1 #include "../git-compat-util.h"
6 int err_win_to_posix(DWORD winerr)
10 case ERROR_ACCESS_DENIED: error = EACCES; break;
11 case ERROR_ACCOUNT_DISABLED: error = EACCES; break;
12 case ERROR_ACCOUNT_RESTRICTION: error = EACCES; break;
13 case ERROR_ALREADY_ASSIGNED: error = EBUSY; break;
14 case ERROR_ALREADY_EXISTS: error = EEXIST; break;
15 case ERROR_ARITHMETIC_OVERFLOW: error = ERANGE; break;
16 case ERROR_BAD_COMMAND: error = EIO; break;
17 case ERROR_BAD_DEVICE: error = ENODEV; break;
18 case ERROR_BAD_DRIVER_LEVEL: error = ENXIO; break;
19 case ERROR_BAD_EXE_FORMAT: error = ENOEXEC; break;
20 case ERROR_BAD_FORMAT: error = ENOEXEC; break;
21 case ERROR_BAD_LENGTH: error = EINVAL; break;
22 case ERROR_BAD_PATHNAME: error = ENOENT; break;
23 case ERROR_BAD_PIPE: error = EPIPE; break;
24 case ERROR_BAD_UNIT: error = ENODEV; break;
25 case ERROR_BAD_USERNAME: error = EINVAL; break;
26 case ERROR_BROKEN_PIPE: error = EPIPE; break;
27 case ERROR_BUFFER_OVERFLOW: error = ENAMETOOLONG; break;
28 case ERROR_BUSY: error = EBUSY; break;
29 case ERROR_BUSY_DRIVE: error = EBUSY; break;
30 case ERROR_CALL_NOT_IMPLEMENTED: error = ENOSYS; break;
31 case ERROR_CANNOT_MAKE: error = EACCES; break;
32 case ERROR_CANTOPEN: error = EIO; break;
33 case ERROR_CANTREAD: error = EIO; break;
34 case ERROR_CANTWRITE: error = EIO; break;
35 case ERROR_CRC: error = EIO; break;
36 case ERROR_CURRENT_DIRECTORY: error = EACCES; break;
37 case ERROR_DEVICE_IN_USE: error = EBUSY; break;
38 case ERROR_DEV_NOT_EXIST: error = ENODEV; break;
39 case ERROR_DIRECTORY: error = EINVAL; break;
40 case ERROR_DIR_NOT_EMPTY: error = ENOTEMPTY; break;
41 case ERROR_DISK_CHANGE: error = EIO; break;
42 case ERROR_DISK_FULL: error = ENOSPC; break;
43 case ERROR_DRIVE_LOCKED: error = EBUSY; break;
44 case ERROR_ENVVAR_NOT_FOUND: error = EINVAL; break;
45 case ERROR_EXE_MARKED_INVALID: error = ENOEXEC; break;
46 case ERROR_FILENAME_EXCED_RANGE: error = ENAMETOOLONG; break;
47 case ERROR_FILE_EXISTS: error = EEXIST; break;
48 case ERROR_FILE_INVALID: error = ENODEV; break;
49 case ERROR_FILE_NOT_FOUND: error = ENOENT; break;
50 case ERROR_GEN_FAILURE: error = EIO; break;
51 case ERROR_HANDLE_DISK_FULL: error = ENOSPC; break;
52 case ERROR_INSUFFICIENT_BUFFER: error = ENOMEM; break;
53 case ERROR_INVALID_ACCESS: error = EACCES; break;
54 case ERROR_INVALID_ADDRESS: error = EFAULT; break;
55 case ERROR_INVALID_BLOCK: error = EFAULT; break;
56 case ERROR_INVALID_DATA: error = EINVAL; break;
57 case ERROR_INVALID_DRIVE: error = ENODEV; break;
58 case ERROR_INVALID_EXE_SIGNATURE: error = ENOEXEC; break;
59 case ERROR_INVALID_FLAGS: error = EINVAL; break;
60 case ERROR_INVALID_FUNCTION: error = ENOSYS; break;
61 case ERROR_INVALID_HANDLE: error = EBADF; break;
62 case ERROR_INVALID_LOGON_HOURS: error = EACCES; break;
63 case ERROR_INVALID_NAME: error = EINVAL; break;
64 case ERROR_INVALID_OWNER: error = EINVAL; break;
65 case ERROR_INVALID_PARAMETER: error = EINVAL; break;
66 case ERROR_INVALID_PASSWORD: error = EPERM; break;
67 case ERROR_INVALID_PRIMARY_GROUP: error = EINVAL; break;
68 case ERROR_INVALID_SIGNAL_NUMBER: error = EINVAL; break;
69 case ERROR_INVALID_TARGET_HANDLE: error = EIO; break;
70 case ERROR_INVALID_WORKSTATION: error = EACCES; break;
71 case ERROR_IO_DEVICE: error = EIO; break;
72 case ERROR_IO_INCOMPLETE: error = EINTR; break;
73 case ERROR_LOCKED: error = EBUSY; break;
74 case ERROR_LOCK_VIOLATION: error = EACCES; break;
75 case ERROR_LOGON_FAILURE: error = EACCES; break;
76 case ERROR_MAPPED_ALIGNMENT: error = EINVAL; break;
77 case ERROR_META_EXPANSION_TOO_LONG: error = E2BIG; break;
78 case ERROR_MORE_DATA: error = EPIPE; break;
79 case ERROR_NEGATIVE_SEEK: error = ESPIPE; break;
80 case ERROR_NOACCESS: error = EFAULT; break;
81 case ERROR_NONE_MAPPED: error = EINVAL; break;
82 case ERROR_NOT_ENOUGH_MEMORY: error = ENOMEM; break;
83 case ERROR_NOT_READY: error = EAGAIN; break;
