sys_link 32 arch/arm64/include/asm/unistd32.h __SYSCALL(__NR_link, sys_link) sys_link 1035 include/linux/syscalls.h asmlinkage long sys_link(const char __user *oldname, sys_link 1978 tools/include/nolibc/nolibc.h int ret = sys_link(old, new);