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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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4
fs/exportfs/expfs.c
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@@ -14,6 +14,7 @@
#include <linux/module.h>
#include <linux/mount.h>
#include <linux/namei.h>
#include <linux/sched.h>
#define dprintk(fmt, args...) do{}while(0)
@@ -249,6 +250,7 @@ static int filldir_one(void * __buf, const char * name, int len,
static int get_name(struct vfsmount *mnt, struct dentry *dentry,
char *name, struct dentry *child)
{
const struct cred *cred = current_cred();
struct inode *dir = dentry->d_inode;
int error;
struct file *file;
@@ -263,7 +265,7 @@ static int get_name(struct vfsmount *mnt, struct dentry *dentry,
/*
* Open the directory ...
*/
file = dentry_open(dget(dentry), mntget(mnt), O_RDONLY);
file = dentry_open(dget(dentry), mntget(mnt), O_RDONLY, cred);
error = PTR_ERR(file);
if (IS_ERR(file))
goto out;