Update Linux to v5.4.2
Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/crypto/af_alg.c b/crypto/af_alg.c
index 17eb09d..879cf23 100644
--- a/crypto/af_alg.c
+++ b/crypto/af_alg.c
@@ -1,15 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* af_alg: User-space algorithm interface
*
* This file provides the user-space API for algorithms.
*
* Copyright (c) 2010 Herbert Xu <herbert@gondor.apana.org.au>
- *
- * 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 <linux/atomic.h>
@@ -122,8 +117,10 @@
int af_alg_release(struct socket *sock)
{
- if (sock->sk)
+ if (sock->sk) {
sock_put(sock->sk);
+ sock->sk = NULL;
+ }
return 0;
}
EXPORT_SYMBOL_GPL(af_alg_release);
@@ -302,8 +299,6 @@
if (err)
goto unlock;
- sk2->sk_family = PF_ALG;
-
if (nokey || !ask->refcnt++)
sock_hold(sk);
ask->nokey_refcnt += nokey;
@@ -380,7 +375,6 @@
sock->ops = &alg_proto_ops;
sock_init_data(sock, sk);
- sk->sk_family = PF_ALG;
sk->sk_destruct = alg_sock_destruct;
return 0;
@@ -425,12 +419,12 @@
}
EXPORT_SYMBOL_GPL(af_alg_make_sg);
-void af_alg_link_sg(struct af_alg_sgl *sgl_prev, struct af_alg_sgl *sgl_new)
+static void af_alg_link_sg(struct af_alg_sgl *sgl_prev,
+ struct af_alg_sgl *sgl_new)
{
sg_unmark_end(sgl_prev->sg + sgl_prev->npages - 1);
sg_chain(sgl_prev->sg, sgl_prev->npages + 1, sgl_new->sg);
}
-EXPORT_SYMBOL_GPL(af_alg_link_sg);
void af_alg_free_sg(struct af_alg_sgl *sgl)
{
@@ -441,7 +435,7 @@
}
EXPORT_SYMBOL_GPL(af_alg_free_sg);
-int af_alg_cmsg_send(struct msghdr *msg, struct af_alg_control *con)
+static int af_alg_cmsg_send(struct msghdr *msg, struct af_alg_control *con)
{
struct cmsghdr *cmsg;
@@ -480,7 +474,6 @@
return 0;
}
-EXPORT_SYMBOL_GPL(af_alg_cmsg_send);
/**
* af_alg_alloc_tsgl - allocate the TX SGL
@@ -488,7 +481,7 @@
* @sk socket of connection to user space
* @return: 0 upon success, < 0 upon error
*/
-int af_alg_alloc_tsgl(struct sock *sk)
+static int af_alg_alloc_tsgl(struct sock *sk)
{
struct alg_sock *ask = alg_sk(sk);
struct af_alg_ctx *ctx = ask->private;
@@ -517,7 +510,6 @@
return 0;
}
-EXPORT_SYMBOL_GPL(af_alg_alloc_tsgl);
/**
* aead_count_tsgl - Count number of TX SG entries
@@ -532,17 +524,17 @@
*/
unsigned int af_alg_count_tsgl(struct sock *sk, size_t bytes, size_t offset)
{
- struct alg_sock *ask = alg_sk(sk);
- struct af_alg_ctx *ctx = ask->private;
- struct af_alg_tsgl *sgl, *tmp;
+ const struct alg_sock *ask = alg_sk(sk);
+ const struct af_alg_ctx *ctx = ask->private;
+ const struct af_alg_tsgl *sgl;
unsigned int i;
unsigned int sgl_count = 0;
if (!bytes)
return 0;
- list_for_each_entry_safe(sgl, tmp, &ctx->tsgl_list, list) {
- struct scatterlist *sg = sgl->sg;
+ list_for_each_entry(sgl, &ctx->tsgl_list, list) {
+ const struct scatterlist *sg = sgl->sg;
for (i = 0; i < sgl->cur; i++) {
size_t bytes_count;
@@ -640,8 +632,7 @@
}
list_del(&sgl->list);
- sock_kfree_s(sk, sgl, sizeof(*sgl) + sizeof(sgl->sg[0]) *
- (MAX_SGL_ENTS + 1));
+ sock_kfree_s(sk, sgl, struct_size(sgl, sg, MAX_SGL_ENTS + 1));
}
if (!ctx->used)
@@ -654,7 +645,7 @@
*
* @areq Request holding the TX and RX SGL
*/
-void af_alg_free_areq_sgls(struct af_alg_async_req *areq)
+static void af_alg_free_areq_sgls(struct af_alg_async_req *areq)
{
struct sock *sk = areq->sk;
struct alg_sock *ask = alg_sk(sk);
@@ -683,7 +674,6 @@
sock_kfree_s(sk, tsgl, areq->tsgl_entries * sizeof(*tsgl));
}
}
-EXPORT_SYMBOL_GPL(af_alg_free_areq_sgls);
/**
* af_alg_wait_for_wmem - wait for availability of writable memory
@@ -692,7 +682,7 @@
* @flags If MSG_DONTWAIT is set, then only report if function would sleep
* @return 0 when writable memory is available, < 0 upon error
*/
-int af_alg_wait_for_wmem(struct sock *sk, unsigned int flags)
+static int af_alg_wait_for_wmem(struct sock *sk, unsigned int flags)
{
DEFINE_WAIT_FUNC(wait, woken_wake_function);
int err = -ERESTARTSYS;
@@ -717,7 +707,6 @@
return err;
}
-EXPORT_SYMBOL_GPL(af_alg_wait_for_wmem);
/**
* af_alg_wmem_wakeup - wakeup caller when writable memory is available
@@ -786,8 +775,7 @@
*
* @sk socket of connection to user space
*/
-
-void af_alg_data_wakeup(struct sock *sk)
+static void af_alg_data_wakeup(struct sock *sk)
{
struct alg_sock *ask = alg_sk(sk);
struct af_alg_ctx *ctx = ask->private;
@@ -805,7 +793,6 @@
sk_wake_async(sk, SOCK_WAKE_SPACE, POLL_OUT);
rcu_read_unlock();
}
-EXPORT_SYMBOL_GPL(af_alg_data_wakeup);
/**
* af_alg_sendmsg - implementation of sendmsg system call handler