a7e1c6b47148c042dd1eda87a6aa2b58c38a34e2
1#include "../git-compat-util.h"
2#include "win32.h"
3#include <conio.h>
4#include "../strbuf.h"
5int err_win_to_posix(DWORD winerr)
7{
8 int error = ENOSYS;
9 switch(winerr) {
10 case ERROR_ACCESS_DENIED: error = EACCES; break;
11 case ERROR_ACCOUNT_DISABLED: error = EACCES; break;
12 case ERROR_ACCOUNT_RESTRICTION: error = EACCES; break;
13 case ERROR_ALREADY_ASSIGNED: error = EBUSY; break;
14 case ERROR_ALREADY_EXISTS: error = EEXIST; break;
15 case ERROR_ARITHMETIC_OVERFLOW: error = ERANGE; break;
16 case ERROR_BAD_COMMAND: error = EIO; break;
17 case ERROR_BAD_DEVICE: error = ENODEV; break;
18 case ERROR_BAD_DRIVER_LEVEL: error = ENXIO; break;
19 case ERROR_BAD_EXE_FORMAT: error = ENOEXEC; break;
20 case ERROR_BAD_FORMAT: error = ENOEXEC; break;
21 case ERROR_BAD_LENGTH: error = EINVAL; break;
22 case ERROR_BAD_PATHNAME: error = ENOENT; break;
23 case ERROR_BAD_PIPE: error = EPIPE; break;
24 case ERROR_BAD_UNIT: error = ENODEV; break;
25 case ERROR_BAD_USERNAME: error = EINVAL; break;
26 case ERROR_BROKEN_PIPE: error = EPIPE; break;
27 case ERROR_BUFFER_OVERFLOW: error = ENAMETOOLONG; break;
28 case ERROR_BUSY: error = EBUSY; break;
29 case ERROR_BUSY_DRIVE: error = EBUSY; break;
30 case ERROR_CALL_NOT_IMPLEMENTED: error = ENOSYS; break;
31 case ERROR_CANNOT_MAKE: error = EACCES; break;
32 case ERROR_CANTOPEN: error = EIO; break;
33 case ERROR_CANTREAD: error = EIO; break;
34 case ERROR_CANTWRITE: error = EIO; break;
35 case ERROR_CRC: error = EIO; break;
36 case ERROR_CURRENT_DIRECTORY: error = EACCES; break;
37 case ERROR_DEVICE_IN_USE: error = EBUSY; break;
38 case ERROR_DEV_NOT_EXIST: error = ENODEV; break;
39 case ERROR_DIRECTORY: error = EINVAL; break;
40 case ERROR_DIR_NOT_EMPTY: error = ENOTEMPTY; break;
41 case ERROR_DISK_CHANGE: error = EIO; break;
42 case ERROR_DISK_FULL: error = ENOSPC; break;
43 case ERROR_DRIVE_LOCKED: error = EBUSY; break;
44 case ERROR_ENVVAR_NOT_FOUND: error = EINVAL; break;
45 case ERROR_EXE_MARKED_INVALID: error = ENOEXEC; break;
46 case ERROR_FILENAME_EXCED_RANGE: error = ENAMETOOLONG; break;
47 case ERROR_FILE_EXISTS: error = EEXIST; break;
48 case ERROR_FILE_INVALID: error = ENODEV; break;
49 case ERROR_FILE_NOT_FOUND: error = ENOENT; break;
50 case ERROR_GEN_FAILURE: error = EIO; break;
51 case ERROR_HANDLE_DISK_FULL: error = ENOSPC; break;
52 case ERROR_INSUFFICIENT_BUFFER: error = ENOMEM; break;
53 case ERROR_INVALID_ACCESS: error = EACCES; break;
54 case ERROR_INVALID_ADDRESS: error = EFAULT; break;
55 case ERROR_INVALID_BLOCK: error = EFAULT; break;
56 case ERROR_INVALID_DATA: error = EINVAL; break;
57 case ERROR_INVALID_DRIVE: error = ENODEV; break;
58 case ERROR_INVALID_EXE_SIGNATURE: error = ENOEXEC; break;
59 case ERROR_INVALID_FLAGS: error = EINVAL; break;
60 case ERROR_INVALID_FUNCTION: error = ENOSYS; break;
61 case ERROR_INVALID_HANDLE: error = EBADF; break;
62 case ERROR_INVALID_LOGON_HOURS: error = EACCES; break;
63 case ERROR_INVALID_NAME: error = EINVAL; break;
64 case ERROR_INVALID_OWNER: error = EINVAL; break;
65 case ERROR_INVALID_PARAMETER: error = EINVAL; break;
66 case ERROR_INVALID_PASSWORD: error = EPERM; break;
67 case ERROR_INVALID_PRIMARY_GROUP: error = EINVAL; break;
68 case ERROR_INVALID_SIGNAL_NUMBER: error = EINVAL; break;
69 case ERROR_INVALID_TARGET_HANDLE: error = EIO; break;
70 case ERROR_INVALID_WORKSTATION: error = EACCES; break;
71 case ERROR_IO_DEVICE: error = EIO; break;
72 case ERROR_IO_INCOMPLETE: error = EINTR; break;
73 case ERROR_LOCKED: error = EBUSY; break;
74 case ERROR_LOCK_VIOLATION: error = EACCES; break;
75 case ERROR_LOGON_FAILURE: error = EACCES; break;
76 case ERROR_MAPPED_ALIGNMENT: error = EINVAL; break;
77 case ERROR_META_EXPANSION_TOO_LONG: error = E2BIG; break;
78 case ERROR_MORE_DATA: error = EPIPE; break;
79 case ERROR_NEGATIVE_SEEK: error = ESPIPE; break;
80 case ERROR_NOACCESS: error = EFAULT; break;
81 case ERROR_NONE_MAPPED: error = EINVAL; break;
82 case ERROR_NOT_ENOUGH_MEMORY: error = ENOMEM; break;
83 case ERROR_NOT_READY: error = EAGAIN; break;
84 case ERROR_NOT_SAME_DEVICE: error = EXDEV; break;
85 case ERROR_NO_DATA: error = EPIPE; break;
86 case ERROR_NO_MORE_SEARCH_HANDLES: error = EIO; break;
87 case ERROR_NO_PROC_SLOTS: error = EAGAIN; break;
88 case ERROR_NO_SUCH_PRIVILEGE: error = EACCES; break;
89 case ERROR_OPEN_FAILED: error = EIO; break;
90 case ERROR_OPEN_FILES: error = EBUSY; break;
91 case ERROR_OPERATION_ABORTED: error = EINTR; break;
92 case ERROR_OUTOFMEMORY: error = ENOMEM; break;
93 case ERROR_PASSWORD_EXPIRED: error = EACCES; break;
94 case ERROR_PATH_BUSY: error = EBUSY; break;
95 case ERROR_PATH_NOT_FOUND: error = ENOENT; break;
96 case ERROR_PIPE_BUSY: error = EBUSY; break;
97 case ERROR_PIPE_CONNECTED: error = EPIPE; break;
98 case ERROR_PIPE_LISTENING: error = EPIPE; break;
99 case ERROR_PIPE_NOT_CONNECTED: error = EPIPE; break;
100 case ERROR_PRIVILEGE_NOT_HELD: error = EACCES; break;
101 case ERROR_READ_FAULT: error = EIO; break;
102 case ERROR_SEEK: error = EIO; break;
103 case ERROR_SEEK_ON_DEVICE: error = ESPIPE; break;
104 case ERROR_SHARING_BUFFER_EXCEEDED: error = ENFILE; break;
105 case ERROR_SHARING_VIOLATION: error = EACCES; break;
106 case ERROR_STACK_OVERFLOW: error = ENOMEM; break;
107 case ERROR_SWAPERROR: error = ENOENT; break;
108 case ERROR_TOO_MANY_MODULES: error = EMFILE; break;
109 case ERROR_TOO_MANY_OPEN_FILES: error = EMFILE; break;
110 case ERROR_UNRECOGNIZED_MEDIA: error = ENXIO; break;
111 case ERROR_UNRECOGNIZED_VOLUME: error = ENODEV; break;
112 case ERROR_WAIT_NO_CHILDREN: error = ECHILD; break;
113 case ERROR_WRITE_FAULT: error = EIO; break;
114 case ERROR_WRITE_PROTECT: error = EROFS; break;
115 }
116 return error;
117}
118#undef unlink
120int mingw_unlink(const char *pathname)
121{
122 /* read-only files cannot be removed */
123 chmod(pathname, 0666);
124 return unlink(pathname);
125}
126#undef open
128int mingw_open (const char *filename, int oflags, ...)
