sys_dup 96 arch/arm64/include/asm/unistd32.h __SYSCALL(__NR_dup, sys_dup) sys_dup 368 include/linux/syscalls.h asmlinkage long sys_dup(unsigned int fildes); sys_dup 94 include/uapi/asm-generic/unistd.h __SYSCALL(__NR_dup, sys_dup) sys_dup 94 tools/include/uapi/asm-generic/unistd.h __SYSCALL(__NR_dup, sys_dup)