0d73f15fa894cb0ded20f0cdd1f7fec3da1643f1
1#include "../git-compat-util.h"
2#include "win32.h"
3#include <conio.h>
4#include "../strbuf.h"
5#include <shellapi.h>
7static int err_win_to_posix(DWORD winerr)
9{
10 int error = ENOSYS;
11 switch(winerr) {
12 case ERROR_ACCESS_DENIED: error = EACCES; break;
13 case ERROR_ACCOUNT_DISABLED: error = EACCES; break;
14 case ERROR_ACCOUNT_RESTRICTION: error = EACCES; break;
15 case ERROR_ALREADY_ASSIGNED: error = EBUSY; break;
16 case ERROR_ALREADY_EXISTS: error = EEXIST; break;
17 case ERROR_ARITHMETIC_OVERFLOW: error = ERANGE; break;
18 case ERROR_BAD_COMMAND: error = EIO; break;
19 case ERROR_BAD_DEVICE: error = ENODEV; break;
20 case ERROR_BAD_DRIVER_LEVEL: error = ENXIO; break;
21 case ERROR_BAD_EXE_FORMAT: error = ENOEXEC; break;
22 case ERROR_BAD_FORMAT: error = ENOEXEC; break;
23 case ERROR_BAD_LENGTH: error = EINVAL; break;
24 case ERROR_BAD_PATHNAME: error = ENOENT; break;
25 case ERROR_BAD_PIPE: error = EPIPE; break;
26 case ERROR_BAD_UNIT: error = ENODEV; break;
27 case ERROR_BAD_USERNAME: error = EINVAL; break;
28 case ERROR_BROKEN_PIPE: error = EPIPE; break;
29 case ERROR_BUFFER_OVERFLOW: error = ENAMETOOLONG; break;
30 case ERROR_BUSY: error = EBUSY; break;
31 case ERROR_BUSY_DRIVE: error = EBUSY; break;
32 case ERROR_CALL_NOT_IMPLEMENTED: error = ENOSYS; break;
33 case ERROR_CANNOT_MAKE: error = EACCES; break;
34 case ERROR_CANTOPEN: error = EIO; break;
35 case ERROR_CANTREAD: error = EIO; break;
36 case ERROR_CANTWRITE: error = EIO; break;
37 case ERROR_CRC: error = EIO; break;
38 case ERROR_CURRENT_DIRECTORY: error = EACCES; break;
39 case ERROR_DEVICE_IN_USE: error = EBUSY; break;
40 case ERROR_DEV_NOT_EXIST: error = ENODEV; break;
41 case ERROR_DIRECTORY: error = EINVAL; break;
42 case ERROR_DIR_NOT_EMPTY: error = ENOTEMPTY; break;
43 case ERROR_DISK_CHANGE: error = EIO; break;
44 case ERROR_DISK_FULL: error = ENOSPC; break;
45 case ERROR_DRIVE_LOCKED: error = EBUSY; break;
46 case ERROR_ENVVAR_NOT_FOUND: error = EINVAL; break;
47 case ERROR_EXE_MARKED_INVALID: error = ENOEXEC; break;
48 case ERROR_FILENAME_EXCED_RANGE: error = ENAMETOOLONG; break;
49 case ERROR_FILE_EXISTS: error = EEXIST; break;
50 case ERROR_FILE_INVALID: error = ENODEV; break;
51 case ERROR_FILE_NOT_FOUND: error = ENOENT; break;
52 case ERROR_GEN_FAILURE: error = EIO; break;
53 case ERROR_HANDLE_DISK_FULL: error = ENOSPC; break;
54 case ERROR_INSUFFICIENT_BUFFER: error = ENOMEM; break;
55 case ERROR_INVALID_ACCESS: error = EACCES; break;
56 case ERROR_INVALID_ADDRESS: error = EFAULT; break;
57 case ERROR_INVALID_BLOCK: error = EFAULT; break;
58 case ERROR_INVALID_DATA: error = EINVAL; break;
59 case ERROR_INVALID_DRIVE: error = ENODEV; break;
60 case ERROR_INVALID_EXE_SIGNATURE: error = ENOEXEC; break;
61 case ERROR_INVALID_FLAGS: error = EINVAL; break;
62 case ERROR_INVALID_FUNCTION: error = ENOSYS; break;
63 case ERROR_INVALID_HANDLE: error = EBADF; break;
64 case ERROR_INVALID_LOGON_HOURS: error = EACCES; break;
65 case ERROR_INVALID_NAME: error = EINVAL; break;
66 case ERROR_INVALID_OWNER: error = EINVAL; break;
67 case ERROR_INVALID_PARAMETER: error = EINVAL; break;
68 case ERROR_INVALID_PASSWORD: error = EPERM; break;
69 case ERROR_INVALID_PRIMARY_GROUP: error = EINVAL; break;
70 case ERROR_INVALID_SIGNAL_NUMBER: error = EINVAL; break;
71 case ERROR_INVALID_TARGET_HANDLE: error = EIO; break;
72 case ERROR_INVALID_WORKSTATION: error = EACCES; break;
73 case ERROR_IO_DEVICE: error = EIO; break;
74 case ERROR_IO_INCOMPLETE: error = EINTR; break;
75 case ERROR_LOCKED: error = EBUSY; break;
76 case ERROR_LOCK_VIOLATION: error = EACCES; break;
77 case ERROR_LOGON_FAILURE: error = EACCES; break;
78 case ERROR_MAPPED_ALIGNMENT: error = EINVAL; break;
79 case ERROR_META_EXPANSION_TOO_LONG: error = E2BIG; break;
80 case ERROR_MORE_DATA: error = EPIPE; break;
81 case ERROR_NEGATIVE_SEEK: error = ESPIPE; break;
82 case ERROR_NOACCESS: error = EFAULT; break;
83 case ERROR_NONE_MAPPED: error = EINVAL; break;
84 case ERROR_NOT_ENOUGH_MEMORY: error = ENOMEM; break;
85 case ERROR_NOT_READY: error = EAGAIN; break;
86 case ERROR_NOT_SAME_DEVICE: error = EXDEV; break;
87 case ERROR_NO_DATA: error = EPIPE; break;
88 case ERROR_NO_MORE_SEARCH_HANDLES: error = EIO; break;
89 case ERROR_NO_PROC_SLOTS: error = EAGAIN; break;
90 case ERROR_NO_SUCH_PRIVILEGE: error = EACCES; break;
91 case ERROR_OPEN_FAILED: error = EIO; break;
92 case ERROR_OPEN_FILES: error = EBUSY; break;
93 case ERROR_OPERATION_ABORTED: error = EINTR; break;
94 case ERROR_OUTOFMEMORY: error = ENOMEM; break;
95 case ERROR_PASSWORD_EXPIRED: error = EACCES; break;
96 case ERROR_PATH_BUSY: error = EBUSY; break;
97 case ERROR_PATH_NOT_FOUND: error = ENOENT; break;
98 case ERROR_PIPE_BUSY: error = EBUSY; break;
99 case ERROR_PIPE_CONNECTED: error = EPIPE; break;
100 case ERROR_PIPE_LISTENING: error = EPIPE; break;
101 case ERROR_PIPE_NOT_CONNECTED: error = EPIPE; break;
102 case ERROR_PRIVILEGE_NOT_HELD: error = EACCES; break;
103 case ERROR_READ_FAULT: error = EIO; break;
104 case ERROR_SEEK: error = EIO; break;
105 case ERROR_SEEK_ON_DEVICE: error = ESPIPE; break;
106 case ERROR_SHARING_BUFFER_EXCEEDED: error = ENFILE; break;
107 case ERROR_SHARING_VIOLATION: error = EACCES; break;
108 case ERROR_STACK_OVERFLOW: error = ENOMEM; break;
109 case ERROR_SWAPERROR: error = ENOENT; break;
110 case ERROR_TOO_MANY_MODULES: error = EMFILE; break;
111 case ERROR_TOO_MANY_OPEN_FILES: error = EMFILE; break;
112 case ERROR_UNRECOGNIZED_MEDIA: error = ENXIO; break;
113 case ERROR_UNRECOGNIZED_VOLUME: error = ENODEV; break;
114 case ERROR_WAIT_NO_CHILDREN: error = ECHILD; break;
115 case ERROR_WRITE_FAULT: error = EIO; break;
116 case ERROR_WRITE_PROTECT: error = EROFS; break;
117 }
118 return error;
119}
120#undef open
122int mingw_open (const char *filename, int oflags, ...)
