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signal: make sig_handler_ignored() return bool

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sig_handler_ignored() already behaves like a boolean function.  Let's
actually declare it as such too.

Link: http://lkml.kernel.org/r/20180602103653.18181-8-christian@brauner.io
Signed-off-by: Christian Brauner <christian@brauner.io>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: James Morris <james.morris@microsoft.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.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>
This commit is contained in:
Christian Brauner 2018-08-21 22:00:15 -07:00 committed by Linus Torvalds
parent 2a9b909409
commit e4a8b4efbf
1 changed files with 2 additions and 2 deletions
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4
kernel/signal.c
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@ -65,11 +65,11 @@ static void __user *sig_handler(struct task_struct *t, int sig)
return t->sighand->action[sig - 1].sa.sa_handler;
}
static int sig_handler_ignored(void __user *handler, int sig)
static inline bool sig_handler_ignored(void __user *handler, int sig)
{
/* Is it explicitly or implicitly ignored? */
return handler == SIG_IGN ||
(handler == SIG_DFL && sig_kernel_ignore(sig));
(handler == SIG_DFL && sig_kernel_ignore(sig));
}
static int sig_task_ignored(struct task_struct *t, int sig, bool force)