mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-16 23:18:51 +09:00
![wdenk](/assets/img/avatar_default.png)
add FAT support for IDE, SCSI and USB * Patches by Gleb Natapov, 2 Sep 2003: - cleanup of POST code for unsupported architectures - MPC824x locks way0 of data cache for use as initial RAM; this patch unlocks it after relocation to RAM and invalidates the locked entries. * Patch by Gleb Natapov, 30 Aug 2003: new I2C driver for mpc107 bridge. Now works from flash. * Patch by Dave Ellis, 11 Aug 2003: - JFFS2: fix typo in common/cmd_jffs2.c - JFFS2: fix CFG_JFFS2_SORT_FRAGMENTS option - JFFS2: remove node version 0 warning - JFFS2: accept JFFS2 PADDING nodes - SXNI855T: add AM29LV800 support - SXNI855T: move environment from EEPROM to flash - SXNI855T: boot from JFFS2 in NOR or NAND flash * Patch by Bill Hargen, 11 Aug 2003: fixes for I2C on MPC8240 - fix i2c_write routine - fix iprobe command - eliminates use of global variables, plus dead code, cleanup.
1113 lines
30 KiB
C
1113 lines
30 KiB
C
/*
|
|
-------------------------------------------------------------------------
|
|
* Filename: jffs2.c
|
|
* Version: $Id: jffs2_1pass.c,v 1.7 2002/01/25 01:56:47 nyet Exp $
|
|
* Copyright: Copyright (C) 2001, Russ Dill
|
|
* Author: Russ Dill <Russ.Dill@asu.edu>
|
|
* Description: Module to load kernel from jffs2
|
|
*-----------------------------------------------------------------------*/
|
|
/*
|
|
* some portions of this code are taken from jffs2, and as such, the
|
|
* following copyright notice is included.
|
|
*
|
|
* JFFS2 -- Journalling Flash File System, Version 2.
|
|
*
|
|
* Copyright (C) 2001 Red Hat, Inc.
|
|
*
|
|
* Created by David Woodhouse <dwmw2@cambridge.redhat.com>
|
|
*
|
|
* The original JFFS, from which the design for JFFS2 was derived,
|
|
* was designed and implemented by Axis Communications AB.
|
|
*
|
|
* The contents of this file are subject to the Red Hat eCos Public
|
|
* License Version 1.1 (the "Licence"); you may not use this file
|
|
* except in compliance with the Licence. You may obtain a copy of
|
|
* the Licence at http://www.redhat.com/
|
|
*
|
|
* Software distributed under the Licence is distributed on an "AS IS"
|
|
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.
|
|
* See the Licence for the specific language governing rights and
|
|
* limitations under the Licence.
|
|
*
|
|
* The Original Code is JFFS2 - Journalling Flash File System, version 2
|
|
*
|
|
* Alternatively, the contents of this file may be used under the
|
|
* terms of the GNU General Public License version 2 (the "GPL"), in
|
|
* which case the provisions of the GPL are applicable instead of the
|
|
* above. If you wish to allow the use of your version of this file
|
|
* only under the terms of the GPL and not to allow others to use your
|
|
* version of this file under the RHEPL, indicate your decision by
|
|
* deleting the provisions above and replace them with the notice and
|
|
* other provisions required by the GPL. If you do not delete the
|
|
* provisions above, a recipient may use your version of this file
|
|
* under either the RHEPL or the GPL.
|
|
*
|
|
* $Id: jffs2_1pass.c,v 1.7 2002/01/25 01:56:47 nyet Exp $
|
|
*
|
|
*/
|
|
|
|
/* Ok, so anyone who knows the jffs2 code will probably want to get a papar
|
|
* bag to throw up into before reading this code. I looked through the jffs2
|
|
* code, the caching scheme is very elegant. I tried to keep the version
|
|
* for a bootloader as small and simple as possible. Instead of worring about
|
|
* unneccesary data copies, node scans, etc, I just optimized for the known
|
|
* common case, a kernel, which looks like:
|
|
* (1) most pages are 4096 bytes
|
|
* (2) version numbers are somewhat sorted in acsending order
|
|
* (3) multiple compressed blocks making up one page is uncommon
|
|
*
|
|
* So I create a linked list of decending version numbers (insertions at the
|
|
* head), and then for each page, walk down the list, until a matching page
|
|
* with 4096 bytes is found, and then decompress the watching pages in
|
|
* reverse order.
