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 */
370 if (hide_dotfiles
== HIDE_DOTFILES_TRUE
)
371 return *basename
== '.';
373 assert(hide_dotfiles
== HIDE_DOTFILES_DOTGITONLY
);
374 return !strncasecmp(".git", basename
, 4) &&
375 (!basename
[4] || is_dir_sep(basename
[4]));
378 static int set_hidden_flag(const wchar_t *path
, int set
)
380 DWORD original
= GetFileAttributesW(path
), modified
;
382 modified
= original
| FILE_ATTRIBUTE_HIDDEN
;
384 modified
= original
& ~FILE_ATTRIBUTE_HIDDEN
;
385 if (original
== modified
|| SetFileAttributesW(path
, modified
))
387 errno
= err_win_to_posix(GetLastError());
391 int mingw_mkdir(const char *path
, int mode
)
394 wchar_t wpath
[MAX_PATH
];
396 if (!is_valid_win32_path(path
)) {
401 if (xutftowcs_path(wpath
, path
) < 0)
403 ret
= _wmkdir(wpath
);
404 if (!ret
&& needs_hiding(path
))
405 return set_hidden_flag(wpath
, 1);
410 * Calling CreateFile() using FILE_APPEND_DATA and without FILE_WRITE_DATA
411 * is documented in [1] as opening a writable file handle in append mode.
412 * (It is believed that) this is atomic since it is maintained by the
413 * kernel unlike the O_APPEND flag which is racily maintained by the CRT.
415 * [1] https://docs.microsoft.com/en-us/windows/desktop/fileio/file-access-rights-constants
417 * This trick does not appear to work for named pipes. Instead it creates
418 * a named pipe client handle that cannot be written to. Callers should
419 * just use the regular _wopen() for them. (And since client handle gets
420 * bound to a unique server handle, it isn't really an issue.)
422 static int mingw_open_append(wchar_t const *wfilename
, int oflags
, ...)
426 DWORD create
= (oflags
& O_CREAT
) ? OPEN_ALWAYS
: OPEN_EXISTING
;
428 /* only these flags are supported */
429 if ((oflags
& ~O_CREAT
) != (O_WRONLY
| O_APPEND
))
430 return errno
= ENOSYS
, -1;
433 * FILE_SHARE_WRITE is required to permit child processes
434 * to append to the file.
436 handle
= CreateFileW(wfilename
, FILE_APPEND_DATA
,
437 FILE_SHARE_WRITE
| FILE_SHARE_READ
,
438 NULL
, create
, FILE_ATTRIBUTE_NORMAL
, NULL
);
439 if (handle
== INVALID_HANDLE_VALUE
)
440 return errno
= err_win_to_posix(GetLastError()), -1;
443 * No O_APPEND here, because the CRT uses it only to reset the
444 * file pointer to EOF before each write(); but that is not
445 * necessary (and may lead to races) for a file created with
448 fd
= _open_osfhandle((intptr_t)handle
, O_BINARY
);
455 * Does the pathname map to the local named pipe filesystem?
456 * That is, does it have a "//./pipe/" prefix?
458 static int is_local_named_pipe_path(const char *filename
)
460 return (is_dir_sep(filename
[0]) &&
461 is_dir_sep(filename
[1]) &&
462 filename
[2] == '.' &&
463 is_dir_sep(filename
[3]) &&
464 !strncasecmp(filename
+4, "pipe", 4) &&
465 is_dir_sep(filename
[8]) &&
469 int mingw_open (const char *filename
, int oflags
, ...)
471 typedef int (*open_fn_t
)(wchar_t const *wfilename
, int oflags
, ...);
474 int fd
, create
= (oflags
& (O_CREAT
| O_EXCL
)) == (O_CREAT
| O_EXCL
);
475 wchar_t wfilename
[MAX_PATH
];
478 va_start(args
, oflags
);
479 mode
= va_arg(args
, int);
482 if (!is_valid_win32_path(filename
)) {
483 errno
= create
? EINVAL
: ENOENT
;
487 if ((oflags
& O_APPEND
) && !is_local_named_pipe_path(filename
))
488 open_fn
= mingw_open_append
;
492 if (filename
&& !strcmp(filename
, "/dev/null"))
493 wcscpy(wfilename
, L
"nul");
494 else if (xutftowcs_path(wfilename
, filename
) < 0)
497 fd
= open_fn(wfilename
, oflags
, mode
);
499 if (fd
< 0 && (oflags
& O_ACCMODE
) != O_RDONLY
&& errno
== EACCES
) {
500 DWORD attrs
= GetFileAttributesW(wfilename
);
501 if (attrs
!= INVALID_FILE_ATTRIBUTES
&& (attrs
& FILE_ATTRIBUTE_DIRECTORY
))
504 if ((oflags
& O_CREAT
) && needs_hiding(filename
)) {
506 * Internally, _wopen() uses the CreateFile() API which errors
507 * out with an ERROR_ACCESS_DENIED if CREATE_ALWAYS was
508 * specified and an already existing file's attributes do not
509 * match *exactly*. As there is no mode or flag we can set that
510 * would correspond to FILE_ATTRIBUTE_HIDDEN, let's just try
511 * again *without* the O_CREAT flag (that corresponds to the
512 * CREATE_ALWAYS flag of CreateFile()).
514 if (fd
< 0 && errno
== EACCES
)
515 fd
= open_fn(wfilename
, oflags
& ~O_CREAT
, mode
);
516 if (fd
>= 0 && set_hidden_flag(wfilename
, 1))
517 warning("could not mark '%s' as hidden.", filename
);
522 static BOOL WINAPI
ctrl_ignore(DWORD type
)
528 int mingw_fgetc(FILE *stream
)
531 if (!isatty(_fileno(stream
)))
532 return fgetc(stream
);
534 SetConsoleCtrlHandler(ctrl_ignore
, TRUE
);
537 if (ch
!= EOF
|| GetLastError() != ERROR_OPERATION_ABORTED
)
540 /* Ctrl+C was pressed, simulate SIGINT and retry */
543 SetConsoleCtrlHandler(ctrl_ignore
, FALSE
);
548 FILE *mingw_fopen (const char *filename
, const char *otype
)
550 int hide
= needs_hiding(filename
);
552 wchar_t wfilename
[MAX_PATH
], wotype
[4];
553 if (!is_valid_win32_path(filename
)) {
554 int create
= otype
&& strchr(otype
, 'w');
555 errno
= create
? EINVAL
: ENOENT
;
558 if (filename
&& !strcmp(filename
, "/dev/null"))
559 wcscpy(wfilename
, L
"nul");
560 else if (xutftowcs_path(wfilename
, filename
) < 0)
563 if (xutftowcs(wotype
, otype
, ARRAY_SIZE(wotype
)) < 0)
566 if (hide
&& !access(filename
, F_OK
) && set_hidden_flag(wfilename
, 0)) {
567 error("could not unhide %s", filename
);
570 file
= _wfopen(wfilename
, wotype
);
571 if (!file
&& GetLastError() == ERROR_INVALID_NAME
)
573 if (file
&& hide
&& set_hidden_flag(wfilename
, 1))
574 warning("could not mark '%s' as hidden.", filename
);
578 FILE *mingw_freopen (const char *filename
, const char *otype
, FILE *stream
)
580 int hide
= needs_hiding(filename
);
582 wchar_t wfilename
[MAX_PATH
], wotype
[4];
583 if (!is_valid_win32_path(filename
)) {
584 int create
= otype
&& strchr(otype
, 'w');
585 errno
= create
? EINVAL
: ENOENT
;
588 if (filename
&& !strcmp(filename
, "/dev/null"))
589 wcscpy(wfilename
, L
"nul");
590 else if (xutftowcs_path(wfilename
, filename
) < 0)
593 if (xutftowcs(wotype
, otype
, ARRAY_SIZE(wotype
)) < 0)
596 if (hide
&& !access(filename
, F_OK
) && set_hidden_flag(wfilename
, 0)) {
597 error("could not unhide %s", filename
);
600 file
= _wfreopen(wfilename
, wotype
, stream
);
601 if (file
&& hide
&& set_hidden_flag(wfilename
, 1))
602 warning("could not mark '%s' as hidden.", filename
);
607 int mingw_fflush(FILE *stream
)
609 int ret
= fflush(stream
);
612 * write() is used behind the scenes of stdio output functions.
