1#ifndef jffs2_private_h
2#define jffs2_private_h
3
4#include <jffs2/jffs2.h>
5
6
7struct b_node {
8 u32 offset;
9 struct b_node *next;
10 enum { CRC_UNKNOWN = 0, CRC_OK, CRC_BAD } datacrc;
11 u32 version;
12 union {
13 u32 ino;
14 u32 pino;
15 };
16};
17
18struct b_list {
19 struct b_node *listTail;
20 struct b_node *listHead;
21#ifdef CONFIG_SYS_JFFS2_SORT_FRAGMENTS
22 struct b_node *listLast;
23 int (*listCompare)(struct b_node *new, struct b_node *node);
24 u32 listLoops;
25#endif
26 u32 listCount;
27 struct mem_block *listMemBase;
28};
29
30struct b_lists {
31 struct b_list dir;
32 struct b_list frag;
33 void *readbuf;
34};
35
36struct b_compr_info {
37 u32 num_frags;
38 u32 compr_sum;
39 u32 decompr_sum;
40};
41
42struct b_jffs2_info {
43 struct b_compr_info compr_info[JFFS2_NUM_COMPR];
44};
45
46static inline int
47hdr_crc(struct jffs2_unknown_node *node)
48{
49#if 1
50 u32 crc = crc32_no_comp(0, (unsigned char *)node, sizeof(struct jffs2_unknown_node) - 4);
51#else
52
53 u32 crc = crc32_no_comp(~0, (unsigned char *)node, sizeof(struct jffs2_unknown_node) - 4);
54
55 crc ^= ~0;
56#endif
57 if (node->hdr_crc != crc) {
58 return 0;
59 } else {
60 return 1;
61 }
62}
63
64static inline int
65dirent_crc(struct jffs2_raw_dirent *node)
66{
67 if (node->node_crc != crc32_no_comp(0, (unsigned char *)node, sizeof(struct jffs2_raw_dirent) - 8)) {
68 return 0;
69 } else {
70 return 1;
71 }
72}
73
74static inline int
75dirent_name_crc(struct jffs2_raw_dirent *node)
76{
77 if (node->name_crc != crc32_no_comp(0, (unsigned char *)&(node->name), node->nsize)) {
78 return 0;
79 } else {
80 return 1;
81 }
82}
83
84static inline int
85inode_crc(struct jffs2_raw_inode *node)
86{
87 if (node->node_crc != crc32_no_comp(0, (unsigned char *)node, sizeof(struct jffs2_raw_inode) - 8)) {
88 return 0;
89 } else {
90 return 1;
91 }
92}
93
94static inline int
95data_crc(struct jffs2_raw_inode *node)
96{
97 if (node->data_crc != crc32_no_comp(0, (unsigned char *)
98 ((int) &node->node_crc + sizeof (node->node_crc)),
99 node->csize)) {
100 return 0;
101 } else {
102 return 1;
103 }
104}
105
106#if defined(CONFIG_SYS_JFFS2_SORT_FRAGMENTS)
107
108int sort_list(struct b_list *list);
109#endif
110#endif
111