[PATCH 22/22] net: make ->{get,set}sockopt in proto_ops optional
From: Christoph Hellwig <hch@lst.de>
Date: 2020-07-17 06:24:56
Also in:
bpf, bridge, linux-arch, linux-bluetooth, linux-can, linux-sctp, lkml, mptcp, netfilter-devel
Subsystem:
bluetooth subsystem, can network layer, crypto api, networking drivers, networking [general], networking [ipsec], networking [sockets], networking [unix sockets], nfc subsystem, packet sockets, phonet protocol, ppp over ethernet, qualcomm ipc router (qrtr) driver, shared memory communications (smc) sockets, the rest, vm sockets (af_vsock) · Maintainers:
Marcel Holtmann, Luiz Augusto von Dentz, Oliver Hartkopp, Marc Kleine-Budde, Herbert Xu, "David S. Miller", Andrew Lunn, Eric Dumazet, Jakub Kicinski, Paolo Abeni, Steffen Klassert, Kuniyuki Iwashima, Willem de Bruijn, David Heidelberg, Remi Denis-Courmont, Manivannan Sadhasivam, D. Wythe, Dust Li, Sidraya Jayagond, Wenjia Zhang, Linus Torvalds, Stefano Garzarella
Just check for a NULL method instead of wiring up
sock_no_{get,set}sockopt.
Signed-off-by: Christoph Hellwig <hch@lst.de>
---
crypto/af_alg.c | 1 -
crypto/algif_aead.c | 4 ----
crypto/algif_hash.c | 4 ----
crypto/algif_rng.c | 2 --
crypto/algif_skcipher.c | 4 ----
drivers/isdn/mISDN/socket.c | 2 --
drivers/net/ppp/pppoe.c | 2 --
drivers/net/ppp/pptp.c | 2 --
include/net/sock.h | 2 --
net/appletalk/ddp.c | 2 --
net/bluetooth/bnep/sock.c | 2 --
net/bluetooth/cmtp/sock.c | 2 --
net/bluetooth/hidp/sock.c | 2 --
net/caif/caif_socket.c | 2 --
net/can/bcm.c | 2 --
net/core/sock.c | 14 --------------
net/key/af_key.c | 2 --
net/nfc/llcp_sock.c | 2 --
net/nfc/rawsock.c | 4 ----
net/packet/af_packet.c | 2 --
net/phonet/socket.c | 2 --
net/qrtr/qrtr.c | 2 --
net/smc/af_smc.c | 9 +++++++--
net/socket.c | 4 ++++
net/unix/af_unix.c | 6 ------
net/vmw_vsock/af_vsock.c | 2 --
26 files changed, 11 insertions(+), 73 deletions(-)
diff --git a/crypto/af_alg.c b/crypto/af_alg.c
index 28fc323e3fe304..29f71428520b4b 100644
--- a/crypto/af_alg.c
+++ b/crypto/af_alg.c@@ -335,7 +335,6 @@ static const struct proto_ops alg_proto_ops = { .ioctl = sock_no_ioctl, .listen = sock_no_listen, .shutdown = sock_no_shutdown, - .getsockopt = sock_no_getsockopt, .mmap = sock_no_mmap, .sendpage = sock_no_sendpage, .sendmsg = sock_no_sendmsg,
diff --git a/crypto/algif_aead.c b/crypto/algif_aead.c
index 0ae000a61c7f5b..527d09a694627b 100644
--- a/crypto/algif_aead.c
+++ b/crypto/algif_aead.c@@ -361,11 +361,9 @@ static struct proto_ops algif_aead_ops = { .ioctl = sock_no_ioctl, .listen = sock_no_listen, .shutdown = sock_no_shutdown, - .getsockopt = sock_no_getsockopt, .mmap = sock_no_mmap, .bind = sock_no_bind, .accept = sock_no_accept, - .setsockopt = sock_no_setsockopt, .release = af_alg_release, .sendmsg = aead_sendmsg,
