From 244b2c5ca8b14627e4a17755e5922221e121c771 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Wed, 09 Oct 2024 06:15:07 +0000
Subject: [PATCH] change system file
---
kernel/crypto/ahash.c | 167 +++++++++++++++++++++++++------------------------------
1 files changed, 77 insertions(+), 90 deletions(-)
diff --git a/kernel/crypto/ahash.c b/kernel/crypto/ahash.c
index 158e716..c2ca631 100644
--- a/kernel/crypto/ahash.c
+++ b/kernel/crypto/ahash.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Asynchronous Cryptographic Hash operations.
*
@@ -5,17 +6,10 @@
* completion via a callback.
*
* Copyright (c) 2008 Loc Ho <lho@amcc.com>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the Free
- * Software Foundation; either version 2 of the License, or (at your option)
- * any later version.
- *
*/
#include <crypto/internal/hash.h>
#include <crypto/scatterwalk.h>
-#include <linux/bug.h>
#include <linux/err.h>
#include <linux/kernel.h>
#include <linux/module.h>
@@ -27,6 +21,8 @@
#include <net/netlink.h>
#include "internal.h"
+
+static const struct crypto_type crypto_ahash_type;
struct ahash_request_priv {
crypto_completion_t complete;
@@ -49,10 +45,7 @@
unsigned int nbytes = min(walk->entrylen,
((unsigned int)(PAGE_SIZE)) - offset);
- if (walk->flags & CRYPTO_ALG_ASYNC)
- walk->data = kmap(walk->pg);
- else
- walk->data = kmap_atomic(walk->pg);
+ walk->data = kmap_atomic(walk->pg);
walk->data += offset;
if (offset & alignmask) {
@@ -102,16 +95,8 @@
}
}
- if (walk->flags & CRYPTO_ALG_ASYNC)
- kunmap(walk->pg);
- else {
- kunmap_atomic(walk->data);
- /*
- * The may sleep test only makes sense for sync users.
- * Async users don't need to sleep here anyway.
- */
- crypto_yield(walk->flags);
- }
+ kunmap_atomic(walk->data);
+ crypto_yield(walk->flags);
if (err)
return err;
@@ -143,32 +128,11 @@
walk->alignmask = crypto_ahash_alignmask(crypto_ahash_reqtfm(req));
walk->sg = req->src;
- walk->flags = req->base.flags & CRYPTO_TFM_REQ_MASK;
+ walk->flags = req->base.flags;
return hash_walk_new_entry(walk);
}
EXPORT_SYMBOL_GPL(crypto_hash_walk_first);
-
-int crypto_ahash_walk_first(struct ahash_request *req,
- struct crypto_hash_walk *walk)
-{
- walk->total = req->nbytes;
-
- if (!walk->total) {
- walk->entrylen = 0;
- return 0;
- }
-
- walk->alignmask = crypto_ahash_alignmask(crypto_ahash_reqtfm(req));
- walk->sg = req->src;
- walk->flags = req->base.flags & CRYPTO_TFM_REQ_MASK;
- walk->flags |= CRYPTO_ALG_ASYNC;
-
- BUILD_BUG_ON(CRYPTO_TFM_REQ_MASK & CRYPTO_ALG_ASYNC);
-
- return hash_walk_new_entry(walk);
-}
-EXPORT_SYMBOL_GPL(crypto_ahash_walk_first);
static int ahash_setkey_unaligned(struct crypto_ahash *tfm, const u8 *key,
unsigned int keylen)
@@ -186,7 +150,7 @@
alignbuffer = (u8 *)ALIGN((unsigned long)buffer, alignmask + 1);
memcpy(alignbuffer, key, keylen);
ret = tfm->setkey(tfm, alignbuffer, keylen);
- kzfree(buffer);
+ kfree_sensitive(buffer);
