convert trivial cases to ALLOC_ARRAY
[git/git.git] / compat / mingw.c
CommitLineData
f4626df5 1#include "../git-compat-util.h"
444dc903 2#include "win32.h"
28a559c0 3#include <conio.h>
85faec9d 4#include <wchar.h>
7e5d7768 5#include "../strbuf.h"
c9b78400 6#include "../run-command.h"
7eb2619c 7#include "../cache.h"
f4626df5 8
19e12549
HV
9static const int delay[] = { 0, 1, 10, 20, 40 };
10
44626dc7 11int err_win_to_posix(DWORD winerr)
b3debd2b
PK
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
19e12549
HV
124static 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
c9b78400
HV
135static 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
173static 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
06bc4b79 183 if ((retry_hook[0] = mingw_getenv("GIT_ASK_YESNO"))) {
c9b78400
HV
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
337967fb
HV
203int mingw_unlink(const char *pathname)
204{
19e12549 205 int ret, tries = 0;
85faec9d
KB
206 wchar_t wpathname[MAX_PATH];
207 if (xutftowcs_path(wpathname, pathname) < 0)
208 return -1;
19e12549 209
337967fb 210 /* read-only files cannot be removed */
85faec9d
KB
211 _wchmod(wpathname, 0666);
212 while ((ret = _wunlink(wpathname)) == -1 && tries < ARRAY_SIZE(delay)) {
19e12549
HV
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 }
c9b78400
HV
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))
85faec9d 228 ret = _wunlink(wpathname);
19e12549 229 return ret;
337967fb
HV
230}
231
85faec9d 232static int is_dir_empty(const wchar_t *wpath)
ab1a11be 233{
85faec9d 234 WIN32_FIND_DATAW findbuf;
ab1a11be 235 HANDLE handle;
85faec9d
KB
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)
ab1a11be 241 return GetLastError() == ERROR_NO_MORE_FILES;
ab1a11be 242
85faec9d
KB
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;
ab1a11be
JS
249 }
250 FindClose(handle);
ab1a11be
JS
251 return 0;
252}
253
4f288100
HV
254int mingw_rmdir(const char *pathname)
255{
256 int ret, tries = 0;
85faec9d
KB
257 wchar_t wpathname[MAX_PATH];
258 if (xutftowcs_path(wpathname, pathname) < 0)
259 return -1;
4f288100 260
85faec9d 261 while ((ret = _wrmdir(wpathname)) == -1 && tries < ARRAY_SIZE(delay)) {
4f288100 262 if (!is_file_in_use_error(GetLastError()))
a83b2b57
EFL
263 errno = err_win_to_posix(GetLastError());
264 if (errno != EACCES)
4f288100 265 break;
85faec9d 266 if (!is_dir_empty(wpathname)) {
ab1a11be
JS
267 errno = ENOTEMPTY;
268 break;
269 }
4f288100
HV
270 /*
271 * We assume that some other process had the source or
272 * destination file open at the wrong moment and retry.
273 * In order to give the other process a higher chance to
274 * complete its operation, we give up our time slice now.
275 * If we have to retry again, we do sleep a bit.
276 */
277 Sleep(delay[tries]);
278 tries++;
279 }
a83b2b57 280 while (ret == -1 && errno == EACCES && is_file_in_use_error(GetLastError()) &&
4f288100
HV
281 ask_yes_no_if_possible("Deletion of directory '%s' failed. "
282 "Should I try again?", pathname))
85faec9d
KB
283 ret = _wrmdir(wpathname);
284 return ret;
285}
286
287int mingw_mkdir(const char *path, int mode)
288{
289 int ret;
290 wchar_t wpath[MAX_PATH];
291 if (xutftowcs_path(wpath, path) < 0)
292 return -1;
293 ret = _wmkdir(wpath);
4f288100
HV
294 return ret;
295}
296
3e4a1ba0
JS
297int mingw_open (const char *filename, int oflags, ...)
298{
299 va_list args;
300 unsigned mode;
0d30ad71 301 int fd;
85faec9d 302 wchar_t wfilename[MAX_PATH];
0d30ad71 303
3e4a1ba0
JS
304 va_start(args, oflags);
305 mode = va_arg(args, int);
306 va_end(args);
307
1a404209 308 if (filename && !strcmp(filename, "/dev/null"))
3e4a1ba0 309 filename = "nul";
0d30ad71 310
85faec9d
KB
311 if (xutftowcs_path(wfilename, filename) < 0)
312 return -1;
313 fd = _wopen(wfilename, oflags, mode);
0d30ad71 314
ba6fad02 315 if (fd < 0 && (oflags & O_ACCMODE) != O_RDONLY && errno == EACCES) {
85faec9d 316 DWORD attrs = GetFileAttributesW(wfilename);
3e4a1ba0
JS
317 if (attrs != INVALID_FILE_ATTRIBUTES && (attrs & FILE_ATTRIBUTE_DIRECTORY))
318 errno = EISDIR;
319 }
320 return fd;
321}
322
176478a8
EFL
323static BOOL WINAPI ctrl_ignore(DWORD type)
324{
325 return TRUE;
326}
327
328#undef fgetc
329int mingw_fgetc(FILE *stream)
330{
331 int ch;
332 if (!isatty(_fileno(stream)))
333 return fgetc(stream);
334
335 SetConsoleCtrlHandler(ctrl_ignore, TRUE);
336 while (1) {
337 ch = fgetc(stream);
338 if (ch != EOF || GetLastError() != ERROR_OPERATION_ABORTED)
339 break;
340
341 /* Ctrl+C was pressed, simulate SIGINT and retry */
342 mingw_raise(SIGINT);
343 }
344 SetConsoleCtrlHandler(ctrl_ignore, FALSE);
345 return ch;
346}
347
3fdcdbdf
JS
348#undef fopen
349FILE *mingw_fopen (const char *filename, const char *otype)
350{
85faec9d
KB
351 FILE *file;
352 wchar_t wfilename[MAX_PATH], wotype[4];
1a404209 353 if (filename && !strcmp(filename, "/dev/null"))
3fdcdbdf 354 filename = "nul";
85faec9d
KB
355 if (xutftowcs_path(wfilename, filename) < 0 ||
356 xutftowcs(wotype, otype, ARRAY_SIZE(wotype)) < 0)
357 return NULL;
358 file = _wfopen(wfilename, wotype);
359 return file;
3fdcdbdf
JS
360}
361
3fdcdbdf
JS
362FILE *mingw_freopen (const char *filename, const char *otype, FILE *stream)
363{
85faec9d
KB
364 FILE *file;
365 wchar_t wfilename[MAX_PATH], wotype[4];
3fdcdbdf
JS
366 if (filename && !strcmp(filename, "/dev/null"))
367 filename = "nul";
85faec9d
KB
368 if (xutftowcs_path(wfilename, filename) < 0 ||
369 xutftowcs(wotype, otype, ARRAY_SIZE(wotype)) < 0)
370 return NULL;
371 file = _wfreopen(wfilename, wotype, stream);
372 return file;
3fdcdbdf
JS
373}
374
84adb641
JS
375#undef fflush
376int mingw_fflush(FILE *stream)
377{
378 int ret = fflush(stream);
379
380 /*
381 * write() is used behind the scenes of stdio output functions.
382 * Since git code does not check for errors after each stdio write
383 * operation, it can happen that write() is called by a later
384 * stdio function even if an earlier write() call failed. In the
385 * case of a pipe whose readable end was closed, only the first
386 * call to write() reports EPIPE on Windows. Subsequent write()
387 * calls report EINVAL. It is impossible to notice whether this
388 * fflush invocation triggered such a case, therefore, we have to
389 * catch all EINVAL errors whole-sale.
390 */
391 if (ret && errno == EINVAL)
392 errno = EPIPE;
393
394 return ret;
395}
396
2b86292e
JS
397#undef write
398ssize_t mingw_write(int fd, const void *buf, size_t len)
399{
400 ssize_t result = write(fd, buf, len);
401
402 if (result < 0 && errno == EINVAL && buf) {
403 /* check if fd is a pipe */
404 HANDLE h = (HANDLE) _get_osfhandle(fd);
405 if (GetFileType(h) == FILE_TYPE_PIPE)
406 errno = EPIPE;
407 else
408 errno = EINVAL;
409 }
410
411 return result;
412}
413
85faec9d
KB
414int mingw_access(const char *filename, int mode)
415{
416 wchar_t wfilename[MAX_PATH];
417 if (xutftowcs_path(wfilename, filename) < 0)
418 return -1;
419 /* X_OK is not supported by the MSVCRT version */
420 return _waccess(wfilename, mode & ~X_OK);
421}
422
423int mingw_chdir(const char *dirname)
424{
425 wchar_t wdirname[MAX_PATH];
426 if (xutftowcs_path(wdirname, dirname) < 0)
427 return -1;
428 return _wchdir(wdirname);
429}
430
431int mingw_chmod(const char *filename, int mode)
432{
433 wchar_t wfilename[MAX_PATH];
434 if (xutftowcs_path(wfilename, filename) < 0)
435 return -1;
436 return _wchmod(wfilename, mode);
437}
438
a6d15bc3
JS
439/*
440 * The unit of FILETIME is 100-nanoseconds since January 1, 1601, UTC.
441 * Returns the 100-nanoseconds ("hekto nanoseconds") since the epoch.
442 */
443static inline long long filetime_to_hnsec(const FILETIME *ft)
5411bdc4
MSO
444{
445 long long winTime = ((long long)ft->dwHighDateTime << 32) + ft->dwLowDateTime;
a6d15bc3
JS
446 /* Windows to Unix Epoch conversion */
447 return winTime - 116444736000000000LL;
448}
449
450static inline time_t filetime_to_time_t(const FILETIME *ft)
451{
452 return (time_t)(filetime_to_hnsec(ft) / 10000000);
5411bdc4
MSO
453}
454
5411bdc4
MSO
455/* We keep the do_lstat code in a separate function to avoid recursion.
