Martin Pool wrote: > I think capabilities only apply to uid=0 processes so it's > probably not that.
True, but CUPS runs as root. If can fork a process, use libcap to drop priviledges, change to uid=lp, gid=lp and the dropped priviledges should stay dropped. I once did something a bit like this myself. > It's quite possible for a process starting as root to be uid=lp gid=lp > without joining lp's groups. In fact this is the default behaviour > unless it makes a special effort to join those groups using the > information from getent. You can probably see this by looking in > /proc/$pid/status. Good point. I'll check that out. > If ttyS0 is in fact a printer rather than a modem why don't you change > it to be group lp? ;-) Thats a very valid point. I think I got into this debugging mess when we moved from Dapper where is just worked to Hardy. So, in Hardy, how do I change the default owner and group for /dev/ttyS0? Erik -- ----------------------------------------------------------------- Erik de Castro Lopo ----------------------------------------------------------------- UNIX *is* user-friendly, just picky about who it chooses for friends! _______________________________________________ coders mailing list coders@slug.org.au http://lists.slug.org.au/listinfo/coders
