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https://github.com/brain-hackers/u-boot-brain
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69dbebd1f7
The inode list uses version and ino, the dirent list uses version and pino. This information is collected during scanning, reducing accesses to flash and significantly speeding up ls and read. Signed-off-by: Petr Borsodi <petr.borsodi@i.cz>
111 lines
2.1 KiB
C
111 lines
2.1 KiB
C
#ifndef jffs2_private_h
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#define jffs2_private_h
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#include <jffs2/jffs2.h>
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struct b_node {
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u32 offset;
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struct b_node *next;
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enum { CRC_UNKNOWN = 0, CRC_OK, CRC_BAD } datacrc;
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u32 version;
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union {
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u32 ino; /* for inodes */
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u32 pino; /* for dirents */
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};
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};
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struct b_list {
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struct b_node *listTail;
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struct b_node *listHead;
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#ifdef CONFIG_SYS_JFFS2_SORT_FRAGMENTS
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struct b_node *listLast;
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int (*listCompare)(struct b_node *new, struct b_node *node);
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u32 listLoops;
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#endif
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u32 listCount;
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struct mem_block *listMemBase;
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};
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struct b_lists {
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struct b_list dir;
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struct b_list frag;
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void *readbuf;
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};
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struct b_compr_info {
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u32 num_frags;
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u32 compr_sum;
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u32 decompr_sum;
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};
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struct b_jffs2_info {
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struct b_compr_info compr_info[JFFS2_NUM_COMPR];
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};
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static inline int
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hdr_crc(struct jffs2_unknown_node *node)
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{
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#if 1
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u32 crc = crc32_no_comp(0, (unsigned char *)node, sizeof(struct jffs2_unknown_node) - 4);
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#else
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/* what's the semantics of this? why is this here? */
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u32 crc = crc32_no_comp(~0, (unsigned char *)node, sizeof(struct jffs2_unknown_node) - 4);
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crc ^= ~0;
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#endif
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if (node->hdr_crc != crc) {
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return 0;
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} else {
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return 1;
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}
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}
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static inline int
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dirent_crc(struct jffs2_raw_dirent *node)
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{
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if (node->node_crc != crc32_no_comp(0, (unsigned char *)node, sizeof(struct jffs2_raw_dirent) - 8)) {
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return 0;
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} else {
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return 1;
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}
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}
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static inline int
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dirent_name_crc(struct jffs2_raw_dirent *node)
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{
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if (node->name_crc != crc32_no_comp(0, (unsigned char *)&(node->name), node->nsize)) {
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return 0;
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} else {
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return 1;
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}
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}
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static inline int
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inode_crc(struct jffs2_raw_inode *node)
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{
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if (node->node_crc != crc32_no_comp(0, (unsigned char *)node, sizeof(struct jffs2_raw_inode) - 8)) {
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return 0;
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} else {
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return 1;
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}
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}
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static inline int
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data_crc(struct jffs2_raw_inode *node)
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{
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if (node->data_crc != crc32_no_comp(0, (unsigned char *)
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((int) &node->node_crc + sizeof (node->node_crc)),
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node->csize)) {
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return 0;
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} else {
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return 1;
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}
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}
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#if defined(CONFIG_SYS_JFFS2_SORT_FRAGMENTS)
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/* External merge sort. */
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int sort_list(struct b_list *list);
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#endif
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#endif /* jffs2_private.h */
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