1 #include "../git-compat-util.h"
6 #include "../run-command.h"
8 #include "win32/lazyload.h"
12 #define HCAST(type, handle) ((type)(intptr_t)handle)
14 static const int delay[] = { 0, 1, 10, 20, 40 };
16 int err_win_to_posix(DWORD winerr)
20 case ERROR_ACCESS_DENIED: error = EACCES; break;
21 case ERROR_ACCOUNT_DISABLED: error = EACCES; break;
22 case ERROR_ACCOUNT_RESTRICTION: error = EACCES; break;
23 case ERROR_ALREADY_ASSIGNED: error = EBUSY; break;
24 case ERROR_ALREADY_EXISTS: error = EEXIST; break;
25 case ERROR_ARITHMETIC_OVERFLOW: error = ERANGE; break;
26 case ERROR_BAD_COMMAND: error = EIO; break;
27 case ERROR_BAD_DEVICE: error = ENODEV; break;
28 case ERROR_BAD_DRIVER_LEVEL: error = ENXIO; break;
29 case ERROR_BAD_EXE_FORMAT: error = ENOEXEC; break;
30 case ERROR_BAD_FORMAT: error = ENOEXEC; break;
31 case ERROR_BAD_LENGTH: error = EINVAL; break;
32 case ERROR_BAD_PATHNAME: error = ENOENT; break;
33 case ERROR_BAD_PIPE: error = EPIPE; break;
34 case ERROR_BAD_UNIT: error = ENODEV; break;
35 case ERROR_BAD_USERNAME: error = EINVAL; break;
36 case ERROR_BROKEN_PIPE: error = EPIPE; break;
37 case ERROR_BUFFER_OVERFLOW: error = ENAMETOOLONG; break;
38 case ERROR_BUSY: error = EBUSY; break;
39 case ERROR_BUSY_DRIVE: error = EBUSY; break;
40 case ERROR_CALL_NOT_IMPLEMENTED: error = ENOSYS; break;
41 case ERROR_CANNOT_MAKE: error = EACCES; break;
42 case ERROR_CANTOPEN: error = EIO; break;
43 case ERROR_CANTREAD: error = EIO; break;
44 case ERROR_CANTWRITE: error = EIO; break;
45 case ERROR_CRC: error = EIO; break;
46 case ERROR_CURRENT_DIRECTORY: error = EACCES; break;
47 case ERROR_DEVICE_IN_USE: error = EBUSY; break;
48 case ERROR_DEV_NOT_EXIST: error = ENODEV; break;
49 case ERROR_DIRECTORY: error = EINVAL; break;
50 case ERROR_DIR_NOT_EMPTY: error = ENOTEMPTY; break;
51 case ERROR_DISK_CHANGE: error = EIO; break;
52 case ERROR_DISK_FULL: error = ENOSPC; break;
53 case ERROR_DRIVE_LOCKED: error = EBUSY; break;
54 case ERROR_ENVVAR_NOT_FOUND: error = EINVAL; break;
55 case ERROR_EXE_MARKED_INVALID: error = ENOEXEC; break;
56 case ERROR_FILENAME_EXCED_RANGE: error = ENAMETOOLONG; break;
57 case ERROR_FILE_EXISTS: error = EEXIST; break;
58 case ERROR_FILE_INVALID: error = ENODEV; break;
59 case ERROR_FILE_NOT_FOUND: error = ENOENT; break;
60 case ERROR_GEN_FAILURE: error = EIO; break;
61 case ERROR_HANDLE_DISK_FULL: error = ENOSPC; break;
62 case ERROR_INSUFFICIENT_BUFFER: error = ENOMEM; break;
63 case ERROR_INVALID_ACCESS: error = EACCES; break;
64 case ERROR_INVALID_ADDRESS: error = EFAULT; break;
65 case ERROR_INVALID_BLOCK: error = EFAULT; break;
66 case ERROR_INVALID_DATA: error = EINVAL; break;
67 case ERROR_INVALID_DRIVE: error = ENODEV; break;
68 case ERROR_INVALID_EXE_SIGNATURE: error = ENOEXEC; break;
69 case ERROR_INVALID_FLAGS: error = EINVAL; break;
70 case ERROR_INVALID_FUNCTION: error = ENOSYS; break;
71 case ERROR_INVALID_HANDLE: error = EBADF; break;
72 case ERROR_INVALID_LOGON_HOURS: error = EACCES; break;
73 case ERROR_INVALID_NAME: error = EINVAL; break;
74 case ERROR_INVALID_OWNER: error = EINVAL; break;
75 case ERROR_INVALID_PARAMETER: error = EINVAL; break;
76 case ERROR_INVALID_PASSWORD: error = EPERM; break;
77 case ERROR_INVALID_PRIMARY_GROUP: error = EINVAL; break;
78 case ERROR_INVALID_SIGNAL_NUMBER: error = EINVAL; break;
79 case ERROR_INVALID_TARGET_HANDLE: error = EIO; break;
80 case ERROR_INVALID_WORKSTATION: error = EACCES; break;
81 case ERROR_IO_DEVICE: error = EIO; break;
82 case ERROR_IO_INCOMPLETE: error = EINTR; break;
83 case ERROR_LOCKED: error = EBUSY; break;
84 case ERROR_LOCK_VIOLATION: error = EACCES; break;
85 case ERROR_LOGON_FAILURE: error = EACCES; break;
86 case ERROR_MAPPED_ALIGNMENT: error = EINVAL; break;
87 case ERROR_META_EXPANSION_TOO_LONG: error = E2BIG; break;
88 case ERROR_MORE_DATA: error = EPIPE; break;
89 case ERROR_NEGATIVE_SEEK: error = ESPIPE; break;
90 case ERROR_NOACCESS: error = EFAULT; break;
91 case ERROR_NONE_MAPPED: error = EINVAL; break;
92 case ERROR_NOT_ENOUGH_MEMORY: error = ENOMEM; break;
93 case ERROR_NOT_READY: error = EAGAIN; break;
94 case ERROR_NOT_SAME_DEVICE: error = EXDEV; break;
95 case ERROR_NO_DATA: error = EPIPE; break;
96 case ERROR_NO_MORE_SEARCH_HANDLES: error = EIO; break;
97 case ERROR_NO_PROC_SLOTS: error = EAGAIN; break;
98 case ERROR_NO_SUCH_PRIVILEGE: error = EACCES; break;
99 case ERROR_OPEN_FAILED: error = EIO; break;
100 case ERROR_OPEN_FILES: error = EBUSY; break;
101 case ERROR_OPERATION_ABORTED: error = EINTR; break;
102 case ERROR_OUTOFMEMORY: error = ENOMEM; break;
103 case ERROR_PASSWORD_EXPIRED: error = EACCES; break;
104 case ERROR_PATH_BUSY: error = EBUSY; break;
105 case ERROR_PATH_NOT_FOUND: error = ENOENT; break;
106 case ERROR_PIPE_BUSY: error = EBUSY; break;
107 case ERROR_PIPE_CONNECTED: error = EPIPE; break;
108 case ERROR_PIPE_LISTENING: error = EPIPE; break;
109 case ERROR_PIPE_NOT_CONNECTED: error = EPIPE; break;
110 case ERROR_PRIVILEGE_NOT_HELD: error = EACCES; break;
111 case ERROR_READ_FAULT: error = EIO; break;
112 case ERROR_SEEK: error = EIO; break;
113 case ERROR_SEEK_ON_DEVICE: error = ESPIPE; break;
114 case ERROR_SHARING_BUFFER_EXCEEDED: error = ENFILE; break;
115 case ERROR_SHARING_VIOLATION: error = EACCES; break;
116 case ERROR_STACK_OVERFLOW: error = ENOMEM; break;
117 case ERROR_SWAPERROR: error = ENOENT; break;
118 case ERROR_TOO_MANY_MODULES: error = EMFILE; break;
119 case ERROR_TOO_MANY_OPEN_FILES: error = EMFILE; break;
120 case ERROR_UNRECOGNIZED_MEDIA: error = ENXIO; break;
121 case ERROR_UNRECOGNIZED_VOLUME: error = ENODEV; break;
122 case ERROR_WAIT_NO_CHILDREN: error = ECHILD; break;
123 case ERROR_WRITE_FAULT: error = EIO; break;
124 case ERROR_WRITE_PROTECT: error = EROFS; break;
129 static inline int is_file_in_use_error(DWORD errcode)
132 case ERROR_SHARING_VIOLATION:
133 case ERROR_ACCESS_DENIED:
140 static int read_yes_no_answer(void)
144 if (fgets(answer, sizeof(answer), stdin)) {
145 size_t answer_len = strlen(answer);
146 int got_full_line = 0, c;
148 /* remove the newline */
149 if (answer_len >= 2 && answer[answer_len-2] == '\r') {
150 answer[answer_len-2] = '\0';
152 } else if (answer_len >= 1 && answer[answer_len-1] == '\n') {
153 answer[answer_len-1] = '\0';
156 /* flush the buffer in case we did not get the full line */
158 while ((c = getchar()) != EOF && c != '\n')
161 /* we could not read, return the
162 * default answer which is no */
165 if (tolower(answer[0]) == 'y' && !answer[1])
167 if (!strncasecmp(answer, "yes", sizeof(answer)))
169 if (tolower(answer[0]) == 'n' && !answer[1])
171 if (!strncasecmp(answer, "no", sizeof(answer)))
174 /* did not find an answer we understand */
178 static int ask_yes_no_if_possible(const char *format, ...)
