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 extern int _getdrive( void );
35 /* We keep the do_lstat code in a separate function to avoid recursion.
36 * When a path ends with a slash, the stat will fail with ENOENT. In
37 * this case, we strip the trailing slashes and stat again.
39 static int do_lstat(const char *file_name, struct stat *buf)
41 WIN32_FILE_ATTRIBUTE_DATA fdata;
43 if (GetFileAttributesExA(file_name, GetFileExInfoStandard, &fdata)) {
45 if (fdata.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
49 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 = _getdrive() - 1;
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 mingw_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);
120 int mingw_fstat(int fd, struct mingw_stat *buf)
122 HANDLE fh = (HANDLE)_get_osfhandle(fd);
123 BY_HANDLE_FILE_INFORMATION fdata;
125 if (fh == INVALID_HANDLE_VALUE) {
129 /* direct non-file handles to MS's fstat() */
130 if (GetFileType(fh) != FILE_TYPE_DISK) {
134 buf->st_ino = st.st_ino;
135 buf->st_gid = st.st_gid;
136 buf->st_uid = st.st_uid;
137 buf->st_mode = st.st_mode;
138 buf->st_size = st.st_size;
139 buf->st_dev = st.st_dev;
140 buf->st_atime = st.st_atime;
141 buf->st_mtime = st.st_mtime;
142 buf->st_ctime = st.st_ctime;
146 if (GetFileInformationByHandle(fh, &fdata)) {
148 if (fdata.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
152 if (!(fdata.dwFileAttributes & FILE_ATTRIBUTE_READONLY))
158 buf->st_mode = fMode;
159 buf->st_size = fdata.nFileSizeLow; /* Can't use nFileSizeHigh, since it's not a stat64 */
160 buf->st_dev = _getdrive() - 1;
161 buf->st_atime = filetime_to_time_t(&(fdata.ftLastAccessTime));
162 buf->st_mtime = filetime_to_time_t(&(fdata.ftLastWriteTime));
163 buf->st_ctime = filetime_to_time_t(&(fdata.ftCreationTime));
170 static inline void time_t_to_filetime(time_t t, FILETIME *ft)
172 long long winTime = t * 10000000LL + 116444736000000000LL;
173 ft->dwLowDateTime = winTime;
174 ft->dwHighDateTime = winTime >> 32;
177 int mingw_utime (const char *file_name, const struct utimbuf *times)
182 /* must have write permission */
183 if ((fh = open(file_name, O_RDWR | O_BINARY)) < 0)
186 time_t_to_filetime(times->modtime, &mft);
187 time_t_to_filetime(times->actime, &aft);
188 if (!SetFileTime((HANDLE)_get_osfhandle(fh), NULL, &aft, &mft)) {
197 unsigned int sleep (unsigned int seconds)
203 int mkstemp(char *template)
205 char *filename = mktemp(template);
206 if (filename == NULL)
208 return open(filename, O_RDWR | O_CREAT, 0600);
211 int gettimeofday(struct timeval *tv, void *tz)
216 tm.tm_year = st.wYear-1900;
217 tm.tm_mon = st.wMonth-1;
218 tm.tm_mday = st.wDay;
219 tm.tm_hour = st.wHour;
220 tm.tm_min = st.wMinute;
221 tm.tm_sec = st.wSecond;
222 tv->tv_sec = tm_to_time_t(&tm);
225 tv->tv_usec = st.wMilliseconds*1000;
229 int pipe(int filedes[2])
234 if (_pipe(filedes, 8192, 0) < 0)
237 parent = GetCurrentProcess();
239 if (!DuplicateHandle (parent, (HANDLE)_get_osfhandle(filedes[0]),
240 parent, &h[0], 0, FALSE, DUPLICATE_SAME_ACCESS)) {
245 if (!DuplicateHandle (parent, (HANDLE)_get_osfhandle(filedes[1]),
246 parent, &h[1], 0, FALSE, DUPLICATE_SAME_ACCESS)) {
252 fd = _open_osfhandle((int)h[0], O_NOINHERIT);
262 fd = _open_osfhandle((int)h[1], O_NOINHERIT);
274 int poll(struct pollfd *ufds, unsigned int nfds, int timeout)
279 return errno = EINVAL, error("poll timeout not supported");
281 /* When there is only one fd to wait for, then we pretend that
282 * input is available and let the actual wait happen when the
283 * caller invokes read().
