diff options
| author | Eric Biggers <ebiggers@google.com> | 2020-02-25 20:59:15 -0800 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2020-03-06 12:28:22 +1100 |
| commit | b8c0d74a70273cea5724073370fb8ffec9783d20 (patch) | |
| tree | 8746423ed47cf756795084b1df85c69c34232a9f /crypto | |
| parent | 64d66793b76cd3db39137cf9fc7ebe9c2010931d (diff) | |
| download | lwn-b8c0d74a70273cea5724073370fb8ffec9783d20.tar.gz lwn-b8c0d74a70273cea5724073370fb8ffec9783d20.zip | |
crypto: cryptd - simplify error handling in cryptd_create_*()
Simplify the error handling in the various cryptd_create_*() functions
by taking advantage of crypto_grab_*() now handling an ERR_PTR() name
and by taking advantage of crypto_drop_*() now accepting (as a no-op) a
spawn that hasn't been grabbed yet.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto')
| -rw-r--r-- | crypto/cryptd.c | 37 |
1 files changed, 11 insertions, 26 deletions
diff --git a/crypto/cryptd.c b/crypto/cryptd.c index d94c75c840a5..283212262adb 100644 --- a/crypto/cryptd.c +++ b/crypto/cryptd.c @@ -369,7 +369,6 @@ static int cryptd_create_skcipher(struct crypto_template *tmpl, struct skcipherd_instance_ctx *ctx; struct skcipher_instance *inst; struct skcipher_alg *alg; - const char *name; u32 type; u32 mask; int err; @@ -379,10 +378,6 @@ static int cryptd_create_skcipher(struct crypto_template *tmpl, cryptd_check_internal(tb, &type, &mask); - name = crypto_attr_alg_name(tb[1]); - if (IS_ERR(name)) - return PTR_ERR(name); - inst = kzalloc(sizeof(*inst) + sizeof(*ctx), GFP_KERNEL); if (!inst) return -ENOMEM; @@ -391,14 +386,14 @@ static int cryptd_create_skcipher(struct crypto_template *tmpl, ctx->queue = queue; err = crypto_grab_skcipher(&ctx->spawn, skcipher_crypto_instance(inst), - name, type, mask); + crypto_attr_alg_name(tb[1]), type, mask); if (err) - goto out_free_inst; + goto err_free_inst; alg = crypto_spawn_skcipher_alg(&ctx->spawn); err = cryptd_init_instance(skcipher_crypto_instance(inst), &alg->base); if (err) - goto out_drop_skcipher; + goto err_free_inst; inst->alg.base.cra_flags = CRYPTO_ALG_ASYNC | (alg->base.cra_flags & CRYPTO_ALG_INTERNAL); @@ -421,10 +416,8 @@ static int cryptd_create_skcipher(struct crypto_template *tmpl, err = skcipher_register_instance(tmpl, inst); if (err) { -out_drop_skcipher: - crypto_drop_skcipher(&ctx->spawn); -out_free_inst: - kfree(inst); +err_free_inst: + cryptd_skcipher_free(inst); } return err; } @@ -694,8 +687,7 @@ static int cryptd_create_hash(struct crypto_template *tmpl, struct rtattr **tb, err = ahash_register_instance(tmpl, inst); if (err) { err_free_inst: - crypto_drop_shash(&ctx->spawn); - kfree(inst); + cryptd_hash_free(inst); } return err; } @@ -833,17 +825,12 @@ static int cryptd_create_aead(struct crypto_template *tmpl, struct aead_instance_ctx *ctx; struct aead_instance *inst; struct aead_alg *alg; - const char *name; u32 type = 0; u32 mask = CRYPTO_ALG_ASYNC; int err; cryptd_check_internal(tb, &type, &mask); - name = crypto_attr_alg_name(tb[1]); - if (IS_ERR(name)) - return PTR_ERR(name); - inst = kzalloc(sizeof(*inst) + sizeof(*ctx), GFP_KERNEL); if (!inst) return -ENOMEM; @@ -852,14 +839,14 @@ static int cryptd_create_aead(struct crypto_template *tmpl, ctx->queue = queue; err = crypto_grab_aead(&ctx->aead_spawn, aead_crypto_instance(inst), - name, type, mask); + crypto_attr_alg_name(tb[1]), type, mask); if (err) - goto out_free_inst; + goto err_free_inst; alg = crypto_spawn_aead_alg(&ctx->aead_spawn); err = cryptd_init_instance(aead_crypto_instance(inst), &alg->base); if (err) - goto out_drop_aead; + goto err_free_inst; inst->alg.base.cra_flags = CRYPTO_ALG_ASYNC | (alg->base.cra_flags & CRYPTO_ALG_INTERNAL); @@ -879,10 +866,8 @@ static int cryptd_create_aead(struct crypto_template *tmpl, err = aead_register_instance(tmpl, inst); if (err) { -out_drop_aead: - crypto_drop_aead(&ctx->aead_spawn); -out_free_inst: - kfree(inst); +err_free_inst: + cryptd_aead_free(inst); } return err; } |