kern/107439: commit references a PR

[dfilter service]

The following reply was made to PR kern/107439; it has been noted by GNATS.

From: dfilter at FreeBSD.ORG (dfilter service)
To: bug-followup at FreeBSD.org
Cc:  
Subject: Re: kern/107439: commit references a PR
Date: Fri,  2 Apr 2010 14:03:56 +0000 (UTC)

 Author: kib
 Date: Fri Apr  2 14:03:43 2010
 New Revision: 206094
 URL: http://svn.freebsd.org/changeset/base/206094
 
 Log:
   Supply default implementation of VOP_RENAME() that does neccessary
   unlocks and unreferences for argument vnodes, as expected by
   kern_renameat(9), and returns EOPNOTSUPP. This fixes locks and
   reference leaks when rename is attempted on fs that does not
   implement rename.
   
   PR:	kern/107439
   Based on submission by:	Mikolaj Golub <to.my.trociny gmail com>
   Tested by:	Mikolaj Golub
   MFC after:	1 week
 
 Modified:
   head/sys/kern/vfs_default.c
 
 Modified: head/sys/kern/vfs_default.c
 ==============================================================================
 --- head/sys/kern/vfs_default.c	Fri Apr  2 14:03:01 2010	(r206093)
 +++ head/sys/kern/vfs_default.c	Fri Apr  2 14:03:43 2010	(r206094)
 @@ -67,6 +67,7 @@ __FBSDID("$FreeBSD$");
  #include <vm/vnode_pager.h>
  
  static int	vop_nolookup(struct vop_lookup_args *);
 +static int	vop_norename(struct vop_rename_args *);
  static int	vop_nostrategy(struct vop_strategy_args *);
  static int	get_next_dirent(struct vnode *vp, struct dirent **dpp,
  				char *dirbuf, int dirbuflen, off_t *off,
 @@ -113,6 +114,7 @@ struct vop_vector default_vnodeops = {
  	.vop_poll =		vop_nopoll,
  	.vop_putpages =		vop_stdputpages,
  	.vop_readlink =		VOP_EINVAL,
 +	.vop_rename =		vop_norename,
  	.vop_revoke =		VOP_PANIC,
  	.vop_strategy =		vop_nostrategy,
  	.vop_unlock =		vop_stdunlock,
 @@ -206,6 +208,20 @@ vop_nolookup(ap)
  }
  
  /*
 + * vop_norename:
 + *
 + * Handle unlock and reference counting for arguments of vop_rename
 + * for filesystems that do not implement rename operation.
 + */
 +static int
 +vop_norename(struct vop_rename_args *ap)
 +{
 +
 +	vop_rename_fail(ap);
 +	return (EOPNOTSUPP);
 +}
 +
 +/*
   *	vop_nostrategy:
   *
   *	Strategy routine for VFS devices that have none.
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