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authorDavid Howells <dhowells@redhat.com>2007-04-27 02:57:07 +0400
committerDavid S. Miller <davem@davemloft.net>2007-04-27 02:57:07 +0400
commit00d3b7a4533e367b0dc2812a706db8f9f071c27f (patch)
treef0b1ae0266267cb2c54cb11aa61ad0758ce9c0f5 /fs/afs/mntpt.c
parent436058a49e0fb91c74454dbee9cfee6fb53b4336 (diff)
downloadlinux-00d3b7a4533e367b0dc2812a706db8f9f071c27f.tar.xz
[AFS]: Add security support.
Add security support to the AFS filesystem. Kerberos IV tickets are added as RxRPC keys are added to the session keyring with the klog program. open() and other VFS operations then find this ticket with request_key() and either use it immediately (eg: mkdir, unlink) or attach it to a file descriptor (open). Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'fs/afs/mntpt.c')
-rw-r--r--fs/afs/mntpt.c12
1 files changed, 8 insertions, 4 deletions
diff --git a/fs/afs/mntpt.c b/fs/afs/mntpt.c
index 08c11a0b66bd..b905ae37f912 100644
--- a/fs/afs/mntpt.c
+++ b/fs/afs/mntpt.c
@@ -48,8 +48,11 @@ unsigned long afs_mntpt_expiry_timeout = 10 * 60;
* check a symbolic link to see whether it actually encodes a mountpoint
* - sets the AFS_VNODE_MOUNTPOINT flag on the vnode appropriately
*/
-int afs_mntpt_check_symlink(struct afs_vnode *vnode)
+int afs_mntpt_check_symlink(struct afs_vnode *vnode, struct key *key)
{
+ struct file file = {
+ .private_data = key,
+ };
struct page *page;
size_t size;
char *buf;
@@ -58,7 +61,7 @@ int afs_mntpt_check_symlink(struct afs_vnode *vnode)
_enter("{%u,%u}", vnode->fid.vnode, vnode->fid.unique);
/* read the contents of the symlink into the pagecache */
- page = read_mapping_page(AFS_VNODE_TO_I(vnode)->i_mapping, 0, NULL);
+ page = read_mapping_page(AFS_VNODE_TO_I(vnode)->i_mapping, 0, &file);
if (IS_ERR(page)) {
ret = PTR_ERR(page);
goto out;
@@ -214,7 +217,7 @@ static void *afs_mntpt_follow_link(struct dentry *dentry, struct nameidata *nd)
struct vfsmount *newmnt;
int err;
- _enter("%p{%s},{%s:%p{%s}}",
+ _enter("%p{%s},{%s:%p{%s},}",
dentry,
dentry->d_name.name,
nd->mnt->mnt_devname,
@@ -234,7 +237,8 @@ static void *afs_mntpt_follow_link(struct dentry *dentry, struct nameidata *nd)
err = do_add_mount(newmnt, nd, MNT_SHRINKABLE, &afs_vfsmounts);
switch (err) {
case 0:
- path_release(nd);
+ mntput(nd->mnt);
+ dput(nd->dentry);
nd->mnt = newmnt;
nd->dentry = dget(newmnt->mnt_root);
schedule_delayed_work(&afs_mntpt_expiry_timer,