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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" |
bdfbb0ea | 9 | #include "../config.h" |
9e9da23c | 10 | #include "dir.h" |
4a9b2049 MA |
11 | #define SECURITY_WIN32 |
12 | #include <sspi.h> | |
f4626df5 | 13 | |
7c00bc39 JS |
14 | #define HCAST(type, handle) ((type)(intptr_t)handle) |
15 | ||
19e12549 HV |
16 | static const int delay[] = { 0, 1, 10, 20, 40 }; |
17 | ||
08809c09 JS |
18 | void open_in_gdb(void) |
19 | { | |
20 | static struct child_process cp = CHILD_PROCESS_INIT; | |
21 | extern char *_pgmptr; | |
22 | ||
ef8d7ac4 JK |
23 | strvec_pushl(&cp.args, "mintty", "gdb", NULL); |
24 | strvec_pushf(&cp.args, "--pid=%d", getpid()); | |
08809c09 JS |
25 | cp.clean_on_exit = 1; |
26 | if (start_command(&cp) < 0) | |
27 | die_errno("Could not start gdb"); | |
28 | sleep(1); | |
29 | } | |
30 | ||
44626dc7 | 31 | int err_win_to_posix(DWORD winerr) |
b3debd2b PK |
32 | { |
33 | int error = ENOSYS; | |
34 | switch(winerr) { | |
35 | case ERROR_ACCESS_DENIED: error = EACCES; break; | |
36 | case ERROR_ACCOUNT_DISABLED: error = EACCES; break; | |
37 | case ERROR_ACCOUNT_RESTRICTION: error = EACCES; break; | |
38 | case ERROR_ALREADY_ASSIGNED: error = EBUSY; break; | |
39 | case ERROR_ALREADY_EXISTS: error = EEXIST; break; | |
40 | case ERROR_ARITHMETIC_OVERFLOW: error = ERANGE; break; | |
41 | case ERROR_BAD_COMMAND: error = EIO; break; | |
42 | case ERROR_BAD_DEVICE: error = ENODEV; break; | |
43 | case ERROR_BAD_DRIVER_LEVEL: error = ENXIO; break; | |
44 | case ERROR_BAD_EXE_FORMAT: error = ENOEXEC; break; | |
45 | case ERROR_BAD_FORMAT: error = ENOEXEC; break; | |
46 | case ERROR_BAD_LENGTH: error = EINVAL; break; | |
47 | case ERROR_BAD_PATHNAME: error = ENOENT; break; | |
48 | case ERROR_BAD_PIPE: error = EPIPE; break; | |
49 | case ERROR_BAD_UNIT: error = ENODEV; break; | |
50 | case ERROR_BAD_USERNAME: error = EINVAL; break; | |
51 | case ERROR_BROKEN_PIPE: error = EPIPE; break; | |
52 | case ERROR_BUFFER_OVERFLOW: error = ENAMETOOLONG; break; | |
53 | case ERROR_BUSY: error = EBUSY; break; | |
54 | case ERROR_BUSY_DRIVE: error = EBUSY; break; | |
55 | case ERROR_CALL_NOT_IMPLEMENTED: error = ENOSYS; break; | |
56 | case ERROR_CANNOT_MAKE: error = EACCES; break; | |
57 | case ERROR_CANTOPEN: error = EIO; break; | |
58 | case ERROR_CANTREAD: error = EIO; break; | |
59 | case ERROR_CANTWRITE: error = EIO; break; | |
60 | case ERROR_CRC: error = EIO; break; | |
61 | case ERROR_CURRENT_DIRECTORY: error = EACCES; break; | |
62 | case ERROR_DEVICE_IN_USE: error = EBUSY; break; | |
63 | case ERROR_DEV_NOT_EXIST: error = ENODEV; break; | |
64 | case ERROR_DIRECTORY: error = EINVAL; break; | |
65 | case ERROR_DIR_NOT_EMPTY: error = ENOTEMPTY; break; | |
66 | case ERROR_DISK_CHANGE: error = EIO; break; | |
67 | case ERROR_DISK_FULL: error = ENOSPC; break; | |
68 | case ERROR_DRIVE_LOCKED: error = EBUSY; break; | |
69 | case ERROR_ENVVAR_NOT_FOUND: error = EINVAL; break; | |
70 | case ERROR_EXE_MARKED_INVALID: error = ENOEXEC; break; | |
71 | case ERROR_FILENAME_EXCED_RANGE: error = ENAMETOOLONG; break; | |
72 | case ERROR_FILE_EXISTS: error = EEXIST; break; | |
73 | case ERROR_FILE_INVALID: error = ENODEV; break; | |
74 | case ERROR_FILE_NOT_FOUND: error = ENOENT; break; | |
75 | case ERROR_GEN_FAILURE: error = EIO; break; | |
76 | case ERROR_HANDLE_DISK_FULL: error = ENOSPC; break; | |
77 | case ERROR_INSUFFICIENT_BUFFER: error = ENOMEM; break; | |
78 | case ERROR_INVALID_ACCESS: error = EACCES; break; | |
79 | case ERROR_INVALID_ADDRESS: error = EFAULT; break; | |
80 | case ERROR_INVALID_BLOCK: error = EFAULT; break; | |
81 | case ERROR_INVALID_DATA: error = EINVAL; break; | |
82 | case ERROR_INVALID_DRIVE: error = ENODEV; break; | |
83 | case ERROR_INVALID_EXE_SIGNATURE: error = ENOEXEC; break; | |
84 | case ERROR_INVALID_FLAGS: error = EINVAL; break; | |
85 | case ERROR_INVALID_FUNCTION: error = ENOSYS; break; | |
86 | case ERROR_INVALID_HANDLE: error = EBADF; break; | |
87 | case ERROR_INVALID_LOGON_HOURS: error = EACCES; break; | |
88 | case ERROR_INVALID_NAME: error = EINVAL; break; | |
89 | case ERROR_INVALID_OWNER: error = EINVAL; break; | |
90 | case ERROR_INVALID_PARAMETER: error = EINVAL; break; | |
91 | case ERROR_INVALID_PASSWORD: error = EPERM; break; | |
92 | case ERROR_INVALID_PRIMARY_GROUP: error = EINVAL; break; | |
93 | case ERROR_INVALID_SIGNAL_NUMBER: error = EINVAL; break; | |
94 | case ERROR_INVALID_TARGET_HANDLE: error = EIO; break; | |
95 | case ERROR_INVALID_WORKSTATION: error = EACCES; break; | |
96 | case ERROR_IO_DEVICE: error = EIO; break; | |
97 | case ERROR_IO_INCOMPLETE: error = EINTR; break; | |
98 | case ERROR_LOCKED: error = EBUSY; break; | |
99 | case ERROR_LOCK_VIOLATION: error = EACCES; break; | |
100 | case ERROR_LOGON_FAILURE: error = EACCES; break; | |
101 | case ERROR_MAPPED_ALIGNMENT: error = EINVAL; break; | |
102 | case ERROR_META_EXPANSION_TOO_LONG: error = E2BIG; break; | |
103 | case ERROR_MORE_DATA: error = EPIPE; break; | |
104 | case ERROR_NEGATIVE_SEEK: error = ESPIPE; break; | |
105 | case ERROR_NOACCESS: error = EFAULT; break; | |
106 | case ERROR_NONE_MAPPED: error = EINVAL; break; | |
107 | case ERROR_NOT_ENOUGH_MEMORY: error = ENOMEM; break; | |
108 | case ERROR_NOT_READY: error = EAGAIN; break; | |
109 | case ERROR_NOT_SAME_DEVICE: error = EXDEV; break; | |
110 | case ERROR_NO_DATA: error = EPIPE; break; | |
111 | case ERROR_NO_MORE_SEARCH_HANDLES: error = EIO; break; | |
112 | case ERROR_NO_PROC_SLOTS: error = EAGAIN; break; | |
113 | case ERROR_NO_SUCH_PRIVILEGE: error = EACCES; break; | |
114 | case ERROR_OPEN_FAILED: error = EIO; break; | |
115 | case ERROR_OPEN_FILES: error = EBUSY; break; | |
116 | case ERROR_OPERATION_ABORTED: error = EINTR; break; | |
117 | case ERROR_OUTOFMEMORY: error = ENOMEM; break; | |
118 | case ERROR_PASSWORD_EXPIRED: error = EACCES; break; | |
119 | case ERROR_PATH_BUSY: error = EBUSY; break; | |
120 | case ERROR_PATH_NOT_FOUND: error = ENOENT; break; | |
121 | case ERROR_PIPE_BUSY: error = EBUSY; break; | |
122 | case ERROR_PIPE_CONNECTED: error = EPIPE; break; | |
123 | case ERROR_PIPE_LISTENING: error = EPIPE; break; | |
124 | case ERROR_PIPE_NOT_CONNECTED: error = EPIPE; break; | |
125 | case ERROR_PRIVILEGE_NOT_HELD: error = EACCES; break; | |
126 | case ERROR_READ_FAULT: error = EIO; break; | |
127 | case ERROR_SEEK: error = EIO; break; | |
128 | case ERROR_SEEK_ON_DEVICE: error = ESPIPE; break; | |
129 | case ERROR_SHARING_BUFFER_EXCEEDED: error = ENFILE; break; | |
130 | case ERROR_SHARING_VIOLATION: error = EACCES; break; | |
131 | case ERROR_STACK_OVERFLOW: error = ENOMEM; break; | |
3ba3720b | 132 | case ERROR_SUCCESS: BUG("err_win_to_posix() called without an error!"); |
b3debd2b PK |
133 | case ERROR_SWAPERROR: error = ENOENT; break; |
134 | case ERROR_TOO_MANY_MODULES: error = EMFILE; break; | |
135 | case ERROR_TOO_MANY_OPEN_FILES: error = EMFILE; break; | |
136 | case ERROR_UNRECOGNIZED_MEDIA: error = ENXIO; break; | |
137 | case ERROR_UNRECOGNIZED_VOLUME: error = ENODEV; break; | |
138 | case ERROR_WAIT_NO_CHILDREN: error = ECHILD; break; | |
139 | case ERROR_WRITE_FAULT: error = EIO; break; | |
140 | case ERROR_WRITE_PROTECT: error = EROFS; break; | |
141 | } | |
142 | return error; | |
143 | } | |
144 | ||
19e12549 HV |
145 | static inline int is_file_in_use_error(DWORD errcode) |
146 | { | |
147 | switch (errcode) { | |
148 | case ERROR_SHARING_VIOLATION: | |
149 | case ERROR_ACCESS_DENIED: | |
150 | return 1; | |
151 | } | |
152 | ||
153 | return 0; | |
154 | } | |
155 | ||
c9b78400 HV |
156 | static int read_yes_no_answer(void) |
157 | { | |
158 | char answer[1024]; | |
159 | ||
160 | if (fgets(answer, sizeof(answer), stdin)) { | |
161 | size_t answer_len = strlen(answer); | |
162 | int got_full_line = 0, c; | |
163 | ||
164 | /* remove the newline */ | |
165 | if (answer_len >= 2 && answer[answer_len-2] == '\r') { | |
166 | answer[answer_len-2] = '\0'; | |
167 | got_full_line = 1; | |
168 | } else if (answer_len >= 1 && answer[answer_len-1] == '\n') { | |
169 | answer[answer_len-1] = '\0'; | |
170 | got_full_line = 1; | |
171 | } | |
172 | /* flush the buffer in case we did not get the full line */ | |
173 | if (!got_full_line) | |
174 | while ((c = getchar()) != EOF && c != '\n') | |
175 | ; | |
176 | } else | |
177 | /* we could not read, return the | |
178 | * default answer which is no */ | |
179 | return 0; | |
180 | ||
181 | if (tolower(answer[0]) == 'y' && !answer[1]) | |
182 | return 1; | |
183 | if (!strncasecmp(answer, "yes", sizeof(answer))) | |
184 | return 1; | |
185 | if (tolower(answer[0]) == 'n' && !answer[1]) | |
186 | return 0; | |
187 | if (!strncasecmp(answer, "no", sizeof(answer))) | |
188 | return 0; | |
189 | ||
190 | /* did not find an answer we understand */ | |
191 | return -1; | |
192 | } | |
193 | ||
194 | static int ask_yes_no_if_possible(const char *format, ...) | |
195 | { | |
196 | char question[4096]; | |
197 | const char *retry_hook[] = { NULL, NULL, NULL }; | |
198 | va_list args; | |
199 | ||
200 | va_start(args, format); | |
201 | vsnprintf(question, sizeof(question), format, args); | |
202 | va_end(args); | |
203 | ||
06bc4b79 | 204 | if ((retry_hook[0] = mingw_getenv("GIT_ASK_YESNO"))) { |
c9b78400 HV |
205 | retry_hook[1] = question; |
206 | return !run_command_v_opt(retry_hook, 0); | |
207 | } | |
208 | ||
209 | if (!isatty(_fileno(stdin)) || !isatty(_fileno(stderr))) | |
210 | return 0; | |
211 | ||
212 | while (1) { | |
213 | int answer; | |
214 | fprintf(stderr, "%s (y/n) ", question); | |
215 | ||
216 | if ((answer = read_yes_no_answer()) >= 0) | |
217 | return answer; | |
218 | ||
219 | fprintf(stderr, "Sorry, I did not understand your answer. " | |
220 | "Please type 'y' or 'n'\n"); | |
221 | } | |
222 | } | |
223 | ||
bdfbb0ea JS |
224 | /* Windows only */ |
225 | enum hide_dotfiles_type { | |
226 | HIDE_DOTFILES_FALSE = 0, | |
227 | HIDE_DOTFILES_TRUE, | |
228 | HIDE_DOTFILES_DOTGITONLY | |
229 | }; | |
230 | ||
ac33519d | 231 | static int core_restrict_inherited_handles = -1; |
bdfbb0ea | 232 | static enum hide_dotfiles_type hide_dotfiles = HIDE_DOTFILES_DOTGITONLY; |
0e218f91 | 233 | static char *unset_environment_variables; |
bdfbb0ea | 234 | |
70fc5793 JS |
235 | int mingw_core_config(const char *var, const char *value, void *cb) |
236 | { | |
bdfbb0ea JS |
237 | if (!strcmp(var, "core.hidedotfiles")) { |
238 | if (value && !strcasecmp(value, "dotgitonly")) | |
239 | hide_dotfiles = HIDE_DOTFILES_DOTGITONLY; | |
240 | else | |
241 | hide_dotfiles = git_config_bool(var, value); | |
242 | return 0; | |
243 | } | |
244 | ||
0e218f91 JS |
245 | if (!strcmp(var, "core.unsetenvvars")) { |
246 | free(unset_environment_variables); | |
247 | unset_environment_variables = xstrdup(value); | |
248 | return 0; | |
249 | } | |
250 | ||
ac33519d JS |
251 | if (!strcmp(var, "core.restrictinheritedhandles")) { |
252 | if (value && !strcasecmp(value, "auto")) | |
253 | core_restrict_inherited_handles = -1; | |
254 | else | |
255 | core_restrict_inherited_handles = | |
256 | git_config_bool(var, value); | |
257 | return 0; | |
258 | } | |
259 | ||
70fc5793 JS |
260 | return 0; |
261 | } | |
262 | ||
4745feeb AS |
263 | /* Normalizes NT paths as returned by some low-level APIs. */ |
264 | static wchar_t *normalize_ntpath(wchar_t *wbuf) | |
265 | { | |
266 | int i; | |
267 | /* fix absolute path prefixes */ | |
268 | if (wbuf[0] == '\\') { | |
269 | /* strip NT namespace prefixes */ | |
270 | if (!wcsncmp(wbuf, L"\\??\\", 4) || | |
271 | !wcsncmp(wbuf, L"\\\\?\\", 4)) | |
272 | wbuf += 4; | |
273 | else if (!wcsnicmp(wbuf, L"\\DosDevices\\", 12)) | |
274 | wbuf += 12; | |
275 | /* replace remaining '...UNC\' with '\\' */ | |
276 | if (!wcsnicmp(wbuf, L"UNC\\", 4)) { | |
277 | wbuf += 2; | |
278 | *wbuf = '\\'; | |
279 | } | |
280 | } | |
281 | /* convert backslashes to slashes */ | |
282 | for (i = 0; wbuf[i]; i++) | |
283 | if (wbuf[i] == '\\') | |
284 | wbuf[i] = '/'; | |
285 | return wbuf; | |
286 | } | |
287 | ||
337967fb HV |
288 | int mingw_unlink(const char *pathname) |
289 | { | |
19e12549 | 290 | int ret, tries = 0; |
85faec9d KB |
291 | wchar_t wpathname[MAX_PATH]; |
292 | if (xutftowcs_path(wpathname, pathname) < 0) | |
293 | return -1; | |
19e12549 | 294 | |
680e0b45 JH |
295 | if (DeleteFileW(wpathname)) |
296 | return 0; | |
297 | ||
337967fb | 298 | /* read-only files cannot be removed */ |
85faec9d KB |
299 | _wchmod(wpathname, 0666); |
300 | while ((ret = _wunlink(wpathname)) == -1 && tries < ARRAY_SIZE(delay)) { | |
19e12549 HV |
301 | if (!is_file_in_use_error(GetLastError())) |
302 | break; | |
303 | /* | |
304 | * We assume that some other process had the source or | |
305 | * destination file open at the wrong moment and retry. | |
306 | * In order to give the other process a higher chance to | |
307 | * complete its operation, we give up our time slice now. | |
308 | * If we have to retry again, we do sleep a bit. | |
309 | */ | |
310 | Sleep(delay[tries]); | |
311 | tries++; | |
312 | } | |
c9b78400 HV |
313 | while (ret == -1 && is_file_in_use_error(GetLastError()) && |
314 | ask_yes_no_if_possible("Unlink of file '%s' failed. " | |
315 | "Should I try again?", pathname)) | |
85faec9d | 316 | ret = _wunlink(wpathname); |
19e12549 | 317 | return ret; |
337967fb HV |
318 | } |
319 | ||
85faec9d | 320 | static int is_dir_empty(const wchar_t *wpath) |
ab1a11be | 321 | { |
85faec9d | 322 | WIN32_FIND_DATAW findbuf; |
ab1a11be | 323 | HANDLE handle; |
85faec9d KB |
324 | wchar_t wbuf[MAX_PATH + 2]; |
325 | wcscpy(wbuf, wpath); | |
326 | wcscat(wbuf, L"\\*"); | |
327 | handle = FindFirstFileW(wbuf, &findbuf); | |
328 | if (handle == INVALID_HANDLE_VALUE) | |
