1 #include "../git-compat-util.h"
6 #include "../run-command.h"
8 #include "win32/lazyload.h"
12 #define HCAST(type, handle) ((type)(intptr_t)handle)
14 static const int delay
[] = { 0, 1, 10, 20, 40 };
16 int err_win_to_posix(DWORD winerr
)
20 case ERROR_ACCESS_DENIED
: error
= EACCES
; break;
21 case ERROR_ACCOUNT_DISABLED
: error
= EACCES
; break;
22 case ERROR_ACCOUNT_RESTRICTION
: error
= EACCES
; break;
23 case ERROR_ALREADY_ASSIGNED
: error
= EBUSY
; break;
24 case ERROR_ALREADY_EXISTS
: error
= EEXIST
; break;
25 case ERROR_ARITHMETIC_OVERFLOW
: error
= ERANGE
; break;
26 case ERROR_BAD_COMMAND
: error
= EIO
; break;
27 case ERROR_BAD_DEVICE
: error
= ENODEV
; break;
28 case ERROR_BAD_DRIVER_LEVEL
: error
= ENXIO
; break;
29 case ERROR_BAD_EXE_FORMAT
: error
= ENOEXEC
; break;
30 case ERROR_BAD_FORMAT
: error
= ENOEXEC
; break;
31 case ERROR_BAD_LENGTH
: error
= EINVAL
; break;
32 case ERROR_BAD_PATHNAME
: error
= ENOENT
; break;
33 case ERROR_BAD_PIPE
: error
= EPIPE
; break;
34 case ERROR_BAD_UNIT
: error
= ENODEV
; break;
35 case ERROR_BAD_USERNAME
: error
= EINVAL
; break;
36 case ERROR_BROKEN_PIPE
: error
= EPIPE
; break;
37 case ERROR_BUFFER_OVERFLOW
: error
= ENAMETOOLONG
; break;
38 case ERROR_BUSY
: error
= EBUSY
; break;
39 case ERROR_BUSY_DRIVE
: error
= EBUSY
; break;
40 case ERROR_CALL_NOT_IMPLEMENTED
: error
= ENOSYS
; break;
41 case ERROR_CANNOT_MAKE
: error
= EACCES
; break;
42 case ERROR_CANTOPEN
: error
= EIO
; break;
43 case ERROR_CANTREAD
: error
= EIO
; break;
44 case ERROR_CANTWRITE
: error
= EIO
; break;
45 case ERROR_CRC
: error
= EIO
; break;
46 case ERROR_CURRENT_DIRECTORY
: error
= EACCES
; break;
47 case ERROR_DEVICE_IN_USE
: error
= EBUSY
; break;
48 case ERROR_DEV_NOT_EXIST
: error
= ENODEV
; break;
49 case ERROR_DIRECTORY
: error
= EINVAL
; break;
50 case ERROR_DIR_NOT_EMPTY
: error
= ENOTEMPTY
; break;
51 case ERROR_DISK_CHANGE
: error
= EIO
; break;
52 case ERROR_DISK_FULL
: error
= ENOSPC
; break;
53 case ERROR_DRIVE_LOCKED
: error
= EBUSY
; break;
54 case ERROR_ENVVAR_NOT_FOUND
: error
= EINVAL
; break;
55 case ERROR_EXE_MARKED_INVALID
: error
= ENOEXEC
; break;
56 case ERROR_FILENAME_EXCED_RANGE
: error
= ENAMETOOLONG
; break;
57 case ERROR_FILE_EXISTS
: error
= EEXIST
; break;
58 case ERROR_FILE_INVALID
: error
= ENODEV
; break;
59 case ERROR_FILE_NOT_FOUND
: error
= ENOENT
; break;
60 case ERROR_GEN_FAILURE
: error
= EIO
; break;
61 case ERROR_HANDLE_DISK_FULL
: error
= ENOSPC
; break;
62 case ERROR_INSUFFICIENT_BUFFER
: error
= ENOMEM
; break;
63 case ERROR_INVALID_ACCESS
: error
= EACCES
; break;
64 case ERROR_INVALID_ADDRESS
: error
= EFAULT
; break;
65 case ERROR_INVALID_BLOCK
: error
= EFAULT
; break;
66 case ERROR_INVALID_DATA
: error
= EINVAL
; break;
67 case ERROR_INVALID_DRIVE
: error
= ENODEV
; break;
68 case ERROR_INVALID_EXE_SIGNATURE
: error
= ENOEXEC
; break;
69 case ERROR_INVALID_FLAGS
: error
= EINVAL
; break;
70 case ERROR_INVALID_FUNCTION
: error
= ENOSYS
; break;
71 case ERROR_INVALID_HANDLE
: error
= EBADF
; break;
72 case ERROR_INVALID_LOGON_HOURS
: error
= EACCES
; break;
73 case ERROR_INVALID_NAME
: error
= EINVAL
; break;
74 case ERROR_INVALID_OWNER
: error
= EINVAL
; break;
75 case ERROR_INVALID_PARAMETER
: error
= EINVAL
; break;
76 case ERROR_INVALID_PASSWORD
: error
= EPERM
; break;
77 case ERROR_INVALID_PRIMARY_GROUP
: error
= EINVAL
; break;
78 case ERROR_INVALID_SIGNAL_NUMBER
: error
= EINVAL
; break;
79 case ERROR_INVALID_TARGET_HANDLE
: error
= EIO
; break;
80 case ERROR_INVALID_WORKSTATION
: error
= EACCES
; break;
81 case ERROR_IO_DEVICE
: error
= EIO
; break;
82 case ERROR_IO_INCOMPLETE
: error
= EINTR
; break;
83 case ERROR_LOCKED
: error
= EBUSY
; break;
84 case ERROR_LOCK_VIOLATION
: error
= EACCES
; break;
85 case ERROR_LOGON_FAILURE
: error
= EACCES
; break;
86 case ERROR_MAPPED_ALIGNMENT
: error
= EINVAL
; break;
87 case ERROR_META_EXPANSION_TOO_LONG
: error
= E2BIG
; break;
88 case ERROR_MORE_DATA
: error
= EPIPE
; break;
89 case ERROR_NEGATIVE_SEEK
: error
= ESPIPE
; break;
90 case ERROR_NOACCESS
: error
= EFAULT
; break;
91 case ERROR_NONE_MAPPED
: error
= EINVAL
; break;
92 case ERROR_NOT_ENOUGH_MEMORY
: error
= ENOMEM
; break;
93 case ERROR_NOT_READY
: error
= EAGAIN
; break;
94 case ERROR_NOT_SAME_DEVICE
: error
= EXDEV
; break;
95 case ERROR_NO_DATA
: error
= EPIPE
; break;
96 case ERROR_NO_MORE_SEARCH_HANDLES
: error
= EIO
; break;
97 case ERROR_NO_PROC_SLOTS
: error
= EAGAIN
; break;
98 case ERROR_NO_SUCH_PRIVILEGE
: error
= EACCES
; break;
99 case ERROR_OPEN_FAILED
: error
= EIO
; break;
100 case ERROR_OPEN_FILES
: error
= EBUSY
; break;
101 case ERROR_OPERATION_ABORTED
: error
= EINTR
; break;
102 case ERROR_OUTOFMEMORY
: error
= ENOMEM
; break;
103 case ERROR_PASSWORD_EXPIRED
: error
= EACCES
; break;
104 case ERROR_PATH_BUSY
: error
= EBUSY
; break;
105 case ERROR_PATH_NOT_FOUND
: error
= ENOENT
; break;
106 case ERROR_PIPE_BUSY
: error
= EBUSY
; break;
107 case ERROR_PIPE_CONNECTED
: error
= EPIPE
; break;
108 case ERROR_PIPE_LISTENING
: error
= EPIPE
; break;
109 case ERROR_PIPE_NOT_CONNECTED
: error
= EPIPE
; break;
110 case ERROR_PRIVILEGE_NOT_HELD
: error
= EACCES
; break;
111 case ERROR_READ_FAULT
: error
= EIO
; break;
112 case ERROR_SEEK
: error
= EIO
; break;
113 case ERROR_SEEK_ON_DEVICE
: error
= ESPIPE
; break;
114 case ERROR_SHARING_BUFFER_EXCEEDED
: error
= ENFILE
; break;
115 case ERROR_SHARING_VIOLATION
: error
= EACCES
; break;
116 case ERROR_STACK_OVERFLOW
: error
= ENOMEM
; break;
117 case ERROR_SWAPERROR
: error
= ENOENT
; break;
118 case ERROR_TOO_MANY_MODULES
: error
= EMFILE
; break;
119 case ERROR_TOO_MANY_OPEN_FILES
: error
= EMFILE
; break;
120 case ERROR_UNRECOGNIZED_MEDIA
: error
= ENXIO
; break;
121 case ERROR_UNRECOGNIZED_VOLUME
: error
= ENODEV
; break;
122 case ERROR_WAIT_NO_CHILDREN
: error
= ECHILD
; break;
123 case ERROR_WRITE_FAULT
: error
= EIO
; break;
124 case ERROR_WRITE_PROTECT
: error
= EROFS
; break;
129 static inline int is_file_in_use_error(DWORD errcode
)
132 case ERROR_SHARING_VIOLATION
:
133 case ERROR_ACCESS_DENIED
:
140 static int read_yes_no_answer(void)
144 if (fgets(answer
, sizeof(answer
), stdin
)) {
145 size_t answer_len
= strlen(answer
);
146 int got_full_line
= 0, c
;
148 /* remove the newline */
149 if (answer_len
>= 2 && answer
[answer_len
-2] == '\r') {
150 answer
[answer_len
-2] = '\0';
152 } else if (answer_len
>= 1 && answer
[answer_len
-1] == '\n') {
153 answer
[answer_len
-1] = '\0';
156 /* flush the buffer in case we did not get the full line */
158 while ((c
= getchar()) != EOF
&& c
!= '\n')
161 /* we could not read, return the
162 * default answer which is no */
165 if (tolower(answer
[0]) == 'y' && !answer
[1])
167 if (!strncasecmp(answer
, "yes", sizeof(answer
)))
169 if (tolower(answer
[0]) == 'n' && !answer
[1])
171 if (!strncasecmp(answer
, "no", sizeof(answer
)))
174 /* did not find an answer we understand */
178 static int ask_yes_no_if_possible(const char *format
, ...)
