From patchwork Thu Jul 23 06:09:03 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 11679997 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 7A8EB722 for ; Thu, 23 Jul 2020 06:11:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 55AFA208E4 for ; Thu, 23 Jul 2020 06:11:31 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="QX5kiNG9" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726317AbgGWGLX (ORCPT ); Thu, 23 Jul 2020 02:11:23 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56530 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727048AbgGWGJw (ORCPT ); Thu, 23 Jul 2020 02:09:52 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E8380C0619E2; Wed, 22 Jul 2020 23:09:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=GQn0sG9CSctd3r9tXWfKFi/perePeGXKxZIJGtFsY+Q=; b=QX5kiNG9Mwf67jSYnc8F3JQRuj eD5Jx3XocBRQdOwUIvmulA1hMowdYmmsUZnlu3lCF7Y6mibi44Y4iDm4Zi7BOrQA6e86Pj+JHpy8/ I6Mes3/vFGcEWZxIX8zdXJ+R38hmzbfD3PVIDhM9ohhK4YQo+mcf+zDCdHvKXG5lyVxlKNw+al3kb siGjFJH0RvHtOFMdBa2rF5n8Tw+Smc04NJFYwA2Pb3LYk1X9InpguI9jkCIWFJuFZSHECQ6AaAkU2 lg/BxDDv30z3HCW4Grph5mBkzmMBR0eM0vYsJEzLIwWHzG8ep5/ecDlliCWVgjFAqGMqHjwYFaUjr LRdbOWgQ==; Received: from [2001:4bb8:18c:2acc:91df:aae8:fa3b:de9c] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1jyUQF-0003oA-3l; Thu, 23 Jul 2020 06:09:39 +0000 From: Christoph Hellwig To: "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 Subject: [PATCH 21/26] net/ipv6: switch do_ipv6_setsockopt to sockptr_t Date: Thu, 23 Jul 2020 08:09:03 +0200 Message-Id: <20200723060908.50081-22-hch@lst.de> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200723060908.50081-1-hch@lst.de> References: <20200723060908.50081-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-bluetooth-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org Pass a sockptr_t to prepare for set_fs-less handling of the kernel pointer from bpf-cgroup. Signed-off-by: Christoph Hellwig --- net/ipv6/ipv6_sockglue.c | 66 ++++++++++++++++++++-------------------- 1 file changed, 33 insertions(+), 33 deletions(-) diff --git a/net/ipv6/ipv6_sockglue.c b/net/ipv6/ipv6_sockglue.c index 90442c8366dff2..dcd000a5a9b124 100644 --- a/net/ipv6/ipv6_sockglue.c +++ b/net/ipv6/ipv6_sockglue.c @@ -136,15 +136,15 @@ static bool setsockopt_needs_rtnl(int optname) return false; } -static int copy_group_source_from_user(struct group_source_req *greqs, - void __user *optval, int optlen) +static int copy_group_source_from_sockptr(struct group_source_req *greqs, + sockptr_t optval, int optlen) { if (in_compat_syscall()) { struct compat_group_source_req gr32; if (optlen < sizeof(gr32)) return -EINVAL; - if (copy_from_user(&gr32, optval, sizeof(gr32))) + if (copy_from_sockptr(&gr32, optval, sizeof(gr32))) return -EFAULT; greqs->gsr_interface = gr32.gsr_interface; greqs->gsr_group = gr32.gsr_group; @@ -152,7 +152,7 @@ static int copy_group_source_from_user(struct group_source_req *greqs, } else { if (optlen < sizeof(*greqs)) return -EINVAL; - if (copy_from_user(greqs, optval, sizeof(*greqs))) + if (copy_from_sockptr(greqs, optval, sizeof(*greqs))) return -EFAULT; } @@ -160,13 +160,13 @@ static int copy_group_source_from_user(struct group_source_req *greqs, } static int do_ipv6_mcast_group_source(struct sock *sk, int optname, - void __user *optval, int