/*
* JFFS2 - - Journalling Flash File System , Version 2 .
*
* Copyright © 2001 - 2007 Red Hat , Inc .
* Copyright © 2004 - 2010 David Woodhouse < dwmw2 @ infradead . org >
*
* Created by David Woodhouse < dwmw2 @ infradead . org >
*
* For licensing information , see the file ' LICENCE ' in this directory .
*
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/pagemap.h>
#include <linux/crc32.h>
#include <linux/jffs2.h>
#include <linux/mtd/mtd.h>
#include <linux/slab.h>
#include "nodelist.h"
#include "debug.h"
#ifdef JFFS2_DBG_SANITY_CHECKS
void
__jffs2_dbg_acct_sanity_check_nolock(struct jffs2_sb_info *c,
struct jffs2_eraseblock *jeb)
{
if (unlikely(jeb && jeb->used_size + jeb->dirty_size +
jeb->free_size + jeb->wasted_size +
jeb->unchecked_size != c->sector_size)) {
JFFS2_ERROR("eeep, space accounting for block at 0x%08x is screwed.\n" , jeb->offset);
JFFS2_ERROR("free %#08x + dirty %#08x + used %#08x + wasted %#08x + unchecked %#08x != total %#08x.\n" ,
jeb->free_size, jeb->dirty_size, jeb->used_size,
jeb->wasted_size, jeb->unchecked_size, c->sector_size);
BUG();
}
if (unlikely(c->used_size + c->dirty_size + c->free_size + c->erasing_size + c->bad_size
+ c->wasted_size + c->unchecked_size != c->flash_size)) {
JFFS2_ERROR("eeep, space accounting superblock info is screwed.\n" );
JFFS2_ERROR("free %#08x + dirty %#08x + used %#08x + erasing %#08x + bad %#08x + wasted %#08x + unchecked %#08x != total %#08x.\n" ,
c->free_size, c->dirty_size, c->used_size, c->erasing_size, c->bad_size,
c->wasted_size, c->unchecked_size, c->flash_size);
BUG();
}
}
void
__jffs2_dbg_acct_sanity_check(struct jffs2_sb_info *c,
struct jffs2_eraseblock *jeb)
{
spin_lock(&c->erase_completion_lock);
jffs2_dbg_acct_sanity_check_nolock(c, jeb);
spin_unlock(&c->erase_completion_lock);
}
#endif /* JFFS2_DBG_SANITY_CHECKS */
#ifdef JFFS2_DBG_PARANOIA_CHECKS
/*
* Check the fragtree .
*/
void
__jffs2_dbg_fragtree_paranoia_check(struct jffs2_inode_info *f)
{
mutex_lock(&f->sem);
__jffs2_dbg_fragtree_paranoia_check_nolock(f);
mutex_unlock(&f->sem);
}
void
__jffs2_dbg_fragtree_paranoia_check_nolock(struct jffs2_inode_info *f)
{
struct jffs2_node_frag *frag;
int bitched = 0 ;
for (frag = frag_first(&f->fragtree); frag; frag = frag_next(frag)) {
struct jffs2_full_dnode *fn = frag->node;
if (!fn || !fn->raw)
continue ;
if (ref_flags(fn->raw) == REF_PRISTINE) {
if (fn->frags > 1 ) {
JFFS2_ERROR("REF_PRISTINE node at 0x%08x had %d frags. Tell dwmw2.\n" ,
ref_offset(fn->raw), fn->frags);
bitched = 1 ;
}
/* A hole node which isn't multi-page should be garbage-collected
and merged anyway , so we just check for the frag size here ,
rather than mucking around with actually reading the node
and checking the compression type , which is the real way
to tell a hole node. */
if (frag->ofs & (PAGE_SIZE-1 ) && frag_prev(frag)
&& frag_prev(frag)->size < PAGE_SIZE && frag_prev(frag)->node) {
JFFS2_ERROR("REF_PRISTINE node at 0x%08x had a previous non-hole frag in the same page. Tell dwmw2.\n" ,
ref_offset(fn->raw));
bitched = 1 ;
}
if ((frag->ofs+frag->size) & (PAGE_SIZE-1 ) && frag_next(frag)
&& frag_next(frag)->size < PAGE_SIZE && frag_next(frag)->node) {
JFFS2_ERROR("REF_PRISTINE node at 0x%08x (%08x-%08x) had a following non-hole frag in the same page. Tell dwmw2.\n" ,
ref_offset(fn->raw), frag->ofs, frag->ofs+frag->size);
bitched = 1 ;
}
}
}
if (bitched) {
JFFS2_ERROR("fragtree is corrupted.\n" );
__jffs2_dbg_dump_fragtree_nolock(f);
BUG();
}
}
/*
* Check if the flash contains all 0 xFF before we start writing .
