From patchwork Thu Jul 23 06:08:51 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 11680047 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 8AD5213A4 for ; Thu, 23 Jul 2020 06:12:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 727DE206C1 for ; Thu, 23 Jul 2020 06:12:51 +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="BP2oJ8tm" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726791AbgGWGMo (ORCPT ); Thu, 23 Jul 2020 02:12:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56456 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726715AbgGWGJd (ORCPT ); Thu, 23 Jul 2020 02:09:33 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8741DC0619DC; Wed, 22 Jul 2020 23:09:33 -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=VrJsDbKvFjfbSXAuB6qr8lwEWZVDG/rFKzbYqdXTQsw=; b=BP2oJ8tmQCVBRqYWPgYFfXA/Y8 +UEX3HDqU2bE68GKhF4gxLgUh3K90E6HXjo3xxAu8f+fTE1u6uOwoflRlGluSprC0/tDh5CECAmXR ws4kYNpIyKMNwer1y8FRw1cD5icaCR8dVtbqxbspNg1AiGDVRQVlBv+UUby3a2Y1aglZB+CXzSwEN iNRgmgjn4qlBww0328UUAjaiq4EUtqFlaPlQspwfU+5HMPLcPYZNClmMAu25fdwhdHRVemjN0VGSo 5YIKCegLfUy/7d148BCjp248Ceg9Vjn8wg07F2omLkNve4wrisyahYpjR+3kjpLRDforAv1Kuolp0 9zjpLCpg==; 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 1jyUPx-0003l6-Tv; Thu, 23 Jul 2020 06:09:22 +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 09/26] net/xfrm: switch xfrm_user_policy to sockptr_t Date: Thu, 23 Jul 2020 08:08:51 +0200 Message-Id: <20200723060908.50081-10-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 --- include/net/xfrm.h | 8 +++++--- net/ipv4/ip_sockglue.c | 3 ++- net/ipv6/ipv6_sockglue.c | 3 ++- net/xfrm/xfrm_state.c | 6 +++--- 4 files changed, 12 insertions(+), 8 deletions(-) diff --git a/include/net/xfrm.h b/include/net/xfrm.h index f9e1fda82ddfc0..5e81868b574a73 100644 --- a/include/net/xfrm.h +++ b/include/net/xfrm.h @@ -15,6 +15,7 @@ #include #include #include +#include #include #include @@ -1609,10 +1610,11 @@ int xfrm6_find_1stfragopt(struct xfrm_state *x, struct sk_buff *skb, void xfrm6_local_rxpmtu(struct sk_buff *skb, u32 mtu); int xfrm4_udp_encap_rcv(struct sock *sk, struct sk_buff *skb); int xfrm6_udp_encap_rcv(struct sock *sk, struct sk_buff *skb); -int xfrm_user_policy(struct sock *sk, int optname, - u8 __user *optval, int optlen); +int xfrm_user_policy(struct sock *sk, int optname, sockptr_t optval, + int optlen); #else -static inline int xfrm_user_policy(struct sock *sk, int optname, u8 __user *optval, int optlen) +static inline int xfrm_user_policy(struct sock *sk, int optname, + sockptr_t optval, int optlen) { return -ENOPROTOOPT; } diff --git a/net/ipv4/ip_sockglue.c b/net/ipv4/ip_sockglue.c index a5ea02d7a183eb..da933f99b5d517 100644 --- a/net/ipv4/ip_sockglue.c +++ b/net/ipv4/ip_sockglue.c @@ -1322,7 +1322,8 @@ static int do_ip_setsockopt(struct sock *sk, int level, err = -EPERM; if (!ns_capable(sock_net(sk)->user_ns, CAP_NET_ADMIN)) break; - err = xfrm_user_policy(sk, optname, optval, optlen); + err = xfrm_user_policy(sk, optname, USER_SOCKPTR(optval), + optlen); break; case IP_TRANSPARENT: diff --git a/net/ipv6/ipv6_sockglue.c b/net/ipv6/ipv6_sockglue.c index add8f791229945..56a74707c61741 100644 --- a/net/ipv6/ipv6_sockglue.c +++ b/net/ipv6/ipv6_sockglue.c @@ -935,7 +935,8 @@ static int do_ipv6_setsockopt(struct sock *sk, int level, int optname, retv = -EPERM; if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) break; - retv = xfrm_user_policy(sk, optname, optval, optlen); + retv = xfrm_user_policy(sk, optname, USER_SOCKPTR(optval), + optlen); break; case IPV6_ADDR_PREFERENCES: diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c index 8be2d926acc21d..69520ad3d83bfb 100644 --- a/net/xfrm/xfrm_state.c +++ b/net/xfrm/xfrm_state.c @@ -2264,7 +2264,7 @@ static bool km_is_alive(const struct km_event *c) return is_alive; } -int xfrm_user_policy(struct sock *sk, int optname, u8 __user *optval, int optlen) +int xfrm_user_policy(struct sock *sk, int optname, sockptr_t optval, int optlen) { int err; u8 *data; @@ -2274,7 +2274,7 @@ int xfrm_user_policy(struct sock *sk, int optname, u8 __user *optval, int optlen if (in_compat_syscall()) return -EOPNOTSUPP; - if (!optval && !optlen) { + if (sockptr_is_null(optval) && !optlen) { xfrm_sk_policy_insert(sk, XFRM_POLICY_IN, NULL); xfrm_sk_policy_insert(sk, XFRM_POLICY_OUT, NULL); __sk_dst_reset(sk); @@ -2284,7 +2284,7 @@ int xfrm_user_policy(struct sock *sk, int optname, u8 __user *optval, int optlen if (optlen <= 0 || optlen > PAGE_SIZE) return -EMSGSIZE; - data = memdup_user(optval, optlen); + data = memdup_sockptr(optval, optlen); if (IS_ERR(data)) return PTR_ERR(data);