181 const char *retry_hook
[] = { NULL
, NULL
, NULL
};
184 va_start(args
, format
);
185 vsnprintf(question
, sizeof(question
), format
, args
);
188 if ((retry_hook
[0] = mingw_getenv("GIT_ASK_YESNO"))) {
189 retry_hook
[1] = question
;
190 return !run_command_v_opt(retry_hook
, 0);
193 if (!isatty(_fileno(stdin
)) || !isatty(_fileno(stderr
)))
198 fprintf(stderr
, "%s (y/n) ", question
);
200 if ((answer
= read_yes_no_answer()) >= 0)
203 fprintf(stderr
, "Sorry, I did not understand your answer. "
204 "Please type 'y' or 'n'\n");
209 enum hide_dotfiles_type
{
210 HIDE_DOTFILES_FALSE
= 0,
212 HIDE_DOTFILES_DOTGITONLY
215 static enum hide_dotfiles_type hide_dotfiles
= HIDE_DOTFILES_DOTGITONLY
;
216 static char *unset_environment_variables
;
218 int mingw_core_config(const char *var
, const char *value
, void *cb
)
220 if (!strcmp(var
, "core.hidedotfiles")) {
221 if (value
&& !strcasecmp(value
, "dotgitonly"))
222 hide_dotfiles
= HIDE_DOTFILES_DOTGITONLY
;
224 hide_dotfiles
= git_config_bool(var
, value
);
228 if (!strcmp(var
, "core.unsetenvvars")) {
229 free(unset_environment_variables
);
230 unset_environment_variables
= xstrdup(value
);
237 /* Normalizes NT paths as returned by some low-level APIs. */
238 static wchar_t *normalize_ntpath(wchar_t *wbuf
)
241 /* fix absolute path prefixes */
242 if (wbuf
[0] == '\\') {
243 /* strip NT namespace prefixes */
244 if (!wcsncmp(wbuf
, L
"\\??\\", 4) ||
245 !wcsncmp(wbuf
, L
"\\\\?\\", 4))
247 else if (!wcsnicmp(wbuf
, L
"\\DosDevices\\", 12))
249 /* replace remaining '...UNC\' with '\\' */
250 if (!wcsnicmp(wbuf
, L
"UNC\\", 4)) {
255 /* convert backslashes to slashes */
256 for (i
= 0; wbuf
[i
]; i
++)
262 int mingw_unlink(const char *pathname
)
265 wchar_t wpathname
[MAX_PATH
];
266 if (xutftowcs_path(wpathname
, pathname
) < 0)
269 /* read-only files cannot be removed */
270 _wchmod(wpathname
, 0666);
271 while ((ret
= _wunlink(wpathname
)) == -1 && tries
< ARRAY_SIZE(delay
)) {
272 if (!is_file_in_use_error(GetLastError()))
275 * We assume that some other process had the source or
276 * destination file open at the wrong moment and retry.
277 * In order to give the other process a higher chance to
278 * complete its operation, we give up our time slice now.
279 * If we have to retry again, we do sleep a bit.
284 while (ret
== -1 && is_file_in_use_error(GetLastError()) &&
285 ask_yes_no_if_possible("Unlink of file '%s' failed. "
286 "Should I try again?", pathname
))
287 ret
= _wunlink(wpathname
);
291 static int is_dir_empty(const wchar_t *wpath
)
293 WIN32_FIND_DATAW findbuf
;
295 wchar_t wbuf
[MAX_PATH
+ 2];
297 wcscat(wbuf
, L
"\\*");
298 handle
= FindFirstFileW(wbuf
, &findbuf
);
299 if (handle
== INVALID_HANDLE_VALUE
)
300 return GetLastError() == ERROR_NO_MORE_FILES
;
302 while (!wcscmp(findbuf
.cFileName
, L
".") ||
303 !wcscmp(findbuf
.cFileName
, L
".."))
304 if (!FindNextFileW(handle
, &findbuf
)) {
305 DWORD err
= GetLastError();
307 return err
== ERROR_NO_MORE_FILES
;
313 int mingw_rmdir(const char *pathname
)
316 wchar_t wpathname
[MAX_PATH
];
317 if (xutftowcs_path(wpathname
, pathname
) < 0)
320 while ((ret
= _wrmdir(wpathname
)) == -1 && tries
< ARRAY_SIZE(delay
)) {
321 if (!is_file_in_use_error(GetLastError()))
322 errno
= err_win_to_posix(GetLastError());
325 if (!is_dir_empty(wpathname
)) {
330 * We assume that some other process had the source or
331 * destination file open at the wrong moment and retry.
332 * In order to give the other process a higher chance to
333 * complete its operation, we give up our time slice now.
334 * If we have to retry again, we do sleep a bit.
339 while (ret
== -1 && errno
== EACCES
&& is_file_in_use_error(GetLastError()) &&
340 ask_yes_no_if_possible("Deletion of directory '%s' failed. "
341 "Should I try again?", pathname
))
342 ret
= _wrmdir(wpathname
);
346 static inline int needs_hiding(const char *path
)
348 const char *basename
;
350 if (hide_dotfiles
== HIDE_DOTFILES_FALSE
)
353 /* We cannot use basename(), as it would remove trailing slashes */
354 win32_skip_dos_drive_prefix((char **)&path
);
358 for (basename
= path
; *path
; path
++)
359 if (is_dir_sep(*path
)) {
362 } while (is_dir_sep(*path
));
363 /* ignore trailing slashes */
368 if (hide_dotfiles
== HIDE_DOTFILES_TRUE
)
369 return *basename
== '.';
371 assert(hide_dotfiles
== HIDE_DOTFILES_DOTGITONLY
);
372 return !strncasecmp(".git", basename
, 4) &&
373 (!basename
[4] || is_dir_sep(basename
[4]));
376 static int set_hidden_flag(const wchar_t *path
, int set
)
378 DWORD original
= GetFileAttributesW(path
), modified
;
380 modified
= original
| FILE_ATTRIBUTE_HIDDEN
;
382 modified
= original
& ~FILE_ATTRIBUTE_HIDDEN
;
383 if (original
== modified
|| SetFileAttributesW(path
, modified
))
385 errno
= err_win_to_posix(GetLastError());
389 int mingw_mkdir(const char *path
, int mode
)
392 wchar_t wpath
[MAX_PATH
];
393 if (xutftowcs_path(wpath
, path
) < 0)
395 ret
= _wmkdir(wpath
);
396 if (!ret
&& needs_hiding(path
))
397 return set_hidden_flag(wpath
, 1);
402 * Calling CreateFile() using FILE_APPEND_DATA and without FILE_WRITE_DATA
403 * is documented in [1] as opening a writable file handle in append mode.
404 * (It is believed that) this is atomic since it is maintained by the
405 * kernel unlike the O_APPEND flag which is racily maintained by the CRT.
407 * [1] https://docs.microsoft.com/en-us/windows/desktop/fileio/file-access-rights-constants
409 * This trick does not appear to work for named pipes. Instead it creates
410 * a named pipe client handle that cannot be written to. Callers should
411 * just use the regular _wopen() for them. (And since client handle gets
412 * bound to a unique server handle, it isn't really an issue.)
414 static int mingw_open_append(wchar_t const *wfilename
, int oflags
, ...)
418 DWORD create
= (oflags
& O_CREAT
) ? OPEN_ALWAYS
: OPEN_EXISTING
;
420 /* only these flags are supported */
421 if ((oflags
& ~O_CREAT
) != (O_WRONLY
| O_APPEND
))
422 return errno
= ENOSYS
, -1;
425 * FILE_SHARE_WRITE is required to permit child processes
426 * to append to the file.
428 handle
= CreateFileW(wfilename
, FILE_APPEND_DATA
,
429 FILE_SHARE_WRITE
| FILE_SHARE_READ
,
430 NULL
, create
, FILE_ATTRIBUTE_NORMAL
, NULL
);
431 if (handle
== INVALID_HANDLE_VALUE
)
432 return errno
= err_win_to_posix(GetLastError()), -1;
435 * No O_APPEND here, because the CRT uses it only to reset the
436 * file pointer to EOF before each write(); but that is not
437 * necessary (and may lead to races) for a file created with
440 fd
= _open_osfhandle((intptr_t)handle
, O_BINARY
);
447 * Does the pathname map to the local named pipe filesystem?
448 * That is, does it have a "//./pipe/" prefix?
450 static int is_local_named_pipe_path(const char *filename
)
452 return (is_dir_sep(filename
[0]) &&
453 is_dir_sep(filename
[1]) &&
454 filename
[2] == '.' &&
455 is_dir_sep(filename
[3]) &&
456 !strncasecmp(filename
+4, "pipe", 4) &&
457 is_dir_sep(filename
[8]) &&
461 int mingw_open (const char *filename
, int oflags
, ...)
463 typedef int (*open_fn_t
)(wchar_t const *wfilename
, int oflags
, ...);
467 wchar_t wfilename
[MAX_PATH
];
470 va_start(args
, oflags
);
471 mode
= va_arg(args
, int);
474 if (filename
&& !strcmp(filename
, "/dev/null"))
477 if ((oflags
& O_APPEND
) && !is_local_named_pipe_path(filename
))
478 open_fn
= mingw_open_append
;
482 if (xutftowcs_path(wfilename
, filename
) < 0)
484 fd
= open_fn(wfilename
, oflags
, mode
);
486 if (fd
< 0 && (oflags
& O_ACCMODE
) != O_RDONLY
&& errno
== EACCES
) {
487 DWORD attrs
= GetFileAttributesW(wfilename
);
488 if (attrs
!= INVALID_FILE_ATTRIBUTES
&& (attrs
& FILE_ATTRIBUTE_DIRECTORY
))
491 if ((oflags
& O_CREAT
) && needs_hiding(filename
)) {
493 * Internally, _wopen() uses the CreateFile() API which errors
494 * out with an ERROR_ACCESS_DENIED if CREATE_ALWAYS was
495 * specified and an already existing file's attributes do not
496 * match *exactly*. As there is no mode or flag we can set that
497 * would correspond to FILE_ATTRIBUTE_HIDDEN, let's just try
498 * again *without* the O_CREAT flag (that corresponds to the
499 * CREATE_ALWAYS flag of CreateFile()).
