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base: lay groundwork for base-linux caps change

Browse Source 
Include the necessary hooks to introduce file descriptor
based capabilities in base linux.

Issue #3581
This commit is contained in:
Stefan Thöni 2020-02-19 11:35:13 +01:00 committed by Christian Helmuth
parent 5eaaee0dbe
commit a7a9855493
28 changed files with 249 additions and 78 deletions
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2
repos/base-fiasco/lib/mk/base-fiasco-common.mk
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@ -10,5 +10,7 @@ LIBS += startup-fiasco syscall-fiasco
SRC_CC += capability.cc capability_raw.cc
SRC_CC += rpc_dispatch_loop.cc
SRC_CC += rpc_entrypoint_manage.cc
SRC_CC += thread.cc thread_bootstrap.cc thread_myself.cc
SRC_CC += stack_area_addr.cc
SRC_CC += rpc_entry.cc

1
repos/base-fiasco/lib/mk/base-fiasco.mk
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@ -6,3 +6,4 @@ SRC_CC += thread_start.cc
SRC_CC += cache.cc
SRC_CC += capability_space.cc
SRC_CC += signal_transmitter.cc signal.cc
SRC_CC += platform.cc

14
repos/base-fiasco/src/lib/base/ipc.cc
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@ -204,10 +204,11 @@ void Genode::ipc_reply(Native_capability caller, Rpc_exception_code exc,
}
Genode::Rpc_request Genode::ipc_reply_wait(Reply_capability const &last_caller,
Rpc_exception_code exc,
Msgbuf_base &reply_msg,
Msgbuf_base &request_msg)
Genode::Rpc_request Genode::ipc_reply_wait(Reply_capability const &last_caller,
Rpc_exception_code exc,
Msgbuf_base &reply_msg,
Msgbuf_base &request_msg,
Rpc_entrypoint::Native_context &)
{
using namespace Fiasco;
@ -274,9 +275,10 @@ Genode::Rpc_request Genode::ipc_reply_wait(Reply_capability const &last_caller,
}
Ipc_server::Ipc_server()
Ipc_server::Ipc_server(Rpc_entrypoint::Native_context& native_context)
:
Native_capability(Capability_space::import(Fiasco::l4_myself(), Rpc_obj_key()))
Native_capability(Capability_space::import(Fiasco::l4_myself(), Rpc_obj_key())),
_native_context(native_context)
{ }

3
repos/base-foc/lib/mk/base-foc-common.inc
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@ -10,6 +10,9 @@ LIBS += syscall-foc startup-foc
SRC_CC += spin_lock.cc cap_map.cc
SRC_CC += rpc_dispatch_loop.cc
SRC_CC += rpc_entrypoint_manage.cc
SRC_CC += thread.cc thread_bootstrap.cc thread_myself.cc utcb.cc
SRC_CC += capability.cc
SRC_CC += signal_source_client.cc
SRC_CC += platform.cc
SRC_CC += rpc_entry.cc

14
repos/base-foc/src/lib/base/ipc.cc
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@ -316,10 +316,11 @@ void Genode::ipc_reply(Native_capability, Rpc_exception_code exc,
}
Genode::Rpc_request Genode::ipc_reply_wait(Reply_capability const &,
Rpc_exception_code exc,
Msgbuf_base &reply_msg,
Msgbuf_base &request_msg)
Genode::Rpc_request Genode::ipc_reply_wait(Reply_capability const &,
Rpc_exception_code exc,
Msgbuf_base &reply_msg,
Msgbuf_base &request_msg,
Rpc_entrypoint::Native_context &)
{
Receive_window &rcv_window = Thread::myself()->native_thread().rcv_window;
@ -370,9 +371,10 @@ Genode::Rpc_request Genode::ipc_reply_wait(Reply_capability const &,
}
Ipc_server::Ipc_server()
Ipc_server::Ipc_server(Rpc_entrypoint::Native_context& native_context)
:
Native_capability((Cap_index*)Fiasco::l4_utcb_tcr()->user[Fiasco::UTCB_TCR_BADGE])
Native_capability((Cap_index*)Fiasco::l4_utcb_tcr()->user[Fiasco::UTCB_TCR_BADGE]),
_native_context(native_context)
{
Thread::myself()->native_thread().rcv_window.init();
}

