Use flock to protect init script from concurrent execution
(of the same script).
Important for services which generate native config files.
Signed-off-by: Roman Yeryomin <ro...@advem.lv>
Signed-off-by: Andrejs Hanins <ahan...@gmail.com>
---
package/system/procd/files/procd.sh | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/package/system/procd/files/procd.sh
b/package/system/procd/files/procd.sh
index 91e2371d62..b8d3513b1e 100644
--- a/package/system/procd/files/procd.sh
+++ b/package/system/procd/files/procd.sh
@@ -38,6 +38,20 @@
PROCD_RELOAD_DELAY=1000
_PROCD_SERVICE=
+procd_lock() {
+ local basescript=$(readlink "$initscript")
+ local service_name="$(basename ${basescript:-$initscript})"
+
+ flock -n 1000 &> /dev/null
+ if [ "$?" != "0" ]; then
+ exec 1000>/var/lock/procd_${service_name}.lock
+ flock 1000
+ if [ "$?" != "0" ]; then
+ logger "warning: procd flock for $service_name failed"
+ fi
+ fi
+}
+
_procd_call() {
local old_cb
@@ -47,6 +61,7 @@ _procd_call() {
}
_procd_wrapper() {
+ procd_lock
while [ -n "$1" ]; do
eval "$1() { _procd_call _$1 \"\$@\"; }"
shift
--
2.14.1
_______________________________________________
Lede-dev mailing list
Lede-dev@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/lede-dev
