Eric W. Biederman 98a27ba485 tty: introduce no_tty and use it in selinux ... While researching the tty layer pid leaks I found a weird case in selinux when we drop a controlling tty because of inadequate permissions we don't do the normal hangup processing. Which is a problem if it happens the session leader has exec'd something that can no longer access the tty. We already have code in the kernel to handle this case in the form of the TIOCNOTTY ioctl. So this patch factors out a helper function that is the essence of that ioctl and calls it from the selinux code. This removes the inconsistency in handling dropping of a controlling tty and who knows it might even make some part of user space happy because it received a SIGHUP it was expecting. In addition since this removes the last user of proc_set_tty outside of tty_io.c proc_set_tty is made static and removed from tty.h Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Acked-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: James Morris <jmorris@namei.org> Cc: Stephen Smalley <sds@tycho.nsa.gov> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2007-05-08 11:15:04 -07:00
..
agp	Merge branch 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6	2007-05-05 14:55:20 -07:00
drm	Merge branch 'drm-patches' of master.kernel.org:/pub/scm/linux/kernel/git/airlied/drm-2.6	2007-05-07 12:24:07 -07:00
hw_random	Use stop_machine_run in the Intel RNG driver	2007-05-08 11:15:00 -07:00
ip2	Fix bogus 'inline' in drivers/char/ip2/i2lib.c	2007-02-21 11:18:26 -08:00
ipmi	ipmi: add pci remove handling	2007-05-08 11:14:58 -07:00
mwave	[PATCH] mwave: interesting flags savings	2007-02-20 17:10:14 -08:00
pcmcia	PCI: Cleanup the includes of <linux/pci.h>	2007-05-02 19:02:35 -07:00
rio	rio: typo in bitwise AND expression.	2007-02-17 18:57:09 +01:00
tpm	tpm_infineon: add support for devices in mmio space	2007-05-08 11:15:02 -07:00
watchdog	PCI: Cleanup the includes of <linux/pci.h>	2007-05-02 19:02:35 -07:00
.gitignore	[MIPS] Remove IT8172-based platforms, ITE 8172G and Globespan IVR support.	2006-10-03 17:59:17 +01:00
amiserial.c	[PATCH] CHAR-Amiserial: turn local_save_flags() + local_irq_disable() into local_irq_save()	2007-02-11 11:18:07 -08:00
apm-emulation.c	[APM] Add shared version of APM emulation	2007-02-09 17:08:57 +00:00
applicom.c	IRQ: Maintain regs pointer globally rather than passing to IRQ handlers	2006-10-05 15:10:12 +01:00
applicom.h
briq_panel.c	Revert "[POWERPC] Rename get_property to of_get_property: drivers"	2007-04-26 22:24:31 +10:00
cd1865.h
ChangeLog
consolemap.c	[PATCH] getting rid of all casts of k[cmz]alloc() calls	2006-12-13 09:05:58 -08:00
cp437.uni
cs5535_gpio.c	[PATCH] struct path: convert char-drivers	2006-12-08 08:28:44 -08:00
cyclades.c	cyclades: remove custom types	2007-05-08 11:15:03 -07:00
decserial.c	[PATCH] dz: Fixes to make it work	2006-12-07 08:39:41 -08:00
defkeymap.c_shipped
defkeymap.map
digi1.h
digiFep1.h
digiPCI.h
ds1286.c	[CHAR] ds1286: Fix handling of seconds in RTC_ALM_SET ioctl.	2007-03-08 01:10:30 +00:00
ds1302.c	[PATCH] DS1302: local_irq_disable() is redundant after local_irq_save()	2007-02-12 09:48:30 -08:00
ds1620.c	[PATCH] remove many unneeded #includes of sched.h	2007-02-14 08:09:54 -08:00
