mirror of
git://git.sv.gnu.org/coreutils.git
synced 2026-03-05 20:43:51 +02:00
4e73fea3e3
* doc/coreutils.texi (dd invocation): Warn that noatime might not be reliable. * src/dd.c (flags, usage): Look at O_NOATIME, not HAVE_WORKING_O_NOATIME, to decide whether to support the noatime flag, so that dd attempts O_NOATIME even if the build file system does not support it. Problem reported by Jim Meyering today in bug-coreutils. * tests/dd/misc: Generate a warning, not a failure, if noatime exists but fails.
93 lines
2.7 KiB
Bash
Executable File
93 lines
2.7 KiB
Bash
Executable File
#!/bin/sh
|
|
# Ensure dd treats `--' properly.
|
|
# Also test some flag values.
|
|
|
|
# Copyright (C) 1999, 2004, 2005, 2006 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 2 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, write to the Free Software
|
|
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
|
|
# 02110-1301, USA.
|
|
|
|
tmp_in=dd-in.$$
|
|
tmp_in2=dd-in2.$$
|
|
tmp_sym=dd-sym.$$
|
|
tmp_out=dd-out.$$
|
|
|
|
if test "$VERBOSE" = yes; then
|
|
set -x
|
|
dd --version
|
|
fi
|
|
|
|
fail=0
|
|
warn=0
|
|
test_failure=0
|
|
echo data > $tmp_in || test_failure=1
|
|
ln $tmp_in $tmp_in2 || test_failure=1
|
|
ln -s $tmp_in $tmp_sym || test_failure=1
|
|
if test $test_failure = 1; then
|
|
echo 'failure in testing framework'
|
|
exit 1
|
|
fi
|
|
|
|
dd if=$tmp_in of=$tmp_out 2> /dev/null || fail=1
|
|
cmp $tmp_in $tmp_out || fail=1
|
|
|
|
rm $tmp_out
|
|
dd -- if=$tmp_in of=$tmp_out 2> /dev/null || fail=1
|
|
cmp $tmp_in $tmp_out || fail=1
|
|
|
|
if dd oflag=append if=$tmp_in of=$tmp_out 2> /dev/null; then
|
|
cmp $tmp_in $tmp_out || fail=1
|
|
fi
|
|
|
|
if dd iflag=nofollow if=$tmp_in count=0 2> /dev/null; then
|
|
dd iflag=nofollow if=$tmp_sym count=0 2> /dev/null && fail=1
|
|
fi
|
|
|
|
if dd iflag=directory if=. count=0 2> /dev/null; then
|
|
dd iflag=directory count=0 <. 2> /dev/null || fail=1
|
|
dd iflag=directory count=0 <$tmp_in 2> /dev/null && fail=1
|
|
fi
|
|
|
|
old_ls=`ls -u --full-time $tmp_in`
|
|
sleep 1
|
|
if dd iflag=noatime if=$tmp_in of=$tmp_out 2> /dev/null; then
|
|
new_ls=`ls -u --full-time $tmp_in`
|
|
if test "x$old_ls" != "x$new_ls"; then
|
|
cat >&2 <<EOF
|
|
=================================================================
|
|
$0: WARNING!!!
|
|
This operating system has the O_NOATIME file status flag,
|
|
but it is silently ignored in some cases.
|
|
Therefore, dd options like iflag=noatime may be silently ignored.
|
|
=================================================================
|
|
EOF
|
|
warn=77
|
|
fi
|
|
fi
|
|
|
|
if dd oflag=nolinks if=$tmp_in of=$tmp_out 2> /dev/null; then
|
|
dd iflag=nolinks if=$tmp_in > /dev/null 2>&1 && fail=1
|
|
dd iflag=nolinks < $tmp_in > /dev/null 2>&1 && fail=1
|
|
dd oflag=nolinks < $tmp_in > $tmp_out 2>&1 || fail=1
|
|
fi
|
|
|
|
outbytes=`echo x | dd bs=3 ibs=10 obs=10 conv=sync 2>/dev/null | wc -c`
|
|
test "$outbytes" -eq 3 || fail=1
|
|
|
|
rm -f $tmp_in $tmp_in2 $tmp_sym $tmp_out || fail=1
|
|
|
|
test $fail -eq 0 && fail=$warn
|
|
exit $fail
|