New helper: path_is_under(path1, path2)
Analog of is_subdir for vfsmount,dentry pairs, moved from audit_tree.c
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/include/linux/fs.h b/include/linux/fs.h
index d443c9d..8d53bc1 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2126,6 +2126,7 @@
/* fs/dcache.c -- generic fs support functions */
extern int is_subdir(struct dentry *, struct dentry *);
+extern int path_is_under(struct path *, struct path *);
extern ino_t find_inode_number(struct dentry *, struct qstr *);
#include <linux/err.h>