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AA: package/mtd: add option for fixing seama images

Backport of r33841.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/branches/attitude_adjustment@33870 3c298f89-4303-0410-b956-a3cf2f4a3e73
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commit 5477f59de6b83b561d3ffef82ec1ed6cf4a3a6c1 1 parent 4463c46
juhosg authored
View
6 package/mtd/Makefile
@@ -1,5 +1,5 @@
#
-# Copyright (C) 2006-2010 OpenWrt.org
+# Copyright (C) 2006-2012 OpenWrt.org
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
include $(INCLUDE_DIR)/kernel.mk
PKG_NAME:=mtd
-PKG_RELEASE:=18
+PKG_RELEASE:=18.1
PKG_BUILD_DIR := $(KERNEL_BUILD_DIR)/$(PKG_NAME)
STAMP_PREPARED := $(STAMP_PREPARED)_$(call confvar,CONFIG_MTD_REDBOOT_PARTS)
@@ -23,7 +23,7 @@ define Package/mtd
endef
define Package/mtd/description
- This package contains an utility useful to upgrade from other firmware or
+ This package contains an utility useful to upgrade from other firmware or
older OpenWrt releases.
endef
View
4 package/mtd/src/Makefile
@@ -2,10 +2,12 @@ CC = gcc
CFLAGS += -Wall
obj = mtd.o jffs2.o crc32.o
+obj.seama = seama.o md5.o
obj.ar71xx = trx.o
obj.brcm = trx.o
obj.brcm47xx = $(obj.brcm)
obj.brcm63xx = imagetag.o
+obj.ramips = $(obj.seama)
ifdef FIS_SUPPORT
obj += fis.o
@@ -13,4 +15,4 @@ endif
mtd: $(obj) $(obj.$(TARGET))
clean:
- rm -f *.o jffs2
+ rm -f *.o jffs2
View
307 package/mtd/src/md5.c
@@ -0,0 +1,307 @@
+
+
+/*
+ ***********************************************************************
+ ** md5.c -- the source code for MD5 routines **
+ ** RSA Data Security, Inc. MD5 Message-Digest Algorithm **
+ ** Created: 2/17/90 RLR **
+ ** Revised: 1/91 SRD,AJ,BSK,JT Reference C ver., 7/10 constant corr. **
+ ***********************************************************************
+ */
+
+/*
+ ***********************************************************************
+ ** Copyright (C) 1990, RSA Data Security, Inc. All rights reserved. **
+ ** **
+ ** 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. **
+ ** **
+ ** License is also granted to make and use derivative works **
+ ** provided that such works are identified as "derived from the RSA **
+ ** Data Security, Inc. MD5 Message-Digest Algorithm" in all **
+ ** material mentioning or referencing the derived work. **
+ ** **
+ ** RSA Data Security, Inc. makes no representations concerning **
+ ** either the merchantability of this software or the suitability **
+ ** of this software for any particular purpose. It is provided "as **
+ ** 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. **
+ ***********************************************************************
+ */
+
+#include <string.h>
+#include "md5.h"
+
+/*
+ ***********************************************************************
+ ** Message-digest routines: **
+ ** To form the message digest for a message M **
+ ** (1) Initialize a context buffer mdContext using MD5_Init **
+ ** (2) Call MD5_Update on mdContext and M **
+ ** (3) Call MD5_Final on mdContext **
+ ** The message digest is now in mdContext->digest[0...15] **
+ ***********************************************************************
+ */
+
+/* forward declaration */
+static void Transform ();
+
+static unsigned char PADDING[64] = {
+ 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+};
+
+/* F, G, H and I are basic MD5 functions */
+#define F(x, y, z) (((x) & (y)) | ((~x) & (z)))
+#define G(x, y, z) (((x) & (z)) | ((y) & (~z)))
+#define H(x, y, z) ((x) ^ (y) ^ (z))
+#define I(x, y, z) ((y) ^ ((x) | (~z)))
+
+/* ROTATE_LEFT rotates x left n bits */
+#define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n))))
+
+/* FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4 */
+/* Rotation is separate from addition to prevent recomputation */
+#define FF(a, b, c, d, x, s, ac) \
+ {(a) += F ((b), (c), (d)) + (x) + (UINT4)(ac); \
+ (a) = ROTATE_LEFT ((a), (s)); \
+ (a) += (b); \
+ }
+#define GG(a, b, c, d, x, s, ac) \
+ {(a) += G ((b), (c), (d)) + (x) + (UINT4)(ac); \
+ (a) = ROTATE_LEFT ((a), (s)); \
+ (a) += (b); \
+ }
+#define HH(a, b, c, d, x, s, ac) \
+ {(a) += H ((b), (c), (d)) + (x) + (UINT4)(ac); \
+ (a) = ROTATE_LEFT ((a), (s)); \
+ (a) += (b); \
+ }
+#define II(a, b, c, d, x, s, ac) \
+ {(a) += I ((b), (c), (d)) + (x) + (UINT4)(ac); \
+ (a) = ROTATE_LEFT ((a), (s)); \
+ (a) += (b); \
+ }
+
+#ifdef __STDC__
+#define UL(x) x##U
+#else
+#define UL(x) x
+#endif
+
+/* The routine MD5_Init initializes the message-digest context
+ mdContext. All fields are set to zero.
