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Merge branch 'maint'
[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;
58aa3d2a 444 char alt_name[PATH_MAX];
5411bdc4 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 833{
99c3c76d 834 STARTUPINFOW si;
7e5d7768
JS		 835 PROCESS_INFORMATION pi;
836 struct strbuf envblk, args;
99c3c76d 837 wchar_t wcmd[MAX_PATH], wdir[MAX_PATH], *wargs;
7e5d7768
JS		 838 unsigned flags;
839 BOOL ret;
840
841 /* Determine whether or not we are associated to a console */
842 HANDLE cons = CreateFile("CONOUT$", GENERIC_WRITE,
843 FILE_SHARE_WRITE, NULL, OPEN_EXISTING,
844 FILE_ATTRIBUTE_NORMAL, NULL);
845 if (cons == INVALID_HANDLE_VALUE) {
846 /* There is no console associated with this process.
847 * Since the child is a console process, Windows
848 * would normally create a console window. But
849 * since we'll be redirecting std streams, we do
850 * not need the console.
19fb896f
AG		 851 * It is necessary to use DETACHED_PROCESS
852 * instead of CREATE_NO_WINDOW to make ssh
853 * recognize that it has no console.
7e5d7768 854 */
19fb896f 855 flags = DETACHED_PROCESS;
7e5d7768
JS		 856 } else {
857 /* There is already a console. If we specified
19fb896f 858 * DETACHED_PROCESS here, too, Windows would
7e5d7768 859 * disassociate the child from the console.
19fb896f 860 * The same is true for CREATE_NO_WINDOW.
7e5d7768
JS		 861 * Go figure!
862 */
863 flags = 0;
864 CloseHandle(cons);
865 }
866 memset(&si, 0, sizeof(si));
867 si.cb = sizeof(si);
868 si.dwFlags = STARTF_USESTDHANDLES;
eac14f89
KB		 869 si.hStdInput = winansi_get_osfhandle(fhin);
870 si.hStdOutput = winansi_get_osfhandle(fhout);
871 si.hStdError = winansi_get_osfhandle(fherr);
7e5d7768 872
99c3c76d
KB		 873 if (xutftowcs_path(wcmd, cmd) < 0)
874 return -1;
875 if (dir && xutftowcs_path(wdir, dir) < 0)
876 return -1;
877
7e5d7768
JS		 878 /* concatenate argv, quoting args as we go */
879 strbuf_init(&args, 0);
880 if (prepend_cmd) {
881 char *quoted = (char *)quote_arg(cmd);
882 strbuf_addstr(&args, quoted);
883 if (quoted != cmd)
884 free(quoted);
885 }
886 for (; *argv; argv++) {
887 char *quoted = (char *)quote_arg(*argv);
888 if (*args.buf)
889 strbuf_addch(&args, ' ');
890 strbuf_addstr(&args, quoted);
891 if (quoted != *argv)
892 free(quoted);
893 }
894
99c3c76d
KB		 895 wargs = xmalloc((2 * args.len + 1) * sizeof(wchar_t));
896 xutftowcs(wargs, args.buf, 2 * args.len + 1);
897 strbuf_release(&args);
898
7e5d7768
JS		 899 if (env) {
900 int count = 0;
901 char **e, **sorted_env;
902
903 for (e = env; *e; e++)
904 count++;
905
906 /* environment must be sorted */
907 sorted_env = xmalloc(sizeof(*sorted_env) * (count + 1));
908 memcpy(sorted_env, env, sizeof(*sorted_env) * (count + 1));
909 qsort(sorted_env, count, sizeof(*sorted_env), env_compare);
910
911 strbuf_init(&envblk, 0);
912 for (e = sorted_env; *e; e++) {
913 strbuf_addstr(&envblk, *e);
914 strbuf_addch(&envblk, '\0');
915 }
916 free(sorted_env);
917 }
918
919 memset(&pi, 0, sizeof(pi));
99c3c76d
KB		 920 ret = CreateProcessW(wcmd, wargs, NULL, NULL, TRUE, flags,
921 env ? envblk.buf : NULL, dir ? wdir : NULL, &si, &pi);
7e5d7768
JS		 922
923 if (env)
924 strbuf_release(&envblk);
99c3c76d 925 free(wargs);
7e5d7768
JS		 926
927 if (!ret) {
928 errno = ENOENT;
929 return -1;
930 }
931 CloseHandle(pi.hThread);
52de4db5
EFL		 932
933 /*
934 * The process ID is the human-readable identifier of the process
935 * that we want to present in log and error messages. The handle
936 * is not useful for this purpose. But we cannot close it, either,
937 * because it is not possible to turn a process ID into a process
938 * handle after the process terminated.
939 * Keep the handle in a list for waitpid.
