Commit c8c1bbb6 authored by Christoph Hellwig's avatar Christoph Hellwig Committed by David S. Miller
Browse files

net: switch sock_set_timeout to sockptr_t 



Pass a sockptr_t to prepare for set_fs-less handling of the kernel
pointer from bpf-cgroup.

Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Acked-by: default avatarMatthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent c34645ac

include/net/sock.h

+2 −1
Original line number Diff line number Diff line
@@ -59,6 +59,7 @@ 
#include <linux/filter.h>

#include <linux/rculist_nulls.h>

#include <linux/poll.h>

#include <linux/sockptr.h>



#include <linux/atomic.h>

#include <linux/refcount.h>
@@ -1669,7 +1670,7 @@ void sock_pfree(struct sk_buff *skb); 
#endif



int sock_setsockopt(struct socket *sock, int level, int op,

		    char __user *optval, unsigned int optlen);

		    sockptr_t optval, unsigned int optlen);



int sock_getsockopt(struct socket *sock, int level, int op,

		    char __user *optval, int __user *optlen);

net/core/sock.c

+12 −14
Original line number Diff line number Diff line
@@ -826,7 +826,7 @@ EXPORT_SYMBOL(sock_set_rcvbuf); 
 */



int sock_setsockopt(struct socket *sock, int level, int optname,

		    char __user *optval, unsigned int optlen)

		    sockptr_t optval, unsigned int optlen)

{

	struct sock_txtime sk_txtime;

	struct sock *sk = sock->sk;
@@ -840,12 +840,12 @@ int sock_setsockopt(struct socket *sock, int level, int optname, 
	 */



	if (optname == SO_BINDTODEVICE)

		return sock_setbindtodevice(sk, USER_SOCKPTR(optval), optlen);

		return sock_setbindtodevice(sk, optval, optlen);



	if (optlen < sizeof(int))

		return -EINVAL;



	if (get_user(val, (int __user *)optval))

	if (copy_from_sockptr(&val, optval, sizeof(val)))

		return -EFAULT;



	valbool = val ? 1 : 0;
@@ -958,7 +958,7 @@ set_sndbuf: 
			ret = -EINVAL;	/* 1003.1g */

			break;

		}

		if (copy_from_user(&ling, optval, sizeof(ling))) {

		if (copy_from_sockptr(&ling, optval, sizeof(ling))) {

			ret = -EFAULT;

			break;

		}
@@ -1052,21 +1052,20 @@ set_sndbuf: 


	case SO_RCVTIMEO_OLD:

	case SO_RCVTIMEO_NEW:

		ret = sock_set_timeout(&sk->sk_rcvtimeo, USER_SOCKPTR(optval),

		ret = sock_set_timeout(&sk->sk_rcvtimeo, optval,

				       optlen, optname == SO_RCVTIMEO_OLD);

		break;



	case SO_SNDTIMEO_OLD:

	case SO_SNDTIMEO_NEW:

		ret = sock_set_timeout(&sk->sk_sndtimeo, USER_SOCKPTR(optval),

		ret = sock_set_timeout(&sk->sk_sndtimeo, optval,

				       optlen, optname == SO_SNDTIMEO_OLD);

		break;



	case SO_ATTACH_FILTER: {

		struct sock_fprog fprog;



		ret = copy_bpf_fprog_from_user(&fprog, USER_SOCKPTR(optval),

					       optlen);

		ret = copy_bpf_fprog_from_user(&fprog, optval, optlen);

		if (!ret)

			ret = sk_attach_filter(&fprog, sk);

		break;
@@ -1077,7 +1076,7 @@ set_sndbuf: 
			u32 ufd;



			ret = -EFAULT;

			if (copy_from_user(&ufd, optval, sizeof(ufd)))

			if (copy_from_sockptr(&ufd, optval, sizeof(ufd)))

				break;



			ret = sk_attach_bpf(ufd, sk);
@@ -1087,8 +1086,7 @@ set_sndbuf: 
	case SO_ATTACH_REUSEPORT_CBPF: {

		struct sock_fprog fprog;



		ret = copy_bpf_fprog_from_user(&fprog, USER_SOCKPTR(optval),

					       optlen);

		ret = copy_bpf_fprog_from_user(&fprog, optval, optlen);

		if (!ret)

			ret = sk_reuseport_attach_filter(&fprog, sk);

		break;
@@ -1099,7 +1097,7 @@ set_sndbuf: 
			u32 ufd;



			ret = -EFAULT;

			if (copy_from_user(&ufd, optval, sizeof(ufd)))

			if (copy_from_sockptr(&ufd, optval, sizeof(ufd)))

				break;



			ret = sk_reuseport_attach_bpf(ufd, sk);
@@ -1179,7 +1177,7 @@ set_sndbuf: 


		if (sizeof(ulval) != sizeof(val) &&

		    optlen >= sizeof(ulval) &&

		    get_user(ulval, (unsigned long __user *)optval)) {

		    copy_from_sockptr(&ulval, optval, sizeof(ulval))) {

			ret = -EFAULT;

			break;

		}
@@ -1222,7 +1220,7 @@ set_sndbuf: 
		if (optlen != sizeof(struct sock_txtime)) {

			ret = -EINVAL;

			break;

		} else if (copy_from_user(&sk_txtime, optval,

		} else if (copy_from_sockptr(&sk_txtime, optval,

			   sizeof(struct sock_txtime))) {

			ret = -EFAULT;

			break;

net/mptcp/protocol.c

+4 −2
Original line number Diff line number Diff line
@@ -1648,7 +1648,8 @@ static int mptcp_setsockopt_sol_socket(struct mptcp_sock *msk, int optname, 
			return -EINVAL;

		}



		ret = sock_setsockopt(ssock, SOL_SOCKET, optname, optval, optlen);

		ret = sock_setsockopt(ssock, SOL_SOCKET, optname,

				      USER_SOCKPTR(optval), optlen);

		if (ret == 0) {

			if (optname == SO_REUSEPORT)

				sk->sk_reuseport = ssock->sk->sk_reuseport;
@@ -1659,7 +1660,8 @@ static int mptcp_setsockopt_sol_socket(struct mptcp_sock *msk, int optname, 
		return ret;

	}



	return sock_setsockopt(sk->sk_socket, SOL_SOCKET, optname, optval, optlen);

	return sock_setsockopt(sk->sk_socket, SOL_SOCKET, optname,

			       USER_SOCKPTR(optval), optlen);

}



static int mptcp_setsockopt_v6(struct mptcp_sock *msk, int optname,

net/socket.c

+2 −1
Original line number Diff line number Diff line
@@ -2130,7 +2130,8 @@ int __sys_setsockopt(int fd, int level, int optname, char __user *optval, 
	}



	if (level == SOL_SOCKET && !sock_use_custom_sol_socket(sock))

		err = sock_setsockopt(sock, level, optname, optval, optlen);

		err = sock_setsockopt(sock, level, optname,

				      USER_SOCKPTR(optval), optlen);

	else if (unlikely(!sock->ops->setsockopt))

		err = -EOPNOTSUPP;

	else

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