busybox/examples/var_service/std_service_logger

#!/bin/sh

user=logger

exec >/dev/null 2>&1

service="${PWD%/log}"
service="${service##*/}"
logdir="/var/log/service/$service"

mkdir -p "$logdir"
chown -R "$user": "$logdir"
chmod -R go-rwxst,u+rwX "$logdir"
# TODO: if "$logdir/config" does not exist,
# based on service's preferences, write some setup in it:
# e.g. smaller nNUM directive ("I'm not that important,
# save 2 rather than default 10 one-megabyte log files")

# Convenience symlink in this log/ directory:
rm logdir
ln -s "$logdir" logdir

# Make current dir accessible to logger:
chmod a+rX .

args=""
test "$LOG_NOTIMESTAMP" || args="-tt"

exec \
env - PATH="$PATH" \
chpst -u "$user" -m $((20 * 1024*1024)) \
svlogd $args "$logdir"