940 */
941 EnterCriticalSection(&pinfo_cs);
942 {
943 struct pinfo_t *info = xmalloc(sizeof(struct pinfo_t));
944 info->pid = pi.dwProcessId;
945 info->proc = pi.hProcess;
946 info->next = pinfo;
947 pinfo = info;
948 }
949 LeaveCriticalSection(&pinfo_cs);
950
951 return (pid_t)pi.dwProcessId;
7e5d7768
JS		 952}
953
3e66e47b 954static pid_t mingw_spawnv(const char *cmd, const char **argv, int prepend_cmd)
75301f90 955{
3e66e47b 956 return mingw_spawnve_fd(cmd, argv, environ, NULL, prepend_cmd, 0, 1, 2);
75301f90
JS		 957}
958
959pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **env,
f9a2743c 960 const char *dir,
75301f90 961 int fhin, int fhout, int fherr)
7e5d7768
JS		 962{
963 pid_t pid;
964 char **path = get_path_split();
965 char *prog = path_lookup(cmd, path, 0);
966
967 if (!prog) {
968 errno = ENOENT;
969 pid = -1;
970 }
971 else {
972 const char *interpr = parse_interpreter(prog);
973
974 if (interpr) {
975 const char *argv0 = argv[0];
976 char *iprog = path_lookup(interpr, path, 1);
977 argv[0] = prog;
978 if (!iprog) {
979 errno = ENOENT;
980 pid = -1;
981 }
982 else {
f9a2743c 983 pid = mingw_spawnve_fd(iprog, argv, env, dir, 1,
75301f90 984 fhin, fhout, fherr);
7e5d7768
JS		 985 free(iprog);
986 }
987 argv[0] = argv0;
988 }
989 else
f9a2743c 990 pid = mingw_spawnve_fd(prog, argv, env, dir, 0,
75301f90 991 fhin, fhout, fherr);
7e5d7768
JS		 992 free(prog);
993 }
994 free_path_split(path);
995 return pid;
996}
997
3e66e47b 998static int try_shell_exec(const char *cmd, char *const *argv)
f1a4dfb8
JS		 999{
1000 const char *interpr = parse_interpreter(cmd);
1001 char **path;
1002 char *prog;
1003 int pid = 0;
1004
1005 if (!interpr)
1006 return 0;
1007 path = get_path_split();
1008 prog = path_lookup(interpr, path, 1);
1009 if (prog) {
1010 int argc = 0;
1011 const char **argv2;
1012 while (argv[argc]) argc++;
7e5d7768
JS		 1013 argv2 = xmalloc(sizeof(*argv) * (argc+1));
1014 argv2[0] = (char *)cmd; /* full path to the script file */
1015 memcpy(&argv2[1], &argv[1], sizeof(*argv) * argc);
3e66e47b 1016 pid = mingw_spawnv(prog, argv2, 1);
f1a4dfb8
JS		 1017 if (pid >= 0) {
1018 int status;
1019 if (waitpid(pid, &status, 0) < 0)
1020 status = 255;
1021 exit(status);
1022 }
1023 pid = 1; /* indicate that we tried but failed */
1024 free(prog);
1025 free(argv2);
1026 }
1027 free_path_split(path);
1028 return pid;
1029}
1030
3e66e47b 1031int mingw_execv(const char *cmd, char *const *argv)
f1a4dfb8
JS		 1032{
1033 /* check if git_command is a shell script */
3e66e47b 1034 if (!try_shell_exec(cmd, argv)) {
f1a4dfb8
JS		 1035 int pid, status;
1036
3e66e47b 1037 pid = mingw_spawnv(cmd, (const char **)argv, 0);
f1a4dfb8 1038 if (pid < 0)
570f1e6e 1039 return -1;
f1a4dfb8
JS		 1040 if (waitpid(pid, &status, 0) < 0)
1041 status = 255;
1042 exit(status);
1043 }
570f1e6e 1044 return -1;
f1a4dfb8
JS		 1045}
1046
1696d723 1047int mingw_execvp(const char *cmd, char *const *argv)
f1a4dfb8
JS		 1048{
1049 char **path = get_path_split();
1050 char *prog = path_lookup(cmd, path, 0);
1051
1052 if (prog) {
3e66e47b 1053 mingw_execv(prog, argv);
f1a4dfb8
JS		 1054 free(prog);
1055 } else
1056 errno = ENOENT;
1057
1058 free_path_split(path);
1696d723 1059 return -1;
f1a4dfb8
JS		 1060}
1061
82fc07b7
EFL		 1062int mingw_kill(pid_t pid, int sig)
1063{
1064 if (pid > 0 && sig == SIGTERM) {
1065 HANDLE h = OpenProcess(PROCESS_TERMINATE, FALSE, pid);
1066
1067 if (TerminateProcess(h, -1)) {
1068 CloseHandle(h);
1069 return 0;
1070 }
1071
1072 errno = err_win_to_posix(GetLastError());
1073 CloseHandle(h);
1074 return -1;
64a99eb4
NTND		 1075 } else if (pid > 0 && sig == 0) {
1076 HANDLE h = OpenProcess(PROCESS_QUERY_INFORMATION, FALSE, pid);
1077 if (h) {
1078 CloseHandle(h);
1079 return 0;
1080 }
82fc07b7
EFL		 1081 }
1082
1083 errno = EINVAL;
1084 return -1;
1085}
1086
2affea41 1087static char **copy_environ(void)
ba26f296
JS		 1088{
1089 char **env;
1090 int i = 0;
1091 while (environ[i])
1092 i++;
1093 env = xmalloc((i+1)*sizeof(*env));
1094 for (i = 0; environ[i]; i++)
1095 env[i] = xstrdup(environ[i]);
1096 env[i] = NULL;
1097 return env;
1098}
1099
1100void free_environ(char **env)
1101{
1102 int i;
1103 for (i = 0; env[i]; i++)
1104 free(env[i]);
1105 free(env);
1106}
1107
1108static int lookup_env(char **env, const char *name, size_t nmln)
1109{
1110 int i;
1111
1112 for (i = 0; env[i]; i++) {
1113 if (0 == strncmp(env[i], name, nmln)
1114 && '=' == env[i][nmln])
1115 /* matches */
1116 return i;
1117 }
1118 return -1;
1119}
1120
1121/*
1122 * If name contains '=', then sets the variable, otherwise it unsets it
1123 */
2affea41 1124static char **env_setenv(char **env, const char *name)
ba26f296
JS		 1125{
1126 char *eq = strchrnul(name, '=');
1127 int i = lookup_env(env, name, eq-name);
1128
1129 if (i < 0) {
1130 if (*eq) {
1131 for (i = 0; env[i]; i++)
1132 ;
1133 env = xrealloc(env, (i+2)*sizeof(*env));
1134 env[i] = xstrdup(name);
1135 env[i+1] = NULL;
1136 }
1137 }
1138 else {
1139 free(env[i]);
1140 if (*eq)
1141 env[i] = xstrdup(name);
1142 else
1143 for (; env[i]; i++)
1144 env[i] = env[i+1];
1145 }
1146 return env;
1147}
1148
2affea41
JS		 1149/*
1150 * Copies global environ and adjusts variables as specified by vars.