123{
124 va_list args;
125 unsigned mode;
126 int fd;
127 va_start(args, oflags);
129 mode = va_arg(args, int);
130 va_end(args);
131 if (!strcmp(filename, "/dev/null"))
133 filename = "nul";
134 fd = open(filename, oflags, mode);
136 if (fd < 0 && (oflags & O_CREAT) && errno == EACCES) {
138 DWORD attrs = GetFileAttributes(filename);
139 if (attrs != INVALID_FILE_ATTRIBUTES && (attrs & FILE_ATTRIBUTE_DIRECTORY))
140 errno = EISDIR;
141 }
142 return fd;
143}
144static inline time_t filetime_to_time_t(const FILETIME *ft)
146{
147 long long winTime = ((long long)ft->dwHighDateTime << 32) + ft->dwLowDateTime;
148 winTime -= 116444736000000000LL; /* Windows to Unix Epoch conversion */
149 winTime /= 10000000; /* Nano to seconds resolution */
150 return (time_t)winTime;
151}
152/* We keep the do_lstat code in a separate function to avoid recursion.
154 * When a path ends with a slash, the stat will fail with ENOENT. In
155 * this case, we strip the trailing slashes and stat again.
156 */
157static int do_lstat(const char *file_name, struct stat *buf)
158{
159 WIN32_FILE_ATTRIBUTE_DATA fdata;
160 if (!(errno = get_file_attr(file_name, &fdata))) {
162 buf->st_ino = 0;
163 buf->st_gid = 0;
164 buf->st_uid = 0;
165 buf->st_nlink = 1;
166 buf->st_mode = file_attr_to_st_mode(fdata.dwFileAttributes);
167 buf->st_size = fdata.nFileSizeLow |
168 (((off_t)fdata.nFileSizeHigh)<<32);
169 buf->st_dev = buf->st_rdev = 0; /* not used by Git */
170 buf->st_atime = filetime_to_time_t(&(fdata.ftLastAccessTime));
171 buf->st_mtime = filetime_to_time_t(&(fdata.ftLastWriteTime));
172 buf->st_ctime = filetime_to_time_t(&(fdata.ftCreationTime));
173 return 0;
174 }
175 return -1;
176}
177/* We provide our own lstat/fstat functions, since the provided
179 * lstat/fstat functions are so slow. These stat functions are
180 * tailored for Git's usage (read: fast), and are not meant to be
181 * complete. Note that Git stat()s are redirected to mingw_lstat()
182 * too, since Windows doesn't really handle symlinks that well.
183 */
184int mingw_lstat(const char *file_name, struct stat *buf)
185{
186 int namelen;
187 static char alt_name[PATH_MAX];
188 if (!do_lstat(file_name, buf))
190 return 0;
191 /* if file_name ended in a '/', Windows returned ENOENT;
193 * try again without trailing slashes
194 */
195 if (errno != ENOENT)
196 return -1;
197 namelen = strlen(file_name);
199 if (namelen && file_name[namelen-1] != '/')
200 return -1;
201 while (namelen && file_name[namelen-1] == '/')
202 --namelen;
203 if (!namelen || namelen >= PATH_MAX)
204 return -1;
205 memcpy(alt_name, file_name, namelen);
207 alt_name[namelen] = 0;
208 return do_lstat(alt_name, buf);
209}
210#undef fstat
212int mingw_fstat(int fd, struct stat *buf)
213{
214 HANDLE fh = (HANDLE)_get_osfhandle(fd);
215 BY_HANDLE_FILE_INFORMATION fdata;
216 if (fh == INVALID_HANDLE_VALUE) {
218 errno = EBADF;
219 return -1;
220 }
221 /* direct non-file handles to MS's fstat() */
222 if (GetFileType(fh) != FILE_TYPE_DISK)
223 return _fstati64(fd, buf);
224 if (GetFileInformationByHandle(fh, &fdata)) {
226 buf->st_ino = 0;
227 buf->st_gid = 0;
228 buf->st_uid = 0;
229 buf->st_nlink = 1;
230 buf->st_mode = file_attr_to_st_mode(fdata.dwFileAttributes);
231 buf->st_size = fdata.nFileSizeLow |
232 (((off_t)fdata.nFileSizeHigh)<<32);
233 buf->st_dev = buf->st_rdev = 0; /* not used by Git */
234 buf->st_atime = filetime_to_time_t(&(fdata.ftLastAccessTime));
235 buf->st_mtime = filetime_to_time_t(&(fdata.ftLastWriteTime));
236 buf->st_ctime = filetime_to_time_t(&(fdata.ftCreationTime));
237 return 0;
238 }
239 errno = EBADF;
240 return -1;
241}
242static inline void time_t_to_filetime(time_t t, FILETIME *ft)
244{
245 long long winTime = t * 10000000LL + 116444736000000000LL;
246 ft->dwLowDateTime = winTime;
247 ft->dwHighDateTime = winTime >> 32;