+ */
+void MD5_Init (mdContext)
+MD5_CTX *mdContext;
+{
+ mdContext->i[0] = mdContext->i[1] = (UINT4)0;
+
+ /* Load magic initialization constants.
+ */
+ mdContext->buf[0] = (UINT4)0x67452301;
+ mdContext->buf[1] = (UINT4)0xefcdab89;
+ mdContext->buf[2] = (UINT4)0x98badcfe;
+ mdContext->buf[3] = (UINT4)0x10325476;
+}
+
+/* The routine MD5Update updates the message-digest context to
+ account for the presence of each of the characters inBuf[0..inLen-1]
+ in the message whose digest is being computed.
+ */
+void MD5_Update (mdContext, inBuf, inLen)
+MD5_CTX *mdContext;
+unsigned char *inBuf;
+unsigned int inLen;
+{
+ UINT4 in[16];
+ int mdi;
+ unsigned int i, ii;
+
+ /* compute number of bytes mod 64 */
+ mdi = (int)((mdContext->i[0] >> 3) & 0x3F);
+
+ /* update number of bits */
+ if ((mdContext->i[0] + ((UINT4)inLen << 3)) < mdContext->i[0])
+ mdContext->i[1]++;
+ mdContext->i[0] += ((UINT4)inLen << 3);
+ mdContext->i[1] += ((UINT4)inLen >> 29);
+
+ while (inLen--) {
+ /* add new character to buffer, increment mdi */
+ mdContext->in[mdi++] = *inBuf++;
+
+ /* transform if necessary */
+ if (mdi == 0x40) {
+ for (i = 0, ii = 0; i < 16; i++, ii += 4)
+ in[i] = (((UINT4)mdContext->in[ii+3]) << 24) |
+ (((UINT4)mdContext->in[ii+2]) << 16) |
+ (((UINT4)mdContext->in[ii+1]) << 8) |
+ ((UINT4)mdContext->in[ii]);
+ Transform (mdContext->buf, in);
+ mdi = 0;
+ }
+ }
+}
+
+/* The routine MD5Final terminates the message-digest computation and
+ ends with the desired message digest in mdContext->digest[0...15].
+ */
+void MD5_Final (hash, mdContext)
+unsigned char hash[];
+MD5_CTX *mdContext;
+{
+ UINT4 in[16];
+ int mdi;
+ unsigned int i, ii;
+ unsigned int padLen;
+
+ /* save number of bits */
+ in[14] = mdContext->i[0];
+ in[15] = mdContext->i[1];
+
+ /* compute number of bytes mod 64 */
+ mdi = (int)((mdContext->i[0] >> 3) & 0x3F);
+
+ /* pad out to 56 mod 64 */
+ padLen = (mdi < 56) ? (56 - mdi) : (120 - mdi);
+ MD5_Update (mdContext, PADDING, padLen);
+
+ /* append length in bits and transform */
+ for (i = 0, ii = 0; i < 14; i++, ii += 4)
+ in[i] = (((UINT4)mdContext->in[ii+3]) << 24) |
+ (((UINT4)mdContext->in[ii+2]) << 16) |
+ (((UINT4)mdContext->in[ii+1]) << 8) |
+ ((UINT4)mdContext->in[ii]);
+ Transform (mdContext->buf, in);
+
+ /* store buffer in digest */
+ for (i = 0, ii = 0; i < 4; i++, ii += 4) {
+ mdContext->digest[ii] = (unsigned char)(mdContext->buf[i] & 0xFF);
+ mdContext->digest[ii+1] =
+ (unsigned char)((mdContext->buf[i] >> 8) & 0xFF);
+ mdContext->digest[ii+2] =
+ (unsigned char)((mdContext->buf[i] >> 16) & 0xFF);
+ mdContext->digest[ii+3] =
+ (unsigned char)((mdContext->buf[i] >> 24) & 0xFF);
+ }
+ memcpy(hash, mdContext->digest, 16);
+}
+
+/* Basic MD5 step. Transforms buf based on in.