286 if (!(ufds[0].events & POLLIN))
287 return errno = EINVAL, error("POLLIN not set");
288 ufds[0].revents = POLLIN;
294 for (i = 0; i < nfds; i++) {
296 HANDLE h = (HANDLE) _get_osfhandle(ufds[i].fd);
297 if (h == INVALID_HANDLE_VALUE)
298 return -1; /* errno was set */
300 if (!(ufds[i].events & POLLIN))
301 return errno = EINVAL, error("POLLIN not set");
303 /* this emulation works only for pipes */
304 if (!PeekNamedPipe(h, NULL, 0, NULL, &avail, NULL)) {
305 int err = GetLastError();
306 if (err == ERROR_BROKEN_PIPE) {
307 ufds[i].revents = POLLHUP;
311 return error("PeekNamedPipe failed,"
312 " GetLastError: %u", err);
315 ufds[i].revents = POLLIN;
321 /* The only times that we spin here is when the process
322 * that is connected through the pipes is waiting for
323 * its own input data to become available. But since
324 * the process (pack-objects) is itself CPU intensive,
325 * it will happily pick up the time slice that we are
326 * relinguishing here.
334 struct tm *gmtime_r(const time_t *timep, struct tm *result)
336 /* gmtime() in MSVCRT.DLL is thread-safe, but not reentrant */
337 memcpy(result, gmtime(timep), sizeof(struct tm));
341 struct tm *localtime_r(const time_t *timep, struct tm *result)
343 /* localtime() in MSVCRT.DLL is thread-safe, but not reentrant */
344 memcpy(result, localtime(timep), sizeof(struct tm));
349 char *mingw_getcwd(char *pointer, int len)
352 char *ret = getcwd(pointer, len);
355 for (i = 0; pointer[i]; i++)
356 if (pointer[i] == '\\')
362 char *mingw_getenv(const char *name)
364 char *result = getenv(name);
365 if (!result && !strcmp(name, "TMPDIR")) {
366 /* on Windows it is TMP and TEMP */
367 result = getenv("TMP");
369 result = getenv("TEMP");
375 * See http://msdn2.microsoft.com/en-us/library/17w5ykft(vs.71).aspx
376 * (Parsing C++ Command-Line Arguments)
378 static const char *quote_arg(const char *arg)
380 /* count chars to quote */
382 int force_quotes = 0;
385 if (!*p) force_quotes = 1;
387 if (isspace(*p) || *p == '*' || *p == '?' || *p == '{')
391 else if (*p == '\\') {
405 if (!force_quotes && n == 0)
408 /* insert \ where necessary */
409 d = q = xmalloc(len+n+3);
414 else if (*arg == '\\') {
416 while (*arg == '\\') {
433 static const char *parse_interpreter(const char *cmd)
435 static char buf[100];
439 /* don't even try a .exe */
441 if (n >= 4 && !strcasecmp(cmd+n-4, ".exe"))
444 fd = open(cmd, O_RDONLY);
447 n = read(fd, buf, sizeof(buf)-1);
449 if (n < 4) /* at least '#!/x' and not error */
452 if (buf[0] != '#' || buf[1] != '!')
455 p = strchr(buf, '\n');
460 if (!(p = strrchr(buf+2, '/')) && !(p = strrchr(buf+2, '\\')))
463 if ((opt = strchr(p+1, ' ')))
469 * Splits the PATH into parts.
