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Win32: factor out environment block creation
[thirdparty/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
3e4a1ba0 315 if (fd < 0 && (oflags & O_CREAT) && 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
85faec9d
KB		 397int mingw_access(const char *filename, int mode)
398{
399 wchar_t wfilename[MAX_PATH];
400 if (xutftowcs_path(wfilename, filename) < 0)
401 return -1;
402 /* X_OK is not supported by the MSVCRT version */
403 return _waccess(wfilename, mode & ~X_OK);
404}
405
406int mingw_chdir(const char *dirname)
407{
408 wchar_t wdirname[MAX_PATH];
409 if (xutftowcs_path(wdirname, dirname) < 0)
410 return -1;
411 return _wchdir(wdirname);
412}
413
414int mingw_chmod(const char *filename, int mode)
415{
416 wchar_t wfilename[MAX_PATH];
417 if (xutftowcs_path(wfilename, filename) < 0)
418 return -1;
419 return _wchmod(wfilename, mode);
420}
421
a6d15bc3
JS		 422/*
423 * The unit of FILETIME is 100-nanoseconds since January 1, 1601, UTC.
424 * Returns the 100-nanoseconds ("hekto nanoseconds") since the epoch.
425 */
426static inline long long filetime_to_hnsec(const FILETIME *ft)
5411bdc4
MSO		 427{
428 long long winTime = ((long long)ft->dwHighDateTime << 32) + ft->dwLowDateTime;
a6d15bc3
JS		 429 /* Windows to Unix Epoch conversion */
430 return winTime - 116444736000000000LL;
431}
432
433static inline time_t filetime_to_time_t(const FILETIME *ft)
434{
435 return (time_t)(filetime_to_hnsec(ft) / 10000000);
5411bdc4
MSO		 436}
437
5411bdc4
MSO		 438/* We keep the do_lstat code in a separate function to avoid recursion.
439 * When a path ends with a slash, the stat will fail with ENOENT. In
440 * this case, we strip the trailing slashes and stat again.
9b9784ca
PT		 441 *
442 * If follow is true then act like stat() and report on the link
443 * target. Otherwise report on the link itself.
5411bdc4 444 */
9b9784ca 445static int do_lstat(int follow, const char *file_name, struct stat *buf)
5411bdc4
MSO		 446{
447 WIN32_FILE_ATTRIBUTE_DATA fdata;
85faec9d
KB		 448 wchar_t wfilename[MAX_PATH];
449 if (xutftowcs_path(wfilename, file_name) < 0)
450 return -1;
5411bdc4 451
85faec9d 452 if (GetFileAttributesExW(wfilename, GetFileExInfoStandard, &fdata)) {
5411bdc4
MSO		 453 buf->st_ino = 0;
454 buf->st_gid = 0;
455 buf->st_uid = 0;
180964f0 456 buf->st_nlink = 1;
444dc903 457 buf->st_mode = file_attr_to_st_mode(fdata.dwFileAttributes);
1d4e4cd4
JS		 458 buf->st_size = fdata.nFileSizeLow |
459 (((off_t)fdata.nFileSizeHigh)<<32);
8252df62 460 buf->st_dev = buf->st_rdev = 0; /* not used by Git */
5411bdc4
MSO		 461 buf->st_atime = filetime_to_time_t(&(fdata.ftLastAccessTime));
462 buf->st_mtime = filetime_to_time_t(&(fdata.ftLastWriteTime));
463 buf->st_ctime = filetime_to_time_t(&(fdata.ftCreationTime));
9b9784ca 464 if (fdata.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) {
85faec9d
KB		 465 WIN32_FIND_DATAW findbuf;
466 HANDLE handle = FindFirstFileW(wfilename, &findbuf);
9b9784ca
PT		 467 if (handle != INVALID_HANDLE_VALUE) {
468 if ((findbuf.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) &&
469 (findbuf.dwReserved0 == IO_REPARSE_TAG_SYMLINK)) {
470 if (follow) {
471 char buffer[MAXIMUM_REPARSE_DATA_BUFFER_SIZE];
472 buf->st_size = readlink(file_name, buffer, MAXIMUM_REPARSE_DATA_BUFFER_SIZE);
473 } else {
474 buf->st_mode = S_IFLNK;
475 }
476 buf->st_mode |= S_IREAD;
477 if (!(findbuf.dwFileAttributes & FILE_ATTRIBUTE_READONLY))
478 buf->st_mode |= S_IWRITE;
479 }
480 FindClose(handle);
481 }
482 }
5411bdc4
MSO		 483 return 0;
484 }
85faec9d
KB		 485 switch (GetLastError()) {
486 case ERROR_ACCESS_DENIED:
487 case ERROR_SHARING_VIOLATION:
488 case ERROR_LOCK_VIOLATION:
489 case ERROR_SHARING_BUFFER_EXCEEDED:
490 errno = EACCES;
491 break;
492 case ERROR_BUFFER_OVERFLOW:
493 errno = ENAMETOOLONG;
494 break;
495 case ERROR_NOT_ENOUGH_MEMORY:
496 errno = ENOMEM;
497 break;
498 default:
499 errno = ENOENT;
500 break;
501 }
5411bdc4
MSO		 502 return -1;
503}
504
505/* We provide our own lstat/fstat functions, since the provided
506 * lstat/fstat functions are so slow. These stat functions are
507 * tailored for Git's usage (read: fast), and are not meant to be
508 * complete. Note that Git stat()s are redirected to mingw_lstat()
509 * too, since Windows doesn't really handle symlinks that well.
510 */
9b9784ca 511static int do_stat_internal(int follow, const char *file_name, struct stat *buf)
5411bdc4
MSO		 512{
513 int namelen;
58aa3d2a 514 char alt_name[PATH_MAX];
5411bdc4 515
9b9784ca 516 if (!do_lstat(follow, file_name, buf))
5411bdc4
MSO		 517 return 0;
518
519 /* if file_name ended in a '/', Windows returned ENOENT;
520 * try again without trailing slashes
521 */
522 if (errno != ENOENT)
523 return -1;
524
525 namelen = strlen(file_name);
526 if (namelen && file_name[namelen-1] != '/')
527 return -1;
528 while (namelen && file_name[namelen-1] == '/')
529 --namelen;
530 if (!namelen || namelen >= PATH_MAX)
531 return -1;
532
533 memcpy(alt_name, file_name, namelen);
534 alt_name[namelen] = 0;
9b9784ca
PT		 535 return do_lstat(follow, alt_name, buf);
536}
537
538int mingw_lstat(const char *file_name, struct stat *buf)
539{
540 return do_stat_internal(0, file_name, buf);
541}
542int mingw_stat(const char *file_name, struct stat *buf)
543{
544 return do_stat_internal(1, file_name, buf);
5411bdc4
MSO		 545}
546
180964f0 547int mingw_fstat(int fd, struct stat *buf)
5411bdc4
MSO		 548{
549 HANDLE fh = (HANDLE)_get_osfhandle(fd);
550 BY_HANDLE_FILE_INFORMATION fdata;
551
552 if (fh == INVALID_HANDLE_VALUE) {
553 errno = EBADF;
554 return -1;
555 }
556 /* direct non-file handles to MS's fstat() */
180964f0 557 if (GetFileType(fh) != FILE_TYPE_DISK)
1d4e4cd4 558 return _fstati64(fd, buf);
5411bdc4
MSO		 559
560 if (GetFileInformationByHandle(fh, &fdata)) {
5411bdc4
MSO		 561 buf->st_ino = 0;
562 buf->st_gid = 0;
563 buf->st_uid = 0;
180964f0 564 buf->st_nlink = 1;
444dc903 565 buf->st_mode = file_attr_to_st_mode(fdata.dwFileAttributes);
1d4e4cd4
JS		 566 buf->st_size = fdata.nFileSizeLow |
567 (((off_t)fdata.nFileSizeHigh)<<32);
8252df62 568 buf->st_dev = buf->st_rdev = 0; /* not used by Git */
5411bdc4
MSO		 569 buf->st_atime = filetime_to_time_t(&(fdata.ftLastAccessTime));
