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/*-
* Copyright (c) 2016 Andriy Gapon <avg@FreeBSD.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/types.h>
#include <errno.h>
#include <limits.h>
#include <inttypes.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <kenv.h>
#include <libzfs.h>
/* Keep in sync with zfsboot.c. */
#define MAX_COMMAND_LEN 512
int main(int argc, const char * const *argv)
{
char buf[32];
libzfs_handle_t *hdl;
uint64_t pool_guid;
uint64_t vdev_guid;
int zfs_fd;
int len;
if (argc != 2) {
fprintf(stderr, "usage: zfsbootcfg <boot.config(5) options>\n");
return (1);
}
len = strlen(argv[1]);
if (len >= MAX_COMMAND_LEN) {
fprintf(stderr, "options string is too long\n");
return (1);
}
if (kenv(KENV_GET, "vfs.zfs.boot.primary_pool", buf, sizeof(buf)) <= 0) {
perror("can't get vfs.zfs.boot.primary_pool");
return (1);
}
pool_guid = strtoumax(buf, NULL, 10);
if (pool_guid == 0) {
perror("can't parse vfs.zfs.boot.primary_pool");
return (1);
}
if (kenv(KENV_GET, "vfs.zfs.boot.primary_vdev", buf, sizeof(buf)) <= 0) {
perror("can't get vfs.zfs.boot.primary_vdev");
return (1);
}
vdev_guid = strtoumax(buf, NULL, 10);
if (vdev_guid == 0) {
perror("can't parse vfs.zfs.boot.primary_vdev");
return (1);
}
if ((hdl = libzfs_init()) == NULL) {
(void) fprintf(stderr, "internal error: failed to "
"initialize ZFS library\n");
return (1);
}
if (zpool_nextboot(hdl, pool_guid, vdev_guid, argv[1]) != 0) {
perror("ZFS_IOC_NEXTBOOT failed");
libzfs_fini(hdl);
return (1);
}
libzfs_fini(hdl);
printf("zfs next boot options are successfully written\n");
return (0);
}
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