129{
130 va_list args;
131 unsigned mode;
132 int fd;
133 va_start(args, oflags);
135 mode = va_arg(args, int);
136 va_end(args);
137 if (filename && !strcmp(filename, "/dev/null"))
139 filename = "nul";
140 fd = open(filename, oflags, mode);
142 if (fd < 0 && (oflags & O_CREAT) && errno == EACCES) {
144 DWORD attrs = GetFileAttributes(filename);
145 if (attrs != INVALID_FILE_ATTRIBUTES && (attrs & FILE_ATTRIBUTE_DIRECTORY))
146 errno = EISDIR;
147 }
148 return fd;
149}
150#undef write
152ssize_t mingw_write(int fd, const void *buf, size_t count)
153{
154 /*
155 * While write() calls to a file on a local disk are translated
156 * into WriteFile() calls with a maximum size of 64KB on Windows
157 * XP and 256KB on Vista, no such cap is placed on writes to
158 * files over the network on Windows XP. Unfortunately, there
159 * seems to be a limit of 32MB-28KB on X64 and 64MB-32KB on x86;
160 * bigger writes fail on Windows XP.
161 * So we cap to a nice 31MB here to avoid write failures over
162 * the net without changing the number of WriteFile() calls in
163 * the local case.
164 */
165 return write(fd, buf, min(count, 31 * 1024 * 1024));
166}
167#undef fopen
169FILE *mingw_fopen (const char *filename, const char *otype)
170{
171 if (filename && !strcmp(filename, "/dev/null"))
172 filename = "nul";
173 return fopen(filename, otype);
174}
175#undef freopen
177FILE *mingw_freopen (const char *filename, const char *otype, FILE *stream)
178{
179 if (filename && !strcmp(filename, "/dev/null"))
180 filename = "nul";
181 return freopen(filename, otype, stream);
182}
183/*
185 * The unit of FILETIME is 100-nanoseconds since January 1, 1601, UTC.
186 * Returns the 100-nanoseconds ("hekto nanoseconds") since the epoch.
187 */
188static inline long long filetime_to_hnsec(const FILETIME *ft)
189{
190 long long winTime = ((long long)ft->dwHighDateTime << 32) + ft->dwLowDateTime;
191 /* Windows to Unix Epoch conversion */
192 return winTime - 116444736000000000LL;
193}
194static inline time_t filetime_to_time_t(const FILETIME *ft)
196{
197 return (time_t)(filetime_to_hnsec(ft) / 10000000);
198}
199/* We keep the do_lstat code in a separate function to avoid recursion.
201 * When a path ends with a slash, the stat will fail with ENOENT. In
202 * this case, we strip the trailing slashes and stat again.
203 *
204 * If follow is true then act like stat() and report on the link
205 * target. Otherwise report on the link itself.
206 */
207static int do_lstat(int follow, const char *file_name, struct stat *buf)
208{
209 int err;
210 WIN32_FILE_ATTRIBUTE_DATA fdata;
211 if (!(err = get_file_attr(file_name, &fdata))) {
213 buf->st_ino = 0;
214 buf->st_gid = 0;
215 buf->st_uid = 0;
216 buf->st_nlink = 1;
217 buf->st_mode = file_attr_to_st_mode(fdata.dwFileAttributes);
218 buf->st_size = fdata.nFileSizeLow |
219 (((off_t)fdata.nFileSizeHigh)<<32);
220 buf->st_dev = buf->st_rdev = 0; /* not used by Git */
221 buf->st_atime = filetime_to_time_t(&(fdata.ftLastAccessTime));
222 buf->st_mtime = filetime_to_time_t(&(fdata.ftLastWriteTime));
223 buf->st_ctime = filetime_to_time_t(&(fdata.ftCreationTime));
224 if (fdata.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) {
225 WIN32_FIND_DATAA findbuf;
226 HANDLE handle = FindFirstFileA(file_name, &findbuf);
227 if (handle != INVALID_HANDLE_VALUE) {
228 if ((findbuf.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) &&
229 (findbuf.dwReserved0 == IO_REPARSE_TAG_SYMLINK)) {
230 if (follow) {
231 char buffer[MAXIMUM_REPARSE_DATA_BUFFER_SIZE];
232 buf->st_size = readlink(file_name, buffer, MAXIMUM_REPARSE_DATA_BUFFER_SIZE);
233 } else {
234 buf->st_mode = S_IFLNK;
235 }
236 buf->st_mode |= S_IREAD;
237 if (!(findbuf.dwFileAttributes & FILE_ATTRIBUTE_READONLY))
238 buf->st_mode |= S_IWRITE;
239 }
240 FindClose(handle);
241 }
242 }
243 return 0;
244 }
245 errno = err;
246 return -1;
247}
248/* We provide our own lstat/fstat functions, since the provided
250 * lstat/fstat functions are so slow. These stat functions are
251 * tailored for Git's usage (read: fast), and are not meant to be
252 * complete. Note that Git stat()s are redirected to mingw_lstat()
253 * too, since Windows doesn't really handle symlinks that well.
