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/*
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Unix SMB / Netbios implementation .
NBT netbios routines and daemon - version 2
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Copyright ( C ) Andrew Tridgell 1994 - 1998
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This program is free software ; you can redistribute it and / or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation ; either version 2 of the License , or
( at your option ) any later version .
This program is distributed in the hope that it will be useful ,
but WITHOUT ANY WARRANTY ; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE . See the
GNU General Public License for more details .
You should have received a copy of the GNU General Public License
along with this program ; if not , write to the Free Software
Foundation , Inc . , 675 Mass Ave , Cambridge , MA 0213 9 , USA .
Revision History :
14 jan 96 : lkcl @ pires . co . uk
added multiple workgroup domain master support
*/
# include "includes.h"
extern pstring debugf ;
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int ClientNMB = - 1 ;
int ClientDGRAM = - 1 ;
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int global_nmb_port = - 1 ;
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static pstring host_file ;
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extern pstring global_myname ;
extern fstring global_myworkgroup ;
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extern char * * my_netbios_names ;
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extern BOOL global_in_nmbd ;
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/* are we running as a daemon ? */
static BOOL is_daemon = False ;
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/* have we found LanMan clients yet? */
BOOL found_lm_clients = False ;
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/* what server type are we currently */
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time_t StartupTime = 0 ;
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extern struct in_addr ipzero ;
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/**************************************************************************** **
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catch a sigterm
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* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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static void sig_term ( int sig )
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{
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BlockSignals ( True , SIGTERM ) ;
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DEBUG ( 0 , ( " Got SIGTERM: going down... \n " ) ) ;
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/* Write out wins.dat file if samba is a WINS server */
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wins_write_database ( False ) ;
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/* Remove all SELF registered names. */
release_my_names ( ) ;
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/* Announce all server entries as 0 time-to-live, 0 type. */
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announce_my_servers_removed ( ) ;
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/* If there was an async dns child - kill it. */
kill_async_dns_child ( ) ;
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exit ( 0 ) ;
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} /* sig_term */
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/**************************************************************************** **
catch a sighup
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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static VOLATILE sig_atomic_t reload_after_sighup = False ;
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static void sig_hup ( int sig )
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{
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BlockSignals ( True , SIGHUP ) ;
DEBUG ( 0 , ( " Got SIGHUP dumping debug info. \n " ) ) ;
write_browse_list ( 0 , True ) ;
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dump_all_namelists ( ) ;
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reload_after_sighup = True ;
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BlockSignals ( False , SIGHUP ) ;
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} /* sig_hup */
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# if DUMP_CORE
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/**************************************************************************** **
prepare to dump a core file - carefully !
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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static BOOL dump_core ( void )
{
char * p ;
pstring dname ;
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pstrcpy ( dname , debugf ) ;
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if ( ( p = strrchr_m ( dname , ' / ' ) ) )
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* p = 0 ;
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pstrcat ( dname , " /corefiles " ) ;
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mkdir ( dname , 0700 ) ;
sys_chown ( dname , getuid ( ) , getgid ( ) ) ;
chmod ( dname , 0700 ) ;
if ( chdir ( dname ) )
return ( False ) ;
umask ( ~ ( 0700 ) ) ;
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# ifdef HAVE_GETRLIMIT
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# ifdef RLIMIT_CORE
{
struct rlimit rlp ;
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getrlimit ( RLIMIT_CORE , & rlp ) ;
rlp . rlim_cur = MAX ( 4 * 1024 * 1024 , rlp . rlim_cur ) ;
setrlimit ( RLIMIT_CORE , & rlp ) ;
getrlimit ( RLIMIT_CORE , & rlp ) ;
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DEBUG ( 3 , ( " Core limits now %d %d \n " , ( int ) rlp . rlim_cur , ( int ) rlp . rlim_max ) ) ;
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}
# endif
# endif
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DEBUG ( 0 , ( " Dumping core in %s \n " , dname ) ) ;
abort ( ) ;
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return ( True ) ;
} /* dump_core */
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# endif
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/**************************************************************************** **
possibly continue after a fault
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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static void fault_continue ( void )
{
# if DUMP_CORE
dump_core ( ) ;
# endif
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} /* fault_continue */
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/**************************************************************************** **
expire old names from the namelist and server list
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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static void expire_names_and_servers ( time_t t )
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{
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static time_t lastrun = 0 ;
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if ( ! lastrun )
lastrun = t ;
if ( t < ( lastrun + 5 ) )
return ;
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lastrun = t ;
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/*
* Expire any timed out names on all the broadcast
* subnets and those registered with the WINS server .
