121 lines
3.3 KiB
Groff
121 lines
3.3 KiB
Groff
.\" 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.
|
|
.\"
|
|
.Dd January 29, 2018
|
|
.Dt DECRYPTCORE 8
|
|
.Os
|
|
.Sh NAME
|
|
.Nm decryptcore
|
|
.Nd "decrypt a core dump of the operating system"
|
|
.Sh SYNOPSIS
|
|
.Nm
|
|
.Op Fl fLv
|
|
.Fl p Ar privatekeyfile
|
|
.Fl k Ar keyfile
|
|
.Fl e Ar encryptedcore
|
|
.Fl c Ar core
|
|
.Nm
|
|
.Op Fl fLv
|
|
.Op Fl d Ar crashdir
|
|
.Fl p Ar privatekeyfile
|
|
.Fl n Ar dumpnr
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Nm
|
|
utility first decrypts
|
|
.Ar keyfile
|
|
using
|
|
.Ar privatekeyfile
|
|
and then uses the resulting key to decrypt
|
|
.Ar encryptedcore
|
|
saved by
|
|
.Xr savecore 8 .
|
|
The 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
|
|
By default
|
|
.Nm
|
|
does not overwrite an old core dump as a user might want to store the core
|
|
somewhere else for the future.
|
|
This behaviour can be changed using the
|
|
.Fl f
|
|
flag.
|
|
.Pp
|
|
The
|
|
.Nm
|
|
utility can be started with the following command line arguments:
|
|
.Bl -tag -width ".Fl e Ar encryptedcore"
|
|
.It Fl f
|
|
Remove a decryped core dump if it already exists.
|
|
.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 encryptedcore
|
|
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
|
|
.Ex -std
|
|
.Sh SEE ALSO
|
|
.Xr kgdb 1 Pq Pa ports/devel/gdb ,
|
|
.Xr capsicum 4 ,
|
|
.Xr dumpon 8 ,
|
|
.Xr savecore 8 ,
|
|
.Xr syslogd 8
|
|
.Sh AUTHORS
|
|
The
|
|
.Nm
|
|
utility was implemented by
|
|
.An Konrad Witaszczyk Aq Mt def@FreeBSD.org .
|