mirror of
https://github.com/freebsd/freebsd-src
synced 2024-07-23 03:06:48 +00:00
4d846d260e
The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch up to that fact and revert to their recommended match of BSD-2-Clause. Discussed with: pfg MFC After: 3 days Sponsored by: Netflix
141 lines
4.1 KiB
C
141 lines
4.1 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*
|
|
* Copyright (c) 2023 Johannes Totz
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <sys/efiio.h>
|
|
#include <err.h>
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#include <stdbool.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <sysexits.h>
|
|
#include <unistd.h>
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
fprintf(stderr, "Usage:\n"
|
|
" efiwake -- print out current "
|
|
"EFI time and wake time\n"
|
|
" efiwake -d -- disable wake time\n"
|
|
" efiwake -e yyyy-mm-ddThh:mm:ss -- enable wake time\n"
|
|
);
|
|
exit(EX_USAGE);
|
|
}
|
|
|
|
int
|
|
main(int argc, char **argv)
|
|
{
|
|
struct efi_tm now;
|
|
struct efi_waketime_ioc waketime;
|
|
int ch, error, efi_fd;
|
|
bool disable = false, enable = false;
|
|
|
|
memset(&waketime, 0, sizeof(waketime));
|
|
|
|
while ((ch = getopt(argc, argv, "de:")) != -1) {
|
|
switch (ch) {
|
|
case 'd':
|
|
disable = true;
|
|
break;
|
|
case 'e':
|
|
if (sscanf(optarg,
|
|
"%hu-%02hhu-%02hhuT%02hhu:%02hhu:%02hhu",
|
|
&waketime.waketime.tm_year,
|
|
&waketime.waketime.tm_mon,
|
|
&waketime.waketime.tm_mday,
|
|
&waketime.waketime.tm_hour,
|
|
&waketime.waketime.tm_min,
|
|
&waketime.waketime.tm_sec) != 6) {
|
|
usage();
|
|
}
|
|
enable = true;
|
|
break;
|
|
case '?':
|
|
default:
|
|
usage();
|
|
}
|
|
}
|
|
argc -= optind;
|
|
argv += optind;
|
|
|
|
if (argc > 0)
|
|
usage();
|
|
if (disable && enable)
|
|
usage();
|
|
|
|
efi_fd = open("/dev/efi", O_RDWR);
|
|
if (efi_fd < 0)
|
|
err(EX_OSERR, "cannot open /dev/efi");
|
|
|
|
error = ioctl(efi_fd, EFIIOC_GET_TIME, &now);
|
|
if (error != 0)
|
|
err(EX_OSERR, "cannot get EFI time");
|
|
|
|
/* EFI's time can be different from kernel's time. */
|
|
printf("Current EFI time: %u-%02u-%02uT%02u:%02u:%02u\n",
|
|
now.tm_year, now.tm_mon, now.tm_mday, now.tm_hour, now.tm_min,
|
|
now.tm_sec);
|
|
|
|
if (disable) {
|
|
/*
|
|
* It's tempting to preserve the current timer value.
|
|
* However, wonky EFI implementations sometimes return bogus
|
|
* dates for the wake timer and would then fail disabling it
|
|
* here.
|
|
* A safe timer value is the current EFI time.
|
|
*/
|
|
waketime.waketime = now;
|
|
waketime.enabled = 0;
|
|
error = ioctl(efi_fd, EFIIOC_SET_WAKETIME, &waketime);
|
|
if (error != 0)
|
|
err(EX_OSERR, "cannot disable EFI wake time");
|
|
}
|
|
if (enable) {
|
|
waketime.enabled = 1;
|
|
error = ioctl(efi_fd, EFIIOC_SET_WAKETIME, &waketime);
|
|
if (error != 0)
|
|
err(EX_OSERR, "cannot enable EFI wake time");
|
|
}
|
|
|
|
/* Confirm to user what the wake time has been set to. */
|
|
error = ioctl(efi_fd, EFIIOC_GET_WAKETIME, &waketime);
|
|
if (error != 0)
|
|
err(EX_OSERR, "cannot get EFI wake time");
|
|
|
|
printf("EFI wake time: %u-%02u-%02uT%02u:%02u:%02u; "
|
|
"enabled=%i, pending=%i\n",
|
|
waketime.waketime.tm_year, waketime.waketime.tm_mon,
|
|
waketime.waketime.tm_mday, waketime.waketime.tm_hour,
|
|
waketime.waketime.tm_min, waketime.waketime.tm_sec,
|
|
waketime.enabled, waketime.pending);
|
|
|
|
close(efi_fd);
|
|
return (0);
|
|
}
|