2
repos/base-hw/lib/mk/base-hw-common.mk
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@ -10,5 +10,7 @@ include $(BASE_DIR)/lib/mk/base-common.inc
LIBS += syscall-hw
SRC_CC += rpc_dispatch_loop.cc
SRC_CC += rpc_entrypoint_manage.cc
SRC_CC += thread.cc thread_myself.cc thread_bootstrap.cc
SRC_CC += signal_transmitter.cc
SRC_CC += rpc_entry.cc

1
repos/base-hw/lib/mk/base-hw.mk
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@ -7,5 +7,6 @@ SRC_CC += raw_write_string.cc
SRC_CC += signal_receiver.cc
SRC_CC += stack_area_addr.cc
SRC_CC += native_utcb.cc
SRC_CC += platform.cc
LIBS += startup-hw base-hw-common cxx timeout-hw

14
repos/base-hw/src/lib/base/ipc.cc
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@ -130,10 +130,11 @@ void Genode::ipc_reply(Native_capability, Rpc_exception_code exc,
}
Genode::Rpc_request Genode::ipc_reply_wait(Reply_capability const &,
Rpc_exception_code exc,
Msgbuf_base &reply_msg,
Msgbuf_base &request_msg)
Genode::Rpc_request Genode::ipc_reply_wait(Reply_capability const &,
Rpc_exception_code exc,
Msgbuf_base &reply_msg,
Msgbuf_base &request_msg,
Rpc_entrypoint::Native_context &)
{
Native_utcb &utcb = *Thread::myself()->utcb();
@ -162,10 +163,11 @@ Genode::Rpc_request Genode::ipc_reply_wait(Reply_capability const &,
}
Ipc_server::Ipc_server()
Ipc_server::Ipc_server(Rpc_entrypoint::Native_context& _native_context)
:
Native_capability(Thread::myself() ? Thread::myself()->native_thread().cap
: Hw::_main_thread_cap)
: Hw::_main_thread_cap),
_native_context(_native_context)
{ }

3
repos/base-linux/lib/mk/base-linux-common.mk
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@ -10,5 +10,8 @@ LIBS += syscall-linux
SRC_CC += region_map_mmap.cc debug.cc
SRC_CC += rpc_dispatch_loop.cc
SRC_CC += rpc_entrypoint_manage.cc
SRC_CC += thread_env.cc
SRC_CC += capability.cc
SRC_CC += platform.cc
SRC_CC += rpc_entry.cc

14
repos/base-linux/src/lib/base/ipc.cc
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@ -462,10 +462,11 @@ void Genode::ipc_reply(Native_capability caller, Rpc_exception_code exc,
}
Genode::Rpc_request Genode::ipc_reply_wait(Reply_capability const &last_caller,
Rpc_exception_code exc,
Msgbuf_base &reply_msg,
Msgbuf_base &request_msg)
Genode::Rpc_request Genode::ipc_reply_wait(Reply_capability const &last_caller,
Rpc_exception_code exc,
Msgbuf_base &reply_msg,
Msgbuf_base &request_msg,
Rpc_entrypoint::Native_context &)
{
/* when first called, there was no request yet */
if (last_caller.valid() && exc.value != Rpc_exception_code::INVALID_OBJECT)
@ -514,9 +515,10 @@ Genode::Rpc_request Genode::ipc_reply_wait(Reply_capability const &last_caller,
}
Ipc_server::Ipc_server()
Ipc_server::Ipc_server(Rpc_entrypoint::Native_context& _native_context)
:
Native_capability(Capability_space::import(Rpc_destination(), Rpc_obj_key()))
Native_capability(Capability_space::import(Rpc_destination(), Rpc_obj_key())),
_native_context(_native_context)
{
/*
* If 'thread' is 0, the constructor was called by the main thread. By

