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 int mingw_mkdir(const char *path, int mode)
292 wchar_t wpath[MAX_PATH];
293 if (xutftowcs_path(wpath, path) < 0)
295 ret = _wmkdir(wpath);
299 int mingw_open (const char *filename, int oflags, ...)
304 wchar_t wfilename[MAX_PATH];
306 va_start(args, oflags);
307 mode = va_arg(args, int);
310 if (filename && !strcmp(filename, "/dev/null"))
313 if (xutftowcs_path(wfilename, filename) < 0)
315 fd = _wopen(wfilename, oflags, mode);
317 if (fd < 0 && (oflags & O_ACCMODE) != O_RDONLY && errno == EACCES) {
318 DWORD attrs = GetFileAttributesW(wfilename);
319 if (attrs != INVALID_FILE_ATTRIBUTES && (attrs & FILE_ATTRIBUTE_DIRECTORY))
325 static BOOL WINAPI ctrl_ignore(DWORD type)
331 int mingw_fgetc(FILE *stream)
334 if (!isatty(_fileno(stream)))
335 return fgetc(stream);
337 SetConsoleCtrlHandler(ctrl_ignore, TRUE);
340 if (ch != EOF || GetLastError() != ERROR_OPERATION_ABORTED)
343 /* Ctrl+C was pressed, simulate SIGINT and retry */
346 SetConsoleCtrlHandler(ctrl_ignore, FALSE);
351 FILE *mingw_fopen (const char *filename, const char *otype)
354 wchar_t wfilename[MAX_PATH], wotype[4];
355 if (filename && !strcmp(filename, "/dev/null"))
357 if (xutftowcs_path(wfilename, filename) < 0 ||
358 xutftowcs(wotype, otype, ARRAY_SIZE(wotype)) < 0)
360 file = _wfopen(wfilename, wotype);
364 FILE *mingw_freopen (const char *filename, const char *otype, FILE *stream)
367 wchar_t wfilename[MAX_PATH], wotype[4];
368 if (filename && !strcmp(filename, "/dev/null"))
370 if (xutftowcs_path(wfilename, filename) < 0 ||
371 xutftowcs(wotype, otype, ARRAY_SIZE(wotype)) < 0)
373 file = _wfreopen(wfilename, wotype, stream);
378 int mingw_fflush(FILE *stream)
380 int ret = fflush(stream);
383 * write() is used behind the scenes of stdio output functions.
384 * Since git code does not check for errors after each stdio write
385 * operation, it can happen that write() is called by a later
386 * stdio function even if an earlier write() call failed. In the
387 * case of a pipe whose readable end was closed, only the first
388 * call to write() reports EPIPE on Windows. Subsequent write()
389 * calls report EINVAL. It is impossible to notice whether this
390 * fflush invocation triggered such a case, therefore, we have to
391 * catch all EINVAL errors whole-sale.
393 if (ret && errno == EINVAL)
400 ssize_t mingw_write(int fd, const void *buf, size_t len)
402 ssize_t result = write(fd, buf, len);
404 if (result < 0 && errno == EINVAL && buf) {
405 /* check if fd is a pipe */
406 HANDLE h = (HANDLE) _get_osfhandle(fd);
407 if (GetFileType(h) == FILE_TYPE_PIPE)
416 int mingw_access(const char *filename, int mode)
418 wchar_t wfilename[MAX_PATH];
419 if (xutftowcs_path(wfilename, filename) < 0)
421 /* X_OK is not supported by the MSVCRT version */
422 return _waccess(wfilename, mode & ~X_OK);
425 int mingw_chdir(const char *dirname)
427 wchar_t wdirname[MAX_PATH];
428 if (xutftowcs_path(wdirname, dirname) < 0)
430 return _wchdir(wdirname);
433 int mingw_chmod(const char *filename, int mode)
435 wchar_t wfilename[MAX_PATH];
436 if (xutftowcs_path(wfilename, filename) < 0)
438 return _wchmod(wfilename, mode);
442 * The unit of FILETIME is 100-nanoseconds since January 1, 1601, UTC.
443 * Returns the 100-nanoseconds ("hekto nanoseconds") since the epoch.
445 static inline long long filetime_to_hnsec(const FILETIME *ft)
447 long long winTime = ((long long)ft->dwHighDateTime << 32) + ft->dwLowDateTime;
448 /* Windows to Unix Epoch conversion */
449 return winTime - 116444736000000000LL;
452 static inline time_t filetime_to_time_t(const FILETIME *ft)
454 return (time_t)(filetime_to_hnsec(ft) / 10000000);
458 * Verifies that safe_create_leading_directories() would succeed.
460 static int has_valid_directory_prefix(wchar_t *wfilename)
462 int n = wcslen(wfilename);
465 wchar_t c = wfilename[--n];
471 wfilename[n] = L'\0';
472 attributes = GetFileAttributesW(wfilename);
474 if (attributes == FILE_ATTRIBUTE_DIRECTORY ||
475 attributes == FILE_ATTRIBUTE_DEVICE)
477 if (attributes == INVALID_FILE_ATTRIBUTES)
478 switch (GetLastError()) {
479 case ERROR_PATH_NOT_FOUND:
481 case ERROR_FILE_NOT_FOUND:
482 /* This implies parent directory exists. */
490 /* We keep the do_lstat code in a separate function to avoid recursion.
491 * When a path ends with a slash, the stat will fail with ENOENT. In
492 * this case, we strip the trailing slashes and stat again.
494 * If follow is true then act like stat() and report on the link
495 * target. Otherwise report on the link itself.
