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# (c) 2007 Canonical Ltd.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License along
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# with this program; if not, write to the Free Software Foundation, Inc.,
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# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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'''Abstract handler for a restricted X.org graphics driver.'''
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import xorgconfig # from kde-guidance
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from handlers import ModulePackageHandler
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from oslib import OSLib
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#--------------------------------------------------------------------#
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class XorgDriverHandler(ModulePackageHandler):
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'''Abstract class for a restricted X.org graphics driver.'''
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def __init__(self, ui, module, driver_package, xorg_driver,
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alt_free_driver, extra_conf_options={}, add_modules=[],
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remove_modules=[], name=None, description=None, rationale=None):
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'''Create handler for a particular X.org graphics driver.
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This usually consists of a kernel module and a driver package, plus
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some xorg.conf configuration.
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- ui, module, driver_package, name, description, rationale: as in
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- xorg_driver: name of the X.org driver as it appears in xorg.conf
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- alt_free_driver: free fallback driver if this one gets disabled
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- extra_conf_options: dictionary of extra "Option"s that go into the
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Device section of xorg.conf
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- add_modules: list of modules that get added to the "Module" section
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of xorg.conf when enabling this driver (and removed when disabling)
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- remove_modules: list of modules that get removed from the "Module"
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section of xorg.conf when enabling this driver (and added when disabling)
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ModulePackageHandler.__init__(self, ui, module, driver_package, name,
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description, rationale)
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self.xorg_driver = xorg_driver
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self.alt_free_driver = alt_free_driver
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self.extra_conf_options = extra_conf_options
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self.add_modules = add_modules
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self.remove_modules = remove_modules
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self.xorg_conf = xorgconfig.readConfig(OSLib.inst.xorg_conf_path)
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except (IOError, xorgconfig.ParseException, AttributeError):
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# translators: %s is the path to xorg.conf
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return self.ui._('Reconfiguring X.org video drivers is not '
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'possible: %s is invalid or does not exist.') % \
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OSLib.inst.xorg_conf_path
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devices = self.xorg_conf.getSections('device')
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if len(devices) > 0 and devices[0].driver != self.xorg_driver:
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return ModulePackageHandler.enabled(self)
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def _mod_enabled(self, module):
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'''Check if current xorg configuration enables a module.'''
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module_sections = self.xorg_conf.getSections('module')
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if len(module_sections) < 1:
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for m in module_sections[0]._contents:
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if len(m._row) >= 2 and m._row[1] == module:
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ModulePackageHandler.enable(self)
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# do not mangle xorg.conf if package installation has been aborted
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if not OSLib.inst.package_installed(self.package):
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# backup the current xorg.conf
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open(os.path.join(OSLib.inst.backup_dir, self.xorg_driver + '.oldconf'), 'w').write(
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open(OSLib.inst.xorg_conf_path).read())
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device = self.xorg_conf.getSections('device')[0]
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device.driver = self.xorg_driver
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have_modules = len(self.xorg_conf.getSections('module')) > 0
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for m in self.remove_modules:
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self.xorg_conf.getSections('module')[0].removeModule(m)
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self.xorg_conf.append(self.xorg_conf.makeSection(None, ['Section',
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for m in self.add_modules:
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if not self._mod_enabled(m):
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self.xorg_conf.getSections('module')[0].addModule(m)
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for k, v in self.extra_conf_options.iteritems():
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device.option.removeOptionByName(k)
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device.option.appendOptionRow([k, v])
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self.enable_config_hook()
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self.xorg_conf.writeConfig(OSLib.inst.xorg_conf_path)
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OSLib.inst.ui_notify_reboot(self.ui)
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ModulePackageHandler.disable(self)
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# do not mangle xorg.conf if package uninstallation has been aborted
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if OSLib.inst.package_installed(self.package):
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# if we have the previous xorg.conf, restore that
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oldconf = os.path.join(OSLib.inst.backup_dir, self.xorg_driver + '.oldconf')
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if os.path.exists(oldconf):
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open(OSLib.inst.xorg_conf_path, 'w').write(open(oldconf).read())
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self.xorg_conf = xorgconfig.readConfig(OSLib.inst.xorg_conf_path)
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else: # no backup, so mangle current config manually
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# try to get the previous driver
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# p = os.path.join(MANAGER_ROOT, self.name + '.olddriver')
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# free_driver = open(p).read().strip()
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# free_driver = self.free_driver
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free_driver = self.alt_free_driver
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device = self.xorg_conf.getSections('device')[0]
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device.driver = free_driver
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have_modules = len(self.xorg_conf.getSections('module')) > 0
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for m in self.add_modules:
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self.xorg_conf.getSections('module')[0].removeModule(m)
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if self.remove_modules:
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self.xorg_conf.append(self.xorg_conf.makeSection(None, ['Section',
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for m in self.remove_modules:
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if not self._mod_enabled(m):
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self.xorg_conf.getSections('module')[0].addModule(m)
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for k in self.extra_conf_options:
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device.option.removeOptionByName(k)
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self.disable_config_hook()
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self.xorg_conf.writeConfig(OSLib.inst.xorg_conf_path)
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OSLib.inst.ui_notify_reboot(self.ui)
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def enable_config_hook(self):
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'''Custom self.xorg_config changes after driver, modules, and extra
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driver options have been changed.
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def disable_config_hook(self):
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'''Custom self.xorg_config changes after driver, modules, and extra
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driver options have been changed.
added
removed
jockey/xorg_driver.py
