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| author | David Howells <dhowells@redhat.com> | 2006-06-23 02:02:58 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-23 07:42:45 -0700 |
| commit | 726c334223180e3c0197cc980a432681370d4baf (patch) | |
| tree | 8327b354bb3dc959a6606051ae6f8d4d035e38a2 /security | |
| parent | 454e2398be9b9fa30433fccc548db34d19aa9958 (diff) | |
| download | lwn-726c334223180e3c0197cc980a432681370d4baf.tar.gz lwn-726c334223180e3c0197cc980a432681370d4baf.zip | |
[PATCH] VFS: Permit filesystem to perform statfs with a known root dentry
Give the statfs superblock operation a dentry pointer rather than a superblock
pointer.
This complements the get_sb() patch. That reduced the significance of
sb->s_root, allowing NFS to place a fake root there. However, NFS does
require a dentry to use as a target for the statfs operation. This permits
the root in the vfsmount to be used instead.
linux/mount.h has been added where necessary to make allyesconfig build
successfully.
Interest has also been expressed for use with the FUSE and XFS filesystems.
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Cc: Nathan Scott <nathans@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'security')
| -rw-r--r-- | security/dummy.c | 2 | ||||
| -rw-r--r-- | security/selinux/hooks.c | 6 |
2 files changed, 4 insertions, 4 deletions
diff --git a/security/dummy.c b/security/dummy.c index 6de4a4a5eb13..c98d553984ec 100644 --- a/security/dummy.c +++ b/security/dummy.c @@ -191,7 +191,7 @@ static int dummy_sb_kern_mount (struct super_block *sb, void *data) return 0; } -static int dummy_sb_statfs (struct super_block *sb) +static int dummy_sb_statfs (struct dentry *dentry) { return 0; } diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c index 524915dfda64..093efba4d9b6 100644 --- a/security/selinux/hooks.c +++ b/security/selinux/hooks.c @@ -1903,13 +1903,13 @@ static int selinux_sb_kern_mount(struct super_block *sb, void *data) return superblock_has_perm(current, sb, FILESYSTEM__MOUNT, &ad); } -static int selinux_sb_statfs(struct super_block *sb) +static int selinux_sb_statfs(struct dentry *dentry) { struct avc_audit_data ad; AVC_AUDIT_DATA_INIT(&ad,FS); - ad.u.fs.dentry = sb->s_root; - return superblock_has_perm(current, sb, FILESYSTEM__GETATTR, &ad); + ad.u.fs.dentry = dentry->d_sb->s_root; + return superblock_has_perm(current, dentry->d_sb, FILESYSTEM__GETATTR, &ad); } static int selinux_mount(char * dev_name, |