/*****************************************************************************************
Copyright (c) 2002-2004 The UbixOS Project
All rights reserved.
Redistribution and use in source and binary forms, with or without modification, are
permitted provided that the following conditions are met:
Redistributions of source code must retain the above copyright notice, this list of
conditions, the following disclaimer and the list of authors. Redistributions in binary
form must reproduce the above copyright notice, this list of conditions, the following
disclaimer and the list of authors in the documentation and/or other materials provided
with the distribution. Neither the name of the UbixOS Project nor the names of its
contributors may be used to endorse or promote products derived from this software
without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
$Id$
*****************************************************************************************/
#include <ubixfs/ubixfs.h>
#include <ubixfs/dirCache.h>
#include <vfs/file.h>
#include <vfs/mount.h>
#include <sys/video.h>
#include <sys/device.h>
#include <ubixos/types.h>
#include <ubixos/sched.h>
#include <ubixos/kpanic.h>
#include <ubixos/exec.h>
#include <lib/kmalloc.h>
#include <lib/string.h>
#include <lib/kprintf.h>
#include <assert.h>
#include <vmm/paging.h>
int
ubixfs_init() {
struct fileSystem ubixFileSystem =
{NULL, /* prev */
NULL, /* next */
(void *)initUbixFS, /* vfsInitFS */
(void *)readUbixFS, /* vfsRead */
(void *)writeUbixFS, /* vfsWrite */
(void *)openFileUbixFS, /* vfsOpenFile */
(void *)ubixFSUnlink, /* vfsUnlink */
(void *)ubixFSmkDir, /* vfsMakeDir */
NULL, /* vfsRemDir */
NULL, /* vfsSync */
0 /* vfsType */
}; /* ubixFileSystem */
/* Add UbixFS */
/* mji
* if (vfsRegisterFS(0, initUbixFS, readUbixFS, writeUbixFS, openFileUbixFS,
* ubixFSUnlink, ubixFSmkDir, 0x0, 0x0) != 0x0) {
*/
if (vfsRegisterFS(ubixFileSystem) != 0x0) {
kpanic("Unable To Enable UbixFS");
return(0x1);
}
/* Start Up The UbixFS Thread Which Will Manage All The Mounted
* UbixFS Partitions
*/
execThread(ubixFS_Thread,(uInt32)(kmalloc(0x2000)+0x2000),0x0);
/* Return */
return(0x0);
}
void
initUbixFS(struct mountPoints *mp) {
struct ubixFSInfo *fsInfo = 0x0;
int size;
assert(mp);
assert(mp->diskLabel);
assert(mp->diskLabel->partitions);
mp->fsInfo = (struct ubixFSInfo *)kmalloc(sizeof(struct ubixFSInfo));
fsInfo = mp->fsInfo;
fsInfo->rootDir = 0x0;
//mp->diskLabel->partitions[mp->partition].pOffset -= 63;
if ((mp->diskLabel->magicNum == UBIXDISKMAGIC) &&
(mp->diskLabel->magicNum2 == UBIXDISKMAGIC)) {
size = mp->diskLabel->partitions[mp->partition].pBatSize * 512;
fsInfo->blockAllocationTable = (struct blockAllocationTableEntry *)kmalloc(size);
/* fsInfo->blockAllocationTable[0].nextBlock = 100; */
size = (mp->diskLabel->partitions[mp->partition].pBatSize*512) / sizeof(struct blockAllocationTableEntry);
fsInfo->batEntries = size;
assert(mp->device->devInfo->read);
mp->device->devInfo->read(mp->device->devInfo->info,
fsInfo->blockAllocationTable,
mp->diskLabel->partitions[mp->partition].pOffset,
mp->diskLabel->partitions[mp->partition].pBatSize);
/* mji */
fsInfo->dirCache = ubixfs_cacheNew("/");
assert(fsInfo->dirCache);
fsInfo->dirCache->present = 1;
fsInfo->dirCache->size = 0x4000;
fsInfo->dirCache->startCluster = fsInfo->rootDir;
/* mji */
fsInfo->dirCache->info = (struct directoryEntry *)kmalloc(0x4000); /* allocate root dir */
kprintf("\ncaching root dir [%i]\n",fsInfo->rootDir);
