1 #include "../git-compat-util.h"
6 #include "../run-command.h"
8 #include "win32/lazyload.h"
11 #define HCAST(type, handle) ((type)(intptr_t)handle)
13 static const int delay
[] = { 0, 1, 10, 20, 40 };
15 int err_win_to_posix(DWORD winerr
)
19 case ERROR_ACCESS_DENIED
: error
= EACCES
; break;
20 case ERROR_ACCOUNT_DISABLED
: error
= EACCES
; break;
21 case ERROR_ACCOUNT_RESTRICTION
: error
= EACCES
; break;
22 case ERROR_ALREADY_ASSIGNED
: error
= EBUSY
; break;
23 case ERROR_ALREADY_EXISTS
: error
= EEXIST
; break;
24 case ERROR_ARITHMETIC_OVERFLOW
: error
= ERANGE
; break;
25 case ERROR_BAD_COMMAND
: error
= EIO
; break;
26 case ERROR_BAD_DEVICE
: error
= ENODEV
; break;
27 case ERROR_BAD_DRIVER_LEVEL
: error
= ENXIO
; break;
28 case ERROR_BAD_EXE_FORMAT
: error
= ENOEXEC
; break;
29 case ERROR_BAD_FORMAT
: error
= ENOEXEC
; break;
30 case ERROR_BAD_LENGTH
: error
= EINVAL
; break;
31 case ERROR_BAD_PATHNAME
: error
= ENOENT
; break;
32 case ERROR_BAD_PIPE
: error
= EPIPE
; break;
33 case ERROR_BAD_UNIT
: error
= ENODEV
; break;
34 case ERROR_BAD_USERNAME
: error
= EINVAL
; break;
35 case ERROR_BROKEN_PIPE
: error
= EPIPE
; break;
36 case ERROR_BUFFER_OVERFLOW
: error
= ENAMETOOLONG
; break;
37 case ERROR_BUSY
: error
= EBUSY
; break;
38 case ERROR_BUSY_DRIVE
: error
= EBUSY
; break;
39 case ERROR_CALL_NOT_IMPLEMENTED
: error
= ENOSYS
; break;
40 case ERROR_CANNOT_MAKE
: error
= EACCES
; break;
41 case ERROR_CANTOPEN
: error
= EIO
; break;
42 case ERROR_CANTREAD
: error
= EIO
; break;
43 case ERROR_CANTWRITE
: error
= EIO
; break;
44 case ERROR_CRC
: error
= EIO
; break;
45 case ERROR_CURRENT_DIRECTORY
: error
= EACCES
; break;
46 case ERROR_DEVICE_IN_USE
: error
= EBUSY
; break;
47 case ERROR_DEV_NOT_EXIST
: error
= ENODEV
; break;
48 case ERROR_DIRECTORY
: error
= EINVAL
; break;
49 case ERROR_DIR_NOT_EMPTY
: error
= ENOTEMPTY
; break;
50 case ERROR_DISK_CHANGE
: error
= EIO
; break;
51 case ERROR_DISK_FULL
: error
= ENOSPC
; break;
52 case ERROR_DRIVE_LOCKED
: error
= EBUSY
; break;
53 case ERROR_ENVVAR_NOT_FOUND
: error
= EINVAL
; break;
54 case ERROR_EXE_MARKED_INVALID
: error
= ENOEXEC
; break;
55 case ERROR_FILENAME_EXCED_RANGE
: error
= ENAMETOOLONG
; break;
56 case ERROR_FILE_EXISTS
: error
= EEXIST
; break;
57 case ERROR_FILE_INVALID
: error
= ENODEV
; break;
58 case ERROR_FILE_NOT_FOUND
: error
= ENOENT
; break;
59 case ERROR_GEN_FAILURE
: error
= EIO
; break;
60 case ERROR_HANDLE_DISK_FULL
: error
= ENOSPC
; break;
61 case ERROR_INSUFFICIENT_BUFFER
: error
= ENOMEM
; break;
62 case ERROR_INVALID_ACCESS
: error
= EACCES
; break;
63 case ERROR_INVALID_ADDRESS
: error
= EFAULT
; break;
64 case ERROR_INVALID_BLOCK
: error
= EFAULT
; break;
65 case ERROR_INVALID_DATA
: error
= EINVAL
; break;
66 case ERROR_INVALID_DRIVE
: error
= ENODEV
; break;
67 case ERROR_INVALID_EXE_SIGNATURE
: error
= ENOEXEC
; break;
68 case ERROR_INVALID_FLAGS
: error
= EINVAL
; break;
69 case ERROR_INVALID_FUNCTION
: error
= ENOSYS
; break;
70 case ERROR_INVALID_HANDLE
: error
= EBADF
; break;
71 case ERROR_INVALID_LOGON_HOURS
: error
= EACCES
; break;
72 case ERROR_INVALID_NAME
: error
= EINVAL
; break;
73 case ERROR_INVALID_OWNER
: error
= EINVAL
; break;
74 case ERROR_INVALID_PARAMETER
: error
= EINVAL
; break;
75 case ERROR_INVALID_PASSWORD
: error
= EPERM
; break;
76 case ERROR_INVALID_PRIMARY_GROUP
: error
= EINVAL
; break;
77 case ERROR_INVALID_SIGNAL_NUMBER
: error
= EINVAL
; break;
78 case ERROR_INVALID_TARGET_HANDLE
: error
= EIO
; break;
79 case ERROR_INVALID_WORKSTATION
: error
= EACCES
; break;
80 case ERROR_IO_DEVICE
: error
= EIO
; break;
81 case ERROR_IO_INCOMPLETE
: error
= EINTR
; break;
82 case ERROR_LOCKED
: error
= EBUSY
; break;
83 case ERROR_LOCK_VIOLATION
: error
= EACCES
; break;
84 case ERROR_LOGON_FAILURE
: error
= EACCES
; break;
85 case ERROR_MAPPED_ALIGNMENT
: error
= EINVAL
; break;
86 case ERROR_META_EXPANSION_TOO_LONG
: error
= E2BIG
; break;
87 case ERROR_MORE_DATA
: error
= EPIPE
; break;
88 case ERROR_NEGATIVE_SEEK
: error
= ESPIPE
; break;
89 case ERROR_NOACCESS
: error
= EFAULT
; break;
90 case ERROR_NONE_MAPPED
: error
= EINVAL
; break;
91 case ERROR_NOT_ENOUGH_MEMORY
: error
= ENOMEM
; break;
92 case ERROR_NOT_READY
: error
= EAGAIN
; break;
93 case ERROR_NOT_SAME_DEVICE
: error
= EXDEV
; break;
94 case ERROR_NO_DATA
: error
= EPIPE
; break;
95 case ERROR_NO_MORE_SEARCH_HANDLES
: error
= EIO
; break;
96 case ERROR_NO_PROC_SLOTS
: error
= EAGAIN
; break;
97 case ERROR_NO_SUCH_PRIVILEGE
: error
= EACCES
; break;
98 case ERROR_OPEN_FAILED
: error
= EIO
; break;
99 case ERROR_OPEN_FILES
: error
= EBUSY
; break;
100 case ERROR_OPERATION_ABORTED
: error
= EINTR
; break;
101 case ERROR_OUTOFMEMORY
: error
= ENOMEM
; break;
102 case ERROR_PASSWORD_EXPIRED
: error
= EACCES
; break;
103 case ERROR_PATH_BUSY
: error
= EBUSY
; break;
104 case ERROR_PATH_NOT_FOUND
: error
= ENOENT
; break;
105 case ERROR_PIPE_BUSY
: error
= EBUSY
; break;
106 case ERROR_PIPE_CONNECTED
: error
= EPIPE
; break;
107 case ERROR_PIPE_LISTENING
: error
= EPIPE
; break;
108 case ERROR_PIPE_NOT_CONNECTED
: error
= EPIPE
; break;
109 case ERROR_PRIVILEGE_NOT_HELD
: error
= EACCES
; break;
110 case ERROR_READ_FAULT
: error
= EIO
; break;
111 case ERROR_SEEK
: error
= EIO
; break;
112 case ERROR_SEEK_ON_DEVICE
: error
= ESPIPE
; break;
113 case ERROR_SHARING_BUFFER_EXCEEDED
: error
= ENFILE
; break;
114 case ERROR_SHARING_VIOLATION
: error
= EACCES
; break;
115 case ERROR_STACK_OVERFLOW
: error
= ENOMEM
; break;
116 case ERROR_SWAPERROR
: error
= ENOENT
; break;
117 case ERROR_TOO_MANY_MODULES
: error
= EMFILE
; break;
118 case ERROR_TOO_MANY_OPEN_FILES
: error
= EMFILE
; break;
119 case ERROR_UNRECOGNIZED_MEDIA
: error
= ENXIO
; break;
120 case ERROR_UNRECOGNIZED_VOLUME
: error
= ENODEV
; break;
121 case ERROR_WAIT_NO_CHILDREN
: error
= ECHILD
; break;
122 case ERROR_WRITE_FAULT
: error
= EIO
; break;
123 case ERROR_WRITE_PROTECT
: error
= EROFS
; break;
128 static inline int is_file_in_use_error(DWORD errcode
)
131 case ERROR_SHARING_VIOLATION
:
132 case ERROR_ACCESS_DENIED
:
139 static int read_yes_no_answer(void)
143 if (fgets(answer
, sizeof(answer
), stdin
)) {
144 size_t answer_len
= strlen(answer
);
145 int got_full_line
= 0, c
;
147 /* remove the newline */
148 if (answer_len
>= 2 && answer
[answer_len
-2] == '\r') {
149 answer
[answer_len
-2] = '\0';
151 } else if (answer_len
>= 1 && answer
[answer_len
-1] == '\n') {
152 answer
[answer_len
-1] = '\0';
155 /* flush the buffer in case we did not get the full line */
157 while ((c
= getchar()) != EOF
&& c
!= '\n')
160 /* we could not read, return the
161 * default answer which is no */
164 if (tolower(answer
[0]) == 'y' && !answer
[1])
166 if (!strncasecmp(answer
, "yes", sizeof(answer
)))
168 if (tolower(answer
[0]) == 'n' && !answer
[1])
170 if (!strncasecmp(answer
, "no", sizeof(answer
)))
173 /* did not find an answer we understand */
177 static int ask_yes_no_if_possible(const char *format
, ...)
