1 files changed, 3 insertions, 2 deletions

diff --git a/core/opiealarm/opiealarm.c b/core/opiealarm/opiealarm.c
index 70e5415..bb2e684 100644
--- a/core/opiealarm/opiealarm.c
+++ b/core/opiealarm/opiealarm.c
@@ -147,194 +147,195 @@ void remove_pidfile ( void )
 int main ( int argc, char **argv ) 
 {
         int mode = 0;
         int ac_resusp = 0;
         int fix_rtc = 0;
         int opt;
 
         while (( opt = getopt ( argc, argv, "a:frs" )) != EOF ) {
                 switch ( opt ) {
                         case 's':
                                 mode = 's';
                                 break;
                         case 'r':
                                 mode = 'r';
                                 break;
                         case 'a':
                                 ac_resusp = atoi ( optarg );
                                 if ( ac_resusp < 30 ) {
                                         ac_resusp = 120;
                                         
                                         fprintf ( stderr, "Warning: resuspend timeout must be >= 30 sec. -- now set to 120 sec\n" );
                                 }
                                 break;
                         case 'f':
                                 fix_rtc = 1;
                                         break;                  
                         default:
                                 usage ( );
                 }
                 }
         
         if ( geteuid ( ) != 0 ) {
                 fprintf ( stderr, "You need root priviledges to run opiealarm." );
                 return 2;
         }
         
         if ( !mode )
                 usage ( );
 
 
         parent_pid = getpid ( );
 
         // kill running opiealarm
         opiealarm_was_running = kill_with_pidfile ( );
         remove_pidfile ( );
 
         switch ( mode ) {
                 case 'r': opt = resume ( ac_resusp );
                           break;
                 case 's':
                 default : opt = suspend ( fix_rtc );
                           break;
         }
         
         parent_pid = 0;
         return opt;
         }       
                 
 
 int suspend ( int fix_rtc )
 {
         FILE *fp;
         char buf [64];
         time_t alrt, syst, rtct;
         struct tm alr, sys, rtc;
         int fd;
         int rtc_sys_diff;
         
         
         if ( !fork_with_pidfile ( ))
                 return 3;
 
         // we are the child process from here on ...
 
         tzset ( );  // not sure if it is really needed -- it probably doesn't hurt ...
         
         do { // try/catch simulation
         
                 // read the wakeup time from /etc/resumeat
                 if (!( fp = fopen ( "/etc/resumeat", "r" ))) 
                         break; //  ( 1, "/etc/resumeat" );
         
                 if ( !fgets ( buf, sizeof( buf ) - 1, fp ))
                         break; //  ( 1, "/etc/resumeat" );
 
                 fclose ( fp );
         
                 alrt = atoi ( buf ); // get the alarm time
                 if ( alrt == 0 )
                                 break; //  ( 0, "/etc/resumeat contains an invalid time description" );
                         alrt -= 5;      // wake up 5 sec before the specified time
                 alr = *gmtime ( &alrt );
 
                 time ( &syst );// get the UNIX system time
                         sys = *localtime ( &syst );     
                 
-                if (( fd = open ( "/dev/misc/rtc", O_RDWR )) < 0 )  // open the RTC device
-                                break; //  ( 1, "/dev/misc/rtc" );
+                if (( fd = open ( "/dev/misc/rtc", O_RDWR )) < 0 )
+                        if (( fd = open ( "/dev/rtc", O_RDWR )) < 0 )
+                                        break; //  ( 1, "rtc" );
                 
                 memset ( &rtc, 0, sizeof ( struct tm ));    // get the RTC time
                 if ( ioctl ( fd, RTC_RD_TIME, &rtc ) < 0 )
                                 break; //  ( 1, "ioctl RTC_RD_TIME" );  
                 rtct = mktime ( &rtc );
 
                 rtc_sys_diff = ( syst - rtct ) - sys. tm_gmtoff;  // calculate the difference between system and hardware time
         
                 if ( fix_rtc && (( rtc_sys_diff < -3 ) || ( rtc_sys_diff > 3 ))) {
                                 struct tm set;  
                         set = *gmtime ( &syst );
                         
                         // if the difference between system and hardware time is more than 3 seconds,
                         // we have to set the RTC (hwclock --systohc), or alarms won't work reliably.
         
                     if ( ioctl ( fd, RTC_SET_TIME, &set ) < 0 )
                        break; //  ( 1, "ioctl RTC_SET_TIME" );
                 }
 
                 if ( ioctl ( fd, RTC_ALM_SET, &alr ) < 0 )  // set RTC alarm time
                                 break; //  ( 1, "ioctl RTC_ALM_SET" );  
                 if ( ioctl ( fd, RTC_AIE_ON, 0 ) < 0 )
                         break; //  ( 1, "ioctl RTC_AIE_ON" );   // enable RTC alarm irq
 
                 // tell the parent it is safe to exit now .. we have set the RTC alarm
                 kill ( parent_pid, SIGUSR1 );
                         
                 if ( read ( fd, buf, sizeof( unsigned long )) < 0 ) // wait for the RTC alarm irq
                         break; //  ( 1, "read rtc alarm" );
         
                 // iPAQ woke up via RTC irq -- otherwise we would have received a SIGUSR2
                 // from the "resume instance" of opiealarm.
         
                 if ( ioctl ( fd, RTC_AIE_OFF, 0 ) < 0 )     // disable RTC alarm irq
                         break; //  ( 1, "ioctl RTC_AIE_OFF" );
                 
                 close ( fd );
         
                 remove_pidfile ( ); // normal exit
                         return 0;
                 
         } while ( 0 );
         
         kill ( parent_pid, SIGUSR1 );  // parent is still running - it can exit now
 
                 while ( 1 )         // pretend that we are waiting on RTC, so opiealarm -r can kill us
                 sleep ( 1000 ); // if we don't do this, the "resuspend on AC" would be triggerd
         return 0;
 }
 
 
 int onac ( void )
 {
         FILE *fp;
         int on = 0;
 
         // check the apm proc interface for AC status
 
         if (( fp = fopen ( APMFILE, "r" ))) { 
                 int ac = 0;
         
                 if ( fscanf ( fp, "%*[^ ] %*d.%*d 0x%*x 0x%x 0x%*x 0x%*x %*d%% %*i %*c", &ac ) == 1 )
                         on = ( ac == 0x01 ) ? 1 : 0;
 
                 fclose ( fp );
         }
         return on;
 }
 
 int resume ( int resuspend )
 {
         FILE *fp;
 
         // re-suspend when on AC (optional) when woken up via RTC
 
         if ( !opiealarm_was_running ) { 
                 // if opiealarm -s didn't wake up via RTC, the old process gets killed
                 // by kill_by_pidfile(), which is recorded in opiealarm_was_running
         
                         if ( resuspend && onac ( )) {
                         time_t start, now;
                         char *argv [4];
                                                 
                         if ( !fork_with_pidfile ( ))
                                 return 4;
                                 
                         // we can't wait for the resuspend timeout in the parent process.
                         // so we fork and tell the parent it can exit immediatly
                                 
                         kill ( parent_pid, SIGUSR1 );
 
                         // sleep <resuspend> seconds - this method is much more precise than sleep() !
                         time ( &start );
                         do {
                                 sleep ( 1 );
                                 time ( &now );