From: Balazs Scheidler <bazsi@balabit.hu>
To: linux-kernel@vger.kernel.org
Subject: [PATCH] unix domain sockets bugfix
Date: Mon, 7 Oct 2002 09:35:32 +0200 [thread overview]
Message-ID: <20021007073532.GA15799@balabit.hu> (raw)
Hi,
I've found a bug with unix domain sockets in both kernels 2.2 and 2.4.
If the program issues a recvfrom() on a SOCK_DGRAM socket, and the sender
had no name, the sockaddr returned is not filled in.
The returned socklen is 2, but the sockaddr.family is not touched. A fix is
below:
--- af_unix.c~ Mon Feb 25 20:38:16 2002
+++ af_unix.c Fri Oct 4 09:46:26 2002
@@ -1392,6 +1392,9 @@
sk->protinfo.af_unix.addr->name,
sk->protinfo.af_unix.addr->len);
}
+ else {
+ ((struct sockaddr *) msg->msg_name)->sa_family = AF_UNIX;
+ }
}
static int unix_dgram_recvmsg(struct socket *sock, struct msghdr *msg, int size,
--
Bazsi
PGP info: KeyID 9AF8D0A9 Fingerprint CD27 CFB0 802C 0944 9CFD 804E C82C 8EB1
next reply other threads:[~2002-10-07 7:30 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-10-07 7:35 Balazs Scheidler [this message]
2002-10-07 7:48 ` [PATCH] unix domain sockets bugfix David S. Miller
2002-10-07 8:01 ` Balazs Scheidler
2002-10-07 7:56 ` David S. Miller
2002-10-07 9:15 ` James Morris
2002-11-05 17:54 Balazs Scheidler
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