# os.windows.OpenFile: Add \`USER_MAPPED_FILE\` as a possible error · gitcafe/zig

[View on GitCafe](https://git.cafe/gitcafe/zig/commit/4e078941d032c6ac0e1ea3c85989fd5d9a8747ba)

Repository: [gitcafe/zig](https://git.cafe/gitcafe/zig)

Visibility: public

Requested revision: 4e078941d032c6ac0e1ea3c85989fd5d9a8747ba

Requested commit: 4e078941d032c6ac0e1ea3c85989fd5d9a8747ba

Commit: 4e078941d032c6ac0e1ea3c85989fd5d9a8747ba

Tree: c25f9d1c45979468cd827a289f1d02b81f10c764

Author: Ryan Liptak

Committer: Jakub Konka

## Message

````
os.windows.OpenFile: Add `USER_MAPPED_FILE` as a possible error

Ran into this when using a program that uses CreateFileMapping and then trying to call `std.fs.createFile` on the mapped file. More info can be found here:

https://stackoverflow.com/questions/41844842/when-error-1224-error-user-mapped-file-occurs

Before:

```
error.Unexpected NTSTATUS=0xc0000243
C:\Users\Ryan\Programming\Zig\zig\lib\std\os\windows.zig:138:40: 0x7ff74e957466 in OpenFile (test.exe.obj)
        else => return unexpectedStatus(rc),
                                       ^
```

After:

```
FAIL (AccessDenied)
C:\Users\Ryan\Programming\Zig\zig\lib\std\os\windows.zig:137:30: 0x7ff7f5b776ea in OpenFile (test.exe.obj)
        .USER_MAPPED_FILE => return error.AccessDenied,
                             ^
```

````

## Parents

- [a27bfae0365e8d6d7da695a114497f97b4b20a43](https://git.cafe/gitcafe/zig/commit/a27bfae0365e8d6d7da695a114497f97b4b20a43?format=markdown)

[Source at this commit](https://git.cafe/gitcafe/zig/tree/4e078941d032c6ac0e1ea3c85989fd5d9a8747ba?format=markdown)