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Fixed a dead lock in GetNextCluster.

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Fixed a bug in FAT32FindAvailableCluster.

svn path=/trunk/; revision=2268
This commit is contained in:
Hartmut Birr 2001-10-07 08:58:29 +00:00
parent d3a9cfe663
commit 767a20760d
1 changed files with 10 additions and 4 deletions
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14
reactos/drivers/fs/vfat/fat.c
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@ -1,5 +1,5 @@
/*
* $Id: fat.c,v 1.31 2001/10/03 18:23:02 hbirr Exp $
* $Id: fat.c,v 1.32 2001/10/07 08:58:29 hbirr Exp $
*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel
@ -380,9 +380,9 @@ FAT32FindAvailableCluster (PDEVICE_EXTENSION DeviceExt, PULONG Cluster)
}
}
}
if (*((PULONG)(BaseAddress + ((FatStart + i) % ChunkSize))) & 0x0fffffff == 0)
if ((*((PULONG)(BaseAddress + ((FatStart + i) % ChunkSize))) & 0x0fffffff) == 0)
{
DPRINT("Found available cluster 0x%x\n", i);
DPRINT("Found available cluster 0x%x\n", i / 4);
*Cluster = i / 4;
CcRosReleaseCacheSegment(DeviceExt->StorageBcb, CacheSeg, TRUE);
return(STATUS_SUCCESS);
@ -945,7 +945,7 @@ GetNextCluster(PDEVICE_EXTENSION DeviceExt,
// DPRINT ("GetNextCluster(DeviceExt %x, CurrentCluster %x)\n",
// DeviceExt, CurrentCluster);
if (Extend)
if (!Extend)
{
ExAcquireResourceSharedLite(&DeviceExt->FatResource, TRUE);
}
@ -967,6 +967,7 @@ GetNextCluster(PDEVICE_EXTENSION DeviceExt,
Status = FAT16FindAvailableCluster(DeviceExt, &NewCluster);
if (!NT_SUCCESS(Status))
{
ExReleaseResourceLite(&DeviceExt->FatResource);
return(Status);
}
}
@ -975,6 +976,7 @@ GetNextCluster(PDEVICE_EXTENSION DeviceExt,
Status = FAT32FindAvailableCluster(DeviceExt, &NewCluster);
if (!NT_SUCCESS(Status))
{
ExReleaseResourceLite(&DeviceExt->FatResource);
return(Status);
}
}
@ -983,6 +985,7 @@ GetNextCluster(PDEVICE_EXTENSION DeviceExt,
Status = FAT12FindAvailableCluster(DeviceExt, &NewCluster);
if (!NT_SUCCESS(Status))
{
ExReleaseResourceLite(&DeviceExt->FatResource);
return(Status);
}
}
@ -1021,6 +1024,7 @@ GetNextCluster(PDEVICE_EXTENSION DeviceExt,
Status = FAT16FindAvailableCluster(DeviceExt, &NewCluster);
if (!NT_SUCCESS(Status))
{
ExReleaseResourceLite(&DeviceExt->FatResource);
return(Status);
}
}
@ -1029,6 +1033,7 @@ GetNextCluster(PDEVICE_EXTENSION DeviceExt,
Status = FAT32FindAvailableCluster(DeviceExt, &NewCluster);
if (!NT_SUCCESS(Status))
{
ExReleaseResourceLite(&DeviceExt->FatResource);
return(Status);
}
}
@ -1037,6 +1042,7 @@ GetNextCluster(PDEVICE_EXTENSION DeviceExt,
Status = FAT12FindAvailableCluster(DeviceExt, &NewCluster);
if (!NT_SUCCESS(Status))
{
ExReleaseResourceLite(&DeviceExt->FatResource);
return(Status);
}
}