613 * Since git code does not check for errors after each stdio write
614 * operation, it can happen that write() is called by a later
615 * stdio function even if an earlier write() call failed. In the
616 * case of a pipe whose readable end was closed, only the first
617 * call to write() reports EPIPE on Windows. Subsequent write()
618 * calls report EINVAL. It is impossible to notice whether this
619 * fflush invocation triggered such a case, therefore, we have to
620 * catch all EINVAL errors whole-sale.
622 if (ret
&& errno
== EINVAL
)
629 ssize_t
mingw_write(int fd
, const void *buf
, size_t len
)
631 ssize_t result
= write(fd
, buf
, len
);
633 if (result
< 0 && errno
== EINVAL
&& buf
) {
634 /* check if fd is a pipe */
635 HANDLE h
= (HANDLE
) _get_osfhandle(fd
);
636 if (GetFileType(h
) == FILE_TYPE_PIPE
)
645 int mingw_access(const char *filename
, int mode
)
647 wchar_t wfilename
[MAX_PATH
];
648 if (xutftowcs_path(wfilename
, filename
) < 0)
650 /* X_OK is not supported by the MSVCRT version */
651 return _waccess(wfilename
, mode
& ~X_OK
);
654 int mingw_chdir(const char *dirname
)
656 wchar_t wdirname
[MAX_PATH
];
657 if (xutftowcs_path(wdirname
, dirname
) < 0)
659 return _wchdir(wdirname
);
662 int mingw_chmod(const char *filename
, int mode
)
664 wchar_t wfilename
[MAX_PATH
];
665 if (xutftowcs_path(wfilename
, filename
) < 0)
667 return _wchmod(wfilename
, mode
);
671 * The unit of FILETIME is 100-nanoseconds since January 1, 1601, UTC.
672 * Returns the 100-nanoseconds ("hekto nanoseconds") since the epoch.
674 static inline long long filetime_to_hnsec(const FILETIME
*ft
)
676 long long winTime
= ((long long)ft
->dwHighDateTime
<< 32) + ft
->dwLowDateTime
;
677 /* Windows to Unix Epoch conversion */
678 return winTime
- 116444736000000000LL;
681 static inline void filetime_to_timespec(const FILETIME
*ft
, struct timespec
*ts
)
683 long long hnsec
= filetime_to_hnsec(ft
);
684 ts
->tv_sec
= (time_t)(hnsec
/ 10000000);
685 ts
->tv_nsec
= (hnsec
% 10000000) * 100;
689 * Verifies that safe_create_leading_directories() would succeed.
691 static int has_valid_directory_prefix(wchar_t *wfilename
)
693 int n
= wcslen(wfilename
);
696 wchar_t c
= wfilename
[--n
];
702 wfilename
[n
] = L
'\0';
703 attributes
= GetFileAttributesW(wfilename
);
705 if (attributes
== FILE_ATTRIBUTE_DIRECTORY
||
706 attributes
== FILE_ATTRIBUTE_DEVICE
)
708 if (attributes
== INVALID_FILE_ATTRIBUTES
)
709 switch (GetLastError()) {
710 case ERROR_PATH_NOT_FOUND
:
712 case ERROR_FILE_NOT_FOUND
:
713 /* This implies parent directory exists. */
721 /* We keep the do_lstat code in a separate function to avoid recursion.
722 * When a path ends with a slash, the stat will fail with ENOENT. In
723 * this case, we strip the trailing slashes and stat again.
725 * If follow is true then act like stat() and report on the link
726 * target. Otherwise report on the link itself.
728 static int do_lstat(int follow
, const char *file_name
, struct stat
*buf
)
730 WIN32_FILE_ATTRIBUTE_DATA fdata
;
731 wchar_t wfilename
[MAX_PATH
];
732 if (xutftowcs_path(wfilename
, file_name
) < 0)
735 if (GetFileAttributesExW(wfilename
, GetFileExInfoStandard
, &fdata
)) {
740 buf
->st_mode
= file_attr_to_st_mode(fdata
.dwFileAttributes
);
741 buf
->st_size
= fdata
.nFileSizeLow
|
742 (((off_t
)fdata
.nFileSizeHigh
)<<32);
743 buf
->st_dev
= buf
->st_rdev
= 0; /* not used by Git */
744 filetime_to_timespec(&(fdata
.ftLastAccessTime
), &(buf
->st_atim
));
745 filetime_to_timespec(&(fdata
.ftLastWriteTime
), &(buf
->st_mtim
));
746 filetime_to_timespec(&(fdata
.ftCreationTime
), &(buf
->st_ctim
));
747 if (fdata
.dwFileAttributes
& FILE_ATTRIBUTE_REPARSE_POINT
) {
748 WIN32_FIND_DATAW findbuf
;
749 HANDLE handle
= FindFirstFileW(wfilename
, &findbuf
);
750 if (handle
!= INVALID_HANDLE_VALUE
) {
751 if ((findbuf
.dwFileAttributes
& FILE_ATTRIBUTE_REPARSE_POINT
) &&
752 (findbuf
.dwReserved0
== IO_REPARSE_TAG_SYMLINK
)) {
754 char buffer
[MAXIMUM_REPARSE_DATA_BUFFER_SIZE
];
755 buf
->st_size
= readlink(file_name
, buffer
, MAXIMUM_REPARSE_DATA_BUFFER_SIZE
);
757 buf
->st_mode
= S_IFLNK
;
759 buf
->st_mode
|= S_IREAD
;
760 if (!(findbuf
.dwFileAttributes
& FILE_ATTRIBUTE_READONLY
))
761 buf
->st_mode
|= S_IWRITE
;
768 switch (GetLastError()) {
769 case ERROR_ACCESS_DENIED
:
770 case ERROR_SHARING_VIOLATION
:
771 case ERROR_LOCK_VIOLATION
:
772 case ERROR_SHARING_BUFFER_EXCEEDED
:
775 case ERROR_BUFFER_OVERFLOW
:
776 errno
= ENAMETOOLONG
;
778 case ERROR_NOT_ENOUGH_MEMORY
:
781 case ERROR_PATH_NOT_FOUND
:
782 if (!has_valid_directory_prefix(wfilename
)) {
794 /* We provide our own lstat/fstat functions, since the provided
795 * lstat/fstat functions are so slow. These stat functions are
796 * tailored for Git's usage (read: fast), and are not meant to be
797 * complete. Note that Git stat()s are redirected to mingw_lstat()
798 * too, since Windows doesn't really handle symlinks that well.
