Copyright (c) 1997
Mike Pritchard. All rights reserved.
Copyright (c) 1994 Christopher G. Demetriou
All rights reserved.
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This product includes software developed by Christopher G. Demetriou
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$FreeBSD: releng/10.2/share/man/man9/boot.9 131530 2004-07-03 18:29:24Z ru $
.Dd February 14, 1997 .Dt BOOT 9 .Os .Sh NAME .Nm boot .Nd halt or reboot the system .Sh SYNOPSIS n sys/types.h n sys/systm.h n sys/reboot.h .Ft void .Fn boot "int howto" .Sh DESCRIPTION The .Fn 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 .Fa howto and by whether or not the system has finished autoconfiguration.
p If the system has finished autoconfiguration, .Fn boot does the following: l -enum -offset indent t If this is the first invocation of .Fn boot and the .Dv RB_NOSYNC flag is not set in .Fa howto , syncs and unmounts the system disks by calling .Xr vfs_unmountall 9 . t Disables interrupts. t If rebooting after a crash (i.e., if .Dv RB_DUMP is set in .Fa howto , but .Dv RB_HALT is not), saves a system crash dump. t Runs any shutdown hooks previously registered. t Prints a message indicating that the system is about to be halted or rebooted. t If .Dv RB_HALT is set in .Fa howto , halts the system. Otherwise, reboots the system. .El
p If the system has not finished autoconfiguration, .Fn boot runs any shutdown hooks previously registered, prints a message, and halts the system. .Sh SEE ALSO .Xr vfs_unmountall 9