/*
 * 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) 2000, 2010, Oracle and/or its affiliates. All rights reserved.
 * Copyright (c) 2012, 2017 by Delphix. All rights reserved.
 */

#ifndef _SYS_NVPAIR_H
#define _SYS_NVPAIR_H

#include <sys/types.h>
#include <sys/time.h>
#include <sys/errno.h>
#include <sys/va_list.h>

#if defined(_KERNEL) && !defined(_BOOT)
#include <sys/kmem.h>
#endif

#ifdef  __cplusplus
extern "C" {
#endif

typedef enum {
        DATA_TYPE_DONTCARE = -1,
        DATA_TYPE_UNKNOWN = 0,
        DATA_TYPE_BOOLEAN,
        DATA_TYPE_BYTE,
        DATA_TYPE_INT16,
        DATA_TYPE_UINT16,
        DATA_TYPE_INT32,
        DATA_TYPE_UINT32,
        DATA_TYPE_INT64,
        DATA_TYPE_UINT64,
        DATA_TYPE_STRING,
        DATA_TYPE_BYTE_ARRAY,
        DATA_TYPE_INT16_ARRAY,
        DATA_TYPE_UINT16_ARRAY,
        DATA_TYPE_INT32_ARRAY,
        DATA_TYPE_UINT32_ARRAY,
        DATA_TYPE_INT64_ARRAY,
        DATA_TYPE_UINT64_ARRAY,
        DATA_TYPE_STRING_ARRAY,
        DATA_TYPE_HRTIME,
        DATA_TYPE_NVLIST,
        DATA_TYPE_NVLIST_ARRAY,
        DATA_TYPE_BOOLEAN_VALUE,
        DATA_TYPE_INT8,
        DATA_TYPE_UINT8,
        DATA_TYPE_BOOLEAN_ARRAY,
        DATA_TYPE_INT8_ARRAY,
#if !defined(_KERNEL)
        DATA_TYPE_UINT8_ARRAY,
        DATA_TYPE_DOUBLE
#else
        DATA_TYPE_UINT8_ARRAY
#endif
} data_type_t;

typedef struct nvpair {
        int32_t nvp_size;       /* size of this nvpair */
        int16_t nvp_name_sz;    /* length of name string */
        int16_t nvp_reserve;    /* not used */
        int32_t nvp_value_elem; /* number of elements for array types */
        data_type_t nvp_type;   /* type of value */
        /* name string */
        /* aligned ptr array for string arrays */
        /* aligned array of data for value */
} nvpair_t;

/* nvlist header */
typedef struct nvlist {
        int32_t         nvl_version;
        uint32_t        nvl_nvflag;     /* persistent flags */
        uint64_t        nvl_priv;       /* ptr to private data if not packed */
        uint32_t        nvl_flag;
        int32_t         nvl_pad;        /* currently not used, for alignment */
} nvlist_t;

/* nvp implementation version */
#define NV_VERSION      0

/* nvlist pack encoding */
#define NV_ENCODE_NATIVE        0
#define NV_ENCODE_XDR           1

/* nvlist persistent unique name flags, stored in nvl_nvflags */
#define NV_UNIQUE_NAME          0x1
#define NV_UNIQUE_NAME_TYPE     0x2

/* nvlist lookup pairs related flags */
#define NV_FLAG_NOENTOK         0x1

/* convenience macros */
#define NV_ALIGN(x)             (((ulong_t)(x) + 7ul) & ~7ul)
#define NV_ALIGN4(x)            (((x) + 3) & ~3)

#define NVP_SIZE(nvp)           ((nvp)->nvp_size)
#define NVP_NAME(nvp)           ((char *)(nvp) + sizeof (nvpair_t))
#define NVP_TYPE(nvp)           ((nvp)->nvp_type)
#define NVP_NELEM(nvp)          ((nvp)->nvp_value_elem)
#define NVP_VALUE(nvp)          ((char *)(nvp) + NV_ALIGN(sizeof (nvpair_t) \
                                + (nvp)->nvp_name_sz))