254 */
255static int do_stat_internal(int follow, const char *file_name, struct stat *buf)
256{
257 int namelen;
258 static char alt_name[PATH_MAX];
259 if (!do_lstat(follow, file_name, buf))
261 return 0;
262 /* if file_name ended in a '/', Windows returned ENOENT;
264 * try again without trailing slashes
265 */
266 if (errno != ENOENT)
267 return -1;
268 namelen = strlen(file_name);
270 if (namelen && file_name[namelen-1] != '/')
271 return -1;
272 while (namelen && file_name[namelen-1] == '/')
273 --namelen;
274 if (!namelen || namelen >= PATH_MAX)
275 return -1;
276 memcpy(alt_name, file_name, namelen);
278 alt_name[namelen] = 0;
279 return do_lstat(follow, alt_name, buf);
280}
281int mingw_lstat(const char *file_name, struct stat *buf)
283{
284 return do_stat_internal(0, file_name, buf);
285}
286int mingw_stat(const char *file_name, struct stat *buf)
287{
288 return do_stat_internal(1, file_name, buf);
289}
290#undef fstat
292int mingw_fstat(int fd, struct stat *buf)
293{
294 HANDLE fh = (HANDLE)_get_osfhandle(fd);
295 BY_HANDLE_FILE_INFORMATION fdata;
296 if (fh == INVALID_HANDLE_VALUE) {
298 errno = EBADF;
299 return -1;
300 }
301 /* direct non-file handles to MS's fstat() */
302 if (GetFileType(fh) != FILE_TYPE_DISK)
303 return _fstati64(fd, buf);
304 if (GetFileInformationByHandle(fh, &fdata)) {
306 buf->st_ino = 0;
307 buf->st_gid = 0;
308 buf->st_uid = 0;
309 buf->st_nlink = 1;
310 buf->st_mode = file_attr_to_st_mode(fdata.dwFileAttributes);
311 buf->st_size = fdata.nFileSizeLow |
312 (((off_t)fdata.nFileSizeHigh)<<32);
313 buf->st_dev = buf->st_rdev = 0; /* not used by Git */
314 buf->st_atime = filetime_to_time_t(&(fdata.ftLastAccessTime));
315 buf->st_mtime = filetime_to_time_t(&(fdata.ftLastWriteTime));
316 buf->st_ctime = filetime_to_time_t(&(fdata.ftCreationTime));
317 return 0;
318 }
319 errno = EBADF;
320 return -1;
321}
322static inline void time_t_to_filetime(time_t t, FILETIME *ft)
324{
325 long long winTime = t * 10000000LL + 116444736000000000LL;
326 ft->dwLowDateTime = winTime;
327 ft->dwHighDateTime = winTime >> 32;
328}
329int mingw_utime (const char *file_name, const struct utimbuf *times)
331{
332 FILETIME mft, aft;
333 int fh, rc;
334 /* must have write permission */
336 DWORD attrs = GetFileAttributes(file_name);
337 if (attrs != INVALID_FILE_ATTRIBUTES &&
338 (attrs & FILE_ATTRIBUTE_READONLY)) {
339 /* ignore errors here; open() will report them */
340 SetFileAttributes(file_name, attrs & ~FILE_ATTRIBUTE_READONLY);
341 }
342 if ((fh = open(file_name, O_RDWR | O_BINARY)) < 0) {
344 rc = -1;
345 goto revert_attrs;
346 }
347 if (times) {
349 time_t_to_filetime(times->modtime, &mft);
350 time_t_to_filetime(times->actime, &aft);
351 } else {
352 GetSystemTimeAsFileTime(&mft);
353 aft = mft;
354 }
355 if (!SetFileTime((HANDLE)_get_osfhandle(fh), NULL, &aft, &mft)) {
356 errno = EINVAL;
357 rc = -1;
358 } else
359 rc = 0;
360 close(fh);
361revert_attrs:
363 if (attrs != INVALID_FILE_ATTRIBUTES &&
364 (attrs & FILE_ATTRIBUTE_READONLY)) {
365 /* ignore errors again */
366 SetFileAttributes(file_name, attrs);
367 }
368 return rc;
369}
370unsigned int sleep (unsigned int seconds)
372{
373 Sleep(seconds*1000);
374 return 0;
375}
376int mkstemp(char *template)
378{
379 char *filename = mktemp(template);
380 if (filename == NULL)
381 return -1;
382 return open(filename, O_RDWR | O_CREAT, 0600);
383}
384int gettimeofday(struct timeval *tv, void *tz)
386{
387 FILETIME ft;
388 long long hnsec;
389 GetSystemTimeAsFileTime(&ft);
391 hnsec = filetime_to_hnsec(&ft);
392 tv->tv_sec = hnsec / 10000000;
393 tv->tv_usec = (hnsec % 10000000) / 10;
394 return 0;
395}
396int pipe(int filedes[2])
398{
399 HANDLE h[2];
400 /* this creates non-inheritable handles */
402 if (!CreatePipe(&h[0], &h[1], NULL, 8192)) {
403 errno = err_win_to_posix(GetLastError());
404 return -1;
405 }
406 filedes[0] = _open_osfhandle((int)h[0], O_NOINHERIT);
407 if (filedes[0] < 0) {
408 CloseHandle(h[0]);
409 CloseHandle(h[1]);
410 return -1;
411 }
412 filedes[1] = _open_osfhandle((int)h[1], O_NOINHERIT);
413 if (filedes[0] < 0) {
414 close(filedes[0]);
415 CloseHandle(h[1]);
416 return -1;
417 }
418 return 0;
419}
420struct tm *gmtime_r(const time_t *timep, struct tm *result)
422{
423 /* gmtime() in MSVCRT.DLL is thread-safe, but not reentrant */
424 memcpy(result, gmtime(timep), sizeof(struct tm));
425 return result;
426}
427struct tm *localtime_r(const time_t *timep, struct tm *result)
429{
430 /* localtime() in MSVCRT.DLL is thread-safe, but not reentrant */
431 memcpy(result, localtime(timep), sizeof(struct tm));
432 return result;
433}
434#undef getcwd
436char *mingw_getcwd(char *pointer, int len)
437{
438 int i;
439 char *ret = getcwd(pointer, len);
440 if (!ret)
441 return ret;
442 for (i = 0; pointer[i]; i++)
443 if (pointer[i] == '\\')
444 pointer[i] = '/';
445 return ret;
446}
447#undef getenv
449char *mingw_getenv(const char *name)
450{
451 char *result = getenv(name);
452 if (!result && !strcmp(name, "TMPDIR")) {
453 /* on Windows it is TMP and TEMP */
454 result = getenv("TMP");
455 if (!result)
456 result = getenv("TEMP");
457 }
458 return result;
459}
460/*
462 * See http://msdn2.microsoft.com/en-us/library/17w5ykft(vs.71).aspx
463 * (Parsing C++ Command-Line Arguments)
464 */
465static const char *quote_arg(const char *arg)
466{
467 /* count chars to quote */
468 int len = 0, n = 0;
469 int force_quotes = 0;
470 char *q, *d;
471 const char *p = arg;
472 if (!*p) force_quotes = 1;
473 while (*p) {
474 if (isspace(*p) || *p == '*' || *p == '?' || *p == '{' || *p == '\'')
475 force_quotes = 1;
476 else if (*p == '"')
477 n++;
478 else if (*p == '\\') {
479 int count = 0;
480 while (*p == '\\') {
481 count++;
482 p++;
483 len++;
484 }
485 if (*p == '"')
486 n += count*2 + 1;
487 continue;
488 }
489 len++;
490 p++;
491 }
492 if (!force_quotes && n == 0)
493 return arg;
494 /* insert \ where necessary */
496 d = q = xmalloc(len+n+3);
497 *d++ = '"';
498 while (*arg) {
499 if (*arg == '"')
500 *d++ = '\\';
501 else if (*arg == '\\') {
502 int count = 0;
503 while (*arg == '\\') {
504 count++;
505 *d++ = *arg++;
506 }
507 if (*arg == '"') {
508 while (count-- > 0)
509 *d++ = '\\';
510 *d++ = '\\';
511 }
512 }
513 *d++ = *arg++;
514 }
515 *d++ = '"';
516 *d++ = 0;
517 return q;
518}
519static const char *parse_interpreter(const char *cmd)
521{
522 static char buf[100];
523 char *p, *opt;
524 int n, fd;
525 /* don't even try a .exe */
527 n = strlen(cmd);
528 if (n >= 4 && !strcasecmp(cmd+n-4, ".exe"))
529 return NULL;
530 fd = open(cmd, O_RDONLY);
532 if (fd < 0)
533 return NULL;
534 n = read(fd, buf, sizeof(buf)-1);
535 close(fd);
536 if (n < 4) /* at least '#!/x' and not error */
537 return NULL;
538 if (buf[0] != '#' || buf[1] != '!')
