CIM_DeviceFile class
The CIM_DeviceFile class represents a type of logical file, which represents a device. This convention is useful for operating systems that manage devices using a byte stream I/O model. The logical device that is associated with this file is specified using the CIM_DeviceAccessedByFile relationship.
Important
The DMTF (Distributed Management Task Force) CIM (Common Information Model) classes are the parent classes upon which WMI classes are built. WMI currently supports only the CIM 2.x version schemas.
The following syntax is simplified from Managed Object Format (MOF) code and includes all inherited properties. Properties are listed in alphabetic order, not MOF order.
Syntax
[Abstract, UUID("{4333BD60-E3D1-11d2-8601-0000F8102E5F}"), AMENDMENT]
class CIM_DeviceFile : CIM_LogicalFile
{
uint32 AccessMask;
boolean Archive;
string Caption;
boolean Compressed;
string CompressionMethod;
string CreationClassName;
datetime CreationDate;
string CSCreationClassName;
string CSName;
string Description;
string Drive;
string EightDotThreeFileName;
boolean Encrypted;
string EncryptionMethod;
string Extension;
string FileName;
uint64 FileSize;
string FileType;
string FSCreationClassName;
string FSName;
boolean Hidden;
datetime InstallDate;
uint64 InUseCount;
datetime LastAccessed;
datetime LastModified;
string Name;
string Path;
boolean Readable;
string Status;
boolean System;
boolean Writeable;
};
Members
The CIM_DeviceFile class has these types of members:
Methods
The CIM_DeviceFile class has these methods.
| Method | Description |
|---|---|
| ChangeSecurityPermissions | Changes the security permissions for the logical file specified in the object path. Not implemented by WMI. |
| ChangeSecurityPermissionsEx | Changes the security permissions for the logical file specified in the object path. Not implemented by WMI. |
| Compress | Compresses the logical file (or directory) specified in the object path. Not implemented by WMI. |
| CompressEx | Compresses the logical file (or directory) specified in the object path. Not implemented by WMI. |
| Copy | Copies the logical file (or directory) specified in the object path to the location specified by the input parameter. Not implemented by WMI. |
| CopyEx | Copies the logical file (or directory) specified in the object path to the location specified by the input parameter. Not implemented by WMI. |
| Delete | Deletes the logical file (or directory) specified in the object path. Not implemented by WMI. |
| DeleteEx | Deletes the logical file (or directory) specified in the object path. Not implemented by WMI. |
| GetEffectivePermission | Determines whether the caller has the aggregated permissions specified by the Permission argument. Not implemented by WMI. |
| Rename | Renames the logical file (or directory) specified in the object path. Not implemented by WMI. |
| TakeOwnerShip | Obtains ownership of the logical file specified in the object path. Not implemented by WMI. |
| TakeOwnerShipEx | Obtains ownership of the logical file specified in the object path. Not implemented by WMI. |
| Uncompress | Uncompresses the logical file (or directory) specified in the object path. Not implemented by WMI. |
| UncompressEx | Uncompresses the logical file (or directory) specified in the object path. Not implemented by WMI. |
Properties
The CIM_DeviceFile class has these properties.
-
AccessMask
-
-
Data type: uint32
-
Access type: Read-only
-
Qualifiers: Schema ("Win32"), DisplayName ("Access Rights")
Bit array that represents the access rights to the given file or directory held by the user or group on whose behalf the instance is returned. On FAT volumes, FULL_ACCESS is returned, which indicates that no security has been set on the object.
This property is inherited from CIM_LogicalFile.
-
-
FILE_READ_DATA (file) or FILE_LIST_DIRECTORY (directory) (1)
-
Grants the right to read data from the file. For a directory, this value grants the right to list the contents of the directory.
-
FILE_WRITE_DATA (file) or FILE_ADD_FILE (directory) (2)
-
Grants the right to write data to the file. For a directory, this value grants the right to create a file in the directory.
-
FILE_APPEND_DATA (file) or FILE_ADD_SUBDIRECTORY (directory) (4)
-
Grants the right to append data to the file. For a directory, this value grants the right to create a subdirectory.
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FILE_READ_EA (8)
-
Grants the right to read extended attributes.
-
FILE_WRITE_EA (16)
-
Grants the right to write extended attributes.
-
FILE_EXECUTE (file) or FILE_TRAVERSE (directory) (32)
-
Grants the right to execute a file. For a directory, the directory can be traversed.
-
FILE_DELETE_CHILD (directory) (64)
-
Grants the right to delete a directory and all the files it contains (its children), even if the files are read-only.
-
FILE_READ_ATTRIBUTES (128)
-
Grants the right to read file attributes.
