/* Initialise the resolver. Open a socket and bind it to the address
of the server. return -1 if something goes wrong, otherwise 0. If
we are being called a second time we have to be careful to allow
any ongoing lookups to finish before we close the socket and
connect to a different DNS server. The danger here is that we may
have to wait for upto 32 seconds if the DNS server is down.
*/
int
cyg_dns_res_init(struct in_addr *dns_server)
{
struct sockaddr_in server;
struct servent *sent;
static int init =0;
CYG_REPORT_FUNCNAMETYPE( "cyg_dns_res_init", "returning %d" );
CYG_REPORT_FUNCARG1( "dns_server=%08x", dns_server );
CYG_CHECK_DATA_PTR( dns_server, "dns_server is not a valid pointer!" );
if (init) {
cyg_drv_mutex_lock(&dns_mutex);
cyg_thread_free_data_index(ptdindex);
if (s >= 0) {
close(s);
}
} else {
init = 1;
cyg_drv_mutex_init(&dns_mutex);
cyg_drv_mutex_lock(&dns_mutex);
}
s = socket(PF_INET, SOCK_DGRAM, 0);
if (s < 0) {
cyg_drv_mutex_unlock(&dns_mutex);
CYG_REPORT_RETVAL( -1 );
return -1;
}
sent = getservbyname("domain", "udp");
if (sent == (struct servent *)0) {
s = -1;
cyg_drv_mutex_unlock(&dns_mutex);
CYG_REPORT_RETVAL( -1 );
return -1;
}
memcpy((char *)&server.sin_addr, (const void *)dns_server, sizeof(server.sin_addr));
server.sin_port = sent->s_port;
server.sin_family = AF_INET;
server.sin_len = sizeof(server);
if (connect(s, (struct sockaddr *)&server, sizeof(server)) < 0) {
s = -1;
cyg_drv_mutex_unlock(&dns_mutex);
CYG_REPORT_RETVAL( -1 );
return -1;
}
ptdindex = cyg_thread_new_data_index();
cyg_drv_mutex_unlock(&dns_mutex);
CYG_REPORT_RETVAL( 0 );
return 0;
}
externC void cyg_drv_interrupt_unmask_intunsafe( cyg_vector_t vector )
{
CYG_REPORT_FUNCTION();
CYG_REPORT_FUNCARG1("vector=%d", vector);
CYG_ASSERT( vector >= CYGNUM_HAL_ISR_MIN, "Invalid vector");
CYG_ASSERT( vector <= CYGNUM_HAL_ISR_MAX, "Invalid vector");
HAL_INTERRUPT_UNMASK( vector );
CYG_REPORT_RETURN();
}
externC void cyg_drv_interrupt_unmask( cyg_vector_t vector )
{
CYG_INTERRUPT_STATE old_ints;
CYG_REPORT_FUNCTION();
CYG_REPORT_FUNCARG1("vector=%d", vector);
CYG_ASSERT( vector >= CYGNUM_HAL_ISR_MIN, "Invalid vector");
CYG_ASSERT( vector <= CYGNUM_HAL_ISR_MAX, "Invalid vector");
HAL_DISABLE_INTERRUPTS(old_ints);
HAL_INTERRUPT_UNMASK( vector );
HAL_RESTORE_INTERRUPTS(old_ints);
CYG_REPORT_RETURN();
}
externC cyg_cpu_t cyg_drv_interrupt_get_cpu( cyg_vector_t vector )
{
cyg_cpu_t cpu = 0;
CYG_REPORT_FUNCTION();
CYG_REPORT_FUNCARG1("vector = %d", vector);
CYG_ASSERT( vector >= CYGNUM_HAL_ISR_MIN, "Invalid vector");
CYG_ASSERT( vector <= CYGNUM_HAL_ISR_MAX, "Invalid vector");
#ifdef CYGPKG_HAL_SMP_SUPPORT
HAL_INTERRUPT_GET_CPU( vector, cpu );
#endif
CYG_REPORT_RETURN();
return cpu;
}
