u-boot/fs/jffs2/jffs2_nand_1pass.c
Wolfgang Denk f098337152 JFFS2: drop support for LZARI compression mode
Support for LZARI compression mode was added based on a MTD CVS
snapshot of March 13, 2005. However, fs/jffs2/compr_lzari.c contains
contradictory licensing terms: the original copyright clause says "All
rights reserved. Permission granted for non-commercial use.", but
later reference to the file 'LICENCE' in the jffs2 directory was added
which says GPL v2 or later.

As no boards ever used LZARI compression, and this file is also not
present in recent MTD code, we resolve this conflict by removing the
conflicting file and references to it.

Also copy the referenced but missing file 'LICENCE' from the current
MTD source tree.

Signed-off-by: Wolfgang Denk <wd@denx.de>
2010-01-15 11:16:47 +01:00

1030 lines
25 KiB
C

#include <common.h>
#include <malloc.h>
#include <linux/stat.h>
#include <linux/time.h>
#include <jffs2/jffs2.h>
#include <jffs2/jffs2_1pass.h>
#include <nand.h>
#include "jffs2_nand_private.h"
#define NODE_CHUNK 1024 /* size of memory allocation chunk in b_nodes */
/* Debugging switches */
#undef DEBUG_DIRENTS /* print directory entry list after scan */
#undef DEBUG_FRAGMENTS /* print fragment list after scan */
#undef DEBUG /* enable debugging messages */
#ifdef DEBUG
# define DEBUGF(fmt,args...) printf(fmt ,##args)
#else
# define DEBUGF(fmt,args...)
#endif
static nand_info_t *nand;
/* Compression names */
static char *compr_names[] = {
"NONE",
"ZERO",
"RTIME",
"RUBINMIPS",
"COPY",
"DYNRUBIN",
"ZLIB",
#if defined(CONFIG_JFFS2_LZO)
"LZO",
#endif
};
/* Spinning wheel */
static char spinner[] = { '|', '/', '-', '\\' };
/* Memory management */
struct mem_block {
unsigned index;
struct mem_block *next;
char nodes[0];
};
static void
free_nodes(struct b_list *list)
{
while (list->listMemBase != NULL) {
struct mem_block *next = list->listMemBase->next;
free(list->listMemBase);
list->listMemBase = next;
}
}
static struct b_node *
add_node(struct b_list *list, int size)
{
u32 index = 0;
struct mem_block *memBase;
struct b_node *b;
memBase = list->listMemBase;
if (memBase != NULL)
index = memBase->index;
if (memBase == NULL || index >= NODE_CHUNK) {
/* we need more space before we continue */
memBase = mmalloc(sizeof(struct mem_block) + NODE_CHUNK * size);
if (memBase == NULL) {
putstr("add_node: malloc failed\n");
return NULL;
}
memBase->next = list->listMemBase;
index = 0;
}
/* now we have room to add it. */
b = (struct b_node *)&memBase->nodes[size * index];
index ++;
memBase->index = index;
list->listMemBase = memBase;
list->listCount++;
return b;
}
static struct b_node *
insert_node(struct b_list *list, struct b_node *new)
{
#ifdef CONFIG_SYS_JFFS2_SORT_FRAGMENTS
struct b_node *b, *prev;
if (list->listTail != NULL && list->listCompare(new, list->listTail))
prev = list->listTail;
else if (list->listLast != NULL && list->listCompare(new, list->listLast))
prev = list->listLast;
else
prev = NULL;
for (b = (prev ? prev->next : list->listHead);
b != NULL && list->listCompare(new, b);
prev = b, b = b->next) {
list->listLoops++;
}
if (b != NULL)
list->listLast = prev;
if (b != NULL) {
new->next = b;
if (prev != NULL)
prev->next = new;
else
list->listHead = new;
} else
#endif
{
new->next = (struct b_node *) NULL;
if (list->listTail != NULL) {
list->listTail->next = new;
list->listTail = new;
} else {
list->listTail = list->listHead = new;
}
}
return new;
}
static struct b_node *
insert_inode(struct b_list *list, struct jffs2_raw_inode *node, u32 offset)
{
struct b_inode *new;
if (!(new = (struct b_inode *)add_node(list, sizeof(struct b_inode)))) {
putstr("add_node failed!\r\n");
return NULL;
}
new->offset = offset;
new->version = node->version;
new->ino = node->ino;
new->isize = node->isize;
new->csize = node->csize;
return insert_node(list, (struct b_node *)new);
}
static struct b_node *
insert_dirent(struct b_list *list, struct jffs2_raw_dirent *node, u32 offset)
{
struct b_dirent *new;
if (!(new = (struct b_dirent *)add_node(list, sizeof(struct b_dirent)))) {
putstr("add_node failed!\r\n");
return NULL;
}
new->offset = offset;
new->version = node->version;
