1 #include "../git-compat-util.h"
5 #include "../run-command.h"
7 static const int delay[] = { 0, 1, 10, 20, 40 };
9 int err_win_to_posix(DWORD winerr)
13 case ERROR_ACCESS_DENIED: error = EACCES; break;
14 case ERROR_ACCOUNT_DISABLED: error = EACCES; break;
15 case ERROR_ACCOUNT_RESTRICTION: error = EACCES; break;
16 case ERROR_ALREADY_ASSIGNED: error = EBUSY; break;
17 case ERROR_ALREADY_EXISTS: error = EEXIST; break;
18 case ERROR_ARITHMETIC_OVERFLOW: error = ERANGE; break;
19 case ERROR_BAD_COMMAND: error = EIO; break;
20 case ERROR_BAD_DEVICE: error = ENODEV; break;
21 case ERROR_BAD_DRIVER_LEVEL: error = ENXIO; break;
22 case ERROR_BAD_EXE_FORMAT: error = ENOEXEC; break;
23 case ERROR_BAD_FORMAT: error = ENOEXEC; break;
24 case ERROR_BAD_LENGTH: error = EINVAL; break;
25 case ERROR_BAD_PATHNAME: error = ENOENT; break;
26 case ERROR_BAD_PIPE: error = EPIPE; break;
27 case ERROR_BAD_UNIT: error = ENODEV; break;
28 case ERROR_BAD_USERNAME: error = EINVAL; break;
29 case ERROR_BROKEN_PIPE: error = EPIPE; break;
30 case ERROR_BUFFER_OVERFLOW: error = ENAMETOOLONG; break;
31 case ERROR_BUSY: error = EBUSY; break;
32 case ERROR_BUSY_DRIVE: error = EBUSY; break;
33 case ERROR_CALL_NOT_IMPLEMENTED: error = ENOSYS; break;
34 case ERROR_CANNOT_MAKE: error = EACCES; break;
35 case ERROR_CANTOPEN: error = EIO; break;
36 case ERROR_CANTREAD: error = EIO; break;
37 case ERROR_CANTWRITE: error = EIO; break;
38 case ERROR_CRC: error = EIO; break;
39 case ERROR_CURRENT_DIRECTORY: error = EACCES; break;
40 case ERROR_DEVICE_IN_USE: error = EBUSY; break;
41 case ERROR_DEV_NOT_EXIST: error = ENODEV; break;
42 case ERROR_DIRECTORY: error = EINVAL; break;
43 case ERROR_DIR_NOT_EMPTY: error = ENOTEMPTY; break;
44 case ERROR_DISK_CHANGE: error = EIO; break;
45 case ERROR_DISK_FULL: error = ENOSPC; break;
46 case ERROR_DRIVE_LOCKED: error = EBUSY; break;
47 case ERROR_ENVVAR_NOT_FOUND: error = EINVAL; break;
48 case ERROR_EXE_MARKED_INVALID: error = ENOEXEC; break;
49 case ERROR_FILENAME_EXCED_RANGE: error = ENAMETOOLONG; break;
50 case ERROR_FILE_EXISTS: error = EEXIST; break;
51 case ERROR_FILE_INVALID: error = ENODEV; break;
52 case ERROR_FILE_NOT_FOUND: error = ENOENT; break;
53 case ERROR_GEN_FAILURE: error = EIO; break;
54 case ERROR_HANDLE_DISK_FULL: error = ENOSPC; break;
55 case ERROR_INSUFFICIENT_BUFFER: error = ENOMEM; break;
56 case ERROR_INVALID_ACCESS: error = EACCES; break;
57 case ERROR_INVALID_ADDRESS: error = EFAULT; break;
58 case ERROR_INVALID_BLOCK: error = EFAULT; break;
59 case ERROR_INVALID_DATA: error = EINVAL; break;
60 case ERROR_INVALID_DRIVE: error = ENODEV; break;
61 case ERROR_INVALID_EXE_SIGNATURE: error = ENOEXEC; break;
62 case ERROR_INVALID_FLAGS: error = EINVAL; break;
63 case ERROR_INVALID_FUNCTION: error = ENOSYS; break;
64 case ERROR_INVALID_HANDLE: error = EBADF; break;
65 case ERROR_INVALID_LOGON_HOURS: error = EACCES; break;
66 case ERROR_INVALID_NAME: error = EINVAL; break;
67 case ERROR_INVALID_OWNER: error = EINVAL; break;
68 case ERROR_INVALID_PARAMETER: error = EINVAL; break;
69 case ERROR_INVALID_PASSWORD: error = EPERM; break;
70 case ERROR_INVALID_PRIMARY_GROUP: error = EINVAL; break;
71 case ERROR_INVALID_SIGNAL_NUMBER: error = EINVAL; break;
72 case ERROR_INVALID_TARGET_HANDLE: error = EIO; break;
73 case ERROR_INVALID_WORKSTATION: error = EACCES; break;
74 case ERROR_IO_DEVICE: error = EIO; break;
75 case ERROR_IO_INCOMPLETE: error = EINTR; break;
76 case ERROR_LOCKED: error = EBUSY; break;
77 case ERROR_LOCK_VIOLATION: error = EACCES; break;
78 case ERROR_LOGON_FAILURE: error = EACCES; break;
79 case ERROR_MAPPED_ALIGNMENT: error = EINVAL; break;
80 case ERROR_META_EXPANSION_TOO_LONG: error = E2BIG; break;
81 case ERROR_MORE_DATA: error = EPIPE; break;
82 case ERROR_NEGATIVE_SEEK: error = ESPIPE; break;
83 case ERROR_NOACCESS: error = EFAULT; break;
84 case ERROR_NONE_MAPPED: error = EINVAL; break;
85 case ERROR_NOT_ENOUGH_MEMORY: error = ENOMEM; break;
86 case ERROR_NOT_READY: error = EAGAIN; break;
87 case ERROR_NOT_SAME_DEVICE: error = EXDEV; break;
88 case ERROR_NO_DATA: error = EPIPE; break;
89 case ERROR_NO_MORE_SEARCH_HANDLES: error = EIO; break;
90 case ERROR_NO_PROC_SLOTS: error = EAGAIN; break;
91 case ERROR_NO_SUCH_PRIVILEGE: error = EACCES; break;
92 case ERROR_OPEN_FAILED: error = EIO; break;
93 case ERROR_OPEN_FILES: error = EBUSY; break;
94 case ERROR_OPERATION_ABORTED: error = EINTR; break;
95 case ERROR_OUTOFMEMORY: error = ENOMEM; break;
96 case ERROR_PASSWORD_EXPIRED: error = EACCES; break;
97 case ERROR_PATH_BUSY: error = EBUSY; break;
