1 #include "../git-compat-util.h"
6 #include "../run-command.h"
8 static const int delay[] = { 0, 1, 10, 20, 40 };
10 int err_win_to_posix(DWORD winerr)
14 case ERROR_ACCESS_DENIED: error = EACCES; break;
15 case ERROR_ACCOUNT_DISABLED: error = EACCES; break;
16 case ERROR_ACCOUNT_RESTRICTION: error = EACCES; break;
17 case ERROR_ALREADY_ASSIGNED: error = EBUSY; break;
18 case ERROR_ALREADY_EXISTS: error = EEXIST; break;
19 case ERROR_ARITHMETIC_OVERFLOW: error = ERANGE; break;
20 case ERROR_BAD_COMMAND: error = EIO; break;
21 case ERROR_BAD_DEVICE: error = ENODEV; break;
22 case ERROR_BAD_DRIVER_LEVEL: error = ENXIO; break;
23 case ERROR_BAD_EXE_FORMAT: error = ENOEXEC; break;
24 case ERROR_BAD_FORMAT: error = ENOEXEC; break;
25 case ERROR_BAD_LENGTH: error = EINVAL; break;
26 case ERROR_BAD_PATHNAME: error = ENOENT; break;
27 case ERROR_BAD_PIPE: error = EPIPE; break;
28 case ERROR_BAD_UNIT: error = ENODEV; break;
29 case ERROR_BAD_USERNAME: error = EINVAL; break;
30 case ERROR_BROKEN_PIPE: error = EPIPE; break;
31 case ERROR_BUFFER_OVERFLOW: error = ENAMETOOLONG; break;
32 case ERROR_BUSY: error = EBUSY; break;
33 case ERROR_BUSY_DRIVE: error = EBUSY; break;
34 case ERROR_CALL_NOT_IMPLEMENTED: error = ENOSYS; break;
35 case ERROR_CANNOT_MAKE: error = EACCES; break;
36 case ERROR_CANTOPEN: error = EIO; break;
37 case ERROR_CANTREAD: error = EIO; break;
38 case ERROR_CANTWRITE: error = EIO; break;
39 case ERROR_CRC: error = EIO; break;
40 case ERROR_CURRENT_DIRECTORY: error = EACCES; break;
41 case ERROR_DEVICE_IN_USE: error = EBUSY; break;
42 case ERROR_DEV_NOT_EXIST: error = ENODEV; break;
43 case ERROR_DIRECTORY: error = EINVAL; break;
44 case ERROR_DIR_NOT_EMPTY: error = ENOTEMPTY; break;
45 case ERROR_DISK_CHANGE: error = EIO; break;
46 case ERROR_DISK_FULL: error = ENOSPC; break;
47 case ERROR_DRIVE_LOCKED: error = EBUSY; break;
48 case ERROR_ENVVAR_NOT_FOUND: error = EINVAL; break;
49 case ERROR_EXE_MARKED_INVALID: error = ENOEXEC; break;
50 case ERROR_FILENAME_EXCED_RANGE: error = ENAMETOOLONG; break;
51 case ERROR_FILE_EXISTS: error = EEXIST; break;
52 case ERROR_FILE_INVALID: error = ENODEV; break;
53 case ERROR_FILE_NOT_FOUND: error = ENOENT; break;
54 case ERROR_GEN_FAILURE: error = EIO; break;
55 case ERROR_HANDLE_DISK_FULL: error = ENOSPC; break;
56 case ERROR_INSUFFICIENT_BUFFER: error = ENOMEM; break;
57 case ERROR_INVALID_ACCESS: error = EACCES; break;
58 case ERROR_INVALID_ADDRESS: error = EFAULT; break;
59 case ERROR_INVALID_BLOCK: error = EFAULT; break;
60 case ERROR_INVALID_DATA: error = EINVAL; break;
61 case ERROR_INVALID_DRIVE: error = ENODEV; break;
62 case ERROR_INVALID_EXE_SIGNATURE: error = ENOEXEC; break;
63 case ERROR_INVALID_FLAGS: error = EINVAL; break;
64 case ERROR_INVALID_FUNCTION: error = ENOSYS; break;
65 case ERROR_INVALID_HANDLE: error = EBADF; break;
66 case ERROR_INVALID_LOGON_HOURS: error = EACCES; break;
67 case ERROR_INVALID_NAME: error = EINVAL; break;
68 case ERROR_INVALID_OWNER: error = EINVAL; break;
69 case ERROR_INVALID_PARAMETER: error = EINVAL; break;
70 case ERROR_INVALID_PASSWORD: error = EPERM; break;
71 case ERROR_INVALID_PRIMARY_GROUP: error = EINVAL; break;
72 case ERROR_INVALID_SIGNAL_NUMBER: error = EINVAL; break;
73 case ERROR_INVALID_TARGET_HANDLE: error = EIO; break;
74 case ERROR_INVALID_WORKSTATION: error = EACCES; break;
75 case ERROR_IO_DEVICE: error = EIO; break;
76 case ERROR_IO_INCOMPLETE: error = EINTR; break;
77 case ERROR_LOCKED: error = EBUSY; break;
78 case ERROR_LOCK_VIOLATION: error = EACCES; break;
79 case ERROR_LOGON_FAILURE: error = EACCES; break;
80 case ERROR_MAPPED_ALIGNMENT: error = EINVAL; break;
81 case ERROR_META_EXPANSION_TOO_LONG: error = E2BIG; break;
82 case ERROR_MORE_DATA: error = EPIPE; break;
83 case ERROR_NEGATIVE_SEEK: error = ESPIPE; break;
84 case ERROR_NOACCESS: error = EFAULT; break;
85 case ERROR_NONE_MAPPED: error = EINVAL; break;
86 case ERROR_NOT_ENOUGH_MEMORY: error = ENOMEM; break;
87 case ERROR_NOT_READY: error = EAGAIN; break;
88 case ERROR_NOT_SAME_DEVICE: error = EXDEV; break;
89 case ERROR_NO_DATA: error = EPIPE; break;
90 case ERROR_NO_MORE_SEARCH_HANDLES: error = EIO; break;
91 case ERROR_NO_PROC_SLOTS: error = EAGAIN; break;
92 case ERROR_NO_SUCH_PRIVILEGE: error = EACCES; break;
93 case ERROR_OPEN_FAILED: error = EIO; break;
94 case ERROR_OPEN_FILES: error = EBUSY; break;
95 case ERROR_OPERATION_ABORTED: error = EINTR; break;
96 case ERROR_OUTOFMEMORY: error = ENOMEM; break;
97 case ERROR_PASSWORD_EXPIRED: error = EACCES; break;
98 case ERROR_PATH_BUSY: error = EBUSY; break;
99 case ERROR_PATH_NOT_FOUND: error = ENOENT; break;
100 case ERROR_PIPE_BUSY: error = EBUSY; break;
101 case ERROR_PIPE_CONNECTED: error = EPIPE; break;
102 case ERROR_PIPE_LISTENING: error = EPIPE; break;
103 case ERROR_PIPE_NOT_CONNECTED: error = EPIPE; break;
104 case ERROR_PRIVILEGE_NOT_HELD: error = EACCES; break;
105 case ERROR_READ_FAULT: error = EIO; break;
106 case ERROR_SEEK: error = EIO; break;
107 case ERROR_SEEK_ON_DEVICE: error = ESPIPE; break;
108 case ERROR_SHARING_BUFFER_EXCEEDED: error = ENFILE; break;
109 case ERROR_SHARING_VIOLATION: error = EACCES; break;
110 case ERROR_STACK_OVERFLOW: error = ENOMEM; break;
111 case ERROR_SWAPERROR: error = ENOENT; break;
112 case ERROR_TOO_MANY_MODULES: error = EMFILE; break;
113 case ERROR_TOO_MANY_OPEN_FILES: error = EMFILE; break;
114 case ERROR_UNRECOGNIZED_MEDIA: error = ENXIO; break;
115 case ERROR_UNRECOGNIZED_VOLUME: error = ENODEV; break;
116 case ERROR_WAIT_NO_CHILDREN: error = ECHILD; break;
117 case ERROR_WRITE_FAULT: error = EIO; break;
118 case ERROR_WRITE_PROTECT: error = EROFS; break;
123 static inline int is_file_in_use_error(DWORD errcode)
126 case ERROR_SHARING_VIOLATION:
127 case ERROR_ACCESS_DENIED:
134 static int read_yes_no_answer(void)
138 if (fgets(answer, sizeof(answer), stdin)) {
139 size_t answer_len = strlen(answer);
140 int got_full_line = 0, c;
142 /* remove the newline */
143 if (answer_len >= 2 && answer[answer_len-2] == '\r') {
144 answer[answer_len-2] = '\0';
146 } else if (answer_len >= 1 && answer[answer_len-1] == '\n') {
147 answer[answer_len-1] = '\0';
150 /* flush the buffer in case we did not get the full line */
152 while ((c = getchar()) != EOF && c != '\n')
155 /* we could not read, return the
156 * default answer which is no */
159 if (tolower(answer[0]) == 'y' && !answer[1])
161 if (!strncasecmp(answer, "yes", sizeof(answer)))
163 if (tolower(answer[0]) == 'n' && !answer[1])
165 if (!strncasecmp(answer, "no", sizeof(answer)))
168 /* did not find an answer we understand */
172 static int ask_yes_no_if_possible(const char *format, ...)
