include/sdp/fs_handler.h

/*
 * Copyright (c) 2015 Samsung Electronics Co., Ltd.
 *
 * Sensitive Data Protection
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#ifndef _SDP_FS_HANDLER_H
#define _SDP_FS_HANDLER_H

#include <sdp/dek_common.h>
#include <sdp/fs_request.h>

#include <linux/list.h>
#include <linux/wait.h>
#include <linux/spinlock.h>
#include <linux/limits.h>

#define SDP_FS_HANDLER_NETLINK 28
#define SDP_FS_HANDLER_PID_SET 3001
#define SDP_FS_HANDLER_RESULT 3002

#define OP_SDP_SET_DIR_SENSITIVE 10
#define OP_SDP_SET_DIR_PROTECTED 11

#define OP_SDP_ERROR 99

typedef struct result {
    u32 request_id;
    u8 opcode;
    s16 ret;
}result_t;

/** The request state */
enum req_state {
    SDP_FS_HANDLER_REQ_INIT = 0,
    SDP_FS_HANDLER_REQ_PENDING,
    SDP_FS_HANDLER_REQ_FINISHED
};

typedef struct __sdp_fs_handler_contorl {
    struct list_head pending_list;
    //wait_queue_head_t waitq;
    spinlock_t lock;

    /** The next unique request id */
    u32 reqctr;
}sdp_fs_handler_control_t;

typedef struct __sdp_fs_handler_request {
    u32 id;
    u8 opcode;

    struct list_head list;
    /** refcount */
    atomic_t count;

    enum req_state state;

    sdp_fs_command_t command;
    result_t result;

    fs_request_cb_t callback;

    /** The request was aborted */
    u8 aborted;
}sdp_fs_handler_request_t;
#endif