497 static int do_lstat(int follow, const char *file_name, struct stat *buf)
499 WIN32_FILE_ATTRIBUTE_DATA fdata;
500 wchar_t wfilename[MAX_PATH];
501 if (xutftowcs_path(wfilename, file_name) < 0)
504 if (GetFileAttributesExW(wfilename, GetFileExInfoStandard, &fdata)) {
509 buf->st_mode = file_attr_to_st_mode(fdata.dwFileAttributes);
510 buf->st_size = fdata.nFileSizeLow |
511 (((off_t)fdata.nFileSizeHigh)<<32);
512 buf->st_dev = buf->st_rdev = 0; /* not used by Git */
513 buf->st_atime = filetime_to_time_t(&(fdata.ftLastAccessTime));
514 buf->st_mtime = filetime_to_time_t(&(fdata.ftLastWriteTime));
515 buf->st_ctime = filetime_to_time_t(&(fdata.ftCreationTime));
516 if (fdata.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) {
517 WIN32_FIND_DATAW findbuf;
518 HANDLE handle = FindFirstFileW(wfilename, &findbuf);
519 if (handle != INVALID_HANDLE_VALUE) {
520 if ((findbuf.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) &&
521 (findbuf.dwReserved0 == IO_REPARSE_TAG_SYMLINK)) {
523 char buffer[MAXIMUM_REPARSE_DATA_BUFFER_SIZE];
524 buf->st_size = readlink(file_name, buffer, MAXIMUM_REPARSE_DATA_BUFFER_SIZE);
526 buf->st_mode = S_IFLNK;
528 buf->st_mode |= S_IREAD;
529 if (!(findbuf.dwFileAttributes & FILE_ATTRIBUTE_READONLY))
530 buf->st_mode |= S_IWRITE;
537 switch (GetLastError()) {
538 case ERROR_ACCESS_DENIED:
539 case ERROR_SHARING_VIOLATION:
540 case ERROR_LOCK_VIOLATION:
541 case ERROR_SHARING_BUFFER_EXCEEDED:
544 case ERROR_BUFFER_OVERFLOW:
545 errno = ENAMETOOLONG;
547 case ERROR_NOT_ENOUGH_MEMORY:
550 case ERROR_PATH_NOT_FOUND:
551 if (!has_valid_directory_prefix(wfilename)) {
563 /* We provide our own lstat/fstat functions, since the provided
564 * lstat/fstat functions are so slow. These stat functions are
565 * tailored for Git's usage (read: fast), and are not meant to be
566 * complete. Note that Git stat()s are redirected to mingw_lstat()
567 * too, since Windows doesn't really handle symlinks that well.
569 static int do_stat_internal(int follow, const char *file_name, struct stat *buf)
572 char alt_name[PATH_MAX];
574 if (!do_lstat(follow, file_name, buf))
577 /* if file_name ended in a '/', Windows returned ENOENT;
578 * try again without trailing slashes
583 namelen = strlen(file_name);
584 if (namelen && file_name[namelen-1] != '/')
586 while (namelen && file_name[namelen-1] == '/')
588 if (!namelen || namelen >= PATH_MAX)
591 memcpy(alt_name, file_name, namelen);
592 alt_name[namelen] = 0;
593 return do_lstat(follow, alt_name, buf);
596 int mingw_lstat(const char *file_name, struct stat *buf)
598 return do_stat_internal(0, file_name, buf);
600 int mingw_stat(const char *file_name, struct stat *buf)
602 return do_stat_internal(1, file_name, buf);
605 int mingw_fstat(int fd, struct stat *buf)
607 HANDLE fh = (HANDLE)_get_osfhandle(fd);
608 BY_HANDLE_FILE_INFORMATION fdata;
610 if (fh == INVALID_HANDLE_VALUE) {
614 /* direct non-file handles to MS's fstat() */
615 if (GetFileType(fh) != FILE_TYPE_DISK)
616 return _fstati64(fd, buf);
618 if (GetFileInformationByHandle(fh, &fdata)) {
623 buf->st_mode = file_attr_to_st_mode(fdata.dwFileAttributes);
624 buf->st_size = fdata.nFileSizeLow |
625 (((off_t)fdata.nFileSizeHigh)<<32);
626 buf->st_dev = buf->st_rdev = 0; /* not used by Git */
627 buf->st_atime = filetime_to_time_t(&(fdata.ftLastAccessTime));
628 buf->st_mtime = filetime_to_time_t(&(fdata.ftLastWriteTime));
629 buf->st_ctime = filetime_to_time_t(&(fdata.ftCreationTime));
636 static inline void time_t_to_filetime(time_t t, FILETIME *ft)
638 long long winTime = t * 10000000LL + 116444736000000000LL;
639 ft->dwLowDateTime = winTime;
640 ft->dwHighDateTime = winTime >> 32;
643 int mingw_utime (const char *file_name, const struct utimbuf *times)
648 wchar_t wfilename[MAX_PATH];
649 if (xutftowcs_path(wfilename, file_name) < 0)
652 /* must have write permission */
653 attrs = GetFileAttributesW(wfilename);
654 if (attrs != INVALID_FILE_ATTRIBUTES &&
655 (attrs & FILE_ATTRIBUTE_READONLY)) {
656 /* ignore errors here; open() will report them */
657 SetFileAttributesW(wfilename, attrs & ~FILE_ATTRIBUTE_READONLY);
660 if ((fh = _wopen(wfilename, O_RDWR | O_BINARY)) < 0) {
666 time_t_to_filetime(times->modtime, &mft);
667 time_t_to_filetime(times->actime, &aft);
669 GetSystemTimeAsFileTime(&mft);
672 if (!SetFileTime((HANDLE)_get_osfhandle(fh), NULL, &aft, &mft)) {
680 if (attrs != INVALID_FILE_ATTRIBUTES &&
681 (attrs & FILE_ATTRIBUTE_READONLY)) {
682 /* ignore errors again */
683 SetFileAttributesW(wfilename, attrs);
688 unsigned int sleep (unsigned int seconds)
694 char *mingw_mktemp(char *template)
696 wchar_t wtemplate[MAX_PATH];
697 if (xutftowcs_path(wtemplate, template) < 0)
699 if (!_wmktemp(wtemplate))
701 if (xwcstoutf(template, wtemplate, strlen(template) + 1) < 0)
706 int mkstemp(char *template)
708 char *filename = mktemp(template);
709 if (filename == NULL)
711 return open(filename, O_RDWR | O_CREAT, 0600);
714 int gettimeofday(struct timeval *tv, void *tz)
719 GetSystemTimeAsFileTime(&ft);
720 hnsec = filetime_to_hnsec(&ft);
721 tv->tv_sec = hnsec / 10000000;
722 tv->tv_usec = (hnsec % 10000000) / 10;
726 int pipe(int filedes[2])