175 const char *retry_hook[] = { NULL, NULL, NULL };
178 va_start(args, format);
179 vsnprintf(question, sizeof(question), format, args);
182 if ((retry_hook[0] = mingw_getenv("GIT_ASK_YESNO"))) {
183 retry_hook[1] = question;
184 return !run_command_v_opt(retry_hook, 0);
187 if (!isatty(_fileno(stdin)) || !isatty(_fileno(stderr)))
192 fprintf(stderr, "%s (y/n) ", question);
194 if ((answer = read_yes_no_answer()) >= 0)
197 fprintf(stderr, "Sorry, I did not understand your answer. "
198 "Please type 'y' or 'n'\n");
202 int mingw_unlink(const char *pathname)
205 wchar_t wpathname[MAX_PATH];
206 if (xutftowcs_path(wpathname, pathname) < 0)
209 /* read-only files cannot be removed */
210 _wchmod(wpathname, 0666);
211 while ((ret = _wunlink(wpathname)) == -1 && tries < ARRAY_SIZE(delay)) {
212 if (!is_file_in_use_error(GetLastError()))
215 * We assume that some other process had the source or
216 * destination file open at the wrong moment and retry.
217 * In order to give the other process a higher chance to
218 * complete its operation, we give up our time slice now.
219 * If we have to retry again, we do sleep a bit.
224 while (ret == -1 && is_file_in_use_error(GetLastError()) &&
225 ask_yes_no_if_possible("Unlink of file '%s' failed. "
226 "Should I try again?", pathname))
227 ret = _wunlink(wpathname);
231 static int is_dir_empty(const wchar_t *wpath)
233 WIN32_FIND_DATAW findbuf;
235 wchar_t wbuf[MAX_PATH + 2];
237 wcscat(wbuf, L"\\*");
238 handle = FindFirstFileW(wbuf, &findbuf);
239 if (handle == INVALID_HANDLE_VALUE)
240 return GetLastError() == ERROR_NO_MORE_FILES;
242 while (!wcscmp(findbuf.cFileName, L".") ||
243 !wcscmp(findbuf.cFileName, L".."))
244 if (!FindNextFileW(handle, &findbuf)) {
245 DWORD err = GetLastError();
247 return err == ERROR_NO_MORE_FILES;
253 int mingw_rmdir(const char *pathname)
256 wchar_t wpathname[MAX_PATH];
257 if (xutftowcs_path(wpathname, pathname) < 0)
260 while ((ret = _wrmdir(wpathname)) == -1 && tries < ARRAY_SIZE(delay)) {
261 if (!is_file_in_use_error(GetLastError()))
262 errno = err_win_to_posix(GetLastError());
265 if (!is_dir_empty(wpathname)) {
270 * We assume that some other process had the source or
271 * destination file open at the wrong moment and retry.
272 * In order to give the other process a higher chance to
273 * complete its operation, we give up our time slice now.
274 * If we have to retry again, we do sleep a bit.
279 while (ret == -1 && errno == EACCES && is_file_in_use_error(GetLastError()) &&
280 ask_yes_no_if_possible("Deletion of directory '%s' failed. "
281 "Should I try again?", pathname))
282 ret = _wrmdir(wpathname);
286 int mingw_mkdir(const char *path, int mode)
289 wchar_t wpath[MAX_PATH];
290 if (xutftowcs_path(wpath, path) < 0)
292 ret = _wmkdir(wpath);
296 int mingw_open (const char *filename, int oflags, ...)
301 wchar_t wfilename[MAX_PATH];
303 va_start(args, oflags);
304 mode = va_arg(args, int);
307 if (filename && !strcmp(filename, "/dev/null"))
310 if (xutftowcs_path(wfilename, filename) < 0)
312 fd = _wopen(wfilename, oflags, mode);
314 if (fd < 0 && (oflags & O_CREAT) && errno == EACCES) {
315 DWORD attrs = GetFileAttributesW(wfilename);
316 if (attrs != INVALID_FILE_ATTRIBUTES && (attrs & FILE_ATTRIBUTE_DIRECTORY))
322 static BOOL WINAPI ctrl_ignore(DWORD type)
328 int mingw_fgetc(FILE *stream)
331 if (!isatty(_fileno(stream)))
332 return fgetc(stream);
334 SetConsoleCtrlHandler(ctrl_ignore, TRUE);
337 if (ch != EOF || GetLastError() != ERROR_OPERATION_ABORTED)
340 /* Ctrl+C was pressed, simulate SIGINT and retry */
343 SetConsoleCtrlHandler(ctrl_ignore, FALSE);
348 FILE *mingw_fopen (const char *filename, const char *otype)
351 wchar_t wfilename[MAX_PATH], wotype[4];
352 if (filename && !strcmp(filename, "/dev/null"))
354 if (xutftowcs_path(wfilename, filename) < 0 ||
355 xutftowcs(wotype, otype, ARRAY_SIZE(wotype)) < 0)
357 file = _wfopen(wfilename, wotype);
361 FILE *mingw_freopen (const char *filename, const char *otype, FILE *stream)
364 wchar_t wfilename[MAX_PATH], wotype[4];
365 if (filename && !strcmp(filename, "/dev/null"))
367 if (xutftowcs_path(wfilename, filename) < 0 ||
368 xutftowcs(wotype, otype, ARRAY_SIZE(wotype)) < 0)
370 file = _wfreopen(wfilename, wotype, stream);
375 int mingw_fflush(FILE *stream)
377 int ret = fflush(stream);
380 * write() is used behind the scenes of stdio output functions.
