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-rw-r--r--recipes-apis/agl-service-can-low-level/files/can-dev-mapping-helper.conf3
-rw-r--r--recipes-apis/agl-service-can-low-level/files/can-dev-mapping-helper.service6
-rw-r--r--recipes-apis/agl-service-can-low-level/files/can-dev-mapping-helper.sh36
3 files changed, 45 insertions, 0 deletions
diff --git a/recipes-apis/agl-service-can-low-level/files/can-dev-mapping-helper.conf b/recipes-apis/agl-service-can-low-level/files/can-dev-mapping-helper.conf
new file mode 100644
index 000000000..c89cc4d87
--- /dev/null
+++ b/recipes-apis/agl-service-can-low-level/files/can-dev-mapping-helper.conf
@@ -0,0 +1,3 @@
+[Unit]
+Wants=can-dev-mapping-helper.service
+After=can-dev-mapping-helper.service
diff --git a/recipes-apis/agl-service-can-low-level/files/can-dev-mapping-helper.service b/recipes-apis/agl-service-can-low-level/files/can-dev-mapping-helper.service
new file mode 100644
index 000000000..0436716cb
--- /dev/null
+++ b/recipes-apis/agl-service-can-low-level/files/can-dev-mapping-helper.service
@@ -0,0 +1,6 @@
+[Unit]
+Description=CAN interface helper
+
+[Service]
+ExecStart=/usr/sbin/can-dev-mapping-helper.sh
+Type=oneshot
diff --git a/recipes-apis/agl-service-can-low-level/files/can-dev-mapping-helper.sh b/recipes-apis/agl-service-can-low-level/files/can-dev-mapping-helper.sh
new file mode 100644
index 000000000..c81014f3e
--- /dev/null
+++ b/recipes-apis/agl-service-can-low-level/files/can-dev-mapping-helper.sh
@@ -0,0 +1,36 @@
+#!/bin/bash
+
+#
+# Script to bring up CAN interfaces configured in /etc/dev-mapping.conf
+# as vcan interfaces if no physical interface is present.
+#
+
+vcan_up() {
+ if [ -n "$1" ]; then
+ echo "Bringing up $1 as virtual CAN device"
+ ip link add dev $1 type vcan
+ ip link set up $1
+ fi
+}
+
+if [ ! -f /etc/dev-mapping.conf ]; then
+ exit 0
+fi
+
+hs=$(grep ^hs= /etc/dev-mapping.conf |cut -d= -f2 |tr -d '"')
+ls=$(grep ^ls= /etc/dev-mapping.conf |cut -d= -f2 |tr -d '"')
+
+if [ -n "$hs" ]; then
+ echo "Checking $hs"
+ if ! ifconfig $hs >/dev/null 2>&1; then
+ vcan_up $hs
+ fi
+fi
+if [ -n "$ls" -a "$ls" != "$hs" ]; then
+ echo "Checking $ls"
+ if ! ifconfig $ls >/dev/null 2>&1; then
+ vcan_up $ls
+ fi
+fi
+
+exit 0