | ||
f4626df5 JS |
886 | int mkstemp(char *template) |
887 | { | |
888 | char *filename = mktemp(template); | |
889 | if (filename == NULL) | |
890 | return -1; | |
891 | return open(filename, O_RDWR | O_CREAT, 0600); | |
892 | } | |
893 | ||
894 | int gettimeofday(struct timeval *tv, void *tz) | |
895 | { | |
a6d15bc3 JS |
896 | FILETIME ft; |
897 | long long hnsec; | |
898 | ||
899 | GetSystemTimeAsFileTime(&ft); | |
900 | hnsec = filetime_to_hnsec(&ft); | |
901 | tv->tv_sec = hnsec / 10000000; | |
902 | tv->tv_usec = (hnsec % 10000000) / 10; | |
a42a0c2e | 903 | return 0; |
f4626df5 JS |
904 | } |
905 | ||
897bb8cb JS |
906 | int pipe(int filedes[2]) |
907 | { | |
3e34d665 | 908 | HANDLE h[2]; |
897bb8cb | 909 | |
3e34d665 JS |
910 | /* this creates non-inheritable handles */ |
911 | if (!CreatePipe(&h[0], &h[1], NULL, 8192)) { | |
912 | errno = err_win_to_posix(GetLastError()); | |
897bb8cb JS |
913 | return -1; |
914 | } | |
7c00bc39 | 915 | filedes[0] = _open_osfhandle(HCAST(int, h[0]), O_NOINHERIT); |
3e34d665 | 916 | if (filedes[0] < 0) { |
897bb8cb JS |
917 | CloseHandle(h[0]); |
918 | CloseHandle(h[1]); | |
919 | return -1; | |
920 | } | |
7c00bc39 | 921 | filedes[1] = _open_osfhandle(HCAST(int, h[1]), O_NOINHERIT); |
c3cb7b6f | 922 | if (filedes[1] < 0) { |
897bb8cb | 923 | close(filedes[0]); |
897bb8cb JS |
924 | CloseHandle(h[1]); |
925 | return -1; | |
926 | } | |
897bb8cb JS |
927 | return 0; |
928 | } | |
929 | ||
f4626df5 JS |
930 | struct tm *gmtime_r(const time_t *timep, struct tm *result) |
931 | { | |
932 | /* gmtime() in MSVCRT.DLL is thread-safe, but not reentrant */ | |
933 | memcpy(result, gmtime(timep), sizeof(struct tm)); | |
934 | return result; | |
935 | } | |
936 | ||
937 | struct tm *localtime_r(const time_t *timep, struct tm *result) | |
938 | { | |
939 | /* localtime() in MSVCRT.DLL is thread-safe, but not reentrant */ | |
940 | memcpy(result, localtime(timep), sizeof(struct tm)); | |
941 | return result; | |
942 | } | |
943 | ||
25fe217b JS |
944 | char *mingw_getcwd(char *pointer, int len) |
945 | { | |
937974fc JS |
946 | wchar_t cwd[MAX_PATH], wpointer[MAX_PATH]; |
947 | DWORD ret = GetCurrentDirectoryW(ARRAY_SIZE(cwd), cwd); | |
948 | ||
949 | if (!ret || ret >= ARRAY_SIZE(cwd)) { | |
950 | errno = ret ? ENAMETOOLONG : err_win_to_posix(GetLastError()); | |
951 | return NULL; | |
952 | } | |
953 | ret = GetLongPathNameW(cwd, wpointer, ARRAY_SIZE(wpointer)); | |
4745feeb AS |
954 | if (!ret && GetLastError() == ERROR_ACCESS_DENIED) { |
955 | HANDLE hnd = CreateFileW(cwd, 0, | |
956 | FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, NULL, | |
957 | OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL); | |
958 | if (hnd == INVALID_HANDLE_VALUE) | |
959 | return NULL; | |
960 | ret = GetFinalPathNameByHandleW(hnd, wpointer, ARRAY_SIZE(wpointer), 0); | |
961 | CloseHandle(hnd); | |
962 | if (!ret || ret >= ARRAY_SIZE(wpointer)) | |
963 | return NULL; | |
964 | if (xwcstoutf(pointer, normalize_ntpath(wpointer), len) < 0) | |
965 | return NULL; | |
966 | return pointer; | |
967 | } | |
937974fc | 968 | if (!ret || ret >= ARRAY_SIZE(wpointer)) |
85faec9d KB |
969 | return NULL; |
970 | if (xwcstoutf(pointer, wpointer, len) < 0) | |
971 | return NULL; | |
8e9b2080 | 972 | convert_slashes(pointer); |
85faec9d | 973 | return pointer; |
25fe217b JS |
974 | } |
975 | ||
7e5d7768 JS |
976 | /* |
977 | * See http://msdn2.microsoft.com/en-us/library/17w5ykft(vs.71).aspx | |
978 | * (Parsing C++ Command-Line Arguments) | |
979 | */ | |
980 | static const char *quote_arg(const char *arg) | |
981 | { | |
982 | /* count chars to quote */ | |
983 | int len = 0, n = 0; | |
984 | int force_quotes = 0; | |
985 | char *q, *d; | |
986 | const char *p = arg; | |
987 | if (!*p) force_quotes = 1; | |
988 | while (*p) { | |
3aea1a5a | 989 | if (isspace(*p) || *p == '*' || *p == '?' || *p == '{' || *p == '\'') |
7e5d7768 JS |
990 | force_quotes = 1; |
991 | else if (*p == '"') | |
992 | n++; | |
993 | else if (*p == '\\') { | |
994 | int count = 0; | |
995 | while (*p == '\\') { | |
996 | count++; | |
997 | p++; | |
998 | len++; | |
999 | } | |
1000 | if (*p == '"') | |
1001 | n += count*2 + 1; | |
1002 | continue; | |
1003 | } | |
1004 | len++; | |
1005 | p++; | |
1006 | } | |
1007 | if (!force_quotes && n == 0) | |
1008 | return arg; | |
1009 | ||
1010 | /* insert \ where necessary */ | |
50a6c8ef | 1011 | d = q = xmalloc(st_add3(len, n, 3)); |
7e5d7768 JS |
1012 | *d++ = '"'; |
1013 | while (*arg) { | |
1014 | if (*arg == '"') | |
1015 | *d++ = '\\'; | |
1016 | else if (*arg == '\\') { | |
1017 | int count = 0; | |
1018 | while (*arg == '\\') { | |
1019 | count++; | |
1020 | *d++ = *arg++; | |
1021 | } | |
1022 | if (*arg == '"') { | |
1023 | while (count-- > 0) | |
1024 | *d++ = '\\'; | |
1025 | *d++ = '\\'; | |
1026 | } | |
1027 | } | |
1028 | *d++ = *arg++; | |
1029 | } | |
1030 | *d++ = '"'; | |
1031 | *d++ = 0; | |
1032 | return q; | |
1033 | } | |
1034 | ||
f1a4dfb8 JS |
1035 | static const char *parse_interpreter(const char *cmd) |
1036 | { | |
1037 | static char buf[100]; | |
1038 | char *p, *opt; | |
1039 | int n, fd; | |
1040 | ||
1041 | /* don't even try a .exe */ | |
1042 | n = strlen(cmd); | |
1043 | if (n >= 4 && !strcasecmp(cmd+n-4, ".exe")) | |
1044 | return NULL; | |
1045 | ||
1046 | fd = open(cmd, O_RDONLY); | |
1047 | if (fd < 0) | |
1048 | return NULL; | |
1049 | n = read(fd, buf, sizeof(buf)-1); | |
1050 | close(fd); | |
1051 | if (n < 4) /* at least '#!/x' and not error */ | |
1052 | return NULL; | |
1053 | ||
1054 | if (buf[0] != '#' || buf[1] != '!') | |
1055 | return NULL; | |
1056 | buf[n] = '\0'; | |
bedc4279 PH |
1057 | p = buf + strcspn(buf, "\r\n"); |
1058 | if (!*p) | |
f1a4dfb8 JS |
1059 | return NULL; |
1060 | ||
1061 | *p = '\0'; | |
1062 | if (!(p = strrchr(buf+2, '/')) && !(p = strrchr(buf+2, '\\'))) | |
1063 | return NULL; | |
1064 | /* strip options */ | |
1065 | if ((opt = strchr(p+1, ' '))) | |
1066 | *opt = '\0'; | |
1067 | return p+1; | |
1068 | } | |
1069 | ||
f1a4dfb8 JS |
1070 | /* |
1071 | * exe_only means that we only want to detect .exe files, but not scripts | |
1072 | * (which do not have an extension) | |
1073 | */ | |
e0ca1ca2 RS |
1074 | static char *lookup_prog(const char *dir, int dirlen, const char *cmd, |
1075 | int isexe, int exe_only) | |
f1a4dfb8 JS |
1076 | { |
1077 | char path[MAX_PATH]; | |
e0ca1ca2 | 1078 | snprintf(path, sizeof(path), "%.*s\\%s.exe", dirlen, dir, cmd); |
f1a4dfb8 JS |
1079 | |
1080 | if (!isexe && access(path, F_OK) == 0) | |
1081 | return xstrdup(path); | |
1082 | path[strlen(path)-4] = '\0'; | |
1083 | if ((!exe_only || isexe) && access(path, F_OK) == 0) | |
fe77b695 ER |
1084 | if (!(GetFileAttributes(path) & FILE_ATTRIBUTE_DIRECTORY)) |
1085 | return xstrdup(path); | |
f1a4dfb8 JS |
1086 | return NULL; |
1087 | } | |
1088 | ||
1089 | /* | |
22e5e58a | 1090 | * Determines the absolute path of cmd using the split path in path. |
f1a4dfb8 JS |
1091 | * If cmd contains a slash or backslash, no lookup is performed. |
1092 | */ | |
e0ca1ca2 | 1093 | static char *path_lookup(const char *cmd, int exe_only) |
