perl: Binding and test for guestfs_last_errno (RHBZ#672491).

perl/t/810-mkdir-eexist.t

@@ -0,0 +1,76 @@
+# libguestfs Perl bindings -*- perl -*-
+# Copyright (C) 2011 Red Hat Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program 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 General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+# Test $g->last_errno (RHBZ#672491).
+
+use strict;
+use warnings;
+use Test::More tests => 15;
+
+use Errno;
+
+use Sys::Guestfs;
+
+my $g = Sys::Guestfs->new ();
+ok ($g);
+
+open FILE, ">test.img";
+truncate FILE, 500*1024*1024;
+close FILE;
+ok (1);
+
+$g->add_drive_opts ("test.img", format => "raw");
+ok (1);
+
+$g->launch ();
+ok (1);
+
+$g->part_disk ("/dev/sda", "mbr");
+ok (1);
+$g->mkfs ("ext2", "/dev/sda1");
+ok (1);
+
+$g->mount_options ("", "/dev/sda1", "/");
+ok (1);
+
+# Directory doesn't exist, so this mkdir should succeed.
+$g->mkdir ("/foo");
+ok (1);
+
+# Directory exists, we should be able to recover gracefully.
+eval {
+    $g->mkdir ("/foo");
+};
+ok ($@);
+my $err = $g->last_errno ();
+ok ($err > 0);
+ok ($err == Errno::EEXIST());
+
+# Can't create subdirectories with missing parents; this should
+# be a different errno.
+eval {
+    $g->mkdir ("/bar/baz");
+};
+ok ($@);
+$err = $g->last_errno ();
+ok ($err > 0);
+ok ($err != Errno::EEXIST());
+
+undef $g;
+ok (1);
+
+unlink ("test.img");