source3/winbindd/idmap_rw.c

   1 /*
   2  * Unix SMB/CIFS implementation.
   3  *
   4  * ID mapping: abstract r/w new-mapping mechanism
   5  *
   6  * Copyright (C) Michael Adam 2010
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 3 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20  */
  21
  22 #include "includes.h"
  23 #include "winbindd.h"
  24 #include "idmap.h"
  25 #include "idmap_rw.h"
  26
  27 #undef DBGC_CLASS
  28 #define DBGC_CLASS DBGC_IDMAP
  29
  30 NTSTATUS idmap_rw_new_mapping(struct idmap_domain *dom,
  31                               struct idmap_rw_ops *ops,
  32                               struct id_map *map)
  33 {
  34         NTSTATUS status;
  35
  36         if (map == NULL) {
  37                 return NT_STATUS_INVALID_PARAMETER;
  38         }
  39
  40         if ((map->xid.type != ID_TYPE_UID) && (map->xid.type != ID_TYPE_GID)) {
  41                 return NT_STATUS_INVALID_PARAMETER;
  42         }
  43
  44         if (map->sid == NULL) {
  45                 return NT_STATUS_INVALID_PARAMETER;
  46         }
  47
  48         status = ops->get_new_id(dom, &map->xid);
  49
  50         if (!NT_STATUS_IS_OK(status)) {
  51                 DEBUG(3, ("Could not allocate id: %s\n", nt_errstr(status)));
  52                 return status;
  53         }
  54
  55         DEBUG(10, ("Setting mapping: %s <-> %s %lu\n",
  56                    sid_string_dbg(map->sid),
  57                    (map->xid.type == ID_TYPE_UID) ? "UID" : "GID",
  58                    (unsigned long)map->xid.id));
  59
  60         map->status = ID_MAPPED;
  61         status = ops->set_mapping(dom, map);
  62
  63         if (NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_COLLISION)) {
  64                 struct id_map *ids[2];
  65                 DEBUG(5, ("Mapping for %s exists - retrying to map sid\n",
  66                           sid_string_dbg(map->sid)));
  67                 ids[0] = map;
  68                 ids[1] = NULL;
  69                 status = dom->methods->sids_to_unixids(dom, ids);
  70         }
  71
  72         if (!NT_STATUS_IS_OK(status)) {
  73                 DEBUG(3, ("Could not store the new mapping: %s\n",
  74                           nt_errstr(status)));
  75                 return status;
  76         }
  77
  78         return NT_STATUS_OK;
  79 }