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I have decided to release the examples in this library in the public
domain. Jan Engelhardt, who has been the sole contributor so far, has
agreed with this re-licensing by communication via e-mail.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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The usage text already specified [family] as optional, now implement it :-)
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
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Running `genl-family-get VFS_DQUOT` forgets to print a newline.
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
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A small little pedantism: NULL (as in, the pointer) isn't NUL (as in,
the character with value zero, '\0'). I propose to rename it to strz,
for the zero-terminated string (sometimes referred to as ASCIZ string,
but of course C isn't tied to ASCII).
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Davem spotted during the Netfilter Workshop that user-space applications
should use 8KB buffers for recv(). I accidentally found that NFLOG is
not following this approach (in this case we're using 131072 bytes
messages), we have to document this.
Anyway, according to linux/netlink.h (and to complete this log message):
"skb should fit one page. This choice is good for headerless malloc.
But we should limit to 8K so that userspace does not have to
use enormous buffer sizes on recvmsg() calls just to avoid
MSG_TRUNC when PAGE_SIZE is very large."
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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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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