@@ -454,11 +452,9 @@ static struct proto_ops algif_aead_ops_nokey = { .ioctl = sock_no_ioctl, .listen = sock_no_listen, .shutdown = sock_no_shutdown, - .getsockopt = sock_no_getsockopt, .mmap = sock_no_mmap, .bind = sock_no_bind, .accept = sock_no_accept, - .setsockopt = sock_no_setsockopt, .release = af_alg_release, .sendmsg = aead_sendmsg_nokey,
diff --git a/crypto/algif_hash.c b/crypto/algif_hash.c
index e71727c25a7db7..50f7b22f1b4825 100644
--- a/crypto/algif_hash.c
+++ b/crypto/algif_hash.c@@ -279,10 +279,8 @@ static struct proto_ops algif_hash_ops = { .ioctl = sock_no_ioctl, .listen = sock_no_listen, .shutdown = sock_no_shutdown, - .getsockopt = sock_no_getsockopt, .mmap = sock_no_mmap, .bind = sock_no_bind, - .setsockopt = sock_no_setsockopt, .release = af_alg_release, .sendmsg = hash_sendmsg,
@@ -383,10 +381,8 @@ static struct proto_ops algif_hash_ops_nokey = { .ioctl = sock_no_ioctl, .listen = sock_no_listen, .shutdown = sock_no_shutdown, - .getsockopt = sock_no_getsockopt, .mmap = sock_no_mmap, .bind = sock_no_bind, - .setsockopt = sock_no_setsockopt, .release = af_alg_release, .sendmsg = hash_sendmsg_nokey,
diff --git a/crypto/algif_rng.c b/crypto/algif_rng.c
index 087c0ad09d382b..6300e0566dc560 100644
--- a/crypto/algif_rng.c
+++ b/crypto/algif_rng.c@@ -101,11 +101,9 @@ static struct proto_ops algif_rng_ops = { .ioctl = sock_no_ioctl, .listen = sock_no_listen, .shutdown = sock_no_shutdown, - .getsockopt = sock_no_getsockopt, .mmap = sock_no_mmap, .bind = sock_no_bind, .accept = sock_no_accept, - .setsockopt = sock_no_setsockopt, .sendmsg = sock_no_sendmsg, .sendpage = sock_no_sendpage,
diff --git a/crypto/algif_skcipher.c b/crypto/algif_skcipher.c
index ec5567c87a6df4..c487887f46711e 100644
--- a/crypto/algif_skcipher.c
+++ b/crypto/algif_skcipher.c@@ -188,11 +188,9 @@ static struct proto_ops algif_skcipher_ops = { .ioctl = sock_no_ioctl, .listen = sock_no_listen, .shutdown = sock_no_shutdown, - .getsockopt = sock_no_getsockopt, .mmap = sock_no_mmap, .bind = sock_no_bind, .accept = sock_no_accept, - .setsockopt = sock_no_setsockopt, .release = af_alg_release, .sendmsg = skcipher_sendmsg,
@@ -281,11 +279,9 @@ static struct proto_ops algif_skcipher_ops_nokey = { .ioctl = sock_no_ioctl, .listen = sock_no_listen, .shutdown = sock_no_shutdown, - .getsockopt = sock_no_getsockopt, .mmap = sock_no_mmap, .bind = sock_no_bind, .accept = sock_no_accept, - .setsockopt = sock_no_setsockopt, .release = af_alg_release, .sendmsg = skcipher_sendmsg_nokey,
diff --git a/drivers/isdn/mISDN/socket.c b/drivers/isdn/mISDN/socket.c
index dff4132b3702c6..1b2b91479107bc 100644
--- a/drivers/isdn/mISDN/socket.c
+++ b/drivers/isdn/mISDN/socket.c@@ -738,8 +738,6 @@ static const struct proto_ops base_sock_ops = { .recvmsg = sock_no_recvmsg, .listen = sock_no_listen, .shutdown = sock_no_shutdown, - .setsockopt = sock_no_setsockopt, - .getsockopt = sock_no_getsockopt, .connect = sock_no_connect, .socketpair = sock_no_socketpair, .accept = sock_no_accept,
