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.\" $OpenBSD: rdsetroot.8,v 1.4 2023/04/24 14:06:01 krw Exp $
.\"
.\" Copyright (c) 2019 Theo de Raadt
.\"
.\" Permission to use, copy, modify, and distribute this software for any
.\" purpose with or without fee is hereby granted, provided that the above
.\" copyright notice and this permission notice appear in all copies.
.\"
.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
.\"
.Dd $Mdocdate: April 24 2023 $
.Dt RDSETROOT 8
.Os
.Sh NAME
.Nm rdsetroot
.Nd insert disk image into RAMDISK kernel
.Sh SYNOPSIS
.Nm rdsetroot
.Fl s
.Ar kernel
.Nm rdsetroot
.Op Fl dx
.Ar kernel
.Op Ar disk.fs
.Sh DESCRIPTION
The
.Nm
utility inserts the file
.Ar disk.fs
into the reserved space inside a RAMDISK kernel.
If
.Ar disk.fs
is not specified,
.Nm
reads from standard input.
.Pp
The options are as follows:
.Bl -tag -width Ds
.It Fl d
Debug.
.It Fl s
Print the size in bytes of the reserved space in the RAMDISK kernel.
No insertion or extraction is attempted.
.It Fl x
Rather than inserting, extract the
.Ar disk.fs
image.
If
.Ar disk.fs
is not specified,
.Nm
writes to standard output.
The disk can be made accessible using
.Xr vnconfig 8 ,
filesystems can be manipulated, and finally re-inserted into the RAMDISK kernel.
.El
.Sh SEE ALSO
.Xr config 8 ,
.Xr disklabel 8 ,
.Xr vnconfig 8
|