f1a4dfb8 | 1094 | { |
e0ca1ca2 | 1095 | const char *path; |
f1a4dfb8 JS |
1096 | char *prog = NULL; |
1097 | int len = strlen(cmd); | |
1098 | int isexe = len >= 4 && !strcasecmp(cmd+len-4, ".exe"); | |
1099 | ||
1100 | if (strchr(cmd, '/') || strchr(cmd, '\\')) | |
e0ca1ca2 RS |
1101 | return xstrdup(cmd); |
1102 | ||
1103 | path = mingw_getenv("PATH"); | |
1104 | if (!path) | |
1105 | return NULL; | |
f1a4dfb8 | 1106 | |
e0ca1ca2 RS |
1107 | while (!prog) { |
1108 | const char *sep = strchrnul(path, ';'); | |
1109 | int dirlen = sep - path; | |
1110 | if (dirlen) | |
1111 | prog = lookup_prog(path, dirlen, cmd, isexe, exe_only); | |
1112 | if (!*sep) | |
1113 | break; | |
1114 | path = sep + 1; | |
1115 | } | |
f1a4dfb8 JS |
1116 | |
1117 | return prog; | |
1118 | } | |
1119 | ||
f279242d KB |
1120 | static int do_putenv(char **env, const char *name, int size, int free_old); |
1121 | ||
1122 | /* used number of elements of environ array, including terminating NULL */ | |
1123 | static int environ_size = 0; | |
1124 | /* allocated size of environ array, in bytes */ | |
1125 | static int environ_alloc = 0; | |
77734da2 | 1126 | |
df0e998c | 1127 | /* |
77734da2 KB |
1128 | * Create environment block suitable for CreateProcess. Merges current |
1129 | * process environment and the supplied environment changes. | |
df0e998c | 1130 | */ |
77734da2 | 1131 | static wchar_t *make_environment_block(char **deltaenv) |
7e5d7768 | 1132 | { |
df0e998c | 1133 | wchar_t *wenvblk = NULL; |
f279242d KB |
1134 | char **tmpenv; |
1135 | int i = 0, size = environ_size, wenvsz = 0, wenvpos = 0; | |
df0e998c | 1136 | |
f279242d KB |
1137 | while (deltaenv && deltaenv[i]) |
1138 | i++; | |
df0e998c | 1139 | |
f279242d | 1140 | /* copy the environment, leaving space for changes */ |
b32fa95f | 1141 | ALLOC_ARRAY(tmpenv, size + i); |
f279242d | 1142 | memcpy(tmpenv, environ, size * sizeof(char*)); |
77734da2 KB |
1143 | |
1144 | /* merge supplied environment changes into the temporary environment */ | |
f279242d KB |
1145 | for (i = 0; deltaenv && deltaenv[i]; i++) |
1146 | size = do_putenv(tmpenv, deltaenv[i], size, 0); | |
77734da2 | 1147 | |
df0e998c | 1148 | /* create environment block from temporary environment */ |
f279242d KB |
1149 | for (i = 0; tmpenv[i]; i++) { |
1150 | size = 2 * strlen(tmpenv[i]) + 2; /* +2 for final \0 */ | |
df0e998c | 1151 | ALLOC_GROW(wenvblk, (wenvpos + size) * sizeof(wchar_t), wenvsz); |
f279242d | 1152 | wenvpos += xutftowcs(&wenvblk[wenvpos], tmpenv[i], size) + 1; |
df0e998c KB |
1153 | } |
1154 | /* add final \0 terminator */ | |
1155 | wenvblk[wenvpos] = 0; | |
1156 | free(tmpenv); | |
1157 | return wenvblk; | |
7e5d7768 JS |
1158 | } |
1159 | ||
52de4db5 EFL |
1160 | struct pinfo_t { |
1161 | struct pinfo_t *next; | |
1162 | pid_t pid; | |
1163 | HANDLE proc; | |
657b35f4 RJ |
1164 | }; |
1165 | static struct pinfo_t *pinfo = NULL; | |
52de4db5 EFL |
1166 | CRITICAL_SECTION pinfo_cs; |
1167 | ||
77734da2 | 1168 | static pid_t mingw_spawnve_fd(const char *cmd, const char **argv, char **deltaenv, |
f9a2743c | 1169 | const char *dir, |
75301f90 | 1170 | int prepend_cmd, int fhin, int fhout, int fherr) |
7e5d7768 | 1171 | { |
99c3c76d | 1172 | STARTUPINFOW si; |
7e5d7768 | 1173 | PROCESS_INFORMATION pi; |
7eb2619c KB |
1174 | struct strbuf args; |
1175 | wchar_t wcmd[MAX_PATH], wdir[MAX_PATH], *wargs, *wenvblk = NULL; | |
1176 | unsigned flags = CREATE_UNICODE_ENVIRONMENT; | |
7e5d7768 JS |
1177 | BOOL ret; |
1178 | ||
1179 | /* Determine whether or not we are associated to a console */ | |
1180 | HANDLE cons = CreateFile("CONOUT$", GENERIC_WRITE, | |
1181 | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, | |
1182 | FILE_ATTRIBUTE_NORMAL, NULL); | |
1183 | if (cons == INVALID_HANDLE_VALUE) { | |
1184 | /* There is no console associated with this process. | |
1185 | * Since the child is a console process, Windows | |
1186 | * would normally create a console window. But | |
1187 | * since we'll be redirecting std streams, we do | |
1188 | * not need the console. | |
19fb896f AG |
1189 | * It is necessary to use DETACHED_PROCESS |
1190 | * instead of CREATE_NO_WINDOW to make ssh | |
1191 | * recognize that it has no console. | |
7e5d7768 | 1192 | */ |
7eb2619c | 1193 | flags |= DETACHED_PROCESS; |
7e5d7768 JS |
1194 | } else { |
1195 | /* There is already a console. If we specified | |
19fb896f | 1196 | * DETACHED_PROCESS here, too, Windows would |
7e5d7768 | 1197 | * disassociate the child from the console. |
19fb896f | 1198 | * The same is true for CREATE_NO_WINDOW. |
7e5d7768 JS |
1199 | * Go figure! |
1200 | */ | |
7e5d7768 JS |
1201 | CloseHandle(cons); |
1202 | } | |
1203 | memset(&si, 0, sizeof(si)); | |
1204 | si.cb = sizeof(si); | |
1205 | si.dwFlags = STARTF_USESTDHANDLES; | |
eac14f89 KB |
1206 | si.hStdInput = winansi_get_osfhandle(fhin); |
1207 | si.hStdOutput = winansi_get_osfhandle(fhout); | |
1208 | si.hStdError = winansi_get_osfhandle(fherr); | |
7e5d7768 | 1209 | |
99c3c76d KB |
1210 | if (xutftowcs_path(wcmd, cmd) < 0) |
1211 | return -1; | |
1212 | if (dir && xutftowcs_path(wdir, dir) < 0) | |
1213 | return -1; | |
1214 | ||
7e5d7768 JS |
1215 | /* concatenate argv, quoting args as we go */ |
1216 | strbuf_init(&args, 0); | |
1217 | if (prepend_cmd) { | |
1218 | char *quoted = (char *)quote_arg(cmd); | |
1219 | strbuf_addstr(&args, quoted); | |
1220 | if (quoted != cmd) | |
1221 | free(quoted); | |
1222 | } | |
1223 | for (; *argv; argv++) { | |
1224 | char *quoted = (char *)quote_arg(*argv); | |
1225 | if (*args.buf) | |
1226 | strbuf_addch(&args, ' '); | |
1227 | strbuf_addstr(&args, quoted); | |
1228 | if (quoted != *argv) | |
1229 | free(quoted); | |
1230 | } | |
1231 | ||
8d5b3325 | 1232 | ALLOC_ARRAY(wargs, st_add(st_mult(2, args.len), 1)); |
99c3c76d KB |
1233 | xutftowcs(wargs, args.buf, 2 * args.len + 1); |
1234 | strbuf_release(&args); | |
1235 | ||
77734da2 | 1236 | wenvblk = make_environment_block(deltaenv); |
7e5d7768 JS |
1237 | |
1238 | memset(&pi, 0, sizeof(pi)); | |
99c3c76d | 1239 | ret = CreateProcessW(wcmd, wargs, NULL, NULL, TRUE, flags, |
7eb2619c | 1240 | wenvblk, dir ? wdir : NULL, &si, &pi); |
7e5d7768 | 1241 | |
7eb2619c | 1242 | free(wenvblk); |
99c3c76d | 1243 | free(wargs); |
7e5d7768 JS |
1244 | |
1245 | if (!ret) { | |
1246 | errno = ENOENT; | |
1247 | return -1; | |
1248 | } | |
1249 | CloseHandle(pi.hThread); | |
52de4db5 EFL |
1250 | |
1251 | /* | |
1252 | * The process ID is the human-readable identifier of the process | |
1253 | * that we want to present in log and error messages. The handle | |
1254 | * is not useful for this purpose. But we cannot close it, either, | |
1255 | * because it is not possible to turn a process ID into a process | |
1256 | * handle after the process terminated. | |
1257 | * Keep the handle in a list for waitpid. | |
1258 | */ | |
1259 | EnterCriticalSection(&pinfo_cs); | |
1260 | { | |
1261 | struct pinfo_t *info = xmalloc(sizeof(struct pinfo_t)); | |
1262 | info->pid = pi.dwProcessId; | |
1263 | info->proc = pi.hProcess; | |
1264 | info->next = pinfo; | |
1265 | pinfo = info; | |
