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cleanup mtd, implement jffs2write - one step closer to config preserving system upgrades

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git-svn-id: svn://svn.openwrt.org/openwrt/trunk@8444 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
nbd 2007-08-20 16:12:24 +00:00
parent 4f8894887d
commit c52dd373c6
8 changed files with 810 additions and 135 deletions
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2
package/mtd/Makefile
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@ -10,7 +10,7 @@ include $(TOPDIR)/rules.mk
include $(INCLUDE_DIR)/kernel.mk
PKG_NAME:=mtd
PKG_RELEASE:=5
PKG_RELEASE:=6
PKG_BUILD_DIR := $(KERNEL_BUILD_DIR)/$(PKG_NAME)

14
package/mtd/src/Makefile
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@ -1,12 +1,6 @@
# $Id$
all: mtd
%.o: %.c
$(CC) -I. $(CFLAGS) $(EXTRA_CFLAGS) -c -o $@ $^
mtd: mtd.o
$(CC) -o $@ $^
CC = gcc
CFLAGS += -Wall
mtd: mtd.o jffs2.o crc32.o
clean:
rm -f *.o mtd
rm -f *.o jffs2

95
package/mtd/src/crc32.c Normal file
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@ -0,0 +1,95 @@
/*
* COPYRIGHT (C) 1986 Gary S. Brown. You may use this program, or
* code or tables extracted from it, as desired without restriction.
*
* First, the polynomial itself and its table of feedback terms. The
* polynomial is
* X^32+X^26+X^23+X^22+X^16+X^12+X^11+X^10+X^8+X^7+X^5+X^4+X^2+X^1+X^0
*
* Note that we take it "backwards" and put the highest-order term in
* the lowest-order bit. The X^32 term is "implied"; the LSB is the
* X^31 term, etc. The X^0 term (usually shown as "+1") results in
* the MSB being 1
*
* Note that the usual hardware shift register implementation, which
* is what we're using (we're merely optimizing it by doing eight-bit
* chunks at a time) shifts bits into the lowest-order term. In our
* implementation, that means shifting towards the right. Why do we
* do it this way? Because the calculated CRC must be transmitted in
* order from highest-order term to lowest-order term. UARTs transmit
* characters in order from LSB to MSB. By storing the CRC this way
* we hand it to the UART in the order low-byte to high-byte; the UART
* sends each low-bit to hight-bit; and the result is transmission bit
* by bit from highest- to lowest-order term without requiring any bit
* shuffling on our part. Reception works similarly
*
* The feedback terms table consists of 256, 32-bit entries. Notes
*
* The table can be generated at runtime if desired; code to do so
* is shown later. It might not be obvious, but the feedback
* terms simply represent the results of eight shift/xor opera
* tions for all combinations of data and CRC register values
*
* The values must be right-shifted by eight bits by the "updcrc
* logic; the shift must be unsigned (bring in zeroes). On some
* hardware you could probably optimize the shift in assembler by
* using byte-swap instructions
* polynomial $edb88320
*/
#include <stdint.h>
const uint32_t crc32_table[256] = {
0x00000000L, 0x77073096L, 0xee0e612cL, 0x990951baL, 0x076dc419L,
0x706af48fL, 0xe963a535L, 0x9e6495a3L, 0x0edb8832L, 0x79dcb8a4L,
0xe0d5e91eL, 0x97d2d988L, 0x09b64c2bL, 0x7eb17cbdL, 0xe7b82d07L,
0x90bf1d91L, 0x1db71064L, 0x6ab020f2L, 0xf3b97148L, 0x84be41deL,
0x1adad47dL, 0x6ddde4ebL, 0xf4d4b551L, 0x83d385c7L, 0x136c9856L,
0x646ba8c0L, 0xfd62f97aL, 0x8a65c9ecL, 0x14015c4fL, 0x63066cd9L,
0xfa0f3d63L, 0x8d080df5L, 0x3b6e20c8L, 0x4c69105eL, 0xd56041e4L,
0xa2677172L, 0x3c03e4d1L, 0x4b04d447L, 0xd20d85fdL, 0xa50ab56bL,
