File: dirshort.c

package info (click to toggle)
xfsprogs 3.1.7
  • links: PTS
  • area: main
  • in suites: wheezy
  • size: 6,996 kB
  • sloc: ansic: 92,317; sh: 9,970; makefile: 738
file content (132 lines) | stat: -rw-r--r-- 3,459 bytes parent folder | download | duplicates (2)
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
/*
 * Copyright (c) 2000-2001,2005 Silicon Graphics, Inc.
 * All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it would be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write the Free Software Foundation,
 * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */

#include <xfs/libxfs.h>
#include "type.h"
#include "faddr.h"
#include "fprint.h"
#include "field.h"
#include "bit.h"
#include "dirshort.h"

static int	dir_sf_entry_name_count(void *obj, int startoff);
static int	dir_shortform_list_count(void *obj, int startoff);
static int	dir_shortform_list_offset(void *obj, int startoff, int idx);

#define	OFF(f)	bitize(offsetof(xfs_dir_shortform_t, f))
const field_t	dir_shortform_flds[] = {
	{ "hdr", FLDT_DIR_SF_HDR, OI(OFF(hdr)), C1, 0, TYP_NONE },
	{ "list", FLDT_DIR_SF_ENTRY, dir_shortform_list_offset,
	  dir_shortform_list_count, FLD_ARRAY|FLD_COUNT|FLD_OFFSET, TYP_NONE },
	{ NULL }
};

#define	HOFF(f)	bitize(offsetof(xfs_dir_sf_hdr_t, f))
const field_t	dir_sf_hdr_flds[] = {
	{ "parent", FLDT_DIR_INO, OI(HOFF(parent)), C1, 0, TYP_INODE },
	{ "count", FLDT_UINT8D, OI(HOFF(count)), C1, 0, TYP_NONE },
	{ NULL }
};

#define	EOFF(f)	bitize(offsetof(xfs_dir_sf_entry_t, f))
const field_t	dir_sf_entry_flds[] = {
	{ "inumber", FLDT_DIR_INO, OI(EOFF(inumber)), C1, 0, TYP_INODE },
	{ "namelen", FLDT_UINT8D, OI(EOFF(namelen)), C1, 0, TYP_NONE },
	{ "name", FLDT_CHARNS, OI(EOFF(name)), dir_sf_entry_name_count,
	  FLD_COUNT, TYP_NONE },
	{ NULL }
};

static int
dir_sf_entry_name_count(
	void			*obj,
	int			startoff)
{
	xfs_dir_sf_entry_t	*e;

	ASSERT(bitoffs(startoff) == 0);
	e = (xfs_dir_sf_entry_t *)((char *)obj + byteize(startoff));
	return e->namelen;
}

int
dir_sf_entry_size(
	void			*obj,
	int			startoff,
	int			idx)
{
	xfs_dir_sf_entry_t	*e;
	int			i;
	xfs_dir_shortform_t	*sf;

	ASSERT(bitoffs(startoff) == 0);
	sf = (xfs_dir_shortform_t *)((char *)obj + byteize(startoff));
	e = &sf->list[0];
	for (i = 0; i < idx; i++)
		e = xfs_dir_sf_nextentry(e);
	return bitize((int)xfs_dir_sf_entsize_byentry(e));
}

static int
dir_shortform_list_count(
	void			*obj,
	int			startoff)
{
	xfs_dir_shortform_t	*sf;

	ASSERT(bitoffs(startoff) == 0);
	sf = (xfs_dir_shortform_t *)((char *)obj + byteize(startoff));
	return sf->hdr.count;
}

static int
dir_shortform_list_offset(
	void			*obj,
	int			startoff,
	int			idx)
{
	xfs_dir_sf_entry_t	*e;
	int			i;
	xfs_dir_shortform_t	*sf;

	ASSERT(bitoffs(startoff) == 0);
	sf = (xfs_dir_shortform_t *)((char *)obj + byteize(startoff));
	e = &sf->list[0];
	for (i = 0; i < idx; i++)
		e = xfs_dir_sf_nextentry(e);
	return bitize((int)((char *)e - (char *)sf));
}

int
dirshort_size(
	void			*obj,
	int			startoff,
	int			idx)
{
	xfs_dir_sf_entry_t	*e;
	int			i;
	xfs_dir_shortform_t	*sf;

	ASSERT(bitoffs(startoff) == 0);
	ASSERT(idx == 0);
	sf = (xfs_dir_shortform_t *)((char *)obj + byteize(startoff));
	e = &sf->list[0];
	for (i = 0; i < sf->hdr.count; i++)
		e = xfs_dir_sf_nextentry(e);
	return bitize((int)((char *)e - (char *)sf));
}