net: use compat helper functions in compat_sys_recvmmsg

Use (get|put)_compat_timespec helper functions to simplify the code.

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>

diff --git a/net/compat.c b/net/compat.c
index c4d9131..a1fb1b0 100644 (file)
--- a/net/compat.c
+++ b/net/compat.c
@@ -763,15 +763,12 @@ asmlinkage long compat_sys_recvmmsg(int fd, struct compat_mmsghdr __user *mmsg,
                return __sys_recvmmsg(fd, (struct mmsghdr __user *)mmsg, vlen,
                                      flags | MSG_CMSG_COMPAT, NULL);
 
-       if (get_user(ktspec.tv_sec, &timeout->tv_sec) ||
-           get_user(ktspec.tv_nsec, &timeout->tv_nsec))
+       if (get_compat_timespec(&ktspec, timeout))
                return -EFAULT;
 
        datagrams = __sys_recvmmsg(fd, (struct mmsghdr __user *)mmsg, vlen,
                                   flags | MSG_CMSG_COMPAT, &ktspec);
-       if (datagrams > 0 &&
-           (put_user(ktspec.tv_sec, &timeout->tv_sec) ||
-            put_user(ktspec.tv_nsec, &timeout->tv_nsec)))
+       if (datagrams > 0 && put_compat_timespec(&ktspec, timeout))
                datagrams = -EFAULT;
 
        return datagrams;