#!/bin/sh set -eu # Print the command and run it run() { echo "$@" "$@" } if [ -x /usr/bin/systemd-sysusers ]; then # Use systemd-sysusers and let it read the input directly from stdin /usr/bin/systemd-sysusers - # We need to clear the nscd cache, as systemd-sysusers could have # triggered a negative cache entry if [ -x /usr/sbin/nscd ]; then /usr/sbin/nscd -i passwd /usr/sbin/nscd -i group fi else # Absolute path to busybox, if found busybox= for i in /bin/busybox /usr/bin/busybox; do [ -x "$i" ] && busybox=$i; done while read LINE do # "eval set" to do proper splitting while respecting quotes eval set -- $LINE case "${1-}" in \#*|"") ;; g) shift ARGUMENTS="$1" if [ -n "${2-}" ] && [ "$2" != "-" ]; then ARGUMENTS="-g $2 $ARGUMENTS" fi if ! /usr/bin/getent group "$1" >> /dev/null; then if [ -x "/usr/sbin/groupadd" ]; then run /usr/sbin/groupadd -r $ARGUMENTS elif [ -x "$busybox" ]; then run $busybox addgroup -S $ARGUMENTS else echo "ERROR: neither groupadd nor busybox found!" exit 1 fi fi ;; u) shift ARGUMENTS="$1" if [ -n "${2-}" ] && [ "$2" != "-" ]; then ARGUMENTS="-u $2 $ARGUMENTS" fi homedir="/" # If null, empty or '-' if [ "${4:--}" != "-" ]; then homedir="$4" fi if [ -x /usr/sbin/useradd ]; then if ! /usr/bin/getent passwd "$1" >> /dev/null; then # this is useradd/shadow specific if /usr/bin/getent group "$1" >> /dev/null; then ARGUMENTS="-g $1 $ARGUMENTS" else ARGUMENTS="-U $ARGUMENTS" fi run /usr/sbin/useradd -r -s /sbin/nologin -c "$3" -d "${homedir}" $ARGUMENTS fi elif [ -x "$busybox" ]; then /usr/bin/getent group "$1" >> /dev/null || $busybox addgroup -S "$1" if ! /usr/bin/getent passwd "$1" >> /dev/null; then run $busybox adduser -S -H -s /sbin/nologin -g "$3" -G "$1" -h "${homedir}" $ARGUMENTS fi else echo "ERROR: neither useradd nor busybox found!" exit 1 fi ;; m) shift if [ -x /usr/sbin/usermod ] ; then run /usr/sbin/usermod -a -G $2 $1 elif [ -x "$busybox" ]; then run $busybox addgroup $1 $2 else echo "ERROR: neither usermod nor busybox found!" exit 1 fi ;; r) echo "range option ignored: \"$LINE\"" ;; *) echo "Syntax Error: \"$LINE\"" exit 1 ;; esac done fi