501 if (fd
< 0 && errno
== EACCES
)
502 fd
= open_fn(wfilename
, oflags
& ~O_CREAT
, mode
);
503 if (fd
>= 0 && set_hidden_flag(wfilename
, 1))
504 warning("could not mark '%s' as hidden.", filename
);
509 static BOOL WINAPI
ctrl_ignore(DWORD type
)
515 int mingw_fgetc(FILE *stream
)
518 if (!isatty(_fileno(stream
)))
519 return fgetc(stream
);
521 SetConsoleCtrlHandler(ctrl_ignore
, TRUE
);
524 if (ch
!= EOF
|| GetLastError() != ERROR_OPERATION_ABORTED
)
527 /* Ctrl+C was pressed, simulate SIGINT and retry */
530 SetConsoleCtrlHandler(ctrl_ignore
, FALSE
);
535 FILE *mingw_fopen (const char *filename
, const char *otype
)
537 int hide
= needs_hiding(filename
);
539 wchar_t wfilename
[MAX_PATH
], wotype
[4];
540 if (filename
&& !strcmp(filename
, "/dev/null"))
542 if (xutftowcs_path(wfilename
, filename
) < 0 ||
543 xutftowcs(wotype
, otype
, ARRAY_SIZE(wotype
)) < 0)
545 if (hide
&& !access(filename
, F_OK
) && set_hidden_flag(wfilename
, 0)) {
546 error("could not unhide %s", filename
);
549 file
= _wfopen(wfilename
, wotype
);
550 if (!file
&& GetLastError() == ERROR_INVALID_NAME
)
552 if (file
&& hide
&& set_hidden_flag(wfilename
, 1))
553 warning("could not mark '%s' as hidden.", filename
);
557 FILE *mingw_freopen (const char *filename
, const char *otype
, FILE *stream
)
559 int hide
= needs_hiding(filename
);
561 wchar_t wfilename
[MAX_PATH
], wotype
[4];
562 if (filename
&& !strcmp(filename
, "/dev/null"))
564 if (xutftowcs_path(wfilename
, filename
) < 0 ||
565 xutftowcs(wotype
, otype
, ARRAY_SIZE(wotype
)) < 0)
567 if (hide
&& !access(filename
, F_OK
) && set_hidden_flag(wfilename
, 0)) {
568 error("could not unhide %s", filename
);
571 file
= _wfreopen(wfilename
, wotype
, stream
);
572 if (file
&& hide
&& set_hidden_flag(wfilename
, 1))
573 warning("could not mark '%s' as hidden.", filename
);
578 int mingw_fflush(FILE *stream
)
580 int ret
= fflush(stream
);
583 * write() is used behind the scenes of stdio output functions.
584 * Since git code does not check for errors after each stdio write
585 * operation, it can happen that write() is called by a later
586 * stdio function even if an earlier write() call failed. In the
587 * case of a pipe whose readable end was closed, only the first
588 * call to write() reports EPIPE on Windows. Subsequent write()
589 * calls report EINVAL. It is impossible to notice whether this
590 * fflush invocation triggered such a case, therefore, we have to
591 * catch all EINVAL errors whole-sale.
593 if (ret
&& errno
== EINVAL
)
600 ssize_t
mingw_write(int fd
, const void *buf
, size_t len
)
602 ssize_t result
= write(fd
, buf
, len
);
604 if (result
< 0 && errno
== EINVAL
&& buf
) {
605 /* check if fd is a pipe */
606 HANDLE h
= (HANDLE
) _get_osfhandle(fd
);
607 if (GetFileType(h
) == FILE_TYPE_PIPE
)
616 int mingw_access(const char *filename
, int mode
)
618 wchar_t wfilename
[MAX_PATH
];
619 if (xutftowcs_path(wfilename
, filename
) < 0)
621 /* X_OK is not supported by the MSVCRT version */
622 return _waccess(wfilename
, mode
& ~X_OK
);
625 int mingw_chdir(const char *dirname
)
627 wchar_t wdirname
[MAX_PATH
];
628 if (xutftowcs_path(wdirname
, dirname
) < 0)
630 return _wchdir(wdirname
);
633 int mingw_chmod(const char *filename
, int mode
)
635 wchar_t wfilename
[MAX_PATH
];
636 if (xutftowcs_path(wfilename
, filename
) < 0)
638 return _wchmod(wfilename
, mode
);
642 * The unit of FILETIME is 100-nanoseconds since January 1, 1601, UTC.
643 * Returns the 100-nanoseconds ("hekto nanoseconds") since the epoch.
645 static inline long long filetime_to_hnsec(const FILETIME
*ft
)
647 long long winTime
= ((long long)ft
->dwHighDateTime
<< 32) + ft
->dwLowDateTime
;
648 /* Windows to Unix Epoch conversion */
649 return winTime
- 116444736000000000LL;
652 static inline void filetime_to_timespec(const FILETIME
*ft
, struct timespec
*ts
)
654 long long hnsec
= filetime_to_hnsec(ft
);
655 ts
->tv_sec
= (time_t)(hnsec
/ 10000000);
656 ts
->tv_nsec
= (hnsec
% 10000000) * 100;
660 * Verifies that safe_create_leading_directories() would succeed.
662 static int has_valid_directory_prefix(wchar_t *wfilename
)
664 int n
= wcslen(wfilename
);
667 wchar_t c
= wfilename
[--n
];
673 wfilename
[n
] = L
'\0';
674 attributes
= GetFileAttributesW(wfilename
);
676 if (attributes
== FILE_ATTRIBUTE_DIRECTORY
||
677 attributes
== FILE_ATTRIBUTE_DEVICE
)
679 if (attributes
== INVALID_FILE_ATTRIBUTES
)
680 switch (GetLastError()) {
681 case ERROR_PATH_NOT_FOUND
:
683 case ERROR_FILE_NOT_FOUND
:
684 /* This implies parent directory exists. */
692 /* We keep the do_lstat code in a separate function to avoid recursion.
693 * When a path ends with a slash, the stat will fail with ENOENT. In
694 * this case, we strip the trailing slashes and stat again.
696 * If follow is true then act like stat() and report on the link
697 * target. Otherwise report on the link itself.
699 static int do_lstat(int follow
, const char *file_name
, struct stat
*buf
)
701 WIN32_FILE_ATTRIBUTE_DATA fdata
;
702 wchar_t wfilename
[MAX_PATH
];
703 if (xutftowcs_path(wfilename
, file_name
) < 0)
706 if (GetFileAttributesExW(wfilename
, GetFileExInfoStandard
, &fdata
)) {
711 buf
->st_mode
= file_attr_to_st_mode(fdata
.dwFileAttributes
);
712 buf
->st_size
= fdata
.nFileSizeLow
|
713 (((off_t
)fdata
.nFileSizeHigh
)<<32);
714 buf
->st_dev
= buf
->st_rdev
= 0; /* not used by Git */
715 filetime_to_timespec(&(fdata
.ftLastAccessTime
), &(buf
->st_atim
));
716 filetime_to_timespec(&(fdata
.ftLastWriteTime
), &(buf
->st_mtim
));
717 filetime_to_timespec(&(fdata
.ftCreationTime
), &(buf
->st_ctim
));
718 if (fdata
.dwFileAttributes
& FILE_ATTRIBUTE_REPARSE_POINT
) {
719 WIN32_FIND_DATAW findbuf
;
720 HANDLE handle
= FindFirstFileW(wfilename
, &findbuf
);
721 if (handle
!= INVALID_HANDLE_VALUE
) {
722 if ((findbuf
.dwFileAttributes
& FILE_ATTRIBUTE_REPARSE_POINT
) &&
723 (findbuf
.dwReserved0
== IO_REPARSE_TAG_SYMLINK
)) {
725 char buffer
[MAXIMUM_REPARSE_DATA_BUFFER_SIZE
];
726 buf
->st_size
= readlink(file_name
, buffer
, MAXIMUM_REPARSE_DATA_BUFFER_SIZE
);
728 buf
->st_mode
= S_IFLNK
;
730 buf
->st_mode
|= S_IREAD
;
731 if (!(findbuf
.dwFileAttributes
& FILE_ATTRIBUTE_READONLY
))
732 buf
->st_mode
|= S_IWRITE
;
739 switch (GetLastError()) {
740 case ERROR_ACCESS_DENIED
:
741 case ERROR_SHARING_VIOLATION
:
742 case ERROR_LOCK_VIOLATION
:
743 case ERROR_SHARING_BUFFER_EXCEEDED
:
746 case ERROR_BUFFER_OVERFLOW
:
747 errno
= ENAMETOOLONG
;
749 case ERROR_NOT_ENOUGH_MEMORY
:
752 case ERROR_PATH_NOT_FOUND
:
753 if (!has_valid_directory_prefix(wfilename
)) {
765 /* We provide our own lstat/fstat functions, since the provided
766 * lstat/fstat functions are so slow. These stat functions are
767 * tailored for Git's usage (read: fast), and are not meant to be
768 * complete. Note that Git stat()s are redirected to mingw_lstat()
769 * too, since Windows doesn't really handle symlinks that well.
