reboot(2)                                               reboot(2)



NAME
     reboot - reboot system or halt processor

SYNOPSIS
     #include <sys/reboot.h>

     int reboot(howto)
     int howto;

DESCRIPTION
     reboot halts and restarts the processor and reloads the
     operating system from the disk file ``unix'' on the root
     file system of the default boot device.  By default, in-core
     data for mounted file systems are flushed, as in sync(2).
     Only the superuser may reboot a machine.

     howto is a mask of options passed to the operating system.
     One of the following bits must be set in howto:

     RB_AUTOBOOT
          Restart the processor and reload the operating system.

     RB_HALT
          Halt the processor.  No reboot takes place.

     RB_BUSYLOOP
          Hang the processor an infinite loop.

     The following optional behavior may be requested by setting
     these bits
     in howto:

     RB_NOSYNC
          Do not flush the system buffers to disk.

     RB_KILLALL
          Terminate all running processes before halting the
          system.

     RB_UNMOUNT
          Unmount all mounted file systems before halting the
          system.

STATUS MESSAGES AND VALUES
     If successful, this call never returns.  Otherwise, a -1 is
     returned and an error is returned in the global variable
     errno.

     The following error condition could occur:

     EPERM
          The caller is not the superuser.



January 1992                                                    1

reboot(2)                                               reboot(2)



SEE ALSO
     sync(2)

     reboot(1M), shutdown(1M) in A/UX System Administrator's
     Reference


















































2                                                    January 1992