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dll: API polishing

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This commit is contained in:
Bill Zissimopoulos
2016-10-20 16:32:12 -07:00
parent 03611b6210
commit 067a0f1b37
6 changed files with 197 additions and 182 deletions
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173
inc/winfsp/winfsp.h
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@@ -136,8 +136,6 @@ typedef struct _FSP_FILE_SYSTEM_INTERFACE
*
* @param FileSystem
* The file system on which this request is posted.
* @param Request
* The request posted by the kernel mode FSD.
* @param VolumeInfo [out]
* Pointer to a structure that will receive the volume information on successful return
* from this call.
@@ -145,15 +143,12 @@ typedef struct _FSP_FILE_SYSTEM_INTERFACE
* STATUS_SUCCESS or error code.
*/
NTSTATUS (*GetVolumeInfo)(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_REQ *Request,
FSP_FSCTL_VOLUME_INFO *VolumeInfo);
/**
* Set volume label.
*
* @param FileSystem
* The file system on which this request is posted.
* @param Request
* The request posted by the kernel mode FSD.
* @param VolumeLabel
* The new label for the volume.
* @param VolumeInfo [out]
@@ -163,7 +158,6 @@ typedef struct _FSP_FILE_SYSTEM_INTERFACE
* STATUS_SUCCESS or error code.
*/
NTSTATUS (*SetVolumeLabel)(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_REQ *Request,
PWSTR VolumeLabel,
FSP_FSCTL_VOLUME_INFO *VolumeInfo);
/**
@@ -202,13 +196,8 @@ typedef struct _FSP_FILE_SYSTEM_INTERFACE
*
* @param FileSystem
* The file system on which this request is posted.
* @param Request
* The request posted by the kernel mode FSD.
* @param FileName
* The name of the file or directory to be created.
* @param CaseSensitive
* Whether to treat the FileName as case-sensitive or case-insensitive. Case-sensitive
* file systems always treat FileName as case-sensitive regardless of this parameter.
* @param CreateOptions
* Create options for this request. This parameter has the same meaning as the
* CreateOptions parameter of the NtCreateFile API. User mode file systems should typically
@@ -216,12 +205,18 @@ typedef struct _FSP_FILE_SYSTEM_INTERFACE
* directory rather than a file. Some file systems may also want to pay attention to the
* FILE_NO_INTERMEDIATE_BUFFERING and FILE_WRITE_THROUGH flags, although these are
* typically handled by the FSD component.
* @param GrantedAccess
* Determines the specific access rights that have been granted for this request. Upon
* receiving this call all access checks have been performed and the user mode file system
* need not perform any additional checks. However this parameter may be useful to a user
* mode file system; for example the WinFsp-FUSE layer uses this parameter to determine
* which flags to use in its POSIX open() call.
* @param FileAttributes
* File attributes to apply to the newly created file or directory.
* @param SecurityDescriptor
* Security descriptor to apply to the newly created file or directory. This security
* descriptor will always be in self-relative format. Its length can be retrieved using the
* Windows GetSecurityDescriptorLength API.
* Windows GetSecurityDescriptorLength API. Will be NULL for named streams.
* @param AllocationSize
* Allocation size for the newly created file.
* @param PFileNode [out]
@@ -237,8 +232,7 @@ typedef struct _FSP_FILE_SYSTEM_INTERFACE
* STATUS_SUCCESS or error code.
*/
NTSTATUS (*Create)(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_REQ *Request,
PWSTR FileName, BOOLEAN CaseSensitive, UINT32 CreateOptions,
PWSTR FileName, UINT32 CreateOptions, UINT32 GrantedAccess,
UINT32 FileAttributes, PSECURITY_DESCRIPTOR SecurityDescriptor, UINT64 AllocationSize,
PVOID *PFileNode, FSP_FSCTL_FILE_INFO *FileInfo);
/**
@@ -246,19 +240,20 @@ typedef struct _FSP_FILE_SYSTEM_INTERFACE
*
* @param FileSystem
* The file system on which this request is posted.
* @param Request
* The request posted by the kernel mode FSD.
* @param FileName
* The name of the file or directory to be opened.
* @param CaseSensitive
* Whether to treat the FileName as case-sensitive or case-insensitive. Case-sensitive
* file systems always treat FileName as case-sensitive regardless of this parameter.
