linux-kernel - RE: [PATCH] scsi: scsi_devinfo.c: Cleaning up unnecessarily complicated in conjunction with strncpy

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Date:	Sun, 14 Sep 2014 22:38:02 +0000
From:	"Elliott, Robert (Server Storage)" <Elliott@...com>
To:	Rickard Strandqvist <rickard_strandqvist@...ctrumdigital.se>
CC:	"James E.J. Bottomley" <JBottomley@...allels.com>,
	"linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH] scsi: scsi_devinfo.c: Cleaning up unnecessarily
 complicated in conjunction with strncpy



> -----Original Message-----
> From: Rickard Strandqvist [mailto:rickard_strandqvist@...ctrumdigital.se]
> How do you mean?
> 
> strncpy zeroes throughout the remainder of the string "from" until the
> length off to_length, or otherwise guaranteed trailing zero characters
> and a warning is printed.
> 
> Is not it exactly the functionality that is desired?

Ah, I see that in man 3 strcpy: 
    "If the length of src is less than n, strncpy() pads the 
     remainder of dest with null bytes."

I agree that should work.

---
Rob Elliott    HP Server Storage