1266 | } | |
1267 | LeaveCriticalSection(&pinfo_cs); | |
1268 | ||
1269 | return (pid_t)pi.dwProcessId; | |
7e5d7768 JS |
1270 | } |
1271 | ||
3e66e47b | 1272 | static pid_t mingw_spawnv(const char *cmd, const char **argv, int prepend_cmd) |
75301f90 | 1273 | { |
77734da2 | 1274 | return mingw_spawnve_fd(cmd, argv, NULL, NULL, prepend_cmd, 0, 1, 2); |
75301f90 JS |
1275 | } |
1276 | ||
77734da2 | 1277 | pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **deltaenv, |
f9a2743c | 1278 | const char *dir, |
75301f90 | 1279 | int fhin, int fhout, int fherr) |
7e5d7768 JS |
1280 | { |
1281 | pid_t pid; | |
e0ca1ca2 | 1282 | char *prog = path_lookup(cmd, 0); |
7e5d7768 JS |
1283 | |
1284 | if (!prog) { | |
1285 | errno = ENOENT; | |
1286 | pid = -1; | |
1287 | } | |
1288 | else { | |
1289 | const char *interpr = parse_interpreter(prog); | |
1290 | ||
1291 | if (interpr) { | |
1292 | const char *argv0 = argv[0]; | |
e0ca1ca2 | 1293 | char *iprog = path_lookup(interpr, 1); |
7e5d7768 JS |
1294 | argv[0] = prog; |
1295 | if (!iprog) { | |
1296 | errno = ENOENT; | |
1297 | pid = -1; | |
1298 | } | |
1299 | else { | |
77734da2 | 1300 | pid = mingw_spawnve_fd(iprog, argv, deltaenv, dir, 1, |
75301f90 | 1301 | fhin, fhout, fherr); |
7e5d7768 JS |
1302 | free(iprog); |
1303 | } | |
1304 | argv[0] = argv0; | |
1305 | } | |
1306 | else | |
77734da2 | 1307 | pid = mingw_spawnve_fd(prog, argv, deltaenv, dir, 0, |
75301f90 | 1308 | fhin, fhout, fherr); |
7e5d7768 JS |
1309 | free(prog); |
1310 | } | |
7e5d7768 JS |
1311 | return pid; |
1312 | } | |
1313 | ||
3e66e47b | 1314 | static int try_shell_exec(const char *cmd, char *const *argv) |
f1a4dfb8 JS |
1315 | { |
1316 | const char *interpr = parse_interpreter(cmd); | |
f1a4dfb8 JS |
1317 | char *prog; |
1318 | int pid = 0; | |
1319 | ||
1320 | if (!interpr) | |
1321 | return 0; | |
e0ca1ca2 | 1322 | prog = path_lookup(interpr, 1); |
f1a4dfb8 JS |
1323 | if (prog) { |
1324 | int argc = 0; | |
1325 | const char **argv2; | |
1326 | while (argv[argc]) argc++; | |
b32fa95f | 1327 | ALLOC_ARRAY(argv2, argc + 1); |
7e5d7768 JS |
1328 | argv2[0] = (char *)cmd; /* full path to the script file */ |
1329 | memcpy(&argv2[1], &argv[1], sizeof(*argv) * argc); | |
3e66e47b | 1330 | pid = mingw_spawnv(prog, argv2, 1); |
f1a4dfb8 JS |
1331 | if (pid >= 0) { |
1332 | int status; | |
1333 | if (waitpid(pid, &status, 0) < 0) | |
1334 | status = 255; | |
1335 | exit(status); | |
1336 | } | |
1337 | pid = 1; /* indicate that we tried but failed */ | |
1338 | free(prog); | |
1339 | free(argv2); | |
1340 | } | |
f1a4dfb8 JS |
1341 | return pid; |
1342 | } | |
1343 | ||
3e66e47b | 1344 | int mingw_execv(const char *cmd, char *const *argv) |
f1a4dfb8 JS |
1345 | { |
1346 | /* check if git_command is a shell script */ | |
3e66e47b | 1347 | if (!try_shell_exec(cmd, argv)) { |
f1a4dfb8 JS |
1348 | int pid, status; |
1349 | ||
3e66e47b | 1350 | pid = mingw_spawnv(cmd, (const char **)argv, 0); |
f1a4dfb8 | 1351 | if (pid < 0) |
570f1e6e | 1352 | return -1; |
f1a4dfb8 JS |
1353 | if (waitpid(pid, &status, 0) < 0) |
1354 | status = 255; | |
1355 | exit(status); | |
1356 | } | |
570f1e6e | 1357 | return -1; |
f1a4dfb8 JS |
1358 | } |
1359 | ||
1696d723 | 1360 | int mingw_execvp(const char *cmd, char *const *argv) |
f1a4dfb8 | 1361 | { |
e0ca1ca2 | 1362 | char *prog = path_lookup(cmd, 0); |
f1a4dfb8 JS |
1363 | |
1364 | if (prog) { | |
3e66e47b | 1365 | mingw_execv(prog, argv); |
f1a4dfb8 JS |
1366 | free(prog); |
1367 | } else | |
1368 | errno = ENOENT; | |
1369 | ||
1696d723 | 1370 | return -1; |
f1a4dfb8 JS |
1371 | } |
1372 | ||
82fc07b7 EFL |
1373 | int mingw_kill(pid_t pid, int sig) |
1374 | { | |
1375 | if (pid > 0 && sig == SIGTERM) { | |
1376 | HANDLE h = OpenProcess(PROCESS_TERMINATE, FALSE, pid); | |
1377 | ||
1378 | if (TerminateProcess(h, -1)) { | |
1379 | CloseHandle(h); | |
1380 | return 0; | |
1381 | } | |
1382 | ||
1383 | errno = err_win_to_posix(GetLastError()); | |
1384 | CloseHandle(h); | |
1385 | return -1; | |
64a99eb4 NTND |
1386 | } else if (pid > 0 && sig == 0) { |
1387 | HANDLE h = OpenProcess(PROCESS_QUERY_INFORMATION, FALSE, pid); | |
1388 | if (h) { | |
1389 | CloseHandle(h); | |
1390 | return 0; | |
1391 | } | |
82fc07b7 EFL |
1392 | } |
1393 | ||
1394 | errno = EINVAL; | |
1395 | return -1; | |
1396 | } | |
1397 | ||
343ff06d KB |
1398 | /* |
1399 | * Compare environment entries by key (i.e. stopping at '=' or '\0'). | |
1400 | */ | |
1401 | static int compareenv(const void *v1, const void *v2) | |
1402 | { | |
1403 | const char *e1 = *(const char**)v1; | |
1404 | const char *e2 = *(const char**)v2; | |
1405 | ||
1406 | for (;;) { | |
1407 | int c1 = *e1++; | |
1408 | int c2 = *e2++; | |
1409 | c1 = (c1 == '=') ? 0 : tolower(c1); | |
1410 | c2 = (c2 == '=') ? 0 : tolower(c2); | |
1411 | if (c1 > c2) | |
1412 | return 1; | |
1413 | if (c1 < c2) | |
1414 | return -1; | |
1415 | if (c1 == 0) | |
1416 | return 0; | |
1417 | } | |
ba26f296 JS |
1418 | } |
1419 | ||
343ff06d | 1420 | static int bsearchenv(char **env, const char *name, size_t size) |
ba26f296 | 1421 | { |
343ff06d KB |
1422 | unsigned low = 0, high = size; |
1423 | while (low < high) { | |
1424 | unsigned mid = low + ((high - low) >> 1); | |
1425 | int cmp = compareenv(&env[mid], &name); | |
1426 | if (cmp < 0) | |
1427 | low = mid + 1; | |
1428 | else if (cmp > 0) | |
1429 | high = mid; | |
1430 | else | |
1431 | return mid; | |
ba26f296 | 1432 | } |
343ff06d | 1433 | return ~low; /* not found, return 1's complement of insert position */ |
ba26f296 JS |
1434 | } |
1435 | ||
1436 | /* | |
1437 | * If name contains '=', then sets the variable, otherwise it unsets it | |
f279242d KB |
1438 | * Size includes the terminating NULL. Env must have room for size + 1 entries |
1439 | * (in case of insert). Returns the new size. Optionally frees removed entries. | |
ba26f296 | 1440 | */ |
f279242d | 1441 | static int do_putenv(char **env, const char *name, int size, int free_old) |
ba26f296 | 1442 | { |
343ff06d | 1443 | int i = bsearchenv(env, name, size - 1); |
ba26f296 | 1444 | |
343ff06d KB |
1445 | /* optionally free removed / replaced entry */ |
1446 | if (i >= 0 && free_old) | |
ba26f296 | 1447 | free(env[i]); |
ba26f296 | 1448 | |
343ff06d KB |
1449 | if (strchr(name, '=')) { |
1450 | /* if new value ('key=value') is specified, insert or replace entry */ | |
1451 | if (i < 0) { | |
1452 | i = ~i; | |
1453 | memmove(&env[i + 1], &env[i], (size - i) * sizeof(char*)); | |
f279242d | 1454 | size++; |
ba26f296 | 1455 | } |
343ff06d KB |
1456 | env[i] = (char*) name; |
1457 | } else if (i >= 0) { | |
1458 | /* otherwise ('key') remove existing entry */ | |
1459 | size--; | |
1460 | memmove(&env[i], &env[i + 1], (size - i) * sizeof(char*)); | |
ba26f296 | 1461 | } |
f279242d | 1462 | return size; |
2affea41 JS |
1463 | } |
1464 | ||
6dc71543 | 1465 | char *mingw_getenv(const char *name) |
df599e96 | 1466 | { |
343ff06d KB |
1467 | char *value; |
1468 | int pos = bsearchenv(environ, name, environ_size - 1); | |
1469 | if (pos < 0) | |
1470 | return NULL; | |
1471 | value = strchr(environ[pos], '='); | |
