1*4d495c6eSApple OSS Distributions #include <unistd.h>
2*4d495c6eSApple OSS Distributions #include <stdio.h>
3*4d495c6eSApple OSS Distributions
4*4d495c6eSApple OSS Distributions #include <darwintest.h>
5*4d495c6eSApple OSS Distributions #include <darwintest_utils.h>
6*4d495c6eSApple OSS Distributions
7*4d495c6eSApple OSS Distributions T_GLOBAL_META(
8*4d495c6eSApple OSS Distributions /*
9*4d495c6eSApple OSS Distributions * We're going to corrupt shared library text, so don't
10*4d495c6eSApple OSS Distributions * run with other tests.
11*4d495c6eSApple OSS Distributions */
12*4d495c6eSApple OSS Distributions T_META_RUN_CONCURRENTLY(false),
13*4d495c6eSApple OSS Distributions T_META_REQUIRES_SYSCTL_NE("kern.page_protection_type", 2)
14*4d495c6eSApple OSS Distributions );
15*4d495c6eSApple OSS Distributions
16*4d495c6eSApple OSS Distributions /*
17*4d495c6eSApple OSS Distributions * No system(3c) on watchOS, so provide our own.
18*4d495c6eSApple OSS Distributions * returns -1 if fails to run
19*4d495c6eSApple OSS Distributions * returns 0 if process exits normally.
20*4d495c6eSApple OSS Distributions * returns +n if process exits due to signal N
21*4d495c6eSApple OSS Distributions */
22*4d495c6eSApple OSS Distributions static int
my_system(const char * command)23*4d495c6eSApple OSS Distributions my_system(const char *command)
24*4d495c6eSApple OSS Distributions {
25*4d495c6eSApple OSS Distributions pid_t pid;
26*4d495c6eSApple OSS Distributions int status = 0;
27*4d495c6eSApple OSS Distributions int signal = 0;
28*4d495c6eSApple OSS Distributions int err;
29*4d495c6eSApple OSS Distributions const char *argv[] = {
30*4d495c6eSApple OSS Distributions "/bin/sh",
31*4d495c6eSApple OSS Distributions "-c",
32*4d495c6eSApple OSS Distributions command,
33*4d495c6eSApple OSS Distributions NULL
34*4d495c6eSApple OSS Distributions };
35*4d495c6eSApple OSS Distributions
36*4d495c6eSApple OSS Distributions if (dt_launch_tool(&pid, (char **)(void *)argv, FALSE, NULL, NULL)) {
37*4d495c6eSApple OSS Distributions return -1;
38*4d495c6eSApple OSS Distributions }
39*4d495c6eSApple OSS Distributions
40*4d495c6eSApple OSS Distributions err = dt_waitpid(pid, &status, &signal, 30);
41*4d495c6eSApple OSS Distributions if (err) {
42*4d495c6eSApple OSS Distributions return 0;
43*4d495c6eSApple OSS Distributions }
44*4d495c6eSApple OSS Distributions
45*4d495c6eSApple OSS Distributions return signal;
46*4d495c6eSApple OSS Distributions }
47*4d495c6eSApple OSS Distributions
48*4d495c6eSApple OSS Distributions
49*4d495c6eSApple OSS Distributions /*
50*4d495c6eSApple OSS Distributions * The tests are run in the following order:
51*4d495c6eSApple OSS Distributions *
52*4d495c6eSApple OSS Distributions * - call foo
53*4d495c6eSApple OSS Distributions * - corrupt foo, then call foo
54*4d495c6eSApple OSS Distributions * - call foo
55*4d495c6eSApple OSS Distributions *
56*4d495c6eSApple OSS Distributions * - call atan
57*4d495c6eSApple OSS Distributions * - corrupt atan, then call atan
58*4d495c6eSApple OSS Distributions * - call atan
59*4d495c6eSApple OSS Distributions *
60*4d495c6eSApple OSS Distributions * The first and last of each should exit normally. The middle one should exit with SIGILL.
61*4d495c6eSApple OSS Distributions *
62*4d495c6eSApple OSS Distributions * atan() was picked as a shared region function that isn't likely used by any normal daemons.
63*4d495c6eSApple OSS Distributions */
64*4d495c6eSApple OSS Distributions T_DECL(text_corruption_recovery, "test detection/recovery of text corruption",
65*4d495c6eSApple OSS Distributions T_META_IGNORECRASHES(".*text_corruption_helper.*"),
66*4d495c6eSApple OSS Distributions T_META_ASROOT(true))
67*4d495c6eSApple OSS Distributions {
68*4d495c6eSApple OSS Distributions int ret;
69*4d495c6eSApple OSS Distributions
70*4d495c6eSApple OSS Distributions ret = my_system("./text_corruption_helper foo");
71*4d495c6eSApple OSS Distributions T_QUIET; T_ASSERT_EQ(ret, 0, "First call of foo");
72*4d495c6eSApple OSS Distributions
73*4d495c6eSApple OSS Distributions ret = my_system("./text_corruption_helper Xfoo");
74*4d495c6eSApple OSS Distributions T_QUIET; T_ASSERT_EQ(ret, SIGILL, "Call of corrupted foo");
75*4d495c6eSApple OSS Distributions
76*4d495c6eSApple OSS Distributions ret = my_system("./text_corruption_helper foo");
77*4d495c6eSApple OSS Distributions T_QUIET; T_ASSERT_EQ(ret, 0, "Fixed call of foo");
78*4d495c6eSApple OSS Distributions
79*4d495c6eSApple OSS Distributions ret = my_system("./text_corruption_helper atan");
80*4d495c6eSApple OSS Distributions T_QUIET; T_ASSERT_EQ(ret, 0, "First call of atan");
81*4d495c6eSApple OSS Distributions
82*4d495c6eSApple OSS Distributions ret = my_system("./text_corruption_helper Xatan");
83*4d495c6eSApple OSS Distributions T_QUIET; T_ASSERT_EQ(ret, SIGILL, "Call of corrupted atan");
84*4d495c6eSApple OSS Distributions
85*4d495c6eSApple OSS Distributions ret = my_system("./text_corruption_helper atan");
86*4d495c6eSApple OSS Distributions T_QUIET; T_ASSERT_EQ(ret, 0, "Fixed call of atan");
87*4d495c6eSApple OSS Distributions }
88