800 static int do_stat_internal(int follow
, const char *file_name
, struct stat
*buf
)
803 char alt_name
[PATH_MAX
];
805 if (!do_lstat(follow
, file_name
, buf
))
808 /* if file_name ended in a '/', Windows returned ENOENT;
809 * try again without trailing slashes
814 namelen
= strlen(file_name
);
815 if (namelen
&& file_name
[namelen
-1] != '/')
817 while (namelen
&& file_name
[namelen
-1] == '/')
819 if (!namelen
|| namelen
>= PATH_MAX
)
822 memcpy(alt_name
, file_name
, namelen
);
823 alt_name
[namelen
] = 0;
824 return do_lstat(follow
, alt_name
, buf
);
827 static int get_file_info_by_handle(HANDLE hnd
, struct stat
*buf
)
829 BY_HANDLE_FILE_INFORMATION fdata
;
831 if (!GetFileInformationByHandle(hnd
, &fdata
)) {
832 errno
= err_win_to_posix(GetLastError());
840 buf
->st_mode
= file_attr_to_st_mode(fdata
.dwFileAttributes
);
841 buf
->st_size
= fdata
.nFileSizeLow
|
842 (((off_t
)fdata
.nFileSizeHigh
)<<32);
843 buf
->st_dev
= buf
->st_rdev
= 0; /* not used by Git */
844 filetime_to_timespec(&(fdata
.ftLastAccessTime
), &(buf
->st_atim
));
845 filetime_to_timespec(&(fdata
.ftLastWriteTime
), &(buf
->st_mtim
));
846 filetime_to_timespec(&(fdata
.ftCreationTime
), &(buf
->st_ctim
));
850 int mingw_lstat(const char *file_name
, struct stat
*buf
)
852 return do_stat_internal(0, file_name
, buf
);
854 int mingw_stat(const char *file_name
, struct stat
*buf
)
856 return do_stat_internal(1, file_name
, buf
);
859 int mingw_fstat(int fd
, struct stat
*buf
)
861 HANDLE fh
= (HANDLE
)_get_osfhandle(fd
);
862 DWORD avail
, type
= GetFileType(fh
) & ~FILE_TYPE_REMOTE
;
866 return get_file_info_by_handle(fh
, buf
);
870 /* initialize stat fields */
871 memset(buf
, 0, sizeof(*buf
));
874 if (type
== FILE_TYPE_CHAR
) {
875 buf
->st_mode
= _S_IFCHR
;
877 buf
->st_mode
= _S_IFIFO
;
878 if (PeekNamedPipe(fh
, NULL
, 0, NULL
, &avail
, NULL
))
879 buf
->st_size
= avail
;
889 static inline void time_t_to_filetime(time_t t
, FILETIME
*ft
)
891 long long winTime
= t
* 10000000LL + 116444736000000000LL;
892 ft
->dwLowDateTime
= winTime
;
893 ft
->dwHighDateTime
= winTime
>> 32;
896 int mingw_utime (const char *file_name
, const struct utimbuf
*times
)
901 wchar_t wfilename
[MAX_PATH
];
902 if (xutftowcs_path(wfilename
, file_name
) < 0)
905 /* must have write permission */
906 attrs
= GetFileAttributesW(wfilename
);
907 if (attrs
!= INVALID_FILE_ATTRIBUTES
&&
908 (attrs
& FILE_ATTRIBUTE_READONLY
)) {
909 /* ignore errors here; open() will report them */
910 SetFileAttributesW(wfilename
, attrs
& ~FILE_ATTRIBUTE_READONLY
);
913 if ((fh
= _wopen(wfilename
, O_RDWR
| O_BINARY
)) < 0) {
919 time_t_to_filetime(times
->modtime
, &mft
);
920 time_t_to_filetime(times
->actime
, &aft
);
922 GetSystemTimeAsFileTime(&mft
);
925 if (!SetFileTime((HANDLE
)_get_osfhandle(fh
), NULL
, &aft
, &mft
)) {
933 if (attrs
!= INVALID_FILE_ATTRIBUTES
&&
934 (attrs
& FILE_ATTRIBUTE_READONLY
)) {
935 /* ignore errors again */
936 SetFileAttributesW(wfilename
, attrs
);
942 size_t mingw_strftime(char *s
, size_t max
,
943 const char *format
, const struct tm
*tm
)
945 size_t ret
= strftime(s
, max
, format
, tm
);
947 if (!ret
&& errno
== EINVAL
)
948 die("invalid strftime format: '%s'", format
);
952 unsigned int sleep (unsigned int seconds
)
958 char *mingw_mktemp(char *template)
960 wchar_t wtemplate
[MAX_PATH
];
961 if (xutftowcs_path(wtemplate
, template) < 0)
963 if (!_wmktemp(wtemplate
))
965 if (xwcstoutf(template, wtemplate
, strlen(template) + 1) < 0)
970 int mkstemp(char *template)
972 char *filename
= mktemp(template);
973 if (filename
== NULL
)
975 return open(filename
, O_RDWR
| O_CREAT
, 0600);
978 int gettimeofday(struct timeval
*tv
, void *tz
)
983 GetSystemTimeAsFileTime(&ft
);
984 hnsec
= filetime_to_hnsec(&ft
);
985 tv
->tv_sec
= hnsec
/ 10000000;
986 tv
->tv_usec
= (hnsec
% 10000000) / 10;
990 int pipe(int filedes
[2])
994 /* this creates non-inheritable handles */
995 if (!CreatePipe(&h
[0], &h
[1], NULL
, 8192)) {
996 errno
= err_win_to_posix(GetLastError());
999 filedes
[0] = _open_osfhandle(HCAST(int, h
[0]), O_NOINHERIT
);
1000 if (filedes
[0] < 0) {
1005 filedes
[1] = _open_osfhandle(HCAST(int, h
[1]), O_NOINHERIT
);
1006 if (filedes
[1] < 0) {
1014 struct tm
*gmtime_r(const time_t *timep
, struct tm
*result
)
1016 /* gmtime() in MSVCRT.DLL is thread-safe, but not reentrant */
1017 memcpy(result
, gmtime(timep
), sizeof(struct tm
));
1021 struct tm
*localtime_r(const time_t *timep
, struct tm
*result
)
1023 /* localtime() in MSVCRT.DLL is thread-safe, but not reentrant */
1024 memcpy(result
, localtime(timep
), sizeof(struct tm
));
1028 char *mingw_getcwd(char *pointer
, int len
)
1030 wchar_t cwd
[MAX_PATH
], wpointer
[MAX_PATH
];
1031 DWORD ret
= GetCurrentDirectoryW(ARRAY_SIZE(cwd
), cwd
);
1033 if (!ret
|| ret
>= ARRAY_SIZE(cwd
)) {
1034 errno
= ret
? ENAMETOOLONG
: err_win_to_posix(GetLastError());
1037 ret
= GetLongPathNameW(cwd
, wpointer
, ARRAY_SIZE(wpointer
));
1038 if (!ret
&& GetLastError() == ERROR_ACCESS_DENIED
) {
1039 HANDLE hnd
= CreateFileW(cwd
, 0,
1040 FILE_SHARE_READ
| FILE_SHARE_WRITE
| FILE_SHARE_DELETE
, NULL
,
1041 OPEN_EXISTING
, FILE_FLAG_BACKUP_SEMANTICS
, NULL
);
1042 if (hnd
== INVALID_HANDLE_VALUE
)
1044 ret
= GetFinalPathNameByHandleW(hnd
, wpointer
, ARRAY_SIZE(wpointer
), 0);
1046 if (!ret
|| ret
>= ARRAY_SIZE(wpointer
))
1048 if (xwcstoutf(pointer
, normalize_ntpath(wpointer
), len
) < 0)
1052 if (!ret
|| ret
>= ARRAY_SIZE(wpointer
))
1054 if (xwcstoutf(pointer
, wpointer
, len
) < 0)
1056 convert_slashes(pointer
);
1061 * See "Parsing C++ Command-Line Arguments" at Microsoft's Docs:
1062 * https://docs.microsoft.com/en-us/cpp/cpp/parsing-cpp-command-line-arguments
1064 static const char *quote_arg_msvc(const char *arg
)
1066 /* count chars to quote */
1068 int force_quotes
= 0;
1070 const char *p
= arg
;
1071 if (!*p
) force_quotes
= 1;
1073 if (isspace(*p
) || *p
== '*' || *p
== '?' || *p
== '{' || *p
== '\'')
1077 else if (*p
== '\\') {
1079 while (*p
== '\\') {
1084 if (*p
== '"' || !*p
)
1091 if (!force_quotes
&& n
== 0)
1094 /* insert \ where necessary */
1095 d
= q
= xmalloc(st_add3(len
, n
, 3));
1100 else if (*arg
== '\\') {
1102 while (*arg
== '\\') {
1106 if (*arg
== '"' || !*arg
) {
1109 /* don't escape the surrounding end quote */
1124 static const char *quote_arg_msys2(const char *arg
)
1126 struct strbuf buf
= STRBUF_INIT
;
1127 const char *p2
= arg
, *p
;
1129 for (p
= arg
; *p
; p
++) {
1130 int ws
= isspace(*p
);
1131 if (!ws
&& *p
!= '\\' && *p
!= '"' && *p
!= '{' && *p
!= '\'' &&
1132 *p
!= '?' && *p
!= '*' && *p
!= '~')
1135 strbuf_addch(&buf
, '"');
1137 strbuf_add(&buf
, p2
, p
- p2
);
1138 if (*p
== '\\' || *p
== '"')
1139 strbuf_addch(&buf
, '\\');
1144 strbuf_addch(&buf
, '"');
1148 strbuf_add(&buf
, p2
, p
- p2
);
1150 strbuf_addch(&buf
, '"');
1151 return strbuf_detach(&buf
, 0);
1154 static const char *parse_interpreter(const char *cmd
)
1156 static char buf
[100];
1160 /* don't even try a .exe */
1162 if (n
>= 4 && !strcasecmp(cmd
+n
-4, ".exe"))
1165 fd
= open(cmd
, O_RDONLY
);
1168 n
= read(fd
, buf
, sizeof(buf
)-1);
1170 if (n
< 4) /* at least '#!/x' and not error */
1173 if (buf
[0] != '#' || buf
[1] != '!')
