/usr/include/libiptc/libxtc.h is in iptables-dev 1.4.12-1ubuntu4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 | #ifndef _LIBXTC_H
#define _LIBXTC_H
/* Library which manipulates filtering rules. */
#include <libiptc/ipt_kernel_headers.h>
#include <linux/netfilter/x_tables.h>
#ifdef __cplusplus
extern "C" {
#endif
#ifndef XT_MIN_ALIGN
/* xt_entry has pointers and u_int64_t's in it, so if you align to
it, you'll also align to any crazy matches and targets someone
might write */
#define XT_MIN_ALIGN (__alignof__(struct xt_entry))
#endif
#ifndef XT_ALIGN
#define XT_ALIGN(s) (((s) + ((XT_MIN_ALIGN)-1)) & ~((XT_MIN_ALIGN)-1))
#endif
#define XTC_LABEL_ACCEPT "ACCEPT"
#define XTC_LABEL_DROP "DROP"
#define XTC_LABEL_QUEUE "QUEUE"
#define XTC_LABEL_RETURN "RETURN"
#ifdef __cplusplus
}
#endif
#endif /* _LIBXTC_H */
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