1 | /* Audit module for tst-audit24d. |
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 <tst-auditmod24.h> |
24 | |
25 | #define AUDIT24_COOKIE 0x0 |
26 | #define AUDIT24MOD1_COOKIE 0x1 |
27 | #define AUDIT24MOD2_COOKIE 0x2 |
28 | #define AUDIT24MOD3_COOKIE 0x3 |
29 | #define AUDIT24MOD4_COOKIE 0x4 |
30 | |
31 | unsigned int |
32 | la_version (unsigned int version) |
33 | { |
34 | return LAV_CURRENT; |
35 | } |
36 | |
37 | unsigned int |
38 | la_objopen (struct link_map *map, Lmid_t lmid, uintptr_t *cookie) |
39 | { |
40 | const char *p = strrchr (s: map->l_name, c: '/'); |
41 | const char *l_name = p == NULL ? "tst-audit24d" : p + 1; |
42 | |
43 | uintptr_t ck = -1; |
44 | if (strcmp (s1: l_name, s2: "tst-audit24dmod1.so" ) == 0) |
45 | ck = AUDIT24MOD1_COOKIE; |
46 | else if (strcmp (s1: l_name, s2: "tst-audit24dmod2.so" ) == 0) |
47 | ck = AUDIT24MOD2_COOKIE; |
48 | else if (strcmp (s1: l_name, s2: "tst-audit24dmod3.so" ) == 0) |
49 | ck = AUDIT24MOD3_COOKIE; |
50 | else if (strcmp (s1: l_name, s2: "tst-audit24dmod.so" ) == 0) |
51 | ck = AUDIT24MOD4_COOKIE; |
52 | else if (strcmp (s1: l_name, s2: "tst-audit24d" ) == 0) |
53 | ck = AUDIT24_COOKIE; |
54 | |
55 | *cookie = ck; |
56 | return ck == -1 ? 0 : LA_FLG_BINDFROM | LA_FLG_BINDTO; |
57 | } |
58 | |
59 | static int |
60 | tst_audit24dmod1_func1 (void) |
61 | { |
62 | return 1; |
63 | } |
64 | |
65 | static int |
66 | tst_audit24dmod2_func1 (void) |
67 | { |
68 | return 10; |
69 | } |
70 | |
71 | static int |
72 | tst_audit24dmod3_func1 (void) |
73 | { |
74 | return 30; |
75 | } |
76 | |
77 | #include <stdio.h> |
78 | |
79 | #if __ELF_NATIVE_CLASS == 64 |
80 | uintptr_t |
81 | la_symbind64 (Elf64_Sym *sym, unsigned int ndx, |
82 | uintptr_t *refcook, uintptr_t *defcook, |
83 | unsigned int *flags, const char *symname) |
84 | #else |
85 | uintptr_t |
86 | la_symbind32 (Elf32_Sym *sym, unsigned int ndx, |
87 | uintptr_t *refcook, uintptr_t *defcook, |
88 | unsigned int *flags, const char *symname) |
89 | #endif |
90 | { |
91 | if (*refcook == AUDIT24_COOKIE) |
92 | { |
93 | if (*defcook == AUDIT24MOD1_COOKIE) |
94 | { |
95 | if (strcmp (s1: symname, s2: "tst_audit24dmod1_func1" ) == 0) |
96 | return (uintptr_t) tst_audit24dmod1_func1; |
97 | else if (strcmp (s1: symname, s2: "tst_audit24dmod1_func2" ) == 0) |
98 | return sym->st_value; |
99 | abort (); |
100 | } |
101 | if (*defcook == AUDIT24MOD2_COOKIE |
102 | && (strcmp (s1: symname, s2: "tst_audit24dmod2_func1" ) == 0)) |
103 | return (uintptr_t) tst_audit24dmod2_func1; |
104 | |
105 | /* malloc functions. */ |
106 | return sym->st_value; |
107 | } |
108 | else if (*refcook == AUDIT24MOD1_COOKIE) |
109 | { |
110 | if (*defcook == AUDIT24MOD3_COOKIE |
111 | && strcmp (s1: symname, s2: "tst_audit24dmod3_func1" ) == 0) |
112 | { |
113 | test_symbind_flags (flags: *flags); |
114 | |
115 | return (uintptr_t) tst_audit24dmod3_func1; |
116 | } |
117 | } |
118 | |
119 | if (symname[0] != '\0') |
120 | abort (); |
121 | return sym->st_value; |
122 | } |
123 | |