--- /dev/null
+/*
+ * YAFFS: Yet another FFS. A NAND-flash specific file system.
+ *
+ * makeyaffsimage.c
+ *
+ * Makes a YAFFS file system image that can be used to load up a file system.
+ *
+ * Copyright (C) 2002 Aleph One Ltd.
+ * for Toby Churchill Ltd and Brightstar Engineering
+ *
+ * Created by Charles Manning <charles@aleph1.co.uk>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ *
+ * Nick Bane modifications flagged NCB
+ *
+ * Endian handling patches by James Ng.
+ *
+ *
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <fcntl.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <dirent.h>
+#include <string.h>
+#include <unistd.h>
+#include "yaffs_ecc.h"
+#include "yaffs_guts.h"
+
+
+#define MAX_OBJECTS 10000
+
+const char * mkyaffsimage_c_version = "$Id: mkyaffsimage.c,v 1.7 2003/07/16 03:00:48 charles Exp $";
+
+
+typedef struct
+{
+ dev_t dev;
+ ino_t ino;
+ int obj;
+} objItem;
+
+
+static objItem obj_list[MAX_OBJECTS];
+static int n_obj = 0;
+static int obj_id = YAFFS_NOBJECT_BUCKETS + 1;
+
+static int nObjects, nDirectories, nPages;
+
+static int outFile;
+
+static int error;
+
+static int convert_endian = 0;
+
+static int obj_compare(const void *a, const void * b)
+{
+ objItem *oa, *ob;
+
+ oa = (objItem *)a;
+ ob = (objItem *)b;
+
+ if(oa->dev < ob->dev) return -1;
+ if(oa->dev > ob->dev) return 1;
+ if(oa->ino < ob->ino) return -1;
+ if(oa->ino > ob->ino) return 1;
+
+ return 0;
+}
+
+
+static void add_obj_to_list(dev_t dev, ino_t ino, int obj)
+{
+ if(n_obj < MAX_OBJECTS)
+ {
+ obj_list[n_obj].dev = dev;
+ obj_list[n_obj].ino = ino;
+ obj_list[n_obj].obj = obj;
+ n_obj++;
+ qsort(obj_list,n_obj,sizeof(objItem),obj_compare);
+
+ }
+ else
+ {
+ // oops! not enough space in the object array
+ fprintf(stderr,"Not enough space in object array\n");
+ exit(2);
+ }
+}
+
+
+static int find_obj_in_list(dev_t dev, ino_t ino)
+{
+ objItem *i = NULL;
+ objItem test;
+
+ test.dev = dev;
+ test.ino = ino;
+
+ if(n_obj > 0)
+ {
+ i = bsearch(&test,obj_list,n_obj,sizeof(objItem),obj_compare);
+ }
+
+ if(i)
+ {
+ return i->obj;
+ }
+ return -1;
+}
+
+// NCB added 10/9/2002
+static __u16 yaffs_CalcNameSum(const char *name)
+{
+ __u16 sum = 0;
+ __u16 i = 1;
+
+ __u8 *bname = (__u8 *)name;
+
+ while (*bname)
+ {
+ sum += (*bname) * i;
+ i++;
+ bname++;
+ }
+ return sum;
+}
+
+
+static void yaffs_CalcECC(const __u8 *data, yaffs_Spare *spare)
+{
+ yaffs_ECCCalculate(data , spare->ecc1);
+ yaffs_ECCCalculate(&data[256] , spare->ecc2);
+}
+
+static void yaffs_CalcTagsECC(yaffs_Tags *tags)
+{
+ // Todo don't do anything yet. Need to calculate ecc
+ unsigned char *b = ((yaffs_TagsUnion *)tags)->asBytes;
+ unsigned i,j;
+ unsigned ecc = 0;
+ unsigned bit = 0;
+
+ // Clear ECC fields
+ if (!convert_endian)
+ {
+ tags->ecc = 0;
+ }
+ else
+ {
+ // Because we're in "munged tag" mode, we have to clear it manually
+ b[6] &= 0xC0;
+ b[7] &= 0x03;
+ }
+
+ for(i = 0; i < 8; i++)
+ {
+// NCB modified 20-9-02 for(j = 1; j &0x7f; j<<=1)
+ for(j = 1; j &0xff; j<<=1)
+ {
+ bit++;
+ if(b[i] & j)
+ {
+ ecc ^= bit;
+ }
+ }
+ }
+
+ // Write out ECC
+ if (!convert_endian)
+ {
+ tags->ecc = ecc;
+ }
+ else
+ {
+ // We have to munge the ECC again.
