X-Git-Url: http://www.aleph1.co.uk/gitweb/?p=yaffs%2F.git;a=blobdiff_plain;f=yaffs_guts.c;h=87fa7a99d2e3ff82aadce48b6b059d14971db519;hp=5784d7956cc63d008c4df3045968e0839c90f70a;hb=a2c93fd7650b6b3138948e1a78e401c3824862d4;hpb=64a12f248950e23dd994ff29fd090480e0921930 diff --git a/yaffs_guts.c b/yaffs_guts.c index 5784d79..87fa7a9 100644 --- a/yaffs_guts.c +++ b/yaffs_guts.c @@ -14,7 +14,7 @@ */ //yaffs_guts.c -const char *yaffs_guts_c_version="$Id: yaffs_guts.c,v 1.25 2003-05-20 22:30:35 charles Exp $"; +const char *yaffs_guts_c_version="$Id: yaffs_guts.c,v 1.40 2005-04-05 03:45:40 charles Exp $"; #include "yportenv.h" @@ -782,11 +782,16 @@ static void yaffs_FreeTnode(yaffs_Device*dev, yaffs_Tnode *tn) static void yaffs_DeinitialiseTnodes(yaffs_Device*dev) { // Free the list of allocated tnodes - + yaffs_TnodeList *tmp; + while(dev->allocatedTnodeList) { + tmp = dev->allocatedTnodeList->next; + YFREE(dev->allocatedTnodeList->tnodes); - dev->allocatedTnodeList = dev->allocatedTnodeList->next; + YFREE(dev->allocatedTnodeList); + dev->allocatedTnodeList = tmp; + } dev->freeTnodes = NULL; @@ -1080,7 +1085,7 @@ static int yaffs_DeleteWorker(yaffs_Object *in, yaffs_Tnode *tn, __u32 level, in if(limit) { *limit = *limit-1; - if(limit <= 0) + if(*limit <= 0) { hitLimit = 1; } @@ -1151,6 +1156,8 @@ static int yaffs_SoftDeleteWorker(yaffs_Object *in, yaffs_Tnode *tn, __u32 level { if(tn->level0[i]) { + // Note this does not find the real chunk, only the chunk group. + // We make an assumption that a chunk group is niot larger than a block. theChunk = (tn->level0[i] << in->myDev->chunkGroupBits); T(YAFFS_TRACE_SCAN,(TSTR("soft delete tch %d cgb %d chunk %d" TENDSTR), tn->level0[i],in->myDev->chunkGroupBits,theChunk)); @@ -1437,6 +1444,16 @@ static void yaffs_FreeObject(yaffs_Object *tn) yaffs_Device *dev = tn->myDev; +#ifdef __KERNEL__ + if(tn->myInode) + { + // We're still hooked up to a cached inode. + // Don't delete now, but mark for later deletion + tn->deferedFree = 1; + return; + } +#endif + yaffs_UnhashObject(tn); // Link into the free list. @@ -1446,16 +1463,33 @@ static void yaffs_FreeObject(yaffs_Object *tn) } +#ifdef __KERNEL__ + +void yaffs_HandleDeferedFree(yaffs_Object *obj) +{ + if(obj->deferedFree) + { + yaffs_FreeObject(obj); + } +} + +#endif + static void yaffs_DeinitialiseObjects(yaffs_Device *dev) { // Free the list of allocated Objects + yaffs_ObjectList *tmp; + while( dev->allocatedObjectList) { + tmp = dev->allocatedObjectList->next; YFREE(dev->allocatedObjectList->objects); - dev->allocatedObjectList = dev->allocatedObjectList->next; + YFREE(dev->allocatedObjectList); + + dev->allocatedObjectList = tmp; } dev->freeObjects = NULL; @@ -1589,6 +1623,11 @@ yaffs_Object *yaffs_FindObjectByNumber(yaffs_Device *dev,__u32 number) in = list_entry(i, yaffs_Object,hashLink); if(in->objectId == number) { +#ifdef __KERNEL__ + // Don't tell the VFS about this if it has been marked for freeing + if(in->deferedFree) + return NULL; +#endif return in; } } @@ -1625,7 +1664,9 @@ yaffs_Object *yaffs_CreateNewObject(yaffs_Device *dev,int