1 #include "../git-compat-util.h"
6 #include "../run-command.h"
9 #define HCAST(type, handle) ((type)(intptr_t)handle)
11 static const int delay[] = { 0, 1, 10, 20, 40 };
13 int err_win_to_posix(DWORD 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;
126 static inline int is_file_in_use_error(DWORD errcode)
129 case ERROR_SHARING_VIOLATION:
130 case ERROR_ACCESS_DENIED:
137 static int read_yes_no_answer(void)
141 if (fgets(answer, sizeof(answer), stdin)) {
142 size_t answer_len = strlen(answer);
143 int got_full_line = 0, c;
145 /* remove the newline */
146 if (answer_len >= 2 && answer[answer_len-2] == '\r') {
147 answer[answer_len-2] = '\0';
149 } else if (answer_len >= 1 && answer[answer_len-1] == '\n') {
150 answer[answer_len-1] = '\0';
153 /* flush the buffer in case we did not get the full line */
155 while ((c = getchar()) != EOF && c != '\n')
158 /* we could not read, return the
159 * default answer which is no */
162 if (tolower(answer[0]) == 'y' && !answer[1])
164 if (!strncasecmp(answer, "yes", sizeof(answer)))
166 if (tolower(answer[0]) == 'n' && !answer[1])
168 if (!strncasecmp(answer, "no", sizeof(answer)))
171 /* did not find an answer we understand */
175 static int ask_yes_no_if_possible(const char *format, ...)
178 const char *retry_hook[] = { NULL, NULL, NULL };
181 va_start(args, format);
182 vsnprintf(question, sizeof(question), format, args);
185 if ((retry_hook[0] = mingw_getenv("GIT_ASK_YESNO"))) {
186 retry_hook[1] = question;
187 return !run_command_v_opt(retry_hook, 0);
190 if (!isatty(_fileno(stdin)) || !isatty(_fileno(stderr)))
195 fprintf(stderr, "%s (y/n) ", question);
197 if ((answer = read_yes_no_answer()) >= 0)
200 fprintf(stderr, "Sorry, I did not understand your answer. "
201 "Please type 'y' or 'n'\n");
205 int mingw_unlink(const char *pathname)
208 wchar_t wpathname[MAX_PATH];
209 if (xutftowcs_path(wpathname, pathname) < 0)
212 /* read-only files cannot be removed */
213 _wchmod(wpathname, 0666);
214 while ((ret = _wunlink(wpathname)) == -1 && tries < ARRAY_SIZE(delay)) {
215 if (!is_file_in_use_error(GetLastError()))
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.
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))
230 ret = _wunlink(wpathname);
234 static int is_dir_empty(const wchar_t *wpath)
236 WIN32_FIND_DATAW findbuf;
238 wchar_t wbuf[MAX_PATH + 2];
240 wcscat(wbuf, L"\\*");
241 handle = FindFirstFileW(wbuf, &findbuf);
242 if (handle == INVALID_HANDLE_VALUE)
243 return GetLastError() == ERROR_NO_MORE_FILES;
245 while (!wcscmp(findbuf.cFileName, L".") ||
246 !wcscmp(findbuf.cFileName, L".."))
247 if (!FindNextFileW(handle, &findbuf)) {
248 DWORD err = GetLastError();
250 return err == ERROR_NO_MORE_FILES;
256 int mingw_rmdir(const char *pathname)
259 wchar_t wpathname[MAX_PATH];
260 if (xutftowcs_path(wpathname, pathname) < 0)
263 while ((ret = _wrmdir(wpathname)) == -1 && tries < ARRAY_SIZE(delay)) {
264 if (!is_file_in_use_error(GetLastError()))
265 errno = err_win_to_posix(GetLastError());
268 if (!is_dir_empty(wpathname)) {
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.
282 while (ret == -1 && errno == EACCES && is_file_in_use_error(GetLastError()) &&
283 ask_yes_no_if_possible("Deletion of directory '%s' failed. "
284 "Should I try again?", pathname))
285 ret = _wrmdir(wpathname);
289 static inline int needs_hiding(const char *path)
291 const char *basename;
293 if (hide_dotfiles == HIDE_DOTFILES_FALSE)
296 /* We cannot use basename(), as it would remove trailing slashes */
297 mingw_skip_dos_drive_prefix((char **)&path);
301 for (basename = path; *path; path++)
302 if (is_dir_sep(*path)) {
305 } while (is_dir_sep(*path));
306 /* ignore trailing slashes */
311 if (hide_dotfiles == HIDE_DOTFILES_TRUE)
312 return *basename == '.';
314 assert(hide_dotfiles == HIDE_DOTFILES_DOTGITONLY);
315 return !strncasecmp(".git", basename, 4) &&
316 (!basename[4] || is_dir_sep(basename[4]));
319 static int set_hidden_flag(const wchar_t *path, int set)
321 DWORD original = GetFileAttributesW(path), modified;
323 modified = original | FILE_ATTRIBUTE_HIDDEN;
325 modified = original & ~FILE_ATTRIBUTE_HIDDEN;
326 if (original == modified || SetFileAttributesW(path, modified))
328 errno = err_win_to_posix(GetLastError());
332 int mingw_mkdir(const char *path, int mode)
335 wchar_t wpath[MAX_PATH];
337 if (!is_valid_win32_path(path)) {
342 if (xutftowcs_path(wpath, path) < 0)
344 ret = _wmkdir(wpath);
345 if (!ret && needs_hiding(path))
346 return set_hidden_flag(wpath, 1);
350 int mingw_open (const char *filename, int oflags, ...)
354 int fd, create = (oflags & (O_CREAT | O_EXCL)) == (O_CREAT | O_EXCL);
355 wchar_t wfilename[MAX_PATH];
357 va_start(args, oflags);
358 mode = va_arg(args, int);
361 if (!is_valid_win32_path(filename)) {
362 errno = create ? EINVAL : ENOENT;
366 if (filename && !strcmp(filename, "/dev/null"))
369 if (xutftowcs_path(wfilename, filename) < 0)
371 fd = _wopen(wfilename, oflags, mode);
373 if (fd < 0 && (oflags & O_ACCMODE) != O_RDONLY && errno == EACCES) {
374 DWORD attrs = GetFileAttributesW(wfilename);
375 if (attrs != INVALID_FILE_ATTRIBUTES && (attrs & FILE_ATTRIBUTE_DIRECTORY))
378 if ((oflags & O_CREAT) && needs_hiding(filename)) {
380 * Internally, _wopen() uses the CreateFile() API which errors
381 * out with an ERROR_ACCESS_DENIED if CREATE_ALWAYS was
382 * specified and an already existing file's attributes do not
383 * match *exactly*. As there is no mode or flag we can set that
384 * would correspond to FILE_ATTRIBUTE_HIDDEN, let's just try
385 * again *without* the O_CREAT flag (that corresponds to the
386 * CREATE_ALWAYS flag of CreateFile()).