381 * Since git code does not check for errors after each stdio write
382 * operation, it can happen that write() is called by a later
383 * stdio function even if an earlier write() call failed. In the
384 * case of a pipe whose readable end was closed, only the first
385 * call to write() reports EPIPE on Windows. Subsequent write()
386 * calls report EINVAL. It is impossible to notice whether this
387 * fflush invocation triggered such a case, therefore, we have to
388 * catch all EINVAL errors whole-sale.
390 if (ret && errno == EINVAL)
396 int mingw_access(const char *filename, int mode)
398 wchar_t wfilename[MAX_PATH];
399 if (xutftowcs_path(wfilename, filename) < 0)
401 /* X_OK is not supported by the MSVCRT version */
402 return _waccess(wfilename, mode & ~X_OK);
405 int mingw_chdir(const char *dirname)
407 wchar_t wdirname[MAX_PATH];
408 if (xutftowcs_path(wdirname, dirname) < 0)
410 return _wchdir(wdirname);
413 int mingw_chmod(const char *filename, int mode)
415 wchar_t wfilename[MAX_PATH];
416 if (xutftowcs_path(wfilename, filename) < 0)
418 return _wchmod(wfilename, mode);
422 * The unit of FILETIME is 100-nanoseconds since January 1, 1601, UTC.
423 * Returns the 100-nanoseconds ("hekto nanoseconds") since the epoch.
425 static inline long long filetime_to_hnsec(const FILETIME *ft)
427 long long winTime = ((long long)ft->dwHighDateTime << 32) + ft->dwLowDateTime;
428 /* Windows to Unix Epoch conversion */
429 return winTime - 116444736000000000LL;
432 static inline time_t filetime_to_time_t(const FILETIME *ft)
434 return (time_t)(filetime_to_hnsec(ft) / 10000000);
437 /* We keep the do_lstat code in a separate function to avoid recursion.
438 * When a path ends with a slash, the stat will fail with ENOENT. In
439 * this case, we strip the trailing slashes and stat again.
441 * If follow is true then act like stat() and report on the link
442 * target. Otherwise report on the link itself.
444 static int do_lstat(int follow, const char *file_name, struct stat *buf)
446 WIN32_FILE_ATTRIBUTE_DATA fdata;
447 wchar_t wfilename[MAX_PATH];
448 if (xutftowcs_path(wfilename, file_name) < 0)
451 if (GetFileAttributesExW(wfilename, GetFileExInfoStandard, &fdata)) {
456 buf->st_mode = file_attr_to_st_mode(fdata.dwFileAttributes);
457 buf->st_size = fdata.nFileSizeLow |
458 (((off_t)fdata.nFileSizeHigh)<<32);
459 buf->st_dev = buf->st_rdev = 0; /* not used by Git */
460 buf->st_atime = filetime_to_time_t(&(fdata.ftLastAccessTime));
461 buf->st_mtime = filetime_to_time_t(&(fdata.ftLastWriteTime));
462 buf->st_ctime = filetime_to_time_t(&(fdata.ftCreationTime));
463 if (fdata.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) {
464 WIN32_FIND_DATAW findbuf;
465 HANDLE handle = FindFirstFileW(wfilename, &findbuf);
466 if (handle != INVALID_HANDLE_VALUE) {
467 if ((findbuf.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) &&
468 (findbuf.dwReserved0 == IO_REPARSE_TAG_SYMLINK)) {
470 char buffer[MAXIMUM_REPARSE_DATA_BUFFER_SIZE];
471 buf->st_size = readlink(file_name, buffer, MAXIMUM_REPARSE_DATA_BUFFER_SIZE);
473 buf->st_mode = S_IFLNK;
475 buf->st_mode |= S_IREAD;
476 if (!(findbuf.dwFileAttributes & FILE_ATTRIBUTE_READONLY))
477 buf->st_mode |= S_IWRITE;
484 switch (GetLastError()) {
485 case ERROR_ACCESS_DENIED:
486 case ERROR_SHARING_VIOLATION:
487 case ERROR_LOCK_VIOLATION:
488 case ERROR_SHARING_BUFFER_EXCEEDED:
491 case ERROR_BUFFER_OVERFLOW:
492 errno = ENAMETOOLONG;
494 case ERROR_NOT_ENOUGH_MEMORY:
504 /* We provide our own lstat/fstat functions, since the provided
505 * lstat/fstat functions are so slow. These stat functions are
506 * tailored for Git's usage (read: fast), and are not meant to be
507 * complete. Note that Git stat()s are redirected to mingw_lstat()
508 * too, since Windows doesn't really handle symlinks that well.
510 static int do_stat_internal(int follow, const char *file_name, struct stat *buf)
513 char alt_name[PATH_MAX];
515 if (!do_lstat(follow, file_name, buf))
518 /* if file_name ended in a '/', Windows returned ENOENT;
519 * try again without trailing slashes
524 namelen = strlen(file_name);
525 if (namelen && file_name[namelen-1] != '/')
527 while (namelen && file_name[namelen-1] == '/')
529 if (!namelen || namelen >= PATH_MAX)
532 memcpy(alt_name, file_name, namelen);
533 alt_name[namelen] = 0;
534 return do_lstat(follow, alt_name, buf);
537 int mingw_lstat(const char *file_name, struct stat *buf)
539 return do_stat_internal(0, file_name, buf);
541 int mingw_stat(const char *file_name, struct stat *buf)
543 return do_stat_internal(1, file_name, buf);
546 int mingw_fstat(int fd, struct stat *buf)
548 HANDLE fh = (HANDLE)_get_osfhandle(fd);
549 BY_HANDLE_FILE_INFORMATION fdata;
551 if (fh == INVALID_HANDLE_VALUE) {
555 /* direct non-file handles to MS's fstat() */
556 if (GetFileType(fh) != FILE_TYPE_DISK)
557 return _fstati64(fd, buf);
559 if (GetFileInformationByHandle(fh, &fdata)) {
564 buf->st_mode = file_attr_to_st_mode(fdata.dwFileAttributes);
565 buf->st_size = fdata.nFileSizeLow |
566 (((off_t)fdata.nFileSizeHigh)<<32);
567 buf->st_dev = buf->st_rdev = 0; /* not used by Git */
568 buf->st_atime = filetime_to_time_t(&(fdata.ftLastAccessTime));
569 buf->st_mtime = filetime_to_time_t(&(fdata.ftLastWriteTime));
570 buf->st_ctime = filetime_to_time_t(&(fdata.ftCreationTime));
577 static inline void time_t_to_filetime(time_t t, FILETIME *ft)
579 long long winTime = t * 10000000LL + 116444736000000000LL;
580 ft->dwLowDateTime = winTime;
581 ft->dwHighDateTime = winTime >> 32;
584 int mingw_utime (const char *file_name, const struct utimbuf *times)
589 wchar_t wfilename[MAX_PATH];
590 if (xutftowcs_path(wfilename, file_name) < 0)
593 /* must have write permission */
594 attrs = GetFileAttributesW(wfilename);