1
repos/base-nova/lib/mk/base-nova.mk
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@ -4,3 +4,4 @@ LIBS += base-nova-common cxx timeout
SRC_CC += thread_start.cc
SRC_CC += cache.cc
SRC_CC += signal.cc
SRC_CC += platform.cc

2
repos/base-okl4/lib/mk/base-okl4-common.mk
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@ -10,5 +10,7 @@ LIBS += startup-okl4 syscall-okl4
SRC_CC += capability.cc capability_raw.cc
SRC_CC += rpc_dispatch_loop.cc
SRC_CC += rpc_entrypoint_manage.cc
SRC_CC += thread.cc thread_bootstrap.cc thread_myself.cc
SRC_CC += stack_area_addr.cc
SRC_CC += rpc_entry.cc

1
repos/base-okl4/lib/mk/base-okl4.mk
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@ -6,3 +6,4 @@ SRC_CC += cache.cc
SRC_CC += capability_space.cc
SRC_CC += signal_transmitter.cc
SRC_CC += signal.cc
SRC_CC += platform.cc

14
repos/base-okl4/src/lib/base/ipc.cc
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@ -195,10 +195,11 @@ void Genode::ipc_reply(Native_capability caller, Rpc_exception_code exc,
}
Genode::Rpc_request Genode::ipc_reply_wait(Reply_capability const &last_caller,
Rpc_exception_code exc,
Msgbuf_base &reply_msg,
Msgbuf_base &request_msg)
Genode::Rpc_request Genode::ipc_reply_wait(Reply_capability const &last_caller,
Rpc_exception_code exc,
Msgbuf_base &reply_msg,
Msgbuf_base &request_msg,
Rpc_entrypoint::Native_context &)
{
L4_MsgTag_t rcv_tag;
@ -237,9 +238,10 @@ static inline Okl4::L4_ThreadId_t thread_get_my_global_id()
}
Ipc_server::Ipc_server()
Ipc_server::Ipc_server(Rpc_entrypoint::Native_context& _native_context)
:
Native_capability(Capability_space::import(thread_get_my_global_id(), Rpc_obj_key()))
Native_capability(Capability_space::import(thread_get_my_global_id(), Rpc_obj_key())),
_native_context(_native_context)
{ }

2
repos/base-pistachio/lib/mk/base-pistachio-common.mk
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@ -10,8 +10,10 @@ LIBS += startup-pistachio syscall-pistachio
SRC_CC += capability.cc capability_raw.cc
SRC_CC += rpc_dispatch_loop.cc
SRC_CC += rpc_entrypoint_manage.cc
SRC_CC += thread.cc thread_bootstrap.cc thread_myself.cc
SRC_CC += stack_area_addr.cc
SRC_CC += rpc_entry.cc
# suppress warning caused by Pistachio's 'l4/message.h'
CC_WARN += -Wno-array-bounds

1
repos/base-pistachio/lib/mk/base-pistachio.mk
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@ -7,3 +7,4 @@ SRC_CC += cache.cc
SRC_CC += capability_space.cc
SRC_CC += signal_transmitter.cc
SRC_CC += signal.cc
SRC_CC += platform.cc

