1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
|
/*-
* Copyright (c) 2015-2016 Landon Fuller <landonf@FreeBSD.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer,
* without modification.
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
* similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
* redistribution must be conditioned upon including a substantially
* similar Disclaimer requirement for further binary redistribution.
*
* NO WARRANTY
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
* OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
* IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGES.
*
* $FreeBSD$
*/
#ifndef _BHND_NVRAM_BHND_NVRAM_PARSERVAR_H_
#define _BHND_NVRAM_BHND_NVRAM_PARSERVAR_H_
#include <sys/types.h>
#include "bhnd_nvram_common.h"
#include "bhnd_nvram_parser.h"
#define NVRAM_IDX_VAR_THRESH 15 /**< index is generated if minimum variable count is met */
#define NVRAM_IDX_OFFSET_MAX UINT16_MAX /**< maximum indexable offset */
#define NVRAM_IDX_LEN_MAX UINT8_MAX /**< maximum indexable key/value length */
#define NVRAM_KEY_MAX 64 /**< maximum key length (not incl. NUL) */
#define NVRAM_VAL_MAX 255 /**< maximum value length (not incl. NUL) */
#define NVRAM_DEVPATH_STR "devpath" /**< name prefix of device path aliases */
#define NVRAM_DEVPATH_LEN (sizeof(NVRAM_DEVPATH_STR) - 1)
#define NVRAM_SMALL_HASH_SIZE 16 /**< hash table size for pending/default tuples */
/**
* NVRAM devpath record.
*
* Aliases index values to full device paths.
*/
struct bhnd_nvram_devpath {
u_long index; /** alias index */
char *path; /** aliased path */
LIST_ENTRY(bhnd_nvram_devpath) dp_link;
};
/**
* NVRAM index record.
*
* Provides entry offsets into a backing NVRAM buffer.
*/
struct bhnd_nvram_idx_entry {
uint16_t env_offset; /**< offset to env string */
uint8_t key_len; /**< key length */
uint8_t val_len; /**< value length */
};
/**
* NVRAM index.
*
* Provides a compact binary search index into the backing NVRAM buffer.
*/
struct bhnd_nvram_idx {
size_t num_entries; /**< entry count */
struct bhnd_nvram_idx_entry entries[]; /**< index entries */
};
#endif /* _BHND_NVRAM_BHND_NVRAM_PARSERVAR_H_ */
|