388 if (fd < 0 && errno == EACCES)
389 fd = _wopen(wfilename, oflags & ~O_CREAT, mode);
390 if (fd >= 0 && set_hidden_flag(wfilename, 1))
391 warning("could not mark '%s' as hidden.", filename);
396 static BOOL WINAPI ctrl_ignore(DWORD type)
402 int mingw_fgetc(FILE *stream)
405 if (!isatty(_fileno(stream)))
406 return fgetc(stream);
408 SetConsoleCtrlHandler(ctrl_ignore, TRUE);
411 if (ch != EOF || GetLastError() != ERROR_OPERATION_ABORTED)
414 /* Ctrl+C was pressed, simulate SIGINT and retry */
417 SetConsoleCtrlHandler(ctrl_ignore, FALSE);
422 FILE *mingw_fopen (const char *filename, const char *otype)
424 int hide = needs_hiding(filename);
426 wchar_t wfilename[MAX_PATH], wotype[4];
427 if (!is_valid_win32_path(filename)) {
428 int create = otype && strchr(otype, 'w');
429 errno = create ? EINVAL : ENOENT;
432 if (filename && !strcmp(filename, "/dev/null"))
434 if (xutftowcs_path(wfilename, filename) < 0 ||
435 xutftowcs(wotype, otype, ARRAY_SIZE(wotype)) < 0)
437 if (hide && !access(filename, F_OK) && set_hidden_flag(wfilename, 0)) {
438 error("could not unhide %s", filename);
441 file = _wfopen(wfilename, wotype);
442 if (!file && GetLastError() == ERROR_INVALID_NAME)
444 if (file && hide && set_hidden_flag(wfilename, 1))
445 warning("could not mark '%s' as hidden.", filename);
449 FILE *mingw_freopen (const char *filename, const char *otype, FILE *stream)
451 int hide = needs_hiding(filename);
453 wchar_t wfilename[MAX_PATH], wotype[4];
454 if (!is_valid_win32_path(filename)) {
455 int create = otype && strchr(otype, 'w');
456 errno = create ? EINVAL : ENOENT;
459 if (filename && !strcmp(filename, "/dev/null"))
461 if (xutftowcs_path(wfilename, filename) < 0 ||
462 xutftowcs(wotype, otype, ARRAY_SIZE(wotype)) < 0)
464 if (hide && !access(filename, F_OK) && set_hidden_flag(wfilename, 0)) {
465 error("could not unhide %s", filename);
468 file = _wfreopen(wfilename, wotype, stream);
469 if (file && hide && set_hidden_flag(wfilename, 1))
470 warning("could not mark '%s' as hidden.", filename);
475 int mingw_fflush(FILE *stream)
477 int ret = fflush(stream);
480 * write() is used behind the scenes of stdio output functions.
481 * Since git code does not check for errors after each stdio write
482 * operation, it can happen that write() is called by a later
483 * stdio function even if an earlier write() call failed. In the
484 * case of a pipe whose readable end was closed, only the first
485 * call to write() reports EPIPE on Windows. Subsequent write()
486 * calls report EINVAL. It is impossible to notice whether this
487 * fflush invocation triggered such a case, therefore, we have to
488 * catch all EINVAL errors whole-sale.
490 if (ret && errno == EINVAL)
497 ssize_t mingw_write(int fd, const void *buf, size_t len)
499 ssize_t result = write(fd, buf, len);
501 if (result < 0 && errno == EINVAL && buf) {
502 /* check if fd is a pipe */
503 HANDLE h = (HANDLE) _get_osfhandle(fd);
504 if (GetFileType(h) == FILE_TYPE_PIPE)
513 int mingw_access(const char *filename, int mode)
515 wchar_t wfilename[MAX_PATH];
516 if (xutftowcs_path(wfilename, filename) < 0)
518 /* X_OK is not supported by the MSVCRT version */
519 return _waccess(wfilename, mode & ~X_OK);
522 int mingw_chdir(const char *dirname)
524 wchar_t wdirname[MAX_PATH];
525 if (xutftowcs_path(wdirname, dirname) < 0)
527 return _wchdir(wdirname);
530 int mingw_chmod(const char *filename, int mode)
532 wchar_t wfilename[MAX_PATH];
533 if (xutftowcs_path(wfilename, filename) < 0)
535 return _wchmod(wfilename, mode);
539 * The unit of FILETIME is 100-nanoseconds since January 1, 1601, UTC.
540 * Returns the 100-nanoseconds ("hekto nanoseconds") since the epoch.
542 static inline long long filetime_to_hnsec(const FILETIME *ft)
544 long long winTime = ((long long)ft->dwHighDateTime << 32) + ft->dwLowDateTime;
545 /* Windows to Unix Epoch conversion */
546 return winTime - 116444736000000000LL;
549 static inline time_t filetime_to_time_t(const FILETIME *ft)
551 return (time_t)(filetime_to_hnsec(ft) / 10000000);
555 * Verifies that safe_create_leading_directories() would succeed.
557 static int has_valid_directory_prefix(wchar_t *wfilename)
559 int n = wcslen(wfilename);
562 wchar_t c = wfilename[--n];
568 wfilename[n] = L'\0';
569 attributes = GetFileAttributesW(wfilename);
571 if (attributes == FILE_ATTRIBUTE_DIRECTORY ||
572 attributes == FILE_ATTRIBUTE_DEVICE)
574 if (attributes == INVALID_FILE_ATTRIBUTES)
575 switch (GetLastError()) {
576 case ERROR_PATH_NOT_FOUND:
578 case ERROR_FILE_NOT_FOUND:
579 /* This implies parent directory exists. */
587 /* We keep the do_lstat code in a separate function to avoid recursion.
588 * When a path ends with a slash, the stat will fail with ENOENT. In
589 * this case, we strip the trailing slashes and stat again.
591 * If follow is true then act like stat() and report on the link
592 * target. Otherwise report on the link itself.
594 static int do_lstat(int follow, const char *file_name, struct stat *buf)
596 WIN32_FILE_ATTRIBUTE_DATA fdata;
597 wchar_t wfilename[MAX_PATH];
598 if (xutftowcs_path(wfilename, file_name) < 0)
601 if (GetFileAttributesExW(wfilename, GetFileExInfoStandard, &fdata)) {
606 buf->st_mode = file_attr_to_st_mode(fdata.dwFileAttributes);
607 buf->st_size = fdata.nFileSizeLow |
608 (((off_t)fdata.nFileSizeHigh)<<32);
609 buf->st_dev = buf->st_rdev = 0; /* not used by Git */
610 buf->st_atime = filetime_to_time_t(&(fdata.ftLastAccessTime));
611 buf->st_mtime = filetime_to_time_t(&(fdata.ftLastWriteTime));
612 buf->st_ctime = filetime_to_time_t(&(fdata.ftCreationTime));
613 if (fdata.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) {
614 WIN32_FIND_DATAW findbuf;
615 HANDLE handle = FindFirstFileW(wfilename, &findbuf);
616 if (handle != INVALID_HANDLE_VALUE) {
617 if ((findbuf.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) &&
618 (findbuf.dwReserved0 == IO_REPARSE_TAG_SYMLINK)) {
620 char buffer[MAXIMUM_REPARSE_DATA_BUFFER_SIZE];
621 buf->st_size = readlink(file_name, buffer, MAXIMUM_REPARSE_DATA_BUFFER_SIZE);
623 buf->st_mode = S_IFLNK;
625 buf->st_mode |= S_IREAD;
626 if (!(findbuf.dwFileAttributes & FILE_ATTRIBUTE_READONLY))
627 buf->st_mode |= S_IWRITE;
634 switch (GetLastError()) {
635 case ERROR_ACCESS_DENIED:
636 case ERROR_SHARING_VIOLATION:
637 case ERROR_LOCK_VIOLATION:
638 case ERROR_SHARING_BUFFER_EXCEEDED:
641 case ERROR_BUFFER_OVERFLOW:
642 errno = ENAMETOOLONG;
644 case ERROR_NOT_ENOUGH_MEMORY:
647 case ERROR_PATH_NOT_FOUND:
648 if (!has_valid_directory_prefix(wfilename)) {
660 /* We provide our own lstat/fstat functions, since the provided
661 * lstat/fstat functions are so slow. These stat functions are
662 * tailored for Git's usage (read: fast), and are not meant to be
663 * complete. Note that Git stat()s are redirected to mingw_lstat()
664 * too, since Windows doesn't really handle symlinks that well.