248}
249int mingw_utime (const char *file_name, const struct utimbuf *times)
251{
252 FILETIME mft, aft;
253 int fh, rc;
254 /* must have write permission */
256 if ((fh = open(file_name, O_RDWR | O_BINARY)) < 0)
257 return -1;
258 time_t_to_filetime(times->modtime, &mft);
260 time_t_to_filetime(times->actime, &aft);
261 if (!SetFileTime((HANDLE)_get_osfhandle(fh), NULL, &aft, &mft)) {
262 errno = EINVAL;
263 rc = -1;
264 } else
265 rc = 0;
266 close(fh);
267 return rc;
268}
269unsigned int sleep (unsigned int seconds)
271{
272 Sleep(seconds*1000);
273 return 0;
274}
275int mkstemp(char *template)
277{
278 char *filename = mktemp(template);
279 if (filename == NULL)
280 return -1;
281 return open(filename, O_RDWR | O_CREAT, 0600);
282}
283int gettimeofday(struct timeval *tv, void *tz)
285{
286 SYSTEMTIME st;
287 struct tm tm;
288 GetSystemTime(&st);
289 tm.tm_year = st.wYear-1900;
290 tm.tm_mon = st.wMonth-1;
291 tm.tm_mday = st.wDay;
292 tm.tm_hour = st.wHour;
293 tm.tm_min = st.wMinute;
294 tm.tm_sec = st.wSecond;
295 tv->tv_sec = tm_to_time_t(&tm);
296 if (tv->tv_sec < 0)
297 return -1;
298 tv->tv_usec = st.wMilliseconds*1000;
299 return 0;
300}
301int pipe(int filedes[2])
303{
304 int fd;
305 HANDLE h[2], parent;
306 if (_pipe(filedes, 8192, 0) < 0)
308 return -1;
309 parent = GetCurrentProcess();
311 if (!DuplicateHandle (parent, (HANDLE)_get_osfhandle(filedes[0]),
313 parent, &h[0], 0, FALSE, DUPLICATE_SAME_ACCESS)) {
314 close(filedes[0]);
315 close(filedes[1]);
316 return -1;
317 }
318 if (!DuplicateHandle (parent, (HANDLE)_get_osfhandle(filedes[1]),
319 parent, &h[1], 0, FALSE, DUPLICATE_SAME_ACCESS)) {
320 close(filedes[0]);
321 close(filedes[1]);
322 CloseHandle(h[0]);
323 return -1;
324 }
325 fd = _open_osfhandle((int)h[0], O_NOINHERIT);
326 if (fd < 0) {
327 close(filedes[0]);
328 close(filedes[1]);
329 CloseHandle(h[0]);
330 CloseHandle(h[1]);
331 return -1;
332 }
333 close(filedes[0]);
334 filedes[0] = fd;
335 fd = _open_osfhandle((int)h[1], O_NOINHERIT);
336 if (fd < 0) {
337 close(filedes[0]);
338 close(filedes[1]);
339 CloseHandle(h[1]);
340 return -1;
341 }
342 close(filedes[1]);
343 filedes[1] = fd;
344 return 0;
345}
346int poll(struct pollfd *ufds, unsigned int nfds, int timeout)
348{
349 int i, pending;
350 if (timeout >= 0) {
352 if (nfds == 0) {
353 Sleep(timeout);
354 return 0;
355 }
356 return errno = EINVAL, error("poll timeout not supported");
357 }
358 /* When there is only one fd to wait for, then we pretend that
360 * input is available and let the actual wait happen when the
361 * caller invokes read().
362 */
363 if (nfds == 1) {
364 if (!(ufds[0].events & POLLIN))
365 return errno = EINVAL, error("POLLIN not set");
366 ufds[0].revents = POLLIN;
367 return 0;
368 }
369repeat:
371 pending = 0;
372 for (i = 0; i < nfds; i++) {
373 DWORD avail = 0;
374 HANDLE h = (HANDLE) _get_osfhandle(ufds[i].fd);
375 if (h == INVALID_HANDLE_VALUE)
376 return -1; /* errno was set */
377 if (!(ufds[i].events & POLLIN))
379 return errno = EINVAL, error("POLLIN not set");
380 /* this emulation works only for pipes */
382 if (!PeekNamedPipe(h, NULL, 0, NULL, &avail, NULL)) {
383 int err = GetLastError();
384 if (err == ERROR_BROKEN_PIPE) {
385 ufds[i].revents = POLLHUP;
386 pending++;
387 } else {
388 errno = EINVAL;
389 return error("PeekNamedPipe failed,"
390 " GetLastError: %u", err);
391 }
392 } else if (avail) {
393 ufds[i].revents = POLLIN;
394 pending++;
395 } else
396 ufds[i].revents = 0;
397 }
398 if (!pending) {
399 /* The only times that we spin here is when the process
400 * that is connected through the pipes is waiting for
401 * its own input data to become available. But since
402 * the process (pack-objects) is itself CPU intensive,
403 * it will happily pick up the time slice that we are
404 * relinquishing here.