98 case ERROR_PATH_NOT_FOUND: error = ENOENT; break;
99 case ERROR_PIPE_BUSY: error = EBUSY; break;
100 case ERROR_PIPE_CONNECTED: error = EPIPE; break;
101 case ERROR_PIPE_LISTENING: error = EPIPE; break;
102 case ERROR_PIPE_NOT_CONNECTED: error = EPIPE; break;
103 case ERROR_PRIVILEGE_NOT_HELD: error = EACCES; break;
104 case ERROR_READ_FAULT: error = EIO; break;
105 case ERROR_SEEK: error = EIO; break;
106 case ERROR_SEEK_ON_DEVICE: error = ESPIPE; break;
107 case ERROR_SHARING_BUFFER_EXCEEDED: error = ENFILE; break;
108 case ERROR_SHARING_VIOLATION: error = EACCES; break;
109 case ERROR_STACK_OVERFLOW: error = ENOMEM; break;
110 case ERROR_SWAPERROR: error = ENOENT; break;
111 case ERROR_TOO_MANY_MODULES: error = EMFILE; break;
112 case ERROR_TOO_MANY_OPEN_FILES: error = EMFILE; break;
113 case ERROR_UNRECOGNIZED_MEDIA: error = ENXIO; break;
114 case ERROR_UNRECOGNIZED_VOLUME: error = ENODEV; break;
115 case ERROR_WAIT_NO_CHILDREN: error = ECHILD; break;
116 case ERROR_WRITE_FAULT: error = EIO; break;
117 case ERROR_WRITE_PROTECT: error = EROFS; break;
122 static inline int is_file_in_use_error(DWORD errcode)
125 case ERROR_SHARING_VIOLATION:
126 case ERROR_ACCESS_DENIED:
133 static int read_yes_no_answer(void)
137 if (fgets(answer, sizeof(answer), stdin)) {
138 size_t answer_len = strlen(answer);
139 int got_full_line = 0, c;
141 /* remove the newline */
142 if (answer_len >= 2 && answer[answer_len-2] == '\r') {
143 answer[answer_len-2] = '\0';
145 } else if (answer_len >= 1 && answer[answer_len-1] == '\n') {
146 answer[answer_len-1] = '\0';
149 /* flush the buffer in case we did not get the full line */
151 while ((c = getchar()) != EOF && c != '\n')
154 /* we could not read, return the
155 * default answer which is no */
158 if (tolower(answer[0]) == 'y' && !answer[1])
160 if (!strncasecmp(answer, "yes", sizeof(answer)))
162 if (tolower(answer[0]) == 'n' && !answer[1])
164 if (!strncasecmp(answer, "no", sizeof(answer)))
167 /* did not find an answer we understand */
171 static int ask_yes_no_if_possible(const char *format, ...)
174 const char *retry_hook[] = { NULL, NULL, NULL };
177 va_start(args, format);
178 vsnprintf(question, sizeof(question), format, args);
181 if ((retry_hook[0] = mingw_getenv("GIT_ASK_YESNO"))) {
182 retry_hook[1] = question;
183 return !run_command_v_opt(retry_hook, 0);
186 if (!isatty(_fileno(stdin)) || !isatty(_fileno(stderr)))
191 fprintf(stderr, "%s (y/n) ", question);
193 if ((answer = read_yes_no_answer()) >= 0)
196 fprintf(stderr, "Sorry, I did not understand your answer. "
197 "Please type 'y' or 'n'\n");
202 int mingw_unlink(const char *pathname)
206 /* read-only files cannot be removed */
207 chmod(pathname, 0666);
208 while ((ret = unlink(pathname)) == -1 && tries < ARRAY_SIZE(delay)) {
209 if (!is_file_in_use_error(GetLastError()))
212 * We assume that some other process had the source or
213 * destination file open at the wrong moment and retry.
214 * In order to give the other process a higher chance to
215 * complete its operation, we give up our time slice now.
216 * If we have to retry again, we do sleep a bit.
221 while (ret == -1 && is_file_in_use_error(GetLastError()) &&
222 ask_yes_no_if_possible("Unlink of file '%s' failed. "
223 "Should I try again?", pathname))
224 ret = unlink(pathname);
228 static int is_dir_empty(const char *path)
230 struct strbuf buf = STRBUF_INIT;
231 WIN32_FIND_DATAA findbuf;
234 strbuf_addf(&buf, "%s\\*", path);
235 handle = FindFirstFileA(buf.buf, &findbuf);
236 if (handle == INVALID_HANDLE_VALUE) {
237 strbuf_release(&buf);
238 return GetLastError() == ERROR_NO_MORE_FILES;
241 while (!strcmp(findbuf.cFileName, ".") ||
242 !strcmp(findbuf.cFileName, ".."))
243 if (!FindNextFile(handle, &findbuf)) {
244 strbuf_release(&buf);
245 return GetLastError() == ERROR_NO_MORE_FILES;
248 strbuf_release(&buf);
253 int mingw_rmdir(const char *pathname)
257 while ((ret = rmdir(pathname)) == -1 && tries < ARRAY_SIZE(delay)) {
258 if (!is_file_in_use_error(GetLastError()))
260 if (!is_dir_empty(pathname)) {
265 * We assume that some other process had the source or
266 * destination file open at the wrong moment and retry.
267 * In order to give the other process a higher chance to
268 * complete its operation, we give up our time slice now.
269 * If we have to retry again, we do sleep a bit.
274 while (ret == -1 && is_file_in_use_error(GetLastError()) &&
275 ask_yes_no_if_possible("Deletion of directory '%s' failed. "
276 "Should I try again?", pathname))
277 ret = rmdir(pathname);
282 int mingw_open (const char *filename, int oflags, ...)
