Pinkbyte/yasnd
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lock LPT control circuit when receiving SIGTERM

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This commit is contained in:
Sergey Popov 2011-12-19 10:07:48 +04:00
parent 4c1fb5fa9d
commit 989ca201e4
1 changed files with 19 additions and 0 deletions
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19
yasnd.c
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@ -139,6 +139,22 @@ void check_host(int num,host_decl* host)
host->helper_pid=pid; host->helper_pid=pid;
} }
/*
Function, that turn on first LPT port pin and turn off others.
This is needed to lock LPT control circuit, when
management computer is rebooted
*/
void lpt_lock()
{
if (ioperm (lpt_port, 3, 1))
{
log_event("Error: LPT port access error");
exit(EXIT_FAILURE);
}
// Lock circuit
outb (1, lpt_port);
}
/* /*
Function, that turn on only one LPT port pin, defined by it argument, wait a second, Function, that turn on only one LPT port pin, defined by it argument, wait a second,
and turn off all pins. That is enough to reset specified host. and turn off all pins. That is enough to reset specified host.
@ -248,6 +264,9 @@ void signal_handler(int signum)
if (signum==SIGTERM) if (signum==SIGTERM)
{ {
log_event("SIGTERM captured, daemon stopping"); log_event("SIGTERM captured, daemon stopping");
// block LPT control circuit
if (lpt_enable)
lpt_lock();
// close log decriptor // close log decriptor
closelog(); closelog();
// free resources // free resources