1176 p
= buf
+ strcspn(buf
, "\r\n");
1181 if (!(p
= strrchr(buf
+2, '/')) && !(p
= strrchr(buf
+2, '\\')))
1184 if ((opt
= strchr(p
+1, ' ')))
1190 * exe_only means that we only want to detect .exe files, but not scripts
1191 * (which do not have an extension)
1193 static char *lookup_prog(const char *dir
, int dirlen
, const char *cmd
,
1194 int isexe
, int exe_only
)
1196 char path
[MAX_PATH
];
1197 wchar_t wpath
[MAX_PATH
];
1198 snprintf(path
, sizeof(path
), "%.*s\\%s.exe", dirlen
, dir
, cmd
);
1200 if (xutftowcs_path(wpath
, path
) < 0)
1203 if (!isexe
&& _waccess(wpath
, F_OK
) == 0)
1204 return xstrdup(path
);
1205 wpath
[wcslen(wpath
)-4] = '\0';
1206 if ((!exe_only
|| isexe
) && _waccess(wpath
, F_OK
) == 0) {
1207 if (!(GetFileAttributesW(wpath
) & FILE_ATTRIBUTE_DIRECTORY
)) {
1208 path
[strlen(path
)-4] = '\0';
1209 return xstrdup(path
);
1216 * Determines the absolute path of cmd using the split path in path.
1217 * If cmd contains a slash or backslash, no lookup is performed.
1219 static char *path_lookup(const char *cmd
, int exe_only
)
1223 int len
= strlen(cmd
);
1224 int isexe
= len
>= 4 && !strcasecmp(cmd
+len
-4, ".exe");
1226 if (strchr(cmd
, '/') || strchr(cmd
, '\\'))
1227 return xstrdup(cmd
);
1229 path
= mingw_getenv("PATH");
1234 const char *sep
= strchrnul(path
, ';');
1235 int dirlen
= sep
- path
;
1237 prog
= lookup_prog(path
, dirlen
, cmd
, isexe
, exe_only
);
1246 static const wchar_t *wcschrnul(const wchar_t *s
, wchar_t c
)
1248 while (*s
&& *s
!= c
)
1253 /* Compare only keys */
1254 static int wenvcmp(const void *a
, const void *b
)
1256 wchar_t *p
= *(wchar_t **)a
, *q
= *(wchar_t **)b
;
1257 size_t p_len
, q_len
;
1260 p_len
= wcschrnul(p
, L
'=') - p
;
1261 q_len
= wcschrnul(q
, L
'=') - q
;
1263 /* If the length differs, include the shorter key's NUL */
1266 else if (p_len
> q_len
)
1269 return _wcsnicmp(p
, q
, p_len
);
1273 * Build an environment block combining the inherited environment
1274 * merged with the given list of settings.
1276 * Values of the form "KEY=VALUE" in deltaenv override inherited values.
1277 * Values of the form "KEY" in deltaenv delete inherited values.
1279 * Multiple entries in deltaenv for the same key are explicitly allowed.
1281 * We return a contiguous block of UNICODE strings with a final trailing
1284 static wchar_t *make_environment_block(char **deltaenv
)
1286 wchar_t *wenv
= GetEnvironmentStringsW(), *wdeltaenv
, *result
, *p
;
1287 size_t wlen
, s
, delta_size
, size
;
1289 wchar_t **array
= NULL
;
1290 size_t alloc
= 0, nr
= 0, i
;
1292 size
= 1; /* for extra NUL at the end */
1294 /* If there is no deltaenv to apply, simply return a copy. */
1295 if (!deltaenv
|| !*deltaenv
) {
1296 for (p
= wenv
; p
&& *p
; ) {
1297 size_t s
= wcslen(p
) + 1;
1302 ALLOC_ARRAY(result
, size
);
1303 COPY_ARRAY(result
, wenv
, size
);
1304 FreeEnvironmentStringsW(wenv
);
1309 * If there is a deltaenv, let's accumulate all keys into `array`,
1310 * sort them using the stable git_stable_qsort() and then copy,
1311 * skipping duplicate keys
1313 for (p
= wenv
; p
&& *p
; ) {
1314 ALLOC_GROW(array
, nr
+ 1, alloc
);
1321 /* (over-)assess size needed for wchar version of deltaenv */
1322 for (delta_size
= 0, i
= 0; deltaenv
[i
]; i
++)
1323 delta_size
+= strlen(deltaenv
[i
]) * 2 + 1;
1324 ALLOC_ARRAY(wdeltaenv
, delta_size
);
1326 /* convert the deltaenv, appending to array */
1327 for (i
= 0, p
= wdeltaenv
; deltaenv
[i
]; i
++) {
1328 ALLOC_GROW(array
, nr
+ 1, alloc
);
1329 wlen
= xutftowcs(p
, deltaenv
[i
], wdeltaenv
+ delta_size
- p
);
1334 git_stable_qsort(array
, nr
, sizeof(*array
), wenvcmp
);
1335 ALLOC_ARRAY(result
, size
+ delta_size
);
1337 for (p
= result
, i
= 0; i
< nr
; i
++) {
1338 /* Skip any duplicate keys; last one wins */
1339 while (i
+ 1 < nr
&& !wenvcmp(array
+ i
, array
+ i
+ 1))
1342 /* Skip "to delete" entry */
1343 if (!wcschr(array
[i
], L
'='))
1346 size
= wcslen(array
[i
]) + 1;
1347 COPY_ARRAY(p
, array
[i
], size
);
1354 FreeEnvironmentStringsW(wenv
);
1358 static void do_unset_environment_variables(void)
1361 char *p
= unset_environment_variables
;
1368 char *comma
= strchr(p
, ',');
1380 struct pinfo_t
*next
;
1384 static struct pinfo_t
*pinfo
= NULL
;
1385 CRITICAL_SECTION pinfo_cs
;
1387 /* Used to match and chomp off path components */
1388 static inline int match_last_path_component(const char *path
, size_t *len
,
1389 const char *component
)
1391 size_t component_len
= strlen(component
);
1392 if (*len
< component_len
+ 1 ||
1393 !is_dir_sep(path
[*len
- component_len
- 1]) ||
1394 fspathncmp(path
+ *len
- component_len
, component
, component_len
))
1396 *len
-= component_len
+ 1;
1397 /* chomp off repeated dir separators */
1398 while (*len
> 0 && is_dir_sep(path
[*len
- 1]))
1403 static int is_msys2_sh(const char *cmd
)
1408 if (!strcmp(cmd
, "sh")) {
1409 static int ret
= -1;
1415 p
= path_lookup(cmd
, 0);
1419 size_t len
= strlen(p
);
1421 ret
= match_last_path_component(p
, &len
, "sh.exe") &&
1422 match_last_path_component(p
, &len
, "bin") &&
1423 match_last_path_component(p
, &len
, "usr");
1429 if (ends_with(cmd
, "\\sh.exe")) {
1433 sh
= path_lookup("sh", 0);
1435 return !fspathcmp(cmd
, sh
);
1441 static pid_t
mingw_spawnve_fd(const char *cmd
, const char **argv
, char **deltaenv
,
1443 int prepend_cmd
, int fhin
, int fhout
, int fherr
)
1446 PROCESS_INFORMATION pi
;
1448 wchar_t wcmd
[MAX_PATH
], wdir
[MAX_PATH
], *wargs
, *wenvblk
= NULL
;
1449 unsigned flags
= CREATE_UNICODE_ENVIRONMENT
;
1452 const char *(*quote_arg
)(const char *arg
) =
1453 is_msys2_sh(cmd
? cmd
: *argv
) ?
1454 quote_arg_msys2
: quote_arg_msvc
;
1456 do_unset_environment_variables();
1458 /* Determine whether or not we are associated to a console */
1459 cons
= CreateFileW(L
"CONOUT$", GENERIC_WRITE
,
1460 FILE_SHARE_WRITE
, NULL
, OPEN_EXISTING
,
1461 FILE_ATTRIBUTE_NORMAL
, NULL
);
1462 if (cons
== INVALID_HANDLE_VALUE
) {
1463 /* There is no console associated with this process.
1464 * Since the child is a console process, Windows
1465 * would normally create a console window. But
1466 * since we'll be redirecting std streams, we do
1467 * not need the console.
1468 * It is necessary to use DETACHED_PROCESS
1469 * instead of CREATE_NO_WINDOW to make ssh
1470 * recognize that it has no console.
