1 files changed, 203 insertions, 0 deletions
diff --git a/usr/src/lib/fm/topo/libtopo/common/zfs.c b/usr/src/lib/fm/topo/libtopo/common/zfs.c
new file mode 100644
index 0000000000..b7bcda4974
--- /dev/null
+++ b/usr/src/lib/fm/topo/libtopo/common/zfs.c
@@ -0,0 +1,203 @@
+/*
+ *
+ * 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 2008 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#pragma ident	"%Z%%M%	%I%	%E% SMI"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <ctype.h>
+#include <alloca.h>
+#include <limits.h>
+#include <fm/topo_mod.h>
+#include <sys/param.h>
+#include <sys/systeminfo.h>
+#include <sys/fm/protocol.h>
+#include <sys/stat.h>
+
+#include <topo_method.h>
+#include <topo_subr.h>
+#include <libzfs.h>
+#include <zfs.h>
+
+static int zfs_enum(topo_mod_t *, tnode_t *, const char *, topo_instance_t,
+    topo_instance_t, void *, void *);
+static void zfs_release(topo_mod_t *, tnode_t *);
+static int zfs_fmri_nvl2str(topo_mod_t *, tnode_t *, topo_version_t,
+    nvlist_t *, nvlist_t **);
+
+const topo_method_t zfs_methods[] = {
+	{ TOPO_METH_NVL2STR, TOPO_METH_NVL2STR_DESC, TOPO_METH_NVL2STR_VERSION,
+	    TOPO_STABILITY_INTERNAL, zfs_fmri_nvl2str },
+	{ NULL }
+};
+
+static const topo_modops_t zfs_ops =
+	{ zfs_enum, zfs_release };
+static const topo_modinfo_t zfs_info =
+	{ ZFS, FM_FMRI_SCHEME_ZFS, ZFS_VERSION, &zfs_ops };
+
+int
+zfs_init(topo_mod_t *mod, topo_version_t version)
+{
+	/*
+	 * Turn on module debugging output
+	 */
+	if (getenv("TOPOZFSDEBUG"))
+		topo_mod_setdebug(mod);
+
+	topo_mod_dprintf(mod, "initializing zfs builtin\n");
+
+	if (version != ZFS_VERSION)
+		return (topo_mod_seterrno(mod, EMOD_VER_NEW));
+
+	if (topo_mod_register(mod, &zfs_info, TOPO_VERSION) != 0) {
+		topo_mod_dprintf(mod, "failed to register zfs: "
+		    "%s\n", topo_mod_errmsg(mod));
+		return (-1); /* mod errno already set */
+	}
+
+	return (0);
+}
+
+void
+zfs_fini(topo_mod_t *mod)
+{
+	topo_mod_unregister(mod);
+}
+
+
+/*ARGSUSED*/
+int
+zfs_enum(topo_mod_t *mod, tnode_t *pnode, const char *name, topo_instance_t min,
+    topo_instance_t max, void *notused1, void *notused2)
+{
+	(void) topo_method_register(mod, pnode, zfs_methods);
+	return (0);
+}
+
+/*ARGSUSED*/
+static void
+zfs_release(topo_mod_t *mp, tnode_t *node)
+{
+	topo_method_unregister_all(mp, node);
+}
+
+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);
+}
+
+static ssize_t
+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);
+}
+
+/*ARGSUSED*/
+static int
+zfs_fmri_nvl2str(topo_mod_t *mod, tnode_t *node, topo_version_t version,
+    nvlist_t *nvl, nvlist_t **out)
+{
+	ssize_t len;
+	char *name = NULL;
+	nvlist_t *fmristr;
+
+	if (version > TOPO_METH_NVL2STR_VERSION)
+		return (topo_mod_seterrno(mod, EMOD_VER_NEW));
+
+	if ((len = fmri_nvl2str(nvl, NULL, 0)) == 0 ||
+	    (name = topo_mod_alloc(mod, len + 1)) == NULL ||
+	    fmri_nvl2str(nvl, name, len + 1) == 0) {
+		if (name != NULL)
+			topo_mod_free(mod, name, len + 1);
+		return (topo_mod_seterrno(mod, EMOD_FMRI_NVL));
+	}
+
+	if (topo_mod_nvalloc(mod, &fmristr, NV_UNIQUE_NAME) != 0) {
+		topo_mod_free(mod, name, len + 1);
+		return (topo_mod_seterrno(mod, EMOD_FMRI_NVL));
+	}
+	if (nvlist_add_string(fmristr, "fmri-string", name) != 0) {
+		topo_mod_free(mod, name, len + 1);
+		nvlist_free(fmristr);
+		return (topo_mod_seterrno(mod, EMOD_FMRI_NVL));
+	}
+	topo_mod_free(mod, name, len + 1);
+	*out = fmristr;
+
+	return (0);
+}