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Win32: let mingw_execve() return an int
[thirdparty/git.git] / compat / mingw.c
CommitLineData
f4626df5 1#include "../git-compat-util.h"
444dc903 2#include "win32.h"
28a559c0 3#include <conio.h>
7e5d7768 4#include "../strbuf.h"
c9b78400 5#include "../run-command.h"
f4626df5 6
19e12549
HV
7static const int delay[] = { 0, 1, 10, 20, 40 };
8
44626dc7 9int err_win_to_posix(DWORD winerr)
b3debd2b
PK
10{
11 int error = ENOSYS;
12 switch(winerr) {
13 case ERROR_ACCESS_DENIED: error = EACCES; break;
14 case ERROR_ACCOUNT_DISABLED: error = EACCES; break;
15 case ERROR_ACCOUNT_RESTRICTION: error = EACCES; break;
16 case ERROR_ALREADY_ASSIGNED: error = EBUSY; break;
17 case ERROR_ALREADY_EXISTS: error = EEXIST; break;
18 case ERROR_ARITHMETIC_OVERFLOW: error = ERANGE; break;
19 case ERROR_BAD_COMMAND: error = EIO; break;
20 case ERROR_BAD_DEVICE: error = ENODEV; break;
21 case ERROR_BAD_DRIVER_LEVEL: error = ENXIO; break;
22 case ERROR_BAD_EXE_FORMAT: error = ENOEXEC; break;
23 case ERROR_BAD_FORMAT: error = ENOEXEC; break;
24 case ERROR_BAD_LENGTH: error = EINVAL; break;
25 case ERROR_BAD_PATHNAME: error = ENOENT; break;
26 case ERROR_BAD_PIPE: error = EPIPE; break;
27 case ERROR_BAD_UNIT: error = ENODEV; break;
28 case ERROR_BAD_USERNAME: error = EINVAL; break;
29 case ERROR_BROKEN_PIPE: error = EPIPE; break;
30 case ERROR_BUFFER_OVERFLOW: error = ENAMETOOLONG; break;
31 case ERROR_BUSY: error = EBUSY; break;
32 case ERROR_BUSY_DRIVE: error = EBUSY; break;
33 case ERROR_CALL_NOT_IMPLEMENTED: error = ENOSYS; break;
34 case ERROR_CANNOT_MAKE: error = EACCES; break;
35 case ERROR_CANTOPEN: error = EIO; break;
36 case ERROR_CANTREAD: error = EIO; break;
37 case ERROR_CANTWRITE: error = EIO; break;
38 case ERROR_CRC: error = EIO; break;
39 case ERROR_CURRENT_DIRECTORY: error = EACCES; break;
40 case ERROR_DEVICE_IN_USE: error = EBUSY; break;
41 case ERROR_DEV_NOT_EXIST: error = ENODEV; break;
42 case ERROR_DIRECTORY: error = EINVAL; break;
43 case ERROR_DIR_NOT_EMPTY: error = ENOTEMPTY; break;
44 case ERROR_DISK_CHANGE: error = EIO; break;
45 case ERROR_DISK_FULL: error = ENOSPC; break;
46 case ERROR_DRIVE_LOCKED: error = EBUSY; break;
47 case ERROR_ENVVAR_NOT_FOUND: error = EINVAL; break;
48 case ERROR_EXE_MARKED_INVALID: error = ENOEXEC; break;
49 case ERROR_FILENAME_EXCED_RANGE: error = ENAMETOOLONG; break;
50 case ERROR_FILE_EXISTS: error = EEXIST; break;
51 case ERROR_FILE_INVALID: error = ENODEV; break;
52 case ERROR_FILE_NOT_FOUND: error = ENOENT; break;
53 case ERROR_GEN_FAILURE: error = EIO; break;
54 case ERROR_HANDLE_DISK_FULL: error = ENOSPC; break;
55 case ERROR_INSUFFICIENT_BUFFER: error = ENOMEM; break;
56 case ERROR_INVALID_ACCESS: error = EACCES; break;
57 case ERROR_INVALID_ADDRESS: error = EFAULT; break;
58 case ERROR_INVALID_BLOCK: error = EFAULT; break;
59 case ERROR_INVALID_DATA: error = EINVAL; break;
60 case ERROR_INVALID_DRIVE: error = ENODEV; break;
61 case ERROR_INVALID_EXE_SIGNATURE: error = ENOEXEC; break;
62 case ERROR_INVALID_FLAGS: error = EINVAL; break;
63 case ERROR_INVALID_FUNCTION: error = ENOSYS; break;
64 case ERROR_INVALID_HANDLE: error = EBADF; break;
65 case ERROR_INVALID_LOGON_HOURS: error = EACCES; break;
66 case ERROR_INVALID_NAME: error = EINVAL; break;
67 case ERROR_INVALID_OWNER: error = EINVAL; break;
68 case ERROR_INVALID_PARAMETER: error = EINVAL; break;
69 case ERROR_INVALID_PASSWORD: error = EPERM; break;
70 case ERROR_INVALID_PRIMARY_GROUP: error = EINVAL; break;
71 case ERROR_INVALID_SIGNAL_NUMBER: error = EINVAL; break;
72 case ERROR_INVALID_TARGET_HANDLE: error = EIO; break;
73 case ERROR_INVALID_WORKSTATION: error = EACCES; break;
74 case ERROR_IO_DEVICE: error = EIO; break;
75 case ERROR_IO_INCOMPLETE: error = EINTR; break;
76 case ERROR_LOCKED: error = EBUSY; break;
77 case ERROR_LOCK_VIOLATION: error = EACCES; break;
78 case ERROR_LOGON_FAILURE: error = EACCES; break;
79 case ERROR_MAPPED_ALIGNMENT: error = EINVAL; break;
80 case ERROR_META_EXPANSION_TOO_LONG: error = E2BIG; break;
81 case ERROR_MORE_DATA: error = EPIPE; break;
82 case ERROR_NEGATIVE_SEEK: error = ESPIPE; break;
83 case ERROR_NOACCESS: error = EFAULT; break;
84 case ERROR_NONE_MAPPED: error = EINVAL; break;
85 case ERROR_NOT_ENOUGH_MEMORY: error = ENOMEM; break;
86 case ERROR_NOT_READY: error = EAGAIN; break;
87 case ERROR_NOT_SAME_DEVICE: error = EXDEV; break;
88 case ERROR_NO_DATA: error = EPIPE; break;
89 case ERROR_NO_MORE_SEARCH_HANDLES: error = EIO; break;
90 case ERROR_NO_PROC_SLOTS: error = EAGAIN; break;
91 case ERROR_NO_SUCH_PRIVILEGE: error = EACCES; break;
92 case ERROR_OPEN_FAILED: error = EIO; break;
93 case ERROR_OPEN_FILES: error = EBUSY; break;
94 case ERROR_OPERATION_ABORTED: error = EINTR; break;
95 case ERROR_OUTOFMEMORY: error = ENOMEM; break;
96 case ERROR_PASSWORD_EXPIRED: error = EACCES; break;
97 case ERROR_PATH_BUSY: error = EBUSY; break;
98 case ERROR_PATH_NOT_FOUND: error = ENOENT; break;
99 case ERROR_PIPE_BUSY: error = EBUSY; break;
100 case ERROR_PIPE_CONNECTED: error = EPIPE; break;
101 case ERROR_PIPE_LISTENING: error = EPIPE; break;
102 case ERROR_PIPE_NOT_CONNECTED: error = EPIPE; break;
103 case ERROR_PRIVILEGE_NOT_HELD: error = EACCES; break;
104 case ERROR_READ_FAULT: error = EIO; break;
105 case ERROR_SEEK: error = EIO; break;
106 case ERROR_SEEK_ON_DEVICE: error = ESPIPE; break;
107 case ERROR_SHARING_BUFFER_EXCEEDED: error = ENFILE; break;
108 case ERROR_SHARING_VIOLATION: error = EACCES; break;
109 case ERROR_STACK_OVERFLOW: error = ENOMEM; break;
110 case ERROR_SWAPERROR: error = ENOENT; break;
111 case ERROR_TOO_MANY_MODULES: error = EMFILE; break;
112 case ERROR_TOO_MANY_OPEN_FILES: error = EMFILE; break;
113 case ERROR_UNRECOGNIZED_MEDIA: error = ENXIO; break;
114 case ERROR_UNRECOGNIZED_VOLUME: error = ENODEV; break;
115 case ERROR_WAIT_NO_CHILDREN: error = ECHILD; break;
116 case ERROR_WRITE_FAULT: error = EIO; break;
117 case ERROR_WRITE_PROTECT: error = EROFS; break;
118 }
119 return error;
120}
121
19e12549
HV
122static inline int is_file_in_use_error(DWORD errcode)
123{
124 switch (errcode) {
125 case ERROR_SHARING_VIOLATION:
126 case ERROR_ACCESS_DENIED:
127 return 1;
128 }
129
130 return 0;
131}
132
c9b78400
HV
133static int read_yes_no_answer(void)
134{
135 char answer[1024];
136
137 if (fgets(answer, sizeof(answer), stdin)) {
138 size_t answer_len = strlen(answer);
139 int got_full_line = 0, c;
140
141 /* remove the newline */
142 if (answer_len >= 2 && answer[answer_len-2] == '\r') {
143 answer[answer_len-2] = '\0';
144 got_full_line = 1;
145 } else if (answer_len >= 1 && answer[answer_len-1] == '\n') {
146 answer[answer_len-1] = '\0';
147 got_full_line = 1;
148 }
149 /* flush the buffer in case we did not get the full line */
150 if (!got_full_line)
151 while ((c = getchar()) != EOF && c != '\n')
152 ;
153 } else
154 /* we could not read, return the
155 * default answer which is no */
156 return 0;
157
158 if (tolower(answer[0]) == 'y' && !answer[1])
159 return 1;
160 if (!strncasecmp(answer, "yes", sizeof(answer)))
161 return 1;
162 if (tolower(answer[0]) == 'n' && !answer[1])
163 return 0;
164 if (!strncasecmp(answer, "no", sizeof(answer)))
165 return 0;
166
167 /* did not find an answer we understand */
168 return -1;
169}
170
171static int ask_yes_no_if_possible(const char *format, ...)
