mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-30 22:08:52 +09:00
1031 lines
25 KiB
C
1031 lines
25 KiB
C
#include <common.h>
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#include <malloc.h>
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#include <linux/stat.h>
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#include <linux/time.h>
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#include <jffs2/jffs2.h>
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#include <jffs2/jffs2_1pass.h>
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#include <nand.h>
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#include "jffs2_nand_private.h"
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#define NODE_CHUNK 1024 /* size of memory allocation chunk in b_nodes */
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/* Debugging switches */
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#undef DEBUG_DIRENTS /* print directory entry list after scan */
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#undef DEBUG_FRAGMENTS /* print fragment list after scan */
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#undef DEBUG /* enable debugging messages */
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#ifdef DEBUG
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# define DEBUGF(fmt,args...) printf(fmt ,##args)
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#else
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# define DEBUGF(fmt,args...)
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#endif
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static nand_info_t *nand;
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/* Compression names */
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static char *compr_names[] = {
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"NONE",
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"ZERO",
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"RTIME",
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"RUBINMIPS",
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"COPY",
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"DYNRUBIN",
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"ZLIB",
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#if defined(CONFIG_JFFS2_LZO)
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"LZO",
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#endif
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};
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/* Spinning wheel */
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static char spinner[] = { '|', '/', '-', '\\' };
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/* Memory management */
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struct mem_block {
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unsigned index;
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struct mem_block *next;
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char nodes[0];
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};
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static void
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free_nodes(struct b_list *list)
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{
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while (list->listMemBase != NULL) {
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struct mem_block *next = list->listMemBase->next;
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free(list->listMemBase);
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list->listMemBase = next;
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}
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}
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static struct b_node *
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add_node(struct b_list *list, int size)
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{
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u32 index = 0;
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struct mem_block *memBase;
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struct b_node *b;
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memBase = list->listMemBase;
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if (memBase != NULL)
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index = memBase->index;
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if (memBase == NULL || index >= NODE_CHUNK) {
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/* we need more space before we continue */
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memBase = mmalloc(sizeof(struct mem_block) + NODE_CHUNK * size);
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if (memBase == NULL) {
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putstr("add_node: malloc failed\n");
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return NULL;
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}
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memBase->next = list->listMemBase;
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index = 0;
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}
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/* now we have room to add it. */
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b = (struct b_node *)&memBase->nodes[size * index];
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index ++;
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memBase->index = index;
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list->listMemBase = memBase;
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list->listCount++;
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return b;
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}
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static struct b_node *
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insert_node(struct b_list *list, struct b_node *new)
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{
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#ifdef CONFIG_SYS_JFFS2_SORT_FRAGMENTS
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struct b_node *b, *prev;
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if (list->listTail != NULL && list->listCompare(new, list->listTail))
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prev = list->listTail;
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else if (list->listLast != NULL && list->listCompare(new, list->listLast))
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prev = list->listLast;
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else
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prev = NULL;
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for (b = (prev ? prev->next : list->listHead);
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b != NULL && list->listCompare(new, b);
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prev = b, b = b->next) {
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list->listLoops++;
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}
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if (b != NULL)
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list->listLast = prev;
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if (b != NULL) {
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new->next = b;
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if (prev != NULL)
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prev->next = new;
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else
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list->listHead = new;
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} else
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#endif
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{
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new->next = (struct b_node *) NULL;
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if (list->listTail != NULL) {
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list->listTail->next = new;
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list->listTail = new;
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} else {
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list->listTail = list->listHead = new;
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}
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}
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return new;
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}
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static struct b_node *
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insert_inode(struct b_list *list, struct jffs2_raw_inode *node, u32 offset)
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{
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struct b_inode *new;
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if (!(new = (struct b_inode *)add_node(list, sizeof(struct b_inode)))) {
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putstr("add_node failed!\r\n");
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return NULL;
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}
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new->offset = offset;
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new->version = node->version;
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new->ino = node->ino;
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new->isize = node->isize;
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new->csize = node->csize;
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return insert_node(list, (struct b_node *)new);
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}
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static struct b_node *
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insert_dirent(struct b_list *list, struct jffs2_raw_dirent *node, u32 offset)
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{
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struct b_dirent *new;
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if (!(new = (struct b_dirent *)add_node(list, sizeof(struct b_dirent)))) {
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putstr("add_node failed!\r\n");
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return NULL;
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}
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new->offset = offset;
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new->version = node->version;
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new->pino = node->pino;
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new->ino = node->ino;
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new->nhash = full_name_hash(node->name, node->nsize);
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new->nsize = node->nsize;
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new->type = node->type;
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return insert_node(list, (struct b_node *)new);
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}
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#ifdef CONFIG_SYS_JFFS2_SORT_FRAGMENTS
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/* Sort data entries with the latest version last, so that if there
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* is overlapping data the latest version will be used.