ab1a11be | 329 | return GetLastError() == ERROR_NO_MORE_FILES; |
ab1a11be | 330 | |
85faec9d KB |
331 | while (!wcscmp(findbuf.cFileName, L".") || |
332 | !wcscmp(findbuf.cFileName, L"..")) | |
333 | if (!FindNextFileW(handle, &findbuf)) { | |
334 | DWORD err = GetLastError(); | |
335 | FindClose(handle); | |
336 | return err == ERROR_NO_MORE_FILES; | |
ab1a11be JS |
337 | } |
338 | FindClose(handle); | |
ab1a11be JS |
339 | return 0; |
340 | } | |
341 | ||
4f288100 HV |
342 | int mingw_rmdir(const char *pathname) |
343 | { | |
344 | int ret, tries = 0; | |
85faec9d | 345 | wchar_t wpathname[MAX_PATH]; |
3e7d4888 TB |
346 | struct stat st; |
347 | ||
348 | /* | |
349 | * Contrary to Linux' `rmdir()`, Windows' _wrmdir() and _rmdir() | |
350 | * (and `RemoveDirectoryW()`) will attempt to remove the target of a | |
351 | * symbolic link (if it points to a directory). | |
352 | * | |
353 | * This behavior breaks the assumption of e.g. `remove_path()` which | |
354 | * upon successful deletion of a file will attempt to remove its parent | |
355 | * directories recursively until failure (which usually happens when | |
356 | * the directory is not empty). | |
357 | * | |
358 | * Therefore, before calling `_wrmdir()`, we first check if the path is | |
359 | * a symbolic link. If it is, we exit and return the same error as | |
360 | * Linux' `rmdir()` would, i.e. `ENOTDIR`. | |
361 | */ | |
362 | if (!mingw_lstat(pathname, &st) && S_ISLNK(st.st_mode)) { | |
363 | errno = ENOTDIR; | |
364 | return -1; | |
365 | } | |
366 | ||
85faec9d KB |
367 | if (xutftowcs_path(wpathname, pathname) < 0) |
368 | return -1; | |
4f288100 | 369 | |
85faec9d | 370 | while ((ret = _wrmdir(wpathname)) == -1 && tries < ARRAY_SIZE(delay)) { |
4f288100 | 371 | if (!is_file_in_use_error(GetLastError())) |
a83b2b57 EFL |
372 | errno = err_win_to_posix(GetLastError()); |
373 | if (errno != EACCES) | |
4f288100 | 374 | break; |
85faec9d | 375 | if (!is_dir_empty(wpathname)) { |
ab1a11be JS |
376 | errno = ENOTEMPTY; |
377 | break; | |
378 | } | |
4f288100 HV |
379 | /* |
380 | * We assume that some other process had the source or | |
381 | * destination file open at the wrong moment and retry. | |
382 | * In order to give the other process a higher chance to | |
383 | * complete its operation, we give up our time slice now. | |
384 | * If we have to retry again, we do sleep a bit. | |
385 | */ | |
386 | Sleep(delay[tries]); | |
387 | tries++; | |
388 | } | |
a83b2b57 | 389 | while (ret == -1 && errno == EACCES && is_file_in_use_error(GetLastError()) && |
4f288100 HV |
390 | ask_yes_no_if_possible("Deletion of directory '%s' failed. " |
391 | "Should I try again?", pathname)) | |
85faec9d | 392 | ret = _wrmdir(wpathname); |
684dd4c2 MT |
393 | if (!ret) |
394 | invalidate_lstat_cache(); | |
85faec9d KB |
395 | return ret; |
396 | } | |
397 | ||
f30afdab JS |
398 | static inline int needs_hiding(const char *path) |
399 | { | |
400 | const char *basename; | |
401 | ||
402 | if (hide_dotfiles == HIDE_DOTFILES_FALSE) | |
403 | return 0; | |
404 | ||
405 | /* We cannot use basename(), as it would remove trailing slashes */ | |
1cadad6f | 406 | win32_skip_dos_drive_prefix((char **)&path); |
f30afdab JS |
407 | if (!*path) |
408 | return 0; | |
409 | ||
410 | for (basename = path; *path; path++) | |
411 | if (is_dir_sep(*path)) { | |
412 | do { | |
413 | path++; | |
414 | } while (is_dir_sep(*path)); | |
415 | /* ignore trailing slashes */ | |
416 | if (*path) | |
417 | basename = path; | |
60e6569a JS |
418 | else |
419 | break; | |
f30afdab JS |
420 | } |
421 | ||
422 | if (hide_dotfiles == HIDE_DOTFILES_TRUE) | |
423 | return *basename == '.'; | |
424 | ||
425 | assert(hide_dotfiles == HIDE_DOTFILES_DOTGITONLY); | |
426 | return !strncasecmp(".git", basename, 4) && | |
427 | (!basename[4] || is_dir_sep(basename[4])); | |
428 | } | |
429 | ||
430 | static int set_hidden_flag(const wchar_t *path, int set) | |
431 | { | |
432 | DWORD original = GetFileAttributesW(path), modified; | |
433 | if (set) | |
434 | modified = original | FILE_ATTRIBUTE_HIDDEN; | |
435 | else | |
436 | modified = original & ~FILE_ATTRIBUTE_HIDDEN; | |
437 | if (original == modified || SetFileAttributesW(path, modified)) | |
438 | return 0; | |
439 | errno = err_win_to_posix(GetLastError()); | |
440 | return -1; | |
441 | } | |
442 | ||
85faec9d KB |
443 | int mingw_mkdir(const char *path, int mode) |
444 | { | |
445 | int ret; | |
446 | wchar_t wpath[MAX_PATH]; | |
d2c84dad | 447 | |
4dc42c6c | 448 | if (!is_valid_win32_path(path, 0)) { |
d2c84dad JS |
449 | errno = EINVAL; |
450 | return -1; | |
451 | } | |
452 | ||
85faec9d KB |
453 | if (xutftowcs_path(wpath, path) < 0) |
454 | return -1; | |
455 | ret = _wmkdir(wpath); | |
f30afdab JS |
456 | if (!ret && needs_hiding(path)) |
457 | return set_hidden_flag(wpath, 1); | |
4f288100 HV |
458 | return ret; |
459 | } | |
460 | ||
eeaf7dda JH |
461 | /* |
462 | * Calling CreateFile() using FILE_APPEND_DATA and without FILE_WRITE_DATA | |
463 | * is documented in [1] as opening a writable file handle in append mode. | |
464 | * (It is believed that) this is atomic since it is maintained by the | |
465 | * kernel unlike the O_APPEND flag which is racily maintained by the CRT. | |
466 | * | |
467 | * [1] https://docs.microsoft.com/en-us/windows/desktop/fileio/file-access-rights-constants | |
468 | * | |
469 | * This trick does not appear to work for named pipes. Instead it creates | |
470 | * a named pipe client handle that cannot be written to. Callers should | |
471 | * just use the regular _wopen() for them. (And since client handle gets | |
472 | * bound to a unique server handle, it isn't really an issue.) | |
473 | */ | |
d6410975 JS |
474 | static int mingw_open_append(wchar_t const *wfilename, int oflags, ...) |
475 | { | |
476 | HANDLE handle; | |
477 | int fd; | |
478 | DWORD create = (oflags & O_CREAT) ? OPEN_ALWAYS : OPEN_EXISTING; | |
479 | ||
480 | /* only these flags are supported */ | |
481 | if ((oflags & ~O_CREAT) != (O_WRONLY | O_APPEND)) | |
482 | return errno = ENOSYS, -1; | |
483 | ||
484 | /* | |
485 | * FILE_SHARE_WRITE is required to permit child processes | |
486 | * to append to the file. | |
487 | */ | |
488 | handle = CreateFileW(wfilename, FILE_APPEND_DATA, | |
489 | FILE_SHARE_WRITE | FILE_SHARE_READ, | |
490 | NULL, create, FILE_ATTRIBUTE_NORMAL, NULL); | |
23eafd92 NS |
491 | if (handle == INVALID_HANDLE_VALUE) { |
492 | DWORD err = GetLastError(); | |
493 | ||
494 | /* | |
495 | * Some network storage solutions (e.g. Isilon) might return | |
496 | * ERROR_INVALID_PARAMETER instead of expected error | |
497 | * ERROR_PATH_NOT_FOUND, which results in an unknown error. If | |
498 | * so, let's turn the error to ERROR_PATH_NOT_FOUND instead. | |
499 | */ | |
500 | if (err == ERROR_INVALID_PARAMETER) | |
501 | err = ERROR_PATH_NOT_FOUND; | |
502 | ||
503 | errno = err_win_to_posix(err); | |
504 | return -1; | |
505 | } | |
eeaf7dda | 506 | |
d6410975 JS |
507 | /* |
508 | * No O_APPEND here, because the CRT uses it only to reset the | |
eeaf7dda JH |
509 | * file pointer to EOF before each write(); but that is not |
510 | * necessary (and may lead to races) for a file created with | |
511 | * FILE_APPEND_DATA. | |
d6410975 JS |
512 | */ |
513 | fd = _open_osfhandle((intptr_t)handle, O_BINARY); | |
514 | if (fd < 0) | |
515 | CloseHandle(handle); | |
516 | return fd; | |
517 | } | |
518 | ||
eeaf7dda JH |
519 | /* |
520 | * Does the pathname map to the local named pipe filesystem? | |
521 | * That is, does it have a "//./pipe/" prefix? | |
522 | */ | |
523 | static int is_local_named_pipe_path(const char *filename) | |
524 | { | |
525 | return (is_dir_sep(filename[0]) && | |
526 | is_dir_sep(filename[1]) && | |
527 | filename[2] == '.' && | |
528 | is_dir_sep(filename[3]) && | |
529 | !strncasecmp(filename+4, "pipe", 4) && | |
530 | is_dir_sep(filename[8]) && | |
531 | filename[9]); | |
532 | } | |
533 | ||
3e4a1ba0 JS |
534 | int mingw_open (const char *filename, int oflags, ...) |
535 | { | |
d6410975 | 536 | typedef int (*open_fn_t)(wchar_t const *wfilename, int oflags, ...); |
3e4a1ba0 JS |
537 | va_list args; |
538 | unsigned mode; | |
d2c84dad | 539 | int fd, create = (oflags & (O_CREAT | O_EXCL)) == (O_CREAT | O_EXCL); |
85faec9d | 540 | wchar_t wfilename[MAX_PATH]; |
d6410975 | 541 | open_fn_t open_fn; |
0d30ad71 | 542 | |
3e4a1ba0 JS |
543 | va_start(args, oflags); |
544 | mode = va_arg(args, int); | |
545 | va_end(args); | |
546 | ||
4dc42c6c | 547 | if (!is_valid_win32_path(filename, !create)) { |
d2c84dad JS |
548 | errno = create ? EINVAL : ENOENT; |
549 | return -1; | |
550 | } | |
551 | ||
eeaf7dda | 552 | if ((oflags & O_APPEND) && !is_local_named_pipe_path(filename)) |
d6410975 JS |
553 | open_fn = mingw_open_append; |
554 | else | |
555 | open_fn = _wopen; | |
556 | ||
98d9b23e JS |
557 | if (filename && !strcmp(filename, "/dev/null")) |
558 | wcscpy(wfilename, L"nul"); | |
559 | else if (xutftowcs_path(wfilename, filename) < 0) | |
85faec9d | 560 | return -1; |
98d9b23e | 561 | |
d6410975 | 562 | fd = open_fn(wfilename, oflags, mode); |
0d30ad71 | 563 | |
ba6fad02 | 564 | if (fd < 0 && (oflags & O_ACCMODE) != O_RDONLY && errno == EACCES) { |
85faec9d | 565 | DWORD attrs = GetFileAttributesW(wfilename); |
3e4a1ba0 JS |
566 | if (attrs != INVALID_FILE_ATTRIBUTES && (attrs & FILE_ATTRIBUTE_DIRECTORY)) |
567 | errno = EISDIR; | |
568 | } | |
f30afdab JS |
569 | if ((oflags & O_CREAT) && needs_hiding(filename)) { |
570 | /* | |
571 | * Internally, _wopen() uses the CreateFile() API which errors | |
572 | * out with an ERROR_ACCESS_DENIED if CREATE_ALWAYS was | |
573 | * specified and an already existing file's attributes do not | |
574 | * match *exactly*. As there is no mode or flag we can set that | |
575 | * would correspond to FILE_ATTRIBUTE_HIDDEN, let's just try | |
576 | * again *without* the O_CREAT flag (that corresponds to the | |
577 | * CREATE_ALWAYS flag of CreateFile()). | |
578 | */ | |
579 | if (fd < 0 && errno == EACCES) | |
d6410975 | 580 | fd = open_fn(wfilename, oflags & ~O_CREAT, mode); |
f30afdab JS |
581 | if (fd >= 0 && set_hidden_flag(wfilename, 1)) |
582 | warning("could not mark '%s' as hidden.", filename); | |
583 | } | |
3e4a1ba0 JS |
584 | return fd; |
585 | } | |
586 | ||
176478a8 EFL |
587 | static BOOL WINAPI ctrl_ignore(DWORD type) |
588 | { | |
589 | return TRUE; | |
590 | } | |
591 | ||
592 | #undef fgetc | |
593 | int mingw_fgetc(FILE *stream) | |
594 | { | |
595 | int ch; | |
596 | if (!isatty(_fileno(stream))) | |
597 | return fgetc(stream); | |
598 | ||
599 | SetConsoleCtrlHandler(ctrl_ignore, TRUE); | |
600 | while (1) { | |
601 | ch = fgetc(stream); | |
602 | if (ch != EOF || GetLastError() != ERROR_OPERATION_ABORTED) | |
603 | break; | |
604 | ||
605 | /* Ctrl+C was pressed, simulate SIGINT and retry */ | |
606 | mingw_raise(SIGINT); | |
607 | } | |
608 | SetConsoleCtrlHandler(ctrl_ignore, FALSE); | |
609 | return ch; | |
610 | } | |
611 | ||
3fdcdbdf JS |
612 | #undef fopen |
613 | FILE *mingw_fopen (const char *filename, const char *otype) | |
614 | { | |
f30afdab | 615 | int hide = needs_hiding(filename); |
85faec9d KB |
616 | FILE *file; |
617 | wchar_t wfilename[MAX_PATH], wotype[4]; | |
4dc42c6c JS |
618 | if (filename && !strcmp(filename, "/dev/null")) |
619 | wcscpy(wfilename, L"nul"); | |
620 | else if (!is_valid_win32_path(filename, 1)) { | |
d2c84dad JS |
621 | int create = otype && strchr(otype, 'w'); |
622 | errno = create ? EINVAL : ENOENT; | |
623 | return NULL; | |
4dc42c6c | 624 | } else if (xutftowcs_path(wfilename, filename) < 0) |
85faec9d | 625 | return NULL; |
98d9b23e JS |
626 | |
627 | if (xutftowcs(wotype, otype, ARRAY_SIZE(wotype)) < 0) | |
85faec9d | 628 | return NULL; |
98d9b23e | 629 | |
f30afdab JS |
630 | if (hide && !access(filename, F_OK) && set_hidden_flag(wfilename, 0)) { |
631 | error("could not unhide %s", filename); | |
632 | return NULL; | |
633 | } | |
85faec9d | 634 | file = _wfopen(wfilename, wotype); |
e5b31344 JS |
635 | if (!file && GetLastError() == ERROR_INVALID_NAME) |
636 | errno = ENOENT; | |
f30afdab JS |
637 | if (file && hide && set_hidden_flag(wfilename, 1)) |
638 | warning("could not mark '%s' as hidden.", filename); | |
85faec9d | 639 | return file; |
3fdcdbdf JS |
640 | } |
641 | ||
3fdcdbdf JS |
642 | FILE *mingw_freopen (const char *filename, const char *otype, FILE *stream) |
643 | { | |
f30afdab | 644 | int hide = needs_hiding(filename); |
85faec9d KB |
645 | FILE *file; |
646 | wchar_t wfilename[MAX_PATH], wotype[4]; | |
4dc42c6c JS |
647 | if (filename && !strcmp(filename, "/dev/null")) |
648 | wcscpy(wfilename, L"nul"); | |
649 | else if (!is_valid_win32_path(filename, 1)) { | |
d2c84dad JS |
650 | int create = otype && strchr(otype, 'w'); |
651 | errno = create ? EINVAL : ENOENT; | |
652 | return NULL; | |
4dc42c6c | 653 | } else if (xutftowcs_path(wfilename, filename) < 0) |
85faec9d | 654 | return NULL; |
98d9b23e JS |
655 | |
656 | if (xutftowcs(wotype, otype, ARRAY_SIZE(wotype)) < 0) | |
85faec9d | 657 | return NULL; |
98d9b23e | 658 | |
f30afdab JS |
659 | if (hide && !access(filename, F_OK) && set_hidden_flag(wfilename, 0)) { |
660 | error("could not unhide %s", filename); | |
661 | return NULL; | |
662 | } | |
85faec9d | 663 | file = _wfreopen(wfilename, wotype, stream); |
f30afdab JS |
664 | if (file && hide && set_hidden_flag(wfilename, 1)) |
665 | warning("could not mark '%s' as hidden.", filename); | |
85faec9d | 666 | return file; |
3fdcdbdf JS |
667 | } |
668 | ||
84adb641 JS |
669 | #undef fflush |
670 | int mingw_fflush(FILE *stream) | |
671 | { | |
672 | int ret = fflush(stream); | |
673 | ||
674 | /* | |
675 | * write() is used behind the scenes of stdio output functions. | |