* @param CreateOptions
* Create options for this request. This parameter has the same meaning as the
* CreateOptions parameter of the NtCreateFile API. User mode file systems typically
* do not need to do anything special with respect to this parameter. Some file systems may
* also want to pay attention to the FILE_NO_INTERMEDIATE_BUFFERING and FILE_WRITE_THROUGH
* flags, although these are typically handled by the FSD component.
* @param GrantedAccess
* Determines the specific access rights that have been granted for this request. Upon
* receiving this call all access checks have been performed and the user mode file system
* need not perform any additional checks. However this parameter may be useful to a user
* mode file system; for example the WinFsp-FUSE layer uses this parameter to determine
* which flags to use in its POSIX open() call.
* @param PFileNode [out]
* Pointer that will receive the file node on successful return from this call. The file
* node is a void pointer (or an integer that can fit in a pointer) that is used to
@@ -272,16 +267,13 @@ typedef struct _FSP_FILE_SYSTEM_INTERFACE
* STATUS_SUCCESS or error code.
*/
NTSTATUS (*Open)(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_REQ *Request,
PWSTR FileName, BOOLEAN CaseSensitive, UINT32 CreateOptions,
PWSTR FileName, UINT32 CreateOptions, UINT32 GrantedAccess,
PVOID *PFileNode, FSP_FSCTL_FILE_INFO *FileInfo);
/**
* Overwrite a file.
*
* @param FileSystem
* The file system on which this request is posted.
* @param Request
* The request posted by the kernel mode FSD.
* @param FileNode
* The file node of the file to overwrite.
* @param FileAttributes
@@ -296,7 +288,6 @@ typedef struct _FSP_FILE_SYSTEM_INTERFACE
* STATUS_SUCCESS or error code.
*/
NTSTATUS (*Overwrite)(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_REQ *Request,
PVOID FileNode, UINT32 FileAttributes, BOOLEAN ReplaceFileAttributes,
FSP_FSCTL_FILE_INFO *FileInfo);
/**
@@ -324,8 +315,6 @@ typedef struct _FSP_FILE_SYSTEM_INTERFACE
*
* @param FileSystem
* The file system on which this request is posted.
* @param Request
* The request posted by the kernel mode FSD.
* @param FileNode
* The file node of the file or directory to cleanup.
* @param FileName
@@ -339,28 +328,22 @@ typedef struct _FSP_FILE_SYSTEM_INTERFACE
* CanDelete
*/
VOID (*Cleanup)(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_REQ *Request,
PVOID FileNode, PWSTR FileName, BOOLEAN Delete);
/**
* Close a file.
*
* @param FileSystem
* The file system on which this request is posted.
* @param Request
* The request posted by the kernel mode FSD.
* @param FileNode
* The file node of the file or directory to be closed.
*/
VOID (*Close)(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_REQ *Request,
PVOID FileNode);
/**
* Read a file.
*
* @param FileSystem
* The file system on which this request is posted.
* @param Request
* The request posted by the kernel mode FSD.
* @param FileNode
* The file node of the file to be read.
* @param Buffer
@@ -376,7 +359,6 @@ typedef struct _FSP_FILE_SYSTEM_INTERFACE
* operation.
*/
NTSTATUS (*Read)(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_REQ *Request,
PVOID FileNode, PVOID Buffer, UINT64 Offset, ULONG Length,
PULONG PBytesTransferred);
/**
@@ -384,8 +366,6 @@ typedef struct _FSP_FILE_SYSTEM_INTERFACE
*
* @param FileSystem
* The file system on which this request is posted.
* @param Request
* The request posted by the kernel mode FSD.
* @param FileNode
* The file node of the file to be written.
* @param Buffer
@@ -409,7 +389,6 @@ typedef struct _FSP_FILE_SYSTEM_INTERFACE
* operation.
*/
NTSTATUS (*Write)(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_REQ *Request,
PVOID FileNode, PVOID Buffer, UINT64 Offset, ULONG Length,
BOOLEAN WriteToEndOfFile, BOOLEAN ConstrainedIo,
PULONG PBytesTransferred, FSP_FSCTL_FILE_INFO *FileInfo);
@@ -420,23 +399,18 @@ typedef struct _FSP_FILE_SYSTEM_INTERFACE
*
* @param FileSystem
* The file system on which this request is posted.