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* Adapted by Nye Liu <nyet@zumanetworks.com> and
|
|
* Rex Feany <rfeany@zumanetworks.com>
|
|
* on Jan/2002 for U-Boot.
|
|
*
|
|
* Clipped out all the non-1pass functions, cleaned up warnings,
|
|
* wrappers, etc. No major changes to the code.
|
|
* Please, he really means it when he said have a paper bag
|
|
* handy. We needed it ;).
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* Bugfixing by Kai-Uwe Bloem <kai-uwe.bloem@auerswald.de>, (C) Mar/2003
|
|
*
|
|
* - overhaul of the memory management. Removed much of the "paper-bagging"
|
|
* in that part of the code, fixed several bugs, now frees memory when
|
|
* partition is changed.
|
|
* It's still ugly :-(
|
|
* - fixed a bug in jffs2_1pass_read_inode where the file length calculation
|
|
* was incorrect. Removed a bit of the paper-bagging as well.
|
|
* - removed double crc calculation for fragment headers in jffs2_private.h
|
|
* for speedup.
|
|
* - scan_empty rewritten in a more "standard" manner (non-paperbag, that is).
|
|
* - spinning wheel now spins depending on how much memory has been scanned
|
|
* - lots of small changes all over the place to "improve" readability.
|
|
* - implemented fragment sorting to ensure that the newest data is copied
|
|
* if there are multiple copies of fragments for a certain file offset.
|
|
*
|
|
* The fragment sorting feature must be enabled by CFG_JFFS2_SORT_FRAGMENTS.
|
|
* Sorting is done while adding fragments to the lists, which is more or less a
|
|
* bubble sort. This takes a lot of time, and is most probably not an issue if
|
|
* the boot filesystem is always mounted readonly.
|
|
*
|
|
* You should define it if the boot filesystem is mounted writable, and updates
|
|
* to the boot files are done by copying files to that filesystem.
|
|
*
|
|
*
|
|
* There's a big issue left: endianess is completely ignored in this code. Duh!
|
|
*
|
|
*
|
|
* You still should have paper bags at hand :-(. The code lacks more or less
|
|
* any comment, and is still arcane and difficult to read in places. As this
|
|
* is incompatible with any new code from the jffs2 maintainers anyway, it
|
|
* should probably be dumped and replaced by something like jffs2reader!
|
|
*/
|
|
|
|
|
|
#include <common.h>
|
|
#include <config.h>
|
|
#include <malloc.h>
|
|
#include <linux/stat.h>
|
|
#include <linux/time.h>
|
|
|
|
#if (CONFIG_COMMANDS & CFG_CMD_JFFS2)
|
|
|
|
#include <jffs2/jffs2.h>
|
|
#include <jffs2/jffs2_1pass.h>
|
|
|
|
#include "jffs2_private.h"
|
|
|
|
|
|
#define NODE_CHUNK 1024 /* size of memory allocation chunk in b_nodes */
|
|
#define SPIN_BLKSIZE 18 /* spin after having scanned 1<<BLKSIZE bytes */
|
|
|
|
/* 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
|
|
|
|
|
|
/* Compression names */
|
|
static char *compr_names[] = {
|
|
"NONE",
|
|
"ZERO",
|
|
"RTIME",
|
|
"RUBINMIPS",
|
|
"COPY",
|
|
"DYNRUBIN",
|
|
"ZLIB"
|
|
};
|
|
|
|
/* Spinning wheel */
|
|
static char spinner[] = { '|', '/', '-', '\\' };
|
|
|
|
/* Memory management */
|
|
struct mem_block {
|
|
u32 index;
|
|
struct mem_block *next;
|
|
struct b_node nodes[NODE_CHUNK];
|
|
};
|
