linux-kernel - Re: [PATCH] uapi: avoid namespace conflict in linux/posix

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Date:   Tue, 19 Mar 2019 22:55:20 +0100
From:   Florian Weimer <fw@...eb.enyo.de>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     linux-api@...r.kernel.org, linux-arch@...r.kernel.org,
        netdev@...r.kernel.org, Laura Abbott <labbott@...hat.com>,
        Paul Burton <pburton@...ecomp.com>,
        Deepa Dinamani <deepa.kernel@...il.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] uapi: avoid namespace conflict in linux/posix_types.h

* Arnd Bergmann:

> diff --git a/include/uapi/asm-generic/posix_types.h b/include/uapi/asm-generic/posix_types.h
> index f0733a26ebfc..2a8c68ac88ca 100644
> --- a/include/uapi/asm-generic/posix_types.h
> +++ b/include/uapi/asm-generic/posix_types.h
> @@ -77,7 +77,11 @@ typedef __kernel_long_t	__kernel_ptrdiff_t;
>  
>  #ifndef __kernel_fsid_t
>  typedef struct {
> +#ifdef __KERNEL__
>  	int	val[2];
> +#else
> +	int	__kernel_val[2];
> +#endif
>  } __kernel_fsid_t;
>  #endif
>  
> diff --git a/include/uapi/linux/posix_types.h b/include/uapi/linux/posix_types.h
> index 9a7a740b35a2..a5a5cfc38bbf 100644
> --- a/include/uapi/linux/posix_types.h
> +++ b/include/uapi/linux/posix_types.h
> @@ -23,7 +23,7 @@
>  #define __FD_SETSIZE	1024
>  
>  typedef struct {
> -	unsigned long fds_bits[__FD_SETSIZE / (8 * sizeof(long))];
> +	unsigned long __kernel_fds_bits[__FD_SETSIZE / (8 * sizeof(long))];
>  } __kernel_fd_set;
>  
>  /* Type of a signal handler.  */

Both changes look reasonably to me, but I have not tested them.