1*27b03b36SApple OSS Distributions #include <stdlib.h>
2*27b03b36SApple OSS Distributions
3*27b03b36SApple OSS Distributions #include <pthread.h>
4*27b03b36SApple OSS Distributions #include <sys/kern_control.h>
5*27b03b36SApple OSS Distributions #include <sys/socket.h>
6*27b03b36SApple OSS Distributions #include <sys/sys_domain.h>
7*27b03b36SApple OSS Distributions #include <unistd.h>
8*27b03b36SApple OSS Distributions
9*27b03b36SApple OSS Distributions #include <darwintest.h>
10*27b03b36SApple OSS Distributions
11*27b03b36SApple OSS Distributions /* we should win the race in this window: */
12*27b03b36SApple OSS Distributions #define NTRIES 200000
13*27b03b36SApple OSS Distributions
14*27b03b36SApple OSS Distributions static void *
connect_race(void * data)15*27b03b36SApple OSS Distributions connect_race(void *data)
16*27b03b36SApple OSS Distributions {
17*27b03b36SApple OSS Distributions int *ps = data;
18*27b03b36SApple OSS Distributions struct sockaddr_ctl sc = {
19*27b03b36SApple OSS Distributions .sc_id = 1 /* com.apple.flow-divert */
20*27b03b36SApple OSS Distributions };
21*27b03b36SApple OSS Distributions int n;
22*27b03b36SApple OSS Distributions
23*27b03b36SApple OSS Distributions for (n = 0; n < NTRIES; ++n) {
24*27b03b36SApple OSS Distributions connect(*ps, (const struct sockaddr *)&sc, sizeof(sc));
25*27b03b36SApple OSS Distributions }
26*27b03b36SApple OSS Distributions
27*27b03b36SApple OSS Distributions return NULL;
28*27b03b36SApple OSS Distributions }
29*27b03b36SApple OSS Distributions
30*27b03b36SApple OSS Distributions T_DECL(flow_div_doubleconnect_55917185, "Bad error path in double-connect for flow_divert_kctl_connect")
31*27b03b36SApple OSS Distributions {
32*27b03b36SApple OSS Distributions int s = -1;
33*27b03b36SApple OSS Distributions int tmp_s;
34*27b03b36SApple OSS Distributions struct sockaddr_ctl sc = {
35*27b03b36SApple OSS Distributions .sc_id = 1 /* com.apple.flow-divert */
36*27b03b36SApple OSS Distributions };
37*27b03b36SApple OSS Distributions pthread_t t;
38*27b03b36SApple OSS Distributions int n;
39*27b03b36SApple OSS Distributions
40*27b03b36SApple OSS Distributions T_SETUPBEGIN;
41*27b03b36SApple OSS Distributions T_ASSERT_POSIX_ZERO(pthread_create(&t, NULL, connect_race, &s), NULL);
42*27b03b36SApple OSS Distributions T_SETUPEND;
43*27b03b36SApple OSS Distributions
44*27b03b36SApple OSS Distributions for (n = 0; n < NTRIES; ++n) {
45*27b03b36SApple OSS Distributions T_ASSERT_POSIX_SUCCESS(tmp_s = socket(AF_SYSTEM, SOCK_DGRAM, SYSPROTO_CONTROL), NULL);
46*27b03b36SApple OSS Distributions
47*27b03b36SApple OSS Distributions /*
48*27b03b36SApple OSS Distributions * this bind will fail, but that's ok because it initialises
49*27b03b36SApple OSS Distributions * kctl:
50*27b03b36SApple OSS Distributions */
51*27b03b36SApple OSS Distributions bind(tmp_s, (const struct sockaddr *)&sc, sizeof(sc));
52*27b03b36SApple OSS Distributions
53*27b03b36SApple OSS Distributions /* this is what we're racing the other thread for: */
54*27b03b36SApple OSS Distributions s = tmp_s;
55*27b03b36SApple OSS Distributions connect(s, (const struct sockaddr *)&sc, sizeof(sc));
56*27b03b36SApple OSS Distributions
57*27b03b36SApple OSS Distributions T_ASSERT_POSIX_SUCCESS(close(s), NULL);
58*27b03b36SApple OSS Distributions s = -1;
59*27b03b36SApple OSS Distributions }
60*27b03b36SApple OSS Distributions
61*27b03b36SApple OSS Distributions T_ASSERT_POSIX_ZERO(pthread_join(t, NULL), NULL);
62*27b03b36SApple OSS Distributions T_PASS("flow_divert_kctl_connect race didn't trigger panic");
63*27b03b36SApple OSS Distributions }
64