setup-disk.in 24.8 KB
Newer Older
Natanael Copa's avatar
Natanael Copa committed
1 2 3 4 5
#!/bin/sh

PREFIX=
. "$PREFIX/lib/libalpine.sh"

6
MBR=${MBR:-"/usr/share/syslinux/mbr.bin"}
7 8
ROOTFS=${ROOTFS:-ext4}
BOOTFS=${BOOTFS:-ext4}
9
VARFS=${VARFS:-ext4}
Natanael Copa's avatar
Natanael Copa committed
10

11 12 13
# default location for mounted root
SYSROOT=${SYSROOT:-/mnt}

Natanael Copa's avatar
Natanael Copa committed
14 15 16 17 18 19 20 21 22 23
in_list() {
	local i="$1"
	shift
	while [ $# -gt 0 ]; do
		[ "$i" = "$1" ] && return 0
		shift
	done
	return 1
}

24 25 26 27 28 29 30 31 32 33 34
all_in_list() {
	local needle="$1"
	local i
	[ -z "$needle" ] && return 1
	shift
	for i in $needle; do
		in_list "$i" $@ || return 1
	done
	return 0
}

35 36 37 38 39 40 41 42
# wrapper to only show given device
_blkid() {
	blkid | grep "^$1:"
}

# if given device have an UUID display it, otherwise return the device
uuid_or_device() {
	local i=
43 44 45
	case "$1" in
		/dev/md*) echo "$1" && return 0;;
	esac
46 47 48 49 50 51 52 53 54 55 56 57 58
	for i in $(_blkid "$1"); do
		case "$i" in
			UUID=*) eval $i;;
		esac
	done
	if [ -n "$UUID" ]; then
		echo "UUID=$UUID"
	else
		echo "$1"
	fi
}

# generate an fstab from a given mountpoint. Convert to UUID if possible
59
enumerate_fstab() {
60
	local mnt="$1"
61
	local fs_spec= fs_file= fs_vfstype= fs_mntops= fs_freq= fs_passno=
62
	[ -z "$mnt" ] && return
63 64
	local escaped_mnt=$(echo $mnt | sed -e 's:/*$::' -e 's:/:\\/:g')
	awk "\$2 ~ /^$escaped_mnt(\/|\$)/ {print \$0}" /proc/mounts | \
65
		sed "s:$mnt:/:g; s: :\t:g" | sed -E 's:/+:/:g' | \
66 67 68
		while read fs_spec fs_file fs_vfstype fs_mntops fs_freq fs_passno; do
			echo -e "$(uuid_or_device $fs_spec)\t${fs_file}\t${fs_vfstype}\t${fs_mntops} ${fs_freq} ${fs_passno}"
		done
69 70
}

71 72 73 74 75
is_vmware() {
	grep -q VMware /proc/scsi/scsi 2>/dev/null \
		|| grep -q VMware /proc/ide/hd*/model 2>/dev/null
}

76 77 78 79 80
# return true (0) if given device is lvm
is_lvm() {
	lvs "$1" >/dev/null 2>&1
}

81 82
# Find the disk device from given partition
disk_from_part() {
83 84
	# we need convert cciss/c0d0* cciss!c0d0*...
	local i= part=$(echo ${1#/dev/} | sed 's:/:!:g')
85 86
	for i in /sys/block/*/$part; do
		i=${i%/*}
87
		# ...and back from cciss!c0d0 to cciss/c0d0
88 89 90 91
		if [ -b "/dev/${i##*/}" ]; then
			echo "/dev/${i##*/}" | sed 's:!:/:g'
			return 0
		fi
92 93 94 95
	done
	return 1
}

96 97 98 99 100 101 102 103 104 105 106 107 108 109
unpack_apkovl() {
	local ovl="$1"
	local dest="$2"
	local suffix=${ovl##*.}
	local i
	ovlfiles=/tmp/ovlfiles
	if [ "$suffix" = "gz" ]; then
		if ! tar -C "$dest" --numeric-owner -zxvf "$ovl" > $ovlfiles; then
			echo -n "Continue anyway? [Y/n]: "
			read i
			case "$i" in
				n*|N*) return 1;;
			esac
		fi
110
		return 0
111 112
	fi

113
	apk add --quiet openssl
114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130

	if ! openssl list-cipher-commands | grep "^$suffix$" > /dev/null; then
		errstr="Cipher $suffix is not supported"
		return 1
	fi
	local count=0
	# beep
	echo -e "\007"
	while [ $count -lt 3 ]; do
		openssl enc -d -$suffix -in "$ovl" | tar --numeric-owner \
			-C "$dest" -zxv >$ovlfiles 2>/dev/null && return 0
		count=$(( $count + 1 ))
	done
	ovlfiles=
	return 1
}

131 132 133 134 135 136 137 138
# find filesystem of given mounted dir
find_mount_fs() {
	local mount_point="$1"
	awk "\$2 == \"$mount_point\" {print \$3}" /proc/mounts | tail -n 1
}

