1 #include "../git-compat-util.h"
4 unsigned int _CRT_fmode = _O_BINARY;
7 int mingw_open (const char *filename, int oflags, ...)
11 va_start(args, oflags);
12 mode = va_arg(args, int);
15 if (!strcmp(filename, "/dev/null"))
17 int fd = open(filename, oflags, mode);
18 if (fd < 0 && (oflags & O_CREAT) && errno == EACCES) {
19 DWORD attrs = GetFileAttributes(filename);
20 if (attrs != INVALID_FILE_ATTRIBUTES && (attrs & FILE_ATTRIBUTE_DIRECTORY))
26 static inline time_t filetime_to_time_t(const FILETIME *ft)
28 long long winTime = ((long long)ft->dwHighDateTime << 32) + ft->dwLowDateTime;
29 winTime -= 116444736000000000LL; /* Windows to Unix Epoch conversion */
30 winTime /= 10000000; /* Nano to seconds resolution */
31 return (time_t)winTime;
34 /* We keep the do_lstat code in a separate function to avoid recursion.
35 * When a path ends with a slash, the stat will fail with ENOENT. In
36 * this case, we strip the trailing slashes and stat again.
38 static int do_lstat(const char *file_name, struct stat *buf)
40 WIN32_FILE_ATTRIBUTE_DATA fdata;
42 if (GetFileAttributesExA(file_name, GetFileExInfoStandard, &fdata)) {
44 if (fdata.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
48 if (!(fdata.dwFileAttributes & FILE_ATTRIBUTE_READONLY))
56 buf->st_size = fdata.nFileSizeLow; /* Can't use nFileSizeHigh, since it's not a stat64 */
57 buf->st_dev = buf->st_rdev = 0; /* not used by Git */
58 buf->st_atime = filetime_to_time_t(&(fdata.ftLastAccessTime));
59 buf->st_mtime = filetime_to_time_t(&(fdata.ftLastWriteTime));
60 buf->st_ctime = filetime_to_time_t(&(fdata.ftCreationTime));
65 switch (GetLastError()) {
66 case ERROR_ACCESS_DENIED:
67 case ERROR_SHARING_VIOLATION:
68 case ERROR_LOCK_VIOLATION:
69 case ERROR_SHARING_BUFFER_EXCEEDED:
72 case ERROR_BUFFER_OVERFLOW:
75 case ERROR_NOT_ENOUGH_MEMORY:
85 /* We provide our own lstat/fstat functions, since the provided
86 * lstat/fstat functions are so slow. These stat functions are
87 * tailored for Git's usage (read: fast), and are not meant to be
88 * complete. Note that Git stat()s are redirected to mingw_lstat()
89 * too, since Windows doesn't really handle symlinks that well.
91 int mingw_lstat(const char *file_name, struct stat *buf)
94 static char alt_name[PATH_MAX];
96 if (!do_lstat(file_name, buf))
99 /* if file_name ended in a '/', Windows returned ENOENT;
100 * try again without trailing slashes
105 namelen = strlen(file_name);
106 if (namelen && file_name[namelen-1] != '/')
108 while (namelen && file_name[namelen-1] == '/')
110 if (!namelen || namelen >= PATH_MAX)
113 memcpy(alt_name, file_name, namelen);
114 alt_name[namelen] = 0;
115 return do_lstat(alt_name, buf);
119 int mingw_fstat(int fd, struct stat *buf)
121 HANDLE fh = (HANDLE)_get_osfhandle(fd);
122 BY_HANDLE_FILE_INFORMATION fdata;
124 if (fh == INVALID_HANDLE_VALUE) {
128 /* direct non-file handles to MS's fstat() */
129 if (GetFileType(fh) != FILE_TYPE_DISK)
130 return fstat(fd, buf);
132 if (GetFileInformationByHandle(fh, &fdata)) {
134 if (fdata.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
138 if (!(fdata.dwFileAttributes & FILE_ATTRIBUTE_READONLY))
145 buf->st_mode = fMode;
146 buf->st_size = fdata.nFileSizeLow; /* Can't use nFileSizeHigh, since it's not a stat64 */
147 buf->st_dev = buf->st_rdev = 0; /* not used by Git */
148 buf->st_atime = filetime_to_time_t(&(fdata.ftLastAccessTime));
149 buf->st_mtime = filetime_to_time_t(&(fdata.ftLastWriteTime));
150 buf->st_ctime = filetime_to_time_t(&(fdata.ftCreationTime));
157 static inline void time_t_to_filetime(time_t t, FILETIME *ft)
159 long long winTime = t * 10000000LL + 116444736000000000LL;
160 ft->dwLowDateTime = winTime;
161 ft->dwHighDateTime = winTime >> 32;
164 int mingw_utime (const char *file_name, const struct utimbuf *times)
169 /* must have write permission */
170 if ((fh = open(file_name, O_RDWR | O_BINARY)) < 0)
173 time_t_to_filetime(times->modtime, &mft);
