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

   1 /* delete.c - ldbm 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-ldbm.h"
  12 #include "proto-back-ldbm.h"
  13
  14 int
  15 ldbm_back_delete(
  16     Backend     *be,
  17     Connection  *conn,
  18     Operation   *op,
  19     char        *dn
  20 )
  21 {
  22         struct ldbminfo *li = (struct ldbminfo *) be->be_private;
  23         char            *matched;
  24         char            *pdn = NULL;
  25         Entry           *e, *p;
  26
  27         Debug(LDAP_DEBUG_ARGS, "==> ldbm_back_delete: %s\n", dn, 0, 0);
  28
  29         /* get entry with writer lock */
  30         if ( (e = dn2entry_w( be, dn, &matched )) == NULL ) {
  31                 Debug(LDAP_DEBUG_ARGS, "<=- ldbm_back_delete: no such object %s\n",
  32                         dn, 0, 0);
  33                 send_ldap_result( conn, op, LDAP_NO_SUCH_OBJECT, matched, "" );
  34                 if ( matched != NULL ) {
  35                         free( matched );
  36                 }
  37                 return( -1 );
  38         }
  39
  40         Debug (LDAP_DEBUG_TRACE,
  41                 "rdwr_Xchk: readers_reading: %d writer_writing: %d\n",
  42                 e->e_rdwr.readers_reading, e->e_rdwr.writer_writing, 0);
  43
  44         /* check for deleted */
  45
  46         if ( has_children( be, e ) ) {
  47                 Debug(LDAP_DEBUG_ARGS, "<=- ldbm_back_delete: non leaf %s\n",
  48                         dn, 0, 0);
  49                 send_ldap_result( conn, op, LDAP_NOT_ALLOWED_ON_NONLEAF, "",
  50                     "" );
  51                 goto error_return;
  52         }
  53
  54         if ( ! access_allowed( be, conn, op, e, "entry", NULL, op->o_dn,
  55             ACL_WRITE ) ) {
  56                 Debug(LDAP_DEBUG_ARGS,
  57                         "<=- ldbm_back_delete: insufficient access %s\n",
  58                         dn, 0, 0);
  59                 send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS, "", "" );
  60                 goto error_return;
  61         }
  62
  63         Debug (LDAP_DEBUG_TRACE,
  64                 "rdwr_Xchk: readers_reading: %d writer_writing: %d\n",
  65                 e->e_rdwr.readers_reading, e->e_rdwr.writer_writing, 0);
  66
  67         /* XXX delete from parent's id2children entry XXX */
  68         pdn = dn_parent( be, dn );
  69         p = dn2entry_r( be, pdn, &matched );
  70         if ( id2children_remove( be, p, e ) != 0 ) {
  71                 send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, "","" );
  72                 goto error_return;
  73         }
  74
  75         /* delete from dn2id mapping */
  76         if ( dn2id_delete( be, e->e_dn ) != 0 ) {
  77                 Debug(LDAP_DEBUG_ARGS,
  78                         "<=- ldbm_back_delete: operations error %s\n",
  79                         dn, 0, 0);
  80                 send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, "", "" );
  81                 goto error_return;
  82         }
  83
  84         /* delete from disk and cache */
  85         if ( id2entry_delete( be, e ) != 0 ) {
  86                 Debug(LDAP_DEBUG_ARGS,
  87                         "<=- ldbm_back_delete: operations error %s\n",
  88                         dn, 0, 0);
  89                 send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, "", "" );
  90                 goto error_return;
  91         }
  92
  93         /* free entry and writer lock */
  94         cache_return_entry_w( &li->li_cache, e );
  95         if ( p != NULL )
  96                 cache_return_entry_r( &li->li_cache, p );
  97
  98         if ( matched != NULL ) free(matched);
  99
 100         send_ldap_result( conn, op, LDAP_SUCCESS, "", "" );
 101
 102         return( 0 );
 103
 104 error_return:;
 105         /* free entry and writer lock */
 106         cache_return_entry_w( &li->li_cache, e );
 107
 108         if( p != NULL )
 109                 cache_return_entry_r( &li->li_cache, p );
 110
 111         if ( matched != NULL ) free(matched);
 112
 113         return( -1 );
 114 }