0x35b5a8faL, 0x42b2986cL, 0xdbbbc9d6L, 0xacbcf940L, 0x32d86ce3L,
0x45df5c75L, 0xdcd60dcfL, 0xabd13d59L, 0x26d930acL, 0x51de003aL,
0xc8d75180L, 0xbfd06116L, 0x21b4f4b5L, 0x56b3c423L, 0xcfba9599L,
0xb8bda50fL, 0x2802b89eL, 0x5f058808L, 0xc60cd9b2L, 0xb10be924L,
0x2f6f7c87L, 0x58684c11L, 0xc1611dabL, 0xb6662d3dL, 0x76dc4190L,
0x01db7106L, 0x98d220bcL, 0xefd5102aL, 0x71b18589L, 0x06b6b51fL,
0x9fbfe4a5L, 0xe8b8d433L, 0x7807c9a2L, 0x0f00f934L, 0x9609a88eL,
0xe10e9818L, 0x7f6a0dbbL, 0x086d3d2dL, 0x91646c97L, 0xe6635c01L,
0x6b6b51f4L, 0x1c6c6162L, 0x856530d8L, 0xf262004eL, 0x6c0695edL,
0x1b01a57bL, 0x8208f4c1L, 0xf50fc457L, 0x65b0d9c6L, 0x12b7e950L,
0x8bbeb8eaL, 0xfcb9887cL, 0x62dd1ddfL, 0x15da2d49L, 0x8cd37cf3L,
0xfbd44c65L, 0x4db26158L, 0x3ab551ceL, 0xa3bc0074L, 0xd4bb30e2L,
0x4adfa541L, 0x3dd895d7L, 0xa4d1c46dL, 0xd3d6f4fbL, 0x4369e96aL,
0x346ed9fcL, 0xad678846L, 0xda60b8d0L, 0x44042d73L, 0x33031de5L,
0xaa0a4c5fL, 0xdd0d7cc9L, 0x5005713cL, 0x270241aaL, 0xbe0b1010L,
0xc90c2086L, 0x5768b525L, 0x206f85b3L, 0xb966d409L, 0xce61e49fL,
0x5edef90eL, 0x29d9c998L, 0xb0d09822L, 0xc7d7a8b4L, 0x59b33d17L,
0x2eb40d81L, 0xb7bd5c3bL, 0xc0ba6cadL, 0xedb88320L, 0x9abfb3b6L,
0x03b6e20cL, 0x74b1d29aL, 0xead54739L, 0x9dd277afL, 0x04db2615L,
0x73dc1683L, 0xe3630b12L, 0x94643b84L, 0x0d6d6a3eL, 0x7a6a5aa8L,
0xe40ecf0bL, 0x9309ff9dL, 0x0a00ae27L, 0x7d079eb1L, 0xf00f9344L,
0x8708a3d2L, 0x1e01f268L, 0x6906c2feL, 0xf762575dL, 0x806567cbL,
0x196c3671L, 0x6e6b06e7L, 0xfed41b76L, 0x89d32be0L, 0x10da7a5aL,
0x67dd4accL, 0xf9b9df6fL, 0x8ebeeff9L, 0x17b7be43L, 0x60b08ed5L,
0xd6d6a3e8L, 0xa1d1937eL, 0x38d8c2c4L, 0x4fdff252L, 0xd1bb67f1L,
0xa6bc5767L, 0x3fb506ddL, 0x48b2364bL, 0xd80d2bdaL, 0xaf0a1b4cL,
0x36034af6L, 0x41047a60L, 0xdf60efc3L, 0xa867df55L, 0x316e8eefL,
0x4669be79L, 0xcb61b38cL, 0xbc66831aL, 0x256fd2a0L, 0x5268e236L,
0xcc0c7795L, 0xbb0b4703L, 0x220216b9L, 0x5505262fL, 0xc5ba3bbeL,
0xb2bd0b28L, 0x2bb45a92L, 0x5cb36a04L, 0xc2d7ffa7L, 0xb5d0cf31L,
0x2cd99e8bL, 0x5bdeae1dL, 0x9b64c2b0L, 0xec63f226L, 0x756aa39cL,
0x026d930aL, 0x9c0906a9L, 0xeb0e363fL, 0x72076785L, 0x05005713L,
0x95bf4a82L, 0xe2b87a14L, 0x7bb12baeL, 0x0cb61b38L, 0x92d28e9bL,
0xe5d5be0dL, 0x7cdcefb7L, 0x0bdbdf21L, 0x86d3d2d4L, 0xf1d4e242L,
0x68ddb3f8L, 0x1fda836eL, 0x81be16cdL, 0xf6b9265bL, 0x6fb077e1L,
0x18b74777L, 0x88085ae6L, 0xff0f6a70L, 0x66063bcaL, 0x11010b5cL,
0x8f659effL, 0xf862ae69L, 0x616bffd3L, 0x166ccf45L, 0xa00ae278L,
0xd70dd2eeL, 0x4e048354L, 0x3903b3c2L, 0xa7672661L, 0xd06016f7L,
0x4969474dL, 0x3e6e77dbL, 0xaed16a4aL, 0xd9d65adcL, 0x40df0b66L,
0x37d83bf0L, 0xa9bcae53L, 0xdebb9ec5L, 0x47b2cf7fL, 0x30b5ffe9L,
0xbdbdf21cL, 0xcabac28aL, 0x53b39330L, 0x24b4a3a6L, 0xbad03605L,
0xcdd70693L, 0x54de5729L, 0x23d967bfL, 0xb3667a2eL, 0xc4614ab8L,
0x5d681b02L, 0x2a6f2b94L, 0xb40bbe37L, 0xc30c8ea1L, 0x5a05df1bL,
0x2d02ef8dL
};

19
package/mtd/src/crc32.h Normal file
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@ -0,0 +1,19 @@
#ifndef CRC32_H
#define CRC32_H
#include <stdint.h>
extern const uint32_t crc32_table[256];
/* Return a 32-bit CRC of the contents of the buffer. */
static inline uint32_t
crc32(uint32_t val, const void *ss, int len)
{
const unsigned char *s = ss;
while (--len >= 0)
val = crc32_table[(val ^ *s++) & 0xff] ^ (val >> 8);
return val;
}
#endif

303
package/mtd/src/jffs2.c Normal file
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@ -0,0 +1,303 @@
#include <sys/types.h>
#include <sys/stat.h>
#include <stdint.h>
#include <stdio.h>
#include <fcntl.h>
