LU-5092 nodemap: users of ted_nodemap should take ref

[fs/lustre-release.git] / lustre / include / lustre_nodemap.h

diff --git a/lustre/include/lustre_nodemap.h b/lustre/include/lustre_nodemap.h
index 23a5f8b..53cb965 100644 (file)
--- a/lustre/include/lustre_nodemap.h
+++ b/lustre/include/lustre_nodemap.h
@@ -27,8 +27,9 @@
 #ifndef _LUSTRE_NODEMAP_H
 #define _LUSTRE_NODEMAP_H
 
+#include <lustre/lustre_idl.h>
+
 #define LUSTRE_NODEMAP_NAME "nodemap"
-#define LUSTRE_NODEMAP_NAME_LENGTH 16
 
 #define LUSTRE_NODEMAP_DEFAULT_ID 0
 
@@ -47,6 +48,12 @@ enum nodemap_tree_type {
        NODEMAP_CLIENT_TO_FS,
 };
 
+struct nodemap_pde {
+       char                     npe_name[LUSTRE_NODEMAP_NAME_LENGTH + 1];
+       struct proc_dir_entry   *npe_proc_entry;
+       struct list_head         npe_list_member;
+};
+
 /** The nodemap id 0 will be the default nodemap. It will have a configuration
  * set by the MGS, but no ranges will be allowed as all NIDs that do not map
  * will be added to the default nodemap
@@ -54,51 +61,64 @@ enum nodemap_tree_type {
 
 struct lu_nodemap {
        /* human readable ID */
-       char                    nm_name[LUSTRE_NODEMAP_NAME_LENGTH + 1];
+       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_block_lookups:1,
-                               nmf_hmac_required:1,
-                               nmf_encryption_required:1;
+       bool                     nmf_trust_client_ids:1,
+                                nmf_allow_root_access:1;
        /* unique ID set by MGS */
-       int                     nm_id;
+       unsigned int             nm_id;
        /* nodemap ref counter */
-       atomic_t                nm_refcount;
+       atomic_t                 nm_refcount;
        /* UID to squash unmapped UIDs */
-       uid_t                   nm_squash_uid;
+       uid_t                    nm_squash_uid;
        /* GID to squash unmapped GIDs */
-       gid_t                   nm_squash_gid;
+       gid_t                    nm_squash_gid;
        /* NID range list */
-       struct list_head        nm_ranges;
+       struct list_head         nm_ranges;
+       /* lock for idmap red/black trees */
+       rwlock_t                 nm_idmap_lock;
        /* UID map keyed by local UID */
-       struct rb_root          nm_fs_to_client_uidmap;
+       struct rb_root           nm_fs_to_client_uidmap;
        /* UID map keyed by remote UID */
-       struct rb_root          nm_client_to_fs_uidmap;
+       struct rb_root           nm_client_to_fs_uidmap;
        /* GID map keyed by local UID */
-       struct rb_root          nm_fs_to_client_gidmap;
+       struct rb_root           nm_fs_to_client_gidmap;
        /* GID map keyed by remote UID */
-       struct rb_root          nm_client_to_fs_gidmap;
-       /* proc directory entry */
-       struct proc_dir_entry   *nm_proc_entry;
+       struct rb_root           nm_client_to_fs_gidmap;
        /* attached client members of this nodemap */
-       struct list_head        nm_exports;
+       struct mutex             nm_member_list_lock;
+       struct list_head         nm_member_list;
        /* access by nodemap name */
-       struct hlist_node       nm_hash;
+       struct hlist_node        nm_hash;
+       struct nodemap_pde      *nm_pde_data;
+
+       /* used when loading/unloading nodemaps */
+       struct list_head         nm_list;
+};
+
+/* Store handles to local MGC storage to save config locally. In future
+ * versions of nodemap, mgc will receive the config directly and so this might
+ * not be needed.
+ */
+struct nm_config_file {
+       struct dt_object        *ncf_obj;
+       struct list_head        ncf_list;
 };
 
 void nodemap_activate(const bool value);
 int nodemap_add(const char *nodemap_name);
 int nodemap_del(const char *nodemap_name);
-struct lu_nodemap *nodemap_classify_nid(lnet_nid_t nid);
+int nodemap_add_member(lnet_nid_t nid, struct obd_export *exp);
+void nodemap_del_member(struct obd_export *exp);
 int nodemap_parse_range(const char *range_string, lnet_nid_t range[2]);
-int nodemap_parse_idmap(const char *idmap_string, __u32 idmap[2]);
+int nodemap_parse_idmap(char *idmap_string, __u32 idmap[2]);
 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_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);
 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,
@@ -106,4 +126,15 @@ int nodemap_del_idmap(const char *name, enum nodemap_id_type id_type,
 __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);
+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);
+struct lu_nodemap *nodemap_get_from_exp(struct obd_export *exp);
+void nodemap_putref(struct lu_nodemap *nodemap);
 #endif /* _LUSTRE_NODEMAP_H */