linux-ext4 - [man-pages PATCH v2] statx.2: document STATX_ATTR

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Message-Id: <20200128192449.260550-1-ebiggers@kernel.org>
Date:   Tue, 28 Jan 2020 11:24:49 -0800
From:   Eric Biggers <ebiggers@...nel.org>
To:     mtk.manpages@...il.com
Cc:     linux-man@...r.kernel.org, linux-fscrypt@...r.kernel.org,
        linux-ext4@...r.kernel.org, linux-f2fs-devel@...ts.sourceforge.net,
        linux-fsdevel@...r.kernel.org
Subject: [man-pages PATCH v2] statx.2: document STATX_ATTR_VERITY

From: Eric Biggers <ebiggers@...gle.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@...gle.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