# find device for given mounted dir
find_mount_dev() {
139
	local mnt="$1"
140 141 142 143
	awk "\$2 == \"$mnt\" { print \$1 }" /proc/mounts | tail -n 1
}

supported_boot_fs() {
144
	local supported="ext2 ext3 ext4 btrfs"
145 146 147 148 149 150 151 152
	local fs=
	for fs in $supported; do
		[ "$fs" = "$1" ] && return 0
	done
	echo "$1 is not supported. Only supported are: $supported" >&2
	return 1
}

153 154
find_volume_group() {
	local lv=${1##*/}
155
	lvs --noheadings "$1" | awk '{print $2}'
156 157 158 159 160 161 162
}

find_pvs_in_vg() {
	local vg="$1"
	pvs --noheadings | awk "\$2 == \"$vg\" {print \$1}"
}

163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187
# echo current grsecurity option and set new
set_grsec() {
	local key="$1" value="$2"
	if ! [ -e /proc/sys/kernel/grsecurity/$key ]; then
		return 0
	fi
	cat /proc/sys/kernel/grsecurity/$key
	echo $value > /proc/sys/kernel/grsecurity/$key
}

init_chroot_mounts() {
	local mnt="$1" i=
	for i in proc dev; do
		mkdir -p "$mnt"/$i
		mount --bind /$i "$mnt"/$i
	done
}

cleanup_chroot_mounts() {
	local mnt="$1" i=
	for i in proc dev; do
		umount "$mnt"/$i
	done
}

188 189 190 191 192 193 194 195 196
has_bootopt() {
	local opt="$1"
	set -- $(cat /proc/cmdline)
	for i; do
		[ "$i" = "$opt" ] && return 0
	done
	return 1
}

197
install_mounted_root() {
198
	local mnt="$1" mnt_boot= boot_fs= root_fs=
199
	local initfs_features="ata base ide scsi usb virtio"
200
	local pvs= dev= rootdev= bootdev= extlinux_raidopt= root= modules=
201
	local kernel_opts="quiet"
202

203
	rootdev=$(find_mount_dev "$mnt")
204 205 206 207
	if [ -z "$rootdev" ]; then
		echo "$mnt does not seem to be a mount point" >&2
		return 1
	fi
208
	root_fs=$(find_mount_fs "$mnt")
209 210 211 212
	initfs_features="$initfs_features $root_fs"

	if is_lvm "$rootdev"; then
		initfs_features="$initfs_features lvm"
213 214
		local vg=$(find_volume_group "$rootdev")
		pvs=$(find_pvs_in_vg $vg)
215 216
	fi

217

218 219 220
	bootdev=$(find_mount_dev "$mnt"/boot)
	if [ -z "$bootdev" ]; then
		bootdev=$rootdev
221
		mnt_boot="$mnt"
222 223 224 225 226 227
	else
		mnt_boot="$mnt"/boot
	fi
	boot_fs=$(find_mount_fs "$mnt_boot")
	supported_boot_fs "$boot_fs" || return 1

228 229
	# Check if we boot from raid so we can pass proper option to
	# extlinux later.
230
	if [ -e "/sys/block/${bootdev#/dev/}/md" ]; then
231
		extlinux_raidopt="--raid"
232
	fi
233

234 235
	# check if our root is on raid so we can feed mkinitfs and
	# update-exlinux.conf with the proper kernel module params
236
	for dev in $rootdev $pvs; do
237 238 239 240 241 242 243 244

		# check if we need hardware raid drivers
		case $dev in
		/dev/cciss/*)
			initfs_features="${initfs_features% raid} raid"
			;;
		esac

245 246 247
		[ -e "/sys/block/${dev#/dev/}/md" ] || continue

		local md=${dev#/dev/}
248
		initfs_features="${initfs_features% raid} raid"
249 250
		local level=$(cat /sys/block/$md/md/level)
		case "$level" in
251 252
			raid1) raidmod="${raidmod%,raid1},raid1";;
			raid[456]) raidmod="${raidmod%,raid456},raid456";;
253 254
		esac
	done
255 256


257 258 259 260 261 262
	if [ -n "$VERBOSE" ]; then
		echo "Root device:     $rootdev"
		echo "Root filesystem: $root_fs"
		echo "Boot device:     $bootdev"
		echo "Boot filesystem: $boot_fs"
	fi
263

264
	if [ -z "$APKOVL" ]; then
265 266
		ovlfiles=/tmp/ovlfiles
		lbu package - | tar -C "$mnt" -zxv > "$ovlfiles"
267 268 269 270
		# comment out local repositories
		if [ -f "$mnt"/etc/apk/repositories ]; then
			sed -i -e 's:^/:#/:' "$mnt"/etc/apk/repositories
		fi
271 272
	else
		echo "Restoring backup from $APKOVL to $rootdev..."
273
		unpack_apkovl "$APKOVL" "$mnt" || return 1
274
	fi
275

276
	# generate mkinitfs.conf
277
	mkdir -p "$mnt"/etc/mkinitfs/features.d
278
	echo "features=\"$initfs_features\"" > "$mnt"/etc/mkinitfs/mkinitfs.conf
279
	if [ -n "$raidmod" ]; then
280 281
		echo "/sbin/mdadm" > "$mnt"/etc/mkinitfs/features.d/raid.files
		echo "/etc/mdadm.conf" >> "$mnt"/etc/mkinitfs/features.d/raid.files
282
	fi
283