172{
173 char question[4096];
174 const char *retry_hook[] = { NULL, NULL, NULL };
175 va_list args;
176
177 va_start(args, format);
178 vsnprintf(question, sizeof(question), format, args);
179 va_end(args);
180
06bc4b79 181 if ((retry_hook[0] = mingw_getenv("GIT_ASK_YESNO"))) {
c9b78400
HV
182 retry_hook[1] = question;
183 return !run_command_v_opt(retry_hook, 0);
184 }
185
186 if (!isatty(_fileno(stdin)) || !isatty(_fileno(stderr)))
187 return 0;
188
189 while (1) {
190 int answer;
191 fprintf(stderr, "%s (y/n) ", question);
192
193 if ((answer = read_yes_no_answer()) >= 0)
194 return answer;
195
196 fprintf(stderr, "Sorry, I did not understand your answer. "
197 "Please type 'y' or 'n'\n");
198 }
199}
200
337967fb
HV
201#undef unlink
202int mingw_unlink(const char *pathname)
203{
19e12549
HV
204 int ret, tries = 0;
205
337967fb
HV
206 /* read-only files cannot be removed */
207 chmod(pathname, 0666);
19e12549
HV
208 while ((ret = unlink(pathname)) == -1 && tries < ARRAY_SIZE(delay)) {
209 if (!is_file_in_use_error(GetLastError()))
210 break;
211 /*
212 * We assume that some other process had the source or
213 * destination file open at the wrong moment and retry.
214 * In order to give the other process a higher chance to
215 * complete its operation, we give up our time slice now.
216 * If we have to retry again, we do sleep a bit.
217 */
218 Sleep(delay[tries]);
219 tries++;
220 }
c9b78400
HV
221 while (ret == -1 && is_file_in_use_error(GetLastError()) &&
222 ask_yes_no_if_possible("Unlink of file '%s' failed. "
223 "Should I try again?", pathname))
224 ret = unlink(pathname);
19e12549 225 return ret;
337967fb
HV
226}
227
ab1a11be
JS
228static int is_dir_empty(const char *path)
229{
230 struct strbuf buf = STRBUF_INIT;
231 WIN32_FIND_DATAA findbuf;
232 HANDLE handle;
233
234 strbuf_addf(&buf, "%s\\*", path);
235 handle = FindFirstFileA(buf.buf, &findbuf);
236 if (handle == INVALID_HANDLE_VALUE) {
237 strbuf_release(&buf);
238 return GetLastError() == ERROR_NO_MORE_FILES;
239 }
240
241 while (!strcmp(findbuf.cFileName, ".") ||
242 !strcmp(findbuf.cFileName, ".."))
243 if (!FindNextFile(handle, &findbuf)) {
244 strbuf_release(&buf);
245 return GetLastError() == ERROR_NO_MORE_FILES;
246 }
247 FindClose(handle);
248 strbuf_release(&buf);
249 return 0;
250}
251
4f288100
HV
252#undef rmdir
253int mingw_rmdir(const char *pathname)
254{
255 int ret, tries = 0;
256
257 while ((ret = rmdir(pathname)) == -1 && tries < ARRAY_SIZE(delay)) {
258 if (!is_file_in_use_error(GetLastError()))
a83b2b57
EFL
259 errno = err_win_to_posix(GetLastError());
260 if (errno != EACCES)
4f288100 261 break;
ab1a11be
JS
262 if (!is_dir_empty(pathname)) {
263 errno = ENOTEMPTY;
264 break;
265 }
4f288100
HV
266 /*
267 * We assume that some other process had the source or
268 * destination file open at the wrong moment and retry.
269 * In order to give the other process a higher chance to
270 * complete its operation, we give up our time slice now.
271 * If we have to retry again, we do sleep a bit.
272 */
273 Sleep(delay[tries]);
274 tries++;
275 }
a83b2b57 276 while (ret == -1 && errno == EACCES && is_file_in_use_error(GetLastError()) &&
4f288100
HV
277 ask_yes_no_if_possible("Deletion of directory '%s' failed. "
278 "Should I try again?", pathname))
279 ret = rmdir(pathname);
280 return ret;
281}
282
3e4a1ba0
JS
283#undef open
284int mingw_open (const char *filename, int oflags, ...)
285{
286 va_list args;
287 unsigned mode;
0d30ad71
FL
288 int fd;
289
3e4a1ba0
JS
290 va_start(args, oflags);
291 mode = va_arg(args, int);
292 va_end(args);
293
1a404209 294 if (filename && !strcmp(filename, "/dev/null"))
3e4a1ba0 295 filename = "nul";
0d30ad71
FL
296
297 fd = open(filename, oflags, mode);
298
3e4a1ba0
JS
299 if (fd < 0 && (oflags & O_CREAT) && errno == EACCES) {
300 DWORD attrs = GetFileAttributes(filename);
301 if (attrs != INVALID_FILE_ATTRIBUTES && (attrs & FILE_ATTRIBUTE_DIRECTORY))
302 errno = EISDIR;
303 }
304 return fd;
305}
306
176478a8
EFL
307static BOOL WINAPI ctrl_ignore(DWORD type)
308{
309 return TRUE;
310}
311
312#undef fgetc
313int mingw_fgetc(FILE *stream)
314{
315 int ch;
316 if (!isatty(_fileno(stream)))
317 return fgetc(stream);
318
319 SetConsoleCtrlHandler(ctrl_ignore, TRUE);
320 while (1) {
321 ch = fgetc(stream);
322 if (ch != EOF || GetLastError() != ERROR_OPERATION_ABORTED)
323 break;
324
325 /* Ctrl+C was pressed, simulate SIGINT and retry */
326 mingw_raise(SIGINT);
327 }
328 SetConsoleCtrlHandler(ctrl_ignore, FALSE);
329 return ch;
330}
331
3fdcdbdf
JS
332#undef fopen
333FILE *mingw_fopen (const char *filename, const char *otype)
334{
1a404209 335 if (filename && !strcmp(filename, "/dev/null"))
3fdcdbdf
JS
336 filename = "nul";
337 return fopen(filename, otype);
338}
339
340#undef freopen
341FILE *mingw_freopen (const char *filename, const char *otype, FILE *stream)
342{
343 if (filename && !strcmp(filename, "/dev/null"))
344 filename = "nul";
345 return freopen(filename, otype, stream);
346}
347
84adb641
JS
348#undef fflush
349int mingw_fflush(FILE *stream)
350{
351 int ret = fflush(stream);
352
353 /*
354 * write() is used behind the scenes of stdio output functions.
355 * Since git code does not check for errors after each stdio write
356 * operation, it can happen that write() is called by a later
357 * stdio function even if an earlier write() call failed. In the
358 * case of a pipe whose readable end was closed, only the first
359 * call to write() reports EPIPE on Windows. Subsequent write()
360 * calls report EINVAL. It is impossible to notice whether this
361 * fflush invocation triggered such a case, therefore, we have to
362 * catch all EINVAL errors whole-sale.
363 */
364 if (ret && errno == EINVAL)
365 errno = EPIPE;
366
367 return ret;
368}
369
a6d15bc3
JS
370/*
371 * The unit of FILETIME is 100-nanoseconds since January 1, 1601, UTC.
372 * Returns the 100-nanoseconds ("hekto nanoseconds") since the epoch.
373 */
374static inline long long filetime_to_hnsec(const FILETIME *ft)
5411bdc4
MSO
375{
376 long long winTime = ((long long)ft->dwHighDateTime << 32) + ft->dwLowDateTime;
a6d15bc3
JS
377 /* Windows to Unix Epoch conversion */
378 return winTime - 116444736000000000LL;
379}
380
381static inline time_t filetime_to_time_t(const FILETIME *ft)
382{
383 return (time_t)(filetime_to_hnsec(ft) / 10000000);
5411bdc4
MSO
384}
385
5411bdc4
MSO
386/* We keep the do_lstat code in a separate function to avoid recursion.
387 * When a path ends with a slash, the stat will fail with ENOENT. In
388 * this case, we strip the trailing slashes and stat again.
9b9784ca
PT
389 *
390 * If follow is true then act like stat() and report on the link
391 * target. Otherwise report on the link itself.
