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linux-2.6
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linux-2.6/kernel
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Will Drewry a0727e8ce5 signal, x86: add SIGSYS info and make it synchronous. 
This change enables SIGSYS, defines _sigfields._sigsys, and adds
x86 (compat) arch support.  _sigsys defines fields which allow
a signal handler to receive the triggering system call number,
the relevant AUDIT_ARCH_* value for that number, and the address
of the callsite.

SIGSYS is added to the SYNCHRONOUS_MASK because it is desirable for it
to have setup_frame() called for it. The goal is to ensure that
ucontext_t reflects the machine state from the time-of-syscall and not
from another signal handler.

The first consumer of SIGSYS would be seccomp filter.  In particular,
a filter program could specify a new return value, SECCOMP_RET_TRAP,
which would result in the system call being denied and the calling
thread signaled.  This also means that implementing arch-specific
support can be dependent upon HAVE_ARCH_SECCOMP_FILTER.

Suggested-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Will Drewry <wad@chromium.org>
Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Reviewed-by: H. Peter Anvin <hpa@zytor.com>
Acked-by: Eric Paris <eparis@redhat.com>

v18: - added acked by, rebase
v17: - rebase and reviewed-by addition
v14: - rebase/nochanges
v13: - rebase on to 88ebdda615
v12: - reworded changelog (oleg@redhat.com)
v11: - fix dropped words in the change description
     - added fallback copy_siginfo support.
     - added __ARCH_SIGSYS define to allow stepped arch support.
v10: - first version based on suggestion
Signed-off-by: James Morris <james.l.morris@oracle.com>
 		2012-04-14 11:13:21 +10:00
..
debug KGDB/KDB regression fixes 2012-04-04 17:26:08 -07:00
events Merge branch 'linus' into perf/urgent 2012-03-26 17:19:03 +02:00
gcov
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irq Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2012-03-30 18:08:05 -07:00
power PM / QoS: add pm_qos_update_request_timeout() API 2012-03-28 23:31:24 +02:00
sched Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2012-03-31 13:35:31 -07:00
time Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2012-03-29 14:16:48 -07:00
trace Merge branch 'akpm' (Andrew's patch-bomb) 2012-04-05 15:30:34 -07:00
.gitignore
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Kconfig.freezer
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Kconfig.hz
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Kconfig.locks locking/kconfig: Simplify INLINE_SPIN_UNLOCK usage 2012-03-23 13:18:57 +01:00
Kconfig.preempt locking/kconfig: Simplify INLINE_SPIN_UNLOCK usage 2012-03-23 13:18:57 +01:00
Makefile
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acct.c
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async.c
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audit.c constify path argument of audit_log_d_path() 2012-03-20 21:29:40 -04:00
audit.h
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audit_tree.c
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audit_watch.c
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auditfilter.c
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auditsc.c seccomp: remove duplicated failure logging 2012-04-14 11:13:20 +10:00
backtracetest.c
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bounds.c
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capability.c
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cgroup.c cgroup: cgroup_attach_task() could return -errno after success 2012-03-29 22:03:33 -07:00
cgroup_freezer.c
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compat.c
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configs.c
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cpu.c
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cpu_pm.c
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cpuset.c Autogenerated GPG tag for Rusty D1ADB8F1: 15EE 8D6C AB0E 7F0C F999 BFCB D920 0E6C D1AD B8F1 2012-04-02 08:53:24 -07:00
crash_dump.c
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cred.c
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delayacct.c
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dma.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
elfcore.c
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exec_domain.c
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exit.c Merge branch 'x86-x32-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2012-03-29 18:12:23 -07:00
extable.c
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fork.c seccomp: add system call filtering using BPF 2012-04-14 11:13:20 +10:00
freezer.c PM / Freezer: Remove references to TIF_FREEZE in comments 2012-03-04 23:08:54 +01:00
futex.c futex: Mark get_robust_list as deprecated 2012-03-29 11:37:17 +02:00
futex_compat.c futex: Mark get_robust_list as deprecated 2012-03-29 11:37:17 +02:00
groups.c
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hrtimer.c
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hung_task.c hung_task: fix the broken rcu_lock_break() logic 2012-03-05 15:49:42 -08:00
irq_work.c irq_work: fix compile failure on MIPS from system.h split 2012-04-02 08:48:04 -07:00
itimer.c
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jump_label.c static keys: Inline the static_key_enabled() function 2012-02-28 20:01:08 +01:00
kallsyms.c
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kexec.c Merge branch 'akpm' (Andrew's patch-bomb) 2012-03-28 17:19:28 -07:00
kfifo.c
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kmod.c PM / Sleep: Mitigate race between the freezer and request_firmware() 2012-03-28 23:30:28 +02:00
