Merge branch 'rj/maint-test-fixes' into maint
[git/dscho.git] / compat / mingw.c
blobb98e6000062134f01a0611fb17a3fd43250f7989
1 #include "../git-compat-util.h"
2 #include "win32.h"
3 #include <conio.h>
4 #include "../strbuf.h"
6 int err_win_to_posix(DWORD winerr)
8 int error = ENOSYS;
9 switch(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;
116 return error;
119 #undef open
120 int mingw_open (const char *filename, int oflags, ...)
122 va_list args;
123 unsigned mode;
124 int fd;
126 va_start(args, oflags);
127 mode = va_arg(args, int);
128 va_end(args);
130 if (!strcmp(filename, "/dev/null"))
131 filename = "nul";
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))
138 errno = EISDIR;
140 return fd;
143 #undef write
144 ssize_t mingw_write(int fd, const void *buf, size_t count)
147 * While write() calls to a file on a local disk are translated
148 * into WriteFile() calls with a maximum size of 64KB on Windows
149 * XP and 256KB on Vista, no such cap is placed on writes to
150 * files over the network on Windows XP. Unfortunately, there
151 * seems to be a limit of 32MB-28KB on X64 and 64MB-32KB on x86;
152 * bigger writes fail on Windows XP.
153 * So we cap to a nice 31MB here to avoid write failures over
154 * the net without changing the number of WriteFile() calls in
155 * the local case.
157 return write(fd, buf, min(count, 31 * 1024 * 1024));
160 #undef fopen
161 FILE *mingw_fopen (const char *filename, const char *otype)
163 if (!strcmp(filename, "/dev/null"))
164 filename = "nul";
165 return fopen(filename, otype);
168 #undef freopen
169 FILE *mingw_freopen (const char *filename, const char *otype, FILE *stream)
171 if (filename && !strcmp(filename, "/dev/null"))
172 filename = "nul";
173 return freopen(filename, otype, stream);
177 * The unit of FILETIME is 100-nanoseconds since January 1, 1601, UTC.
178 * Returns the 100-nanoseconds ("hekto nanoseconds") since the epoch.
180 static inline long long filetime_to_hnsec(const FILETIME *ft)
182 long long winTime = ((long long)ft->dwHighDateTime << 32) + ft->dwLowDateTime;
183 /* Windows to Unix Epoch conversion */
184 return winTime - 116444736000000000LL;
187 static inline time_t filetime_to_time_t(const FILETIME *ft)
189 return (time_t)(filetime_to_hnsec(ft) / 10000000);
192 /* We keep the do_lstat code in a separate function to avoid recursion.
193 * When a path ends with a slash, the stat will fail with ENOENT. In
194 * this case, we strip the trailing slashes and stat again.
196 static int do_lstat(const char *file_name, struct stat *buf)
198 int err;
199 WIN32_FILE_ATTRIBUTE_DATA fdata;
201 if (!(err = get_file_attr(file_name, &fdata))) {
202 buf->st_ino = 0;
203 buf->st_gid = 0;
204 buf->st_uid = 0;
205 buf->st_nlink = 1;
206 buf->st_mode = file_attr_to_st_mode(fdata.dwFileAttributes);
207 buf->st_size = fdata.nFileSizeLow |
208 (((off_t)fdata.nFileSizeHigh)<<32);
209 buf->st_dev = buf->st_rdev = 0; /* not used by Git */
210 buf->st_atime = filetime_to_time_t(&(fdata.ftLastAccessTime));
211 buf->st_mtime = filetime_to_time_t(&(fdata.ftLastWriteTime));
212 buf->st_ctime = filetime_to_time_t(&(fdata.ftCreationTime));
213 return 0;
215 errno = err;
216 return -1;
219 /* We provide our own lstat/fstat functions, since the provided
220 * lstat/fstat functions are so slow. These stat functions are
221 * tailored for Git's usage (read: fast), and are not meant to be
222 * complete. Note that Git stat()s are redirected to mingw_lstat()
223 * too, since Windows doesn't really handle symlinks that well.