5411bdc4 392 */
9b9784ca 393static int do_lstat(int follow, const char *file_name, struct stat *buf)
5411bdc4 394{
e93368d2 395 int err;
5411bdc4
MSO
396 WIN32_FILE_ATTRIBUTE_DATA fdata;
397
e93368d2 398 if (!(err = get_file_attr(file_name, &fdata))) {
5411bdc4
MSO
399 buf->st_ino = 0;
400 buf->st_gid = 0;
401 buf->st_uid = 0;
180964f0 402 buf->st_nlink = 1;
444dc903 403 buf->st_mode = file_attr_to_st_mode(fdata.dwFileAttributes);
1d4e4cd4
JS
404 buf->st_size = fdata.nFileSizeLow |
405 (((off_t)fdata.nFileSizeHigh)<<32);
8252df62 406 buf->st_dev = buf->st_rdev = 0; /* not used by Git */
5411bdc4
MSO
407 buf->st_atime = filetime_to_time_t(&(fdata.ftLastAccessTime));
408 buf->st_mtime = filetime_to_time_t(&(fdata.ftLastWriteTime));
409 buf->st_ctime = filetime_to_time_t(&(fdata.ftCreationTime));
9b9784ca
PT
410 if (fdata.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) {
411 WIN32_FIND_DATAA findbuf;
412 HANDLE handle = FindFirstFileA(file_name, &findbuf);
413 if (handle != INVALID_HANDLE_VALUE) {
414 if ((findbuf.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) &&
415 (findbuf.dwReserved0 == IO_REPARSE_TAG_SYMLINK)) {
416 if (follow) {
417 char buffer[MAXIMUM_REPARSE_DATA_BUFFER_SIZE];
418 buf->st_size = readlink(file_name, buffer, MAXIMUM_REPARSE_DATA_BUFFER_SIZE);
419 } else {
420 buf->st_mode = S_IFLNK;
421 }
422 buf->st_mode |= S_IREAD;
423 if (!(findbuf.dwFileAttributes & FILE_ATTRIBUTE_READONLY))
424 buf->st_mode |= S_IWRITE;
425 }
426 FindClose(handle);
427 }
428 }
5411bdc4
MSO
429 return 0;
430 }
e93368d2 431 errno = err;
5411bdc4
MSO
432 return -1;
433}
434
435/* We provide our own lstat/fstat functions, since the provided
436 * lstat/fstat functions are so slow. These stat functions are
437 * tailored for Git's usage (read: fast), and are not meant to be
438 * complete. Note that Git stat()s are redirected to mingw_lstat()
439 * too, since Windows doesn't really handle symlinks that well.
440 */
9b9784ca 441static int do_stat_internal(int follow, const char *file_name, struct stat *buf)
5411bdc4
MSO
442{
443 int namelen;
444 static char alt_name[PATH_MAX];
445
9b9784ca 446 if (!do_lstat(follow, file_name, buf))
5411bdc4
MSO
447 return 0;
448
449 /* if file_name ended in a '/', Windows returned ENOENT;
450 * try again without trailing slashes
451 */
452 if (errno != ENOENT)
453 return -1;
454
455 namelen = strlen(file_name);
456 if (namelen && file_name[namelen-1] != '/')
457 return -1;
458 while (namelen && file_name[namelen-1] == '/')
459 --namelen;
460 if (!namelen || namelen >= PATH_MAX)
461 return -1;
462
463 memcpy(alt_name, file_name, namelen);
464 alt_name[namelen] = 0;
9b9784ca
PT
465 return do_lstat(follow, alt_name, buf);
466}
467
468int mingw_lstat(const char *file_name, struct stat *buf)
469{
470 return do_stat_internal(0, file_name, buf);
471}
472int mingw_stat(const char *file_name, struct stat *buf)
473{
474 return do_stat_internal(1, file_name, buf);
5411bdc4
MSO
475}
476
180964f0 477int mingw_fstat(int fd, struct stat *buf)
5411bdc4
MSO
478{
479 HANDLE fh = (HANDLE)_get_osfhandle(fd);
480 BY_HANDLE_FILE_INFORMATION fdata;
481
482 if (fh == INVALID_HANDLE_VALUE) {
483 errno = EBADF;
484 return -1;
485 }
486 /* direct non-file handles to MS's fstat() */
180964f0 487 if (GetFileType(fh) != FILE_TYPE_DISK)
1d4e4cd4 488 return _fstati64(fd, buf);
5411bdc4
MSO
489
490 if (GetFileInformationByHandle(fh, &fdata)) {
5411bdc4
MSO
491 buf->st_ino = 0;
492 buf->st_gid = 0;
493 buf->st_uid = 0;
180964f0 494 buf->st_nlink = 1;
444dc903 495 buf->st_mode = file_attr_to_st_mode(fdata.dwFileAttributes);
1d4e4cd4
JS
496 buf->st_size = fdata.nFileSizeLow |
497 (((off_t)fdata.nFileSizeHigh)<<32);
8252df62 498 buf->st_dev = buf->st_rdev = 0; /* not used by Git */
5411bdc4
MSO
499 buf->st_atime = filetime_to_time_t(&(fdata.ftLastAccessTime));
500 buf->st_mtime = filetime_to_time_t(&(fdata.ftLastWriteTime));
501 buf->st_ctime = filetime_to_time_t(&(fdata.ftCreationTime));
502 return 0;
503 }
504 errno = EBADF;
505 return -1;
506}
507
7c0ffa1c
JS
508static inline void time_t_to_filetime(time_t t, FILETIME *ft)
509{
510 long long winTime = t * 10000000LL + 116444736000000000LL;
511 ft->dwLowDateTime = winTime;
512 ft->dwHighDateTime = winTime >> 32;
513}
514
515int mingw_utime (const char *file_name, const struct utimbuf *times)
516{
517 FILETIME mft, aft;
518 int fh, rc;
519
520 /* must have write permission */
852f098c
JS
521 DWORD attrs = GetFileAttributes(file_name);
522 if (attrs != INVALID_FILE_ATTRIBUTES &&
523 (attrs & FILE_ATTRIBUTE_READONLY)) {
524 /* ignore errors here; open() will report them */
525 SetFileAttributes(file_name, attrs & ~FILE_ATTRIBUTE_READONLY);
526 }
527
528 if ((fh = open(file_name, O_RDWR | O_BINARY)) < 0) {
529 rc = -1;
530 goto revert_attrs;
531 }
7c0ffa1c 532
ded2d476
SG
533 if (times) {
534 time_t_to_filetime(times->modtime, &mft);
535 time_t_to_filetime(times->actime, &aft);
536 } else {
537 GetSystemTimeAsFileTime(&mft);
538 aft = mft;
539 }
7c0ffa1c
JS
540 if (!SetFileTime((HANDLE)_get_osfhandle(fh), NULL, &aft, &mft)) {
541 errno = EINVAL;
542 rc = -1;
543 } else
544 rc = 0;
545 close(fh);
852f098c
JS
546
547revert_attrs:
548 if (attrs != INVALID_FILE_ATTRIBUTES &&
549 (attrs & FILE_ATTRIBUTE_READONLY)) {
550 /* ignore errors again */
551 SetFileAttributes(file_name, attrs);
552 }
7c0ffa1c
JS
553 return rc;
554}
555
f4626df5
JS
556unsigned int sleep (unsigned int seconds)
557{
558 Sleep(seconds*1000);
559 return 0;
560}
561
562int mkstemp(char *template)
563{
564 char *filename = mktemp(template);
565 if (filename == NULL)
566 return -1;
567 return open(filename, O_RDWR | O_CREAT, 0600);
568}
569
570int gettimeofday(struct timeval *tv, void *tz)
571{
a6d15bc3
JS
572 FILETIME ft;
573 long long hnsec;
574
575 GetSystemTimeAsFileTime(&ft);
576 hnsec = filetime_to_hnsec(&ft);
577 tv->tv_sec = hnsec / 10000000;
578 tv->tv_usec = (hnsec % 10000000) / 10;
a42a0c2e 579 return 0;
f4626df5
JS
580}
581
897bb8cb
JS
582int pipe(int filedes[2])
583{
3e34d665 584 HANDLE h[2];
897bb8cb 585
3e34d665
JS
586 /* this creates non-inheritable handles */
587 if (!CreatePipe(&h[0], &h[1], NULL, 8192)) {
588 errno = err_win_to_posix(GetLastError());
897bb8cb
JS
589 return -1;
590 }
3e34d665
JS
591 filedes[0] = _open_osfhandle((int)h[0], O_NOINHERIT);
592 if (filedes[0] < 0) {
897bb8cb
JS
593 CloseHandle(h[0]);
594 CloseHandle(h[1]);
595 return -1;
596 }
3e34d665
JS
597 filedes[1] = _open_osfhandle((int)h[1], O_NOINHERIT);
598 if (filedes[0] < 0) {
897bb8cb 599 close(filedes[0]);
897bb8cb
JS
600 CloseHandle(h[1]);
601 return -1;
602 }
897bb8cb
JS
603 return 0;
604}
605
f4626df5
JS
606struct tm *gmtime_r(const time_t *timep, struct tm *result)
607{
608 /* gmtime() in MSVCRT.DLL is thread-safe, but not reentrant */
609 memcpy(result, gmtime(timep), sizeof(struct tm));
610 return result;
611}
612
613struct tm *localtime_r(const time_t *timep, struct tm *result)
614{
615 /* localtime() in MSVCRT.DLL is thread-safe, but not reentrant */
616 memcpy(result, localtime(timep), sizeof(struct tm));
617 return result;
618}
619
25fe217b
JS
620#undef getcwd
621char *mingw_getcwd(char *pointer, int len)
622{
623 int i;
624 char *ret = getcwd(pointer, len);
625 if (!ret)
626 return ret;
627 for (i = 0; pointer[i]; i++)
628 if (pointer[i] == '\\')
629 pointer[i] = '/';
630 return ret;
631}
632
7e5d7768
JS
633/*
634 * See http://msdn2.microsoft.com/en-us/library/17w5ykft(vs.71).aspx
635 * (Parsing C++ Command-Line Arguments)
636 */
637static const char *quote_arg(const char *arg)
638{
639 /* count chars to quote */
640 int len = 0, n = 0;
641 int force_quotes = 0;
642 char *q, *d;
643 const char *p = arg;
644 if (!*p) force_quotes = 1;
645 while (*p) {
3aea1a5a 646 if (isspace(*p) || *p == '*' || *p == '?' || *p == '{' || *p == '\'')
7e5d7768
JS
647 force_quotes = 1;
648 else if (*p == '"')
649 n++;
650 else if (*p == '\\') {
651 int count = 0;
652 while (*p == '\\') {
653 count++;
654 p++;
655 len++;
656 }
657 if (*p == '"')
658 n += count*2 + 1;
659 continue;
660 }
661 len++;
662 p++;
663 }
664 if (!force_quotes && n == 0)
665 return arg;
666
667 /* insert \ where necessary */
668 d = q = xmalloc(len+n+3);
669 *d++ = '"';
670 while (*arg) {
671 if (*arg == '"')
672 *d++ = '\\';
673 else if (*arg == '\\') {
674 int count = 0;
675 while (*arg == '\\') {
676 count++;
677 *d++ = *arg++;
678 }
679 if (*arg == '"') {
680 while (count-- > 0)
681 *d++ = '\\';
682 *d++ = '\\';
683 }
684 }
685 *d++ = *arg++;
686 }
687 *d++ = '"';
688 *d++ = 0;
689 return q;
690}
691
f1a4dfb8
JS
692static const char *parse_interpreter(const char *cmd)
693{
694 static char buf[100];
695 char *p, *opt;
696 int n, fd;
697
698 /* don't even try a .exe */
699 n = strlen(cmd);
700 if (n >= 4 && !strcasecmp(cmd+n-4, ".exe"))
701 return NULL;
702
703 fd = open(cmd, O_RDONLY);
704 if (fd < 0)
705 return NULL;
706 n = read(fd, buf, sizeof(buf)-1);
707 close(fd);
708 if (n < 4) /* at least '#!/x' and not error */
709 return NULL;
710
711 if (buf[0] != '#' || buf[1] != '!')
