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8115 parallel zfs mount
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--- old/usr/src/lib/libzfs/common/libzfs_impl.h
+++ new/usr/src/lib/libzfs/common/libzfs_impl.h
1 1 /*
2 2 * CDDL HEADER SART
3 3 *
4 4 * The contents of this file are subject to the terms of the
5 5 * Common Development and Distribution License (the "License").
6 6 * You may not use this file except in compliance with the License.
7 7 *
8 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 9 * or http://www.opensolaris.org/os/licensing.
10 10 * See the License for the specific language governing permissions
11 11 * and limitations under the License.
12 12 *
13 13 * When distributing Covered Code, include this CDDL HEADER in each
14 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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15 15 * If applicable, add the following below this CDDL HEADER, with the
16 16 * fields enclosed by brackets "[]" replaced with your own identifying
17 17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 18 *
19 19 * CDDL HEADER END
20 20 */
21 21
22 22 /*
23 23 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
24 24 * Copyright (c) 2011 Pawel Jakub Dawidek. All rights reserved.
25 - * Copyright (c) 2011, 2016 by Delphix. All rights reserved.
25 + * Copyright (c) 2011, 2017 by Delphix. All rights reserved.
26 26 */
27 27
28 28 #ifndef _LIBZFS_IMPL_H
29 29 #define _LIBZFS_IMPL_H
30 30
31 31 #include <sys/fs/zfs.h>
32 32 #include <sys/spa.h>
33 33 #include <sys/nvpair.h>
34 34 #include <sys/dmu.h>
35 35 #include <sys/zfs_ioctl.h>
36 +#include <synch.h>
36 37
37 38 #include <libuutil.h>
38 39 #include <libzfs.h>
39 40 #include <libshare.h>
40 41 #include <libzfs_core.h>
41 42
42 43 #include <fm/libtopo.h>
43 44
44 45 #ifdef __cplusplus
45 46 extern "C" {
46 47 #endif
47 48
48 49 #ifdef VERIFY
49 50 #undef VERIFY
50 51 #endif
51 52 #define VERIFY verify
52 53
53 54 typedef struct libzfs_fru {
54 55 char *zf_device;
55 56 char *zf_fru;
56 57 struct libzfs_fru *zf_chain;
57 58 struct libzfs_fru *zf_next;
58 59 } libzfs_fru_t;
59 60
60 61 struct libzfs_handle {
61 62 int libzfs_error;
62 63 int libzfs_fd;
63 64 FILE *libzfs_mnttab;
64 65 FILE *libzfs_sharetab;
65 66 zpool_handle_t *libzfs_pool_handles;
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66 67 uu_avl_pool_t *libzfs_ns_avlpool;
67 68 uu_avl_t *libzfs_ns_avl;
68 69 uint64_t libzfs_ns_gen;
69 70 int libzfs_desc_active;
70 71 char libzfs_action[1024];
71 72 char libzfs_desc[1024];
72 73 int libzfs_printerr;
73 74 int libzfs_storeerr; /* stuff error messages into buffer */
74 75 void *libzfs_sharehdl; /* libshare handle */
75 76 boolean_t libzfs_mnttab_enable;
77 + /*
78 + * We need a lock to handle the case where parallel mount threads
79 + * are populating the mnttab cache simultaneously. The lock only
80 + * protects the integrity of of the avl tree, and does not protect
81 + * the contents of the mnttab entries themselves.
82 + */
83 + mutex_t libzfs_mnttab_cache_lock;
76 84 avl_tree_t libzfs_mnttab_cache;
77 85 int libzfs_pool_iter;
78 86 topo_hdl_t *libzfs_topo_hdl;
79 87 libzfs_fru_t **libzfs_fru_hash;
80 88 libzfs_fru_t *libzfs_fru_list;
81 89 char libzfs_chassis_id[256];
82 90 boolean_t libzfs_prop_debug;
83 91 };
84 92
85 93 struct zfs_handle {
86 94 libzfs_handle_t *zfs_hdl;
87 95 zpool_handle_t *zpool_hdl;
88 96 char zfs_name[ZFS_MAX_DATASET_NAME_LEN];
89 97 zfs_type_t zfs_type; /* type including snapshot */
90 98 zfs_type_t zfs_head_type; /* type excluding snapshot */
91 99 dmu_objset_stats_t zfs_dmustats;
92 100 nvlist_t *zfs_props;
93 101 nvlist_t *zfs_user_props;
94 102 nvlist_t *zfs_recvd_props;
95 103 boolean_t zfs_mntcheck;
96 104 char *zfs_mntopts;
97 105 uint8_t *zfs_props_table;
98 106 };
99 107
100 108 /*
101 109 * This is different from checking zfs_type, because it will also catch
102 110 * snapshots of volumes.
103 111 */
104 112 #define ZFS_IS_VOLUME(zhp) ((zhp)->zfs_head_type == ZFS_TYPE_VOLUME)
105 113
106 114 struct zpool_handle {
107 115 libzfs_handle_t *zpool_hdl;
108 116 zpool_handle_t *zpool_next;
109 117 char zpool_name[ZFS_MAX_DATASET_NAME_LEN];
110 118 int zpool_state;
111 119 size_t zpool_config_size;
112 120 nvlist_t *zpool_config;
113 121 nvlist_t *zpool_old_config;
114 122 nvlist_t *zpool_props;
115 123 diskaddr_t zpool_start_block;
116 124 };
117 125
118 126 typedef enum {
119 127 PROTO_NFS = 0,
120 128 PROTO_SMB = 1,
121 129 PROTO_END = 2
122 130 } zfs_share_proto_t;
123 131
124 132 /*
125 133 * The following can be used as a bitmask and any new values
126 134 * added must preserve that capability.
