[#BloombergLP-bdls-FdStreamBuf_FileHandler-openMode]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdls.adoc[bdls]::xref:BloombergLP/bdls/FdStreamBuf_FileHandler.adoc[FdStreamBuf_FileHandler]::openMode
:relfileprefix: ../../../
:mrdocs:

Return the `bsl::ios_base` mode bits corresponding to this file handler. Note that this will be a union (bitwise‐OR) of a subset of the `bsl::ios_base` constants `in`, `out`, and `binary`.

== Synopsis

Declared in `<bdls_fdstreambuf.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
openMode() const;
----


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