771 static int do_stat_internal(int follow
, const char *file_name
, struct stat
*buf
)
774 char alt_name
[PATH_MAX
];
776 if (!do_lstat(follow
, file_name
, buf
))
779 /* if file_name ended in a '/', Windows returned ENOENT;
780 * try again without trailing slashes
785 namelen
= strlen(file_name
);
786 if (namelen
&& file_name
[namelen
-1] != '/')
788 while (namelen
&& file_name
[namelen
-1] == '/')
790 if (!namelen
|| namelen
>= PATH_MAX
)
793 memcpy(alt_name
, file_name
, namelen
);
794 alt_name
[namelen
] = 0;
795 return do_lstat(follow
, alt_name
, buf
);
798 static int get_file_info_by_handle(HANDLE hnd
, struct stat
*buf
)
800 BY_HANDLE_FILE_INFORMATION fdata
;
802 if (!GetFileInformationByHandle(hnd
, &fdata
)) {
803 errno
= err_win_to_posix(GetLastError());
811 buf
->st_mode
= file_attr_to_st_mode(fdata
.dwFileAttributes
);
812 buf
->st_size
= fdata
.nFileSizeLow
|
813 (((off_t
)fdata
.nFileSizeHigh
)<<32);
814 buf
->st_dev
= buf
->st_rdev
= 0; /* not used by Git */
815 filetime_to_timespec(&(fdata
.ftLastAccessTime
), &(buf
->st_atim
));
816 filetime_to_timespec(&(fdata
.ftLastWriteTime
), &(buf
->st_mtim
));
817 filetime_to_timespec(&(fdata
.ftCreationTime
), &(buf
->st_ctim
));
821 int mingw_lstat(const char *file_name
, struct stat
*buf
)
823 return do_stat_internal(0, file_name
, buf
);
825 int mingw_stat(const char *file_name
, struct stat
*buf
)
827 return do_stat_internal(1, file_name
, buf
);
830 int mingw_fstat(int fd
, struct stat
*buf
)
832 HANDLE fh
= (HANDLE
)_get_osfhandle(fd
);
833 DWORD avail
, type
= GetFileType(fh
) & ~FILE_TYPE_REMOTE
;
837 return get_file_info_by_handle(fh
, buf
);
841 /* initialize stat fields */
842 memset(buf
, 0, sizeof(*buf
));
845 if (type
== FILE_TYPE_CHAR
) {
846 buf
->st_mode
= _S_IFCHR
;
848 buf
->st_mode
= _S_IFIFO
;
849 if (PeekNamedPipe(fh
, NULL
, 0, NULL
, &avail
, NULL
))
850 buf
->st_size
= avail
;
860 static inline void time_t_to_filetime(time_t t
, FILETIME
*ft
)
862 long long winTime
= t
* 10000000LL + 116444736000000000LL;
863 ft
->dwLowDateTime
= winTime
;
864 ft
->dwHighDateTime
= winTime
>> 32;
867 int mingw_utime (const char *file_name
, const struct utimbuf
*times
)
872 wchar_t wfilename
[MAX_PATH
];
873 if (xutftowcs_path(wfilename
, file_name
) < 0)
876 /* must have write permission */
877 attrs
= GetFileAttributesW(wfilename
);
878 if (attrs
!= INVALID_FILE_ATTRIBUTES
&&
879 (attrs
& FILE_ATTRIBUTE_READONLY
)) {
880 /* ignore errors here; open() will report them */
881 SetFileAttributesW(wfilename
, attrs
& ~FILE_ATTRIBUTE_READONLY
);
884 if ((fh
= _wopen(wfilename
, O_RDWR
| O_BINARY
)) < 0) {
890 time_t_to_filetime(times
->modtime
, &mft
);
891 time_t_to_filetime(times
->actime
, &aft
);
893 GetSystemTimeAsFileTime(&mft
);
896 if (!SetFileTime((HANDLE
)_get_osfhandle(fh
), NULL
, &aft
, &mft
)) {
904 if (attrs
!= INVALID_FILE_ATTRIBUTES
&&
905 (attrs
& FILE_ATTRIBUTE_READONLY
)) {
906 /* ignore errors again */
907 SetFileAttributesW(wfilename
, attrs
);
913 size_t mingw_strftime(char *s
, size_t max
,
914 const char *format
, const struct tm
*tm
)
916 size_t ret
= strftime(s
, max
, format
, tm
);
918 if (!ret
&& errno
== EINVAL
)
919 die("invalid strftime format: '%s'", format
);
923 unsigned int sleep (unsigned int seconds
)
929 char *mingw_mktemp(char *template)
931 wchar_t wtemplate
[MAX_PATH
];
932 if (xutftowcs_path(wtemplate
, template) < 0)
934 if (!_wmktemp(wtemplate
))
936 if (xwcstoutf(template, wtemplate
, strlen(template) + 1) < 0)
941 int mkstemp(char *template)
943 char *filename
= mktemp(template);
944 if (filename
== NULL
)
946 return open(filename
, O_RDWR
| O_CREAT
, 0600);
949 int gettimeofday(struct timeval
*tv
, void *tz
)
954 GetSystemTimeAsFileTime(&ft
);
955 hnsec
= filetime_to_hnsec(&ft
);
956 tv
->tv_sec
= hnsec
/ 10000000;
957 tv
->tv_usec
= (hnsec
% 10000000) / 10;
961 int pipe(int filedes
[2])
965 /* this creates non-inheritable handles */
966 if (!CreatePipe(&h
[0], &h
[1], NULL
, 8192)) {
967 errno
= err_win_to_posix(GetLastError());
970 filedes
[0] = _open_osfhandle(HCAST(int, h
[0]), O_NOINHERIT
);
971 if (filedes
[0] < 0) {
976 filedes
[1] = _open_osfhandle(HCAST(int, h
[1]), O_NOINHERIT
);
977 if (filedes
[1] < 0) {
985 struct tm
*gmtime_r(const time_t *timep
, struct tm
*result
)
987 /* gmtime() in MSVCRT.DLL is thread-safe, but not reentrant */
988 memcpy(result
, gmtime(timep
), sizeof(struct tm
));
992 struct tm
*localtime_r(const time_t *timep
, struct tm
*result
)
994 /* localtime() in MSVCRT.DLL is thread-safe, but not reentrant */
995 memcpy(result
, localtime(timep
), sizeof(struct tm
));
999 char *mingw_getcwd(char *pointer
, int len
)
1001 wchar_t cwd
[MAX_PATH
], wpointer
[MAX_PATH
];
1002 DWORD ret
= GetCurrentDirectoryW(ARRAY_SIZE(cwd
), cwd
);
1004 if (!ret
|| ret
>= ARRAY_SIZE(cwd
)) {
1005 errno
= ret
? ENAMETOOLONG
: err_win_to_posix(GetLastError());
1008 ret
= GetLongPathNameW(cwd
, wpointer
, ARRAY_SIZE(wpointer
));
1009 if (!ret
&& GetLastError() == ERROR_ACCESS_DENIED
) {
1010 HANDLE hnd
= CreateFileW(cwd
, 0,
1011 FILE_SHARE_READ
| FILE_SHARE_WRITE
| FILE_SHARE_DELETE
, NULL
,
1012 OPEN_EXISTING
, FILE_FLAG_BACKUP_SEMANTICS
, NULL
);
1013 if (hnd
== INVALID_HANDLE_VALUE
)
1015 ret
= GetFinalPathNameByHandleW(hnd
, wpointer
, ARRAY_SIZE(wpointer
), 0);
1017 if (!ret
|| ret
>= ARRAY_SIZE(wpointer
))
1019 if (xwcstoutf(pointer
, normalize_ntpath(wpointer
), len
) < 0)
1023 if (!ret
|| ret
>= ARRAY_SIZE(wpointer
))
1025 if (xwcstoutf(pointer
, wpointer
, len
) < 0)
1027 convert_slashes(pointer
);
1032 * See "Parsing C++ Command-Line Arguments" at Microsoft's Docs:
1033 * https://docs.microsoft.com/en-us/cpp/cpp/parsing-cpp-command-line-arguments
1035 static const char *quote_arg_msvc(const char *arg
)
1037 /* count chars to quote */
1039 int force_quotes
= 0;
1041 const char *p
= arg
;
1042 if (!*p
) force_quotes
= 1;
1044 if (isspace(*p
) || *p
== '*' || *p
== '?' || *p
== '{' || *p
== '\'')
1048 else if (*p
== '\\') {
1050 while (*p
== '\\') {
1062 if (!force_quotes
&& n
== 0)
1065 /* insert \ where necessary */
1066 d
= q
= xmalloc(st_add3(len
, n
, 3));
1071 else if (*arg
== '\\') {
1073 while (*arg
== '\\') {
1092 static const char *quote_arg_msys2(const char *arg
)
1094 struct strbuf buf
= STRBUF_INIT
;
1095 const char *p2
= arg
, *p
;
1097 for (p
= arg
; *p
; p
++) {
1098 int ws
= isspace(*p
);
1099 if (!ws
&& *p
!= '\\' && *p
!= '"' && *p
!= '{')
1102 strbuf_addch(&buf
, '"');
1104 strbuf_add(&buf
, p2
, p
- p2
);
1105 if (!ws
&& *p
!= '{')
1106 strbuf_addch(&buf
, '\\');
1111 strbuf_addch(&buf
, '"');
1115 strbuf_add(&buf
, p2
, p
- p2
),
1117 strbuf_addch(&buf
, '"');
1118 return strbuf_detach(&buf
, 0);
1121 static const char *parse_interpreter(const char *cmd
)
1123 static char buf
[100];
1127 /* don't even try a .exe */
1129 if (n
>= 4 && !strcasecmp(cmd
+n
-4, ".exe"))
1132 fd
= open(cmd
, O_RDONLY
);
1135 n
= read(fd
, buf
, sizeof(buf
)-1);
1137 if (n
< 4) /* at least '#!/x' and not error */
1140 if (buf
[0] != '#' || buf
[1] != '!')
