[#BloombergLP-bdls-FilesystemUtil-FileIOPolicy]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdls.adoc[bdls]::xref:BloombergLP/bdls/FilesystemUtil.adoc[FilesystemUtil]::FileIOPolicy
:relfileprefix: ../../../
:mrdocs:

Enumeration used to distinguish between different sets of actions permitted on an open file descriptor.

== Synopsis

Declared in `<bdls_filesystemutil.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
enum FileIOPolicy;
----

== Members

[cols="1,4"]
|===
| Name| Description
| `e_READ_ONLY` 
| Allow reading only.
| `e_WRITE_ONLY` 
| Allow writing only.
| `e_APPEND_ONLY` 
| Allow appending to end‐of‐file only.
| `e_READ_WRITE` 
| Allow both reading and writing.
| `e_READ_APPEND` 
| Allow both reading and appending to end‐of‐file.
|===



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