666 static int do_stat_internal(int follow, const char *file_name, struct stat *buf)
669 char alt_name[PATH_MAX];
671 if (!do_lstat(follow, file_name, buf))
674 /* if file_name ended in a '/', Windows returned ENOENT;
675 * try again without trailing slashes
680 namelen = strlen(file_name);
681 if (namelen && file_name[namelen-1] != '/')
683 while (namelen && file_name[namelen-1] == '/')
685 if (!namelen || namelen >= PATH_MAX)
688 memcpy(alt_name, file_name, namelen);
689 alt_name[namelen] = 0;
690 return do_lstat(follow, alt_name, buf);
693 int mingw_lstat(const char *file_name, struct stat *buf)
695 return do_stat_internal(0, file_name, buf);
697 int mingw_stat(const char *file_name, struct stat *buf)
699 return do_stat_internal(1, file_name, buf);
702 int mingw_fstat(int fd, struct stat *buf)
704 HANDLE fh = (HANDLE)_get_osfhandle(fd);
705 BY_HANDLE_FILE_INFORMATION fdata;
707 if (fh == INVALID_HANDLE_VALUE) {
711 /* direct non-file handles to MS's fstat() */
712 if (GetFileType(fh) != FILE_TYPE_DISK)
713 return _fstati64(fd, buf);
715 if (GetFileInformationByHandle(fh, &fdata)) {
720 buf->st_mode = file_attr_to_st_mode(fdata.dwFileAttributes);
721 buf->st_size = fdata.nFileSizeLow |
722 (((off_t)fdata.nFileSizeHigh)<<32);
723 buf->st_dev = buf->st_rdev = 0; /* not used by Git */
724 buf->st_atime = filetime_to_time_t(&(fdata.ftLastAccessTime));
725 buf->st_mtime = filetime_to_time_t(&(fdata.ftLastWriteTime));
726 buf->st_ctime = filetime_to_time_t(&(fdata.ftCreationTime));
733 static inline void time_t_to_filetime(time_t t, FILETIME *ft)
735 long long winTime = t * 10000000LL + 116444736000000000LL;
736 ft->dwLowDateTime = winTime;
737 ft->dwHighDateTime = winTime >> 32;
740 int mingw_utime (const char *file_name, const struct utimbuf *times)
745 wchar_t wfilename[MAX_PATH];
746 if (xutftowcs_path(wfilename, file_name) < 0)
749 /* must have write permission */
750 attrs = GetFileAttributesW(wfilename);
751 if (attrs != INVALID_FILE_ATTRIBUTES &&
752 (attrs & FILE_ATTRIBUTE_READONLY)) {
753 /* ignore errors here; open() will report them */
754 SetFileAttributesW(wfilename, attrs & ~FILE_ATTRIBUTE_READONLY);
757 if ((fh = _wopen(wfilename, O_RDWR | O_BINARY)) < 0) {
763 time_t_to_filetime(times->modtime, &mft);
764 time_t_to_filetime(times->actime, &aft);
766 GetSystemTimeAsFileTime(&mft);
769 if (!SetFileTime((HANDLE)_get_osfhandle(fh), NULL, &aft, &mft)) {
777 if (attrs != INVALID_FILE_ATTRIBUTES &&
778 (attrs & FILE_ATTRIBUTE_READONLY)) {
779 /* ignore errors again */
780 SetFileAttributesW(wfilename, attrs);
785 unsigned int sleep (unsigned int seconds)
791 char *mingw_mktemp(char *template)
793 wchar_t wtemplate[MAX_PATH];
794 if (xutftowcs_path(wtemplate, template) < 0)
796 if (!_wmktemp(wtemplate))
798 if (xwcstoutf(template, wtemplate, strlen(template) + 1) < 0)
803 int mkstemp(char *template)
805 char *filename = mktemp(template);
806 if (filename == NULL)
808 return open(filename, O_RDWR | O_CREAT, 0600);
811 int gettimeofday(struct timeval *tv, void *tz)
816 GetSystemTimeAsFileTime(&ft);
817 hnsec = filetime_to_hnsec(&ft);
818 tv->tv_sec = hnsec / 10000000;
819 tv->tv_usec = (hnsec % 10000000) / 10;
823 int pipe(int filedes[2])
827 /* this creates non-inheritable handles */
828 if (!CreatePipe(&h[0], &h[1], NULL, 8192)) {
829 errno = err_win_to_posix(GetLastError());
832 filedes[0] = _open_osfhandle(HCAST(int, h[0]), O_NOINHERIT);
833 if (filedes[0] < 0) {
838 filedes[1] = _open_osfhandle(HCAST(int, h[1]), O_NOINHERIT);
839 if (filedes[1] < 0) {
847 struct tm *gmtime_r(const time_t *timep, struct tm *result)
849 /* gmtime() in MSVCRT.DLL is thread-safe, but not reentrant */
850 memcpy(result, gmtime(timep), sizeof(struct tm));
854 struct tm *localtime_r(const time_t *timep, struct tm *result)
856 /* localtime() in MSVCRT.DLL is thread-safe, but not reentrant */
857 memcpy(result, localtime(timep), sizeof(struct tm));
861 char *mingw_getcwd(char *pointer, int len)
863 wchar_t wpointer[MAX_PATH];
864 if (!_wgetcwd(wpointer, ARRAY_SIZE(wpointer)))
866 if (xwcstoutf(pointer, wpointer, len) < 0)
868 convert_slashes(pointer);
873 * See http://msdn2.microsoft.com/en-us/library/17w5ykft(vs.71).aspx
874 * (Parsing C++ Command-Line Arguments)
876 static const char *quote_arg(const char *arg)
878 /* count chars to quote */
880 int force_quotes = 0;
883 if (!*p) force_quotes = 1;
885 if (isspace(*p) || *p == '*' || *p == '?' || *p == '{' || *p == '\'')
889 else if (*p == '\\') {
903 if (!force_quotes && n == 0)
906 /* insert \ where necessary */
907 d = q = xmalloc(st_add3(len, n, 3));
912 else if (*arg == '\\') {
914 while (*arg == '\\') {
931 static const char *parse_interpreter(const char *cmd)
933 static char buf[100];
937 /* don't even try a .exe */
939 if (n >= 4 && !strcasecmp(cmd+n-4, ".exe"))
942 fd = open(cmd, O_RDONLY);
945 n = read(fd, buf, sizeof(buf)-1);
947 if (n < 4) /* at least '#!/x' and not error */
950 if (buf[0] != '#' || buf[1] != '!')