225 int mingw_lstat(const char *file_name, struct stat *buf)
227 int namelen;
228 static char alt_name[PATH_MAX];
230 if (!do_lstat(file_name, buf))
231 return 0;
233 /* if file_name ended in a '/', Windows returned ENOENT;
234 * try again without trailing slashes
236 if (errno != ENOENT)
237 return -1;
239 namelen = strlen(file_name);
240 if (namelen && file_name[namelen-1] != '/')
241 return -1;
242 while (namelen && file_name[namelen-1] == '/')
243 --namelen;
244 if (!namelen || namelen >= PATH_MAX)
245 return -1;
247 memcpy(alt_name, file_name, namelen);
248 alt_name[namelen] = 0;
249 return do_lstat(alt_name, buf);
252 #undef fstat
253 int mingw_fstat(int fd, struct stat *buf)
255 HANDLE fh = (HANDLE)_get_osfhandle(fd);
256 BY_HANDLE_FILE_INFORMATION fdata;
258 if (fh == INVALID_HANDLE_VALUE) {
259 errno = EBADF;
260 return -1;
262 /* direct non-file handles to MS's fstat() */
263 if (GetFileType(fh) != FILE_TYPE_DISK)
264 return _fstati64(fd, buf);
266 if (GetFileInformationByHandle(fh, &fdata)) {
267 buf->st_ino = 0;
268 buf->st_gid = 0;
269 buf->st_uid = 0;
270 buf->st_nlink = 1;
271 buf->st_mode = file_attr_to_st_mode(fdata.dwFileAttributes);
272 buf->st_size = fdata.nFileSizeLow |
273 (((off_t)fdata.nFileSizeHigh)<<32);
274 buf->st_dev = buf->st_rdev = 0; /* not used by Git */
275 buf->st_atime = filetime_to_time_t(&(fdata.ftLastAccessTime));
276 buf->st_mtime = filetime_to_time_t(&(fdata.ftLastWriteTime));
277 buf->st_ctime = filetime_to_time_t(&(fdata.ftCreationTime));
278 return 0;
280 errno = EBADF;
281 return -1;
284 static inline void time_t_to_filetime(time_t t, FILETIME *ft)
286 long long winTime = t * 10000000LL + 116444736000000000LL;
287 ft->dwLowDateTime = winTime;
288 ft->dwHighDateTime = winTime >> 32;
291 int mingw_utime (const char *file_name, const struct utimbuf *times)
293 FILETIME mft, aft;
294 int fh, rc;
296 /* must have write permission */
297 DWORD attrs = GetFileAttributes(file_name);
298 if (attrs != INVALID_FILE_ATTRIBUTES &&
299 (attrs & FILE_ATTRIBUTE_READONLY)) {
300 /* ignore errors here; open() will report them */
301 SetFileAttributes(file_name, attrs & ~FILE_ATTRIBUTE_READONLY);
304 if ((fh = open(file_name, O_RDWR | O_BINARY)) < 0) {
305 rc = -1;
306 goto revert_attrs;
309 if (times) {
310 time_t_to_filetime(times->modtime, &mft);
311 time_t_to_filetime(times->actime, &aft);
312 } else {
313 GetSystemTimeAsFileTime(&mft);
314 aft = mft;
316 if (!SetFileTime((HANDLE)_get_osfhandle(fh), NULL, &aft, &mft)) {
317 errno = EINVAL;
318 rc = -1;
319 } else
320 rc = 0;
321 close(fh);
323 revert_attrs:
324 if (attrs != INVALID_FILE_ATTRIBUTES &&
325 (attrs & FILE_ATTRIBUTE_READONLY)) {
326 /* ignore errors again */
327 SetFileAttributes(file_name, attrs);
329 return rc;
332 unsigned int sleep (unsigned int seconds)
334 Sleep(seconds*1000);
335 return 0;
338 int mkstemp(char *template)
340 char *filename = mktemp(template);
341 if (filename == NULL)
342 return -1;
343 return open(filename, O_RDWR | O_CREAT, 0600);
346 int gettimeofday(struct timeval *tv, void *tz)
348 FILETIME ft;
349 long long hnsec;
351 GetSystemTimeAsFileTime(&ft);
352 hnsec = filetime_to_hnsec(&ft);
353 tv->tv_sec = hnsec / 10000000;
354 tv->tv_usec = (hnsec % 10000000) / 10;
355 return 0;
358 int pipe(int filedes[2])
360 HANDLE h[2];
362 /* this creates non-inheritable handles */
363 if (!CreatePipe(&h[0], &h[1], NULL, 8192)) {
364 errno = err_win_to_posix(GetLastError());
365 return -1;
367 filedes[0] = _open_osfhandle((int)h[0], O_NOINHERIT);
368 if (filedes[0] < 0) {
369 CloseHandle(h[0]);
370 CloseHandle(h[1]);
371 return -1;
373 filedes[1] = _open_osfhandle((int)h[1], O_NOINHERIT);
374 if (filedes[0] < 0) {
375 close(filedes[0]);
376 CloseHandle(h[1]);
377 return -1;
379 return 0;
382 int poll(struct pollfd *ufds, unsigned int nfds, int timeout)
384 int i, pending;
386 if (timeout >= 0) {
387 if (nfds == 0) {
388 Sleep(timeout);
389 return 0;
391 return errno = EINVAL, error("poll timeout not supported");
394 /* When there is only one fd to wait for, then we pretend that
395 * input is available and let the actual wait happen when the
396 * caller invokes read().
398 if (nfds == 1) {
399 if (!(ufds[0].events & POLLIN))
400 return errno = EINVAL, error("POLLIN not set");
401 ufds[0].revents = POLLIN;
402 return 0;
405 repeat:
406 pending = 0;
407 for (i = 0; i < nfds; i++) {
408 DWORD avail = 0;
409 HANDLE h = (HANDLE) _get_osfhandle(ufds[i].fd);
410 if (h == INVALID_HANDLE_VALUE)
411 return -1; /* errno was set */
413 if (!(ufds[i].events & POLLIN))
414 return errno = EINVAL, error("POLLIN not set");
416 /* this emulation works only for pipes */
417 if (!PeekNamedPipe(h, NULL, 0, NULL, &avail, NULL)) {
418 int err = GetLastError();
419 if (err == ERROR_BROKEN_PIPE) {
420 ufds[i].revents = POLLHUP;
421 pending++;
422 } else {
423 errno = EINVAL;
424 return error("PeekNamedPipe failed,"
425 " GetLastError: %u", err);
427 } else if (avail) {
428 ufds[i].revents = POLLIN;
429 pending++;
430 } else
431 ufds[i].revents = 0;
433 if (!pending) {
434 /* The only times that we spin here is when the process
435 * that is connected through the pipes is waiting for
436 * its own input data to become available. But since
437 * the process (pack-objects) is itself CPU intensive,
438 * it will happily pick up the time slice that we are
439 * relinquishing here.
