* configure.ac: Test existance of strndup.

	* lib/str.[ch]: Add strndup() from glibc.

3 files changed, 27 insertions, 1 deletions

diff --git a/lib/ChangeLog b/lib/ChangeLog
index 08d6278f..53e1eb22 100644
--- a/lib/ChangeLog
+++ b/lib/ChangeLog
@@ -1,3 +1,7 @@
+2005-09-19 Hasso Tepper <hasso at quagga.net>
+
+	* str.[ch]: Add strndup() from glibc.
+
 2005-09-05 Paul Jakma <paul.jakma@sun.com>
 
 	* command.c: (install_element) be more robust. Eg, cmd_init
diff --git a/lib/str.c b/lib/str.c
index 00d03194..4ab71e19 100644
--- a/lib/str.c
+++ b/lib/str.c
@@ -11,6 +11,9 @@
 
  Note that these are not terribly efficient, since they make more than one
  pass over the argument strings.  At some point, they should be optimized.
+ 
+ The implementation of strndup is copied from glibc-2.3.5:
+    Copyright (C) 1996, 1997, 1998, 2001, 2002 Free Software Foundation, Inc.
 */
 
 
@@ -89,3 +92,18 @@ strnlen(const char *s, size_t maxlen)
   return (p = (const char *)memchr(s, '\0', maxlen)) ? (size_t)(p-s) : maxlen;
 }
 #endif
+
+#ifndef HAVE_STRNDUP
+char *
+strndup (const char *s, size_t maxlen)
+{
+    size_t len = strnlen (s, maxlen);
+    char *new = (char *) malloc (len + 1);
+
+    if (new == NULL)
+      return NULL;
+
+    new[len] = '\0';
+    return (char *) memcpy (new, s, len);
+}
+#endif
diff --git a/lib/str.h b/lib/str.h
index 145863d2..7b83fe1c 100644
--- a/lib/str.h
+++ b/lib/str.h
@@ -1,5 +1,5 @@
 /*
- * $Id: str.h,v 1.3 2005/05/06 21:25:49 paul Exp $
+ * $Id: str.h,v 1.4 2005/09/19 09:53:21 hasso Exp $
  */
 
 #ifndef _ZEBRA_STR_H
@@ -25,5 +25,9 @@ extern size_t strlcat(char *, const char *, size_t);
 extern size_t strnlen(const char *s, size_t maxlen);
 #endif
 
+#ifndef HAVE_STRNDUP
+extern char * strndup (const char *, size_t);
+#endif
+
 #endif /* _ZEBRA_STR_H */