posix_file::read

Read data from a location in the file.

void
read(
    std::uint64_t offset,
    void* buffer,
    std::size_t bytes,
    error_code& ec);

The file must be open.

offset: The position in the file to read from, expressed as a byte offset from the beginning.
buffer: The location to store the data.
bytes: The number of bytes to read.
ec: Set to the error, if any occurred.