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TP-Link_Archer-XR500v/EN7526G_3.18Kernel_SDK/tools/mtd-utils-1.4.5/sumtool.c
Matheus Sampaio Queiroga aaca98136a
Add gpl
2024-07-22 01:58:46 -03:00

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/*
* sumtool.c
*
* Copyright (C) 2004 Zoltan Sogor <weth@inf.u-szeged.hu>,
* Ferenc Havasi <havasi@inf.u-szeged.hu>
* University of Szeged, Hungary
* 2006 KaiGai Kohei <kaigai@ak.jp.nec.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* Overview:
* This is a utility insert summary information into JFFS2 image for
* faster mount time
*
*/
#define PROGRAM_NAME "sumtool"
#include <errno.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <time.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/param.h>
#include <asm/types.h>
#include <dirent.h>
#include <mtd/jffs2-user.h>
#include <endian.h>
#include <byteswap.h>
#include <getopt.h>
#include <crc32.h>
#include "summary.h"
#include "common.h"
#define PAD(x) (((x)+3)&~3)
static struct jffs2_summary *sum_collected = NULL;
static int verbose = 0;
static int padto = 0; /* pad the output with 0xFF to the end of the final eraseblock */
static int add_cleanmarkers = 1; /* add cleanmarker to output */
static int use_input_cleanmarker_size = 1; /* use input file's cleanmarker size (default) */
static int found_cleanmarkers = 0; /* cleanmarker found in input file */
static struct jffs2_unknown_node cleanmarker;
static int cleanmarker_size = sizeof(cleanmarker);
static const char *short_options = "o:i:e:hvVblnc:p";
static int erase_block_size = 65536;
static int out_fd = -1;
static int in_fd = -1;
static uint8_t *data_buffer = NULL; /* buffer for inodes */
static unsigned int data_ofs = 0; /* inode buffer offset */
static uint8_t *file_buffer = NULL; /* file buffer contains the actual erase block*/
static unsigned int file_ofs = 0; /* position in the buffer */
int target_endian = __BYTE_ORDER;
static struct option long_options[] = {
{"output", 1, NULL, 'o'},
{"input", 1, NULL, 'i'},
{"eraseblock", 1, NULL, 'e'},
{"help", 0, NULL, 'h'},
{"verbose", 0, NULL, 'v'},
{"version", 0, NULL, 'V'},
{"bigendian", 0, NULL, 'b'},
{"littleendian", 0, NULL, 'l'},
{"no-cleanmarkers", 0, NULL, 'n'},
{"cleanmarker", 1, NULL, 'c'},
{"pad", 0, NULL, 'p'},
{NULL, 0, NULL, 0}
};
static const char helptext[] =
"Usage: sumtool [OPTIONS] -i inputfile -o outputfile\n\n"
"Convert the input JFFS2 image to a summarized JFFS2 image\n"
"Summary makes mounting faster - if summary support enabled in your kernel\n\n"
"Options:\n"
" -e, --eraseblock=SIZE Use erase block size SIZE (default: 64KiB)\n"
" (usually 16KiB on NAND)\n"
" -c, --cleanmarker=SIZE Size of cleanmarker (default 12).\n"
" (usually 16 bytes on NAND, and will be set to\n"
" this value if left at the default 12). Will be\n"
" stored in OOB after each physical page composing\n"
" a physical eraseblock.\n"
" -n, --no-cleanmarkers Don't add a cleanmarker to every eraseblock\n"
" -o, --output=FILE Output to FILE \n"
" -i, --input=FILE Input from FILE \n"
" -b, --bigendian Image is big endian\n"
" -l --littleendian Image is little endian\n"
" -h, --help Display this help text\n"
" -v, --verbose Verbose operation\n"
