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Re: [PATCH] uapi glibc compat: fix build if libc defines IFF_ECHO

From Mikko Rapeli <mikko.rapeli@iki.fi>
Newsgroups linux.kernel
Subject Re: [PATCH] uapi glibc compat: fix build if libc defines IFF_ECHO
Date 2017-01-21 18:10 +0100
Message-ID <t27kS-6B1-19@gated-at.bofh.it> (permalink)
References <t26Ia-68U-5@gated-at.bofh.it>
Organization linux.* mail to news gateway

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Hi,

Cc'ing netdev@vger.kernel.org.

On Sat, Jan 21, 2017 at 05:26:54PM +0100, Hauke Mehrtens wrote:
> musl 1.1.15 defines IFF_ECHO and the other net_device_flags options.
> When a user application includes linux/if.h and net/if.h the compile
> will fail.
> 
> Activate __UAPI_DEF_IF_NET_DEVICE_FLAGS_LOWER_UP_DORMANT_ECHO only when
> it is needed. This should also make this work in case glibc will add
> these defines.
> 
> Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

Looks good.

Reviewed-by: Mikko Rapeli <mikko.rapeli@iki.fi>

> ---
>  include/uapi/linux/libc-compat.h | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/include/uapi/linux/libc-compat.h b/include/uapi/linux/libc-compat.h
> index 44b8a6bd5fe1..dbf16a3de4d2 100644
> --- a/include/uapi/linux/libc-compat.h
> +++ b/include/uapi/linux/libc-compat.h
> @@ -64,9 +64,11 @@
>  /* Everything up to IFF_DYNAMIC, matches net/if.h until glibc 2.23 */
>  #define __UAPI_DEF_IF_NET_DEVICE_FLAGS 0
>  /* For the future if glibc adds IFF_LOWER_UP, IFF_DORMANT and IFF_ECHO */
> +#ifndef IFF_ECHO
>  #ifndef __UAPI_DEF_IF_NET_DEVICE_FLAGS_LOWER_UP_DORMANT_ECHO
>  #define __UAPI_DEF_IF_NET_DEVICE_FLAGS_LOWER_UP_DORMANT_ECHO 1
>  #endif /* __UAPI_DEF_IF_NET_DEVICE_FLAGS_LOWER_UP_DORMANT_ECHO */
> +#endif /* IFF_ECHO */
>  
>  #else /* _NET_IF_H */
>  
> -- 
> 2.11.0
> 

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[PATCH] uapi glibc compat: fix build if libc defines IFF_ECHO Hauke Mehrtens <hauke@hauke-m.de> - 2017-01-21 17:30 +0100
  Re: [PATCH] uapi glibc compat: fix build if libc defines IFF_ECHO Mikko Rapeli <mikko.rapeli@iki.fi> - 2017-01-21 18:10 +0100

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