284 285 286 287 288
	# generate update-extlinux.conf
	root=$(uuid_or_device $rootdev)
	if is_vmware; then
		kernel_opts="pax_nouderef $kernel_opts"
	fi
289 290 291
	if has_bootopt nomodeset; then
		kernel_opts="nomodeset $kernel_opts"
	fi
292 293 294 295 296
	modules="sd-mod,usb-storage,${root_fs}${raidmod}"
	sed -e "s:^root=.*:root=$root:" \
		-e "s:^default_kernel_opts=.*:default_kernel_opts=\"$kernel_opts\":" \
		-e "s:^modules=.*:modules=$modules:" \
		/etc/update-extlinux.conf > "$mnt"/etc/update-extlinux.conf
297 298 299 300
	if [ "$(rc --sys)" = "XEN0" ]; then
		sed -i -e "s:^default=.*:default=xen-grsec:" \
			"$mnt"/etc/update-extlinux.conf
	fi
301

302 303 304 305 306
	# generate the fstab
	if [ -f "$mnt"/etc/fstab ]; then
		mv "$mnt"/etc/fstab "$mnt"/etc/fstab.old
	fi
	enumerate_fstab "$mnt" >> "$mnt"/etc/fstab
307 308 309 310
	if [ -n "$SWAP_DEVICE" ]; then
		echo -e "${SWAP_DEVICE}\tswap\tswap\tdefaults\t0 0" \
			>> "$mnt"/etc/fstab
	fi
311 312 313 314 315
	cat >>"$mnt"/etc/fstab <<EOF
/dev/cdrom	/media/cdrom	iso9660	noauto,ro 0 0
/dev/fd0	/media/floppy	vfat	noauto	0 0
/dev/usbdisk	/media/usb	vfat	noauto	0 0
EOF
316
	# remove the installed db in case its there so we force re-install
317
	rm -f "$mnt"/var/lib/apk/installed "$mnt"/lib/apk/db/installed
318
	echo "Installing system on $rootdev:"
319 320
	extlinux $extlinux_raidopt --install "$mnt"/boot

321 322 323 324
	# apk reads config from target root so we need to copy the config
	mkdir -p "$mnt"/etc/apk/keys/
	cp /etc/apk/keys/* "$mnt"/etc/apk/keys/

325
	local apkflags="--initdb --quiet --progress --update-cache --clean-protected"
326
	local pkgs=$(cat "$mnt"/etc/apk/world "$mnt"/var/lib/apk/world 2>/dev/null)
327
	pkgs="$pkgs acct linux-$KERNEL_FLAVOR alpine-base"
328 329 330
	if [ "$(rc --sys)" = "XEN0" ]; then
		pkgs="$pkgs xen-hypervisor"
	fi
331 332 333 334 335
	local repos=$(sed -e 's/\#.*//' /etc/apk/repositories)
	local repoflags=
	for i in $repos; do
		repoflags="$repoflags --repository $i"
	done
336

337 338
	chroot_caps=$(set_grsec chroot_caps 0)
	init_chroot_mounts "$mnt"
339
	apk add --root "$mnt" $apkflags --overlay-from-stdin \
Natanael Copa's avatar
Natanael Copa committed
340
		$repoflags $pkgs <$ovlfiles
341 342 343 344
	local ret=$?
	cleanup_chroot_mounts "$mnt"
	set_grsec chroot_caps $chroot_caps > /dev/null
	return $ret
345 346 347 348
}

unmount_partitions() {
	local mnt="$1"
349 350

	# unmount the partitions
351
	umount $(awk '{print $2}' /proc/mounts | egrep "^$mnt(/|\$)" | sort -r)
352
}
353

354 355 356
# figure out decent default swap size in mega bytes
find_swap_size() {
	local memtotal_kb=$(awk '$1 == "MemTotal:" {print $2}' /proc/meminfo)
357 358 359 360
	# use 2 * avaiable ram or no more than 1/3 of smallest disk space
	local size=$(( $memtotal_kb * 2 / 1024 ))
	local disk= disksize=
	for disk in $@; do
361 362
		local sysfsdev=$(echo ${disk#/dev/} | sed 's:/:!:g')
		local sysfspath=/sys/block/$sysfsdev/size
363 364 365 366 367 368 369 370 371 372 373 374 375 376 377
		# disksize = x * 512 / (1024 * 1024) = x / 2048
		# maxsize = $disksize / 4 = x / (2048 * 4) = x / 8192
		maxsize=$(awk '{ printf "%i", $0 / 8192 }' $sysfspath )
		if [ $size -gt $maxsize ]; then
			size=$maxsize
		fi
	done
	if [ $size -gt 4096 ]; then
		# dont ever use more than 4G
		size=4096
	elif [ $size -lt 64 ]; then
		# dont bother create swap smaller than 64MB
		size=0
	fi
	echo $size
378 379 380 381
}

has_mounted_part() {
	local p
382
	local sysfsdev=$(echo ${1#/dev/} | sed 's:/:!:g')
Natanael Copa's avatar
Natanael Copa committed
383
	# parse /proc/mounts for mounted devices
384
	for p in $(awk '$1 ~ /^\/dev\// {gsub("/dev/", "", $1); gsub("/", "!", $1); print $1}' \
385
			/proc/mounts); do
386 387
		[ "$p" = "$sysfsdev" ] && return 0
		[ -e /sys/block/$sysfsdev/$p ] && return 0
388 389 390 391
	done
	return 1
}

