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