io_ring 0.0.2

liburing wrapper
Documentation 
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/* SPDX-License-Identifier: MIT */

#ifndef LIBURING_ARCH_GENERIC_SYSCALL_H
#define LIBURING_ARCH_GENERIC_SYSCALL_H

#include <fcntl.h>

static inline int __sys_io_uring_register(unsigned int fd, unsigned int opcode,
					  const void *arg, unsigned int nr_args)
{
	int ret;
	ret = syscall(__NR_io_uring_register, fd, opcode, arg, nr_args);
	return (ret < 0) ? -errno : ret;
}

static inline int __sys_io_uring_setup(unsigned int entries,
				       struct io_uring_params *p)
{
	int ret;
	ret = syscall(__NR_io_uring_setup, entries, p);
	return (ret < 0) ? -errno : ret;
}

static inline int __sys_io_uring_enter2(unsigned int fd, unsigned int to_submit,
					unsigned int min_complete,
					unsigned int flags, sigset_t *sig,
					size_t sz)
{
	int ret;
	ret = syscall(__NR_io_uring_enter, fd, to_submit, min_complete, flags,
		      sig, sz);
	return (ret < 0) ? -errno : ret;
}

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

static inline int __sys_open(const char *pathname, int flags, mode_t mode)
{
	int ret;
	ret = open(pathname, flags, mode);
	return (ret < 0) ? -errno : ret;
}

static inline ssize_t __sys_read(int fd, void *buffer, size_t size)
{
	ssize_t ret;
	ret = read(fd, buffer, size);
	return (ret < 0) ? -errno : ret;
}

static inline void *__sys_mmap(void *addr, size_t length, int prot, int flags,
			       int fd, off_t offset)
{
	void *ret;
	ret = mmap(addr, length, prot, flags, fd, offset);
	return (ret == MAP_FAILED) ? ERR_PTR(-errno) : ret;
}

static inline int __sys_munmap(void *addr, size_t length)
{
	int ret;
	ret = munmap(addr, length);
	return (ret < 0) ? -errno : ret;
}

static inline int __sys_madvise(void *addr, size_t length, int advice)
{
	int ret;
	ret = madvise(addr, length, advice);
	return (ret < 0) ? -errno : ret;
}

static inline int __sys_getrlimit(int resource, struct rlimit *rlim)
{
	int ret;
	ret = getrlimit(resource, rlim);
	return (ret < 0) ? -errno : ret;
}

static inline int __sys_setrlimit(int resource, const struct rlimit *rlim)
{
	int ret;
	ret = setrlimit(resource, rlim);
	return (ret < 0) ? -errno : ret;
}

static inline int __sys_close(int fd)
{
	int ret;
	ret = close(fd);
	return (ret < 0) ? -errno : ret;
}

#endif /* #ifndef LIBURING_ARCH_GENERIC_SYSCALL_H */