linux-ext4 - [PATCH] libext2fs: add verity flag to EXT2_LIB_FEATURE_RO_COMPAT

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Message-Id: <20180821001552.25278-1-ebiggers@kernel.org>
Date:   Mon, 20 Aug 2018 17:15:52 -0700
From:   Eric Biggers <ebiggers@...nel.org>
To:     Theodore Ts'o <tytso@....edu>, linux-ext4@...r.kernel.org
Subject: [PATCH] libext2fs: add verity flag to EXT2_LIB_FEATURE_RO_COMPAT_SUPP

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

The new ro_compat filesystem feature flag for fs-verity was added to
EXT2_FEATURE_RO_COMPAT_SUPP, but that's not actually used by e2fsprogs
itself.  So contrary to the v1.44.4 release notes, 'mke2fs -O verity'
doesn't actually work, nor does e2fsck allow the filesystem to have the
verity feature.  Fix it by adding the flag to the correct place
(EXT2_LIB_FEATURE_RO_COMPAT_SUPP) too.

Fixes: faae7aa00df0 ("Reserve codepoints for the fsverity feature.")
Signed-off-by: Eric Biggers <ebiggers@...gle.com>
---
 lib/ext2fs/ext2fs.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/ext2fs/ext2fs.h b/lib/ext2fs/ext2fs.h
index c4a4ef01..185be5df 100644
--- a/lib/ext2fs/ext2fs.h
+++ b/lib/ext2fs/ext2fs.h
@@ -630,7 +630,8 @@ typedef struct ext2_icount *ext2_icount_t;
 					 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM|\
 					 EXT4_FEATURE_RO_COMPAT_READONLY |\
 					 EXT4_FEATURE_RO_COMPAT_PROJECT |\
-					 EXT4_FEATURE_RO_COMPAT_SHARED_BLOCKS)
+					 EXT4_FEATURE_RO_COMPAT_SHARED_BLOCKS |\
+					 EXT4_FEATURE_RO_COMPAT_VERITY)
 
 /*
  * These features are only allowed if EXT2_FLAG_SOFTSUPP_FEATURES is passed
-- 
2.18.0.865.gffc8e1a3cd6-goog