/*
* Steps:
* 1. Deactivate the service
* 2. Free all memory used by the service and free the service itself
*
* Since this function may free all memory associated with the service as
* well as the memory pointed by sp, only the value of sp should be used
* after this call if the return value is 0 (i.e. no dereferencing of sp).
*
* Special services are never deactivated.
*/
int svc_release( struct service *sp )
{
char *sid = SVC_ID( sp ) ;
const char *func = "svc_release" ;
if ( SVC_REFCOUNT(sp) == 0 )
{
msg( LOG_ERR, func, "%s: svc_release with 0 count", sid ) ;
return( 0 ) ;
}
SVC_REFCOUNT(sp)-- ;
if ( SVC_REFCOUNT(sp) == 0 )
{
if ( debug.on )
msg( LOG_DEBUG, func, "ref count of service %s dropped to 0", sid ) ;
if ( ! SC_IS_SPECIAL( SVC_CONF( sp ) ) )
{
if ( SVC_LOG(sp) )
log_end( SC_LOG( SVC_CONF( sp ) ), SVC_LOG(sp) ) ;
svc_deactivate( sp ) ;
svc_free( sp ) ;
sp = NULL;
}
else /* this shouldn't happen */
msg( LOG_WARNING, func,
"ref count of special service %s dropped to 0", sid ) ;
return( 0 ) ;
}
else
return( SVC_REFCOUNT(sp) ) ;
}
/*
* Check for reference counting errors.
* Returns number of errors found.
* Always set the number of running and retry servers.
*/
static unsigned refcount_check( struct service *sp,
unsigned *running_servers,
unsigned *retry_servers )
{
char *sid = SVC_ID( sp ) ;
unsigned errors = 0 ;
int refs ;
int refcount = SVC_REFCOUNT( sp ) ;
const char *func = "refcount_check" ;
if ( refcount <= 0 )
{
msg( LOG_ERR, func, "%s service has bad refcount: %d",
sid, refcount ) ;
errors++ ;
}
/*
* The service table holds a reference to the service. The remaining
* references must be from servers and connections.
*/
refcount-- ;
refs = count_refs( sp, SERVERS( ps ), running_servers ) ;
if ( ! errors && refs > refcount )
{
msg( LOG_ERR, func,
"running servers: too many references for %s (%d with max=%d)",
sid, refs, refcount ) ;
errors++ ;
}
refs = count_refs( sp, RETRIES( ps ), retry_servers ) ;
if ( ! errors && refs > refcount )
{
msg( LOG_ERR, func,
"retry servers: too many references for %s (%d with max=%d)",
sid, refs, refcount ) ;
errors++ ;
}
if ( errors && debug.on )
msg( LOG_DEBUG, func, "%s: %d errors detected", sid, errors ) ;
return( errors ) ;
}
struct service *svc_make_special( struct service_config *scp )
{
struct service *sp ;
const char *func = "svc_make_special" ;
if ( ( sp = svc_new( scp ) ) == NULL )
{
out_of_memory( func ) ;
return( NULL ) ;
}
SVC_NOT_GENERIC(sp) = 1 ;
SVC_LOG(sp) = ps.rws.program_log ;
SVC_REFCOUNT(sp) = 1 ;
SVC_STATE(sp) = SVC_ACTIVE ;
return( sp ) ;
}