540 return NULL;
541 buf[n] = '\0';
542 p = buf + strcspn(buf, "\r\n");
543 if (!*p)
544 return NULL;
545 *p = '\0';
547 if (!(p = strrchr(buf+2, '/')) && !(p = strrchr(buf+2, '\\')))
548 return NULL;
549 /* strip options */
550 if ((opt = strchr(p+1, ' ')))
551 *opt = '\0';
552 return p+1;
553}
554/*
556 * Splits the PATH into parts.
557 */
558static char **get_path_split(void)
559{
560 char *p, **path, *envpath = getenv("PATH");
561 int i, n = 0;
562 if (!envpath || !*envpath)
564 return NULL;
565 envpath = xstrdup(envpath);
567 p = envpath;
568 while (p) {
569 char *dir = p;
570 p = strchr(p, ';');
571 if (p) *p++ = '\0';
572 if (*dir) { /* not earlier, catches series of ; */
573 ++n;
574 }
575 }
576 if (!n)
577 return NULL;
578 path = xmalloc((n+1)*sizeof(char *));
580 p = envpath;
581 i = 0;
582 do {
583 if (*p)
584 path[i++] = xstrdup(p);
585 p = p+strlen(p)+1;
586 } while (i < n);
587 path[i] = NULL;
588 free(envpath);
590 return path;
592}
593static void free_path_split(char **path)
595{
596 char **p = path;
597 if (!path)
599 return;
600 while (*p)
602 free(*p++);
603 free(path);
604}
605/*
607 * exe_only means that we only want to detect .exe files, but not scripts
608 * (which do not have an extension)
609 */
610static char *lookup_prog(const char *dir, const char *cmd, int isexe, int exe_only)
611{
612 char path[MAX_PATH];
613 snprintf(path, sizeof(path), "%s/%s.exe", dir, cmd);
614 if (!isexe && access(path, F_OK) == 0)
616 return xstrdup(path);
617 path[strlen(path)-4] = '\0';
618 if ((!exe_only || isexe) && access(path, F_OK) == 0)
619 if (!(GetFileAttributes(path) & FILE_ATTRIBUTE_DIRECTORY))
620 return xstrdup(path);
621 return NULL;
622}
623/*
625 * Determines the absolute path of cmd using the split path in path.
626 * If cmd contains a slash or backslash, no lookup is performed.
627 */
628static char *path_lookup(const char *cmd, char **path, int exe_only)
629{
630 char *prog = NULL;
631 int len = strlen(cmd);
632 int isexe = len >= 4 && !strcasecmp(cmd+len-4, ".exe");
633 if (strchr(cmd, '/') || strchr(cmd, '\\'))
635 prog = xstrdup(cmd);
636 while (!prog && *path)
638 prog = lookup_prog(*path++, cmd, isexe, exe_only);
639 return prog;
641}
642static int env_compare(const void *a, const void *b)
644{
645 char *const *ea = a;
646 char *const *eb = b;
647 return strcasecmp(*ea, *eb);
648}
649struct pinfo_t {
651 struct pinfo_t *next;
652 pid_t pid;
653 HANDLE proc;
654} pinfo_t;
655struct pinfo_t *pinfo = NULL;
656CRITICAL_SECTION pinfo_cs;
657static pid_t mingw_spawnve_fd(const char *cmd, const char **argv, char **env,
659 const char *dir,
660 int prepend_cmd, int fhin, int fhout, int fherr)
661{
662 STARTUPINFO si;
663 PROCESS_INFORMATION pi;
664 struct strbuf envblk, args;
665 unsigned flags;
666 BOOL ret;
667 /* Determine whether or not we are associated to a console */
669 HANDLE cons = CreateFile("CONOUT$", GENERIC_WRITE,
670 FILE_SHARE_WRITE, NULL, OPEN_EXISTING,
671 FILE_ATTRIBUTE_NORMAL, NULL);
672 if (cons == INVALID_HANDLE_VALUE) {
673 /* There is no console associated with this process.
674 * Since the child is a console process, Windows
675 * would normally create a console window. But
676 * since we'll be redirecting std streams, we do
677 * not need the console.
678 * It is necessary to use DETACHED_PROCESS
679 * instead of CREATE_NO_WINDOW to make ssh
680 * recognize that it has no console.
681 */
682 flags = DETACHED_PROCESS;
683 } else {
684 /* There is already a console. If we specified
685 * DETACHED_PROCESS here, too, Windows would
686 * disassociate the child from the console.
687 * The same is true for CREATE_NO_WINDOW.
688 * Go figure!
689 */
690 flags = 0;
691 CloseHandle(cons);
692 }
693 memset(&si, 0, sizeof(si));
694 si.cb = sizeof(si);
695 si.dwFlags = STARTF_USESTDHANDLES;
696 si.hStdInput = (HANDLE) _get_osfhandle(fhin);
697 si.hStdOutput = (HANDLE) _get_osfhandle(fhout);
698 si.hStdError = (HANDLE) _get_osfhandle(fherr);
699 /* concatenate argv, quoting args as we go */
701 strbuf_init(&args, 0);
702 if (prepend_cmd) {
703 char *quoted = (char *)quote_arg(cmd);
704 strbuf_addstr(&args, quoted);
705 if (quoted != cmd)
706 free(quoted);
707 }
708 for (; *argv; argv++) {
709 char *quoted = (char *)quote_arg(*argv);
710 if (*args.buf)
711 strbuf_addch(&args, ' ');
712 strbuf_addstr(&args, quoted);
713 if (quoted != *argv)
714 free(quoted);
715 }
716 if (env) {
718 int count = 0;
719 char **e, **sorted_env;
720 for (e = env; *e; e++)
722 count++;
723 /* environment must be sorted */
725 sorted_env = xmalloc(sizeof(*sorted_env) * (count + 1));
726 memcpy(sorted_env, env, sizeof(*sorted_env) * (count + 1));
727 qsort(sorted_env, count, sizeof(*sorted_env), env_compare);
728 strbuf_init(&envblk, 0);
730 for (e = sorted_env; *e; e++) {
731 strbuf_addstr(&envblk, *e);
732 strbuf_addch(&envblk, '\0');
733 }
734 free(sorted_env);
735 }
736 memset(&pi, 0, sizeof(pi));
738 ret = CreateProcess(cmd, args.buf, NULL, NULL, TRUE, flags,
739 env ? envblk.buf : NULL, dir, &si, &pi);
740 if (env)
742 strbuf_release(&envblk);
743 strbuf_release(&args);
744 if (!ret) {
746 errno = ENOENT;
747 return -1;
748 }
749 CloseHandle(pi.hThread);
750 /*
752 * The process ID is the human-readable identifier of the process
753 * that we want to present in log and error messages. The handle
754 * is not useful for this purpose. But we cannot close it, either,
755 * because it is not possible to turn a process ID into a process
756 * handle after the process terminated.
