signal: Remove SEND_SIG_FORCED
There are no more users of SEND_SIG_FORCED so it may be safely removed.
Remove the definition of SEND_SIG_FORCED, it's use in is_si_special,
it's use in TP_STORE_SIGINFO, and it's use in __send_signal as without
any users the uses of SEND_SIG_FORCED are now unncessary.
This makes the code simpler, easier to understand and use. Users of
signal sending functions now no longer need to ask themselves do I
need to use SEND_SIG_FORCED.
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
diff --git a/kernel/signal.c b/kernel/signal.c
index d7d1adf..ec136fd 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -736,7 +736,7 @@ static void flush_sigqueue_mask(sigset_t *mask, struct sigpending *s)
static inline int is_si_special(const struct siginfo *info)
{
- return info <= SEND_SIG_FORCED;
+ return info <= SEND_SIG_PRIV;
}
static inline bool si_fromuser(const struct siginfo *info)
@@ -1039,7 +1039,7 @@ static int __send_signal(int sig, struct siginfo *info, struct task_struct *t,
result = TRACE_SIGNAL_IGNORED;
if (!prepare_signal(sig, t,
- from_ancestor_ns || (info == SEND_SIG_PRIV) || (info == SEND_SIG_FORCED)))
+ from_ancestor_ns || (info == SEND_SIG_PRIV)))
goto ret;
pending = (type != PIDTYPE_PID) ? &t->signal->shared_pending : &t->pending;
@@ -1057,8 +1057,7 @@ static int __send_signal(int sig, struct siginfo *info, struct task_struct *t,
* Skip useless siginfo allocation for SIGKILL SIGSTOP,
* and kernel threads.
*/
- if ((info == SEND_SIG_FORCED) ||
- sig_kernel_only(sig) || (t->flags & PF_KTHREAD))
+ if (sig_kernel_only(sig) || (t->flags & PF_KTHREAD))
goto out_set;
/*