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*/
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static int compare_inodes(struct b_node *new, struct b_node *old)
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{
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struct jffs2_raw_inode ojNew;
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struct jffs2_raw_inode ojOld;
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struct jffs2_raw_inode *jNew =
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(struct jffs2_raw_inode *)get_fl_mem(new->offset, sizeof(ojNew), &ojNew);
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struct jffs2_raw_inode *jOld =
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(struct jffs2_raw_inode *)get_fl_mem(old->offset, sizeof(ojOld), &ojOld);
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return jNew->version > jOld->version;
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}
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/* Sort directory entries so all entries in the same directory
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* with the same name are grouped together, with the latest version
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* last. This makes it easy to eliminate all but the latest version
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* by marking the previous version dead by setting the inode to 0.
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*/
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static int compare_dirents(struct b_node *new, struct b_node *old)
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{
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struct jffs2_raw_dirent ojNew;
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struct jffs2_raw_dirent ojOld;
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struct jffs2_raw_dirent *jNew =
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(struct jffs2_raw_dirent *)get_fl_mem(new->offset, sizeof(ojNew), &ojNew);
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struct jffs2_raw_dirent *jOld =
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(struct jffs2_raw_dirent *)get_fl_mem(old->offset, sizeof(ojOld), &ojOld);
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int cmp;
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/* ascending sort by pino */
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if (jNew->pino != jOld->pino)
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return jNew->pino > jOld->pino;
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/* pino is the same, so use ascending sort by nsize, so
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* we don't do strncmp unless we really must.
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*/
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if (jNew->nsize != jOld->nsize)
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return jNew->nsize > jOld->nsize;
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/* length is also the same, so use ascending sort by name
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*/
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cmp = strncmp(jNew->name, jOld->name, jNew->nsize);
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if (cmp != 0)
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return cmp > 0;
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/* we have duplicate names in this directory, so use ascending
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* sort by version
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*/
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if (jNew->version > jOld->version) {
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/* since jNew is newer, we know jOld is not valid, so
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* mark it with inode 0 and it will not be used
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*/
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jOld->ino = 0;
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return 1;
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}
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return 0;
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}
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#endif
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static u32
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jffs_init_1pass_list(struct part_info *part)
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{
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struct b_lists *pL;
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if (part->jffs2_priv != NULL) {
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pL = (struct b_lists *)part->jffs2_priv;
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free_nodes(&pL->frag);
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free_nodes(&pL->dir);
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free(pL);
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}
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if (NULL != (part->jffs2_priv = malloc(sizeof(struct b_lists)))) {
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pL = (struct b_lists *)part->jffs2_priv;
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memset(pL, 0, sizeof(*pL));
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#ifdef CONFIG_SYS_JFFS2_SORT_FRAGMENTS
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pL->dir.listCompare = compare_dirents;
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pL->frag.listCompare = compare_inodes;
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#endif
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}
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return 0;
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}
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/* find the inode from the slashless name given a parent */
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static long
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jffs2_1pass_read_inode(struct b_lists *pL, u32 ino, char *dest,
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struct stat *stat)
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{
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struct b_inode *jNode;
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u32 totalSize = 0;
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u32 latestVersion = 0;
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long ret;
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#ifdef CONFIG_SYS_JFFS2_SORT_FRAGMENTS
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/* Find file size before loading any data, so fragments that
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* start past the end of file can be ignored. A fragment
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* that is partially in the file is loaded, so extra data may
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* be loaded up to the next 4K boundary above the file size.
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* This shouldn't cause trouble when loading kernel images, so
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* we will live with it.