471 static char **get_path_split(void)
473 char *p, **path, *envpath = getenv("PATH");
476 if (!envpath || !*envpath)
479 envpath = xstrdup(envpath);
485 if (*dir) { /* not earlier, catches series of ; */
492 path = xmalloc((n+1)*sizeof(char*));
497 path[i++] = xstrdup(p);
507 static void free_path_split(char **path)
519 * exe_only means that we only want to detect .exe files, but not scripts
520 * (which do not have an extension)
522 static char *lookup_prog(const char *dir, const char *cmd, int isexe, int exe_only)
525 snprintf(path, sizeof(path), "%s/%s.exe", dir, cmd);
527 if (!isexe && access(path, F_OK) == 0)
528 return xstrdup(path);
529 path[strlen(path)-4] = '\0';
530 if ((!exe_only || isexe) && access(path, F_OK) == 0)
531 if (!(GetFileAttributes(path) & FILE_ATTRIBUTE_DIRECTORY))
532 return xstrdup(path);
537 * Determines the absolute path of cmd using the the split path in path.
538 * If cmd contains a slash or backslash, no lookup is performed.
540 static char *path_lookup(const char *cmd, char **path, int exe_only)
543 int len = strlen(cmd);
544 int isexe = len >= 4 && !strcasecmp(cmd+len-4, ".exe");
546 if (strchr(cmd, '/') || strchr(cmd, '\\'))
549 while (!prog && *path)
550 prog = lookup_prog(*path++, cmd, isexe, exe_only);
555 static int env_compare(const void *a, const void *b)
559 return strcasecmp(*ea, *eb);
562 static pid_t mingw_spawnve(const char *cmd, const char **argv, char **env,
566 PROCESS_INFORMATION pi;
567 struct strbuf envblk, args;
571 /* Determine whether or not we are associated to a console */
572 HANDLE cons = CreateFile("CONOUT$", GENERIC_WRITE,
573 FILE_SHARE_WRITE, NULL, OPEN_EXISTING,
574 FILE_ATTRIBUTE_NORMAL, NULL);
575 if (cons == INVALID_HANDLE_VALUE) {
576 /* There is no console associated with this process.
577 * Since the child is a console process, Windows
578 * would normally create a console window. But
579 * since we'll be redirecting std streams, we do
580 * not need the console.
582 flags = CREATE_NO_WINDOW;
584 /* There is already a console. If we specified
585 * CREATE_NO_WINDOW here, too, Windows would
586 * disassociate the child from the console.
592 memset(&si, 0, sizeof(si));
594 si.dwFlags = STARTF_USESTDHANDLES;
595 si.hStdInput = (HANDLE) _get_osfhandle(0);
596 si.hStdOutput = (HANDLE) _get_osfhandle(1);
597 si.hStdError = (HANDLE) _get_osfhandle(2);
599 /* concatenate argv, quoting args as we go */
600 strbuf_init(&args, 0);
602 char *quoted = (char *)quote_arg(cmd);
603 strbuf_addstr(&args, quoted);
607 for (; *argv; argv++) {
608 char *quoted = (char *)quote_arg(*argv);
610 strbuf_addch(&args, ' ');
611 strbuf_addstr(&args, quoted);
618 char **e, **sorted_env;
620 for (e = env; *e; e++)
623 /* environment must be sorted */
624 sorted_env = xmalloc(sizeof(*sorted_env) * (count + 1));
625 memcpy(sorted_env, env, sizeof(*sorted_env) * (count + 1));
626 qsort(sorted_env, count, sizeof(*sorted_env), env_compare);
628 strbuf_init(&envblk, 0);
629 for (e = sorted_env; *e; e++) {
630 strbuf_addstr(&envblk, *e);
631 strbuf_addch(&envblk, '\0');
636 memset(&pi, 0, sizeof(pi));
637 ret = CreateProcess(cmd, args.buf, NULL, NULL, TRUE, flags,
638 env ? envblk.buf : NULL, NULL, &si, &pi);
641 strbuf_release(&envblk);
642 strbuf_release(&args);
648 CloseHandle(pi.hThread);
649 return (pid_t)pi.hProcess;
652 pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **env)
655 char **path = get_path_split();
