setup-disk.in 25 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

276 277 278
	# we should not try start modloop on sys install
	rm -f "$mnt"/etc/runlevels/*/modloop

279
	# generate mkinitfs.conf
280
	mkdir -p "$mnt"/etc/mkinitfs/features.d
281
	echo "features=\"$initfs_features\"" > "$mnt"/etc/mkinitfs/mkinitfs.conf
282
	if [ -n "$raidmod" ]; then
283 284
		echo "/sbin/mdadm" > "$mnt"/etc/mkinitfs/features.d/raid.files
		echo "/etc/mdadm.conf" >> "$mnt"/etc/mkinitfs/features.d/raid.files
285
	fi
286

287 288 289 290 291
	# generate update-extlinux.conf
	root=$(uuid_or_device $rootdev)
	if is_vmware; then
		kernel_opts="pax_nouderef $kernel_opts"
	fi
292 293 294
	if has_bootopt nomodeset; then
		kernel_opts="nomodeset $kernel_opts"
	fi
295 296 297 298 299
	modules="sd-mod,usb-storage,${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 > "$mnt"/etc/update-extlinux.conf
300 301 302 303
	if [ "$(rc --sys)" = "XEN0" ]; then
		sed -i -e "s:^default=.*:default=xen-grsec:" \
			"$mnt"/etc/update-extlinux.conf
	fi
304

305 306 307 308 309
	# generate the fstab
	if [ -f "$mnt"/etc/fstab ]; then
		mv "$mnt"/etc/fstab "$mnt"/etc/fstab.old
	fi
	enumerate_fstab "$mnt" >> "$mnt"/etc/fstab
310 311 312 313
	if [ -n "$SWAP_DEVICE" ]; then
		echo -e "${SWAP_DEVICE}\tswap\tswap\tdefaults\t0 0" \
			>> "$mnt"/etc/fstab
	fi
314 315 316 317 318
	cat >>"$mnt"/etc/fstab <<EOF
/dev/cdrom	/media/cdrom	iso9660	noauto,ro 0 0
/dev/fd0	/media/floppy	vfat	noauto	0 0
/dev/usbdisk	/media/usb	vfat	noauto	0 0
EOF
319
	# remove the installed db in case its there so we force re-install
320
	rm -f "$mnt"/var/lib/apk/installed "$mnt"/lib/apk/db/installed
321
	echo "Installing system on $rootdev:"
322 323
	extlinux $extlinux_raidopt --install "$mnt"/boot

324 325 326 327
	# 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/

328
	local apkflags="--initdb --quiet --progress --update-cache --clean-protected"
329 330 331
	local pkgs=$(grep -h -v -w sfdisk "$mnt"/etc/apk/world \
		"$mnt"/var/lib/apk/world 2>/dev/null)

332
	pkgs="$pkgs acct linux-$KERNEL_FLAVOR alpine-base"
333 334 335
	if [ "$(rc --sys)" = "XEN0" ]; then
		pkgs="$pkgs xen-hypervisor"
	fi
336 337 338 339 340
	local repos=$(sed -e 's/\#.*//' /etc/apk/repositories)
	local repoflags=
	for i in $repos; do
		repoflags="$repoflags --repository $i"
	done
341

342 343
	chroot_caps=$(set_grsec chroot_caps 0)
	init_chroot_mounts "$mnt"
344
	apk add --root "$mnt" $apkflags --overlay-from-stdin \
Natanael Copa's avatar
Natanael Copa committed
345
		$repoflags $pkgs <$ovlfiles
346 347 348 349
	local ret=$?
	cleanup_chroot_mounts "$mnt"
	set_grsec chroot_caps $chroot_caps > /dev/null
	return $ret
350 351 352 353
}