mp->device->devInfo->read(mp->device->devInfo->info,
fsInfo->dirCache->info,
(mp->diskLabel->partitions[mp->partition].pOffset+fsInfo->blockAllocationTable[fsInfo->rootDir].realSector),
0x4000 / 512);
/* mji */
//UBU dircache the ubixfs fs info struct fsInfo ->(pointer to) your rootdir thing like fsInfo->rootDirCache=ubixfs_cacheNode(blah);
kprintf(" Offset: [%i], Partition: [%i]\n",
mp->diskLabel->partitions[mp->partition].pOffset,mp->partition);
kprintf("UbixFS Initialized\n");
}
else {
kprintf("Insert System Disk!\n");
while (1);
initUbixFS(mp);
}
/* Return */
return;
}
int
openFileUbixFS(char *file, fileDescriptor *fd) {
int x = 0;
/* mji struct directoryEntry *dirEntry = (struct directoryEntry *)kmalloc(0x4000); */
struct cacheNode * cacheNode = NULL;
struct directoryEntry * dirEntry = NULL;
struct ubixFSInfo *fsInfo = fd->mp->fsInfo;
kprintf("openFileUbixFS(%s), cwd: %s\n", file, _current->oInfo.cwd);
if (fsInfo->dirCache == NULL) kprintf("dirCache is null!\n");
assert(fd);
assert(fd->mp);
assert(fd->mp->device);
assert(fd->mp->device->devInfo);
assert(fd->mp->device->devInfo->read);
assert(fsInfo);
assert(fsInfo->dirCache);
do {
cacheNode = ubixfs_cacheFind(fsInfo->dirCache, file);
if (cacheNode == NULL) return 0;
if (cacheNode->present == 1) break;
/* one level of the cache wasn't loaded */
if (cacheNode->size != 0 && cacheNode->info == NULL) {
kprintf("allocating space for %s\n", cacheNode->name);
cacheNode->info = kmalloc(cacheNode->size);
cacheNode->present = 1;
} /* if */
} while (1);
assert(cacheNode);
if (cacheNode == NULL) return 0;
if ((fd->mode & fileRead) == fileRead) {
fd->start = cacheNode->startCluster;
fd->size = cacheNode->size;
fd->perms = cacheNode->permissions;
fd->dirBlock = 0x0; /* Directory Start Sector */
return 1;
}
else
if ((fd->mode & fileWrite) == fileWrite) {
kprintf("Ouch! in filewrite!\n");
#if 0
fd->start = dirEntry->startCluster;
fd->size = dirEntry->size;
fd->perms = dirEntry->permissions;
fd->dirBlock = 0x0; /* Directory Start Sector */
#endif
return(0x1);
}
return 0;
/* mji --- */
#if 0
if (file[0] == '/' && file[1] != '\0') file++;
/*mji rootDirCacheNode = ubixfs_dirCacheFind(fsInfo->dirCache, "/"); */
cacheNode = fsInfo->dirCache;
assert(cacheNode);
dirEntry = (struct directoryEntry *)rootDirCacheNode->info;
assert(dirEntry);
/* mji
fd->mp->device->devInfo->read(fd->mp->device->devInfo->info,
dirEntry,
(fd->mp->diskLabel->partitions[fd->mp->partition].pOffset+fsInfo->blockAllocationTable[fsInfo->rootDir].realSector),(0x4000/512));
mji */
if ((fd->mode & fileRead) == fileRead) {
for (x=0;x<(0x4000/sizeof(struct directoryEntry));x++) {
if ((int)!strcmp(dirEntry[x].fileName,file)) {
fd->start = dirEntry[x].startCluster;
fd->size = dirEntry[x].size;
fd->perms = dirEntry[x].permissions;
fd->dirBlock = 0x0; /* Directory Start Sector */
return((int)1);
}
}
}
else if ((fd->mode & fileWrite) == fileWrite) {
for (x=0;x<(0x4000/sizeof(struct directoryEntry));x++) {
if (!strcmp(dirEntry[x].fileName,file)) {
fd->start = dirEntry[x].startCluster;
fd->size = dirEntry[x].size;
fd->perms = dirEntry[x].permissions;
fd->dirBlock = 0x0; /* Directory Start Sector */
return(0x1);
}
if (dirEntry[x].attributes == 0x0) {
sprintf(dirEntry[x].fileName,file);
dirEntry[x].size = 0x0;
dirEntry[x].startCluster = getFreeBlocks(1,fd);
dirEntry[x].attributes = typeFile;
dirEntry[x].permissions = 3754;
fd->size = 0x0;
fd->start = dirEntry[x].startCluster;
fd->dirBlock = 0x0;
