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