[src/trunk]: src/sys/fs/sysvbfs Don't change a read-only file system.

[pooka <pooka%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/94903b0b99ae
branches:  trunk
changeset: 786849:94903b0b99ae
user:      pooka <pooka%NetBSD.org@localhost>
date:      Wed May 15 16:44:03 2013 +0000

description:
Don't change a read-only file system.

diffstat:

 sys/fs/sysvbfs/sysvbfs_vnops.c |  12 ++++++++++--
 1 files changed, 10 insertions(+), 2 deletions(-)

diffs (47 lines):

diff -r 6b941d6a1ef8 -r 94903b0b99ae sys/fs/sysvbfs/sysvbfs_vnops.c
--- a/sys/fs/sysvbfs/sysvbfs_vnops.c    Wed May 15 16:00:04 2013 +0000
+++ b/sys/fs/sysvbfs/sysvbfs_vnops.c    Wed May 15 16:44:03 2013 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: sysvbfs_vnops.c,v 1.47 2013/03/18 19:35:40 plunky Exp $        */
+/*     $NetBSD: sysvbfs_vnops.c,v 1.48 2013/05/15 16:44:03 pooka Exp $ */
 
 /*-
  * Copyright (c) 2004 The NetBSD Foundation, Inc.
@@ -30,7 +30,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: sysvbfs_vnops.c,v 1.47 2013/03/18 19:35:40 plunky Exp $");
+__KERNEL_RCSID(0, "$NetBSD: sysvbfs_vnops.c,v 1.48 2013/05/15 16:44:03 pooka Exp $");
 
 #include <sys/param.h>
 #include <sys/kernel.h>
@@ -218,6 +218,10 @@
        struct bfs_fileattr attr;
 
        DPRINTF("%s:\n", __func__);
+
+       if (v->v_mount->mnt_flag & MNT_RDONLY)
+               goto out;
+
        uvm_vnp_setsize(v, bnode->size);
 
        memset(&attr, 0xff, sizeof attr);       /* Set VNOVAL all */
@@ -231,6 +235,7 @@
 
        VOP_FSYNC(a->a_vp, a->a_cred, FSYNC_WAIT, 0, 0);
 
+ out:
        return 0;
 }
 
@@ -877,6 +882,9 @@
        struct sysvbfs_node *bnode = vp->v_data;
        struct bfs_fileattr attr;
 
+       if (vp->v_mount->mnt_flag & MNT_RDONLY)
+               return 0;
+
        DPRINTF("%s:\n", __func__);
        memset(&attr, 0xff, sizeof attr);       /* Set VNOVAL all */
        if (bnode->update_atime) {