Some CreateOptions flags require that certain access flags be set in DesiredAccess when NtCreateFile is called. Generic access rights can only be specified for a file they cannot be specified for a directory. This value is irrelevant for device and intermediate drivers. STANDARD_RIGHTS_EXECUTE, FILE_EXECUTE, FILE_READ_ATTRIBUTES, and SYNCHRONIZE. STANDARD_RIGHTS_WRITE, FILE_WRITE_DATA, FILE_WRITE_ATTRIBUTES, FILE_WRITE_EA, FILE_APPEND_DATA, and SYNCHRONIZE STANDARD_RIGHTS_READ, FILE_READ_DATA, FILE_READ_ATTRIBUTES, FILE_READ_EA, and SYNCHRONIZE The I/O manager defines the actual mapping. (Note that "correspond" means "maps to" and does not mean that the value of the generic right is "equal to" the value of the bitwise OR of its specific rights mapping). Generic access rights for file objects correspond to specific access rights as shown in the following table. The caller can also specify the following generic access rights (rights that apply to all object types, where the meaning of each generic access right is specific to the object type). This flag is irrelevant for device and intermediate drivers.ĭo not specify FILE_READ_DATA, FILE_WRITE_DATA, FILE_APPEND_DATA, or FILE_EXECUTE when you create or open a directory. Use system paging I/O to read data from the file into memory. This flag is irrelevant for device and intermediate drivers.
For more information, see the description of the FileAttributes parameter.Ĭhange the extended attributes (EAs) of the file. Read the extended attributes (EAs) of the file. For more information, see the description of the FileAttributes parameter. In addition to the standard access rights that are defined for all types of objects, the caller can specify any of the following specific access rights that is, rights that are specific to files.
Specifies an ACCESS_MASK value that determines the requested access to the object. PLARGE_INTEGER AllocationSize,Ī pointer to a HANDLE variable that receives a handle to the file. Syntax _kernel_entry NTSYSCALLAPI NTSTATUS NtCreateFile( The NtCreateFile routine creates a new file or opens an existing file.
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