unmount_partitions() {
	local mnt="$1"
354 355

	# unmount the partitions
356
	umount $(awk '{print $2}' /proc/mounts | egrep "^$mnt(/|\$)" | sort -r)
357
}
358

359 360 361
# figure out decent default swap size in mega bytes
find_swap_size() {
	local memtotal_kb=$(awk '$1 == "MemTotal:" {print $2}' /proc/meminfo)
362 363 364 365
	# use 2 * avaiable ram or no more than 1/3 of smallest disk space
	local size=$(( $memtotal_kb * 2 / 1024 ))
	local disk= disksize=
	for disk in $@; do
366 367
		local sysfsdev=$(echo ${disk#/dev/} | sed 's:/:!:g')
		local sysfspath=/sys/block/$sysfsdev/size
368 369 370 371 372 373 374 375 376 377 378 379 380 381 382
		# 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
383 384 385 386
}

has_mounted_part() {
	local p
387
	local sysfsdev=$(echo ${1#/dev/} | sed 's:/:!:g')
Natanael Copa's avatar
Natanael Copa committed
388
	# parse /proc/mounts for mounted devices
389
	for p in $(awk '$1 ~ /^\/dev\// {gsub("/dev/", "", $1); gsub("/", "!", $1); print $1}' \
390
			/proc/mounts); do
391 392
		[ "$p" = "$sysfsdev" ] && return 0
		[ -e /sys/block/$sysfsdev/$p ] && return 0
393 394 395 396
	done
	return 1
}

Natanael Copa's avatar
Natanael Copa committed
397 398 399 400 401 402 403 404 405 406 407 408 409 410 411
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
412

Natanael Copa's avatar
Natanael Copa committed
413 414 415 416
	# check so it does not have mounted partitions
	has_mounted_part $dev && return 1

	# check so its not part of an md setup
417 418 419 420
	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
421 422 423 424 425 426 427

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

	return 0
}

428
find_disks() {
Natanael Copa's avatar
Natanael Copa committed
429
	local p=
430 431
	# filter out ramdisks (major=1)
	for p in $(awk '$1 != 1 && $1 ~ /[0-9]+/ {print $4}' /proc/partitions); do
Natanael Copa's avatar
Natanael Copa committed
432
		is_available_disk $p && echo -n " $p"
433 434 435
	done
}

436 437 438 439 440 441 442 443 444
stop_all_raid() {
	local rd
	for rd in /dev/md*; do
		[ -b $rd ] && mdadm --stop $rd
	done
}

# install needed programs
init_progs() {
445
	local raidpkg= lvmpkg= fs= fstools=
446
	[ -n "$USE_RAID" ] && raidpkg="mdadm"
447
	[ -n "$USE_LVM" ] && lvmpkg="lvm2"
448 449 450
	for fs in $BOOTFS $ROOTFS $VARFS; do
		# we need load btrfs module early to avoid the error message:
		# 'failed to open /dev/btrfs-control'
451 452 453 454 455 456
		modprobe $fs

		case $fs in
		xfs) fstools="$fstools xfsprogs";;
		ext*) fstools="$fstools e2fsprogs";;
		btrfs) fstools="$fstools btrfs-progs";;
457 458
		esac
	done
459
	apk add --quiet sfdisk $lvmpkg $raidpkg syslinux $fstools $@
460 461
}

462
show_disk_info() {
Natanael Copa's avatar
Natanael Copa committed
463
	local disk= vendor= model= d= size=
464
	for disk in $@; do
465 466
		local dev=${disk#/dev/}
		d=$(echo $dev | sed 's:/:!:g')
467 468 469
		vendor=$(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)
470
		echo "  $dev	($size $vendor $model)"
471 472
	done
}
473

474 475
confirm_erase() {
	local answer=
476 477
	local erasedisks="$@"
	if [ "$ERASE_DISKS" = "$erasedisks" ]; then
Natanael Copa's avatar
Natanael Copa committed
478
		return 0
479
	fi
480
	echo "WARNING: The following disk(s) will be erased:"
481
	show_disk_info $@
482
	echo -n "WARNING: Erase the above disk(s) and continue? [y/N]: "
483

484 485
	read answer
	case "$answer" in
486
		y*|Y*) return 0;;
487
	esac
488
	return 1
489 490
}