fd->mp->device->devInfo->write(fd->mp->device->devInfo->info,dirEntry,(fd->mp->diskLabel->partitions[fd->mp->partition].pOffset+fsInfo->blockAllocationTable[fsInfo->rootDir].realSector),8);
return(0x1);
}
}
}
return(0);
#endif
}
int
writeFileByte(int ch, fileDescriptor *fd, long offset) {
int blockCount = 0x0,batIndex = 0x0,batIndexPrev = 0x0,i = 0x0;
struct directoryEntry *dirEntry = 0x0;
struct ubixFSInfo *fsInfo = NULL;
assert(fd);
assert(fd->mp);
assert(fd->mp->diskLabel);
batIndexPrev = fd->start;
fsInfo = fd->mp->fsInfo;
/* Find Out How Many Blocks Long This File Is */
blockCount = (offset/4096);
/* Find The Block If It Doesn't Exist We Will Have To Allocate One */
for (i=0x0; i <= fd->mp->diskLabel->partitions[fd->mp->partition].pBatSize;
i++) {
batIndex = fsInfo->blockAllocationTable[batIndexPrev].nextBlock;
if (batIndex == 0x0) {
break;
}
batIndexPrev = batIndex;
}
if ((offset%4096 == 0) && (fd->status == fdRead)) {
fd->status = fdOpen;
}
/* If batIndex == 0x0 Then We Must Allocate A New Block */
if (batIndex == 0x0) {
for (i=1;i < fsInfo->batEntries;i++) {
if (fsInfo->blockAllocationTable[i].attributes == 0x0) {
fsInfo->blockAllocationTable[batIndexPrev].nextBlock = i;
fsInfo->blockAllocationTable[batIndex].nextBlock = -1;
batIndex = i;
fd->start = i;
break;
}
}
/* fd->mp->drive->read(fd->mp->drive->driveInfoStruct,diskLabel->partitions[0].pOffset+blockAllocationTable[batIndex].realSector,8,fd->buffer); */
fd->buffer[offset-(blockCount*4096)] = ch;
fd->mp->device->devInfo->write(fd->mp->device->devInfo->info,fd->buffer,fd->mp->diskLabel->partitions[fd->mp->partition].pOffset+fsInfo->blockAllocationTable[batIndex].realSector,8);
}
else {
if (fd->status != fdRead) {
fd->mp->device->devInfo->read(fd->mp->device->devInfo->info,fd->buffer,fd->mp->diskLabel->partitions[fd->mp->partition].pOffset+fsInfo->blockAllocationTable[batIndex].realSector,8);
fd->status = fdRead;
}
fd->buffer[offset-(blockCount*4096)] = ch;
fd->mp->device->devInfo->write(fd->mp->device->devInfo->info,fd->buffer,fd->mp->diskLabel->partitions[fd->mp->partition].pOffset+fsInfo->blockAllocationTable[batIndex].realSector,8);
}
if (offset > fd->size) {
fd->size = offset;
dirEntry = (struct directoryEntry *)kmalloc(4096);
fd->mp->device->devInfo->read(fd->mp->device->devInfo->info,dirEntry,(fd->mp->diskLabel->partitions[fd->mp->partition].pOffset+fsInfo->blockAllocationTable[fd->dirBlock].realSector),8);
for (i=0x0;i<(4096/sizeof(struct directoryEntry));i++) {
if ((int)!strcmp(dirEntry[i].fileName,fd->fileName))
break;
}
dirEntry[i].size = fd->size;
fd->mp->device->devInfo->write(fd->mp->device->devInfo->info,dirEntry,(fd->mp->diskLabel->partitions[fd->mp->partition].pOffset+fsInfo->blockAllocationTable[fd->dirBlock].realSector),8);
kfree(dirEntry);
}
return(ch);
}
/* Verified Functions */
/************************************************************************
Function: int readUbixFS(fileDescriptor *fd,char *data,long offset,long size)
Description: Read File Into Data
Notes:
************************************************************************/
int readUbixFS(fileDescriptor *fd,char *data,long offset,long size) {
int blockCount = 0x0;
int batIndex;
long i = 0x0;
struct ubixFSInfo *fsInfo = NULL;
assert(fd);
assert(fd->mp);
assert(fd->mp->fsInfo);
fsInfo = fd->mp->fsInfo;
batIndex = fd->start;
blockCount = ((offset)/4096);
/* Find The Starting Block */
for (i=1;i<=blockCount;i++) {
batIndex = fsInfo->blockAllocationTable[batIndex].nextBlock;
if (batIndex == 0x0) {
/* sysErr(log, "Invalid File Offset"); */
return(0);
}
}