174 time_t_to_filetime(times->actime, &aft);
175 if (!SetFileTime((HANDLE)_get_osfhandle(fh), NULL, &aft, &mft)) {
184 unsigned int sleep (unsigned int seconds)
190 int mkstemp(char *template)
192 char *filename = mktemp(template);
193 if (filename == NULL)
195 return open(filename, O_RDWR | O_CREAT, 0600);
198 int gettimeofday(struct timeval *tv, void *tz)
203 tm.tm_year = st.wYear-1900;
204 tm.tm_mon = st.wMonth-1;
205 tm.tm_mday = st.wDay;
206 tm.tm_hour = st.wHour;
207 tm.tm_min = st.wMinute;
208 tm.tm_sec = st.wSecond;
209 tv->tv_sec = tm_to_time_t(&tm);
212 tv->tv_usec = st.wMilliseconds*1000;
216 int pipe(int filedes[2])
221 if (_pipe(filedes, 8192, 0) < 0)
224 parent = GetCurrentProcess();
226 if (!DuplicateHandle (parent, (HANDLE)_get_osfhandle(filedes[0]),
227 parent, &h[0], 0, FALSE, DUPLICATE_SAME_ACCESS)) {
232 if (!DuplicateHandle (parent, (HANDLE)_get_osfhandle(filedes[1]),
233 parent, &h[1], 0, FALSE, DUPLICATE_SAME_ACCESS)) {
239 fd = _open_osfhandle((int)h[0], O_NOINHERIT);
249 fd = _open_osfhandle((int)h[1], O_NOINHERIT);
261 int poll(struct pollfd *ufds, unsigned int nfds, int timeout)
270 return errno = EINVAL, error("poll timeout not supported");
273 /* When there is only one fd to wait for, then we pretend that
274 * input is available and let the actual wait happen when the
275 * caller invokes read().
278 if (!(ufds[0].events & POLLIN))
279 return errno = EINVAL, error("POLLIN not set");
280 ufds[0].revents = POLLIN;
286 for (i = 0; i < nfds; i++) {
288 HANDLE h = (HANDLE) _get_osfhandle(ufds[i].fd);
289 if (h == INVALID_HANDLE_VALUE)
290 return -1; /* errno was set */
292 if (!(ufds[i].events & POLLIN))
293 return errno = EINVAL, error("POLLIN not set");
295 /* this emulation works only for pipes */
296 if (!PeekNamedPipe(h, NULL, 0, NULL, &avail, NULL)) {
297 int err = GetLastError();
298 if (err == ERROR_BROKEN_PIPE) {
299 ufds[i].revents = POLLHUP;
303 return error("PeekNamedPipe failed,"
304 " GetLastError: %u", err);
307 ufds[i].revents = POLLIN;
313 /* The only times that we spin here is when the process
314 * that is connected through the pipes is waiting for
315 * its own input data to become available. But since
316 * the process (pack-objects) is itself CPU intensive,
317 * it will happily pick up the time slice that we are
318 * relinguishing here.
326 struct tm *gmtime_r(const time_t *timep, struct tm *result)
328 /* gmtime() in MSVCRT.DLL is thread-safe, but not reentrant */
329 memcpy(result, gmtime(timep), sizeof(struct tm));
333 struct tm *localtime_r(const time_t *timep, struct tm *result)
335 /* localtime() in MSVCRT.DLL is thread-safe, but not reentrant */
336 memcpy(result, localtime(timep), sizeof(struct tm));
341 char *mingw_getcwd(char *pointer, int len)
344 char *ret = getcwd(pointer, len);
347 for (i = 0; pointer[i]; i++)
348 if (pointer[i] == '\\')
354 char *mingw_getenv(const char *name)
356 char *result = getenv(name);
357 if (!result && !strcmp(name, "TMPDIR")) {
358 /* on Windows it is TMP and TEMP */
359 result = getenv("TMP");
361 result = getenv("TEMP");
367 * See http://msdn2.microsoft.com/en-us/library/17w5ykft(vs.71).aspx
368 * (Parsing C++ Command-Line Arguments)
370 static const char *quote_arg(const char *arg)
372 /* count chars to quote */
374 int force_quotes = 0;
377 if (!*p) force_quotes = 1;
379 if (isspace(*p) || *p == '*' || *p == '?' || *p == '{')
383 else if (*p == '\\') {
397 if (!force_quotes && n == 0)
400 /* insert \ where necessary */
401 d = q = xmalloc(len+n+3);
406 else if (*arg == '\\') {
408 while (*arg == '\\') {
425 static const char *parse_interpreter(const char *cmd)
427 static char buf[100];
431 /* don't even try a .exe */
433 if (n >= 4 && !strcasecmp(cmd+n-4, ".exe"))
436 fd = open(cmd, O_RDONLY);
439 n = read(fd, buf, sizeof(buf)-1);
441 if (n < 4) /* at least '#!/x' and not error */
444 if (buf[0] != '#' || buf[1] != '!')