180 const char *retry_hook
[] = { NULL
, NULL
, NULL
};
183 va_start(args
, format
);
184 vsnprintf(question
, sizeof(question
), format
, args
);
187 if ((retry_hook
[0] = mingw_getenv("GIT_ASK_YESNO"))) {
188 retry_hook
[1] = question
;
189 return !run_command_v_opt(retry_hook
, 0);
192 if (!isatty(_fileno(stdin
)) || !isatty(_fileno(stderr
)))
197 fprintf(stderr
, "%s (y/n) ", question
);
199 if ((answer
= read_yes_no_answer()) >= 0)
202 fprintf(stderr
, "Sorry, I did not understand your answer. "
203 "Please type 'y' or 'n'\n");
208 enum hide_dotfiles_type
{
209 HIDE_DOTFILES_FALSE
= 0,
211 HIDE_DOTFILES_DOTGITONLY
214 static enum hide_dotfiles_type hide_dotfiles
= HIDE_DOTFILES_DOTGITONLY
;
215 static char *unset_environment_variables
;
217 int mingw_core_config(const char *var
, const char *value
, void *cb
)
219 if (!strcmp(var
, "core.hidedotfiles")) {
220 if (value
&& !strcasecmp(value
, "dotgitonly"))
221 hide_dotfiles
= HIDE_DOTFILES_DOTGITONLY
;
223 hide_dotfiles
= git_config_bool(var
, value
);
227 if (!strcmp(var
, "core.unsetenvvars")) {
228 free(unset_environment_variables
);
229 unset_environment_variables
= xstrdup(value
);
236 /* Normalizes NT paths as returned by some low-level APIs. */
237 static wchar_t *normalize_ntpath(wchar_t *wbuf
)
240 /* fix absolute path prefixes */
241 if (wbuf
[0] == '\\') {
242 /* strip NT namespace prefixes */
243 if (!wcsncmp(wbuf
, L
"\\??\\", 4) ||
244 !wcsncmp(wbuf
, L
"\\\\?\\", 4))
246 else if (!wcsnicmp(wbuf
, L
"\\DosDevices\\", 12))
248 /* replace remaining '...UNC\' with '\\' */
249 if (!wcsnicmp(wbuf
, L
"UNC\\", 4)) {
254 /* convert backslashes to slashes */
255 for (i
= 0; wbuf
[i
]; i
++)
261 int mingw_unlink(const char *pathname
)
264 wchar_t wpathname
[MAX_PATH
];
265 if (xutftowcs_path(wpathname
, pathname
) < 0)
268 /* read-only files cannot be removed */
269 _wchmod(wpathname
, 0666);
270 while ((ret
= _wunlink(wpathname
)) == -1 && tries
< ARRAY_SIZE(delay
)) {
271 if (!is_file_in_use_error(GetLastError()))
274 * We assume that some other process had the source or
275 * destination file open at the wrong moment and retry.
276 * In order to give the other process a higher chance to
277 * complete its operation, we give up our time slice now.
278 * If we have to retry again, we do sleep a bit.
283 while (ret
== -1 && is_file_in_use_error(GetLastError()) &&
284 ask_yes_no_if_possible("Unlink of file '%s' failed. "
285 "Should I try again?", pathname
))
286 ret
= _wunlink(wpathname
);
290 static int is_dir_empty(const wchar_t *wpath
)
292 WIN32_FIND_DATAW findbuf
;
294 wchar_t wbuf
[MAX_PATH
+ 2];
296 wcscat(wbuf
, L
"\\*");
297 handle
= FindFirstFileW(wbuf
, &findbuf
);
298 if (handle
== INVALID_HANDLE_VALUE
)
299 return GetLastError() == ERROR_NO_MORE_FILES
;
301 while (!wcscmp(findbuf
.cFileName
, L
".") ||
302 !wcscmp(findbuf
.cFileName
, L
".."))
303 if (!FindNextFileW(handle
, &findbuf
)) {
304 DWORD err
= GetLastError();
306 return err
== ERROR_NO_MORE_FILES
;
312 int mingw_rmdir(const char *pathname
)
315 wchar_t wpathname
[MAX_PATH
];
316 if (xutftowcs_path(wpathname
, pathname
) < 0)
319 while ((ret
= _wrmdir(wpathname
)) == -1 && tries
< ARRAY_SIZE(delay
)) {
320 if (!is_file_in_use_error(GetLastError()))
321 errno
= err_win_to_posix(GetLastError());
324 if (!is_dir_empty(wpathname
)) {
329 * We assume that some other process had the source or
330 * destination file open at the wrong moment and retry.
331 * In order to give the other process a higher chance to
332 * complete its operation, we give up our time slice now.
333 * If we have to retry again, we do sleep a bit.
338 while (ret
== -1 && errno
== EACCES
&& is_file_in_use_error(GetLastError()) &&
339 ask_yes_no_if_possible("Deletion of directory '%s' failed. "
340 "Should I try again?", pathname
))
341 ret
= _wrmdir(wpathname
);
345 static inline int needs_hiding(const char *path
)
347 const char *basename
;
349 if (hide_dotfiles
== HIDE_DOTFILES_FALSE
)
352 /* We cannot use basename(), as it would remove trailing slashes */
353 mingw_skip_dos_drive_prefix((char **)&path
);
357 for (basename
= path
; *path
; path
++)
358 if (is_dir_sep(*path
)) {
361 } while (is_dir_sep(*path
));
362 /* ignore trailing slashes */
367 if (hide_dotfiles
== HIDE_DOTFILES_TRUE
)
368 return *basename
== '.';
370 assert(hide_dotfiles
== HIDE_DOTFILES_DOTGITONLY
);
371 return !strncasecmp(".git", basename
, 4) &&
372 (!basename
[4] || is_dir_sep(basename
[4]));
375 static int set_hidden_flag(const wchar_t *path
, int set
)
377 DWORD original
= GetFileAttributesW(path
), modified
;
379 modified
= original
| FILE_ATTRIBUTE_HIDDEN
;
381 modified
= original
& ~FILE_ATTRIBUTE_HIDDEN
;
382 if (original
== modified
|| SetFileAttributesW(path
, modified
))
384 errno
= err_win_to_posix(GetLastError());
388 int mingw_mkdir(const char *path
, int mode
)
391 wchar_t wpath
[MAX_PATH
];
393 if (!is_valid_win32_path(path
)) {
398 if (xutftowcs_path(wpath
, path
) < 0)
400 ret
= _wmkdir(wpath
);
401 if (!ret
&& needs_hiding(path
))
402 return set_hidden_flag(wpath
, 1);
407 * Calling CreateFile() using FILE_APPEND_DATA and without FILE_WRITE_DATA
408 * is documented in [1] as opening a writable file handle in append mode.
409 * (It is believed that) this is atomic since it is maintained by the
410 * kernel unlike the O_APPEND flag which is racily maintained by the CRT.
412 * [1] https://docs.microsoft.com/en-us/windows/desktop/fileio/file-access-rights-constants
414 * This trick does not appear to work for named pipes. Instead it creates
415 * a named pipe client handle that cannot be written to. Callers should
416 * just use the regular _wopen() for them. (And since client handle gets
417 * bound to a unique server handle, it isn't really an issue.)
419 static int mingw_open_append(wchar_t const *wfilename
, int oflags
, ...)
423 DWORD create
= (oflags
& O_CREAT
) ? OPEN_ALWAYS
: OPEN_EXISTING
;
425 /* only these flags are supported */
426 if ((oflags
& ~O_CREAT
) != (O_WRONLY
| O_APPEND
))
427 return errno
= ENOSYS
, -1;
430 * FILE_SHARE_WRITE is required to permit child processes
431 * to append to the file.
433 handle
= CreateFileW(wfilename
, FILE_APPEND_DATA
,
434 FILE_SHARE_WRITE
| FILE_SHARE_READ
,
435 NULL
, create
, FILE_ATTRIBUTE_NORMAL
, NULL
);
436 if (handle
== INVALID_HANDLE_VALUE
)
437 return errno
= err_win_to_posix(GetLastError()), -1;
440 * No O_APPEND here, because the CRT uses it only to reset the
441 * file pointer to EOF before each write(); but that is not
442 * necessary (and may lead to races) for a file created with
445 fd
= _open_osfhandle((intptr_t)handle
, O_BINARY
);
452 * Does the pathname map to the local named pipe filesystem?
453 * That is, does it have a "//./pipe/" prefix?
455 static int is_local_named_pipe_path(const char *filename
)
457 return (is_dir_sep(filename
[0]) &&
458 is_dir_sep(filename
[1]) &&
459 filename
[2] == '.' &&
460 is_dir_sep(filename
[3]) &&
461 !strncasecmp(filename
+4, "pipe", 4) &&
462 is_dir_sep(filename
[8]) &&
466 int mingw_open (const char *filename
, int oflags
, ...)
468 typedef int (*open_fn_t
)(wchar_t const *wfilename
, int oflags
, ...);
471 int fd
, create
= (oflags
& (O_CREAT
| O_EXCL
)) == (O_CREAT
| O_EXCL
);
472 wchar_t wfilename
[MAX_PATH
];
475 va_start(args
, oflags
);
476 mode
= va_arg(args
, int);
479 if (!is_valid_win32_path(filename
)) {
480 errno
= create
? EINVAL
: ENOENT
;
484 if (filename
&& !strcmp(filename
, "/dev/null"))
487 if ((oflags
& O_APPEND
) && !is_local_named_pipe_path(filename
))
488 open_fn
= mingw_open_append
;
492 if (xutftowcs_path(wfilename
, filename
) < 0)
494 fd
= open_fn(wfilename
, oflags
, mode
);
496 if (fd
< 0 && (oflags
& O_ACCMODE
) != O_RDONLY
&& errno
== EACCES
) {
497 DWORD attrs
= GetFileAttributesW(wfilename
);
498 if (attrs
!= INVALID_FILE_ATTRIBUTES
&& (attrs
& FILE_ATTRIBUTE_DIRECTORY
))
501 if ((oflags
& O_CREAT
) && needs_hiding(filename
)) {
503 * Internally, _wopen() uses the CreateFile() API which errors
504 * out with an ERROR_ACCESS_DENIED if CREATE_ALWAYS was
505 * specified and an already existing file's attributes do not
506 * match *exactly*. As there is no mode or flag we can set that
507 * would correspond to FILE_ATTRIBUTE_HIDDEN, let's just try
508 * again *without* the O_CREAT flag (that corresponds to the
509 * CREATE_ALWAYS flag of CreateFile()).