|
|
|
|
|
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)
|
|
{
|
|
u32 index = 0;
|
|
struct mem_block *memBase;
|
|
struct b_node *b;
|
|
|
|
memBase = list->listMemBase;
|
|
if (memBase != NULL)
|
|
index = memBase->index;
|
|
#if 0
|
|
putLabeledWord("add_node: index = ", index);
|
|
putLabeledWord("add_node: memBase = ", list->listMemBase);
|
|
#endif
|
|
|
|
if (memBase == NULL || index >= NODE_CHUNK) {
|
|
/* we need more space before we continue */
|
|
memBase = mmalloc(sizeof(struct mem_block));
|
|
if (memBase == NULL) {
|
|
putstr("add_node: malloc failed\n");
|
|
return NULL;
|
|
}
|
|
memBase->next = list->listMemBase;
|
|
index = 0;
|
|
#if 0
|
|
putLabeledWord("add_node: alloced a new membase at ", *memBase);
|
|
#endif
|
|
|
|
}
|
|
/* now we have room to add it. */
|
|
b = &memBase->nodes[index];
|
|
index ++;
|
|
|
|
memBase->index = index;
|
|
list->listMemBase = memBase;
|
|
list->listCount++;
|
|
return b;
|
|
}
|
|
|
|
static struct b_node *
|
|
insert_node(struct b_list *list, u32 offset)
|
|
{
|
|
struct b_node *new;
|
|
#ifdef CFG_JFFS2_SORT_FRAGMENTS
|
|
struct b_node *b, *prev;
|
|
#endif
|
|
|
|
if (!(new = add_node(list))) {
|
|
putstr("add_node failed!\r\n");
|
|
return NULL;
|
|
}
|
|
new->offset = offset;
|
|
|
|
#ifdef CFG_JFFS2_SORT_FRAGMENTS
|
|
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;
|
|
}
|
|
|
|
#ifdef CFG_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 *jNew = (struct jffs2_raw_inode *)new->offset;
|
|
struct jffs2_raw_inode *jOld = (struct jffs2_raw_inode *)old->offset;
|
|
|
|
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 *jNew = (struct jffs2_raw_dirent *)new->offset;
|
|
struct jffs2_raw_dirent *jOld = (struct jffs2_raw_dirent *)old->offset;
|
|
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
|
|
jffs2_scan_empty(u32 start_offset, struct part_info *part)
|
|
{
|
|
char *max = part->offset + part->size - sizeof(struct jffs2_raw_inode);
|
|
char *offset = part->offset + start_offset;
|
|
|
|
while (offset < max && *(u32 *)offset == 0xFFFFFFFF) {
|
|
offset += sizeof(u32);
|
|
/* return if spinning is due */
|
|
if (((u32)offset & ((1 << SPIN_BLKSIZE)-1)) == 0) break;
|
|
}
|
|
|
|
return offset - part->offset;
|
|
}
|
|
|
|
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 CFG_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 inode, char *dest)
|
|
{
|
|
struct b_node *b;
|
|
struct jffs2_raw_inode *jNode;
|
|
u32 totalSize = 0;
|
|
u32 latestVersion = 0;
|
|
char *lDest;
|
|
char *src;
|
|
long ret;
|
|
int i;
|
|
u32 counter = 0;
|
|
#ifdef CFG_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 (b = pL->frag.listHead; b != NULL; b = b->next) {
|
|
jNode = (struct jffs2_raw_inode *) (b->offset);
|
|
if ((inode == jNode->ino)) {
|
|
/* get actual file length from the newest node */
|
|
if (jNode->version >= latestVersion) {
|
|
totalSize = jNode->isize;
|
|
latestVersion = jNode->version;
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
for (b = pL->frag.listHead; b != NULL; b = b->next) {
|
|
jNode = (struct jffs2_raw_inode *) (b->offset);
|
|
if ((inode == jNode->ino)) {
|
|
#if 0
|
|
