src/syscall.c

/* SPDX-License-Identifier: MIT */
#define _DEFAULT_SOURCE

/*
 * Will go away once libc support is there
 */
#include <unistd.h>
#include <sys/syscall.h>
#include <sys/uio.h>
#include "liburing/compat.h"
#include "liburing/io_uring.h"
#include "syscall.h"

#ifdef __alpha__
/*
 * alpha is the only exception, all other architectures
 * have common numbers for new system calls.
 */
# ifndef __NR_io_uring_setup
#  define __NR_io_uring_setup		535
# endif
# ifndef __NR_io_uring_enter
#  define __NR_io_uring_enter		536
# endif
# ifndef __NR_io_uring_register
#  define __NR_io_uring_register	537
# endif
#else /* !__alpha__ */
# ifndef __NR_io_uring_setup
#  define __NR_io_uring_setup		425
# endif
# ifndef __NR_io_uring_enter
#  define __NR_io_uring_enter		426
# endif
# ifndef __NR_io_uring_register
#  define __NR_io_uring_register	427
# endif
#endif

int __sys_io_uring_register(int fd, unsigned opcode, const void *arg,
			    unsigned nr_args)
{
	return syscall(__NR_io_uring_register, fd, opcode, arg, nr_args);
}

int __sys_io_uring_setup(unsigned entries, struct io_uring_params *p)
{
	return syscall(__NR_io_uring_setup, entries, p);
}

int __sys_io_uring_enter2(int fd, unsigned to_submit, unsigned min_complete,
			 unsigned flags, sigset_t *sig, int sz)
{
	return syscall(__NR_io_uring_enter, fd, to_submit, min_complete,
			flags, sig, sz);
}

int __sys_io_uring_enter(int fd, unsigned to_submit, unsigned min_complete,
			 unsigned flags, sigset_t *sig)
{
	return __sys_io_uring_enter2(fd, to_submit, min_complete, flags, sig,
					_NSIG / 8);
}