953 p = buf + strcspn(buf, "\r\n");
958 if (!(p = strrchr(buf+2, '/')) && !(p = strrchr(buf+2, '\\')))
961 if ((opt = strchr(p+1, ' ')))
967 * exe_only means that we only want to detect .exe files, but not scripts
968 * (which do not have an extension)
970 static char *lookup_prog(const char *dir, int dirlen, const char *cmd,
971 int isexe, int exe_only)
974 snprintf(path, sizeof(path), "%.*s\\%s.exe", dirlen, dir, cmd);
976 if (!isexe && access(path, F_OK) == 0)
977 return xstrdup(path);
978 path[strlen(path)-4] = '\0';
979 if ((!exe_only || isexe) && access(path, F_OK) == 0)
980 if (!(GetFileAttributes(path) & FILE_ATTRIBUTE_DIRECTORY))
981 return xstrdup(path);
986 * Determines the absolute path of cmd using the split path in path.
987 * If cmd contains a slash or backslash, no lookup is performed.
989 static char *path_lookup(const char *cmd, int exe_only)
993 int len = strlen(cmd);
994 int isexe = len >= 4 && !strcasecmp(cmd+len-4, ".exe");
996 if (strchr(cmd, '/') || strchr(cmd, '\\'))
999 path = mingw_getenv("PATH");
1004 const char *sep = strchrnul(path, ';');
1005 int dirlen = sep - path;
1007 prog = lookup_prog(path, dirlen, cmd, isexe, exe_only);
1016 static int do_putenv(char **env, const char *name, int size, int free_old);
1018 /* used number of elements of environ array, including terminating NULL */
1019 static int environ_size = 0;
1020 /* allocated size of environ array, in bytes */
1021 static int environ_alloc = 0;
1024 * Create environment block suitable for CreateProcess. Merges current
1025 * process environment and the supplied environment changes.
1027 static wchar_t *make_environment_block(char **deltaenv)
1029 wchar_t *wenvblk = NULL;
1031 int i = 0, size = environ_size, wenvsz = 0, wenvpos = 0;
1033 while (deltaenv && deltaenv[i])
1036 /* copy the environment, leaving space for changes */
1037 ALLOC_ARRAY(tmpenv, size + i);
1038 memcpy(tmpenv, environ, size * sizeof(char*));
1040 /* merge supplied environment changes into the temporary environment */
1041 for (i = 0; deltaenv && deltaenv[i]; i++)
1042 size = do_putenv(tmpenv, deltaenv[i], size, 0);
1044 /* create environment block from temporary environment */
1045 for (i = 0; tmpenv[i]; i++) {
1046 size = 2 * strlen(tmpenv[i]) + 2; /* +2 for final \0 */
1047 ALLOC_GROW(wenvblk, (wenvpos + size) * sizeof(wchar_t), wenvsz);
1048 wenvpos += xutftowcs(&wenvblk[wenvpos], tmpenv[i], size) + 1;
1050 /* add final \0 terminator */
1051 wenvblk[wenvpos] = 0;
1057 struct pinfo_t *next;
1061 static struct pinfo_t *pinfo = NULL;
1062 CRITICAL_SECTION pinfo_cs;
1064 static pid_t mingw_spawnve_fd(const char *cmd, const char **argv, char **deltaenv,
1066 int prepend_cmd, int fhin, int fhout, int fherr)
1069 PROCESS_INFORMATION pi;
1071 wchar_t wcmd[MAX_PATH], wdir[MAX_PATH], *wargs, *wenvblk = NULL;
1072 unsigned flags = CREATE_UNICODE_ENVIRONMENT;
1075 /* Determine whether or not we are associated to a console */
1076 HANDLE cons = CreateFile("CONOUT$", GENERIC_WRITE,
1077 FILE_SHARE_WRITE, NULL, OPEN_EXISTING,
1078 FILE_ATTRIBUTE_NORMAL, NULL);
1079 if (cons == INVALID_HANDLE_VALUE) {
1080 /* There is no console associated with this process.
1081 * Since the child is a console process, Windows
1082 * would normally create a console window. But
1083 * since we'll be redirecting std streams, we do
1084 * not need the console.
1085 * It is necessary to use DETACHED_PROCESS
1086 * instead of CREATE_NO_WINDOW to make ssh
1087 * recognize that it has no console.
1089 flags |= DETACHED_PROCESS;
1091 /* There is already a console. If we specified
1092 * DETACHED_PROCESS here, too, Windows would
1093 * disassociate the child from the console.
1094 * The same is true for CREATE_NO_WINDOW.
1099 memset(&si, 0, sizeof(si));
1101 si.dwFlags = STARTF_USESTDHANDLES;
1102 si.hStdInput = winansi_get_osfhandle(fhin);
1103 si.hStdOutput = winansi_get_osfhandle(fhout);
1104 si.hStdError = winansi_get_osfhandle(fherr);
1106 if (xutftowcs_path(wcmd, cmd) < 0)
1108 if (dir && xutftowcs_path(wdir, dir) < 0)
1111 /* concatenate argv, quoting args as we go */
1112 strbuf_init(&args, 0);
1114 char *quoted = (char *)quote_arg(cmd);
1115 strbuf_addstr(&args, quoted);
1119 for (; *argv; argv++) {
1120 char *quoted = (char *)quote_arg(*argv);
1122 strbuf_addch(&args, ' ');
1123 strbuf_addstr(&args, quoted);
1124 if (quoted != *argv)
1128 ALLOC_ARRAY(wargs, st_add(st_mult(2, args.len), 1));
1129 xutftowcs(wargs, args.buf, 2 * args.len + 1);
1130 strbuf_release(&args);
1132 wenvblk = make_environment_block(deltaenv);
1134 memset(&pi, 0, sizeof(pi));
1135 ret = CreateProcessW(wcmd, wargs, NULL, NULL, TRUE, flags,
1136 wenvblk, dir ? wdir : NULL, &si, &pi);
1145 CloseHandle(pi.hThread);
1148 * The process ID is the human-readable identifier of the process
1149 * that we want to present in log and error messages. The handle
1150 * is not useful for this purpose. But we cannot close it, either,
1151 * because it is not possible to turn a process ID into a process
1152 * handle after the process terminated.
1153 * Keep the handle in a list for waitpid.