84 case ERROR_NOT_SAME_DEVICE: error = EXDEV; break;
85 case ERROR_NO_DATA: error = EPIPE; break;
86 case ERROR_NO_MORE_SEARCH_HANDLES: error = EIO; break;
87 case ERROR_NO_PROC_SLOTS: error = EAGAIN; break;
88 case ERROR_NO_SUCH_PRIVILEGE: error = EACCES; break;
89 case ERROR_OPEN_FAILED: error = EIO; break;
90 case ERROR_OPEN_FILES: error = EBUSY; break;
91 case ERROR_OPERATION_ABORTED: error = EINTR; break;
92 case ERROR_OUTOFMEMORY: error = ENOMEM; break;
93 case ERROR_PASSWORD_EXPIRED: error = EACCES; break;
94 case ERROR_PATH_BUSY: error = EBUSY; break;
95 case ERROR_PATH_NOT_FOUND: error = ENOENT; break;
96 case ERROR_PIPE_BUSY: error = EBUSY; break;
97 case ERROR_PIPE_CONNECTED: error = EPIPE; break;
98 case ERROR_PIPE_LISTENING: error = EPIPE; break;
99 case ERROR_PIPE_NOT_CONNECTED: error = EPIPE; break;
100 case ERROR_PRIVILEGE_NOT_HELD: error = EACCES; break;
101 case ERROR_READ_FAULT: error = EIO; break;
102 case ERROR_SEEK: error = EIO; break;
103 case ERROR_SEEK_ON_DEVICE: error = ESPIPE; break;
104 case ERROR_SHARING_BUFFER_EXCEEDED: error = ENFILE; break;
105 case ERROR_SHARING_VIOLATION: error = EACCES; break;
106 case ERROR_STACK_OVERFLOW: error = ENOMEM; break;
107 case ERROR_SWAPERROR: error = ENOENT; break;
108 case ERROR_TOO_MANY_MODULES: error = EMFILE; break;
109 case ERROR_TOO_MANY_OPEN_FILES: error = EMFILE; break;
110 case ERROR_UNRECOGNIZED_MEDIA: error = ENXIO; break;
111 case ERROR_UNRECOGNIZED_VOLUME: error = ENODEV; break;
112 case ERROR_WAIT_NO_CHILDREN: error = ECHILD; break;
113 case ERROR_WRITE_FAULT: error = EIO; break;
114 case ERROR_WRITE_PROTECT: error = EROFS; break;
120 int mingw_open (const char *filename, int oflags, ...)
126 va_start(args, oflags);
127 mode = va_arg(args, int);
130 if (!strcmp(filename, "/dev/null"))
133 fd = open(filename, oflags, mode);
135 if (fd < 0 && (oflags & O_CREAT) && errno == EACCES) {
136 DWORD attrs = GetFileAttributes(filename);
137 if (attrs != INVALID_FILE_ATTRIBUTES && (attrs & FILE_ATTRIBUTE_DIRECTORY))
144 FILE *mingw_fopen (const char *filename, const char *otype)
146 if (!strcmp(filename, "/dev/null"))
148 return fopen(filename, otype);
152 FILE *mingw_freopen (const char *filename, const char *otype, FILE *stream)
154 if (filename && !strcmp(filename, "/dev/null"))
156 return freopen(filename, otype, stream);
160 * The unit of FILETIME is 100-nanoseconds since January 1, 1601, UTC.
161 * Returns the 100-nanoseconds ("hekto nanoseconds") since the epoch.
163 static inline long long filetime_to_hnsec(const FILETIME *ft)
165 long long winTime = ((long long)ft->dwHighDateTime << 32) + ft->dwLowDateTime;
166 /* Windows to Unix Epoch conversion */
167 return winTime - 116444736000000000LL;
170 static inline time_t filetime_to_time_t(const FILETIME *ft)
172 return (time_t)(filetime_to_hnsec(ft) / 10000000);
175 /* We keep the do_lstat code in a separate function to avoid recursion.
176 * When a path ends with a slash, the stat will fail with ENOENT. In
177 * this case, we strip the trailing slashes and stat again.
179 static int do_lstat(const char *file_name, struct stat *buf)
181 WIN32_FILE_ATTRIBUTE_DATA fdata;
183 if (!(errno = get_file_attr(file_name, &fdata))) {
188 buf->st_mode = file_attr_to_st_mode(fdata.dwFileAttributes);
189 buf->st_size = fdata.nFileSizeLow |
190 (((off_t)fdata.nFileSizeHigh)<<32);
191 buf->st_dev = buf->st_rdev = 0; /* not used by Git */
192 buf->st_atime = filetime_to_time_t(&(fdata.ftLastAccessTime));
193 buf->st_mtime = filetime_to_time_t(&(fdata.ftLastWriteTime));
194 buf->st_ctime = filetime_to_time_t(&(fdata.ftCreationTime));
200 /* We provide our own lstat/fstat functions, since the provided
201 * lstat/fstat functions are so slow. These stat functions are
202 * tailored for Git's usage (read: fast), and are not meant to be
203 * complete. Note that Git stat()s are redirected to mingw_lstat()
204 * too, since Windows doesn't really handle symlinks that well.
