diff options
Diffstat (limited to 'package/base-files/src/jffs2root.c')
| -rw-r--r-- | package/base-files/src/jffs2root.c | 133 | 
1 files changed, 0 insertions, 133 deletions
diff --git a/package/base-files/src/jffs2root.c b/package/base-files/src/jffs2root.c deleted file mode 100644 index 3562eb462..000000000 --- a/package/base-files/src/jffs2root.c +++ /dev/null @@ -1,133 +0,0 @@ -/* - * jffs2root.c - * - * Copyright (C) 2005 Mike Baker  - * - * 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. - * - * $Id$ - * - */ - -#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 <sys/ioctl.h> -#include "mtd.h" - -#define FILENAME "/dev/mtdblock/1" - -struct trx_header { -	unsigned magic;		/* "HDR0" */ -	unsigned len;		/* Length of file including header */ -	unsigned crc32;		/* 32-bit CRC from flag_version to end of file */ -	unsigned flag_version;	/* 0:15 flags, 16:31 version */ -	unsigned offsets[3];	/* Offsets of partitions from start of header */ -}; - -unsigned long *crc32; - -void init_crc32() -{ -	unsigned long crc; -	unsigned long poly = 0xEDB88320L; -	int n, bit; -	if ((crc32 = (unsigned long *) malloc(256 * sizeof(unsigned long))) == (void *)-1) { -		perror("malloc"); -		exit(1); -	} -	for (n = 0; n < 256; n++) { -	crc = (unsigned long) n; -	for (bit = 0; bit < 8; bit++) -		crc = (crc & 1) ? (poly ^ (crc >> 1)) : (crc >> 1); -	crc32[n] = crc; -	} -} - -unsigned int crc32buf(char *buf, size_t len) -{ -	unsigned int crc = 0xFFFFFFFF; -	for (; len; len--, buf++) -	crc = crc32[(crc ^ *buf) & 0xff] ^ (crc >> 8); -	return crc; -} - -int main(int argc, char **argv) -{ -	int fd; -	struct mtd_info_user mtdInfo; -	unsigned long len; -	struct trx_header *ptr; -	char *buf; -	 -	if (((fd = open(FILENAME, O_RDWR))	< 0) -			|| ((len = lseek(fd, 0, SEEK_END)) < 0) -			|| ((ptr = (struct trx_header *) mmap(0, len, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0)) == (void *) (-1)) -			|| (ptr->magic != 0x30524448)) { -		printf("Error reading trx info\n"); -		exit(-1); -	} -	close (fd); - -	if (((fd = open("/dev/mtd/1", O_RDWR))	< 0) -			|| (ioctl(fd, MEMGETINFO, &mtdInfo))) { -		fprintf(stderr, "Could not get MTD device info from %s\n", FILENAME); -		close(fd); -		exit(1); -	} -	close(fd); - -	if (argc > 1 && !strcmp(argv[1],"--move")) { -		if (ptr->offsets[2] >= ptr->len) { -			printf("Partition already moved outside trx\n"); -		} else { -			init_crc32(); -			ptr->offsets[2] +=	(mtdInfo.erasesize - 1); -			ptr->offsets[2] &= ~(mtdInfo.erasesize - 1); -			ptr->len = ptr->offsets[2]; -			ptr->crc32 = crc32buf((void *) &(ptr->flag_version), ptr->len - offsetof(struct trx_header, flag_version)); -			msync(ptr,sizeof(struct trx_header),MS_SYNC|MS_INVALIDATE); -			printf("Partition moved; please reboot\n"); -		} -	} else if (argc > 1 && !strcmp(argv[1], "--clean")) { -		buf = (char *) ptr; -		if (buf[ptr->offsets[1] - 1] == 0) { -			init_crc32(); -			buf[ptr->offsets[1] - 1] = 1; -			ptr->crc32 = crc32buf((void *) &(ptr->flag_version), ptr->len - offsetof(struct trx_header, flag_version)); -			msync(ptr,sizeof(struct trx_header),MS_SYNC|MS_INVALIDATE); -			printf("Partition marked as clean\n"); -		} -	} else { -		int x; -		printf(" erase: 0x%08x\n",mtdInfo.erasesize); -		printf("=== trx ===\n"); -		printf("mapped: 0x%08x\n", (unsigned)ptr); -		printf(" magic: 0x%08x\n", ptr->magic); -		printf("	 len: 0x%08x\n", ptr->len); -		printf("	 crc: 0x%08x\n", ptr->crc32); -		for (x = 0; x < 3; x++) -			printf(" offset[%d]: 0x%08x\n", x, ptr->offsets[x]); -	} - -	munmap((void *) ptr, len); -	return 0; -}  | 