730 /* this creates non-inheritable handles */
731 if (!CreatePipe(&h[0], &h[1], NULL, 8192)) {
732 errno = err_win_to_posix(GetLastError());
735 filedes[0] = _open_osfhandle(HCAST(int, h[0]), O_NOINHERIT);
736 if (filedes[0] < 0) {
741 filedes[1] = _open_osfhandle(HCAST(int, h[1]), O_NOINHERIT);
742 if (filedes[1] < 0) {
750 struct tm *gmtime_r(const time_t *timep, struct tm *result)
752 /* gmtime() in MSVCRT.DLL is thread-safe, but not reentrant */
753 memcpy(result, gmtime(timep), sizeof(struct tm));
757 struct tm *localtime_r(const time_t *timep, struct tm *result)
759 /* localtime() in MSVCRT.DLL is thread-safe, but not reentrant */
760 memcpy(result, localtime(timep), sizeof(struct tm));
764 char *mingw_getcwd(char *pointer, int len)
766 wchar_t wpointer[MAX_PATH];
767 if (!_wgetcwd(wpointer, ARRAY_SIZE(wpointer)))
769 if (xwcstoutf(pointer, wpointer, len) < 0)
771 convert_slashes(pointer);
776 * See http://msdn2.microsoft.com/en-us/library/17w5ykft(vs.71).aspx
777 * (Parsing C++ Command-Line Arguments)
779 static const char *quote_arg(const char *arg)
781 /* count chars to quote */
783 int force_quotes = 0;
786 if (!*p) force_quotes = 1;
788 if (isspace(*p) || *p == '*' || *p == '?' || *p == '{' || *p == '\'')
792 else if (*p == '\\') {
806 if (!force_quotes && n == 0)
809 /* insert \ where necessary */
810 d = q = xmalloc(st_add3(len, n, 3));
815 else if (*arg == '\\') {
817 while (*arg == '\\') {
834 static const char *parse_interpreter(const char *cmd)
836 static char buf[100];
840 /* don't even try a .exe */
842 if (n >= 4 && !strcasecmp(cmd+n-4, ".exe"))
845 fd = open(cmd, O_RDONLY);
848 n = read(fd, buf, sizeof(buf)-1);
850 if (n < 4) /* at least '#!/x' and not error */
853 if (buf[0] != '#' || buf[1] != '!')
856 p = buf + strcspn(buf, "\r\n");
861 if (!(p = strrchr(buf+2, '/')) && !(p = strrchr(buf+2, '\\')))
864 if ((opt = strchr(p+1, ' ')))
870 * Splits the PATH into parts.
872 static char **get_path_split(void)
874 char *p, **path, *envpath = mingw_getenv("PATH");
877 if (!envpath || !*envpath)
880 envpath = xstrdup(envpath);
886 if (*dir) { /* not earlier, catches series of ; */
893 ALLOC_ARRAY(path, n + 1);
898 path[i++] = xstrdup(p);
908 static void free_path_split(char **path)
921 * exe_only means that we only want to detect .exe files, but not scripts
922 * (which do not have an extension)
924 static char *lookup_prog(const char *dir, const char *cmd, int isexe, int exe_only)
927 snprintf(path, sizeof(path), "%s/%s.exe", dir, cmd);
929 if (!isexe && access(path, F_OK) == 0)
930 return xstrdup(path);
931 path[strlen(path)-4] = '\0';
932 if ((!exe_only || isexe) && access(path, F_OK) == 0)
933 if (!(GetFileAttributes(path) & FILE_ATTRIBUTE_DIRECTORY))
934 return xstrdup(path);
939 * Determines the absolute path of cmd using the split path in path.
940 * If cmd contains a slash or backslash, no lookup is performed.
942 static char *path_lookup(const char *cmd, char **path, int exe_only)
945 int len = strlen(cmd);
946 int isexe = len >= 4 && !strcasecmp(cmd+len-4, ".exe");
948 if (strchr(cmd, '/') || strchr(cmd, '\\'))
951 while (!prog && *path)
952 prog = lookup_prog(*path++, cmd, isexe, exe_only);
957 static int do_putenv(char **env, const char *name, int size, int free_old);
959 /* used number of elements of environ array, including terminating NULL */
960 static int environ_size = 0;
961 /* allocated size of environ array, in bytes */
962 static int environ_alloc = 0;
965 * Create environment block suitable for CreateProcess. Merges current
966 * process environment and the supplied environment changes.
968 static wchar_t *make_environment_block(char **deltaenv)
970 wchar_t *wenvblk = NULL;
972 int i = 0, size = environ_size, wenvsz = 0, wenvpos = 0;
974 while (deltaenv && deltaenv[i])
977 /* copy the environment, leaving space for changes */
978 ALLOC_ARRAY(tmpenv, size + i);
979 memcpy(tmpenv, environ, size * sizeof(char*));
981 /* merge supplied environment changes into the temporary environment */
982 for (i = 0; deltaenv && deltaenv[i]; i++)
983 size = do_putenv(tmpenv, deltaenv[i], size, 0);
985 /* create environment block from temporary environment */
986 for (i = 0; tmpenv[i]; i++) {
987 size = 2 * strlen(tmpenv[i]) + 2; /* +2 for final \0 */
988 ALLOC_GROW(wenvblk, (wenvpos + size) * sizeof(wchar_t), wenvsz);
989 wenvpos += xutftowcs(&wenvblk[wenvpos], tmpenv[i], size) + 1;
991 /* add final \0 terminator */
992 wenvblk[wenvpos] = 0;
998 struct pinfo_t *next;
1002 static struct pinfo_t *pinfo = NULL;
1003 CRITICAL_SECTION pinfo_cs;
1005 static pid_t mingw_spawnve_fd(const char *cmd, const char **argv, char **deltaenv,
1007 int prepend_cmd, int fhin, int fhout, int fherr)
1010 PROCESS_INFORMATION pi;
1012 wchar_t wcmd[MAX_PATH], wdir[MAX_PATH], *wargs, *wenvblk = NULL;
1013 unsigned flags = CREATE_UNICODE_ENVIRONMENT;
1016 /* Determine whether or not we are associated to a console */
1017 HANDLE cons = CreateFile("CONOUT$", GENERIC_WRITE,
1018 FILE_SHARE_WRITE, NULL, OPEN_EXISTING,
1019 FILE_ATTRIBUTE_NORMAL, NULL);
1020 if (cons == INVALID_HANDLE_VALUE) {
1021 /* There is no console associated with this process.