405 */
406 Sleep(0);
407 goto repeat;
408 }
409 return 0;
410}
411struct tm *gmtime_r(const time_t *timep, struct tm *result)
413{
414 /* gmtime() in MSVCRT.DLL is thread-safe, but not reentrant */
415 memcpy(result, gmtime(timep), sizeof(struct tm));
416 return result;
417}
418struct tm *localtime_r(const time_t *timep, struct tm *result)
420{
421 /* localtime() in MSVCRT.DLL is thread-safe, but not reentrant */
422 memcpy(result, localtime(timep), sizeof(struct tm));
423 return result;
424}
425#undef getcwd
427char *mingw_getcwd(char *pointer, int len)
428{
429 int i;
430 char *ret = getcwd(pointer, len);
431 if (!ret)
432 return ret;
433 for (i = 0; pointer[i]; i++)
434 if (pointer[i] == '\\')
435 pointer[i] = '/';
436 return ret;
437}
438#undef getenv
440char *mingw_getenv(const char *name)
441{
442 char *result = getenv(name);
443 if (!result && !strcmp(name, "TMPDIR")) {
444 /* on Windows it is TMP and TEMP */
445 result = getenv("TMP");
446 if (!result)
447 result = getenv("TEMP");
448 }
449 return result;
450}
451/*
453 * See http://msdn2.microsoft.com/en-us/library/17w5ykft(vs.71).aspx
454 * (Parsing C++ Command-Line Arguments)
455 */
456static const char *quote_arg(const char *arg)
457{
458 /* count chars to quote */
459 int len = 0, n = 0;
460 int force_quotes = 0;
461 char *q, *d;
462 const char *p = arg;
463 if (!*p) force_quotes = 1;
464 while (*p) {
465 if (isspace(*p) || *p == '*' || *p == '?' || *p == '{' || *p == '\'')
466 force_quotes = 1;
467 else if (*p == '"')
468 n++;
469 else if (*p == '\\') {
470 int count = 0;
471 while (*p == '\\') {
472 count++;
473 p++;
474 len++;
475 }
476 if (*p == '"')
477 n += count*2 + 1;
478 continue;
479 }
480 len++;
481 p++;
482 }
483 if (!force_quotes && n == 0)
484 return arg;
485 /* insert \ where necessary */
487 d = q = xmalloc(len+n+3);
488 *d++ = '"';
489 while (*arg) {
490 if (*arg == '"')
491 *d++ = '\\';
492 else if (*arg == '\\') {
493 int count = 0;
494 while (*arg == '\\') {
495 count++;
496 *d++ = *arg++;
497 }
498 if (*arg == '"') {
499 while (count-- > 0)
500 *d++ = '\\';
501 *d++ = '\\';
502 }
503 }
504 *d++ = *arg++;
505 }
506 *d++ = '"';
507 *d++ = 0;
508 return q;
509}
510static const char *parse_interpreter(const char *cmd)
512{
513 static char buf[100];
514 char *p, *opt;
515 int n, fd;
516 /* don't even try a .exe */
518 n = strlen(cmd);
519 if (n >= 4 && !strcasecmp(cmd+n-4, ".exe"))
520 return NULL;
521 fd = open(cmd, O_RDONLY);
523 if (fd < 0)
524 return NULL;
525 n = read(fd, buf, sizeof(buf)-1);
526 close(fd);
527 if (n < 4) /* at least '#!/x' and not error */
528 return NULL;
529 if (buf[0] != '#' || buf[1] != '!')
531 return NULL;
532 buf[n] = '\0';
533 p = buf + strcspn(buf, "\r\n");
534 if (!*p)
535 return NULL;
536 *p = '\0';
538 if (!(p = strrchr(buf+2, '/')) && !(p = strrchr(buf+2, '\\')))
539 return NULL;
540 /* strip options */
541 if ((opt = strchr(p+1, ' ')))
542 *opt = '\0';
543 return p+1;
544}
545/*
547 * Splits the PATH into parts.
548 */
549static char **get_path_split(void)
550{
551 char *p, **path, *envpath = getenv("PATH");
552 int i, n = 0;
553 if (!envpath || !*envpath)
555 return NULL;
556 envpath = xstrdup(envpath);
558 p = envpath;
559 while (p) {
560 char *dir = p;
561 p = strchr(p, ';');
562 if (p) *p++ = '\0';
563 if (*dir) { /* not earlier, catches series of ; */
564 ++n;
565 }
566 }
567 if (!n)
568 return NULL;
569 path = xmalloc((n+1)*sizeof(char *));
571 p = envpath;
572 i = 0;
573 do {
574 if (*p)
575 path[i++] = xstrdup(p);
576 p = p+strlen(p)+1;
577 } while (i < n);
578 path[i] = NULL;
579 free(envpath);
581 return path;
583}
584static void free_path_split(char **path)
586{
587 char **p = path;
588 if (!path)
590 return;
591 while (*p)
593 free(*p++);
594 free(path);
595}
596/*
598 * exe_only means that we only want to detect .exe files, but not scripts
599 * (which do not have an extension)
600 */
601static char *lookup_prog(const char *dir, const char *cmd, int isexe, int exe_only)
602{
603 char path[MAX_PATH];
604 snprintf(path, sizeof(path), "%s/%s.exe", dir, cmd);
605 if (!isexe && access(path, F_OK) == 0)
607 return xstrdup(path);
608 path[strlen(path)-4] = '\0';
609 if ((!exe_only || isexe) && access(path, F_OK) == 0)
610 if (!(GetFileAttributes(path) & FILE_ATTRIBUTE_DIRECTORY))
611 return xstrdup(path);
612 return NULL;
613}
614/*
616 * Determines the absolute path of cmd using the the split path in path.
617 * If cmd contains a slash or backslash, no lookup is performed.
618 */
619static char *path_lookup(const char *cmd, char **path, int exe_only)
620{
621 char *prog = NULL;
622 int len = strlen(cmd);
623 int isexe = len >= 4 && !strcasecmp(cmd+len-4, ".exe");
624 if (strchr(cmd, '/') || strchr(cmd, '\\'))
626 prog = xstrdup(cmd);
627 while (!prog && *path)
629 prog = lookup_prog(*path++, cmd, isexe, exe_only);
630 return prog;
632}
633static int env_compare(const void *a, const void *b)
635{
636 char *const *ea = a;
637 char *const *eb = b;
638 return strcasecmp(*ea, *eb);
639}
640static pid_t mingw_spawnve(const char *cmd, const char **argv, char **env,
642 int prepend_cmd)
643{
644 STARTUPINFO si;
645 PROCESS_INFORMATION pi;
646 struct strbuf envblk, args;
647 unsigned flags;
648 BOOL ret;
649 /* Determine whether or not we are associated to a console */
651 HANDLE cons = CreateFile("CONOUT$", GENERIC_WRITE,
652 FILE_SHARE_WRITE, NULL, OPEN_EXISTING,
653 FILE_ATTRIBUTE_NORMAL, NULL);
654 if (cons == INVALID_HANDLE_VALUE) {
655 /* There is no console associated with this process.
656 * Since the child is a console process, Windows
657 * would normally create a console window. But
658 * since we'll be redirecting std streams, we do
659 * not need the console.
660 * It is necessary to use DETACHED_PROCESS
661 * instead of CREATE_NO_WINDOW to make ssh
662 * recognize that it has no console.
663 */
664 flags = DETACHED_PROCESS;
665 } else {
666 /* There is already a console. If we specified
667 * DETACHED_PROCESS here, too, Windows would
668 * disassociate the child from the console.
669 * The same is true for CREATE_NO_WINDOW.
670 * Go figure!
