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Message-ID: <20091210065815.GA4144@osiris.boeblingen.de.ibm.com>
Date: Thu, 10 Dec 2009 07:58:16 +0100
From: Heiko Carstens <heiko.carstens@...ibm.com>
To: David Miller <davem@...emloft.net>
Cc: Arnaldo Carvalho de Melo <acme@...hat.com>,
linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: [PATCH 1/2] net: fix compat_sys_recvmmsg parameter type
From: Heiko Carstens <heiko.carstens@...ibm.com>
compat_sys_recvmmsg has a compat_timespec parameter and not a
timespec parameter. This way we also get rid of an odd cast.
Cc: Arnaldo Carvalho de Melo <acme@...hat.com>
Signed-off-by: Heiko Carstens <heiko.carstens@...ibm.com>
---
include/net/compat.h | 2 +-
net/compat.c | 12 +++++-------
2 files changed, 6 insertions(+), 8 deletions(-)
Index: linux-2.6/include/net/compat.h
===================================================================
--- linux-2.6.orig/include/net/compat.h
+++ linux-2.6/include/net/compat.h
@@ -46,7 +46,7 @@ extern asmlinkage long compat_sys_sendms
extern asmlinkage long compat_sys_recvmsg(int,struct compat_msghdr __user *,unsigned);
extern asmlinkage long compat_sys_recvmmsg(int, struct compat_mmsghdr __user *,
unsigned, unsigned,
- struct timespec __user *);
+ struct compat_timespec __user *);
extern asmlinkage long compat_sys_getsockopt(int, int, int, char __user *, int __user *);
extern int put_cmsg_compat(struct msghdr*, int, int, int, void *);
Index: linux-2.6/net/compat.c
===================================================================
--- linux-2.6.orig/net/compat.c
+++ linux-2.6/net/compat.c
@@ -754,26 +754,24 @@ asmlinkage long compat_sys_recvfrom(int
asmlinkage long compat_sys_recvmmsg(int fd, struct compat_mmsghdr __user *mmsg,
unsigned vlen, unsigned int flags,
- struct timespec __user *timeout)
+ struct compat_timespec __user *timeout)
{
int datagrams;
struct timespec ktspec;
- struct compat_timespec __user *utspec;
if (timeout == NULL)
return __sys_recvmmsg(fd, (struct mmsghdr __user *)mmsg, vlen,
flags | MSG_CMSG_COMPAT, NULL);
- utspec = (struct compat_timespec __user *)timeout;
- if (get_user(ktspec.tv_sec, &utspec->tv_sec) ||
- get_user(ktspec.tv_nsec, &utspec->tv_nsec))
+ if (get_user(ktspec.tv_sec, &timeout->tv_sec) ||
+ get_user(ktspec.tv_nsec, &timeout->tv_nsec))
return -EFAULT;
datagrams = __sys_recvmmsg(fd, (struct mmsghdr __user *)mmsg, vlen,
flags | MSG_CMSG_COMPAT, &ktspec);
if (datagrams > 0 &&
- (put_user(ktspec.tv_sec, &utspec->tv_sec) ||
- put_user(ktspec.tv_nsec, &utspec->tv_nsec)))
+ (put_user(ktspec.tv_sec, &timeout->tv_sec) ||
+ put_user(ktspec.tv_nsec, &timeout->tv_nsec)))
datagrams = -EFAULT;
return datagrams;
--
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