570 buf->st_mtime = filetime_to_time_t(&(fdata.ftLastWriteTime));
571 buf->st_ctime = filetime_to_time_t(&(fdata.ftCreationTime));
572 return 0;
573 }
574 errno = EBADF;
575 return -1;
576}
577
7c0ffa1c
JS		 578static inline void time_t_to_filetime(time_t t, FILETIME *ft)
579{
580 long long winTime = t * 10000000LL + 116444736000000000LL;
581 ft->dwLowDateTime = winTime;
582 ft->dwHighDateTime = winTime >> 32;
583}
584
585int mingw_utime (const char *file_name, const struct utimbuf *times)
586{
587 FILETIME mft, aft;
588 int fh, rc;
85faec9d
KB		 589 DWORD attrs;
590 wchar_t wfilename[MAX_PATH];
591 if (xutftowcs_path(wfilename, file_name) < 0)
592 return -1;
7c0ffa1c
JS		 593
594 /* must have write permission */
85faec9d 595 attrs = GetFileAttributesW(wfilename);
852f098c
JS		 596 if (attrs != INVALID_FILE_ATTRIBUTES &&
597 (attrs & FILE_ATTRIBUTE_READONLY)) {
598 /* ignore errors here; open() will report them */
85faec9d 599 SetFileAttributesW(wfilename, attrs & ~FILE_ATTRIBUTE_READONLY);
852f098c
JS		 600 }
601
85faec9d 602 if ((fh = _wopen(wfilename, O_RDWR | O_BINARY)) < 0) {
852f098c
JS		 603 rc = -1;
604 goto revert_attrs;
605 }
7c0ffa1c 606
ded2d476
SG		 607 if (times) {
608 time_t_to_filetime(times->modtime, &mft);
609 time_t_to_filetime(times->actime, &aft);
610 } else {
611 GetSystemTimeAsFileTime(&mft);
612 aft = mft;
613 }
7c0ffa1c
JS		 614 if (!SetFileTime((HANDLE)_get_osfhandle(fh), NULL, &aft, &mft)) {
615 errno = EINVAL;
616 rc = -1;
617 } else
618 rc = 0;
619 close(fh);
852f098c
JS		 620
621revert_attrs:
622 if (attrs != INVALID_FILE_ATTRIBUTES &&
623 (attrs & FILE_ATTRIBUTE_READONLY)) {
624 /* ignore errors again */
85faec9d 625 SetFileAttributesW(wfilename, attrs);
852f098c 626 }
7c0ffa1c
JS		 627 return rc;
628}
629
f4626df5
JS		 630unsigned int sleep (unsigned int seconds)
631{
632 Sleep(seconds*1000);
633 return 0;
634}
635
85faec9d
KB		 636char *mingw_mktemp(char *template)
637{
638 wchar_t wtemplate[MAX_PATH];
639 if (xutftowcs_path(wtemplate, template) < 0)
640 return NULL;
641 if (!_wmktemp(wtemplate))
642 return NULL;
643 if (xwcstoutf(template, wtemplate, strlen(template) + 1) < 0)
644 return NULL;
645 return template;
646}
647
f4626df5
JS		 648int mkstemp(char *template)
649{
650 char *filename = mktemp(template);
651 if (filename == NULL)
652 return -1;
653 return open(filename, O_RDWR | O_CREAT, 0600);
654}
655
656int gettimeofday(struct timeval *tv, void *tz)
657{
a6d15bc3
JS		 658 FILETIME ft;
659 long long hnsec;
660
661 GetSystemTimeAsFileTime(&ft);
662 hnsec = filetime_to_hnsec(&ft);
663 tv->tv_sec = hnsec / 10000000;
664 tv->tv_usec = (hnsec % 10000000) / 10;
a42a0c2e 665 return 0;
f4626df5
JS		 666}
667
897bb8cb
JS		 668int pipe(int filedes[2])
669{
3e34d665 670 HANDLE h[2];
897bb8cb 671
3e34d665
JS		 672 /* this creates non-inheritable handles */
673 if (!CreatePipe(&h[0], &h[1], NULL, 8192)) {
674 errno = err_win_to_posix(GetLastError());
897bb8cb
JS		 675 return -1;
676 }
3e34d665
JS		 677 filedes[0] = _open_osfhandle((int)h[0], O_NOINHERIT);
678 if (filedes[0] < 0) {
897bb8cb
JS		 679 CloseHandle(h[0]);
680 CloseHandle(h[1]);
681 return -1;
682 }
3e34d665
JS		 683 filedes[1] = _open_osfhandle((int)h[1], O_NOINHERIT);
684 if (filedes[0] < 0) {
897bb8cb 685 close(filedes[0]);
897bb8cb
JS		 686 CloseHandle(h[1]);
687 return -1;
688 }
897bb8cb
JS		 689 return 0;
690}
691
f4626df5
JS		 692struct tm *gmtime_r(const time_t *timep, struct tm *result)
693{
694 /* gmtime() in MSVCRT.DLL is thread-safe, but not reentrant */
695 memcpy(result, gmtime(timep), sizeof(struct tm));
696 return result;
697}
698
699struct tm *localtime_r(const time_t *timep, struct tm *result)
700{
701 /* localtime() in MSVCRT.DLL is thread-safe, but not reentrant */
702 memcpy(result, localtime(timep), sizeof(struct tm));
703 return result;
704}
705
25fe217b
JS		 706char *mingw_getcwd(char *pointer, int len)
707{
708 int i;
85faec9d
KB		 709 wchar_t wpointer[MAX_PATH];
710 if (!_wgetcwd(wpointer, ARRAY_SIZE(wpointer)))
711 return NULL;
712 if (xwcstoutf(pointer, wpointer, len) < 0)
713 return NULL;
25fe217b
JS		 714 for (i = 0; pointer[i]; i++)
715 if (pointer[i] == '\\')
716 pointer[i] = '/';
85faec9d 717 return pointer;
25fe217b
JS		 718}
719
7e5d7768
JS		 720/*
721 * See http://msdn2.microsoft.com/en-us/library/17w5ykft(vs.71).aspx
722 * (Parsing C++ Command-Line Arguments)
723 */
724static const char *quote_arg(const char *arg)
725{
726 /* count chars to quote */
727 int len = 0, n = 0;
728 int force_quotes = 0;
729 char *q, *d;
730 const char *p = arg;
731 if (!*p) force_quotes = 1;
732 while (*p) {
3aea1a5a 733 if (isspace(*p) || *p == '*' || *p == '?' || *p == '{' || *p == '\'')
7e5d7768
JS		 734 force_quotes = 1;
735 else if (*p == '"')
736 n++;
737 else if (*p == '\\') {
738 int count = 0;
739 while (*p == '\\') {
740 count++;
741 p++;
742 len++;
743 }
744 if (*p == '"')
745 n += count*2 + 1;
746 continue;
747 }
748 len++;
749 p++;
750 }
751 if (!force_quotes && n == 0)
752 return arg;
753
754 /* insert \ where necessary */
755 d = q = xmalloc(len+n+3);
756 *d++ = '"';
757 while (*arg) {
758 if (*arg == '"')
759 *d++ = '\\';
760 else if (*arg == '\\') {
761 int count = 0;
762 while (*arg == '\\') {
763 count++;
764 *d++ = *arg++;
765 }
766 if (*arg == '"') {
767 while (count-- > 0)
768 *d++ = '\\';
769 *d++ = '\\';
770 }
771 }
772 *d++ = *arg++;
773 }
774 *d++ = '"';
775 *d++ = 0;
776 return q;
777}
778
f1a4dfb8
JS		 779static const char *parse_interpreter(const char *cmd)
780{
781 static char buf[100];
782 char *p, *opt;
783 int n, fd;
784
785 /* don't even try a .exe */
786 n = strlen(cmd);
787 if (n >= 4 && !strcasecmp(cmd+n-4, ".exe"))
788 return NULL;
789
790 fd = open(cmd, O_RDONLY);
791 if (fd < 0)
792 return NULL;
793 n = read(fd, buf, sizeof(buf)-1);
794 close(fd);
795 if (n < 4) /* at least '#!/x' and not error */
796 return NULL;
797
798 if (buf[0] != '#' || buf[1] != '!')
799 return NULL;
800 buf[n] = '\0';
bedc4279
PH		 801 p = buf + strcspn(buf, "\r\n");
802 if (!*p)
f1a4dfb8
JS		 803 return NULL;
804
805 *p = '\0';
806 if (!(p = strrchr(buf+2, '/')) && !(p = strrchr(buf+2, '\\')))
807 return NULL;
808 /* strip options */
809 if ((opt = strchr(p+1, ' ')))
810 *opt = '\0';
811 return p+1;
812}
813
814/*
815 * Splits the PATH into parts.