*/
void
__jffs2_dbg_prewrite_paranoia_check(struct jffs2_sb_info *c,
uint32_t ofs, int len)
{
size_t retlen;
int ret, i;
unsigned char *buf;
buf = kmalloc(len, GFP_KERNEL);
if (!buf)
return ;
ret = jffs2_flash_read(c, ofs, len, &retlen, buf);
if (ret || (retlen != len)) {
JFFS2_WARNING("read %d bytes failed or short. ret %d, retlen %zd.\n" ,
len, ret, retlen);
kfree(buf);
return ;
}
ret = 0 ;
for (i = 0 ; i < len; i++)
if (buf[i] != 0 xff)
ret = 1 ;
if (ret) {
JFFS2_ERROR("argh, about to write node to %#08x on flash, but there are data already there. The first corrupted byte is at %#08x offset.\n" ,
ofs, ofs + i);
__jffs2_dbg_dump_buffer(buf, len, ofs);
kfree(buf);
BUG();
}
kfree(buf);
}
static void __jffs2_dbg_superblock_counts(struct jffs2_sb_info *c)
{
struct jffs2_eraseblock *jeb;
uint32_t free = 0 , dirty = 0 , used = 0 , wasted = 0 ,
erasing = 0 , bad = 0 , unchecked = 0 ;
int nr_counted = 0 ;
int dump = 0 ;
if (c->gcblock) {
nr_counted++;
free += c->gcblock->free_size;
dirty += c->gcblock->dirty_size;
used += c->gcblock->used_size;
wasted += c->gcblock->wasted_size;
unchecked += c->gcblock->unchecked_size;
}
if (c->nextblock) {
nr_counted++;
free += c->nextblock->free_size;
dirty += c->nextblock->dirty_size;
used += c->nextblock->used_size;
wasted += c->nextblock->wasted_size;
unchecked += c->nextblock->unchecked_size;
}
list_for_each_entry(jeb, &c->clean_list, list) {
nr_counted++;
free += jeb->free_size;
dirty += jeb->dirty_size;
used += jeb->used_size;
wasted += jeb->wasted_size;
unchecked += jeb->unchecked_size;
}
list_for_each_entry(jeb, &c->very_dirty_list, list) {
nr_counted++;
free += jeb->free_size;
dirty += jeb->dirty_size;
used += jeb->used_size;
wasted += jeb->wasted_size;
unchecked += jeb->unchecked_size;
}
list_for_each_entry(jeb, &c->dirty_list, list) {
nr_counted++;
free += jeb->free_size;
dirty += jeb->dirty_size;
used += jeb->used_size;
wasted += jeb->wasted_size;
unchecked += jeb->unchecked_size;
}
list_for_each_entry(jeb, &c->erasable_list, list) {
nr_counted++;
free += jeb->free_size;
dirty += jeb->dirty_size;
used += jeb->used_size;
wasted += jeb->wasted_size;
unchecked += jeb->unchecked_size;
}
list_for_each_entry(jeb, &c->erasable_pending_wbuf_list, list) {
nr_counted++;
free += jeb->free_size;
dirty += jeb->dirty_size;
used += jeb->used_size;
wasted += jeb->wasted_size;
unchecked += jeb->unchecked_size;
}
list_for_each_entry(jeb, &c->erase_pending_list, list) {
nr_counted++;
free += jeb->free_size;
dirty += jeb->dirty_size;
used += jeb->used_size;
wasted += jeb->wasted_size;
unchecked += jeb->unchecked_size;
}
list_for_each_entry(jeb, &c->free_list, list) {
nr_counted++;
free += jeb->free_size;
dirty += jeb->dirty_size;
used += jeb->used_size;
wasted += jeb->wasted_size;
unchecked += jeb->unchecked_size;
}
list_for_each_entry(jeb, &c->bad_used_list, list) {
nr_counted++;
free += jeb->free_size;
dirty += jeb->dirty_size;
used += jeb->used_size;
wasted += jeb->wasted_size;
unchecked += jeb->unchecked_size;
}
list_for_each_entry(jeb, &c->erasing_list, list) {
nr_counted++;
erasing += c->sector_size;
}
list_for_each_entry(jeb, &c->erase_checking_list, list) {
nr_counted++;
erasing += c->sector_size;
}
list_for_each_entry(jeb, &c->erase_complete_list, list) {
nr_counted++;
erasing += c->sector_size;
}
list_for_each_entry(jeb, &c->bad_list, list) {
nr_counted++;
bad += c->sector_size;
}
#define check(sz) \
do { \
if (sz != c->sz## _size) { \
pr_warn("%s_size mismatch counted 0x%x, c->%s_size 0x%x\n" , \
#sz , sz, #sz , c->sz## _size); \
dump = 1 ; \
} \
} while (0 )
check(free);
check(dirty);
check(used);
check(wasted);
check(unchecked);
check(bad);
check(erasing);
#undef check
if (nr_counted != c->nr_blocks) {
pr_warn("%s counted only 0x%x blocks of 0x%x. Where are the others?\n" ,
__func__, nr_counted, c->nr_blocks);
dump = 1 ;
}
if (dump) {
__jffs2_dbg_dump_block_lists_nolock(c);
BUG();
}
}
/*
* Check the space accounting and node_ref list correctness for the JFFS2 erasable block ' jeb ' .
