libtopo/common/zfs.c

b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh/*
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh *
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh * CDDL HEADER START
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh *
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh * The contents of this file are subject to the terms of the
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh * Common Development and Distribution License (the "License").
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh * You may not use this file except in compliance with the License.
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh *
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh * or http://www.opensolaris.org/os/licensing.
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh * See the License for the specific language governing permissions
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh * and limitations under the License.
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh *
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh * When distributing Covered Code, include this CDDL HEADER in each
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh * If applicable, add the following below this CDDL HEADER, with the
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh * fields enclosed by brackets "[]" replaced with your own identifying
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh * information: Portions Copyright [yyyy] [name of copyright owner]
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh *
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh * CDDL HEADER END
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh */
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh/*
f6e214c7418f43af38bd8c3a557e3d0a1d311cfaGavin Maltby * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
2227b8ad8ebd0984a34b696ce07145248700852bAlek Pinchuk * Copyright 2013 Nexenta Systems, Inc.  All rights reserved.
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh */
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh#include <stdio.h>
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh#include <stdlib.h>
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh#include <string.h>
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh#include <errno.h>
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh#include <ctype.h>
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh#include <alloca.h>
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh#include <limits.h>
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh#include <fm/topo_mod.h>
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh#include <sys/param.h>
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh#include <sys/systeminfo.h>
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh#include <sys/fm/protocol.h>
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh#include <sys/stat.h>
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh#include <topo_method.h>
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh#include <topo_subr.h>
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh#include <libzfs.h>
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh#include <zfs.h>
2227b8ad8ebd0984a34b696ce07145248700852bAlek Pinchuk#include <pthread.h>
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephhstatic int zfs_enum(topo_mod_t *, tnode_t *, const char *, topo_instance_t,
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh    topo_instance_t, void *, void *);
842727c2f41f01b380de4f5e787d905702870f23Chris Kirbystatic void zfs_rele(topo_mod_t *, tnode_t *);
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephhstatic int zfs_fmri_nvl2str(topo_mod_t *, tnode_t *, topo_version_t,
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh    nvlist_t *, nvlist_t **);
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephhconst topo_method_t zfs_methods[] = {
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh    { TOPO_METH_NVL2STR, TOPO_METH_NVL2STR_DESC, TOPO_METH_NVL2STR_VERSION,
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh        TOPO_STABILITY_INTERNAL, zfs_fmri_nvl2str },
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh    { NULL }
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh};
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephhstatic const topo_modops_t zfs_ops =
842727c2f41f01b380de4f5e787d905702870f23Chris Kirby    { zfs_enum, zfs_rele };
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephhstatic const topo_modinfo_t zfs_info =
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh    { ZFS, FM_FMRI_SCHEME_ZFS, ZFS_VERSION, &zfs_ops };
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh
2227b8ad8ebd0984a34b696ce07145248700852bAlek Pinchukstatic libzfs_handle_t *g_zfs = NULL;
2227b8ad8ebd0984a34b696ce07145248700852bAlek Pinchukstatic pthread_mutex_t g_lock = PTHREAD_MUTEX_INITIALIZER;
2227b8ad8ebd0984a34b696ce07145248700852bAlek Pinchukstatic int g_refcount = 0;
d5b8f72dcc21ae549bc00501dd26eeb2b94bf2edStephen Hanson
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephhint
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephhzfs_init(topo_mod_t *mod, topo_version_t version)
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh{
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh    /*
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh     * Turn on module debugging output
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh     */
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh    if (getenv("TOPOZFSDEBUG"))
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh        topo_mod_setdebug(mod);
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh    topo_mod_dprintf(mod, "initializing zfs builtin\n");
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh    if (version != ZFS_VERSION)
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh        return (topo_mod_seterrno(mod, EMOD_VER_NEW));
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh    if (topo_mod_register(mod, &zfs_info, TOPO_VERSION) != 0) {
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh        topo_mod_dprintf(mod, "failed to register zfs: "
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh            "%s\n", topo_mod_errmsg(mod));
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh        return (-1); /* mod errno already set */
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh    }
2227b8ad8ebd0984a34b696ce07145248700852bAlek Pinchuk
2227b8ad8ebd0984a34b696ce07145248700852bAlek Pinchuk    (void) pthread_mutex_lock(&g_lock);
2227b8ad8ebd0984a34b696ce07145248700852bAlek Pinchuk    if (g_refcount == 0) {
2227b8ad8ebd0984a34b696ce07145248700852bAlek Pinchuk        if ((g_zfs = libzfs_init()) == NULL) {
2227b8ad8ebd0984a34b696ce07145248700852bAlek Pinchuk            (void) pthread_mutex_unlock(&g_lock);
2227b8ad8ebd0984a34b696ce07145248700852bAlek Pinchuk            topo_mod_dprintf(mod, "libzfs_init() failed");
2227b8ad8ebd0984a34b696ce07145248700852bAlek Pinchuk            topo_mod_unregister(mod);
2227b8ad8ebd0984a34b696ce07145248700852bAlek Pinchuk            return (topo_mod_seterrno(mod, EMOD_UNKNOWN));
2227b8ad8ebd0984a34b696ce07145248700852bAlek Pinchuk        }
2227b8ad8ebd0984a34b696ce07145248700852bAlek Pinchuk    }
2227b8ad8ebd0984a34b696ce07145248700852bAlek Pinchuk    g_refcount++;
2227b8ad8ebd0984a34b696ce07145248700852bAlek Pinchuk    (void) pthread_mutex_unlock(&g_lock);
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh    return (0);
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh}
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephhvoid
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephhzfs_fini(topo_mod_t *mod)
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh{
2227b8ad8ebd0984a34b696ce07145248700852bAlek Pinchuk    (void) pthread_mutex_lock(&g_lock);
2227b8ad8ebd0984a34b696ce07145248700852bAlek Pinchuk    g_refcount--;
2227b8ad8ebd0984a34b696ce07145248700852bAlek Pinchuk    if (g_refcount == 0) {
ede7616dd3d88cda07ba148ab19e700804507747Stephen Hanson        libzfs_fini(g_zfs);
ede7616dd3d88cda07ba148ab19e700804507747Stephen Hanson        g_zfs = NULL;
ede7616dd3d88cda07ba148ab19e700804507747Stephen Hanson    }
2227b8ad8ebd0984a34b696ce07145248700852bAlek Pinchuk    (void) pthread_mutex_unlock(&g_lock);
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh    topo_mod_unregister(mod);
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh}
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh/*ARGSUSED*/
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephhint
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephhzfs_enum(topo_mod_t *mod, tnode_t *pnode, const char *name, topo_instance_t min,
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh    topo_instance_t max, void *notused1, void *notused2)
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh{
f6e214c7418f43af38bd8c3a557e3d0a1d311cfaGavin Maltby    /*
f6e214c7418f43af38bd8c3a557e3d0a1d311cfaGavin Maltby     * Methods are registered, but there is no enumeration.  Should
f6e214c7418f43af38bd8c3a557e3d0a1d311cfaGavin Maltby     * enumeration be added be sure to cater for global vs non-global
f6e214c7418f43af38bd8c3a557e3d0a1d311cfaGavin Maltby     * zones.