816 */
817static char **get_path_split(void)
818{
06bc4b79 819 char *p, **path, *envpath = mingw_getenv("PATH");
f1a4dfb8
JS		 820 int i, n = 0;
821
822 if (!envpath || !*envpath)
823 return NULL;
824
825 envpath = xstrdup(envpath);
826 p = envpath;
827 while (p) {
828 char *dir = p;
829 p = strchr(p, ';');
830 if (p) *p++ = '\0';
831 if (*dir) { /* not earlier, catches series of ; */
832 ++n;
833 }
834 }
835 if (!n)
836 return NULL;
837
4b25d091 838 path = xmalloc((n+1)*sizeof(char *));
f1a4dfb8
JS		 839 p = envpath;
840 i = 0;
841 do {
842 if (*p)
843 path[i++] = xstrdup(p);
844 p = p+strlen(p)+1;
845 } while (i < n);
846 path[i] = NULL;
847
848 free(envpath);
849
850 return path;
851}
852
853static void free_path_split(char **path)
854{
0d30ad71
FL		 855 char **p = path;
856
f1a4dfb8
JS		 857 if (!path)
858 return;
859
f1a4dfb8
JS		 860 while (*p)
861 free(*p++);
862 free(path);
863}
864
865/*
866 * exe_only means that we only want to detect .exe files, but not scripts
867 * (which do not have an extension)
868 */
869static char *lookup_prog(const char *dir, const char *cmd, int isexe, int exe_only)
870{
871 char path[MAX_PATH];
872 snprintf(path, sizeof(path), "%s/%s.exe", dir, cmd);
873
874 if (!isexe && access(path, F_OK) == 0)
875 return xstrdup(path);
876 path[strlen(path)-4] = '\0';
877 if ((!exe_only || isexe) && access(path, F_OK) == 0)
fe77b695
ER		 878 if (!(GetFileAttributes(path) & FILE_ATTRIBUTE_DIRECTORY))
879 return xstrdup(path);
f1a4dfb8
JS		 880 return NULL;
881}
882
883/*
22e5e58a 884 * Determines the absolute path of cmd using the split path in path.
f1a4dfb8
JS		 885 * If cmd contains a slash or backslash, no lookup is performed.
886 */
887static char *path_lookup(const char *cmd, char **path, int exe_only)
888{
889 char *prog = NULL;
890 int len = strlen(cmd);
891 int isexe = len >= 4 && !strcasecmp(cmd+len-4, ".exe");
892
893 if (strchr(cmd, '/') || strchr(cmd, '\\'))
894 prog = xstrdup(cmd);
895
896 while (!prog && *path)
897 prog = lookup_prog(*path++, cmd, isexe, exe_only);
898
899 return prog;
900}
901
26c7b21a 902static int compareenv(const void *a, const void *b)
7e5d7768
JS		 903{
904 char *const *ea = a;
905 char *const *eb = b;
906 return strcasecmp(*ea, *eb);
907}
908
df0e998c
KB		 909/*
910 * Create environment block suitable for CreateProcess.
911 */
912static wchar_t *make_environment_block(char **env)
913{
914 wchar_t *wenvblk = NULL;
915 int count = 0;
916 char **e, **tmpenv;
917 int size = 0, wenvsz = 0, wenvpos = 0;
918
919 for (e = env; *e; e++)
920 count++;
921
922 /* environment must be sorted */
923 tmpenv = xmalloc(sizeof(*tmpenv) * (count + 1));
924 memcpy(tmpenv, env, sizeof(*tmpenv) * (count + 1));
925 qsort(tmpenv, count, sizeof(*tmpenv), compareenv);
926
927 /* create environment block from temporary environment */
928 for (e = tmpenv; *e; e++) {
929 size = 2 * strlen(*e) + 2; /* +2 for final \0 */
930 ALLOC_GROW(wenvblk, (wenvpos + size) * sizeof(wchar_t), wenvsz);
931 wenvpos += xutftowcs(&wenvblk[wenvpos], *e, size) + 1;
932 }
933 /* add final \0 terminator */
934 wenvblk[wenvpos] = 0;
935 free(tmpenv);
936 return wenvblk;
937}
938
52de4db5
EFL		 939struct pinfo_t {
940 struct pinfo_t *next;
941 pid_t pid;
942 HANDLE proc;
657b35f4
RJ		 943};
944static struct pinfo_t *pinfo = NULL;
52de4db5
EFL		 945CRITICAL_SECTION pinfo_cs;
946
75301f90 947static pid_t mingw_spawnve_fd(const char *cmd, const char **argv, char **env,
f9a2743c 948 const char *dir,
75301f90 949 int prepend_cmd, int fhin, int fhout, int fherr)
7e5d7768 950{
99c3c76d 951 STARTUPINFOW si;
7e5d7768 952 PROCESS_INFORMATION pi;
7eb2619c
KB		 953 struct strbuf args;
954 wchar_t wcmd[MAX_PATH], wdir[MAX_PATH], *wargs, *wenvblk = NULL;
955 unsigned flags = CREATE_UNICODE_ENVIRONMENT;
7e5d7768
JS		 956 BOOL ret;
957
958 /* Determine whether or not we are associated to a console */
959 HANDLE cons = CreateFile("CONOUT$", GENERIC_WRITE,
960 FILE_SHARE_WRITE, NULL, OPEN_EXISTING,
961 FILE_ATTRIBUTE_NORMAL, NULL);
962 if (cons == INVALID_HANDLE_VALUE) {
963 /* There is no console associated with this process.
964 * Since the child is a console process, Windows
965 * would normally create a console window. But
966 * since we'll be redirecting std streams, we do
967 * not need the console.
19fb896f
AG		 968 * It is necessary to use DETACHED_PROCESS
969 * instead of CREATE_NO_WINDOW to make ssh
970 * recognize that it has no console.
7e5d7768 971 */
7eb2619c 972 flags |= DETACHED_PROCESS;
7e5d7768
JS		 973 } else {
974 /* There is already a console. If we specified
19fb896f 975 * DETACHED_PROCESS here, too, Windows would
7e5d7768 976 * disassociate the child from the console.
19fb896f 977 * The same is true for CREATE_NO_WINDOW.
7e5d7768
JS		 978 * Go figure!
979 */
7e5d7768
JS		 980 CloseHandle(cons);
981 }
982 memset(&si, 0, sizeof(si));
983 si.cb = sizeof(si);
984 si.dwFlags = STARTF_USESTDHANDLES;
eac14f89
KB		 985 si.hStdInput = winansi_get_osfhandle(fhin);
986 si.hStdOutput = winansi_get_osfhandle(fhout);
987 si.hStdError = winansi_get_osfhandle(fherr);
7e5d7768 988
99c3c76d
KB		 989 if (xutftowcs_path(wcmd, cmd) < 0)
990 return -1;
991 if (dir && xutftowcs_path(wdir, dir) < 0)
992 return -1;
993
7e5d7768
JS		 994 /* concatenate argv, quoting args as we go */
995 strbuf_init(&args, 0);
996 if (prepend_cmd) {
997 char *quoted = (char *)quote_arg(cmd);
998 strbuf_addstr(&args, quoted);
999 if (quoted != cmd)
1000 free(quoted);
1001 }
1002 for (; *argv; argv++) {
1003 char *quoted = (char *)quote_arg(*argv);
1004 if (*args.buf)
1005 strbuf_addch(&args, ' ');
1006 strbuf_addstr(&args, quoted);
1007 if (quoted != *argv)
1008 free(quoted);
1009 }
1010
99c3c76d
KB		 1011 wargs = xmalloc((2 * args.len + 1) * sizeof(wchar_t));
1012 xutftowcs(wargs, args.buf, 2 * args.len + 1);
1013 strbuf_release(&args);
1014
df0e998c
KB		 1015 if (env)
1016 wenvblk = make_environment_block(env);
7e5d7768
JS		 1017
1018 memset(&pi, 0, sizeof(pi));
99c3c76d 1019 ret = CreateProcessW(wcmd, wargs, NULL, NULL, TRUE, flags,
7eb2619c 1020 wenvblk, dir ? wdir : NULL, &si, &pi);
7e5d7768 1021
7eb2619c 1022 free(wenvblk);
99c3c76d 1023 free(wargs);
7e5d7768
JS		 1024
1025 if (!ret) {
1026 errno = ENOENT;
1027 return -1;
1028 }
1029 CloseHandle(pi.hThread);
52de4db5
EFL		 1030
1031 /*
1032 * The process ID is the human-readable identifier of the process
1033 * that we want to present in log and error messages. The handle
1034 * is not useful for this purpose. But we cannot close it, either,
1035 * because it is not possible to turn a process ID into a process
1036 * handle after the process terminated.
