NetBSD-5.0.2/usr.sbin/paxctl/paxctl.8

.\"	$NetBSD: paxctl.8,v 1.10 2008/08/11 10:58:02 christos Exp $
.\"
.\" Copyright 2006 Elad Efrat <elad@NetBSD.org>
.\" Copyright 2008 Christos Zoulas <christos@NetBSD.org>
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.Dd August 11, 2008
.Dt PAXCTL 8
.Os
.Sh NAME
.Nm paxctl
.Nd list and modify PaX flags associated with an ELF program
.Sh SYNOPSIS
.Nm
.Ar flags
.Ar program ...
.Sh DESCRIPTION
The
.Nm
utility is used to list and manipulate PaX flags associated with an ELF
program.
.Pp
Each flag can be prefixed either with a
.Dq +
or a
.Dq -
sign to add or remove the flag, respectively.
.Pp
The following flags are available:
.Bl -tag -width flag
.It a
Explicitly disable PaX ASLR for
.Ar program .
.It A
Explicitly enable PaX ASLR for
.Ar program .
.It g
Explicitly disable PaX Segvguard for
.Ar program .
.It G
Explicitly enable PaX Segvguard for
.Ar program .
.It m
Explicitly disable PaX MPROTECT
.Po Xr mprotect 2
restrictions
.Pc
for
.Ar program .
.It M
Explicitly enable PaX MPROTECT
.Po Xr mprotect 2
restrictions
.Pc
for
.Ar program .
.El
.Pp
To view existing flags on a file, execute
.Nm
without any flags.
.Sh SEE ALSO
.Xr sysctl 3 ,
.Xr options 4 ,
.Xr security 8 ,
.Xr sysctl 8
.Sh HISTORY
The
.Nm
utility first appeared in
.Nx 4.0 .
.Pp
The
.Nm
utility is modeled after a tool of the same name available for Linux from the
PaX project.
.Sh AUTHORS
.An Elad Efrat Aq elad@NetBSD.org
.An Christos Zoulas Aq christos@NetBSD.org
.Sh BUGS
The
.Nm
utility currently uses
.Xr elf 5
.Dq note
sections to mark executables as PaX Segvguard enabled.
This will be done using
.Xr fileassoc 9
in the future so that we can control who does the marking and
not altering the binary file signature.