+ b[6] |= ((ecc >> 6) & 0x3F);
+ b[7] |= ((ecc & 0x3F) << 2);
+ }
+}
+static void yaffs_LoadTagsIntoSpare(yaffs_Spare *sparePtr, yaffs_Tags *tagsPtr)
+{
+ yaffs_TagsUnion *tu = (yaffs_TagsUnion *)tagsPtr;
+
+ //yaffs_CalcTagsECC(tagsPtr);
+
+ sparePtr->tagByte0 = tu->asBytes[0];
+ sparePtr->tagByte1 = tu->asBytes[1];
+ sparePtr->tagByte2 = tu->asBytes[2];
+ sparePtr->tagByte3 = tu->asBytes[3];
+ sparePtr->tagByte4 = tu->asBytes[4];
+ sparePtr->tagByte5 = tu->asBytes[5];
+ sparePtr->tagByte6 = tu->asBytes[6];
+ sparePtr->tagByte7 = tu->asBytes[7];
+}
+
+/* This little function converts a little endian tag to a big endian tag.
+ * NOTE: The tag is not usable after this other than calculating the CRC
+ * with.
+ */
+static void little_to_big_endian(yaffs_Tags *tagsPtr)
+{
+ yaffs_TagsUnion * tags = (yaffs_TagsUnion* )tagsPtr; // Work in bytes.
+ yaffs_TagsUnion temp;
+
+ memset(&temp, 0, sizeof(temp));
+ // Ick, I hate magic numbers.
+ temp.asBytes[0] = ((tags->asBytes[2] & 0x0F) << 4) | ((tags->asBytes[1] & 0xF0) >> 4);
+ temp.asBytes[1] = ((tags->asBytes[1] & 0x0F) << 4) | ((tags->asBytes[0] & 0xF0) >> 4);
+ temp.asBytes[2] = ((tags->asBytes[0] & 0x0F) << 4) | ((tags->asBytes[2] & 0x30) >> 2) | ((tags->asBytes[3] & 0xC0) >> 6);
+ temp.asBytes[3] = ((tags->asBytes[3] & 0x3F) << 2) | ((tags->asBytes[2] & 0xC0) >> 6);
+ temp.asBytes[4] = ((tags->asBytes[6] & 0x03) << 6) | ((tags->asBytes[5] & 0xFC) >> 2);
+ temp.asBytes[5] = ((tags->asBytes[5] & 0x03) << 6) | ((tags->asBytes[4] & 0xFC) >> 2);
+ temp.asBytes[6] = ((tags->asBytes[4] & 0x03) << 6) | (tags->asBytes[7] & 0x3F);
+ temp.asBytes[7] = (tags->asBytes[6] & 0xFC) | ((tags->asBytes[7] & 0xC0) >> 6);
+
+ // Now copy it back.
+ tags->asBytes[0] = temp.asBytes[0];
+ tags->asBytes[1] = temp.asBytes[1];
+ tags->asBytes[2] = temp.asBytes[2];
+ tags->asBytes[3] = temp.asBytes[3];
+ tags->asBytes[4] = temp.asBytes[4];
+ tags->asBytes[5] = temp.asBytes[5];
+ tags->asBytes[6] = temp.asBytes[6];
+ tags->asBytes[7] = temp.asBytes[7];
+}
+
+static int write_chunk(__u8 *data, __u32 objId, __u32 chunkId, __u32 nBytes)
+{
+ yaffs_Tags t;
+ yaffs_Spare s;
+
+ error = write(outFile,data,512);
+ if(error < 0) return error;
+
+ memset(&t,0xff,sizeof (yaffs_Tags));
+ memset(&s,0xff,sizeof (yaffs_Spare));
+
+ t.chunkId = chunkId;
+ t.serialNumber = 0;
+ t.byteCount = nBytes;
+ t.objectId = objId;
+
+ if (convert_endian)
+ {
+ little_to_big_endian(&t);
+ }
+
+ yaffs_CalcTagsECC(&t);
+ yaffs_LoadTagsIntoSpare(&s,&t);
+ yaffs_CalcECC(data,&s);
+
+ nPages++;
+
+ return write(outFile,&s,sizeof(yaffs_Spare));
+
+}
+
+#define SWAP32(x) ((((x) & 0x000000FF) << 24) | \
+ (((x) & 0x0000FF00) << 8 ) | \
+ (((x) & 0x00FF0000) >> 8 ) | \
+ (((x) & 0xFF000000) >> 24))
+
+#define SWAP16(x) ((((x) & 0x00FF) << 8) | \
+ (((x) & 0xFF00) >> 8))
+
+// This one is easier, since the types are more standard. No funky shifts here.