757 * Keep the handle in a list for waitpid.
758 */
759 EnterCriticalSection(&pinfo_cs);
760 {
761 struct pinfo_t *info = xmalloc(sizeof(struct pinfo_t));
762 info->pid = pi.dwProcessId;
763 info->proc = pi.hProcess;
764 info->next = pinfo;
765 pinfo = info;
766 }
767 LeaveCriticalSection(&pinfo_cs);
768 return (pid_t)pi.dwProcessId;
770}
771static pid_t mingw_spawnve(const char *cmd, const char **argv, char **env,
773 int prepend_cmd)
774{
775 return mingw_spawnve_fd(cmd, argv, env, NULL, prepend_cmd, 0, 1, 2);
776}
777pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **env,
779 const char *dir,
780 int fhin, int fhout, int fherr)
781{
782 pid_t pid;
783 char **path = get_path_split();
784 char *prog = path_lookup(cmd, path, 0);
785 if (!prog) {
787 errno = ENOENT;
788 pid = -1;
789 }
790 else {
791 const char *interpr = parse_interpreter(prog);
792 if (interpr) {
794 const char *argv0 = argv[0];
795 char *iprog = path_lookup(interpr, path, 1);
796 argv[0] = prog;
797 if (!iprog) {
798 errno = ENOENT;
799 pid = -1;
800 }
801 else {
802 pid = mingw_spawnve_fd(iprog, argv, env, dir, 1,
803 fhin, fhout, fherr);
804 free(iprog);
805 }
806 argv[0] = argv0;
807 }
808 else
809 pid = mingw_spawnve_fd(prog, argv, env, dir, 0,
810 fhin, fhout, fherr);
811 free(prog);
812 }
813 free_path_split(path);
814 return pid;
815}
816static int try_shell_exec(const char *cmd, char *const *argv, char **env)
818{
819 const char *interpr = parse_interpreter(cmd);
820 char **path;
821 char *prog;
822 int pid = 0;
823 if (!interpr)
825 return 0;
826 path = get_path_split();
827 prog = path_lookup(interpr, path, 1);
828 if (prog) {
829 int argc = 0;
830 const char **argv2;
831 while (argv[argc]) argc++;
832 argv2 = xmalloc(sizeof(*argv) * (argc+1));
833 argv2[0] = (char *)cmd; /* full path to the script file */
834 memcpy(&argv2[1], &argv[1], sizeof(*argv) * argc);
835 pid = mingw_spawnve(prog, argv2, env, 1);
836 if (pid >= 0) {
837 int status;
838 if (waitpid(pid, &status, 0) < 0)
839 status = 255;
840 exit(status);
841 }
842 pid = 1; /* indicate that we tried but failed */
843 free(prog);
844 free(argv2);
845 }
846 free_path_split(path);
847 return pid;
848}
849static void mingw_execve(const char *cmd, char *const *argv, char *const *env)
851{
852 /* check if git_command is a shell script */
853 if (!try_shell_exec(cmd, argv, (char **)env)) {
854 int pid, status;
855 pid = mingw_spawnve(cmd, (const char **)argv, (char **)env, 0);
857 if (pid < 0)
858 return;
859 if (waitpid(pid, &status, 0) < 0)
860 status = 255;
861 exit(status);
862 }
863}
864void mingw_execvp(const char *cmd, char *const *argv)
866{
867 char **path = get_path_split();
868 char *prog = path_lookup(cmd, path, 0);
869 if (prog) {
871 mingw_execve(prog, argv, environ);
872 free(prog);
873 } else
874 errno = ENOENT;
875 free_path_split(path);
877}
878void mingw_execv(const char *cmd, char *const *argv)
880{
881 mingw_execve(cmd, argv, environ);
882}
883int mingw_kill(pid_t pid, int sig)
885{
886 if (pid > 0 && sig == SIGTERM) {
887 HANDLE h = OpenProcess(PROCESS_TERMINATE, FALSE, pid);
888 if (TerminateProcess(h, -1)) {
890 CloseHandle(h);
891 return 0;
892 }
893 errno = err_win_to_posix(GetLastError());
895 CloseHandle(h);
896 return -1;
897 }
898 errno = EINVAL;
900 return -1;
901}
902static char **copy_environ(void)
904{
905 char **env;
906 int i = 0;
907 while (environ[i])
908 i++;
909 env = xmalloc((i+1)*sizeof(*env));
910 for (i = 0; environ[i]; i++)
911 env[i] = xstrdup(environ[i]);
912 env[i] = NULL;
913 return env;
914}
915void free_environ(char **env)
917{
918 int i;
919 for (i = 0; env[i]; i++)
920 free(env[i]);
921 free(env);
922}
923static int lookup_env(char **env, const char *name, size_t nmln)
925{
926 int i;
927 for (i = 0; env[i]; i++) {
929 if (0 == strncmp(env[i], name, nmln)
930 && '=' == env[i][nmln])
931 /* matches */
932 return i;
933 }
934 return -1;
935}
936/*
938 * If name contains '=', then sets the variable, otherwise it unsets it
939 */
940static char **env_setenv(char **env, const char *name)
941{
942 char *eq = strchrnul(name, '=');
943 int i = lookup_env(env, name, eq-name);
944 if (i < 0) {
946 if (*eq) {
947 for (i = 0; env[i]; i++)
948 ;
949 env = xrealloc(env, (i+2)*sizeof(*env));
950 env[i] = xstrdup(name);
951 env[i+1] = NULL;
952 }
953 }
954 else {
955 free(env[i]);
956 if (*eq)
957 env[i] = xstrdup(name);
958 else
959 for (; env[i]; i++)
960 env[i] = env[i+1];
961 }
962 return env;
963}
964/*
966 * Copies global environ and adjusts variables as specified by vars.
967 */
968char **make_augmented_environ(const char *const *vars)
969{
970 char **env = copy_environ();
971 while (*vars)
973 env = env_setenv(env, *vars++);
974 return env;
975}
976/*
978 * Note, this isn't a complete replacement for getaddrinfo. It assumes
979 * that service contains a numerical port, or that it it is null. It
980 * does a simple search using gethostbyname, and returns one IPv4 host
981 * if one was found.
