diff options
| author | Zhaoming Luo <zhmingluo@163.com> | 2024-12-11 08:54:15 +0800 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2024-12-11 22:17:20 +0100 |
| commit | 5ca0fa556b24463bd52ce5e45dddefcd766ae9c3 (patch) | |
| tree | cbd03c87ca8c05a9936ab797e869e42074041fbb /rtc/main.c | |
| parent | 85d59af5be84d122adab484a9c961462d4fdbfda (diff) | |
| download | hurd-5ca0fa556b24463bd52ce5e45dddefcd766ae9c3.tar.gz hurd-5ca0fa556b24463bd52ce5e45dddefcd766ae9c3.tar.bz2 hurd-5ca0fa556b24463bd52ce5e45dddefcd766ae9c3.zip | |
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>
Diffstat (limited to 'rtc/main.c')
| -rw-r--r-- | rtc/main.c | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/rtc/main.c b/rtc/main.c new file mode 100644 index 00000000..19bf73b9 --- /dev/null +++ b/rtc/main.c @@ -0,0 +1,104 @@ +/* A translator for accessing rtc + + 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. */ + +#include <version.h> + +#include <error.h> +#include <stdbool.h> +#include <argp.h> +#include <hurd/trivfs.h> +#include <hurd/ports.h> +#include <hurd/rtc.h> +#include <sys/io.h> + +#include "rtc_pioctl_S.h" + +const char *argp_program_version = STANDARD_HURD_VERSION (rtc); + +static struct trivfs_control *rtccntl; + +int trivfs_fstype = FSTYPE_DEV; +int trivfs_fsid = 0; +int trivfs_support_read = 1; +int trivfs_support_write = 0; +int trivfs_support_exec = 0; +int trivfs_allow_open = O_READ | O_WRITE; + +static const struct argp rtc_argp = +{ NULL, NULL, NULL, "Real-Time Clock device" }; + +static int +demuxer (mach_msg_header_t *inp, mach_msg_header_t *outp) +{ + mig_routine_t routine; + if ((routine = rtc_pioctl_server_routine (inp)) || + (routine = NULL, trivfs_demuxer (inp, outp))) + { + if (routine) + (*routine) (inp, outp); + return TRUE; + } + else + return FALSE; +} + +int +main (int argc, char **argv) +{ + error_t err; + mach_port_t bootstrap; + + argp_parse (&rtc_argp, argc, argv, 0, 0, 0); + + task_get_bootstrap_port (mach_task_self (), &bootstrap); + if (bootstrap == MACH_PORT_NULL) + error (1, 0, "Must be started as a translator"); + + /* Request for permission to do i/o on port numbers 0x70 and 0x71 for + accessing RTC registers. Do this before replying to our parent, so + we don't end up saying "I'm ready!" and then immediately exit with + an error. */ + err = ioperm (0x70, 2, true); + if (err) + error (1, err, "Request IO permission failed"); + + /* Reply to our parent. */ + err = trivfs_startup (bootstrap, O_NORW, NULL, NULL, NULL, NULL, &rtccntl); + mach_port_deallocate (mach_task_self (), bootstrap); + if (err) + error (1, err, "trivfs_startup failed"); + + /* Launch. */ + ports_manage_port_operations_one_thread (rtccntl->pi.bucket, demuxer, + 2 * 60 * 1000); + + return 0; +} + +void +trivfs_modify_stat (struct trivfs_protid *cred, struct stat *st) +{ +} + +error_t +trivfs_goaway (struct trivfs_control *fsys, int flags) +{ + exit (EXIT_SUCCESS); +} |