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|
require_tmpdir() {
if [ -z "$OS_PROBER_TMP" ]; then
if type mktemp >/dev/null 2>&1; then
export OS_PROBER_TMP="$(mktemp -d /tmp/os-prober.XXXXXX)"
trap "rm -rf $OS_PROBER_TMP" EXIT HUP INT QUIT TERM
else
export OS_PROBER_TMP=/tmp
fi
fi
}
count_for() {
_labelprefix=$1
_result=$(grep "^${_labelprefix} " /var/lib/os-prober/labels 2>/dev/null || true)
if [ -z "$_result" ]; then
return
else
echo "$_result" | cut -d' ' -f2
fi
}
count_next_label() {
require_tmpdir
_labelprefix=$1
_cfor="$(count_for ${_labelprefix})"
if [ -z "$_cfor" ]; then
echo "${_labelprefix} 1" >> /var/lib/os-prober/labels
else
sed "s/^${_labelprefix} ${_cfor}/${_labelprefix} $(($_cfor + 1))/" /var/lib/os-prober/labels > "$OS_PROBER_TMP/os-prober.tmp"
mv "$OS_PROBER_TMP/os-prober.tmp" /var/lib/os-prober/labels
fi
echo "${_labelprefix}${_cfor}"
}
log() {
logger -t "$(basename $0)" "$@"
}
error() {
log "error: $@"
}
warn() {
log "warning: $@"
}
debug() {
log "debug: $@"
}
result () {
log "result:" "$@"
echo "$@"
}
# shim to make it easier to use os-prober outside d-i
if ! type mapdevfs >/dev/null 2>&1; then
mapdevfs () {
readlink -f "$1"
}
fi
item_in_dir () {
if [ "$1" = "-q" ]; then
q="-q"
shift 1
else
q=""
fi
# find files with any case
ls -1 "$2" | grep $q -i "^$1$"
}
parse_proc_mounts () {
while read line; do
set -- $line
echo "$(mapdevfs $1) $2 $3"
done
}
parsefstab () {
while read line; do
case "$line" in
"#"*)
:
;;
*)
set -- $line
echo $1 $2 $3
;;
esac
done
}
linux_mount_boot () {
partition="$1"
tmpmnt="$2"
bootpart=""
mounted=""
if [ -e "$tmpmnt/etc/fstab" ]; then
# Try to mount any /boot partition.
bootmnt=$(parsefstab < $tmpmnt/etc/fstab | grep " /boot ") || true
if [ -n "$bootmnt" ]; then
set -- $bootmnt
boottomnt=""
# This is an awful hack and isn't guaranteed to
# work, but is the best we can do until busybox
# mount supports -L/-U.
if [ -x "$tmpmnt/bin/mount" ]; then
smart_ldlp="$tmpmnt/lib"
smart_mount="$tmpmnt/bin/mount"
elif [ -x /target/bin/mount ]; then
smart_ldlp=/target/lib
smart_mount=/target/bin/mount
else
smart_ldlp=
smart_mount=mount
fi
if [ -e "$1" ]; then
bootpart="$1"
boottomnt="$1"
elif [ -e "$tmpmnt/$1" ]; then
bootpart="$1"
boottomnt="$tmpmnt/$1"
elif [ -e "/target/$1" ]; then
bootpart="$1"
boottomnt="/target/$1"
elif echo "$1" | grep -q "LABEL="; then
debug "mounting boot partition by label for linux system on $partition: $1"
label=$(echo "$1" | cut -d = -f 2)
if LD_LIBRARY_PATH=$smart_ldlp $smart_mount -L "$label" -o ro $tmpmnt/boot -t "$3"; then
mounted=1
bootpart=$(mount | grep $tmpmnt/boot | cut -d " " -f 1)
else
error "failed to mount by label"
fi
elif echo "$1" | grep -q "UUID="; then
debug "mounting boot partition by UUID for linux system on $partition: $1"
uuid=$(echo "$1" | cut -d = -f 2)
if LD_LIBRARY_PATH=$smart_ldlp $smart_mount -U "$uuid" -o ro $tmpmnt/boot -t "$3"; then
mounted=1
bootpart=$(mount | grep $tmpmnt/boot | cut -d " " -f 1)
else
error "failed to mount by UUID"
fi
else
bootpart=""
fi
if [ ! "$mounted" ]; then
if [ -z "$bootpart" ]; then
debug "found boot partition $1 for linux system on $partition, but cannot map to existing device"
else
debug "found boot partition $bootpart for linux system on $partition"
if mount -o ro "$boottomnt" $tmpmnt/boot -t "$3"; then
mounted=1
else
error "failed to mount $boottomnt on $tmpmnt/boot"
fi
fi
fi
fi
fi
if [ -z "$bootpart" ]; then
bootpart="$partition"
fi
if [ -z "$mounted" ]; then
mounted=0
fi
echo "$bootpart $mounted"
}
|
