rsh with command hangs, rlogin works

[Lars Björnfot <lars at nuclear-diagnostics dot com>]

Hi all,

This is my first mail on the list...

I want to run rsh but this happens

 $ rsh localhost ls 	HANGS for any command
 $ rsh localhost 	works fine


I have set up inetd for cygrunsrv

$ cygrunsrv -I inetd -d "CYGWIN inetd" -p /usr/sbin/inetd -a "-D -d" -e
"CYGWIN=binmode tty ntsec"

  -D  to allow inetd to run under cygrunsrv
  -d  to debug output

$ cygrunsrv -V -Q inetd
Service             : inetd
Display name        : CYGWIN inetd
Current State       : Running
Controls Accepted   : Stop
Command             : /usr/sbin/inetd -D -d
stdin path          : /dev/null
stdout path         : /var/log/inetd.log
stderr path         : /var/log/inetd.log
Environment         : CYGWIN="binmode tty ntsec" 
Process Type        : Own Process
Startup             : Automatic
Account             : LocalSystem


--------------------------------------------
1. rsh with command (in.rshd) - failing case
--------------------------------------------

$ rsh localhost ls
		[Hangs]

$ tail -f inetd.log 
someone wants shell
accept, ctrl 3
+ Closing from 20
2148 execl /usr/sbin/in.rshd
2148 reaped, status 0x8b		[comes immediately after execl]


$ strace rsh localhost ls > rsh.log

When it hangs I kill the process but these are the final lines:

 5267   38986 [main] rsh 3692 __dup_ent: duping servent "cmd",
0x191A4FA8
  153   39139 [main] rsh 3692 __dup_ent: duped servent "cmd", 0x4B21E0
   68   39207 [main] rsh 3692 cygwin_getservbyname: 0x4B21E0 =
getservbyname (sh

-------------------------------------------------
2. rsh with no command (in.rlogin) - working case
-------------------------------------------------

$ rsh localhost
Last login: Tue May 23 09:57:22 from localhost
Fanfare!!!
You are successfully logged in to this server!!!


$ tail -f inetd.log 
someone wants login
accept, ctrl 3
+ Closing from 20
200 execl /usr/sbin/in.rlogind
200 reaped, status 0x100		[comes on exit from shell]



$ strace rsh localhost > rlogin.log

Same three lines as above, here it continues "normally".

 5452   12528 [main] rlogin 3636 __dup_ent: duping servent "login",
0x186B4FA8
  138   12666 [main] rlogin 3636 __dup_ent: duped servent "login",
0x4B08E0
   56   12722 [main] rlogin 3636 cygwin_getservbyname: 0x4B08E0 =
getservbyname (login, tcp)
[snip]



It seems like inetd is configured ok, permissions are ok etc.


Relevant lines from inetd.conf:

shell   stream  tcp     nowait  root    /usr/sbin/in.rshd in.rshd -L
login   stream  tcp     nowait  root    /usr/sbin/in.rlogind in.rlogind


Relevant lines from c:/WINDOWS/system32/drivers/etc/services

login             513/tcp                           #Remote Login
who               513/udp    whod
cmd               514/tcp    shell
syslog            514/udp


I have no /etc/hosts.allow or /etc/hosts.equiv but I have .rhosts

$ cat ~/.rhosts 
localhost lars
grizzly lars


I have updated all Cygwin packages to the current, but it didn't help.

"cygcheck -s" is attached.

Any help is apprecieated! I'm out of ideas...  

Lars

Attachment: cygcheck.txt
Description: Text document

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