456 * When a path ends with a slash, the stat will fail with ENOENT. In
457 * this case, we strip the trailing slashes and stat again.
9b9784ca
PT
458 *
459 * If follow is true then act like stat() and report on the link
460 * target. Otherwise report on the link itself.
5411bdc4 461 */
9b9784ca 462static int do_lstat(int follow, const char *file_name, struct stat *buf)
5411bdc4
MSO
463{
464 WIN32_FILE_ATTRIBUTE_DATA fdata;
85faec9d
KB
465 wchar_t wfilename[MAX_PATH];
466 if (xutftowcs_path(wfilename, file_name) < 0)
467 return -1;
5411bdc4 468
85faec9d 469 if (GetFileAttributesExW(wfilename, GetFileExInfoStandard, &fdata)) {
5411bdc4
MSO
470 buf->st_ino = 0;
471 buf->st_gid = 0;
472 buf->st_uid = 0;
180964f0 473 buf->st_nlink = 1;
444dc903 474 buf->st_mode = file_attr_to_st_mode(fdata.dwFileAttributes);
1d4e4cd4
JS
475 buf->st_size = fdata.nFileSizeLow |
476 (((off_t)fdata.nFileSizeHigh)<<32);
8252df62 477 buf->st_dev = buf->st_rdev = 0; /* not used by Git */
5411bdc4
MSO
478 buf->st_atime = filetime_to_time_t(&(fdata.ftLastAccessTime));
479 buf->st_mtime = filetime_to_time_t(&(fdata.ftLastWriteTime));
480 buf->st_ctime = filetime_to_time_t(&(fdata.ftCreationTime));
9b9784ca 481 if (fdata.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) {
85faec9d
KB
482 WIN32_FIND_DATAW findbuf;
483 HANDLE handle = FindFirstFileW(wfilename, &findbuf);
9b9784ca
PT
484 if (handle != INVALID_HANDLE_VALUE) {
485 if ((findbuf.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) &&
486 (findbuf.dwReserved0 == IO_REPARSE_TAG_SYMLINK)) {
487 if (follow) {
488 char buffer[MAXIMUM_REPARSE_DATA_BUFFER_SIZE];
489 buf->st_size = readlink(file_name, buffer, MAXIMUM_REPARSE_DATA_BUFFER_SIZE);
490 } else {
491 buf->st_mode = S_IFLNK;
492 }
493 buf->st_mode |= S_IREAD;
494 if (!(findbuf.dwFileAttributes & FILE_ATTRIBUTE_READONLY))
495 buf->st_mode |= S_IWRITE;
496 }
497 FindClose(handle);
498 }
499 }
5411bdc4
MSO
500 return 0;
501 }
85faec9d
KB
502 switch (GetLastError()) {
503 case ERROR_ACCESS_DENIED:
504 case ERROR_SHARING_VIOLATION:
505 case ERROR_LOCK_VIOLATION:
506 case ERROR_SHARING_BUFFER_EXCEEDED:
507 errno = EACCES;
508 break;
509 case ERROR_BUFFER_OVERFLOW:
510 errno = ENAMETOOLONG;
511 break;
512 case ERROR_NOT_ENOUGH_MEMORY:
513 errno = ENOMEM;
514 break;
515 default:
516 errno = ENOENT;
517 break;
518 }
5411bdc4
MSO
519 return -1;
520}
521
522/* We provide our own lstat/fstat functions, since the provided
523 * lstat/fstat functions are so slow. These stat functions are
524 * tailored for Git's usage (read: fast), and are not meant to be
525 * complete. Note that Git stat()s are redirected to mingw_lstat()
526 * too, since Windows doesn't really handle symlinks that well.
527 */
9b9784ca 528static int do_stat_internal(int follow, const char *file_name, struct stat *buf)
5411bdc4
MSO
529{
530 int namelen;
58aa3d2a 531 char alt_name[PATH_MAX];
5411bdc4 532
9b9784ca 533 if (!do_lstat(follow, file_name, buf))
5411bdc4
MSO
534 return 0;
535
536 /* if file_name ended in a '/', Windows returned ENOENT;
537 * try again without trailing slashes
538 */
539 if (errno != ENOENT)
540 return -1;
541
542 namelen = strlen(file_name);
543 if (namelen && file_name[namelen-1] != '/')
544 return -1;
545 while (namelen && file_name[namelen-1] == '/')
546 --namelen;
547 if (!namelen || namelen >= PATH_MAX)
548 return -1;
549
550 memcpy(alt_name, file_name, namelen);
551 alt_name[namelen] = 0;
9b9784ca
PT
552 return do_lstat(follow, alt_name, buf);
553}
554
555int mingw_lstat(const char *file_name, struct stat *buf)
556{
557 return do_stat_internal(0, file_name, buf);
558}
559int mingw_stat(const char *file_name, struct stat *buf)
560{
561 return do_stat_internal(1, file_name, buf);
5411bdc4
MSO
562}
563
180964f0 564int mingw_fstat(int fd, struct stat *buf)
5411bdc4
MSO
565{
566 HANDLE fh = (HANDLE)_get_osfhandle(fd);
567 BY_HANDLE_FILE_INFORMATION fdata;
568
569 if (fh == INVALID_HANDLE_VALUE) {
570 errno = EBADF;
571 return -1;
572 }
573 /* direct non-file handles to MS's fstat() */
180964f0 574 if (GetFileType(fh) != FILE_TYPE_DISK)
1d4e4cd4 575 return _fstati64(fd, buf);
5411bdc4
MSO
576
577 if (GetFileInformationByHandle(fh, &fdata)) {
5411bdc4
MSO
578 buf->st_ino = 0;
579 buf->st_gid = 0;
580 buf->st_uid = 0;
180964f0 581 buf->st_nlink = 1;
444dc903 582 buf->st_mode = file_attr_to_st_mode(fdata.dwFileAttributes);
1d4e4cd4
JS
583 buf->st_size = fdata.nFileSizeLow |
584 (((off_t)fdata.nFileSizeHigh)<<32);
8252df62 585 buf->st_dev = buf->st_rdev = 0; /* not used by Git */
5411bdc4
MSO
586 buf->st_atime = filetime_to_time_t(&(fdata.ftLastAccessTime));
587 buf->st_mtime = filetime_to_time_t(&(fdata.ftLastWriteTime));
588 buf->st_ctime = filetime_to_time_t(&(fdata.ftCreationTime));
589 return 0;
590 }
591 errno = EBADF;
592 return -1;
593}
594
7c0ffa1c
JS
595static inline void time_t_to_filetime(time_t t, FILETIME *ft)
596{
597 long long winTime = t * 10000000LL + 116444736000000000LL;
598 ft->dwLowDateTime = winTime;
599 ft->dwHighDateTime = winTime >> 32;
600}
601
602int mingw_utime (const char *file_name, const struct utimbuf *times)
603{
604 FILETIME mft, aft;
605 int fh, rc;
85faec9d
KB
606 DWORD attrs;
607 wchar_t wfilename[MAX_PATH];
608 if (xutftowcs_path(wfilename, file_name) < 0)
609 return -1;
7c0ffa1c
JS
610
611 /* must have write permission */
85faec9d 612 attrs = GetFileAttributesW(wfilename);
852f098c
JS
613 if (attrs != INVALID_FILE_ATTRIBUTES &&
614 (attrs & FILE_ATTRIBUTE_READONLY)) {
615 /* ignore errors here; open() will report them */
85faec9d 616 SetFileAttributesW(wfilename, attrs & ~FILE_ATTRIBUTE_READONLY);
852f098c
JS
617 }
618
85faec9d 619 if ((fh = _wopen(wfilename, O_RDWR | O_BINARY)) < 0) {
852f098c
JS
620 rc = -1;
621 goto revert_attrs;
622 }
7c0ffa1c 623
ded2d476
SG
624 if (times) {
625 time_t_to_filetime(times->modtime, &mft);
626 time_t_to_filetime(times->actime, &aft);
627 } else {
628 GetSystemTimeAsFileTime(&mft);
629 aft = mft;
630 }
7c0ffa1c
JS
631 if (!SetFileTime((HANDLE)_get_osfhandle(fh), NULL, &aft, &mft)) {
632 errno = EINVAL;
633 rc = -1;
634 } else
635 rc = 0;
636 close(fh);
852f098c
JS
637
638revert_attrs:
639 if (attrs != INVALID_FILE_ATTRIBUTES &&
640 (attrs & FILE_ATTRIBUTE_READONLY)) {
641 /* ignore errors again */
85faec9d 642 SetFileAttributesW(wfilename, attrs);
852f098c 643 }
7c0ffa1c
JS
644 return rc;
645}
646
f4626df5
JS
647unsigned int sleep (unsigned int seconds)
648{
649 Sleep(seconds*1000);
650 return 0;
651}
652
85faec9d
KB
653char *mingw_mktemp(char *template)
654{
655 wchar_t wtemplate[MAX_PATH];
656 if (xutftowcs_path(wtemplate, template) < 0)
657 return NULL;
658 if (!_wmktemp(wtemplate))
659 return NULL;
660 if (xwcstoutf(template, wtemplate, strlen(template) + 1) < 0)
661 return NULL;
662 return template;
663}
664
f4626df5
JS
665int mkstemp(char *template)
666{
667 char *filename = mktemp(template);
668 if (filename == NULL)
669 return -1;
670 return open(filename, O_RDWR | O_CREAT, 0600);
671}
672
673int gettimeofday(struct timeval *tv, void *tz)
674{
a6d15bc3
JS
675 FILETIME ft;
676 long long hnsec;
677
678 GetSystemTimeAsFileTime(&ft);
679 hnsec = filetime_to_hnsec(&ft);
680 tv->tv_sec = hnsec / 10000000;
681 tv->tv_usec = (hnsec % 10000000) / 10;
a42a0c2e 682 return 0;
f4626df5
JS
683}
684
897bb8cb
JS
685int pipe(int filedes[2])
686{
3e34d665 687 HANDLE h[2];
897bb8cb 688
3e34d665
JS
689 /* this creates non-inheritable handles */
690 if (!CreatePipe(&h[0], &h[1], NULL, 8192)) {
691 errno = err_win_to_posix(GetLastError());
897bb8cb
JS
692 return -1;
693 }
3e34d665
JS
694 filedes[0] = _open_osfhandle((int)h[0], O_NOINHERIT);
695 if (filedes[0] < 0) {
897bb8cb
JS
696 CloseHandle(h[0]);
697 CloseHandle(h[1]);
698 return -1;
699 }