491
# setup partitions on given disk dev in $1.
492
# usage: setup_partitions <diskdev> size1,type1 [size2,type2 ...]
493 494 495 496 497
setup_partitions() {
	local diskdev="$1"
	shift

	echo "Initializing partitions on $diskdev..."
498 499 500 501 502 503 504

	# 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

505 506 507
	# fix the MBR while here so extlinux can boot
	cat "$MBR" > $diskdev

508
	local start=1M
509
	local line=
510 511
	# create new partitions
	(
512 513 514 515
		for line in "$@"; do
			echo "$start,$line"
			start=
		done
516
	) | sfdisk --quiet $diskdev >/dev/null || return 1
517 518 519 520 521 522 523 524 525 526 527

	# 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
528
# this is not marked as bootable and is type 8e
529 530
find_lvm_partition() {
	local type=8e
531
	sfdisk -d $1 | grep -v bootable | awk "/(Id|type)=$type/ {print \$1}"
532 533
}

534
# set up optional raid and create filesystem on boot device.
535
setup_boot_dev() {
536
	local disk= bootdev= mkfs_args="-q"
537 538 539
	local part=$(for disk in $@; do find_boot_partition $disk; done)
	set -- $part
	bootdev=$1
540
	[ -z "$bootdev" ] && return 1
541
	echo "Creating file systems..."
542
	if [ -n "$USE_RAID" ]; then
543 544 545 546 547 548
		local missing=
		local num=$#
		if [ $# -eq 1 ]; then
			missing="missing"
			num=2
		fi
549
		# we only use raid level 1 for boot devices
550 551
		mdadm --create /dev/md0 --level=1 --raid-devices=$num \
			--metadata=0.90 --quiet --run $@ $missing || return 1
552 553
		bootdev=/dev/md0
	fi
Natanael Copa's avatar
Natanael Copa committed
554
	[ "$BOOTFS" = "btrfs" ] && mkfs_args=""
555
	mkfs.$BOOTFS $mkfs_args $bootdev
556 557 558 559
	BOOT_DEV="$bootdev"
}

# $1 = index
560 561 562
# $2 = partition type
# $3... = disk devices
find_nth_non_boot_parts() {
563
	local idx=$1
564
	local id=$2
565 566
	local disk=
	shift
567
	shift
568 569
	for disk in $@; do
		sfdisk -d $disk | grep -v bootable \
570
			| awk "/(Id|type)=$id/ { i++; if (i==$idx) print \$1 }"
571 572 573 574 575 576 577 578 579
	done
}

setup_non_boot_raid_dev() {
	local md_dev=$1
	local idx=${md_dev#/dev/md}
	shift
	local level=1
	local missing=
580
	local raid_parts=$(find_nth_non_boot_parts $idx "fd" $@)
581 582 583 584 585 586 587 588 589 590
	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
591 592 593 594
}

# setup device for lvm, create raid array if needed
setup_lvm_volume_group() {
595 596 597
	local vgname="$1"
	shift
	local lvmdev=
598 599

	if [ -n "$USE_RAID" ]; then
600 601
		setup_non_boot_raid_dev /dev/md1 $@ || return 1
		lvmdev=/dev/md1
602
	else
603
		lvmdev=$(find_lvm_partition $1)
604 605 606 607 608
	fi

	# be quiet on success
	local errmsg=$(dd if=/dev/zero of=$lvmdev bs=1k count=1 2>&1) \
		|| echo "$errmsg"
609 610 611 612 613 614 615 616 617 618 619 620
	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
621
	SWAP_DEVICE="$(uuid_or_device $swap_dev)"
622 623
	swapon -a
	rc-update --quiet add swap boot
624 625 626
}

# setup and enable swap on given volumegroup if needed
627
setup_lvm_swap() {
628
	local vgname="$1"
629
	local swapname=lv_swap
630 631 632
	if [ -z "$SWAP_SIZE" ] || [ "$SWAP_SIZE" -eq 0 ]; then
		return
	fi
633 634
	lvcreate --quiet -n $swapname -L ${SWAP_SIZE}MB $vgname
	setup_swap_dev /dev/$vgname/$swapname
635 636 637 638 639 640 641 642 643 644
}

