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/*
* Check decoding of io_uring_enter syscall.
*
* Copyright (c) 2019-2021 Dmitry V. Levin <ldv@strace.io>
* Copyright (c) 2019-2024 The strace developers.
* All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "tests.h"
#include "scno.h"
#include <fcntl.h>
#include <signal.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
static const char *errstr;
static long
sys_io_uring_enter(unsigned int fd, unsigned int to_submit,
unsigned int min_complete, unsigned int flags,
const void *sigset_addr, kernel_ulong_t sigset_size)
{
kernel_ulong_t fill = (kernel_ulong_t) 0xdefaced00000000ULL;
kernel_ulong_t arg1 = fill | fd;
kernel_ulong_t arg2 = fill | to_submit;
kernel_ulong_t arg3 = fill | min_complete;
kernel_ulong_t arg4 = fill | flags;
kernel_ulong_t arg5 = (unsigned long) sigset_addr;
kernel_ulong_t arg6 = sigset_size;
long rc = syscall(__NR_io_uring_enter,
arg1, arg2, arg3, arg4, arg5, arg6);
errstr = sprintrc(rc);
return rc;
}
int
main(void)
{
static const char path[] = "/dev/null";
skip_if_unavailable("/proc/self/fd/");
int fd = open(path, O_RDONLY);
if (fd < 0)
perror_msg_and_fail("open: %s", path);
const unsigned int size = get_sigset_size();
void *const sigmask = tail_alloc(size);
sigset_t mask;
memset(&mask, -1, sizeof(mask));
sigdelset(&mask, SIGHUP);
sigdelset(&mask, SIGKILL);
sigdelset(&mask, SIGSTOP);
memcpy(sigmask, &mask, size);
const unsigned int to_submit = 0xdeadbeef;
const unsigned int min_complete = 0xcafef00d;
sys_io_uring_enter(fd, to_submit, min_complete, -1U, sigmask, size);
printf("io_uring_enter(%u<%s>, %u, %u"
", IORING_ENTER_GETEVENTS|IORING_ENTER_SQ_WAKEUP"
"|IORING_ENTER_SQ_WAIT|IORING_ENTER_EXT_ARG"
"|IORING_ENTER_REGISTERED_RING"
"|IORING_ENTER_ABS_TIMER"
"|IORING_ENTER_EXT_ARG_REG"
"|%#x, %s, %u) = %s\n",
fd, path, to_submit, min_complete, -1U - 127U,
"~[HUP KILL STOP]", size, errstr);
puts("+++ exited with 0 +++");
return 0;
}
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