-
FILE_WRITE_ATTRIBUTES (256)
-
Grants the right to change file attributes.
-
DELETE (65536)
-
Grants delete access.
-
READ_CONTROL (131072)
-
Grants read access to the security descriptor and owner.
-
WRITE_DAC (262144)
-
Grants write access to the discretionary ACL.
-
WRITE_OWNER (524288)
-
Assigns the write owner.
-
SYNCHRONIZE (1048576)
-
Synchronizes access and allows a process to wait for an object to enter the signaled state.
Archive
-
Data type: boolean
-
Access type: Read-only
-
Qualifiers: Schema ("Win32"), DisplayName ("Should Be Archived")
If True, the file should be archived.
This property is inherited from CIM_LogicalFile.
Caption
-
Data type: string
-
Access type: Read-only
-
Qualifiers: MaxLen (64), DisplayName ("Caption")
Short textual description of the object.
This property is inherited from CIM_ManagedSystemElement.
Compressed
-
Data type: boolean
-
Access type: Read-only
-
Qualifiers: Schema ("Win32"), DisplayName ("Compressed")
If True, the file is compressed.
This property is inherited from CIM_LogicalFile.
CompressionMethod
-
Data type: string
-
Access type: Read-only
-
Qualifiers: DisplayName ("Compression Method")
Free-form string that indicates the algorithm or tool used to compress the logical file. If the compression scheme is unknown or not described, use "Unknown". If the logical file is compressed, but the compression scheme is unknown or not described, use "Compressed". If the logical file is not compressed, use "Not Compressed".
This property is inherited from CIM_LogicalFile.
CreationClassName
-
Data type: string
-
Access type: Read-only
-
Qualifiers: CIM_Key, DisplayName ("Class Name")
Name of the class.
This property is inherited from CIM_LogicalFile.
CreationDate
-
Data type: datetime
-
Access type: Read-only
-
Qualifiers: DisplayName ("Creation Date")
File's creation date.
This property is inherited from CIM_LogicalFile.
CSCreationClassName
-
Data type: string
-
Access type: Read-only
-
Qualifiers: Propagated ("CIM_FileSystem.CSCreationClassName"), CIM_Key, DisplayName ("Computer System Class Name")
Class of the computer system.
This property is inherited from CIM_LogicalFile.
CSName
-
Data type: string
-
Access type: Read-only
-
Qualifiers: Propagated ("CIM_FileSystem.CSName"), CIM_Key, DisplayName ("Computer System Name")
Name of the computer system.
This property is inherited from CIM_LogicalFile.
Description
-
Data type: string
-
Access type: Read-only
-
Qualifiers: DisplayName ("Description")
Textual description of the object.
This property is inherited from CIM_ManagedSystemElement.
Drive
-
Data type: string
-
Access type: Read-only
-
Qualifiers: Fixed, Schema ("Win32"), DisplayName ("Drive")
Drive letter (including the colon that follows the drive letter) of the file. This property is inherited from CIM_LogicalFile.
Example: "c:"
EightDotThreeFileName
-
Data type: string
-
Access type: Read-only
-
Qualifiers: Schema ("Win32"), DisplayName ("Eight Dot Three File Name")
DOS-compatible file name for the file. This property is inherited from CIM_LogicalFile.
Example: "c:\progra~1"
Encrypted
-
Data type: boolean
-
Access type: Read-only
-
Qualifiers: Schema ("Win32"), DisplayName ("Encrypted")
If True, the file is encrypted.
This property is inherited from CIM_LogicalFile.
EncryptionMethod
-
Data type: string
-
Access type: Read-only
-
Qualifiers: DisplayName ("Encryption Method")
Free-form string that identifies the algorithm or tool used to encrypt a logical file. If the encryption scheme is not indulged (for security reasons, for example), use "Unknown". If the file is encrypted, but either its encryption scheme is unknown or not disclosed, use "Encrypted". If the logical file is not encrypted, use "Not Encrypted".
This property is inherited from CIM_LogicalFile.
Extension
-
Data type: string
-
Access type: Read-only
-
Qualifiers: Fixed, Schema ("Win32"), DisplayName ("File Extension")
File name extension without the preceding period (dot).
This property is inherited from CIM_LogicalFile.
Example: "txt", "mof", "mdb"
FileName
-
Data type: string
-
Access type: Read-only
-
Qualifiers: Fixed, Schema ("Win32"), DisplayName ("File Name")
File name without the file name extension.
This property is inherited from CIM_LogicalFile.
Example: "MyDataFile"
FileSize
-
Data type: uint64
-
Access type: Read-only
-
Qualifiers: DisplayName ("Size"), Units ("bytes")
Size of the file, in bytes.
This property is inherited from CIM_LogicalFile.
