cd0c4134f1
via sysctl(8) using kern.veriexec.algorithms. Also add an entry for the 'algorithms' variable in sysctl.8 forgotten in the last commit.
129 lines
4.2 KiB
Groff
129 lines
4.2 KiB
Groff
.\" $NetBSD: veriexecctl.8,v 1.12 2005/05/20 19:52:52 elad Exp $
|
|
.\"
|
|
.\" Copyright (c) 1999
|
|
.\" Brett Lymn - blymn@baea.com.au, brett_lymn@yahoo.com.au
|
|
.\"
|
|
.\" This code is donated to The NetBSD Foundation by the author.
|
|
.\"
|
|
.\" 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.
|
|
.\" 3. The name of the Author may not be used to endorse or promote
|
|
.\" products derived from this software without specific prior written
|
|
.\" permission.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
|
|
.\"
|
|
.\" $Id: veriexecctl.8,v 1.12 2005/05/20 19:52:52 elad Exp $
|
|
.\"
|
|
.Dd April 22, 2005
|
|
.Dt VERIEXECCTL 8
|
|
.Os
|
|
.Sh NAME
|
|
.Nm veriexecctl
|
|
.Nd load or report verified exec fingerprints
|
|
.Sh SYNOPSIS
|
|
.Nm
|
|
.Cm fingerprints
|
|
.Nm
|
|
.Cm load Ar veriexec.conf
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Nm
|
|
command is used to manipulate the Verified Exec feature.
|
|
Verified Exec must have been configured into the booted kernel for this
|
|
commaned to work.
|
|
.Sh COMMANDS
|
|
.Bl -tag -width 25n
|
|
.It Cm load Ar veriexec.conf
|
|
Load the fingerprint entries contained in
|
|
.Ar veriexec.conf
|
|
into the in kernel tables.
|
|
This operation is only available if kern.securelevel is less than or
|
|
equal to zero.
|
|
Once loaded the kernel can then validate executed programs
|
|
or files against the loaded fingerprints and report when fingerprints
|
|
do not match.
|
|
.El
|
|
.Sh VERIEXEC.CONF
|
|
The
|
|
.Pa veriexec.conf
|
|
file contains lines of fields (separated by one or more whitespace
|
|
characters) of the form:
|
|
.Pp
|
|
.Dl path type fingerprint options
|
|
.Pp
|
|
Where
|
|
.Em path
|
|
is the full path to the file and
|
|
.Em type
|
|
is the type of fingerprint used, see above for the default list.
|
|
Other fingerprints may be available depending on kernel configuration,
|
|
use the
|
|
.Cm fingerprints
|
|
command option to extract the fingerprints supported by the currently
|
|
running kernel.
|
|
The
|
|
.Em fingerprint
|
|
field is a hexadecimal representation of the fingerprint for
|
|
the file.
|
|
The field
|
|
.Em options
|
|
contains the associated options for the file.
|
|
Currently there are two valid options:
|
|
.Pp
|
|
.Bl -tag -width INDIRECT -compact
|
|
.It Dv INDIRECT
|
|
If this option is set then the executable cannot be invoked directly, it
|
|
can only be used as an interpreter in shell scripts.
|
|
.It Dv FILE
|
|
Indicates that the fingerprint is associated with a file, not an
|
|
executable.
|
|
Files have their fingerprints verified during
|
|
.Xr open 2
|
|
and are automatically made read only.
|
|
This option may be used to verify shared libraries have not been
|
|
tampered with.
|
|
.El
|
|
.Pp
|
|
There must be only one executable/fingerprint pair per line.
|
|
Comments are indicated by the first character of a line being a
|
|
.Sq \&#
|
|
character.
|
|
.Sh FILES
|
|
.Bl -tag -width /dev/veriexec -compact
|
|
.It Pa /dev/veriexec
|
|
verified executable device node
|
|
.El
|
|
.Sh SEE ALSO
|
|
.Xr veriexec 4 ,
|
|
.Pa /usr/share/examples/veriexecctl/gen_md5 ,
|
|
.Pa /usr/share/examples/veriexecctl/gen_rmd160 ,
|
|
.Pa /usr/share/examples/veriexecctl/gen_sha1
|
|
.Sh HISTORY
|
|
.Nm
|
|
first appeared in
|
|
.Nx 2.0 .
|
|
.Sh NOTES
|
|
.Nm
|
|
requires the kernel to have been configured with the
|
|
.Dv VERIFIED_EXEC
|
|
option and the verifiedexec pseudo-device.
|
|
.Sh BUGS
|
|
There must be no whitespace in the path field of a fingerprint entry.
|