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|
#!/bin/sh
set -u
PATH=/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/sbin:/usr/local/bin
MOUNTPOINT="${F3S_KEYS_MOUNTPOINT:-/keys}"
LABEL="${F3S_KEYS_LABEL:-F3S_KEYS}"
DEVICES="${F3S_KEYS_DEVICES:-/dev/ufs/${LABEL} /dev/da0}"
WAIT_SECONDS="${F3S_KEYS_WAIT_SECONDS:-10}"
MOUNT_OPTIONS="${F3S_KEYS_MOUNT_OPTIONS:-ro}"
LOGTAG="f3s-mount-keys"
STRICT="NO"
if [ "${1:-}" = "--strict" ]; then
STRICT="YES"
fi
log()
{
logger -t "$LOGTAG" "$*"
echo "$LOGTAG: $*"
}
fail()
{
log "$*"
if [ "$STRICT" = "YES" ]; then
exit 1
fi
exit 0
}
is_mounted()
{
mount | grep -Eq " on ${MOUNTPOINT} \\("
}
find_device()
{
for dev in $DEVICES; do
if [ -e "$dev" ]; then
echo "$dev"
return 0
fi
done
return 1
}
validate_keys()
{
missing="$(
zfs get -H -t filesystem,volume -s local -o value,name keylocation 2>/dev/null |
while IFS="$(printf '\t')" read -r keylocation dataset; do
case "$keylocation" in
file://"$MOUNTPOINT"/*)
keyfile="${keylocation#file://}"
if [ ! -s "$keyfile" ] || [ ! -r "$keyfile" ]; then
echo "${dataset}:${keyfile}"
fi
;;
esac
done
)"
if [ -n "$missing" ]; then
echo "$missing" | while IFS=: read -r dataset keyfile; do
log "key file for ${dataset} is missing or unreadable: ${keyfile}"
done
return 1
fi
return 0
}
if is_mounted; then
log "$MOUNTPOINT is already mounted"
validate_keys || true
exit 0
fi
mkdir -p "$MOUNTPOINT" || fail "could not create $MOUNTPOINT"
chmod 700 "$MOUNTPOINT" 2>/dev/null || true
i=0
dev=""
while [ "$i" -le "$WAIT_SECONDS" ]; do
if dev="$(find_device)"; then
break
fi
sleep 1
i=$((i + 1))
done
if [ -z "$dev" ]; then
fail "no USB key device found; checked: $DEVICES"
fi
if ! fsck_ufs -p "$dev"; then
fail "fsck_ufs failed for $dev; leaving $MOUNTPOINT unmounted"
fi
if ! mount -t ufs -o "$MOUNT_OPTIONS" "$dev" "$MOUNTPOINT"; then
fail "could not mount $dev on $MOUNTPOINT"
fi
log "mounted $dev on $MOUNTPOINT with options $MOUNT_OPTIONS"
validate_keys || true
exit 0
|
