1 /*-
2 * Copyright (c) 2018 M. Warner Losh <[email protected]>
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 __FBSDID("$FreeBSD$");
28
29 /*
30 * MD bootstrap main() and assorted miscellaneous
31 * commands.
32 */
33
34 #include <stand.h>
35 #include <stddef.h>
36 #include <sys/disk.h>
37 #include <sys/reboot.h>
38
39 #include "bootstrap.h"
40 #include "libzfs.h"
41
42 COMMAND_SET(lszfs, "lszfs", "list child datasets of a zfs dataset",
43 command_lszfs);
44
45 static int
command_lszfs(int argc,char * argv[])46 command_lszfs(int argc, char *argv[])
47 {
48 int err;
49
50 if (argc != 2) {
51 command_errmsg = "a single dataset must be supplied";
52 return (CMD_ERROR);
53 }
54
55 err = zfs_list(argv[1]);
56 if (err != 0) {
57 command_errmsg = strerror(err);
58 return (CMD_ERROR);
59 }
60 return (CMD_OK);
61 }
62
63 COMMAND_SET(reloadbe, "reloadbe", "refresh the list of ZFS Boot Environments",
64 command_reloadbe);
65
66 static int
command_reloadbe(int argc,char * argv[])67 command_reloadbe(int argc, char *argv[])
68 {
69 int err;
70 char *root;
71
72 if (argc > 2) {
73 command_errmsg = "wrong number of arguments";
74 return (CMD_ERROR);
75 }
76
77 if (argc == 2) {
78 err = zfs_bootenv(argv[1]);
79 } else {
80 root = getenv("zfs_be_root");
81 if (root == NULL) {
82 /* There does not appear to be a ZFS pool here, exit without error */
83 return (CMD_OK);
84 }
85 err = zfs_bootenv(root);
86 }
87
88 if (err != 0) {
89 command_errmsg = strerror(err);
90 return (CMD_ERROR);
91 }
92
93 return (CMD_OK);
94 }
95
96 uint64_t
ldi_get_size(void * priv)97 ldi_get_size(void *priv)
98 {
99 int fd = (uintptr_t) priv;
100 uint64_t size;
101
102 ioctl(fd, DIOCGMEDIASIZE, &size);
103 return (size);
104 }
105