181 const char *retry_hook[] = { NULL, NULL, NULL };
184 va_start(args, format);
185 vsnprintf(question, sizeof(question), format, args);
188 if ((retry_hook[0] = mingw_getenv("GIT_ASK_YESNO"))) {
189 retry_hook[1] = question;
190 return !run_command_v_opt(retry_hook, 0);
193 if (!isatty(_fileno(stdin)) || !isatty(_fileno(stderr)))
198 fprintf(stderr, "%s (y/n) ", question);
200 if ((answer = read_yes_no_answer()) >= 0)
203 fprintf(stderr, "Sorry, I did not understand your answer. "
204 "Please type 'y' or 'n'\n");
209 enum hide_dotfiles_type {
210 HIDE_DOTFILES_FALSE = 0,
212 HIDE_DOTFILES_DOTGITONLY
215 static enum hide_dotfiles_type hide_dotfiles = HIDE_DOTFILES_DOTGITONLY;
216 static char *unset_environment_variables;
218 int mingw_core_config(const char *var, const char *value, void *cb)
220 if (!strcmp(var, "core.hidedotfiles")) {
221 if (value && !strcasecmp(value, "dotgitonly"))
222 hide_dotfiles = HIDE_DOTFILES_DOTGITONLY;
224 hide_dotfiles = git_config_bool(var, value);
228 if (!strcmp(var, "core.unsetenvvars")) {
229 free(unset_environment_variables);
230 unset_environment_variables = xstrdup(value);
237 /* Normalizes NT paths as returned by some low-level APIs. */
238 static wchar_t *normalize_ntpath(wchar_t *wbuf)
241 /* fix absolute path prefixes */
242 if (wbuf[0] == '\\') {
243 /* strip NT namespace prefixes */
244 if (!wcsncmp(wbuf, L"\\??\\", 4) ||
245 !wcsncmp(wbuf, L"\\\\?\\", 4))
247 else if (!wcsnicmp(wbuf, L"\\DosDevices\\", 12))
249 /* replace remaining '...UNC\' with '\\' */
250 if (!wcsnicmp(wbuf, L"UNC\\", 4)) {
255 /* convert backslashes to slashes */
256 for (i = 0; wbuf[i]; i++)
262 int mingw_unlink(const char *pathname)
265 wchar_t wpathname[MAX_PATH];
266 if (xutftowcs_path(wpathname, pathname) < 0)
269 /* read-only files cannot be removed */
270 _wchmod(wpathname, 0666);
271 while ((ret = _wunlink(wpathname)) == -1 && tries < ARRAY_SIZE(delay)) {
272 if (!is_file_in_use_error(GetLastError()))
275 * We assume that some other process had the source or
276 * destination file open at the wrong moment and retry.
277 * In order to give the other process a higher chance to
278 * complete its operation, we give up our time slice now.
279 * If we have to retry again, we do sleep a bit.
284 while (ret == -1 && is_file_in_use_error(GetLastError()) &&
285 ask_yes_no_if_possible("Unlink of file '%s' failed. "
286 "Should I try again?", pathname))
287 ret = _wunlink(wpathname);
291 static int is_dir_empty(const wchar_t *wpath)
293 WIN32_FIND_DATAW findbuf;
295 wchar_t wbuf[MAX_PATH + 2];
297 wcscat(wbuf, L"\\*");
298 handle = FindFirstFileW(wbuf, &findbuf);
299 if (handle == INVALID_HANDLE_VALUE)
300 return GetLastError() == ERROR_NO_MORE_FILES;
302 while (!wcscmp(findbuf.cFileName, L".") ||
303 !wcscmp(findbuf.cFileName, L".."))
304 if (!FindNextFileW(handle, &findbuf)) {
305 DWORD err = GetLastError();
307 return err == ERROR_NO_MORE_FILES;
313 int mingw_rmdir(const char *pathname)
316 wchar_t wpathname[MAX_PATH];
317 if (xutftowcs_path(wpathname, pathname) < 0)
320 while ((ret = _wrmdir(wpathname)) == -1 && tries < ARRAY_SIZE(delay)) {
321 if (!is_file_in_use_error(GetLastError()))
322 errno = err_win_to_posix(GetLastError());
325 if (!is_dir_empty(wpathname)) {
330 * We assume that some other process had the source or
331 * destination file open at the wrong moment and retry.
332 * In order to give the other process a higher chance to
333 * complete its operation, we give up our time slice now.
334 * If we have to retry again, we do sleep a bit.
339 while (ret == -1 && errno == EACCES && is_file_in_use_error(GetLastError()) &&
340 ask_yes_no_if_possible("Deletion of directory '%s' failed. "
341 "Should I try again?", pathname))
342 ret = _wrmdir(wpathname);
346 static inline int needs_hiding(const char *path)
348 const char *basename;
350 if (hide_dotfiles == HIDE_DOTFILES_FALSE)
353 /* We cannot use basename(), as it would remove trailing slashes */
354 win32_skip_dos_drive_prefix((char **)&path);
358 for (basename = path; *path; path++)
359 if (is_dir_sep(*path)) {
362 } while (is_dir_sep(*path));
363 /* ignore trailing slashes */
370 if (hide_dotfiles == HIDE_DOTFILES_TRUE)
371 return *basename == '.';
373 assert(hide_dotfiles == HIDE_DOTFILES_DOTGITONLY);
374 return !strncasecmp(".git", basename, 4) &&
375 (!basename[4] || is_dir_sep(basename[4]));
378 static int set_hidden_flag(const wchar_t *path, int set)
380 DWORD original = GetFileAttributesW(path), modified;
382 modified = original | FILE_ATTRIBUTE_HIDDEN;
384 modified = original & ~FILE_ATTRIBUTE_HIDDEN;
385 if (original == modified || SetFileAttributesW(path, modified))
387 errno = err_win_to_posix(GetLastError());
391 int mingw_mkdir(const char *path, int mode)
394 wchar_t wpath[MAX_PATH];
396 if (!is_valid_win32_path(path, 0)) {
401 if (xutftowcs_path(wpath, path) < 0)
403 ret = _wmkdir(wpath);
404 if (!ret && needs_hiding(path))
405 return set_hidden_flag(wpath, 1);
410 * Calling CreateFile() using FILE_APPEND_DATA and without FILE_WRITE_DATA
411 * is documented in [1] as opening a writable file handle in append mode.
412 * (It is believed that) this is atomic since it is maintained by the
413 * kernel unlike the O_APPEND flag which is racily maintained by the CRT.
415 * [1] https://docs.microsoft.com/en-us/windows/desktop/fileio/file-access-rights-constants
417 * This trick does not appear to work for named pipes. Instead it creates
418 * a named pipe client handle that cannot be written to. Callers should
419 * just use the regular _wopen() for them. (And since client handle gets
420 * bound to a unique server handle, it isn't really an issue.)
422 static int mingw_open_append(wchar_t const *wfilename, int oflags, ...)
426 DWORD create = (oflags & O_CREAT) ? OPEN_ALWAYS : OPEN_EXISTING;
428 /* only these flags are supported */
429 if ((oflags & ~O_CREAT) != (O_WRONLY | O_APPEND))
430 return errno = ENOSYS, -1;
433 * FILE_SHARE_WRITE is required to permit child processes
434 * to append to the file.
436 handle = CreateFileW(wfilename, FILE_APPEND_DATA,
437 FILE_SHARE_WRITE | FILE_SHARE_READ,
438 NULL, create, FILE_ATTRIBUTE_NORMAL, NULL);
439 if (handle == INVALID_HANDLE_VALUE)
440 return errno = err_win_to_posix(GetLastError()), -1;
443 * No O_APPEND here, because the CRT uses it only to reset the
444 * file pointer to EOF before each write(); but that is not
445 * necessary (and may lead to races) for a file created with
448 fd = _open_osfhandle((intptr_t)handle, O_BINARY);
455 * Does the pathname map to the local named pipe filesystem?
456 * That is, does it have a "//./pipe/" prefix?
458 static int is_local_named_pipe_path(const char *filename)
460 return (is_dir_sep(filename[0]) &&
461 is_dir_sep(filename[1]) &&
462 filename[2] == '.' &&
463 is_dir_sep(filename[3]) &&
464 !strncasecmp(filename+4, "pipe", 4) &&
465 is_dir_sep(filename[8]) &&
469 int mingw_open (const char *filename, int oflags, ...)
471 typedef int (*open_fn_t)(wchar_t const *wfilename, int oflags, ...);
474 int fd, create = (oflags & (O_CREAT | O_EXCL)) == (O_CREAT | O_EXCL);
475 wchar_t wfilename[MAX_PATH];
478 va_start(args, oflags);
479 mode = va_arg(args, int);
482 if (!is_valid_win32_path(filename, !create)) {
483 errno = create ? EINVAL : ENOENT;
487 if ((oflags & O_APPEND) && !is_local_named_pipe_path(filename))
488 open_fn = mingw_open_append;
492 if (filename && !strcmp(filename, "/dev/null"))
493 wcscpy(wfilename, L"nul");
494 else if (xutftowcs_path(wfilename, filename) < 0)
497 fd = open_fn(wfilename, oflags, mode);
499 if (fd < 0 && (oflags & O_ACCMODE) != O_RDONLY && errno == EACCES) {
500 DWORD attrs = GetFileAttributesW(wfilename);
501 if (attrs != INVALID_FILE_ATTRIBUTES && (attrs & FILE_ATTRIBUTE_DIRECTORY))
504 if ((oflags & O_CREAT) && needs_hiding(filename)) {
506 * Internally, _wopen() uses the CreateFile() API which errors
507 * out with an ERROR_ACCESS_DENIED if CREATE_ALWAYS was
508 * specified and an already existing file's attributes do not
509 * match *exactly*. As there is no mode or flag we can set that
510 * would correspond to FILE_ATTRIBUTE_HIDDEN, let's just try
511 * again *without* the O_CREAT flag (that corresponds to the
512 * CREATE_ALWAYS flag of CreateFile()).
