Attempt to open /dev/rtc if /dev/misc/rtc fails, so it works in the nondevfs case.

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
@@ -179,130 +179,131 @@ int main ( int argc, char **argv )
 		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;