Fix compat/regex ANSIfication on MinGW
[git/dscho.git] / compat / mingw.c
blob9a8e3365827d303c6513475726113a3952fe0040
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 WIN32_FILE_ATTRIBUTE_DATA fdata;
200 if (!(errno = get_file_attr(file_name, &fdata))) {
201 buf->st_ino = 0;
202 buf->st_gid = 0;
203 buf->st_uid = 0;
204 buf->st_nlink = 1;
205 buf->st_mode = file_attr_to_st_mode(fdata.dwFileAttributes);
206 buf->st_size = fdata.nFileSizeLow |
207 (((off_t)fdata.nFileSizeHigh)<<32);
208 buf->st_dev = buf->st_rdev = 0; /* not used by Git */
209 buf->st_atime = filetime_to_time_t(&(fdata.ftLastAccessTime));
210 buf->st_mtime = filetime_to_time_t(&(fdata.ftLastWriteTime));
211 buf->st_ctime = filetime_to_time_t(&(fdata.ftCreationTime));
212 return 0;
214 return -1;
217 /* We provide our own lstat/fstat functions, since the provided
218 * lstat/fstat functions are so slow. These stat functions are
219 * tailored for Git's usage (read: fast), and are not meant to be
220 * complete. Note that Git stat()s are redirected to mingw_lstat()
221 * too, since Windows doesn't really handle symlinks that well.
223 int mingw_lstat(const char *file_name, struct stat *buf)
225 int namelen;
226 static char alt_name[PATH_MAX];
228 if (!do_lstat(file_name, buf))
229 return 0;
231 /* if file_name ended in a '/', Windows returned ENOENT;
232 * try again without trailing slashes
234 if (errno != ENOENT)
235 return -1;
237 namelen = strlen(file_name);
238 if (namelen && file_name[namelen-1] != '/')
239 return -1;
240 while (namelen && file_name[namelen-1] == '/')
241 --namelen;
242 if (!namelen || namelen >= PATH_MAX)
243 return -1;
245 memcpy(alt_name, file_name, namelen);
246 alt_name[namelen] = 0;
247 return do_lstat(alt_name, buf);
250 #undef fstat
251 int mingw_fstat(int fd, struct stat *buf)
253 HANDLE fh = (HANDLE)_get_osfhandle(fd);
254 BY_HANDLE_FILE_INFORMATION fdata;
256 if (fh == INVALID_HANDLE_VALUE) {
257 errno = EBADF;
258 return -1;
260 /* direct non-file handles to MS's fstat() */
261 if (GetFileType(fh) != FILE_TYPE_DISK)
262 return _fstati64(fd, buf);
264 if (GetFileInformationByHandle(fh, &fdata)) {
265 buf->st_ino = 0;
266 buf->st_gid = 0;
267 buf->st_uid = 0;
268 buf->st_nlink = 1;
269 buf->st_mode = file_attr_to_st_mode(fdata.dwFileAttributes);
270 buf->st_size = fdata.nFileSizeLow |
271 (((off_t)fdata.nFileSizeHigh)<<32);
272 buf->st_dev = buf->st_rdev = 0; /* not used by Git */
273 buf->st_atime = filetime_to_time_t(&(fdata.ftLastAccessTime));
274 buf->st_mtime = filetime_to_time_t(&(fdata.ftLastWriteTime));
275 buf->st_ctime = filetime_to_time_t(&(fdata.ftCreationTime));
276 return 0;
278 errno = EBADF;
279 return -1;
282 static inline void time_t_to_filetime(time_t t, FILETIME *ft)
284 long long winTime = t * 10000000LL + 116444736000000000LL;
285 ft->dwLowDateTime = winTime;
286 ft->dwHighDateTime = winTime >> 32;
289 int mingw_utime (const char *file_name, const struct utimbuf *times)
291 FILETIME mft, aft;
292 int fh, rc;
294 /* must have write permission */
295 DWORD attrs = GetFileAttributes(file_name);
296 if (attrs != INVALID_FILE_ATTRIBUTES &&
297 (attrs & FILE_ATTRIBUTE_READONLY)) {
298 /* ignore errors here; open() will report them */
299 SetFileAttributes(file_name, attrs & ~FILE_ATTRIBUTE_READONLY);
302 if ((fh = open(file_name, O_RDWR | O_BINARY)) < 0) {
303 rc = -1;
304 goto revert_attrs;
307 time_t_to_filetime(times->modtime, &mft);
308 time_t_to_filetime(times->actime, &aft);
309 if (!SetFileTime((HANDLE)_get_osfhandle(fh), NULL, &aft, &mft)) {
310 errno = EINVAL;
311 rc = -1;
312 } else
313 rc = 0;
314 close(fh);
316 revert_attrs:
317 if (attrs != INVALID_FILE_ATTRIBUTES &&
318 (attrs & FILE_ATTRIBUTE_READONLY)) {
319 /* ignore errors again */
320 SetFileAttributes(file_name, attrs);
322 return rc;
325 unsigned int sleep (unsigned int seconds)
327 Sleep(seconds*1000);
328 return 0;
331 int mkstemp(char *template)
333 char *filename = mktemp(template);
334 if (filename == NULL)
335 return -1;
336 return open(filename, O_RDWR | O_CREAT, 0600);
339 int gettimeofday(struct timeval *tv, void *tz)
341 FILETIME ft;
342 long long hnsec;
344 GetSystemTimeAsFileTime(&ft);
345 hnsec = filetime_to_hnsec(&ft);
346 tv->tv_sec = hnsec / 10000000;
347 tv->tv_usec = (hnsec % 10000000) / 10;
348 return 0;
351 int pipe(int filedes[2])
353 HANDLE h[2];
355 /* this creates non-inheritable handles */
356 if (!CreatePipe(&h[0], &h[1], NULL, 8192)) {
357 errno = err_win_to_posix(GetLastError());
358 return -1;
360 filedes[0] = _open_osfhandle((int)h[0], O_NOINHERIT);
361 if (filedes[0] < 0) {
362 CloseHandle(h[0]);
363 CloseHandle(h[1]);
364 return -1;
366 filedes[1] = _open_osfhandle((int)h[1], O_NOINHERIT);
367 if (filedes[0] < 0) {
368 close(filedes[0]);
369 CloseHandle(h[1]);
370 return -1;
372 return 0;
375 int poll(struct pollfd *ufds, unsigned int nfds, int timeout)
377 int i, pending;
379 if (timeout >= 0) {
380 if (nfds == 0) {
381 Sleep(timeout);
382 return 0;
384 return errno = EINVAL, error("poll timeout not supported");
387 /* When there is only one fd to wait for, then we pretend that
388 * input is available and let the actual wait happen when the
389 * caller invokes read().
