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This patch integrates three region maps into each PD session to reduce the session overhead and to simplify the PD creation procedure. Please refer to the issue cited below for an elaborative discussion. Note the API change: With this patch, the semantics of core's RM service have changed. Now, the service is merely a tool for creating and destroying managed dataspaces, which are rarely needed. Regular components no longer need a RM session. For this reason, the corresponding argument for the 'Process' and 'Child' constructors has been removed. The former interface of the 'Rm_session' is not named 'Region_map'. As a minor refinement, the 'Fault_type' enum values are now part of the 'Region_map::State' struct. Issue #1938
181 lines
4.4 KiB
C++
181 lines
4.4 KiB
C++
/*
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* \brief Noux session interface
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* \author Norman Feske
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* \date 2011-02-15
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*/
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/*
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* Copyright (C) 2011-2013 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU General Public License version 2.
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*/
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#ifndef _INCLUDE__NOUX_SESSION__NOUX_SESSION_H_
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#define _INCLUDE__NOUX_SESSION__NOUX_SESSION_H_
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#include <base/stdint.h>
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#include <session/session.h>
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#include <dataspace/capability.h>
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#include <region_map/region_map.h>
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#define NOUX_DECL_SYSCALL_NAME(name) \
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case SYSCALL_##name: return #name;
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namespace Noux {
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using namespace Genode;
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struct Session : Genode::Session
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{
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static const char *service_name() { return "Noux"; }
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virtual ~Session() { }
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virtual Dataspace_capability sysio_dataspace() = 0;
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/**
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* Return leaf region map that covers a given address
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*
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* \param addr address that is covered by the requested region map
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*/
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virtual Capability<Region_map> lookup_region_map(addr_t const addr) = 0;
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enum Syscall {
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SYSCALL_WRITE,
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SYSCALL_READ,
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SYSCALL_STAT,
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SYSCALL_LSTAT,
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SYSCALL_FSTAT,
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SYSCALL_FTRUNCATE,
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SYSCALL_FCNTL,
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SYSCALL_OPEN,
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SYSCALL_CLOSE,
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SYSCALL_IOCTL,
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SYSCALL_LSEEK,
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SYSCALL_DIRENT,
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SYSCALL_EXECVE,
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SYSCALL_SELECT,
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SYSCALL_FORK,
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SYSCALL_GETPID,
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SYSCALL_WAIT4,
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SYSCALL_PIPE,
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SYSCALL_DUP2,
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SYSCALL_UNLINK,
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SYSCALL_READLINK,
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SYSCALL_RENAME,
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SYSCALL_MKDIR,
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SYSCALL_SYMLINK,
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SYSCALL_SOCKET,
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SYSCALL_GETSOCKOPT,
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SYSCALL_SETSOCKOPT,
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SYSCALL_ACCEPT,
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SYSCALL_BIND,
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SYSCALL_LISTEN,
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SYSCALL_SEND,
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SYSCALL_SENDTO,
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SYSCALL_RECV,
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SYSCALL_RECVFROM,
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SYSCALL_GETPEERNAME,
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SYSCALL_SHUTDOWN,
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SYSCALL_CONNECT,
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SYSCALL_USERINFO,
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SYSCALL_GETTIMEOFDAY,
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SYSCALL_CLOCK_GETTIME,
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SYSCALL_UTIMES,
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SYSCALL_SYNC,
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SYSCALL_KILL,
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SYSCALL_GETDTABLESIZE,
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SYSCALL_INVALID = -1
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};
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static char const *syscall_name(Syscall sc)
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{
