/* $NetBSD: pax.h,v 1.11 2007/12/27 15:21:53 elad Exp $ */ /*- * Copyright (c) 2006 Elad Efrat <elad@NetBSD.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. * 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. */ #ifndef _SYS_PAX_H_ #define _SYS_PAX_H_ #include <uvm/uvm_extern.h> struct lwp; struct exec_package; struct vmspace; #ifdef PAX_ASLR /* * We stick this here because we need it in kern/exec_elf32.c for now. */ #ifndef PAX_ASLR_DELTA_EXEC_LEN #define PAX_ASLR_DELTA_EXEC_LEN 12 #endif #endif /* PAX_ASLR */ void pax_init(void); void pax_adjust(struct lwp *, uint32_t); void pax_mprotect(struct lwp *, vm_prot_t *, vm_prot_t *); int pax_segvguard(struct lwp *, struct vnode *, const char *, bool); #define PAX_ASLR_DELTA(delta, lsb, len) \ (((delta) & ((1UL << (len)) - 1)) << (lsb)) bool pax_aslr_active(struct lwp *); void pax_aslr_init(struct lwp *, struct vmspace *); void pax_aslr_stack(struct lwp *, struct exec_package *, u_long *); void pax_aslr(struct lwp *, vaddr_t *, vaddr_t, int); #endif /* !_SYS_PAX_H_ */