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package/mtd: add option for fixing seama images
Signed-off-by: Gabor Juhos <juhosg@openwrt.org> git-svn-id: svn://svn.openwrt.org/openwrt/trunk@33841 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
parent
01339d91da
commit
c34b71fa3d
@ -1,5 +1,5 @@
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#
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# Copyright (C) 2006-2010 OpenWrt.org
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# Copyright (C) 2006-2012 OpenWrt.org
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#
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# This is free software, licensed under the GNU General Public License v2.
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# See /LICENSE for more information.
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@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
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include $(INCLUDE_DIR)/kernel.mk
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PKG_NAME:=mtd
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PKG_RELEASE:=19
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PKG_RELEASE:=20
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PKG_BUILD_DIR := $(KERNEL_BUILD_DIR)/$(PKG_NAME)
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STAMP_PREPARED := $(STAMP_PREPARED)_$(call confvar,CONFIG_MTD_REDBOOT_PARTS)
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@ -2,10 +2,12 @@ CC = gcc
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CFLAGS += -Wall
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obj = mtd.o jffs2.o crc32.o
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obj.seama = seama.o md5.o
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obj.ar71xx = trx.o
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obj.brcm = trx.o
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obj.brcm47xx = $(obj.brcm)
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obj.brcm63xx = imagetag.o
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obj.ramips = $(obj.seama)
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ifdef FIS_SUPPORT
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obj += fis.o
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307
package/mtd/src/md5.c
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307
package/mtd/src/md5.c
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@ -0,0 +1,307 @@
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/*
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***********************************************************************
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** md5.c -- the source code for MD5 routines **
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** RSA Data Security, Inc. MD5 Message-Digest Algorithm **
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** Created: 2/17/90 RLR **
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** Revised: 1/91 SRD,AJ,BSK,JT Reference C ver., 7/10 constant corr. **
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***********************************************************************
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*/
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/*
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***********************************************************************
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** Copyright (C) 1990, RSA Data Security, Inc. All rights reserved. **
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** **
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** License to copy and use this software is granted provided that **
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** it is identified as the "RSA Data Security, Inc. MD5 Message- **
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** Digest Algorithm" in all material mentioning or referencing this **
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** software or this function. **
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** **
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** License is also granted to make and use derivative works **
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** provided that such works are identified as "derived from the RSA **
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** Data Security, Inc. MD5 Message-Digest Algorithm" in all **
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** material mentioning or referencing the derived work. **
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** **
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** RSA Data Security, Inc. makes no representations concerning **
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** either the merchantability of this software or the suitability **
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** of this software for any particular purpose. It is provided "as **
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** is" without express or implied warranty of any kind. **
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** **
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** These notices must be retained in any copies of any part of this **
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** documentation and/or software. **
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***********************************************************************
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*/
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#include <string.h>
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#include "md5.h"
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/*
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***********************************************************************
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** Message-digest routines: **
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** To form the message digest for a message M **
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** (1) Initialize a context buffer mdContext using MD5_Init **
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** (2) Call MD5_Update on mdContext and M **
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** (3) Call MD5_Final on mdContext **
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** The message digest is now in mdContext->digest[0...15] **
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***********************************************************************
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*/
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/* forward declaration */
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static void Transform ();
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static unsigned char PADDING[64] = {
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0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
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};
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/* F, G, H and I are basic MD5 functions */
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#define F(x, y, z) (((x) & (y)) | ((~x) & (z)))
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#define G(x, y, z) (((x) & (z)) | ((y) & (~z)))
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#define H(x, y, z) ((x) ^ (y) ^ (z))
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#define I(x, y, z) ((y) ^ ((x) | (~z)))
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/* ROTATE_LEFT rotates x left n bits */
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#define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n))))
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/* FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4 */
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/* Rotation is separate from addition to prevent recomputation */
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#define FF(a, b, c, d, x, s, ac) \
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{(a) += F ((b), (c), (d)) + (x) + (UINT4)(ac); \
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(a) = ROTATE_LEFT ((a), (s)); \
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(a) += (b); \
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}
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#define GG(a, b, c, d, x, s, ac) \
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{(a) += G ((b), (c), (d)) + (x) + (UINT4)(ac); \
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(a) = ROTATE_LEFT ((a), (s)); \
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(a) += (b); \
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}
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#define HH(a, b, c, d, x, s, ac) \
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{(a) += H ((b), (c), (d)) + (x) + (UINT4)(ac); \
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(a) = ROTATE_LEFT ((a), (s)); \
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(a) += (b); \
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}
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#define II(a, b, c, d, x, s, ac) \
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{(a) += I ((b), (c), (d)) + (x) + (UINT4)(ac); \
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(a) = ROTATE_LEFT ((a), (s)); \
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(a) += (b); \
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}
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#ifdef __STDC__
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#define UL(x) x##U
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#else
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#define UL(x) x
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#endif
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/* The routine MD5_Init initializes the message-digest context
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mdContext. All fields are set to zero.
