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-rw-r--r--drivers/char/vt_ioctl.c39
-rw-r--r--include/linux/vt.h3
2 files changed, 20 insertions, 22 deletions
diff --git a/drivers/char/vt_ioctl.c b/drivers/char/vt_ioctl.c
index 87778dcf8727..6aa10284104a 100644
--- a/drivers/char/vt_ioctl.c
+++ b/drivers/char/vt_ioctl.c
@@ -888,7 +888,7 @@ int vt_ioctl(struct tty_struct *tty, struct file * file,
888 ret = -EFAULT; 888 ret = -EFAULT;
889 goto out; 889 goto out;
890 } 890 }
891 if (tmp.mode != VT_AUTO && tmp.mode != VT_PROCESS && tmp.mode != VT_PROCESS_AUTO) { 891 if (tmp.mode != VT_AUTO && tmp.mode != VT_PROCESS) {
892 ret = -EINVAL; 892 ret = -EINVAL;
893 goto out; 893 goto out;
894 } 894 }
@@ -1622,7 +1622,7 @@ static void complete_change_console(struct vc_data *vc)
1622 * telling it that it has acquired. Also check if it has died and 1622 * telling it that it has acquired. Also check if it has died and
1623 * clean up (similar to logic employed in change_console()) 1623 * clean up (similar to logic employed in change_console())
1624 */ 1624 */
1625 if (vc->vt_mode.mode == VT_PROCESS || vc->vt_mode.mode == VT_PROCESS_AUTO) { 1625 if (vc->vt_mode.mode == VT_PROCESS) {
1626 /* 1626 /*
1627 * Send the signal as privileged - kill_pid() will 1627 * Send the signal as privileged - kill_pid() will
1628 * tell us if the process has gone or something else 1628 * tell us if the process has gone or something else
@@ -1682,7 +1682,7 @@ void change_console(struct vc_data *new_vc)
1682 * vt to auto control. 1682 * vt to auto control.
1683 */ 1683 */
1684 vc = vc_cons[fg_console].d; 1684 vc = vc_cons[fg_console].d;
1685 if (vc->vt_mode.mode == VT_PROCESS || vc->vt_mode.mode == VT_PROCESS_AUTO) { 1685 if (vc->vt_mode.mode == VT_PROCESS) {
1686 /* 1686 /*
1687 * Send the signal as privileged - kill_pid() will 1687 * Send the signal as privileged - kill_pid() will
1688 * tell us if the process has gone or something else 1688 * tell us if the process has gone or something else
@@ -1693,28 +1693,27 @@ void change_console(struct vc_data *new_vc)
1693 */ 1693 */
1694 vc->vt_newvt = new_vc->vc_num; 1694 vc->vt_newvt = new_vc->vc_num;
1695 if (kill_pid(vc->vt_pid, vc->vt_mode.relsig, 1) == 0) { 1695 if (kill_pid(vc->vt_pid, vc->vt_mode.relsig, 1) == 0) {
1696 if(vc->vt_mode.mode == VT_PROCESS)
1697 /*
1698 * It worked. Mark the vt to switch to and
1699 * return. The process needs to send us a
1700 * VT_RELDISP ioctl to complete the switch.
1701 */
1702 return;
1703 } else {
1704 /* 1696 /*
1705 * The controlling process has died, so we revert back to 1697 * It worked. Mark the vt to switch to and
1706 * normal operation. In this case, we'll also change back 1698 * return. The process needs to send us a
1707 * to KD_TEXT mode. I'm not sure if this is strictly correct 1699 * VT_RELDISP ioctl to complete the switch.
1708 * but it saves the agony when the X server dies and the screen
1709 * remains blanked due to KD_GRAPHICS! It would be nice to do
1710 * this outside of VT_PROCESS but there is no single process
1711 * to account for and tracking tty count may be undesirable.
1712 */ 1700 */
1713 reset_vc(vc); 1701 return;
1714 } 1702 }
1715 1703
1716 /* 1704 /*
1717 * Fall through to normal (VT_AUTO and VT_PROCESS_AUTO) handling of the switch... 1705 * The controlling process has died, so we revert back to
1706 * normal operation. In this case, we'll also change back
1707 * to KD_TEXT mode. I'm not sure if this is strictly correct
1708 * but it saves the agony when the X server dies and the screen
1709 * remains blanked due to KD_GRAPHICS! It would be nice to do
1710 * this outside of VT_PROCESS but there is no single process
1711 * to account for and tracking tty count may be undesirable.
1712 */
1713 reset_vc(vc);
1714
1715 /*
1716 * Fall through to normal (VT_AUTO) handling of the switch...
1718 */ 1717 */
1719 } 1718 }
1720 1719
diff --git a/include/linux/vt.h b/include/linux/vt.h
index 778b7b2a47d4..d5dd0bc408fd 100644
--- a/include/linux/vt.h
+++ b/include/linux/vt.h
@@ -27,7 +27,7 @@ struct vt_mode {
27#define VT_SETMODE 0x5602 /* set mode of active vt */ 27#define VT_SETMODE 0x5602 /* set mode of active vt */
28#define VT_AUTO 0x00 /* auto vt switching */ 28#define VT_AUTO 0x00 /* auto vt switching */
29#define VT_PROCESS 0x01 /* process controls switching */ 29#define VT_PROCESS 0x01 /* process controls switching */
30#define VT_PROCESS_AUTO 0x02 /* process is notified of switching */ 30#define VT_ACKACQ 0x02 /* acknowledge switch */
31 31
32struct vt_stat { 32struct vt_stat {
33 unsigned short v_active; /* active vt */ 33 unsigned short v_active; /* active vt */
@@ -38,7 +38,6 @@ struct vt_stat {
38#define VT_SENDSIG 0x5604 /* signal to send to bitmask of vts */ 38#define VT_SENDSIG 0x5604 /* signal to send to bitmask of vts */
39 39
40#define VT_RELDISP 0x5605 /* release display */ 40#define VT_RELDISP 0x5605 /* release display */
41#define VT_ACKACQ 0x02 /* acknowledge switch */
42 41
43#define VT_ACTIVATE 0x5606 /* make vt active */ 42#define VT_ACTIVATE 0x5606 /* make vt active */
44#define VT_WAITACTIVE 0x5607 /* wait for vt active */ 43#define VT_WAITACTIVE 0x5607 /* wait for vt active */