127 135 */
128 136 typedef enum {
129 137 SHARED_NOT_SHARED = 0x0,
130 138 SHARED_NFS = 0x2,
131 139 SHARED_SMB = 0x4
132 140 } zfs_share_type_t;
133 141
134 142 #define CONFIG_BUF_MINSIZE 65536
135 143
136 144 int zfs_error(libzfs_handle_t *, int, const char *);
137 145 int zfs_error_fmt(libzfs_handle_t *, int, const char *, ...);
138 146 void zfs_error_aux(libzfs_handle_t *, const char *, ...);
139 147 void *zfs_alloc(libzfs_handle_t *, size_t);
140 148 void *zfs_realloc(libzfs_handle_t *, void *, size_t, size_t);
141 149 char *zfs_asprintf(libzfs_handle_t *, const char *, ...);
142 150 char *zfs_strdup(libzfs_handle_t *, const char *);
143 151 int no_memory(libzfs_handle_t *);
144 152
145 153 int zfs_standard_error(libzfs_handle_t *, int, const char *);
146 154 int zfs_standard_error_fmt(libzfs_handle_t *, int, const char *, ...);
147 155 int zpool_standard_error(libzfs_handle_t *, int, const char *);
148 156 int zpool_standard_error_fmt(libzfs_handle_t *, int, const char *, ...);
149 157
150 158 int get_dependents(libzfs_handle_t *, boolean_t, const char *, char ***,
151 159 size_t *);
152 160 zfs_handle_t *make_dataset_handle_zc(libzfs_handle_t *, zfs_cmd_t *);
153 161 zfs_handle_t *make_dataset_simple_handle_zc(zfs_handle_t *, zfs_cmd_t *);
154 162
155 163 int zprop_parse_value(libzfs_handle_t *, nvpair_t *, int, zfs_type_t,
156 164 nvlist_t *, char **, uint64_t *, const char *);
157 165 int zprop_expand_list(libzfs_handle_t *hdl, zprop_list_t **plp,
158 166 zfs_type_t type);
159 167
160 168 /*
161 169 * Use this changelist_gather() flag to force attempting mounts
162 170 * on each change node regardless of whether or not it is currently
163 171 * mounted.
164 172 */
165 173 #define CL_GATHER_MOUNT_ALWAYS 1
166 174
167 175 typedef struct prop_changelist prop_changelist_t;
168 176
169 177 int zcmd_alloc_dst_nvlist(libzfs_handle_t *, zfs_cmd_t *, size_t);
170 178 int zcmd_write_src_nvlist(libzfs_handle_t *, zfs_cmd_t *, nvlist_t *);
171 179 int zcmd_write_conf_nvlist(libzfs_handle_t *, zfs_cmd_t *, nvlist_t *);
172 180 int zcmd_expand_dst_nvlist(libzfs_handle_t *, zfs_cmd_t *);
173 181 int zcmd_read_dst_nvlist(libzfs_handle_t *, zfs_cmd_t *, nvlist_t **);
174 182 void zcmd_free_nvlists(zfs_cmd_t *);
175 183
176 184 int changelist_prefix(prop_changelist_t *);
177 185 int changelist_postfix(prop_changelist_t *);
178 186 void changelist_rename(prop_changelist_t *, const char *, const char *);
179 187 void changelist_remove(prop_changelist_t *, const char *);
180 188 void changelist_free(prop_changelist_t *);
181 189 prop_changelist_t *changelist_gather(zfs_handle_t *, zfs_prop_t, int, int);
182 190 int changelist_unshare(prop_changelist_t *, zfs_share_proto_t *);
183 191 int changelist_haszonedchild(prop_changelist_t *);
184 192
185 193 void remove_mountpoint(zfs_handle_t *);
186 194 int create_parents(libzfs_handle_t *, char *, int);
187 195 boolean_t isa_child_of(const char *dataset, const char *parent);
188 196
189 197 zfs_handle_t *make_dataset_handle(libzfs_handle_t *, const char *);
190 198 zfs_handle_t *make_bookmark_handle(zfs_handle_t *, const char *,
191 199 nvlist_t *props);
192 200
193 201 int zpool_open_silent(libzfs_handle_t *, const char *, zpool_handle_t **);
194 202
195 203 boolean_t zpool_name_valid(libzfs_handle_t *, boolean_t, const char *);
196 204
197 205 int zfs_validate_name(libzfs_handle_t *hdl, const char *path, int type,
198 206 boolean_t modifying);
199 207
200 208 void namespace_clear(libzfs_handle_t *);
201 209
202 210 /*
203 211 * libshare (sharemgr) interfaces used internally.
204 212 */
205 213
206 214 extern int zfs_init_libshare(libzfs_handle_t *, int);
207 215 extern int zfs_parse_options(char *, zfs_share_proto_t);
208 216
209 217 extern int zfs_unshare_proto(zfs_handle_t *,
210 218 const char *, zfs_share_proto_t *);
211 219
212 220 extern void libzfs_fru_clear(libzfs_handle_t *, boolean_t);
213 221
214 222 #ifdef __cplusplus
215 223 }
216 224 #endif
217 225
218 226 #endif /* _LIBZFS_IMPL_H */
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