1472 | return value ? &value[1] : NULL; | |
df599e96 JS |
1473 | } |
1474 | ||
b729f98f | 1475 | int mingw_putenv(const char *namevalue) |
06bc4b79 | 1476 | { |
f279242d KB |
1477 | ALLOC_GROW(environ, (environ_size + 1) * sizeof(char*), environ_alloc); |
1478 | environ_size = do_putenv(environ, namevalue, environ_size, 1); | |
b729f98f | 1479 | return 0; |
06bc4b79 JS |
1480 | } |
1481 | ||
fe3b2b7b MS |
1482 | /* |
1483 | * Note, this isn't a complete replacement for getaddrinfo. It assumes | |
0353a0c4 | 1484 | * that service contains a numerical port, or that it is null. It |
fe3b2b7b MS |
1485 | * does a simple search using gethostbyname, and returns one IPv4 host |
1486 | * if one was found. | |
1487 | */ | |
1488 | static int WSAAPI getaddrinfo_stub(const char *node, const char *service, | |
1489 | const struct addrinfo *hints, | |
1490 | struct addrinfo **res) | |
1491 | { | |
cbefd2d6 | 1492 | struct hostent *h = NULL; |
fe3b2b7b MS |
1493 | struct addrinfo *ai; |
1494 | struct sockaddr_in *sin; | |
1495 | ||
cbefd2d6 MS |
1496 | if (node) { |
1497 | h = gethostbyname(node); | |
1498 | if (!h) | |
1499 | return WSAGetLastError(); | |
1500 | } | |
fe3b2b7b MS |
1501 | |
1502 | ai = xmalloc(sizeof(struct addrinfo)); | |
1503 | *res = ai; | |
1504 | ai->ai_flags = 0; | |
1505 | ai->ai_family = AF_INET; | |
cbefd2d6 MS |
1506 | ai->ai_socktype = hints ? hints->ai_socktype : 0; |
1507 | switch (ai->ai_socktype) { | |
fe3b2b7b MS |
1508 | case SOCK_STREAM: |
1509 | ai->ai_protocol = IPPROTO_TCP; | |
1510 | break; | |
1511 | case SOCK_DGRAM: | |
1512 | ai->ai_protocol = IPPROTO_UDP; | |
1513 | break; | |
1514 | default: | |
1515 | ai->ai_protocol = 0; | |
1516 | break; | |
1517 | } | |
1518 | ai->ai_addrlen = sizeof(struct sockaddr_in); | |
cbefd2d6 | 1519 | if (hints && (hints->ai_flags & AI_CANONNAME)) |
040a6551 | 1520 | ai->ai_canonname = h ? xstrdup(h->h_name) : NULL; |
cbefd2d6 MS |
1521 | else |
1522 | ai->ai_canonname = NULL; | |
fe3b2b7b | 1523 | |
51a60f5b | 1524 | sin = xcalloc(1, ai->ai_addrlen); |
fe3b2b7b | 1525 | sin->sin_family = AF_INET; |
cbefd2d6 MS |
1526 | /* Note: getaddrinfo is supposed to allow service to be a string, |
1527 | * which should be looked up using getservbyname. This is | |
1528 | * currently not implemented */ | |
fe3b2b7b MS |
1529 | if (service) |
1530 | sin->sin_port = htons(atoi(service)); | |
cbefd2d6 MS |
1531 | if (h) |
1532 | sin->sin_addr = *(struct in_addr *)h->h_addr; | |
1533 | else if (hints && (hints->ai_flags & AI_PASSIVE)) | |
1534 | sin->sin_addr.s_addr = INADDR_ANY; | |
1535 | else | |
1536 | sin->sin_addr.s_addr = INADDR_LOOPBACK; | |
fe3b2b7b | 1537 | ai->ai_addr = (struct sockaddr *)sin; |
657b35f4 | 1538 | ai->ai_next = NULL; |
fe3b2b7b MS |
1539 | return 0; |
1540 | } | |
1541 | ||
1542 | static void WSAAPI freeaddrinfo_stub(struct addrinfo *res) | |
1543 | { | |
1544 | free(res->ai_canonname); | |
1545 | free(res->ai_addr); | |
1546 | free(res); | |
1547 | } | |
1548 | ||
1549 | static int WSAAPI getnameinfo_stub(const struct sockaddr *sa, socklen_t salen, | |
1550 | char *host, DWORD hostlen, | |
1551 | char *serv, DWORD servlen, int flags) | |
1552 | { | |
1553 | const struct sockaddr_in *sin = (const struct sockaddr_in *)sa; | |
1554 | if (sa->sa_family != AF_INET) | |
1555 | return EAI_FAMILY; | |
1556 | if (!host && !serv) | |
1557 | return EAI_NONAME; | |
1558 | ||
1559 | if (host && hostlen > 0) { | |
1560 | struct hostent *ent = NULL; | |
1561 | if (!(flags & NI_NUMERICHOST)) | |
1562 | ent = gethostbyaddr((const char *)&sin->sin_addr, | |
1563 | sizeof(sin->sin_addr), AF_INET); | |
1564 | ||
1565 | if (ent) | |
1566 | snprintf(host, hostlen, "%s", ent->h_name); | |
1567 | else if (flags & NI_NAMEREQD) | |
1568 | return EAI_NONAME; | |
1569 | else | |
1570 | snprintf(host, hostlen, "%s", inet_ntoa(sin->sin_addr)); | |
1571 | } | |
1572 | ||
1573 | if (serv && servlen > 0) { | |
1574 | struct servent *ent = NULL; | |
1575 | if (!(flags & NI_NUMERICSERV)) | |
1576 | ent = getservbyport(sin->sin_port, | |
1577 | flags & NI_DGRAM ? "udp" : "tcp"); | |
1578 | ||
1579 | if (ent) | |
1580 | snprintf(serv, servlen, "%s", ent->s_name); | |
1581 | else | |
1582 | snprintf(serv, servlen, "%d", ntohs(sin->sin_port)); | |
1583 | } | |
1584 | ||
1585 | return 0; | |
1586 | } | |
1587 | ||
1588 | static HMODULE ipv6_dll = NULL; | |
1589 | static void (WSAAPI *ipv6_freeaddrinfo)(struct addrinfo *res); | |
1590 | static int (WSAAPI *ipv6_getaddrinfo)(const char *node, const char *service, | |
1591 | const struct addrinfo *hints, | |
1592 | struct addrinfo **res); | |
1593 | static int (WSAAPI *ipv6_getnameinfo)(const struct sockaddr *sa, socklen_t salen, | |
1594 | char *host, DWORD hostlen, | |
1595 | char *serv, DWORD servlen, int flags); | |
1596 | /* | |
1597 | * gai_strerror is an inline function in the ws2tcpip.h header, so we | |
1598 | * don't need to try to load that one dynamically. | |
1599 | */ | |
1600 | ||
1601 | static void socket_cleanup(void) | |
1602 | { | |
1603 | WSACleanup(); | |
1604 | if (ipv6_dll) | |
1605 | FreeLibrary(ipv6_dll); | |
1606 | ipv6_dll = NULL; | |
1607 | ipv6_freeaddrinfo = freeaddrinfo_stub; | |
1608 | ipv6_getaddrinfo = getaddrinfo_stub; | |
1609 | ipv6_getnameinfo = getnameinfo_stub; | |
1610 | } | |
1611 | ||
b7cc9f82 | 1612 | static void ensure_socket_initialization(void) |
746fb857 JS |
1613 | { |
1614 | WSADATA wsa; | |
b7cc9f82 | 1615 | static int initialized = 0; |
fe3b2b7b MS |
1616 | const char *libraries[] = { "ws2_32.dll", "wship6.dll", NULL }; |
1617 | const char **name; | |
b7cc9f82 MS |
1618 | |
1619 | if (initialized) | |
1620 | return; | |
746fb857 JS |
1621 | |
1622 | if (WSAStartup(MAKEWORD(2,2), &wsa)) | |
1623 | die("unable to initialize winsock subsystem, error %d", | |
1624 | WSAGetLastError()); | |
fe3b2b7b MS |
1625 | |
1626 | for (name = libraries; *name; name++) { | |
c6f050a4 JS |
1627 | ipv6_dll = LoadLibraryExA(*name, NULL, |
1628 | LOAD_LIBRARY_SEARCH_SYSTEM32); | |
fe3b2b7b MS |
1629 | if (!ipv6_dll) |
1630 | continue; | |
1631 | ||
1632 | ipv6_freeaddrinfo = (void (WSAAPI *)(struct addrinfo *)) | |
1633 | GetProcAddress(ipv6_dll, "freeaddrinfo"); | |
1634 | ipv6_getaddrinfo = (int (WSAAPI *)(const char *, const char *, | |
1635 | const struct addrinfo *, | |
1636 | struct addrinfo **)) | |
1637 | GetProcAddress(ipv6_dll, "getaddrinfo"); | |
1638 | ipv6_getnameinfo = (int (WSAAPI *)(const struct sockaddr *, | |
1639 | socklen_t, char *, DWORD, | |
1640 | char *, DWORD, int)) | |
1641 | GetProcAddress(ipv6_dll, "getnameinfo"); | |
1642 | if (!ipv6_freeaddrinfo || !ipv6_getaddrinfo || !ipv6_getnameinfo) { | |
1643 | FreeLibrary(ipv6_dll); | |
1644 | ipv6_dll = NULL; | |
1645 | } else | |
1646 | break; | |
1647 | } | |
1648 | if (!ipv6_freeaddrinfo || !ipv6_getaddrinfo || !ipv6_getnameinfo) { | |
1649 | ipv6_freeaddrinfo = freeaddrinfo_stub; | |
1650 | ipv6_getaddrinfo = getaddrinfo_stub; | |
1651 | ipv6_getnameinfo = getnameinfo_stub; | |
1652 | } | |
1653 | ||
1654 | atexit(socket_cleanup); | |
b7cc9f82 MS |
1655 | initialized = 1; |
1656 | } | |
1657 | ||