1472 flags
|= DETACHED_PROCESS
;
1474 /* There is already a console. If we specified
1475 * DETACHED_PROCESS here, too, Windows would
1476 * disassociate the child from the console.
1477 * The same is true for CREATE_NO_WINDOW.
1482 memset(&si
, 0, sizeof(si
));
1484 si
.dwFlags
= STARTF_USESTDHANDLES
;
1485 si
.hStdInput
= winansi_get_osfhandle(fhin
);
1486 si
.hStdOutput
= winansi_get_osfhandle(fhout
);
1487 si
.hStdError
= winansi_get_osfhandle(fherr
);
1489 if (*argv
&& !strcmp(cmd
, *argv
))
1491 else if (xutftowcs_path(wcmd
, cmd
) < 0)
1493 if (dir
&& xutftowcs_path(wdir
, dir
) < 0)
1496 /* concatenate argv, quoting args as we go */
1497 strbuf_init(&args
, 0);
1499 char *quoted
= (char *)quote_arg(cmd
);
1500 strbuf_addstr(&args
, quoted
);
1504 for (; *argv
; argv
++) {
1505 char *quoted
= (char *)quote_arg(*argv
);
1507 strbuf_addch(&args
, ' ');
1508 strbuf_addstr(&args
, quoted
);
1509 if (quoted
!= *argv
)
1513 ALLOC_ARRAY(wargs
, st_add(st_mult(2, args
.len
), 1));
1514 xutftowcs(wargs
, args
.buf
, 2 * args
.len
+ 1);
1515 strbuf_release(&args
);
1517 wenvblk
= make_environment_block(deltaenv
);
1519 memset(&pi
, 0, sizeof(pi
));
1520 ret
= CreateProcessW(*wcmd
? wcmd
: NULL
, wargs
, NULL
, NULL
, TRUE
,
1521 flags
, wenvblk
, dir
? wdir
: NULL
, &si
, &pi
);
1530 CloseHandle(pi
.hThread
);
1533 * The process ID is the human-readable identifier of the process
1534 * that we want to present in log and error messages. The handle
1535 * is not useful for this purpose. But we cannot close it, either,
1536 * because it is not possible to turn a process ID into a process
1537 * handle after the process terminated.
1538 * Keep the handle in a list for waitpid.
1540 EnterCriticalSection(&pinfo_cs
);
1542 struct pinfo_t
*info
= xmalloc(sizeof(struct pinfo_t
));
1543 info
->pid
= pi
.dwProcessId
;
1544 info
->proc
= pi
.hProcess
;
1548 LeaveCriticalSection(&pinfo_cs
);
1550 return (pid_t
)pi
.dwProcessId
;
1553 static pid_t
mingw_spawnv(const char *cmd
, const char **argv
, int prepend_cmd
)
1555 return mingw_spawnve_fd(cmd
, argv
, NULL
, NULL
, prepend_cmd
, 0, 1, 2);
1558 pid_t
mingw_spawnvpe(const char *cmd
, const char **argv
, char **deltaenv
,
1560 int fhin
, int fhout
, int fherr
)
1563 char *prog
= path_lookup(cmd
, 0);
1570 const char *interpr
= parse_interpreter(prog
);
1573 const char *argv0
= argv
[0];
1574 char *iprog
= path_lookup(interpr
, 1);
1581 pid
= mingw_spawnve_fd(iprog
, argv
, deltaenv
, dir
, 1,
1582 fhin
, fhout
, fherr
);
1588 pid
= mingw_spawnve_fd(prog
, argv
, deltaenv
, dir
, 0,
1589 fhin
, fhout
, fherr
);
1595 static int try_shell_exec(const char *cmd
, char *const *argv
)
1597 const char *interpr
= parse_interpreter(cmd
);
1603 prog
= path_lookup(interpr
, 1);
1611 while (argv
[argc
]) argc
++;
1612 ALLOC_ARRAY(argv2
, argc
+ 1);
1613 argv2
[0] = (char *)cmd
; /* full path to the script file */
1614 memcpy(&argv2
[1], &argv
[1], sizeof(*argv
) * argc
);
1615 exec_id
= trace2_exec(prog
, argv2
);
1616 pid
= mingw_spawnv(prog
, argv2
, 1);
1619 if (waitpid(pid
, &status
, 0) < 0)
1621 trace2_exec_result(exec_id
, status
);
1624 trace2_exec_result(exec_id
, -1);
1625 pid
= 1; /* indicate that we tried but failed */
1632 int mingw_execv(const char *cmd
, char *const *argv
)
1634 /* check if git_command is a shell script */
1635 if (!try_shell_exec(cmd
, argv
)) {
1639 exec_id
= trace2_exec(cmd
, (const char **)argv
);
1640 pid
= mingw_spawnv(cmd
, (const char **)argv
, 0);
1642 trace2_exec_result(exec_id
, -1);
1645 if (waitpid(pid
, &status
, 0) < 0)
1647 trace2_exec_result(exec_id
, status
);
1653 int mingw_execvp(const char *cmd
, char *const *argv
)
1655 char *prog
= path_lookup(cmd
, 0);
1658 mingw_execv(prog
, argv
);
1666 int mingw_kill(pid_t pid
, int sig
)
1668 if (pid
> 0 && sig
== SIGTERM
) {
1669 HANDLE h
= OpenProcess(PROCESS_TERMINATE
, FALSE
, pid
);
1671 if (TerminateProcess(h
, -1)) {
1676 errno
= err_win_to_posix(GetLastError());
1679 } else if (pid
> 0 && sig
== 0) {
1680 HANDLE h
= OpenProcess(PROCESS_QUERY_INFORMATION
, FALSE
, pid
);
1692 * UTF-8 versions of getenv(), putenv() and unsetenv().
1693 * Internally, they use the CRT's stock UNICODE routines
1694 * to avoid data loss.
1696 char *mingw_getenv(const char *name
)
1698 #define GETENV_MAX_RETAIN 64
1699 static char *values
[GETENV_MAX_RETAIN
];
1700 static int value_counter
;
1701 int len_key
, len_value
;
1704 wchar_t w_value
[32768];
1706 if (!name
|| !*name
)
1709 len_key
= strlen(name
) + 1;
1710 /* We cannot use xcalloc() here because that uses getenv() itself */
1711 w_key
= calloc(len_key
, sizeof(wchar_t));
1713 die("Out of memory, (tried to allocate %u wchar_t's)", len_key
);
1714 xutftowcs(w_key
, name
, len_key
);
1715 /* GetEnvironmentVariableW() only sets the last error upon failure */
1716 SetLastError(ERROR_SUCCESS
);
1717 len_value
= GetEnvironmentVariableW(w_key
, w_value
, ARRAY_SIZE(w_value
));
1718 if (!len_value
&& GetLastError() == ERROR_ENVVAR_NOT_FOUND
) {
1724 len_value
= len_value
* 3 + 1;
1725 /* We cannot use xcalloc() here because that uses getenv() itself */
1726 value
= calloc(len_value
, sizeof(char));
1728 die("Out of memory, (tried to allocate %u bytes)", len_value
);
1729 xwcstoutf(value
, w_value
, len_value
);
1732 * We return `value` which is an allocated value and the caller is NOT
1733 * expecting to have to free it, so we keep a round-robin array,
1734 * invalidating the buffer after GETENV_MAX_RETAIN getenv() calls.