* ( nmbd_namelistdb . c )
*/
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expire_names ( t ) ;
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/*
* Go through all the broadcast subnets and for each
* workgroup known on that subnet remove any expired
* server names . If a workgroup has an empty serverlist
* and has itself timed out then remove the workgroup .
* ( nmbd_workgroupdb . c )
*/
expire_workgroups_and_servers ( t ) ;
} /* expire_names_and_servers */
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/************************************************************************** **
reload the list of network interfaces
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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static BOOL reload_interfaces ( time_t t )
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{
static time_t lastt ;
int n ;
struct subnet_record * subrec ;
extern BOOL rescan_listen_set ;
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extern struct in_addr loopback_ip ;
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if ( t & & ( ( t - lastt ) < NMBD_INTERFACES_RELOAD ) ) return False ;
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lastt = t ;
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if ( ! interfaces_changed ( ) ) return False ;
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/* the list of probed interfaces has changed, we may need to add/remove
some subnets */
load_interfaces ( ) ;
/* find any interfaces that need adding */
for ( n = iface_count ( ) - 1 ; n > = 0 ; n - - ) {
struct interface * iface = get_interface ( n ) ;
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/*
* We don ' t want to add a loopback interface , in case
* someone has added 127.0 .0 .1 for smbd , nmbd needs to
* ignore it here . JRA .
*/
if ( ip_equal ( iface - > ip , loopback_ip ) ) {
DEBUG ( 2 , ( " reload_interfaces: Ignoring loopback interface %s \n " , inet_ntoa ( iface - > ip ) ) ) ;
continue ;
}
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for ( subrec = subnetlist ; subrec ; subrec = subrec - > next ) {
if ( ip_equal ( iface - > ip , subrec - > myip ) & &
ip_equal ( iface - > nmask , subrec - > mask_ip ) ) break ;
}
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if ( ! subrec ) {
/* it wasn't found! add it */
DEBUG ( 2 , ( " Found new interface %s \n " ,
inet_ntoa ( iface - > ip ) ) ) ;
subrec = make_normal_subnet ( iface ) ;
if ( subrec ) register_my_workgroup_one_subnet ( subrec ) ;
}
}
/* find any interfaces that need deleting */
for ( subrec = subnetlist ; subrec ; subrec = subrec - > next ) {
for ( n = iface_count ( ) - 1 ; n > = 0 ; n - - ) {
struct interface * iface = get_interface ( n ) ;
if ( ip_equal ( iface - > ip , subrec - > myip ) & &
ip_equal ( iface - > nmask , subrec - > mask_ip ) ) break ;
}
if ( n = = - 1 ) {
/* oops, an interface has disapeared. This is
tricky , we don ' t dare actually free the
interface as it could be being used , so
instead we just wear the memory leak and
remove it from the list of interfaces without
freeing it */
DEBUG ( 2 , ( " Deleting dead interface %s \n " ,
inet_ntoa ( subrec - > myip ) ) ) ;
close_subnet ( subrec ) ;
}
}
rescan_listen_set = True ;
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/* We need to shutdown if there are no subnets... */
if ( FIRST_SUBNET = = NULL ) {
DEBUG ( 0 , ( " reload_interfaces: No subnets to listen to. Shutting down... \n " ) ) ;
return True ;
}
return False ;
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}
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/**************************************************************************** **
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reload the services file
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* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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static BOOL reload_nmbd_services ( BOOL test )
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{
BOOL ret ;
extern fstring remote_machine ;
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fstrcpy ( remote_machine , " nmbd " ) ;
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if ( lp_loaded ( ) )
{
pstring fname ;
pstrcpy ( fname , lp_configfile ( ) ) ;
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if ( file_exist ( fname , NULL ) & & ! strcsequal ( fname , dyn_CONFIGFILE ) )
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{
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pstrcpy ( dyn_CONFIGFILE , fname ) ;
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test = False ;
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}
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}
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if ( test & & ! lp_file_list_changed ( ) )
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return ( True ) ;
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ret = lp_load ( dyn_CONFIGFILE , True , False , False ) ;
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/* perhaps the config filename is now set */
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if ( ! test )
{
DEBUG ( 3 , ( " services not loaded \n " ) ) ;
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reload_nmbd_services ( True ) ;
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}
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/* Do a sanity check for a misconfigured nmbd */
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if ( lp_wins_support ( ) & & wins_srv_count ( ) )
{
if ( DEBUGLVL ( 0 ) )
{
dbgtext ( " ERROR: 'wins support = true' and 'wins server = <server>' \n " ) ;
dbgtext ( " are conflicting settings. nmbd aborting. \n " ) ;
}
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exit ( 10 ) ;
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}
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return ( ret ) ;
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} /* reload_nmbd_services */
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/**************************************************************************** **
The main select loop .
