src/syscall.h

/* SPDX-License-Identifier: MIT */
#ifndef LIBURING_SYSCALL_H
#define LIBURING_SYSCALL_H

#include <errno.h>
#include <signal.h>
#include <stdint.h>
#include <unistd.h>
#include <stdbool.h>
#include <sys/mman.h>
#include <sys/syscall.h>
#include <sys/resource.h>
#include <liburing.h>

/*
 * Don't put this below the #include "arch/$arch/syscall.h", that
 * file may need it.
 */
struct io_uring_params;

static inline void *ERR_PTR(intptr_t n)
{
	return (void *) n;
}

static inline int PTR_ERR(const void *ptr)
{
	return (int) (intptr_t) ptr;
}

static inline bool IS_ERR(const void *ptr)
{
	return uring_unlikely((uintptr_t) ptr >= (uintptr_t) -4095UL);
}

#if defined(__x86_64__) || defined(__i386__)
#include "arch/x86/syscall.h"
#elif defined(__aarch64__)
#include "arch/aarch64/syscall.h"
#elif defined(__riscv) && __riscv_xlen == 64
#include "arch/riscv64/syscall.h"
#else
/*
 * We don't have native syscall wrappers
 * for this arch. Must use libc!
 */
#ifdef CONFIG_NOLIBC
	#error "This arch doesn't support building liburing without libc"
#endif
/* libc syscall wrappers. */
#include "arch/generic/syscall.h"
#endif
#endif