#include <stdlib.h>
#include <string.h>
#include <dirent.h>
#include <unistd.h>
#include "jffs2.h"
#include "crc32.h"
#include "mtd.h"
#define PAD(x) (((x)+3)&~3)
#define CLEANMARKER "\x85\x19\x03\x20\x0c\x00\x00\x00\xb1\xb0\x1e\xe4"
#define JFFS2_EOF "\xde\xad\xc0\xde"
static int last_ino = 0;
static int last_version = 0;
static char *buf = NULL;
static int ofs = 0;
static int outfd = 0;
static int mtdofs = 0;
static void prep_eraseblock(void);
static void pad(int size)
{
if ((ofs % size == 0) && (ofs < erasesize))
return;
if (ofs < erasesize) {
memset(buf + ofs, 0xff, (size - (ofs % size)));
ofs += (size - (ofs % size));
}
ofs = ofs % erasesize;
if (ofs == 0) {
mtd_erase_block(outfd, mtdofs);
write(outfd, buf, erasesize);
mtdofs += erasesize;
}
}
static inline int rbytes(void)
{
return erasesize - (ofs % erasesize);
}
static inline void add_data(char *ptr, int len)
{
if (ofs + len > erasesize) {
pad(erasesize);
prep_eraseblock();
}
memcpy(buf + ofs, ptr, len);
ofs += len;
}
static void prep_eraseblock(void)
{
if (ofs > 0)
return;
add_data(CLEANMARKER, sizeof(CLEANMARKER) - 1);
}
static int add_dirent(char *name, char type, int parent)
{
struct jffs2_raw_dirent *de;
if (ofs - erasesize < sizeof(struct jffs2_raw_dirent) + strlen(name))
pad(erasesize);
prep_eraseblock();
last_ino++;
memset(buf + ofs, 0, sizeof(struct jffs2_raw_dirent));
de = (struct jffs2_raw_dirent *) (buf + ofs);
de->magic = JFFS2_MAGIC_BITMASK;
de->nodetype = JFFS2_NODETYPE_DIRENT;
de->type = type;
de->name_crc = crc32(0, name, strlen(name));
de->ino = last_ino++;
de->pino = parent;
de->totlen = sizeof(*de) + strlen(name);
de->hdr_crc = crc32(0, (void *) de, sizeof(struct jffs2_unknown_node) - 4);
de->version = last_version++;
de->mctime = 0;
de->nsize = strlen(name);
de->node_crc = crc32(0, (void *) de, sizeof(*de) - 8);
memcpy(de->name, name, strlen(name));
ofs += sizeof(struct jffs2_raw_dirent) + de->nsize;
pad(4);
return de->ino;
}
static int add_dir(char *name, int parent)
{
struct jffs2_raw_inode ri;
int inode;
inode = add_dirent(name, IFTODT(S_IFDIR), parent);
if (rbytes() < sizeof(ri))
pad(erasesize);
prep_eraseblock();
memset(&ri, 0, sizeof(ri));
ri.magic = JFFS2_MAGIC_BITMASK;
ri.nodetype = JFFS2_NODETYPE_INODE;
ri.totlen = sizeof(ri);
ri.hdr_crc = crc32(0, &ri, sizeof(struct jffs2_unknown_node) - 4);
ri.ino = inode;
ri.mode = S_IFDIR | 0755;
ri.uid = ri.gid = 0;
ri.atime = ri.ctime = ri.mtime = 0;
ri.isize = ri.csize = ri.dsize = 0;
ri.version = 1;
ri.node_crc = crc32(0, &ri, sizeof(ri) - 8);
ri.data_crc = 0;
add_data((char *) &ri, sizeof(ri));
pad(4);
return inode;
}
static void add_file(char *name, int parent)
{
int inode, f_offset = 0, fd;
struct jffs2_raw_inode ri;
struct stat st;
char wbuf[4096], *fname;
FILE *f;
if (stat(name, &st)) {
fprintf(stderr, "File %s does not exist\n", name);
return;
}
fname = strrchr(name, '/');
if (fname)
fname++;
else
fname = name;
inode = add_dirent(name, IFTODT(S_IFREG), parent);
memset(&ri, 0, sizeof(ri));
ri.magic = JFFS2_MAGIC_BITMASK;
ri.nodetype = JFFS2_NODETYPE_INODE;
ri.ino = inode;
ri.mode = st.st_mode;
ri.uid = ri.gid = 0;
ri.atime = st.st_atime;
ri.ctime = st.st_ctime;
ri.mtime = st.st_mtime;
ri.isize = st.st_size;
ri.compr = 0;
ri.usercompr = 0;
fd = open(name, 0);
if (fd <= 0) {
fprintf(stderr, "File %s does not exist\n", name);
return;
}
for (;;) {
int len = 0;
for (;;) {
len = rbytes() - sizeof(ri);
if (len > 128)
break;
pad(erasesize);
prep_eraseblock();
}
if (len > sizeof(wbuf))
len = sizeof(wbuf);
