Date: Wed, 19 Jun 1996 11:54:13 -0400 From: Garrett Wollman <wollman@lcs.mit.edu> To: James Raynard <fcurrent@jraynard.demon.co.uk> Cc: freebsd-current@FreeBSD.ORG Subject: Re: ktrace [Was: 2.2-960612-SNAP resolver problems] Message-ID: <9606191554.AA19234@halloran-eldar.lcs.mit.edu> In-Reply-To: <199606181341.NAA00521@jraynard.demon.co.uk> References: <9606171557.AA01047@halloran-eldar.lcs.mit.edu> <199606181341.NAA00521@jraynard.demon.co.uk>
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<<On Tue, 18 Jun 1996 13:41:52 GMT, James Raynard <fcurrent@jraynard.demon.co.uk> said: > I don't follow. If the ktrace() system call took a file descriptor > allocated by the ktrace program as its first argument, and used that > to find the vnode to write the trace information to, how would that > involve disturbing the file descriptor table of the process being > debugged? (Except perhaps for pathological cases like trying to get a > running ktrace process to debug itself). The original poster suggested sending it to standard output, which is (generally speaking) not a useful place for binary trace data to go because whatever is interpreting the real output of the program can't deal with it. -GAWollman -- Garrett A. Wollman | Shashish is simple, it's discreet, it's brief. ... wollman@lcs.mit.edu | Shashish is the bonding of hearts in spite of distance. Opinions not those of| It is a bond more powerful than absence. We like people MIT, LCS, ANA, or NSA| who like Shashish. - Claude McKenzie + Florent Vollant
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