g13: Implement --umount for dm-crypt.

* g13/g13.c (main): Implement command --umount.
* g13/mount.c (g13_umount_container): use the syshelper if needed.
* g13/backend.c (be_umount_container): New.
* g13/be-dmcrypt.c (be_dmcrypt_umount_container): New.
* g13/call-syshelp.c (call_syshelp_run_umount): New.
* g13/sh-cmd.c (cmd_umount): New.
(register_commands): Register UMOUNT.
* g13/sh-dmcrypt.c (sh_dmcrypt_umount_container): New.

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

1 files changed, 18 insertions, 0 deletions

diff --git a/g13/backend.c b/g13/backend.c
index dd2176834..659c6b749 100644
--- a/g13/backend.c
+++ b/g13/backend.c
@@ -240,6 +240,24 @@ be_mount_container (ctrl_t ctrl, int conttype,
 }
 
 
+/* Dispatcher to the backend's umount function.  */
+gpg_error_t
+be_umount_container (ctrl_t ctrl, int conttype, const char *fname)
+{
+  switch (conttype)
+    {
+    case CONTTYPE_ENCFS:
+      return gpg_error (GPG_ERR_NOT_SUPPORTED);
+
+    case CONTTYPE_DM_CRYPT:
+      return be_dmcrypt_umount_container (ctrl, fname);
+
+    default:
+      return no_such_backend (conttype);
+    }
+}
+
+
 /* Dispatcher to the backend's suspend function.  */
 gpg_error_t
 be_suspend_container (ctrl_t ctrl, int conttype, const char *fname)