boot(9) [freebsd man page]

BOOT(9) 						   BSD Kernel Developer's Manual						   BOOT(9)

NAME

     boot -- halt or reboot the system

SYNOPSIS

     #include <sys/types.h>
     #include <sys/systm.h>
     #include <sys/reboot.h>

     void
     boot(int howto);

DESCRIPTION

     The boot() function handles final system shutdown, and either halts or reboots the system.  The exact action to be taken is determined by the
     flags passed in howto and by whether or not the system has finished autoconfiguration.

     If the system has finished autoconfiguration, boot() does the following:

	   1.	If this is the first invocation of boot() and the RB_NOSYNC flag is not set in howto, syncs and unmounts the system disks by call-
		ing vfs_unmountall(9).

	   2.	Disables interrupts.

	   3.	If rebooting after a crash (i.e., if RB_DUMP is set in howto, but RB_HALT is not), saves a system crash dump.

	   4.	Runs any shutdown hooks previously registered.

	   5.	Prints a message indicating that the system is about to be halted or rebooted.

	   6.	If RB_HALT is set in howto, halts the system.  Otherwise, reboots the system.

     If the system has not finished autoconfiguration, boot() runs any shutdown hooks previously registered, prints a message, and halts the sys-
     tem.

SEE ALSO

     vfs_unmountall(9)

BSD
								 February 14, 1997							       BSD

reboot(3C)																reboot(3C)

NAME

       reboot - reboot system or halt processor

SYNOPSIS

       #include <sys/reboot.h>

       int reboot(int howto, char *bootargs);

       The  reboot()  function	reboots  the  system.	The howto argument specifies the behavior of the system while rebooting and is a mask con-
       structed by a bitwise-inclusive-OR of flags from the following list:

       RB_AUTOBOOT     The machine is rebooted from the root filesystem on the default boot device. This is the default behavior. See boot(1M) and
		       kernel(1M).

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

       RB_ASKNAME      Interpreted by the bootstrap program and kernel, causing the user to be asked for pathnames during the bootstrap.

       RB_DUMP	       The  system  is	forced	to panic immediately without any further processing and a crash dump is written to the dump device
		       (see dumpadm(1M)) before rebooting.

       Any other howto argument causes the kernel file to boot.

       The interpretation of the bootargs argument is platform-dependent.

       Upon successful completion, reboot() never returns.  Otherwise, -1 is returned and errno is set to indicate the error.

       The reboot() function will fail if:

       EPERM	The {PRIV_SYS_CONFIG} privilege is not asserted in the effective set of the calling process.

       intro(1M), boot(1M), dumpadm(1M), halt(1M), init(1M), kernel(1M), reboot(1M), uadmin(2)

								    22 Mar 2004 							reboot(3C)