Adding Al again, someone dropped him from the CC list... On Tue, Jul 23, 2013 at 7:40 AM, Richard Weinberger <rich...@nod.at> wrote: > Lennart, > > Am 23.07.2013 00:32, schrieb Lennart Poettering: >> On Mon, 22.07.13 16:13, Ramkumar Ramachandra (artag...@gmail.com) wrote: >> >>> >>> [Corrected Lennart's email ID] >>> >>> Richard Weinberger wrote: >>>> CC'ing Lennart. >>>> >>>> Am 22.07.2013 11:45, schrieb Ramkumar Ramachandra: >>>>> Ramkumar Ramachandra wrote: >>>>>> [1]: >>>>>> http://lists.freedesktop.org/archives/systemd-devel/2013-July/012152.html >>>>> >>>>> ... and the patches were rejected. Lennart says that UML providing >>>>> /dev/tty* is wrong, and that UML should call them /dev/hvc* (or >>>>> something). Can we do something about the situation? Can we remove >>>>> /dev/tty*, and provide /dev/hvc*? Will we be breaking existing users? >>>>> >>>>> Thanks. >>>>> >>>>> Lennart Poettering wrote: >>>>>> UML shouldn't be penalized for not implementing some terminal emulation, >>>>>> but it should be penalized for doing so under the label of "VT support", >>>>>> which it simply is not providing. >>>>>> >>>>>> They can call their ttys any way they want. If the call them >>>>>> /dev/tty[1..64] however, then they need to implement the VC >>>>>> interfaces. All of them. >>>> >>>> Lennart, can you please explain us why /dev/tty[1..64] is forced to >>>> have virtual console support? >> >> /dev/tty[1..64] is the userspace API to the kernel VT subsystem. If you >> support it you need to match up all /dev/tty[1..64] with a >> /dev/vcs[1..64] + /dev/vcsa[1..64]. You need to expose a tty that >> understands TERM=linux and the ioctls listed on console_ioctl(4). You >> need /dev/tty0 as something that behaves like a symlink to the fg >> VT. You should also support files like /sys/class/tty/tty0/active with >> its POLLHUP iface. > > I sightly disagree with you. > /dev/tty[1..64] is not directly bound to VT. > You can have systems with CONFIG_VT=n and still have /dev/tty[1..64]. > Linux supports this perfectly. > UML does not have VT because having virtual consoles makes no sense. > (Same like on s390) > > Thanks, > //richard > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majord...@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/
-- Thanks, //richard -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
