SELinux: do not clear f_op when removing entries
Do not clear f_op when removing entries since it isn't safe to do.
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: James Morris <jmorris@namei.org>
diff --git a/security/selinux/selinuxfs.c b/security/selinux/selinuxfs.c
index f5f3e6d..ac6fe99 100644
--- a/security/selinux/selinuxfs.c
+++ b/security/selinux/selinuxfs.c
@@ -838,10 +838,6 @@
ret = -EFAULT;
- /* check to see if this file has been deleted */
- if (!filep->f_op)
- goto out;
-
if (count > PAGE_SIZE) {
ret = -EINVAL;
goto out;
@@ -882,10 +878,6 @@
if (length)
goto out;
- /* check to see if this file has been deleted */
- if (!filep->f_op)
- goto out;
-
if (count >= PAGE_SIZE) {
length = -ENOMEM;
goto out;
@@ -940,10 +932,6 @@
if (length)
goto out;
- /* check to see if this file has been deleted */
- if (!filep->f_op)
- goto out;
-
if (count >= PAGE_SIZE) {
length = -ENOMEM;
goto out;
@@ -982,11 +970,9 @@
.write = sel_commit_bools_write,
};
-/* partial revoke() from fs/proc/generic.c proc_kill_inodes */
static void sel_remove_entries(struct dentry *de)
{
- struct list_head *p, *node;
- struct super_block *sb = de->d_sb;
+ struct list_head *node;
spin_lock(&dcache_lock);
node = de->d_subdirs.next;
@@ -1006,18 +992,6 @@
}
spin_unlock(&dcache_lock);
-
- file_list_lock();
- list_for_each(p, &sb->s_files) {
- struct file * filp = list_entry(p, struct file, f_u.fu_list);
- struct dentry * dentry = filp->f_path.dentry;
-
- if (dentry->d_parent != de) {
- continue;
- }
- filp->f_op = NULL;
- }
- file_list_unlock();
}
#define BOOL_DIR_NAME "booleans"