42 	struct fsverity_hash_alg *alg;  in fsverity_get_hash_alg()  local
51 	alg = &fsverity_hash_algs[num];  in fsverity_get_hash_alg()
54 	tfm = READ_ONCE(alg->tfm);  in fsverity_get_hash_alg()
56 		return alg;  in fsverity_get_hash_alg()
61 	tfm = crypto_alloc_ahash(alg->name, 0, 0);  in fsverity_get_hash_alg()
66 				      alg->name);  in fsverity_get_hash_alg()
71 			     alg->name, PTR_ERR(tfm));  in fsverity_get_hash_alg()
76 	if (WARN_ON(alg->digest_size != crypto_ahash_digestsize(tfm)))  in fsverity_get_hash_alg()
78 	if (WARN_ON(alg->block_size != crypto_ahash_blocksize(tfm)))  in fsverity_get_hash_alg()
82 		alg->name, crypto_ahash_driver_name(tfm));  in fsverity_get_hash_alg()
85 	if (cmpxchg(&alg->tfm, NULL, tfm) != NULL)  in fsverity_get_hash_alg()
88 	return alg;  in fsverity_get_hash_alg()
104 const u8 *fsverity_prepare_hash_state(const struct fsverity_hash_alg *alg,  in fsverity_prepare_hash_state()  argument
118 	hashstate = kmalloc(crypto_ahash_statesize(alg->tfm), GFP_KERNEL);  in fsverity_prepare_hash_state()
122 	req = ahash_request_alloc(alg->tfm, GFP_KERNEL);  in fsverity_prepare_hash_state()
135 	padded_salt_size = round_up(salt_size, alg->block_size);  in fsverity_prepare_hash_state()
232 int fsverity_hash_buffer(const struct fsverity_hash_alg *alg,  in fsverity_hash_buffer()  argument
240 	req = ahash_request_alloc(alg->tfm, GFP_KERNEL);  in fsverity_hash_buffer()
265 		const struct fsverity_hash_alg *alg = &fsverity_hash_algs[i];  in fsverity_check_hash_algs()  local
267 		if (!alg->name)  in fsverity_check_hash_algs()
270 		BUG_ON(alg->digest_size > FS_VERITY_MAX_DIGEST_SIZE);  in fsverity_check_hash_algs()
277 		BUG_ON(!is_power_of_2(alg->digest_size));  in fsverity_check_hash_algs()
278 		BUG_ON(!is_power_of_2(alg->block_size));  in fsverity_check_hash_algs()