From 1d0d343454b1cf3b3eea5cc8ffd2bc08e0d52ef1 Mon Sep 17 00:00:00 2001
From: root <root@mother.pipebreaker.pl>
Date: Tue, 13 Aug 2019 18:46:42 +0200
Subject: [PATCH] =?UTF-8?q?bcache:=20wirtualny=20prze=C5=82=C4=85cznik=20d?=
 =?UTF-8?q?o=20zmiany=20trybu=20pracy=20bcache?=
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  Zastosowanie: włączenie szybszego, ale mniej bezpiecznego trybu
w czasie oglądania czegoś w Kodi.

  Wymaga unitu systemd toggle-bcache@.service:
---
[Unit]
Description=toggle bcache mode for all devices

[Service]
Type=oneshot
WorkingDirectory=/sys
ExecStart=/usr/bin/fd --full-path bcache/cache_mode --exec sh -c "echo %i > {}; "
ProtectSystem=strict
ProtectHome=yes
PrivateTmp=yes
ProtectControlGroups=yes
---

 Oraz regułki polkit openhab.rules:
---

polkit.addRule(function(action, subject) {
	if (action.id == "org.freedesktop.systemd1.manage-units") {
		var unit = action.lookup("unit");
		if (unit == "toggle-bcache@writethrough.service" ||
		    unit == "toggle-bcache@writeback.service") {
			var verb = action.lookup("verb");
			if (verb == "start" && subject.user == "openhabik") {
				return polkit.Result.YES;
			}
		}
	}
});
---
---
 items/virtual.items    | 3 +++
 rules/salon.kodi.rules | 3 +++
 sitemaps/tech.sitemap  | 2 ++
 3 files changed, 8 insertions(+)

diff --git a/items/virtual.items b/items/virtual.items
index 664fbc6..52650e7 100644
--- a/items/virtual.items
+++ b/items/virtual.items
@@ -1,3 +1,6 @@
 
 /* czy jesteśmy dłużej poza domem? */
 Switch sHolidayVacancy "Jesteśmy poza domem"
+
+Switch sBCacheWriteback "Bcache w trybie writeback" { exec=">[ON:systemctl start toggle-bcache@writeback] >[OFF:systemctl start toggle-bcache@writethrough]" }
+
diff --git a/rules/salon.kodi.rules b/rules/salon.kodi.rules
index 24668b7..e578737 100644
--- a/rules/salon.kodi.rules
+++ b/rules/salon.kodi.rules
@@ -8,6 +8,8 @@ then
 
 	Mpd_quodlibet_StartStop_expected.postUpdate(Mpd_quodlibet_StartStop.state)
 	Mpd_quodlibet_StartStop.sendCommand(OFF)
+
+	sBCacheWriteback.sendCommand(ON)
 end
 
 
@@ -41,5 +43,6 @@ then
 		sendCommand(sOWFS01, ON)
 	}
 
+	sBCacheWriteback.sendCommand(OFF)
 end
 
diff --git a/sitemaps/tech.sitemap b/sitemaps/tech.sitemap
index d27f13f..cb407d9 100644
--- a/sitemaps/tech.sitemap
+++ b/sitemaps/tech.sitemap
@@ -3,6 +3,8 @@ sitemap pbrk label="Szczegóły techniczne"
 	Frame {
 		Text item=dtSunset_Time
 		Text item=wClouds
+		Switch item=sHolidayVacancy
+		Switch item=sBCacheWriteback
 	}
 
 	Group label="Łączność" {