[PATCH 2/4 - 2.6.15]net: 32 bit (socket layer) ioctl emulation for 64 bit kernels

[Shaun Pereira <spereira@tusc.com.au>]

The second part of this series. 

This routine is needed by the x25 module (32-64 bit patch), as
recommended it has been added to compat.c

diff -uprN -X dontdiff linux-2.6.15-vanilla/include/net/compat.h
linux-2.6.15/include/net/compat.h
--- linux-2.6.15-vanilla/include/net/compat.h	2006-01-03
14:21:10.000000000 +1100
+++ linux-2.6.15/include/net/compat.h	2006-01-12 16:01:09.000000000
+1100
@@ -23,6 +23,8 @@ struct compat_cmsghdr {
 	compat_int_t	cmsg_type;
 };
 
+extern int compat_sock_get_timestamp(struct sock *, struct timeval
__user *);
+
 #else /* defined(CONFIG_COMPAT) */
 #define compat_msghdr	msghdr		/* to avoid compiler warnings */
 #endif /* defined(CONFIG_COMPAT) */
diff -uprN -X dontdiff linux-2.6.15-vanilla/net/compat.c
linux-2.6.15/net/compat.c
--- linux-2.6.15-vanilla/net/compat.c	2006-01-03 14:21:10.000000000
+1100
+++ linux-2.6.15/net/compat.c	2006-01-12 16:01:09.000000000 +1100
@@ -503,6 +503,20 @@ static int do_get_sock_timeout(int fd, i
 	return err;
 }
 
+int compat_sock_get_timestamp(struct sock *sk, struct timeval __user
*userstamp)
+{
+	struct compat_timeval __user *ctv;
+	ctv = (struct compat_timeval __user*) userstamp;
+	if(!sock_flag(sk, SOCK_TIMESTAMP))
+		sock_enable_timestamp(sk);
+	if(sk->sk_stamp.tv_sec == -1)
+		return -ENOENT;
+	if(sk->sk_stamp.tv_sec == 0)
+		do_gettimeofday(&sk->sk_stamp);
+	return copy_to_user(ctv, &sk->sk_stamp, sizeof(struct
compat_timeval)) ?
+			-EFAULT : 0;
+}
+
 asmlinkage long compat_sys_getsockopt(int fd, int level, int optname,
 				char __user *optval, int __user *optlen)
 {
@@ -602,3 +616,5 @@ asmlinkage long compat_sys_socketcall(in
 	}
 	return ret;
 }
+
+EXPORT_SYMBOL(compat_sock_get_timestamp);





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