511 if (fd
< 0 && errno
== EACCES
)
512 fd
= open_fn(wfilename
, oflags
& ~O_CREAT
, mode
);
513 if (fd
>= 0 && set_hidden_flag(wfilename
, 1))
514 warning("could not mark '%s' as hidden.", filename
);
519 static BOOL WINAPI
ctrl_ignore(DWORD type
)
525 int mingw_fgetc(FILE *stream
)
528 if (!isatty(_fileno(stream
)))
529 return fgetc(stream
);
531 SetConsoleCtrlHandler(ctrl_ignore
, TRUE
);
534 if (ch
!= EOF
|| GetLastError() != ERROR_OPERATION_ABORTED
)
537 /* Ctrl+C was pressed, simulate SIGINT and retry */
540 SetConsoleCtrlHandler(ctrl_ignore
, FALSE
);
545 FILE *mingw_fopen (const char *filename
, const char *otype
)
547 int hide
= needs_hiding(filename
);
549 wchar_t wfilename
[MAX_PATH
], wotype
[4];
550 if (!is_valid_win32_path(filename
)) {
551 int create
= otype
&& strchr(otype
, 'w');
552 errno
= create
? EINVAL
: ENOENT
;
555 if (filename
&& !strcmp(filename
, "/dev/null"))
557 if (xutftowcs_path(wfilename
, filename
) < 0 ||
558 xutftowcs(wotype
, otype
, ARRAY_SIZE(wotype
)) < 0)
560 if (hide
&& !access(filename
, F_OK
) && set_hidden_flag(wfilename
, 0)) {
561 error("could not unhide %s", filename
);
564 file
= _wfopen(wfilename
, wotype
);
565 if (!file
&& GetLastError() == ERROR_INVALID_NAME
)
567 if (file
&& hide
&& set_hidden_flag(wfilename
, 1))
568 warning("could not mark '%s' as hidden.", filename
);
572 FILE *mingw_freopen (const char *filename
, const char *otype
, FILE *stream
)
574 int hide
= needs_hiding(filename
);
576 wchar_t wfilename
[MAX_PATH
], wotype
[4];
577 if (!is_valid_win32_path(filename
)) {
578 int create
= otype
&& strchr(otype
, 'w');
579 errno
= create
? EINVAL
: ENOENT
;
582 if (filename
&& !strcmp(filename
, "/dev/null"))
584 if (xutftowcs_path(wfilename
, filename
) < 0 ||
585 xutftowcs(wotype
, otype
, ARRAY_SIZE(wotype
)) < 0)
587 if (hide
&& !access(filename
, F_OK
) && set_hidden_flag(wfilename
, 0)) {
588 error("could not unhide %s", filename
);
591 file
= _wfreopen(wfilename
, wotype
, stream
);
592 if (file
&& hide
&& set_hidden_flag(wfilename
, 1))
593 warning("could not mark '%s' as hidden.", filename
);
598 int mingw_fflush(FILE *stream
)
600 int ret
= fflush(stream
);
603 * write() is used behind the scenes of stdio output functions.
604 * Since git code does not check for errors after each stdio write
605 * operation, it can happen that write() is called by a later
606 * stdio function even if an earlier write() call failed. In the
607 * case of a pipe whose readable end was closed, only the first
608 * call to write() reports EPIPE on Windows. Subsequent write()
609 * calls report EINVAL. It is impossible to notice whether this
610 * fflush invocation triggered such a case, therefore, we have to
611 * catch all EINVAL errors whole-sale.
613 if (ret
&& errno
== EINVAL
)
620 ssize_t
mingw_write(int fd
, const void *buf
, size_t len
)
622 ssize_t result
= write(fd
, buf
, len
);
624 if (result
< 0 && errno
== EINVAL
&& buf
) {
625 /* check if fd is a pipe */
626 HANDLE h
= (HANDLE
) _get_osfhandle(fd
);
627 if (GetFileType(h
) == FILE_TYPE_PIPE
)
636 int mingw_access(const char *filename
, int mode
)
638 wchar_t wfilename
[MAX_PATH
];
639 if (xutftowcs_path(wfilename
, filename
) < 0)
641 /* X_OK is not supported by the MSVCRT version */
642 return _waccess(wfilename
, mode
& ~X_OK
);
645 int mingw_chdir(const char *dirname
)
647 wchar_t wdirname
[MAX_PATH
];
648 if (xutftowcs_path(wdirname
, dirname
) < 0)
650 return _wchdir(wdirname
);
653 int mingw_chmod(const char *filename
, int mode
)
655 wchar_t wfilename
[MAX_PATH
];
656 if (xutftowcs_path(wfilename
, filename
) < 0)
658 return _wchmod(wfilename
, mode
);
662 * The unit of FILETIME is 100-nanoseconds since January 1, 1601, UTC.
663 * Returns the 100-nanoseconds ("hekto nanoseconds") since the epoch.
665 static inline long long filetime_to_hnsec(const FILETIME
*ft
)
667 long long winTime
= ((long long)ft
->dwHighDateTime
<< 32) + ft
->dwLowDateTime
;
668 /* Windows to Unix Epoch conversion */
669 return winTime
- 116444736000000000LL;
672 static inline void filetime_to_timespec(const FILETIME
*ft
, struct timespec
*ts
)
674 long long hnsec
= filetime_to_hnsec(ft
);
675 ts
->tv_sec
= (time_t)(hnsec
/ 10000000);
676 ts
->tv_nsec
= (hnsec
% 10000000) * 100;
680 * Verifies that safe_create_leading_directories() would succeed.
682 static int has_valid_directory_prefix(wchar_t *wfilename
)
684 int n
= wcslen(wfilename
);
687 wchar_t c
= wfilename
[--n
];
693 wfilename
[n
] = L
'\0';
694 attributes
= GetFileAttributesW(wfilename
);
696 if (attributes
== FILE_ATTRIBUTE_DIRECTORY
||
697 attributes
== FILE_ATTRIBUTE_DEVICE
)
699 if (attributes
== INVALID_FILE_ATTRIBUTES
)
700 switch (GetLastError()) {
701 case ERROR_PATH_NOT_FOUND
:
703 case ERROR_FILE_NOT_FOUND
:
704 /* This implies parent directory exists. */
712 /* We keep the do_lstat code in a separate function to avoid recursion.
713 * When a path ends with a slash, the stat will fail with ENOENT. In
714 * this case, we strip the trailing slashes and stat again.
716 * If follow is true then act like stat() and report on the link
717 * target. Otherwise report on the link itself.
719 static int do_lstat(int follow
, const char *file_name
, struct stat
*buf
)
721 WIN32_FILE_ATTRIBUTE_DATA fdata
;
722 wchar_t wfilename
[MAX_PATH
];
723 if (xutftowcs_path(wfilename
, file_name
) < 0)
726 if (GetFileAttributesExW(wfilename
, GetFileExInfoStandard
, &fdata
)) {
731 buf
->st_mode
= file_attr_to_st_mode(fdata
.dwFileAttributes
);
732 buf
->st_size
= fdata
.nFileSizeLow
|
733 (((off_t
)fdata
.nFileSizeHigh
)<<32);
734 buf
->st_dev
= buf
->st_rdev
= 0; /* not used by Git */
735 filetime_to_timespec(&(fdata
.ftLastAccessTime
), &(buf
->st_atim
));
736 filetime_to_timespec(&(fdata
.ftLastWriteTime
), &(buf
->st_mtim
));
737 filetime_to_timespec(&(fdata
.ftCreationTime
), &(buf
->st_ctim
));
738 if (fdata
.dwFileAttributes
& FILE_ATTRIBUTE_REPARSE_POINT
) {
739 WIN32_FIND_DATAW findbuf
;
740 HANDLE handle
= FindFirstFileW(wfilename
, &findbuf
);
741 if (handle
!= INVALID_HANDLE_VALUE
) {
742 if ((findbuf
.dwFileAttributes
& FILE_ATTRIBUTE_REPARSE_POINT
) &&
743 (findbuf
.dwReserved0
== IO_REPARSE_TAG_SYMLINK
)) {
745 char buffer
[MAXIMUM_REPARSE_DATA_BUFFER_SIZE
];
746 buf
->st_size
= readlink(file_name
, buffer
, MAXIMUM_REPARSE_DATA_BUFFER_SIZE
);
748 buf
->st_mode
= S_IFLNK
;
750 buf
->st_mode
|= S_IREAD
;
751 if (!(findbuf
.dwFileAttributes
& FILE_ATTRIBUTE_READONLY
))
752 buf
->st_mode
|= S_IWRITE
;
759 switch (GetLastError()) {
760 case ERROR_ACCESS_DENIED
:
761 case ERROR_SHARING_VIOLATION
:
762 case ERROR_LOCK_VIOLATION
:
763 case ERROR_SHARING_BUFFER_EXCEEDED
:
766 case ERROR_BUFFER_OVERFLOW
:
767 errno
= ENAMETOOLONG
;
769 case ERROR_NOT_ENOUGH_MEMORY
:
772 case ERROR_PATH_NOT_FOUND
:
773 if (!has_valid_directory_prefix(wfilename
)) {
785 /* We provide our own lstat/fstat functions, since the provided
786 * lstat/fstat functions are so slow. These stat functions are
787 * tailored for Git's usage (read: fast), and are not meant to be
788 * complete. Note that Git stat()s are redirected to mingw_lstat()
789 * too, since Windows doesn't really handle symlinks that well.
