diff options
| author |   Jeff Layton <jlayton@redhat.com> | 2014-02-03 12:13:08 -0500 |
|---|---|---|
| committer | Jeff Layton <jlayton@redhat.com> | 2014-03-31 08:24:42 -0400 |
| commit | bce7560d4946dcfc07b0217b1d3862ed60ff7188 (patch) | |
| tree | 548ef2a83300ee6c4fede7a20be30aee13b9ca5f /fs | |
| parent | locks: fix posix lock range overflow handling (diff) | |
| download | linux-dev-bce7560d4946dcfc07b0217b1d3862ed60ff7188.tar.xz linux-dev-bce7560d4946dcfc07b0217b1d3862ed60ff7188.zip | |
locks: consolidate checks for compatible filp->f_mode values in setlk handlers
Move this check into flock64_to_posix_lock instead of duplicating it in
two places. This also fixes a minor wart in the code where we continue
referring to the struct flock after converting it to struct file_lock.
Acked-by: J. Bruce Fields <bfields@fieldses.org>
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/locks.c | 46 |
1 files changed, 12 insertions, 34 deletions
diff --git a/fs/locks.c b/fs/locks.c index b49e853a9c7b..4cd25781b0a4 100644 --- a/fs/locks.c +++ b/fs/locks.c @@ -388,6 +388,18 @@ static int flock64_to_posix_lock(struct file *filp, struct file_lock *fl, fl->fl_ops = NULL; fl->fl_lmops = NULL; + /* Ensure that fl->fl_filp has compatible f_mode */ + switch (l->l_type) { + case F_RDLCK: + if (!(filp->f_mode & FMODE_READ)) + return -EBADF; + break; + case F_WRLCK: + if (!(filp->f_mode & FMODE_WRITE)) + return -EBADF; + break; + } + return assign_type(fl, l->l_type); } @@ -2025,23 +2037,6 @@ again: file_lock->fl_flags |= FL_SLEEP; } - error = -EBADF; - switch (flock.l_type) { - case F_RDLCK: - if (!(filp->f_mode & FMODE_READ)) - goto out; - break; - case F_WRLCK: - if (!(filp->f_mode & FMODE_WRITE)) - goto out; - break; - case F_UNLCK: - break; - default: - error = -EINVAL; - goto out; - } - error = do_lock_file_wait(filp, cmd, file_lock); /* @@ -2143,23 +2138,6 @@ again: file_lock->fl_flags |= FL_SLEEP; } - error = -EBADF; - switch (flock.l_type) { - case F_RDLCK: - if (!(filp->f_mode & FMODE_READ)) - goto out; - break; - case F_WRLCK: - if (!(filp->f_mode & FMODE_WRITE)) - goto out; - break; - case F_UNLCK: - break; - default: - error = -EINVAL; - goto out; - } - error = do_lock_file_wait(filp, cmd, file_lock); /* |