lib/libzfs/include/libzfs_impl.h

   1 /*
   2  * CDDL HEADER SART
   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
  22 /*
  23  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 #ifndef _LIBFS_IMPL_H
  28 #define _LIBFS_IMPL_H
  29
  30 #include <sys/dmu.h>
  31 #include <sys/fs/zfs.h>
  32 #include <sys/zfs_ioctl.h>
  33 #include <sys/zfs_acl.h>
  34 #include <sys/spa.h>
  35 #include <sys/nvpair.h>
  36
  37 #include <libuutil.h>
  38 #include <libzfs.h>
  39 #include <libshare.h>
  40
  41 #ifdef  __cplusplus
  42 extern "C" {
  43 #endif
  44
  45 #ifdef  VERIFY
  46 #undef  VERIFY
  47 #endif
  48 #define VERIFY  verify
  49
  50 struct libzfs_handle {
  51         int libzfs_error;
  52         int libzfs_fd;
  53         FILE *libzfs_mnttab;
  54         FILE *libzfs_sharetab;
  55         zpool_handle_t *libzfs_pool_handles;
  56         uu_avl_pool_t *libzfs_ns_avlpool;
  57         uu_avl_t *libzfs_ns_avl;
  58         uint64_t libzfs_ns_gen;
  59         int libzfs_desc_active;
  60         char libzfs_action[1024];
  61         char libzfs_desc[1024];
  62         char *libzfs_log_str;
  63         int libzfs_printerr;
  64         void *libzfs_sharehdl; /* libshare handle */
  65         uint_t libzfs_shareflags;
  66         boolean_t libzfs_mnttab_enable;
  67         avl_tree_t libzfs_mnttab_cache;
  68 };
  69 #define ZFSSHARE_MISS   0x01    /* Didn't find entry in cache */
  70
  71 struct zfs_handle {
  72         libzfs_handle_t *zfs_hdl;
  73         zpool_handle_t *zpool_hdl;
  74         char zfs_name[ZFS_MAXNAMELEN];
  75         zfs_type_t zfs_type; /* type including snapshot */
  76         zfs_type_t zfs_head_type; /* type excluding snapshot */
  77         dmu_objset_stats_t zfs_dmustats;
  78         nvlist_t *zfs_props;
  79         nvlist_t *zfs_user_props;
  80         boolean_t zfs_mntcheck;
  81         char *zfs_mntopts;
  82         uint8_t *zfs_props_table;
  83 };
  84
  85 /*
  86  * This is different from checking zfs_type, because it will also catch
  87  * snapshots of volumes.
  88  */
  89 #define ZFS_IS_VOLUME(zhp) ((zhp)->zfs_head_type == ZFS_TYPE_VOLUME)
  90
  91 struct zpool_handle {
  92         libzfs_handle_t *zpool_hdl;
  93         zpool_handle_t *zpool_next;
  94         char zpool_name[ZPOOL_MAXNAMELEN];
  95         int zpool_state;
  96         size_t zpool_config_size;
  97         nvlist_t *zpool_config;
  98         nvlist_t *zpool_old_config;
  99         nvlist_t *zpool_props;
 100         diskaddr_t zpool_start_block;
 101 };
 102
 103 typedef  enum {
 104         PROTO_NFS = 0,
 105         PROTO_SMB = 1,
 106         PROTO_END = 2
 107 } zfs_share_proto_t;
 108
 109 /*
 110  * The following can be used as a bitmask and any new values
 111  * added must preserve that capability.
