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