pty problem

Manfred Lotz manfred.lotz at arcor.de
Sat Nov 5 04:35:38 PST 2005


On Sat, 5 Nov 2005 12:57:35 +0100
Peter Holm <peter at holm.cc> wrote:

> On Sat, Nov 05, 2005 at 11:56:51AM +0100, Manfred Lotz wrote:
> > Using FreeBSD 6.0 I get a pty problem after a while 
> > E.g., rlwrap
> > rlwrap: warning: Could not get controlling terminal for rlwrap:
> > Device not configured rlwrap: error: read error on master pty: No
> > such file or directory
> > 
> > Of course, it happens with other programs as well. It seems to be a
> > known problem as I saw from another post.
> > 
> > Does anybody have at least a workaround?
> > 
> 
> That depends. Have you run out of ptys? Does "script xxx" fail?
> 

I guess I ran out of usable ptys because of this:

...
 28245 mc       NAMI  "/dev/ptyp0"
 28245 mc       RET   open -1 errno 5 Input/output error
 28245 mc       CALL  open(0xbfbfe220,0x2,0xbfbfe248)
 28245 mc       NAMI  "/dev/ptyp1"
 28245 mc       RET   open -1 errno 5 Input/output error
 28245 mc       CALL  open(0xbfbfe220,0x2,0xbfbfe248)
 28245 mc       NAMI  "/dev/ptyp2"
 28245 mc       RET   open -1 errno 5 Input/output error
 28245 mc       CALL  open(0xbfbfe220,0x2,0xbfbfe248)
 28245 mc       NAMI  "/dev/ptyp3"
 28245 mc       RET   open -1 errno 5 Input/output error
 28245 mc       CALL  open(0xbfbfe220,0x2,0xbfbfe248)
 28245 mc       NAMI  "/dev/ptyp4"
 28245 mc       RET   open -1 errno 5 Input/output error
 28245 mc       CALL  open(0xbfbfe220,0x2,0xbfbfe248)
 28245 mc       NAMI  "/dev/ptyp5"
 28245 mc       RET   open -1 errno 5 Input/output error
...


ls -l /dev/pty* shows:
crw-rw-rw-  1 root  wheel    0, 129 Nov  4 21:02 /dev/ptyp0
crw-rw-rw-  1 root  wheel    0, 131 Nov  5 12:08 /dev/ptyp1
crw-rw-rw-  1 root  wheel    0, 133 Nov  5 12:59 /dev/ptyp2
crw-rw-rw-  1 root  wheel    0, 135 Nov  5 11:49 /dev/ptyp3
crw-rw-rw-  1 root  wheel    0, 137 Nov  5 13:34 /dev/ptyp4
crw-rw-rw-  1 root  wheel    0, 139 Nov  5 12:54 /dev/ptyp5
crw-rw-rw-  1 root  wheel    0, 141 Nov  5 13:29 /dev/ptyp6
crw-rw-rw-  1 root  wheel    0, 143 Nov  4 21:00 /dev/ptyp7




-- 
Manfred




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