/*
 * 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 2009 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 * Copyright (c) 2016 by Delphix. All rights reserved.
 */

/*
 * basic declarations for implementation of the share management
 * libraries.
 */

#ifndef _LIBSHARE_IMPL_H
#define _LIBSHARE_IMPL_H

#include <libshare.h>
#include <libscf.h>
#include <scfutil.h>
#include <libzfs.h>
#include <sharefs/share.h>
#include <sharefs/sharetab.h>

#ifdef  __cplusplus
extern "C" {
#endif

/* directory to find plugin modules in */
#define SA_LIB_DIR      "/usr/lib/fs"

/* default group name for dfstab file */
#define SA_DEFAULT_FILE_GRP     "sys"

typedef void *sa_phandle_t;

#define SA_PLUGIN_VERSION       1
struct sa_plugin_ops {
        int     sa_version;                     /* version number */
        char    *sa_protocol;                   /* protocol name */
        int     (*sa_init)();
        void    (*sa_fini)();
        int     (*sa_share)(sa_share_t);        /* start sharing */
        int     (*sa_unshare)(sa_share_t, char *); /* stop sharing */
        int     (*sa_valid_prop)(sa_handle_t, sa_property_t,
            sa_optionset_t); /* validate */
        int     (*sa_valid_space)(char *);      /* is name valid optionspace? */
        int     (*sa_security_prop)(char *);    /* property is security */
        int     (*sa_legacy_opts)(sa_group_t, char *); /* parse legacy opts */
        char   *(*sa_legacy_format)(sa_group_t, int);
        int     (*sa_set_proto_prop)(sa_property_t);    /* set a property */
        sa_protocol_properties_t (*sa_get_proto_set)(); /* get properties */
        char   *(*sa_get_proto_status)();
        char   *(*sa_space_alias)(char *);
        int     (*sa_update_legacy)(sa_share_t);
        int     (*sa_delete_legacy)(sa_share_t);
        int     (*sa_change_notify)(sa_share_t);
        int     (*sa_enable_resource)(sa_resource_t);
        int     (*sa_disable_resource)(sa_resource_t);
        uint64_t (*sa_features)(void);
        int     (*sa_get_transient_shares)(sa_handle_t); /* add transients */
        int     (*sa_notify_resource)(sa_resource_t);
        int     (*sa_rename_resource)(sa_handle_t, sa_resource_t, char *);
        int     (*sa_run_command)(int, int, char **); /* proto specific */
        int     (*sa_command_help)();
        int     (*sa_delete_proto_section)(char *);
};

struct sa_proto_handle {
        int                     sa_num_proto;
        char                    **sa_proto;
        struct sa_plugin_ops    **sa_ops;
};

typedef struct propertylist {
        struct propertylist     *pl_next;
        int                     pl_type;
        union propval {
            sa_optionset_t      pl_optionset;
            sa_security_t       pl_security;
            void                *pl_void;
        }                       pl_value;
} property_list_t;

/* internal version of sa_handle_t */
typedef struct sa_handle_impl {
        uint64_t        flags;
        scfutilhandle_t *scfhandle;
        libzfs_handle_t *zfs_libhandle;
        zfs_handle_t    **zfs_list;
        size_t          zfs_list_count;
        xmlNodePtr      tree;
        xmlDocPtr       doc;
        uint64_t        tssharetab;
        uint64_t        tstrans;
        int             sa_service;
} *sa_handle_impl_t;

extern int sa_proto_share(char *, sa_share_t);
extern int sa_proto_unshare(sa_share_t, char *, char *);
extern int sa_proto_valid_prop(sa_handle_t, char *, sa_property_t,
    sa_optionset_t);
extern int sa_proto_security_prop(char *, char *);
extern int sa_proto_legacy_opts(char *, sa_group_t, char *);
extern int sa_proto_share_resource(char *, sa_resource_t);
extern int sa_proto_unshare_resource(char *, sa_resource_t);

/* internal utility functions */
extern sa_optionset_t sa_get_derived_optionset(sa_group_t, char *, int);
extern void sa_free_derived_optionset(sa_optionset_t);
extern sa_optionset_t sa_get_all_security_types(void *, char *, int);
extern sa_security_t sa_get_derived_security(void *, char *, char *, int);
extern void sa_free_derived_security(sa_security_t);
extern sa_protocol_properties_t sa_create_protocol_properties(char *);
extern int sa_start_transaction(scfutilhandle_t *, char *);
extern int sa_end_transaction(scfutilhandle_t *, sa_handle_impl_t);
extern void sa_abort_transaction(scfutilhandle_t *);
extern int sa_commit_share(scfutilhandle_t *, sa_group_t, sa_share_t);
extern int sa_set_property(scfutilhandle_t *, char *, char *);
extern void sa_free_fstype(char *fstyp);
extern int sa_delete_share(scfutilhandle_t *, sa_group_t, sa_share_t);
extern int sa_delete_instance(scfutilhandle_t *, char *);
extern int sa_create_pgroup(scfutilhandle_t *, char *);
extern int sa_delete_pgroup(scfutilhandle_t *, char *);
extern void sa_fillshare(sa_share_t share, char *proto, struct share *sh);
extern void sa_emptyshare(struct share *sh);

/* ZFS functions */
extern int sa_get_one_zfs_share(sa_handle_t, char *, sa_init_selective_arg_t *,
    char ***, size_t *);
extern int sa_get_zfs_shares(sa_handle_t, char *);
extern int sa_get_zfs_share_for_name(sa_handle_t, char *, const char *, char *);
extern int sa_zfs_update(sa_share_t);
extern int sa_share_zfs(sa_share_t, sa_resource_t, char *, share_t *,
    void *, zfs_share_op_t);
extern int sa_sharetab_fill_zfs(sa_share_t share, struct share *sh,
    char *proto);

/* plugin specific functions */
extern int proto_plugin_init();
extern void proto_plugin_fini();
extern int sa_proto_set_property(char *, sa_property_t);
extern int sa_proto_delete_legacy(char *, sa_share_t);
extern int sa_proto_update_legacy(char *, sa_share_t);
extern int sa_proto_rename_resource(sa_handle_t, char *,
    sa_resource_t, char *);

#define PL_TYPE_PROPERTY        0
#define PL_TYPE_SECURITY        1

/* values only used by the internal dfstab/sharetab parser */
#define SA_SHARE_PARSER         0x1000

/* plugin handler only */
struct sa_proto_plugin {
        struct sa_proto_plugin  *plugin_next;
        struct sa_plugin_ops    *plugin_ops;
        void                    *plugin_handle;
};

#define TSTAMP(tm)      (uint64_t)(((uint64_t)tm.tv_sec << 32) | \
                                        (tm.tv_nsec & 0xffffffff))


#ifdef  __cplusplus
}
#endif

#endif /* _LIBSHARE_IMPL_H */