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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static void process ( void )
{
BOOL run_election ;
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while ( True )
{
time_t t = time ( NULL ) ;
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/* check for internal messages */
message_dispatch ( ) ;
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/*
* Check all broadcast subnets to see if
* we need to run an election on any of them .
* ( nmbd_elections . c )
*/
run_election = check_elections ( ) ;
/*
* Read incoming UDP packets .
* ( nmbd_packets . c )
*/
if ( listen_for_packets ( run_election ) )
return ;
/*
* Process all incoming packets
* read above . This calls the success and
* failure functions registered when response
* packets arrrive , and also deals with request
* packets from other sources .
* ( nmbd_packets . c )
*/
run_packet_queue ( ) ;
/*
* Run any elections - initiate becoming
* a local master browser if we have won .
* ( nmbd_elections . c )
*/
run_elections ( t ) ;
/*
* Send out any broadcast announcements
* of our server names . This also announces
* the workgroup name if we are a local
* master browser .
* ( nmbd_sendannounce . c )
*/
announce_my_server_names ( t ) ;
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/*
* Send out any LanMan broadcast announcements
* of our server names .
* ( nmbd_sendannounce . c )
*/
announce_my_lm_server_names ( t ) ;
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/*
* If we are a local master browser , periodically
* announce ourselves to the domain master browser .
* This also deals with syncronising the domain master
* browser server lists with ourselves as a local
* master browser .
* ( nmbd_sendannounce . c )
*/
announce_myself_to_domain_master_browser ( t ) ;
/*
* Fullfill any remote announce requests .
* ( nmbd_sendannounce . c )
*/
announce_remote ( t ) ;
/*
* Fullfill any remote browse sync announce requests .
* ( nmbd_sendannounce . c )
*/
browse_sync_remote ( t ) ;
/*
* Scan the broadcast subnets , and WINS client
* namelists and refresh any that need refreshing .
* ( nmbd_mynames . c )
*/
refresh_my_names ( t ) ;
/*
* Scan the subnet namelists and server lists and
* expire thos that have timed out .
* ( nmbd . c )
*/
expire_names_and_servers ( t ) ;
/*
* Write out a snapshot of our current browse list into
* the browse . dat file . This is used by smbd to service
* incoming NetServerEnum calls - used to synchronise
* browse lists over subnets .
* ( nmbd_serverlistdb . c )
*/
write_browse_list ( t , False ) ;
/*
* If we are a domain master browser , we have a list of
* local master browsers we should synchronise browse
* lists with ( these are added by an incoming local
* master browser announcement packet ) . Expire any of
* these that are no longer current , and pull the server
* lists from each of these known local master browsers .
* ( nmbd_browsesync . c )
*/
dmb_expire_and_sync_browser_lists ( t ) ;
/*
* Check that there is a local master browser for our
* workgroup for all our broadcast subnets . If one
* is not found , start an election ( which we ourselves
* may or may not participate in , depending on the
* setting of the ' local master ' parameter .
* ( nmbd_elections . c )
*/
check_master_browser_exists ( t ) ;
/*
* If we are configured as a logon server , attempt to
* register the special NetBIOS names to become such
* ( WORKGROUP < 1 c > name ) on all broadcast subnets and
* with the WINS server ( if used ) . If we are configured
* to become a domain master browser , attempt to register
* the special NetBIOS name ( WORKGROUP < 1 b > name ) to
* become such .
* ( nmbd_become_dmb . c )
*/
add_domain_names ( t ) ;
/*
* If we are a WINS server , do any timer dependent
* processing required .
* ( nmbd_winsserver . c )
*/
initiate_wins_processing ( t ) ;
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/*
* If we are a domain master browser , attempt to contact the
* WINS server to get a list of all known WORKGROUPS / DOMAINS .
* This will only work to a Samba WINS server .