288 va_start(args, oflags);
289 mode = va_arg(args, int);
292 if (filename && !strcmp(filename, "/dev/null"))
295 fd = open(filename, oflags, mode);
297 if (fd < 0 && (oflags & O_CREAT) && errno == EACCES) {
298 DWORD attrs = GetFileAttributes(filename);
299 if (attrs != INVALID_FILE_ATTRIBUTES && (attrs & FILE_ATTRIBUTE_DIRECTORY))
306 ssize_t mingw_write(int fd, const void *buf, size_t count)
309 * While write() calls to a file on a local disk are translated
310 * into WriteFile() calls with a maximum size of 64KB on Windows
311 * XP and 256KB on Vista, no such cap is placed on writes to
312 * files over the network on Windows XP. Unfortunately, there
313 * seems to be a limit of 32MB-28KB on X64 and 64MB-32KB on x86;
314 * bigger writes fail on Windows XP.
315 * So we cap to a nice 31MB here to avoid write failures over
316 * the net without changing the number of WriteFile() calls in
319 return write(fd, buf, min(count, 31 * 1024 * 1024));
323 FILE *mingw_fopen (const char *filename, const char *otype)
325 if (filename && !strcmp(filename, "/dev/null"))
327 return fopen(filename, otype);
331 FILE *mingw_freopen (const char *filename, const char *otype, FILE *stream)
333 if (filename && !strcmp(filename, "/dev/null"))
335 return freopen(filename, otype, stream);
339 int mingw_fflush(FILE *stream)
341 int ret = fflush(stream);
344 * write() is used behind the scenes of stdio output functions.
345 * Since git code does not check for errors after each stdio write
346 * operation, it can happen that write() is called by a later
347 * stdio function even if an earlier write() call failed. In the
348 * case of a pipe whose readable end was closed, only the first
349 * call to write() reports EPIPE on Windows. Subsequent write()
350 * calls report EINVAL. It is impossible to notice whether this
351 * fflush invocation triggered such a case, therefore, we have to
352 * catch all EINVAL errors whole-sale.
354 if (ret && errno == EINVAL)
361 * The unit of FILETIME is 100-nanoseconds since January 1, 1601, UTC.
362 * Returns the 100-nanoseconds ("hekto nanoseconds") since the epoch.
364 static inline long long filetime_to_hnsec(const FILETIME *ft)
366 long long winTime = ((long long)ft->dwHighDateTime << 32) + ft->dwLowDateTime;
367 /* Windows to Unix Epoch conversion */
368 return winTime - 116444736000000000LL;
371 static inline time_t filetime_to_time_t(const FILETIME *ft)
373 return (time_t)(filetime_to_hnsec(ft) / 10000000);
376 /* We keep the do_lstat code in a separate function to avoid recursion.
377 * When a path ends with a slash, the stat will fail with ENOENT. In
378 * this case, we strip the trailing slashes and stat again.
380 * If follow is true then act like stat() and report on the link
381 * target. Otherwise report on the link itself.
383 static int do_lstat(int follow, const char *file_name, struct stat *buf)
386 WIN32_FILE_ATTRIBUTE_DATA fdata;
388 if (!(err = get_file_attr(file_name, &fdata))) {
393 buf->st_mode = file_attr_to_st_mode(fdata.dwFileAttributes);
394 buf->st_size = fdata.nFileSizeLow |
395 (((off_t)fdata.nFileSizeHigh)<<32);
396 buf->st_dev = buf->st_rdev = 0; /* not used by Git */
397 buf->st_atime = filetime_to_time_t(&(fdata.ftLastAccessTime));
398 buf->st_mtime = filetime_to_time_t(&(fdata.ftLastWriteTime));
399 buf->st_ctime = filetime_to_time_t(&(fdata.ftCreationTime));
400 if (fdata.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) {
401 WIN32_FIND_DATAA findbuf;
402 HANDLE handle = FindFirstFileA(file_name, &findbuf);
403 if (handle != INVALID_HANDLE_VALUE) {
404 if ((findbuf.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) &&
405 (findbuf.dwReserved0 == IO_REPARSE_TAG_SYMLINK)) {
407 char buffer[MAXIMUM_REPARSE_DATA_BUFFER_SIZE];
408 buf->st_size = readlink(file_name, buffer, MAXIMUM_REPARSE_DATA_BUFFER_SIZE);
410 buf->st_mode = S_IFLNK;
412 buf->st_mode |= S_IREAD;
413 if (!(findbuf.dwFileAttributes & FILE_ATTRIBUTE_READONLY))
414 buf->st_mode |= S_IWRITE;
425 /* We provide our own lstat/fstat functions, since the provided
426 * lstat/fstat functions are so slow. These stat functions are
427 * tailored for Git's usage (read: fast), and are not meant to be
428 * complete. Note that Git stat()s are redirected to mingw_lstat()
429 * too, since Windows doesn't really handle symlinks that well.