+static void object_header_little_to_big_endian(yaffs_ObjectHeader* oh)
+{
+ oh->type = SWAP32(oh->type); // GCC makes enums 32 bits.
+ oh->parentObjectId = SWAP32(oh->parentObjectId); // int
+ oh->sum__NoLongerUsed = SWAP16(oh->sum__NoLongerUsed); // __u16 - Not used, but done for completeness.
+ // name = skip. Char array. Not swapped.
+ oh->yst_mode = SWAP32(oh->yst_mode);
+#ifdef CONFIG_YAFFS_WINCE // WinCE doesn't implement this, but we need to just in case.
+ // In fact, WinCE would be *THE* place where this would be an issue!
+ oh->notForWinCE[0] = SWAP32(oh->notForWinCE[0]);
+ oh->notForWinCE[1] = SWAP32(oh->notForWinCE[1]);
+ oh->notForWinCE[2] = SWAP32(oh->notForWinCE[2]);
+ oh->notForWinCE[3] = SWAP32(oh->notForWinCE[3]);
+ oh->notForWinCE[4] = SWAP32(oh->notForWinCE[4]);
+#else
+ // Regular POSIX.
+ oh->yst_uid = SWAP32(oh->yst_uid);
+ oh->yst_gid = SWAP32(oh->yst_gid);
+ oh->yst_atime = SWAP32(oh->yst_atime);
+ oh->yst_mtime = SWAP32(oh->yst_mtime);
+ oh->yst_ctime = SWAP32(oh->yst_ctime);
+#endif
+
+ oh->fileSize = SWAP32(oh->fileSize); // Aiee. An int... signed, at that!
+ oh->equivalentObjectId = SWAP32(oh->equivalentObjectId);
+ // alias - char array.
+ oh->yst_rdev = SWAP32(oh->yst_rdev);
+
+#ifdef CONFIG_YAFFS_WINCE
+ oh->win_ctime[0] = SWAP32(oh->win_ctime[0]);
+ oh->win_ctime[1] = SWAP32(oh->win_ctime[1]);
+ oh->win_atime[0] = SWAP32(oh->win_atime[0]);
+ oh->win_atime[1] = SWAP32(oh->win_atime[1]);
+ oh->win_mtime[0] = SWAP32(oh->win_mtime[0]);
+ oh->win_mtime[1] = SWAP32(oh->win_mtime[1]);
+ oh->roomToGrow[0] = SWAP32(oh->roomToGrow[0]);
+ oh->roomToGrow[1] = SWAP32(oh->roomToGrow[1]);
+ oh->roomToGrow[2] = SWAP32(oh->roomToGrow[2]);
+ oh->roomToGrow[3] = SWAP32(oh->roomToGrow[3]);
+ oh->roomToGrow[4] = SWAP32(oh->roomToGrow[4]);
+ oh->roomToGrow[5] = SWAP32(oh->roomToGrow[5]);
+#else
+ oh->roomToGrow[0] = SWAP32(oh->roomToGrow[0]);
+ oh->roomToGrow[1] = SWAP32(oh->roomToGrow[1]);
+ oh->roomToGrow[2] = SWAP32(oh->roomToGrow[2]);
+ oh->roomToGrow[3] = SWAP32(oh->roomToGrow[3]);
+ oh->roomToGrow[4] = SWAP32(oh->roomToGrow[4]);
+ oh->roomToGrow[5] = SWAP32(oh->roomToGrow[5]);
+ oh->roomToGrow[6] = SWAP32(oh->roomToGrow[6]);
+ oh->roomToGrow[7] = SWAP32(oh->roomToGrow[7]);
+ oh->roomToGrow[8] = SWAP32(oh->roomToGrow[8]);
+ oh->roomToGrow[9] = SWAP32(oh->roomToGrow[9]);
+ oh->roomToGrow[10] = SWAP32(oh->roomToGrow[10]);
+ oh->roomToGrow[11] = SWAP32(oh->roomToGrow[11]);
+#endif
+}
+
+static int write_object_header(int objId, yaffs_ObjectType t, struct stat *s, int parent, const char *name, int equivalentObj, const char * alias)
+{
+ __u8 bytes[512];
+
+
+ yaffs_ObjectHeader *oh = (yaffs_ObjectHeader *)bytes;
+
