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From: Edward Tomasz Napierala <trasz@FreeBSD.org>
Date: Sat, 27 Mar 2010 18:09:40 +0000 (UTC)
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Subject: svn commit: r205770 - stable/8/sys/kern
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Author: trasz
Date: Sat Mar 27 18:09:40 2010
New Revision: 205770
URL: http://svn.freebsd.org/changeset/base/205770

Log:
  MFC r200273:
  
  Don't add VAPPEND if the file is not being opened for writing.  Note that this
  only affects cases where open(2) is being used improperly - i.e. when the user
  specifies O_APPEND without O_WRONLY or O_RDWR.
  
  Reviewed by:	rwatson

Modified:
  stable/8/sys/kern/vfs_syscalls.c
  stable/8/sys/kern/vfs_vnops.c
Directory Properties:
  stable/8/sys/   (props changed)
  stable/8/sys/amd64/include/xen/   (props changed)
  stable/8/sys/cddl/contrib/opensolaris/   (props changed)
  stable/8/sys/contrib/dev/acpica/   (props changed)
  stable/8/sys/contrib/pf/   (props changed)
  stable/8/sys/dev/xen/xenpci/   (props changed)

Modified: stable/8/sys/kern/vfs_syscalls.c
==============================================================================
--- stable/8/sys/kern/vfs_syscalls.c	Sat Mar 27 18:08:14 2010	(r205769)
+++ stable/8/sys/kern/vfs_syscalls.c	Sat Mar 27 18:09:40 2010	(r205770)
@@ -4436,7 +4436,7 @@ fhopen(td, uap)
 	}
 	if (fmode & FREAD)
 		accmode |= VREAD;
-	if (fmode & O_APPEND)
+	if ((fmode & O_APPEND) && (fmode & FWRITE))
 		accmode |= VAPPEND;
 #ifdef MAC
 	error = mac_vnode_check_open(td->td_ucred, vp, accmode);

Modified: stable/8/sys/kern/vfs_vnops.c
==============================================================================
--- stable/8/sys/kern/vfs_vnops.c	Sat Mar 27 18:08:14 2010	(r205769)
+++ stable/8/sys/kern/vfs_vnops.c	Sat Mar 27 18:09:40 2010	(r205770)
@@ -212,7 +212,7 @@ restart:
 		accmode |= VREAD;
 	if (fmode & FEXEC)
 		accmode |= VEXEC;
-	if (fmode & O_APPEND)
+	if ((fmode & O_APPEND) && (fmode & FWRITE))
 		accmode |= VAPPEND;
 #ifdef MAC
 	error = mac_vnode_check_open(cred, vp, accmode);