/*
 * 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 (c) 2006, 2010, Oracle and/or its affiliates. All rights reserved.
 * Copyright 2018 Nexenta Systems, Inc.  All rights reserved.
 * Copyright (c) 2016 by Delphix. All rights reserved.
 */

/*
 * basic API declarations for share management
 */

#ifndef _LIBSHARE_H
#define _LIBSHARE_H

#ifdef  __cplusplus
extern "C" {
#endif

#include <sys/types.h>
#include <sys/nvpair.h>
#include <libzfs.h>

/*
 * Basic datatypes for most functions
 */
typedef void *sa_group_t;
typedef void *sa_share_t;
typedef void *sa_property_t;
typedef void *sa_optionset_t;
typedef void *sa_security_t;
typedef void *sa_protocol_properties_t;
typedef void *sa_resource_t;

typedef void *sa_handle_t;      /* opaque handle to access core functions */

/*
 * defined error values
 */

#define SA_OK                   0
#define SA_NO_SUCH_PATH         1       /* provided path doesn't exist */
#define SA_NO_MEMORY            2       /* no memory for data structures */
#define SA_DUPLICATE_NAME       3       /* object name is already in use */
#define SA_BAD_PATH             4       /* not a full path */
#define SA_NO_SUCH_GROUP        5       /* group is not defined */
#define SA_CONFIG_ERR           6       /* system configuration error */
#define SA_SYSTEM_ERR           7       /* system error, use errno */
#define SA_SYNTAX_ERR           8       /* syntax error on command line */
#define SA_NO_PERMISSION        9       /* no permission for operation */
#define SA_BUSY                 10      /* resource is busy */
#define SA_NO_SUCH_PROP         11      /* property doesn't exist */
#define SA_INVALID_NAME         12      /* name of object is invalid */
#define SA_INVALID_PROTOCOL     13      /* specified protocol not valid */
#define SA_NOT_ALLOWED          14      /* operation not allowed */
#define SA_BAD_VALUE            15      /* bad value for property */
#define SA_INVALID_SECURITY     16      /* invalid security type */
#define SA_NO_SUCH_SECURITY     17      /* security set not found */
#define SA_VALUE_CONFLICT       18      /* property value conflict */
#define SA_NOT_IMPLEMENTED      19      /* plugin interface not implemented */
#define SA_INVALID_PATH         20      /* path is sub-dir of existing share */
#define SA_NOT_SUPPORTED        21      /* operation not supported for proto */
#define SA_PROP_SHARE_ONLY      22      /* property valid on share only */
#define SA_NOT_SHARED           23      /* path is not shared */
#define SA_NO_SUCH_RESOURCE     24      /* resource not found */
#define SA_RESOURCE_REQUIRED    25      /* resource name is required  */
#define SA_MULTIPLE_ERROR       26      /* multiple protocols reported error */
#define SA_PATH_IS_SUBDIR       27      /* check_path found path is subdir */
#define SA_PATH_IS_PARENTDIR    28      /* check_path found path is parent */
#define SA_NO_SECTION           29      /* protocol requires section info */
#define SA_NO_SUCH_SECTION      30      /* no section found */
#define SA_NO_PROPERTIES        31      /* no properties found */
#define SA_PASSWORD_ENC         32      /* passwords must be encrypted */
#define SA_SHARE_EXISTS         33      /* path or file is already shared */

/* API Initialization */
/* Both of these do not care about the value of arg in sa_init_arg */
#define SA_INIT_SHARE_API       0x0001  /* init share specific interface */
#define SA_INIT_CONTROL_API     0x0002  /* init control specific interface */

/* expects an sa_init_selective_arg_t as an argument */
#define SA_INIT_SHARE_API_SELECTIVE     0x0004  /* only some shares */
struct sa_init_selective_arg {
        zfs_handle_t **zhandle_arr;
        size_t zhandle_len;
};
typedef struct sa_init_selective_arg sa_init_selective_arg_t;


/*
 * The SA_INIT_ONE_SHARE* initialization options to sa_init* will cause
 * sa_needs_refrsh() to return true even if nothing else in the system has
 * changed. If writing code that could possibly need to share/unshare multiple
 * shares, it is recommended to use SA_INIT_SHARE_API_SELECTIVE.
 */
/* Expects a single char * as input, the name of the share. */
#define SA_INIT_ONE_SHARE_FROM_NAME     0x0008

/* Expects a single zfs_handle_t as input, the handle of the share. */
#define SA_INIT_ONE_SHARE_FROM_HANDLE   0x0010