671 */
672 flags = 0;
673 CloseHandle(cons);
674 }
675 memset(&si, 0, sizeof(si));
676 si.cb = sizeof(si);
677 si.dwFlags = STARTF_USESTDHANDLES;
678 si.hStdInput = (HANDLE) _get_osfhandle(0);
679 si.hStdOutput = (HANDLE) _get_osfhandle(1);
680 si.hStdError = (HANDLE) _get_osfhandle(2);
681 /* concatenate argv, quoting args as we go */
683 strbuf_init(&args, 0);
684 if (prepend_cmd) {
685 char *quoted = (char *)quote_arg(cmd);
686 strbuf_addstr(&args, quoted);
687 if (quoted != cmd)
688 free(quoted);
689 }
690 for (; *argv; argv++) {
691 char *quoted = (char *)quote_arg(*argv);
692 if (*args.buf)
693 strbuf_addch(&args, ' ');
694 strbuf_addstr(&args, quoted);
695 if (quoted != *argv)
696 free(quoted);
697 }
698 if (env) {
700 int count = 0;
701 char **e, **sorted_env;
702 for (e = env; *e; e++)
704 count++;
705 /* environment must be sorted */
707 sorted_env = xmalloc(sizeof(*sorted_env) * (count + 1));
708 memcpy(sorted_env, env, sizeof(*sorted_env) * (count + 1));
709 qsort(sorted_env, count, sizeof(*sorted_env), env_compare);
710 strbuf_init(&envblk, 0);
712 for (e = sorted_env; *e; e++) {
713 strbuf_addstr(&envblk, *e);
714 strbuf_addch(&envblk, '\0');
715 }
716 free(sorted_env);
717 }
718 memset(&pi, 0, sizeof(pi));
720 ret = CreateProcess(cmd, args.buf, NULL, NULL, TRUE, flags,
721 env ? envblk.buf : NULL, NULL, &si, &pi);
722 if (env)
724 strbuf_release(&envblk);
725 strbuf_release(&args);
726 if (!ret) {
728 errno = ENOENT;
729 return -1;
730 }
731 CloseHandle(pi.hThread);
732 return (pid_t)pi.hProcess;
733}
734pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **env)
736{
737 pid_t pid;
738 char **path = get_path_split();
739 char *prog = path_lookup(cmd, path, 0);
740 if (!prog) {
742 errno = ENOENT;
743 pid = -1;
744 }
745 else {
746 const char *interpr = parse_interpreter(prog);
747 if (interpr) {
749 const char *argv0 = argv[0];
750 char *iprog = path_lookup(interpr, path, 1);
751 argv[0] = prog;
752 if (!iprog) {
753 errno = ENOENT;
754 pid = -1;
755 }
756 else {
757 pid = mingw_spawnve(iprog, argv, env, 1);
758 free(iprog);
759 }
760 argv[0] = argv0;
761 }
762 else
763 pid = mingw_spawnve(prog, argv, env, 0);
764 free(prog);
765 }
766 free_path_split(path);
767 return pid;
768}
769static int try_shell_exec(const char *cmd, char *const *argv, char **env)
771{
772 const char *interpr = parse_interpreter(cmd);
773 char **path;
774 char *prog;
775 int pid = 0;
776 if (!interpr)
778 return 0;
779 path = get_path_split();
780 prog = path_lookup(interpr, path, 1);
781 if (prog) {
782 int argc = 0;
783 const char **argv2;
784 while (argv[argc]) argc++;
785 argv2 = xmalloc(sizeof(*argv) * (argc+1));
786 argv2[0] = (char *)cmd; /* full path to the script file */
787 memcpy(&argv2[1], &argv[1], sizeof(*argv) * argc);
788 pid = mingw_spawnve(prog, argv2, env, 1);
789 if (pid >= 0) {
790 int status;
791 if (waitpid(pid, &status, 0) < 0)
792 status = 255;
793 exit(status);
794 }
795 pid = 1; /* indicate that we tried but failed */
796 free(prog);
797 free(argv2);
798 }
799 free_path_split(path);
800 return pid;
801}
802static void mingw_execve(const char *cmd, char *const *argv, char *const *env)
804{
805 /* check if git_command is a shell script */
806 if (!try_shell_exec(cmd, argv, (char **)env)) {
807 int pid, status;
808 pid = mingw_spawnve(cmd, (const char **)argv, (char **)env, 0);
810 if (pid < 0)
811 return;
812 if (waitpid(pid, &status, 0) < 0)
813 status = 255;
814 exit(status);
815 }
816}
817void mingw_execvp(const char *cmd, char *const *argv)
819{
820 char **path = get_path_split();
821 char *prog = path_lookup(cmd, path, 0);
822 if (prog) {
824 mingw_execve(prog, argv, environ);
825 free(prog);
826 } else
827 errno = ENOENT;
828 free_path_split(path);
830}
831static char **copy_environ(void)
833{
834 char **env;
835 int i = 0;
836 while (environ[i])
837 i++;
838 env = xmalloc((i+1)*sizeof(*env));
839 for (i = 0; environ[i]; i++)
840 env[i] = xstrdup(environ[i]);
841 env[i] = NULL;
842 return env;
843}
844void free_environ(char **env)
846{
847 int i;
848 for (i = 0; env[i]; i++)
849 free(env[i]);
850 free(env);
851}
852static int lookup_env(char **env, const char *name, size_t nmln)
854{
855 int i;
856 for (i = 0; env[i]; i++) {
858 if (0 == strncmp(env[i], name, nmln)
859 && '=' == env[i][nmln])
860 /* matches */
861 return i;
862 }
863 return -1;
864}
865/*
867 * If name contains '=', then sets the variable, otherwise it unsets it
868 */
869static char **env_setenv(char **env, const char *name)
870{
871 char *eq = strchrnul(name, '=');
872 int i = lookup_env(env, name, eq-name);
873 if (i < 0) {
875 if (*eq) {
876 for (i = 0; env[i]; i++)
877 ;
878 env = xrealloc(env, (i+2)*sizeof(*env));
879 env[i] = xstrdup(name);
880 env[i+1] = NULL;
881 }
882 }
883 else {
884 free(env[i]);
885 if (*eq)
886 env[i] = xstrdup(name);
887 else
888 for (; env[i]; i++)
889 env[i] = env[i+1];
890 }
891 return env;
892}
893/*
895 * Copies global environ and adjusts variables as specified by vars.
896 */
897char **make_augmented_environ(const char *const *vars)
898{
899 char **env = copy_environ();
900 while (*vars)
902 env = env_setenv(env, *vars++);
903 return env;
904}
905/*
907 * Note, this isn't a complete replacement for getaddrinfo. It assumes
908 * that service contains a numerical port, or that it it is null. It
909 * does a simple search using gethostbyname, and returns one IPv4 host
910 * if one was found.