1037 * Keep the handle in a list for waitpid.
1038 */
1039 EnterCriticalSection(&pinfo_cs);
1040 {
1041 struct pinfo_t *info = xmalloc(sizeof(struct pinfo_t));
1042 info->pid = pi.dwProcessId;
1043 info->proc = pi.hProcess;
1044 info->next = pinfo;
1045 pinfo = info;
1046 }
1047 LeaveCriticalSection(&pinfo_cs);
1048
1049 return (pid_t)pi.dwProcessId;
7e5d7768
JS		 1050}
1051
3e66e47b 1052static pid_t mingw_spawnv(const char *cmd, const char **argv, int prepend_cmd)
75301f90 1053{
3e66e47b 1054 return mingw_spawnve_fd(cmd, argv, environ, NULL, prepend_cmd, 0, 1, 2);
75301f90
JS		 1055}
1056
1057pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **env,
f9a2743c 1058 const char *dir,
75301f90 1059 int fhin, int fhout, int fherr)
7e5d7768
JS		 1060{
1061 pid_t pid;
1062 char **path = get_path_split();
1063 char *prog = path_lookup(cmd, path, 0);
1064
1065 if (!prog) {
1066 errno = ENOENT;
1067 pid = -1;
1068 }
1069 else {
1070 const char *interpr = parse_interpreter(prog);
1071
1072 if (interpr) {
1073 const char *argv0 = argv[0];
1074 char *iprog = path_lookup(interpr, path, 1);
1075 argv[0] = prog;
1076 if (!iprog) {
1077 errno = ENOENT;
1078 pid = -1;
1079 }
1080 else {
f9a2743c 1081 pid = mingw_spawnve_fd(iprog, argv, env, dir, 1,
75301f90 1082 fhin, fhout, fherr);
7e5d7768
JS		 1083 free(iprog);
1084 }
1085 argv[0] = argv0;
1086 }
1087 else
f9a2743c 1088 pid = mingw_spawnve_fd(prog, argv, env, dir, 0,
75301f90 1089 fhin, fhout, fherr);
7e5d7768
JS		 1090 free(prog);
1091 }
1092 free_path_split(path);
1093 return pid;
1094}
1095
3e66e47b 1096static int try_shell_exec(const char *cmd, char *const *argv)
f1a4dfb8
JS		 1097{
1098 const char *interpr = parse_interpreter(cmd);
1099 char **path;
1100 char *prog;
1101 int pid = 0;
1102
1103 if (!interpr)
1104 return 0;
1105 path = get_path_split();
1106 prog = path_lookup(interpr, path, 1);
1107 if (prog) {
1108 int argc = 0;
1109 const char **argv2;
1110 while (argv[argc]) argc++;
7e5d7768
JS		 1111 argv2 = xmalloc(sizeof(*argv) * (argc+1));
1112 argv2[0] = (char *)cmd; /* full path to the script file */
1113 memcpy(&argv2[1], &argv[1], sizeof(*argv) * argc);
3e66e47b 1114 pid = mingw_spawnv(prog, argv2, 1);
f1a4dfb8
JS		 1115 if (pid >= 0) {
1116 int status;
1117 if (waitpid(pid, &status, 0) < 0)
1118 status = 255;
1119 exit(status);
1120 }
1121 pid = 1; /* indicate that we tried but failed */
1122 free(prog);
1123 free(argv2);
1124 }
1125 free_path_split(path);
1126 return pid;
1127}
1128
3e66e47b 1129int mingw_execv(const char *cmd, char *const *argv)
f1a4dfb8
JS		 1130{
1131 /* check if git_command is a shell script */
3e66e47b 1132 if (!try_shell_exec(cmd, argv)) {
f1a4dfb8
JS		 1133 int pid, status;
1134
3e66e47b 1135 pid = mingw_spawnv(cmd, (const char **)argv, 0);
f1a4dfb8 1136 if (pid < 0)
570f1e6e 1137 return -1;
f1a4dfb8
JS		 1138 if (waitpid(pid, &status, 0) < 0)
1139 status = 255;
1140 exit(status);
1141 }
570f1e6e 1142 return -1;
f1a4dfb8
JS		 1143}
1144
1696d723 1145int mingw_execvp(const char *cmd, char *const *argv)
f1a4dfb8
JS		 1146{
1147 char **path = get_path_split();
1148 char *prog = path_lookup(cmd, path, 0);
1149
1150 if (prog) {
3e66e47b 1151 mingw_execv(prog, argv);
f1a4dfb8
JS		 1152 free(prog);
1153 } else
1154 errno = ENOENT;
1155
1156 free_path_split(path);
1696d723 1157 return -1;
f1a4dfb8
JS		 1158}
1159
82fc07b7
EFL		 1160int mingw_kill(pid_t pid, int sig)
1161{
1162 if (pid > 0 && sig == SIGTERM) {
1163 HANDLE h = OpenProcess(PROCESS_TERMINATE, FALSE, pid);
1164
1165 if (TerminateProcess(h, -1)) {
1166 CloseHandle(h);
1167 return 0;
1168 }
1169
1170 errno = err_win_to_posix(GetLastError());
1171 CloseHandle(h);
1172 return -1;
64a99eb4
NTND		 1173 } else if (pid > 0 && sig == 0) {
1174 HANDLE h = OpenProcess(PROCESS_QUERY_INFORMATION, FALSE, pid);
1175 if (h) {
1176 CloseHandle(h);
1177 return 0;
1178 }
82fc07b7
EFL		 1179 }
1180
1181 errno = EINVAL;
1182 return -1;
1183}
1184
2affea41 1185static char **copy_environ(void)
ba26f296
JS		 1186{
1187 char **env;
1188 int i = 0;
1189 while (environ[i])
1190 i++;
1191 env = xmalloc((i+1)*sizeof(*env));
1192 for (i = 0; environ[i]; i++)
1193 env[i] = xstrdup(environ[i]);
1194 env[i] = NULL;
1195 return env;
1196}
1197
1198void free_environ(char **env)
1199{
1200 int i;
1201 for (i = 0; env[i]; i++)
1202 free(env[i]);
1203 free(env);
1204}
1205
26c7b21a 1206static int lookupenv(char **env, const char *name, size_t nmln)
ba26f296
JS		 1207{
1208 int i;
1209
1210 for (i = 0; env[i]; i++) {
38d27501 1211 if (!strncasecmp(env[i], name, nmln) && '=' == env[i][nmln])
ba26f296
JS		 1212 /* matches */
1213 return i;
1214 }
1215 return -1;
1216}
1217
1218/*
1219 * If name contains '=', then sets the variable, otherwise it unsets it
1220 */
26c7b21a 1221static char **do_putenv(char **env, const char *name)
ba26f296
JS		 1222{
1223 char *eq = strchrnul(name, '=');
26c7b21a 1224 int i = lookupenv(env, name, eq-name);
ba26f296
JS		 1225
1226 if (i < 0) {
1227 if (*eq) {
1228 for (i = 0; env[i]; i++)
1229 ;
1230 env = xrealloc(env, (i+2)*sizeof(*env));
e96942e8 1231 env[i] = (char*) name;
ba26f296
JS		 1232 env[i+1] = NULL;
1233 }
1234 }
1235 else {
1236 free(env[i]);
1237 if (*eq)
e96942e8 1238 env[i] = (char*) name;
ba26f296
JS		 1239 else
1240 for (; env[i]; i++)
1241 env[i] = env[i+1];
1242 }
1243 return env;
1244}
1245
2affea41
JS		 1246/*
1247 * Copies global environ and adjusts variables as specified by vars.
1248 */
1249char **make_augmented_environ(const char *const *vars)
1250{
1251 char **env = copy_environ();
1252
e96942e8
KB		 1253 while (*vars) {
1254 const char *v = *vars++;
26c7b21a 1255 env = do_putenv(env, strchr(v, '=') ? xstrdup(v) : v);
e96942e8 1256 }
2affea41
JS		 1257 return env;
1258}
1259
06bc4b79
JS		 1260#undef getenv
1261char *mingw_getenv(const char *name)
1262{
9ae1afa5 1263 char *result = getenv(name);
06bc4b79
JS		 1264 if (!result && !strcmp(name, "TMPDIR")) {
1265 /* on Windows it is TMP and TEMP */
9ae1afa5 1266 result = getenv("TMP");
06bc4b79 1267 if (!result)
9ae1afa5 1268 result = getenv("TEMP");
06bc4b79
JS		 1269 }
1270 return result;
1271}
1272
b729f98f
KB		 1273int mingw_putenv(const char *namevalue)
1274{
26c7b21a 1275 environ = do_putenv(environ, namevalue);
b729f98f
KB		 1276 return 0;
1277}
1278
fe3b2b7b
MS		 1279/*
1280 * Note, this isn't a complete replacement for getaddrinfo. It assumes
0353a0c4 1281 * that service contains a numerical port, or that it is null. It
fe3b2b7b
MS		 1282 * does a simple search using gethostbyname, and returns one IPv4 host
1283 * if one was found.
