jacob.windle/hb
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Working on a signal handling loop.

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This commit is contained in:
Jacob Windle 2020-01-14 09:05:40 -05:00
parent e8e14eab28
commit 1b6d185d39
1 changed files with 17 additions and 21 deletions
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38
main.c
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@ -32,24 +32,6 @@ static char *HOSTFILE = "/etc/hosts";
static char *CONFIG; static char *CONFIG;
// Our configuration // Our configuration
/**
* SIGINT handler, cleans up resources on Ctrl-C
* @param signal
*/
void int_handler(int signal) {
// Clean up any resources.
fprintf(stderr, "SIGINT received, cleaning up...\n");
// This should be the final decrement to the config object.
}
/**
* SIGHUP handler, will reload the configuration file.
* @param signal Signo passed by system.
*/
void hup_handler(int signal) {
}
void replacehost(char *oldhost, char *newhost); void replacehost(char *oldhost, char *newhost);
@ -161,9 +143,24 @@ int read_config_file() {
* Wake up on SIGALRM to do our thing. * Wake up on SIGALRM to do our thing.
*/ */
void run_loop(int signal) { void run_loop(int signal) {
read_config_file(); const sigset_t sigset;
sigaddset(&sigset, SIGALRM);
sigaddset(&sigset, SIGINT);
alarm(HB_PERIOD); int signo;
for (;;){
sigwait(&sigset, &signo);
if (signo == SIGINT) {
break;
}
else if (signo == SIGALRM) {
fprintf(stderr, "Waking up and reading config..\n");
read_config_file();
alarm(HB_PERIOD);
}
}
} }
/** /**
@ -171,7 +168,6 @@ void run_loop(int signal) {
*/ */
int main(int argc, char **argv) int main(int argc, char **argv)
{ {
signal(SIGINT, int_handler);
if (getuid() != 0) if (getuid() != 0)
{ {
fprintf(stderr, "hb: Must run as root using sudo!\n"); fprintf(stderr, "hb: Must run as root using sudo!\n");