putLabeledWord("\r\n\r\nread_inode: totlen = ", jNode->totlen);
|
|
putLabeledWord("read_inode: inode = ", jNode->ino);
|
|
putLabeledWord("read_inode: version = ", jNode->version);
|
|
putLabeledWord("read_inode: isize = ", jNode->isize);
|
|
putLabeledWord("read_inode: offset = ", jNode->offset);
|
|
putLabeledWord("read_inode: csize = ", jNode->csize);
|
|
putLabeledWord("read_inode: dsize = ", jNode->dsize);
|
|
putLabeledWord("read_inode: compr = ", jNode->compr);
|
|
putLabeledWord("read_inode: usercompr = ", jNode->usercompr);
|
|
putLabeledWord("read_inode: flags = ", jNode->flags);
|
|
#endif
|
|
|
|
#ifndef CFG_JFFS2_SORT_FRAGMENTS
|
|
/* get actual file length from the newest node */
|
|
if (jNode->version >= latestVersion) {
|
|
totalSize = jNode->isize;
|
|
latestVersion = jNode->version;
|
|
}
|
|
#endif
|
|
|
|
if(dest) {
|
|
src = ((char *) jNode) + sizeof(struct jffs2_raw_inode);
|
|
/* ignore data behind latest known EOF */
|
|
if (jNode->offset > totalSize)
|
|
continue;
|
|
|
|
lDest = (char *) (dest + jNode->offset);
|
|
#if 0
|
|
putLabeledWord("read_inode: src = ", src);
|
|
putLabeledWord("read_inode: dest = ", lDest);
|
|
#endif
|
|
switch (jNode->compr) {
|
|
case JFFS2_COMPR_NONE:
|
|
ret = (unsigned long) ldr_memcpy(lDest, src, jNode->dsize);
|
|
break;
|
|
case JFFS2_COMPR_ZERO:
|
|
ret = 0;
|
|
for (i = 0; i < jNode->dsize; i++)
|
|
*(lDest++) = 0;
|
|
break;
|
|
case JFFS2_COMPR_RTIME:
|
|
ret = 0;
|
|
rtime_decompress(src, lDest, jNode->csize, jNode->dsize);
|
|
break;
|
|
case JFFS2_COMPR_DYNRUBIN:
|
|
/* this is slow but it works */
|
|
ret = 0;
|
|
dynrubin_decompress(src, lDest, jNode->csize, jNode->dsize);
|
|
break;
|
|
case JFFS2_COMPR_ZLIB:
|
|
ret = zlib_decompress(src, lDest, jNode->csize, jNode->dsize);
|
|
break;
|
|
default:
|
|
/* unknown */
|
|
putLabeledWord("UNKOWN COMPRESSION METHOD = ", jNode->compr);
|
|
return -1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
#if 0
|
|
putLabeledWord("read_inode: totalSize = ", totalSize);
|
|
putLabeledWord("read_inode: compr ret = ", ret);
|
|
#endif
|
|
}
|
|
counter++;
|
|
}
|
|
|
|
#if 0
|
|
putLabeledWord("read_inode: returning = ", totalSize);
|
|
#endif
|
|
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_node *b;
|
|
struct jffs2_raw_dirent *jDir;
|
|
int len;
|
|
u32 counter;
|
|
u32 version = 0;
|
|
u32 inode = 0;
|
|
|
|
/* name is assumed slash free */
|
|
len = strlen(name);
|
|
|
|
counter = 0;
|
|
/* we need to search all and return the inode with the highest version */
|
|
for(b = pL->dir.listHead; b; b = b->next, counter++) {
|
|
jDir = (struct jffs2_raw_dirent *) (b->offset);
|
|
if ((pino == jDir->pino) && (len == jDir->nsize) &&
|
|
(jDir->ino) && /* 0 for unlink */
|
|
(!strncmp(jDir->name, name, len))) { /* a match */
|
|
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;
|
|
}
|
|
#if 0
|
|
putstr("\r\nfind_inode:p&l ->");
|
|
putnstr(jDir->name, jDir->nsize);
|
|
putstr("\r\n");
|
|
putLabeledWord("pino = ", jDir->pino);
|
|
putLabeledWord("nsize = ", jDir->nsize);
|
|
putLabeledWord("b = ", (u32) b);
|
|
putLabeledWord("counter = ", counter);
|
|
#endif
|
|
}
|
|
return inode;
|
|
}
|
|
|
|
