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-rw-r--r--core/opiealarm/opiealarm.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/core/opiealarm/opiealarm.c b/core/opiealarm/opiealarm.c
index 465e633..998cabd 100644
--- a/core/opiealarm/opiealarm.c
+++ b/core/opiealarm/opiealarm.c
@@ -1,101 +1,101 @@
/*
* opiealarm.c
*
* This program is for extracting the event time/date out
- * of /etc/resumeat and setting the RTC alarm to that time/date.
+ * of /var/run/resumeat and setting the RTC alarm to that time/date.
* It is designed to run via a script just before the iPAQ
* is suspended and right after the iPAQ resumes operation.
*
* written and copyrighted by Robert Griebl <sandman@handhelds.org>
*/
#include <stdio.h>
#include <linux/rtc.h>
#include <sys/ioctl.h>
#include <sys/time.h>
#include <sys/types.h>
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
#include <time.h>
#include <stdlib.h>
#include <syslog.h>
#include <signal.h>
#include <errno.h>
#include <string.h>
#define PIDFILE "/var/run/opiealarm.pid"
#define TIMEFILE "/var/run/resumeat"
#define APMFILE "/proc/apm"
int resume ( int resuspend );
int suspend ( int fix_rtc );
int main ( int argc, char **argv );
int fork_with_pidfile ( void );
int kill_with_pidfile ( void );
void remove_pidfile ( void );
void usage ( void );
void sig_handler_child ( int sig );
void sig_handler_parent ( int sig );
int onac ( void );
static int opiealarm_was_running;
static pid_t parent_pid = 0;
void sig_handler_child ( int sig )
{
// child got SIGUSR2 -> cleanup pidfile and exit
remove_pidfile ( );
exit ( 0 );
}
void sig_handler_parent ( int sig )
{
// parent got SIGUSR1 -> safe to exit now
parent_pid = 0;
exit ( 0 );
}
void usage ( void )
{
fprintf ( stderr, "Usage: opiealarm -s [-f] | -r [-a]\n\n" );
fprintf ( stderr, "\t-s\tSuspend mode: set RTC alarm\n" );
fprintf ( stderr, "\t-f \tFix RTC, if RTC and system have more than 5sec difference (suspend mode)\n" );
fprintf ( stderr, "\t-r\tResume mode: kill running opiealarm\n" );
fprintf ( stderr, "\t-a <x>\tResuspend in <x> seconds (resume mode)\n\n" );
exit ( 1 );
}
int fork_with_pidfile ( void )
{
FILE *fp;
pid_t pid;
pid = fork ( );
if ( pid > 0 ) {
// We can not just exit now, because the kernel could suspend
// the iPAQ just before the child process sets the RTC.
// Solution: just wait for SIGUSR1 - the child process will
// signal this when it thinks it is safe to exit.
signal ( SIGUSR1, sig_handler_parent );
while ( 1 )
sleep ( 1000 );
exit ( 0 );
}
else if ( pid < 0 ) {
perror ( "forking failed" );
return 0;
}
// child process needs to react to SIGUSR2. This is sent when
// a new opiealarm process is started.
signal ( SIGUSR2, sig_handler_child );