982 */
983static int WSAAPI getaddrinfo_stub(const char *node, const char *service,
984 const struct addrinfo *hints,
985 struct addrinfo **res)
986{
987 struct hostent *h = NULL;
988 struct addrinfo *ai;
989 struct sockaddr_in *sin;
990 if (node) {
992 h = gethostbyname(node);
993 if (!h)
994 return WSAGetLastError();
995 }
996 ai = xmalloc(sizeof(struct addrinfo));
998 *res = ai;
999 ai->ai_flags = 0;
1000 ai->ai_family = AF_INET;
1001 ai->ai_socktype = hints ? hints->ai_socktype : 0;
1002 switch (ai->ai_socktype) {
1003 case SOCK_STREAM:
1004 ai->ai_protocol = IPPROTO_TCP;
1005 break;
1006 case SOCK_DGRAM:
1007 ai->ai_protocol = IPPROTO_UDP;
1008 break;
1009 default:
1010 ai->ai_protocol = 0;
1011 break;
1012 }
1013 ai->ai_addrlen = sizeof(struct sockaddr_in);
1014 if (hints && (hints->ai_flags & AI_CANONNAME))
1015 ai->ai_canonname = h ? strdup(h->h_name) : NULL;
1016 else
1017 ai->ai_canonname = NULL;
1018 sin = xmalloc(ai->ai_addrlen);
1020 memset(sin, 0, ai->ai_addrlen);
1021 sin->sin_family = AF_INET;
1022 /* Note: getaddrinfo is supposed to allow service to be a string,
1023 * which should be looked up using getservbyname. This is
1024 * currently not implemented */
1025 if (service)
1026 sin->sin_port = htons(atoi(service));
1027 if (h)
1028 sin->sin_addr = *(struct in_addr *)h->h_addr;
1029 else if (hints && (hints->ai_flags & AI_PASSIVE))
1030 sin->sin_addr.s_addr = INADDR_ANY;
1031 else
1032 sin->sin_addr.s_addr = INADDR_LOOPBACK;
1033 ai->ai_addr = (struct sockaddr *)sin;
1034 ai->ai_next = 0;
1035 return 0;
1036}
1037static void WSAAPI freeaddrinfo_stub(struct addrinfo *res)
1039{
1040 free(res->ai_canonname);
1041 free(res->ai_addr);
1042 free(res);
1043}
1044static int WSAAPI getnameinfo_stub(const struct sockaddr *sa, socklen_t salen,
1046 char *host, DWORD hostlen,
1047 char *serv, DWORD servlen, int flags)
1048{
1049 const struct sockaddr_in *sin = (const struct sockaddr_in *)sa;
1050 if (sa->sa_family != AF_INET)
1051 return EAI_FAMILY;
1052 if (!host && !serv)
1053 return EAI_NONAME;
1054 if (host && hostlen > 0) {
1056 struct hostent *ent = NULL;
1057 if (!(flags & NI_NUMERICHOST))
1058 ent = gethostbyaddr((const char *)&sin->sin_addr,
1059 sizeof(sin->sin_addr), AF_INET);
1060 if (ent)
1062 snprintf(host, hostlen, "%s", ent->h_name);
1063 else if (flags & NI_NAMEREQD)
1064 return EAI_NONAME;
1065 else
1066 snprintf(host, hostlen, "%s", inet_ntoa(sin->sin_addr));
1067 }
1068 if (serv && servlen > 0) {
1070 struct servent *ent = NULL;
1071 if (!(flags & NI_NUMERICSERV))
1072 ent = getservbyport(sin->sin_port,
1073 flags & NI_DGRAM ? "udp" : "tcp");
1074 if (ent)
1076 snprintf(serv, servlen, "%s", ent->s_name);
1077 else
1078 snprintf(serv, servlen, "%d", ntohs(sin->sin_port));
1079 }
1080 return 0;
1082}
1083static HMODULE ipv6_dll = NULL;
1085static void (WSAAPI *ipv6_freeaddrinfo)(struct addrinfo *res);
1086static int (WSAAPI *ipv6_getaddrinfo)(const char *node, const char *service,
1087 const struct addrinfo *hints,
1088 struct addrinfo **res);
1089static int (WSAAPI *ipv6_getnameinfo)(const struct sockaddr *sa, socklen_t salen,
1090 char *host, DWORD hostlen,
1091 char *serv, DWORD servlen, int flags);
1092/*
1093 * gai_strerror is an inline function in the ws2tcpip.h header, so we
1094 * don't need to try to load that one dynamically.
1095 */
1096static void socket_cleanup(void)
1098{
1099 WSACleanup();
1100 if (ipv6_dll)
1101 FreeLibrary(ipv6_dll);
1102 ipv6_dll = NULL;
1103 ipv6_freeaddrinfo = freeaddrinfo_stub;
1104 ipv6_getaddrinfo = getaddrinfo_stub;
1105 ipv6_getnameinfo = getnameinfo_stub;
1106}
1107static void ensure_socket_initialization(void)
1109{
1110 WSADATA wsa;
1111 static int initialized = 0;
1112 const char *libraries[] = { "ws2_32.dll", "wship6.dll", NULL };
1113 const char **name;
1114 if (initialized)
1116 return;
1117 if (WSAStartup(MAKEWORD(2,2), &wsa))
1119 die("unable to initialize winsock subsystem, error %d",
1120 WSAGetLastError());
1121 for (name = libraries; *name; name++) {
1123 ipv6_dll = LoadLibrary(*name);
1124 if (!ipv6_dll)
1125 continue;
1126 ipv6_freeaddrinfo = (void (WSAAPI *)(struct addrinfo *))
1128 GetProcAddress(ipv6_dll, "freeaddrinfo");
1129 ipv6_getaddrinfo = (int (WSAAPI *)(const char *, const char *,
1130 const struct addrinfo *,
1131 struct addrinfo **))
1132 GetProcAddress(ipv6_dll, "getaddrinfo");
1133 ipv6_getnameinfo = (int (WSAAPI *)(const struct sockaddr *,
1134 socklen_t, char *, DWORD,
1135 char *, DWORD, int))
1136 GetProcAddress(ipv6_dll, "getnameinfo");
1137 if (!ipv6_freeaddrinfo || !ipv6_getaddrinfo || !ipv6_getnameinfo) {
1138 FreeLibrary(ipv6_dll);
1139 ipv6_dll = NULL;
1140 } else
1141 break;
1142 }
1143 if (!ipv6_freeaddrinfo || !ipv6_getaddrinfo || !ipv6_getnameinfo) {
1144 ipv6_freeaddrinfo = freeaddrinfo_stub;
1145 ipv6_getaddrinfo = getaddrinfo_stub;
1146 ipv6_getnameinfo = getnameinfo_stub;
1147 }
1148 atexit(socket_cleanup);
1150 initialized = 1;
1151}
1152#undef gethostbyname
1154struct hostent *mingw_gethostbyname(const char *host)
1155{
1156 ensure_socket_initialization();
1157 return gethostbyname(host);
1158}
1159void mingw_freeaddrinfo(struct addrinfo *res)
1161{
1162 ipv6_freeaddrinfo(res);
1163}
1164int mingw_getaddrinfo(const char *node, const char *service,
1166 const struct addrinfo *hints, struct addrinfo **res)
1167{
1168 ensure_socket_initialization();
1169 return ipv6_getaddrinfo(node, service, hints, res);
1170}
1171int mingw_getnameinfo(const struct sockaddr *sa, socklen_t salen,
1173 char *host, DWORD hostlen, char *serv, DWORD servlen,
1174 int flags)
1175{
1176 ensure_socket_initialization();
1177 return ipv6_getnameinfo(sa, salen, host, hostlen, serv, servlen, flags);
1178}
1179int mingw_socket(int domain, int type, int protocol)
1181{
1182 int sockfd;
1183 SOCKET s;
1184 ensure_socket_initialization();
1186 s = WSASocket(domain, type, protocol, NULL, 0, 0);
1187 if (s == INVALID_SOCKET) {
1188 /*
1189 * WSAGetLastError() values are regular BSD error codes
1190 * biased by WSABASEERR.
