1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (C) 2015 Cyril Hrubis <[email protected]>
4 *
5 * Based on futextest (futext_wait_timeout.c and futex_wait_ewouldblock.c)
6 * written by Darren Hart <[email protected]>
7 * Gowrishankar <[email protected]>
8 *
9 * 1. Block on a futex and wait for timeout.
10 * 2. Test if FUTEX_WAIT op returns -EWOULDBLOCK if the futex value differs
11 * from the expected one.
12 */
13
14 #include "futextest.h"
15
16 struct testcase {
17 futex_t *f_addr;
18 futex_t f_val;
19 int opflags;
20 int exp_errno;
21 };
22
23 static futex_t futex = FUTEX_INITIALIZER;
24
25 static struct testcase testcases[] = {
26 {&futex, FUTEX_INITIALIZER, 0, ETIMEDOUT},
27 {&futex, FUTEX_INITIALIZER+1, 0, EWOULDBLOCK},
28 {&futex, FUTEX_INITIALIZER, FUTEX_PRIVATE_FLAG, ETIMEDOUT},
29 {&futex, FUTEX_INITIALIZER+1, FUTEX_PRIVATE_FLAG, EWOULDBLOCK},
30 };
31
32 static struct futex_test_variants variants[] = {
33 #if (__NR_futex != __LTP__NR_INVALID_SYSCALL)
34 { .fntype = FUTEX_FN_FUTEX, .tstype = TST_KERN_OLD_TIMESPEC, .desc = "syscall with old kernel spec"},
35 #endif
36
37 #if (__NR_futex_time64 != __LTP__NR_INVALID_SYSCALL)
38 { .fntype = FUTEX_FN_FUTEX64, .tstype = TST_KERN_TIMESPEC, .desc = "syscall time64 with kernel spec"},
39 #endif
40 };
41
run(unsigned int n)42 static void run(unsigned int n)
43 {
44 struct futex_test_variants *tv = &variants[tst_variant];
45 struct testcase *tc = &testcases[n];
46 struct tst_ts to = tst_ts_from_ns(tv->tstype, 10000);
47 int res;
48
49 res = futex_wait(tv->fntype, tc->f_addr, tc->f_val, &to, tc->opflags);
50
51 if (res != -1) {
52 tst_res(TFAIL, "futex_wait() succeeded unexpectedly");
53 return;
54 }
55
56 if (errno != tc->exp_errno) {
57 tst_res(TFAIL | TERRNO, "futex_wait() failed with incorrect error, expected errno=%s",
58 tst_strerrno(tc->exp_errno));
59 return;
60 }
61
62 tst_res(TPASS | TERRNO, "futex_wait() passed");
63 }
64
setup(void)65 static void setup(void)
66 {
67 struct futex_test_variants *tv = &variants[tst_variant];
68
69 tst_res(TINFO, "Testing variant: %s", tv->desc);
70 futex_supported_by_kernel(tv->fntype);
71 }
72
73 static struct tst_test test = {
74 .setup = setup,
75 .test = run,
76 .tcnt = ARRAY_SIZE(testcases),
77 .test_variants = ARRAY_SIZE(variants),
78 };
79