Natanael Copa's avatar
Natanael Copa committed
392 393 394 395 396 397 398 399 400 401 402 403 404 405 406
has_holders() {
	local i
	# check if device is used by any md devices
	for i in $1/holders/* $1/*/holders/*; do
		[ -e "$i" ] && return 0
	done
	return 1
}

is_available_disk() {
	local dev=$1
	local b=$(echo $p | sed 's:/:!:g')

	# check if its a "root" block device and not a partition
	[ -e /sys/block/$b ] || return 1
407

Natanael Copa's avatar
Natanael Copa committed
408 409 410 411
	# check so it does not have mounted partitions
	has_mounted_part $dev && return 1

	# check so its not part of an md setup
412 413 414 415
	if has_holders /sys/block/$b; then
		[ -n "$USE_RAID" ] && echo "Warning: $dev is part of a running raid" >&2
		return 1
	fi
Natanael Copa's avatar
Natanael Copa committed
416 417 418 419 420 421 422

	# check so its not an md device
	[ -e /sys/block/$b/md ] && return 1

	return 0
}

423
find_disks() {
Natanael Copa's avatar
Natanael Copa committed
424
	local p=
425
	for p in $(awk '$1 ~ /[0-9]+/ {print $4}' /proc/partitions); do
Natanael Copa's avatar
Natanael Copa committed
426
		is_available_disk $p && echo -n " $p"
427 428 429
	done
}

430 431 432 433 434 435 436 437 438
stop_all_raid() {
	local rd
	for rd in /dev/md*; do
		[ -b $rd ] && mdadm --stop $rd
	done
}

# install needed programs
init_progs() {
439
	local raidpkg= lvmpkg= fs= fstools=
440
	[ -n "$USE_RAID" ] && raidpkg="mdadm"
441
	[ -n "$USE_LVM" ] && lvmpkg="lvm2"
442 443 444
	for fs in $BOOTFS $ROOTFS $VARFS; do
		# we need load btrfs module early to avoid the error message:
		# 'failed to open /dev/btrfs-control'
445 446 447 448 449 450
		modprobe $fs

		case $fs in
		xfs) fstools="$fstools xfsprogs";;
		ext*) fstools="$fstools e2fsprogs";;
		btrfs) fstools="$fstools btrfs-progs";;
451 452
		esac
	done
453
	apk add --quiet sfdisk $lvmpkg $raidpkg syslinux $fstools $@
454 455
}

456
show_disk_info() {
Natanael Copa's avatar
Natanael Copa committed
457
	local disk= vendor= model= d= size=
458
	for disk in $@; do
459 460
		local dev=${disk#/dev/}
		d=$(echo $dev | sed 's:/:!:g')
461 462 463
		vendor=$(cat /sys/block/$d/device/vendor 2>/dev/null)
		model=$(cat /sys/block/$d/device/model 2>/dev/null)
		size=$(awk '{gb = ($1 * 512)/1000000000; printf "%.1f GB\n", gb}' /sys/block/$d/size 2>/dev/null)
464
		echo "  $dev	($size $vendor $model)"
465 466
	done
}
467

468 469
confirm_erase() {
	local answer=
470 471
	local erasedisks="$@"
	if [ "$ERASE_DISKS" = "$erasedisks" ]; then
Natanael Copa's avatar
Natanael Copa committed
472
		return 0
473
	fi
474
	echo "WARNING: The following disk(s) will be erased:"
475
	show_disk_info $@
476
	echo -n "WARNING: Erase the above disk(s) and continue? [y/N]: "
477

478 479
	read answer
	case "$answer" in
480
		y*|Y*) return 0;;
481
	esac
482
	return 1
483 484
}

485
# setup partitions on given disk dev in $1.
486
# usage: setup_partitions <diskdev> size1,type1 [size2,type2 ...]
487 488 489 490 491
setup_partitions() {
	local diskdev="$1"
	shift

	echo "Initializing partitions on $diskdev..."
492 493 494 495 496 497 498

	# new disks does not have an DOS signature in sector 0
	# this makes sfdisk complain. We can workaround this by letting
	# fdisk create that DOS signature, by just do a "w", a write.
	# http://bugs.alpinelinux.org/issues/show/145
	echo "w" | fdisk $diskdev >/dev/null

499 500 501
	# fix the MBR while here so extlinux can boot
	cat "$MBR" > $diskdev

502
	local start=1M
503
	local line=
504 505
	# create new partitions
	(
506 507 508 509
		for line in "$@"; do
			echo "$start,$line"
			start=
		done
510
	) | sfdisk --quiet $diskdev >/dev/null || return 1
511 512 513 514 515 516 517 518 519 520 521

