?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
French translation: copy -> copie.
[git/dscho.git] / compat / mingw.c
blob1eb974fcc907c80dcf9b864be3308254959940f8
1 #include "../git-compat-util.h"
2 #include "win32.h"
3 #include <wchar.h>
4 #include "../strbuf.h"
5 #include "../run-command.h"
6 #include "../cache.h"
7
8 static const int delay[] = { 0, 1, 10, 20, 40 };
9 unsigned int _CRT_fmode = _O_BINARY;
10
11 int err_win_to_posix(DWORD winerr)
12 {
13 int error = ENOSYS;
14 switch(winerr) {
15 case ERROR_ACCESS_DENIED: error = EACCES; break;
16 case ERROR_ACCOUNT_DISABLED: error = EACCES; break;
17 case ERROR_ACCOUNT_RESTRICTION: error = EACCES; break;
18 case ERROR_ALREADY_ASSIGNED: error = EBUSY; break;
19 case ERROR_ALREADY_EXISTS: error = EEXIST; break;
20 case ERROR_ARITHMETIC_OVERFLOW: error = ERANGE; break;
21 case ERROR_BAD_COMMAND: error = EIO; break;
22 case ERROR_BAD_DEVICE: error = ENODEV; break;
23 case ERROR_BAD_DRIVER_LEVEL: error = ENXIO; break;
24 case ERROR_BAD_EXE_FORMAT: error = ENOEXEC; break;
25 case ERROR_BAD_FORMAT: error = ENOEXEC; break;
26 case ERROR_BAD_LENGTH: error = EINVAL; break;
27 case ERROR_BAD_PATHNAME: error = ENOENT; break;
28 case ERROR_BAD_PIPE: error = EPIPE; break;
29 case ERROR_BAD_UNIT: error = ENODEV; break;
30 case ERROR_BAD_USERNAME: error = EINVAL; break;
31 case ERROR_BROKEN_PIPE: error = EPIPE; break;
32 case ERROR_BUFFER_OVERFLOW: error = ENAMETOOLONG; break;
33 case ERROR_BUSY: error = EBUSY; break;
34 case ERROR_BUSY_DRIVE: error = EBUSY; break;
35 case ERROR_CALL_NOT_IMPLEMENTED: error = ENOSYS; break;
36 case ERROR_CANNOT_MAKE: error = EACCES; break;
37 case ERROR_CANTOPEN: error = EIO; break;
38 case ERROR_CANTREAD: error = EIO; break;
39 case ERROR_CANTWRITE: error = EIO; break;
40 case ERROR_CRC: error = EIO; break;
41 case ERROR_CURRENT_DIRECTORY: error = EACCES; break;
42 case ERROR_DEVICE_IN_USE: error = EBUSY; break;
43 case ERROR_DEV_NOT_EXIST: error = ENODEV; break;
44 case ERROR_DIRECTORY: error = EINVAL; break;
45 case ERROR_DIR_NOT_EMPTY: error = ENOTEMPTY; break;
46 case ERROR_DISK_CHANGE: error = EIO; break;
47 case ERROR_DISK_FULL: error = ENOSPC; break;
48 case ERROR_DRIVE_LOCKED: error = EBUSY; break;
49 case ERROR_ENVVAR_NOT_FOUND: error = EINVAL; break;
50 case ERROR_EXE_MARKED_INVALID: error = ENOEXEC; break;
51 case ERROR_FILENAME_EXCED_RANGE: error = ENAMETOOLONG; break;
52 case ERROR_FILE_EXISTS: error = EEXIST; break;
53 case ERROR_FILE_INVALID: error = ENODEV; break;
54 case ERROR_FILE_NOT_FOUND: error = ENOENT; break;
55 case ERROR_GEN_FAILURE: error = EIO; break;
56 case ERROR_HANDLE_DISK_FULL: error = ENOSPC; break;
57 case ERROR_INSUFFICIENT_BUFFER: error = ENOMEM; break;
58 case ERROR_INVALID_ACCESS: error = EACCES; break;
59 case ERROR_INVALID_ADDRESS: error = EFAULT; break;
60 case ERROR_INVALID_BLOCK: error = EFAULT; break;
61 case ERROR_INVALID_DATA: error = EINVAL; break;
62 case ERROR_INVALID_DRIVE: error = ENODEV; break;
63 case ERROR_INVALID_EXE_SIGNATURE: error = ENOEXEC; break;
64 case ERROR_INVALID_FLAGS: error = EINVAL; break;
65 case ERROR_INVALID_FUNCTION: error = ENOSYS; break;
66 case ERROR_INVALID_HANDLE: error = EBADF; break;
67 case ERROR_INVALID_LOGON_HOURS: error = EACCES; break;
68 case ERROR_INVALID_NAME: error = EINVAL; break;
69 case ERROR_INVALID_OWNER: error = EINVAL; break;
70 case ERROR_INVALID_PARAMETER: error = EINVAL; break;
71 case ERROR_INVALID_PASSWORD: error = EPERM; break;
72 case ERROR_INVALID_PRIMARY_GROUP: error = EINVAL; break;
73 case ERROR_INVALID_SIGNAL_NUMBER: error = EINVAL; break;
74 case ERROR_INVALID_TARGET_HANDLE: error = EIO; break;
75 case ERROR_INVALID_WORKSTATION: error = EACCES; break;
76 case ERROR_IO_DEVICE: error = EIO; break;
77 case ERROR_IO_INCOMPLETE: error = EINTR; break;
78 case ERROR_LOCKED: error = EBUSY; break;
79 case ERROR_LOCK_VIOLATION: error = EACCES; break;
80 case ERROR_LOGON_FAILURE: error = EACCES; break;
81 case ERROR_MAPPED_ALIGNMENT: error = EINVAL; break;
82 case ERROR_META_EXPANSION_TOO_LONG: error = E2BIG; break;
83 case ERROR_MORE_DATA: error = EPIPE; break;
84 case ERROR_NEGATIVE_SEEK: error = ESPIPE; break;
85 case ERROR_NOACCESS: error = EFAULT; break;
86 case ERROR_NONE_MAPPED: error = EINVAL; break;
87 case ERROR_NOT_ENOUGH_MEMORY: error = ENOMEM; break;
88 case ERROR_NOT_READY: error = EAGAIN; break;
89 case ERROR_NOT_SAME_DEVICE: error = EXDEV; break;
90 case ERROR_NO_DATA: error = EPIPE; break;
91 case ERROR_NO_MORE_SEARCH_HANDLES: error = EIO; break;
92 case ERROR_NO_PROC_SLOTS: error = EAGAIN; break;
93 case ERROR_NO_SUCH_PRIVILEGE: error = EACCES; break;
94 case ERROR_OPEN_FAILED: error = EIO; break;
95 case ERROR_OPEN_FILES: error = EBUSY; break;
96 case ERROR_OPERATION_ABORTED: error = EINTR; break;
97 case ERROR_OUTOFMEMORY: error = ENOMEM; break;
98 case ERROR_PASSWORD_EXPIRED: error = EACCES; break;
99 case ERROR_PATH_BUSY: error = EBUSY; break;
100 case ERROR_PATH_NOT_FOUND: error = ENOENT; break;
101 case ERROR_PIPE_BUSY: error = EBUSY; break;
102 case ERROR_PIPE_CONNECTED: error = EPIPE; break;
103 case ERROR_PIPE_LISTENING: error = EPIPE; break;
104 case ERROR_PIPE_NOT_CONNECTED: error = EPIPE; break;
105 case ERROR_PRIVILEGE_NOT_HELD: error = EACCES; break;
106 case ERROR_READ_FAULT: error = EIO; break;
107 case ERROR_SEEK: error = EIO; break;
108 case ERROR_SEEK_ON_DEVICE: error = ESPIPE; break;
109 case ERROR_SHARING_BUFFER_EXCEEDED: error = ENFILE; break;
110 case ERROR_SHARING_VIOLATION: error = EACCES; break;
111 case ERROR_STACK_OVERFLOW: error = ENOMEM; break;
112 case ERROR_SWAPERROR: error = ENOENT; break;
113 case ERROR_TOO_MANY_MODULES: error = EMFILE; break;
114 case ERROR_TOO_MANY_OPEN_FILES: error = EMFILE; break;
115 case ERROR_UNRECOGNIZED_MEDIA: error = ENXIO; break;
116 case ERROR_UNRECOGNIZED_VOLUME: error = ENODEV; break;
117 case ERROR_WAIT_NO_CHILDREN: error = ECHILD; break;
118 case ERROR_WRITE_FAULT: error = EIO; break;
119 case ERROR_WRITE_PROTECT: error = EROFS; break;
120 }
121 return error;
122 }
123
124 static inline int is_file_in_use_error(DWORD errcode)
125 {
126 switch (errcode) {
127 case ERROR_SHARING_VIOLATION:
128 case ERROR_ACCESS_DENIED:
129 return 1;
130 }
131
132 return 0;
133 }
134
135 static int read_yes_no_answer(void)
136 {
137 char answer[1024];
138
139 if (fgets(answer, sizeof(answer), stdin)) {
140 size_t answer_len = strlen(answer);
141 int got_full_line = 0, c;
142
143 /* remove the newline */
144 if (answer_len >= 2 && answer[answer_len-2] == '\r') {
145 answer[answer_len-2] = '\0';
146 got_full_line = 1;
147 } else if (answer_len >= 1 && answer[answer_len-1] == '\n') {
148 answer[answer_len-1] = '\0';
149 got_full_line = 1;
150 }
151 /* flush the buffer in case we did not get the full line */
152 if (!got_full_line)
153 while ((c = getchar()) != EOF && c != '\n')
154 ;
155 } else
156 /* we could not read, return the
157 * default answer which is no */
158 return 0;
159
160 if (tolower(answer[0]) == 'y' && !answer[1])
161 return 1;
162 if (!strncasecmp(answer, "yes", sizeof(answer)))
163 return 1;
164 if (tolower(answer[0]) == 'n' && !answer[1])
165 return 0;
166 if (!strncasecmp(answer, "no", sizeof(answer)))
167 return 0;
168
169 /* did not find an answer we understand */
170 return -1;
171 }
172
173 static int ask_yes_no_if_possible(const char *format, ...)