+ memset(bytes,0xff,512);
+
+ oh->type = t;
+
+ oh->parentObjectId = parent;
+
+ strncpy(oh->name,name,YAFFS_MAX_NAME_LENGTH);
+
+
+ if(t != YAFFS_OBJECT_TYPE_HARDLINK)
+ {
+ oh->yst_mode = s->st_mode;
+ oh->yst_uid = s->st_uid;
+// NCB 12/9/02 oh->yst_gid = s->yst_uid;
+ oh->yst_gid = s->st_gid;
+ oh->yst_atime = s->st_atime;
+ oh->yst_mtime = s->st_mtime;
+ oh->yst_ctime = s->st_ctime;
+ oh->yst_rdev = s->st_rdev;
+ }
+
+ if(t == YAFFS_OBJECT_TYPE_FILE)
+ {
+ oh->fileSize = s->st_size;
+ }
+
+ if(t == YAFFS_OBJECT_TYPE_HARDLINK)
+ {
+ oh->equivalentObjectId = equivalentObj;
+ }
+
+ if(t == YAFFS_OBJECT_TYPE_SYMLINK)
+ {
+ strncpy(oh->alias,alias,YAFFS_MAX_ALIAS_LENGTH);
+ }
+
+ if (convert_endian)
+ {
+ object_header_little_to_big_endian(oh);
+ }
+
+ return write_chunk(bytes,objId,0,0xffff);
+
+}
+
+
+static int process_directory(int parent, const char *path)
+{
+
+ DIR *dir;
+ struct dirent *entry;
+
+ nDirectories++;
+
+ dir = opendir(path);
+
+ if(dir)
+ {
+ while((entry = readdir(dir)) != NULL)
+ {
+
+ /* Ignore . and .. */
+ if(strcmp(entry->d_name,".") &&
+ strcmp(entry->d_name,".."))
+ {
+ char full_name[500];
+ struct stat stats;
+ int equivalentObj;
+ int newObj;
+
+ sprintf(full_name,"%s/%s",path,entry->d_name);
+
+ lstat(full_name,&stats);
+
+ if(S_ISLNK(stats.st_mode) ||
+ S_ISREG(stats.st_mode) ||
+ S_ISDIR(stats.st_mode) ||
+ S_ISFIFO(stats.st_mode) ||
+ S_ISBLK(stats.st_mode) ||
+ S_ISCHR(stats.st_mode) ||
+ S_ISSOCK(stats.st_mode))
+ {
+
+ newObj = obj_id++;
+ nObjects++;
+
+ printf("Object %d, %s is a ",newObj,full_name);
+
+ /* We're going to create an object for it */
+ if((equivalentObj = find_obj_in_list(stats.st_dev, stats.st_ino)) > 0)
+ {
+ /* we need to make a hard link */
+ printf("hard link to object %d\n",equivalentObj);
+ error = write_object_header(newObj, YAFFS_OBJECT_TYPE_HARDLINK, &stats, parent, entry->d_name, equivalentObj, NULL);
+ }
+ else
+ {
+
+ add_obj_to_list(stats.st_dev,stats.st_ino,newObj);
+
+ if(S_ISLNK(stats.st_mode))
+ {
+
+ char symname[500];
+
+ memset(symname,0, sizeof(symname));
+
+ readlink(full_name,symname,sizeof(symname) -1);
+
+ printf("symlink to \"%s\"\n",symname);
+ error = write_object_header(newObj, YAFFS_OBJECT_TYPE_SYMLINK, &stats, parent, entry->d_name, -1, symname);
+
+ }
+ else if(S_ISREG(stats.st_mode))
+ {
+ printf("file, ");
+ error = write_object_header(newObj, YAFFS_OBJECT_TYPE_FILE, &stats, parent, entry->d_name, -1, NULL);
+
+ if(error >= 0)
+ {
+ int h;
+ __u8 bytes[512];
+ int nBytes;
+ int chunk = 0;
+
+ h = open(full_name,O_RDONLY);
+ if(h >= 0)
+ {
+ memset(bytes,0xff,512);
+ while((nBytes = read(h,bytes,512)) > 0)
+ {
+ chunk++;
+ write_chunk(bytes,newObj,chunk,nBytes);
