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403f4479bc
Replace old Id as needed (back-tcl). Leave updating of contribWare to contributors (for now).
144 lines
3.1 KiB
C
144 lines
3.1 KiB
C
/* porter.c - port functions of the bdb2 backend */
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/* $OpenLDAP$ */
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#include "portable.h"
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#include <stdio.h>
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#include <ac/errno.h>
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#include <ac/string.h>
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#include "slap.h"
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#include "back-bdb2.h"
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#define PORTER_OBJ "bdb2_backend"
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int
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bdb2i_enter_backend_rw( DB_LOCK *lock, int writer )
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{
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u_int32_t locker;
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db_lockmode_t lock_type;
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DBT lock_dbt;
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int ret = 0;
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switch ( slapMode & SLAP_MODE ) {
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case SLAP_SERVER_MODE:
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case SLAP_TOOL_MODE:
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if ( ( ret = lock_id( bdb2i_dbEnv.lk_info, &locker )) != 0 ) {
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Debug( LDAP_DEBUG_ANY,
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"bdb2i_enter_backend(): unable to get locker id -- %s\n",
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strerror( ret ), 0, 0 );
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return( ret );
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}
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lock_type = writer ? DB_LOCK_WRITE : DB_LOCK_READ;
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lock_dbt.data = PORTER_OBJ;
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lock_dbt.size = strlen( PORTER_OBJ );
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switch ( ( ret = lock_get( bdb2i_dbEnv.lk_info, locker, 0,
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&lock_dbt, lock_type, lock ))) {
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case 0:
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Debug( LDAP_DEBUG_TRACE,
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"bdb2i_enter_backend() -- %s lock granted\n",
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writer ? "write" : "read", 0, 0 );
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break;
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case DB_LOCK_NOTGRANTED:
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Debug( LDAP_DEBUG_ANY,
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"bdb2i_enter_backend() -- %s lock NOT granted\n",
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writer ? "write" : "read", 0, 0 );
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break;
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case DB_LOCK_DEADLOCK:
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Debug( LDAP_DEBUG_ANY,
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"bdb2i_enter_backend() -- %s lock returned DEADLOCK\n",
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writer ? "write" : "read", 0, 0 );
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break;
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default:
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ret = errno;
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Debug( LDAP_DEBUG_ANY,
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"bdb2i_enter_backend() -- %s lock returned ERROR: %s\n",
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writer ? "write" : "read", strerror( ret ), 0 );
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break;
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}
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break;
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}
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/* if we are a writer and we have the backend lock,
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start transaction control */
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if ( writer && ( ret == 0 )) {
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ret = bdb2i_start_transction( bdb2i_dbEnv.tx_info );
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}
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return( ret );
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}
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int
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bdb2i_leave_backend_rw( DB_LOCK lock, int writer )
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{
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/* since one or more error can occure,
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we must have several return codes that are or'ed at the end */
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int ret_transaction = 0;
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int ret_lock = 0;
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/* if we are a writer, finish the transaction */
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if ( writer ) {
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ret_transaction = bdb2i_finish_transaction();
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}
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/* check whether checkpointing is needed */
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ret_transaction |= bdb2i_set_txn_checkpoint( bdb2i_dbEnv.tx_info, 0 );
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/* now release the lock */
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switch ( slapMode & SLAP_MODE ) {
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case SLAP_SERVER_MODE:
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case SLAP_TOOL_MODE:
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switch( ( ret_lock = lock_put( bdb2i_dbEnv.lk_info, lock ))) {
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case 0:
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Debug( LDAP_DEBUG_TRACE,
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"bdb2i_leave_backend() -- %s lock released\n",
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writer ? "write" : "read", 0, 0 );
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break;
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case DB_LOCK_NOTHELD:
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Debug( LDAP_DEBUG_ANY,
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"bdb2i_leave_backend() -- %s lock NOT held\n",
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writer ? "write" : "read", 0, 0 );
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break;
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case DB_LOCK_DEADLOCK:
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Debug( LDAP_DEBUG_ANY,
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"bdb2i_leave_backend() -- %s lock returned DEADLOCK\n",
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writer ? "write" : "read", 0, 0 );
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break;
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default:
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ret_lock = errno;
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Debug( LDAP_DEBUG_ANY,
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"bdb2i_leave_backend() -- %s lock returned ERROR: %s\n",
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writer ? "write" : "read", strerror( ret_lock ), 0 );
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break;
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}
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break;
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}
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return( ret_transaction | ret_lock );
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}
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