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[23.128.96.18]) by mx.google.com with ESMTP id l2si7410839eja.112.2020.07.20.07.20.29; Mon, 20 Jul 2020 07:21:13 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-bluetooth-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-bluetooth-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-bluetooth-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728517AbgGTOTs (ORCPT + 99 others); Mon, 20 Jul 2020 10:19:48 -0400 Received: from proxima.lasnet.de ([78.47.171.185]:47092 "EHLO proxima.lasnet.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725815AbgGTOTr (ORCPT ); Mon, 20 Jul 2020 10:19:47 -0400 Received: from localhost.localdomain (p200300e9d7371614ec13d59c95910a08.dip0.t-ipconnect.de [IPv6:2003:e9:d737:1614:ec13:d59c:9591:a08]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (No client certificate requested) (Authenticated sender: stefan@datenfreihafen.org) by proxima.lasnet.de (Postfix) with ESMTPSA id 2321BC0D06; Mon, 20 Jul 2020 16:19:38 +0200 (CEST) Subject: Re: [PATCH 24/24] net: pass a sockptr_t into ->setsockopt To: Christoph Hellwig , "David S. Miller" , Jakub Kicinski , Alexei Starovoitov , Daniel Borkmann , Alexey Kuznetsov , Hideaki YOSHIFUJI , Eric Dumazet 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 References: <20200720124737.118617-1-hch@lst.de> <20200720124737.118617-25-hch@lst.de> From: Stefan Schmidt Message-ID: Date: Mon, 20 Jul 2020 16:19:38 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.9.0 MIME-Version: 1.0 In-Reply-To: <20200720124737.118617-25-hch@lst.de> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-bluetooth-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org Hello. On 20.07.20 14:47, Christoph Hellwig wrote: > Rework the remaining setsockopt code to pass a sockptr_t instead of a > plain user pointer. This removes the last remaining set_fs(KERNEL_DS) > outside of architecture specific code. > > Signed-off-by: Christoph Hellwig > --- > crypto/af_alg.c | 7 ++-- > drivers/crypto/chelsio/chtls/chtls_main.c | 18 ++++++----- > drivers/isdn/mISDN/socket.c | 4 +-- > include/linux/net.h | 4 ++- > include/net/inet_connection_sock.h | 3 +- > include/net/ip.h | 2 +- > include/net/ipv6.h | 4 +-- > include/net/sctp/structs.h | 2 +- > include/net/sock.h | 4 +-- > include/net/tcp.h | 4 +-- > net/atm/common.c | 6 ++-- > net/atm/common.h | 2 +- > net/atm/pvc.c | 2 +- > net/atm/svc.c | 6 ++-- > net/ax25/af_ax25.c | 6 ++-- > net/bluetooth/hci_sock.c | 8 ++--- > net/bluetooth/l2cap_sock.c | 22 ++++++------- > net/bluetooth/rfcomm/sock.c | 12 ++++--- > net/bluetooth/sco.c | 6 ++-- > net/caif/caif_socket.c | 8 ++--- > net/can/j1939/socket.c | 12 +++---- > net/can/raw.c | 16 +++++----- > net/core/sock.c | 2 +- > net/dccp/dccp.h | 2 +- > net/dccp/proto.c | 20 ++++++------ > net/decnet/af_decnet.c | 16 ++++++---- > net/ieee802154/socket.c | 6 ++-- > net/ipv4/ip_sockglue.c | 13 +++----- > net/ipv4/raw.c | 8 ++--- > net/ipv4/tcp.c | 5 ++- > net/ipv4/udp.c | 6 ++-- > net/ipv4/udp_impl.h | 4 +-- > net/ipv6/ipv6_sockglue.c | 10 +++--- > net/ipv6/raw.c | 10 +++--- > net/ipv6/udp.c | 6 ++-- > net/ipv6/udp_impl.h | 4 +-- > net/iucv/af_iucv.c | 4 +-- > net/kcm/kcmsock.c | 6 ++-- > net/l2tp/l2tp_ppp.c | 4 +-- > net/llc/af_llc.c | 4 +-- > net/mptcp/protocol.c | 14 ++++---- > net/netlink/af_netlink.c | 4 +-- > net/netrom/af_netrom.c | 4 +-- > net/nfc/llcp_sock.c | 6 ++-- > net/packet/af_packet.c | 39 ++++++++++++----------- > net/phonet/pep.c | 4 +-- > net/rds/af_rds.c | 30 ++++++++--------- > net/rds/rdma.c | 14 ++++---- > net/rds/rds.h | 6 ++-- > net/rose/af_rose.c | 4 +-- > net/rxrpc/af_rxrpc.c | 8 ++--- > net/rxrpc/ar-internal.h | 4 +-- > net/rxrpc/key.c | 9 +++--- > net/sctp/socket.c | 4 +-- > net/smc/af_smc.c | 4 +-- > net/socket.c | 23 ++++--------- > net/tipc/socket.c | 8 ++--- > net/tls/tls_main.c | 17 +++++----- > net/vmw_vsock/af_vsock.c | 4 +-- > net/x25/af_x25.c | 4 +-- > net/xdp/xsk.c | 8 ++--- > 61 files changed, 248 insertions(+), 258 deletions(-) > > diff --git a/crypto/af_alg.c b/crypto/af_alg.c > index 29f71428520b4b..892242a42c3ec9 100644 > --- a/crypto/af_alg.c > +++ b/crypto/af_alg.c > @@ -197,8 +197,7 @@ static int alg_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) > return err; > } > > -static int alg_setkey(struct sock *sk, char __user *ukey, > - unsigned int keylen) > +static int alg_setkey(struct sock *sk, sockptr_t ukey, unsigned int keylen) > { > struct alg_sock *ask = alg_sk(sk); > const struct af_alg_type *type = ask->type; > @@ -210,7 +209,7 @@ static int alg_setkey(struct sock *sk, char __user *ukey, > return -ENOMEM; > > err = -EFAULT; > - if (copy_from_user(key, ukey, keylen)) > + if (copy_from_sockptr(key, ukey, keylen)) > goto out; > > err = type->setkey(ask->private, key, keylen); > @@ -222,7 +221,7 @@ static int alg_setkey(struct sock *sk, char __user *ukey, > } > > static int alg_setsockopt(struct socket *sock, int level, int optname, > - char __user *optval, unsigned int optlen) > + sockptr_t optval, unsigned int optlen) > { > struct sock *sk = sock->sk; > struct alg_sock *ask = alg_sk(sk); > diff --git a/drivers/crypto/chelsio/chtls/chtls_main.c b/drivers/crypto/chelsio/chtls/chtls_main.c > index d98b89d0fa6eeb..c3058dcdb33c5c 100644 > --- a/drivers/crypto/chelsio/chtls/chtls_main.c > +++ b/drivers/crypto/chelsio/chtls/chtls_main.c > @@ -488,7 +488,7 @@ static int chtls_getsockopt(struct sock *sk, int level, int optname, > } > > static int do_chtls_setsockopt(struct sock *sk, int optname, > - char __user *optval, unsigned int optlen) > + sockptr_t optval, unsigned int optlen) > { > struct tls_crypto_info *crypto_info, tmp_crypto_info; > struct chtls_sock *csk; > @@ -498,12 +498,12 @@ static int do_chtls_setsockopt(struct sock *sk, int optname, > > csk = rcu_dereference_sk_user_data(sk); > > - if (!optval || optlen < sizeof(*crypto_info)) { > + if (sockptr_is_null(optval) || optlen < sizeof(*crypto_info)) { > rc = -EINVAL; > goto out; > } > > - rc = copy_from_user(&tmp_crypto_info, optval, sizeof(*crypto_info)); > + rc = copy_from_sockptr(&tmp_crypto_info, optval, sizeof(*crypto_info)); > if (rc) { > rc = -EFAULT; > goto out; > @@ -525,8 +525,9 @@ static int do_chtls_setsockopt(struct sock *sk, int optname, > /* Obtain version and type from previous copy */ > crypto_info[0] = tmp_crypto_info; > /* Now copy the following data */ > - rc = copy_from_user((char *)crypto_info + sizeof(*crypto_info), > - optval + sizeof(*crypto_info), > + sockptr_advance(optval, sizeof(*crypto_info)); > + rc = copy_from_sockptr((char *)crypto_info + sizeof(*crypto_info), > + optval, > sizeof(struct tls12_crypto_info_aes_gcm_128) > - sizeof(*crypto_info)); > > @@ -541,8 +542,9 @@ static int do_chtls_setsockopt(struct sock *sk, int optname, > } > case TLS_CIPHER_AES_GCM_256: { > crypto_info[0] = tmp_crypto_info; > - rc = copy_from_user((char *)crypto_info + sizeof(*crypto_info), > - optval + sizeof(*crypto_info), > + sockptr_advance(optval, sizeof(*crypto_info)); > + rc = copy_from_sockptr((char *)crypto_info + sizeof(*crypto_info), > + optval, > sizeof(struct tls12_crypto_info_aes_gcm_256) > - sizeof(*crypto_info)); > > @@ -565,7 +567,7 @@ static int do_chtls_setsockopt(struct sock *sk, int optname, > } > > static int chtls_setsockopt(struct sock *sk, int level, int optname, > - char __user *optval, unsigned int optlen) > + sockptr_t optval, unsigned int optlen) > { > struct tls_context *ctx = tls_get_ctx(sk); > > diff --git a/drivers/isdn/mISDN/socket.c b/drivers/isdn/mISDN/socket.c > index 1b2b91479107bc..2835daae9e9f3a 100644 > --- a/drivers/isdn/mISDN/socket.c > +++ b/drivers/isdn/mISDN/socket.c > @@ -401,7 +401,7 @@ data_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) > } > > static int data_sock_setsockopt(struct socket *sock, int level, int optname, > - char __user *optval, unsigned int len) > + sockptr_t optval, unsigned int len) > { > struct sock *sk = sock->sk; > int err = 0, opt = 0; > @@ -414,7 +414,7 @@ static int data_sock_setsockopt(struct socket *sock, int level, int optname, > > switch (optname) { > case MISDN_TIME_STAMP: > - if (get_user(opt, (int __user *)optval)) { > + if (copy_from_sockptr(&opt, optval, sizeof(int))) { > err = -EFAULT; > break; > } > diff --git a/include/linux/net.h b/include/linux/net.h > index 858ff1d981540d..d48ff11808794c 100644 > --- a/include/linux/net.h > +++ b/include/linux/net.h > @@ -21,6 +21,7 @@ > #include > #include > #include > +#include > > #include > > @@ -162,7 +163,8 @@ struct proto_ops { > int (*listen) (struct socket *sock, int len); > int (*shutdown) (struct socket *sock, int flags); > int (*setsockopt)(struct socket *sock, int level, > - int optname, char __user *optval, unsigned int optlen); > + int optname, sockptr_t optval, > + unsigned int optlen); > int (*getsockopt)(struct socket *sock, int level, > int optname, char __user *optval, int __user *optlen); > void (*show_fdinfo)(struct seq_file *m, struct socket *sock); > diff --git a/include/net/inet_connection_sock.h b/include/net/inet_connection_sock.h > index 157c60cca0ca60..1e209ce7d1bd1b 100644 > --- a/include/net/inet_connection_sock.h > +++ b/include/net/inet_connection_sock.h > @@ -16,6 +16,7 @@ > #include > #include > #include > +#include > > #include > #include > @@ -45,7 +46,7 @@ struct inet_connection_sock_af_ops { > u16 net_frag_header_len; > u16 