From 87ec21741138bb42e7f943bb142b1d8567c10925 Mon Sep 17 00:00:00 2001 From: Steven Whitehouse Date: Fri, 22 May 2009 10:54:50 +0100 Subject: GFS2: Move gfs2_unlink_ok into ops_inode.c Another function which is only called from one ops_inode.c so we move it and make it static. Signed-off-by: Steven Whitehouse --- fs/gfs2/ops_inode.c | 38 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) (limited to 'fs/gfs2/ops_inode.c') diff --git a/fs/gfs2/ops_inode.c b/fs/gfs2/ops_inode.c index f607f0908cff..f8bd20baf99c 100644 --- a/fs/gfs2/ops_inode.c +++ b/fs/gfs2/ops_inode.c @@ -262,6 +262,44 @@ out_parent: return error; } +/* + * gfs2_unlink_ok - check to see that a inode is still in a directory + * @dip: the directory + * @name: the name of the file + * @ip: the inode + * + * Assumes that the lock on (at least) @dip is held. + * + * Returns: 0 if the parent/child relationship is correct, errno if it isn't + */ + +static int gfs2_unlink_ok(struct gfs2_inode *dip, const struct qstr *name, + const struct gfs2_inode *ip) +{ + int error; + + if (IS_IMMUTABLE(&ip->i_inode) || IS_APPEND(&ip->i_inode)) + return -EPERM; + + if ((dip->i_inode.i_mode & S_ISVTX) && + dip->i_inode.i_uid != current_fsuid() && + ip->i_inode.i_uid != current_fsuid() && !capable(CAP_FOWNER)) + return -EPERM; + + if (IS_APPEND(&dip->i_inode)) + return -EPERM; + + error = gfs2_permission(&dip->i_inode, MAY_WRITE | MAY_EXEC); + if (error) + return error; + + error = gfs2_dir_check(&dip->i_inode, name, ip); + if (error) + return error; + + return 0; +} + /** * gfs2_unlink - Unlink a file * @dir: The inode of the directory containing the file to unlink -- cgit v1.2.3