*/
void
__jffs2_dbg_acct_paranoia_check(struct jffs2_sb_info *c,
struct jffs2_eraseblock *jeb)
{
spin_lock(&c->erase_completion_lock);
__jffs2_dbg_acct_paranoia_check_nolock(c, jeb);
spin_unlock(&c->erase_completion_lock);
}
void
__jffs2_dbg_acct_paranoia_check_nolock(struct jffs2_sb_info *c,
struct jffs2_eraseblock *jeb)
{
uint32_t my_used_size = 0 ;
uint32_t my_unchecked_size = 0 ;
uint32_t my_dirty_size = 0 ;
struct jffs2_raw_node_ref *ref2 = jeb->first_node;
while (ref2) {
uint32_t totlen = ref_totlen(c, jeb, ref2);
if (ref_offset(ref2) < jeb->offset ||
ref_offset(ref2) > jeb->offset + c->sector_size) {
JFFS2_ERROR("node_ref %#08x shouldn't be in block at %#08x.\n" ,
ref_offset(ref2), jeb->offset);
goto error;
}
if (ref_flags(ref2) == REF_UNCHECKED)
my_unchecked_size += totlen;
else if (!ref_obsolete(ref2))
my_used_size += totlen;
else
my_dirty_size += totlen;
if ((!ref_next(ref2)) != (ref2 == jeb->last_node)) {
JFFS2_ERROR("node_ref for node at %#08x (mem %p) has next at %#08x (mem %p), last_node is at %#08x (mem %p).\n" ,
ref_offset(ref2), ref2, ref_offset(ref_next(ref2)), ref_next(ref2),
ref_offset(jeb->last_node), jeb->last_node);
goto error;
}
ref2 = ref_next(ref2);
}
if (my_used_size != jeb->used_size) {
JFFS2_ERROR("Calculated used size %#08x != stored used size %#08x.\n" ,
my_used_size, jeb->used_size);
goto error;
}
if (my_unchecked_size != jeb->unchecked_size) {
JFFS2_ERROR("Calculated unchecked size %#08x != stored unchecked size %#08x.\n" ,
my_unchecked_size, jeb->unchecked_size);
goto error;
}
#if 0
/* This should work when we implement ref->__totlen elemination */
if (my_dirty_size != jeb->dirty_size + jeb->wasted_size) {
JFFS2_ERROR("Calculated dirty+wasted size %#08x != stored dirty + wasted size %#08x\n" ,
my_dirty_size, jeb->dirty_size + jeb->wasted_size);
goto error;
}
if (jeb->free_size == 0
&& my_used_size + my_unchecked_size + my_dirty_size != c->sector_size) {
JFFS2_ERROR("The sum of all nodes in block (%#x) != size of block (%#x)\n" ,
my_used_size + my_unchecked_size + my_dirty_size,
c->sector_size);
goto error;
}
#endif
if (!(c->flags & (JFFS2_SB_FLAG_BUILDING|JFFS2_SB_FLAG_SCANNING)))
__jffs2_dbg_superblock_counts(c);
return ;
error:
__jffs2_dbg_dump_node_refs_nolock(c, jeb);
__jffs2_dbg_dump_jeb_nolock(jeb);
__jffs2_dbg_dump_block_lists_nolock(c);
BUG();
}
#endif /* JFFS2_DBG_PARANOIA_CHECKS */
#if defined (JFFS2_DBG_DUMPS) || defined (JFFS2_DBG_PARANOIA_CHECKS)
/*
* Dump the node_refs of the ' jeb ' JFFS2 eraseblock .
