On Wed, Aug 14, 2019 at 04:19:46PM +0100, Simon McVittie wrote: > On Wed, 14 Aug 2019 at 10:26:53 -0400, Brian Reichert wrote: > Doesn't daemonize(1) make stdin, stdout and stderr point to /dev/null, > instead of closing them?
Looking at the source, yes, it does. > Expecting arbitrary subprocesses to cope gracefully with being invoked > without the three standard fds seems likely to be a losing battle. > I've implemented this myself, in dbus; it isn't a whole lot of code, > but it also isn't something that I would expect the authors of all CLI > tools to get right. I concede that reopening FD 0,1,2 is a good practice to insulate against the issues you cite. I agree with your points; I code aggressively, and sometimes forget others don't. > smcv > > [1] I'm sure there are lots of other executables named daemon or daemonize > in other OSs, and perhaps some of them get this wrong? > _______________________________________________ > systemd-devel mailing list > systemd-devel@lists.freedesktop.org > https://lists.freedesktop.org/mailman/listinfo/systemd-devel -- Brian Reichert <reich...@numachi.com> BSD admin/developer at large _______________________________________________ systemd-devel mailing list systemd-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/systemd-devel