len = read(fd, wbuf, len);
if (len <= 0)
break;
ri.totlen = sizeof(ri) + len;
ri.hdr_crc = crc32(0, &ri, sizeof(struct jffs2_unknown_node) - 4);
ri.version = ++last_version;
ri.offset = f_offset;
ri.csize = ri.dsize = len;
ri.node_crc = crc32(0, &ri, sizeof(ri) - 8);
ri.data_crc = crc32(0, wbuf, len);
f_offset += len;
add_data((char *) &ri, sizeof(ri));
add_data(wbuf, len);
pad(4);
prep_eraseblock();
}
close(fd);
}
int mtd_write_jffs2(char *mtd, char *filename, char *dir)
{
int target_ino = 0;
int err = -1, fdeof = 0;
off_t offset;
outfd = mtd_check_open(mtd);
if (!outfd)
return -1;
if (quiet < 2)
fprintf(stderr, "Appending %s to jffs2 partition %s\n", filename, mtd);
buf = malloc(erasesize);
if (!buf) {
fprintf(stderr, "Out of memory!\n");
goto done;
}
/* parse the structure of the jffs2 first
* locate the directory that the file is going to be placed in */
for(;;) {
struct jffs2_unknown_node *node = (struct jffs2_unknown_node *) buf;
unsigned int ofs = 0;
if (read(outfd, buf, erasesize) != erasesize) {
fdeof = 1;
break;
}
mtdofs += erasesize;
if (node->magic == 0x8519) {
fprintf(stderr, "Error: wrong endianness filesystem\n");
goto done;
}
/* assume no magic == end of filesystem
* the filesystem will probably end with be32(0xdeadc0de) */
if (node->magic != 0x1985)
break;
while (ofs < erasesize) {
node = (struct jffs2_unknown_node *) (buf + ofs);
if (node->magic == 0x1985) {
ofs += PAD(node->totlen);
if (node->nodetype == JFFS2_NODETYPE_DIRENT) {
struct jffs2_raw_dirent *de = (struct jffs2_raw_dirent *) node;
/* is this the right directory name and is it a subdirectory of / */
if ((de->pino == 1) && !strncmp(de->name, dir, de->nsize))
target_ino = de->ino;
/* store the last inode and version numbers for adding extra files */
if (last_ino < de->ino)
last_ino = de->ino;
if (last_version < de->version)
last_version = de->version;
}
} else {
ofs = ~0;
}
}
}
if (fdeof) {
fprintf(stderr, "Error: No room for additional data\n");
goto done;
}
/* jump back one eraseblock */
mtdofs -= erasesize;
lseek(outfd, mtdofs, SEEK_SET);
ofs = 0;
if (!last_ino)
last_ino = 1;
if (!target_ino)
target_ino = add_dir(dir, 1);
add_file(filename, target_ino);
pad(erasesize);
/* add eof marker, pad to eraseblock size and write the data */
add_data(JFFS2_EOF, sizeof(JFFS2_EOF) - 1);
pad(erasesize);
err = 0;
done:
close(outfd);
if (buf)
free(buf);
return err;
}

217
package/mtd/src/jffs2.h Normal file
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@ -0,0 +1,217 @@
/*
* JFFS2 -- Journalling Flash File System, Version 2.
*
* Copyright (C) 2001-2003 Red Hat, Inc.
*
* Created by David Woodhouse <dwmw2@infradead.org>
*
* For licensing information, see the file 'LICENCE' in the
* jffs2 directory.
*
* $Id: jffs2.h,v 1.38 2005/09/26 11:37:23 havasi Exp $
*
*/
#ifndef __LINUX_JFFS2_H__
#define __LINUX_JFFS2_H__
#define JFFS2_SUPER_MAGIC 0x72b6
/* You must include something which defines the C99 uintXX_t types.
We don't do it from here because this file is used in too many
different environments. */
/* Values we may expect to find in the 'magic' field */
#define JFFS2_OLD_MAGIC_BITMASK 0x1984
#define JFFS2_MAGIC_BITMASK 0x1985
#define KSAMTIB_CIGAM_2SFFJ 0x8519 /* For detecting wrong-endian fs */
#define JFFS2_EMPTY_BITMASK 0xffff
#define JFFS2_DIRTY_BITMASK 0x0000
/* Summary node MAGIC marker */
#define JFFS2_SUM_MAGIC 0x02851885
/* We only allow a single char for length, and 0xFF is empty flash so
we don't want it confused with a real length. Hence max 254.