" -V, --version Display version information\n"
" -p, --pad Pad the OUTPUT with 0xFF to the end of the final\n"
" eraseblock\n\n";
static const char revtext[] = "$Revision: 1.9 $";
static unsigned char ffbuf[16] = {
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
};
static void full_write(void *target_buff, const void *buf, int len);
void setup_cleanmarker(void)
{
cleanmarker.magic = cpu_to_je16(JFFS2_MAGIC_BITMASK);
cleanmarker.nodetype = cpu_to_je16(JFFS2_NODETYPE_CLEANMARKER);
cleanmarker.totlen = cpu_to_je32(cleanmarker_size);
cleanmarker.hdr_crc = cpu_to_je32(mtd_crc32(0, &cleanmarker, sizeof(struct jffs2_unknown_node)-4));
}
void process_options (int argc, char **argv)
{
int opt,c;
while ((opt = getopt_long(argc, argv, short_options, long_options, &c)) >= 0) {
switch (opt) {
case 'o':
if (out_fd != -1)
errmsg_die("output filename specified more than once");
out_fd = open(optarg, O_CREAT | O_TRUNC | O_RDWR, 0644);
if (out_fd == -1)
sys_errmsg_die("open output file");
break;
case 'i':
if (in_fd != -1)
errmsg_die("input filename specified more than once");
in_fd = open(optarg, O_RDONLY);
if (in_fd == -1)
sys_errmsg_die("open input file");
break;
case 'b':
target_endian = __BIG_ENDIAN;
break;
case 'l':
target_endian = __LITTLE_ENDIAN;
break;
case 'h':
case '?':
errmsg_die("%s", helptext);
case 'v':
verbose = 1;
break;
case 'V':
errmsg_die("revision %.*s\n",
(int) strlen(revtext) - 13, revtext + 11);
case 'e': {
char *next;
unsigned units = 0;
erase_block_size = strtol(optarg, &next, 0);
if (!erase_block_size)
errmsg_die("Unrecognisable erase size\n");
if (*next) {
if (!strcmp(next, "KiB")) {
units = 1024;
} else if (!strcmp(next, "MiB")) {
units = 1024 * 1024;
} else {
errmsg_die("Unknown units in erasesize\n");
}
} else {
if (erase_block_size < 0x1000)
units = 1024;
else
units = 1;
}
erase_block_size *= units;
/* If it's less than 8KiB, they're not allowed */
if (erase_block_size < 0x2000) {
warnmsg("Erase size 0x%x too small. Increasing to 8KiB minimum\n",
erase_block_size);
erase_block_size = 0x2000;
}
break;
}
case 'n':
add_cleanmarkers = 0;
break;
case 'c':
cleanmarker_size = strtol(optarg, NULL, 0);
if (cleanmarker_size < sizeof(cleanmarker)) {
errmsg_die("cleanmarker size must be >= 12");
}
if (cleanmarker_size >= erase_block_size) {
errmsg_die("cleanmarker size must be < eraseblock size");
}
use_input_cleanmarker_size = 0;
found_cleanmarkers = 1;
setup_cleanmarker();
break;
case 'p':
padto = 1;
break;
}
}
}
void init_buffers(void)
{
data_buffer = xmalloc(erase_block_size);
file_buffer = xmalloc(erase_block_size);
}
void init_sumlist(void)
{
sum_collected = xzalloc(sizeof(*sum_collected));
}
void clean_buffers(void)
{
free(data_buffer);
free(file_buffer);
}
void clean_sumlist(void)
{
union jffs2_sum_mem *temp;
if (sum_collected) {
while (sum_collected->sum_list_head) {
temp = sum_collected->sum_list_head;
sum_collected->sum_list_head = sum_collected->sum_list_head->u.next;
free(temp);
sum_collected->sum_num--;
}
if (sum_collected->sum_num != 0)
warnmsg("Ooops, something wrong happened! sum_num != 0, but sum_list = null ???");
free(sum_collected);
}
}
int load_next_block(void)
{
int ret;