431 static int do_stat_internal(int follow, const char *file_name, struct stat *buf)
434 static char alt_name[PATH_MAX];
436 if (!do_lstat(follow, file_name, buf))
439 /* if file_name ended in a '/', Windows returned ENOENT;
440 * try again without trailing slashes
445 namelen = strlen(file_name);
446 if (namelen && file_name[namelen-1] != '/')
448 while (namelen && file_name[namelen-1] == '/')
450 if (!namelen || namelen >= PATH_MAX)
453 memcpy(alt_name, file_name, namelen);
454 alt_name[namelen] = 0;
455 return do_lstat(follow, alt_name, buf);
458 int mingw_lstat(const char *file_name, struct stat *buf)
460 return do_stat_internal(0, file_name, buf);
462 int mingw_stat(const char *file_name, struct stat *buf)
464 return do_stat_internal(1, file_name, buf);
468 int mingw_fstat(int fd, struct stat *buf)
470 HANDLE fh = (HANDLE)_get_osfhandle(fd);
471 BY_HANDLE_FILE_INFORMATION fdata;
473 if (fh == INVALID_HANDLE_VALUE) {
477 /* direct non-file handles to MS's fstat() */
478 if (GetFileType(fh) != FILE_TYPE_DISK)
479 return _fstati64(fd, buf);
481 if (GetFileInformationByHandle(fh, &fdata)) {
486 buf->st_mode = file_attr_to_st_mode(fdata.dwFileAttributes);
487 buf->st_size = fdata.nFileSizeLow |
488 (((off_t)fdata.nFileSizeHigh)<<32);
489 buf->st_dev = buf->st_rdev = 0; /* not used by Git */
490 buf->st_atime = filetime_to_time_t(&(fdata.ftLastAccessTime));
491 buf->st_mtime = filetime_to_time_t(&(fdata.ftLastWriteTime));
492 buf->st_ctime = filetime_to_time_t(&(fdata.ftCreationTime));
499 static inline void time_t_to_filetime(time_t t, FILETIME *ft)
501 long long winTime = t * 10000000LL + 116444736000000000LL;
502 ft->dwLowDateTime = winTime;
503 ft->dwHighDateTime = winTime >> 32;
506 int mingw_utime (const char *file_name, const struct utimbuf *times)
511 /* must have write permission */
512 DWORD attrs = GetFileAttributes(file_name);
513 if (attrs != INVALID_FILE_ATTRIBUTES &&
514 (attrs & FILE_ATTRIBUTE_READONLY)) {
515 /* ignore errors here; open() will report them */
516 SetFileAttributes(file_name, attrs & ~FILE_ATTRIBUTE_READONLY);
519 if ((fh = open(file_name, O_RDWR | O_BINARY)) < 0) {
525 time_t_to_filetime(times->modtime, &mft);
526 time_t_to_filetime(times->actime, &aft);
528 GetSystemTimeAsFileTime(&mft);
531 if (!SetFileTime((HANDLE)_get_osfhandle(fh), NULL, &aft, &mft)) {
539 if (attrs != INVALID_FILE_ATTRIBUTES &&
540 (attrs & FILE_ATTRIBUTE_READONLY)) {
541 /* ignore errors again */
542 SetFileAttributes(file_name, attrs);
547 unsigned int sleep (unsigned int seconds)
553 int mkstemp(char *template)
555 char *filename = mktemp(template);
556 if (filename == NULL)
558 return open(filename, O_RDWR | O_CREAT, 0600);
561 int gettimeofday(struct timeval *tv, void *tz)
566 GetSystemTimeAsFileTime(&ft);
567 hnsec = filetime_to_hnsec(&ft);
568 tv->tv_sec = hnsec / 10000000;
569 tv->tv_usec = (hnsec % 10000000) / 10;
573 int pipe(int filedes[2])
577 /* this creates non-inheritable handles */
578 if (!CreatePipe(&h[0], &h[1], NULL, 8192)) {
579 errno = err_win_to_posix(GetLastError());
582 filedes[0] = _open_osfhandle((int)h[0], O_NOINHERIT);
583 if (filedes[0] < 0) {
588 filedes[1] = _open_osfhandle((int)h[1], O_NOINHERIT);
589 if (filedes[0] < 0) {
597 struct tm *gmtime_r(const time_t *timep, struct tm *result)
599 /* gmtime() in MSVCRT.DLL is thread-safe, but not reentrant */
600 memcpy(result, gmtime(timep), sizeof(struct tm));
604 struct tm *localtime_r(const time_t *timep, struct tm *result)
606 /* localtime() in MSVCRT.DLL is thread-safe, but not reentrant */
607 memcpy(result, localtime(timep), sizeof(struct tm));
612 char *mingw_getcwd(char *pointer, int len)
615 char *ret = getcwd(pointer, len);
618 for (i = 0; pointer[i]; i++)
619 if (pointer[i] == '\\')
625 * See http://msdn2.microsoft.com/en-us/library/17w5ykft(vs.71).aspx
626 * (Parsing C++ Command-Line Arguments)
628 static const char *quote_arg(const char *arg)
630 /* count chars to quote */
632 int force_quotes = 0;
635 if (!*p) force_quotes = 1;
637 if (isspace(*p) || *p == '*' || *p == '?' || *p == '{' || *p == '\'')
641 else if (*p == '\\') {
655 if (!force_quotes && n == 0)
658 /* insert \ where necessary */
659 d = q = xmalloc(len+n+3);
664 else if (*arg == '\\') {
666 while (*arg == '\\') {
683 static const char *parse_interpreter(const char *cmd)
685 static char buf[100];
689 /* don't even try a .exe */
691 if (n >= 4 && !strcasecmp(cmd+n-4, ".exe"))
694 fd = open(cmd, O_RDONLY);
697 n = read(fd, buf, sizeof(buf)-1);
699 if (n < 4) /* at least '#!/x' and not error */
702 if (buf[0] != '#' || buf[1] != '!')
705 p = buf + strcspn(buf, "\r\n");
710 if (!(p = strrchr(buf+2, '/')) && !(p = strrchr(buf+2, '\\')))
713 if ((opt = strchr(p+1, ' ')))
719 * Splits the PATH into parts.
721 static char **get_path_split(void)
723 char *p, **path, *envpath = mingw_getenv("PATH");
726 if (!envpath || !*envpath)
729 envpath = xstrdup(envpath);
735 if (*dir) { /* not earlier, catches series of ; */
742 path = xmalloc((n+1)*sizeof(char *));
747 path[i++] = xstrdup(p);
757 static void free_path_split(char **path)
770 * exe_only means that we only want to detect .exe files, but not scripts
771 * (which do not have an extension)
773 static char *lookup_prog(const char *dir, const char *cmd, int isexe, int exe_only)
776 snprintf(path, sizeof(path), "%s/%s.exe", dir, cmd);
778 if (!isexe && access(path, F_OK) == 0)
779 return xstrdup(path);
780 path[strlen(path)-4] = '\0';
781 if ((!exe_only || isexe) && access(path, F_OK) == 0)
782 if (!(GetFileAttributes(path) & FILE_ATTRIBUTE_DIRECTORY))
783 return xstrdup(path);
788 * Determines the absolute path of cmd using the split path in path.
789 * If cmd contains a slash or backslash, no lookup is performed.
