add jffs2root from whiterussian/

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

diff --git a/openwrt/target/linux/package/openwrt/Makefile b/openwrt/target/linux/package/openwrt/Makefile
index 72c8704..994ce53 100644 (file)
--- 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 36b928f..14662fc 100644 (file)
--- 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;
 }