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Subject: Re: [man-pages PATCH v2] statx.2: document STATX_ATTR_VERITY
To:     Eric Biggers <ebiggers@kernel.org>
References: <20200128192449.260550-1-ebiggers@kernel.org>
From:   "Michael Kerrisk (man-pages)" <mtk.manpages@gmail.com>
Message-ID: <451297df-2371-336e-d058-4cd6b4ed9754@gmail.com>
Date:   Thu, 12 Mar 2020 09:26:30 +0100
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Hello Eric,

On 1/28/20 8:24 PM, Eric Biggers wrote:
> From: Eric Biggers <ebiggers@google.com>
> 
> Document the verity attribute for statx(), which was added in
> Linux 5.5.
> 
> For more context, see the fs-verity documentation:
> https://www.kernel.org/doc/html/latest/filesystems/fsverity.html

Thanks for the patch! Applied.

Cheers,

Michael

> Signed-off-by: Eric Biggers <ebiggers@google.com>
> ---
>  man2/statx.2 | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/man2/statx.2 b/man2/statx.2
> index d2f1b07b8..d015ee73d 100644
> --- a/man2/statx.2
> +++ b/man2/statx.2
> @@ -461,6 +461,11 @@ See
>  .TP
>  .B STATX_ATTR_ENCRYPTED
>  A key is required for the file to be encrypted by the filesystem.
> +.TP
> +.B STATX_ATTR_VERITY
> +Since Linux 5.5: the file has fs-verity enabled.  It cannot be written to, and
> +all reads from it will be verified against a cryptographic hash that covers the
> +entire file, e.g. via a Merkle tree.
>  .SH RETURN VALUE
>  On success, zero is returned.
>  On error, \-1 is returned, and
> 


-- 
Michael Kerrisk
Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/
Linux/UNIX System Programming Training: http://man7.org/training/