791 static char *path_lookup(const char *cmd, char **path, int exe_only)
794 int len = strlen(cmd);
795 int isexe = len >= 4 && !strcasecmp(cmd+len-4, ".exe");
797 if (strchr(cmd, '/') || strchr(cmd, '\\'))
800 while (!prog && *path)
801 prog = lookup_prog(*path++, cmd, isexe, exe_only);
806 static int env_compare(const void *a, const void *b)
810 return strcasecmp(*ea, *eb);
814 struct pinfo_t *next;
818 struct pinfo_t *pinfo = NULL;
819 CRITICAL_SECTION pinfo_cs;
821 static pid_t mingw_spawnve_fd(const char *cmd, const char **argv, char **env,
823 int prepend_cmd, int fhin, int fhout, int fherr)
826 PROCESS_INFORMATION pi;
827 struct strbuf envblk, args;
831 /* Determine whether or not we are associated to a console */
832 HANDLE cons = CreateFile("CONOUT$", GENERIC_WRITE,
833 FILE_SHARE_WRITE, NULL, OPEN_EXISTING,
834 FILE_ATTRIBUTE_NORMAL, NULL);
835 if (cons == INVALID_HANDLE_VALUE) {
836 /* There is no console associated with this process.
837 * Since the child is a console process, Windows
838 * would normally create a console window. But
839 * since we'll be redirecting std streams, we do
840 * not need the console.
841 * It is necessary to use DETACHED_PROCESS
842 * instead of CREATE_NO_WINDOW to make ssh
843 * recognize that it has no console.
845 flags = DETACHED_PROCESS;
847 /* There is already a console. If we specified
848 * DETACHED_PROCESS here, too, Windows would
849 * disassociate the child from the console.
850 * The same is true for CREATE_NO_WINDOW.
856 memset(&si, 0, sizeof(si));
858 si.dwFlags = STARTF_USESTDHANDLES;
859 si.hStdInput = (HANDLE) _get_osfhandle(fhin);
860 si.hStdOutput = (HANDLE) _get_osfhandle(fhout);
861 si.hStdError = (HANDLE) _get_osfhandle(fherr);
863 /* concatenate argv, quoting args as we go */
864 strbuf_init(&args, 0);
866 char *quoted = (char *)quote_arg(cmd);
867 strbuf_addstr(&args, quoted);
871 for (; *argv; argv++) {
872 char *quoted = (char *)quote_arg(*argv);
874 strbuf_addch(&args, ' ');
875 strbuf_addstr(&args, quoted);
882 char **e, **sorted_env;
884 for (e = env; *e; e++)
887 /* environment must be sorted */
888 sorted_env = xmalloc(sizeof(*sorted_env) * (count + 1));
889 memcpy(sorted_env, env, sizeof(*sorted_env) * (count + 1));
890 qsort(sorted_env, count, sizeof(*sorted_env), env_compare);
892 strbuf_init(&envblk, 0);
893 for (e = sorted_env; *e; e++) {
894 strbuf_addstr(&envblk, *e);
895 strbuf_addch(&envblk, '\0');
900 memset(&pi, 0, sizeof(pi));
901 ret = CreateProcess(cmd, args.buf, NULL, NULL, TRUE, flags,
902 env ? envblk.buf : NULL, dir, &si, &pi);
905 strbuf_release(&envblk);
906 strbuf_release(&args);
912 CloseHandle(pi.hThread);
915 * The process ID is the human-readable identifier of the process
916 * that we want to present in log and error messages. The handle
917 * is not useful for this purpose. But we cannot close it, either,
918 * because it is not possible to turn a process ID into a process
919 * handle after the process terminated.
920 * Keep the handle in a list for waitpid.
922 EnterCriticalSection(&pinfo_cs);
924 struct pinfo_t *info = xmalloc(sizeof(struct pinfo_t));
925 info->pid = pi.dwProcessId;
926 info->proc = pi.hProcess;
930 LeaveCriticalSection(&pinfo_cs);
932 return (pid_t)pi.dwProcessId;
935 static pid_t mingw_spawnve(const char *cmd, const char **argv, char **env,
938 return mingw_spawnve_fd(cmd, argv, env, NULL, prepend_cmd, 0, 1, 2);
941 pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **env,
943 int fhin, int fhout, int fherr)
946 char **path = get_path_split();
947 char *prog = path_lookup(cmd, path, 0);
954 const char *interpr = parse_interpreter(prog);
957 const char *argv0 = argv[0];
958 char *iprog = path_lookup(interpr, path, 1);
965 pid = mingw_spawnve_fd(iprog, argv, env, dir, 1,
972 pid = mingw_spawnve_fd(prog, argv, env, dir, 0,
976 free_path_split(path);
980 static int try_shell_exec(const char *cmd, char *const *argv, char **env)
982 const char *interpr = parse_interpreter(cmd);
989 path = get_path_split();
990 prog = path_lookup(interpr, path, 1);
994 while (argv[argc]) argc++;
995 argv2 = xmalloc(sizeof(*argv) * (argc+1));
996 argv2[0] = (char *)cmd; /* full path to the script file */
997 memcpy(&argv2[1], &argv[1], sizeof(*argv) * argc);
998 pid = mingw_spawnve(prog, argv2, env, 1);
1001 if (waitpid(pid, &status, 0) < 0)
1005 pid = 1; /* indicate that we tried but failed */
1009 free_path_split(path);
1013 static void mingw_execve(const char *cmd, char *const *argv, char *const *env)
1015 /* check if git_command is a shell script */
1016 if (!try_shell_exec(cmd, argv, (char **)env)) {
1019 pid = mingw_spawnve(cmd, (const char **)argv, (char **)env, 0);
1022 if (waitpid(pid, &status, 0) < 0)
1028 int mingw_execvp(const char *cmd, char *const *argv)
1030 char **path = get_path_split();
1031 char *prog = path_lookup(cmd, path, 0);
1034 mingw_execve(prog, argv, environ);
1039 free_path_split(path);
1043 int mingw_execv(const char *cmd, char *const *argv)
1045 mingw_execve(cmd, argv, environ);
1049 int mingw_kill(pid_t pid, int sig)
1051 if (pid > 0 && sig == SIGTERM) {
1052 HANDLE h = OpenProcess(PROCESS_TERMINATE, FALSE, pid);
1054 if (TerminateProcess(h, -1)) {
1059 errno = err_win_to_posix(GetLastError());
1068 static char **copy_environ(void)
1074 env = xmalloc((i+1)*sizeof(*env));
1075 for (i = 0; environ[i]; i++)
1076 env[i] = xstrdup(environ[i]);
1081 void free_environ(char **env)
1084 for (i = 0; env[i]; i++)
1089 static int lookup_env(char **env, const char *name, size_t nmln)
1093 for (i = 0; env[i]; i++) {
1094 if (0 == strncmp(env[i], name, nmln)
1095 && '=' == env[i][nmln])
1103 * If name contains '=', then sets the variable, otherwise it unsets it
1105 static char **env_setenv(char **env, const char *name)
1107 char *eq = strchrnul(name, '=');
1108 int i = lookup_env(env, name, eq-name);
1112 for (i = 0; env[i]; i++)
1114 env = xrealloc(env, (i+2)*sizeof(*env));
1115 env[i] = xstrdup(name);
1122 env[i] = xstrdup(name);
1131 * Copies global environ and adjusts variables as specified by vars.
