1*4882a593Smuzhiyun #ifndef jffs2_private_h
2*4882a593Smuzhiyun #define jffs2_private_h
3*4882a593Smuzhiyun
4*4882a593Smuzhiyun #include <jffs2/jffs2.h>
5*4882a593Smuzhiyun
6*4882a593Smuzhiyun
7*4882a593Smuzhiyun struct b_node {
8*4882a593Smuzhiyun u32 offset;
9*4882a593Smuzhiyun struct b_node *next;
10*4882a593Smuzhiyun enum { CRC_UNKNOWN = 0, CRC_OK, CRC_BAD } datacrc;
11*4882a593Smuzhiyun };
12*4882a593Smuzhiyun
13*4882a593Smuzhiyun struct b_list {
14*4882a593Smuzhiyun struct b_node *listTail;
15*4882a593Smuzhiyun struct b_node *listHead;
16*4882a593Smuzhiyun #ifdef CONFIG_SYS_JFFS2_SORT_FRAGMENTS
17*4882a593Smuzhiyun struct b_node *listLast;
18*4882a593Smuzhiyun int (*listCompare)(struct b_node *new, struct b_node *node);
19*4882a593Smuzhiyun u32 listLoops;
20*4882a593Smuzhiyun #endif
21*4882a593Smuzhiyun u32 listCount;
22*4882a593Smuzhiyun struct mem_block *listMemBase;
23*4882a593Smuzhiyun };
24*4882a593Smuzhiyun
25*4882a593Smuzhiyun struct b_lists {
26*4882a593Smuzhiyun struct b_list dir;
27*4882a593Smuzhiyun struct b_list frag;
28*4882a593Smuzhiyun void *readbuf;
29*4882a593Smuzhiyun };
30*4882a593Smuzhiyun
31*4882a593Smuzhiyun struct b_compr_info {
32*4882a593Smuzhiyun u32 num_frags;
33*4882a593Smuzhiyun u32 compr_sum;
34*4882a593Smuzhiyun u32 decompr_sum;
35*4882a593Smuzhiyun };
36*4882a593Smuzhiyun
37*4882a593Smuzhiyun struct b_jffs2_info {
38*4882a593Smuzhiyun struct b_compr_info compr_info[JFFS2_NUM_COMPR];
39*4882a593Smuzhiyun };
40*4882a593Smuzhiyun
41*4882a593Smuzhiyun static inline int
hdr_crc(struct jffs2_unknown_node * node)42*4882a593Smuzhiyun hdr_crc(struct jffs2_unknown_node *node)
43*4882a593Smuzhiyun {
44*4882a593Smuzhiyun #if 1
45*4882a593Smuzhiyun u32 crc = crc32_no_comp(0, (unsigned char *)node, sizeof(struct jffs2_unknown_node) - 4);
46*4882a593Smuzhiyun #else
47*4882a593Smuzhiyun /* what's the semantics of this? why is this here? */
48*4882a593Smuzhiyun u32 crc = crc32_no_comp(~0, (unsigned char *)node, sizeof(struct jffs2_unknown_node) - 4);
49*4882a593Smuzhiyun
50*4882a593Smuzhiyun crc ^= ~0;
51*4882a593Smuzhiyun #endif
52*4882a593Smuzhiyun if (node->hdr_crc != crc) {
53*4882a593Smuzhiyun return 0;
54*4882a593Smuzhiyun } else {
55*4882a593Smuzhiyun return 1;
56*4882a593Smuzhiyun }
57*4882a593Smuzhiyun }
58*4882a593Smuzhiyun
59*4882a593Smuzhiyun static inline int
dirent_crc(struct jffs2_raw_dirent * node)60*4882a593Smuzhiyun dirent_crc(struct jffs2_raw_dirent *node)
61*4882a593Smuzhiyun {
62*4882a593Smuzhiyun if (node->node_crc != crc32_no_comp(0, (unsigned char *)node, sizeof(struct jffs2_raw_dirent) - 8)) {
63*4882a593Smuzhiyun return 0;
64*4882a593Smuzhiyun } else {
65*4882a593Smuzhiyun return 1;
66*4882a593Smuzhiyun }
67*4882a593Smuzhiyun }
68*4882a593Smuzhiyun
69*4882a593Smuzhiyun static inline int
dirent_name_crc(struct jffs2_raw_dirent * node)70*4882a593Smuzhiyun dirent_name_crc(struct jffs2_raw_dirent *node)
71*4882a593Smuzhiyun {
72*4882a593Smuzhiyun if (node->name_crc != crc32_no_comp(0, (unsigned char *)&(node->name), node->nsize)) {
73*4882a593Smuzhiyun return 0;
74*4882a593Smuzhiyun } else {
75*4882a593Smuzhiyun return 1;
76*4882a593Smuzhiyun }
77*4882a593Smuzhiyun }
78*4882a593Smuzhiyun
79*4882a593Smuzhiyun static inline int
inode_crc(struct jffs2_raw_inode * node)80*4882a593Smuzhiyun inode_crc(struct jffs2_raw_inode *node)
81*4882a593Smuzhiyun {
82*4882a593Smuzhiyun if (node->node_crc != crc32_no_comp(0, (unsigned char *)node, sizeof(struct jffs2_raw_inode) - 8)) {
83*4882a593Smuzhiyun return 0;
84*4882a593Smuzhiyun } else {
85*4882a593Smuzhiyun return 1;
86*4882a593Smuzhiyun }
87*4882a593Smuzhiyun }
88*4882a593Smuzhiyun
89*4882a593Smuzhiyun static inline int
data_crc(struct jffs2_raw_inode * node)90*4882a593Smuzhiyun data_crc(struct jffs2_raw_inode *node)
91*4882a593Smuzhiyun {
92*4882a593Smuzhiyun if (node->data_crc != crc32_no_comp(0, (unsigned char *)
93*4882a593Smuzhiyun ((int) &node->node_crc + sizeof (node->node_crc)),
94*4882a593Smuzhiyun node->csize)) {
95*4882a593Smuzhiyun return 0;
96*4882a593Smuzhiyun } else {
97*4882a593Smuzhiyun return 1;
98*4882a593Smuzhiyun }
99*4882a593Smuzhiyun }
100*4882a593Smuzhiyun
101*4882a593Smuzhiyun #if defined(CONFIG_SYS_JFFS2_SORT_FRAGMENTS)
102*4882a593Smuzhiyun /* External merge sort. */
103*4882a593Smuzhiyun int sort_list(struct b_list *list);
104*4882a593Smuzhiyun #endif
105*4882a593Smuzhiyun #endif /* jffs2_private.h */
106