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crypto: rng - Unexport "default RNG" symbols

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Now that crypto_default_rng, crypto_get_default_rng(), and
crypto_put_default_rng() have no users outside crypto/rng.c itself,
unexport them and make them static.

Signed-off-by: Eric Biggers <ebiggers@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Eric Biggers 2026-03-25 17:15:04 -07:00 committed by Herbert Xu
parent 117c3c4df2
commit bdd2cc93bf
2 changed files with 3 additions and 11 deletions
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9
crypto/rng.c
View File

@ -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 +134,13 @@ int crypto_get_default_rng(void)
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)
{

5
include/crypto/rng.h
View File

@ -57,11 +57,6 @@ struct crypto_rng {
struct crypto_tfm base;
};
extern struct crypto_rng *crypto_default_rng;
int crypto_get_default_rng(void);
void crypto_put_default_rng(void);
/**
* crypto_stdrng_get_bytes() - get cryptographically secure random bytes
* @buf: output buffer holding the random numbers