441 Sleep(0);
442 goto repeat;
444 return 0;
447 struct tm *gmtime_r(const time_t *timep, struct tm *result)
449 /* gmtime() in MSVCRT.DLL is thread-safe, but not reentrant */
450 memcpy(result, gmtime(timep), sizeof(struct tm));
451 return result;
454 struct tm *localtime_r(const time_t *timep, struct tm *result)
456 /* localtime() in MSVCRT.DLL is thread-safe, but not reentrant */
457 memcpy(result, localtime(timep), sizeof(struct tm));
458 return result;
461 #undef getcwd
462 char *mingw_getcwd(char *pointer, int len)
464 int i;
465 char *ret = getcwd(pointer, len);
466 if (!ret)
467 return ret;
468 for (i = 0; pointer[i]; i++)
469 if (pointer[i] == '\\')
470 pointer[i] = '/';
471 return ret;
474 #undef getenv
475 char *mingw_getenv(const char *name)
477 char *result = getenv(name);
478 if (!result && !strcmp(name, "TMPDIR")) {
479 /* on Windows it is TMP and TEMP */
480 result = getenv("TMP");
481 if (!result)
482 result = getenv("TEMP");
484 return result;
488 * See http://msdn2.microsoft.com/en-us/library/17w5ykft(vs.71).aspx
489 * (Parsing C++ Command-Line Arguments)
491 static const char *quote_arg(const char *arg)
493 /* count chars to quote */
494 int len = 0, n = 0;
495 int force_quotes = 0;
496 char *q, *d;
497 const char *p = arg;
498 if (!*p) force_quotes = 1;
499 while (*p) {
500 if (isspace(*p) || *p == '*' || *p == '?' || *p == '{' || *p == '\'')
501 force_quotes = 1;
502 else if (*p == '"')
503 n++;
504 else if (*p == '\\') {
505 int count = 0;
506 while (*p == '\\') {
507 count++;
508 p++;
509 len++;
511 if (*p == '"')
512 n += count*2 + 1;
513 continue;
515 len++;
516 p++;
518 if (!force_quotes && n == 0)
519 return arg;
521 /* insert \ where necessary */
522 d = q = xmalloc(len+n+3);
523 *d++ = '"';
524 while (*arg) {
525 if (*arg == '"')
526 *d++ = '\\';
527 else if (*arg == '\\') {
528 int count = 0;
529 while (*arg == '\\') {
530 count++;
531 *d++ = *arg++;
533 if (*arg == '"') {
534 while (count-- > 0)
535 *d++ = '\\';
536 *d++ = '\\';
539 *d++ = *arg++;
541 *d++ = '"';
542 *d++ = 0;
543 return q;
546 static const char *parse_interpreter(const char *cmd)
548 static char buf[100];
549 char *p, *opt;
550 int n, fd;
552 /* don't even try a .exe */
553 n = strlen(cmd);
554 if (n >= 4 && !strcasecmp(cmd+n-4, ".exe"))
555 return NULL;
557 fd = open(cmd, O_RDONLY);
558 if (fd < 0)
559 return NULL;
560 n = read(fd, buf, sizeof(buf)-1);
561 close(fd);
562 if (n < 4) /* at least '#!/x' and not error */
563 return NULL;
565 if (buf[0] != '#' || buf[1] != '!')
566 return NULL;
567 buf[n] = '\0';
568 p = buf + strcspn(buf, "\r\n");
569 if (!*p)
570 return NULL;
572 *p = '\0';
573 if (!(p = strrchr(buf+2, '/')) && !(p = strrchr(buf+2, '\\')))
574 return NULL;
575 /* strip options */
576 if ((opt = strchr(p+1, ' ')))
577 *opt = '\0';
578 return p+1;
582 * Splits the PATH into parts.
584 static char **get_path_split(void)
586 char *p, **path, *envpath = getenv("PATH");
587 int i, n = 0;
589 if (!envpath || !*envpath)
590 return NULL;
592 envpath = xstrdup(envpath);
593 p = envpath;
594 while (p) {
595 char *dir = p;
596 p = strchr(p, ';');
597 if (p) *p++ = '\0';
598 if (*dir) { /* not earlier, catches series of ; */
599 ++n;
602 if (!n)
603 return NULL;
605 path = xmalloc((n+1)*sizeof(char *));
606 p = envpath;
607 i = 0;
608 do {
609 if (*p)
610 path[i++] = xstrdup(p);
611 p = p+strlen(p)+1;
612 } while (i < n);
613 path[i] = NULL;
615 free(envpath);
617 return path;
620 static void free_path_split(char **path)
622 char **p = path;
624 if (!path)
625 return;
627 while (*p)
628 free(*p++);
629 free(path);
633 * exe_only means that we only want to detect .exe files, but not scripts
634 * (which do not have an extension)
636 static char *lookup_prog(const char *dir, const char *cmd, int isexe, int exe_only)
638 char path[MAX_PATH];
639 snprintf(path, sizeof(path), "%s/%s.exe", dir, cmd);
641 if (!isexe && access(path, F_OK) == 0)
642 return xstrdup(path);
643 path[strlen(path)-4] = '\0';
644 if ((!exe_only || isexe) && access(path, F_OK) == 0)
645 if (!(GetFileAttributes(path) & FILE_ATTRIBUTE_DIRECTORY))
646 return xstrdup(path);
647 return NULL;
651 * Determines the absolute path of cmd using the split path in path.
652 * If cmd contains a slash or backslash, no lookup is performed.
