genode/repos/base-linux/include/pd_session/connection.h
Norman Feske ca971bbfd8 Move repositories to 'repos/' subdirectory
This patch changes the top-level directory layout as a preparatory
step for improving the tools for managing 3rd-party source codes.
The rationale is described in the issue referenced below.

Issue #1082
2014-05-14 16:08:00 +02:00

101 lines
2.4 KiB
C++

/*
* \brief Connection to PD service
* \author Norman Feske
* \date 2012-11-21
*
* In contrast to the generic version of 'pd_session/connection.h', the
* Linux-specific version supplies additional argument to core's PD service:
*
* :'root': is the path of a chroot environment of the process
* :'uid': is the user ID of the process
* :'gid': is the designated group ID of the process
*/
/*
* Copyright (C) 2012-2013 Genode Labs GmbH
*
* This file is part of the Genode OS framework, which is distributed
* under the terms of the GNU General Public License version 2.
*/
#ifndef _INCLUDE__PD_SESSION__CONNECTION_H_
#define _INCLUDE__PD_SESSION__CONNECTION_H_
#include <pd_session/client.h>
#include <base/connection.h>
namespace Genode {
class Pd_connection : public Connection<Pd_session>, public Pd_session_client
{
private:
template <Genode::size_t STRING_MAX_LEN>
struct Arg
{
char string[STRING_MAX_LEN];
Arg() { string[0] = 0; }
};
/**
* Convert root path argument to session-construction parameter
*/
struct Root_arg : Arg<Native_pd_args::ROOT_PATH_MAX_LEN>
{
Root_arg(Native_pd_args const *args)
{
if (args && args->root() && args->root()[0])
Genode::snprintf(string, sizeof(string), ", root=\"%s\"",
args->root());
}
};
/**
* Convert UID argument to session-construction parameter
*/
struct Uid_arg : Arg<64>
{
Uid_arg(Native_pd_args const *args)
{
if (args && args->uid())
Genode::snprintf(string, sizeof(string), ", uid=%u",
args->uid());
}
};
/**
* Convert GID argument to session-construction parameter
*/
struct Gid_arg : Arg<64>
{
Gid_arg(Native_pd_args const *args)
{
if (args && args->gid())
Genode::snprintf(string, sizeof(string), ", gid=%u",
args->gid());
}
};
public:
/**
* Constructor
*
* \param label session label
* \param pd_args Linux-specific PD-session arguments
*/
Pd_connection(char const *label = "", Native_pd_args const *pd_args = 0)
:
Connection<Pd_session>(
session("ram_quota=4K, label=\"%s\"%s%s%s", label,
Root_arg(pd_args).string,
Uid_arg(pd_args).string,
Gid_arg(pd_args).string)),
Pd_session_client(cap())
{ }
};
}
#endif /* _INCLUDE__PD_SESSION__CONNECTION_H_ */