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authorMiklos Szeredi <miklos@szeredi.hu>2008-07-02 21:12:01 +0200
committerSteven Whitehouse <swhiteho@redhat.com>2008-07-03 10:22:01 +0100
commitf58ba889106af60f52af792efbe1973e458a2138 (patch)
treef81426c7f611b74dec685cd416d3da8e7fe647d2 /fs/gfs2/inode.h
parent[GFS2] Fix module building (diff)
downloadlinux-dev-f58ba889106af60f52af792efbe1973e458a2138.tar.xz
linux-dev-f58ba889106af60f52af792efbe1973e458a2138.zip
[GFS2] don't call permission()
GFS2 calls permission() to verify permissions after locks on the files have been taken. For this it's sufficient to call gfs2_permission() instead. This results in the following changes: - IS_RDONLY() check is not performed - IS_IMMUTABLE() check is not performed - devcgroup_inode_permission() is not called - security_inode_permission() is not called IS_RDONLY() should be unnecessary anyway, as the per-mount read-only flag should provide protection against read-only remounts during operations. do_gfs2_set_flags() has been fixed to perform mnt_want_write()/mnt_drop_write() to protect against remounting read-only. IS_IMMUTABLE has been added to gfs2_permission() Repeating the security checks seems to be pointless, as they don't normally change, and if they do, it's independent of the filesystem state. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Diffstat (limited to 'fs/gfs2/inode.h')
-rw-r--r--fs/gfs2/inode.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/gfs2/inode.h b/fs/gfs2/inode.h
index 580da454b38f..04e9fef3f99a 100644
--- a/fs/gfs2/inode.h
+++ b/fs/gfs2/inode.h
@@ -91,6 +91,7 @@ int gfs2_rmdiri(struct gfs2_inode *dip, const struct qstr *name,
struct gfs2_inode *ip);
int gfs2_unlink_ok(struct gfs2_inode *dip, const struct qstr *name,
const struct gfs2_inode *ip);
+int gfs2_permission(struct inode *inode, int mask);
int gfs2_ok_to_move(struct gfs2_inode *this, struct gfs2_inode *to);
int gfs2_readlinki(struct gfs2_inode *ip, char **buf, unsigned int *len);
int gfs2_glock_nq_atime(struct gfs2_holder *gh);