1155 EnterCriticalSection(&pinfo_cs);
1157 struct pinfo_t *info = xmalloc(sizeof(struct pinfo_t));
1158 info->pid = pi.dwProcessId;
1159 info->proc = pi.hProcess;
1163 LeaveCriticalSection(&pinfo_cs);
1165 return (pid_t)pi.dwProcessId;
1168 static pid_t mingw_spawnv(const char *cmd, const char **argv, int prepend_cmd)
1170 return mingw_spawnve_fd(cmd, argv, NULL, NULL, prepend_cmd, 0, 1, 2);
1173 pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **deltaenv,
1175 int fhin, int fhout, int fherr)
1178 char *prog = path_lookup(cmd, 0);
1185 const char *interpr = parse_interpreter(prog);
1188 const char *argv0 = argv[0];
1189 char *iprog = path_lookup(interpr, 1);
1196 pid = mingw_spawnve_fd(iprog, argv, deltaenv, dir, 1,
1197 fhin, fhout, fherr);
1203 pid = mingw_spawnve_fd(prog, argv, deltaenv, dir, 0,
1204 fhin, fhout, fherr);
1210 static int try_shell_exec(const char *cmd, char *const *argv)
1212 const char *interpr = parse_interpreter(cmd);
1218 prog = path_lookup(interpr, 1);
1222 while (argv[argc]) argc++;
1223 ALLOC_ARRAY(argv2, argc + 1);
1224 argv2[0] = (char *)cmd; /* full path to the script file */
1225 memcpy(&argv2[1], &argv[1], sizeof(*argv) * argc);
1226 pid = mingw_spawnv(prog, argv2, 1);
1229 if (waitpid(pid, &status, 0) < 0)
1233 pid = 1; /* indicate that we tried but failed */
1240 int mingw_execv(const char *cmd, char *const *argv)
1242 /* check if git_command is a shell script */
1243 if (!try_shell_exec(cmd, argv)) {
1246 pid = mingw_spawnv(cmd, (const char **)argv, 0);
1249 if (waitpid(pid, &status, 0) < 0)
1256 int mingw_execvp(const char *cmd, char *const *argv)
1258 char *prog = path_lookup(cmd, 0);
1261 mingw_execv(prog, argv);
1269 int mingw_kill(pid_t pid, int sig)
1271 if (pid > 0 && sig == SIGTERM) {
1272 HANDLE h = OpenProcess(PROCESS_TERMINATE, FALSE, pid);
1274 if (TerminateProcess(h, -1)) {
1279 errno = err_win_to_posix(GetLastError());
1282 } else if (pid > 0 && sig == 0) {
1283 HANDLE h = OpenProcess(PROCESS_QUERY_INFORMATION, FALSE, pid);
1295 * Compare environment entries by key (i.e. stopping at '=' or '\0').
1297 static int compareenv(const void *v1, const void *v2)
1299 const char *e1 = *(const char**)v1;
1300 const char *e2 = *(const char**)v2;
1305 c1 = (c1 == '=') ? 0 : tolower(c1);
1306 c2 = (c2 == '=') ? 0 : tolower(c2);
1316 static int bsearchenv(char **env, const char *name, size_t size)
1318 unsigned low = 0, high = size;
1319 while (low < high) {
1320 unsigned mid = low + ((high - low) >> 1);
1321 int cmp = compareenv(&env[mid], &name);
1329 return ~low; /* not found, return 1's complement of insert position */
1333 * If name contains '=', then sets the variable, otherwise it unsets it
1334 * Size includes the terminating NULL. Env must have room for size + 1 entries
1335 * (in case of insert). Returns the new size. Optionally frees removed entries.
1337 static int do_putenv(char **env, const char *name, int size, int free_old)
1339 int i = bsearchenv(env, name, size - 1);
1341 /* optionally free removed / replaced entry */
1342 if (i >= 0 && free_old)
1345 if (strchr(name, '=')) {
1346 /* if new value ('key=value') is specified, insert or replace entry */
1349 memmove(&env[i + 1], &env[i], (size - i) * sizeof(char*));
1352 env[i] = (char*) name;
1353 } else if (i >= 0) {
1354 /* otherwise ('key') remove existing entry */
1356 memmove(&env[i], &env[i + 1], (size - i) * sizeof(char*));
1361 char *mingw_getenv(const char *name)
1364 int pos = bsearchenv(environ, name, environ_size - 1);
1367 value = strchr(environ[pos], '=');
1368 return value ? &value[1] : NULL;
1371 int mingw_putenv(const char *namevalue)
1373 ALLOC_GROW(environ, (environ_size + 1) * sizeof(char*), environ_alloc);
1374 environ_size = do_putenv(environ, namevalue, environ_size, 1);
1379 * Note, this isn't a complete replacement for getaddrinfo. It assumes
1380 * that service contains a numerical port, or that it is null. It
1381 * does a simple search using gethostbyname, and returns one IPv4 host
1384 static int WSAAPI getaddrinfo_stub(const char *node, const char *service,
1385 const struct addrinfo *hints,
1386 struct addrinfo **res)
1388 struct hostent *h = NULL;
1389 struct addrinfo *ai;
1390 struct sockaddr_in *sin;
1393 h = gethostbyname(node);
1395 return WSAGetLastError();
1398 ai = xmalloc(sizeof(struct addrinfo));
1401 ai->ai_family = AF_INET;
1402 ai->ai_socktype = hints ? hints->ai_socktype : 0;
1403 switch (ai->ai_socktype) {
1405 ai->ai_protocol = IPPROTO_TCP;
1408 ai->ai_protocol = IPPROTO_UDP;
1411 ai->ai_protocol = 0;
1414 ai->ai_addrlen = sizeof(struct sockaddr_in);
1415 if (hints && (hints->ai_flags & AI_CANONNAME))
1416 ai->ai_canonname = h ? xstrdup(h->h_name) : NULL;
1418 ai->ai_canonname = NULL;
1420 sin = xcalloc(1, ai->ai_addrlen);
1421 sin->sin_family = AF_INET;
1422 /* Note: getaddrinfo is supposed to allow service to be a string,
1423 * which should be looked up using getservbyname. This is
1424 * currently not implemented */
1426 sin->sin_port = htons(atoi(service));
1428 sin->sin_addr = *(struct in_addr *)h->h_addr;
1429 else if (hints && (hints->ai_flags & AI_PASSIVE))
1430 sin->sin_addr.s_addr = INADDR_ANY;
1432 sin->sin_addr.s_addr = INADDR_LOOPBACK;
1433 ai->ai_addr = (struct sockaddr *)sin;
1438 static void WSAAPI freeaddrinfo_stub(struct addrinfo *res)
1440 free(res->ai_canonname);
1445 static int WSAAPI getnameinfo_stub(const struct sockaddr *sa, socklen_t salen,
1446 char *host, DWORD hostlen,
1447 char *serv, DWORD servlen, int flags)
1449 const struct sockaddr_in *sin = (const struct sockaddr_in *)sa;
1450 if (sa->sa_family != AF_INET)
1455 if (host && hostlen > 0) {
1456 struct hostent *ent = NULL;
1457 if (!(flags & NI_NUMERICHOST))
1458 ent = gethostbyaddr((const char *)&sin->sin_addr,
1459 sizeof(sin->sin_addr), AF_INET);
1462 snprintf(host, hostlen, "%s", ent->h_name);
1463 else if (flags & NI_NAMEREQD)
1466 snprintf(host, hostlen, "%s", inet_ntoa(sin->sin_addr));
1469 if (serv && servlen > 0) {
1470 struct servent *ent = NULL;
1471 if (!(flags & NI_NUMERICSERV))
1472 ent = getservbyport(sin->sin_port,
1473 flags & NI_DGRAM ? "udp" : "tcp");
1476 snprintf(serv, servlen, "%s", ent->s_name);
1478 snprintf(serv, servlen, "%d", ntohs(sin->sin_port));
1484 static HMODULE ipv6_dll = NULL;
1485 static void (WSAAPI *ipv6_freeaddrinfo)(struct addrinfo *res);
1486 static int (WSAAPI *ipv6_getaddrinfo)(const char *node, const char *service,
1487 const struct addrinfo *hints,
1488 struct addrinfo **res);
1489 static int (WSAAPI *ipv6_getnameinfo)(const struct sockaddr *sa, socklen_t salen,
1490 char *host, DWORD hostlen,
1491 char *serv, DWORD servlen, int flags);
1493 * gai_strerror is an inline function in the ws2tcpip.h header, so we
1494 * don't need to try to load that one dynamically.