206 int mingw_lstat(const char *file_name, struct stat *buf)
209 static char alt_name[PATH_MAX];
211 if (!do_lstat(file_name, buf))
214 /* if file_name ended in a '/', Windows returned ENOENT;
215 * try again without trailing slashes
220 namelen = strlen(file_name);
221 if (namelen && file_name[namelen-1] != '/')
223 while (namelen && file_name[namelen-1] == '/')
225 if (!namelen || namelen >= PATH_MAX)
228 memcpy(alt_name, file_name, namelen);
229 alt_name[namelen] = 0;
230 return do_lstat(alt_name, buf);
234 int mingw_fstat(int fd, struct stat *buf)
236 HANDLE fh = (HANDLE)_get_osfhandle(fd);
237 BY_HANDLE_FILE_INFORMATION fdata;
239 if (fh == INVALID_HANDLE_VALUE) {
243 /* direct non-file handles to MS's fstat() */
244 if (GetFileType(fh) != FILE_TYPE_DISK)
245 return _fstati64(fd, buf);
247 if (GetFileInformationByHandle(fh, &fdata)) {
252 buf->st_mode = file_attr_to_st_mode(fdata.dwFileAttributes);
253 buf->st_size = fdata.nFileSizeLow |
254 (((off_t)fdata.nFileSizeHigh)<<32);
255 buf->st_dev = buf->st_rdev = 0; /* not used by Git */
256 buf->st_atime = filetime_to_time_t(&(fdata.ftLastAccessTime));
257 buf->st_mtime = filetime_to_time_t(&(fdata.ftLastWriteTime));
258 buf->st_ctime = filetime_to_time_t(&(fdata.ftCreationTime));
265 static inline void time_t_to_filetime(time_t t, FILETIME *ft)
267 long long winTime = t * 10000000LL + 116444736000000000LL;
268 ft->dwLowDateTime = winTime;
269 ft->dwHighDateTime = winTime >> 32;
272 int mingw_utime (const char *file_name, const struct utimbuf *times)
277 /* must have write permission */
278 DWORD attrs = GetFileAttributes(file_name);
279 if (attrs != INVALID_FILE_ATTRIBUTES &&
280 (attrs & FILE_ATTRIBUTE_READONLY)) {
281 /* ignore errors here; open() will report them */
282 SetFileAttributes(file_name, attrs & ~FILE_ATTRIBUTE_READONLY);
285 if ((fh = open(file_name, O_RDWR | O_BINARY)) < 0) {
290 time_t_to_filetime(times->modtime, &mft);
291 time_t_to_filetime(times->actime, &aft);
292 if (!SetFileTime((HANDLE)_get_osfhandle(fh), NULL, &aft, &mft)) {
300 if (attrs != INVALID_FILE_ATTRIBUTES &&
301 (attrs & FILE_ATTRIBUTE_READONLY)) {
302 /* ignore errors again */
303 SetFileAttributes(file_name, attrs);
308 unsigned int sleep (unsigned int seconds)
314 int mkstemp(char *template)
316 char *filename = mktemp(template);
317 if (filename == NULL)
319 return open(filename, O_RDWR | O_CREAT, 0600);
322 int gettimeofday(struct timeval *tv, void *tz)
327 GetSystemTimeAsFileTime(&ft);
328 hnsec = filetime_to_hnsec(&ft);
329 tv->tv_sec = hnsec / 10000000;
330 tv->tv_usec = (hnsec % 10000000) / 10;
334 int pipe(int filedes[2])
338 /* this creates non-inheritable handles */
339 if (!CreatePipe(&h[0], &h[1], NULL, 8192)) {
340 errno = err_win_to_posix(GetLastError());
343 filedes[0] = _open_osfhandle((int)h[0], O_NOINHERIT);
344 if (filedes[0] < 0) {
349 filedes[1] = _open_osfhandle((int)h[1], O_NOINHERIT);
350 if (filedes[0] < 0) {
358 int poll(struct pollfd *ufds, unsigned int nfds, int timeout)
367 return errno = EINVAL, error("poll timeout not supported");
370 /* When there is only one fd to wait for, then we pretend that
371 * input is available and let the actual wait happen when the
372 * caller invokes read().
375 if (!(ufds[0].events & POLLIN))
376 return errno = EINVAL, error("POLLIN not set");
377 ufds[0].revents = POLLIN;
383 for (i = 0; i < nfds; i++) {
385 HANDLE h = (HANDLE) _get_osfhandle(ufds[i].fd);
386 if (h == INVALID_HANDLE_VALUE)
387 return -1; /* errno was set */
389 if (!(ufds[i].events & POLLIN))
390 return errno = EINVAL, error("POLLIN not set");
392 /* this emulation works only for pipes */
393 if (!PeekNamedPipe(h, NULL, 0, NULL, &avail, NULL)) {
394 int err = GetLastError();
395 if (err == ERROR_BROKEN_PIPE) {
396 ufds[i].revents = POLLHUP;
400 return error("PeekNamedPipe failed,"
401 " GetLastError: %u", err);
404 ufds[i].revents = POLLIN;
410 /* The only times that we spin here is when the process
411 * that is connected through the pipes is waiting for
412 * its own input data to become available. But since
413 * the process (pack-objects) is itself CPU intensive,
414 * it will happily pick up the time slice that we are
415 * relinquishing here.
