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@ -30,6 +30,7 @@
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/ioctl.h>
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#include <sys/file.h>
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#include <fcntl.h>
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#include <termios.h>
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#include <unistd.h>
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@ -75,10 +76,10 @@
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Modem::Modem( KandyPrefs *kprefs, TQObject *parent, const char *name ) :
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TQObject(parent, name)
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TQObject(parent, name), fd(-1)
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{
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mOpen = false;
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prefs = kprefs;
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timer = new TQTimer( this, "modemtimer" );
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@ -185,28 +186,31 @@ bool Modem::open()
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{
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struct termios tty;
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close();
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if ( !lockDevice() )
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return false;
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if (fd == -1)
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{
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TQCString dev = TQFile::encodeName( (*prefs).serialDevice() );
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const char *fdev = dev.data();
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if ( ( fd = ::open( fdev, O_RDWR | O_NOCTTY | O_NONBLOCK ) ) == -1 ) {
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emit errorMessage( i18n( "Unable to open device '%1'. "
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"Please check that you have sufficient permissions." )
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.arg( fdev ) );
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return false;
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}
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}
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TQCString dev = TQFile::encodeName( (*prefs).serialDevice() );
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const char *fdev = dev.data();
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if ( ( fd = ::open( fdev, O_RDWR | O_NOCTTY | O_NONBLOCK ) ) == -1 ) {
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emit errorMessage( i18n( "Unable to open device '%1'. "
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"Please check that you have sufficient permissions." )
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.arg( fdev ) );
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if ( !lockDevice() )
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return false;
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}
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tcflush( fd, TCIOFLUSH );
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if ( tcgetattr( fd, &init_tty ) == -1 ) {
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int errnumber = errno;
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emit errorMessage( i18n( "Communication setup failed (tcgetattr code: %1)" )
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.arg(strerror(errnumber)) );
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unlockDevice();
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::close( fd );
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fd = 0;
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fd = -1;
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return false;
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}
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@ -221,8 +225,9 @@ bool Modem::open()
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if ( tcsetattr( fd, TCSANOW, &tty ) == -1 ) {
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emit errorMessage( i18n( "tcsetattr() failed." ) );
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unlockDevice();
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::close( fd );
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fd = 0;
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fd = -1;
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return false;
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}
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@ -244,127 +249,56 @@ void Modem::close()
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delete sn;
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sn = 0;
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unlockDevice();
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if ( fd ) {
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tcflush( fd, TCIOFLUSH );
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tcsetattr( fd, TCSANOW, &init_tty );
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::close( fd );
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fd = 0;
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fd = -1;
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}
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xreset();
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unlockDevice();
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mOpen = false;
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}
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void Modem::flush()
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{
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if ( fd ) {
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if ( fd != -1) {
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tcflush( fd, TCIOFLUSH );
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bufpos = 0;
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}
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}
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#ifdef HAVE_LOCKDEV
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#include <lockdev.h>
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#endif
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bool Modem::lockDevice()
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{
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if ( is_locked )
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if (is_locked)
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return true;
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#ifdef HAVE_LOCKDEV
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is_locked = !dev_lock( (*prefs).serialDevice().local8Bit() );
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if (!is_locked)
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emit errorMessage( i18n( "Unable to lock device '%1'." ).arg(
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(*prefs).serialDevice() ));
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return is_locked;
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#else
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ssize_t count;
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pid_t pid;
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int lfd;
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struct passwd *pw;
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TQStringList pathList;
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TQString fileName, content;
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pathList = TQStringList::split( "/", (*prefs).serialDevice() );
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fileName = (*prefs).lockDirectory() + "/LCK.." + pathList.last();
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if ( !access( TQFile::encodeName( fileName ).data(), F_OK ) ) {
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char buf[256];
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if ( ( lfd = ::open( TQFile::encodeName( fileName ), O_RDONLY ) ) < 0 ) {
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emit errorMessage( i18n( "Unable to open lock file '%1'.")
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.arg( fileName ) );
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return false;
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}
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count = read( lfd, buf, 79 );
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if ( count < 0 ) {
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emit errorMessage( i18n( "Unable to read lock file '%1'.")
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.arg( fileName ) );
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::close( lfd );
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return false;
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}
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buf[ count ] = 0;
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::close( lfd );
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count = sscanf( buf, "%d", &pid );
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if ( ( count != 1 ) || ( pid <= 0 ) ) {
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emit errorMessage( i18n( "Unable to get PID from file '%1'.")
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.arg( fileName ) );
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return false;
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}
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if ( !kill( (pid_t) pid, 0 ) ) {
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emit errorMessage( i18n( "Process with PID %1, which is locking the device, is still running.")
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.arg( pid ) );
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return false;
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}
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if ( errno != ESRCH ) {
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emit errorMessage( i18n( "Unable to emit signal to PID of existing lock file.") );
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return false;
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}
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}
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if ( ( lfd = creat( TQFile::encodeName( fileName ).data(), 0644 ) ) == -1 ) {
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emit errorMessage( i18n( "Unable to create lock file '%1'. "
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"Please check that you have sufficient permissions.")
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.arg( fileName ) );
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return false;
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if (flock(fd, LOCK_EX))
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{
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// Locking failed
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is_locked = false;
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emit errorMessage(i18n("Unable to lock device '%1'.").arg((*prefs).serialDevice()));
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}
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else
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{
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is_locked = true;
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}
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pid = (int) getpid();
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pw = getpwuid( getuid() );
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content.sprintf( "%08d %s %s", pid, "kandy", pw->pw_name );
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write( lfd, TQFile::encodeName( content ).data(), content.length() );
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::close( lfd );
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is_locked = true;
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return true;
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#endif
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return is_locked;
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}
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void Modem::unlockDevice()
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{
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#ifdef HAVE_LOCKDEV
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dev_unlock( (*prefs).serialDevice().local8Bit(), getpid() );
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#else
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if ( is_locked ) {
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TQStringList pathList = TQStringList::split( "/", (*prefs).serialDevice() );
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TQFile::remove( (*prefs).lockDirectory() + "/LCK.." + pathList.last() );
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is_locked = false;
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}
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#endif
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if (fd != -1 && is_locked)
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{
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flock(fd, LOCK_UN);
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is_locked = false;
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}
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}
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@ -373,7 +307,7 @@ bool Modem::dsrOn()
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int flags;
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if ( !fd ) {
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if ( fd == -1 ) {
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#ifdef MODEM_DEBUG
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fprintf( stderr, "Modem: dsrOn(): File not open.\n" );
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#endif
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@ -396,7 +330,7 @@ bool Modem::ctsOn()
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int flags;
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if ( !fd ) {
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if ( fd == -1 ) {
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#ifdef MODEM_DEBUG
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fprintf( stderr, "Modem: ctsOn(): File not open.\n" );
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#endif
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@ -640,7 +574,7 @@ void Modem::init()
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{
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is_locked = false;
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fd = 0;
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fd = -1;
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sn = 0;
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cspeed = B38400;
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@ -687,7 +621,7 @@ ushort Modem::calcCRC()
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int i, j;
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ushort c = 0;
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for ( i = 0; i < xsize; i++ ) {
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c ^= (ushort) buffer[ i ] << 8;
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for ( j = 0; j < 8; j++ )
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