/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
#ifndef _LINUX_CACHEFILES_H
#define _LINUX_CACHEFILES_H

#include <linux/types.h>
#include <linux/ioctl.h>


#define CACHEFILES_MSG_MAX_SIZE	1024

enum cachefiles_opcode {
	CACHEFILES_OP_OPEN,
	CACHEFILES_OP_CLOSE,
	CACHEFILES_OP_READ,
};


struct cachefiles_msg {
	__u32 msg_id;
	__u32 opcode;
	__u32 len;
	__u32 object_id;
	__u8  data[];
};


struct cachefiles_open {
	__u32 volume_key_size;
	__u32 cookie_key_size;
	__u32 fd;
	__u32 flags;
	__u8  data[];
};


struct cachefiles_read {
	__u64 off;
	__u64 len;
};


#define CACHEFILES_IOC_READ_COMPLETE	_IOW(0x98, 1, int)

#endif