791 static int do_stat_internal(int follow
, const char *file_name
, struct stat
*buf
)
794 char alt_name
[PATH_MAX
];
796 if (!do_lstat(follow
, file_name
, buf
))
799 /* if file_name ended in a '/', Windows returned ENOENT;
800 * try again without trailing slashes
805 namelen
= strlen(file_name
);
806 if (namelen
&& file_name
[namelen
-1] != '/')
808 while (namelen
&& file_name
[namelen
-1] == '/')
810 if (!namelen
|| namelen
>= PATH_MAX
)
813 memcpy(alt_name
, file_name
, namelen
);
814 alt_name
[namelen
] = 0;
815 return do_lstat(follow
, alt_name
, buf
);
818 static int get_file_info_by_handle(HANDLE hnd
, struct stat
*buf
)
820 BY_HANDLE_FILE_INFORMATION fdata
;
822 if (!GetFileInformationByHandle(hnd
, &fdata
)) {
823 errno
= err_win_to_posix(GetLastError());
831 buf
->st_mode
= file_attr_to_st_mode(fdata
.dwFileAttributes
);
832 buf
->st_size
= fdata
.nFileSizeLow
|
833 (((off_t
)fdata
.nFileSizeHigh
)<<32);
834 buf
->st_dev
= buf
->st_rdev
= 0; /* not used by Git */
835 filetime_to_timespec(&(fdata
.ftLastAccessTime
), &(buf
->st_atim
));
836 filetime_to_timespec(&(fdata
.ftLastWriteTime
), &(buf
->st_mtim
));
837 filetime_to_timespec(&(fdata
.ftCreationTime
), &(buf
->st_ctim
));
841 int mingw_lstat(const char *file_name
, struct stat
*buf
)
843 return do_stat_internal(0, file_name
, buf
);
845 int mingw_stat(const char *file_name
, struct stat
*buf
)
847 return do_stat_internal(1, file_name
, buf
);
850 int mingw_fstat(int fd
, struct stat
*buf
)
852 HANDLE fh
= (HANDLE
)_get_osfhandle(fd
);
853 DWORD avail
, type
= GetFileType(fh
) & ~FILE_TYPE_REMOTE
;
857 return get_file_info_by_handle(fh
, buf
);
861 /* initialize stat fields */
862 memset(buf
, 0, sizeof(*buf
));
865 if (type
== FILE_TYPE_CHAR
) {
866 buf
->st_mode
= _S_IFCHR
;
868 buf
->st_mode
= _S_IFIFO
;
869 if (PeekNamedPipe(fh
, NULL
, 0, NULL
, &avail
, NULL
))
870 buf
->st_size
= avail
;
880 static inline void time_t_to_filetime(time_t t
, FILETIME
*ft
)
882 long long winTime
= t
* 10000000LL + 116444736000000000LL;
883 ft
->dwLowDateTime
= winTime
;
884 ft
->dwHighDateTime
= winTime
>> 32;
887 int mingw_utime (const char *file_name
, const struct utimbuf
*times
)
892 wchar_t wfilename
[MAX_PATH
];
893 if (xutftowcs_path(wfilename
, file_name
) < 0)
896 /* must have write permission */
897 attrs
= GetFileAttributesW(wfilename
);
898 if (attrs
!= INVALID_FILE_ATTRIBUTES
&&
899 (attrs
& FILE_ATTRIBUTE_READONLY
)) {
900 /* ignore errors here; open() will report them */
901 SetFileAttributesW(wfilename
, attrs
& ~FILE_ATTRIBUTE_READONLY
);
904 if ((fh
= _wopen(wfilename
, O_RDWR
| O_BINARY
)) < 0) {
910 time_t_to_filetime(times
->modtime
, &mft
);
911 time_t_to_filetime(times
->actime
, &aft
);
913 GetSystemTimeAsFileTime(&mft
);
916 if (!SetFileTime((HANDLE
)_get_osfhandle(fh
), NULL
, &aft
, &mft
)) {
924 if (attrs
!= INVALID_FILE_ATTRIBUTES
&&
925 (attrs
& FILE_ATTRIBUTE_READONLY
)) {
926 /* ignore errors again */
927 SetFileAttributesW(wfilename
, attrs
);
933 size_t mingw_strftime(char *s
, size_t max
,
934 const char *format
, const struct tm
*tm
)
936 size_t ret
= strftime(s
, max
, format
, tm
);
938 if (!ret
&& errno
== EINVAL
)
939 die("invalid strftime format: '%s'", format
);
943 unsigned int sleep (unsigned int seconds
)
949 char *mingw_mktemp(char *template)
951 wchar_t wtemplate
[MAX_PATH
];
952 if (xutftowcs_path(wtemplate
, template) < 0)
954 if (!_wmktemp(wtemplate
))
956 if (xwcstoutf(template, wtemplate
, strlen(template) + 1) < 0)
961 int mkstemp(char *template)
963 char *filename
= mktemp(template);
964 if (filename
== NULL
)
966 return open(filename
, O_RDWR
| O_CREAT
, 0600);
969 int gettimeofday(struct timeval
*tv
, void *tz
)
974 GetSystemTimeAsFileTime(&ft
);
975 hnsec
= filetime_to_hnsec(&ft
);
976 tv
->tv_sec
= hnsec
/ 10000000;
977 tv
->tv_usec
= (hnsec
% 10000000) / 10;
981 int pipe(int filedes
[2])
985 /* this creates non-inheritable handles */
986 if (!CreatePipe(&h
[0], &h
[1], NULL
, 8192)) {
987 errno
= err_win_to_posix(GetLastError());
990 filedes
[0] = _open_osfhandle(HCAST(int, h
[0]), O_NOINHERIT
);
991 if (filedes
[0] < 0) {
996 filedes
[1] = _open_osfhandle(HCAST(int, h
[1]), O_NOINHERIT
);
997 if (filedes
[1] < 0) {
1005 struct tm
*gmtime_r(const time_t *timep
, struct tm
*result
)
1007 /* gmtime() in MSVCRT.DLL is thread-safe, but not reentrant */
1008 memcpy(result
, gmtime(timep
), sizeof(struct tm
));
1012 struct tm
*localtime_r(const time_t *timep
, struct tm
*result
)
1014 /* localtime() in MSVCRT.DLL is thread-safe, but not reentrant */
1015 memcpy(result
, localtime(timep
), sizeof(struct tm
));
1019 char *mingw_getcwd(char *pointer
, int len
)
1021 wchar_t cwd
[MAX_PATH
], wpointer
[MAX_PATH
];
1022 DWORD ret
= GetCurrentDirectoryW(ARRAY_SIZE(cwd
), cwd
);
1024 if (!ret
|| ret
>= ARRAY_SIZE(cwd
)) {
1025 errno
= ret
? ENAMETOOLONG
: err_win_to_posix(GetLastError());
1028 ret
= GetLongPathNameW(cwd
, wpointer
, ARRAY_SIZE(wpointer
));
1029 if (!ret
&& GetLastError() == ERROR_ACCESS_DENIED
) {
1030 HANDLE hnd
= CreateFileW(cwd
, 0,
1031 FILE_SHARE_READ
| FILE_SHARE_WRITE
| FILE_SHARE_DELETE
, NULL
,
1032 OPEN_EXISTING
, FILE_FLAG_BACKUP_SEMANTICS
, NULL
);
1033 if (hnd
== INVALID_HANDLE_VALUE
)
1035 ret
= GetFinalPathNameByHandleW(hnd
, wpointer
, ARRAY_SIZE(wpointer
), 0);
1037 if (!ret
|| ret
>= ARRAY_SIZE(wpointer
))
1039 if (xwcstoutf(pointer
, normalize_ntpath(wpointer
), len
) < 0)
1043 if (!ret
|| ret
>= ARRAY_SIZE(wpointer
))
1045 if (xwcstoutf(pointer
, wpointer
, len
) < 0)
1047 convert_slashes(pointer
);
1052 * See "Parsing C++ Command-Line Arguments" at Microsoft's Docs:
1053 * https://docs.microsoft.com/en-us/cpp/cpp/parsing-cpp-command-line-arguments
1055 static const char *quote_arg(const char *arg
)
1057 /* count chars to quote */
1059 int force_quotes
= 0;
1061 const char *p
= arg
;
1062 if (!*p
) force_quotes
= 1;
1064 if (isspace(*p
) || *p
== '*' || *p
== '?' || *p
== '{' || *p
== '\'')
1068 else if (*p
== '\\') {
1070 while (*p
== '\\') {
1075 if (*p
== '"' || !*p
)
1082 if (!force_quotes
&& n
== 0)
1085 /* insert \ where necessary */
1086 d
= q
= xmalloc(st_add3(len
, n
, 3));
1091 else if (*arg
== '\\') {
1093 while (*arg
== '\\') {
1097 if (*arg
== '"' || !*arg
) {
1100 /* don't escape the surrounding end quote */
1113 static const char *parse_interpreter(const char *cmd
)
1115 static char buf
[100];
1119 /* don't even try a .exe */
1121 if (n
>= 4 && !strcasecmp(cmd
+n
-4, ".exe"))
1124 fd
= open(cmd
, O_RDONLY
);
1127 n
= read(fd
, buf
, sizeof(buf
)-1);
1129 if (n
< 4) /* at least '#!/x' and not error */
1132 if (buf
[0] != '#' || buf
[1] != '!')
1135 p
= buf
+ strcspn(buf
, "\r\n");
1140 if (!(p
= strrchr(buf
+2, '/')) && !(p
= strrchr(buf
+2, '\\')))
1143 if ((opt
= strchr(p
+1, ' ')))
1149 * exe_only means that we only want to detect .exe files, but not scripts
1150 * (which do not have an extension)
1152 static char *lookup_prog(const char *dir
, int dirlen
, const char *cmd
,
1153 int isexe
, int exe_only
)
1155 char path
[MAX_PATH
];
1156 snprintf(path
, sizeof(path
), "%.*s\\%s.exe", dirlen
, dir
, cmd
);
1158 if (!isexe
&& access(path
, F_OK
) == 0)
1159 return xstrdup(path
);
1160 path
[strlen(path
)-4] = '\0';
1161 if ((!exe_only
|| isexe
) && access(path
, F_OK
) == 0)
1162 if (!(GetFileAttributes(path
) & FILE_ATTRIBUTE_DIRECTORY
))
1163 return xstrdup(path
);
1168 * Determines the absolute path of cmd using the split path in path.
1169 * If cmd contains a slash or backslash, no lookup is performed.
1171 static char *path_lookup(const char *cmd
, int exe_only
)
1175 int len
= strlen(cmd
);
1176 int isexe
= len
>= 4 && !strcasecmp(cmd
+len
-4, ".exe");
1178 if (strchr(cmd
, '/') || strchr(cmd
, '\\'))
1179 return xstrdup(cmd
);
1181 path
= mingw_getenv("PATH");
1186 const char *sep
= strchrnul(path
, ';');
1187 int dirlen
= sep
- path
;
1189 prog
= lookup_prog(path
, dirlen
, cmd
, isexe
, exe_only
);
1198 static const wchar_t *wcschrnul(const wchar_t *s
, wchar_t c
)
1200 while (*s
&& *s
!= c
)
1205 /* Compare only keys */
1206 static int wenvcmp(const void *a
, const void *b
)
1208 wchar_t *p
= *(wchar_t **)a
, *q
= *(wchar_t **)b
;
1209 size_t p_len
, q_len
;
1212 p_len
= wcschrnul(p
, L
'=') - p
;
1213 q_len
= wcschrnul(q
, L
'=') - q
;
1215 /* If the length differs, include the shorter key's NUL */
1218 else if (p_len
> q_len
)
1221 return _wcsnicmp(p
, q
, p_len
);
1224 /* We need a stable sort to convert the environment between UTF-16 <-> UTF-8 */
1225 #ifndef INTERNAL_QSORT
1230 * Build an environment block combining the inherited environment
1231 * merged with the given list of settings.
1233 * Values of the form "KEY=VALUE" in deltaenv override inherited values.
1234 * Values of the form "KEY" in deltaenv delete inherited values.
1236 * Multiple entries in deltaenv for the same key are explicitly allowed.
