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Commit 636d5786 authored by Milan Broz's avatar Milan Broz Committed by Alasdair G Kergon
Browse files

dm crypt: tidy labels 



Replace numbers with names in labels in error paths, to avoid confusion
when new one get added between existing ones.

Signed-off-by: default avatarMilan Broz <mbroz@redhat.com>
Signed-off-by: default avatarAlasdair G Kergon <agk@redhat.com>
parent d469f841

drivers/md/dm-crypt.c

+19 −19
Original line number Diff line number Diff line
@@ -771,7 +771,7 @@ static int crypt_ctr(struct dm_target *ti, unsigned int argc, char **argv) 


 	if (crypt_set_key(cc, argv[1])) {

		ti->error = "Error decoding key";

		goto bad1;

		goto bad_cipher;

	}



	/* Compatiblity mode for old dm-crypt cipher strings */
@@ -782,19 +782,19 @@ static int crypt_ctr(struct dm_target *ti, unsigned int argc, char **argv) 


	if (strcmp(chainmode, "ecb") && !ivmode) {

		ti->error = "This chaining mode requires an IV mechanism";

		goto bad1;

		goto bad_cipher;

	}



	if (snprintf(cc->cipher, CRYPTO_MAX_ALG_NAME, "%s(%s)",

		     chainmode, cipher) >= CRYPTO_MAX_ALG_NAME) {

		ti->error = "Chain mode + cipher name is too long";

		goto bad1;

		goto bad_cipher;

	}



	tfm = crypto_alloc_blkcipher(cc->cipher, 0, CRYPTO_ALG_ASYNC);

	if (IS_ERR(tfm)) {

		ti->error = "Error allocating crypto tfm";

		goto bad1;

		goto bad_cipher;

	}



	strcpy(cc->cipher, cipher);
@@ -818,12 +818,12 @@ static int crypt_ctr(struct dm_target *ti, unsigned int argc, char **argv) 
		cc->iv_gen_ops = &crypt_iv_null_ops;

	else {

		ti->error = "Invalid IV mode";

		goto bad2;

		goto bad_ivmode;

	}



	if (cc->iv_gen_ops && cc->iv_gen_ops->ctr &&

	    cc->iv_gen_ops->ctr(cc, ti, ivopts) < 0)

		goto bad2;

		goto bad_ivmode;



	cc->iv_size = crypto_blkcipher_ivsize(tfm);

	if (cc->iv_size)
@@ -842,13 +842,13 @@ static int crypt_ctr(struct dm_target *ti, unsigned int argc, char **argv) 
	cc->io_pool = mempool_create_slab_pool(MIN_IOS, _crypt_io_pool);

	if (!cc->io_pool) {

		ti->error = "Cannot allocate crypt io mempool";

		goto bad3;

		goto bad_slab_pool;

	}



	cc->page_pool = mempool_create_page_pool(MIN_POOL_PAGES, 0);

	if (!cc->page_pool) {

		ti->error = "Cannot allocate page mempool";

		goto bad4;

		goto bad_page_pool;

	}



	cc->bs = bioset_create(MIN_IOS, MIN_IOS);
@@ -859,25 +859,25 @@ static int crypt_ctr(struct dm_target *ti, unsigned int argc, char **argv) 


	if (crypto_blkcipher_setkey(tfm, cc->key, key_size) < 0) {

		ti->error = "Error setting key";

		goto bad5;

		goto bad_device;

	}



	if (sscanf(argv[2], "%llu", &tmpll) != 1) {

		ti->error = "Invalid iv_offset sector";

		goto bad5;

		goto bad_device;

	}

	cc->iv_offset = tmpll;



	if (sscanf(argv[4], "%llu", &tmpll) != 1) {

		ti->error = "Invalid device sector";

		goto bad5;

		goto bad_device;

	}

	cc->start = tmpll;



	if (dm_get_device(ti, argv[3], cc->start, ti->len,

			  dm_table_get_mode(ti->table), &cc->dev)) {

		ti->error = "Device lookup failed";

		goto bad5;

		goto bad_device;

	}



	if (ivmode && cc->iv_gen_ops) {
@@ -886,7 +886,7 @@ static int crypt_ctr(struct dm_target *ti, unsigned int argc, char **argv) 
		cc->iv_mode = kmalloc(strlen(ivmode) + 1, GFP_KERNEL);

		if (!cc->iv_mode) {

			ti->error = "Error kmallocing iv_mode string";

			goto bad_iv_mode;

			goto bad_ivmode_string;

		}

		strcpy(cc->iv_mode, ivmode);

	} else
@@ -911,20 +911,20 @@ static int crypt_ctr(struct dm_target *ti, unsigned int argc, char **argv) 
	destroy_workqueue(cc->io_queue);

bad_io_queue:

	kfree(cc->iv_mode);

bad_iv_mode:

bad_ivmode_string:

	dm_put_device(ti, cc->dev);

bad5:

bad_device:

	bioset_free(cc->bs);

bad_bs:

	mempool_destroy(cc->page_pool);

bad4:

bad_page_pool:

	mempool_destroy(cc->io_pool);

bad3:

bad_slab_pool:

	if (cc->iv_gen_ops && cc->iv_gen_ops->dtr)

		cc->iv_gen_ops->dtr(cc);

bad2:

bad_ivmode:

	crypto_free_blkcipher(tfm);

bad1:

bad_cipher:

	/* Must zero key material before freeing */

	memset(cc, 0, sizeof(*cc) + cc->key_size * sizeof(u8));

	kfree(cc);