1 files changed, 0 insertions, 455 deletions
diff --git a/lib/libzfs/libzfs_config.c b/lib/libzfs/libzfs_config.c
deleted file mode 100644
index 9d704e4303ff..000000000000
--- a/lib/libzfs/libzfs_config.c
+++ /dev/null
@@ -1,455 +0,0 @@
-// SPDX-License-Identifier: CDDL-1.0
-/*
- * 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 https://opensource.org/licenses/CDDL-1.0.
- * 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 2009 Sun Microsystems, Inc.  All rights reserved.
- * Use is subject to license terms.
- */
-
-/*
- * Copyright (c) 2012 by Delphix. All rights reserved.
- * Copyright (c) 2015 by Syneto S.R.L. All rights reserved.
- * Copyright 2016 Nexenta Systems, Inc.
- */
-
-/*
- * The pool configuration repository is stored in /etc/zfs/zpool.cache as a
- * single packed nvlist.  While it would be nice to just read in this
- * file from userland, this wouldn't work from a local zone.  So we have to have
- * a zpool ioctl to return the complete configuration for all pools.  In the
- * global zone, this will be identical to reading the file and unpacking it in
- * userland.
- */
-
-#include <errno.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <stddef.h>
-#include <string.h>
-#include <unistd.h>
-#include <libintl.h>
-#include <libuutil.h>
-
-#include "libzfs_impl.h"
-
-typedef struct config_node {
-	char		*cn_name;
-	nvlist_t	*cn_config;
-	uu_avl_node_t	cn_avl;
-} config_node_t;
-
-static int
-config_node_compare(const void *a, const void *b, void *unused)
-{
-	(void) unused;
-	const config_node_t *ca = (config_node_t *)a;
-	const config_node_t *cb = (config_node_t *)b;
-
-	int ret = strcmp(ca->cn_name, cb->cn_name);
-
-	if (ret < 0)
-		return (-1);
-	else if (ret > 0)
-		return (1);
-	else
-		return (0);
-}
-
-void
-namespace_clear(libzfs_handle_t *hdl)
-{
-	if (hdl->libzfs_ns_avl) {
-		config_node_t *cn;
-		void *cookie = NULL;
-
-		while ((cn = uu_avl_teardown(hdl->libzfs_ns_avl,
-		    &cookie)) != NULL) {
-			nvlist_free(cn->cn_config);
-			free(cn->cn_name);
-			free(cn);
-		}
-
-		uu_avl_destroy(hdl->libzfs_ns_avl);
-		hdl->libzfs_ns_avl = NULL;
-	}
-
-	if (hdl->libzfs_ns_avlpool) {
-		uu_avl_pool_destroy(hdl->libzfs_ns_avlpool);
-		hdl->libzfs_ns_avlpool = NULL;
-	}
-}
-
-/*
- * Loads the pool namespace, or re-loads it if the cache has changed.
- */
-static int
-namespace_reload(libzfs_handle_t *hdl)
-{
-	nvlist_t *config;
-	config_node_t *cn;
-	nvpair_t *elem;
-	zfs_cmd_t zc = {"\0"};
-	void *cookie;
-
-	if (hdl->libzfs_ns_gen == 0) {
-		/*
-		 * This is the first time we've accessed the configuration
-		 * cache.  Initialize the AVL tree and then fall through to the
-		 * common code.
-		 */
-		if ((hdl->libzfs_ns_avlpool = uu_avl_pool_create("config_pool",
-		    sizeof (config_node_t),
-		    offsetof(config_node_t, cn_avl),
-		    config_node_compare, UU_DEFAULT)) == NULL)
-			return (no_memory(hdl));
-
-		if ((hdl->libzfs_ns_avl = uu_avl_create(hdl->libzfs_ns_avlpool,
-		    NULL, UU_DEFAULT)) == NULL)
-			return (no_memory(hdl));
-	}
-
-	zcmd_alloc_dst_nvlist(hdl, &zc, 0);
-
-	for (;;) {
-		zc.zc_cookie = hdl->libzfs_ns_gen;
-		if (zfs_ioctl(hdl, ZFS_IOC_POOL_CONFIGS, &zc) != 0) {
-			switch (errno) {
-			case EEXIST:
-				/*
-				 * The namespace hasn't changed.
-				 */
-				zcmd_free_nvlists(&zc);
-				return (0);
-
-			case ENOMEM:
-				zcmd_expand_dst_nvlist(hdl, &zc);
-				break;
-
-			default:
-				zcmd_free_nvlists(&zc);
-				return (zfs_standard_error(hdl, errno,
-				    dgettext(TEXT_DOMAIN, "failed to read "
-				    "pool configuration")));
-			}
-		} else {
-			hdl->libzfs_ns_gen = zc.zc_cookie;
-			break;
-		}
-	}
-
-	if (zcmd_read_dst_nvlist(hdl, &zc, &config) != 0) {
-		zcmd_free_nvlists(&zc);
-		return (-1);
-	}
-
-	zcmd_free_nvlists(&zc);
-
-	/*
-	 * Clear out any existing configuration information.