1284 */
1285static int WSAAPI getaddrinfo_stub(const char *node, const char *service,
1286 const struct addrinfo *hints,
1287 struct addrinfo **res)
1288{
cbefd2d6 1289 struct hostent *h = NULL;
fe3b2b7b
MS		 1290 struct addrinfo *ai;
1291 struct sockaddr_in *sin;
1292
cbefd2d6
MS		 1293 if (node) {
1294 h = gethostbyname(node);
1295 if (!h)
1296 return WSAGetLastError();
1297 }
fe3b2b7b
MS		 1298
1299 ai = xmalloc(sizeof(struct addrinfo));
1300 *res = ai;
1301 ai->ai_flags = 0;
1302 ai->ai_family = AF_INET;
cbefd2d6
MS		 1303 ai->ai_socktype = hints ? hints->ai_socktype : 0;
1304 switch (ai->ai_socktype) {
fe3b2b7b
MS		 1305 case SOCK_STREAM:
1306 ai->ai_protocol = IPPROTO_TCP;
1307 break;
1308 case SOCK_DGRAM:
1309 ai->ai_protocol = IPPROTO_UDP;
1310 break;
1311 default:
1312 ai->ai_protocol = 0;
1313 break;
1314 }
1315 ai->ai_addrlen = sizeof(struct sockaddr_in);
cbefd2d6 1316 if (hints && (hints->ai_flags & AI_CANONNAME))
040a6551 1317 ai->ai_canonname = h ? xstrdup(h->h_name) : NULL;
cbefd2d6
MS		 1318 else
1319 ai->ai_canonname = NULL;
fe3b2b7b
MS		 1320
1321 sin = xmalloc(ai->ai_addrlen);
1322 memset(sin, 0, ai->ai_addrlen);
1323 sin->sin_family = AF_INET;
cbefd2d6
MS		 1324 /* Note: getaddrinfo is supposed to allow service to be a string,
1325 * which should be looked up using getservbyname. This is
1326 * currently not implemented */
fe3b2b7b
MS		 1327 if (service)
1328 sin->sin_port = htons(atoi(service));
cbefd2d6
MS		 1329 if (h)
1330 sin->sin_addr = *(struct in_addr *)h->h_addr;
1331 else if (hints && (hints->ai_flags & AI_PASSIVE))
1332 sin->sin_addr.s_addr = INADDR_ANY;
1333 else
1334 sin->sin_addr.s_addr = INADDR_LOOPBACK;
fe3b2b7b 1335 ai->ai_addr = (struct sockaddr *)sin;
657b35f4 1336 ai->ai_next = NULL;
fe3b2b7b
MS		 1337 return 0;
1338}
1339
1340static void WSAAPI freeaddrinfo_stub(struct addrinfo *res)
1341{
1342 free(res->ai_canonname);
1343 free(res->ai_addr);
1344 free(res);
1345}
1346
1347static int WSAAPI getnameinfo_stub(const struct sockaddr *sa, socklen_t salen,
1348 char *host, DWORD hostlen,
1349 char *serv, DWORD servlen, int flags)
1350{
1351 const struct sockaddr_in *sin = (const struct sockaddr_in *)sa;
1352 if (sa->sa_family != AF_INET)
1353 return EAI_FAMILY;
1354 if (!host && !serv)
1355 return EAI_NONAME;
1356
1357 if (host && hostlen > 0) {
1358 struct hostent *ent = NULL;
1359 if (!(flags & NI_NUMERICHOST))
1360 ent = gethostbyaddr((const char *)&sin->sin_addr,
1361 sizeof(sin->sin_addr), AF_INET);
1362
1363 if (ent)
1364 snprintf(host, hostlen, "%s", ent->h_name);
1365 else if (flags & NI_NAMEREQD)
1366 return EAI_NONAME;
1367 else
1368 snprintf(host, hostlen, "%s", inet_ntoa(sin->sin_addr));
1369 }
1370
1371 if (serv && servlen > 0) {
1372 struct servent *ent = NULL;
1373 if (!(flags & NI_NUMERICSERV))
1374 ent = getservbyport(sin->sin_port,
1375 flags & NI_DGRAM ? "udp" : "tcp");
1376
1377 if (ent)
1378 snprintf(serv, servlen, "%s", ent->s_name);
1379 else
1380 snprintf(serv, servlen, "%d", ntohs(sin->sin_port));
1381 }
1382
1383 return 0;
1384}
1385
1386static HMODULE ipv6_dll = NULL;
1387static void (WSAAPI *ipv6_freeaddrinfo)(struct addrinfo *res);
1388static int (WSAAPI *ipv6_getaddrinfo)(const char *node, const char *service,
1389 const struct addrinfo *hints,
1390 struct addrinfo **res);
1391static int (WSAAPI *ipv6_getnameinfo)(const struct sockaddr *sa, socklen_t salen,
1392 char *host, DWORD hostlen,
1393 char *serv, DWORD servlen, int flags);
1394/*
1395 * gai_strerror is an inline function in the ws2tcpip.h header, so we
1396 * don't need to try to load that one dynamically.
1397 */
1398
1399static void socket_cleanup(void)
1400{
1401 WSACleanup();
1402 if (ipv6_dll)
1403 FreeLibrary(ipv6_dll);
1404 ipv6_dll = NULL;
1405 ipv6_freeaddrinfo = freeaddrinfo_stub;
1406 ipv6_getaddrinfo = getaddrinfo_stub;
1407 ipv6_getnameinfo = getnameinfo_stub;
1408}
1409
b7cc9f82 1410static void ensure_socket_initialization(void)
746fb857
JS		 1411{
1412 WSADATA wsa;
b7cc9f82 1413 static int initialized = 0;
fe3b2b7b
MS		 1414 const char *libraries[] = { "ws2_32.dll", "wship6.dll", NULL };
1415 const char **name;
b7cc9f82
MS		 1416
1417 if (initialized)
1418 return;
746fb857
JS		 1419
1420 if (WSAStartup(MAKEWORD(2,2), &wsa))
1421 die("unable to initialize winsock subsystem, error %d",
1422 WSAGetLastError());
fe3b2b7b
MS		 1423
1424 for (name = libraries; *name; name++) {
1425 ipv6_dll = LoadLibrary(*name);
1426 if (!ipv6_dll)
1427 continue;
1428
1429 ipv6_freeaddrinfo = (void (WSAAPI *)(struct addrinfo *))
1430 GetProcAddress(ipv6_dll, "freeaddrinfo");
1431 ipv6_getaddrinfo = (int (WSAAPI *)(const char *, const char *,
1432 const struct addrinfo *,
1433 struct addrinfo **))
1434 GetProcAddress(ipv6_dll, "getaddrinfo");
1435 ipv6_getnameinfo = (int (WSAAPI *)(const struct sockaddr *,
1436 socklen_t, char *, DWORD,
1437 char *, DWORD, int))
1438 GetProcAddress(ipv6_dll, "getnameinfo");
1439 if (!ipv6_freeaddrinfo || !ipv6_getaddrinfo || !ipv6_getnameinfo) {
1440 FreeLibrary(ipv6_dll);
1441 ipv6_dll = NULL;
1442 } else
1443 break;
1444 }
1445 if (!ipv6_freeaddrinfo || !ipv6_getaddrinfo || !ipv6_getnameinfo) {
1446 ipv6_freeaddrinfo = freeaddrinfo_stub;
1447 ipv6_getaddrinfo = getaddrinfo_stub;
1448 ipv6_getnameinfo = getnameinfo_stub;
1449 }
1450
1451 atexit(socket_cleanup);
b7cc9f82
MS		 1452 initialized = 1;
1453}
1454
13d24b01
PT		 1455#undef gethostname
1456int mingw_gethostname(char *name, int namelen)
1457{
1458 ensure_socket_initialization();
1459 return gethostname(name, namelen);
1460}
1461
b7cc9f82
MS		 1462#undef gethostbyname
1463struct hostent *mingw_gethostbyname(const char *host)
1464{
1465 ensure_socket_initialization();
746fb857
JS		 1466 return gethostbyname(host);
1467}
1468
fe3b2b7b
MS		 1469void mingw_freeaddrinfo(struct addrinfo *res)
1470{
1471 ipv6_freeaddrinfo(res);
1472}
1473
1474int mingw_getaddrinfo(const char *node, const char *service,
1475 const struct addrinfo *hints, struct addrinfo **res)
1476{
1477 ensure_socket_initialization();
1478 return ipv6_getaddrinfo(node, service, hints, res);
1479}
1480
1481int mingw_getnameinfo(const struct sockaddr *sa, socklen_t salen,
1482 char *host, DWORD hostlen, char *serv, DWORD servlen,
1483 int flags)
1484{
1485 ensure_socket_initialization();
1486 return ipv6_getnameinfo(sa, salen, host, hostlen, serv, servlen, flags);
1487}
1488
746fb857
JS		 1489int mingw_socket(int domain, int type, int protocol)
1490{
1491 int sockfd;
772991af
MP		 1492 SOCKET s;
1493
1494 ensure_socket_initialization();
1495 s = WSASocket(domain, type, protocol, NULL, 0, 0);
746fb857
JS		 1496 if (s == INVALID_SOCKET) {
1497 /*
1498 * WSAGetLastError() values are regular BSD error codes
1499 * biased by WSABASEERR.
