1/* Heuristic for recognizing DSO file names.
2 Copyright (C) 2021-2022 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19#include <stdbool.h>
20#include <string.h>
21
22/* Returns true if the file name looks like a DSO name. */
23static bool
24_dl_is_dso (const char *name)
25{
26 /* Recognize lib*.so*, ld-*.so*, ld.so.*, ld64.so.*. ld-*.so*
27 matches both platform dynamic linker names like ld-linux.so.2,
28 and versioned dynamic loader names like ld-2.12.so. */
29 return (((strncmp (name, "lib", 3) == 0 || strncmp (name, "ld-", 3) == 0)
30 && strstr (name, ".so") != NULL)
31 || strncmp (name, "ld.so.", 6) == 0
32 || strncmp (name, "ld64.so.", 8) == 0);
33}
34