mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-26 20:09:02 +09:00
![Jeroen Hofstee](/assets/img/avatar_default.png)
Remove self assignments which is just dead code to prevent compiler warnings about non used arguments. For u-boot this does not prevent any warning though, on the contrary it actual introduces warnings when compiling with clang. Remove them. Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>
523 lines
13 KiB
C
523 lines
13 KiB
C
/*
|
|
* YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
|
|
*
|
|
* Copyright (C) 2002-2011 Aleph One Ltd.
|
|
* for Toby Churchill Ltd and Brightstar Engineering
|
|
*
|
|
* Created by Charles Manning <charles@aleph1.co.uk>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
|
|
#include "yaffs_verify.h"
|
|
#include "yaffs_trace.h"
|
|
#include "yaffs_bitmap.h"
|
|
#include "yaffs_getblockinfo.h"
|
|
#include "yaffs_nand.h"
|
|
|
|
int yaffs_skip_verification(struct yaffs_dev *dev)
|
|
{
|
|
return !(yaffs_trace_mask &
|
|
(YAFFS_TRACE_VERIFY | YAFFS_TRACE_VERIFY_FULL));
|
|
}
|
|
|
|
static int yaffs_skip_full_verification(struct yaffs_dev *dev)
|
|
{
|
|
return !(yaffs_trace_mask & (YAFFS_TRACE_VERIFY_FULL));
|
|
}
|
|
|
|
static int yaffs_skip_nand_verification(struct yaffs_dev *dev)
|
|
{
|
|
return !(yaffs_trace_mask & (YAFFS_TRACE_VERIFY_NAND));
|
|
}
|
|
|
|
static const char * const block_state_name[] = {
|
|
"Unknown",
|
|
"Needs scan",
|
|
"Scanning",
|
|
"Empty",
|
|
"Allocating",
|
|
"Full",
|
|
"Dirty",
|
|
"Checkpoint",
|
|
"Collecting",
|
|
"Dead"
|
|
};
|
|
|
|
void yaffs_verify_blk(struct yaffs_dev *dev, struct yaffs_block_info *bi, int n)
|
|
{
|
|
int actually_used;
|
|
int in_use;
|
|
|
|
if (yaffs_skip_verification(dev))
|
|
return;
|
|
|
|
/* Report illegal runtime states */
|
|
if (bi->block_state >= YAFFS_NUMBER_OF_BLOCK_STATES)
|
|
yaffs_trace(YAFFS_TRACE_VERIFY,
|
|
"Block %d has undefined state %d",
|
|
n, bi->block_state);
|
|
|
|
switch (bi->block_state) {
|
|
case YAFFS_BLOCK_STATE_UNKNOWN:
|
|
case YAFFS_BLOCK_STATE_SCANNING:
|
|
case YAFFS_BLOCK_STATE_NEEDS_SCAN:
|
|
yaffs_trace(YAFFS_TRACE_VERIFY,
|
|
"Block %d has bad run-state %s",
|
|
n, block_state_name[bi->block_state]);
|
|
}
|
|
|
|
/* Check pages in use and soft deletions are legal */
|
|
|
|
actually_used = bi->pages_in_use - bi->soft_del_pages;
|
|
|
|
if (bi->pages_in_use < 0 ||
|
|
bi->pages_in_use > dev->param.chunks_per_block ||
|
|
bi->soft_del_pages < 0 ||
|
|
bi->soft_del_pages > dev->param.chunks_per_block ||
|
|
actually_used < 0 || actually_used > dev->param.chunks_per_block)
|
|
yaffs_trace(YAFFS_TRACE_VERIFY,
|
|
"Block %d has illegal values pages_in_used %d soft_del_pages %d",
|
|
n, bi->pages_in_use, bi->soft_del_pages);
|
|
|
|
/* Check chunk bitmap legal */
|
|
in_use = yaffs_count_chunk_bits(dev, n);
|
|
if (in_use != bi->pages_in_use)
|
|
yaffs_trace(YAFFS_TRACE_VERIFY,
|
|
"Block %d has inconsistent values pages_in_use %d counted chunk bits %d",
|
|
n, bi->pages_in_use, in_use);
|
|
}
|
|
|
|
void yaffs_verify_collected_blk(struct yaffs_dev *dev,