+ */
+static void Transform (buf, in)
+UINT4 *buf;
+UINT4 *in;
+{
+ UINT4 a = buf[0], b = buf[1], c = buf[2], d = buf[3];
+
+ /* Round 1 */
+#define S11 7
+#define S12 12
+#define S13 17
+#define S14 22
+ FF ( a, b, c, d, in[ 0], S11, UL(3614090360)); /* 1 */
+ FF ( d, a, b, c, in[ 1], S12, UL(3905402710)); /* 2 */
+ FF ( c, d, a, b, in[ 2], S13, UL( 606105819)); /* 3 */
+ FF ( b, c, d, a, in[ 3], S14, UL(3250441966)); /* 4 */
+ FF ( a, b, c, d, in[ 4], S11, UL(4118548399)); /* 5 */
+ FF ( d, a, b, c, in[ 5], S12, UL(1200080426)); /* 6 */
+ FF ( c, d, a, b, in[ 6], S13, UL(2821735955)); /* 7 */
+ FF ( b, c, d, a, in[ 7], S14, UL(4249261313)); /* 8 */
+ FF ( a, b, c, d, in[ 8], S11, UL(1770035416)); /* 9 */
+ FF ( d, a, b, c, in[ 9], S12, UL(2336552879)); /* 10 */
+ FF ( c, d, a, b, in[10], S13, UL(4294925233)); /* 11 */
+ FF ( b, c, d, a, in[11], S14, UL(2304563134)); /* 12 */
+ FF ( a, b, c, d, in[12], S11, UL(1804603682)); /* 13 */
+ FF ( d, a, b, c, in[13], S12, UL(4254626195)); /* 14 */
+ FF ( c, d, a, b, in[14], S13, UL(2792965006)); /* 15 */
+ FF ( b, c, d, a, in[15], S14, UL(1236535329)); /* 16 */
+
+ /* Round 2 */
+#define S21 5
+#define S22 9
+#define S23 14
+#define S24 20
+ GG ( a, b, c, d, in[ 1], S21, UL(4129170786)); /* 17 */
+ GG ( d, a, b, c, in[ 6], S22, UL(3225465664)); /* 18 */
+ GG ( c, d, a, b, in[11], S23, UL( 643717713)); /* 19 */
+ GG ( b, c, d, a, in[ 0], S24, UL(3921069994)); /* 20 */
+ GG ( a, b, c, d, in[ 5], S21, UL(3593408605)); /* 21 */
+ GG ( d, a, b, c, in[10], S22, UL( 38016083)); /* 22 */
+ GG ( c, d, a, b, in[15], S23, UL(3634488961)); /* 23 */
+ GG ( b, c, d, a, in[ 4], S24, UL(3889429448)); /* 24 */
+ GG ( a, b, c, d, in[ 9], S21, UL( 568446438)); /* 25 */
+ GG ( d, a, b, c, in[14], S22, UL(3275163606)); /* 26 */
+ GG ( c, d, a, b, in[ 3], S23, UL(4107603335)); /* 27 */
+ GG ( b, c, d, a, in[ 8], S24, UL(1163531501)); /* 28 */
+ GG ( a, b, c, d, in[13], S21, UL(2850285829)); /* 29 */
+ GG ( d, a, b, c, in[ 2], S22, UL(4243563512)); /* 30 */
+ GG ( c, d, a, b, in[ 7], S23, UL(1735328473)); /* 31 */
+ GG ( b, c, d, a, in[12], S24, UL(2368359562)); /* 32 */
+
+ /* Round 3 */
+#define S31 4
+#define S32 11
+#define S33 16
+#define S34 23
+ HH ( a, b, c, d, in[ 5], S31, UL(4294588738)); /* 33 */
+ HH ( d, a, b, c, in[ 8], S32, UL(2272392833)); /* 34 */
+ HH ( c, d, a, b, in[11], S33, UL(1839030562)); /* 35 */
+ HH ( b, c, d, a, in[14], S34, UL(4259657740)); /* 36 */
+ HH ( a, b, c, d, in[ 1], S31, UL(2763975236)); /* 37 */
+ HH ( d, a, b, c, in[ 4], S32, UL(1272893353)); /* 38 */
+ HH ( c, d, a, b, in[ 7], S33, UL(4139469664)); /* 39 */
+ HH ( b, c, d, a, in[10], S34, UL(3200236656)); /* 40 */
+ HH ( a, b, c, d, in[13], S31, UL( 681279174)); /* 41 */
+ HH ( d, a, b, c, in[ 0], S32, UL(3936430074)); /* 42 */
+ HH ( c, d, a, b, in[ 3], S33, UL(3572445317)); /* 43 */
+ HH ( b, c, d, a, in[ 6], S34, UL( 76029189)); /* 44 */
+ HH ( a, b, c, d, in[ 9], S31, UL(3654602809)); /* 45 */
+ HH ( d, a, b, c, in[12], S32, UL(3873151461)); /* 46 */
+ HH ( c, d, a, b, in[15], S33, UL( 530742520)); /* 47 */
+ HH ( b, c, d, a, in[ 2], S34, UL(3299628645)); /* 48 */
+
+ /* Round 4 */