1143 p
= buf
+ strcspn(buf
, "\r\n");
1148 if (!(p
= strrchr(buf
+2, '/')) && !(p
= strrchr(buf
+2, '\\')))
1151 if ((opt
= strchr(p
+1, ' ')))
1157 * exe_only means that we only want to detect .exe files, but not scripts
1158 * (which do not have an extension)
1160 static char *lookup_prog(const char *dir
, int dirlen
, const char *cmd
,
1161 int isexe
, int exe_only
)
1163 char path
[MAX_PATH
];
1164 wchar_t wpath
[MAX_PATH
];
1165 snprintf(path
, sizeof(path
), "%.*s\\%s.exe", dirlen
, dir
, cmd
);
1167 if (xutftowcs_path(wpath
, path
) < 0)
1170 if (!isexe
&& _waccess(wpath
, F_OK
) == 0)
1171 return xstrdup(path
);
1172 wpath
[wcslen(wpath
)-4] = '\0';
1173 if ((!exe_only
|| isexe
) && _waccess(wpath
, F_OK
) == 0) {
1174 if (!(GetFileAttributesW(wpath
) & FILE_ATTRIBUTE_DIRECTORY
)) {
1175 path
[strlen(path
)-4] = '\0';
1176 return xstrdup(path
);
1183 * Determines the absolute path of cmd using the split path in path.
1184 * If cmd contains a slash or backslash, no lookup is performed.
1186 static char *path_lookup(const char *cmd
, int exe_only
)
1190 int len
= strlen(cmd
);
1191 int isexe
= len
>= 4 && !strcasecmp(cmd
+len
-4, ".exe");
1193 if (strchr(cmd
, '/') || strchr(cmd
, '\\'))
1194 return xstrdup(cmd
);
1196 path
= mingw_getenv("PATH");
1201 const char *sep
= strchrnul(path
, ';');
1202 int dirlen
= sep
- path
;
1204 prog
= lookup_prog(path
, dirlen
, cmd
, isexe
, exe_only
);
1213 static const wchar_t *wcschrnul(const wchar_t *s
, wchar_t c
)
1215 while (*s
&& *s
!= c
)
1220 /* Compare only keys */
1221 static int wenvcmp(const void *a
, const void *b
)
1223 wchar_t *p
= *(wchar_t **)a
, *q
= *(wchar_t **)b
;
1224 size_t p_len
, q_len
;
1227 p_len
= wcschrnul(p
, L
'=') - p
;
1228 q_len
= wcschrnul(q
, L
'=') - q
;
1230 /* If the length differs, include the shorter key's NUL */
1233 else if (p_len
> q_len
)
1236 return _wcsnicmp(p
, q
, p_len
);
1239 /* We need a stable sort to convert the environment between UTF-16 <-> UTF-8 */
1240 #ifndef INTERNAL_QSORT
1245 * Build an environment block combining the inherited environment
1246 * merged with the given list of settings.
1248 * Values of the form "KEY=VALUE" in deltaenv override inherited values.
1249 * Values of the form "KEY" in deltaenv delete inherited values.
1251 * Multiple entries in deltaenv for the same key are explicitly allowed.
1253 * We return a contiguous block of UNICODE strings with a final trailing
1256 static wchar_t *make_environment_block(char **deltaenv
)
1258 wchar_t *wenv
= GetEnvironmentStringsW(), *wdeltaenv
, *result
, *p
;
1259 size_t wlen
, s
, delta_size
, size
;
1261 wchar_t **array
= NULL
;
1262 size_t alloc
= 0, nr
= 0, i
;
1264 size
= 1; /* for extra NUL at the end */
1266 /* If there is no deltaenv to apply, simply return a copy. */
1267 if (!deltaenv
|| !*deltaenv
) {
1268 for (p
= wenv
; p
&& *p
; ) {
1269 size_t s
= wcslen(p
) + 1;
1274 ALLOC_ARRAY(result
, size
);
1275 COPY_ARRAY(result
, wenv
, size
);
1276 FreeEnvironmentStringsW(wenv
);
1281 * If there is a deltaenv, let's accumulate all keys into `array`,
1282 * sort them using the stable git_qsort() and then copy, skipping
1285 for (p
= wenv
; p
&& *p
; ) {
1286 ALLOC_GROW(array
, nr
+ 1, alloc
);
1293 /* (over-)assess size needed for wchar version of deltaenv */
1294 for (delta_size
= 0, i
= 0; deltaenv
[i
]; i
++)
1295 delta_size
+= strlen(deltaenv
[i
]) * 2 + 1;
1296 ALLOC_ARRAY(wdeltaenv
, delta_size
);
1298 /* convert the deltaenv, appending to array */
1299 for (i
= 0, p
= wdeltaenv
; deltaenv
[i
]; i
++) {
1300 ALLOC_GROW(array
, nr
+ 1, alloc
);
1301 wlen
= xutftowcs(p
, deltaenv
[i
], wdeltaenv
+ delta_size
- p
);
1306 git_qsort(array
, nr
, sizeof(*array
), wenvcmp
);
1307 ALLOC_ARRAY(result
, size
+ delta_size
);
1309 for (p
= result
, i
= 0; i
< nr
; i
++) {
1310 /* Skip any duplicate keys; last one wins */
1311 while (i
+ 1 < nr
&& !wenvcmp(array
+ i
, array
+ i
+ 1))
1314 /* Skip "to delete" entry */
1315 if (!wcschr(array
[i
], L
'='))
1318 size
= wcslen(array
[i
]) + 1;
1319 COPY_ARRAY(p
, array
[i
], size
);
1326 FreeEnvironmentStringsW(wenv
);
1330 static void do_unset_environment_variables(void)
1333 char *p
= unset_environment_variables
;
1340 char *comma
= strchr(p
, ',');
1352 struct pinfo_t
*next
;
1356 static struct pinfo_t
*pinfo
= NULL
;
1357 CRITICAL_SECTION pinfo_cs
;
1359 /* Used to match and chomp off path components */
1360 static inline int match_last_path_component(const char *path
, size_t *len
,
1361 const char *component
)
1363 size_t component_len
= strlen(component
);
1364 if (*len
< component_len
+ 1 ||
1365 !is_dir_sep(path
[*len
- component_len
- 1]) ||
1366 fspathncmp(path
+ *len
- component_len
, component
, component_len
))
1368 *len
-= component_len
+ 1;
1369 /* chomp off repeated dir separators */
1370 while (*len
> 0 && is_dir_sep(path
[*len
- 1]))
1375 static int is_msys2_sh(const char *cmd
)
1377 if (cmd
&& !strcmp(cmd
, "sh")) {
1378 static int ret
= -1;
1384 p
= path_lookup(cmd
, 0);
1388 size_t len
= strlen(p
);
1390 ret
= match_last_path_component(p
, &len
, "sh.exe") &&
1391 match_last_path_component(p
, &len
, "bin") &&
1392 match_last_path_component(p
, &len
, "usr");
1400 static pid_t
mingw_spawnve_fd(const char *cmd
, const char **argv
, char **deltaenv
,
1402 int prepend_cmd
, int fhin
, int fhout
, int fherr
)
1405 PROCESS_INFORMATION pi
;
1407 wchar_t wcmd
[MAX_PATH
], wdir
[MAX_PATH
], *wargs
, *wenvblk
= NULL
;
1408 unsigned flags
= CREATE_UNICODE_ENVIRONMENT
;
1411 const char *(*quote_arg
)(const char *arg
) =
1412 is_msys2_sh(*argv
) ? quote_arg_msys2
: quote_arg_msvc
;
1414 do_unset_environment_variables();
1416 /* Determine whether or not we are associated to a console */
1417 cons
= CreateFileW(L
"CONOUT$", GENERIC_WRITE
,
1418 FILE_SHARE_WRITE
, NULL
, OPEN_EXISTING
,
1419 FILE_ATTRIBUTE_NORMAL
, NULL
);
1420 if (cons
== INVALID_HANDLE_VALUE
) {
1421 /* There is no console associated with this process.
1422 * Since the child is a console process, Windows
1423 * would normally create a console window. But
1424 * since we'll be redirecting std streams, we do
1425 * not need the console.
1426 * It is necessary to use DETACHED_PROCESS
1427 * instead of CREATE_NO_WINDOW to make ssh
1428 * recognize that it has no console.
1430 flags
|= DETACHED_PROCESS
;
1432 /* There is already a console. If we specified
1433 * DETACHED_PROCESS here, too, Windows would
1434 * disassociate the child from the console.
1435 * The same is true for CREATE_NO_WINDOW.
1440 memset(&si
, 0, sizeof(si
));
1442 si
.dwFlags
= STARTF_USESTDHANDLES
;
1443 si
.hStdInput
= winansi_get_osfhandle(fhin
);
1444 si
.hStdOutput
= winansi_get_osfhandle(fhout
);
1445 si
.hStdError
= winansi_get_osfhandle(fherr
);
1447 if (*argv
&& !strcmp(cmd
, *argv
))
1449 else if (xutftowcs_path(wcmd
, cmd
) < 0)
1451 if (dir
&& xutftowcs_path(wdir
, dir
) < 0)
1454 /* concatenate argv, quoting args as we go */
1455 strbuf_init(&args
, 0);
1457 char *quoted
= (char *)quote_arg(cmd
);
1458 strbuf_addstr(&args
, quoted
);
1462 for (; *argv
; argv
++) {
1463 char *quoted
= (char *)quote_arg(*argv
);
1465 strbuf_addch(&args
, ' ');
1466 strbuf_addstr(&args
, quoted
);
1467 if (quoted
!= *argv
)
1471 ALLOC_ARRAY(wargs
, st_add(st_mult(2, args
.len
), 1));
1472 xutftowcs(wargs
, args
.buf
, 2 * args
.len
+ 1);
1473 strbuf_release(&args
);
1475 wenvblk
= make_environment_block(deltaenv
);
1477 memset(&pi
, 0, sizeof(pi
));
1478 ret
= CreateProcessW(*wcmd
? wcmd
: NULL
, wargs
, NULL
, NULL
, TRUE
,
1479 flags
, wenvblk
, dir
? wdir
: NULL
, &si
, &pi
);
1488 CloseHandle(pi
.hThread
);
1491 * The process ID is the human-readable identifier of the process
1492 * that we want to present in log and error messages. The handle
1493 * is not useful for this purpose. But we cannot close it, either,
1494 * because it is not possible to turn a process ID into a process
1495 * handle after the process terminated.
1496 * Keep the handle in a list for waitpid.