391 if (nfds == 1) {
392 if (!(ufds[0].events & POLLIN))
393 return errno = EINVAL, error("POLLIN not set");
394 ufds[0].revents = POLLIN;
395 return 0;
398 repeat:
399 pending = 0;
400 for (i = 0; i < nfds; i++) {
401 DWORD avail = 0;
402 HANDLE h = (HANDLE) _get_osfhandle(ufds[i].fd);
403 if (h == INVALID_HANDLE_VALUE)
404 return -1; /* errno was set */
406 if (!(ufds[i].events & POLLIN))
407 return errno = EINVAL, error("POLLIN not set");
409 /* this emulation works only for pipes */
410 if (!PeekNamedPipe(h, NULL, 0, NULL, &avail, NULL)) {
411 int err = GetLastError();
412 if (err == ERROR_BROKEN_PIPE) {
413 ufds[i].revents = POLLHUP;
414 pending++;
415 } else {
416 errno = EINVAL;
417 return error("PeekNamedPipe failed,"
418 " GetLastError: %u", err);
420 } else if (avail) {
421 ufds[i].revents = POLLIN;
422 pending++;
423 } else
424 ufds[i].revents = 0;
426 if (!pending) {
427 /* The only times that we spin here is when the process
428 * that is connected through the pipes is waiting for
429 * its own input data to become available. But since
430 * the process (pack-objects) is itself CPU intensive,
431 * it will happily pick up the time slice that we are
432 * relinquishing here.
434 Sleep(0);
435 goto repeat;
437 return 0;
440 struct tm *gmtime_r(const time_t *timep, struct tm *result)
442 /* gmtime() in MSVCRT.DLL is thread-safe, but not reentrant */
443 memcpy(result, gmtime(timep), sizeof(struct tm));
444 return result;
447 struct tm *localtime_r(const time_t *timep, struct tm *result)
449 /* localtime() in MSVCRT.DLL is thread-safe, but not reentrant */
450 memcpy(result, localtime(timep), sizeof(struct tm));
451 return result;
454 #undef getcwd
455 char *mingw_getcwd(char *pointer, int len)
457 int i;
458 char *ret = getcwd(pointer, len);
459 if (!ret)
460 return ret;
461 for (i = 0; pointer[i]; i++)
462 if (pointer[i] == '\\')
463 pointer[i] = '/';
464 return ret;
467 #undef getenv
468 char *mingw_getenv(const char *name)
470 char *result = getenv(name);
471 if (!result && !strcmp(name, "TMPDIR")) {
472 /* on Windows it is TMP and TEMP */
473 result = getenv("TMP");
474 if (!result)
475 result = getenv("TEMP");
477 return result;
481 * See http://msdn2.microsoft.com/en-us/library/17w5ykft(vs.71).aspx
482 * (Parsing C++ Command-Line Arguments)
484 static const char *quote_arg(const char *arg)
486 /* count chars to quote */
487 int len = 0, n = 0;
488 int force_quotes = 0;
489 char *q, *d;
490 const char *p = arg;
491 if (!*p) force_quotes = 1;
492 while (*p) {
493 if (isspace(*p) || *p == '*' || *p == '?' || *p == '{' || *p == '\'')
494 force_quotes = 1;
495 else if (*p == '"')
496 n++;
497 else if (*p == '\\') {
498 int count = 0;
499 while (*p == '\\') {
500 count++;
501 p++;
502 len++;
504 if (*p == '"')
505 n += count*2 + 1;
506 continue;
508 len++;
509 p++;
511 if (!force_quotes && n == 0)
512 return arg;
514 /* insert \ where necessary */
515 d = q = xmalloc(len+n+3);
516 *d++ = '"';
517 while (*arg) {
518 if (*arg == '"')
519 *d++ = '\\';
520 else if (*arg == '\\') {
521 int count = 0;
522 while (*arg == '\\') {
523 count++;
524 *d++ = *arg++;
526 if (*arg == '"') {
527 while (count-- > 0)
528 *d++ = '\\';
529 *d++ = '\\';
532 *d++ = *arg++;
534 *d++ = '"';
535 *d++ = 0;
536 return q;
539 static const char *parse_interpreter(const char *cmd)
541 static char buf[100];
542 char *p, *opt;
543 int n, fd;
545 /* don't even try a .exe */
546 n = strlen(cmd);
547 if (n >= 4 && !strcasecmp(cmd+n-4, ".exe"))
548 return NULL;
550 fd = open(cmd, O_RDONLY);
551 if (fd < 0)
552 return NULL;
553 n = read(fd, buf, sizeof(buf)-1);
554 close(fd);
555 if (n < 4) /* at least '#!/x' and not error */
556 return NULL;
558 if (buf[0] != '#' || buf[1] != '!')
