Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751985Ab2BTC1Q (ORCPT ); Sun, 19 Feb 2012 21:27:16 -0500 Received: from terminus.zytor.com ([198.137.202.10]:58127 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751763Ab2BTC1M (ORCPT ); Sun, 19 Feb 2012 21:27:12 -0500 From: "H. Peter Anvin" To: linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org Cc: mingo@kernel.org, tglx@linutronix.de, torvalds@linux-foundation.org, akpm@linux-foundation.org, davem@davemloft.net, hjl.tools@gmail.com, Arnd Bergmann , Greg Kroah-Hartman , "H. Peter Anvin" Subject: [PATCH 6/7] compat: Use COMPAT_USE_64BIT_TIME in net/compat.c Date: Sun, 19 Feb 2012 18:22:49 -0800 Message-Id: <1329704570-3792-7-git-send-email-hpa@zytor.com> X-Mailer: git-send-email 1.7.6.5 In-Reply-To: <1329704570-3792-1-git-send-email-hpa@zytor.com> References: <1329704570-3792-1-git-send-email-hpa@zytor.com> X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.2.6 (terminus.zytor.com [127.0.0.1]); Sun, 19 Feb 2012 18:27:02 -0800 (PST) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 4134 Lines: 127 From: "H. J. Lu" Handle 64-bit time structures in the networking core compat code. Signed-off-by: H. Peter Anvin Cc: David S. Miller --- net/compat.c | 65 +++++++++++++++++++++++++++++++++++---------------------- 1 files changed, 40 insertions(+), 25 deletions(-) diff --git a/net/compat.c b/net/compat.c index 6def90e..73bf0e0 100644 --- a/net/compat.c +++ b/net/compat.c @@ -219,8 +219,6 @@ Efault: int put_cmsg_compat(struct msghdr *kmsg, int level, int type, int len, void *data) { - struct compat_timeval ctv; - struct compat_timespec cts[3]; struct compat_cmsghdr __user *cm = (struct compat_cmsghdr __user *) kmsg->msg_control; struct compat_cmsghdr cmhdr; int cmlen; @@ -230,24 +228,28 @@ int put_cmsg_compat(struct msghdr *kmsg, int level, int type, int len, void *dat return 0; /* XXX: return error? check spec. */ } - if (level == SOL_SOCKET && type == SCM_TIMESTAMP) { - struct timeval *tv = (struct timeval *)data; - ctv.tv_sec = tv->tv_sec; - ctv.tv_usec = tv->tv_usec; - data = &ctv; - len = sizeof(ctv); - } - if (level == SOL_SOCKET && - (type == SCM_TIMESTAMPNS || type == SCM_TIMESTAMPING)) { - int count = type == SCM_TIMESTAMPNS ? 1 : 3; - int i; - struct timespec *ts = (struct timespec *)data; - for (i = 0; i < count; i++) { - cts[i].tv_sec = ts[i].tv_sec; - cts[i].tv_nsec = ts[i].tv_nsec; + if (!COMPAT_USE_64BIT_TIME) { + struct compat_timeval ctv; + struct compat_timespec cts[3]; + if (level == SOL_SOCKET && type == SCM_TIMESTAMP) { + struct timeval *tv = (struct timeval *)data; + ctv.tv_sec = tv->tv_sec; + ctv.tv_usec = tv->tv_usec; + data = &ctv; + len = sizeof(ctv); + } + if (level == SOL_SOCKET && + (type == SCM_TIMESTAMPNS || type == SCM_TIMESTAMPING)) { + int count = type == SCM_TIMESTAMPNS ? 1 : 3; + int i; + struct timespec *ts = (struct timespec *)data; + for (i = 0; i < count; i++) { + cts[i].tv_sec = ts[i].tv_sec; + cts[i].tv_nsec = ts[i].tv_nsec; + } + data = &cts; + len = sizeof(cts[0]) * count; } - data = &cts; - len = sizeof(cts[0]) * count; } cmlen = CMSG_COMPAT_LEN(len); @@ -454,11 +456,15 @@ static int compat_sock_getsockopt(struct socket *sock, int level, int optname, int compat_sock_get_timestamp(struct sock *sk, struct timeval __user *userstamp) { - struct compat_timeval __user *ctv = - (struct compat_timeval __user *) userstamp; - int err = -ENOENT; + struct compat_timeval __user *ctv; + int err; struct timeval tv; + if (COMPAT_USE_64BIT_TIME) + return sock_get_timestamp(sk, userstamp); + + ctv = (struct compat_timeval __user *) userstamp; + err = -ENOENT; if (!sock_flag(sk, SOCK_TIMESTAMP)) sock_enable_timestamp(sk, SOCK_TIMESTAMP); tv = ktime_to_timeval(sk->sk_stamp); @@ -478,11 +484,15 @@ EXPORT_SYMBOL(compat_sock_get_timestamp); int compat_sock_get_timestampns(struct sock *sk, struct timespec __user *userstamp) { - struct compat_timespec __user *ctv = - (struct compat_timespec __user *) userstamp; - int err = -ENOENT; + struct compat_timespec __user *ctv; + int err; struct timespec ts; + if (COMPAT_USE_64BIT_TIME) + return sock_get_timestampns (sk, userstamp); + + ctv = (struct compat_timespec __user *) userstamp; + err = -ENOENT; if (!sock_flag(sk, SOCK_TIMESTAMP)) sock_enable_timestamp(sk, SOCK_TIMESTAMP); ts = ktime_to_timespec(sk->sk_stamp); @@ -767,6 +777,11 @@ asmlinkage long compat_sys_recvmmsg(int fd, struct compat_mmsghdr __user *mmsg, int datagrams; struct timespec ktspec; + if (COMPAT_USE_64BIT_TIME) + return __sys_recvmmsg(fd, (struct mmsghdr __user *)mmsg, vlen, + flags | MSG_CMSG_COMPAT, + (struct timespec *) timeout); + if (timeout == NULL) return __sys_recvmmsg(fd, (struct mmsghdr __user *)mmsg, vlen, flags | MSG_CMSG_COMPAT, NULL); -- 1.7.6.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/