add jffs2root from whiterussian/

git-svn-id: svn://svn.openwrt.org/openwrt/trunk/openwrt@2255 3c298f89-4303-0410-b956-a3cf2f4a3e73

2 files changed, 73 insertions, 63 deletions

diff --git a/target/linux/package/openwrt/Makefile b/target/linux/package/openwrt/Makefile
index 72c87044ad..994ce53388 100644
--- a/target/linux/package/openwrt/Makefile
+++ b/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/target/linux/package/openwrt/jffs2root.c b/target/linux/package/openwrt/jffs2root.c
index 36b928ff46..14662fc945 100644
--- a/target/linux/package/openwrt/jffs2root.c
+++ b/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;
 }