4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.gnu.org/licenses/gpl-2.0.html
23 * Copyright (C) 2013, Trustees of Indiana University
25 * Copyright (c) 2017, Intel Corporation.
27 * Author: Joshua Walgenbach <jjw@iu.edu>
30 #ifndef _LUSTRE_NODEMAP_H
31 #define _LUSTRE_NODEMAP_H
33 #include <uapi/linux/lustre/lustre_idl.h>
35 #define LUSTRE_NODEMAP_NAME "nodemap"
37 #define LUSTRE_NODEMAP_DEFAULT_ID 0
39 /** enums containing the types of ids contained in a nodemap
40 * kept so other modules (mgs, mdt, etc) can define the type
44 enum nodemap_id_type {
49 enum nodemap_tree_type {
54 enum nodemap_mapping_modes {
61 char npe_name[LUSTRE_NODEMAP_NAME_LENGTH + 1];
62 struct proc_dir_entry *npe_proc_entry;
63 struct list_head npe_list_member;
66 /** The nodemap id 0 will be the default nodemap. It will have a configuration
67 * set by the MGS, but no ranges will be allowed as all NIDs that do not map
68 * will be added to the default nodemap
72 /* human readable ID */
73 char nm_name[LUSTRE_NODEMAP_NAME_LENGTH + 1];
74 /* flags to govern nodemap behavior */
75 bool nmf_trust_client_ids:1,
77 nmf_allow_root_access:1,
80 /* unique ID set by MGS */
82 /* nodemap ref counter */
84 /* UID to squash unmapped UIDs */
86 /* GID to squash unmapped GIDs */
89 struct list_head nm_ranges;
90 /* lock for idmap red/black trees */
91 struct rw_semaphore nm_idmap_lock;
92 /* UID map keyed by local UID */
93 struct rb_root nm_fs_to_client_uidmap;
94 /* UID map keyed by remote UID */
95 struct rb_root nm_client_to_fs_uidmap;
96 /* GID map keyed by local UID */
97 struct rb_root nm_fs_to_client_gidmap;
98 /* GID map keyed by remote UID */
99 struct rb_root nm_client_to_fs_gidmap;
100 /* attached client members of this nodemap */
101 struct mutex nm_member_list_lock;
102 struct list_head nm_member_list;
103 /* access by nodemap name */
104 struct hlist_node nm_hash;
105 struct nodemap_pde *nm_pde_data;
106 /* fileset the nodes of this nodemap are restricted to */
107 char nm_fileset[PATH_MAX+1];
109 /* used when loading/unloading nodemaps */
110 struct list_head nm_list;
113 /* Store handles to local MGC storage to save config locally. In future
114 * versions of nodemap, mgc will receive the config directly and so this might
117 struct nm_config_file {
118 struct local_oid_storage *ncf_los;
119 struct dt_object *ncf_obj;
120 struct list_head ncf_list;
123 void nodemap_activate(const bool value);
124 int nodemap_add(const char *nodemap_name);
125 int nodemap_del(const char *nodemap_name);
126 int nodemap_add_member(lnet_nid_t nid, struct obd_export *exp);
127 void nodemap_del_member(struct obd_export *exp);
128 int nodemap_parse_range(const char *range_string, lnet_nid_t range[2]);
129 int nodemap_parse_idmap(char *idmap_string, __u32 idmap[2]);
130 int nodemap_add_range(const char *name, const lnet_nid_t nid[2]);
131 int nodemap_del_range(const char *name, const lnet_nid_t nid[2]);
132 int nodemap_set_allow_root(const char *name, bool allow_root);
133 int nodemap_set_trust_client_ids(const char *name, bool trust_client_ids);
134 int nodemap_set_deny_unknown(const char *name, bool deny_unknown);
135 int nodemap_set_mapping_mode(const char *name, enum nodemap_mapping_modes mode);
136 int nodemap_set_squash_uid(const char *name, uid_t uid);
137 int nodemap_set_squash_gid(const char *name, gid_t gid);
138 bool nodemap_can_setquota(const struct lu_nodemap *nodemap);
139 int nodemap_add_idmap(const char *name, enum nodemap_id_type id_type,
141 int nodemap_del_idmap(const char *name, enum nodemap_id_type id_type,
143 int nodemap_set_fileset(const char *name, const char *fileset);
144 char *nodemap_get_fileset(const struct lu_nodemap *nodemap);
145 __u32 nodemap_map_id(struct lu_nodemap *nodemap,
146 enum nodemap_id_type id_type,
147 enum nodemap_tree_type tree_type, __u32 id);
148 ssize_t nodemap_map_acl(struct lu_nodemap *nodemap, void *buf, size_t size,
149 enum nodemap_tree_type tree_type);
150 #ifdef HAVE_SERVER_SUPPORT
151 void nodemap_test_nid(lnet_nid_t nid, char *name_buf, size_t name_len);
153 #define nodemap_test_nid(nid, name_buf, name_len) do {} while(0)
155 int nodemap_test_id(lnet_nid_t nid, enum nodemap_id_type idtype,
156 __u32 client_id, __u32 *fs_id);
158 struct nm_config_file *nm_config_file_register_mgs(const struct lu_env *env,
159 struct dt_object *obj,
160 struct local_oid_storage *los);
162 struct nm_config_file *nm_config_file_register_tgt(const struct lu_env *env,
163 struct dt_device *dev,
164 struct local_oid_storage *los);
165 void nm_config_file_deregister_mgs(const struct lu_env *env,
166 struct nm_config_file *ncf);
167 void nm_config_file_deregister_tgt(const struct lu_env *env,
168 struct nm_config_file *ncf);
169 struct lu_nodemap *nodemap_get_from_exp(struct obd_export *exp);
170 void nodemap_putref(struct lu_nodemap *nodemap);
172 #ifdef HAVE_SERVER_SUPPORT
173 struct nodemap_range_tree {
174 struct interval_node *nmrt_range_interval_root;
175 unsigned int nmrt_range_highest_id;
178 struct nodemap_config {
179 /* Highest numerical lu_nodemap.nm_id defined */
180 unsigned int nmc_nodemap_highest_id;
182 /* Simple flag to determine if nodemaps are active */
183 bool nmc_nodemap_is_active;
185 /* Pointer to default nodemap as it is needed more often */
186 struct lu_nodemap *nmc_default_nodemap;
189 * Lock required to access the range tree.
191 struct rw_semaphore nmc_range_tree_lock;
192 struct nodemap_range_tree nmc_range_tree;
195 * Hash keyed on nodemap name containing all
198 struct cfs_hash *nmc_nodemap_hash;
201 struct nodemap_config *nodemap_config_alloc(void);
202 void nodemap_config_dealloc(struct nodemap_config *config);
203 void nodemap_config_set_active_mgc(struct nodemap_config *config);
205 int nodemap_process_idx_pages(struct nodemap_config *config, union lu_page *lip,
206 struct lu_nodemap **recent_nodemap);
208 #else /* disable nodemap processing in MGC of non-servers */
209 static inline int nodemap_process_idx_pages(void *config,
211 struct lu_nodemap **recent_nodemap)
213 #endif /* HAVE_SERVER_SUPPORT */
215 int nodemap_get_config_req(struct obd_device *mgs_obd,
216 struct ptlrpc_request *req);
217 #endif /* _LUSTRE_NODEMAP_H */