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 #include <sys/cdefs.h>
27 /*
28 * MD bootstrap main() and assorted miscellaneous
29 * commands.
30 */
31
32 #include <stand.h>
33 #include <stddef.h>
34 #include <sys/disk.h>
35 #include <sys/reboot.h>
36
37 #include "bootstrap.h"
38 #include "libzfs.h"
39
40 COMMAND_SET(lszfs, "lszfs", "list child datasets of a zfs dataset",
41 command_lszfs);
42
43 static int
command_lszfs(int argc,char * argv[])44 command_lszfs(int argc, char *argv[])
45 {
46 int err;
47
48 if (argc != 2) {
49 command_errmsg = "a single dataset must be supplied";
50 return (CMD_ERROR);
51 }
52
53 err = zfs_list(argv[1]);
54 if (err != 0) {
55 command_errmsg = strerror(err);
56 return (CMD_ERROR);
57 }
58 return (CMD_OK);
59 }
60
61 COMMAND_SET(reloadbe, "reloadbe", "refresh the list of ZFS Boot Environments",
62 command_reloadbe);
63
64 static int
command_reloadbe(int argc,char * argv[])65 command_reloadbe(int argc, char *argv[])
66 {
67 int err;
68 char *root;
69
70 if (argc > 2) {
71 command_errmsg = "wrong number of arguments";
72 return (CMD_ERROR);
73 }
74
75 if (argc == 2) {
76 err = zfs_bootenv(argv[1]);
77 } else {
78 root = getenv("zfs_be_root");
79 if (root == NULL) {
80 /* There does not appear to be a ZFS pool here, exit without error */
81 return (CMD_OK);
82 }
83 err = zfs_bootenv(root);
84 }
85
86 if (err != 0) {
87 command_errmsg = strerror(err);
88 return (CMD_ERROR);
89 }
90
91 return (CMD_OK);
92 }
93
94 uint64_t
ldi_get_size(void * priv)95 ldi_get_size(void *priv)
96 {
97 int fd = (uintptr_t) priv;
98 uint64_t size;
99
100 ioctl(fd, DIOCGMEDIASIZE, &size);
101 return (size);
102 }
103