sockaddr_len; > int (*setsockopt)(struct sock *sk, int level, int optname, > - char __user *optval, unsigned int optlen); > + sockptr_t optval, unsigned int optlen); > int (*getsockopt)(struct sock *sk, int level, int optname, > char __user *optval, int __user *optlen); > void (*addr2sockaddr)(struct sock *sk, struct sockaddr *); > diff --git a/include/net/ip.h b/include/net/ip.h > index d66ad3a9522081..b09c48d862cc10 100644 > --- a/include/net/ip.h > +++ b/include/net/ip.h > @@ -722,7 +722,7 @@ void ip_cmsg_recv_offset(struct msghdr *msg, struct sock *sk, > struct sk_buff *skb, int tlen, int offset); > int ip_cmsg_send(struct sock *sk, struct msghdr *msg, > struct ipcm_cookie *ipc, bool allow_ipv6); > -int ip_setsockopt(struct sock *sk, int level, int optname, char __user *optval, > +int ip_setsockopt(struct sock *sk, int level, int optname, sockptr_t optval, > unsigned int optlen); > int ip_getsockopt(struct sock *sk, int level, int optname, char __user *optval, > int __user *optlen); > diff --git a/include/net/ipv6.h b/include/net/ipv6.h > index 4c9d89b5d73268..bd1f396cc9c729 100644 > --- a/include/net/ipv6.h > +++ b/include/net/ipv6.h > @@ -1084,8 +1084,8 @@ struct in6_addr *fl6_update_dst(struct flowi6 *fl6, > * socket options (ipv6_sockglue.c) > */ > > -int ipv6_setsockopt(struct sock *sk, int level, int optname, > - char __user *optval, unsigned int optlen); > +int ipv6_setsockopt(struct sock *sk, int level, int optname, sockptr_t optval, > + unsigned int optlen); > int ipv6_getsockopt(struct sock *sk, int level, int optname, > char __user *optval, int __user *optlen); > > diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h > index 233bbf7df5d66c..b33f1aefad0989 100644 > --- a/include/net/sctp/structs.h > +++ b/include/net/sctp/structs.h > @@ -431,7 +431,7 @@ struct sctp_af { > int (*setsockopt) (struct sock *sk, > int level, > int optname, > - char __user *optval, > + sockptr_t optval, > unsigned int optlen); > int (*getsockopt) (struct sock *sk, > int level, > diff --git a/include/net/sock.h b/include/net/sock.h > index bfb2fe2fc36876..2cc3ba667908de 100644 > --- a/include/net/sock.h > +++ b/include/net/sock.h > @@ -1141,7 +1141,7 @@ struct proto { > void (*destroy)(struct sock *sk); > void (*shutdown)(struct sock *sk, int how); > int (*setsockopt)(struct sock *sk, int level, > - int optname, char __user *optval, > + int optname, sockptr_t optval, > unsigned int optlen); > int (*getsockopt)(struct sock *sk, int level, > int optname, char __user *optval, > @@ -1734,7 +1734,7 @@ int sock_common_getsockopt(struct socket *sock, int level, int optname, > int sock_common_recvmsg(struct socket *sock, struct msghdr *msg, size_t size, > int flags); > int sock_common_setsockopt(struct socket *sock, int level, int optname, > - char __user *optval, unsigned int optlen); > + sockptr_t optval, unsigned int optlen); > > void sk_common_release(struct sock *sk); > > diff --git a/include/net/tcp.h b/include/net/tcp.h > index e3c8e1d820214c..e0c35d56091f22 100644 > --- a/include/net/tcp.h > +++ b/include/net/tcp.h > @@ -399,8 +399,8 @@ __poll_t tcp_poll(struct file *file, struct socket *sock, > struct poll_table_struct *wait); > int tcp_getsockopt(struct sock *sk, int level, int optname, > char __user *optval, int __user *optlen); > -int tcp_setsockopt(struct sock *sk, int level, int optname, > - char __user *optval, unsigned int optlen); > +int tcp_setsockopt(struct sock *sk, int level, int optname, sockptr_t optval, > + unsigned int optlen); > void tcp_set_keepalive(struct sock *sk, int val); > void tcp_syn_ack_timeout(const struct request_sock *req); > int tcp_recvmsg(struct sock *sk, struct msghdr *msg, size_t len, int nonblock, > diff --git a/net/atm/common.c b/net/atm/common.c > index 9b28f1fb3c69c8..84367b844b1473 100644 > --- a/net/atm/common.c > +++ b/net/atm/common.c > @@ -745,7 +745,7 @@ static int check_qos(const struct atm_qos *qos) > } > > int vcc_setsockopt(struct socket *sock, int level, int optname, > - char __user *optval, unsigned int optlen) > + sockptr_t optval, unsigned int optlen) > { > struct atm_vcc *vcc; > unsigned long value; > @@ -760,7 +760,7 @@ int vcc_setsockopt(struct socket *sock, int level, int optname, > { > struct atm_qos qos; > > - if (copy_from_user(&qos, optval, sizeof(qos))) > + if (copy_from_sockptr(&qos, optval, sizeof(qos))) > return -EFAULT; > error = check_qos(&qos); > if (error) > @@ -774,7 +774,7 @@ int vcc_setsockopt(struct socket *sock, int level, int optname, > return 0; > } > case SO_SETCLP: > - if (get_user(value, (unsigned long __user *)optval)) > + if (copy_from_sockptr(&value, optval, sizeof(value))) > return -EFAULT; > if (value) > vcc->atm_options |= ATM_ATMOPT_CLP; > diff --git a/net/atm/common.h b/net/atm/common.h > index 5850649068bb29..a1e56e8de698a3 100644 > --- a/net/atm/common.h > +++ b/net/atm/common.h > @@ -21,7 +21,7 @@ __poll_t vcc_poll(struct file *file, struct socket *sock, poll_table *wait); > int vcc_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg); > int vcc_compat_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg); > int vcc_setsockopt(struct socket *sock, int level, int optname, > - char __user *optval, unsigned int optlen); > + sockptr_t optval, unsigned int optlen); > int vcc_getsockopt(struct socket *sock, int level, int optname, > char __user *optval, int __user *optlen); > void vcc_process_recv_queue(struct atm_vcc *vcc); > diff --git a/net/atm/pvc.c b/net/atm/pvc.c > index 02bd2a436bdf9e..53e7d3f39e26cc 100644 > --- a/net/atm/pvc.c > +++ b/net/atm/pvc.c > @@ -63,7 +63,7 @@ static int pvc_connect(struct socket *sock, struct sockaddr *sockaddr, > } > > static int pvc_setsockopt(struct socket *sock, int level, int optname, > - char __user *optval, unsigned int optlen) > + sockptr_t optval, unsigned int optlen) > { > struct sock *sk = sock->sk; > int error; > diff --git a/net/atm/svc.c b/net/atm/svc.c > index ba144d035e3d41..4a02bcaad279f8 100644 > --- a/net/atm/svc.c > +++ b/net/atm/svc.c > @@ -451,7 +451,7 @@ int svc_change_qos(struct atm_vcc *vcc, struct atm_qos *qos) > } > > static int svc_setsockopt(struct socket *sock, int level, int optname, > - char __user *optval, unsigned int optlen) > + sockptr_t optval, unsigned int optlen) > { > struct sock *sk = sock->sk; > struct atm_vcc *vcc = ATM_SD(sock); > @@ -464,7 +464,7 @@ static int svc_setsockopt(struct socket *sock, int level, int optname, > error = -EINVAL; > goto out; > } > - if (copy_from_user(&vcc->sap, optval, optlen)) { > + if (copy_from_sockptr(&vcc->sap, optval, optlen)) { > error = -EFAULT; > goto out; > } > @@ -475,7 +475,7 @@ static int svc_setsockopt(struct socket *sock, int level, int optname, > error = -EINVAL; > goto out; > } > - if (get_user(value, (int __user *)optval)) { > + if (copy_from_sockptr(&value, optval, sizeof(int))) { > error = -EFAULT; > goto out; > } > diff --git a/net/ax25/af_ax25.c b/net/ax25/af_ax25.c > index fd91cd34f25e03..17bf31a8969284 100644 > --- a/net/ax25/af_ax25.c > +++ b/net/ax25/af_ax25.c > @@ -528,7 +528,7 @@ ax25_cb *ax25_create_cb(void) > */ > > static int ax25_setsockopt(struct socket *sock, int level, int optname, > - char __user *optval, unsigned int optlen) > + sockptr_t optval, unsigned int optlen) > { > struct sock *sk = sock->sk; > ax25_cb *ax25; > @@ -543,7 +543,7 @@ static int ax25_setsockopt(struct socket *sock, int level, int optname, > if (optlen < sizeof(unsigned int)) > return -EINVAL; > > - if (get_user(opt, (unsigned int __user *)optval)) > + if (copy_from_sockptr(&opt, optval, sizeof(unsigned int))) > return -EFAULT; > > lock_sock(sk); > @@ -640,7 +640,7 @@ static int ax25_setsockopt(struct socket *sock, int level, int optname, > > memset(devname, 0, sizeof(devname)); > > - if (copy_from_user(devname, optval, optlen)) { > + if (copy_from_sockptr(devname, optval, optlen)) { > res = -EFAULT; > break; > } > diff --git a/net/bluetooth/hci_sock.c b/net/bluetooth/hci_sock.c > index caf38a8ea6a8ba..d5eff27d5b1e17 100644 > --- a/net/bluetooth/hci_sock.c > +++ b/net/bluetooth/hci_sock.c > @@ -1842,7 +1842,7 @@ static int hci_sock_sendmsg(struct socket *sock, struct msghdr *msg, > } > > static int hci_sock_setsockopt(struct socket *sock, int level, int optname, > - char __user *optval, unsigned int len) > + sockptr_t optval, unsigned int len) > { > struct hci_ufilter uf = { .opcode = 0 }; > struct sock *sk = sock->sk; > @@ -1862,7 +1862,7 @@ static int hci_sock_setsockopt(struct socket *sock, int level, int optname, > > switch (optname) { > case HCI_DATA_DIR: > - if (get_user(opt, (int __user *)optval)) { > + if (copy_from_sockptr(&opt, optval, sizeof(opt))) { > err = -EFAULT; > break; > } > @@ -1874,7 +1874,7 @@ static int hci_sock_setsockopt(struct socket *sock, int level, int optname, > break; > > case HCI_TIME_STAMP: > - if (get_user(opt, (int __user *)optval)) { > + if (copy_from_sockptr(&opt, optval, sizeof(opt))) { > err = -EFAULT; > break; > } > @@ -1896,7 +1896,7 @@ static int hci_sock_setsockopt(struct socket *sock, int level, int optname, > } > > len = min_t(unsigned int, len, sizeof(uf)); > - if (copy_from_user(&uf, optval, len)) { > + if (copy_from_sockptr(&uf, optval, len)) { > err = -EFAULT; > break; > } > diff --git a/net/bluetooth/l2cap_sock.c b/net/bluetooth/l2cap_sock.c > index a995d2c51fa7f1..a3d104123f38dd 100644 > --- a/net/bluetooth/l2cap_sock.c > +++ b/net/bluetooth/l2cap_sock.c > @@ -703,7 +703,7 @@ static bool l2cap_valid_mtu(struct l2cap_chan *chan, u16 mtu) > } > > static int l2cap_sock_setsockopt_old(struct socket *sock, int optname, > - char __user *optval, unsigned int optlen) > + sockptr_t optval, unsigned int optlen) > { > struct sock *sk = sock->sk; > struct l2cap_chan *chan = l2cap_pi(sk)->chan; > @@ -736,7 +736,7 @@ static int l2cap_sock_setsockopt_old(struct socket *sock, int optname, > opts.txwin_size = chan->tx_win; > > len = min_t(unsigned int, sizeof(opts), optlen); > - if (copy_from_user((char *) &opts, optval, len)) { > + if (copy_from_sockptr(&opts, optval, len)) { > err = -EFAULT; > break; > } > @@ -782,7 +782,7 @@ static int l2cap_sock_setsockopt_old(struct socket *sock, int optname, > break; > > case L2CAP_LM: > - if (get_user(opt, (u32 __user *) optval)) { > + if (copy_from_sockptr(&opt, optval, sizeof(u32))) { > err = -EFAULT; > break; > } > @@ -859,7 +859,7 @@ static int l2cap_set_mode(struct l2cap_chan *chan, u8 mode) > } > > static int l2cap_sock_setsockopt(struct socket *sock, int level, int optname, > - char __user *optval, unsigned int optlen) > + sockptr_t optval, unsigned int optlen) > { > struct sock *sk = sock->sk; > struct l2cap_chan *chan = l2cap_pi(sk)->chan; > @@ -891,7 +891,7 @@ static int l2cap_sock_setsockopt(struct socket *sock, int level, int optname, > sec.level = BT_SECURITY_LOW; > > len = min_t(unsigned int, sizeof(sec), optlen); > - if (copy_from_user((char *) &sec, optval, len)) { > + if (copy_from_sockptr(&sec, optval, len)) { > err = -EFAULT; > break; > } > @@ -939,7 +939,7 @@ static int l2cap_sock_setsockopt(struct socket *sock, int level, int optname, > break; > } > > - if (get_user(opt, (u32 __user *) optval)) { > + if (copy_from_sockptr(&opt, optval, sizeof(u32))) { > err = -EFAULT; > break; > } > @@ -954,7 +954,7 @@ static int l2cap_sock_setsockopt(struct socket *sock, int level, int optname, > break; > > case BT_FLUSHABLE: > - if (get_user(opt, (u32 __user *) optval)) { > + if (copy_from_sockptr(&opt, optval, sizeof(u32))) { > err = -EFAULT; > break; > } > @@ -990,7 +990,7 @@ static int l2cap_sock_setsockopt(struct socket *sock, int level, int optname, > pwr.force_active = BT_POWER_FORCE_ACTIVE_ON; > > len = min_t(unsigned int, sizeof(pwr), optlen); > - if (copy_from_user((char *) &pwr, optval, len)) { > + if (copy_from_sockptr(&pwr, optval, len)) { > err = -EFAULT; > break; > } > @@ -1002,7 +1002,7 @@ static int l2cap_sock_setsockopt(struct socket *sock, int level, int optname, > break; > > case BT_CHANNEL_POLICY: > - if (get_user(opt, (u32 __user *) optval)) { > + if (copy_from_sockptr(&opt, optval, sizeof(u32))) { > err = -EFAULT; > break; > } > @@ -1050,7 +1050,7 @@ static int l2cap_sock_setsockopt(struct socket *sock, int level, int optname, > break; > } > > - if (get_user(opt, (u16 __user *) optval)) { > + if (copy_from_sockptr(&opt, optval, sizeof(u16))) { > err = -EFAULT; > break; > } > @@ -1081,7 +1081,7 @@ static int l2cap_sock_setsockopt(struct socket *sock, int level, int optname, > break; > } > > - if (get_user(opt, (u8 __user *) optval)) { > + if (copy_from_sockptr(&opt, optval, sizeof(u8))) { > err = -EFAULT; > break; > } > diff --git a/net/bluetooth/rfcomm/sock.c b/net/bluetooth/rfcomm/sock.c > index df14eebe80da8b..dba4ea0e1b0dc7 100644 > --- a/net/bluetooth/rfcomm/sock.c > +++ b/net/bluetooth/rfcomm/sock.c > @@ -644,7 +644,8 @@ static int rfcomm_sock_recvmsg(struct socket *sock, struct msghdr *msg, > return len; > } > > -static int rfcomm_sock_setsockopt_old(struct socket *sock, int optname, char __user *optval, unsigned int optlen) > +static int rfcomm_sock_setsockopt_old(struct socket *sock, int optname, > + sockptr_t optval, unsigned int optlen) > { > struct sock *sk = sock->sk; > int err = 0; > @@ -656,7 +657,7 @@ static int rfcomm_sock_setsockopt_old(struct socket *sock, int optname, char __u > > switch (optname) { > case RFCOMM_LM: > - if (get_user(opt, (u32 __user *) optval)) { > + if (copy_from_sockptr(&opt, optval, sizeof(u32))) { > err = -EFAULT; > break; > } > @@ -685,7 +686,8 @@ static int rfcomm_sock_setsockopt_old(struct socket *sock, int optname, char __u > return err; > } > > -static int rfcomm_sock_setsockopt(struct socket *sock, int level, int optname, char __user *optval, unsigned int optlen) > +static int rfcomm_sock_setsockopt(struct socket *sock, int level, int optname, > + sockptr_t optval, unsigned int optlen) > { > struct sock *sk = sock->sk; > struct bt_security sec; > @@ -713,7 +715,7 @@ static int rfcomm_sock_setsockopt(struct socket *sock, int level, int optname, c > sec.level = BT_SECURITY_LOW; > > len = min_t(unsigned