dongjiuzhu1 9244b5a737 signal: Support sigaction:sa_user, siginfo_t:si_user with user info
When the signal sent by the sender is blocked in the target task,
if the target task has an action registered with sa_flags SA_KENELHAND,
it will directly respond to the action in the context of the sender.
When the action is executed, it will have the parameters set by the
target task with sigaction:sa_user.

Signed-off-by: dongjiuzhu1 <dongjiuzhu1@xiaomi.com>
2022-12-28 23:05:58 +08:00
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