13d24b01 PT |
1658 | #undef gethostname |
1659 | int mingw_gethostname(char *name, int namelen) | |
1660 | { | |
1661 | ensure_socket_initialization(); | |
1662 | return gethostname(name, namelen); | |
1663 | } | |
1664 | ||
b7cc9f82 MS |
1665 | #undef gethostbyname |
1666 | struct hostent *mingw_gethostbyname(const char *host) | |
1667 | { | |
1668 | ensure_socket_initialization(); | |
746fb857 JS |
1669 | return gethostbyname(host); |
1670 | } | |
1671 | ||
fe3b2b7b MS |
1672 | void mingw_freeaddrinfo(struct addrinfo *res) |
1673 | { | |
1674 | ipv6_freeaddrinfo(res); | |
1675 | } | |
1676 | ||
1677 | int mingw_getaddrinfo(const char *node, const char *service, | |
1678 | const struct addrinfo *hints, struct addrinfo **res) | |
1679 | { | |
1680 | ensure_socket_initialization(); | |
1681 | return ipv6_getaddrinfo(node, service, hints, res); | |
1682 | } | |
1683 | ||
1684 | int mingw_getnameinfo(const struct sockaddr *sa, socklen_t salen, | |
1685 | char *host, DWORD hostlen, char *serv, DWORD servlen, | |
1686 | int flags) | |
1687 | { | |
1688 | ensure_socket_initialization(); | |
1689 | return ipv6_getnameinfo(sa, salen, host, hostlen, serv, servlen, flags); | |
1690 | } | |
1691 | ||
746fb857 JS |
1692 | int mingw_socket(int domain, int type, int protocol) |
1693 | { | |
1694 | int sockfd; | |
772991af MP |
1695 | SOCKET s; |
1696 | ||
1697 | ensure_socket_initialization(); | |
1698 | s = WSASocket(domain, type, protocol, NULL, 0, 0); | |
746fb857 JS |
1699 | if (s == INVALID_SOCKET) { |
1700 | /* | |
1701 | * WSAGetLastError() values are regular BSD error codes | |
1702 | * biased by WSABASEERR. | |
1703 | * However, strerror() does not know about networking | |
1704 | * specific errors, which are values beginning at 38 or so. | |
1705 | * Therefore, we choose to leave the biased error code | |
1706 | * in errno so that _if_ someone looks up the code somewhere, | |
1707 | * then it is at least the number that are usually listed. | |
1708 | */ | |
1709 | errno = WSAGetLastError(); | |
1710 | return -1; | |
1711 | } | |
1712 | /* convert into a file descriptor */ | |
1713 | if ((sockfd = _open_osfhandle(s, O_RDWR|O_BINARY)) < 0) { | |
1714 | closesocket(s); | |
1715 | return error("unable to make a socket file descriptor: %s", | |
1716 | strerror(errno)); | |
1717 | } | |
1718 | return sockfd; | |
1719 | } | |
1720 | ||
1721 | #undef connect | |
1722 | int mingw_connect(int sockfd, struct sockaddr *sa, size_t sz) | |
1723 | { | |
1724 | SOCKET s = (SOCKET)_get_osfhandle(sockfd); | |
1725 | return connect(s, sa, sz); | |
1726 | } | |
1727 | ||
772991af MP |
1728 | #undef bind |
1729 | int mingw_bind(int sockfd, struct sockaddr *sa, size_t sz) | |
1730 | { | |
1731 | SOCKET s = (SOCKET)_get_osfhandle(sockfd); | |
1732 | return bind(s, sa, sz); | |
1733 | } | |
1734 | ||
1735 | #undef setsockopt | |
1736 | int mingw_setsockopt(int sockfd, int lvl, int optname, void *optval, int optlen) | |
1737 | { | |
1738 | SOCKET s = (SOCKET)_get_osfhandle(sockfd); | |
1739 | return setsockopt(s, lvl, optname, (const char*)optval, optlen); | |
1740 | } | |
1741 | ||
a7941795 JS |
1742 | #undef shutdown |
1743 | int mingw_shutdown(int sockfd, int how) | |
1744 | { | |
1745 | SOCKET s = (SOCKET)_get_osfhandle(sockfd); | |
1746 | return shutdown(s, how); | |
1747 | } | |
1748 | ||
772991af MP |
1749 | #undef listen |
1750 | int mingw_listen(int sockfd, int backlog) | |
1751 | { | |
1752 | SOCKET s = (SOCKET)_get_osfhandle(sockfd); | |
1753 | return listen(s, backlog); | |
1754 | } | |
1755 | ||
1756 | #undef accept | |
1757 | int mingw_accept(int sockfd1, struct sockaddr *sa, socklen_t *sz) | |
1758 | { | |
1759 | int sockfd2; | |
1760 | ||
1761 | SOCKET s1 = (SOCKET)_get_osfhandle(sockfd1); | |
1762 | SOCKET s2 = accept(s1, sa, sz); | |
1763 | ||
1764 | /* convert into a file descriptor */ | |
1765 | if ((sockfd2 = _open_osfhandle(s2, O_RDWR|O_BINARY)) < 0) { | |
1766 | int err = errno; | |
1767 | closesocket(s2); | |
1768 | return error("unable to make a socket file descriptor: %s", | |
1769 | strerror(err)); | |
1770 | } | |
1771 | return sockfd2; | |
1772 | } | |
1773 | ||
ea9e98c3 JS |
1774 | #undef rename |
1775 | int mingw_rename(const char *pold, const char *pnew) | |
1776 | { | |
6ac6f878 JS |
1777 | DWORD attrs, gle; |
1778 | int tries = 0; | |
85faec9d KB |
1779 | wchar_t wpold[MAX_PATH], wpnew[MAX_PATH]; |
1780 | if (xutftowcs_path(wpold, pold) < 0 || xutftowcs_path(wpnew, pnew) < 0) | |
1781 | return -1; | |
632f7017 | 1782 | |
ea9e98c3 JS |
1783 | /* |
1784 | * Try native rename() first to get errno right. | |
1785 | * It is based on MoveFile(), which cannot overwrite existing files. | |
1786 | */ | |
85faec9d | 1787 | if (!_wrename(wpold, wpnew)) |
ea9e98c3 JS |
1788 | return 0; |
1789 | if (errno != EEXIST) | |
1790 | return -1; | |
6ac6f878 | 1791 | repeat: |
85faec9d | 1792 | if (MoveFileExW(wpold, wpnew, MOVEFILE_REPLACE_EXISTING)) |
ea9e98c3 JS |
1793 | return 0; |
1794 | /* TODO: translate more errors */ | |
6ac6f878 JS |
1795 | gle = GetLastError(); |
1796 | if (gle == ERROR_ACCESS_DENIED && | |
85faec9d | 1797 | (attrs = GetFileAttributesW(wpnew)) != INVALID_FILE_ATTRIBUTES) { |
632f7017 | 1798 | if (attrs & FILE_ATTRIBUTE_DIRECTORY) { |
4426fb51 | 1799 | DWORD attrsold = GetFileAttributesW(wpold); |
1800 | if (attrsold == INVALID_FILE_ATTRIBUTES || | |
1801 | !(attrsold & FILE_ATTRIBUTE_DIRECTORY)) | |
1802 | errno = EISDIR; | |
1803 | else if (!_wrmdir(wpnew)) | |
1804 | goto repeat; | |
ea9e98c3 JS |
1805 | return -1; |
1806 | } | |
632f7017 | 1807 | if ((attrs & FILE_ATTRIBUTE_READONLY) && |
85faec9d KB |
1808 | SetFileAttributesW(wpnew, attrs & ~FILE_ATTRIBUTE_READONLY)) { |
1809 | if (MoveFileExW(wpold, wpnew, MOVEFILE_REPLACE_EXISTING)) | |
632f7017 | 1810 | return 0; |
6ac6f878 | 1811 | gle = GetLastError(); |
632f7017 | 1812 | /* revert file attributes on failure */ |
85faec9d | 1813 | SetFileAttributesW(wpnew, attrs); |
632f7017 | 1814 | } |
ea9e98c3 | 1815 | } |
6ac6f878 JS |
1816 | if (tries < ARRAY_SIZE(delay) && gle == ERROR_ACCESS_DENIED) { |
1817 | /* | |
1818 | * We assume that some other process had the source or | |
1819 | * destination file open at the wrong moment and retry. | |
1820 | * In order to give the other process a higher chance to | |
1821 | * complete its operation, we give up our time slice now. | |
1822 | * If we have to retry again, we do sleep a bit. | |
1823 | */ | |
1824 | Sleep(delay[tries]); | |
1825 | tries++; | |
1826 | goto repeat; | |
1827 | } | |
c9b78400 HV |
1828 | if (gle == ERROR_ACCESS_DENIED && |
1829 | ask_yes_no_if_possible("Rename from '%s' to '%s' failed. " | |
1830 | "Should I try again?", pold, pnew)) | |
1831 | goto repeat; | |
1832 | ||
ea9e98c3 JS |
1833 | errno = EACCES; |
1834 | return -1; | |
1835 | } | |
1836 | ||
b1b95204 RJ |
1837 | /* |
1838 | * Note that this doesn't return the actual pagesize, but | |
1839 | * the allocation granularity. If future Windows specific git code | |
1840 | * needs the real getpagesize function, we need to find another solution. | |
1841 | */ | |
1842 | int mingw_getpagesize(void) | |