1133 char **make_augmented_environ(const char *const *vars)
1135 char **env = copy_environ();
1138 env = env_setenv(env, *vars++);
1145 * The system's getenv looks up the name in a case-insensitive manner.
1146 * This version tries a case-sensitive lookup and falls back to
1147 * case-insensitive if nothing was found. This is necessary because,
1148 * as a prominent example, CMD sets 'Path', but not 'PATH'.
1149 * Warning: not thread-safe.
1151 static char *getenv_cs(const char *name)
1153 size_t len = strlen(name);
1154 int i = lookup_env(environ, name, len);
1156 return environ[i] + len + 1; /* skip past name and '=' */
1157 return getenv(name);
1160 char *mingw_getenv(const char *name)
1162 char *result = getenv_cs(name);
1163 if (!result && !strcmp(name, "TMPDIR")) {
1164 /* on Windows it is TMP and TEMP */
1165 result = getenv_cs("TMP");
1167 result = getenv_cs("TEMP");
1173 * Note, this isn't a complete replacement for getaddrinfo. It assumes
1174 * that service contains a numerical port, or that it is null. It
1175 * does a simple search using gethostbyname, and returns one IPv4 host
1178 static int WSAAPI getaddrinfo_stub(const char *node, const char *service,
1179 const struct addrinfo *hints,
1180 struct addrinfo **res)
1182 struct hostent *h = NULL;
1183 struct addrinfo *ai;
1184 struct sockaddr_in *sin;
1187 h = gethostbyname(node);
1189 return WSAGetLastError();
1192 ai = xmalloc(sizeof(struct addrinfo));
1195 ai->ai_family = AF_INET;
1196 ai->ai_socktype = hints ? hints->ai_socktype : 0;
1197 switch (ai->ai_socktype) {
1199 ai->ai_protocol = IPPROTO_TCP;
1202 ai->ai_protocol = IPPROTO_UDP;
1205 ai->ai_protocol = 0;
1208 ai->ai_addrlen = sizeof(struct sockaddr_in);
1209 if (hints && (hints->ai_flags & AI_CANONNAME))
1210 ai->ai_canonname = h ? xstrdup(h->h_name) : NULL;
1212 ai->ai_canonname = NULL;
1214 sin = xmalloc(ai->ai_addrlen);
1215 memset(sin, 0, ai->ai_addrlen);
1216 sin->sin_family = AF_INET;
1217 /* Note: getaddrinfo is supposed to allow service to be a string,
1218 * which should be looked up using getservbyname. This is
1219 * currently not implemented */
1221 sin->sin_port = htons(atoi(service));
1223 sin->sin_addr = *(struct in_addr *)h->h_addr;
1224 else if (hints && (hints->ai_flags & AI_PASSIVE))
1225 sin->sin_addr.s_addr = INADDR_ANY;
1227 sin->sin_addr.s_addr = INADDR_LOOPBACK;
1228 ai->ai_addr = (struct sockaddr *)sin;
1233 static void WSAAPI freeaddrinfo_stub(struct addrinfo *res)
1235 free(res->ai_canonname);
1240 static int WSAAPI getnameinfo_stub(const struct sockaddr *sa, socklen_t salen,
1241 char *host, DWORD hostlen,
1242 char *serv, DWORD servlen, int flags)
1244 const struct sockaddr_in *sin = (const struct sockaddr_in *)sa;
1245 if (sa->sa_family != AF_INET)
1250 if (host && hostlen > 0) {
1251 struct hostent *ent = NULL;
1252 if (!(flags & NI_NUMERICHOST))
1253 ent = gethostbyaddr((const char *)&sin->sin_addr,
1254 sizeof(sin->sin_addr), AF_INET);
1257 snprintf(host, hostlen, "%s", ent->h_name);
1258 else if (flags & NI_NAMEREQD)
1261 snprintf(host, hostlen, "%s", inet_ntoa(sin->sin_addr));
1264 if (serv && servlen > 0) {
1265 struct servent *ent = NULL;
1266 if (!(flags & NI_NUMERICSERV))
1267 ent = getservbyport(sin->sin_port,
1268 flags & NI_DGRAM ? "udp" : "tcp");
1271 snprintf(serv, servlen, "%s", ent->s_name);
1273 snprintf(serv, servlen, "%d", ntohs(sin->sin_port));
1279 static HMODULE ipv6_dll = NULL;
1280 static void (WSAAPI *ipv6_freeaddrinfo)(struct addrinfo *res);
1281 static int (WSAAPI *ipv6_getaddrinfo)(const char *node, const char *service,
1282 const struct addrinfo *hints,
1283 struct addrinfo **res);
1284 static int (WSAAPI *ipv6_getnameinfo)(const struct sockaddr *sa, socklen_t salen,
1285 char *host, DWORD hostlen,
1286 char *serv, DWORD servlen, int flags);
1288 * gai_strerror is an inline function in the ws2tcpip.h header, so we
1289 * don't need to try to load that one dynamically.
