/* xgethostname.c -- return current hostname with unlimited length
- Copyright (C) 1992, 1996, 2000, 2001, 2003, 2004 Free Software
+ Copyright (C) 1992, 1996, 2000-2001, 2003-2006, 2009-2013 Free Software
Foundation, Inc.
- This program is free software; you can redistribute it and/or modify
+ 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.
+ the Free Software Foundation; either version 3 of the License, 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
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
/* written by Jim Meyering */
-#ifdef HAVE_CONFIG_H
-# include <config.h>
-#endif
+#include <config.h>
/* Specification. */
#include "xgethostname.h"
#include <stdlib.h>
#include <errno.h>
+#include <unistd.h>
-#if HAVE_UNISTD_H
-# include <unistd.h>
-#endif
-
-#include "error.h"
#include "xalloc.h"
-#ifndef ENAMETOOLONG
-# define ENAMETOOLONG 0
-#endif
-
#ifndef INITIAL_HOSTNAME_LENGTH
# define INITIAL_HOSTNAME_LENGTH 34
#endif
while (1)
{
/* Use SIZE_1 here rather than SIZE to work around the bug in
- SunOS 5.5's gethostname whereby it NUL-terminates HOSTNAME
- even when the name is as long as the supplied buffer. */
+ SunOS 5.5's gethostname whereby it NUL-terminates HOSTNAME
+ even when the name is as long as the supplied buffer. */
size_t size_1;
hostname = x2realloc (hostname, &size);
errno = 0;
if (gethostname (hostname, size_1) == 0)
- {
- if (! hostname[size_1 - 1])
- break;
- }
- else if (errno != 0 && errno != ENAMETOOLONG && errno != EINVAL)
- {
- int saved_errno = errno;
- free (hostname);
- errno = saved_errno;
- return NULL;
- }
+ {
+ if (! hostname[size_1 - 1])
+ break;
+ }
+ else if (errno != 0 && errno != ENAMETOOLONG && errno != EINVAL
+ /* OSX/Darwin does this when the buffer is not large enough */
+ && errno != ENOMEM)
+ {
+ int saved_errno = errno;
+ free (hostname);
+ errno = saved_errno;
+ return NULL;
+ }
}
return hostname;