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71648e80 JST |
1 | /* Check GLIBC_TUNABLES parsing for enable_secure. |
2 | Copyright (C) 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 <dl-tunables.h> | |
21 | #include <getopt.h> | |
22 | #include <intprops.h> | |
23 | #include <stdint.h> | |
24 | #include <stdlib.h> | |
25 | #include <support/capture_subprocess.h> | |
26 | #include <support/check.h> | |
27 | #include <sys/auxv.h> | |
28 | #include <unistd.h> | |
29 | ||
30 | static int restart; | |
31 | #define CMDLINE_OPTIONS \ | |
32 | { "restart", no_argument, &restart, 1 }, | |
33 | ||
34 | static const struct test_t | |
35 | { | |
36 | const char *env; | |
37 | int32_t expected_malloc_check; | |
38 | int32_t expected_enable_secure; | |
39 | } tests[] = | |
40 | { | |
41 | /* Expected tunable format. */ | |
42 | /* Tunables should be ignored if enable_secure is set. */ | |
43 | { | |
44 | "glibc.malloc.check=2:glibc.rtld.enable_secure=1", | |
45 | 0, | |
46 | 1, | |
47 | }, | |
48 | /* Tunables should be ignored if enable_secure is set. */ | |
49 | { | |
50 | "glibc.rtld.enable_secure=1:glibc.malloc.check=2", | |
51 | 0, | |
52 | 1, | |
53 | }, | |
54 | /* Tunables should be set if enable_secure is unset. */ | |
55 | { | |
56 | "glibc.rtld.enable_secure=0:glibc.malloc.check=2", | |
57 | 2, | |
58 | 0, | |
59 | }, | |
60 | }; | |
61 | ||
62 | static int | |
63 | handle_restart (int i) | |
64 | { | |
65 | if (tests[i].expected_enable_secure == 1) | |
66 | { | |
67 | TEST_COMPARE (1, __libc_enable_secure); | |
68 | } | |
69 | else | |
70 | { | |
71 | TEST_COMPARE (tests[i].expected_malloc_check, | |
72 | TUNABLE_GET_FULL (glibc, malloc, check, int32_t, NULL)); | |
73 | TEST_COMPARE (tests[i].expected_enable_secure, | |
74 | TUNABLE_GET_FULL (glibc, rtld, enable_secure, int32_t, | |
75 | NULL)); | |
76 | } | |
77 | return 0; | |
78 | } | |
79 | ||
80 | static int | |
81 | do_test (int argc, char *argv[]) | |
82 | { | |
83 | /* We must have either: | |
84 | - One or four parameters left if called initially: | |
85 | + path to ld.so optional | |
86 | + "--library-path" optional | |
87 | + the library path optional | |
88 | + the application name | |
89 | + the test to check */ | |
90 | ||
91 | TEST_VERIFY_EXIT (argc == 2 || argc == 5); | |
92 | ||
93 | if (restart) | |
94 | return handle_restart (atoi (argv[1])); | |
95 | ||
96 | char nteststr[INT_BUFSIZE_BOUND (int)]; | |
97 | ||
98 | char *spargv[10]; | |
99 | { | |
100 | int i = 0; | |
101 | for (; i < argc - 1; i++) | |
102 | spargv[i] = argv[i + 1]; | |
103 | spargv[i++] = (char *) "--direct"; | |
104 | spargv[i++] = (char *) "--restart"; | |
105 | spargv[i++] = nteststr; | |
106 | spargv[i] = NULL; | |
107 | } | |
108 | ||
109 | for (int i = 0; i < array_length (tests); i++) | |
110 | { | |
111 | snprintf (nteststr, sizeof nteststr, "%d", i); | |
112 | ||
113 | printf ("[%d] Spawned test for %s\n", i, tests[i].env); | |
114 | setenv ("GLIBC_TUNABLES", tests[i].env, 1); | |
115 | struct support_capture_subprocess result | |
116 | = support_capture_subprogram (spargv[0], spargv); | |
117 | support_capture_subprocess_check (&result, "tst-tunables-enable_secure", | |
118 | 0, sc_allow_stderr); | |
119 | support_capture_subprocess_free (&result); | |
120 | } | |
121 | ||
122 | return 0; | |
123 | } | |
124 | ||
125 | #define TEST_FUNCTION_ARGV do_test | |
126 | #include <support/test-driver.c> |