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Commit | Line | Data |
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5a2543c9 WD |
1 | #ifndef jffs2_private_h |
2 | #define jffs2_private_h | |
3 | ||
4 | #include <jffs2/jffs2.h> | |
5 | ||
06d01dbe | 6 | |
5a2543c9 WD |
7 | struct b_node { |
8 | u32 offset; | |
9 | struct b_node *next; | |
142a80ff | 10 | enum { CRC_UNKNOWN = 0, CRC_OK, CRC_BAD } datacrc; |
5a2543c9 WD |
11 | }; |
12 | ||
06d01dbe WD |
13 | struct b_list { |
14 | struct b_node *listTail; | |
15 | struct b_node *listHead; | |
6d0f6bcf | 16 | #ifdef CONFIG_SYS_JFFS2_SORT_FRAGMENTS |
06d01dbe WD |
17 | struct b_node *listLast; |
18 | int (*listCompare)(struct b_node *new, struct b_node *node); | |
19 | u32 listLoops; | |
20 | #endif | |
21 | u32 listCount; | |
22 | struct mem_block *listMemBase; | |
23 | }; | |
24 | ||
5a2543c9 | 25 | struct b_lists { |
06d01dbe WD |
26 | struct b_list dir; |
27 | struct b_list frag; | |
70741004 | 28 | void *readbuf; |
5a2543c9 | 29 | }; |
06d01dbe | 30 | |
5a2543c9 WD |
31 | struct b_compr_info { |
32 | u32 num_frags; | |
33 | u32 compr_sum; | |
34 | u32 decompr_sum; | |
35 | }; | |
36 | ||
37 | struct b_jffs2_info { | |
38 | struct b_compr_info compr_info[JFFS2_NUM_COMPR]; | |
39 | }; | |
40 | ||
41 | static inline int | |
42 | hdr_crc(struct jffs2_unknown_node *node) | |
43 | { | |
06d01dbe | 44 | #if 1 |
8bde7f77 | 45 | u32 crc = crc32_no_comp(0, (unsigned char *)node, sizeof(struct jffs2_unknown_node) - 4); |
06d01dbe WD |
46 | #else |
47 | /* what's the semantics of this? why is this here? */ | |
8bde7f77 | 48 | u32 crc = crc32_no_comp(~0, (unsigned char *)node, sizeof(struct jffs2_unknown_node) - 4); |
5a2543c9 | 49 | |
8bde7f77 | 50 | crc ^= ~0; |
06d01dbe | 51 | #endif |
8bde7f77 WD |
52 | if (node->hdr_crc != crc) { |
53 | return 0; | |
54 | } else { | |
55 | return 1; | |
56 | } | |
5a2543c9 WD |
57 | } |
58 | ||
59 | static inline int | |
60 | dirent_crc(struct jffs2_raw_dirent *node) | |
61 | { | |
8bde7f77 WD |
62 | if (node->node_crc != crc32_no_comp(0, (unsigned char *)node, sizeof(struct jffs2_raw_dirent) - 8)) { |
63 | return 0; | |
64 | } else { | |
65 | return 1; | |
66 | } | |
5a2543c9 WD |
67 | } |
68 | ||
69 | static inline int | |
70 | dirent_name_crc(struct jffs2_raw_dirent *node) | |
71 | { | |
8bde7f77 WD |
72 | if (node->name_crc != crc32_no_comp(0, (unsigned char *)&(node->name), node->nsize)) { |
73 | return 0; | |
74 | } else { | |
75 | return 1; | |
76 | } | |
5a2543c9 WD |
77 | } |
78 | ||
79 | static inline int | |
80 | inode_crc(struct jffs2_raw_inode *node) | |
81 | { | |
8bde7f77 WD |
82 | if (node->node_crc != crc32_no_comp(0, (unsigned char *)node, sizeof(struct jffs2_raw_inode) - 8)) { |
83 | return 0; | |
84 | } else { | |
85 | return 1; | |
86 | } | |
5a2543c9 WD |
87 | } |
88 | ||
74f92e6a WD |
89 | static inline int |
90 | data_crc(struct jffs2_raw_inode *node) | |
91 | { | |
92 | if (node->data_crc != crc32_no_comp(0, (unsigned char *) | |
09e4b0c5 WD |
93 | ((int) &node->node_crc + sizeof (node->node_crc)), |
94 | node->csize)) { | |
74f92e6a WD |
95 | return 0; |
96 | } else { | |
97 | return 1; | |
98 | } | |
99 | } | |
100 | ||
10d3ac34 MT |
101 | #if defined(CONFIG_SYS_JFFS2_SORT_FRAGMENTS) |
102 | /* External merge sort. */ | |
103 | int sort_list(struct b_list *list); | |
104 | #endif | |
5a2543c9 | 105 | #endif /* jffs2_private.h */ |