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|
#!/bin/sh
PREFIX=
. "$PREFIX/lib/libalpine.sh"
usage() {
cat <<-__EOF__
usage: setup-lbu [-hq] [MEDIA]
Setup lbu media settings.
MEDIA is optional mountpoint under /media
options:
-h Show this help
-q Quietly pick best suggestion. Only prompts user if unsure.
__EOF__
exit 1
}
get_mnt_line() {
local mntpoint="$1"
local mnttab="$2"
local media=${mntpoint#/media/}
local uuid=
# replace the device with UUID since the device is in /proc/mounts
# and we want the UUID in fstab
if [ "${media#UUID}" != "$media" ]; then
uuid="$media"
fi
# we need filter out codepage=... in mount option as it makes
# mount fail if its there.
awk -v uuid="$uuid" "\$2 == \"$mntpoint\" {
if (uuid)
\$1 = uuid;
gsub(/,codepage=.*,/, \",\", \$4);
print \$0;
}" "$mnttab"
}
is_mounted() {
test -n "$(get_mnt_line $1 /proc/mounts)"
}
is_in_fstab() {
test -n "$(get_mnt_line $1 /etc/fstab)"
}
set_media() {
local media="${1%/}" # strip trailing /
local mnt=/media/$media
if [ -d "$media" ] && [ "${media#/media/}" != "$media" ]; then
mnt="$media"
media=${mnt#/media/}
fi
if [ "$ROOT" = "/" ] && ! [ -d "$mnt" ]; then
echo "$mnt: not a directory" >&2
exit 1
fi
# set LBU_MEDIA in /etc/lbu/lbu.conf
if [ -f "${ROOT}"etc/lbu/lbu.conf ]; then
sed -e "/^\#\?[[:space:]]*LBU_MEDIA=.*/s/.*/LBU_MEDIA=$media/" \
-i "${ROOT}"etc/lbu/lbu.conf
if ! egrep -q '^LBU_MEDIA=' "${ROOT}"etc/lbu/lbu.conf; then
echo "LBU_MEDIA=$media" >> "${ROOT}"etc/lbu/lbu.conf
fi
else
mkdir -p "${ROOT}"etc/lbu
echo "LBU_MEDIA=$media" >> "${ROOT}"etc/lbu/lbu.conf
fi
if [ -n "$ROOT" ] && [ "$ROOT" != "/" ]; then
return
fi
# append to fstab if its missing
if ! is_in_fstab $mnt && is_mounted $mnt; then
get_mnt_line "$mnt" /proc/mounts >> /etc/fstab
fi
# hack in case we have alpine_dev mounted on /media/usbdisk but
# lbu is stored on /media/usb
# Otherwise we get issues when we do lbu commit.
if [ "$media" = "usb" ] && is_mounted /media/usbdisk; then
mount --move /media/usbdisk /media/usb
elif [ "$media" = "usbdisk" ] && is_mounted /media/usb; then
mount --move /media/usb /media/usbdisk
fi
}
while getopts "hq" opt; do
case $opt in
h) usage;;
q) quiet=1;;
esac
done
shift $(($OPTIND - 1))
# check if MEDIA option was given
if [ -n "$1" ]; then
set_media "$1"
exit
fi
alternatives=
suggestion="none"
for dir in /media/*; do
[ -d "$dir" ] || continue
[ "$dir" = "/media/cdrom" ] && continue
alternatives="$alternatives, '${dir#/media/}'"
if is_mounted $dir; then
suggestion=${dir#/media/}
[ -n "$quiet" ] && media=$suggestion
fi
done
# strip leading , + space
alternatives=${alternatives#, }
# if nothing is mounted (or boot from cdrom)
usbmnt=$(awk '$1 == "/dev/usbdisk" {print $2}' /proc/mounts)
if [ -z "$suggestion" ] && [ -n "$usbmnt" ]; then
suggestion=${usbmnt#/media/}
if [ -n "$quiet" ] && [ -e /dev/usbdisk ]; then
media=$suggestion
fi
fi
while [ -z "$media" ]; do
echo -n "Enter where to store configs ($alternatives or 'none') [$suggestion]: "
default_read media $suggestion
if [ "$media" = "none" ] || [ -d "/media/$media" ]; then
break
fi
echo "/media/$media is not a directory. Please try again."
media=
done
if [ "$media" = "none" ]; then
exit 0
fi
set_media "$media"
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