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*/
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for (jNode = (struct b_inode *)pL->frag.listHead; jNode; jNode = jNode->next) {
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if ((ino == jNode->ino)) {
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/* get actual file length from the newest node */
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if (jNode->version >= latestVersion) {
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totalSize = jNode->isize;
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latestVersion = jNode->version;
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}
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}
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}
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#endif
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for (jNode = (struct b_inode *)pL->frag.listHead; jNode; jNode = jNode->next) {
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if ((ino != jNode->ino))
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continue;
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#ifndef CONFIG_SYS_JFFS2_SORT_FRAGMENTS
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/* get actual file length from the newest node */
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if (jNode->version >= latestVersion) {
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totalSize = jNode->isize;
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latestVersion = jNode->version;
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}
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#endif
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if (dest || stat) {
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char *src, *dst;
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char data[4096 + sizeof(struct jffs2_raw_inode)];
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struct jffs2_raw_inode *inode;
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size_t len;
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inode = (struct jffs2_raw_inode *)&data;
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len = sizeof(struct jffs2_raw_inode);
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if (dest)
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len += jNode->csize;
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nand_read(nand, jNode->offset, &len, inode);
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/* ignore data behind latest known EOF */
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if (inode->offset > totalSize)
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continue;
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if (stat) {
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stat->st_mtime = inode->mtime;
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stat->st_mode = inode->mode;
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stat->st_ino = inode->ino;
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stat->st_size = totalSize;
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}
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if (!dest)
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continue;
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src = ((char *) inode) + sizeof(struct jffs2_raw_inode);
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dst = (char *) (dest + inode->offset);
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switch (inode->compr) {
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case JFFS2_COMPR_NONE:
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ret = 0;
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memcpy(dst, src, inode->dsize);
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break;
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case JFFS2_COMPR_ZERO:
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ret = 0;
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memset(dst, 0, inode->dsize);
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break;
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case JFFS2_COMPR_RTIME:
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ret = 0;
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rtime_decompress(src, dst, inode->csize, inode->dsize);
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break;
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case JFFS2_COMPR_DYNRUBIN:
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/* this is slow but it works */
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ret = 0;
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dynrubin_decompress(src, dst, inode->csize, inode->dsize);
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break;
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case JFFS2_COMPR_ZLIB:
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ret = zlib_decompress(src, dst, inode->csize, inode->dsize);
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break;
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#if defined(CONFIG_JFFS2_LZO)
