#!/bin/rc
# 
# Exec2fs Regression
#

echo '== Exec2fs Regression =='

#
# Parameters
#
O=8.
CMD=../$O

#TESTDIR=.test/exec2fs
TESTDIR=/tmp/testbed/exec2fs

EXECLOG=$TESTDIR/exec2fs.log
MPIPELOG=$TESTDIR/mpipefs.log
ERRORLOG=$TESTDIR/error.log

E_MNTPATH=$TESTDIR/E

#M_MNTPATH=$TESTDIR/M
M_MNTPATH=$E_MNTPATH

#
# Cleanup Previous Instances
#
fn cleanup {
	echo Cleaning up previous runs.

	rm -f $E_MNTPATH $M_MNTPATH
	rm -rf $TESTDIR
}

fn shutdown {
	echo Shutting down previous runs.

	# FIXME: should there be multiple mpipes?
	unmount /n/mpipetest > /dev/null >[2] /dev/null
	unmount $E_MNTPATH > /dev/null >[2] /dev/null
	unmount $M_MNTPATH > /dev/null >[2] /dev/null

	rm -f /srv/mpipe
	rm -f /srv/exec2fs
	rm -f /n/mpipetest

	unmount /proc > /dev/null >[2] /dev/null
	bind '#p' /proc
}

#
# Startup mpipefs 
#
fn startup_mpipe {
	echo Starting mpipefs....

	if(~ $#* 0) {
		$CMD^mpipefs >[2] $MPIPELOG # $M_MNTPATH
	}
	if not {
		$CMD^mpipefs -v $1 >[2] $MPIPELOG # CHATTY
	}
}

#
# Startup exec2fs 
#
fn startup_exec2fs {
	echo Starting exec2fs.
	if(~ $#* 0) {
		$CMD^exec2fs -s exec2fs -E $CMD^execcmd -m $E_MNTPATH -L $TESTDIR -Z $M_MNTPATH >[2] $EXECLOG 
	}
	if not {
		$CMD^exec2fs -v $1 -s exec2fs -E $CMD^execcmd -m $E_MNTPATH -L $TESTDIR -Z $M_MNTPATH >[2] $EXECLOG  	# CHATTY
	}
}

fn startup {
	startup_exec2fs $1
	startup_mpipe $1

	bind -bc .  /$objtype/bin
	bind -bc .. /$objtype/bin
}


# Setup a test directory
#
fn testdir {
	mkdir -p $TESTDIR
	mkdir -p $E_MNTPATH $M_MNTPATH 
}

fn myexecstdin {
	mypid=`{cat} #`

	echo -n exec /bin/cat >>[2] exec2fs.log >>[2] $ERRORLOG
	cat $TESTDIR/test > $M_MNTPATH/$mypid/stdin >>[2] $ERRORLOG
	cat $M_MNTPATH/$mypid/stdout > $TESTDIR/test1 >>[2] $ERRORLOG
}

fn myexecstdout {
	mypid=`{cat} #`

	echo -n exec /bin/cat $TESTDIR/test >>[2] $ERRORLOG
	cat $M_MNTPATH/$mypid/stdout > $TESTDIR/test1 >>[2] $ERRORLOG
}

fn stdout {
	echo -n Stdout Test....

	# initialize files
	echo Hello Squidboy > $TESTDIR/test
	echo > $TESTDIR/test1

	# execute test
	myexecstdout <>$E_MNTPATH/clone >[1=0]

	# verify results
	if(! cmp -s $TESTDIR/test $TESTDIR/test1) {
		echo FAILED!
		exit 'stdout: test failed'
	}

	echo Success!
}

fn stdin {
	echo -n Stdin Test....

	# initialize files
	echo Hello Squidboy > $TESTDIR/test
	echo > $TESTDIR/test1

	# execute test
	myexecstdin <>$E_MNTPATH/clone >[1=0]

	# verify results
	if(! cmp -s $TESTDIR/test $TESTDIR/test1) {
		echo FAILED!
		exit 'stdout: test failed'
	}

	echo Success!
}

# Setup
rfork

cleanup
shutdown

testdir

startup $1

# Tests -- do it several times to verify that it does not die as before
stdin
stdout

stdin
stdout

stdin
stdout

stdin
stdout

shutdown

#cleanup