559 return NULL;
560 buf[n] = '\0';
561 p = buf + strcspn(buf, "\r\n");
562 if (!*p)
563 return NULL;
565 *p = '\0';
566 if (!(p = strrchr(buf+2, '/')) && !(p = strrchr(buf+2, '\\')))
567 return NULL;
568 /* strip options */
569 if ((opt = strchr(p+1, ' ')))
570 *opt = '\0';
571 return p+1;
575 * Splits the PATH into parts.
577 static char **get_path_split(void)
579 char *p, **path, *envpath = getenv("PATH");
580 int i, n = 0;
582 if (!envpath || !*envpath)
583 return NULL;
585 envpath = xstrdup(envpath);
586 p = envpath;
587 while (p) {
588 char *dir = p;
589 p = strchr(p, ';');
590 if (p) *p++ = '\0';
591 if (*dir) { /* not earlier, catches series of ; */
592 ++n;
595 if (!n)
596 return NULL;
598 path = xmalloc((n+1)*sizeof(char *));
599 p = envpath;
600 i = 0;
601 do {
602 if (*p)
603 path[i++] = xstrdup(p);
604 p = p+strlen(p)+1;
605 } while (i < n);
606 path[i] = NULL;
608 free(envpath);
610 return path;
613 static void free_path_split(char **path)
615 char **p = path;
617 if (!path)
618 return;
620 while (*p)
621 free(*p++);
622 free(path);
626 * exe_only means that we only want to detect .exe files, but not scripts
627 * (which do not have an extension)
629 static char *lookup_prog(const char *dir, const char *cmd, int isexe, int exe_only)
631 char path[MAX_PATH];
632 snprintf(path, sizeof(path), "%s/%s.exe", dir, cmd);
634 if (!isexe && access(path, F_OK) == 0)
635 return xstrdup(path);
636 path[strlen(path)-4] = '\0';
637 if ((!exe_only || isexe) && access(path, F_OK) == 0)
638 if (!(GetFileAttributes(path) & FILE_ATTRIBUTE_DIRECTORY))
639 return xstrdup(path);
640 return NULL;
644 * Determines the absolute path of cmd using the the split path in path.
645 * If cmd contains a slash or backslash, no lookup is performed.
647 static char *path_lookup(const char *cmd, char **path, int exe_only)
649 char *prog = NULL;
650 int len = strlen(cmd);
651 int isexe = len >= 4 && !strcasecmp(cmd+len-4, ".exe");
653 if (strchr(cmd, '/') || strchr(cmd, '\\'))
654 prog = xstrdup(cmd);
656 while (!prog && *path)
657 prog = lookup_prog(*path++, cmd, isexe, exe_only);
659 return prog;
662 static int env_compare(const void *a, const void *b)
664 char *const *ea = a;
665 char *const *eb = b;
666 return strcasecmp(*ea, *eb);
669 static pid_t mingw_spawnve_fd(const char *cmd, const char **argv, char **env,
670 const char *dir,
671 int prepend_cmd, int fhin, int fhout, int fherr)
673 STARTUPINFO si;
674 PROCESS_INFORMATION pi;
675 struct strbuf envblk, args;
676 unsigned flags;
677 BOOL ret;
679 /* Determine whether or not we are associated to a console */
680 HANDLE cons = CreateFile("CONOUT$", GENERIC_WRITE,
681 FILE_SHARE_WRITE, NULL, OPEN_EXISTING,
682 FILE_ATTRIBUTE_NORMAL, NULL);
683 if (cons == INVALID_HANDLE_VALUE) {
684 /* There is no console associated with this process.
685 * Since the child is a console process, Windows
686 * would normally create a console window. But
687 * since we'll be redirecting std streams, we do
688 * not need the console.
689 * It is necessary to use DETACHED_PROCESS
690 * instead of CREATE_NO_WINDOW to make ssh
691 * recognize that it has no console.
693 flags = DETACHED_PROCESS;
694 } else {
695 /* There is already a console. If we specified
696 * DETACHED_PROCESS here, too, Windows would
697 * disassociate the child from the console.
698 * The same is true for CREATE_NO_WINDOW.
699 * Go figure!
