Add rtc translator and RTC CMOS driver

A /hurd/rtc translator will be created as, users can create a /dev/rtc
device using the following command:
```
sudo settrans -c /dev/rtc /hurd/rtc
```

* Makefile: add rtc-cmos server into the compile chain
* hurd/pioctl.defs: new file. Interfaces for rtc ioctl operations
* hurd/rtc.h: new file. Interfaces for rtc device
* rtc/Makefile: new file. Makefile for rtc server
* rtc/main.c: new file. Initialisation for rtc translator
* rtc/mig-mutate.h: new file. Type translation for rtc server
* rtc/rtc-cmos_pioctl-ops.c: new file. The rtc-cmos server-side implementation

Signed-off-by: Zhaoming Luo <zhmingluo@163.com>
Message-ID: <20241211005415.507656-2-zhmingluo@163.com>

1 files changed, 24 insertions, 0 deletions

diff --git a/rtc/mig-mutate.h b/rtc/mig-mutate.h
new file mode 100644
index 00000000..ddead5be
--- /dev/null
+++ b/rtc/mig-mutate.h
@@ -0,0 +1,24 @@
+/* Type translation for rtc operations
+
+   Copyright (C) 2024 Free Software Foundation, Inc.
+
+   This file is part of the GNU Hurd.
+
+   The GNU Hurd 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, or (at
+   your option) any later version.
+
+   The GNU Hurd 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., 59 Temple Place - Suite 330, Boston, MA  02111, USA. */
+
+#define IO_INTRAN trivfs_protid_t trivfs_begin_using_protid (io_t)
+#define IO_INTRAN_PAYLOAD trivfs_protid_t trivfs_begin_using_protid_payload
+#define IO_DESTRUCTOR trivfs_end_using_protid (trivfs_protid_t)
+#define PIOCTL_IMPORTS import "../libtrivfs/mig-decls.h";