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 
22 /*
23  * Copyright (c) 2006, 2010, Oracle and/or its affiliates. All rights reserved.
24  * Copyright 2018 Nexenta Systems, Inc.  All rights reserved.
25  * Copyright (c) 2016 by Delphix. All rights reserved.
26  */
27 
28 /*
29  * basic API declarations for share management
30  */
31 
32 #ifndef _LIBSHARE_H
33 #define	_LIBSHARE_H
34 
35 #ifdef	__cplusplus
36 extern "C" {
37 #endif
38 
39 #include <sys/types.h>
40 #include <sys/nvpair.h>
41 #include <libzfs.h>
42 
43 /*
44  * Basic datatypes for most functions
45  */
46 typedef void *sa_group_t;
47 typedef void *sa_share_t;
48 typedef void *sa_property_t;
49 typedef void *sa_optionset_t;
50 typedef void *sa_security_t;
51 typedef void *sa_protocol_properties_t;
52 typedef void *sa_resource_t;
53 
54 typedef void *sa_handle_t;	/* opaque handle to access core functions */
55 
56 /*
57  * defined error values
58  */
59 
60 #define	SA_OK			0
61 #define	SA_NO_SUCH_PATH		1	/* provided path doesn't exist */
62 #define	SA_NO_MEMORY		2	/* no memory for data structures */
63 #define	SA_DUPLICATE_NAME	3	/* object name is already in use */
64 #define	SA_BAD_PATH		4	/* not a full path */
65 #define	SA_NO_SUCH_GROUP	5	/* group is not defined */
66 #define	SA_CONFIG_ERR		6	/* system configuration error */
67 #define	SA_SYSTEM_ERR		7	/* system error, use errno */
68 #define	SA_SYNTAX_ERR		8	/* syntax error on command line */
69 #define	SA_NO_PERMISSION	9	/* no permission for operation */
70 #define	SA_BUSY			10	/* resource is busy */
71 #define	SA_NO_SUCH_PROP		11	/* property doesn't exist */
72 #define	SA_INVALID_NAME		12	/* name of object is invalid */
73 #define	SA_INVALID_PROTOCOL	13	/* specified protocol not valid */
74 #define	SA_NOT_ALLOWED		14	/* operation not allowed */
75 #define	SA_BAD_VALUE		15	/* bad value for property */
76 #define	SA_INVALID_SECURITY	16	/* invalid security type */
77 #define	SA_NO_SUCH_SECURITY	17	/* security set not found */
78 #define	SA_VALUE_CONFLICT	18	/* property value conflict */
79 #define	SA_NOT_IMPLEMENTED	19	/* plugin interface not implemented */
80 #define	SA_INVALID_PATH		20	/* path is sub-dir of existing share */
81 #define	SA_NOT_SUPPORTED	21	/* operation not supported for proto */
82 #define	SA_PROP_SHARE_ONLY	22	/* property valid on share only */
83 #define	SA_NOT_SHARED		23	/* path is not shared */
84 #define	SA_NO_SUCH_RESOURCE	24	/* resource not found */
85 #define	SA_RESOURCE_REQUIRED	25	/* resource name is required  */
86 #define	SA_MULTIPLE_ERROR	26	/* multiple protocols reported error */
87 #define	SA_PATH_IS_SUBDIR	27	/* check_path found path is subdir */
88 #define	SA_PATH_IS_PARENTDIR	28	/* check_path found path is parent */
89 #define	SA_NO_SECTION		29	/* protocol requires section info */
90 #define	SA_NO_SUCH_SECTION	30	/* no section found */
91 #define	SA_NO_PROPERTIES	31	/* no properties found */
92 #define	SA_PASSWORD_ENC		32	/* passwords must be encrypted */
93 #define	SA_SHARE_EXISTS		33	/* path or file is already shared */
94 
95 /* API Initialization */
96 /* Both of these do not care about the value of arg in sa_init_arg */
97 #define	SA_INIT_SHARE_API	0x0001	/* init share specific interface */
98 #define	SA_INIT_CONTROL_API	0x0002	/* init control specific interface */
99 
100 /* expects an sa_init_selective_arg_t as an argument */
101 #define	SA_INIT_SHARE_API_SELECTIVE	0x0004	/* only some shares */
102 struct sa_init_selective_arg {
103 	zfs_handle_t **zhandle_arr;
104 	size_t zhandle_len;
105 };
106 typedef struct sa_init_selective_arg sa_init_selective_arg_t;
107 
108 
109 /*
110  * The SA_INIT_ONE_SHARE* initialization options to sa_init* will cause
111  * sa_needs_refrsh() to return true even if nothing else in the system has
112  * changed. If writing code that could possibly need to share/unshare multiple
113  * shares, it is recommended to use SA_INIT_SHARE_API_SELECTIVE.
