1 /* Check LD_AUDIT and LD_BIND_NOW.
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 <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 static int restart;
33 #define CMDLINE_OPTIONS \
34 { "restart", no_argument, &restart, 1 },
35
36 void tst_audit25mod1_func1 (void);
37 void tst_audit25mod1_func2 (void);
38 void tst_audit25mod2_func1 (void);
39 void tst_audit25mod2_func2 (void);
40
41 static int
handle_restart(void)42 handle_restart (void)
43 {
44 tst_audit25mod1_func1 ();
45 tst_audit25mod1_func2 ();
46 tst_audit25mod2_func1 ();
47 tst_audit25mod2_func2 ();
48
49 return 0;
50 }
51
52 static int
do_test(int argc,char * argv[])53 do_test (int argc, char *argv[])
54 {
55 /* We must have either:
56 - One or four parameters left if called initially:
57 + path to ld.so optional
58 + "--library-path" optional
59 + the library path optional
60 + the application name */
61
62 if (restart)
63 return handle_restart ();
64
65 setenv ("LD_AUDIT", "tst-auditmod25.so", 0);
66
67 char *spargv[9];
68 int i = 0;
69 for (; i < argc - 1; i++)
70 spargv[i] = argv[i + 1];
71 spargv[i++] = (char *) "--direct";
72 spargv[i++] = (char *) "--restart";
73 spargv[i] = NULL;
74 TEST_VERIFY_EXIT (i < array_length (spargv));
75
76 {
77 struct support_capture_subprocess result
78 = support_capture_subprogram (spargv[0], spargv);
79 support_capture_subprocess_check (&result, "tst-audit25a", 0,
80 sc_allow_stderr);
81
82 /* tst-audit25a is build with -Wl,-z,lazy and tst-audit25mod1 with
83 -Wl,-z,now; so only tst_audit25mod3_func1 should be expected to
84 have LA_SYMB_NOPLTENTER | LA_SYMB_NOPLTEXIT. */
85 TEST_COMPARE_STRING (result.err.buffer,
86 "la_symbind: tst_audit25mod3_func1 1\n"
87 "la_symbind: tst_audit25mod1_func1 0\n"
88 "la_symbind: tst_audit25mod1_func2 0\n"
89 "la_symbind: tst_audit25mod2_func1 0\n"
90 "la_symbind: tst_audit25mod4_func1 0\n"
91 "la_symbind: tst_audit25mod2_func2 0\n");
92
93 support_capture_subprocess_free (&result);
94 }
95
96 {
97 setenv ("LD_BIND_NOW", "1", 0);
98 struct support_capture_subprocess result
99 = support_capture_subprogram (spargv[0], spargv);
100 support_capture_subprocess_check (&result, "tst-audit25a", 0,
101 sc_allow_stderr);
102
103 /* With LD_BIND_NOW all symbols are expected to have
104 LA_SYMB_NOPLTENTER | LA_SYMB_NOPLTEXIT. Also the resolution
105 order is done in breadth-first order. */
106 TEST_COMPARE_STRING (result.err.buffer,
107 "la_symbind: tst_audit25mod4_func1 1\n"
108 "la_symbind: tst_audit25mod3_func1 1\n"
109 "la_symbind: tst_audit25mod1_func1 1\n"
110 "la_symbind: tst_audit25mod2_func1 1\n"
111 "la_symbind: tst_audit25mod1_func2 1\n"
112 "la_symbind: tst_audit25mod2_func2 1\n");
113
114 support_capture_subprocess_free (&result);
115 }
116
117 return 0;
118 }
119
120 #define TEST_FUNCTION_ARGV do_test
121 #include <support/test-driver.c>
122