174 {
175 char question[4096];
176 const char *retry_hook[] = { NULL, NULL, NULL };
177 va_list args;
178
179 va_start(args, format);
180 vsnprintf(question, sizeof(question), format, args);
181 va_end(args);
182
183 if ((retry_hook[0] = getenv("GIT_ASK_YESNO"))) {
184 retry_hook[1] = question;
185 return !run_command_v_opt(retry_hook, 0);
186 }
187
188 if (!isatty(_fileno(stdin)) || !isatty(_fileno(stderr)))
189 return 0;
190
191 while (1) {
192 int answer;
193 fprintf(stderr, "%s (y/n) ", question);
194
195 if ((answer = read_yes_no_answer()) >= 0)
196 return answer;
197
198 fprintf(stderr, "Sorry, I did not understand your answer. "
199 "Please type 'y' or 'n'\n");
200 }
201 }
202
203 int mingw_unlink(const char *pathname)
204 {
205 int ret, tries = 0;
206 wchar_t wpathname[MAX_PATH];
207 if (xutftowcs_path(wpathname, pathname) < 0)
208 return -1;
209
210 /* read-only files cannot be removed */
211 _wchmod(wpathname, 0666);
212 while ((ret = _wunlink(wpathname)) == -1 && tries < ARRAY_SIZE(delay)) {
213 if (!is_file_in_use_error(GetLastError()))
214 break;
215 /*
216 * We assume that some other process had the source or
217 * destination file open at the wrong moment and retry.
218 * In order to give the other process a higher chance to
219 * complete its operation, we give up our time slice now.
220 * If we have to retry again, we do sleep a bit.
221 */
222 Sleep(delay[tries]);
223 tries++;
224 }
225 while (ret == -1 && is_file_in_use_error(GetLastError()) &&
226 ask_yes_no_if_possible("Unlink of file '%s' failed. "
227 "Should I try again?", pathname))
228 ret = _wunlink(wpathname);
229 return ret;
230 }
231
232 static int is_dir_empty(const wchar_t *wpath)
233 {
234 WIN32_FIND_DATAW findbuf;
235 HANDLE handle;
236 wchar_t wbuf[MAX_PATH + 2];
237 wcscpy(wbuf, wpath);
238 wcscat(wbuf, L"\\*");
239 handle = FindFirstFileW(wbuf, &findbuf);
240 if (handle == INVALID_HANDLE_VALUE)
241 return GetLastError() == ERROR_NO_MORE_FILES;
242
243 while (!wcscmp(findbuf.cFileName, L".") ||
244 !wcscmp(findbuf.cFileName, L".."))
245 if (!FindNextFileW(handle, &findbuf)) {
246 DWORD err = GetLastError();
247 FindClose(handle);
248 return err == ERROR_NO_MORE_FILES;
249 }
250 FindClose(handle);
251 return 0;
252 }
253
254 int mingw_rmdir(const char *pathname)
255 {
256 int ret, tries = 0;
257 wchar_t wpathname[MAX_PATH];
258 if (xutftowcs_path(wpathname, pathname) < 0)
259 return -1;
260
261 while ((ret = _wrmdir(wpathname)) == -1 && tries < ARRAY_SIZE(delay)) {
262 if (!is_file_in_use_error(GetLastError()))
263 break;
264 if (!is_dir_empty(wpathname)) {
265 errno = ENOTEMPTY;
266 break;
267 }
268 /*
269 * We assume that some other process had the source or
270 * destination file open at the wrong moment and retry.
271 * In order to give the other process a higher chance to
272 * complete its operation, we give up our time slice now.
273 * If we have to retry again, we do sleep a bit.
274 */
275 Sleep(delay[tries]);
276 tries++;
277 }
278 while (ret == -1 && is_file_in_use_error(GetLastError()) &&
279 ask_yes_no_if_possible("Deletion of directory '%s' failed. "
280 "Should I try again?", pathname))
281 ret = _wrmdir(wpathname);
282 return ret;
283 }
284
285 static int make_hidden(const wchar_t *path)
286 {
287 DWORD attribs = GetFileAttributesW(path);
288 if (SetFileAttributesW(path, FILE_ATTRIBUTE_HIDDEN | attribs))
289 return 0;
290 errno = err_win_to_posix(GetLastError());
291 return -1;
292 }
293
294 void mingw_mark_as_git_dir(const char *dir)
295 {
296 wchar_t wdir[MAX_PATH];
297 if (hide_dotfiles != HIDE_DOTFILES_FALSE && !is_bare_repository())
298 if (xutftowcs_path(wdir, dir) < 0 || make_hidden(wdir))
299 warning("Failed to make '%s' hidden", dir);
300 git_config_set("core.hideDotFiles",
301 hide_dotfiles == HIDE_DOTFILES_FALSE ? "false" :
302 (hide_dotfiles == HIDE_DOTFILES_DOTGITONLY ?
303 "dotGitOnly" : "true"));
304 }
305
306 int mingw_mkdir(const char *path, int mode)
307 {
308 int ret;
309 wchar_t wpath[MAX_PATH];
310 if (xutftowcs_path(wpath, path) < 0)
311 return -1;
312 ret = _wmkdir(wpath);
313 if (!ret && hide_dotfiles == HIDE_DOTFILES_TRUE) {
314 /*
315 * In Windows a file or dir starting with a dot is not
316 * automatically hidden. So lets mark it as hidden when
317 * such a directory is created.
318 */
319 const char *start = basename((char*)path);
320 if (*start == '.')
321 return make_hidden(wpath);
322 }
323 return ret;
324 }
325
326 int mingw_open (const char *filename, int oflags, ...)
327 {
328 va_list args;
329 unsigned mode;
330 int fd;
331 wchar_t wfilename[MAX_PATH];
332
333 va_start(args, oflags);
334 mode = va_arg(args, int);
335 va_end(args);
336
337 if (filename && !strcmp(filename, "/dev/null"))
338 filename = "nul";
339
340 if (xutftowcs_path(wfilename, filename) < 0)
341 return -1;
342 fd = _wopen(wfilename, oflags, mode);
343
344 if (fd < 0 && (oflags & O_CREAT) && errno == EACCES) {
345 DWORD attrs = GetFileAttributesW(wfilename);
346 if (attrs != INVALID_FILE_ATTRIBUTES && (attrs & FILE_ATTRIBUTE_DIRECTORY))
347 errno = EISDIR;
348 }
349 if ((oflags & O_CREAT) && fd >= 0 &&
350 hide_dotfiles == HIDE_DOTFILES_TRUE) {
351 /*
352 * In Windows a file or dir starting with a dot is not
353 * automatically hidden. So lets mark it as hidden when
354 * such a file is created.
355 */
356 const char *start = basename((char*)filename);
357 if (*start == '.' && make_hidden(wfilename))
358 warning("Could not mark '%s' as hidden.", filename);
359 }
360 return fd;
361 }
362
363 #undef write
364 ssize_t mingw_write(int fd, const void *buf, size_t count)
365 {
366 /*
367 * While write() calls to a file on a local disk are translated
368 * into WriteFile() calls with a maximum size of 64KB on Windows
369 * XP and 256KB on Vista, no such cap is placed on writes to
370 * files over the network on Windows XP. Unfortunately, there
371 * seems to be a limit of 32MB-28KB on X64 and 64MB-32KB on x86;
372 * bigger writes fail on Windows XP.
373 * So we cap to a nice 31MB here to avoid write failures over
374 * the net without changing the number of WriteFile() calls in
375 * the local case.
376 */
377 return write(fd, buf, min(count, 31 * 1024 * 1024));
378 }
379
380 FILE *mingw_fopen (const char *filename, const char *otype)
381 {
382 int hide = 0;
383 FILE *file;
384 wchar_t wfilename[MAX_PATH], wotype[4];
385 if (hide_dotfiles == HIDE_DOTFILES_TRUE &&
386 basename((char*)filename)[0] == '.')
387 hide = access(filename, F_OK);
388 if (filename && !strcmp(filename, "/dev/null"))
389 filename = "nul";
390 if (xutftowcs_path(wfilename, filename) < 0 ||
391 xutftowcs(wotype, otype, ARRAY_SIZE(wotype)) < 0)
392 return NULL;
393 file = _wfopen(wfilename, wotype);
394 if (file && hide && make_hidden(wfilename))
395 warning("Could not mark '%s' as hidden.", filename);
396 return file;
397 }
398
399 FILE *mingw_freopen (const char *filename, const char *otype, FILE *stream)
400 {
401 int hide = 0;
402 FILE *file;
403 wchar_t wfilename[MAX_PATH], wotype[4];
404 if (hide_dotfiles == HIDE_DOTFILES_TRUE &&
405 basename((char*)filename)[0] == '.')
406 hide = access(filename, F_OK);
407 if (filename && !strcmp(filename, "/dev/null"))
408 filename = "nul";
409 if (xutftowcs_path(wfilename, filename) < 0 ||
410 xutftowcs(wotype, otype, ARRAY_SIZE(wotype)) < 0)
411 return NULL;
412 file = _wfreopen(wfilename, wotype, stream);
413 if (file && hide && make_hidden(wfilename))
414 warning("Could not mark '%s' as hidden.", filename);
415 return file;
416 }
417
418 int mingw_access(const char *filename, int mode)
419 {
420 wchar_t wfilename[MAX_PATH];
421 if (xutftowcs_path(wfilename, filename) < 0)
422 return -1;
423 /* X_OK is not supported by the MSVCRT version */
424 return _waccess(wfilename, mode & ~X_OK);
425 }
426
427 int mingw_chdir(const char *dirname)
428 {
429 wchar_t wdirname[MAX_PATH];
430 if (xutftowcs_path(wdirname, dirname) < 0)
431 return -1;
432 return _wchdir(wdirname);
433 }
434
435 int mingw_chmod(const char *filename, int mode)
436 {
437 wchar_t wfilename[MAX_PATH];
438 if (xutftowcs_path(wfilename, filename) < 0)
439 return -1;
440 return _wchmod(wfilename, mode);
441 }
442
443 /*
444 * The unit of FILETIME is 100-nanoseconds since January 1, 1601, UTC.
445 * Returns the 100-nanoseconds ("hekto nanoseconds") since the epoch.
