Boost C++ Libraries

...one of the most highly regarded and expertly designed C++ library projects in the world. — Herb Sutter and Andrei Alexandrescu, C++ Coding Standards

This version of Boost is under active development. You are currently in the develop branch. The current version is 1.91.0.

basic_file::open (4 of 4 overloads)

basic_file::open (4 of 4 overloads)

Open the file using the specified path.

void open(
    const std::string & path,
    file_base::flags open_flags,
    boost::system::error_code & ec);

This function opens the file so that it will use the specified path.

Parameters

path: The path name identifying the file to be opened.
open_flags: A set of flags that determine how the file should be opened.
ec: Set to indicate what error occurred, if any.

Exactly one of the following file_base::flags values must be specified:

flags::read_only
flags::write_only
flags::read_write

The following flags may be bitwise or-ed in addition:

flags::append
flags::create
flags::exclusive
flags::truncate
flags::sync_all_on_write

Example

boost::asio::stream_file file(my_context);
boost::system::error_code ec;
file.open("/path/to/my/file", boost::asio::stream_file::read_only, ec);
if (ec)
{
  // An error occurred.
}