bin/150262: [patch] truss(1) -f doesn't follow descendants of the linux process

[Kostik Belousov]

On Tue, Feb 15, 2011 at 12:11:37AM +0000, arundel at freebsd.org wrote:
> Synopsis: [patch] truss(1) -f doesn't follow descendants of the linux process
> 
> Responsible-Changed-From-To: freebsd-bugs->freebsd-emulation
> Responsible-Changed-By: arundel
> Responsible-Changed-When: Tue Feb 15 00:10:50 UTC 2011
> Responsible-Changed-Why: 
> Assign to people who might have an opinion about this PR.
> 
> http://www.freebsd.org/cgi/query-pr.cgi?pr=150262
The patch would improve the current operations of truss(1), but the
handling of new process creation in truss is very racy. We should
teach it to use PT_FOLLOW_FORK and ptrace_lwpinfo.pl_child_pid.
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