| -rw-r--r-- | core/opiealarm/opiealarm.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/core/opiealarm/opiealarm.c b/core/opiealarm/opiealarm.c index a4d46ed..71367b3 100644 --- a/core/opiealarm/opiealarm.c +++ b/core/opiealarm/opiealarm.c @@ -39,312 +39,322 @@ void remove_pidfile ( void ); void usage ( void ); void sig_handler ( int sig ); void error_msg_and_die ( int perr, const char *msg ); int onac ( void ); static int opiealarm_was_running; void log_msg ( const char *msg ) { if ( log ) { fprintf ( log, msg ); fflush ( log ); } } void error_msg_and_die ( int perr, const char *msg ) { if ( perr ) log_msg ( strerror ( errno )); log_msg ( msg ); while ( 1 ) // pretend we are waiting on RTC, so opiealarm -r can kill us sleep ( 1 ); } void sig_handler ( int sig ) { log_msg ( "GOT SIGNAL -> EXITING\n" ); fclose ( log ); remove_pidfile ( ); 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 ) exit ( 0 ); else if ( pid < 0 ) { perror ( "forking failed" ); return 0; } signal ( SIGTERM, sig_handler ); signal ( SIGINT, sig_handler ); // save pid if (( fp = fopen ( PIDFILE, "w" ))) { fprintf ( fp, "%d", getpid ( )); fclose ( fp ); // detach close ( 0 ); close ( 1 ); close ( 2 ); setpgid ( 0, 0 ); return 1; } else { perror ( PIDFILE ); return 0; } } int kill_with_pidfile ( void ) { FILE *fp; pid_t pid; if (( fp = fopen ( PIDFILE, "r" ))) { if ( fscanf ( fp, "%d", &pid ) == 1 ) return ( kill ( pid, SIGTERM ) == 0 ) ? 1 : 0; fclose ( fp ); } return 0; } void remove_pidfile ( void ) { unlink ( PIDFILE ); signal ( SIGTERM, SIG_DFL ); signal ( SIGINT, SIG_DFL ); } 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 ( ); // kill running opiealarm opiealarm_was_running = kill_with_pidfile ( ); remove_pidfile ( ); switch ( mode ) { case 'r': return resume ( ac_resusp ); case 's': default : return suspend ( fix_rtc ); } return 0; } 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; log = fopen ( "/tmp/opiealarm.log", "w" ); log_msg ( "STARTING\n" ); if (!( fp = fopen ( "/etc/resumeat", "r" ))) error_msg_and_die ( 1, "/etc/resumeat" ); if ( !fgets ( buf, sizeof( buf ) - 1, fp )) error_msg_and_die ( 1, "/etc/resumeat" ); fclose ( fp ); alrt = atoi ( buf ); if ( alrt == 0 ) error_msg_and_die ( 0, "/etc/resumeat contains an invalid time description" ); /* subtract 5 sec from event time... */ alrt -= 5; if ( log ) fprintf ( log, "Setting RTC alarm to %d\n", alrt ); + + tzset ( ); alr = *gmtime ( &alrt ); // get system time time ( &syst ); sys = *localtime ( &syst ); // Write alarm time to RTC if (( fd = open ( "/dev/misc/rtc", O_RDWR )) < 0 ) error_msg_and_die ( 1, "/dev/misc/rtc" ); // get RTC time + memset ( &rtc, 0, sizeof ( struct tm )); if ( ioctl ( fd, RTC_ALM_SET, &rtc ) < 0 ) error_msg_and_die ( 1, "ioctl RTC_RD_TIME" ); rtct = mktime ( &rtc ); + fprintf ( log, "System time: %02d.%02d.%04d %02d:%02d:%02d DST: %d (TZ: %s, offset: %d)\n", sys. tm_mday, sys. tm_mon + 1, sys. tm_year + 1900, sys. tm_hour, sys. tm_min, sys. tm_sec, sys. tm_isdst, sys. tm_zone, sys. tm_gmtoff ); + fprintf ( log, "RTC time: %02d.%02d.%04d %02d:%02d:%02d DST: %d (TZ: %s, offset: %d)\n", rtc. tm_mday, rtc. tm_mon + 1, rtc. tm_year + 1900, rtc. tm_hour, rtc. tm_min, rtc. tm_sec, rtc. tm_isdst, rtc. tm_zone, rtc. tm_gmtoff ); + fprintf ( log, "Wakeup time: %02d.%02d.%04d %02d:%02d:%02d DST: %d (TZ: %s, offset: %d)\n", alr. tm_mday, alr. tm_mon + 1, alr. tm_year + 1900, alr. tm_hour, alr. tm_min, alr. tm_sec, alr. tm_isdst, alr. tm_zone, alr. tm_gmtoff ); + + fprintf ( log, "System/RTC diff: %d seconds\n", ( syst - rtct ) - sys. tm_gmtoff ); + + rtc_sys_diff = ( syst - rtct ) - sys. tm_gmtoff; if ( fix_rtc && (( rtc_sys_diff < -4 ) || ( rtc_sys_diff > 4 ))) { struct tm set; set = *gmtime ( &syst ); fprintf ( log, "Correcting RTC: %d seconds\n", rtc_sys_diff ); if ( ioctl ( fd, RTC_SET_TIME, &set ) < 0 ) error_msg_and_die ( 1, "ioctl RTC_SET_TIME" ); } // set alarm time if ( ioctl ( fd, RTC_ALM_SET, &alr ) < 0 ) error_msg_and_die ( 1, "ioctl RTC_ALM_SET" ); // enable alarm irq if ( ioctl ( fd, RTC_AIE_ON, 0 ) < 0 ) error_msg_and_die ( 1, "ioctl RTC_AIE_ON" ); log_msg ( "SLEEPING\n" ); // wait for alarm irq if ( read ( fd, buf, sizeof( unsigned long )) < 0 ) error_msg_and_die ( 1, "read rtc alarm" ); log_msg ( "WAKEUP\n" ); // disable alarm irq if ( ioctl ( fd, RTC_AIE_OFF, 0 ) < 0 ) error_msg_and_die ( 1, "ioctl RTC_AIE_OFF" ); close ( fd ); log_msg ( "EXITING\n" ); fclose ( log ); remove_pidfile ( ); return 0; } int onac ( void ) { FILE *fp; int on = 0; 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 ) { // opiealarm -s got it's RTC signal -> wake up by RTC if ( resuspend && onac ( )) { time_t start, now; char *argv [4]; if ( !fork_with_pidfile ( )) return 4; // sleep <resuspend> sec (not less!) time ( &start ); do { sleep ( 1 ); time ( &now ); } while (( now - start ) < resuspend ); if ( onac ( )) { // still on ac // system() without fork argv[0] = "qcop"; argv[1] = "QPE/Desktop"; argv[2] = "suspend()"; argv[3] = 0; // hard coded for now ...but needed setenv ( "LOGNAME", "root", 1 ); setenv ( "HOME", "/root", 1 ); setenv ( "LD_LIBRARY_PATH", "/opt/QtPalmtop/lib", 1 ); setenv ( "QTDIR", "/opt/QtPalmtop", 1 ); remove_pidfile ( ); execv ( "/opt/QtPalmtop/bin/qcop", argv ); perror ( "exec for qcop failed" ); return 5; } } } return 0; } |