Imported Upstream version 93u+upstream

1 files changed, 48 insertions, 0 deletions

diff --git a/src/lib/libast/comp/realpath.c b/src/lib/libast/comp/realpath.c
new file mode 100644
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--- /dev/null
+++ b/src/lib/libast/comp/realpath.c
@@ -0,0 +1,48 @@
+/***********************************************************************
+*                                                                      *
+*               This software is part of the ast package               *
+*          Copyright (c) 1985-2011 AT&T Intellectual Property          *
+*                      and is licensed under the                       *
+*                 Eclipse Public License, Version 1.0                  *
+*                    by AT&T Intellectual Property                     *
+*                                                                      *
+*                A copy of the License is available at                 *
+*          http://www.eclipse.org/org/documents/epl-v10.html           *
+*         (with md5 checksum b35adb5213ca9657e911e9befb180842)         *
+*                                                                      *
+*              Information and Software Systems Research               *
+*                            AT&T Research                             *
+*                           Florham Park NJ                            *
+*                                                                      *
+*                 Glenn Fowler <gsf@research.att.com>                  *
+*                  David Korn <dgk@research.att.com>                   *
+*                   Phong Vo <kpv@research.att.com>                    *
+*                                                                      *
+***********************************************************************/
+#pragma prototyped
+/*
+ * realpath implementation
+ */
+
+#define realpath	______realpath
+#define resolvepath	______resolvepath
+
+#include <ast.h>
+
+#undef	realpath
+#undef	resolvepath
+
+#undef	_def_map_ast
+#include <ast_map.h>
+
+extern int		resolvepath(const char*, char*, size_t);
+
+#if defined(__EXPORT__)
+#define extern	__EXPORT__
+#endif
+
+extern char*
+realpath(const char* file, char* path)
+{
+	return resolvepath(file, path, PATH_MAX) > 0 ? path : (char*)0;
+}