diff --git a/drivers/net/ppp/pppoe.c b/drivers/net/ppp/pppoe.c
index beedaad082551b..d7f50b835050d1 100644
--- a/drivers/net/ppp/pppoe.c
+++ b/drivers/net/ppp/pppoe.c@@ -1110,8 +1110,6 @@ static const struct proto_ops pppoe_ops = { .poll = datagram_poll, .listen = sock_no_listen, .shutdown = sock_no_shutdown, - .setsockopt = sock_no_setsockopt, - .getsockopt = sock_no_getsockopt, .sendmsg = pppoe_sendmsg, .recvmsg = pppoe_recvmsg, .mmap = sock_no_mmap,
diff --git a/drivers/net/ppp/pptp.c b/drivers/net/ppp/pptp.c
index acccb747aedad6..ee5058445d06e2 100644
--- a/drivers/net/ppp/pptp.c
+++ b/drivers/net/ppp/pptp.c@@ -618,8 +618,6 @@ static const struct proto_ops pptp_ops = { .getname = pptp_getname, .listen = sock_no_listen, .shutdown = sock_no_shutdown, - .setsockopt = sock_no_setsockopt, - .getsockopt = sock_no_getsockopt, .sendmsg = sock_no_sendmsg, .recvmsg = sock_no_recvmsg, .mmap = sock_no_mmap,
diff --git a/include/net/sock.h b/include/net/sock.h
index 3bd8bc578bf3e5..62e18fc8ac9f96 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h@@ -1714,8 +1714,6 @@ int sock_no_getname(struct socket *, struct sockaddr *, int); int sock_no_ioctl(struct socket *, unsigned int, unsigned long); int sock_no_listen(struct socket *, int); int sock_no_shutdown(struct socket *, int); -int sock_no_getsockopt(struct socket *, int , int, char __user *, int __user *); -int sock_no_setsockopt(struct socket *, int, int, char __user *, unsigned int); int sock_no_sendmsg(struct socket *, struct msghdr *, size_t); int sock_no_sendmsg_locked(struct sock *sk, struct msghdr *msg, size_t len); int sock_no_recvmsg(struct socket *, struct msghdr *, size_t, int);
diff --git a/net/appletalk/ddp.c b/net/appletalk/ddp.c
index 15787e8c0629a0..1d48708c5a2eb5 100644
--- a/net/appletalk/ddp.c
+++ b/net/appletalk/ddp.c@@ -1917,8 +1917,6 @@ static const struct proto_ops atalk_dgram_ops = { #endif .listen = sock_no_listen, .shutdown = sock_no_shutdown, - .setsockopt = sock_no_setsockopt, - .getsockopt = sock_no_getsockopt, .sendmsg = atalk_sendmsg, .recvmsg = atalk_recvmsg, .mmap = sock_no_mmap,
diff --git a/net/bluetooth/bnep/sock.c b/net/bluetooth/bnep/sock.c
index cfd83c5521aecc..d515571b2afba9 100644
--- a/net/bluetooth/bnep/sock.c
+++ b/net/bluetooth/bnep/sock.c@@ -182,8 +182,6 @@ static const struct proto_ops bnep_sock_ops = { .recvmsg = sock_no_recvmsg, .listen = sock_no_listen, .shutdown = sock_no_shutdown, - .setsockopt = sock_no_setsockopt, - .getsockopt = sock_no_getsockopt, .connect = sock_no_connect, .socketpair = sock_no_socketpair, .accept = sock_no_accept,
diff --git a/net/bluetooth/cmtp/sock.c b/net/bluetooth/cmtp/sock.c
index defdd4871919f3..96d49d9fae9643 100644
--- a/net/bluetooth/cmtp/sock.c