1500 * However, strerror() does not know about networking
1501 * specific errors, which are values beginning at 38 or so.
1502 * Therefore, we choose to leave the biased error code
1503 * in errno so that _if_ someone looks up the code somewhere,
1504 * then it is at least the number that are usually listed.
1505 */
1506 errno = WSAGetLastError();
1507 return -1;
1508 }
1509 /* convert into a file descriptor */
1510 if ((sockfd = _open_osfhandle(s, O_RDWR|O_BINARY)) < 0) {
1511 closesocket(s);
1512 return error("unable to make a socket file descriptor: %s",
1513 strerror(errno));
1514 }
1515 return sockfd;
1516}
1517
1518#undef connect
1519int mingw_connect(int sockfd, struct sockaddr *sa, size_t sz)
1520{
1521 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
1522 return connect(s, sa, sz);
1523}
1524
772991af
MP		 1525#undef bind
1526int mingw_bind(int sockfd, struct sockaddr *sa, size_t sz)
1527{
1528 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
1529 return bind(s, sa, sz);
1530}
1531
1532#undef setsockopt
1533int mingw_setsockopt(int sockfd, int lvl, int optname, void *optval, int optlen)
1534{
1535 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
1536 return setsockopt(s, lvl, optname, (const char*)optval, optlen);
1537}
1538
a7941795
JS		 1539#undef shutdown
1540int mingw_shutdown(int sockfd, int how)
1541{
1542 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
1543 return shutdown(s, how);
1544}
1545
772991af
MP		 1546#undef listen
1547int mingw_listen(int sockfd, int backlog)
1548{
1549 SOCKET s = (SOCKET)_get_osfhandle(sockfd);
1550 return listen(s, backlog);
1551}
1552
1553#undef accept
1554int mingw_accept(int sockfd1, struct sockaddr *sa, socklen_t *sz)
1555{
1556 int sockfd2;
1557
1558 SOCKET s1 = (SOCKET)_get_osfhandle(sockfd1);
1559 SOCKET s2 = accept(s1, sa, sz);
1560
1561 /* convert into a file descriptor */
1562 if ((sockfd2 = _open_osfhandle(s2, O_RDWR|O_BINARY)) < 0) {
1563 int err = errno;
1564 closesocket(s2);
1565 return error("unable to make a socket file descriptor: %s",
1566 strerror(err));
1567 }
1568 return sockfd2;
1569}
1570
ea9e98c3
JS		 1571#undef rename
1572int mingw_rename(const char *pold, const char *pnew)
1573{
6ac6f878
JS		 1574 DWORD attrs, gle;
1575 int tries = 0;
85faec9d
KB		 1576 wchar_t wpold[MAX_PATH], wpnew[MAX_PATH];
1577 if (xutftowcs_path(wpold, pold) < 0 || xutftowcs_path(wpnew, pnew) < 0)
1578 return -1;
632f7017 1579
ea9e98c3
JS		 1580 /*
1581 * Try native rename() first to get errno right.
1582 * It is based on MoveFile(), which cannot overwrite existing files.
1583 */
85faec9d 1584 if (!_wrename(wpold, wpnew))
ea9e98c3
JS		 1585 return 0;
1586 if (errno != EEXIST)
1587 return -1;
6ac6f878 1588repeat:
85faec9d 1589 if (MoveFileExW(wpold, wpnew, MOVEFILE_REPLACE_EXISTING))
ea9e98c3
JS		 1590 return 0;
1591 /* TODO: translate more errors */
6ac6f878
JS		 1592 gle = GetLastError();
1593 if (gle == ERROR_ACCESS_DENIED &&
85faec9d 1594 (attrs = GetFileAttributesW(wpnew)) != INVALID_FILE_ATTRIBUTES) {
632f7017 1595 if (attrs & FILE_ATTRIBUTE_DIRECTORY) {
ea9e98c3
JS		 1596 errno = EISDIR;
1597 return -1;
1598 }
632f7017 1599 if ((attrs & FILE_ATTRIBUTE_READONLY) &&
85faec9d
KB		 1600 SetFileAttributesW(wpnew, attrs & ~FILE_ATTRIBUTE_READONLY)) {
1601 if (MoveFileExW(wpold, wpnew, MOVEFILE_REPLACE_EXISTING))
632f7017 1602 return 0;
6ac6f878 1603 gle = GetLastError();
632f7017 1604 /* revert file attributes on failure */
85faec9d 1605 SetFileAttributesW(wpnew, attrs);
632f7017 1606 }
ea9e98c3 1607 }
6ac6f878
JS		 1608 if (tries < ARRAY_SIZE(delay) && gle == ERROR_ACCESS_DENIED) {
1609 /*
1610 * We assume that some other process had the source or
1611 * destination file open at the wrong moment and retry.
1612 * In order to give the other process a higher chance to
1613 * complete its operation, we give up our time slice now.
1614 * If we have to retry again, we do sleep a bit.
1615 */
1616 Sleep(delay[tries]);
1617 tries++;
1618 goto repeat;
1619 }
c9b78400
HV		 1620 if (gle == ERROR_ACCESS_DENIED &&
1621 ask_yes_no_if_possible("Rename from '%s' to '%s' failed. "
1622 "Should I try again?", pold, pnew))
1623 goto repeat;
1624
ea9e98c3
JS		 1625 errno = EACCES;
1626 return -1;
1627}
1628
b1b95204
RJ		 1629/*
1630 * Note that this doesn't return the actual pagesize, but
1631 * the allocation granularity. If future Windows specific git code
1632 * needs the real getpagesize function, we need to find another solution.
1633 */
1634int mingw_getpagesize(void)
1635{
1636 SYSTEM_INFO si;
1637 GetSystemInfo(&si);
1638 return si.dwAllocationGranularity;
1639}
1640
f4626df5
JS		 1641struct passwd *getpwuid(int uid)
1642{
f7597aca 1643 static char user_name[100];
f4626df5 1644 static struct passwd p;
f7597aca
JS		 1645
1646 DWORD len = sizeof(user_name);
1647 if (!GetUserName(user_name, &len))
1648 return NULL;
1649 p.pw_name = user_name;
1650 p.pw_gecos = "unknown";
1651 p.pw_dir = NULL;
f4626df5
JS		 1652 return &p;
1653}
1654
6072fc31
JS		 1655static HANDLE timer_event;
1656static HANDLE timer_thread;
1657static int timer_interval;
1658static int one_shot;
176478a8 1659static sig_handler_t timer_fn = SIG_DFL, sigint_fn = SIG_DFL;
6072fc31
JS		 1660
1661/* The timer works like this:
1662 * The thread, ticktack(), is a trivial routine that most of the time
1663 * only waits to receive the signal to terminate. The main thread tells
1664 * the thread to terminate by setting the timer_event to the signalled
1665 * state.
1666 * But ticktack() interrupts the wait state after the timer's interval
1667 * length to call the signal handler.