446 */
447 static inline long long filetime_to_hnsec(const FILETIME *ft)
448 {
449 long long winTime = ((long long)ft->dwHighDateTime << 32) + ft->dwLowDateTime;
450 /* Windows to Unix Epoch conversion */
451 return winTime - 116444736000000000LL;
452 }
453
454 static inline time_t filetime_to_time_t(const FILETIME *ft)
455 {
456 return (time_t)(filetime_to_hnsec(ft) / 10000000);
457 }
458
459 /* We keep the do_lstat code in a separate function to avoid recursion.
460 * When a path ends with a slash, the stat will fail with ENOENT. In
461 * this case, we strip the trailing slashes and stat again.
462 *
463 * If follow is true then act like stat() and report on the link
464 * target. Otherwise report on the link itself.
465 */
466 static int do_lstat(int follow, const char *file_name, struct stat *buf)
467 {
468 WIN32_FILE_ATTRIBUTE_DATA fdata;
469 wchar_t wfilename[MAX_PATH];
470 if (xutftowcs_path(wfilename, file_name) < 0)
471 return -1;
472
473 if (GetFileAttributesExW(wfilename, GetFileExInfoStandard, &fdata)) {
474 buf->st_ino = 0;
475 buf->st_gid = 0;
476 buf->st_uid = 0;
477 buf->st_nlink = 1;
478 buf->st_mode = file_attr_to_st_mode(fdata.dwFileAttributes);
479 buf->st_size = fdata.nFileSizeLow |
480 (((off_t)fdata.nFileSizeHigh)<<32);
481 buf->st_dev = buf->st_rdev = 0; /* not used by Git */
482 buf->st_atime = filetime_to_time_t(&(fdata.ftLastAccessTime));
483 buf->st_mtime = filetime_to_time_t(&(fdata.ftLastWriteTime));
484 buf->st_ctime = filetime_to_time_t(&(fdata.ftCreationTime));
485 if (fdata.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) {
486 WIN32_FIND_DATAW findbuf;
487 HANDLE handle = FindFirstFileW(wfilename, &findbuf);
488 if (handle != INVALID_HANDLE_VALUE) {
489 if ((findbuf.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) &&
490 (findbuf.dwReserved0 == IO_REPARSE_TAG_SYMLINK)) {
491 if (follow) {
492 char buffer[MAXIMUM_REPARSE_DATA_BUFFER_SIZE];
493 buf->st_size = readlink(file_name, buffer, MAXIMUM_REPARSE_DATA_BUFFER_SIZE);
494 } else {
495 buf->st_mode = S_IFLNK;
496 }
497 buf->st_mode |= S_IREAD;
498 if (!(findbuf.dwFileAttributes & FILE_ATTRIBUTE_READONLY))
499 buf->st_mode |= S_IWRITE;
500 }
501 FindClose(handle);
502 }
503 }
504 return 0;
505 }
506 switch (GetLastError()) {
507 case ERROR_ACCESS_DENIED:
508 case ERROR_SHARING_VIOLATION:
509 case ERROR_LOCK_VIOLATION:
510 case ERROR_SHARING_BUFFER_EXCEEDED:
511 errno = EACCES;
512 break;
513 case ERROR_BUFFER_OVERFLOW:
514 errno = ENAMETOOLONG;
515 break;
516 case ERROR_NOT_ENOUGH_MEMORY:
517 errno = ENOMEM;
518 break;
519 default:
520 errno = ENOENT;
521 break;
522 }
523 return -1;
524 }
525
526 /* We provide our own lstat/fstat functions, since the provided
527 * lstat/fstat functions are so slow. These stat functions are
528 * tailored for Git's usage (read: fast), and are not meant to be
529 * complete. Note that Git stat()s are redirected to mingw_lstat()
530 * too, since Windows doesn't really handle symlinks that well.
531 */
532 static int do_stat_internal(int follow, const char *file_name, struct stat *buf)
533 {
534 int namelen;
535 char alt_name[PATH_MAX];
536
537 if (!do_lstat(follow, file_name, buf))
538 return 0;
539
540 /* if file_name ended in a '/', Windows returned ENOENT;
541 * try again without trailing slashes
542 */
543 if (errno != ENOENT)
544 return -1;
545
546 namelen = strlen(file_name);
547 if (namelen && file_name[namelen-1] != '/')
548 return -1;
549 while (namelen && file_name[namelen-1] == '/')
550 --namelen;
551 if (!namelen || namelen >= PATH_MAX)
552 return -1;
553
554 memcpy(alt_name, file_name, namelen);
555 alt_name[namelen] = 0;
556 return do_lstat(follow, alt_name, buf);
557 }
558
559 int mingw_lstat(const char *file_name, struct stat *buf)
560 {
561 return do_stat_internal(0, file_name, buf);
562 }
563 int mingw_stat(const char *file_name, struct stat *buf)
564 {
565 return do_stat_internal(1, file_name, buf);
566 }
567
568 #undef fstat
569 int mingw_fstat(int fd, struct stat *buf)
570 {
571 HANDLE fh = (HANDLE)_get_osfhandle(fd);
572 BY_HANDLE_FILE_INFORMATION fdata;
573
574 if (fh == INVALID_HANDLE_VALUE) {
575 errno = EBADF;
576 return -1;
577 }
578 /* direct non-file handles to MS's fstat() */
579 if (GetFileType(fh) != FILE_TYPE_DISK)
580 return _fstati64(fd, buf);
581
582 if (GetFileInformationByHandle(fh, &fdata)) {
583 buf->st_ino = 0;
584 buf->st_gid = 0;
585 buf->st_uid = 0;
586 buf->st_nlink = 1;
587 buf->st_mode = file_attr_to_st_mode(fdata.dwFileAttributes);
588 buf->st_size = fdata.nFileSizeLow |
589 (((off_t)fdata.nFileSizeHigh)<<32);
590 buf->st_dev = buf->st_rdev = 0; /* not used by Git */
591 buf->st_atime = filetime_to_time_t(&(fdata.ftLastAccessTime));
592 buf->st_mtime = filetime_to_time_t(&(fdata.ftLastWriteTime));
593 buf->st_ctime = filetime_to_time_t(&(fdata.ftCreationTime));
594 return 0;
595 }
596 errno = EBADF;
597 return -1;
598 }
599
600 static inline void time_t_to_filetime(time_t t, FILETIME *ft)
601 {
602 long long winTime = t * 10000000LL + 116444736000000000LL;
603 ft->dwLowDateTime = winTime;
604 ft->dwHighDateTime = winTime >> 32;
605 }
606
607 int mingw_utime (const char *file_name, const struct utimbuf *times)
608 {
609 FILETIME mft, aft;
610 int fh, rc;
611 DWORD attrs;
612 wchar_t wfilename[MAX_PATH];
613 if (xutftowcs_path(wfilename, file_name) < 0)
614 return -1;
615
616 /* must have write permission */
617 attrs = GetFileAttributesW(wfilename);
618 if (attrs != INVALID_FILE_ATTRIBUTES &&
619 (attrs & FILE_ATTRIBUTE_READONLY)) {
620 /* ignore errors here; open() will report them */
621 SetFileAttributesW(wfilename, attrs & ~FILE_ATTRIBUTE_READONLY);
622 }
623
624 if ((fh = _wopen(wfilename, O_RDWR | O_BINARY)) < 0) {
625 rc = -1;
626 goto revert_attrs;
627 }
628
629 if (times) {
630 time_t_to_filetime(times->modtime, &mft);
631 time_t_to_filetime(times->actime, &aft);
632 } else {
633 GetSystemTimeAsFileTime(&mft);
634 aft = mft;
635 }
636 if (!SetFileTime((HANDLE)_get_osfhandle(fh), NULL, &aft, &mft)) {
637 errno = EINVAL;
638 rc = -1;
639 } else
640 rc = 0;
641 close(fh);
642
643 revert_attrs:
644 if (attrs != INVALID_FILE_ATTRIBUTES &&
645 (attrs & FILE_ATTRIBUTE_READONLY)) {
646 /* ignore errors again */
647 SetFileAttributesW(wfilename, attrs);
648 }
649 return rc;
650 }
651
652 unsigned int sleep (unsigned int seconds)
653 {
654 Sleep(seconds*1000);
655 return 0;
656 }
657
658 char *mingw_mktemp(char *template)
659 {
660 wchar_t wtemplate[MAX_PATH];
661 if (xutftowcs_path(wtemplate, template) < 0)
662 return NULL;
663 if (!_wmktemp(wtemplate))
664 return NULL;
665 if (xwcstoutf(template, wtemplate, strlen(template) + 1) < 0)
666 return NULL;
667 return template;
668 }
669
670 int mkstemp(char *template)
671 {
672 char *filename = mktemp(template);
673 if (filename == NULL)
674 return -1;
675 return open(filename, O_RDWR | O_CREAT, 0600);
676 }
677
678 int gettimeofday(struct timeval *tv, void *tz)
679 {
680 FILETIME ft;
681 long long hnsec;
682
683 GetSystemTimeAsFileTime(&ft);
684 hnsec = filetime_to_hnsec(&ft);
685 tv->tv_sec = hnsec / 10000000;
686 tv->tv_usec = (hnsec % 10000000) / 10;
687 return 0;
688 }
689
690 int pipe(int filedes[2])
691 {
692 HANDLE h[2];
693
694 /* this creates non-inheritable handles */
695 if (!CreatePipe(&h[0], &h[1], NULL, 8192)) {
696 errno = err_win_to_posix(GetLastError());
697 return -1;
698 }
699 filedes[0] = _open_osfhandle((int)h[0], O_NOINHERIT);
700 if (filedes[0] < 0) {
701 CloseHandle(h[0]);
702 CloseHandle(h[1]);
703 return -1;
704 }
705 filedes[1] = _open_osfhandle((int)h[1], O_NOINHERIT);
706 if (filedes[0] < 0) {
707 close(filedes[0]);
708 CloseHandle(h[1]);
709 return -1;
710 }
711 return 0;
712 }
713
714 struct tm *gmtime_r(const time_t *timep, struct tm *result)
715 {
716 /* gmtime() in MSVCRT.DLL is thread-safe, but not reentrant */
717 memcpy(result, gmtime(timep), sizeof(struct tm));
718 return result;
719 }
720
721 struct tm *localtime_r(const time_t *timep, struct tm *result)
722 {
723 /* localtime() in MSVCRT.DLL is thread-safe, but not reentrant */
724 memcpy(result, localtime(timep), sizeof(struct tm));
725 return result;
726 }
727
728 char *mingw_getcwd(char *pointer, int len)
729 {
730 int i;
731 wchar_t wpointer[MAX_PATH];
732 if (!_wgetcwd(wpointer, ARRAY_SIZE(wpointer)))
733 return NULL;
734 if (xwcstoutf(pointer, wpointer, len) < 0)
735 return NULL;
736 for (i = 0; pointer[i]; i++)
737 if (pointer[i] == '\\')
738 pointer[i] = '/';
739 return pointer;
740 }
741
742 /*
743 * Compare environment entries by key (i.e. stopping at '=' or '\0').
