Cedric Le Goater 9ec52099e4 [PATCH] replace cad_pid by a struct pid ...

There are a few places in the kernel where the init task is signaled.  The
ctrl+alt+del sequence is one them.  It kills a task, usually init, using a
cached pid (cad_pid).

This patch replaces the pid_t by a struct pid to avoid pid wrap around
problem.  The struct pid is initialized at boot time in init() and can be
modified through systctl with

	/proc/sys/kernel/cad_pid

[ I haven't found any distro using it ? ]

It also introduces a small helper routine kill_cad_pid() which is used
where it seemed ok to use cad_pid instead of pid 1.

[akpm@osdl.org: cleanups, build fix]
Signed-off-by: Cedric Le Goater <clg@fr.ibm.com>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

2006-10-02 07:57:25 -07:00

..

irq

[PATCH] irq: remove a extra line

2006-09-29 09:18:07 -07:00

power

[PATCH] namespaces: utsname: use init_utsname when appropriate

2006-10-02 07:57:21 -07:00

time

[PATCH] kernel/time/ntp.c: possible cleanups

2006-10-01 00:39:27 -07:00

.gitignore

gitignore: ignore more generated files

2006-01-03 11:35:26 +01:00

acct.c

[PATCH] csa: convert CONFIG tag for extended accounting routines

2006-10-01 00:39:29 -07:00

audit.c

[PATCH] selinux: rename selinux_ctxid_to_string

2006-09-26 08:48:52 -07:00

audit.h

[PATCH] audit: AUDIT_PERM support

2006-09-11 13:32:30 -04:00

auditfilter.c

[PATCH] selinux: rename selinux_ctxid_to_string

2006-09-26 08:48:52 -07:00

auditsc.c

[PATCH] audit/accounting: tty locking

2006-09-29 09:18:25 -07:00

capability.c

[PATCH] pidspace: is_init()

2006-09-29 09:18:12 -07:00

compat.c

[PATCH] BLOCK: Move extern declarations out of fs/*.c into header files [try #6]

2006-09-30 20:52:18 +02:00

configs.c

Remove obsolete #include <linux/config.h>

2006-06-30 19:25:36 +02:00

cpu.c

[PATCH] Disable CPU hotplug during suspend

2006-09-26 08:48:59 -07:00

cpuset.c

[PATCH] r/o bind mount prepwork: inc_nlink() helper

2006-10-01 00:39:30 -07:00

delayacct.c

[PATCH] task delay accounting fixes

2006-09-01 11:39:08 -07:00

dma.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

exec_domain.c

Remove obsolete #include <linux/config.h>

2006-06-30 19:25:36 +02:00

exit.c

[PATCH] namespaces: exit_task_namespaces() invalidates nsproxy

2006-10-02 07:57:21 -07:00

extable.c

[PATCH] symbol_put_addr() locks kernel

2006-05-15 11:20:55 -07:00

fork.c

[PATCH] IPC namespace - utils

2006-10-02 07:57:22 -07:00

futex_compat.c

[PATCH] futex: Apply recent futex fixes to futex_compat

2006-08-06 08:57:49 -07:00

futex.c

[PATCH] file: modify struct fown_struct to use a struct pid

2006-10-02 07:57:14 -07:00

hrtimer.c

[PATCH] posix-timers: Fix clock_nanosleep() doesn't return the remaining time in compatibility mode

2006-09-29 09:18:15 -07:00

itimer.c

[PATCH] hrtimers: remove data field

2006-03-26 08:57:03 -08:00

kallsyms.c

[PATCH] Kprobes: Make kprobe modules more portable

2006-10-02 07:57:16 -07:00

Kconfig.hz

[PATCH] i386: Selectable Frequency of the Timer Interrupt

2005-06-23 09:45:10 -07:00

Kconfig.preempt

[PATCH] sched: voluntary kernel preemption

2005-06-25 16:24:45 -07:00

kexec.c

[PATCH] kexec warning fix

2006-09-29 09:18:15 -07:00

kfifo.c

[PATCH] memory ordering in __kfifo primitives

2006-09-29 09:18:13 -07:00

kmod.c

[PATCH] introduce kernel_execve

2006-10-02 07:57:23 -07:00

kprobes.c

[PATCH] kretprobe spinlock deadlock patch

2006-10-02 07:57:16 -07:00

ksysfs.c

Remove obsolete #include <linux/config.h>

2006-06-30 19:25:36 +02:00

kthread.c

[PATCH] remove kernel/kthread.c:kthread_stop_sem()