/* If The File Size Is Greater Then The Offset Lets Goto Work */
fd->mp->device->devInfo->read(fd->mp->device->devInfo->info,fd->buffer,fd->mp->diskLabel->partitions[fd->mp->partition].pOffset+fsInfo->blockAllocationTable[batIndex].realSector,blockSize);
for (i=0x0; i<size; i++) {
if (offset > fd->size) {
/* Set File EOF If There Is Nothing To Do */
data[i] = '\0';
fd->status = fdEof;
return(size);
}
/* Copy Data From Buffer To Data */
data[i] = fd->buffer[offset-(blockCount*4096)];
offset++;
if (offset%4096 == 0 && offset != size) {
batIndex = fsInfo->blockAllocationTable[batIndex].nextBlock;
fd->mp->device->devInfo->read(fd->mp->device->devInfo->info,fd->buffer,fd->mp->diskLabel->partitions[fd->mp->partition].pOffset+fsInfo->blockAllocationTable[batIndex].realSector,blockSize);
blockCount++;
}
}
/* Return */
return(size);
}
/************************************************************************
Function: int writeUbixFS(fileDescriptor *fd,char *data,long offset,long size)
Description: Write Data Into File
Notes:
************************************************************************/
int writeUbixFS(fileDescriptor *fd,char *data,long offset,long size) {
uInt32 blockOffset = 0x0;
uInt32 blockIndex;
uInt32 blockIndexPrev;
uInt32 i = 0x0;
struct ubixFSInfo *fsInfo = NULL;
struct directoryEntry *dirEntry = 0x0;
assert(fd);
assert(fd->mp);
assert(fd->mp->fsInfo);
assert(fd->mp->device);
assert(fd->mp->device->devInfo);
blockIndex = blockIndexPrev = fd->start;
fsInfo = fd->mp->fsInfo;
blockOffset = (offset/0x1000);
if (fd->size != 0x0) {
for (i = 0x0;i < blockOffset;i++) {
blockIndex = fsInfo->blockAllocationTable[blockIndexPrev].nextBlock;
if (blockIndex == EOBC) {
blockIndex = getFreeBlocks(1,fd);
fsInfo->blockAllocationTable[blockIndexPrev].nextBlock = blockIndex;
fsInfo->blockAllocationTable[blockIndex].nextBlock = EOBC;
break;
}
blockIndexPrev = blockIndex;
}
}
fd->mp->device->devInfo->read(fd->mp->device->devInfo->info,fd->buffer,fd->mp->diskLabel->partitions[fd->mp->partition].pOffset+fsInfo->blockAllocationTable[blockIndex].realSector,blockSize);
for (i = 0x0;i < size;i++) {
fd->buffer[(offset- (blockOffset *0x1000))] = data[i];
offset++;
if (offset%4096 == 0x0) {
blockOffset++;
fd->mp->device->devInfo->write(fd->mp->device->devInfo->info,fd->buffer,fd->mp->diskLabel->partitions[fd->mp->partition].pOffset+fsInfo->blockAllocationTable[blockIndex].realSector,blockSize);
if (fsInfo->blockAllocationTable[blockIndex].nextBlock == EOBC) {
blockIndexPrev = blockIndex;
blockIndex = getFreeBlocks(1,fd);
fsInfo->blockAllocationTable[blockIndexPrev].nextBlock = blockIndex;
fsInfo->blockAllocationTable[blockIndex].nextBlock = EOBC;
}
else {
blockIndex = fsInfo->blockAllocationTable[blockIndex].nextBlock;
fd->mp->device->devInfo->read(fd->mp->device->devInfo->info,fd->buffer,fd->mp->diskLabel->partitions[fd->mp->partition].pOffset+fsInfo->blockAllocationTable[blockIndex].realSector,blockSize);
}
}
}
fd->mp->device->devInfo->write(fd->mp->device->devInfo->info,fd->buffer,fd->mp->diskLabel->partitions[fd->mp->partition].pOffset+fsInfo->blockAllocationTable[blockIndex].realSector,blockSize);
if (offset > fd->size) {
fd->size = offset;
dirEntry = (struct directoryEntry *)kmalloc(4096);
fd->mp->device->devInfo->read(fd->mp->device->devInfo->info,dirEntry,(fd->mp->diskLabel->partitions[fd->mp->partition].pOffset+fsInfo->blockAllocationTable[fd->dirBlock].realSector),blockSize);
for (i=0x0;i<(4096/sizeof(struct directoryEntry));i++) {
if ((int)!strcmp(dirEntry[i].fileName,fd->fileName))