+++ b/net/bluetooth/cmtp/sock.c@@ -185,8 +185,6 @@ static const struct proto_ops cmtp_sock_ops = { .recvmsg = sock_no_recvmsg, .listen = sock_no_listen, .shutdown = sock_no_shutdown, - .setsockopt = sock_no_setsockopt, - .getsockopt = sock_no_getsockopt, .connect = sock_no_connect, .socketpair = sock_no_socketpair, .accept = sock_no_accept,
diff --git a/net/bluetooth/hidp/sock.c b/net/bluetooth/hidp/sock.c
index 03be6a4baef30e..595fb3c9d6c361 100644
--- a/net/bluetooth/hidp/sock.c
+++ b/net/bluetooth/hidp/sock.c@@ -233,8 +233,6 @@ static const struct proto_ops hidp_sock_ops = { .recvmsg = sock_no_recvmsg, .listen = sock_no_listen, .shutdown = sock_no_shutdown, - .setsockopt = sock_no_setsockopt, - .getsockopt = sock_no_getsockopt, .connect = sock_no_connect, .socketpair = sock_no_socketpair, .accept = sock_no_accept,
diff --git a/net/caif/caif_socket.c b/net/caif/caif_socket.c
index ef14da50a98191..b94ecd931002e7 100644
--- a/net/caif/caif_socket.c
+++ b/net/caif/caif_socket.c@@ -981,7 +981,6 @@ static const struct proto_ops caif_seqpacket_ops = { .listen = sock_no_listen, .shutdown = sock_no_shutdown, .setsockopt = setsockopt, - .getsockopt = sock_no_getsockopt, .sendmsg = caif_seqpkt_sendmsg, .recvmsg = caif_seqpkt_recvmsg, .mmap = sock_no_mmap,
@@ -1002,7 +1001,6 @@ static const struct proto_ops caif_stream_ops = { .listen = sock_no_listen, .shutdown = sock_no_shutdown, .setsockopt = setsockopt, - .getsockopt = sock_no_getsockopt, .sendmsg = caif_stream_sendmsg, .recvmsg = caif_stream_recvmsg, .mmap = sock_no_mmap,
diff --git a/net/can/bcm.c b/net/can/bcm.c
index c96fa0f33db39c..d14ea12affb112 100644
--- a/net/can/bcm.c
+++ b/net/can/bcm.c@@ -1648,8 +1648,6 @@ static const struct proto_ops bcm_ops = { .gettstamp = sock_gettstamp, .listen = sock_no_listen, .shutdown = sock_no_shutdown, - .setsockopt = sock_no_setsockopt, - .getsockopt = sock_no_getsockopt, .sendmsg = bcm_sendmsg, .recvmsg = bcm_recvmsg, .mmap = sock_no_mmap,
diff --git a/net/core/sock.c b/net/core/sock.c
index 48655d5c4cf37a..d828bfe1c47dfa 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c@@ -2783,20 +2783,6 @@ int sock_no_shutdown(struct socket *sock, int how) } EXPORT_SYMBOL(sock_no_shutdown); -int sock_no_setsockopt(struct socket *sock, int level, int optname, - char __user *optval, unsigned int optlen) -{ - return -EOPNOTSUPP; -} -EXPORT_SYMBOL(sock_no_setsockopt); - -int sock_no_getsockopt(struct socket *sock, int level, int optname, - char __user *optval, int __user *optlen) -{ - return -EOPNOTSUPP; -} -EXPORT_SYMBOL(sock_no_getsockopt); - int sock_no_sendmsg(struct socket *sock, struct msghdr *m, size_t len) { return -EOPNOTSUPP;
diff --git a/net/key/af_key.c b/net/key/af_key.c
index b67ed3a8486c25..f13626c1a98592 100644
--- a/net/key/af_key.c
+++ b/net/key/af_key.c@@ -3734,8 +3734,6 @@ static const struct proto_ops pfkey_ops = { .ioctl = sock_no_ioctl, .listen = sock_no_listen, .shutdown = sock_no_shutdown, - .setsockopt = sock_no_setsockopt, - .getsockopt = sock_no_getsockopt, .mmap = sock_no_mmap, .sendpage = sock_no_sendpage,