423 struct tm *gmtime_r(const time_t *timep, struct tm *result)
425 /* gmtime() in MSVCRT.DLL is thread-safe, but not reentrant */
426 memcpy(result, gmtime(timep), sizeof(struct tm));
430 struct tm *localtime_r(const time_t *timep, struct tm *result)
432 /* localtime() in MSVCRT.DLL is thread-safe, but not reentrant */
433 memcpy(result, localtime(timep), sizeof(struct tm));
438 char *mingw_getcwd(char *pointer, int len)
441 char *ret = getcwd(pointer, len);
444 for (i = 0; pointer[i]; i++)
445 if (pointer[i] == '\\')
451 char *mingw_getenv(const char *name)
453 char *result = getenv(name);
454 if (!result && !strcmp(name, "TMPDIR")) {
455 /* on Windows it is TMP and TEMP */
456 result = getenv("TMP");
458 result = getenv("TEMP");
464 * See http://msdn2.microsoft.com/en-us/library/17w5ykft(vs.71).aspx
465 * (Parsing C++ Command-Line Arguments)
467 static const char *quote_arg(const char *arg)
469 /* count chars to quote */
471 int force_quotes = 0;
474 if (!*p) force_quotes = 1;
476 if (isspace(*p) || *p == '*' || *p == '?' || *p == '{' || *p == '\'')
480 else if (*p == '\\') {
494 if (!force_quotes && n == 0)
497 /* insert \ where necessary */
498 d = q = xmalloc(len+n+3);
503 else if (*arg == '\\') {
505 while (*arg == '\\') {
522 static const char *parse_interpreter(const char *cmd)
524 static char buf[100];
528 /* don't even try a .exe */
530 if (n >= 4 && !strcasecmp(cmd+n-4, ".exe"))
533 fd = open(cmd, O_RDONLY);
536 n = read(fd, buf, sizeof(buf)-1);
538 if (n < 4) /* at least '#!/x' and not error */
541 if (buf[0] != '#' || buf[1] != '!')
544 p = buf + strcspn(buf, "\r\n");
549 if (!(p = strrchr(buf+2, '/')) && !(p = strrchr(buf+2, '\\')))
552 if ((opt = strchr(p+1, ' ')))
558 * Splits the PATH into parts.
560 static char **get_path_split(void)
562 char *p, **path, *envpath = getenv("PATH");
565 if (!envpath || !*envpath)
568 envpath = xstrdup(envpath);
574 if (*dir) { /* not earlier, catches series of ; */
581 path = xmalloc((n+1)*sizeof(char *));
586 path[i++] = xstrdup(p);
596 static void free_path_split(char **path)
609 * exe_only means that we only want to detect .exe files, but not scripts
610 * (which do not have an extension)
612 static char *lookup_prog(const char *dir, const char *cmd, int isexe, int exe_only)
615 snprintf(path, sizeof(path), "%s/%s.exe", dir, cmd);
617 if (!isexe && access(path, F_OK) == 0)
618 return xstrdup(path);
619 path[strlen(path)-4] = '\0';
620 if ((!exe_only || isexe) && access(path, F_OK) == 0)
621 if (!(GetFileAttributes(path) & FILE_ATTRIBUTE_DIRECTORY))
622 return xstrdup(path);
627 * Determines the absolute path of cmd using the the split path in path.
628 * If cmd contains a slash or backslash, no lookup is performed.
630 static char *path_lookup(const char *cmd, char **path, int exe_only)
633 int len = strlen(cmd);
634 int isexe = len >= 4 && !strcasecmp(cmd+len-4, ".exe");
636 if (strchr(cmd, '/') || strchr(cmd, '\\'))
639 while (!prog && *path)
640 prog = lookup_prog(*path++, cmd, isexe, exe_only);
645 static int env_compare(const void *a, const void *b)
649 return strcasecmp(*ea, *eb);
652 static pid_t mingw_spawnve_fd(const char *cmd, const char **argv, char **env,
654 int prepend_cmd, int fhin, int fhout, int fherr)
657 PROCESS_INFORMATION pi;
658 struct strbuf envblk, args;
662 /* Determine whether or not we are associated to a console */
663 HANDLE cons = CreateFile("CONOUT$", GENERIC_WRITE,
664 FILE_SHARE_WRITE, NULL, OPEN_EXISTING,
665 FILE_ATTRIBUTE_NORMAL, NULL);
666 if (cons == INVALID_HANDLE_VALUE) {
667 /* There is no console associated with this process.
668 * Since the child is a console process, Windows
669 * would normally create a console window. But
670 * since we'll be redirecting std streams, we do
671 * not need the console.
672 * It is necessary to use DETACHED_PROCESS
673 * instead of CREATE_NO_WINDOW to make ssh
674 * recognize that it has no console.
676 flags = DETACHED_PROCESS;
678 /* There is already a console. If we specified
679 * DETACHED_PROCESS here, too, Windows would
680 * disassociate the child from the console.
681 * The same is true for CREATE_NO_WINDOW.