656 char *prog = path_lookup(cmd, path, 0);
663 const char *interpr = parse_interpreter(prog);
666 const char *argv0 = argv[0];
667 char *iprog = path_lookup(interpr, path, 1);
674 pid = mingw_spawnve(iprog, argv, env, 1);
680 pid = mingw_spawnve(prog, argv, env, 0);
683 free_path_split(path);
687 static int try_shell_exec(const char *cmd, char *const *argv, char **env)
689 const char *interpr = parse_interpreter(cmd);
696 path = get_path_split();
697 prog = path_lookup(interpr, path, 1);
701 while (argv[argc]) argc++;
702 argv2 = xmalloc(sizeof(*argv) * (argc+1));
703 argv2[0] = (char *)cmd; /* full path to the script file */
704 memcpy(&argv2[1], &argv[1], sizeof(*argv) * argc);
705 pid = mingw_spawnve(prog, argv2, env, 1);
708 if (waitpid(pid, &status, 0) < 0)
712 pid = 1; /* indicate that we tried but failed */
716 free_path_split(path);
720 static void mingw_execve(const char *cmd, char *const *argv, char *const *env)
722 /* check if git_command is a shell script */
723 if (!try_shell_exec(cmd, argv, (char **)env)) {
726 pid = mingw_spawnve(cmd, (const char **)argv, (char **)env, 0);
729 if (waitpid(pid, &status, 0) < 0)
735 void mingw_execvp(const char *cmd, char *const *argv)
737 char **path = get_path_split();
738 char *prog = path_lookup(cmd, path, 0);
741 mingw_execve(prog, argv, environ);
746 free_path_split(path);
749 char **copy_environ()
755 env = xmalloc((i+1)*sizeof(*env));
756 for (i = 0; environ[i]; i++)
757 env[i] = xstrdup(environ[i]);
762 void free_environ(char **env)
765 for (i = 0; env[i]; i++)
770 static int lookup_env(char **env, const char *name, size_t nmln)
774 for (i = 0; env[i]; i++) {
775 if (0 == strncmp(env[i], name, nmln)
776 && '=' == env[i][nmln])
784 * If name contains '=', then sets the variable, otherwise it unsets it
786 char **env_setenv(char **env, const char *name)
788 char *eq = strchrnul(name, '=');
789 int i = lookup_env(env, name, eq-name);
793 for (i = 0; env[i]; i++)
795 env = xrealloc(env, (i+2)*sizeof(*env));
796 env[i] = xstrdup(name);
803 env[i] = xstrdup(name);
811 /* this is the first function to call into WS_32; initialize it */
813 struct hostent *mingw_gethostbyname(const char *host)
817 if (WSAStartup(MAKEWORD(2,2), &wsa))
818 die("unable to initialize winsock subsystem, error %d",
820 atexit((void(*)(void)) WSACleanup);
821 return gethostbyname(host);
824 int mingw_socket(int domain, int type, int protocol)
827 SOCKET s = WSASocket(domain, type, protocol, NULL, 0, 0);
828 if (s == INVALID_SOCKET) {
830 * WSAGetLastError() values are regular BSD error codes
831 * biased by WSABASEERR.
832 * However, strerror() does not know about networking
833 * specific errors, which are values beginning at 38 or so.
834 * Therefore, we choose to leave the biased error code
835 * in errno so that _if_ someone looks up the code somewhere,
836 * then it is at least the number that are usually listed.
838 errno = WSAGetLastError();
841 /* convert into a file descriptor */
842 if ((sockfd = _open_osfhandle(s, O_RDWR|O_BINARY)) < 0) {
844 return error("unable to make a socket file descriptor: %s",
851 int mingw_connect(int sockfd, struct sockaddr *sa, size_t sz)
853 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
854 return connect(s, sa, sz);
858 int mingw_rename(const char *pold, const char *pnew)
861 * Try native rename() first to get errno right.
862 * It is based on MoveFile(), which cannot overwrite existing files.