1497 static void socket_cleanup(void)
1501 FreeLibrary(ipv6_dll);
1503 ipv6_freeaddrinfo = freeaddrinfo_stub;
1504 ipv6_getaddrinfo = getaddrinfo_stub;
1505 ipv6_getnameinfo = getnameinfo_stub;
1508 static void ensure_socket_initialization(void)
1511 static int initialized = 0;
1512 const char *libraries[] = { "ws2_32.dll", "wship6.dll", NULL };
1518 if (WSAStartup(MAKEWORD(2,2), &wsa))
1519 die("unable to initialize winsock subsystem, error %d",
1522 for (name = libraries; *name; name++) {
1523 ipv6_dll = LoadLibrary(*name);
1527 ipv6_freeaddrinfo = (void (WSAAPI *)(struct addrinfo *))
1528 GetProcAddress(ipv6_dll, "freeaddrinfo");
1529 ipv6_getaddrinfo = (int (WSAAPI *)(const char *, const char *,
1530 const struct addrinfo *,
1531 struct addrinfo **))
1532 GetProcAddress(ipv6_dll, "getaddrinfo");
1533 ipv6_getnameinfo = (int (WSAAPI *)(const struct sockaddr *,
1534 socklen_t, char *, DWORD,
1535 char *, DWORD, int))
1536 GetProcAddress(ipv6_dll, "getnameinfo");
1537 if (!ipv6_freeaddrinfo || !ipv6_getaddrinfo || !ipv6_getnameinfo) {
1538 FreeLibrary(ipv6_dll);
1543 if (!ipv6_freeaddrinfo || !ipv6_getaddrinfo || !ipv6_getnameinfo) {
1544 ipv6_freeaddrinfo = freeaddrinfo_stub;
1545 ipv6_getaddrinfo = getaddrinfo_stub;
1546 ipv6_getnameinfo = getnameinfo_stub;
1549 atexit(socket_cleanup);
1554 int mingw_gethostname(char *name, int namelen)
1556 ensure_socket_initialization();
1557 return gethostname(name, namelen);
1560 #undef gethostbyname
1561 struct hostent *mingw_gethostbyname(const char *host)
1563 ensure_socket_initialization();
1564 return gethostbyname(host);
1567 void mingw_freeaddrinfo(struct addrinfo *res)
1569 ipv6_freeaddrinfo(res);
1572 int mingw_getaddrinfo(const char *node, const char *service,
1573 const struct addrinfo *hints, struct addrinfo **res)
1575 ensure_socket_initialization();
1576 return ipv6_getaddrinfo(node, service, hints, res);
1579 int mingw_getnameinfo(const struct sockaddr *sa, socklen_t salen,
1580 char *host, DWORD hostlen, char *serv, DWORD servlen,
1583 ensure_socket_initialization();
1584 return ipv6_getnameinfo(sa, salen, host, hostlen, serv, servlen, flags);
1587 int mingw_socket(int domain, int type, int protocol)
1592 ensure_socket_initialization();
1593 s = WSASocket(domain, type, protocol, NULL, 0, 0);
1594 if (s == INVALID_SOCKET) {
1596 * WSAGetLastError() values are regular BSD error codes
1597 * biased by WSABASEERR.
1598 * However, strerror() does not know about networking
1599 * specific errors, which are values beginning at 38 or so.
1600 * Therefore, we choose to leave the biased error code
1601 * in errno so that _if_ someone looks up the code somewhere,
1602 * then it is at least the number that are usually listed.
1604 errno = WSAGetLastError();
1607 /* convert into a file descriptor */
1608 if ((sockfd = _open_osfhandle(s, O_RDWR|O_BINARY)) < 0) {
1610 return error("unable to make a socket file descriptor: %s",
1617 int mingw_connect(int sockfd, struct sockaddr *sa, size_t sz)
1619 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
1620 return connect(s, sa, sz);
1624 int mingw_bind(int sockfd, struct sockaddr *sa, size_t sz)
1626 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
1627 return bind(s, sa, sz);
1631 int mingw_setsockopt(int sockfd, int lvl, int optname, void *optval, int optlen)
1633 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
1634 return setsockopt(s, lvl, optname, (const char*)optval, optlen);
1638 int mingw_shutdown(int sockfd, int how)
1640 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
1641 return shutdown(s, how);
1645 int mingw_listen(int sockfd, int backlog)
1647 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
1648 return listen(s, backlog);
1652 int mingw_accept(int sockfd1, struct sockaddr *sa, socklen_t *sz)
1656 SOCKET s1 = (SOCKET)_get_osfhandle(sockfd1);
1657 SOCKET s2 = accept(s1, sa, sz);
1659 /* convert into a file descriptor */
1660 if ((sockfd2 = _open_osfhandle(s2, O_RDWR|O_BINARY)) < 0) {
1663 return error("unable to make a socket file descriptor: %s",
1670 int mingw_rename(const char *pold, const char *pnew)
1674 wchar_t wpold[MAX_PATH], wpnew[MAX_PATH];
1675 if (xutftowcs_path(wpold, pold) < 0 || xutftowcs_path(wpnew, pnew) < 0)
1679 * Try native rename() first to get errno right.
1680 * It is based on MoveFile(), which cannot overwrite existing files.
1682 if (!_wrename(wpold, wpnew))
1684 if (errno != EEXIST)
1687 if (MoveFileExW(wpold, wpnew, MOVEFILE_REPLACE_EXISTING))
1689 /* TODO: translate more errors */
1690 gle = GetLastError();
1691 if (gle == ERROR_ACCESS_DENIED &&
1692 (attrs = GetFileAttributesW(wpnew)) != INVALID_FILE_ATTRIBUTES) {
1693 if (attrs & FILE_ATTRIBUTE_DIRECTORY) {
1694 DWORD attrsold = GetFileAttributesW(wpold);
1695 if (attrsold == INVALID_FILE_ATTRIBUTES ||
1696 !(attrsold & FILE_ATTRIBUTE_DIRECTORY))
1698 else if (!_wrmdir(wpnew))
1702 if ((attrs & FILE_ATTRIBUTE_READONLY) &&
1703 SetFileAttributesW(wpnew, attrs & ~FILE_ATTRIBUTE_READONLY)) {
1704 if (MoveFileExW(wpold, wpnew, MOVEFILE_REPLACE_EXISTING))
1706 gle = GetLastError();
1707 /* revert file attributes on failure */
1708 SetFileAttributesW(wpnew, attrs);
1711 if (tries < ARRAY_SIZE(delay) && gle == ERROR_ACCESS_DENIED) {
1713 * We assume that some other process had the source or
1714 * destination file open at the wrong moment and retry.
1715 * In order to give the other process a higher chance to
1716 * complete its operation, we give up our time slice now.
1717 * If we have to retry again, we do sleep a bit.
1719 Sleep(delay[tries]);
1723 if (gle == ERROR_ACCESS_DENIED &&
1724 ask_yes_no_if_possible("Rename from '%s' to '%s' failed. "
1725 "Should I try again?", pold, pnew))
1733 * Note that this doesn't return the actual pagesize, but
1734 * the allocation granularity. If future Windows specific git code
1735 * needs the real getpagesize function, we need to find another solution.