1151 */
1152char **make_augmented_environ(const char *const *vars)
1153{
1154 char **env = copy_environ();
1155
1156 while (*vars)
1157 env = env_setenv(env, *vars++);
1158 return env;
1159}
1160
06bc4b79 1161#undef getenv
df599e96
JS		 1162
1163/*
1164 * The system's getenv looks up the name in a case-insensitive manner.
1165 * This version tries a case-sensitive lookup and falls back to
1166 * case-insensitive if nothing was found. This is necessary because,
1167 * as a prominent example, CMD sets 'Path', but not 'PATH'.
1168 * Warning: not thread-safe.
1169 */
1170static char *getenv_cs(const char *name)
1171{
1172 size_t len = strlen(name);
1173 int i = lookup_env(environ, name, len);
1174 if (i >= 0)
1175 return environ[i] + len + 1; /* skip past name and '=' */
1176 return getenv(name);
1177}
1178
06bc4b79
JS		 1179char *mingw_getenv(const char *name)
1180{
df599e96 1181 char *result = getenv_cs(name);
06bc4b79
JS		 1182 if (!result && !strcmp(name, "TMPDIR")) {
1183 /* on Windows it is TMP and TEMP */
df599e96 1184 result = getenv_cs("TMP");
06bc4b79 1185 if (!result)
df599e96 1186 result = getenv_cs("TEMP");
06bc4b79
JS		 1187 }
1188 return result;
1189}
1190
fe3b2b7b
MS		 1191/*
1192 * Note, this isn't a complete replacement for getaddrinfo. It assumes
0353a0c4 1193 * that service contains a numerical port, or that it is null. It
fe3b2b7b
MS		 1194 * does a simple search using gethostbyname, and returns one IPv4 host
1195 * if one was found.
1196 */
1197static int WSAAPI getaddrinfo_stub(const char *node, const char *service,
1198 const struct addrinfo *hints,
1199 struct addrinfo **res)
1200{
cbefd2d6 1201 struct hostent *h = NULL;
fe3b2b7b
MS		 1202 struct addrinfo *ai;
1203 struct sockaddr_in *sin;
1204
cbefd2d6
MS		 1205 if (node) {
1206 h = gethostbyname(node);
1207 if (!h)
1208 return WSAGetLastError();
1209 }
fe3b2b7b
MS		 1210
1211 ai = xmalloc(sizeof(struct addrinfo));
1212 *res = ai;
1213 ai->ai_flags = 0;
1214 ai->ai_family = AF_INET;
cbefd2d6
MS		 1215 ai->ai_socktype = hints ? hints->ai_socktype : 0;
1216 switch (ai->ai_socktype) {
fe3b2b7b
MS		 1217 case SOCK_STREAM:
1218 ai->ai_protocol = IPPROTO_TCP;
1219 break;
1220 case SOCK_DGRAM:
1221 ai->ai_protocol = IPPROTO_UDP;
1222 break;
1223 default:
1224 ai->ai_protocol = 0;
1225 break;
1226 }
1227 ai->ai_addrlen = sizeof(struct sockaddr_in);
cbefd2d6 1228 if (hints && (hints->ai_flags & AI_CANONNAME))
040a6551 1229 ai->ai_canonname = h ? xstrdup(h->h_name) : NULL;
cbefd2d6
MS		 1230 else
1231 ai->ai_canonname = NULL;
fe3b2b7b
MS		 1232
1233 sin = xmalloc(ai->ai_addrlen);
1234 memset(sin, 0, ai->ai_addrlen);
1235 sin->sin_family = AF_INET;
cbefd2d6
MS		 1236 /* Note: getaddrinfo is supposed to allow service to be a string,
1237 * which should be looked up using getservbyname. This is
1238 * currently not implemented */
fe3b2b7b
MS		 1239 if (service)
1240 sin->sin_port = htons(atoi(service));
cbefd2d6
MS		 1241 if (h)
1242 sin->sin_addr = *(struct in_addr *)h->h_addr;
1243 else if (hints && (hints->ai_flags & AI_PASSIVE))
1244 sin->sin_addr.s_addr = INADDR_ANY;
1245 else
1246 sin->sin_addr.s_addr = INADDR_LOOPBACK;
fe3b2b7b 1247 ai->ai_addr = (struct sockaddr *)sin;
657b35f4 1248 ai->ai_next = NULL;
fe3b2b7b
MS		 1249 return 0;
1250}
1251
1252static void WSAAPI freeaddrinfo_stub(struct addrinfo *res)
1253{
1254 free(res->ai_canonname);
1255 free(res->ai_addr);
1256 free(res);
1257}
1258
1259static int WSAAPI getnameinfo_stub(const struct sockaddr *sa, socklen_t salen,
1260 char *host, DWORD hostlen,
1261 char *serv, DWORD servlen, int flags)
1262{
1263 const struct sockaddr_in *sin = (const struct sockaddr_in *)sa;
1264 if (sa->sa_family != AF_INET)
1265 return EAI_FAMILY;
1266 if (!host && !serv)
1267 return EAI_NONAME;
1268
1269 if (host && hostlen > 0) {
1270 struct hostent *ent = NULL;
1271 if (!(flags & NI_NUMERICHOST))
1272 ent = gethostbyaddr((const char *)&sin->sin_addr,
1273 sizeof(sin->sin_addr), AF_INET);
1274
1275 if (ent)
1276 snprintf(host, hostlen, "%s", ent->h_name);
1277 else if (flags & NI_NAMEREQD)
1278 return EAI_NONAME;
1279 else
1280 snprintf(host, hostlen, "%s", inet_ntoa(sin->sin_addr));
1281 }
1282
1283 if (serv && servlen > 0) {
1284 struct servent *ent = NULL;
1285 if (!(flags & NI_NUMERICSERV))
1286 ent = getservbyport(sin->sin_port,
1287 flags & NI_DGRAM ? "udp" : "tcp");
1288
1289 if (ent)
1290 snprintf(serv, servlen, "%s", ent->s_name);
1291 else
1292 snprintf(serv, servlen, "%d", ntohs(sin->sin_port));
1293 }
1294
1295 return 0;
1296}
1297
1298static HMODULE ipv6_dll = NULL;
1299static void (WSAAPI *ipv6_freeaddrinfo)(struct addrinfo *res);
1300static int (WSAAPI *ipv6_getaddrinfo)(const char *node, const char *service,
1301 const struct addrinfo *hints,
1302 struct addrinfo **res);
1303static int (WSAAPI *ipv6_getnameinfo)(const struct sockaddr *sa, socklen_t salen,
1304 char *host, DWORD hostlen,
1305 char *serv, DWORD servlen, int flags);
1306/*
1307 * gai_strerror is an inline function in the ws2tcpip.h header, so we
1308 * don't need to try to load that one dynamically.