For more information about using uint64 values in scripts, see Scripting in WMI.
FileType
-
Data type: string
-
Access type: Read-only
-
Qualifiers: Schema ("Win32"), DisplayName ("File Type")
Descriptor that represents the file type (indicated by the Extension property).
This property is inherited from CIM_LogicalFile.
FSCreationClassName
-
Data type: string
-
Access type: Read-only
-
Qualifiers: Propagated ("CIM_FileSystem.CreationClassName"), CIM_Key, DisplayName ("File System Class Name")
Class of the file system.
This property is inherited from CIM_LogicalFile.
FSName
-
Data type: string
-
Access type: Read-only
-
Qualifiers: Propagated ("CIM_FileSystem.Name"), CIM_Key, DisplayName ("File System Name")
Name of the file system.
This property is inherited from CIM_LogicalFile.
Hidden
-
Data type: boolean
-
Access type: Read-only
-
Qualifiers: Schema ("Win32"), DisplayName ("Hidden")
If True, the file is hidden.
This property is inherited from CIM_LogicalFile.
InstallDate
-
Data type: datetime
-
Access type: Read-only
-
Qualifiers: MappingStrings ("MIF.DMTF|ComponentID|001.5"), DisplayName ("Install Date")
Date and time when the object was installed. This property does not need a value to indicate that the object is installed.
This property is inherited from CIM_ManagedSystemElement.
InUseCount
-
Data type: uint64
-
Access type: Read-only
-
Qualifiers: DisplayName ("Current File Open Count")
Number of "file opens" that are currently active against the file.
This property is inherited from CIM_LogicalFile.
For more information about using uint64 values in scripts, see Scripting in WMI.
LastAccessed
-
Data type: datetime
-
Access type: Read-only
-
Qualifiers: DisplayName ("Last Accessed")
Date and time that the file was last accessed.
This property is inherited from CIM_LogicalFile.
LastModified
-
Data type: datetime
-
Access type: Read-only
-
Qualifiers: DisplayName ("Last Modified")
Date and time that the file was last modified.
This property is inherited from CIM_LogicalFile.
Name
-
Data type: string
-
Access type: Read-only
-
Qualifiers: Key
Inherited name that serves as a key of a logical file instance within a file system (provide full path names).
This property is inherited from CIM_ManagedSystemElement.
Example: "C:\Windows\system\win.ini"
Path
-
Data type: string
-
Access type: Read-only
-
Qualifiers: Fixed, Schema ("Win32"), DisplayName ("Path")
Path of the file including leading and trailing backslashes. This property is inherited from CIM_LogicalFile.
Example: "\windows\system\"
Readable
-
Data type: boolean
-
Access type: Read-only
-
Qualifiers: DisplayName ("Readable")
If True, the file can be read.
This property is inherited from CIM_LogicalFile.
Status
-
Data type: string
-
Access type: Read-only
-
Qualifiers: MaxLen (10), DisplayName ("Status")
String that indicates the current status of the object. Operational and nonoperational status can be defined. Operational status can include "OK", "Degraded", and "Pred Fail". "Pred Fail" indicates that an element is functioning properly, but is predicting a failure (for example, a SMART-enabled hard disk drive).
Nonoperational status can include "Error", "Starting", "Stopping", and "Service". "Service" can apply during disk mirror-resilvering, reloading a user permissions list, or other administrative work. Not all such work is online, but the managed element is neither "OK" nor in one of the other states.
This property is inherited from CIM_ManagedSystemElement.
Values include the following:
OK ("OK")
Error ("Error")
Degraded ("Degraded")
Unknown ("Unknown")
Pred Fail ("Pred Fail")
Starting ("Starting")
Stopping ("Stopping")
Service ("Service")
Stressed ("Stressed")
NonRecover ("NonRecover")
No Contact ("No Contact")
Lost Comm ("Lost Comm")
System
-
Data type: boolean
-
Access type: Read-only
-
Qualifiers: Schema ("Win32"), DisplayName ("System File")
If True, the file is a system file.
This property is inherited from CIM_LogicalFile.
Writeable
-
Data type: boolean
-
Access type: Read-only
-
Qualifiers: DisplayName ("Writeable")
If True, the file can be written.
This property is inherited from CIM_LogicalFile.
Remarks
The CIM_DeviceFile class is derived from CIM_LogicalFile.
WMI does not implement this class.
This documentation is derived from the CIM class descriptions published by the DMTF. Microsoft may have made changes to correct minor errors, conform to Microsoft SDK documentation standards, or provide more information.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client |
Windows Vista |
| Minimum supported server |
Windows Server 2008 |
| Namespace |
Root\CIMV2 |
| MOF |
|
| DLL |
|