From: Daniel Rosenberg <drosen@xxxxxxxxxx>
commit 4c039d5452691fe80260e4c3dd7b629a095bd0a7 upstream.
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 7ad08a58bf67 ("f2fs: Handle casefolding with Encryption")
Fixes: 7ad08a58bf67 ("f2fs: Handle casefolding with Encryption")
Cc: stable@xxxxxxxxxxxxxxx # v5.11+
Signed-off-by: Daniel Rosenberg <drosen@xxxxxxxxxx>
Reviewed-by: Eric Biggers <ebiggers@xxxxxxxxxx>
Reviewed-by: Chao Yu <yuchao0@xxxxxxxxxx>
Signed-off-by: Jaegeuk Kim <jaegeuk@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/f2fs/sysfs.c | 8 ++++++++
1 file changed, 8 insertions(+)
--- a/fs/f2fs/sysfs.c
+++ b/fs/f2fs/sysfs.c
@@ -562,6 +562,7 @@ enum feat_id {
FEAT_CASEFOLD,
FEAT_COMPRESSION,
FEAT_TEST_DUMMY_ENCRYPTION_V2,
+ FEAT_ENCRYPTED_CASEFOLD,
};
static ssize_t f2fs_feature_show(struct f2fs_attr *a,
@@ -583,6 +584,7 @@ static ssize_t f2fs_feature_show(struct
case FEAT_CASEFOLD:
case FEAT_COMPRESSION:
case FEAT_TEST_DUMMY_ENCRYPTION_V2:
+ case FEAT_ENCRYPTED_CASEFOLD:
return sprintf(buf, "supported\n");
}
return 0;
@@ -687,7 +689,10 @@ 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
@@ -786,7 +791,10 @@ 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
