Messages in this thread Patch in this message | | | From | kuznet@ms2 ... | Subject | Re: Unix-domain sockets - abstract addresses | Date | Thu, 8 Aug 2002 22:36:38 +0400 (MSD) |
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Hello!
> According to the man page 'unix(7)': > When a socket is connected and it doesn't already have a local address a > unique address in the abstract namespace will be generated automatically.
This is wrong. The address is not autogenerated unless SO_PASSCRED is requested by security&compatibility reasons. So, if the socket is SOCK_DGRAM it is anounymous and "send-only", it is impossible to reply to it.
> but I have seen 0x0BA5, 0x7FA8, 0x1FA8 and others).
Yes, this is bug. The fix is enclosed. It should return nil address.
> So, the question is: which is right? The man page, or af_unix.c?
Both of them are wrong.
Alexey
--- af_unix.c.orig Thu Aug 8 22:23:56 2002 +++ af_unix.c Thu Aug 8 22:34:58 2002 @@ -1432,7 +1432,7 @@ static void unix_copy_addr(struct msghdr *msg, struct sock *sk) { - msg->msg_namelen = sizeof(short); + msg->msg_namelen = 0; if (sk->protinfo.af_unix.addr) { msg->msg_namelen=sk->protinfo.af_unix.addr->len; memcpy(msg->msg_name, - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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