[#node-BlockManager-OpenBlockFile]
= xref:node.adoc[node]::xref:node/BlockManager.adoc[BlockManager]::OpenBlockFile
:relfileprefix: ../../
:mrdocs:

Open a block file (blk?????.dat)

== Synopsis

Declared in `<node/blockstorage.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:AutoFile.adoc[AutoFile]
OpenBlockFile(
    xref:FlatFilePos.adoc[FlatFilePos] const& pos,
    bool fReadOnly) const;
----

== Return Value

An open file handle for the block file.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *pos*
| Position identifying the block file and offset.
| *fReadOnly*
| Whether to open the file read‐only.
|===


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