#! /bin/sh -ex
PATH=/bin:$HOME/bin:$PATH
eval $(tmpdir -b)
sockdir=${TMPDIR?}/.ssh-agent.$(hostname).${USER-$(id -un)}
if [ -S $sockdir/sock ]; then
  set +e; ssh-add -l >/dev/null 2>&1; rc=$?; set -e
  case $rc in 0) exit 0 ;; esac
  kill $(cat $sockdir/pid) || :
  rm -f $sockdir/pid $sockdir/sock
fi
mkdir -p -m700 $sockdir
(cd /; exec run ssh-pageant -d -a$sockdir/sock >/dev/null 2>&1)&
echo $! >$sockdir/pid