*/
#define JFFS2_MAX_NAME_LEN 254
/* How small can we sensibly write nodes? */
#define JFFS2_MIN_DATA_LEN 128
#define JFFS2_COMPR_NONE 0x00
#define JFFS2_COMPR_ZERO 0x01
#define JFFS2_COMPR_RTIME 0x02
#define JFFS2_COMPR_RUBINMIPS 0x03
#define JFFS2_COMPR_COPY 0x04
#define JFFS2_COMPR_DYNRUBIN 0x05
#define JFFS2_COMPR_ZLIB 0x06
/* Compatibility flags. */
#define JFFS2_COMPAT_MASK 0xc000 /* What do to if an unknown nodetype is found */
#define JFFS2_NODE_ACCURATE 0x2000
/* INCOMPAT: Fail to mount the filesystem */
#define JFFS2_FEATURE_INCOMPAT 0xc000
/* ROCOMPAT: Mount read-only */
#define JFFS2_FEATURE_ROCOMPAT 0x8000
/* RWCOMPAT_COPY: Mount read/write, and copy the node when it's GC'd */
#define JFFS2_FEATURE_RWCOMPAT_COPY 0x4000
/* RWCOMPAT_DELETE: Mount read/write, and delete the node when it's GC'd */
#define JFFS2_FEATURE_RWCOMPAT_DELETE 0x0000
#define JFFS2_NODETYPE_DIRENT (JFFS2_FEATURE_INCOMPAT | JFFS2_NODE_ACCURATE | 1)
#define JFFS2_NODETYPE_INODE (JFFS2_FEATURE_INCOMPAT | JFFS2_NODE_ACCURATE | 2)
#define JFFS2_NODETYPE_CLEANMARKER (JFFS2_FEATURE_RWCOMPAT_DELETE | JFFS2_NODE_ACCURATE | 3)
#define JFFS2_NODETYPE_PADDING (JFFS2_FEATURE_RWCOMPAT_DELETE | JFFS2_NODE_ACCURATE | 4)
#define JFFS2_NODETYPE_SUMMARY (JFFS2_FEATURE_RWCOMPAT_DELETE | JFFS2_NODE_ACCURATE | 6)
#define JFFS2_NODETYPE_XATTR (JFFS2_FEATURE_INCOMPAT | JFFS2_NODE_ACCURATE | 8)
#define JFFS2_NODETYPE_XREF (JFFS2_FEATURE_INCOMPAT | JFFS2_NODE_ACCURATE | 9)
/* XATTR Related */
#define JFFS2_XPREFIX_USER 1 /* for "user." */
#define JFFS2_XPREFIX_SECURITY 2 /* for "security." */
#define JFFS2_XPREFIX_ACL_ACCESS 3 /* for "system.posix_acl_access" */
#define JFFS2_XPREFIX_ACL_DEFAULT 4 /* for "system.posix_acl_default" */
#define JFFS2_XPREFIX_TRUSTED 5 /* for "trusted.*" */
#define JFFS2_ACL_VERSION 0x0001
// Maybe later...
//#define JFFS2_NODETYPE_CHECKPOINT (JFFS2_FEATURE_RWCOMPAT_DELETE | JFFS2_NODE_ACCURATE | 3)
//#define JFFS2_NODETYPE_OPTIONS (JFFS2_FEATURE_RWCOMPAT_COPY | JFFS2_NODE_ACCURATE | 4)
#define JFFS2_INO_FLAG_PREREAD 1 /* Do read_inode() for this one at
mount time, don't wait for it to
happen later */
#define JFFS2_INO_FLAG_USERCOMPR 2 /* User has requested a specific
compression type */
/* These can go once we've made sure we've caught all uses without
byteswapping */
typedef uint32_t jint32_t;
typedef uint32_t jmode_t;
typedef uint16_t jint16_t;
struct jffs2_unknown_node
{
/* All start like this */
jint16_t magic;
jint16_t nodetype;
jint32_t totlen; /* So we can skip over nodes we don't grok */
jint32_t hdr_crc;
};
struct jffs2_raw_dirent
{
jint16_t magic;
jint16_t nodetype; /* == JFFS2_NODETYPE_DIRENT */
jint32_t totlen;
jint32_t hdr_crc;
jint32_t pino;
jint32_t version;
jint32_t ino; /* == zero for unlink */
jint32_t mctime;
uint8_t nsize;
uint8_t type;
uint8_t unused[2];
jint32_t node_crc;
jint32_t name_crc;
uint8_t name[0];
};
/* The JFFS2 raw inode structure: Used for storage on physical media. */
/* The uid, gid, atime, mtime and ctime members could be longer, but
are left like this for space efficiency. If and when people decide
they really need them extended, it's simple enough to add support for
a new type of raw node.
*/
struct jffs2_raw_inode
{
jint16_t magic; /* A constant magic number. */
jint16_t nodetype; /* == JFFS2_NODETYPE_INODE */
jint32_t totlen; /* Total length of this node (inc data, etc.) */
jint32_t hdr_crc;
jint32_t ino; /* Inode number. */
jint32_t version; /* Version number. */
jmode_t mode; /* The file's type or mode. */
jint16_t uid; /* The file's owner. */
jint16_t gid; /* The file's group. */
jint32_t isize; /* Total resultant size of this inode (used for truncations) */
jint32_t atime; /* Last access time. */
jint32_t mtime; /* Last modification time. */
jint32_t ctime; /* Change time. */
jint32_t offset; /* Where to begin to write. */
jint32_t csize; /* (Compressed) data size */
jint32_t dsize; /* Size of the node's data. (after decompression) */
uint8_t compr; /* Compression algorithm used */
uint8_t usercompr; /* Compression algorithm requested by the user */