1191 * However, strerror() does not know about networking
1192 * specific errors, which are values beginning at 38 or so.
1193 * Therefore, we choose to leave the biased error code
1194 * in errno so that _if_ someone looks up the code somewhere,
1195 * then it is at least the number that are usually listed.
1196 */
1197 errno = WSAGetLastError();
1198 return -1;
1199 }
1200 /* convert into a file descriptor */
1201 if ((sockfd = _open_osfhandle(s, O_RDWR|O_BINARY)) < 0) {
1202 closesocket(s);
1203 return error("unable to make a socket file descriptor: %s",
1204 strerror(errno));
1205 }
1206 return sockfd;
1207}
1208#undef connect
1210int mingw_connect(int sockfd, struct sockaddr *sa, size_t sz)
1211{
1212 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
1213 return connect(s, sa, sz);
1214}
1215#undef bind
1217int mingw_bind(int sockfd, struct sockaddr *sa, size_t sz)
1218{
1219 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
1220 return bind(s, sa, sz);
1221}
1222#undef setsockopt
1224int mingw_setsockopt(int sockfd, int lvl, int optname, void *optval, int optlen)
1225{
1226 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
1227 return setsockopt(s, lvl, optname, (const char*)optval, optlen);
1228}
1229#undef listen
1231int mingw_listen(int sockfd, int backlog)
1232{
1233 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
1234 return listen(s, backlog);
1235}
1236#undef accept
1238int mingw_accept(int sockfd1, struct sockaddr *sa, socklen_t *sz)
1239{
1240 int sockfd2;
1241 SOCKET s1 = (SOCKET)_get_osfhandle(sockfd1);
1243 SOCKET s2 = accept(s1, sa, sz);
1244 /* convert into a file descriptor */
1246 if ((sockfd2 = _open_osfhandle(s2, O_RDWR|O_BINARY)) < 0) {
1247 int err = errno;
1248 closesocket(s2);
1249 return error("unable to make a socket file descriptor: %s",
1250 strerror(err));
1251 }
1252 return sockfd2;
1253}
1254#undef rename
1256int mingw_rename(const char *pold, const char *pnew)
1257{
1258 DWORD attrs, gle;
1259 int tries = 0;
1260 static const int delay[] = { 0, 1, 10, 20, 40 };
1261 /*
1263 * Try native rename() first to get errno right.
1264 * It is based on MoveFile(), which cannot overwrite existing files.
1265 */
1266 if (!rename(pold, pnew))
1267 return 0;
1268 if (errno != EEXIST)
1269 return -1;
1270repeat:
1271 if (MoveFileEx(pold, pnew, MOVEFILE_REPLACE_EXISTING))
1272 return 0;
1273 /* TODO: translate more errors */
1274 gle = GetLastError();
1275 if (gle == ERROR_ACCESS_DENIED &&
1276 (attrs = GetFileAttributes(pnew)) != INVALID_FILE_ATTRIBUTES) {
1277 if (attrs & FILE_ATTRIBUTE_DIRECTORY) {
1278 errno = EISDIR;
1279 return -1;
1280 }
1281 if ((attrs & FILE_ATTRIBUTE_READONLY) &&
1282 SetFileAttributes(pnew, attrs & ~FILE_ATTRIBUTE_READONLY)) {
1283 if (MoveFileEx(pold, pnew, MOVEFILE_REPLACE_EXISTING))
1284 return 0;
1285 gle = GetLastError();
1286 /* revert file attributes on failure */
1287 SetFileAttributes(pnew, attrs);
1288 }
1289 }
1290 if (tries < ARRAY_SIZE(delay) && gle == ERROR_ACCESS_DENIED) {
1291 /*
1292 * We assume that some other process had the source or
1293 * destination file open at the wrong moment and retry.
1294 * In order to give the other process a higher chance to
1295 * complete its operation, we give up our time slice now.
1296 * If we have to retry again, we do sleep a bit.
1297 */
1298 Sleep(delay[tries]);
1299 tries++;
1300 goto repeat;
1301 }
1302 errno = EACCES;
1303 return -1;
1304}
1305/*
1307 * Note that this doesn't return the actual pagesize, but
1308 * the allocation granularity. If future Windows specific git code
1309 * needs the real getpagesize function, we need to find another solution.
1310 */
1311int mingw_getpagesize(void)
1312{
1313 SYSTEM_INFO si;
1314 GetSystemInfo(&si);
1315 return si.dwAllocationGranularity;
1316}
1317struct passwd *getpwuid(int uid)
1319{
1320 static char user_name[100];
1321 static struct passwd p;
1322 DWORD len = sizeof(user_name);
1324 if (!GetUserName(user_name, &len))
1325 return NULL;
1326 p.pw_name = user_name;
1327 p.pw_gecos = "unknown";
1328 p.pw_dir = NULL;
1329 return &p;
1330}
1331static HANDLE timer_event;
1333static HANDLE timer_thread;
1334static int timer_interval;
1335static int one_shot;
1336static sig_handler_t timer_fn = SIG_DFL;
1337/* The timer works like this:
1339 * The thread, ticktack(), is a trivial routine that most of the time
1340 * only waits to receive the signal to terminate. The main thread tells
1341 * the thread to terminate by setting the timer_event to the signalled
1342 * state.
1343 * But ticktack() interrupts the wait state after the timer's interval
1344 * length to call the signal handler.