1498 EnterCriticalSection(&pinfo_cs
);
1500 struct pinfo_t
*info
= xmalloc(sizeof(struct pinfo_t
));
1501 info
->pid
= pi
.dwProcessId
;
1502 info
->proc
= pi
.hProcess
;
1506 LeaveCriticalSection(&pinfo_cs
);
1508 return (pid_t
)pi
.dwProcessId
;
1511 static pid_t
mingw_spawnv(const char *cmd
, const char **argv
, int prepend_cmd
)
1513 return mingw_spawnve_fd(cmd
, argv
, NULL
, NULL
, prepend_cmd
, 0, 1, 2);
1516 pid_t
mingw_spawnvpe(const char *cmd
, const char **argv
, char **deltaenv
,
1518 int fhin
, int fhout
, int fherr
)
1521 char *prog
= path_lookup(cmd
, 0);
1528 const char *interpr
= parse_interpreter(prog
);
1531 const char *argv0
= argv
[0];
1532 char *iprog
= path_lookup(interpr
, 1);
1539 pid
= mingw_spawnve_fd(iprog
, argv
, deltaenv
, dir
, 1,
1540 fhin
, fhout
, fherr
);
1546 pid
= mingw_spawnve_fd(prog
, argv
, deltaenv
, dir
, 0,
1547 fhin
, fhout
, fherr
);
1553 static int try_shell_exec(const char *cmd
, char *const *argv
)
1555 const char *interpr
= parse_interpreter(cmd
);
1561 prog
= path_lookup(interpr
, 1);
1569 while (argv
[argc
]) argc
++;
1570 ALLOC_ARRAY(argv2
, argc
+ 1);
1571 argv2
[0] = (char *)cmd
; /* full path to the script file */
1572 memcpy(&argv2
[1], &argv
[1], sizeof(*argv
) * argc
);
1573 exec_id
= trace2_exec(prog
, argv2
);
1574 pid
= mingw_spawnv(prog
, argv2
, 1);
1577 if (waitpid(pid
, &status
, 0) < 0)
1579 trace2_exec_result(exec_id
, status
);
1582 trace2_exec_result(exec_id
, -1);
1583 pid
= 1; /* indicate that we tried but failed */
1590 int mingw_execv(const char *cmd
, char *const *argv
)
1592 /* check if git_command is a shell script */
1593 if (!try_shell_exec(cmd
, argv
)) {
1597 exec_id
= trace2_exec(cmd
, (const char **)argv
);
1598 pid
= mingw_spawnv(cmd
, (const char **)argv
, 0);
1600 trace2_exec_result(exec_id
, -1);
1603 if (waitpid(pid
, &status
, 0) < 0)
1605 trace2_exec_result(exec_id
, status
);
1611 int mingw_execvp(const char *cmd
, char *const *argv
)
1613 char *prog
= path_lookup(cmd
, 0);
1616 mingw_execv(prog
, argv
);
1624 int mingw_kill(pid_t pid
, int sig
)
1626 if (pid
> 0 && sig
== SIGTERM
) {
1627 HANDLE h
= OpenProcess(PROCESS_TERMINATE
, FALSE
, pid
);
1629 if (TerminateProcess(h
, -1)) {
1634 errno
= err_win_to_posix(GetLastError());
1637 } else if (pid
> 0 && sig
== 0) {
1638 HANDLE h
= OpenProcess(PROCESS_QUERY_INFORMATION
, FALSE
, pid
);
1650 * UTF-8 versions of getenv(), putenv() and unsetenv().
1651 * Internally, they use the CRT's stock UNICODE routines
1652 * to avoid data loss.
1654 char *mingw_getenv(const char *name
)
1656 #define GETENV_MAX_RETAIN 64
1657 static char *values
[GETENV_MAX_RETAIN
];
1658 static int value_counter
;
1659 int len_key
, len_value
;
1662 wchar_t w_value
[32768];
1664 if (!name
|| !*name
)
1667 len_key
= strlen(name
) + 1;
1668 /* We cannot use xcalloc() here because that uses getenv() itself */
1669 w_key
= calloc(len_key
, sizeof(wchar_t));
1671 die("Out of memory, (tried to allocate %u wchar_t's)", len_key
);
1672 xutftowcs(w_key
, name
, len_key
);
1673 len_value
= GetEnvironmentVariableW(w_key
, w_value
, ARRAY_SIZE(w_value
));
1674 if (!len_value
&& GetLastError() == ERROR_ENVVAR_NOT_FOUND
) {
1680 len_value
= len_value
* 3 + 1;
1681 /* We cannot use xcalloc() here because that uses getenv() itself */
1682 value
= calloc(len_value
, sizeof(char));
1684 die("Out of memory, (tried to allocate %u bytes)", len_value
);
1685 xwcstoutf(value
, w_value
, len_value
);
1688 * We return `value` which is an allocated value and the caller is NOT
1689 * expecting to have to free it, so we keep a round-robin array,
1690 * invalidating the buffer after GETENV_MAX_RETAIN getenv() calls.
1692 free(values
[value_counter
]);
1693 values
[value_counter
++] = value
;
1694 if (value_counter
>= ARRAY_SIZE(values
))
1700 int mingw_putenv(const char *namevalue
)
1703 wchar_t *wide
, *equal
;
1706 if (!namevalue
|| !*namevalue
)
1709 size
= strlen(namevalue
) * 2 + 1;
1710 wide
= calloc(size
, sizeof(wchar_t));
1712 die("Out of memory, (tried to allocate %u wchar_t's)", size
);
1713 xutftowcs(wide
, namevalue
, size
);
1714 equal
= wcschr(wide
, L
'=');
1716 result
= SetEnvironmentVariableW(wide
, NULL
);
1719 result
= SetEnvironmentVariableW(wide
, equal
+ 1);
1724 errno
= err_win_to_posix(GetLastError());
1726 return result
? 0 : -1;
1729 static void ensure_socket_initialization(void)
1732 static int initialized
= 0;
1737 if (WSAStartup(MAKEWORD(2,2), &wsa
))
1738 die("unable to initialize winsock subsystem, error %d",
1741 atexit((void(*)(void)) WSACleanup
);
1746 int mingw_gethostname(char *name
, int namelen
)
1748 ensure_socket_initialization();
1749 return gethostname(name
, namelen
);
1752 #undef gethostbyname
1753 struct hostent
*mingw_gethostbyname(const char *host
)
1755 ensure_socket_initialization();
1756 return gethostbyname(host
);
1760 int mingw_getaddrinfo(const char *node
, const char *service
,
1761 const struct addrinfo
*hints
, struct addrinfo
**res
)
1763 ensure_socket_initialization();
1764 return getaddrinfo(node
, service
, hints
, res
);
1767 int mingw_socket(int domain
, int type
, int protocol
)
1772 ensure_socket_initialization();
1773 s
= WSASocket(domain
, type
, protocol
, NULL
, 0, 0);
1774 if (s
== INVALID_SOCKET
) {
1776 * WSAGetLastError() values are regular BSD error codes
1777 * biased by WSABASEERR.
1778 * However, strerror() does not know about networking
1779 * specific errors, which are values beginning at 38 or so.
1780 * Therefore, we choose to leave the biased error code
1781 * in errno so that _if_ someone looks up the code somewhere,
1782 * then it is at least the number that are usually listed.
1784 errno
= WSAGetLastError();
1787 /* convert into a file descriptor */
1788 if ((sockfd
= _open_osfhandle(s
, O_RDWR
|O_BINARY
)) < 0) {
1790 return error("unable to make a socket file descriptor: %s",
1797 int mingw_connect(int sockfd
, struct sockaddr
*sa
, size_t sz
)
1799 SOCKET s
= (SOCKET
)_get_osfhandle(sockfd
);
1800 return connect(s
, sa
, sz
);
1804 int mingw_bind(int sockfd
, struct sockaddr
*sa
, size_t sz
)
1806 SOCKET s
= (SOCKET
)_get_osfhandle(sockfd
);
1807 return bind(s
, sa
, sz
);
1811 int mingw_setsockopt(int sockfd
, int lvl
, int optname
, void *optval
, int optlen
)
1813 SOCKET s
= (SOCKET
)_get_osfhandle(sockfd
);
1814 return setsockopt(s
, lvl
, optname
, (const char*)optval
, optlen
);
1818 int mingw_shutdown(int sockfd
, int how
)
1820 SOCKET s
= (SOCKET
)_get_osfhandle(sockfd
);
1821 return shutdown(s
, how
);
1825 int mingw_listen(int sockfd
, int backlog
)
1827 SOCKET s
= (SOCKET
)_get_osfhandle(sockfd
);
1828 return listen(s
, backlog
);
1832 int mingw_accept(int sockfd1
, struct sockaddr
*sa
, socklen_t
*sz
)
1836 SOCKET s1
= (SOCKET
)_get_osfhandle(sockfd1
);
1837 SOCKET s2
= accept(s1
, sa
, sz
);
1839 /* convert into a file descriptor */
1840 if ((sockfd2
= _open_osfhandle(s2
, O_RDWR
|O_BINARY
)) < 0) {
1843 return error("unable to make a socket file descriptor: %s",
1850 int mingw_rename(const char *pold
, const char *pnew
)
1854 wchar_t wpold
[MAX_PATH
], wpnew
[MAX_PATH
];
1855 if (xutftowcs_path(wpold
, pold
) < 0 || xutftowcs_path(wpnew
, pnew
) < 0)
1859 * Try native rename() first to get errno right.
1860 * It is based on MoveFile(), which cannot overwrite existing files.
