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3c88587b2e
Run this command to remove the factored-out "fail=0" lines. perl -ni -e '/^fail=0$/ or print' $(g grep -l '^fail=0$') * tests/test-lib.sh: Initialize fail=0 here, not in 300+ scripts. * tests/...: nearly all bourne shell scripts Suggested by Eric Blake.
73 lines
2.3 KiB
Bash
Executable File
73 lines
2.3 KiB
Bash
Executable File
#!/bin/sh
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# readlink from 6.9 would fail with a false-positive symlink loop error
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# Copyright (C) 2007-2009 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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readlink --version
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fi
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. $srcdir/test-lib.sh
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cwd=$("$abs_top_builddir/src/pwd")
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# To trigger this bug, we have to construct a name/situation during
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# the resolution of which the code dereferences the same symlink (S)
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# two different times with no actual loop. In addition, arrange
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# so that the second and fourth calls to readlink operate on S.
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ln -s s p || framework_failure
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ln -s d s || framework_failure
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mkdir d || framework_failure
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echo 2 > d/2 || framework_failure
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ln -s ../s/2 d/1 || framework_failure
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# With coreutils-6.9, this would fail with ELOOP.
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readlink -v -e p/1 > out || fail=1
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# readlink -e d/2 > exp || fail=1
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echo "$cwd/d/2" > exp || fail=1
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compare out exp || fail=1
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# Construct a real loop and make sure readlink still detects it.
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ln -sf ../s/1 d/2 || framework_failure
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readlink -v -e p/1 2> out && fail=1
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readlink_msg=$(cat out)
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case $readlink_msg in
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'readlink: p/1: '*) ;;
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*) fail=1;;
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esac
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symlink_loop_msg=${readlink_msg#'readlink: p/1: '}
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# Exercise the hash table code.
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ln -nsf ../s/3 d/2 || framework_failure
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ln -nsf ../p/4 d/3 || framework_failure
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ln -nsf ../p/5 d/4 || framework_failure
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ln -nsf ../p/6 d/5 || framework_failure
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ln -nsf ../p/7 d/6 || framework_failure
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ln -nsf ../p/8 d/7 || framework_failure
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echo x > d/8 || framework_failure
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readlink -v -e p/1 > out || fail=1
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echo "$cwd/d/8" > exp || fail=1
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compare out exp || fail=1
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# A trivial loop
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ln -s loop loop
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readlink -v -e loop 2> out && fail=1
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echo "readlink: loop: $symlink_loop_msg" > exp || framework_failure
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compare out exp || fail=1
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Exit $fail
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