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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. |
8a393be3 | 23 | * Copyright (c) 2012, 2017 by Delphix. All rights reserved. |
34dc7c2f BB |
24 | */ |
25 | ||
34dc7c2f BB |
26 | /* |
27 | * This file is intended for functions that ought to be common between user | |
28 | * land (libzfs) and the kernel. When many common routines need to be shared | |
29 | * then a separate file should to be created. | |
30 | */ | |
31 | ||
93ce2b4c | 32 | #if !defined(_KERNEL) |
428870ff | 33 | #include <string.h> |
34dc7c2f BB |
34 | #endif |
35 | ||
36 | #include <sys/types.h> | |
37 | #include <sys/fs/zfs.h> | |
38 | #include <sys/nvpair.h> | |
428870ff | 39 | #include "zfs_comutil.h" |
6078881a | 40 | #include <sys/zfs_ratelimit.h> |
34dc7c2f BB |
41 | |
42 | /* | |
43 | * Are there allocatable vdevs? | |
44 | */ | |
45 | boolean_t | |
46 | zfs_allocatable_devs(nvlist_t *nv) | |
47 | { | |
48 | uint64_t is_log; | |
49 | uint_t c; | |
50 | nvlist_t **child; | |
51 | uint_t children; | |
52 | ||
53 | if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN, | |
54 | &child, &children) != 0) { | |
55 | return (B_FALSE); | |
56 | } | |
57 | for (c = 0; c < children; c++) { | |
58 | is_log = 0; | |
59 | (void) nvlist_lookup_uint64(child[c], ZPOOL_CONFIG_IS_LOG, | |
60 | &is_log); | |
61 | if (!is_log) | |
62 | return (B_TRUE); | |
63 | } | |
64 | return (B_FALSE); | |
65 | } | |
428870ff BB |
66 | |
67 | void | |
8a393be3 | 68 | zpool_get_load_policy(nvlist_t *nvl, zpool_load_policy_t *zlpp) |
428870ff BB |
69 | { |
70 | nvlist_t *policy; | |
71 | nvpair_t *elem; | |
72 | char *nm; | |
73 | ||
74 | /* Defaults */ | |
8a393be3 PZ |
75 | zlpp->zlp_rewind = ZPOOL_NO_REWIND; |
76 | zlpp->zlp_maxmeta = 0; | |
77 | zlpp->zlp_maxdata = UINT64_MAX; | |
78 | zlpp->zlp_txg = UINT64_MAX; | |
428870ff BB |
79 | |
80 | if (nvl == NULL) | |
81 | return; | |
82 | ||
83 | elem = NULL; | |
84 | while ((elem = nvlist_next_nvpair(nvl, elem)) != NULL) { | |
85 | nm = nvpair_name(elem); | |
8a393be3 | 86 | if (strcmp(nm, ZPOOL_LOAD_POLICY) == 0) { |
428870ff | 87 | if (nvpair_value_nvlist(elem, &policy) == 0) |
8a393be3 | 88 | zpool_get_load_policy(policy, zlpp); |
428870ff | 89 | return; |
8a393be3 PZ |
90 | } else if (strcmp(nm, ZPOOL_LOAD_REWIND_POLICY) == 0) { |
91 | if (nvpair_value_uint32(elem, &zlpp->zlp_rewind) == 0) | |
92 | if (zlpp->zlp_rewind & ~ZPOOL_REWIND_POLICIES) | |
93 | zlpp->zlp_rewind = ZPOOL_NO_REWIND; | |
94 | } else if (strcmp(nm, ZPOOL_LOAD_REQUEST_TXG) == 0) { | |
95 | (void) nvpair_value_uint64(elem, &zlpp->zlp_txg); | |
96 | } else if (strcmp(nm, ZPOOL_LOAD_META_THRESH) == 0) { | |
97 | (void) nvpair_value_uint64(elem, &zlpp->zlp_maxmeta); | |
98 | } else if (strcmp(nm, ZPOOL_LOAD_DATA_THRESH) == 0) { | |
99 | (void) nvpair_value_uint64(elem, &zlpp->zlp_maxdata); | |
428870ff BB |
100 | } |
101 | } | |
8a393be3 PZ |
102 | if (zlpp->zlp_rewind == 0) |
103 | zlpp->zlp_rewind = ZPOOL_NO_REWIND; | |
428870ff BB |
104 | } |
105 | ||
106 | typedef struct zfs_version_spa_map { | |
107 | int version_zpl; | |
108 | int version_spa; | |
109 | } zfs_version_spa_map_t; | |
110 | ||
111 | /* | |
112 | * Keep this table in monotonically increasing version number order. | |
113 | */ | |
114 | static zfs_version_spa_map_t zfs_version_table[] = { | |
115 | {ZPL_VERSION_INITIAL, SPA_VERSION_INITIAL}, | |
116 | {ZPL_VERSION_DIRENT_TYPE, SPA_VERSION_INITIAL}, | |
117 | {ZPL_VERSION_FUID, SPA_VERSION_FUID}, | |
118 | {ZPL_VERSION_USERSPACE, SPA_VERSION_USERSPACE}, | |
