From d37a8552b4b6f362d908dc39cb3a28d018d8edc9 Mon Sep 17 00:00:00 2001
From: nbd <nbd@3c298f89-4303-0410-b956-a3cf2f4a3e73>
Date: Sat, 22 Oct 2005 19:51:51 +0000
Subject: [PATCH] add jffs2root from whiterussian/
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@2255 3c298f89-4303-0410-b956-a3cf2f4a3e73
---
openwrt/target/linux/package/openwrt/Makefile | 2 +-
.../target/linux/package/openwrt/jffs2root.c | 134 ++++++++++--------
2 files changed, 73 insertions(+), 63 deletions(-)
diff --git a/openwrt/target/linux/package/openwrt/Makefile b/openwrt/target/linux/package/openwrt/Makefile
index 72c87044a..994ce5338 100644
--- a/openwrt/target/linux/package/openwrt/Makefile
+++ b/openwrt/target/linux/package/openwrt/Makefile
@@ -3,7 +3,7 @@
include $(TOPDIR)/rules.mk
PKG_NAME := base-files-arch
-PKG_RELEASE := 1
+PKG_RELEASE := 2
PKG_BUILD_DIR := $(BUILD_DIR)/$(PKG_NAME)
include $(TOPDIR)/package/rules.mk
diff --git a/openwrt/target/linux/package/openwrt/jffs2root.c b/openwrt/target/linux/package/openwrt/jffs2root.c
index 36b928ff4..14662fc94 100644
--- a/openwrt/target/linux/package/openwrt/jffs2root.c
+++ b/openwrt/target/linux/package/openwrt/jffs2root.c
@@ -36,88 +36,98 @@
#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 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++) {
+ 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);
+ 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++)
+ unsigned int crc = 0xFFFFFFFF;
+ for (; len; len--, buf++)
crc = crc32[(crc ^ *buf) & 0xff] ^ (crc >> 8);
- return crc;
+ return crc;
}
int main(int argc, char **argv)
{
- int fd;
- struct mtd_info_user mtdInfo;
- unsigned long len;
- struct trx_header *ptr;
+ 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(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 (((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 {
- 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]);
- }
+ 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;
+ munmap((void *) ptr, len);
+ return 0;
}
--
2.20.1