676 | * Since git code does not check for errors after each stdio write | |
677 | * operation, it can happen that write() is called by a later | |
678 | * stdio function even if an earlier write() call failed. In the | |
679 | * case of a pipe whose readable end was closed, only the first | |
680 | * call to write() reports EPIPE on Windows. Subsequent write() | |
681 | * calls report EINVAL. It is impossible to notice whether this | |
682 | * fflush invocation triggered such a case, therefore, we have to | |
683 | * catch all EINVAL errors whole-sale. | |
684 | */ | |
685 | if (ret && errno == EINVAL) | |
686 | errno = EPIPE; | |
687 | ||
688 | return ret; | |
689 | } | |
690 | ||
2b86292e JS |
691 | #undef write |
692 | ssize_t mingw_write(int fd, const void *buf, size_t len) | |
693 | { | |
694 | ssize_t result = write(fd, buf, len); | |
695 | ||
696 | if (result < 0 && errno == EINVAL && buf) { | |
697 | /* check if fd is a pipe */ | |
698 | HANDLE h = (HANDLE) _get_osfhandle(fd); | |
699 | if (GetFileType(h) == FILE_TYPE_PIPE) | |
700 | errno = EPIPE; | |
701 | else | |
702 | errno = EINVAL; | |
703 | } | |
704 | ||
705 | return result; | |
706 | } | |
707 | ||
85faec9d KB |
708 | int mingw_access(const char *filename, int mode) |
709 | { | |
710 | wchar_t wfilename[MAX_PATH]; | |
9160068a JS |
711 | if (!strcmp("nul", filename) || !strcmp("/dev/null", filename)) |
712 | return 0; | |
85faec9d KB |
713 | if (xutftowcs_path(wfilename, filename) < 0) |
714 | return -1; | |
715 | /* X_OK is not supported by the MSVCRT version */ | |
716 | return _waccess(wfilename, mode & ~X_OK); | |
717 | } | |
718 | ||
719 | int mingw_chdir(const char *dirname) | |
720 | { | |
721 | wchar_t wdirname[MAX_PATH]; | |
722 | if (xutftowcs_path(wdirname, dirname) < 0) | |
723 | return -1; | |
724 | return _wchdir(wdirname); | |
725 | } | |
726 | ||
727 | int mingw_chmod(const char *filename, int mode) | |
728 | { | |
729 | wchar_t wfilename[MAX_PATH]; | |
730 | if (xutftowcs_path(wfilename, filename) < 0) | |
731 | return -1; | |
732 | return _wchmod(wfilename, mode); | |
733 | } | |
734 | ||
a6d15bc3 JS |
735 | /* |
736 | * The unit of FILETIME is 100-nanoseconds since January 1, 1601, UTC. | |
737 | * Returns the 100-nanoseconds ("hekto nanoseconds") since the epoch. | |
738 | */ | |
739 | static inline long long filetime_to_hnsec(const FILETIME *ft) | |
5411bdc4 MSO |
740 | { |
741 | long long winTime = ((long long)ft->dwHighDateTime << 32) + ft->dwLowDateTime; | |
a6d15bc3 JS |
742 | /* Windows to Unix Epoch conversion */ |
743 | return winTime - 116444736000000000LL; | |
744 | } | |
745 | ||
d7e8c874 | 746 | static inline void filetime_to_timespec(const FILETIME *ft, struct timespec *ts) |
a6d15bc3 | 747 | { |
d7e8c874 KB |
748 | long long hnsec = filetime_to_hnsec(ft); |
749 | ts->tv_sec = (time_t)(hnsec / 10000000); | |
750 | ts->tv_nsec = (hnsec % 10000000) * 100; | |
5411bdc4 MSO |
751 | } |
752 | ||
4b0abd5c JS |
753 | /** |
754 | * Verifies that safe_create_leading_directories() would succeed. | |
755 | */ | |
756 | static int has_valid_directory_prefix(wchar_t *wfilename) | |
757 | { | |
758 | int n = wcslen(wfilename); | |
759 | ||
760 | while (n > 0) { | |
761 | wchar_t c = wfilename[--n]; | |
762 | DWORD attributes; | |
763 | ||
764 | if (!is_dir_sep(c)) | |
765 | continue; | |
766 | ||
767 | wfilename[n] = L'\0'; | |
768 | attributes = GetFileAttributesW(wfilename); | |
769 | wfilename[n] = c; | |
770 | if (attributes == FILE_ATTRIBUTE_DIRECTORY || | |
771 | attributes == FILE_ATTRIBUTE_DEVICE) | |
772 | return 1; | |
773 | if (attributes == INVALID_FILE_ATTRIBUTES) | |
774 | switch (GetLastError()) { | |
775 | case ERROR_PATH_NOT_FOUND: | |
776 | continue; | |
777 | case ERROR_FILE_NOT_FOUND: | |
778 | /* This implies parent directory exists. */ | |
779 | return 1; | |
780 | } | |
781 | return 0; | |
782 | } | |
783 | return 1; | |
784 | } | |
785 | ||
5411bdc4 MSO |
786 | /* We keep the do_lstat code in a separate function to avoid recursion. |
787 | * When a path ends with a slash, the stat will fail with ENOENT. In | |
788 | * this case, we strip the trailing slashes and stat again. | |
9b9784ca PT |
789 | * |
790 | * If follow is true then act like stat() and report on the link | |
791 | * target. Otherwise report on the link itself. | |
5411bdc4 | 792 | */ |
9b9784ca | 793 | static int do_lstat(int follow, const char *file_name, struct stat *buf) |
5411bdc4 MSO |
794 | { |
795 | WIN32_FILE_ATTRIBUTE_DATA fdata; | |
85faec9d KB |
796 | wchar_t wfilename[MAX_PATH]; |
797 | if (xutftowcs_path(wfilename, file_name) < 0) | |
798 | return -1; | |
5411bdc4 | 799 | |
85faec9d | 800 | if (GetFileAttributesExW(wfilename, GetFileExInfoStandard, &fdata)) { |
5411bdc4 MSO |
801 | buf->st_ino = 0; |
802 | buf->st_gid = 0; | |
803 | buf->st_uid = 0; | |
180964f0 | 804 | buf->st_nlink = 1; |
444dc903 | 805 | buf->st_mode = file_attr_to_st_mode(fdata.dwFileAttributes); |
1d4e4cd4 JS |
806 | buf->st_size = fdata.nFileSizeLow | |
807 | (((off_t)fdata.nFileSizeHigh)<<32); | |
8252df62 | 808 | buf->st_dev = buf->st_rdev = 0; /* not used by Git */ |
d7e8c874 KB |
809 | filetime_to_timespec(&(fdata.ftLastAccessTime), &(buf->st_atim)); |
810 | filetime_to_timespec(&(fdata.ftLastWriteTime), &(buf->st_mtim)); | |
811 | filetime_to_timespec(&(fdata.ftCreationTime), &(buf->st_ctim)); | |
9b9784ca | 812 | if (fdata.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) { |
85faec9d KB |
813 | WIN32_FIND_DATAW findbuf; |
814 | HANDLE handle = FindFirstFileW(wfilename, &findbuf); | |
9b9784ca PT |
815 | if (handle != INVALID_HANDLE_VALUE) { |
816 | if ((findbuf.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) && | |
817 | (findbuf.dwReserved0 == IO_REPARSE_TAG_SYMLINK)) { | |
818 | if (follow) { | |
819 | char buffer[MAXIMUM_REPARSE_DATA_BUFFER_SIZE]; | |
820 | buf->st_size = readlink(file_name, buffer, MAXIMUM_REPARSE_DATA_BUFFER_SIZE); | |
821 | } else { | |
822 | buf->st_mode = S_IFLNK; | |
823 | } | |
824 | buf->st_mode |= S_IREAD; | |
825 | if (!(findbuf.dwFileAttributes & FILE_ATTRIBUTE_READONLY)) | |
826 | buf->st_mode |= S_IWRITE; | |
827 | } | |
828 | FindClose(handle); | |
829 | } | |
830 | } | |
5411bdc4 MSO |
831 | return 0; |
832 | } | |
85faec9d KB |
833 | switch (GetLastError()) { |
834 | case ERROR_ACCESS_DENIED: | |
835 | case ERROR_SHARING_VIOLATION: | |
836 | case ERROR_LOCK_VIOLATION: | |
837 | case ERROR_SHARING_BUFFER_EXCEEDED: | |
838 | errno = EACCES; | |
839 | break; | |
840 | case ERROR_BUFFER_OVERFLOW: | |
841 | errno = ENAMETOOLONG; | |
842 | break; | |
843 | case ERROR_NOT_ENOUGH_MEMORY: | |
844 | errno = ENOMEM; | |
845 | break; | |
4b0abd5c JS |
846 | case ERROR_PATH_NOT_FOUND: |
847 | if (!has_valid_directory_prefix(wfilename)) { | |
848 | errno = ENOTDIR; | |
849 | break; | |
850 | } | |
851 | /* fallthru */ | |
85faec9d KB |
852 | default: |
853 | errno = ENOENT; | |
854 | break; | |
855 | } | |
5411bdc4 MSO |
856 | return -1; |
857 | } | |
858 | ||
859 | /* We provide our own lstat/fstat functions, since the provided | |
860 | * lstat/fstat functions are so slow. These stat functions are | |
861 | * tailored for Git's usage (read: fast), and are not meant to be | |
862 | * complete. Note that Git stat()s are redirected to mingw_lstat() | |
863 | * too, since Windows doesn't really handle symlinks that well. | |
864 | */ | |
9b9784ca | 865 | static int do_stat_internal(int follow, const char *file_name, struct stat *buf) |
5411bdc4 MSO |
866 | { |
867 | int namelen; | |
58aa3d2a | 868 | char alt_name[PATH_MAX]; |
5411bdc4 | 869 | |
9b9784ca | 870 | if (!do_lstat(follow, file_name, buf)) |
5411bdc4 MSO |
871 | return 0; |
872 | ||
873 | /* if file_name ended in a '/', Windows returned ENOENT; | |
874 | * try again without trailing slashes | |
875 | */ | |
876 | if (errno != ENOENT) | |
877 | return -1; | |
878 | ||
879 | namelen = strlen(file_name); | |
880 | if (namelen && file_name[namelen-1] != '/') | |
881 | return -1; | |
882 | while (namelen && file_name[namelen-1] == '/') | |
883 | --namelen; | |
884 | if (!namelen || namelen >= PATH_MAX) | |
885 | return -1; | |
886 | ||
887 | memcpy(alt_name, file_name, namelen); | |
888 | alt_name[namelen] = 0; | |
9b9784ca PT |
889 | return do_lstat(follow, alt_name, buf); |
890 | } | |
891 | ||
7bf19838 JS |
892 | static int get_file_info_by_handle(HANDLE hnd, struct stat *buf) |
893 | { | |
894 | BY_HANDLE_FILE_INFORMATION fdata; | |
895 | ||
896 | if (!GetFileInformationByHandle(hnd, &fdata)) { | |
897 | errno = err_win_to_posix(GetLastError()); | |
898 | return -1; | |
899 | } | |
900 | ||
901 | buf->st_ino = 0; | |
902 | buf->st_gid = 0; | |
903 | buf->st_uid = 0; | |
904 | buf->st_nlink = 1; | |
905 | buf->st_mode = file_attr_to_st_mode(fdata.dwFileAttributes); | |
906 | buf->st_size = fdata.nFileSizeLow | | |
907 | (((off_t)fdata.nFileSizeHigh)<<32); | |
908 | buf->st_dev = buf->st_rdev = 0; /* not used by Git */ | |
d7e8c874 KB |
909 | filetime_to_timespec(&(fdata.ftLastAccessTime), &(buf->st_atim)); |
910 | filetime_to_timespec(&(fdata.ftLastWriteTime), &(buf->st_mtim)); | |
911 | filetime_to_timespec(&(fdata.ftCreationTime), &(buf->st_ctim)); | |
7bf19838 JS |
912 | return 0; |
913 | } | |
914 | ||
9b9784ca PT |
915 | int mingw_lstat(const char *file_name, struct stat *buf) |
916 | { | |
917 | return do_stat_internal(0, file_name, buf); | |
918 | } | |
919 | int mingw_stat(const char *file_name, struct stat *buf) | |
920 | { | |
921 | return do_stat_internal(1, file_name, buf); | |
5411bdc4 MSO |
922 | } |
923 | ||
180964f0 | 924 | int mingw_fstat(int fd, struct stat *buf) |
5411bdc4 MSO |
925 | { |
926 | HANDLE fh = (HANDLE)_get_osfhandle(fd); | |
d75e6973 | 927 | DWORD avail, type = GetFileType(fh) & ~FILE_TYPE_REMOTE; |
5411bdc4 | 928 | |
d75e6973 KB |
929 | switch (type) { |
930 | case FILE_TYPE_DISK: | |
931 | return get_file_info_by_handle(fh, buf); | |
5411bdc4 | 932 | |
d75e6973 KB |
933 | case FILE_TYPE_CHAR: |
934 | case FILE_TYPE_PIPE: | |
935 | /* initialize stat fields */ | |
936 | memset(buf, 0, sizeof(*buf)); | |
180964f0 | 937 | buf->st_nlink = 1; |
d75e6973 KB |
938 | |
939 | if (type == FILE_TYPE_CHAR) { | |
940 | buf->st_mode = _S_IFCHR; | |
941 | } else { | |
942 | buf->st_mode = _S_IFIFO; | |
943 | if (PeekNamedPipe(fh, NULL, 0, NULL, &avail, NULL)) | |
944 | buf->st_size = avail; | |
945 | } | |
5411bdc4 | 946 | return 0; |
7bf19838 | 947 | |
d75e6973 KB |
948 | default: |
949 | errno = EBADF; | |
950 | return -1; | |
5411bdc4 | 951 | } |
5411bdc4 MSO |
952 | } |
953 | ||
7c0ffa1c JS |
954 | static inline void time_t_to_filetime(time_t t, FILETIME *ft) |
955 | { | |
956 | long long winTime = t * 10000000LL + 116444736000000000LL; | |
957 | ft->dwLowDateTime = winTime; | |
958 | ft->dwHighDateTime = winTime >> 32; | |
959 | } | |
960 | ||
961 | int mingw_utime (const char *file_name, const struct utimbuf *times) | |
962 | { | |
963 | FILETIME mft, aft; | |
964 | int fh, rc; | |
85faec9d KB |
965 | DWORD attrs; |
966 | wchar_t wfilename[MAX_PATH]; | |
967 | if (xutftowcs_path(wfilename, file_name) < 0) | |
968 | return -1; | |
7c0ffa1c JS |
969 | |
970 | /* must have write permission */ | |
85faec9d | 971 | attrs = GetFileAttributesW(wfilename); |
852f098c JS |
972 | if (attrs != INVALID_FILE_ATTRIBUTES && |
973 | (attrs & FILE_ATTRIBUTE_READONLY)) { | |
974 | /* ignore errors here; open() will report them */ | |
85faec9d | 975 | SetFileAttributesW(wfilename, attrs & ~FILE_ATTRIBUTE_READONLY); |
852f098c JS |
976 | } |
977 | ||
85faec9d | 978 | if ((fh = _wopen(wfilename, O_RDWR | O_BINARY)) < 0) { |
852f098c JS |
979 | rc = -1; |
980 | goto revert_attrs; | |
981 | } | |
7c0ffa1c | 982 | |
ded2d476 SG |
983 | if (times) { |
984 | time_t_to_filetime(times->modtime, &mft); | |
985 | time_t_to_filetime(times->actime, &aft); | |
986 | } else { | |
987 | GetSystemTimeAsFileTime(&mft); | |
988 | aft = mft; | |
989 | } | |
7c0ffa1c JS |
990 | if (!SetFileTime((HANDLE)_get_osfhandle(fh), NULL, &aft, &mft)) { |
991 | errno = EINVAL; | |
992 | rc = -1; | |
993 | } else | |
994 | rc = 0; | |
995 | close(fh); | |
852f098c JS |
996 | |
997 | revert_attrs: | |
998 | if (attrs != INVALID_FILE_ATTRIBUTES && | |
999 | (attrs & FILE_ATTRIBUTE_READONLY)) { | |
1000 | /* ignore errors again */ | |
85faec9d | 1001 | SetFileAttributesW(wfilename, attrs); |
852f098c | 1002 | } |
7c0ffa1c JS |
1003 | return rc; |
1004 | } | |
1005 | ||
9ee0540a JS |
1006 | #undef strftime |
1007 | size_t mingw_strftime(char *s, size_t max, | |
1008 | const char *format, const struct tm *tm) | |
1009 | { | |
a748f3f3 MA |
1010 | /* a pointer to the original strftime in case we can't find the UCRT version */ |
1011 | static size_t (*fallback)(char *, size_t, const char *, const struct tm *) = strftime; | |
1012 | size_t ret; | |
4a9b2049 | 1013 | DECLARE_PROC_ADDR(ucrtbase.dll, size_t, __cdecl, strftime, char *, size_t, |
a748f3f3 MA |
1014 | const char *, const struct tm *); |
1015 | ||
1016 | if (INIT_PROC_ADDR(strftime)) | |
1017 | ret = strftime(s, max, format, tm); | |
1018 | else | |
1019 | ret = fallback(s, max, format, tm); | |
9ee0540a JS |
1020 | |
1021 | if (!ret && errno == EINVAL) | |
1022 | die("invalid strftime format: '%s'", format); | |
1023 | return ret; | |
1024 | } | |
1025 | ||
f4626df5 JS |
1026 | unsigned int sleep (unsigned int seconds) |
1027 | { | |
1028 | Sleep(seconds*1000); | |
1029 | return 0; | |
1030 | } | |
1031 | ||
85faec9d KB |
1032 | char *mingw_mktemp(char *template) |
1033 | { | |
1034 | wchar_t wtemplate[MAX_PATH]; | |
1035 | if (xutftowcs_path(wtemplate, template) < 0) | |
1036 | return NULL; | |
1037 | if (!_wmktemp(wtemplate)) | |
1038 | return NULL; | |
1039 | if (xwcstoutf(template, wtemplate, strlen(template) + 1) < 0) | |
