include/xt-internal.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _XTABLES_INTERNAL_H
   3 #define _XTABLES_INTERNAL_H 1
   4
   5 #ifndef XT_LIB_DIR
   6 #       define XT_LIB_DIR "/lib/xtables"
   7 #endif
   8
   9 /* protocol family dependent informations */
  10 struct afinfo {
  11         /* protocol family */
  12         int family;
  13
  14         /* prefix of library name (ex "libipt_" */
  15         char *libprefix;
  16
  17         /* used by setsockopt (ex IPPROTO_IP */
  18         int ipproto;
  19
  20         /* kernel module (ex "ip_tables" */
  21         char *kmod;
  22
  23         /* optname to check revision support of match */
  24         int so_rev_match;
  25
  26         /* optname to check revision support of match */
  27         int so_rev_target;
  28 };
  29
  30 enum xt_tryload {
  31         DONT_LOAD,
  32         DURING_LOAD,
  33         TRY_LOAD,
  34         LOAD_MUST_SUCCEED
  35 };
  36
  37 struct xtables_rule_match {
  38         struct xtables_rule_match *next;
  39         struct xtables_match *match;
  40         /* Multiple matches of the same type: the ones before
  41            the current one are completed from parsing point of view */
  42         unsigned int completed;
  43 };
  44
  45 extern char *lib_dir;
  46
  47 extern void *fw_calloc(size_t count, size_t size);
  48 extern void *fw_malloc(size_t size);
  49
  50 extern const char *modprobe_program;
  51 extern int xtables_insmod(const char *modname, const char *modprobe, int quiet);
  52 extern int load_xtables_ko(const char *modprobe, int quiet);
  53
  54 /* This is decleared in ip[6]tables.c */
  55 extern struct afinfo afinfo;
  56
  57 /* Keeping track of external matches and targets: linked lists.  */
  58 extern struct xtables_match *xtables_matches;
  59 extern struct xtables_target *xtables_targets;
  60
  61 extern struct xtables_match *find_match(const char *name, enum xt_tryload,
  62                                         struct xtables_rule_match **match);
  63 extern struct xtables_target *find_target(const char *name, enum xt_tryload);
  64
  65 extern void _init(void);
  66
  67 #endif /* _XTABLES_INTERNAL_H */