1736 free(values
[value_counter
]);
1737 values
[value_counter
++] = value
;
1738 if (value_counter
>= ARRAY_SIZE(values
))
1744 int mingw_putenv(const char *namevalue
)
1747 wchar_t *wide
, *equal
;
1750 if (!namevalue
|| !*namevalue
)
1753 size
= strlen(namevalue
) * 2 + 1;
1754 wide
= calloc(size
, sizeof(wchar_t));
1756 die("Out of memory, (tried to allocate %u wchar_t's)", size
);
1757 xutftowcs(wide
, namevalue
, size
);
1758 equal
= wcschr(wide
, L
'=');
1760 result
= SetEnvironmentVariableW(wide
, NULL
);
1763 result
= SetEnvironmentVariableW(wide
, equal
+ 1);
1768 errno
= err_win_to_posix(GetLastError());
1770 return result
? 0 : -1;
1773 static void ensure_socket_initialization(void)
1776 static int initialized
= 0;
1781 if (WSAStartup(MAKEWORD(2,2), &wsa
))
1782 die("unable to initialize winsock subsystem, error %d",
1785 atexit((void(*)(void)) WSACleanup
);
1790 int mingw_gethostname(char *name
, int namelen
)
1792 ensure_socket_initialization();
1793 return gethostname(name
, namelen
);
1796 #undef gethostbyname
1797 struct hostent
*mingw_gethostbyname(const char *host
)
1799 ensure_socket_initialization();
1800 return gethostbyname(host
);
1804 int mingw_getaddrinfo(const char *node
, const char *service
,
1805 const struct addrinfo
*hints
, struct addrinfo
**res
)
1807 ensure_socket_initialization();
1808 return getaddrinfo(node
, service
, hints
, res
);
1811 int mingw_socket(int domain
, int type
, int protocol
)
1816 ensure_socket_initialization();
1817 s
= WSASocket(domain
, type
, protocol
, NULL
, 0, 0);
1818 if (s
== INVALID_SOCKET
) {
1820 * WSAGetLastError() values are regular BSD error codes
1821 * biased by WSABASEERR.
1822 * However, strerror() does not know about networking
1823 * specific errors, which are values beginning at 38 or so.
1824 * Therefore, we choose to leave the biased error code
1825 * in errno so that _if_ someone looks up the code somewhere,
1826 * then it is at least the number that are usually listed.
1828 errno
= WSAGetLastError();
1831 /* convert into a file descriptor */
1832 if ((sockfd
= _open_osfhandle(s
, O_RDWR
|O_BINARY
)) < 0) {
1834 return error("unable to make a socket file descriptor: %s",
1841 int mingw_connect(int sockfd
, struct sockaddr
*sa
, size_t sz
)
1843 SOCKET s
= (SOCKET
)_get_osfhandle(sockfd
);
1844 return connect(s
, sa
, sz
);
1848 int mingw_bind(int sockfd
, struct sockaddr
*sa
, size_t sz
)
1850 SOCKET s
= (SOCKET
)_get_osfhandle(sockfd
);
1851 return bind(s
, sa
, sz
);
1855 int mingw_setsockopt(int sockfd
, int lvl
, int optname
, void *optval
, int optlen
)
1857 SOCKET s
= (SOCKET
)_get_osfhandle(sockfd
);
1858 return setsockopt(s
, lvl
, optname
, (const char*)optval
, optlen
);
1862 int mingw_shutdown(int sockfd
, int how
)
1864 SOCKET s
= (SOCKET
)_get_osfhandle(sockfd
);
1865 return shutdown(s
, how
);
1869 int mingw_listen(int sockfd
, int backlog
)
1871 SOCKET s
= (SOCKET
)_get_osfhandle(sockfd
);
1872 return listen(s
, backlog
);
1876 int mingw_accept(int sockfd1
, struct sockaddr
*sa
, socklen_t
*sz
)
1880 SOCKET s1
= (SOCKET
)_get_osfhandle(sockfd1
);
1881 SOCKET s2
= accept(s1
, sa
, sz
);
1883 /* convert into a file descriptor */
1884 if ((sockfd2
= _open_osfhandle(s2
, O_RDWR
|O_BINARY
)) < 0) {
1887 return error("unable to make a socket file descriptor: %s",
1894 int mingw_rename(const char *pold
, const char *pnew
)
1898 wchar_t wpold
[MAX_PATH
], wpnew
[MAX_PATH
];
1899 if (xutftowcs_path(wpold
, pold
) < 0 || xutftowcs_path(wpnew
, pnew
) < 0)
1903 * Try native rename() first to get errno right.
1904 * It is based on MoveFile(), which cannot overwrite existing files.
1906 if (!_wrename(wpold
, wpnew
))
1908 if (errno
!= EEXIST
)
1911 if (MoveFileExW(wpold
, wpnew
, MOVEFILE_REPLACE_EXISTING
))
1913 /* TODO: translate more errors */
1914 gle
= GetLastError();
1915 if (gle
== ERROR_ACCESS_DENIED
&&
1916 (attrs
= GetFileAttributesW(wpnew
)) != INVALID_FILE_ATTRIBUTES
) {
1917 if (attrs
& FILE_ATTRIBUTE_DIRECTORY
) {
1918 DWORD attrsold
= GetFileAttributesW(wpold
);
1919 if (attrsold
== INVALID_FILE_ATTRIBUTES
||
1920 !(attrsold
& FILE_ATTRIBUTE_DIRECTORY
))
1922 else if (!_wrmdir(wpnew
))
1926 if ((attrs
& FILE_ATTRIBUTE_READONLY
) &&
1927 SetFileAttributesW(wpnew
, attrs
& ~FILE_ATTRIBUTE_READONLY
)) {
1928 if (MoveFileExW(wpold
, wpnew
, MOVEFILE_REPLACE_EXISTING
))
1930 gle
= GetLastError();
1931 /* revert file attributes on failure */
1932 SetFileAttributesW(wpnew
, attrs
);
1935 if (tries
< ARRAY_SIZE(delay
) && gle
== ERROR_ACCESS_DENIED
) {
1937 * We assume that some other process had the source or
1938 * destination file open at the wrong moment and retry.
1939 * In order to give the other process a higher chance to
1940 * complete its operation, we give up our time slice now.
1941 * If we have to retry again, we do sleep a bit.
1943 Sleep(delay
[tries
]);
1947 if (gle
== ERROR_ACCESS_DENIED
&&
1948 ask_yes_no_if_possible("Rename from '%s' to '%s' failed. "
1949 "Should I try again?", pold
, pnew
))
1957 * Note that this doesn't return the actual pagesize, but
1958 * the allocation granularity. If future Windows specific git code
1959 * needs the real getpagesize function, we need to find another solution.
1961 int mingw_getpagesize(void)
1965 return si
.dwAllocationGranularity
;
1968 /* See https://msdn.microsoft.com/en-us/library/windows/desktop/ms724435.aspx */
1969 enum EXTENDED_NAME_FORMAT
{
1971 NameUserPrincipal
= 8
1974 static char *get_extended_user_info(enum EXTENDED_NAME_FORMAT type
)
1976 DECLARE_PROC_ADDR(secur32
.dll
, BOOL
, GetUserNameExW
,
1977 enum EXTENDED_NAME_FORMAT
, LPCWSTR
, PULONG
);
1978 static wchar_t wbuffer
[1024];
1981 if (!INIT_PROC_ADDR(GetUserNameExW
))
1984 len
= ARRAY_SIZE(wbuffer
);
1985 if (GetUserNameExW(type
, wbuffer
, &len
)) {
1986 char *converted
= xmalloc((len
*= 3));
1987 if (xwcstoutf(converted
, wbuffer
, len
) >= 0)
1995 char *mingw_query_user_email(void)
1997 return get_extended_user_info(NameUserPrincipal
);
2000 struct passwd
*getpwuid(int uid
)
2002 static unsigned initialized
;
2003 static char user_name
[100];
2004 static struct passwd
*p
;
2011 len
= ARRAY_SIZE(buf
);
2012 if (!GetUserNameW(buf
, &len
)) {
2017 if (xwcstoutf(user_name
, buf
, sizeof(user_name
)) < 0) {
2022 p
= xmalloc(sizeof(*p
));
2023 p
->pw_name
= user_name
;
2024 p
->pw_gecos
= get_extended_user_info(NameDisplay
);
2026 p
->pw_gecos
= "unknown";
2033 static HANDLE timer_event
;
2034 static HANDLE timer_thread
;
2035 static int timer_interval
;
2036 static int one_shot
;
2037 static sig_handler_t timer_fn
= SIG_DFL
, sigint_fn
= SIG_DFL
;
2039 /* The timer works like this:
2040 * The thread, ticktack(), is a trivial routine that most of the time
2041 * only waits to receive the signal to terminate. The main thread tells
2042 * the thread to terminate by setting the timer_event to the signalled
2044 * But ticktack() interrupts the wait state after the timer's interval
2045 * length to call the signal handler.