	# create device nodes if not exist
	mdev -s
}

# find the bootable partition on given disk
find_boot_partition() {
	sfdisk -d $1 | awk '/bootable/ {print $1}'
}

# find the partition(s) for LVM
522
# this is not marked as bootable and is type 8e
523 524
find_lvm_partition() {
	local type=8e
525
	sfdisk -d $1 | grep -v bootable | awk "/(Id|type)=$type/ {print \$1}"
526 527
}

528
# set up optional raid and create filesystem on boot device.
529
setup_boot_dev() {
530
	local disk= bootdev= mkfs_args="-q"
531 532 533
	local part=$(for disk in $@; do find_boot_partition $disk; done)
	set -- $part
	bootdev=$1
534
	[ -z "$bootdev" ] && return 1
535
	echo "Creating file systems..."
536
	if [ -n "$USE_RAID" ]; then
537 538 539 540 541 542
		local missing=
		local num=$#
		if [ $# -eq 1 ]; then
			missing="missing"
			num=2
		fi
543
		# we only use raid level 1 for boot devices
544 545
		mdadm --create /dev/md0 --level=1 --raid-devices=$num \
			--metadata=0.90 --quiet --run $@ $missing || return 1
546 547
		bootdev=/dev/md0
	fi
Natanael Copa's avatar
Natanael Copa committed
548
	[ "$BOOTFS" = "btrfs" ] && mkfs_args=""
549
	mkfs.$BOOTFS $mkfs_args $bootdev
550 551 552 553
	BOOT_DEV="$bootdev"
}

# $1 = index
554 555 556
# $2 = partition type
# $3... = disk devices
find_nth_non_boot_parts() {
557
	local idx=$1
558
	local id=$2
559 560
	local disk=
	shift
561
	shift
562 563
	for disk in $@; do
		sfdisk -d $disk | grep -v bootable \
564
			| awk "/(Id|type)=$id/ { i++; if (i==$idx) print \$1 }"
565 566 567 568 569 570 571 572 573
	done
}

setup_non_boot_raid_dev() {
	local md_dev=$1
	local idx=${md_dev#/dev/md}
	shift
	local level=1
	local missing=
574
	local raid_parts=$(find_nth_non_boot_parts $idx "fd" $@)
575 576 577 578 579 580 581 582 583 584
	set -- $raid_parts
	# how many disks do we have?
	case $# in
		0) echo "No Raid partitions found" >&2; return 1;;
		1) level=1; missing="missing"; num=2;;
		2) level=1; missing=  ; num=2;;
		*) level=5; missing=  ; num=$#;;
	esac
	mdadm --create /dev/md$idx --level=$level --raid-devices=$num \
		--quiet --run $@ $missing || return 1
585 586 587 588
}

# setup device for lvm, create raid array if needed
setup_lvm_volume_group() {
589 590 591
	local vgname="$1"
	shift
	local lvmdev=
592 593

	if [ -n "$USE_RAID" ]; then
594 595
		setup_non_boot_raid_dev /dev/md1 $@ || return 1
		lvmdev=/dev/md1
596
	else
597
		lvmdev=$(find_lvm_partition $1)
598 599 600 601 602
	fi

	# be quiet on success
	local errmsg=$(dd if=/dev/zero of=$lvmdev bs=1k count=1 2>&1) \
		|| echo "$errmsg"
603 604 605 606 607 608 609 610 611 612 613 614
	pvcreate --quiet $lvmdev \
		&& vgcreate --quiet $vgname $lvmdev >/dev/null
}

# set up swap on given device(s)
setup_swap_dev() {
	local swap_dev=
	sed -i -e '/swap/d' /etc/fstab
	for swap_dev in "$@"; do
		mkswap $swap_dev >/dev/null
		echo -e "$swap_dev\tswap\t\tswap\tdefaults 0 0" >> /etc/fstab
	done
615
	SWAP_DEVICE="$(uuid_or_device $swap_dev)"
616 617
	swapon -a
	rc-update --quiet add swap boot
618 619 620
}

# setup and enable swap on given volumegroup if needed
621
setup_lvm_swap() {
622
	local vgname="$1"
623
	local swapname=lv_swap
624 625 626
	if [ -z "$SWAP_SIZE" ] || [ "$SWAP_SIZE" -eq 0 ]; then
		return
	fi
627 628
	lvcreate --quiet -n $swapname -L ${SWAP_SIZE}MB $vgname
	setup_swap_dev /dev/$vgname/$swapname
629 630 631 632 633 634 635 636 637 638
}

# if /var is mounted, move out data and umount it
reset_var() {
	[ -z "$(find_mount_dev /var)" ] && return 0
	mkdir /.var
	mv /var/* /.var/ 2>/dev/null
	umount /var && 	rm -rf /var && mv /.var /var && rm -rf /var/lost+found
}

