1 /*-
2 * Copyright (c) 2018 M. Warner Losh <imp@FreeBSD.org>
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
23 * SUCH DAMAGE.
24 */
25
26 /*
27 * MD bootstrap main() and assorted miscellaneous
28 * commands.
29 */
30
31 #include <stand.h>
32 #include <stddef.h>
33 #include <sys/disk.h>
34 #include <sys/reboot.h>
35
36 #include "bootstrap.h"
37 #include "libzfs.h"
38
39 COMMAND_SET(lszfs, "lszfs", "list child datasets of a zfs dataset",
40 command_lszfs);
41
42 static int
command_lszfs(int argc,char * argv[])43 command_lszfs(int argc, char *argv[])
44 {
45 int err;
46
47 if (argc != 2) {
48 command_errmsg = "a single dataset must be supplied";
49 return (CMD_ERROR);
50 }
51
52 err = zfs_list(argv[1]);
53 if (err != 0) {
54 command_errmsg = strerror(err);
55 return (CMD_ERROR);
56 }
57 return (CMD_OK);
58 }
59
60 COMMAND_SET(reloadbe, "reloadbe", "refresh the list of ZFS Boot Environments",
61 command_reloadbe);
62
63 static int
command_reloadbe(int argc,char * argv[])64 command_reloadbe(int argc, char *argv[])
65 {
66 int err;
67 char *root;
68
69 if (argc > 2) {
70 command_errmsg = "wrong number of arguments";
71 return (CMD_ERROR);
72 }
73
74 if (argc == 2) {
75 err = zfs_bootenv(argv[1]);
76 } else {
77 root = getenv("zfs_be_root");
78 if (root == NULL) {
79 /* There does not appear to be a ZFS pool here, exit without error */
80 return (CMD_OK);
81 }
82 err = zfs_bootenv(root);
83 }
84
85 if (err != 0) {
86 command_errmsg = strerror(err);
87 return (CMD_ERROR);
88 }
89
90 return (CMD_OK);
91 }
92
93 uint64_t
ldi_get_size(void * priv)94 ldi_get_size(void *priv)
95 {
96 int fd = (uintptr_t) priv;
97 uint64_t size;
98
99 ioctl(fd, DIOCGMEDIASIZE, &size);
100 return (size);
101 }
102