Re: [PATCH] mmap.2: fix EINVAL conditions

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Ping.

On Mon, 2019-06-24 at 13:20 +0200, Nikola Forró wrote:
> Since introduction of MAP_SHARED_VALIDATE, in case flags contain
> both MAP_PRIVATE and MAP_SHARED, mmap() doesn't fail with EINVAL,
> it succeeds.
> 
> The reason for that is that MAP_SHARED_VALIDATE is in fact equal
> to MAP_PRIVATE | MAP_SHARED.
> 
> This is intended behavior, see:
> https://lwn.net/Articles/758594/
> https://lwn.net/Articles/758598/
> 
> Signed-off-by: Nikola Forró <nforro@xxxxxxxxxx>
> ---
>  man2/mmap.2 | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/man2/mmap.2 b/man2/mmap.2
> index cea0bd372..b41e8b9ca 100644
> --- a/man2/mmap.2
> +++ b/man2/mmap.2
> @@ -565,11 +565,11 @@ was 0.
>  .TP
>  .B EINVAL
>  .I flags
> -contained neither
> -.B MAP_PRIVATE
> +contained none of
> +.BR MAP_PRIVATE ,
> +.B MAP_SHARED
>  or
> -.BR MAP_SHARED ,
> -or contained both of these values.
> +.BR MAP_SHARED_VALIDATE .
>  .TP
>  .B ENFILE
>  .\" This is for shared anonymous segments




[Index of Archives]     [Kernel Documentation]     [Netdev]     [Linux Ethernet Bridging]     [Linux Wireless]     [Kernel Newbies]     [Security]     [Linux for Hams]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux RAID]     [Linux Admin]     [Samba]

  Powered by Linux