diff options
| -rw-r--r-- | crypto/algapi.c | 42 | ||||
| -rw-r--r-- | crypto/cbc.c | 11 | ||||
| -rw-r--r-- | crypto/cryptomgr.c | 28 | ||||
| -rw-r--r-- | crypto/ecb.c | 11 | ||||
| -rw-r--r-- | crypto/hmac.c | 11 | ||||
| -rw-r--r-- | crypto/lrw.c | 11 | ||||
| -rw-r--r-- | crypto/pcbc.c | 11 | ||||
| -rw-r--r-- | crypto/xcbc.c | 12 | ||||
| -rw-r--r-- | include/crypto/algapi.h | 8 | ||||
| -rw-r--r-- | include/linux/crypto.h | 9 |
10 files changed, 117 insertions, 37 deletions
diff --git a/crypto/algapi.c b/crypto/algapi.c index f7d2185..491205e 100644 --- a/crypto/algapi.c +++ b/crypto/algapi.c @@ -425,15 +425,45 @@ int crypto_unregister_notifier(struct notifier_block *nb) } EXPORT_SYMBOL_GPL(crypto_unregister_notifier); -struct crypto_alg *crypto_get_attr_alg(void *param, unsigned int len, - u32 type, u32 mask) +struct crypto_attr_type *crypto_get_attr_type(struct rtattr **tb) { - struct rtattr *rta = param; + struct rtattr *rta = tb[CRYPTOA_TYPE - 1]; + struct crypto_attr_type *algt; + + if (!rta) + return ERR_PTR(-ENOENT); + if (RTA_PAYLOAD(rta) < sizeof(*algt)) + return ERR_PTR(-EINVAL); + + algt = RTA_DATA(rta); + + return algt; +} +EXPORT_SYMBOL_GPL(crypto_get_attr_type); + +int crypto_check_attr_type(struct rtattr **tb, u32 type) +{ + struct crypto_attr_type *algt; + + algt = crypto_get_attr_type(tb); + if (IS_ERR(algt)) + return PTR_ERR(algt); + + if ((algt->type ^ type) & algt->mask) + return -EINVAL; + + return 0; +} +EXPORT_SYMBOL_GPL(crypto_check_attr_type); + +struct crypto_alg *crypto_get_attr_alg(struct rtattr **tb, u32 type, u32 mask) +{ + struct rtattr *rta = tb[CRYPTOA_ALG - 1]; struct crypto_attr_alg *alga; - if (!RTA_OK(rta, len)) - return ERR_PTR(-EBADR); - if (rta->rta_type != CRYPTOA_ALG || RTA_PAYLOAD(rta) < sizeof(*alga)) + if (!rta) + return ERR_PTR(-ENOENT); + if (RTA_PAYLOAD(rta) < sizeof(*alga)) return ERR_PTR(-EINVAL); alga = RTA_DATA(rta); diff --git a/crypto/cbc.c b/crypto/cbc.c index 136fea7..1f2649e 100644 --- a/crypto/cbc.c +++ b/crypto/cbc.c @@ -275,13 +275,18 @@ static void crypto_cbc_exit_tfm(struct crypto_tfm *tfm) crypto_free_cipher(ctx->child); } -static struct crypto_instance *crypto_cbc_alloc(void *param, unsigned int len) +static struct crypto_instance *crypto_cbc_alloc(struct rtattr **tb) { struct crypto_instance *inst; struct crypto_alg *alg; + int err; + + err = crypto_check_attr_type(tb, CRYPTO_ALG_TYPE_BLKCIPHER); + if (err) + return ERR_PTR(err); - alg = crypto_get_attr_alg(param, len, CRYPTO_ALG_TYPE_CIPHER, - CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_ASYNC); + alg = crypto_get_attr_alg(tb, CRYPTO_ALG_TYPE_CIPHER, + CRYPTO_ALG_TYPE_MASK); if (IS_ERR(alg)) return ERR_PTR(PTR_ERR(alg)); diff --git a/crypto/cryptomgr.c b/crypto/cryptomgr.c index 2ebffb8..7a3df9b 100644 --- a/crypto/cryptomgr.c +++ b/crypto/cryptomgr.c @@ -26,14 +26,19 @@ struct cryptomgr_param { struct work_struct work; + struct rtattr *tb[CRYPTOA_MAX]; + + struct { + struct rtattr attr; + struct crypto_attr_type data; + } type; + struct { struct rtattr attr; struct crypto_attr_alg data; } alg; struct { - u32 type; - u32 mask; char name[CRYPTO_MAX_ALG_NAME]; } larval; @@ -53,7 +58,7 @@ static void cryptomgr_probe(struct work_struct *work) goto err; do { - inst = tmpl->alloc(¶m->alg, sizeof(param->alg)); + inst = tmpl->alloc(param->tb); if (IS_ERR(inst)) err = PTR_ERR(inst); else if ((err = crypto_register_instance(tmpl, inst))) @@ -70,8 +75,8 @@ out: return; err: - crypto_larval_error(param->larval.name, param->larval.type, - param->larval.mask); + crypto_larval_error(param->larval.name, param->type.data.type, + param->type.data.mask); goto out; } @@ -82,7 +87,7 @@ static int cryptomgr_schedule_probe(struct crypto_larval *larval) const char *p; unsigned int len; - param = kmalloc(sizeof(*param), GFP_KERNEL); + param = kzalloc(sizeof(*param), GFP_KERNEL); if (!param) goto err; @@ -94,7 +99,6 @@ static int cryptomgr_schedule_probe(struct crypto_larval *larval) goto err_free_param; memcpy(param->template, name, len); - param->template[len] = 0; name = p + 1; for (p = name; isalnum(*p) || *p == '-' || *p == '_'; p++) @@ -104,14 +108,18 @@ static int cryptomgr_schedule_probe(struct crypto_larval *larval) if (!len || *p != ')' || p[1]) goto err_free_param; + param->type.attr.rta_len = sizeof(param->type); + param->type.attr.rta_type = CRYPTOA_TYPE; + param->type.data.type = larval->alg.cra_flags; + param->type.data.mask = larval->mask; + param->tb[CRYPTOA_TYPE - 1] = ¶m->type.attr; + param->alg.attr.rta_len = sizeof(param->alg); param->alg.attr.rta_type = CRYPTOA_ALG; memcpy(param->alg.data.name, name, len); - param->alg.data.name[len] = 0; + param->tb[CRYPTOA_ALG - 1] = ¶m->alg.attr; memcpy(param->larval.name, larval->alg.cra_name, CRYPTO_MAX_ALG_NAME); - param->larval.type = larval->alg.cra_flags; - param->larval.mask = larval->mask; INIT_WORK(¶m->work, cryptomgr_probe); schedule_work(¶m->work); diff --git a/crypto/ecb.c b/crypto/ecb.c index 839a0ae..6310387 100644 --- a/crypto/ecb.c +++ b/crypto/ecb.c @@ -115,13 +115,18 @@ static void crypto_ecb_exit_tfm(struct crypto_tfm *tfm) crypto_free_cipher(ctx->child); } -static struct crypto_instance *crypto_ecb_alloc(void *param, unsigned int len) +static struct crypto_instance *crypto_ecb_alloc(struct rtattr **tb) { struct crypto_instance *inst; struct crypto_alg *alg; + int err; + + err = crypto_check_attr_type(tb, CRYPTO_ALG_TYPE_BLKCIPHER); + if (err) + return ERR_PTR(err); - alg = crypto_get_attr_alg(param, len, CRYPTO_ALG_TYPE_CIPHER, - CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_ASYNC); + alg = crypto_get_attr_alg(tb, CRYPTO_ALG_TYPE_CIPHER, + CRYPTO_ALG_TYPE_MASK); if (IS_ERR(alg)) return ERR_PTR(PTR_ERR(alg)); diff --git a/crypto/hmac.c b/crypto/hmac.c index 44187c5..8802fb6 100644 --- a/crypto/hmac.c +++ b/crypto/hmac.c @@ -197,13 +197,18 @@ static void hmac_free(struct crypto_instance *inst) kfree(inst); } -static struct crypto_instance *hmac_alloc(void *param, unsigned int len) +static struct crypto_instance *hmac_alloc(struct rtattr **tb) { struct crypto_instance *inst; struct crypto_alg *alg; + int err; + + err = crypto_check_attr_type(tb, CRYPTO_ALG_TYPE_HASH); + if (err) + return ERR_PTR(err); - alg = crypto_get_attr_alg(param, len, CRYPTO_ALG_TYPE_HASH, - CRYPTO_ALG_TYPE_HASH_MASK | CRYPTO_ALG_ASYNC); + alg = crypto_get_attr_alg(tb, CRYPTO_ALG_TYPE_HASH, + CRYPTO_ALG_TYPE_HASH_MASK); if (IS_ERR(alg)) return ERR_PTR(PTR_ERR(alg)); diff --git a/crypto/lrw.c b/crypto/lrw.c index b410508..621095d 100644 --- a/crypto/lrw.c +++ b/crypto/lrw.c @@ -228,13 +228,18 @@ static void exit_tfm(struct crypto_tfm *tfm) crypto_free_cipher(ctx->child); } -static struct crypto_instance *alloc(void *param, unsigned int len) +static struct crypto_instance *alloc(struct rtattr **tb) { struct crypto_instance *inst; struct crypto_alg *alg; + int err; + + err = crypto_check_attr_type(tb, CRYPTO_ALG_TYPE_BLKCIPHER); + if (err) + return ERR_PTR(err); - alg = crypto_get_attr_alg(param, len, CRYPTO_ALG_TYPE_CIPHER, - CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_ASYNC); + alg = crypto_get_attr_alg(tb, CRYPTO_ALG_TYPE_CIPHER, + CRYPTO_ALG_TYPE_MASK); if (IS_ERR(alg)) return ERR_PTR(PTR_ERR(alg)); diff --git a/crypto/pcbc.c b/crypto/pcbc.c index 5174d7f..c3ed8a1 100644 --- a/crypto/pcbc.c +++ b/crypto/pcbc.c @@ -279,13 +279,18 @@ static void crypto_pcbc_exit_tfm(struct crypto_tfm *tfm) crypto_free_cipher(ctx->child); } -static struct crypto_instance *crypto_pcbc_alloc(void *param, unsigned int len) +static struct crypto_instance *crypto_pcbc_alloc(struct rtattr **tb) { struct crypto_instance *inst; struct crypto_alg *alg; + int err; + + err = crypto_check_attr_type(tb, CRYPTO_ALG_TYPE_BLKCIPHER); + if (err) + return ERR_PTR(err); - alg = crypto_get_attr_alg(param, len, CRYPTO_ALG_TYPE_CIPHER, - CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_ASYNC); + alg = crypto_get_attr_alg(tb, CRYPTO_ALG_TYPE_CIPHER, + CRYPTO_ALG_TYPE_MASK); if (IS_ERR(alg)) return ERR_PTR(PTR_ERR(alg)); diff --git a/crypto/xcbc.c b/crypto/xcbc.c index 53e8ccb..9f502b8 100644 --- a/crypto/xcbc.c +++ b/crypto/xcbc.c @@ -288,12 +288,18 @@ static void xcbc_exit_tfm(struct crypto_tfm *tfm) crypto_free_cipher(ctx->child); } -static struct crypto_instance *xcbc_alloc(void *param, unsigned int len) +static struct crypto_instance *xcbc_alloc(struct rtattr **tb) { struct crypto_instance *inst; struct crypto_alg *alg; - alg = crypto_get_attr_alg(param, len, CRYPTO_ALG_TYPE_CIPHER, - CRYPTO_ALG_TYPE_HASH_MASK | CRYPTO_ALG_ASYNC); + int err; + + err = crypto_check_attr_type(tb, CRYPTO_ALG_TYPE_HASH); + if (err) + return ERR_PTR(err); + + alg = crypto_get_attr_alg(tb, CRYPTO_ALG_TYPE_CIPHER, + CRYPTO_ALG_TYPE_MASK); if (IS_ERR(alg)) return ERR_PTR(PTR_ERR(alg)); diff --git a/include/crypto/algapi.h b/include/crypto/algapi.h index 4e05e93..d0c190b 100644 --- a/include/crypto/algapi.h +++ b/include/crypto/algapi.h @@ -15,6 +15,7 @@ #include <linux/crypto.h> struct module; +struct rtattr; struct seq_file; struct crypto_type { @@ -38,7 +39,7 @@ struct crypto_template { struct hlist_head instances; struct module *module; - struct crypto_instance *(*alloc)(void *param, unsigned int len); + struct crypto_instance *(*alloc)(struct rtattr **tb); void (*free)(struct crypto_instance *inst); char name[CRYPTO_MAX_ALG_NAME]; @@ -96,8 +97,9 @@ void crypto_drop_spawn(struct crypto_spawn *spawn); struct crypto_tfm *crypto_spawn_tfm(struct crypto_spawn *spawn, u32 type, u32 mask); -struct crypto_alg *crypto_get_attr_alg(void *param, unsigned int len, - u32 type, u32 mask); +struct crypto_attr_type *crypto_get_attr_type(struct rtattr **tb); +int crypto_check_attr_type(struct rtattr **tb, u32 type); +struct crypto_alg *crypto_get_attr_alg(struct rtattr **tb, u32 type, u32 mask); struct crypto_instance *crypto_alloc_instance(const char *name, struct crypto_alg *alg); diff --git a/include/linux/crypto.h b/include/linux/crypto.h index d4d0531..67830e7 100644 --- a/include/linux/crypto.h +++ b/include/linux/crypto.h @@ -372,12 +372,21 @@ struct crypto_hash { enum { CRYPTOA_UNSPEC, CRYPTOA_ALG, + CRYPTOA_TYPE, + __CRYPTOA_MAX, }; +#define CRYPTOA_MAX (__CRYPTOA_MAX - 1) + struct crypto_attr_alg { char name[CRYPTO_MAX_ALG_NAME]; }; +struct crypto_attr_type { + u32 type; + u32 mask; +}; + /* * Transform user interface. */ |