701 flags = 0;
702 CloseHandle(cons);
704 memset(&si, 0, sizeof(si));
705 si.cb = sizeof(si);
706 si.dwFlags = STARTF_USESTDHANDLES;
707 si.hStdInput = (HANDLE) _get_osfhandle(fhin);
708 si.hStdOutput = (HANDLE) _get_osfhandle(fhout);
709 si.hStdError = (HANDLE) _get_osfhandle(fherr);
711 /* concatenate argv, quoting args as we go */
712 strbuf_init(&args, 0);
713 if (prepend_cmd) {
714 char *quoted = (char *)quote_arg(cmd);
715 strbuf_addstr(&args, quoted);
716 if (quoted != cmd)
717 free(quoted);
719 for (; *argv; argv++) {
720 char *quoted = (char *)quote_arg(*argv);
721 if (*args.buf)
722 strbuf_addch(&args, ' ');
723 strbuf_addstr(&args, quoted);
724 if (quoted != *argv)
725 free(quoted);
728 if (env) {
729 int count = 0;
730 char **e, **sorted_env;
732 for (e = env; *e; e++)
733 count++;
735 /* environment must be sorted */
736 sorted_env = xmalloc(sizeof(*sorted_env) * (count + 1));
737 memcpy(sorted_env, env, sizeof(*sorted_env) * (count + 1));
738 qsort(sorted_env, count, sizeof(*sorted_env), env_compare);
740 strbuf_init(&envblk, 0);
741 for (e = sorted_env; *e; e++) {
742 strbuf_addstr(&envblk, *e);
743 strbuf_addch(&envblk, '\0');
745 free(sorted_env);
748 memset(&pi, 0, sizeof(pi));
749 ret = CreateProcess(cmd, args.buf, NULL, NULL, TRUE, flags,
750 env ? envblk.buf : NULL, dir, &si, &pi);
752 if (env)
753 strbuf_release(&envblk);
754 strbuf_release(&args);
756 if (!ret) {
757 errno = ENOENT;
758 return -1;
760 CloseHandle(pi.hThread);
761 return (pid_t)pi.hProcess;
764 static pid_t mingw_spawnve(const char *cmd, const char **argv, char **env,
765 int prepend_cmd)
767 return mingw_spawnve_fd(cmd, argv, env, NULL, prepend_cmd, 0, 1, 2);
770 pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **env,
771 const char *dir,
772 int fhin, int fhout, int fherr)
774 pid_t pid;
775 char **path = get_path_split();
776 char *prog = path_lookup(cmd, path, 0);
778 if (!prog) {
779 errno = ENOENT;
780 pid = -1;
782 else {
783 const char *interpr = parse_interpreter(prog);
785 if (interpr) {
786 const char *argv0 = argv[0];
787 char *iprog = path_lookup(interpr, path, 1);
788 argv[0] = prog;
789 if (!iprog) {
790 errno = ENOENT;
791 pid = -1;
793 else {
794 pid = mingw_spawnve_fd(iprog, argv, env, dir, 1,
795 fhin, fhout, fherr);
796 free(iprog);
798 argv[0] = argv0;
800 else
801 pid = mingw_spawnve_fd(prog, argv, env, dir, 0,
802 fhin, fhout, fherr);
803 free(prog);
805 free_path_split(path);
806 return pid;
809 static int try_shell_exec(const char *cmd, char *const *argv, char **env)
811 const char *interpr = parse_interpreter(cmd);
812 char **path;
813 char *prog;
814 int pid = 0;
816 if (!interpr)
817 return 0;
818 path = get_path_split();
819 prog = path_lookup(interpr, path, 1);
820 if (prog) {
821 int argc = 0;
822 const char **argv2;
823 while (argv[argc]) argc++;
824 argv2 = xmalloc(sizeof(*argv) * (argc+1));
825 argv2[0] = (char *)cmd; /* full path to the script file */
826 memcpy(&argv2[1], &argv[1], sizeof(*argv) * argc);
827 pid = mingw_spawnve(prog, argv2, env, 1);
828 if (pid >= 0) {
829 int status;
830 if (waitpid(pid, &status, 0) < 0)
831 status = 255;
832 exit(status);
834 pid = 1; /* indicate that we tried but failed */
835 free(prog);
836 free(argv2);
838 free_path_split(path);
839 return pid;
842 static void mingw_execve(const char *cmd, char *const *argv, char *const *env)
844 /* check if git_command is a shell script */
845 if (!try_shell_exec(cmd, argv, (char **)env)) {
846 int pid, status;
848 pid = mingw_spawnve(cmd, (const char **)argv, (char **)env, 0);
849 if (pid < 0)
850 return;
851 if (waitpid(pid, &status, 0) < 0)
852 status = 255;
853 exit(status);
857 void mingw_execvp(const char *cmd, char *const *argv)
859 char **path = get_path_split();
860 char *prog = path_lookup(cmd, path, 0);
862 if (prog) {
863 mingw_execve(prog, argv, environ);
864 free(prog);
865 } else
866 errno = ENOENT;
868 free_path_split(path);
871 static char **copy_environ(void)
873 char **env;
874 int i = 0;
875 while (environ[i])
876 i++;
877 env = xmalloc((i+1)*sizeof(*env));
878 for (i = 0; environ[i]; i++)
879 env[i] = xstrdup(environ[i]);
880 env[i] = NULL;
881 return env;
884 void free_environ(char **env)
886 int i;
887 for (i = 0; env[i]; i++)
888 free(env[i]);
889 free(env);
892 static int lookup_env(char **env, const char *name, size_t nmln)
894 int i;
896 for (i = 0; env[i]; i++) {
897 if (0 == strncmp(env[i], name, nmln)
898 && '=' == env[i][nmln])
899 /* matches */
900 return i;
902 return -1;
906 * If name contains '=', then sets the variable, otherwise it unsets it
908 static char **env_setenv(char **env, const char *name)
910 char *eq = strchrnul(name, '=');
911 int i = lookup_env(env, name, eq-name);
913 if (i < 0) {
914 if (*eq) {
915 for (i = 0; env[i]; i++)
917 env = xrealloc(env, (i+2)*sizeof(*env));
918 env[i] = xstrdup(name);
919 env[i+1] = NULL;
922 else {
923 free(env[i]);
924 if (*eq)
925 env[i] = xstrdup(name);
926 else
927 for (; env[i]; i++)
928 env[i] = env[i+1];
930 return env;
934 * Copies global environ and adjusts variables as specified by vars.