1309 */
1310
1311static void socket_cleanup(void)
1312{
1313 WSACleanup();
1314 if (ipv6_dll)
1315 FreeLibrary(ipv6_dll);
1316 ipv6_dll = NULL;
1317 ipv6_freeaddrinfo = freeaddrinfo_stub;
1318 ipv6_getaddrinfo = getaddrinfo_stub;
1319 ipv6_getnameinfo = getnameinfo_stub;
1320}
1321
b7cc9f82 1322static void ensure_socket_initialization(void)
746fb857
JS		 1323{
1324 WSADATA wsa;
b7cc9f82 1325 static int initialized = 0;
fe3b2b7b
MS		 1326 const char *libraries[] = { "ws2_32.dll", "wship6.dll", NULL };
1327 const char **name;
b7cc9f82
MS		 1328
1329 if (initialized)
1330 return;
746fb857
JS		 1331
1332 if (WSAStartup(MAKEWORD(2,2), &wsa))
1333 die("unable to initialize winsock subsystem, error %d",
1334 WSAGetLastError());
fe3b2b7b
MS		 1335
1336 for (name = libraries; *name; name++) {
1337 ipv6_dll = LoadLibrary(*name);
1338 if (!ipv6_dll)
1339 continue;
1340
1341 ipv6_freeaddrinfo = (void (WSAAPI *)(struct addrinfo *))
1342 GetProcAddress(ipv6_dll, "freeaddrinfo");
1343 ipv6_getaddrinfo = (int (WSAAPI *)(const char *, const char *,
1344 const struct addrinfo *,
1345 struct addrinfo **))
1346 GetProcAddress(ipv6_dll, "getaddrinfo");
1347 ipv6_getnameinfo = (int (WSAAPI *)(const struct sockaddr *,
1348 socklen_t, char *, DWORD,
1349 char *, DWORD, int))
1350 GetProcAddress(ipv6_dll, "getnameinfo");
1351 if (!ipv6_freeaddrinfo || !ipv6_getaddrinfo || !ipv6_getnameinfo) {
1352 FreeLibrary(ipv6_dll);
1353 ipv6_dll = NULL;
1354 } else
1355 break;
1356 }
1357 if (!ipv6_freeaddrinfo || !ipv6_getaddrinfo || !ipv6_getnameinfo) {
1358 ipv6_freeaddrinfo = freeaddrinfo_stub;
1359 ipv6_getaddrinfo = getaddrinfo_stub;
1360 ipv6_getnameinfo = getnameinfo_stub;
1361 }
1362
1363 atexit(socket_cleanup);
b7cc9f82
MS		 1364 initialized = 1;
1365}
1366
13d24b01
PT		 1367#undef gethostname
1368int mingw_gethostname(char *name, int namelen)
1369{
1370 ensure_socket_initialization();
1371 return gethostname(name, namelen);
1372}
1373
b7cc9f82
MS		 1374#undef gethostbyname
1375struct hostent *mingw_gethostbyname(const char *host)
1376{
1377 ensure_socket_initialization();
746fb857
JS		 1378 return gethostbyname(host);
1379}
1380
fe3b2b7b
MS		 1381void mingw_freeaddrinfo(struct addrinfo *res)
1382{
1383 ipv6_freeaddrinfo(res);
1384}
1385
1386int mingw_getaddrinfo(const char *node, const char *service,
1387 const struct addrinfo *hints, struct addrinfo **res)
1388{
1389 ensure_socket_initialization();
1390 return ipv6_getaddrinfo(node, service, hints, res);
1391}
1392
1393int mingw_getnameinfo(const struct sockaddr *sa, socklen_t salen,
1394 char *host, DWORD hostlen, char *serv, DWORD servlen,
1395 int flags)
1396{
1397 ensure_socket_initialization();
1398 return ipv6_getnameinfo(sa, salen, host, hostlen, serv, servlen, flags);
1399}
1400
746fb857
JS		 1401int mingw_socket(int domain, int type, int protocol)
1402{
1403 int sockfd;
772991af
MP		 1404 SOCKET s;
1405
1406 ensure_socket_initialization();
1407 s = WSASocket(domain, type, protocol, NULL, 0, 0);
746fb857
JS		 1408 if (s == INVALID_SOCKET) {
1409 /*
1410 * WSAGetLastError() values are regular BSD error codes
1411 * biased by WSABASEERR.