514 if (fd < 0 && errno == EACCES)
515 fd = open_fn(wfilename, oflags & ~O_CREAT, mode);
516 if (fd >= 0 && set_hidden_flag(wfilename, 1))
517 warning("could not mark '%s' as hidden.", filename);
522 static BOOL WINAPI ctrl_ignore(DWORD type)
528 int mingw_fgetc(FILE *stream)
531 if (!isatty(_fileno(stream)))
532 return fgetc(stream);
534 SetConsoleCtrlHandler(ctrl_ignore, TRUE);
537 if (ch != EOF || GetLastError() != ERROR_OPERATION_ABORTED)
540 /* Ctrl+C was pressed, simulate SIGINT and retry */
543 SetConsoleCtrlHandler(ctrl_ignore, FALSE);
548 FILE *mingw_fopen (const char *filename, const char *otype)
550 int hide = needs_hiding(filename);
552 wchar_t wfilename[MAX_PATH], wotype[4];
553 if (filename && !strcmp(filename, "/dev/null"))
554 wcscpy(wfilename, L"nul");
555 else if (!is_valid_win32_path(filename, 1)) {
556 int create = otype && strchr(otype, 'w');
557 errno = create ? EINVAL : ENOENT;
559 } else if (xutftowcs_path(wfilename, filename) < 0)
562 if (xutftowcs(wotype, otype, ARRAY_SIZE(wotype)) < 0)
565 if (hide && !access(filename, F_OK) && set_hidden_flag(wfilename, 0)) {
566 error("could not unhide %s", filename);
569 file = _wfopen(wfilename, wotype);
570 if (!file && GetLastError() == ERROR_INVALID_NAME)
572 if (file && hide && set_hidden_flag(wfilename, 1))
573 warning("could not mark '%s' as hidden.", filename);
577 FILE *mingw_freopen (const char *filename, const char *otype, FILE *stream)
579 int hide = needs_hiding(filename);
581 wchar_t wfilename[MAX_PATH], wotype[4];
582 if (filename && !strcmp(filename, "/dev/null"))
583 wcscpy(wfilename, L"nul");
584 else if (!is_valid_win32_path(filename, 1)) {
585 int create = otype && strchr(otype, 'w');
586 errno = create ? EINVAL : ENOENT;
588 } else if (xutftowcs_path(wfilename, filename) < 0)
591 if (xutftowcs(wotype, otype, ARRAY_SIZE(wotype)) < 0)
594 if (hide && !access(filename, F_OK) && set_hidden_flag(wfilename, 0)) {
595 error("could not unhide %s", filename);
598 file = _wfreopen(wfilename, wotype, stream);
599 if (file && hide && set_hidden_flag(wfilename, 1))
600 warning("could not mark '%s' as hidden.", filename);
605 int mingw_fflush(FILE *stream)
607 int ret = fflush(stream);
610 * write() is used behind the scenes of stdio output functions.
611 * Since git code does not check for errors after each stdio write
612 * operation, it can happen that write() is called by a later
613 * stdio function even if an earlier write() call failed. In the
614 * case of a pipe whose readable end was closed, only the first
615 * call to write() reports EPIPE on Windows. Subsequent write()
616 * calls report EINVAL. It is impossible to notice whether this
617 * fflush invocation triggered such a case, therefore, we have to
618 * catch all EINVAL errors whole-sale.
620 if (ret && errno == EINVAL)
627 ssize_t mingw_write(int fd, const void *buf, size_t len)
629 ssize_t result = write(fd, buf, len);
631 if (result < 0 && errno == EINVAL && buf) {
632 /* check if fd is a pipe */
633 HANDLE h = (HANDLE) _get_osfhandle(fd);
634 if (GetFileType(h) == FILE_TYPE_PIPE)
643 int mingw_access(const char *filename, int mode)
645 wchar_t wfilename[MAX_PATH];
646 if (xutftowcs_path(wfilename, filename) < 0)
648 /* X_OK is not supported by the MSVCRT version */
649 return _waccess(wfilename, mode & ~X_OK);
652 int mingw_chdir(const char *dirname)
654 wchar_t wdirname[MAX_PATH];
655 if (xutftowcs_path(wdirname, dirname) < 0)
657 return _wchdir(wdirname);
660 int mingw_chmod(const char *filename, int mode)
662 wchar_t wfilename[MAX_PATH];
663 if (xutftowcs_path(wfilename, filename) < 0)
665 return _wchmod(wfilename, mode);
669 * The unit of FILETIME is 100-nanoseconds since January 1, 1601, UTC.
670 * Returns the 100-nanoseconds ("hekto nanoseconds") since the epoch.
672 static inline long long filetime_to_hnsec(const FILETIME *ft)
674 long long winTime = ((long long)ft->dwHighDateTime << 32) + ft->dwLowDateTime;
675 /* Windows to Unix Epoch conversion */
676 return winTime - 116444736000000000LL;
679 static inline void filetime_to_timespec(const FILETIME *ft, struct timespec *ts)
681 long long hnsec = filetime_to_hnsec(ft);
682 ts->tv_sec = (time_t)(hnsec / 10000000);
683 ts->tv_nsec = (hnsec % 10000000) * 100;
687 * Verifies that safe_create_leading_directories() would succeed.
689 static int has_valid_directory_prefix(wchar_t *wfilename)
691 int n = wcslen(wfilename);
694 wchar_t c = wfilename[--n];
700 wfilename[n] = L'\0';
701 attributes = GetFileAttributesW(wfilename);
703 if (attributes == FILE_ATTRIBUTE_DIRECTORY ||
704 attributes == FILE_ATTRIBUTE_DEVICE)
706 if (attributes == INVALID_FILE_ATTRIBUTES)
707 switch (GetLastError()) {
708 case ERROR_PATH_NOT_FOUND:
710 case ERROR_FILE_NOT_FOUND:
711 /* This implies parent directory exists. */
719 /* We keep the do_lstat code in a separate function to avoid recursion.
720 * When a path ends with a slash, the stat will fail with ENOENT. In
721 * this case, we strip the trailing slashes and stat again.
723 * If follow is true then act like stat() and report on the link
724 * target. Otherwise report on the link itself.
726 static int do_lstat(int follow, const char *file_name, struct stat *buf)
728 WIN32_FILE_ATTRIBUTE_DATA fdata;
729 wchar_t wfilename[MAX_PATH];
730 if (xutftowcs_path(wfilename, file_name) < 0)
733 if (GetFileAttributesExW(wfilename, GetFileExInfoStandard, &fdata)) {
738 buf->st_mode = file_attr_to_st_mode(fdata.dwFileAttributes);
739 buf->st_size = fdata.nFileSizeLow |
740 (((off_t)fdata.nFileSizeHigh)<<32);
741 buf->st_dev = buf->st_rdev = 0; /* not used by Git */
742 filetime_to_timespec(&(fdata.ftLastAccessTime), &(buf->st_atim));
743 filetime_to_timespec(&(fdata.ftLastWriteTime), &(buf->st_mtim));
744 filetime_to_timespec(&(fdata.ftCreationTime), &(buf->st_ctim));
745 if (fdata.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) {
746 WIN32_FIND_DATAW findbuf;
747 HANDLE handle = FindFirstFileW(wfilename, &findbuf);
748 if (handle != INVALID_HANDLE_VALUE) {
749 if ((findbuf.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) &&
750 (findbuf.dwReserved0 == IO_REPARSE_TAG_SYMLINK)) {
752 char buffer[MAXIMUM_REPARSE_DATA_BUFFER_SIZE];
753 buf->st_size = readlink(file_name, buffer, MAXIMUM_REPARSE_DATA_BUFFER_SIZE);
755 buf->st_mode = S_IFLNK;
757 buf->st_mode |= S_IREAD;
758 if (!(findbuf.dwFileAttributes & FILE_ATTRIBUTE_READONLY))
759 buf->st_mode |= S_IWRITE;
766 switch (GetLastError()) {
767 case ERROR_ACCESS_DENIED:
768 case ERROR_SHARING_VIOLATION:
769 case ERROR_LOCK_VIOLATION:
770 case ERROR_SHARING_BUFFER_EXCEEDED:
773 case ERROR_BUFFER_OVERFLOW:
774 errno = ENAMETOOLONG;
776 case ERROR_NOT_ENOUGH_MEMORY:
779 case ERROR_PATH_NOT_FOUND:
780 if (!has_valid_directory_prefix(wfilename)) {
792 /* We provide our own lstat/fstat functions, since the provided
793 * lstat/fstat functions are so slow. These stat functions are
794 * tailored for Git's usage (read: fast), and are not meant to be
795 * complete. Note that Git stat()s are redirected to mingw_lstat()
796 * too, since Windows doesn't really handle symlinks that well.
