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34dc7c2f BB |
1 | /* |
2 | * CDDL HEADER START | |
3 | * | |
4 | * The contents of this file are subject to the terms of the | |
5 | * Common Development and Distribution License (the "License"). | |
6 | * You may not use this file except in compliance with the License. | |
7 | * | |
8 | * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE | |
9 | * or http://www.opensolaris.org/os/licensing. | |
10 | * See the License for the specific language governing permissions | |
11 | * and limitations under the License. | |
12 | * | |
13 | * When distributing Covered Code, include this CDDL HEADER in each | |
14 | * file and include the License file at usr/src/OPENSOLARIS.LICENSE. | |
15 | * If applicable, add the following below this CDDL HEADER, with the | |
16 | * fields enclosed by brackets "[]" replaced with your own identifying | |
17 | * information: Portions Copyright [yyyy] [name of copyright owner] | |
18 | * | |
19 | * CDDL HEADER END | |
20 | */ | |
21 | /* | |
428870ff | 22 | * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved. |
34dc7c2f BB |
23 | */ |
24 | ||
34dc7c2f BB |
25 | /* |
26 | * This file is intended for functions that ought to be common between user | |
27 | * land (libzfs) and the kernel. When many common routines need to be shared | |
28 | * then a separate file should to be created. | |
29 | */ | |
30 | ||
31 | #if defined(_KERNEL) | |
32 | #include <sys/systm.h> | |
428870ff BB |
33 | #else |
34 | #include <string.h> | |
34dc7c2f BB |
35 | #endif |
36 | ||
37 | #include <sys/types.h> | |
38 | #include <sys/fs/zfs.h> | |
428870ff | 39 | #include <sys/int_limits.h> |
34dc7c2f | 40 | #include <sys/nvpair.h> |
428870ff | 41 | #include "zfs_comutil.h" |
34dc7c2f BB |
42 | |
43 | /* | |
44 | * Are there allocatable vdevs? | |
45 | */ | |
46 | boolean_t | |
47 | zfs_allocatable_devs(nvlist_t *nv) | |
48 | { | |
49 | uint64_t is_log; | |
50 | uint_t c; | |
51 | nvlist_t **child; | |
52 | uint_t children; | |
53 | ||
54 | if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN, | |
55 | &child, &children) != 0) { | |
56 | return (B_FALSE); | |
57 | } | |
58 | for (c = 0; c < children; c++) { | |
59 | is_log = 0; | |
60 | (void) nvlist_lookup_uint64(child[c], ZPOOL_CONFIG_IS_LOG, | |
61 | &is_log); | |
62 | if (!is_log) | |
63 | return (B_TRUE); | |
64 | } | |
65 | return (B_FALSE); | |
66 | } | |
428870ff BB |
67 | |
68 | void | |
69 | zpool_get_rewind_policy(nvlist_t *nvl, zpool_rewind_policy_t *zrpp) | |
70 | { | |
71 | nvlist_t *policy; | |
72 | nvpair_t *elem; | |
73 | char *nm; | |
74 | ||
75 | /* Defaults */ | |
76 | zrpp->zrp_request = ZPOOL_NO_REWIND; | |
77 | zrpp->zrp_maxmeta = 0; | |
78 | zrpp->zrp_maxdata = UINT64_MAX; | |
79 | zrpp->zrp_txg = UINT64_MAX; | |
80 | ||
81 | if (nvl == NULL) | |
82 | return; | |
83 | ||
84 | elem = NULL; | |
85 | while ((elem = nvlist_next_nvpair(nvl, elem)) != NULL) { | |
86 | nm = nvpair_name(elem); | |
87 | if (strcmp(nm, ZPOOL_REWIND_POLICY) == 0) { | |
88 | if (nvpair_value_nvlist(elem, &policy) == 0) | |
89 | zpool_get_rewind_policy(policy, zrpp); | |
90 | return; | |
91 | } else if (strcmp(nm, ZPOOL_REWIND_REQUEST) == 0) { | |
92 | if (nvpair_value_uint32(elem, &zrpp->zrp_request) == 0) | |
93 | if (zrpp->zrp_request & ~ZPOOL_REWIND_POLICIES) | |
94 | zrpp->zrp_request = ZPOOL_NO_REWIND; | |
95 | } else if (strcmp(nm, ZPOOL_REWIND_REQUEST_TXG) == 0) { | |
96 | (void) nvpair_value_uint64(elem, &zrpp->zrp_txg); | |