712 return NULL;
713 buf[n] = '\0';
bedc4279
PH
714 p = buf + strcspn(buf, "\r\n");
715 if (!*p)
f1a4dfb8
JS
716 return NULL;
717
718 *p = '\0';
719 if (!(p = strrchr(buf+2, '/')) && !(p = strrchr(buf+2, '\\')))
720 return NULL;
721 /* strip options */
722 if ((opt = strchr(p+1, ' ')))
723 *opt = '\0';
724 return p+1;
725}
726
727/*
728 * Splits the PATH into parts.
729 */
730static char **get_path_split(void)
731{
06bc4b79 732 char *p, **path, *envpath = mingw_getenv("PATH");
f1a4dfb8
JS
733 int i, n = 0;
734
735 if (!envpath || !*envpath)
736 return NULL;
737
738 envpath = xstrdup(envpath);
739 p = envpath;
740 while (p) {
741 char *dir = p;
742 p = strchr(p, ';');
743 if (p) *p++ = '\0';
744 if (*dir) { /* not earlier, catches series of ; */
745 ++n;
746 }
747 }
748 if (!n)
749 return NULL;
750
4b25d091 751 path = xmalloc((n+1)*sizeof(char *));
f1a4dfb8
JS
752 p = envpath;
753 i = 0;
754 do {
755 if (*p)
756 path[i++] = xstrdup(p);
757 p = p+strlen(p)+1;
758 } while (i < n);
759 path[i] = NULL;
760
761 free(envpath);
762
763 return path;
764}
765
766static void free_path_split(char **path)
767{
0d30ad71
FL
768 char **p = path;
769
f1a4dfb8
JS
770 if (!path)
771 return;
772
f1a4dfb8
JS
773 while (*p)
774 free(*p++);
775 free(path);
776}
777
778/*
779 * exe_only means that we only want to detect .exe files, but not scripts
780 * (which do not have an extension)
781 */
782static char *lookup_prog(const char *dir, const char *cmd, int isexe, int exe_only)
783{
784 char path[MAX_PATH];
785 snprintf(path, sizeof(path), "%s/%s.exe", dir, cmd);
786
787 if (!isexe && access(path, F_OK) == 0)
788 return xstrdup(path);
789 path[strlen(path)-4] = '\0';
790 if ((!exe_only || isexe) && access(path, F_OK) == 0)
fe77b695
ER
791 if (!(GetFileAttributes(path) & FILE_ATTRIBUTE_DIRECTORY))
792 return xstrdup(path);
f1a4dfb8
JS
793 return NULL;
794}
795
796/*
22e5e58a 797 * Determines the absolute path of cmd using the split path in path.
f1a4dfb8
JS
798 * If cmd contains a slash or backslash, no lookup is performed.
799 */
800static char *path_lookup(const char *cmd, char **path, int exe_only)
801{
802 char *prog = NULL;
803 int len = strlen(cmd);
804 int isexe = len >= 4 && !strcasecmp(cmd+len-4, ".exe");
805
806 if (strchr(cmd, '/') || strchr(cmd, '\\'))
807 prog = xstrdup(cmd);
808
809 while (!prog && *path)
810 prog = lookup_prog(*path++, cmd, isexe, exe_only);
811
812 return prog;
813}
814
7e5d7768
JS
815static int env_compare(const void *a, const void *b)
816{
817 char *const *ea = a;
818 char *const *eb = b;
819 return strcasecmp(*ea, *eb);
820}
821
52de4db5
EFL
822struct pinfo_t {
823 struct pinfo_t *next;
824 pid_t pid;
825 HANDLE proc;
657b35f4
RJ
826};
827static struct pinfo_t *pinfo = NULL;
52de4db5
EFL
828CRITICAL_SECTION pinfo_cs;
829
75301f90 830static pid_t mingw_spawnve_fd(const char *cmd, const char **argv, char **env,
f9a2743c 831 const char *dir,
75301f90 832 int prepend_cmd, int fhin, int fhout, int fherr)
7e5d7768
JS
833{
834 STARTUPINFO si;
835 PROCESS_INFORMATION pi;
836 struct strbuf envblk, args;
837 unsigned flags;
838 BOOL ret;
839
840 /* Determine whether or not we are associated to a console */
841 HANDLE cons = CreateFile("CONOUT$", GENERIC_WRITE,
842 FILE_SHARE_WRITE, NULL, OPEN_EXISTING,
843 FILE_ATTRIBUTE_NORMAL, NULL);
844 if (cons == INVALID_HANDLE_VALUE) {
845 /* There is no console associated with this process.
846 * Since the child is a console process, Windows
847 * would normally create a console window. But
848 * since we'll be redirecting std streams, we do
849 * not need the console.
19fb896f
AG
850 * It is necessary to use DETACHED_PROCESS
851 * instead of CREATE_NO_WINDOW to make ssh
852 * recognize that it has no console.
7e5d7768 853 */
19fb896f 854 flags = DETACHED_PROCESS;
7e5d7768
JS
855 } else {
856 /* There is already a console. If we specified
19fb896f 857 * DETACHED_PROCESS here, too, Windows would
7e5d7768 858 * disassociate the child from the console.
19fb896f 859 * The same is true for CREATE_NO_WINDOW.
7e5d7768
JS
860 * Go figure!
861 */
862 flags = 0;
863 CloseHandle(cons);
864 }
865 memset(&si, 0, sizeof(si));
866 si.cb = sizeof(si);
867 si.dwFlags = STARTF_USESTDHANDLES;
eac14f89
KB
868 si.hStdInput = winansi_get_osfhandle(fhin);
869 si.hStdOutput = winansi_get_osfhandle(fhout);
870 si.hStdError = winansi_get_osfhandle(fherr);
7e5d7768
JS
871
872 /* concatenate argv, quoting args as we go */
873 strbuf_init(&args, 0);
874 if (prepend_cmd) {
875 char *quoted = (char *)quote_arg(cmd);
876 strbuf_addstr(&args, quoted);
877 if (quoted != cmd)
878 free(quoted);
879 }
880 for (; *argv; argv++) {
881 char *quoted = (char *)quote_arg(*argv);
882 if (*args.buf)
883 strbuf_addch(&args, ' ');
884 strbuf_addstr(&args, quoted);
885 if (quoted != *argv)
886 free(quoted);
887 }
888
889 if (env) {
890 int count = 0;
891 char **e, **sorted_env;
892
893 for (e = env; *e; e++)
894 count++;
895
896 /* environment must be sorted */
897 sorted_env = xmalloc(sizeof(*sorted_env) * (count + 1));
898 memcpy(sorted_env, env, sizeof(*sorted_env) * (count + 1));
899 qsort(sorted_env, count, sizeof(*sorted_env), env_compare);
900
901 strbuf_init(&envblk, 0);
902 for (e = sorted_env; *e; e++) {
903 strbuf_addstr(&envblk, *e);
904 strbuf_addch(&envblk, '\0');
905 }
906 free(sorted_env);
907 }
908
909 memset(&pi, 0, sizeof(pi));
910 ret = CreateProcess(cmd, args.buf, NULL, NULL, TRUE, flags,
f9a2743c 911 env ? envblk.buf : NULL, dir, &si, &pi);
7e5d7768
JS
912
913 if (env)
914 strbuf_release(&envblk);
915 strbuf_release(&args);
916
917 if (!ret) {
918 errno = ENOENT;
919 return -1;
920 }
921 CloseHandle(pi.hThread);
52de4db5
EFL
922
923 /*
924 * The process ID is the human-readable identifier of the process
925 * that we want to present in log and error messages. The handle
926 * is not useful for this purpose. But we cannot close it, either,
927 * because it is not possible to turn a process ID into a process
928 * handle after the process terminated.
929 * Keep the handle in a list for waitpid.
