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|
#!/bin/sh
fmt=${1:-"ntfs1"}
dev=${2:-/dev/vdb}
LABEL=${LABEL:-"dos"}
PARTS=""
SIZE_100M="$((100*2048))"
UUID_LINUX="0FC63DAF-8483-4772-8E79-3D69D8477DE4"
UUID_MSFT_RES="E3C9E316-0B5C-4DB8-817D-F92DF00215AE"
UUID_MSFT_DATA="eBD0A0A2-B9E5-4433-87C0-68B6B72699C7"
DOS_LINUX=83
DOS_NTFS=7
if [ "$LABEL" = "dos" ]; then
TYPE_MSFT_DATA="${DOS_NTFS}"
TYPE_LINUX="${DOS_LINUX}"
TYPE_MSFT_RES="${DOS_NTFS}"
else
TYPE_MSFT_DATA="${UUID_MSFT_DATA}"
TYPE_LINUX="${UUID_LINUX}"
TYPE_MSFT_RES="${UUID_MSFT_RES}"
fi
msg() { echo "$@" 1>&2; }
rerror() { local r=$?; echo "$@" 1>&2; return $r; }
fail() { echo "$@" 1>&2; exit 1; }
set -e
pt_ntfs1() {
local dev="$1"
PARTS="${dev}1"
do_sfdisk "$dev" "1 : start=2048, type=${TYPE_MSFT_DATA}, size=${SIZE_100M}"
}
pt_ntfs2() {
local dev="$1"
PARTS="${dev}1 ${dev}2"
do_sfdisk "$dev" "
1 : start=2048, type=${TYPE_MSFT_RES}, size=${SIZE_100M}
2 : type=${TYPE_MSFT_DATA}, size=${SIZE_100M}"
}
pt_linux1() {
local dev="$1"
PARTS="${dev}1"
do_sfdisk "$dev" "1 : start=2048, type=${TYPE_LINUX}, size=${SIZE_100M}"
}
pt_none() {
PARTS=""
msg "no disk label"
}
qrun() {
local out=""
[ "$1" = "--quiet" ] && shift || msg "$@"
out=$("$@" 2>&1) ||
{ rerror "Failed[$?]: $*: $out"; return; }
}
mkfs_ntfs() {
qrun mkfs.ntfs --fast "$1"
}
mkfs_ext4() {
qrun mkfs.ext4 -F "$1"
}
do_sfdisk() {
local out="" dev="$1" data="$2" label="${3:-${LABEL}}" pdata=""
local cr="
"
[ -n "$data" ] || data=$(cat)
pdata="label: $label${cr}unit: sectors$cr${data}"
echo "sfdisk --force $dev <<EOF"
echo "$pdata" | sed -e '/^$/d' -e 's/^/ /'
echo "EOF"
echo "$pdata" | qrun --quiet sfdisk --force "$dev"
udevadm settle
}
[ "$(id -u)" = "0" ] || fail "not root"
swapoff -a || :
umount /mnt >/dev/null 2>&1 || :
msg "wiping $dev"
# 4 of them to wipe any old filesystem data on first part
qrun --quiet python3 -c "import sys;
buf = b'\\0' * 1024 * 1024 * 4
with open(sys.argv[1], 'wb+') as fp:
fp.write(buf)
fp.seek(-(len(buf)), 2)
fp.write(buf)" "$dev"
udevadm settle
sfile="sfdisk.in"
case "$fmt" in
ntfs1)
pt_ntfs1 "$dev"
mkfs_ntfs "${dev}1"
;;
ntfs2)
pt_ntfs2 "$dev"
mkfs_ntfs "${dev}2"
;;
none)
pt_none "$dev"
;;
ext4)
pt_linux1 "$dev"
mkfs_ext4 "${dev}1";;
*) echo "unknown $fmt"; exit 1;;
esac
echo
echo -- sfdisk --list $dev --
sfdisk --list $dev | sed 's,^, ,'
echo -- blkid $dev $PARTS --
blkid "$dev" ${PARTS} | sed 's,^, ,'
|
