switch dentry_open() to struct path, make it grab references itself

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

3 files changed, 5 insertions, 6 deletions

diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index 372ec6502aa..e423f5fe67f 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -2157,8 +2157,7 @@ static inline void flush_unauthorized_files(const struct cred *cred,
                                                 get_file(devnull);
                                         } else {
                                                 devnull = dentry_open(
-                                                        dget(selinux_null),
-                                                        mntget(selinuxfs_mount),
+                                                        &selinux_null,
                                                         O_RDWR, cred);
                                                 if (IS_ERR(devnull)) {
                                                         devnull = NULL;
diff --git a/security/selinux/include/security.h b/security/selinux/include/security.h
index dde2005407a..6d3885165d1 100644
--- a/security/selinux/include/security.h
+++ b/security/selinux/include/security.h
@@ -221,7 +221,7 @@ extern void selinux_status_update_policyload(int seqno);
 extern void selinux_complete_init(void);
 extern int selinux_disable(void);
 extern void exit_sel_fs(void);
-extern struct dentry *selinux_null;
+extern struct path selinux_null;
 extern struct vfsmount *selinuxfs_mount;
 extern void selnl_notify_setenforce(int val);
 extern void selnl_notify_policyload(u32 seqno);
diff --git a/security/selinux/selinuxfs.c b/security/selinux/selinuxfs.c
index 3ad29025128..298e695d682 100644
--- a/security/selinux/selinuxfs.c
+++ b/security/selinux/selinuxfs.c
@@ -1297,7 +1297,7 @@ out:
 
 #define NULL_FILE_NAME "null"
 
-struct dentry *selinux_null;
+struct path selinux_null;
 
 static ssize_t sel_read_avc_cache_threshold(struct file *filp, char __user *buf,
                                             size_t count, loff_t *ppos)
@@ -1838,7 +1838,7 @@ static int sel_fill_super(struct super_block *sb, void *data, int silent)
 
         init_special_inode(inode, S_IFCHR | S_IRUGO | S_IWUGO, MKDEV(MEM_MAJOR, 3));
         d_add(dentry, inode);
-        selinux_null = dentry;
+        selinux_null.dentry = dentry;
 
         dentry = sel_make_dir(sb->s_root, "avc", &sel_last_ino);
         if (IS_ERR(dentry)) {
@@ -1912,7 +1912,7 @@ static int __init init_sel_fs(void)
                 return err;
         }
 
-        selinuxfs_mount = kern_mount(&sel_fs_type);
+        selinux_null.mnt = selinuxfs_mount = kern_mount(&sel_fs_type);
         if (IS_ERR(selinuxfs_mount)) {
                 printk(KERN_ERR "selinuxfs:  could not mount!\n");
                 err = PTR_ERR(selinuxfs_mount);