1412 * However, strerror() does not know about networking
1413 * specific errors, which are values beginning at 38 or so.
1414 * Therefore, we choose to leave the biased error code
1415 * in errno so that _if_ someone looks up the code somewhere,
1416 * then it is at least the number that are usually listed.
1417 */
1418 errno = WSAGetLastError();
1419 return -1;
1420 }
1421 /* convert into a file descriptor */
1422 if ((sockfd = _open_osfhandle(s, O_RDWR|O_BINARY)) < 0) {
1423 closesocket(s);
1424 return error("unable to make a socket file descriptor: %s",
1425 strerror(errno));
1426 }
1427 return sockfd;
1428}
1429
1430#undef connect
1431int mingw_connect(int sockfd, struct sockaddr *sa, size_t sz)
1432{
1433 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
1434 return connect(s, sa, sz);
1435}
1436
772991af
MP		 1437#undef bind
1438int mingw_bind(int sockfd, struct sockaddr *sa, size_t sz)
1439{
1440 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
1441 return bind(s, sa, sz);
1442}
1443
1444#undef setsockopt
1445int mingw_setsockopt(int sockfd, int lvl, int optname, void *optval, int optlen)
1446{
1447 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
1448 return setsockopt(s, lvl, optname, (const char*)optval, optlen);
1449}
1450
a7941795
JS		 1451#undef shutdown
1452int mingw_shutdown(int sockfd, int how)
1453{
1454 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
1455 return shutdown(s, how);
1456}
1457
772991af
MP		 1458#undef listen
1459int mingw_listen(int sockfd, int backlog)
1460{
1461 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
1462 return listen(s, backlog);
1463}
1464
1465#undef accept
1466int mingw_accept(int sockfd1, struct sockaddr *sa, socklen_t *sz)
1467{
1468 int sockfd2;
1469
1470 SOCKET s1 = (SOCKET)_get_osfhandle(sockfd1);
1471 SOCKET s2 = accept(s1, sa, sz);
1472
1473 /* convert into a file descriptor */
1474 if ((sockfd2 = _open_osfhandle(s2, O_RDWR|O_BINARY)) < 0) {
1475 int err = errno;
1476 closesocket(s2);
1477 return error("unable to make a socket file descriptor: %s",
1478 strerror(err));
1479 }
1480 return sockfd2;
1481}
1482
ea9e98c3
JS		 1483#undef rename
1484int mingw_rename(const char *pold, const char *pnew)
1485{
6ac6f878
JS		 1486 DWORD attrs, gle;
1487 int tries = 0;
632f7017 1488
ea9e98c3
JS		 1489 /*
1490 * Try native rename() first to get errno right.
1491 * It is based on MoveFile(), which cannot overwrite existing files.
1492 */
1493 if (!rename(pold, pnew))
1494 return 0;
1495 if (errno != EEXIST)
1496 return -1;
6ac6f878 1497repeat:
ea9e98c3
JS		 1498 if (MoveFileEx(pold, pnew, MOVEFILE_REPLACE_EXISTING))
1499 return 0;
1500 /* TODO: translate more errors */
6ac6f878
JS		 1501 gle = GetLastError();
1502 if (gle == ERROR_ACCESS_DENIED &&
632f7017
JS		 1503 (attrs = GetFileAttributes(pnew)) != INVALID_FILE_ATTRIBUTES) {
1504 if (attrs & FILE_ATTRIBUTE_DIRECTORY) {
ea9e98c3
JS		 1505 errno = EISDIR;
1506 return -1;
1507 }
632f7017
JS		 1508 if ((attrs & FILE_ATTRIBUTE_READONLY) &&
1509 SetFileAttributes(pnew, attrs & ~FILE_ATTRIBUTE_READONLY)) {
1510 if (MoveFileEx(pold, pnew, MOVEFILE_REPLACE_EXISTING))
1511 return 0;
6ac6f878 1512 gle = GetLastError();
632f7017
JS		 1513 /* revert file attributes on failure */
1514 SetFileAttributes(pnew, attrs);
1515 }
ea9e98c3 1516 }
6ac6f878
JS		 1517 if (tries < ARRAY_SIZE(delay) && gle == ERROR_ACCESS_DENIED) {
1518 /*
1519 * We assume that some other process had the source or
1520 * destination file open at the wrong moment and retry.
1521 * In order to give the other process a higher chance to
1522 * complete its operation, we give up our time slice now.
1523 * If we have to retry again, we do sleep a bit.
1524 */
1525 Sleep(delay[tries]);
1526 tries++;
1527 goto repeat;
1528 }
c9b78400
HV		 1529 if (gle == ERROR_ACCESS_DENIED &&
1530 ask_yes_no_if_possible("Rename from '%s' to '%s' failed. "
1531 "Should I try again?", pold, pnew))
1532 goto repeat;
1533
ea9e98c3
JS		 1534 errno = EACCES;
1535 return -1;
1536}
1537
b1b95204
RJ		 1538/*
1539 * Note that this doesn't return the actual pagesize, but
1540 * the allocation granularity. If future Windows specific git code
1541 * needs the real getpagesize function, we need to find another solution.