1668 */
1669
d7fa500f 1670static unsigned __stdcall ticktack(void *dummy)
6072fc31
JS		 1671{
1672 while (WaitForSingleObject(timer_event, timer_interval) == WAIT_TIMEOUT) {
176478a8 1673 mingw_raise(SIGALRM);
6072fc31
JS		 1674 if (one_shot)
1675 break;
1676 }
1677 return 0;
1678}
1679
1680static int start_timer_thread(void)
1681{
1682 timer_event = CreateEvent(NULL, FALSE, FALSE, NULL);
1683 if (timer_event) {
1684 timer_thread = (HANDLE) _beginthreadex(NULL, 0, ticktack, NULL, 0, NULL);
1685 if (!timer_thread )
1686 return errno = ENOMEM,
1687 error("cannot start timer thread");
1688 } else
1689 return errno = ENOMEM,
1690 error("cannot allocate resources for timer");
1691 return 0;
1692}
1693
1694static void stop_timer_thread(void)
1695{
1696 if (timer_event)
1697 SetEvent(timer_event); /* tell thread to terminate */
1698 if (timer_thread) {
1699 int rc = WaitForSingleObject(timer_thread, 1000);
1700 if (rc == WAIT_TIMEOUT)
1701 error("timer thread did not terminate timely");
1702 else if (rc != WAIT_OBJECT_0)
1703 error("waiting for timer thread failed: %lu",
1704 GetLastError());
1705 CloseHandle(timer_thread);
1706 }
1707 if (timer_event)
1708 CloseHandle(timer_event);
1709 timer_event = NULL;
1710 timer_thread = NULL;
1711}
1712
1713static inline int is_timeval_eq(const struct timeval *i1, const struct timeval *i2)
1714{
1715 return i1->tv_sec == i2->tv_sec && i1->tv_usec == i2->tv_usec;
1716}
1717
f4626df5
JS		 1718int setitimer(int type, struct itimerval *in, struct itimerval *out)
1719{
6072fc31
JS		 1720 static const struct timeval zero;
1721 static int atexit_done;
1722
1723 if (out != NULL)
1724 return errno = EINVAL,
1725 error("setitimer param 3 != NULL not implemented");
1726 if (!is_timeval_eq(&in->it_interval, &zero) &&
1727 !is_timeval_eq(&in->it_interval, &in->it_value))
1728 return errno = EINVAL,
1729 error("setitimer: it_interval must be zero or eq it_value");
1730
1731 if (timer_thread)
1732 stop_timer_thread();
1733
1734 if (is_timeval_eq(&in->it_value, &zero) &&
1735 is_timeval_eq(&in->it_interval, &zero))
1736 return 0;
1737
1738 timer_interval = in->it_value.tv_sec * 1000 + in->it_value.tv_usec / 1000;
1739 one_shot = is_timeval_eq(&in->it_interval, &zero);
1740 if (!atexit_done) {
1741 atexit(stop_timer_thread);
1742 atexit_done = 1;
1743 }
1744 return start_timer_thread();
f4626df5
JS		 1745}
1746
1747int sigaction(int sig, struct sigaction *in, struct sigaction *out)
1748{
6072fc31
JS		 1749 if (sig != SIGALRM)
1750 return errno = EINVAL,
1751 error("sigaction only implemented for SIGALRM");
1752 if (out != NULL)
1753 return errno = EINVAL,
1754 error("sigaction: param 3 != NULL not implemented");
1755
1756 timer_fn = in->sa_handler;
1757 return 0;
1758}
1759
1760#undef signal
1761sig_handler_t mingw_signal(int sig, sig_handler_t handler)
1762{
a4540658 1763 sig_handler_t old;
176478a8
EFL		 1764
1765 switch (sig) {
1766 case SIGALRM:
a4540658 1767 old = timer_fn;
176478a8
EFL		 1768 timer_fn = handler;
1769 break;
1770
1771 case SIGINT:
a4540658 1772 old = sigint_fn;
176478a8
EFL		 1773 sigint_fn = handler;
1774 break;
1775
1776 default:
6072fc31 1777 return signal(sig, handler);
176478a8
EFL		 1778 }
1779
6072fc31 1780 return old;
f4626df5 1781}
4804aabc 1782
176478a8
EFL		 1783#undef raise
1784int mingw_raise(int sig)
1785{
1786 switch (sig) {
1787 case SIGALRM:
1788 if (timer_fn == SIG_DFL) {
1789 if (isatty(STDERR_FILENO))
1790 fputs("Alarm clock\n", stderr);
1791 exit(128 + SIGALRM);
1792 } else if (timer_fn != SIG_IGN)
1793 timer_fn(SIGALRM);
1794 return 0;
1795
1796 case SIGINT:
1797 if (sigint_fn == SIG_DFL)
1798 exit(128 + SIGINT);
1799 else if (sigint_fn != SIG_IGN)
1800 sigint_fn(SIGINT);
1801 return 0;
1802
1803 default:
1804 return raise(sig);
1805 }
1806}
1807
1808
4804aabc
SP		 1809static const char *make_backslash_path(const char *path)
1810{
1811 static char buf[PATH_MAX + 1];
1812 char *c;
1813
1814 if (strlcpy(buf, path, PATH_MAX) >= PATH_MAX)
1815 die("Too long path: %.*s", 60, path);
1816
1817 for (c = buf; *c; c++) {
1818 if (*c == '/')
1819 *c = '\\';
1820 }
1821 return buf;
1822}
1823
1824void mingw_open_html(const char *unixpath)
1825{
1826 const char *htmlpath = make_backslash_path(unixpath);
928500e0
JS		 1827 typedef HINSTANCE (WINAPI *T)(HWND, const char *,
1828 const char *, const char *, const char *, INT);
1829 T ShellExecute;
1830 HMODULE shell32;
442dada2 1831 int r;
928500e0
JS		 1832
1833 shell32 = LoadLibrary("shell32.dll");
1834 if (!shell32)
1835 die("cannot load shell32.dll");
1836 ShellExecute = (T)GetProcAddress(shell32, "ShellExecuteA");
1837 if (!ShellExecute)
1838 die("cannot run browser");
1839
4804aabc 1840 printf("Launching default browser to display HTML ...\n");
442dada2 1841 r = (int)ShellExecute(NULL, "open", htmlpath, NULL, "\\", SW_SHOWNORMAL);
928500e0 1842 FreeLibrary(shell32);
442dada2
PT		 1843 /* see the MSDN documentation referring to the result codes here */
1844 if (r <= 32) {
1845 die("failed to launch browser for %.*s", MAX_PATH, unixpath);
1846 }
4804aabc 1847}
7be401e0
PK		 1848
1849int link(const char *oldpath, const char *newpath)
1850{
85faec9d 1851 typedef BOOL (WINAPI *T)(LPCWSTR, LPCWSTR, LPSECURITY_ATTRIBUTES);
7be401e0 1852 static T create_hard_link = NULL;
85faec9d
KB		 1853 wchar_t woldpath[MAX_PATH], wnewpath[MAX_PATH];
1854 if (xutftowcs_path(woldpath, oldpath) < 0 ||
1855 xutftowcs_path(wnewpath, newpath) < 0)
1856 return -1;
1857
7be401e0
PK		 1858 if (!create_hard_link) {
1859 create_hard_link = (T) GetProcAddress(
85faec9d 1860 GetModuleHandle("kernel32.dll"), "CreateHardLinkW");
7be401e0
PK		 1861 if (!create_hard_link)
1862 create_hard_link = (T)-1;
1863 }
1864 if (create_hard_link == (T)-1) {
1865 errno = ENOSYS;
1866 return -1;
1867 }
85faec9d 1868 if (!create_hard_link(wnewpath, woldpath, NULL)) {
7be401e0
PK		 1869 errno = err_win_to_posix(GetLastError());
1870 return -1;
1871 }
1872 return 0;
1873}
0dbbbc1e 1874
956d86d1 1875pid_t waitpid(pid_t pid, int *status, int options)
52de4db5
EFL		 1876{
1877 HANDLE h = OpenProcess(SYNCHRONIZE | PROCESS_QUERY_INFORMATION,
1878 FALSE, pid);
1879 if (!h) {
1880 errno = ECHILD;
1881 return -1;
1882 }
1883
ef7108ca
EFL		 1884 if (pid > 0 && options & WNOHANG) {
