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 |
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 inline bool |
53 | startswith (const char *str, const char *pre) |
54 | { |
55 | size_t lenpre = strlen (s: pre); |
56 | size_t lenstr = strlen (s: str); |
57 | return lenstr < lenpre ? false : memcmp (s1: pre, s2: str, n: lenpre) == 0; |
58 | } |
59 | |
60 | static int |
61 | do_test (int argc, char *argv[]) |
62 | { |
63 | /* We must have either: |
64 | - One or four parameters left if called initially: |
65 | + path to ld.so optional |
66 | + "--library-path" optional |
67 | + the library path optional |
68 | + the application name */ |
69 | |
70 | if (restart) |
71 | return handle_restart (); |
72 | |
73 | setenv (name: "LD_AUDIT" , value: "tst-auditmod25.so" , replace: 0); |
74 | |
75 | char *spargv[9]; |
76 | int i = 0; |
77 | for (; i < argc - 1; i++) |
78 | spargv[i] = argv[i + 1]; |
79 | spargv[i++] = (char *) "--direct" ; |
80 | spargv[i++] = (char *) "--restart" ; |
81 | spargv[i] = NULL; |
82 | TEST_VERIFY_EXIT (i < array_length (spargv)); |
83 | |
84 | { |
85 | struct support_capture_subprocess result |
86 | = support_capture_subprogram (file: spargv[0], argv: spargv); |
87 | support_capture_subprocess_check (&result, context: "tst-audit25a" , status_or_signal: 0, |
88 | allowed: sc_allow_stderr); |
89 | |
90 | /* tst-audit25a is build with -Wl,-z,lazy and tst-audit25mod1 with |
91 | -Wl,-z,now; so only tst_audit25mod3_func1 should be expected to |
92 | have LA_SYMB_NOPLTENTER | LA_SYMB_NOPLTEXIT. */ |
93 | TEST_COMPARE_STRING (result.err.buffer, |
94 | "la_symbind: tst_audit25mod3_func1 1\n" |
95 | "la_symbind: tst_audit25mod1_func1 0\n" |
96 | "la_symbind: tst_audit25mod1_func2 0\n" |
97 | "la_symbind: tst_audit25mod2_func1 0\n" |
98 | "la_symbind: tst_audit25mod4_func1 0\n" |
99 | "la_symbind: tst_audit25mod2_func2 0\n" ); |
100 | |
101 | support_capture_subprocess_free (&result); |
102 | } |
103 | |
104 | { |
105 | setenv (name: "LD_BIND_NOW" , value: "1" , replace: 0); |
106 | struct support_capture_subprocess result |
107 | = support_capture_subprogram (file: spargv[0], argv: spargv); |
108 | support_capture_subprocess_check (&result, context: "tst-audit25a" , status_or_signal: 0, |
109 | allowed: sc_allow_stderr); |
110 | |
111 | /* With LD_BIND_NOW all symbols are expected to have |
112 | LA_SYMB_NOPLTENTER | LA_SYMB_NOPLTEXIT. Also the resolution |
113 | order is done in breadth-first order. */ |
114 | TEST_COMPARE_STRING (result.err.buffer, |
115 | "la_symbind: tst_audit25mod4_func1 1\n" |
116 | "la_symbind: tst_audit25mod3_func1 1\n" |
117 | "la_symbind: tst_audit25mod1_func1 1\n" |
118 | "la_symbind: tst_audit25mod2_func1 1\n" |
119 | "la_symbind: tst_audit25mod1_func2 1\n" |
120 | "la_symbind: tst_audit25mod2_func2 1\n" ); |
121 | |
122 | support_capture_subprocess_free (&result); |
123 | } |
124 | |
125 | return 0; |
126 | } |
127 | |
128 | #define TEST_FUNCTION_ARGV do_test |
129 | #include <support/test-driver.c> |
130 | |