007278ebf0
vfs.zfs.boot.primary_pool is only set on BIOS boot, use vfs.root.mountfrom instead and update all vdevs on pool. Reviewed by: allanjude Sponsored by: Netflix, Klara Inc. Differential Revision: https://reviews.freebsd.org/D25103
147 lines
3.7 KiB
C
147 lines
3.7 KiB
C
/*-
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* Copyright (c) 2016 Andriy Gapon <avg@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/types.h>
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#include <errno.h>
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#include <limits.h>
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#include <inttypes.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <kenv.h>
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#include <libzfs.h>
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/* Keep in sync with zfsboot.c. */
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#define MAX_COMMAND_LEN 512
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int
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install_bootonce(libzfs_handle_t *hdl, uint64_t pool_guid, nvlist_t *nv,
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const char * const data)
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{
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nvlist_t **child;
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uint_t children = 0;
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uint64_t guid;
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int rv;
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(void) nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN, &child,
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&children);
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for (int c = 0; c < children; c++) {
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rv = install_bootonce(hdl, pool_guid, child[c], data);
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}
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if (children > 0)
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return (rv);
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if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, &guid) != 0) {
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perror("can't get vdev guid");
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return (1);
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}
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if (zpool_nextboot(hdl, pool_guid, guid, data) != 0) {
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perror("ZFS_IOC_NEXTBOOT failed");
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return (1);
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}
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return (0);
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}
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int main(int argc, const char * const *argv)
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{
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char buf[32], *name;
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libzfs_handle_t *hdl;
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zpool_handle_t *zphdl;
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uint64_t pool_guid;
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nvlist_t *nv, *config;
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int rv;
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int len;
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if (argc != 2) {
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fprintf(stderr, "usage: zfsbootcfg <boot.config(5) options>\n");
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return (1);
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}
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len = strlen(argv[1]);
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if (len >= MAX_COMMAND_LEN) {
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fprintf(stderr, "options string is too long\n");
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return (1);
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}
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if (kenv(KENV_GET, "vfs.root.mountfrom", buf, sizeof(buf)) <= 0) {
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perror("can't get vfs.root.mountfrom");
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return (1);
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}
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if (strncmp(buf, "zfs:", 4) == 0) {
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name = strchr(buf + 4, '/');
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if (name != NULL)
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*name = '\0';
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name = buf + 4;
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} else {
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perror("not a zfs root");
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return (1);
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}
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if ((hdl = libzfs_init()) == NULL) {
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(void) fprintf(stderr, "internal error: failed to "
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"initialize ZFS library\n");
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return (1);
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}
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zphdl = zpool_open(hdl, name);
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if (zphdl == NULL) {
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perror("can't open pool");
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libzfs_fini(hdl);
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return (1);
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}
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pool_guid = zpool_get_prop_int(zphdl, ZPOOL_PROP_GUID, NULL);
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config = zpool_get_config(zphdl, NULL);
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if (config == NULL) {
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perror("can't get pool config");
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zpool_close(zphdl);
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libzfs_fini(hdl);
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return (1);
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}
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if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, &nv) != 0) {
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perror("failed to get vdev tree");
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zpool_close(zphdl);
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libzfs_fini(hdl);
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return (1);
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}
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rv = install_bootonce(hdl, pool_guid, nv, argv[1]);
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zpool_close(zphdl);
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libzfs_fini(hdl);
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if (rv == 0)
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printf("zfs next boot options are successfully written\n");
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return (rv);
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}
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