ecryptfs: remove version_str file from sysfs

This file violates the one-value-per-file sysfs rule.

If you all want it added back, please do something like a per-feature
file to show what is present and what isn't.

Cc: Kay Sievers <kay.sievers@vrfy.org>
Cc: Mike Halcrow <mhalcrow@us.ibm.com>
Cc: Phillip Hellewell <phillip@hellewell.homeip.net>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

fs/ecryptfs/main.c

@@ -744,51 +744,8 @@ static ssize_t version_show(struct kobject *kobj,
 
 static struct kobj_attribute version_attr = __ATTR_RO(version);
 
-static struct ecryptfs_version_str_map_elem {
-	u32 flag;
-	char *str;
-} ecryptfs_version_str_map[] = {
-	{ECRYPTFS_VERSIONING_PASSPHRASE, "passphrase"},
-	{ECRYPTFS_VERSIONING_PUBKEY, "pubkey"},
-	{ECRYPTFS_VERSIONING_PLAINTEXT_PASSTHROUGH, "plaintext passthrough"},
-	{ECRYPTFS_VERSIONING_POLICY, "policy"},
-	{ECRYPTFS_VERSIONING_XATTR, "metadata in extended attribute"},
-	{ECRYPTFS_VERSIONING_MULTKEY, "multiple keys per file"}
-};
-
-static ssize_t version_str_show(struct kobject *kobj,
-				struct kobj_attribute *attr, char *buff)
-{
-	int i;
-	int remaining = PAGE_SIZE;
-	int total_written = 0;
-
-	buff[0] = '\0';
-	for (i = 0; i < ARRAY_SIZE(ecryptfs_version_str_map); i++) {
-		int entry_size;
-
-		if (!(ECRYPTFS_VERSIONING_MASK
-		      & ecryptfs_version_str_map[i].flag))
-			continue;
-		entry_size = strlen(ecryptfs_version_str_map[i].str);
-		if ((entry_size + 2) > remaining)
-			goto out;
-		memcpy(buff, ecryptfs_version_str_map[i].str, entry_size);
-		buff[entry_size++] = '\n';
-		buff[entry_size] = '\0';
-		buff += entry_size;
-		total_written += entry_size;
-		remaining -= entry_size;
-	}
-out:
-	return total_written;
-}
-
-static struct kobj_attribute version_attr_str = __ATTR_RO(version_str);
-
 static struct attribute *attributes[] = {
 	&version_attr.attr,
-	&version_attr_str.attr,
 	NULL,
 };