/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 2006, 2010, Oracle and/or its affiliates. All rights reserved.
*/
/*
* Copyright 2010 Nexenta Systems, Inc. All rights reserved.
*/
#include <fm/fmd_fmri.h>
#include <strings.h>
#include <libzfs.h>
typedef struct cbdata {
uint64_t cb_guid;
zpool_handle_t *cb_pool;
} cbdata_t;
libzfs_handle_t *g_zfs;
static int
find_pool(zpool_handle_t *zhp, void *data)
{
cbdata_t *cbp = data;
if (zpool_get_prop_int(zhp, ZPOOL_PROP_GUID, NULL) == cbp->cb_guid) {
cbp->cb_pool = zhp;
return (1);
}
zpool_close(zhp);
return (0);
}
ssize_t
fmd_fmri_nvl2str(nvlist_t *nvl, char *buf, size_t buflen)
{
uint64_t pool_guid, vdev_guid;
cbdata_t cb;
ssize_t len;
const char *name;
char guidbuf[64];
(void) nvlist_lookup_uint64(nvl, FM_FMRI_ZFS_POOL, &pool_guid);
/*
* Attempt to convert the pool guid to a name.
*/
cb.cb_guid = pool_guid;
cb.cb_pool = NULL;
if (zpool_iter(g_zfs, find_pool, &cb) == 1) {
name = zpool_get_name(cb.cb_pool);
} else {
(void) snprintf(guidbuf, sizeof (guidbuf), "%llx", pool_guid);
name = guidbuf;
}
if (nvlist_lookup_uint64(nvl, FM_FMRI_ZFS_VDEV, &vdev_guid) == 0)
len = snprintf(buf, buflen, "%s://pool=%s/vdev=%llx",
FM_FMRI_SCHEME_ZFS, name, vdev_guid);
else
len = snprintf(buf, buflen, "%s://pool=%s",
FM_FMRI_SCHEME_ZFS, name);
if (cb.cb_pool)
zpool_close(cb.cb_pool);
return (len);
}
static nvlist_t *
find_vdev_iter(nvlist_t *nv, uint64_t search)
{
uint_t c, children;
nvlist_t **child;
uint64_t guid;
nvlist_t *ret;
(void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, &guid);
if (search == guid)
return (nv);
if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN,
&child, &children) == 0) {
for (c = 0; c < children; c++)
if ((ret = find_vdev_iter(child[c], search)) != 0)
return (ret);
}
if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_L2CACHE,
&child, &children) == 0) {
for (c = 0; c < children; c++)
if ((ret = find_vdev_iter(child[c], search)) != 0)
return (ret);
}
if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_SPARES,
&child, &children) == 0) {
for (c = 0; c < children; c++)
if ((ret = find_vdev_iter(child[c], search)) != 0)
return (ret);
}
return (NULL);
}
static nvlist_t *
find_vdev(zpool_handle_t *zhp, uint64_t guid)
{
nvlist_t *config, *nvroot;
config = zpool_get_config(zhp, NULL);
(void) nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, &nvroot);
return (find_vdev_iter(nvroot, guid));
}
int
fmd_fmri_present(nvlist_t *nvl)
{
uint64_t pool_guid, vdev_guid;
cbdata_t cb;
int ret;
(void) nvlist_lookup_uint64(nvl, FM_FMRI_ZFS_POOL, &pool_guid);
cb.cb_guid = pool_guid;
cb.cb_pool = NULL;
if (zpool_iter(g_zfs, find_pool, &cb) != 1)
return (0);
if (nvlist_lookup_uint64(nvl, FM_FMRI_ZFS_VDEV, &vdev_guid) != 0) {
zpool_close(cb.cb_pool);
return (1);
}
ret = (find_vdev(cb.cb_pool, vdev_guid) != NULL);
zpool_close(cb.cb_pool);
return (ret);
}
int
fmd_fmri_replaced(nvlist_t *nvl)
{
uint64_t pool_guid, vdev_guid;
cbdata_t cb;
int ret;
(void) nvlist_lookup_uint64(nvl, FM_FMRI_ZFS_POOL, &pool_guid);
cb.cb_guid = pool_guid;
cb.cb_pool = NULL;
if (zpool_iter(g_zfs, find_pool, &cb) != 1)
return (FMD_OBJ_STATE_NOT_PRESENT);
if (nvlist_lookup_uint64(nvl, FM_FMRI_ZFS_VDEV, &vdev_guid) != 0) {
zpool_close(cb.cb_pool);
return (FMD_OBJ_STATE_STILL_PRESENT);
}
ret = (find_vdev(cb.cb_pool, vdev_guid) != NULL) ?
FMD_OBJ_STATE_STILL_PRESENT : FMD_OBJ_STATE_NOT_PRESENT;
zpool_close(cb.cb_pool);
return (ret);
}
int
fmd_fmri_unusable(nvlist_t *nvl)
{
uint64_t pool_guid, vdev_guid;
cbdata_t cb;
nvlist_t *vd;
int ret;
(void) nvlist_lookup_uint64(nvl, FM_FMRI_ZFS_POOL, &pool_guid);
cb.cb_guid = pool_guid;
cb.cb_pool = NULL;
if (zpool_iter(g_zfs, find_pool, &cb) != 1)
return (1);
if (nvlist_lookup_uint64(nvl, FM_FMRI_ZFS_VDEV, &vdev_guid) != 0) {
ret = (zpool_get_state(cb.cb_pool) == POOL_STATE_UNAVAIL);
zpool_close(cb.cb_pool);
return (ret);
}
vd = find_vdev(cb.cb_pool, vdev_guid);
if (vd == NULL) {
ret = 1;
} else {
vdev_stat_t *vs;
uint_t c;
(void) nvlist_lookup_uint64_array(vd, ZPOOL_CONFIG_VDEV_STATS,
(uint64_t **)&vs, &c);
ret = (vs->vs_state < VDEV_STATE_DEGRADED);
}
zpool_close(cb.cb_pool);
return (ret);
}
int
fmd_fmri_init(void)
{
g_zfs = libzfs_init();
if (g_zfs == NULL)
return (-1);
else
return (0);
}
void
fmd_fmri_fini(void)
{
if (g_zfs)
libzfs_fini(g_zfs);
}