audit: add refused symlink to audit_names

Audit link denied events for symlinks had duplicate PATH records rather
than just updating the existing PATH record.  Update the symlink's PATH
record with the current dentry and inode information.

See: https://github.com/linux-audit/audit-kernel/issues/21

Signed-off-by: Richard Guy Briggs <rgb@redhat.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>

diff --git a/fs/namei.c b/fs/namei.c
index e3682bb72cb5d6afcde7017d05417840332e3f28..5f8e8e2732e16503e427243b599fda7e43f844b4 100644 (file)
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -945,6 +945,7 @@ static inline int may_follow_link(struct nameidata *nd)
        if (nd->flags & LOOKUP_RCU)
                return -ECHILD;
 
+       audit_inode(nd->name, nd->stack[0].link.dentry, 0);
        audit_log_link_denied("follow_link");
        return -EACCES;
 }