*/
void
__jffs2_dbg_dump_node_refs(struct jffs2_sb_info *c,
struct jffs2_eraseblock *jeb)
{
spin_lock(&c->erase_completion_lock);
__jffs2_dbg_dump_node_refs_nolock(c, jeb);
spin_unlock(&c->erase_completion_lock);
}
void
__jffs2_dbg_dump_node_refs_nolock(struct jffs2_sb_info *c,
struct jffs2_eraseblock *jeb)
{
struct jffs2_raw_node_ref *ref;
int i = 0 ;
printk(JFFS2_DBG_MSG_PREFIX " Dump node_refs of the eraseblock %#08x\n" , jeb->offset);
if (!jeb->first_node) {
printk(JFFS2_DBG_MSG_PREFIX " no nodes in the eraseblock %#08x\n" , jeb->offset);
return ;
}
printk(JFFS2_DBG);
for (ref = jeb->first_node; ; ref = ref_next(ref)) {
printk("%#08x" , ref_offset(ref));
#ifdef TEST_TOTLEN
printk("(%x)" , ref->__totlen);
#endif
if (ref_next(ref))
printk("->" );
else
break ;
if (++i == 4 ) {
i = 0 ;
printk("\n" JFFS2_DBG);
}
}
printk("\n" );
}
/*
* Dump an eraseblock ' s space accounting .
*/
void
__jffs2_dbg_dump_jeb(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb)
{
spin_lock(&c->erase_completion_lock);
__jffs2_dbg_dump_jeb_nolock(jeb);
spin_unlock(&c->erase_completion_lock);
}
void
__jffs2_dbg_dump_jeb_nolock(struct jffs2_eraseblock *jeb)
{
if (!jeb)
return ;
printk(JFFS2_DBG_MSG_PREFIX " dump space accounting for the eraseblock at %#08x:\n" ,
jeb->offset);
printk(JFFS2_DBG "used_size: %#08x\n" , jeb->used_size);
printk(JFFS2_DBG "dirty_size: %#08x\n" , jeb->dirty_size);
printk(JFFS2_DBG "wasted_size: %#08x\n" , jeb->wasted_size);
printk(JFFS2_DBG "unchecked_size: %#08x\n" , jeb->unchecked_size);
printk(JFFS2_DBG "free_size: %#08x\n" , jeb->free_size);
}
void
__jffs2_dbg_dump_block_lists(struct jffs2_sb_info *c)
{
spin_lock(&c->erase_completion_lock);
__jffs2_dbg_dump_block_lists_nolock(c);
spin_unlock(&c->erase_completion_lock);
}
void
__jffs2_dbg_dump_block_lists_nolock(struct jffs2_sb_info *c)
{
printk(JFFS2_DBG_MSG_PREFIX " dump JFFS2 blocks lists:\n" );
printk(JFFS2_DBG "flash_size: %#08x\n" , c->flash_size);
printk(JFFS2_DBG "used_size: %#08x\n" , c->used_size);
printk(JFFS2_DBG "dirty_size: %#08x\n" , c->dirty_size);
printk(JFFS2_DBG "wasted_size: %#08x\n" , c->wasted_size);
printk(JFFS2_DBG "unchecked_size: %#08x\n" , c->unchecked_size);
printk(JFFS2_DBG "free_size: %#08x\n" , c->free_size);
printk(JFFS2_DBG "erasing_size: %#08x\n" , c->erasing_size);
printk(JFFS2_DBG "bad_size: %#08x\n" , c->bad_size);
printk(JFFS2_DBG "sector_size: %#08x\n" , c->sector_size);
printk(JFFS2_DBG "jffs2_reserved_blocks size: %#08x\n" ,
c->sector_size * c->resv_blocks_write);
if (c->nextblock)
printk(JFFS2_DBG "nextblock: %#08x (used %#08x, dirty %#08x, wasted %#08x, unchecked %#08x, free %#08x)\n" ,
c->nextblock->offset, c->nextblock->used_size,
c->nextblock->dirty_size, c->nextblock->wasted_size,
c->nextblock->unchecked_size, c->nextblock->free_size);
else
printk(JFFS2_DBG "nextblock: NULL\n" );
if (c->gcblock)