dsp56k.c	[PATCH] remove many unneeded #includes of sched.h	2007-02-14 08:09:54 -08:00
dtlk.c	[PATCH] Char: timers cleanup	2007-02-12 09:48:30 -08:00
ec3104_keyb.c	IRQ: Maintain regs pointer globally rather than passing to IRQ handlers	2006-10-05 15:10:12 +01:00
efirtc.c
epca.c	[PATCH] char/epca.c: remove unused function	2007-03-05 07:57:53 -08:00
epca.h	[PATCH] char: kill unneeded memsets	2006-10-04 07:55:13 -07:00
epcaconfig.h
esp.c	[PATCH] tty: switch to ktermios	2006-12-08 08:28:57 -08:00
generic_nvram.c	[PATCH] mark struct file_operations const 3	2007-02-12 09:48:45 -08:00
generic_serial.c	[PATCH] generic_serial: fix decoding of baud rate	2007-03-27 09:05:15 -07:00
genrtc.c	WorkStruct: make allyesconfig	2006-11-22 14:57:56 +00:00
hangcheck-timer.c	[PATCH] time: x86_64: convert x86_64 to use GENERIC_TIME	2007-02-16 08:14:00 -08:00
hpet.c	[PATCH] sysctl: remove insert_at_head from register_sysctl	2007-02-14 08:09:59 -08:00
hvc_beat.c	[POWERPC] Celleb: hypervisor console driver	2007-02-07 14:03:21 +11:00
hvc_console.c	drivers/char/hvc_console.c: cleanups	2007-05-08 11:14:59 -07:00
hvc_console.h
hvc_iseries.c	[POWERPC] Rename get_property to of_get_property: partial drivers	2007-04-27 15:51:56 +10:00
hvc_rtas.c
hvc_vio.c	[POWERPC] Rename get_property to of_get_property: partial drivers	2007-04-27 15:51:56 +10:00
hvcs.c	[PATCH] tty: switch to ktermios	2006-12-08 08:28:57 -08:00
hvsi.c	[POWERPC] Rename get_property to of_get_property: partial drivers	2007-04-27 15:51:56 +10:00
i8k.c
ip27-rtc.c
isicom.c	[PATCH] Char: tty_wakeup cleanup	2007-02-11 10:51:26 -08:00
istallion.c	[PATCH] Char: tty_wakeup cleanup	2007-02-11 10:51:26 -08:00
Kconfig	rename TANBAC TB0219 config	2007-05-07 12:13:04 -07:00
keyboard.c	Input: keyboard handler - use printk_ratelimit()	2007-04-12 01:30:52 -04:00
lcd.c	[CHAR] lcd: Fix two warnings.	2007-03-17 01:03:26 +00:00
lcd.h	[MIPS] Add MTD device support for Cobalt	2007-02-20 17:11:55 +00:00
lp.c	[PATCH] getting rid of all casts of k[cmz]alloc() calls	2006-12-13 09:05:58 -08:00
Makefile	rename TANBAC TB0219 config	2007-05-07 12:13:04 -07:00
mbcs.c	[PATCH] mark struct file_operations const 3	2007-02-12 09:48:45 -08:00
mbcs.h
mem.c	fix bogon in /dev/mem mmap'ing on nommu	2007-04-17 16:36:27 -07:00
misc.c	[PATCH] Correct misc_register return code handling in several drivers	2006-12-07 08:39:35 -08:00
mmtimer.c	[PATCH] Correct misc_register return code handling in several drivers	2006-12-07 08:39:35 -08:00
moxa.c	[PATCH] Char: moxa, pci probing	2007-02-11 10:51:30 -08:00
mspec.c	[PATCH] mark struct file_operations const 3	2007-02-12 09:48:45 -08:00
mxser.c	Char: mxser, fix TIOCMIWAIT	2007-04-24 08:23:08 -07:00
mxser.h	[PATCH] mxser: remove ambiguous redefinition of INIT_WORK	2007-02-11 10:51:25 -08:00
mxser_new.c	Char: mxser_new, fix TIOCMIWAIT	2007-04-24 08:23:07 -07:00
mxser_new.h	[PATCH] Char: mxser_new, upgrade to 1.9.15	2007-02-11 10:51:29 -08:00
n_hdlc.c
n_r3964.c	[PATCH] Char: timers cleanup	2007-02-12 09:48:30 -08:00
n_tty.c	[PATCH] tty: update the tty layer to work with struct pid	2007-02-12 09:48:32 -08:00
nsc_gpio.c	[PATCH] struct path: convert char-drivers	2006-12-08 08:28:44 -08:00
nvram.c	[PATCH] remove many unneeded #includes of sched.h	2007-02-14 08:09:54 -08:00