diff --git a/net/nfc/llcp_sock.c b/net/nfc/llcp_sock.c
index 28604414dec1b7..6da1e2334bb697 100644
--- a/net/nfc/llcp_sock.c
+++ b/net/nfc/llcp_sock.c@@ -921,8 +921,6 @@ static const struct proto_ops llcp_rawsock_ops = { .ioctl = sock_no_ioctl, .listen = sock_no_listen, .shutdown = sock_no_shutdown, - .setsockopt = sock_no_setsockopt, - .getsockopt = sock_no_getsockopt, .sendmsg = sock_no_sendmsg, .recvmsg = llcp_sock_recvmsg, .mmap = sock_no_mmap,
diff --git a/net/nfc/rawsock.c b/net/nfc/rawsock.c
index ba5ffd3badd324..b2061b6746eaa6 100644
--- a/net/nfc/rawsock.c
+++ b/net/nfc/rawsock.c@@ -276,8 +276,6 @@ static const struct proto_ops rawsock_ops = { .ioctl = sock_no_ioctl, .listen = sock_no_listen, .shutdown = sock_no_shutdown, - .setsockopt = sock_no_setsockopt, - .getsockopt = sock_no_getsockopt, .sendmsg = rawsock_sendmsg, .recvmsg = rawsock_recvmsg, .mmap = sock_no_mmap,
@@ -296,8 +294,6 @@ static const struct proto_ops rawsock_raw_ops = { .ioctl = sock_no_ioctl, .listen = sock_no_listen, .shutdown = sock_no_shutdown, - .setsockopt = sock_no_setsockopt, - .getsockopt = sock_no_getsockopt, .sendmsg = sock_no_sendmsg, .recvmsg = rawsock_recvmsg, .mmap = sock_no_mmap,
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index 35aee9e980536d..c240fb5de3f014 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c@@ -4503,8 +4503,6 @@ static const struct proto_ops packet_ops_spkt = { .gettstamp = sock_gettstamp, .listen = sock_no_listen, .shutdown = sock_no_shutdown, - .setsockopt = sock_no_setsockopt, - .getsockopt = sock_no_getsockopt, .sendmsg = packet_sendmsg_spkt, .recvmsg = packet_recvmsg, .mmap = sock_no_mmap,
diff --git a/net/phonet/socket.c b/net/phonet/socket.c
index 87c60f83c18061..2599235d592e0b 100644
--- a/net/phonet/socket.c
+++ b/net/phonet/socket.c@@ -439,8 +439,6 @@ const struct proto_ops phonet_dgram_ops = { .ioctl = pn_socket_ioctl, .listen = sock_no_listen, .shutdown = sock_no_shutdown, - .setsockopt = sock_no_setsockopt, - .getsockopt = sock_no_getsockopt, .sendmsg = pn_socket_sendmsg, .recvmsg = sock_common_recvmsg, .mmap = sock_no_mmap,
diff --git a/net/qrtr/qrtr.c b/net/qrtr/qrtr.c
index 24a8c3c6da0dca..0cb4adfc6641da 100644
--- a/net/qrtr/qrtr.c
+++ b/net/qrtr/qrtr.c@@ -1208,8 +1208,6 @@ static const struct proto_ops qrtr_proto_ops = { .gettstamp = sock_gettstamp, .poll = datagram_poll, .shutdown = sock_no_shutdown, - .setsockopt = sock_no_setsockopt, - .getsockopt = sock_no_getsockopt, .release = qrtr_release, .mmap = sock_no_mmap, .sendpage = sock_no_sendpage,
diff --git a/net/smc/af_smc.c b/net/smc/af_smc.c
index 9033215438384b..9711c9e0e515bf 100644
--- a/net/smc/af_smc.c
