include/xt-internal.h

   1 #ifndef _XTABLES_INTERNAL_H
   2 #define _XTABLES_INTERNAL_H 1
   3
   4 #ifndef XT_LIB_DIR
   5 #       define XT_LIB_DIR "/lib/xtables"
   6 #endif
   7
   8 /* protocol family dependent informations */
   9 struct afinfo {
  10         /* protocol family */
  11         int family;
  12
  13         /* prefix of library name (ex "libipt_" */
  14         char *libprefix;
  15
  16         /* used by setsockopt (ex IPPROTO_IP */
  17         int ipproto;
  18
  19         /* kernel module (ex "ip_tables" */
  20         char *kmod;
  21
  22         /* optname to check revision support of match */
  23         int so_rev_match;
  24
  25         /* optname to check revision support of match */
  26         int so_rev_target;
  27 };
  28
  29 enum xt_tryload {
  30         DONT_LOAD,
  31         DURING_LOAD,
  32         TRY_LOAD,
  33         LOAD_MUST_SUCCEED
  34 };
  35
  36 struct xtables_rule_match {
  37         struct xtables_rule_match *next;
  38         struct xtables_match *match;
  39         /* Multiple matches of the same type: the ones before
  40            the current one are completed from parsing point of view */
  41         unsigned int completed;
  42 };
  43
  44 extern char *lib_dir;
  45
  46 extern void *fw_calloc(size_t count, size_t size);
  47 extern void *fw_malloc(size_t size);
  48
  49 extern const char *modprobe_program;
  50 extern int xtables_insmod(const char *modname, const char *modprobe, int quiet);
  51 extern int load_xtables_ko(const char *modprobe, int quiet);
  52
  53 /* This is decleared in ip[6]tables.c */
  54 extern struct afinfo afinfo;
  55
  56 /* Keeping track of external matches and targets: linked lists.  */
  57 extern struct xtables_match *xtables_matches;
  58 extern struct xtables_target *xtables_targets;
  59
  60 extern struct xtables_match *find_match(const char *name, enum xt_tryload,
  61                                         struct xtables_rule_match **match);
  62 extern struct xtables_target *find_target(const char *name, enum xt_tryload);
  63
  64 extern void _init(void);
  65
  66 #endif /* _XTABLES_INTERNAL_H */