xterm: no available ptys

Hello,

I have created a trimmed down /dev directory to be used with my custom bootable Linux CD. I've run into a problem where I can't start an xterm. I get the error...

xterm: no available ptys

I'm not sure which device I'm missing in /dev. I'm no expert on how the tty's and stuff work so feel free to fill me in. Everything else seems to work fine on the CD.

Here is what my /dev directory looks like now:

/dev:
console
cua0
cua1
cua2
cua3
fb
fb0
fb1
fb2
fb3
fb4
fb5
fb6
fb7
fd0
fd1
hda
hdb
hdc
hdd
kmem
listing
mem
mouse
null
psaux
pts
|...0
ram
ram0
ram1
ram2
ram3
ramdisk
scd0
scd1
scd2
scd3
scd4
scd5
scd6
scd7
tty
tty0
tty1
tty2
ttyp0
ttyp1
ttyp2
ttyp3
ttyp4
urandom
zero

Am I missing something?

Any help appreciated!

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(ben@qwerty)-(12:52pm Mon Nov 6)-(/dev)

$ ls ptys*
ptys0  ptys2  ptys4  ptys6  ptys8  ptysa  ptysc  ptyse
ptys1  ptys3  ptys5  ptys7  ptys9  ptysb  ptysd  ptysf

-b

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Did you mount /dev/pts, which is usually done with a line in /etc/fstab:

none /dev/pts devpts gid=5,mode=0622 0 0

Michael Meissner, Red Hat, Inc.
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Followup to:  <[email protected]>
By author:    Michael Meissner <[email protected]>
In newsgroup: linux.dev.kernel

That should be gid=5,mode=0620 unless you *REALLY*, *REALLY* know what you're doing!!!! Arguably, that should actually be mode=0600, with user tty's then being required to chmod to 0620 if they want "mesg y" by default.

(gid 5 being the gid for group "tty".)

-hpa

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I'm missing ptmx. You NEED a writable /dev/pts dir.

Igmar

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Followup to:  <[email protected]>
By author:    Igmar Palsenberg <[email protected]>
In newsgroup: linux.dev.kernel

Actually, what you need is the devpts filesystem mounted onto /dev/pts.

-hpa

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Agree. I had a shitload of probs when 2.2.0 came out and I switched.. Was due that /dev was readonly here. Bit strange if I think of it.

Igmar

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If you don't have devpts mounted, glibc tries to use a setuid program to hack around /dev for you. I'd rather wish it didn't, actually.

-hpa

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"Unix gives you enough rope to shoot yourself in the foot."
http://www.zytor.com/~hpa/puzzle.txt
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