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*/
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void MD5_Init (mdContext)
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MD5_CTX *mdContext;
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{
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mdContext->i[0] = mdContext->i[1] = (UINT4)0;
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/* Load magic initialization constants.
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*/
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mdContext->buf[0] = (UINT4)0x67452301;
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mdContext->buf[1] = (UINT4)0xefcdab89;
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mdContext->buf[2] = (UINT4)0x98badcfe;
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mdContext->buf[3] = (UINT4)0x10325476;
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}
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/* The routine MD5Update updates the message-digest context to
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account for the presence of each of the characters inBuf[0..inLen-1]
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in the message whose digest is being computed.
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*/
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void MD5_Update (mdContext, inBuf, inLen)
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MD5_CTX *mdContext;
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unsigned char *inBuf;
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unsigned int inLen;
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{
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UINT4 in[16];
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int mdi;
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unsigned int i, ii;
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/* compute number of bytes mod 64 */
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mdi = (int)((mdContext->i[0] >> 3) & 0x3F);
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/* update number of bits */
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if ((mdContext->i[0] + ((UINT4)inLen << 3)) < mdContext->i[0])
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mdContext->i[1]++;
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mdContext->i[0] += ((UINT4)inLen << 3);
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mdContext->i[1] += ((UINT4)inLen >> 29);
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while (inLen--) {
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/* add new character to buffer, increment mdi */
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mdContext->in[mdi++] = *inBuf++;
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/* transform if necessary */
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if (mdi == 0x40) {
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for (i = 0, ii = 0; i < 16; i++, ii += 4)
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in[i] = (((UINT4)mdContext->in[ii+3]) << 24) |
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(((UINT4)mdContext->in[ii+2]) << 16) |
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(((UINT4)mdContext->in[ii+1]) << 8) |
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((UINT4)mdContext->in[ii]);
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Transform (mdContext->buf, in);
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mdi = 0;
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}
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}
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}
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/* The routine MD5Final terminates the message-digest computation and
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ends with the desired message digest in mdContext->digest[0...15].
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*/
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void MD5_Final (hash, mdContext)
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unsigned char hash[];
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MD5_CTX *mdContext;
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{
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UINT4 in[16];
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int mdi;
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unsigned int i, ii;
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unsigned int padLen;
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/* save number of bits */
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in[14] = mdContext->i[0];
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in[15] = mdContext->i[1];
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/* compute number of bytes mod 64 */
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mdi = (int)((mdContext->i[0] >> 3) & 0x3F);
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/* pad out to 56 mod 64 */
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padLen = (mdi < 56) ? (56 - mdi) : (120 - mdi);
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MD5_Update (mdContext, PADDING, padLen);
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/* append length in bits and transform */
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for (i = 0, ii = 0; i < 14; i++, ii += 4)
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in[i] = (((UINT4)mdContext->in[ii+3]) << 24) |
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(((UINT4)mdContext->in[ii+2]) << 16) |
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(((UINT4)mdContext->in[ii+1]) << 8) |
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((UINT4)mdContext->in[ii]);
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Transform (mdContext->buf, in);
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/* store buffer in digest */
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for (i = 0, ii = 0; i < 4; i++, ii += 4) {
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mdContext->digest[ii] = (unsigned char)(mdContext->buf[i] & 0xFF);
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mdContext->digest[ii+1] =
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(unsigned char)((mdContext->buf[i] >> 8) & 0xFF);
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mdContext->digest[ii+2] =
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(unsigned char)((mdContext->buf[i] >> 16) & 0xFF);
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mdContext->digest[ii+3] =
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(unsigned char)((mdContext->buf[i] >> 24) & 0xFF);
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}
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memcpy(hash, mdContext->digest, 16);
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}
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/* Basic MD5 step. Transforms buf based on in.
