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Add idl_delete routines

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This commit is contained in:
Kurt Zeilenga 2000-09-20 23:29:41 +00:00
parent 6543336245
commit 4830b23b9d
1 changed files with 75 additions and 2 deletions
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77
servers/slapd/back-bdb/idl.c
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@ -49,12 +49,12 @@ static int idl_insert( ID *ids, ID id )
ids[0]++;
ids[ids[0]] = id;
} else if ( ids[0]+1 >= BDB_IDL_MAX ) {
} else if ( ++ids[0] >= BDB_IDL_MAX ) {
ids[0] = NOID;
} else {
/* insert id */
AC_MEMCPY( &ids[x+1], &ids[x], (1+ids[0]-x) * sizeof(ID) );
AC_MEMCPY( &ids[x+1], &ids[x], (ids[0]-x) * sizeof(ID) );
ids[0]++;
ids[x] = id;
}
@ -62,6 +62,24 @@ static int idl_insert( ID *ids, ID id )
return 0;
}
static int idl_delete( ID *ids, ID id )
{
int x = idl_search( ids, id );
if( x == 0 || ids[x] != id ) {
/* not found */
return -1;
} else if ( --ids[0] == 0 ) {
if( x != 1 ) return -1;
} else {
AC_MEMCPY( &ids[x], &ids[x+1], (1+ids[0]-x) * sizeof(ID) );
}
return 0;
}
int
bdb_idl_insert_key(
BackendDB *be,
@ -115,3 +133,58 @@ bdb_idl_insert_key(
return rc;
}
int
bdb_idl_delete_key(
BackendDB *be,
DB *db,
DB_TXN *tid,
DBT *key,
ID id )
{
int rc;
ID ids[BDB_IDL_SIZE];
DBT data;
assert( id != NOID );
data.data = ids;
data.ulen = sizeof( ids );
data.flags = DB_DBT_USERMEM;
/* fetch the key and grab a write lock */
rc = db->get( db, tid, key, &data, DB_RMW );
if ( rc != 0 ) {
return rc;
} else if ( data.size == 0 || data.size % sizeof( ID ) ) {
/* size not multiple of ID size */
return -1;
} else if ( BDB_IS_ALLIDS(ids) ) {
return 0;
} else if ( data.size != (1 + ids[0]) * sizeof( ID ) ) {
/* size mismatch */
return -1;
} else {
rc = idl_delete( ids, id );
if( rc != 0 ) return rc;
if( BDB_IS_ALLIDS(ids) ) {
/* delete the key */
rc = db->del( db, tid, key, 0 );
return rc;
}
data.size = (ids[0]+1) * sizeof( ID );
}
/* store the key */
rc = db->put( db, tid, key, &data, 0 );
return rc;
}