1022 * Since the child is a console process, Windows
1023 * would normally create a console window. But
1024 * since we'll be redirecting std streams, we do
1025 * not need the console.
1026 * It is necessary to use DETACHED_PROCESS
1027 * instead of CREATE_NO_WINDOW to make ssh
1028 * recognize that it has no console.
1030 flags |= DETACHED_PROCESS;
1032 /* There is already a console. If we specified
1033 * DETACHED_PROCESS here, too, Windows would
1034 * disassociate the child from the console.
1035 * The same is true for CREATE_NO_WINDOW.
1040 memset(&si, 0, sizeof(si));
1042 si.dwFlags = STARTF_USESTDHANDLES;
1043 si.hStdInput = winansi_get_osfhandle(fhin);
1044 si.hStdOutput = winansi_get_osfhandle(fhout);
1045 si.hStdError = winansi_get_osfhandle(fherr);
1047 if (xutftowcs_path(wcmd, cmd) < 0)
1049 if (dir && xutftowcs_path(wdir, dir) < 0)
1052 /* concatenate argv, quoting args as we go */
1053 strbuf_init(&args, 0);
1055 char *quoted = (char *)quote_arg(cmd);
1056 strbuf_addstr(&args, quoted);
1060 for (; *argv; argv++) {
1061 char *quoted = (char *)quote_arg(*argv);
1063 strbuf_addch(&args, ' ');
1064 strbuf_addstr(&args, quoted);
1065 if (quoted != *argv)
1069 ALLOC_ARRAY(wargs, st_add(st_mult(2, args.len), 1));
1070 xutftowcs(wargs, args.buf, 2 * args.len + 1);
1071 strbuf_release(&args);
1073 wenvblk = make_environment_block(deltaenv);
1075 memset(&pi, 0, sizeof(pi));
1076 ret = CreateProcessW(wcmd, wargs, NULL, NULL, TRUE, flags,
1077 wenvblk, dir ? wdir : NULL, &si, &pi);
1086 CloseHandle(pi.hThread);
1089 * The process ID is the human-readable identifier of the process
1090 * that we want to present in log and error messages. The handle
1091 * is not useful for this purpose. But we cannot close it, either,
1092 * because it is not possible to turn a process ID into a process
1093 * handle after the process terminated.
1094 * Keep the handle in a list for waitpid.
1096 EnterCriticalSection(&pinfo_cs);
1098 struct pinfo_t *info = xmalloc(sizeof(struct pinfo_t));
1099 info->pid = pi.dwProcessId;
1100 info->proc = pi.hProcess;
1104 LeaveCriticalSection(&pinfo_cs);
1106 return (pid_t)pi.dwProcessId;
1109 static pid_t mingw_spawnv(const char *cmd, const char **argv, int prepend_cmd)
1111 return mingw_spawnve_fd(cmd, argv, NULL, NULL, prepend_cmd, 0, 1, 2);
1114 pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **deltaenv,
1116 int fhin, int fhout, int fherr)
1119 char **path = get_path_split();
1120 char *prog = path_lookup(cmd, path, 0);
1127 const char *interpr = parse_interpreter(prog);
1130 const char *argv0 = argv[0];
1131 char *iprog = path_lookup(interpr, path, 1);
1138 pid = mingw_spawnve_fd(iprog, argv, deltaenv, dir, 1,
1139 fhin, fhout, fherr);
1145 pid = mingw_spawnve_fd(prog, argv, deltaenv, dir, 0,
1146 fhin, fhout, fherr);
1149 free_path_split(path);
1153 static int try_shell_exec(const char *cmd, char *const *argv)
1155 const char *interpr = parse_interpreter(cmd);
1162 path = get_path_split();
1163 prog = path_lookup(interpr, path, 1);
1167 while (argv[argc]) argc++;
1168 ALLOC_ARRAY(argv2, argc + 1);
1169 argv2[0] = (char *)cmd; /* full path to the script file */
1170 memcpy(&argv2[1], &argv[1], sizeof(*argv) * argc);
1171 pid = mingw_spawnv(prog, argv2, 1);
1174 if (waitpid(pid, &status, 0) < 0)
1178 pid = 1; /* indicate that we tried but failed */
1182 free_path_split(path);
1186 int mingw_execv(const char *cmd, char *const *argv)
1188 /* check if git_command is a shell script */
1189 if (!try_shell_exec(cmd, argv)) {
1192 pid = mingw_spawnv(cmd, (const char **)argv, 0);
1195 if (waitpid(pid, &status, 0) < 0)
1202 int mingw_execvp(const char *cmd, char *const *argv)
1204 char **path = get_path_split();
1205 char *prog = path_lookup(cmd, path, 0);
1208 mingw_execv(prog, argv);
1213 free_path_split(path);
1217 int mingw_kill(pid_t pid, int sig)
1219 if (pid > 0 && sig == SIGTERM) {
1220 HANDLE h = OpenProcess(PROCESS_TERMINATE, FALSE, pid);
1222 if (TerminateProcess(h, -1)) {
1227 errno = err_win_to_posix(GetLastError());
1230 } else if (pid > 0 && sig == 0) {
1231 HANDLE h = OpenProcess(PROCESS_QUERY_INFORMATION, FALSE, pid);
1243 * Compare environment entries by key (i.e. stopping at '=' or '\0').
1245 static int compareenv(const void *v1, const void *v2)
1247 const char *e1 = *(const char**)v1;
1248 const char *e2 = *(const char**)v2;
1253 c1 = (c1 == '=') ? 0 : tolower(c1);
1254 c2 = (c2 == '=') ? 0 : tolower(c2);
1264 static int bsearchenv(char **env, const char *name, size_t size)
1266 unsigned low = 0, high = size;
1267 while (low < high) {
1268 unsigned mid = low + ((high - low) >> 1);
1269 int cmp = compareenv(&env[mid], &name);
1277 return ~low; /* not found, return 1's complement of insert position */
1281 * If name contains '=', then sets the variable, otherwise it unsets it
1282 * Size includes the terminating NULL. Env must have room for size + 1 entries
1283 * (in case of insert). Returns the new size. Optionally frees removed entries.
