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/*
* Check decoding of epoll_ctl syscall.
*
* Copyright (c) 2016-2024 The strace developers.
* All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "tests.h"
#include "scno.h"
#include <inttypes.h>
#include <stdio.h>
#include <unistd.h>
#include <linux/eventpoll.h>
static long
invoke_syscall(unsigned long epfd, unsigned long op, unsigned long fd, void *ev)
{
return syscall(__NR_epoll_ctl, epfd, F8ILL_KULONG_MASK | op,
fd, (unsigned long) ev);
}
int
main(void)
{
TAIL_ALLOC_OBJECT_CONST_PTR(struct epoll_event, ev);
ev->events = EPOLLIN;
long rc = invoke_syscall(-1U, EPOLL_CTL_ADD, -2U, ev);
printf("epoll_ctl(-1, EPOLL_CTL_ADD, -2"
", {events=EPOLLIN, data=%#" PRI__x64 "}) = %s\n",
ev->data, sprintrc(rc));
rc = invoke_syscall(-3U, EPOLL_CTL_DEL, -4U, ev);
printf("epoll_ctl(-3, EPOLL_CTL_DEL, -4, %p) = %s\n",
ev, sprintrc(rc));
rc = invoke_syscall(-1UL, EPOLL_CTL_MOD, -16UL, 0);
printf("epoll_ctl(-1, EPOLL_CTL_MOD, -16, NULL) = %s\n",
sprintrc(rc));
puts("+++ exited with 0 +++");
return 0;
}
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