[OpenWrt-Devel] [PATCH v2 1/2] base-files: add leds migration

[Tomasz Maciej Nowak]

Currently leds migration scripts in ar71xx and lantiq share a lot of
logic and introducing leds migration to another target would mean
copying this code, again. Therefore add common logic to library in
base-files package.

Suggested-by: Petr Štetiar <ynezz at true.cz>
Signed-off-by: Petr Štetiar <ynezz at true.cz>
Signed-off-by: Tomasz Maciej Nowak <tomek_n at o2.pl>
---
Changes in v2 to:
"base-files: add leds migration"
As OpenWrt is close to branch new stable version I removed and postponed
the ar71xx and lantiq target migration to not introduce new bugs.

 .../files/lib/functions/migrations.sh         | 39 +++++++++++++++++++
 1 file changed, 39 insertions(+)
 create mode 100644 package/base-files/files/lib/functions/migrations.sh

diff --git a/package/base-files/files/lib/functions/migrations.sh b/package/base-files/files/lib/functions/migrations.sh
new file mode 100644
index 0000000000..b180a0242f
--- /dev/null
+++ b/package/base-files/files/lib/functions/migrations.sh
@@ -0,0 +1,39 @@
+#!/bin/sh
+
+. /lib/functions.sh
+
+migrate_led_sysfs() {
+	local cfg="$1"; shift
+	local tuples="$@"
+	local sysfs
+	local name
+
+	config_get sysfs ${cfg} sysfs
+	config_get name ${cfg} name
+
+	[ -z "${sysfs}" ] && return
+
+	for tuple in ${tuples}; do
+		local old=${tuple%=*}
+		local new=${tuple#*=}
+		local new_sysfs
+
+		new_sysfs=$(echo ${sysfs} | sed "s/${old}/${new}/")
+
+		[ "${new_sysfs}" = "${sysfs}" ] && continue
+
+		uci set system.${cfg}.sysfs="${new_sysfs}"
+
+		logger -t led-migration "sysfs option of LED \"${name}\" updated to ${new_sysfs}"
+	done;
+}
+
+migrate_leds() {
+	config_load system
+	config_foreach migrate_led_sysfs led "$@"
+}
+
+migrations_apply() {
+	local realm="$1"
+	[ -n "$(uci changes ${realm})" ] && uci -q commit ${realm}
+}
-- 
2.21.0


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