119 | {ZPL_VERSION_SA, SPA_VERSION_SA}, | |
120 | {0, 0} | |
121 | }; | |
122 | ||
123 | /* | |
124 | * Return the max zpl version for a corresponding spa version | |
125 | * -1 is returned if no mapping exists. | |
126 | */ | |
127 | int | |
128 | zfs_zpl_version_map(int spa_version) | |
129 | { | |
130 | int i; | |
131 | int version = -1; | |
132 | ||
133 | for (i = 0; zfs_version_table[i].version_spa; i++) { | |
134 | if (spa_version >= zfs_version_table[i].version_spa) | |
135 | version = zfs_version_table[i].version_zpl; | |
136 | } | |
137 | ||
138 | return (version); | |
139 | } | |
140 | ||
141 | /* | |
142 | * Return the min spa version for a corresponding spa version | |
143 | * -1 is returned if no mapping exists. | |
144 | */ | |
145 | int | |
146 | zfs_spa_version_map(int zpl_version) | |
147 | { | |
148 | int i; | |
149 | int version = -1; | |
150 | ||
151 | for (i = 0; zfs_version_table[i].version_zpl; i++) { | |
152 | if (zfs_version_table[i].version_zpl >= zpl_version) | |
153 | return (zfs_version_table[i].version_spa); | |
154 | } | |
155 | ||
156 | return (version); | |
157 | } | |
158 | ||
6f1ffb06 MA |
159 | /* |
160 | * This is the table of legacy internal event names; it should not be modified. | |
161 | * The internal events are now stored in the history log as strings. | |
162 | */ | |
163 | const char *zfs_history_event_names[ZFS_NUM_LEGACY_HISTORY_EVENTS] = { | |
428870ff BB |
164 | "invalid event", |
165 | "pool create", | |
166 | "vdev add", | |
167 | "pool remove", | |
168 | "pool destroy", | |
169 | "pool export", | |
170 | "pool import", | |
171 | "vdev attach", | |
172 | "vdev replace", | |
173 | "vdev detach", | |
174 | "vdev online", | |
175 | "vdev offline", | |
176 | "vdev upgrade", | |
177 | "pool clear", | |
178 | "pool scrub", | |
179 | "pool property set", | |
180 | "create", | |
181 | "clone", | |
182 | "destroy", | |
183 | "destroy_begin_sync", | |
184 | "inherit", | |
185 | "property set", | |
186 | "quota set", | |
187 | "permission update", | |
188 | "permission remove", | |
189 | "permission who remove", | |
190 | "promote", | |
191 | "receive", | |
192 | "rename", | |
193 | "reservation set", | |
194 | "replay_inc_sync", | |
195 | "replay_full_sync", | |
196 | "rollback", | |
197 | "snapshot", | |
198 | "filesystem version upgrade", | |
199 | "refquota set", | |
200 | "refreservation set", | |
201 | "pool scrub done", | |
202 | "user hold", | |
203 | "user release", | |
204 | "pool split", | |
205 | }; | |
c28b2279 | 206 | |
2e5dc449 MA |
207 | boolean_t |
208 | zfs_dataset_name_hidden(const char *name) | |
209 | { | |
210 | /* | |
211 | * Skip over datasets that are not visible in this zone, | |
212 | * internal datasets (which have a $ in their name), and | |
213 | * temporary datasets (which have a % in their name). | |
214 | */ | |
215 | if (strchr(name, '$') != NULL) | |
216 | return (B_TRUE); | |
217 | if (strchr(name, '%') != NULL) | |
218 | return (B_TRUE); | |
219 | if (!INGLOBALZONE(curproc) && !zone_dataset_visible(name, NULL)) | |
220 | return (B_TRUE); | |
221 | return (B_FALSE); | |
222 | } | |
223 | ||
93ce2b4c | 224 | #if defined(_KERNEL) |
c28b2279 | 225 | EXPORT_SYMBOL(zfs_allocatable_devs); |
8a393be3 | 226 | EXPORT_SYMBOL(zpool_get_load_policy); |
c28b2279 BB |
227 | EXPORT_SYMBOL(zfs_zpl_version_map); |
228 | EXPORT_SYMBOL(zfs_spa_version_map); | |
229 | EXPORT_SYMBOL(zfs_history_event_names); | |
2e5dc449 | 230 | EXPORT_SYMBOL(zfs_dataset_name_hidden); |
c28b2279 | 231 | #endif |