tests/dd/misc.sh

   1 #!/bin/sh
   2 # Ensure dd treats '--' properly.
   3 # Also test some flag values.
   4
   5 # Copyright (C) 1999-2024 Free Software Foundation, Inc.
   6
   7 # This program is free software: you can redistribute it and/or modify
   8 # it under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation, either version 3 of the License, or
  10 # (at your option) any later version.
  11
  12 # This program is distributed in the hope that it will be useful,
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 # GNU General Public License for more details.
  16
  17 # You should have received a copy of the GNU General Public License
  18 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
  19
  20 . "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
  21 print_ver_ dd
  22 export LC_ALL=C
  23
  24 tmp_in=dd-in
  25 tmp_in2=dd-in2
  26 tmp_sym=dd-sym
  27 tmp_out=dd-out
  28
  29 warn=0
  30 echo data > $tmp_in || framework_failure_
  31 ln $tmp_in $tmp_in2 || framework_failure_
  32 ln -s $tmp_in $tmp_sym || framework_failure_
  33
  34 # check status=none suppresses all output to stderr
  35 dd status=none if=$tmp_in of=/dev/null 2> err || fail=1
  36 compare /dev/null err || fail=1
  37 dd status=none if=$tmp_in skip=2 of=/dev/null 2> err || fail=1
  38 compare /dev/null err || fail=1
  39 # check later status=none overrides earlier status=noxfer
  40 dd status=noxfer status=none if=$tmp_in of=/dev/null 2> err || fail=1
  41 compare /dev/null err || fail=1
  42 # check later status=noxfer overrides earlier status=none
  43 dd status=none status=noxfer if=$tmp_in of=/dev/null 2> err || fail=1
  44 compare /dev/null err && fail=1
  45
  46 dd if=$tmp_in of=$tmp_out 2> /dev/null || fail=1
  47 compare $tmp_in $tmp_out || fail=1
  48
  49 rm $tmp_out
  50 dd -- if=$tmp_in of=$tmp_out 2> /dev/null || fail=1
  51 compare $tmp_in $tmp_out || fail=1
  52
  53 if dd oflag=append if=$tmp_in of=$tmp_out 2> /dev/null; then
  54   compare $tmp_in $tmp_out || fail=1
  55 fi
  56
  57 case $(cat /dev/stdin <$tmp_in 2>/dev/null) in
  58 (data)
  59   rm -f $tmp_out
  60   dd if=/dev/stdin of=$tmp_out <$tmp_in || fail=1
  61   compare $tmp_in $tmp_out || fail=1
  62 esac
  63
  64 if dd iflag=nofollow if=$tmp_in count=0 2> /dev/null; then
  65   returns_ 1 dd iflag=nofollow if=$tmp_sym count=0 2> /dev/null || fail=1
  66 fi
  67
  68 if dd iflag=directory if=. count=0 2> /dev/null; then
  69   dd iflag=directory count=0 <. 2> /dev/null || fail=1
  70   returns_ 1 dd iflag=directory count=0 <$tmp_in 2> /dev/null || fail=1
  71 fi
  72
  73 old_ls=$(ls -u --full-time $tmp_in)
  74 sleep 1
  75 if dd iflag=noatime if=$tmp_in of=$tmp_out 2> /dev/null; then
  76   new_ls=$(ls -u --full-time $tmp_in)
  77   if test "x$old_ls" != "x$new_ls"; then
  78     cat >&2 <<EOF
  79 =================================================================
  80 $0: WARNING!!!
  81 This operating system has the O_NOATIME file status flag,
  82 but it is silently ignored in some cases.
  83 Therefore, dd options like iflag=noatime may be silently ignored.
  84 =================================================================
  85 EOF
  86     warn=77
  87   fi
  88 fi
  89
  90 if dd oflag=nolinks if=$tmp_in of=$tmp_out 2> /dev/null; then
  91   returns_ 1 dd iflag=nolinks if=$tmp_in > /dev/null 2>&1 || fail=1
  92   returns_ 1 dd iflag=nolinks < $tmp_in > /dev/null 2>&1 || fail=1
  93   dd oflag=nolinks < $tmp_in > $tmp_out 2>&1 || fail=1
  94 fi
  95
  96 outbytes=$(echo x | dd bs=3 ibs=10 obs=10 conv=sync 2>/dev/null | wc -c)
  97 test "$outbytes" -eq 3 || fail=1
  98
  99 # A delay is required to trigger a failure.
 100 # There might be some missed failures but it's unlikely.
 101 (echo a; sleep .1; echo b) \
 102   | dd bs=4 status=noxfer iflag=fullblock >out 2>err || fail=1
 103 printf 'a\nb\n' > out_ok || framework_failure_
 104 echo "1+0 records in
 105 1+0 records out" > err_ok || framework_failure_
 106 compare out_ok out || fail=1
 107 compare err_ok err || fail=1
 108
 109 test $fail -eq 0 && fail=$warn
 110
 111 # Check a warning is issued for ambiguous 0x... numbers
 112 dd if=/dev/null count=0x1 seek=0x1 skip=0x1 status=none 2>err || fail=1
 113 cat <<\EOF >exp
 114 dd: warning: '0x' is a zero multiplier; use '00x' if that is intended
 115 dd: warning: '0x' is a zero multiplier; use '00x' if that is intended
 116 dd: warning: '0x' is a zero multiplier; use '00x' if that is intended
 117 EOF
 118 compare exp err || fail=1
 119
 120 echo "0+0 records in
 121 0+0 records out" >err_ok || framework_failure_
 122 big=9999999999999999999999999999999999999999999999999999999999999
 123 dd if=$tmp_in of=$tmp_out count=00x$big status=noxfer 2>err || fail=1
 124 compare /dev/null $tmp_out || fail=1
 125 compare err_ok err || fail=1
 126
 127 Exit $fail