* @param Request
* The request posted by the kernel mode FSD.
* @param FileNode
* The file node of the file to be flushed. When NULL the whole volume is being flushed.
* @return
* STATUS_SUCCESS or error code.
*/
NTSTATUS (*Flush)(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_REQ *Request,
PVOID FileNode);
/**
* Get file or directory information.
*
* @param FileSystem
* The file system on which this request is posted.
* @param Request
* The request posted by the kernel mode FSD.
* @param FileNode
* The file node of the file or directory to get information for.
* @param FileInfo [out]
@@ -446,7 +420,6 @@ typedef struct _FSP_FILE_SYSTEM_INTERFACE
* STATUS_SUCCESS or error code.
*/
NTSTATUS (*GetFileInfo)(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_REQ *Request,
PVOID FileNode,
FSP_FSCTL_FILE_INFO *FileInfo);
/**
@@ -454,8 +427,6 @@ typedef struct _FSP_FILE_SYSTEM_INTERFACE
*
* @param FileSystem
* The file system on which this request is posted.
* @param Request
* The request posted by the kernel mode FSD.
* @param FileNode
* The file node of the file or directory to set information for.
* @param FileAttributes
@@ -477,7 +448,6 @@ typedef struct _FSP_FILE_SYSTEM_INTERFACE
* STATUS_SUCCESS or error code.
*/
NTSTATUS (*SetBasicInfo)(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_REQ *Request,
PVOID FileNode, UINT32 FileAttributes,
UINT64 CreationTime, UINT64 LastAccessTime, UINT64 LastWriteTime,
FSP_FSCTL_FILE_INFO *FileInfo);
@@ -503,8 +473,6 @@ typedef struct _FSP_FILE_SYSTEM_INTERFACE
*
* @param FileSystem
* The file system on which this request is posted.
* @param Request
* The request posted by the kernel mode FSD.
* @param FileNode
* The file node of the file to set the file/allocation size for.
* @param NewSize
@@ -518,7 +486,6 @@ typedef struct _FSP_FILE_SYSTEM_INTERFACE
* STATUS_SUCCESS or error code.
*/
NTSTATUS (*SetFileSize)(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_REQ *Request,
PVOID FileNode, UINT64 NewSize, BOOLEAN SetAllocationSize,
FSP_FSCTL_FILE_INFO *FileInfo);
/**
@@ -536,8 +503,6 @@ typedef struct _FSP_FILE_SYSTEM_INTERFACE
*
* @param FileSystem
* The file system on which this request is posted.
* @param Request
* The request posted by the kernel mode FSD.
* @param FileNode
* The file node of the file or directory to test for deletion.
* @param FileName
@@ -548,7 +513,6 @@ typedef struct _FSP_FILE_SYSTEM_INTERFACE
* Cleanup
*/
NTSTATUS (*CanDelete)(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_REQ *Request,
PVOID FileNode, PWSTR FileName);
/**
* Renames a file or directory.
@@ -564,8 +528,6 @@ typedef struct _FSP_FILE_SYSTEM_INTERFACE
*
* @param FileSystem
* The file system on which this request is posted.
* @param Request
* The request posted by the kernel mode FSD.
* @param FileNode
* The file node of the file or directory to be renamed.
* @param FileName
@@ -578,7 +540,6 @@ typedef struct _FSP_FILE_SYSTEM_INTERFACE
* STATUS_SUCCESS or error code.
*/
NTSTATUS (*Rename)(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_REQ *Request,
PVOID FileNode,
PWSTR FileName, PWSTR NewFileName, BOOLEAN ReplaceIfExists);
/**
@@ -599,7 +560,6 @@ typedef struct _FSP_FILE_SYSTEM_INTERFACE
* STATUS_SUCCESS or error code.
*/
NTSTATUS (*GetSecurity)(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_REQ *Request,
PVOID FileNode,
PSECURITY_DESCRIPTOR SecurityDescriptor, SIZE_T *PSecurityDescriptorSize);
/**
@@ -610,24 +570,28 @@ typedef struct _FSP_FILE_SYSTEM_INTERFACE
* @param FileNode
* The file node of the file or directory to set the security descriptor for.