14
repos/base-pistachio/src/lib/base/ipc.cc
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@ -185,10 +185,11 @@ void Genode::ipc_reply(Native_capability caller, Rpc_exception_code exc,
}
Genode::Rpc_request Genode::ipc_reply_wait(Reply_capability const &last_caller,
Rpc_exception_code exc,
Msgbuf_base &reply_msg,
Msgbuf_base &request_msg)
Genode::Rpc_request Genode::ipc_reply_wait(Reply_capability const &last_caller,
Rpc_exception_code exc,
Msgbuf_base &reply_msg,
Msgbuf_base &request_msg,
Rpc_entrypoint::Native_context &)
{
bool need_to_wait = true;
@ -237,9 +238,10 @@ Genode::Rpc_request Genode::ipc_reply_wait(Reply_capability const &last_caller,
}
Ipc_server::Ipc_server()
Ipc_server::Ipc_server(Rpc_entrypoint::Native_context& _native_context)
:
Native_capability(Capability_space::import(Pistachio::L4_Myself(), Rpc_obj_key()))
Native_capability(Capability_space::import(Pistachio::L4_Myself(), Rpc_obj_key())),
_native_context(_native_context)
{ }

3
repos/base-sel4/lib/mk/base-sel4-common.inc
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@ -9,6 +9,9 @@ include $(BASE_DIR)/lib/mk/base-common.inc
LIBS += startup-sel4 syscall-sel4
SRC_CC += rpc_dispatch_loop.cc
SRC_CC += rpc_entrypoint_manage.cc
SRC_CC += thread.cc thread_myself.cc thread_bootstrap.cc
SRC_CC += capability.cc capability_raw.cc
SRC_CC += stack_area_addr.cc
SRC_CC += platform.cc
SRC_CC += rpc_entry.cc

14
repos/base-sel4/src/lib/base/ipc.cc
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@ -359,10 +359,11 @@ void Genode::ipc_reply(Native_capability, Rpc_exception_code exc,
}
Genode::Rpc_request Genode::ipc_reply_wait(Reply_capability const &,
Rpc_exception_code exc,
Msgbuf_base &reply_msg,
Msgbuf_base &request_msg)
Genode::Rpc_request Genode::ipc_reply_wait(Reply_capability const &,
Rpc_exception_code exc,
Msgbuf_base &reply_msg,
Msgbuf_base &request_msg,
Rpc_entrypoint::Native_context &)
{
/* allocate and define receive selector */
if (!rcv_sel())
@ -391,9 +392,10 @@ Genode::Rpc_request Genode::ipc_reply_wait(Reply_capability const &,
}
Ipc_server::Ipc_server()
Ipc_server::Ipc_server(Rpc_entrypoint::Native_context& _native_context)
:
Native_capability(Capability_space::create_ep_cap(*Thread::myself()))
Native_capability(Capability_space::create_ep_cap(*Thread::myself())),
_native_context(_native_context)
{ }

20
repos/base/include/base/platform.h Normal file
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@ -0,0 +1,20 @@
/*
* \brief Platform dependant hook after binary ready
* \author Stefan Thoeni
* \date 2019-12-13
*/
/*
* Copyright (C) 2019 Genode Labs GmbH
* Copyright (C) 2019 gapfruit AG
*
* This file is part of the Genode OS framework, which is distributed
* under the terms of the GNU Affero General Public License version 3.
*/
#ifndef _INCLUDE__PLATFORM_H_
#define _INCLUDE__PLATFORM_H_
void binary_ready_hook_for_platform();
#endif /* _INCLUDE__PLATFORM_H_ */

