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uterm: vt: fix real VTs when opening the currently active VT

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We always assumed that the currently active VT is never the VT we open.
However, this is not true so schedule a VT-activation if this happens.

Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
This commit is contained in:
David Herrmann 2012-10-28 17:38:28 +01:00
parent 0eb8d17590
commit c827720f48
1 changed files with 47 additions and 4 deletions
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51
src/uterm_vt.c
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@ -69,6 +69,7 @@ struct uterm_vt {
int real_kbmode;
struct termios real_saved_attribs;
struct ev_fd *real_efd;
bool real_delayed;
};
struct uterm_vt_master {
@ -139,6 +140,16 @@ static void vt_call(struct uterm_vt *vt, unsigned int event)
* be used for backwards-compatibility.
*/
static void real_delayed(struct ev_eloop *eloop, void *unused, void *data)
{
struct uterm_vt *vt = data;
log_debug("enter VT %d %p during startup", vt->real_num, vt);
vt->real_delayed = false;
ev_eloop_unregister_idle_cb(eloop, real_delayed, vt);
vt_call(vt, UTERM_VT_ACTIVATE);
}
static void real_sig_enter(struct uterm_vt *vt, struct signalfd_siginfo *info)
{
struct vt_stat vts;
@ -156,11 +167,15 @@ static void real_sig_enter(struct uterm_vt *vt, struct signalfd_siginfo *info)
if (vts.v_active != vt->real_num)
return;
if (vt->active)
if (vt->real_delayed) {
vt->real_delayed = false;
ev_eloop_unregister_idle_cb(vt->vtm->eloop, real_delayed, vt);
} else if (vt->active) {
log_warning("activating VT %d even though it's already active",
vt->real_num);
else
} else {
uterm_input_wake_up(vt->input);
}
log_debug("enter VT %d %p due to VT signal", vt->real_num, vt);
ioctl(vt->real_fd, VT_RELDISP, VT_ACKACQ);
@ -187,11 +202,16 @@ static void real_sig_leave(struct uterm_vt *vt, struct signalfd_siginfo *info)
if (vts.v_active != vt->real_num)
return;
if (!vt->active)
if (vt->real_delayed) {
vt->real_delayed = false;
ev_eloop_unregister_idle_cb(vt->vtm->eloop, real_delayed, vt);
uterm_input_sleep(vt->input);
} else if (!vt->active) {
log_warning("deactivating VT %d even though it's not active",
vt->real_num);
else
} else {
uterm_input_sleep(vt->input);
}
log_debug("leaving VT %d %p due to VT signal", vt->real_num, vt);
vt_call(vt, UTERM_VT_DEACTIVATE);
@ -357,8 +377,24 @@ static int real_open(struct uterm_vt *vt, const char *vt_for_seat0)
goto err_setmode;
}
if (vts.v_active == vt->real_num) {
ret = ev_eloop_register_idle_cb(vt->vtm->eloop, real_delayed,
vt);
if (ret) {
log_error("cannot register idle cb for VT switch");
goto err_kbdmode;
}
vt->real_delayed = true;
uterm_input_wake_up(vt->input);
}
return 0;
err_kbdmode:
ret = ioctl(vt->real_fd, KDSKBMODE, vt->real_kbmode);
if (ret)
log_error("cannot reset VT KBMODE to %d (%d): %m",
vt->real_kbmode, errno);
err_setmode:
memset(&mode, 0, sizeof(mode));
mode.mode = VT_AUTO;
@ -391,6 +427,13 @@ static void real_close(struct uterm_vt *vt)
log_debug("closing VT %d", vt->real_num);
vt_call(vt, UTERM_VT_DEACTIVATE);
if (vt->real_delayed) {
vt->real_delayed = false;
ev_eloop_unregister_idle_cb(vt->vtm->eloop, real_delayed, vt);
uterm_input_sleep(vt->input);
}
ret = ioctl(vt->real_fd, KDSKBMODE, vt->real_kbmode);
if (ret)
log_error("cannot reset VT KBMODE to %d (%d): %m",