687 memset(&si, 0, sizeof(si));
689 si.dwFlags = STARTF_USESTDHANDLES;
690 si.hStdInput = (HANDLE) _get_osfhandle(fhin);
691 si.hStdOutput = (HANDLE) _get_osfhandle(fhout);
692 si.hStdError = (HANDLE) _get_osfhandle(fherr);
694 /* concatenate argv, quoting args as we go */
695 strbuf_init(&args, 0);
697 char *quoted = (char *)quote_arg(cmd);
698 strbuf_addstr(&args, quoted);
702 for (; *argv; argv++) {
703 char *quoted = (char *)quote_arg(*argv);
705 strbuf_addch(&args, ' ');
706 strbuf_addstr(&args, quoted);
713 char **e, **sorted_env;
715 for (e = env; *e; e++)
718 /* environment must be sorted */
719 sorted_env = xmalloc(sizeof(*sorted_env) * (count + 1));
720 memcpy(sorted_env, env, sizeof(*sorted_env) * (count + 1));
721 qsort(sorted_env, count, sizeof(*sorted_env), env_compare);
723 strbuf_init(&envblk, 0);
724 for (e = sorted_env; *e; e++) {
725 strbuf_addstr(&envblk, *e);
726 strbuf_addch(&envblk, '\0');
731 memset(&pi, 0, sizeof(pi));
732 ret = CreateProcess(cmd, args.buf, NULL, NULL, TRUE, flags,
733 env ? envblk.buf : NULL, dir, &si, &pi);
736 strbuf_release(&envblk);
737 strbuf_release(&args);
743 CloseHandle(pi.hThread);
744 return (pid_t)pi.hProcess;
747 static pid_t mingw_spawnve(const char *cmd, const char **argv, char **env,
750 return mingw_spawnve_fd(cmd, argv, env, NULL, prepend_cmd, 0, 1, 2);
753 pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **env,
755 int fhin, int fhout, int fherr)
758 char **path = get_path_split();
759 char *prog = path_lookup(cmd, path, 0);
766 const char *interpr = parse_interpreter(prog);
769 const char *argv0 = argv[0];
770 char *iprog = path_lookup(interpr, path, 1);
777 pid = mingw_spawnve_fd(iprog, argv, env, dir, 1,
784 pid = mingw_spawnve_fd(prog, argv, env, dir, 0,
788 free_path_split(path);
792 static int try_shell_exec(const char *cmd, char *const *argv, char **env)
794 const char *interpr = parse_interpreter(cmd);
801 path = get_path_split();
802 prog = path_lookup(interpr, path, 1);
806 while (argv[argc]) argc++;
807 argv2 = xmalloc(sizeof(*argv) * (argc+1));
808 argv2[0] = (char *)cmd; /* full path to the script file */
809 memcpy(&argv2[1], &argv[1], sizeof(*argv) * argc);
810 pid = mingw_spawnve(prog, argv2, env, 1);
813 if (waitpid(pid, &status, 0) < 0)
817 pid = 1; /* indicate that we tried but failed */
821 free_path_split(path);
825 static void mingw_execve(const char *cmd, char *const *argv, char *const *env)
827 /* check if git_command is a shell script */
828 if (!try_shell_exec(cmd, argv, (char **)env)) {
831 pid = mingw_spawnve(cmd, (const char **)argv, (char **)env, 0);
834 if (waitpid(pid, &status, 0) < 0)
840 void mingw_execvp(const char *cmd, char *const *argv)
842 char **path = get_path_split();
843 char *prog = path_lookup(cmd, path, 0);
846 mingw_execve(prog, argv, environ);
851 free_path_split(path);
854 static char **copy_environ(void)
860 env = xmalloc((i+1)*sizeof(*env));
861 for (i = 0; environ[i]; i++)
862 env[i] = xstrdup(environ[i]);
867 void free_environ(char **env)
870 for (i = 0; env[i]; i++)
875 static int lookup_env(char **env, const char *name, size_t nmln)
879 for (i = 0; env[i]; i++) {
880 if (0 == strncmp(env[i], name, nmln)
881 && '=' == env[i][nmln])
889 * If name contains '=', then sets the variable, otherwise it unsets it
891 static char **env_setenv(char **env, const char *name)
893 char *eq = strchrnul(name, '=');
894 int i = lookup_env(env, name, eq-name);
898 for (i = 0; env[i]; i++)
900 env = xrealloc(env, (i+2)*sizeof(*env));
901 env[i] = xstrdup(name);
908 env[i] = xstrdup(name);
917 * Copies global environ and adjusts variables as specified by vars.