+#define S41 6
+#define S42 10
+#define S43 15
+#define S44 21
+ II ( a, b, c, d, in[ 0], S41, UL(4096336452)); /* 49 */
+ II ( d, a, b, c, in[ 7], S42, UL(1126891415)); /* 50 */
+ II ( c, d, a, b, in[14], S43, UL(2878612391)); /* 51 */
+ II ( b, c, d, a, in[ 5], S44, UL(4237533241)); /* 52 */
+ II ( a, b, c, d, in[12], S41, UL(1700485571)); /* 53 */
+ II ( d, a, b, c, in[ 3], S42, UL(2399980690)); /* 54 */
+ II ( c, d, a, b, in[10], S43, UL(4293915773)); /* 55 */
+ II ( b, c, d, a, in[ 1], S44, UL(2240044497)); /* 56 */
+ II ( a, b, c, d, in[ 8], S41, UL(1873313359)); /* 57 */
+ II ( d, a, b, c, in[15], S42, UL(4264355552)); /* 58 */
+ II ( c, d, a, b, in[ 6], S43, UL(2734768916)); /* 59 */
+ II ( b, c, d, a, in[13], S44, UL(1309151649)); /* 60 */
+ II ( a, b, c, d, in[ 4], S41, UL(4149444226)); /* 61 */
+ II ( d, a, b, c, in[11], S42, UL(3174756917)); /* 62 */
+ II ( c, d, a, b, in[ 2], S43, UL( 718787259)); /* 63 */
+ II ( b, c, d, a, in[ 9], S44, UL(3951481745)); /* 64 */
+
+ buf[0] += a;
+ buf[1] += b;
+ buf[2] += c;
+ buf[3] += d;
+}
+
+/*
+ ***********************************************************************
+ ** End of md5.c **
+ ******************************** (cut) ********************************
+ */
View
65 package/mtd/src/md5.h
@@ -0,0 +1,65 @@
+/*
+ ***********************************************************************
+ ** md5.h -- header file for implementation of MD5 **
+ ** RSA Data Security, Inc. MD5 Message-Digest Algorithm **
+ ** Created: 2/17/90 RLR **
+ ** Revised: 12/27/90 SRD,AJ,BSK,JT Reference C version **
+ ** Revised (for MD5): RLR 4/27/91 **
+ ** -- G modified to have y&~z instead of y&z **
+ ** -- FF, GG, HH modified to add in last register done **
+ ** -- Access pattern: round 2 works mod 5, round 3 works mod 3 **
+ ** -- distinct additive constant for each step **
+ ** -- round 4 added, working mod 7 **
+ ***********************************************************************
+ */
+
+/*
+ ***********************************************************************
+ ** Copyright (C) 1990, RSA Data Security, Inc. All rights reserved. **
+ ** **
+ ** 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. **
+ ** **
+ ** License is also granted to make and use derivative works **
+ ** provided that such works are identified as "derived from the RSA **
+ ** Data Security, Inc. MD5 Message-Digest Algorithm" in all **
+ ** material mentioning or referencing the derived work. **
+ ** **
+ ** RSA Data Security, Inc. makes no representations concerning **
+ ** either the merchantability of this software or the suitability **
+ ** of this software for any particular purpose. It is provided "as **
+ ** 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__ */
View
12 package/mtd/src/mtd.c
@@ -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;
}
View
1  package/mtd/src/mtd.h
@@ -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 */
View
179 package/mtd/src/seama.c
@@ -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;
+}
+
View
108 package/mtd/src/seama.h
@@ -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
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