71 lines
2.3 KiB
Bash
Executable file
71 lines
2.3 KiB
Bash
Executable file
#!/bin/sh
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# Ensure we handle file systems returning no SELinux context,
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# which triggered a segmentation fault in coreutils-8.22.
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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 lgetfilecon altogether, skipping it is fine.
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# Copyright (C) 2014-2025 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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. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
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print_ver_ cp
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require_gcc_shared_
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require_selinux_
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# Replace each getfilecon and lgetfilecon call with a call to these stubs.
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cat > k.c <<'EOF' || framework_failure_
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#include <stdio.h>
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#include <selinux/selinux.h>
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#include <errno.h>
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int getfilecon (const char *path, char **con)
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{
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/* Leave a marker so we can identify if the function was intercepted. */
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fclose(fopen("preloaded", "w"));
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errno=ENODATA;
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return -1;
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}
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int getfilecon_raw (const char *path, char **con)
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{ return getfilecon (path, con); }
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int lgetfilecon (const char *path, char **con)
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{ return getfilecon (path, con); }
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int lgetfilecon_raw (const char *path, char **con)
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{ return getfilecon (path, con); }
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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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|| skip_ 'failed to build SELinux shared library'
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touch file_src
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# New file with SELinux context optionally included
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LD_PRELOAD=$LD_PRELOAD:./k.so cp -a file_src file_dst || fail=1
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# Existing file with SELinux context optionally included
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LD_PRELOAD=$LD_PRELOAD:./k.so cp -a file_src file_dst || fail=1
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# ENODATA should give an immediate error when required to preserve ctx
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# This is debatable, and maybe we should not fail when no context available?
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( export LD_PRELOAD=$LD_PRELOAD:./k.so
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returns_ 1 cp --preserve=context file_src file_dst ) || fail=1
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test -e preloaded || skip_ 'LD_PRELOAD interception failed'
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Exit $fail
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