zsh on console

zsh on console

[Kjeld Borch Egevang]

When I run zsh on the console (serial interface) the process hangs. I can 
login with /bin/bash, but when I start /bin/zsh it waits forever. I can 
interrupt the process and regain control.

It's only related to the console. If I login with telnet it works just 
fine.

Any idea, what could be wrong?


/Kjeld

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Re: zsh on console

[Ralf Baechle]

On Mon, May 06, 2002 at 02:44:33PM +0200, Kjeld Borch Egevang wrote:

> When I run zsh on the console (serial interface) the process hangs. I can 
> login with /bin/bash, but when I start /bin/zsh it waits forever. I can 
> interrupt the process and regain control.
> 
> It's only related to the console. If I login with telnet it works just 
> fine.
> 
> Any idea, what could be wrong?

I recently fixed a simliar bug in the sb1250_duart.c driver.  Basically
a hangup of the tty did result in the close routine getting called thus
the driver's usage counter for ttyS0 eventually dropping to zero though
it was still open ...

  Ralf

Re: zsh on console

[Kevin D. Kissell]

> When I run zsh on the console (serial interface) the process hangs. I can 
> login with /bin/bash, but when I start /bin/zsh it waits forever. I can 
> interrupt the process and regain control.
> 
> It's only related to the console. If I login with telnet it works just 
> fine.
> 
> Any idea, what could be wrong?

I don't know what it would be specifically, but having
dealt with similar problems on other Unix systems,
it's proably the case that zsh uses a particular tty
mode that isn't correctly supported by the serial
console driver, either due to a bug in the driver or
due to a conflict with some other feature enabled
on the console port.  The next step to take would
be to run "stty -all" under /bin/bash and under
/bin/zsh on a telnet session, and compare the 
outputs.

Re: zsh on console

[H . J . Lu]

On Mon, May 06, 2002 at 02:57:28PM +0200, Kevin D. Kissell wrote:
> > When I run zsh on the console (serial interface) the process hangs. I can 
> > login with /bin/bash, but when I start /bin/zsh it waits forever. I can 
> > interrupt the process and regain control.
> > 
> > It's only related to the console. If I login with telnet it works just 
> > fine.
> > 
> > Any idea, what could be wrong?
> 
> I don't know what it would be specifically, but having
> dealt with similar problems on other Unix systems,
> it's proably the case that zsh uses a particular tty
> mode that isn't correctly supported by the serial
> console driver, either due to a bug in the driver or
> due to a conflict with some other feature enabled
> on the console port.  The next step to take would
> be to run "stty -all" under /bin/bash and under
> /bin/zsh on a telnet session, and compare the 
> outputs.

That sounds like a zsh bug I fixed. Please try zsh 3.0.8-8.1 in my RedHat 7.1
port and let me know if it doesn't work for you.



H.J.

Re: zsh on console

[Hartvig Ekner]

H . J . Lu writes:
> 
> On Mon, May 06, 2002 at 02:57:28PM +0200, Kevin D. Kissell wrote:
> > > When I run zsh on the console (serial interface) the process hangs. I can 
> > > login with /bin/bash, but when I start /bin/zsh it waits forever. I can 
> > > interrupt the process and regain control.
> > > 
> > > It's only related to the console. If I login with telnet it works just 
> > > fine.
> > > 
> > > Any idea, what could be wrong?
> > 
> > I don't know what it would be specifically, but having
> > dealt with similar problems on other Unix systems,
> > it's proably the case that zsh uses a particular tty
> > mode that isn't correctly supported by the serial
> > console driver, either due to a bug in the driver or
> > due to a conflict with some other feature enabled
> > on the console port.  The next step to take would
> > be to run "stty -all" under /bin/bash and under
> > /bin/zsh on a telnet session, and compare the 
> > outputs.
> 
> That sounds like a zsh bug I fixed. Please try zsh 3.0.8-8.1 in my RedHat 7.1
> port and let me know if it doesn't work for you.

You only have the source RPM on OSS?
I believe we compiled from another SRC RPM: zsh-4.0.4-5.src.rpm. 

What was your fix? 

/Hartvig

Re: zsh on console

[Hartvig Ekner]

H . J . Lu writes:
> 
> On Mon, May 06, 2002 at 02:57:28PM +0200, Kevin D. Kissell wrote:
> > > When I run zsh on the console (serial interface) the process hangs. I can 
> > > login with /bin/bash, but when I start /bin/zsh it waits forever. I can 
> > > interrupt the process and regain control.
> > > 
> > > It's only related to the console. If I login with telnet it works just 
> > > fine.
> > > 
> > > Any idea, what could be wrong?
> > 
> > I don't know what it would be specifically, but having
> > dealt with similar problems on other Unix systems,
> > it's proably the case that zsh uses a particular tty
> > mode that isn't correctly supported by the serial
> > console driver, either due to a bug in the driver or
> > due to a conflict with some other feature enabled
> > on the console port.  The next step to take would
> > be to run "stty -all" under /bin/bash and under
> > /bin/zsh on a telnet session, and compare the 
> > outputs.
> 
> That sounds like a zsh bug I fixed. Please try zsh 3.0.8-8.1 in my RedHat 7.1
> port and let me know if it doesn't work for you.

You only have the source RPM on OSS?
I believe we compiled from another SRC RPM: zsh-4.0.4-5.src.rpm. 

What was your fix? 

/Hartvig

Re: zsh on console

[H . J . Lu]

On Tue, May 07, 2002 at 12:06:42AM +0200, Hartvig Ekner wrote:
> H . J . Lu writes:
> > 
> > On Mon, May 06, 2002 at 02:57:28PM +0200, Kevin D. Kissell wrote:
> > > > When I run zsh on the console (serial interface) the process hangs. I can 
> > > > login with /bin/bash, but when I start /bin/zsh it waits forever. I can 
> > > > interrupt the process and regain control.
> > > > 
> > > > It's only related to the console. If I login with telnet it works just 
> > > > fine.
> > > > 
> > > > Any idea, what could be wrong?
> > > 
> > > I don't know what it would be specifically, but having
> > > dealt with similar problems on other Unix systems,
> > > it's proably the case that zsh uses a particular tty
> > > mode that isn't correctly supported by the serial
> > > console driver, either due to a bug in the driver or
> > > due to a conflict with some other feature enabled
> > > on the console port.  The next step to take would
> > > be to run "stty -all" under /bin/bash and under
> > > /bin/zsh on a telnet session, and compare the 
> > > outputs.
> > 
> > That sounds like a zsh bug I fixed. Please try zsh 3.0.8-8.1 in my RedHat 7.1
> > port and let me know if it doesn't work for you.
> 
> You only have the source RPM on OSS?

I didn't add cross compile support for zsh. You have to compile it natively.

> I believe we compiled from another SRC RPM: zsh-4.0.4-5.src.rpm. 

zsh-4.0.4-5 will be in my RedHat 7.3 port.

> 
> What was your fix? 
> 

zsh-3.0.8-open.patch is in baseline.tar.bz2.


H.J.