798 static int do_stat_internal(int follow, const char *file_name, struct stat *buf)
801 char alt_name[PATH_MAX];
803 if (!do_lstat(follow, file_name, buf))
806 /* if file_name ended in a '/', Windows returned ENOENT;
807 * try again without trailing slashes
812 namelen = strlen(file_name);
813 if (namelen && file_name[namelen-1] != '/')
815 while (namelen && file_name[namelen-1] == '/')
817 if (!namelen || namelen >= PATH_MAX)
820 memcpy(alt_name, file_name, namelen);
821 alt_name[namelen] = 0;
822 return do_lstat(follow, alt_name, buf);
825 static int get_file_info_by_handle(HANDLE hnd, struct stat *buf)
827 BY_HANDLE_FILE_INFORMATION fdata;
829 if (!GetFileInformationByHandle(hnd, &fdata)) {
830 errno = err_win_to_posix(GetLastError());
838 buf->st_mode = file_attr_to_st_mode(fdata.dwFileAttributes);
839 buf->st_size = fdata.nFileSizeLow |
840 (((off_t)fdata.nFileSizeHigh)<<32);
841 buf->st_dev = buf->st_rdev = 0; /* not used by Git */
842 filetime_to_timespec(&(fdata.ftLastAccessTime), &(buf->st_atim));
843 filetime_to_timespec(&(fdata.ftLastWriteTime), &(buf->st_mtim));
844 filetime_to_timespec(&(fdata.ftCreationTime), &(buf->st_ctim));
848 int mingw_lstat(const char *file_name, struct stat *buf)
850 return do_stat_internal(0, file_name, buf);
852 int mingw_stat(const char *file_name, struct stat *buf)
854 return do_stat_internal(1, file_name, buf);
857 int mingw_fstat(int fd, struct stat *buf)
859 HANDLE fh = (HANDLE)_get_osfhandle(fd);
860 DWORD avail, type = GetFileType(fh) & ~FILE_TYPE_REMOTE;
864 return get_file_info_by_handle(fh, buf);
868 /* initialize stat fields */
869 memset(buf, 0, sizeof(*buf));
872 if (type == FILE_TYPE_CHAR) {
873 buf->st_mode = _S_IFCHR;
875 buf->st_mode = _S_IFIFO;
876 if (PeekNamedPipe(fh, NULL, 0, NULL, &avail, NULL))
877 buf->st_size = avail;
887 static inline void time_t_to_filetime(time_t t, FILETIME *ft)
889 long long winTime = t * 10000000LL + 116444736000000000LL;
890 ft->dwLowDateTime = winTime;
891 ft->dwHighDateTime = winTime >> 32;
894 int mingw_utime (const char *file_name, const struct utimbuf *times)
899 wchar_t wfilename[MAX_PATH];
900 if (xutftowcs_path(wfilename, file_name) < 0)
903 /* must have write permission */
904 attrs = GetFileAttributesW(wfilename);
905 if (attrs != INVALID_FILE_ATTRIBUTES &&
906 (attrs & FILE_ATTRIBUTE_READONLY)) {
907 /* ignore errors here; open() will report them */
908 SetFileAttributesW(wfilename, attrs & ~FILE_ATTRIBUTE_READONLY);
911 if ((fh = _wopen(wfilename, O_RDWR | O_BINARY)) < 0) {
917 time_t_to_filetime(times->modtime, &mft);
918 time_t_to_filetime(times->actime, &aft);
920 GetSystemTimeAsFileTime(&mft);
923 if (!SetFileTime((HANDLE)_get_osfhandle(fh), NULL, &aft, &mft)) {
931 if (attrs != INVALID_FILE_ATTRIBUTES &&
932 (attrs & FILE_ATTRIBUTE_READONLY)) {
933 /* ignore errors again */
934 SetFileAttributesW(wfilename, attrs);
940 size_t mingw_strftime(char *s, size_t max,
941 const char *format, const struct tm *tm)
943 size_t ret = strftime(s, max, format, tm);
945 if (!ret && errno == EINVAL)
946 die("invalid strftime format: '%s'", format);
950 unsigned int sleep (unsigned int seconds)
956 char *mingw_mktemp(char *template)
958 wchar_t wtemplate[MAX_PATH];
959 if (xutftowcs_path(wtemplate, template) < 0)
961 if (!_wmktemp(wtemplate))
963 if (xwcstoutf(template, wtemplate, strlen(template) + 1) < 0)
968 int mkstemp(char *template)
970 char *filename = mktemp(template);
971 if (filename == NULL)
973 return open(filename, O_RDWR | O_CREAT, 0600);
976 int gettimeofday(struct timeval *tv, void *tz)
981 GetSystemTimeAsFileTime(&ft);
982 hnsec = filetime_to_hnsec(&ft);
983 tv->tv_sec = hnsec / 10000000;
984 tv->tv_usec = (hnsec % 10000000) / 10;
988 int pipe(int filedes[2])
992 /* this creates non-inheritable handles */
993 if (!CreatePipe(&h[0], &h[1], NULL, 8192)) {
994 errno = err_win_to_posix(GetLastError());
997 filedes[0] = _open_osfhandle(HCAST(int, h[0]), O_NOINHERIT);
998 if (filedes[0] < 0) {
1003 filedes[1] = _open_osfhandle(HCAST(int, h[1]), O_NOINHERIT);
1004 if (filedes[1] < 0) {
1012 struct tm *gmtime_r(const time_t *timep, struct tm *result)
1014 /* gmtime() in MSVCRT.DLL is thread-safe, but not reentrant */
1015 memcpy(result, gmtime(timep), sizeof(struct tm));
1019 struct tm *localtime_r(const time_t *timep, struct tm *result)
1021 /* localtime() in MSVCRT.DLL is thread-safe, but not reentrant */
1022 memcpy(result, localtime(timep), sizeof(struct tm));
1026 char *mingw_getcwd(char *pointer, int len)
1028 wchar_t cwd[MAX_PATH], wpointer[MAX_PATH];
1029 DWORD ret = GetCurrentDirectoryW(ARRAY_SIZE(cwd), cwd);
1031 if (!ret || ret >= ARRAY_SIZE(cwd)) {
1032 errno = ret ? ENAMETOOLONG : err_win_to_posix(GetLastError());
1035 ret = GetLongPathNameW(cwd, wpointer, ARRAY_SIZE(wpointer));
1036 if (!ret && GetLastError() == ERROR_ACCESS_DENIED) {
1037 HANDLE hnd = CreateFileW(cwd, 0,
1038 FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, NULL,
1039 OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL);
1040 if (hnd == INVALID_HANDLE_VALUE)
1042 ret = GetFinalPathNameByHandleW(hnd, wpointer, ARRAY_SIZE(wpointer), 0);
1044 if (!ret || ret >= ARRAY_SIZE(wpointer))
1046 if (xwcstoutf(pointer, normalize_ntpath(wpointer), len) < 0)
1050 if (!ret || ret >= ARRAY_SIZE(wpointer))
1052 if (xwcstoutf(pointer, wpointer, len) < 0)
1054 convert_slashes(pointer);
1059 * See "Parsing C++ Command-Line Arguments" at Microsoft's Docs:
1060 * https://docs.microsoft.com/en-us/cpp/cpp/parsing-cpp-command-line-arguments
1062 static const char *quote_arg_msvc(const char *arg)
1064 /* count chars to quote */
1066 int force_quotes = 0;
1068 const char *p = arg;
1069 if (!*p) force_quotes = 1;
1071 if (isspace(*p) || *p == '*' || *p == '?' || *p == '{' || *p == '\'')
1075 else if (*p == '\\') {
1077 while (*p == '\\') {
1082 if (*p == '"' || !*p)
1089 if (!force_quotes && n == 0)
1092 /* insert \ where necessary */
1093 d = q = xmalloc(st_add3(len, n, 3));
1098 else if (*arg == '\\') {
1100 while (*arg == '\\') {
1104 if (*arg == '"' || !*arg) {
1107 /* don't escape the surrounding end quote */
1122 static const char *quote_arg_msys2(const char *arg)
1124 struct strbuf buf = STRBUF_INIT;
1125 const char *p2 = arg, *p;
1127 for (p = arg; *p; p++) {
1128 int ws = isspace(*p);
1129 if (!ws && *p != '\\' && *p != '"' && *p != '{' && *p != '\'' &&
1130 *p != '?' && *p != '*' && *p != '~')
1133 strbuf_addch(&buf, '"');
1135 strbuf_add(&buf, p2, p - p2);
1136 if (*p == '\\' || *p == '"')
1137 strbuf_addch(&buf, '\\');
1142 strbuf_addch(&buf, '"');
1146 strbuf_add(&buf, p2, p - p2);
1148 strbuf_addch(&buf, '"');
1149 return strbuf_detach(&buf, 0);
1152 static const char *parse_interpreter(const char *cmd)
1154 static char buf[100];
1158 /* don't even try a .exe */
1160 if (n >= 4 && !strcasecmp(cmd+n-4, ".exe"))
1163 fd = open(cmd, O_RDONLY);
1166 n = read(fd, buf, sizeof(buf)-1);
1168 if (n < 4) /* at least '#!/x' and not error */
1171 if (buf[0] != '#' || buf[1] != '!')
1174 p = buf + strcspn(buf, "\r\n");
1179 if (!(p = strrchr(buf+2, '/')) && !(p = strrchr(buf+2, '\\')))
1182 if ((opt = strchr(p+1, ' ')))
1188 * exe_only means that we only want to detect .exe files, but not scripts
1189 * (which do not have an extension)
1191 static char *lookup_prog(const char *dir, int dirlen, const char *cmd,
1192 int isexe, int exe_only)
1194 char path[MAX_PATH];
1195 wchar_t wpath[MAX_PATH];
1196 snprintf(path, sizeof(path), "%.*s\\%s.exe", dirlen, dir, cmd);
1198 if (xutftowcs_path(wpath, path) < 0)
1201 if (!isexe && _waccess(wpath, F_OK) == 0)
1202 return xstrdup(path);
1203 wpath[wcslen(wpath)-4] = '\0';
1204 if ((!exe_only || isexe) && _waccess(wpath, F_OK) == 0) {
1205 if (!(GetFileAttributesW(wpath) & FILE_ATTRIBUTE_DIRECTORY)) {
1206 path[strlen(path)-4] = '\0';
1207 return xstrdup(path);
1214 * Determines the absolute path of cmd using the split path in path.
1215 * If cmd contains a slash or backslash, no lookup is performed.