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case JFFS2_COMPR_LZO:
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ret = lzo_decompress(src, dst, inode->csize, inode->dsize);
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break;
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#endif
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default:
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/* unknown */
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putLabeledWord("UNKNOWN COMPRESSION METHOD = ", inode->compr);
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return -1;
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}
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}
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}
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return totalSize;
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}
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/* find the inode from the slashless name given a parent */
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static u32
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jffs2_1pass_find_inode(struct b_lists * pL, const char *name, u32 pino)
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{
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struct b_dirent *jDir;
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int len = strlen(name); /* name is assumed slash free */
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unsigned int nhash = full_name_hash(name, len);
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u32 version = 0;
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u32 inode = 0;
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/* we need to search all and return the inode with the highest version */
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for (jDir = (struct b_dirent *)pL->dir.listHead; jDir; jDir = jDir->next) {
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if ((pino == jDir->pino) && (jDir->ino) && /* 0 for unlink */
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(len == jDir->nsize) && (nhash == jDir->nhash)) {
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/* TODO: compare name */
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if (jDir->version < version)
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continue;
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if (jDir->version == version && inode != 0) {
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/* I'm pretty sure this isn't legal */
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putstr(" ** ERROR ** ");
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/* putnstr(jDir->name, jDir->nsize); */
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/* putLabeledWord(" has dup version =", version); */
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}
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inode = jDir->ino;
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version = jDir->version;
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}
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}
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return inode;
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}
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char *mkmodestr(unsigned long mode, char *str)
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{
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static const char *l = "xwr";
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int mask = 1, i;
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char c;
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switch (mode & S_IFMT) {
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case S_IFDIR: str[0] = 'd'; break;
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case S_IFBLK: str[0] = 'b'; break;
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case S_IFCHR: str[0] = 'c'; break;
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case S_IFIFO: str[0] = 'f'; break;
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case S_IFLNK: str[0] = 'l'; break;
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case S_IFSOCK: str[0] = 's'; break;
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case S_IFREG: str[0] = '-'; break;
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default: str[0] = '?';
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}
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for(i = 0; i < 9; i++) {
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c = l[i%3];
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str[9-i] = (mode & mask)?c:'-';
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mask = mask<<1;
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}
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if(mode & S_ISUID) str[3] = (mode & S_IXUSR)?'s':'S';
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if(mode & S_ISGID) str[6] = (mode & S_IXGRP)?'s':'S';
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if(mode & S_ISVTX) str[9] = (mode & S_IXOTH)?'t':'T';
