From: charles Date: Wed, 2 Nov 2005 06:45:24 +0000 (+0000) Subject: Add first cut mkyaffs2image util X-Git-Tag: pre-name-change~391 X-Git-Url: http://www.aleph1.co.uk/gitweb/?p=yaffs2.git;a=commitdiff_plain;h=afa20b9f76da4dfb1a0759ffdbedf61933f7d139 Add first cut mkyaffs2image util --- diff --git a/utils/Makefile b/utils/Makefile new file mode 100644 index 0000000..5c1ee41 --- /dev/null +++ b/utils/Makefile @@ -0,0 +1,46 @@ +#Makefile for mkyaffs +# +# NB this is not yet suitable for putting into the kernel tree. +# YAFFS: Yet another FFS. A NAND-flash specific file system. +# +# Copyright (C) 2002 Aleph One Ltd. +# for Toby Churchill Ltd and Brightstar Engineering +# +# Created by Charles Manning +# +# 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. + +## Change or override KERNELDIR to your kernel + +#KERNELDIR = /usr/src/kernel-headers-2.4.18 + +CFLAGS = -I/usr/include -I.. -O2 -Wall -DCONFIG_YAFFS_UTIL +CFLAGS+= -Wshadow -Wpointer-arith -Wwrite-strings -Wstrict-prototypes -Wmissing-declarations +CFLAGS+= -Wmissing-prototypes -Wredundant-decls -Wnested-externs -Winline + +## Change if you are using a cross-compiler +MAKETOOLS = + +CC=$(MAKETOOLS)gcc + +MKYAFFS2SOURCES = mkyaffs2image.c +MKYAFFS2LINKS = yaffs_ecc.c yaffs_packedtags2.c yaffs_tagsvalidity.c + +MKYAFFS2IMAGEOBJS = $(MKYAFFS2SOURCES:.c=.o) $(MKYAFFS2LINKS:.c=.o) + +all: mkyaffs2image + +$(MKYAFFS2IMAGEOBJS): %.o: %.c + $(CC) -c $(CFLAGS) $< -o $@ + +mkyaffs2image: $(MKYAFFS2IMAGEOBJS) + $(CC) -o $@ $(MKYAFFS2IMAGEOBJS) + +$(MKYAFFS2LINKS): + ln -s ../$@ $@ + + +clean: + rm -f $(MKYAFFS2IMAGEOBJS) core diff --git a/utils/mkyaffs2image.c b/utils/mkyaffs2image.c new file mode 100644 index 0000000..7649492 --- /dev/null +++ b/utils/mkyaffs2image.c @@ -0,0 +1,522 @@ +/* + * YAFFS: Yet another FFS. A NAND-flash specific file system. + * + * makeyaffsimage.c + * + * Makes a YAFFS file system image that can be used to load up a file system. + * + * Copyright (C) 2002 Aleph One Ltd. + * for Toby Churchill Ltd and Brightstar Engineering + * + * Created by Charles Manning + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * + * Nick Bane modifications flagged NCB + * + * Endian handling patches by James Ng. + * + * mkyaffs2image hacks by NCB + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include "yaffs_ecc.h" +#include "yaffs_guts.h" + +#include "yaffs_tagsvalidity.h" +#include "yaffs_packedtags2.h" + +unsigned yaffs_traceMask=0; + +#define MAX_OBJECTS 10000 + +#define chunkSize 2048 +#define spareSize 64 + +const char * mkyaffsimage_c_version = "$Id: mkyaffs2image.c,v 1.1 2005-11-02 06:45:24 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; +} + +/* 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) +{ +#if 0 // FIXME NCB + 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]; +#endif +} + +static int write_chunk(__u8 *data, __u32 objId, __u32 chunkId, __u32 nBytes) +{ + yaffs_ExtendedTags t; + yaffs_PackedTags2 pt; + + error = write(outFile,data,chunkSize); + if(error < 0) return error; + + yaffs_InitialiseTags(&t); + + t.chunkId = chunkId; +// t.serialNumber = 0; + t.serialNumber = 1; // **CHECK** + t.byteCount = nBytes; + t.objectId = objId; + + t.sequenceNumber = YAFFS_LOWEST_SEQUENCE_NUMBER; + +// added NCB **CHECK** + t.chunkUsed = 1; + + if (convert_endian) + { + little_to_big_endian(&t); + } + + nPages++; + + yaffs_PackTags2(&pt,&t); + +// return write(outFile,&pt,sizeof(yaffs_PackedTags2)); + return write(outFile,&pt,spareSize); + +} + +#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[chunkSize]; + + + yaffs_ObjectHeader *oh = (yaffs_ObjectHeader *)bytes; + + memset(bytes,0xff,sizeof(bytes)); + + 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[chunkSize]; + int nBytes; + int chunk = 0; + + h = open(full_name,O_RDONLY); + if(h >= 0) + { + memset(bytes,0xff,sizeof(bytes)); + while((nBytes = read(h,bytes,sizeof(bytes))) > 0) + { + chunk++; + write_chunk(bytes,newObj,chunk,nBytes); + memset(bytes,0xff,sizeof(bytes)); + } + 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("mkyaffs2image: image building tool for YAFFS2 built "__DATE__"\n"); + + if(argc <= 3) + { + printf("usage: mkyaffs2image 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); +} +