1040 | return NULL; | |
1041 | return template; | |
1042 | } | |
1043 | ||
f4626df5 JS |
1044 | int mkstemp(char *template) |
1045 | { | |
1046 | char *filename = mktemp(template); | |
1047 | if (filename == NULL) | |
1048 | return -1; | |
1049 | return open(filename, O_RDWR | O_CREAT, 0600); | |
1050 | } | |
1051 | ||
1052 | int gettimeofday(struct timeval *tv, void *tz) | |
1053 | { | |
a6d15bc3 JS |
1054 | FILETIME ft; |
1055 | long long hnsec; | |
1056 | ||
1057 | GetSystemTimeAsFileTime(&ft); | |
1058 | hnsec = filetime_to_hnsec(&ft); | |
1059 | tv->tv_sec = hnsec / 10000000; | |
1060 | tv->tv_usec = (hnsec % 10000000) / 10; | |
a42a0c2e | 1061 | return 0; |
f4626df5 JS |
1062 | } |
1063 | ||
897bb8cb JS |
1064 | int pipe(int filedes[2]) |
1065 | { | |
3e34d665 | 1066 | HANDLE h[2]; |
897bb8cb | 1067 | |
3e34d665 JS |
1068 | /* this creates non-inheritable handles */ |
1069 | if (!CreatePipe(&h[0], &h[1], NULL, 8192)) { | |
1070 | errno = err_win_to_posix(GetLastError()); | |
897bb8cb JS |
1071 | return -1; |
1072 | } | |
7c00bc39 | 1073 | filedes[0] = _open_osfhandle(HCAST(int, h[0]), O_NOINHERIT); |
3e34d665 | 1074 | if (filedes[0] < 0) { |
897bb8cb JS |
1075 | CloseHandle(h[0]); |
1076 | CloseHandle(h[1]); | |
1077 | return -1; | |
1078 | } | |
7c00bc39 | 1079 | filedes[1] = _open_osfhandle(HCAST(int, h[1]), O_NOINHERIT); |
c3cb7b6f | 1080 | if (filedes[1] < 0) { |
897bb8cb | 1081 | close(filedes[0]); |
897bb8cb JS |
1082 | CloseHandle(h[1]); |
1083 | return -1; | |
1084 | } | |
897bb8cb JS |
1085 | return 0; |
1086 | } | |
1087 | ||
f4626df5 JS |
1088 | struct tm *gmtime_r(const time_t *timep, struct tm *result) |
1089 | { | |
0109d676 ĐTCD |
1090 | if (gmtime_s(result, timep) == 0) |
1091 | return result; | |
1092 | return NULL; | |
f4626df5 JS |
1093 | } |
1094 | ||
1095 | struct tm *localtime_r(const time_t *timep, struct tm *result) | |
1096 | { | |
0109d676 ĐTCD |
1097 | if (localtime_s(result, timep) == 0) |
1098 | return result; | |
1099 | return NULL; | |
f4626df5 JS |
1100 | } |
1101 | ||
25fe217b JS |
1102 | char *mingw_getcwd(char *pointer, int len) |
1103 | { | |
937974fc JS |
1104 | wchar_t cwd[MAX_PATH], wpointer[MAX_PATH]; |
1105 | DWORD ret = GetCurrentDirectoryW(ARRAY_SIZE(cwd), cwd); | |
1106 | ||
1107 | if (!ret || ret >= ARRAY_SIZE(cwd)) { | |
1108 | errno = ret ? ENAMETOOLONG : err_win_to_posix(GetLastError()); | |
1109 | return NULL; | |
1110 | } | |
1111 | ret = GetLongPathNameW(cwd, wpointer, ARRAY_SIZE(wpointer)); | |
4745feeb AS |
1112 | if (!ret && GetLastError() == ERROR_ACCESS_DENIED) { |
1113 | HANDLE hnd = CreateFileW(cwd, 0, | |
1114 | FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, NULL, | |
1115 | OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL); | |
1116 | if (hnd == INVALID_HANDLE_VALUE) | |
1117 | return NULL; | |
1118 | ret = GetFinalPathNameByHandleW(hnd, wpointer, ARRAY_SIZE(wpointer), 0); | |
1119 | CloseHandle(hnd); | |
1120 | if (!ret || ret >= ARRAY_SIZE(wpointer)) | |
1121 | return NULL; | |
1122 | if (xwcstoutf(pointer, normalize_ntpath(wpointer), len) < 0) | |
1123 | return NULL; | |
1124 | return pointer; | |
1125 | } | |
937974fc | 1126 | if (!ret || ret >= ARRAY_SIZE(wpointer)) |
85faec9d KB |
1127 | return NULL; |
1128 | if (xwcstoutf(pointer, wpointer, len) < 0) | |
1129 | return NULL; | |
8e9b2080 | 1130 | convert_slashes(pointer); |
85faec9d | 1131 | return pointer; |
25fe217b JS |
1132 | } |
1133 | ||
7e5d7768 | 1134 | /* |
2ef2ae29 JS |
1135 | * See "Parsing C++ Command-Line Arguments" at Microsoft's Docs: |
1136 | * https://docs.microsoft.com/en-us/cpp/cpp/parsing-cpp-command-line-arguments | |
7e5d7768 | 1137 | */ |
9e9da23c | 1138 | static const char *quote_arg_msvc(const char *arg) |
7e5d7768 JS |
1139 | { |
1140 | /* count chars to quote */ | |
1141 | int len = 0, n = 0; | |
1142 | int force_quotes = 0; | |
1143 | char *q, *d; | |
1144 | const char *p = arg; | |
1145 | if (!*p) force_quotes = 1; | |
1146 | while (*p) { | |
3aea1a5a | 1147 | if (isspace(*p) || *p == '*' || *p == '?' || *p == '{' || *p == '\'') |
7e5d7768 JS |
1148 | force_quotes = 1; |
1149 | else if (*p == '"') | |
1150 | n++; | |
1151 | else if (*p == '\\') { | |
1152 | int count = 0; | |
1153 | while (*p == '\\') { | |
1154 | count++; | |
1155 | p++; | |
1156 | len++; | |
1157 | } | |
6d868416 | 1158 | if (*p == '"' || !*p) |
7e5d7768 JS |
1159 | n += count*2 + 1; |
1160 | continue; | |
1161 | } | |
1162 | len++; | |
1163 | p++; | |
1164 | } | |
1165 | if (!force_quotes && n == 0) | |
1166 | return arg; | |
1167 | ||
1168 | /* insert \ where necessary */ | |
50a6c8ef | 1169 | d = q = xmalloc(st_add3(len, n, 3)); |
7e5d7768 JS |
1170 | *d++ = '"'; |
1171 | while (*arg) { | |
1172 | if (*arg == '"') | |
1173 | *d++ = '\\'; | |
1174 | else if (*arg == '\\') { | |
1175 | int count = 0; | |
1176 | while (*arg == '\\') { | |
1177 | count++; | |
1178 | *d++ = *arg++; | |
1179 | } | |
6d868416 | 1180 | if (*arg == '"' || !*arg) { |
7e5d7768 JS |
1181 | while (count-- > 0) |
1182 | *d++ = '\\'; | |
6d868416 JS |
1183 | /* don't escape the surrounding end quote */ |
1184 | if (!*arg) | |
1185 | break; | |
7e5d7768 JS |
1186 | *d++ = '\\'; |
1187 | } | |
1188 | } | |
1189 | *d++ = *arg++; | |
1190 | } | |
1191 | *d++ = '"'; | |
6d868416 | 1192 | *d++ = '\0'; |
7e5d7768 JS |
1193 | return q; |
1194 | } | |
1195 | ||
9e9da23c JS |
1196 | #include "quote.h" |
1197 | ||
1198 | static const char *quote_arg_msys2(const char *arg) | |
1199 | { | |
1200 | struct strbuf buf = STRBUF_INIT; | |
1201 | const char *p2 = arg, *p; | |
1202 | ||
1203 | for (p = arg; *p; p++) { | |
1204 | int ws = isspace(*p); | |
7d8b6769 JS |
1205 | if (!ws && *p != '\\' && *p != '"' && *p != '{' && *p != '\'' && |
1206 | *p != '?' && *p != '*' && *p != '~') | |
9e9da23c JS |
1207 | continue; |
1208 | if (!buf.len) | |
1209 | strbuf_addch(&buf, '"'); | |
1210 | if (p != p2) | |
1211 | strbuf_add(&buf, p2, p - p2); | |
7d8b6769 | 1212 | if (*p == '\\' || *p == '"') |
9e9da23c JS |
1213 | strbuf_addch(&buf, '\\'); |
1214 | p2 = p; | |
1215 | } | |
1216 | ||
1217 | if (p == arg) | |
1218 | strbuf_addch(&buf, '"'); | |
1219 | else if (!buf.len) | |
1220 | return arg; | |
1221 | else | |
04522edb | 1222 | strbuf_add(&buf, p2, p - p2); |
9e9da23c JS |
1223 | |
1224 | strbuf_addch(&buf, '"'); | |
1225 | return strbuf_detach(&buf, 0); | |
1226 | } | |
1227 | ||
f1a4dfb8 JS |
1228 | static const char *parse_interpreter(const char *cmd) |
1229 | { | |
1230 | static char buf[100]; | |
1231 | char *p, *opt; | |
1232 | int n, fd; | |
1233 | ||
1234 | /* don't even try a .exe */ | |
1235 | n = strlen(cmd); | |
1236 | if (n >= 4 && !strcasecmp(cmd+n-4, ".exe")) | |
1237 | return NULL; | |
1238 | ||
1239 | fd = open(cmd, O_RDONLY); | |
1240 | if (fd < 0) | |
1241 | return NULL; | |
1242 | n = read(fd, buf, sizeof(buf)-1); | |
1243 | close(fd); | |
1244 | if (n < 4) /* at least '#!/x' and not error */ | |
1245 | return NULL; | |
1246 | ||
1247 | if (buf[0] != '#' || buf[1] != '!') | |
1248 | return NULL; | |
1249 | buf[n] = '\0'; | |
bedc4279 PH |
1250 | p = buf + strcspn(buf, "\r\n"); |
1251 | if (!*p) | |
f1a4dfb8 JS |
1252 | return NULL; |
1253 | ||
1254 | *p = '\0'; | |
1255 | if (!(p = strrchr(buf+2, '/')) && !(p = strrchr(buf+2, '\\'))) | |
1256 | return NULL; | |
1257 | /* strip options */ | |
1258 | if ((opt = strchr(p+1, ' '))) | |
1259 | *opt = '\0'; | |
1260 | return p+1; | |
1261 | } | |
1262 | ||
f1a4dfb8 JS |
1263 | /* |
1264 | * exe_only means that we only want to detect .exe files, but not scripts | |
1265 | * (which do not have an extension) | |
1266 | */ | |
e0ca1ca2 RS |
1267 | static char *lookup_prog(const char *dir, int dirlen, const char *cmd, |
1268 | int isexe, int exe_only) | |
f1a4dfb8 JS |
1269 | { |
1270 | char path[MAX_PATH]; | |
4e1a641e | 1271 | wchar_t wpath[MAX_PATH]; |
e0ca1ca2 | 1272 | snprintf(path, sizeof(path), "%.*s\\%s.exe", dirlen, dir, cmd); |
f1a4dfb8 | 1273 | |
4e1a641e AR |
1274 | if (xutftowcs_path(wpath, path) < 0) |
1275 | return NULL; | |
1276 | ||
1277 | if (!isexe && _waccess(wpath, F_OK) == 0) | |
f1a4dfb8 | 1278 | return xstrdup(path); |
4e1a641e AR |
1279 | wpath[wcslen(wpath)-4] = '\0'; |
1280 | if ((!exe_only || isexe) && _waccess(wpath, F_OK) == 0) { | |
1281 | if (!(GetFileAttributesW(wpath) & FILE_ATTRIBUTE_DIRECTORY)) { | |
1282 | path[strlen(path)-4] = '\0'; | |
fe77b695 | 1283 | return xstrdup(path); |
4e1a641e AR |
1284 | } |
1285 | } | |
f1a4dfb8 JS |
1286 | return NULL; |
1287 | } | |
1288 | ||
1289 | /* | |
22e5e58a | 1290 | * Determines the absolute path of cmd using the split path in path. |
f1a4dfb8 JS |
1291 | * If cmd contains a slash or backslash, no lookup is performed. |
1292 | */ | |
e0ca1ca2 | 1293 | static char *path_lookup(const char *cmd, int exe_only) |
f1a4dfb8 | 1294 | { |
e0ca1ca2 | 1295 | const char *path; |
f1a4dfb8 JS |
1296 | char *prog = NULL; |
1297 | int len = strlen(cmd); | |
1298 | int isexe = len >= 4 && !strcasecmp(cmd+len-4, ".exe"); | |
1299 | ||
2ce6d075 | 1300 | if (strpbrk(cmd, "/\\")) |
e0ca1ca2 RS |
1301 | return xstrdup(cmd); |
1302 | ||
1303 | path = mingw_getenv("PATH"); | |
1304 | if (!path) | |
1305 | return NULL; | |
f1a4dfb8 | 1306 | |
e0ca1ca2 RS |
1307 | while (!prog) { |
1308 | const char *sep = strchrnul(path, ';'); | |
1309 | int dirlen = sep - path; | |
1310 | if (dirlen) | |
1311 | prog = lookup_prog(path, dirlen, cmd, isexe, exe_only); | |
1312 | if (!*sep) | |
1313 | break; | |
1314 | path = sep + 1; | |
1315 | } | |
f1a4dfb8 JS |
1316 | |
1317 | return prog; | |
1318 | } | |
1319 | ||
fe21c6b2 JS |
1320 | static const wchar_t *wcschrnul(const wchar_t *s, wchar_t c) |
1321 | { | |
1322 | while (*s && *s != c) | |
1323 | s++; | |
1324 | return s; | |
1325 | } | |
1326 | ||
1327 | /* Compare only keys */ | |
1328 | static int wenvcmp(const void *a, const void *b) | |
1329 | { | |
1330 | wchar_t *p = *(wchar_t **)a, *q = *(wchar_t **)b; | |
1331 | size_t p_len, q_len; | |
1332 | ||
1333 | /* Find the keys */ | |
1334 | p_len = wcschrnul(p, L'=') - p; | |
1335 | q_len = wcschrnul(q, L'=') - q; | |
f279242d | 1336 | |
fe21c6b2 JS |
1337 | /* If the length differs, include the shorter key's NUL */ |
1338 | if (p_len < q_len) | |
1339 | p_len++; | |
1340 | else if (p_len > q_len) | |
1341 | p_len = q_len + 1; | |
1342 | ||
1343 | return _wcsnicmp(p, q, p_len); | |
1344 | } | |
f279242d | 1345 | |
df0e998c | 1346 | /* |
fe21c6b2 JS |
1347 | * Build an environment block combining the inherited environment |
1348 | * merged with the given list of settings. | |
1349 | * | |
1350 | * Values of the form "KEY=VALUE" in deltaenv override inherited values. | |
1351 | * Values of the form "KEY" in deltaenv delete inherited values. | |
1352 | * | |
1353 | * Multiple entries in deltaenv for the same key are explicitly allowed. | |
1354 | * | |
1355 | * We return a contiguous block of UNICODE strings with a final trailing | |
1356 | * zero word. | |
df0e998c | 1357 | */ |
77734da2 | 1358 | static wchar_t *make_environment_block(char **deltaenv) |
7e5d7768 | 1359 | { |
fe21c6b2 JS |
1360 | wchar_t *wenv = GetEnvironmentStringsW(), *wdeltaenv, *result, *p; |
1361 | size_t wlen, s, delta_size, size; | |
df0e998c | 1362 | |
fe21c6b2 JS |
1363 | wchar_t **array = NULL; |
1364 | size_t alloc = 0, nr = 0, i; | |
df0e998c | 1365 | |
fe21c6b2 JS |
1366 | size = 1; /* for extra NUL at the end */ |
1367 | ||
1368 | /* If there is no deltaenv to apply, simply return a copy. */ | |
1369 | if (!deltaenv || !*deltaenv) { | |
1370 | for (p = wenv; p && *p; ) { | |
1371 | size_t s = wcslen(p) + 1; | |
1372 | size += s; | |
1373 | p += s; | |
1374 | } | |
77734da2 | 1375 | |
fe21c6b2 | 1376 | ALLOC_ARRAY(result, size); |
552fc501 | 1377 | COPY_ARRAY(result, wenv, size); |
fe21c6b2 JS |
1378 | FreeEnvironmentStringsW(wenv); |
1379 | return result; | |
1380 | } | |
77734da2 | 1381 | |
fe21c6b2 JS |
1382 | /* |
1383 | * If there is a deltaenv, let's accumulate all keys into `array`, | |
97fff610 JS |
1384 | * sort them using the stable git_stable_qsort() and then copy, |
1385 | * skipping duplicate keys | |
fe21c6b2 JS |
1386 | */ |
1387 | for (p = wenv; p && *p; ) { | |
1388 | ALLOC_GROW(array, nr + 1, alloc); | |
1389 | s = wcslen(p) + 1; | |
1390 | array[nr++] = p; | |
1391 | p += s; | |
1392 | size += s; | |
df0e998c | 1393 | } |
fe21c6b2 JS |
1394 | |
1395 | /* (over-)assess size needed for wchar version of deltaenv */ | |
1396 | for (delta_size = 0, i = 0; deltaenv[i]; i++) | |
1397 | delta_size += strlen(deltaenv[i]) * 2 + 1; | |
1398 | ALLOC_ARRAY(wdeltaenv, delta_size); | |
1399 | ||
1400 | /* convert the deltaenv, appending to array */ | |
1401 | for (i = 0, p = wdeltaenv; deltaenv[i]; i++) { | |
1402 | ALLOC_GROW(array, nr + 1, alloc); | |
1403 | wlen = xutftowcs(p, deltaenv[i], wdeltaenv + delta_size - p); | |
1404 | array[nr++] = p; | |
1405 | p += wlen + 1; | |
1406 | } | |
df0e998c | 1407 | |
97fff610 | 1408 | git_stable_qsort(array, nr, sizeof(*array), wenvcmp); |
fe21c6b2 | 1409 | ALLOC_ARRAY(result, size + delta_size); |
df0e998c | 1410 | |
fe21c6b2 JS |
1411 | for (p = result, i = 0; i < nr; i++) { |
1412 | /* Skip any duplicate keys; last one wins */ | |
1413 | while (i + 1 < nr && !wenvcmp(array + i, array + i + 1)) | |
1414 | i++; | |
77734da2 | 1415 | |
fe21c6b2 JS |
1416 | /* Skip "to delete" entry */ |
1417 | if (!wcschr(array[i], L'=')) | |
1418 | continue; | |
77734da2 | 1419 | |
fe21c6b2 | 1420 | size = wcslen(array[i]) + 1; |
552fc501 | 1421 | COPY_ARRAY(p, array[i], size); |
fe21c6b2 | 1422 | p += size; |
df0e998c | 1423 | } |
fe21c6b2 JS |
1424 | *p = L'\0'; |
1425 | ||
1426 | free(array); | |
1427 | free(wdeltaenv); | |
1428 | FreeEnvironmentStringsW(wenv); | |
1429 | return result; | |
7e5d7768 JS |
1430 | } |
