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Re: [tyndur-devel] [PATCH 3/6] libc: POSIX: Endianess-Umwandlung



On Mon, Jan 05 22:23, Kevin Wolf wrote:
> + libc: POSIX: htonl(), htons(), ntohl(), ntohs()
> ---
>  src/modules/include/netinet/in.h |   45 ++++++++++++++++++++++++++++++
>  src/modules/lib/posix/net.c      |   57 ++++++++++++++++++++++++++++++++++++++
>  2 files changed, 102 insertions(+), 0 deletions(-)
>  create mode 100644 src/modules/include/netinet/in.h
>  create mode 100644 src/modules/lib/posix/net.c
> 
> diff --git a/src/modules/include/netinet/in.h b/src/modules/include/netinet/in.h
> new file mode 100644
> index 0000000..effc214
> --- /dev/null
> +++ b/src/modules/include/netinet/in.h
> @@ -0,0 +1,45 @@
> +/*
> + * Copyright (c) 2009 The tyndur Project. All rights reserved.
> + *
> + * This code is derived from software contributed to the tyndur Project
> + * by Kevin Wolf.
> + *
> + * Redistribution and use in source and binary forms, with or without
> + * modification, are permitted provided that the following conditions
> + * are met:
> + * 1. Redistributions of source code must retain the above copyright
> + *    notice, this list of conditions and the following disclaimer.
> + * 2. Redistributions in binary form must reproduce the above copyright
> + *    notice, this list of conditions and the following disclaimer in the
> + *    documentation and/or other materials provided with the distribution.
> + * 3. All advertising materials mentioning features or use of this software
> + *    must display the following acknowledgement:
> + *     This product includes software developed by the tyndur Project
> + *     and its contributors.
> + * 4. Neither the name of the tyndur Project nor the names of its
> + *    contributors may be used to endorse or promote products derived
> + *    from this software without specific prior written permission.
> + *
> + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
> + * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
> + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
> + * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
> + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
> + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
> + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
> + * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
> + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
> + * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
> + * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
> + */
> +
> +#ifndef _NETINET_IN_H_
> +#define _NETINET_IN_H_
> +
> +unsigned long int htonl(unsigned long int hostlong);
> +unsigned short int htons(unsigned short int hostshort);
> +unsigned long int ntohl(unsigned long int netlong);
> +unsigned short int ntohs(unsigned short int netshort);
> +
> +#endif
> +
> diff --git a/src/modules/lib/posix/net.c b/src/modules/lib/posix/net.c
> new file mode 100644
> index 0000000..c03bfd0
> --- /dev/null
> +++ b/src/modules/lib/posix/net.c
> @@ -0,0 +1,57 @@
> +/*
> + * Copyright (c) 2009 The tyndur Project. All rights reserved.
> + *
> + * This code is derived from software contributed to the tyndur Project
> + * by Kevin Wolf.
> + *
> + * Redistribution and use in source and binary forms, with or without
> + * modification, are permitted provided that the following conditions
> + * are met:
> + * 1. Redistributions of source code must retain the above copyright
> + *    notice, this list of conditions and the following disclaimer.
> + * 2. Redistributions in binary form must reproduce the above copyright
> + *    notice, this list of conditions and the following disclaimer in the
> + *    documentation and/or other materials provided with the distribution.
> + * 3. All advertising materials mentioning features or use of this software
> + *    must display the following acknowledgement:
> + *     This product includes software developed by the tyndur Project
> + *     and its contributors.
> + * 4. Neither the name of the tyndur Project nor the names of its
> + *    contributors may be used to endorse or promote products derived
> + *    from this software without specific prior written permission.
> + *
> + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
> + * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
> + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
> + * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
> + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
> + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
> + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
> + * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
> + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
> + * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
> + * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
> + */
> +
> +#include <netinet/in.h>
> +#include <network.h>
> +
> +unsigned long int htonl(unsigned long int hostlong)
> +{
> +    return big_endian_dword(hostlong);
> +}
> +
> +unsigned short int htons(unsigned short int hostshort)
> +{
> +    return big_endian_word(hostshort);
> +}
> +
> +unsigned long int ntohl(unsigned long int netlong)
> +{
> +    return big_endian_dword(netlong);
> +}
> +
> +unsigned short int ntohs(unsigned short int netshort)
> +{
> +    return big_endian_dword(netshort);
> +}

Hm, könntest du das nicht auch als Makro oder wenigstens static Inline
implementieren? Oder schreibt POSIX da irgenwas vor?

-- 
Antoine Kaufmann
<toni@xxxxxxxxxxxxxxxx>

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