3e34d665 700 filedes[1] = _open_osfhandle((int)h[1], O_NOINHERIT);
c3cb7b6f 701 if (filedes[1] < 0) {
897bb8cb 702 close(filedes[0]);
897bb8cb
JS
703 CloseHandle(h[1]);
704 return -1;
705 }
897bb8cb
JS
706 return 0;
707}
708
f4626df5
JS
709struct tm *gmtime_r(const time_t *timep, struct tm *result)
710{
711 /* gmtime() in MSVCRT.DLL is thread-safe, but not reentrant */
712 memcpy(result, gmtime(timep), sizeof(struct tm));
713 return result;
714}
715
716struct tm *localtime_r(const time_t *timep, struct tm *result)
717{
718 /* localtime() in MSVCRT.DLL is thread-safe, but not reentrant */
719 memcpy(result, localtime(timep), sizeof(struct tm));
720 return result;
721}
722
25fe217b
JS
723char *mingw_getcwd(char *pointer, int len)
724{
725 int i;
85faec9d
KB
726 wchar_t wpointer[MAX_PATH];
727 if (!_wgetcwd(wpointer, ARRAY_SIZE(wpointer)))
728 return NULL;
729 if (xwcstoutf(pointer, wpointer, len) < 0)
730 return NULL;
25fe217b
JS
731 for (i = 0; pointer[i]; i++)
732 if (pointer[i] == '\\')
733 pointer[i] = '/';
85faec9d 734 return pointer;
25fe217b
JS
735}
736
7e5d7768
JS
737/*
738 * See http://msdn2.microsoft.com/en-us/library/17w5ykft(vs.71).aspx
739 * (Parsing C++ Command-Line Arguments)
740 */
741static const char *quote_arg(const char *arg)
742{
743 /* count chars to quote */
744 int len = 0, n = 0;
745 int force_quotes = 0;
746 char *q, *d;
747 const char *p = arg;
748 if (!*p) force_quotes = 1;
749 while (*p) {
3aea1a5a 750 if (isspace(*p) || *p == '*' || *p == '?' || *p == '{' || *p == '\'')
7e5d7768
JS
751 force_quotes = 1;
752 else if (*p == '"')
753 n++;
754 else if (*p == '\\') {
755 int count = 0;
756 while (*p == '\\') {
757 count++;
758 p++;
759 len++;
760 }
761 if (*p == '"')
762 n += count*2 + 1;
763 continue;
764 }
765 len++;
766 p++;
767 }
768 if (!force_quotes && n == 0)
769 return arg;
770
771 /* insert \ where necessary */
772 d = q = xmalloc(len+n+3);
773 *d++ = '"';
774 while (*arg) {
775 if (*arg == '"')
776 *d++ = '\\';
777 else if (*arg == '\\') {
778 int count = 0;
779 while (*arg == '\\') {
780 count++;
781 *d++ = *arg++;
782 }
783 if (*arg == '"') {
784 while (count-- > 0)
785 *d++ = '\\';
786 *d++ = '\\';
787 }
788 }
789 *d++ = *arg++;
790 }
791 *d++ = '"';
792 *d++ = 0;
793 return q;
794}
795
f1a4dfb8
JS
796static const char *parse_interpreter(const char *cmd)
797{
798 static char buf[100];
799 char *p, *opt;
800 int n, fd;
801
802 /* don't even try a .exe */
803 n = strlen(cmd);
804 if (n >= 4 && !strcasecmp(cmd+n-4, ".exe"))
805 return NULL;
806
807 fd = open(cmd, O_RDONLY);
808 if (fd < 0)
809 return NULL;
810 n = read(fd, buf, sizeof(buf)-1);
811 close(fd);
812 if (n < 4) /* at least '#!/x' and not error */
813 return NULL;
814
815 if (buf[0] != '#' || buf[1] != '!')
816 return NULL;
817 buf[n] = '\0';
bedc4279
PH
818 p = buf + strcspn(buf, "\r\n");
819 if (!*p)
f1a4dfb8
JS
820 return NULL;
821
822 *p = '\0';
823 if (!(p = strrchr(buf+2, '/')) && !(p = strrchr(buf+2, '\\')))
824 return NULL;
825 /* strip options */
826 if ((opt = strchr(p+1, ' ')))
827 *opt = '\0';
828 return p+1;
829}
830
831/*
832 * Splits the PATH into parts.
833 */
834static char **get_path_split(void)
835{
06bc4b79 836 char *p, **path, *envpath = mingw_getenv("PATH");
f1a4dfb8
JS
837 int i, n = 0;
838
839 if (!envpath || !*envpath)
840 return NULL;
841
842 envpath = xstrdup(envpath);
843 p = envpath;
844 while (p) {
845 char *dir = p;
846 p = strchr(p, ';');
847 if (p) *p++ = '\0';
848 if (*dir) { /* not earlier, catches series of ; */
849 ++n;
850 }
851 }
852 if (!n)
853 return NULL;
854
b32fa95f 855 ALLOC_ARRAY(path, n + 1);
f1a4dfb8
JS
856 p = envpath;
857 i = 0;
858 do {
859 if (*p)
860 path[i++] = xstrdup(p);
861 p = p+strlen(p)+1;
862 } while (i < n);
863 path[i] = NULL;
864
865 free(envpath);
866
867 return path;
868}
869
870static void free_path_split(char **path)
871{
0d30ad71
FL
872 char **p = path;
873
f1a4dfb8
JS
874 if (!path)
875 return;
876
f1a4dfb8
JS
877 while (*p)
878 free(*p++);
879 free(path);
880}
881
882/*
883 * exe_only means that we only want to detect .exe files, but not scripts
884 * (which do not have an extension)
885 */
886static char *lookup_prog(const char *dir, const char *cmd, int isexe, int exe_only)
887{
888 char path[MAX_PATH];
889 snprintf(path, sizeof(path), "%s/%s.exe", dir, cmd);
890
891 if (!isexe && access(path, F_OK) == 0)
892 return xstrdup(path);
893 path[strlen(path)-4] = '\0';
894 if ((!exe_only || isexe) && access(path, F_OK) == 0)
fe77b695
ER
895 if (!(GetFileAttributes(path) & FILE_ATTRIBUTE_DIRECTORY))
896 return xstrdup(path);
f1a4dfb8
JS
897 return NULL;
898}
899
900/*
22e5e58a 901 * Determines the absolute path of cmd using the split path in path.
f1a4dfb8
JS
902 * If cmd contains a slash or backslash, no lookup is performed.
903 */
904static char *path_lookup(const char *cmd, char **path, int exe_only)
905{
906 char *prog = NULL;
907 int len = strlen(cmd);
908 int isexe = len >= 4 && !strcasecmp(cmd+len-4, ".exe");
909
910 if (strchr(cmd, '/') || strchr(cmd, '\\'))
911 prog = xstrdup(cmd);
912
913 while (!prog && *path)
914 prog = lookup_prog(*path++, cmd, isexe, exe_only);
915
916 return prog;
917}
918
f279242d
KB
919static int do_putenv(char **env, const char *name, int size, int free_old);
920
921/* used number of elements of environ array, including terminating NULL */
922static int environ_size = 0;
923/* allocated size of environ array, in bytes */
924static int environ_alloc = 0;
77734da2 925
df0e998c 926/*
77734da2
KB
927 * Create environment block suitable for CreateProcess. Merges current
928 * process environment and the supplied environment changes.
df0e998c 929 */
77734da2 930static wchar_t *make_environment_block(char **deltaenv)
7e5d7768 931{
df0e998c 932 wchar_t *wenvblk = NULL;
f279242d
KB
933 char **tmpenv;
934 int i = 0, size = environ_size, wenvsz = 0, wenvpos = 0;
df0e998c 935
f279242d
KB
936 while (deltaenv && deltaenv[i])
937 i++;
df0e998c 938
f279242d 939 /* copy the environment, leaving space for changes */
b32fa95f 940 ALLOC_ARRAY(tmpenv, size + i);
f279242d 941 memcpy(tmpenv, environ, size * sizeof(char*));
77734da2
KB
942
943 /* merge supplied environment changes into the temporary environment */
f279242d
KB
944 for (i = 0; deltaenv && deltaenv[i]; i++)
945 size = do_putenv(tmpenv, deltaenv[i], size, 0);
77734da2 946
df0e998c 947 /* create environment block from temporary environment */
f279242d
KB
948 for (i = 0; tmpenv[i]; i++) {
949 size = 2 * strlen(tmpenv[i]) + 2; /* +2 for final \0 */
df0e998c 950 ALLOC_GROW(wenvblk, (wenvpos + size) * sizeof(wchar_t), wenvsz);
f279242d 951 wenvpos += xutftowcs(&wenvblk[wenvpos], tmpenv[i], size) + 1;
df0e998c
KB
952 }
953 /* add final \0 terminator */
954 wenvblk[wenvpos] = 0;
955 free(tmpenv);
956 return wenvblk;
7e5d7768
JS
957}
958
52de4db5
EFL
959struct pinfo_t {
960 struct pinfo_t *next;
961 pid_t pid;
962 HANDLE proc;
657b35f4
RJ
963};
964static struct pinfo_t *pinfo = NULL;
52de4db5
EFL
965CRITICAL_SECTION pinfo_cs;
966
77734da2 967static pid_t mingw_spawnve_fd(const char *cmd, const char **argv, char **deltaenv,
f9a2743c 968 const char *dir,
75301f90 969 int prepend_cmd, int fhin, int fhout, int fherr)
7e5d7768 970{
99c3c76d 971 STARTUPINFOW si;
7e5d7768 972 PROCESS_INFORMATION pi;
7eb2619c
KB
973 struct strbuf args;
974 wchar_t wcmd[MAX_PATH], wdir[MAX_PATH], *wargs, *wenvblk = NULL;
975 unsigned flags = CREATE_UNICODE_ENVIRONMENT;
7e5d7768
JS
976 BOOL ret;
977
978 /* Determine whether or not we are associated to a console */
979 HANDLE cons = CreateFile("CONOUT$", GENERIC_WRITE,
980 FILE_SHARE_WRITE, NULL, OPEN_EXISTING,
981 FILE_ATTRIBUTE_NORMAL, NULL);
982 if (cons == INVALID_HANDLE_VALUE) {
983 /* There is no console associated with this process.