1737 int mingw_getpagesize(void)
1741 return si.dwAllocationGranularity;
1744 struct passwd *getpwuid(int uid)
1746 static char user_name[100];
1747 static struct passwd p;
1749 DWORD len = sizeof(user_name);
1750 if (!GetUserName(user_name, &len))
1752 p.pw_name = user_name;
1753 p.pw_gecos = "unknown";
1758 static HANDLE timer_event;
1759 static HANDLE timer_thread;
1760 static int timer_interval;
1761 static int one_shot;
1762 static sig_handler_t timer_fn = SIG_DFL, sigint_fn = SIG_DFL;
1764 /* The timer works like this:
1765 * The thread, ticktack(), is a trivial routine that most of the time
1766 * only waits to receive the signal to terminate. The main thread tells
1767 * the thread to terminate by setting the timer_event to the signalled
1769 * But ticktack() interrupts the wait state after the timer's interval
1770 * length to call the signal handler.
1773 static unsigned __stdcall ticktack(void *dummy)
1775 while (WaitForSingleObject(timer_event, timer_interval) == WAIT_TIMEOUT) {
1776 mingw_raise(SIGALRM);
1783 static int start_timer_thread(void)
1785 timer_event = CreateEvent(NULL, FALSE, FALSE, NULL);
1787 timer_thread = (HANDLE) _beginthreadex(NULL, 0, ticktack, NULL, 0, NULL);
1789 return errno = ENOMEM,
1790 error("cannot start timer thread");
1792 return errno = ENOMEM,
1793 error("cannot allocate resources for timer");
1797 static void stop_timer_thread(void)
1800 SetEvent(timer_event); /* tell thread to terminate */
1802 int rc = WaitForSingleObject(timer_thread, 1000);
1803 if (rc == WAIT_TIMEOUT)
1804 error("timer thread did not terminate timely");
1805 else if (rc != WAIT_OBJECT_0)
1806 error("waiting for timer thread failed: %lu",
1808 CloseHandle(timer_thread);
1811 CloseHandle(timer_event);
1813 timer_thread = NULL;
1816 static inline int is_timeval_eq(const struct timeval *i1, const struct timeval *i2)
1818 return i1->tv_sec == i2->tv_sec && i1->tv_usec == i2->tv_usec;
1821 int setitimer(int type, struct itimerval *in, struct itimerval *out)
1823 static const struct timeval zero;
1824 static int atexit_done;
1827 return errno = EINVAL,
1828 error("setitimer param 3 != NULL not implemented");
1829 if (!is_timeval_eq(&in->it_interval, &zero) &&
1830 !is_timeval_eq(&in->it_interval, &in->it_value))
1831 return errno = EINVAL,
1832 error("setitimer: it_interval must be zero or eq it_value");
1835 stop_timer_thread();
1837 if (is_timeval_eq(&in->it_value, &zero) &&
1838 is_timeval_eq(&in->it_interval, &zero))
1841 timer_interval = in->it_value.tv_sec * 1000 + in->it_value.tv_usec / 1000;
1842 one_shot = is_timeval_eq(&in->it_interval, &zero);
1844 atexit(stop_timer_thread);
1847 return start_timer_thread();
1850 int sigaction(int sig, struct sigaction *in, struct sigaction *out)
1853 return errno = EINVAL,
1854 error("sigaction only implemented for SIGALRM");
1856 return errno = EINVAL,
1857 error("sigaction: param 3 != NULL not implemented");
1859 timer_fn = in->sa_handler;
1864 sig_handler_t mingw_signal(int sig, sig_handler_t handler)
1876 sigint_fn = handler;
1880 return signal(sig, handler);
1887 int mingw_raise(int sig)
1891 if (timer_fn == SIG_DFL) {
1892 if (isatty(STDERR_FILENO))
1893 fputs("Alarm clock\n", stderr);
1894 exit(128 + SIGALRM);
1895 } else if (timer_fn != SIG_IGN)
1900 if (sigint_fn == SIG_DFL)
1902 else if (sigint_fn != SIG_IGN)
1911 int link(const char *oldpath, const char *newpath)
1913 typedef BOOL (WINAPI *T)(LPCWSTR, LPCWSTR, LPSECURITY_ATTRIBUTES);
1914 static T create_hard_link = NULL;
1915 wchar_t woldpath[MAX_PATH], wnewpath[MAX_PATH];
1916 if (xutftowcs_path(woldpath, oldpath) < 0 ||
1917 xutftowcs_path(wnewpath, newpath) < 0)
1920 if (!create_hard_link) {
1921 create_hard_link = (T) GetProcAddress(
1922 GetModuleHandle("kernel32.dll"), "CreateHardLinkW");
1923 if (!create_hard_link)
1924 create_hard_link = (T)-1;
1926 if (create_hard_link == (T)-1) {
1930 if (!create_hard_link(wnewpath, woldpath, NULL)) {
1931 errno = err_win_to_posix(GetLastError());
1937 pid_t waitpid(pid_t pid, int *status, int options)
1939 HANDLE h = OpenProcess(SYNCHRONIZE | PROCESS_QUERY_INFORMATION,
1946 if (pid > 0 && options & WNOHANG) {
1947 if (WAIT_OBJECT_0 != WaitForSingleObject(h, 0)) {
1951 options &= ~WNOHANG;
1955 struct pinfo_t **ppinfo;
1956 if (WaitForSingleObject(h, INFINITE) != WAIT_OBJECT_0) {
1962 GetExitCodeProcess(h, (LPDWORD)status);
1964 EnterCriticalSection(&pinfo_cs);
1968 struct pinfo_t *info = *ppinfo;
1969 if (info->pid == pid) {
1970 CloseHandle(info->proc);
1971 *ppinfo = info->next;
1975 ppinfo = &info->next;
1978 LeaveCriticalSection(&pinfo_cs);
1989 int mingw_has_dos_drive_prefix(const char *path)
1994 * Does it start with an ASCII letter (i.e. highest bit not set),
1995 * followed by a colon?