22
repos/base/include/base/rpc_server.h
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@ -1,11 +1,13 @@
/*
* \brief Server-side API of the RPC framework
* \author Norman Feske
* \author Stefan Thöni
* \date 2006-04-28
*/
/*
* Copyright (C) 2006-2017 Genode Labs GmbH
* Copyright (C) 2006-2020 Genode Labs GmbH
* Copyright (C) 2020 gapfruit AG
*
* This file is part of the Genode OS framework, which is distributed
* under the terms of the GNU Affero General Public License version 3.
@ -278,7 +280,6 @@ struct Genode::Rpc_object : Rpc_object_base, Rpc_dispatcher<RPC_INTERFACE, SERVE
}
};
/**
* RPC entrypoint serving RPC objects
*
@ -301,6 +302,10 @@ class Genode::Rpc_entrypoint : Thread, public Object_pool<Rpc_object_base>
*/
friend class Signal_receiver;
public:
class Native_context;
private:
/**
@ -320,6 +325,8 @@ class Genode::Rpc_entrypoint : Thread, public Object_pool<Rpc_object_base>
*/
static void _activation_entry();
static size_t _native_stack_size(size_t stack_size);
struct Exit : Genode::Interface
{
GENODE_RPC(Rpc_exit, void, _exit);
@ -344,6 +351,7 @@ class Genode::Rpc_entrypoint : Thread, public Object_pool<Rpc_object_base>
Pd_session &_pd_session; /* for creating capabilities */
Exit_handler _exit_handler { };
Capability<Exit> _exit_cap { };
Native_context *_native_context { nullptr };
/**
* Access to kernel-specific part of the PD session interface
@ -399,6 +407,12 @@ class Genode::Rpc_entrypoint : Thread, public Object_pool<Rpc_object_base>
*/
void entry() override;
/**
* Called by implementation specific entry function
* with created native context
*/
void _entry(Native_context& native_context);
public:
/**
@ -415,8 +429,12 @@ class Genode::Rpc_entrypoint : Thread, public Object_pool<Rpc_object_base>
char const *name, bool start_on_construction = true,
Affinity::Location location = Affinity::Location());
Rpc_entrypoint(Genode::Rpc_entrypoint const &) = delete;
~Rpc_entrypoint();
Genode::Rpc_entrypoint operator=(Genode::Rpc_entrypoint const &) = delete;
/**
* Associate RPC object with the entry point
*/

23
repos/base/src/include/base/internal/ipc_server.h
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@ -17,6 +17,7 @@
/* Genode includes */
#include <base/stdint.h>
#include <base/ipc.h>
#include <base/rpc_server.h>
namespace Genode {
@ -44,17 +45,25 @@ namespace Genode {
/**
* Send result of previous RPC request and wait for new one
*/
Rpc_request ipc_reply_wait(Reply_capability const &caller,
Rpc_exception_code reply_exc,
Msgbuf_base &reply_msg,
Msgbuf_base &request_msg);
Rpc_request ipc_reply_wait(Reply_capability const &caller,
Rpc_exception_code reply_exc,
Msgbuf_base &reply_msg,
Msgbuf_base &request_msg,
Rpc_entrypoint::Native_context &native_context);
}
struct Genode::Ipc_server : Native_capability
class Genode::Ipc_server : public Native_capability
{
Ipc_server();
~Ipc_server();
private:
Rpc_entrypoint::Native_context& _native_context;
public:
Ipc_server(Rpc_entrypoint::Native_context& native_context);
~Ipc_server();
};
#endif /* _INCLUDE__BASE__INTERNAL__IPC_SERVER_H_ */

22
repos/base/src/lib/base/platform.cc Normal file
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@ -0,0 +1,22 @@
/*
* \brief Platform dependant hook after binary ready
* \author Stefan Thoeni
* \date 2019-12-13
*/
/*
* Copyright (C) 2019 Genode Labs GmbH
* Copyright (C) 2019 gapfruit AG
*
* This file is part of the Genode OS framework, which is distributed
* under the terms of the GNU Affero General Public License version 3.
*/
/* base-internal includes */
#include <base/platform.h>
void binary_ready_hook_for_platform()
{
}