static 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 u32 dump_inode(struct b_lists * pL, struct jffs2_raw_dirent *d, struct jffs2_raw_inode *i)
|
|
{
|
|
char fname[256];
|
|
struct stat st;
|
|
|
|
if(!d || !i) return -1;
|
|
|
|
strncpy(fname, d->name, d->nsize);
|
|
fname[d->nsize] = '\0';
|
|
|
|
memset(&st,0,sizeof(st));
|
|
|
|
st.st_mtime = i->mtime;
|
|
st.st_mode = i->mode;
|
|
st.st_ino = i->ino;
|
|
|
|
/* neither dsize nor isize help us.. do it the long way */
|
|
st.st_size = jffs2_1pass_read_inode(pL, i->ino, NULL);
|
|
|
|
dump_stat(&st, fname);
|
|
|
|
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_node *b;
|
|
struct jffs2_raw_dirent *jDir;
|
|
|
|
for (b = pL->dir.listHead; b; b = b->next) {
|
|
jDir = (struct jffs2_raw_dirent *) (b->offset);
|
|
if ((pino == jDir->pino) && (jDir->ino)) { /* ino=0 -> unlink */
|
|
u32 i_version = 0;
|
|
struct jffs2_raw_inode *jNode, *i = NULL;
|
|
struct b_node *b2 = pL->frag.listHead;
|
|
|
|
while (b2) {
|
|
jNode = (struct jffs2_raw_inode *) (b2->offset);
|
|
if (jNode->ino == jDir->ino
|
|
&& jNode->version >= i_version)
|
|
i = jNode;
|
|
b2 = b2->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_node *b;
|
|
struct b_node *b2;
|
|
struct jffs2_raw_dirent *jDir;
|
|
struct jffs2_raw_inode *jNode;
|
|
struct jffs2_raw_dirent *jDirFound = NULL;
|
|
char tmp[256];
|
|
u32 version = 0;
|
|
u32 pino;
|
|
unsigned char *src;
|
|
|
|
/* we need to search all and return the inode with the highest version */
|
|
for(b = pL->dir.listHead; b; b = b->next) {
|
|
jDir = (struct jffs2_raw_dirent *) (b->offset);
|
|
if (ino == jDir->ino) {
|
|
if (jDir->version < version)
|
|
continue;
|
|
|
|
if (jDir->version == version && jDirFound) {
|
|
/* I'm pretty sure this isn't legal */
|
|
putstr(" ** ERROR ** ");
|
|
putnstr(jDir->name, jDir->nsize);
|
|
putLabeledWord(" has dup version (resolve) = ",
|
|
version);
|
|
}
|
|
|
|
jDirFound = jDir;
|
|
version = jDir->version;
|
|
}
|
|
}
|
|
/* now we found the right entry again. (shoulda returned inode*) */
|
|
if (jDirFound->type != DT_LNK)
|
|
return jDirFound->ino;
|
|
|
|
/* it's a soft link so we follow it again. */
|
|
b2 = pL->frag.listHead;
|
|
while (b2) {
|
|
jNode = (struct jffs2_raw_inode *) (b2->offset);
|
|
if (jNode->ino == jDirFound->ino) {
|
|
src = (unsigned char *) (b2->offset + sizeof(struct jffs2_raw_inode));
|
|
|
|
#if 0
|
|
putLabeledWord("\t\t dsize = ", jNode->dsize);
|
|
putstr("\t\t target = ");
|
|
putnstr(src, jNode->dsize);
|
|
putstr("\r\n");
|
|
#endif
|
|
strncpy(tmp, src, jNode->dsize);
|
|
tmp[jNode->dsize] = '\0';
|
|
break;
|
|
}
|
|
b2 = b2->next;
|
|
}
|
|
/* 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 = jDirFound->pino;
|
|
|
|
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 *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;
|
|
}
|
|
/* but suppose someone reflashed a partition at the same offset... */
|
|
b = pL->dir.listHead;
|
|
while (b) {
|
|
node = (struct jffs2_unknown_node *) (b->offset);
|
|
if (node->nodetype != JFFS2_NODETYPE_DIRENT) {
|
|
DEBUGF ("rescan: fs changed beneath me? (%lx)\n",
|
|
(unsigned long) b->offset);
|
|
return 1;
