diff options
author | Torsten Bögershausen <tboegi@web.de> | 2013-03-23 16:40:29 +0400 |
---|---|---|
committer | Junio C Hamano <gitster@pobox.com> | 2013-03-26 01:57:33 +0400 |
commit | 0117c2f043183fb99e9b046b0df7d64c1b296624 (patch) | |
tree | a14923132f37710b05f36e596cc8cd9acff23517 | |
parent | 7b592fadf1e23b10b913e0771b9f711770597266 (diff) |
Make core.sharedRepository work under cygwin 1.7
When core.sharedRepository is used, set_shared_perm() in path.c
needs lstat() to return the correct POSIX permissions.
The default for cygwin is core.ignoreCygwinFSTricks = false, which
means that the fast implementation in do_stat() is used instead of
lstat().
lstat() under cygwin uses the Windows security model to implement
POSIX-like permissions. The user, group or everyone bits can be set
individually.
do_stat() simplifes the file permission bits, and may return a wrong
value. The read-only attribute of a file is used to calculate the
permissions, resulting in either rw-r--r-- or r--r--r--
One effect of the simplified do_stat() is that t1301 fails.
Add a function cygwin_get_st_mode_bits() which returns the POSIX
permissions. When not compiling for cygwin, true_mode_bits() in
path.c is used.
Side note:
t1301 passes under cygwin 1.5.
The "user write" bit is synchronized with the "read only" attribute
of a file:
$ chmod 444 x
$ attrib x
A R C:\temp\pt\x
cygwin 1.7 would show
A C:\temp\pt\x
Signed-off-by: Torsten Bögershausen <tboegi@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
-rw-r--r-- | compat/cygwin.c | 13 | ||||
-rw-r--r-- | compat/cygwin.h | 5 | ||||
-rw-r--r-- | git-compat-util.h | 1 | ||||
-rw-r--r-- | path.c | 20 |
4 files changed, 36 insertions, 3 deletions
diff --git a/compat/cygwin.c b/compat/cygwin.c index 5428858875..871b41d23a 100644 --- a/compat/cygwin.c +++ b/compat/cygwin.c @@ -1,3 +1,4 @@ +#define CYGWIN_C #define WIN32_LEAN_AND_MEAN #ifdef CYGWIN_V15_WIN32API #include "../git-compat-util.h" @@ -10,6 +11,18 @@ #endif #include "../cache.h" /* to read configuration */ +/* + * Return POSIX permission bits, regardless of core.ignorecygwinfstricks + */ +int cygwin_get_st_mode_bits(const char *path, int *mode) +{ + struct stat st; + if (lstat(path, &st) < 0) + return -1; + *mode = st.st_mode; + return 0; +} + static inline void filetime_to_timespec(const FILETIME *ft, struct timespec *ts) { long long winTime = ((long long)ft->dwHighDateTime << 32) + diff --git a/compat/cygwin.h b/compat/cygwin.h index a3229f5b4f..c04965a2e0 100644 --- a/compat/cygwin.h +++ b/compat/cygwin.h @@ -4,6 +4,11 @@ typedef int (*stat_fn_t)(const char*, struct stat*); extern stat_fn_t cygwin_stat_fn; extern stat_fn_t cygwin_lstat_fn; +int cygwin_get_st_mode_bits(const char *path, int *mode); +#define get_st_mode_bits(p,m) cygwin_get_st_mode_bits((p),(m)) +#ifndef CYGWIN_C +/* cygwin.c needs the original lstat() */ #define stat(path, buf) (*cygwin_stat_fn)(path, buf) #define lstat(path, buf) (*cygwin_lstat_fn)(path, buf) +#endif diff --git a/git-compat-util.h b/git-compat-util.h index 90e0372038..cde442fb5f 100644 --- a/git-compat-util.h +++ b/git-compat-util.h @@ -163,6 +163,7 @@ typedef long intptr_t; typedef unsigned long uintptr_t; #endif +int get_st_mode_bits(const char *path, int *mode); #if defined(__CYGWIN__) #undef _XOPEN_SOURCE #include <grp.h> @@ -14,6 +14,22 @@ #include "strbuf.h" #include "string-list.h" +#ifndef get_st_mode_bits +/* + * The replacement lstat(2) we use on Cygwin is incomplete and + * may return wrong permission bits. Most of the time we do not care, + * but the callsites of this wrapper do care. + */ +int get_st_mode_bits(const char *path, int *mode) +{ + struct stat st; + if (lstat(path, &st) < 0) + return -1; + *mode = st.st_mode; + return 0; +} +#endif + static char bad_path[] = "/bad-path/"; static char *get_pathname(void) @@ -391,7 +407,6 @@ const char *enter_repo(const char *path, int strict) int set_shared_perm(const char *path, int mode) { - struct stat st; int tweak, shared, orig_mode; if (!shared_repository) { @@ -400,9 +415,8 @@ int set_shared_perm(const char *path, int mode) return 0; } if (!mode) { - if (lstat(path, &st) < 0) + if (get_st_mode_bits(path, &mode) < 0) return -1; - mode = st.st_mode; orig_mode = mode; } else orig_mode = 0; |