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
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
|
// distribution boxbackup-0.11rc2 (svn version: 2072)
//
// Copyright (c) 2003 - 2008
// Ben Summers and contributors. 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.
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// 3. All use of this software and associated advertising materials must
// display the following acknowledgment:
// This product includes software developed by Ben Summers.
// 4. The names of the Authors may not be used to endorse or promote
// products derived from this software without specific prior written
// permission.
//
// [Where legally impermissible the Authors do not disclaim liability for
// direct physical injury or death caused solely by defects in the software
// unless it is modified by a third party.]
//
// THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
// IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT,
// INDIRECT, INCIDENTAL, 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 DAMAGE.
//
//
//
// --------------------------------------------------------------------------
//
// File
// Name: RaidFileUtil.h
// Purpose: Utilities for the raid file classes
// Created: 2003/07/11
//
// --------------------------------------------------------------------------
#ifndef RAIDFILEUTIL__H
#define RAIDFILEUTIL__H
#include "RaidFileController.h"
#include "RaidFileException.h"
// note: these are hardcoded into the directory searching code
#define RAIDFILE_EXTENSION ".rf"
#define RAIDFILE_WRITE_EXTENSION ".rfw"
// --------------------------------------------------------------------------
//
// Class
// Name: RaidFileUtil
// Purpose: Utility functions for RaidFile classes
// Created: 2003/07/11
//
// --------------------------------------------------------------------------
class RaidFileUtil
{
public:
typedef enum
{
NoFile = 0,
NonRaid = 1,
AsRaid = 2,
AsRaidWithMissingReadable = 3,
AsRaidWithMissingNotRecoverable = 4
} ExistType;
typedef enum
{
Stripe1Exists = 1,
Stripe2Exists = 2,
ParityExists = 4
};
static ExistType RaidFileExists(RaidFileDiscSet &rDiscSet, const std::string &rFilename, int *pStartDisc = 0, int *pExisitingFiles = 0, int64_t *pRevisionID = 0);
static int64_t DiscUsageInBlocks(int64_t FileSize, const RaidFileDiscSet &rDiscSet);
// --------------------------------------------------------------------------
//
// Function
// Name: std::string MakeRaidComponentName(RaidFileDiscSet &, const std::string &, int)
// Purpose: Returns the OS filename for a file of part of a disc set
// Created: 2003/07/11
//
// --------------------------------------------------------------------------
static inline std::string MakeRaidComponentName(RaidFileDiscSet &rDiscSet, const std::string &rFilename, int Disc)
{
if(Disc < 0 || Disc >= (int)rDiscSet.size())
{
THROW_EXCEPTION(RaidFileException, NoSuchDiscSet)
}
std::string r(rDiscSet[Disc]);
r += DIRECTORY_SEPARATOR_ASCHAR;
r += rFilename;
r += RAIDFILE_EXTENSION;
return r;
}
// --------------------------------------------------------------------------
//
// Function
// Name: std::string MakeWriteFileName(RaidFileDiscSet &, const std::string &)
// Purpose: Returns the OS filename for the temporary write file
// Created: 2003/07/11
//
// --------------------------------------------------------------------------
static inline std::string MakeWriteFileName(RaidFileDiscSet &rDiscSet, const std::string &rFilename, int *pOnDiscSet = 0)
{
int livesOnSet = rDiscSet.GetSetNumForWriteFiles(rFilename);
// does the caller want to know which set it's on?
if(pOnDiscSet) *pOnDiscSet = livesOnSet;
// Make the string
std::string r(rDiscSet[livesOnSet]);
r += DIRECTORY_SEPARATOR_ASCHAR;
r += rFilename;
r += RAIDFILE_WRITE_EXTENSION;
return r;
}
};
#endif // RAIDFILEUTIL__H
|
