rpcdname.c revision 26219 
1/*
2 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
3 * unrestricted use provided that this legend is included on all tape
4 * media and as a part of the software program in whole or part.  Users
5 * may copy or modify Sun RPC without charge, but are not authorized
6 * to license or distribute it to anyone else except as part of a product or
7 * program developed by the user or with the express written consent of
8 * Sun Microsystems, Inc.
9 *
10 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
11 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
12 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
13 *
14 * Sun RPC is provided with no support and without any obligation on the
15 * part of Sun Microsystems, Inc. to assist in its use, correction,
16 * modification or enhancement.
17 *
18 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
19 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
20 * OR ANY PART THEREOF.
21 *
22 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
23 * or profits or other special, indirect and consequential damages, even if
24 * Sun has been advised of the possibility of such damages.
25 *
26 * Sun Microsystems, Inc.
27 * 2550 Garcia Avenue
28 * Mountain View, California  94043
29 */
30#if !defined(lint) && defined(SCCSIDS)
31static char sccsid[] = "@(#)rpcdname.c 1.7 91/03/11 Copyr 1989 Sun Micro";
32#endif
33
34/*
35 * rpcdname.c
36 * Gets the default domain name
37 */
38
39#include <stdlib.h>
40#include <unistd.h>
41#include <string.h>
42
43static char *default_domain = 0;
44
45static char *
46get_default_domain()
47{
48	char temp[256];
49
50	if (default_domain)
51		return (default_domain);
52	if (getdomainname(temp, sizeof(temp)) < 0)
53		return (0);
54	if ((int) strlen(temp) > 0) {
55		default_domain = (char *)malloc((strlen(temp)+(unsigned)1));
56		if (default_domain == 0)
57			return (0);
58		(void) strcpy(default_domain, temp);
59		return (default_domain);
60	}
61	return (0);
62}
63
64/*
65 * This is a wrapper for the system call getdomainname which returns a
66 * ypclnt.h error code in the failure case.  It also checks to see that
67 * the domain name is non-null, knowing that the null string is going to
68 * get rejected elsewhere in the NIS client package.
69 */
70int
71_rpc_get_default_domain(domain)
72	char **domain;
73{
74	if ((*domain = get_default_domain()) != 0)
75		return (0);
76	return (-1);
77}
78