On Mon,  9 Jul 2007 04:01:58 -0700 (PDT) [EMAIL PROTECTED] wrote:

> http://bugzilla.kernel.org/show_bug.cgi?id=8726
> 
>            Summary: MSG_TRUNC not regarded in unix_dgram_recvmsg()
>            Product: Networking
>            Version: 2.5
>      KernelVersion: 2.6.19
>           Platform: All
>         OS/Version: Linux
>               Tree: Mainline
>             Status: NEW
>           Severity: normal
>           Priority: P1
>          Component: Other
>         AssignedTo: [EMAIL PROTECTED]
>         ReportedBy: [EMAIL PROTECTED]
> 
> 
> Problem Description:
> 
> In unix_dgram_recvmsg() in af_unix.c the flag MSG_TRUNC is not regarded as
> described in the recv(2) man page.
> 
> This did work in older kernels (I have a working 2.6.13, but am not sure if
> that is a plain kernel.org one, nor if it was the last working revision).
> I believe the bug was introduced when the variable "copied" was removed from
> the code.
> 
> IMHO, the line 1650:
> 
> err = size;
> 
> should read
> 
> err = (flags & MSG_TRUNC) ? skb->len : size;
> 
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