The branch main has been updated by kib:
URL:
https://cgit.FreeBSD.org/src/commit/?id=1808b5577da8d3fcffc70973afef250f428f9381
commit 1808b5577da8d3fcffc70973afef250f428f9381
Author: Johannes Totz <j...@bruelltuete.com>
AuthorDate: 2023-04-26 16:16:55 +0000
Commit: Konstantin Belousov <k...@freebsd.org>
CommitDate: 2023-04-28 01:28:51 +0000
Add efiwake tool
Reviewed by: kib
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D36714
---
usr.sbin/Makefile | 2 +-
usr.sbin/efiwake/Makefile | 13 +++++
usr.sbin/efiwake/efiwake.c | 134 +++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 148 insertions(+), 1 deletion(-)
diff --git a/usr.sbin/Makefile b/usr.sbin/Makefile
index 9fa1dc05a1cc..fb707e515eaa 100644
--- a/usr.sbin/Makefile
+++ b/usr.sbin/Makefile
@@ -129,7 +129,7 @@ SUBDIR.${MK_OPENSSL}+= certctl
.endif
SUBDIR.${MK_CXGBETOOL}+= cxgbetool
SUBDIR.${MK_DIALOG}+= bsdconfig
-SUBDIR.${MK_EFI}+= efivar efidp efibootmgr efitable
+SUBDIR.${MK_EFI}+= efivar efidp efibootmgr efitable efiwake
.if ${MK_OPENSSL} != "no"
SUBDIR.${MK_EFI}+= uefisign
.endif
diff --git a/usr.sbin/efiwake/Makefile b/usr.sbin/efiwake/Makefile
new file mode 100644
index 000000000000..ed2292f8a3ac
--- /dev/null
+++ b/usr.sbin/efiwake/Makefile
@@ -0,0 +1,13 @@
+# $FreeBSD$
+
+PACKAGE= efi-tools
+
+PROG= efiwake
+MAN=
+
+SRCS= efiwake.c
+
+EFIBOOT=${SRCTOP}/stand/efi
+CFLAGS+=-I${EFIBOOT}/include
+
+.include <bsd.prog.mk>
diff --git a/usr.sbin/efiwake/efiwake.c b/usr.sbin/efiwake/efiwake.c
new file mode 100644
index 000000000000..67497e2ede03
--- /dev/null
+++ b/usr.sbin/efiwake/efiwake.c
@@ -0,0 +1,134 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
+ * 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 <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include <string.h>
+#include <sysexits.h>
+#include <unistd.h>
+#include <sys/efiio.h>
+
+static void usage(void)
+{
+ printf("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_waketime_ioc waketime;
+ int error, ch;
+ bool enable = false, disable = 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();
+
+ int efi_fd = open("/dev/efi", O_RDWR);
+ if (efi_fd < 0)
+ err(EX_OSERR, "cannot open /dev/efi");
+
+ struct efi_tm now;
+ 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);
+}