114  */
115 /* Expects a single char * as input, the name of the share. */
116 #define	SA_INIT_ONE_SHARE_FROM_NAME	0x0008
117 
118 /* Expects a single zfs_handle_t as input, the handle of the share. */
119 #define	SA_INIT_ONE_SHARE_FROM_HANDLE	0x0010
120 
121 /* not part of API returns */
122 #define	SA_LEGACY_ERR		32	/* share/unshare error return */
123 
124 /*
125  * other defined values
126  */
127 
128 #define	SA_MAX_NAME_LEN		100	/* must fit service instance name */
129 #define	SA_MAX_RESOURCE_NAME	255	/* Maximum length of resource name */
130 
131 /* Used in calls to sa_add_share() and sa_add_resource() */
132 #define	SA_SHARE_TRANSIENT	0	/* shared but not across reboot */
133 #define	SA_SHARE_LEGACY		1	/* share is in dfstab only */
134 #define	SA_SHARE_PERMANENT	2	/* share goes to repository */
135 
136 /* sa_check_path() related */
137 #define	SA_CHECK_NORMAL		0	/* only check against active shares */
138 #define	SA_CHECK_STRICT		1	/* check against all shares */
139 
140 /* RBAC related */
141 #define	SA_RBAC_MANAGE	"solaris.smf.manage.shares"
142 #define	SA_RBAC_VALUE	"solaris.smf.value.shares"
143 
144 /*
145  * Feature set bit definitions
146  */
147 
148 #define	SA_FEATURE_NONE		0x0000	/* no feature flags set */
149 #define	SA_FEATURE_RESOURCE	0x0001	/* resource names are required */
150 #define	SA_FEATURE_DFSTAB	0x0002	/* need to manage in dfstab */
151 #define	SA_FEATURE_ALLOWSUBDIRS	0x0004	/* allow subdirs to be shared */
152 #define	SA_FEATURE_ALLOWPARDIRS	0x0008	/* allow parent dirs to be shared */
153 #define	SA_FEATURE_HAS_SECTIONS	0x0010	/* protocol supports sections */
154 #define	SA_FEATURE_ADD_PROPERTIES	0x0020	/* can add properties */
155 #define	SA_FEATURE_SERVER	0x0040	/* protocol supports server mode */
156 
157 /*
158  * legacy files
159  */
160 
161 #define	SA_LEGACY_DFSTAB	"/etc/dfs/dfstab"
162 #define	SA_LEGACY_SHARETAB	"/etc/dfs/sharetab"
163 
164 /*
165  * SMF related
166  */
167 
168 #define	SA_SVC_FMRI_BASE	"svc:/network/shares/group"
169 
170 /* initialization */
171 extern sa_handle_t sa_init(int);
172 extern sa_handle_t sa_init_arg(int, void *);
173 extern void sa_fini(sa_handle_t);
174 extern int sa_service(sa_handle_t);
175 
176 extern int sa_update_config(sa_handle_t);
177 extern boolean_t sa_needs_refresh(sa_handle_t);
178 extern char *sa_errorstr(int);
179 
180 /* protocol names */
181 extern int sa_get_protocols(char ***);
182 extern int sa_valid_protocol(char *);
183 
184 /* group control (create, remove, etc) */
185 extern sa_group_t sa_create_group(sa_handle_t, char *, int *);
186 extern int sa_remove_group(sa_group_t);
187 extern sa_group_t sa_get_group(sa_handle_t, char *);
188 extern sa_group_t sa_get_next_group(sa_group_t);
189 extern char *sa_get_group_attr(sa_group_t, char *);
190 extern int sa_set_group_attr(sa_group_t, char *, char *);
191 extern sa_group_t sa_get_sub_group(sa_group_t);
192 extern int sa_valid_group_name(char *);
193 
194 /* share control */
195 extern sa_share_t sa_add_share(sa_group_t, char *, int, int *);
196 extern int sa_check_path(sa_group_t, char *, int);
197 extern int sa_move_share(sa_group_t, sa_share_t);
198 extern int sa_remove_share(sa_share_t);
199 extern sa_share_t sa_get_share(sa_group_t, char *);
200 extern sa_share_t sa_find_share(sa_handle_t, char *);
201 extern sa_share_t sa_get_next_share(sa_share_t);
202 extern char *sa_get_share_attr(sa_share_t, char *);
203 extern char *sa_get_share_description(sa_share_t);
204 extern sa_group_t sa_get_parent_group(sa_share_t);
205 extern int sa_set_share_attr(sa_share_t, char *, char *);
206 extern int sa_set_share_description(sa_share_t, char *);
207 extern int sa_enable_share(sa_group_t, char *);
208 extern int sa_disable_share(sa_share_t, char *);
209 extern int sa_is_share(void *);
210 
211 /* resource name related */
212 extern sa_resource_t sa_find_resource(sa_handle_t, char *);
213 extern sa_resource_t sa_get_resource(sa_group_t, char *);
214 extern sa_resource_t sa_get_next_resource(sa_resource_t);
215 extern sa_share_t sa_get_resource_parent(sa_resource_t);
216 extern sa_resource_t sa_get_share_resource(sa_share_t, char *);
217 extern sa_resource_t sa_add_resource(sa_share_t, char *, int, int *);
218 extern int sa_remove_resource(sa_resource_t);
219 extern char *sa_get_resource_attr(sa_resource_t, char *);
220 extern int sa_set_resource_attr(sa_resource_t, char *, char *);
221 extern int sa_set_resource_description(sa_resource_t, char *);