ret = read(in_fd, file_buffer, erase_block_size);
file_ofs = 0;
bareverbose(verbose, "Load next block : %d bytes read\n", ret);
return ret;
}
void write_buff_to_file(void)
{
int ret;
int len = data_ofs;
uint8_t *buf = NULL;
buf = data_buffer;
while (len > 0) {
ret = write(out_fd, buf, len);
if (ret < 0)
sys_errmsg_die("write");
if (ret == 0)
sys_errmsg_die("write returned zero");
len -= ret;
buf += ret;
}
data_ofs = 0;
}
void dump_sum_records(void)
{
struct jffs2_raw_summary isum;
struct jffs2_sum_marker *sm;
union jffs2_sum_mem *temp;
jint32_t offset;
jint32_t *tpage;
void *wpage;
int datasize, infosize, padsize;
jint32_t magic = cpu_to_je32(JFFS2_SUM_MAGIC);
if (!sum_collected->sum_num || !sum_collected->sum_list_head)
return;
datasize = sum_collected->sum_size + sizeof(struct jffs2_sum_marker);
infosize = sizeof(struct jffs2_raw_summary) + datasize;
padsize = erase_block_size - data_ofs - infosize;
infosize += padsize; datasize += padsize;
offset = cpu_to_je32(data_ofs);
tpage = xmalloc(datasize);
memset(tpage, 0xff, datasize);
memset(&isum, 0, sizeof(isum));
isum.magic = cpu_to_je16(JFFS2_MAGIC_BITMASK);
isum.nodetype = cpu_to_je16(JFFS2_NODETYPE_SUMMARY);
isum.totlen = cpu_to_je32(infosize);
isum.hdr_crc = cpu_to_je32(mtd_crc32(0, &isum, sizeof(struct jffs2_unknown_node) - 4));
isum.padded = cpu_to_je32(0);
if (add_cleanmarkers && found_cleanmarkers) {
isum.cln_mkr = cpu_to_je32(cleanmarker_size);
} else {
isum.cln_mkr = cpu_to_je32(0);
}
isum.sum_num = cpu_to_je32(sum_collected->sum_num);
wpage = tpage;
while (sum_collected->sum_num) {
switch(je16_to_cpu(sum_collected->sum_list_head->u.nodetype)) {
case JFFS2_NODETYPE_INODE : {
struct jffs2_sum_inode_flash *sino_ptr = wpage;
sino_ptr->nodetype = sum_collected->sum_list_head->i.nodetype;
sino_ptr->inode = sum_collected->sum_list_head->i.inode;
sino_ptr->version = sum_collected->sum_list_head->i.version;
sino_ptr->offset = sum_collected->sum_list_head->i.offset;
sino_ptr->totlen = sum_collected->sum_list_head->i.totlen;
wpage += JFFS2_SUMMARY_INODE_SIZE;
break;
}
case JFFS2_NODETYPE_DIRENT : {
struct jffs2_sum_dirent_flash *sdrnt_ptr = wpage;
sdrnt_ptr->nodetype = sum_collected->sum_list_head->d.nodetype;
sdrnt_ptr->totlen = sum_collected->sum_list_head->d.totlen;
sdrnt_ptr->offset = sum_collected->sum_list_head->d.offset;
sdrnt_ptr->pino = sum_collected->sum_list_head->d.pino;
sdrnt_ptr->version = sum_collected->sum_list_head->d.version;
sdrnt_ptr->ino = sum_collected->sum_list_head->d.ino;
sdrnt_ptr->nsize = sum_collected->sum_list_head->d.nsize;
sdrnt_ptr->type = sum_collected->sum_list_head->d.type;
memcpy(sdrnt_ptr->name, sum_collected->sum_list_head->d.name,
sum_collected->sum_list_head->d.nsize);
wpage += JFFS2_SUMMARY_DIRENT_SIZE(sum_collected->sum_list_head->d.nsize);
break;
}
case JFFS2_NODETYPE_XATTR: {
struct jffs2_sum_xattr_flash *sxattr_ptr = wpage;
sxattr_ptr->nodetype = sum_collected->sum_list_head->x.nodetype;
sxattr_ptr->xid = sum_collected->sum_list_head->x.xid;
sxattr_ptr->version = sum_collected->sum_list_head->x.version;
sxattr_ptr->offset = sum_collected->sum_list_head->x.offset;
sxattr_ptr->totlen = sum_collected->sum_list_head->x.totlen;
wpage += JFFS2_SUMMARY_XATTR_SIZE;
