Initial revision

resolv/resolv.h

@@ -0,0 +1,71 @@
+/*
+ * Copyright (c) 1983, 1987, 1989 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that: (1) source distributions retain this entire copyright
+ * notice and comment, and (2) distributions including binaries display
+ * the following acknowledgement:  ``This product includes software
+ * developed by the University of California, Berkeley and its contributors''
+ * in the documentation or other materials provided with the distribution
+ * and in all advertising materials mentioning features or use of this
+ * software. Neither the name of the University nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ *	@(#)resolv.h	5.10 (Berkeley) 6/1/90
+ */
+
+/*
+ * Resolver configuration file.
+ * Normally not present, but may contain the address of the
+ * inital name server(s) to query and the domain search list.
+ */
+
+#ifndef _PATH_RESCONF
+#define _PATH_RESCONF        "/etc/resolv.conf"
+#endif
+
+/*
+ * Global defines and variables for resolver stub.
+ */
+#define	MAXNS		3		/* 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 */
+
+struct state {
+	int	retrans;	 	/* retransmition time interval */
+	int	retry;			/* number of times to retransmit */
+	long	options;		/* option flags - see below. */
+	int	nscount;		/* number of name servers */
+	struct	sockaddr_in nsaddr_list[MAXNS];	/* address of name server */
+#define	nsaddr	nsaddr_list[0]		/* for backward compatibility */
+	u_short	id;			/* current packet id */
+	char	defdname[MAXDNAME];	/* default domain */
+	char	*dnsrch[MAXDNSRCH+1];	/* components of domain to search */
+};
+
+/*
+ * Resolver options
+ */
+#define RES_INIT	0x0001		/* address initialized */
+#define RES_DEBUG	0x0002		/* print debug messages */
+#define RES_AAONLY	0x0004		/* authoritative answers only */
+#define RES_USEVC	0x0008		/* use virtual circuit */
+#define RES_PRIMARY	0x0010		/* query primary server only */
+#define RES_IGNTC	0x0020		/* ignore trucation errors */
+#define RES_RECURSE	0x0040		/* recursion desired */
+#define RES_DEFNAMES	0x0080		/* use default domain name */
+#define RES_STAYOPEN	0x0100		/* Keep TCP socket open */
+#define RES_DNSRCH	0x0200		/* search up local domain tree */
+
+#define RES_DEFAULT	(RES_RECURSE | RES_DEFNAMES | RES_DNSRCH)
+
+extern struct state _res;
+extern char *p_cdname(), *p_rr(), *p_type(), *p_class(), *p_time();