1217 static char *path_lookup(const char *cmd, int exe_only)
1221 int len = strlen(cmd);
1222 int isexe = len >= 4 && !strcasecmp(cmd+len-4, ".exe");
1224 if (strchr(cmd, '/') || strchr(cmd, '\\'))
1225 return xstrdup(cmd);
1227 path = mingw_getenv("PATH");
1232 const char *sep = strchrnul(path, ';');
1233 int dirlen = sep - path;
1235 prog = lookup_prog(path, dirlen, cmd, isexe, exe_only);
1244 static const wchar_t *wcschrnul(const wchar_t *s, wchar_t c)
1246 while (*s && *s != c)
1251 /* Compare only keys */
1252 static int wenvcmp(const void *a, const void *b)
1254 wchar_t *p = *(wchar_t **)a, *q = *(wchar_t **)b;
1255 size_t p_len, q_len;
1258 p_len = wcschrnul(p, L'=') - p;
1259 q_len = wcschrnul(q, L'=') - q;
1261 /* If the length differs, include the shorter key's NUL */
1264 else if (p_len > q_len)
1267 return _wcsnicmp(p, q, p_len);
1271 * Build an environment block combining the inherited environment
1272 * merged with the given list of settings.
1274 * Values of the form "KEY=VALUE" in deltaenv override inherited values.
1275 * Values of the form "KEY" in deltaenv delete inherited values.
1277 * Multiple entries in deltaenv for the same key are explicitly allowed.
1279 * We return a contiguous block of UNICODE strings with a final trailing
1282 static wchar_t *make_environment_block(char **deltaenv)
1284 wchar_t *wenv = GetEnvironmentStringsW(), *wdeltaenv, *result, *p;
1285 size_t wlen, s, delta_size, size;
1287 wchar_t **array = NULL;
1288 size_t alloc = 0, nr = 0, i;
1290 size = 1; /* for extra NUL at the end */
1292 /* If there is no deltaenv to apply, simply return a copy. */
1293 if (!deltaenv || !*deltaenv) {
1294 for (p = wenv; p && *p; ) {
1295 size_t s = wcslen(p) + 1;
1300 ALLOC_ARRAY(result, size);
1301 COPY_ARRAY(result, wenv, size);
1302 FreeEnvironmentStringsW(wenv);
1307 * If there is a deltaenv, let's accumulate all keys into `array`,
1308 * sort them using the stable git_stable_qsort() and then copy,
1309 * skipping duplicate keys
1311 for (p = wenv; p && *p; ) {
1312 ALLOC_GROW(array, nr + 1, alloc);
1319 /* (over-)assess size needed for wchar version of deltaenv */
1320 for (delta_size = 0, i = 0; deltaenv[i]; i++)
1321 delta_size += strlen(deltaenv[i]) * 2 + 1;
1322 ALLOC_ARRAY(wdeltaenv, delta_size);
1324 /* convert the deltaenv, appending to array */
1325 for (i = 0, p = wdeltaenv; deltaenv[i]; i++) {
1326 ALLOC_GROW(array, nr + 1, alloc);
1327 wlen = xutftowcs(p, deltaenv[i], wdeltaenv + delta_size - p);
1332 git_stable_qsort(array, nr, sizeof(*array), wenvcmp);
1333 ALLOC_ARRAY(result, size + delta_size);
1335 for (p = result, i = 0; i < nr; i++) {
1336 /* Skip any duplicate keys; last one wins */
1337 while (i + 1 < nr && !wenvcmp(array + i, array + i + 1))
1340 /* Skip "to delete" entry */
1341 if (!wcschr(array[i], L'='))
1344 size = wcslen(array[i]) + 1;
1345 COPY_ARRAY(p, array[i], size);
1352 FreeEnvironmentStringsW(wenv);
1356 static void do_unset_environment_variables(void)
1359 char *p = unset_environment_variables;
1366 char *comma = strchr(p, ',');
1378 struct pinfo_t *next;
1382 static struct pinfo_t *pinfo = NULL;
1383 CRITICAL_SECTION pinfo_cs;
1385 /* Used to match and chomp off path components */
1386 static inline int match_last_path_component(const char *path, size_t *len,
1387 const char *component)
1389 size_t component_len = strlen(component);
1390 if (*len < component_len + 1 ||
1391 !is_dir_sep(path[*len - component_len - 1]) ||
1392 fspathncmp(path + *len - component_len, component, component_len))
1394 *len -= component_len + 1;
1395 /* chomp off repeated dir separators */
1396 while (*len > 0 && is_dir_sep(path[*len - 1]))
1401 static int is_msys2_sh(const char *cmd)
1406 if (!strcmp(cmd, "sh")) {
1407 static int ret = -1;
1413 p = path_lookup(cmd, 0);
1417 size_t len = strlen(p);
1419 ret = match_last_path_component(p, &len, "sh.exe") &&
1420 match_last_path_component(p, &len, "bin") &&
1421 match_last_path_component(p, &len, "usr");
1427 if (ends_with(cmd, "\\sh.exe")) {
1431 sh = path_lookup("sh", 0);
1433 return !fspathcmp(cmd, sh);
1439 static pid_t mingw_spawnve_fd(const char *cmd, const char **argv, char **deltaenv,
1441 int prepend_cmd, int fhin, int fhout, int fherr)
1444 PROCESS_INFORMATION pi;
1446 wchar_t wcmd[MAX_PATH], wdir[MAX_PATH], *wargs, *wenvblk = NULL;
1447 unsigned flags = CREATE_UNICODE_ENVIRONMENT;
1450 const char *(*quote_arg)(const char *arg) =
1451 is_msys2_sh(cmd ? cmd : *argv) ?
1452 quote_arg_msys2 : quote_arg_msvc;
1454 do_unset_environment_variables();
1456 /* Determine whether or not we are associated to a console */
1457 cons = CreateFileW(L"CONOUT$", GENERIC_WRITE,
1458 FILE_SHARE_WRITE, NULL, OPEN_EXISTING,
1459 FILE_ATTRIBUTE_NORMAL, NULL);
1460 if (cons == INVALID_HANDLE_VALUE) {
1461 /* There is no console associated with this process.
1462 * Since the child is a console process, Windows
1463 * would normally create a console window. But
1464 * since we'll be redirecting std streams, we do
1465 * not need the console.
1466 * It is necessary to use DETACHED_PROCESS
1467 * instead of CREATE_NO_WINDOW to make ssh
1468 * recognize that it has no console.
1470 flags |= DETACHED_PROCESS;
1472 /* There is already a console. If we specified
1473 * DETACHED_PROCESS here, too, Windows would
1474 * disassociate the child from the console.
1475 * The same is true for CREATE_NO_WINDOW.
1480 memset(&si, 0, sizeof(si));
1482 si.dwFlags = STARTF_USESTDHANDLES;
1483 si.hStdInput = winansi_get_osfhandle(fhin);
1484 si.hStdOutput = winansi_get_osfhandle(fhout);
1485 si.hStdError = winansi_get_osfhandle(fherr);
1487 if (*argv && !strcmp(cmd, *argv))
1489 else if (xutftowcs_path(wcmd, cmd) < 0)
1491 if (dir && xutftowcs_path(wdir, dir) < 0)
1494 /* concatenate argv, quoting args as we go */
1495 strbuf_init(&args, 0);
1497 char *quoted = (char *)quote_arg(cmd);
1498 strbuf_addstr(&args, quoted);
1502 for (; *argv; argv++) {
1503 char *quoted = (char *)quote_arg(*argv);
1505 strbuf_addch(&args, ' ');
1506 strbuf_addstr(&args, quoted);
1507 if (quoted != *argv)
1511 ALLOC_ARRAY(wargs, st_add(st_mult(2, args.len), 1));
1512 xutftowcs(wargs, args.buf, 2 * args.len + 1);
1513 strbuf_release(&args);
1515 wenvblk = make_environment_block(deltaenv);
1517 memset(&pi, 0, sizeof(pi));
1518 ret = CreateProcessW(*wcmd ? wcmd : NULL, wargs, NULL, NULL, TRUE,
1519 flags, wenvblk, dir ? wdir : NULL, &si, &pi);
1528 CloseHandle(pi.hThread);
1531 * The process ID is the human-readable identifier of the process
1532 * that we want to present in log and error messages. The handle
1533 * is not useful for this purpose. But we cannot close it, either,
1534 * because it is not possible to turn a process ID into a process
1535 * handle after the process terminated.
1536 * Keep the handle in a list for waitpid.
1538 EnterCriticalSection(&pinfo_cs);
1540 struct pinfo_t *info = xmalloc(sizeof(struct pinfo_t));
1541 info->pid = pi.dwProcessId;
1542 info->proc = pi.hProcess;
1546 LeaveCriticalSection(&pinfo_cs);
1548 return (pid_t)pi.dwProcessId;
1551 static pid_t mingw_spawnv(const char *cmd, const char **argv, int prepend_cmd)
1553 return mingw_spawnve_fd(cmd, argv, NULL, NULL, prepend_cmd, 0, 1, 2);
1556 pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **deltaenv,
1558 int fhin, int fhout, int fherr)
1561 char *prog = path_lookup(cmd, 0);
1568 const char *interpr = parse_interpreter(prog);
1571 const char *argv0 = argv[0];
1572 char *iprog = path_lookup(interpr, 1);
1579 pid = mingw_spawnve_fd(iprog, argv, deltaenv, dir, 1,
1580 fhin, fhout, fherr);
1586 pid = mingw_spawnve_fd(prog, argv, deltaenv, dir, 0,
1587 fhin, fhout, fherr);
1593 static int try_shell_exec(const char *cmd, char *const *argv)
1595 const char *interpr = parse_interpreter(cmd);
1601 prog = path_lookup(interpr, 1);
1609 while (argv[argc]) argc++;
1610 ALLOC_ARRAY(argv2, argc + 1);
1611 argv2[0] = (char *)cmd; /* full path to the script file */
1612 memcpy(&argv2[1], &argv[1], sizeof(*argv) * argc);
1613 exec_id = trace2_exec(prog, argv2);
1614 pid = mingw_spawnv(prog, argv2, 1);
1617 if (waitpid(pid, &status, 0) < 0)
1619 trace2_exec_result(exec_id, status);
1622 trace2_exec_result(exec_id, -1);
1623 pid = 1; /* indicate that we tried but failed */
1630 int mingw_execv(const char *cmd, char *const *argv)
1632 /* check if git_command is a shell script */
1633 if (!try_shell_exec(cmd, argv)) {
1637 exec_id = trace2_exec(cmd, (const char **)argv);
1638 pid = mingw_spawnv(cmd, (const char **)argv, 0);
1640 trace2_exec_result(exec_id, -1);
1643 if (waitpid(pid, &status, 0) < 0)
1645 trace2_exec_result(exec_id, status);
1651 int mingw_execvp(const char *cmd, char *const *argv)
1653 char *prog = path_lookup(cmd, 0);
1656 mingw_execv(prog, argv);
1664 int mingw_kill(pid_t pid, int sig)
1666 if (pid > 0 && sig == SIGTERM) {
1667 HANDLE h = OpenProcess(PROCESS_TERMINATE, FALSE, pid);
1669 if (TerminateProcess(h, -1)) {
1674 errno = err_win_to_posix(GetLastError());
1677 } else if (pid > 0 && sig == 0) {
1678 HANDLE h = OpenProcess(PROCESS_QUERY_INFORMATION, FALSE, pid);
1690 * UTF-8 versions of getenv(), putenv() and unsetenv().
