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 <errno.h> |
20 | #include <getopt.h> |
21 | #include <limits.h> |
22 | #include <inttypes.h> |
23 | #include <string.h> |
24 | #include <stdlib.h> |
25 | #include <support/capture_subprocess.h> |
26 | #include <support/check.h> |
27 | #include <support/xstdio.h> |
28 | #include <support/support.h> |
29 | #include <sys/auxv.h> |
30 | |
31 | static int restart; |
32 | #define CMDLINE_OPTIONS \ |
33 | { "restart", no_argument, &restart, 1 }, |
34 | |
35 | void tst_audit25mod1_func1 (void); |
36 | void tst_audit25mod1_func2 (void); |
37 | void tst_audit25mod2_func1 (void); |
38 | void tst_audit25mod2_func2 (void); |
39 | |
40 | static int |
41 | handle_restart (void) |
42 | { |
43 | tst_audit25mod1_func1 (); |
44 | tst_audit25mod1_func2 (); |
45 | tst_audit25mod2_func1 (); |
46 | tst_audit25mod2_func2 (); |
47 | |
48 | return 0; |
49 | } |
50 | |
51 | static inline bool |
52 | startswith (const char *str, const char *pre) |
53 | { |
54 | size_t lenpre = strlen (s: pre); |
55 | size_t lenstr = strlen (s: str); |
56 | return lenstr >= lenpre && memcmp (s1: pre, s2: str, n: lenpre) == 0; |
57 | } |
58 | |
59 | static int |
60 | do_test (int argc, char *argv[]) |
61 | { |
62 | /* We must have either: |
63 | - One or four 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 | setenv (name: "LD_AUDIT" , value: "tst-auditmod25.so" , replace: 0); |
73 | |
74 | char *spargv[9]; |
75 | int i = 0; |
76 | for (; i < argc - 1; i++) |
77 | spargv[i] = argv[i + 1]; |
78 | spargv[i++] = (char *) "--direct" ; |
79 | spargv[i++] = (char *) "--restart" ; |
80 | spargv[i] = NULL; |
81 | |
82 | { |
83 | struct support_capture_subprocess result |
84 | = support_capture_subprogram (file: spargv[0], argv: spargv); |
85 | support_capture_subprocess_check (&result, context: "tst-audit25a" , status_or_signal: 0, |
86 | allowed: sc_allow_stderr); |
87 | |
88 | /* tst-audit25a and tst-audit25mod1 are built with -Wl,-z,now, but |
89 | tst-audit25mod2 is built with -Wl,-z,lazy. So only |
90 | tst_audit25mod4_func1 (called by tst_audit25mod2_func1) should not |
91 | have LA_SYMB_NOPLTENTER | LA_SYMB_NOPLTEXIT. */ |
92 | TEST_COMPARE_STRING (result.err.buffer, |
93 | "la_symbind: tst_audit25mod3_func1 1\n" |
94 | "la_symbind: tst_audit25mod1_func1 1\n" |
95 | "la_symbind: tst_audit25mod2_func1 1\n" |
96 | "la_symbind: tst_audit25mod1_func2 1\n" |
97 | "la_symbind: tst_audit25mod2_func2 1\n" |
98 | "la_symbind: tst_audit25mod4_func1 0\n" ); |
99 | |
100 | support_capture_subprocess_free (&result); |
101 | } |
102 | |
103 | { |
104 | setenv (name: "LD_BIND_NOW" , value: "1" , replace: 0); |
105 | struct support_capture_subprocess result |
106 | = support_capture_subprogram (file: spargv[0], argv: spargv); |
107 | support_capture_subprocess_check (&result, context: "tst-audit25a" , status_or_signal: 0, |
108 | allowed: sc_allow_stderr); |
109 | |
110 | /* With LD_BIND_NOW all symbols are expected to have |
111 | LA_SYMB_NOPLTENTER | LA_SYMB_NOPLTEXIT. Also the resolution |
112 | order is done in breadth-first order. */ |
113 | TEST_COMPARE_STRING (result.err.buffer, |
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 | support_capture_subprocess_free (&result); |
122 | } |
123 | |
124 | return 0; |
125 | } |
126 | |
127 | #define TEST_FUNCTION_ARGV do_test |
128 | #include <support/test-driver.c> |
129 | |