930 */
931 EnterCriticalSection(&pinfo_cs);
932 {
933 struct pinfo_t *info = xmalloc(sizeof(struct pinfo_t));
934 info->pid = pi.dwProcessId;
935 info->proc = pi.hProcess;
936 info->next = pinfo;
937 pinfo = info;
938 }
939 LeaveCriticalSection(&pinfo_cs);
940
941 return (pid_t)pi.dwProcessId;
7e5d7768
JS
942}
943
75301f90
JS
944static pid_t mingw_spawnve(const char *cmd, const char **argv, char **env,
945 int prepend_cmd)
946{
f9a2743c 947 return mingw_spawnve_fd(cmd, argv, env, NULL, prepend_cmd, 0, 1, 2);
75301f90
JS
948}
949
950pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **env,
f9a2743c 951 const char *dir,
75301f90 952 int fhin, int fhout, int fherr)
7e5d7768
JS
953{
954 pid_t pid;
955 char **path = get_path_split();
956 char *prog = path_lookup(cmd, path, 0);
957
958 if (!prog) {
959 errno = ENOENT;
960 pid = -1;
961 }
962 else {
963 const char *interpr = parse_interpreter(prog);
964
965 if (interpr) {
966 const char *argv0 = argv[0];
967 char *iprog = path_lookup(interpr, path, 1);
968 argv[0] = prog;
969 if (!iprog) {
970 errno = ENOENT;
971 pid = -1;
972 }
973 else {
f9a2743c 974 pid = mingw_spawnve_fd(iprog, argv, env, dir, 1,
75301f90 975 fhin, fhout, fherr);
7e5d7768
JS
976 free(iprog);
977 }
978 argv[0] = argv0;
979 }
980 else
f9a2743c 981 pid = mingw_spawnve_fd(prog, argv, env, dir, 0,
75301f90 982 fhin, fhout, fherr);
7e5d7768
JS
983 free(prog);
984 }
985 free_path_split(path);
986 return pid;
987}
988
f1a4dfb8
JS
989static int try_shell_exec(const char *cmd, char *const *argv, char **env)
990{
991 const char *interpr = parse_interpreter(cmd);
992 char **path;
993 char *prog;
994 int pid = 0;
995
996 if (!interpr)
997 return 0;
998 path = get_path_split();
999 prog = path_lookup(interpr, path, 1);
1000 if (prog) {
1001 int argc = 0;
1002 const char **argv2;
1003 while (argv[argc]) argc++;
7e5d7768
JS
1004 argv2 = xmalloc(sizeof(*argv) * (argc+1));
1005 argv2[0] = (char *)cmd; /* full path to the script file */
1006 memcpy(&argv2[1], &argv[1], sizeof(*argv) * argc);
1007 pid = mingw_spawnve(prog, argv2, env, 1);
f1a4dfb8
JS
1008 if (pid >= 0) {
1009 int status;
1010 if (waitpid(pid, &status, 0) < 0)
1011 status = 255;
1012 exit(status);
1013 }
1014 pid = 1; /* indicate that we tried but failed */
1015 free(prog);
1016 free(argv2);
1017 }
1018 free_path_split(path);
1019 return pid;
1020}
1021
570f1e6e 1022static int mingw_execve(const char *cmd, char *const *argv, char *const *env)
f1a4dfb8
JS
1023{
1024 /* check if git_command is a shell script */
1025 if (!try_shell_exec(cmd, argv, (char **)env)) {
1026 int pid, status;
1027
7e5d7768 1028 pid = mingw_spawnve(cmd, (const char **)argv, (char **)env, 0);
f1a4dfb8 1029 if (pid < 0)
570f1e6e 1030 return -1;
f1a4dfb8
JS
1031 if (waitpid(pid, &status, 0) < 0)
1032 status = 255;
1033 exit(status);
1034 }
570f1e6e 1035 return -1;
f1a4dfb8
JS
1036}
1037
1696d723 1038int mingw_execvp(const char *cmd, char *const *argv)
f1a4dfb8
JS
1039{
1040 char **path = get_path_split();
1041 char *prog = path_lookup(cmd, path, 0);
1042
1043 if (prog) {
1044 mingw_execve(prog, argv, environ);
1045 free(prog);
1046 } else
1047 errno = ENOENT;
1048
1049 free_path_split(path);
1696d723 1050 return -1;
f1a4dfb8
JS
1051}
1052
1696d723 1053int mingw_execv(const char *cmd, char *const *argv)
5debf9a5
ES
1054{
1055 mingw_execve(cmd, argv, environ);
1696d723 1056 return -1;
5debf9a5
ES
1057}
1058
82fc07b7
EFL
1059int mingw_kill(pid_t pid, int sig)
1060{
1061 if (pid > 0 && sig == SIGTERM) {
1062 HANDLE h = OpenProcess(PROCESS_TERMINATE, FALSE, pid);
1063
1064 if (TerminateProcess(h, -1)) {
1065 CloseHandle(h);
1066 return 0;
1067 }
1068
1069 errno = err_win_to_posix(GetLastError());
1070 CloseHandle(h);
1071 return -1;
64a99eb4
NTND
1072 } else if (pid > 0 && sig == 0) {
1073 HANDLE h = OpenProcess(PROCESS_QUERY_INFORMATION, FALSE, pid);
1074 if (h) {
1075 CloseHandle(h);
1076 return 0;
1077 }
82fc07b7
EFL
1078 }
1079
1080 errno = EINVAL;
1081 return -1;
1082}
1083
2affea41 1084static char **copy_environ(void)
ba26f296
JS
1085{
1086 char **env;
1087 int i = 0;
1088 while (environ[i])
1089 i++;
1090 env = xmalloc((i+1)*sizeof(*env));
1091 for (i = 0; environ[i]; i++)
1092 env[i] = xstrdup(environ[i]);
1093 env[i] = NULL;
1094 return env;
1095}
1096
1097void free_environ(char **env)
1098{
1099 int i;
1100 for (i = 0; env[i]; i++)
1101 free(env[i]);
1102 free(env);
1103}
1104
1105static int lookup_env(char **env, const char *name, size_t nmln)
1106{
1107 int i;
1108
1109 for (i = 0; env[i]; i++) {
1110 if (0 == strncmp(env[i], name, nmln)
1111 && '=' == env[i][nmln])
1112 /* matches */
1113 return i;
1114 }
1115 return -1;
1116}
1117
1118/*
1119 * If name contains '=', then sets the variable, otherwise it unsets it
1120 */
2affea41 1121static char **env_setenv(char **env, const char *name)
ba26f296
JS
1122{
1123 char *eq = strchrnul(name, '=');
1124 int i = lookup_env(env, name, eq-name);
1125
1126 if (i < 0) {
1127 if (*eq) {
1128 for (i = 0; env[i]; i++)
1129 ;
1130 env = xrealloc(env, (i+2)*sizeof(*env));
1131 env[i] = xstrdup(name);
1132 env[i+1] = NULL;
1133 }
1134 }
1135 else {
1136 free(env[i]);
1137 if (*eq)
1138 env[i] = xstrdup(name);
1139 else
1140 for (; env[i]; i++)
1141 env[i] = env[i+1];
1142 }
1143 return env;
1144}
1145
2affea41
JS
1146/*
1147 * Copies global environ and adjusts variables as specified by vars.
1148 */
1149char **make_augmented_environ(const char *const *vars)
1150{
1151 char **env = copy_environ();
1152
1153 while (*vars)
1154 env = env_setenv(env, *vars++);
1155 return env;
1156}
1157
06bc4b79 1158#undef getenv
df599e96
JS
1159
1160/*
1161 * The system's getenv looks up the name in a case-insensitive manner.
1162 * This version tries a case-sensitive lookup and falls back to
1163 * case-insensitive if nothing was found. This is necessary because,
1164 * as a prominent example, CMD sets 'Path', but not 'PATH'.
1165 * Warning: not thread-safe.
1166 */
1167static char *getenv_cs(const char *name)
1168{
1169 size_t len = strlen(name);
1170 int i = lookup_env(environ, name, len);
1171 if (i >= 0)
1172 return environ[i] + len + 1; /* skip past name and '=' */
1173 return getenv(name);
1174}
1175
06bc4b79
JS
1176char *mingw_getenv(const char *name)
1177{
df599e96 1178 char *result = getenv_cs(name);
06bc4b79
JS
1179 if (!result && !strcmp(name, "TMPDIR")) {
1180 /* on Windows it is TMP and TEMP */
df599e96 1181 result = getenv_cs("TMP");
06bc4b79 1182 if (!result)
df599e96 1183 result = getenv_cs("TEMP");
06bc4b79
JS
1184 }
1185 return result;
1186}
1187
fe3b2b7b
MS
1188/*
1189 * Note, this isn't a complete replacement for getaddrinfo. It assumes
0353a0c4 1190 * that service contains a numerical port, or that it is null. It
fe3b2b7b
MS
1191 * does a simple search using gethostbyname, and returns one IPv4 host
1192 * if one was found.
