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1 | /* Check DT_AUDIT with dlmopen. | |
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 <array_length.h> | |
20 | #include <getopt.h> | |
21 | #include <string.h> | |
22 | #include <stdlib.h> | |
23 | #include <unistd.h> | |
24 | #include <gnu/lib-names.h> | |
25 | #include <support/capture_subprocess.h> | |
26 | #include <support/check.h> | |
27 | #include <support/xdlfcn.h> | |
28 | #include <support/xstdio.h> | |
29 | #include <support/support.h> | |
30 | ||
31 | static int restart; | |
32 | #define CMDLINE_OPTIONS \ | |
33 | { "restart", no_argument, &restart, 1 }, | |
34 | ||
35 | static int | |
36 | handle_restart (void) | |
37 | { | |
38 | { | |
39 | void *h = xdlmopen (LM_ID_NEWLM, LIBC_SO, RTLD_NOW); | |
40 | ||
41 | pid_t (*s) (void) = xdlsym (h, "getpid"); | |
42 | TEST_COMPARE (s (), getpid ()); | |
43 | ||
44 | xdlclose (h); | |
45 | } | |
46 | ||
47 | { | |
48 | void *h = xdlmopen (LM_ID_NEWLM, "tst-audit18mod.so", RTLD_NOW); | |
49 | ||
50 | int (*foo) (void) = xdlsym (h, "foo"); | |
51 | TEST_COMPARE (foo (), 10); | |
52 | ||
53 | xdlclose (h); | |
54 | } | |
55 | ||
56 | return 0; | |
57 | } | |
58 | ||
59 | static int | |
60 | do_test (int argc, char *argv[]) | |
61 | { | |
62 | /* We must have either: | |
63 | - One our fource parameters left if called initially: | |
64 | + path to ld.so optional | |
65 | + "--library-path" optional | |
66 | + the library path optional | |
67 | + the application name */ | |
68 | ||
69 | if (restart) | |
70 | return handle_restart (); | |
71 | ||
72 | char *spargv[9]; | |
73 | int i = 0; | |
74 | for (; i < argc - 1; i++) | |
75 | spargv[i] = argv[i + 1]; | |
76 | spargv[i++] = (char *) "--direct"; | |
77 | spargv[i++] = (char *) "--restart"; | |
78 | spargv[i] = NULL; | |
79 | ||
80 | setenv ("LD_AUDIT", "tst-auditmod18.so", 0); | |
81 | struct support_capture_subprocess result | |
82 | = support_capture_subprogram (spargv[0], spargv); | |
83 | support_capture_subprocess_check (&result, "tst-audit18", 0, sc_allow_stderr); | |
84 | ||
85 | struct | |
86 | { | |
87 | const char *name; | |
88 | bool found; | |
89 | } audit_iface[] = | |
90 | { | |
91 | { "la_version", false }, | |
92 | { "la_objsearch", false }, | |
93 | { "la_activity", false }, | |
94 | { "la_objopen", false }, | |
95 | { "la_objclose", false }, | |
96 | { "la_preinit", false }, | |
97 | #if __WORDSIZE == 32 | |
98 | { "la_symbind32", false }, | |
99 | #elif __WORDSIZE == 64 | |
100 | { "la_symbind64", false }, | |
101 | #endif | |
102 | }; | |
103 | ||
104 | /* Some hooks are called more than once but the test only check if any | |
105 | is called at least once. */ | |
106 | FILE *out = fmemopen (result.err.buffer, result.err.length, "r"); | |
107 | TEST_VERIFY (out != NULL); | |
108 | char *buffer = NULL; | |
109 | size_t buffer_length = 0; | |
110 | while (xgetline (&buffer, &buffer_length, out)) | |
111 | { | |
112 | for (int i = 0; i < array_length (audit_iface); i++) | |
113 | if (strncmp (buffer, audit_iface[i].name, | |
114 | strlen (audit_iface[i].name)) == 0) | |
115 | audit_iface[i].found = true; | |
116 | } | |
117 | free (buffer); | |
118 | xfclose (out); | |
119 | ||
120 | for (int i = 0; i < array_length (audit_iface); i++) | |
121 | TEST_COMPARE (audit_iface[i].found, true); | |
122 | ||
123 | support_capture_subprocess_free (&result); | |
124 | ||
125 | return 0; | |
126 | } | |
127 | ||
128 | #define TEST_FUNCTION_ARGV do_test | |
129 | #include <support/test-driver.c> |