911 */
912static int WSAAPI getaddrinfo_stub(const char *node, const char *service,
913 const struct addrinfo *hints,
914 struct addrinfo **res)
915{
916 struct hostent *h = gethostbyname(node);
917 struct addrinfo *ai;
918 struct sockaddr_in *sin;
919 if (!h)
921 return WSAGetLastError();
922 ai = xmalloc(sizeof(struct addrinfo));
924 *res = ai;
925 ai->ai_flags = 0;
926 ai->ai_family = AF_INET;
927 ai->ai_socktype = hints->ai_socktype;
928 switch (hints->ai_socktype) {
929 case SOCK_STREAM:
930 ai->ai_protocol = IPPROTO_TCP;
931 break;
932 case SOCK_DGRAM:
933 ai->ai_protocol = IPPROTO_UDP;
934 break;
935 default:
936 ai->ai_protocol = 0;
937 break;
938 }
939 ai->ai_addrlen = sizeof(struct sockaddr_in);
940 ai->ai_canonname = strdup(h->h_name);
941 sin = xmalloc(ai->ai_addrlen);
943 memset(sin, 0, ai->ai_addrlen);
944 sin->sin_family = AF_INET;
945 if (service)
946 sin->sin_port = htons(atoi(service));
947 sin->sin_addr = *(struct in_addr *)h->h_addr;
948 ai->ai_addr = (struct sockaddr *)sin;
949 ai->ai_next = 0;
950 return 0;
951}
952static void WSAAPI freeaddrinfo_stub(struct addrinfo *res)
954{
955 free(res->ai_canonname);
956 free(res->ai_addr);
957 free(res);
958}
959static int WSAAPI getnameinfo_stub(const struct sockaddr *sa, socklen_t salen,
961 char *host, DWORD hostlen,
962 char *serv, DWORD servlen, int flags)
963{
964 const struct sockaddr_in *sin = (const struct sockaddr_in *)sa;
965 if (sa->sa_family != AF_INET)
966 return EAI_FAMILY;
967 if (!host && !serv)
968 return EAI_NONAME;
969 if (host && hostlen > 0) {
971 struct hostent *ent = NULL;
972 if (!(flags & NI_NUMERICHOST))
973 ent = gethostbyaddr((const char *)&sin->sin_addr,
974 sizeof(sin->sin_addr), AF_INET);
975 if (ent)
977 snprintf(host, hostlen, "%s", ent->h_name);
978 else if (flags & NI_NAMEREQD)
979 return EAI_NONAME;
980 else
981 snprintf(host, hostlen, "%s", inet_ntoa(sin->sin_addr));
982 }
983 if (serv && servlen > 0) {
985 struct servent *ent = NULL;
986 if (!(flags & NI_NUMERICSERV))
987 ent = getservbyport(sin->sin_port,
988 flags & NI_DGRAM ? "udp" : "tcp");
989 if (ent)
991 snprintf(serv, servlen, "%s", ent->s_name);
992 else
993 snprintf(serv, servlen, "%d", ntohs(sin->sin_port));
994 }
995 return 0;
997}
998static HMODULE ipv6_dll = NULL;
1000static void (WSAAPI *ipv6_freeaddrinfo)(struct addrinfo *res);
1001static int (WSAAPI *ipv6_getaddrinfo)(const char *node, const char *service,
1002 const struct addrinfo *hints,
1003 struct addrinfo **res);
1004static int (WSAAPI *ipv6_getnameinfo)(const struct sockaddr *sa, socklen_t salen,
1005 char *host, DWORD hostlen,
1006 char *serv, DWORD servlen, int flags);
1007/*
1008 * gai_strerror is an inline function in the ws2tcpip.h header, so we
1009 * don't need to try to load that one dynamically.
1010 */
1011static void socket_cleanup(void)
1013{
1014 WSACleanup();
1015 if (ipv6_dll)
1016 FreeLibrary(ipv6_dll);
1017 ipv6_dll = NULL;
1018 ipv6_freeaddrinfo = freeaddrinfo_stub;
1019 ipv6_getaddrinfo = getaddrinfo_stub;
1020 ipv6_getnameinfo = getnameinfo_stub;
1021}
1022static void ensure_socket_initialization(void)
1024{
1025 WSADATA wsa;
1026 static int initialized = 0;
1027 const char *libraries[] = { "ws2_32.dll", "wship6.dll", NULL };
1028 const char **name;
1029 if (initialized)
1031 return;
1032 if (WSAStartup(MAKEWORD(2,2), &wsa))
1034 die("unable to initialize winsock subsystem, error %d",
1035 WSAGetLastError());
1036 for (name = libraries; *name; name++) {
1038 ipv6_dll = LoadLibrary(*name);
1039 if (!ipv6_dll)
1040 continue;
1041 ipv6_freeaddrinfo = (void (WSAAPI *)(struct addrinfo *))
1043 GetProcAddress(ipv6_dll, "freeaddrinfo");
1044 ipv6_getaddrinfo = (int (WSAAPI *)(const char *, const char *,
1045 const struct addrinfo *,
1046 struct addrinfo **))
1047 GetProcAddress(ipv6_dll, "getaddrinfo");
1048 ipv6_getnameinfo = (int (WSAAPI *)(const struct sockaddr *,
1049 socklen_t, char *, DWORD,
1050 char *, DWORD, int))
1051 GetProcAddress(ipv6_dll, "getnameinfo");
1052 if (!ipv6_freeaddrinfo || !ipv6_getaddrinfo || !ipv6_getnameinfo) {
1053 FreeLibrary(ipv6_dll);
1054 ipv6_dll = NULL;
1055 } else
1056 break;
1057 }
1058 if (!ipv6_freeaddrinfo || !ipv6_getaddrinfo || !ipv6_getnameinfo) {
1059 ipv6_freeaddrinfo = freeaddrinfo_stub;
1060 ipv6_getaddrinfo = getaddrinfo_stub;
1061 ipv6_getnameinfo = getnameinfo_stub;
1062 }
1063 atexit(socket_cleanup);
1065 initialized = 1;
1066}
1067#undef gethostbyname
1069struct hostent *mingw_gethostbyname(const char *host)
1070{
1071 ensure_socket_initialization();
1072 return gethostbyname(host);
1073}
1074void mingw_freeaddrinfo(struct addrinfo *res)
1076{
1077 ipv6_freeaddrinfo(res);
1078}
1079int mingw_getaddrinfo(const char *node, const char *service,
1081 const struct addrinfo *hints, struct addrinfo **res)
1082{
1083 ensure_socket_initialization();
1084 return ipv6_getaddrinfo(node, service, hints, res);
1085}
1086int mingw_getnameinfo(const struct sockaddr *sa, socklen_t salen,
1088 char *host, DWORD hostlen, char *serv, DWORD servlen,
1089 int flags)
1090{
1091 ensure_socket_initialization();
1092 return ipv6_getnameinfo(sa, salen, host, hostlen, serv, servlen, flags);
1093}
1094int mingw_socket(int domain, int type, int protocol)
1096{
1097 int sockfd;
1098 SOCKET s = WSASocket(domain, type, protocol, NULL, 0, 0);
1099 if (s == INVALID_SOCKET) {
1100 /*
1101 * WSAGetLastError() values are regular BSD error codes
1102 * biased by WSABASEERR.
