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/*
* Check decoding of futex_waitv syscall.
*
* Copyright (c) 2015-2024 Dmitry V. Levin <ldv@strace.io>
* All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "tests.h"
#include "scno.h"
#include "kernel_timespec.h"
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <unistd.h>
#include <linux/futex.h>
static const char *errstr;
static long
k_futex_waitv(const void *const waiters,
const unsigned int nr_futexes,
const unsigned int flags,
const void *const timeout,
const unsigned int clockid)
{
const kernel_ulong_t fill = (kernel_ulong_t) 0xdefaced00000000ULL;
const kernel_ulong_t bad = (kernel_ulong_t) 0xbadc0dedbadc0dedULL;
const kernel_ulong_t arg1 = (uintptr_t) waiters;
const kernel_ulong_t arg2 = fill | nr_futexes;
const kernel_ulong_t arg3 = fill | flags;
const kernel_ulong_t arg4 = (uintptr_t) timeout;
const kernel_ulong_t arg5 = fill | clockid;
const long rc = syscall(__NR_futex_waitv,
arg1, arg2, arg3, arg4, arg5, bad);
errstr = sprintrc(rc);
return rc;
}
int
main(void)
{
TAIL_ALLOC_OBJECT_CONST_PTR(uint32_t, futex);
TAIL_ALLOC_OBJECT_CONST_PTR(struct futex_waitv, waiter);
TAIL_ALLOC_OBJECT_CONST_PTR(kernel_timespec64_t, ts);
ts->tv_sec = 1;
ts->tv_nsec = 2;
k_futex_waitv(0, 1, -1U, 0, 1);
printf("futex_waitv(NULL, 1, %#x, NULL, CLOCK_MONOTONIC) = %s\n",
-1U, errstr);
k_futex_waitv(waiter + 1, 0, 1, ts + 1, -1U);
printf("futex_waitv([], 0, %#x, %p, %#x /* CLOCK_??? */) = %s\n",
1, ts + 1, -1U, errstr);
k_futex_waitv((void *) waiter + 1, 1, 0, ts, 0);
printf("futex_waitv(%p, 1, 0, {tv_sec=1, tv_nsec=2}, CLOCK_REALTIME)"
" = %s\n",
(void *) waiter + 1, errstr);
waiter->uaddr = 0;
k_futex_waitv(waiter, 1, 0, 0, 1);
printf("futex_waitv([{val=%#llx, uaddr=NULL, flags=%s|%#x"
", __reserved=%#x}], 1, 0, NULL, CLOCK_MONOTONIC) = %s\n",
(unsigned long long) waiter->val,
"FUTEX2_SIZE_U64|FUTEX2_NUMA|FUTEX2_PRIVATE",
waiter->flags & ~(FUTEX2_SIZE_U64|FUTEX2_NUMA|FUTEX2_PRIVATE),
waiter->__reserved, errstr);
waiter->val = 0xdeadbeeffacefeedULL;
waiter->uaddr = -1ULL;
waiter->flags = 0;
waiter->__reserved = 0;
k_futex_waitv(waiter, 1, 0, 0, 2);
printf("futex_waitv([{val=%#llx, uaddr=%#llx, flags=FUTEX2_SIZE_U8}]"
", 1, 0, NULL, CLOCK_PROCESS_CPUTIME_ID) = %s\n",
(unsigned long long) waiter->val,
(unsigned long long) waiter->uaddr,
errstr);
waiter->val = 0;
waiter->uaddr = (uintptr_t) futex;
waiter->flags = FUTEX2_PRIVATE;
k_futex_waitv(waiter, 1, 0, 0, 0);
printf("futex_waitv([{val=0, uaddr=%p, flags=%s}], 1, 0, NULL"
", CLOCK_REALTIME) = %s\n",
futex, "FUTEX2_SIZE_U8|FUTEX2_PRIVATE", errstr);
waiter->flags = FUTEX2_SIZE_U32;
k_futex_waitv(waiter, 2, 0, 0, 1);
printf("futex_waitv([{val=0, uaddr=%p, flags=%s}, ... /* %p */], 2, 0, NULL"
", CLOCK_MONOTONIC) = %s\n",
futex, "FUTEX2_SIZE_U32", waiter + 1, errstr);
waiter->flags = FUTEX2_SIZE_U32|FUTEX2_PRIVATE;
k_futex_waitv(waiter, 1, 0, ts, 1);
printf("futex_waitv([{val=0, uaddr=%p, flags=%s}], 1, 0"
", {tv_sec=1, tv_nsec=2}, CLOCK_MONOTONIC) = %s\n",
futex, "FUTEX2_SIZE_U32|FUTEX2_PRIVATE", errstr);
unsigned int nr = FUTEX_WAITV_MAX + 1;
TAIL_ALLOC_OBJECT_CONST_ARR(uint32_t, futexes, nr);
TAIL_ALLOC_OBJECT_CONST_ARR(struct futex_waitv, waiters, nr);
for (unsigned int i = 0; i < nr; ++i) {
futexes[i] = i;
waiters[i].val = i;
waiters[i].uaddr = (uintptr_t) &futexes[i];
waiters[i].flags = FUTEX2_SIZE_U32|FUTEX2_PRIVATE;
waiters[i].__reserved = 0;
}
k_futex_waitv(waiters, nr, 0, ts, 1);
printf("futex_waitv([");
for (unsigned int i = 0; i < FUTEX_WAITV_MAX; ++i) {
printf("%s{val=%#x, uaddr=%p, flags=%s}",
i ? ", " : "",
i, &futexes[i], "FUTEX2_SIZE_U32|FUTEX2_PRIVATE");
}
printf(", ...], %u, 0, {tv_sec=1, tv_nsec=2}, CLOCK_MONOTONIC) = %s\n",
nr, errstr);
nr = FUTEX_WAITV_MAX;
k_futex_waitv(waiters + 1, nr, 0, ts, 1);
printf("futex_waitv([");
for (unsigned int i = 0; i < FUTEX_WAITV_MAX; ++i) {
printf("%s{val=%#x, uaddr=%p, flags=%s}",
i ? ", " : "",
i + 1, &futexes[i + 1], "FUTEX2_SIZE_U32|FUTEX2_PRIVATE");
}
printf("], %u, 0, {tv_sec=1, tv_nsec=2}, CLOCK_MONOTONIC) = %s\n",
nr, errstr);
puts("+++ exited with 0 +++");
return 0;
}
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