744 */
745 static int compareenv(const void *v1, const void *v2)
746 {
747 const char *e1 = *(const char**)v1;
748 const char *e2 = *(const char**)v2;
749
750 for (;;) {
751 int c1 = *e1++;
752 int c2 = *e2++;
753 c1 = (c1 == '=') ? 0 : tolower(c1);
754 c2 = (c2 == '=') ? 0 : tolower(c2);
755 if (c1 > c2)
756 return 1;
757 if (c1 < c2)
758 return -1;
759 if (c1 == 0)
760 return 0;
761 }
762 }
763
764 static int bsearchenv(char **env, const char *name, size_t size)
765 {
766 unsigned low = 0, high = size;
767 while (low < high) {
768 unsigned mid = low + ((high - low) >> 1);
769 int cmp = compareenv(&env[mid], &name);
770 if (cmp < 0)
771 low = mid + 1;
772 else if (cmp > 0)
773 high = mid;
774 else
775 return mid;
776 }
777 return ~low; /* not found, return 1's complement of insert position */
778 }
779
780 /*
781 * If name contains '=', then sets the variable, otherwise it unsets it
782 * Size includes the terminating NULL. Env must have room for size + 1 entries
783 * (in case of insert). Returns the new size. Optionally frees removed entries.
784 */
785 static int do_putenv(char **env, const char *name, int size, int free_old)
786 {
787 int i = bsearchenv(env, name, size - 1);
788
789 /* optionally free removed / replaced entry */
790 if (i >= 0 && free_old)
791 free(env[i]);
792
793 if (strchr(name, '=')) {
794 /* if new value ('key=value') is specified, insert or replace entry */
795 if (i < 0) {
796 i = ~i;
797 memmove(&env[i + 1], &env[i], (size - i) * sizeof(char*));
798 size++;
799 }
800 env[i] = (char*) name;
801 } else if (i >= 0) {
802 /* otherwise ('key') remove existing entry */
803 size--;
804 memmove(&env[i], &env[i + 1], (size - i) * sizeof(char*));
805 }
806 return size;
807 }
808
809 /* used number of elements of environ array, including terminating NULL */
810 static int environ_size = 0;
811 /* allocated size of environ array, in bytes */
812 static int environ_alloc = 0;
813
814 char *mingw_getenv(const char *name)
815 {
816 char *value;
817 int pos = bsearchenv(environ, name, environ_size - 1);
818 if (pos < 0)
819 return NULL;
820 value = strchr(environ[pos], '=');
821 return value ? &value[1] : NULL;
822 }
823
824 int mingw_putenv(const char *namevalue)
825 {
826 ALLOC_GROW(environ, (environ_size + 1) * sizeof(char*), environ_alloc);
827 environ_size = do_putenv(environ, namevalue, environ_size, 1);
828 return 0;
829 }
830
831 /*
832 * See http://msdn2.microsoft.com/en-us/library/17w5ykft(vs.71).aspx
833 * (Parsing C++ Command-Line Arguments)
834 */
835 static const char *quote_arg(const char *arg)
836 {
837 /* count chars to quote */
838 int len = 0, n = 0;
839 int force_quotes = 0;
840 char *q, *d;
841 const char *p = arg;
842 if (!*p) force_quotes = 1;
843 while (*p) {
844 if (isspace(*p) || *p == '*' || *p == '?' || *p == '{' || *p == '\'')
845 force_quotes = 1;
846 else if (*p == '"')
847 n++;
848 else if (*p == '\\') {
849 int count = 0;
850 while (*p == '\\') {
851 count++;
852 p++;
853 len++;
854 }
855 if (*p == '"')
856 n += count*2 + 1;
857 continue;
858 }
859 len++;
860 p++;
861 }
862 if (!force_quotes && n == 0)
863 return arg;
864
865 /* insert \ where necessary */
866 d = q = xmalloc(len+n+3);
867 *d++ = '"';
868 while (*arg) {
869 if (*arg == '"')
870 *d++ = '\\';
871 else if (*arg == '\\') {
872 int count = 0;
873 while (*arg == '\\') {
874 count++;
875 *d++ = *arg++;
876 }
877 if (*arg == '"') {
878 while (count-- > 0)
879 *d++ = '\\';
880 *d++ = '\\';
881 }
882 }
883 *d++ = *arg++;
884 }
885 *d++ = '"';
886 *d++ = 0;
887 return q;
888 }
889
890 static const char *parse_interpreter(const char *cmd)
891 {
892 static char buf[100];
893 char *p, *opt;
894 int n, fd;
895
896 /* don't even try a .exe */
897 n = strlen(cmd);
898 if (n >= 4 && !strcasecmp(cmd+n-4, ".exe"))
899 return NULL;
900
901 fd = open(cmd, O_RDONLY);
902 if (fd < 0)
903 return NULL;
904 n = read(fd, buf, sizeof(buf)-1);
905 close(fd);
906 if (n < 4) /* at least '#!/x' and not error */
907 return NULL;
908
909 if (buf[0] != '#' || buf[1] != '!')
910 return NULL;
911 buf[n] = '\0';
912 p = buf + strcspn(buf, "\r\n");
913 if (!*p)
914 return NULL;
915
916 *p = '\0';
917 if (!(p = strrchr(buf+2, '/')) && !(p = strrchr(buf+2, '\\')))
918 return NULL;
919 /* strip options */
920 if ((opt = strchr(p+1, ' ')))
921 *opt = '\0';
922 return p+1;
923 }
924
925 /*
926 * Splits the PATH into parts.
927 */
928 static char **get_path_split(void)
929 {
930 char *p, **path, *envpath = getenv("PATH");
931 int i, n = 0;
932
933 if (!envpath || !*envpath)
934 return NULL;
935
936 envpath = xstrdup(envpath);
937 p = envpath;
938 while (p) {
939 char *dir = p;
940 p = strchr(p, ';');
941 if (p) *p++ = '\0';
942 if (*dir) { /* not earlier, catches series of ; */
943 ++n;
944 }
945 }
946 if (!n)
947 return NULL;
948
949 path = xmalloc((n+1)*sizeof(char *));
950 p = envpath;
951 i = 0;
952 do {
953 if (*p)
954 path[i++] = xstrdup(p);
955 p = p+strlen(p)+1;
956 } while (i < n);
957 path[i] = NULL;
958
959 free(envpath);
960
961 return path;
962 }
963
964 static void free_path_split(char **path)
965 {
966 char **p = path;
967
968 if (!path)
969 return;
970
971 while (*p)
972 free(*p++);
973 free(path);
974 }
975
976 /*
977 * exe_only means that we only want to detect .exe files, but not scripts
978 * (which do not have an extension)
979 */
980 static char *lookup_prog(const char *dir, const char *cmd, int isexe, int exe_only)
981 {
982 char path[MAX_PATH];
983 wchar_t wpath[MAX_PATH];
984 snprintf(path, sizeof(path), "%s\\%s.exe", dir, cmd);
985
986 if (xutftowcs_path(wpath, path) < 0)
987 return NULL;
988
989 if (!isexe && _waccess(wpath, F_OK) == 0)
990 return xstrdup(path);
991 wpath[wcslen(wpath)-4] = '\0';
992 if ((!exe_only || isexe) && _waccess(wpath, F_OK) == 0) {
993 if (!(GetFileAttributesW(wpath) & FILE_ATTRIBUTE_DIRECTORY)) {
994 path[strlen(path)-4] = '\0';
995 return xstrdup(path);
996 }
997 }
998 return NULL;
999 }
1000
1001 /*
1002 * Determines the absolute path of cmd using the split path in path.
1003 * If cmd contains a slash or backslash, no lookup is performed.
1004 */
1005 static char *path_lookup(const char *cmd, char **path, int exe_only)
1006 {
1007 char *prog = NULL;
1008 int len = strlen(cmd);
1009 int isexe = len >= 4 && !strcasecmp(cmd+len-4, ".exe");
1010
1011 if (strchr(cmd, '/') || strchr(cmd, '\\'))
1012 prog = xstrdup(cmd);
1013
1014 while (!prog && *path)
1015 prog = lookup_prog(*path++, cmd, isexe, exe_only);
1016
1017 return prog;
1018 }
1019
1020 /*
1021 * Create environment block suitable for CreateProcess. Merges current
1022 * process environment and the supplied environment changes.