1843 | { | |
1844 | SYSTEM_INFO si; | |
1845 | GetSystemInfo(&si); | |
1846 | return si.dwAllocationGranularity; | |
1847 | } | |
1848 | ||
564be791 JS |
1849 | /* See https://msdn.microsoft.com/en-us/library/windows/desktop/ms724435.aspx */ |
1850 | enum EXTENDED_NAME_FORMAT { | |
1851 | NameDisplay = 3, | |
1852 | NameUserPrincipal = 8 | |
1853 | }; | |
1854 | ||
1855 | static char *get_extended_user_info(enum EXTENDED_NAME_FORMAT type) | |
1856 | { | |
1857 | DECLARE_PROC_ADDR(secur32.dll, BOOL, GetUserNameExW, | |
1858 | enum EXTENDED_NAME_FORMAT, LPCWSTR, PULONG); | |
1859 | static wchar_t wbuffer[1024]; | |
1860 | DWORD len; | |
1861 | ||
1862 | if (!INIT_PROC_ADDR(GetUserNameExW)) | |
1863 | return NULL; | |
1864 | ||
1865 | len = ARRAY_SIZE(wbuffer); | |
1866 | if (GetUserNameExW(type, wbuffer, &len)) { | |
1867 | char *converted = xmalloc((len *= 3)); | |
1868 | if (xwcstoutf(converted, wbuffer, len) >= 0) | |
1869 | return converted; | |
1870 | free(converted); | |
1871 | } | |
1872 | ||
1873 | return NULL; | |
1874 | } | |
1875 | ||
501afcb8 JS |
1876 | char *mingw_query_user_email(void) |
1877 | { | |
1878 | return get_extended_user_info(NameUserPrincipal); | |
1879 | } | |
1880 | ||
f4626df5 JS |
1881 | struct passwd *getpwuid(int uid) |
1882 | { | |
55b6513e | 1883 | static unsigned initialized; |
f7597aca | 1884 | static char user_name[100]; |
55b6513e JS |
1885 | static struct passwd *p; |
1886 | DWORD len; | |
f7597aca | 1887 | |
55b6513e JS |
1888 | if (initialized) |
1889 | return p; | |
f7597aca | 1890 | |
55b6513e JS |
1891 | len = sizeof(user_name); |
1892 | if (!GetUserName(user_name, &len)) { | |
1893 | initialized = 1; | |
f7597aca | 1894 | return NULL; |
55b6513e JS |
1895 | } |
1896 | ||
1897 | p = xmalloc(sizeof(*p)); | |
1898 | p->pw_name = user_name; | |
564be791 JS |
1899 | p->pw_gecos = get_extended_user_info(NameDisplay); |
1900 | if (!p->pw_gecos) | |
1901 | p->pw_gecos = "unknown"; | |
55b6513e JS |
1902 | p->pw_dir = NULL; |
1903 | ||
1904 | initialized = 1; | |
1905 | return p; | |
f4626df5 JS |
1906 | } |
1907 | ||
6072fc31 JS |
1908 | static HANDLE timer_event; |
1909 | static HANDLE timer_thread; | |
1910 | static int timer_interval; | |
1911 | static int one_shot; | |
176478a8 | 1912 | static sig_handler_t timer_fn = SIG_DFL, sigint_fn = SIG_DFL; |
6072fc31 JS |
1913 | |
1914 | /* The timer works like this: | |
1915 | * The thread, ticktack(), is a trivial routine that most of the time | |
1916 | * only waits to receive the signal to terminate. The main thread tells | |
1917 | * the thread to terminate by setting the timer_event to the signalled | |
1918 | * state. | |
1919 | * But ticktack() interrupts the wait state after the timer's interval | |
1920 | * length to call the signal handler. | |
1921 | */ | |
1922 | ||
d7fa500f | 1923 | static unsigned __stdcall ticktack(void *dummy) |
6072fc31 JS |
1924 | { |
1925 | while (WaitForSingleObject(timer_event, timer_interval) == WAIT_TIMEOUT) { | |
176478a8 | 1926 | mingw_raise(SIGALRM); |
6072fc31 JS |
1927 | if (one_shot) |
1928 | break; | |
1929 | } | |
1930 | return 0; | |
1931 | } | |
1932 | ||
1933 | static int start_timer_thread(void) | |
1934 | { | |
1935 | timer_event = CreateEvent(NULL, FALSE, FALSE, NULL); | |
1936 | if (timer_event) { | |
1937 | timer_thread = (HANDLE) _beginthreadex(NULL, 0, ticktack, NULL, 0, NULL); | |
1938 | if (!timer_thread ) | |
1939 | return errno = ENOMEM, | |
1940 | error("cannot start timer thread"); | |
1941 | } else | |
1942 | return errno = ENOMEM, | |
1943 | error("cannot allocate resources for timer"); | |
1944 | return 0; | |
1945 | } | |
1946 | ||
1947 | static void stop_timer_thread(void) | |
1948 | { | |
1949 | if (timer_event) | |
1950 | SetEvent(timer_event); /* tell thread to terminate */ | |
1951 | if (timer_thread) { | |
1952 | int rc = WaitForSingleObject(timer_thread, 1000); | |
1953 | if (rc == WAIT_TIMEOUT) | |
1954 | error("timer thread did not terminate timely"); | |
1955 | else if (rc != WAIT_OBJECT_0) | |
1956 | error("waiting for timer thread failed: %lu", | |
1957 | GetLastError()); | |
1958 | CloseHandle(timer_thread); | |
1959 | } | |
1960 | if (timer_event) | |
1961 | CloseHandle(timer_event); | |
1962 | timer_event = NULL; | |
1963 | timer_thread = NULL; | |
1964 | } | |
1965 | ||
1966 | static inline int is_timeval_eq(const struct timeval *i1, const struct timeval *i2) | |
1967 | { | |
1968 | return i1->tv_sec == i2->tv_sec && i1->tv_usec == i2->tv_usec; | |
1969 | } | |
1970 | ||
f4626df5 JS |
1971 | int setitimer(int type, struct itimerval *in, struct itimerval *out) |
1972 | { | |
6072fc31 JS |
1973 | static const struct timeval zero; |
1974 | static int atexit_done; | |
1975 | ||
1976 | if (out != NULL) | |
1977 | return errno = EINVAL, | |
1978 | error("setitimer param 3 != NULL not implemented"); | |
1979 | if (!is_timeval_eq(&in->it_interval, &zero) && | |
1980 | !is_timeval_eq(&in->it_interval, &in->it_value)) | |
1981 | return errno = EINVAL, | |
1982 | error("setitimer: it_interval must be zero or eq it_value"); | |
1983 | ||
1984 | if (timer_thread) | |
1985 | stop_timer_thread(); | |
1986 | ||
1987 | if (is_timeval_eq(&in->it_value, &zero) && | |
1988 | is_timeval_eq(&in->it_interval, &zero)) | |
1989 | return 0; | |
1990 | ||
1991 | timer_interval = in->it_value.tv_sec * 1000 + in->it_value.tv_usec / 1000; | |
1992 | one_shot = is_timeval_eq(&in->it_interval, &zero); | |
1993 | if (!atexit_done) { | |
1994 | atexit(stop_timer_thread); | |
1995 | atexit_done = 1; | |
1996 | } | |
1997 | return start_timer_thread(); | |
f4626df5 JS |
1998 | } |
1999 | ||
2000 | int sigaction(int sig, struct sigaction *in, struct sigaction *out) | |
2001 | { | |
6072fc31 JS |
2002 | if (sig != SIGALRM) |
2003 | return errno = EINVAL, | |
2004 | error("sigaction only implemented for SIGALRM"); | |
2005 | if (out != NULL) | |
2006 | return errno = EINVAL, | |
2007 | error("sigaction: param 3 != NULL not implemented"); | |
2008 | ||
2009 | timer_fn = in->sa_handler; | |
2010 | return 0; | |
2011 | } | |
2012 | ||
2013 | #undef signal | |
2014 | sig_handler_t mingw_signal(int sig, sig_handler_t handler) | |
2015 | { | |
a4540658 | 2016 | sig_handler_t old; |
176478a8 EFL |
2017 | |
2018 | switch (sig) { | |
2019 | case SIGALRM: | |
a4540658 | 2020 | old = timer_fn; |
176478a8 EFL |
2021 | timer_fn = handler; |
2022 | break; | |
2023 | ||
2024 | case SIGINT: | |
a4540658 | 2025 | old = sigint_fn; |
176478a8 EFL |
2026 | sigint_fn = handler; |
2027 | break; | |
2028 | ||
2029 | default: | |
6072fc31 | 2030 | return signal(sig, handler); |
176478a8 EFL |
2031 | } |
2032 | ||
6072fc31 | 2033 | return old; |
f4626df5 | 2034 | } |
4804aabc | 2035 | |
176478a8 EFL |
2036 | #undef raise |
2037 | int mingw_raise(int sig) | |
2038 | { | |
2039 | switch (sig) { | |
2040 | case SIGALRM: | |
2041 | if (timer_fn == SIG_DFL) { | |
2042 | if (isatty(STDERR_FILENO)) | |
2043 | fputs("Alarm clock\n", stderr); | |
2044 | exit(128 + SIGALRM); | |
2045 | } else if (timer_fn != SIG_IGN) | |
2046 | timer_fn(SIGALRM); | |
2047 | return 0; | |
2048 | ||
2049 | case SIGINT: | |