2048 static unsigned __stdcall
ticktack(void *dummy
)
2050 while (WaitForSingleObject(timer_event
, timer_interval
) == WAIT_TIMEOUT
) {
2051 mingw_raise(SIGALRM
);
2058 static int start_timer_thread(void)
2060 timer_event
= CreateEvent(NULL
, FALSE
, FALSE
, NULL
);
2062 timer_thread
= (HANDLE
) _beginthreadex(NULL
, 0, ticktack
, NULL
, 0, NULL
);
2064 return errno
= ENOMEM
,
2065 error("cannot start timer thread");
2067 return errno
= ENOMEM
,
2068 error("cannot allocate resources for timer");
2072 static void stop_timer_thread(void)
2075 SetEvent(timer_event
); /* tell thread to terminate */
2077 int rc
= WaitForSingleObject(timer_thread
, 10000);
2078 if (rc
== WAIT_TIMEOUT
)
2079 error("timer thread did not terminate timely");
2080 else if (rc
!= WAIT_OBJECT_0
)
2081 error("waiting for timer thread failed: %lu",
2083 CloseHandle(timer_thread
);
2086 CloseHandle(timer_event
);
2088 timer_thread
= NULL
;
2091 static inline int is_timeval_eq(const struct timeval
*i1
, const struct timeval
*i2
)
2093 return i1
->tv_sec
== i2
->tv_sec
&& i1
->tv_usec
== i2
->tv_usec
;
2096 int setitimer(int type
, struct itimerval
*in
, struct itimerval
*out
)
2098 static const struct timeval zero
;
2099 static int atexit_done
;
2102 return errno
= EINVAL
,
2103 error("setitimer param 3 != NULL not implemented");
2104 if (!is_timeval_eq(&in
->it_interval
, &zero
) &&
2105 !is_timeval_eq(&in
->it_interval
, &in
->it_value
))
2106 return errno
= EINVAL
,
2107 error("setitimer: it_interval must be zero or eq it_value");
2110 stop_timer_thread();
2112 if (is_timeval_eq(&in
->it_value
, &zero
) &&
2113 is_timeval_eq(&in
->it_interval
, &zero
))
2116 timer_interval
= in
->it_value
.tv_sec
* 1000 + in
->it_value
.tv_usec
/ 1000;
2117 one_shot
= is_timeval_eq(&in
->it_interval
, &zero
);
2119 atexit(stop_timer_thread
);
2122 return start_timer_thread();
2125 int sigaction(int sig
, struct sigaction
*in
, struct sigaction
*out
)
2128 return errno
= EINVAL
,
2129 error("sigaction only implemented for SIGALRM");
2131 return errno
= EINVAL
,
2132 error("sigaction: param 3 != NULL not implemented");
2134 timer_fn
= in
->sa_handler
;
2139 sig_handler_t
mingw_signal(int sig
, sig_handler_t handler
)
2151 sigint_fn
= handler
;
2155 return signal(sig
, handler
);
2162 int mingw_raise(int sig
)
2166 if (timer_fn
== SIG_DFL
) {
2167 if (isatty(STDERR_FILENO
))
2168 fputs("Alarm clock\n", stderr
);
2169 exit(128 + SIGALRM
);
2170 } else if (timer_fn
!= SIG_IGN
)
2175 if (sigint_fn
== SIG_DFL
)
2177 else if (sigint_fn
!= SIG_IGN
)
2181 #if defined(_MSC_VER)
2188 case SIGABRT_COMPAT
:
2190 * The <signal.h> header in the MS C Runtime defines 8 signals
2191 * as being supported on the platform. Anything else causes an
2192 * "Invalid signal or error" (which in DEBUG builds causes the
2193 * Abort/Retry/Ignore dialog). We by-pass the CRT for things we
2194 * already know will fail.
2211 int link(const char *oldpath
, const char *newpath
)
2213 wchar_t woldpath
[MAX_PATH
], wnewpath
[MAX_PATH
];
2214 if (xutftowcs_path(woldpath
, oldpath
) < 0 ||
2215 xutftowcs_path(wnewpath
, newpath
) < 0)
2218 if (!CreateHardLinkW(wnewpath
, woldpath
, NULL
)) {
2219 errno
= err_win_to_posix(GetLastError());
2225 pid_t
waitpid(pid_t pid
, int *status
, int options
)
2227 HANDLE h
= OpenProcess(SYNCHRONIZE
| PROCESS_QUERY_INFORMATION
,
2234 if (pid
> 0 && options
& WNOHANG
) {
2235 if (WAIT_OBJECT_0
!= WaitForSingleObject(h
, 0)) {
2239 options
&= ~WNOHANG
;
2243 struct pinfo_t
**ppinfo
;
2244 if (WaitForSingleObject(h
, INFINITE
) != WAIT_OBJECT_0
) {
2250 GetExitCodeProcess(h
, (LPDWORD
)status
);
2252 EnterCriticalSection(&pinfo_cs
);
2256 struct pinfo_t
*info
= *ppinfo
;
2257 if (info
->pid
== pid
) {
2258 CloseHandle(info
->proc
);
2259 *ppinfo
= info
->next
;
2263 ppinfo
= &info
->next
;
2266 LeaveCriticalSection(&pinfo_cs
);
2277 int xutftowcsn(wchar_t *wcs
, const char *utfs
, size_t wcslen
, int utflen
)
2279 int upos
= 0, wpos
= 0;
2280 const unsigned char *utf
= (const unsigned char*) utfs
;
2281 if (!utf
|| !wcs
|| wcslen
< 1) {
2285 /* reserve space for \0 */
2290 while (upos
< utflen
) {
2291 int c
= utf
[upos
++] & 0xff;
2292 if (utflen
== INT_MAX
&& c
== 0)
2295 if (wpos
>= wcslen
) {
2304 } else if (c
>= 0xc2 && c
< 0xe0 && upos
< utflen
&&
2305 (utf
[upos
] & 0xc0) == 0x80) {
2307 c
= ((c
& 0x1f) << 6);
2308 c
|= (utf
[upos
++] & 0x3f);
2310 } else if (c
>= 0xe0 && c
< 0xf0 && upos
+ 1 < utflen
&&
2311 !(c
== 0xe0 && utf
[upos
] < 0xa0) && /* over-long encoding */
2312 (utf
[upos
] & 0xc0) == 0x80 &&
2313 (utf
[upos
+ 1] & 0xc0) == 0x80) {
2315 c
= ((c
& 0x0f) << 12);
2316 c
|= ((utf
[upos
++] & 0x3f) << 6);
2317 c
|= (utf
[upos
++] & 0x3f);
2319 } else if (c
>= 0xf0 && c
< 0xf5 && upos
+ 2 < utflen
&&
2320 wpos
+ 1 < wcslen
&&
2321 !(c
== 0xf0 && utf
[upos
] < 0x90) && /* over-long encoding */
2322 !(c
== 0xf4 && utf
[upos
] >= 0x90) && /* > \u10ffff */
2323 (utf
[upos
] & 0xc0) == 0x80 &&
2324 (utf
[upos
+ 1] & 0xc0) == 0x80 &&
2325 (utf
[upos
+ 2] & 0xc0) == 0x80) {
2326 /* 4-byte utf-8: convert to \ud8xx \udcxx surrogate pair */
2327 c
= ((c
& 0x07) << 18);
2328 c
|= ((utf
[upos
++] & 0x3f) << 12);
2329 c
|= ((utf
[upos
++] & 0x3f) << 6);
2330 c
|= (utf
[upos
++] & 0x3f);
2332 wcs
[wpos
++] = 0xd800 | (c
>> 10);
2333 wcs
[wpos
++] = 0xdc00 | (c
& 0x3ff);
2334 } else if (c
>= 0xa0) {
2335 /* invalid utf-8 byte, printable unicode char: convert 1:1 */
2338 /* invalid utf-8 byte, non-printable unicode: convert to hex */
2339 static const char *hex
= "0123456789abcdef";
2340 wcs
[wpos
++] = hex
[c
>> 4];
2342 wcs
[wpos
++] = hex
[c
& 0x0f];
2349 int xwcstoutf(char *utf
, const wchar_t *wcs
, size_t utflen
)
2351 if (!wcs
|| !utf
|| utflen
< 1) {
2355 utflen
= WideCharToMultiByte(CP_UTF8
, 0, wcs
, -1, utf
, utflen
, NULL
, NULL
);
2362 static void setup_windows_environment(void)
2364 char *tmp
= getenv("TMPDIR");
2366 /* on Windows it is TMP and TEMP */
2368 if (!(tmp
= getenv("TMP")))
2369 tmp
= getenv("TEMP");
2371 setenv("TMPDIR", tmp
, 1);
2372 tmp
= getenv("TMPDIR");
2378 * Convert all dir separators to forward slashes,
2379 * to help shell commands called from the Git
2380 * executable (by not mistaking the dir separators
2381 * for escape characters).
