uadmin - provides administrative control
int mdep );
Specifies the type of administrative action to be performed
on the system. Specifies the type of action to
perform after the system is shutdown or stopped using
A_SHUTDOWN or A_REBOOT.
The available actions are AD_HALT, AD_BOOT, or
AD_IBOOT. These are described in more detail
below. Specifies machine-dependent use. It is currently
not used and is ignored if defined.
The uadmin function enables control of some basic administrative
functions. Mostly, it is called by other system
administrative procedures which must perform automatic
shutdowns, halts, and reboots of the system. Using this
function as a general interface is not recommended.
To perform a shutdown, halt, or reboot of the system, you
must use the cmd parameter which specifies the function to
be performed. The values for the cmd parameter are as follows:
Signals that the system stop immediately without any
further processing. The operation to be performed next is
specified by the fcn parameter. Specifies a remount of
the root file system after errors have been resolved.
This command should only be used during the startup process.
For this release, this command is unsupported. See
the RESTRICTIONS section for more information. Specifies
a systematic shutdown of the system by terminating all
user processes, flushing the buffer cache, and unmounting
the root file system. The operation to be performed next
must be specified by the fcn parameter.
The fcn parameter specifies the operation that is to be
performed after the system has been shutdown or rebooted
using the A_SHUTDOWN or A_REBOOT commands. The fcn parameter
has the following values: Halts the processor. The
machine is then in a state where power can be turned off.
Reboots the system in standalone mode using the default
kernel. Reboots the system in interactive mode. You must
provide the kernel name upon a reboot of the machine.
Specifying A_REMOUNT is not supported for this release.
If it is specified, a value of -1 is returned and errno is
set to ENOSYS.
On success, specifying either A_SHUTDOWN or A_REBOOT does
not return a value. Specifying A_REMOUNT returns zero (0)
On error, a value of -1 is returned and errno is set to
Indicates that a command was specified that is invalid.
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