1285 static int do_putenv(char **env, const char *name, int size, int free_old)
1287 int i = bsearchenv(env, name, size - 1);
1289 /* optionally free removed / replaced entry */
1290 if (i >= 0 && free_old)
1293 if (strchr(name, '=')) {
1294 /* if new value ('key=value') is specified, insert or replace entry */
1297 memmove(&env[i + 1], &env[i], (size - i) * sizeof(char*));
1300 env[i] = (char*) name;
1301 } else if (i >= 0) {
1302 /* otherwise ('key') remove existing entry */
1304 memmove(&env[i], &env[i + 1], (size - i) * sizeof(char*));
1309 char *mingw_getenv(const char *name)
1312 int pos = bsearchenv(environ, name, environ_size - 1);
1315 value = strchr(environ[pos], '=');
1316 return value ? &value[1] : NULL;
1319 int mingw_putenv(const char *namevalue)
1321 ALLOC_GROW(environ, (environ_size + 1) * sizeof(char*), environ_alloc);
1322 environ_size = do_putenv(environ, namevalue, environ_size, 1);
1327 * Note, this isn't a complete replacement for getaddrinfo. It assumes
1328 * that service contains a numerical port, or that it is null. It
1329 * does a simple search using gethostbyname, and returns one IPv4 host
1332 static int WSAAPI getaddrinfo_stub(const char *node, const char *service,
1333 const struct addrinfo *hints,
1334 struct addrinfo **res)
1336 struct hostent *h = NULL;
1337 struct addrinfo *ai;
1338 struct sockaddr_in *sin;
1341 h = gethostbyname(node);
1343 return WSAGetLastError();
1346 ai = xmalloc(sizeof(struct addrinfo));
1349 ai->ai_family = AF_INET;
1350 ai->ai_socktype = hints ? hints->ai_socktype : 0;
1351 switch (ai->ai_socktype) {
1353 ai->ai_protocol = IPPROTO_TCP;
1356 ai->ai_protocol = IPPROTO_UDP;
1359 ai->ai_protocol = 0;
1362 ai->ai_addrlen = sizeof(struct sockaddr_in);
1363 if (hints && (hints->ai_flags & AI_CANONNAME))
1364 ai->ai_canonname = h ? xstrdup(h->h_name) : NULL;
1366 ai->ai_canonname = NULL;
1368 sin = xcalloc(1, ai->ai_addrlen);
1369 sin->sin_family = AF_INET;
1370 /* Note: getaddrinfo is supposed to allow service to be a string,
1371 * which should be looked up using getservbyname. This is
1372 * currently not implemented */
1374 sin->sin_port = htons(atoi(service));
1376 sin->sin_addr = *(struct in_addr *)h->h_addr;
1377 else if (hints && (hints->ai_flags & AI_PASSIVE))
1378 sin->sin_addr.s_addr = INADDR_ANY;
1380 sin->sin_addr.s_addr = INADDR_LOOPBACK;
1381 ai->ai_addr = (struct sockaddr *)sin;
1386 static void WSAAPI freeaddrinfo_stub(struct addrinfo *res)
1388 free(res->ai_canonname);
1393 static int WSAAPI getnameinfo_stub(const struct sockaddr *sa, socklen_t salen,
1394 char *host, DWORD hostlen,
1395 char *serv, DWORD servlen, int flags)
1397 const struct sockaddr_in *sin = (const struct sockaddr_in *)sa;
1398 if (sa->sa_family != AF_INET)
1403 if (host && hostlen > 0) {
1404 struct hostent *ent = NULL;
1405 if (!(flags & NI_NUMERICHOST))
1406 ent = gethostbyaddr((const char *)&sin->sin_addr,
1407 sizeof(sin->sin_addr), AF_INET);
1410 snprintf(host, hostlen, "%s", ent->h_name);
1411 else if (flags & NI_NAMEREQD)
1414 snprintf(host, hostlen, "%s", inet_ntoa(sin->sin_addr));
1417 if (serv && servlen > 0) {
1418 struct servent *ent = NULL;
1419 if (!(flags & NI_NUMERICSERV))
1420 ent = getservbyport(sin->sin_port,
1421 flags & NI_DGRAM ? "udp" : "tcp");
1424 snprintf(serv, servlen, "%s", ent->s_name);
1426 snprintf(serv, servlen, "%d", ntohs(sin->sin_port));
1432 static HMODULE ipv6_dll = NULL;
1433 static void (WSAAPI *ipv6_freeaddrinfo)(struct addrinfo *res);
1434 static int (WSAAPI *ipv6_getaddrinfo)(const char *node, const char *service,
1435 const struct addrinfo *hints,
1436 struct addrinfo **res);
1437 static int (WSAAPI *ipv6_getnameinfo)(const struct sockaddr *sa, socklen_t salen,
1438 char *host, DWORD hostlen,
1439 char *serv, DWORD servlen, int flags);
1441 * gai_strerror is an inline function in the ws2tcpip.h header, so we
1442 * don't need to try to load that one dynamically.