printk(JFFS2_DBG "gcblock: %#08x (used %#08x, dirty %#08x, wasted %#08x, unchecked %#08x, free %#08x)\n" ,
c->gcblock->offset, c->gcblock->used_size, c->gcblock->dirty_size,
c->gcblock->wasted_size, c->gcblock->unchecked_size, c->gcblock->free_size);
else
printk(JFFS2_DBG "gcblock: NULL\n" );
if (list_empty(&c->clean_list)) {
printk(JFFS2_DBG "clean_list: empty\n" );
} else {
struct list_head *this ;
int numblocks = 0 ;
uint32_t dirty = 0 ;
list_for_each(this , &c->clean_list) {
struct jffs2_eraseblock *jeb = list_entry(this , struct jffs2_eraseblock, list);
numblocks ++;
dirty += jeb->wasted_size;
if (!(jeb->used_size == 0 && jeb->dirty_size == 0 && jeb->wasted_size == 0 )) {
printk(JFFS2_DBG "clean_list: %#08x (used %#08x, dirty %#08x, wasted %#08x, unchecked %#08x, free %#08x)\n" ,
jeb->offset, jeb->used_size, jeb->dirty_size, jeb->wasted_size,
jeb->unchecked_size, jeb->free_size);
}
}
printk (JFFS2_DBG "Contains %d blocks with total wasted size %u, average wasted size: %u\n" ,
numblocks, dirty, dirty / numblocks);
}
if (list_empty(&c->very_dirty_list)) {
printk(JFFS2_DBG "very_dirty_list: empty\n" );
} else {
struct list_head *this ;
int numblocks = 0 ;
uint32_t dirty = 0 ;
list_for_each(this , &c->very_dirty_list) {
struct jffs2_eraseblock *jeb = list_entry(this , struct jffs2_eraseblock, list);
numblocks ++;
dirty += jeb->dirty_size;
if (!(jeb->used_size == 0 && jeb->dirty_size == 0 && jeb->wasted_size == 0 )) {
printk(JFFS2_DBG "very_dirty_list: %#08x (used %#08x, dirty %#08x, wasted %#08x, unchecked %#08x, free %#08x)\n" ,
jeb->offset, jeb->used_size, jeb->dirty_size, jeb->wasted_size,
jeb->unchecked_size, jeb->free_size);
}
}
printk (JFFS2_DBG "Contains %d blocks with total dirty size %u, average dirty size: %u\n" ,
numblocks, dirty, dirty / numblocks);
}
if (list_empty(&c->dirty_list)) {
printk(JFFS2_DBG "dirty_list: empty\n" );
} else {
struct list_head *this ;
int numblocks = 0 ;
uint32_t dirty = 0 ;
list_for_each(this , &c->dirty_list) {
struct jffs2_eraseblock *jeb = list_entry(this , struct jffs2_eraseblock, list);
numblocks ++;
dirty += jeb->dirty_size;
if (!(jeb->used_size == 0 && jeb->dirty_size == 0 && jeb->wasted_size == 0 )) {
printk(JFFS2_DBG "dirty_list: %#08x (used %#08x, dirty %#08x, wasted %#08x, unchecked %#08x, free %#08x)\n" ,
jeb->offset, jeb->used_size, jeb->dirty_size, jeb->wasted_size,
jeb->unchecked_size, jeb->free_size);
}
}
printk (JFFS2_DBG "contains %d blocks with total dirty size %u, average dirty size: %u\n" ,
numblocks, dirty, dirty / numblocks);
}
if (list_empty(&c->erasable_list)) {
printk(JFFS2_DBG "erasable_list: empty\n" );
} else {
struct list_head *this ;
list_for_each(this , &c->erasable_list) {
struct jffs2_eraseblock *jeb = list_entry(this , struct jffs2_eraseblock, list);
if (!(jeb->used_size == 0 && jeb->dirty_size == 0 && jeb->wasted_size == 0 )) {
printk(JFFS2_DBG "erasable_list: %#08x (used %#08x, dirty %#08x, wasted %#08x, unchecked %#08x, free %#08x)\n" ,