|
|
}
|
|
b = b->next;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
#ifdef DEBUG_FRAGMENTS
|
|
static void
|
|
dump_fragments(struct b_lists *pL)
|
|
{
|
|
struct b_node *b;
|
|
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 *) (b->offset);
|
|
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 *) (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;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
static u32
|
|
jffs2_1pass_build_lists(struct part_info * part)
|
|
{
|
|
struct b_lists *pL;
|
|
struct jffs2_unknown_node *node;
|
|
u32 offset, oldoffset = 0;
|
|
u32 max = part->size - sizeof(struct jffs2_raw_inode);
|
|
u32 counter = 0;
|
|
u32 counter4 = 0;
|
|
u32 counterF = 0;
|
|
u32 counterN = 0;
|
|
|
|
/* turn off the lcd. Refreshing the lcd adds 50% overhead to the */
|
|
/* jffs2 list building enterprise nope. in newer versions the overhead is */
|
|
/* only about 5 %. not enough to inconvenience people for. */
|
|
/* lcd_off(); */
|
|
|
|
/* 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;
|
|
offset = 0;
|
|
printf("Scanning JFFS2 FS: ");
|
|
|
|
/* start at the beginning of the partition */
|
|
while (offset < max) {
|
|
if ((oldoffset >> SPIN_BLKSIZE) != (offset >> SPIN_BLKSIZE)) {
|
|
printf("\b\b%c ", spinner[counter++ % sizeof(spinner)]);
|
|
oldoffset = offset;
|
|
}
|
|
|
|
node = (struct jffs2_unknown_node *) (part->offset + offset);
|
|
if (node->magic == JFFS2_MAGIC_BITMASK && hdr_crc(node)) {
|
|
/* if its a fragment add it */
|
|
if (node->nodetype == JFFS2_NODETYPE_INODE &&
|
|
inode_crc((struct jffs2_raw_inode *) node)) {
|
|
if (insert_node(&pL->frag, (u32) part->offset +
|
|
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))
|
|
printf("\b\b. ");
|
|
if (insert_node(&pL->dir, (u32) part->offset +
|
|
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 != %d\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 < %d\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);
|
|
counterF++;
|
|
} else if (node->magic == JFFS2_EMPTY_BITMASK &&
|
|
node->nodetype == JFFS2_EMPTY_BITMASK) {
|
|
offset = jffs2_scan_empty(offset, part);
|
|
} else { /* if we know nothing, we just step and look. */
|
|
offset += 4;
|
|
counter4++;
|
|
}
|
|
/* printf("unknown node magic %4.4x %4.4x @ %lx\n", node->magic, node->nodetype, (unsigned long)node); */
|
|
|
|
}
|
|
|
|
putstr("\b\b done.\r\n"); /* close off the dots */
|
|
/* turn the lcd back on. */
|
|
/* splash(); */
|
|
|
|
#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 */
|
|
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 *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;
|
|
}
|
|
|
|
b = pL->frag.listHead;
|
|
while (b) {
|
|
jNode = (struct jffs2_raw_inode *) (b->offset);
|
|
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)) < 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", compr_names[i]);
|
|
printf("\tfrag count: %d\n", info.compr_info[i].num_frags);
|
|
printf("\tcompressed sum: %d\n", info.compr_info[i].compr_sum);
|
|
printf("\tuncompressed sum: %d\n", info.compr_info[i].decompr_sum);
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
#endif /* CFG_CMD_JFFS2 */
|