1#include <stdio.h> 2#include <unistd.h> 3 4int main(int argc, char *argv[]) 5{ 6 const char *dev_name = "/dev/kmsg"; 7 8 if (argc > 1) 9 dev_name = argv[1]; 10 11 if (access(dev_name, F_OK) < 0) { 12 perror(dev_name); 13 return 1; 14 } 15 16 return 0; 17}