1431 | ||
0e218f91 JS |
1432 | static void do_unset_environment_variables(void) |
1433 | { | |
1434 | static int done; | |
1435 | char *p = unset_environment_variables; | |
1436 | ||
1437 | if (done || !p) | |
1438 | return; | |
1439 | done = 1; | |
1440 | ||
1441 | for (;;) { | |
1442 | char *comma = strchr(p, ','); | |
1443 | ||
1444 | if (comma) | |
1445 | *comma = '\0'; | |
1446 | unsetenv(p); | |
1447 | if (!comma) | |
1448 | break; | |
1449 | p = comma + 1; | |
1450 | } | |
1451 | } | |
1452 | ||
52de4db5 EFL |
1453 | struct pinfo_t { |
1454 | struct pinfo_t *next; | |
1455 | pid_t pid; | |
1456 | HANDLE proc; | |
657b35f4 RJ |
1457 | }; |
1458 | static struct pinfo_t *pinfo = NULL; | |
52de4db5 EFL |
1459 | CRITICAL_SECTION pinfo_cs; |
1460 | ||
9e9da23c JS |
1461 | /* Used to match and chomp off path components */ |
1462 | static inline int match_last_path_component(const char *path, size_t *len, | |
1463 | const char *component) | |
1464 | { | |
1465 | size_t component_len = strlen(component); | |
1466 | if (*len < component_len + 1 || | |
1467 | !is_dir_sep(path[*len - component_len - 1]) || | |
1468 | fspathncmp(path + *len - component_len, component, component_len)) | |
1469 | return 0; | |
1470 | *len -= component_len + 1; | |
1471 | /* chomp off repeated dir separators */ | |
1472 | while (*len > 0 && is_dir_sep(path[*len - 1])) | |
1473 | (*len)--; | |
1474 | return 1; | |
1475 | } | |
1476 | ||
1477 | static int is_msys2_sh(const char *cmd) | |
1478 | { | |
e2ba3d6f JS |
1479 | if (!cmd) |
1480 | return 0; | |
1481 | ||
1482 | if (!strcmp(cmd, "sh")) { | |
9e9da23c JS |
1483 | static int ret = -1; |
1484 | char *p; | |
1485 | ||
1486 | if (ret >= 0) | |
1487 | return ret; | |
1488 | ||
1489 | p = path_lookup(cmd, 0); | |
1490 | if (!p) | |
1491 | ret = 0; | |
1492 | else { | |
1493 | size_t len = strlen(p); | |
1494 | ||
1495 | ret = match_last_path_component(p, &len, "sh.exe") && | |
1496 | match_last_path_component(p, &len, "bin") && | |
1497 | match_last_path_component(p, &len, "usr"); | |
1498 | free(p); | |
1499 | } | |
1500 | return ret; | |
1501 | } | |
e2ba3d6f JS |
1502 | |
1503 | if (ends_with(cmd, "\\sh.exe")) { | |
1504 | static char *sh; | |
1505 | ||
1506 | if (!sh) | |
1507 | sh = path_lookup("sh", 0); | |
1508 | ||
1509 | return !fspathcmp(cmd, sh); | |
1510 | } | |
1511 | ||
9e9da23c JS |
1512 | return 0; |
1513 | } | |
1514 | ||
77734da2 | 1515 | static pid_t mingw_spawnve_fd(const char *cmd, const char **argv, char **deltaenv, |
f9a2743c | 1516 | const char *dir, |
75301f90 | 1517 | int prepend_cmd, int fhin, int fhout, int fherr) |
7e5d7768 | 1518 | { |
ac33519d | 1519 | static int restrict_handle_inheritance = -1; |
9a780a38 | 1520 | STARTUPINFOEXW si; |
7e5d7768 | 1521 | PROCESS_INFORMATION pi; |
9a780a38 JS |
1522 | LPPROC_THREAD_ATTRIBUTE_LIST attr_list = NULL; |
1523 | HANDLE stdhandles[3]; | |
1524 | DWORD stdhandles_count = 0; | |
1525 | SIZE_T size; | |
7eb2619c KB |
1526 | struct strbuf args; |
1527 | wchar_t wcmd[MAX_PATH], wdir[MAX_PATH], *wargs, *wenvblk = NULL; | |
1528 | unsigned flags = CREATE_UNICODE_ENVIRONMENT; | |
7e5d7768 | 1529 | BOOL ret; |
0e218f91 | 1530 | HANDLE cons; |
9e9da23c | 1531 | const char *(*quote_arg)(const char *arg) = |
49f7a76d JS |
1532 | is_msys2_sh(cmd ? cmd : *argv) ? |
1533 | quote_arg_msys2 : quote_arg_msvc; | |
3efc128c | 1534 | const char *strace_env; |
0e218f91 | 1535 | |
4d0375ca JS |
1536 | /* Make sure to override previous errors, if any */ |
1537 | errno = 0; | |
1538 | ||
ac33519d JS |
1539 | if (restrict_handle_inheritance < 0) |
1540 | restrict_handle_inheritance = core_restrict_inherited_handles; | |
1541 | /* | |
1542 | * The following code to restrict which handles are inherited seems | |
1543 | * to work properly only on Windows 7 and later, so let's disable it | |
1544 | * on Windows Vista and 2008. | |
1545 | */ | |
1546 | if (restrict_handle_inheritance < 0) | |
1547 | restrict_handle_inheritance = GetVersion() >> 16 >= 7601; | |
1548 | ||
0e218f91 | 1549 | do_unset_environment_variables(); |
7e5d7768 JS |
1550 | |
1551 | /* Determine whether or not we are associated to a console */ | |
94238859 | 1552 | cons = CreateFileW(L"CONOUT$", GENERIC_WRITE, |
7e5d7768 JS |
1553 | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, |
1554 | FILE_ATTRIBUTE_NORMAL, NULL); | |
1555 | if (cons == INVALID_HANDLE_VALUE) { | |
1556 | /* There is no console associated with this process. | |
1557 | * Since the child is a console process, Windows | |
1558 | * would normally create a console window. But | |
1559 | * since we'll be redirecting std streams, we do | |
1560 | * not need the console. | |
19fb896f AG |
1561 | * It is necessary to use DETACHED_PROCESS |
1562 | * instead of CREATE_NO_WINDOW to make ssh | |
1563 | * recognize that it has no console. | |
7e5d7768 | 1564 | */ |
7eb2619c | 1565 | flags |= DETACHED_PROCESS; |
7e5d7768 JS |
1566 | } else { |
1567 | /* There is already a console. If we specified | |
19fb896f | 1568 | * DETACHED_PROCESS here, too, Windows would |
7e5d7768 | 1569 | * disassociate the child from the console. |
19fb896f | 1570 | * The same is true for CREATE_NO_WINDOW. |
7e5d7768 JS |
1571 | * Go figure! |
1572 | */ | |
7e5d7768 JS |
1573 | CloseHandle(cons); |
1574 | } | |
1575 | memset(&si, 0, sizeof(si)); | |
9a780a38 JS |
1576 | si.StartupInfo.cb = sizeof(si); |
1577 | si.StartupInfo.hStdInput = winansi_get_osfhandle(fhin); | |
1578 | si.StartupInfo.hStdOutput = winansi_get_osfhandle(fhout); | |
1579 | si.StartupInfo.hStdError = winansi_get_osfhandle(fherr); | |
1580 | ||
1581 | /* The list of handles cannot contain duplicates */ | |
1582 | if (si.StartupInfo.hStdInput != INVALID_HANDLE_VALUE) | |
1583 | stdhandles[stdhandles_count++] = si.StartupInfo.hStdInput; | |
1584 | if (si.StartupInfo.hStdOutput != INVALID_HANDLE_VALUE && | |
1585 | si.StartupInfo.hStdOutput != si.StartupInfo.hStdInput) | |
1586 | stdhandles[stdhandles_count++] = si.StartupInfo.hStdOutput; | |
1587 | if (si.StartupInfo.hStdError != INVALID_HANDLE_VALUE && | |
1588 | si.StartupInfo.hStdError != si.StartupInfo.hStdInput && | |
1589 | si.StartupInfo.hStdError != si.StartupInfo.hStdOutput) | |
1590 | stdhandles[stdhandles_count++] = si.StartupInfo.hStdError; | |
1591 | if (stdhandles_count) | |
1592 | si.StartupInfo.dwFlags |= STARTF_USESTDHANDLES; | |
7e5d7768 | 1593 | |
eb7c7863 JS |
1594 | if (*argv && !strcmp(cmd, *argv)) |
1595 | wcmd[0] = L'\0'; | |
1596 | else if (xutftowcs_path(wcmd, cmd) < 0) | |
99c3c76d KB |
1597 | return -1; |
1598 | if (dir && xutftowcs_path(wdir, dir) < 0) | |
1599 | return -1; | |
1600 | ||
7e5d7768 JS |
1601 | /* concatenate argv, quoting args as we go */ |
1602 | strbuf_init(&args, 0); | |
1603 | if (prepend_cmd) { | |
1604 | char *quoted = (char *)quote_arg(cmd); | |
1605 | strbuf_addstr(&args, quoted); | |
1606 | if (quoted != cmd) | |
1607 | free(quoted); | |
1608 | } | |
1609 | for (; *argv; argv++) { | |
1610 | char *quoted = (char *)quote_arg(*argv); | |
1611 | if (*args.buf) | |
1612 | strbuf_addch(&args, ' '); | |
1613 | strbuf_addstr(&args, quoted); | |
1614 | if (quoted != *argv) | |
1615 | free(quoted); | |
1616 | } | |
1617 | ||
3efc128c JS |
1618 | strace_env = getenv("GIT_STRACE_COMMANDS"); |
1619 | if (strace_env) { | |
1620 | char *p = path_lookup("strace.exe", 1); | |
1621 | if (!p) | |
1622 | return error("strace not found!"); | |
1623 | if (xutftowcs_path(wcmd, p) < 0) { | |
1624 | free(p); | |
1625 | return -1; | |
1626 | } | |
1627 | free(p); | |
1628 | if (!strcmp("1", strace_env) || | |
1629 | !strcasecmp("yes", strace_env) || | |
1630 | !strcasecmp("true", strace_env)) | |
1631 | strbuf_insert(&args, 0, "strace ", 7); | |
1632 | else { | |
1633 | const char *quoted = quote_arg(strace_env); | |
1634 | struct strbuf buf = STRBUF_INIT; | |
1635 | strbuf_addf(&buf, "strace -o %s ", quoted); | |
1636 | if (quoted != strace_env) | |
1637 | free((char *)quoted); | |
1638 | strbuf_insert(&args, 0, buf.buf, buf.len); | |
1639 | strbuf_release(&buf); | |
1640 | } | |
1641 | } | |
1642 | ||
8d5b3325 | 1643 | ALLOC_ARRAY(wargs, st_add(st_mult(2, args.len), 1)); |
99c3c76d KB |
1644 | xutftowcs(wargs, args.buf, 2 * args.len + 1); |
1645 | strbuf_release(&args); | |
1646 | ||
77734da2 | 1647 | wenvblk = make_environment_block(deltaenv); |
7e5d7768 JS |
1648 | |
1649 | memset(&pi, 0, sizeof(pi)); | |
9a780a38 JS |
1650 | if (restrict_handle_inheritance && stdhandles_count && |
1651 | (InitializeProcThreadAttributeList(NULL, 1, 0, &size) || | |
1652 | GetLastError() == ERROR_INSUFFICIENT_BUFFER) && | |
1653 | (attr_list = (LPPROC_THREAD_ATTRIBUTE_LIST) | |
1654 | (HeapAlloc(GetProcessHeap(), 0, size))) && | |
1655 | InitializeProcThreadAttributeList(attr_list, 1, 0, &size) && | |
1656 | UpdateProcThreadAttribute(attr_list, 0, | |
1657 | PROC_THREAD_ATTRIBUTE_HANDLE_LIST, | |
1658 | stdhandles, | |
1659 | stdhandles_count * sizeof(HANDLE), | |
1660 | NULL, NULL)) { | |
1661 | si.lpAttributeList = attr_list; | |
1662 | flags |= EXTENDED_STARTUPINFO_PRESENT; | |
1663 | } | |
1664 | ||
1665 | ret = CreateProcessW(*wcmd ? wcmd : NULL, wargs, NULL, NULL, | |
1666 | stdhandles_count ? TRUE : FALSE, | |
1667 | flags, wenvblk, dir ? wdir : NULL, | |
1668 | &si.StartupInfo, &pi); | |
1669 | ||
1670 | /* | |
1671 | * On Windows 2008 R2, it seems that specifying certain types of handles | |
1672 | * (such as FILE_TYPE_CHAR or FILE_TYPE_PIPE) will always produce an | |
1673 | * error. Rather than playing finicky and fragile games, let's just try | |
1674 | * to detect this situation and simply try again without restricting any | |
1675 | * handle inheritance. This is still better than failing to create | |
1676 | * processes. | |
1677 | */ | |
1678 | if (!ret && restrict_handle_inheritance && stdhandles_count) { | |
1679 | DWORD err = GetLastError(); | |
1680 | struct strbuf buf = STRBUF_INIT; | |
1681 | ||
1682 | if (err != ERROR_NO_SYSTEM_RESOURCES && | |
1683 | /* | |
1684 | * On Windows 7 and earlier, handles on pipes and character | |
1685 | * devices are inherited automatically, and cannot be | |
1686 | * specified in the thread handle list. Rather than trying | |
1687 | * to catch each and every corner case (and running the | |
1688 | * chance of *still* forgetting a few), let's just fall | |
1689 | * back to creating the process without trying to limit the | |
1690 | * handle inheritance. | |
1691 | */ | |
1692 | !(err == ERROR_INVALID_PARAMETER && | |
1693 | GetVersion() >> 16 < 9200) && | |
1694 | !getenv("SUPPRESS_HANDLE_INHERITANCE_WARNING")) { | |
1695 | DWORD fl = 0; | |
1696 | int i; | |
1697 | ||
1698 | setenv("SUPPRESS_HANDLE_INHERITANCE_WARNING", "1", 1); | |
1699 | ||
1700 | for (i = 0; i < stdhandles_count; i++) { | |
1701 | HANDLE h = stdhandles[i]; | |
1702 | strbuf_addf(&buf, "handle #%d: %p (type %lx, " | |
1703 | "handle info (%d) %lx\n", i, h, | |
1704 | GetFileType(h), | |
1705 | GetHandleInformation(h, &fl), | |
1706 | fl); | |
1707 | } | |
1708 | strbuf_addstr(&buf, "\nThis is a bug; please report it " | |
1709 | "at\nhttps://github.com/git-for-windows/" | |
1710 | "git/issues/new\n\n" | |
1711 | "To suppress this warning, please set " | |
1712 | "the environment variable\n\n" | |
1713 | "\tSUPPRESS_HANDLE_INHERITANCE_WARNING=1" | |
1714 | "\n"); | |
1715 | } | |
1716 | restrict_handle_inheritance = 0; | |
1717 | flags &= ~EXTENDED_STARTUPINFO_PRESENT; | |
1718 | ret = CreateProcessW(*wcmd ? wcmd : NULL, wargs, NULL, NULL, | |
1719 | TRUE, flags, wenvblk, dir ? wdir : NULL, | |
1720 | &si.StartupInfo, &pi); | |
4d0375ca | 1721 | if (!ret) |
9a780a38 | 1722 | errno = err_win_to_posix(GetLastError()); |
4d0375ca | 1723 | if (ret && buf.len) { |
9a780a38 JS |
1724 | warning("failed to restrict file handles (%ld)\n\n%s", |
1725 | err, buf.buf); | |
1726 | } | |
1727 | strbuf_release(&buf); | |
1728 | } else if (!ret) | |
1729 | errno = err_win_to_posix(GetLastError()); | |
1730 | ||
1731 | if (si.lpAttributeList) | |
1732 | DeleteProcThreadAttributeList(si.lpAttributeList); | |
1733 | if (attr_list) | |
1734 | HeapFree(GetProcessHeap(), 0, attr_list); | |
7e5d7768 | 1735 | |
7eb2619c | 1736 | free(wenvblk); |
99c3c76d | 1737 | free(wargs); |
7e5d7768 | 1738 | |
9a780a38 | 1739 | if (!ret) |
7e5d7768 | 1740 | return -1; |
9a780a38 | 1741 | |
7e5d7768 | 1742 | CloseHandle(pi.hThread); |
52de4db5 EFL |
1743 | |
1744 | /* | |
1745 | * The process ID is the human-readable identifier of the process | |
1746 | * that we want to present in log and error messages. The handle | |
1747 | * is not useful for this purpose. But we cannot close it, either, | |
1748 | * because it is not possible to turn a process ID into a process | |
1749 | * handle after the process terminated. | |
1750 | * Keep the handle in a list for waitpid. | |
1751 | */ | |
1752 | EnterCriticalSection(&pinfo_cs); | |
1753 | { | |
1754 | struct pinfo_t *info = xmalloc(sizeof(struct pinfo_t)); | |
1755 | info->pid = pi.dwProcessId; | |
1756 | info->proc = pi.hProcess; | |
1757 | info->next = pinfo; | |
1758 | pinfo = info; | |
1759 | } | |
1760 | LeaveCriticalSection(&pinfo_cs); | |
1761 | ||
1762 | return (pid_t)pi.dwProcessId; | |
7e5d7768 JS |
1763 | } |
1764 | ||
3e66e47b | 1765 | static pid_t mingw_spawnv(const char *cmd, const char **argv, int prepend_cmd) |
75301f90 | 1766 | { |
77734da2 | 1767 | return mingw_spawnve_fd(cmd, argv, NULL, NULL, prepend_cmd, 0, 1, 2); |
75301f90 JS |
1768 | } |
1769 | ||
77734da2 | 1770 | pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **deltaenv, |
f9a2743c | 1771 | const char *dir, |
75301f90 | 1772 | int fhin, int fhout, int fherr) |
7e5d7768 JS |
1773 | { |
1774 | pid_t pid; | |
e0ca1ca2 | 1775 | char *prog = path_lookup(cmd, 0); |
7e5d7768 JS |
1776 | |