984 * Since the child is a console process, Windows
985 * would normally create a console window. But
986 * since we'll be redirecting std streams, we do
987 * not need the console.
19fb896f
AG
988 * It is necessary to use DETACHED_PROCESS
989 * instead of CREATE_NO_WINDOW to make ssh
990 * recognize that it has no console.
7e5d7768 991 */
7eb2619c 992 flags |= DETACHED_PROCESS;
7e5d7768
JS
993 } else {
994 /* There is already a console. If we specified
19fb896f 995 * DETACHED_PROCESS here, too, Windows would
7e5d7768 996 * disassociate the child from the console.
19fb896f 997 * The same is true for CREATE_NO_WINDOW.
7e5d7768
JS
998 * Go figure!
999 */
7e5d7768
JS
1000 CloseHandle(cons);
1001 }
1002 memset(&si, 0, sizeof(si));
1003 si.cb = sizeof(si);
1004 si.dwFlags = STARTF_USESTDHANDLES;
eac14f89
KB
1005 si.hStdInput = winansi_get_osfhandle(fhin);
1006 si.hStdOutput = winansi_get_osfhandle(fhout);
1007 si.hStdError = winansi_get_osfhandle(fherr);
7e5d7768 1008
99c3c76d
KB
1009 if (xutftowcs_path(wcmd, cmd) < 0)
1010 return -1;
1011 if (dir && xutftowcs_path(wdir, dir) < 0)
1012 return -1;
1013
7e5d7768
JS
1014 /* concatenate argv, quoting args as we go */
1015 strbuf_init(&args, 0);
1016 if (prepend_cmd) {
1017 char *quoted = (char *)quote_arg(cmd);
1018 strbuf_addstr(&args, quoted);
1019 if (quoted != cmd)
1020 free(quoted);
1021 }
1022 for (; *argv; argv++) {
1023 char *quoted = (char *)quote_arg(*argv);
1024 if (*args.buf)
1025 strbuf_addch(&args, ' ');
1026 strbuf_addstr(&args, quoted);
1027 if (quoted != *argv)
1028 free(quoted);
1029 }
1030
99c3c76d
KB
1031 wargs = xmalloc((2 * args.len + 1) * sizeof(wchar_t));
1032 xutftowcs(wargs, args.buf, 2 * args.len + 1);
1033 strbuf_release(&args);
1034
77734da2 1035 wenvblk = make_environment_block(deltaenv);
7e5d7768
JS
1036
1037 memset(&pi, 0, sizeof(pi));
99c3c76d 1038 ret = CreateProcessW(wcmd, wargs, NULL, NULL, TRUE, flags,
7eb2619c 1039 wenvblk, dir ? wdir : NULL, &si, &pi);
7e5d7768 1040
7eb2619c 1041 free(wenvblk);
99c3c76d 1042 free(wargs);
7e5d7768
JS
1043
1044 if (!ret) {
1045 errno = ENOENT;
1046 return -1;
1047 }
1048 CloseHandle(pi.hThread);
52de4db5
EFL
1049
1050 /*
1051 * The process ID is the human-readable identifier of the process
1052 * that we want to present in log and error messages. The handle
1053 * is not useful for this purpose. But we cannot close it, either,
1054 * because it is not possible to turn a process ID into a process
1055 * handle after the process terminated.
1056 * Keep the handle in a list for waitpid.
1057 */
1058 EnterCriticalSection(&pinfo_cs);
1059 {
1060 struct pinfo_t *info = xmalloc(sizeof(struct pinfo_t));
1061 info->pid = pi.dwProcessId;
1062 info->proc = pi.hProcess;
1063 info->next = pinfo;
1064 pinfo = info;
1065 }
1066 LeaveCriticalSection(&pinfo_cs);
1067
1068 return (pid_t)pi.dwProcessId;
7e5d7768
JS
1069}
1070
3e66e47b 1071static pid_t mingw_spawnv(const char *cmd, const char **argv, int prepend_cmd)
75301f90 1072{
77734da2 1073 return mingw_spawnve_fd(cmd, argv, NULL, NULL, prepend_cmd, 0, 1, 2);
75301f90
JS
1074}
1075
77734da2 1076pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **deltaenv,
f9a2743c 1077 const char *dir,
75301f90 1078 int fhin, int fhout, int fherr)
7e5d7768
JS
1079{
1080 pid_t pid;
1081 char **path = get_path_split();
1082 char *prog = path_lookup(cmd, path, 0);
1083
1084 if (!prog) {
1085 errno = ENOENT;
1086 pid = -1;
1087 }
1088 else {
1089 const char *interpr = parse_interpreter(prog);
1090
1091 if (interpr) {
1092 const char *argv0 = argv[0];
1093 char *iprog = path_lookup(interpr, path, 1);
1094 argv[0] = prog;
1095 if (!iprog) {
1096 errno = ENOENT;
1097 pid = -1;
1098 }
1099 else {
77734da2 1100 pid = mingw_spawnve_fd(iprog, argv, deltaenv, dir, 1,
75301f90 1101 fhin, fhout, fherr);
7e5d7768
JS
1102 free(iprog);
1103 }
1104 argv[0] = argv0;
1105 }
1106 else
77734da2 1107 pid = mingw_spawnve_fd(prog, argv, deltaenv, dir, 0,
75301f90 1108 fhin, fhout, fherr);
7e5d7768
JS
1109 free(prog);
1110 }
1111 free_path_split(path);
1112 return pid;
1113}
1114
3e66e47b 1115static int try_shell_exec(const char *cmd, char *const *argv)
f1a4dfb8
JS
1116{
1117 const char *interpr = parse_interpreter(cmd);
1118 char **path;
1119 char *prog;
1120 int pid = 0;
1121
1122 if (!interpr)
1123 return 0;
1124 path = get_path_split();
1125 prog = path_lookup(interpr, path, 1);
1126 if (prog) {
1127 int argc = 0;
1128 const char **argv2;
1129 while (argv[argc]) argc++;
b32fa95f 1130 ALLOC_ARRAY(argv2, argc + 1);
7e5d7768
JS
1131 argv2[0] = (char *)cmd; /* full path to the script file */
1132 memcpy(&argv2[1], &argv[1], sizeof(*argv) * argc);
3e66e47b 1133 pid = mingw_spawnv(prog, argv2, 1);
f1a4dfb8
JS
1134 if (pid >= 0) {
1135 int status;
1136 if (waitpid(pid, &status, 0) < 0)
1137 status = 255;
1138 exit(status);
1139 }
1140 pid = 1; /* indicate that we tried but failed */
1141 free(prog);
1142 free(argv2);
1143 }
1144 free_path_split(path);
1145 return pid;
1146}
1147
3e66e47b 1148int mingw_execv(const char *cmd, char *const *argv)
f1a4dfb8
JS
1149{
1150 /* check if git_command is a shell script */
3e66e47b 1151 if (!try_shell_exec(cmd, argv)) {
f1a4dfb8
JS
1152 int pid, status;
1153
3e66e47b 1154 pid = mingw_spawnv(cmd, (const char **)argv, 0);
f1a4dfb8 1155 if (pid < 0)
570f1e6e 1156 return -1;
f1a4dfb8
JS
1157 if (waitpid(pid, &status, 0) < 0)
1158 status = 255;
1159 exit(status);
1160 }
570f1e6e 1161 return -1;
f1a4dfb8
JS
1162}
1163
1696d723 1164int mingw_execvp(const char *cmd, char *const *argv)
f1a4dfb8
JS
1165{
1166 char **path = get_path_split();
1167 char *prog = path_lookup(cmd, path, 0);
1168
1169 if (prog) {
3e66e47b 1170 mingw_execv(prog, argv);
f1a4dfb8
JS
1171 free(prog);
1172 } else
1173 errno = ENOENT;
1174
1175 free_path_split(path);
1696d723 1176 return -1;
f1a4dfb8
JS
1177}
1178
82fc07b7
EFL
1179int mingw_kill(pid_t pid, int sig)
1180{
1181 if (pid > 0 && sig == SIGTERM) {
1182 HANDLE h = OpenProcess(PROCESS_TERMINATE, FALSE, pid);
1183
1184 if (TerminateProcess(h, -1)) {
1185 CloseHandle(h);
1186 return 0;
1187 }
1188
1189 errno = err_win_to_posix(GetLastError());
1190 CloseHandle(h);
1191 return -1;
64a99eb4
NTND
1192 } else if (pid > 0 && sig == 0) {
1193 HANDLE h = OpenProcess(PROCESS_QUERY_INFORMATION, FALSE, pid);
1194 if (h) {
1195 CloseHandle(h);
1196 return 0;
1197 }
82fc07b7
EFL
1198 }
1199
1200 errno = EINVAL;
1201 return -1;
1202}
1203
343ff06d
KB
1204/*
1205 * Compare environment entries by key (i.e. stopping at '=' or '\0').
