Use SIG_IGN rather than an empty handler to ignore SIG_TSTP.

1 files changed, 1 insertions, 7 deletions

diff --git a/libopie/odevice.cpp b/libopie/odevice.cpp
index 6572fb6..1da8862 100644
--- a/libopie/odevice.cpp
+++ b/libopie/odevice.cpp
@@ -6,275 +6,269 @@
     License as published by the Free Software Foundation; either
     version 2 of the License, or (at your option) any later version.
 
     This library 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
     Library General Public License for more details.
 
     You should have received a copy of the GNU Library General Public License
     along with this library; see the file COPYING.LIB.  If not, write to
     the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
     Boston, MA 02111-1307, USA.
 */
 
 #include <stdlib.h>
 #include <unistd.h>
 #include <fcntl.h>
 #include <sys/ioctl.h>
 #include <signal.h>
 #include <sys/time.h>
 #include <linux/soundcard.h>
 
 #include <qapplication.h>
 
 #include <qfile.h>
 #include <qtextstream.h>
 #include <qpe/sound.h>
 #include <qpe/resource.h>
 #include <qpe/config.h>
 
 
 
 #include "odevice.h"
 
 
 class ODeviceData {
 public:
 	QString m_vendorstr;
 	OVendor m_vendor;
 	
 	QString m_modelstr;
 	OModel m_model;
 
 	QString m_systemstr;
 	OSystem m_system;
 	
 	QString m_sysverstr;
 	
 	OLedState m_leds [4]; // just for convenience ...
 };
 
 class ODeviceIPAQ : public ODevice {
 protected: 
 	virtual void init ( );
 	
 public:
 	virtual void alarmSound ( );
 
 	virtual uint hasLeds ( ) const;
 	virtual OLedState led ( uint which ) const;
 	virtual bool setLed ( uint which, OLedState st );	
 };
 
 class ODeviceZaurus : public ODevice {
 protected:
 	virtual void init ( );
 
 public:	
 	virtual void alarmSound ( );
 	virtual void keySound ( );
 	virtual void touchSound ( );	
 
 	virtual uint hasLeds ( ) const;
 	virtual OLedState led ( uint which ) const;
 	virtual bool setLed ( uint which, OLedState st );	
 	
 protected:
 	virtual void buzzer ( int snd );
 };
 
 
 
 
 ODevice *ODevice::inst ( )
 {
 	static ODevice *dev = 0;
 	
 	if ( !dev ) {
 		if ( QFile::exists ( "/proc/hal/model" ))
 			dev = new ODeviceIPAQ ( );
 		else if ( QFile::exists ( "/dev/sharp_buz" ) || QFile::exists ( "/dev/sharp_led" ))
 			dev = new ODeviceZaurus ( );
 		else
 			dev = new ODevice ( );
 			
 		dev-> init ( );
 	}
 	return dev;
 }
 
 ODevice::ODevice ( )
 {
 	d = new ODeviceData;
 
 	d-> m_modelstr = "Unknown";
 	d-> m_model = OMODEL_Unknown;
 	d-> m_vendorstr = "Unkown";
 	d-> m_vendor = OVENDOR_Unknown;
 	d-> m_systemstr = "Unkown";
 	d-> m_system = OSYSTEM_Unknown;
 	d-> m_sysverstr = "0.0";
 }
 
 void ODevice::init ( )
 {
 }
 
 ODevice::~ODevice ( )
 {
 	delete d;
 }
 
 //#include <linux/apm_bios.h>
 
 //#define APM_IOC_SUSPEND        _IO('A',2)
 
 #define APM_IOC_SUSPEND          (( 0<<30 ) | ( 'A'<<8 ) | ( 2 ) | ( 0<<16 ))
 
-
-void ODevice::tstp_sighandler ( int )
-{
-}
-
-
 bool ODevice::suspend ( )
 {
 	if ( d-> m_model == OMODEL_Unknown ) // better don't suspend in qvfb / on unkown devices
 		return false;
 
 	int fd;
 	bool res = false;
 	
 	if ((( fd = ::open ( "/dev/apm_bios", O_RDWR )) >= 0 ) ||
 	    (( fd = ::open ( "/dev/misc/apm_bios",O_RDWR )) >= 0 )) {	
 		struct timeval tvs, tvn;
 
-		::signal ( SIGTSTP, tstp_sighandler );	// we don't want to be stopped
+		::signal ( SIGTSTP, SIG_IGN );	// we don't want to be stopped
 		::gettimeofday ( &tvs, 0 );
 	
 		res = ( ::ioctl ( fd, APM_IOC_SUSPEND ) == 0 ); // tell the kernel to "start" suspending
 		::close ( fd );
 
 		if ( res ) {	
 			::kill ( -::getpid ( ), SIGTSTP ); // stop everthing in out process group
 
 			do { // wait at most 1.5 sec: either suspend didn't work or the device resumed
 				::usleep ( 200 * 1000 );
 				::gettimeofday ( &tvn, 0 );				
 			} while ((( tvn. tv_sec - tvs. tv_sec ) * 1000 + ( tvn. tv_usec - tvs. tv_usec ) / 1000 ) < 1500 );
 			
 			::kill ( -::getpid ( ), SIGCONT ); // continue everything in our process group
 		}	
 		
 		::signal ( SIGTSTP, SIG_DFL );
 	}
 	
 	return res;
 }
 
 
 QString ODevice::vendorString ( )
 {
 	return d-> m_vendorstr;
 }
 
 OVendor ODevice::vendor ( )
 {
 	return d-> m_vendor;
 }
 
 QString ODevice::modelString ( )
 {
 	return d-> m_modelstr;
 }
 
 OModel ODevice::model ( )
 {
 	return d-> m_model;
 }
 
 QString ODevice::systemString ( )
 {
 	return d-> m_systemstr;
 }
 
 OSystem ODevice::system ( )
 {
 	return d-> m_system;
 }
 
 QString ODevice::systemVersionString ( )
 {
 	return d-> m_sysverstr;
 }
 
 void ODevice::alarmSound ( )
 {
 #ifndef QT_QWS_EBX
 #ifndef QT_NO_SOUND
 	static Sound snd ( "alarm" );
 
 	if ( snd. isFinished ( ))
 		snd. play ( );
 #endif
 #endif
 }
 
 void ODevice::keySound ( )
 {
 #ifndef QT_QWS_EBX
 #ifndef QT_NO_SOUND
 	static Sound snd ( "keysound" );
 
 	if ( snd. isFinished ( ))
 		snd. play ( );
 #endif
 #endif
 }
 
 void ODevice::touchSound ( )
 {
 
 #ifndef QT_QWS_EBX
 #ifndef QT_NO_SOUND
 	static Sound snd ( "touchsound" );
 //qDebug("touchSound");
 	if ( snd. isFinished ( )) {
 		snd. play ( );
 //		qDebug("sound should play");
 		}
 #endif
 #endif
 }
 
 uint ODevice::hasLeds ( ) const
 {
 	return 0;
 }
 
 OLedState ODevice::led ( uint /*which*/ ) const
 {
 	return OLED_Off;
 }
 
 bool ODevice::setLed ( uint /*which*/, OLedState /*st*/ )
 {
 	return false;
 }
 
 
 
 
 //#if defined( QT_QWS_IPAQ ) // IPAQ
 
 
 void ODeviceIPAQ::init ( )
 {
 	d-> m_vendorstr = "HP";
 	d-> m_vendor = OVENDOR_HP;
 
 	QFile f ( "/proc/hal/model" );
 
 	if ( f. open ( IO_ReadOnly )) {
 		QTextStream ts ( &f );