2 * Copyright (c) 2016 Andriy Gapon <avg@FreeBSD.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 #include <sys/cdefs.h>
27 __FBSDID("$FreeBSD$");
29 #include <sys/types.h>
40 #include <libzfsbootenv.h>
42 #ifndef ZFS_MAXNAMELEN
43 #define ZFS_MAXNAMELEN 256
47 add_pair(const char *name, const char *nvlist, const char *key,
48 const char *type, const char *value)
55 rv = lzbe_nvlist_get(name, nvlist, &nv);
61 if (strcmp(type, "DATA_TYPE_STRING") == 0) {
62 data = __DECONST(void *, value);
63 size = strlen(data) + 1;
64 rv = lzbe_add_pair(nv, key, type, data, size);
65 } else if (strcmp(type, "DATA_TYPE_UINT64") == 0) {
68 v = strtoull(value, &end, 0);
69 if (errno != 0 || *end != '\0')
72 rv = lzbe_add_pair(nv, key, type, &v, size);
73 } else if (strcmp(type, "DATA_TYPE_INT64") == 0) {
76 v = strtoll(value, &end, 0);
77 if (errno != 0 || *end != '\0')
80 rv = lzbe_add_pair(nv, key, type, &v, size);
81 } else if (strcmp(type, "DATA_TYPE_UINT32") == 0) {
84 v = strtoul(value, &end, 0);
85 if (errno != 0 || *end != '\0')
88 rv = lzbe_add_pair(nv, key, type, &v, size);
89 } else if (strcmp(type, "DATA_TYPE_INT32") == 0) {
92 v = strtol(value, &end, 0);
93 if (errno != 0 || *end != '\0')
96 rv = lzbe_add_pair(nv, key, type, &v, size);
97 } else if (strcmp(type, "DATA_TYPE_UINT16") == 0) {
100 v = strtoul(value, &end, 0);
101 if (errno != 0 || *end != '\0')
104 rv = lzbe_add_pair(nv, key, type, &v, size);
105 } else if (strcmp(type, "DATA_TYPE_INT16") == 0) {
108 v = strtol(value, &end, 0);
109 if (errno != 0 || *end != '\0')
112 rv = lzbe_add_pair(nv, key, type, &v, size);
113 } else if (strcmp(type, "DATA_TYPE_UINT8") == 0) {
116 v = strtoul(value, &end, 0);
117 if (errno != 0 || *end != '\0')
120 rv = lzbe_add_pair(nv, key, type, &v, size);
121 } else if (strcmp(type, "DATA_TYPE_INT8") == 0) {
124 v = strtol(value, &end, 0);
125 if (errno != 0 || *end != '\0')
128 rv = lzbe_add_pair(nv, key, type, &v, size);
129 } else if (strcmp(type, "DATA_TYPE_BYTE") == 0) {
132 v = strtoul(value, &end, 0);
133 if (errno != 0 || *end != '\0')
136 rv = lzbe_add_pair(nv, key, type, &v, size);
137 } else if (strcmp(type, "DATA_TYPE_BOOLEAN_VALUE") == 0) {
140 v = strtol(value, &end, 0);
141 if (errno != 0 || *end != '\0') {
142 if (strcasecmp(value, "YES") == 0)
144 else if (strcasecmp(value, "NO") == 0)
146 if (strcasecmp(value, "true") == 0)
148 else if (strcasecmp(value, "false") == 0)
153 rv = lzbe_add_pair(nv, key, type, &v, size);
157 rv = lzbe_nvlist_set(name, nvlist, nv);
160 lzbe_nvlist_free(nv);
165 delete_pair(const char *name, const char *nvlist, const char *key)
170 rv = lzbe_nvlist_get(name, nvlist, &nv);
172 rv = lzbe_remove_pair(nv, key);
175 rv = lzbe_nvlist_set(name, nvlist, nv);
177 lzbe_nvlist_free(nv);
182 * Usage: zfsbootcfg [-z pool] [-d key] [-k key -t type -v value] [-p]
183 * zfsbootcfg [-z pool] -n nvlist [-d key] [-k key -t type -v value] [-p]
185 * if nvlist is set, we will update nvlist in bootenv.
186 * if nvlist is not set, we update pairs in bootenv.
189 main(int argc, char * const *argv)
191 char buf[ZFS_MAXNAMELEN], *name;
192 const char *key, *value, *type, *nvlist;
201 print = delete = false;
202 while ((rv = getopt(argc, argv, "d:k:n:pt:v:z:")) != -1) {
236 fprintf(stderr, "usage: zfsbootcfg <boot.config(5) options>\n");
241 rv = kenv(KENV_GET, "vfs.root.mountfrom", buf, sizeof(buf));
243 perror("can't get vfs.root.mountfrom");
247 if (strncmp(buf, "zfs:", 4) == 0) {
248 name = strchr(buf + 4, '/');
253 perror("not a zfs root");
259 if (key != NULL || value != NULL) {
261 type = "DATA_TYPE_STRING";
264 rv = delete_pair(name, nvlist, key);
265 else if (key == NULL || strcmp(key, "command") == 0)
266 rv = lzbe_set_boot_device(name, lzbe_add, value);
268 rv = add_pair(name, nvlist, key, type, value);
271 printf("zfs bootenv is successfully written\n");
273 printf("error: %d\n", rv);
277 if (lzbe_get_boot_device(name, &ptr) == 0) {
278 printf("zfs:%s:\n", ptr);
284 rv = lzbe_bootenv_print(name, nvlist, stdout);