Jim Keniston <jkenisto@us.ibm.com> wrote:

> Subject: [PATCH - RFC] [1/2] 2.6 must-fix list - kernel error reporting
>
> Andrew Morton's 2.6 must-fix list includes the following item:
> > o We need a kernel side API for reporting error events to userspace (could
> >   be async to 2.6 itself)
> >
> >   (Prototype core based on netlink exists)
>
> The enclosed patches provide a mechanism for reporting error events
> to user-mode applications via netlink.  This mechanism supplements
> the text-oriented printk mechanism, providing a way to log binary
> data or a mixture of text+binary.
> ...
>

Here are updated patches, reflecting the following changes:

Patch #1 (kerror.c et al):
- Given James Morris's patch to af_netlink.c (Rev 1.30 in BitKeeper), I 
was able to remove kerror_netlink_rcv().  (My patches work fine without
this, except that any packets sent to the NETLINK_KERROR socket by an
ill-behaved, root-owned application would accumulate in the kernel's
socket buffer.)

Patch #2 (evlog.c et al -- see accompanying post):
- Paraphrase dropped packets via printk() when nobody's listening to
netlink socket.
- Added support for 'z' qualifier, to resync with vsnprintf().
- In evlog.h, reordered members of struct kern_log_entry to address
alignment worries.

These patches work for both 2.5.74 and 2.5.75.

Jim Keniston
IBM Linux Technology Center

http://prdownloads.sourceforge.net/evlog/kerror-2.5.75.patch?download
http://prdownloads.sourceforge.net/evlog/evlog-2.5.75.patch?download
http://prdownloads.sourceforge.net/evlog/kerrord.tar.gz?download