222 extern char *sa_get_resource_description(sa_resource_t);
223 extern int sa_enable_resource(sa_resource_t, char *);
224 extern int sa_disable_resource(sa_resource_t, char *);
225 extern int sa_rename_resource(sa_resource_t, char *);
226 extern void sa_fix_resource_name(char *);
227 
228 /* data structure free calls */
229 extern void sa_free_attr_string(char *);
230 extern void sa_free_share_description(char *);
231 
232 /* optionset control */
233 extern sa_optionset_t sa_get_optionset(sa_group_t, char *);
234 extern sa_optionset_t sa_get_next_optionset(sa_group_t);
235 extern char *sa_get_optionset_attr(sa_optionset_t, char *);
236 extern void sa_set_optionset_attr(sa_optionset_t, char *, char *);
237 extern sa_optionset_t sa_create_optionset(sa_group_t, char *);
238 extern int sa_destroy_optionset(sa_optionset_t);
239 extern sa_optionset_t sa_get_derived_optionset(void *, char *, int);
240 extern void sa_free_derived_optionset(sa_optionset_t);
241 
242 /* property functions */
243 extern sa_property_t sa_get_property(sa_optionset_t, char *);
244 extern sa_property_t sa_get_next_property(sa_group_t);
245 extern char *sa_get_property_attr(sa_property_t, char *);
246 extern sa_property_t sa_create_section(char *, char *);
247 extern void sa_set_section_attr(sa_property_t, char *, char *);
248 extern sa_property_t sa_create_property(char *, char *);
249 extern int sa_add_property(void *, sa_property_t);
250 extern int sa_update_property(sa_property_t, char *);
251 extern int sa_remove_property(sa_property_t);
252 extern int sa_commit_properties(sa_optionset_t, int);
253 extern int sa_valid_property(sa_handle_t, void *, char *, sa_property_t);
254 extern int sa_is_persistent(void *);
255 
256 /* security control */
257 extern sa_security_t sa_get_security(sa_group_t, char *, char *);
258 extern sa_security_t sa_get_next_security(sa_security_t);
259 extern char *sa_get_security_attr(sa_optionset_t, char *);
260 extern sa_security_t sa_create_security(sa_group_t, char *, char *);
261 extern int sa_destroy_security(sa_security_t);
262 extern void sa_set_security_attr(sa_security_t, char *, char *);
263 extern sa_optionset_t sa_get_all_security_types(void *, char *, int);
264 extern sa_security_t sa_get_derived_security(void *, char *, char *, int);
265 extern void sa_free_derived_security(sa_security_t);
266 
267 /* protocol specific interfaces */
268 extern int sa_parse_legacy_options(sa_group_t, char *, char *);
269 extern char *sa_proto_legacy_format(char *, sa_group_t, int);
270 extern int sa_is_security(char *, char *);
271 extern sa_protocol_properties_t sa_proto_get_properties(char *);
272 extern uint64_t sa_proto_get_featureset(char *);
273 extern sa_property_t sa_get_protocol_section(sa_protocol_properties_t, char *);
274 extern sa_property_t sa_get_next_protocol_section(sa_property_t, char *);
275 extern sa_property_t sa_get_protocol_property(sa_protocol_properties_t, char *);
276 extern sa_property_t sa_get_next_protocol_property(sa_property_t, char *);
277 extern int sa_set_protocol_property(sa_property_t, char *, char *);
278 extern char *sa_get_protocol_status(char *);
279 extern void sa_format_free(char *);
280 extern sa_protocol_properties_t sa_create_protocol_properties(char *);
281 extern int sa_add_protocol_property(sa_protocol_properties_t, sa_property_t);
282 extern int sa_proto_valid_prop(sa_handle_t, char *, sa_property_t,
283     sa_optionset_t);
284 extern int sa_proto_valid_space(char *, char *);
285 extern char *sa_proto_space_alias(char *, char *);
286 extern int sa_proto_get_transients(sa_handle_t, char *);
287 extern int sa_proto_notify_resource(sa_resource_t, char *);
288 extern int sa_proto_change_notify(sa_share_t, char *);
289 extern int sa_proto_delete_section(char *, char *);
290 
291 /* handle legacy (dfstab/sharetab) files */
292 extern int sa_delete_legacy(sa_share_t, char *);
293 extern int sa_update_legacy(sa_share_t, char *);
294 extern int sa_update_sharetab(sa_share_t, char *);
295 extern int sa_delete_sharetab(sa_handle_t, char *, char *);
296 
297 /* ZFS functions */
298 extern int sa_zfs_is_shared(sa_handle_t, char *);
299 extern int sa_group_is_zfs(sa_group_t);
300 extern int sa_path_is_zfs(char *);
301 extern int sa_zfs_setprop(sa_handle_t, char *, nvlist_t *);
302 
303 /* SA Handle specific functions */
304 extern sa_handle_t sa_find_group_handle(sa_group_t);
305 
306 #ifdef	__cplusplus
307 }
308 #endif
309 
310 #endif /* _LIBSHARE_H */
311