path: root/tests/dd/misc.sh

#!/bin/sh# Ensure dd treats '--' properly.# Also test some flag values.# Copyright (C) 1999-2025 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 <https://www.gnu.org/licenses/>. . "${srcdir=.}/tests/init.sh"; path_prepend_ ./src print_ver_ ddexport LC_ALL=C tmp_in=dd-in tmp_in2=dd-in2 tmp_sym=dd-sym tmp_out=dd-out warn=0echo data >$tmp_in || framework_failure_ ln$tmp_in $tmp_in2 || framework_failure_ ln-s$tmp_in $tmp_sym || framework_failure_ # check status=none suppresses all output to stderrdd status=none if=$tmp_in of=/dev/null 2> err || fail=1 compare /dev/null err || fail=1dd status=none if=$tmp_in skip=2 of=/dev/null 2> err || fail=1 compare /dev/null err || fail=1# check later status=none overrides earlier status=noxferdd status=noxfer status=none if=$tmp_in of=/dev/null 2> err || fail=1 compare /dev/null err || fail=1# check later status=noxfer overrides earlier status=nonedd status=none status=noxfer if=$tmp_in of=/dev/null 2> err || fail=1 compare /dev/null err && fail=1ddif=$tmp_in of=$tmp_out2> /dev/null || fail=1 compare $tmp_in $tmp_out || fail=1rm$tmp_outdd--if=$tmp_in of=$tmp_out2> /dev/null || fail=1 compare $tmp_in $tmp_out || fail=1ifdd oflag=append if=$tmp_in of=$tmp_out2> /dev/null;then compare $tmp_in $tmp_out || fail=1ficase $(cat/dev/stdin <$tmp_in2>/dev/null)in(data)rm-f$tmp_outddif=/dev/stdin of=$tmp_out<$tmp_in || fail=1 compare $tmp_in $tmp_out || fail=1esacifdd iflag=nofollow if=$tmp_in count=0 2> /dev/null;then returns_ 1dd iflag=nofollow if=$tmp_sym count=0 2> /dev/null || fail=1fiifdd iflag=directory if=. count=0 2> /dev/null;thendd iflag=directory count=0<. 2> /dev/null || fail=1 returns_ 1dd iflag=directory count=0<$tmp_in2> /dev/null || fail=1fi old_ls=$(ls-u --full-time$tmp_in)sleep1ifdd iflag=noatime if=$tmp_in of=$tmp_out2> /dev/null;then new_ls=$(ls-u --full-time$tmp_in)iftest"x$old_ls"!="x$new_ls";thencat>&2<<EOF=================================================================$0: WARNING!!!This operating system has the O_NOATIME file status flag,but it is silently ignored in some cases.Therefore, dd options like iflag=noatime may be silently ignored.=================================================================EOF warn=77fifiifdd oflag=nolinks if=$tmp_in of=$tmp_out2> /dev/null;then returns_ 1dd iflag=nolinks if=$tmp_in> /dev/null 2>&1 || fail=1 returns_ 1dd iflag=nolinks <$tmp_in> /dev/null 2>&1 || fail=1dd oflag=nolinks <$tmp_in>$tmp_out2>&1 || fail=1fi outbytes=$(echo x | dd bs=3 ibs=10 obs=10 conv=sync 2>/dev/null | wc-c)test"$outbytes"-eq3 || fail=1# A delay is required to trigger a failure.# There might be some missed failures but it's unlikely.(echo a;sleep.1;echo b) \ | dd bs=4 status=noxfer iflag=fullblock >out 2>err || fail=1printf'a\nb\n'> out_ok || framework_failure_ echo"1+0 records in1+0 records out"> err_ok || framework_failure_ compare out_ok out || fail=1 compare err_ok err || fail=1test$fail-eq0&& fail=$warn# Check a warning is issued for ambiguous 0x... numbersddif=/dev/null count=0x1 seek=0x1 skip=0x1 status=none 2>err || fail=1cat<<\EOF >exp dd: warning:'0x' is a zero multiplier; use '00x'if that is intended dd: warning:'0x' is a zero multiplier; use '00x'if that is intended dd: warning:'0x' is a zero multiplier; use '00x'if that is intended EOF compare exp err || fail=1echo"0+0 records in0+0 records out">err_ok || framework_failure_ big=9999999999999999999999999999999999999999999999999999999999999ddif=$tmp_in of=$tmp_out count=00x$big status=noxfer 2>err || fail=1 compare /dev/null $tmp_out || fail=1 compare err_ok err || fail=1 Exit $fail