[f2fs-dev] [man-pages PATCH v2] statx.2: document STATX_ATTR_VERITY

[f2fs-dev] [man-pages PATCH v2] statx.2: document STATX_ATTR_VERITY

[Eric Biggers]

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

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
-- 
2.25.0.341.g760bfbb309-goog



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Re: [f2fs-dev] [man-pages PATCH v2] statx.2: document STATX_ATTR_VERITY

[Eric Biggers]

On Tue, Jan 28, 2020 at 11:24:49AM -0800, 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
> 
> 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
> -- 
> 2.25.0.341.g760bfbb309-goog
> 

Ping?  Michael, can you apply this man-pages patch?

- Eric


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Re: [f2fs-dev] [man-pages PATCH v2] statx.2: document STATX_ATTR_VERITY

[Michael Kerrisk (man-pages)]

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/


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