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vfs: remove unused Fs_file_system::_read method

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Norman Feske 2022-12-12 16:11:27 +01:00 committed by Christian Helmuth
parent 8384d7b5ed
commit e5272b65a1
1 changed files with 0 additions and 54 deletions
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54
repos/os/src/lib/vfs/fs_file_system.h
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@ -452,60 +452,6 @@ class Vfs::Fs_file_system : public File_system, private Remote_io
Fs_vfs_handle_queue _congested_handles { };
file_size _read(Fs_vfs_handle &handle, void *buf,
file_size const count, file_size const seek_offset)
{
::File_system::Session::Tx::Source &source = *_fs.tx();
using ::File_system::Packet_descriptor;
if (!source.ready_to_submit())
throw ::File_system::Session::Tx::Source::Saturated_submit_queue();
file_size const max_packet_size = source.bulk_buffer_size() / 2;
file_size const clipped_count = min(max_packet_size, count);
/* XXX check if alloc_packet() will succeed! */
Packet_descriptor const packet_in(source.alloc_packet((size_t)clipped_count),
handle.file_handle(),
Packet_descriptor::READ,
(size_t)clipped_count,
seek_offset);
/* wait until packet was acknowledged */
handle.queued_read_state = Handle_state::Queued_state::QUEUED;
_submit_packet(packet_in);
while (handle.queued_read_state != Handle_state::Queued_state::ACK)
_env.env().ep().wait_and_dispatch_one_io_signal();
/* obtain result packet descriptor with updated status info */
Packet_descriptor const packet_out = handle.queued_read_packet;
handle.queued_read_state = Handle_state::Queued_state::IDLE;
handle.queued_read_packet = Packet_descriptor();
if (!packet_out.succeeded()) {
/* could be EOF or a real error */
try {
::File_system::Status status = _fs.status(handle.file_handle());
if (seek_offset < status.size)
Genode::warning("unexpected failure on file-system read");
}
catch (::File_system::Invalid_handle) { }
catch (::File_system::Unavailable) { }
}
file_size const read_num_bytes = min((file_size)packet_out.length(), count);
memcpy(buf, source.packet_content(packet_out), (size_t)read_num_bytes);
source.release_packet(packet_out);
return read_num_bytes;
}
Write_result _write(Fs_vfs_handle &handle, file_size const seek_offset,
const char *buf, file_size count, file_size &out_count)
{