1 | /* Audit modules for tst-audit25a. |
2 | Copyright (C) 2022-2024 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 <link.h> |
20 | #include <inttypes.h> |
21 | #include <stdlib.h> |
22 | #include <string.h> |
23 | #include <stdio.h> |
24 | |
25 | #define AUDIT25_COOKIE 0x1 |
26 | #define AUDIT25MOD1_COOKIE 0x2 |
27 | #define AUDIT25MOD2_COOKIE 0x3 |
28 | #define AUDIT25MOD3_COOKIE 0x2 |
29 | #define AUDIT25MOD4_COOKIE 0x3 |
30 | |
31 | #define TEST_NAME "tst-audit25" |
32 | #define TEST_MOD "tst-audit25" |
33 | #define TEST_FUNC "tst_audit25" |
34 | |
35 | unsigned int |
36 | la_version (unsigned int version) |
37 | { |
38 | return LAV_CURRENT; |
39 | } |
40 | |
41 | unsigned int |
42 | la_objopen (struct link_map *map, Lmid_t lmid, uintptr_t *cookie) |
43 | { |
44 | const char *p = strrchr (s: map->l_name, c: '/'); |
45 | const char *l_name = p == NULL ? TEST_NAME : p + 1; |
46 | |
47 | uintptr_t ck = -1; |
48 | if (strcmp (s1: l_name, TEST_MOD "mod1.so" ) == 0) |
49 | ck = AUDIT25MOD1_COOKIE; |
50 | else if (strcmp (s1: l_name, TEST_MOD "mod2.so" ) == 0) |
51 | ck = AUDIT25MOD2_COOKIE; |
52 | else if (strcmp (s1: l_name, TEST_MOD "mod3.so" ) == 0) |
53 | ck = AUDIT25MOD3_COOKIE; |
54 | else if (strcmp (s1: l_name, TEST_MOD "mod4.so" ) == 0) |
55 | ck = AUDIT25MOD4_COOKIE; |
56 | else if (strncmp (s1: l_name, TEST_NAME, n: strlen (TEST_NAME)) == 0) |
57 | ck = AUDIT25_COOKIE; |
58 | |
59 | *cookie = ck; |
60 | return ck == -1 ? 0 : LA_FLG_BINDFROM | LA_FLG_BINDTO; |
61 | } |
62 | |
63 | #if __ELF_NATIVE_CLASS == 64 |
64 | uintptr_t |
65 | la_symbind64 (Elf64_Sym *sym, unsigned int ndx, |
66 | uintptr_t *refcook, uintptr_t *defcook, |
67 | unsigned int *flags, const char *symname) |
68 | #else |
69 | uintptr_t |
70 | la_symbind32 (Elf32_Sym *sym, unsigned int ndx, |
71 | uintptr_t *refcook, uintptr_t *defcook, |
72 | unsigned int *flags, const char *symname) |
73 | #endif |
74 | { |
75 | if (*refcook != -1 && *defcook != -1 && symname[0] != '\0' |
76 | && (*flags & LA_SYMB_DLSYM) == 0) |
77 | fprintf (stderr, format: "la_symbind: %s %u\n" , symname, |
78 | *flags & (LA_SYMB_NOPLTENTER | LA_SYMB_NOPLTEXIT) ? 1 : 0); |
79 | return sym->st_value; |
80 | } |
81 | |