From patchwork Thu Jul 23 06:08:59 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 11679985 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 C5363722 for ; Thu, 23 Jul 2020 06:11:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AD325206C1 for ; Thu, 23 Jul 2020 06:11:19 +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="IgVGLyqC" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726947AbgGWGJx (ORCPT ); Thu, 23 Jul 2020 02:09:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56508 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726893AbgGWGJr (ORCPT ); Thu, 23 Jul 2020 02:09:47 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 808EDC0619E2; Wed, 22 Jul 2020 23:09:47 -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=QrqaYh4fSMgupA4iEFhXoiD4XEjtKBO+4D3VptAqYus=; b=IgVGLyqCozX/nHw3MIQ3FpanQV jLXIw5Td5nt6zIvvCqGUnFabfrveTd++UbO9scS2aRy/PoKQeztwbLyv6jvpJEEtyLYhY/m6rTBL6 xKVVcTbM5bzajlkFK+OMU/FCH/VUQb3QOSfT60/o0JP8TjPIteycrNbr+PR78U+fooJ7APKnL+yYS LnZShKyk4tzuP+1iFVKpCOrQNDU1b9MW81GHnHJhLWwat6fM0aDFsEEbWZC8tBP1kpjEiRUmCTv9j fB/bPDia78CQ2+QlSJR5h2YA0Ym1SepAIfAmUqUk8+ueyWBGAtskROW4abUO80BOV+yb8+9iuyose 7pSKeTKQ==; 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 1jyUQ9-0003n1-PK; Thu, 23 Jul 2020 06:09:34 +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 17/26] net/ipv6: switch ip6_mroute_setsockopt to sockptr_t Date: Thu, 23 Jul 2020 08:08:59 +0200 Message-Id: <20200723060908.50081-18-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-wpan-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wpan@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 --- 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 #include #include +#include #include #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();