654 static char *path_lookup(const char *cmd, char **path, int exe_only)
656 char *prog = NULL;
657 int len = strlen(cmd);
658 int isexe = len >= 4 && !strcasecmp(cmd+len-4, ".exe");
660 if (strchr(cmd, '/') || strchr(cmd, '\\'))
661 prog = xstrdup(cmd);
663 while (!prog && *path)
664 prog = lookup_prog(*path++, cmd, isexe, exe_only);
666 return prog;
669 static int env_compare(const void *a, const void *b)
671 char *const *ea = a;
672 char *const *eb = b;
673 return strcasecmp(*ea, *eb);
676 static pid_t mingw_spawnve_fd(const char *cmd, const char **argv, char **env,
677 const char *dir,
678 int prepend_cmd, int fhin, int fhout, int fherr)
680 STARTUPINFO si;
681 PROCESS_INFORMATION pi;
682 struct strbuf envblk, args;
683 unsigned flags;
684 BOOL ret;
686 /* Determine whether or not we are associated to a console */
687 HANDLE cons = CreateFile("CONOUT$", GENERIC_WRITE,
688 FILE_SHARE_WRITE, NULL, OPEN_EXISTING,
689 FILE_ATTRIBUTE_NORMAL, NULL);
690 if (cons == INVALID_HANDLE_VALUE) {
691 /* There is no console associated with this process.
692 * Since the child is a console process, Windows
693 * would normally create a console window. But
694 * since we'll be redirecting std streams, we do
695 * not need the console.
696 * It is necessary to use DETACHED_PROCESS
697 * instead of CREATE_NO_WINDOW to make ssh
698 * recognize that it has no console.
700 flags = DETACHED_PROCESS;
701 } else {
702 /* There is already a console. If we specified
703 * DETACHED_PROCESS here, too, Windows would
704 * disassociate the child from the console.
705 * The same is true for CREATE_NO_WINDOW.
706 * Go figure!
708 flags = 0;
709 CloseHandle(cons);
711 memset(&si, 0, sizeof(si));
712 si.cb = sizeof(si);
713 si.dwFlags = STARTF_USESTDHANDLES;
714 si.hStdInput = (HANDLE) _get_osfhandle(fhin);
715 si.hStdOutput = (HANDLE) _get_osfhandle(fhout);
716 si.hStdError = (HANDLE) _get_osfhandle(fherr);
718 /* concatenate argv, quoting args as we go */
719 strbuf_init(&args, 0);
720 if (prepend_cmd) {
721 char *quoted = (char *)quote_arg(cmd);
722 strbuf_addstr(&args, quoted);
723 if (quoted != cmd)
724 free(quoted);
726 for (; *argv; argv++) {
727 char *quoted = (char *)quote_arg(*argv);
728 if (*args.buf)
729 strbuf_addch(&args, ' ');
730 strbuf_addstr(&args, quoted);
731 if (quoted != *argv)
732 free(quoted);
735 if (env) {
736 int count = 0;
737 char **e, **sorted_env;
739 for (e = env; *e; e++)
740 count++;
742 /* environment must be sorted */
743 sorted_env = xmalloc(sizeof(*sorted_env) * (count + 1));
744 memcpy(sorted_env, env, sizeof(*sorted_env) * (count + 1));
745 qsort(sorted_env, count, sizeof(*sorted_env), env_compare);
747 strbuf_init(&envblk, 0);
748 for (e = sorted_env; *e; e++) {
749 strbuf_addstr(&envblk, *e);
750 strbuf_addch(&envblk, '\0');
752 free(sorted_env);
755 memset(&pi, 0, sizeof(pi));
756 ret = CreateProcess(cmd, args.buf, NULL, NULL, TRUE, flags,
757 env ? envblk.buf : NULL, dir, &si, &pi);
759 if (env)
760 strbuf_release(&envblk);
761 strbuf_release(&args);
763 if (!ret) {
764 errno = ENOENT;
765 return -1;
767 CloseHandle(pi.hThread);
768 return (pid_t)pi.hProcess;
771 static pid_t mingw_spawnve(const char *cmd, const char **argv, char **env,
772 int prepend_cmd)
774 return mingw_spawnve_fd(cmd, argv, env, NULL, prepend_cmd, 0, 1, 2);
777 pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **env,
778 const char *dir,
779 int fhin, int fhout, int fherr)
781 pid_t pid;
782 char **path = get_path_split();
783 char *prog = path_lookup(cmd, path, 0);
785 if (!prog) {
786 errno = ENOENT;
787 pid = -1;
789 else {
790 const char *interpr = parse_interpreter(prog);
792 if (interpr) {
793 const char *argv0 = argv[0];
794 char *iprog = path_lookup(interpr, path, 1);
795 argv[0] = prog;
796 if (!iprog) {
797 errno = ENOENT;
798 pid = -1;
800 else {
801 pid = mingw_spawnve_fd(iprog, argv, env, dir, 1,
802 fhin, fhout, fherr);
803 free(iprog);
805 argv[0] = argv0;
807 else
808 pid = mingw_spawnve_fd(prog, argv, env, dir, 0,
809 fhin, fhout, fherr);
810 free(prog);
812 free_path_split(path);
813 return pid;
816 static int try_shell_exec(const char *cmd, char *const *argv, char **env)
818 const char *interpr = parse_interpreter(cmd);
819 char **path;
820 char *prog;
821 int pid = 0;
823 if (!interpr)
824 return 0;
825 path = get_path_split();
826 prog = path_lookup(interpr, path, 1);
827 if (prog) {
828 int argc = 0;
829 const char **argv2;
830 while (argv[argc]) argc++;
831 argv2 = xmalloc(sizeof(*argv) * (argc+1));
832 argv2[0] = (char *)cmd; /* full path to the script file */
833 memcpy(&argv2[1], &argv[1], sizeof(*argv) * argc);
834 pid = mingw_spawnve(prog, argv2, env, 1);
835 if (pid >= 0) {
836 int status;
837 if (waitpid(pid, &status, 0) < 0)
838 status = 255;
839 exit(status);
841 pid = 1; /* indicate that we tried but failed */
842 free(prog);
843 free(argv2);
845 free_path_split(path);
846 return pid;
