lustre/ptlrpc/nodemap_internal.h

   1 /*
   2  * GPL HEADER START
   3  *
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   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.
   9  *
  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).
  15  *
  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
  19  *
  20  * GPL HEADER END
  21  */
  22 /*
  23  * Copyright (C) 2013, Trustees of Indiana University
  24  *
  25  * Copyright (c) 2013, 2017, Intel Corporation.
  26  *
  27  * Author: Joshua Walgenbach <jjw@iu.edu>
  28  */
  29
  30 #ifndef _NODEMAP_INTERNAL_H
  31 #define _NODEMAP_INTERNAL_H
  32
  33 #include <lustre_nodemap.h>
  34 #include <lustre_disk.h>
  35 #include <linux/rbtree.h>
  36
  37 #define DEFAULT_NODEMAP "default"
  38
  39 /* Default nobody uid, gid and projid values */
  40 #define NODEMAP_NOBODY_UID 99
  41 #define NODEMAP_NOBODY_GID 99
  42 #define NODEMAP_NOBODY_PROJID 99
  43
  44 struct lprocfs_static_vars;
  45
  46 /* nodemap root proc directory under fs/lustre */
  47 extern struct proc_dir_entry *proc_lustre_nodemap_root;
  48 /* flag if nodemap is active */
  49 extern bool nodemap_active;
  50
  51 extern struct mutex active_config_lock;
  52 extern struct nodemap_config *active_config;
  53
  54 struct lu_nid_range {
  55         /* unique id set by mgs */
  56         unsigned int             rn_id;
  57         /* lu_nodemap containing this range */
  58         struct lu_nodemap       *rn_nodemap;
  59         /* list for nodemap */
  60         struct list_head         rn_list;
  61         /* nid interval tree */
  62         lnet_nid_t               rn_start,
  63                                  rn_end,
  64                                  rn_subtree_last;
  65         struct rb_node           rn_rb;
  66 };
  67
  68 struct lu_idmap {
  69         /* uid/gid of client */
  70         __u32           id_client;
  71         /* uid/gid on filesystem */
  72         __u32           id_fs;
  73         /* tree mapping client ids to filesystem ids */
  74         struct rb_node  id_client_to_fs;
  75         /* tree mappung filesystem to client */
  76         struct rb_node  id_fs_to_client;
  77 };
  78
  79 static inline enum nodemap_idx_type nm_idx_get_type(unsigned int id)
  80 {
  81         return id >> NM_TYPE_SHIFT;
  82 }
  83
  84 static inline __u32 nm_idx_set_type(unsigned int id, enum nodemap_idx_type t)
  85 {
  86         return (id & NM_TYPE_MASK) | (t << NM_TYPE_SHIFT);
  87 }
  88
  89 void nodemap_config_set_active(struct nodemap_config *config);
  90 struct lu_nodemap *nodemap_create(const char *name,
  91                                   struct nodemap_config *config,
  92                                   bool is_default);
  93 void nodemap_putref(struct lu_nodemap *nodemap);
  94 struct lu_nodemap *nodemap_lookup(const char *name);
  95
  96 int nodemap_procfs_init(void);
  97 void nodemap_procfs_exit(void);
  98 int lprocfs_nodemap_register(struct lu_nodemap *nodemap,
  99                              bool is_default_nodemap);
 100 void lprocfs_nodemap_remove(struct nodemap_pde *nodemap_pde);
 101 struct lu_nid_range *nodemap_range_find(lnet_nid_t start_nid,
 102                                         lnet_nid_t end_nid);
 103 struct lu_nid_range *range_create(struct nodemap_range_tree *nm_range_tree,
 104                                   lnet_nid_t start_nid, lnet_nid_t end_nid,
 105                                   struct lu_nodemap *nodemap,
 106                                   unsigned int range_id);
 107 void range_destroy(struct lu_nid_range *range);
 108 int range_insert(struct nodemap_range_tree *nm_range_tree,
 109                  struct lu_nid_range *data);
 110 void range_delete(struct nodemap_range_tree *nm_range_tree,
 111                   struct lu_nid_range *data);
 112 struct lu_nid_range *range_search(struct nodemap_range_tree *nm_range_tree,
 113                                   lnet_nid_t nid);
 114 struct lu_nid_range *range_find(struct nodemap_range_tree *nm_range_tree,
 115                                 lnet_nid_t start_nid, lnet_nid_t end_nid);
 116 int range_parse_nidstring(char *range_string, lnet_nid_t *start_nid,