1777 | if (!prog) { | |
1778 | errno = ENOENT; | |
1779 | pid = -1; | |
1780 | } | |
1781 | else { | |
1782 | const char *interpr = parse_interpreter(prog); | |
1783 | ||
1784 | if (interpr) { | |
1785 | const char *argv0 = argv[0]; | |
e0ca1ca2 | 1786 | char *iprog = path_lookup(interpr, 1); |
7e5d7768 JS |
1787 | argv[0] = prog; |
1788 | if (!iprog) { | |
1789 | errno = ENOENT; | |
1790 | pid = -1; | |
1791 | } | |
1792 | else { | |
77734da2 | 1793 | pid = mingw_spawnve_fd(iprog, argv, deltaenv, dir, 1, |
75301f90 | 1794 | fhin, fhout, fherr); |
7e5d7768 JS |
1795 | free(iprog); |
1796 | } | |
1797 | argv[0] = argv0; | |
1798 | } | |
1799 | else | |
77734da2 | 1800 | pid = mingw_spawnve_fd(prog, argv, deltaenv, dir, 0, |
75301f90 | 1801 | fhin, fhout, fherr); |
7e5d7768 JS |
1802 | free(prog); |
1803 | } | |
7e5d7768 JS |
1804 | return pid; |
1805 | } | |
1806 | ||
3e66e47b | 1807 | static int try_shell_exec(const char *cmd, char *const *argv) |
f1a4dfb8 JS |
1808 | { |
1809 | const char *interpr = parse_interpreter(cmd); | |
f1a4dfb8 JS |
1810 | char *prog; |
1811 | int pid = 0; | |
1812 | ||
1813 | if (!interpr) | |
1814 | return 0; | |
e0ca1ca2 | 1815 | prog = path_lookup(interpr, 1); |
f1a4dfb8 | 1816 | if (prog) { |
ee4512ed | 1817 | int exec_id; |
f1a4dfb8 | 1818 | int argc = 0; |
12fb9bd8 JH |
1819 | #ifndef _MSC_VER |
1820 | const | |
1821 | #endif | |
1822 | char **argv2; | |
f1a4dfb8 | 1823 | while (argv[argc]) argc++; |
b32fa95f | 1824 | ALLOC_ARRAY(argv2, argc + 1); |
7e5d7768 | 1825 | argv2[0] = (char *)cmd; /* full path to the script file */ |
51bd6be3 | 1826 | COPY_ARRAY(&argv2[1], &argv[1], argc); |
ee4512ed | 1827 | exec_id = trace2_exec(prog, argv2); |
3e66e47b | 1828 | pid = mingw_spawnv(prog, argv2, 1); |
f1a4dfb8 JS |
1829 | if (pid >= 0) { |
1830 | int status; | |
1831 | if (waitpid(pid, &status, 0) < 0) | |
1832 | status = 255; | |
ee4512ed | 1833 | trace2_exec_result(exec_id, status); |
f1a4dfb8 JS |
1834 | exit(status); |
1835 | } | |
ee4512ed | 1836 | trace2_exec_result(exec_id, -1); |
f1a4dfb8 JS |
1837 | pid = 1; /* indicate that we tried but failed */ |
1838 | free(prog); | |
1839 | free(argv2); | |
1840 | } | |
f1a4dfb8 JS |
1841 | return pid; |
1842 | } | |
1843 | ||
3e66e47b | 1844 | int mingw_execv(const char *cmd, char *const *argv) |
f1a4dfb8 JS |
1845 | { |
1846 | /* check if git_command is a shell script */ | |
3e66e47b | 1847 | if (!try_shell_exec(cmd, argv)) { |
f1a4dfb8 | 1848 | int pid, status; |
ee4512ed | 1849 | int exec_id; |
f1a4dfb8 | 1850 | |
ee4512ed | 1851 | exec_id = trace2_exec(cmd, (const char **)argv); |
3e66e47b | 1852 | pid = mingw_spawnv(cmd, (const char **)argv, 0); |
ee4512ed JH |
1853 | if (pid < 0) { |
1854 | trace2_exec_result(exec_id, -1); | |
570f1e6e | 1855 | return -1; |
ee4512ed | 1856 | } |
f1a4dfb8 JS |
1857 | if (waitpid(pid, &status, 0) < 0) |
1858 | status = 255; | |
ee4512ed | 1859 | trace2_exec_result(exec_id, status); |
f1a4dfb8 JS |
1860 | exit(status); |
1861 | } | |
570f1e6e | 1862 | return -1; |
f1a4dfb8 JS |
1863 | } |
1864 | ||
1696d723 | 1865 | int mingw_execvp(const char *cmd, char *const *argv) |
f1a4dfb8 | 1866 | { |
e0ca1ca2 | 1867 | char *prog = path_lookup(cmd, 0); |
f1a4dfb8 JS |
1868 | |
1869 | if (prog) { | |
3e66e47b | 1870 | mingw_execv(prog, argv); |
f1a4dfb8 JS |
1871 | free(prog); |
1872 | } else | |
1873 | errno = ENOENT; | |
1874 | ||
1696d723 | 1875 | return -1; |
f1a4dfb8 JS |
1876 | } |
1877 | ||
82fc07b7 EFL |
1878 | int mingw_kill(pid_t pid, int sig) |
1879 | { | |
1880 | if (pid > 0 && sig == SIGTERM) { | |
1881 | HANDLE h = OpenProcess(PROCESS_TERMINATE, FALSE, pid); | |
1882 | ||
1883 | if (TerminateProcess(h, -1)) { | |
1884 | CloseHandle(h); | |
1885 | return 0; | |
1886 | } | |
1887 | ||
1888 | errno = err_win_to_posix(GetLastError()); | |
1889 | CloseHandle(h); | |
1890 | return -1; | |
64a99eb4 NTND |
1891 | } else if (pid > 0 && sig == 0) { |
1892 | HANDLE h = OpenProcess(PROCESS_QUERY_INFORMATION, FALSE, pid); | |
1893 | if (h) { | |
1894 | CloseHandle(h); | |
1895 | return 0; | |
1896 | } | |
82fc07b7 EFL |
1897 | } |
1898 | ||
1899 | errno = EINVAL; | |
1900 | return -1; | |
1901 | } | |
1902 | ||
343ff06d | 1903 | /* |
fe21c6b2 JS |
1904 | * UTF-8 versions of getenv(), putenv() and unsetenv(). |
1905 | * Internally, they use the CRT's stock UNICODE routines | |
1906 | * to avoid data loss. | |
343ff06d | 1907 | */ |
fe21c6b2 | 1908 | char *mingw_getenv(const char *name) |
343ff06d | 1909 | { |
ca1b4116 | 1910 | #define GETENV_MAX_RETAIN 64 |
fe21c6b2 JS |
1911 | static char *values[GETENV_MAX_RETAIN]; |
1912 | static int value_counter; | |
1913 | int len_key, len_value; | |
1914 | wchar_t *w_key; | |
1915 | char *value; | |
1916 | wchar_t w_value[32768]; | |
343ff06d | 1917 | |
fe21c6b2 JS |
1918 | if (!name || !*name) |
1919 | return NULL; | |
ba26f296 | 1920 | |
fe21c6b2 JS |
1921 | len_key = strlen(name) + 1; |
1922 | /* We cannot use xcalloc() here because that uses getenv() itself */ | |
1923 | w_key = calloc(len_key, sizeof(wchar_t)); | |
1924 | if (!w_key) | |
1925 | die("Out of memory, (tried to allocate %u wchar_t's)", len_key); | |
1926 | xutftowcs(w_key, name, len_key); | |
61d1d92a JS |
1927 | /* GetEnvironmentVariableW() only sets the last error upon failure */ |
1928 | SetLastError(ERROR_SUCCESS); | |
fe21c6b2 JS |
1929 | len_value = GetEnvironmentVariableW(w_key, w_value, ARRAY_SIZE(w_value)); |
1930 | if (!len_value && GetLastError() == ERROR_ENVVAR_NOT_FOUND) { | |
1931 | free(w_key); | |
1932 | return NULL; | |
ba26f296 | 1933 | } |
fe21c6b2 JS |
1934 | free(w_key); |
1935 | ||
1936 | len_value = len_value * 3 + 1; | |
1937 | /* We cannot use xcalloc() here because that uses getenv() itself */ | |
1938 | value = calloc(len_value, sizeof(char)); | |
1939 | if (!value) | |
1940 | die("Out of memory, (tried to allocate %u bytes)", len_value); | |
1941 | xwcstoutf(value, w_value, len_value); | |
1942 | ||
1943 | /* | |
1944 | * We return `value` which is an allocated value and the caller is NOT | |
1945 | * expecting to have to free it, so we keep a round-robin array, | |
1946 | * invalidating the buffer after GETENV_MAX_RETAIN getenv() calls. | |
1947 | */ | |
1948 | free(values[value_counter]); | |
1949 | values[value_counter++] = value; | |
1950 | if (value_counter >= ARRAY_SIZE(values)) | |
1951 | value_counter = 0; | |
1952 | ||
1953 | return value; | |
ba26f296 JS |
1954 | } |
1955 | ||
fe21c6b2 | 1956 | int mingw_putenv(const char *namevalue) |
ba26f296 | 1957 | { |
fe21c6b2 JS |
1958 | int size; |
1959 | wchar_t *wide, *equal; | |
1960 | BOOL result; | |
ba26f296 | 1961 | |
fe21c6b2 JS |
1962 | if (!namevalue || !*namevalue) |
1963 | return 0; | |
ba26f296 | 1964 | |
fe21c6b2 JS |
1965 | size = strlen(namevalue) * 2 + 1; |
1966 | wide = calloc(size, sizeof(wchar_t)); | |
1967 | if (!wide) | |
1968 | die("Out of memory, (tried to allocate %u wchar_t's)", size); | |
1969 | xutftowcs(wide, namevalue, size); | |
1970 | equal = wcschr(wide, L'='); | |
1971 | if (!equal) | |
1972 | result = SetEnvironmentVariableW(wide, NULL); | |
1973 | else { | |
1974 | *equal = L'\0'; | |
1975 | result = SetEnvironmentVariableW(wide, equal + 1); | |
ba26f296 | 1976 | } |
fe21c6b2 | 1977 | free(wide); |
2affea41 | 1978 | |
fe21c6b2 JS |
1979 | if (!result) |
1980 | errno = err_win_to_posix(GetLastError()); | |
df599e96 | 1981 | |
fe21c6b2 | 1982 | return result ? 0 : -1; |
06bc4b79 JS |
1983 | } |
1984 | ||
b7cc9f82 | 1985 | static void ensure_socket_initialization(void) |
746fb857 JS |
1986 | { |
1987 | WSADATA wsa; | |
b7cc9f82 MS |
1988 | static int initialized = 0; |
1989 | ||
1990 | if (initialized) | |
1991 | return; | |
746fb857 JS |
1992 | |
1993 | if (WSAStartup(MAKEWORD(2,2), &wsa)) | |
1994 | die("unable to initialize winsock subsystem, error %d", | |
1995 | WSAGetLastError()); | |
fe3b2b7b | 1996 | |
b9f0193b | 1997 | atexit((void(*)(void)) WSACleanup); |
b7cc9f82 MS |
1998 | initialized = 1; |
1999 | } | |
2000 | ||
13d24b01 PT |
2001 | #undef gethostname |
2002 | int mingw_gethostname(char *name, int namelen) | |
2003 | { | |
2004 | ensure_socket_initialization(); | |
2005 | return gethostname(name, namelen); | |
2006 | } | |
2007 | ||
b7cc9f82 MS |
2008 | #undef gethostbyname |
2009 | struct hostent *mingw_gethostbyname(const char *host) | |
2010 | { | |
2011 | ensure_socket_initialization(); | |
746fb857 JS |
2012 | return gethostbyname(host); |
2013 | } | |
2014 | ||
b9f0193b | 2015 | #undef getaddrinfo |
fe3b2b7b MS |
2016 | int mingw_getaddrinfo(const char *node, const char *service, |
2017 | const struct addrinfo *hints, struct addrinfo **res) | |
2018 | { | |
2019 | ensure_socket_initialization(); | |
b9f0193b | 2020 | return getaddrinfo(node, service, hints, res); |
fe3b2b7b MS |
2021 | } |
2022 | ||
746fb857 JS |
2023 | int mingw_socket(int domain, int type, int protocol) |
2024 | { | |
2025 | int sockfd; | |
772991af MP |
2026 | SOCKET s; |
2027 | ||
2028 | ensure_socket_initialization(); | |
2029 | s = WSASocket(domain, type, protocol, NULL, 0, 0); | |
746fb857 JS |
2030 | if (s == INVALID_SOCKET) { |
2031 | /* | |
2032 | * WSAGetLastError() values are regular BSD error codes | |
2033 | * biased by WSABASEERR. | |
2034 | * However, strerror() does not know about networking | |
2035 | * specific errors, which are values beginning at 38 or so. | |
2036 | * Therefore, we choose to leave the biased error code | |
2037 | * in errno so that _if_ someone looks up the code somewhere, | |
2038 | * then it is at least the number that are usually listed. | |
2039 | */ | |
2040 | errno = WSAGetLastError(); | |
2041 | return -1; | |
2042 | } | |
2043 | /* convert into a file descriptor */ | |
2044 | if ((sockfd = _open_osfhandle(s, O_RDWR|O_BINARY)) < 0) { | |
2045 | closesocket(s); | |
2046 | return error("unable to make a socket file descriptor: %s", | |
2047 | strerror(errno)); | |
2048 | } | |
2049 | return sockfd; | |
2050 | } | |
2051 | ||
2052 | #undef connect | |
2053 | int mingw_connect(int sockfd, struct sockaddr *sa, size_t sz) | |
2054 | { | |
2055 | SOCKET s = (SOCKET)_get_osfhandle(sockfd); | |
2056 | return connect(s, sa, sz); | |
2057 | } | |
2058 | ||
772991af MP |
2059 | #undef bind |
2060 | int mingw_bind(int sockfd, struct sockaddr *sa, size_t sz) | |
2061 | { | |
2062 | SOCKET s = (SOCKET)_get_osfhandle(sockfd); | |
2063 | return bind(s, sa, sz); | |
2064 | } | |
2065 | ||
2066 | #undef setsockopt | |
2067 | int mingw_setsockopt(int sockfd, int lvl, int optname, void *optval, int optlen) | |
2068 | { | |
2069 | SOCKET s = (SOCKET)_get_osfhandle(sockfd); | |
2070 | return setsockopt(s, lvl, optname, (const char*)optval, optlen); | |
2071 | } | |
2072 | ||
a7941795 JS |
2073 | #undef shutdown |
2074 | int mingw_shutdown(int sockfd, int how) | |
2075 | { | |
2076 | SOCKET s = (SOCKET)_get_osfhandle(sockfd); | |
2077 | return shutdown(s, how); | |
2078 | } | |
2079 | ||
772991af MP |
2080 | #undef listen |
2081 | int mingw_listen(int sockfd, int backlog) | |
2082 | { | |
2083 | SOCKET s = (SOCKET)_get_osfhandle(sockfd); | |
2084 | return listen(s, backlog); | |
2085 | } | |
2086 | ||
2087 | #undef accept | |
2088 | int mingw_accept(int sockfd1, struct sockaddr *sa, socklen_t *sz) | |
2089 | { | |
2090 | int sockfd2; | |
2091 | ||
2092 | SOCKET s1 = (SOCKET)_get_osfhandle(sockfd1); | |
2093 | SOCKET s2 = accept(s1, sa, sz); | |
2094 | ||
2095 | /* convert into a file descriptor */ | |
2096 | if ((sockfd2 = _open_osfhandle(s2, O_RDWR|O_BINARY)) < 0) { | |
2097 | int err = errno; | |
2098 | closesocket(s2); | |
2099 | return error("unable to make a socket file descriptor: %s", | |
2100 | strerror(err)); | |
2101 | } | |
2102 | return sockfd2; | |
2103 | } | |
2104 | ||
ea9e98c3 JS |
2105 | #undef rename |
2106 | int mingw_rename(const char *pold, const char *pnew) | |
2107 | { | |
6ac6f878 JS |
2108 | DWORD attrs, gle; |
2109 | int tries = 0; | |
85faec9d KB |
2110 | wchar_t wpold[MAX_PATH], wpnew[MAX_PATH]; |
2111 | if (xutftowcs_path(wpold, pold) < 0 || xutftowcs_path(wpnew, pnew) < 0) | |
2112 | return -1; | |
632f7017 | 2113 | |
ea9e98c3 JS |
2114 | /* |
2115 | * Try native rename() first to get errno right. | |
2116 | * It is based on MoveFile(), which cannot overwrite existing files. | |
2117 | */ | |
85faec9d | 2118 | if (!_wrename(wpold, wpnew)) |
ea9e98c3 JS |
2119 | return 0; |
2120 | if (errno != EEXIST) | |
2121 | return -1; | |
6ac6f878 | 2122 | repeat: |
85faec9d | 2123 | if (MoveFileExW(wpold, wpnew, MOVEFILE_REPLACE_EXISTING)) |
ea9e98c3 JS |
2124 | return 0; |
2125 | /* TODO: translate more errors */ | |
6ac6f878 JS |
2126 | gle = GetLastError(); |
2127 | if (gle == ERROR_ACCESS_DENIED && | |
85faec9d | 2128 | (attrs = GetFileAttributesW(wpnew)) != INVALID_FILE_ATTRIBUTES) { |
632f7017 | 2129 | if (attrs & FILE_ATTRIBUTE_DIRECTORY) { |
4426fb51 | 2130 | DWORD attrsold = GetFileAttributesW(wpold); |
2131 | if (attrsold == INVALID_FILE_ATTRIBUTES || | |
2132 | !(attrsold & FILE_ATTRIBUTE_DIRECTORY)) | |
2133 | errno = EISDIR; | |
2134 | else if (!_wrmdir(wpnew)) | |
2135 | goto repeat; | |
ea9e98c3 JS |
2136 | return -1; |
2137 | } | |
632f7017 | 2138 | if ((attrs & FILE_ATTRIBUTE_READONLY) && |
85faec9d KB |
2139 | SetFileAttributesW(wpnew, attrs & ~FILE_ATTRIBUTE_READONLY)) { |
2140 | if (MoveFileExW(wpold, wpnew, MOVEFILE_REPLACE_EXISTING)) | |
632f7017 | 2141 | return 0; |
6ac6f878 | 2142 | gle = GetLastError(); |
632f7017 | 2143 | /* revert file attributes on failure */ |
85faec9d | 2144 | SetFileAttributesW(wpnew, attrs); |
632f7017 | 2145 | } |
ea9e98c3 | 2146 | } |
6ac6f878 JS |
2147 | if (tries < ARRAY_SIZE(delay) && gle == ERROR_ACCESS_DENIED) { |
2148 | /* | |
2149 | * We assume that some other process had the source or | |