jint16_t flags; /* See JFFS2_INO_FLAG_* */
jint32_t data_crc; /* CRC for the (compressed) data. */
jint32_t node_crc; /* CRC for the raw inode (excluding data) */
uint8_t data[0];
};
struct jffs2_raw_xattr {
jint16_t magic;
jint16_t nodetype; /* = JFFS2_NODETYPE_XATTR */
jint32_t totlen;
jint32_t hdr_crc;
jint32_t xid; /* XATTR identifier number */
jint32_t version;
uint8_t xprefix;
uint8_t name_len;
jint16_t value_len;
jint32_t data_crc;
jint32_t node_crc;
uint8_t data[0];
} __attribute__((packed));
struct jffs2_raw_xref
{
jint16_t magic;
jint16_t nodetype; /* = JFFS2_NODETYPE_XREF */
jint32_t totlen;
jint32_t hdr_crc;
jint32_t ino; /* inode number */
jint32_t xid; /* XATTR identifier number */
jint32_t xseqno; /* xref sequencial number */
jint32_t node_crc;
} __attribute__((packed));
struct jffs2_raw_summary
{
jint16_t magic;
jint16_t nodetype; /* = JFFS2_NODETYPE_SUMMARY */
jint32_t totlen;
jint32_t hdr_crc;
jint32_t sum_num; /* number of sum entries*/
jint32_t cln_mkr; /* clean marker size, 0 = no cleanmarker */
jint32_t padded; /* sum of the size of padding nodes */
jint32_t sum_crc; /* summary information crc */
jint32_t node_crc; /* node crc */
jint32_t sum[0]; /* inode summary info */
};
union jffs2_node_union
{
struct jffs2_raw_inode i;
struct jffs2_raw_dirent d;
struct jffs2_raw_xattr x;
struct jffs2_raw_xref r;
struct jffs2_raw_summary s;
struct jffs2_unknown_node u;
};
/* Data payload for device nodes. */
union jffs2_device_node {
jint16_t old;
jint32_t new;
};
#endif /* __LINUX_JFFS2_H__ */

0
package/mtd/src/mtd.h → package/mtd/src/mtd-api.h
View File

295
package/mtd/src/mtd.c
View File

@ -28,6 +28,7 @@
#include <stdlib.h>
#include <stdio.h>
#include <stdint.h>
#include <signal.h>
#include <sys/ioctl.h>
#include <sys/syscall.h>
#include <fcntl.h>
@ -43,7 +44,7 @@
#include <sys/reboot.h>
#include <linux/reboot.h>
#include "mtd.h"
#include "mtd-api.h"
#define TRX_MAGIC 0x30524448 /* "HDR0" */
#define BUFSIZE (16 * 1024)
@ -51,6 +52,8 @@
#define DEBUG
#define JFFS2_DEFAULT_DIR "tmp"
#define SYSTYPE_UNKNOWN 0
#define SYSTYPE_BROADCOM 1
/* to be continued */
@ -63,16 +66,86 @@ struct trx_header {
uint32_t offsets[3]; /* Offsets of partitions from start of header */
};
char buf[BUFSIZE];
int buflen;
static char buf[BUFSIZE];
static char *imagefile;
static int buflen;
int quiet;
int mtdsize = 0;
int erasesize = 0;
int mtd_open(const char *mtd)
{
FILE *fp;
char dev[PATH_MAX];
int i;
int ret;
int flags = O_RDWR | O_SYNC;
if ((fp = fopen("/proc/mtd", "r"))) {
while (fgets(dev, sizeof(dev), fp)) {
if (sscanf(dev, "mtd%d:", &i) && strstr(dev, mtd)) {
snprintf(dev, sizeof(dev), "/dev/mtd/%d", i);
if ((ret=open(dev, flags))<0) {
snprintf(dev, sizeof(dev), "/dev/mtd%d", i);
ret=open(dev, flags);
}
fclose(fp);
return ret;
}
}
fclose(fp);
}
return open(mtd, flags);
}
int mtd_check_open(const char *mtd)
{
struct mtd_info_user mtdInfo;
int fd;
fd = mtd_open(mtd);
if(fd < 0) {
fprintf(stderr, "Could not open mtd device: %s\n", mtd);
return 0;
}
if(ioctl(fd, MEMGETINFO, &mtdInfo)) {
fprintf(stderr, "Could not get MTD device info from %s\n", mtd);
close(fd);
return 0;
}
mtdsize = mtdInfo.size;
erasesize = mtdInfo.erasesize;
return fd;
}
int mtd_erase_block(int fd, int offset)
{
struct erase_info_user mtdEraseInfo;
mtdEraseInfo.start = offset;
mtdEraseInfo.length = erasesize;
ioctl(fd, MEMUNLOCK, &mtdEraseInfo);
if (ioctl (fd, MEMERASE, &mtdEraseInfo) < 0) {
fprintf(stderr, "Erasing mtd failed.\n");
exit(1);
}
}
int mtd_write_buffer(int fd, char *buf, int offset, int length)
{
lseek(fd, offset, SEEK_SET);
write(fd, buf, length);
}
#ifdef target_brcm
int
static int
image_check_brcm(int imagefd, const char *mtd)
{
struct trx_header *trx = (struct trx_header *) buf;
struct mtd_info_user mtdInfo;
int fd;
if (strcmp(mtd, "linux") != 0)
@ -94,18 +167,13 @@ image_check_brcm(int imagefd, const char *mtd)
}
/* check if image fits to mtd device */
fd = mtd_open(mtd, O_RDWR | O_SYNC);
fd = mtd_check_open(mtd);
if(fd < 0) {
fprintf(stderr, "Could not open mtd device: %s\n", mtd);
