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# Utilities and shortcuts for recipes providing D-Bus services.
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# Variables:
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# DBUS_PACKAGES ?= "${PN}"
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# The list of packages to which files should be added.
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#
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# DBUS_SERVICE:${PN} += "org.openbmc.Foo.service"
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# A list of dbus service names. The class will look for a
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# dbus configuration file with the same base name with .conf
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# appended. If one is found, it is added to the package
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# and used verbatim. If it is not found, a default one
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# (with very open permissions) is generated and used.
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#
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# Additionally the class will instantiate obmc-phosphor-systemd
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# with any SYSTEMD_SERVICE:%s variables translated appropriately.
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#
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# If a service begins with 'dbus-' DBus activation will be
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# configured. The class will look for an activation file
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# with the 'dbus-' prefix removed. If found, it is added to
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# the package and used verbatim. If it is not found, a default
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# one is generated and used.
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inherit dbus-dir
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inherit obmc-phosphor-utils
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RDEPENDS:${PN}:append:class-target = " dbus-perms"
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DBUS_PACKAGES ?= "${PN}"
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_INSTALL_DBUS_CONFIGS=""
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_DEFAULT_DBUS_CONFIGS=""
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_INSTALL_DBUS_ACTIVATIONS=""
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_DEFAULT_DBUS_ACTIVATIONS=""
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python dbus_do_postinst() {
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def make_default_dbus_config(d, unit, user):
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bus = unit.base
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if unit.is_template:
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bus = '%s*' % bus
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path = d.getVar('D', True)
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path += d.getVar('dbus_system_confdir', True)
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with open('%s/%s.conf' % (path, unit.base), 'w+') as fd:
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fd.write('<!DOCTYPE busconfig PUBLIC "-//freedesktop//DTD D-BUS Bus Configuration 1.0//EN"\n')
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fd.write(' "http://www.freedesktop.org/standards/dbus/1.0/busconfig.dtd">\n')
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fd.write('<busconfig>\n')
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fd.write(' <policy user="%s">\n' % user)
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fd.write(' <allow own="%s"/>\n' % bus)
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fd.write(' <allow send_destination="%s"/>\n' % bus)
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fd.write(' </policy>\n')
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fd.write('</busconfig>\n')
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fd.close()
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def make_default_dbus_activation(d, unit, user):
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dest = unit.base
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sd_unit = unit.name
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if unit.is_instance:
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dest = '%s.%s' % (unit.base, unit.instance)
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sd_unit = '%s@%s' % (unit.base, unit.instance)
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path = d.getVar('D', True)
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path += d.getVar('dbus_system_servicesdir', True)
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with open('%s/%s.service' % (path, dest), 'w+') as fd:
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fd.write('[D-BUS Service]\n')
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fd.write('Name=%s\n' % dest)
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fd.write('Exec=/bin/false\n')
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fd.write('User=%s\n' % user)
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fd.write('SystemdService=dbus-%s.service\n' % sd_unit)
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fd.close()
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for service_user in listvar_to_list(d, '_DEFAULT_DBUS_CONFIGS'):
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service, user = service_user.split(':')
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make_default_dbus_config(d, SystemdUnit(service), user)
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for service_user in listvar_to_list(d, '_DEFAULT_DBUS_ACTIVATIONS'):
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service, user = service_user.split(':')
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make_default_dbus_activation(d, SystemdUnit(service), user)
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}
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python() {
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searchpaths = d.getVar('FILESPATH', True)
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def get_user(d, service, pkg):
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user = d.getVar(
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'SYSTEMD_USER_%s' % service, True)
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if user is None:
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user = d.getVar(
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'SYSTEMD_USER_%s' % pkg, True) or 'root'
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return user
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def add_dbus_config(d, unit, pkg):
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path = bb.utils.which(searchpaths, '%s.conf' % unit.base)
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if not os.path.isfile(path):
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user = get_user(d, unit.name, pkg)
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set_doappend(d, '_DEFAULT_DBUS_CONFIGS', '%s:%s' % (
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unit.name, user))
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else:
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set_doappend(d, 'SRC_URI', 'file://%s.conf' % unit.base)
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set_doappend(d, '_INSTALL_DBUS_CONFIGS', '%s.conf' % unit.base)
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set_doappend(d, 'FILES:%s' % pkg, '%s%s.conf' \
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% (d.getVar('dbus_system_confdir', True), unit.base))
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def add_dbus_activation(d, unit, pkg):
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if not unit.is_activated or unit.is_template:
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return
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search_match = '%s.service' % unit.base
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if unit.is_instance:
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search_match = '%s.%s.service' % (unit.base, unit.instance)
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path = bb.utils.which(searchpaths, search_match)
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if not os.path.isfile(path):
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user = get_user(d, unit.base, pkg)
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set_doappend(d, '_DEFAULT_DBUS_ACTIVATIONS', '%s:%s' % (
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unit.name, user))
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else:
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set_doappend(d, 'SRC_URI', 'file://%s' % search_match)
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set_doappend(d, '_INSTALL_DBUS_ACTIVATIONS', search_match)
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set_doappend(d, 'FILES:%s' % pkg, '%s%s' \
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% (d.getVar('dbus_system_servicesdir', True), search_match))
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if d.getVar('CLASSOVERRIDE', True) != 'class-target':
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return
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d.appendVarFlag('do_install', 'postfuncs', ' dbus_do_postinst')
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for pkg in listvar_to_list(d, 'DBUS_PACKAGES'):
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if pkg not in (d.getVar('SYSTEMD_PACKAGES', True) or ''):
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set_doappend(d, 'SYSTEMD_PACKAGES', pkg)
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svc = listvar_to_list(d, 'DBUS_SERVICE:%s' % pkg)
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svc = [SystemdUnit(x) for x in svc]
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inst = [x for x in svc if x.is_instance]
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tmpl = [x.template for x in svc if x.is_instance]
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tmpl = list(set(tmpl))
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tmpl = [SystemdUnit(x) for x in tmpl]
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svc = [x for x in svc if not x.is_instance]
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for unit in inst:
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set_doappend(
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d, 'SYSTEMD_SERVICE:%s' % pkg, unit.name)
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for unit in tmpl + svc:
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add_dbus_config(d, unit, pkg)
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add_dbus_activation(d, unit, pkg)
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set_doappend(
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d, 'SYSTEMD_SERVICE:%s' % pkg, unit.name)
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set_doappend(d, 'SYSTEMD_SUBSTITUTIONS',
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'BUSNAME:%s:%s' % (unit.base, unit.name))
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}
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do_install:append() {
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# install the dbus configuration files
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[ -z "${_INSTALL_DBUS_CONFIGS}" ] && \
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[ -z "${_DEFAULT_DBUS_CONFIGS}" ] || \
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install -d ${D}${dbus_system_confdir}
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for c in ${_INSTALL_DBUS_CONFIGS}; do
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install -m 0644 ${WORKDIR}/$c \
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${D}${dbus_system_confdir}$c
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done
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# install the dbus activation files
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[ -z "${_INSTALL_DBUS_ACTIVATIONS}" ] && \
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[ -z "${_DEFAULT_DBUS_ACTIVATIONS}" ] || \
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install -d ${D}${dbus_system_servicesdir}
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for s in ${_INSTALL_DBUS_ACTIVATIONS}; do
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install -m 0644 ${WORKDIR}/$s\
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${D}${dbus_system_servicesdir}$s
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done
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}
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inherit obmc-phosphor-systemd
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