utils-std

echosig.c (640B)

// utils-std: Collection of commonly available Unix tools
// SPDX-FileCopyrightText: 2017 Haelwenn (lanodan) Monnier <contact+utils@hacktivis.me>
// SPDX-License-Identifier: CC0-1.0 OR WTFPL
#define _DEFAULT_SOURCE
#include "../lib/sys_signame.h"
#include <signal.h>
#include <stdio.h>
int
main(void)
{
	sigset_t sigset;
	int sig = -1;
	if(sigfillset(&sigset) != 0) return 1;
	if(sigprocmask(SIG_BLOCK, &sigset, NULL) != 0) return 1;
	if(sigwait(&sigset, &sig) != 0) return 1;
	if(sig > 0 && sig < NSIG && util_sys_signame[sig] != NULL)
	{
		printf("%s\n", util_sys_signame[sig]);
	}
	else
	{
		printf("%d\n", sig);
	}
	return 0;
}