From: Christoph Hellwig <hch@lst.de>
To: "David S. Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>,
Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>,
Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>,
Eric Dumazet <edumazet@google.com>
Cc: linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org,
netdev@vger.kernel.org, bpf@vger.kernel.org,
netfilter-devel@vger.kernel.org, coreteam@netfilter.org,
linux-sctp@vger.kernel.org, linux-hams@vger.kernel.org,
linux-bluetooth@vger.kernel.org,
bridge@lists.linux-foundation.org, linux-can@vger.kernel.org,
dccp@vger.kernel.org, linux-decnet-user@lists.sourceforge.net,
linux-wpan@vger.kernel.org, linux-s390@vger.kernel.org,
mptcp@lists.01.org, lvs-devel@vger.kernel.org,
rds-devel@oss.oracle.com, linux-afs@lists.infradead.org,
tipc-discussion@lists.sourceforge.net, linux-x25@vger.kernel.org
Subject: [PATCH 07/24] net: switch sock_set_timeout to sockptr_t
Date: Mon, 20 Jul 2020 14:47:20 +0200 [thread overview]
Message-ID: <20200720124737.118617-8-hch@lst.de> (raw)
In-Reply-To: <20200720124737.118617-1-hch@lst.de>
Pass a sockptr_t to prepare for set_fs-less handling of the kernel
pointer from bpf-cgroup.
Signed-off-by: Christoph Hellwig <hch@lst.de>
---
include/net/sock.h | 3 ++-
net/core/sock.c | 26 ++++++++++++--------------
net/mptcp/protocol.c | 6 ++++--
net/socket.c | 3 ++-
4 files changed, 20 insertions(+), 18 deletions(-)
diff --git a/include/net/sock.h b/include/net/sock.h
index 62e18fc8ac9f96..bfb2fe2fc36876 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -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);
diff --git a/net/core/sock.c b/net/core/sock.c
index d45bb1c2c36abf..9cf8318bc51de4 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -825,7 +825,7 @@ 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;
@@ -839,12 +839,12 @@ 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;
@@ -957,7 +957,7 @@ int sock_setsockopt(struct socket *sock, int level, int optname,
ret = -EINVAL; /* 1003.1g */
break;
}
- if (copy_from_user(&ling, optval, sizeof(ling))) {
+ if (copy_from_sockptr(&ling, optval, sizeof(ling))) {
ret = -EFAULT;
break;
}
@@ -1051,21 +1051,20 @@ int sock_setsockopt(struct socket *sock, int level, int optname,
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;
@@ -1076,7 +1075,7 @@ int sock_setsockopt(struct socket *sock, int level, int optname,
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);
@@ -1086,8 +1085,7 @@ int sock_setsockopt(struct socket *sock, int level, int optname,
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;
@@ -1098,7 +1096,7 @@ int sock_setsockopt(struct socket *sock, int level, int optname,
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);
@@ -1178,7 +1176,7 @@ int sock_setsockopt(struct socket *sock, int level, int optname,
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;
}
@@ -1221,7 +1219,7 @@ int sock_setsockopt(struct socket *sock, int level, int optname,
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;
diff --git a/net/mptcp/protocol.c b/net/mptcp/protocol.c
index f0b0b503c2628d..27b6f250b87dfd 100644
--- a/net/mptcp/protocol.c
+++ b/net/mptcp/protocol.c
@@ -1643,7 +1643,8 @@ 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;
@@ -1654,7 +1655,8 @@ 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,
diff --git a/net/socket.c b/net/socket.c
