svn commit: r263355 - stable/9/sys/kern

[Konstantin Belousov]

Author: kib
Date: Wed Mar 19 12:57:13 2014
New Revision: 263355
URL: http://svnweb.freebsd.org/changeset/base/263355

Log:
  MFC r263079:
  The auio structure is only initialized when the vnode is symlink,
  avoid reading from it otherwise.

Modified:
  stable/9/sys/kern/vfs_syscalls.c
Directory Properties:
  stable/9/sys/   (props changed)

Modified: stable/9/sys/kern/vfs_syscalls.c
==============================================================================
--- stable/9/sys/kern/vfs_syscalls.c	Wed Mar 19 12:55:57 2014	(r263354)
+++ stable/9/sys/kern/vfs_syscalls.c	Wed Mar 19 12:57:13 2014	(r263355)
@@ -2719,10 +2719,10 @@ kern_readlinkat(struct thread *td, int f
 		auio.uio_td = td;
 		auio.uio_resid = count;
 		error = VOP_READLINK(vp, &auio, td->td_ucred);
+		td->td_retval[0] = count - auio.uio_resid;
 	}
 	vput(vp);
 	VFS_UNLOCK_GIANT(vfslocked);
-	td->td_retval[0] = count - auio.uio_resid;
 	return (error);
 }