849 static void mingw_execve(const char *cmd, char *const *argv, char *const *env)
851 /* check if git_command is a shell script */
852 if (!try_shell_exec(cmd, argv, (char **)env)) {
853 int pid, status;
855 pid = mingw_spawnve(cmd, (const char **)argv, (char **)env, 0);
856 if (pid < 0)
857 return;
858 if (waitpid(pid, &status, 0) < 0)
859 status = 255;
860 exit(status);
864 void mingw_execvp(const char *cmd, char *const *argv)
866 char **path = get_path_split();
867 char *prog = path_lookup(cmd, path, 0);
869 if (prog) {
870 mingw_execve(prog, argv, environ);
871 free(prog);
872 } else
873 errno = ENOENT;
875 free_path_split(path);
878 static char **copy_environ(void)
880 char **env;
881 int i = 0;
882 while (environ[i])
883 i++;
884 env = xmalloc((i+1)*sizeof(*env));
885 for (i = 0; environ[i]; i++)
886 env[i] = xstrdup(environ[i]);
887 env[i] = NULL;
888 return env;
891 void free_environ(char **env)
893 int i;
894 for (i = 0; env[i]; i++)
895 free(env[i]);
896 free(env);
899 static int lookup_env(char **env, const char *name, size_t nmln)
901 int i;
903 for (i = 0; env[i]; i++) {
904 if (0 == strncmp(env[i], name, nmln)
905 && '=' == env[i][nmln])
906 /* matches */
907 return i;
909 return -1;
913 * If name contains '=', then sets the variable, otherwise it unsets it
915 static char **env_setenv(char **env, const char *name)
917 char *eq = strchrnul(name, '=');
918 int i = lookup_env(env, name, eq-name);
920 if (i < 0) {
921 if (*eq) {
922 for (i = 0; env[i]; i++)
924 env = xrealloc(env, (i+2)*sizeof(*env));
925 env[i] = xstrdup(name);
926 env[i+1] = NULL;
929 else {
930 free(env[i]);
931 if (*eq)
932 env[i] = xstrdup(name);
933 else
934 for (; env[i]; i++)
935 env[i] = env[i+1];
937 return env;
941 * Copies global environ and adjusts variables as specified by vars.
943 char **make_augmented_environ(const char *const *vars)
945 char **env = copy_environ();
947 while (*vars)
948 env = env_setenv(env, *vars++);
949 return env;
953 * Note, this isn't a complete replacement for getaddrinfo. It assumes
954 * that service contains a numerical port, or that it it is null. It
955 * does a simple search using gethostbyname, and returns one IPv4 host
956 * if one was found.
958 static int WSAAPI getaddrinfo_stub(const char *node, const char *service,
959 const struct addrinfo *hints,
960 struct addrinfo **res)
962 struct hostent *h = gethostbyname(node);
963 struct addrinfo *ai;
964 struct sockaddr_in *sin;
966 if (!h)
967 return WSAGetLastError();
969 ai = xmalloc(sizeof(struct addrinfo));
970 *res = ai;
971 ai->ai_flags = 0;
972 ai->ai_family = AF_INET;
973 ai->ai_socktype = hints->ai_socktype;
974 switch (hints->ai_socktype) {
975 case SOCK_STREAM:
976 ai->ai_protocol = IPPROTO_TCP;
977 break;
978 case SOCK_DGRAM:
979 ai->ai_protocol = IPPROTO_UDP;
980 break;
981 default:
982 ai->ai_protocol = 0;
983 break;
985 ai->ai_addrlen = sizeof(struct sockaddr_in);
986 ai->ai_canonname = strdup(h->h_name);
988 sin = xmalloc(ai->ai_addrlen);
989 memset(sin, 0, ai->ai_addrlen);
990 sin->sin_family = AF_INET;
991 if (service)
992 sin->sin_port = htons(atoi(service));
993 sin->sin_addr = *(struct in_addr *)h->h_addr;
994 ai->ai_addr = (struct sockaddr *)sin;
995 ai->ai_next = 0;
996 return 0;
999 static void WSAAPI freeaddrinfo_stub(struct addrinfo *res)
1001 free(res->ai_canonname);
1002 free(res->ai_addr);
1003 free(res);
1006 static int WSAAPI getnameinfo_stub(const struct sockaddr *sa, socklen_t salen,
1007 char *host, DWORD hostlen,
1008 char *serv, DWORD servlen, int flags)
1010 const struct sockaddr_in *sin = (const struct sockaddr_in *)sa;
1011 if (sa->sa_family != AF_INET)
1012 return EAI_FAMILY;
1013 if (!host && !serv)
1014 return EAI_NONAME;
1016 if (host && hostlen > 0) {
1017 struct hostent *ent = NULL;
1018 if (!(flags & NI_NUMERICHOST))
1019 ent = gethostbyaddr((const char *)&sin->sin_addr,
1020 sizeof(sin->sin_addr), AF_INET);
1022 if (ent)
1023 snprintf(host, hostlen, "%s", ent->h_name);
1024 else if (flags & NI_NAMEREQD)
1025 return EAI_NONAME;
1026 else
1027 snprintf(host, hostlen, "%s", inet_ntoa(sin->sin_addr));
1030 if (serv && servlen > 0) {
1031 struct servent *ent = NULL;
1032 if (!(flags & NI_NUMERICSERV))
1033 ent = getservbyport(sin->sin_port,
1034 flags & NI_DGRAM ? "udp" : "tcp");
1036 if (ent)
1037 snprintf(serv, servlen, "%s", ent->s_name);
1038 else
1039 snprintf(serv, servlen, "%d", ntohs(sin->sin_port));
1042 return 0;
1045 static HMODULE ipv6_dll = NULL;
1046 static void (WSAAPI *ipv6_freeaddrinfo)(struct addrinfo *res);
1047 static int (WSAAPI *ipv6_getaddrinfo)(const char *node, const char *service,
1048 const struct addrinfo *hints,
1049 struct addrinfo **res);
1050 static int (WSAAPI *ipv6_getnameinfo)(const struct sockaddr *sa, socklen_t salen,
1051 char *host, DWORD hostlen,
1052 char *serv, DWORD servlen, int flags);
1054 * gai_strerror is an inline function in the ws2tcpip.h header, so we
1055 * don't need to try to load that one dynamically.