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str[10] = '\0';
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return str;
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}
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static inline void dump_stat(struct stat *st, const char *name)
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{
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char str[20];
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char s[64], *p;
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if (st->st_mtime == (time_t)(-1)) /* some ctimes really hate -1 */
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st->st_mtime = 1;
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ctime_r(&st->st_mtime, s/*,64*/); /* newlib ctime doesn't have buflen */
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if ((p = strchr(s,'\n')) != NULL) *p = '\0';
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if ((p = strchr(s,'\r')) != NULL) *p = '\0';
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/*
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printf("%6lo %s %8ld %s %s\n", st->st_mode, mkmodestr(st->st_mode, str),
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st->st_size, s, name);
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*/
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printf(" %s %8ld %s %s", mkmodestr(st->st_mode,str), st->st_size, s, name);
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}
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static inline int
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dump_inode(struct b_lists *pL, struct b_dirent *d, struct b_inode *i)
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{
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char fname[JFFS2_MAX_NAME_LEN + 1];
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struct stat st;
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size_t len;
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if(!d || !i) return -1;
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len = d->nsize;
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nand_read(nand, d->offset + sizeof(struct jffs2_raw_dirent),
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&len, &fname);
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fname[d->nsize] = '\0';
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memset(&st, 0, sizeof(st));
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jffs2_1pass_read_inode(pL, i->ino, NULL, &st);
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dump_stat(&st, fname);
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/* FIXME
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if (d->type == DT_LNK) {
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unsigned char *src = (unsigned char *) (&i[1]);
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putstr(" -> ");
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putnstr(src, (int)i->dsize);
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}
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*/
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putstr("\r\n");
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return 0;
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}
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/* list inodes with the given pino */
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static u32
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jffs2_1pass_list_inodes(struct b_lists * pL, u32 pino)
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{
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struct b_dirent *jDir;
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u32 i_version = 0;
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for (jDir = (struct b_dirent *)pL->dir.listHead; jDir; jDir = jDir->next) {
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if ((pino == jDir->pino) && (jDir->ino)) { /* ino=0 -> unlink */
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struct b_inode *jNode = (struct b_inode *)pL->frag.listHead;
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struct b_inode *i = NULL;
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while (jNode) {
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if (jNode->ino == jDir->ino && jNode->version >= i_version) {
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i_version = jNode->version;
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i = jNode;
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}
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jNode = jNode->next;
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}
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dump_inode(pL, jDir, i);
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}
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}
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return pino;
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}
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static u32
