summaryrefslogtreecommitdiff
path: root/io/getwd.c
diff options
context:
space:
mode:
authorRoland McGrath <roland@gnu.org>1995-02-18 01:27:10 +0000
committerRoland McGrath <roland@gnu.org>1995-02-18 01:27:10 +0000
commit28f540f45bbacd939bfd07f213bcad2bf730b1bf (patch)
tree15f07c4c43d635959c6afee96bde71fb1b3614ee /io/getwd.c
downloadglibc-28f540f45bbacd939bfd07f213bcad2bf730b1bf.tar.gz
initial import
Diffstat (limited to 'io/getwd.c')
-rw-r--r--io/getwd.c47
1 files changed, 47 insertions, 0 deletions
diff --git a/io/getwd.c b/io/getwd.c
new file mode 100644
index 0000000000..fdda1cac22
--- /dev/null
+++ b/io/getwd.c
@@ -0,0 +1,47 @@
+/* Copyright (C) 1991, 1992 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 Library General Public License as
+published by the Free Software Foundation; either version 2 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB. If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA. */
+
+#include <ansidecl.h>
+#include <errno.h>
+#include <limits.h>
+#include <string.h>
+#include <unistd.h>
+
+/* Put the absolute pathname of the current working direction in BUF.
+ If successful, return BUF. If not, put an error message in
+ BUF and return NULL. BUF should be at least PATH_MAX bytes long. */
+char *
+DEFUN(getwd, (buf), char *buf)
+{
+ if (buf == NULL)
+ {
+ errno = EINVAL;
+ return NULL;
+ }
+
+#ifndef PATH_MAX
+#define PATH_MAX 1024 /* Arbitrary; this function is unreliable. */
+#endif
+ if (getcwd (buf, PATH_MAX) == NULL)
+ {
+ (void) strncpy (buf, strerror (errno), PATH_MAX);
+ return NULL;
+ }
+
+ return buf;
+}