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*/
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static void Transform (buf, in)
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UINT4 *buf;
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UINT4 *in;
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{
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UINT4 a = buf[0], b = buf[1], c = buf[2], d = buf[3];
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/* Round 1 */
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#define S11 7
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#define S12 12
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#define S13 17
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#define S14 22
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FF ( a, b, c, d, in[ 0], S11, UL(3614090360)); /* 1 */
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FF ( d, a, b, c, in[ 1], S12, UL(3905402710)); /* 2 */
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FF ( c, d, a, b, in[ 2], S13, UL( 606105819)); /* 3 */
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FF ( b, c, d, a, in[ 3], S14, UL(3250441966)); /* 4 */
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FF ( a, b, c, d, in[ 4], S11, UL(4118548399)); /* 5 */
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FF ( d, a, b, c, in[ 5], S12, UL(1200080426)); /* 6 */
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FF ( c, d, a, b, in[ 6], S13, UL(2821735955)); /* 7 */
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FF ( b, c, d, a, in[ 7], S14, UL(4249261313)); /* 8 */
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FF ( a, b, c, d, in[ 8], S11, UL(1770035416)); /* 9 */
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FF ( d, a, b, c, in[ 9], S12, UL(2336552879)); /* 10 */
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FF ( c, d, a, b, in[10], S13, UL(4294925233)); /* 11 */
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FF ( b, c, d, a, in[11], S14, UL(2304563134)); /* 12 */
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FF ( a, b, c, d, in[12], S11, UL(1804603682)); /* 13 */
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FF ( d, a, b, c, in[13], S12, UL(4254626195)); /* 14 */
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FF ( c, d, a, b, in[14], S13, UL(2792965006)); /* 15 */
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FF ( b, c, d, a, in[15], S14, UL(1236535329)); /* 16 */
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/* Round 2 */
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#define S21 5
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#define S22 9
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#define S23 14
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#define S24 20
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GG ( a, b, c, d, in[ 1], S21, UL(4129170786)); /* 17 */
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GG ( d, a, b, c, in[ 6], S22, UL(3225465664)); /* 18 */
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GG ( c, d, a, b, in[11], S23, UL( 643717713)); /* 19 */
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GG ( b, c, d, a, in[ 0], S24, UL(3921069994)); /* 20 */
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GG ( a, b, c, d, in[ 5], S21, UL(3593408605)); /* 21 */
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GG ( d, a, b, c, in[10], S22, UL( 38016083)); /* 22 */
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GG ( c, d, a, b, in[15], S23, UL(3634488961)); /* 23 */
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GG ( b, c, d, a, in[ 4], S24, UL(3889429448)); /* 24 */
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GG ( a, b, c, d, in[ 9], S21, UL( 568446438)); /* 25 */
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GG ( d, a, b, c, in[14], S22, UL(3275163606)); /* 26 */
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GG ( c, d, a, b, in[ 3], S23, UL(4107603335)); /* 27 */
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GG ( b, c, d, a, in[ 8], S24, UL(1163531501)); /* 28 */