number,yaffs_ObjectTyp theObject->win_ctime[1] = theObject->win_mtime[1] = theObject->win_atime[1]; #else - theObject->st_atime = theObject->st_mtime = theObject->st_ctime = CURRENT_TIME; + + theObject->st_atime = theObject->st_mtime = theObject->st_ctime = Y_CURRENT_TIME; + #endif switch(type) { @@ -1726,10 +1767,11 @@ yaffs_Object *yaffs_MknodObject( yaffs_ObjectType type, #ifdef CONFIG_YAFFS_WINCE yfsd_WinFileTimeNow(in->win_atime); in->win_ctime[0] = in->win_mtime[0] = in->win_atime[0]; - in->win_ctime[1] = in->win_mtime[1] = in->win_atime[0]; + in->win_ctime[1] = in->win_mtime[1] = in->win_atime[1]; #else - in->st_atime = in->st_mtime = in->st_ctime = CURRENT_TIME; + + in->st_atime = in->st_mtime = in->st_ctime = Y_CURRENT_TIME; in->st_rdev = rdev; in->st_uid = uid; in->st_gid = gid; @@ -2281,6 +2323,7 @@ static int yaffs_GarbageCollectBlock(yaffs_Device *dev,int block) { // It's a header object->chunkId = newChunk; + object->serial = tags.serialNumber; } else { @@ -2822,6 +2865,7 @@ int yaffs_ReadChunkDataFromObject(yaffs_Object *in,int chunkInInode, __u8 *buffe } else { + memset(buffer,0,YAFFS_BYTES_PER_CHUNK); return 0; } @@ -2844,7 +2888,14 @@ static void yaffs_DeleteChunk(yaffs_Device *dev,int chunkId,int markNAND) if(markNAND) { yaffs_SpareInitialise(&spare); - + +#ifdef CONFIG_MTD_NAND_VERIFY_WRITE + + //read data before write, to ensure correct ecc + //if we're using MTD verification under Linux + yaffs_ReadChunkFromNAND(dev,chunkId,NULL,&spare,0); +#endif + spare.pageStatus = 0; // To mark it as deleted. @@ -3090,7 +3141,7 @@ static void yaffs_FlushFilesChunkCache(yaffs_Object *obj) int lowest; int i; yaffs_ChunkCache *cache; - int chunkWritten; + int chunkWritten = 0; int nBytes; int nCaches = obj->myDev->nShortOpCaches; @@ -3640,8 +3691,10 @@ int yaffs_ResizeFile(yaffs_Object *in, int newSize) int lastChunk = 1+ newSize/YAFFS_BYTES_PER_CHUNK; // Got to read and rewrite the last chunk with its new size. + // NB Got to zero pad to nuke old data yaffs_ReadChunkDataFromObject(in,lastChunk,dev->localBuffer); - + memset(dev->localBuffer + sizeOfPartialChunk,0, YAFFS_BYTES_PER_CHUNK - sizeOfPartialChunk); + yaffs_WriteChunkDataToObject(in,lastChunk,dev->localBuffer,sizeOfPartialChunk,1); } @@ -3693,7 +3746,7 @@ int yaffs_FlushFile(yaffs_Object *in, int updateTime) #ifdef CONFIG_YAFFS_WINCE yfsd_WinFileTimeNow(in->win_mtime); #else - in->st_mtime = CURRENT_TIME; + in->st_mtime = Y_CURRENT_TIME; #endif } @@ -3717,12 +3770,15 @@ static int yaffs_DoGenericObjectDeletion(yaffs_Object *in) yaffs_RemoveObjectFromDirectory(in); yaffs_DeleteChunk(in->myDev,in->chunkId,1); + in->chunkId = -1; +#if 0 #ifdef __KERNEL__ if(in->myInode) { in->myInode->u.generic_ip = NULL; - in->myInode = 0; + in->myInode = NULL; } +#endif #endif yaffs_FreeObject(in); return YAFFS_OK; @@ -3760,6 +3816,8 @@ static int yaffs_UnlinkFile(yaffs_Object *in) #ifdef __KERNEL__ if(!in->myInode) { + // Might be open at present, + // Caught by delete_inode in yaffs_fs.c immediateDeletion = 1; } @@ -4192,8 +4250,9 @@ static int yaffs_Scan(yaffs_Device *dev) { // Hoosterman, another problem.... // We're trying to use a non-directory as a directory - // Todo ... handle - T(YAFFS_TRACE_ERROR, (TSTR("yaffs tragedy: attempting to use non-directory as a directory in scan" TENDSTR))); + + T(YAFFS_TRACE_ERROR, (TSTR("yaffs tragedy: attempting to use non-directory as a directory in scan. Put in lost+found." TENDSTR))); + parent = dev->lostNFoundDir; } @@ -4546,9 +4605,10 @@ int yaffs_SetAttributes(yaffs_Object *obj, struct iattr *attr) if(valid & ATTR_UID) obj->st_uid = attr->ia_uid; if(valid & ATTR_GID) obj->st_gid = attr->ia_gid; - if(valid & ATTR_ATIME) obj->st_atime = attr->ia_atime; - if(valid & ATTR_CTIME) obj->st_ctime = attr->ia_ctime; - if(valid & ATTR_MTIME) obj->st_mtime = attr->ia_mtime; + if(valid & ATTR_ATIME) obj->st_atime = Y_TIME_CONVERT(attr->ia_atime); + if(valid & ATTR_CTIME) obj->st_ctime = Y_TIME_CONVERT(attr->ia_ctime); + if(valid & ATTR_MTIME) obj->st_mtime = Y_TIME_CONVERT(attr->ia_mtime); + if(valid & ATTR_SIZE) yaffs_ResizeFile(obj,attr->ia_size); @@ -4557,6 +4617,7 @@ int yaffs_SetAttributes(yaffs_Object *obj, struct iattr *attr) return YAFFS_OK; } + int yaffs_GetAttributes(yaffs_Object *obj, struct iattr *attr) { unsigned int valid = 0; @@ -4565,10 +4626,11 @@ int yaffs_GetAttributes(yaffs_Object *obj, struct iattr *attr) attr->ia_uid = obj->st_uid; valid |= ATTR_UID; attr->ia_gid = obj->st_gid; valid |= ATTR_GID; - attr->ia_atime = obj->st_atime; valid |= ATTR_ATIME; - attr->ia_ctime = obj->st_ctime; valid |= ATTR_CTIME; - attr->ia_mtime = obj->st_mtime; valid |= ATTR_MTIME; + Y_TIME_CONVERT(attr->ia_atime) = obj->st_atime; valid |= ATTR_ATIME; + Y_TIME_CONVERT(attr->ia_ctime) = obj->st_ctime; valid |= ATTR_CTIME; + Y_TIME_CONVERT(attr->ia_mtime) = obj->st_mtime; valid |= ATTR_MTIME; + attr->ia_size = yaffs_GetFileSize(obj); valid |= ATTR_SIZE; attr->ia_valid = valid; @@ -4632,8 +4694,7 @@ int yaffs_GutsInitialise(yaffs_Device *dev) int extraBits; int nBlocks; - if( dev->nBytesPerChunk != YAFFS_BYTES_PER_CHUNK || - + if( dev->nBytesPerChunk != YAFFS_BYTES_PER_CHUNK || dev->nChunksPerBlock < 2 || dev->nReservedBlocks < 2 || dev->startBlock <= 0 || @@ -4700,7 +4761,18 @@ int yaffs_GutsInitialise(yaffs_Device *dev) { dev->chunkGroupBits = bits - 16; } + dev->chunkGroupSize = 1 << dev->chunkGroupBits; + + if(dev->nChunksPerBlock < dev->chunkGroupSize) + { + // We have a problem because the soft delete won't work if + // the chunk group size > chunks per block. + // This can be remedied by using larger "virtual blocks". + + return YAFFS_FAIL; + } + @@ -4717,6 +4789,7 @@ int yaffs_GutsInitialise(yaffs_Device *dev) dev->eccUnfixed=0; dev->tagsEccFixed=0; dev->tagsEccUnfixed=0; + dev->nErasedBlocks=0; dev->localBuffer = YMALLOC(dev->nBytesPerChunk); @@ -4786,7 +4859,10 @@ void yaffs_Deinitialise(yaffs_Device *dev) yaffs_DeinitialiseBlocks(dev); yaffs_DeinitialiseTnodes(dev); yaffs_DeinitialiseObjects(dev); + if(dev->nShortOpCaches > 0) + YFREE(dev->srCache); YFREE(dev->localBuffer); + dev->isMounted = 0; } } @@ -4939,3 +5015,6 @@ void yaffs_GutsTest(yaffs_Device *dev) + + +