1058 static void socket_cleanup(void)
1060 WSACleanup();
1061 if (ipv6_dll)
1062 FreeLibrary(ipv6_dll);
1063 ipv6_dll = NULL;
1064 ipv6_freeaddrinfo = freeaddrinfo_stub;
1065 ipv6_getaddrinfo = getaddrinfo_stub;
1066 ipv6_getnameinfo = getnameinfo_stub;
1069 static void ensure_socket_initialization(void)
1071 WSADATA wsa;
1072 static int initialized = 0;
1073 const char *libraries[] = { "ws2_32.dll", "wship6.dll", NULL };
1074 const char **name;
1076 if (initialized)
1077 return;
1079 if (WSAStartup(MAKEWORD(2,2), &wsa))
1080 die("unable to initialize winsock subsystem, error %d",
1081 WSAGetLastError());
1083 for (name = libraries; *name; name++) {
1084 ipv6_dll = LoadLibrary(*name);
1085 if (!ipv6_dll)
1086 continue;
1088 ipv6_freeaddrinfo = (void (WSAAPI *)(struct addrinfo *))
1089 GetProcAddress(ipv6_dll, "freeaddrinfo");
1090 ipv6_getaddrinfo = (int (WSAAPI *)(const char *, const char *,
1091 const struct addrinfo *,
1092 struct addrinfo **))
1093 GetProcAddress(ipv6_dll, "getaddrinfo");
1094 ipv6_getnameinfo = (int (WSAAPI *)(const struct sockaddr *,
1095 socklen_t, char *, DWORD,
1096 char *, DWORD, int))
1097 GetProcAddress(ipv6_dll, "getnameinfo");
1098 if (!ipv6_freeaddrinfo || !ipv6_getaddrinfo || !ipv6_getnameinfo) {
1099 FreeLibrary(ipv6_dll);
1100 ipv6_dll = NULL;
1101 } else
1102 break;
1104 if (!ipv6_freeaddrinfo || !ipv6_getaddrinfo || !ipv6_getnameinfo) {
1105 ipv6_freeaddrinfo = freeaddrinfo_stub;
1106 ipv6_getaddrinfo = getaddrinfo_stub;
1107 ipv6_getnameinfo = getnameinfo_stub;
1110 atexit(socket_cleanup);
1111 initialized = 1;
1114 #undef gethostbyname
1115 struct hostent *mingw_gethostbyname(const char *host)
1117 ensure_socket_initialization();
1118 return gethostbyname(host);
1121 void mingw_freeaddrinfo(struct addrinfo *res)
1123 ipv6_freeaddrinfo(res);
1126 int mingw_getaddrinfo(const char *node, const char *service,
1127 const struct addrinfo *hints, struct addrinfo **res)
1129 ensure_socket_initialization();
1130 return ipv6_getaddrinfo(node, service, hints, res);
1133 int mingw_getnameinfo(const struct sockaddr *sa, socklen_t salen,
1134 char *host, DWORD hostlen, char *serv, DWORD servlen,
1135 int flags)
1137 ensure_socket_initialization();
1138 return ipv6_getnameinfo(sa, salen, host, hostlen, serv, servlen, flags);
1141 int mingw_socket(int domain, int type, int protocol)
1143 int sockfd;
1144 SOCKET s = WSASocket(domain, type, protocol, NULL, 0, 0);
1145 if (s == INVALID_SOCKET) {
1147 * WSAGetLastError() values are regular BSD error codes
1148 * biased by WSABASEERR.
1149 * However, strerror() does not know about networking
1150 * specific errors, which are values beginning at 38 or so.
1151 * Therefore, we choose to leave the biased error code
1152 * in errno so that _if_ someone looks up the code somewhere,
1153 * then it is at least the number that are usually listed.
1155 errno = WSAGetLastError();
1156 return -1;
1158 /* convert into a file descriptor */
1159 if ((sockfd = _open_osfhandle(s, O_RDWR|O_BINARY)) < 0) {
1160 closesocket(s);
1161 return error("unable to make a socket file descriptor: %s",
1162 strerror(errno));
1164 return sockfd;
1167 #undef connect
1168 int mingw_connect(int sockfd, struct sockaddr *sa, size_t sz)
1170 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
1171 return connect(s, sa, sz);
1174 #undef rename
1175 int mingw_rename(const char *pold, const char *pnew)
1177 DWORD attrs, gle;
1178 int tries = 0;
1179 static const int delay[] = { 0, 1, 10, 20, 40 };
1182 * Try native rename() first to get errno right.
1183 * It is based on MoveFile(), which cannot overwrite existing files.