#define NVL_VERSION(nvl)        ((nvl)->nvl_version)
#define NVL_SIZE(nvl)           ((nvl)->nvl_size)
#define NVL_FLAG(nvl)           ((nvl)->nvl_flag)

/* NV allocator framework */
typedef struct nv_alloc_ops nv_alloc_ops_t;

typedef struct nv_alloc {
        const nv_alloc_ops_t *nva_ops;
        void *nva_arg;
} nv_alloc_t;

struct nv_alloc_ops {
        int (*nv_ao_init)(nv_alloc_t *, __va_list);
        void (*nv_ao_fini)(nv_alloc_t *);
        void *(*nv_ao_alloc)(nv_alloc_t *, size_t);
        void (*nv_ao_free)(nv_alloc_t *, void *, size_t);
        void (*nv_ao_reset)(nv_alloc_t *);
};

extern const nv_alloc_ops_t *nv_fixed_ops;
extern nv_alloc_t *nv_alloc_nosleep;

#if defined(_KERNEL) && !defined(_BOOT)
extern nv_alloc_t *nv_alloc_sleep;
#endif

int nv_alloc_init(nv_alloc_t *, const nv_alloc_ops_t *, /* args */ ...);
void nv_alloc_reset(nv_alloc_t *);
void nv_alloc_fini(nv_alloc_t *);

/* list management */
int nvlist_alloc(nvlist_t **, uint_t, int);
void nvlist_free(nvlist_t *);
int nvlist_size(nvlist_t *, size_t *, int);
int nvlist_pack(nvlist_t *, char **, size_t *, int, int);
int nvlist_unpack(char *, size_t, nvlist_t **, int);
int nvlist_dup(nvlist_t *, nvlist_t **, int);
int nvlist_merge(nvlist_t *, nvlist_t *, int);

uint_t nvlist_nvflag(nvlist_t *);

int nvlist_xalloc(nvlist_t **, uint_t, nv_alloc_t *);
int nvlist_xpack(nvlist_t *, char **, size_t *, int, nv_alloc_t *);
int nvlist_xunpack(char *, size_t, nvlist_t **, nv_alloc_t *);
int nvlist_xdup(nvlist_t *, nvlist_t **, nv_alloc_t *);
nv_alloc_t *nvlist_lookup_nv_alloc(nvlist_t *);

int nvlist_add_nvpair(nvlist_t *, nvpair_t *);
int nvlist_add_boolean(nvlist_t *, const char *);
int nvlist_add_boolean_value(nvlist_t *, const char *, boolean_t);
int nvlist_add_byte(nvlist_t *, const char *, uchar_t);
int nvlist_add_int8(nvlist_t *, const char *, int8_t);
int nvlist_add_uint8(nvlist_t *, const char *, uint8_t);
int nvlist_add_int16(nvlist_t *, const char *, int16_t);
int nvlist_add_uint16(nvlist_t *, const char *, uint16_t);
int nvlist_add_int32(nvlist_t *, const char *, int32_t);
int nvlist_add_uint32(nvlist_t *, const char *, uint32_t);
int nvlist_add_int64(nvlist_t *, const char *, int64_t);
int nvlist_add_uint64(nvlist_t *, const char *, uint64_t);
int nvlist_add_string(nvlist_t *, const char *, const char *);
int nvlist_add_nvlist(nvlist_t *, const char *, nvlist_t *);
int nvlist_add_boolean_array(nvlist_t *, const char *, boolean_t *, uint_t);
int nvlist_add_byte_array(nvlist_t *, const char *, uchar_t *, uint_t);
int nvlist_add_int8_array(nvlist_t *, const char *, int8_t *, uint_t);
int nvlist_add_uint8_array(nvlist_t *, const char *, uint8_t *, uint_t);
int nvlist_add_int16_array(nvlist_t *, const char *, int16_t *, uint_t);
int nvlist_add_uint16_array(nvlist_t *, const char *, uint16_t *, uint_t);
int nvlist_add_int32_array(nvlist_t *, const char *, int32_t *, uint_t);
int nvlist_add_uint32_array(nvlist_t *, const char *, uint32_t *, uint_t);
int nvlist_add_int64_array(nvlist_t *, const char *, int64_t *, uint_t);
int nvlist_add_uint64_array(nvlist_t *, const char *, uint64_t *, uint_t);
int nvlist_add_string_array(nvlist_t *, const char *, char *const *, uint_t);
int nvlist_add_nvlist_array(nvlist_t *, const char *, nvlist_t **, uint_t);
int nvlist_add_hrtime(nvlist_t *, const char *, hrtime_t);
#if !defined(_KERNEL)
int nvlist_add_double(nvlist_t *, const char *, double);
#endif