1206 */
1207static int compareenv(const void *v1, const void *v2)
1208{
1209 const char *e1 = *(const char**)v1;
1210 const char *e2 = *(const char**)v2;
1211
1212 for (;;) {
1213 int c1 = *e1++;
1214 int c2 = *e2++;
1215 c1 = (c1 == '=') ? 0 : tolower(c1);
1216 c2 = (c2 == '=') ? 0 : tolower(c2);
1217 if (c1 > c2)
1218 return 1;
1219 if (c1 < c2)
1220 return -1;
1221 if (c1 == 0)
1222 return 0;
1223 }
ba26f296
JS
1224}
1225
343ff06d 1226static int bsearchenv(char **env, const char *name, size_t size)
ba26f296 1227{
343ff06d
KB
1228 unsigned low = 0, high = size;
1229 while (low < high) {
1230 unsigned mid = low + ((high - low) >> 1);
1231 int cmp = compareenv(&env[mid], &name);
1232 if (cmp < 0)
1233 low = mid + 1;
1234 else if (cmp > 0)
1235 high = mid;
1236 else
1237 return mid;
ba26f296 1238 }
343ff06d 1239 return ~low; /* not found, return 1's complement of insert position */
ba26f296
JS
1240}
1241
1242/*
1243 * If name contains '=', then sets the variable, otherwise it unsets it
f279242d
KB
1244 * Size includes the terminating NULL. Env must have room for size + 1 entries
1245 * (in case of insert). Returns the new size. Optionally frees removed entries.
ba26f296 1246 */
f279242d 1247static int do_putenv(char **env, const char *name, int size, int free_old)
ba26f296 1248{
343ff06d 1249 int i = bsearchenv(env, name, size - 1);
ba26f296 1250
343ff06d
KB
1251 /* optionally free removed / replaced entry */
1252 if (i >= 0 && free_old)
ba26f296 1253 free(env[i]);
ba26f296 1254
343ff06d
KB
1255 if (strchr(name, '=')) {
1256 /* if new value ('key=value') is specified, insert or replace entry */
1257 if (i < 0) {
1258 i = ~i;
1259 memmove(&env[i + 1], &env[i], (size - i) * sizeof(char*));
f279242d 1260 size++;
ba26f296 1261 }
343ff06d
KB
1262 env[i] = (char*) name;
1263 } else if (i >= 0) {
1264 /* otherwise ('key') remove existing entry */
1265 size--;
1266 memmove(&env[i], &env[i + 1], (size - i) * sizeof(char*));
ba26f296 1267 }
f279242d 1268 return size;
2affea41
JS
1269}
1270
6dc71543 1271char *mingw_getenv(const char *name)
df599e96 1272{
343ff06d
KB
1273 char *value;
1274 int pos = bsearchenv(environ, name, environ_size - 1);
1275 if (pos < 0)
1276 return NULL;
1277 value = strchr(environ[pos], '=');
1278 return value ? &value[1] : NULL;
df599e96
JS
1279}
1280
b729f98f 1281int mingw_putenv(const char *namevalue)
06bc4b79 1282{
f279242d
KB
1283 ALLOC_GROW(environ, (environ_size + 1) * sizeof(char*), environ_alloc);
1284 environ_size = do_putenv(environ, namevalue, environ_size, 1);
b729f98f 1285 return 0;
06bc4b79
JS
1286}
1287
fe3b2b7b
MS
1288/*
1289 * Note, this isn't a complete replacement for getaddrinfo. It assumes
0353a0c4 1290 * that service contains a numerical port, or that it is null. It
fe3b2b7b
MS
1291 * does a simple search using gethostbyname, and returns one IPv4 host
1292 * if one was found.
1293 */
1294static int WSAAPI getaddrinfo_stub(const char *node, const char *service,
1295 const struct addrinfo *hints,
1296 struct addrinfo **res)
1297{
cbefd2d6 1298 struct hostent *h = NULL;
fe3b2b7b
MS
1299 struct addrinfo *ai;
1300 struct sockaddr_in *sin;
1301
cbefd2d6
MS
1302 if (node) {
1303 h = gethostbyname(node);
1304 if (!h)
1305 return WSAGetLastError();
1306 }
fe3b2b7b
MS
1307
1308 ai = xmalloc(sizeof(struct addrinfo));
1309 *res = ai;
1310 ai->ai_flags = 0;
1311 ai->ai_family = AF_INET;
cbefd2d6
MS
1312 ai->ai_socktype = hints ? hints->ai_socktype : 0;
1313 switch (ai->ai_socktype) {
fe3b2b7b
MS
1314 case SOCK_STREAM:
1315 ai->ai_protocol = IPPROTO_TCP;
1316 break;
1317 case SOCK_DGRAM:
1318 ai->ai_protocol = IPPROTO_UDP;
1319 break;
1320 default:
1321 ai->ai_protocol = 0;
1322 break;
1323 }
1324 ai->ai_addrlen = sizeof(struct sockaddr_in);
cbefd2d6 1325 if (hints && (hints->ai_flags & AI_CANONNAME))
040a6551 1326 ai->ai_canonname = h ? xstrdup(h->h_name) : NULL;
cbefd2d6
MS
1327 else
1328 ai->ai_canonname = NULL;
fe3b2b7b 1329
51a60f5b 1330 sin = xcalloc(1, ai->ai_addrlen);
fe3b2b7b 1331 sin->sin_family = AF_INET;
cbefd2d6
MS
1332 /* Note: getaddrinfo is supposed to allow service to be a string,
1333 * which should be looked up using getservbyname. This is
1334 * currently not implemented */
fe3b2b7b
MS
1335 if (service)
1336 sin->sin_port = htons(atoi(service));
cbefd2d6
MS
1337 if (h)
1338 sin->sin_addr = *(struct in_addr *)h->h_addr;
1339 else if (hints && (hints->ai_flags & AI_PASSIVE))
1340 sin->sin_addr.s_addr = INADDR_ANY;
1341 else
1342 sin->sin_addr.s_addr = INADDR_LOOPBACK;
fe3b2b7b 1343 ai->ai_addr = (struct sockaddr *)sin;
657b35f4 1344 ai->ai_next = NULL;
fe3b2b7b
MS
1345 return 0;
1346}
1347
1348static void WSAAPI freeaddrinfo_stub(struct addrinfo *res)
1349{
1350 free(res->ai_canonname);
1351 free(res->ai_addr);
1352 free(res);
1353}
1354
1355static int WSAAPI getnameinfo_stub(const struct sockaddr *sa, socklen_t salen,
1356 char *host, DWORD hostlen,
1357 char *serv, DWORD servlen, int flags)
1358{
1359 const struct sockaddr_in *sin = (const struct sockaddr_in *)sa;
1360 if (sa->sa_family != AF_INET)
1361 return EAI_FAMILY;
1362 if (!host && !serv)
1363 return EAI_NONAME;
1364
1365 if (host && hostlen > 0) {
1366 struct hostent *ent = NULL;
1367 if (!(flags & NI_NUMERICHOST))
1368 ent = gethostbyaddr((const char *)&sin->sin_addr,
1369 sizeof(sin->sin_addr), AF_INET);
1370
1371 if (ent)
1372 snprintf(host, hostlen, "%s", ent->h_name);
1373 else if (flags & NI_NAMEREQD)
1374 return EAI_NONAME;
1375 else
1376 snprintf(host, hostlen, "%s", inet_ntoa(sin->sin_addr));
1377 }
1378
1379 if (serv && servlen > 0) {
1380 struct servent *ent = NULL;
1381 if (!(flags & NI_NUMERICSERV))
1382 ent = getservbyport(sin->sin_port,
1383 flags & NI_DGRAM ? "udp" : "tcp");
1384
1385 if (ent)
1386 snprintf(serv, servlen, "%s", ent->s_name);
1387 else
1388 snprintf(serv, servlen, "%d", ntohs(sin->sin_port));
1389 }
1390
1391 return 0;
1392}
1393
1394static HMODULE ipv6_dll = NULL;
1395static void (WSAAPI *ipv6_freeaddrinfo)(struct addrinfo *res);
1396static int (WSAAPI *ipv6_getaddrinfo)(const char *node, const char *service,
1397 const struct addrinfo *hints,
1398 struct addrinfo **res);
1399static int (WSAAPI *ipv6_getnameinfo)(const struct sockaddr *sa, socklen_t salen,
1400 char *host, DWORD hostlen,
1401 char *serv, DWORD servlen, int flags);
1402/*
1403 * gai_strerror is an inline function in the ws2tcpip.h header, so we
1404 * don't need to try to load that one dynamically.
