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bce42981d9
options for zfsboot There is a branch-specific change in sbin/zfsbootcfg/Makefile because of LIBADD vs LDADD/DPADD.
99 lines
2.9 KiB
C
99 lines
2.9 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 main(int argc, const char * const *argv)
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{
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char buf[32];
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libzfs_handle_t *hdl;
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uint64_t pool_guid;
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uint64_t vdev_guid;
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int zfs_fd;
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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.zfs.boot.primary_pool", buf, sizeof(buf)) <= 0) {
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perror("can't get vfs.zfs.boot.primary_pool");
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return (1);
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}
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pool_guid = strtoumax(buf, NULL, 10);
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if (pool_guid == 0) {
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perror("can't parse vfs.zfs.boot.primary_pool");
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return (1);
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}
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if (kenv(KENV_GET, "vfs.zfs.boot.primary_vdev", buf, sizeof(buf)) <= 0) {
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perror("can't get vfs.zfs.boot.primary_vdev");
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return (1);
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}
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vdev_guid = strtoumax(buf, NULL, 10);
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if (vdev_guid == 0) {
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perror("can't parse vfs.zfs.boot.primary_vdev");
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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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if (zpool_nextboot(hdl, pool_guid, vdev_guid, argv[1]) != 0) {
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perror("ZFS_IOC_NEXTBOOT failed");
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libzfs_fini(hdl);
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return (1);
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}
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libzfs_fini(hdl);
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printf("zfs next boot options are successfully written\n");
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return (0);
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}
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