i compiled my kernel (2.2.14) with the /dev/pty filesystem for unix98
PTYs, but when i telnet or ssh to the machine , i'm logged in via ttypx
... did i missed something ?
On Mon, 10 Apr 2000, eric pareja wrote:
> On Sun, 9 Apr 2000, Michael Vincent K. Pozon - CompE wrote:
>
> > with kernel 2.2.5-15 , when i do a terminal login (telnet/ssh) i'm
> > logged in via pts/x ( i.e. pts/0)
> > but with kernel 2.2.14 i'm logged in via ttypx (i.e. ttyp1)
> >
> > i'm just wondering what's the significance or difference for both ttypx
> > and pts/x .... security issue ?
>
> actually, it's an option you choose in kernel configuration under Unix98
> PTY support. from the blurb:
>
> Linux has traditionally used the BSD-like names /dev/ptyxx for masters and
> /dev/ttyxx for slaves of pseudo terminals. This scheme -- has a number of
> problems. The GNU C library glibc 2.1 and later, however, supports the
> Unix98 naming standard: in order to acquire a pseudo terminal, a process
> opens /dev/ptmx; the number of the pseudo terminal is then made available
> to the process and the pseudo terminal slave can be accessed as
> /dev/pts/<number>. What was traditionally /dev/ttyp2 will then be
> /dev/pts/2, for example.
>
> The entries in /dev/pts/ are created on the fly by a virtual filesystem;
> therefore, if you say Y here you should say Y to "/dev/pts filesystem for
> Unix98 PTYs" as well.
>
> --
> eric pareja ([EMAIL PROTECTED]) | check out http://www.Gra.PH
> home with a bunch of machines to form a cluster (well, almost)
> "Knowledge is inherently precious even if you can't sell it."
> - Dr. Greta Penninger in Bruce Sterling's "Distraction"
>
>
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