tests/dd/direct.sh

   1 #!/bin/sh
   2 # ensure that dd's iflag=direct and oflag=direct work
   3
   4 # Copyright (C) 2009-2024 Free Software Foundation, Inc.
   5
   6 # This program is free software: you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation, either version 3 of the License, or
   9 # (at your option) any later version.
  10
  11 # This program is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU General Public License for more details.
  15
  16 # You should have received a copy of the GNU General Public License
  17 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
  18
  19 . "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
  20 print_ver_ dd
  21
  22 truncate -s 8192 in || framework_failure_
  23 dd if=in oflag=direct of=out 2> /dev/null \
  24   || skip_ '512 byte aligned O_DIRECT is not supported on this (file) system'
  25
  26 truncate -s 511 short || framework_failure_
  27 truncate -s 8191 m1 || framework_failure_
  28 truncate -s 8193 p1 || framework_failure_
  29
  30 for i in short m1 p1; do
  31   rm -f out
  32   dd if=$i iflag=direct oflag=direct of=out || fail=1
  33 done
  34
  35 Exit $fail