936 char **make_augmented_environ(const char *const *vars)
938 char **env = copy_environ();
940 while (*vars)
941 env = env_setenv(env, *vars++);
942 return env;
946 * Note, this isn't a complete replacement for getaddrinfo. It assumes
947 * that service contains a numerical port, or that it it is null. It
948 * does a simple search using gethostbyname, and returns one IPv4 host
949 * if one was found.
951 static int WSAAPI getaddrinfo_stub(const char *node, const char *service,
952 const struct addrinfo *hints,
953 struct addrinfo **res)
955 struct hostent *h = gethostbyname(node);
956 struct addrinfo *ai;
957 struct sockaddr_in *sin;
959 if (!h)
960 return WSAGetLastError();
962 ai = xmalloc(sizeof(struct addrinfo));
963 *res = ai;
964 ai->ai_flags = 0;
965 ai->ai_family = AF_INET;
966 ai->ai_socktype = hints->ai_socktype;
967 switch (hints->ai_socktype) {
968 case SOCK_STREAM:
969 ai->ai_protocol = IPPROTO_TCP;
970 break;
971 case SOCK_DGRAM:
972 ai->ai_protocol = IPPROTO_UDP;
973 break;
974 default:
975 ai->ai_protocol = 0;
976 break;
978 ai->ai_addrlen = sizeof(struct sockaddr_in);
979 ai->ai_canonname = strdup(h->h_name);
981 sin = xmalloc(ai->ai_addrlen);
982 memset(sin, 0, ai->ai_addrlen);
983 sin->sin_family = AF_INET;
984 if (service)
985 sin->sin_port = htons(atoi(service));
986 sin->sin_addr = *(struct in_addr *)h->h_addr;
987 ai->ai_addr = (struct sockaddr *)sin;
988 ai->ai_next = 0;
989 return 0;
992 static void WSAAPI freeaddrinfo_stub(struct addrinfo *res)
994 free(res->ai_canonname);
995 free(res->ai_addr);
996 free(res);
999 static int WSAAPI getnameinfo_stub(const struct sockaddr *sa, socklen_t salen,
1000 char *host, DWORD hostlen,
1001 char *serv, DWORD servlen, int flags)
1003 const struct sockaddr_in *sin = (const struct sockaddr_in *)sa;
1004 if (sa->sa_family != AF_INET)
1005 return EAI_FAMILY;
1006 if (!host && !serv)
1007 return EAI_NONAME;
1009 if (host && hostlen > 0) {
1010 struct hostent *ent = NULL;
1011 if (!(flags & NI_NUMERICHOST))
1012 ent = gethostbyaddr((const char *)&sin->sin_addr,
1013 sizeof(sin->sin_addr), AF_INET);
1015 if (ent)
1016 snprintf(host, hostlen, "%s", ent->h_name);
1017 else if (flags & NI_NAMEREQD)
1018 return EAI_NONAME;
1019 else
1020 snprintf(host, hostlen, "%s", inet_ntoa(sin->sin_addr));
1023 if (serv && servlen > 0) {
1024 struct servent *ent = NULL;
1025 if (!(flags & NI_NUMERICSERV))
1026 ent = getservbyport(sin->sin_port,
1027 flags & NI_DGRAM ? "udp" : "tcp");
1029 if (ent)
1030 snprintf(serv, servlen, "%s", ent->s_name);
1031 else
1032 snprintf(serv, servlen, "%d", ntohs(sin->sin_port));
1035 return 0;
1038 static HMODULE ipv6_dll = NULL;
1039 static void (WSAAPI *ipv6_freeaddrinfo)(struct addrinfo *res);
1040 static int (WSAAPI *ipv6_getaddrinfo)(const char *node, const char *service,
1041 const struct addrinfo *hints,
1042 struct addrinfo **res);
1043 static int (WSAAPI *ipv6_getnameinfo)(const struct sockaddr *sa, socklen_t salen,
1044 char *host, DWORD hostlen,
1045 char *serv, DWORD servlen, int flags);
1047 * gai_strerror is an inline function in the ws2tcpip.h header, so we
1048 * don't need to try to load that one dynamically.