* ( nmbd_browsesync . c )
*/
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if ( lp_enhanced_browsing ( ) ) {
collect_all_workgroup_names_from_wins_server ( t ) ;
}
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/*
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* Go through the response record queue and time out or re - transmit
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* and expired entries .
* ( nmbd_packets . c )
*/
retransmit_or_expire_response_records ( t ) ;
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/*
* check to see if any remote browse sync child processes have completed
*/
sync_check_completion ( ) ;
/*
* regularly sync with any other DMBs we know about
*/
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if ( lp_enhanced_browsing ( ) ) {
sync_all_dmbs ( t ) ;
}
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/*
* clear the unexpected packet queue
*/
clear_unexpected ( t ) ;
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/*
* Reload the services file if we got a sighup .
*/
if ( reload_after_sighup ) {
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reload_nmbd_services ( True ) ;
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reopen_logs ( ) ;
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if ( reload_interfaces ( 0 ) )
return ;
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reload_after_sighup = False ;
}
/* check for new network interfaces */
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if ( reload_interfaces ( t ) )
return ;
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/* free up temp memory */
lp_talloc_free ( ) ;
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}
} /* process */
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/**************************************************************************** **
open the socket communication
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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static BOOL open_sockets ( BOOL isdaemon , int port )
{
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/* The sockets opened here will be used to receive broadcast
packets * only * . Interface specific sockets are opened in
make_subnet ( ) in namedbsubnet . c . Thus we bind to the
address " 0.0.0.0 " . The parameter ' socket address ' is
now deprecated .
*/
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if ( isdaemon )
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ClientNMB = open_socket_in ( SOCK_DGRAM , port , 0 , 0 , True ) ;
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else
ClientNMB = 0 ;
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ClientDGRAM = open_socket_in ( SOCK_DGRAM , DGRAM_PORT , 3 , 0 , True ) ;
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if ( ClientNMB = = - 1 )
return ( False ) ;
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/* we are never interested in SIGPIPE */
BlockSignals ( True , SIGPIPE ) ;
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set_socket_options ( ClientNMB , " SO_BROADCAST " ) ;
set_socket_options ( ClientDGRAM , " SO_BROADCAST " ) ;
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DEBUG ( 3 , ( " open_sockets: Broadcast sockets opened. \n " ) ) ;
return ( True ) ;
} /* open_sockets */
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/**************************************************************************** **
initialise connect , service and file structs
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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static BOOL init_structs ( void )
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{
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extern fstring local_machine ;
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char * p , * * ptr ;
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int namecount ;
int n ;
int nodup ;
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char * nbname ;
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if ( ! * global_myname )
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{
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fstrcpy ( global_myname , myhostname ( ) ) ;
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p = strchr_m ( global_myname , ' . ' ) ;
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if ( p )
* p = 0 ;
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}
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strupper ( global_myname ) ;
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/* Add any NETBIOS name aliases. Ensure that the first entry
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is equal to global_myname .
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*/
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/* Work out the max number of netbios aliases that we have */
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ptr = lp_netbios_aliases ( ) ;
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namecount = 0 ;
if ( ptr )
for ( ; * ptr ; namecount + + , ptr + + )
;
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if ( * global_myname )
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namecount + + ;
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/* Allocate space for the netbios aliases */
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my_netbios_names = ( char * * ) malloc ( sizeof ( char * ) * ( namecount + 1 ) ) ;
if ( NULL = = my_netbios_names )
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{
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DEBUG ( 0 , ( " init_structs: malloc fail. \n " ) ) ;
return ( False ) ;
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}
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/* Use the global_myname string first */
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namecount = 0 ;
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if ( * global_myname )
my_netbios_names [ namecount + + ] = global_myname ;
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ptr = lp_netbios_aliases ( ) ;
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if ( ptr )