1405 */
1406
1407static void socket_cleanup(void)
1408{
1409 WSACleanup();
1410 if (ipv6_dll)
1411 FreeLibrary(ipv6_dll);
1412 ipv6_dll = NULL;
1413 ipv6_freeaddrinfo = freeaddrinfo_stub;
1414 ipv6_getaddrinfo = getaddrinfo_stub;
1415 ipv6_getnameinfo = getnameinfo_stub;
1416}
1417
b7cc9f82 1418static void ensure_socket_initialization(void)
746fb857
JS
1419{
1420 WSADATA wsa;
b7cc9f82 1421 static int initialized = 0;
fe3b2b7b
MS
1422 const char *libraries[] = { "ws2_32.dll", "wship6.dll", NULL };
1423 const char **name;
b7cc9f82
MS
1424
1425 if (initialized)
1426 return;
746fb857
JS
1427
1428 if (WSAStartup(MAKEWORD(2,2), &wsa))
1429 die("unable to initialize winsock subsystem, error %d",
1430 WSAGetLastError());
fe3b2b7b
MS
1431
1432 for (name = libraries; *name; name++) {
1433 ipv6_dll = LoadLibrary(*name);
1434 if (!ipv6_dll)
1435 continue;
1436
1437 ipv6_freeaddrinfo = (void (WSAAPI *)(struct addrinfo *))
1438 GetProcAddress(ipv6_dll, "freeaddrinfo");
1439 ipv6_getaddrinfo = (int (WSAAPI *)(const char *, const char *,
1440 const struct addrinfo *,
1441 struct addrinfo **))
1442 GetProcAddress(ipv6_dll, "getaddrinfo");
1443 ipv6_getnameinfo = (int (WSAAPI *)(const struct sockaddr *,
1444 socklen_t, char *, DWORD,
1445 char *, DWORD, int))
1446 GetProcAddress(ipv6_dll, "getnameinfo");
1447 if (!ipv6_freeaddrinfo || !ipv6_getaddrinfo || !ipv6_getnameinfo) {
1448 FreeLibrary(ipv6_dll);
1449 ipv6_dll = NULL;
1450 } else
1451 break;
1452 }
1453 if (!ipv6_freeaddrinfo || !ipv6_getaddrinfo || !ipv6_getnameinfo) {
1454 ipv6_freeaddrinfo = freeaddrinfo_stub;
1455 ipv6_getaddrinfo = getaddrinfo_stub;
1456 ipv6_getnameinfo = getnameinfo_stub;
1457 }
1458
1459 atexit(socket_cleanup);
b7cc9f82
MS
1460 initialized = 1;
1461}
1462
13d24b01
PT
1463#undef gethostname
1464int mingw_gethostname(char *name, int namelen)
1465{
1466 ensure_socket_initialization();
1467 return gethostname(name, namelen);
1468}
1469
b7cc9f82
MS
1470#undef gethostbyname
1471struct hostent *mingw_gethostbyname(const char *host)
1472{
1473 ensure_socket_initialization();
746fb857
JS
1474 return gethostbyname(host);
1475}
1476
fe3b2b7b
MS
1477void mingw_freeaddrinfo(struct addrinfo *res)
1478{
1479 ipv6_freeaddrinfo(res);
1480}
1481
1482int mingw_getaddrinfo(const char *node, const char *service,
1483 const struct addrinfo *hints, struct addrinfo **res)
1484{
1485 ensure_socket_initialization();
1486 return ipv6_getaddrinfo(node, service, hints, res);
1487}
1488
1489int mingw_getnameinfo(const struct sockaddr *sa, socklen_t salen,
1490 char *host, DWORD hostlen, char *serv, DWORD servlen,
1491 int flags)
1492{
1493 ensure_socket_initialization();
1494 return ipv6_getnameinfo(sa, salen, host, hostlen, serv, servlen, flags);
1495}
1496
746fb857
JS
1497int mingw_socket(int domain, int type, int protocol)
1498{
1499 int sockfd;
772991af
MP
1500 SOCKET s;
1501
1502 ensure_socket_initialization();
1503 s = WSASocket(domain, type, protocol, NULL, 0, 0);
746fb857
JS
1504 if (s == INVALID_SOCKET) {
1505 /*
1506 * WSAGetLastError() values are regular BSD error codes
1507 * biased by WSABASEERR.
1508 * However, strerror() does not know about networking
1509 * specific errors, which are values beginning at 38 or so.
1510 * Therefore, we choose to leave the biased error code
1511 * in errno so that _if_ someone looks up the code somewhere,
1512 * then it is at least the number that are usually listed.
1513 */
1514 errno = WSAGetLastError();
1515 return -1;
1516 }
1517 /* convert into a file descriptor */
1518 if ((sockfd = _open_osfhandle(s, O_RDWR|O_BINARY)) < 0) {
1519 closesocket(s);
1520 return error("unable to make a socket file descriptor: %s",
1521 strerror(errno));
1522 }
1523 return sockfd;
1524}
1525
1526#undef connect
1527int mingw_connect(int sockfd, struct sockaddr *sa, size_t sz)
1528{
1529 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
1530 return connect(s, sa, sz);
1531}
1532
772991af
MP
1533#undef bind
1534int mingw_bind(int sockfd, struct sockaddr *sa, size_t sz)
1535{
1536 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
1537 return bind(s, sa, sz);
1538}
1539
1540#undef setsockopt
1541int mingw_setsockopt(int sockfd, int lvl, int optname, void *optval, int optlen)
1542{
1543 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
1544 return setsockopt(s, lvl, optname, (const char*)optval, optlen);
1545}
1546
a7941795
JS
1547#undef shutdown
1548int mingw_shutdown(int sockfd, int how)
1549{
1550 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
1551 return shutdown(s, how);
1552}
1553
772991af
MP
1554#undef listen
1555int mingw_listen(int sockfd, int backlog)
1556{
1557 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
1558 return listen(s, backlog);
1559}
1560
1561#undef accept
1562int mingw_accept(int sockfd1, struct sockaddr *sa, socklen_t *sz)
1563{
1564 int sockfd2;
1565
1566 SOCKET s1 = (SOCKET)_get_osfhandle(sockfd1);
1567 SOCKET s2 = accept(s1, sa, sz);
1568
1569 /* convert into a file descriptor */
1570 if ((sockfd2 = _open_osfhandle(s2, O_RDWR|O_BINARY)) < 0) {
1571 int err = errno;
1572 closesocket(s2);
1573 return error("unable to make a socket file descriptor: %s",
1574 strerror(err));
1575 }
1576 return sockfd2;
1577}
1578
ea9e98c3
JS
1579#undef rename
1580int mingw_rename(const char *pold, const char *pnew)
1581{
6ac6f878
JS
1582 DWORD attrs, gle;
1583 int tries = 0;
85faec9d
KB
1584 wchar_t wpold[MAX_PATH], wpnew[MAX_PATH];
1585 if (xutftowcs_path(wpold, pold) < 0 || xutftowcs_path(wpnew, pnew) < 0)
1586 return -1;
632f7017 1587
ea9e98c3
JS
1588 /*
1589 * Try native rename() first to get errno right.
1590 * It is based on MoveFile(), which cannot overwrite existing files.
1591 */
85faec9d 1592 if (!_wrename(wpold, wpnew))
ea9e98c3
JS
1593 return 0;
1594 if (errno != EEXIST)
1595 return -1;
6ac6f878 1596repeat:
85faec9d 1597 if (MoveFileExW(wpold, wpnew, MOVEFILE_REPLACE_EXISTING))
ea9e98c3
JS
1598 return 0;
1599 /* TODO: translate more errors */
6ac6f878
JS
1600 gle = GetLastError();
1601 if (gle == ERROR_ACCESS_DENIED &&
85faec9d 1602 (attrs = GetFileAttributesW(wpnew)) != INVALID_FILE_ATTRIBUTES) {
632f7017 1603 if (attrs & FILE_ATTRIBUTE_DIRECTORY) {
ea9e98c3
JS
1604 errno = EISDIR;
1605 return -1;
1606 }
632f7017 1607 if ((attrs & FILE_ATTRIBUTE_READONLY) &&
85faec9d
KB
1608 SetFileAttributesW(wpnew, attrs & ~FILE_ATTRIBUTE_READONLY)) {
1609 if (MoveFileExW(wpold, wpnew, MOVEFILE_REPLACE_EXISTING))
632f7017 1610 return 0;
6ac6f878 1611 gle = GetLastError();
632f7017 1612 /* revert file attributes on failure */
85faec9d 1613 SetFileAttributesW(wpnew, attrs);
632f7017 1614 }
ea9e98c3 1615 }
6ac6f878
JS
1616 if (tries < ARRAY_SIZE(delay) && gle == ERROR_ACCESS_DENIED) {
1617 /*
1618 * We assume that some other process had the source or
1619 * destination file open at the wrong moment and retry.
1620 * In order to give the other process a higher chance to
1621 * complete its operation, we give up our time slice now.
1622 * If we have to retry again, we do sleep a bit.
1623 */
1624 Sleep(delay[tries]);
1625 tries++;
1626 goto repeat;
1627 }
c9b78400
HV
1628 if (gle == ERROR_ACCESS_DENIED &&
1629 ask_yes_no_if_possible("Rename from '%s' to '%s' failed. "
1630 "Should I try again?", pold, pnew))
1631 goto repeat;
1632
ea9e98c3
JS
1633 errno = EACCES;
1634 return -1;
1635}
1636
b1b95204
RJ
1637/*
1638 * Note that this doesn't return the actual pagesize, but
1639 * the allocation granularity. If future Windows specific git code
1640 * needs the real getpagesize function, we need to find another solution.
1641 */
1642int mingw_getpagesize(void)
1643{
1644 SYSTEM_INFO si;
1645 GetSystemInfo(&si);
1646 return si.dwAllocationGranularity;
1647}
1648
f4626df5
JS
1649struct passwd *getpwuid(int uid)
1650{
f7597aca 1651 static char user_name[100];
f4626df5 1652 static struct passwd p;
f7597aca
JS
1653
1654 DWORD len = sizeof(user_name);
1655 if (!GetUserName(user_name, &len))
1656 return NULL;
1657 p.pw_name = user_name;
1658 p.pw_gecos = "unknown";
1659 p.pw_dir = NULL;
f4626df5
JS
1660 return &p;
1661}
1662
6072fc31
JS
1663static HANDLE timer_event;
1664static HANDLE timer_thread;
1665static int timer_interval;
1666static int one_shot;
176478a8 1667static sig_handler_t timer_fn = SIG_DFL, sigint_fn = SIG_DFL;
6072fc31
JS
1668
1669/* The timer works like this:
1670 * The thread, ticktack(), is a trivial routine that most of the time
1671 * only waits to receive the signal to terminate. The main thread tells
1672 * the thread to terminate by setting the timer_event to the signalled
1673 * state.
1674 * But ticktack() interrupts the wait state after the timer's interval
1675 * length to call the signal handler.
