diff options
Diffstat (limited to 'crypto/rng.c')
| -rw-r--r-- | crypto/rng.c | 23 |
1 files changed, 17 insertions, 6 deletions
diff --git a/crypto/rng.c b/crypto/rng.c index c6165c8eb387..1d4b9177bad4 100644 --- a/crypto/rng.c +++ b/crypto/rng.c @@ -24,8 +24,7 @@ #include "internal.h" static DEFINE_MUTEX(crypto_default_rng_lock); -struct crypto_rng *crypto_default_rng; -EXPORT_SYMBOL_GPL(crypto_default_rng); +static struct crypto_rng *crypto_default_rng; static int crypto_default_rng_refcnt; int crypto_rng_reset(struct crypto_rng *tfm, const u8 *seed, unsigned int slen) @@ -106,7 +105,7 @@ struct crypto_rng *crypto_alloc_rng(const char *alg_name, u32 type, u32 mask) } EXPORT_SYMBOL_GPL(crypto_alloc_rng); -int crypto_get_default_rng(void) +static int crypto_get_default_rng(void) { struct crypto_rng *rng; int err; @@ -135,15 +134,27 @@ unlock: return err; } -EXPORT_SYMBOL_GPL(crypto_get_default_rng); -void crypto_put_default_rng(void) +static void crypto_put_default_rng(void) { mutex_lock(&crypto_default_rng_lock); crypto_default_rng_refcnt--; mutex_unlock(&crypto_default_rng_lock); } -EXPORT_SYMBOL_GPL(crypto_put_default_rng); + +int __crypto_stdrng_get_bytes(void *buf, unsigned int len) +{ + int err; + + err = crypto_get_default_rng(); + if (err) + return err; + + err = crypto_rng_get_bytes(crypto_default_rng, buf, len); + crypto_put_default_rng(); + return err; +} +EXPORT_SYMBOL_GPL(__crypto_stdrng_get_bytes); #if defined(CONFIG_CRYPTO_RNG) || defined(CONFIG_CRYPTO_RNG_MODULE) int crypto_del_default_rng(void) |