new->pino = node->pino;
new->ino = node->ino;
new->nhash = full_name_hash(node->name, node->nsize);
new->nsize = node->nsize;
new->type = node->type;
return insert_node(list, (struct b_node *)new);
}
#ifdef CONFIG_SYS_JFFS2_SORT_FRAGMENTS
/* Sort data entries with the latest version last, so that if there
* is overlapping data the latest version will be used.
*/
static int compare_inodes(struct b_node *new, struct b_node *old)
{
struct jffs2_raw_inode ojNew;
struct jffs2_raw_inode ojOld;
struct jffs2_raw_inode *jNew =
(struct jffs2_raw_inode *)get_fl_mem(new->offset, sizeof(ojNew), &ojNew);
struct jffs2_raw_inode *jOld =
(struct jffs2_raw_inode *)get_fl_mem(old->offset, sizeof(ojOld), &ojOld);
return jNew->version > jOld->version;
}
/* Sort directory entries so all entries in the same directory
* with the same name are grouped together, with the latest version
* last. This makes it easy to eliminate all but the latest version
* by marking the previous version dead by setting the inode to 0.
*/
static int compare_dirents(struct b_node *new, struct b_node *old)
{
struct jffs2_raw_dirent ojNew;
struct jffs2_raw_dirent ojOld;
struct jffs2_raw_dirent *jNew =
(struct jffs2_raw_dirent *)get_fl_mem(new->offset, sizeof(ojNew), &ojNew);
struct jffs2_raw_dirent *jOld =
(struct jffs2_raw_dirent *)get_fl_mem(old->offset, sizeof(ojOld), &ojOld);
int cmp;
/* ascending sort by pino */
if (jNew->pino != jOld->pino)
return jNew->pino > jOld->pino;
/* pino is the same, so use ascending sort by nsize, so
* we don't do strncmp unless we really must.
*/
if (jNew->nsize != jOld->nsize)
return jNew->nsize > jOld->nsize;
/* length is also the same, so use ascending sort by name
*/
cmp = strncmp(jNew->name, jOld->name, jNew->nsize);
if (cmp != 0)
return cmp > 0;
/* we have duplicate names in this directory, so use ascending
* sort by version
*/
if (jNew->version > jOld->version) {
/* since jNew is newer, we know jOld is not valid, so
* mark it with inode 0 and it will not be used
*/
jOld->ino = 0;
return 1;
}
return 0;
}
#endif
static u32
jffs_init_1pass_list(struct part_info *part)
{
struct b_lists *pL;
if (part->jffs2_priv != NULL) {
pL = (struct b_lists *)part->jffs2_priv;
free_nodes(&pL->frag);
free_nodes(&pL->dir);
free(pL);
}
if (NULL != (part->jffs2_priv = malloc(sizeof(struct b_lists)))) {
pL = (struct b_lists *)part->jffs2_priv;
memset(pL, 0, sizeof(*pL));
#ifdef CONFIG_SYS_JFFS2_SORT_FRAGMENTS
pL->dir.listCompare = compare_dirents;
pL->frag.listCompare = compare_inodes;
#endif
}
return 0;
}
/* find the inode from the slashless name given a parent */
static long
jffs2_1pass_read_inode(struct b_lists *pL, u32 ino, char *dest,
struct stat *stat)
{
struct b_inode *jNode;
u32 totalSize = 0;
u32 latestVersion = 0;
long ret;
#ifdef CONFIG_SYS_JFFS2_SORT_FRAGMENTS
/* Find file size before loading any data, so fragments that
* start past the end of file can be ignored. A fragment
* that is partially in the file is loaded, so extra data may
* be loaded up to the next 4K boundary above the file size.
* This shouldn't cause trouble when loading kernel images, so
* we will live with it.
*/
for (jNode = (struct b_inode *)pL->frag.listHead; jNode; jNode = jNode->next) {
if ((ino == jNode->ino)) {
/* get actual file length from the newest node */
if (jNode->version >= latestVersion) {
totalSize = jNode->isize;
latestVersion = jNode->version;
}
}
}
#endif
for (jNode = (struct b_inode *)pL->frag.listHead; jNode; jNode = jNode->next) {
if ((ino != jNode->ino))
continue;
#ifndef CONFIG_SYS_JFFS2_SORT_FRAGMENTS
/* get actual file length from the newest node */
if (jNode->version >= latestVersion) {
totalSize = jNode->isize;
latestVersion = jNode->version;
}
#endif
if (dest || stat) {
char *src, *dst;
char data[4096 + sizeof(struct jffs2_raw_inode)];
struct jffs2_raw_inode *inode;
size_t len;
inode = (struct jffs2_raw_inode *)&data;
len = sizeof(struct jffs2_raw_inode);
if (dest)
len += jNode->csize;
nand_read(nand, jNode->offset, &len, inode);
/* ignore data behind latest known EOF */
if (inode->offset > totalSize)
continue;
if (stat) {
stat->st_mtime = inode->mtime;
stat->st_mode = inode->mode;
stat->st_ino = inode->ino;
