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6bf789d69e
This introduces <dl-is_dso.h> and the _dl_is_dso function. A test ensures that the official names of libc.so, ld.so, and their versioned names are recognized. Reviewed-by: Carlos O'Donell <carlos@redhat.com> Tested-by: Carlos O'Donell <carlos@redhat.com>
34 lines
1.4 KiB
C
34 lines
1.4 KiB
C
/* Heuristic for recognizing DSO file names.
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Copyright (C) 2021 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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#include <stdbool.h>
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#include <string.h>
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/* Returns true if the file name looks like a DSO name. */
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static bool
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_dl_is_dso (const char *name)
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{
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/* Recognize lib*.so*, ld-*.so*, ld.so.*, ld64.so.*. ld-*.so*
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matches both platform dynamic linker names like ld-linux.so.2,
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and versioned dynamic loader names like ld-2.12.so. */
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return (((strncmp (name, "lib", 3) == 0 || strncmp (name, "ld-", 3) == 0)
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&& strstr (name, ".so") != NULL)
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|| strncmp (name, "ld.so.", 6) == 0
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|| strncmp (name, "ld64.so.", 8) == 0);
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}
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