break;
}
case JFFS2_NODETYPE_XREF: {
struct jffs2_sum_xref_flash *sxref_ptr = wpage;
sxref_ptr->nodetype = sum_collected->sum_list_head->r.nodetype;
sxref_ptr->offset = sum_collected->sum_list_head->r.offset;
wpage += JFFS2_SUMMARY_XREF_SIZE;
break;
}
default : {
warnmsg("Unknown node type!\n");
}
}
temp = sum_collected->sum_list_head;
sum_collected->sum_list_head = sum_collected->sum_list_head->u.next;
free(temp);
sum_collected->sum_num--;
}
sum_collected->sum_size = 0;
sum_collected->sum_num = 0;
sum_collected->sum_list_tail = NULL;
wpage += padsize;
sm = wpage;
sm->offset = offset;
sm->magic = magic;
isum.sum_crc = cpu_to_je32(mtd_crc32(0, tpage, datasize));
isum.node_crc = cpu_to_je32(mtd_crc32(0, &isum, sizeof(isum) - 8));
full_write(data_buffer + data_ofs, &isum, sizeof(isum));
full_write(data_buffer + data_ofs, tpage, datasize);
free(tpage);
}
static void full_write(void *target_buff, const void *buf, int len)
{
memcpy(target_buff, buf, len);
data_ofs += len;
}
static void pad(int req)
{
while (req) {
if (req > sizeof(ffbuf)) {
full_write(data_buffer + data_ofs, ffbuf, sizeof(ffbuf));
req -= sizeof(ffbuf);
} else {
full_write(data_buffer + data_ofs, ffbuf, req);
req = 0;
}
}
}
static inline void padword(void)
{
if (data_ofs % 4)
full_write(data_buffer + data_ofs, ffbuf, 4 - (data_ofs % 4));
}
static inline void pad_block_if_less_than(int req,int plus)
{
int datasize = req + plus + sum_collected->sum_size + sizeof(struct jffs2_raw_summary) + 8;
datasize += (4 - (datasize % 4)) % 4;
if (data_ofs + req > erase_block_size - datasize) {
dump_sum_records();
write_buff_to_file();
}
if (add_cleanmarkers && found_cleanmarkers) {
if (!data_ofs) {
full_write(data_buffer, &cleanmarker, sizeof(cleanmarker));
pad(cleanmarker_size - sizeof(cleanmarker));
padword();
}
}
}
void flush_buffers(void)
{
if ((add_cleanmarkers == 1) && (found_cleanmarkers == 1)) { /* CLEANMARKER */
if (data_ofs != cleanmarker_size) { /* INODE BUFFER */
int datasize = sum_collected->sum_size + sizeof(struct jffs2_raw_summary) + 8;
datasize += (4 - (datasize % 4)) % 4;
/* If we have a full inode buffer, then write out inode and summary data */
if (data_ofs + sizeof(struct jffs2_raw_inode) + 2*JFFS2_MIN_DATA_LEN > erase_block_size - datasize) {
dump_sum_records();
write_buff_to_file();
} else { /* else just write out inode data */
if (padto)
pad(erase_block_size - data_ofs);
write_buff_to_file();
}
}
} else { /* NO CLEANMARKER */
if (data_ofs != 0) { /* INODE BUFFER */
int datasize = sum_collected->sum_size + sizeof(struct jffs2_raw_summary) + 8;
datasize += (4 - (datasize % 4)) % 4;
/* If we have a full inode buffer, then write out inode and summary data */
if (data_ofs + sizeof(struct jffs2_raw_inode) + 2*JFFS2_MIN_DATA_LEN > erase_block_size - datasize) {
dump_sum_records();
write_buff_to_file();
} else { /* Else just write out inode data */
if(padto)
pad(erase_block_size - data_ofs);
write_buff_to_file();
}
}
}
}
int add_sum_mem(union jffs2_sum_mem *item)
{
if (!sum_collected->sum_list_head)
sum_collected->sum_list_head = (union jffs2_sum_mem *) item;
if (sum_collected->sum_list_tail)
sum_collected->sum_list_tail->u.next = (union jffs2_sum_mem *) item;
