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Removed some memory leaks

Browse source 
Moved from first-fit to best-fit for non-paged pool allocation
Fixed bug in console driver (wasn't completing irps)
Fixed bug in vfat fsd (didn't recognize paths of the form foo//bar)

svn path=/trunk/; revision=196
This commit is contained in:
David Welch 1999-01-29 14:33:04 +00:00
parent a984daa5de
commit 3fcccd0b8c
4 changed files with 83 additions and 96 deletions
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117
reactos/drivers/fs/vfat/iface.c
View file

@ -626,14 +626,28 @@ NTSTATUS FindFile(PDEVICE_EXTENSION DeviceExt, PVfatFCB Fcb,
WCHAR name[256];
ULONG StartingSector;
ULONG NextCluster;
DPRINT("FindFile(Parent %x, FileToFind %w)\n",Parent,FileToFind);
WCHAR TempStr[2];
DPRINT("FindFile(Parent %x, FileToFind '%w')\n",Parent,FileToFind);
if (wcslen(FileToFind)==0)
{
TempStr[0] = (WCHAR)'.';
TempStr[1] = 0;
FileToFind=&TempStr;
}
if (Parent != NULL)
{
DPRINT("Parent->entry.FirstCluster %d\n",Parent->entry.FirstCluster);
}
if (Parent == NULL||Parent->entry.FirstCluster==1)
{
Size = DeviceExt->rootDirectorySectors;//FIXME : in fat32, no limit
StartingSector = DeviceExt->rootStart;
NextCluster=0;
if(FileToFind[0]==0 ||(FileToFind[0]=='\\' && FileToFind[1]==0))
if(FileToFind[0]==0 ||(FileToFind[0]=='\\' && FileToFind[1]==0) ||
(FileToFind[0]=='.' && FileToFind[1]==0))
{// it's root : complete essentials fields then return ok
memset(Fcb,0,sizeof(VfatFCB));
memset(Fcb->entry.Filename,' ',11);
@ -684,7 +698,7 @@ NTSTATUS FindFile(PDEVICE_EXTENSION DeviceExt, PVfatFCB Fcb,
}
if (GetEntryName((PVOID)block,&i,name,&j,DeviceExt,&StartingSector))
{
// DPRINT("Comparing %w %w\n",name,FileToFind);
DPRINT("Comparing '%w' '%w'\n",name,FileToFind);
if (wstrcmpjoki(name,FileToFind))
{
/* In the case of a long filename, the firstcluster is stored in
@ -780,10 +794,11 @@ NTSTATUS FsdOpenFile(PDEVICE_EXTENSION DeviceExt, PFILE_OBJECT FileObject,
PWSTR AbsFileName=NULL;
short i,j;
DPRINT("FsdOpenFile(%08lx, %08lx, %08lx)\n",
DPRINT("FsdOpenFile(%08lx, %08lx, %w)\n",
DeviceExt,
FileObject,
FileName);
//FIXME : treat relative name
if(FileObject->RelatedFileObject)
{
@ -833,64 +848,60 @@ DbgPrint("try related for %w\n",FileName);
Fcb = ExAllocatePool(NonPagedPool, sizeof(VfatFCB));
memset(Fcb,0,sizeof(VfatFCB));
Fcb->ObjectName=Fcb->PathName;
next = &string[0];
current = next+1;
if(*next==0) // root
{
Status = FindFile(DeviceExt,Fcb,ParentFcb,next,NULL,NULL);
ParentFcb=Fcb;
Fcb=NULL;
}
else
next = &string[0];
while (next!=NULL)
{
*next = '\\';
current = next+1;
next = wcschr(next+1,'\\');
if (next!=NULL)
*next=0;
Status = FindFile(DeviceExt,Fcb,ParentFcb,current,NULL,NULL);
if (Status != STATUS_SUCCESS)
{
if (Fcb != NULL)
ExFreePool(Fcb);
if (ParentFcb != NULL)
ExFreePool(ParentFcb);
if(AbsFileName)ExFreePool(AbsFileName);
return(Status);
}
Temp = Fcb;
if (ParentFcb == NULL)
{
Fcb = ExAllocatePool(NonPagedPool,sizeof(VfatFCB));
memset(Fcb,0,sizeof(VfatFCB));
Fcb->ObjectName=Fcb->PathName;
}
else Fcb = ParentFcb;
ParentFcb = Temp;
{
*next=0;
}
DPRINT("current '%w'\n",current);
Status = FindFile(DeviceExt,Fcb,ParentFcb,current,NULL,NULL);
if (Status != STATUS_SUCCESS)
{
if (Fcb != NULL)
ExFreePool(Fcb);
if (ParentFcb != NULL)
ExFreePool(ParentFcb);
if(AbsFileName)ExFreePool(AbsFileName);
return(Status);
}
Temp = Fcb;
if (ParentFcb == NULL)
{
Fcb = ExAllocatePool(NonPagedPool,sizeof(VfatFCB));
memset(Fcb,0,sizeof(VfatFCB));
Fcb->ObjectName=Fcb->PathName;
}
else Fcb = ParentFcb;
ParentFcb = Temp;
}
FileObject->FsContext =(PVOID) &ParentFcb->NTRequiredFCB;
newCCB = ExAllocatePool(NonPagedPool,sizeof(VfatCCB));
memset(newCCB,0,sizeof(VfatCCB));
FileObject->FsContext2 = newCCB;
newCCB->pFcb=ParentFcb;
newCCB->PtrFileObject=FileObject;
ParentFcb->RefCount++;
//FIXME : initialize all fields in FCB and CCB
ParentFcb->nextFcb=pFirstFcb;
pFirstFcb=ParentFcb;
FileObject->FsContext =(PVOID) &ParentFcb->NTRequiredFCB;
newCCB = ExAllocatePool(NonPagedPool,sizeof(VfatCCB));
memset(newCCB,0,sizeof(VfatCCB));
FileObject->FsContext2 = newCCB;
newCCB->pFcb=ParentFcb;
newCCB->PtrFileObject=FileObject;
ParentFcb->RefCount++;
//FIXME : initialize all fields in FCB and CCB
ParentFcb->nextFcb=pFirstFcb;
pFirstFcb=ParentFcb;
vfat_wcsncpy(ParentFcb->PathName,FileName,MAX_PATH);
ParentFcb->ObjectName=ParentFcb->PathName+(current-FileName);
ParentFcb->pDevExt=DeviceExt;
DPRINT("file open, fcb=%x\n",ParentFcb);
DPRINT("FileSize %d\n",ParentFcb->entry.FileSize);
if(Fcb) ExFreePool(Fcb);
if(AbsFileName)ExFreePool(AbsFileName);
ParentFcb->ObjectName=ParentFcb->PathName+(current-FileName);
ParentFcb->pDevExt=DeviceExt;
DPRINT("file open, fcb=%x\n",ParentFcb);
DPRINT("FileSize %d\n",ParentFcb->entry.FileSize);
if(Fcb) ExFreePool(Fcb);
if(AbsFileName)ExFreePool(AbsFileName);
return(STATUS_SUCCESS);
}
BOOLEAN FsdHasFileSystem(PDEVICE_OBJECT DeviceToMount)
}
BOOLEAN FsdHasFileSystem(PDEVICE_OBJECT DeviceToMount)
/*
* FUNCTION: Tests if the device contains a filesystem that can be mounted
* by this fsd

