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 <pawel@dawidek.net>.
25 * All rights reserved.
32 #include <sys/fs/zfs.h>
33 #include <sys/zfs_ioctl.h>
35 #include <sys/nvpair.h>
41 #include "zfs_ioctl_compat.h"
52 typedef struct libzfs_fru {
55 struct libzfs_fru *zf_chain;
56 struct libzfs_fru *zf_next;
59 struct libzfs_handle {
63 FILE *libzfs_sharetab;
64 zpool_handle_t *libzfs_pool_handles;
65 uu_avl_pool_t *libzfs_ns_avlpool;
66 uu_avl_t *libzfs_ns_avl;
67 uint64_t libzfs_ns_gen;
68 int libzfs_desc_active;
69 char libzfs_action[1024];
70 char libzfs_desc[1024];
73 int libzfs_storeerr; /* stuff error messages into buffer */
74 void *libzfs_sharehdl; /* libshare handle */
75 uint_t libzfs_shareflags;
76 boolean_t libzfs_mnttab_enable;
77 avl_tree_t libzfs_mnttab_cache;
79 libzfs_fru_t **libzfs_fru_hash;
80 libzfs_fru_t *libzfs_fru_list;
81 char libzfs_chassis_id[256];
84 #define ZFSSHARE_MISS 0x01 /* Didn't find entry in cache */
87 libzfs_handle_t *zfs_hdl;
88 zpool_handle_t *zpool_hdl;
89 char zfs_name[ZFS_MAXNAMELEN];
90 zfs_type_t zfs_type; /* type including snapshot */
91 zfs_type_t zfs_head_type; /* type excluding snapshot */
92 dmu_objset_stats_t zfs_dmustats;
94 nvlist_t *zfs_user_props;
95 nvlist_t *zfs_recvd_props;
96 boolean_t zfs_mntcheck;
98 uint8_t *zfs_props_table;
102 * This is different from checking zfs_type, because it will also catch
103 * snapshots of volumes.
105 #define ZFS_IS_VOLUME(zhp) ((zhp)->zfs_head_type == ZFS_TYPE_VOLUME)
107 struct zpool_handle {
108 libzfs_handle_t *zpool_hdl;
109 zpool_handle_t *zpool_next;
110 char zpool_name[ZPOOL_MAXNAMELEN];
112 size_t zpool_config_size;
113 nvlist_t *zpool_config;
114 nvlist_t *zpool_old_config;
115 nvlist_t *zpool_props;
116 diskaddr_t zpool_start_block;
126 * The following can be used as a bitmask and any new values
127 * added must preserve that capability.
130 SHARED_NOT_SHARED = 0x0,
135 int zfs_error(libzfs_handle_t *, int, const char *);
136 int zfs_error_fmt(libzfs_handle_t *, int, const char *, ...);
137 void zfs_error_aux(libzfs_handle_t *, const char *, ...);
138 void *zfs_alloc(libzfs_handle_t *, size_t);
139 void *zfs_realloc(libzfs_handle_t *, void *, size_t, size_t);
140 char *zfs_asprintf(libzfs_handle_t *, const char *, ...);
141 char *zfs_strdup(libzfs_handle_t *, const char *);
142 int no_memory(libzfs_handle_t *);
144 int zfs_standard_error(libzfs_handle_t *, int, const char *);
145 int zfs_standard_error_fmt(libzfs_handle_t *, int, const char *, ...);
146 int zpool_standard_error(libzfs_handle_t *, int, const char *);
147 int zpool_standard_error_fmt(libzfs_handle_t *, int, const char *, ...);
149 int get_dependents(libzfs_handle_t *, boolean_t, const char *, char ***,
153 int zprop_parse_value(libzfs_handle_t *, nvpair_t *, int, zfs_type_t,
154 nvlist_t *, char **, uint64_t *, const char *);
155 int zprop_expand_list(libzfs_handle_t *hdl, zprop_list_t **plp,
159 * Use this changelist_gather() flag to force attempting mounts
160 * on each change node regardless of whether or not it is currently
163 #define CL_GATHER_MOUNT_ALWAYS 0x01
165 * Use this changelist_gather() flag to prevent unmounting of file systems.
