1 files changed, 45 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/common/getdirname.c b/libc/sysdeps/linux/common/getdirname.c
new file mode 100644
index 000000000..a9ce43f30
--- /dev/null
+++ b/libc/sysdeps/linux/common/getdirname.c
@@ -0,0 +1,45 @@
+/* vi: set sw=4 ts=4: */
+/* Copyright (C) 1992, 1997, 1998, 2000 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <unistd.h>
+#include <sys/stat.h>
+#include <stdlib.h>
+#include <string.h>
+
+/* Return a malloc'd string containing the current directory name.
+   If the environment variable `PWD' is set, and its value is correct,
+   that value is used.  */
+
+char *
+get_current_dir_name (void)
+{
+	char *pwd;
+	struct stat64 dotstat, pwdstat;
+
+	pwd = getenv ("PWD");
+	if (pwd != NULL
+		&& stat64 (".", &dotstat) == 0
+		&& stat64 (pwd, &pwdstat) == 0
+		&& pwdstat.st_dev == dotstat.st_dev
+		&& pwdstat.st_ino == dotstat.st_ino)
+		/* The PWD value is correct.  Use it.  */
+		return strdup (pwd);
+
+	return getcwd ((char *) NULL, 0);
+}