tests/redir.tests

#   This program is free software: you can redistribute it and/or modify
#   it under the terms of the GNU General Public License as published by
#   the Free Software Foundation, either version 3 of the License, or
#   (at your option) any later version.
#
#   This program is distributed in the hope that it will be useful,
#   but WITHOUT ANY WARRANTY; without even the implied warranty of
#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#   GNU General Public License for more details.
#
#   You should have received a copy of the GNU General Public License
#   along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
: ${TMPDIR:=/tmp}

export LC_ALL=C
export LANG=C

# catch-all for remaining untested redirection stuff
set +o posix

echo abc > /tmp/redir-test
cat /tmp/redir-test

set -o noclobber

#this should be an error
echo def > /tmp/redir-test
cat /tmp/redir-test

# but this should succeed
echo def > /tmp/redir-test-2
cat /tmp/redir-test-2

# and so should this
echo def >| /tmp/redir-test
cat /tmp/redir-test

set +o noclobber
rm /tmp/redir-test /tmp/redir-test-2

# this should be an error
z="a b"
cat < $z

echo "Point 1"

exec 3</etc/passwd
exec 4>$TMPDIR/bash-a
exec 5>$TMPDIR/bash-b
echo "Point 2"

echo to a 1>&4
echo to b 1>&5
cat $TMPDIR/bash-a
cat $TMPDIR/bash-b
exec 11</dev/null
echo "Point 3"

echo to a 1>&4
echo to b 1>&5
cat $TMPDIR/bash-a
cat $TMPDIR/bash-b

exec 11<&-
echo "Point 4"

exec 6<>$TMPDIR/bash-c
echo to c 1>&6
cat $TMPDIR/bash-c
echo "Point 5"

# clean up before running scripts
exec 4>&- 5>&- 6<&-

rm -f $TMPDIR/bash-a $TMPDIR/bash-b $TMPDIR/bash-c

#
# Test the effect of input buffering on the shell's input
#
${THIS_SH} < redir1.sub

# more open, close, duplicate file descriptors
${THIS_SH} ./redir3.sub < ./redir3.in1

# still more redirections
${THIS_SH} ./redir4.sub < redir4.in1

# various forms of null redirection
testf()
{
	if [ -f "$1" ]; then
		rm -f "$1"
	else
		echo oops -- $1 not found
	fi
}

> $TMPDIR/null-redir-a
testf $TMPDIR/null-redir-a

$EXIT > $TMPDIR/null-redir-b
testf $TMPDIR/null-redir-b

( > $TMPDIR/null-redir-c )
testf $TMPDIR/null-redir-c

$EXIT > $TMPDIR/null-redir-d &
wait
testf $TMPDIR/null-redir-d

exit 3 | $EXIT > $TMPDIR/null-redir-e
echo $? -- ${PIPESTATUS[@]}
testf $TMPDIR/null-redir-e

exit 4 | > $TMPDIR/null-redir-f
echo $? -- ${PIPESTATUS[@]}
testf $TMPDIR/null-redir-f

> $TMPDIR/null-redir-g &
wait
testf $TMPDIR/null-redir-g

exec >$TMPDIR/null-redir-h &
wait
testf $TMPDIR/null-redir-h

# make sure async commands don't get /dev/null as stdin when an explicit
# input redirection is supplied
for x in 1 2 3; do
	{ read line ; echo $line ; } &
	wait
	{ read line ; echo $line ; } &
	wait
done << EOF
ab
cd
ef
gh
ij
kl
EOF

# make sure async commands get /dev/null as stdin in the absence of any
# input redirection
/bin/cat &
wait
echo $?

# make sure that loops work OK with here documents and are not run in
# subshells
while read line; do
	echo $line
	l2=$line
done << EOF
ab
cd
EOF
echo $l2

# These should not echo anything -- bug in versions before 2.04
( ( echo hello 1>&3 ) 3>&1 ) >/dev/null 2>&1

( ( echo hello 1>&3 ) 3>&1 ) >/dev/null 2>&1 | cat

# in posix mode, non-interactive shells are not allowed to perform
# filename expansion on input redirections, even if they expand to
# a single filename
set -o posix
cat < redir1.*

# test ksh93 dup-and-close (move fd) redirections
${THIS_SH} ./redir5.sub

# test behavior after a write error with a builtin command
${THIS_SH} ./redir6.sub

# problem with redirections using fds bash uses internally
: ${TMPDIR:=$TMPDIR}

trap 'rm -f $TMPDIR/bash-redir-$$' 0 1 2 3 6 15

echo before block
{
	echo before redir
	exec 10>&1
	echo after redir
} > $TMPDIR/bash-redir-$$

echo after block

${THIS_SH} ./redir7.sub

${THIS_SH} ./redir8.sub

exec 9>&2
command exec 2>$TMPDIR/foo-$$
echo whatsis >&2
echo cat /tmp/foo
cat $TMPDIR/foo-$$
rm -f $TMPDIR/foo-$$
exec 2>&9
exec 9>&-

${THIS_SH} ./redir9.sub

${THIS_SH} ./redir10.sub

${THIS_SH} ./redir11.sub