919 char **make_augmented_environ(const char *const *vars)
921 char **env = copy_environ();
924 env = env_setenv(env, *vars++);
929 * Note, this isn't a complete replacement for getaddrinfo. It assumes
930 * that service contains a numerical port, or that it it is null. It
931 * does a simple search using gethostbyname, and returns one IPv4 host
934 static int WSAAPI getaddrinfo_stub(const char *node, const char *service,
935 const struct addrinfo *hints,
936 struct addrinfo **res)
938 struct hostent *h = gethostbyname(node);
940 struct sockaddr_in *sin;
943 return WSAGetLastError();
945 ai = xmalloc(sizeof(struct addrinfo));
948 ai->ai_family = AF_INET;
949 ai->ai_socktype = hints->ai_socktype;
950 switch (hints->ai_socktype) {
952 ai->ai_protocol = IPPROTO_TCP;
955 ai->ai_protocol = IPPROTO_UDP;
961 ai->ai_addrlen = sizeof(struct sockaddr_in);
962 ai->ai_canonname = strdup(h->h_name);
964 sin = xmalloc(ai->ai_addrlen);
965 memset(sin, 0, ai->ai_addrlen);
966 sin->sin_family = AF_INET;
968 sin->sin_port = htons(atoi(service));
969 sin->sin_addr = *(struct in_addr *)h->h_addr;
970 ai->ai_addr = (struct sockaddr *)sin;
975 static void WSAAPI freeaddrinfo_stub(struct addrinfo *res)
977 free(res->ai_canonname);
982 static int WSAAPI getnameinfo_stub(const struct sockaddr *sa, socklen_t salen,
983 char *host, DWORD hostlen,
984 char *serv, DWORD servlen, int flags)
986 const struct sockaddr_in *sin = (const struct sockaddr_in *)sa;
987 if (sa->sa_family != AF_INET)
992 if (host && hostlen > 0) {
993 struct hostent *ent = NULL;
994 if (!(flags & NI_NUMERICHOST))
995 ent = gethostbyaddr((const char *)&sin->sin_addr,
996 sizeof(sin->sin_addr), AF_INET);
999 snprintf(host, hostlen, "%s", ent->h_name);
1000 else if (flags & NI_NAMEREQD)
1003 snprintf(host, hostlen, "%s", inet_ntoa(sin->sin_addr));
1006 if (serv && servlen > 0) {
1007 struct servent *ent = NULL;
1008 if (!(flags & NI_NUMERICSERV))
1009 ent = getservbyport(sin->sin_port,
1010 flags & NI_DGRAM ? "udp" : "tcp");
1013 snprintf(serv, servlen, "%s", ent->s_name);
1015 snprintf(serv, servlen, "%d", ntohs(sin->sin_port));
1021 static HMODULE ipv6_dll = NULL;
1022 static void (WSAAPI *ipv6_freeaddrinfo)(struct addrinfo *res);
1023 static int (WSAAPI *ipv6_getaddrinfo)(const char *node, const char *service,
1024 const struct addrinfo *hints,
1025 struct addrinfo **res);
1026 static int (WSAAPI *ipv6_getnameinfo)(const struct sockaddr *sa, socklen_t salen,
1027 char *host, DWORD hostlen,
1028 char *serv, DWORD servlen, int flags);
1030 * gai_strerror is an inline function in the ws2tcpip.h header, so we
1031 * don't need to try to load that one dynamically.
1034 static void socket_cleanup(void)
1038 FreeLibrary(ipv6_dll);
1040 ipv6_freeaddrinfo = freeaddrinfo_stub;
1041 ipv6_getaddrinfo = getaddrinfo_stub;
1042 ipv6_getnameinfo = getnameinfo_stub;
1045 static void ensure_socket_initialization(void)
1048 static int initialized = 0;
1049 const char *libraries[] = { "ws2_32.dll", "wship6.dll", NULL };
1055 if (WSAStartup(MAKEWORD(2,2), &wsa))
1056 die("unable to initialize winsock subsystem, error %d",
1059 for (name = libraries; *name; name++) {
1060 ipv6_dll = LoadLibrary(*name);
1064 ipv6_freeaddrinfo = (void (WSAAPI *)(struct addrinfo *))
1065 GetProcAddress(ipv6_dll, "freeaddrinfo");
1066 ipv6_getaddrinfo = (int (WSAAPI *)(const char *, const char *,
1067 const struct addrinfo *,
1068 struct addrinfo **))
1069 GetProcAddress(ipv6_dll, "getaddrinfo");
1070 ipv6_getnameinfo = (int (WSAAPI *)(const struct sockaddr *,
1071 socklen_t, char *, DWORD,
1072 char *, DWORD, int))
1073 GetProcAddress(ipv6_dll, "getnameinfo");
1074 if (!ipv6_freeaddrinfo || !ipv6_getaddrinfo || !ipv6_getnameinfo) {
1075 FreeLibrary(ipv6_dll);
1080 if (!ipv6_freeaddrinfo || !ipv6_getaddrinfo || !ipv6_getnameinfo) {
1081 ipv6_freeaddrinfo = freeaddrinfo_stub;
1082 ipv6_getaddrinfo = getaddrinfo_stub;
1083 ipv6_getnameinfo = getnameinfo_stub;
1086 atexit(socket_cleanup);
1090 #undef gethostbyname
1091 struct hostent *mingw_gethostbyname(const char *host)
1093 ensure_socket_initialization();
1094 return gethostbyname(host);
1097 void mingw_freeaddrinfo(struct addrinfo *res)
1099 ipv6_freeaddrinfo(res);
1102 int mingw_getaddrinfo(const char *node, const char *service,
1103 const struct addrinfo *hints, struct addrinfo **res)
1105 ensure_socket_initialization();
1106 return ipv6_getaddrinfo(node, service, hints, res);
1109 int mingw_getnameinfo(const struct sockaddr *sa, socklen_t salen,
1110 char *host, DWORD hostlen, char *serv, DWORD servlen,
1113 ensure_socket_initialization();
1114 return ipv6_getnameinfo(sa, salen, host, hostlen, serv, servlen, flags);
1117 int mingw_socket(int domain, int type, int protocol)
1120 SOCKET s = WSASocket(domain, type, protocol, NULL, 0, 0);
1121 if (s == INVALID_SOCKET) {
1123 * WSAGetLastError() values are regular BSD error codes
1124 * biased by WSABASEERR.
