root/lib/libc/resolv/res_private.h

#ifndef res_private_h
#define res_private_h

struct __res_state_ext {
        union res_sockaddr_union nsaddrs[MAXNS];
        struct sort_list {
                int     af;
                union {
                        struct in_addr  ina;
                        struct in6_addr in6a;
                } addr, mask;
        } sort_list[MAXRESOLVSORT];
        char nsuffix[64];
        char nsuffix2[64];
        struct timespec conf_mtim;      /* mod time of loaded resolv.conf */
        time_t          conf_stat;      /* time of last stat(resolv.conf) */
        u_short reload_period;          /* seconds between stat(resolv.conf) */
};

extern int
res_ourserver_p(const res_state statp, const struct sockaddr *sa);

#endif

/*! \file */