1 /* $NetBSD: linux_oldmmap.c,v 1.66 2007/02/09 21:55:19 ad 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 1.66 2007/02/09 21:55:19 ad Exp $"); 41 42 #include <sys/param.h> 43 #include <sys/systm.h> 44 #include <sys/mount.h> 45 46 #include <sys/syscallargs.h> 47 48 #include <uvm/uvm_param.h> 49 50 #ifdef __amd64__ 51 #include <compat/netbsd32/netbsd32.h> 52 53 #include <compat/linux32/common/linux32_types.h> 54 #include <compat/linux32/common/linux32_machdep.h> 55 #endif 56 57 #include <compat/linux/common/linux_types.h> 58 #include <compat/linux/common/linux_mmap.h> 59 #include <compat/linux/common/linux_oldmmap.h> 60 #include <compat/linux/common/linux_signal.h> 61 62 #include <compat/linux/linux_syscallargs.h> 63 64 /* Used on: arm, i386, m68k */ 65 /* Used for linux32 on: amd64 */ 66 /* Not used on: alpha, mips, pcc, sparc, sparc64 */ 67 68 #undef DPRINTF 69 #ifdef DEBUG_LINUX 70 #define DPRINTF(a) uprintf a 71 #else 72 #define DPRINTF(a) 73 #endif 74 75 /* 76 * Linux wants to pass everything to a syscall in registers. 77 * However mmap() has 6 of them. Oops: out of register error. 78 * They just pass everything in a structure. 79 */ 80 int 81 linux_sys_old_mmap(l, v, retval) 82 struct lwp *l; 83 void *v; 84 register_t *retval; 85 { 86 struct linux_sys_old_mmap_args /* { 87 syscallarg(struct linux_oldmmap *) lmp; 88 } */ *uap = v; 89 struct linux_oldmmap lmap; 90 struct linux_sys_mmap_args nlmap; 91 int error; 92 93 if ((error = copyin(SCARG(uap, lmp), &lmap, sizeof lmap))) 94 return error; 95 96 if (lmap.lm_offset & PAGE_MASK) 97 return EINVAL; 98 99 SCARG(&nlmap,addr) = lmap.lm_addr; 100 SCARG(&nlmap,len) = lmap.lm_len; 101 SCARG(&nlmap,prot) = lmap.lm_prot; 102 SCARG(&nlmap,flags) = lmap.lm_flags; 103 SCARG(&nlmap,fd) = lmap.lm_fd; 104 SCARG(&nlmap,offset) = lmap.lm_offset; 105 DPRINTF(("old_mmap(%#x, %u, %u, %u, %d, %u)\n", 106 lmap.lm_addr, lmap.lm_len, lmap.lm_prot, lmap.lm_flags, 107 lmap.lm_fd, lmap.lm_offset)); 108 return linux_sys_mmap(l, &nlmap, retval); 109 } 110 111