sum_collected->sum_list_tail = (union jffs2_sum_mem *) item;
switch (je16_to_cpu(item->u.nodetype)) {
case JFFS2_NODETYPE_INODE:
sum_collected->sum_size += JFFS2_SUMMARY_INODE_SIZE;
sum_collected->sum_num++;
break;
case JFFS2_NODETYPE_DIRENT:
sum_collected->sum_size += JFFS2_SUMMARY_DIRENT_SIZE(item->d.nsize);
sum_collected->sum_num++;
break;
case JFFS2_NODETYPE_XATTR:
sum_collected->sum_size += JFFS2_SUMMARY_XATTR_SIZE;
sum_collected->sum_num++;
break;
case JFFS2_NODETYPE_XREF:
sum_collected->sum_size += JFFS2_SUMMARY_XREF_SIZE;
sum_collected->sum_num++;
break;
default:
errmsg_die("__jffs2_add_sum_mem(): UNKNOWN node type %d\n", je16_to_cpu(item->u.nodetype));
}
return 0;
}
void add_sum_inode_mem(union jffs2_node_union *node)
{
struct jffs2_sum_inode_mem *temp = xmalloc(sizeof(*temp));
temp->nodetype = node->i.nodetype;
temp->inode = node->i.ino;
temp->version = node->i.version;
temp->offset = cpu_to_je32(data_ofs);
temp->totlen = node->i.totlen;
temp->next = NULL;
add_sum_mem((union jffs2_sum_mem *) temp);
}
void add_sum_dirent_mem(union jffs2_node_union *node)
{
struct jffs2_sum_dirent_mem *temp = xmalloc(sizeof(*temp) + node->d.nsize);
temp->nodetype = node->d.nodetype;
temp->totlen = node->d.totlen;
temp->offset = cpu_to_je32(data_ofs);
temp->pino = node->d.pino;
temp->version = node->d.version;
temp->ino = node->d.ino;
temp->nsize = node->d.nsize;
temp->type = node->d.type;
temp->next = NULL;
memcpy(temp->name,node->d.name,node->d.nsize);
add_sum_mem((union jffs2_sum_mem *) temp);
}
void add_sum_xattr_mem(union jffs2_node_union *node)
{
struct jffs2_sum_xattr_mem *temp = xmalloc(sizeof(*temp));
temp->nodetype = node->x.nodetype;
temp->xid = node->x.xid;
temp->version = node->x.version;
temp->offset = cpu_to_je32(data_ofs);
temp->totlen = node->x.totlen;
temp->next = NULL;
add_sum_mem((union jffs2_sum_mem *) temp);
}
void add_sum_xref_mem(union jffs2_node_union *node)
{
struct jffs2_sum_xref_mem *temp = xmalloc(sizeof(*temp));
temp->nodetype = node->r.nodetype;
temp->offset = cpu_to_je32(data_ofs);
temp->next = NULL;
add_sum_mem((union jffs2_sum_mem *) temp);
}
void write_dirent_to_buff(union jffs2_node_union *node)
{
pad_block_if_less_than(je32_to_cpu (node->d.totlen),JFFS2_SUMMARY_DIRENT_SIZE(node->d.nsize));
add_sum_dirent_mem(node);
full_write(data_buffer + data_ofs, &(node->d), je32_to_cpu (node->d.totlen));
padword();
}
void write_inode_to_buff(union jffs2_node_union *node)
{
pad_block_if_less_than(je32_to_cpu (node->i.totlen),JFFS2_SUMMARY_INODE_SIZE);
add_sum_inode_mem(node); /* Add inode summary mem to summary list */
full_write(data_buffer + data_ofs, &(node->i), je32_to_cpu (node->i.totlen)); /* Write out the inode to inode_buffer */
padword();
}
void write_xattr_to_buff(union jffs2_node_union *node)
{
pad_block_if_less_than(je32_to_cpu(node->x.totlen), JFFS2_SUMMARY_XATTR_SIZE);
add_sum_xattr_mem(node); /* Add xdatum summary mem to summary list */
full_write(data_buffer + data_ofs, &(node->x), je32_to_cpu(node->x.totlen));
padword();
}
void write_xref_to_buff(union jffs2_node_union *node)
{
pad_block_if_less_than(je32_to_cpu(node->r.totlen), JFFS2_SUMMARY_XREF_SIZE);
add_sum_xref_mem(node); /* Add xref summary mem to summary list */