595 if (attrs != INVALID_FILE_ATTRIBUTES &&
596 (attrs & FILE_ATTRIBUTE_READONLY)) {
597 /* ignore errors here; open() will report them */
598 SetFileAttributesW(wfilename, attrs & ~FILE_ATTRIBUTE_READONLY);
601 if ((fh = _wopen(wfilename, O_RDWR | O_BINARY)) < 0) {
607 time_t_to_filetime(times->modtime, &mft);
608 time_t_to_filetime(times->actime, &aft);
610 GetSystemTimeAsFileTime(&mft);
613 if (!SetFileTime((HANDLE)_get_osfhandle(fh), NULL, &aft, &mft)) {
621 if (attrs != INVALID_FILE_ATTRIBUTES &&
622 (attrs & FILE_ATTRIBUTE_READONLY)) {
623 /* ignore errors again */
624 SetFileAttributesW(wfilename, attrs);
629 unsigned int sleep (unsigned int seconds)
635 char *mingw_mktemp(char *template)
637 wchar_t wtemplate[MAX_PATH];
638 if (xutftowcs_path(wtemplate, template) < 0)
640 if (!_wmktemp(wtemplate))
642 if (xwcstoutf(template, wtemplate, strlen(template) + 1) < 0)
647 int mkstemp(char *template)
649 char *filename = mktemp(template);
650 if (filename == NULL)
652 return open(filename, O_RDWR | O_CREAT, 0600);
655 int gettimeofday(struct timeval *tv, void *tz)
660 GetSystemTimeAsFileTime(&ft);
661 hnsec = filetime_to_hnsec(&ft);
662 tv->tv_sec = hnsec / 10000000;
663 tv->tv_usec = (hnsec % 10000000) / 10;
667 int pipe(int filedes[2])
671 /* this creates non-inheritable handles */
672 if (!CreatePipe(&h[0], &h[1], NULL, 8192)) {
673 errno = err_win_to_posix(GetLastError());
676 filedes[0] = _open_osfhandle((int)h[0], O_NOINHERIT);
677 if (filedes[0] < 0) {
682 filedes[1] = _open_osfhandle((int)h[1], O_NOINHERIT);
683 if (filedes[0] < 0) {
691 struct tm *gmtime_r(const time_t *timep, struct tm *result)
693 /* gmtime() in MSVCRT.DLL is thread-safe, but not reentrant */
694 memcpy(result, gmtime(timep), sizeof(struct tm));
698 struct tm *localtime_r(const time_t *timep, struct tm *result)
700 /* localtime() in MSVCRT.DLL is thread-safe, but not reentrant */
701 memcpy(result, localtime(timep), sizeof(struct tm));
705 char *mingw_getcwd(char *pointer, int len)
708 wchar_t wpointer[MAX_PATH];
709 if (!_wgetcwd(wpointer, ARRAY_SIZE(wpointer)))
711 if (xwcstoutf(pointer, wpointer, len) < 0)
713 for (i = 0; pointer[i]; i++)
714 if (pointer[i] == '\\')
720 * See http://msdn2.microsoft.com/en-us/library/17w5ykft(vs.71).aspx
721 * (Parsing C++ Command-Line Arguments)
723 static const char *quote_arg(const char *arg)
725 /* count chars to quote */
727 int force_quotes = 0;
730 if (!*p) force_quotes = 1;
732 if (isspace(*p) || *p == '*' || *p == '?' || *p == '{' || *p == '\'')
736 else if (*p == '\\') {
750 if (!force_quotes && n == 0)
753 /* insert \ where necessary */
754 d = q = xmalloc(len+n+3);
759 else if (*arg == '\\') {
761 while (*arg == '\\') {
778 static const char *parse_interpreter(const char *cmd)
780 static char buf[100];
784 /* don't even try a .exe */
786 if (n >= 4 && !strcasecmp(cmd+n-4, ".exe"))
789 fd = open(cmd, O_RDONLY);
792 n = read(fd, buf, sizeof(buf)-1);
794 if (n < 4) /* at least '#!/x' and not error */
797 if (buf[0] != '#' || buf[1] != '!')
800 p = buf + strcspn(buf, "\r\n");
805 if (!(p = strrchr(buf+2, '/')) && !(p = strrchr(buf+2, '\\')))
808 if ((opt = strchr(p+1, ' ')))
814 * Splits the PATH into parts.
816 static char **get_path_split(void)
818 char *p, **path, *envpath = mingw_getenv("PATH");
821 if (!envpath || !*envpath)
824 envpath = xstrdup(envpath);
830 if (*dir) { /* not earlier, catches series of ; */
837 path = xmalloc((n+1)*sizeof(char *));
842 path[i++] = xstrdup(p);
852 static void free_path_split(char **path)
865 * exe_only means that we only want to detect .exe files, but not scripts
866 * (which do not have an extension)
868 static char *lookup_prog(const char *dir, const char *cmd, int isexe, int exe_only)
871 snprintf(path, sizeof(path), "%s/%s.exe", dir, cmd);
873 if (!isexe && access(path, F_OK) == 0)
874 return xstrdup(path);
875 path[strlen(path)-4] = '\0';
876 if ((!exe_only || isexe) && access(path, F_OK) == 0)
877 if (!(GetFileAttributes(path) & FILE_ATTRIBUTE_DIRECTORY))
878 return xstrdup(path);
883 * Determines the absolute path of cmd using the split path in path.
884 * If cmd contains a slash or backslash, no lookup is performed.
886 static char *path_lookup(const char *cmd, char **path, int exe_only)
889 int len = strlen(cmd);
890 int isexe = len >= 4 && !strcasecmp(cmd+len-4, ".exe");
892 if (strchr(cmd, '/') || strchr(cmd, '\\'))
895 while (!prog && *path)
896 prog = lookup_prog(*path++, cmd, isexe, exe_only);
901 static int env_compare(const void *a, const void *b)
905 return strcasecmp(*ea, *eb);
909 struct pinfo_t *next;
913 static struct pinfo_t *pinfo = NULL;
914 CRITICAL_SECTION pinfo_cs;
916 static pid_t mingw_spawnve_fd(const char *cmd, const char **argv, char **env,
918 int prepend_cmd, int fhin, int fhout, int fherr)
921 PROCESS_INFORMATION pi;
922 struct strbuf envblk, args;
923 wchar_t wcmd[MAX_PATH], wdir[MAX_PATH], *wargs;
927 /* Determine whether or not we are associated to a console */
928 HANDLE cons = CreateFile("CONOUT$", GENERIC_WRITE,
929 FILE_SHARE_WRITE, NULL, OPEN_EXISTING,
930 FILE_ATTRIBUTE_NORMAL, NULL);
931 if (cons == INVALID_HANDLE_VALUE) {
932 /* There is no console associated with this process.
933 * Since the child is a console process, Windows
934 * would normally create a console window. But
935 * since we'll be redirecting std streams, we do
936 * not need the console.
937 * It is necessary to use DETACHED_PROCESS
938 * instead of CREATE_NO_WINDOW to make ssh
939 * recognize that it has no console.
941 flags = DETACHED_PROCESS;
943 /* There is already a console. If we specified
944 * DETACHED_PROCESS here, too, Windows would
945 * disassociate the child from the console.
946 * The same is true for CREATE_NO_WINDOW.