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jffs2_1pass_search_inode(struct b_lists * pL, const char *fname, u32 pino)
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{
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int i;
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char tmp[256];
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char working_tmp[256];
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char *c;
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/* discard any leading slash */
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i = 0;
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while (fname[i] == '/')
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i++;
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strcpy(tmp, &fname[i]);
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|
|
while ((c = (char *) strchr(tmp, '/'))) /* we are still dired searching */
|
|
{
|
|
strncpy(working_tmp, tmp, c - tmp);
|
|
working_tmp[c - tmp] = '\0';
|
|
#if 0
|
|
putstr("search_inode: tmp = ");
|
|
putstr(tmp);
|
|
putstr("\r\n");
|
|
putstr("search_inode: wtmp = ");
|
|
putstr(working_tmp);
|
|
putstr("\r\n");
|
|
putstr("search_inode: c = ");
|
|
putstr(c);
|
|
putstr("\r\n");
|
|
#endif
|
|
for (i = 0; i < strlen(c) - 1; i++)
|
|
tmp[i] = c[i + 1];
|
|
tmp[i] = '\0';
|
|
#if 0
|
|
putstr("search_inode: post tmp = ");
|
|
putstr(tmp);
|
|
putstr("\r\n");
|
|
#endif
|
|
|
|
if (!(pino = jffs2_1pass_find_inode(pL, working_tmp, pino))) {
|
|
putstr("find_inode failed for name=");
|
|
putstr(working_tmp);
|
|
putstr("\r\n");
|
|
return 0;
|
|
}
|
|
}
|
|
/* this is for the bare filename, directories have already been mapped */
|
|
if (!(pino = jffs2_1pass_find_inode(pL, tmp, pino))) {
|
|
putstr("find_inode failed for name=");
|
|
putstr(tmp);
|
|
putstr("\r\n");
|
|
return 0;
|
|
}
|
|
return pino;
|
|
|
|
}
|
|
|
|
static u32
|
|
jffs2_1pass_resolve_inode(struct b_lists * pL, u32 ino)
|
|
{
|
|
struct b_dirent *jDir;
|
|
struct b_inode *jNode;
|
|
u8 jDirFoundType = 0;
|
|
u32 jDirFoundIno = 0;
|
|
u32 jDirFoundPino = 0;
|
|
char tmp[JFFS2_MAX_NAME_LEN + 1];
|
|
u32 version = 0;
|
|
u32 pino;
|
|
|
|
/* we need to search all and return the inode with the highest version */
|
|
for (jDir = (struct b_dirent *)pL->dir.listHead; jDir; jDir = jDir->next) {
|
|
if (ino == jDir->ino) {
|
|
if (jDir->version < version)
|
|
continue;
|
|
|
|
if (jDir->version == version && jDirFoundType) {
|
|
/* I'm pretty sure this isn't legal */
|
|
putstr(" ** ERROR ** ");
|
|
/* putnstr(jDir->name, jDir->nsize); */
|
|
/* putLabeledWord(" has dup version (resolve) = ", */
|
|
/* version); */
|
|
}
|
|
|
|
jDirFoundType = jDir->type;
|
|
jDirFoundIno = jDir->ino;
|
|
jDirFoundPino = jDir->pino;
|
|
version = jDir->version;
|
|
}
|
|
}
|
|
/* now we found the right entry again. (shoulda returned inode*) */
|
|
if (jDirFoundType != DT_LNK)
|
|
return jDirFoundIno;
|
|
|
|
/* it's a soft link so we follow it again. */
|
|
for (jNode = (struct b_inode *)pL->frag.listHead; jNode; jNode = jNode->next) {
|
|
if (jNode->ino == jDirFoundIno) {
|
|
size_t len = jNode->csize;
|
|
nand_read(nand, jNode->offset + sizeof(struct jffs2_raw_inode), &len, &tmp);
|
|
tmp[jNode->csize] = '\0';
|
|
break;
|
|
}
|
|
}
|
|
/* ok so the name of the new file to find is in tmp */
|
|
/* if it starts with a slash it is root based else shared dirs */
|
|
if (tmp[0] == '/')
|
|
pino = 1;
|
|
else
|
|
pino = jDirFoundPino;
|
|
|
|
return jffs2_1pass_search_inode(pL, tmp, pino);
|
|
}
|
|
|
|
static u32
|
|
jffs2_1pass_search_list_inodes(struct b_lists * pL, const char *fname, u32 pino)
|
|
{
|
|
int i;
|
|
char tmp[256];
|
|
char working_tmp[256];
|
|
char *c;
|
|
|
|
/* discard any leading slash */
|
|
i = 0;
|
|
while (fname[i] == '/')
|
|
i++;
|
|
strcpy(tmp, &fname[i]);
|
|
working_tmp[0] = '\0';
|
|
while ((c = (char *) strchr(tmp, '/'))) /* we are still dired searching */
|
|
{
|
|
strncpy(working_tmp, tmp, c - tmp);
|
|
working_tmp[c - tmp] = '\0';
|
|
for (i = 0; i < strlen(c) - 1; i++)
|
|
tmp[i] = c[i + 1];
|
|
tmp[i] = '\0';
|
|
/* only a failure if we arent looking at top level */
|
|
if (!(pino = jffs2_1pass_find_inode(pL, working_tmp, pino)) &&
|
|
(working_tmp[0])) {
|
|
putstr("find_inode failed for name=");
|
|
putstr(working_tmp);
|
|
putstr("\r\n");
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
if (tmp[0] && !(pino = jffs2_1pass_find_inode(pL, tmp, pino))) {
|
|
putstr("find_inode failed for name=");
|
|
putstr(tmp);
|
|
putstr("\r\n");
|
|
return 0;
|
|
}
|
|
/* this is for the bare filename, directories have already been mapped */
|
|
if (!(pino = jffs2_1pass_list_inodes(pL, pino))) {
|
|
putstr("find_inode failed for name=");
|
|
putstr(tmp);
|
|
putstr("\r\n");
|
|
return 0;
|
|
}
|
|
return pino;
|
|
|
|
}
|
|
|
|
unsigned char
|
|
jffs2_1pass_rescan_needed(struct part_info *part)
|
|
{
|
|
struct b_node *b;
|
|
struct jffs2_unknown_node onode;
|
|
struct jffs2_unknown_node *node;
|
|
struct b_lists *pL = (struct b_lists *)part->jffs2_priv;
|
|
|
|
if (part->jffs2_priv == 0){
|
|
DEBUGF ("rescan: First time in use\n");
|
|
return 1;
|
|
}
|
|
/* if we have no list, we need to rescan */
|
|