2006-07-14 21:53:52 -07:00

latency.c

[PATCH] maximum latency tracking infrastructure

2006-10-01 00:39:19 -07:00

lockdep_internals.h

[PATCH] lockdep: double the number of stack-trace entries

2006-09-13 07:32:14 -07:00

lockdep_proc.c

[PATCH] lockdep: procfs

2006-07-03 15:27:04 -07:00

lockdep.c

[PATCH] namespaces: utsname: use init_utsname when appropriate

2006-10-02 07:57:21 -07:00

Makefile

[PATCH] namespaces: utsname: implement utsname namespaces

2006-10-02 07:57:21 -07:00

module.c

[PATCH] list module taint flags in Oops/panic

2006-10-02 07:57:12 -07:00

mutex-debug.c

[PATCH] lockdep: prove mutex locking correctness

2006-07-03 15:27:04 -07:00

mutex-debug.h

[PATCH] lockdep: better lock debugging

2006-07-03 15:27:01 -07:00

mutex.c

[PATCH] lockdep: prove mutex locking correctness

2006-07-03 15:27:04 -07:00

mutex.h

[PATCH] lockdep: prove mutex locking correctness

2006-07-03 15:27:04 -07:00

nsproxy.c

[PATCH] nsproxy cloning error path fix

2006-10-02 07:57:22 -07:00

panic.c

[PATCH] x86: Clean up x86 NMI sysctls

2006-09-30 01:47:55 +02:00

params.c

[PATCH] module_subsys: initialize earlier

2006-09-29 09:18:08 -07:00

pid.c

[PATCH] introduce get_task_pid() to fix unsafe get_pid()

2006-10-02 07:57:25 -07:00

posix-cpu-timers.c

[PATCH] posix-timers: Fix the flags handling in posix_cpu_nsleep()

2006-09-29 09:18:15 -07:00

posix-timers.c

[PATCH] posix-timers: Fix clock_nanosleep() doesn't return the remaining time in compatibility mode

2006-09-29 09:18:15 -07:00

printk.c

[PATCH] PM: make it possible to disable console suspending

2006-09-26 08:49:03 -07:00

profile.c

[PATCH] Profiling: require buffer allocation on the correct node

2006-09-26 08:48:50 -07:00

ptrace.c

[PATCH] pidspace: is_init()

2006-09-29 09:18:12 -07:00

rcupdate.c

[PATCH] rcu_do_batch: make ->qlen decrement irq safe

2006-09-13 07:32:14 -07:00

rcutorture.c

[PATCH] rcu: add lock annotations to rcu{,_bh}_torture_read_{lock,unlock}

2006-09-29 09:18:08 -07:00

relay.c

[PATCH] kernel-doc for relay interface

2006-09-29 09:18:06 -07:00

resource.c

Resources: insert identical resources above existing resources

2006-09-26 17:43:52 -07:00

rtmutex_common.h

[PATCH] pi-futex: futex_lock_pi/futex_unlock_pi support

2006-06-27 17:32:47 -07:00

rtmutex-debug.c

[PATCH] sched: cleanup, remove task_t, convert to struct task_struct

2006-07-03 15:27:11 -07:00

rtmutex-debug.h

[PATCH] lockdep: better lock debugging

2006-07-03 15:27:01 -07:00

rtmutex-tester.c

[PATCH] Add try_to_freeze() to rt-test kthreads

2006-07-14 21:53:53 -07:00

rtmutex.c

[PATCH] clean up and remove some extra spinlocks from rtmutex

2006-09-29 09:18:09 -07:00

rtmutex.h

[PATCH] lockdep: better lock debugging

2006-07-03 15:27:01 -07:00

rwsem.c

[PATCH] lockdep: prove rwsem locking correctness

2006-07-03 15:27:04 -07:00

sched.c

[PATCH] cpumask: export cpu_online_map and cpu_possible_map consistently

2006-10-02 07:57:17 -07:00

seccomp.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

signal.c

[PATCH] usb: fixup usb so it uses struct pid

2006-10-02 07:57:15 -07:00

softirq.c

[PATCH] check return value of cpu_callback

2006-09-29 09:18:14 -07:00

softlockup.c

[PATCH] check return value of cpu_callback

2006-09-29 09:18:14 -07:00

spinlock.c

[PATCH] Directed yield: cpu_relax variants for spinlocks and rw-locks

2006-10-01 00:39:21 -07:00

stacktrace.c

[PATCH] lockdep: stacktrace subsystem, core

2006-07-03 15:27:02 -07:00

stop_machine.c

[PATCH] stop_machine.c copyright

2006-09-29 09:18:24 -07:00

sys_ni.c

[PATCH] BLOCK: Make it possible to disable the block layer [try #6]

2006-09-30 20:52:31 +02:00

sys.c

[PATCH] replace cad_pid by a struct pid

2006-10-02 07:57:25 -07:00

sysctl.c

[PATCH] replace cad_pid by a struct pid

2006-10-02 07:57:25 -07:00

taskstats.c

[PATCH] csa: Extended system accounting over taskstats

2006-10-01 00:39:29 -07:00

time.c

[PATCH] NTP: Move all the NTP related code to ntp.c

2006-10-01 00:39:26 -07:00

timer.c

[PATCH] kill wall_jiffies

2006-10-01 00:39:27 -07:00

tsacct.c

[PATCH] csa accounting taskstats update

2006-10-01 00:39:29 -07:00

uid16.c

[PATCH] Add more prevent_tail_call()

2006-04-19 16:27:18 -07:00

unwind.c

[PATCH] unwind: fix unused variable warning when !CONFIG_MODULES

2006-09-29 09:18:11 -07:00

user.c

[PATCH] selinux: add hooks for key subsystem

2006-06-22 15:05:55 -07:00

utsname.c

[PATCH] namespaces: utsname: implement CLONE_NEWUTS flag

2006-10-02 07:57:22 -07:00

wait.c

[PATCH] uninline init_waitqueue_head()

2006-07-10 13:24:25 -07:00

workqueue.c

[PATCH] workqueue: remove lock_cpu_hotplug()

2006-08-14 12:54:29 -07:00