Guestfish: Add 'reopen' command to reopen the libguestfs handle.

[libguestfs.git] / fish / reopen.c

diff --git a/fish/reopen.c b/fish/reopen.c
new file mode 100644 (file)
index 0000000..f2d35c7
--- /dev/null
+++ b/fish/reopen.c
@@ -0,0 +1,70 @@
+/* guestfish - the filesystem interactive shell
+ * Copyright (C) 2009 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.
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "fish.h"
+
+int
+do_reopen (const char *cmd, int argc, char *argv[])
+{
+  guestfs_h *g2;
+  int r;
+  const char *p;
+
+  if (argc > 0) {
+    fprintf (stderr, _("'reopen' command takes no parameters\n"));
+    return -1;
+  }
+
+  /* Open the new handle first, so we can copy the settings from the
+   * old one to the new one, and also so if it fails we still have an
+   * open handle.
+   */
+  g2 = guestfs_create ();
+  if (g2 == NULL) {
+    fprintf (stderr, _("reopen: guestfs_create: failed to create handle\n"));
+    return -1;
+  }
+
+  /* Now copy some of the settings from the old handle.  The settings
+   * we copy are those which are set by guestfish itself.
+   */
+  r = guestfs_get_verbose (g);
+  if (r >= 0)
+    guestfs_set_verbose (g2, r);
+
+  r = guestfs_get_autosync (g);
+  if (r >= 0)
+    guestfs_set_autosync (g2, r);
+
+  p = guestfs_get_path (g);
+  if (p)
+    guestfs_set_path (g2, p);
+
+  /* Close the original handle. */
+  guestfs_close (g);
+  g = g2;
+
+  return 0;
+}