I'm under the impression that dtrace is read-only, for security reasons.
On Sat, Jul 11, 2009 at 4:50 PM, Rafael Cunha de Almeida<almeida...@gmail.com> wrote: > Hello, > > I have been studying ptrace(2) on the Unix systems (I have studied it on > Debian and OpenBSD so far). On all the systems I have tried there is a > request flag that allows for a given process to attach itself to some > other running process (given that other process is not setuid and has > the same uid as the attacher). Opensolaris' manual pages doesn't say > anything about such a request. > > Opensolaris' ptrace(3C) manual page says that ptrace isn't even a system > call in solaris. It is build using some /proc interface. Further > investigation showed me that gdb is able to attach itself to a running > process (actually, two gdbs are able to attach itself to the same > process, something that's impossible on Linux and OpenBSD). Where can I > read up on that /proc interface? So, it allows for more than one process > attach to a single process? > > On a related topic, is it possible to change the behaviour of programs > using dtrace (like you can with ptrace) or is it read-only? Does it use > those /proc features as well? > _______________________________________________ > opensolaris-discuss mailing list > opensolaris-discuss@opensolaris.org > _______________________________________________ opensolaris-discuss mailing list opensolaris-discuss@opensolaris.org