447 p = strchr(buf, '\n');
452 if (!(p = strrchr(buf+2, '/')) && !(p = strrchr(buf+2, '\\')))
455 if ((opt = strchr(p+1, ' ')))
461 * Splits the PATH into parts.
463 static char **get_path_split(void)
465 char *p, **path, *envpath = getenv("PATH");
468 if (!envpath || !*envpath)
471 envpath = xstrdup(envpath);
477 if (*dir) { /* not earlier, catches series of ; */
484 path = xmalloc((n+1)*sizeof(char*));
489 path[i++] = xstrdup(p);
499 static void free_path_split(char **path)
511 * exe_only means that we only want to detect .exe files, but not scripts
512 * (which do not have an extension)
514 static char *lookup_prog(const char *dir, const char *cmd, int isexe, int exe_only)
517 snprintf(path, sizeof(path), "%s/%s.exe", dir, cmd);
519 if (!isexe && access(path, F_OK) == 0)
520 return xstrdup(path);
521 path[strlen(path)-4] = '\0';
522 if ((!exe_only || isexe) && access(path, F_OK) == 0)
523 if (!(GetFileAttributes(path) & FILE_ATTRIBUTE_DIRECTORY))
524 return xstrdup(path);
529 * Determines the absolute path of cmd using the the split path in path.
530 * If cmd contains a slash or backslash, no lookup is performed.
532 static char *path_lookup(const char *cmd, char **path, int exe_only)
535 int len = strlen(cmd);
536 int isexe = len >= 4 && !strcasecmp(cmd+len-4, ".exe");
538 if (strchr(cmd, '/') || strchr(cmd, '\\'))
541 while (!prog && *path)
542 prog = lookup_prog(*path++, cmd, isexe, exe_only);
547 static int env_compare(const void *a, const void *b)
551 return strcasecmp(*ea, *eb);
554 static pid_t mingw_spawnve(const char *cmd, const char **argv, char **env,
558 PROCESS_INFORMATION pi;
559 struct strbuf envblk, args;
563 /* Determine whether or not we are associated to a console */
564 HANDLE cons = CreateFile("CONOUT$", GENERIC_WRITE,
565 FILE_SHARE_WRITE, NULL, OPEN_EXISTING,
566 FILE_ATTRIBUTE_NORMAL, NULL);
567 if (cons == INVALID_HANDLE_VALUE) {
568 /* There is no console associated with this process.
569 * Since the child is a console process, Windows
570 * would normally create a console window. But
571 * since we'll be redirecting std streams, we do
572 * not need the console.
574 flags = CREATE_NO_WINDOW;
576 /* There is already a console. If we specified
577 * CREATE_NO_WINDOW here, too, Windows would
578 * disassociate the child from the console.
