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fake-hwclock implementation #1886

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bc40af0
added simple fake-hwclock
danielbanar Sep 16, 2025
a172925
removed starting service echo
danielbanar Sep 16, 2025
25a050e
loading time now works correctly
danielbanar Sep 16, 2025
48fe1d4
whitespace changes
danielbanar Sep 16, 2025
619a13c
removed openipc suffix from package name
danielbanar Sep 22, 2025
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1 change: 1 addition & 0 deletions general/package/Config.in
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Original file line number Diff line number Diff line change
Expand Up @@ -13,6 +13,7 @@ source "$BR2_EXTERNAL_GENERAL_PATH/package/divinus/Config.in"
source "$BR2_EXTERNAL_GENERAL_PATH/package/dropbear-openipc/Config.in"
source "$BR2_EXTERNAL_GENERAL_PATH/package/exfat-openipc/Config.in"
source "$BR2_EXTERNAL_GENERAL_PATH/package/f2fs-tools-openipc/Config.in"
source "$BR2_EXTERNAL_GENERAL_PATH/package/fake-hwclock/Config.in"
source "$BR2_EXTERNAL_GENERAL_PATH/package/fdk-aac-openipc/Config.in"
source "$BR2_EXTERNAL_GENERAL_PATH/package/ffmpeg-openipc/Config.in"
source "$BR2_EXTERNAL_GENERAL_PATH/package/fullhan-osdrv-fh8852v100/Config.in"
Expand Down
5 changes: 5 additions & 0 deletions general/package/fake-hwclock/Config.in
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@@ -0,0 +1,5 @@
config BR2_PACKAGE_FAKE_HWCLOCK
bool "fake-hwclock"
help
Restores system time from a file on boot, saves the current time, or periodically updates a timestamp file to maintain time on systems without a hardware RTC.

15 changes: 15 additions & 0 deletions general/package/fake-hwclock/fake-hwclock.mk
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@@ -0,0 +1,15 @@
################################################################################
#
# fake-hwclock
#
################################################################################

define FAKE_HWCLOCK_INSTALL_TARGET_CMDS
$(INSTALL) -m 755 -d $(TARGET_DIR)/etc/init.d
$(INSTALL) -m 755 -t $(TARGET_DIR)/etc/init.d $(FAKE_HWCLOCK_PKGDIR)/files/S39fakehwclock

$(INSTALL) -m 755 -d $(TARGET_DIR)/usr/bin
$(INSTALL) -m 755 -t $(TARGET_DIR)/usr/bin $(FAKE_HWCLOCK_PKGDIR)/files/fake-hwclock
endef

$(eval $(generic-package))
35 changes: 35 additions & 0 deletions general/package/fake-hwclock/files/S39fakehwclock
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#!/bin/sh

DAEMON="fake-hwclock"
PIDFILE="/var/run/$DAEMON.pid"
DAEMON_ARGS="5 /etc/fake-hwclock.data"

case "$1" in
start)
fake-hwclock load /etc/fake-hwclock.data
# Save timestamp every 5 seconds
start-stop-daemon -b -m -S -q -p "$PIDFILE" -x "$DAEMON" -- $DAEMON_ARGS
if [ $? -eq 0 ]; then
echo "OK"
else
echo "FAIL"
fi
;;

stop)
echo -n "Stopping $DAEMON: "
start-stop-daemon -K -q -p "$PIDFILE"
if [ $? -eq 0 ]; then
rm -f "$PIDFILE"
fake-hwclock save /etc/fake-hwclock.data
echo "OK"
else
echo "FAIL"
fi
;;

*)
echo "Usage: $0 {start|stop}"
exit 1
;;
esac
28 changes: 28 additions & 0 deletions general/package/fake-hwclock/files/fake-hwclock
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#!/bin/sh

if [[ $# -lt 2 ]]; then
exit 1
fi

MODE="$1"
TIMESTAMP_FILE="$2"

mkdir -p "$(dirname "$TIMESTAMP_FILE")"

if [[ "$MODE" == "load" ]]; then
if [[ -f "$TIMESTAMP_FILE" ]]; then
LAST_TS=$(cat "$TIMESTAMP_FILE")
if [[ -n "$LAST_TS" ]]; then
echo "fake-hwclock: Setting time to $(date -d @"$LAST_TS")"
date -s @"$LAST_TS" >/dev/null 2>&1
fi
fi
elif [[ "$MODE" == "save" ]]; then
date +%s > "$TIMESTAMP_FILE"
elif [[ "$MODE" =~ ^[0-9]+$ ]]; then
INTERVAL="$MODE"
while true; do
date +%s > "$TIMESTAMP_FILE"
sleep "$INTERVAL"
done
fi