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Konstantin Belousov
151a8512bd
The new ptrace(2) features allow to change truss(1) to systematically operate on the process descriptors instead of pids. Allocate the global kqueue that tracks all noted children by pdopenpid()-ing them and adding to the kqueue with EVFILT_PROCDESC/NOTE_PDSIGCHLD. The activated knote triggers the pdwait() call to return the child tracing info. This replaces the waitid(P_ALL) call in the non-capsicumized truss(1) eventloop. Reviewed by: markj Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D58094