Hi,
Le lundi 05 janvier 2009 à 01:43 +0100, ilninno a écrit :
> Hello again, im the insistent newbie :)
>
> Im trying to get packet pid (process identifier) but netfilter and
> nfnetlink functions aren't very clear:
>
> I saw a reference to packed pid in:
>
> struct nlmsghdr
> {
> __u32 nlmsg_len; /* Length of message including header */
> __u16 nlmsg_type; /* Message content */
> __u16 nlmsg_flags; /* Additional flags */
> __u32 nlmsg_seq; /* Sequence number */
> __u32 nlmsg_pid; /* Sending process port ID */
> };
You won't find the process id information in the kernel to userspace
message. The list of available fields is available in the
(linux_)nfnetlink_queue.h file:
https://git.netfilter.org/cgi-bin/gitweb.cgi?p=libnetfilter_queue.git;a=blob;f=include/libnetfilter_queue/linux_nfnetlink_queue.h;h=191b094b4ae071dddefb50d04b2c08b6fcadd488;hb=HEAD#l35
By the way, you will find some libnetfilter_queue documentation here:
http://www.nufw.org/doc/libnetfilter_queue/
PS: for your privately send question (please avoid this), you can't bind
two programs to the same queue.
BR,
--
Eric Leblond <eric@xxxxxx>
INL: http://www.inl.fr/
NuFW: http://www.nufw.org/
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