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/*
* Copyright © Canonical Ltd.
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 or 3,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <mir/test/doubles/stub_console_services.h>
#include <mir/fd.h>
#include <boost/throw_exception.hpp>
#include <sys/sysmacros.h>
#include <fcntl.h>
#include <xf86drm.h>
namespace mtd = mir::test::doubles;
void mtd::StubConsoleServices::register_switch_handlers(
mir::graphics::EventHandlerRegister&,
std::function<bool()> const&,
std::function<bool()> const&)
{
}
void mtd::StubConsoleServices::restore()
{
}
namespace
{
bool is_drm_device(int major, int /*minor*/)
{
return major == 226;
}
}
std::future<std::unique_ptr<mir::Device>>
mtd::StubConsoleServices::acquire_device(
int major, int minor,
std::unique_ptr<mir::Device::Observer> observer)
{
/* NOTE: This uses the behaviour that MockDRM will intercept any open() call
* under /dev/dri/
*/
std::promise<std::unique_ptr<mir::Device>> promise;
auto devnode = devnode_for_devnum(major, minor);
mir::Fd device_fd{::open(devnode, O_RDWR | O_CLOEXEC)};
if (device_fd == mir::Fd::invalid)
{
promise.set_exception(
std::make_exception_ptr(
std::system_error{
errno,
std::system_category(),
"open() failed"}));
}
else if (!is_drm_device(major, minor) || drmSetMaster(device_fd) == 0)
{
observer->activated(std::move(device_fd));
// The Device is *just* a handle; there's no reason for anything to dereference it
promise.set_value(nullptr);
}
else
{
promise.set_exception(
std::make_exception_ptr(
std::system_error{
errno,
std::system_category(),
"drmSetMaster failed"}));
}
return promise.get_future();
}
char const* mtd::StubConsoleServices::devnode_for_devnum(int major, int minor)
{
auto const devnum = makedev(major, minor);
auto& devnode = devnodes[devnum];
if (devnode.empty())
{
if (is_drm_device(major, minor))
{
devnodes[devnum] = std::string{"/dev/dri/card"} + std::to_string(device_count);
++device_count;
}
else
{
devnodes[devnum] = "/dev/null";
}
devnode = devnodes[devnum];
}
return devnode.c_str();
}
std::unique_ptr<mir::VTSwitcher> mir::test::doubles::StubConsoleServices::create_vt_switcher()
{
BOOST_THROW_EXCEPTION((
std::runtime_error{"StubConsoleServices does not support VT switching"}));
}
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