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77da73c754
Run "make update-copyright", but then also run this, perl -pi -e 's/2\d\d\d-//' tests/sample-test to make that one script use the single most recent year number.
65 lines
1.9 KiB
Bash
65 lines
1.9 KiB
Bash
#!/bin/sh
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# This is just for the record.
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# This test is not run.
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# Copyright (C) 2003-2013 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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exit 0
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cat <<\EOF
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Prior to 5.0.91, ...
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The problem:
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On a VFAT file system with coreutils-5.0.90, 'mv FOO foo' removes the
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sole copy of the file named by both the source and destination arguments.
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Demonstrate the problem, as root:
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cd /tmp \
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&& dd if=/dev/zero of=1 bs=8192 count=50 \
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&& mkdir mnt && mkfs -t vfat 1 \
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&& mount -oloop 1 mnt && cd mnt \
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&& printf something important > foo \
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&& mv foo FOO
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test -f FOO && echo PASS-1 || echo FAIL-1
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ln foo bar
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mv foo FOO
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test -f FOO && echo PASS-2 || echo FAIL-2
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And in case you actually do the above, you can do this to clean up:
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cd /tmp && umount /tmp/mnt && rm -r 1 mnt
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Hey! Can't create hard links on vfat.
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The above 'ln' evokes an 'operation not permitted' failure.
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This demonstrates the same thing with file system type 'umsdos'
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No hard links:
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cd /tmp \
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&& dd if=/dev/zero of=1 bs=8192 count=50 \
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&& mkdir mnt && mkfs -t msdos 1 \
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&& mount -t umsdos -oloop 1 mnt && cd mnt \
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&& printf something important > foo \
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&& mv foo FOO
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test -f FOO && echo PASS-1 || echo FAIL-1
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ln foo bar
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mv foo FOO
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test -f FOO && echo PASS-2 || echo FAIL-2
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EOF
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