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GG ( a, b, c, d, in[13], S21, UL(2850285829)); /* 29 */
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GG ( d, a, b, c, in[ 2], S22, UL(4243563512)); /* 30 */
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GG ( c, d, a, b, in[ 7], S23, UL(1735328473)); /* 31 */
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GG ( b, c, d, a, in[12], S24, UL(2368359562)); /* 32 */
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/* Round 3 */
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#define S31 4
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#define S32 11
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#define S33 16
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#define S34 23
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HH ( a, b, c, d, in[ 5], S31, UL(4294588738)); /* 33 */
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HH ( d, a, b, c, in[ 8], S32, UL(2272392833)); /* 34 */
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HH ( c, d, a, b, in[11], S33, UL(1839030562)); /* 35 */
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HH ( b, c, d, a, in[14], S34, UL(4259657740)); /* 36 */
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HH ( a, b, c, d, in[ 1], S31, UL(2763975236)); /* 37 */
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HH ( d, a, b, c, in[ 4], S32, UL(1272893353)); /* 38 */
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HH ( c, d, a, b, in[ 7], S33, UL(4139469664)); /* 39 */
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HH ( b, c, d, a, in[10], S34, UL(3200236656)); /* 40 */
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HH ( a, b, c, d, in[13], S31, UL( 681279174)); /* 41 */
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HH ( d, a, b, c, in[ 0], S32, UL(3936430074)); /* 42 */
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HH ( c, d, a, b, in[ 3], S33, UL(3572445317)); /* 43 */
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HH ( b, c, d, a, in[ 6], S34, UL( 76029189)); /* 44 */
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HH ( a, b, c, d, in[ 9], S31, UL(3654602809)); /* 45 */
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HH ( d, a, b, c, in[12], S32, UL(3873151461)); /* 46 */
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HH ( c, d, a, b, in[15], S33, UL( 530742520)); /* 47 */
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HH ( b, c, d, a, in[ 2], S34, UL(3299628645)); /* 48 */
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/* Round 4 */
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#define S41 6
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#define S42 10
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#define S43 15
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#define S44 21
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II ( a, b, c, d, in[ 0], S41, UL(4096336452)); /* 49 */
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II ( d, a, b, c, in[ 7], S42, UL(1126891415)); /* 50 */
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II ( c, d, a, b, in[14], S43, UL(2878612391)); /* 51 */
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II ( b, c, d, a, in[ 5], S44, UL(4237533241)); /* 52 */
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II ( a, b, c, d, in[12], S41, UL(1700485571)); /* 53 */
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II ( d, a, b, c, in[ 3], S42, UL(2399980690)); /* 54 */
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II ( c, d, a, b, in[10], S43, UL(4293915773)); /* 55 */
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II ( b, c, d, a, in[ 1], S44, UL(2240044497)); /* 56 */
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II ( a, b, c, d, in[ 8], S41, UL(1873313359)); /* 57 */
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II ( d, a, b, c, in[15], S42, UL(4264355552)); /* 58 */
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II ( c, d, a, b, in[ 6], S43, UL(2734768916)); /* 59 */
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II ( b, c, d, a, in[13], S44, UL(1309151649)); /* 60 */