1238 * We return a contiguous block of UNICODE strings with a final trailing
1241 static wchar_t *make_environment_block(char **deltaenv
)
1243 wchar_t *wenv
= GetEnvironmentStringsW(), *wdeltaenv
, *result
, *p
;
1244 size_t wlen
, s
, delta_size
, size
;
1246 wchar_t **array
= NULL
;
1247 size_t alloc
= 0, nr
= 0, i
;
1249 size
= 1; /* for extra NUL at the end */
1251 /* If there is no deltaenv to apply, simply return a copy. */
1252 if (!deltaenv
|| !*deltaenv
) {
1253 for (p
= wenv
; p
&& *p
; ) {
1254 size_t s
= wcslen(p
) + 1;
1259 ALLOC_ARRAY(result
, size
);
1260 memcpy(result
, wenv
, size
* sizeof(*wenv
));
1261 FreeEnvironmentStringsW(wenv
);
1266 * If there is a deltaenv, let's accumulate all keys into `array`,
1267 * sort them using the stable git_qsort() and then copy, skipping
1270 for (p
= wenv
; p
&& *p
; ) {
1271 ALLOC_GROW(array
, nr
+ 1, alloc
);
1278 /* (over-)assess size needed for wchar version of deltaenv */
1279 for (delta_size
= 0, i
= 0; deltaenv
[i
]; i
++)
1280 delta_size
+= strlen(deltaenv
[i
]) * 2 + 1;
1281 ALLOC_ARRAY(wdeltaenv
, delta_size
);
1283 /* convert the deltaenv, appending to array */
1284 for (i
= 0, p
= wdeltaenv
; deltaenv
[i
]; i
++) {
1285 ALLOC_GROW(array
, nr
+ 1, alloc
);
1286 wlen
= xutftowcs(p
, deltaenv
[i
], wdeltaenv
+ delta_size
- p
);
1291 git_qsort(array
, nr
, sizeof(*array
), wenvcmp
);
1292 ALLOC_ARRAY(result
, size
+ delta_size
);
1294 for (p
= result
, i
= 0; i
< nr
; i
++) {
1295 /* Skip any duplicate keys; last one wins */
1296 while (i
+ 1 < nr
&& !wenvcmp(array
+ i
, array
+ i
+ 1))
1299 /* Skip "to delete" entry */
1300 if (!wcschr(array
[i
], L
'='))
1303 size
= wcslen(array
[i
]) + 1;
1304 memcpy(p
, array
[i
], size
* sizeof(*p
));
1311 FreeEnvironmentStringsW(wenv
);
1315 static void do_unset_environment_variables(void)
1318 char *p
= unset_environment_variables
;
1325 char *comma
= strchr(p
, ',');
1337 struct pinfo_t
*next
;
1341 static struct pinfo_t
*pinfo
= NULL
;
1342 CRITICAL_SECTION pinfo_cs
;
1344 static pid_t
mingw_spawnve_fd(const char *cmd
, const char **argv
, char **deltaenv
,
1346 int prepend_cmd
, int fhin
, int fhout
, int fherr
)
1349 PROCESS_INFORMATION pi
;
1351 wchar_t wcmd
[MAX_PATH
], wdir
[MAX_PATH
], *wargs
, *wenvblk
= NULL
;
1352 unsigned flags
= CREATE_UNICODE_ENVIRONMENT
;
1356 do_unset_environment_variables();
1358 /* Determine whether or not we are associated to a console */
1359 cons
= CreateFile("CONOUT$", GENERIC_WRITE
,
1360 FILE_SHARE_WRITE
, NULL
, OPEN_EXISTING
,
1361 FILE_ATTRIBUTE_NORMAL
, NULL
);
1362 if (cons
== INVALID_HANDLE_VALUE
) {
1363 /* There is no console associated with this process.
1364 * Since the child is a console process, Windows
1365 * would normally create a console window. But
1366 * since we'll be redirecting std streams, we do
1367 * not need the console.
1368 * It is necessary to use DETACHED_PROCESS
1369 * instead of CREATE_NO_WINDOW to make ssh
1370 * recognize that it has no console.
1372 flags
|= DETACHED_PROCESS
;
1374 /* There is already a console. If we specified
1375 * DETACHED_PROCESS here, too, Windows would
1376 * disassociate the child from the console.
1377 * The same is true for CREATE_NO_WINDOW.
1382 memset(&si
, 0, sizeof(si
));
1384 si
.dwFlags
= STARTF_USESTDHANDLES
;
1385 si
.hStdInput
= winansi_get_osfhandle(fhin
);
1386 si
.hStdOutput
= winansi_get_osfhandle(fhout
);
1387 si
.hStdError
= winansi_get_osfhandle(fherr
);
1389 if (xutftowcs_path(wcmd
, cmd
) < 0)
1391 if (dir
&& xutftowcs_path(wdir
, dir
) < 0)
1394 /* concatenate argv, quoting args as we go */
1395 strbuf_init(&args
, 0);
1397 char *quoted
= (char *)quote_arg(cmd
);
1398 strbuf_addstr(&args
, quoted
);
1402 for (; *argv
; argv
++) {
1403 char *quoted
= (char *)quote_arg(*argv
);
1405 strbuf_addch(&args
, ' ');
1406 strbuf_addstr(&args
, quoted
);
1407 if (quoted
!= *argv
)
1411 ALLOC_ARRAY(wargs
, st_add(st_mult(2, args
.len
), 1));
1412 xutftowcs(wargs
, args
.buf
, 2 * args
.len
+ 1);
1413 strbuf_release(&args
);
1415 wenvblk
= make_environment_block(deltaenv
);
1417 memset(&pi
, 0, sizeof(pi
));
1418 ret
= CreateProcessW(wcmd
, wargs
, NULL
, NULL
, TRUE
, flags
,
1419 wenvblk
, dir
? wdir
: NULL
, &si
, &pi
);
1428 CloseHandle(pi
.hThread
);
1431 * The process ID is the human-readable identifier of the process
1432 * that we want to present in log and error messages. The handle
1433 * is not useful for this purpose. But we cannot close it, either,
1434 * because it is not possible to turn a process ID into a process
1435 * handle after the process terminated.
1436 * Keep the handle in a list for waitpid.
1438 EnterCriticalSection(&pinfo_cs
);
1440 struct pinfo_t
*info
= xmalloc(sizeof(struct pinfo_t
));
1441 info
->pid
= pi
.dwProcessId
;
1442 info
->proc
= pi
.hProcess
;
1446 LeaveCriticalSection(&pinfo_cs
);
1448 return (pid_t
)pi
.dwProcessId
;
1451 static pid_t
mingw_spawnv(const char *cmd
, const char **argv
, int prepend_cmd
)
1453 return mingw_spawnve_fd(cmd
, argv
, NULL
, NULL
, prepend_cmd
, 0, 1, 2);
1456 pid_t
mingw_spawnvpe(const char *cmd
, const char **argv
, char **deltaenv
,
1458 int fhin
, int fhout
, int fherr
)
1461 char *prog
= path_lookup(cmd
, 0);
1468 const char *interpr
= parse_interpreter(prog
);
1471 const char *argv0
= argv
[0];
1472 char *iprog
= path_lookup(interpr
, 1);
1479 pid
= mingw_spawnve_fd(iprog
, argv
, deltaenv
, dir
, 1,
1480 fhin
, fhout
, fherr
);
1486 pid
= mingw_spawnve_fd(prog
, argv
, deltaenv
, dir
, 0,
1487 fhin
, fhout
, fherr
);
1493 static int try_shell_exec(const char *cmd
, char *const *argv
)
1495 const char *interpr
= parse_interpreter(cmd
);
1501 prog
= path_lookup(interpr
, 1);
1505 while (argv
[argc
]) argc
++;
1506 ALLOC_ARRAY(argv2
, argc
+ 1);
1507 argv2
[0] = (char *)cmd
; /* full path to the script file */
1508 memcpy(&argv2
[1], &argv
[1], sizeof(*argv
) * argc
);
1509 pid
= mingw_spawnv(prog
, argv2
, 1);
1512 if (waitpid(pid
, &status
, 0) < 0)
1516 pid
= 1; /* indicate that we tried but failed */
1523 int mingw_execv(const char *cmd
, char *const *argv
)
1525 /* check if git_command is a shell script */
1526 if (!try_shell_exec(cmd
, argv
)) {
1529 pid
= mingw_spawnv(cmd
, (const char **)argv
, 0);
1532 if (waitpid(pid
, &status
, 0) < 0)
1539 int mingw_execvp(const char *cmd
, char *const *argv
)
1541 char *prog
= path_lookup(cmd
, 0);
1544 mingw_execv(prog
, argv
);
1552 int mingw_kill(pid_t pid
, int sig
)
1554 if (pid
> 0 && sig
== SIGTERM
) {
1555 HANDLE h
= OpenProcess(PROCESS_TERMINATE
, FALSE
, pid
);
1557 if (TerminateProcess(h
, -1)) {
1562 errno
= err_win_to_posix(GetLastError());
1565 } else if (pid
> 0 && sig
== 0) {
1566 HANDLE h
= OpenProcess(PROCESS_QUERY_INFORMATION
, FALSE
, pid
);
1578 * UTF-8 versions of getenv(), putenv() and unsetenv().
1579 * Internally, they use the CRT's stock UNICODE routines
1580 * to avoid data loss.
1582 char *mingw_getenv(const char *name
)
1584 #define GETENV_MAX_RETAIN 30
1585 static char *values
[GETENV_MAX_RETAIN
];
1586 static int value_counter
;
1587 int len_key
, len_value
;
1590 wchar_t w_value
[32768];
1592 if (!name
|| !*name
)
1595 len_key
= strlen(name
) + 1;
1596 /* We cannot use xcalloc() here because that uses getenv() itself */
1597 w_key
= calloc(len_key
, sizeof(wchar_t));
1599 die("Out of memory, (tried to allocate %u wchar_t's)", len_key
);
1600 xutftowcs(w_key
, name
, len_key
);
1601 len_value
= GetEnvironmentVariableW(w_key
, w_value
, ARRAY_SIZE(w_value
));
1602 if (!len_value
&& GetLastError() == ERROR_ENVVAR_NOT_FOUND
) {
1608 len_value
= len_value
* 3 + 1;
1609 /* We cannot use xcalloc() here because that uses getenv() itself */
1610 value
= calloc(len_value
, sizeof(char));
1612 die("Out of memory, (tried to allocate %u bytes)", len_value
);
1613 xwcstoutf(value
, w_value
, len_value
);
1616 * We return `value` which is an allocated value and the caller is NOT
1617 * expecting to have to free it, so we keep a round-robin array,
1618 * invalidating the buffer after GETENV_MAX_RETAIN getenv() calls.