1997 if (!(0x80 & (unsigned char)*path))
1998 return *path && path[1] == ':' ? 2 : 0;
2001 * While drive letters must be letters of the English alphabet, it is
2002 * possible to assign virtually _any_ Unicode character via `subst` as
2003 * a drive letter to "virtual drives". Even `1`, or `ä`. Or fun stuff
2006 * subst ֍: %USERPROFILE%\Desktop
2008 for (i = 1; i < 4 && (0x80 & (unsigned char)path[i]); i++)
2009 ; /* skip first UTF-8 character */
2010 return path[i] == ':' ? i + 1 : 0;
2013 int mingw_skip_dos_drive_prefix(char **path)
2015 int ret = has_dos_drive_prefix(*path);
2020 int mingw_offset_1st_component(const char *path)
2022 char *pos = (char *)path;
2025 if (!skip_dos_drive_prefix(&pos) &&
2026 is_dir_sep(pos[0]) && is_dir_sep(pos[1])) {
2027 /* skip server name */
2028 pos = strpbrk(pos + 2, "\\/");
2030 return 0; /* Error: malformed unc path */
2034 } while (*pos && !is_dir_sep(*pos));
2037 return pos + is_dir_sep(*pos) - path;
2040 int xutftowcsn(wchar_t *wcs, const char *utfs, size_t wcslen, int utflen)
2042 int upos = 0, wpos = 0;
2043 const unsigned char *utf = (const unsigned char*) utfs;
2044 if (!utf || !wcs || wcslen < 1) {
2048 /* reserve space for \0 */
2053 while (upos < utflen) {
2054 int c = utf[upos++] & 0xff;
2055 if (utflen == INT_MAX && c == 0)
2058 if (wpos >= wcslen) {
2067 } else if (c >= 0xc2 && c < 0xe0 && upos < utflen &&
2068 (utf[upos] & 0xc0) == 0x80) {
2070 c = ((c & 0x1f) << 6);
2071 c |= (utf[upos++] & 0x3f);
2073 } else if (c >= 0xe0 && c < 0xf0 && upos + 1 < utflen &&
2074 !(c == 0xe0 && utf[upos] < 0xa0) && /* over-long encoding */
2075 (utf[upos] & 0xc0) == 0x80 &&
2076 (utf[upos + 1] & 0xc0) == 0x80) {
2078 c = ((c & 0x0f) << 12);
2079 c |= ((utf[upos++] & 0x3f) << 6);
2080 c |= (utf[upos++] & 0x3f);
2082 } else if (c >= 0xf0 && c < 0xf5 && upos + 2 < utflen &&
2083 wpos + 1 < wcslen &&
2084 !(c == 0xf0 && utf[upos] < 0x90) && /* over-long encoding */
2085 !(c == 0xf4 && utf[upos] >= 0x90) && /* > \u10ffff */
2086 (utf[upos] & 0xc0) == 0x80 &&
2087 (utf[upos + 1] & 0xc0) == 0x80 &&
2088 (utf[upos + 2] & 0xc0) == 0x80) {
2089 /* 4-byte utf-8: convert to \ud8xx \udcxx surrogate pair */
2090 c = ((c & 0x07) << 18);
2091 c |= ((utf[upos++] & 0x3f) << 12);
2092 c |= ((utf[upos++] & 0x3f) << 6);
2093 c |= (utf[upos++] & 0x3f);
2095 wcs[wpos++] = 0xd800 | (c >> 10);
2096 wcs[wpos++] = 0xdc00 | (c & 0x3ff);
2097 } else if (c >= 0xa0) {
2098 /* invalid utf-8 byte, printable unicode char: convert 1:1 */
2101 /* invalid utf-8 byte, non-printable unicode: convert to hex */
2102 static const char *hex = "0123456789abcdef";
2103 wcs[wpos++] = hex[c >> 4];
2105 wcs[wpos++] = hex[c & 0x0f];
2112 int xwcstoutf(char *utf, const wchar_t *wcs, size_t utflen)
2114 if (!wcs || !utf || utflen < 1) {
2118 utflen = WideCharToMultiByte(CP_UTF8, 0, wcs, -1, utf, utflen, NULL, NULL);
2125 static void setup_windows_environment(void)
2127 char *tmp = getenv("TMPDIR");
2129 /* on Windows it is TMP and TEMP */
2131 if (!(tmp = getenv("TMP")))
2132 tmp = getenv("TEMP");
2134 setenv("TMPDIR", tmp, 1);
2135 tmp = getenv("TMPDIR");
2141 * Convert all dir separators to forward slashes,
2142 * to help shell commands called from the Git
2143 * executable (by not mistaking the dir separators
2144 * for escape characters).
2146 convert_slashes(tmp);
2149 /* simulate TERM to enable auto-color (see color.c) */
2150 if (!getenv("TERM"))
2151 setenv("TERM", "cygwin", 1);
2154 int is_valid_win32_path(const char *path)
2156 int preceding_space_or_period = 0, i = 0, periods = 0;
2161 skip_dos_drive_prefix((char **)&path);
2167 case '/': case '\\':
2168 /* cannot end in ` ` or `.`, except for `.` and `..` */
2169 if (preceding_space_or_period &&
2170 (i != periods || periods > 2))
2175 i = periods = preceding_space_or_period = 0;
2181 preceding_space_or_period = 1;
2184 case ':': /* DOS drive prefix was already skipped */
2185 case '<': case '>': case '"': case '|': case '?': case '*':
2186 /* illegal character */
2189 if (c > '\0' && c < '\x20')
2190 /* illegal character */
2193 preceding_space_or_period = 0;
2199 * Disable MSVCRT command line wildcard expansion (__getmainargs called from
2200 * mingw startup code, see init.c in mingw runtime).
2208 extern int __wgetmainargs(int *argc, wchar_t ***argv, wchar_t ***env, int glob,
2211 static NORETURN void die_startup(void)
2213 fputs("fatal: not enough memory for initialization", stderr);
2217 static void *malloc_startup(size_t size)
2219 void *result = malloc(size);
2225 static char *wcstoutfdup_startup(char *buffer, const wchar_t *wcs, size_t len)
2227 len = xwcstoutf(buffer, wcs, len) + 1;
2228 return memcpy(malloc_startup(len), buffer, len);
2231 void mingw_startup(void)
2233 int i, maxlen, argc;
2235 wchar_t **wenv, **wargv;
2238 /* get wide char arguments and environment */
2240 if (__wgetmainargs(&argc, &wargv, &wenv, _CRT_glob, &si) < 0)
2243 /* determine size of argv and environ conversion buffer */
2244 maxlen = wcslen(_wpgmptr);
2245 for (i = 1; i < argc; i++)
2246 maxlen = max(maxlen, wcslen(wargv[i]));
2247 for (i = 0; wenv[i]; i++)
2248 maxlen = max(maxlen, wcslen(wenv[i]));
2251 * nedmalloc can't free CRT memory, allocate resizable environment
2252 * list. Note that xmalloc / xmemdupz etc. call getenv, so we cannot
2253 * use it while initializing the environment itself.
2255 environ_size = i + 1;
2256 environ_alloc = alloc_nr(environ_size * sizeof(char*));
2257 environ = malloc_startup(environ_alloc);
2259 /* allocate buffer (wchar_t encodes to max 3 UTF-8 bytes) */
2260 maxlen = 3 * maxlen + 1;
2261 buffer = malloc_startup(maxlen);
2263 /* convert command line arguments and environment to UTF-8 */
2264 __argv[0] = wcstoutfdup_startup(buffer, _wpgmptr, maxlen);
2265 for (i = 1; i < argc; i++)
2266 __argv[i] = wcstoutfdup_startup(buffer, wargv[i], maxlen);
2267 for (i = 0; wenv[i]; i++)
2268 environ[i] = wcstoutfdup_startup(buffer, wenv[i], maxlen);
2272 /* sort environment for O(log n) getenv / putenv */
2273 qsort(environ, i, sizeof(char*), compareenv);
2275 /* fix Windows specific environment settings */
2276 setup_windows_environment();
2278 /* initialize critical section for waitpid pinfo_t list */
2279 InitializeCriticalSection(&pinfo_cs);
2281 /* set up default file mode and file modes for stdin/out/err */
2283 _setmode(_fileno(stdin), _O_BINARY);
2284 _setmode(_fileno(stdout), _O_BINARY);
2285 _setmode(_fileno(stderr), _O_BINARY);
2287 /* initialize Unicode console */
2291 int uname(struct utsname *buf)
2293 unsigned v = (unsigned)GetVersion();
2294 memset(buf, 0, sizeof(*buf));
2295 xsnprintf(buf->sysname, sizeof(buf->sysname), "Windows");
2296 xsnprintf(buf->release, sizeof(buf->release),
2297 "%u.%u", v & 0xff, (v >> 8) & 0xff);
2298 /* assuming NT variants only.. */
2299 xsnprintf(buf->version, sizeof(buf->version),
2300 "%u", (v >> 16) & 0x7fff);