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II ( a, b, c, d, in[ 4], S41, UL(4149444226)); /* 61 */
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II ( d, a, b, c, in[11], S42, UL(3174756917)); /* 62 */
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II ( c, d, a, b, in[ 2], S43, UL( 718787259)); /* 63 */
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II ( b, c, d, a, in[ 9], S44, UL(3951481745)); /* 64 */
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buf[0] += a;
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buf[1] += b;
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buf[2] += c;
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buf[3] += d;
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}
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/*
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***********************************************************************
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** End of md5.c **
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******************************** (cut) ********************************
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*/
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65
package/mtd/src/md5.h
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65
package/mtd/src/md5.h
Normal file
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/*
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***********************************************************************
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** md5.h -- header file for implementation of MD5 **
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** RSA Data Security, Inc. MD5 Message-Digest Algorithm **
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** Created: 2/17/90 RLR **
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** Revised: 12/27/90 SRD,AJ,BSK,JT Reference C version **
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** Revised (for MD5): RLR 4/27/91 **
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** -- G modified to have y&~z instead of y&z **
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** -- FF, GG, HH modified to add in last register done **
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** -- Access pattern: round 2 works mod 5, round 3 works mod 3 **
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** -- distinct additive constant for each step **
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** -- round 4 added, working mod 7 **
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***********************************************************************
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*/
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/*
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***********************************************************************
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** Copyright (C) 1990, RSA Data Security, Inc. All rights reserved. **
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** **
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** License to copy and use this software is granted provided that **
|
||||
** it is identified as the "RSA Data Security, Inc. MD5 Message- **
|
||||
** Digest Algorithm" in all material mentioning or referencing this **
|
||||
** software or this function. **
|
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** **
|
||||
** License is also granted to make and use derivative works **
|
||||
** provided that such works are identified as "derived from the RSA **
|
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** Data Security, Inc. MD5 Message-Digest Algorithm" in all **
|
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** material mentioning or referencing the derived work. **
|
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** **
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** RSA Data Security, Inc. makes no representations concerning **
|
||||
** either the merchantability of this software or the suitability **
|
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** of this software for any particular purpose. It is provided "as **