1023 */
1024 static wchar_t *make_environment_block(char **deltaenv)
1025 {
1026 wchar_t *wenvblk = NULL;
1027 char **tmpenv;
1028 int i = 0, size = environ_size, wenvsz = 0, wenvpos = 0;
1029
1030 while (deltaenv && deltaenv[i])
1031 i++;
1032
1033 /* copy the environment, leaving space for changes */
1034 tmpenv = xmalloc((size + i) * sizeof(char*));
1035 memcpy(tmpenv, environ, size * sizeof(char*));
1036
1037 /* merge supplied environment changes into the temporary environment */
1038 for (i = 0; deltaenv && deltaenv[i]; i++)
1039 size = do_putenv(tmpenv, deltaenv[i], size, 0);
1040
1041 /* create environment block from temporary environment */
1042 for (i = 0; tmpenv[i]; i++) {
1043 size = 2 * strlen(tmpenv[i]) + 2; /* +2 for final \0 */
1044 ALLOC_GROW(wenvblk, (wenvpos + size) * sizeof(wchar_t), wenvsz);
1045 wenvpos += xutftowcs(&wenvblk[wenvpos], tmpenv[i], size) + 1;
1046 }
1047 /* add final \0 terminator */
1048 wenvblk[wenvpos] = 0;
1049 free(tmpenv);
1050 return wenvblk;
1051 }
1052
1053 struct pinfo_t {
1054 struct pinfo_t *next;
1055 pid_t pid;
1056 HANDLE proc;
1057 } pinfo_t;
1058 struct pinfo_t *pinfo = NULL;
1059 CRITICAL_SECTION pinfo_cs;
1060
1061 static pid_t mingw_spawnve_fd(const char *cmd, const char **argv, char **deltaenv,
1062 const char *dir,
1063 int prepend_cmd, int fhin, int fhout, int fherr)
1064 {
1065 STARTUPINFOW si;
1066 PROCESS_INFORMATION pi;
1067 struct strbuf args;
1068 wchar_t wcmd[MAX_PATH], wdir[MAX_PATH], *wargs, *wenvblk = NULL;
1069 unsigned flags = CREATE_UNICODE_ENVIRONMENT;
1070 BOOL ret;
1071
1072 /* Determine whether or not we are associated to a console */
1073 HANDLE cons = CreateFile("CONOUT$", GENERIC_WRITE,
1074 FILE_SHARE_WRITE, NULL, OPEN_EXISTING,
1075 FILE_ATTRIBUTE_NORMAL, NULL);
1076 if (cons == INVALID_HANDLE_VALUE) {
1077 /* There is no console associated with this process.
1078 * Since the child is a console process, Windows
1079 * would normally create a console window. But
1080 * since we'll be redirecting std streams, we do
1081 * not need the console.
1082 * It is necessary to use DETACHED_PROCESS
1083 * instead of CREATE_NO_WINDOW to make ssh
1084 * recognize that it has no console.
1085 */
1086 flags |= DETACHED_PROCESS;
1087 } else {
1088 /* There is already a console. If we specified
1089 * DETACHED_PROCESS here, too, Windows would
1090 * disassociate the child from the console.
1091 * The same is true for CREATE_NO_WINDOW.
1092 * Go figure!
1093 */
1094 CloseHandle(cons);
1095 }
1096 memset(&si, 0, sizeof(si));
1097 si.cb = sizeof(si);
1098 si.dwFlags = STARTF_USESTDHANDLES;
1099 si.hStdInput = winansi_get_osfhandle(fhin);
1100 si.hStdOutput = winansi_get_osfhandle(fhout);
1101 si.hStdError = winansi_get_osfhandle(fherr);
1102
1103 if (xutftowcs_path(wcmd, cmd) < 0)
1104 return -1;
1105 if (dir && xutftowcs_path(wdir, dir) < 0)
1106 return -1;
1107
1108 /* concatenate argv, quoting args as we go */
1109 strbuf_init(&args, 0);
1110 if (prepend_cmd) {
1111 char *quoted = (char *)quote_arg(cmd);
1112 strbuf_addstr(&args, quoted);
1113 if (quoted != cmd)
1114 free(quoted);
1115 }
1116 for (; *argv; argv++) {
1117 char *quoted = (char *)quote_arg(*argv);
1118 if (*args.buf)
1119 strbuf_addch(&args, ' ');
1120 strbuf_addstr(&args, quoted);
1121 if (quoted != *argv)
1122 free(quoted);
1123 }
1124
1125 wargs = xmalloc((2 * args.len + 1) * sizeof(wchar_t));
1126 xutftowcs(wargs, args.buf, 2 * args.len + 1);
1127 strbuf_release(&args);
1128
1129 wenvblk = make_environment_block(deltaenv);
1130
1131 memset(&pi, 0, sizeof(pi));
1132 ret = CreateProcessW(wcmd, wargs, NULL, NULL, TRUE, flags,
1133 wenvblk, dir ? wdir : NULL, &si, &pi);
1134
1135 free(wenvblk);
1136 free(wargs);
1137
1138 if (!ret) {
1139 errno = ENOENT;
1140 return -1;
1141 }
1142 CloseHandle(pi.hThread);
1143
1144 /*
1145 * The process ID is the human-readable identifier of the process
1146 * that we want to present in log and error messages. The handle
1147 * is not useful for this purpose. But we cannot close it, either,
1148 * because it is not possible to turn a process ID into a process
1149 * handle after the process terminated.
1150 * Keep the handle in a list for waitpid.
1151 */
1152 EnterCriticalSection(&pinfo_cs);
1153 {
1154 struct pinfo_t *info = xmalloc(sizeof(struct pinfo_t));
1155 info->pid = pi.dwProcessId;
1156 info->proc = pi.hProcess;
1157 info->next = pinfo;
1158 pinfo = info;
1159 }
1160 LeaveCriticalSection(&pinfo_cs);
1161
1162 return (pid_t)pi.dwProcessId;
1163 }
1164
1165 static pid_t mingw_spawnv(const char *cmd, const char **argv, int prepend_cmd)
1166 {
1167 return mingw_spawnve_fd(cmd, argv, NULL, NULL, prepend_cmd, 0, 1, 2);
1168 }
1169
1170 pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **deltaenv,
1171 const char *dir,
1172 int fhin, int fhout, int fherr)
1173 {
1174 pid_t pid;
1175 char **path = get_path_split();
1176 char *prog = path_lookup(cmd, path, 0);
1177
1178 if (!prog) {
1179 errno = ENOENT;
1180 pid = -1;
1181 }
1182 else {
1183 const char *interpr = parse_interpreter(prog);
1184
1185 if (interpr) {
1186 const char *argv0 = argv[0];
1187 char *iprog = path_lookup(interpr, path, 1);
1188 argv[0] = prog;
1189 if (!iprog) {
1190 errno = ENOENT;
1191 pid = -1;
1192 }
1193 else {
1194 pid = mingw_spawnve_fd(iprog, argv, deltaenv, dir, 1,
1195 fhin, fhout, fherr);
1196 free(iprog);
1197 }
1198 argv[0] = argv0;
1199 }
1200 else
1201 pid = mingw_spawnve_fd(prog, argv, deltaenv, dir, 0,
1202 fhin, fhout, fherr);
1203 free(prog);
1204 }
1205 free_path_split(path);
1206 return pid;
1207 }
1208
1209 static int try_shell_exec(const char *cmd, char *const *argv)
1210 {
1211 const char *interpr = parse_interpreter(cmd);
1212 char **path;
1213 char *prog;
1214 int pid = 0;
1215
1216 if (!interpr)
1217 return 0;
1218 path = get_path_split();
1219 prog = path_lookup(interpr, path, 1);
1220 if (prog) {
1221 int argc = 0;
1222 const char **argv2;
1223 while (argv[argc]) argc++;
1224 argv2 = xmalloc(sizeof(*argv) * (argc+1));
1225 argv2[0] = (char *)cmd; /* full path to the script file */
1226 memcpy(&argv2[1], &argv[1], sizeof(*argv) * argc);
1227 pid = mingw_spawnv(prog, argv2, 1);
1228 if (pid >= 0) {
1229 int status;
1230 if (waitpid(pid, &status, 0) < 0)
1231 status = 255;
1232 exit(status);
1233 }
1234 pid = 1; /* indicate that we tried but failed */
1235 free(prog);
1236 free(argv2);
1237 }
1238 free_path_split(path);
1239 return pid;
1240 }
1241
1242 int mingw_execv(const char *cmd, char *const *argv)
1243 {
1244 /* check if git_command is a shell script */
1245 if (!try_shell_exec(cmd, argv)) {
1246 int pid, status;
1247
1248 pid = mingw_spawnv(cmd, (const char **)argv, 0);
1249 if (pid < 0)
1250 return -1;
1251 if (waitpid(pid, &status, 0) < 0)
1252 status = 255;
1253 exit(status);
1254 }
1255 return -1;
1256 }
1257
1258 int mingw_execvp(const char *cmd, char *const *argv)
1259 {
1260 char **path = get_path_split();
1261 char *prog = path_lookup(cmd, path, 0);
1262
1263 if (prog) {
1264 mingw_execv(prog, argv);
1265 free(prog);
1266 } else
1267 errno = ENOENT;
1268
1269 free_path_split(path);
1270 return -1;
1271 }
1272
1273 int mingw_kill(pid_t pid, int sig)
1274 {
1275 if (pid > 0 && sig == SIGTERM) {
1276 HANDLE h = OpenProcess(PROCESS_TERMINATE, FALSE, pid);
1277
1278 if (TerminateProcess(h, -1)) {
1279 CloseHandle(h);
1280 return 0;
1281 }
1282
1283 errno = err_win_to_posix(GetLastError());
1284 CloseHandle(h);
1285 return -1;
1286 }
1287
1288 errno = EINVAL;
1289 return -1;
1290 }
1291
1292 /*
1293 * Note, this isn't a complete replacement for getaddrinfo. It assumes
1294 * that service contains a numerical port, or that it is null. It
1295 * does a simple search using gethostbyname, and returns one IPv4 host
1296 * if one was found.