nwbutton.c	[PATCH] Char: timers cleanup	2007-02-12 09:48:30 -08:00
nwbutton.h	IRQ: Maintain regs pointer globally rather than passing to IRQ handlers	2006-10-05 15:10:12 +01:00
nwflash.c	[PATCH] remove many unneeded #includes of sched.h	2007-02-14 08:09:54 -08:00
pc8736x_gpio.c
ppdev.c	[PATCH] struct path: convert char-drivers	2006-12-08 08:28:44 -08:00
pty.c	[PATCH] remove many unneeded #includes of sched.h	2007-02-14 08:09:54 -08:00
random.c	[NET]: random functions can use nsec resolution instead of usec	2007-04-25 22:28:25 -07:00
raw.c	[PATCH] raw: don't allow the creation of a raw device with minor number 0	2007-02-11 10:51:34 -08:00
riscom8.c	[PATCH] Char: tty_wakeup cleanup	2007-02-11 10:51:26 -08:00
riscom8.h
riscom8_reg.h
rocket.c	rocket: remove modversions include	2007-05-08 11:15:02 -07:00
rocket.h
rocket_int.h
rtc.c	[PATCH] sysctl: remove insert_at_head from register_sysctl	2007-02-14 08:09:59 -08:00
scc.h
scx200_gpio.c
selection.c
ser_a2232.c	[PATCH] remove many unneeded #includes of sched.h	2007-02-14 08:09:54 -08:00
ser_a2232.h
ser_a2232fw.ax
ser_a2232fw.h
serial167.c	[PATCH] Char: serial167, cleanup	2007-02-11 10:51:28 -08:00
snsc.c	IRQ: Maintain regs pointer globally rather than passing to IRQ handlers	2006-10-05 15:10:12 +01:00
snsc.h
snsc_event.c	IRQ: Maintain regs pointer globally rather than passing to IRQ handlers	2006-10-05 15:10:12 +01:00
sonypi.c	sonypi: use mutex instead of semaphore	2007-04-28 22:13:34 -04:00
specialix.c	[PATCH] Char: timers cleanup	2007-02-12 09:48:30 -08:00
specialix_io8.h
stallion.c	[PATCH] Char: stallion, use dynamic dev	2006-12-08 08:28:59 -08:00
sx.c	[PATCH] sx: fix non-PCI build	2006-12-13 09:05:49 -08:00
sx.h	[PATCH] Char: sx, request regions	2006-12-08 08:28:59 -08:00
sxboards.h
sxwindow.h
synclink.c	drivers/char/synclink.c: check kmalloc() return value	2007-05-08 11:15:02 -07:00
synclink_gt.c	[PATCH] Char: timers cleanup	2007-02-12 09:48:30 -08:00
synclinkmp.c	[PATCH] Char: timers cleanup	2007-02-12 09:48:30 -08:00
sysrq.c	[PATCH] Add SysRq-Q to print timer_list debug info	2007-02-16 08:13:59 -08:00
tb0219.c	[PATCH] struct path: convert char-drivers	2006-12-08 08:28:44 -08:00
tipar.c	[PATCH] struct path: convert char-drivers	2006-12-08 08:28:44 -08:00
tlclk.c	[PATCH] remove many unneeded #includes of sched.h	2007-02-14 08:09:54 -08:00
toshiba.c	[PATCH] remove many unneeded #includes of sched.h	2007-02-14 08:09:54 -08:00
tty_io.c	tty: introduce no_tty and use it in selinux	2007-05-08 11:15:04 -07:00
tty_ioctl.c	[PATCH] tty: improve encode_baud_rate logic	2007-02-11 10:51:32 -08:00
vc_screen.c	[PATCH] remove many unneeded #includes of sched.h	2007-02-14 08:09:54 -08:00
viocons.c	[POWERPC] iSeries: fix viocons init	2006-12-20 16:37:48 +11:00
viotape.c	[PATCH] mark struct file_operations const 3	2007-02-12 09:48:45 -08:00
vme_scc.c	[PATCH] remove many unneeded #includes of sched.h	2007-02-14 08:09:54 -08:00
vr41xx_giu.c	[MIPS] Vr41xx: Fix after GENERIC_HARDIRQS_NO__DO_IRQ change	2007-01-23 18:26:47 +00:00
vt.c	[PATCH] Initialise SAK member for each virtual console to prevent oops	2007-03-16 19:25:06 -07:00
vt_ioctl.c	[PATCH] vt: fix potential race in VT_WAITACTIVE handler	2007-04-02 10:06:09 -07:00