full_write(data_buffer + data_ofs, &(node->r), je32_to_cpu(node->r.totlen));
padword();
}
void create_summed_image(int inp_size)
{
uint8_t *p = file_buffer;
union jffs2_node_union *node;
uint32_t crc, length;
uint16_t type;
int bitchbitmask = 0;
int obsolete;
char name[256];
while ( p < (file_buffer + inp_size)) {
node = (union jffs2_node_union *) p;
/* Skip empty space */
if (je16_to_cpu (node->u.magic) == 0xFFFF && je16_to_cpu (node->u.nodetype) == 0xFFFF) {
p += 4;
continue;
}
if (je16_to_cpu (node->u.magic) != JFFS2_MAGIC_BITMASK) {
if (!bitchbitmask++)
warnmsg("Wrong bitmask at 0x%08zx, 0x%04x\n",
p - file_buffer, je16_to_cpu (node->u.magic));
p += 4;
continue;
}
bitchbitmask = 0;
type = je16_to_cpu(node->u.nodetype);
if ((type & JFFS2_NODE_ACCURATE) != JFFS2_NODE_ACCURATE) {
obsolete = 1;
type |= JFFS2_NODE_ACCURATE;
} else {
obsolete = 0;
}
node->u.nodetype = cpu_to_je16(type);
crc = mtd_crc32 (0, node, sizeof (struct jffs2_unknown_node) - 4);
if (crc != je32_to_cpu (node->u.hdr_crc)) {
warnmsg("Wrong hdr_crc at 0x%08zx, 0x%08x instead of 0x%08x\n",
p - file_buffer, je32_to_cpu (node->u.hdr_crc), crc);
p += 4;
continue;
}
switch(je16_to_cpu(node->u.nodetype)) {
case JFFS2_NODETYPE_INODE:
bareverbose(verbose,
"%8s Inode node at 0x%08zx, totlen 0x%08x, #ino %5d, version %5d, isize %8d, csize %8d, dsize %8d, offset %8d\n",
obsolete ? "Obsolete" : "",
p - file_buffer, je32_to_cpu (node->i.totlen), je32_to_cpu (node->i.ino),
je32_to_cpu (node->i.version), je32_to_cpu (node->i.isize),
je32_to_cpu (node->i.csize), je32_to_cpu (node->i.dsize), je32_to_cpu (node->i.offset));
crc = mtd_crc32 (0, node, sizeof (struct jffs2_raw_inode) - 8);
if (crc != je32_to_cpu (node->i.node_crc)) {
warnmsg("Wrong node_crc at 0x%08zx, 0x%08x instead of 0x%08x\n",
p - file_buffer, je32_to_cpu (node->i.node_crc), crc);
p += PAD(je32_to_cpu (node->i.totlen));
continue;
}
crc = mtd_crc32(0, p + sizeof (struct jffs2_raw_inode), je32_to_cpu(node->i.csize));
if (crc != je32_to_cpu(node->i.data_crc)) {
warnmsg("Wrong data_crc at 0x%08zx, 0x%08x instead of 0x%08x\n",
p - file_buffer, je32_to_cpu (node->i.data_crc), crc);
p += PAD(je32_to_cpu (node->i.totlen));
continue;
}
write_inode_to_buff(node);
p += PAD(je32_to_cpu (node->i.totlen));
break;
case JFFS2_NODETYPE_DIRENT:
memcpy (name, node->d.name, node->d.nsize);
name [node->d.nsize] = 0x0;
bareverbose(verbose,
"%8s Dirent node at 0x%08zx, totlen 0x%08x, #pino %5d, version %5d, #ino %8d, nsize %8d, name %s\n",
obsolete ? "Obsolete" : "",
p - file_buffer, je32_to_cpu (node->d.totlen), je32_to_cpu (node->d.pino),
je32_to_cpu (node->d.version), je32_to_cpu (node->d.ino),
node->d.nsize, name);
crc = mtd_crc32 (0, node, sizeof (struct jffs2_raw_dirent) - 8);
if (crc != je32_to_cpu (node->d.node_crc)) {
warnmsg("Wrong node_crc at 0x%08zx, 0x%08x instead of 0x%08x\n",
p - file_buffer, je32_to_cpu (node->d.node_crc), crc);
p += PAD(je32_to_cpu (node->d.totlen));
continue;
}
crc = mtd_crc32(0, p + sizeof (struct jffs2_raw_dirent), node->d.nsize);
if (crc != je32_to_cpu(node->d.name_crc)) {
warnmsg("Wrong name_crc at 0x%08zx, 0x%08x instead of 0x%08x\n",
p - file_buffer, je32_to_cpu (node->d.name_crc), crc);
