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.
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.
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]
23 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Copyright (c) 2011 Pawel Jakub Dawidek. All rights reserved.
25 * Copyright (c) 2011, 2017 by Delphix. All rights reserved.
26 * Copyright (c) 2013 Martin Matuska <mm@FreeBSD.org>. All rights reserved.
29 #ifndef _LIBZFS_IMPL_H
30 #define _LIBZFS_IMPL_H
32 #include <sys/fs/zfs.h>
34 #include <sys/nvpair.h>
36 #include <sys/zfs_ioctl.h>
41 #include <libzfs_core.h>
42 #include <libzfs_compat.h>
53 typedef struct libzfs_fru {
56 struct libzfs_fru *zf_chain;
57 struct libzfs_fru *zf_next;
60 struct libzfs_handle {
64 FILE *libzfs_sharetab;
65 zpool_handle_t *libzfs_pool_handles;
66 uu_avl_pool_t *libzfs_ns_avlpool;
67 uu_avl_t *libzfs_ns_avl;
68 uint64_t libzfs_ns_gen;
69 int libzfs_desc_active;
70 char libzfs_action[1024];
71 char libzfs_desc[1024];
73 int libzfs_storeerr; /* stuff error messages into buffer */
74 void *libzfs_sharehdl; /* libshare handle */
75 boolean_t libzfs_mnttab_enable;
77 * We need a lock to handle the case where parallel mount
78 * threads are populating the mnttab cache simultaneously. The
79 * lock only protects the integrity of the avl tree, and does
80 * not protect the contents of the mnttab entries themselves.
82 pthread_mutex_t libzfs_mnttab_cache_lock;
83 avl_tree_t libzfs_mnttab_cache;
85 libzfs_fru_t **libzfs_fru_hash;
86 libzfs_fru_t *libzfs_fru_list;
87 char libzfs_chassis_id[256];
88 boolean_t libzfs_prop_debug;
92 libzfs_handle_t *zfs_hdl;
93 zpool_handle_t *zpool_hdl;
94 char zfs_name[ZFS_MAX_DATASET_NAME_LEN];
95 zfs_type_t zfs_type; /* type including snapshot */
96 zfs_type_t zfs_head_type; /* type excluding snapshot */
97 dmu_objset_stats_t zfs_dmustats;
99 nvlist_t *zfs_user_props;
100 nvlist_t *zfs_recvd_props;
101 boolean_t zfs_mntcheck;
103 uint8_t *zfs_props_table;
107 * This is different from checking zfs_type, because it will also catch
108 * snapshots of volumes.
110 #define ZFS_IS_VOLUME(zhp) ((zhp)->zfs_head_type == ZFS_TYPE_VOLUME)
112 struct zpool_handle {
113 libzfs_handle_t *zpool_hdl;
114 zpool_handle_t *zpool_next;
115 char zpool_name[ZFS_MAX_DATASET_NAME_LEN];
117 size_t zpool_config_size;
118 nvlist_t *zpool_config;
119 nvlist_t *zpool_old_config;
120 nvlist_t *zpool_props;
121 diskaddr_t zpool_start_block;
131 * The following can be used as a bitmask and any new values
132 * added must preserve that capability.
135 SHARED_NOT_SHARED = 0x0,
140 #define CONFIG_BUF_MINSIZE 262144
142 int zfs_error(libzfs_handle_t *, int, const char *);
143 int zfs_error_fmt(libzfs_handle_t *, int, const char *, ...);
144 void zfs_error_aux(libzfs_handle_t *, const char *, ...);
145 void *zfs_alloc(libzfs_handle_t *, size_t);
146 void *zfs_realloc(libzfs_handle_t *, void *, size_t, size_t);
147 char *zfs_asprintf(libzfs_handle_t *, const char *, ...);
148 char *zfs_strdup(libzfs_handle_t *, const char *);
149 int no_memory(libzfs_handle_t *);
151 int zfs_standard_error(libzfs_handle_t *, int, const char *);
152 int zfs_standard_error_fmt(libzfs_handle_t *, int, const char *, ...);
153 int zpool_standard_error(libzfs_handle_t *, int, const char *);
154 int zpool_standard_error_fmt(libzfs_handle_t *, int, const char *, ...);
156 int get_dependents(libzfs_handle_t *, boolean_t, const char *, char ***,
158 zfs_handle_t *make_dataset_handle_zc(libzfs_handle_t *, zfs_cmd_t *);
159 zfs_handle_t *make_dataset_simple_handle_zc(zfs_handle_t *, zfs_cmd_t *);
161 int zprop_parse_value(libzfs_handle_t *, nvpair_t *, int, zfs_type_t,
162 nvlist_t *, char **, uint64_t *, const char *);
163 int zprop_expand_list(libzfs_handle_t *hdl, zprop_list_t **plp,
167 * Use this changelist_gather() flag to force attempting mounts
168 * on each change node regardless of whether or not it is currently
171 #define CL_GATHER_MOUNT_ALWAYS 0x01
173 * Use this changelist_gather() flag to prevent unmounting of file systems.
175 #define CL_GATHER_DONT_UNMOUNT 0x02
177 typedef struct prop_changelist prop_changelist_t;
179 int zcmd_alloc_dst_nvlist(libzfs_handle_t *, zfs_cmd_t *, size_t);
180 int zcmd_write_src_nvlist(libzfs_handle_t *, zfs_cmd_t *, nvlist_t *);
181 int zcmd_write_conf_nvlist(libzfs_handle_t *, zfs_cmd_t *, nvlist_t *);
182 int zcmd_expand_dst_nvlist(libzfs_handle_t *, zfs_cmd_t *);
183 int zcmd_read_dst_nvlist(libzfs_handle_t *, zfs_cmd_t *, nvlist_t **);
184 void zcmd_free_nvlists(zfs_cmd_t *);
186 int changelist_prefix(prop_changelist_t *);
187 int changelist_postfix(prop_changelist_t *);
188 void changelist_rename(prop_changelist_t *, const char *, const char *);
189 void changelist_remove(prop_changelist_t *, const char *);
190 void changelist_free(prop_changelist_t *);
191 prop_changelist_t *changelist_gather(zfs_handle_t *, zfs_prop_t, int, int);
192 int changelist_unshare(prop_changelist_t *, zfs_share_proto_t *);
193 int changelist_haszonedchild(prop_changelist_t *);
195 void remove_mountpoint(zfs_handle_t *);
196 int create_parents(libzfs_handle_t *, char *, int);
197 boolean_t isa_child_of(const char *dataset, const char *parent);
199 zfs_handle_t *make_dataset_handle(libzfs_handle_t *, const char *);
200 zfs_handle_t *make_bookmark_handle(zfs_handle_t *, const char *,
203 int zpool_open_silent(libzfs_handle_t *, const char *, zpool_handle_t **);
205 boolean_t zpool_name_valid(libzfs_handle_t *, boolean_t, const char *);
207 int zfs_validate_name(libzfs_handle_t *hdl, const char *path, int type,
208 boolean_t modifying);
210 void namespace_clear(libzfs_handle_t *);
213 * libshare (sharemgr) interfaces used internally.
216 extern int zfs_init_libshare(libzfs_handle_t *, int);
217 extern int zfs_parse_options(char *, zfs_share_proto_t);
219 extern int zfs_unshare_proto(zfs_handle_t *,
220 const char *, zfs_share_proto_t *);
222 extern void libzfs_fru_clear(libzfs_handle_t *, boolean_t);
228 #endif /* _LIBZFS_IMPL_H */