optlen) + sockptr_t optval, int optlen) { struct group_source_req greqs; int omode, add; int ret; - ret = copy_group_source_from_user(&greqs, optval, optlen); + ret = copy_group_source_from_sockptr(&greqs, optval, optlen); if (ret) return ret; @@ -200,7 +200,7 @@ static int do_ipv6_mcast_group_source(struct sock *sk, int optname, return ip6_mc_source(add, omode, sk, &greqs); } -static int ipv6_set_mcast_msfilter(struct sock *sk, void __user *optval, +static int ipv6_set_mcast_msfilter(struct sock *sk, sockptr_t optval, int optlen) { struct group_filter *gsf; @@ -211,7 +211,7 @@ static int ipv6_set_mcast_msfilter(struct sock *sk, void __user *optval, if (optlen > sysctl_optmem_max) return -ENOBUFS; - gsf = memdup_user(optval, optlen); + gsf = memdup_sockptr(optval, optlen); if (IS_ERR(gsf)) return PTR_ERR(gsf); @@ -231,7 +231,7 @@ static int ipv6_set_mcast_msfilter(struct sock *sk, void __user *optval, return ret; } -static int compat_ipv6_set_mcast_msfilter(struct sock *sk, void __user *optval, +static int compat_ipv6_set_mcast_msfilter(struct sock *sk, sockptr_t optval, int optlen) { const int size0 = offsetof(struct compat_group_filter, gf_slist); @@ -251,7 +251,7 @@ static int compat_ipv6_set_mcast_msfilter(struct sock *sk, void __user *optval, gf32 = p + 4; /* we want ->gf_group and ->gf_slist aligned */ ret = -EFAULT; - if (copy_from_user(gf32, optval, optlen)) + if (copy_from_sockptr(gf32, optval, optlen)) goto out_free_p; /* numsrc >= (4G-140)/128 overflow in 32 bits */ @@ -276,14 +276,14 @@ static int compat_ipv6_set_mcast_msfilter(struct sock *sk, void __user *optval, } static int ipv6_mcast_join_leave(struct sock *sk, int optname, - void __user *optval, int optlen) + sockptr_t optval, int optlen) { struct sockaddr_in6 *psin6; struct group_req greq; if (optlen < sizeof(greq)) return -EINVAL; - if (copy_from_user(&greq, optval, sizeof(greq))) + if (copy_from_sockptr(&greq, optval, sizeof(greq))) return -EFAULT; if (greq.gr_group.ss_family != AF_INET6) @@ -296,14 +296,14 @@ static int ipv6_mcast_join_leave(struct sock *sk, int optname, } static int compat_ipv6_mcast_join_leave(struct sock *sk, int optname, - void __user *optval, int optlen) + sockptr_t optval, int optlen) { struct compat_group_req gr32; struct sockaddr_in6 *psin6; if (optlen < sizeof(gr32)) return -EINVAL; - if (copy_from_user(&gr32, optval, sizeof(gr32))) + if (copy_from_sockptr(&gr32, optval, sizeof(gr32))) return -EFAULT; if (gr32.gr_group.ss_family != AF_INET6) @@ -315,7 +315,7 @@ static int compat_ipv6_mcast_join_leave(struct sock *sk, int optname, return ipv6_sock_mc_drop(sk, gr32.gr_interface, &psin6->sin6_addr); } -static int ipv6_set_opt_hdr(struct sock *sk, int optname, void __user *optval, +static int ipv6_set_opt_hdr(struct sock *sk, int optname, sockptr_t optval, int optlen) { struct ipv6_pinfo *np = inet6_sk(sk); @@ -332,14 +332,14 @@ static int ipv6_set_opt_hdr(struct sock *sk, int optname, void __user *optval, * length, per RFC3542. */ if (optlen > 0) { - if (!optval) + if (sockptr_is_null(optval)) return -EINVAL; if (optlen < sizeof(struct ipv6_opt_hdr) || optlen & 0x7 || optlen > 8 * 255) return -EINVAL; - new = memdup_user(optval, optlen); + new = memdup_sockptr(optval, optlen); if (IS_ERR(new)) return PTR_ERR(new); if (unlikely(ipv6_optlen(new) > optlen)) { @@ -390,7 +390,7 @@ static int ipv6_set_opt_hdr(struct sock *sk, int optname, void __user *optval, } static int do_ipv6_setsockopt(struct sock *sk, int level, int optname, - char __user *optval, unsigned int optlen) + sockptr_t optval, unsigned int optlen) { struct ipv6_pinfo *np = inet6_sk(sk); struct net *net = sock_net(sk); @@ -398,11 +398,11 @@ static int do_ipv6_setsockopt(struct sock *sk, int level, int optname, int retv = -ENOPROTOOPT; bool needs_rtnl = setsockopt_needs_rtnl(optname); - if (!optval) + if (sockptr_is_null(optval)) val = 0; else { if (optlen >= sizeof(int)) { - if (get_user(val, (int __user *) optval)) + if (copy_from_sockptr(&val, optval, sizeof(val))) return -EFAULT; } else val = 0; @@ -411,8 +411,7 @@ 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, USER_SOCKPTR(optval), - optlen); + return ip6_mroute_setsockopt(sk, optname, optval, optlen); if (needs_rtnl) rtnl_lock(); @@ -663,12 +662,13 @@ static int do_ipv6_setsockopt(struct sock *sk, int level, int optname, if (optlen == 0) goto e_inval; - else if (optlen < sizeof(struct in6_pktinfo) || !optval) + else if (optlen < sizeof(struct in6_pktinfo) || + sockptr_is_null(optval)) goto e_inval; - if (copy_from_user(&pkt, optval, sizeof(struct in6_pktinfo))) { - retv = -EFAULT; - break; + if (copy_from_sockptr(&pkt, optval, sizeof(pkt))) { + retv = -EFAULT; + break; } if (!sk_dev_equal_l3scope(sk, pkt.ipi6_ifindex)) goto e_inval; @@ -709,7 +709,7 @@ static int do_ipv6_setsockopt(struct sock *sk, int level, int optname, refcount_set(&opt->refcnt, 1); opt->tot_len = sizeof(*opt) + optlen; retv = -EFAULT; - if (copy_from_user(opt+1, optval, optlen)) + if (copy_from_sockptr(opt + 1, optval, optlen)) goto done; msg.msg_controllen = optlen; @@ -831,7 +831,7 @@ static int do_ipv6_setsockopt(struct sock *sk, int level, int optname, break; retv = -EFAULT; - if (copy_from_user(&mreq, optval, sizeof(struct ipv6_mreq))) + if (copy_from_sockptr(&mreq, optval, sizeof(struct ipv6_mreq))) break; if (optname == IPV6_ADD_MEMBERSHIP) @@ -849,7 +849,7 @@ static int do_ipv6_setsockopt(struct sock *sk, int level, int optname, goto e_inval; retv = -EFAULT; - if (copy_from_user(&mreq, optval, sizeof(struct ipv6_mreq))) + if (copy_from_sockptr(&mreq, optval, sizeof(struct ipv6_mreq))) break; if (optname == IPV6_JOIN_ANYCAST) @@ -929,15 +929,14 @@ static int do_ipv6_setsockopt(struct sock *sk, int level, int optname, retv = 0; break; case IPV6_FLOWLABEL_MGR: - retv = ipv6_flowlabel_opt(sk, USER_SOCKPTR(optval), optlen); + retv = ipv6_flowlabel_opt(sk, optval, optlen); break; case IPV6_IPSEC_POLICY: case IPV6_XFRM_POLICY: retv = -EPERM; if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) break; - retv = xfrm_user_policy(sk, optname, USER_SOCKPTR(optval), - optlen); + retv = xfrm_user_policy(sk, optname, optval, optlen); break; case IPV6_ADDR_PREFERENCES: @@ -992,7 +991,8 @@ int ipv6_setsockopt(struct sock *sk, int level, int optname, if (level != SOL_IPV6) return -ENOPROTOOPT; - err = do_ipv6_setsockopt(sk, level, optname, optval, optlen); + err = do_ipv6_setsockopt(sk, level, optname, USER_SOCKPTR(optval), + optlen); #ifdef CONFIG_NETFILTER /* we need to exclude all possible ENOPROTOOPTs except default case */ if (err == -ENOPROTOOPT && optname != IPV6_IPSEC_POLICY &&