os: remove rom_block server component

This component is superceeded by vfs_block.

Issue #3781.

repos/os/recipes/src/rom_block/content.mk

@@ -1,2 +0,0 @@
-SRC_DIR = src/server/rom_block
-include $(GENODE_DIR)/repos/base/recipes/src/content.inc

repos/os/recipes/src/rom_block/hash

@@ -1 +0,0 @@
-2020-05-26 a923cb61a0968e423fbe06d8a437641017edacc3

repos/os/recipes/src/rom_block/used_apis

@@ -1,3 +0,0 @@
-base
-os
-block_session

repos/os/src/server/rom_block/README

@@ -1,6 +0,0 @@
-ROM loop device is an implementation of the block-session interface
-running as a client of a ROM session. It exports the requested ROM file as a
-block device, similiar to loop devices known in Linux. The example shows how
-to choose the right ROM file in its configuration and how to configure the exported block size.
-
-! <config file="image.iso" block_size="2048"/>

repos/os/src/server/rom_block/main.cc

@@ -1,125 +0,0 @@
-/*
- * \brief  Provide a rom-file as block device (aka loop devices)
- * \author Stefan Kalkowski
- * \date   2010-07-07
- */
-
-/*
- * Copyright (C) 2010-2017 Genode Labs GmbH
- *
- * This file is part of the Genode OS framework, which is distributed
- * under the terms of the GNU Affero General Public License version 3.
- */
-
-#include <base/attached_rom_dataspace.h>
-#include <base/component.h>
-#include <base/log.h>
-#include <block/component.h>
-#include <rom_session/connection.h>
-
-using namespace Genode;
-
-class Rom_block : public Block::Driver
-{
-	private:
-
-		Env                 &_env;
-		Rom_connection       _rom;
-		size_t               _blk_sz;
-		Dataspace_capability _file_cap  = _rom.dataspace();
-		addr_t               _file_addr = _env.rm().attach(_file_cap);
-		size_t               _file_sz   = Dataspace_client(_file_cap).size();
-		size_t               _blk_cnt   = _file_sz / _blk_sz;
-
-	public:
-
-		using String = Genode::String<64UL>;
-
-		Rom_block(Env &env, String const &name, size_t blk_sz)
-		: Block::Driver(env.ram()), _env(env), _rom(env, name.string()),
-		  _blk_sz(blk_sz) {}
-
-
-		/****************************
-		 ** Block-driver interface **
-		 ****************************/
-
-		Block::Session::Info info() const override
-		{
-			return { .block_size  = _blk_sz,
-			         .block_count = _blk_cnt,
-			         .align_log2  = log2(_blk_sz),
-			         .writeable   = false };
-		}
-
-		void read(Block::sector_t           block_number,
-		          size_t                    block_count,
-		          char*                     buffer,
-		          Block::Packet_descriptor &packet) override
-		{
-			/* sanity check block number */
-			if (block_number + block_count > _file_sz / _blk_sz) {
-				warning("requested blocks ", block_number, "-",
-				        block_number + block_count, " out of range!");
-				return;
-			}
-
-			size_t offset = (size_t) block_number * _blk_sz;
-			size_t size   = block_count  * _blk_sz;
-
-			/* copy file content to packet payload */
-			memcpy((void*)buffer, (void*)(_file_addr + offset), size);
-
-			ack_packet(packet);
-		}
-};
-
-
-struct Main
-{
-	Env &env;
-	Heap heap { env.ram(), env.rm() };
-
-	struct Factory : Block::Driver_factory
-	{
-		Env  &env;
-		Heap &heap;
-
-		Factory(Env &env, Heap &heap)
-		: env(env), heap(heap) {}
-
-		Block::Driver *create() override
-		{
-			Attached_rom_dataspace config(env, "config");
-
-			Rom_block::String const file =
-				config.xml().attribute_value("file", Rom_block::String());
-
-			size_t const blk_sz =
-				config.xml().attribute_value("block_size", 512UL);
-
-			log("using file=", file, " as device with block size ", blk_sz, ".");
-
-			try {
-				return new (&heap) Rom_block(env, file, blk_sz);
-			}
-			catch (Rom_connection::Rom_connection_failed) {
-				error("cannot open file ", file); }
-
-			throw Service_denied();
-		}
-
-		void destroy(Block::Driver *driver) override {
-			Genode::destroy(&heap, driver); }
-	} factory { env, heap };
-
-	enum { WRITEABLE = false };
-
-	Block::Root root { env.ep(), heap, env.rm(), factory, WRITEABLE };
-
-	Main(Env &env) : env(env) {
-		env.parent().announce(env.ep().manage(root)); }
-};
-
-
-void Component::construct(Genode::Env &env) { static Main server(env); }

repos/os/src/server/rom_block/target.mk

@@ -1,3 +0,0 @@
-TARGET = rom_block
-SRC_CC = main.cc
-LIBS   = base