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2.2.1.3.1 FileId Generation

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64-bit file identifiers (FileIds) are generated on SMB servers. The generation of FileIds MUST satisfy the following constraints:

  • The FileId MUST be a 64-bit opaque value.

  • The FileId MUST be unique for a file on a given object store.<14>

  • The FileId for a file MUST persist for the lifetime of a file on a given object store. A FileId MUST NOT be changed when a file is renamed. When the file is deleted, the FileId MAY be reused.

  • All possible values for FileId are valid.