1885 if (WAIT_OBJECT_0 != WaitForSingleObject(h, 0)) {
1886 CloseHandle(h);
1887 return 0;
1888 }
1889 options &= ~WNOHANG;
1890 }
1891
52de4db5
EFL		 1892 if (options == 0) {
1893 struct pinfo_t **ppinfo;
1894 if (WaitForSingleObject(h, INFINITE) != WAIT_OBJECT_0) {
1895 CloseHandle(h);
1896 return 0;
1897 }
1898
1899 if (status)
1900 GetExitCodeProcess(h, (LPDWORD)status);
1901
1902 EnterCriticalSection(&pinfo_cs);
1903
1904 ppinfo = &pinfo;
1905 while (*ppinfo) {
1906 struct pinfo_t *info = *ppinfo;
1907 if (info->pid == pid) {
1908 CloseHandle(info->proc);
1909 *ppinfo = info->next;
1910 free(info);
1911 break;
1912 }
1913 ppinfo = &info->next;
1914 }
1915
1916 LeaveCriticalSection(&pinfo_cs);
1917
1918 CloseHandle(h);
1919 return pid;
1920 }
1921 CloseHandle(h);
1922
1923 errno = EINVAL;
1924 return -1;
1925}
c2369bdf
CZ		 1926
1927int mingw_offset_1st_component(const char *path)
1928{
1929 int offset = 0;
1930 if (has_dos_drive_prefix(path))
1931 offset = 2;
1932
1933 /* unc paths */
1934 else if (is_dir_sep(path[0]) && is_dir_sep(path[1])) {
1935
1936 /* skip server name */
1937 char *pos = strpbrk(path + 2, "\\/");
1938 if (!pos)
1939 return 0; /* Error: malformed unc path */
1940
1941 do {
1942 pos++;
1943 } while (*pos && !is_dir_sep(*pos));
1944
1945 offset = pos - path;
1946 }
1947
1948 return offset + is_dir_sep(path[offset]);
1949}
13f1df43 1950
1c950a59
KB		 1951int xutftowcsn(wchar_t *wcs, const char *utfs, size_t wcslen, int utflen)
1952{
1953 int upos = 0, wpos = 0;
1954 const unsigned char *utf = (const unsigned char*) utfs;
1955 if (!utf || !wcs || wcslen < 1) {
1956 errno = EINVAL;
1957 return -1;
1958 }
1959 /* reserve space for \0 */
1960 wcslen--;
1961 if (utflen < 0)
1962 utflen = INT_MAX;
1963
1964 while (upos < utflen) {
1965 int c = utf[upos++] & 0xff;
1966 if (utflen == INT_MAX && c == 0)
1967 break;
1968
1969 if (wpos >= wcslen) {
1970 wcs[wpos] = 0;
1971 errno = ERANGE;
1972 return -1;
1973 }
1974
1975 if (c < 0x80) {
1976 /* ASCII */
1977 wcs[wpos++] = c;
1978 } else if (c >= 0xc2 && c < 0xe0 && upos < utflen &&
1979 (utf[upos] & 0xc0) == 0x80) {
1980 /* 2-byte utf-8 */
1981 c = ((c & 0x1f) << 6);
1982 c |= (utf[upos++] & 0x3f);
1983 wcs[wpos++] = c;
1984 } else if (c >= 0xe0 && c < 0xf0 && upos + 1 < utflen &&
1985 !(c == 0xe0 && utf[upos] < 0xa0) && /* over-long encoding */
1986 (utf[upos] & 0xc0) == 0x80 &&
1987 (utf[upos + 1] & 0xc0) == 0x80) {
1988 /* 3-byte utf-8 */
1989 c = ((c & 0x0f) << 12);
1990 c |= ((utf[upos++] & 0x3f) << 6);
1991 c |= (utf[upos++] & 0x3f);
1992 wcs[wpos++] = c;
1993 } else if (c >= 0xf0 && c < 0xf5 && upos + 2 < utflen &&
1994 wpos + 1 < wcslen &&
1995 !(c == 0xf0 && utf[upos] < 0x90) && /* over-long encoding */
1996 !(c == 0xf4 && utf[upos] >= 0x90) && /* > \u10ffff */
1997 (utf[upos] & 0xc0) == 0x80 &&
1998 (utf[upos + 1] & 0xc0) == 0x80 &&
1999 (utf[upos + 2] & 0xc0) == 0x80) {
2000 /* 4-byte utf-8: convert to \ud8xx \udcxx surrogate pair */
2001 c = ((c & 0x07) << 18);
2002 c |= ((utf[upos++] & 0x3f) << 12);
2003 c |= ((utf[upos++] & 0x3f) << 6);
2004 c |= (utf[upos++] & 0x3f);
2005 c -= 0x10000;
2006 wcs[wpos++] = 0xd800 | (c >> 10);
2007 wcs[wpos++] = 0xdc00 | (c & 0x3ff);
2008 } else if (c >= 0xa0) {
2009 /* invalid utf-8 byte, printable unicode char: convert 1:1 */
2010 wcs[wpos++] = c;
2011 } else {
2012 /* invalid utf-8 byte, non-printable unicode: convert to hex */
2013 static const char *hex = "0123456789abcdef";
2014 wcs[wpos++] = hex[c >> 4];
2015 if (wpos < wcslen)
2016 wcs[wpos++] = hex[c & 0x0f];
2017 }
2018 }
2019 wcs[wpos] = 0;
2020 return wpos;
2021}
2022
2023int xwcstoutf(char *utf, const wchar_t *wcs, size_t utflen)
2024{
2025 if (!wcs || !utf || utflen < 1) {
2026 errno = EINVAL;
2027 return -1;
2028 }
2029 utflen = WideCharToMultiByte(CP_UTF8, 0, wcs, -1, utf, utflen, NULL, NULL);
2030 if (utflen)
2031 return utflen - 1;
2032 errno = ERANGE;
2033 return -1;
2034}
2035
5901dc66
KB		 2036/*
2037 * Disable MSVCRT command line wildcard expansion (__getmainargs called from
2038 * mingw startup code, see init.c in mingw runtime).
2039 */
2040int _CRT_glob = 0;
2041
3f046148
KB		 2042typedef struct {
2043 int newmode;
2044} _startupinfo;
2045
2046extern int __wgetmainargs(int *argc, wchar_t ***argv, wchar_t ***env, int glob,
2047 _startupinfo *si);
2048
2049static NORETURN void die_startup()
2050{
2051 fputs("fatal: not enough memory for initialization", stderr);
2052 exit(128);
2053}
2054
13f1df43
KB		 2055void mingw_startup()
2056{
3f046148
KB		 2057 int i, len, maxlen, argc;
2058 char *buffer;
2059 wchar_t **wenv, **wargv;
2060 _startupinfo si;
2061
2062 /* get wide char arguments and environment */
2063 si.newmode = 0;
2064 if (__wgetmainargs(&argc, &wargv, &wenv, _CRT_glob, &si) < 0)
2065 die_startup();
2066
2067 /* determine size of argv and environ conversion buffer */
2068 maxlen = wcslen(_wpgmptr);
2069 for (i = 1; i < argc; i++)
2070 maxlen = max(maxlen, wcslen(wargv[i]));
b729f98f
KB		 2071 for (i = 0; wenv[i]; i++)
2072 maxlen = max(maxlen, wcslen(wenv[i]));
2073
2074 /* nedmalloc can't free CRT memory, allocate resizable environment list */
2075 environ = xcalloc(i + 1, sizeof(char*));
3f046148
KB		 2076
2077 /* allocate buffer (wchar_t encodes to max 3 UTF-8 bytes) */
2078 maxlen = 3 * maxlen + 1;
2079 buffer = xmalloc(maxlen);
2080
2081 /* convert command line arguments and environment to UTF-8 */
2082 len = xwcstoutf(buffer, _wpgmptr, maxlen);
2083 __argv[0] = xmemdupz(buffer, len);
2084 for (i = 1; i < argc; i++) {
2085 len = xwcstoutf(buffer, wargv[i], maxlen);
2086 __argv[i] = xmemdupz(buffer, len);
2087 }
b729f98f
KB		 2088 for (i = 0; wenv[i]; i++) {
2089 len = xwcstoutf(buffer, wenv[i], maxlen);
2090 environ[i] = xmemdupz(buffer, len);
2091 }
3f046148 2092 free(buffer);
13f1df43
KB		 2093
2094 /* initialize critical section for waitpid pinfo_t list */
2095 InitializeCriticalSection(&pinfo_cs);
2096
2097 /* set up default file mode and file modes for stdin/out/err */
2098 _fmode = _O_BINARY;
2099 _setmode(_fileno(stdin), _O_BINARY);
2100 _setmode(_fileno(stdout), _O_BINARY);
2101 _setmode(_fileno(stderr), _O_BINARY);
eac14f89
KB		 2102
2103 /* initialize Unicode console */
2104 winansi_init();
13f1df43 2105}
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