1193 */
1194static int WSAAPI getaddrinfo_stub(const char *node, const char *service,
1195 const struct addrinfo *hints,
1196 struct addrinfo **res)
1197{
cbefd2d6 1198 struct hostent *h = NULL;
fe3b2b7b
MS
1199 struct addrinfo *ai;
1200 struct sockaddr_in *sin;
1201
cbefd2d6
MS
1202 if (node) {
1203 h = gethostbyname(node);
1204 if (!h)
1205 return WSAGetLastError();
1206 }
fe3b2b7b
MS
1207
1208 ai = xmalloc(sizeof(struct addrinfo));
1209 *res = ai;
1210 ai->ai_flags = 0;
1211 ai->ai_family = AF_INET;
cbefd2d6
MS
1212 ai->ai_socktype = hints ? hints->ai_socktype : 0;
1213 switch (ai->ai_socktype) {
fe3b2b7b
MS
1214 case SOCK_STREAM:
1215 ai->ai_protocol = IPPROTO_TCP;
1216 break;
1217 case SOCK_DGRAM:
1218 ai->ai_protocol = IPPROTO_UDP;
1219 break;
1220 default:
1221 ai->ai_protocol = 0;
1222 break;
1223 }
1224 ai->ai_addrlen = sizeof(struct sockaddr_in);
cbefd2d6 1225 if (hints && (hints->ai_flags & AI_CANONNAME))
040a6551 1226 ai->ai_canonname = h ? xstrdup(h->h_name) : NULL;
cbefd2d6
MS
1227 else
1228 ai->ai_canonname = NULL;
fe3b2b7b
MS
1229
1230 sin = xmalloc(ai->ai_addrlen);
1231 memset(sin, 0, ai->ai_addrlen);
1232 sin->sin_family = AF_INET;
cbefd2d6
MS
1233 /* Note: getaddrinfo is supposed to allow service to be a string,
1234 * which should be looked up using getservbyname. This is
1235 * currently not implemented */
fe3b2b7b
MS
1236 if (service)
1237 sin->sin_port = htons(atoi(service));
cbefd2d6
MS
1238 if (h)
1239 sin->sin_addr = *(struct in_addr *)h->h_addr;
1240 else if (hints && (hints->ai_flags & AI_PASSIVE))
1241 sin->sin_addr.s_addr = INADDR_ANY;
1242 else
1243 sin->sin_addr.s_addr = INADDR_LOOPBACK;
fe3b2b7b 1244 ai->ai_addr = (struct sockaddr *)sin;
657b35f4 1245 ai->ai_next = NULL;
fe3b2b7b
MS
1246 return 0;
1247}
1248
1249static void WSAAPI freeaddrinfo_stub(struct addrinfo *res)
1250{
1251 free(res->ai_canonname);
1252 free(res->ai_addr);
1253 free(res);
1254}
1255
1256static int WSAAPI getnameinfo_stub(const struct sockaddr *sa, socklen_t salen,
1257 char *host, DWORD hostlen,
1258 char *serv, DWORD servlen, int flags)
1259{
1260 const struct sockaddr_in *sin = (const struct sockaddr_in *)sa;
1261 if (sa->sa_family != AF_INET)
1262 return EAI_FAMILY;
1263 if (!host && !serv)
1264 return EAI_NONAME;
1265
1266 if (host && hostlen > 0) {
1267 struct hostent *ent = NULL;
1268 if (!(flags & NI_NUMERICHOST))
1269 ent = gethostbyaddr((const char *)&sin->sin_addr,
1270 sizeof(sin->sin_addr), AF_INET);
1271
1272 if (ent)
1273 snprintf(host, hostlen, "%s", ent->h_name);
1274 else if (flags & NI_NAMEREQD)
1275 return EAI_NONAME;
1276 else
1277 snprintf(host, hostlen, "%s", inet_ntoa(sin->sin_addr));
1278 }
1279
1280 if (serv && servlen > 0) {
1281 struct servent *ent = NULL;
1282 if (!(flags & NI_NUMERICSERV))
1283 ent = getservbyport(sin->sin_port,
1284 flags & NI_DGRAM ? "udp" : "tcp");
1285
1286 if (ent)
1287 snprintf(serv, servlen, "%s", ent->s_name);
1288 else
1289 snprintf(serv, servlen, "%d", ntohs(sin->sin_port));
1290 }
1291
1292 return 0;
1293}
1294
1295static HMODULE ipv6_dll = NULL;
1296static void (WSAAPI *ipv6_freeaddrinfo)(struct addrinfo *res);
1297static int (WSAAPI *ipv6_getaddrinfo)(const char *node, const char *service,
1298 const struct addrinfo *hints,
1299 struct addrinfo **res);
1300static int (WSAAPI *ipv6_getnameinfo)(const struct sockaddr *sa, socklen_t salen,
1301 char *host, DWORD hostlen,
1302 char *serv, DWORD servlen, int flags);
1303/*
1304 * gai_strerror is an inline function in the ws2tcpip.h header, so we
1305 * don't need to try to load that one dynamically.
1306 */
1307
1308static void socket_cleanup(void)
1309{
1310 WSACleanup();
1311 if (ipv6_dll)
1312 FreeLibrary(ipv6_dll);
1313 ipv6_dll = NULL;
1314 ipv6_freeaddrinfo = freeaddrinfo_stub;
1315 ipv6_getaddrinfo = getaddrinfo_stub;
1316 ipv6_getnameinfo = getnameinfo_stub;
1317}
1318
b7cc9f82 1319static void ensure_socket_initialization(void)
746fb857
JS
1320{
1321 WSADATA wsa;
b7cc9f82 1322 static int initialized = 0;
fe3b2b7b
MS
1323 const char *libraries[] = { "ws2_32.dll", "wship6.dll", NULL };
1324 const char **name;
b7cc9f82
MS
1325
1326 if (initialized)
1327 return;
746fb857
JS
1328
1329 if (WSAStartup(MAKEWORD(2,2), &wsa))
1330 die("unable to initialize winsock subsystem, error %d",
1331 WSAGetLastError());
fe3b2b7b
MS
1332
1333 for (name = libraries; *name; name++) {
1334 ipv6_dll = LoadLibrary(*name);
1335 if (!ipv6_dll)
1336 continue;
1337
1338 ipv6_freeaddrinfo = (void (WSAAPI *)(struct addrinfo *))
1339 GetProcAddress(ipv6_dll, "freeaddrinfo");
1340 ipv6_getaddrinfo = (int (WSAAPI *)(const char *, const char *,
1341 const struct addrinfo *,
1342 struct addrinfo **))
1343 GetProcAddress(ipv6_dll, "getaddrinfo");
1344 ipv6_getnameinfo = (int (WSAAPI *)(const struct sockaddr *,
1345 socklen_t, char *, DWORD,
1346 char *, DWORD, int))
1347 GetProcAddress(ipv6_dll, "getnameinfo");
1348 if (!ipv6_freeaddrinfo || !ipv6_getaddrinfo || !ipv6_getnameinfo) {
1349 FreeLibrary(ipv6_dll);
1350 ipv6_dll = NULL;
1351 } else
1352 break;
1353 }
1354 if (!ipv6_freeaddrinfo || !ipv6_getaddrinfo || !ipv6_getnameinfo) {
1355 ipv6_freeaddrinfo = freeaddrinfo_stub;
1356 ipv6_getaddrinfo = getaddrinfo_stub;
1357 ipv6_getnameinfo = getnameinfo_stub;
1358 }
1359
1360 atexit(socket_cleanup);
b7cc9f82
MS
1361 initialized = 1;
1362}
1363
13d24b01
PT
1364#undef gethostname
1365int mingw_gethostname(char *name, int namelen)
1366{
1367 ensure_socket_initialization();
1368 return gethostname(name, namelen);
1369}
1370
b7cc9f82
MS
1371#undef gethostbyname
1372struct hostent *mingw_gethostbyname(const char *host)
1373{
1374 ensure_socket_initialization();
746fb857
JS
1375 return gethostbyname(host);
1376}
1377
fe3b2b7b
MS
1378void mingw_freeaddrinfo(struct addrinfo *res)
1379{
1380 ipv6_freeaddrinfo(res);
1381}
1382
1383int mingw_getaddrinfo(const char *node, const char *service,
1384 const struct addrinfo *hints, struct addrinfo **res)
1385{
1386 ensure_socket_initialization();
1387 return ipv6_getaddrinfo(node, service, hints, res);
1388}
1389
1390int mingw_getnameinfo(const struct sockaddr *sa, socklen_t salen,
1391 char *host, DWORD hostlen, char *serv, DWORD servlen,
1392 int flags)
1393{
1394 ensure_socket_initialization();
1395 return ipv6_getnameinfo(sa, salen, host, hostlen, serv, servlen, flags);
1396}
1397
746fb857
JS
1398int mingw_socket(int domain, int type, int protocol)
1399{
1400 int sockfd;
772991af
MP
1401 SOCKET s;
1402
1403 ensure_socket_initialization();
1404 s = WSASocket(domain, type, protocol, NULL, 0, 0);
746fb857
JS
1405 if (s == INVALID_SOCKET) {
1406 /*
1407 * WSAGetLastError() values are regular BSD error codes
1408 * biased by WSABASEERR.
1409 * However, strerror() does not know about networking
1410 * specific errors, which are values beginning at 38 or so.
1411 * Therefore, we choose to leave the biased error code
1412 * in errno so that _if_ someone looks up the code somewhere,
1413 * then it is at least the number that are usually listed.
