시놀로지 팬 가드 추가

2026-07-31 06:11:36 +09:00
1 parent 33851e0189
commit 17dacd896f
@@ -0,0 +1,113 @@
+#!/bin/sh
+set -eu
+
+INTERVAL_SECONDS="${INTERVAL_SECONDS:-5}"
+HIGH_TEMP_C="${HIGH_TEMP_C:-75}"
+LOW_TEMP_C="${LOW_TEMP_C:-65}"
+PWM_CHANNEL="${PWM_CHANNEL:-2}"
+PWM_FULL="${PWM_FULL:-255}"
+PWM_AUTO_ENABLE="${PWM_AUTO_ENABLE:-5}"
+PWM_MANUAL_ENABLE="${PWM_MANUAL_ENABLE:-1}"
+LAST_MODE=""
+
+log() {
+    if command -v logger >/dev/null 2>&1; then
+        logger -t syno-fan-guard "$*"
+    fi
+    printf '%s\n' "$*"
+}
+
+hwmon_by_name() {
+    target="$1"
+    for hwmon in /sys/class/hwmon/hwmon*; do
+        [ -r "$hwmon/name" ] || continue
+        [ "$(cat "$hwmon/name" 2>/dev/null)" = "$target" ] || continue
+        printf '%s\n' "$hwmon"
+        return 0
+    done
+    return 1
+}
+
+read_cpu_temp_mc() {
+    cpu_hwmon="$(hwmon_by_name k10temp || true)"
+    if [ -n "$cpu_hwmon" ]; then
+        for sensor in temp2_input temp1_input temp3_input; do
+            path="$cpu_hwmon/$sensor"
+            [ -r "$path" ] || continue
+            value="$(cat "$path" 2>/dev/null || printf 0)"
+            case "$value" in
+                ''|*[!0-9-]*) continue ;;
+            esac
+            [ "$value" -gt 0 ] || continue
+            printf '%s\n' "$value"
+            return 0
+        done
+    fi
+    printf '0\n'
+}
+
+fan_hwmon() {
+    hwmon_by_name nct6795
+}
+
+write_if_needed() {
+    path="$1"
+    value="$2"
+    [ -w "$path" ] || return 1
+    current="$(cat "$path" 2>/dev/null || printf '')"
+    [ "$current" = "$value" ] && return 0
+    printf '%s\n' "$value" > "$path"
+}
+
+apply_once() {
+    verbose="${1:-0}"
+    fan_hwmon_path="$(fan_hwmon)"
+    pwm_path="$fan_hwmon_path/pwm${PWM_CHANNEL}"
+    enable_path="$fan_hwmon_path/pwm${PWM_CHANNEL}_enable"
+    rpm_path="$fan_hwmon_path/fan${PWM_CHANNEL}_input"
+    temp_mc="$(read_cpu_temp_mc)"
+    temp_c=$((temp_mc / 1000))
+    rpm=0
+    [ -r "$rpm_path" ] && rpm="$(cat "$rpm_path" 2>/dev/null || printf 0)"
+    enable="$(cat "$enable_path" 2>/dev/null || printf '?')"
+    pwm="$(cat "$pwm_path" 2>/dev/null || printf '?')"
+
+    if [ "$temp_c" -ge "$HIGH_TEMP_C" ]; then
+        write_if_needed "$enable_path" "$PWM_MANUAL_ENABLE"
+        write_if_needed "$pwm_path" "$PWM_FULL"
+        if [ "$LAST_MODE" != "force-full" ] || [ "$verbose" = "1" ]; then
+            log "force-full temp=${temp_c}C rpm=${rpm} pwm=${pwm} enable=${enable}"
+        fi
+        LAST_MODE="force-full"
+        return 0
+    fi
+
+    if [ "$temp_c" -le "$LOW_TEMP_C" ] && [ "$enable" != "$PWM_AUTO_ENABLE" ]; then
+        write_if_needed "$enable_path" "$PWM_AUTO_ENABLE"
+        log "restore-auto temp=${temp_c}C rpm=${rpm} pwm=${pwm} enable=${enable}"
+        LAST_MODE="auto"
+        return 0
+    fi
+
+    if [ "$verbose" = "1" ]; then
+        log "observe temp=${temp_c}C rpm=${rpm} pwm=${pwm} enable=${enable}"
+    fi
+    LAST_MODE="observe"
+}
+
+case "${1:-run}" in
+    once|status)
+        apply_once 1
+        ;;
+    run)
+        log "start high=${HIGH_TEMP_C}C low=${LOW_TEMP_C}C channel=${PWM_CHANNEL}"
+        while :; do
+            apply_once 0 || true
+            sleep "$INTERVAL_SECONDS"
+        done
+        ;;
+    *)
+        printf 'Usage: %s [run|once|status]\n' "$0" >&2
+        exit 2
+        ;;
+esac