1
reactos/ntoskrnl/exports.lst
View file

@ -381,6 +381,7 @@ ZwSetValueKey
ZwUnmapViewOfSection
ZwWriteFile
sprintf
wcslen
wcschr
wcsncat
wcsncpy

2
reactos/ntoskrnl/io/create.c
View file

@ -100,7 +100,7 @@ NTSTATUS ZwCreateFile(PHANDLE FileHandle,
PIO_STACK_LOCATION StackLoc;
PWSTR Remainder;
DbgPrint("ZwCreateFile(FileHandle %x, DesiredAccess %x, "
DPRINT("ZwCreateFile(FileHandle %x, DesiredAccess %x, "
"ObjectAttributes %x ObjectAttributes->ObjectName->Buffer %w)\n",
FileHandle,DesiredAccess,ObjectAttributes,
ObjectAttributes->ObjectName->Buffer);

59
reactos/ntoskrnl/mm/npool.c
View file

@ -607,8 +607,9 @@ PVOID ExAllocateNonPagedPoolWithTag(ULONG type,
ULONG Tag,
PVOID Caller)
{
block_hdr* current=NULL;
block_hdr* current = NULL;
PVOID block;
block_hdr* best = NULL;
POOL_TRACE("ExAllocatePool(NumberOfBytes %d) caller %x ",
size,Caller);
@ -632,56 +633,30 @@ PVOID ExAllocateNonPagedPoolWithTag(ULONG type,
*/
current=free_list_head;
// defrag_free_list();
while (current!=NULL)
{
OLD_DPRINT("current %x size %x next %x\n",current,current->size,
current->next);
if (current->magic != BLOCK_HDR_MAGIC)
if (current->size>=size &&
(best == NULL ||
current->size < best->size))
{
DbgPrint("Bad block magic (probable pool corruption) at %x\n",
current);
KeBugCheck(KBUG_POOL_FREE_LIST_CORRUPT);
}
if (current->size>=size)
{
OLD_DPRINT("found block %x of size %d\n",current,size);
block=take_block(current,size);
VALIDATE_POOL;
memset(block,0,size);
POOL_TRACE("= %x\n",block);
return(block);
best = current;
}
current=current->next;
}
if(EiFreeNonPagedPool>size+32*PAGESIZE)
{//try defrag free list before growing kernel pool
defrag_free_list();
/*
* reLook after defrag
*/
current=free_list_head;
while (current!=NULL)
{
OLD_DPRINT("current %x size %x next %x\n",current,current->size,
current->next);
if (current->magic != BLOCK_HDR_MAGIC)
{
DbgPrint("Bad block magic (probable pool corruption)\n");
KeBugCheck(KBUG_POOL_FREE_LIST_CORRUPT);
}
if (current->size>=size)
{
OLD_DPRINT("found block %x of size %d\n",current,size);
block=take_block(current,size);
memset(block,0,size);
POOL_TRACE("= %x\n",block);
return(block);
}
current=current->next;
}
if (best != NULL)
{
OLD_DPRINT("found block %x of size %d\n",best,size);
block=take_block(best,size);
VALIDATE_POOL;
memset(block,0,size);
POOL_TRACE("= %x\n",block);
return(block);
}
/*
* Otherwise create a new block