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f8df13e0a9
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Petr Písař f8df13e0a9 tty: Clean console safely 
Traditional \E[2J sequence erases console display but scroll-back
buffer and underlying device (frame) buffer keep data that can be
accessed by scrolling console back.

This patch introduce new \E[J parameter 3 that allows to scramble
scroll-back buffer explicitly. Session locking programs (screen,
vlock) can use it to prevent attacker to browse locked console
history.

Signed-off-by: Petr Písař <ppisar@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-19 16:33:37 -07:00
..
hvc Fix common misspellings 2011-03-31 11:26:23 -03:00
ipwireless tty: remove invalid location line in file header 2011-04-19 16:33:36 -07:00
serial Serial: ifx6x60c: Remove duplicate includes of linux/tty.h 2011-04-19 16:33:37 -07:00
vt tty: Clean console safely 2011-04-19 16:33:37 -07:00
amiserial.c tty: remove invalid location line in file header 2011-04-19 16:33:36 -07:00
bfin_jtag_comm.c drivers/tty/bfin_jtag_comm.c: avoid calling put_tty_driver on NULL 2011-03-23 19:46:39 -07:00
cyclades.c tty: remove invalid location line in file header 2011-04-19 16:33:36 -07:00
isicom.c tty: move a number of tty drivers from drivers/char/ to drivers/tty/ 2011-02-22 16:14:56 -08:00
Kconfig tty: move a number of tty drivers from drivers/char/ to drivers/tty/ 2011-02-22 16:14:56 -08:00
Makefile tty: move ipwireless driver from drivers/char/pcmcia/ to drivers/tty/ 2011-02-22 16:23:22 -08:00
moxa.c Char: moxa, do not touch NORMAL_ACTIVE bit 2011-04-19 16:32:19 -07:00
moxa.h tty: move a number of tty drivers from drivers/char/ to drivers/tty/ 2011-02-22 16:14:56 -08:00
mxser.c tty: move a number of tty drivers from drivers/char/ to drivers/tty/ 2011-02-22 16:14:56 -08:00
mxser.h Fix common misspellings 2011-03-31 11:26:23 -03:00
n_gsm.c Fix common misspellings 2011-03-31 11:26:23 -03:00
n_hdlc.c drivers: remove extraneous includes of smp_lock.h 2011-03-02 00:02:40 +01:00
n_r3964.c drivers: remove extraneous includes of smp_lock.h 2011-03-02 00:02:40 +01:00
n_tty.c tty: fix endless work loop when the buffer fills up 2011-04-04 14:26:54 -07:00
nozomi.c Fix common misspellings 2011-03-31 11:26:23 -03:00
pty.c tty: remove invalid location line in file header 2011-04-19 16:33:36 -07:00
rocket_int.h tty: move a number of tty drivers from drivers/char/ to drivers/tty/ 2011-02-22 16:14:56 -08:00
rocket.c TTY: rocket, remove unused variables 2011-04-19 14:41:48 -07:00
rocket.h tty: move a number of tty drivers from drivers/char/ to drivers/tty/ 2011-02-22 16:14:56 -08:00
synclink_gt.c Fix common misspellings 2011-03-31 11:26:23 -03:00
synclink.c tty: remove invalid location line in file header 2011-04-19 16:33:36 -07:00
synclinkmp.c Fix common misspellings 2011-03-31 11:26:23 -03:00
sysrq.c lib, arch: add filter argument to show_mem and fix private implementations 2011-03-24 17:49:37 -07:00
tty_audit.c tty_audit: fix tty_audit_add_data live lock on audit disabled 2011-03-07 12:04:50 -08:00
tty_buffer.c tty: fix endless work loop when the buffer fills up 2011-04-04 14:26:54 -07:00
tty_io.c tty: remove invalid location line in file header 2011-04-19 16:33:36 -07:00
tty_ioctl.c tty: remove invalid location line in file header 2011-04-19 16:33:36 -07:00
tty_ldisc.c TTY: introduce deinit helpers for proper ldisc shutdown 2011-04-19 14:43:01 -07:00
tty_mutex.c tty: remove invalid location line in file header 2011-04-19 16:33:36 -07:00
tty_port.c