index 93846568c2fb7a..c97f83d879ae75 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -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
--
2.27.0
next prev parent reply other threads:[~2020-07-20 12:51 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-20 12:47 get rid of the address_space override in setsockopt Christoph Hellwig
2020-07-20 12:47 ` [PATCH 01/24] bpfilter: reject kernel addresses Christoph Hellwig
2020-07-20 12:47 ` [PATCH 02/24] bpfilter: fix up a sparse annotation Christoph Hellwig
2020-07-21 2:40 ` Luc Van Oostenryck
2020-07-21 5:23 ` Christoph Hellwig
2020-07-21 5:28 ` Al Viro
2020-07-20 12:47 ` [PATCH 03/24] net: add a new sockptr_t type Christoph Hellwig
2020-07-20 16:37 ` Eric Biggers
2020-07-20 17:43 ` Christoph Hellwig
2020-07-20 17:55 ` Eric Biggers
2020-07-22 7:56 ` Christoph Hellwig
2020-07-21 9:55 ` David Laight
2020-07-21 10:14 ` David Laight
2020-07-20 12:47 ` [PATCH 04/24] net: switch copy_bpf_fprog_from_user to sockptr_t Christoph Hellwig
2020-07-20 12:47 ` [PATCH 05/24] net: switch sock_setbindtodevice " Christoph Hellwig
2020-07-20 12:47 ` [PATCH 06/24] net: switch sock_set_timeout " Christoph Hellwig
2020-07-20 12:47 ` Christoph Hellwig [this message]
2020-07-20 12:47 ` [PATCH 08/24] net/xfrm: switch xfrm_user_policy " Christoph Hellwig
2020-07-20 12:47 ` [PATCH 09/24] netfilter: remove the unused user argument to do_update_counters Christoph Hellwig
2020-07-20 12:47 ` [PATCH 10/24] netfilter: switch xt_copy_counters to sockptr_t Christoph Hellwig
2020-07-20 12:47 ` [PATCH 11/24] netfilter: switch nf_setsockopt " Christoph Hellwig
2020-07-20 12:47 ` [PATCH 12/24] bpfilter: switch bpfilter_ip_set_sockopt " Christoph Hellwig
2020-07-21 8:36 ` David Laight
2020-07-22 8:00 ` 'Christoph Hellwig'
2020-07-22 8:01 ` 'Christoph Hellwig'
2020-07-20 12:47 ` [PATCH 13/24] net/ipv4: switch ip_mroute_setsockopt " Christoph Hellwig
2020-07-20 12:47 ` [PATCH 14/24] net/ipv4: merge ip_options_get and ip_options_get_from_user Christoph Hellwig
2020-07-20 12:47 ` [PATCH 15/24] net/ipv4: switch do_ip_setsockopt to sockptr_t Christoph Hellwig
2020-07-20 12:47 ` [PATCH 16/24] net/ipv6: switch ip6_mroute_setsockopt " Christoph Hellwig
2020-07-20 12:47 ` [PATCH 17/24] net/ipv6: split up ipv6_flowlabel_opt Christoph Hellwig
2020-07-20 12:47 ` [PATCH 18/24] net/ipv6: switch ipv6_flowlabel_opt to sockptr_t Christoph Hellwig
2020-07-20 12:47 ` [PATCH 19/24] net/ipv6: factor out a ipv6_set_opt_hdr helper Christoph Hellwig
2020-07-20 12:47 ` [PATCH 20/24] net/ipv6: switch do_ipv6_setsockopt to sockptr_t Christoph Hellwig
2020-07-20 12:47 ` [PATCH 21/24] net/udp: switch udp_lib_setsockopt " Christoph Hellwig
2020-07-20 12:47 ` [PATCH 22/24] net/tcp: switch ->md5_parse " Christoph Hellwig
2020-07-20 12:47 ` [PATCH 23/24] net/tcp: switch do_tcp_setsockopt " Christoph Hellwig
2020-07-20 12:47 ` [PATCH 24/24] net: pass a sockptr_t into ->setsockopt Christoph Hellwig
2020-07-20 14:19 ` Stefan Schmidt
2020-07-20 23:20 ` David Miller
2020-07-22 8:26 ` [MPTCP] " Matthieu Baerts
2020-07-20 16:38 ` get rid of the address_space override in setsockopt Eric Biggers
2020-07-20 17:43 ` Christoph Hellwig
2020-07-20 20:47 ` Alexei Starovoitov
2020-07-22 7:56 ` Christoph Hellwig
2020-07-22 17:09 ` Alexei Starovoitov
2020-07-21 9:38 ` David Laight
2020-07-22 8:06 ` 'Christoph Hellwig'
2020-07-22 8:21 ` David Laight
2020-07-21 10:26 ` David Laight
2020-07-22 8:07 ` 'Christoph Hellwig'
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