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Diffstat (limited to 'fs/ext4/super.c')
-rw-r--r--fs/ext4/super.c122
1 files changed, 0 insertions, 122 deletions
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index ea8255a03305..7f6cd2473163 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -1495,128 +1495,6 @@ static int ext4_nfs_commit_metadata(struct inode *inode)
return ext4_write_inode(inode, &wbc);
}
-#ifdef CONFIG_FS_ENCRYPTION
-static int ext4_get_context(struct inode *inode, void *ctx, size_t len)
-{
- return ext4_xattr_get(inode, EXT4_XATTR_INDEX_ENCRYPTION,
- EXT4_XATTR_NAME_ENCRYPTION_CONTEXT, ctx, len);
-}
-
-static int ext4_set_context(struct inode *inode, const void *ctx, size_t len,
- void *fs_data)
-{
- handle_t *handle = fs_data;
- int res, res2, credits, retries = 0;
-
- /*
- * Encrypting the root directory is not allowed because e2fsck expects
- * lost+found to exist and be unencrypted, and encrypting the root
- * directory would imply encrypting the lost+found directory as well as
- * the filename "lost+found" itself.
- */
- if (inode->i_ino == EXT4_ROOT_INO)
- return -EPERM;
-
- if (WARN_ON_ONCE(IS_DAX(inode) && i_size_read(inode)))
- return -EINVAL;
-
- if (ext4_test_inode_flag(inode, EXT4_INODE_DAX))
- return -EOPNOTSUPP;
-
- res = ext4_convert_inline_data(inode);
- if (res)
- return res;
-
- /*
- * If a journal handle was specified, then the encryption context is
- * being set on a new inode via inheritance and is part of a larger
- * transaction to create the inode. Otherwise the encryption context is
- * being set on an existing inode in its own transaction. Only in the
- * latter case should the "retry on ENOSPC" logic be used.
- */
-
- if (handle) {
- res = ext4_xattr_set_handle(handle, inode,
- EXT4_XATTR_INDEX_ENCRYPTION,
- EXT4_XATTR_NAME_ENCRYPTION_CONTEXT,
- ctx, len, 0);
- if (!res) {
- ext4_set_inode_flag(inode, EXT4_INODE_ENCRYPT);
- ext4_clear_inode_state(inode,
- EXT4_STATE_MAY_INLINE_DATA);
- /*
- * Update inode->i_flags - S_ENCRYPTED will be enabled,
- * S_DAX may be disabled
- */
- ext4_set_inode_flags(inode, false);
- }
- return res;
- }
-
- res = dquot_initialize(inode);
- if (res)
- return res;
-retry:
- res = ext4_xattr_set_credits(inode, len, false /* is_create */,
- &credits);
- if (res)
- return res;
-
- handle = ext4_journal_start(inode, EXT4_HT_MISC, credits);
- if (IS_ERR(handle))
- return PTR_ERR(handle);
-
- res = ext4_xattr_set_handle(handle, inode, EXT4_XATTR_INDEX_ENCRYPTION,
- EXT4_XATTR_NAME_ENCRYPTION_CONTEXT,
- ctx, len, 0);
- if (!res) {
- ext4_set_inode_flag(inode, EXT4_INODE_ENCRYPT);
- /*
- * Update inode->i_flags - S_ENCRYPTED will be enabled,
- * S_DAX may be disabled
- */
- ext4_set_inode_flags(inode, false);
- res = ext4_mark_inode_dirty(handle, inode);
- if (res)
- EXT4_ERROR_INODE(inode, "Failed to mark inode dirty");
- }
- res2 = ext4_journal_stop(handle);
-
- if (res == -ENOSPC && ext4_should_retry_alloc(inode->i_sb, &retries))
- goto retry;
- if (!res)
- res = res2;
- return res;
-}
-
-static const union fscrypt_policy *ext4_get_dummy_policy(struct super_block *sb)
-{
- return EXT4_SB(sb)->s_dummy_enc_policy.policy;
-}
-
-static bool ext4_has_stable_inodes(struct super_block *sb)
-{
- return ext4_has_feature_stable_inodes(sb);
-}
-
-static void ext4_get_ino_and_lblk_bits(struct super_block *sb,
- int *ino_bits_ret, int *lblk_bits_ret)
-{
- *ino_bits_ret = 8 * sizeof(EXT4_SB(sb)->s_es->s_inodes_count);
- *lblk_bits_ret = 8 * sizeof(ext4_lblk_t);
-}
-
-static const struct fscrypt_operations ext4_cryptops = {
- .key_prefix = "ext4:",
- .get_context = ext4_get_context,
- .set_context = ext4_set_context,
- .get_dummy_policy = ext4_get_dummy_policy,
- .empty_dir = ext4_empty_dir,
- .has_stable_inodes = ext4_has_stable_inodes,
- .get_ino_and_lblk_bits = ext4_get_ino_and_lblk_bits,
-};
-#endif
-
#ifdef CONFIG_QUOTA
static const char * const quotatypes[] = INITQFNAMES;
#define QTYPE2NAME(t) (quotatypes[t])