97 | } else if (strcmp(nm, ZPOOL_REWIND_META_THRESH) == 0) { | |
98 | (void) nvpair_value_uint64(elem, &zrpp->zrp_maxmeta); | |
99 | } else if (strcmp(nm, ZPOOL_REWIND_DATA_THRESH) == 0) { | |
100 | (void) nvpair_value_uint64(elem, &zrpp->zrp_maxdata); | |
101 | } | |
102 | } | |
103 | if (zrpp->zrp_request == 0) | |
104 | zrpp->zrp_request = ZPOOL_NO_REWIND; | |
105 | } | |
106 | ||
107 | typedef struct zfs_version_spa_map { | |
108 | int version_zpl; | |
109 | int version_spa; | |
110 | } zfs_version_spa_map_t; | |
111 | ||
112 | /* | |
113 | * Keep this table in monotonically increasing version number order. | |
114 | */ | |
115 | static zfs_version_spa_map_t zfs_version_table[] = { | |
116 | {ZPL_VERSION_INITIAL, SPA_VERSION_INITIAL}, | |
117 | {ZPL_VERSION_DIRENT_TYPE, SPA_VERSION_INITIAL}, | |
118 | {ZPL_VERSION_FUID, SPA_VERSION_FUID}, | |
119 | {ZPL_VERSION_USERSPACE, SPA_VERSION_USERSPACE}, | |
120 | {ZPL_VERSION_SA, SPA_VERSION_SA}, | |
121 | {0, 0} | |
122 | }; | |
123 | ||
124 | /* | |
125 | * Return the max zpl version for a corresponding spa version | |
126 | * -1 is returned if no mapping exists. | |
127 | */ | |
128 | int | |
129 | zfs_zpl_version_map(int spa_version) | |
130 | { | |
131 | int i; | |
132 | int version = -1; | |
133 | ||
134 | for (i = 0; zfs_version_table[i].version_spa; i++) { | |
135 | if (spa_version >= zfs_version_table[i].version_spa) | |
136 | version = zfs_version_table[i].version_zpl; | |
137 | } | |
138 | ||
139 | return (version); | |
140 | } | |
141 | ||
142 | /* | |
143 | * Return the min spa version for a corresponding spa version | |
144 | * -1 is returned if no mapping exists. | |
145 | */ | |
146 | int | |
147 | zfs_spa_version_map(int zpl_version) | |
148 | { | |
149 | int i; | |
150 | int version = -1; | |
151 | ||
152 | for (i = 0; zfs_version_table[i].version_zpl; i++) { | |
153 | if (zfs_version_table[i].version_zpl >= zpl_version) | |
154 | return (zfs_version_table[i].version_spa); | |
155 | } | |
156 | ||
157 | return (version); | |
158 | } | |
159 | ||
160 | const char *zfs_history_event_names[LOG_END] = { | |
161 | "invalid event", | |
162 | "pool create", | |
163 | "vdev add", | |
164 | "pool remove", | |
165 | "pool destroy", | |
166 | "pool export", | |
167 | "pool import", | |
168 | "vdev attach", | |
169 | "vdev replace", | |
170 | "vdev detach", | |
171 | "vdev online", | |
172 | "vdev offline", | |
173 | "vdev upgrade", | |
174 | "pool clear", | |
175 | "pool scrub", | |
176 | "pool property set", | |
177 | "create", | |
178 | "clone", | |
179 | "destroy", | |
180 | "destroy_begin_sync", | |
181 | "inherit", | |
182 | "property set", | |
183 | "quota set", | |
184 | "permission update", | |
185 | "permission remove", | |
186 | "permission who remove", | |
187 | "promote", | |
188 | "receive", | |
189 | "rename", | |
190 | "reservation set", | |
191 | "replay_inc_sync", | |
192 | "replay_full_sync", | |
193 | "rollback", | |
194 | "snapshot", | |
195 | "filesystem version upgrade", | |
196 | "refquota set", | |
197 | "refreservation set", | |
198 | "pool scrub done", | |
199 | "user hold", | |
200 | "user release", | |
201 | "pool split", | |
202 | }; | |
c28b2279 BB |
203 | |
204 | #if defined(_KERNEL) && defined(HAVE_SPL) | |
205 | EXPORT_SYMBOL(zfs_allocatable_devs); | |
206 | EXPORT_SYMBOL(zpool_get_rewind_policy); | |
207 | EXPORT_SYMBOL(zfs_zpl_version_map); | |
208 | EXPORT_SYMBOL(zfs_spa_version_map); | |
209 | EXPORT_SYMBOL(zfs_history_event_names); | |
210 | #endif |