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The LD_PRELOAD checks by -fsanitize=address are overly strict: https://groups.google.com/forum/#!topic/address-sanitizer/jEvOJgkDqQk A workaround is to first export LD_PRELOAD=libasan.so.2 The tests below are adjusted so that workaround is not discarded. * tests/cp/no-ctx.sh: Append to $LD_PRELOAD. * tests/df/no-mtab-status.sh: Likewise. * tests/df/skip-duplicates.sh: Likewise. * tests/ls/getxattr-speedup.sh: Likewise. * tests/rm/r-root.sh: Likewise. * tests/cp/nfs-removal-race.sh: Likewise. Also check that LD_PRELOAD is effective to aid future maintainability and avoid false failure if libasan.so.2 is not preloaded.
67 lines
2.2 KiB
Bash
Executable File
67 lines
2.2 KiB
Bash
Executable File
#!/bin/sh
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# Show that we've eliminated most of ls' failing getxattr syscalls,
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# regardless of how many files are in a directory we list.
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# This test is skipped on systems that lack LD_PRELOAD support; that's fine.
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# Similarly, on a system that lacks getxattr altogether, skipping it is fine.
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# Copyright (C) 2012-2015 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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. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
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print_ver_ ls
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require_gcc_shared_
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# Replace each getxattr and lgetxattr call with a call to these stubs.
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# Count those and write the total number of calls to the file "x"
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# via a global destructor.
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cat > k.c <<'EOF' || framework_failure_
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#include <errno.h>
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#include <stdio.h>
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#include <sys/types.h>
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static unsigned long int n_calls;
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static void __attribute__ ((destructor))
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print_call_count (void)
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{
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FILE *fp = fopen ("x", "w"); if (!fp) return;
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fprintf (fp, "%lu\n", n_calls); fclose (fp);
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}
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static ssize_t incr () { ++n_calls; errno = ENOTSUP; return -1; }
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ssize_t getxattr (const char *path, const char *name, void *value, size_t size)
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{ return incr (); }
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ssize_t lgetxattr(const char *path, const char *name, void *value, size_t size)
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{ return incr (); }
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EOF
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# Then compile/link it:
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gcc_shared_ k.c k.so \
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|| framework_failure_ 'failed to build shared library'
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# Create a few files:
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seq 20 | xargs touch || framework_failure_
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# Finally, run the test:
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LD_PRELOAD=$LD_PRELOAD:./k.so ls --color=always -l . || fail=1
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test -f x || skip_ "internal test failure: maybe LD_PRELOAD doesn't work?"
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# Ensure that there were no more than 3 *getxattr calls.
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n_calls=$(cat x)
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test "$n_calls" -le 3 || fail=1
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Exit $fail
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