584 memset(&si, 0, sizeof(si));
586 si.dwFlags = STARTF_USESTDHANDLES;
587 si.hStdInput = (HANDLE) _get_osfhandle(0);
588 si.hStdOutput = (HANDLE) _get_osfhandle(1);
589 si.hStdError = (HANDLE) _get_osfhandle(2);
591 /* concatenate argv, quoting args as we go */
592 strbuf_init(&args, 0);
594 char *quoted = (char *)quote_arg(cmd);
595 strbuf_addstr(&args, quoted);
599 for (; *argv; argv++) {
600 char *quoted = (char *)quote_arg(*argv);
602 strbuf_addch(&args, ' ');
603 strbuf_addstr(&args, quoted);
610 char **e, **sorted_env;
612 for (e = env; *e; e++)
615 /* environment must be sorted */
616 sorted_env = xmalloc(sizeof(*sorted_env) * (count + 1));
617 memcpy(sorted_env, env, sizeof(*sorted_env) * (count + 1));
618 qsort(sorted_env, count, sizeof(*sorted_env), env_compare);
620 strbuf_init(&envblk, 0);
621 for (e = sorted_env; *e; e++) {
622 strbuf_addstr(&envblk, *e);
623 strbuf_addch(&envblk, '\0');
628 memset(&pi, 0, sizeof(pi));
629 ret = CreateProcess(cmd, args.buf, NULL, NULL, TRUE, flags,
630 env ? envblk.buf : NULL, NULL, &si, &pi);
633 strbuf_release(&envblk);
634 strbuf_release(&args);
640 CloseHandle(pi.hThread);
641 return (pid_t)pi.hProcess;
644 pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **env)
647 char **path = get_path_split();
648 char *prog = path_lookup(cmd, path, 0);
655 const char *interpr = parse_interpreter(prog);
658 const char *argv0 = argv[0];
659 char *iprog = path_lookup(interpr, path, 1);
666 pid = mingw_spawnve(iprog, argv, env, 1);
672 pid = mingw_spawnve(prog, argv, env, 0);
675 free_path_split(path);
679 static int try_shell_exec(const char *cmd, char *const *argv, char **env)
681 const char *interpr = parse_interpreter(cmd);
688 path = get_path_split();
689 prog = path_lookup(interpr, path, 1);
693 while (argv[argc]) argc++;
694 argv2 = xmalloc(sizeof(*argv) * (argc+1));
695 argv2[0] = (char *)cmd; /* full path to the script file */
696 memcpy(&argv2[1], &argv[1], sizeof(*argv) * argc);
697 pid = mingw_spawnve(prog, argv2, env, 1);
700 if (waitpid(pid, &status, 0) < 0)
704 pid = 1; /* indicate that we tried but failed */
708 free_path_split(path);
712 static void mingw_execve(const char *cmd, char *const *argv, char *const *env)
714 /* check if git_command is a shell script */
715 if (!try_shell_exec(cmd, argv, (char **)env)) {
718 pid = mingw_spawnve(cmd, (const char **)argv, (char **)env, 0);
721 if (waitpid(pid, &status, 0) < 0)
727 void mingw_execvp(const char *cmd, char *const *argv)
729 char **path = get_path_split();
730 char *prog = path_lookup(cmd, path, 0);
733 mingw_execve(prog, argv, environ);
738 free_path_split(path);
741 char **copy_environ()
747 env = xmalloc((i+1)*sizeof(*env));
748 for (i = 0; environ[i]; i++)
749 env[i] = xstrdup(environ[i]);
754 void free_environ(char **env)
757 for (i = 0; env[i]; i++)
762 static int lookup_env(char **env, const char *name, size_t nmln)
766 for (i = 0; env[i]; i++) {
767 if (0 == strncmp(env[i], name, nmln)
768 && '=' == env[i][nmln])
776 * If name contains '=', then sets the variable, otherwise it unsets it
778 char **env_setenv(char **env, const char *name)
780 char *eq = strchrnul(name, '=');
781 int i = lookup_env(env, name, eq-name);
785 for (i = 0; env[i]; i++)
787 env = xrealloc(env, (i+2)*sizeof(*env));
788 env[i] = xstrdup(name);
795 env[i] = xstrdup(name);
803 /* this is the first function to call into WS_32; initialize it */
805 struct hostent *mingw_gethostbyname(const char *host)
809 if (WSAStartup(MAKEWORD(2,2), &wsa))
810 die("unable to initialize winsock subsystem, error %d",
812 atexit((void(*)(void)) WSACleanup);
813 return gethostbyname(host);
816 int mingw_socket(int domain, int type, int protocol)
819 SOCKET s = WSASocket(domain, type, protocol, NULL, 0, 0);
820 if (s == INVALID_SOCKET) {
822 * WSAGetLastError() values are regular BSD error codes
823 * biased by WSABASEERR.
824 * However, strerror() does not know about networking
825 * specific errors, which are values beginning at 38 or so.
826 * Therefore, we choose to leave the biased error code
827 * in errno so that _if_ someone looks up the code somewhere,
828 * then it is at least the number that are usually listed.
830 errno = WSAGetLastError();
833 /* convert into a file descriptor */
834 if ((sockfd = _open_osfhandle(s, O_RDWR|O_BINARY)) < 0) {
836 return error("unable to make a socket file descriptor: %s",
843 int mingw_connect(int sockfd, struct sockaddr *sa, size_t sz)
845 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
846 return connect(s, sa, sz);
850 int mingw_rename(const char *pold, const char *pnew)
853 * Try native rename() first to get errno right.