# 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
}

645 646 647
# set up /var on given device
setup_var() {
	local var_dev="$1"
648
	local varfs=${VARFS}
649
	echo "Creating file systems..."
650
	mkfs.$varfs $var_dev >/dev/null || return 1
651 652 653 654 655 656 657 658 659 660
	sed -i -e '/[[:space:]]\/var[[:space:]]/d' /etc/fstab
	echo -e "${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
661
	setup_mdadm_conf
662 663
}

664
setup_mdadm_conf() {
665
	local mods= mod=
666 667 668
	if [ -n "$USE_RAID" ]; then
		mdadm --detail --scan > /etc/mdadm.conf
		rc-update --quiet add mdadm-raid boot
669 670 671 672 673 674
		mods=$(awk '/^raid/ {print $1}' /proc/modules)
		for mod in $mods; do
			if ! grep -q "^$mod" /etc/modules; then
				echo $mod >> /etc/modules
			fi
		done
675 676 677
	fi
}

678
data_only_disk_install_lvm() {
679
	local diskdev=
680 681
	local vgname=vg0
	local var_dev=/dev/$vgname/lv_var
682 683 684
	local lvm_part_type="8e"
	local part_type=$lvm_part_type
	local size=
685 686

	init_progs || return 1
687
	confirm_erase $@ || return 1
688

689
	if [ "$USE_RAID" ]; then
690 691
		# the paritition type for raid is "fd"
		part_type="fd"
692 693
		stop_all_raid
	fi
694

695
	for diskdev in "$@"; do
696
		setup_partitions $diskdev "${size}${size:+M},$part_type" || return 1
697
	done
698

699 700
	setup_lvm_volume_group $vgname $@ || return 1
	setup_lvm_swap $vgname
701
	lvcreate --quiet -n ${var_dev##*/} -l 100%FREE $vgname
702
	setup_mdadm_conf
Natanael Copa's avatar
Natanael Copa committed
703
	rc-update add lvm boot
704
	setup_var $var_dev
705 706
}

707 708
data_only_disk_install() {
	local diskdev=
709 710
	local var_dev=
	local var_part_type="83"
711 712 713 714 715 716 717 718 719 720 721 722 723 724 725
	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 $diskdev \
726 727
			"${SWAP_SIZE}M,$swap_part_type" \
			"${size}${size:+M},$var_part_type" || return 1
728 729 730 731 732 733 734 735 736 737 738 739 740 741 742
	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
}

743
# setup
744
setup_root() {
745
	local root_dev="$1" boot_dev="$2" mkfs_args="-q"
Natanael Copa's avatar
Natanael Copa committed
746
	[ "$ROOTFS" = "btrfs" ] && mkfs_args=""
747
	mkfs.$ROOTFS $mkfs_args "$root_dev"
748 749
	mkdir -p "$SYSROOT"
	mount -t $ROOTFS $root_dev "$SYSROOT" || return 1
750
	if [ -n "$boot_dev" ]; then
751 752
		mkdir -p "$SYSROOT"/boot
		mount -t $BOOTFS $boot_dev "$SYSROOT"/boot || return 1
753 754 755
	fi

	setup_mdadm_conf
756 757
	install_mounted_root "$SYSROOT" || return 1
	unmount_partitions "$SYSROOT"
758 759 760
	swapoff -a

	echo ""
761
	echo "Installation is complete. Please reboot."
762 763
}

764
native_disk_install_lvm() {
765 766 767 768 769 770 771
	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

772
	init_progs || return 1
773
	confirm_erase $@ || return 1
774 775

	if [ -n "$USE_RAID" ]; then
776 777 778
		boot_part_type="fd"
		lvm_part_type="fd"
		stop_all_raid
779
	fi
780 781
	for diskdev in "$@"; do
		setup_partitions $diskdev \
782 783
			"${boot_size}M,$boot_part_type,*" \
			"${lvm_size}${lvm_size:+M},$lvm_part_type" || return 1
784 785 786 787 788 789 790 791
	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
792
	rc-update add lvm boot
793
	setup_root $root_dev $BOOT_DEV
Natanael Copa's avatar
Natanael Copa committed
794 795
}

