#!/bin/bash

set -e

fs="$1"

GRUBFSTEST="@builddir@/grub-fstest"

tempdir=`mktemp -d "${TMPDIR:-/tmp}/tmp.XXXXXXXXXX"` || exit 1

# This wrapper is to ease insertion of valgrind or time statistics
run_it () {
    "$GRUBFSTEST" "$@"
}

run_grubfstest () {
    run_it -c $NEED_IMAGES_N "${NEED_IMAGES[@]}"  "$@"
}

# OS LIMITATION: GNU/Linux has no AFS support, so we use a premade image and a reference tar file. I.a. no multiblocksize test

MINLOGSECSIZE=9
MAXLOGSECSIZE=9
case x"$fs" in
    xntfs*)
	MINLOGSECSIZE=8
	MAXLOGSECSIZE=12;;
    xvfat*|xmsdos*)
	MINLOGSECSIZE=9
	    #  OS LIMITATION: It could go up to 32768 but Linux rejects sector sizes > 4096
	MAXLOGSECSIZE=12;;
    xext*)
	MINLOGSECSIZE=8
	MAXLOGSECSIZE=12;;
    xbtrfs*)
	MINLOGSECSIZE=8
	    #  OS LIMITATION: It could go up to 32768 but Linux rejects sector sizes > 4096
	MAXLOGSECSIZE=12;;
    xxfs)
	MINLOGSECSIZE=9
  	    # OS LIMITATION: GNU/Linux doesn't accept > 4096
	MAXLOGSECSIZE=12;;
    xzfs*)
	    # OS LIMITATION: zfs-fuse hangs when creating zpool with sectors <=256B.
	MINLOGSECSIZE=9
	    # OS LIMITATION: zfs-fuse fails with >= 32K sectors.
	# OS limitation: zfs-fuse always uses ashift=9 with loop devices
	MAXLOGSECSIZE=9;;
esac
for ((LOGSECSIZE=MINLOGSECSIZE;LOGSECSIZE<=MAXLOGSECSIZE;LOGSECSIZE=LOGSECSIZE + 1)); do
    SECSIZE="$((1 << LOGSECSIZE))"
    MINBLKSIZE=512
    MAXBLKSIZE=512
    BLKSTEP=0
    case x"$fs" in
	xntfs*)
	    MINBLKSIZE=$SECSIZE
	    MAXBLKSIZE=65536
	    if [ x"$SECSIZE" = x256 ]; then
		MINBLKSIZE=512
		MAXBLKSIZE=32768
	    fi
	    ;;
	xvfat* | xmsdos*)
	    MINBLKSIZE=$SECSIZE
	    MAXBLKSIZE=$((128*SECSIZE))
	    ;;
	xexfat*)
	    MINBLKSIZE=$SECSIZE
		# It could go further but it requires more and more space
	    MAXBLKSIZE=8286208
	    ;;
	xhfs)
	    MINBLKSIZE=512
	    # OS LIMITATION: should be 1048576 but linux hangs on unmnount with
	    # >= 524288
	    MAXBLKSIZE=262144
	    ;;
	xhfsplus | xhfsplus_casesens | xhfsplus_wrap)
	    MINBLKSIZE=512
	    MAXBLKSIZE=1048576
	    ;;
	xnilfs2)
	    MINBLKSIZE=1024
	    MAXBLKSIZE=4096
	    ;;
	xsfs*)
	    MINBLKSIZE=512
	    MAXBLKSIZE=4096
	    ;;
	xaffs | xaffs_intl)
	    MINBLKSIZE=512
	    MAXBLKSIZE=4096
	    ;;
	xreiserfs*)
	    MINBLKSIZE=512
		# OS LIMITATION: 8192 isn't supported.
	    MAXBLKSIZE=4096
	    ;;
	x"mdraid"*)
	    MINBLKSIZE=4096
		# OS LIMITATION: Linux oopses with >=32768K
	    MAXBLKSIZE=$((16384*1024))
	    ;;
	x"lvm_raid4" | x"lvm_raid5" | x"lvm_raid6")
		# OS LIMITATION: Linux crashes with less than 16384
	    MINBLKSIZE=16384
		# Could go further but what's the point?
	    MAXBLKSIZE=$((65536*1024))
	    ;;
	x"lvm_mirrorall")
	    MINBLKSIZE=2048
		# Could go further but what's the point?
	    MAXBLKSIZE=$((65536*1024))
	    ;;
	x"lvm_mirror1")
	    MINBLKSIZE=4096
		# Could go further but what's the point?
	    MAXBLKSIZE=$((65536*1024))
	    ;;
	x"lvm_stripe")
	    MINBLKSIZE=4096
		# Could go further but what's the point?
	    MAXBLKSIZE=$((65536*1024))
	    ;;
	x"lvm"*)
	    MINBLKSIZE=1024
		# Could go further but what's the point?
	    MAXBLKSIZE=$((65536*1024))
	    ;;
	xext*)
	    MINBLKSIZE=1024
	    if [ $MINBLKSIZE -lt $SECSIZE ]; then
		MINBLKSIZE=$SECSIZE
	    fi
	    MAXBLKSIZE=4096
	    ;;
	xsquash*)
	    MINBLKSIZE=4096
	    MAXBLKSIZE=1048576;;
	xxfs)
	    MINBLKSIZE=$SECSIZE
		# OS Limitation: GNU/Linux doesn't accept > 4096
	    MAXBLKSIZE=4096;;
	xudf)
	    MINBLKSIZE=1024
	    MAXBLKSIZE=4096;;
	xbfs)
	    MINBLKSIZE=1024
	    MAXBLKSIZE=8192;;
	xufs*)
	    MINBLKSIZE=4096
		# OS Limitation: Linux rejects 65536 blocks.
	    MAXBLKSIZE=32768;;
	xminix3)
		# OS LIMITATION: Linux rejects non-power-of-two blocks.
		# OS LIMITATION: Linux rejects > 4096.
	    MINBLKSIZE=1024
	    MAXBLKSIZE=4096;;
    esac
    for ((BLKSIZE=MINBLKSIZE;BLKSIZE<=MAXBLKSIZE;BLKSIZE=BLKSTEP?BLKSIZE+BLKSTEP:2*BLKSIZE)); do
	MAXDEVICES=1
	MINDEVICES=1
	export fs
	case x"$fs" in
	    x"zfs_raidz" | x"zfs_stripe" | x"zfs_mirror" | xbtrfs_raid0 \
		| xbtrfs_raid1 | x"mdraid"*"_raid4" | x"mdraid"*"_raid5" \
		| x"mdraid"*"_linear" \
		| x"mdraid"*"_raid10" | xlvm_mirror1 | xlvm_mirrorall)
		MINDEVICES=2
		MAXDEVICES=7
		;;
	    xbtrfs_raid10)
		MINDEVICES=4
		MAXDEVICES=7
		;;
	    x"zfs_raidz2"| xlvm_raid5 | xlvm_raid4)
		MINDEVICES=3
		MAXDEVICES=7;;
	    x"zfs_raidz3" | x"mdraid"*"_raid6")
		MINDEVICES=4
		MAXDEVICES=7;;
	    xlvm_raid6)
		MINDEVICES=5
		MAXDEVICES=7;;
	    x"mdraid"*"_raid0" | x"mdraid"*"_raid1" | x"lvm" | xlvm_stripe)
		MINDEVICES=1
		MAXDEVICES=7;;
	esac

	for ((NDEVICES=MINDEVICES; NDEVICES <= MAXDEVICES; NDEVICES++)); do
	    export NDEVICES
	    unset FSIMAGES
	    for ((i=0; i < NDEVICES; i++)); do
		FSIMAGES[i]="${tempdir}/${fs}_${SECSIZE}_${BLKSIZE}_${NDEVICES}_$i.img"
	    done
	    export FSIMAGES
	    unset NEED_IMAGES;

	    case x$fs in
  	    # RAID 1 has to work with even one device of the set.
		xzfs_mirror | x"mdraid"*"_raid1" | xlvm_mirrorall)
		    NEED_IMAGES_N=1;;
            # Degrade raidz by removing 3 devices
		xzfs_raidz3)
		    NEED_IMAGES_N=$((NDEVICES-3));;
	     # Degrade raidz by removing 2 devices
		xzfs_raidz2 | x"mdraid"*"_raid6" | x"lvm_raid6")
		    NEED_IMAGES_N=$((NDEVICES-2));;
	    # Degrade raidz and btrfs RAID1 by removing one device
 		xbtrfs_raid1 | xbtrfs_raid10 | xzfs_raidz | x"mdraid"*"_raid4" \
		    | x"mdraid"*"_raid5" | x"mdraid"*"_raid10" | xlvm_mirror1 \
		    | x"lvm_raid4" | x"lvm_raid5")
		    NEED_IMAGES_N=$((NDEVICES-1));;
		*)
		    NEED_IMAGES_N=$NDEVICES;;
	    esac
	    for ((i=0;i < NEED_IMAGES_N; i++)); do
		NEED_IMAGES[i]="${FSIMAGES[i]}";
	    done
	    export NEED_IMAGES_N
	    export NEED_IMAGES

	    MNTPOINTRO="${tempdir}/${fs}_ro"
	    MNTPOINTRW="${tempdir}/${fs}_rw"
	    MOUNTOPTS=""
	    MOUNTFS="$fs"
	    MASTER="${tempdir}/master"
	    FSLABEL="grub_;/testé莭莽茝😁киритi urewfceniuewruevrewnuuireurevueurnievrewfnerfcnevirivinrewvnirewnivrewiuvcrewvnuewvrrrewniuerwreiuviurewiuviurewnuvewnvrenurnunuvrevuurerejiremvreijnvcreivire nverivnreivrevnureiorfnfrvoeoiroireoireoifrefoieroifoireoifoirefoireoifoijfoirereoireoivoioirevoinvoinreoinvnoieoinreoinveoinveoinreoinvoineoinoinoineoinernoiveoinvreoiioewdioewoirvnoireoivfoirewfewoifoijewoijfoijewfoijfewoijoijoijoijoijoijoijfewceniuewruevrewnuuireurevueurnievrewfnerfcnevirivinrewvnirewnivrewiuvcrewvnuewvrrrewniuerwreiuviurewiuviurewnuvewnvrenurnunuvrevuurerejiremvreijnvcreivire nverivnreivrevnureiorfnfrvoeoiroireoireoifrefoieroifoireoifoirefoireoifoijfoirereoireoivoioirevoinvoinreoinvnoieoinreoinveoinveoinreoinvoineoinoinoineoinernoiveoinvreoiioewdioewoirvnoireoivfoirewfewoifoijewoijfoijewfoijfewoijoijoijoijoijoijoijfewrewfceniuewruevrewnuuireurevueurnievrewfnerfcnevirivinrewvnirewnivrewiuvcrewvnuewvrrrewniuerwreiuviurewiuviurewnuvewnvrenurnunuvrevuurerejiremvreijnvcreivire nverivnreivrevnureiorfnfrvoeoiroireoireoifrefoieroifoireoifoirefoireoifoijfoirereoireoivoioirevoinvoinreoinvnoieoinreoinveoinveoinreoinvoineoinoinoineoinernoiveoinvreoiioewdioewoirvnoireoivfoirewfewoifoijewoijfoijewfoijfewoijoijoijoijoijoijoijfewceniuewruevrewnuuireurevueurnievrewfnerfcnevirivinrewvnirewnivrewiuvcrewvnuewvrrrewniuerwreiuviurewiuviurewnuvewnvrenurnunuvrevuurerejiremvreijnvcreivire nverivnreivrevnureiorfnfrvoeoiroireoireoifrefoieroifoireoifoirefoireoifoijfoirereoireoivoioirevoinvoinreoinvnoieoinreoinveoinveoinreoinvoineoinoinoineoinernoiveoinvreoiioewdioewoirvnoireoivfoirewfewoifoijewoijfoijewfoijfewoijoijoijoijoijoijoijfew"
	    CFILESN=1
	    if test -f /usr/share/dict/american-english; then
		CFILESSRC[0]="/usr/share/dict/american-english"
	    else
		CFILESSRC[0]="/usr/share/dict/linux.words"
	    fi
	    case x"$fs" in
		    # FS LIMITATION: 8.3 names
		xmsdos*)
		    CFILES[0]="american.eng";;
		xiso9660)
		    CFILES[0]="american_english";;
		*)
		    CFILES[0]="american-english";;
	    esac
        # OS LIMITATION: Limited by NAME_MAX (usually 255) in GNU/Linux
	    LONGNAME="qwertzuiopasdfghjklyxcvbnm1234567890qwertzuiopasdfghjklyxcvbnm1234567890oiewqfiewioqoiqoiurqruewqoiuwoieoiiuewqroreqiufieiuwrnureweriuvceoiroiewqoiricdsalkcndsakfirefoiwqeoircorejwoijfreoijojoiewjfwnfcoirenfoirefnreoifenoiwfnoirewoifoiwqwoieqfrqwioerijewr"
	    rm -rf "$MASTER"

	    case x"$fs" in
	        # FS LIMITATION: HFS+ label is at most 255 UTF-16 chars
		# OS LIMITATION: Linux HFS+ tools check UTF-8 length and don't
		# handle out-of-BMP characters
		x"hfsplus" | x"hfsplus_casesens" | x"hfsplus_wrap")
		    FSLABEL="grub_;/testé䏌䐓䏕киритi urewfceniuewruevrewnuuireurevueurnievrewfnerfcnevirivinrewvnirewnivrewiuvcrewvnuewvrrrewniuerwreiuviurewiuviurewnuvewnvrenurnunuvrevuurerejiremvreijnvcreivire nverivnreivrevnureiorfnfrvoeoiroireoireoifrefoieroifoireoifoiq"
		    ;;
	    # FS LIMITATION: btrfs label is at most 255 UTF-8 chars
		x"btrfs"*)
		    FSLABEL="grub_;/testé莭莽😁киритi urewfceniuewruevrewnuuireurevueurnievrewfnerfcnevirivinrewvnirewnivrewiuvcrewvnuewvrrrewniuerwreiuviurewiuviurewnuvewnvrenurnunuvrevuurerejiremvreijnvcreivire nverivnreivrevnureiorfnfrvoeoiroireoireoifrefoieroifoireoif";;

	    # FS LIMITATION: exfat is at most 15 UTF-16 chars
		x"exfat")
		    FSLABEL="géт ;/莭莽😁кир";;
	    # FS LIMITATION: ntfs label is at most ?? UTF-16 chars
		x"ntfs"*)
		    FSLABEL="grub_;/testéтi u莭😁茝кириrewfceniuewruevrewnuuireurevueurnievrewfnerfcnevirivinrewvniwnivrewiuvcrewvnuewvrrrewniureifiuewifjiww";;
	    # FS LIMITATION: nilfs2 label is at most 80 UTF-8 characters
		x"nilfs2")
		    FSLABEL="grub_;/testéтi u😁莽茝кириrewfceniuewruevrewnuuireurevueurnievrewfne";;
 	            # FS LIMITATION: afs and iso9660 label is at most 32 UTF-8 characters
		x"afs" | xiso9660 | xrockridge | xrockridge_joliet\
                     | xiso9660_1999 | xrockridge_1999 | xrockridge_joliet_1999)
		     FSLABEL="gr_;/é莭莽😁кирит u";;
 	            # FS LIMITATION: bfs label is at most 32 UTF-8 characters
 	            # OS LIMITATION: bfs label can't contain ; or /
		x"bfs")
		    FSLABEL="grub_é莭莽😁кирит u";;
 	        # FS LIMITATION: Joliet label is at most 16 UTF-16 characters
		# OS LIMITATION: xorriso doesn't handle out-of-BMP characters
		xjoliet | xjoliet_1999)
		    FSLABEL="g;/_é䏌䐓䏕䎛䎾䏴кит u"
		    #FSLABEL="g;/_é莭莽😁кит u"
		    ;;
	    # FS LIMITATION: reiserfs, extN and jfs label is at most 16 UTF-8 characters
		x"reiserfs_old" | x"reiserfs" | x"ext"* | x"lvm"* | x"mdraid"* | x"jfs" | x"jfs_caseins")
		    FSLABEL="g;/éт 莭😁";;
            # FS LIMITATION: No underscore, space, semicolon, slash or international characters in UFS* in label. Limited to 32 UTF-8 characters
		x"ufs1" | x"ufs1_sun" | x"ufs2")
		    FSLABEL="grubtest""ieurrucnenreeiurueurewf";;
	    # FS LIMITATION: XFS label is at most 12 UTF-8 characters
		x"xfs")
		    FSLABEL="géт 😁к";;
            # FS LIMITATION: FAT labels limited to 11 characters, no  international characters or lowercase
		x"vfat"* | xmsdos*)
		    FSLABEL="GRUBTEST ;_";;
	    # FS LIMITATION: AFFS is latin1. At most 29 characters
		x"affs" | xaffs_intl)
		    FSLABEL="grub_tt? #*w;/e£@¡¤½¾{[]}<>.,";;
	    # FS LIMITATION: SFS is latin1. At most 30 characters
		x"sfs"*)
		    FSLABEL="GRUB tt öäüé;/àèç åø¿ª©þð׫»µ¬";;
	    # FS LIMITATION:  HFS is Mac-Roman. At most 27 characters
		x"hfs")
		    FSLABEL="grub_t;/estéàèèéie fiucnree";;
	        # FS LIMITATION: UDF label is either up to 127 latin1 characters or 63 UTF-16 ones
		# OS LIMITATION: Linux UDF tools force ASCII label ...
		x"udf")
		    FSLABEL="grub_;/testurewfceniuewruevrewnuuireurevueurnievr";;
	    # FS LIMITATION:  ZFS doesn't accept non-ASCII in label
	    # FIXME: since this is used as a path component for mount it's very limited in length
		xzfs_* | xzfs)
		    FSLABEL="grub_testieufiue r";;
	    esac
	    case x"$fs" in
		xmdraid*)
		    DISKSIZE=314572800;;
		xlvm*)
		    LVMBLKMUL=$(((5800 * 1048576) / (8 * BLKSIZE * NDEVICES)))
		    DISKSIZE=$((8*BLKSIZE*LVMBLKMUL));;
		    # FS LIMITATION: some fs have disk size limit
		x"vfat12" | xmsdos12)
		    DISKSIZE=$((4000*BLKSIZE));;
		x"vfat12a" | xmsdos12a)
		    if [ $BLKSIZE -ge 2048 ]; then
			DISKSIZE=$((2500*BLKSIZE))
		    else
			DISKSIZE=$((3000*BLKSIZE))
		    fi
		    if [ $DISKSIZE -gt $((60000*SECSIZE)) ]; then
			DISKSIZE=$((60000*SECSIZE))
		    fi;;
		x"vfat16" | xmsdos16)
		    DISKSIZE=$((65000*BLKSIZE));;
		x"vfat16a" | xmsdos16a)
		    DISKSIZE=$((60000*SECSIZE))
		    ;;
		*)
		    DISKSIZE=10737418240;;
	    esac

	    if [ $DISKSIZE -ge $(((5800/NDEVICES)*1048576)) ]; then
		DISKSIZE=$(((5800/NDEVICES)*1048576))
	    fi

	    case x"$fs" in
		xvfat* | xmsdos* | xexfat* | xhfs | xhfsplus | xhfsplus_wrap | xaffs \
		    | xaffs_intl | xjfs_caseins | xsfs_caseins \
		    | xzfs_caseins | xiso9660)
		    CASESENS=n;;
		*)
		    CASESENS=y;;
	    esac

	    BIGBLOCKCNT=$((5000 * 1048576))
	    case x"$fs" in
		    # FS LIMITATION: small filesystems
		x"vfat12" | xmsdos12)
		    if [ $BLKSIZE -le 4096 ]; then
			BIGBLOCKCNT=0
		    elif [ $BLKSIZE = 8192 ]; then
			BIGBLOCKCNT=1500000
		    else
			BIGBLOCKCNT=$((2000*BLKSIZE))
		    fi
		    ;;
		x"vfat12a" | xmsdos12a)
		    if [ $BLKSIZE -le 4096 ] || [ $((128*SECSIZE)) = $BLKSIZE ]; then
			BIGBLOCKCNT=0
		    else
			BIGBLOCKCNT=700000
		    fi;;
		x"vfat16a" | xmsdos16a)
		    if [ $((128*SECSIZE)) = $BLKSIZE ]; then
			BIGBLOCKCNT=0
		    else
			BIGBLOCKCNT=$((2500*SECSIZE))
		    fi
		    ;;
		x"vfat16" | xmsdos16)
		    BIGBLOCKCNT=$((25000 * BLKSIZE))
		    if [ $BIGBLOCKCNT -gt $((16#ffffffff)) ]; then
			BIGBLOCKCNT=$((16#ffffffff))
		    fi
		    ;;
		x"minix")
		    BIGBLOCKCNT=30000000;;

		xexfat)
			# Big blocks waste really a lot of space.
			# Not much is left.
		    if [ $BLKSIZE = 2097152 ]; then
			BIGBLOCKCNT=4500000000
		    fi
		    if [ $BLKSIZE = 4194304 ]; then
			BIGBLOCKCNT=3500000000
		    fi
		    ;;
		    # FS LIMITATION: romfs image is limited to 4G.
		x"romfs")
		    BIGBLOCKCNT=$((4000 * 1048576));;
		    # FS LIMITATION: These FS have uint32 as file size field
		x"vfat"* | xmsdos* | x"cpio_crc" | x"cpio_newc" | x"cpio_bin" | x"cpio_hpbin" | xsfs*)
		    BIGBLOCKCNT=$((16#ffffffff));;
		    # FS LIMITATION: These FS have int32 as file size field
		    # FIXME: not so sure about AFFS
		    # OS LIMITATION: minix2/minix3 could be formatted in a way to permit more.
		x"minix3" | x"minix2" | x"hfs"| x"affs" | xaffs_intl | xreiserfs_old | xext2_old)
		    BIGBLOCKCNT=$((16#7fffffff));;

		    # FS LIMITATION: redundant storage
		    # We have only limited space. Mirroring multiplies it very effectively.
		xmdraid* | xlvm* | xzfs_mirror | xbtrfs_raid1)
		    BIGBLOCKCNT=$((100 * 1048576));;
   	            # We already test the FS for big files separately. Save some time here.
		x"zfs_raid"* | x"zfs_stripe"* | x"zfs_mirror"* | x"btrfs_raid"*)
		    BIGBLOCKCNT=$((100 * 1048576));;

                    # OS LIMITATION: bfs_fuse bugs beyond that
		xbfs)
		    BIGBLOCKCNT=$((800 * 1048576));;
	    esac

	    NOSYMLINK=n
	    case x"$fs" in
        # FS LIMITATION: no symlinks on FAT, exFAT, HFS, plain ISO9660 and Joliet
        # OS LIMITATION: ntfs-3g  creates interix symlinks which aren't real symlinks
		x"vfat"* | xmsdos* | x"hfs" | x"exfat" | x"ntfs"* \
		    | xiso9660 | xjoliet| xiso9660_1999 | xjoliet_1999)
		    NOSYMLINK=y;;
	    esac
	    NOHARDLINK=n
	    case x"$fs" in
                    # FS LIMITATION: no hardlinks on BFS, exfat, fat, hfs and SFS
		xbfs | xexfat | x"vfat"* | xmsdos* | xhfs | xsfs | xsfs_caseins)
		    NOHARDLINK=y;;
		    # GRUB LIMITATION: no hardlink support on newc and hfs+
		xcpio_crc | xcpio_newc | xhfsplus*)
		    NOHARDLINK=y;;
	    esac

                # FS LIMITATION: some filesystems limit file name size
	    case x"$fs" in
		x"cpio_ustar")
		    LONGNAME="`echo $LONGNAME |head -c 99`";;
		x"hfs")
		    LONGNAME="`echo $LONGNAME |head -c 31`";;
		x"minix" | x"minix2" | x"affs" | xaffs_intl | xiso9660)
		    LONGNAME="`echo $LONGNAME |head -c 30`";;
		x"sfs"*)
		    LONGNAME="`echo $LONGNAME |head -c 105`";;
		x"minix3")
		    LONGNAME="`echo $LONGNAME |head -c 60`";;
		x"udf")
		    LONGNAME="`echo $LONGNAME |head -c 192`";;
		    # GRUB LIMITATION: GRUB prefers Joliet over ISO9660:1999
		xjoliet | xjoliet_1999)
		    LONGNAME="`echo $LONGNAME |head -c 103`";;
		xiso9660_1999)
		    LONGNAME="`echo $LONGNAME |head -c 207`";;
		    # FS LIMITATION: 8.3
		xmsdos*)
		    LONGNAME="qwertzui.opa";;
	    esac
	    NOFILETIME=n
	    NOFSTIME=n
	    case x"$fs" in
	    # FIXME: Not sure about BtrFS, NTFS, JFS, AFS, UDF and SFS. Check it.
	# FS LIMITATION: as far as I know those FS don't store their last modification date.
		x"jfs_caseins" | x"jfs" | x"xfs"| x"btrfs"* | x"reiserfs_old" | x"reiserfs" \
		    | x"bfs" | x"afs" \
		    | x"tarfs" | x"cpio_"* | x"minix" | x"minix2" \
		    | x"minix3" | x"ntfs"* | x"udf" | x"sfs"*)
		    NOFSTIME=y;;
		    # OS LIMITATION: Linux doesn't update fstime.
		# OS LIMITATION: Linux apparently uses localtime instead of UTC
		xhfs)
		    NOFILETIME=y; NOFSTIME=y;;
	    # GRUB LIMITATION:  FAT and exFAT use localtime. Unusable for GRUB
		x"vfat"* | x"msdos"* | x"exfat")
		    NOFILETIME=y; NOFSTIME=y;;
	# FS LIMITATION: romfs has no timestamps.
		x"romfs")
		    NOFILETIME=y; NOFSTIME=y;;
	    esac

	    NOFSLABEL=n
	    case x"$fs" in
   	            # FS LIMITATION: these filesystems have no label.
		x"cpio_"* | x"tarfs" | x"squash4_"* | x"minix" | x"minix2" \
		    | x"minix3" | xreiserfs_old)
		    NOFSLABEL=y;;
	    esac

	    PDIRCOMPNUM=220
	    PDIR2COMPNUM=220

	    case x$fs in
		    # OS LIMITATION: bfs_fuse bugs beyond that
		xbfs)
		    PDIRCOMPNUM=10
		    PDIR2COMPNUM=10;;
		    # OS LIMITATION: Linux supports only inline symlinks
		xudf)
		    if [ $BLKSIZE = 1024 ]; then
			PDIR2COMPNUM=113
		    fi ;;
		    # FS LIMITATION: at most 255 on path length
		    # FS LIMITATION: at most 100 on symlink length
		xcpio_ustar)
		    PDIRCOMPNUM=85
		    PDIR2COMPNUM=30;;
		    # OS LIMITATION: Linux supports only symlink at most one block long on reiserfs
		xreiserfs | xreiserfs_old)
		    if [ $BLKSIZE = 512 ]; then
			PDIR2COMPNUM=114
		    fi ;;
		    # FS LIMITATION: SFS assumes that symlink
		    # with header fit in one block.
		    # FIXME: not sure about it.
		xsfs | xsfs_caseins)
		    if [ $BLKSIZE = 512 ]; then
			PDIR2COMPNUM=147
		    fi ;;
		    # FS LIMITATION: AFFS assumes that symlink
		    # with rather larger header fit in one block.
		    # FIXME: not sure about it.
		xaffs | xaffs_intl)
		    if [ $BLKSIZE = 512 ]; then
			PDIR2COMPNUM=97
		    fi ;;
	    esac


	    PDIR=""
		# OS LIMITATION: Limited by PATH_MAX (usually 1024)
	    for ((i=0;i<PDIRCOMPNUM;i++)); do
		PDIR="$PDIR/$i";
		if [ $((i%3)) == 0 ]; then
		    PDIR="$PDIR/"
		fi
	    done

	    PDIR2=""
		# OS LIMITATION: Limited by PATH_MAX (usually 1024)
	    for ((i=0;i<PDIR2COMPNUM;i++)); do
		PDIR2="${PDIR2}/$i";
		if [ $((i%3)) == 0 ]; then
		    PDIR2="${PDIR2}/"
		fi
	    done

	    PFIL="p.img"

	    unset LODEVICES
	    GENERATED=n

	    case x"$fs" in
		x"tarfs" | x"cpio_"*| x"ziso9660" | x"romfs" | x"squash4_"*\
                    | x"iso9660" | xjoliet | xrockridge | xrockridge_joliet \
		    | x"iso9660_1999" | xjoliet_1999 | xrockridge_1999 \
		    | xrockridge_joliet_1999)
		    MNTPOINTRW="$MASTER"
		    MNTPOINTRO="$MASTER"
		    GENERATED=y
		    mkdir -p "$MASTER";;
  	            # No mkfs for GNU/Linux. Just unpack preformatted empty image
		*)
		    mkdir -p "$MNTPOINTRW"
		    mkdir -p "$MNTPOINTRO"
		    for ((i=0; i < NDEVICES; i++)); do
			dd if=/dev/zero of="${FSIMAGES[i]}" count=1 bs=1 seek=$((DISKSIZE-1)) &> /dev/null
			LODEVICES[i]=`losetup -f`
			losetup "${LODEVICES[i]}" "${FSIMAGES[i]}"
		    done ;;
	    esac

	    MOUNTDEVICE="${LODEVICES[0]}"
	    case x"$fs" in
		x"afs")
		    ;;
		x"btrfs")
		    "mkfs.btrfs" -s $SECSIZE -L "$FSLABEL" "${LODEVICES[0]}" ;;
		x"btrfs_zlib" | x"btrfs_lzo")
		    "mkfs.btrfs" -s $SECSIZE -L "$FSLABEL" "${LODEVICES[0]}"
		    MOUNTOPTS="compress=${fs/btrfs_/},"
		    MOUNTFS="btrfs"
		    ;;
		x"btrfs_raid0")
		    "mkfs.btrfs" -s $SECSIZE -d raid0 -m raid0 -L "$FSLABEL" "${LODEVICES[@]}"
		    MOUNTFS="btrfs"
		    ;;
		x"btrfs_raid1")
		    "mkfs.btrfs" -s $SECSIZE -d raid1 -m raid1 -L "$FSLABEL" "${LODEVICES[@]}"
		    MOUNTFS="btrfs"
		    ;;
		x"btrfs_raid10")
		    "mkfs.btrfs" -s $SECSIZE -d raid10 -m raid10 -L "$FSLABEL" "${LODEVICES[@]}"
		    MOUNTFS="btrfs"
		    ;;
		x"btrfs_single")
		    "mkfs.btrfs" -s $SECSIZE -d single -L "$FSLABEL" "${LODEVICES[@]}"
		    MOUNTFS="btrfs"
		    ;;
		x"exfat")
		    "mkfs.$fs" -s $((BLKSIZE/512)) -n "$FSLABEL" "${LODEVICES[0]}"
		    MOUNTOPTS="iocharset=utf8,"
		    MOUNTFS="exfat-fuse";;
		x"minix")
		    "mkfs.minix" "${LODEVICES[0]}"
		    ;;
	# mkfs.hfs and mkfs.hfsplus don't fill UUID.
		x"hfsplus")
		    "mkfs.hfsplus" -b $BLKSIZE -v "$FSLABEL" "${LODEVICES[0]}"
		    dd if=/dev/urandom of="${LODEVICES[0]}" bs=1 seek=$((16#468)) conv=notrunc count=8 ;;
		x"hfsplus_wrap")
		    "mkfs.hfsplus" -w -b $BLKSIZE -v "$FSLABEL" "${LODEVICES[0]}"
		    dd if=/dev/urandom of="${LODEVICES[0]}" bs=1 seek=$((16#468)) conv=notrunc count=8
		    MOUNTFS="hfsplus";;
		x"hfsplus_casesens")
		    "mkfs.hfsplus" -s -b $BLKSIZE -v "$FSLABEL" "${LODEVICES[0]}"
		    dd if=/dev/urandom of="${LODEVICES[0]}" bs=1 seek=$((16#468)) conv=notrunc count=8
		    MOUNTFS="hfsplus";;
		x"hfs")
		    "mkfs.hfs" -b $BLKSIZE -v "`echo $FSLABEL |recode utf8..macroman`" -h "${LODEVICES[0]}"
		    dd if=/dev/urandom of="${LODEVICES[0]}" bs=1 seek=$((16#474)) conv=notrunc count=8
		    MOUNTOPTS="iocharset=utf8,codepage=macroman,"
		    ;;
		x"vfat"*|xmsdos*)
		    BITS="${fs/vfat/}"
		    BITS="${BITS/msdos/}"
		    if [ "x${BITS:2:1}" = xa ]; then
			A=-A
		    else
			A=
		    fi
		    "mkfs.vfat" -a $A -S $SECSIZE -s $((BLKSIZE/SECSIZE)) -F "${BITS:0:2}" -n "$FSLABEL" "${LODEVICES[0]}"
		    MOUNTOPTS="iocharset=utf8,codepage=437,"
		    MOUNTFS="$(echo "$fs"|sed 's,[0-9]*a\?$,,')";;
		x"minix2")
		    "mkfs.minix" -v "${LODEVICES[0]}"
		    MOUNTFS="minix";;
		x"minix3")
		    "mkfs.minix" -B $BLKSIZE -3 "${LODEVICES[0]}"
		    MOUNTFS="minix";;
		x"ntfs"*)
		    "mkfs.ntfs" -s "$SECSIZE" -c "$BLKSIZE" -L "$FSLABEL" -Q -q "${LODEVICES[0]}"
		    MOUNTOPTS="iocharset=utf8,compression,"
		    MOUNTFS="ntfs-3g";;
		x"udf")
		    "/usr/bin/mkudffs" -b $BLKSIZE --utf8 --lvid="$FSLABEL" "${LODEVICES[0]}"
		    MOUNTOPTS="iocharset=utf8,bs=$BLKSIZE,";;
		x"ufs2")
		    "mkfs.ufs" -b $BLKSIZE -L "$FSLABEL" -O 2 "${LODEVICES[0]}"
		    MOUNTOPTS="ufstype=ufs2,"
		    MOUNTFS="ufs";;
		x"ufs1")
		    "mkfs.ufs" -b $BLKSIZE -L "$FSLABEL" -O 1 "${LODEVICES[0]}"
		    MOUNTOPTS="ufstype=44bsd,"
		    MOUNTFS="ufs";;
		x"ufs1_sun")
		    "mkfs.ufs" -b $BLKSIZE -L "$FSLABEL" -O 1 "${LODEVICES[0]}"
		    MOUNTOPTS="ufstype=sun,"
		    MOUNTFS="ufs";;
		x"zfs")
		    "zpool" create -R "$MNTPOINTRW" "$FSLABEL" "${LODEVICES[0]}"
		    sleep 1
		    "zfs" create "$FSLABEL"/"grub fs"
		    sleep 1;;
		x"zfs_caseins")
		    "zpool" create -R "$MNTPOINTRW" "$FSLABEL" "${LODEVICES[0]}"
		    sleep 1
		    "zfs" create -o casesensitivity=insensitive "$FSLABEL"/"grub fs"
		    sleep 1;;
		x"zfs_lzjb" | xzfs_gzip | xzfs_zle)
		    "zpool" create -O compression=${fs/zfs_/} -R "$MNTPOINTRW" "$FSLABEL" "${LODEVICES[0]}"
		    sleep 1
		    "zfs" create -o compression=${fs/zfs_/} "$FSLABEL"/"grub fs"
		    sleep 1;;
		x"zfs_raidz")
		    "zpool" create -R "$MNTPOINTRW" "$FSLABEL" raidz1 "${LODEVICES[@]}"
		    sleep 1
		    "zfs" create "$FSLABEL"/"grub fs"
		    sleep 1;;
		x"zfs_raidz2")
		    "zpool" create -R "$MNTPOINTRW" "$FSLABEL" raidz2 "${LODEVICES[@]}"
		    sleep 1
		    "zfs" create "$FSLABEL"/"grub fs"
		    sleep 1;;
		x"zfs_raidz3")
		    "zpool" create -R "$MNTPOINTRW" "$FSLABEL" raidz3 "${LODEVICES[@]}"
		    sleep 1
		    "zfs" create "$FSLABEL"/"grub fs"
		    sleep 1;;
		x"zfs_mirror")
		    "zpool" create -R "$MNTPOINTRW" "$FSLABEL" mirror "${LODEVICES[@]}"
		    sleep 1
		    "zfs" create "$FSLABEL"/"grub fs"
		    sleep 1;;
		x"zfs_stripe")
		    "zpool" create -R "$MNTPOINTRW" "$FSLABEL" "${LODEVICES[@]}"
		    sleep 1
		    "zfs" create "$FSLABEL"/"grub fs"
		    sleep 1;;
		x"tarfs" | x"cpio_"* | x"iso9660" | xjoliet | xrockridge | xrockridge_joliet | x"iso9660_1999" | xjoliet_1999 | xrockridge_1999 | xrockridge_joliet_1999 | x"ziso9660" | x"romfs" | x"squash4_"*)
		    INSTDEVICE=/dev/null;;
		x"reiserfs")
		    "mkfs.reiserfs" --format=3.6 -b $BLKSIZE -l "$FSLABEL" -q "${LODEVICES[0]}" ;;
		x"reiserfs_old")
		    "mkfs.reiserfs" --format=3.5 -b $BLKSIZE -l "$FSLABEL" -q "${LODEVICES[0]}"
		    MOUNTFS=reiserfs;;
		x"jfs")
		    "mkfs.jfs" -L "$FSLABEL" -q "${LODEVICES[0]}"
		    MOUNTOPTS="iocharset=utf8,";;
		x"jfs_caseins")
		    "mkfs.jfs" -O -L "$FSLABEL" -q "${LODEVICES[0]}"
		    MOUNTFS=jfs
		    MOUNTOPTS="iocharset=utf8,";;
		x"mdraid"*)
		    mdadm -C --chunk=$((BLKSIZE/1024)) --force -e "${fs:6:1}.${fs:7:1}" "/dev/md/${fs}_${NDEVICES}" --level="${fs:13}" --raid-devices="$NDEVICES" "${LODEVICES[@]}"
		    MOUNTDEVICE="/dev/md/${fs}_${NDEVICES}"
		    MOUNTFS=ext2
		    "mkfs.ext2" -L "$FSLABEL" -q "${MOUNTDEVICE}" ;;
		x"lvm"*)
		    for ((i=0;i<NDEVICES;i++)); do
			pvcreate "${LODEVICES[i]}"
		    done
		    vgcreate -s $((BLKSIZE/1024))K grub_test "${LODEVICES[@]}"
		    if [ x$fs = xlvm ] ; then
			lvcreate -l "$((NDEVICES*7*LVMBLKMUL))" -n testvol grub_test
		    elif [ x$fs = xlvm_stripe ] ; then
			lvcreate -l "$((NDEVICES*7*LVMBLKMUL))" -i "$NDEVICES" -n testvol grub_test
		    elif [ x$fs = xlvm_mirror1 ] ; then
			lvcreate -m 1 -l "$((NDEVICES*2*LVMBLKMUL))" -n testvol grub_test
		    elif [ x$fs = xlvm_mirrorall ] ; then
			lvcreate -m "$((NDEVICES-1))" -l "$((6*LVMBLKMUL))" -n testvol grub_test
		    elif [ x$fs = xlvm_raid4 ] || [ x$fs = xlvm_raid5 ]; then
			lvcreate -l "$(((NDEVICES-1) * 5*LVMBLKMUL))" -i "$((NDEVICES-1))" --type "${fs/lvm_/}" -n testvol grub_test
		    elif [ x$fs = xlvm_raid6 ]; then
			lvcreate -l "$(((NDEVICES-2) * 5*LVMBLKMUL))" -i "$((NDEVICES-2))" --type "${fs/lvm_/}" -n testvol grub_test
		    fi
		    MOUNTDEVICE="/dev/mapper/grub_test-testvol"
		    MOUNTFS=ext2
		    "mkfs.ext2" -L "$FSLABEL" -q "${MOUNTDEVICE}"  ;;
		xnilfs2)
		    "mkfs.nilfs2" -L "$FSLABEL" -b $BLKSIZE  -q "${LODEVICES[0]}" ;;
		xext2_old)
		    MKE2FS_DEVICE_SECTSIZE=$SECSIZE "mkfs.ext2" -r 0 -b $BLKSIZE -L "$FSLABEL" -q "${LODEVICES[0]}"
		    MOUNTFS=ext2
		    ;;
		xext4_metabg)
		    MKE2FS_DEVICE_SECTSIZE=$SECSIZE "mkfs.ext4" -O meta_bg,^resize_inode -b $BLKSIZE -L "$FSLABEL" -q "${LODEVICES[0]}"
		    MOUNTFS=ext4
		    ;;
		xext*)
		    MKE2FS_DEVICE_SECTSIZE=$SECSIZE "mkfs.$fs" -b $BLKSIZE -L "$FSLABEL" -q "${LODEVICES[0]}" ;;
		xxfs)
		    "mkfs.xfs" -b size=$BLKSIZE -s size=$SECSIZE -L "$FSLABEL" -q "${LODEVICES[0]}" ;;
		*)
		    echo "Add appropriate mkfs command here"
		    exit 1
		    ;;
	    esac
	    BASEFILE="1.img"
	    NASTYFILE=".?*\\!\"#%@\$%&'()+ ,-.:;<=>^{_}[]\`|~."
	    case x"$fs" in

 	            # FS LIMITATION: AFFS and SFS don't accept :
		xsfs*)
		    NASTYFILE=".?*\\!\"#%@\$%&'()+ ,-.;<=>^{_}[]\`|~.";;
	            # FS LIMITATION: AFFS is limited in file name length (30)
		x"affs" | xaffs_intl)
		    NASTYFILE=".?*\\!\"#@\$'()+ ,-;<=>^{_}[]\`|~.";;
	    # FS LIMITATION: hfs, minix and minix2 are limited in file name length (30 or 31)
		x"hfs" | x"minix" | x"minix2")
		    NASTYFILE=".?*\\!\"#@\$&'()+ ,-:;<=>{}[]\`|~.";;
	    # FS LIMITATION: FAT doesn't accept ?, *, \, ", :,  <, >, |
	    # FS LIMITATION: FAT discards dots at the end.
		x"vfat"* | x"exfat")
		    NASTYFILE=".!#%@\$%&'()+ ,-.;=^{_}[]\`~";;
	    # FS LIMITATION: 8.3 limitations apply
		x"msdos"*)
		    NASTYFILE="!#%@\$%&.;=^";;
		    # FS LIMITATION: No ' ', '*', '/', ':', ';', '?', '\\' in joliet
		    # GRUB LIMITATION: GRUB prefers Joliet over ISO9660:1999
		xjoliet | xjoliet_1999)
		    NASTYFILE=".!\"#%@\$%&'()+,-.<=>^{_}[]\`|~.";;
		    # FS LIMITATION: iso9660 accepts only [0-9A-Z_]*, 32 characters at most
		xiso9660)
		    NASTYFILE="0123456789_acefghijknopqrvwxyz";;
	    esac

	    case x"$fs" in
 	            # FS LIMITATION: HFS, AFFS and SFS use legacy codepage (mac-roman or latin1)
		x"sfs"* | x"hfs" | x"affs" | xaffs_intl)
		    IFILE="éàèüöäëñ"
		    ISYM="ëñéüöäàè"
		    ;;
		    # FS LIMITATION: filename length limitation.
		x"minix" | x"minix2")
		    IFILE="éàèüö😁ñкиΕλκά"
		    ISYM="Ελκάкиéà😁öäëñ"
		    ;;
		xminix3)
		    IFILE="éàèüöäëñкирица莭茝Ελλικά😁😜😒"
		    ISYM="Ελλικά😁😜😒莭茝кирицаéàèüöäëñ";;
	        # GRUB LIMITATION: HFS+ uses NFD. GRUB doesn't handle NF conversion.
		# OS LIMITATION: Linux doesn't handle out-of-BMP characters for UTF-16
		x"hfsplus" | x"hfsplus_casesens" | x"hfsplus_wrap")
		    IFILE="éàèüöäëñкирилица䏌䐓䏕Ελληνικα̍䏌䐓䏕"
		    ISYM="Ελληνικα̍кирилица䏌䐓䏕éàèüöäëñ䏌䐓䏕"
		    ;;
		    # GRUB LIMITATION: On case-insensitive ZFS isn't supported with non-uppercase characters
		xzfs_caseins)
		    IFILE="ÉÀÈÜÖÄËÑКИРИЛИЦА莭莽茝ΕΛΛΗΝΙΚΆ😁😜😒"
		    ISYM="ΕΛΛΗΝΙΚΆКИРИЛИЦА😁😜😒ÉÀÈÜÖÄËÑ莭莽茝";;
		    # FS LIMITATION: 8.3 CP437
		x"msdos"*)
		    IFILE="éàèüöäëñ.éàè"
		    ;;
		    # FS LIMITATION: iso9660 is ASCII-only.
		x"iso9660")
		    IFILE="abcdefghijkmmnop"
		    ;;
		# OS LIMITATION: Linux doesn't handle out-of-BMP characters for UTF-16
		# OS LIMITATION: xorriso doesn't handle out-of-BMP characters
		xjoliet | xjoliet_1999 | x"vfat"* | x"jfs"* | x"udf"*)
		    IFILE="éàèüöäëñкирилица䏌䐓䏕Ελληνικά䏌䐓䏕"
		    ISYM="Ελληνικάкирилица䏌䐓䏕éàèüöäëñ䏌䐓䏕";;
		*)
		    IFILE="éàèüöäëñкирилица莭莽茝Ελληνικά😁😜😒"
		    ISYM="Ελληνικάкирилица😁😜😒éàèüöäëñ莭莽茝";;
	    esac
	    BIGFILE="big.img"
	    BASESYM="sym"
	    BASEHARD="hard"
	    SSYM="///sdir////ssym"
	    USYM="///sdir////usym"
	    LONGSYM="longsym"
	    PSYM="psym"
	    OSDIR=""
	    GRUBDEVICE=loop0
	    case x"$fs" in
		xmdraid*)
		    GRUBDEVICE="mduuid/`mdadm --detail --export $MOUNTDEVICE | grep MD_UUID=|sed 's,MD_UUID=,,g;s,:,,g'`";;
		xlvm*)
		    GRUBDEVICE="lvm/grub_test-testvol";;
	    esac
	    GRUBDIR="($GRUBDEVICE)"
	    case x"$fs" in
		x"zfs"*)
		    OSDIR="grub fs/"
		    GRUBDIR="($GRUBDEVICE)/grub fs@";;
		x"tarfs" | x"cpio_"* | x"iso9660" | xjoliet | xrockridge | xrockridge_joliet | x"iso9660_1999" | xjoliet_1999 | xrockridge_1999 | xrockridge_joliet_1999 | x"ziso9660" | x"romfs" | x"squash4_"* | xafs)
		    ;;
		*)
		    if ! mount -t "$MOUNTFS" "${MOUNTDEVICE}" "$MNTPOINTRW" -o ${MOUNTOPTS}${SELINUXOPTS}rw  ; then
			echo "MOUNT FAILED."
			for ((i=0; i < NDEVICES; i++)); do
			    while ! losetup -d "${LODEVICES[i]}"; do
				sleep 1
			    done
			    rm "${FSIMAGES[i]}"
			done
			exit 1;
		    fi
		    ;;
	    esac
	    case x"$fs" in
		    # FS LIMITATION: redundant storage
		xmdraid* | xlvm*)
		    BLOCKCNT=1048576;;
		x"zfs_raid"* | x"zfs_stripe"* | x"zfs_mirror"* | x"btrfs_raid"*)
		    BLOCKCNT=1048576;;

		    # FS LIMITATION: small filesystems
		x"vfat16a" | x"msdos16a")
		    BLOCKCNT=65536;;
		x"vfat12a" | xmsdos12a)
		    BLOCKCNT=32768;;
		xminix)
		    BLOCKCNT=2621440;;
		xvfat16 | xmsdos16)
		    if [ $BLKSIZE = 512 ] || [ $BLKSIZE = 1024 ]; then
			BLOCKCNT=1048576
		    else
			BLOCKCNT=5242880
		    fi
		    ;;
		xvfat12 | xmsdos12)
		    BLOCKCNT=$((100*BLKSIZE))
		    if [ $BLOCKCNT -gt 5242880 ]; then
			BLOCKCNT=5242880;
		    fi
		    ;;
		*)
		    BLOCKCNT=5242880;;
	    esac
	    case x"$fs" in
		x"ntfscomp")
		    setfattr -h -v 0x00000800 -n system.ntfs_attrib_be "$MNTPOINTRW/$OSDIR";;
	    esac
		# OS LIMITATION: No AFS support under GNU/Linux
	    mkdir "$MNTPOINTRW/$OSDIR/sdir"
	    mkdir -p "$MNTPOINTRW/$OSDIR/$PDIR"
	    "@builddir@"/garbage-gen $BLOCKCNT > "$MNTPOINTRW/$OSDIR/sdir/2.img"
	    "@builddir@"/garbage-gen $BLOCKCNT > "$MNTPOINTRW/$OSDIR/$BASEFILE"
	    "@builddir@"/garbage-gen $BLOCKCNT > "$MNTPOINTRW/$OSDIR/$NASTYFILE"
	    "@builddir@"/garbage-gen $BLOCKCNT > "$MNTPOINTRW/$OSDIR/$IFILE"
	    "@builddir@"/garbage-gen $BLOCKCNT > "$MNTPOINTRW/$OSDIR/$LONGNAME"
	    "@builddir@"/garbage-gen $BLOCKCNT > "$MNTPOINTRW/$OSDIR/$PDIR/$PFIL"
	    if [ $PDIR != $PDIR2 ]; then
		"@builddir@"/garbage-gen $BLOCKCNT > "$MNTPOINTRW/$OSDIR/${PDIR2}/$PFIL"
	    fi
	    "@builddir@"/garbage-gen $BLOCKCNT > "$MNTPOINTRW/$OSDIR/CaSe"
	    if [ x$CASESENS = xy ]; then
		"@builddir@"/garbage-gen $BLOCKCNT > "$MNTPOINTRW/$OSDIR/cAsE"
	    fi
	    if (test x$fs = xvfat12a || test x$fs = xmsdos12a) && test x$BLKSIZE = x131072; then
		    # With this config there isn't enough space for full copy.
		    # Copy as much as we can
		cp "${CFILESSRC[0]}" "$MNTPOINTRW/$OSDIR/${CFILES[0]}" &> /dev/null;
	    else
		for ((i=0;i<$CFILESN;i++)); do
		    cp "${CFILESSRC[i]}" "$MNTPOINTRW/$OSDIR/${CFILES[i]}";
		done
	    fi

	    if [ x$NOSYMLINK != xy ]; then
		ln -s "$BASEFILE" "$MNTPOINTRW/$OSDIR/$BASESYM"
		ln -s "2.img" "$MNTPOINTRW/$OSDIR/$SSYM"
		ln -s "../1.img" "$MNTPOINTRW/$OSDIR/$USYM"
		ln -s "$LONGNAME" "$MNTPOINTRW/$OSDIR/$LONGSYM"
		ln -s "${PDIR2}/$PFIL" "$MNTPOINTRW/$OSDIR/$PSYM"
		ln -s "$IFILE" "$MNTPOINTRW/$OSDIR/$ISYM"
	    fi
	    if [ x$NOHARDLINK != xy ]; then
		ln "$MNTPOINTRW/$OSDIR/$BASEFILE" "$MNTPOINTRW/$OSDIR/$BASEHARD"
	    fi

	    case x"$fs" in
		x"afs")
		    ;;
		x"zfs"*)
		    while ! zpool export "$FSLABEL" ; do
			sleep 1;
		    done
		    sleep 2
		    ;;
		x"tarfs")
		    (cd "$MASTER"; tar cf "${FSIMAGES[0]}" .) ;;
		x"cpio_"*)
		    (cd "$MASTER"; find . | cpio -o -H "${fs/cpio_/}" > "${FSIMAGES[0]}" ) ;;
		x"ziso9660")
		    FSUUID=$(date -u +%Y-%m-%d-%H-%M-%S-00);
		    xorriso -compliance rec_mtime -set_filter_r --zisofs -- -zisofs default -as mkisofs -iso-level 3 -graft-points -R -J -joliet-long -V "$FSLABEL" --modification-date=$(echo ${FSUUID} | sed 's/-//g;') -o "${FSIMAGES[0]}"  -- -set_filter_r --zisofs -- -zisofs default -add /="$MASTER" ;;
		x"iso9660")
		    FSUUID=$(date -u +%Y-%m-%d-%H-%M-%S-00);
		    xorriso --rockridge off -compliance rec_mtime -as mkisofs -iso-level 3 -graft-points -V "$FSLABEL" --modification-date=$(echo ${FSUUID} | sed 's/-//g;') -o "${FSIMAGES[0]}" /="$MASTER"  ;;
		x"joliet")
		    FSUUID=$(date -u +%Y-%m-%d-%H-%M-%S-00);
		    xorriso --rockridge off  -compliance rec_mtime -as mkisofs -iso-level 3 -graft-points -J -joliet-long -V "$FSLABEL" --modification-date=$(echo ${FSUUID} | sed 's/-//g;') -o "${FSIMAGES[0]}" /="$MASTER"  ;;
		x"rockridge")
		    FSUUID=$(date -u +%Y-%m-%d-%H-%M-%S-00);
		    xorriso --rockridge on -compliance rec_mtime -as mkisofs -iso-level 3 -graft-points -V "$FSLABEL" --modification-date=$(echo ${FSUUID} | sed 's/-//g;') -o "${FSIMAGES[0]}" /="$MASTER"  ;;
		x"rockridge_joliet")
		    FSUUID=$(date -u +%Y-%m-%d-%H-%M-%S-00);
		    xorriso --rockridge on -compliance rec_mtime -as mkisofs -iso-level 3 -graft-points -J -joliet-long -V "$FSLABEL" --modification-date=$(echo ${FSUUID} | sed 's/-//g;') -o "${FSIMAGES[0]}" /="$MASTER"  ;;
		x"iso9660_1999")
		    FSUUID=$(date -u +%Y-%m-%d-%H-%M-%S-00);
		    xorriso --rockridge off -compliance rec_mtime -as mkisofs -iso-level 4 -graft-points -V "$FSLABEL" --modification-date=$(echo ${FSUUID} | sed 's/-//g;') -o "${FSIMAGES[0]}" /="$MASTER"  ;;
		x"joliet_1999")
		    FSUUID=$(date -u +%Y-%m-%d-%H-%M-%S-00);
		    xorriso --rockridge off  -compliance rec_mtime -as mkisofs -iso-level 4 -graft-points -J -joliet-long -V "$FSLABEL" --modification-date=$(echo ${FSUUID} | sed 's/-//g;') -o "${FSIMAGES[0]}" /="$MASTER"  ;;
		x"rockridge_1999")
		    FSUUID=$(date -u +%Y-%m-%d-%H-%M-%S-00);
		    xorriso --rockridge on -compliance rec_mtime -as mkisofs -iso-level 4 -graft-points -V "$FSLABEL" --modification-date=$(echo ${FSUUID} | sed 's/-//g;') -o "${FSIMAGES[0]}" /="$MASTER"  ;;
		x"rockridge_joliet_1999")
		    FSUUID=$(date -u +%Y-%m-%d-%H-%M-%S-00);
		    xorriso --rockridge on -compliance rec_mtime -as mkisofs -iso-level 4 -graft-points -J -joliet-long -V "$FSLABEL" --modification-date=$(echo ${FSUUID} | sed 's/-//g;') -o "${FSIMAGES[0]}" /="$MASTER"  ;;
		x"romfs")
		    genromfs -V "$FSLABEL" -f "${FSIMAGES[0]}" -d "$MASTER" ;;
		xsquash4_*)
		    echo mksquashfs "$MASTER" "${FSIMAGES[0]}" -comp "${fs/squash4_/}" -b $BLKSIZE
		    mksquashfs "$MASTER" "${FSIMAGES[0]}" -comp "${fs/squash4_/}" -b $BLKSIZE ;;
		x"bfs")
		    sleep 1
		    fusermount -u "$MNTPOINTRW"
		    ;;
		xlvm*)
		    sleep 1
		    for ((try=0;try < 20; try++)); do
			if umount "$MNTPOINTRW" ; then
			    break;
			fi
			sleep 1;
		    done
		    sleep 1
		    vgchange -a n grub_test
		    ;;
		xmdraid*)
		    sleep 1
		    for ((try=0;try < 20; try++)); do
			if umount "$MNTPOINTRW" ; then
			    break;
			fi
			sleep 1;
		    done
		    sleep 1
		    mdadm --stop /dev/md/"${fs}_$NDEVICES"
		    ;;
		*)
		    sleep 1
		    for ((try=0;try < 20; try++)); do
			if umount "$MNTPOINTRW" ; then
			    break;
			fi
			sleep 1;
		    done
		    ;;
	    esac
	    sleep 1

	    case x"$fs" in
		x"zfs"*)
		    "zpool" import -d /dev -R "$MNTPOINTRO" "$FSLABEL"
		    ;;
		x"tarfs")
		    ;;
		x"cpio_"*)
		    ;;
		x"ziso9660")
		    ;;
		xiso9660 | xrockridge | xjoliet | xrockridge_joliet)
		    ;;
		xiso9660_1999 | xrockridge_1999 | xjoliet_1999 | xrockridge_joliet_1999)
		    ;;
		x"romfs")
		    ;;
		xsquash4_*)
		    ;;
		xlvm*)
		    vgchange -a y grub_test
		    sleep 1
		    mount -t "$MOUNTFS" "${MOUNTDEVICE}" "$MNTPOINTRO" -o ${MOUNTOPTS}${SELINUXOPTS}ro ;;
		xmdraid*)
		    mdadm --assemble /dev/md/"${fs}_$NDEVICES" "${LODEVICES[@]}"
		    sleep 1
		    mount -t "$MOUNTFS" "${MOUNTDEVICE}" "$MNTPOINTRO" -o ${MOUNTOPTS}${SELINUXOPTS}ro ;;
		*)
		    mount -t "$MOUNTFS" "${MOUNTDEVICE}" "$MNTPOINTRO" -o ${MOUNTOPTS}${SELINUXOPTS}ro ;;
	    esac

	    run_grubfstest ls -- -la
	    case x"$fs" in
		x"zfs"*)
		    LSROUT=$(run_grubfstest ls -- -la "($GRUBDEVICE)/grub fs@/");;
		*)
		    LSROUT=$(run_grubfstest ls -- -la "($GRUBDEVICE)/");;
	    esac
	    if echo "$LSROUT" | grep -F " $BASEFILE" | grep "$BLOCKCNT" > /dev/null; then
		:
	    else
		echo LIST FAIL
		echo "$LSROUT"
		TZ=UTC ls --time-style=+%Y%m%d%H%M%S.%N -l "$MNTPOINTRO"
		exit 1
	    fi

	    if echo "$LSROUT" | grep -F " $NASTYFILE" | grep "$BLOCKCNT"> /dev/null; then
		:
	    else
		echo NLIST FAIL
		echo "$LSROUT"
		TZ=UTC ls --time-style=+%Y%m%d%H%M%S.%N -lA "$MNTPOINTRO"
		exit 1
	    fi

	    if echo "$LSROUT" | grep -F " $IFILE" | grep "$BLOCKCNT"> /dev/null; then
		:
	    else
		echo ILIST FAIL
		echo "$LSROUT"
		TZ=UTC ls --time-style=+%Y%m%d%H%M%S.%N -l "$MNTPOINTRO"
		exit 1
	    fi

	    if echo "$LSROUT" | grep -F " $LONGNAME" | grep "$BLOCKCNT"> /dev/null; then
		:
	    else
		echo LONG LIST FAIL
		echo "$LSROUT"
		TZ=UTC ls --time-style=+%Y%m%d%H%M%S.%N -l "$MNTPOINTRO"
		exit 1
	    fi

	    if [ x$NOFILETIME != xy ]; then
		filtime=$(TZ=UTC ls --time-style=+%Y%m%d%H%M%S -l -d "$MNTPOINTRO/$OSDIR/$BASEFILE"|awk '{print $6; }')
		if echo "$LSROUT" | grep -F "$filtime $BASEFILE" > /dev/null; then
		    :
		else
		    echo TIME FAIL
		    echo "$LSROUT"
		    TZ=UTC ls --time-style=+%Y%m%d%H%M%S.%N -l "$MNTPOINTRO"
		    exit 1
		fi

		filtime=$(TZ=UTC ls --time-style=+%Y%m%d%H%M%S -l -d "$MNTPOINTRO/$OSDIR/$LONGNAME"|awk '{print $6; }')
		if echo "$LSROUT" | grep -F "$filtime $LONGNAME" > /dev/null; then
		    :
		else
		    echo LONG TIME FAIL
		    echo "$LSROUT"
		    TZ=UTC ls --time-style=+%Y%m%d%H%M%S.%N -l "$MNTPOINTRO"
		    exit 1
		fi
	    fi

	    case x"$fs" in
		x"zfs"*)
		    LSROUT=$(run_grubfstest ls -- -l "($GRUBDEVICE)/grub fs@/////sdir");;
		*)
		    LSROUT=$(run_grubfstest ls -- -l "($GRUBDEVICE)/////sdir");;
	    esac
	    if echo "$LSROUT" | grep -F " 2.img" | grep $BLOCKCNT > /dev/null; then
		:
	    else
		echo SLIST FAIL
		echo "$LSROUT"
		TZ=UTC ls --time-style=+%Y%m%d%H%M%S.%N -l "$MNTPOINTRO/sdir"
		exit 1
	    fi

	    case x"$fs" in
		x"zfs"*)
		    LSROUT=$(run_grubfstest ls -- -l "($GRUBDEVICE)/grub fs@/$PDIR");;
		*)
		    LSROUT=$(run_grubfstest ls -- -l "($GRUBDEVICE)/$PDIR");;
	    esac
	    if echo "$LSROUT" | grep -F " p.img" | grep $BLOCKCNT > /dev/null; then
		:
	    else
		echo PLIST FAIL
		echo "$LSROUT"
		TZ=UTC ls --time-style=+%Y%m%d%H%M%S.%N -l "$MNTPOINTRO/$PDIR"
		exit 1
	    fi

	    LSOUT=`run_grubfstest ls -- -l "($GRUBDEVICE)"`
	    if [ x"$NOFSLABEL" = xy ]; then
		:
	    elif echo "$LSOUT" | grep -F "Label \`$FSLABEL'" > /dev/null; then
		:
	    else
		echo LABEL FAIL
		echo "$LSOUT"
		blkid "${MOUNTDEVICE}"
		exit 1
	    fi

    # Inconsistencies between GRUB and blkid.
	    case x"$fs" in
		x"iso9660" | x"ziso9660" | xrockridge | xjoliet | xrockridge_joliet | x"iso9660_1999" | xrockridge_1999 | xjoliet_1999 | xrockridge_joliet_1999) ;;
		x"zfs"*)
		    for ((i=0;i<NDEVICES;i++)); do
			FSUUID=$(printf "%016x\n" $(blkid -o export "${LODEVICES[i]}" |grep -F UUID=|sed s,UUID=,,g))
			if [ "$FSUUID" != 0000000000000000 ]; then
			    break;
			fi
		    done;;
		*)
		    FSUUID=`blkid -o export "${MOUNTDEVICE}" |grep -F UUID=|sed s,UUID=,,g`
		    ;;
	    esac
	    case x"$fs" in
		x"hfs"*)
		    GRUBUUID="`run_grubfstest xnu_uuid "$GRUBDEVICE"`"
		    if [ x"$GRUBUUID" = x"$FSUUID" ]; then
			:
		    else
			echo UUID FAIL
			echo "$LSOUT"
			echo "$GRUBUUID"
			for ((i=0;i<NDEVICES;i++)); do
			    blkid "${LODEVICES[i]}"
			done
			exit 1
		    fi
		    ;;
        # FS LIMITATION: romfs, cpio, tar, squash4, minix, AFS, old reiserfs and minix2
	# have no UUID.
		    # GRUB LIMITATION: use creation date for squash4, AFFS and SFS?
		    # GRUB LIMITATION: use tags serials on UDF?
		    # GRUB LIMITATION: use root ctime on cpio, tar, minix*, UDF, reiserfs_old?
	            # GRUB LIMITATION: Support Atari UUIDs
		x"romfs" | x"cpio_"* | x"tarfs" | x"squash4_"* | x"minix" \
		    | x"minix2" | x"minix3" | x"affs" | xaffs_intl \
		    | x"udf" | xvfat12a | xvfat16a | xmsdos12a | xmsdos16a | xafs | xsfs* \
		    | xreiserfs_old)
		    ;;
		*)
		    if [ x"$FSUUID" = x ]; then
			echo "Warning: blkid couldn't retrieve UUID"
		    elif echo "$LSOUT" | grep -F 'UUID '"$FSUUID"' ' > /dev/null; then
			:
		    else
			echo UUID FAIL
			echo "$FSUUID"
			echo "$LSOUT"
			blkid "${LODEVICES[0]}"
			exit 1
		    fi
		    ;;
	    esac

	    case x$fs in
		xiso9660 | xziso9660 | xrockridge | xjoliet | xrockridge_joliet | xiso9660_1999 | xrockridge_1999 | xjoliet_1999 | xrockridge_joliet_1999)
		    FSTIME="$(date -d "$(echo ${FSUUID} | awk -F - '{ print $1"-"$2"-"$3" "$4":"$5":"$6 ;}')" '+%Y-%m-%d %H:%M:%S')";;
		*)
		    FSTIME="$(TZ=UTC ls --time-style="+%Y-%m-%d_%H:%M:%S" -l -d "${FSIMAGES[0]}"|awk '{print $6; }'|sed 's,_, ,g')";;
	    esac
		# With some abstractions like mdraid it may take up to 2 seconds for the data to reach the disks after it was flushed by FS in these tests.
	    FSTIMEM1="$(date -d "$FSTIME UTC -1 second" -u "+%Y-%m-%d %H:%M:%S")"
	    FSTIMEM2="$(date -d "$FSTIME UTC -2 second" -u "+%Y-%m-%d %H:%M:%S")"

	    if [ x$NOFSTIME = xy ]; then
		:
	    elif echo "$LSOUT" | grep -F 'Last modification time '"$FSTIME" > /dev/null || echo "$LSOUT" | grep -F 'Last modification time '"$FSTIMEM1" > /dev/null || echo "$LSOUT" | grep -F 'Last modification time '"$FSTIMEM2" > /dev/null; then
		:
	    else
		echo FSTIME FAIL
		echo "$FSTIME"
		echo "$LSOUT"
		exit 1
	    fi

	    if [ x$NOHARDLINK != xy ]; then
		if run_grubfstest cmp "$GRUBDIR/$BASEHARD" "$MNTPOINTRO/$OSDIR/$BASEFILE"  ; then
		    :
		else
		    echo HARDLINK FAIL
		    exit 1
		fi
	    fi

	    if [ x$NOSYMLINK != xy ]; then
		if run_grubfstest cmp "$GRUBDIR/$BASESYM" "$MNTPOINTRO/$OSDIR/$BASEFILE"  ; then
		    :
		else
		    echo SYMLINK FAIL
		    exit 1
		fi
		if run_grubfstest cmp "$GRUBDIR/$LONGSYM" "$MNTPOINTRO/$OSDIR/$LONGNAME"  ; then
		    :
		else
		    echo LONG SYMLINK FAIL
		    exit 1
		fi
		if run_grubfstest cmp "$GRUBDIR/$ISYM" "$MNTPOINTRO/$OSDIR/$IFILE"  ; then
		    :
		else
		    echo INTL SYMLINK FAIL
		    exit 1
		fi
		if run_grubfstest cmp "$GRUBDIR/$SSYM" "$MNTPOINTRO/$OSDIR/////sdir/////2.img"  ; then
		    :
		else
		    echo SDIR SYMLINK FAIL
		    exit 1
		fi
		if run_grubfstest cmp "$GRUBDIR/$USYM" "$MNTPOINTRO/$OSDIR/1.img"  ; then
		    :
		else
		    echo SDIR SYMLINK FAIL
		    exit 1
		fi
		if run_grubfstest cmp "$GRUBDIR/$PSYM" "$MNTPOINTRO/$OSDIR/${PDIR2}/$PFIL"  ; then
		    :
		else
		    echo PATH LONG SYMLINK FAIL
		    exit 1
		fi
	    fi

	    if run_grubfstest cmp "$GRUBDIR/$BASEFILE" "$MNTPOINTRO/$OSDIR/$BASEFILE"  ; then
		:
	    else
		echo READ FAIL
		exit 1
	    fi
	    if run_grubfstest cmp "$GRUBDIR/$NASTYFILE" "$MNTPOINTRO/$OSDIR/$NASTYFILE"  ; then
		:
	    else
		echo NREAD FAIL
		exit 1
	    fi
		# Reference archive contains original name
	    if run_grubfstest cmp "$GRUBDIR/$LONGNAME" "$MNTPOINTRO/$OSDIR/$LONGNAME"  ; then
		:
	    else
		echo LONG NAME READ FAIL
		exit 1
	    fi
	    if run_grubfstest cmp "$GRUBDIR/////sdir/////2.img" "$MNTPOINTRO/$OSDIR/sdir/2.img"  ; then
		:
	    else
		echo LONG NAME READ FAIL
		exit 1
	    fi
	    if run_grubfstest cmp "$GRUBDIR/$IFILE" "$MNTPOINTRO/$OSDIR/$IFILE"  ; then
		:
	    else
		echo IREAD FAIL
		exit 1
	    fi
	    if run_grubfstest cmp "$GRUBDIR/$PDIR/$PFIL" "$MNTPOINTRO/$OSDIR/$PDIR/$PFIL"  ; then
		:
	    else
		echo PREAD FAIL
		echo cmp "$GRUBDIR/$PDIR/$PFIL" "$MNTPOINTRO/$OSDIR/$PDIR/$PFIL"
		exit 1
	    fi
	    ok=true
	    for ((i=0;i<$CFILESN;i++)); do
		if ! run_grubfstest cmp "$GRUBDIR/${CFILES[i]}" "$MNTPOINTRO/$OSDIR/${CFILES[i]}"  ; then
		    ok=false;
		fi
	    done
	    if  test x$ok = xtrue; then
		:
	    else
		echo CREAD FAIL
		exit 1
	    fi

	    if [ x$CASESENS = xy ]; then
		if run_grubfstest cmp "$GRUBDIR/CaSe" "$MNTPOINTRO/$OSDIR/CaSe"  ; then
		    :
		else
		    echo CASE1 READ FAIL
		    exit 1
		fi
		if run_grubfstest cmp "$GRUBDIR/cAsE" "$MNTPOINTRO/$OSDIR/cAsE"  ; then
		    :
		else
		    exit 1
		fi
		if cmp "$MNTPOINTRO/$OSDIR/cAsE" "$MNTPOINTRO/$OSDIR/CaSe" > /dev/null ; then
		    exit 1
		fi
		if  test x$ok = xtrue; then
		    :
		else
		    echo CASE READ FAIL
		    exit 1
		fi
	    else
		# OS LIMITATION: Linux make FAT (partially) case-sensitive...
		# ISO9660 is generated and master doesn't change
		case x$fs in
		    xiso9660 | xvfat*)
			CASEX=CaSe;;
		    *)
			CASEX=cAsE;;
		esac
		if run_grubfstest cmp "$GRUBDIR/CaSe" "$MNTPOINTRO/$OSDIR/${CASEX}"  ; then
		    :
		else
		    echo CASE1 READ FAIL
		    exit 1
		fi
		if run_grubfstest cmp "$GRUBDIR/cAsE" "$MNTPOINTRO/$OSDIR/CaSe"  ; then
		    :
		else
		    echo CASE2 READ FAIL
		    exit 1
		fi
		if ! cmp "$MNTPOINTRO/$OSDIR/CaSe" "$MNTPOINTRO/$OSDIR/${CASEX}" > /dev/null ; then
		    echo CASE CMP READ FAIL
		    exit 1
		fi
		if  test x$ok = xtrue; then
		    :
		else
		    echo CASE READ FAIL
		    exit 1
		fi
	    fi

	    case x"$fs" in
		x"zfs"*)
		    while ! zpool export "$FSLABEL" ; do
			sleep 1;
		    done
		    sleep 5;;
		x"tarfs" | x"cpio_"* | xrockridge | xjoliet | xrockridge_joliet | x"ziso9660" | x"romfs" | x"squash4_"* | xiso9660 | xiso9660_1999 | xrockridge_1999 | xjoliet_1999 | xrockridge_joliet_1999)
		    rm -rf "$MNTPOINTRW";;
		x"afs")
		    rm -rf "$MNTPOINTRO"
		    ;;
		*)
		    sleep 1
		    umount "$MNTPOINTRO"  || true
		    umount "$MNTPOINTRW" || true
	    esac
	    sleep 1
	    case x"$fs" in
		xmdraid*)
		    mdadm --stop /dev/md/"${fs}_$NDEVICES"
		    sleep 1
		    ;;
		xlvm*)
		    vgchange -a n grub_test
		    sleep 1
		    ;;
	    esac
	    for ((i=0; i < NDEVICES; i++)); do
		case x"$fs" in
		    x"tarfs" | x"cpio_"* | x"iso9660" | xrockridge | xjoliet | xrockridge_joliet | x"ziso9660" | x"romfs" | x"squash4_"* | x"iso9660_1999" | xrockridge_1999 | xjoliet_1999 | xrockridge_joliet_1999) ;;
		    *)
			while ! losetup -d "${LODEVICES[i]}"; do
			    sleep 1
			done;;
		esac
		rm "${FSIMAGES[i]}"
	    done
	    if [ x"$fs" = x"zfs" ]; then
		rmdir "$MNTPOINTRW"/"grub fs"  || true
		rmdir "$MNTPOINTRO"/"grub fs"  || true
	    fi
	    rm -rf "$MNTPOINTRW"  || true
	    rm -rf "$MNTPOINTRO"  || true
	done
    done
done