GNU shell utilitiesSHELLUTILS-1_9_4l

1 files changed, 61 insertions, 0 deletions

diff --git a/lib/xgethostname.c b/lib/xgethostname.c
new file mode 100644
index 0000000000..86408e775d
--- /dev/null
+++ b/lib/xgethostname.c
@@ -0,0 +1,61 @@
+/* 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
+#if defined (CONFIG_BROKETS)
+/* We use <config.h> instead of "config.h" so that a compilation
+   using -I. -I$srcdir will use ./config.h rather than $srcdir/config.h
+   (which it would do because it found this file in $srcdir).  */
+#include <config.h>
+#else
+#include "config.h"
+#endif
+#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;
+  while (1)
+    {
+      hostname = xmalloc (size);
+      hostname[size - 1] = '\0';
+      err = gethostname (hostname, size);
+      if (err || hostname[size - 1] == '\0')
+	break;
+      size *= 2;
+      hostname = xrealloc (hostname, size);
+    }
+
+  return hostname;
+}