jeb->offset, jeb->used_size, jeb->dirty_size, jeb->wasted_size,
jeb->unchecked_size, jeb->free_size);
}
}
}
if (list_empty(&c->erasing_list)) {
printk(JFFS2_DBG "erasing_list: empty\n" );
} else {
struct list_head *this ;
list_for_each(this , &c->erasing_list) {
struct jffs2_eraseblock *jeb = list_entry(this , struct jffs2_eraseblock, list);
if (!(jeb->used_size == 0 && jeb->dirty_size == 0 && jeb->wasted_size == 0 )) {
printk(JFFS2_DBG "erasing_list: %#08x (used %#08x, dirty %#08x, wasted %#08x, unchecked %#08x, free %#08x)\n" ,
jeb->offset, jeb->used_size, jeb->dirty_size, jeb->wasted_size,
jeb->unchecked_size, jeb->free_size);
}
}
}
if (list_empty(&c->erase_checking_list)) {
printk(JFFS2_DBG "erase_checking_list: empty\n" );
} else {
struct list_head *this ;
list_for_each(this , &c->erase_checking_list) {
struct jffs2_eraseblock *jeb = list_entry(this , struct jffs2_eraseblock, list);
if (!(jeb->used_size == 0 && jeb->dirty_size == 0 && jeb->wasted_size == 0 )) {
printk(JFFS2_DBG "erase_checking_list: %#08x (used %#08x, dirty %#08x, wasted %#08x, unchecked %#08x, free %#08x)\n" ,
jeb->offset, jeb->used_size, jeb->dirty_size, jeb->wasted_size,
jeb->unchecked_size, jeb->free_size);
}
}
}
if (list_empty(&c->erase_pending_list)) {
printk(JFFS2_DBG "erase_pending_list: empty\n" );
} else {
struct list_head *this ;
list_for_each(this , &c->erase_pending_list) {
struct jffs2_eraseblock *jeb = list_entry(this , struct jffs2_eraseblock, list);
if (!(jeb->used_size == 0 && jeb->dirty_size == 0 && jeb->wasted_size == 0 )) {
printk(JFFS2_DBG "erase_pending_list: %#08x (used %#08x, dirty %#08x, wasted %#08x, unchecked %#08x, free %#08x)\n" ,
jeb->offset, jeb->used_size, jeb->dirty_size, jeb->wasted_size,
jeb->unchecked_size, jeb->free_size);
}
}
}
if (list_empty(&c->erasable_pending_wbuf_list)) {
printk(JFFS2_DBG "erasable_pending_wbuf_list: empty\n" );
} else {
struct list_head *this ;
list_for_each(this , &c->erasable_pending_wbuf_list) {
struct jffs2_eraseblock *jeb = list_entry(this , struct jffs2_eraseblock, list);
if (!(jeb->used_size == 0 && jeb->dirty_size == 0 && jeb->wasted_size == 0 )) {
printk(JFFS2_DBG "erasable_pending_wbuf_list: %#08x (used %#08x, dirty %#08x, wasted %#08x, unchecked %#08x, free %#08x)\n" ,
jeb->offset, jeb->used_size, jeb->dirty_size, jeb->wasted_size,
jeb->unchecked_size, jeb->free_size);
}
}
}
if (list_empty(&c->free_list)) {
printk(JFFS2_DBG "free_list: empty\n" );
} else {
struct list_head *this ;
list_for_each(this , &c->free_list) {
struct jffs2_eraseblock *jeb = list_entry(this , struct jffs2_eraseblock, list);
if (!(jeb->used_size == 0 && jeb->dirty_size == 0 && jeb->wasted_size == 0 )) {
printk(JFFS2_DBG "free_list: %#08x (used %#08x, dirty %#08x, wasted %#08x, unchecked %#08x, free %#08x)\n" ,
jeb->offset, jeb->used_size, jeb->dirty_size, jeb->wasted_size,
jeb->unchecked_size, jeb->free_size);
