[PATCH 22/26] net/udp: switch udp_lib_setsockopt to sockptr_t
From: Christoph Hellwig <hch@lst.de>
Date: 2020-07-23 06:11:00
Also in:
bpf, bridge, linux-bluetooth, linux-can, linux-crypto, linux-hams, linux-s390, linux-sctp, lkml, lvs-devel, mptcp, netfilter-devel
Subsystem:
networking [general], the rest, user datagram protocol (udp) · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds, Willem de Bruijn
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/udp.h | 2 +- net/ipv4/udp.c | 7 ++++--- net/ipv6/udp.c | 3 ++- 3 files changed, 7 insertions(+), 5 deletions(-)
diff --git a/include/net/udp.h b/include/net/udp.h
index 17a9e86a807638..295d52a7359827 100644
--- a/include/net/udp.h
+++ b/include/net/udp.h@@ -306,7 +306,7 @@ struct sk_buff *skb_udp_tunnel_segment(struct sk_buff *skb, int udp_lib_getsockopt(struct sock *sk, int level, int optname, char __user *optval, int __user *optlen); int udp_lib_setsockopt(struct sock *sk, int level, int optname, - char __user *optval, unsigned int optlen, + sockptr_t optval, unsigned int optlen, int (*push_pending_frames)(struct sock *)); struct sock *udp4_lib_lookup(struct net *net, __be32 saddr, __be16 sport, __be32 daddr, __be16 dport, int dif);
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index bb95cddcb040a6..c6cb2d09dbc75e 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c@@ -2588,7 +2588,7 @@ void udp_destroy_sock(struct sock *sk) * Socket option code for UDP */ int udp_lib_setsockopt(struct sock *sk, int level, int optname, - char __user *optval, unsigned int optlen, + sockptr_t optval, unsigned int optlen, int (*push_pending_frames)(struct sock *)) { struct udp_sock *up = udp_sk(sk);
@@ -2599,7 +2599,7 @@ int udp_lib_setsockopt(struct sock *sk, int level, int optname, 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;
@@ -2707,7 +2707,8 @@ int udp_setsockopt(struct sock *sk, int level, int optname, char __user *optval, unsigned int optlen) { if (level == SOL_UDP || level == SOL_UDPLITE) - return udp_lib_setsockopt(sk, level, optname, optval, optlen, + return udp_lib_setsockopt(sk, level, optname, + USER_SOCKPTR(optval), optlen, udp_push_pending_frames); return ip_setsockopt(sk, level, optname, optval, optlen); }
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index 7c1143feb2bf7e..2df1e6c9d7cbf6 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c@@ -1622,7 +1622,8 @@ int udpv6_setsockopt(struct sock *sk, int level, int optname, char __user *optval, unsigned int optlen) { if (level == SOL_UDP || level == SOL_UDPLITE) - return udp_lib_setsockopt(sk, level, optname, optval, optlen, + return udp_lib_setsockopt(sk, level, optname, + USER_SOCKPTR(optval), optlen, udp_v6_push_pending_frames); return ipv6_setsockopt(sk, level, optname, optval, optlen); }
--
2.27.0