1691 * Internally, they use the CRT's stock UNICODE routines
1692 * to avoid data loss.
1694 char *mingw_getenv(const char *name)
1696 #define GETENV_MAX_RETAIN 64
1697 static char *values[GETENV_MAX_RETAIN];
1698 static int value_counter;
1699 int len_key, len_value;
1702 wchar_t w_value[32768];
1704 if (!name || !*name)
1707 len_key = strlen(name) + 1;
1708 /* We cannot use xcalloc() here because that uses getenv() itself */
1709 w_key = calloc(len_key, sizeof(wchar_t));
1711 die("Out of memory, (tried to allocate %u wchar_t's)", len_key);
1712 xutftowcs(w_key, name, len_key);
1713 /* GetEnvironmentVariableW() only sets the last error upon failure */
1714 SetLastError(ERROR_SUCCESS);
1715 len_value = GetEnvironmentVariableW(w_key, w_value, ARRAY_SIZE(w_value));
1716 if (!len_value && GetLastError() == ERROR_ENVVAR_NOT_FOUND) {
1722 len_value = len_value * 3 + 1;
1723 /* We cannot use xcalloc() here because that uses getenv() itself */
1724 value = calloc(len_value, sizeof(char));
1726 die("Out of memory, (tried to allocate %u bytes)", len_value);
1727 xwcstoutf(value, w_value, len_value);
1730 * We return `value` which is an allocated value and the caller is NOT
1731 * expecting to have to free it, so we keep a round-robin array,
1732 * invalidating the buffer after GETENV_MAX_RETAIN getenv() calls.
1734 free(values[value_counter]);
1735 values[value_counter++] = value;
1736 if (value_counter >= ARRAY_SIZE(values))
1742 int mingw_putenv(const char *namevalue)
1745 wchar_t *wide, *equal;
1748 if (!namevalue || !*namevalue)
1751 size = strlen(namevalue) * 2 + 1;
1752 wide = calloc(size, sizeof(wchar_t));
1754 die("Out of memory, (tried to allocate %u wchar_t's)", size);
1755 xutftowcs(wide, namevalue, size);
1756 equal = wcschr(wide, L'=');
1758 result = SetEnvironmentVariableW(wide, NULL);
1761 result = SetEnvironmentVariableW(wide, equal + 1);
1766 errno = err_win_to_posix(GetLastError());
1768 return result ? 0 : -1;
1771 static void ensure_socket_initialization(void)
1774 static int initialized = 0;
1779 if (WSAStartup(MAKEWORD(2,2), &wsa))
1780 die("unable to initialize winsock subsystem, error %d",
1783 atexit((void(*)(void)) WSACleanup);
1788 int mingw_gethostname(char *name, int namelen)
1790 ensure_socket_initialization();
1791 return gethostname(name, namelen);
1794 #undef gethostbyname
1795 struct hostent *mingw_gethostbyname(const char *host)
1797 ensure_socket_initialization();
1798 return gethostbyname(host);
1802 int mingw_getaddrinfo(const char *node, const char *service,
1803 const struct addrinfo *hints, struct addrinfo **res)
1805 ensure_socket_initialization();
1806 return getaddrinfo(node, service, hints, res);
1809 int mingw_socket(int domain, int type, int protocol)
1814 ensure_socket_initialization();
1815 s = WSASocket(domain, type, protocol, NULL, 0, 0);
1816 if (s == INVALID_SOCKET) {
1818 * WSAGetLastError() values are regular BSD error codes
1819 * biased by WSABASEERR.
1820 * However, strerror() does not know about networking
1821 * specific errors, which are values beginning at 38 or so.
1822 * Therefore, we choose to leave the biased error code
1823 * in errno so that _if_ someone looks up the code somewhere,
1824 * then it is at least the number that are usually listed.
1826 errno = WSAGetLastError();
1829 /* convert into a file descriptor */
1830 if ((sockfd = _open_osfhandle(s, O_RDWR|O_BINARY)) < 0) {
1832 return error("unable to make a socket file descriptor: %s",
1839 int mingw_connect(int sockfd, struct sockaddr *sa, size_t sz)
1841 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
1842 return connect(s, sa, sz);
1846 int mingw_bind(int sockfd, struct sockaddr *sa, size_t sz)
1848 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
1849 return bind(s, sa, sz);
1853 int mingw_setsockopt(int sockfd, int lvl, int optname, void *optval, int optlen)
1855 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
1856 return setsockopt(s, lvl, optname, (const char*)optval, optlen);
1860 int mingw_shutdown(int sockfd, int how)
1862 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
1863 return shutdown(s, how);
1867 int mingw_listen(int sockfd, int backlog)
1869 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
1870 return listen(s, backlog);
1874 int mingw_accept(int sockfd1, struct sockaddr *sa, socklen_t *sz)
1878 SOCKET s1 = (SOCKET)_get_osfhandle(sockfd1);
1879 SOCKET s2 = accept(s1, sa, sz);
1881 /* convert into a file descriptor */
1882 if ((sockfd2 = _open_osfhandle(s2, O_RDWR|O_BINARY)) < 0) {
1885 return error("unable to make a socket file descriptor: %s",
1892 int mingw_rename(const char *pold, const char *pnew)
1896 wchar_t wpold[MAX_PATH], wpnew[MAX_PATH];
1897 if (xutftowcs_path(wpold, pold) < 0 || xutftowcs_path(wpnew, pnew) < 0)
1901 * Try native rename() first to get errno right.
1902 * It is based on MoveFile(), which cannot overwrite existing files.
1904 if (!_wrename(wpold, wpnew))
1906 if (errno != EEXIST)
1909 if (MoveFileExW(wpold, wpnew, MOVEFILE_REPLACE_EXISTING))
1911 /* TODO: translate more errors */
1912 gle = GetLastError();
1913 if (gle == ERROR_ACCESS_DENIED &&
1914 (attrs = GetFileAttributesW(wpnew)) != INVALID_FILE_ATTRIBUTES) {
1915 if (attrs & FILE_ATTRIBUTE_DIRECTORY) {
1916 DWORD attrsold = GetFileAttributesW(wpold);
1917 if (attrsold == INVALID_FILE_ATTRIBUTES ||
1918 !(attrsold & FILE_ATTRIBUTE_DIRECTORY))
1920 else if (!_wrmdir(wpnew))
1924 if ((attrs & FILE_ATTRIBUTE_READONLY) &&
1925 SetFileAttributesW(wpnew, attrs & ~FILE_ATTRIBUTE_READONLY)) {
1926 if (MoveFileExW(wpold, wpnew, MOVEFILE_REPLACE_EXISTING))
1928 gle = GetLastError();
1929 /* revert file attributes on failure */
1930 SetFileAttributesW(wpnew, attrs);
1933 if (tries < ARRAY_SIZE(delay) && gle == ERROR_ACCESS_DENIED) {
1935 * We assume that some other process had the source or
1936 * destination file open at the wrong moment and retry.
1937 * In order to give the other process a higher chance to
1938 * complete its operation, we give up our time slice now.
1939 * If we have to retry again, we do sleep a bit.
1941 Sleep(delay[tries]);
1945 if (gle == ERROR_ACCESS_DENIED &&
1946 ask_yes_no_if_possible("Rename from '%s' to '%s' failed. "
1947 "Should I try again?", pold, pnew))
1955 * Note that this doesn't return the actual pagesize, but
1956 * the allocation granularity. If future Windows specific git code
1957 * needs the real getpagesize function, we need to find another solution.