1297 */
1298 static int WSAAPI getaddrinfo_stub(const char *node, const char *service,
1299 const struct addrinfo *hints,
1300 struct addrinfo **res)
1301 {
1302 struct hostent *h = NULL;
1303 struct addrinfo *ai;
1304 struct sockaddr_in *sin;
1305
1306 if (node) {
1307 h = gethostbyname(node);
1308 if (!h)
1309 return WSAGetLastError();
1310 }
1311
1312 ai = xmalloc(sizeof(struct addrinfo));
1313 *res = ai;
1314 ai->ai_flags = 0;
1315 ai->ai_family = AF_INET;
1316 ai->ai_socktype = hints ? hints->ai_socktype : 0;
1317 switch (ai->ai_socktype) {
1318 case SOCK_STREAM:
1319 ai->ai_protocol = IPPROTO_TCP;
1320 break;
1321 case SOCK_DGRAM:
1322 ai->ai_protocol = IPPROTO_UDP;
1323 break;
1324 default:
1325 ai->ai_protocol = 0;
1326 break;
1327 }
1328 ai->ai_addrlen = sizeof(struct sockaddr_in);
1329 if (hints && (hints->ai_flags & AI_CANONNAME))
1330 ai->ai_canonname = h ? xstrdup(h->h_name) : NULL;
1331 else
1332 ai->ai_canonname = NULL;
1333
1334 sin = xmalloc(ai->ai_addrlen);
1335 memset(sin, 0, ai->ai_addrlen);
1336 sin->sin_family = AF_INET;
1337 /* Note: getaddrinfo is supposed to allow service to be a string,
1338 * which should be looked up using getservbyname. This is
1339 * currently not implemented */
1340 if (service)
1341 sin->sin_port = htons(atoi(service));
1342 if (h)
1343 sin->sin_addr = *(struct in_addr *)h->h_addr;
1344 else if (hints && (hints->ai_flags & AI_PASSIVE))
1345 sin->sin_addr.s_addr = INADDR_ANY;
1346 else
1347 sin->sin_addr.s_addr = INADDR_LOOPBACK;
1348 ai->ai_addr = (struct sockaddr *)sin;
1349 ai->ai_next = 0;
1350 return 0;
1351 }
1352
1353 static void WSAAPI freeaddrinfo_stub(struct addrinfo *res)
1354 {
1355 free(res->ai_canonname);
1356 free(res->ai_addr);
1357 free(res);
1358 }
1359
1360 static int WSAAPI getnameinfo_stub(const struct sockaddr *sa, socklen_t salen,
1361 char *host, DWORD hostlen,
1362 char *serv, DWORD servlen, int flags)
1363 {
1364 const struct sockaddr_in *sin = (const struct sockaddr_in *)sa;
1365 if (sa->sa_family != AF_INET)
1366 return EAI_FAMILY;
1367 if (!host && !serv)
1368 return EAI_NONAME;
1369
1370 if (host && hostlen > 0) {
1371 struct hostent *ent = NULL;
1372 if (!(flags & NI_NUMERICHOST))
1373 ent = gethostbyaddr((const char *)&sin->sin_addr,
1374 sizeof(sin->sin_addr), AF_INET);
1375
1376 if (ent)
1377 snprintf(host, hostlen, "%s", ent->h_name);
1378 else if (flags & NI_NAMEREQD)
1379 return EAI_NONAME;
1380 else
1381 snprintf(host, hostlen, "%s", inet_ntoa(sin->sin_addr));
1382 }
1383
1384 if (serv && servlen > 0) {
1385 struct servent *ent = NULL;
1386 if (!(flags & NI_NUMERICSERV))
1387 ent = getservbyport(sin->sin_port,
1388 flags & NI_DGRAM ? "udp" : "tcp");
1389
1390 if (ent)
1391 snprintf(serv, servlen, "%s", ent->s_name);
1392 else
1393 snprintf(serv, servlen, "%d", ntohs(sin->sin_port));
1394 }
1395
1396 return 0;
1397 }
1398
1399 static HMODULE ipv6_dll = NULL;
1400 static void (WSAAPI *ipv6_freeaddrinfo)(struct addrinfo *res);
1401 static int (WSAAPI *ipv6_getaddrinfo)(const char *node, const char *service,
1402 const struct addrinfo *hints,
1403 struct addrinfo **res);
1404 static int (WSAAPI *ipv6_getnameinfo)(const struct sockaddr *sa, socklen_t salen,
1405 char *host, DWORD hostlen,
1406 char *serv, DWORD servlen, int flags);
1407 /*
1408 * gai_strerror is an inline function in the ws2tcpip.h header, so we
1409 * don't need to try to load that one dynamically.
1410 */
1411
1412 static void socket_cleanup(void)
1413 {
1414 WSACleanup();
1415 if (ipv6_dll)
1416 FreeLibrary(ipv6_dll);
1417 ipv6_dll = NULL;
1418 ipv6_freeaddrinfo = freeaddrinfo_stub;
1419 ipv6_getaddrinfo = getaddrinfo_stub;
1420 ipv6_getnameinfo = getnameinfo_stub;
1421 }
1422
1423 static void ensure_socket_initialization(void)
1424 {
1425 WSADATA wsa;
1426 static int initialized = 0;
1427 const char *libraries[] = { "ws2_32.dll", "wship6.dll", NULL };
1428 const char **name;
1429
1430 if (initialized)
1431 return;
1432
1433 if (WSAStartup(MAKEWORD(2,2), &wsa))
1434 die("unable to initialize winsock subsystem, error %d",
1435 WSAGetLastError());
1436
1437 for (name = libraries; *name; name++) {
1438 ipv6_dll = LoadLibrary(*name);
1439 if (!ipv6_dll)
1440 continue;
1441
1442 ipv6_freeaddrinfo = (void (WSAAPI *)(struct addrinfo *))
1443 GetProcAddress(ipv6_dll, "freeaddrinfo");
1444 ipv6_getaddrinfo = (int (WSAAPI *)(const char *, const char *,
1445 const struct addrinfo *,
1446 struct addrinfo **))
1447 GetProcAddress(ipv6_dll, "getaddrinfo");
1448 ipv6_getnameinfo = (int (WSAAPI *)(const struct sockaddr *,
1449 socklen_t, char *, DWORD,
1450 char *, DWORD, int))
1451 GetProcAddress(ipv6_dll, "getnameinfo");
1452 if (!ipv6_freeaddrinfo || !ipv6_getaddrinfo || !ipv6_getnameinfo) {
1453 FreeLibrary(ipv6_dll);
1454 ipv6_dll = NULL;
1455 } else
1456 break;
1457 }
1458 if (!ipv6_freeaddrinfo || !ipv6_getaddrinfo || !ipv6_getnameinfo) {
1459 ipv6_freeaddrinfo = freeaddrinfo_stub;
1460 ipv6_getaddrinfo = getaddrinfo_stub;
1461 ipv6_getnameinfo = getnameinfo_stub;
1462 }
1463
1464 atexit(socket_cleanup);
1465 initialized = 1;
1466 }
1467
1468 #undef gethostname
1469 int mingw_gethostname(char *name, int namelen)
1470 {
1471 ensure_socket_initialization();
1472 return gethostname(name, namelen);
1473 }
1474
1475 #undef gethostbyname
1476 struct hostent *mingw_gethostbyname(const char *host)
1477 {
1478 ensure_socket_initialization();
1479 return gethostbyname(host);
1480 }
1481
1482 void mingw_freeaddrinfo(struct addrinfo *res)
1483 {
1484 ipv6_freeaddrinfo(res);
1485 }
1486
1487 int mingw_getaddrinfo(const char *node, const char *service,
1488 const struct addrinfo *hints, struct addrinfo **res)
1489 {
1490 ensure_socket_initialization();
1491 return ipv6_getaddrinfo(node, service, hints, res);
1492 }
1493
1494 int mingw_getnameinfo(const struct sockaddr *sa, socklen_t salen,
1495 char *host, DWORD hostlen, char *serv, DWORD servlen,
1496 int flags)
1497 {
1498 ensure_socket_initialization();
1499 return ipv6_getnameinfo(sa, salen, host, hostlen, serv, servlen, flags);
1500 }
1501
1502 int mingw_socket(int domain, int type, int protocol)
1503 {
1504 int sockfd;
1505 SOCKET s;
1506
1507 ensure_socket_initialization();
1508 s = WSASocket(domain, type, protocol, NULL, 0, 0);
1509 if (s == INVALID_SOCKET) {
1510 /*
1511 * WSAGetLastError() values are regular BSD error codes
1512 * biased by WSABASEERR.
1513 * However, strerror() does not know about networking
1514 * specific errors, which are values beginning at 38 or so.
1515 * Therefore, we choose to leave the biased error code
1516 * in errno so that _if_ someone looks up the code somewhere,
1517 * then it is at least the number that are usually listed.
1518 */
1519 errno = WSAGetLastError();
1520 return -1;
1521 }
1522 /* convert into a file descriptor */
1523 if ((sockfd = _open_osfhandle(s, O_RDWR|O_BINARY)) < 0) {
1524 closesocket(s);
1525 return error("unable to make a socket file descriptor: %s",
1526 strerror(errno));
1527 }
1528 return sockfd;
1529 }
1530
1531 #undef connect
1532 int mingw_connect(int sockfd, struct sockaddr *sa, size_t sz)
1533 {
1534 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
1535 return connect(s, sa, sz);
1536 }
1537
1538 #undef bind
1539 int mingw_bind(int sockfd, struct sockaddr *sa, size_t sz)
1540 {
1541 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
1542 return bind(s, sa, sz);
1543 }
1544
1545 #undef setsockopt
1546 int mingw_setsockopt(int sockfd, int lvl, int optname, void *optval, int optlen)
1547 {
1548 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
1549 return setsockopt(s, lvl, optname, (const char*)optval, optlen);
1550 }
1551
1552 #undef shutdown
1553 int mingw_shutdown(int sockfd, int how)
1554 {
1555 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
1556 return shutdown(s, how);
1557 }
1558
1559 #undef listen
1560 int mingw_listen(int sockfd, int backlog)
1561 {
1562 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
1563 return listen(s, backlog);
1564 }
1565
1566 #undef accept
1567 int mingw_accept(int sockfd1, struct sockaddr *sa, socklen_t *sz)
1568 {
1569 int sockfd2;
1570
1571 SOCKET s1 = (SOCKET)_get_osfhandle(sockfd1);
1572 SOCKET s2 = accept(s1, sa, sz);
1573
1574 /* convert into a file descriptor */
1575 if ((sockfd2 = _open_osfhandle(s2, O_RDWR|O_BINARY)) < 0) {
1576 int err = errno;
1577 closesocket(s2);
1578 return error("unable to make a socket file descriptor: %s",
1579 strerror(err));
1580 }
1581 return sockfd2;
1582 }
1583
1584 #undef rename
1585 int mingw_rename(const char *pold, const char *pnew)
1586 {
1587 DWORD attrs, gle;
1588 int tries = 0;
1589 wchar_t wpold[MAX_PATH], wpnew[MAX_PATH];
1590 if (xutftowcs_path(wpold, pold) < 0 || xutftowcs_path(wpnew, pnew) < 0)
1591 return -1;
1592
1593 /*
1594 * Try native rename() first to get errno right.
1595 * It is based on MoveFile(), which cannot overwrite existing files.