return ret;
}
@@ -305,7 +269,7 @@
req->priv = NULL;
/* Free the req->priv.priv from the ADJUSTED request. */
- kzfree(priv);
+ kfree_sensitive(priv);
}
static void ahash_notify_einprogress(struct ahash_request *req)
@@ -375,24 +339,46 @@
int crypto_ahash_final(struct ahash_request *req)
{
- return crypto_ahash_op(req, crypto_ahash_reqtfm(req)->final);
+ struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
+ struct crypto_alg *alg = tfm->base.__crt_alg;
+ unsigned int nbytes = req->nbytes;
+ int ret;
+
+ crypto_stats_get(alg);
+ ret = crypto_ahash_op(req, crypto_ahash_reqtfm(req)->final);
+ crypto_stats_ahash_final(nbytes, ret, alg);
+ return ret;
}
EXPORT_SYMBOL_GPL(crypto_ahash_final);
int crypto_ahash_finup(struct ahash_request *req)
{
- return crypto_ahash_op(req, crypto_ahash_reqtfm(req)->finup);
+ struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
+ struct crypto_alg *alg = tfm->base.__crt_alg;
+ unsigned int nbytes = req->nbytes;
+ int ret;
+
+ crypto_stats_get(alg);
+ ret = crypto_ahash_op(req, crypto_ahash_reqtfm(req)->finup);
+ crypto_stats_ahash_final(nbytes, ret, alg);
+ return ret;
}
EXPORT_SYMBOL_GPL(crypto_ahash_finup);
int crypto_ahash_digest(struct ahash_request *req)
{
struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
+ struct crypto_alg *alg = tfm->base.__crt_alg;
+ unsigned int nbytes = req->nbytes;
+ int ret;
+ crypto_stats_get(alg);
if (crypto_ahash_get_flags(tfm) & CRYPTO_TFM_NEED_KEY)
- return -ENOKEY;
-
- return crypto_ahash_op(req, tfm->digest);
+ ret = -ENOKEY;
+ else
+ ret = crypto_ahash_op(req, tfm->digest);
+ crypto_stats_ahash_final(nbytes, ret, alg);
+ return ret;
}
EXPORT_SYMBOL_GPL(crypto_ahash_digest);
@@ -458,6 +444,14 @@
return ahash_def_finup_finish1(req, err);
}
+static void crypto_ahash_exit_tfm(struct crypto_tfm *tfm)
+{
+ struct crypto_ahash *hash = __crypto_ahash_cast(tfm);
+ struct ahash_alg *alg = crypto_ahash_alg(hash);
+
+ alg->exit_tfm(hash);
+}
+
static int crypto_ahash_init_tfm(struct crypto_tfm *tfm)
{
struct crypto_ahash *hash = __crypto_ahash_cast(tfm);
@@ -481,7 +475,10 @@
ahash_set_needkey(hash);
}
- return 0;
+ if (alg->exit_tfm)
+ tfm->exit = crypto_ahash_exit_tfm;
+
+ return alg->init_tfm ? alg->init_tfm(hash) : 0;
}
static unsigned int crypto_ahash_extsize(struct crypto_alg *alg)
@@ -492,23 +489,26 @@
return crypto_alg_extsize(alg);
}
+static void crypto_ahash_free_instance(struct crypto_instance *inst)
+{
+ struct ahash_instance *ahash = ahash_instance(inst);
+
+ ahash->free(ahash);
+}
+
#ifdef CONFIG_NET
static int crypto_ahash_report(struct sk_buff *skb, struct crypto_alg *alg)
{
struct crypto_report_hash rhash;
- strncpy(rhash.type, "ahash", sizeof(rhash.type));
+ memset(&rhash, 0, sizeof(rhash));
+
+ strscpy(rhash.type, "ahash", sizeof(rhash.type));
rhash.blocksize = alg->cra_blocksize;
rhash.digestsize = __crypto_hash_alg_common(alg)->digestsize;
