69 lines
2.3 KiB
Bash
Executable file
69 lines
2.3 KiB
Bash
Executable file
#!/bin/sh
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# Ensure that using 'cp --preserve=link' to copy hard-linked arguments
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# onto existing destinations works, even when one of the link operations fails.
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# Copyright (C) 2003-2025 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 <https://www.gnu.org/licenses/>.
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# This bug was fixed in coreutils-4.5.9.
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# To exercise this bug is non-trivial:
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# Set-up requires at least three hard-linked files. In copying them,
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# while preserving links, the initial copy must succeed, the attempt
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# to create the second file via 'link' must fail, and the final 'link'
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# (to create the third) must succeed. Before the corresponding fix,
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# the first and third destination files would not be linked.
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#
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# Note that this is nominally a test of 'cp', yet it is in the tests/mv
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# directory, because it requires use of the --preserve=link option that
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# mv enables by default.
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. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
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print_ver_ cp
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skip_if_root_
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mkdir -p x dst/x || framework_failure_
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touch dst/x/b || framework_failure_
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chmod a-w dst/x
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touch a || framework_failure_
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ln a x/b || framework_failure_
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ln a c || framework_failure_
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# ======================================
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# This must fail -- because x/b cannot be unlinked.
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cp --preserve=link --parents a x/b c dst 2> /dev/null && fail=1
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# Source files must remain.
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test -f a || fail=1
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test -f x/b || fail=1
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test -f c || fail=1
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cd dst
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# Three destination files must exist.
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test -f a || fail=1
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test -f x/b || fail=1
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test -f c || fail=1
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# The i-node numbers of a and c must be the same.
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ia=$(ls -i a) || fail=1; set x $ia; ia=$2
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ic=$(ls -i c) || fail=1; set x $ic; ic=$2
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test "$ia" = "$ic" || fail=1
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# The i-node number of x/b must be different.
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ib=$(ls -i x/b) || fail=1; set x $ib; ib=$2
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test "$ia" = "$ib" && fail=1
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Exit $fail
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