1125 * However, strerror() does not know about networking
1126 * specific errors, which are values beginning at 38 or so.
1127 * Therefore, we choose to leave the biased error code
1128 * in errno so that _if_ someone looks up the code somewhere,
1129 * then it is at least the number that are usually listed.
1131 errno = WSAGetLastError();
1134 /* convert into a file descriptor */
1135 if ((sockfd = _open_osfhandle(s, O_RDWR|O_BINARY)) < 0) {
1137 return error("unable to make a socket file descriptor: %s",
1144 int mingw_connect(int sockfd, struct sockaddr *sa, size_t sz)
1146 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
1147 return connect(s, sa, sz);
1151 int mingw_rename(const char *pold, const char *pnew)
1155 static const int delay[] = { 0, 1, 10, 20, 40 };
1158 * Try native rename() first to get errno right.
1159 * It is based on MoveFile(), which cannot overwrite existing files.
1161 if (!rename(pold, pnew))
1163 if (errno != EEXIST)
1166 if (MoveFileEx(pold, pnew, MOVEFILE_REPLACE_EXISTING))
1168 /* TODO: translate more errors */
1169 gle = GetLastError();
1170 if (gle == ERROR_ACCESS_DENIED &&
1171 (attrs = GetFileAttributes(pnew)) != INVALID_FILE_ATTRIBUTES) {
1172 if (attrs & FILE_ATTRIBUTE_DIRECTORY) {
1176 if ((attrs & FILE_ATTRIBUTE_READONLY) &&
1177 SetFileAttributes(pnew, attrs & ~FILE_ATTRIBUTE_READONLY)) {
1178 if (MoveFileEx(pold, pnew, MOVEFILE_REPLACE_EXISTING))
1180 gle = GetLastError();
1181 /* revert file attributes on failure */
1182 SetFileAttributes(pnew, attrs);
1185 if (tries < ARRAY_SIZE(delay) && gle == ERROR_ACCESS_DENIED) {
1187 * We assume that some other process had the source or
1188 * destination file open at the wrong moment and retry.
1189 * In order to give the other process a higher chance to
1190 * complete its operation, we give up our time slice now.
1191 * If we have to retry again, we do sleep a bit.
1193 Sleep(delay[tries]);
1202 * Note that this doesn't return the actual pagesize, but
1203 * the allocation granularity. If future Windows specific git code
1204 * needs the real getpagesize function, we need to find another solution.
1206 int mingw_getpagesize(void)
1210 return si.dwAllocationGranularity;
1213 struct passwd *getpwuid(int uid)
1215 static char user_name[100];
1216 static struct passwd p;
1218 DWORD len = sizeof(user_name);
1219 if (!GetUserName(user_name, &len))
1221 p.pw_name = user_name;
1222 p.pw_gecos = "unknown";
1227 static HANDLE timer_event;
1228 static HANDLE timer_thread;
1229 static int timer_interval;
1230 static int one_shot;
1231 static sig_handler_t timer_fn = SIG_DFL;
1233 /* The timer works like this:
1234 * The thread, ticktack(), is a trivial routine that most of the time
1235 * only waits to receive the signal to terminate. The main thread tells
1236 * the thread to terminate by setting the timer_event to the signalled
1238 * But ticktack() interrupts the wait state after the timer's interval
1239 * length to call the signal handler.
1242 static unsigned __stdcall ticktack(void *dummy)
1244 while (WaitForSingleObject(timer_event, timer_interval) == WAIT_TIMEOUT) {
1245 if (timer_fn == SIG_DFL)
1247 if (timer_fn != SIG_IGN)
1255 static int start_timer_thread(void)
1257 timer_event = CreateEvent(NULL, FALSE, FALSE, NULL);
1259 timer_thread = (HANDLE) _beginthreadex(NULL, 0, ticktack, NULL, 0, NULL);
1261 return errno = ENOMEM,
1262 error("cannot start timer thread");
1264 return errno = ENOMEM,
1265 error("cannot allocate resources for timer");
1269 static void stop_timer_thread(void)
1272 SetEvent(timer_event); /* tell thread to terminate */
1274 int rc = WaitForSingleObject(timer_thread, 1000);
1275 if (rc == WAIT_TIMEOUT)
1276 error("timer thread did not terminate timely");
1277 else if (rc != WAIT_OBJECT_0)
1278 error("waiting for timer thread failed: %lu",
1280 CloseHandle(timer_thread);
1283 CloseHandle(timer_event);
1285 timer_thread = NULL;
1288 static inline int is_timeval_eq(const struct timeval *i1, const struct timeval *i2)
1290 return i1->tv_sec == i2->tv_sec && i1->tv_usec == i2->tv_usec;
1293 int setitimer(int type, struct itimerval *in, struct itimerval *out)
1295 static const struct timeval zero;
1296 static int atexit_done;
1299 return errno = EINVAL,
1300 error("setitimer param 3 != NULL not implemented");
