include/sdp/fs_request.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 FS_REQUEST_H_
#define FS_REQUEST_H_

#include <linux/slab.h>

#define FSOP_SDP_SET_SENSITIVE 10
#define FSOP_SDP_SET_PROTECTED 11

#define FSOP_DLP_FILE_OPENED   21
#define FSOP_DLP_FILE_CLOSED   22
#define FSOP_DLP_FILE_INIT     23
#define FSOP_DLP_FILE_INIT_RESTRICTED     24
#define FSOP_DLP_FILE_REMOVE     25
#define FSOP_DLP_FILE_RENAME     26
#define FSOP_DLP_FILE_ACCESS_DENIED     27
#define FSOP_DLP_FILE_OPENED_CREATOR    28
#define FSOP_DLP_FILE_REMOVE_MEDIA     29

#define FSOP_AUDIT_FAIL_ENCRYPT		51
#define FSOP_AUDIT_FAIL_DECRYPT		52
#define FSOP_AUDIT_FAIL_ACCESS		53

// opcode, ret, inode
typedef void (*fs_request_cb_t)(int, int, unsigned long);

typedef struct sdp_fs_command {
	int req_id;

	int opcode;
    int user_id;
    int part_id;
    unsigned long ino;
    int pid;
}sdp_fs_command_t;

extern int sdp_fs_request(sdp_fs_command_t *sdp_req, fs_request_cb_t callback);

static inline sdp_fs_command_t *sdp_fs_command_alloc(int opcode, int pid,
        int userid, int partid, unsigned long ino, gfp_t gfp) {
    sdp_fs_command_t *cmd;

    cmd = kmalloc(sizeof(sdp_fs_command_t), gfp);

    if(cmd == NULL) {
	printk(KERN_ERR "sdp_fs_command_alloc is failed\n");
	return NULL;
    }

    cmd->opcode = opcode;
    cmd->pid = pid;
    cmd->user_id = userid;
    cmd->part_id = partid;
    cmd->ino = ino;

    return cmd;
}

static inline void sdp_fs_command_free(sdp_fs_command_t *cmd)
{
    kzfree(cmd);
}

#endif /* FS_REQUEST_H_ */