Bug 56353 - zsh doesn't work over serial port.
Summary: zsh doesn't work over serial port.
Keywords:
Status: CLOSED NOTABUG
Alias: None
Product: Red Hat Linux
Classification: Retired
Component: zsh
Version: 7.3
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Trond Eivind Glomsrxd
QA Contact: Aaron Brown
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2001-11-16 01:02 UTC by hjl
Modified: 2017-05-17 11:53 UTC (History)
2 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2017-05-17 11:53:12 UTC
Embargoed:

Attachments (Terms of Use)
A patch (2.07 KB, patch)
2001-11-16 01:02 UTC, hjl 		no flags Details | Diff
A patch to support serial port. (1.76 KB, patch)
2002-05-20 23:00 UTC, hjl 		no flags Details | Diff
View All

Description hjl 2001-11-16 01:02:17 UTC 
I can't log in from a serial port under kernel 2.4.9-12. It used
to work fine. zsh blocks at

open("/dev/ttyS0", O_RDWR|O_NOCTTY)
Comment 1 hjl 2001-11-16 01:02:46 UTC 
Created attachment 37703 [details]
A patch
Comment 2 Trond Eivind Glomsrxd 2001-11-16 16:26:43 UTC 
Can you see if using zsh as shipped with Red Hat Linux 7.2 helps?
Comment 3 hjl 2001-11-16 16:31:19 UTC 
I did try zsh from RedHat 7.2. It has the same problem.
Comment 4 Trond Eivind Glomsrxd 2001-11-16 19:31:10 UTC 
The one from rawhide? (4.0.4)
Comment 5 hjl 2001-11-16 19:46:10 UTC 
The same.

# rpm -q zsh
zsh-4.0.4-1
# strace -p 20994
open("/dev/ttyS0", O_RDWR|O_NOCTTY|O_LARGEFILE
Comment 6 hjl 2002-05-20 22:59:16 UTC 
zsh in RedHat 7.3 has the same problem. I am uploading a patch.
Comment 7 hjl 2002-05-20 23:00:12 UTC 
Created attachment 58047 [details]
A patch to support serial port.
Comment 8 Trond Eivind Glomsrxd 2002-06-28 17:15:27 UTC 
Patch added to zsh-4.0.4-8
Comment 9 Kamil Dudka 2016-12-14 14:55:33 UTC 
Has this patch been ever proposed to Zsh upstream?
Comment 10 Kamil Dudka 2017-05-17 11:42:14 UTC 
According to the following thread at the upstream mailing list:

https://www.zsh.org/mla/users/2009/msg00287.html

... it was not a bug of Zsh, so the fix does not belong there.  A possible workaround is to use 'agetty -L':

https://www.zsh.org/mla/users/2009/msg00289.html

... or mgetty:

http://www.zsh.org/mla/workers/2001/msg00862.html
Comment 11 Kamil Dudka 2017-05-17 11:53:12 UTC 
patch removed in zsh-5.3.1-6.fc27 by the following downstream commit:

https://src.fedoraproject.org/cgit/rpms/zsh.git/commit/?id=16616a0f
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