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| author | Sage Weil <sage@newdream.net> | 2011-07-19 22:25:04 +0400 |
|---|---|---|
| committer | Sage Weil <sage@newdream.net> | 2011-07-19 22:25:04 +0400 |
| commit | 38be7a79f7c99dd01425f19ef6cf744878b6a94b (patch) | |
| tree | 5f31b24e4ecca2564ed01b212e3193ba7b2ed4b6 | |
| parent | d7f124f129a6aea99938e0d4172c741b56fefeda (diff) | |
| download | linux-38be7a79f7c99dd01425f19ef6cf744878b6a94b.tar.xz | |
ceph: fix file mode calculation
open(2) must always include one of O_RDONLY, O_WRONLY, or O_RDWR. No need
for any O_APPEND special case.
Passing O_WRONLY|O_RDWR is undefined according to the man page, but the
Linux VFS interprets this as O_RDWR, so we'll do the same.
This fixes open(2) with flags O_RDWR|O_APPEND, which was incorrectly being
translated to readonly.
Reported-by: Fyodor Ustinov <ufm@ufm.su>
Signed-off-by: Sage Weil <sage@newdream.net>
| -rw-r--r-- | net/ceph/ceph_fs.c | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/net/ceph/ceph_fs.c b/net/ceph/ceph_fs.c index a3a3a31d3c37..41466ccb972a 100644 --- a/net/ceph/ceph_fs.c +++ b/net/ceph/ceph_fs.c @@ -36,16 +36,19 @@ int ceph_flags_to_mode(int flags) if ((flags & O_DIRECTORY) == O_DIRECTORY) return CEPH_FILE_MODE_PIN; #endif - if ((flags & O_APPEND) == O_APPEND) - flags |= O_WRONLY; - if ((flags & O_ACCMODE) == O_RDWR) - mode = CEPH_FILE_MODE_RDWR; - else if ((flags & O_ACCMODE) == O_WRONLY) + switch (flags & O_ACCMODE) { + case O_WRONLY: mode = CEPH_FILE_MODE_WR; - else + break; + case O_RDONLY: mode = CEPH_FILE_MODE_RD; - + break; + case O_RDWR: + case O_ACCMODE: /* this is what the VFS does */ + mode = CEPH_FILE_MODE_RDWR; + break; + } #ifdef O_LAZY if (flags & O_LAZY) mode |= CEPH_FILE_MODE_LAZY; |