2050 | if (sigint_fn == SIG_DFL) | |
2051 | exit(128 + SIGINT); | |
2052 | else if (sigint_fn != SIG_IGN) | |
2053 | sigint_fn(SIGINT); | |
2054 | return 0; | |
2055 | ||
2056 | default: | |
2057 | return raise(sig); | |
2058 | } | |
2059 | } | |
2060 | ||
7be401e0 PK |
2061 | int link(const char *oldpath, const char *newpath) |
2062 | { | |
85faec9d | 2063 | typedef BOOL (WINAPI *T)(LPCWSTR, LPCWSTR, LPSECURITY_ATTRIBUTES); |
7be401e0 | 2064 | static T create_hard_link = NULL; |
85faec9d KB |
2065 | wchar_t woldpath[MAX_PATH], wnewpath[MAX_PATH]; |
2066 | if (xutftowcs_path(woldpath, oldpath) < 0 || | |
2067 | xutftowcs_path(wnewpath, newpath) < 0) | |
2068 | return -1; | |
2069 | ||
7be401e0 PK |
2070 | if (!create_hard_link) { |
2071 | create_hard_link = (T) GetProcAddress( | |
85faec9d | 2072 | GetModuleHandle("kernel32.dll"), "CreateHardLinkW"); |
7be401e0 PK |
2073 | if (!create_hard_link) |
2074 | create_hard_link = (T)-1; | |
2075 | } | |
2076 | if (create_hard_link == (T)-1) { | |
2077 | errno = ENOSYS; | |
2078 | return -1; | |
2079 | } | |
85faec9d | 2080 | if (!create_hard_link(wnewpath, woldpath, NULL)) { |
7be401e0 PK |
2081 | errno = err_win_to_posix(GetLastError()); |
2082 | return -1; | |
2083 | } | |
2084 | return 0; | |
2085 | } | |
0dbbbc1e | 2086 | |
956d86d1 | 2087 | pid_t waitpid(pid_t pid, int *status, int options) |
52de4db5 EFL |
2088 | { |
2089 | HANDLE h = OpenProcess(SYNCHRONIZE | PROCESS_QUERY_INFORMATION, | |
2090 | FALSE, pid); | |
2091 | if (!h) { | |
2092 | errno = ECHILD; | |
2093 | return -1; | |
2094 | } | |
2095 | ||
ef7108ca EFL |
2096 | if (pid > 0 && options & WNOHANG) { |
2097 | if (WAIT_OBJECT_0 != WaitForSingleObject(h, 0)) { | |
2098 | CloseHandle(h); | |
2099 | return 0; | |
2100 | } | |
2101 | options &= ~WNOHANG; | |
2102 | } | |
2103 | ||
52de4db5 EFL |
2104 | if (options == 0) { |
2105 | struct pinfo_t **ppinfo; | |
2106 | if (WaitForSingleObject(h, INFINITE) != WAIT_OBJECT_0) { | |
2107 | CloseHandle(h); | |
2108 | return 0; | |
2109 | } | |
2110 | ||
2111 | if (status) | |
2112 | GetExitCodeProcess(h, (LPDWORD)status); | |
2113 | ||
2114 | EnterCriticalSection(&pinfo_cs); | |
2115 | ||
2116 | ppinfo = &pinfo; | |
2117 | while (*ppinfo) { | |
2118 | struct pinfo_t *info = *ppinfo; | |
2119 | if (info->pid == pid) { | |
2120 | CloseHandle(info->proc); | |
2121 | *ppinfo = info->next; | |
2122 | free(info); | |
2123 | break; | |
2124 | } | |
2125 | ppinfo = &info->next; | |
2126 | } | |
2127 | ||
2128 | LeaveCriticalSection(&pinfo_cs); | |
2129 | ||
2130 | CloseHandle(h); | |
2131 | return pid; | |
2132 | } | |
2133 | CloseHandle(h); | |
2134 | ||
2135 | errno = EINVAL; | |
2136 | return -1; | |
2137 | } | |
c2369bdf | 2138 | |
e7d5ce81 JS |
2139 | int mingw_skip_dos_drive_prefix(char **path) |
2140 | { | |
2141 | int ret = has_dos_drive_prefix(*path); | |
2142 | *path += ret; | |
2143 | return ret; | |
2144 | } | |
2145 | ||
c2369bdf CZ |
2146 | int mingw_offset_1st_component(const char *path) |
2147 | { | |
2f36eed9 | 2148 | char *pos = (char *)path; |
c2369bdf CZ |
2149 | |
2150 | /* unc paths */ | |
2f36eed9 JS |
2151 | if (!skip_dos_drive_prefix(&pos) && |
2152 | is_dir_sep(pos[0]) && is_dir_sep(pos[1])) { | |
c2369bdf | 2153 | /* skip server name */ |
2f36eed9 | 2154 | pos = strpbrk(pos + 2, "\\/"); |
c2369bdf CZ |
2155 | if (!pos) |
2156 | return 0; /* Error: malformed unc path */ | |
2157 | ||
2158 | do { | |
2159 | pos++; | |
2160 | } while (*pos && !is_dir_sep(*pos)); | |
c2369bdf CZ |
2161 | } |
2162 | ||
2f36eed9 | 2163 | return pos + is_dir_sep(*pos) - path; |
c2369bdf | 2164 | } |
13f1df43 | 2165 | |
1c950a59 KB |
2166 | int xutftowcsn(wchar_t *wcs, const char *utfs, size_t wcslen, int utflen) |
2167 | { | |
2168 | int upos = 0, wpos = 0; | |
2169 | const unsigned char *utf = (const unsigned char*) utfs; | |
2170 | if (!utf || !wcs || wcslen < 1) { | |
2171 | errno = EINVAL; | |
2172 | return -1; | |
2173 | } | |
2174 | /* reserve space for \0 */ | |
2175 | wcslen--; | |
2176 | if (utflen < 0) | |
2177 | utflen = INT_MAX; | |
2178 | ||
2179 | while (upos < utflen) { | |
2180 | int c = utf[upos++] & 0xff; | |
2181 | if (utflen == INT_MAX && c == 0) | |
2182 | break; | |
2183 | ||
2184 | if (wpos >= wcslen) { | |
2185 | wcs[wpos] = 0; | |
2186 | errno = ERANGE; | |
2187 | return -1; | |
2188 | } | |
2189 | ||
2190 | if (c < 0x80) { | |
2191 | /* ASCII */ | |
2192 | wcs[wpos++] = c; | |
2193 | } else if (c >= 0xc2 && c < 0xe0 && upos < utflen && | |
2194 | (utf[upos] & 0xc0) == 0x80) { | |
2195 | /* 2-byte utf-8 */ | |
2196 | c = ((c & 0x1f) << 6); | |
2197 | c |= (utf[upos++] & 0x3f); | |
2198 | wcs[wpos++] = c; | |
2199 | } else if (c >= 0xe0 && c < 0xf0 && upos + 1 < utflen && | |
2200 | !(c == 0xe0 && utf[upos] < 0xa0) && /* over-long encoding */ | |
2201 | (utf[upos] & 0xc0) == 0x80 && | |
2202 | (utf[upos + 1] & 0xc0) == 0x80) { | |
2203 | /* 3-byte utf-8 */ | |
2204 | c = ((c & 0x0f) << 12); | |
2205 | c |= ((utf[upos++] & 0x3f) << 6); | |
2206 | c |= (utf[upos++] & 0x3f); | |
2207 | wcs[wpos++] = c; | |
2208 | } else if (c >= 0xf0 && c < 0xf5 && upos + 2 < utflen && | |
2209 | wpos + 1 < wcslen && | |
2210 | !(c == 0xf0 && utf[upos] < 0x90) && /* over-long encoding */ | |
2211 | !(c == 0xf4 && utf[upos] >= 0x90) && /* > \u10ffff */ | |
2212 | (utf[upos] & 0xc0) == 0x80 && | |
2213 | (utf[upos + 1] & 0xc0) == 0x80 && | |
2214 | (utf[upos + 2] & 0xc0) == 0x80) { | |
2215 | /* 4-byte utf-8: convert to \ud8xx \udcxx surrogate pair */ | |
2216 | c = ((c & 0x07) << 18); | |
2217 | c |= ((utf[upos++] & 0x3f) << 12); | |
2218 | c |= ((utf[upos++] & 0x3f) << 6); | |
2219 | c |= (utf[upos++] & 0x3f); | |
2220 | c -= 0x10000; | |
2221 | wcs[wpos++] = 0xd800 | (c >> 10); | |
2222 | wcs[wpos++] = 0xdc00 | (c & 0x3ff); | |
2223 | } else if (c >= 0xa0) { | |
2224 | /* invalid utf-8 byte, printable unicode char: convert 1:1 */ | |
2225 | wcs[wpos++] = c; | |
2226 | } else { | |
2227 | /* invalid utf-8 byte, non-printable unicode: convert to hex */ | |
2228 | static const char *hex = "0123456789abcdef"; | |
2229 | wcs[wpos++] = hex[c >> 4]; | |
2230 | if (wpos < wcslen) | |
2231 | wcs[wpos++] = hex[c & 0x0f]; | |
2232 | } | |
2233 | } | |
2234 | wcs[wpos] = 0; | |
2235 | return wpos; | |
2236 | } | |
2237 | ||
2238 | int xwcstoutf(char *utf, const wchar_t *wcs, size_t utflen) | |
2239 | { | |
2240 | if (!wcs || !utf || utflen < 1) { | |
2241 | errno = EINVAL; | |
2242 | return -1; | |
2243 | } | |
2244 | utflen = WideCharToMultiByte(CP_UTF8, 0, wcs, -1, utf, utflen, NULL, NULL); | |
2245 | if (utflen) | |
2246 | return utflen - 1; | |
2247 | errno = ERANGE; | |
2248 | return -1; | |
2249 | } | |
2250 | ||
0767172b | 2251 | static void setup_windows_environment(void) |
02e6edc0 | 2252 | { |
1fc7bf79 JS |
2253 | char *tmp = getenv("TMPDIR"); |
2254 | ||
02e6edc0 | 2255 | /* on Windows it is TMP and TEMP */ |
1fc7bf79 JS |
2256 | if (!tmp) { |
2257 | if (!(tmp = getenv("TMP"))) | |
02e6edc0 | 2258 | tmp = getenv("TEMP"); |
1fc7bf79 | 2259 | if (tmp) { |
02e6edc0 | 2260 | setenv("TMPDIR", tmp, 1); |
1fc7bf79 JS |
2261 | tmp = getenv("TMPDIR"); |
