Sergey Bugaev b3a24d732d Kernel+LibC: Add sys$waitid(), and make sys$waitpid() wrap it ...

sys$waitid() takes an explicit description of whether it's waiting for a single
process with the given PID, all of the children, a group, etc., and returns its
info as a siginfo_t.

It also doesn't automatically imply WEXITED, which clears up the confusion in
the kernel.

2020-02-05 18:14:37 +01:00

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