- if (nla_put(skb, CRYPTOCFGA_REPORT_HASH,
- sizeof(struct crypto_report_hash), &rhash))
- goto nla_put_failure;
- return 0;
-
-nla_put_failure:
- return -EMSGSIZE;
+ return nla_put(skb, CRYPTOCFGA_REPORT_HASH, sizeof(rhash), &rhash);
}
#else
static int crypto_ahash_report(struct sk_buff *skb, struct crypto_alg *alg)
@@ -529,9 +529,10 @@
__crypto_hash_alg_common(alg)->digestsize);
}
-const struct crypto_type crypto_ahash_type = {
+static const struct crypto_type crypto_ahash_type = {
.extsize = crypto_ahash_extsize,
.init_tfm = crypto_ahash_init_tfm,
+ .free = crypto_ahash_free_instance,
#ifdef CONFIG_PROC_FS
.show = crypto_ahash_show,
#endif
@@ -541,7 +542,15 @@
.type = CRYPTO_ALG_TYPE_AHASH,
.tfmsize = offsetof(struct crypto_ahash, base),
};
-EXPORT_SYMBOL_GPL(crypto_ahash_type);
+
+int crypto_grab_ahash(struct crypto_ahash_spawn *spawn,
+ struct crypto_instance *inst,
+ const char *name, u32 type, u32 mask)
+{
+ spawn->base.frontend = &crypto_ahash_type;
+ return crypto_grab_spawn(&spawn->base, inst, name, type, mask);
+}
+EXPORT_SYMBOL_GPL(crypto_grab_ahash);
struct crypto_ahash *crypto_alloc_ahash(const char *alg_name, u32 type,
u32 mask)
@@ -560,8 +569,8 @@
{
struct crypto_alg *base = &alg->halg.base;
- if (alg->halg.digestsize > PAGE_SIZE / 8 ||
- alg->halg.statesize > PAGE_SIZE / 8 ||
+ if (alg->halg.digestsize > HASH_MAX_DIGESTSIZE ||
+ alg->halg.statesize > HASH_MAX_STATESIZE ||
alg->halg.statesize == 0)
return -EINVAL;
@@ -585,9 +594,9 @@
}
EXPORT_SYMBOL_GPL(crypto_register_ahash);
-int crypto_unregister_ahash(struct ahash_alg *alg)
+void crypto_unregister_ahash(struct ahash_alg *alg)
{
- return crypto_unregister_alg(&alg->halg.base);
+ crypto_unregister_alg(&alg->halg.base);
}
EXPORT_SYMBOL_GPL(crypto_unregister_ahash);
@@ -625,6 +634,9 @@
{
int err;
+ if (WARN_ON(!inst->free))
+ return -EINVAL;
+
err = ahash_prepare_alg(&inst->alg);
if (err)
return err;
@@ -632,31 +644,6 @@
return crypto_register_instance(tmpl, ahash_crypto_instance(inst));
}
EXPORT_SYMBOL_GPL(ahash_register_instance);
-
-void ahash_free_instance(struct crypto_instance *inst)
-{
- crypto_drop_spawn(crypto_instance_ctx(inst));
- kfree(ahash_instance(inst));
-}
-EXPORT_SYMBOL_GPL(ahash_free_instance);
-
-int crypto_init_ahash_spawn(struct crypto_ahash_spawn *spawn,
- struct hash_alg_common *alg,
- struct crypto_instance *inst)
-{
- return crypto_init_spawn2(&spawn->base, &alg->base, inst,
- &crypto_ahash_type);
-}
-EXPORT_SYMBOL_GPL(crypto_init_ahash_spawn);
-
-struct hash_alg_common *ahash_attr_alg(struct rtattr *rta, u32 type, u32 mask)
-{
- struct crypto_alg *alg;
-
- alg = crypto_attr_alg2(rta, &crypto_ahash_type, type, mask);
- return IS_ERR(alg) ? ERR_CAST(alg) : __crypto_hash_alg_common(alg);
-}
-EXPORT_SYMBOL_GPL(ahash_attr_alg);
bool crypto_hash_alg_has_setkey(struct hash_alg_common *halg)
{
--
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