zuf_call.h

/* SPDX-License-Identifier: BSD-3-Clause */
/*
 * zuf_call.h - C Wrappers over the ZUFS_IOCTL Api
 *
 * Copyright (c) 2018 NetApp, Inc. All rights reserved.
 *
 * See module.c for LICENSE details.
 *
 * Authors:
 *	Boaz Harrosh <boazh@netapp.com>
 */

#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif

#include <fcntl.h>
#include <sys/ioctl.h>

#include "zus.h"

/* Just a wraper for the commom unexpected print */
static inline
int __ioctl(int fd, ulong zu_vect, struct zufs_ioc_hdr *hdr, const char *msg)
{
	int ret;

	ret = ioctl(fd, zu_vect, hdr);
	if (ret) {
		ERROR("Unexpected ioctl => %d errno=%d zu_n=%lx zu_s=%s hdr=%d\n",
		      ret, errno, zu_vect, msg, hdr->err);
		return -errno;
	}

	return hdr->err;
}

#define _ioctl(fd, zu_vect, hdr) __ioctl(fd, zu_vect, hdr, #zu_vect)

static inline
int zuf_register_fs(int fd, struct zus_fs_info *zfi)
{
	struct zufs_ioc_register_fs zirf = {
		.zus_zfi = zfi,
		.rfi = zfi->rfi,
	};

	return _ioctl(fd, ZU_IOC_REGISTER_FS, &zirf.hdr);
}

static inline
int zuf_recieve_mount(int fd, struct  zufs_ioc_mount *zim)
{
	return _ioctl(fd, ZU_IOC_MOUNT, &zim->hdr);
}

static inline
int zuf_numa_map(int fd, struct zufs_ioc_numa_map *zinm)
{
	return _ioctl(fd, ZU_IOC_NUMA_MAP, &zinm->hdr);
}

static inline
int zuf_grab_pmem(int fd, __u64 sb_id, struct zufs_ioc_pmem *zip)
{
	zip->sb_id = sb_id;
	return _ioctl(fd, ZU_IOC_GRAB_PMEM, &zip->hdr);
}

static inline
int zuf_zt_init(int fd, int cpu_num, uint chan, uint max_command)
{
	struct zufs_ioc_init zii = {
		.channel_no = chan,
		.max_command = max_command,
	};

	return _ioctl(fd, ZU_IOC_INIT_THREAD, &zii.hdr);
}

static inline
int zuf_wait_opt(int fd, struct zufs_ioc_wait_operation *opt /*OUT*/)
{
	return _ioctl(fd, ZU_IOC_WAIT_OPT, &opt->hdr);
}

static inline
int zuf_break_all(int fd)
{
	struct zufs_ioc_break_all zba = {};

	return _ioctl(fd, ZU_IOC_BREAK_ALL, &zba.hdr);
}

static inline
int zuf_iomap_exec(int fd, struct zufs_ioc_iomap_exec *ziome)
{
	return _ioctl(fd, ZU_IOC_IOMAP_EXEC, &ziome->hdr);
}

static inline
int zuf_private_mount(int fd, struct zufs_ioc_mount_private *zip)
{
	zip->is_umount = false;
	return _ioctl(fd, ZU_IOC_PRIVATE_MOUNT, &zip->hdr);
}

static inline
int zuf_private_umount(int fd, struct zufs_ioc_mount_private *zip)
{
	zip->is_umount = true;
	return _ioctl(fd, ZU_IOC_PRIVATE_MOUNT, &zip->hdr);
}