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#include <signal.h>
#include <unistd.h>
static int exit_flag = 0;
static void sig_term_handler(int sig)
{
exit_flag = 1;
}
int main(int argc, char **argv)
{
int ignore = 0;
int handlers = 1;;
if (argc != 2)
return -1;
/*
* 1 - handlers
* 2 - no handlers
* 3 - ignore term/int
*/
switch(*argv[1]) {
case '1': handlers = 1; break;
case '2': handlers = 0; break;
case '3': ignore = 1; break;
default:
return -1;
}
if (handlers) {
if ((signal(SIGTERM, sig_term_handler) == SIG_ERR) ||
(signal(SIGINT, sig_term_handler) == SIG_ERR))
return -1;
}
while(!exit_flag || ignore) {
usleep(100);
}
return 0;
}
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