1185 if (!rename(pold, pnew))
1186 return 0;
1187 if (errno != EEXIST)
1188 return -1;
1189 repeat:
1190 if (MoveFileEx(pold, pnew, MOVEFILE_REPLACE_EXISTING))
1191 return 0;
1192 /* TODO: translate more errors */
1193 gle = GetLastError();
1194 if (gle == ERROR_ACCESS_DENIED &&
1195 (attrs = GetFileAttributes(pnew)) != INVALID_FILE_ATTRIBUTES) {
1196 if (attrs & FILE_ATTRIBUTE_DIRECTORY) {
1197 errno = EISDIR;
1198 return -1;
1200 if ((attrs & FILE_ATTRIBUTE_READONLY) &&
1201 SetFileAttributes(pnew, attrs & ~FILE_ATTRIBUTE_READONLY)) {
1202 if (MoveFileEx(pold, pnew, MOVEFILE_REPLACE_EXISTING))
1203 return 0;
1204 gle = GetLastError();
1205 /* revert file attributes on failure */
1206 SetFileAttributes(pnew, attrs);
1209 if (tries < ARRAY_SIZE(delay) && gle == ERROR_ACCESS_DENIED) {
1211 * We assume that some other process had the source or
1212 * destination file open at the wrong moment and retry.
1213 * In order to give the other process a higher chance to
1214 * complete its operation, we give up our time slice now.
1215 * If we have to retry again, we do sleep a bit.
1217 Sleep(delay[tries]);
1218 tries++;
1219 goto repeat;
1221 errno = EACCES;
1222 return -1;
1226 * Note that this doesn't return the actual pagesize, but
1227 * the allocation granularity. If future Windows specific git code
1228 * needs the real getpagesize function, we need to find another solution.
1230 int mingw_getpagesize(void)
1232 SYSTEM_INFO si;
1233 GetSystemInfo(&si);
1234 return si.dwAllocationGranularity;
1237 struct passwd *getpwuid(int uid)
1239 static char user_name[100];
1240 static struct passwd p;
1242 DWORD len = sizeof(user_name);
1243 if (!GetUserName(user_name, &len))
1244 return NULL;
1245 p.pw_name = user_name;
1246 p.pw_gecos = "unknown";
1247 p.pw_dir = NULL;
1248 return &p;
1251 static HANDLE timer_event;
1252 static HANDLE timer_thread;
1253 static int timer_interval;
1254 static int one_shot;
1255 static sig_handler_t timer_fn = SIG_DFL;
1257 /* The timer works like this:
1258 * The thread, ticktack(), is a trivial routine that most of the time
1259 * only waits to receive the signal to terminate. The main thread tells
1260 * the thread to terminate by setting the timer_event to the signalled
1261 * state.
1262 * But ticktack() interrupts the wait state after the timer's interval
1263 * length to call the signal handler.
1266 static unsigned __stdcall ticktack(void *dummy)
1268 while (WaitForSingleObject(timer_event, timer_interval) == WAIT_TIMEOUT) {
1269 if (timer_fn == SIG_DFL)
1270 die("Alarm");
1271 if (timer_fn != SIG_IGN)
1272 timer_fn(SIGALRM);
1273 if (one_shot)
1274 break;
1276 return 0;
1279 static int start_timer_thread(void)
1281 timer_event = CreateEvent(NULL, FALSE, FALSE, NULL);
1282 if (timer_event) {
1283 timer_thread = (HANDLE) _beginthreadex(NULL, 0, ticktack, NULL, 0, NULL);
1284 if (!timer_thread )
1285 return errno = ENOMEM,
1286 error("cannot start timer thread");
1287 } else
1288 return errno = ENOMEM,
1289 error("cannot allocate resources for timer");
1290 return 0;
1293 static void stop_timer_thread(void)
1295 if (timer_event)
1296 SetEvent(timer_event); /* tell thread to terminate */
1297 if (timer_thread) {
1298 int rc = WaitForSingleObject(timer_thread, 1000);
1299 if (rc == WAIT_TIMEOUT)
1300 error("timer thread did not terminate timely");
1301 else if (rc != WAIT_OBJECT_0)
1302 error("waiting for timer thread failed: %lu",
1303 GetLastError());
1304 CloseHandle(timer_thread);
1306 if (timer_event)
1307 CloseHandle(timer_event);
1308 timer_event = NULL;
1309 timer_thread = NULL;
1312 static inline int is_timeval_eq(const struct timeval *i1, const struct timeval *i2)
1314 return i1->tv_sec == i2->tv_sec && i1->tv_usec == i2->tv_usec;
1317 int setitimer(int type, struct itimerval *in, struct itimerval *out)
1319 static const struct timeval zero;
1320 static int atexit_done;
1322 if (out != NULL)
1323 return errno = EINVAL,
1324 error("setitimer param 3 != NULL not implemented");
1325 if (!is_timeval_eq(&in->it_interval, &zero) &&
1326 !is_timeval_eq(&in->it_interval, &in->it_value))
1327 return errno = EINVAL,
1328 error("setitimer: it_interval must be zero or eq it_value");
1330 if (timer_thread)
1331 stop_timer_thread();
1333 if (is_timeval_eq(&in->it_value, &zero) &&
1334 is_timeval_eq(&in->it_interval, &zero))
1335 return 0;
1337 timer_interval = in->it_value.tv_sec * 1000 + in->it_value.tv_usec / 1000;
1338 one_shot = is_timeval_eq(&in->it_interval, &zero);
