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 #include <sys/types.h>
38 #include <libzfsbootenv.h>
40 #ifndef ZFS_MAXNAMELEN
41 #define ZFS_MAXNAMELEN 256
45 add_pair(const char *name, const char *nvlist, const char *key,
46 const char *type, const char *value)
53 rv = lzbe_nvlist_get(name, nvlist, &nv);
59 if (strcmp(type, "DATA_TYPE_STRING") == 0) {
60 data = __DECONST(void *, value);
61 size = strlen(data) + 1;
62 rv = lzbe_add_pair(nv, key, type, data, size);
63 } else if (strcmp(type, "DATA_TYPE_UINT64") == 0) {
66 v = strtoull(value, &end, 0);
67 if (errno != 0 || *end != '\0')
70 rv = lzbe_add_pair(nv, key, type, &v, size);
71 } else if (strcmp(type, "DATA_TYPE_INT64") == 0) {
74 v = strtoll(value, &end, 0);
75 if (errno != 0 || *end != '\0')
78 rv = lzbe_add_pair(nv, key, type, &v, size);
79 } else if (strcmp(type, "DATA_TYPE_UINT32") == 0) {
82 v = strtoul(value, &end, 0);
83 if (errno != 0 || *end != '\0')
86 rv = lzbe_add_pair(nv, key, type, &v, size);
87 } else if (strcmp(type, "DATA_TYPE_INT32") == 0) {
90 v = strtol(value, &end, 0);
91 if (errno != 0 || *end != '\0')
94 rv = lzbe_add_pair(nv, key, type, &v, size);
95 } else if (strcmp(type, "DATA_TYPE_UINT16") == 0) {
98 v = strtoul(value, &end, 0);
99 if (errno != 0 || *end != '\0')
102 rv = lzbe_add_pair(nv, key, type, &v, size);
103 } else if (strcmp(type, "DATA_TYPE_INT16") == 0) {
106 v = strtol(value, &end, 0);
107 if (errno != 0 || *end != '\0')
110 rv = lzbe_add_pair(nv, key, type, &v, size);
111 } else if (strcmp(type, "DATA_TYPE_UINT8") == 0) {
114 v = strtoul(value, &end, 0);
115 if (errno != 0 || *end != '\0')
118 rv = lzbe_add_pair(nv, key, type, &v, size);
119 } else if (strcmp(type, "DATA_TYPE_INT8") == 0) {
122 v = strtol(value, &end, 0);
123 if (errno != 0 || *end != '\0')
126 rv = lzbe_add_pair(nv, key, type, &v, size);
127 } else if (strcmp(type, "DATA_TYPE_BYTE") == 0) {
130 v = strtoul(value, &end, 0);
131 if (errno != 0 || *end != '\0')
134 rv = lzbe_add_pair(nv, key, type, &v, size);
135 } else if (strcmp(type, "DATA_TYPE_BOOLEAN_VALUE") == 0) {
138 v = strtol(value, &end, 0);
139 if (errno != 0 || *end != '\0') {
140 if (strcasecmp(value, "YES") == 0)
142 else if (strcasecmp(value, "NO") == 0)
144 if (strcasecmp(value, "true") == 0)
146 else if (strcasecmp(value, "false") == 0)
151 rv = lzbe_add_pair(nv, key, type, &v, size);
155 rv = lzbe_nvlist_set(name, nvlist, nv);
158 lzbe_nvlist_free(nv);
163 delete_pair(const char *name, const char *nvlist, const char *key)
168 rv = lzbe_nvlist_get(name, nvlist, &nv);
170 rv = lzbe_remove_pair(nv, key);
173 rv = lzbe_nvlist_set(name, nvlist, nv);
175 lzbe_nvlist_free(nv);
180 * Usage: zfsbootcfg [-z pool] [-d key] [-k key -t type -v value] [-p]
181 * zfsbootcfg [-z pool] -n nvlist [-d key] [-k key -t type -v value] [-p]
183 * if nvlist is set, we will update nvlist in bootenv.
184 * if nvlist is not set, we update pairs in bootenv.
187 main(int argc, char * const *argv)
189 char buf[ZFS_MAXNAMELEN], *name;
190 const char *key, *value, *type, *nvlist;
199 print = delete = false;
200 while ((rv = getopt(argc, argv, "d:k:n:pt:v:z:")) != -1) {
234 fprintf(stderr, "usage: zfsbootcfg <boot.config(5) options>\n");
239 rv = kenv(KENV_GET, "vfs.root.mountfrom", buf, sizeof(buf));
241 perror("can't get vfs.root.mountfrom");
245 if (strncmp(buf, "zfs:", 4) == 0) {
246 name = strchr(buf + 4, '/');
251 perror("not a zfs root");
257 if (key != NULL || value != NULL) {
259 type = "DATA_TYPE_STRING";
262 rv = delete_pair(name, nvlist, key);
263 else if (key == NULL || strcmp(key, "command") == 0)
264 rv = lzbe_set_boot_device(name, lzbe_add, value);
266 rv = add_pair(name, nvlist, key, type, value);
269 printf("zfs bootenv is successfully written\n");
271 printf("error: %d\n", rv);
275 if (lzbe_get_boot_device(name, &ptr) == 0) {
276 printf("zfs:%s:\n", ptr);
282 rv = lzbe_bootenv_print(name, nvlist, stdout);