1676 */
1677
d7fa500f 1678static unsigned __stdcall ticktack(void *dummy)
6072fc31
JS
1679{
1680 while (WaitForSingleObject(timer_event, timer_interval) == WAIT_TIMEOUT) {
176478a8 1681 mingw_raise(SIGALRM);
6072fc31
JS
1682 if (one_shot)
1683 break;
1684 }
1685 return 0;
1686}
1687
1688static int start_timer_thread(void)
1689{
1690 timer_event = CreateEvent(NULL, FALSE, FALSE, NULL);
1691 if (timer_event) {
1692 timer_thread = (HANDLE) _beginthreadex(NULL, 0, ticktack, NULL, 0, NULL);
1693 if (!timer_thread )
1694 return errno = ENOMEM,
1695 error("cannot start timer thread");
1696 } else
1697 return errno = ENOMEM,
1698 error("cannot allocate resources for timer");
1699 return 0;
1700}
1701
1702static void stop_timer_thread(void)
1703{
1704 if (timer_event)
1705 SetEvent(timer_event); /* tell thread to terminate */
1706 if (timer_thread) {
1707 int rc = WaitForSingleObject(timer_thread, 1000);
1708 if (rc == WAIT_TIMEOUT)
1709 error("timer thread did not terminate timely");
1710 else if (rc != WAIT_OBJECT_0)
1711 error("waiting for timer thread failed: %lu",
1712 GetLastError());
1713 CloseHandle(timer_thread);
1714 }
1715 if (timer_event)
1716 CloseHandle(timer_event);
1717 timer_event = NULL;
1718 timer_thread = NULL;
1719}
1720
1721static inline int is_timeval_eq(const struct timeval *i1, const struct timeval *i2)
1722{
1723 return i1->tv_sec == i2->tv_sec && i1->tv_usec == i2->tv_usec;
1724}
1725
f4626df5
JS
1726int setitimer(int type, struct itimerval *in, struct itimerval *out)
1727{
6072fc31
JS
1728 static const struct timeval zero;
1729 static int atexit_done;
1730
1731 if (out != NULL)
1732 return errno = EINVAL,
1733 error("setitimer param 3 != NULL not implemented");
1734 if (!is_timeval_eq(&in->it_interval, &zero) &&
1735 !is_timeval_eq(&in->it_interval, &in->it_value))
1736 return errno = EINVAL,
1737 error("setitimer: it_interval must be zero or eq it_value");
1738
1739 if (timer_thread)
1740 stop_timer_thread();
1741
1742 if (is_timeval_eq(&in->it_value, &zero) &&
1743 is_timeval_eq(&in->it_interval, &zero))
1744 return 0;
1745
1746 timer_interval = in->it_value.tv_sec * 1000 + in->it_value.tv_usec / 1000;
1747 one_shot = is_timeval_eq(&in->it_interval, &zero);
1748 if (!atexit_done) {
1749 atexit(stop_timer_thread);
1750 atexit_done = 1;
1751 }
1752 return start_timer_thread();
f4626df5
JS
1753}
1754
1755int sigaction(int sig, struct sigaction *in, struct sigaction *out)
1756{
6072fc31
JS
1757 if (sig != SIGALRM)
1758 return errno = EINVAL,
1759 error("sigaction only implemented for SIGALRM");
1760 if (out != NULL)
1761 return errno = EINVAL,
1762 error("sigaction: param 3 != NULL not implemented");
1763
1764 timer_fn = in->sa_handler;
1765 return 0;
1766}
1767
1768#undef signal
1769sig_handler_t mingw_signal(int sig, sig_handler_t handler)
1770{
a4540658 1771 sig_handler_t old;
176478a8
EFL
1772
1773 switch (sig) {
1774 case SIGALRM:
a4540658 1775 old = timer_fn;
176478a8
EFL
1776 timer_fn = handler;
1777 break;
1778
1779 case SIGINT:
a4540658 1780 old = sigint_fn;
176478a8
EFL
1781 sigint_fn = handler;
1782 break;
1783
1784 default:
6072fc31 1785 return signal(sig, handler);
176478a8
EFL
1786 }
1787
6072fc31 1788 return old;
f4626df5 1789}
4804aabc 1790
176478a8
EFL
1791#undef raise
1792int mingw_raise(int sig)
1793{
1794 switch (sig) {
1795 case SIGALRM:
1796 if (timer_fn == SIG_DFL) {
1797 if (isatty(STDERR_FILENO))
1798 fputs("Alarm clock\n", stderr);
1799 exit(128 + SIGALRM);
1800 } else if (timer_fn != SIG_IGN)
1801 timer_fn(SIGALRM);
1802 return 0;
1803
1804 case SIGINT:
1805 if (sigint_fn == SIG_DFL)
1806 exit(128 + SIGINT);
1807 else if (sigint_fn != SIG_IGN)
1808 sigint_fn(SIGINT);
1809 return 0;
1810
1811 default:
1812 return raise(sig);
1813 }
1814}
1815
1816
4804aabc
SP
1817static const char *make_backslash_path(const char *path)
1818{
1819 static char buf[PATH_MAX + 1];
1820 char *c;
1821
1822 if (strlcpy(buf, path, PATH_MAX) >= PATH_MAX)
1823 die("Too long path: %.*s", 60, path);
1824
1825 for (c = buf; *c; c++) {
1826 if (*c == '/')
1827 *c = '\\';
1828 }
1829 return buf;
1830}
1831
1832void mingw_open_html(const char *unixpath)
1833{
1834 const char *htmlpath = make_backslash_path(unixpath);
928500e0
JS
1835 typedef HINSTANCE (WINAPI *T)(HWND, const char *,
1836 const char *, const char *, const char *, INT);
1837 T ShellExecute;
1838 HMODULE shell32;
442dada2 1839 int r;
928500e0
JS
1840
1841 shell32 = LoadLibrary("shell32.dll");
1842 if (!shell32)
1843 die("cannot load shell32.dll");
1844 ShellExecute = (T)GetProcAddress(shell32, "ShellExecuteA");
1845 if (!ShellExecute)
1846 die("cannot run browser");
1847
4804aabc 1848 printf("Launching default browser to display HTML ...\n");
442dada2 1849 r = (int)ShellExecute(NULL, "open", htmlpath, NULL, "\\", SW_SHOWNORMAL);
928500e0 1850 FreeLibrary(shell32);
442dada2
PT
1851 /* see the MSDN documentation referring to the result codes here */
1852 if (r <= 32) {
1853 die("failed to launch browser for %.*s", MAX_PATH, unixpath);
1854 }
4804aabc 1855}
7be401e0
PK
1856
1857int link(const char *oldpath, const char *newpath)
1858{
85faec9d 1859 typedef BOOL (WINAPI *T)(LPCWSTR, LPCWSTR, LPSECURITY_ATTRIBUTES);
7be401e0 1860 static T create_hard_link = NULL;
85faec9d
KB
1861 wchar_t woldpath[MAX_PATH], wnewpath[MAX_PATH];
1862 if (xutftowcs_path(woldpath, oldpath) < 0 ||
1863 xutftowcs_path(wnewpath, newpath) < 0)
1864 return -1;
1865
7be401e0
PK
1866 if (!create_hard_link) {
1867 create_hard_link = (T) GetProcAddress(
85faec9d 1868 GetModuleHandle("kernel32.dll"), "CreateHardLinkW");
7be401e0
PK
1869 if (!create_hard_link)
1870 create_hard_link = (T)-1;
1871 }
1872 if (create_hard_link == (T)-1) {
1873 errno = ENOSYS;
1874 return -1;
1875 }
85faec9d 1876 if (!create_hard_link(wnewpath, woldpath, NULL)) {
7be401e0
PK
1877 errno = err_win_to_posix(GetLastError());
1878 return -1;
1879 }
1880 return 0;
1881}
0dbbbc1e 1882
956d86d1 1883pid_t waitpid(pid_t pid, int *status, int options)
52de4db5
EFL
1884{
1885 HANDLE h = OpenProcess(SYNCHRONIZE | PROCESS_QUERY_INFORMATION,
1886 FALSE, pid);
1887 if (!h) {
1888 errno = ECHILD;
1889 return -1;
1890 }
1891
ef7108ca
EFL
1892 if (pid > 0 && options & WNOHANG) {
1893 if (WAIT_OBJECT_0 != WaitForSingleObject(h, 0)) {
1894 CloseHandle(h);
1895 return 0;
1896 }
1897 options &= ~WNOHANG;
1898 }
1899
52de4db5
EFL
1900 if (options == 0) {
1901 struct pinfo_t **ppinfo;
1902 if (WaitForSingleObject(h, INFINITE) != WAIT_OBJECT_0) {
1903 CloseHandle(h);
1904 return 0;
1905 }
1906
1907 if (status)
1908 GetExitCodeProcess(h, (LPDWORD)status);
1909
1910 EnterCriticalSection(&pinfo_cs);
1911
1912 ppinfo = &pinfo;
1913 while (*ppinfo) {
1914 struct pinfo_t *info = *ppinfo;
1915 if (info->pid == pid) {
1916 CloseHandle(info->proc);
1917 *ppinfo = info->next;
1918 free(info);
1919 break;
1920 }
1921 ppinfo = &info->next;
1922 }
1923
1924 LeaveCriticalSection(&pinfo_cs);
1925
1926 CloseHandle(h);
1927 return pid;
1928 }
1929 CloseHandle(h);
1930
1931 errno = EINVAL;
1932 return -1;
1933}
c2369bdf 1934
e7d5ce81
JS
1935int mingw_skip_dos_drive_prefix(char **path)
1936{
1937 int ret = has_dos_drive_prefix(*path);
