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put examples files into specific directories according to the
Netlink bus they work with. And minor update in the readme file
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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This patch fixes the example that allows to set up/down the
network interface.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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They have been spotted by -Wall -Wextra
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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This function is still quite preliminary, comments welcome!
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Remove mnl_nlmsg_get_len() since it returns a field of a structure
that is public (struct nlmsghdr). We can directly access the header
fields and they are not likely to change in the future (at least
for this version of Netlink I think).
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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This patch changes the callback handlers to include netlink portID
checking. Thus, we avoid that any malicious process can spoof
messages.
If portid, sequence number of the message is != 0, we check if the
message is what we expect. This allows to use the same netlink channel
for dumps (portid, seq != 0) and event-based notifications (portid, seq == 0).
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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