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go/doc/next/6-stdlib/99-minor/os/73676.md
qmuntal 252c901125 os,syscall: pass file flags to CreateFile on Windows 
Add support for FILE_FLAG_* constants in the flag argument of
os.OpenFile and syscall.Open on Windows.

Passing invalid flags will result in an error.

Updates #73676

Change-Id: Ie215a3dd14f0d74141533f0a07865a02a67a3846
Reviewed-on: https://go-review.googlesource.com/c/go/+/699415
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2025-08-29 07:25:08 -07:00

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On Windows, the [OpenFile] flag parameter can now contain any combination of Windows-specific file flags, such as FILE_FLAG_OVERLAPPED and FILE_FLAG_SEQUENTIAL_SCAN, for control of file or device caching behavior, access modes, and other special-purpose flags.