2150 | * destination file open at the wrong moment and retry. | |
2151 | * In order to give the other process a higher chance to | |
2152 | * complete its operation, we give up our time slice now. | |
2153 | * If we have to retry again, we do sleep a bit. | |
2154 | */ | |
2155 | Sleep(delay[tries]); | |
2156 | tries++; | |
2157 | goto repeat; | |
2158 | } | |
c9b78400 HV |
2159 | if (gle == ERROR_ACCESS_DENIED && |
2160 | ask_yes_no_if_possible("Rename from '%s' to '%s' failed. " | |
2161 | "Should I try again?", pold, pnew)) | |
2162 | goto repeat; | |
2163 | ||
ea9e98c3 JS |
2164 | errno = EACCES; |
2165 | return -1; | |
2166 | } | |
2167 | ||
b1b95204 RJ |
2168 | /* |
2169 | * Note that this doesn't return the actual pagesize, but | |
2170 | * the allocation granularity. If future Windows specific git code | |
2171 | * needs the real getpagesize function, we need to find another solution. | |
2172 | */ | |
2173 | int mingw_getpagesize(void) | |
2174 | { | |
2175 | SYSTEM_INFO si; | |
2176 | GetSystemInfo(&si); | |
2177 | return si.dwAllocationGranularity; | |
2178 | } | |
2179 | ||
564be791 JS |
2180 | /* See https://msdn.microsoft.com/en-us/library/windows/desktop/ms724435.aspx */ |
2181 | enum EXTENDED_NAME_FORMAT { | |
2182 | NameDisplay = 3, | |
2183 | NameUserPrincipal = 8 | |
2184 | }; | |
2185 | ||
2186 | static char *get_extended_user_info(enum EXTENDED_NAME_FORMAT type) | |
2187 | { | |
4a9b2049 | 2188 | DECLARE_PROC_ADDR(secur32.dll, BOOL, SEC_ENTRY, GetUserNameExW, |
564be791 JS |
2189 | enum EXTENDED_NAME_FORMAT, LPCWSTR, PULONG); |
2190 | static wchar_t wbuffer[1024]; | |
2191 | DWORD len; | |
2192 | ||
2193 | if (!INIT_PROC_ADDR(GetUserNameExW)) | |
2194 | return NULL; | |
2195 | ||
2196 | len = ARRAY_SIZE(wbuffer); | |
2197 | if (GetUserNameExW(type, wbuffer, &len)) { | |
2198 | char *converted = xmalloc((len *= 3)); | |
2199 | if (xwcstoutf(converted, wbuffer, len) >= 0) | |
2200 | return converted; | |
2201 | free(converted); | |
2202 | } | |
2203 | ||
2204 | return NULL; | |
2205 | } | |
2206 | ||
501afcb8 JS |
2207 | char *mingw_query_user_email(void) |
2208 | { | |
2209 | return get_extended_user_info(NameUserPrincipal); | |
2210 | } | |
2211 | ||
f4626df5 JS |
2212 | struct passwd *getpwuid(int uid) |
2213 | { | |
55b6513e | 2214 | static unsigned initialized; |
f7597aca | 2215 | static char user_name[100]; |
55b6513e | 2216 | static struct passwd *p; |
39a98e9b | 2217 | wchar_t buf[100]; |
55b6513e | 2218 | DWORD len; |
f7597aca | 2219 | |
55b6513e JS |
2220 | if (initialized) |
2221 | return p; | |
f7597aca | 2222 | |
697bdd22 | 2223 | len = ARRAY_SIZE(buf); |
39a98e9b JS |
2224 | if (!GetUserNameW(buf, &len)) { |
2225 | initialized = 1; | |
2226 | return NULL; | |
2227 | } | |
2228 | ||
2229 | if (xwcstoutf(user_name, buf, sizeof(user_name)) < 0) { | |
55b6513e | 2230 | initialized = 1; |
f7597aca | 2231 | return NULL; |
55b6513e JS |
2232 | } |
2233 | ||
2234 | p = xmalloc(sizeof(*p)); | |
2235 | p->pw_name = user_name; | |
564be791 JS |
2236 | p->pw_gecos = get_extended_user_info(NameDisplay); |
2237 | if (!p->pw_gecos) | |
2238 | p->pw_gecos = "unknown"; | |
55b6513e JS |
2239 | p->pw_dir = NULL; |
2240 | ||
2241 | initialized = 1; | |
2242 | return p; | |
f4626df5 JS |
2243 | } |
2244 | ||
6072fc31 JS |
2245 | static HANDLE timer_event; |
2246 | static HANDLE timer_thread; | |
2247 | static int timer_interval; | |
2248 | static int one_shot; | |
176478a8 | 2249 | static sig_handler_t timer_fn = SIG_DFL, sigint_fn = SIG_DFL; |
6072fc31 JS |
2250 | |
2251 | /* The timer works like this: | |
2252 | * The thread, ticktack(), is a trivial routine that most of the time | |
2253 | * only waits to receive the signal to terminate. The main thread tells | |
2254 | * the thread to terminate by setting the timer_event to the signalled | |
2255 | * state. | |
2256 | * But ticktack() interrupts the wait state after the timer's interval | |
2257 | * length to call the signal handler. | |
2258 | */ | |
2259 | ||
d7fa500f | 2260 | static unsigned __stdcall ticktack(void *dummy) |
6072fc31 JS |
2261 | { |
2262 | while (WaitForSingleObject(timer_event, timer_interval) == WAIT_TIMEOUT) { | |
176478a8 | 2263 | mingw_raise(SIGALRM); |
6072fc31 JS |
2264 | if (one_shot) |
2265 | break; | |
2266 | } | |
2267 | return 0; | |
2268 | } | |
2269 | ||
2270 | static int start_timer_thread(void) | |
2271 | { | |
2272 | timer_event = CreateEvent(NULL, FALSE, FALSE, NULL); | |
2273 | if (timer_event) { | |
2274 | timer_thread = (HANDLE) _beginthreadex(NULL, 0, ticktack, NULL, 0, NULL); | |
2275 | if (!timer_thread ) | |
2276 | return errno = ENOMEM, | |
2277 | error("cannot start timer thread"); | |
2278 | } else | |
2279 | return errno = ENOMEM, | |
2280 | error("cannot allocate resources for timer"); | |
2281 | return 0; | |
2282 | } | |
2283 | ||
2284 | static void stop_timer_thread(void) | |
2285 | { | |
2286 | if (timer_event) | |
2287 | SetEvent(timer_event); /* tell thread to terminate */ | |
2288 | if (timer_thread) { | |
72d63b2f | 2289 | int rc = WaitForSingleObject(timer_thread, 10000); |
6072fc31 JS |
2290 | if (rc == WAIT_TIMEOUT) |
2291 | error("timer thread did not terminate timely"); | |
2292 | else if (rc != WAIT_OBJECT_0) | |
2293 | error("waiting for timer thread failed: %lu", | |
2294 | GetLastError()); | |
2295 | CloseHandle(timer_thread); | |
2296 | } | |
2297 | if (timer_event) | |
2298 | CloseHandle(timer_event); | |
2299 | timer_event = NULL; | |
2300 | timer_thread = NULL; | |
2301 | } | |
2302 | ||
2303 | static inline int is_timeval_eq(const struct timeval *i1, const struct timeval *i2) | |
2304 | { | |
2305 | return i1->tv_sec == i2->tv_sec && i1->tv_usec == i2->tv_usec; | |
2306 | } | |
2307 | ||
f4626df5 JS |
2308 | int setitimer(int type, struct itimerval *in, struct itimerval *out) |
2309 | { | |
6072fc31 JS |
2310 | static const struct timeval zero; |
2311 | static int atexit_done; | |
2312 | ||
2313 | if (out != NULL) | |
2314 | return errno = EINVAL, | |
2315 | error("setitimer param 3 != NULL not implemented"); | |
2316 | if (!is_timeval_eq(&in->it_interval, &zero) && | |
2317 | !is_timeval_eq(&in->it_interval, &in->it_value)) | |
2318 | return errno = EINVAL, | |
2319 | error("setitimer: it_interval must be zero or eq it_value"); | |
2320 | ||
2321 | if (timer_thread) | |
2322 | stop_timer_thread(); | |
2323 | ||
2324 | if (is_timeval_eq(&in->it_value, &zero) && | |
2325 | is_timeval_eq(&in->it_interval, &zero)) | |
2326 | return 0; | |
2327 | ||
2328 | timer_interval = in->it_value.tv_sec * 1000 + in->it_value.tv_usec / 1000; | |
2329 | one_shot = is_timeval_eq(&in->it_interval, &zero); | |
2330 | if (!atexit_done) { | |
2331 | atexit(stop_timer_thread); | |
2332 | atexit_done = 1; | |
2333 | } | |
2334 | return start_timer_thread(); | |
f4626df5 JS |
2335 | } |
2336 | ||
2337 | int sigaction(int sig, struct sigaction *in, struct sigaction *out) | |
2338 | { | |
6072fc31 JS |
2339 | if (sig != SIGALRM) |
2340 | return errno = EINVAL, | |
2341 | error("sigaction only implemented for SIGALRM"); | |
2342 | if (out != NULL) | |
2343 | return errno = EINVAL, | |
2344 | error("sigaction: param 3 != NULL not implemented"); | |
2345 | ||
2346 | timer_fn = in->sa_handler; | |
2347 | return 0; | |
2348 | } | |
2349 | ||
2350 | #undef signal | |
2351 | sig_handler_t mingw_signal(int sig, sig_handler_t handler) | |
2352 | { | |
a4540658 | 2353 | sig_handler_t old; |
176478a8 EFL |
2354 | |
2355 | switch (sig) { | |
2356 | case SIGALRM: | |
a4540658 | 2357 | old = timer_fn; |
176478a8 EFL |
2358 | timer_fn = handler; |
2359 | break; | |
2360 | ||
2361 | case SIGINT: | |
a4540658 | 2362 | old = sigint_fn; |
176478a8 EFL |
2363 | sigint_fn = handler; |
2364 | break; | |
2365 | ||
2366 | default: | |
6072fc31 | 2367 | return signal(sig, handler); |
176478a8 EFL |
2368 | } |
2369 | ||
6072fc31 | 2370 | return old; |
f4626df5 | 2371 | } |
4804aabc | 2372 | |
176478a8 EFL |
2373 | #undef raise |
2374 | int mingw_raise(int sig) | |
2375 | { | |
2376 | switch (sig) { | |
2377 | case SIGALRM: | |
2378 | if (timer_fn == SIG_DFL) { | |
2379 | if (isatty(STDERR_FILENO)) | |
2380 | fputs("Alarm clock\n", stderr); | |
2381 | exit(128 + SIGALRM); | |
2382 | } else if (timer_fn != SIG_IGN) | |
2383 | timer_fn(SIGALRM); | |
2384 | return 0; | |
2385 | ||
2386 | case SIGINT: | |
2387 | if (sigint_fn == SIG_DFL) | |
2388 | exit(128 + SIGINT); | |
2389 | else if (sigint_fn != SIG_IGN) | |
2390 | sigint_fn(SIGINT); | |
2391 | return 0; | |
2392 | ||
446df603 JH |
2393 | #if defined(_MSC_VER) |
2394 | case SIGILL: | |
2395 | case SIGFPE: | |
2396 | case SIGSEGV: | |
2397 | case SIGTERM: | |
2398 | case SIGBREAK: | |
2399 | case SIGABRT: | |
2400 | case SIGABRT_COMPAT: | |
2401 | /* | |
2402 | * The <signal.h> header in the MS C Runtime defines 8 signals | |
2403 | * as being supported on the platform. Anything else causes an | |
2404 | * "Invalid signal or error" (which in DEBUG builds causes the | |
2405 | * Abort/Retry/Ignore dialog). We by-pass the CRT for things we | |
2406 | * already know will fail. | |
2407 | */ | |
2408 | return raise(sig); | |
2409 | default: | |
2410 | errno = EINVAL; | |
2411 | return -1; | |
2412 | ||
2413 | #else | |
2414 | ||
176478a8 EFL |
2415 | default: |
2416 | return raise(sig); | |
446df603 JH |
2417 | |
2418 | #endif | |
2419 | ||
176478a8 EFL |
2420 | } |
2421 | } | |
2422 | ||
7be401e0 PK |
2423 | int link(const char *oldpath, const char *newpath) |
2424 | { | |
85faec9d KB |
2425 | wchar_t woldpath[MAX_PATH], wnewpath[MAX_PATH]; |
2426 | if (xutftowcs_path(woldpath, oldpath) < 0 || | |
2427 | xutftowcs_path(wnewpath, newpath) < 0) | |
2428 | return -1; | |
2429 | ||
1e1a876b | 2430 | if (!CreateHardLinkW(wnewpath, woldpath, NULL)) { |
7be401e0 PK |
2431 | errno = err_win_to_posix(GetLastError()); |
2432 | return -1; | |
2433 | } | |
2434 | return 0; | |
2435 | } | |
0dbbbc1e | 2436 | |
956d86d1 | 2437 | pid_t waitpid(pid_t pid, int *status, int options) |
52de4db5 EFL |
2438 | { |
2439 | HANDLE h = OpenProcess(SYNCHRONIZE | PROCESS_QUERY_INFORMATION, | |
2440 | FALSE, pid); | |
2441 | if (!h) { | |
2442 | errno = ECHILD; | |
2443 | return -1; | |
2444 | } | |
2445 | ||
ef7108ca EFL |
2446 | if (pid > 0 && options & WNOHANG) { |
2447 | if (WAIT_OBJECT_0 != WaitForSingleObject(h, 0)) { | |
2448 | CloseHandle(h); | |
2449 | return 0; | |
2450 | } | |
2451 | options &= ~WNOHANG; | |
2452 | } | |
2453 | ||
52de4db5 EFL |
2454 | if (options == 0) { |
2455 | struct pinfo_t **ppinfo; | |
2456 | if (WaitForSingleObject(h, INFINITE) != WAIT_OBJECT_0) { | |
2457 | CloseHandle(h); | |
2458 | return 0; | |
2459 | } | |
2460 | ||
2461 | if (status) | |
2462 | GetExitCodeProcess(h, (LPDWORD)status); | |
2463 | ||
2464 | EnterCriticalSection(&pinfo_cs); | |
2465 | ||
2466 | ppinfo = &pinfo; | |
2467 | while (*ppinfo) { | |
2468 | struct pinfo_t *info = *ppinfo; | |
2469 | if (info->pid == pid) { | |
2470 | CloseHandle(info->proc); | |
2471 | *ppinfo = info->next; | |
2472 | free(info); | |
2473 | break; | |
2474 | } | |
2475 | ppinfo = &info->next; | |
2476 | } | |
2477 | ||
2478 | LeaveCriticalSection(&pinfo_cs); | |
2479 | ||
2480 | CloseHandle(h); | |
2481 | return pid; | |
2482 | } | |
2483 | CloseHandle(h); | |
2484 | ||
2485 | errno = EINVAL; | |
2486 | return -1; | |
2487 | } | |
c2369bdf | 2488 | |
1c950a59 KB |
2489 | int xutftowcsn(wchar_t *wcs, const char *utfs, size_t wcslen, int utflen) |
2490 | { | |
2491 | int upos = 0, wpos = 0; | |
2492 | const unsigned char *utf = (const unsigned char*) utfs; | |
2493 | if (!utf || !wcs || wcslen < 1) { | |
2494 | errno = EINVAL; | |
2495 | return -1; | |
2496 | } | |
2497 | /* reserve space for \0 */ | |
2498 | wcslen--; | |
2499 | if (utflen < 0) | |
2500 | utflen = INT_MAX; | |
2501 | ||
2502 | while (upos < utflen) { | |
2503 | int c = utf[upos++] & 0xff; | |
2504 | if (utflen == INT_MAX && c == 0) | |
2505 | break; | |
2506 | ||
2507 | if (wpos >= wcslen) { | |
2508 | wcs[wpos] = 0; | |
2509 | errno = ERANGE; | |
2510 | return -1; | |
2511 | } | |
2512 | ||
2513 | if (c < 0x80) { | |
2514 | /* ASCII */ | |
2515 | wcs[wpos++] = c; | |
2516 | } else if (c >= 0xc2 && c < 0xe0 && upos < utflen && | |
2517 | (utf[upos] & 0xc0) == 0x80) { | |
2518 | /* 2-byte utf-8 */ | |
2519 | c = ((c & 0x1f) << 6); | |
2520 | c |= (utf[upos++] & 0x3f); | |
2521 | wcs[wpos++] = c; | |
2522 | } else if (c >= 0xe0 && c < 0xf0 && upos + 1 < utflen && | |
2523 | !(c == 0xe0 && utf[upos] < 0xa0) && /* over-long encoding */ | |
2524 | (utf[upos] & 0xc0) == 0x80 && | |
2525 | (utf[upos + 1] & 0xc0) == 0x80) { | |
2526 | /* 3-byte utf-8 */ | |
2527 | c = ((c & 0x0f) << 12); | |
2528 | c |= ((utf[upos++] & 0x3f) << 6); | |
2529 | c |= (utf[upos++] & 0x3f); | |
2530 | wcs[wpos++] = c; | |
2531 | } else if (c >= 0xf0 && c < 0xf5 && upos + 2 < utflen && | |
2532 | wpos + 1 < wcslen && | |
2533 | !(c == 0xf0 && utf[upos] < 0x90) && /* over-long encoding */ | |
2534 | !(c == 0xf4 && utf[upos] >= 0x90) && /* > \u10ffff */ | |
2535 | (utf[upos] & 0xc0) == 0x80 && | |
2536 | (utf[upos + 1] & 0xc0) == 0x80 && | |
2537 | (utf[upos + 2] & 0xc0) == 0x80) { | |
2538 | /* 4-byte utf-8: convert to \ud8xx \udcxx surrogate pair */ | |
2539 | c = ((c & 0x07) << 18); | |
2540 | c |= ((utf[upos++] & 0x3f) << 12); | |
2541 | c |= ((utf[upos++] & 0x3f) << 6); | |
2542 | c |= (utf[upos++] & 0x3f); | |
2543 | c -= 0x10000; | |
2544 | wcs[wpos++] = 0xd800 | (c >> 10); | |
2545 | wcs[wpos++] = 0xdc00 | (c & 0x3ff); | |
2546 | } else if (c >= 0xa0) { | |
2547 | /* invalid utf-8 byte, printable unicode char: convert 1:1 */ | |
2548 | wcs[wpos++] = c; | |
2549 | } else { | |
2550 | /* invalid utf-8 byte, non-printable unicode: convert to hex */ | |
2551 | static const char *hex = "0123456789abcdef"; | |