1051 static void socket_cleanup(void)
1053 WSACleanup();
1054 if (ipv6_dll)
1055 FreeLibrary(ipv6_dll);
1056 ipv6_dll = NULL;
1057 ipv6_freeaddrinfo = freeaddrinfo_stub;
1058 ipv6_getaddrinfo = getaddrinfo_stub;
1059 ipv6_getnameinfo = getnameinfo_stub;
1062 static void ensure_socket_initialization(void)
1064 WSADATA wsa;
1065 static int initialized = 0;
1066 const char *libraries[] = { "ws2_32.dll", "wship6.dll", NULL };
1067 const char **name;
1069 if (initialized)
1070 return;
1072 if (WSAStartup(MAKEWORD(2,2), &wsa))
1073 die("unable to initialize winsock subsystem, error %d",
1074 WSAGetLastError());
1076 for (name = libraries; *name; name++) {
1077 ipv6_dll = LoadLibrary(*name);
1078 if (!ipv6_dll)
1079 continue;
1081 ipv6_freeaddrinfo = (void (WSAAPI *)(struct addrinfo *))
1082 GetProcAddress(ipv6_dll, "freeaddrinfo");
1083 ipv6_getaddrinfo = (int (WSAAPI *)(const char *, const char *,
1084 const struct addrinfo *,
1085 struct addrinfo **))
1086 GetProcAddress(ipv6_dll, "getaddrinfo");
1087 ipv6_getnameinfo = (int (WSAAPI *)(const struct sockaddr *,
1088 socklen_t, char *, DWORD,
1089 char *, DWORD, int))
1090 GetProcAddress(ipv6_dll, "getnameinfo");
1091 if (!ipv6_freeaddrinfo || !ipv6_getaddrinfo || !ipv6_getnameinfo) {
1092 FreeLibrary(ipv6_dll);
1093 ipv6_dll = NULL;
1094 } else
1095 break;
1097 if (!ipv6_freeaddrinfo || !ipv6_getaddrinfo || !ipv6_getnameinfo) {
1098 ipv6_freeaddrinfo = freeaddrinfo_stub;
1099 ipv6_getaddrinfo = getaddrinfo_stub;
1100 ipv6_getnameinfo = getnameinfo_stub;
1103 atexit(socket_cleanup);
1104 initialized = 1;
1107 #undef gethostbyname
1108 struct hostent *mingw_gethostbyname(const char *host)
1110 ensure_socket_initialization();
1111 return gethostbyname(host);
1114 void mingw_freeaddrinfo(struct addrinfo *res)
1116 ipv6_freeaddrinfo(res);
1119 int mingw_getaddrinfo(const char *node, const char *service,
1120 const struct addrinfo *hints, struct addrinfo **res)
1122 ensure_socket_initialization();
1123 return ipv6_getaddrinfo(node, service, hints, res);
1126 int mingw_getnameinfo(const struct sockaddr *sa, socklen_t salen,
1127 char *host, DWORD hostlen, char *serv, DWORD servlen,
1128 int flags)
1130 ensure_socket_initialization();
1131 return ipv6_getnameinfo(sa, salen, host, hostlen, serv, servlen, flags);
1134 int mingw_socket(int domain, int type, int protocol)
1136 int sockfd;
1137 SOCKET s = WSASocket(domain, type, protocol, NULL, 0, 0);
1138 if (s == INVALID_SOCKET) {
1140 * WSAGetLastError() values are regular BSD error codes
1141 * biased by WSABASEERR.
1142 * However, strerror() does not know about networking
1143 * specific errors, which are values beginning at 38 or so.
1144 * Therefore, we choose to leave the biased error code
1145 * in errno so that _if_ someone looks up the code somewhere,
1146 * then it is at least the number that are usually listed.
1148 errno = WSAGetLastError();
1149 return -1;
1151 /* convert into a file descriptor */
1152 if ((sockfd = _open_osfhandle(s, O_RDWR|O_BINARY)) < 0) {
1153 closesocket(s);
1154 return error("unable to make a socket file descriptor: %s",
1155 strerror(errno));
1157 return sockfd;
1160 #undef connect
1161 int mingw_connect(int sockfd, struct sockaddr *sa, size_t sz)
1163 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
1164 return connect(s, sa, sz);
1167 #undef rename
1168 int mingw_rename(const char *pold, const char *pnew)
1170 DWORD attrs, gle;
1171 int tries = 0;
1172 static const int delay[] = { 0, 1, 10, 20, 40 };
1175 * Try native rename() first to get errno right.
1176 * It is based on MoveFile(), which cannot overwrite existing files.
1178 if (!rename(pold, pnew))
1179 return 0;
1180 if (errno != EEXIST)
1181 return -1;
1182 repeat:
1183 if (MoveFileEx(pold, pnew, MOVEFILE_REPLACE_EXISTING))
1184 return 0;
1185 /* TODO: translate more errors */
1186 gle = GetLastError();
1187 if (gle == ERROR_ACCESS_DENIED &&
1188 (attrs = GetFileAttributes(pnew)) != INVALID_FILE_ATTRIBUTES) {
1189 if (attrs & FILE_ATTRIBUTE_DIRECTORY) {
1190 errno = EISDIR;
1191 return -1;
1193 if ((attrs & FILE_ATTRIBUTE_READONLY) &&
1194 SetFileAttributes(pnew, attrs & ~FILE_ATTRIBUTE_READONLY)) {
1195 if (MoveFileEx(pold, pnew, MOVEFILE_REPLACE_EXISTING))
1196 return 0;
1197 gle = GetLastError();
1198 /* revert file attributes on failure */
1199 SetFileAttributes(pnew, attrs);
1202 if (tries < ARRAY_SIZE(delay) && gle == ERROR_ACCESS_DENIED) {
1204 * We assume that some other process had the source or
1205 * destination file open at the wrong moment and retry.
