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Alexander Viro wrote: > > On Sun, 20 May 2001, Abramo Bagnara wrote: > > > > It may have several. Which one? > > > > Can you explain better this? > > Example: console. You want to be able to pass font changes. I'm > less than sure that putting them on the same channel as, e.g., > keyboard mapping changes is a good idea. We can do it, but I don't > see why it's natural thing to do. Moreover, you already have > /dev/vcs<n> and /dev/vcsa<n>. Can you explain what's the difference > between them (per-VC channels) and keyboard mapping (also per-VC)? > > Face it, we _already_ have more than one side band. This does not imply it's necessarily a good idea. We are comparing echo "9600" > /proc/self/fd/0/speed (or /dev/ttyS0/speed) echo "8" > /proc/self/fd/0/bits (or /dev/ttyS0/bits) with echo -e "speed 9600\nbits 8" > /proc/self/fd/0/ioctl (or /dev/ttyS0/ioctl). My personal preference goes to the latter, but it's a matter of taste (and convention choice) (echo -n "keymap " ; cat keymap) > /dev/tty1/ioctl (echo -n "font " ; cat font) > /dev/tty1/ioctl This seems ugly to you? > Moreover, we have channels that are not tied to a particular device - > they are for a group of them. Example: setting timings for IDE controller. > Sure, we can just say "open /dev/hda instead of /dev/hda5", but then we > are back to the "find related file" problem you tried to avoid. It does not seems appropriate to permit to change IDE timings using an handle to a partition... nor it seems very safe under a permissions point of view. -- Abramo Bagnara mailto:abramo@alsa-project.org Opera Unica Phone: +39.546.656023 Via Emilia Interna, 140 48014 Castel Bolognese (RA) - Italy ALSA project http://www.alsa-project.org It sounds good! - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||
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