|
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** is" without express or implied warranty of any kind. **
|
||||
** **
|
||||
** These notices must be retained in any copies of any part of this **
|
||||
** documentation and/or software. **
|
||||
***********************************************************************
|
||||
*/
|
||||
|
||||
#ifndef __MD5_INCLUDE__
|
||||
|
||||
/* typedef a 32-bit type */
|
||||
#ifdef _LP64
|
||||
typedef unsigned int UINT4;
|
||||
typedef int INT4;
|
||||
#else
|
||||
typedef unsigned long UINT4;
|
||||
typedef long INT4;
|
||||
#endif
|
||||
#define _UINT4_T
|
||||
|
||||
/* Data structure for MD5 (Message-Digest) computation */
|
||||
typedef struct {
|
||||
UINT4 i[2]; /* number of _bits_ handled mod 2^64 */
|
||||
UINT4 buf[4]; /* scratch buffer */
|
||||
unsigned char in[64]; /* input buffer */
|
||||
unsigned char digest[16]; /* actual digest after MD5Final call */
|
||||
} MD5_CTX;
|
||||
|
||||
void MD5_Init ();
|
||||
void MD5_Update ();
|
||||
void MD5_Final ();
|
||||
|
||||
#define __MD5_INCLUDE__
|
||||
#endif /* __MD5_INCLUDE__ */
|
@ -137,6 +137,7 @@ image_check(int imagefd, const char *mtd)
|
||||
if (trx_check) {
|
||||
ret = trx_check(imagefd, mtd, buf, &buflen);
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
@ -520,6 +521,10 @@ static void usage(void)
|
||||
fprintf(stderr,
|
||||
" fixtrx fix the checksum in a trx header on first boot\n");
|
||||
}
|
||||
if (mtd_fixseama) {
|
||||
fprintf(stderr,
|
||||
" fixseama fix the checksum in a seama header on first boot\n");
|
||||
}
|
||||
fprintf(stderr,
|
||||
"Following options are available:\n"
|
||||
" -q quiet mode (once: no [w] on writing,\n"
|
||||
@ -574,6 +579,7 @@ int main (int argc, char **argv)
|
||||
CMD_REFRESH,
|
||||
CMD_JFFS2WRITE,
|
||||
CMD_FIXTRX,
|
||||
CMD_FIXSEAMA,
|
||||
} cmd = -1;
|
||||
|
||||
erase[0] = NULL;
|
||||
@ -662,6 +668,9 @@ int main (int argc, char **argv)
|
||||
} else if (((strcmp(argv[0], "fixtrx") == 0) && (argc == 2)) && mtd_fixtrx) {
|
||||
cmd = CMD_FIXTRX;
|
||||
device = argv[1];
|
||||
} else if (((strcmp(argv[0], "fixseama") == 0) && (argc == 2)) && mtd_fixseama) {
|
||||
cmd = CMD_FIXSEAMA;
|
||||
device = argv[1];
|
||||
} else if ((strcmp(argv[0], "write") == 0) && (argc == 3)) {
|
||||
cmd = CMD_WRITE;
|
||||
device = argv[2];
|
||||
@ -738,6 +747,9 @@ int main (int argc, char **argv)
|
||||
if (mtd_fixtrx) {
|
||||
mtd_fixtrx(device, offset);
|
||||
}
|
||||
case CMD_FIXSEAMA:
|
||||
if (mtd_fixseama)
|
||||
mtd_fixseama(device, 0);
|
||||
break;
|
||||
}
|
||||
|
||||
|
@ -25,4 +25,5 @@ extern void mtd_parse_jffs2data(const char *buf, const char *dir);
|
||||
extern int trx_fixup(int fd, const char *name) __attribute__ ((weak));
|
||||
extern int trx_check(int imagefd, const char *mtd, char *buf, int *len) __attribute__ ((weak));
|
||||
extern int mtd_fixtrx(const char *mtd, size_t offset) __attribute__ ((weak));
|
||||
extern int mtd_fixseama(const char *mtd, size_t offset) __attribute__ ((weak));
|
||||
#endif /* __mtd_h */
|
||||
|
179
package/mtd/src/seama.c
Normal file
179
package/mtd/src/seama.c
Normal file
@ -0,0 +1,179 @@
|
||||
/*
|
||||
* seama.c
|
||||
*
|
||||
* Copyright (C) 2011-2012 Gabor Juhos <juhosg@openwrt.org>
|
||||
*
|
||||
* Based on the trx fixup code:
|
||||
* Copyright (C) 2005 Mike Baker
|
||||
* Copyright (C) 2008 Felix Fietkau <nbd@openwrt.org>
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <stddef.h>
|
||||
#include <unistd.h>
|
||||
#include <fcntl.h>
|
||||
#include <sys/mman.h>
|
||||
#include <sys/stat.h>
|
||||
#include <string.h>
|
||||
#include <errno.h>
|
||||
#include <arpa/inet.h>
|
||||
|
||||
#include <sys/ioctl.h>
|
||||
#include <mtd/mtd-user.h>
|
||||
#include "mtd.h"
|
||||
#include "seama.h"
|
||||
#include "md5.h"
|
||||
|
||||
#if __BYTE_ORDER == __BIG_ENDIAN
|
||||
#define STORE32_LE(X) ((((X) & 0x000000FF) << 24) | (((X) & 0x0000FF00) << 8) | (((X) & 0x00FF0000) >> 8) | (((X) & 0xFF000000) >> 24))
|
||||
#elif __BYTE_ORDER == __LITTLE_ENDIAN
|
||||
#define STORE32_LE(X) (X)
|
||||
#else
|
||||
#error unknown endianness!
