CVS commit: src

[Bill Studenmund <wrstuden%netbsd.org@localhost>]

Module Name:    src
Committed By:   wrstuden
Date:           Fri Feb 26 23:38:56 UTC 1999

Modified Files:
        src/sys/kern: exec_script.c kern_exec.c vfs_vnops.c vnode_if.src
        src/sys/miscfs/union: union_subr.c
Log Message:
Modify VOP_CLOSE vnode op to always take a locked vnode. Change vn_close
to pass down a locked node. Modify union_copyup() to call VOP_CLOSE
locked nodes.

Also fix a bug in union_copyup() where a lock on the lower vnode would
only be released if VOP_OPEN didn't fail.