30
repos/base/src/lib/base/rpc_dispatch_loop.cc
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@ -20,33 +20,11 @@
using namespace Genode;
/***********************
** Server entrypoint **
***********************/
Untyped_capability Rpc_entrypoint::_manage(Rpc_object_base *obj)
void Rpc_entrypoint::_entry(Native_context& native_context)
{
/* don't manage RPC object twice */
if (obj->cap().valid()) {
warning("attempt to manage RPC object twice");
return obj->cap();
}
_native_context = &native_context;
Untyped_capability new_obj_cap = _alloc_rpc_cap(_pd_session, _cap);
/* add server object to object pool */
obj->cap(new_obj_cap);
insert(obj);
/* return capability that uses the object id as badge */
return new_obj_cap;
}
void Rpc_entrypoint::entry()
{
Ipc_server srv;
Ipc_server srv(native_context);
_cap = srv;
_cap_valid.unlock();
@ -63,7 +41,7 @@ void Rpc_entrypoint::entry()
while (!_exit_handler.exit) {
Rpc_request const request = ipc_reply_wait(_caller, exc, _snd_buf, _rcv_buf);
Rpc_request const request = ipc_reply_wait(_caller, exc, _snd_buf, _rcv_buf, native_context);
_caller = request.caller;
Ipc_unmarshaller unmarshaller(_rcv_buf);

40
repos/base/src/lib/base/rpc_entry.cc Normal file
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@ -0,0 +1,40 @@
/*
* \brief Default version of platform-specific part of RPC framework
* \author Stefan Thöni
* \date 2020-01-30
*/
/*
* Copyright (C) 2006-2020 Genode Labs GmbH
* Copyright (C) 2020 gapfruit AG
*
* This file is part of the Genode OS framework, which is distributed
* under the terms of the GNU Affero General Public License version 3.
*/
/* Genode includes */
#include <base/rpc_server.h>
/* base-internal includes */
#include <base/internal/ipc_server.h>
using namespace Genode;
class Rpc_entrypoint::Native_context
{
};
void Rpc_entrypoint::entry()
{
Native_context context { };
_entry(context);
}
size_t Rpc_entrypoint::_native_stack_size(size_t stack_size)
{
return stack_size + sizeof(Native_context);
}

2
repos/base/src/lib/base/rpc_entrypoint.cc
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@ -73,7 +73,7 @@ Rpc_entrypoint::Rpc_entrypoint(Pd_session *pd_session, size_t stack_size,
char const *name, bool start_on_construction,
Affinity::Location location)
:
Thread(Cpu_session::Weight::DEFAULT_WEIGHT, name, stack_size, location),
Thread(Cpu_session::Weight::DEFAULT_WEIGHT, name, _native_stack_size(stack_size), location),
_cap(Untyped_capability()),
_cap_valid(Lock::LOCKED), _delay_start(Lock::LOCKED),
_delay_exit(Lock::LOCKED),

45
repos/base/src/lib/base/rpc_entrypoint_manage.cc Normal file
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@ -0,0 +1,45 @@
/*
* \brief Default version of platform-specific part of RPC framework
* \author Norman Feske
* \date 2006-05-12
*/
/*
* Copyright (C) 2006-2017 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.
*/
/* Genode includes */
#include <util/retry.h>
#include <base/rpc_server.h>
/* base-internal includes */
#include <base/internal/ipc_server.h>
using namespace Genode;
/***********************
** Server entrypoint **
***********************/
Untyped_capability Rpc_entrypoint::_manage(Rpc_object_base *obj)
{
/* don't manage RPC object twice */
if (obj->cap().valid()) {
warning("attempt to manage RPC object twice");
return obj->cap();
}
Untyped_capability new_obj_cap = _alloc_rpc_cap(_pd_session, _cap);
/* add server object to object pool */
obj->cap(new_obj_cap);
insert(obj);
/* return capability that uses the object id as badge */
return new_obj_cap;
}

3
repos/base/src/lib/ldso/main.cc
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@ -19,6 +19,7 @@
#include <util/string.h>
#include <base/thread.h>
#include <base/heap.h>
#include <base/platform.h>
/* base-internal includes */
#include <base/internal/unmanaged_singleton.h>
@ -783,6 +784,8 @@ void Component::construct(Genode::Env &env)
binary_ready_hook_for_gdb();
binary_ready_hook_for_platform();
/* start binary */
binary_ptr->call_entry_point(env);
}