1620 free(values
[value_counter
]);
1621 values
[value_counter
++] = value
;
1622 if (value_counter
>= ARRAY_SIZE(values
))
1628 int mingw_putenv(const char *namevalue
)
1631 wchar_t *wide
, *equal
;
1634 if (!namevalue
|| !*namevalue
)
1637 size
= strlen(namevalue
) * 2 + 1;
1638 wide
= calloc(size
, sizeof(wchar_t));
1640 die("Out of memory, (tried to allocate %u wchar_t's)", size
);
1641 xutftowcs(wide
, namevalue
, size
);
1642 equal
= wcschr(wide
, L
'=');
1644 result
= SetEnvironmentVariableW(wide
, NULL
);
1647 result
= SetEnvironmentVariableW(wide
, equal
+ 1);
1652 errno
= err_win_to_posix(GetLastError());
1654 return result
? 0 : -1;
1658 * Note, this isn't a complete replacement for getaddrinfo. It assumes
1659 * that service contains a numerical port, or that it is null. It
1660 * does a simple search using gethostbyname, and returns one IPv4 host
1663 static int WSAAPI
getaddrinfo_stub(const char *node
, const char *service
,
1664 const struct addrinfo
*hints
,
1665 struct addrinfo
**res
)
1667 struct hostent
*h
= NULL
;
1668 struct addrinfo
*ai
;
1669 struct sockaddr_in
*sin
;
1672 h
= gethostbyname(node
);
1674 return WSAGetLastError();
1677 ai
= xmalloc(sizeof(struct addrinfo
));
1680 ai
->ai_family
= AF_INET
;
1681 ai
->ai_socktype
= hints
? hints
->ai_socktype
: 0;
1682 switch (ai
->ai_socktype
) {
1684 ai
->ai_protocol
= IPPROTO_TCP
;
1687 ai
->ai_protocol
= IPPROTO_UDP
;
1690 ai
->ai_protocol
= 0;
1693 ai
->ai_addrlen
= sizeof(struct sockaddr_in
);
1694 if (hints
&& (hints
->ai_flags
& AI_CANONNAME
))
1695 ai
->ai_canonname
= h
? xstrdup(h
->h_name
) : NULL
;
1697 ai
->ai_canonname
= NULL
;
1699 sin
= xcalloc(1, ai
->ai_addrlen
);
1700 sin
->sin_family
= AF_INET
;
1701 /* Note: getaddrinfo is supposed to allow service to be a string,
1702 * which should be looked up using getservbyname. This is
1703 * currently not implemented */
1705 sin
->sin_port
= htons(atoi(service
));
1707 sin
->sin_addr
= *(struct in_addr
*)h
->h_addr
;
1708 else if (hints
&& (hints
->ai_flags
& AI_PASSIVE
))
1709 sin
->sin_addr
.s_addr
= INADDR_ANY
;
1711 sin
->sin_addr
.s_addr
= INADDR_LOOPBACK
;
1712 ai
->ai_addr
= (struct sockaddr
*)sin
;
1717 static void WSAAPI
freeaddrinfo_stub(struct addrinfo
*res
)
1719 free(res
->ai_canonname
);
1724 static int WSAAPI
getnameinfo_stub(const struct sockaddr
*sa
, socklen_t salen
,
1725 char *host
, DWORD hostlen
,
1726 char *serv
, DWORD servlen
, int flags
)
1728 const struct sockaddr_in
*sin
= (const struct sockaddr_in
*)sa
;
1729 if (sa
->sa_family
!= AF_INET
)
1734 if (host
&& hostlen
> 0) {
1735 struct hostent
*ent
= NULL
;
1736 if (!(flags
& NI_NUMERICHOST
))
1737 ent
= gethostbyaddr((const char *)&sin
->sin_addr
,
1738 sizeof(sin
->sin_addr
), AF_INET
);
1741 snprintf(host
, hostlen
, "%s", ent
->h_name
);
1742 else if (flags
& NI_NAMEREQD
)
1745 snprintf(host
, hostlen
, "%s", inet_ntoa(sin
->sin_addr
));
1748 if (serv
&& servlen
> 0) {
1749 struct servent
*ent
= NULL
;
1750 if (!(flags
& NI_NUMERICSERV
))
1751 ent
= getservbyport(sin
->sin_port
,
1752 flags
& NI_DGRAM
? "udp" : "tcp");
1755 snprintf(serv
, servlen
, "%s", ent
->s_name
);
1757 snprintf(serv
, servlen
, "%d", ntohs(sin
->sin_port
));
1763 static HMODULE ipv6_dll
= NULL
;
1764 static void (WSAAPI
*ipv6_freeaddrinfo
)(struct addrinfo
*res
);
1765 static int (WSAAPI
*ipv6_getaddrinfo
)(const char *node
, const char *service
,
1766 const struct addrinfo
*hints
,
1767 struct addrinfo
**res
);
1768 static int (WSAAPI
*ipv6_getnameinfo
)(const struct sockaddr
*sa
, socklen_t salen
,
1769 char *host
, DWORD hostlen
,
1770 char *serv
, DWORD servlen
, int flags
);
1772 * gai_strerror is an inline function in the ws2tcpip.h header, so we
1773 * don't need to try to load that one dynamically.
1776 static void socket_cleanup(void)
1780 FreeLibrary(ipv6_dll
);
1782 ipv6_freeaddrinfo
= freeaddrinfo_stub
;
1783 ipv6_getaddrinfo
= getaddrinfo_stub
;
1784 ipv6_getnameinfo
= getnameinfo_stub
;
1787 static void ensure_socket_initialization(void)
1790 static int initialized
= 0;
1791 const char *libraries
[] = { "ws2_32.dll", "wship6.dll", NULL
};
1797 if (WSAStartup(MAKEWORD(2,2), &wsa
))
1798 die("unable to initialize winsock subsystem, error %d",
1801 for (name
= libraries
; *name
; name
++) {
1802 ipv6_dll
= LoadLibraryExA(*name
, NULL
,
1803 LOAD_LIBRARY_SEARCH_SYSTEM32
);
1807 ipv6_freeaddrinfo
= (void (WSAAPI
*)(struct addrinfo
*))
1808 GetProcAddress(ipv6_dll
, "freeaddrinfo");
1809 ipv6_getaddrinfo
= (int (WSAAPI
*)(const char *, const char *,
1810 const struct addrinfo
*,
1811 struct addrinfo
**))
1812 GetProcAddress(ipv6_dll
, "getaddrinfo");
1813 ipv6_getnameinfo
= (int (WSAAPI
*)(const struct sockaddr
*,
1814 socklen_t
, char *, DWORD
,
1815 char *, DWORD
, int))
1816 GetProcAddress(ipv6_dll
, "getnameinfo");
1817 if (!ipv6_freeaddrinfo
|| !ipv6_getaddrinfo
|| !ipv6_getnameinfo
) {
1818 FreeLibrary(ipv6_dll
);
1823 if (!ipv6_freeaddrinfo
|| !ipv6_getaddrinfo
|| !ipv6_getnameinfo
) {
1824 ipv6_freeaddrinfo
= freeaddrinfo_stub
;
1825 ipv6_getaddrinfo
= getaddrinfo_stub
;
1826 ipv6_getnameinfo
= getnameinfo_stub
;
1829 atexit(socket_cleanup
);
1834 int mingw_gethostname(char *name
, int namelen
)
1836 ensure_socket_initialization();
1837 return gethostname(name
, namelen
);
1840 #undef gethostbyname
1841 struct hostent
*mingw_gethostbyname(const char *host
)
1843 ensure_socket_initialization();
1844 return gethostbyname(host
);
1847 void mingw_freeaddrinfo(struct addrinfo
*res
)
1849 ipv6_freeaddrinfo(res
);
1852 int mingw_getaddrinfo(const char *node
, const char *service
,
1853 const struct addrinfo
*hints
, struct addrinfo
**res
)
1855 ensure_socket_initialization();
1856 return ipv6_getaddrinfo(node
, service
, hints
, res
);
1859 int mingw_getnameinfo(const struct sockaddr
*sa
, socklen_t salen
,
1860 char *host
, DWORD hostlen
, char *serv
, DWORD servlen
,
1863 ensure_socket_initialization();
1864 return ipv6_getnameinfo(sa
, salen
, host
, hostlen
, serv
, servlen
, flags
);
1867 int mingw_socket(int domain
, int type
, int protocol
)
1872 ensure_socket_initialization();
1873 s
= WSASocket(domain
, type
, protocol
, NULL
, 0, 0);
1874 if (s
== INVALID_SOCKET
) {
1876 * WSAGetLastError() values are regular BSD error codes
1877 * biased by WSABASEERR.
1878 * However, strerror() does not know about networking
1879 * specific errors, which are values beginning at 38 or so.
1880 * Therefore, we choose to leave the biased error code
1881 * in errno so that _if_ someone looks up the code somewhere,
1882 * then it is at least the number that are usually listed.
1884 errno
= WSAGetLastError();
1887 /* convert into a file descriptor */
1888 if ((sockfd
= _open_osfhandle(s
, O_RDWR
|O_BINARY
)) < 0) {
1890 return error("unable to make a socket file descriptor: %s",
1897 int mingw_connect(int sockfd
, struct sockaddr
*sa
, size_t sz
)
1899 SOCKET s
= (SOCKET
)_get_osfhandle(sockfd
);
1900 return connect(s
, sa
, sz
);
1904 int mingw_bind(int sockfd
, struct sockaddr
*sa
, size_t sz
)
1906 SOCKET s
= (SOCKET
)_get_osfhandle(sockfd
);
1907 return bind(s
, sa
, sz
);
1911 int mingw_setsockopt(int sockfd
, int lvl
, int optname
, void *optval
, int optlen
)
1913 SOCKET s
= (SOCKET
)_get_osfhandle(sockfd
);
1914 return setsockopt(s
, lvl
, optname
, (const char*)optval
, optlen
);
1918 int mingw_shutdown(int sockfd
, int how
)
1920 SOCKET s
= (SOCKET
)_get_osfhandle(sockfd
);
1921 return shutdown(s
, how
);
1925 int mingw_listen(int sockfd
, int backlog
)
1927 SOCKET s
= (SOCKET
)_get_osfhandle(sockfd
);
1928 return listen(s
, backlog
);
1932 int mingw_accept(int sockfd1
, struct sockaddr
*sa
, socklen_t
*sz
)
1936 SOCKET s1
= (SOCKET
)_get_osfhandle(sockfd1
);
1937 SOCKET s2
= accept(s1
, sa
, sz
);
1939 /* convert into a file descriptor */
1940 if ((sockfd2
= _open_osfhandle(s2
, O_RDWR
|O_BINARY
)) < 0) {
1943 return error("unable to make a socket file descriptor: %s",
1950 int mingw_rename(const char *pold
, const char *pnew
)
1954 wchar_t wpold
[MAX_PATH
], wpnew
[MAX_PATH
];
1955 if (xutftowcs_path(wpold
, pold
) < 0 || xutftowcs_path(wpnew
, pnew
) < 0)
1959 * Try native rename() first to get errno right.
