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32612615 AZ |
1 | /* Audit modules for tst-audit24a. |
2 | Copyright (C) 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 <link.h> | |
20 | #include <inttypes.h> | |
21 | #include <stdlib.h> | |
22 | #include <string.h> | |
23 | #include <tst-auditmod24.h> | |
24 | ||
25 | #define AUDIT24_COOKIE 0x1 | |
26 | #define AUDIT24MOD1_COOKIE 0x2 | |
27 | #define AUDIT24MOD2_COOKIE 0x3 | |
28 | ||
29 | #ifndef TEST_NAME | |
30 | # define TEST_NAME "tst-audit24a" | |
31 | #endif | |
32 | #ifndef TEST_MOD | |
33 | # define TEST_MOD TEST_NAME | |
34 | #endif | |
35 | #ifndef TEST_FUNC | |
36 | # define TEST_FUNC "tst_audit24a" | |
37 | #endif | |
38 | ||
39 | unsigned int | |
40 | la_version (unsigned int version) | |
41 | { | |
42 | return LAV_CURRENT; | |
43 | } | |
44 | ||
45 | unsigned int | |
46 | la_objopen (struct link_map *map, Lmid_t lmid, uintptr_t *cookie) | |
47 | { | |
48 | const char *p = strrchr (map->l_name, '/'); | |
49 | const char *l_name = p == NULL ? TEST_NAME : p + 1; | |
50 | ||
51 | uintptr_t ck = -1; | |
52 | if (strcmp (l_name, TEST_MOD "mod1.so") == 0) | |
53 | ck = AUDIT24MOD1_COOKIE; | |
54 | else if (strcmp (l_name, TEST_MOD "mod2.so") == 0) | |
55 | ck = AUDIT24MOD2_COOKIE; | |
56 | else if (strcmp (l_name, TEST_NAME) == 0) | |
57 | ck = AUDIT24_COOKIE; | |
58 | ||
59 | *cookie = ck; | |
60 | return ck == -1 ? 0 : LA_FLG_BINDFROM | LA_FLG_BINDTO; | |
61 | } | |
62 | ||
63 | static int | |
64 | tst_func1 (void) | |
65 | { | |
66 | return 1; | |
67 | } | |
68 | ||
69 | static int | |
70 | tst_func2 (void) | |
71 | { | |
72 | return 10; | |
73 | } | |
74 | ||
75 | #if __ELF_NATIVE_CLASS == 64 | |
76 | uintptr_t | |
77 | la_symbind64 (Elf64_Sym *sym, unsigned int ndx, | |
78 | uintptr_t *refcook, uintptr_t *defcook, | |
79 | unsigned int *flags, const char *symname) | |
80 | #else | |
81 | uintptr_t | |
82 | la_symbind32 (Elf32_Sym *sym, unsigned int ndx, | |
83 | uintptr_t *refcook, uintptr_t *defcook, | |
84 | unsigned int *flags, const char *symname) | |
85 | #endif | |
86 | { | |
87 | if (*refcook == AUDIT24_COOKIE) | |
88 | { | |
89 | if (*defcook == AUDIT24MOD1_COOKIE) | |
90 | { | |
91 | /* Check if bind-now symbols are advertised to not call the PLT | |
92 | hooks. */ | |
93 | test_symbind_flags (*flags); | |
94 | ||
95 | if (strcmp (symname, TEST_FUNC "mod1_func1") == 0) | |
96 | return (uintptr_t) tst_func1; | |
97 | else if (strcmp (symname, TEST_FUNC "mod1_func2") == 0) | |
98 | return sym->st_value; | |
99 | abort (); | |
100 | } | |
101 | if (*defcook == AUDIT24MOD2_COOKIE | |
102 | && (strcmp (symname, TEST_FUNC "mod2_func1") == 0)) | |
103 | { | |
104 | test_symbind_flags (*flags); | |
105 | ||
106 | return (uintptr_t) tst_func2; | |
107 | } | |
108 | ||
109 | /* malloc functions. */ | |
110 | return sym->st_value; | |
111 | } | |
112 | ||
9e94f574 AZ |
113 | if (symname[0] != '\0') |
114 | abort (); | |
115 | return sym->st_value; | |
32612615 | 116 | } |