int nvlist_remove(nvlist_t *, const char *, data_type_t);
int nvlist_remove_all(nvlist_t *, const char *);
int nvlist_remove_nvpair(nvlist_t *, nvpair_t *);

int nvlist_lookup_boolean(nvlist_t *, const char *);
int nvlist_lookup_boolean_value(nvlist_t *, const char *, boolean_t *);
int nvlist_lookup_byte(nvlist_t *, const char *, uchar_t *);
int nvlist_lookup_int8(nvlist_t *, const char *, int8_t *);
int nvlist_lookup_uint8(nvlist_t *, const char *, uint8_t *);
int nvlist_lookup_int16(nvlist_t *, const char *, int16_t *);
int nvlist_lookup_uint16(nvlist_t *, const char *, uint16_t *);
int nvlist_lookup_int32(nvlist_t *, const char *, int32_t *);
int nvlist_lookup_uint32(nvlist_t *, const char *, uint32_t *);
int nvlist_lookup_int64(nvlist_t *, const char *, int64_t *);
int nvlist_lookup_uint64(nvlist_t *, const char *, uint64_t *);
int nvlist_lookup_string(nvlist_t *, const char *, char **);
int nvlist_lookup_nvlist(nvlist_t *, const char *, nvlist_t **);
int nvlist_lookup_boolean_array(nvlist_t *, const char *,
    boolean_t **, uint_t *);
int nvlist_lookup_byte_array(nvlist_t *, const char *, uchar_t **, uint_t *);
int nvlist_lookup_int8_array(nvlist_t *, const char *, int8_t **, uint_t *);
int nvlist_lookup_uint8_array(nvlist_t *, const char *, uint8_t **, uint_t *);
int nvlist_lookup_int16_array(nvlist_t *, const char *, int16_t **, uint_t *);
int nvlist_lookup_uint16_array(nvlist_t *, const char *, uint16_t **, uint_t *);
int nvlist_lookup_int32_array(nvlist_t *, const char *, int32_t **, uint_t *);
int nvlist_lookup_uint32_array(nvlist_t *, const char *, uint32_t **, uint_t *);
int nvlist_lookup_int64_array(nvlist_t *, const char *, int64_t **, uint_t *);
int nvlist_lookup_uint64_array(nvlist_t *, const char *, uint64_t **, uint_t *);
int nvlist_lookup_string_array(nvlist_t *, const char *, char ***, uint_t *);
int nvlist_lookup_nvlist_array(nvlist_t *, const char *,
    nvlist_t ***, uint_t *);
int nvlist_lookup_hrtime(nvlist_t *, const char *, hrtime_t *);
int nvlist_lookup_pairs(nvlist_t *, int, ...);
#if !defined(_KERNEL)
int nvlist_lookup_double(nvlist_t *, const char *, double *);
#endif

int nvlist_lookup_nvpair(nvlist_t *, const char *, nvpair_t **);
int nvlist_lookup_nvpair_embedded_index(nvlist_t *, const char *, nvpair_t **,
    int *, char **);
boolean_t nvlist_exists(nvlist_t *, const char *);
boolean_t nvlist_empty(nvlist_t *);

