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From: Peter Kjellerstedt <peter.kjellerstedt@axis.com>
To: "'Olaf Dietsche'" <olaf.dietsche#list.linux-kernel@t-online.de>,
       linux-kernel@vger.kernel.org
Subject: RE: [PATCH] 2.5.47: strdup()
Date: Sat, 16 Nov 2002 09:48:57 +0100
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> -----Original Message-----
> From: Olaf Dietsche 
> [mailto:olaf.dietsche#list.linux-kernel@t-online.de] 
> Sent: Saturday, November 16, 2002 07:21
> To: linux-kernel@vger.kernel.org
> Cc: trivial@rustcorp.com.au
> Subject: [PATCH] 2.5.47: strdup()
> 
> This *untested* patch adds strdup(). There are about five or six
> different strdup() implementations in various parts of the kernel.
> 
> Regards, Olaf.

[snip]

> +#ifndef __HAVE_ARCH_STRDUP
> +/**
> + * strdup - allocate memory and duplicate a string
> + */
> +char *strdup(const char *s)
> +{
> +	char *p = kmalloc(strlen(s) + 1, GFP_KERNEL);
> +	if (p)
> +		strcpy(p, s);
> +
> +	return p;
>  }
>  #endif

You should make sure s != NULL before doing anything else.

//Peter
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