1596 */
1597 if (!_wrename(wpold, wpnew))
1598 return 0;
1599 if (errno != EEXIST)
1600 return -1;
1601 repeat:
1602 if (MoveFileExW(wpold, wpnew, MOVEFILE_REPLACE_EXISTING))
1603 return 0;
1604 /* TODO: translate more errors */
1605 gle = GetLastError();
1606 if (gle == ERROR_ACCESS_DENIED &&
1607 (attrs = GetFileAttributesW(wpnew)) != INVALID_FILE_ATTRIBUTES) {
1608 if (attrs & FILE_ATTRIBUTE_DIRECTORY) {
1609 errno = EISDIR;
1610 return -1;
1611 }
1612 if ((attrs & FILE_ATTRIBUTE_READONLY) &&
1613 SetFileAttributesW(wpnew, attrs & ~FILE_ATTRIBUTE_READONLY)) {
1614 if (MoveFileExW(wpold, wpnew, MOVEFILE_REPLACE_EXISTING))
1615 return 0;
1616 gle = GetLastError();
1617 /* revert file attributes on failure */
1618 SetFileAttributesW(wpnew, attrs);
1619 }
1620 }
1621 if (tries < ARRAY_SIZE(delay) && gle == ERROR_ACCESS_DENIED) {
1622 /*
1623 * We assume that some other process had the source or
1624 * destination file open at the wrong moment and retry.
1625 * In order to give the other process a higher chance to
1626 * complete its operation, we give up our time slice now.
1627 * If we have to retry again, we do sleep a bit.
1628 */
1629 Sleep(delay[tries]);
1630 tries++;
1631 goto repeat;
1632 }
1633 if (gle == ERROR_ACCESS_DENIED &&
1634 ask_yes_no_if_possible("Rename from '%s' to '%s' failed. "
1635 "Should I try again?", pold, pnew))
1636 goto repeat;
1637
1638 errno = EACCES;
1639 return -1;
1640 }
1641
1642 /*
1643 * Note that this doesn't return the actual pagesize, but
1644 * the allocation granularity. If future Windows specific git code
1645 * needs the real getpagesize function, we need to find another solution.
1646 */
1647 int mingw_getpagesize(void)
1648 {
1649 SYSTEM_INFO si;
1650 GetSystemInfo(&si);
1651 return si.dwAllocationGranularity;
1652 }
1653
1654 struct passwd *getpwuid(int uid)
1655 {
1656 static char user_name[100];
1657 static struct passwd p;
1658
1659 DWORD len = sizeof(user_name);
1660 if (!GetUserName(user_name, &len))
1661 return NULL;
1662 p.pw_name = user_name;
1663 p.pw_gecos = "unknown";
1664 p.pw_dir = NULL;
1665 return &p;
1666 }
1667
1668 static HANDLE timer_event;
1669 static HANDLE timer_thread;
1670 static int timer_interval;
1671 static int one_shot;
1672 static sig_handler_t timer_fn = SIG_DFL;
1673
1674 /* The timer works like this:
1675 * The thread, ticktack(), is a trivial routine that most of the time
1676 * only waits to receive the signal to terminate. The main thread tells
1677 * the thread to terminate by setting the timer_event to the signalled
1678 * state.
1679 * But ticktack() interrupts the wait state after the timer's interval
1680 * length to call the signal handler.
1681 */
1682
1683 static unsigned __stdcall ticktack(void *dummy)
1684 {
1685 while (WaitForSingleObject(timer_event, timer_interval) == WAIT_TIMEOUT) {
1686 if (timer_fn == SIG_DFL)
1687 die("Alarm");
1688 if (timer_fn != SIG_IGN)
1689 timer_fn(SIGALRM);
1690 if (one_shot)
1691 break;
1692 }
1693 return 0;
1694 }
1695
1696 static int start_timer_thread(void)
1697 {
1698 timer_event = CreateEvent(NULL, FALSE, FALSE, NULL);
1699 if (timer_event) {
1700 timer_thread = (HANDLE) _beginthreadex(NULL, 0, ticktack, NULL, 0, NULL);
1701 if (!timer_thread )
1702 return errno = ENOMEM,
1703 error("cannot start timer thread");
1704 } else
1705 return errno = ENOMEM,
1706 error("cannot allocate resources for timer");
1707 return 0;
1708 }
1709
1710 static void stop_timer_thread(void)
1711 {
1712 if (timer_event)
1713 SetEvent(timer_event); /* tell thread to terminate */
1714 if (timer_thread) {
1715 int rc = WaitForSingleObject(timer_thread, 1000);
1716 if (rc == WAIT_TIMEOUT)
1717 error("timer thread did not terminate timely");
1718 else if (rc != WAIT_OBJECT_0)
1719 error("waiting for timer thread failed: %lu",
1720 GetLastError());
1721 CloseHandle(timer_thread);
1722 }
1723 if (timer_event)
1724 CloseHandle(timer_event);
1725 timer_event = NULL;
1726 timer_thread = NULL;
1727 }
1728
1729 static inline int is_timeval_eq(const struct timeval *i1, const struct timeval *i2)
1730 {
1731 return i1->tv_sec == i2->tv_sec && i1->tv_usec == i2->tv_usec;
1732 }
1733
1734 int setitimer(int type, struct itimerval *in, struct itimerval *out)
1735 {
1736 static const struct timeval zero;
1737 static int atexit_done;
1738
1739 if (out != NULL)
1740 return errno = EINVAL,
1741 error("setitimer param 3 != NULL not implemented");
1742 if (!is_timeval_eq(&in->it_interval, &zero) &&
1743 !is_timeval_eq(&in->it_interval, &in->it_value))
1744 return errno = EINVAL,
1745 error("setitimer: it_interval must be zero or eq it_value");
1746
1747 if (timer_thread)
1748 stop_timer_thread();
1749
1750 if (is_timeval_eq(&in->it_value, &zero) &&
1751 is_timeval_eq(&in->it_interval, &zero))
1752 return 0;
1753
1754 timer_interval = in->it_value.tv_sec * 1000 + in->it_value.tv_usec / 1000;
1755 one_shot = is_timeval_eq(&in->it_interval, &zero);
1756 if (!atexit_done) {
1757 atexit(stop_timer_thread);
1758 atexit_done = 1;
1759 }
1760 return start_timer_thread();
1761 }
1762
1763 int sigaction(int sig, struct sigaction *in, struct sigaction *out)
1764 {
1765 if (sig != SIGALRM)
1766 return errno = EINVAL,
1767 error("sigaction only implemented for SIGALRM");
1768 if (out != NULL)
1769 return errno = EINVAL,
1770 error("sigaction: param 3 != NULL not implemented");
1771
1772 timer_fn = in->sa_handler;
1773 return 0;
1774 }
1775
1776 #undef signal
1777 sig_handler_t mingw_signal(int sig, sig_handler_t handler)
1778 {
1779 sig_handler_t old = timer_fn;
1780 if (sig != SIGALRM)
1781 return signal(sig, handler);
1782 timer_fn = handler;
1783 return old;
1784 }
1785
1786 static const char *make_backslash_path(const char *path)
1787 {
1788 static char buf[PATH_MAX + 1];
1789 char *c;
1790
1791 if (strlcpy(buf, path, PATH_MAX) >= PATH_MAX)
1792 die("Too long path: %.*s", 60, path);
1793
1794 for (c = buf; *c; c++) {
1795 if (*c == '/')
1796 *c = '\\';
1797 }
1798 return buf;
1799 }
1800
1801 void mingw_open_html(const char *unixpath)
1802 {
1803 const char *htmlpath = make_backslash_path(unixpath);
1804 typedef HINSTANCE (WINAPI *T)(HWND, const char *,
1805 const char *, const char *, const char *, INT);
1806 T ShellExecute;
1807 HMODULE shell32;
1808 int r;
1809
1810 shell32 = LoadLibrary("shell32.dll");
1811 if (!shell32)
1812 die("cannot load shell32.dll");
1813 ShellExecute = (T)GetProcAddress(shell32, "ShellExecuteA");
1814 if (!ShellExecute)
1815 die("cannot run browser");
1816
1817 printf("Launching default browser to display HTML ...\n");
1818 r = (int)ShellExecute(NULL, "open", htmlpath, NULL, "\\", SW_SHOWNORMAL);
1819 FreeLibrary(shell32);
1820 /* see the MSDN documentation referring to the result codes here */
1821 if (r <= 32) {
1822 die("failed to launch browser for %.*s", MAX_PATH, unixpath);
1823 }
1824 }
1825
1826 int link(const char *oldpath, const char *newpath)
1827 {
1828 typedef BOOL (WINAPI *T)(LPCWSTR, LPCWSTR, LPSECURITY_ATTRIBUTES);
1829 static T create_hard_link = NULL;
1830 wchar_t woldpath[MAX_PATH], wnewpath[MAX_PATH];
1831 if (xutftowcs_path(woldpath, oldpath) < 0 ||
1832 xutftowcs_path(wnewpath, newpath) < 0)
1833 return -1;
1834
1835 if (!create_hard_link) {
1836 create_hard_link = (T) GetProcAddress(
1837 GetModuleHandle("kernel32.dll"), "CreateHardLinkW");
1838 if (!create_hard_link)
1839 create_hard_link = (T)-1;
1840 }
1841 if (create_hard_link == (T)-1) {
1842 errno = ENOSYS;
1843 return -1;
1844 }
1845 if (!create_hard_link(wnewpath, woldpath, NULL)) {
1846 errno = err_win_to_posix(GetLastError());
1847 return -1;
1848 }
1849 return 0;
1850 }
1851
1852 pid_t waitpid(pid_t pid, int *status, int options)
1853 {
1854 HANDLE h = OpenProcess(SYNCHRONIZE | PROCESS_QUERY_INFORMATION,