* @param SecurityInformation
* Indicates what part of the file or directory security descriptor to change.
* @param SecurityDescriptor
* Security descriptor to apply to the file or directory. This security descriptor will
* always be in self-relative format.
* Describes what parts of the file or directory security descriptor should
* be modified.
* @param ModificationDescriptor
* Describes the modifications to apply to the file or directory security descriptor.
* @param AccessToken
* A handle to a token that can be used to verify whether the requested modifications
* are allowed.
* @return
* STATUS_SUCCESS or error code.
* @see
* FspSetSecurityDescriptor
* FspDeleteSecurityDescriptor
*/
NTSTATUS (*SetSecurity)(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_REQ *Request,
PVOID FileNode,
SECURITY_INFORMATION SecurityInformation, PSECURITY_DESCRIPTOR SecurityDescriptor);
SECURITY_INFORMATION SecurityInformation, PSECURITY_DESCRIPTOR ModificationDescriptor,
HANDLE AccessToken);
/**
* Read a directory.
*
* @param FileSystem
* The file system on which this request is posted.
* @param Request
* The request posted by the kernel mode FSD.
* @param FileNode
* The file node of the directory to be read.
* @param Buffer
@@ -652,7 +616,6 @@ typedef struct _FSP_FILE_SYSTEM_INTERFACE
* FspFileSystemAddDirInfo
*/
NTSTATUS (*ReadDirectory)(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_REQ *Request,
PVOID FileNode, PVOID Buffer, UINT64 Offset, ULONG Length,
PWSTR Pattern,
PULONG PBytesTransferred);
@@ -705,8 +668,6 @@ typedef struct _FSP_FILE_SYSTEM_INTERFACE
*
* @param FileSystem
* The file system on which this request is posted.
* @param Request
* The request posted by the kernel mode FSD.
* @param FileNode
* The file node of the reparse point.
* @param FileName
@@ -723,7 +684,6 @@ typedef struct _FSP_FILE_SYSTEM_INTERFACE
* SetReparsePoint
*/
NTSTATUS (*GetReparsePoint)(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_REQ *Request,
PVOID FileNode,
PWSTR FileName, PVOID Buffer, PSIZE_T PSize);
/**
@@ -731,8 +691,6 @@ typedef struct _FSP_FILE_SYSTEM_INTERFACE
*
* @param FileSystem
* The file system on which this request is posted.
* @param Request
* The request posted by the kernel mode FSD.
* @param FileNode
* The file node of the reparse point.
* @param FileName
@@ -748,7 +706,6 @@ typedef struct _FSP_FILE_SYSTEM_INTERFACE
* GetReparsePoint
*/
NTSTATUS (*SetReparsePoint)(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_REQ *Request,
PVOID FileNode,
PWSTR FileName, PVOID Buffer, SIZE_T Size);
/**
@@ -756,8 +713,6 @@ typedef struct _FSP_FILE_SYSTEM_INTERFACE
*
* @param FileSystem
* The file system on which this request is posted.
* @param Request
* The request posted by the kernel mode FSD.
* @param FileNode
* The file node of the reparse point.
* @param FileName
@@ -770,7 +725,6 @@ typedef struct _FSP_FILE_SYSTEM_INTERFACE
* STATUS_SUCCESS or error code.
*/
NTSTATUS (*DeleteReparsePoint)(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_REQ *Request,
PVOID FileNode,
PWSTR FileName, PVOID Buffer, SIZE_T Size);
/**
@@ -778,8 +732,6 @@ typedef struct _FSP_FILE_SYSTEM_INTERFACE
*
* @param FileSystem
* The file system on which this request is posted.
* @param Request
* The request posted by the kernel mode FSD.
* @param FileNode
* The file node of the file or directory to get stream information for.