1414 */
1415 errno = WSAGetLastError();
1416 return -1;
1417 }
1418 /* convert into a file descriptor */
1419 if ((sockfd = _open_osfhandle(s, O_RDWR|O_BINARY)) < 0) {
1420 closesocket(s);
1421 return error("unable to make a socket file descriptor: %s",
1422 strerror(errno));
1423 }
1424 return sockfd;
1425}
1426
1427#undef connect
1428int mingw_connect(int sockfd, struct sockaddr *sa, size_t sz)
1429{
1430 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
1431 return connect(s, sa, sz);
1432}
1433
772991af
MP
1434#undef bind
1435int mingw_bind(int sockfd, struct sockaddr *sa, size_t sz)
1436{
1437 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
1438 return bind(s, sa, sz);
1439}
1440
1441#undef setsockopt
1442int mingw_setsockopt(int sockfd, int lvl, int optname, void *optval, int optlen)
1443{
1444 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
1445 return setsockopt(s, lvl, optname, (const char*)optval, optlen);
1446}
1447
a7941795
JS
1448#undef shutdown
1449int mingw_shutdown(int sockfd, int how)
1450{
1451 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
1452 return shutdown(s, how);
1453}
1454
772991af
MP
1455#undef listen
1456int mingw_listen(int sockfd, int backlog)
1457{
1458 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
1459 return listen(s, backlog);
1460}
1461
1462#undef accept
1463int mingw_accept(int sockfd1, struct sockaddr *sa, socklen_t *sz)
1464{
1465 int sockfd2;
1466
1467 SOCKET s1 = (SOCKET)_get_osfhandle(sockfd1);
1468 SOCKET s2 = accept(s1, sa, sz);
1469
1470 /* convert into a file descriptor */
1471 if ((sockfd2 = _open_osfhandle(s2, O_RDWR|O_BINARY)) < 0) {
1472 int err = errno;
1473 closesocket(s2);
1474 return error("unable to make a socket file descriptor: %s",
1475 strerror(err));
1476 }
1477 return sockfd2;
1478}
1479
ea9e98c3
JS
1480#undef rename
1481int mingw_rename(const char *pold, const char *pnew)
1482{
6ac6f878
JS
1483 DWORD attrs, gle;
1484 int tries = 0;
632f7017 1485
ea9e98c3
JS
1486 /*
1487 * Try native rename() first to get errno right.
1488 * It is based on MoveFile(), which cannot overwrite existing files.
1489 */
1490 if (!rename(pold, pnew))
1491 return 0;
1492 if (errno != EEXIST)
1493 return -1;
6ac6f878 1494repeat:
ea9e98c3
JS
1495 if (MoveFileEx(pold, pnew, MOVEFILE_REPLACE_EXISTING))
1496 return 0;
1497 /* TODO: translate more errors */
6ac6f878
JS
1498 gle = GetLastError();
1499 if (gle == ERROR_ACCESS_DENIED &&
632f7017
JS
1500 (attrs = GetFileAttributes(pnew)) != INVALID_FILE_ATTRIBUTES) {
1501 if (attrs & FILE_ATTRIBUTE_DIRECTORY) {
ea9e98c3
JS
1502 errno = EISDIR;
1503 return -1;
1504 }
632f7017
JS
1505 if ((attrs & FILE_ATTRIBUTE_READONLY) &&
1506 SetFileAttributes(pnew, attrs & ~FILE_ATTRIBUTE_READONLY)) {
1507 if (MoveFileEx(pold, pnew, MOVEFILE_REPLACE_EXISTING))
1508 return 0;
6ac6f878 1509 gle = GetLastError();
632f7017
JS
1510 /* revert file attributes on failure */
1511 SetFileAttributes(pnew, attrs);
1512 }
ea9e98c3 1513 }
6ac6f878
JS
1514 if (tries < ARRAY_SIZE(delay) && gle == ERROR_ACCESS_DENIED) {
1515 /*
1516 * We assume that some other process had the source or
1517 * destination file open at the wrong moment and retry.
1518 * In order to give the other process a higher chance to
1519 * complete its operation, we give up our time slice now.
1520 * If we have to retry again, we do sleep a bit.
1521 */
1522 Sleep(delay[tries]);
1523 tries++;
1524 goto repeat;
1525 }
c9b78400
HV
1526 if (gle == ERROR_ACCESS_DENIED &&
1527 ask_yes_no_if_possible("Rename from '%s' to '%s' failed. "
1528 "Should I try again?", pold, pnew))
1529 goto repeat;
1530
ea9e98c3
JS
1531 errno = EACCES;
1532 return -1;
1533}
1534
b1b95204
RJ
1535/*
1536 * Note that this doesn't return the actual pagesize, but
1537 * the allocation granularity. If future Windows specific git code
1538 * needs the real getpagesize function, we need to find another solution.
1539 */
1540int mingw_getpagesize(void)
1541{
1542 SYSTEM_INFO si;
1543 GetSystemInfo(&si);
1544 return si.dwAllocationGranularity;
1545}
1546
f4626df5
JS
1547struct passwd *getpwuid(int uid)
1548{
f7597aca 1549 static char user_name[100];
f4626df5 1550 static struct passwd p;
f7597aca
JS
1551
1552 DWORD len = sizeof(user_name);
1553 if (!GetUserName(user_name, &len))
1554 return NULL;
1555 p.pw_name = user_name;
1556 p.pw_gecos = "unknown";
1557 p.pw_dir = NULL;
f4626df5
JS
1558 return &p;
1559}
1560
6072fc31
JS
1561static HANDLE timer_event;
1562static HANDLE timer_thread;
1563static int timer_interval;
1564static int one_shot;
176478a8 1565static sig_handler_t timer_fn = SIG_DFL, sigint_fn = SIG_DFL;
6072fc31
JS
1566
1567/* The timer works like this:
1568 * The thread, ticktack(), is a trivial routine that most of the time
1569 * only waits to receive the signal to terminate. The main thread tells
1570 * the thread to terminate by setting the timer_event to the signalled
1571 * state.
1572 * But ticktack() interrupts the wait state after the timer's interval
1573 * length to call the signal handler.
1574 */
1575
d7fa500f 1576static unsigned __stdcall ticktack(void *dummy)
6072fc31
JS
1577{
1578 while (WaitForSingleObject(timer_event, timer_interval) == WAIT_TIMEOUT) {
176478a8 1579 mingw_raise(SIGALRM);
6072fc31
JS
1580 if (one_shot)
1581 break;
1582 }
1583 return 0;
1584}
1585
1586static int start_timer_thread(void)
1587{
1588 timer_event = CreateEvent(NULL, FALSE, FALSE, NULL);
1589 if (timer_event) {
1590 timer_thread = (HANDLE) _beginthreadex(NULL, 0, ticktack, NULL, 0, NULL);
1591 if (!timer_thread )
1592 return errno = ENOMEM,
1593 error("cannot start timer thread");
1594 } else
1595 return errno = ENOMEM,
1596 error("cannot allocate resources for timer");
1597 return 0;
1598}
1599
1600static void stop_timer_thread(void)
1601{
1602 if (timer_event)
1603 SetEvent(timer_event); /* tell thread to terminate */
1604 if (timer_thread) {
1605 int rc = WaitForSingleObject(timer_thread, 1000);
1606 if (rc == WAIT_TIMEOUT)
1607 error("timer thread did not terminate timely");
1608 else if (rc != WAIT_OBJECT_0)
1609 error("waiting for timer thread failed: %lu",
1610 GetLastError());
1611 CloseHandle(timer_thread);
1612 }
1613 if (timer_event)
1614 CloseHandle(timer_event);
1615 timer_event = NULL;
1616 timer_thread = NULL;
1617}
1618
1619static inline int is_timeval_eq(const struct timeval *i1, const struct timeval *i2)
1620{
1621 return i1->tv_sec == i2->tv_sec && i1->tv_usec == i2->tv_usec;
1622}
1623
f4626df5
JS
1624int setitimer(int type, struct itimerval *in, struct itimerval *out)
1625{
6072fc31
JS
1626 static const struct timeval zero;
1627 static int atexit_done;
1628
1629 if (out != NULL)
1630 return errno = EINVAL,
1631 error("setitimer param 3 != NULL not implemented");
1632 if (!is_timeval_eq(&in->it_interval, &zero) &&
1633 !is_timeval_eq(&in->it_interval, &in->it_value))
1634 return errno = EINVAL,
1635 error("setitimer: it_interval must be zero or eq it_value");
1636
1637 if (timer_thread)
1638 stop_timer_thread();
1639
1640 if (is_timeval_eq(&in->it_value, &zero) &&
1641 is_timeval_eq(&in->it_interval, &zero))
1642 return 0;
1643
1644 timer_interval = in->it_value.tv_sec * 1000 + in->it_value.tv_usec / 1000;
1645 one_shot = is_timeval_eq(&in->it_interval, &zero);
1646 if (!atexit_done) {
1647 atexit(stop_timer_thread);
1648 atexit_done = 1;
1649 }
1650 return start_timer_thread();
f4626df5
JS
1651}
1652
1653int sigaction(int sig, struct sigaction *in, struct sigaction *out)
1654{
6072fc31
JS
1655 if (sig != SIGALRM)
1656 return errno = EINVAL,
1657 error("sigaction only implemented for SIGALRM");
1658 if (out != NULL)
1659 return errno = EINVAL,
1660 error("sigaction: param 3 != NULL not implemented");
1661
1662 timer_fn = in->sa_handler;
1663 return 0;
1664}
1665
1666#undef signal
