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5929322ccb
dd oflag=direct would fail to copy a file with size that is not a multiple of 512 (destination file system specific) * NEWS (Bug fixes): Mention it. * src/dd.c (iwrite): Turn off O_DIRECT for any smaller-than-obs-sized write. Don't bother to restore it. * tests/dd/direct: New test for the above. * tests/Makefile.am (TESTS): Add dd/direct. * doc/coreutils.texi (dd invocation): Mention oflag=direct buffer size restriction. Details in http://thread.gmane.org/gmane.comp.gnu.coreutils.bugs/17586 Reported by Eric Sandeen.
41 lines
1.2 KiB
Bash
Executable File
41 lines
1.2 KiB
Bash
Executable File
#!/bin/sh
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# ensure that dd's oflag=direct works
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# Copyright (C) 2009 Free Software Foundation, Inc.
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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if test "$VERBOSE" = yes; then
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set -x
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dd --version
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fi
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. $srcdir/test-lib.sh
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truncate -s 8192 in || framework_failure
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dd if=in oflag=direct of=out 2> /dev/null \
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|| skip_test_ 'this file system lacks support for O_DIRECT'
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truncate -s 511 short || framework_failure
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truncate -s 8191 m1 || framework_failure
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truncate -s 8193 p1 || framework_failure
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fail=0
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for i in short m1 p1; do
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rm -f out
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dd if=$i oflag=direct of=out || fail=1
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done
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Exit $fail
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