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{
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while ( * ptr )
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{
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nbname = strdup ( * ptr ) ;
if ( nbname = = NULL )
{
DEBUG ( 0 , ( " init_structs: malloc fail when allocating names. \n " ) ) ;
return False ;
}
strupper ( nbname ) ;
/* Look for duplicates */
nodup = 1 ;
for ( n = 0 ; n < namecount ; n + + )
{
if ( 0 = = strcmp ( nbname , my_netbios_names [ n ] ) )
nodup = 0 ;
}
if ( nodup )
my_netbios_names [ namecount + + ] = nbname ;
else
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SAFE_FREE ( nbname ) ;
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ptr + + ;
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}
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}
/* Terminate name list */
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my_netbios_names [ namecount + + ] = NULL ;
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fstrcpy ( local_machine , global_myname ) ;
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trim_string ( local_machine , " " , " " ) ;
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p = strchr_m ( local_machine , ' ' ) ;
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if ( p )
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* p = 0 ;
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strlower ( local_machine ) ;
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DEBUG ( 5 , ( " Netbios name list:- \n " ) ) ;
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for ( n = 0 ; my_netbios_names [ n ] ; n + + )
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DEBUGADD ( 5 , ( " my_netbios_names[%d]= \" %s \" \n " , n , my_netbios_names [ n ] ) ) ;
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return ( True ) ;
} /* init_structs */
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/**************************************************************************** **
usage on the program
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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static void usage ( char * pname )
{
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printf ( " Usage: %s [-DaohV] [-H lmhosts file] [-d debuglevel] [-l log basename] \n " , pname ) ;
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printf ( " [-n name] [-p port] [-s configuration file] \n " ) ;
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printf ( " \t -D Become a daemon \n " ) ;
printf ( " \t -a Append to log file (default) \n " ) ;
printf ( " \t -o Overwrite log file, don't append \n " ) ;
printf ( " \t -h Print usage \n " ) ;
printf ( " \t -V Print version \n " ) ;
printf ( " \t -H hosts file Load a netbios hosts file \n " ) ;
printf ( " \t -d debuglevel Set the debuglevel \n " ) ;
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printf ( " \t -l log basename. Basename for log/debug files \n " ) ;
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printf ( " \t -n netbiosname. Primary netbios name \n " ) ;
printf ( " \t -p port Listen on the specified port \n " ) ;
printf ( " \t -s configuration file Configuration file name \n " ) ;
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printf ( " \n " ) ;
} /* usage */
/**************************************************************************** **
main program
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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int main ( int argc , char * argv [ ] )
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{
int opt ;
extern char * optarg ;
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extern BOOL append_log ;
append_log = True ; /* Default, override with '-o' option. */
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global_nmb_port = NMB_PORT ;
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* host_file = 0 ;
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global_in_nmbd = True ;
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StartupTime = time ( NULL ) ;
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sys_srandom ( time ( NULL ) ^ sys_getpid ( ) ) ;
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TimeInit ( ) ;
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slprintf ( debugf , sizeof ( debugf ) - 1 , " %s/log.nmbd " , dyn_LOGFILEBASE ) ;
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setup_logging ( argv [ 0 ] , False ) ;
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# ifdef LMHOSTSFILE
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pstrcpy ( host_file , LMHOSTSFILE ) ;
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# endif
/* this is for people who can't start the program correctly */
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while ( argc > 1 & & ( * argv [ 1 ] ! = ' - ' ) )
{
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argv + + ;
argc - - ;
}
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fault_setup ( ( void ( * ) ( void * ) ) fault_continue ) ;
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/* POSIX demands that signals are inherited. If the invoking process has
* these signals masked , we will have problems , as we won ' t recieve them . */
BlockSignals ( False , SIGHUP ) ;
BlockSignals ( False , SIGUSR1 ) ;
BlockSignals ( False , SIGTERM ) ;
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CatchSignal ( SIGHUP , SIGNAL_CAST sig_hup ) ;
CatchSignal ( SIGTERM , SIGNAL_CAST sig_term ) ;
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# if defined(SIGFPE)
/* we are never interested in SIGFPE */
BlockSignals ( True , SIGFPE ) ;
# endif
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/* We no longer use USR2... */
# if defined(SIGUSR2)
BlockSignals ( True , SIGUSR2 ) ;
# endif
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while ( EOF ! =
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( opt = getopt ( argc , argv , " Vaos:T:I:C:bAB:N:Rn:l:d:Dp:hSH:G:f: " ) ) )
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{
switch ( opt )
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{
