Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/sys/pax.h
Version:
- FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
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1 /* $NetBSD: pax.h,v 1.11 2007/12/27 15:21:53 elad Exp $ */ 2 3 /*- 4 * Copyright (c) 2006 Elad Efrat <elad@NetBSD.org> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 #ifndef _SYS_PAX_H_ 31 #define _SYS_PAX_H_ 32 33 #include <uvm/uvm_extern.h> 34 35 struct lwp; 36 struct exec_package; 37 struct vmspace; 38 39 #ifdef PAX_ASLR 40 /* 41 * We stick this here because we need it in kern/exec_elf32.c for now. 42 */ 43 #ifndef PAX_ASLR_DELTA_EXEC_LEN 44 #define PAX_ASLR_DELTA_EXEC_LEN 12 45 #endif 46 #endif /* PAX_ASLR */ 47 48 void pax_init(void); 49 void pax_adjust(struct lwp *, uint32_t); 50 51 void pax_mprotect(struct lwp *, vm_prot_t *, vm_prot_t *); 52 int pax_segvguard(struct lwp *, struct vnode *, const char *, bool); 53 54 #define PAX_ASLR_DELTA(delta, lsb, len) \ 55 (((delta) & ((1UL << (len)) - 1)) << (lsb)) 56 bool pax_aslr_active(struct lwp *); 57 void pax_aslr_init(struct lwp *, struct vmspace *); 58 void pax_aslr_stack(struct lwp *, struct exec_package *, u_long *); 59 void pax_aslr(struct lwp *, vaddr_t *, vaddr_t, int); 60 61 #endif /* !_SYS_PAX_H_ */
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