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#!/bin/sh
# Make sure that 'mv file unwritable-file' prompts the user
# and that 'mv -f file unwritable-file' doesn't.
# Copyright (C) 2001-2012 Free Software Foundation, Inc.
# 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/>.
. "${srcdir=.}/init.sh"; path_prepend_ ../src
print_ver_ mv
require_controlling_input_terminal_
skip_if_root_
trap '' TTIN # Ignore SIGTTIN
test "$(uname -s)" = FreeBSD && skip_ "known spurious failure on FreeBSD"
touch f g h i || framework_failure_
chmod 0 g i || framework_failure_
ls /dev/stdin >/dev/null 2>&1 \
|| skip_ 'there is no /dev/stdin file'
# work around a dash bug when redirecting
# from symlinked ttys in the background
tty=$(readlink -f /dev/stdin)
test -r "$tty" 2>&1 \
|| skip_ '/dev/stdin is not readable'
mv f g < $tty > out 2>&1 & pid=$!
# Test for the expected prompt; sleep upon non-match.
check_overwrite_prompt()
{
local delay="$1"
case "$(cat out)" in
"mv: try to overwrite 'g', overriding mode 0000"*) ;;
*) sleep $delay; return 1;;
esac
}
# Wait for up to 12.7 seconds for the expected prompt.
retry_delay_ check_overwrite_prompt .1 7 || fail=1
kill $pid
mv -f h i > out 2>&1 || fail=1
test -f i || fail=1
test -f h && fail=1
# Make sure there was no prompt.
case "$(cat out)" in
'') ;;
*) fail=1 ;;
esac
Exit $fail
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