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Commit 66aa3e12 authored by Jaegeuk Kim's avatar Jaegeuk Kim
Browse files

f2fs crypto: replace some BUG_ON()'s with error checks 



This patch adopts:
	ext4 crypto: replace some BUG_ON()'s with error checks

Signed-off-by: default avatarTheodore Ts'o <tytso@mit.edu>
Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
parent 8ef2af45

fs/f2fs/crypto.c

+0 −1
Original line number Diff line number Diff line
@@ -362,7 +362,6 @@ static int f2fs_page_crypto(struct f2fs_crypto_ctx *ctx, 
	else

		res = crypto_ablkcipher_encrypt(req);

	if (res == -EINPROGRESS || res == -EBUSY) {

		BUG_ON(req->base.data != &ecr);

		wait_for_completion(&ecr.completion);

		res = ecr.res;

	}

fs/f2fs/crypto_fname.c

+0 −2
Original line number Diff line number Diff line
@@ -124,7 +124,6 @@ static int f2fs_fname_encrypt(struct inode *inode, 
	ablkcipher_request_set_crypt(req, &src_sg, &dst_sg, ciphertext_len, iv);

	res = crypto_ablkcipher_encrypt(req);

	if (res == -EINPROGRESS || res == -EBUSY) {

		BUG_ON(req->base.data != &ecr);

		wait_for_completion(&ecr.completion);

		res = ecr.res;

	}
@@ -180,7 +179,6 @@ static int f2fs_fname_decrypt(struct inode *inode, 
	ablkcipher_request_set_crypt(req, &src_sg, &dst_sg, iname->len, iv);

	res = crypto_ablkcipher_decrypt(req);

	if (res == -EINPROGRESS || res == -EBUSY) {

		BUG_ON(req->base.data != &ecr);

		wait_for_completion(&ecr.completion);

		res = ecr.res;

	}

fs/f2fs/crypto_key.c

+12 −3
Original line number Diff line number Diff line
@@ -75,7 +75,6 @@ static int f2fs_derive_key_aes(char deriving_key[F2FS_AES_128_ECB_KEY_SIZE], 
					F2FS_AES_256_XTS_KEY_SIZE, NULL);

	res = crypto_ablkcipher_encrypt(req);

	if (res == -EINPROGRESS || res == -EBUSY) {

		BUG_ON(req->base.data != &ecr);

		wait_for_completion(&ecr.completion);

		res = ecr.res;

	}
@@ -198,7 +197,11 @@ int _f2fs_get_encryption_info(struct inode *inode) 
		goto out;

	}

	crypt_info->ci_keyring_key = keyring_key;

	BUG_ON(keyring_key->type != &key_type_logon);

	if (keyring_key->type != &key_type_logon) {

		printk_once(KERN_WARNING "f2fs: key type must be logon\n");

		res = -ENOKEY;

		goto out;

	}

	ukp = user_key_payload(keyring_key);

	if (ukp->datalen != sizeof(struct f2fs_encryption_key)) {

		res = -EINVAL;
@@ -207,7 +210,13 @@ int _f2fs_get_encryption_info(struct inode *inode) 
	master_key = (struct f2fs_encryption_key *)ukp->data;

	BUILD_BUG_ON(F2FS_AES_128_ECB_KEY_SIZE !=

				F2FS_KEY_DERIVATION_NONCE_SIZE);

	BUG_ON(master_key->size != F2FS_AES_256_XTS_KEY_SIZE);

	if (master_key->size != F2FS_AES_256_XTS_KEY_SIZE) {

		printk_once(KERN_WARNING

				"f2fs: key size incorrect: %d\n",

				master_key->size);

		res = -ENOKEY;

		goto out;

	}

	res = f2fs_derive_key_aes(ctx.nonce, master_key->raw,

				  raw_key);

	if (res)