git.sur5r.net Git - openldap/blob - servers/slapd/back-bdb2/delete.c

   1 /* delete.c - bdb2 backend delete routine */
   2
   3 #include "portable.h"
   4
   5 #include <stdio.h>
   6
   7 #include <ac/string.h>
   8 #include <ac/socket.h>
   9
  10 #include "slap.h"
  11 #include "back-bdb2.h"
  12 #include "proto-back-bdb2.h"
  13
  14 static int
  15 bdb2i_back_delete_internal(
  16     BackendDB   *be,
  17     Connection  *conn,
  18     Operation   *op,
  19     char        *dn
  20 )
  21 {
  22         struct ldbminfo *li = (struct ldbminfo *) be->be_private;
  23         char    *matched = NULL;
  24         char    *pdn = NULL;
  25         Entry   *e, *p = NULL;
  26         int rootlock = 0;
  27         int     rc = -1;
  28
  29         Debug(LDAP_DEBUG_ARGS, "==> bdb2i_back_delete: %s\n", dn, 0, 0);
  30
  31         /* get entry with writer lock */
  32         if ( (e = bdb2i_dn2entry_w( be, dn, &matched )) == NULL ) {
  33                 Debug(LDAP_DEBUG_ARGS, "<=- bdb2i_back_delete: no such object %s\n",
  34                         dn, 0, 0);
  35                 send_ldap_result( conn, op, LDAP_NO_SUCH_OBJECT, matched, "" );
  36                 if ( matched != NULL ) {
  37                         free( matched );
  38                 }
  39                 return( -1 );
  40         }
  41
  42         /* check for deleted */
  43
  44         if ( bdb2i_has_children( be, e ) ) {
  45                 Debug(LDAP_DEBUG_ARGS, "<=- bdb2i_back_delete: non leaf %s\n",
  46                         dn, 0, 0);
  47                 send_ldap_result( conn, op, LDAP_NOT_ALLOWED_ON_NONLEAF, "",
  48                     "" );
  49                 goto return_results;
  50         }
  51
  52 #ifdef SLAPD_CHILD_MODIFICATION_WITH_ENTRY_ACL
  53         if ( ! access_allowed( be, conn, op, e,
  54                 "entry", NULL, ACL_WRITE ) )
  55         {
  56                 Debug(LDAP_DEBUG_ARGS,
  57                         "<=- bdb2i_back_delete: insufficient access %s\n",
  58                         dn, 0, 0);
  59                 send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS, "", "" );
  60                 goto return_results;
  61         }
  62 #endif
  63
  64         /* delete from parent's id2children entry */
  65         if( (pdn = dn_parent( be, dn )) != NULL ) {
  66                 if( (p = bdb2i_dn2entry_w( be, pdn, &matched )) == NULL) {
  67                         Debug( LDAP_DEBUG_TRACE,
  68                                 "<=- bdb2i_back_delete: parent does not exist\n", 0, 0, 0);
  69                         send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR,
  70                                 "", "");
  71                         goto return_results;
  72                 }
  73
  74 #ifndef SLAPD_CHILD_MODIFICATION_WITH_ENTRY_ACL
  75                 /* check parent for "children" acl */
  76                 if ( ! access_allowed( be, conn, op, p,
  77                         "children", NULL, ACL_WRITE ) )
  78                 {
  79                         Debug( LDAP_DEBUG_TRACE,
  80                                 "<=- bdb2i_back_delete: no access to parent\n", 0, 0, 0 );
  81                         send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
  82                                 "", "" );
  83                         goto return_results;
  84                 }
  85 #endif
  86
  87         } else {
  88                 /* no parent, must be root to delete */
  89                 if( ! be_isroot( be, op->o_ndn ) ) {
  90                         Debug( LDAP_DEBUG_TRACE,
  91                                 "<=- bdb2i_back_delete: no parent & not root\n", 0, 0, 0);
  92                         send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
  93                                 "", "");
  94                         goto return_results;
  95                 }
  96
  97                 ldap_pvt_thread_mutex_lock(&li->li_root_mutex);
  98                 rootlock = 1;
  99         }
 100
 101         if ( bdb2i_id2children_remove( be, p, e ) != 0 ) {
 102                 Debug(LDAP_DEBUG_ARGS,
 103                         "<=- bdb2i_back_delete: operations error %s\n",
 104                         dn, 0, 0);
 105                 send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, "","" );
 106                 goto return_results;
 107         }
 108
 109         /* delete from dn2id mapping */
 110         if ( bdb2i_dn2id_delete( be, e->e_dn ) != 0 ) {
 111                 Debug(LDAP_DEBUG_ARGS,
 112                         "<=- bdb2i_back_delete: operations error %s\n",
 113                         dn, 0, 0);
 114                 send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, "", "" );
 115                 goto return_results;
 116         }
 117
 118         /* delete from disk and cache */
 119         if ( bdb2i_id2entry_delete( be, e ) != 0 ) {
 120                 Debug(LDAP_DEBUG_ARGS,
 121                         "<=- bdb2i_back_delete: operations error %s\n",
 122                         dn, 0, 0);
 123                 send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, "", "" );
 124                 goto return_results;
 125         }
 126
 127         send_ldap_result( conn, op, LDAP_SUCCESS, "", "" );
 128         rc = 0;
 129
 130 return_results:;
 131         if ( pdn != NULL ) free(pdn);
 132
 133         if( p != NULL ) {
 134                 /* free parent and writer lock */
 135                 bdb2i_cache_return_entry_w( &li->li_cache, p );
 136
 137         }
 138
 139         if ( rootlock ) {
 140                 /* release root lock */
 141                 ldap_pvt_thread_mutex_unlock(&li->li_root_mutex);
 142         }
 143
 144         /* free entry and writer lock */
 145         bdb2i_cache_return_entry_w( &li->li_cache, e );
 146
 147         if ( matched != NULL ) free(matched);
 148
 149         return rc;
 150 }
 151
 152
 153 int
 154 bdb2_back_delete(
 155     BackendDB   *be,
 156     Connection  *conn,
 157     Operation   *op,
 158     char        *dn
 159 )
 160 {
 161         DB_LOCK  lock;
 162         struct ldbminfo *li = (struct ldbminfo *) be->be_private;
 163
 164         struct timeval  time1, time2;
 165         char   *elapsed_time;
 166         int    ret;
 167
 168         gettimeofday( &time1, NULL );
 169
 170         if ( bdb2i_enter_backend_w( get_dbenv( be ), &lock ) != 0 ) {
 171
 172                 send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, "", "" );
 173                 return( -1 );
 174
 175         }
 176
 177         ret = bdb2i_back_delete_internal( be, conn, op, dn );
 178
 179         (void) bdb2i_leave_backend( get_dbenv( be ), lock );
 180
 181         if ( bdb2i_do_timing ) {
 182
 183                 gettimeofday( &time2, NULL);
 184                 elapsed_time = bdb2i_elapsed( time1, time2 );
 185                 Debug( LDAP_DEBUG_ANY, "conn=%d op=%d DEL elapsed=%s\n",
 186                                 conn->c_connid, op->o_opid, elapsed_time );
 187                 free( elapsed_time );
 188
 189         }
 190
 191         return( ret );
 192 }
 193
 194