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switch (sc) {
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NOUX_DECL_SYSCALL_NAME(WRITE)
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NOUX_DECL_SYSCALL_NAME(READ)
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NOUX_DECL_SYSCALL_NAME(STAT)
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NOUX_DECL_SYSCALL_NAME(LSTAT)
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NOUX_DECL_SYSCALL_NAME(FSTAT)
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NOUX_DECL_SYSCALL_NAME(FTRUNCATE)
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NOUX_DECL_SYSCALL_NAME(FCNTL)
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NOUX_DECL_SYSCALL_NAME(OPEN)
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NOUX_DECL_SYSCALL_NAME(CLOSE)
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NOUX_DECL_SYSCALL_NAME(IOCTL)
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NOUX_DECL_SYSCALL_NAME(LSEEK)
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NOUX_DECL_SYSCALL_NAME(DIRENT)
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NOUX_DECL_SYSCALL_NAME(EXECVE)
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NOUX_DECL_SYSCALL_NAME(SELECT)
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NOUX_DECL_SYSCALL_NAME(FORK)
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NOUX_DECL_SYSCALL_NAME(GETPID)
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NOUX_DECL_SYSCALL_NAME(WAIT4)
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NOUX_DECL_SYSCALL_NAME(PIPE)
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NOUX_DECL_SYSCALL_NAME(DUP2)
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NOUX_DECL_SYSCALL_NAME(UNLINK)
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NOUX_DECL_SYSCALL_NAME(READLINK)
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NOUX_DECL_SYSCALL_NAME(RENAME)
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NOUX_DECL_SYSCALL_NAME(MKDIR)
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NOUX_DECL_SYSCALL_NAME(SYMLINK)
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NOUX_DECL_SYSCALL_NAME(SOCKET)
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NOUX_DECL_SYSCALL_NAME(GETSOCKOPT)
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NOUX_DECL_SYSCALL_NAME(SETSOCKOPT)
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NOUX_DECL_SYSCALL_NAME(ACCEPT)
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NOUX_DECL_SYSCALL_NAME(BIND)
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NOUX_DECL_SYSCALL_NAME(LISTEN)
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NOUX_DECL_SYSCALL_NAME(SEND)
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NOUX_DECL_SYSCALL_NAME(SENDTO)
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NOUX_DECL_SYSCALL_NAME(RECV)
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NOUX_DECL_SYSCALL_NAME(RECVFROM)
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NOUX_DECL_SYSCALL_NAME(GETPEERNAME)
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NOUX_DECL_SYSCALL_NAME(SHUTDOWN)
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NOUX_DECL_SYSCALL_NAME(CONNECT)
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NOUX_DECL_SYSCALL_NAME(USERINFO)
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NOUX_DECL_SYSCALL_NAME(GETTIMEOFDAY)
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NOUX_DECL_SYSCALL_NAME(CLOCK_GETTIME)
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NOUX_DECL_SYSCALL_NAME(UTIMES)
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NOUX_DECL_SYSCALL_NAME(SYNC)
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NOUX_DECL_SYSCALL_NAME(KILL)
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NOUX_DECL_SYSCALL_NAME(GETDTABLESIZE)
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case SYSCALL_INVALID: return 0;
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}
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return 0;
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}
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/**
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* Perform syscall
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*
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* The syscall arguments and results are communicated via the shared
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* sysio dataspace.
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*
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* \return true on success
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*/
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virtual bool syscall(Syscall syscall) = 0;
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/*
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* Return the next open file descriptor, starting from (and including)
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* 'start_fd'.
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*
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* \return the next open file descriptor or -1
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*/
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virtual int next_open_fd(int start_fd) = 0;
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/*********************
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** RPC declaration **
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*********************/
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GENODE_RPC(Rpc_sysio_dataspace, Dataspace_capability, sysio_dataspace);
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GENODE_RPC(Rpc_lookup_region_map, Capability<Region_map>,
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lookup_region_map, addr_t);
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GENODE_RPC(Rpc_syscall, bool, syscall, Syscall);
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GENODE_RPC(Rpc_next_open_fd, int, next_open_fd, int);
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GENODE_RPC_INTERFACE(Rpc_sysio_dataspace, Rpc_lookup_region_map,
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Rpc_syscall, Rpc_next_open_fd);
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};
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}
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#undef NOUX_DECL_SYSCALL_NAME
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#endif /* _INCLUDE__NOUX_SESSION__NOUX_SESSION_H_ */
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