GList *
systemd_unit_listall(void)
{
int lpc = 0;
GList *units = NULL;
DBusMessageIter args;
DBusMessageIter unit;
DBusMessageIter elem;
DBusMessage *reply = NULL;
if (systemd_init() == FALSE) {
return NULL;
}
/*
" <method name=\"ListUnits\">\n" \
" <arg name=\"units\" type=\"a(ssssssouso)\" direction=\"out\"/>\n" \
" </method>\n" \
*/
reply = systemd_call_simple_method("ListUnits");
if (reply == NULL) {
return NULL;
}
if (!dbus_message_iter_init(reply, &args)) {
crm_err("Could not list systemd units: systemd reply has no arguments");
dbus_message_unref(reply);
return NULL;
}
if (!pcmk_dbus_type_check(reply, &args, DBUS_TYPE_ARRAY,
__FUNCTION__, __LINE__)) {
crm_err("Could not list systemd units: systemd reply has invalid arguments");
dbus_message_unref(reply);
return NULL;
}
dbus_message_iter_recurse(&args, &unit);
while (dbus_message_iter_get_arg_type (&unit) != DBUS_TYPE_INVALID) {
DBusBasicValue value;
if(!pcmk_dbus_type_check(reply, &unit, DBUS_TYPE_STRUCT, __FUNCTION__, __LINE__)) {
continue;
}
dbus_message_iter_recurse(&unit, &elem);
if(!pcmk_dbus_type_check(reply, &elem, DBUS_TYPE_STRING, __FUNCTION__, __LINE__)) {
continue;
}
dbus_message_iter_get_basic(&elem, &value);
crm_trace("DBus ListUnits listed: %s", value.str);
if(value.str) {
const char *match = systemd_unit_extension(value.str);
if (match) {
char *unit_name;
if (!strcmp(match, ".service")) {
/* service is the "default" unit type, so strip it */
unit_name = strndup(value.str, match - value.str);
} else {
unit_name = strdup(value.str);
}
lpc++;
units = g_list_append(units, unit_name);
}
}
dbus_message_iter_next (&unit);
}
dbus_message_unref(reply);
crm_trace("Found %d systemd services", lpc);
return units;
}
GList *
systemd_unit_listall(void)
{
int nfiles = 0;
GList *units = NULL;
DBusMessageIter args;
DBusMessageIter unit;
DBusMessageIter elem;
DBusMessage *reply = NULL;
if (systemd_init() == FALSE) {
return NULL;
}
/*
" <method name=\"ListUnitFiles\">\n" \
" <arg name=\"files\" type=\"a(ss)\" direction=\"out\"/>\n" \
" </method>\n" \
*/
reply = systemd_call_simple_method("ListUnitFiles");
if (reply == NULL) {
return NULL;
}
if (!dbus_message_iter_init(reply, &args)) {
crm_err("Could not list systemd unit files: systemd reply has no arguments");
dbus_message_unref(reply);
return NULL;
}
if (!pcmk_dbus_type_check(reply, &args, DBUS_TYPE_ARRAY,
__FUNCTION__, __LINE__)) {
crm_err("Could not list systemd unit files: systemd reply has invalid arguments");
dbus_message_unref(reply);
return NULL;
}
dbus_message_iter_recurse(&args, &unit);
for (; dbus_message_iter_get_arg_type(&unit) != DBUS_TYPE_INVALID;
dbus_message_iter_next(&unit)) {
DBusBasicValue value;
const char *match = NULL;
char *unit_name = NULL;
char *basename = NULL;
if(!pcmk_dbus_type_check(reply, &unit, DBUS_TYPE_STRUCT, __FUNCTION__, __LINE__)) {
crm_debug("ListUnitFiles reply has unexpected type");
continue;
}
dbus_message_iter_recurse(&unit, &elem);
if(!pcmk_dbus_type_check(reply, &elem, DBUS_TYPE_STRING, __FUNCTION__, __LINE__)) {
crm_debug("ListUnitFiles reply does not contain a string");
continue;
}
dbus_message_iter_get_basic(&elem, &value);
if (value.str == NULL) {
crm_debug("ListUnitFiles reply did not provide a string");
continue;
}
crm_trace("DBus ListUnitFiles listed: %s", value.str);
match = systemd_unit_extension(value.str);
if (match == NULL) {
// Unit files always have an extension, so skip if not present
crm_debug("ListUnitFiles entry '%s' does not have an extension",
value.str);
continue;
}
// ListUnitFiles returns full path names
basename = strrchr(value.str, '/');
if (basename) {
basename = basename + 1;
} else {
basename = value.str;
}
/* Unit files will include types (such as .target) that we can't manage,
* so filter the replies here.
*/
if (!strcmp(match, ".service")) {
// Service is the "default" unit type, so strip it
unit_name = strndup(basename, match - basename);
} else if (!strcmp(match, ".mount")
|| !strcmp(match, ".socket")) {
unit_name = strdup(basename);
}
if (unit_name == NULL) {
crm_trace("ListUnitFiles entry '%s' is not manageable",
value.str);
continue;
}
nfiles++;
units = g_list_prepend(units, unit_name);
}
dbus_message_unref(reply);
crm_trace("Found %d manageable systemd unit files", nfiles);
units = g_list_sort(units, crm_alpha_sort);
return units;
}