|
|
struct yaffs_block_info *bi, int n)
|
|
{
|
|
yaffs_verify_blk(dev, bi, n);
|
|
|
|
/* After collection the block should be in the erased state */
|
|
|
|
if (bi->block_state != YAFFS_BLOCK_STATE_COLLECTING &&
|
|
bi->block_state != YAFFS_BLOCK_STATE_EMPTY) {
|
|
yaffs_trace(YAFFS_TRACE_ERROR,
|
|
"Block %d is in state %d after gc, should be erased",
|
|
n, bi->block_state);
|
|
}
|
|
}
|
|
|
|
void yaffs_verify_blocks(struct yaffs_dev *dev)
|
|
{
|
|
int i;
|
|
int state_count[YAFFS_NUMBER_OF_BLOCK_STATES];
|
|
int illegal_states = 0;
|
|
|
|
if (yaffs_skip_verification(dev))
|
|
return;
|
|
|
|
memset(state_count, 0, sizeof(state_count));
|
|
|
|
for (i = dev->internal_start_block; i <= dev->internal_end_block; i++) {
|
|
struct yaffs_block_info *bi = yaffs_get_block_info(dev, i);
|
|
yaffs_verify_blk(dev, bi, i);
|
|
|
|
if (bi->block_state < YAFFS_NUMBER_OF_BLOCK_STATES)
|
|
state_count[bi->block_state]++;
|
|
else
|
|
illegal_states++;
|
|
}
|
|
|
|
yaffs_trace(YAFFS_TRACE_VERIFY, "Block summary");
|
|
|
|
yaffs_trace(YAFFS_TRACE_VERIFY,
|
|
"%d blocks have illegal states",
|
|
illegal_states);
|
|
if (state_count[YAFFS_BLOCK_STATE_ALLOCATING] > 1)
|
|
yaffs_trace(YAFFS_TRACE_VERIFY,
|
|
"Too many allocating blocks");
|
|
|
|
for (i = 0; i < YAFFS_NUMBER_OF_BLOCK_STATES; i++)
|
|
yaffs_trace(YAFFS_TRACE_VERIFY,
|
|
"%s %d blocks",
|
|
block_state_name[i], state_count[i]);
|
|
|
|
if (dev->blocks_in_checkpt != state_count[YAFFS_BLOCK_STATE_CHECKPOINT])
|
|
yaffs_trace(YAFFS_TRACE_VERIFY,
|
|
"Checkpoint block count wrong dev %d count %d",
|
|
dev->blocks_in_checkpt,
|
|
state_count[YAFFS_BLOCK_STATE_CHECKPOINT]);
|
|
|
|
if (dev->n_erased_blocks != state_count[YAFFS_BLOCK_STATE_EMPTY])
|
|
yaffs_trace(YAFFS_TRACE_VERIFY,
|
|
"Erased block count wrong dev %d count %d",
|
|
dev->n_erased_blocks,
|
|
state_count[YAFFS_BLOCK_STATE_EMPTY]);
|
|
|
|
if (state_count[YAFFS_BLOCK_STATE_COLLECTING] > 1)
|
|
yaffs_trace(YAFFS_TRACE_VERIFY,
|
|
"Too many collecting blocks %d (max is 1)",
|
|
state_count[YAFFS_BLOCK_STATE_COLLECTING]);
|
|
}
|
|
|
|
/*
|
|
* Verify the object header. oh must be valid, but obj and tags may be NULL in
|
|
* which case those tests will not be performed.
|
|
*/
|
|
void yaffs_verify_oh(struct yaffs_obj *obj, struct yaffs_obj_hdr *oh,
|
|
struct yaffs_ext_tags *tags, int parent_check)
|
|
{
|
|
if (obj && yaffs_skip_verification(obj->my_dev))
|
|
return;
|
|
|
|
if (!(tags && obj && oh)) {
|
|
yaffs_trace(YAFFS_TRACE_VERIFY,
|
|
"Verifying object header tags %p obj %p oh %p",
|
|
tags, obj, oh);
|
|
return;
|
|
}
|
|
|
|
if (oh->type <= YAFFS_OBJECT_TYPE_UNKNOWN ||
|
|
oh->type > YAFFS_OBJECT_TYPE_MAX)
|
|
yaffs_trace(YAFFS_TRACE_VERIFY,
|
|
"Obj %d header type is illegal value 0x%x",
|
|
tags->obj_id, oh->type);
|
|
|
|
if (tags->obj_id != obj->obj_id)
|
|
yaffs_trace(YAFFS_TRACE_VERIFY,
|
|
"Obj %d header mismatch obj_id %d",
|
|
tags->obj_id, obj->obj_id);
|
|
|
|
/*
|
|
* Check that the object's parent ids match if parent_check requested.