796 797 798 799 800 801 802
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=

803
	init_progs || return 1
804 805 806 807 808 809 810 811 812 813
	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 $diskdev \
814 815 816
			"${boot_size}M,$boot_part_type,*" \
			"${swap_size}M,$swap_part_type" \
			"${root_size}${root_size:+M},$root_part_type" \
817 818 819 820 821
			|| return 1
	done

	# will find BOOT_DEV for us
	setup_boot_dev $@
822

823 824 825 826 827 828 829 830 831 832 833 834 835
	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
}

836
diskselect_help() {
837 838
	cat <<__EOF__

839
The disk you select can be used for a traditional disk install or for a
840 841 842 843
data-only install.

The disk will be erased.

844
Enter 'none' if you want to run diskless.
845 846 847 848

__EOF__
}

849
diskmode_help() {
850 851
	cat <<__EOF__

852
You can select between 'sys', 'data', 'lvm', 'lvmsys' or 'lvmdata'.
853

854 855 856
sys:
  This mode is a traditional disk install. The following partitions will be
  created on the disk: /boot, / (filesystem root) and swap.
857

858
  This mode may be used for development boxes, desktops, virtual servers, etc.
859

860 861 862
data:
  This mode uses your disk(s) for data storage, not for the operating system.
  The system itself will run from tmpfs (RAM).
863

864 865
  Use this mode if you only want to use the disk(s) for a mailspool, databases,
  logs, etc.
866

867 868 869 870 871 872 873 874 875
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.

876 877 878 879 880 881 882 883
__EOF__
}

# ask for a root or data disk
# returns answer in global variable $answer
ask_disk() {
	local prompt="$1"
	local help_func="$2"
884
	local i=
885 886
	shift 2
	answer=
887
	local default_disk=${DEFAULT_DISK:-$1}
888

889 890 891
	while ! all_in_list "$answer" $@ "none" "abort"; do
		echo "Available disks are:"
		show_disk_info "$@"
892 893
		echon "$prompt [$default_disk] "
		default_read answer $default_disk
894 895 896 897
		case "$answer" in
			'abort') exit 0;;
			'none') return 0;;
			'?') $help_func;;
898 899 900 901 902 903
			*) for i in $answer; do
				if ! [ -b "/dev/$i" ]; then
					echo "/dev/$i is not a block device" >&2
					answer=
				   fi
			done;;
904 905 906 907
		esac
	done
}

908 909
usage() {
	cat <<__EOF__
910
usage: setup-disk [-hLqrv] [-k kernelflavor] [-m MODE] [-o apkovl] [-s SWAPSIZE]
911 912 913 914 915 916 917 918 919 920 921 922 923
		  [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
924
 -m  Use disk for MODE without asking, where MODE is either 'data' or 'sys'
925 926
 -o  Restore system from given apkovl file
 -k  Use kernelflavor instead of $KERNEL_FLAVOR
927
 -L  Use LVM to manage partitions
928 929
 -q  Exit quietly if no disks are found
 -r  Enable software raid1 with single disk
930
 -s  Use SWAPSIZE MB instead of autodetecting swap size (Use 0 to disable swap)
931
 -v  Be more verbose about what is happening
932

933 934 935 936 937 938
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
939 940 941 942
__EOF__
	exit 1
}

Francesco Colista's avatar
Francesco Colista committed
943 944 945 946 947
kver=$(uname -r)
case $kver in
        *-rc[0-9]*) KERNEL_FLAVOR=vanilla;;
        *-[a-z]*) KERNEL_FLAVOR=${kver##*-};;
        *) KERNEL_FLAVOR=vanilla;;
948 949
esac

950
DISK_MODE=
951
USE_LVM=
952
# Parse args
953
while getopts "hk:Lm:o:qrs:v" opt; do
954
	case $opt in
955
		m) DISK_MODE="$OPTARG";;
956
		k) KERNEL_FLAVOR="$OPTARG";;
957
		L) USE_LVM="_lvm";;
958
		o) APKOVL="$OPTARG";;
959 960
		q) QUIET=1;;
		r) USE_RAID=1;;
961
		s) SWAP_SIZE="$OPTARG";;
962
		v) VERBOSE=1;;
Natanael Copa's avatar
Natanael Copa committed
963
		*) usage;;
964 965
	esac
done
966
shift $(( $OPTIND - 1))
967

