2.4.33 FileNetworkOpenInformation
This information class is used to query for information that is commonly needed when a file is opened across a network.<136>
A FILE_NETWORK_OPEN_INFORMATION data element, defined as follows, is returned by the server.
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CreationTime |
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LastAccessTime |
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LastWriteTime |
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ChangeTime |
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AllocationSize |
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EndOfFile |
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FileAttributes |
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Reserved |
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CreationTime (8 bytes): The time when the file was created; see section 2.1.1. The value of this field MUST be greater than or equal to 0.
LastAccessTime (8 bytes): The last time the file was accessed; see section 2.1.1. The value of this field MUST be greater than or equal to 0.
LastWriteTime (8 bytes): The last time information was written to the file; see section 2.1.1. The value of this field MUST be greater than or equal to 0.
ChangeTime (8 bytes): The last time the file was changed; see section 2.1.1. The value of this field MUST be greater than or equal to 0.
AllocationSize (8 bytes): A 64-bit signed integer that contains the file allocation size, in bytes. The value of this field MUST be an integer multiple of the cluster size.
EndOfFile (8 bytes): A 64-bit signed integer that contains the absolute new end-of-file position as a byte offset from the start of the file. EndOfFile specifies the offset to the byte immediately following the last valid byte in the file. Because this value is zero-based, it actually refers to the first free byte in the file. That is, it is the offset from the beginning of the file at which new bytes appended to the file will be written. The value of this field MUST be greater than or equal to 0.
FileAttributes (4 bytes): A 32-bit unsigned integer that contains the file attributes. Valid attributes are as specified in section 2.6.
Reserved (4 bytes): A 32-bit field. This field is reserved. This field can be set to any value and MUST be ignored.
This operation returns a status code as specified in section 2.2. Upon success, the status code returned by the function that processes this file information class is STATUS_SUCCESS. The most common error codes are listed in the following table.
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Error code |
Meaning |
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STATUS_INFO_LENGTH_MISMATCH 0xC0000004 |
The specified information record length does not match the length that is required for the specified information class. |
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STATUS_ACCESS_DENIED 0xC0000022 |
The handle was not opened to read file data or file attributes. |