if (pL->frag.listCount == 0) {
|
|
DEBUGF ("rescan: fraglist zero\n");
|
|
return 1;
|
|
}
|
|
|
|
/* or if we are scanning a new partition */
|
|
if (pL->partOffset != part->offset) {
|
|
DEBUGF ("rescan: different partition\n");
|
|
return 1;
|
|
}
|
|
|
|
/* FIXME */
|
|
#if 0
|
|
/* but suppose someone reflashed a partition at the same offset... */
|
|
b = pL->dir.listHead;
|
|
while (b) {
|
|
node = (struct jffs2_unknown_node *) get_fl_mem(b->offset,
|
|
sizeof(onode), &onode);
|
|
if (node->nodetype != JFFS2_NODETYPE_DIRENT) {
|
|
DEBUGF ("rescan: fs changed beneath me? (%lx)\n",
|
|
(unsigned long) b->offset);
|
|
return 1;
|
|
}
|
|
b = b->next;
|
|
}
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
#ifdef DEBUG_FRAGMENTS
|
|
static void
|
|
dump_fragments(struct b_lists *pL)
|
|
{
|
|
struct b_node *b;
|
|
struct jffs2_raw_inode ojNode;
|
|
struct jffs2_raw_inode *jNode;
|
|
|
|
putstr("\r\n\r\n******The fragment Entries******\r\n");
|
|
b = pL->frag.listHead;
|
|
while (b) {
|
|
jNode = (struct jffs2_raw_inode *) get_fl_mem(b->offset,
|
|
sizeof(ojNode), &ojNode);
|
|
putLabeledWord("\r\n\tbuild_list: FLASH_OFFSET = ", b->offset);
|
|
putLabeledWord("\tbuild_list: totlen = ", jNode->totlen);
|
|
putLabeledWord("\tbuild_list: inode = ", jNode->ino);
|
|
putLabeledWord("\tbuild_list: version = ", jNode->version);
|
|
putLabeledWord("\tbuild_list: isize = ", jNode->isize);
|
|
putLabeledWord("\tbuild_list: atime = ", jNode->atime);
|
|
putLabeledWord("\tbuild_list: offset = ", jNode->offset);
|
|
putLabeledWord("\tbuild_list: csize = ", jNode->csize);
|
|
putLabeledWord("\tbuild_list: dsize = ", jNode->dsize);
|
|
putLabeledWord("\tbuild_list: compr = ", jNode->compr);
|
|
putLabeledWord("\tbuild_list: usercompr = ", jNode->usercompr);
|
|
putLabeledWord("\tbuild_list: flags = ", jNode->flags);
|
|
putLabeledWord("\tbuild_list: offset = ", b->offset); /* FIXME: ? [RS] */
|
|
b = b->next;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
#ifdef DEBUG_DIRENTS
|
|
static void
|
|
dump_dirents(struct b_lists *pL)
|
|
{
|
|
struct b_node *b;
|
|
struct jffs2_raw_dirent *jDir;
|
|
|
|
putstr("\r\n\r\n******The directory Entries******\r\n");
|
|
b = pL->dir.listHead;
|
|
while (b) {
|
|
jDir = (struct jffs2_raw_dirent *) get_node_mem(b->offset);
|
|
putstr("\r\n");
|
|
putnstr(jDir->name, jDir->nsize);
|
|
putLabeledWord("\r\n\tbuild_list: magic = ", jDir->magic);
|
|
putLabeledWord("\tbuild_list: nodetype = ", jDir->nodetype);
|
|
putLabeledWord("\tbuild_list: hdr_crc = ", jDir->hdr_crc);
|
|
putLabeledWord("\tbuild_list: pino = ", jDir->pino);
|
|
putLabeledWord("\tbuild_list: version = ", jDir->version);
|
|
putLabeledWord("\tbuild_list: ino = ", jDir->ino);
|
|
putLabeledWord("\tbuild_list: mctime = ", jDir->mctime);
|
|
putLabeledWord("\tbuild_list: nsize = ", jDir->nsize);
|
|
putLabeledWord("\tbuild_list: type = ", jDir->type);
|
|
putLabeledWord("\tbuild_list: node_crc = ", jDir->node_crc);
|
|
putLabeledWord("\tbuild_list: name_crc = ", jDir->name_crc);
|
|
putLabeledWord("\tbuild_list: offset = ", b->offset); /* FIXME: ? [RS] */
|
|
b = b->next;
|
|
put_fl_mem(jDir);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
static int
|
|
jffs2_fill_scan_buf(nand_info_t *nand, unsigned char *buf,
|
|
unsigned ofs, unsigned len)
|
|
{
|
|
int ret;
|
|
unsigned olen;
|
|
|
|
olen = len;
|
|
ret = nand_read(nand, ofs, &olen, buf);
|
|
if (ret) {
|
|
printf("nand_read(0x%x bytes from 0x%x) returned %d\n", len, ofs, ret);
|
|
return ret;
|
|
}
|
|
if (olen < len) {
|
|
printf("Read at 0x%x gave only 0x%x bytes\n", ofs, olen);
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
#define EMPTY_SCAN_SIZE 1024
|
|
static u32
|
|
jffs2_1pass_build_lists(struct part_info * part)
|
|
{
|
|
struct b_lists *pL;
|
|
struct jffs2_unknown_node *node;
|
|
unsigned nr_blocks, sectorsize, ofs, offset;
|
|
char *buf;
|
|
int i;
|
|
u32 counter = 0;
|
|
u32 counter4 = 0;
|
|
u32 counterF = 0;
|
|
u32 counterN = 0;
|
|
|
|
struct mtdids *id = part->dev->id;
|
|
nand = nand_info + id->num;
|
|
|
|
/* if we are building a list we need to refresh the cache. */
|
|
jffs_init_1pass_list(part);
|
|
pL = (struct b_lists *)part->jffs2_priv;
|
|
pL->partOffset = part->offset;
|
|
puts ("Scanning JFFS2 FS: ");
|
|
|
|
sectorsize = nand->erasesize;
|
|
nr_blocks = part->size / sectorsize;
|
|
buf = malloc(sectorsize);
|
|
if (!buf)
|
|
return 0;
|
|
|
|
for (i = 0; i < nr_blocks; i++) {
|
|
printf("\b\b%c ", spinner[counter++ % sizeof(spinner)]);
|
|
|
|
offset = part->offset + i * sectorsize;
|
|
|
|
if (nand_block_isbad(nand, offset))
|
|
continue;
|
|
|
|
if (jffs2_fill_scan_buf(nand, buf, offset, EMPTY_SCAN_SIZE))
|
|
return 0;
|
|
|
|
ofs = 0;
|
|
/* Scan only 4KiB of 0xFF before declaring it's empty */
|
|
while (ofs < EMPTY_SCAN_SIZE && *(uint32_t *)(&buf[ofs]) == 0xFFFFFFFF)
|
|
ofs += 4;
|
|
if (ofs == EMPTY_SCAN_SIZE)
|
|
continue;
|
|
|
|
if (jffs2_fill_scan_buf(nand, buf + EMPTY_SCAN_SIZE, offset + EMPTY_SCAN_SIZE, sectorsize - EMPTY_SCAN_SIZE))
|
|
return 0;
|
|
offset += ofs;
|
|
|
|
while (ofs < sectorsize - sizeof(struct jffs2_unknown_node)) {
|
|
node = (struct jffs2_unknown_node *)&buf[ofs];
|
|
