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https://git.openldap.org/openldap/openldap.git
synced 2026-01-01 12:39:35 -05:00
d92b9d3c9e
BEWARE: the backend will be compiled.
the backend will NOT be invoked, yet.
the backend CANNOT be invoked, yet, because it is NOT yet
integrated into the new initialization/startup environment
of the slapd server.
127 lines
2.4 KiB
C
127 lines
2.4 KiB
C
/* porter.c - port functions of the bdb2 backend */
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#include "portable.h"
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#include <stdio.h>
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#include <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 bdb2i_with_dbenv = 0;
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static int
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bdb2i_enter_backend( DB_ENV *dbEnv, 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;
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if ( !bdb2i_with_dbenv ) return( 0 );
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if ( ( ret = lock_id( 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( dbEnv->lk_info, locker, 0, &lock_dbt,
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lock_type, lock ))) {
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case 0:
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Debug( LDAP_DEBUG_ANY, "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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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( errno ), 0 );
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ret = errno;
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break;
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}
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return( ret );
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}
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int
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bdb2i_enter_backend_r( DB_ENV *dbEnv, DB_LOCK *lock )
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{
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return( bdb2i_enter_backend( dbEnv, lock, 0 ));
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}
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int
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bdb2i_enter_backend_w( DB_ENV *dbEnv, DB_LOCK *lock )
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{
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return( bdb2i_enter_backend( dbEnv, lock, 1 ));
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}
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int
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bdb2i_leave_backend( DB_ENV *dbEnv, DB_LOCK lock )
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{
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int ret;
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if ( !bdb2i_with_dbenv ) return( 0 );
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switch( ( ret = lock_put( dbEnv->lk_info, lock ))) {
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case 0:
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Debug( LDAP_DEBUG_ANY, "bdb2i_leave_backend() -- lock released\n",
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0, 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() -- lock NOT held\n",
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0, 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() -- lock returned DEADLOCK\n",
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0, 0, 0 );
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break;
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default:
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Debug( LDAP_DEBUG_ANY,
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"bdb2i_leave_backend() -- lock returned ERROR: %s\n",
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strerror( errno ), 0, 0 );
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ret = errno;
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break;
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}
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return( ret );
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}
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