#include <sys/param.h>
#include <sys/sysctl.h>
#include <syslog.h>
#include <stdlib.h>
unsigned long __guard = 0UL; static void __guard_setup(void) __attribute__ ((constructor));
void __stack_smash_handler(char func[], int damaged __attribute__ ((unused)));
static void __guard_setup(void) { if (__guard != 0UL) return; __guard = 0xFF0A0D00UL; }

void __stack_smash_handler(char func[], int damaged) { 
	syslog(LOG_CRIT, "stack overflow in function %s(); %s=%p __guard_setup=%p __guard=%p " \
		"PPID=%d PID=%d UID=%d EUID=%d GID=%d EGID=%d", 
		func, func, __guard_setup, __guard,
		getppid(), getpid(), getuid(), geteuid(), getgid(), getegid());
	{
		char buf[50];
		snprintf(buf, sizeof(buf)-1, "cat /proc/%d/status", getpid());
		system(buf);
		snprintf(buf, sizeof(buf)-1, "cat /proc/%d/maps", getpid());
		system(buf);
	}
}