1938 *path += ret;
1939 return ret;
1940}
1941
c2369bdf
CZ
1942int mingw_offset_1st_component(const char *path)
1943{
2f36eed9 1944 char *pos = (char *)path;
c2369bdf
CZ
1945
1946 /* unc paths */
2f36eed9
JS
1947 if (!skip_dos_drive_prefix(&pos) &&
1948 is_dir_sep(pos[0]) && is_dir_sep(pos[1])) {
c2369bdf 1949 /* skip server name */
2f36eed9 1950 pos = strpbrk(pos + 2, "\\/");
c2369bdf
CZ
1951 if (!pos)
1952 return 0; /* Error: malformed unc path */
1953
1954 do {
1955 pos++;
1956 } while (*pos && !is_dir_sep(*pos));
c2369bdf
CZ
1957 }
1958
2f36eed9 1959 return pos + is_dir_sep(*pos) - path;
c2369bdf 1960}
13f1df43 1961
1c950a59
KB
1962int xutftowcsn(wchar_t *wcs, const char *utfs, size_t wcslen, int utflen)
1963{
1964 int upos = 0, wpos = 0;
1965 const unsigned char *utf = (const unsigned char*) utfs;
1966 if (!utf || !wcs || wcslen < 1) {
1967 errno = EINVAL;
1968 return -1;
1969 }
1970 /* reserve space for \0 */
1971 wcslen--;
1972 if (utflen < 0)
1973 utflen = INT_MAX;
1974
1975 while (upos < utflen) {
1976 int c = utf[upos++] & 0xff;
1977 if (utflen == INT_MAX && c == 0)
1978 break;
1979
1980 if (wpos >= wcslen) {
1981 wcs[wpos] = 0;
1982 errno = ERANGE;
1983 return -1;
1984 }
1985
1986 if (c < 0x80) {
1987 /* ASCII */
1988 wcs[wpos++] = c;
1989 } else if (c >= 0xc2 && c < 0xe0 && upos < utflen &&
1990 (utf[upos] & 0xc0) == 0x80) {
1991 /* 2-byte utf-8 */
1992 c = ((c & 0x1f) << 6);
1993 c |= (utf[upos++] & 0x3f);
1994 wcs[wpos++] = c;
1995 } else if (c >= 0xe0 && c < 0xf0 && upos + 1 < utflen &&
1996 !(c == 0xe0 && utf[upos] < 0xa0) && /* over-long encoding */
1997 (utf[upos] & 0xc0) == 0x80 &&
1998 (utf[upos + 1] & 0xc0) == 0x80) {
1999 /* 3-byte utf-8 */
2000 c = ((c & 0x0f) << 12);
2001 c |= ((utf[upos++] & 0x3f) << 6);
2002 c |= (utf[upos++] & 0x3f);
2003 wcs[wpos++] = c;
2004 } else if (c >= 0xf0 && c < 0xf5 && upos + 2 < utflen &&
2005 wpos + 1 < wcslen &&
2006 !(c == 0xf0 && utf[upos] < 0x90) && /* over-long encoding */
2007 !(c == 0xf4 && utf[upos] >= 0x90) && /* > \u10ffff */
2008 (utf[upos] & 0xc0) == 0x80 &&
2009 (utf[upos + 1] & 0xc0) == 0x80 &&
2010 (utf[upos + 2] & 0xc0) == 0x80) {
2011 /* 4-byte utf-8: convert to \ud8xx \udcxx surrogate pair */
2012 c = ((c & 0x07) << 18);
2013 c |= ((utf[upos++] & 0x3f) << 12);
2014 c |= ((utf[upos++] & 0x3f) << 6);
2015 c |= (utf[upos++] & 0x3f);
2016 c -= 0x10000;
2017 wcs[wpos++] = 0xd800 | (c >> 10);
2018 wcs[wpos++] = 0xdc00 | (c & 0x3ff);
2019 } else if (c >= 0xa0) {
2020 /* invalid utf-8 byte, printable unicode char: convert 1:1 */
2021 wcs[wpos++] = c;
2022 } else {
2023 /* invalid utf-8 byte, non-printable unicode: convert to hex */
2024 static const char *hex = "0123456789abcdef";
2025 wcs[wpos++] = hex[c >> 4];
2026 if (wpos < wcslen)
2027 wcs[wpos++] = hex[c & 0x0f];
2028 }
2029 }
2030 wcs[wpos] = 0;
2031 return wpos;
2032}
2033
2034int xwcstoutf(char *utf, const wchar_t *wcs, size_t utflen)
2035{
2036 if (!wcs || !utf || utflen < 1) {
2037 errno = EINVAL;
2038 return -1;
2039 }
2040 utflen = WideCharToMultiByte(CP_UTF8, 0, wcs, -1, utf, utflen, NULL, NULL);
2041 if (utflen)
2042 return utflen - 1;
2043 errno = ERANGE;
2044 return -1;
2045}
2046
5901dc66
KB
2047/*
2048 * Disable MSVCRT command line wildcard expansion (__getmainargs called from
2049 * mingw startup code, see init.c in mingw runtime).
2050 */
2051int _CRT_glob = 0;
2052
3f046148
KB
2053typedef struct {
2054 int newmode;
2055} _startupinfo;
2056
2057extern int __wgetmainargs(int *argc, wchar_t ***argv, wchar_t ***env, int glob,
2058 _startupinfo *si);
2059
2060static NORETURN void die_startup()
2061{
2062 fputs("fatal: not enough memory for initialization", stderr);
2063 exit(128);
2064}
2065
6f1c189c
KB
2066static void *malloc_startup(size_t size)
2067{
2068 void *result = malloc(size);
2069 if (!result)
2070 die_startup();
2071 return result;
2072}
2073
2074static char *wcstoutfdup_startup(char *buffer, const wchar_t *wcs, size_t len)
2075{
2076 len = xwcstoutf(buffer, wcs, len) + 1;
2077 return memcpy(malloc_startup(len), buffer, len);
2078}
2079
13f1df43
KB
2080void mingw_startup()
2081{
6f1c189c 2082 int i, maxlen, argc;
3f046148
KB
2083 char *buffer;
2084 wchar_t **wenv, **wargv;
2085 _startupinfo si;
2086
2087 /* get wide char arguments and environment */
2088 si.newmode = 0;
2089 if (__wgetmainargs(&argc, &wargv, &wenv, _CRT_glob, &si) < 0)
2090 die_startup();
2091
2092 /* determine size of argv and environ conversion buffer */
2093 maxlen = wcslen(_wpgmptr);
2094 for (i = 1; i < argc; i++)
2095 maxlen = max(maxlen, wcslen(wargv[i]));
b729f98f
KB
2096 for (i = 0; wenv[i]; i++)
2097 maxlen = max(maxlen, wcslen(wenv[i]));
2098
6f1c189c
KB
2099 /*
2100 * nedmalloc can't free CRT memory, allocate resizable environment
2101 * list. Note that xmalloc / xmemdupz etc. call getenv, so we cannot
2102 * use it while initializing the environment itself.
2103 */
f279242d 2104 environ_size = i + 1;
6f1c189c
KB
2105 environ_alloc = alloc_nr(environ_size * sizeof(char*));
2106 environ = malloc_startup(environ_alloc);
3f046148
KB
2107
2108 /* allocate buffer (wchar_t encodes to max 3 UTF-8 bytes) */
2109 maxlen = 3 * maxlen + 1;
6f1c189c 2110 buffer = malloc_startup(maxlen);
3f046148
KB
2111
2112 /* convert command line arguments and environment to UTF-8 */
6f1c189c
KB
2113 __argv[0] = wcstoutfdup_startup(buffer, _wpgmptr, maxlen);
2114 for (i = 1; i < argc; i++)
2115 __argv[i] = wcstoutfdup_startup(buffer, wargv[i], maxlen);
2116 for (i = 0; wenv[i]; i++)
2117 environ[i] = wcstoutfdup_startup(buffer, wenv[i], maxlen);
f279242d 2118 environ[i] = NULL;
3f046148 2119 free(buffer);
13f1df43 2120
343ff06d
KB
2121 /* sort environment for O(log n) getenv / putenv */
2122 qsort(environ, i, sizeof(char*), compareenv);
2123
6dc71543
KB
2124 /* fix Windows specific environment settings */
2125
2126 /* on Windows it is TMP and TEMP */
2127 if (!mingw_getenv("TMPDIR")) {
2128 const char *tmp = mingw_getenv("TMP");
2129 if (!tmp)
2130 tmp = mingw_getenv("TEMP");
2131 if (tmp)
2132 setenv("TMPDIR", tmp, 1);
2133 }
2134
baea068d
KB
2135 /* simulate TERM to enable auto-color (see color.c) */
2136 if (!getenv("TERM"))
2137 setenv("TERM", "cygwin", 1);
2138
13f1df43
KB
2139 /* initialize critical section for waitpid pinfo_t list */
2140 InitializeCriticalSection(&pinfo_cs);
2141
2142 /* set up default file mode and file modes for stdin/out/err */
2143 _fmode = _O_BINARY;
2144 _setmode(_fileno(stdin), _O_BINARY);
2145 _setmode(_fileno(stdout), _O_BINARY);
2146 _setmode(_fileno(stderr), _O_BINARY);
eac14f89
KB
2147
2148 /* initialize Unicode console */
2149 winansi_init();
13f1df43 2150}
7b6aff06
NTND
2151
2152int uname(struct utsname *buf)
2153{
d62c89af 2154 unsigned v = (unsigned)GetVersion();
7b6aff06 2155 memset(buf, 0, sizeof(*buf));
5096d490
JK
2156 xsnprintf(buf->sysname, sizeof(buf->sysname), "Windows");
2157 xsnprintf(buf->release, sizeof(buf->release),
2158 "%u.%u", v & 0xff, (v >> 8) & 0xff);
7b6aff06 2159 /* assuming NT variants only.. */
5096d490
JK
2160 xsnprintf(buf->version, sizeof(buf->version),
2161 "%u", (v >> 16) & 0x7fff);
7b6aff06
NTND
2162 return 0;
2163}