linux-kernel - Re: [PATCH 0309/1285] Replace numeric parameter like 0444 with macro

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Date:	Wed, 03 Aug 2016 12:07:19 +0930
From:	Rusty Russell <rusty@...tcorp.com.au>
To:	Baole Ni <baolex.ni@...el.com>, rpurdie@...ys.net,
	j.anaszewski@...sung.com, hal.rosenstock@...il.com,
	dledford@...hat.com, sean.hefty@...el.com, bp@...en8.de
Cc:	lguest@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
	mingo@...nel.org, chuansheng.liu@...el.com, baolex.ni@...el.com
Subject: Re: [PATCH 0309/1285] Replace numeric parameter like 0444 with macro

Baole Ni <baolex.ni@...el.com> writes:
> I find that the developers often just specified the numeric value
> when calling a macro which is defined with a parameter for access permission.
> As we know, these numeric value for access permission have had the corresponding macro,
> and that using macro can improve the robustness and readability of the code,
> thus, I suggest replacing the numeric parameter with the macro.

I find the numbers far, far more readable.

Cheers,
Rusty.

>  /* Allow Guests to use a non-128 (ie. non-Linux) syscall trap. */
>  static unsigned int syscall_vector = IA32_SYSCALL_VECTOR;
> -module_param(syscall_vector, uint, 0444);
> +module_param(syscall_vector, uint, S_IRUSR | S_IRGRP | S_IROTH);
>  
>  /* The address of the interrupt handler is split into two bits: */
>  static unsigned long idt_address(u32 lo, u32 hi)
> -- 
> 2.9.2