-	 */
-	cookie = NULL;
-	while ((cn = uu_avl_teardown(hdl->libzfs_ns_avl, &cookie)) != NULL) {
-		nvlist_free(cn->cn_config);
-		free(cn->cn_name);
-		free(cn);
-	}
-
-	elem = NULL;
-	while ((elem = nvlist_next_nvpair(config, elem)) != NULL) {
-		nvlist_t *child;
-		uu_avl_index_t where;
-
-		cn = zfs_alloc(hdl, sizeof (config_node_t));
-		cn->cn_name = zfs_strdup(hdl, nvpair_name(elem));
-		child = fnvpair_value_nvlist(elem);
-		if (nvlist_dup(child, &cn->cn_config, 0) != 0) {
-			free(cn->cn_name);
-			free(cn);
-			nvlist_free(config);
-			return (no_memory(hdl));
-		}
-		verify(uu_avl_find(hdl->libzfs_ns_avl, cn, NULL, &where)
-		    == NULL);
-
-		uu_avl_insert(hdl->libzfs_ns_avl, cn, where);
-	}
-
-	nvlist_free(config);
-	return (0);
-}
-
-/*
- * Retrieve the configuration for the given pool. The configuration is an nvlist
- * describing the vdevs, as well as the statistics associated with each one.
- */
-nvlist_t *
-zpool_get_config(zpool_handle_t *zhp, nvlist_t **oldconfig)
-{
-	if (oldconfig)
-		*oldconfig = zhp->zpool_old_config;
-	return (zhp->zpool_config);
-}
-
-/*
- * Retrieves a list of enabled features and their refcounts and caches it in
- * the pool handle.
- */
-nvlist_t *
-zpool_get_features(zpool_handle_t *zhp)
-{
-	nvlist_t *config, *features;
-
-	config = zpool_get_config(zhp, NULL);
-
-	if (config == NULL || !nvlist_exists(config,
-	    ZPOOL_CONFIG_FEATURE_STATS)) {
-		int error;
-		boolean_t missing = B_FALSE;
-
-		error = zpool_refresh_stats(zhp, &missing);
-
-		if (error != 0 || missing)
-			return (NULL);
-
-		config = zpool_get_config(zhp, NULL);
-	}
-
-	if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_FEATURE_STATS,
-	    &features) != 0)
-		return (NULL);
-
-	return (features);
-}
-
-/*
- * Refresh the vdev statistics associated with the given pool.  This is used in
- * iostat to show configuration changes and determine the delta from the last
- * time the function was called.  This function can fail, in case the pool has
- * been destroyed.
- */
-int
-zpool_refresh_stats(zpool_handle_t *zhp, boolean_t *missing)
-{
-	zfs_cmd_t zc = {"\0"};
-	int error;
-	nvlist_t *config;
-	libzfs_handle_t *hdl = zhp->zpool_hdl;
-
-	*missing = B_FALSE;
-	(void) strcpy(zc.zc_name, zhp->zpool_name);
-
-	if (zhp->zpool_config_size == 0)
-		zhp->zpool_config_size = 1 << 16;
-
-	zcmd_alloc_dst_nvlist(hdl, &zc, zhp->zpool_config_size);
-
-	for (;;) {
-		if (zfs_ioctl(zhp->zpool_hdl, ZFS_IOC_POOL_STATS,
-		    &zc) == 0) {
-			/*
-			 * The real error is returned in the zc_cookie field.
-			 */
-			error = zc.zc_cookie;
-			break;
-		}
-
-		if (errno == ENOMEM)
-			zcmd_expand_dst_nvlist(hdl, &zc);
-		else {
-			zcmd_free_nvlists(&zc);
-			if (errno == ENOENT || errno == EINVAL)
-				*missing = B_TRUE;
-			zhp->zpool_state = POOL_STATE_UNAVAIL;
-			return (0);
-		}
-	}
-
-	if (zcmd_read_dst_nvlist(hdl, &zc, &config) != 0) {
-		zcmd_free_nvlists(&zc);
-		return (-1);
-	}
-
-	zcmd_free_nvlists(&zc);
-
-	zhp->zpool_config_size = zc.zc_nvlist_dst_size;
-
-	if (zhp->zpool_config != NULL) {
-		nvlist_free(zhp->zpool_old_config);
-
-		zhp->zpool_old_config = zhp->zpool_config;
-	}
-
-	zhp->zpool_config = config;
-	if (error)
-		zhp->zpool_state = POOL_STATE_UNAVAIL;
-	else
-		zhp->zpool_state = POOL_STATE_ACTIVE;
-
-	return (0);
-}
-
-/*
- * Copies the pool config and state from szhp to dzhp. szhp and dzhp must
- * represent the same pool. Used by pool_list_refresh() to avoid another
- * round-trip into the kernel to get stats already collected earlier in the
- * function.
