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/types.h>
37 #include <libzfsbootenv.h>
39 #ifndef ZFS_MAXNAMELEN
40 #define ZFS_MAXNAMELEN 256
44 add_pair(const char *name, const char *nvlist, const char *key,
45 const char *type, const char *value)
52 rv = lzbe_nvlist_get(name, nvlist, &nv);
58 if (strcmp(type, "DATA_TYPE_STRING") == 0) {
59 data = __DECONST(void *, value);
60 size = strlen(data) + 1;
61 rv = lzbe_add_pair(nv, key, type, data, size);
62 } else if (strcmp(type, "DATA_TYPE_UINT64") == 0) {
65 v = strtoull(value, &end, 0);
66 if (errno != 0 || *end != '\0')
69 rv = lzbe_add_pair(nv, key, type, &v, size);
70 } else if (strcmp(type, "DATA_TYPE_INT64") == 0) {
73 v = strtoll(value, &end, 0);
74 if (errno != 0 || *end != '\0')
77 rv = lzbe_add_pair(nv, key, type, &v, size);
78 } else if (strcmp(type, "DATA_TYPE_UINT32") == 0) {
81 v = strtoul(value, &end, 0);
82 if (errno != 0 || *end != '\0')
85 rv = lzbe_add_pair(nv, key, type, &v, size);
86 } else if (strcmp(type, "DATA_TYPE_INT32") == 0) {
89 v = strtol(value, &end, 0);
90 if (errno != 0 || *end != '\0')
93 rv = lzbe_add_pair(nv, key, type, &v, size);
94 } else if (strcmp(type, "DATA_TYPE_UINT16") == 0) {
97 v = strtoul(value, &end, 0);
98 if (errno != 0 || *end != '\0')
101 rv = lzbe_add_pair(nv, key, type, &v, size);
102 } else if (strcmp(type, "DATA_TYPE_INT16") == 0) {
105 v = strtol(value, &end, 0);
106 if (errno != 0 || *end != '\0')
109 rv = lzbe_add_pair(nv, key, type, &v, size);
110 } else if (strcmp(type, "DATA_TYPE_UINT8") == 0) {
113 v = strtoul(value, &end, 0);
114 if (errno != 0 || *end != '\0')
117 rv = lzbe_add_pair(nv, key, type, &v, size);
118 } else if (strcmp(type, "DATA_TYPE_INT8") == 0) {
121 v = strtol(value, &end, 0);
122 if (errno != 0 || *end != '\0')
125 rv = lzbe_add_pair(nv, key, type, &v, size);
126 } else if (strcmp(type, "DATA_TYPE_BYTE") == 0) {
129 v = strtoul(value, &end, 0);
130 if (errno != 0 || *end != '\0')
133 rv = lzbe_add_pair(nv, key, type, &v, size);
134 } else if (strcmp(type, "DATA_TYPE_BOOLEAN_VALUE") == 0) {
137 v = strtol(value, &end, 0);
138 if (errno != 0 || *end != '\0') {
139 if (strcasecmp(value, "YES") == 0)
141 else if (strcasecmp(value, "NO") == 0)
143 if (strcasecmp(value, "true") == 0)
145 else if (strcasecmp(value, "false") == 0)
150 rv = lzbe_add_pair(nv, key, type, &v, size);
154 rv = lzbe_nvlist_set(name, nvlist, nv);
157 lzbe_nvlist_free(nv);
162 delete_pair(const char *name, const char *nvlist, const char *key)
167 rv = lzbe_nvlist_get(name, nvlist, &nv);
169 rv = lzbe_remove_pair(nv, key);
172 rv = lzbe_nvlist_set(name, nvlist, nv);
174 lzbe_nvlist_free(nv);
179 * Usage: zfsbootcfg [-z pool] [-d key] [-k key -t type -v value] [-p]
180 * zfsbootcfg [-z pool] -n nvlist [-d key] [-k key -t type -v value] [-p]
182 * if nvlist is set, we will update nvlist in bootenv.
183 * if nvlist is not set, we update pairs in bootenv.
186 main(int argc, char * const *argv)
188 char buf[ZFS_MAXNAMELEN], *name;
189 const char *key, *value, *type, *nvlist;
198 print = delete = false;
199 while ((rv = getopt(argc, argv, "d:k:n:pt:v:z:")) != -1) {
233 fprintf(stderr, "usage: zfsbootcfg <boot.config(5) options>\n");
238 rv = kenv(KENV_GET, "vfs.root.mountfrom", buf, sizeof(buf));
240 perror("can't get vfs.root.mountfrom");
244 if (strncmp(buf, "zfs:", 4) == 0) {
245 name = strchr(buf + 4, '/');
250 perror("not a zfs root");
256 if (key != NULL || value != NULL) {
258 type = "DATA_TYPE_STRING";
261 rv = delete_pair(name, nvlist, key);
262 else if (key == NULL || strcmp(key, "command") == 0)
263 rv = lzbe_set_boot_device(name, lzbe_add, value);
265 rv = add_pair(name, nvlist, key, type, value);
268 printf("zfs bootenv is successfully written\n");
270 printf("error: %d\n", rv);
274 if (lzbe_get_boot_device(name, &ptr) == 0) {
275 printf("zfs:%s:\n", ptr);
281 rv = lzbe_bootenv_print(name, nvlist, stdout);