+++ b/net/smc/af_smc.c@@ -1742,8 +1742,11 @@ static int smc_setsockopt(struct socket *sock, int level, int optname, /* generic setsockopts reaching us here always apply to the * CLC socket */ - rc = smc->clcsock->ops->setsockopt(smc->clcsock, level, optname, - optval, optlen); + if (unlikely(!smc->clcsock->ops->setsockopt)) + rc = -EOPNOTSUPP; + else + rc = smc->clcsock->ops->setsockopt(smc->clcsock, level, optname, + optval, optlen); if (smc->clcsock->sk->sk_err) { sk->sk_err = smc->clcsock->sk->sk_err; sk->sk_error_report(sk);
@@ -1808,6 +1811,8 @@ static int smc_getsockopt(struct socket *sock, int level, int optname, smc = smc_sk(sock->sk); /* socket options apply to the CLC socket */ + if (unlikely(!smc->clcsock->ops->getsockopt)) + return -EOPNOTSUPP; return smc->clcsock->ops->getsockopt(smc->clcsock, level, optname, optval, optlen); }
diff --git a/net/socket.c b/net/socket.c
index dec345982abbb6..93846568c2fb7a 100644
--- a/net/socket.c
+++ b/net/socket.c@@ -2131,6 +2131,8 @@ 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); + else if (unlikely(!sock->ops->setsockopt)) + err = -EOPNOTSUPP; else err = sock->ops->setsockopt(sock, level, optname, optval, optlen);
@@ -2175,6 +2177,8 @@ int __sys_getsockopt(int fd, int level, int optname, char __user *optval, if (level == SOL_SOCKET) err = sock_getsockopt(sock, level, optname, optval, optlen); + else if (unlikely(!sock->ops->getsockopt)) + err = -EOPNOTSUPP; else err = sock->ops->getsockopt(sock, level, optname, optval, optlen);
diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index 3385a7a0b23133..181ea6fb56a617 100644
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c@@ -714,8 +714,6 @@ static const struct proto_ops unix_stream_ops = { #endif .listen = unix_listen, .shutdown = unix_shutdown, - .setsockopt = sock_no_setsockopt, - .getsockopt = sock_no_getsockopt, .sendmsg = unix_stream_sendmsg, .recvmsg = unix_stream_recvmsg, .mmap = sock_no_mmap,
@@ -741,8 +739,6 @@ static const struct proto_ops unix_dgram_ops = { #endif .listen = sock_no_listen, .shutdown = unix_shutdown, - .setsockopt = sock_no_setsockopt, - .getsockopt = sock_no_getsockopt, .sendmsg = unix_dgram_sendmsg, .recvmsg = unix_dgram_recvmsg, .mmap = sock_no_mmap,
@@ -767,8 +763,6 @@ static const struct proto_ops unix_seqpacket_ops = { #endif .listen = unix_listen, .shutdown = unix_shutdown, - .setsockopt = sock_no_setsockopt, - .getsockopt = sock_no_getsockopt, .sendmsg = unix_seqpacket_sendmsg, .recvmsg = unix_seqpacket_recvmsg, .mmap = sock_no_mmap,
diff --git a/net/vmw_vsock/af_vsock.c b/net/vmw_vsock/af_vsock.c
index 626bf9044418cc..df204c6761c453 100644
--- a/net/vmw_vsock/af_vsock.c
+++ b/net/vmw_vsock/af_vsock.c@@ -1202,8 +1202,6 @@ static const struct proto_ops vsock_dgram_ops = { .ioctl = sock_no_ioctl, .listen = sock_no_listen, .shutdown = vsock_shutdown, - .setsockopt = sock_no_setsockopt, - .getsockopt = sock_no_getsockopt, .sendmsg = vsock_dgram_sendmsg, .recvmsg = vsock_dgram_recvmsg, .mmap = sock_no_mmap,
--
2.27.0