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LU-8851 nodemap: add uid/gid only flags to control mapping
[fs/lustre-release.git] / lustre / include / lustre_nodemap.h
index e5b26f7..d8553e9 100644 (file)
@@ -15,7 +15,7 @@
  *
  * You should have received a copy of the GNU General Public License
  * version 2 along with this program; If not, see
- * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
+ * http://www.gnu.org/licenses/gpl-2.0.html
  *
  * GPL HEADER END
  */
@@ -48,6 +48,12 @@ enum nodemap_tree_type {
        NODEMAP_CLIENT_TO_FS,
 };
 
+enum nodemap_mapping_modes {
+       NODEMAP_MAP_BOTH,
+       NODEMAP_MAP_UID_ONLY,
+       NODEMAP_MAP_GID_ONLY,
+};
+
 struct nodemap_pde {
        char                     npe_name[LUSTRE_NODEMAP_NAME_LENGTH + 1];
        struct proc_dir_entry   *npe_proc_entry;
@@ -64,7 +70,10 @@ struct lu_nodemap {
        char                     nm_name[LUSTRE_NODEMAP_NAME_LENGTH + 1];
        /* flags to govern nodemap behavior */
        bool                     nmf_trust_client_ids:1,
-                                nmf_allow_root_access:1;
+                                nmf_deny_unknown:1,
+                                nmf_allow_root_access:1,
+                                nmf_map_uid_only:1,
+                                nmf_map_gid_only:1;
        /* unique ID set by MGS */
        unsigned int             nm_id;
        /* nodemap ref counter */
@@ -91,6 +100,8 @@ struct lu_nodemap {
        /* access by nodemap name */
        struct hlist_node        nm_hash;
        struct nodemap_pde      *nm_pde_data;
+       /* fileset the nodes of this nodemap are restricted to */
+       char                     nm_fileset[PATH_MAX+1];
 
        /* used when loading/unloading nodemaps */
        struct list_head         nm_list;
@@ -101,8 +112,9 @@ struct lu_nodemap {
  * not be needed.
  */
 struct nm_config_file {
-       struct dt_object        *ncf_obj;
-       struct list_head        ncf_list;
+       struct local_oid_storage        *ncf_los;
+       struct dt_object                *ncf_obj;
+       struct list_head                 ncf_list;
 };
 
 void nodemap_activate(const bool value);
@@ -116,6 +128,8 @@ int nodemap_add_range(const char *name, const lnet_nid_t nid[2]);
 int nodemap_del_range(const char *name, const lnet_nid_t nid[2]);
 int nodemap_set_allow_root(const char *name, bool allow_root);
 int nodemap_set_trust_client_ids(const char *name, bool trust_client_ids);
+int nodemap_set_deny_unknown(const char *name, bool deny_unknown);
+int nodemap_set_mapping_mode(const char *name, enum nodemap_mapping_modes mode);
 int nodemap_set_squash_uid(const char *name, uid_t uid);
 int nodemap_set_squash_gid(const char *name, gid_t gid);
 bool nodemap_can_setquota(const struct lu_nodemap *nodemap);
@@ -123,16 +137,78 @@ int nodemap_add_idmap(const char *name, enum nodemap_id_type id_type,
                      const __u32 map[2]);
 int nodemap_del_idmap(const char *name, enum nodemap_id_type id_type,
                      const __u32 map[2]);
+int nodemap_set_fileset(const char *name, const char *fileset);
+char *nodemap_get_fileset(const struct lu_nodemap *nodemap);
 __u32 nodemap_map_id(struct lu_nodemap *nodemap,
                     enum nodemap_id_type id_type,
                     enum nodemap_tree_type tree_type, __u32 id);
 ssize_t nodemap_map_acl(struct lu_nodemap *nodemap, void *buf, size_t size,
                        enum nodemap_tree_type tree_type);
+#ifdef HAVE_SERVER_SUPPORT
 void nodemap_test_nid(lnet_nid_t nid, char *name_buf, size_t name_len);
-__u32 nodemap_test_id(lnet_nid_t nid, enum nodemap_id_type idtype,
-                     __u32 client_id);
-struct nm_config_file *nm_config_file_register(const struct lu_env *env,
-                                              struct dt_object *obj);
-void nm_config_file_deregister(const struct lu_env *env,
-                              struct nm_config_file *ncf);
+#else
+#define nodemap_test_nid(nid, name_buf, name_len) do {} while(0)
+#endif
+int nodemap_test_id(lnet_nid_t nid, enum nodemap_id_type idtype,
+                   __u32 client_id, __u32 *fs_id);
+
+struct nm_config_file *nm_config_file_register_mgs(const struct lu_env *env,
+                                                  struct dt_object *obj,
+                                                  struct local_oid_storage *los);
+struct dt_device;
+struct nm_config_file *nm_config_file_register_tgt(const struct lu_env *env,
+                                                  struct dt_device *dev,
+                                                  struct local_oid_storage *los);
+void nm_config_file_deregister_mgs(const struct lu_env *env,
+                                  struct nm_config_file *ncf);
+void nm_config_file_deregister_tgt(const struct lu_env *env,
+                                  struct nm_config_file *ncf);
+struct lu_nodemap *nodemap_get_from_exp(struct obd_export *exp);
+void nodemap_putref(struct lu_nodemap *nodemap);
+
+#ifdef HAVE_SERVER_SUPPORT
+struct nodemap_range_tree {
+       struct interval_node *nmrt_range_interval_root;
+       unsigned int nmrt_range_highest_id;
+};
+
+struct nodemap_config {
+       /* Highest numerical lu_nodemap.nm_id defined */
+       unsigned int nmc_nodemap_highest_id;
+
+       /* Simple flag to determine if nodemaps are active */
+       bool nmc_nodemap_is_active;
+
+       /* Pointer to default nodemap as it is needed more often */
+       struct lu_nodemap *nmc_default_nodemap;
+
+       /**
+        * Lock required to access the range tree.
+        */
+       struct rw_semaphore nmc_range_tree_lock;
+       struct nodemap_range_tree nmc_range_tree;
+
+       /**
+        * Hash keyed on nodemap name containing all
+        * nodemaps
+        */
+       struct cfs_hash *nmc_nodemap_hash;
+};
+
+struct nodemap_config *nodemap_config_alloc(void);
+void nodemap_config_dealloc(struct nodemap_config *config);
+void nodemap_config_set_active_mgc(struct nodemap_config *config);
+
+int nodemap_process_idx_pages(struct nodemap_config *config, union lu_page *lip,
+                             struct lu_nodemap **recent_nodemap);
+
+#else /* disable nodemap processing in MGC of non-servers */
+static inline int nodemap_process_idx_pages(void *config,
+                                           union lu_page *lip,
+                                           struct lu_nodemap **recent_nodemap)
+{ return 0; }
+#endif /* HAVE_SERVER_SUPPORT */
+
+int nodemap_get_config_req(struct obd_device *mgs_obd,
+                          struct ptlrpc_request *req);
 #endif /* _LUSTRE_NODEMAP_H */