|
||||
#endif
|
||||
|
||||
ssize_t pread(int fd, void *buf, size_t count, off_t offset);
|
||||
ssize_t pwrite(int fd, const void *buf, size_t count, off_t offset);
|
||||
|
||||
int
|
||||
seama_fix_md5(char *buf, size_t len)
|
||||
{
|
||||
struct seama_hdr *shdr;
|
||||
char *data;
|
||||
size_t msize;
|
||||
size_t isize;
|
||||
MD5_CTX ctx;
|
||||
unsigned char digest[16];
|
||||
int i;
|
||||
|
||||
if (len < sizeof(struct seama_hdr))
|
||||
return -1;
|
||||
|
||||
shdr = (struct seama_hdr *) buf;
|
||||
if (shdr->magic != htonl(SEAMA_MAGIC)) {
|
||||
fprintf(stderr, "no SEAMA header found\n");
|
||||
return -1;
|
||||
}
|
||||
|
||||
isize = ntohl(shdr->size);
|
||||
msize = ntohs(shdr->metasize);
|
||||
if (isize == 0) {
|
||||
/* the image contains no checksum */
|
||||
return -1;
|
||||
}
|
||||
|
||||
len -= sizeof(struct seama_hdr) + sizeof(digest) + msize;
|
||||
if (isize > len)
|
||||
isize = len;
|
||||
|
||||
data = buf + sizeof(struct seama_hdr) + sizeof(digest) + msize;
|
||||
|
||||
MD5_Init(&ctx);
|
||||
MD5_Update(&ctx, data, isize);
|
||||
MD5_Final(digest, &ctx);
|
||||
|
||||
if (!memcmp(digest, &buf[sizeof(struct seama_hdr)], sizeof(digest))) {
|
||||
if (quiet < 2)
|
||||
fprintf(stderr, "the header is fixed already\n");
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (quiet < 2) {
|
||||
fprintf(stderr, "new size:%u, new MD5: ", isize);
|
||||
for (i = 0; i < sizeof(digest); i++)
|
||||
fprintf(stderr, "%02x", digest[i]);
|
||||
|
||||
fprintf(stderr, "\n");
|
||||
}
|
||||
|
||||
/* update the size in the image */
|
||||
shdr->size = htonl(isize);
|
||||
|
||||
/* update the checksum in the image */
|
||||
for (i = 0; i < sizeof(digest); i++)
|
||||
buf[sizeof(struct seama_hdr) + i] = digest[i];
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int
|
||||
mtd_fixseama(const char *mtd, size_t offset)
|
||||
{
|
||||
int fd;
|
||||
char *buf;
|
||||
ssize_t res;
|
||||
size_t block_offset;
|
||||
|
||||
if (quiet < 2)
|
||||
fprintf(stderr, "Trying to fix SEAMA header in %s at 0x%x...\n",
|
||||
mtd, offset);
|
||||
|
||||
block_offset = offset & ~(erasesize - 1);
|
||||
offset -= block_offset;
|
||||
|
||||
fd = mtd_check_open(mtd);
|
||||
if(fd < 0) {
|
||||
fprintf(stderr, "Could not open mtd device: %s\n", mtd);
|
||||
exit(1);
|
||||
}
|
||||
|
||||
if (block_offset + erasesize > mtdsize) {
|
||||
fprintf(stderr, "Offset too large, device size 0x%x\n",
|
||||
mtdsize);
|
||||
exit(1);
|
||||
}
|
||||
|
||||
buf = malloc(mtdsize);
|
||||
if (!buf) {
|
||||
perror("malloc");
|
||||
exit(1);
|
||||
}
|
||||
|
||||
res = pread(fd, buf, mtdsize, block_offset);
|
||||
if (res != mtdsize) {
|
||||
perror("pread");
|
||||
exit(1);
|
||||
}
|
||||
|
||||
if (seama_fix_md5(buf, mtdsize))
|
||||
goto out;
|
||||
|
||||
if (mtd_erase_block(fd, block_offset)) {
|
||||
fprintf(stderr, "Can't erease block at 0x%x (%s)\n",
|
||||
block_offset, strerror(errno));
|
||||
exit(1);
|
||||
}
|
||||
|
||||
if (quiet < 2)
|
||||
fprintf(stderr, "Rewriting block at 0x%x\n", block_offset);
|
||||
|
||||
if (pwrite(fd, buf, erasesize, block_offset) != erasesize) {
|
||||
fprintf(stderr, "Error writing block (%s)\n", strerror(errno));
|
||||
exit(1);
|
||||
}
|
||||
|
||||
if (quiet < 2)
|
||||
fprintf(stderr, "Done.\n");
|
||||
|
||||
out:
|
||||
close (fd);
|
||||
sync();
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
108
package/mtd/src/seama.h
Normal file
108
package/mtd/src/seama.h
Normal file
@ -0,0 +1,108 @@
|
||||
/* vi: set sw=4 ts=4: */
|
||||
/*
|
||||
* (SEA)ttle i(MA)ge is the image which used in project seattle.
