REBOOT(2)               COMMAND REFERENCE               REBOOT(2)



NAME
     reboot - reboot system or halt processor

SYNOPSIS
     #include <sys/reboot.h>

     reboot(howto)
     int howto;

DESCRIPTION
     N.B.:  Reboot is not implemented with the first release of
     the system.  Its interface, as documented here, is likely to
     change when it becomes available.

     Reboot reboots the system, and is invoked automatically in
     the event of unrecoverable system failures.  Howto is a mask
     of options passed to the bootstrap program.  The system call
     interface permits only RB_HALT or RB_AUTOBOOT to be passed
     to the reboot program; the other flags are used in scripts
     stored on the console storage media, or used in manual
     bootstrap procedures.  When none of these options (e.g.
     RB_AUTOBOOT) is given, the system is rebooted from file
     "vmunix" in the root file system of unit 0 of a disk chosen
     in a processor-specific way.  An automatic consistency check
     of the disks is then normally performed.

     The bits of howto, defined in <sys/reboot.h>, are:

     RB_HALT
          the processor is simply halted; no reboot takes place.
          RB_HALT should be used with caution.

     RB_ASKNAME
          Interpreted by the bootstrap program itself, causing it
          to inquire as to what file should be booted.  Normally,
          the system is booted from the file "xx(0,0)vmunix"
          without asking.

     RB_SINGLE
          Normally, the reboot procedure involves an automatic
          disk consistency check and then multi-user operations.
          RB_SINGLE prevents the consistency check, rather simply
          booting the system with a single-user shell on the
          console.  RB_SINGLE is interpreted by the init(8)
          program in the newly booted system.  This switch is not
          available from the system call interface.

     Only the superuser may reboot a machine.

DIAGNOSTICS
     [EPERM]
         The caller is not the superuser.



Printed 10/17/86                                                1

REBOOT(2)               COMMAND REFERENCE               REBOOT(2)



RETURN VALUE
     If successful, this call never returns.  Otherwise, a -1 is
     returned and an error is returned in the global variable
     errno.

SEE ALSO
     crash(8), halt(8), init(8), reboot(8).
















































Printed 10/17/86                                                2

%%index%%
na:72,76;
sy:148,387;
de:535,1983;
di:2518,133;
rv:2795,229;
se:3024,186;
%%index%%000000000107