exit(1);
}
if(ioctl(fd, MEMGETINFO, &mtdInfo)) {
fprintf(stderr, "Could not get MTD device info from %s\n", mtd);
exit(1);
}
if(mtdInfo.size < trx->len) {
if(mtdsize < trx->len) {
fprintf(stderr, "Image too big for partition: %s\n", mtd);
close(fd);
return 0;
@ -116,7 +184,7 @@ image_check_brcm(int imagefd, const char *mtd)
}
#endif /* target_brcm */
int
static int
image_check(int imagefd, const char *mtd)
{
int fd, systype;
@ -129,48 +197,35 @@ image_check(int imagefd, const char *mtd)
#endif
}
int mtd_check(char *mtd)
static int mtd_check(const char *mtd)
{
struct mtd_info_user mtdInfo;
int fd;
fd = mtd_open(mtd, O_RDWR | O_SYNC);
if(fd < 0) {
fprintf(stderr, "Could not open mtd device: %s\n", mtd);
fd = mtd_check_open(mtd);
if (!fd)
return 0;
}
if(ioctl(fd, MEMGETINFO, &mtdInfo)) {
fprintf(stderr, "Could not get MTD device info from %s\n", mtd);
close(fd);
return 0;
}
close(fd);
return 1;
}
int
static int
mtd_unlock(const char *mtd)
{
int fd;
struct mtd_info_user mtdInfo;
struct erase_info_user mtdLockInfo;
fd = mtd_open(mtd, O_RDWR | O_SYNC);
if(fd < 0) {
fd = mtd_check_open(mtd);
if(fd <= 0) {
fprintf(stderr, "Could not open mtd device: %s\n", mtd);
exit(1);
}
if(ioctl(fd, MEMGETINFO, &mtdInfo)) {
fprintf(stderr, "Could not get MTD device info from %s\n", mtd);
close(fd);
exit(1);
}
if (quiet < 2)
fprintf(stderr, "Unlocking %s ...\n", mtd);
mtdLockInfo.start = 0;
mtdLockInfo.length = mtdInfo.size;
mtdLockInfo.length = mtdsize;
if(ioctl(fd, MEMUNLOCK, &mtdLockInfo)) {
close(fd);
return 0;
@ -180,56 +235,26 @@ mtd_unlock(const char *mtd)
return 0;
}
int
mtd_open(const char *mtd, int flags)
{
FILE *fp;
char dev[PATH_MAX];
int i;
int ret;
if ((fp = fopen("/proc/mtd", "r"))) {
while (fgets(dev, sizeof(dev), fp)) {
if (sscanf(dev, "mtd%d:", &i) && strstr(dev, mtd)) {
snprintf(dev, sizeof(dev), "/dev/mtd/%d", i);
if ((ret=open(dev, flags))<0) {
snprintf(dev, sizeof(dev), "/dev/mtd%d", i);
ret=open(dev, flags);
}
fclose(fp);
return ret;
}
}
fclose(fp);
}
return open(mtd, flags);
}
int
static int
mtd_erase(const char *mtd)
{
int fd;
struct mtd_info_user mtdInfo;
struct erase_info_user mtdEraseInfo;
fd = mtd_open(mtd, O_RDWR | O_SYNC);
if(fd < 0) {
if (quiet < 2)
fprintf(stderr, "Erasing %s ...\n", mtd);
fd = mtd_check_open(mtd);
if(fd <= 0) {
fprintf(stderr, "Could not open mtd device: %s\n", mtd);
exit(1);
}
if(ioctl(fd, MEMGETINFO, &mtdInfo)) {
fprintf(stderr, "Could not get MTD device info from %s\n", mtd);
close(fd);
exit(1);
}
mtdEraseInfo.length = mtdInfo.erasesize;
mtdEraseInfo.length = erasesize;
for (mtdEraseInfo.start = 0;
mtdEraseInfo.start < mtdInfo.size;
mtdEraseInfo.start += mtdInfo.erasesize) {
mtdEraseInfo.start < mtdsize;
mtdEraseInfo.start += erasesize) {
ioctl(fd, MEMUNLOCK, &mtdEraseInfo);
if(ioctl(fd, MEMERASE, &mtdEraseInfo))
@ -241,46 +266,50 @@ mtd_erase(const char *mtd)
}
int
static int
mtd_refresh(const char *mtd)
{
int fd;
fd = mtd_open(mtd, O_RDWR | O_SYNC);
if(fd < 0) {
if (quiet < 2)
fprintf(stderr, "Refreshing mtd partition %s ... ", mtd);
fd = mtd_check_open(mtd);
if(fd <= 0) {
fprintf(stderr, "Could not open mtd device: %s\n", mtd);
exit(1);
}
if (ioctl(fd, MTDREFRESH, NULL)) {
fprintf(stderr, "Failed to refresh the MTD device\n");
close(fd);
exit(1);
}
close(fd);
if (quiet < 2)
fprintf(stderr, "\n");
return 0;
}
int
static int
mtd_write(int imagefd, const char *mtd)
{
int fd, i, result;
size_t r, w, e;
struct mtd_info_user mtdInfo;
struct erase_info_user mtdEraseInfo;
int ret = 0;
fd = mtd_open(mtd, O_RDWR | O_SYNC);
fd = mtd_check_open(mtd);
if(fd < 0) {
fprintf(stderr, "Could not open mtd device: %s\n", mtd);
exit(1);
}
if(ioctl(fd, MEMGETINFO, &mtdInfo)) {
fprintf(stderr, "Could not get MTD device info from %s\n", mtd);
close(fd);
exit(1);
}
if (quiet < 2)
fprintf(stderr, "Writing from %s to %s ... ", imagefile, mtd);
r = w = e = 0;
if (!quiet)
fprintf(stderr, " [ ]");
@ -296,17 +325,13 @@ mtd_write(int imagefd, const char *mtd)
/* need to erase the next block before writing data to it */
while (w > e) {
