diff options
author | Scott Murray <scott.murray@konsulko.com> | 2020-08-19 18:37:51 -0400 |
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committer | Scott Murray <scott.murray@konsulko.com> | 2020-08-19 18:37:51 -0400 |
commit | 5bdba822918cfffb69c0e1983661c32586bed590 (patch) | |
tree | b1fa11566e42190acc9b9cdda912a7cf2ed50ded /recipes-apis/agl-service-can-low-level/files/can-dev-mapping-helper.sh | |
parent | 1677ce2027c49763ec186018f8cbf8fcec64c04f (diff) |
Add can-dev-mapping-helperjellyfish_9.99.3jellyfish/9.99.39.99.3
Changes:
- Add a can-dev-mapping-helper.sh script and systemd unit to drive
it, the script checks if the CAN devices specified in the low-can
configuration file /etc/dev-mapping.conf exist, and if not brings
up corresponding virtual CAN devices.
- Add a systemd over-ride conf file for agl-service-can-low-level
that makes can-dev-mapping-helper a dependency. This should ensure
that the low-can binding always starts even if there are no physical
CAN hardware devices.
- Added a Before statement to sllin-demo.service to ensure that it
will run before can-dev-mapping-helper and ensure that lin_config
can create sllin0 correctly.
- Removed the sllin-demo-virtual systemd unit, as it will no longer
be required with can-dev-mapping-helper.
- Updated the /var/run paths in sllin-demo.service and associated
start_lin_demo.sh script to quiet systemd warnings about /var/run
usage.
Bug-AGL: SPEC-3540
Signed-off-by: Scott Murray <scott.murray@konsulko.com>
Change-Id: Ife02f75f57ac7bbdee6b02217e2ab657fe8c36e0
Diffstat (limited to 'recipes-apis/agl-service-can-low-level/files/can-dev-mapping-helper.sh')
-rw-r--r-- | recipes-apis/agl-service-can-low-level/files/can-dev-mapping-helper.sh | 36 |
1 files changed, 36 insertions, 0 deletions
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 |