LU-3527 nodemap: idmap management functions

[fs/lustre-release.git] / lustre / nodemap / nodemap_internal.h

diff --git a/lustre/nodemap/nodemap_internal.h b/lustre/nodemap/nodemap_internal.h
index 7e55136..af3836e 100644 (file)
--- a/lustre/nodemap/nodemap_internal.h
+++ b/lustre/nodemap/nodemap_internal.h
@@ -42,7 +42,7 @@ struct lprocfs_static_vars;
 /* nodemap root proc directory under fs/lustre */
 extern struct proc_dir_entry *proc_lustre_nodemap_root;
 /* flag if nodemap is active */
-extern bool nodemap_idmap_active;
+extern bool nodemap_active;
 
 struct lu_nid_range {
        /* unique id set my mgs */
@@ -55,6 +55,17 @@ struct lu_nid_range {
        struct interval_node     rn_node;
 };
 
+struct lu_idmap {
+       /* uid/gid of client */
+       __u32           id_client;
+       /* uid/gid on filesystem */
+       __u32           id_fs;
+       /* tree mapping client ids to filesystem ids */
+       struct rb_node  id_client_to_fs;
+       /* tree mappung filesystem to client */
+       struct rb_node  id_fs_to_client;
+};
+
 int nodemap_procfs_init(void);
 int lprocfs_nodemap_register(const char *name, bool is_default_nodemap,
                             struct lu_nodemap *nodemap);
@@ -68,5 +79,29 @@ struct lu_nid_range *range_find(lnet_nid_t start_nid, lnet_nid_t end_nid);
 int range_parse_nidstring(char *range_string, lnet_nid_t *start_nid,
                          lnet_nid_t *end_nid);
 void range_init_tree(void);
+struct lu_idmap *idmap_create(__u32 client_id, __u32 fs_id);
+void idmap_insert(enum nodemap_id_type id_type, struct lu_idmap *idmap,
+                struct lu_nodemap *nodemap);
+void idmap_delete(enum nodemap_id_type id_type,  struct lu_idmap *idmap,
+                 struct lu_nodemap *nodemap);
+void idmap_delete_tree(struct lu_nodemap *nodemap);
+struct lu_idmap *idmap_search(struct lu_nodemap *nodemap,
+                             enum nodemap_tree_type,
+                             enum nodemap_id_type id_type,
+                             __u32 id);
 int nodemap_cleanup_nodemaps(void);
+
+struct rb_node *nm_rb_next_postorder(const struct rb_node *node);
+struct rb_node *nm_rb_first_postorder(const struct rb_root *root);
+
+#define nm_rbtree_postorder_for_each_entry_safe(pos, n,                        \
+                                               root, field)            \
+       for (pos = rb_entry(nm_rb_first_postorder(root), typeof(*pos),  \
+                           field),                                     \
+               n = rb_entry(nm_rb_next_postorder(&pos->field),         \
+               typeof(*pos), field);                                   \
+               &pos->field;                                            \
+               pos = n,                                                \
+               n = rb_entry(nm_rb_next_postorder(&pos->field),         \
+                            typeof(*pos), field))
 #endif  /* _NODEMAP_INTERNAL_H */