linux_oldmmap.c revision 1.65
1/* $NetBSD: linux_oldmmap.c,v 1.65 2006/02/09 19:18:56 manu Exp $ */ 2 3/*- 4 * Copyright (c) 1995, 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Frank van der Linden and Eric Haszlakiewicz. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39#include <sys/cdefs.h> 40__KERNEL_RCSID(0, "$NetBSD: linux_oldmmap.c,v 1.65 2006/02/09 19:18:56 manu Exp $"); 41 42#include <sys/param.h> 43#include <sys/systm.h> 44#include <sys/mount.h> 45 46#include <sys/sa.h> 47#include <sys/syscallargs.h> 48 49#include <uvm/uvm_param.h> 50 51#ifdef __amd64__ 52#include <compat/netbsd32/netbsd32.h> 53 54#include <compat/linux32/common/linux32_types.h> 55#include <compat/linux32/common/linux32_machdep.h> 56#endif 57 58#include <compat/linux/common/linux_types.h> 59#include <compat/linux/common/linux_mmap.h> 60#include <compat/linux/common/linux_oldmmap.h> 61#include <compat/linux/common/linux_signal.h> 62 63#include <compat/linux/linux_syscallargs.h> 64 65/* Used on: arm, i386, m68k */ 66/* Used for linux32 on: amd64 */ 67/* Not used on: alpha, mips, pcc, sparc, sparc64 */ 68 69#undef DPRINTF 70#ifdef DEBUG_LINUX 71#define DPRINTF(a) uprintf a 72#else 73#define DPRINTF(a) 74#endif 75 76/* 77 * Linux wants to pass everything to a syscall in registers. 78 * However mmap() has 6 of them. Oops: out of register error. 79 * They just pass everything in a structure. 80 */ 81int 82linux_sys_old_mmap(l, v, retval) 83 struct lwp *l; 84 void *v; 85 register_t *retval; 86{ 87 struct linux_sys_old_mmap_args /* { 88 syscallarg(struct linux_oldmmap *) lmp; 89 } */ *uap = v; 90 struct linux_oldmmap lmap; 91 struct linux_sys_mmap_args nlmap; 92 int error; 93 94 if ((error = copyin(SCARG(uap, lmp), &lmap, sizeof lmap))) 95 return error; 96 97 if (lmap.lm_offset & PAGE_MASK) 98 return EINVAL; 99 100 SCARG(&nlmap,addr) = lmap.lm_addr; 101 SCARG(&nlmap,len) = lmap.lm_len; 102 SCARG(&nlmap,prot) = lmap.lm_prot; 103 SCARG(&nlmap,flags) = lmap.lm_flags; 104 SCARG(&nlmap,fd) = lmap.lm_fd; 105 SCARG(&nlmap,offset) = lmap.lm_offset; 106 DPRINTF(("old_mmap(%#x, %u, %u, %u, %d, %u)\n", 107 lmap.lm_addr, lmap.lm_len, lmap.lm_prot, lmap.lm_flags, 108 lmap.lm_fd, lmap.lm_offset)); 109 return linux_sys_mmap(l, &nlmap, retval); 110} 111 112