1542 */
1543int mingw_getpagesize(void)
1544{
1545 SYSTEM_INFO si;
1546 GetSystemInfo(&si);
1547 return si.dwAllocationGranularity;
1548}
1549
f4626df5
JS		 1550struct passwd *getpwuid(int uid)
1551{
f7597aca 1552 static char user_name[100];
f4626df5 1553 static struct passwd p;
f7597aca
JS		 1554
1555 DWORD len = sizeof(user_name);
1556 if (!GetUserName(user_name, &len))
1557 return NULL;
1558 p.pw_name = user_name;
1559 p.pw_gecos = "unknown";
1560 p.pw_dir = NULL;
f4626df5
JS		 1561 return &p;
1562}
1563
6072fc31
JS		 1564static HANDLE timer_event;
1565static HANDLE timer_thread;
1566static int timer_interval;
1567static int one_shot;
176478a8 1568static sig_handler_t timer_fn = SIG_DFL, sigint_fn = SIG_DFL;
6072fc31
JS		 1569
1570/* The timer works like this:
1571 * The thread, ticktack(), is a trivial routine that most of the time
1572 * only waits to receive the signal to terminate. The main thread tells
1573 * the thread to terminate by setting the timer_event to the signalled
1574 * state.
1575 * But ticktack() interrupts the wait state after the timer's interval
1576 * length to call the signal handler.
1577 */
1578
d7fa500f 1579static unsigned __stdcall ticktack(void *dummy)
6072fc31
JS		 1580{
1581 while (WaitForSingleObject(timer_event, timer_interval) == WAIT_TIMEOUT) {
176478a8 1582 mingw_raise(SIGALRM);
6072fc31
JS		 1583 if (one_shot)
1584 break;
1585 }
1586 return 0;
1587}
1588
1589static int start_timer_thread(void)
1590{
1591 timer_event = CreateEvent(NULL, FALSE, FALSE, NULL);
1592 if (timer_event) {
1593 timer_thread = (HANDLE) _beginthreadex(NULL, 0, ticktack, NULL, 0, NULL);
1594 if (!timer_thread )
1595 return errno = ENOMEM,
1596 error("cannot start timer thread");
1597 } else
1598 return errno = ENOMEM,
1599 error("cannot allocate resources for timer");
1600 return 0;
1601}
1602
1603static void stop_timer_thread(void)
1604{
1605 if (timer_event)
1606 SetEvent(timer_event); /* tell thread to terminate */
1607 if (timer_thread) {
1608 int rc = WaitForSingleObject(timer_thread, 1000);
1609 if (rc == WAIT_TIMEOUT)
1610 error("timer thread did not terminate timely");
1611 else if (rc != WAIT_OBJECT_0)
1612 error("waiting for timer thread failed: %lu",
1613 GetLastError());
1614 CloseHandle(timer_thread);
1615 }
1616 if (timer_event)
1617 CloseHandle(timer_event);
1618 timer_event = NULL;
1619 timer_thread = NULL;
1620}
1621
1622static inline int is_timeval_eq(const struct timeval *i1, const struct timeval *i2)
1623{
1624 return i1->tv_sec == i2->tv_sec && i1->tv_usec == i2->tv_usec;
1625}
1626
f4626df5
JS		 1627int setitimer(int type, struct itimerval *in, struct itimerval *out)
1628{
6072fc31
JS		 1629 static const struct timeval zero;
1630 static int atexit_done;
1631
1632 if (out != NULL)
1633 return errno = EINVAL,
1634 error("setitimer param 3 != NULL not implemented");
1635 if (!is_timeval_eq(&in->it_interval, &zero) &&
1636 !is_timeval_eq(&in->it_interval, &in->it_value))
1637 return errno = EINVAL,
1638 error("setitimer: it_interval must be zero or eq it_value");
1639
1640 if (timer_thread)
1641 stop_timer_thread();
1642
1643 if (is_timeval_eq(&in->it_value, &zero) &&
1644 is_timeval_eq(&in->it_interval, &zero))
1645 return 0;
1646
1647 timer_interval = in->it_value.tv_sec * 1000 + in->it_value.tv_usec / 1000;
1648 one_shot = is_timeval_eq(&in->it_interval, &zero);
1649 if (!atexit_done) {
1650 atexit(stop_timer_thread);
1651 atexit_done = 1;
1652 }
1653 return start_timer_thread();
f4626df5
JS		 1654}
1655
1656int sigaction(int sig, struct sigaction *in, struct sigaction *out)
1657{
6072fc31
JS		 1658 if (sig != SIGALRM)
1659 return errno = EINVAL,
1660 error("sigaction only implemented for SIGALRM");
1661 if (out != NULL)
1662 return errno = EINVAL,
1663 error("sigaction: param 3 != NULL not implemented");
1664
1665 timer_fn = in->sa_handler;
1666 return 0;
1667}
1668
1669#undef signal
1670sig_handler_t mingw_signal(int sig, sig_handler_t handler)
1671{
a4540658 1672 sig_handler_t old;
176478a8
EFL		 1673
1674 switch (sig) {
1675 case SIGALRM:
a4540658 1676 old = timer_fn;
176478a8
EFL		 1677 timer_fn = handler;
1678 break;
1679
1680 case SIGINT:
a4540658 1681 old = sigint_fn;
176478a8
EFL		 1682 sigint_fn = handler;
1683 break;
1684
1685 default:
6072fc31 1686 return signal(sig, handler);
176478a8
EFL		 1687 }
1688
6072fc31 1689 return old;