1103 * However, strerror() does not know about networking
1104 * specific errors, which are values beginning at 38 or so.
1105 * Therefore, we choose to leave the biased error code
1106 * in errno so that _if_ someone looks up the code somewhere,
1107 * then it is at least the number that are usually listed.
1108 */
1109 errno = WSAGetLastError();
1110 return -1;
1111 }
1112 /* convert into a file descriptor */
1113 if ((sockfd = _open_osfhandle(s, O_RDWR|O_BINARY)) < 0) {
1114 closesocket(s);
1115 return error("unable to make a socket file descriptor: %s",
1116 strerror(errno));
1117 }
1118 return sockfd;
1119}
1120#undef connect
1122int mingw_connect(int sockfd, struct sockaddr *sa, size_t sz)
1123{
1124 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
1125 return connect(s, sa, sz);
1126}
1127#undef rename
1129int mingw_rename(const char *pold, const char *pnew)
1130{
1131 DWORD attrs, gle;
1132 int tries = 0;
1133 static const int delay[] = { 0, 1, 10, 20, 40 };
1134 /*
1136 * Try native rename() first to get errno right.
1137 * It is based on MoveFile(), which cannot overwrite existing files.
1138 */
1139 if (!rename(pold, pnew))
1140 return 0;
1141 if (errno != EEXIST)
1142 return -1;
1143repeat:
1144 if (MoveFileEx(pold, pnew, MOVEFILE_REPLACE_EXISTING))
1145 return 0;
1146 /* TODO: translate more errors */
1147 gle = GetLastError();
1148 if (gle == ERROR_ACCESS_DENIED &&
1149 (attrs = GetFileAttributes(pnew)) != INVALID_FILE_ATTRIBUTES) {
1150 if (attrs & FILE_ATTRIBUTE_DIRECTORY) {
1151 errno = EISDIR;
1152 return -1;
1153 }
1154 if ((attrs & FILE_ATTRIBUTE_READONLY) &&
1155 SetFileAttributes(pnew, attrs & ~FILE_ATTRIBUTE_READONLY)) {
1156 if (MoveFileEx(pold, pnew, MOVEFILE_REPLACE_EXISTING))
1157 return 0;
1158 gle = GetLastError();
1159 /* revert file attributes on failure */
1160 SetFileAttributes(pnew, attrs);
1161 }
1162 }
1163 if (tries < ARRAY_SIZE(delay) && gle == ERROR_ACCESS_DENIED) {
1164 /*
1165 * We assume that some other process had the source or
1166 * destination file open at the wrong moment and retry.
1167 * In order to give the other process a higher chance to
1168 * complete its operation, we give up our time slice now.
1169 * If we have to retry again, we do sleep a bit.
1170 */
1171 Sleep(delay[tries]);
1172 tries++;
1173 goto repeat;
1174 }
1175 errno = EACCES;
1176 return -1;
1177}
1178/*
1180 * Note that this doesn't return the actual pagesize, but
1181 * the allocation granularity. If future Windows specific git code
1182 * needs the real getpagesize function, we need to find another solution.
1183 */
1184int mingw_getpagesize(void)
1185{
1186 SYSTEM_INFO si;
1187 GetSystemInfo(&si);
1188 return si.dwAllocationGranularity;
1189}
1190struct passwd *getpwuid(int uid)
1192{
1193 static char user_name[100];
1194 static struct passwd p;
1195 DWORD len = sizeof(user_name);
1197 if (!GetUserName(user_name, &len))
1198 return NULL;
1199 p.pw_name = user_name;
1200 p.pw_gecos = "unknown";
1201 p.pw_dir = NULL;
1202 return &p;
1203}
1204static HANDLE timer_event;
1206static HANDLE timer_thread;
1207static int timer_interval;
1208static int one_shot;
1209static sig_handler_t timer_fn = SIG_DFL;
1210/* The timer works like this:
1212 * The thread, ticktack(), is a trivial routine that most of the time
1213 * only waits to receive the signal to terminate. The main thread tells
1214 * the thread to terminate by setting the timer_event to the signalled
1215 * state.
1216 * But ticktack() interrupts the wait state after the timer's interval
1217 * length to call the signal handler.