1301 if (!is_timeval_eq(&in->it_interval, &zero) &&
1302 !is_timeval_eq(&in->it_interval, &in->it_value))
1303 return errno = EINVAL,
1304 error("setitimer: it_interval must be zero or eq it_value");
1307 stop_timer_thread();
1309 if (is_timeval_eq(&in->it_value, &zero) &&
1310 is_timeval_eq(&in->it_interval, &zero))
1313 timer_interval = in->it_value.tv_sec * 1000 + in->it_value.tv_usec / 1000;
1314 one_shot = is_timeval_eq(&in->it_interval, &zero);
1316 atexit(stop_timer_thread);
1319 return start_timer_thread();
1322 int sigaction(int sig, struct sigaction *in, struct sigaction *out)
1325 return errno = EINVAL,
1326 error("sigaction only implemented for SIGALRM");
1328 return errno = EINVAL,
1329 error("sigaction: param 3 != NULL not implemented");
1331 timer_fn = in->sa_handler;
1336 sig_handler_t mingw_signal(int sig, sig_handler_t handler)
1338 sig_handler_t old = timer_fn;
1340 return signal(sig, handler);
1345 static const char *make_backslash_path(const char *path)
1347 static char buf[PATH_MAX + 1];
1350 if (strlcpy(buf, path, PATH_MAX) >= PATH_MAX)
1351 die("Too long path: %.*s", 60, path);
1353 for (c = buf; *c; c++) {
1360 void mingw_open_html(const char *unixpath)
1362 const char *htmlpath = make_backslash_path(unixpath);
1363 typedef HINSTANCE (WINAPI *T)(HWND, const char *,
1364 const char *, const char *, const char *, INT);
1368 shell32 = LoadLibrary("shell32.dll");
1370 die("cannot load shell32.dll");
1371 ShellExecute = (T)GetProcAddress(shell32, "ShellExecuteA");
1373 die("cannot run browser");
1375 printf("Launching default browser to display HTML ...\n");
1376 ShellExecute(NULL, "open", htmlpath, NULL, "\\", 0);
1378 FreeLibrary(shell32);
1381 int link(const char *oldpath, const char *newpath)
1383 typedef BOOL (WINAPI *T)(const char*, const char*, LPSECURITY_ATTRIBUTES);
1384 static T create_hard_link = NULL;
1385 if (!create_hard_link) {
1386 create_hard_link = (T) GetProcAddress(
1387 GetModuleHandle("kernel32.dll"), "CreateHardLinkA");
1388 if (!create_hard_link)
1389 create_hard_link = (T)-1;
1391 if (create_hard_link == (T)-1) {
1395 if (!create_hard_link(newpath, oldpath, NULL)) {
1396 errno = err_win_to_posix(GetLastError());
1402 char *getpass(const char *prompt)
1404 struct strbuf buf = STRBUF_INIT;
1406 fputs(prompt, stderr);
1409 if (c == '\r' || c == '\n')
1411 strbuf_addch(&buf, c);
1413 fputs("\n", stderr);
1414 return strbuf_detach(&buf, NULL);
1417 #ifndef NO_MINGW_REPLACE_READDIR
1418 /* MinGW readdir implementation to avoid extra lstats for Git */
1421 struct _finddata_t dd_dta; /* disk transfer area for this dir */
1422 struct mingw_dirent dd_dir; /* Our own implementation, including d_type */
1423 long dd_handle; /* _findnext handle */
1424 int dd_stat; /* 0 = next entry to read is first entry, -1 = off the end, positive = 0 based index of next entry */
1425 char dd_name[1]; /* given path for dir with search pattern (struct is extended) */
1428 struct dirent *mingw_readdir(DIR *dir)
1430 WIN32_FIND_DATAA buf;
1432 struct mingw_DIR *mdir = (struct mingw_DIR*)dir;
1434 if (!dir->dd_handle) {
1435 errno = EBADF; /* No set_errno for mingw */
1439 if (dir->dd_handle == (long)INVALID_HANDLE_VALUE && dir->dd_stat == 0)
1442 handle = FindFirstFileA(dir->dd_name, &buf);
1443 lasterr = GetLastError();
1444 dir->dd_handle = (long)handle;
1445 if (handle == INVALID_HANDLE_VALUE && (lasterr != ERROR_NO_MORE_FILES)) {
1446 errno = err_win_to_posix(lasterr);
1449 } else if (dir->dd_handle == (long)INVALID_HANDLE_VALUE) {
1451 } else if (!FindNextFileA((HANDLE)dir->dd_handle, &buf)) {
1452 DWORD lasterr = GetLastError();
1453 FindClose((HANDLE)dir->dd_handle);
1454 dir->dd_handle = (long)INVALID_HANDLE_VALUE;
1455 /* POSIX says you shouldn't set errno when readdir can't
1456 find any more files; so, if another error we leave it set. */
1457 if (lasterr != ERROR_NO_MORE_FILES)
1458 errno = err_win_to_posix(lasterr);
1462 /* We get here if `buf' contains valid data. */
1463 strcpy(dir->dd_dir.d_name, buf.cFileName);
1466 /* Set file type, based on WIN32_FIND_DATA */
1467 mdir->dd_dir.d_type = 0;
1468 if (buf.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
1469 mdir->dd_dir.d_type |= DT_DIR;
1471 mdir->dd_dir.d_type |= DT_REG;
1473 return (struct dirent*)&dir->dd_dir;
1475 #endif // !NO_MINGW_REPLACE_READDIR