952 memset(&si, 0, sizeof(si));
954 si.dwFlags = STARTF_USESTDHANDLES;
955 si.hStdInput = winansi_get_osfhandle(fhin);
956 si.hStdOutput = winansi_get_osfhandle(fhout);
957 si.hStdError = winansi_get_osfhandle(fherr);
959 if (xutftowcs_path(wcmd, cmd) < 0)
961 if (dir && xutftowcs_path(wdir, dir) < 0)
964 /* concatenate argv, quoting args as we go */
965 strbuf_init(&args, 0);
967 char *quoted = (char *)quote_arg(cmd);
968 strbuf_addstr(&args, quoted);
972 for (; *argv; argv++) {
973 char *quoted = (char *)quote_arg(*argv);
975 strbuf_addch(&args, ' ');
976 strbuf_addstr(&args, quoted);
981 wargs = xmalloc((2 * args.len + 1) * sizeof(wchar_t));
982 xutftowcs(wargs, args.buf, 2 * args.len + 1);
983 strbuf_release(&args);
987 char **e, **sorted_env;
989 for (e = env; *e; e++)
992 /* environment must be sorted */
993 sorted_env = xmalloc(sizeof(*sorted_env) * (count + 1));
994 memcpy(sorted_env, env, sizeof(*sorted_env) * (count + 1));
995 qsort(sorted_env, count, sizeof(*sorted_env), env_compare);
997 strbuf_init(&envblk, 0);
998 for (e = sorted_env; *e; e++) {
999 strbuf_addstr(&envblk, *e);
1000 strbuf_addch(&envblk, '\0');
1005 memset(&pi, 0, sizeof(pi));
1006 ret = CreateProcessW(wcmd, wargs, NULL, NULL, TRUE, flags,
1007 env ? envblk.buf : NULL, dir ? wdir : NULL, &si, &pi);
1010 strbuf_release(&envblk);
1017 CloseHandle(pi.hThread);
1020 * The process ID is the human-readable identifier of the process
1021 * that we want to present in log and error messages. The handle
1022 * is not useful for this purpose. But we cannot close it, either,
1023 * because it is not possible to turn a process ID into a process
1024 * handle after the process terminated.
1025 * Keep the handle in a list for waitpid.
1027 EnterCriticalSection(&pinfo_cs);
1029 struct pinfo_t *info = xmalloc(sizeof(struct pinfo_t));
1030 info->pid = pi.dwProcessId;
1031 info->proc = pi.hProcess;
1035 LeaveCriticalSection(&pinfo_cs);
1037 return (pid_t)pi.dwProcessId;
1040 static pid_t mingw_spawnv(const char *cmd, const char **argv, int prepend_cmd)
1042 return mingw_spawnve_fd(cmd, argv, environ, NULL, prepend_cmd, 0, 1, 2);
1045 pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **env,
1047 int fhin, int fhout, int fherr)
1050 char **path = get_path_split();
1051 char *prog = path_lookup(cmd, path, 0);
1058 const char *interpr = parse_interpreter(prog);
1061 const char *argv0 = argv[0];
1062 char *iprog = path_lookup(interpr, path, 1);
1069 pid = mingw_spawnve_fd(iprog, argv, env, dir, 1,
1070 fhin, fhout, fherr);
1076 pid = mingw_spawnve_fd(prog, argv, env, dir, 0,
1077 fhin, fhout, fherr);
1080 free_path_split(path);
1084 static int try_shell_exec(const char *cmd, char *const *argv)
1086 const char *interpr = parse_interpreter(cmd);
1093 path = get_path_split();
1094 prog = path_lookup(interpr, path, 1);
1098 while (argv[argc]) argc++;
1099 argv2 = xmalloc(sizeof(*argv) * (argc+1));
1100 argv2[0] = (char *)cmd; /* full path to the script file */
1101 memcpy(&argv2[1], &argv[1], sizeof(*argv) * argc);
1102 pid = mingw_spawnv(prog, argv2, 1);
1105 if (waitpid(pid, &status, 0) < 0)
1109 pid = 1; /* indicate that we tried but failed */
1113 free_path_split(path);
1117 int mingw_execv(const char *cmd, char *const *argv)
1119 /* check if git_command is a shell script */
1120 if (!try_shell_exec(cmd, argv)) {
1123 pid = mingw_spawnv(cmd, (const char **)argv, 0);
1126 if (waitpid(pid, &status, 0) < 0)
1133 int mingw_execvp(const char *cmd, char *const *argv)
1135 char **path = get_path_split();
1136 char *prog = path_lookup(cmd, path, 0);
1139 mingw_execv(prog, argv);
1144 free_path_split(path);
1148 int mingw_kill(pid_t pid, int sig)
1150 if (pid > 0 && sig == SIGTERM) {
1151 HANDLE h = OpenProcess(PROCESS_TERMINATE, FALSE, pid);
1153 if (TerminateProcess(h, -1)) {
1158 errno = err_win_to_posix(GetLastError());
1161 } else if (pid > 0 && sig == 0) {
1162 HANDLE h = OpenProcess(PROCESS_QUERY_INFORMATION, FALSE, pid);
1173 static char **copy_environ(void)
1179 env = xmalloc((i+1)*sizeof(*env));
1180 for (i = 0; environ[i]; i++)
1181 env[i] = xstrdup(environ[i]);
1186 void free_environ(char **env)
1189 for (i = 0; env[i]; i++)
1194 static int lookup_env(char **env, const char *name, size_t nmln)
1198 for (i = 0; env[i]; i++) {
1199 if (0 == strncmp(env[i], name, nmln)
1200 && '=' == env[i][nmln])
1208 * If name contains '=', then sets the variable, otherwise it unsets it
1210 static char **env_setenv(char **env, const char *name)
1212 char *eq = strchrnul(name, '=');
1213 int i = lookup_env(env, name, eq-name);
1217 for (i = 0; env[i]; i++)
1219 env = xrealloc(env, (i+2)*sizeof(*env));
1220 env[i] = xstrdup(name);
1227 env[i] = xstrdup(name);
1236 * Copies global environ and adjusts variables as specified by vars.
1238 char **make_augmented_environ(const char *const *vars)
1240 char **env = copy_environ();
1243 env = env_setenv(env, *vars++);
1250 * The system's getenv looks up the name in a case-insensitive manner.
1251 * This version tries a case-sensitive lookup and falls back to
1252 * case-insensitive if nothing was found. This is necessary because,
1253 * as a prominent example, CMD sets 'Path', but not 'PATH'.
1254 * Warning: not thread-safe.