1959 int mingw_getpagesize(void)
1963 return si.dwAllocationGranularity;
1966 /* See https://msdn.microsoft.com/en-us/library/windows/desktop/ms724435.aspx */
1967 enum EXTENDED_NAME_FORMAT {
1969 NameUserPrincipal = 8
1972 static char *get_extended_user_info(enum EXTENDED_NAME_FORMAT type)
1974 DECLARE_PROC_ADDR(secur32.dll, BOOL, GetUserNameExW,
1975 enum EXTENDED_NAME_FORMAT, LPCWSTR, PULONG);
1976 static wchar_t wbuffer[1024];
1979 if (!INIT_PROC_ADDR(GetUserNameExW))
1982 len = ARRAY_SIZE(wbuffer);
1983 if (GetUserNameExW(type, wbuffer, &len)) {
1984 char *converted = xmalloc((len *= 3));
1985 if (xwcstoutf(converted, wbuffer, len) >= 0)
1993 char *mingw_query_user_email(void)
1995 return get_extended_user_info(NameUserPrincipal);
1998 struct passwd *getpwuid(int uid)
2000 static unsigned initialized;
2001 static char user_name[100];
2002 static struct passwd *p;
2009 len = ARRAY_SIZE(buf);
2010 if (!GetUserNameW(buf, &len)) {
2015 if (xwcstoutf(user_name, buf, sizeof(user_name)) < 0) {
2020 p = xmalloc(sizeof(*p));
2021 p->pw_name = user_name;
2022 p->pw_gecos = get_extended_user_info(NameDisplay);
2024 p->pw_gecos = "unknown";
2031 static HANDLE timer_event;
2032 static HANDLE timer_thread;
2033 static int timer_interval;
2034 static int one_shot;
2035 static sig_handler_t timer_fn = SIG_DFL, sigint_fn = SIG_DFL;
2037 /* The timer works like this:
2038 * The thread, ticktack(), is a trivial routine that most of the time
2039 * only waits to receive the signal to terminate. The main thread tells
2040 * the thread to terminate by setting the timer_event to the signalled
2042 * But ticktack() interrupts the wait state after the timer's interval
2043 * length to call the signal handler.
2046 static unsigned __stdcall ticktack(void *dummy)
2048 while (WaitForSingleObject(timer_event, timer_interval) == WAIT_TIMEOUT) {
2049 mingw_raise(SIGALRM);
2056 static int start_timer_thread(void)
2058 timer_event = CreateEvent(NULL, FALSE, FALSE, NULL);
2060 timer_thread = (HANDLE) _beginthreadex(NULL, 0, ticktack, NULL, 0, NULL);
2062 return errno = ENOMEM,
2063 error("cannot start timer thread");
2065 return errno = ENOMEM,
2066 error("cannot allocate resources for timer");
2070 static void stop_timer_thread(void)
2073 SetEvent(timer_event); /* tell thread to terminate */
2075 int rc = WaitForSingleObject(timer_thread, 10000);
2076 if (rc == WAIT_TIMEOUT)
2077 error("timer thread did not terminate timely");
2078 else if (rc != WAIT_OBJECT_0)
2079 error("waiting for timer thread failed: %lu",
2081 CloseHandle(timer_thread);
2084 CloseHandle(timer_event);
2086 timer_thread = NULL;
2089 static inline int is_timeval_eq(const struct timeval *i1, const struct timeval *i2)
2091 return i1->tv_sec == i2->tv_sec && i1->tv_usec == i2->tv_usec;
2094 int setitimer(int type, struct itimerval *in, struct itimerval *out)
2096 static const struct timeval zero;
2097 static int atexit_done;
2100 return errno = EINVAL,
2101 error("setitimer param 3 != NULL not implemented");
2102 if (!is_timeval_eq(&in->it_interval, &zero) &&
2103 !is_timeval_eq(&in->it_interval, &in->it_value))
2104 return errno = EINVAL,
2105 error("setitimer: it_interval must be zero or eq it_value");
2108 stop_timer_thread();
2110 if (is_timeval_eq(&in->it_value, &zero) &&
2111 is_timeval_eq(&in->it_interval, &zero))
2114 timer_interval = in->it_value.tv_sec * 1000 + in->it_value.tv_usec / 1000;
2115 one_shot = is_timeval_eq(&in->it_interval, &zero);
2117 atexit(stop_timer_thread);
2120 return start_timer_thread();
2123 int sigaction(int sig, struct sigaction *in, struct sigaction *out)
2126 return errno = EINVAL,
2127 error("sigaction only implemented for SIGALRM");
2129 return errno = EINVAL,
2130 error("sigaction: param 3 != NULL not implemented");
2132 timer_fn = in->sa_handler;
2137 sig_handler_t mingw_signal(int sig, sig_handler_t handler)
2149 sigint_fn = handler;
2153 return signal(sig, handler);
2160 int mingw_raise(int sig)
2164 if (timer_fn == SIG_DFL) {
2165 if (isatty(STDERR_FILENO))
2166 fputs("Alarm clock\n", stderr);
2167 exit(128 + SIGALRM);
2168 } else if (timer_fn != SIG_IGN)
2173 if (sigint_fn == SIG_DFL)
2175 else if (sigint_fn != SIG_IGN)
2179 #if defined(_MSC_VER)
2186 case SIGABRT_COMPAT:
2188 * The <signal.h> header in the MS C Runtime defines 8 signals
2189 * as being supported on the platform. Anything else causes an
2190 * "Invalid signal or error" (which in DEBUG builds causes the
2191 * Abort/Retry/Ignore dialog). We by-pass the CRT for things we
2192 * already know will fail.
2209 int link(const char *oldpath, const char *newpath)
2211 wchar_t woldpath[MAX_PATH], wnewpath[MAX_PATH];
2212 if (xutftowcs_path(woldpath, oldpath) < 0 ||
2213 xutftowcs_path(wnewpath, newpath) < 0)
2216 if (!CreateHardLinkW(wnewpath, woldpath, NULL)) {
2217 errno = err_win_to_posix(GetLastError());
2223 pid_t waitpid(pid_t pid, int *status, int options)
2225 HANDLE h = OpenProcess(SYNCHRONIZE | PROCESS_QUERY_INFORMATION,
2232 if (pid > 0 && options & WNOHANG) {
2233 if (WAIT_OBJECT_0 != WaitForSingleObject(h, 0)) {
2237 options &= ~WNOHANG;
2241 struct pinfo_t **ppinfo;
2242 if (WaitForSingleObject(h, INFINITE) != WAIT_OBJECT_0) {
2248 GetExitCodeProcess(h, (LPDWORD)status);
2250 EnterCriticalSection(&pinfo_cs);
2254 struct pinfo_t *info = *ppinfo;
2255 if (info->pid == pid) {
2256 CloseHandle(info->proc);
2257 *ppinfo = info->next;
2261 ppinfo = &info->next;
2264 LeaveCriticalSection(&pinfo_cs);
2275 int xutftowcsn(wchar_t *wcs, const char *utfs, size_t wcslen, int utflen)
2277 int upos = 0, wpos = 0;
2278 const unsigned char *utf = (const unsigned char*) utfs;
2279 if (!utf || !wcs || wcslen < 1) {
2283 /* reserve space for \0 */
2288 while (upos < utflen) {
2289 int c = utf[upos++] & 0xff;
2290 if (utflen == INT_MAX && c == 0)
2293 if (wpos >= wcslen) {
2302 } else if (c >= 0xc2 && c < 0xe0 && upos < utflen &&
2303 (utf[upos] & 0xc0) == 0x80) {
2305 c = ((c & 0x1f) << 6);
2306 c |= (utf[upos++] & 0x3f);
2308 } else if (c >= 0xe0 && c < 0xf0 && upos + 1 < utflen &&
2309 !(c == 0xe0 && utf[upos] < 0xa0) && /* over-long encoding */
2310 (utf[upos] & 0xc0) == 0x80 &&
2311 (utf[upos + 1] & 0xc0) == 0x80) {
2313 c = ((c & 0x0f) << 12);
2314 c |= ((utf[upos++] & 0x3f) << 6);
2315 c |= (utf[upos++] & 0x3f);
2317 } else if (c >= 0xf0 && c < 0xf5 && upos + 2 < utflen &&
2318 wpos + 1 < wcslen &&
2319 !(c == 0xf0 && utf[upos] < 0x90) && /* over-long encoding */
2320 !(c == 0xf4 && utf[upos] >= 0x90) && /* > \u10ffff */
2321 (utf[upos] & 0xc0) == 0x80 &&
2322 (utf[upos + 1] & 0xc0) == 0x80 &&
2323 (utf[upos + 2] & 0xc0) == 0x80) {
2324 /* 4-byte utf-8: convert to \ud8xx \udcxx surrogate pair */
2325 c = ((c & 0x07) << 18);
2326 c |= ((utf[upos++] & 0x3f) << 12);
2327 c |= ((utf[upos++] & 0x3f) << 6);
2328 c |= (utf[upos++] & 0x3f);
2330 wcs[wpos++] = 0xd800 | (c >> 10);
2331 wcs[wpos++] = 0xdc00 | (c & 0x3ff);
2332 } else if (c >= 0xa0) {
2333 /* invalid utf-8 byte, printable unicode char: convert 1:1 */
2336 /* invalid utf-8 byte, non-printable unicode: convert to hex */
2337 static const char *hex = "0123456789abcdef";
2338 wcs[wpos++] = hex[c >> 4];
2340 wcs[wpos++] = hex[c & 0x0f];
2347 int xwcstoutf(char *utf, const wchar_t *wcs, size_t utflen)
2349 if (!wcs || !utf || utflen < 1) {
2353 utflen = WideCharToMultiByte(CP_UTF8, 0, wcs, -1, utf, utflen, NULL, NULL);
2360 static void setup_windows_environment(void)
2362 char *tmp = getenv("TMPDIR");
2364 /* on Windows it is TMP and TEMP */
2366 if (!(tmp = getenv("TMP")))
2367 tmp = getenv("TEMP");
2369 setenv("TMPDIR", tmp, 1);
2370 tmp = getenv("TMPDIR");
2376 * Convert all dir separators to forward slashes,
2377 * to help shell commands called from the Git
2378 * executable (by not mistaking the dir separators
2379 * for escape characters).