|
|
*
|
|
* Tests do not apply to the root object.
|
|
*/
|
|
|
|
if (parent_check && tags->obj_id > 1 && !obj->parent)
|
|
yaffs_trace(YAFFS_TRACE_VERIFY,
|
|
"Obj %d header mismatch parent_id %d obj->parent is NULL",
|
|
tags->obj_id, oh->parent_obj_id);
|
|
|
|
if (parent_check && obj->parent &&
|
|
oh->parent_obj_id != obj->parent->obj_id &&
|
|
(oh->parent_obj_id != YAFFS_OBJECTID_UNLINKED ||
|
|
obj->parent->obj_id != YAFFS_OBJECTID_DELETED))
|
|
yaffs_trace(YAFFS_TRACE_VERIFY,
|
|
"Obj %d header mismatch parent_id %d parent_obj_id %d",
|
|
tags->obj_id, oh->parent_obj_id,
|
|
obj->parent->obj_id);
|
|
|
|
if (tags->obj_id > 1 && oh->name[0] == 0) /* Null name */
|
|
yaffs_trace(YAFFS_TRACE_VERIFY,
|
|
"Obj %d header name is NULL",
|
|
obj->obj_id);
|
|
|
|
if (tags->obj_id > 1 && ((u8) (oh->name[0])) == 0xff) /* Junk name */
|
|
yaffs_trace(YAFFS_TRACE_VERIFY,
|
|
"Obj %d header name is 0xff",
|
|
obj->obj_id);
|
|
}
|
|
|
|
void yaffs_verify_file(struct yaffs_obj *obj)
|
|
{
|
|
u32 x;
|
|
int required_depth;
|
|
int last_chunk;
|
|
u32 offset_in_chunk;
|
|
u32 the_chunk;
|
|
|
|
u32 i;
|
|
struct yaffs_dev *dev;
|
|
struct yaffs_ext_tags tags;
|
|
struct yaffs_tnode *tn;
|
|
u32 obj_id;
|
|
|
|
if (!obj)
|
|
return;
|
|
|
|
if (yaffs_skip_verification(obj->my_dev))
|
|
return;
|
|
|
|
dev = obj->my_dev;
|
|
obj_id = obj->obj_id;
|
|
|
|
|
|
/* Check file size is consistent with tnode depth */
|
|
yaffs_addr_to_chunk(dev, obj->variant.file_variant.file_size,
|
|
&last_chunk, &offset_in_chunk);
|
|
last_chunk++;
|
|
x = last_chunk >> YAFFS_TNODES_LEVEL0_BITS;
|
|
required_depth = 0;
|
|
while (x > 0) {
|
|
x >>= YAFFS_TNODES_INTERNAL_BITS;
|
|
required_depth++;
|
|
}
|
|
|
|
/* Check that the chunks in the tnode tree are all correct.
|
|
* We do this by scanning through the tnode tree and
|
|
* checking the tags for every chunk match.
|
|
*/
|
|
|
|
if (yaffs_skip_nand_verification(dev))
|
|
return;
|
|
|
|
for (i = 1; i <= last_chunk; i++) {
|
|
tn = yaffs_find_tnode_0(dev, &obj->variant.file_variant, i);
|
|
|
|
if (!tn)
|
|
continue;
|
|
|
|
the_chunk = yaffs_get_group_base(dev, tn, i);
|
|
if (the_chunk > 0) {
|
|
yaffs_rd_chunk_tags_nand(dev, the_chunk, NULL,
|
|
&tags);
|
|
if (tags.obj_id != obj_id || tags.chunk_id != i)
|
|
yaffs_trace(YAFFS_TRACE_VERIFY,
|
|
"Object %d chunk_id %d NAND mismatch chunk %d tags (%d:%d)",
|
|
obj_id, i, the_chunk,
|
|
tags.obj_id, tags.chunk_id);
|
|
}
|
|
}
|
|
}
|
|
|
|
void yaffs_verify_link(struct yaffs_obj *obj)
|
|
{
|
|
if (obj && yaffs_skip_verification(obj->my_dev))
|
|
return;
|
|
|
|
/* Verify sane equivalent object */
|
|
}
|
|
|
|
void yaffs_verify_symlink(struct yaffs_obj *obj)
|
|
{
|
|
if (obj && yaffs_skip_verification(obj->my_dev))
|
|
return;
|
|
|
|
/* Verify symlink string */
|
|
}
|
|
|
|
void yaffs_verify_special(struct yaffs_obj *obj)
|
|
{
|
|
