This file is indexed.

/usr/include/diet/resolv.h is in dietlibc-dev 0.33~cvs20120325-6+deb8u1.

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