1445 static void socket_cleanup(void)
1449 FreeLibrary(ipv6_dll);
1451 ipv6_freeaddrinfo = freeaddrinfo_stub;
1452 ipv6_getaddrinfo = getaddrinfo_stub;
1453 ipv6_getnameinfo = getnameinfo_stub;
1456 static void ensure_socket_initialization(void)
1459 static int initialized = 0;
1460 const char *libraries[] = { "ws2_32.dll", "wship6.dll", NULL };
1466 if (WSAStartup(MAKEWORD(2,2), &wsa))
1467 die("unable to initialize winsock subsystem, error %d",
1470 for (name = libraries; *name; name++) {
1471 ipv6_dll = LoadLibrary(*name);
1475 ipv6_freeaddrinfo = (void (WSAAPI *)(struct addrinfo *))
1476 GetProcAddress(ipv6_dll, "freeaddrinfo");
1477 ipv6_getaddrinfo = (int (WSAAPI *)(const char *, const char *,
1478 const struct addrinfo *,
1479 struct addrinfo **))
1480 GetProcAddress(ipv6_dll, "getaddrinfo");
1481 ipv6_getnameinfo = (int (WSAAPI *)(const struct sockaddr *,
1482 socklen_t, char *, DWORD,
1483 char *, DWORD, int))
1484 GetProcAddress(ipv6_dll, "getnameinfo");
1485 if (!ipv6_freeaddrinfo || !ipv6_getaddrinfo || !ipv6_getnameinfo) {
1486 FreeLibrary(ipv6_dll);
1491 if (!ipv6_freeaddrinfo || !ipv6_getaddrinfo || !ipv6_getnameinfo) {
1492 ipv6_freeaddrinfo = freeaddrinfo_stub;
1493 ipv6_getaddrinfo = getaddrinfo_stub;
1494 ipv6_getnameinfo = getnameinfo_stub;
1497 atexit(socket_cleanup);
1502 int mingw_gethostname(char *name, int namelen)
1504 ensure_socket_initialization();
1505 return gethostname(name, namelen);
1508 #undef gethostbyname
1509 struct hostent *mingw_gethostbyname(const char *host)
1511 ensure_socket_initialization();
1512 return gethostbyname(host);
1515 void mingw_freeaddrinfo(struct addrinfo *res)
1517 ipv6_freeaddrinfo(res);
1520 int mingw_getaddrinfo(const char *node, const char *service,
1521 const struct addrinfo *hints, struct addrinfo **res)
1523 ensure_socket_initialization();
1524 return ipv6_getaddrinfo(node, service, hints, res);
1527 int mingw_getnameinfo(const struct sockaddr *sa, socklen_t salen,
1528 char *host, DWORD hostlen, char *serv, DWORD servlen,
1531 ensure_socket_initialization();
1532 return ipv6_getnameinfo(sa, salen, host, hostlen, serv, servlen, flags);
1535 int mingw_socket(int domain, int type, int protocol)
1540 ensure_socket_initialization();
1541 s = WSASocket(domain, type, protocol, NULL, 0, 0);
1542 if (s == INVALID_SOCKET) {
1544 * WSAGetLastError() values are regular BSD error codes
1545 * biased by WSABASEERR.
1546 * However, strerror() does not know about networking
1547 * specific errors, which are values beginning at 38 or so.
1548 * Therefore, we choose to leave the biased error code
1549 * in errno so that _if_ someone looks up the code somewhere,
1550 * then it is at least the number that are usually listed.
1552 errno = WSAGetLastError();
1555 /* convert into a file descriptor */
1556 if ((sockfd = _open_osfhandle(s, O_RDWR|O_BINARY)) < 0) {
1558 return error("unable to make a socket file descriptor: %s",
1565 int mingw_connect(int sockfd, struct sockaddr *sa, size_t sz)
1567 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
1568 return connect(s, sa, sz);
1572 int mingw_bind(int sockfd, struct sockaddr *sa, size_t sz)
1574 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
1575 return bind(s, sa, sz);
1579 int mingw_setsockopt(int sockfd, int lvl, int optname, void *optval, int optlen)
1581 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
1582 return setsockopt(s, lvl, optname, (const char*)optval, optlen);
1586 int mingw_shutdown(int sockfd, int how)
1588 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
1589 return shutdown(s, how);
1593 int mingw_listen(int sockfd, int backlog)
1595 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
1596 return listen(s, backlog);
1600 int mingw_accept(int sockfd1, struct sockaddr *sa, socklen_t *sz)
1604 SOCKET s1 = (SOCKET)_get_osfhandle(sockfd1);
1605 SOCKET s2 = accept(s1, sa, sz);
1607 /* convert into a file descriptor */
1608 if ((sockfd2 = _open_osfhandle(s2, O_RDWR|O_BINARY)) < 0) {
1611 return error("unable to make a socket file descriptor: %s",
1618 int mingw_rename(const char *pold, const char *pnew)
1622 wchar_t wpold[MAX_PATH], wpnew[MAX_PATH];
1623 if (xutftowcs_path(wpold, pold) < 0 || xutftowcs_path(wpnew, pnew) < 0)
1627 * Try native rename() first to get errno right.
1628 * It is based on MoveFile(), which cannot overwrite existing files.
1630 if (!_wrename(wpold, wpnew))
1632 if (errno != EEXIST)
1635 if (MoveFileExW(wpold, wpnew, MOVEFILE_REPLACE_EXISTING))
1637 /* TODO: translate more errors */
1638 gle = GetLastError();
1639 if (gle == ERROR_ACCESS_DENIED &&
1640 (attrs = GetFileAttributesW(wpnew)) != INVALID_FILE_ATTRIBUTES) {
1641 if (attrs & FILE_ATTRIBUTE_DIRECTORY) {
1642 DWORD attrsold = GetFileAttributesW(wpold);
1643 if (attrsold == INVALID_FILE_ATTRIBUTES ||
1644 !(attrsold & FILE_ATTRIBUTE_DIRECTORY))
1646 else if (!_wrmdir(wpnew))
1650 if ((attrs & FILE_ATTRIBUTE_READONLY) &&
1651 SetFileAttributesW(wpnew, attrs & ~FILE_ATTRIBUTE_READONLY)) {
1652 if (MoveFileExW(wpold, wpnew, MOVEFILE_REPLACE_EXISTING))
1654 gle = GetLastError();
1655 /* revert file attributes on failure */
1656 SetFileAttributesW(wpnew, attrs);
1659 if (tries < ARRAY_SIZE(delay) && gle == ERROR_ACCESS_DENIED) {
1661 * We assume that some other process had the source or
1662 * destination file open at the wrong moment and retry.
1663 * In order to give the other process a higher chance to
1664 * complete its operation, we give up our time slice now.
1665 * If we have to retry again, we do sleep a bit.
1667 Sleep(delay[tries]);
1671 if (gle == ERROR_ACCESS_DENIED &&
1672 ask_yes_no_if_possible("Rename from '%s' to '%s' failed. "
1673 "Should I try again?", pold, pnew))
1681 * Note that this doesn't return the actual pagesize, but
1682 * the allocation granularity. If future Windows specific git code
1683 * needs the real getpagesize function, we need to find another solution.
1685 int mingw_getpagesize(void)
1689 return si.dwAllocationGranularity;
1692 struct passwd *getpwuid(int uid)
1694 static char user_name[100];
1695 static struct passwd p;
1697 DWORD len = sizeof(user_name);
1698 if (!GetUserName(user_name, &len))
1700 p.pw_name = user_name;
1701 p.pw_gecos = "unknown";
1706 static HANDLE timer_event;
1707 static HANDLE timer_thread;
1708 static int timer_interval;
1709 static int one_shot;
1710 static sig_handler_t timer_fn = SIG_DFL, sigint_fn = SIG_DFL;
1712 /* The timer works like this:
1713 * The thread, ticktack(), is a trivial routine that most of the time
1714 * only waits to receive the signal to terminate. The main thread tells
1715 * the thread to terminate by setting the timer_event to the signalled
1717 * But ticktack() interrupts the wait state after the timer's interval
1718 * length to call the signal handler.