2552 | wcs[wpos++] = hex[c >> 4]; | |
2553 | if (wpos < wcslen) | |
2554 | wcs[wpos++] = hex[c & 0x0f]; | |
2555 | } | |
2556 | } | |
2557 | wcs[wpos] = 0; | |
2558 | return wpos; | |
2559 | } | |
2560 | ||
2561 | int xwcstoutf(char *utf, const wchar_t *wcs, size_t utflen) | |
2562 | { | |
2563 | if (!wcs || !utf || utflen < 1) { | |
2564 | errno = EINVAL; | |
2565 | return -1; | |
2566 | } | |
2567 | utflen = WideCharToMultiByte(CP_UTF8, 0, wcs, -1, utf, utflen, NULL, NULL); | |
2568 | if (utflen) | |
2569 | return utflen - 1; | |
2570 | errno = ERANGE; | |
2571 | return -1; | |
2572 | } | |
2573 | ||
0767172b | 2574 | static void setup_windows_environment(void) |
02e6edc0 | 2575 | { |
1fc7bf79 JS |
2576 | char *tmp = getenv("TMPDIR"); |
2577 | ||
02e6edc0 | 2578 | /* on Windows it is TMP and TEMP */ |
1fc7bf79 JS |
2579 | if (!tmp) { |
2580 | if (!(tmp = getenv("TMP"))) | |
02e6edc0 | 2581 | tmp = getenv("TEMP"); |
1fc7bf79 | 2582 | if (tmp) { |
02e6edc0 | 2583 | setenv("TMPDIR", tmp, 1); |
1fc7bf79 JS |
2584 | tmp = getenv("TMPDIR"); |
2585 | } | |
2586 | } | |
2587 | ||
2588 | if (tmp) { | |
2589 | /* | |
2590 | * Convert all dir separators to forward slashes, | |
2591 | * to help shell commands called from the Git | |
2592 | * executable (by not mistaking the dir separators | |
2593 | * for escape characters). | |
2594 | */ | |
8e9b2080 | 2595 | convert_slashes(tmp); |
02e6edc0 KB |
2596 | } |
2597 | ||
2598 | /* simulate TERM to enable auto-color (see color.c) */ | |
2599 | if (!getenv("TERM")) | |
2600 | setenv("TERM", "cygwin", 1); | |
e12a9556 KB |
2601 | |
2602 | /* calculate HOME if not set */ | |
2603 | if (!getenv("HOME")) { | |
2604 | /* | |
2605 | * try $HOMEDRIVE$HOMEPATH - the home share may be a network | |
2606 | * location, thus also check if the path exists (i.e. is not | |
2607 | * disconnected) | |
2608 | */ | |
2609 | if ((tmp = getenv("HOMEDRIVE"))) { | |
2610 | struct strbuf buf = STRBUF_INIT; | |
2611 | strbuf_addstr(&buf, tmp); | |
2612 | if ((tmp = getenv("HOMEPATH"))) { | |
2613 | strbuf_addstr(&buf, tmp); | |
2614 | if (is_directory(buf.buf)) | |
2615 | setenv("HOME", buf.buf, 1); | |
2616 | else | |
2617 | tmp = NULL; /* use $USERPROFILE */ | |
2618 | } | |
2619 | strbuf_release(&buf); | |
2620 | } | |
2621 | /* use $USERPROFILE if the home share is not available */ | |
2622 | if (!tmp && (tmp = getenv("USERPROFILE"))) | |
2623 | setenv("HOME", tmp, 1); | |
2624 | } | |
02e6edc0 KB |
2625 | } |
2626 | ||
4dc42c6c | 2627 | int is_valid_win32_path(const char *path, int allow_literal_nul) |
d2c84dad | 2628 | { |
4dc42c6c | 2629 | const char *p = path; |
d2c84dad JS |
2630 | int preceding_space_or_period = 0, i = 0, periods = 0; |
2631 | ||
2632 | if (!protect_ntfs) | |
2633 | return 1; | |
2634 | ||
817ddd64 | 2635 | skip_dos_drive_prefix((char **)&path); |
4dc42c6c | 2636 | goto segment_start; |
817ddd64 | 2637 | |
d2c84dad JS |
2638 | for (;;) { |
2639 | char c = *(path++); | |
2640 | switch (c) { | |
2641 | case '\0': | |
2642 | case '/': case '\\': | |
2643 | /* cannot end in ` ` or `.`, except for `.` and `..` */ | |
2644 | if (preceding_space_or_period && | |
2645 | (i != periods || periods > 2)) | |
2646 | return 0; | |
2647 | if (!c) | |
2648 | return 1; | |
2649 | ||
2650 | i = periods = preceding_space_or_period = 0; | |
4dc42c6c JS |
2651 | |
2652 | segment_start: | |
2653 | switch (*path) { | |
2654 | case 'a': case 'A': /* AUX */ | |
2655 | if (((c = path[++i]) != 'u' && c != 'U') || | |
2656 | ((c = path[++i]) != 'x' && c != 'X')) { | |
2657 | not_a_reserved_name: | |
2658 | path += i; | |
2659 | continue; | |
2660 | } | |
2661 | break; | |
b6852e19 JS |
2662 | case 'c': case 'C': |
2663 | /* COM1 ... COM9, CON, CONIN$, CONOUT$ */ | |
4dc42c6c JS |
2664 | if ((c = path[++i]) != 'o' && c != 'O') |
2665 | goto not_a_reserved_name; | |
2666 | c = path[++i]; | |
b6852e19 JS |
2667 | if (c == 'm' || c == 'M') { /* COM1 ... COM9 */ |
2668 | c = path[++i]; | |
2669 | if (c < '1' || c > '9') | |
4dc42c6c JS |
2670 | goto not_a_reserved_name; |
2671 | } else if (c == 'n' || c == 'N') { /* CON */ | |
2672 | c = path[i + 1]; | |
2673 | if ((c == 'i' || c == 'I') && | |
2674 | ((c = path[i + 2]) == 'n' || | |
2675 | c == 'N') && | |
2676 | path[i + 3] == '$') | |
2677 | i += 3; /* CONIN$ */ | |
2678 | else if ((c == 'o' || c == 'O') && | |
2679 | ((c = path[i + 2]) == 'u' || | |
2680 | c == 'U') && | |
2681 | ((c = path[i + 3]) == 't' || | |
2682 | c == 'T') && | |
2683 | path[i + 4] == '$') | |
2684 | i += 4; /* CONOUT$ */ | |
2685 | } else | |
2686 | goto not_a_reserved_name; | |
2687 | break; | |
2688 | case 'l': case 'L': /* LPT<N> */ | |
2689 | if (((c = path[++i]) != 'p' && c != 'P') || | |
2690 | ((c = path[++i]) != 't' && c != 'T') || | |
2691 | !isdigit(path[++i])) | |
2692 | goto not_a_reserved_name; | |
2693 | break; | |
2694 | case 'n': case 'N': /* NUL */ | |
2695 | if (((c = path[++i]) != 'u' && c != 'U') || | |
2696 | ((c = path[++i]) != 'l' && c != 'L') || | |
2697 | (allow_literal_nul && | |
2698 | !path[i + 1] && p == path)) | |
2699 | goto not_a_reserved_name; | |
2700 | break; | |
2701 | case 'p': case 'P': /* PRN */ | |
2702 | if (((c = path[++i]) != 'r' && c != 'R') || | |
2703 | ((c = path[++i]) != 'n' && c != 'N')) | |
2704 | goto not_a_reserved_name; | |
2705 | break; | |
2706 | default: | |
2707 | continue; | |
2708 | } | |
2709 | ||
2710 | /* | |
2711 | * So far, this looks like a reserved name. Let's see | |
2712 | * whether it actually is one: trailing spaces, a file | |
2713 | * extension, or an NTFS Alternate Data Stream do not | |
2714 | * matter, the name is still reserved if any of those | |
2715 | * follow immediately after the actual name. | |
2716 | */ | |
2717 | i++; | |
2718 | if (path[i] == ' ') { | |
2719 | preceding_space_or_period = 1; | |
2720 | while (path[++i] == ' ') | |
2721 | ; /* skip all spaces */ | |
2722 | } | |
2723 | ||
2724 | c = path[i]; | |
2725 | if (c && c != '.' && c != ':' && c != '/' && c != '\\') | |
2726 | goto not_a_reserved_name; | |
2727 | ||
2728 | /* contains reserved name */ | |
2729 | return 0; | |
d2c84dad JS |
2730 | case '.': |
2731 | periods++; | |
2732 | /* fallthru */ | |
2733 | case ' ': | |
2734 | preceding_space_or_period = 1; | |
2735 | i++; | |
2736 | continue; | |
817ddd64 JS |
2737 | case ':': /* DOS drive prefix was already skipped */ |
2738 | case '<': case '>': case '"': case '|': case '?': case '*': | |
2739 | /* illegal character */ | |
2740 | return 0; | |
2741 | default: | |
2742 | if (c > '\0' && c < '\x20') | |
2743 | /* illegal character */ | |
2744 | return 0; | |
d2c84dad JS |
2745 | } |
2746 | preceding_space_or_period = 0; | |
2747 | i++; | |
2748 | } | |
2749 | } | |
2750 | ||
396ff754 | 2751 | #if !defined(_MSC_VER) |
5901dc66 KB |
2752 | /* |
2753 | * Disable MSVCRT command line wildcard expansion (__getmainargs called from | |
2754 | * mingw startup code, see init.c in mingw runtime). | |
2755 | */ | |
2756 | int _CRT_glob = 0; | |
396ff754 | 2757 | #endif |
3f046148 | 2758 | |
0767172b | 2759 | static NORETURN void die_startup(void) |
3f046148 KB |
2760 | { |
2761 | fputs("fatal: not enough memory for initialization", stderr); | |
2762 | exit(128); | |
2763 | } | |
2764 | ||
6f1c189c KB |
2765 | static void *malloc_startup(size_t size) |
2766 | { | |
2767 | void *result = malloc(size); | |
2768 | if (!result) | |
2769 | die_startup(); | |
2770 | return result; | |
2771 | } | |
2772 | ||
2773 | static char *wcstoutfdup_startup(char *buffer, const wchar_t *wcs, size_t len) | |
2774 | { | |
2775 | len = xwcstoutf(buffer, wcs, len) + 1; | |
2776 | return memcpy(malloc_startup(len), buffer, len); | |
2777 | } | |
2778 | ||
3f944424 JS |
2779 | static void maybe_redirect_std_handle(const wchar_t *key, DWORD std_id, int fd, |
2780 | DWORD desired_access, DWORD flags) | |
2781 | { | |
2782 | DWORD create_flag = fd ? OPEN_ALWAYS : OPEN_EXISTING; | |
2783 | wchar_t buf[MAX_PATH]; | |
2784 | DWORD max = ARRAY_SIZE(buf); | |
2785 | HANDLE handle; | |
2786 | DWORD ret = GetEnvironmentVariableW(key, buf, max); | |
2787 | ||
2788 | if (!ret || ret >= max) | |
2789 | return; | |
2790 | ||
2791 | /* make sure this does not leak into child processes */ | |
2792 | SetEnvironmentVariableW(key, NULL); | |
2793 | if (!wcscmp(buf, L"off")) { | |
2794 | close(fd); | |
2795 | handle = GetStdHandle(std_id); | |
2796 | if (handle != INVALID_HANDLE_VALUE) | |
2797 | CloseHandle(handle); | |
2798 | return; | |
2799 | } | |
1a172e4a JS |
2800 | if (std_id == STD_ERROR_HANDLE && !wcscmp(buf, L"2>&1")) { |
2801 | handle = GetStdHandle(STD_OUTPUT_HANDLE); | |
2802 | if (handle == INVALID_HANDLE_VALUE) { | |
2803 | close(fd); | |
2804 | handle = GetStdHandle(std_id); | |
2805 | if (handle != INVALID_HANDLE_VALUE) | |
2806 | CloseHandle(handle); | |
2807 | } else { | |
2808 | int new_fd = _open_osfhandle((intptr_t)handle, O_BINARY); | |
2809 | SetStdHandle(std_id, handle); | |
2810 | dup2(new_fd, fd); | |
2811 | /* do *not* close the new_fd: that would close stdout */ | |
2812 | } | |
2813 | return; | |
2814 | } | |
3f944424 JS |
2815 | handle = CreateFileW(buf, desired_access, 0, NULL, create_flag, |
2816 | flags, NULL); | |
2817 | if (handle != INVALID_HANDLE_VALUE) { | |
2818 | int new_fd = _open_osfhandle((intptr_t)handle, O_BINARY); | |
2819 | SetStdHandle(std_id, handle); | |
2820 | dup2(new_fd, fd); | |
2821 | close(new_fd); | |
2822 | } | |
2823 | } | |
2824 | ||
2825 | static void maybe_redirect_std_handles(void) | |
2826 | { | |
2827 | maybe_redirect_std_handle(L"GIT_REDIRECT_STDIN", STD_INPUT_HANDLE, 0, | |
2828 | GENERIC_READ, FILE_ATTRIBUTE_NORMAL); | |
2829 | maybe_redirect_std_handle(L"GIT_REDIRECT_STDOUT", STD_OUTPUT_HANDLE, 1, | |
2830 | GENERIC_WRITE, FILE_ATTRIBUTE_NORMAL); | |
2831 | maybe_redirect_std_handle(L"GIT_REDIRECT_STDERR", STD_ERROR_HANDLE, 2, | |
2832 | GENERIC_WRITE, FILE_FLAG_NO_BUFFERING); | |
2833 | } | |
2834 | ||
dce7d295 JH |
2835 | #ifdef _MSC_VER |
2836 | #ifdef _DEBUG | |
2837 | #include <crtdbg.h> | |
2838 | #endif | |
2839 | #endif | |
2840 | ||
396ff754 JS |
2841 | /* |
2842 | * We implement wmain() and compile with -municode, which would | |
2843 | * normally ignore main(), but we call the latter from the former | |
2844 | * so that we can handle non-ASCII command-line parameters | |
2845 | * appropriately. | |
2846 | * | |
2847 | * To be more compatible with the core git code, we convert | |
2848 | * argv into UTF8 and pass them directly to main(). | |
2849 | */ | |
2850 | int wmain(int argc, const wchar_t **wargv) | |
13f1df43 | 2851 | { |
396ff754 JS |
2852 | int i, maxlen, exit_status; |
2853 | char *buffer, **save; | |
2854 | const char **argv; | |
3f046148 | 2855 | |
a0897249 JH |
2856 | trace2_initialize_clock(); |
2857 | ||
556702f8 | 2858 | #ifdef _MSC_VER |
f6a63937 JS |
2859 | #ifdef _DEBUG |
2860 | _CrtSetReportMode(_CRT_ASSERT, _CRTDBG_MODE_DEBUG); | |
2861 | #endif | |
2862 | ||
556702f8 JH |
2863 | #ifdef USE_MSVC_CRTDBG |
2864 | _CrtSetDbgFlag(_CRTDBG_ALLOC_MEM_DF | _CRTDBG_LEAK_CHECK_DF); | |
2865 | #endif | |
2866 | #endif | |
2867 | ||
3f944424 JS |
2868 | maybe_redirect_std_handles(); |
2869 | ||
3f046148 | 2870 | /* determine size of argv and environ conversion buffer */ |
86e25458 | 2871 | maxlen = wcslen(wargv[0]); |
3f046148 KB |
2872 | for (i = 1; i < argc; i++) |
2873 | maxlen = max(maxlen, wcslen(wargv[i])); | |
2874 | ||
2875 | /* allocate buffer (wchar_t encodes to max 3 UTF-8 bytes) */ | |
2876 | maxlen = 3 * maxlen + 1; | |
6f1c189c | 2877 | buffer = malloc_startup(maxlen); |
3f046148 | 2878 | |
396ff754 JS |
2879 | /* |
2880 | * Create a UTF-8 version of w_argv. Also create a "save" copy | |
2881 | * to remember all the string pointers because parse_options() | |
2882 | * will remove claimed items from the argv that we pass down. | |
2883 | */ | |
2884 | ALLOC_ARRAY(argv, argc + 1); | |
2885 | ALLOC_ARRAY(save, argc + 1); | |
86e25458 | 2886 | for (i = 0; i < argc; i++) |
396ff754 JS |
2887 | argv[i] = save[i] = wcstoutfdup_startup(buffer, wargv[i], maxlen); |
2888 | argv[i] = save[i] = NULL; | |
3f046148 | 2889 | free(buffer); |
13f1df43 | 2890 | |
6dc71543 | 2891 | /* fix Windows specific environment settings */ |
02e6edc0 | 2892 | setup_windows_environment(); |
baea068d | 2893 | |
0e218f91 JS |
2894 | unset_environment_variables = xstrdup("PERL5LIB"); |
2895 | ||
13f1df43 KB |
2896 | /* initialize critical section for waitpid pinfo_t list */ |
2897 | InitializeCriticalSection(&pinfo_cs); | |
2898 | ||
2899 | /* set up default file mode and file modes for stdin/out/err */ | |
2900 | _fmode = _O_BINARY; | |
2901 | _setmode(_fileno(stdin), _O_BINARY); | |
2902 | _setmode(_fileno(stdout), _O_BINARY); | |
2903 | _setmode(_fileno(stderr), _O_BINARY); | |
eac14f89 KB |
2904 | |
2905 | /* initialize Unicode console */ | |
2906 | winansi_init(); | |
396ff754 JS |
2907 | |
2908 | /* invoke the real main() using our utf8 version of argv. */ | |
2909 | exit_status = main(argc, argv); | |
2910 | ||
2911 | for (i = 0; i < argc; i++) | |
2912 | free(save[i]); | |
2913 | free(save); | |
2914 | free(argv); | |
2915 | ||
2916 | return exit_status; | |
13f1df43 | 2917 | } |
7b6aff06 NTND |
2918 | |
2919 | int uname(struct utsname *buf) | |
2920 | { | |
d62c89af | 2921 | unsigned v = (unsigned)GetVersion(); |
7b6aff06 | 2922 | memset(buf, 0, sizeof(*buf)); |
5096d490 JK |
2923 | xsnprintf(buf->sysname, sizeof(buf->sysname), "Windows"); |
2924 | xsnprintf(buf->release, sizeof(buf->release), | |
2925 | "%u.%u", v & 0xff, (v >> 8) & 0xff); | |
7b6aff06 | 2926 | /* assuming NT variants only.. */ |
5096d490 JK |
2927 | xsnprintf(buf->version, sizeof(buf->version), |
2928 | "%u", (v >> 16) & 0x7fff); | |
7b6aff06 NTND |
2929 | return 0; |
2930 | } |