1667sig_handler_t mingw_signal(int sig, sig_handler_t handler)
1668{
a4540658 1669 sig_handler_t old;
176478a8
EFL
1670
1671 switch (sig) {
1672 case SIGALRM:
a4540658 1673 old = timer_fn;
176478a8
EFL
1674 timer_fn = handler;
1675 break;
1676
1677 case SIGINT:
a4540658 1678 old = sigint_fn;
176478a8
EFL
1679 sigint_fn = handler;
1680 break;
1681
1682 default:
6072fc31 1683 return signal(sig, handler);
176478a8
EFL
1684 }
1685
6072fc31 1686 return old;
f4626df5 1687}
4804aabc 1688
176478a8
EFL
1689#undef raise
1690int mingw_raise(int sig)
1691{
1692 switch (sig) {
1693 case SIGALRM:
1694 if (timer_fn == SIG_DFL) {
1695 if (isatty(STDERR_FILENO))
1696 fputs("Alarm clock\n", stderr);
1697 exit(128 + SIGALRM);
1698 } else if (timer_fn != SIG_IGN)
1699 timer_fn(SIGALRM);
1700 return 0;
1701
1702 case SIGINT:
1703 if (sigint_fn == SIG_DFL)
1704 exit(128 + SIGINT);
1705 else if (sigint_fn != SIG_IGN)
1706 sigint_fn(SIGINT);
1707 return 0;
1708
1709 default:
1710 return raise(sig);
1711 }
1712}
1713
1714
4804aabc
SP
1715static const char *make_backslash_path(const char *path)
1716{
1717 static char buf[PATH_MAX + 1];
1718 char *c;
1719
1720 if (strlcpy(buf, path, PATH_MAX) >= PATH_MAX)
1721 die("Too long path: %.*s", 60, path);
1722
1723 for (c = buf; *c; c++) {
1724 if (*c == '/')
1725 *c = '\\';
1726 }
1727 return buf;
1728}
1729
1730void mingw_open_html(const char *unixpath)
1731{
1732 const char *htmlpath = make_backslash_path(unixpath);
928500e0
JS
1733 typedef HINSTANCE (WINAPI *T)(HWND, const char *,
1734 const char *, const char *, const char *, INT);
1735 T ShellExecute;
1736 HMODULE shell32;
442dada2 1737 int r;
928500e0
JS
1738
1739 shell32 = LoadLibrary("shell32.dll");
1740 if (!shell32)
1741 die("cannot load shell32.dll");
1742 ShellExecute = (T)GetProcAddress(shell32, "ShellExecuteA");
1743 if (!ShellExecute)
1744 die("cannot run browser");
1745
4804aabc 1746 printf("Launching default browser to display HTML ...\n");
442dada2 1747 r = (int)ShellExecute(NULL, "open", htmlpath, NULL, "\\", SW_SHOWNORMAL);
928500e0 1748 FreeLibrary(shell32);
442dada2
PT
1749 /* see the MSDN documentation referring to the result codes here */
1750 if (r <= 32) {
1751 die("failed to launch browser for %.*s", MAX_PATH, unixpath);
1752 }
4804aabc 1753}
7be401e0
PK
1754
1755int link(const char *oldpath, const char *newpath)
1756{
d7fa500f 1757 typedef BOOL (WINAPI *T)(const char*, const char*, LPSECURITY_ATTRIBUTES);
7be401e0
PK
1758 static T create_hard_link = NULL;
1759 if (!create_hard_link) {
1760 create_hard_link = (T) GetProcAddress(
1761 GetModuleHandle("kernel32.dll"), "CreateHardLinkA");
1762 if (!create_hard_link)
1763 create_hard_link = (T)-1;
1764 }
1765 if (create_hard_link == (T)-1) {
1766 errno = ENOSYS;
1767 return -1;
1768 }
1769 if (!create_hard_link(newpath, oldpath, NULL)) {
1770 errno = err_win_to_posix(GetLastError());
1771 return -1;
1772 }
1773 return 0;
1774}
0dbbbc1e 1775
956d86d1 1776pid_t waitpid(pid_t pid, int *status, int options)
52de4db5
EFL
1777{
1778 HANDLE h = OpenProcess(SYNCHRONIZE | PROCESS_QUERY_INFORMATION,
1779 FALSE, pid);
1780 if (!h) {
1781 errno = ECHILD;
1782 return -1;
1783 }
1784
ef7108ca
EFL
1785 if (pid > 0 && options & WNOHANG) {
1786 if (WAIT_OBJECT_0 != WaitForSingleObject(h, 0)) {
1787 CloseHandle(h);
1788 return 0;
1789 }
1790 options &= ~WNOHANG;
1791 }
1792
52de4db5
EFL
1793 if (options == 0) {
1794 struct pinfo_t **ppinfo;
1795 if (WaitForSingleObject(h, INFINITE) != WAIT_OBJECT_0) {
1796 CloseHandle(h);
1797 return 0;
1798 }
1799
1800 if (status)
1801 GetExitCodeProcess(h, (LPDWORD)status);
1802
1803 EnterCriticalSection(&pinfo_cs);
1804
1805 ppinfo = &pinfo;
1806 while (*ppinfo) {
1807 struct pinfo_t *info = *ppinfo;
1808 if (info->pid == pid) {
1809 CloseHandle(info->proc);
1810 *ppinfo = info->next;
1811 free(info);
1812 break;
1813 }
1814 ppinfo = &info->next;
1815 }
1816
1817 LeaveCriticalSection(&pinfo_cs);
1818
1819 CloseHandle(h);
1820 return pid;
1821 }
1822 CloseHandle(h);
1823
1824 errno = EINVAL;
1825 return -1;
1826}
c2369bdf
CZ
1827
1828int mingw_offset_1st_component(const char *path)
1829{
1830 int offset = 0;
1831 if (has_dos_drive_prefix(path))
1832 offset = 2;
1833
1834 /* unc paths */
1835 else if (is_dir_sep(path[0]) && is_dir_sep(path[1])) {
1836
1837 /* skip server name */
1838 char *pos = strpbrk(path + 2, "\\/");
1839 if (!pos)
1840 return 0; /* Error: malformed unc path */
1841
1842 do {
1843 pos++;
1844 } while (*pos && !is_dir_sep(*pos));
1845
1846 offset = pos - path;
1847 }
1848
1849 return offset + is_dir_sep(path[offset]);
1850}
13f1df43 1851
1c950a59
KB
1852int xutftowcsn(wchar_t *wcs, const char *utfs, size_t wcslen, int utflen)
1853{
1854 int upos = 0, wpos = 0;
1855 const unsigned char *utf = (const unsigned char*) utfs;
1856 if (!utf || !wcs || wcslen < 1) {
1857 errno = EINVAL;
1858 return -1;
1859 }
1860 /* reserve space for \0 */
1861 wcslen--;
1862 if (utflen < 0)
1863 utflen = INT_MAX;
1864
1865 while (upos < utflen) {
1866 int c = utf[upos++] & 0xff;
1867 if (utflen == INT_MAX && c == 0)
1868 break;
1869
1870 if (wpos >= wcslen) {
1871 wcs[wpos] = 0;
1872 errno = ERANGE;
1873 return -1;
1874 }
1875
1876 if (c < 0x80) {
1877 /* ASCII */
1878 wcs[wpos++] = c;
1879 } else if (c >= 0xc2 && c < 0xe0 && upos < utflen &&
1880 (utf[upos] & 0xc0) == 0x80) {
1881 /* 2-byte utf-8 */
1882 c = ((c & 0x1f) << 6);
1883 c |= (utf[upos++] & 0x3f);
1884 wcs[wpos++] = c;
1885 } else if (c >= 0xe0 && c < 0xf0 && upos + 1 < utflen &&
1886 !(c == 0xe0 && utf[upos] < 0xa0) && /* over-long encoding */
1887 (utf[upos] & 0xc0) == 0x80 &&
1888 (utf[upos + 1] & 0xc0) == 0x80) {
1889 /* 3-byte utf-8 */
1890 c = ((c & 0x0f) << 12);
1891 c |= ((utf[upos++] & 0x3f) << 6);
1892 c |= (utf[upos++] & 0x3f);
1893 wcs[wpos++] = c;
1894 } else if (c >= 0xf0 && c < 0xf5 && upos + 2 < utflen &&
1895 wpos + 1 < wcslen &&
1896 !(c == 0xf0 && utf[upos] < 0x90) && /* over-long encoding */
1897 !(c == 0xf4 && utf[upos] >= 0x90) && /* > \u10ffff */
1898 (utf[upos] & 0xc0) == 0x80 &&
1899 (utf[upos + 1] & 0xc0) == 0x80 &&
1900 (utf[upos + 2] & 0xc0) == 0x80) {
1901 /* 4-byte utf-8: convert to \ud8xx \udcxx surrogate pair */
1902 c = ((c & 0x07) << 18);
1903 c |= ((utf[upos++] & 0x3f) << 12);
1904 c |= ((utf[upos++] & 0x3f) << 6);
1905 c |= (utf[upos++] & 0x3f);
1906 c -= 0x10000;
1907 wcs[wpos++] = 0xd800 | (c >> 10);
1908 wcs[wpos++] = 0xdc00 | (c & 0x3ff);
1909 } else if (c >= 0xa0) {
1910 /* invalid utf-8 byte, printable unicode char: convert 1:1 */
1911 wcs[wpos++] = c;
1912 } else {
1913 /* invalid utf-8 byte, non-printable unicode: convert to hex */
1914 static const char *hex = "0123456789abcdef";
1915 wcs[wpos++] = hex[c >> 4];
1916 if (wpos < wcslen)
1917 wcs[wpos++] = hex[c & 0x0f];
1918 }
1919 }
1920 wcs[wpos] = 0;
1921 return wpos;
1922}
1923
1924int xwcstoutf(char *utf, const wchar_t *wcs, size_t utflen)
1925{
1926 if (!wcs || !utf || utflen < 1) {
1927 errno = EINVAL;
1928 return -1;
1929 }
1930 utflen = WideCharToMultiByte(CP_UTF8, 0, wcs, -1, utf, utflen, NULL, NULL);
1931 if (utflen)
1932 return utflen - 1;
1933 errno = ERANGE;
1934 return -1;
1935}
1936
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1937void mingw_startup()
1938{
1939 /* copy executable name to argv[0] */
1940 __argv[0] = xstrdup(_pgmptr);
1941
1942 /* initialize critical section for waitpid pinfo_t list */
1943 InitializeCriticalSection(&pinfo_cs);
1944
1945 /* set up default file mode and file modes for stdin/out/err */
1946 _fmode = _O_BINARY;
1947 _setmode(_fileno(stdin), _O_BINARY);
1948 _setmode(_fileno(stdout), _O_BINARY);
1949 _setmode(_fileno(stderr), _O_BINARY);
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1950
1951 /* initialize Unicode console */
1952 winansi_init();
13f1df43 1953}