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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* futex_waitv() test by André Almeida <andrealmeid@collabora.com>
*
* Copyright 2021 Collabora Ltd.
*/
#include <errno.h>
#include <error.h>
#include <getopt.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <pthread.h>
#include <stdint.h>
#include <sys/shm.h>
#include "futextest.h"
#include "futex2test.h"
#include "kselftest_harness.h"
#define WAKE_WAIT_US 10000
#define NR_FUTEXES 30
static struct futex_waitv waitv[NR_FUTEXES];
u_int32_t futexes[NR_FUTEXES] = {0};
void *waiterfn(void *arg)
{
struct __test_metadata *_metadata = (struct __test_metadata *)arg;
struct timespec to;
int res;
/* setting absolute timeout for futex2 */
ASSERT_EQ(clock_gettime(CLOCK_MONOTONIC, &to), 0)
TH_LOG("gettime64 failed");
to.tv_sec++;
res = futex_waitv(waitv, NR_FUTEXES, 0, &to, CLOCK_MONOTONIC);
if (res < 0) {
EXPECT_EQ(res, NR_FUTEXES - 1)
TH_LOG("futex_waitv failed: %s", strerror(errno));
} else {
EXPECT_EQ(res, NR_FUTEXES - 1)
TH_LOG("futex_waitv returned %d, expected %d", res, NR_FUTEXES - 1);
}
return NULL;
}
TEST(private_waitv)
{
pthread_t waiter;
int res, i;
if (!is_futex_waitv_supported())
SKIP(return, "futex_waitv syscall not supported");
for (i = 0; i < NR_FUTEXES; i++) {
waitv[i].uaddr = (uintptr_t)&futexes[i];
waitv[i].flags = FUTEX_32 | FUTEX_PRIVATE_FLAG;
waitv[i].val = 0;
waitv[i].__reserved = 0;
}
/* Private waitv */
ASSERT_EQ(pthread_create(&waiter, NULL, waiterfn, _metadata), 0)
TH_LOG("pthread_create failed");
usleep(WAKE_WAIT_US);
res = futex_wake(u64_to_ptr(waitv[NR_FUTEXES - 1].uaddr), 1, FUTEX_PRIVATE_FLAG);
EXPECT_EQ(res, 1)
TH_LOG("futex_wake private returned: %d %s", res, res < 0 ? strerror(errno) : "");
}
TEST(shared_waitv)
{
pthread_t waiter;
int res, i;
if (!is_futex_waitv_supported())
SKIP(return, "futex_waitv syscall not supported");
/* Shared waitv */
for (i = 0; i < NR_FUTEXES; i++) {
int shm_id = shmget(IPC_PRIVATE, 4096, IPC_CREAT | 0666);
if (shm_id < 0) {
if (errno == ENOSYS)
SKIP(return, "shmget syscall not supported");
ASSERT_GE(shm_id, 0)
TH_LOG("shmget failed");
}
unsigned int *shared_data = shmat(shm_id, NULL, 0);
*shared_data = 0;
waitv[i].uaddr = (uintptr_t)shared_data;
waitv[i].flags = FUTEX_32;
waitv[i].val = 0;
waitv[i].__reserved = 0;
}
ASSERT_EQ(pthread_create(&waiter, NULL, waiterfn, _metadata), 0)
TH_LOG("pthread_create failed");
usleep(WAKE_WAIT_US);
res = futex_wake(u64_to_ptr(waitv[NR_FUTEXES - 1].uaddr), 1, 0);
EXPECT_EQ(res, 1)
TH_LOG("futex_wake shared returned: %d %s", res, res < 0 ? strerror(errno) : "");
for (i = 0; i < NR_FUTEXES; i++)
shmdt(u64_to_ptr(waitv[i].uaddr));
}
TEST(invalid_flag)
{
struct timespec to;
int res;
if (!is_futex_waitv_supported())
SKIP(return, "futex_waitv syscall not supported");
/* Testing a waiter without FUTEX_32 flag */
waitv[0].flags = FUTEX_PRIVATE_FLAG;
ASSERT_EQ(clock_gettime(CLOCK_MONOTONIC, &to), 0)
TH_LOG("gettime64 failed");
to.tv_sec++;
res = futex_waitv(waitv, NR_FUTEXES, 0, &to, CLOCK_MONOTONIC);
EXPECT_EQ(res, -1)
TH_LOG("futex_waitv returned unexpected result: %d", res);
if (res == -1) {
EXPECT_EQ(errno, EINVAL)
TH_LOG("futex_waitv returned unexpected errno: %d", errno);
}
}
TEST(unaligned_address)
{
struct timespec to;
int res;
if (!is_futex_waitv_supported())
SKIP(return, "futex_waitv syscall not supported");
/* Testing a waiter with an unaligned address */
waitv[0].flags = FUTEX_PRIVATE_FLAG | FUTEX_32;
waitv[0].uaddr = 1;
ASSERT_EQ(clock_gettime(CLOCK_MONOTONIC, &to), 0)
TH_LOG("gettime64 failed");
to.tv_sec++;
res = futex_waitv(waitv, NR_FUTEXES, 0, &to, CLOCK_MONOTONIC);
EXPECT_EQ(res, -1)
TH_LOG("futex_waitv returned unexpected result: %d", res);
if (res == -1) {
EXPECT_EQ(errno, EINVAL)
TH_LOG("futex_waitv returned unexpected errno: %d", errno);
}
}
TEST(null_address)
{
struct timespec to;
int res;
if (!is_futex_waitv_supported())
SKIP(return, "futex_waitv syscall not supported");
/* Testing a NULL address for waiters.uaddr */
waitv[0].uaddr = 0x00000000;
ASSERT_EQ(clock_gettime(CLOCK_MONOTONIC, &to), 0)
TH_LOG("gettime64 failed");
to.tv_sec++;
res = futex_waitv(waitv, NR_FUTEXES, 0, &to, CLOCK_MONOTONIC);
EXPECT_EQ(res, -1)
TH_LOG("futex_waitv returned unexpected result: %d", res);
if (res == -1) {
EXPECT_EQ(errno, EINVAL)
TH_LOG("futex_waitv returned unexpected errno: %d", errno);
}
/* Testing a NULL address for *waiters */
ASSERT_EQ(clock_gettime(CLOCK_MONOTONIC, &to), 0)
TH_LOG("gettime64 failed");
to.tv_sec++;
res = futex_waitv(NULL, NR_FUTEXES, 0, &to, CLOCK_MONOTONIC);
EXPECT_EQ(res, -1)
TH_LOG("futex_waitv returned unexpected result: %d", res);
if (res == -1) {
EXPECT_EQ(errno, EINVAL)
TH_LOG("futex_waitv returned unexpected errno: %d", errno);
}
}
TEST(invalid_clockid)
{
struct timespec to;
int res;
if (!is_futex_waitv_supported())
SKIP(return, "futex_waitv syscall not supported");
/* Testing an invalid clockid */
ASSERT_EQ(clock_gettime(CLOCK_MONOTONIC, &to), 0)
TH_LOG("gettime64 failed");
to.tv_sec++;
res = futex_waitv(NULL, NR_FUTEXES, 0, &to, CLOCK_TAI);
EXPECT_EQ(res, -1)
TH_LOG("futex_waitv returned unexpected result: %d", res);
if (res == -1) {
EXPECT_EQ(errno, EINVAL)
TH_LOG("futex_waitv returned unexpected errno: %d", errno);
}
}
TEST_HARNESS_MAIN
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