854 * It is based on MoveFile(), which cannot overwrite existing files.
856 if (!rename(pold, pnew))
860 if (MoveFileEx(pold, pnew, MOVEFILE_REPLACE_EXISTING))
862 /* TODO: translate more errors */
863 if (GetLastError() == ERROR_ACCESS_DENIED) {
864 DWORD attrs = GetFileAttributes(pnew);
865 if (attrs != INVALID_FILE_ATTRIBUTES && (attrs & FILE_ATTRIBUTE_DIRECTORY)) {
874 struct passwd *getpwuid(int uid)
876 static char user_name[100];
877 static struct passwd p;
879 DWORD len = sizeof(user_name);
880 if (!GetUserName(user_name, &len))
882 p.pw_name = user_name;
883 p.pw_gecos = "unknown";
888 static HANDLE timer_event;
889 static HANDLE timer_thread;
890 static int timer_interval;
892 static sig_handler_t timer_fn = SIG_DFL;
894 /* The timer works like this:
895 * The thread, ticktack(), is a trivial routine that most of the time
896 * only waits to receive the signal to terminate. The main thread tells
897 * the thread to terminate by setting the timer_event to the signalled
899 * But ticktack() interrupts the wait state after the timer's interval
900 * length to call the signal handler.
903 static __stdcall unsigned ticktack(void *dummy)
905 while (WaitForSingleObject(timer_event, timer_interval) == WAIT_TIMEOUT) {
906 if (timer_fn == SIG_DFL)
908 if (timer_fn != SIG_IGN)
916 static int start_timer_thread(void)
918 timer_event = CreateEvent(NULL, FALSE, FALSE, NULL);
920 timer_thread = (HANDLE) _beginthreadex(NULL, 0, ticktack, NULL, 0, NULL);
922 return errno = ENOMEM,
923 error("cannot start timer thread");
925 return errno = ENOMEM,
926 error("cannot allocate resources for timer");
930 static void stop_timer_thread(void)
933 SetEvent(timer_event); /* tell thread to terminate */
935 int rc = WaitForSingleObject(timer_thread, 1000);
936 if (rc == WAIT_TIMEOUT)
937 error("timer thread did not terminate timely");
938 else if (rc != WAIT_OBJECT_0)
939 error("waiting for timer thread failed: %lu",
941 CloseHandle(timer_thread);
944 CloseHandle(timer_event);
949 static inline int is_timeval_eq(const struct timeval *i1, const struct timeval *i2)
951 return i1->tv_sec == i2->tv_sec && i1->tv_usec == i2->tv_usec;
954 int setitimer(int type, struct itimerval *in, struct itimerval *out)
956 static const struct timeval zero;
957 static int atexit_done;
960 return errno = EINVAL,
961 error("setitimer param 3 != NULL not implemented");
962 if (!is_timeval_eq(&in->it_interval, &zero) &&
963 !is_timeval_eq(&in->it_interval, &in->it_value))
964 return errno = EINVAL,
965 error("setitimer: it_interval must be zero or eq it_value");
970 if (is_timeval_eq(&in->it_value, &zero) &&
971 is_timeval_eq(&in->it_interval, &zero))
974 timer_interval = in->it_value.tv_sec * 1000 + in->it_value.tv_usec / 1000;
975 one_shot = is_timeval_eq(&in->it_interval, &zero);
977 atexit(stop_timer_thread);
980 return start_timer_thread();
983 int sigaction(int sig, struct sigaction *in, struct sigaction *out)
986 return errno = EINVAL,
987 error("sigaction only implemented for SIGALRM");
989 return errno = EINVAL,
990 error("sigaction: param 3 != NULL not implemented");
992 timer_fn = in->sa_handler;
997 sig_handler_t mingw_signal(int sig, sig_handler_t handler)
1000 return signal(sig, handler);
1001 sig_handler_t old = timer_fn;
1006 static const char *make_backslash_path(const char *path)
1008 static char buf[PATH_MAX + 1];
1011 if (strlcpy(buf, path, PATH_MAX) >= PATH_MAX)
1012 die("Too long path: %.*s", 60, path);
1014 for (c = buf; *c; c++) {
1021 void mingw_open_html(const char *unixpath)
1023 const char *htmlpath = make_backslash_path(unixpath);
1024 printf("Launching default browser to display HTML ...\n");
1025 ShellExecute(NULL, "open", htmlpath, NULL, "\\", 0);