if (obj && yaffs_skip_verification(obj->my_dev))
|
|
return;
|
|
}
|
|
|
|
void yaffs_verify_obj(struct yaffs_obj *obj)
|
|
{
|
|
struct yaffs_dev *dev;
|
|
u32 chunk_min;
|
|
u32 chunk_max;
|
|
u32 chunk_id_ok;
|
|
u32 chunk_in_range;
|
|
u32 chunk_wrongly_deleted;
|
|
u32 chunk_valid;
|
|
|
|
if (!obj)
|
|
return;
|
|
|
|
if (obj->being_created)
|
|
return;
|
|
|
|
dev = obj->my_dev;
|
|
|
|
if (yaffs_skip_verification(dev))
|
|
return;
|
|
|
|
/* Check sane object header chunk */
|
|
|
|
chunk_min = dev->internal_start_block * dev->param.chunks_per_block;
|
|
chunk_max =
|
|
(dev->internal_end_block + 1) * dev->param.chunks_per_block - 1;
|
|
|
|
chunk_in_range = (((unsigned)(obj->hdr_chunk)) >= chunk_min &&
|
|
((unsigned)(obj->hdr_chunk)) <= chunk_max);
|
|
chunk_id_ok = chunk_in_range || (obj->hdr_chunk == 0);
|
|
chunk_valid = chunk_in_range &&
|
|
yaffs_check_chunk_bit(dev,
|
|
obj->hdr_chunk / dev->param.chunks_per_block,
|
|
obj->hdr_chunk % dev->param.chunks_per_block);
|
|
chunk_wrongly_deleted = chunk_in_range && !chunk_valid;
|
|
|
|
if (!obj->fake && (!chunk_id_ok || chunk_wrongly_deleted))
|
|
yaffs_trace(YAFFS_TRACE_VERIFY,
|
|
"Obj %d has chunk_id %d %s %s",
|
|
obj->obj_id, obj->hdr_chunk,
|
|
chunk_id_ok ? "" : ",out of range",
|
|
chunk_wrongly_deleted ? ",marked as deleted" : "");
|
|
|
|
if (chunk_valid && !yaffs_skip_nand_verification(dev)) {
|
|
struct yaffs_ext_tags tags;
|
|
struct yaffs_obj_hdr *oh;
|
|
u8 *buffer = yaffs_get_temp_buffer(dev);
|
|
|
|
oh = (struct yaffs_obj_hdr *)buffer;
|
|
|
|
yaffs_rd_chunk_tags_nand(dev, obj->hdr_chunk, buffer, &tags);
|
|
|
|
yaffs_verify_oh(obj, oh, &tags, 1);
|
|
|
|
yaffs_release_temp_buffer(dev, buffer);
|
|
}
|
|
|
|
/* Verify it has a parent */
|
|
if (obj && !obj->fake && (!obj->parent || obj->parent->my_dev != dev)) {
|
|
yaffs_trace(YAFFS_TRACE_VERIFY,
|
|
"Obj %d has parent pointer %p which does not look like an object",
|
|
obj->obj_id, obj->parent);
|
|
}
|
|
|
|
/* Verify parent is a directory */
|
|
if (obj->parent &&
|
|
obj->parent->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) {
|
|
yaffs_trace(YAFFS_TRACE_VERIFY,
|
|
"Obj %d's parent is not a directory (type %d)",
|
|
obj->obj_id, obj->parent->variant_type);
|
|
}
|
|
|
|
switch (obj->variant_type) {
|
|
case YAFFS_OBJECT_TYPE_FILE:
|
|
yaffs_verify_file(obj);
|
|
break;
|
|
case YAFFS_OBJECT_TYPE_SYMLINK:
|
|
yaffs_verify_symlink(obj);
|
|
break;
|
|
case YAFFS_OBJECT_TYPE_DIRECTORY:
|
|
yaffs_verify_dir(obj);
|
|
break;
|
|
case YAFFS_OBJECT_TYPE_HARDLINK:
|
|
yaffs_verify_link(obj);
|
|
break;
|
|
case YAFFS_OBJECT_TYPE_SPECIAL:
|
|
yaffs_verify_special(obj);
|
|
break;
|
|
case YAFFS_OBJECT_TYPE_UNKNOWN:
|
|
default:
|
|
yaffs_trace(YAFFS_TRACE_VERIFY,
|
|
"Obj %d has illegaltype %d",
|
|
obj->obj_id, obj->variant_type);
|
|
break;
|
|
}
|
|
}
|
|
|
|
void yaffs_verify_objects(struct yaffs_dev *dev)
