ubifs: Add CONFIG_UBIFS_FS_SECURITY to disable/enable security labels

When write syscall is called, every time security label is searched to
determine that file's privileges should be changed.
If LSM(Linux Security Model) is not used, this is useless.

So introduce CONFIG_UBIFS_SECURITY to disable security labels. it's default
value is "y".

Signed-off-by: Hyunchul Lee <cheol.lee@lge.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
(cherry picked from commit 8326c1eec2449f0e868f7b19a5fa7bfa0386ab48)

1 files changed, 11 insertions, 1 deletions

diff --git a/fs/ubifs/ubifs.h b/fs/ubifs/ubifs.h
index a5697de763f5..f4238c940fb7 100644
--- a/fs/ubifs/ubifs.h
+++ b/fs/ubifs/ubifs.h
@@ -1762,8 +1762,18 @@ ssize_t ubifs_getxattr(struct dentry *dentry, const char *name, void *buf,
 		       size_t size);
 ssize_t ubifs_listxattr(struct dentry *dentry, char *buffer, size_t size);
 int ubifs_removexattr(struct dentry *dentry, const char *name);
-int ubifs_init_security(struct inode *dentry, struct inode *inode,
+
+#ifdef CONFIG_UBIFS_FS_SECURITY
+extern int ubifs_init_security(struct inode *dentry, struct inode *inode,
 			const struct qstr *qstr);
+#else
+static inline int ubifs_init_security(struct inode *dentry,
+			struct inode *inode, const struct qstr *qstr)
+{
+	return 0;
+}
+#endif
+
 
 /* super.c */
 struct inode *ubifs_iget(struct super_block *sb, unsigned long inum);