Differential D4712 Diff 22803 head/sbin/decryptcore/decryptcore.8

Changeset View

Standalone View

head/sbin/decryptcore/decryptcore.8

Property	Old Value	New Value
svn:eol-style	null	native \ No newline at end of property
svn:keywords	null	FreeBSD=%H \ No newline at end of property
svn:mime-type	null	text/plain \ No newline at end of property

				.\" Copyright (c) 2016 Konrad Witaszczyk <def@FreeBSD.org>
				.\" All rights reserved.
				.\"
				.\" Redistribution and use in source and binary forms, with or without
				.\" modification, are permitted provided that the following conditions
				.\" are met:
				.\" 1. Redistributions of source code must retain the above copyright
				.\" notice, this list of conditions and the following disclaimer.
				.\" 2. Redistributions in binary form must reproduce the above copyright
				.\" notice, this list of conditions and the following disclaimer in the
				.\" documentation and/or other materials provided with the distribution.
				.\"
				.\" THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
				.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
				.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
				.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
				.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
				.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
				.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
				.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
				.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
				.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
				.\" SUCH DAMAGE.
				.\"
				.\" $FreeBSD$
				.\"
				.Dd December 10, 2016
				.Dt DECRYPTCORE 8
				.Os
				.Sh NAME
				.Nm decryptcore
				.Nd "decrypt a core dump of the operating system"
				.Sh SYNOPSIS
				.Nm
				.Op Fl Lv
				.Fl p Ar privatekeyfile
				.Fl k Ar keyfile
				.Fl e Ar encryptedcore
				.Fl c Ar core
				.Nm
				.Op Fl Lv
				.Op Fl d Ar crashdir
				.Fl p Ar privatekeyfile
				.Fl n Ar dumpnr
				.Sh DESCRIPTION
				The
				.Nm
				first decrypts
				.Ar keyfile
				using
				.Ar privatekeyfile
				and then uses the resulting key to decrypt
				.Ar encryptedcore
				saved by
				.Xr savecore 8 .
				Result is saved in
				.Ar core .
				.Pp
				Alternatively a user can decrypt a core dump numbered
				.Ar dumpnr
				from the
				.Ar crashdir
				directory.
				In this case a dump key from the
				.Pa key.#
				file is used and the result is saved in the
				.Pa vmcore.#
				file where
				.Dq #
				corresponds to
				.Ar dumpnr .
				.Pp
				The
				.Nm
				utility can be started with the following command line arguments:
				.Bl -tag -width ".Fl e Ar encryptedcore"
				.It Fl L
				Write log messages to
				.Xr syslogd 8 .
				.It Fl v
				Print or log verbose/debugging information.
				This option can be specified multiple times to raise the verbosity
				level.
				.It Fl p Ar privatekeyfile
				Specify location of a private key file which will be used to decrypt a dump key
				file.
				.It Fl k Ar keyfile
				Specify location of a dump key file.
				.It Fl e Ar encrytpedcore
				Specify location of an encrypted core.
				.It Fl c Ar core
				Specify location of a resulting decrypted core dump.
				.It Fl d Ar crashdir
				Specify an alternative crash dump directory. The default crash dump directory is
				.Pa /var/crash .
				.It Fl n Ar dumpnr
				Specify a number of a crash dump to be decrypted.
				.El
				.Sh EXIT STATUS
				The
				.Nm
				utility exits 0 on success, and >0 if an error occurs.
				.Sh SEE ALSO
				.Xr capsicum 4 ,
				.Xr dumpon 8 ,
				.Xr kgdb 1 ,
				.Xr savecore 8 ,
				.Xr syslogd 8
				.Sh AUTHORS
				The
				.Nm
				was implemented by
				.An -nosplit
				.An Konrad Witaszczyk Aq Mt def@FreeBSD.org .