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/* SPDX-License-Identifier: MIT */
/*
* Description: Test FUTEX2_PRIVATE with an active waiter being killed
*
*/
#include <errno.h>
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <linux/futex.h>
#include "liburing.h"
#include "helpers.h"
#ifndef FUTEX2_SIZE_U32
#define FUTEX2_SIZE_U32 0x02
#endif
#ifndef FUTEX2_PRIVATE
#define FUTEX2_PRIVATE 128
#endif
static int do_child(int ring_flags, int async, int vectored)
{
struct io_uring_params p = { .flags = ring_flags, };
struct io_uring_sqe *sqe;
struct io_uring ring;
struct futex_waitv fw = { };
unsigned int *futex;
int ret;
ret = t_create_ring_params(16, &ring, &p);
if (ret) {
if (ret == T_SETUP_SKIP)
return T_EXIT_SKIP;
fprintf(stderr, "ring setup failed\n");
return T_EXIT_FAIL;
}
futex = malloc(sizeof(*futex));
*futex = 0;
fw.uaddr = (unsigned long) futex;
fw.flags = FUTEX2_SIZE_U32|FUTEX2_PRIVATE;
sqe = io_uring_get_sqe(&ring);
if (!vectored)
io_uring_prep_futex_wait(sqe, futex, 0, FUTEX_BITSET_MATCH_ANY,
FUTEX2_SIZE_U32|FUTEX2_PRIVATE, 0);
else
io_uring_prep_futex_waitv(sqe, &fw, 1, 0);
if (async)
sqe->flags |= IOSQE_ASYNC;
io_uring_submit(&ring);
return T_EXIT_PASS;
}
static int test(int sqpoll, int async, int vectored)
{
int status, ring_flags = 0;
pid_t pid;
if (sqpoll)
ring_flags |= IORING_SETUP_SQPOLL;
pid = fork();
if (pid < 0) {
perror("fork");
return T_EXIT_FAIL;
} else if (!pid) {
exit(do_child(ring_flags, async, vectored));
}
usleep(10000);
kill(pid, 9);
waitpid(pid, &status, 0);
return T_EXIT_PASS;
}
int main(int argc, char *argv[])
{
int ret;
ret = test(0, 0, 0);
if (ret == T_EXIT_FAIL) {
fprintf(stderr, "test 0 0 0 failed\n");
return T_EXIT_FAIL;
} else if (ret == T_EXIT_SKIP) {
return T_EXIT_SKIP;
}
ret = test(0, 1, 0);
if (ret == T_EXIT_FAIL) {
fprintf(stderr, "test 0 1 0 failed\n");
return T_EXIT_FAIL;
}
ret = test(0, 0, 1);
if (ret == T_EXIT_FAIL) {
fprintf(stderr, "test 0 0 1 failed\n");
return T_EXIT_FAIL;
}
ret = test(0, 1, 1);
if (ret == T_EXIT_FAIL) {
fprintf(stderr, "test 0 1 1 failed\n");
return T_EXIT_FAIL;
}
ret = test(IORING_SETUP_SQPOLL, 0, 0);
if (ret == T_EXIT_FAIL) {
fprintf(stderr, "test SQPOLL 0 0 failed\n");
return T_EXIT_FAIL;
}
ret = test(IORING_SETUP_SQPOLL, 1, 0);
if (ret == T_EXIT_FAIL) {
fprintf(stderr, "test SQPOLL 1 0 failed\n");
return T_EXIT_FAIL;
}
ret = test(IORING_SETUP_SQPOLL, 0, 1);
if (ret == T_EXIT_FAIL) {
fprintf(stderr, "test SQPOLL 0 1 failed\n");
return T_EXIT_FAIL;
}
ret = test(IORING_SETUP_SQPOLL, 1, 1);
if (ret == T_EXIT_FAIL) {
fprintf(stderr, "test SQPOLL 1 1 failed\n");
return T_EXIT_FAIL;
}
return T_EXIT_PASS;
}
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