stat->st_size = totalSize;
}
if (!dest)
continue;
src = ((char *) inode) + sizeof(struct jffs2_raw_inode);
dst = (char *) (dest + inode->offset);
switch (inode->compr) {
case JFFS2_COMPR_NONE:
ret = 0;
memcpy(dst, src, inode->dsize);
break;
case JFFS2_COMPR_ZERO:
ret = 0;
memset(dst, 0, inode->dsize);
break;
case JFFS2_COMPR_RTIME:
ret = 0;
rtime_decompress(src, dst, inode->csize, inode->dsize);
break;
case JFFS2_COMPR_DYNRUBIN:
/* this is slow but it works */
ret = 0;
dynrubin_decompress(src, dst, inode->csize, inode->dsize);
break;
case JFFS2_COMPR_ZLIB:
ret = zlib_decompress(src, dst, inode->csize, inode->dsize);
break;
#if defined(CONFIG_JFFS2_LZO)
case JFFS2_COMPR_LZO:
ret = lzo_decompress(src, dst, inode->csize, inode->dsize);
break;
#endif
default:
/* unknown */
putLabeledWord("UNKOWN COMPRESSION METHOD = ", inode->compr);
return -1;
}
}
}
return totalSize;
}
/* find the inode from the slashless name given a parent */
static u32
jffs2_1pass_find_inode(struct b_lists * pL, const char *name, u32 pino)
{
struct b_dirent *jDir;
int len = strlen(name); /* name is assumed slash free */
unsigned int nhash = full_name_hash(name, len);
u32 version = 0;
u32 inode = 0;
/* 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 ((pino == jDir->pino) && (jDir->ino) && /* 0 for unlink */
(len == jDir->nsize) && (nhash == jDir->nhash)) {
/* TODO: compare name */
if (jDir->version < version)
continue;
if (jDir->version == version && inode != 0) {
/* I'm pretty sure this isn't legal */
putstr(" ** ERROR ** ");
/* putnstr(jDir->name, jDir->nsize); */
/* putLabeledWord(" has dup version =", version); */
}
inode = jDir->ino;
version = jDir->version;
}
}
return inode;
}
char *mkmodestr(unsigned long mode, char *str)
{
static const char *l = "xwr";
int mask = 1, i;
char c;
switch (mode & S_IFMT) {
case S_IFDIR: str[0] = 'd'; break;
case S_IFBLK: str[0] = 'b'; break;
case S_IFCHR: str[0] = 'c'; break;
case S_IFIFO: str[0] = 'f'; break;
case S_IFLNK: str[0] = 'l'; break;
case S_IFSOCK: str[0] = 's'; break;
case S_IFREG: str[0] = '-'; break;
default: str[0] = '?';
}
for(i = 0; i < 9; i++) {
c = l[i%3];
str[9-i] = (mode & mask)?c:'-';
mask = mask<<1;
}
if(mode & S_ISUID) str[3] = (mode & S_IXUSR)?'s':'S';
if(mode & S_ISGID) str[6] = (mode & S_IXGRP)?'s':'S';
if(mode & S_ISVTX) str[9] = (mode & S_IXOTH)?'t':'T';
str[10] = '\0';
return str;
}
static inline void dump_stat(struct stat *st, const char *name)
{
char str[20];
char s[64], *p;
if (st->st_mtime == (time_t)(-1)) /* some ctimes really hate -1 */
st->st_mtime = 1;
ctime_r(&st->st_mtime, s/*,64*/); /* newlib ctime doesn't have buflen */
if ((p = strchr(s,'\n')) != NULL) *p = '\0';
if ((p = strchr(s,'\r')) != NULL) *p = '\0';
/*
printf("%6lo %s %8ld %s %s\n", st->st_mode, mkmodestr(st->st_mode, str),
st->st_size, s, name);
*/
printf(" %s %8ld %s %s", mkmodestr(st->st_mode,str), st->st_size, s, name);
}
static inline int
dump_inode(struct b_lists *pL, struct b_dirent *d, struct b_inode *i)
{
char fname[JFFS2_MAX_NAME_LEN + 1];
struct stat st;
size_t len;
if(!d || !i) return -1;
len = d->nsize;
nand_read(nand, d->offset + sizeof(struct jffs2_raw_dirent),
&len, &fname);
fname[d->nsize] = '\0';
memset(&st, 0, sizeof(st));
jffs2_1pass_read_inode(pL, i->ino, NULL, &st);
dump_stat(&st, fname);
/* FIXME
if (d->type == DT_LNK) {
unsigned char *src = (unsigned char *) (&i[1]);
putstr(" -> ");
putnstr(src, (int)i->dsize);
}
*/
putstr("\r\n");
return 0;
}
/* list inodes with the given pino */
static u32
jffs2_1pass_list_inodes(struct b_lists * pL, u32 pino)
{
struct b_dirent *jDir;
u32 i_version = 0;
for (jDir = (struct b_dirent *)pL->dir.listHead; jDir; jDir = jDir->next) {
if ((pino == jDir->pino) && (jDir->ino)) { /* ino=0 -> unlink */
struct b_inode *jNode = (struct b_inode *)pL->frag.listHead;
struct b_inode *i = NULL;
while (jNode) {
if (jNode->ino == jDir->ino && jNode->version >= i_version) {
i_version = jNode->version;
i = jNode;
}
jNode = jNode->next;
}
dump_inode(pL, jDir, i);
}
}
return pino;
}
static u32
jffs2_1pass_search_inode(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]);
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;
}