The patch titled
Subject: signal: make unhandled_signal() return bool
has been added to the -mm tree. Its filename is
signal-make-unhandled_signal-return-bool.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/signal-make-unhandled_signal-return-bool.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/signal-make-unhandled_signal-return-bool.patch
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*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Christian Brauner <christian@xxxxxxxxxx>
Subject: signal: make unhandled_signal() return bool
unhandled_signal() already behaves like a boolean function. Let's
actually declare it as such too. All callers treat it as such too.
Link: http://lkml.kernel.org/r/20180602103653.18181-13-christian@xxxxxxxxxx
Signed-off-by: Christian Brauner <christian@xxxxxxxxxx>
Reviewed-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Cc: Eric W. Biederman <ebiederm@xxxxxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: James Morris <james.morris@xxxxxxxxxxxxx>
Cc: Kees Cook <keescook@xxxxxxxxxxxx>
Cc: Oleg Nesterov <oleg@xxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Stephen Smalley <sds@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/signal.h | 2 +-
kernel/signal.c | 8 +++++---
2 files changed, 6 insertions(+), 4 deletions(-)
diff -puN include/linux/signal.h~signal-make-unhandled_signal-return-bool include/linux/signal.h
--- a/include/linux/signal.h~signal-make-unhandled_signal-return-bool
+++ a/include/linux/signal.h
@@ -287,7 +287,7 @@ static inline void disallow_signal(int s
extern struct kmem_cache *sighand_cachep;
-int unhandled_signal(struct task_struct *tsk, int sig);
+extern bool unhandled_signal(struct task_struct *tsk, int sig);
/*
* In POSIX a signal is sent either to a specific thread (Linux task)
diff -puN kernel/signal.c~signal-make-unhandled_signal-return-bool kernel/signal.c
--- a/kernel/signal.c~signal-make-unhandled_signal-return-bool
+++ a/kernel/signal.c
@@ -505,13 +505,15 @@ flush_signal_handlers(struct task_struct
}
}
-int unhandled_signal(struct task_struct *tsk, int sig)
+bool unhandled_signal(struct task_struct *tsk, int sig)
{
void __user *handler = tsk->sighand->action[sig-1].sa.sa_handler;
if (is_global_init(tsk))
- return 1;
+ return true;
+
if (handler != SIG_IGN && handler != SIG_DFL)
- return 0;
+ return false;
+
/* if ptraced, let the tracer determine */
return !tsk->ptrace;
}
_
Patches currently in -mm which might be from christian@xxxxxxxxxx are
signal-make-force_sigsegv-void.patch
signal-make-kill_as_cred_perm-return-bool.patch
signal-make-may_ptrace_stop-return-bool.patch
signal-make-do_sigpending-void.patch
signal-simplify-rt_sigaction.patch
signal-make-kill_ok_by_cred-return-bool.patch
signal-make-sig_handler_ignored-return-bool.patch
signal-make-sig_task_ignored-return-bool.patch
signal-make-sig_ignored-return-bool.patch
signal-make-has_pending_signals-return-bool.patch
signal-make-recalc_sigpending_tsk-return-bool.patch
signal-make-unhandled_signal-return-bool.patch
signal-make-flush_sigqueue_mask-void.patch
signal-make-wants_signal-return-bool.patch
signal-make-legacy_queue-return-bool.patch
signal-make-sigkill_pending-return-bool.patch
signal-make-get_signal-return-bool.patch
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