Author: pjd
Date: Fri Oct 21 14:00:48 2011
New Revision: 226617
URL: http://svn.freebsd.org/changeset/base/226617
Log:
zfs vdev_file_io_start: validate vdev before using vdev_tsd
vdev_tsd can be NULL for certain vdev states.
At least in userland testing with ztest.
Submitted by: avg
MFC after: 3 days
Modified:
head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_file.c
Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_file.c
==============================================================================
--- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_file.c Fri Oct
21 13:56:17 2011 (r226616)
+++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_file.c Fri Oct
21 14:00:48 2011 (r226617)
@@ -153,17 +153,19 @@ static int
vdev_file_io_start(zio_t *zio)
{
vdev_t *vd = zio->io_vd;
- vdev_file_t *vf = vd->vdev_tsd;
- vnode_t *vp = vf->vf_vnode;
+ vdev_file_t *vf;
+ vnode_t *vp;
ssize_t resid;
- if (zio->io_type == ZIO_TYPE_IOCTL) {
- /* XXPOLICY */
- if (!vdev_readable(vd)) {
- zio->io_error = ENXIO;
- return (ZIO_PIPELINE_CONTINUE);
- }
+ if (!vdev_readable(vd)) {
+ zio->io_error = ENXIO;
+ return (ZIO_PIPELINE_CONTINUE);
+ }
+
+ vf = vd->vdev_tsd;
+ vp = vf->vf_vnode;
+ if (zio->io_type == ZIO_TYPE_IOCTL) {
switch (zio->io_cmd) {
case DKIOCFLUSHWRITECACHE:
zio->io_error = VOP_FSYNC(vp, FSYNC | FDSYNC,
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