1345 */
1346static unsigned __stdcall ticktack(void *dummy)
1348{
1349 while (WaitForSingleObject(timer_event, timer_interval) == WAIT_TIMEOUT) {
1350 if (timer_fn == SIG_DFL)
1351 die("Alarm");
1352 if (timer_fn != SIG_IGN)
1353 timer_fn(SIGALRM);
1354 if (one_shot)
1355 break;
1356 }
1357 return 0;
1358}
1359static int start_timer_thread(void)
1361{
1362 timer_event = CreateEvent(NULL, FALSE, FALSE, NULL);
1363 if (timer_event) {
1364 timer_thread = (HANDLE) _beginthreadex(NULL, 0, ticktack, NULL, 0, NULL);
1365 if (!timer_thread )
1366 return errno = ENOMEM,
1367 error("cannot start timer thread");
1368 } else
1369 return errno = ENOMEM,
1370 error("cannot allocate resources for timer");
1371 return 0;
1372}
1373static void stop_timer_thread(void)
1375{
1376 if (timer_event)
1377 SetEvent(timer_event); /* tell thread to terminate */
1378 if (timer_thread) {
1379 int rc = WaitForSingleObject(timer_thread, 1000);
1380 if (rc == WAIT_TIMEOUT)
1381 error("timer thread did not terminate timely");
1382 else if (rc != WAIT_OBJECT_0)
1383 error("waiting for timer thread failed: %lu",
1384 GetLastError());
1385 CloseHandle(timer_thread);
1386 }
1387 if (timer_event)
1388 CloseHandle(timer_event);
1389 timer_event = NULL;
1390 timer_thread = NULL;
1391}
1392static inline int is_timeval_eq(const struct timeval *i1, const struct timeval *i2)
1394{
1395 return i1->tv_sec == i2->tv_sec && i1->tv_usec == i2->tv_usec;
1396}
1397int setitimer(int type, struct itimerval *in, struct itimerval *out)
1399{
1400 static const struct timeval zero;
1401 static int atexit_done;
1402 if (out != NULL)
1404 return errno = EINVAL,
1405 error("setitimer param 3 != NULL not implemented");
1406 if (!is_timeval_eq(&in->it_interval, &zero) &&
1407 !is_timeval_eq(&in->it_interval, &in->it_value))
1408 return errno = EINVAL,
1409 error("setitimer: it_interval must be zero or eq it_value");
1410 if (timer_thread)
1412 stop_timer_thread();
1413 if (is_timeval_eq(&in->it_value, &zero) &&
1415 is_timeval_eq(&in->it_interval, &zero))
1416 return 0;
1417 timer_interval = in->it_value.tv_sec * 1000 + in->it_value.tv_usec / 1000;
1419 one_shot = is_timeval_eq(&in->it_interval, &zero);
1420 if (!atexit_done) {
1421 atexit(stop_timer_thread);
1422 atexit_done = 1;
1423 }
1424 return start_timer_thread();
1425}
1426int sigaction(int sig, struct sigaction *in, struct sigaction *out)
1428{
1429 if (sig != SIGALRM)
1430 return errno = EINVAL,
1431 error("sigaction only implemented for SIGALRM");
1432 if (out != NULL)
1433 return errno = EINVAL,
1434 error("sigaction: param 3 != NULL not implemented");
1435 timer_fn = in->sa_handler;
1437 return 0;
1438}
1439#undef signal
1441sig_handler_t mingw_signal(int sig, sig_handler_t handler)
1442{
1443 sig_handler_t old = timer_fn;
1444 if (sig != SIGALRM)
1445 return signal(sig, handler);
1446 timer_fn = handler;
1447 return old;
1448}
1449static const char *make_backslash_path(const char *path)
1451{
1452 static char buf[PATH_MAX + 1];
1453 char *c;
1454 if (strlcpy(buf, path, PATH_MAX) >= PATH_MAX)
1456 die("Too long path: %.*s", 60, path);
1457 for (c = buf; *c; c++) {
1459 if (*c == '/')
1460 *c = '\\';
1461 }
1462 return buf;
1463}
1464void mingw_open_html(const char *unixpath)
1466{
1467 const char *htmlpath = make_backslash_path(unixpath);
1468 typedef HINSTANCE (WINAPI *T)(HWND, const char *,
1469 const char *, const char *, const char *, INT);
1470 T ShellExecute;
1471 HMODULE shell32;
1472 int r;
1473 shell32 = LoadLibrary("shell32.dll");
1475 if (!shell32)
1476 die("cannot load shell32.dll");
1477 ShellExecute = (T)GetProcAddress(shell32, "ShellExecuteA");
1478 if (!ShellExecute)
1479 die("cannot run browser");
1480 printf("Launching default browser to display HTML ...\n");
1482 r = (int)ShellExecute(NULL, "open", htmlpath, NULL, "\\", SW_SHOWNORMAL);
1483 FreeLibrary(shell32);
1484 /* see the MSDN documentation referring to the result codes here */
1485 if (r <= 32) {
1486 die("failed to launch browser for %.*s", MAX_PATH, unixpath);
1487 }
1488}
1489int link(const char *oldpath, const char *newpath)
1491{
1492 typedef BOOL (WINAPI *T)(const char*, const char*, LPSECURITY_ATTRIBUTES);
1493 static T create_hard_link = NULL;
1494 if (!create_hard_link) {
1495 create_hard_link = (T) GetProcAddress(
1496 GetModuleHandle("kernel32.dll"), "CreateHardLinkA");
1497 if (!create_hard_link)
1498 create_hard_link = (T)-1;
1499 }
1500 if (create_hard_link == (T)-1) {
1501 errno = ENOSYS;
1502 return -1;
1503 }
1504 if (!create_hard_link(newpath, oldpath, NULL)) {
1505 errno = err_win_to_posix(GetLastError());
1506 return -1;
1507 }
1508 return 0;
1509}
1510char *getpass(const char *prompt)
1512{
1513 struct strbuf buf = STRBUF_INIT;
1514 fputs(prompt, stderr);
1516 for (;;) {
1517 char c = _getch();
1518 if (c == '\r' || c == '\n')
1519 break;
1520 strbuf_addch(&buf, c);
1521 }
1522 fputs("\n", stderr);
1523 return strbuf_detach(&buf, NULL);
1524}
1525pid_t waitpid(pid_t pid, int *status, unsigned options)
1527{
1528 HANDLE h = OpenProcess(SYNCHRONIZE | PROCESS_QUERY_INFORMATION,
1529 FALSE, pid);
1530 if (!h) {
1531 errno = ECHILD;
1532 return -1;
1533 }
1534 if (pid > 0 && options & WNOHANG) {
1536 if (WAIT_OBJECT_0 != WaitForSingleObject(h, 0)) {
1537 CloseHandle(h);
1538 return 0;
1539 }
1540 options &= ~WNOHANG;
1541 }
1542 if (options == 0) {
1544 struct pinfo_t **ppinfo;
1545 if (WaitForSingleObject(h, INFINITE) != WAIT_OBJECT_0) {
1546 CloseHandle(h);
1547 return 0;
1548 }
1549 if (status)
1551 GetExitCodeProcess(h, (LPDWORD)status);
1552 EnterCriticalSection(&pinfo_cs);
1554 ppinfo = &pinfo;
1556 while (*ppinfo) {
1557 struct pinfo_t *info = *ppinfo;
1558 if (info->pid == pid) {
1559 CloseHandle(info->proc);
1560 *ppinfo = info->next;
1561 free(info);
1562 break;
1563 }
1564 ppinfo = &info->next;
1565 }
1566 LeaveCriticalSection(&pinfo_cs);
1568 CloseHandle(h);
1570 return pid;
1571 }
1572 CloseHandle(h);
1573 errno = EINVAL;
1575 return -1;
1576}