1206 * In order to give the other process a higher chance to
1207 * complete its operation, we give up our time slice now.
1208 * If we have to retry again, we do sleep a bit.
1210 Sleep(delay[tries]);
1211 tries++;
1212 goto repeat;
1214 errno = EACCES;
1215 return -1;
1219 * Note that this doesn't return the actual pagesize, but
1220 * the allocation granularity. If future Windows specific git code
1221 * needs the real getpagesize function, we need to find another solution.
1223 int mingw_getpagesize(void)
1225 SYSTEM_INFO si;
1226 GetSystemInfo(&si);
1227 return si.dwAllocationGranularity;
1230 struct passwd *getpwuid(int uid)
1232 static char user_name[100];
1233 static struct passwd p;
1235 DWORD len = sizeof(user_name);
1236 if (!GetUserName(user_name, &len))
1237 return NULL;
1238 p.pw_name = user_name;
1239 p.pw_gecos = "unknown";
1240 p.pw_dir = NULL;
1241 return &p;
1244 static HANDLE timer_event;
1245 static HANDLE timer_thread;
1246 static int timer_interval;
1247 static int one_shot;
1248 static sig_handler_t timer_fn = SIG_DFL;
1250 /* The timer works like this:
1251 * The thread, ticktack(), is a trivial routine that most of the time
1252 * only waits to receive the signal to terminate. The main thread tells
1253 * the thread to terminate by setting the timer_event to the signalled
1254 * state.
1255 * But ticktack() interrupts the wait state after the timer's interval
1256 * length to call the signal handler.
1259 static unsigned __stdcall ticktack(void *dummy)
1261 while (WaitForSingleObject(timer_event, timer_interval) == WAIT_TIMEOUT) {
1262 if (timer_fn == SIG_DFL)
1263 die("Alarm");
1264 if (timer_fn != SIG_IGN)
1265 timer_fn(SIGALRM);
1266 if (one_shot)
1267 break;
1269 return 0;
1272 static int start_timer_thread(void)
1274 timer_event = CreateEvent(NULL, FALSE, FALSE, NULL);
1275 if (timer_event) {
1276 timer_thread = (HANDLE) _beginthreadex(NULL, 0, ticktack, NULL, 0, NULL);
1277 if (!timer_thread )
1278 return errno = ENOMEM,
1279 error("cannot start timer thread");
1280 } else
1281 return errno = ENOMEM,
1282 error("cannot allocate resources for timer");
1283 return 0;
1286 static void stop_timer_thread(void)
1288 if (timer_event)
1289 SetEvent(timer_event); /* tell thread to terminate */
1290 if (timer_thread) {
1291 int rc = WaitForSingleObject(timer_thread, 1000);
1292 if (rc == WAIT_TIMEOUT)
1293 error("timer thread did not terminate timely");
1294 else if (rc != WAIT_OBJECT_0)
1295 error("waiting for timer thread failed: %lu",
1296 GetLastError());
1297 CloseHandle(timer_thread);
1299 if (timer_event)
1300 CloseHandle(timer_event);
1301 timer_event = NULL;
1302 timer_thread = NULL;
1305 static inline int is_timeval_eq(const struct timeval *i1, const struct timeval *i2)
1307 return i1->tv_sec == i2->tv_sec && i1->tv_usec == i2->tv_usec;
1310 int setitimer(int type, struct itimerval *in, struct itimerval *out)
1312 static const struct timeval zero;
1313 static int atexit_done;
1315 if (out != NULL)
1316 return errno = EINVAL,
1317 error("setitimer param 3 != NULL not implemented");
1318 if (!is_timeval_eq(&in->it_interval, &zero) &&
1319 !is_timeval_eq(&in->it_interval, &in->it_value))
1320 return errno = EINVAL,
1321 error("setitimer: it_interval must be zero or eq it_value");
1323 if (timer_thread)
1324 stop_timer_thread();
1326 if (is_timeval_eq(&in->it_value, &zero) &&
1327 is_timeval_eq(&in->it_interval, &zero))
1328 return 0;
1330 timer_interval = in->it_value.tv_sec * 1000 + in->it_value.tv_usec / 1000;
1331 one_shot = is_timeval_eq(&in->it_interval, &zero);
1332 if (!atexit_done) {
1333 atexit(stop_timer_thread);
1334 atexit_done = 1;
1336 return start_timer_thread();
1339 int sigaction(int sig, struct sigaction *in, struct sigaction *out)
1341 if (sig != SIGALRM)
1342 return errno = EINVAL,
1343 error("sigaction only implemented for SIGALRM");
1344 if (out != NULL)
1345 return errno = EINVAL,
1346 error("sigaction: param 3 != NULL not implemented");
1348 timer_fn = in->sa_handler;
1349 return 0;
1352 #undef signal