/* processing nvpair */
nvpair_t *nvlist_next_nvpair(nvlist_t *, nvpair_t *);
nvpair_t *nvlist_prev_nvpair(nvlist_t *, nvpair_t *);
char *nvpair_name(nvpair_t *);
data_type_t nvpair_type(nvpair_t *);
int nvpair_type_is_array(nvpair_t *);
int nvpair_value_boolean_value(nvpair_t *, boolean_t *);
int nvpair_value_byte(nvpair_t *, uchar_t *);
int nvpair_value_int8(nvpair_t *, int8_t *);
int nvpair_value_uint8(nvpair_t *, uint8_t *);
int nvpair_value_int16(nvpair_t *, int16_t *);
int nvpair_value_uint16(nvpair_t *, uint16_t *);
int nvpair_value_int32(nvpair_t *, int32_t *);
int nvpair_value_uint32(nvpair_t *, uint32_t *);
int nvpair_value_int64(nvpair_t *, int64_t *);
int nvpair_value_uint64(nvpair_t *, uint64_t *);
int nvpair_value_string(nvpair_t *, char **);
int nvpair_value_nvlist(nvpair_t *, nvlist_t **);
int nvpair_value_boolean_array(nvpair_t *, boolean_t **, uint_t *);
int nvpair_value_byte_array(nvpair_t *, uchar_t **, uint_t *);
int nvpair_value_int8_array(nvpair_t *, int8_t **, uint_t *);
int nvpair_value_uint8_array(nvpair_t *, uint8_t **, uint_t *);
int nvpair_value_int16_array(nvpair_t *, int16_t **, uint_t *);
int nvpair_value_uint16_array(nvpair_t *, uint16_t **, uint_t *);
int nvpair_value_int32_array(nvpair_t *, int32_t **, uint_t *);
int nvpair_value_uint32_array(nvpair_t *, uint32_t **, uint_t *);
int nvpair_value_int64_array(nvpair_t *, int64_t **, uint_t *);
int nvpair_value_uint64_array(nvpair_t *, uint64_t **, uint_t *);
int nvpair_value_string_array(nvpair_t *, char ***, uint_t *);
int nvpair_value_nvlist_array(nvpair_t *, nvlist_t ***, uint_t *);
int nvpair_value_hrtime(nvpair_t *, hrtime_t *);
#if !defined(_KERNEL)
int nvpair_value_double(nvpair_t *, double *);
#endif

nvlist_t *fnvlist_alloc(void);
void fnvlist_free(nvlist_t *);
size_t fnvlist_size(nvlist_t *);
char *fnvlist_pack(nvlist_t *, size_t *);
void fnvlist_pack_free(char *, size_t);
nvlist_t *fnvlist_unpack(char *, size_t);
nvlist_t *fnvlist_dup(nvlist_t *);
void fnvlist_merge(nvlist_t *, nvlist_t *);
size_t fnvlist_num_pairs(nvlist_t *);

