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 16/24] net/ipv6: switch ip6_mroute_setsockopt to sockptr_t
Date: Mon, 20 Jul 2020 14:47:29 +0200 [thread overview]
Message-ID: <20200720124737.118617-17-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/linux/mroute6.h | 8 ++++----
net/ipv6/ip6mr.c | 17 +++++++++--------
net/ipv6/ipv6_sockglue.c | 3 ++-
3 files changed, 15 insertions(+), 13 deletions(-)
diff --git a/include/linux/mroute6.h b/include/linux/mroute6.h
index c4a45859f586d4..bc351a85ce9b9c 100644
--- a/include/linux/mroute6.h
+++ b/include/linux/mroute6.h
@@ -8,6 +8,7 @@
#include <net/net_namespace.h>
#include <uapi/linux/mroute6.h>
#include <linux/mroute_base.h>
+#include <linux/sockptr.h>
#include <net/fib_rules.h>
#ifdef CONFIG_IPV6_MROUTE
@@ -25,7 +26,7 @@ static inline int ip6_mroute_opt(int opt)
struct sock;
#ifdef CONFIG_IPV6_MROUTE
-extern int ip6_mroute_setsockopt(struct sock *, int, char __user *, unsigned int);
+extern int ip6_mroute_setsockopt(struct sock *, int, sockptr_t, unsigned int);
extern int ip6_mroute_getsockopt(struct sock *, int, char __user *, int __user *);
extern int ip6_mr_input(struct sk_buff *skb);
extern int ip6mr_ioctl(struct sock *sk, int cmd, void __user *arg);
@@ -33,9 +34,8 @@ extern int ip6mr_compat_ioctl(struct sock *sk, unsigned int cmd, void __user *ar
extern int ip6_mr_init(void);
extern void ip6_mr_cleanup(void);
#else
-static inline
-int ip6_mroute_setsockopt(struct sock *sock,
- int optname, char __user *optval, unsigned int optlen)
+static inline int ip6_mroute_setsockopt(struct sock *sock, int optname,
+ sockptr_t optval, unsigned int optlen)
{
return -ENOPROTOOPT;
}
diff --git a/net/ipv6/ip6mr.c b/net/ipv6/ip6mr.c
index 1f4d20e97c07f9..06b0d2c329b94b 100644
--- a/net/ipv6/ip6mr.c
+++ b/net/ipv6/ip6mr.c
@@ -1629,7 +1629,8 @@ EXPORT_SYMBOL(mroute6_is_socket);
* MOSPF/PIM router set up we can clean this up.
*/
-int ip6_mroute_setsockopt(struct sock *sk, int optname, char __user *optval, unsigned int optlen)
+int ip6_mroute_setsockopt(struct sock *sk, int optname, sockptr_t optval,
+ unsigned int optlen)
{
int ret, parent = 0;
struct mif6ctl vif;
@@ -1665,7 +1666,7 @@ int ip6_mroute_setsockopt(struct sock *sk, int optname, char __user *optval, uns
case MRT6_ADD_MIF:
if (optlen < sizeof(vif))
return -EINVAL;
- if (copy_from_user(&vif, optval, sizeof(vif)))
+ if (copy_from_sockptr(&vif, optval, sizeof(vif)))
return -EFAULT;
if (vif.mif6c_mifi >= MAXMIFS)
return -ENFILE;
@@ -1678,7 +1679,7 @@ int ip6_mroute_setsockopt(struct sock *sk, int optname, char __user *optval, uns
case MRT6_DEL_MIF:
if (optlen < sizeof(mifi_t))
return -EINVAL;
- if (copy_from_user(&mifi, optval, sizeof(mifi_t)))
+ if (copy_from_sockptr(&mifi, optval, sizeof(mifi_t)))
return -EFAULT;
rtnl_lock();
ret = mif6_delete(mrt, mifi, 0, NULL);
@@ -1697,7 +1698,7 @@ int ip6_mroute_setsockopt(struct sock *sk, int optname, char __user *optval, uns
case MRT6_DEL_MFC_PROXY:
if (optlen < sizeof(mfc))
return -EINVAL;
- if (copy_from_user(&mfc, optval, sizeof(mfc)))
+ if (copy_from_sockptr(&mfc, optval, sizeof(mfc)))
return -EFAULT;
if (parent == 0)
parent = mfc.mf6cc_parent;
@@ -1718,7 +1719,7 @@ int ip6_mroute_setsockopt(struct sock *sk, int optname, char __user *optval, uns
if (optlen != sizeof(flags))
return -EINVAL;
- if (get_user(flags, (int __user *)optval))
+ if (copy_from_sockptr(&flags, optval, sizeof(flags)))
return -EFAULT;
rtnl_lock();
mroute_clean_tables(mrt, flags);
@@ -1735,7 +1736,7 @@ int ip6_mroute_setsockopt(struct sock *sk, int optname, char __user *optval, uns
if (optlen != sizeof(v))
return -EINVAL;
- if (get_user(v, (int __user *)optval))
+ if (copy_from_sockptr(&v, optval, sizeof(v)))
return -EFAULT;
mrt->mroute_do_assert = v;
return 0;
@@ -1748,7 +1749,7 @@ int ip6_mroute_setsockopt(struct sock *sk, int optname, char __user *optval, uns
if (optlen != sizeof(v))
return -EINVAL;
- if (get_user(v, (int __user *)optval))
+ if (copy_from_sockptr(&v, optval, sizeof(v)))
return -EFAULT;
v = !!v;
rtnl_lock();
@@ -1769,7 +1770,7 @@ int ip6_mroute_setsockopt(struct sock *sk, int optname, char __user *optval, uns
if (optlen != sizeof(u32))
return -EINVAL;
- if (get_user(v, (u32 __user *)optval))
+ if (copy_from_sockptr(&v, optval, sizeof(v)))
return -EFAULT;
/* "pim6reg%u" should not exceed 16 bytes (IFNAMSIZ) */
if (v != RT_TABLE_DEFAULT && v >= 100000000)
diff --git a/net/ipv6/ipv6_sockglue.c b/net/ipv6/ipv6_sockglue.c
index 85892b35cff7b3..119dfaf5f4bb26 100644
--- a/net/ipv6/ipv6_sockglue.c
+++ b/net/ipv6/ipv6_sockglue.c
@@ -337,7 +337,8 @@ static int do_ipv6_setsockopt(struct sock *sk, int level, int optname,
valbool = (val != 0);
if (ip6_mroute_opt(optname))
- return ip6_mroute_setsockopt(sk, optname, optval, optlen);
+ return ip6_mroute_setsockopt(sk, optname, USER_SOCKPTR(optval),
+ optlen);
if (needs_rtnl)
rtnl_lock();
--
2.27.0
next prev parent reply other threads:[~2020-07-20 12:50 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 ` [PATCH 07/24] " Christoph Hellwig
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 ` Christoph Hellwig [this message]
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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