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 2023 Oxide Computer Company
14 */
15
16
17 #include <stdlib.h>
18 #include <unistd.h>
19 #include <fcntl.h>
20
21 #include "common.h"
22
23 int
main(void)24 main(void)
25 {
26 int err;
27 ssize_t sz;
28 signalfd_siginfo_t info[3];
29
30 const int fd = test_basic_prep(0);
31
32 /* A too-small read should yield EINVAL */
33 sz = read(fd, info, sizeof (signalfd_siginfo_t) - 1);
34 err = errno;
35 if (sz != -1 || errno != EINVAL) {
36 test_fail("expected EINVAL for too-small read, "
37 "found res=%ld errno=%d", sz, err);
38 }
39
40 const int pid = getpid();
41
42 /* simple single read */
43 assert(kill(pid, SIGUSR1) == 0);
44 sz = read(fd, info, sizeof (signalfd_siginfo_t));
45 err = errno;
46 if (sz != sizeof (signalfd_siginfo_t)) {
47 test_fail("bad read result, found sz=%ld errno=%d", sz, err);
48 }
49 if (info[0].ssi_signo != SIGUSR1) {
50 test_fail("bad ssi_signo %d != %d", info[0].ssi_signo, SIGUSR1);
51 }
52
53 struct sigevent sigev = {
54 .sigev_notify = SIGEV_SIGNAL,
55 .sigev_signo = SIGALRM,
56 };
57 timer_t tid;
58 struct itimerspec its_1ms = {
59 .it_value = {
60 .tv_sec = 0,
61 .tv_nsec = MSEC2NSEC(1),
62 }
63 };
64
65 /* block for a single read: a SIGALRM 1ms in the future */
66 assert(timer_create(CLOCK_HIGHRES, &sigev, &tid) == 0);
67 assert(timer_settime(tid, 0, &its_1ms, NULL) == 0);
68 sz = read(fd, info, sizeof (signalfd_siginfo_t));
69 err = errno;
70 if (sz != sizeof (signalfd_siginfo_t)) {
71 test_fail("bad read result, found sz=%ld errno=%d", sz, err);
72 }
73 if (info[0].ssi_signo != SIGALRM) {
74 test_fail("bad ssi_signo %d != %d", info[0].ssi_signo, SIGALRM);
75 }
76
77 /*
78 * If we get a result during a read, we should not block until the
79 * entire buffer is full, but rather return what we have.
80 */
81 assert(kill(pid, SIGUSR1) == 0);
82 assert(kill(pid, SIGUSR2) == 0);
83 sz = read(fd, info, sizeof (info));
84 err = errno;
85 if (sz != (2 * sizeof (signalfd_siginfo_t))) {
86 test_fail("bad read result, found sz=%ld errno=%d", sz, err);
87 }
88 if (info[0].ssi_signo != SIGUSR1) {
89 test_fail("bad ssi_signo %d != %d", info[0].ssi_signo, SIGUSR1);
90 }
91 if (info[1].ssi_signo != SIGUSR2) {
92 test_fail("bad ssi_signo %d != %d", info[1].ssi_signo, SIGUSR2);
93 }
94
95 test_pass();
96 }
97