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sys: ContextByName

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This commit is contained in:
Bill Zissimopoulos
2016-02-06 11:14:27 -08:00
parent 650d4c4d18
commit 3ef9042071
3 changed files with 173 additions and 14 deletions
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27
src/sys/driver.h
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@ -449,6 +449,16 @@ typedef struct
RTL_BALANCED_LINKS Header;
FSP_DEVICE_CONTEXT_TABLE_ELEMENT_DATA Data;
} FSP_DEVICE_CONTEXT_TABLE_ELEMENT;
typedef struct
{
PUNICODE_STRING FileName;
PVOID Context;
} FSP_DEVICE_CONTEXT_BY_NAME_TABLE_ELEMENT_DATA;
typedef struct
{
RTL_BALANCED_LINKS Header;
FSP_DEVICE_CONTEXT_BY_NAME_TABLE_ELEMENT_DATA Data;
} FSP_DEVICE_CONTEXT_BY_NAME_TABLE_ELEMENT;
enum
{
FspFsctlDeviceExtensionKind = '\0ltC', /* file system control device (e.g. \Device\WinFsp.Disk) */
@ -478,9 +488,12 @@ typedef struct
KSPIN_LOCK ExpirationLock;
WORK_QUEUE_ITEM ExpirationWorkItem;
BOOLEAN ExpirationInProgress;
ERESOURCE FileRenameResource;
ERESOURCE ContextTableResource;
RTL_AVL_TABLE ContextTable;
PVOID ContextTableElementStorage;
RTL_AVL_TABLE ContextByNameTable;
PVOID ContextByNameTableElementStorage;
UNICODE_STRING VolumeName;
WCHAR VolumeNameBuf[FSP_DEVICE_VOLUME_NAME_LENMAX / sizeof(WCHAR)];
KSPIN_LOCK InfoSpinLock;
@ -516,6 +529,12 @@ PVOID FspFsvolDeviceInsertContext(PDEVICE_OBJECT DeviceObject, UINT64 Identifier
FSP_DEVICE_CONTEXT_TABLE_ELEMENT *ElementStorage, PBOOLEAN PInserted);
VOID FspFsvolDeviceDeleteContext(PDEVICE_OBJECT DeviceObject, UINT64 Identifier,
PBOOLEAN PDeleted);
PVOID FspFsvolDeviceLookupContextByName(PDEVICE_OBJECT DeviceObject, PUNICODE_STRING FileName);
PVOID FspFsvolDeviceLookupChildContextByName(PDEVICE_OBJECT DeviceObject, PUNICODE_STRING FileName);
PVOID FspFsvolDeviceInsertContextByName(PDEVICE_OBJECT DeviceObject, PUNICODE_STRING FileName, PVOID Context,
FSP_DEVICE_CONTEXT_BY_NAME_TABLE_ELEMENT *ElementStorage, PBOOLEAN PInserted);
VOID FspFsvolDeviceDeleteContextByName(PDEVICE_OBJECT DeviceObject, PUNICODE_STRING FileName,
PBOOLEAN PDeleted);
VOID FspFsvolGetVolumeInfo(PDEVICE_OBJECT DeviceObject, FSP_FSCTL_VOLUME_INFO *VolumeInfo);
BOOLEAN FspFsvolTryGetVolumeInfo(PDEVICE_OBJECT DeviceObject, FSP_FSCTL_VOLUME_INFO *VolumeInfo);
VOID FspFsvolSetVolumeInfo(PDEVICE_OBJECT DeviceObject, const FSP_FSCTL_VOLUME_INFO *VolumeInfo);
@ -570,9 +589,13 @@ typedef struct
/* interlocked access */
LONG RefCount;
UINT32 DeletePending;
/* locked access (ContextTable lock) */
/* locked under FSP_FSVOL_DEVICE_EXTENSION::ContextTableResource */
LONG OpenCount;
SHARE_ACCESS ShareAccess;
FSP_DEVICE_CONTEXT_TABLE_ELEMENT ContextElementStorage;
FSP_DEVICE_CONTEXT_BY_NAME_TABLE_ELEMENT ContextByNameElementStorage;
/* locked under FSP_FSVOL_DEVICE_EXTENSION::FileRenameResource */
UNICODE_STRING FileName;
/* locked under Header.Resource */
UINT64 InfoExpirationTime;
UINT32 FileAttributes;
@ -588,8 +611,6 @@ typedef struct
UINT64 UserContext;
UINT64 IndexNumber;
BOOLEAN IsDirectory;
FSP_DEVICE_CONTEXT_TABLE_ELEMENT ElementStorage;
UNICODE_STRING FileName;
WCHAR FileNameBuf[];
} FSP_FILE_NODE;
typedef struct