}
}
}
if (list_empty(&c->bad_list)) {
printk(JFFS2_DBG "bad_list: empty\n" );
} else {
struct list_head *this ;
list_for_each(this , &c->bad_list) {
struct jffs2_eraseblock *jeb = list_entry(this , struct jffs2_eraseblock, list);
if (!(jeb->used_size == 0 && jeb->dirty_size == 0 && jeb->wasted_size == 0 )) {
printk(JFFS2_DBG "bad_list: %#08x (used %#08x, dirty %#08x, wasted %#08x, unchecked %#08x, free %#08x)\n" ,
jeb->offset, jeb->used_size, jeb->dirty_size, jeb->wasted_size,
jeb->unchecked_size, jeb->free_size);
}
}
}
if (list_empty(&c->bad_used_list)) {
printk(JFFS2_DBG "bad_used_list: empty\n" );
} else {
struct list_head *this ;
list_for_each(this , &c->bad_used_list) {
struct jffs2_eraseblock *jeb = list_entry(this , struct jffs2_eraseblock, list);
if (!(jeb->used_size == 0 && jeb->dirty_size == 0 && jeb->wasted_size == 0 )) {
printk(JFFS2_DBG "bad_used_list: %#08x (used %#08x, dirty %#08x, wasted %#08x, unchecked %#08x, free %#08x)\n" ,
jeb->offset, jeb->used_size, jeb->dirty_size, jeb->wasted_size,
jeb->unchecked_size, jeb->free_size);
}
}
}
}
void
__jffs2_dbg_dump_fragtree(struct jffs2_inode_info *f)
{
mutex_lock(&f->sem);
jffs2_dbg_dump_fragtree_nolock(f);
mutex_unlock(&f->sem);
}
void
__jffs2_dbg_dump_fragtree_nolock(struct jffs2_inode_info *f)
{
struct jffs2_node_frag *this = frag_first(&f->fragtree);
uint32_t lastofs = 0 ;
int buggy = 0 ;
printk(JFFS2_DBG_MSG_PREFIX " dump fragtree of ino #%u\n" , f->inocache->ino);
while (this ) {
if (this ->node)
printk(JFFS2_DBG "frag %#04x-%#04x: %#08x(%d) on flash (*%p), left (%p), right (%p), parent (%p)\n" ,
this ->ofs, this ->ofs+this ->size, ref_offset(this ->node->raw),
ref_flags(this ->node->raw), this , frag_left(this ), frag_right(this ),
frag_parent(this ));
else
printk(JFFS2_DBG "frag %#04x-%#04x: hole (*%p). left (%p), right (%p), parent (%p)\n" ,
this ->ofs, this ->ofs+this ->size, this , frag_left(this ),
frag_right(this ), frag_parent(this ));
if (this ->ofs != lastofs)
buggy = 1 ;
lastofs = this ->ofs + this ->size;
this = frag_next(this );
}
if (f->metadata)
printk(JFFS2_DBG "metadata at 0x%08x\n" , ref_offset(f->metadata->raw));
if (buggy) {
JFFS2_ERROR("frag tree got a hole in it.\n" );
BUG();
}
}
#define JFFS2_BUFDUMP_BYTES_PER_LINE 32
void
__jffs2_dbg_dump_buffer(unsigned char *buf, int len, uint32_t offs)
{
int skip;
int i;
printk(JFFS2_DBG_MSG_PREFIX " dump from offset %#08x to offset %#08x (%x bytes).\n" ,
offs, offs + len, len);
i = skip = offs % JFFS2_BUFDUMP_BYTES_PER_LINE;
offs = offs & ~(JFFS2_BUFDUMP_BYTES_PER_LINE - 1 );
if (skip != 0 )
printk(JFFS2_DBG "%#08x: " , offs);
while (skip--)
printk(" " );
while (i < len) {
if ((i % JFFS2_BUFDUMP_BYTES_PER_LINE) == 0 && i != len -1 ) {
if (i != 0 )
printk("\n" );
offs += JFFS2_BUFDUMP_BYTES_PER_LINE;
printk(JFFS2_DBG "%0#8x: " , offs);
}
printk("%02x " , buf[i]);
i += 1 ;
}
printk("\n" );
}
/*
* Dump a JFFS2 node .