case ' s ' :
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pstrcpy ( dyn_CONFIGFILE , optarg ) ;
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break ;
case ' N ' :
case ' B ' :
case ' I ' :
case ' C ' :
case ' G ' :
DEBUG ( 0 , ( " Obsolete option '%c' used \n " , opt ) ) ;
break ;
case ' H ' :
pstrcpy ( host_file , optarg ) ;
break ;
case ' n ' :
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pstrcpy ( global_myname , optarg ) ;
strupper ( global_myname ) ;
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break ;
case ' l ' :
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slprintf ( debugf , sizeof ( debugf ) - 1 , " %s/log.nmbd " , optarg ) ;
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break ;
case ' a ' :
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append_log = True ;
break ;
case ' o ' :
append_log = False ;
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break ;
case ' D ' :
is_daemon = True ;
break ;
case ' d ' :
DEBUGLEVEL = atoi ( optarg ) ;
break ;
case ' p ' :
global_nmb_port = atoi ( optarg ) ;
break ;
case ' h ' :
usage ( argv [ 0 ] ) ;
exit ( 0 ) ;
break ;
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case ' V ' :
printf ( " Version %s \n " , VERSION ) ;
exit ( 0 ) ;
break ;
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default :
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if ( ! is_a_socket ( 0 ) )
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{
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DEBUG ( 0 , ( " Incorrect program usage - is the command line correct? \n " ) ) ;
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usage ( argv [ 0 ] ) ;
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exit ( 0 ) ;
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}
break ;
}
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}
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reopen_logs ( ) ;
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DEBUG ( 1 , ( " Netbios nameserver version %s started. \n " , VERSION ) ) ;
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DEBUGADD ( 1 , ( " Copyright Andrew Tridgell 1994-1998 \n " ) ) ;
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if ( ! reload_nmbd_services ( False ) )
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return ( - 1 ) ;
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if ( ! init_structs ( ) )
return - 1 ;
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reload_nmbd_services ( True ) ;
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fstrcpy ( global_myworkgroup , lp_workgroup ( ) ) ;
if ( strequal ( global_myworkgroup , " * " ) )
{
DEBUG ( 0 , ( " ERROR: a workgroup name of * is no longer supported \n " ) ) ;
exit ( 1 ) ;
}
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set_samba_nb_type ( ) ;
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if ( ! is_daemon & & ! is_a_socket ( 0 ) )
{
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DEBUG ( 0 , ( " standard input is not a socket, assuming -D option \n " ) ) ;
is_daemon = True ;
}
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if ( is_daemon )
{
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DEBUG ( 2 , ( " Becoming a daemon. \n " ) ) ;
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become_daemon ( ) ;
}
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# ifndef SYNC_DNS
/* Setup the async dns. We do it here so it doesn't have all the other
stuff initialised and thus chewing memory and sockets */
if ( lp_we_are_a_wins_server ( ) ) {
start_async_dns ( ) ;
}
# endif
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if ( ! directory_exist ( lp_lockdir ( ) , NULL ) ) {
mkdir ( lp_lockdir ( ) , 0755 ) ;
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}
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pidfile_create ( " nmbd " ) ;
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message_init ( ) ;
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message_register ( MSG_FORCE_ELECTION , nmbd_message_election ) ;
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DEBUG ( 3 , ( " Opening sockets %d \n " , global_nmb_port ) ) ;
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if ( ! open_sockets ( is_daemon , global_nmb_port ) )
return 1 ;
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/* Determine all the IP addresses we have. */
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load_interfaces ( ) ;
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/* Create an nmbd subnet record for each of the above. */
if ( False = = create_subnets ( ) )
{
DEBUG ( 0 , ( " ERROR: Failed when creating subnet lists. Exiting. \n " ) ) ;
exit ( 1 ) ;
}
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/* Load in any static local names. */
if ( * host_file )
{
load_lmhosts_file ( host_file ) ;
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DEBUG ( 3 , ( " Loaded hosts file \n " ) ) ;
}
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/* If we are acting as a WINS server, initialise data structures. */
if ( ! initialise_wins ( ) )
{
DEBUG ( 0 , ( " nmbd: Failed when initialising WINS server. \n " ) ) ;
exit ( 1 ) ;
}
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/*
* Register nmbd primary workgroup and nmbd names on all
* the broadcast subnets , and on the WINS server ( if specified ) .
* Also initiate the startup of our primary workgroup ( start
* elections if we are setup as being able to be a local
* master browser .
*/
if ( False = = register_my_workgroup_and_names ( ) )
{
DEBUG ( 0 , ( " ERROR: Failed when creating my my workgroup. Exiting. \n " ) ) ;
exit ( 1 ) ;
}
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/* We can only take signals in the select. */
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BlockSignals ( True , SIGTERM ) ;
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process ( ) ;
if ( dbf )
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x_fclose ( dbf ) ;
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return ( 0 ) ;
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} /* main */