|
|
{
|
|
struct yaffs_obj *obj;
|
|
int i;
|
|
struct list_head *lh;
|
|
|
|
if (yaffs_skip_verification(dev))
|
|
return;
|
|
|
|
/* Iterate through the objects in each hash entry */
|
|
|
|
for (i = 0; i < YAFFS_NOBJECT_BUCKETS; i++) {
|
|
list_for_each(lh, &dev->obj_bucket[i].list) {
|
|
obj = list_entry(lh, struct yaffs_obj, hash_link);
|
|
yaffs_verify_obj(obj);
|
|
}
|
|
}
|
|
}
|
|
|
|
void yaffs_verify_obj_in_dir(struct yaffs_obj *obj)
|
|
{
|
|
struct list_head *lh;
|
|
struct yaffs_obj *list_obj;
|
|
int count = 0;
|
|
|
|
if (!obj) {
|
|
yaffs_trace(YAFFS_TRACE_ALWAYS, "No object to verify");
|
|
BUG();
|
|
return;
|
|
}
|
|
|
|
if (yaffs_skip_verification(obj->my_dev))
|
|
return;
|
|
|
|
if (!obj->parent) {
|
|
yaffs_trace(YAFFS_TRACE_ALWAYS, "Object does not have parent");
|
|
BUG();
|
|
return;
|
|
}
|
|
|
|
if (obj->parent->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) {
|
|
yaffs_trace(YAFFS_TRACE_ALWAYS, "Parent is not directory");
|
|
BUG();
|
|
}
|
|
|
|
/* Iterate through the objects in each hash entry */
|
|
|
|
list_for_each(lh, &obj->parent->variant.dir_variant.children) {
|
|
list_obj = list_entry(lh, struct yaffs_obj, siblings);
|
|
yaffs_verify_obj(list_obj);
|
|
if (obj == list_obj)
|
|
count++;
|
|
}
|
|
|
|
if (count != 1) {
|
|
yaffs_trace(YAFFS_TRACE_ALWAYS,
|
|
"Object in directory %d times",
|
|
count);
|
|
BUG();
|
|
}
|
|
}
|
|
|
|
void yaffs_verify_dir(struct yaffs_obj *directory)
|
|
{
|
|
struct list_head *lh;
|
|
struct yaffs_obj *list_obj;
|
|
|
|
if (!directory) {
|
|
BUG();
|
|
return;
|
|
}
|
|
|
|
if (yaffs_skip_full_verification(directory->my_dev))
|
|
return;
|
|
|
|
if (directory->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) {
|
|
yaffs_trace(YAFFS_TRACE_ALWAYS,
|
|
"Directory has wrong type: %d",
|
|
directory->variant_type);
|
|
BUG();
|
|
}
|
|
|
|
/* Iterate through the objects in each hash entry */
|
|
|
|
list_for_each(lh, &directory->variant.dir_variant.children) {
|
|
list_obj = list_entry(lh, struct yaffs_obj, siblings);
|
|
if (list_obj->parent != directory) {
|
|
yaffs_trace(YAFFS_TRACE_ALWAYS,
|
|
"Object in directory list has wrong parent %p",
|
|
list_obj->parent);
|
|
BUG();
|
|
}
|
|
yaffs_verify_obj_in_dir(list_obj);
|
|
}
|
|
}
|
|
|
|
static int yaffs_free_verification_failures;
|
|
|
|
void yaffs_verify_free_chunks(struct yaffs_dev *dev)
|
|
{
|
|
int counted;
|
|
int difference;
|
|
|
|
if (yaffs_skip_verification(dev))
|
|
return;
|
|
|
|
counted = yaffs_count_free_chunks(dev);
|
|
|
|
difference = dev->n_free_chunks - counted;
|
|
|
|
if (difference) {
|
|
yaffs_trace(YAFFS_TRACE_ALWAYS,
|
|
"Freechunks verification failure %d %d %d",
|
|
dev->n_free_chunks, counted, difference);
|
|
yaffs_free_verification_failures++;
|
|
}
|
|
}
|
|
|
|
int yaffs_verify_file_sane(struct yaffs_obj *in)
|
|
{
|
|
return YAFFS_OK;
|
|
}
|