lib/libc/rpc/rpcdname.c

   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  * @(#)rpcdname.c 1.7 91/03/11 Copyr 1989 Sun Micro
  31  * $FreeBSD: src/lib/libc/rpc/rpcdname.c,v 1.5 2004/10/16 06:11:35 obrien Exp $
  32  * $DragonFly: src/lib/libc/rpc/rpcdname.c,v 1.3 2005/11/13 12:27:04 swildner Exp $
  33  */
  34
  35 /*
  36  * rpcdname.c
  37  * Gets the default domain name
  38  */
  39
  40 #include "namespace.h"
  41 #include <stdlib.h>
  42 #include <unistd.h>
  43 #include <string.h>
  44 #include "un-namespace.h"
  45
  46 static char *default_domain = 0;
  47
  48 static char *
  49 get_default_domain(void)
  50 {
  51         char temp[256];
  52
  53         if (default_domain)
  54                 return (default_domain);
  55         if (getdomainname(temp, sizeof(temp)) < 0)
  56                 return (0);
  57         if ((int) strlen(temp) > 0) {
  58                 default_domain = (char *)malloc((strlen(temp)+(unsigned)1));
  59                 if (default_domain == 0)
  60                         return (0);
  61                 strcpy(default_domain, temp);
  62                 return (default_domain);
  63         }
  64         return (0);
  65 }
  66
  67 /*
  68  * This is a wrapper for the system call getdomainname which returns a
  69  * ypclnt.h error code in the failure case.  It also checks to see that
  70  * the domain name is non-null, knowing that the null string is going to
  71  * get rejected elsewhere in the NIS client package.
  72  */
  73 int
  74 __rpc_get_default_domain(char **domain)
  75 {
  76         if ((*domain = get_default_domain()) != 0)
  77                 return (0);
  78         return (-1);
  79 }