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logind: autospawn gettys when necessary

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This commit is contained in:
Lennart Poettering 2011-06-28 00:26:10 +02:00
parent 734b933ace
commit d0a522eb31
3 changed files with 63 additions and 15 deletions
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19
Makefile.am
View File

@ -1513,26 +1513,23 @@ endif
$(LN_S) graphical.target runlevel5.target && \
$(LN_S) reboot.target runlevel6.target )
( cd $(DESTDIR)$(systemunitdir) && \
rm -f default.target ctrl-alt-del.target dbus-org.freedesktop.hostname1.service dbus-org.freedesktop.locale1.service dbus-org.freedesktop.timedate1.service dbus-org.freedesktop.login1.service && \
rm -f default.target ctrl-alt-del.target dbus-org.freedesktop.hostname1.service dbus-org.freedesktop.locale1.service dbus-org.freedesktop.timedate1.service dbus-org.freedesktop.login1.service autovt-getty@.service && \
$(LN_S) graphical.target default.target && \
$(LN_S) reboot.target ctrl-alt-del.target && \
$(LN_S) systemd-hostnamed.service dbus-org.freedesktop.hostname1.service && \
$(LN_S) systemd-localed.service dbus-org.freedesktop.locale1.service && \
$(LN_S) systemd-timedated.service dbus-org.freedesktop.timedate1.service && \
$(LN_S) systemd-logind.service dbus-org.freedesktop.login1.service )
$(LN_S) systemd-logind.service dbus-org.freedesktop.login1.service && \
$(LN_S) getty@.service autovt-getty@.service )
( cd $(DESTDIR)$(systemunitdir)/multi-user.target.wants && \
rm -f getty.target systemd-user-sessions.service systemd-ask-password-wall.path && \
rm -f getty.target systemd-user-sessions.service systemd-ask-password-wall.path systemd-logind.service && \
$(LN_S) ../getty.target getty.target && \
$(LN_S) ../systemd-user-sessions.service systemd-user-sessions.service && \
$(LN_S) ../systemd-ask-password-wall.path systemd-ask-password-wall.path )
$(LN_S) ../systemd-ask-password-wall.path systemd-ask-password-wall.path && \
$(LN_S) ../systemd-logind.service systemd-logind.service )
( cd $(DESTDIR)$(pkgsysconfdir)/system/getty.target.wants && \
rm -f getty@tty1.service getty@tty2.service getty@tty3.service getty@tty4.service getty@tty5.service getty@tty6.service && \
$(LN_S) $(systemunitdir)/getty@.service getty@tty1.service && \
$(LN_S) $(systemunitdir)/getty@.service getty@tty2.service && \
$(LN_S) $(systemunitdir)/getty@.service getty@tty3.service && \
$(LN_S) $(systemunitdir)/getty@.service getty@tty4.service && \
$(LN_S) $(systemunitdir)/getty@.service getty@tty5.service && \
$(LN_S) $(systemunitdir)/getty@.service getty@tty6.service )
rm -f getty@tty1.service && \
$(LN_S) $(systemunitdir)/getty@.service getty@tty1.service )
( cd $(DESTDIR)$(pkgsysconfdir)/system/multi-user.target.wants && \
rm -f remote-fs.target && \
$(LN_S) $(systemunitdir)/remote-fs.target remote-fs.target )

57
src/logind.c
View File

@ -652,7 +652,13 @@ static int vt_is_busy(int vtnr) {
assert(vtnr >= 1);
fd = open_terminal("/dev/tty0", O_RDWR|O_NOCTTY|O_CLOEXEC);
/* We explicitly open /dev/tty1 here instead of /dev/tty0. If
* we'd open the latter we'd open the foreground tty which
* hence would be unconditionally busy. By opening /dev/tty1
* we avoid this. Since tty1 is special and needs to be an
* explicitly loaded getty or DM this is safe. */
fd = open_terminal("/dev/tty1", O_RDWR|O_NOCTTY|O_CLOEXEC);
if (fd < 0)
return -errno;
@ -668,16 +674,61 @@ static int vt_is_busy(int vtnr) {
int manager_spawn_autovt(Manager *m, int vtnr) {
int r;
DBusMessage *message = NULL, *reply = NULL;
char *name = NULL;
const char *mode = "fail";
DBusError error;
assert(m);
dbus_error_init(&error);
r = vt_is_busy(vtnr);
if (r != 0)
return r;
/* ... */
message = dbus_message_new_method_call("org.freedesktop.systemd1", "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "StartUnit");
if (!message) {
log_error("Could not allocate message.");
r = -ENOMEM;
goto finish;
}
return 0;
if (asprintf(&name, "autovt-getty@tty%i.service", vtnr) < 0) {
log_error("Could not allocate service name.");
r = -ENOMEM;
goto finish;
}
if (!dbus_message_append_args(message,
DBUS_TYPE_STRING, &name,
DBUS_TYPE_STRING, &mode,
DBUS_TYPE_INVALID)) {
log_error("Could not attach target and flag information to message.");
r = -ENOMEM;
goto finish;
}
reply = dbus_connection_send_with_reply_and_block(m->bus, message, -1, &error);
if (!reply) {
log_error("Failed to start unit: %s", bus_error_message(&error));
goto finish;
}
r = 0;
finish:
free(name);
if (message)
dbus_message_unref(message);
if (reply)
dbus_message_unref(reply);
dbus_error_free(&error);
return r;
}
void manager_cgroup_notify_empty(Manager *m, const char *cgroup) {

2
units/getty@.service.m4
View File

@ -51,4 +51,4 @@ Environment=LANG= LC_CTYPE= LC_NUMERIC= LC_TIME= LC_COLLATE= LC_MONETARY= LC_MES
KillSignal=SIGHUP
[Install]
Alias=getty.target.wants/getty@tty1.service getty.target.wants/getty@tty2.service getty.target.wants/getty@tty3.service getty.target.wants/getty@tty4.service getty.target.wants/getty@tty5.service getty.target.wants/getty@tty6.service
Alias=getty.target.wants/getty@tty1.service