reboot(3B)

reboot system or halt processor

From the original Amiga UNIX 2.1 manual. Some things it mentions may not be in this release.

Also by this name: reboot(1B), BSD versions of commands

NAME

reboot - reboot system or halt processor

SYNOPSIS

cc [ flag... ] file ... -lucb
#include <sys/reboot.h>
reboot(howto, [ bootargs ] )
int howto;
char *bootargs;

DESCRIPTION

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 (for instance RB_AUTOBOOT) is given, the system is rebooted from file /stand/unix. An automatic consistency check of the disks is then normally performed. The bits of howto that are used 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 /stand/unix without asking.

RETURN VALUE

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

ERRORS

EPERM          The caller is not the super-user.

FILES

/vmunix

NOTES

Any other howto argument causes /stand/unix to boot. Only the super-user may reboot a machine.