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f2fs: Advertise encrypted casefolding in sysfs

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Older kernels don't support encryption with casefolding. This adds
the sysfs entry encrypted_casefold to show support for those combined
features. Support for this feature was originally added by
commit 7ad08a58bf ("f2fs: Handle casefolding with Encryption")

Fixes: 7ad08a58bf ("f2fs: Handle casefolding with Encryption")
Cc: stable@vger.kernel.org # v5.11+
Signed-off-by: Daniel Rosenberg <drosen@google.com>
Reviewed-by: Eric Biggers <ebiggers@google.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Daniel Rosenberg 2021-06-03 09:50:38 +00:00 committed by Jaegeuk Kim
parent 39307f8ee3
commit 4c039d5452
1 changed files with 8 additions and 0 deletions
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8
fs/f2fs/sysfs.c
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@ -583,6 +583,7 @@ enum feat_id {
FEAT_COMPRESSION,
FEAT_RO,
FEAT_TEST_DUMMY_ENCRYPTION_V2,
FEAT_ENCRYPTED_CASEFOLD,
};
static ssize_t f2fs_feature_show(struct f2fs_attr *a,
@ -605,6 +606,7 @@ static ssize_t f2fs_feature_show(struct f2fs_attr *a,
case FEAT_COMPRESSION:
case FEAT_RO:
case FEAT_TEST_DUMMY_ENCRYPTION_V2:
case FEAT_ENCRYPTED_CASEFOLD:
return sprintf(buf, "supported\n");
}
return 0;
@ -709,7 +711,10 @@ F2FS_GENERAL_RO_ATTR(avg_vblocks);
#ifdef CONFIG_FS_ENCRYPTION
F2FS_FEATURE_RO_ATTR(encryption, FEAT_CRYPTO);
F2FS_FEATURE_RO_ATTR(test_dummy_encryption_v2, FEAT_TEST_DUMMY_ENCRYPTION_V2);
#ifdef CONFIG_UNICODE
F2FS_FEATURE_RO_ATTR(encrypted_casefold, FEAT_ENCRYPTED_CASEFOLD);
#endif
#endif /* CONFIG_FS_ENCRYPTION */
#ifdef CONFIG_BLK_DEV_ZONED
F2FS_FEATURE_RO_ATTR(block_zoned, FEAT_BLKZONED);
#endif
@ -822,7 +827,10 @@ static struct attribute *f2fs_feat_attrs[] = {
#ifdef CONFIG_FS_ENCRYPTION
ATTR_LIST(encryption),
ATTR_LIST(test_dummy_encryption_v2),
#ifdef CONFIG_UNICODE
ATTR_LIST(encrypted_casefold),
#endif
#endif /* CONFIG_FS_ENCRYPTION */
#ifdef CONFIG_BLK_DEV_ZONED
ATTR_LIST(block_zoned),
#endif