mtdEraseInfo.start = e;
mtdEraseInfo.length = mtdInfo.erasesize;
if (!quiet)
fprintf(stderr, "\b\b\b[e]");
mtd_erase_block(fd, e);
/* erase the chunk */
if (ioctl (fd,MEMERASE,&mtdEraseInfo) < 0) {
fprintf(stderr, "Erasing mtd failed: %s\n", mtd);
exit(1);
}
e += mtdInfo.erasesize;
e += erasesize;
}
if (!quiet)
@ -327,11 +352,14 @@ mtd_write(int imagefd, const char *mtd)
if (!quiet)
fprintf(stderr, "\b\b\b\b");
if (quiet < 2)
fprintf(stderr, "\n");
close(fd);
return 0;
}
void usage(void)
static void usage(void)
{
fprintf(stderr, "Usage: mtd [<options> ...] <command> [<arguments> ...] <device>\n\n"
"The device is in the format of mtdX (eg: mtd4) or its label.\n"
@ -340,26 +368,44 @@ void usage(void)
" refresh refresh mtd partition\n"
" erase erase all data on device\n"
" write <imagefile>|- write <imagefile> (use - for stdin) to device\n"
" jffs2write <file> append <file> to the jffs2 partition on the device\n"
"Following options are available:\n"
" -q quiet mode (once: no [w] on writing,\n"
" twice: no status messages)\n"
" -r reboot after successful command\n"
" -f force write without trx checks\n"
" -e <device> erase <device> before executing the command\n\n"
" -e <device> erase <device> before executing the command\n"
" -d <name> directory for jffs2write, defaults to \"tmp\"\n"
"\n"
"Example: To write linux.trx to mtd4 labeled as linux and reboot afterwards\n"
" mtd -r write linux.trx linux\n\n");
exit(1);
}
static void do_reboot(void)
{
fprintf(stderr, "Rebooting ...\n");
fflush(stderr);
/* try regular reboot method first */
system("/sbin/reboot");
sleep(2);
/* if we're still alive at this point, force the kernel to reboot */
syscall(SYS_reboot,LINUX_REBOOT_MAGIC1,LINUX_REBOOT_MAGIC2,LINUX_REBOOT_CMD_RESTART,NULL);
}
int main (int argc, char **argv)
{
int ch, i, boot, unlock, imagefd, force, unlocked;
char *erase[MAX_ARGS], *device, *imagefile;
char *erase[MAX_ARGS], *device;
char *jffs2dir = JFFS2_DEFAULT_DIR;
enum {
CMD_ERASE,
CMD_WRITE,
CMD_UNLOCK,
CMD_REFRESH
CMD_REFRESH,
CMD_JFFS2WRITE
} cmd;
erase[0] = NULL;
@ -368,7 +414,7 @@ int main (int argc, char **argv)
buflen = 0;
quiet = 0;
while ((ch = getopt(argc, argv, "frqe:")) != -1)
while ((ch = getopt(argc, argv, "frqe:d:")) != -1)
switch (ch) {
case 'f':
force = 1;
@ -387,7 +433,9 @@ int main (int argc, char **argv)
erase[i++] = optarg;
erase[i] = NULL;
break;
case 'd':
jffs2dir = optarg;
break;
case '?':
default:
usage();
@ -434,6 +482,15 @@ int main (int argc, char **argv)
exit(1);
}
}
} else if ((strcmp(argv[0], "jffs2write") == 0) && (argc == 3)) {
cmd = CMD_JFFS2WRITE;
device = argv[2];
imagefile = argv[1];
if (!mtd_check(device)) {
fprintf(stderr, "Can't open device for writing!\n");
exit(1);
}
} else {
usage();
}
@ -443,53 +500,43 @@ int main (int argc, char **argv)
i = 0;
unlocked = 0;
while (erase[i] != NULL) {
if (quiet < 2)
fprintf(stderr, "Unlocking %s ...\n", erase[i]);
mtd_unlock(erase[i]);
if (quiet < 2)
fprintf(stderr, "Erasing %s ...\n", erase[i]);
mtd_erase(erase[i]);
if (strcmp(erase[i], device) == 0)
unlocked = 1;
i++;
}
if (!unlocked) {
if (quiet < 2)
fprintf(stderr, "Unlocking %s ...\n", device);
mtd_unlock(device);
}
switch (cmd) {
case CMD_UNLOCK:
if (!unlocked)
mtd_unlock(device);
break;
case CMD_ERASE:
if (quiet < 2)
fprintf(stderr, "Erasing %s ...\n", device);
if (!unlocked)
mtd_unlock(device);
mtd_erase(device);
break;
case CMD_WRITE:
if (quiet < 2)
fprintf(stderr, "Writing from %s to %s ... ", imagefile, device);
if (!unlocked)
mtd_unlock(device);
mtd_write(imagefd, device);
if (quiet < 2)
fprintf(stderr, "\n");
break;
case CMD_JFFS2WRITE:
if (!unlocked)
mtd_unlock(device);
mtd_write_jffs2(device, imagefile, jffs2dir);
break;
case CMD_REFRESH:
if (quiet < 2)
fprintf(stderr, "Refreshing mtd partition %s ... ");
mtd_refresh(device);
if (quiet < 2)
fprintf(stderr, "\n");
break;
}
sync();
if (boot) {
fprintf(stderr, "Rebooting ...\n");
fflush(stderr);
syscall(SYS_reboot,LINUX_REBOOT_MAGIC1,LINUX_REBOOT_MAGIC2,LINUX_REBOOT_CMD_RESTART,NULL);
}
if (boot)
do_reboot();
return 0;
}