break;
}
dirEntry[i].size = fd->size;
dirEntry[i].startCluster = fd->start;
fd->mp->device->devInfo->write(fd->mp->device->devInfo->info,dirEntry,(fd->mp->diskLabel->partitions[fd->mp->partition].pOffset+fsInfo->blockAllocationTable[fd->dirBlock].realSector),blockSize);
kfree(dirEntry);
}
/* Return */
return(size);
}
void
ubixFSUnlink(char *path,struct mountPoints *mp) {
int x=0;
struct directoryEntry *dirEntry = (struct directoryEntry *)kmalloc(0x1000);
struct ubixFSInfo *fsInfo = mp->fsInfo;
mp->device->devInfo->read(mp->device->devInfo->info,dirEntry,(mp->diskLabel->partitions[mp->partition].pOffset+fsInfo->blockAllocationTable[fsInfo->rootDir].realSector),8);
for (x=0;x<(4096/sizeof(struct directoryEntry));x++) {
if ((int)!strcmp(dirEntry[x].fileName,path)) {
dirEntry[x].attributes |= typeDeleted;
dirEntry[x].fileName[0] = '?';
mp->device->devInfo->write(mp->device->devInfo->info,dirEntry,(mp->diskLabel->partitions[mp->partition].pOffset+fsInfo->blockAllocationTable[fsInfo->rootDir].realSector),8);
return;
}
}
kprintf("File Not Found\n");
return;
}
/***
$Log$
Revision 1.29 2004/07/22 16:34:32 flameshadow
add: file and dir caching kinda work
Revision 1.28 2004/07/21 22:07:18 flameshadow
chg: renamed caching functions (again)
Revision 1.27 2004/07/21 21:08:05 flameshadow
add: added provisions for file caching
Revision 1.26 2004/07/20 23:21:31 flameshadow
syncing
Revision 1.25 2004/07/20 21:39:53 reddawg
ubixfs: does propper caching now problem was you did not seek realSector however the os starts but I am getting a segfault could be from anything haven't looked into it right quick
Revision 1.24 2004/07/20 21:38:08 flameshadow
try now
Revision 1.23 2004/07/20 21:35:09 reddawg
Let me commit before we start to overlap
Revision 1.22 2004/07/20 21:28:16 flameshadow
oops
Revision 1.20 2004/07/20 19:36:49 reddawg
UBU Tags
Revision 1.19 2004/07/20 18:09:37 flameshadow
add: directory caching related stuff
Revision 1.18 2004/07/17 03:21:34 flameshadow
chg: cleaned up code; added assert() statements
Revision 1.15 2004/07/14 12:21:49 reddawg
ubixfs: enableUbixFs to ubixfs_init
Changed Startup Routines
Revision 1.14 2004/06/28 23:12:58 reddawg
file format now container:/path/to/file
Revision 1.13 2004/06/28 18:12:44 reddawg
We need these files
Revision 1.12 2004/06/28 11:57:58 reddawg
Fixing Up Filesystem
Revision 1.10 2004/06/04 13:20:22 reddawg
ubixFSmkDir(): played with it a bit to see if it still worked
Revision 1.9 2004/06/04 10:19:42 reddawg
notes: we compile again, thank g-d anyways i was about to cry
Revision 1.8 2004/06/01 00:04:53 reddawg
Try now mark
Revision 1.7 2004/05/19 15:20:06 reddawg
Fixed reference problems due to changes in drive subsystem
Revision 1.6 2004/05/19 04:07:43 reddawg
kmalloc(size,pid) no more it is no kmalloc(size); the way it should of been
Revision 1.5 2004/04/29 15:45:19 reddawg
Fixed some bugs so now the automade images will work correctly
Revision 1.4 2004/04/28 21:10:40 reddawg
Lots Of changes to make it work with existing os
Revision 1.3 2004/04/28 13:33:09 reddawg
Overhaul to ubixfs and boot loader and MBR to work well with our schema
now BAT and dir and file entries are all offset 64Sectors from the start of the partition
Revision 1.2 2004/04/28 02:22:55 reddawg
This is a fiarly large commit but we are starting to use new driver model
all around
Revision 1.1.1.1 2004/04/15 12:07:08 reddawg
UbixOS v1.0
Revision 1.31 2004/04/13 16:36:34 reddawg
Changed our copyright, it is all now under a BSD-Style license
END
***/