167 #define CL_GATHER_DONT_UNMOUNT 0x02
169 typedef struct prop_changelist prop_changelist_t;
171 int zcmd_alloc_dst_nvlist(libzfs_handle_t *, zfs_cmd_t *, size_t);
172 int zcmd_write_src_nvlist(libzfs_handle_t *, zfs_cmd_t *, nvlist_t *);
173 int zcmd_write_conf_nvlist(libzfs_handle_t *, zfs_cmd_t *, nvlist_t *);
174 int zcmd_expand_dst_nvlist(libzfs_handle_t *, zfs_cmd_t *);
175 int zcmd_read_dst_nvlist(libzfs_handle_t *, zfs_cmd_t *, nvlist_t **);
176 void zcmd_free_nvlists(zfs_cmd_t *);
178 int changelist_prefix(prop_changelist_t *);
179 int changelist_postfix(prop_changelist_t *);
180 void changelist_rename(prop_changelist_t *, const char *, const char *);
181 void changelist_remove(prop_changelist_t *, const char *);
182 void changelist_free(prop_changelist_t *);
183 prop_changelist_t *changelist_gather(zfs_handle_t *, zfs_prop_t, int, int);
184 int changelist_unshare(prop_changelist_t *, zfs_share_proto_t *);
185 int changelist_haszonedchild(prop_changelist_t *);
187 void remove_mountpoint(zfs_handle_t *);
188 int create_parents(libzfs_handle_t *, char *, int);
189 boolean_t isa_child_of(const char *dataset, const char *parent);
191 zfs_handle_t *make_dataset_handle(libzfs_handle_t *, const char *);
193 int zpool_open_silent(libzfs_handle_t *, const char *, zpool_handle_t **);
195 boolean_t zpool_name_valid(libzfs_handle_t *, boolean_t, const char *);
197 int zfs_validate_name(libzfs_handle_t *hdl, const char *path, int type,
198 boolean_t modifying);
200 void namespace_clear(libzfs_handle_t *);
203 * libshare (sharemgr) interfaces used internally.
206 extern int zfs_init_libshare(libzfs_handle_t *, int);
207 extern void zfs_uninit_libshare(libzfs_handle_t *);
208 extern int zfs_parse_options(char *, zfs_share_proto_t);
210 extern int zfs_unshare_proto(zfs_handle_t *,
211 const char *, zfs_share_proto_t *);
213 extern void libzfs_fru_clear(libzfs_handle_t *, boolean_t);
216 static int zfs_kernel_version = 0;
219 * This is FreeBSD version of ioctl, because Solaris' ioctl() updates
220 * zc_nvlist_dst_size even if an error is returned, on FreeBSD if an
221 * error is returned zc_nvlist_dst_size won't be updated.
224 zcmd_ioctl(int fd, unsigned long cmd, zfs_cmd_t *zc)
226 size_t oldsize, zfs_kernel_version_size;
227 int version, ret, cflag = ZFS_CMD_COMPAT_NONE;
229 zfs_kernel_version_size = sizeof(zfs_kernel_version);
230 if (zfs_kernel_version == 0) {
231 sysctlbyname("vfs.zfs.version.spa", &zfs_kernel_version,
232 &zfs_kernel_version_size, NULL, 0);
235 if (zfs_kernel_version == SPA_VERSION_15 ||
236 zfs_kernel_version == SPA_VERSION_14 ||
237 zfs_kernel_version == SPA_VERSION_13)
238 cflag = ZFS_CMD_COMPAT_V15;
240 oldsize = zc->zc_nvlist_dst_size;
241 ret = zcmd_ioctl_compat(fd, cmd, zc, cflag);
243 if (ret == 0 && oldsize < zc->zc_nvlist_dst_size) {
250 #define ioctl(fd, cmd, zc) zcmd_ioctl((fd), (cmd), (zc))
257 #endif /* _LIBFS_IMPL_H */