* @param Buffer
@@ -794,7 +746,6 @@ typedef struct _FSP_FILE_SYSTEM_INTERFACE
* FspFileSystemAddStreamInfo
*/
NTSTATUS (*GetStreamInfo)(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_REQ *Request,
PVOID FileNode, PVOID Buffer, ULONG Length,
PULONG PBytesTransferred);
@@ -825,6 +776,11 @@ typedef struct _FSP_FILE_SYSTEM
SRWLOCK OpGuardLock;
BOOLEAN UmFileNodeIsUserContext2;
} FSP_FILE_SYSTEM;
typedef struct _FSP_FILE_SYSTEM_OPERATION_CONTEXT
{
FSP_FSCTL_TRANSACT_REQ *Request;
FSP_FSCTL_TRANSACT_RSP *Response;
} FSP_FILE_SYSTEM_OPERATION_CONTEXT;
/**
* Create a file system object.
*
@@ -924,6 +880,17 @@ FSP_API VOID FspFileSystemStopDispatcher(FSP_FILE_SYSTEM *FileSystem);
*/
FSP_API VOID FspFileSystemSendResponse(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_RSP *Response);
/**
* Get the current operation context.
*
* This function may be used only when servicing one of the FSP_FILE_SYSTEM_INTERFACE operations.
* The current operation context is stored in thread local storage. It allows access to the
* Request and Response associated with this operation.
*
* @return
* The current operation context.
*/
FSP_API FSP_FILE_SYSTEM_OPERATION_CONTEXT *FspFileSystemGetOperationContext(VOID);
static inline
PWSTR FspFileSystemMountPoint(FSP_FILE_SYSTEM *FileSystem)
{
@@ -1000,6 +967,12 @@ VOID FspFileSystemSetDebugLog(FSP_FILE_SYSTEM *FileSystem,
{
FileSystem->DebugLog = DebugLog;
}
static inline
BOOLEAN FspFileSystemIsOperationCaseSensitive(VOID)
{
FSP_FSCTL_TRANSACT_REQ *Request = FspFileSystemGetOperationContext()->Request;
return FspFsctlTransactCreateKind == Request->Kind && Request->Req.Create.CaseSensitive;
}
/*
* Operations
@@ -1266,10 +1239,54 @@ FSP_API NTSTATUS FspCreateSecurityDescriptor(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_REQ *Request,
PSECURITY_DESCRIPTOR ParentDescriptor,
PSECURITY_DESCRIPTOR *PSecurityDescriptor);
FSP_API NTSTATUS FspSetSecurityDescriptor(FSP_FILE_SYSTEM *FileSystem,
FSP_FSCTL_TRANSACT_REQ *Request,
/**
* Modify security descriptor.
*
* This is a helper for implementing the SetSecurity operation.
*
* @param InputDescriptor
* The input security descriptor to be modified.
* @param SecurityInformation
* Describes what parts of the InputDescriptor should be modified. This should contain
* the same value passed to the SetSecurity SecurityInformation parameter.
* @param ModificationDescriptor
* Describes the modifications to apply to the InputDescriptor. This should contain
* the same value passed to the SetSecurity ModificationDescriptor parameter.
* @param AccessToken
* A handle to a token that can be used to verify whether the requested modifications
* are allowed. This should contain the same value passed to the SetSecurity AccessToken
* parameter.
* @param PSecurityDescriptor [out]
* Pointer to a memory location that will receive the resulting security descriptor.
* This security descriptor can be later freed using FspDeleteSecurityDescriptor.
* @return
* STATUS_SUCCESS or error code.
* @see
* SetSecurity
* FspDeleteSecurityDescriptor
*/
FSP_API NTSTATUS FspSetSecurityDescriptor(
PSECURITY_DESCRIPTOR InputDescriptor,
SECURITY_INFORMATION SecurityInformation,
PSECURITY_DESCRIPTOR ModificationDescriptor,
HANDLE AccessToken,
PSECURITY_DESCRIPTOR *PSecurityDescriptor);
/**
* Delete security descriptor.
*
* This is a helper for implementing the SetSecurity operation.
*
* @param SecurityDescriptor
* The security descriptor to be deleted.
* @param CreateFunc
* Function used to create the security descriptor. This parameter should be
* set to FspSetSecurityDescriptor for the public API.
* @return
* STATUS_SUCCESS or error code.
* @see
* SetSecurity
* FspSetSecurityDescriptor
*/
FSP_API VOID FspDeleteSecurityDescriptor(PSECURITY_DESCRIPTOR SecurityDescriptor,
NTSTATUS (*CreateFunc)());
static inline