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glibc  2.9
getdomain.c
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00001 /* Copyright (C) 1994,95,97,2000,02 Free Software Foundation, Inc.
00002    This file is part of the GNU C Library.
00003 
00004    The GNU C Library is free software; you can redistribute it and/or
00005    modify it under the terms of the GNU Lesser General Public
00006    License as published by the Free Software Foundation; either
00007    version 2.1 of the License, or (at your option) any later version.
00008 
00009    The GNU C Library is distributed in the hope that it will be useful,
00010    but WITHOUT ANY WARRANTY; without even the implied warranty of
00011    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012    Lesser General Public License for more details.
00013 
00014    You should have received a copy of the GNU Lesser General Public
00015    License along with the GNU C Library; if not, write to the Free
00016    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00017    02111-1307 USA.  */
00018 
00019 /* Put the name of the current YP domain in no more than LEN bytes of NAME.
00020    The result is null-terminated if LEN is large enough for the full
00021    name and the terminator.  */
00022 
00023 #include <errno.h>
00024 #include <unistd.h>
00025 #include <sys/param.h>
00026 #include <sys/utsname.h>
00027 #include <string.h>
00028 
00029 #if _UTSNAME_DOMAIN_LENGTH
00030 /* The `uname' information includes the domain name.  */
00031 
00032 int
00033 getdomainname (name, len)
00034     char *name;
00035     size_t len;
00036 {
00037   struct utsname u;
00038   size_t u_len;
00039 
00040   if (uname (&u) < 0)
00041     return -1;
00042 
00043   u_len = strlen (u.domainname);
00044   memcpy (name, u.domainname, MIN (u_len + 1, len));
00045   return 0;
00046 }
00047 
00048 #else
00049 
00050 int
00051 getdomainname (name, len)
00052      char *name;
00053      size_t len;
00054 {
00055   __set_errno (ENOSYS);
00056   return -1;
00057 }
00058 
00059 stub_warning (getdomainname)
00060 #include <stub-tag.h>
00061 
00062 #endif
00063 
00064 libc_hidden_def (getdomainname)