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 | |
34 | static int restart; |
35 | #define CMDLINE_OPTIONS \ |
36 | { "restart", no_argument, &restart, 1 }, |
37 | |
38 | void tst_audit25mod1_func1 (void); |
39 | void tst_audit25mod1_func2 (void); |
40 | void tst_audit25mod2_func1 (void); |
41 | void tst_audit25mod2_func2 (void); |
42 | |
43 | static int |
44 | handle_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 | |
54 | static int |
55 | do_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 | |