RDWR); if (fd < 0) { perror(console); exit(EXIT_FAILURE); } if (ioctl(fd, VT_GETHIFONTMASK, &mask ... perror("VT_GETHIFONTMASK"); exit(EXIT_FAILURE); } (void) close(fd); fd = open(…RDWR); if (fd < 0) { perror(console); exit(EXIT_FAILURE); } if (ioctl(fd, VT_GETHIFONTMASK, &mask ... perror("VT_GETHIFONTMASK"); exit(EXIT_FAILURE); } (void) close(fd); fd = open(…include #define errExit(msg) do { perror(msg); exit(EXIT_FAILURE); \ } while (0) int main ... Usage: %s backing-file\n", argv[0]); exit(EXIT_FAILURE); } loopctlfd = open("/dev/lo…include #define errExit(msg) do { perror(msg); exit(EXIT_FAILURE); \ } while (0) int main ... Usage: %s backing-file\n", argv[0]); exit(EXIT_FAILURE); } loopctlfd = open("/dev/lo…