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- /* xgethostname.c -- return current hostname with unlimited length
- Copyright (C) 1992 Free Software Foundation, Inc.
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2, or (at your option)
- any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- /* Written by Jim Meyering, meyering@comco.com */
-
- #ifdef HAVE_CONFIG_H
- #include <config.h>
- #endif
-
- #include <sys/types.h>
-
- int gethostname ();
- char *xmalloc ();
- char *xrealloc ();
-
- #ifndef INITIAL_HOSTNAME_LENGTH
- #define INITIAL_HOSTNAME_LENGTH 33
- #endif
-
- char *
- xgethostname ()
- {
- char *hostname;
- size_t size;
- int err;
-
- size = INITIAL_HOSTNAME_LENGTH;
- hostname = xmalloc (size);
- while (1)
- {
- hostname[size - 1] = '\0';
- err = gethostname (hostname, size);
- if (err == 0 && hostname[size - 1] == '\0')
- break;
- size *= 2;
- hostname = xrealloc (hostname, size);
- }
-
- return hostname;
- }
-