if (node->magic != JFFS2_MAGIC_BITMASK || !hdr_crc(node)) {
|
|
offset += 4;
|
|
ofs += 4;
|
|
counter4++;
|
|
continue;
|
|
}
|
|
/* if its a fragment add it */
|
|
if (node->nodetype == JFFS2_NODETYPE_INODE &&
|
|
inode_crc((struct jffs2_raw_inode *) node)) {
|
|
if (insert_inode(&pL->frag, (struct jffs2_raw_inode *) node,
|
|
offset) == NULL) {
|
|
return 0;
|
|
}
|
|
} else if (node->nodetype == JFFS2_NODETYPE_DIRENT &&
|
|
dirent_crc((struct jffs2_raw_dirent *) node) &&
|
|
dirent_name_crc((struct jffs2_raw_dirent *) node)) {
|
|
if (! (counterN%100))
|
|
puts ("\b\b. ");
|
|
if (insert_dirent(&pL->dir, (struct jffs2_raw_dirent *) node,
|
|
offset) == NULL) {
|
|
return 0;
|
|
}
|
|
counterN++;
|
|
} else if (node->nodetype == JFFS2_NODETYPE_CLEANMARKER) {
|
|
if (node->totlen != sizeof(struct jffs2_unknown_node))
|
|
printf("OOPS Cleanmarker has bad size "
|
|
"%d != %zu\n",
|
|
node->totlen,
|
|
sizeof(struct jffs2_unknown_node));
|
|
} else if (node->nodetype == JFFS2_NODETYPE_PADDING) {
|
|
if (node->totlen < sizeof(struct jffs2_unknown_node))
|
|
printf("OOPS Padding has bad size "
|
|
"%d < %zu\n",
|
|
node->totlen,
|
|
sizeof(struct jffs2_unknown_node));
|
|
} else {
|
|
printf("Unknown node type: %x len %d offset 0x%x\n",
|
|
node->nodetype,
|
|
node->totlen, offset);
|
|
}
|
|
offset += ((node->totlen + 3) & ~3);
|
|
ofs += ((node->totlen + 3) & ~3);
|
|
counterF++;
|
|
}
|
|
}
|
|
|
|
putstr("\b\b done.\r\n"); /* close off the dots */
|
|
|
|
#if 0
|
|
putLabeledWord("dir entries = ", pL->dir.listCount);
|
|
putLabeledWord("frag entries = ", pL->frag.listCount);
|
|
putLabeledWord("+4 increments = ", counter4);
|
|
putLabeledWord("+file_offset increments = ", counterF);
|
|
#endif
|
|
|
|
#ifdef DEBUG_DIRENTS
|
|
dump_dirents(pL);
|
|
#endif
|
|
|
|
#ifdef DEBUG_FRAGMENTS
|
|
dump_fragments(pL);
|
|
#endif
|
|
|
|
/* give visual feedback that we are done scanning the flash */
|
|
led_blink(0x0, 0x0, 0x1, 0x1); /* off, forever, on 100ms, off 100ms */
|
|
free(buf);
|
|
|
|
return 1;
|
|
}
|
|
|
|
|
|
static u32
|
|
jffs2_1pass_fill_info(struct b_lists * pL, struct b_jffs2_info * piL)
|
|
{
|
|
struct b_node *b;
|
|
struct jffs2_raw_inode ojNode;
|
|
struct jffs2_raw_inode *jNode;
|
|
int i;
|
|
|
|
for (i = 0; i < JFFS2_NUM_COMPR; i++) {
|
|
piL->compr_info[i].num_frags = 0;
|
|
piL->compr_info[i].compr_sum = 0;
|
|
piL->compr_info[i].decompr_sum = 0;
|
|
}
|
|
/* FIXME
|
|
b = pL->frag.listHead;
|
|
while (b) {
|
|
jNode = (struct jffs2_raw_inode *) get_fl_mem(b->offset,
|
|
sizeof(ojNode), &ojNode);
|
|
if (jNode->compr < JFFS2_NUM_COMPR) {
|
|
piL->compr_info[jNode->compr].num_frags++;
|
|
piL->compr_info[jNode->compr].compr_sum += jNode->csize;
|
|
piL->compr_info[jNode->compr].decompr_sum += jNode->dsize;
|
|
}
|
|
b = b->next;
|
|
}
|
|
*/
|
|
return 0;
|
|
}
|
|
|
|
|
|
static struct b_lists *
|
|
jffs2_get_list(struct part_info * part, const char *who)
|
|
{
|
|
if (jffs2_1pass_rescan_needed(part)) {
|
|
if (!jffs2_1pass_build_lists(part)) {
|
|
printf("%s: Failed to scan JFFSv2 file structure\n", who);
|
|
return NULL;
|
|
}
|
|
}
|
|
return (struct b_lists *)part->jffs2_priv;
|
|
}
|
|
|
|
|
|
/* Print directory / file contents */
|
|
u32
|
|
jffs2_1pass_ls(struct part_info * part, const char *fname)
|
|
{
|
|
struct b_lists *pl;
|
|
long ret = 0;
|
|
u32 inode;
|
|
|
|
if (! (pl = jffs2_get_list(part, "ls")))
|
|
return 0;
|
|
|
|
if (! (inode = jffs2_1pass_search_list_inodes(pl, fname, 1))) {
|
|
putstr("ls: Failed to scan jffs2 file structure\r\n");
|
|
return 0;
|
|
}
|
|
|
|
#if 0
|
|
putLabeledWord("found file at inode = ", inode);
|
|
putLabeledWord("read_inode returns = ", ret);
|
|
#endif
|
|
|
|
return ret;
|
|
}
|
|
|
|
|
|
/* Load a file from flash into memory. fname can be a full path */
|
|
u32
|
|
jffs2_1pass_load(char *dest, struct part_info * part, const char *fname)
|
|
{
|
|
|
|
struct b_lists *pl;
|
|
long ret = 0;
|
|
u32 inode;
|
|
|
|
if (! (pl = jffs2_get_list(part, "load")))
|
|
return 0;
|
|
|
|
if (! (inode = jffs2_1pass_search_inode(pl, fname, 1))) {
|
|
putstr("load: Failed to find inode\r\n");
|
|
return 0;
|
|
}
|
|
|
|
/* Resolve symlinks */
|
|
if (! (inode = jffs2_1pass_resolve_inode(pl, inode))) {
|
|
putstr("load: Failed to resolve inode structure\r\n");
|
|
return 0;
|
|
}
|
|
|
|
if ((ret = jffs2_1pass_read_inode(pl, inode, dest, NULL)) < 0) {
|
|
putstr("load: Failed to read inode\r\n");
|
|
return 0;
|
|
}
|
|
|
|
DEBUGF ("load: loaded '%s' to 0x%lx (%ld bytes)\n", fname,
|
|
(unsigned long) dest, ret);
|
|
return ret;
|
|
}
|
|
|
|
/* Return information about the fs on this partition */
|
|
u32
|
|
jffs2_1pass_info(struct part_info * part)
|
|
{
|
|
struct b_jffs2_info info;
|
|
struct b_lists *pl;
|
|
int i;
|
|
|
|
if (! (pl = jffs2_get_list(part, "info")))
|
|
return 0;
|
|
|
|
jffs2_1pass_fill_info(pl, &info);
|
|
for (i = 0; i < JFFS2_NUM_COMPR; i++) {
|
|
printf ("Compression: %s\n"
|
|
"\tfrag count: %d\n"
|
|
"\tcompressed sum: %d\n"
|
|
"\tuncompressed sum: %d\n",
|
|
compr_names[i],
|
|
info.compr_info[i].num_frags,
|
|
info.compr_info[i].compr_sum,
|
|
info.compr_info[i].decompr_sum);
|
|
}
|
|
return 1;
|
|
}
|