1862 if (!_wrename(wpold
, wpnew
))
1864 if (errno
!= EEXIST
)
1867 if (MoveFileExW(wpold
, wpnew
, MOVEFILE_REPLACE_EXISTING
))
1869 /* TODO: translate more errors */
1870 gle
= GetLastError();
1871 if (gle
== ERROR_ACCESS_DENIED
&&
1872 (attrs
= GetFileAttributesW(wpnew
)) != INVALID_FILE_ATTRIBUTES
) {
1873 if (attrs
& FILE_ATTRIBUTE_DIRECTORY
) {
1874 DWORD attrsold
= GetFileAttributesW(wpold
);
1875 if (attrsold
== INVALID_FILE_ATTRIBUTES
||
1876 !(attrsold
& FILE_ATTRIBUTE_DIRECTORY
))
1878 else if (!_wrmdir(wpnew
))
1882 if ((attrs
& FILE_ATTRIBUTE_READONLY
) &&
1883 SetFileAttributesW(wpnew
, attrs
& ~FILE_ATTRIBUTE_READONLY
)) {
1884 if (MoveFileExW(wpold
, wpnew
, MOVEFILE_REPLACE_EXISTING
))
1886 gle
= GetLastError();
1887 /* revert file attributes on failure */
1888 SetFileAttributesW(wpnew
, attrs
);
1891 if (tries
< ARRAY_SIZE(delay
) && gle
== ERROR_ACCESS_DENIED
) {
1893 * We assume that some other process had the source or
1894 * destination file open at the wrong moment and retry.
1895 * In order to give the other process a higher chance to
1896 * complete its operation, we give up our time slice now.
1897 * If we have to retry again, we do sleep a bit.
1899 Sleep(delay
[tries
]);
1903 if (gle
== ERROR_ACCESS_DENIED
&&
1904 ask_yes_no_if_possible("Rename from '%s' to '%s' failed. "
1905 "Should I try again?", pold
, pnew
))
1913 * Note that this doesn't return the actual pagesize, but
1914 * the allocation granularity. If future Windows specific git code
1915 * needs the real getpagesize function, we need to find another solution.
1917 int mingw_getpagesize(void)
1921 return si
.dwAllocationGranularity
;
1924 /* See https://msdn.microsoft.com/en-us/library/windows/desktop/ms724435.aspx */
1925 enum EXTENDED_NAME_FORMAT
{
1927 NameUserPrincipal
= 8
1930 static char *get_extended_user_info(enum EXTENDED_NAME_FORMAT type
)
1932 DECLARE_PROC_ADDR(secur32
.dll
, BOOL
, GetUserNameExW
,
1933 enum EXTENDED_NAME_FORMAT
, LPCWSTR
, PULONG
);
1934 static wchar_t wbuffer
[1024];
1937 if (!INIT_PROC_ADDR(GetUserNameExW
))
1940 len
= ARRAY_SIZE(wbuffer
);
1941 if (GetUserNameExW(type
, wbuffer
, &len
)) {
1942 char *converted
= xmalloc((len
*= 3));
1943 if (xwcstoutf(converted
, wbuffer
, len
) >= 0)
1951 char *mingw_query_user_email(void)
1953 return get_extended_user_info(NameUserPrincipal
);
1956 struct passwd
*getpwuid(int uid
)
1958 static unsigned initialized
;
1959 static char user_name
[100];
1960 static struct passwd
*p
;
1967 len
= ARRAY_SIZE(buf
);
1968 if (!GetUserNameW(buf
, &len
)) {
1973 if (xwcstoutf(user_name
, buf
, sizeof(user_name
)) < 0) {
1978 p
= xmalloc(sizeof(*p
));
1979 p
->pw_name
= user_name
;
1980 p
->pw_gecos
= get_extended_user_info(NameDisplay
);
1982 p
->pw_gecos
= "unknown";
1989 static HANDLE timer_event
;
1990 static HANDLE timer_thread
;
1991 static int timer_interval
;
1992 static int one_shot
;
1993 static sig_handler_t timer_fn
= SIG_DFL
, sigint_fn
= SIG_DFL
;
1995 /* The timer works like this:
1996 * The thread, ticktack(), is a trivial routine that most of the time
1997 * only waits to receive the signal to terminate. The main thread tells
1998 * the thread to terminate by setting the timer_event to the signalled
2000 * But ticktack() interrupts the wait state after the timer's interval
2001 * length to call the signal handler.
2004 static unsigned __stdcall
ticktack(void *dummy
)
2006 while (WaitForSingleObject(timer_event
, timer_interval
) == WAIT_TIMEOUT
) {
2007 mingw_raise(SIGALRM
);
2014 static int start_timer_thread(void)
2016 timer_event
= CreateEvent(NULL
, FALSE
, FALSE
, NULL
);
2018 timer_thread
= (HANDLE
) _beginthreadex(NULL
, 0, ticktack
, NULL
, 0, NULL
);
2020 return errno
= ENOMEM
,
2021 error("cannot start timer thread");
2023 return errno
= ENOMEM
,
2024 error("cannot allocate resources for timer");
2028 static void stop_timer_thread(void)
2031 SetEvent(timer_event
); /* tell thread to terminate */
2033 int rc
= WaitForSingleObject(timer_thread
, 10000);
2034 if (rc
== WAIT_TIMEOUT
)
2035 error("timer thread did not terminate timely");
2036 else if (rc
!= WAIT_OBJECT_0
)
2037 error("waiting for timer thread failed: %lu",
2039 CloseHandle(timer_thread
);
2042 CloseHandle(timer_event
);
2044 timer_thread
= NULL
;
2047 static inline int is_timeval_eq(const struct timeval
*i1
, const struct timeval
*i2
)
2049 return i1
->tv_sec
== i2
->tv_sec
&& i1
->tv_usec
== i2
->tv_usec
;
2052 int setitimer(int type
, struct itimerval
*in
, struct itimerval
*out
)
2054 static const struct timeval zero
;
2055 static int atexit_done
;
2058 return errno
= EINVAL
,
2059 error("setitimer param 3 != NULL not implemented");
2060 if (!is_timeval_eq(&in
->it_interval
, &zero
) &&
2061 !is_timeval_eq(&in
->it_interval
, &in
->it_value
))
2062 return errno
= EINVAL
,
2063 error("setitimer: it_interval must be zero or eq it_value");
2066 stop_timer_thread();
2068 if (is_timeval_eq(&in
->it_value
, &zero
) &&
2069 is_timeval_eq(&in
->it_interval
, &zero
))
2072 timer_interval
= in
->it_value
.tv_sec
* 1000 + in
->it_value
.tv_usec
/ 1000;
2073 one_shot
= is_timeval_eq(&in
->it_interval
, &zero
);
2075 atexit(stop_timer_thread
);
2078 return start_timer_thread();
2081 int sigaction(int sig
, struct sigaction
*in
, struct sigaction
*out
)
2084 return errno
= EINVAL
,
2085 error("sigaction only implemented for SIGALRM");
2087 return errno
= EINVAL
,
2088 error("sigaction: param 3 != NULL not implemented");
2090 timer_fn
= in
->sa_handler
;
2095 sig_handler_t
mingw_signal(int sig
, sig_handler_t handler
)
2107 sigint_fn
= handler
;
2111 return signal(sig
, handler
);
2118 int mingw_raise(int sig
)
2122 if (timer_fn
== SIG_DFL
) {
2123 if (isatty(STDERR_FILENO
))
2124 fputs("Alarm clock\n", stderr
);
2125 exit(128 + SIGALRM
);
2126 } else if (timer_fn
!= SIG_IGN
)
2131 if (sigint_fn
== SIG_DFL
)
2133 else if (sigint_fn
!= SIG_IGN
)
2137 #if defined(_MSC_VER)
2144 case SIGABRT_COMPAT
:
2146 * The <signal.h> header in the MS C Runtime defines 8 signals
2147 * as being supported on the platform. Anything else causes an
2148 * "Invalid signal or error" (which in DEBUG builds causes the
2149 * Abort/Retry/Ignore dialog). We by-pass the CRT for things we
2150 * already know will fail.
