RE: [PATCH] 2.5.47: strdup()

Peter Kjellerstedt (peter.kjellerstedt@axis.com)
Sat, 16 Nov 2002 09:48:57 +0100


> -----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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