 112  */
 113 typedef enum {
 114         SHARED_NOT_SHARED = 0x0,
 115         SHARED_ISCSI = 0x1,
 116         SHARED_NFS = 0x2,
 117         SHARED_SMB = 0x4
 118 } zfs_share_type_t;
 119
 120 int zfs_error(libzfs_handle_t *, int, const char *);
 121 int zfs_error_fmt(libzfs_handle_t *, int, const char *, ...);
 122 void zfs_error_aux(libzfs_handle_t *, const char *, ...);
 123 void *zfs_alloc(libzfs_handle_t *, size_t);
 124 void *zfs_realloc(libzfs_handle_t *, void *, size_t, size_t);
 125 char *zfs_strdup(libzfs_handle_t *, const char *);
 126 int no_memory(libzfs_handle_t *);
 127
 128 int zfs_standard_error(libzfs_handle_t *, int, const char *);
 129 int zfs_standard_error_fmt(libzfs_handle_t *, int, const char *, ...);
 130 int zpool_standard_error(libzfs_handle_t *, int, const char *);
 131 int zpool_standard_error_fmt(libzfs_handle_t *, int, const char *, ...);
 132
 133 int get_dependents(libzfs_handle_t *, boolean_t, const char *, char ***,
 134     size_t *);
 135
 136
 137 int zprop_parse_value(libzfs_handle_t *, nvpair_t *, int, zfs_type_t,
 138     nvlist_t *, char **, uint64_t *, const char *);
 139 int zprop_expand_list(libzfs_handle_t *hdl, zprop_list_t **plp,
 140     zfs_type_t type);
 141
 142 /*
 143  * Use this changelist_gather() flag to force attempting mounts
 144  * on each change node regardless of whether or not it is currently
 145  * mounted.
 146  */
 147 #define CL_GATHER_MOUNT_ALWAYS  1
 148
 149 typedef struct prop_changelist prop_changelist_t;
 150
 151 int zcmd_alloc_dst_nvlist(libzfs_handle_t *, zfs_cmd_t *, size_t);
 152 int zcmd_write_src_nvlist(libzfs_handle_t *, zfs_cmd_t *, nvlist_t *);
 153 int zcmd_write_conf_nvlist(libzfs_handle_t *, zfs_cmd_t *, nvlist_t *);
 154 int zcmd_expand_dst_nvlist(libzfs_handle_t *, zfs_cmd_t *);
 155 int zcmd_read_dst_nvlist(libzfs_handle_t *, zfs_cmd_t *, nvlist_t **);
 156 void zcmd_free_nvlists(zfs_cmd_t *);
 157
 158 int changelist_prefix(prop_changelist_t *);
 159 int changelist_postfix(prop_changelist_t *);
 160 void changelist_rename(prop_changelist_t *, const char *, const char *);
 161 void changelist_remove(prop_changelist_t *, const char *);
 162 void changelist_free(prop_changelist_t *);
 163 prop_changelist_t *changelist_gather(zfs_handle_t *, zfs_prop_t, int, int);
 164 int changelist_unshare(prop_changelist_t *, zfs_share_proto_t *);
 165 int changelist_haszonedchild(prop_changelist_t *);
 166
 167 void remove_mountpoint(zfs_handle_t *);
 168 int create_parents(libzfs_handle_t *, char *, int);
 169 boolean_t isa_child_of(const char *dataset, const char *parent);
 170
 171 zfs_handle_t *make_dataset_handle(libzfs_handle_t *, const char *);
 172
 173 int zpool_open_silent(libzfs_handle_t *, const char *, zpool_handle_t **);
 174
 175 int zvol_create_link(libzfs_handle_t *, const char *);
 176 int zvol_remove_link(libzfs_handle_t *, const char *);
 177 int zpool_iter_zvol(zpool_handle_t *, int (*)(const char *, void *), void *);
 178 boolean_t zpool_name_valid(libzfs_handle_t *, boolean_t, const char *);
 179
 180 void namespace_clear(libzfs_handle_t *);
 181
 182 /*
 183  * libshare (sharemgr) interfaces used internally.
 184  */
 185
 186 extern int zfs_init_libshare(libzfs_handle_t *, int);
 187 extern void zfs_uninit_libshare(libzfs_handle_t *);
 188 extern int zfs_parse_options(char *, zfs_share_proto_t);
 189
 190 extern int zfs_unshare_proto(zfs_handle_t *,
 191     const char *, zfs_share_proto_t *);
 192 #ifdef  __cplusplus
 193 }
 194 #endif
 195
 196 #endif  /* _LIBFS_IMPL_H */