linux-kernel - sendmmsg: put_user vs __put

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Message-ID: <CAOPLpQf2bmj+i_zYtsS8JNzTDuBxCO5ByNRRqwv0kxaDBFdezg@mail.gmail.com>
Date:	Fri, 30 Mar 2012 09:36:11 -0400
From:	Ulrich Drepper <drepper@...il.com>
To:	"David S. Miller" <davem@...emloft.net>,
	netdev <netdev@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: sendmmsg: put_user vs __put_user

Shouldn't the compat code in the sendmmsg implementation use the same
code as the normal code?  In which case you probably want something
like this:

diff --git a/net/socket.c b/net/socket.c
index 484cc69..ff40409 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -2064,7 +2064,7 @@ int __sys_sendmmsg(int fd, struct mmsghdr __user
*mmsg, unsigned int vlen,
                                            &msg_sys, flags, &used_address);
                        if (err < 0)
                                break;
-                       err = __put_user(err, &compat_entry->msg_len);
+                       err = put_user(err, &compat_entry->msg_len);
                        ++compat_entry;
                } else {
                        err = __sys_sendmsg(sock, (struct msghdr __user *)entry,
--
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