1292 static void socket_cleanup(void)
1296 FreeLibrary(ipv6_dll);
1298 ipv6_freeaddrinfo = freeaddrinfo_stub;
1299 ipv6_getaddrinfo = getaddrinfo_stub;
1300 ipv6_getnameinfo = getnameinfo_stub;
1303 static void ensure_socket_initialization(void)
1306 static int initialized = 0;
1307 const char *libraries[] = { "ws2_32.dll", "wship6.dll", NULL };
1313 if (WSAStartup(MAKEWORD(2,2), &wsa))
1314 die("unable to initialize winsock subsystem, error %d",
1317 for (name = libraries; *name; name++) {
1318 ipv6_dll = LoadLibrary(*name);
1322 ipv6_freeaddrinfo = (void (WSAAPI *)(struct addrinfo *))
1323 GetProcAddress(ipv6_dll, "freeaddrinfo");
1324 ipv6_getaddrinfo = (int (WSAAPI *)(const char *, const char *,
1325 const struct addrinfo *,
1326 struct addrinfo **))
1327 GetProcAddress(ipv6_dll, "getaddrinfo");
1328 ipv6_getnameinfo = (int (WSAAPI *)(const struct sockaddr *,
1329 socklen_t, char *, DWORD,
1330 char *, DWORD, int))
1331 GetProcAddress(ipv6_dll, "getnameinfo");
1332 if (!ipv6_freeaddrinfo || !ipv6_getaddrinfo || !ipv6_getnameinfo) {
1333 FreeLibrary(ipv6_dll);
1338 if (!ipv6_freeaddrinfo || !ipv6_getaddrinfo || !ipv6_getnameinfo) {
1339 ipv6_freeaddrinfo = freeaddrinfo_stub;
1340 ipv6_getaddrinfo = getaddrinfo_stub;
1341 ipv6_getnameinfo = getnameinfo_stub;
1344 atexit(socket_cleanup);
1349 int mingw_gethostname(char *name, int namelen)
1351 ensure_socket_initialization();
1352 return gethostname(name, namelen);
1355 #undef gethostbyname
1356 struct hostent *mingw_gethostbyname(const char *host)
1358 ensure_socket_initialization();
1359 return gethostbyname(host);
1362 void mingw_freeaddrinfo(struct addrinfo *res)
1364 ipv6_freeaddrinfo(res);
1367 int mingw_getaddrinfo(const char *node, const char *service,
1368 const struct addrinfo *hints, struct addrinfo **res)
1370 ensure_socket_initialization();
1371 return ipv6_getaddrinfo(node, service, hints, res);
1374 int mingw_getnameinfo(const struct sockaddr *sa, socklen_t salen,
1375 char *host, DWORD hostlen, char *serv, DWORD servlen,
1378 ensure_socket_initialization();
1379 return ipv6_getnameinfo(sa, salen, host, hostlen, serv, servlen, flags);
1382 int mingw_socket(int domain, int type, int protocol)
1387 ensure_socket_initialization();
1388 s = WSASocket(domain, type, protocol, NULL, 0, 0);
1389 if (s == INVALID_SOCKET) {
1391 * WSAGetLastError() values are regular BSD error codes
1392 * biased by WSABASEERR.
1393 * However, strerror() does not know about networking
1394 * specific errors, which are values beginning at 38 or so.
1395 * Therefore, we choose to leave the biased error code
1396 * in errno so that _if_ someone looks up the code somewhere,
1397 * then it is at least the number that are usually listed.
1399 errno = WSAGetLastError();
1402 /* convert into a file descriptor */
1403 if ((sockfd = _open_osfhandle(s, O_RDWR|O_BINARY)) < 0) {
1405 return error("unable to make a socket file descriptor: %s",
1412 int mingw_connect(int sockfd, struct sockaddr *sa, size_t sz)
1414 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
1415 return connect(s, sa, sz);
1419 int mingw_bind(int sockfd, struct sockaddr *sa, size_t sz)
1421 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
1422 return bind(s, sa, sz);
1426 int mingw_setsockopt(int sockfd, int lvl, int optname, void *optval, int optlen)
1428 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
1429 return setsockopt(s, lvl, optname, (const char*)optval, optlen);
1433 int mingw_shutdown(int sockfd, int how)
1435 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
1436 return shutdown(s, how);
1440 int mingw_listen(int sockfd, int backlog)
1442 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
1443 return listen(s, backlog);
1447 int mingw_accept(int sockfd1, struct sockaddr *sa, socklen_t *sz)
1451 SOCKET s1 = (SOCKET)_get_osfhandle(sockfd1);
1452 SOCKET s2 = accept(s1, sa, sz);
1454 /* convert into a file descriptor */
1455 if ((sockfd2 = _open_osfhandle(s2, O_RDWR|O_BINARY)) < 0) {
1458 return error("unable to make a socket file descriptor: %s",
1465 int mingw_rename(const char *pold, const char *pnew)
1471 * Try native rename() first to get errno right.
1472 * It is based on MoveFile(), which cannot overwrite existing files.
1474 if (!rename(pold, pnew))
1476 if (errno != EEXIST)
1479 if (MoveFileEx(pold, pnew, MOVEFILE_REPLACE_EXISTING))
1481 /* TODO: translate more errors */
1482 gle = GetLastError();
1483 if (gle == ERROR_ACCESS_DENIED &&
1484 (attrs = GetFileAttributes(pnew)) != INVALID_FILE_ATTRIBUTES) {
1485 if (attrs & FILE_ATTRIBUTE_DIRECTORY) {
1489 if ((attrs & FILE_ATTRIBUTE_READONLY) &&
1490 SetFileAttributes(pnew, attrs & ~FILE_ATTRIBUTE_READONLY)) {
1491 if (MoveFileEx(pold, pnew, MOVEFILE_REPLACE_EXISTING))
1493 gle = GetLastError();
1494 /* revert file attributes on failure */
1495 SetFileAttributes(pnew, attrs);
1498 if (tries < ARRAY_SIZE(delay) && gle == ERROR_ACCESS_DENIED) {
1500 * We assume that some other process had the source or
1501 * destination file open at the wrong moment and retry.
1502 * In order to give the other process a higher chance to
1503 * complete its operation, we give up our time slice now.
1504 * If we have to retry again, we do sleep a bit.
1506 Sleep(delay[tries]);
1510 if (gle == ERROR_ACCESS_DENIED &&
1511 ask_yes_no_if_possible("Rename from '%s' to '%s' failed. "
1512 "Should I try again?", pold, pnew))
1520 * Note that this doesn't return the actual pagesize, but
1521 * the allocation granularity. If future Windows specific git code
1522 * needs the real getpagesize function, we need to find another solution.