/* not part of API returns */
#define SA_LEGACY_ERR           32      /* share/unshare error return */

/*
 * other defined values
 */

#define SA_MAX_NAME_LEN         100     /* must fit service instance name */
#define SA_MAX_RESOURCE_NAME    255     /* Maximum length of resource name */

/* Used in calls to sa_add_share() and sa_add_resource() */
#define SA_SHARE_TRANSIENT      0       /* shared but not across reboot */
#define SA_SHARE_LEGACY         1       /* share is in dfstab only */
#define SA_SHARE_PERMANENT      2       /* share goes to repository */

/* sa_check_path() related */
#define SA_CHECK_NORMAL         0       /* only check against active shares */
#define SA_CHECK_STRICT         1       /* check against all shares */

/* RBAC related */
#define SA_RBAC_MANAGE  "solaris.smf.manage.shares"
#define SA_RBAC_VALUE   "solaris.smf.value.shares"

/*
 * Feature set bit definitions
 */

#define SA_FEATURE_NONE         0x0000  /* no feature flags set */
#define SA_FEATURE_RESOURCE     0x0001  /* resource names are required */
#define SA_FEATURE_DFSTAB       0x0002  /* need to manage in dfstab */
#define SA_FEATURE_ALLOWSUBDIRS 0x0004  /* allow subdirs to be shared */
#define SA_FEATURE_ALLOWPARDIRS 0x0008  /* allow parent dirs to be shared */
#define SA_FEATURE_HAS_SECTIONS 0x0010  /* protocol supports sections */
#define SA_FEATURE_ADD_PROPERTIES       0x0020  /* can add properties */
#define SA_FEATURE_SERVER       0x0040  /* protocol supports server mode */

/*
 * legacy files
 */

#define SA_LEGACY_DFSTAB        "/etc/dfs/dfstab"
#define SA_LEGACY_SHARETAB      "/etc/dfs/sharetab"

/*
 * SMF related
 */

#define SA_SVC_FMRI_BASE        "svc:/network/shares/group"

/* initialization */
extern sa_handle_t sa_init(int);
extern sa_handle_t sa_init_arg(int, void *);
extern void sa_fini(sa_handle_t);
extern int sa_service(sa_handle_t);

extern int sa_update_config(sa_handle_t);
extern boolean_t sa_needs_refresh(sa_handle_t);
extern char *sa_errorstr(int);

/* protocol names */
extern int sa_get_protocols(char ***);
extern int sa_valid_protocol(char *);

/* group control (create, remove, etc) */
extern sa_group_t sa_create_group(sa_handle_t, char *, int *);
extern int sa_remove_group(sa_group_t);
extern sa_group_t sa_get_group(sa_handle_t, char *);
extern sa_group_t sa_get_next_group(sa_group_t);
extern char *sa_get_group_attr(sa_group_t, char *);
extern int sa_set_group_attr(sa_group_t, char *, char *);
extern sa_group_t sa_get_sub_group(sa_group_t);
extern int sa_valid_group_name(char *);

/* share control */
extern sa_share_t sa_add_share(sa_group_t, char *, int, int *);
extern int sa_check_path(sa_group_t, char *, int);
extern int sa_move_share(sa_group_t, sa_share_t);
extern int sa_remove_share(sa_share_t);
extern sa_share_t sa_get_share(sa_group_t, char *);
extern sa_share_t sa_find_share(sa_handle_t, char *);
extern sa_share_t sa_get_next_share(sa_share_t);
extern char *sa_get_share_attr(sa_share_t, char *);
extern char *sa_get_share_description(sa_share_t);
extern sa_group_t sa_get_parent_group(sa_share_t);
extern int sa_set_share_attr(sa_share_t, char *, char *);
extern int sa_set_share_description(sa_share_t, char *);
extern int sa_enable_share(sa_group_t, char *);
extern int sa_disable_share(sa_share_t, char *);
extern int sa_is_share(void *);

/* resource name related */
extern sa_resource_t sa_find_resource(sa_handle_t, char *);
extern sa_resource_t sa_get_resource(sa_group_t, char *);
extern sa_resource_t sa_get_next_resource(sa_resource_t);
extern sa_share_t sa_get_resource_parent(sa_resource_t);
extern sa_resource_t sa_get_share_resource(sa_share_t, char *);
extern sa_resource_t sa_add_resource(sa_share_t, char *, int, int *);
extern int sa_remove_resource(sa_resource_t);
extern char *sa_get_resource_attr(sa_resource_t, char *);
extern int sa_set_resource_attr(sa_resource_t, char *, char *);
extern int sa_set_resource_description(sa_resource_t, char *);
extern char *sa_get_resource_description(sa_resource_t);
extern int sa_enable_resource(sa_resource_t, char *);
extern int sa_disable_resource(sa_resource_t, char *);
extern int sa_rename_resource(sa_resource_t, char *);
extern void sa_fix_resource_name(char *);

