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document the "security" command

This commit is contained in:
drochner 2005-04-12 11:41:14 +00:00
parent 48eac6e41a
commit e69243d0ea
1 changed files with 27 additions and 2 deletions
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29
sbin/atactl/atactl.8
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@ -1,4 +1,4 @@
.\" $NetBSD: atactl.8,v 1.19 2004/10/10 09:45:10 wiz Exp $ .\" $NetBSD: atactl.8,v 1.20 2005/04/12 11:41:14 drochner Exp $
.\" .\"
.\" Copyright (c) 1998 The NetBSD Foundation, Inc. .\" Copyright (c) 1998 The NetBSD Foundation, Inc.
.\" All rights reserved. .\" All rights reserved.
@ -34,7 +34,7 @@
.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE .\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
.\" POSSIBILITY OF SUCH DAMAGE. .\" POSSIBILITY OF SUCH DAMAGE.
.\" .\"
.Dd October 10, 2004 .Dd April 12, 2005
.Dt ATACTL 8 .Dt ATACTL 8
.Os .Os
.Sh NAME .Sh NAME
@ -174,6 +174,31 @@ Prints the error log.
.Ar selftest-log .Ar selftest-log
.Pp .Pp
Prints the self-test log. Prints the self-test log.
.Pp
.Cm security
.Ar [freeze | status]
.Pp
Controls
.Dq security
(password protection) features of modern ATA drives.
The security commands are intended to be issued by low-level
software (firmware / BIOS) only.
Generally, the security status should be
.Dq frozen
before the operating system is started so that misbehaving or malicious
software cannot set or change a password.
Older and buggy BIOSes neglect to do so; in these cases it might make
sense to issue the
.Dq freeze
command early in the boot process.
.Pp
.Ar freeze
.Pp
freezes the drive's security status
.Pp
.Ar status
.Pp
displays the drive's security status
.Sh BUS COMMANDS .Sh BUS COMMANDS
The following commands may be used on IDE and ATA busses. The following commands may be used on IDE and ATA busses.
Note that not all devices support all commands. Note that not all devices support all commands.