/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#ifndef _VSCAN_H
#define _VSCAN_H

#ifdef __cplusplus
extern "C" {
#endif

#include <sys/param.h>
#include <sys/vnode.h>

/*
 * vscan.h provides definitions for vscan kernel module
 */

#define VS_DRV_PATH             "/dev/vscan/vscan" /* append minor dev num */

#define VS_IOCTL_ENABLE         0x01    /* door rendezvous */
#define VS_IOCTL_DISABLE        0x02    /* vscand shutting down */
#define VS_IOCTL_CONFIG         0x03    /* vscand config data update */
#define VS_IOCTL_RESULT         0x04    /* scan result */
#define VS_IOCTL_MAX_REQ        0x05    /* max in-progress req vscand */

/* Scan Result - vsr_result */
#define VS_STATUS_UNDEFINED     0
#define VS_STATUS_NO_SCAN       1       /* scan not required */
#define VS_STATUS_ERROR         2       /* scan failed */
#define VS_STATUS_CLEAN         3       /* scan successful, file clean */
#define VS_STATUS_INFECTED      4       /* scan successful, file infected */
#define VS_STATUS_SCANNING      5       /* scan in progress - async */

/* Configuration data vs_config_t - vsc_types */
#define VS_TYPES_LEN            4096    /* vs_config_t - types buffer */
#define VS_TYPES_MAX            VS_TYPES_LEN / 2


/*
 * AV_SCANSTAMP_SZ is the size of the scanstamp stored in the
 * filesystem. vs_scanstamp_t is 1 character longer to allow
 * a null terminated string to be used within vscan
 */
typedef char vs_scanstamp_t[AV_SCANSTAMP_SZ + 1];

/* used for door request to vscand */
typedef struct vs_scan_req {
        uint32_t vsr_idx;
        uint32_t vsr_seqnum;
        uint64_t vsr_size;
        uint32_t vsr_flags;
        uint8_t vsr_modified;
        uint8_t vsr_quarantined;
        char vsr_path[MAXPATHLEN];
        vs_scanstamp_t vsr_scanstamp;
} vs_scan_req_t;


/* passed in VS_IOCTL_RESULT - async response from vscand */
typedef struct vs_scan_rsp {
        uint32_t vsr_idx;
        uint32_t vsr_seqnum;
        uint32_t vsr_result;
        vs_scanstamp_t vsr_scanstamp;
} vs_scan_rsp_t;


/* passed in VS_IOCTL_CONFIG */
typedef struct vs_config {
        char vsc_types[VS_TYPES_LEN];
        uint64_t vsc_types_len;
        uint64_t vsc_max_size;  /* files > max size (bytes) not scan */
        uint64_t vsc_allow;     /* allow access to file exceeding max_size? */
} vs_config_t;


#ifdef _KERNEL
int vscan_svc_init(void);
void vscan_svc_fini(void);
int vscan_svc_enable(void);
void vscan_svc_disable(void);
int vscan_svc_configure(vs_config_t *);
boolean_t vscan_svc_in_use(void);
void vscan_svc_scan_result(vs_scan_rsp_t *);
void vscan_svc_scan_abort(void);
vnode_t *vscan_svc_get_vnode(int);

int vscan_door_init(void);
void vscan_door_fini(void);
int vscan_door_open(int);
void vscan_door_close(void);
int vscan_door_scan_file(vs_scan_req_t *);

boolean_t vscan_drv_create_node(int);

#endif /* _KERNEL */

#ifdef __cplusplus
}
#endif


#endif /* _VSCAN_H */