1524 int mingw_getpagesize(void)
1528 return si.dwAllocationGranularity;
1531 struct passwd *getpwuid(int uid)
1533 static char user_name[100];
1534 static struct passwd p;
1536 DWORD len = sizeof(user_name);
1537 if (!GetUserName(user_name, &len))
1539 p.pw_name = user_name;
1540 p.pw_gecos = "unknown";
1545 static HANDLE timer_event;
1546 static HANDLE timer_thread;
1547 static int timer_interval;
1548 static int one_shot;
1549 static sig_handler_t timer_fn = SIG_DFL;
1551 /* The timer works like this:
1552 * The thread, ticktack(), is a trivial routine that most of the time
1553 * only waits to receive the signal to terminate. The main thread tells
1554 * the thread to terminate by setting the timer_event to the signalled
1556 * But ticktack() interrupts the wait state after the timer's interval
1557 * length to call the signal handler.
1560 static unsigned __stdcall ticktack(void *dummy)
1562 while (WaitForSingleObject(timer_event, timer_interval) == WAIT_TIMEOUT) {
1563 if (timer_fn == SIG_DFL)
1565 if (timer_fn != SIG_IGN)
1573 static int start_timer_thread(void)
1575 timer_event = CreateEvent(NULL, FALSE, FALSE, NULL);
1577 timer_thread = (HANDLE) _beginthreadex(NULL, 0, ticktack, NULL, 0, NULL);
1579 return errno = ENOMEM,
1580 error("cannot start timer thread");
1582 return errno = ENOMEM,
1583 error("cannot allocate resources for timer");
1587 static void stop_timer_thread(void)
1590 SetEvent(timer_event); /* tell thread to terminate */
1592 int rc = WaitForSingleObject(timer_thread, 1000);
1593 if (rc == WAIT_TIMEOUT)
1594 error("timer thread did not terminate timely");
1595 else if (rc != WAIT_OBJECT_0)
1596 error("waiting for timer thread failed: %lu",
1598 CloseHandle(timer_thread);
1601 CloseHandle(timer_event);
1603 timer_thread = NULL;
1606 static inline int is_timeval_eq(const struct timeval *i1, const struct timeval *i2)
1608 return i1->tv_sec == i2->tv_sec && i1->tv_usec == i2->tv_usec;
1611 int setitimer(int type, struct itimerval *in, struct itimerval *out)
1613 static const struct timeval zero;
1614 static int atexit_done;
1617 return errno = EINVAL,
1618 error("setitimer param 3 != NULL not implemented");
1619 if (!is_timeval_eq(&in->it_interval, &zero) &&
1620 !is_timeval_eq(&in->it_interval, &in->it_value))
1621 return errno = EINVAL,
1622 error("setitimer: it_interval must be zero or eq it_value");
1625 stop_timer_thread();
1627 if (is_timeval_eq(&in->it_value, &zero) &&
1628 is_timeval_eq(&in->it_interval, &zero))
1631 timer_interval = in->it_value.tv_sec * 1000 + in->it_value.tv_usec / 1000;
1632 one_shot = is_timeval_eq(&in->it_interval, &zero);
1634 atexit(stop_timer_thread);
1637 return start_timer_thread();
1640 int sigaction(int sig, struct sigaction *in, struct sigaction *out)
1643 return errno = EINVAL,
1644 error("sigaction only implemented for SIGALRM");
1646 return errno = EINVAL,
1647 error("sigaction: param 3 != NULL not implemented");
1649 timer_fn = in->sa_handler;
1654 sig_handler_t mingw_signal(int sig, sig_handler_t handler)
1656 sig_handler_t old = timer_fn;
1658 return signal(sig, handler);
1663 static const char *make_backslash_path(const char *path)
1665 static char buf[PATH_MAX + 1];
1668 if (strlcpy(buf, path, PATH_MAX) >= PATH_MAX)
1669 die("Too long path: %.*s", 60, path);
1671 for (c = buf; *c; c++) {
1678 void mingw_open_html(const char *unixpath)
1680 const char *htmlpath = make_backslash_path(unixpath);
1681 typedef HINSTANCE (WINAPI *T)(HWND, const char *,
1682 const char *, const char *, const char *, INT);
1687 shell32 = LoadLibrary("shell32.dll");
1689 die("cannot load shell32.dll");
1690 ShellExecute = (T)GetProcAddress(shell32, "ShellExecuteA");
1692 die("cannot run browser");
1694 printf("Launching default browser to display HTML ...\n");
1695 r = (int)ShellExecute(NULL, "open", htmlpath, NULL, "\\", SW_SHOWNORMAL);
1696 FreeLibrary(shell32);
1697 /* see the MSDN documentation referring to the result codes here */
1699 die("failed to launch browser for %.*s", MAX_PATH, unixpath);
1703 int link(const char *oldpath, const char *newpath)
1705 typedef BOOL (WINAPI *T)(const char*, const char*, LPSECURITY_ATTRIBUTES);
1706 static T create_hard_link = NULL;
1707 if (!create_hard_link) {
1708 create_hard_link = (T) GetProcAddress(
1709 GetModuleHandle("kernel32.dll"), "CreateHardLinkA");
1710 if (!create_hard_link)
1711 create_hard_link = (T)-1;
1713 if (create_hard_link == (T)-1) {
1717 if (!create_hard_link(newpath, oldpath, NULL)) {
1718 errno = err_win_to_posix(GetLastError());
1724 char *getpass(const char *prompt)
1726 struct strbuf buf = STRBUF_INIT;
1728 fputs(prompt, stderr);
1731 if (c == '\r' || c == '\n')
1733 strbuf_addch(&buf, c);
1735 fputs("\n", stderr);
1736 return strbuf_detach(&buf, NULL);
1739 pid_t waitpid(pid_t pid, int *status, int options)
1741 HANDLE h = OpenProcess(SYNCHRONIZE | PROCESS_QUERY_INFORMATION,
1748 if (pid > 0 && options & WNOHANG) {
1749 if (WAIT_OBJECT_0 != WaitForSingleObject(h, 0)) {
1753 options &= ~WNOHANG;
1757 struct pinfo_t **ppinfo;
1758 if (WaitForSingleObject(h, INFINITE) != WAIT_OBJECT_0) {
1764 GetExitCodeProcess(h, (LPDWORD)status);
1766 EnterCriticalSection(&pinfo_cs);
1770 struct pinfo_t *info = *ppinfo;
1771 if (info->pid == pid) {
1772 CloseHandle(info->proc);
1773 *ppinfo = info->next;
1777 ppinfo = &info->next;
1780 LeaveCriticalSection(&pinfo_cs);