 117                           lnet_nid_t *end_nid);
 118 void range_init_tree(void);
 119 struct lu_idmap *idmap_create(__u32 client_id, __u32 fs_id);
 120 struct lu_idmap *idmap_insert(enum nodemap_id_type id_type,
 121                               struct lu_idmap *idmap,
 122                               struct lu_nodemap *nodemap);
 123 void idmap_delete(enum nodemap_id_type id_type,  struct lu_idmap *idmap,
 124                   struct lu_nodemap *nodemap);
 125 void idmap_delete_tree(struct lu_nodemap *nodemap);
 126 struct lu_idmap *idmap_search(struct lu_nodemap *nodemap,
 127                               enum nodemap_tree_type,
 128                               enum nodemap_id_type id_type,
 129                               __u32 id);
 130 int nm_member_add(struct lu_nodemap *nodemap, struct obd_export *exp);
 131 void nm_member_del(struct lu_nodemap *nodemap, struct obd_export *exp);
 132 void nm_member_delete_list(struct lu_nodemap *nodemap);
 133 struct lu_nodemap *nodemap_classify_nid(lnet_nid_t nid);
 134 void nm_member_reclassify_nodemap(struct lu_nodemap *nodemap);
 135 void nm_member_revoke_locks(struct lu_nodemap *nodemap);
 136 void nm_member_revoke_locks_always(struct lu_nodemap *nodemap);
 137 void nm_member_revoke_all(void);
 138
 139 int nodemap_add_idmap_helper(struct lu_nodemap *nodemap,
 140                              enum nodemap_id_type id_type,
 141                              const __u32 map[2]);
 142 int nodemap_add_range_helper(struct nodemap_config *config,
 143                              struct lu_nodemap *nodemap,
 144                              const lnet_nid_t nid[2],
 145                              unsigned int range_id);
 146
 147 struct rb_node *nm_rb_next_postorder(const struct rb_node *node);
 148 struct rb_node *nm_rb_first_postorder(const struct rb_root *root);
 149 void nodemap_getref(struct lu_nodemap *nodemap);
 150 void nodemap_putref(struct lu_nodemap *nodemap);
 151 int nm_hash_list_cb(struct cfs_hash *hs, struct cfs_hash_bd *bd,
 152                     struct hlist_node *hnode,
 153                     void *nodemap_list_head);
 154
 155 #define nm_rbtree_postorder_for_each_entry_safe(pos, n,                 \
 156                                                 root, field)            \
 157         for (pos = nm_rb_first_postorder(root) ?                        \
 158                 rb_entry(nm_rb_first_postorder(root), typeof(*pos),     \
 159                 field) : NULL,                                          \
 160                 n = (pos && nm_rb_next_postorder(&pos->field)) ?        \
 161                 rb_entry(nm_rb_next_postorder(&pos->field),             \
 162                 typeof(*pos), field) : NULL;                            \
 163                 pos != NULL;                                            \
 164                 pos = n,                                                \
 165                 n = (pos && nm_rb_next_postorder(&pos->field)) ?        \
 166                 rb_entry(nm_rb_next_postorder(&pos->field),             \
 167                 typeof(*pos), field) : NULL)
 168
 169 int nodemap_idx_nodemap_add(const struct lu_nodemap *nodemap);
 170 int nodemap_idx_nodemap_update(const struct lu_nodemap *nodemap);
 171 int nodemap_idx_nodemap_del(const struct lu_nodemap *nodemap);
 172 int nodemap_idx_cluster_roles_add(const struct lu_nodemap *nodemap);
 173 int nodemap_idx_cluster_roles_update(const struct lu_nodemap *nodemap);
 174 int nodemap_idx_cluster_roles_del(const struct lu_nodemap *nodemap);
 175 int nodemap_idx_idmap_add(const struct lu_nodemap *nodemap,
 176                           enum nodemap_id_type id_type,
 177                           const __u32 map[2]);
 178 int nodemap_idx_idmap_del(const struct lu_nodemap *nodemap,
 179                           enum nodemap_id_type id_type,
 180                           const __u32 map[2]);
 181 int nodemap_idx_range_add(const struct lu_nid_range *range,
 182                           const lnet_nid_t nid[2]);
 183 int nodemap_idx_range_del(const struct lu_nid_range *range);
 184 int nodemap_idx_nodemap_activate(bool value);
 185 #endif  /* _NODEMAP_INTERNAL_H */