* sysdeps/unix/sysv/linux/renameat.c: Move errno setting code in

[thirdparty/glibc.git] / io / readlinkat.c

diff --git a/io/readlinkat.c b/io/readlinkat.c
new file mode 100644 (file)
index 0000000..c6a032c
--- /dev/null
+++ b/io/readlinkat.c
@@ -0,0 +1,50 @@
+/* Copyright (C) 2005 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 <errno.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+/* Read the contents of the symbolic link PATH relative to FD into no
+   more than LEN bytes of BUF.  The contents are not null-terminated.
+   Returns the number of characters read, or -1 for errors.  */
+int
+readlinkat (fd, path, buf, len)
+     int fd;
+     const char *path;
+     char *buf;
+     size_t len;
+{
+  if (path == NULL)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  if (fd != AT_FDCWD && fd < 0 && *path != '/')
+    {
+      __set_errno (EBADF);
+      return -1;
+    }
+
+  __set_errno (ENOSYS);
+  return -1;
+}
+stub_warning (readlinkat)
+
+#include <stub-tag.h>