sys_mknod 42 arch/arm64/include/asm/unistd32.h __SYSCALL(__NR_mknod, sys_mknod) sys_mknod 1038 include/linux/syscalls.h asmlinkage long sys_mknod(const char __user *filename, umode_t mode, sys_mknod 2014 tools/include/nolibc/nolibc.h int ret = sys_mknod(path, mode, dev);