f4626df5 1690}
4804aabc 1691
176478a8
EFL		 1692#undef raise
1693int mingw_raise(int sig)
1694{
1695 switch (sig) {
1696 case SIGALRM:
1697 if (timer_fn == SIG_DFL) {
1698 if (isatty(STDERR_FILENO))
1699 fputs("Alarm clock\n", stderr);
1700 exit(128 + SIGALRM);
1701 } else if (timer_fn != SIG_IGN)
1702 timer_fn(SIGALRM);
1703 return 0;
1704
1705 case SIGINT:
1706 if (sigint_fn == SIG_DFL)
1707 exit(128 + SIGINT);
1708 else if (sigint_fn != SIG_IGN)
1709 sigint_fn(SIGINT);
1710 return 0;
1711
1712 default:
1713 return raise(sig);
1714 }
1715}
1716
1717
4804aabc
SP		 1718static const char *make_backslash_path(const char *path)
1719{
1720 static char buf[PATH_MAX + 1];
1721 char *c;
1722
1723 if (strlcpy(buf, path, PATH_MAX) >= PATH_MAX)
1724 die("Too long path: %.*s", 60, path);
1725
1726 for (c = buf; *c; c++) {
1727 if (*c == '/')
1728 *c = '\\';
1729 }
1730 return buf;
1731}
1732
1733void mingw_open_html(const char *unixpath)
1734{
1735 const char *htmlpath = make_backslash_path(unixpath);
928500e0
JS		 1736 typedef HINSTANCE (WINAPI *T)(HWND, const char *,
1737 const char *, const char *, const char *, INT);
1738 T ShellExecute;
1739 HMODULE shell32;
442dada2 1740 int r;
928500e0
JS		 1741
1742 shell32 = LoadLibrary("shell32.dll");
1743 if (!shell32)
1744 die("cannot load shell32.dll");
1745 ShellExecute = (T)GetProcAddress(shell32, "ShellExecuteA");
1746 if (!ShellExecute)
1747 die("cannot run browser");
1748
4804aabc 1749 printf("Launching default browser to display HTML ...\n");
442dada2 1750 r = (int)ShellExecute(NULL, "open", htmlpath, NULL, "\\", SW_SHOWNORMAL);
928500e0 1751 FreeLibrary(shell32);
442dada2
PT		 1752 /* see the MSDN documentation referring to the result codes here */
1753 if (r <= 32) {
1754 die("failed to launch browser for %.*s", MAX_PATH, unixpath);
1755 }
4804aabc 1756}
7be401e0
PK		 1757
1758int link(const char *oldpath, const char *newpath)
1759{
d7fa500f 1760 typedef BOOL (WINAPI *T)(const char*, const char*, LPSECURITY_ATTRIBUTES);
7be401e0
PK		 1761 static T create_hard_link = NULL;
1762 if (!create_hard_link) {
1763 create_hard_link = (T) GetProcAddress(
1764 GetModuleHandle("kernel32.dll"), "CreateHardLinkA");
1765 if (!create_hard_link)
1766 create_hard_link = (T)-1;
1767 }
1768 if (create_hard_link == (T)-1) {
1769 errno = ENOSYS;
1770 return -1;
1771 }
1772 if (!create_hard_link(newpath, oldpath, NULL)) {
1773 errno = err_win_to_posix(GetLastError());
1774 return -1;
1775 }
1776 return 0;
1777}
0dbbbc1e 1778
956d86d1 1779pid_t waitpid(pid_t pid, int *status, int options)
52de4db5
EFL		 1780{
1781 HANDLE h = OpenProcess(SYNCHRONIZE | PROCESS_QUERY_INFORMATION,
1782 FALSE, pid);
1783 if (!h) {
1784 errno = ECHILD;
1785 return -1;
1786 }
1787
ef7108ca
EFL		 1788 if (pid > 0 && options & WNOHANG) {
1789 if (WAIT_OBJECT_0 != WaitForSingleObject(h, 0)) {
1790 CloseHandle(h);
1791 return 0;
1792 }
1793 options &= ~WNOHANG;
1794 }
1795
52de4db5
EFL		 1796 if (options == 0) {
1797 struct pinfo_t **ppinfo;
1798 if (WaitForSingleObject(h, INFINITE) != WAIT_OBJECT_0) {
1799 CloseHandle(h);
1800 return 0;
1801 }
1802
1803 if (status)
1804 GetExitCodeProcess(h, (LPDWORD)status);
1805
1806 EnterCriticalSection(&pinfo_cs);
1807
1808 ppinfo = &pinfo;
1809 while (*ppinfo) {
1810 struct pinfo_t *info = *ppinfo;
1811 if (info->pid == pid) {
1812 CloseHandle(info->proc);
1813 *ppinfo = info->next;
1814 free(info);
1815 break;
1816 }
1817 ppinfo = &info->next;
1818 }
1819
1820 LeaveCriticalSection(&pinfo_cs);
1821
1822 CloseHandle(h);
1823 return pid;
1824 }
1825 CloseHandle(h);
1826
1827 errno = EINVAL;
1828 return -1;
1829}
c2369bdf
CZ		 1830
1831int mingw_offset_1st_component(const char *path)
1832{
1833 int offset = 0;
1834 if (has_dos_drive_prefix(path))
1835 offset = 2;
1836
1837 /* unc paths */
1838 else if (is_dir_sep(path[0]) && is_dir_sep(path[1])) {
1839
1840 /* skip server name */
1841 char *pos = strpbrk(path + 2, "\\/");
1842 if (!pos)
1843 return 0; /* Error: malformed unc path */
1844
1845 do {
1846 pos++;
1847 } while (*pos && !is_dir_sep(*pos));
1848
1849 offset = pos - path;
1850 }
1851
1852 return offset + is_dir_sep(path[offset]);
1853}
13f1df43 1854
1c950a59
KB		 1855int xutftowcsn(wchar_t *wcs, const char *utfs, size_t wcslen, int utflen)
1856{
1857 int upos = 0, wpos = 0;
1858 const unsigned char *utf = (const unsigned char*) utfs;