+ memset(bytes,0xff,512);
+ }
+ if(nBytes < 0)
+ error = nBytes;
+
+ printf("%d data chunks written\n",chunk);
+ }
+ else
+ {
+ perror("Error opening file");
+ }
+ close(h);
+
+ }
+
+ }
+ else if(S_ISSOCK(stats.st_mode))
+ {
+ printf("socket\n");
+ error = write_object_header(newObj, YAFFS_OBJECT_TYPE_SPECIAL, &stats, parent, entry->d_name, -1, NULL);
+ }
+ else if(S_ISFIFO(stats.st_mode))
+ {
+ printf("fifo\n");
+ error = write_object_header(newObj, YAFFS_OBJECT_TYPE_SPECIAL, &stats, parent, entry->d_name, -1, NULL);
+ }
+ else if(S_ISCHR(stats.st_mode))
+ {
+ printf("character device\n");
+ error = write_object_header(newObj, YAFFS_OBJECT_TYPE_SPECIAL, &stats, parent, entry->d_name, -1, NULL);
+ }
+ else if(S_ISBLK(stats.st_mode))
+ {
+ printf("block device\n");
+ error = write_object_header(newObj, YAFFS_OBJECT_TYPE_SPECIAL, &stats, parent, entry->d_name, -1, NULL);
+ }
+ else if(S_ISDIR(stats.st_mode))
+ {
+ printf("directory\n");
+ error = write_object_header(newObj, YAFFS_OBJECT_TYPE_DIRECTORY, &stats, parent, entry->d_name, -1, NULL);
+// NCB modified 10/9/2001 process_directory(1,full_name);
+ process_directory(newObj,full_name);
+ }
+ }
+ }
+ else
+ {
+ printf(" we don't handle this type\n");
+ }
+ }
+ }
+ }
+
+ return 0;
+
+}
+
+
+int main(int argc, char *argv[])
+{
+ struct stat stats;
+
+ printf("mkyaffsimage: image building tool for YAFFS built "__DATE__"\n");
+
+ if(argc <= 3)
+ {
+ printf("usage: mkyaffsimage dir image_file [convert]\n");
+ printf(" dir the directory tree to be converted\n");
+ printf(" image_file the output file to hold the image\n");
+ printf(" 'convert' produce a big-endian image from a little-endian machine\n");
+ exit(1);
+ }
+
+ if ((argc == 4) && (!strncmp(argv[3], "convert", strlen("convert"))))
+ {
+ convert_endian = 1;
+ }
+
+ if(stat(argv[1],&stats) < 0)
+ {
+ printf("Could not stat %s\n",argv[1]);
+ exit(1);
+ }
+
+ if(!S_ISDIR(stats.st_mode))
+ {
+ printf(" %s is not a directory\n",argv[1]);
+ exit(1);
+ }
+
+ outFile = open(argv[2],O_CREAT | O_TRUNC | O_WRONLY, S_IREAD | S_IWRITE);
+
+
+ if(outFile < 0)
+ {
+ printf("Could not open output file %s\n",argv[2]);
+ exit(1);
+ }
+
+ printf("Processing directory %s into image file %s\n",argv[1],argv[2]);
+ error = write_object_header(1, YAFFS_OBJECT_TYPE_DIRECTORY, &stats, 1,"", -1, NULL);
+ if(error)
+ error = process_directory(YAFFS_OBJECTID_ROOT,argv[1]);
+
+ close(outFile);
+
+ if(error < 0)
+ {
+ perror("operation incomplete");
+ exit(1);
+ }
+ else
+ {
+ printf("Operation complete.\n"
+ "%d objects in %d directories\n"
+ "%d NAND pages\n",nObjects, nDirectories, nPages);
+ }
+
+ close(outFile);
+
+ exit(0);
+}
+
projects / yaffs2.git / commitdiff