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net: fix compat_sys_recvmmsg parameter type 

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@redhat.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Heiko Carstens 2009-12-09 20:58:16 +00:00 committed by David S. Miller
parent ccdddf500f
commit 60c2ffd3d2
2 changed files with 6 additions and 8 deletions
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2
include/net/compat.h
View File

@ -46,7 +46,7 @@ extern asmlinkage long compat_sys_sendmsg(int,struct compat_msghdr __user *,unsi
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 *);

12
net/compat.c
View File

@ -754,26 +754,24 @@ asmlinkage long compat_sys_recvfrom(int fd, void __user *buf, size_t len,
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;