fsOpenFlags (ULONG) - input

The action to be taken depending on whether the file exists or does not exist.

This parameter contains the following bit fields.:

Bits

Description
31-8
Reserved, must be 0.
7-4
The following flags apply if the file does not exist:

0000

OPEN_ACTION_FAIL_IF_NEW
Open an existing file; fail if the file does not exist.
0001
OPEN_ACTION_CREATE_IF_NEW
Create the file if the file does not exist.
3-0
The following flags apply if the file does not exist:

0000

OPEN_ACTION_FAIL_IF_EXISTS
Open the file; fail if the file already exists.
0001
OPEN_ACTION_OPEN_IF_EXISTS
Open the file if it already exists.

0010
OPEN_ACTION_REPLACE_IF_EXISTS
Replace the file if it already exists.

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