2262 | } | |
2263 | } | |
2264 | ||
2265 | if (tmp) { | |
2266 | /* | |
2267 | * Convert all dir separators to forward slashes, | |
2268 | * to help shell commands called from the Git | |
2269 | * executable (by not mistaking the dir separators | |
2270 | * for escape characters). | |
2271 | */ | |
8e9b2080 | 2272 | convert_slashes(tmp); |
02e6edc0 KB |
2273 | } |
2274 | ||
2275 | /* simulate TERM to enable auto-color (see color.c) */ | |
2276 | if (!getenv("TERM")) | |
2277 | setenv("TERM", "cygwin", 1); | |
2278 | } | |
2279 | ||
5901dc66 KB |
2280 | /* |
2281 | * Disable MSVCRT command line wildcard expansion (__getmainargs called from | |
2282 | * mingw startup code, see init.c in mingw runtime). | |
2283 | */ | |
2284 | int _CRT_glob = 0; | |
2285 | ||
3f046148 KB |
2286 | typedef struct { |
2287 | int newmode; | |
2288 | } _startupinfo; | |
2289 | ||
2290 | extern int __wgetmainargs(int *argc, wchar_t ***argv, wchar_t ***env, int glob, | |
2291 | _startupinfo *si); | |
2292 | ||
0767172b | 2293 | static NORETURN void die_startup(void) |
3f046148 KB |
2294 | { |
2295 | fputs("fatal: not enough memory for initialization", stderr); | |
2296 | exit(128); | |
2297 | } | |
2298 | ||
6f1c189c KB |
2299 | static void *malloc_startup(size_t size) |
2300 | { | |
2301 | void *result = malloc(size); | |
2302 | if (!result) | |
2303 | die_startup(); | |
2304 | return result; | |
2305 | } | |
2306 | ||
2307 | static char *wcstoutfdup_startup(char *buffer, const wchar_t *wcs, size_t len) | |
2308 | { | |
2309 | len = xwcstoutf(buffer, wcs, len) + 1; | |
2310 | return memcpy(malloc_startup(len), buffer, len); | |
2311 | } | |
2312 | ||
3f944424 JS |
2313 | static void maybe_redirect_std_handle(const wchar_t *key, DWORD std_id, int fd, |
2314 | DWORD desired_access, DWORD flags) | |
2315 | { | |
2316 | DWORD create_flag = fd ? OPEN_ALWAYS : OPEN_EXISTING; | |
2317 | wchar_t buf[MAX_PATH]; | |
2318 | DWORD max = ARRAY_SIZE(buf); | |
2319 | HANDLE handle; | |
2320 | DWORD ret = GetEnvironmentVariableW(key, buf, max); | |
2321 | ||
2322 | if (!ret || ret >= max) | |
2323 | return; | |
2324 | ||
2325 | /* make sure this does not leak into child processes */ | |
2326 | SetEnvironmentVariableW(key, NULL); | |
2327 | if (!wcscmp(buf, L"off")) { | |
2328 | close(fd); | |
2329 | handle = GetStdHandle(std_id); | |
2330 | if (handle != INVALID_HANDLE_VALUE) | |
2331 | CloseHandle(handle); | |
2332 | return; | |
2333 | } | |
1a172e4a JS |
2334 | if (std_id == STD_ERROR_HANDLE && !wcscmp(buf, L"2>&1")) { |
2335 | handle = GetStdHandle(STD_OUTPUT_HANDLE); | |
2336 | if (handle == INVALID_HANDLE_VALUE) { | |
2337 | close(fd); | |
2338 | handle = GetStdHandle(std_id); | |
2339 | if (handle != INVALID_HANDLE_VALUE) | |
2340 | CloseHandle(handle); | |
2341 | } else { | |
2342 | int new_fd = _open_osfhandle((intptr_t)handle, O_BINARY); | |
2343 | SetStdHandle(std_id, handle); | |
2344 | dup2(new_fd, fd); | |
2345 | /* do *not* close the new_fd: that would close stdout */ | |
2346 | } | |
2347 | return; | |
2348 | } | |
3f944424 JS |
2349 | handle = CreateFileW(buf, desired_access, 0, NULL, create_flag, |
2350 | flags, NULL); | |
2351 | if (handle != INVALID_HANDLE_VALUE) { | |
2352 | int new_fd = _open_osfhandle((intptr_t)handle, O_BINARY); | |
2353 | SetStdHandle(std_id, handle); | |
2354 | dup2(new_fd, fd); | |
2355 | close(new_fd); | |
2356 | } | |
2357 | } | |
2358 | ||
2359 | static void maybe_redirect_std_handles(void) | |
2360 | { | |
2361 | maybe_redirect_std_handle(L"GIT_REDIRECT_STDIN", STD_INPUT_HANDLE, 0, | |
2362 | GENERIC_READ, FILE_ATTRIBUTE_NORMAL); | |
2363 | maybe_redirect_std_handle(L"GIT_REDIRECT_STDOUT", STD_OUTPUT_HANDLE, 1, | |
2364 | GENERIC_WRITE, FILE_ATTRIBUTE_NORMAL); | |
2365 | maybe_redirect_std_handle(L"GIT_REDIRECT_STDERR", STD_ERROR_HANDLE, 2, | |
2366 | GENERIC_WRITE, FILE_FLAG_NO_BUFFERING); | |
2367 | } | |
2368 | ||
0767172b | 2369 | void mingw_startup(void) |
13f1df43 | 2370 | { |
6f1c189c | 2371 | int i, maxlen, argc; |
3f046148 KB |
2372 | char *buffer; |
2373 | wchar_t **wenv, **wargv; | |
2374 | _startupinfo si; | |
2375 | ||
3f944424 JS |
2376 | maybe_redirect_std_handles(); |
2377 | ||
3f046148 KB |
2378 | /* get wide char arguments and environment */ |
2379 | si.newmode = 0; | |
2380 | if (__wgetmainargs(&argc, &wargv, &wenv, _CRT_glob, &si) < 0) | |
2381 | die_startup(); | |
2382 | ||
2383 | /* determine size of argv and environ conversion buffer */ | |
86e25458 | 2384 | maxlen = wcslen(wargv[0]); |
3f046148 KB |
2385 | for (i = 1; i < argc; i++) |
2386 | maxlen = max(maxlen, wcslen(wargv[i])); | |
b729f98f KB |
2387 | for (i = 0; wenv[i]; i++) |
2388 | maxlen = max(maxlen, wcslen(wenv[i])); | |
2389 | ||
6f1c189c KB |
2390 | /* |
2391 | * nedmalloc can't free CRT memory, allocate resizable environment | |
2392 | * list. Note that xmalloc / xmemdupz etc. call getenv, so we cannot | |
2393 | * use it while initializing the environment itself. | |
2394 | */ | |
f279242d | 2395 | environ_size = i + 1; |
6f1c189c KB |
2396 | environ_alloc = alloc_nr(environ_size * sizeof(char*)); |
2397 | environ = malloc_startup(environ_alloc); | |
3f046148 KB |
2398 | |
2399 | /* allocate buffer (wchar_t encodes to max 3 UTF-8 bytes) */ | |
2400 | maxlen = 3 * maxlen + 1; | |
6f1c189c | 2401 | buffer = malloc_startup(maxlen); |
3f046148 KB |
2402 | |
2403 | /* convert command line arguments and environment to UTF-8 */ | |
86e25458 | 2404 | for (i = 0; i < argc; i++) |
6f1c189c KB |
2405 | __argv[i] = wcstoutfdup_startup(buffer, wargv[i], maxlen); |
2406 | for (i = 0; wenv[i]; i++) | |
2407 | environ[i] = wcstoutfdup_startup(buffer, wenv[i], maxlen); | |
f279242d | 2408 | environ[i] = NULL; |
3f046148 | 2409 | free(buffer); |
13f1df43 | 2410 | |
343ff06d KB |
2411 | /* sort environment for O(log n) getenv / putenv */ |
2412 | qsort(environ, i, sizeof(char*), compareenv); | |
2413 | ||
6dc71543 | 2414 | /* fix Windows specific environment settings */ |
02e6edc0 | 2415 | setup_windows_environment(); |
baea068d | 2416 | |
13f1df43 KB |
2417 | /* initialize critical section for waitpid pinfo_t list */ |
2418 | InitializeCriticalSection(&pinfo_cs); | |
2419 | ||
2420 | /* set up default file mode and file modes for stdin/out/err */ | |
2421 | _fmode = _O_BINARY; | |
2422 | _setmode(_fileno(stdin), _O_BINARY); | |
2423 | _setmode(_fileno(stdout), _O_BINARY); | |
2424 | _setmode(_fileno(stderr), _O_BINARY); | |
eac14f89 KB |
2425 | |
2426 | /* initialize Unicode console */ | |
2427 | winansi_init(); | |
13f1df43 | 2428 | } |
7b6aff06 NTND |
2429 | |
2430 | int uname(struct utsname *buf) | |
2431 | { | |
d62c89af | 2432 | unsigned v = (unsigned)GetVersion(); |
7b6aff06 | 2433 | memset(buf, 0, sizeof(*buf)); |
5096d490 JK |
2434 | xsnprintf(buf->sysname, sizeof(buf->sysname), "Windows"); |
2435 | xsnprintf(buf->release, sizeof(buf->release), | |
2436 | "%u.%u", v & 0xff, (v >> 8) & 0xff); | |
7b6aff06 | 2437 | /* assuming NT variants only.. */ |
5096d490 JK |
2438 | xsnprintf(buf->version, sizeof(buf->version), |
2439 | "%u", (v >> 16) & 0x7fff); | |
7b6aff06 NTND |
2440 | return 0; |
2441 | } |