1960 * It is based on MoveFile(), which cannot overwrite existing files.
1962 if (!_wrename(wpold
, wpnew
))
1964 if (errno
!= EEXIST
)
1967 if (MoveFileExW(wpold
, wpnew
, MOVEFILE_REPLACE_EXISTING
))
1969 /* TODO: translate more errors */
1970 gle
= GetLastError();
1971 if (gle
== ERROR_ACCESS_DENIED
&&
1972 (attrs
= GetFileAttributesW(wpnew
)) != INVALID_FILE_ATTRIBUTES
) {
1973 if (attrs
& FILE_ATTRIBUTE_DIRECTORY
) {
1974 DWORD attrsold
= GetFileAttributesW(wpold
);
1975 if (attrsold
== INVALID_FILE_ATTRIBUTES
||
1976 !(attrsold
& FILE_ATTRIBUTE_DIRECTORY
))
1978 else if (!_wrmdir(wpnew
))
1982 if ((attrs
& FILE_ATTRIBUTE_READONLY
) &&
1983 SetFileAttributesW(wpnew
, attrs
& ~FILE_ATTRIBUTE_READONLY
)) {
1984 if (MoveFileExW(wpold
, wpnew
, MOVEFILE_REPLACE_EXISTING
))
1986 gle
= GetLastError();
1987 /* revert file attributes on failure */
1988 SetFileAttributesW(wpnew
, attrs
);
1991 if (tries
< ARRAY_SIZE(delay
) && gle
== ERROR_ACCESS_DENIED
) {
1993 * We assume that some other process had the source or
1994 * destination file open at the wrong moment and retry.
1995 * In order to give the other process a higher chance to
1996 * complete its operation, we give up our time slice now.
1997 * If we have to retry again, we do sleep a bit.
1999 Sleep(delay
[tries
]);
2003 if (gle
== ERROR_ACCESS_DENIED
&&
2004 ask_yes_no_if_possible("Rename from '%s' to '%s' failed. "
2005 "Should I try again?", pold
, pnew
))
2013 * Note that this doesn't return the actual pagesize, but
2014 * the allocation granularity. If future Windows specific git code
2015 * needs the real getpagesize function, we need to find another solution.
2017 int mingw_getpagesize(void)
2021 return si
.dwAllocationGranularity
;
2024 /* See https://msdn.microsoft.com/en-us/library/windows/desktop/ms724435.aspx */
2025 enum EXTENDED_NAME_FORMAT
{
2027 NameUserPrincipal
= 8
2030 static char *get_extended_user_info(enum EXTENDED_NAME_FORMAT type
)
2032 DECLARE_PROC_ADDR(secur32
.dll
, BOOL
, GetUserNameExW
,
2033 enum EXTENDED_NAME_FORMAT
, LPCWSTR
, PULONG
);
2034 static wchar_t wbuffer
[1024];
2037 if (!INIT_PROC_ADDR(GetUserNameExW
))
2040 len
= ARRAY_SIZE(wbuffer
);
2041 if (GetUserNameExW(type
, wbuffer
, &len
)) {
2042 char *converted
= xmalloc((len
*= 3));
2043 if (xwcstoutf(converted
, wbuffer
, len
) >= 0)
2051 char *mingw_query_user_email(void)
2053 return get_extended_user_info(NameUserPrincipal
);
2056 struct passwd
*getpwuid(int uid
)
2058 static unsigned initialized
;
2059 static char user_name
[100];
2060 static struct passwd
*p
;
2066 len
= sizeof(user_name
);
2067 if (!GetUserName(user_name
, &len
)) {
2072 p
= xmalloc(sizeof(*p
));
2073 p
->pw_name
= user_name
;
2074 p
->pw_gecos
= get_extended_user_info(NameDisplay
);
2076 p
->pw_gecos
= "unknown";
2083 static HANDLE timer_event
;
2084 static HANDLE timer_thread
;
2085 static int timer_interval
;
2086 static int one_shot
;
2087 static sig_handler_t timer_fn
= SIG_DFL
, sigint_fn
= SIG_DFL
;
2089 /* The timer works like this:
2090 * The thread, ticktack(), is a trivial routine that most of the time
2091 * only waits to receive the signal to terminate. The main thread tells
2092 * the thread to terminate by setting the timer_event to the signalled
2094 * But ticktack() interrupts the wait state after the timer's interval
2095 * length to call the signal handler.
2098 static unsigned __stdcall
ticktack(void *dummy
)
2100 while (WaitForSingleObject(timer_event
, timer_interval
) == WAIT_TIMEOUT
) {
2101 mingw_raise(SIGALRM
);
2108 static int start_timer_thread(void)
2110 timer_event
= CreateEvent(NULL
, FALSE
, FALSE
, NULL
);
2112 timer_thread
= (HANDLE
) _beginthreadex(NULL
, 0, ticktack
, NULL
, 0, NULL
);
2114 return errno
= ENOMEM
,
2115 error("cannot start timer thread");
2117 return errno
= ENOMEM
,
2118 error("cannot allocate resources for timer");
2122 static void stop_timer_thread(void)
2125 SetEvent(timer_event
); /* tell thread to terminate */
2127 int rc
= WaitForSingleObject(timer_thread
, 1000);
2128 if (rc
== WAIT_TIMEOUT
)
2129 error("timer thread did not terminate timely");
2130 else if (rc
!= WAIT_OBJECT_0
)
2131 error("waiting for timer thread failed: %lu",
2133 CloseHandle(timer_thread
);
2136 CloseHandle(timer_event
);
2138 timer_thread
= NULL
;
2141 static inline int is_timeval_eq(const struct timeval
*i1
, const struct timeval
*i2
)
2143 return i1
->tv_sec
== i2
->tv_sec
&& i1
->tv_usec
== i2
->tv_usec
;
2146 int setitimer(int type
, struct itimerval
*in
, struct itimerval
*out
)
2148 static const struct timeval zero
;
2149 static int atexit_done
;
2152 return errno
= EINVAL
,
2153 error("setitimer param 3 != NULL not implemented");
2154 if (!is_timeval_eq(&in
->it_interval
, &zero
) &&
2155 !is_timeval_eq(&in
->it_interval
, &in
->it_value
))
2156 return errno
= EINVAL
,
2157 error("setitimer: it_interval must be zero or eq it_value");
2160 stop_timer_thread();
2162 if (is_timeval_eq(&in
->it_value
, &zero
) &&
2163 is_timeval_eq(&in
->it_interval
, &zero
))
2166 timer_interval
= in
->it_value
.tv_sec
* 1000 + in
->it_value
.tv_usec
/ 1000;
2167 one_shot
= is_timeval_eq(&in
->it_interval
, &zero
);
2169 atexit(stop_timer_thread
);
2172 return start_timer_thread();
2175 int sigaction(int sig
, struct sigaction
*in
, struct sigaction
*out
)
2178 return errno
= EINVAL
,
2179 error("sigaction only implemented for SIGALRM");
2181 return errno
= EINVAL
,
2182 error("sigaction: param 3 != NULL not implemented");
2184 timer_fn
= in
->sa_handler
;
2189 sig_handler_t
mingw_signal(int sig
, sig_handler_t handler
)
2201 sigint_fn
= handler
;
2205 return signal(sig
, handler
);
2212 int mingw_raise(int sig
)
2216 if (timer_fn
== SIG_DFL
) {
2217 if (isatty(STDERR_FILENO
))
2218 fputs("Alarm clock\n", stderr
);
2219 exit(128 + SIGALRM
);
2220 } else if (timer_fn
!= SIG_IGN
)
2225 if (sigint_fn
== SIG_DFL
)
2227 else if (sigint_fn
!= SIG_IGN
)
2236 int link(const char *oldpath
, const char *newpath
)
2238 wchar_t woldpath
[MAX_PATH
], wnewpath
[MAX_PATH
];
2239 if (xutftowcs_path(woldpath
, oldpath
) < 0 ||
2240 xutftowcs_path(wnewpath
, newpath
) < 0)
2243 if (!CreateHardLinkW(wnewpath
, woldpath
, NULL
)) {
2244 errno
= err_win_to_posix(GetLastError());
2250 pid_t
waitpid(pid_t pid
, int *status
, int options
)
2252 HANDLE h
= OpenProcess(SYNCHRONIZE
| PROCESS_QUERY_INFORMATION
,
2259 if (pid
> 0 && options
& WNOHANG
) {
2260 if (WAIT_OBJECT_0
!= WaitForSingleObject(h
, 0)) {
2264 options
&= ~WNOHANG
;
2268 struct pinfo_t
**ppinfo
;
2269 if (WaitForSingleObject(h
, INFINITE
) != WAIT_OBJECT_0
) {
2275 GetExitCodeProcess(h
, (LPDWORD
)status
);
2277 EnterCriticalSection(&pinfo_cs
);
2281 struct pinfo_t
*info
= *ppinfo
;
2282 if (info
->pid
== pid
) {
2283 CloseHandle(info
->proc
);
2284 *ppinfo
= info
->next
;
2288 ppinfo
= &info
->next
;
2291 LeaveCriticalSection(&pinfo_cs
);
2302 int mingw_has_dos_drive_prefix(const char *path
)
2307 * Does it start with an ASCII letter (i.e. highest bit not set),
2308 * followed by a colon?