1721 static unsigned __stdcall ticktack(void *dummy)
1723 while (WaitForSingleObject(timer_event, timer_interval) == WAIT_TIMEOUT) {
1724 mingw_raise(SIGALRM);
1731 static int start_timer_thread(void)
1733 timer_event = CreateEvent(NULL, FALSE, FALSE, NULL);
1735 timer_thread = (HANDLE) _beginthreadex(NULL, 0, ticktack, NULL, 0, NULL);
1737 return errno = ENOMEM,
1738 error("cannot start timer thread");
1740 return errno = ENOMEM,
1741 error("cannot allocate resources for timer");
1745 static void stop_timer_thread(void)
1748 SetEvent(timer_event); /* tell thread to terminate */
1750 int rc = WaitForSingleObject(timer_thread, 1000);
1751 if (rc == WAIT_TIMEOUT)
1752 error("timer thread did not terminate timely");
1753 else if (rc != WAIT_OBJECT_0)
1754 error("waiting for timer thread failed: %lu",
1756 CloseHandle(timer_thread);
1759 CloseHandle(timer_event);
1761 timer_thread = NULL;
1764 static inline int is_timeval_eq(const struct timeval *i1, const struct timeval *i2)
1766 return i1->tv_sec == i2->tv_sec && i1->tv_usec == i2->tv_usec;
1769 int setitimer(int type, struct itimerval *in, struct itimerval *out)
1771 static const struct timeval zero;
1772 static int atexit_done;
1775 return errno = EINVAL,
1776 error("setitimer param 3 != NULL not implemented");
1777 if (!is_timeval_eq(&in->it_interval, &zero) &&
1778 !is_timeval_eq(&in->it_interval, &in->it_value))
1779 return errno = EINVAL,
1780 error("setitimer: it_interval must be zero or eq it_value");
1783 stop_timer_thread();
1785 if (is_timeval_eq(&in->it_value, &zero) &&
1786 is_timeval_eq(&in->it_interval, &zero))
1789 timer_interval = in->it_value.tv_sec * 1000 + in->it_value.tv_usec / 1000;
1790 one_shot = is_timeval_eq(&in->it_interval, &zero);
1792 atexit(stop_timer_thread);
1795 return start_timer_thread();
1798 int sigaction(int sig, struct sigaction *in, struct sigaction *out)
1801 return errno = EINVAL,
1802 error("sigaction only implemented for SIGALRM");
1804 return errno = EINVAL,
1805 error("sigaction: param 3 != NULL not implemented");
1807 timer_fn = in->sa_handler;
1812 sig_handler_t mingw_signal(int sig, sig_handler_t handler)
1824 sigint_fn = handler;
1828 return signal(sig, handler);
1835 int mingw_raise(int sig)
1839 if (timer_fn == SIG_DFL) {
1840 if (isatty(STDERR_FILENO))
1841 fputs("Alarm clock\n", stderr);
1842 exit(128 + SIGALRM);
1843 } else if (timer_fn != SIG_IGN)
1848 if (sigint_fn == SIG_DFL)
1850 else if (sigint_fn != SIG_IGN)
1860 static const char *make_backslash_path(const char *path)
1862 static char buf[PATH_MAX + 1];
1865 if (strlcpy(buf, path, PATH_MAX) >= PATH_MAX)
1866 die("Too long path: %.*s", 60, path);
1868 for (c = buf; *c; c++) {
1875 void mingw_open_html(const char *unixpath)
1877 const char *htmlpath = make_backslash_path(unixpath);
1878 typedef HINSTANCE (WINAPI *T)(HWND, const char *,
1879 const char *, const char *, const char *, INT);
1884 shell32 = LoadLibrary("shell32.dll");
1886 die("cannot load shell32.dll");
1887 ShellExecute = (T)GetProcAddress(shell32, "ShellExecuteA");
1889 die("cannot run browser");
1891 printf("Launching default browser to display HTML ...\n");
1892 r = HCAST(int, ShellExecute(NULL, "open", htmlpath,
1893 NULL, "\\", SW_SHOWNORMAL));
1894 FreeLibrary(shell32);
1895 /* see the MSDN documentation referring to the result codes here */
1897 die("failed to launch browser for %.*s", MAX_PATH, unixpath);
1901 int link(const char *oldpath, const char *newpath)
1903 typedef BOOL (WINAPI *T)(LPCWSTR, LPCWSTR, LPSECURITY_ATTRIBUTES);
1904 static T create_hard_link = NULL;
1905 wchar_t woldpath[MAX_PATH], wnewpath[MAX_PATH];
1906 if (xutftowcs_path(woldpath, oldpath) < 0 ||
1907 xutftowcs_path(wnewpath, newpath) < 0)
1910 if (!create_hard_link) {
1911 create_hard_link = (T) GetProcAddress(
1912 GetModuleHandle("kernel32.dll"), "CreateHardLinkW");
1913 if (!create_hard_link)
1914 create_hard_link = (T)-1;
1916 if (create_hard_link == (T)-1) {
1920 if (!create_hard_link(wnewpath, woldpath, NULL)) {
1921 errno = err_win_to_posix(GetLastError());
1927 pid_t waitpid(pid_t pid, int *status, int options)
1929 HANDLE h = OpenProcess(SYNCHRONIZE | PROCESS_QUERY_INFORMATION,
1936 if (pid > 0 && options & WNOHANG) {
1937 if (WAIT_OBJECT_0 != WaitForSingleObject(h, 0)) {
1941 options &= ~WNOHANG;
1945 struct pinfo_t **ppinfo;
1946 if (WaitForSingleObject(h, INFINITE) != WAIT_OBJECT_0) {
1952 GetExitCodeProcess(h, (LPDWORD)status);
1954 EnterCriticalSection(&pinfo_cs);
1958 struct pinfo_t *info = *ppinfo;
1959 if (info->pid == pid) {
1960 CloseHandle(info->proc);
1961 *ppinfo = info->next;
1965 ppinfo = &info->next;
1968 LeaveCriticalSection(&pinfo_cs);
1979 int mingw_skip_dos_drive_prefix(char **path)
1981 int ret = has_dos_drive_prefix(*path);
