return 1;
+ } else if (streq(name, "IgnoreSIGPIPE")) {
+ int b;
+
+ r = sd_bus_message_read(message, "b", &b);
+ if (r < 0)
+ return r;
+
+ if (mode != UNIT_CHECK) {
+ c->ignore_sigpipe = b;
+
+ unit_write_drop_in_private_format(u, mode, name, "IgnoreSIGPIPE=%s\n", yes_no(b));
+ }
+
+ return 1;
+
+ } else if (streq(name, "TTYVHangup")) {
+ int b;
+
+ r = sd_bus_message_read(message, "b", &b);
+ if (r < 0)
+ return r;
+
+ if (mode != UNIT_CHECK) {
+ c->tty_vhangup = b;
+
+ unit_write_drop_in_private_format(u, mode, name, "TTYVHangup=%s\n", yes_no(b));
+ }
+
+ return 1;
+
+
+ } else if (streq(name, "TTYReset")) {
+ int b;
+
+ r = sd_bus_message_read(message, "b", &b);
+ if (r < 0)
+ return r;
+
+ if (mode != UNIT_CHECK) {
+ c->tty_reset = b;
+
+ unit_write_drop_in_private_format(u, mode, name, "TTYReset=%s\n", yes_no(b));
+ }
+
+ return 1;
+
+ } else if (streq(name, "UtmpIdentifier")) {
+ const char *id;
+
+ r = sd_bus_message_read(message, "s", &id);
+ if (r < 0)
+ return r;
+
+ if (mode != UNIT_CHECK) {
+ if (isempty(id))
+ c->utmp_id = mfree(c->utmp_id);
+ else if (free_and_strdup(&c->utmp_id, id) < 0)
+ return -ENOMEM;
+
+ unit_write_drop_in_private_format(u, mode, name, "UtmpIdentifier=%s\n", strempty(id));
+ }
+
+ return 1;
+
+ } else if (streq(name, "UtmpMode")) {
+ const char *s;
+ ExecUtmpMode m;
+
+ r = sd_bus_message_read(message, "s", &s);
+ if (r < 0)
+ return r;
+
+ m = exec_utmp_mode_from_string(s);
+ if (m < 0)
+ return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid utmp mode");
+
+ if (mode != UNIT_CHECK) {
+ c->utmp_mode = m;
+
+ unit_write_drop_in_private_format(u, mode, name, "UtmpMode=%s\n", exec_utmp_mode_to_string(m));
+ }
+
+ return 1;
+
+ } else if (streq(name, "PAMName")) {
+ const char *n;
+
+ r = sd_bus_message_read(message, "s", &n);
+ if (r < 0)
+ return r;
+
+ if (mode != UNIT_CHECK) {
+ if (isempty(n))
+ c->pam_name = mfree(c->pam_name);
+ else if (free_and_strdup(&c->pam_name, n) < 0)
+ return -ENOMEM;
+
+ unit_write_drop_in_private_format(u, mode, name, "PAMName=%s\n", strempty(n));
+ }
+
+ return 1;
+
} else if (streq(name, "Environment")) {
_cleanup_strv_free_ char **l = NULL;