1353 sig_handler_t mingw_signal(int sig, sig_handler_t handler)
1355 sig_handler_t old = timer_fn;
1356 if (sig != SIGALRM)
1357 return signal(sig, handler);
1358 timer_fn = handler;
1359 return old;
1362 static const char *make_backslash_path(const char *path)
1364 static char buf[PATH_MAX + 1];
1365 char *c;
1367 if (strlcpy(buf, path, PATH_MAX) >= PATH_MAX)
1368 die("Too long path: %.*s", 60, path);
1370 for (c = buf; *c; c++) {
1371 if (*c == '/')
1372 *c = '\\';
1374 return buf;
1377 void mingw_open_html(const char *unixpath)
1379 const char *htmlpath = make_backslash_path(unixpath);
1380 typedef HINSTANCE (WINAPI *T)(HWND, const char *,
1381 const char *, const char *, const char *, INT);
1382 T ShellExecute;
1383 HMODULE shell32;
1385 shell32 = LoadLibrary("shell32.dll");
1386 if (!shell32)
1387 die("cannot load shell32.dll");
1388 ShellExecute = (T)GetProcAddress(shell32, "ShellExecuteA");
1389 if (!ShellExecute)
1390 die("cannot run browser");
1392 printf("Launching default browser to display HTML ...\n");
1393 ShellExecute(NULL, "open", htmlpath, NULL, "\\", 0);
1395 FreeLibrary(shell32);
1398 int link(const char *oldpath, const char *newpath)
1400 typedef BOOL (WINAPI *T)(const char*, const char*, LPSECURITY_ATTRIBUTES);
1401 static T create_hard_link = NULL;
1402 if (!create_hard_link) {
1403 create_hard_link = (T) GetProcAddress(
1404 GetModuleHandle("kernel32.dll"), "CreateHardLinkA");
1405 if (!create_hard_link)
1406 create_hard_link = (T)-1;
1408 if (create_hard_link == (T)-1) {
1409 errno = ENOSYS;
1410 return -1;
1412 if (!create_hard_link(newpath, oldpath, NULL)) {
1413 errno = err_win_to_posix(GetLastError());
1414 return -1;
1416 return 0;
1419 char *getpass(const char *prompt)
1421 struct strbuf buf = STRBUF_INIT;
1423 fputs(prompt, stderr);
1424 for (;;) {
1425 char c = _getch();
1426 if (c == '\r' || c == '\n')
1427 break;
1428 strbuf_addch(&buf, c);
1430 fputs("\n", stderr);
1431 return strbuf_detach(&buf, NULL);
1434 #ifndef NO_MINGW_REPLACE_READDIR
1435 /* MinGW readdir implementation to avoid extra lstats for Git */
1436 struct mingw_DIR
1438 struct _finddata_t dd_dta; /* disk transfer area for this dir */
1439 struct mingw_dirent dd_dir; /* Our own implementation, including d_type */
1440 long dd_handle; /* _findnext handle */
1441 int dd_stat; /* 0 = next entry to read is first entry, -1 = off the end, positive = 0 based index of next entry */
1442 char dd_name[1]; /* given path for dir with search pattern (struct is extended) */
1445 struct dirent *mingw_readdir(DIR *dir)
1447 WIN32_FIND_DATAA buf;
1448 HANDLE handle;
1449 struct mingw_DIR *mdir = (struct mingw_DIR*)dir;
1451 if (!dir->dd_handle) {
1452 errno = EBADF; /* No set_errno for mingw */
1453 return NULL;
1456 if (dir->dd_handle == (long)INVALID_HANDLE_VALUE && dir->dd_stat == 0)
1458 DWORD lasterr;
1459 handle = FindFirstFileA(dir->dd_name, &buf);
1460 lasterr = GetLastError();
1461 dir->dd_handle = (long)handle;
1462 if (handle == INVALID_HANDLE_VALUE && (lasterr != ERROR_NO_MORE_FILES)) {
1463 errno = err_win_to_posix(lasterr);
1464 return NULL;
1466 } else if (dir->dd_handle == (long)INVALID_HANDLE_VALUE) {
1467 return NULL;
1468 } else if (!FindNextFileA((HANDLE)dir->dd_handle, &buf)) {
1469 DWORD lasterr = GetLastError();
1470 FindClose((HANDLE)dir->dd_handle);
1471 dir->dd_handle = (long)INVALID_HANDLE_VALUE;
1472 /* POSIX says you shouldn't set errno when readdir can't
1473 find any more files; so, if another error we leave it set. */
1474 if (lasterr != ERROR_NO_MORE_FILES)
1475 errno = err_win_to_posix(lasterr);
1476 return NULL;
1479 /* We get here if `buf' contains valid data. */
1480 strcpy(dir->dd_dir.d_name, buf.cFileName);
1481 ++dir->dd_stat;
1483 /* Set file type, based on WIN32_FIND_DATA */
1484 mdir->dd_dir.d_type = 0;
1485 if (buf.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
1486 mdir->dd_dir.d_type |= DT_DIR;
1487 else
1488 mdir->dd_dir.d_type |= DT_REG;
1490 return (struct dirent*)&dir->dd_dir;
1492 #endif // !NO_MINGW_REPLACE_READDIR