f6e214c7418f43af38bd8c3a557e3d0a1d311cfaGavin Maltby     */
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh    (void) topo_method_register(mod, pnode, zfs_methods);
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh    return (0);
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh}
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh/*ARGSUSED*/
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephhstatic void
842727c2f41f01b380de4f5e787d905702870f23Chris Kirbyzfs_rele(topo_mod_t *mp, tnode_t *node)
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh{
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh    topo_method_unregister_all(mp, node);
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh}
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephhtypedef struct cbdata {
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh    uint64_t    cb_guid;
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh    zpool_handle_t  *cb_pool;
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh} cbdata_t;
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephhstatic int
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephhfind_pool(zpool_handle_t *zhp, void *data)
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh{
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh    cbdata_t *cbp = data;
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh    if (zpool_get_prop_int(zhp, ZPOOL_PROP_GUID, NULL) == cbp->cb_guid) {
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh        cbp->cb_pool = zhp;
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh        return (1);
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh    }
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh    zpool_close(zhp);
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh    return (0);
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh}
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephhstatic ssize_t
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephhfmri_nvl2str(nvlist_t *nvl, char *buf, size_t buflen)
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh{
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh    uint64_t pool_guid, vdev_guid;
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh    cbdata_t cb;
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh    ssize_t len;
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh    const char *name;
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh    char guidbuf[64];
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh    (void) nvlist_lookup_uint64(nvl, FM_FMRI_ZFS_POOL, &pool_guid);
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh    /*
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh     * Attempt to convert the pool guid to a name.
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh     */
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh    cb.cb_guid = pool_guid;
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh    cb.cb_pool = NULL;
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh
2227b8ad8ebd0984a34b696ce07145248700852bAlek Pinchuk    if (zpool_iter(g_zfs, find_pool, &cb) == 1) {
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh        name = zpool_get_name(cb.cb_pool);
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh    } else {
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh        (void) snprintf(guidbuf, sizeof (guidbuf), "%llx", pool_guid);
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh        name = guidbuf;
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh    }
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh    if (nvlist_lookup_uint64(nvl, FM_FMRI_ZFS_VDEV, &vdev_guid) == 0)
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh        len = snprintf(buf, buflen, "%s://pool=%s/vdev=%llx",
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh            FM_FMRI_SCHEME_ZFS, name, vdev_guid);
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh    else
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh        len = snprintf(buf, buflen, "%s://pool=%s",
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh            FM_FMRI_SCHEME_ZFS, name);
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh    if (cb.cb_pool)
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh        zpool_close(cb.cb_pool);
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh    return (len);
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh}
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh/*ARGSUSED*/
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephhstatic int
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephhzfs_fmri_nvl2str(topo_mod_t *mod, tnode_t *node, topo_version_t version,
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh    nvlist_t *nvl, nvlist_t **out)
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh{
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh    ssize_t len;
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh    char *name = NULL;
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh    nvlist_t *fmristr;
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh    if (version > TOPO_METH_NVL2STR_VERSION)
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh        return (topo_mod_seterrno(mod, EMOD_VER_NEW));
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh    if ((len = fmri_nvl2str(nvl, NULL, 0)) == 0 ||
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh        (name = topo_mod_alloc(mod, len + 1)) == NULL ||
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh        fmri_nvl2str(nvl, name, len + 1) == 0) {
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh        if (name != NULL)
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh            topo_mod_free(mod, name, len + 1);
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh        return (topo_mod_seterrno(mod, EMOD_FMRI_NVL));
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh    }
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh    if (topo_mod_nvalloc(mod, &fmristr, NV_UNIQUE_NAME) != 0) {
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh        topo_mod_free(mod, name, len + 1);
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh        return (topo_mod_seterrno(mod, EMOD_FMRI_NVL));
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh    }
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh    if (nvlist_add_string(fmristr, "fmri-string", name) != 0) {
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh        topo_mod_free(mod, name, len + 1);
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh        nvlist_free(fmristr);
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh        return (topo_mod_seterrno(mod, EMOD_FMRI_NVL));
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh    }
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh    topo_mod_free(mod, name, len + 1);
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh    *out = fmristr;
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh    return (0);
b7d3956b92a285d8dac2c7f5f7e28d2ef5347ef8stephh}