639 640 641
# set up /var on given device
setup_var() {
	local var_dev="$1"
642
	local varfs=${VARFS}
643
	echo "Creating file systems..."
644
	mkfs.$varfs $var_dev >/dev/null || return 1
645 646 647 648 649 650 651 652 653 654
	sed -i -e '/[[:space:]]\/var[[:space:]]/d' /etc/fstab
	echo -e "${var_dev}\t/var\t\t${varfs}\tdefaults 1 2" >> /etc/fstab

	mv /var /.var
	mkdir /var
	mount /var
	mv /.var/* /var/
	rmdir /.var

	/etc/init.d/syslog --quiet restart
655
	setup_mdadm_conf
656 657
}

658
setup_mdadm_conf() {
659
	local mods= mod=
660 661 662
	if [ -n "$USE_RAID" ]; then
		mdadm --detail --scan > /etc/mdadm.conf
		rc-update --quiet add mdadm-raid boot
663 664 665 666 667 668
		mods=$(awk '/^raid/ {print $1}' /proc/modules)
		for mod in $mods; do
			if ! grep -q "^$mod" /etc/modules; then
				echo $mod >> /etc/modules
			fi
		done
669 670 671
	fi
}

672
data_only_disk_install_lvm() {
673
	local diskdev=
674 675
	local vgname=vg0
	local var_dev=/dev/$vgname/lv_var
676 677 678
	local lvm_part_type="8e"
	local part_type=$lvm_part_type
	local size=
679 680

	init_progs || return 1
681
	confirm_erase $@ || return 1
682

683
	if [ "$USE_RAID" ]; then
684 685
		# the paritition type for raid is "fd"
		part_type="fd"
686 687
		stop_all_raid
	fi
688

689
	for diskdev in "$@"; do
690
		setup_partitions $diskdev "${size}${size:+M},$part_type" || return 1
691
	done
692

693 694
	setup_lvm_volume_group $vgname $@ || return 1
	setup_lvm_swap $vgname
695
	lvcreate --quiet -n ${var_dev##*/} -l 100%FREE $vgname
696
	setup_mdadm_conf
Natanael Copa's avatar
Natanael Copa committed
697
	rc-update add lvm boot
698
	setup_var $var_dev
699 700
}

701 702
data_only_disk_install() {
	local diskdev=
703 704
	local var_dev=
	local var_part_type="83"
705 706 707 708 709 710 711 712 713 714 715 716 717 718 719
	local swap_part_type=82
	local size=
	local swap_dev= var_dev=

	init_progs || return 1
	confirm_erase $@ || return 1

	if [ "$USE_RAID" ]; then
		var_part_type="fd"
		swap_part_type="fd"
		stop_all_raid
	fi

	for diskdev in "$@"; do
		setup_partitions $diskdev \
720 721
			"${SWAP_SIZE}M,$swap_part_type" \
			"${size}${size:+M},$var_part_type" || return 1
722 723 724 725 726 727 728 729 730 731 732 733 734 735 736
	done

	if [ "$USE_RAID" ]; then
		[ $SWAP_SIZE -gt 0 ] && setup_non_boot_raid_dev /dev/md1 $@
		setup_non_boot_raid_dev /dev/md2 $@ || return 1
		swap_dev=/dev/md1
		var_dev=/dev/md2
	else
		swap_dev=$(find_nth_non_boot_parts 1 82 $@)
		var_dev=$(find_nth_non_boot_parts 1 83 $@)
	fi
	[ $SWAP_SIZE -gt 0 ] && setup_swap_dev $swap_dev
	setup_var $var_dev
}

737
# setup
738
setup_root() {
739
	local root_dev="$1" boot_dev="$2" mkfs_args="-q"
Natanael Copa's avatar
Natanael Copa committed
740
	[ "$ROOTFS" = "btrfs" ] && mkfs_args=""
741
	mkfs.$ROOTFS $mkfs_args "$root_dev"
742 743
	mkdir -p "$SYSROOT"
	mount -t $ROOTFS $root_dev "$SYSROOT" || return 1
744
	if [ -n "$boot_dev" ]; then
745 746
		mkdir -p "$SYSROOT"/boot
		mount -t $BOOTFS $boot_dev "$SYSROOT"/boot || return 1
747 748 749
	fi

	setup_mdadm_conf
750 751
	install_mounted_root "$SYSROOT" || return 1
	unmount_partitions "$SYSROOT"
752 753 754
	swapoff -a

	echo ""
755
	echo "Installation is complete. Please reboot."
756 757
}

758
native_disk_install_lvm() {
759 760 761 762 763 764 765
	local diskdev= vgname=vg0
	local lvm_part_type="8e"
	local boot_part_type="83"
	local boot_size=${BOOT_SIZE:-100}
	local lvm_size=
	local root_dev=/dev/$vgname/lv_root

766
	init_progs || return 1
767
	confirm_erase $@ || return 1
768 769

	if [ -n "$USE_RAID" ]; then
770 771 772
		boot_part_type="fd"
		lvm_part_type="fd"
		stop_all_raid
773
	fi
774 775
	for diskdev in "$@"; do
		setup_partitions $diskdev \
776 777
			"${boot_size}M,$boot_part_type,*" \
			"${lvm_size}${lvm_size:+M},$lvm_part_type" || return 1
778 779 780 781 782 783 784 785
	done

	# will find BOOT_DEV for us
	setup_boot_dev $@

	setup_lvm_volume_group $vgname $@ || return 1
	setup_lvm_swap $vgname
	lvcreate --quiet -n ${root_dev##*/} -l 100%FREE $vgname
Natanael Copa's avatar
Natanael Copa committed
786
	rc-update add lvm boot
787
	setup_root $root_dev $BOOT_DEV
Natanael Copa's avatar
Natanael Copa committed
788 789
}