1256 static char *getenv_cs(const char *name)
1258 size_t len = strlen(name);
1259 int i = lookup_env(environ, name, len);
1261 return environ[i] + len + 1; /* skip past name and '=' */
1262 return getenv(name);
1265 char *mingw_getenv(const char *name)
1267 char *result = getenv_cs(name);
1268 if (!result && !strcmp(name, "TMPDIR")) {
1269 /* on Windows it is TMP and TEMP */
1270 result = getenv_cs("TMP");
1272 result = getenv_cs("TEMP");
1278 * Note, this isn't a complete replacement for getaddrinfo. It assumes
1279 * that service contains a numerical port, or that it is null. It
1280 * does a simple search using gethostbyname, and returns one IPv4 host
1283 static int WSAAPI getaddrinfo_stub(const char *node, const char *service,
1284 const struct addrinfo *hints,
1285 struct addrinfo **res)
1287 struct hostent *h = NULL;
1288 struct addrinfo *ai;
1289 struct sockaddr_in *sin;
1292 h = gethostbyname(node);
1294 return WSAGetLastError();
1297 ai = xmalloc(sizeof(struct addrinfo));
1300 ai->ai_family = AF_INET;
1301 ai->ai_socktype = hints ? hints->ai_socktype : 0;
1302 switch (ai->ai_socktype) {
1304 ai->ai_protocol = IPPROTO_TCP;
1307 ai->ai_protocol = IPPROTO_UDP;
1310 ai->ai_protocol = 0;
1313 ai->ai_addrlen = sizeof(struct sockaddr_in);
1314 if (hints && (hints->ai_flags & AI_CANONNAME))
1315 ai->ai_canonname = h ? xstrdup(h->h_name) : NULL;
1317 ai->ai_canonname = NULL;
1319 sin = xcalloc(1, ai->ai_addrlen);
1320 sin->sin_family = AF_INET;
1321 /* Note: getaddrinfo is supposed to allow service to be a string,
1322 * which should be looked up using getservbyname. This is
1323 * currently not implemented */
1325 sin->sin_port = htons(atoi(service));
1327 sin->sin_addr = *(struct in_addr *)h->h_addr;
1328 else if (hints && (hints->ai_flags & AI_PASSIVE))
1329 sin->sin_addr.s_addr = INADDR_ANY;
1331 sin->sin_addr.s_addr = INADDR_LOOPBACK;
1332 ai->ai_addr = (struct sockaddr *)sin;
1337 static void WSAAPI freeaddrinfo_stub(struct addrinfo *res)
1339 free(res->ai_canonname);
1344 static int WSAAPI getnameinfo_stub(const struct sockaddr *sa, socklen_t salen,
1345 char *host, DWORD hostlen,
1346 char *serv, DWORD servlen, int flags)
1348 const struct sockaddr_in *sin = (const struct sockaddr_in *)sa;
1349 if (sa->sa_family != AF_INET)
1354 if (host && hostlen > 0) {
1355 struct hostent *ent = NULL;
1356 if (!(flags & NI_NUMERICHOST))
1357 ent = gethostbyaddr((const char *)&sin->sin_addr,
1358 sizeof(sin->sin_addr), AF_INET);
1361 snprintf(host, hostlen, "%s", ent->h_name);
1362 else if (flags & NI_NAMEREQD)
1365 snprintf(host, hostlen, "%s", inet_ntoa(sin->sin_addr));
1368 if (serv && servlen > 0) {
1369 struct servent *ent = NULL;
1370 if (!(flags & NI_NUMERICSERV))
1371 ent = getservbyport(sin->sin_port,
1372 flags & NI_DGRAM ? "udp" : "tcp");
1375 snprintf(serv, servlen, "%s", ent->s_name);
1377 snprintf(serv, servlen, "%d", ntohs(sin->sin_port));
1383 static HMODULE ipv6_dll = NULL;
1384 static void (WSAAPI *ipv6_freeaddrinfo)(struct addrinfo *res);
1385 static int (WSAAPI *ipv6_getaddrinfo)(const char *node, const char *service,
1386 const struct addrinfo *hints,
1387 struct addrinfo **res);
1388 static int (WSAAPI *ipv6_getnameinfo)(const struct sockaddr *sa, socklen_t salen,
1389 char *host, DWORD hostlen,
1390 char *serv, DWORD servlen, int flags);
1392 * gai_strerror is an inline function in the ws2tcpip.h header, so we
1393 * don't need to try to load that one dynamically.
1396 static void socket_cleanup(void)
1400 FreeLibrary(ipv6_dll);
1402 ipv6_freeaddrinfo = freeaddrinfo_stub;
1403 ipv6_getaddrinfo = getaddrinfo_stub;
1404 ipv6_getnameinfo = getnameinfo_stub;
1407 static void ensure_socket_initialization(void)
1410 static int initialized = 0;
1411 const char *libraries[] = { "ws2_32.dll", "wship6.dll", NULL };
1417 if (WSAStartup(MAKEWORD(2,2), &wsa))
1418 die("unable to initialize winsock subsystem, error %d",
1421 for (name = libraries; *name; name++) {
1422 ipv6_dll = LoadLibrary(*name);
1426 ipv6_freeaddrinfo = (void (WSAAPI *)(struct addrinfo *))
1427 GetProcAddress(ipv6_dll, "freeaddrinfo");
1428 ipv6_getaddrinfo = (int (WSAAPI *)(const char *, const char *,
1429 const struct addrinfo *,
1430 struct addrinfo **))
1431 GetProcAddress(ipv6_dll, "getaddrinfo");
1432 ipv6_getnameinfo = (int (WSAAPI *)(const struct sockaddr *,
1433 socklen_t, char *, DWORD,
1434 char *, DWORD, int))
1435 GetProcAddress(ipv6_dll, "getnameinfo");
1436 if (!ipv6_freeaddrinfo || !ipv6_getaddrinfo || !ipv6_getnameinfo) {
1437 FreeLibrary(ipv6_dll);
1442 if (!ipv6_freeaddrinfo || !ipv6_getaddrinfo || !ipv6_getnameinfo) {
1443 ipv6_freeaddrinfo = freeaddrinfo_stub;
1444 ipv6_getaddrinfo = getaddrinfo_stub;
1445 ipv6_getnameinfo = getnameinfo_stub;
1448 atexit(socket_cleanup);
1453 int mingw_gethostname(char *name, int namelen)
1455 ensure_socket_initialization();
1456 return gethostname(name, namelen);
1459 #undef gethostbyname
1460 struct hostent *mingw_gethostbyname(const char *host)
1462 ensure_socket_initialization();
1463 return gethostbyname(host);
1466 void mingw_freeaddrinfo(struct addrinfo *res)
1468 ipv6_freeaddrinfo(res);
1471 int mingw_getaddrinfo(const char *node, const char *service,
1472 const struct addrinfo *hints, struct addrinfo **res)
1474 ensure_socket_initialization();
1475 return ipv6_getaddrinfo(node, service, hints, res);
1478 int mingw_getnameinfo(const struct sockaddr *sa, socklen_t salen,
1479 char *host, DWORD hostlen, char *serv, DWORD servlen,
1482 ensure_socket_initialization();
1483 return ipv6_getnameinfo(sa, salen, host, hostlen, serv, servlen, flags);
1486 int mingw_socket(int domain, int type, int protocol)
1491 ensure_socket_initialization();
1492 s = WSASocket(domain, type, protocol, NULL, 0, 0);
1493 if (s == INVALID_SOCKET) {
1495 * WSAGetLastError() values are regular BSD error codes
1496 * biased by WSABASEERR.
1497 * However, strerror() does not know about networking
1498 * specific errors, which are values beginning at 38 or so.
1499 * Therefore, we choose to leave the biased error code
1500 * in errno so that _if_ someone looks up the code somewhere,
1501 * then it is at least the number that are usually listed.