- */
-void
-zpool_refresh_stats_from_handle(zpool_handle_t *dzhp, zpool_handle_t *szhp)
-{
-	VERIFY0(strcmp(dzhp->zpool_name, szhp->zpool_name));
-	nvlist_free(dzhp->zpool_old_config);
-	dzhp->zpool_old_config = dzhp->zpool_config;
-	dzhp->zpool_config = fnvlist_dup(szhp->zpool_config);
-	dzhp->zpool_config_size = szhp->zpool_config_size;
-	dzhp->zpool_state = szhp->zpool_state;
-}
-
-/*
- * The following environment variables are undocumented
- * and should be used for testing purposes only:
- *
- * __ZFS_POOL_EXCLUDE - don't iterate over the pools it lists
- * __ZFS_POOL_RESTRICT - iterate only over the pools it lists
- *
- * This function returns B_TRUE if the pool should be skipped
- * during iteration.
- */
-boolean_t
-zpool_skip_pool(const char *poolname)
-{
-	static boolean_t initialized = B_FALSE;
-	static const char *exclude = NULL;
-	static const char *restricted = NULL;
-
-	const char *cur, *end;
-	int len;
-	int namelen = strlen(poolname);
-
-	if (!initialized) {
-		initialized = B_TRUE;
-		exclude = getenv("__ZFS_POOL_EXCLUDE");
-		restricted = getenv("__ZFS_POOL_RESTRICT");
-	}
-
-	if (exclude != NULL) {
-		cur = exclude;
-		do {
-			end = strchr(cur, ' ');
-			len = (NULL == end) ? strlen(cur) : (end - cur);
-			if (len == namelen && 0 == strncmp(cur, poolname, len))
-				return (B_TRUE);
-			cur += (len + 1);
-		} while (NULL != end);
-	}
-
-	if (NULL == restricted)
-		return (B_FALSE);
-
-	cur = restricted;
-	do {
-		end = strchr(cur, ' ');
-		len = (NULL == end) ? strlen(cur) : (end - cur);
-
-		if (len == namelen && 0 == strncmp(cur, poolname, len)) {
-			return (B_FALSE);
-		}
-
-		cur += (len + 1);
-	} while (NULL != end);
-
-	return (B_TRUE);
-}
-
-/*
- * Iterate over all pools in the system.
- */
-int
-zpool_iter(libzfs_handle_t *hdl, zpool_iter_f func, void *data)
-{
-	config_node_t *cn;
-	zpool_handle_t *zhp;
-	int ret;
-
-	/*
-	 * If someone makes a recursive call to zpool_iter(), we want to avoid
-	 * refreshing the namespace because that will invalidate the parent
-	 * context.  We allow recursive calls, but simply re-use the same
-	 * namespace AVL tree.
-	 */
-	if (!hdl->libzfs_pool_iter && namespace_reload(hdl) != 0)
-		return (-1);
-
-	hdl->libzfs_pool_iter++;
-	for (cn = uu_avl_first(hdl->libzfs_ns_avl); cn != NULL;
-	    cn = uu_avl_next(hdl->libzfs_ns_avl, cn)) {
-
-		if (zpool_skip_pool(cn->cn_name))
-			continue;
-
-		if (zpool_open_silent(hdl, cn->cn_name, &zhp) != 0) {
-			hdl->libzfs_pool_iter--;
-			return (-1);
-		}
-
-		if (zhp == NULL)
-			continue;
-
-		if ((ret = func(zhp, data)) != 0) {
-			hdl->libzfs_pool_iter--;
-			return (ret);
-		}
-	}
-	hdl->libzfs_pool_iter--;
-
-	return (0);
-}
-
-/*
- * Iterate over root datasets, calling the given function for each.  The zfs
- * handle passed each time must be explicitly closed by the callback.
- */
-int
-zfs_iter_root(libzfs_handle_t *hdl, zfs_iter_f func, void *data)
-{
-	config_node_t *cn;
-	zfs_handle_t *zhp;
-	int ret;
-
-	if (namespace_reload(hdl) != 0)
-		return (-1);
-
-	for (cn = uu_avl_first(hdl->libzfs_ns_avl); cn != NULL;
-	    cn = uu_avl_next(hdl->libzfs_ns_avl, cn)) {
-
-		if (zpool_skip_pool(cn->cn_name))
-			continue;
-
-		if ((zhp = make_dataset_handle(hdl, cn->cn_name)) == NULL)
-			continue;
-
-		if ((ret = func(zhp, data)) != 0)
-			return (ret);
-	}
-
-	return (0);
-}