864 if (!rename(pold, pnew))
868 if (MoveFileEx(pold, pnew, MOVEFILE_REPLACE_EXISTING))
870 /* TODO: translate more errors */
871 if (GetLastError() == ERROR_ACCESS_DENIED) {
872 DWORD attrs = GetFileAttributes(pnew);
873 if (attrs != INVALID_FILE_ATTRIBUTES && (attrs & FILE_ATTRIBUTE_DIRECTORY)) {
882 struct passwd *getpwuid(int uid)
884 static char user_name[100];
885 static struct passwd p;
887 DWORD len = sizeof(user_name);
888 if (!GetUserName(user_name, &len))
890 p.pw_name = user_name;
891 p.pw_gecos = "unknown";
896 static HANDLE timer_event;
897 static HANDLE timer_thread;
898 static int timer_interval;
900 static sig_handler_t timer_fn = SIG_DFL;
902 /* The timer works like this:
903 * The thread, ticktack(), is a trivial routine that most of the time
904 * only waits to receive the signal to terminate. The main thread tells
905 * the thread to terminate by setting the timer_event to the signalled
907 * But ticktack() interrupts the wait state after the timer's interval
908 * length to call the signal handler.
911 static __stdcall unsigned ticktack(void *dummy)
913 while (WaitForSingleObject(timer_event, timer_interval) == WAIT_TIMEOUT) {
914 if (timer_fn == SIG_DFL)
916 if (timer_fn != SIG_IGN)
924 static int start_timer_thread(void)
926 timer_event = CreateEvent(NULL, FALSE, FALSE, NULL);
928 timer_thread = (HANDLE) _beginthreadex(NULL, 0, ticktack, NULL, 0, NULL);
930 return errno = ENOMEM,
931 error("cannot start timer thread");
933 return errno = ENOMEM,
934 error("cannot allocate resources for timer");
938 static void stop_timer_thread(void)
941 SetEvent(timer_event); /* tell thread to terminate */
943 int rc = WaitForSingleObject(timer_thread, 1000);
944 if (rc == WAIT_TIMEOUT)
945 error("timer thread did not terminate timely");
946 else if (rc != WAIT_OBJECT_0)
947 error("waiting for timer thread failed: %lu",
949 CloseHandle(timer_thread);
952 CloseHandle(timer_event);
957 static inline int is_timeval_eq(const struct timeval *i1, const struct timeval *i2)
959 return i1->tv_sec == i2->tv_sec && i1->tv_usec == i2->tv_usec;
962 int setitimer(int type, struct itimerval *in, struct itimerval *out)
964 static const struct timeval zero;
965 static int atexit_done;
968 return errno = EINVAL,
969 error("setitimer param 3 != NULL not implemented");
970 if (!is_timeval_eq(&in->it_interval, &zero) &&
971 !is_timeval_eq(&in->it_interval, &in->it_value))
972 return errno = EINVAL,
973 error("setitimer: it_interval must be zero or eq it_value");
978 if (is_timeval_eq(&in->it_value, &zero) &&
979 is_timeval_eq(&in->it_interval, &zero))
982 timer_interval = in->it_value.tv_sec * 1000 + in->it_value.tv_usec / 1000;
983 one_shot = is_timeval_eq(&in->it_interval, &zero);
985 atexit(stop_timer_thread);
988 return start_timer_thread();
991 int sigaction(int sig, struct sigaction *in, struct sigaction *out)
994 return errno = EINVAL,
995 error("sigaction only implemented for SIGALRM");
997 return errno = EINVAL,
998 error("sigaction: param 3 != NULL not implemented");
1000 timer_fn = in->sa_handler;
1005 sig_handler_t mingw_signal(int sig, sig_handler_t handler)
1008 return signal(sig, handler);
1009 sig_handler_t old = timer_fn;
1014 static const char *make_backslash_path(const char *path)
1016 static char buf[PATH_MAX + 1];
1019 if (strlcpy(buf, path, PATH_MAX) >= PATH_MAX)
1020 die("Too long path: %.*s", 60, path);
1022 for (c = buf; *c; c++) {
1029 void mingw_open_html(const char *unixpath)
1031 const char *htmlpath = make_backslash_path(unixpath);
1032 printf("Launching default browser to display HTML ...\n");
1033 ShellExecute(NULL, "open", htmlpath, NULL, "\\", 0);