Files
reactos/dll
Mohammad Amin Mollazadeh 91146de1cd [KERNEL32] BasepCopyFileExW: Check dwCopyFlags properly (#9133)
The function didn't check if `COPY_FILE_FAIL_IF_EXISTS` bit flag is set
or not, always failing if _any_ flags were set and the destination file
already existed.

This behavior was probably implemented under assumption that
`COPY_FILE_FAIL_IF_EXISTS` is the only valid flag, but it's not the case.
There are other flags, so this was breaking applications when they intend
to overwrite a file with e.g. `COPY_FILE_ALLOW_DECRYPTED_DESTINATION`.

These functions were affected by the problem:
- CopyFileEx - exposed by Total Commander not being able to overwrite file
- PrivCopyFileEx
- MoveFileWithProgress

Also cover `ERROR_ALREADY_EXISTS` returned by CreateFileW to match Windows
behavior, making the API tests pass.

CORE-10271
2026-06-16 16:10:23 +03:00
..