1218 */
1219static unsigned __stdcall ticktack(void *dummy)
1221{
1222 while (WaitForSingleObject(timer_event, timer_interval) == WAIT_TIMEOUT) {
1223 if (timer_fn == SIG_DFL)
1224 die("Alarm");
1225 if (timer_fn != SIG_IGN)
1226 timer_fn(SIGALRM);
1227 if (one_shot)
1228 break;
1229 }
1230 return 0;
1231}
1232static int start_timer_thread(void)
1234{
1235 timer_event = CreateEvent(NULL, FALSE, FALSE, NULL);
1236 if (timer_event) {
1237 timer_thread = (HANDLE) _beginthreadex(NULL, 0, ticktack, NULL, 0, NULL);
1238 if (!timer_thread )
1239 return errno = ENOMEM,
1240 error("cannot start timer thread");
1241 } else
1242 return errno = ENOMEM,
1243 error("cannot allocate resources for timer");
1244 return 0;
1245}
1246static void stop_timer_thread(void)
1248{
1249 if (timer_event)
1250 SetEvent(timer_event); /* tell thread to terminate */
1251 if (timer_thread) {
1252 int rc = WaitForSingleObject(timer_thread, 1000);
1253 if (rc == WAIT_TIMEOUT)
1254 error("timer thread did not terminate timely");
1255 else if (rc != WAIT_OBJECT_0)
1256 error("waiting for timer thread failed: %lu",
1257 GetLastError());
1258 CloseHandle(timer_thread);
1259 }
1260 if (timer_event)
1261 CloseHandle(timer_event);
1262 timer_event = NULL;
1263 timer_thread = NULL;
1264}
1265static inline int is_timeval_eq(const struct timeval *i1, const struct timeval *i2)
1267{
1268 return i1->tv_sec == i2->tv_sec && i1->tv_usec == i2->tv_usec;
1269}
1270int setitimer(int type, struct itimerval *in, struct itimerval *out)
1272{
1273 static const struct timeval zero;
1274 static int atexit_done;
1275 if (out != NULL)
1277 return errno = EINVAL,
1278 error("setitimer param 3 != NULL not implemented");
1279 if (!is_timeval_eq(&in->it_interval, &zero) &&
1280 !is_timeval_eq(&in->it_interval, &in->it_value))
1281 return errno = EINVAL,
1282 error("setitimer: it_interval must be zero or eq it_value");
1283 if (timer_thread)
1285 stop_timer_thread();
1286 if (is_timeval_eq(&in->it_value, &zero) &&
1288 is_timeval_eq(&in->it_interval, &zero))
1289 return 0;
1290 timer_interval = in->it_value.tv_sec * 1000 + in->it_value.tv_usec / 1000;
1292 one_shot = is_timeval_eq(&in->it_interval, &zero);
1293 if (!atexit_done) {
1294 atexit(stop_timer_thread);
1295 atexit_done = 1;
1296 }
1297 return start_timer_thread();
1298}
1299int sigaction(int sig, struct sigaction *in, struct sigaction *out)
1301{
1302 if (sig != SIGALRM)
1303 return errno = EINVAL,
1304 error("sigaction only implemented for SIGALRM");
1305 if (out != NULL)
1306 return errno = EINVAL,
1307 error("sigaction: param 3 != NULL not implemented");
1308 timer_fn = in->sa_handler;
1310 return 0;
1311}
1312#undef signal
1314sig_handler_t mingw_signal(int sig, sig_handler_t handler)
1315{
1316 sig_handler_t old = timer_fn;
1317 if (sig != SIGALRM)
1318 return signal(sig, handler);
1319 timer_fn = handler;
1320 return old;
1321}
1322static const char *make_backslash_path(const char *path)
1324{
1325 static char buf[PATH_MAX + 1];
1326 char *c;
1327 if (strlcpy(buf, path, PATH_MAX) >= PATH_MAX)
1329 die("Too long path: %.*s", 60, path);
1330 for (c = buf; *c; c++) {
1332 if (*c == '/')
1333 *c = '\\';
1334 }
1335 return buf;
1336}
1337void mingw_open_html(const char *unixpath)
1339{
1340 const char *htmlpath = make_backslash_path(unixpath);
1341 printf("Launching default browser to display HTML ...\n");
1342 ShellExecute(NULL, "open", htmlpath, NULL, "\\", 0);
1343}
1344int link(const char *oldpath, const char *newpath)
1346{
1347 typedef BOOL (WINAPI *T)(const char*, const char*, LPSECURITY_ATTRIBUTES);
1348 static T create_hard_link = NULL;
1349 if (!create_hard_link) {
1350 create_hard_link = (T) GetProcAddress(
1351 GetModuleHandle("kernel32.dll"), "CreateHardLinkA");
1352 if (!create_hard_link)
1353 create_hard_link = (T)-1;
1354 }
1355 if (create_hard_link == (T)-1) {
1356 errno = ENOSYS;
1357 return -1;
1358 }
1359 if (!create_hard_link(newpath, oldpath, NULL)) {
1360 errno = err_win_to_posix(GetLastError());
1361 return -1;
1362 }
1363 return 0;
1364}
1365char *getpass(const char *prompt)
1367{
1368 struct strbuf buf = STRBUF_INIT;
1369 fputs(prompt, stderr);
1371 for (;;) {
1372 char c = _getch();
1373 if (c == '\r' || c == '\n')
1374 break;
1375 strbuf_addch(&buf, c);
1376 }
1377 fputs("\n", stderr);
1378 return strbuf_detach(&buf, NULL);
1379}
1380#ifndef NO_MINGW_REPLACE_READDIR
1382/* MinGW readdir implementation to avoid extra lstats for Git */
1383struct mingw_DIR
1384{
1385 struct _finddata_t dd_dta; /* disk transfer area for this dir */
1386 struct mingw_dirent dd_dir; /* Our own implementation, including d_type */
1387 long dd_handle; /* _findnext handle */
1388 int dd_stat; /* 0 = next entry to read is first entry, -1 = off the end, positive = 0 based index of next entry */
1389 char dd_name[1]; /* given path for dir with search pattern (struct is extended) */
1390};
1391struct dirent *mingw_readdir(DIR *dir)
1393{
1394 WIN32_FIND_DATAA buf;
1395 HANDLE handle;
1396 struct mingw_DIR *mdir = (struct mingw_DIR*)dir;
1397 if (!dir->dd_handle) {
1399 errno = EBADF; /* No set_errno for mingw */
1400 return NULL;
1401 }
1402 if (dir->dd_handle == (long)INVALID_HANDLE_VALUE && dir->dd_stat == 0)
1404 {
1405 DWORD lasterr;
1406 handle = FindFirstFileA(dir->dd_name, &buf);
1407 lasterr = GetLastError();
1408 dir->dd_handle = (long)handle;
1409 if (handle == INVALID_HANDLE_VALUE && (lasterr != ERROR_NO_MORE_FILES)) {
1410 errno = err_win_to_posix(lasterr);
1411 return NULL;
1412 }
1413 } else if (dir->dd_handle == (long)INVALID_HANDLE_VALUE) {
1414 return NULL;
1415 } else if (!FindNextFileA((HANDLE)dir->dd_handle, &buf)) {
1416 DWORD lasterr = GetLastError();
1417 FindClose((HANDLE)dir->dd_handle);
1418 dir->dd_handle = (long)INVALID_HANDLE_VALUE;
1419 /* POSIX says you shouldn't set errno when readdir can't
1420 find any more files; so, if another error we leave it set. */
1421 if (lasterr != ERROR_NO_MORE_FILES)
1422 errno = err_win_to_posix(lasterr);
1423 return NULL;
1424 }
1425 /* We get here if `buf' contains valid data. */
1427 strcpy(dir->dd_dir.d_name, buf.cFileName);
1428 ++dir->dd_stat;
1429 /* Set file type, based on WIN32_FIND_DATA */
1431 mdir->dd_dir.d_type = 0;
1432 if (buf.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
1433 mdir->dd_dir.d_type |= DT_DIR;
1434 else
1435 mdir->dd_dir.d_type |= DT_REG;
1436 return (struct dirent*)&dir->dd_dir;
1438}
1439#endif // !NO_MINGW_REPLACE_READDIR