Messages in this thread | | | Date | Wed, 10 Nov 1999 11:34:10 -0800 (PST) | From | Linus Torvalds <> | Subject | Re: vfork |
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On Wed, 10 Nov 1999, Alan Cox wrote: < > > Sounds like the correct fix is not vfork()-related at all, but rather a > > flag to clone() to set "trace child process", so that the new child starts > > out stopped and traced. And some way for strace to get at the child pid. > > Its such a brilliant idea that we already had it... > > if (!(clone_flags & CLONE_PTRACE)) > new_flags &= ~(PF_PTRACED|PF_TRACESYS); > > That was added for the threaded-gdb folks a while back 8)
It doesn't notify the right parent, though.
It also requires the tracer to turn a fork()/vfork() into a clone(), but I guess that's ok. The lack of re-parenting looks like a killer, though.
Linus
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