tests/dd/misc.sh

   1 #!/bin/sh
   2 # Ensure dd treats '--' properly.
   3 # Also test some flag values.
   4
   5 # Copyright (C) 1999-2016 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 <http://www.gnu.org/licenses/>.
  19
  20 . "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
  21 print_ver_ dd
  22
  23 tmp_in=dd-in
  24 tmp_in2=dd-in2
  25 tmp_sym=dd-sym
  26 tmp_out=dd-out
  27
  28 warn=0
  29 echo data > $tmp_in || framework_failure_
  30 ln $tmp_in $tmp_in2 || framework_failure_
  31 ln -s $tmp_in $tmp_sym || framework_failure_
  32
  33 # check status=none suppresses all output to stderr
  34 dd status=none if=$tmp_in of=/dev/null 2> err || fail=1
  35 compare /dev/null err || fail=1
  36 dd status=none if=$tmp_in skip=2 of=/dev/null 2> err || fail=1
  37 compare /dev/null err || fail=1
  38 # check later status=none overrides earlier status=noxfer
  39 dd status=noxfer status=none if=$tmp_in of=/dev/null 2> err || fail=1
  40 compare /dev/null err || fail=1
  41 # check later status=noxfer overrides earlier status=none
  42 dd status=none status=noxfer if=$tmp_in of=/dev/null 2> err || fail=1
  43 compare /dev/null err && fail=1
  44
  45 dd if=$tmp_in of=$tmp_out 2> /dev/null || fail=1
  46 compare $tmp_in $tmp_out || fail=1
  47
  48 rm $tmp_out
  49 dd -- if=$tmp_in of=$tmp_out 2> /dev/null || fail=1
  50 compare $tmp_in $tmp_out || fail=1
  51
  52 if dd oflag=append if=$tmp_in of=$tmp_out 2> /dev/null; then
  53   compare $tmp_in $tmp_out || fail=1
  54 fi
  55
  56 case $(cat /dev/stdin <$tmp_in 2>/dev/null) in
  57 (data)
  58   rm -f $tmp_out
  59   dd if=/dev/stdin of=$tmp_out <$tmp_in || fail=1
  60   compare $tmp_in $tmp_out || fail=1
  61 esac
  62
  63 if dd iflag=nofollow if=$tmp_in count=0 2> /dev/null; then
  64   returns_ 1 dd iflag=nofollow if=$tmp_sym count=0 2> /dev/null || fail=1
  65 fi
  66
  67 if dd iflag=directory if=. count=0 2> /dev/null; then
  68   dd iflag=directory count=0 <. 2> /dev/null || fail=1
  69   returns_ 1 dd iflag=directory count=0 <$tmp_in 2> /dev/null || fail=1
  70 fi
  71
  72 old_ls=$(ls -u --full-time $tmp_in)
  73 sleep 1
  74 if dd iflag=noatime if=$tmp_in of=$tmp_out 2> /dev/null; then
  75   new_ls=$(ls -u --full-time $tmp_in)
  76   if test "x$old_ls" != "x$new_ls"; then
  77     cat >&2 <<EOF
  78 =================================================================
  79 $0: WARNING!!!
  80 This operating system has the O_NOATIME file status flag,
  81 but it is silently ignored in some cases.
  82 Therefore, dd options like iflag=noatime may be silently ignored.
  83 =================================================================
  84 EOF
  85     warn=77
  86   fi
  87 fi
  88
  89 if dd oflag=nolinks if=$tmp_in of=$tmp_out 2> /dev/null; then
  90   returns_ 1 dd iflag=nolinks if=$tmp_in > /dev/null 2>&1 || fail=1
  91   returns_ 1 dd iflag=nolinks < $tmp_in > /dev/null 2>&1 || fail=1
  92   dd oflag=nolinks < $tmp_in > $tmp_out 2>&1 || fail=1
  93 fi
  94
  95 outbytes=$(echo x | dd bs=3 ibs=10 obs=10 conv=sync 2>/dev/null | wc -c)
  96 test "$outbytes" -eq 3 || fail=1
  97
  98 # A delay is required to trigger a failure.
  99 # There might be some missed failures but it's unlikely.
 100 (echo a; sleep .1; echo b) \
 101   | env LC_ALL=C dd bs=4 status=noxfer iflag=fullblock >out 2>err || fail=1
 102 printf 'a\nb\n' > out_ok || framework_failure_
 103 echo "1+0 records in
 104 1+0 records out" > err_ok || framework_failure_
 105 compare out_ok out || fail=1
 106 compare err_ok err || fail=1
 107
 108 test $fail -eq 0 && fail=$warn
 109
 110 Exit $fail