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CRED: Pass credentials through dentry_open()

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Pass credentials through dentry_open() so that the COW creds patch can have
SELinux's flush_unauthorized_files() pass the appropriate creds back to itself
when it opens its null chardev.

The security_dentry_open() call also now takes a creds pointer, as does the
dentry_open hook in struct security_operations.

Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: James Morris <jmorris@namei.org>
Signed-off-by: James Morris <jmorris@namei.org>
This commit is contained in:
David Howells
2008-11-14 10:39:22 +11:00
committed by James Morris
parent 88e67f3b88
commit 745ca2475a
19 changed files with 67 additions and 40 deletions
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9
fs/ecryptfs/kthread.c
View File

@@ -73,7 +73,7 @@ static int ecryptfs_threadfn(void *ignored)
mntget(req->lower_mnt);
(*req->lower_file) = dentry_open(
req->lower_dentry, req->lower_mnt,
(O_RDWR | O_LARGEFILE));
(O_RDWR | O_LARGEFILE), current_cred());
req->flags |= ECRYPTFS_REQ_PROCESSED;
}
wake_up(&req->wait);
@@ -132,7 +132,8 @@ void ecryptfs_destroy_kthread(void)
*/
int ecryptfs_privileged_open(struct file **lower_file,
struct dentry *lower_dentry,
struct vfsmount *lower_mnt)
struct vfsmount *lower_mnt,
const struct cred *cred)
{
struct ecryptfs_open_req *req;
int rc = 0;
@@ -143,7 +144,7 @@ int ecryptfs_privileged_open(struct file **lower_file,
dget(lower_dentry);
mntget(lower_mnt);
(*lower_file) = dentry_open(lower_dentry, lower_mnt,
(O_RDWR | O_LARGEFILE));
(O_RDWR | O_LARGEFILE), cred);
if (!IS_ERR(*lower_file))
goto out;
req = kmem_cache_alloc(ecryptfs_open_req_cache, GFP_KERNEL);
@@ -184,7 +185,7 @@ int ecryptfs_privileged_open(struct file **lower_file,
dget(lower_dentry);
mntget(lower_mnt);
(*lower_file) = dentry_open(lower_dentry, lower_mnt,
(O_RDONLY | O_LARGEFILE));
(O_RDONLY | O_LARGEFILE), cred);
if (IS_ERR(*lower_file)) {
rc = PTR_ERR(*req->lower_file);
(*lower_file) = NULL;