2383 convert_slashes(tmp
);
2386 /* simulate TERM to enable auto-color (see color.c) */
2387 if (!getenv("TERM"))
2388 setenv("TERM", "cygwin", 1);
2390 /* calculate HOME if not set */
2391 if (!getenv("HOME")) {
2393 * try $HOMEDRIVE$HOMEPATH - the home share may be a network
2394 * location, thus also check if the path exists (i.e. is not
2397 if ((tmp
= getenv("HOMEDRIVE"))) {
2398 struct strbuf buf
= STRBUF_INIT
;
2399 strbuf_addstr(&buf
, tmp
);
2400 if ((tmp
= getenv("HOMEPATH"))) {
2401 strbuf_addstr(&buf
, tmp
);
2402 if (is_directory(buf
.buf
))
2403 setenv("HOME", buf
.buf
, 1);
2405 tmp
= NULL
; /* use $USERPROFILE */
2407 strbuf_release(&buf
);
2409 /* use $USERPROFILE if the home share is not available */
2410 if (!tmp
&& (tmp
= getenv("USERPROFILE")))
2411 setenv("HOME", tmp
, 1);
2415 int is_valid_win32_path(const char *path
)
2417 int preceding_space_or_period
= 0, i
= 0, periods
= 0;
2422 skip_dos_drive_prefix((char **)&path
);
2428 case '/': case '\\':
2429 /* cannot end in ` ` or `.`, except for `.` and `..` */
2430 if (preceding_space_or_period
&&
2431 (i
!= periods
|| periods
> 2))
2436 i
= periods
= preceding_space_or_period
= 0;
2442 preceding_space_or_period
= 1;
2445 case ':': /* DOS drive prefix was already skipped */
2446 case '<': case '>': case '"': case '|': case '?': case '*':
2447 /* illegal character */
2450 if (c
> '\0' && c
< '\x20')
2451 /* illegal character */
2454 preceding_space_or_period
= 0;
2459 #if !defined(_MSC_VER)
2461 * Disable MSVCRT command line wildcard expansion (__getmainargs called from
2462 * mingw startup code, see init.c in mingw runtime).
2467 static NORETURN
void die_startup(void)
2469 fputs("fatal: not enough memory for initialization", stderr
);
2473 static void *malloc_startup(size_t size
)
2475 void *result
= malloc(size
);
2481 static char *wcstoutfdup_startup(char *buffer
, const wchar_t *wcs
, size_t len
)
2483 len
= xwcstoutf(buffer
, wcs
, len
) + 1;
2484 return memcpy(malloc_startup(len
), buffer
, len
);
2487 static void maybe_redirect_std_handle(const wchar_t *key
, DWORD std_id
, int fd
,
2488 DWORD desired_access
, DWORD flags
)
2490 DWORD create_flag
= fd
? OPEN_ALWAYS
: OPEN_EXISTING
;
2491 wchar_t buf
[MAX_PATH
];
2492 DWORD max
= ARRAY_SIZE(buf
);
2494 DWORD ret
= GetEnvironmentVariableW(key
, buf
, max
);
2496 if (!ret
|| ret
>= max
)
2499 /* make sure this does not leak into child processes */
2500 SetEnvironmentVariableW(key
, NULL
);
2501 if (!wcscmp(buf
, L
"off")) {
2503 handle
= GetStdHandle(std_id
);
2504 if (handle
!= INVALID_HANDLE_VALUE
)
2505 CloseHandle(handle
);
2508 if (std_id
== STD_ERROR_HANDLE
&& !wcscmp(buf
, L
"2>&1")) {
2509 handle
= GetStdHandle(STD_OUTPUT_HANDLE
);
2510 if (handle
== INVALID_HANDLE_VALUE
) {
2512 handle
= GetStdHandle(std_id
);
2513 if (handle
!= INVALID_HANDLE_VALUE
)
2514 CloseHandle(handle
);
2516 int new_fd
= _open_osfhandle((intptr_t)handle
, O_BINARY
);
2517 SetStdHandle(std_id
, handle
);
2519 /* do *not* close the new_fd: that would close stdout */
2523 handle
= CreateFileW(buf
, desired_access
, 0, NULL
, create_flag
,
2525 if (handle
!= INVALID_HANDLE_VALUE
) {
2526 int new_fd
= _open_osfhandle((intptr_t)handle
, O_BINARY
);
2527 SetStdHandle(std_id
, handle
);
2533 static void maybe_redirect_std_handles(void)
2535 maybe_redirect_std_handle(L
"GIT_REDIRECT_STDIN", STD_INPUT_HANDLE
, 0,
2536 GENERIC_READ
, FILE_ATTRIBUTE_NORMAL
);
2537 maybe_redirect_std_handle(L
"GIT_REDIRECT_STDOUT", STD_OUTPUT_HANDLE
, 1,
2538 GENERIC_WRITE
, FILE_ATTRIBUTE_NORMAL
);
2539 maybe_redirect_std_handle(L
"GIT_REDIRECT_STDERR", STD_ERROR_HANDLE
, 2,
2540 GENERIC_WRITE
, FILE_FLAG_NO_BUFFERING
);
2550 * We implement wmain() and compile with -municode, which would
2551 * normally ignore main(), but we call the latter from the former
2552 * so that we can handle non-ASCII command-line parameters
2555 * To be more compatible with the core git code, we convert
2556 * argv into UTF8 and pass them directly to main().
2558 int wmain(int argc
, const wchar_t **wargv
)
2560 int i
, maxlen
, exit_status
;
2561 char *buffer
, **save
;
2564 trace2_initialize_clock();
2568 _CrtSetReportMode(_CRT_ASSERT
, _CRTDBG_MODE_DEBUG
);
2571 #ifdef USE_MSVC_CRTDBG
2572 _CrtSetDbgFlag(_CRTDBG_ALLOC_MEM_DF
| _CRTDBG_LEAK_CHECK_DF
);
2576 maybe_redirect_std_handles();
2578 /* determine size of argv and environ conversion buffer */
2579 maxlen
= wcslen(wargv
[0]);
2580 for (i
= 1; i
< argc
; i
++)
2581 maxlen
= max(maxlen
, wcslen(wargv
[i
]));
2583 /* allocate buffer (wchar_t encodes to max 3 UTF-8 bytes) */
2584 maxlen
= 3 * maxlen
+ 1;
2585 buffer
= malloc_startup(maxlen
);
2588 * Create a UTF-8 version of w_argv. Also create a "save" copy
2589 * to remember all the string pointers because parse_options()
2590 * will remove claimed items from the argv that we pass down.
2592 ALLOC_ARRAY(argv
, argc
+ 1);
2593 ALLOC_ARRAY(save
, argc
+ 1);
2594 for (i
= 0; i
< argc
; i
++)
2595 argv
[i
] = save
[i
] = wcstoutfdup_startup(buffer
, wargv
[i
], maxlen
);
2596 argv
[i
] = save
[i
] = NULL
;
2599 /* fix Windows specific environment settings */
2600 setup_windows_environment();
2602 unset_environment_variables
= xstrdup("PERL5LIB");
2604 /* initialize critical section for waitpid pinfo_t list */
2605 InitializeCriticalSection(&pinfo_cs
);
2607 /* set up default file mode and file modes for stdin/out/err */
2609 _setmode(_fileno(stdin
), _O_BINARY
);
2610 _setmode(_fileno(stdout
), _O_BINARY
);
2611 _setmode(_fileno(stderr
), _O_BINARY
);
2613 /* initialize Unicode console */
2616 /* invoke the real main() using our utf8 version of argv. */
2617 exit_status
= main(argc
, argv
);
2619 for (i
= 0; i
< argc
; i
++)
2627 int uname(struct utsname
*buf
)
2629 unsigned v
= (unsigned)GetVersion();
2630 memset(buf
, 0, sizeof(*buf
));
2631 xsnprintf(buf
->sysname
, sizeof(buf
->sysname
), "Windows");
2632 xsnprintf(buf
->release
, sizeof(buf
->release
),
2633 "%u.%u", v
& 0xff, (v
>> 8) & 0xff);
2634 /* assuming NT variants only.. */
2635 xsnprintf(buf
->version
, sizeof(buf
->version
),
2636 "%u", (v
>> 16) & 0x7fff);