09-06-2005
The fact that it logs you out and asks for a login prompt instead of changing runlevels, plus the fact that it isn't giving any error messages or locking up makes me think somebody did this on purpose. If the init file was corrupted I would expect worse behavior than just logging you out.
Check root's login scripts and see if anybody aliased init 0 and init 6 to logout or something similar. Maybe this was done as a way to prevent mistakes, similar to how some people alias rm to rm -i . . . .
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LEARN ABOUT MINIX
sulogin
sulogin(1M) System Administration Commands sulogin(1M)
NAME
sulogin - access single-user mode
SYNOPSIS
sulogin
DESCRIPTION
The sulogin utility is automatically invoked by init when the system is first started. It prompts the user to type the root password to
enter system maintenance mode (single-user mode) or to type EOF (typically <CTRL-D>) for normal startup (multi-user mode). The user should
never directly invoke sulogin.
The sulogin utility can prompt the user to enter the root password on a variable number of serial console devices, in addition to the tra-
ditional console device. See consadm(1M) and msglog(7D) for a description of how to configure a serial device to display the single-user
login prompt.
FILES
/etc/default/sulogin Default value can be set for the following flag:
PASSREQ Determines if login requires a password. Default is PASSREQ=YES.
/etc/default/login Default value can be set for the following flag:
SLEEPTIME If present, sets the number of seconds to wait before login failure is printed to the screen and
another login attempt is allowed. Default is 4 seconds. Minimum is 0 seconds. Maximum is 5 seconds.
Both su(1M) and login(1) are affected by the value of SLEEPTIME.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcsr |
+-----------------------------+-----------------------------+
SEE ALSO
login(1), consadm(1M), init(1M), su(1M), attributes(5), msglog(7D)
SunOS 5.10 25 Sep 2002 sulogin(1M)