/* data structure free calls */
extern void sa_free_attr_string(char *);
extern void sa_free_share_description(char *);

/* optionset control */
extern sa_optionset_t sa_get_optionset(sa_group_t, char *);
extern sa_optionset_t sa_get_next_optionset(sa_group_t);
extern char *sa_get_optionset_attr(sa_optionset_t, char *);
extern void sa_set_optionset_attr(sa_optionset_t, char *, char *);
extern sa_optionset_t sa_create_optionset(sa_group_t, char *);
extern int sa_destroy_optionset(sa_optionset_t);
extern sa_optionset_t sa_get_derived_optionset(void *, char *, int);
extern void sa_free_derived_optionset(sa_optionset_t);

/* property functions */
extern sa_property_t sa_get_property(sa_optionset_t, char *);
extern sa_property_t sa_get_next_property(sa_group_t);
extern char *sa_get_property_attr(sa_property_t, char *);
extern sa_property_t sa_create_section(char *, char *);
extern void sa_set_section_attr(sa_property_t, char *, char *);
extern sa_property_t sa_create_property(char *, char *);
extern int sa_add_property(void *, sa_property_t);
extern int sa_update_property(sa_property_t, char *);
extern int sa_remove_property(sa_property_t);
extern int sa_commit_properties(sa_optionset_t, int);
extern int sa_valid_property(sa_handle_t, void *, char *, sa_property_t);
extern int sa_is_persistent(void *);

/* security control */
extern sa_security_t sa_get_security(sa_group_t, char *, char *);
extern sa_security_t sa_get_next_security(sa_security_t);
extern char *sa_get_security_attr(sa_optionset_t, char *);
extern sa_security_t sa_create_security(sa_group_t, char *, char *);
extern int sa_destroy_security(sa_security_t);
extern void sa_set_security_attr(sa_security_t, char *, char *);
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);

/* protocol specific interfaces */
extern int sa_parse_legacy_options(sa_group_t, char *, char *);
extern char *sa_proto_legacy_format(char *, sa_group_t, int);
extern int sa_is_security(char *, char *);
extern sa_protocol_properties_t sa_proto_get_properties(char *);
extern uint64_t sa_proto_get_featureset(char *);
extern sa_property_t sa_get_protocol_section(sa_protocol_properties_t, char *);
extern sa_property_t sa_get_next_protocol_section(sa_property_t, char *);
extern sa_property_t sa_get_protocol_property(sa_protocol_properties_t, char *);
extern sa_property_t sa_get_next_protocol_property(sa_property_t, char *);
extern int sa_set_protocol_property(sa_property_t, char *, char *);
extern char *sa_get_protocol_status(char *);
extern void sa_format_free(char *);
extern sa_protocol_properties_t sa_create_protocol_properties(char *);
extern int sa_add_protocol_property(sa_protocol_properties_t, sa_property_t);
extern int sa_proto_valid_prop(sa_handle_t, char *, sa_property_t,
    sa_optionset_t);
extern int sa_proto_valid_space(char *, char *);
extern char *sa_proto_space_alias(char *, char *);
extern int sa_proto_get_transients(sa_handle_t, char *);
extern int sa_proto_notify_resource(sa_resource_t, char *);
extern int sa_proto_change_notify(sa_share_t, char *);
extern int sa_proto_delete_section(char *, char *);

/* handle legacy (dfstab/sharetab) files */
extern int sa_delete_legacy(sa_share_t, char *);
extern int sa_update_legacy(sa_share_t, char *);
extern int sa_update_sharetab(sa_share_t, char *);
extern int sa_delete_sharetab(sa_handle_t, char *, char *);

/* ZFS functions */
extern int sa_zfs_is_shared(sa_handle_t, char *);
extern int sa_group_is_zfs(sa_group_t);
extern int sa_path_is_zfs(char *);
extern int sa_zfs_setprop(sa_handle_t, char *, nvlist_t *);

/* SA Handle specific functions */
extern sa_handle_t sa_find_group_handle(sa_group_t);

#ifdef  __cplusplus
}
#endif

#endif /* _LIBSHARE_H */