Page MenuHomeFreeBSD
Files F743405

veriexecctl.8
wblock (Warren Block)
Actions

Authored By
wblock
Dec 9 2016, 5:28 PM
Size
3 KB
Referenced Files
None
Subscribers
None

veriexecctl.8
View Options

.\" $NetBSD: veriexecctl.8,v 1.5 2004/03/06 23:40:13 wiz 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 1.2 2004-09-09 05:51:04 dsw Exp $
.\"
.Dd December 9, 2016
.Dt VERIEXECCTL 8
.Os
.Sh NAME
.Nm veriexecctl
.Nd load verified exec fingerprints
.Sh SYNOPSIS
.Nm
.Ar fingerprints
.Sh DESCRIPTION
The
.Nm
command loads an in-kernel metadata store of the fingerprints
given in the
.Ar fingerprints
file.
The kernel can then calculate the fingerprint of programs at time of
execution or files that are opened with
.Dv O_VERIFY
and verify whether the fingerprints match.
.Pp
The
.Ar fingerprints
file contains lines of fields separated by one or more whitespace
characters:
.Pp
.Dl path type fingerprint options
.Bl -tag -width fingerprint
.It Em path
Full path to the file.
.It Em type
Type of fingerprint used.
Currently this may be any of rmd160, sha1, sha256, sha384, or sha512.
Availability of these fingerprint types is dependent on kernel support.
The
.Va security.mac.veriexec.algorithms
sysctl is consulted to determine the list of valid fingerprint types.
.It Em fingerprint
A hexadecimal representation of the fingerprint for the file.
.It Em options
Associated options for the file.
Currently there are four valid options:
.Bl -tag -width INDIRECT
.It Pa 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 Pa 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.
.It Pa NO_PTRACE
If this option is set then the executable cannot be traced with the
.Xr ptrace 2 process tracing and debugging call.
.It Pa TRUSTED
If this option is set then the executable is allowed to write to the
.Xr mem 4
devices.
By default, when verified execution is enforced, no process
is allowed to write to the
.Xr mem 4
devices.
.El
.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 sysctl 3
.Sh HISTORY
.Nm
first appeared in
.Nx 2.0 .
.Sh NOTES
.Nm
requires the kernel to have been configured with the
.Dv MAC_VERIEXEC
option and the veriexec pseudo-device.

File Metadata

Mime Type
text/troff
Storage Engine
blob
Storage Format
Raw Data
Storage Handle
683956
Default Alt Text
veriexecctl.8 (3 KB)

Event Timeline