kprobes.c kprobes: return proper error code from register_kprobe() 2012-03-05 15:49:42 -08:00
ksysfs.c
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kthread.c
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latencytop.c
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lockdep.c lockdep: Add CPU-idle/offline warning to lockdep-RCU splat 2012-02-21 09:06:06 -08:00
lockdep_internals.h
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lockdep_proc.c
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lockdep_states.h
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module.c module: Remove module size limit 2012-03-26 12:50:53 +10:30
mutex-debug.c
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mutex-debug.h
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mutex.c sched/rt: Use schedule_preempt_disabled() 2012-03-01 10:28:03 +01:00
mutex.h
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notifier.c
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nsproxy.c
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padata.c padata: Fix cpu hotplug 2012-03-29 19:52:46 +08:00
panic.c
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params.c params: <level>_initcall-like kernel parameters 2012-03-26 12:50:51 +10:30
pid.c
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pid_namespace.c pidns: add reboot_pid_ns() to handle the reboot syscall 2012-03-28 17:14:36 -07:00
posix-cpu-timers.c
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posix-timers.c
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printk.c Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2012-03-20 10:31:44 -07:00
profile.c
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ptrace.c ptrace: remove PTRACE_SEIZE_DEVEL bit 2012-03-23 16:58:41 -07:00
range.c
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rcu.h rcu: Allow nesting of rcu_idle_enter() and rcu_idle_exit() 2012-02-21 09:06:12 -08:00
rcupdate.c rcu: Check for illegal use of RCU from offlined CPUs 2012-02-21 09:06:03 -08:00
rcutiny.c rcu: Add RCU_NONIDLE() for idle-loop RCU read-side critical sections 2012-02-21 09:06:13 -08:00
rcutiny_plugin.h
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rcutorture.c PTR_ERR should be called before its argument is cleared. 2012-02-21 09:06:10 -08:00
rcutree.c rcu: Stop spurious warnings from synchronize_sched_expedited 2012-02-21 15:33:34 -08:00
rcutree.h rcu: Rework detection of use of RCU by offline CPUs 2012-02-21 09:06:07 -08:00
rcutree_plugin.h rcu: Hold off RCU_FAST_NO_HZ after timer posted 2012-02-21 09:42:30 -08:00
rcutree_trace.c rcu: Rework detection of use of RCU by offline CPUs 2012-02-21 09:06:07 -08:00
relay.c
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res_counter.c
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resource.c
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rtmutex-debug.c
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rtmutex-debug.h
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rtmutex-tester.c
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rtmutex.c
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rtmutex.h
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rtmutex_common.h
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rwsem.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
seccomp.c seccomp: add SECCOMP_RET_ERRNO 2012-04-14 11:13:21 +10:00
semaphore.c
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signal.c signal, x86: add SIGSYS info and make it synchronous. 2012-04-14 11:13:21 +10:00
smp.c smp: add func to IPI cpus based on parameter func 2012-03-28 17:14:35 -07:00
softirq.c Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2012-03-20 10:32:09 -07:00
spinlock.c locking/kconfig: Simplify INLINE_SPIN_UNLOCK usage 2012-03-23 13:18:57 +01:00
srcu.c rcu: Call out dangers of expedited RCU primitives 2012-02-21 09:06:08 -08:00
stacktrace.c
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stop_machine.c
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sys.c seccomp: add system call filtering using BPF 2012-04-14 11:13:20 +10:00
sys_ni.c
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sysctl.c sysctl: fix write access to dmesg_restrict/kptr_restrict 2012-04-05 14:51:43 +10:00
sysctl_binary.c
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taskstats.c
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test_kprobes.c
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time.c time: Remove bogus comments 2012-03-15 18:17:55 -07:00
timeconst.pl
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timer.c
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tracepoint.c static keys: Introduce 'struct static_key', static_key_true()/false() and static_key_slow_[inc|dec]() 2012-02-24 10:05:59 +01:00
tsacct.c
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uid16.c
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up.c
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user-return-notifier.c
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user.c
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user_namespace.c
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utsname.c
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utsname_sysctl.c
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wait.c
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watchdog.c kernel/watchdog.c: add comment to watchdog() exit path 2012-03-23 16:58:32 -07:00
workqueue.c Merge branch 'for-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq 2012-03-20 18:13:22 -07:00
workqueue_sched.h
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