|
||||
*
|
||||
* Created by David Hsieh <david_hsieh@alphanetworks.com>
|
||||
* Copyright (C) 2008-2009 Alpha Networks, Inc.
|
||||
*
|
||||
* This file is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU Lesser General Public
|
||||
* License as published by the Free Software Foundation; either'
|
||||
* version 2.1 of the License, or (at your option) any later version.
|
||||
*
|
||||
* The GNU C Library 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
|
||||
* Lesser General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU Lesser General Public
|
||||
* License along with the GNU C Library; if not, write to the Free
|
||||
* Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
||||
* 02111-1307 USA.
|
||||
*/
|
||||
|
||||
#ifndef __SEAMA_HEADER_FILE__
|
||||
#define __SEAMA_HEADER_FILE__
|
||||
|
||||
#include <stdint.h>
|
||||
|
||||
#define SEAMA_MAGIC 0x5EA3A417
|
||||
|
||||
/*
|
||||
* SEAMA looks like the following map.
|
||||
* All the data of the header should be in network byte order.
|
||||
*
|
||||
* +-------------+-------------+------------
|
||||
* | SEAMA magic | ^
|
||||
* +-------------+-------------+ |
|
||||
* | reserved | meta size | |
|
||||
* +-------------+-------------+ header
|
||||
* | image size (0 bytes) | |
|
||||
* +-------------+-------------+ |
|
||||
* ~ Meta data ~ v
|
||||
* +-------------+-------------+------------
|
||||
* | SEAMA magic | ^ ^
|
||||
* +-------------+-------------+ | |
|
||||
* | reserved | meta size | | |
|
||||
* +-------------+-------------+ | |
|
||||
* | image size | | |
|
||||
* +-------------+-------------+ header |
|
||||
* | | | |
|
||||
* | 16 bytes of MD5 digest | | |
|
||||
* | | | |
|
||||
* | | | |
|
||||
* +-------------+-------------+ | |
|
||||
* ~ Meta data ~ v |
|
||||
* +-------------+-------------+------- |
|
||||
* | | |
|
||||
* | Image of the 1st entity | |
|
||||
* ~ ~ 1st entity
|
||||
* | | |
|
||||
* | | v
|
||||
* +-------------+-------------+-------------
|
||||
* | SEAMA magic | ^ ^
|
||||
* +-------------+-------------+ | |
|
||||
* | reserved | meta size | | |
|
||||
* +-------------+-------------+ | |
|
||||
* | image size | | |
|
||||
* +-------------+-------------+ header |
|
||||
* | | | |
|
||||
* | 16 bytes of MD5 digest | | |
|
||||
* | | | |
|
||||
* | | | |
|
||||
* +-------------+-------------+ | |
|
||||
* ~ Meta data ~ v |
|
||||
* +-------------+-------------+------- |
|
||||
* | | |
|
||||
* | Image of the 2nd entity | |
|
||||
* ~ ~ 2nd entity
|
||||
* | | |
|
||||
* | | v
|
||||
* +-------------+-------------+-------------
|
||||
*/
|
||||
|
||||
|
||||
/*
|
||||
* SEAMA header
|
||||
*
|
||||
* |<-------- 32 bits -------->|
|
||||
* +-------------+-------------+
|
||||
* | SEAMA magic |
|
||||
* +-------------+-------------+
|
||||
* | reserved | meta size |
|
||||
* +-------------+-------------+
|
||||
* | image size |
|
||||
* +-------------+-------------+
|
||||
*/
|
||||
/* seama header */
|
||||
typedef struct seama_hdr seamahdr_t;
|
||||
struct seama_hdr
|
||||
{
|
||||
uint32_t magic; /* should always be SEAMA_MAGIC. */
|
||||
uint16_t reserved; /* reserved for */
|
||||
uint16_t metasize; /* size of the META data */
|
||||
uint32_t size; /* size of the image */
|
||||
} __attribute__ ((packed));
|
||||
|
||||
|
||||
#endif
|
Loading…
Reference in New Issue
Block a user