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net: Convert proto_ops bind() callbacks to use sockaddr_unsized

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Update all struct proto_ops bind() callback function prototypes from
"struct sockaddr *" to "struct sockaddr_unsized *" to avoid lying to the
compiler about object sizes. Calls into struct proto handlers gain casts
that will be removed in the struct proto conversion patch.

No binary changes expected.

Signed-off-by: Kees Cook <kees@kernel.org>
Link: https://patch.msgid.link/20251104002617.2752303-2-kees@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Kees Cook
2025-11-03 16:26:10 -08:00
committed by Jakub Kicinski
parent bf33247a90
commit 0e50474fa5
74 changed files with 113 additions and 112 deletions
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6
net/mptcp/protocol.c
View File

@@ -3856,7 +3856,7 @@ static struct proto mptcp_prot = {
.no_autobind = true,
};
static int mptcp_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
static int mptcp_bind(struct socket *sock, struct sockaddr_unsized *uaddr, int addr_len)
{
struct mptcp_sock *msk = mptcp_sk(sock->sk);
struct sock *ssk, *sk = sock->sk;
@@ -3870,10 +3870,10 @@ static int mptcp_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
}
if (sk->sk_family == AF_INET)
err = inet_bind_sk(ssk, uaddr, addr_len);
err = inet_bind_sk(ssk, (struct sockaddr *)uaddr, addr_len);
#if IS_ENABLED(CONFIG_MPTCP_IPV6)
else if (sk->sk_family == AF_INET6)
err = inet6_bind_sk(ssk, uaddr, addr_len);
err = inet6_bind_sk(ssk, (struct sockaddr *)uaddr, addr_len);
#endif
if (!err)
mptcp_copy_inaddrs(sk, ssk);