int, sizeof(sec), optlen); > - if (copy_from_user((char *) &sec, optval, len)) { > + if (copy_from_sockptr(&sec, optval, len)) { > err = -EFAULT; > break; > } > @@ -732,7 +734,7 @@ static int rfcomm_sock_setsockopt(struct socket *sock, int level, int optname, c > break; > } > > - if (get_user(opt, (u32 __user *) optval)) { > + if (copy_from_sockptr(&opt, optval, sizeof(u32))) { > err = -EFAULT; > break; > } > diff --git a/net/bluetooth/sco.c b/net/bluetooth/sco.c > index c8c3d38cdc7b56..37260baf71507b 100644 > --- a/net/bluetooth/sco.c > +++ b/net/bluetooth/sco.c > @@ -791,7 +791,7 @@ static int sco_sock_recvmsg(struct socket *sock, struct msghdr *msg, > } > > static int sco_sock_setsockopt(struct socket *sock, int level, int optname, > - char __user *optval, unsigned int optlen) > + sockptr_t optval, unsigned int optlen) > { > struct sock *sk = sock->sk; > int len, err = 0; > @@ -810,7 +810,7 @@ static int sco_sock_setsockopt(struct socket *sock, int level, int optname, > break; > } > > - if (get_user(opt, (u32 __user *) optval)) { > + if (copy_from_sockptr(&opt, optval, sizeof(u32))) { > err = -EFAULT; > break; > } > @@ -831,7 +831,7 @@ static int sco_sock_setsockopt(struct socket *sock, int level, int optname, > voice.setting = sco_pi(sk)->setting; > > len = min_t(unsigned int, sizeof(voice), optlen); > - if (copy_from_user((char *)&voice, optval, len)) { > + if (copy_from_sockptr(&voice, optval, len)) { > err = -EFAULT; > break; > } > diff --git a/net/caif/caif_socket.c b/net/caif/caif_socket.c > index b94ecd931002e7..3ad0a1df671283 100644 > --- a/net/caif/caif_socket.c > +++ b/net/caif/caif_socket.c > @@ -669,8 +669,8 @@ static int caif_stream_sendmsg(struct socket *sock, struct msghdr *msg, > return sent ? : err; > } > > -static int setsockopt(struct socket *sock, > - int lvl, int opt, char __user *ov, unsigned int ol) > +static int setsockopt(struct socket *sock, int lvl, int opt, sockptr_t ov, > + unsigned int ol) > { > struct sock *sk = sock->sk; > struct caifsock *cf_sk = container_of(sk, struct caifsock, sk); > @@ -685,7 +685,7 @@ static int setsockopt(struct socket *sock, > return -EINVAL; > if (lvl != SOL_CAIF) > goto bad_sol; > - if (copy_from_user(&linksel, ov, sizeof(int))) > + if (copy_from_sockptr(&linksel, ov, sizeof(int))) > return -EINVAL; > lock_sock(&(cf_sk->sk)); > cf_sk->conn_req.link_selector = linksel; > @@ -699,7 +699,7 @@ static int setsockopt(struct socket *sock, > return -ENOPROTOOPT; > lock_sock(&(cf_sk->sk)); > if (ol > sizeof(cf_sk->conn_req.param.data) || > - copy_from_user(&cf_sk->conn_req.param.data, ov, ol)) { > + copy_from_sockptr(&cf_sk->conn_req.param.data, ov, ol)) { > release_sock(&cf_sk->sk); > return -EINVAL; > } > diff --git a/net/can/j1939/socket.c b/net/can/j1939/socket.c > index f7587428febdd2..78ff9b3f1d40c7 100644 > --- a/net/can/j1939/socket.c > +++ b/net/can/j1939/socket.c > @@ -627,14 +627,14 @@ static int j1939_sk_release(struct socket *sock) > return 0; > } > > -static int j1939_sk_setsockopt_flag(struct j1939_sock *jsk, char __user *optval, > +static int j1939_sk_setsockopt_flag(struct j1939_sock *jsk, sockptr_t optval, > unsigned int optlen, int flag) > { > int tmp; > > if (optlen != sizeof(tmp)) > return -EINVAL; > - if (copy_from_user(&tmp, optval, optlen)) > + if (copy_from_sockptr(&tmp, optval, optlen)) > return -EFAULT; > lock_sock(&jsk->sk); > if (tmp) > @@ -646,7 +646,7 @@ static int j1939_sk_setsockopt_flag(struct j1939_sock *jsk, char __user *optval, > } > > static int j1939_sk_setsockopt(struct socket *sock, int level, int optname, > - char __user *optval, unsigned int optlen) > + sockptr_t optval, unsigned int optlen) > { > struct sock *sk = sock->sk; > struct j1939_sock *jsk = j1939_sk(sk); > @@ -658,7 +658,7 @@ static int j1939_sk_setsockopt(struct socket *sock, int level, int optname, > > switch (optname) { > case SO_J1939_FILTER: > - if (optval) { > + if (!sockptr_is_null(optval)) { > struct j1939_filter *f; > int c; > > @@ -670,7 +670,7 @@ static int j1939_sk_setsockopt(struct socket *sock, int level, int optname, > return -EINVAL; > > count = optlen / sizeof(*filters); > - filters = memdup_user(optval, optlen); > + filters = memdup_sockptr(optval, optlen); > if (IS_ERR(filters)) > return PTR_ERR(filters); > > @@ -703,7 +703,7 @@ static int j1939_sk_setsockopt(struct socket *sock, int level, int optname, > case SO_J1939_SEND_PRIO: > if (optlen != sizeof(tmp)) > return -EINVAL; > - if (copy_from_user(&tmp, optval, optlen)) > + if (copy_from_sockptr(&tmp, optval, optlen)) > return -EFAULT; > if (tmp < 0 || tmp > 7) > return -EDOM; > diff --git a/net/can/raw.c b/net/can/raw.c > index 59c039d73c6d58..94a9405658dc61 100644 > --- a/net/can/raw.c > +++ b/net/can/raw.c > @@ -485,7 +485,7 @@ static int raw_getname(struct socket *sock, struct sockaddr *uaddr, > } > > static int raw_setsockopt(struct socket *sock, int level, int optname, > - char __user *optval, unsigned int optlen) > + sockptr_t optval, unsigned int optlen) > { > struct sock *sk = sock->sk; > struct raw_sock *ro = raw_sk(sk); > @@ -511,11 +511,11 @@ static int raw_setsockopt(struct socket *sock, int level, int optname, > > if (count > 1) { > /* filter does not fit into dfilter => alloc space */ > - filter = memdup_user(optval, optlen); > + filter = memdup_sockptr(optval, optlen); > if (IS_ERR(filter)) > return PTR_ERR(filter); > } else if (count == 1) { > - if (copy_from_user(&sfilter, optval, sizeof(sfilter))) > + if (copy_from_sockptr(&sfilter, optval, sizeof(sfilter))) > return -EFAULT; > } > > @@ -568,7 +568,7 @@ static int raw_setsockopt(struct socket *sock, int level, int optname, > if (optlen != sizeof(err_mask)) > return -EINVAL; > > - if (copy_from_user(&err_mask, optval, optlen)) > + if (copy_from_sockptr(&err_mask, optval, optlen)) > return -EFAULT; > > err_mask &= CAN_ERR_MASK; > @@ -607,7 +607,7 @@ static int raw_setsockopt(struct socket *sock, int level, int optname, > if (optlen != sizeof(ro->loopback)) > return -EINVAL; > > - if (copy_from_user(&ro->loopback, optval, optlen)) > + if (copy_from_sockptr(&ro->loopback, optval, optlen)) > return -EFAULT; > > break; > @@ -616,7 +616,7 @@ static int raw_setsockopt(struct socket *sock, int level, int optname, > if (optlen != sizeof(ro->recv_own_msgs)) > return -EINVAL; > > - if (copy_from_user(&ro->recv_own_msgs, optval, optlen)) > + if (copy_from_sockptr(&ro->recv_own_msgs, optval, optlen)) > return -EFAULT; > > break; > @@ -625,7 +625,7 @@ static int raw_setsockopt(struct socket *sock, int level, int optname, > if (optlen != sizeof(ro->fd_frames)) > return -EINVAL; > > - if (copy_from_user(&ro->fd_frames, optval, optlen)) > + if (copy_from_sockptr(&ro->fd_frames, optval, optlen)) > return -EFAULT; > > break; > @@ -634,7 +634,7 @@ static int raw_setsockopt(struct socket *sock, int level, int optname, > if (optlen != sizeof(ro->join_filters)) > return -EINVAL; > > - if (copy_from_user(&ro->join_filters, optval, optlen)) > + if (copy_from_sockptr(&ro->join_filters, optval, optlen)) > return -EFAULT; > > break; > diff --git a/net/core/sock.c b/net/core/sock.c > index 9cf8318bc51de4..ff22629f10ce92 100644 > --- a/net/core/sock.c > +++ b/net/core/sock.c > @@ -3210,7 +3210,7 @@ EXPORT_SYMBOL(sock_common_recvmsg); > * Set socket options on an inet socket. > */ > int sock_common_setsockopt(struct socket *sock, int level, int optname, > - char __user *optval, unsigned int optlen) > + sockptr_t optval, unsigned int optlen) > { > struct sock *sk = sock->sk; > > diff --git a/net/dccp/dccp.h b/net/dccp/dccp.h > index 434eea91b7679d..9cc9d1ee6cdb9a 100644 > --- a/net/dccp/dccp.h > +++ b/net/dccp/dccp.h > @@ -295,7 +295,7 @@ int dccp_disconnect(struct sock *sk, int flags); > int dccp_getsockopt(struct sock *sk, int level, int optname, > char __user *optval, int __user *optlen); > int dccp_setsockopt(struct sock *sk, int level, int optname, > - char __user *optval, unsigned int optlen); > + sockptr_t optval, unsigned int optlen); > int dccp_ioctl(struct sock *sk, int cmd, unsigned long arg); > int dccp_sendmsg(struct sock *sk, struct msghdr *msg, size_t size); > int dccp_recvmsg(struct sock *sk, struct msghdr *msg, size_t len, int nonblock, > diff --git a/net/dccp/proto.c b/net/dccp/proto.c > index fd92d3fe321f08..9e58787047f197 100644 > --- a/net/dccp/proto.c > +++ b/net/dccp/proto.c > @@ -402,7 +402,7 @@ int dccp_ioctl(struct sock *sk, int cmd, unsigned long arg) > EXPORT_SYMBOL_GPL(dccp_ioctl); > > static int dccp_setsockopt_service(struct sock *sk, const __be32 service, > - char __user *optval, unsigned int optlen) > + sockptr_t optval, unsigned int optlen) > { > struct dccp_sock *dp = dccp_sk(sk); > struct dccp_service_list *sl = NULL; > @@ -417,9 +417,9 @@ static int dccp_setsockopt_service(struct sock *sk, const __be32 service, > return -ENOMEM; > > sl->dccpsl_nr = optlen / sizeof(u32) - 1; > - if (copy_from_user(sl->dccpsl_list, > - optval + sizeof(service), > - optlen - sizeof(service)) || > + sockptr_advance(optval, sizeof(service)); > + if (copy_from_sockptr(sl->dccpsl_list, optval, > + optlen - sizeof(service)) || > dccp_list_has_service(sl, DCCP_SERVICE_INVALID_VALUE)) { > kfree(sl); > return -EFAULT; > @@ -473,7 +473,7 @@ static int dccp_setsockopt_cscov(struct sock *sk, int cscov, bool rx) > } > > static int dccp_setsockopt_ccid(struct sock *sk, int type, > - char __user *optval, unsigned int