1859 if (!utf || !wcs || wcslen < 1) {
1860 errno = EINVAL;
1861 return -1;
1862 }
1863 /* reserve space for \0 */
1864 wcslen--;
1865 if (utflen < 0)
1866 utflen = INT_MAX;
1867
1868 while (upos < utflen) {
1869 int c = utf[upos++] & 0xff;
1870 if (utflen == INT_MAX && c == 0)
1871 break;
1872
1873 if (wpos >= wcslen) {
1874 wcs[wpos] = 0;
1875 errno = ERANGE;
1876 return -1;
1877 }
1878
1879 if (c < 0x80) {
1880 /* ASCII */
1881 wcs[wpos++] = c;
1882 } else if (c >= 0xc2 && c < 0xe0 && upos < utflen &&
1883 (utf[upos] & 0xc0) == 0x80) {
1884 /* 2-byte utf-8 */
1885 c = ((c & 0x1f) << 6);
1886 c |= (utf[upos++] & 0x3f);
1887 wcs[wpos++] = c;
1888 } else if (c >= 0xe0 && c < 0xf0 && upos + 1 < utflen &&
1889 !(c == 0xe0 && utf[upos] < 0xa0) && /* over-long encoding */
1890 (utf[upos] & 0xc0) == 0x80 &&
1891 (utf[upos + 1] & 0xc0) == 0x80) {
1892 /* 3-byte utf-8 */
1893 c = ((c & 0x0f) << 12);
1894 c |= ((utf[upos++] & 0x3f) << 6);
1895 c |= (utf[upos++] & 0x3f);
1896 wcs[wpos++] = c;
1897 } else if (c >= 0xf0 && c < 0xf5 && upos + 2 < utflen &&
1898 wpos + 1 < wcslen &&
1899 !(c == 0xf0 && utf[upos] < 0x90) && /* over-long encoding */
1900 !(c == 0xf4 && utf[upos] >= 0x90) && /* > \u10ffff */
1901 (utf[upos] & 0xc0) == 0x80 &&
1902 (utf[upos + 1] & 0xc0) == 0x80 &&
1903 (utf[upos + 2] & 0xc0) == 0x80) {
1904 /* 4-byte utf-8: convert to \ud8xx \udcxx surrogate pair */
1905 c = ((c & 0x07) << 18);
1906 c |= ((utf[upos++] & 0x3f) << 12);
1907 c |= ((utf[upos++] & 0x3f) << 6);
1908 c |= (utf[upos++] & 0x3f);
1909 c -= 0x10000;
1910 wcs[wpos++] = 0xd800 | (c >> 10);
1911 wcs[wpos++] = 0xdc00 | (c & 0x3ff);
1912 } else if (c >= 0xa0) {
1913 /* invalid utf-8 byte, printable unicode char: convert 1:1 */
1914 wcs[wpos++] = c;
1915 } else {
1916 /* invalid utf-8 byte, non-printable unicode: convert to hex */
1917 static const char *hex = "0123456789abcdef";
1918 wcs[wpos++] = hex[c >> 4];
1919 if (wpos < wcslen)
1920 wcs[wpos++] = hex[c & 0x0f];
1921 }
1922 }
1923 wcs[wpos] = 0;
1924 return wpos;
1925}
1926
1927int xwcstoutf(char *utf, const wchar_t *wcs, size_t utflen)
1928{
1929 if (!wcs || !utf || utflen < 1) {
1930 errno = EINVAL;
1931 return -1;
1932 }
1933 utflen = WideCharToMultiByte(CP_UTF8, 0, wcs, -1, utf, utflen, NULL, NULL);
1934 if (utflen)
1935 return utflen - 1;
1936 errno = ERANGE;
1937 return -1;
1938}
1939
5901dc66
KB		 1940/*
1941 * Disable MSVCRT command line wildcard expansion (__getmainargs called from
1942 * mingw startup code, see init.c in mingw runtime).
1943 */
1944int _CRT_glob = 0;
1945
3f046148
KB		 1946typedef struct {
1947 int newmode;
1948} _startupinfo;
1949
1950extern int __wgetmainargs(int *argc, wchar_t ***argv, wchar_t ***env, int glob,
1951 _startupinfo *si);
1952
1953static NORETURN void die_startup()
1954{
1955 fputs("fatal: not enough memory for initialization", stderr);
1956 exit(128);
1957}
1958
13f1df43
KB		 1959void mingw_startup()
1960{
3f046148
KB		 1961 int i, len, maxlen, argc;
1962 char *buffer;
1963 wchar_t **wenv, **wargv;
1964 _startupinfo si;
1965
1966 /* get wide char arguments and environment */
1967 si.newmode = 0;
1968 if (__wgetmainargs(&argc, &wargv, &wenv, _CRT_glob, &si) < 0)
1969 die_startup();
1970
1971 /* determine size of argv and environ conversion buffer */
1972 maxlen = wcslen(_wpgmptr);
1973 for (i = 1; i < argc; i++)
1974 maxlen = max(maxlen, wcslen(wargv[i]));
1975
1976 /* allocate buffer (wchar_t encodes to max 3 UTF-8 bytes) */
1977 maxlen = 3 * maxlen + 1;
1978 buffer = xmalloc(maxlen);
1979
1980 /* convert command line arguments and environment to UTF-8 */
1981 len = xwcstoutf(buffer, _wpgmptr, maxlen);
1982 __argv[0] = xmemdupz(buffer, len);
1983 for (i = 1; i < argc; i++) {
1984 len = xwcstoutf(buffer, wargv[i], maxlen);
1985 __argv[i] = xmemdupz(buffer, len);
1986 }
1987 free(buffer);
13f1df43
KB		 1988
1989 /* initialize critical section for waitpid pinfo_t list */
1990 InitializeCriticalSection(&pinfo_cs);
1991
1992 /* set up default file mode and file modes for stdin/out/err */
1993 _fmode = _O_BINARY;
1994 _setmode(_fileno(stdin), _O_BINARY);
1995 _setmode(_fileno(stdout), _O_BINARY);
1996 _setmode(_fileno(stderr), _O_BINARY);
eac14f89
KB		 1997
1998 /* initialize Unicode console */
1999 winansi_init();
13f1df43 2000}
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