*/
void
__jffs2_dbg_dump_node(struct jffs2_sb_info *c, uint32_t ofs)
{
union jffs2_node_union node;
int len = sizeof (union jffs2_node_union);
size_t retlen;
uint32_t crc;
int ret;
printk(JFFS2_DBG_MSG_PREFIX " dump node at offset %#08x.\n" , ofs);
ret = jffs2_flash_read(c, ofs, len, &retlen, (unsigned char *)&node);
if (ret || (retlen != len)) {
JFFS2_ERROR("read %d bytes failed or short. ret %d, retlen %zd.\n" ,
len, ret, retlen);
return ;
}
printk(JFFS2_DBG "magic:\t%#04x\n" , je16_to_cpu(node.u.magic));
printk(JFFS2_DBG "nodetype:\t%#04x\n" , je16_to_cpu(node.u.nodetype));
printk(JFFS2_DBG "totlen:\t%#08x\n" , je32_to_cpu(node.u.totlen));
printk(JFFS2_DBG "hdr_crc:\t%#08x\n" , je32_to_cpu(node.u.hdr_crc));
crc = crc32(0 , &node.u, sizeof (node.u) - 4 );
if (crc != je32_to_cpu(node.u.hdr_crc)) {
JFFS2_ERROR("wrong common header CRC.\n" );
return ;
}
if (je16_to_cpu(node.u.magic) != JFFS2_MAGIC_BITMASK &&
je16_to_cpu(node.u.magic) != JFFS2_OLD_MAGIC_BITMASK)
{
JFFS2_ERROR("wrong node magic: %#04x instead of %#04x.\n" ,
je16_to_cpu(node.u.magic), JFFS2_MAGIC_BITMASK);
return ;
}
switch (je16_to_cpu(node.u.nodetype)) {
case JFFS2_NODETYPE_INODE:
printk(JFFS2_DBG "the node is inode node\n" );
printk(JFFS2_DBG "ino:\t%#08x\n" , je32_to_cpu(node.i.ino));
printk(JFFS2_DBG "version:\t%#08x\n" , je32_to_cpu(node.i.version));
printk(JFFS2_DBG "mode:\t%#08x\n" , node.i.mode.m);
printk(JFFS2_DBG "uid:\t%#04x\n" , je16_to_cpu(node.i.uid));
printk(JFFS2_DBG "gid:\t%#04x\n" , je16_to_cpu(node.i.gid));
printk(JFFS2_DBG "isize:\t%#08x\n" , je32_to_cpu(node.i.isize));
printk(JFFS2_DBG "atime:\t%#08x\n" , je32_to_cpu(node.i.atime));
printk(JFFS2_DBG "mtime:\t%#08x\n" , je32_to_cpu(node.i.mtime));
printk(JFFS2_DBG "ctime:\t%#08x\n" , je32_to_cpu(node.i.ctime));
printk(JFFS2_DBG "offset:\t%#08x\n" , je32_to_cpu(node.i.offset));
printk(JFFS2_DBG "csize:\t%#08x\n" , je32_to_cpu(node.i.csize));
printk(JFFS2_DBG "dsize:\t%#08x\n" , je32_to_cpu(node.i.dsize));
printk(JFFS2_DBG "compr:\t%#02x\n" , node.i.compr);
printk(JFFS2_DBG "usercompr:\t%#02x\n" , node.i.usercompr);
printk(JFFS2_DBG "flags:\t%#04x\n" , je16_to_cpu(node.i.flags));
printk(JFFS2_DBG "data_crc:\t%#08x\n" , je32_to_cpu(node.i.data_crc));
printk(JFFS2_DBG "node_crc:\t%#08x\n" , je32_to_cpu(node.i.node_crc));
crc = crc32(0 , &node.i, sizeof (node.i) - 8 );
if (crc != je32_to_cpu(node.i.node_crc)) {
JFFS2_ERROR("wrong node header CRC.\n" );
return ;
}
break ;
case JFFS2_NODETYPE_DIRENT:
printk(JFFS2_DBG "the node is dirent node\n" );
printk(JFFS2_DBG "pino:\t%#08x\n" , je32_to_cpu(node.d.pino));
printk(JFFS2_DBG "version:\t%#08x\n" , je32_to_cpu(node.d.version));
printk(JFFS2_DBG "ino:\t%#08x\n" , je32_to_cpu(node.d.ino));
printk(JFFS2_DBG "mctime:\t%#08x\n" , je32_to_cpu(node.d.mctime));
printk(JFFS2_DBG "nsize:\t%#02x\n" , node.d.nsize);
printk(JFFS2_DBG "type:\t%#02x\n" , node.d.type);
printk(JFFS2_DBG "node_crc:\t%#08x\n" , je32_to_cpu(node.d.node_crc));
printk(JFFS2_DBG "name_crc:\t%#08x\n" , je32_to_cpu(node.d.name_crc));
node.d.name[node.d.nsize] = '\0' ;
printk(JFFS2_DBG "name:\t\" %s\"\n" , node.d.name);
crc = crc32(0 , &node.d, sizeof (node.d) - 8 );
if (crc != je32_to_cpu(node.d.node_crc)) {
JFFS2_ERROR("wrong node header CRC.\n" );
return ;
}
break ;
default :
printk(JFFS2_DBG "node type is unknown\n" );
break ;
}
}
#endif /* JFFS2_DBG_DUMPS || JFFS2_DBG_PARANOIA_CHECKS */
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(vorverarbeitet am 2026-09-28)
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