void fnvlist_add_boolean(nvlist_t *, const char *);
void fnvlist_add_boolean_value(nvlist_t *, const char *, boolean_t);
void fnvlist_add_byte(nvlist_t *, const char *, uchar_t);
void fnvlist_add_int8(nvlist_t *, const char *, int8_t);
void fnvlist_add_uint8(nvlist_t *, const char *, uint8_t);
void fnvlist_add_int16(nvlist_t *, const char *, int16_t);
void fnvlist_add_uint16(nvlist_t *, const char *, uint16_t);
void fnvlist_add_int32(nvlist_t *, const char *, int32_t);
void fnvlist_add_uint32(nvlist_t *, const char *, uint32_t);
void fnvlist_add_int64(nvlist_t *, const char *, int64_t);
void fnvlist_add_uint64(nvlist_t *, const char *, uint64_t);
void fnvlist_add_string(nvlist_t *, const char *, const char *);
void fnvlist_add_nvlist(nvlist_t *, const char *, nvlist_t *);
void fnvlist_add_nvpair(nvlist_t *, nvpair_t *);
void fnvlist_add_boolean_array(nvlist_t *, const char *, boolean_t *, uint_t);
void fnvlist_add_byte_array(nvlist_t *, const char *, uchar_t *, uint_t);
void fnvlist_add_int8_array(nvlist_t *, const char *, int8_t *, uint_t);
void fnvlist_add_uint8_array(nvlist_t *, const char *, uint8_t *, uint_t);
void fnvlist_add_int16_array(nvlist_t *, const char *, int16_t *, uint_t);
void fnvlist_add_uint16_array(nvlist_t *, const char *, uint16_t *, uint_t);
void fnvlist_add_int32_array(nvlist_t *, const char *, int32_t *, uint_t);
void fnvlist_add_uint32_array(nvlist_t *, const char *, uint32_t *, uint_t);
void fnvlist_add_int64_array(nvlist_t *, const char *, int64_t *, uint_t);
void fnvlist_add_uint64_array(nvlist_t *, const char *, uint64_t *, uint_t);
void fnvlist_add_string_array(nvlist_t *, const char *, char * const *, uint_t);
void fnvlist_add_nvlist_array(nvlist_t *, const char *, nvlist_t **, uint_t);

void fnvlist_remove(nvlist_t *, const char *);
void fnvlist_remove_nvpair(nvlist_t *, nvpair_t *);

nvpair_t *fnvlist_lookup_nvpair(nvlist_t *nvl, const char *name);
boolean_t fnvlist_lookup_boolean(nvlist_t *nvl, const char *name);
boolean_t fnvlist_lookup_boolean_value(nvlist_t *nvl, const char *name);
uchar_t fnvlist_lookup_byte(nvlist_t *nvl, const char *name);
int8_t fnvlist_lookup_int8(nvlist_t *nvl, const char *name);
int16_t fnvlist_lookup_int16(nvlist_t *nvl, const char *name);
int32_t fnvlist_lookup_int32(nvlist_t *nvl, const char *name);
int64_t fnvlist_lookup_int64(nvlist_t *nvl, const char *name);
uint8_t fnvlist_lookup_uint8(nvlist_t *nvl, const char *name);
uint16_t fnvlist_lookup_uint16(nvlist_t *nvl, const char *name);
uint32_t fnvlist_lookup_uint32(nvlist_t *nvl, const char *name);
uint64_t fnvlist_lookup_uint64(nvlist_t *nvl, const char *name);
char *fnvlist_lookup_string(nvlist_t *nvl, const char *name);
nvlist_t *fnvlist_lookup_nvlist(nvlist_t *nvl, const char *name);

boolean_t fnvpair_value_boolean_value(nvpair_t *nvp);
uchar_t fnvpair_value_byte(nvpair_t *nvp);
int8_t fnvpair_value_int8(nvpair_t *nvp);
int16_t fnvpair_value_int16(nvpair_t *nvp);
int32_t fnvpair_value_int32(nvpair_t *nvp);
int64_t fnvpair_value_int64(nvpair_t *nvp);
uint8_t fnvpair_value_uint8(nvpair_t *nvp);
uint16_t fnvpair_value_uint16(nvpair_t *nvp);
uint32_t fnvpair_value_uint32(nvpair_t *nvp);
uint64_t fnvpair_value_uint64(nvpair_t *nvp);
char *fnvpair_value_string(nvpair_t *nvp);
nvlist_t *fnvpair_value_nvlist(nvpair_t *nvp);

#ifdef  __cplusplus
}
#endif

#endif  /* _SYS_NVPAIR_H */