/usr/include/diet/resolv.h is in dietlibc-dev 0.33~cvs20120325-6.
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 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 | #ifndef _RESOLV_H
#define _RESOLV_H
#include <sys/param.h>
#include <sys/types.h>
#include <stdio.h>
#include <netinet/in.h>
__BEGIN_DECLS
#ifndef _PATH_RESCONF
#define _PATH_RESCONF "/etc/resolv.conf"
#endif
/*
* Global defines and variables for resolver stub.
*/
#define MAXNS 8 /* max # name servers we'll track */
#define MAXDFLSRCH 3 /* # default domain levels to try */
#define MAXDNSRCH 6 /* max # domains in search path */
#define LOCALDOMAINPARTS 2 /* min levels in name that is "local" */
#define RES_TIMEOUT 5 /* min. seconds between retries */
#define MAXRESOLVSORT 10 /* number of net to sort on */
#define RES_MAXNDOTS 15 /* should reflect bit field size */
typedef struct __res_state {
int retrans; /* retransmission time interval */
int retry; /* number of times to retransmit */
unsigned long options; /* option flags - see below. */
int nscount; /* number of name servers */
struct sockaddr_in_pad
nsaddr_list[MAXNS]; /* address of name server */
#define nsaddr nsaddr_list[0] /* for backward compatibility */
unsigned short id; /* current message id */
char *dnsrch[MAXDNSRCH+1]; /* components of domain to search */
char defdname[256]; /* default domain (deprecated) */
unsigned long pfcode; /* RES_PRF_ flags - see below. */
unsigned ndots:4; /* threshold for initial abs. query */
unsigned nsort:4; /* number of elements in sort_list[] */
char unused[3];
struct {
struct in_addr addr;
uint32_t mask;
} sort_list[MAXRESOLVSORT];
char pad[72]; /* on an i386 this means 512b total */
} * res_state;
/*
* Resolver options (keep these in synch with res_debug.c, please)
*/
#define RES_INIT 0x00000001 /* address initialized */
#define RES_DEBUG 0x00000002 /* print debug messages */
#define RES_AAONLY 0x00000004 /* authoritative answers only (!IMPL)*/
#define RES_USEVC 0x00000008 /* use virtual circuit */
#define RES_PRIMARY 0x00000010 /* query primary server only (!IMPL) */
#define RES_IGNTC 0x00000020 /* ignore trucation errors */
#define RES_RECURSE 0x00000040 /* recursion desired */
#define RES_DEFNAMES 0x00000080 /* use default domain name */
#define RES_STAYOPEN 0x00000100 /* Keep TCP socket open */
#define RES_DNSRCH 0x00000200 /* search up local domain tree */
#define RES_INSECURE1 0x00000400 /* type 1 security disabled */
#define RES_INSECURE2 0x00000800 /* type 2 security disabled */
#define RES_NOALIASES 0x00001000 /* shuts off HOSTALIASES feature */
#define RES_USE_INET6 0x00002000 /* use/map IPv6 in gethostbyname() */
#define RES_DEFAULT (RES_RECURSE | RES_DEFNAMES | RES_DNSRCH)
/*
* Resolver "pfcode" values. Used by dig.
*/
#define RES_PRF_STATS 0x00000001
/* 0x00000002 */
#define RES_PRF_CLASS 0x00000004
#define RES_PRF_CMD 0x00000008
#define RES_PRF_QUES 0x00000010
#define RES_PRF_ANS 0x00000020
#define RES_PRF_AUTH 0x00000040
#define RES_PRF_ADD 0x00000080
#define RES_PRF_HEAD1 0x00000100
#define RES_PRF_HEAD2 0x00000200
#define RES_PRF_TTLID 0x00000400
#define RES_PRF_HEADX 0x00000800
#define RES_PRF_QUERY 0x00001000
#define RES_PRF_REPLY 0x00002000
#define RES_PRF_INIT 0x00004000
/* 0x00008000 */
struct res_sym {
int number; /* Identifying number, like T_MX */
char * name; /* Its symbolic name, like "MX" */
char * humanname; /* Its fun name, like "mail exchanger" */
};
extern struct __res_state _res;
extern const struct res_sym __p_class_syms[];
extern const struct res_sym __p_type_syms[];
int res_init(void) __THROW;
int res_query(const char *dname, int _class, int type,
unsigned char *answer, int anslen) __THROW;
int res_search(const char *dname, int _class, int type,
unsigned char *answer, int anslen) __THROW;
int res_querydomain(const char *name, const char *domain,
int _class, int type, unsigned char *answer,
int anslen) __THROW;
int res_mkquery(int op, const char *dname, int _class,
int type, char *data, int datalen, const unsigned char* newrr,
char *buf, int buflen) __THROW;
int res_send(const char *msg, int msglen, char *answer,
int anslen) __THROW;
int dn_comp(unsigned char *msg, unsigned char *comp_dn,
int length, unsigned char **dnptrs, unsigned char *exp_dn,
unsigned char **lastdnptr) __THROW;
int dn_expand(const unsigned char *msg, const unsigned char *eomorig,
const unsigned char *comp_dn, unsigned char *exp_dn,
int length) __THROW;
void res_close(void) __THROW __attribute_dontuse__;
int dn_skipname(const unsigned char* cur,const unsigned char* eom) __THROW;
__END_DECLS
#endif
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