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# Common code for systemd based services.
#
# Prior to inheriting this class, recipes can define services like this:
#
# SYSTEMD_SERVICE_${PN} = "foo.service bar.socket baz@.service"
#
# and these files will be added to the main package if they exist.
#
# Alternatively this class can just be inherited and
# ${PN}.service will be added to the main package.
#
# Other variables:
# INHIBIT_SYSTEMD_RESTART_POLICY_${unit}
# Inhibit the warning that is displayed if a service unit without a
# restart policy is detected.
#
# SYSTEMD_SUBSTITUTIONS_${unit}
# Variables in this list will be substituted in the specified unit
# file during install (if bitbake finds python {format} strings
# in the unit file itself). List entries take the form:
# VAR:VALUE
# where {VAR} is the format string bitbake should look for in the
# unit file and VALUE is the value to substitute.
#
# SYSTEMD_USER_${PN}_${PN}.service = "foo"
# The user for the unit.
inherit obmc-phosphor-utils
inherit systemd
inherit useradd
_INSTALL_SD_UNITS=""
SYSTEMD_DEFAULT_TARGET ?= "obmc-standby.target"
# Big ugly hack to prevent useradd.bbclass post-parse sanity checker failure.
# If there are users to be added, we'll add them in our post-parse.
# If not...there don't seem to be any ill effects...
USERADD_PACKAGES ?= " "
USERADD_PARAM_${PN} ?= ";"
def systemd_is_service(unit):
return unit.endswith('.service')
def systemd_is_template(unit):
return '@.' in unit
def systemd_parse_unit(d, path):
import ConfigParser
parser = ConfigParser.SafeConfigParser()
parser.optionxform = str
parser.read('%s' % path)
return parser
python() {
def check_sd_unit(d, unit):
searchpaths = d.getVar('FILESPATH', True)
path = bb.utils.which(searchpaths, '%s' % unit)
if not os.path.isfile(path):
bb.fatal('Did not find unit file "%s"' % unit)
parser = systemd_parse_unit(d, path)
inhibit = listvar_to_list(d, 'INHIBIT_SYSTEMD_RESTART_POLICY_WARNING')
if systemd_is_service(unit) and \
not systemd_is_template(unit) and \
unit not in inhibit and \
not parser.has_option('Service', 'Restart'):
bb.warn('Systemd unit \'%s\' does not '
'have a restart policy defined.' % unit)
def add_sd_unit(d, unit, pkg):
set_append(d, 'SRC_URI', 'file://%s' % unit)
set_append(d, 'FILES_%s' % pkg, '%s/%s' \
% (d.getVar('systemd_system_unitdir', True), unit))
set_append(d, '_INSTALL_SD_UNITS', unit)
for x in [
'base_bindir',
'bindir',
'sbindir',
'SYSTEMD_DEFAULT_TARGET' ]:
set_append(d, 'SYSTEMD_SUBSTITUTIONS_%s' % unit,
'%s:%s' % (x, d.getVar(x, True)))
user = d.getVar(
'SYSTEMD_USER_%s_%s' % (pkg, unit), True)
if user:
set_append(d, 'SYSTEMD_SUBSTITUTIONS_%s' % unit,
'USER:%s' % d.getVar('SYSTEMD_USER_%s_%s' % (pkg, unit), True))
def add_sd_user(d, unit, pkg):
opts = [
'--system',
'--home',
'/',
'--no-create-home',
'--shell /sbin/nologin',
'--user-group']
user = d.getVar(
'SYSTEMD_USER_%s_%s' % (pkg, unit), True)
if user:
set_append(
d,
'USERADD_PARAM_%s' % pkg,
'%s' % (' '.join(opts + [user])),
';')
if pkg not in d.getVar('USERADD_PACKAGES', True):
set_append(d, 'USERADD_PACKAGES', pkg)
pn = d.getVar('PN', True)
if d.getVar('SYSTEMD_SERVICE_%s' % pn, True) is None:
d.setVar('SYSTEMD_SERVICE_%s' % pn, '%s.service' % pn)
for pkg in listvar_to_list(d, 'SYSTEMD_PACKAGES'):
for unit in listvar_to_list(d, 'SYSTEMD_SERVICE_%s' % pkg):
check_sd_unit(d, unit)
add_sd_unit(d, unit, pkg)
add_sd_user(d, unit, pkg)
}
python systemd_do_postinst() {
for unit in listvar_to_list(d, '_INSTALL_SD_UNITS'):
subs = dict([ x.split(':') for x in
listvar_to_list(d, 'SYSTEMD_SUBSTITUTIONS_%s' % unit)])
if not subs:
continue
path = d.getVar('D', True)
path += d.getVar('systemd_system_unitdir', True)
path += '/%s' % unit
with open(path, 'r') as fd:
content = fd.read()
with open(path, 'w+') as fd:
try:
fd.write(content.format(**subs))
except KeyError as e:
bb.fatal('No substitution found for %s in '
'unit file \'%s\'' % (e, unit))
}
do_install_append() {
# install systemd service/socket/template files
[ -z "${_INSTALL_SD_UNITS}" ] || \
install -d ${D}${systemd_system_unitdir}
for s in ${_INSTALL_SD_UNITS}; do
install -m 0644 ${WORKDIR}/$s \
${D}${systemd_system_unitdir}/$s
sed -i -e 's,@BASE_BINDIR@,${base_bindir},g' \
-e 's,@BINDIR@,${bindir},g' \
-e 's,@SBINDIR@,${sbindir},g' \
${D}${systemd_system_unitdir}/$s
done
}
do_install[postfuncs] += "systemd_do_postinst"
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