1986 int mingw_offset_1st_component(const char *path)
1988 char *pos = (char *)path;
1991 if (!skip_dos_drive_prefix(&pos) &&
1992 is_dir_sep(pos[0]) && is_dir_sep(pos[1])) {
1993 /* skip server name */
1994 pos = strpbrk(pos + 2, "\\/");
1996 return 0; /* Error: malformed unc path */
2000 } while (*pos && !is_dir_sep(*pos));
2003 return pos + is_dir_sep(*pos) - path;
2006 int xutftowcsn(wchar_t *wcs, const char *utfs, size_t wcslen, int utflen)
2008 int upos = 0, wpos = 0;
2009 const unsigned char *utf = (const unsigned char*) utfs;
2010 if (!utf || !wcs || wcslen < 1) {
2014 /* reserve space for \0 */
2019 while (upos < utflen) {
2020 int c = utf[upos++] & 0xff;
2021 if (utflen == INT_MAX && c == 0)
2024 if (wpos >= wcslen) {
2033 } else if (c >= 0xc2 && c < 0xe0 && upos < utflen &&
2034 (utf[upos] & 0xc0) == 0x80) {
2036 c = ((c & 0x1f) << 6);
2037 c |= (utf[upos++] & 0x3f);
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) {
2044 c = ((c & 0x0f) << 12);
2045 c |= ((utf[upos++] & 0x3f) << 6);
2046 c |= (utf[upos++] & 0x3f);
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);
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 */
2067 /* invalid utf-8 byte, non-printable unicode: convert to hex */
2068 static const char *hex = "0123456789abcdef";
2069 wcs[wpos++] = hex[c >> 4];
2071 wcs[wpos++] = hex[c & 0x0f];
2078 int xwcstoutf(char *utf, const wchar_t *wcs, size_t utflen)
2080 if (!wcs || !utf || utflen < 1) {
2084 utflen = WideCharToMultiByte(CP_UTF8, 0, wcs, -1, utf, utflen, NULL, NULL);
2091 static void setup_windows_environment()
2093 char *tmp = getenv("TMPDIR");
2095 /* on Windows it is TMP and TEMP */
2097 if (!(tmp = getenv("TMP")))
2098 tmp = getenv("TEMP");
2100 setenv("TMPDIR", tmp, 1);
2101 tmp = getenv("TMPDIR");
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).
2112 convert_slashes(tmp);
2115 /* simulate TERM to enable auto-color (see color.c) */
2116 if (!getenv("TERM"))
2117 setenv("TERM", "cygwin", 1);
2121 * Disable MSVCRT command line wildcard expansion (__getmainargs called from
2122 * mingw startup code, see init.c in mingw runtime).
2130 extern int __wgetmainargs(int *argc, wchar_t ***argv, wchar_t ***env, int glob,
2133 static NORETURN void die_startup()
2135 fputs("fatal: not enough memory for initialization", stderr);
2139 static void *malloc_startup(size_t size)
2141 void *result = malloc(size);
2147 static char *wcstoutfdup_startup(char *buffer, const wchar_t *wcs, size_t len)
2149 len = xwcstoutf(buffer, wcs, len) + 1;
2150 return memcpy(malloc_startup(len), buffer, len);
2153 void mingw_startup()
2155 int i, maxlen, argc;
2157 wchar_t **wenv, **wargv;
2160 /* get wide char arguments and environment */
2162 if (__wgetmainargs(&argc, &wargv, &wenv, _CRT_glob, &si) < 0)
2165 /* determine size of argv and environ conversion buffer */
2166 maxlen = wcslen(_wpgmptr);
2167 for (i = 1; i < argc; i++)
2168 maxlen = max(maxlen, wcslen(wargv[i]));
2169 for (i = 0; wenv[i]; i++)
2170 maxlen = max(maxlen, wcslen(wenv[i]));
2173 * nedmalloc can't free CRT memory, allocate resizable environment
2174 * list. Note that xmalloc / xmemdupz etc. call getenv, so we cannot
2175 * use it while initializing the environment itself.
2177 environ_size = i + 1;
2178 environ_alloc = alloc_nr(environ_size * sizeof(char*));
2179 environ = malloc_startup(environ_alloc);
2181 /* allocate buffer (wchar_t encodes to max 3 UTF-8 bytes) */
2182 maxlen = 3 * maxlen + 1;
2183 buffer = malloc_startup(maxlen);
2185 /* convert command line arguments and environment to UTF-8 */
2186 __argv[0] = wcstoutfdup_startup(buffer, _wpgmptr, maxlen);
2187 for (i = 1; i < argc; i++)
2188 __argv[i] = wcstoutfdup_startup(buffer, wargv[i], maxlen);
2189 for (i = 0; wenv[i]; i++)
2190 environ[i] = wcstoutfdup_startup(buffer, wenv[i], maxlen);
2194 /* sort environment for O(log n) getenv / putenv */
2195 qsort(environ, i, sizeof(char*), compareenv);
2197 /* fix Windows specific environment settings */
2198 setup_windows_environment();
2200 /* initialize critical section for waitpid pinfo_t list */
2201 InitializeCriticalSection(&pinfo_cs);
2203 /* set up default file mode and file modes for stdin/out/err */
2205 _setmode(_fileno(stdin), _O_BINARY);
2206 _setmode(_fileno(stdout), _O_BINARY);
2207 _setmode(_fileno(stderr), _O_BINARY);
2209 /* initialize Unicode console */
2213 int uname(struct utsname *buf)
2215 unsigned v = (unsigned)GetVersion();
2216 memset(buf, 0, sizeof(*buf));
2217 xsnprintf(buf->sysname, sizeof(buf->sysname), "Windows");
2218 xsnprintf(buf->release, sizeof(buf->release),
2219 "%u.%u", v & 0xff, (v >> 8) & 0xff);
2220 /* assuming NT variants only.. */
2221 xsnprintf(buf->version, sizeof(buf->version),
2222 "%u", (v >> 16) & 0x7fff);