2167 int link(const char *oldpath
, const char *newpath
)
2169 wchar_t woldpath
[MAX_PATH
], wnewpath
[MAX_PATH
];
2170 if (xutftowcs_path(woldpath
, oldpath
) < 0 ||
2171 xutftowcs_path(wnewpath
, newpath
) < 0)
2174 if (!CreateHardLinkW(wnewpath
, woldpath
, NULL
)) {
2175 errno
= err_win_to_posix(GetLastError());
2181 pid_t
waitpid(pid_t pid
, int *status
, int options
)
2183 HANDLE h
= OpenProcess(SYNCHRONIZE
| PROCESS_QUERY_INFORMATION
,
2190 if (pid
> 0 && options
& WNOHANG
) {
2191 if (WAIT_OBJECT_0
!= WaitForSingleObject(h
, 0)) {
2195 options
&= ~WNOHANG
;
2199 struct pinfo_t
**ppinfo
;
2200 if (WaitForSingleObject(h
, INFINITE
) != WAIT_OBJECT_0
) {
2206 GetExitCodeProcess(h
, (LPDWORD
)status
);
2208 EnterCriticalSection(&pinfo_cs
);
2212 struct pinfo_t
*info
= *ppinfo
;
2213 if (info
->pid
== pid
) {
2214 CloseHandle(info
->proc
);
2215 *ppinfo
= info
->next
;
2219 ppinfo
= &info
->next
;
2222 LeaveCriticalSection(&pinfo_cs
);
2233 int xutftowcsn(wchar_t *wcs
, const char *utfs
, size_t wcslen
, int utflen
)
2235 int upos
= 0, wpos
= 0;
2236 const unsigned char *utf
= (const unsigned char*) utfs
;
2237 if (!utf
|| !wcs
|| wcslen
< 1) {
2241 /* reserve space for \0 */
2246 while (upos
< utflen
) {
2247 int c
= utf
[upos
++] & 0xff;
2248 if (utflen
== INT_MAX
&& c
== 0)
2251 if (wpos
>= wcslen
) {
2260 } else if (c
>= 0xc2 && c
< 0xe0 && upos
< utflen
&&
2261 (utf
[upos
] & 0xc0) == 0x80) {
2263 c
= ((c
& 0x1f) << 6);
2264 c
|= (utf
[upos
++] & 0x3f);
2266 } else if (c
>= 0xe0 && c
< 0xf0 && upos
+ 1 < utflen
&&
2267 !(c
== 0xe0 && utf
[upos
] < 0xa0) && /* over-long encoding */
2268 (utf
[upos
] & 0xc0) == 0x80 &&
2269 (utf
[upos
+ 1] & 0xc0) == 0x80) {
2271 c
= ((c
& 0x0f) << 12);
2272 c
|= ((utf
[upos
++] & 0x3f) << 6);
2273 c
|= (utf
[upos
++] & 0x3f);
2275 } else if (c
>= 0xf0 && c
< 0xf5 && upos
+ 2 < utflen
&&
2276 wpos
+ 1 < wcslen
&&
2277 !(c
== 0xf0 && utf
[upos
] < 0x90) && /* over-long encoding */
2278 !(c
== 0xf4 && utf
[upos
] >= 0x90) && /* > \u10ffff */
2279 (utf
[upos
] & 0xc0) == 0x80 &&
2280 (utf
[upos
+ 1] & 0xc0) == 0x80 &&
2281 (utf
[upos
+ 2] & 0xc0) == 0x80) {
2282 /* 4-byte utf-8: convert to \ud8xx \udcxx surrogate pair */
2283 c
= ((c
& 0x07) << 18);
2284 c
|= ((utf
[upos
++] & 0x3f) << 12);
2285 c
|= ((utf
[upos
++] & 0x3f) << 6);
2286 c
|= (utf
[upos
++] & 0x3f);
2288 wcs
[wpos
++] = 0xd800 | (c
>> 10);
2289 wcs
[wpos
++] = 0xdc00 | (c
& 0x3ff);
2290 } else if (c
>= 0xa0) {
2291 /* invalid utf-8 byte, printable unicode char: convert 1:1 */
2294 /* invalid utf-8 byte, non-printable unicode: convert to hex */
2295 static const char *hex
= "0123456789abcdef";
2296 wcs
[wpos
++] = hex
[c
>> 4];
2298 wcs
[wpos
++] = hex
[c
& 0x0f];
2305 int xwcstoutf(char *utf
, const wchar_t *wcs
, size_t utflen
)
2307 if (!wcs
|| !utf
|| utflen
< 1) {
2311 utflen
= WideCharToMultiByte(CP_UTF8
, 0, wcs
, -1, utf
, utflen
, NULL
, NULL
);
2318 static void setup_windows_environment(void)
2320 char *tmp
= getenv("TMPDIR");
2322 /* on Windows it is TMP and TEMP */
2324 if (!(tmp
= getenv("TMP")))
2325 tmp
= getenv("TEMP");
2327 setenv("TMPDIR", tmp
, 1);
2328 tmp
= getenv("TMPDIR");
2334 * Convert all dir separators to forward slashes,
2335 * to help shell commands called from the Git
2336 * executable (by not mistaking the dir separators
2337 * for escape characters).
2339 convert_slashes(tmp
);
2342 /* simulate TERM to enable auto-color (see color.c) */
2343 if (!getenv("TERM"))
2344 setenv("TERM", "cygwin", 1);
2346 /* calculate HOME if not set */
2347 if (!getenv("HOME")) {
2349 * try $HOMEDRIVE$HOMEPATH - the home share may be a network
2350 * location, thus also check if the path exists (i.e. is not
2353 if ((tmp
= getenv("HOMEDRIVE"))) {
2354 struct strbuf buf
= STRBUF_INIT
;
2355 strbuf_addstr(&buf
, tmp
);
2356 if ((tmp
= getenv("HOMEPATH"))) {
2357 strbuf_addstr(&buf
, tmp
);
2358 if (is_directory(buf
.buf
))
2359 setenv("HOME", buf
.buf
, 1);
2361 tmp
= NULL
; /* use $USERPROFILE */
2363 strbuf_release(&buf
);
2365 /* use $USERPROFILE if the home share is not available */
2366 if (!tmp
&& (tmp
= getenv("USERPROFILE")))
2367 setenv("HOME", tmp
, 1);
2371 #if !defined(_MSC_VER)
2373 * Disable MSVCRT command line wildcard expansion (__getmainargs called from
2374 * mingw startup code, see init.c in mingw runtime).
2379 static NORETURN
void die_startup(void)
2381 fputs("fatal: not enough memory for initialization", stderr
);
2385 static void *malloc_startup(size_t size
)
2387 void *result
= malloc(size
);
2393 static char *wcstoutfdup_startup(char *buffer
, const wchar_t *wcs
, size_t len
)
2395 len
= xwcstoutf(buffer
, wcs
, len
) + 1;
2396 return memcpy(malloc_startup(len
), buffer
, len
);
2399 static void maybe_redirect_std_handle(const wchar_t *key
, DWORD std_id
, int fd
,
2400 DWORD desired_access
, DWORD flags
)
2402 DWORD create_flag
= fd
? OPEN_ALWAYS
: OPEN_EXISTING
;
2403 wchar_t buf
[MAX_PATH
];
2404 DWORD max
= ARRAY_SIZE(buf
);
2406 DWORD ret
= GetEnvironmentVariableW(key
, buf
, max
);
2408 if (!ret
|| ret
>= max
)
2411 /* make sure this does not leak into child processes */
2412 SetEnvironmentVariableW(key
, NULL
);
2413 if (!wcscmp(buf
, L
"off")) {
2415 handle
= GetStdHandle(std_id
);
2416 if (handle
!= INVALID_HANDLE_VALUE
)
2417 CloseHandle(handle
);
2420 if (std_id
== STD_ERROR_HANDLE
&& !wcscmp(buf
, L
"2>&1")) {
2421 handle
= GetStdHandle(STD_OUTPUT_HANDLE
);
2422 if (handle
== INVALID_HANDLE_VALUE
) {
2424 handle
= GetStdHandle(std_id
);
2425 if (handle
!= INVALID_HANDLE_VALUE
)
2426 CloseHandle(handle
);
2428 int new_fd
= _open_osfhandle((intptr_t)handle
, O_BINARY
);
2429 SetStdHandle(std_id
, handle
);
2431 /* do *not* close the new_fd: that would close stdout */
2435 handle
= CreateFileW(buf
, desired_access
, 0, NULL
, create_flag
,
2437 if (handle
!= INVALID_HANDLE_VALUE
) {
2438 int new_fd
= _open_osfhandle((intptr_t)handle
, O_BINARY
);
2439 SetStdHandle(std_id
, handle
);
2445 static void maybe_redirect_std_handles(void)
2447 maybe_redirect_std_handle(L
"GIT_REDIRECT_STDIN", STD_INPUT_HANDLE
, 0,
2448 GENERIC_READ
, FILE_ATTRIBUTE_NORMAL
);
2449 maybe_redirect_std_handle(L
"GIT_REDIRECT_STDOUT", STD_OUTPUT_HANDLE
, 1,
2450 GENERIC_WRITE
, FILE_ATTRIBUTE_NORMAL
);
2451 maybe_redirect_std_handle(L
"GIT_REDIRECT_STDERR", STD_ERROR_HANDLE
, 2,
2452 GENERIC_WRITE
, FILE_FLAG_NO_BUFFERING
);
2462 * We implement wmain() and compile with -municode, which would
2463 * normally ignore main(), but we call the latter from the former
2464 * so that we can handle non-ASCII command-line parameters
2467 * To be more compatible with the core git code, we convert
2468 * argv into UTF8 and pass them directly to main().
2470 int wmain(int argc
, const wchar_t **wargv
)
2472 int i
, maxlen
, exit_status
;
2473 char *buffer
, **save
;
2476 trace2_initialize_clock();
2480 _CrtSetReportMode(_CRT_ASSERT
, _CRTDBG_MODE_DEBUG
);
2483 #ifdef USE_MSVC_CRTDBG
2484 _CrtSetDbgFlag(_CRTDBG_ALLOC_MEM_DF
| _CRTDBG_LEAK_CHECK_DF
);
2488 maybe_redirect_std_handles();
2490 /* determine size of argv and environ conversion buffer */
2491 maxlen
= wcslen(wargv
[0]);
2492 for (i
= 1; i
< argc
; i
++)
2493 maxlen
= max(maxlen
, wcslen(wargv
[i
]));
2495 /* allocate buffer (wchar_t encodes to max 3 UTF-8 bytes) */
2496 maxlen
= 3 * maxlen
+ 1;
2497 buffer
= malloc_startup(maxlen
);
2500 * Create a UTF-8 version of w_argv. Also create a "save" copy
2501 * to remember all the string pointers because parse_options()
2502 * will remove claimed items from the argv that we pass down.
2504 ALLOC_ARRAY(argv
, argc
+ 1);
2505 ALLOC_ARRAY(save
, argc
+ 1);
2506 for (i
= 0; i
< argc
; i
++)
2507 argv
[i
] = save
[i
] = wcstoutfdup_startup(buffer
, wargv
[i
], maxlen
);
2508 argv
[i
] = save
[i
] = NULL
;
2511 /* fix Windows specific environment settings */
2512 setup_windows_environment();
2514 unset_environment_variables
= xstrdup("PERL5LIB");
2516 /* initialize critical section for waitpid pinfo_t list */
2517 InitializeCriticalSection(&pinfo_cs
);
2519 /* set up default file mode and file modes for stdin/out/err */
2521 _setmode(_fileno(stdin
), _O_BINARY
);
2522 _setmode(_fileno(stdout
), _O_BINARY
);
2523 _setmode(_fileno(stderr
), _O_BINARY
);
2525 /* initialize Unicode console */
2528 /* invoke the real main() using our utf8 version of argv. */
2529 exit_status
= main(argc
, argv
);
2531 for (i
= 0; i
< argc
; i
++)
2539 int uname(struct utsname
*buf
)
2541 unsigned v
= (unsigned)GetVersion();
2542 memset(buf
, 0, sizeof(*buf
));
2543 xsnprintf(buf
->sysname
, sizeof(buf
->sysname
), "Windows");
2544 xsnprintf(buf
->release
, sizeof(buf
->release
),
2545 "%u.%u", v
& 0xff, (v
>> 8) & 0xff);
2546 /* assuming NT variants only.. */
2547 xsnprintf(buf
->version
, sizeof(buf
->version
),
2548 "%u", (v
>> 16) & 0x7fff);