2381 convert_slashes(tmp);
2384 /* simulate TERM to enable auto-color (see color.c) */
2385 if (!getenv("TERM"))
2386 setenv("TERM", "cygwin", 1);
2388 /* calculate HOME if not set */
2389 if (!getenv("HOME")) {
2391 * try $HOMEDRIVE$HOMEPATH - the home share may be a network
2392 * location, thus also check if the path exists (i.e. is not
2395 if ((tmp = getenv("HOMEDRIVE"))) {
2396 struct strbuf buf = STRBUF_INIT;
2397 strbuf_addstr(&buf, tmp);
2398 if ((tmp = getenv("HOMEPATH"))) {
2399 strbuf_addstr(&buf, tmp);
2400 if (is_directory(buf.buf))
2401 setenv("HOME", buf.buf, 1);
2403 tmp = NULL; /* use $USERPROFILE */
2405 strbuf_release(&buf);
2407 /* use $USERPROFILE if the home share is not available */
2408 if (!tmp && (tmp = getenv("USERPROFILE")))
2409 setenv("HOME", tmp, 1);
2413 int is_valid_win32_path(const char *path, int allow_literal_nul)
2415 const char *p = path;
2416 int preceding_space_or_period = 0, i = 0, periods = 0;
2421 skip_dos_drive_prefix((char **)&path);
2428 case '/': case '\\':
2429 /* cannot end in ` ` or `.`, except for `.` and `..` */
2430 if (preceding_space_or_period &&
2431 (i != periods || periods > 2))
2436 i = periods = preceding_space_or_period = 0;
2440 case 'a': case 'A': /* AUX */
2441 if (((c = path[++i]) != 'u' && c != 'U') ||
2442 ((c = path[++i]) != 'x' && c != 'X')) {
2443 not_a_reserved_name:
2448 case 'c': case 'C': /* COM<N>, CON, CONIN$, CONOUT$ */
2449 if ((c = path[++i]) != 'o' && c != 'O')
2450 goto not_a_reserved_name;
2452 if (c == 'm' || c == 'M') { /* COM<N> */
2453 if (!isdigit(path[++i]))
2454 goto not_a_reserved_name;
2455 } else if (c == 'n' || c == 'N') { /* CON */
2457 if ((c == 'i' || c == 'I') &&
2458 ((c = path[i + 2]) == 'n' ||
2461 i += 3; /* CONIN$ */
2462 else if ((c == 'o' || c == 'O') &&
2463 ((c = path[i + 2]) == 'u' ||
2465 ((c = path[i + 3]) == 't' ||
2468 i += 4; /* CONOUT$ */
2470 goto not_a_reserved_name;
2472 case 'l': case 'L': /* LPT<N> */
2473 if (((c = path[++i]) != 'p' && c != 'P') ||
2474 ((c = path[++i]) != 't' && c != 'T') ||
2475 !isdigit(path[++i]))
2476 goto not_a_reserved_name;
2478 case 'n': case 'N': /* NUL */
2479 if (((c = path[++i]) != 'u' && c != 'U') ||
2480 ((c = path[++i]) != 'l' && c != 'L') ||
2481 (allow_literal_nul &&
2482 !path[i + 1] && p == path))
2483 goto not_a_reserved_name;
2485 case 'p': case 'P': /* PRN */
2486 if (((c = path[++i]) != 'r' && c != 'R') ||
2487 ((c = path[++i]) != 'n' && c != 'N'))
2488 goto not_a_reserved_name;
2495 * So far, this looks like a reserved name. Let's see
2496 * whether it actually is one: trailing spaces, a file
2497 * extension, or an NTFS Alternate Data Stream do not
2498 * matter, the name is still reserved if any of those
2499 * follow immediately after the actual name.
2502 if (path[i] == ' ') {
2503 preceding_space_or_period = 1;
2504 while (path[++i] == ' ')
2505 ; /* skip all spaces */
2509 if (c && c != '.' && c != ':' && c != '/' && c != '\\')
2510 goto not_a_reserved_name;
2512 /* contains reserved name */
2518 preceding_space_or_period = 1;
2521 case ':': /* DOS drive prefix was already skipped */
2522 case '<': case '>': case '"': case '|': case '?': case '*':
2523 /* illegal character */
2526 if (c > '\0' && c < '\x20')
2527 /* illegal character */
2530 preceding_space_or_period = 0;
2535 #if !defined(_MSC_VER)
2537 * Disable MSVCRT command line wildcard expansion (__getmainargs called from
2538 * mingw startup code, see init.c in mingw runtime).
2543 static NORETURN void die_startup(void)
2545 fputs("fatal: not enough memory for initialization", stderr);
2549 static void *malloc_startup(size_t size)
2551 void *result = malloc(size);
2557 static char *wcstoutfdup_startup(char *buffer, const wchar_t *wcs, size_t len)
2559 len = xwcstoutf(buffer, wcs, len) + 1;
2560 return memcpy(malloc_startup(len), buffer, len);
2563 static void maybe_redirect_std_handle(const wchar_t *key, DWORD std_id, int fd,
2564 DWORD desired_access, DWORD flags)
2566 DWORD create_flag = fd ? OPEN_ALWAYS : OPEN_EXISTING;
2567 wchar_t buf[MAX_PATH];
2568 DWORD max = ARRAY_SIZE(buf);
2570 DWORD ret = GetEnvironmentVariableW(key, buf, max);
2572 if (!ret || ret >= max)
2575 /* make sure this does not leak into child processes */
2576 SetEnvironmentVariableW(key, NULL);
2577 if (!wcscmp(buf, L"off")) {
2579 handle = GetStdHandle(std_id);
2580 if (handle != INVALID_HANDLE_VALUE)
2581 CloseHandle(handle);
2584 if (std_id == STD_ERROR_HANDLE && !wcscmp(buf, L"2>&1")) {
2585 handle = GetStdHandle(STD_OUTPUT_HANDLE);
2586 if (handle == INVALID_HANDLE_VALUE) {
2588 handle = GetStdHandle(std_id);
2589 if (handle != INVALID_HANDLE_VALUE)
2590 CloseHandle(handle);
2592 int new_fd = _open_osfhandle((intptr_t)handle, O_BINARY);
2593 SetStdHandle(std_id, handle);
2595 /* do *not* close the new_fd: that would close stdout */
2599 handle = CreateFileW(buf, desired_access, 0, NULL, create_flag,
2601 if (handle != INVALID_HANDLE_VALUE) {
2602 int new_fd = _open_osfhandle((intptr_t)handle, O_BINARY);
2603 SetStdHandle(std_id, handle);
2609 static void maybe_redirect_std_handles(void)
2611 maybe_redirect_std_handle(L"GIT_REDIRECT_STDIN", STD_INPUT_HANDLE, 0,
2612 GENERIC_READ, FILE_ATTRIBUTE_NORMAL);
2613 maybe_redirect_std_handle(L"GIT_REDIRECT_STDOUT", STD_OUTPUT_HANDLE, 1,
2614 GENERIC_WRITE, FILE_ATTRIBUTE_NORMAL);
2615 maybe_redirect_std_handle(L"GIT_REDIRECT_STDERR", STD_ERROR_HANDLE, 2,
2616 GENERIC_WRITE, FILE_FLAG_NO_BUFFERING);
2626 * We implement wmain() and compile with -municode, which would
2627 * normally ignore main(), but we call the latter from the former
2628 * so that we can handle non-ASCII command-line parameters
2631 * To be more compatible with the core git code, we convert
2632 * argv into UTF8 and pass them directly to main().
2634 int wmain(int argc, const wchar_t **wargv)
2636 int i, maxlen, exit_status;
2637 char *buffer, **save;
2640 trace2_initialize_clock();
2644 _CrtSetReportMode(_CRT_ASSERT, _CRTDBG_MODE_DEBUG);
2647 #ifdef USE_MSVC_CRTDBG
2648 _CrtSetDbgFlag(_CRTDBG_ALLOC_MEM_DF | _CRTDBG_LEAK_CHECK_DF);
2652 maybe_redirect_std_handles();
2654 /* determine size of argv and environ conversion buffer */
2655 maxlen = wcslen(wargv[0]);
2656 for (i = 1; i < argc; i++)
2657 maxlen = max(maxlen, wcslen(wargv[i]));
2659 /* allocate buffer (wchar_t encodes to max 3 UTF-8 bytes) */
2660 maxlen = 3 * maxlen + 1;
2661 buffer = malloc_startup(maxlen);
2664 * Create a UTF-8 version of w_argv. Also create a "save" copy
2665 * to remember all the string pointers because parse_options()
2666 * will remove claimed items from the argv that we pass down.
2668 ALLOC_ARRAY(argv, argc + 1);
2669 ALLOC_ARRAY(save, argc + 1);
2670 for (i = 0; i < argc; i++)
2671 argv[i] = save[i] = wcstoutfdup_startup(buffer, wargv[i], maxlen);
2672 argv[i] = save[i] = NULL;
2675 /* fix Windows specific environment settings */
2676 setup_windows_environment();
2678 unset_environment_variables = xstrdup("PERL5LIB");
2680 /* initialize critical section for waitpid pinfo_t list */
2681 InitializeCriticalSection(&pinfo_cs);
2683 /* set up default file mode and file modes for stdin/out/err */
2685 _setmode(_fileno(stdin), _O_BINARY);
2686 _setmode(_fileno(stdout), _O_BINARY);
2687 _setmode(_fileno(stderr), _O_BINARY);
2689 /* initialize Unicode console */
2692 /* invoke the real main() using our utf8 version of argv. */
2693 exit_status = main(argc, argv);
2695 for (i = 0; i < argc; i++)
2703 int uname(struct utsname *buf)
2705 unsigned v = (unsigned)GetVersion();
2706 memset(buf, 0, sizeof(*buf));
2707 xsnprintf(buf->sysname, sizeof(buf->sysname), "Windows");
2708 xsnprintf(buf->release, sizeof(buf->release),
2709 "%u.%u", v & 0xff, (v >> 8) & 0xff);
2710 /* assuming NT variants only.. */
2711 xsnprintf(buf->version, sizeof(buf->version),
2712 "%u", (v >> 16) & 0x7fff);