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600d9e0c87
This recognizes the DL_CACHE_HWCAP_EXTENSION flag in cache entries, and picks the supported cache entry with the highest priority. The elf/tst-glibc-hwcaps-prepend-cache test documents a non-desired aspect of the current cache implementation: If the cache selects a DSO that does not exist on disk, _dl_map_object falls back to open_path, which may or may not find an alternative implementation. This is an existing limitation that also applies to the legacy hwcaps processing for ld.so.cache. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
46 lines
1.6 KiB
C
46 lines
1.6 KiB
C
/* Wrapper to invoke tst-glibc-hwcaps in a container, to test ld.so.cache.
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Copyright (C) 2020 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library 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 GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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/* This program is just a wrapper that runs ldconfig followed by
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tst-glibc-hwcaps. The actual test is provided via an
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implementation in a sysdeps subdirectory. */
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#include <stdio.h>
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#include <stdlib.h>
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#include <support/support.h>
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#include <unistd.h>
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int
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main (int argc, char **argv)
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{
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/* Run ldconfig to populate the cache. */
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{
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char *command = xasprintf ("%s/ldconfig", support_install_rootsbindir);
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if (system (command) != 0)
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return 1;
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free (command);
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}
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/* Reuse tst-glibc-hwcaps. Since this code is running in a
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container, we can launch it directly. */
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char *path = xasprintf ("%s/elf/tst-glibc-hwcaps", support_objdir_root);
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execv (path, argv);
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printf ("error: execv of %s failed: %m\n", path);
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return 1;
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}
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