2310 if (!(0x80 & (unsigned char)*path
))
2311 return *path
&& path
[1] == ':' ? 2 : 0;
2314 * While drive letters must be letters of the English alphabet, it is
2315 * possible to assign virtually _any_ Unicode character via `subst` as
2316 * a drive letter to "virtual drives". Even `1`, or `ä`. Or fun stuff
2319 * subst ֍: %USERPROFILE%\Desktop
2321 for (i
= 1; i
< 4 && (0x80 & (unsigned char)path
[i
]); i
++)
2322 ; /* skip first UTF-8 character */
2323 return path
[i
] == ':' ? i
+ 1 : 0;
2326 int mingw_skip_dos_drive_prefix(char **path
)
2328 int ret
= has_dos_drive_prefix(*path
);
2333 int mingw_offset_1st_component(const char *path
)
2335 char *pos
= (char *)path
;
2338 if (!skip_dos_drive_prefix(&pos
) &&
2339 is_dir_sep(pos
[0]) && is_dir_sep(pos
[1])) {
2340 /* skip server name */
2341 pos
= strpbrk(pos
+ 2, "\\/");
2343 return 0; /* Error: malformed unc path */
2347 } while (*pos
&& !is_dir_sep(*pos
));
2350 return pos
+ is_dir_sep(*pos
) - path
;
2353 int xutftowcsn(wchar_t *wcs
, const char *utfs
, size_t wcslen
, int utflen
)
2355 int upos
= 0, wpos
= 0;
2356 const unsigned char *utf
= (const unsigned char*) utfs
;
2357 if (!utf
|| !wcs
|| wcslen
< 1) {
2361 /* reserve space for \0 */
2366 while (upos
< utflen
) {
2367 int c
= utf
[upos
++] & 0xff;
2368 if (utflen
== INT_MAX
&& c
== 0)
2371 if (wpos
>= wcslen
) {
2380 } else if (c
>= 0xc2 && c
< 0xe0 && upos
< utflen
&&
2381 (utf
[upos
] & 0xc0) == 0x80) {
2383 c
= ((c
& 0x1f) << 6);
2384 c
|= (utf
[upos
++] & 0x3f);
2386 } else if (c
>= 0xe0 && c
< 0xf0 && upos
+ 1 < utflen
&&
2387 !(c
== 0xe0 && utf
[upos
] < 0xa0) && /* over-long encoding */
2388 (utf
[upos
] & 0xc0) == 0x80 &&
2389 (utf
[upos
+ 1] & 0xc0) == 0x80) {
2391 c
= ((c
& 0x0f) << 12);
2392 c
|= ((utf
[upos
++] & 0x3f) << 6);
2393 c
|= (utf
[upos
++] & 0x3f);
2395 } else if (c
>= 0xf0 && c
< 0xf5 && upos
+ 2 < utflen
&&
2396 wpos
+ 1 < wcslen
&&
2397 !(c
== 0xf0 && utf
[upos
] < 0x90) && /* over-long encoding */
2398 !(c
== 0xf4 && utf
[upos
] >= 0x90) && /* > \u10ffff */
2399 (utf
[upos
] & 0xc0) == 0x80 &&
2400 (utf
[upos
+ 1] & 0xc0) == 0x80 &&
2401 (utf
[upos
+ 2] & 0xc0) == 0x80) {
2402 /* 4-byte utf-8: convert to \ud8xx \udcxx surrogate pair */
2403 c
= ((c
& 0x07) << 18);
2404 c
|= ((utf
[upos
++] & 0x3f) << 12);
2405 c
|= ((utf
[upos
++] & 0x3f) << 6);
2406 c
|= (utf
[upos
++] & 0x3f);
2408 wcs
[wpos
++] = 0xd800 | (c
>> 10);
2409 wcs
[wpos
++] = 0xdc00 | (c
& 0x3ff);
2410 } else if (c
>= 0xa0) {
2411 /* invalid utf-8 byte, printable unicode char: convert 1:1 */
2414 /* invalid utf-8 byte, non-printable unicode: convert to hex */
2415 static const char *hex
= "0123456789abcdef";
2416 wcs
[wpos
++] = hex
[c
>> 4];
2418 wcs
[wpos
++] = hex
[c
& 0x0f];
2425 int xwcstoutf(char *utf
, const wchar_t *wcs
, size_t utflen
)
2427 if (!wcs
|| !utf
|| utflen
< 1) {
2431 utflen
= WideCharToMultiByte(CP_UTF8
, 0, wcs
, -1, utf
, utflen
, NULL
, NULL
);
2438 static void setup_windows_environment(void)
2440 char *tmp
= getenv("TMPDIR");
2442 /* on Windows it is TMP and TEMP */
2444 if (!(tmp
= getenv("TMP")))
2445 tmp
= getenv("TEMP");
2447 setenv("TMPDIR", tmp
, 1);
2448 tmp
= getenv("TMPDIR");
2454 * Convert all dir separators to forward slashes,
2455 * to help shell commands called from the Git
2456 * executable (by not mistaking the dir separators
2457 * for escape characters).
2459 convert_slashes(tmp
);
2462 /* simulate TERM to enable auto-color (see color.c) */
2463 if (!getenv("TERM"))
2464 setenv("TERM", "cygwin", 1);
2467 int is_valid_win32_path(const char *path
)
2469 int preceding_space_or_period
= 0, i
= 0, periods
= 0;
2474 skip_dos_drive_prefix((char **)&path
);
2480 case '/': case '\\':
2481 /* cannot end in ` ` or `.`, except for `.` and `..` */
2482 if (preceding_space_or_period
&&
2483 (i
!= periods
|| periods
> 2))
2488 i
= periods
= preceding_space_or_period
= 0;
2494 preceding_space_or_period
= 1;
2497 case ':': /* DOS drive prefix was already skipped */
2498 case '<': case '>': case '"': case '|': case '?': case '*':
2499 /* illegal character */
2502 if (c
> '\0' && c
< '\x20')
2503 /* illegal character */
2506 preceding_space_or_period
= 0;
2512 * Disable MSVCRT command line wildcard expansion (__getmainargs called from
2513 * mingw startup code, see init.c in mingw runtime).
2521 extern int __wgetmainargs(int *argc
, wchar_t ***argv
, wchar_t ***env
, int glob
,
2524 static NORETURN
void die_startup(void)
2526 fputs("fatal: not enough memory for initialization", stderr
);
2530 static void *malloc_startup(size_t size
)
2532 void *result
= malloc(size
);
2538 static char *wcstoutfdup_startup(char *buffer
, const wchar_t *wcs
, size_t len
)
2540 len
= xwcstoutf(buffer
, wcs
, len
) + 1;
2541 return memcpy(malloc_startup(len
), buffer
, len
);
2544 static void maybe_redirect_std_handle(const wchar_t *key
, DWORD std_id
, int fd
,
2545 DWORD desired_access
, DWORD flags
)
2547 DWORD create_flag
= fd
? OPEN_ALWAYS
: OPEN_EXISTING
;
2548 wchar_t buf
[MAX_PATH
];
2549 DWORD max
= ARRAY_SIZE(buf
);
2551 DWORD ret
= GetEnvironmentVariableW(key
, buf
, max
);
2553 if (!ret
|| ret
>= max
)
2556 /* make sure this does not leak into child processes */
2557 SetEnvironmentVariableW(key
, NULL
);
2558 if (!wcscmp(buf
, L
"off")) {
2560 handle
= GetStdHandle(std_id
);
2561 if (handle
!= INVALID_HANDLE_VALUE
)
2562 CloseHandle(handle
);
2565 if (std_id
== STD_ERROR_HANDLE
&& !wcscmp(buf
, L
"2>&1")) {
2566 handle
= GetStdHandle(STD_OUTPUT_HANDLE
);
2567 if (handle
== INVALID_HANDLE_VALUE
) {
2569 handle
= GetStdHandle(std_id
);
2570 if (handle
!= INVALID_HANDLE_VALUE
)
2571 CloseHandle(handle
);
2573 int new_fd
= _open_osfhandle((intptr_t)handle
, O_BINARY
);
2574 SetStdHandle(std_id
, handle
);
2576 /* do *not* close the new_fd: that would close stdout */
2580 handle
= CreateFileW(buf
, desired_access
, 0, NULL
, create_flag
,
2582 if (handle
!= INVALID_HANDLE_VALUE
) {
2583 int new_fd
= _open_osfhandle((intptr_t)handle
, O_BINARY
);
2584 SetStdHandle(std_id
, handle
);
2590 static void maybe_redirect_std_handles(void)
2592 maybe_redirect_std_handle(L
"GIT_REDIRECT_STDIN", STD_INPUT_HANDLE
, 0,
2593 GENERIC_READ
, FILE_ATTRIBUTE_NORMAL
);
2594 maybe_redirect_std_handle(L
"GIT_REDIRECT_STDOUT", STD_OUTPUT_HANDLE
, 1,
2595 GENERIC_WRITE
, FILE_ATTRIBUTE_NORMAL
);
2596 maybe_redirect_std_handle(L
"GIT_REDIRECT_STDERR", STD_ERROR_HANDLE
, 2,
2597 GENERIC_WRITE
, FILE_FLAG_NO_BUFFERING
);
2600 void mingw_startup(void)
2602 int i
, maxlen
, argc
;
2604 wchar_t **wenv
, **wargv
;
2607 maybe_redirect_std_handles();
2609 /* get wide char arguments and environment */
2611 if (__wgetmainargs(&argc
, &wargv
, &wenv
, _CRT_glob
, &si
) < 0)
2614 /* determine size of argv and environ conversion buffer */
2615 maxlen
= wcslen(wargv
[0]);
2616 for (i
= 1; i
< argc
; i
++)
2617 maxlen
= max(maxlen
, wcslen(wargv
[i
]));
2619 /* allocate buffer (wchar_t encodes to max 3 UTF-8 bytes) */
2620 maxlen
= 3 * maxlen
+ 1;
2621 buffer
= malloc_startup(maxlen
);
2623 /* convert command line arguments and environment to UTF-8 */
2624 for (i
= 0; i
< argc
; i
++)
2625 __argv
[i
] = wcstoutfdup_startup(buffer
, wargv
[i
], maxlen
);
2628 /* fix Windows specific environment settings */
2629 setup_windows_environment();
2631 unset_environment_variables
= xstrdup("PERL5LIB");
2633 /* initialize critical section for waitpid pinfo_t list */
2634 InitializeCriticalSection(&pinfo_cs
);
2636 /* set up default file mode and file modes for stdin/out/err */
2638 _setmode(_fileno(stdin
), _O_BINARY
);
2639 _setmode(_fileno(stdout
), _O_BINARY
);
2640 _setmode(_fileno(stderr
), _O_BINARY
);
2642 /* initialize Unicode console */
2646 int uname(struct utsname
*buf
)
2648 unsigned v
= (unsigned)GetVersion();
2649 memset(buf
, 0, sizeof(*buf
));
2650 xsnprintf(buf
->sysname
, sizeof(buf
->sysname
), "Windows");
2651 xsnprintf(buf
->release
, sizeof(buf
->release
),
2652 "%u.%u", v
& 0xff, (v
>> 8) & 0xff);
2653 /* assuming NT variants only.. */
2654 xsnprintf(buf
->version
, sizeof(buf
->version
),
2655 "%u", (v
>> 16) & 0x7fff);