968 969
if [ -d "$1" ]; then
	# install to given mounted root
970
	apk add --quiet syslinux
971 972
	install_mounted_root "${1%/}" \
		&& echo "You might need fix the MBR to be able to boot" >&2
973 974 975
	exit $?
fi

976 977 978 979 980 981 982 983 984 985
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

986
disks=$(find_disks)
987
diskdevs=
Natanael Copa's avatar
Natanael Copa committed
988 989

# no disks so lets exit quietly.
990 991 992 993
if [ -z "$disks" ]; then
	[ -z "$QUIET" ] && echo "No disks found." >&2
	exit 0
fi
Natanael Copa's avatar
Natanael Copa committed
994

995
if [ $# -gt 0 ]; then
996
	# check that they are
997 998 999
	for i in "$@"; do
		j=$(readlink -f "$i" | sed 's:^/dev/::; s:/:!:g')
		if ! [ -e "/sys/block/$j/device" ]; then
1000
			echo "$i is not a suitable for partitioning"
1001 1002
			exit 1
		fi
1003
		diskdevs="$diskdevs /dev/${j//!//}"
1004 1005
	done
else
1006
	ask_disk "Which disk(s) would you like to use? (or '?' for help or 'none')" \
1007
		diskselect_help $disks
1008
	if [ "$answer" != none ]; then
1009 1010 1011
		for i in $answer; do
			diskdevs="$diskdevs /dev/$i"
		done
1012 1013
	else
		DISK_MODE="none"
1014
	fi
1015
fi
Natanael Copa's avatar
Natanael Copa committed
1016

1017
if [ -n "$diskdevs" ] && [ -z "$DISK_MODE" ]; then
1018
	answer=
1019
	disk_is_or_disks_are="disk is"
1020
	it_them="it"
1021
	set -- $diskdevs
1022
	if [ $# -gt 1 ]; then
1023
		disk_is_or_disks_are="disks are"
1024 1025
		it_them="them"
	fi
1026

1027
	while true; do
1028
		echo "The following $disk_is_or_disks_are selected${USE_LVM:+ (with LVM)}:"
1029
		show_disk_info $diskdevs
1030 1031
		local _lvm=${USE_LVM:-", 'lvm'"}
		echon "How would you like to use $it_them? ('sys', 'data'${_lvm#_lvm} or '?' for help) [?] "
1032 1033 1034
		default_read answer '?'
		case "$answer" in
		'?') diskmode_help;;
1035
		sys|data) break;;
1036 1037 1038 1039 1040 1041 1042
		lvm) USE_LVM="_lvm" ;;
		nolvm) USE_LVM="";;
		lvmsys|lvmdata)
			answer=${answer#lvm}
			USE_LVM="_lvm"
			break
			;;
1043 1044
		esac
	done
1045
	DISK_MODE="$answer"
1046
fi
Natanael Copa's avatar
Natanael Copa committed
1047

1048 1049 1050 1051
if [ -z "$SWAP_SIZE" ]; then
	SWAP_SIZE=$(find_swap_size $diskdevs)
fi

1052 1053 1054 1055
set -- $diskdevs
if [ $# -gt 1 ]; then
	USE_RAID=1
fi
1056

1057 1058
dmesg -n1

1059
# native disk install
1060
case "$DISK_MODE" in
1061
sys) native_disk_install$USE_LVM $diskdevs;;
1062
data) data_only_disk_install$USE_LVM $diskdevs;;
1063
none) exit 0;;
1064
*) echo "Not a valid install mode: $DISK_MODE" >&2; exit 1;;
1065
esac
Natanael Copa's avatar
Natanael Copa committed
1066

1067
echo "$DISK_MODE" > /tmp/alpine-install-diskmode.out