1855 FALSE, pid);
1856 if (!h) {
1857 errno = ECHILD;
1858 return -1;
1859 }
1860
1861 if (pid > 0 && options & WNOHANG) {
1862 if (WAIT_OBJECT_0 != WaitForSingleObject(h, 0)) {
1863 CloseHandle(h);
1864 return 0;
1865 }
1866 options &= ~WNOHANG;
1867 }
1868
1869 if (options == 0) {
1870 struct pinfo_t **ppinfo;
1871 if (WaitForSingleObject(h, INFINITE) != WAIT_OBJECT_0) {
1872 CloseHandle(h);
1873 return 0;
1874 }
1875
1876 if (status)
1877 GetExitCodeProcess(h, (LPDWORD)status);
1878
1879 EnterCriticalSection(&pinfo_cs);
1880
1881 ppinfo = &pinfo;
1882 while (*ppinfo) {
1883 struct pinfo_t *info = *ppinfo;
1884 if (info->pid == pid) {
1885 CloseHandle(info->proc);
1886 *ppinfo = info->next;
1887 free(info);
1888 break;
1889 }
1890 ppinfo = &info->next;
1891 }
1892
1893 LeaveCriticalSection(&pinfo_cs);
1894
1895 CloseHandle(h);
1896 return pid;
1897 }
1898 CloseHandle(h);
1899
1900 errno = EINVAL;
1901 return -1;
1902 }
1903
1904 const char *get_windows_home_directory(void)
1905 {
1906 static const char *home_directory = NULL;
1907 struct strbuf buf = STRBUF_INIT;
1908
1909 if (home_directory)
1910 return home_directory;
1911
1912 home_directory = getenv("HOME");
1913 if (home_directory && *home_directory)
1914 return home_directory;
1915
1916 strbuf_addf(&buf, "%s/%s", getenv("HOMEDRIVE"), getenv("HOMEPATH"));
1917 home_directory = strbuf_detach(&buf, NULL);
1918
1919 return home_directory;
1920 }
1921
1922 int mingw_offset_1st_component(const char *path)
1923 {
1924 int offset = 0;
1925 if (has_dos_drive_prefix(path))
1926 offset = 2;
1927
1928 /* unc paths */
1929 else if (is_dir_sep(path[0]) && is_dir_sep(path[1])) {
1930
1931 /* skip server name */
1932 char *pos = strpbrk(path + 2, "\\/");
1933 if (!pos)
1934 return 0; /* Error: malformed unc path */
1935
1936 do {
1937 pos++;
1938 } while (*pos && !is_dir_sep(*pos));
1939
1940 offset = pos - path;
1941 }
1942
1943 return offset + is_dir_sep(path[offset]);
1944 }
1945
1946 int xutftowcsn(wchar_t *wcs, const char *utfs, size_t wcslen, int utflen)
1947 {
1948 int upos = 0, wpos = 0;
1949 const unsigned char *utf = (const unsigned char*) utfs;
1950 if (!utf || !wcs || wcslen < 1) {
1951 errno = EINVAL;
1952 return -1;
1953 }
1954 /* reserve space for \0 */
1955 wcslen--;
1956 if (utflen < 0)
1957 utflen = INT_MAX;
1958
1959 while (upos < utflen) {
1960 int c = utf[upos++] & 0xff;
1961 if (utflen == INT_MAX && c == 0)
1962 break;
1963
1964 if (wpos >= wcslen) {
1965 wcs[wpos] = 0;
1966 errno = ERANGE;
1967 return -1;
1968 }
1969
1970 if (c < 0x80) {
1971 /* ASCII */
1972 wcs[wpos++] = c;
1973 } else if (c >= 0xc2 && c < 0xe0 && upos < utflen &&
1974 (utf[upos] & 0xc0) == 0x80) {
1975 /* 2-byte utf-8 */
1976 c = ((c & 0x1f) << 6);
1977 c |= (utf[upos++] & 0x3f);
1978 wcs[wpos++] = c;
1979 } else if (c >= 0xe0 && c < 0xf0 && upos + 1 < utflen &&
1980 !(c == 0xe0 && utf[upos] < 0xa0) && /* over-long encoding */
1981 (utf[upos] & 0xc0) == 0x80 &&
1982 (utf[upos + 1] & 0xc0) == 0x80) {
1983 /* 3-byte utf-8 */
1984 c = ((c & 0x0f) << 12);
1985 c |= ((utf[upos++] & 0x3f) << 6);
1986 c |= (utf[upos++] & 0x3f);
1987 wcs[wpos++] = c;
1988 } else if (c >= 0xf0 && c < 0xf5 && upos + 2 < utflen &&
1989 wpos + 1 < wcslen &&
1990 !(c == 0xf0 && utf[upos] < 0x90) && /* over-long encoding */
1991 !(c == 0xf4 && utf[upos] >= 0x90) && /* > \u10ffff */
1992 (utf[upos] & 0xc0) == 0x80 &&
1993 (utf[upos + 1] & 0xc0) == 0x80 &&
1994 (utf[upos + 2] & 0xc0) == 0x80) {
1995 /* 4-byte utf-8: convert to \ud8xx \udcxx surrogate pair */
1996 c = ((c & 0x07) << 18);
1997 c |= ((utf[upos++] & 0x3f) << 12);
1998 c |= ((utf[upos++] & 0x3f) << 6);
1999 c |= (utf[upos++] & 0x3f);
2000 c -= 0x10000;
2001 wcs[wpos++] = 0xd800 | (c >> 10);
2002 wcs[wpos++] = 0xdc00 | (c & 0x3ff);
2003 } else if (c >= 0xa0) {
2004 /* invalid utf-8 byte, printable unicode char: convert 1:1 */
2005 wcs[wpos++] = c;
2006 } else {
2007 /* invalid utf-8 byte, non-printable unicode: convert to hex */
2008 static const char *hex = "0123456789abcdef";
2009 wcs[wpos++] = hex[c >> 4];
2010 if (wpos < wcslen)
2011 wcs[wpos++] = hex[c & 0x0f];
2012 }
2013 }
2014 wcs[wpos] = 0;
2015 return wpos;
2016 }
2017
2018 int xwcstoutf(char *utf, const wchar_t *wcs, size_t utflen)
2019 {
2020 if (!wcs || !utf || utflen < 1) {
2021 errno = EINVAL;
2022 return -1;
2023 }
2024 utflen = WideCharToMultiByte(CP_UTF8, 0, wcs, -1, utf, utflen, NULL, NULL);
2025 if (utflen)
2026 return utflen - 1;
2027 errno = ERANGE;
2028 return -1;
2029 }
2030
2031 /*
2032 * Disable MSVCRT command line wildcard expansion (__getmainargs called from
2033 * mingw startup code, see init.c in mingw runtime).
2034 */
2035 int _CRT_glob = 0;
2036
2037 typedef struct {
2038 int newmode;
2039 } _startupinfo;
2040
2041 extern int __wgetmainargs(int *argc, wchar_t ***argv, wchar_t ***env, int glob,
2042 _startupinfo *si);
2043
2044 static NORETURN void die_startup()
2045 {
2046 fputs("fatal: not enough memory for initialization", stderr);
2047 exit(128);
2048 }
2049
2050 static void *malloc_startup(size_t size)
2051 {
2052 void *result = malloc(size);
2053 if (!result)
2054 die_startup();
2055 return result;
2056 }
2057
2058 static char *wcstoutfdup_startup(char *buffer, const wchar_t *wcs, size_t len)
2059 {
2060 len = xwcstoutf(buffer, wcs, len) + 1;
2061 return memcpy(malloc_startup(len), buffer, len);
2062 }
2063
2064 void mingw_startup()
2065 {
2066 int i, maxlen, argc;
2067 char *buffer;
2068 wchar_t **wenv, **wargv;
2069 _startupinfo si;
2070
2071 /* get wide char arguments and environment */
2072 si.newmode = 0;
2073 if (__wgetmainargs(&argc, &wargv, &wenv, _CRT_glob, &si) < 0)
2074 die_startup();
2075
2076 /* determine size of argv and environ conversion buffer */
2077 maxlen = wcslen(_wpgmptr);
2078 for (i = 1; i < argc; i++)
2079 maxlen = max(maxlen, wcslen(wargv[i]));
2080 for (i = 0; wenv[i]; i++)
2081 maxlen = max(maxlen, wcslen(wenv[i]));
2082
2083 /*
2084 * nedmalloc can't free CRT memory, allocate resizable environment
2085 * list. Note that xmalloc / xmemdupz etc. call getenv, so we cannot
2086 * use it while initializing the environment itself.
2087 */
2088 environ_size = i + 1;
2089 environ_alloc = alloc_nr(environ_size * sizeof(char*));
2090 environ = malloc_startup(environ_alloc);
2091
2092 /* allocate buffer (wchar_t encodes to max 3 UTF-8 bytes) */
2093 maxlen = 3 * maxlen + 1;
2094 buffer = malloc_startup(maxlen);
2095
2096 /* convert command line arguments and environment to UTF-8 */
2097 __argv[0] = wcstoutfdup_startup(buffer, _wpgmptr, maxlen);
2098 for (i = 1; i < argc; i++)
2099 __argv[i] = wcstoutfdup_startup(buffer, wargv[i], maxlen);
2100 for (i = 0; wenv[i]; i++)
2101 environ[i] = wcstoutfdup_startup(buffer, wenv[i], maxlen);
2102 environ[i] = NULL;
2103 free(buffer);
2104
2105 /* sort environment for O(log n) getenv / putenv */
2106 qsort(environ, i, sizeof(char*), compareenv);
2107
2108 /* fix Windows specific environment settings */
2109
2110 /* on Windows it is TMP and TEMP */
2111 if (!getenv("TMPDIR")) {
2112 const char *tmp = getenv("TMP");
2113 if (!tmp)
2114 tmp = getenv("TEMP");
2115 if (tmp)
2116 setenv("TMPDIR", tmp, 1);
2117 }
2118
2119 /* simulate TERM to enable auto-color (see color.c) */
2120 if (!getenv("TERM"))
2121 setenv("TERM", "winansi", 1);
2122
2123 /* initialize critical section for waitpid pinfo_t list */
2124 InitializeCriticalSection(&pinfo_cs);
2125
2126 /* set up default file mode and file modes for stdin/out/err */
2127 _fmode = _O_BINARY;
2128 _setmode(_fileno(stdin), _O_BINARY);
2129 _setmode(_fileno(stdout), _O_BINARY);
2130 _setmode(_fileno(stderr), _O_BINARY);
2131
2132 /* initialize Unicode console */
2133 winansi_init();
2134 }
Dscho's miscellaneous git branches