790 791 792 793 794 795 796
native_disk_install() {
	local root_part_type="83" swap_part_type="82" boot_part_type="83"
	local boot_size=${BOOT_SIZE:-100}
	local swap_size=${SWAP_SIZE}
	local root_size=
	local root_dev= boot_dev= swap_dev=

797
	init_progs || return 1
798 799 800 801 802 803 804 805 806 807
	confirm_erase $@ || return 1

	if [ -n "$USE_RAID" ]; then
		boot_part_type="fd"
		root_part_type="fd"
		swap_part_type="fd"
		stop_all_raid
	fi
	for diskdev in "$@"; do
		setup_partitions $diskdev \
808 809 810
			"${boot_size}M,$boot_part_type,*" \
			"${swap_size}M,$swap_part_type" \
			"${root_size}${root_size:+M},$root_part_type" \
811 812 813 814 815
			|| return 1
	done

	# will find BOOT_DEV for us
	setup_boot_dev $@
816

817 818 819 820 821 822 823 824 825 826 827 828 829
	if [ "$USE_RAID" ]; then
		[ $SWAP_SIZE -gt 0 ] && setup_non_boot_raid_dev /dev/md1 $@
		setup_non_boot_raid_dev /dev/md2 $@ || return 1
		swap_dev=/dev/md1
		root_dev=/dev/md2
	else
		swap_dev=$(find_nth_non_boot_parts 1 82 $@)
		root_dev=$(find_nth_non_boot_parts 1 83 $@)
	fi
	[ $SWAP_SIZE -gt 0 ] && setup_swap_dev $swap_dev
	setup_root $root_dev $BOOT_DEV
}

830
diskselect_help() {
831 832
	cat <<__EOF__

833
The disk you select can be used for a traditional disk install or for a
834 835 836 837
data-only install.

The disk will be erased.

838
Enter 'none' if you want to run diskless.
839 840 841 842

__EOF__
}

843
diskmode_help() {
844 845
	cat <<__EOF__

846
You can select between 'sys', 'data', 'lvm', 'lvmsys' or 'lvmdata'.
847

848 849 850
sys:
  This mode is a traditional disk install. The following partitions will be
  created on the disk: /boot, / (filesystem root) and swap.
851

852
  This mode may be used for development boxes, desktops, virtual servers, etc.
853

854 855 856
data:
  This mode uses your disk(s) for data storage, not for the operating system.
  The system itself will run from tmpfs (RAM).
857

858 859
  Use this mode if you only want to use the disk(s) for a mailspool, databases,
  logs, etc.
860

861 862 863 864 865 866 867 868 869
lvm:
  Enable logical volume manager and ask again for 'sys' or 'data'.

lvmsys:
  Same as 'sys' but use logical volume manager for partitioning.

lvmdata:
  Same as 'data' but use logical volume manager for partitioning.

870 871 872 873 874 875 876 877
__EOF__
}

# ask for a root or data disk
# returns answer in global variable $answer
ask_disk() {
	local prompt="$1"
	local help_func="$2"
878
	local i=
879 880
	shift 2
	answer=
881
	local default_disk=${DEFAULT_DISK:-$1}
882

883 884 885
	while ! all_in_list "$answer" $@ "none" "abort"; do
		echo "Available disks are:"
		show_disk_info "$@"
886 887
		echon "$prompt [$default_disk] "
		default_read answer $default_disk
888 889 890 891
		case "$answer" in
			'abort') exit 0;;
			'none') return 0;;
			'?') $help_func;;
892 893 894 895 896 897
			*) for i in $answer; do
				if ! [ -b "/dev/$i" ]; then
					echo "/dev/$i is not a block device" >&2
					answer=
				   fi
			done;;
898 899 900 901
		esac
	done
}

902 903
usage() {
	cat <<__EOF__
904
usage: setup-disk [-hLqrv] [-k kernelflavor] [-m MODE] [-o apkovl] [-s SWAPSIZE]
905 906 907 908 909 910 911 912 913 914 915 916 917
		  [MOUNTPOINT | DISKDEV...]

Install alpine on harddisk.

If MOUNTPOINT is specified, then do a traditional disk install with MOUNTPOINT
as root.

If DISKDEV is specified, then use the specified disk(s) without asking. If
multiple disks are specified then set them up in a RAID array. If there are
mode than 2 disks, then use raid level 5 instead of raid level 1.

options:
 -h  Show this help
918
 -m  Use disk for MODE without asking, where MODE is either 'data' or 'sys'
919 920
 -o  Restore system from given apkovl file
 -k  Use kernelflavor instead of $KERNEL_FLAVOR
921
 -L  Use LVM to manage partitions
922 923
 -q  Exit quietly if no disks are found
 -r  Enable software raid1 with single disk
924
 -s  Use SWAPSIZE MB instead of autodetecting swap size (Use 0 to disable swap)
925
 -v  Be more verbose about what is happening
926

927 928 929 930 931 932
If BOOTFS, ROOTFS, VARFS are specified, then format a partition with specified
filesystem. If not specified, the default filesystem is ext4.
Supported filesystems for
  boot: ext2, ext3, ext4, btrfs
  root: ext2, ext3, ext4, btrfs, xfs
   var: ext2, ext3, ext4, btrfs, xfs
933 934 935 936
__EOF__
	exit 1
}

Francesco Colista's avatar
Francesco Colista committed
937 938 939 940 941
kver=$(uname -r)
case $kver in
        *-rc[0-9]*) KERNEL_FLAVOR=vanilla;;
        *-[a-z]*) KERNEL_FLAVOR=${kver##*-};;
        *) KERNEL_FLAVOR=vanilla;;
942 943
esac

944
DISK_MODE=
945
USE_LVM=
946
# Parse args
947
while getopts "hk:Lm:o:qrs:v" opt; do
948
	case $opt in
949
		m) DISK_MODE="$OPTARG";;
950
		k) KERNEL_FLAVOR="$OPTARG";;
951
		L) USE_LVM="_lvm";;
952
		o) APKOVL="$OPTARG";;
953 954
		q) QUIET=1;;
		r) USE_RAID=1;;
955
		s) SWAP_SIZE="$OPTARG";;
956
		v) VERBOSE=1;;
Natanael Copa's avatar
Natanael Copa committed
957
		*) usage;;
958 959
	esac
done
960
shift $(( $OPTIND - 1))
961

962 963
if [ -d "$1" ]; then
	# install to given mounted root
964
	apk add --quiet syslinux
965 966
	install_mounted_root "${1%/}" \
		&& echo "You might need fix the MBR to be able to boot" >&2
967 968 969
	exit $?
fi

970 971 972 973 974 975 976 977 978 979
reset_var
swapoff -a

# stop all volume groups in use
vgchange --ignorelockingfailure -a n >/dev/null 2>&1

if [ -n "$USE_RAID" ]; then
	stop_all_raid
fi

980
disks=$(find_disks)
981
diskdevs=
Natanael Copa's avatar
Natanael Copa committed
982 983

# no disks so lets exit quietly.
984 985 986 987
if [ -z "$disks" ]; then
	[ -z "$QUIET" ] && echo "No disks found." >&2
	exit 0
fi
Natanael Copa's avatar
Natanael Copa committed
988

989
if [ $# -gt 0 ]; then
990
	# check that they are
991 992 993
	for i in "$@"; do
		j=$(readlink -f "$i" | sed 's:^/dev/::; s:/:!:g')
		if ! [ -e "/sys/block/$j/device" ]; then
994
			echo "$i is not a suitable for partitioning"
995 996
			exit 1
		fi
997
		diskdevs="$diskdevs /dev/${j//!//}"
998 999
	done
else
1000
	ask_disk "Which disk(s) would you like to use? (or '?' for help or 'none')" \
1001
		diskselect_help $disks
1002
	if [ "$answer" != none ]; then
1003 1004 1005
		for i in $answer; do
			diskdevs="$diskdevs /dev/$i"
		done
1006 1007
	else
		DISK_MODE="none"
1008
	fi
1009
fi
Natanael Copa's avatar
Natanael Copa committed
1010

1011
if [ -n "$diskdevs" ] && [ -z "$DISK_MODE" ]; then
1012
	answer=
1013
	disk_is_or_disks_are="disk is"
1014
	it_them="it"
1015
	set -- $diskdevs
1016
	if [ $# -gt 1 ]; then
1017
		disk_is_or_disks_are="disks are"
1018 1019
		it_them="them"
	fi
1020

1021
	while true; do
1022
		echo "The following $disk_is_or_disks_are selected${USE_LVM:+ (with LVM)}:"
1023
		show_disk_info $diskdevs
1024 1025
		local _lvm=${USE_LVM:-", 'lvm'"}
		echon "How would you like to use $it_them? ('sys', 'data'${_lvm#_lvm} or '?' for help) [?] "
1026 1027 1028
		default_read answer '?'
		case "$answer" in
		'?') diskmode_help;;
1029
		sys|data) break;;
1030 1031 1032 1033 1034 1035 1036
		lvm) USE_LVM="_lvm" ;;
		nolvm) USE_LVM="";;
		lvmsys|lvmdata)
			answer=${answer#lvm}
			USE_LVM="_lvm"
			break
			;;
1037 1038
		esac
	done
1039
	DISK_MODE="$answer"
1040
fi
Natanael Copa's avatar
Natanael Copa committed
1041

1042 1043 1044 1045
if [ -z "$SWAP_SIZE" ]; then
	SWAP_SIZE=$(find_swap_size $diskdevs)
fi

1046 1047 1048 1049
set -- $diskdevs
if [ $# -gt 1 ]; then
	USE_RAID=1
fi
1050

1051 1052
dmesg -n1

1053
# native disk install
1054
case "$DISK_MODE" in
1055
sys) native_disk_install$USE_LVM $diskdevs;;
1056
data) data_only_disk_install$USE_LVM $diskdevs;;
1057
none) exit 0;;
1058
*) echo "Not a valid install mode: $DISK_MODE" >&2; exit 1;;
1059
esac
Natanael Copa's avatar
Natanael Copa committed
1060

1061
echo "$DISK_MODE" > /tmp/alpine-install-diskmode.out