xref: /illumos-gate/usr/src/head/netdir.h (revision 6e270ca8)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*
23  * Copyright 2014 Garrett D'Amore <garrett@damore.org>
24  * Copyright (c) 2016 by Delphix. All rights reserved.
25  */
26 /*	Copyright (c) 1992 Sun Microsystems, Inc.	*/
27 /*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
28 /*	  All Rights Reserved	*/
29 
30 /*
31  * netdir.h
32  *
33  * This is the include file that defines various structures and
34  * constants used by the netdir routines.
35  */
36 
37 #ifndef _NETDIR_H
38 #define	_NETDIR_H
39 
40 /*
41  * This files uses struct netconfig, and netconfig.h must be included
42  * before this to avoid warnings.
43  */
44 
45 #include <netconfig.h>
46 
47 #ifdef	__cplusplus
48 extern "C" {
49 #endif
50 
51 struct nd_addrlist {
52 	int		n_cnt;		/* number of netbufs */
53 	struct netbuf	*n_addrs;	/* the netbufs */
54 };
55 
56 struct nd_hostservlist {
57 	int			h_cnt;		/* number of nd_hostservs */
58 	struct nd_hostserv	*h_hostservs;	/* the entries */
59 };
60 
61 struct nd_hostserv {
62 	char		*h_host;	/* the host name */
63 	char		*h_serv;	/* the service name */
64 };
65 
66 struct nd_mergearg {
67 	char		*s_uaddr;	/* servers universal address */
68 	char		*c_uaddr;	/* clients universal address */
69 	char		*m_uaddr;	/* merged universal address */
70 };
71 
72 /*
73  * _nderror is a private variable to the netdir system.
74  */
75 #ifdef _REENTRANT
76 extern int	*__nderror();
77 #define	_nderror	(*(__nderror()))
78 #else
79 extern int _nderror;
80 #endif  /* _REENTRANT */
81 
82 
83 int netdir_options(struct netconfig *, int option, int fd, char *par);
84 int netdir_getbyname(struct netconfig *, struct nd_hostserv *,
85     struct nd_addrlist **);
86 int netdir_getbyaddr(struct netconfig *, struct nd_hostservlist **,
87     struct netbuf *);
88 int __netdir_getbyaddr_nosrv(struct netconfig *, struct nd_hostservlist **,
89     struct netbuf *);
90 int netdir_mergeaddr(struct netconfig *, char **muaddr, char *uaddr,
91     char *ruaddr);
92 void netdir_free(void *, int);
93 struct netbuf *uaddr2taddr(struct netconfig *, char *);
94 char *taddr2uaddr(struct netconfig *, struct netbuf *);
95 void netdir_perror(char *);
96 char *netdir_sperror();
97 struct nd_addrlist *_netdir_getbyname(struct netconfig *, struct nd_hostserv *);
98 struct nd_hostservlist *_netdir_getbyaddr(struct netconfig *, struct netbuf *);
99 struct netbuf *_uaddr2taddr(struct netconfig *, char *);
100 char *_taddr2uaddr(struct netconfig *, struct netbuf *);
101 char *_netdir_mergeaddr(struct netconfig *, char *uaddr, char *ruaddr);
102 
103 /*
104  * These are all objects that can be freed by netdir_free
105  */
106 #define	ND_HOSTSERV	0
107 #define	ND_HOSTSERVLIST	1
108 #define	ND_ADDR		2
109 #define	ND_ADDRLIST	3
110 
111 /*
112  * These are the various errors that can be encountered while attempting
113  * to translate names to addresses. Note that none of them (except maybe
114  * no memory) are truely fatal unless the ntoa deamon is on its last attempt
115  * to translate the name. First four errors are to failitate return values
116  * from DNS, that are used by mail and others.
117  *
118  * Negative errors terminate the search resolution process, positive errors
119  * are treated as warnings.
120  */
121 
122 #define	ND_TRY_AGAIN	-5	/* Non-Authoritive Host not found, or */
123 				/* SERVERFAIL */
124 #define	ND_NO_RECOVERY	-4	/* Non recoverable errors, FORMERR, REFUSED, */
125 				/* NOTIMP */
126 #define	ND_NO_DATA	-3	/* Valid name, no data record of requested */
127 				/* type */
128 #define	ND_NO_ADDRESS ND_NO_DATA /* no address, look for MX record */
129 #define	ND_BADARG	-2	/* Bad arguments passed		*/
130 #define	ND_NOMEM	-1	/* No virtual memory left	*/
131 #define	ND_OK		0	/* Translation successful	*/
132 #define	ND_NOHOST	1	/* Hostname was not resolvable	*/
133 #define	ND_NOSERV	2	/* Service was unknown		*/
134 #define	ND_NOSYM	3	/* Couldn't resolve symbol	*/
135 #define	ND_OPEN		4	/* File couldn't be opened	*/
136 #define	ND_ACCESS	5	/* File is not accessable	*/
137 #define	ND_UKNWN	6	/* Unknown object to be freed	*/
138 #define	ND_NOCTRL	7	/* Unknown option passed to netdir_options */
139 #define	ND_FAILCTRL	8	/* Option failed in netdir_options */
140 #define	ND_SYSTEM	9	/* Other System error		*/
141 
142 /*
143  * The following netdir_options commands can be given to the fd. These is
144  * a way of providing for any transport specific action which the caller
145  * may want to initiate on its transport. It is up to the trasport provider
146  * to support the netdir_options it wants to support.
147  */
148 
149 #define	ND_SET_BROADCAST	1	/* Do t_optmgmt to support broadcast */
150 #define	ND_SET_RESERVEDPORT	2	/* bind it to reserve address */
151 #define	ND_CHECK_RESERVEDPORT	3	/* check if address is reserved */
152 #define	ND_MERGEADDR		4	/* Merge universal address */
153 
154 /*
155  *	The following special case host names are used to give the underlying
156  *	transport provides a clue as to the intent of the request.
157  */
158 
159 #define	HOST_SELF	"\\1"
160 #define	HOST_ANY	"\\2"
161 #define	HOST_BROADCAST	"\\3"
162 #define	HOST_SELF_BIND	HOST_SELF
163 #define	HOST_SELF_CONNECT	"\\4"
164 
165 #ifdef	__cplusplus
166 }
167 #endif
168 
169 #endif	/* _NETDIR_H */
170