1339 if (!atexit_done) {
1340 atexit(stop_timer_thread);
1341 atexit_done = 1;
1343 return start_timer_thread();
1346 int sigaction(int sig, struct sigaction *in, struct sigaction *out)
1348 if (sig != SIGALRM)
1349 return errno = EINVAL,
1350 error("sigaction only implemented for SIGALRM");
1351 if (out != NULL)
1352 return errno = EINVAL,
1353 error("sigaction: param 3 != NULL not implemented");
1355 timer_fn = in->sa_handler;
1356 return 0;
1359 #undef signal
1360 sig_handler_t mingw_signal(int sig, sig_handler_t handler)
1362 sig_handler_t old = timer_fn;
1363 if (sig != SIGALRM)
1364 return signal(sig, handler);
1365 timer_fn = handler;
1366 return old;
1369 static const char *make_backslash_path(const char *path)
1371 static char buf[PATH_MAX + 1];
1372 char *c;
1374 if (strlcpy(buf, path, PATH_MAX) >= PATH_MAX)
1375 die("Too long path: %.*s", 60, path);
1377 for (c = buf; *c; c++) {
1378 if (*c == '/')
1379 *c = '\\';
1381 return buf;
1384 void mingw_open_html(const char *unixpath)
1386 const char *htmlpath = make_backslash_path(unixpath);
1387 typedef HINSTANCE (WINAPI *T)(HWND, const char *,
1388 const char *, const char *, const char *, INT);
1389 T ShellExecute;
1390 HMODULE shell32;
1392 shell32 = LoadLibrary("shell32.dll");
1393 if (!shell32)
1394 die("cannot load shell32.dll");
1395 ShellExecute = (T)GetProcAddress(shell32, "ShellExecuteA");
1396 if (!ShellExecute)
1397 die("cannot run browser");
1399 printf("Launching default browser to display HTML ...\n");
1400 ShellExecute(NULL, "open", htmlpath, NULL, "\\", 0);
1402 FreeLibrary(shell32);
1405 int link(const char *oldpath, const char *newpath)
1407 typedef BOOL (WINAPI *T)(const char*, const char*, LPSECURITY_ATTRIBUTES);
1408 static T create_hard_link = NULL;
1409 if (!create_hard_link) {
1410 create_hard_link = (T) GetProcAddress(
1411 GetModuleHandle("kernel32.dll"), "CreateHardLinkA");
1412 if (!create_hard_link)
1413 create_hard_link = (T)-1;
1415 if (create_hard_link == (T)-1) {
1416 errno = ENOSYS;
1417 return -1;
1419 if (!create_hard_link(newpath, oldpath, NULL)) {
1420 errno = err_win_to_posix(GetLastError());
1421 return -1;
1423 return 0;
1426 char *getpass(const char *prompt)
1428 struct strbuf buf = STRBUF_INIT;
1430 fputs(prompt, stderr);
1431 for (;;) {
1432 char c = _getch();
1433 if (c == '\r' || c == '\n')
1434 break;
1435 strbuf_addch(&buf, c);
1437 fputs("\n", stderr);
1438 return strbuf_detach(&buf, NULL);
1441 #ifndef NO_MINGW_REPLACE_READDIR
1442 /* MinGW readdir implementation to avoid extra lstats for Git */
1443 struct mingw_DIR
1445 struct _finddata_t dd_dta; /* disk transfer area for this dir */
1446 struct mingw_dirent dd_dir; /* Our own implementation, including d_type */
1447 long dd_handle; /* _findnext handle */
1448 int dd_stat; /* 0 = next entry to read is first entry, -1 = off the end, positive = 0 based index of next entry */
1449 char dd_name[1]; /* given path for dir with search pattern (struct is extended) */
1452 struct dirent *mingw_readdir(DIR *dir)
1454 WIN32_FIND_DATAA buf;
1455 HANDLE handle;
1456 struct mingw_DIR *mdir = (struct mingw_DIR*)dir;
1458 if (!dir->dd_handle) {
1459 errno = EBADF; /* No set_errno for mingw */
1460 return NULL;
1463 if (dir->dd_handle == (long)INVALID_HANDLE_VALUE && dir->dd_stat == 0)
1465 DWORD lasterr;
1466 handle = FindFirstFileA(dir->dd_name, &buf);
1467 lasterr = GetLastError();
1468 dir->dd_handle = (long)handle;
1469 if (handle == INVALID_HANDLE_VALUE && (lasterr != ERROR_NO_MORE_FILES)) {
1470 errno = err_win_to_posix(lasterr);
1471 return NULL;
1473 } else if (dir->dd_handle == (long)INVALID_HANDLE_VALUE) {
1474 return NULL;
1475 } else if (!FindNextFileA((HANDLE)dir->dd_handle, &buf)) {
1476 DWORD lasterr = GetLastError();
1477 FindClose((HANDLE)dir->dd_handle);
1478 dir->dd_handle = (long)INVALID_HANDLE_VALUE;
1479 /* POSIX says you shouldn't set errno when readdir can't
1480 find any more files; so, if another error we leave it set. */
1481 if (lasterr != ERROR_NO_MORE_FILES)
1482 errno = err_win_to_posix(lasterr);
1483 return NULL;
1486 /* We get here if `buf' contains valid data. */
1487 strcpy(dir->dd_dir.d_name, buf.cFileName);
1488 ++dir->dd_stat;
1490 /* Set file type, based on WIN32_FIND_DATA */
1491 mdir->dd_dir.d_type = 0;
1492 if (buf.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
1493 mdir->dd_dir.d_type |= DT_DIR;
1494 else
1495 mdir->dd_dir.d_type |= DT_REG;
1497 return (struct dirent*)&dir->dd_dir;
1499 #endif // !NO_MINGW_REPLACE_READDIR