p += PAD(je32_to_cpu (node->d.totlen));
continue;
}
write_dirent_to_buff(node);
p += PAD(je32_to_cpu (node->d.totlen));
break;
case JFFS2_NODETYPE_XATTR:
if (je32_to_cpu(node->x.node_crc) == 0xffffffff)
obsolete = 1;
bareverbose(verbose,
"%8s Xdatum node at 0x%08zx, totlen 0x%08x, #xid %5u, version %5u\n",
obsolete ? "Obsolete" : "",
p - file_buffer, je32_to_cpu (node->x.totlen),
je32_to_cpu(node->x.xid), je32_to_cpu(node->x.version));
crc = mtd_crc32(0, node, sizeof (struct jffs2_raw_xattr) - 4);
if (crc != je32_to_cpu(node->x.node_crc)) {
warnmsg("Wrong node_crc at 0x%08zx, 0x%08x instead of 0x%08x\n",
p - file_buffer, je32_to_cpu(node->x.node_crc), crc);
p += PAD(je32_to_cpu (node->x.totlen));
continue;
}
length = node->x.name_len + 1 + je16_to_cpu(node->x.value_len);
crc = mtd_crc32(0, node->x.data, length);
if (crc != je32_to_cpu(node->x.data_crc)) {
warnmsg("Wrong data_crc at 0x%08zx, 0x%08x instead of 0x%08x\n",
p - file_buffer, je32_to_cpu(node->x.data_crc), crc);
p += PAD(je32_to_cpu (node->x.totlen));
continue;
}
write_xattr_to_buff(node);
p += PAD(je32_to_cpu (node->x.totlen));
break;
case JFFS2_NODETYPE_XREF:
if (je32_to_cpu(node->r.node_crc) == 0xffffffff)
obsolete = 1;
bareverbose(verbose,
"%8s Xref node at 0x%08zx, totlen 0x%08x, #ino %5u, xid %5u\n",
obsolete ? "Obsolete" : "",
p - file_buffer, je32_to_cpu(node->r.totlen),
je32_to_cpu(node->r.ino), je32_to_cpu(node->r.xid));
crc = mtd_crc32(0, node, sizeof (struct jffs2_raw_xref) - 4);
if (crc != je32_to_cpu(node->r.node_crc)) {
warnmsg("Wrong node_crc at 0x%08zx, 0x%08x instead of 0x%08x\n",
p - file_buffer, je32_to_cpu(node->r.node_crc), crc);
p += PAD(je32_to_cpu (node->r.totlen));
continue;
}
write_xref_to_buff(node);
p += PAD(je32_to_cpu (node->r.totlen));
break;
case JFFS2_NODETYPE_CLEANMARKER:
bareverbose(verbose,
"%8s Cleanmarker at 0x%08zx, totlen 0x%08x\n",
obsolete ? "Obsolete" : "",
p - file_buffer, je32_to_cpu (node->u.totlen));
if (!found_cleanmarkers) {
found_cleanmarkers = 1;
if (add_cleanmarkers == 1 && use_input_cleanmarker_size == 1){
cleanmarker_size = je32_to_cpu (node->u.totlen);
setup_cleanmarker();
}
}
p += PAD(je32_to_cpu (node->u.totlen));
break;
case JFFS2_NODETYPE_PADDING:
bareverbose(verbose,
"%8s Padding node at 0x%08zx, totlen 0x%08x\n",
obsolete ? "Obsolete" : "",
p - file_buffer, je32_to_cpu (node->u.totlen));
p += PAD(je32_to_cpu (node->u.totlen));
break;
case 0xffff:
p += 4;
break;
default:
bareverbose(verbose,
"%8s Unknown node at 0x%08zx, totlen 0x%08x\n",
obsolete ? "Obsolete" : "",
p - file_buffer, je32_to_cpu (node->u.totlen));
p += PAD(je32_to_cpu (node->u.totlen));
}
}
}
int main(int argc, char **argv)
{
int ret;
process_options(argc,argv);
if ((in_fd == -1) || (out_fd == -1)) {
if(in_fd != -1)
close(in_fd);
if(out_fd != -1)
close(out_fd);
fprintf(stderr, "%s", helptext);
errmsg_die("You must specify input and output files!\n");
}
init_buffers();
init_sumlist();
while ((ret = load_next_block())) {
create_summed_image(ret);
}
flush_buffers();
clean_buffers();
clean_sumlist();
if (in_fd != -1)
close(in_fd);
if (out_fd != -1)
close(out_fd);
return 0;
}
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