From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.89 #1 (Red Hat Linux)) id 1eXTIm-0002OM-GZ for barebox@lists.infradead.org; Fri, 05 Jan 2018 14:48:59 +0000 Date: Fri, 5 Jan 2018 15:48:43 +0100 From: Sascha Hauer Message-ID: <20180105144843.rtr3ht5vikftwdnl@pengutronix.de> References: <20171220103644.10918-1-u.kleine-koenig@pengutronix.de> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20171220103644.10918-1-u.kleine-koenig@pengutronix.de> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="iso-8859-15" Content-Transfer-Encoding: quoted-printable Sender: "barebox" Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: Re: [PATCH] string.h: Implement strndup To: Uwe =?iso-8859-15?Q?Kleine-K=F6nig?= Cc: barebox@lists.infradead.org On Wed, Dec 20, 2017 at 11:36:44AM +0100, Uwe Kleine-K=F6nig wrote: > I implemented this while trying to import mmc-utils into barebox. While > I didn't finish this import this function might still be useful for > someone?! > = > Signed-off-by: Uwe Kleine-K=F6nig I find it useful, so: Applied, thanks Sascha > --- > include/linux/string.h | 3 +++ > lib/string.c | 20 ++++++++++++++++++++ > 2 files changed, 23 insertions(+) > = > diff --git a/include/linux/string.h b/include/linux/string.h > index 5df8c50e579a..ed4eeb5519e6 100644 > --- a/include/linux/string.h > +++ b/include/linux/string.h > @@ -80,6 +80,9 @@ extern __kernel_size_t strnlen(const char *,__kernel_si= ze_t); > #ifndef __HAVE_ARCH_STRDUP > extern char * strdup(const char *); > #endif > +#ifndef __HAVE_ARCH_STRNDUP > +extern char *strndup(const char *, size_t); > +#endif > #ifndef __HAVE_ARCH_STRSWAB > extern char * strswab(const char *); > #endif > diff --git a/lib/string.c b/lib/string.c > index 1d491c9c2fb5..f588933e8191 100644 > --- a/lib/string.c > +++ b/lib/string.c > @@ -323,6 +323,26 @@ char * strdup(const char *s) > #endif > EXPORT_SYMBOL(strdup); > = > +#ifndef __HAVE_ARCH_STRNDUP > +char *strndup(const char *s, size_t n) > +{ > + char *new; > + size_t len =3D strnlen(s, n); > + > + if ((s =3D=3D NULL) || > + ((new =3D malloc(len + 1)) =3D=3D NULL)) { > + return NULL; > + } > + > + memcpy(new, s, len); > + new[len] =3D '\0'; > + > + return new; > +} > + > +#endif > +EXPORT_SYMBOL(strndup); > + > #ifndef __HAVE_ARCH_STRSPN > /** > * strspn - Calculate the length of the initial substring of @s which on= ly > -- = > 2.11.0 > = > = > _______________________________________________ > barebox mailing list > barebox@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/barebox -- = Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox