g13: Second chunk of code to support dm-crypt.

* g13/be-dmcrypt.c, g13/be-dmcrypt.h: New.
* g13/Makefile.am (g13_SOURCES): Add them.
* g13/backend.c: Include be-dmcrypt.h and call-syshelp.h.
(no_such_backend): Rename to _no_such_backend and provide replacement
macro.
(be_is_supported_conttype): Support DM-Crypt.
(be_take_lock_for_create): Call set_segvice for DM-Crypt.
(be_create_new_keys): Make it a dummy for DM-Crypt.
(be_create_container): Call be_dmcrypt_create_container.
(be_mount_container): call be_dmcrypt_mount_container.
* g13/g13-syshelp.c (main): Enable verbose mode.
* g13/g13tuple.c (get_tupledesc_data): New.
* g13/g13tuple.h (unref_tupledesc): New.
* g13/g13.h (server_control_): Add field "recipients".
* g13/g13.c (main): Fix setting of recipients via cmdline.
(g13_deinit_default_ctrl): Release recipients list.
(g13_request_shutdown): New.  Replace all direct update of
shutdown_pending by calls this function.
* g13/server.c (server_local_s): Remove field recipients which is now
part of CTRL.
(reset_notify, cmd_recipient, cmd_create): Adjust for this change.
* g13/create.c (encrypt_keyblob): Rename to g13_encrypt_keyblob.
(g13_create_container): Support DM-Crypt.
* g13/mount.c (parse_header): Allow for meta data copies.
(g13_mount_container): Support DM-Crypt.
* g13/sh-cmd.c (cmd_create): Make it work.
(cmd_mount): New.
* g13/sh-dmcrypt.c (sh_dmcrypt_create_container): Make it work.
(sh_dmcrypt_mount_container): New.
--

With this patch we can now create an encrypted partition and partly
mount it (i.e. setup keys and create the mapped device). We do not yet
create a file system or mount that file system

Signed-off-by: Werner Koch <[email protected]>

1 files changed, 64 insertions, 0 deletions

diff --git a/g13/be-dmcrypt.c b/g13/be-dmcrypt.c
new file mode 100644
index 000000000..325567633
--- /dev/null
+++ b/g13/be-dmcrypt.c
@@ -0,0 +1,64 @@
+/* be-dmcrypt.c - The DM-Crypt based backend
+ * Copyright (C) 2015 Werner Koch
+ *
+ * This file is part of GnuPG.
+ *
+ * GnuPG 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 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GnuPG 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <config.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <unistd.h>
+
+#include "g13.h"
+#include "i18n.h"
+#include "keyblob.h"
+#include "call-syshelp.h"
+#include "be-dmcrypt.h"
+
+
+/* Create the container using the current device.
+ * information in TUPLES. */
+gpg_error_t
+be_dmcrypt_create_container (ctrl_t ctrl)
+{
+  gpg_error_t err;
+
+  err = call_syshelp_run_create (ctrl, CONTTYPE_DM_CRYPT);
+
+  return err;
+}
+
+
+/* Mount the container described by the filename FNAME and the keyblob
+ * information in TUPLES.  On success the runner id is stored at R_ID. */
+gpg_error_t
+be_dmcrypt_mount_container (ctrl_t ctrl,
+                            const char *fname, const char *mountpoint,
+                            tupledesc_t tuples)
+{
+  gpg_error_t err;
+
+  err = call_syshelp_set_device (ctrl, fname);
+  if (err)
+    goto leave;
+
+  err = call_syshelp_run_mount (ctrl, CONTTYPE_DM_CRYPT, mountpoint, tuples);
+
+ leave:
+  return err;
+}