bigguiness
commented
6 years ago I figured out a solution to avoid the noise in the journal.
The following patch first checks the id or the user. If it's root, the "sudo -A" is removed from the various "bash -c "echo ..." commands. If the if is non-root, the "sudo -A" is used.
Regards
--- config-pin.orig 2018-05-08 09:05:19.399629072 -0700 +++ config-pin 2018-05-08 09:11:12.341035364 -0700 @@ -1,5 +1,11 @@
!/bin/dash
+if ! id | grep -q root; then
- SUDO="sudo -A" +else
- SUDO= +fi
-
Some important directories for use later
OCPDIR=/sys/devices/ocp.* GPIODIR=/sys/class/gpio @@ -879,7 +885,7 @@
Expand filename using shell globbing
for FILE in $SLOTS ; do echo_std Loading $DTBO overlay - sudo -A bash -c "echo $DTBO > $SLOTS" || (echo_err "Error loading device tree overlay file: $DTBO" && exit 1)
- $SUDO bash -c "echo $DTBO > $SLOTS" || (echo_err "Error loading device tree overlay file: $DTBO" && exit 1) sleep 1 done fi @@ -1014,7 +1020,7 @@ eval GPIO="\$${PIN}_GPIO" FILE="$GPIODIR/gpio$GPIO/direction" if [ -e $FILE ] ; then
- sudo -A bash -c "echo $DIR > $FILE" || (echo_err "Cannot write gpio direction file: $FILE" && exit 1)
- $SUDO bash -c "echo $DIR > $FILE" || (echo_err "Cannot write gpio direction file: $FILE" && exit 1)
else
echo_err "WARNING: GPIO pin not exported, cannot set direction or value!"
fi
@@ -1024,13 +1030,13 @@
Expand filename using shell globbing
for FILE in $OCPDIR${PIN}_pinmux/state ; do echo_dbg "echo $MODE > $FILE" - sudo -A bash -c "echo $MODE > $FILE" || (echo_err "Cannot write pinmux file: $FILE" && exit 1)
- $SUDO bash -c "echo $MODE > $FILE" || (echo_err "Cannot write pinmux file: $FILE" && exit 1)
done
else
Expand filename using shell globbing
for FILE in $OCPDIR/${PIN}_pinmux.*/state ; do echo_dbg "echo $MODE > $FILE" - sudo -A bash -c "echo $MODE > $FILE" || (echo_err "Cannot write pinmux file: $FILE" && exit 1)
- $SUDO bash -c "echo $MODE > $FILE" || (echo_err "Cannot write pinmux file: $FILE" && exit 1) done fi fi
I have a systemd service that uses config-pin to load the cape-universal overlay and then uses a file with config-pin to configure the pins. When it starts I get a bunch of noise in the systemd journal like:
Apr 06 10:11:21 beaglebone sudo[547]: root : TTY=unknown ; PWD=/ ; USER=root ; COMMAND=/bin/bash -c echo cape-universal > /sys/devices/bone_capemgr.*/slots Apr 06 10:11:21 beaglebone sudo[547]: pam_unix(sudo:session): session opened for user root by (uid=0) Apr 06 10:11:22 beaglebone sudo[547]: pam_unix(sudo:session): session closed for user root Apr 06 10:11:23 beaglebone sudo[789]: root : TTY=unknown ; PWD=/ ; USER=root ; COMMAND=/bin/bash -c echo low > /sys/class/gpio/gpio66/direction Apr 06 10:11:23 beaglebone sudo[789]: pam_unix(sudo:session): session opened for user root by (uid=0) Apr 06 10:11:23 beaglebone sudo[789]: pam_unix(sudo:session): session closed for user root Apr 06 10:11:23 beaglebone sudo[803]: root : TTY=unknown ; PWD=/ ; USER=root ; COMMAND=/bin/bash -c echo gpio > /sys/devices/ocp.3/P8_07_pinmux.14/state Apr 06 10:11:23 beaglebone sudo[803]: pam_unix(sudo:session): session opened for user root by (uid=0) Apr 06 10:11:23 beaglebone sudo[803]: pam_unix(sudo:session): session closed for user root
There are similar messages for each direction/state setting.
Is there anyway to suppress these messages? They add a lot of noise to the journal.
Thanks