1503 errno = WSAGetLastError();
1506 /* convert into a file descriptor */
1507 if ((sockfd = _open_osfhandle(s, O_RDWR|O_BINARY)) < 0) {
1509 return error("unable to make a socket file descriptor: %s",
1516 int mingw_connect(int sockfd, struct sockaddr *sa, size_t sz)
1518 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
1519 return connect(s, sa, sz);
1523 int mingw_bind(int sockfd, struct sockaddr *sa, size_t sz)
1525 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
1526 return bind(s, sa, sz);
1530 int mingw_setsockopt(int sockfd, int lvl, int optname, void *optval, int optlen)
1532 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
1533 return setsockopt(s, lvl, optname, (const char*)optval, optlen);
1537 int mingw_shutdown(int sockfd, int how)
1539 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
1540 return shutdown(s, how);
1544 int mingw_listen(int sockfd, int backlog)
1546 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
1547 return listen(s, backlog);
1551 int mingw_accept(int sockfd1, struct sockaddr *sa, socklen_t *sz)
1555 SOCKET s1 = (SOCKET)_get_osfhandle(sockfd1);
1556 SOCKET s2 = accept(s1, sa, sz);
1558 /* convert into a file descriptor */
1559 if ((sockfd2 = _open_osfhandle(s2, O_RDWR|O_BINARY)) < 0) {
1562 return error("unable to make a socket file descriptor: %s",
1569 int mingw_rename(const char *pold, const char *pnew)
1573 wchar_t wpold[MAX_PATH], wpnew[MAX_PATH];
1574 if (xutftowcs_path(wpold, pold) < 0 || xutftowcs_path(wpnew, pnew) < 0)
1578 * Try native rename() first to get errno right.
1579 * It is based on MoveFile(), which cannot overwrite existing files.
1581 if (!_wrename(wpold, wpnew))
1583 if (errno != EEXIST)
1586 if (MoveFileExW(wpold, wpnew, MOVEFILE_REPLACE_EXISTING))
1588 /* TODO: translate more errors */
1589 gle = GetLastError();
1590 if (gle == ERROR_ACCESS_DENIED &&
1591 (attrs = GetFileAttributesW(wpnew)) != INVALID_FILE_ATTRIBUTES) {
1592 if (attrs & FILE_ATTRIBUTE_DIRECTORY) {
1596 if ((attrs & FILE_ATTRIBUTE_READONLY) &&
1597 SetFileAttributesW(wpnew, attrs & ~FILE_ATTRIBUTE_READONLY)) {
1598 if (MoveFileExW(wpold, wpnew, MOVEFILE_REPLACE_EXISTING))
1600 gle = GetLastError();
1601 /* revert file attributes on failure */
1602 SetFileAttributesW(wpnew, attrs);
1605 if (tries < ARRAY_SIZE(delay) && gle == ERROR_ACCESS_DENIED) {
1607 * We assume that some other process had the source or
1608 * destination file open at the wrong moment and retry.
1609 * In order to give the other process a higher chance to
1610 * complete its operation, we give up our time slice now.
1611 * If we have to retry again, we do sleep a bit.
1613 Sleep(delay[tries]);
1617 if (gle == ERROR_ACCESS_DENIED &&
1618 ask_yes_no_if_possible("Rename from '%s' to '%s' failed. "
1619 "Should I try again?", pold, pnew))
1627 * Note that this doesn't return the actual pagesize, but
1628 * the allocation granularity. If future Windows specific git code
1629 * needs the real getpagesize function, we need to find another solution.
1631 int mingw_getpagesize(void)
1635 return si.dwAllocationGranularity;
1638 struct passwd *getpwuid(int uid)
1640 static char user_name[100];
1641 static struct passwd p;
1643 DWORD len = sizeof(user_name);
1644 if (!GetUserName(user_name, &len))
1646 p.pw_name = user_name;
1647 p.pw_gecos = "unknown";
1652 static HANDLE timer_event;
1653 static HANDLE timer_thread;
1654 static int timer_interval;
1655 static int one_shot;
1656 static sig_handler_t timer_fn = SIG_DFL, sigint_fn = SIG_DFL;
1658 /* The timer works like this:
1659 * The thread, ticktack(), is a trivial routine that most of the time
1660 * only waits to receive the signal to terminate. The main thread tells
1661 * the thread to terminate by setting the timer_event to the signalled
1663 * But ticktack() interrupts the wait state after the timer's interval
1664 * length to call the signal handler.
1667 static unsigned __stdcall ticktack(void *dummy)
1669 while (WaitForSingleObject(timer_event, timer_interval) == WAIT_TIMEOUT) {
1670 mingw_raise(SIGALRM);
1677 static int start_timer_thread(void)
1679 timer_event = CreateEvent(NULL, FALSE, FALSE, NULL);
1681 timer_thread = (HANDLE) _beginthreadex(NULL, 0, ticktack, NULL, 0, NULL);
1683 return errno = ENOMEM,
1684 error("cannot start timer thread");
1686 return errno = ENOMEM,
1687 error("cannot allocate resources for timer");
1691 static void stop_timer_thread(void)
1694 SetEvent(timer_event); /* tell thread to terminate */
1696 int rc = WaitForSingleObject(timer_thread, 1000);
1697 if (rc == WAIT_TIMEOUT)
1698 error("timer thread did not terminate timely");
1699 else if (rc != WAIT_OBJECT_0)
1700 error("waiting for timer thread failed: %lu",
1702 CloseHandle(timer_thread);
1705 CloseHandle(timer_event);
1707 timer_thread = NULL;
1710 static inline int is_timeval_eq(const struct timeval *i1, const struct timeval *i2)
1712 return i1->tv_sec == i2->tv_sec && i1->tv_usec == i2->tv_usec;
1715 int setitimer(int type, struct itimerval *in, struct itimerval *out)
1717 static const struct timeval zero;
1718 static int atexit_done;
1721 return errno = EINVAL,
1722 error("setitimer param 3 != NULL not implemented");
1723 if (!is_timeval_eq(&in->it_interval, &zero) &&
1724 !is_timeval_eq(&in->it_interval, &in->it_value))
1725 return errno = EINVAL,
1726 error("setitimer: it_interval must be zero or eq it_value");
1729 stop_timer_thread();
1731 if (is_timeval_eq(&in->it_value, &zero) &&
1732 is_timeval_eq(&in->it_interval, &zero))
1735 timer_interval = in->it_value.tv_sec * 1000 + in->it_value.tv_usec / 1000;
1736 one_shot = is_timeval_eq(&in->it_interval, &zero);
1738 atexit(stop_timer_thread);
1741 return start_timer_thread();
1744 int sigaction(int sig, struct sigaction *in, struct sigaction *out)
1747 return errno = EINVAL,
1748 error("sigaction only implemented for SIGALRM");
1750 return errno = EINVAL,
1751 error("sigaction: param 3 != NULL not implemented");
1753 timer_fn = in->sa_handler;
1758 sig_handler_t mingw_signal(int sig, sig_handler_t handler)
1770 sigint_fn = handler;
1774 return signal(sig, handler);
1781 int mingw_raise(int sig)