optlen) > + sockptr_t optval, unsigned int optlen) > { > u8 *val; > int rc = 0; > @@ -481,7 +481,7 @@ static int dccp_setsockopt_ccid(struct sock *sk, int type, > if (optlen < 1 || optlen > DCCP_FEAT_MAX_SP_VALS) > return -EINVAL; > > - val = memdup_user(optval, optlen); > + val = memdup_sockptr(optval, optlen); > if (IS_ERR(val)) > return PTR_ERR(val); > > @@ -498,7 +498,7 @@ static int dccp_setsockopt_ccid(struct sock *sk, int type, > } > > static int do_dccp_setsockopt(struct sock *sk, int level, int optname, > - char __user *optval, unsigned int optlen) > + sockptr_t optval, unsigned int optlen) > { > struct dccp_sock *dp = dccp_sk(sk); > int val, err = 0; > @@ -520,7 +520,7 @@ static int do_dccp_setsockopt(struct sock *sk, int level, int optname, > if (optlen < (int)sizeof(int)) > return -EINVAL; > > - if (get_user(val, (int __user *)optval)) > + if (copy_from_sockptr(&val, optval, sizeof(int))) > return -EFAULT; > > if (optname == DCCP_SOCKOPT_SERVICE) > @@ -563,8 +563,8 @@ static int do_dccp_setsockopt(struct sock *sk, int level, int optname, > return err; > } > > -int dccp_setsockopt(struct sock *sk, int level, int optname, > - char __user *optval, unsigned int optlen) > +int dccp_setsockopt(struct sock *sk, int level, int optname, sockptr_t optval, > + unsigned int optlen) > { > if (level != SOL_DCCP) > return inet_csk(sk)->icsk_af_ops->setsockopt(sk, level, > diff --git a/net/decnet/af_decnet.c b/net/decnet/af_decnet.c > index 7d51ab608fb3f1..3b53d766789d47 100644 > --- a/net/decnet/af_decnet.c > +++ b/net/decnet/af_decnet.c > @@ -150,7 +150,8 @@ static struct hlist_head dn_sk_hash[DN_SK_HASH_SIZE]; > static struct hlist_head dn_wild_sk; > static atomic_long_t decnet_memory_allocated; > > -static int __dn_setsockopt(struct socket *sock, int level, int optname, char __user *optval, unsigned int optlen, int flags); > +static int __dn_setsockopt(struct socket *sock, int level, int optname, > + sockptr_t optval, unsigned int optlen, int flags); > static int __dn_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen, int flags); > > static struct hlist_head *dn_find_list(struct sock *sk) > @@ -1320,7 +1321,8 @@ static int dn_shutdown(struct socket *sock, int how) > return err; > } > > -static int dn_setsockopt(struct socket *sock, int level, int optname, char __user *optval, unsigned int optlen) > +static int dn_setsockopt(struct socket *sock, int level, int optname, > + sockptr_t optval, unsigned int optlen) > { > struct sock *sk = sock->sk; > int err; > @@ -1332,14 +1334,14 @@ static int dn_setsockopt(struct socket *sock, int level, int optname, char __use > /* we need to exclude all possible ENOPROTOOPTs except default case */ > if (err == -ENOPROTOOPT && optname != DSO_LINKINFO && > optname != DSO_STREAM && optname != DSO_SEQPACKET) > - err = nf_setsockopt(sk, PF_DECnet, optname, > - USER_SOCKPTR(optval), optlen); > + err = nf_setsockopt(sk, PF_DECnet, optname, optval, optlen); > #endif > > return err; > } > > -static int __dn_setsockopt(struct socket *sock, int level,int optname, char __user *optval, unsigned int optlen, int flags) > +static int __dn_setsockopt(struct socket *sock, int level, int optname, > + sockptr_t optval, unsigned int optlen, int flags) > { > struct sock *sk = sock->sk; > struct dn_scp *scp = DN_SK(sk); > @@ -1355,13 +1357,13 @@ static int __dn_setsockopt(struct socket *sock, int level,int optname, char __us > } u; > int err; > > - if (optlen && !optval) > + if (optlen && sockptr_is_null(optval)) > return -EINVAL; > > if (optlen > sizeof(u)) > return -EINVAL; > > - if (copy_from_user(&u, optval, optlen)) > + if (copy_from_sockptr(&u, optval, optlen)) > return -EFAULT; > > switch (optname) { > diff --git a/net/ieee802154/socket.c b/net/ieee802154/socket.c > index 94ae9662133e30..a45a0401adc50b 100644 > --- a/net/ieee802154/socket.c > +++ b/net/ieee802154/socket.c > @@ -382,7 +382,7 @@ static int raw_getsockopt(struct sock *sk, int level, int optname, > } > > static int raw_setsockopt(struct sock *sk, int level, int optname, > - char __user *optval, unsigned int optlen) > + sockptr_t optval, unsigned int optlen) > { > return -EOPNOTSUPP; > } > @@ -872,7 +872,7 @@ static int dgram_getsockopt(struct sock *sk, int level, int optname, > } > > static int dgram_setsockopt(struct sock *sk, int level, int optname, > - char __user *optval, unsigned int optlen) > + sockptr_t optval, unsigned int optlen) > { > struct dgram_sock *ro = dgram_sk(sk); > struct net *net = sock_net(sk); > @@ -882,7 +882,7 @@ static int dgram_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(int))) > return -EFAULT; > For the ieee802154 part: Acked-by: Stefan Schmidt regards Stefan Schmidt