1/* Check LD_AUDIT and LD_BIND_NOW.
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 <array_length.h>
20#include <errno.h>
21#include <getopt.h>
22#include <limits.h>
23#include <inttypes.h>
24#include <string.h>
25#include <stdlib.h>
26#include <support/capture_subprocess.h>
27#include <support/check.h>
28#include <support/xstdio.h>
29#include <support/support.h>
30#include <sys/auxv.h>
31
32#include "tst-audit25.h"
33
34static int restart;
35#define CMDLINE_OPTIONS \
36 { "restart", no_argument, &restart, 1 },
37
38void tst_audit25mod1_func1 (void);
39void tst_audit25mod1_func2 (void);
40void tst_audit25mod2_func1 (void);
41void tst_audit25mod2_func2 (void);
42
43static int
44handle_restart (void)
45{
46 tst_audit25mod1_func1 ();
47 tst_audit25mod1_func2 ();
48 tst_audit25mod2_func1 ();
49 tst_audit25mod2_func2 ();
50
51 return 0;
52}
53
54static int
55do_test (int argc, char *argv[])
56{
57 /* We must have either:
58 - One or four parameters left if called initially:
59 + path to ld.so optional
60 + "--library-path" optional
61 + the library path optional
62 + the application name */
63
64 if (restart)
65 return handle_restart ();
66
67 setenv (name: "LD_AUDIT", value: "tst-auditmod25.so", replace: 0);
68
69 char *spargv[9];
70 int i = 0;
71 for (; i < argc - 1; i++)
72 spargv[i] = argv[i + 1];
73 spargv[i++] = (char *) "--direct";
74 spargv[i++] = (char *) "--restart";
75 spargv[i] = NULL;
76
77 {
78 struct support_capture_subprocess result
79 = support_capture_subprogram (file: spargv[0], argv: spargv);
80 support_capture_subprocess_check (&result, context: "tst-audit25a", status_or_signal: 0,
81 allowed: sc_allow_stderr);
82
83 /* tst-audit25a and tst-audit25mod1 are built with -Wl,-z,now, but
84 tst-audit25mod2 is built with -Wl,-z,lazy. So only
85 tst_audit25mod4_func1 (called by tst_audit25mod2_func1) should not
86 have LA_SYMB_NOPLTENTER | LA_SYMB_NOPLTEXIT. */
87 const char *expected[] =
88 {
89 "la_symbind: tst_audit25mod3_func1 1\n",
90 "la_symbind: tst_audit25mod1_func1 1\n",
91 "la_symbind: tst_audit25mod2_func1 1\n",
92 "la_symbind: tst_audit25mod1_func2 1\n",
93 "la_symbind: tst_audit25mod2_func2 1\n",
94 "la_symbind: tst_audit25mod4_func1 0\n",
95 };
96 compare_output (buffer: result.err.buffer, length: result.err.length,
97 ref: expected, array_length(expected));
98
99 support_capture_subprocess_free (&result);
100 }
101
102 {
103 setenv (name: "LD_BIND_NOW", value: "1", replace: 0);
104 struct support_capture_subprocess result
105 = support_capture_subprogram (file: spargv[0], argv: spargv);
106 support_capture_subprocess_check (&result, context: "tst-audit25a", status_or_signal: 0,
107 allowed: sc_allow_stderr);
108
109 /* With LD_BIND_NOW all symbols are expected to have
110 LA_SYMB_NOPLTENTER | LA_SYMB_NOPLTEXIT. Also the resolution
111 order is done in breadth-first order. */
112 const char *expected[] =
113 {
114 "la_symbind: tst_audit25mod4_func1 1\n",
115 "la_symbind: tst_audit25mod3_func1 1\n",
116 "la_symbind: tst_audit25mod1_func1 1\n",
117 "la_symbind: tst_audit25mod2_func1 1\n",
118 "la_symbind: tst_audit25mod1_func2 1\n",
119 "la_symbind: tst_audit25mod2_func2 1\n",
120 };
121 compare_output (buffer: result.err.buffer, length: result.err.length,
122 ref: expected, array_length(expected));
123
124 support_capture_subprocess_free (&result);
125 }
126
127 return 0;
128}
129
130#define TEST_FUNCTION_ARGV do_test
131#include <support/test-driver.c>
132

source code of glibc/elf/tst-audit25b.c