1785 if (timer_fn == SIG_DFL) {
1786 if (isatty(STDERR_FILENO))
1787 fputs("Alarm clock\n", stderr);
1788 exit(128 + SIGALRM);
1789 } else if (timer_fn != SIG_IGN)
1794 if (sigint_fn == SIG_DFL)
1796 else if (sigint_fn != SIG_IGN)
1806 static const char *make_backslash_path(const char *path)
1808 static char buf[PATH_MAX + 1];
1811 if (strlcpy(buf, path, PATH_MAX) >= PATH_MAX)
1812 die("Too long path: %.*s", 60, path);
1814 for (c = buf; *c; c++) {
1821 void mingw_open_html(const char *unixpath)
1823 const char *htmlpath = make_backslash_path(unixpath);
1824 typedef HINSTANCE (WINAPI *T)(HWND, const char *,
1825 const char *, const char *, const char *, INT);
1830 shell32 = LoadLibrary("shell32.dll");
1832 die("cannot load shell32.dll");
1833 ShellExecute = (T)GetProcAddress(shell32, "ShellExecuteA");
1835 die("cannot run browser");
1837 printf("Launching default browser to display HTML ...\n");
1838 r = (int)ShellExecute(NULL, "open", htmlpath, NULL, "\\", SW_SHOWNORMAL);
1839 FreeLibrary(shell32);
1840 /* see the MSDN documentation referring to the result codes here */
1842 die("failed to launch browser for %.*s", MAX_PATH, unixpath);
1846 int link(const char *oldpath, const char *newpath)
1848 typedef BOOL (WINAPI *T)(LPCWSTR, LPCWSTR, LPSECURITY_ATTRIBUTES);
1849 static T create_hard_link = NULL;
1850 wchar_t woldpath[MAX_PATH], wnewpath[MAX_PATH];
1851 if (xutftowcs_path(woldpath, oldpath) < 0 ||
1852 xutftowcs_path(wnewpath, newpath) < 0)
1855 if (!create_hard_link) {
1856 create_hard_link = (T) GetProcAddress(
1857 GetModuleHandle("kernel32.dll"), "CreateHardLinkW");
1858 if (!create_hard_link)
1859 create_hard_link = (T)-1;
1861 if (create_hard_link == (T)-1) {
1865 if (!create_hard_link(wnewpath, woldpath, NULL)) {
1866 errno = err_win_to_posix(GetLastError());
1872 pid_t waitpid(pid_t pid, int *status, int options)
1874 HANDLE h = OpenProcess(SYNCHRONIZE | PROCESS_QUERY_INFORMATION,
1881 if (pid > 0 && options & WNOHANG) {
1882 if (WAIT_OBJECT_0 != WaitForSingleObject(h, 0)) {
1886 options &= ~WNOHANG;
1890 struct pinfo_t **ppinfo;
1891 if (WaitForSingleObject(h, INFINITE) != WAIT_OBJECT_0) {
1897 GetExitCodeProcess(h, (LPDWORD)status);
1899 EnterCriticalSection(&pinfo_cs);
1903 struct pinfo_t *info = *ppinfo;
1904 if (info->pid == pid) {
1905 CloseHandle(info->proc);
1906 *ppinfo = info->next;
1910 ppinfo = &info->next;
1913 LeaveCriticalSection(&pinfo_cs);
1924 int mingw_offset_1st_component(const char *path)
1927 if (has_dos_drive_prefix(path))
1931 else if (is_dir_sep(path[0]) && is_dir_sep(path[1])) {
1933 /* skip server name */
1934 char *pos = strpbrk(path + 2, "\\/");
1936 return 0; /* Error: malformed unc path */
1940 } while (*pos && !is_dir_sep(*pos));
1942 offset = pos - path;
1945 return offset + is_dir_sep(path[offset]);
1948 int xutftowcsn(wchar_t *wcs, const char *utfs, size_t wcslen, int utflen)
1950 int upos = 0, wpos = 0;
1951 const unsigned char *utf = (const unsigned char*) utfs;
1952 if (!utf || !wcs || wcslen < 1) {
1956 /* reserve space for \0 */
1961 while (upos < utflen) {
1962 int c = utf[upos++] & 0xff;
1963 if (utflen == INT_MAX && c == 0)
1966 if (wpos >= wcslen) {
1975 } else if (c >= 0xc2 && c < 0xe0 && upos < utflen &&
1976 (utf[upos] & 0xc0) == 0x80) {
1978 c = ((c & 0x1f) << 6);
1979 c |= (utf[upos++] & 0x3f);
1981 } else if (c >= 0xe0 && c < 0xf0 && upos + 1 < utflen &&
1982 !(c == 0xe0 && utf[upos] < 0xa0) && /* over-long encoding */
1983 (utf[upos] & 0xc0) == 0x80 &&
1984 (utf[upos + 1] & 0xc0) == 0x80) {
1986 c = ((c & 0x0f) << 12);
1987 c |= ((utf[upos++] & 0x3f) << 6);
1988 c |= (utf[upos++] & 0x3f);
1990 } else if (c >= 0xf0 && c < 0xf5 && upos + 2 < utflen &&
1991 wpos + 1 < wcslen &&
1992 !(c == 0xf0 && utf[upos] < 0x90) && /* over-long encoding */
1993 !(c == 0xf4 && utf[upos] >= 0x90) && /* > \u10ffff */
1994 (utf[upos] & 0xc0) == 0x80 &&
1995 (utf[upos + 1] & 0xc0) == 0x80 &&
1996 (utf[upos + 2] & 0xc0) == 0x80) {
1997 /* 4-byte utf-8: convert to \ud8xx \udcxx surrogate pair */
1998 c = ((c & 0x07) << 18);
1999 c |= ((utf[upos++] & 0x3f) << 12);
2000 c |= ((utf[upos++] & 0x3f) << 6);
2001 c |= (utf[upos++] & 0x3f);
2003 wcs[wpos++] = 0xd800 | (c >> 10);
2004 wcs[wpos++] = 0xdc00 | (c & 0x3ff);
2005 } else if (c >= 0xa0) {
2006 /* invalid utf-8 byte, printable unicode char: convert 1:1 */
2009 /* invalid utf-8 byte, non-printable unicode: convert to hex */
2010 static const char *hex = "0123456789abcdef";
2011 wcs[wpos++] = hex[c >> 4];
2013 wcs[wpos++] = hex[c & 0x0f];
2020 int xwcstoutf(char *utf, const wchar_t *wcs, size_t utflen)
2022 if (!wcs || !utf || utflen < 1) {
2026 utflen = WideCharToMultiByte(CP_UTF8, 0, wcs, -1, utf, utflen, NULL, NULL);
2034 * Disable MSVCRT command line wildcard expansion (__getmainargs called from
2035 * mingw startup code, see init.c in mingw runtime).
2043 extern int __wgetmainargs(int *argc, wchar_t ***argv, wchar_t ***env, int glob,
2046 static NORETURN void die_startup()
2048 fputs("fatal: not enough memory for initialization", stderr);
2052 void mingw_startup()
2054 int i, len, maxlen, argc;
2056 wchar_t **wenv, **wargv;
2059 /* get wide char arguments and environment */
2061 if (__wgetmainargs(&argc, &wargv, &wenv, _CRT_glob, &si) < 0)
2064 /* determine size of argv and environ conversion buffer */
2065 maxlen = wcslen(_wpgmptr);
2066 for (i = 1; i < argc; i++)
2067 maxlen = max(maxlen, wcslen(wargv[i]));
2069 /* allocate buffer (wchar_t encodes to max 3 UTF-8 bytes) */
2070 maxlen = 3 * maxlen + 1;
2071 buffer = xmalloc(maxlen);
2073 /* convert command line arguments and environment to UTF-8 */
2074 len = xwcstoutf(buffer, _wpgmptr, maxlen);
2075 __argv[0] = xmemdupz(buffer, len);
2076 for (i = 1; i < argc; i++) {
2077 len = xwcstoutf(buffer, wargv[i], maxlen);
2078 __argv[i] = xmemdupz(buffer, len);
2082 /* initialize critical section for waitpid pinfo_t list */
2083 InitializeCriticalSection(&pinfo_cs);
2085 /* set up default file mode and file modes for stdin/out/err */
2087 _setmode(_fileno(stdin), _O_BINARY);
2088 _setmode(_fileno(stdout), _O_BINARY);
2089 _setmode(_fileno(stderr), _O_BINARY);
2091 /* initialize Unicode console */