1*37e2cd25SPatrick Mooney /*
2*37e2cd25SPatrick Mooney * This file and its contents are supplied under the terms of the
3*37e2cd25SPatrick Mooney * Common Development and Distribution License ("CDDL"), version 1.0.
4*37e2cd25SPatrick Mooney * You may only use this file in accordance with the terms of version
5*37e2cd25SPatrick Mooney * 1.0 of the CDDL.
6*37e2cd25SPatrick Mooney *
7*37e2cd25SPatrick Mooney * A full copy of the text of the CDDL should have accompanied this
8*37e2cd25SPatrick Mooney * source. A copy of the CDDL is also available via the Internet at
9*37e2cd25SPatrick Mooney * http://www.illumos.org/license/CDDL.
10*37e2cd25SPatrick Mooney */
11*37e2cd25SPatrick Mooney
12*37e2cd25SPatrick Mooney /*
13*37e2cd25SPatrick Mooney * Copyright 2022 Oxide Computer Company
14*37e2cd25SPatrick Mooney */
15*37e2cd25SPatrick Mooney
16*37e2cd25SPatrick Mooney #include <stdio.h>
17*37e2cd25SPatrick Mooney #include <unistd.h>
18*37e2cd25SPatrick Mooney #include <stdlib.h>
19*37e2cd25SPatrick Mooney #include <fcntl.h>
20*37e2cd25SPatrick Mooney #include <port.h>
21*37e2cd25SPatrick Mooney #include <err.h>
22*37e2cd25SPatrick Mooney #include <assert.h>
23*37e2cd25SPatrick Mooney #include <sys/types.h>
24*37e2cd25SPatrick Mooney #include <sys/stat.h>
25*37e2cd25SPatrick Mooney #include <sys/param.h>
26*37e2cd25SPatrick Mooney #include <sys/poll.h>
27*37e2cd25SPatrick Mooney #include <stdbool.h>
28*37e2cd25SPatrick Mooney
29*37e2cd25SPatrick Mooney static bool
has_event(int pfd)30*37e2cd25SPatrick Mooney has_event(int pfd)
31*37e2cd25SPatrick Mooney {
32*37e2cd25SPatrick Mooney port_event_t ev = { 0 };
33*37e2cd25SPatrick Mooney timespec_t ts = { 0 };
34*37e2cd25SPatrick Mooney
35*37e2cd25SPatrick Mooney /* Because of illumos 14912, more care needs to be taken here */
36*37e2cd25SPatrick Mooney int res = port_get(pfd, &ev, &ts);
37*37e2cd25SPatrick Mooney if (res != 0 || ev.portev_source == 0) {
38*37e2cd25SPatrick Mooney return (false);
39*37e2cd25SPatrick Mooney } else {
40*37e2cd25SPatrick Mooney return (true);
41*37e2cd25SPatrick Mooney }
42*37e2cd25SPatrick Mooney }
43*37e2cd25SPatrick Mooney
44*37e2cd25SPatrick Mooney int
main(int argc,char * argv[])45*37e2cd25SPatrick Mooney main(int argc, char *argv[])
46*37e2cd25SPatrick Mooney {
47*37e2cd25SPatrick Mooney int res;
48*37e2cd25SPatrick Mooney int pipes[2];
49*37e2cd25SPatrick Mooney
50*37e2cd25SPatrick Mooney res = pipe2(pipes, 0);
51*37e2cd25SPatrick Mooney assert(res == 0);
52*37e2cd25SPatrick Mooney
53*37e2cd25SPatrick Mooney int pfd = port_create();
54*37e2cd25SPatrick Mooney assert(pfd >= 0);
55*37e2cd25SPatrick Mooney
56*37e2cd25SPatrick Mooney res = port_associate(pfd, PORT_SOURCE_FD, (uintptr_t)pipes[1], POLLIN,
57*37e2cd25SPatrick Mooney NULL);
58*37e2cd25SPatrick Mooney assert(res == 0);
59*37e2cd25SPatrick Mooney
60*37e2cd25SPatrick Mooney if (has_event(pfd)) {
61*37e2cd25SPatrick Mooney errx(EXIT_FAILURE, "FAIL - unexpected early event");
62*37e2cd25SPatrick Mooney }
63*37e2cd25SPatrick Mooney
64*37e2cd25SPatrick Mooney char port_path[MAXPATHLEN];
65*37e2cd25SPatrick Mooney (void) sprintf(port_path, "/proc/%d/fd/%d", getpid(), pfd);
66*37e2cd25SPatrick Mooney
67*37e2cd25SPatrick Mooney /* incur the procfs FDINFO access */
68*37e2cd25SPatrick Mooney struct stat sbuf;
69*37e2cd25SPatrick Mooney res = lstat(port_path, &sbuf);
70*37e2cd25SPatrick Mooney assert(res == 0);
71*37e2cd25SPatrick Mooney
72*37e2cd25SPatrick Mooney /* write a byte to wake up the pipe */
73*37e2cd25SPatrick Mooney (void) write(pipes[0], port_path, 1);
74*37e2cd25SPatrick Mooney
75*37e2cd25SPatrick Mooney /*
76*37e2cd25SPatrick Mooney * Check to see that the FDINFO access did not detach our registration
77*37e2cd25SPatrick Mooney * for the event port.
78*37e2cd25SPatrick Mooney */
79*37e2cd25SPatrick Mooney if (!has_event(pfd)) {
80*37e2cd25SPatrick Mooney errx(EXIT_FAILURE, "FAIL - no event found");
81*37e2cd25SPatrick Mooney }
82*37e2cd25SPatrick Mooney
83*37e2cd25SPatrick Mooney (void) printf("PASS\n");
84*37e2cd25SPatrick Mooney return (EXIT_SUCCESS);
85*37e2cd25SPatrick Mooney }
86