svn commit: r366016 - head/sys/kern

[Konstantin Belousov]

Author: kib
Date: Tue Sep 22 21:59:18 2020
New Revision: 366016
URL: https://svnweb.freebsd.org/changeset/base/366016

Log:
  lookup: Track last lookup component if it is directory.
  
  This makes open("/a/../a", O_BENEATH) with cwd == "/a" work.
  
  Reviewed by:	markj
  Reported and tested by:	pho
  Sponsored by:	The FreeBSD Foundation
  MFC after:	1 week
  Differential revision:	https://reviews.freebsd.org/D25886

Modified:
  head/sys/kern/vfs_lookup.c

Modified: head/sys/kern/vfs_lookup.c
==============================================================================
--- head/sys/kern/vfs_lookup.c	Tue Sep 22 21:54:30 2020	(r366015)
+++ head/sys/kern/vfs_lookup.c	Tue Sep 22 21:59:18 2020	(r366016)
@@ -1248,6 +1248,8 @@ success:
 			goto bad2;
 		}
 	}
+	if (ndp->ni_vp != NULL && ndp->ni_vp->v_type == VDIR)
+		nameicap_tracker_add(ndp, ndp->ni_vp);
 	return (0);
 
 bad2: