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Add some more tests for the attr2 test.
Do some EA and extent interaction at different formats due to different
number of extents and EAs.
It showed up the current attr2 bug.
With the proposed patch this doesn't happen.
Merge of master-melb:xfs-cmds:27606a by kenmcd.

  Add some more tests for the attr2 test.
  Do some EA and extent interaction at different formats due to different
  number of extents and EAs.
  It showed up the current attr2 bug.
  With the proposed patch this doesn't happen.

#! /bin/sh
# FS QA Test No. 135
#
# Test the attr2 code
# Let's look, xfs_db, at the inode and its literal area for the
# extents and the attributes 
#
#-----------------------------------------------------------------------
# Copyright (c) 2000-2005 Silicon Graphics, Inc.  All Rights Reserved.
#-----------------------------------------------------------------------
#
# creator
owner=tes@puffy.melbourne.sgi.com

seq=`basename $0`
echo "QA output created by $seq"

here=`pwd`
tmp=/tmp/$$
status=1	# failure is the default!
trap "_cleanup; exit \$status" 0 1 2 3 15

_cleanup()
{
    cd /
    rm -f $tmp.*
}

# get standard environment, filters and checks
. ./common.rc
. ./common.filter

# real QA test starts here

#_notrun "Need to fix up filtering before checkin" 

# Modify as appropriate.
_supported_fs xfs
_supported_os IRIX Linux
_require_scratch

export MKFS_OPTIONS="-i size=512,attr=2"
_scratch_mkfs_xfs
_scratch_mount

file=$SCRATCH_MNT/file
touch $file
inum=`ls -i $file | awk '{print $1}'`
echo "inum=$inum"

_filter()
{
    sed -e "s#$tmp#TMP#g"
}

add_eas()
{
    start=$1
    end=$2
    echo ""; echo "** add $start..$end EAs **"
    i=$start
    while [ $i -le $end ]; do 
	attr -s name.$i -V value $file >/dev/null
	i=`expr $i + 1`
    done
}

rm_eas()
{
    start=$1
    end=$2
    echo ""; echo "** rm $start..$end EAs **"
    i=$start
    while [ $i -le $end ]; do 
	attr -r name.$i $file >/dev/null
	i=`expr $i + 1`
    done
}

do_extents()
{
    num=$1
    echo ""; echo "** $num extents **"
    src/makeextents -v -p -w -n $num $file
}

_print_inode()
{
    umount $SCRATCH_MNT
    xfs_db -r -c "inode $inum" -c "print" $SCRATCH_DEV |\
    awk '
	/nextents/ { print; next }
	/naextents/ { print; next }
	/u\./ { print; next }
	/a\./ { print; next }
	/forkoff/ { printf("core.forkoff = %d (%d bytes)\n", $3, $3*8); next }
	/format/ { print; next }
	/size/ { print; next }
    '
    _scratch_mount
}

_print_inode_u()
{
    umount $SCRATCH_MNT
    xfs_db -r -c "inode $inum" -c "print u" $SCRATCH_DEV
    _scratch_mount
}

_print_inode_a()
{
    umount $SCRATCH_MNT
    xfs_db -r -c "inode $inum" -c "print a" $SCRATCH_DEV
    _scratch_mount
}


_test_add_eas()
{
	_print_inode

	add_eas 1 1
	_print_inode

	add_eas 2 2
	_print_inode

	add_eas 3 4
	_print_inode

	add_eas 5 8
	_print_inode

	add_eas 9 16
	_print_inode

	add_eas 17 20
	_print_inode

	add_eas 21 21
	_print_inode

	add_eas 22 22
	_print_inode

	add_eas 23 23
	_print_inode

	add_eas 24 24
	_print_inode

	add_eas 25 25
	_print_inode

	add_eas 26 30
	_print_inode

	add_eas 31 35
	_print_inode

	rm_eas 1 34
	_print_inode
}

_test_add_extents()
{
	# now do the extents

	#build up
	j=1
	while [ $j -le 30 ]; do
	    do_extents $j
	    _print_inode
	    j=`expr $j + 2`
	done

	#scale down
	j=30
	while [ $j -ge 1 ]; do
	    do_extents $j
	    _print_inode
	    j=`expr $j - 2`
	done

	#build up
	j=1
	while [ $j -le 30 ]; do
	    do_extents $j
	    _print_inode
	    j=`expr $j + 2`
	done
}

#
# Using a nested loop,
# for various number of data extents,
# try adding EAs and then removing EAs
# Check that when we play with the EAs that we don't mess with the extents
#
_test_extents_eas()
{
	# now do the EAs with the extents

	extents_max=400
	extents_inc=10
	EAs_max=100
	EAs_inc=5
	for i in `seq 1 $extents_inc $extents_max`; do
	    do_extents $i
	    echo "--- extents: $i ---"
	    _print_inode
	    _print_inode_u > $tmp.u1
	    for j in `seq 1 $EAs_inc $EAs_max`; do
		k=`expr $j + $EAs_inc - 1`
		add_eas $j $k
	    done
	    # should have same extents
	    _print_inode
	    _print_inode_u > $tmp.u2
            rm_eas 1 $EAs_max
	    _print_inode_u > $tmp.u3

	    echo ""
	    echo "*** Extent differences before and after EAs added ***"
	    diff -s $tmp.u1 $tmp.u2 | _filter
	    echo ""
	    if ! diff $tmp.u1 $tmp.u2 >/dev/null; then 
		echo "Data extents magically changed"
		exit
	    fi

	    echo ""
	    echo "*** Extent differences before and after EAs removed ***"
	    diff -s $tmp.u2 $tmp.u3 | _filter
	    echo ""
	    if ! diff $tmp.u2 $tmp.u3 >/dev/null; then 
		echo "Data extents magically changed"
		exit
	    fi
	done
}

#
# The counterpart of _test_extents_eas
# with the nested loops reversed.
# For various number of EAs, try adding extents
# Check that when we play with the data extents that we don't mess with the EAs
#
_test_eas_extents()
{
	# now do the EAs with the extents

	extents_max=400
	extents_inc=10
	EAs_max=100
	EAs_inc=5
	for j in `seq 1 $EAs_inc $EAs_max`; do

	    k=`expr $j + $EAs_inc - 1`
	    add_eas $j $k
	    echo "--- EAs: $j ---"

	    _print_inode
	    _print_inode_a > $tmp.a1
	    for i in `seq 1 $extents_inc $extents_max`; do
		do_extents $i
	    done

	    # should have same EAs
	    _print_inode
	    _print_inode_a > $tmp.a2
	    >$file 
	    _print_inode_a > $tmp.a3

	    echo ""
	    echo "*** EA differences before and after extents added ***"
	    diff -s $tmp.a1 $tmp.a2 | _filter
	    echo ""
	    if ! diff $tmp.a1 $tmp.a2 >/dev/null; then 
		echo "EAs magically changed"
		exit
	    fi

	    echo ""
	    echo "*** EA differences before and after extents removed ***"
	    diff -s $tmp.a2 $tmp.a3 | _filter
	    echo ""
	    if ! diff $tmp.a2 $tmp.a3 >/dev/null; then 
		echo "EAs magically changed"
		exit
	    fi
	done
}

#
# test to see how we go 

#
# test to ensure it fits a max sf EA
#
# literal part of inode starts at offset 100 (decimal)
# for 512 bytes inode that gives 412 bytes of literal area
#
# min btree root (numrecs=3) => 3 * 16 + (4 or 8)
# for 8 byte alignment => 56 bytes
# => 512 - 156 = 356 bytes 
#
# SF EA of form
#   totsize: 2 bytes
#   count:   1 byte
#   nlen:    1 byte
#   vlen:    1 byte
#   flags:   1 byte
#   name:    nlen
#   value:   vlen
#
# => 6+nlen+vlen
#
# for nlen=4 "name"
# vlen = 356 - (6+4) = 346
# 
#
_test_initial_sf_ea()
{
	rm $file
	touch $file
	vlen=402
	vlen=300
	dd if=/dev/zero bs=1 count=$vlen | attr -s name $file
	_print_inode
}

# main

_test_add_eas
_test_add_extents
_test_extents_eas
_test_eas_extents
#_test_initial_sf_ea

# do a test with a variety of sized EAs

# success, all done
status=0
exit