1 /* $NetBSD: linux_oldmmap.c,v 1.72 2009/08/18 02:04:14 christos 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: linux_oldmmap.c,v 1.72 2009/08/18 02:04:14 christos Exp $"); 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/mount.h> 38 39 #include <sys/sched.h> 40 #include <sys/syscallargs.h> 41 42 #include <uvm/uvm_param.h> 43 44 #ifdef __amd64__ 45 #include <compat/netbsd32/netbsd32.h> 46 47 #include <compat/linux32/common/linux32_types.h> 48 #include <compat/linux32/common/linux32_machdep.h> 49 #endif 50 51 #include <compat/linux/common/linux_types.h> 52 #include <compat/linux/common/linux_mmap.h> 53 #include <compat/linux/common/linux_oldmmap.h> 54 #include <compat/linux/common/linux_signal.h> 55 #include <compat/linux/common/linux_ipc.h> 56 #include <compat/linux/common/linux_sem.h> 57 58 #include <compat/linux/linux_syscallargs.h> 59 60 /* Used on: arm, i386, m68k */ 61 /* Used for linux32 on: amd64 */ 62 /* Not used on: alpha, mips, pcc, sparc, sparc64 */ 63 64 #undef DPRINTF 65 #ifdef DEBUG_LINUX 66 #define DPRINTF(a) uprintf a 67 #else 68 #define DPRINTF(a) 69 #endif 70 71 /* 72 * Linux wants to pass everything to a syscall in registers. 73 * However mmap() has 6 of them. Oops: out of register error. 74 * They just pass everything in a structure. 75 */ 76 int 77 linux_sys_old_mmap(struct lwp *l, const struct linux_sys_old_mmap_args *uap, register_t *retval) 78 { 79 /* { 80 syscallarg(struct linux_oldmmap *) lmp; 81 } */ 82 struct linux_oldmmap lmap; 83 struct linux_sys_mmap_args nlmap; 84 int error; 85 86 if ((error = copyin(SCARG(uap, lmp), &lmap, sizeof lmap))) 87 return error; 88 89 if (lmap.lm_offset & PAGE_MASK) { 90 DPRINTF(("old_mmap: 0x%x\n", lmap.lm_offset)); 91 return EINVAL; 92 } 93 94 SCARG(&nlmap,addr) = lmap.lm_addr; 95 SCARG(&nlmap,len) = lmap.lm_len; 96 SCARG(&nlmap,prot) = lmap.lm_prot; 97 SCARG(&nlmap,flags) = lmap.lm_flags; 98 SCARG(&nlmap,fd) = lmap.lm_fd; 99 SCARG(&nlmap,offset) = lmap.lm_offset; 100 error = linux_sys_mmap(l, &nlmap, retval); 101 DPRINTF(("old_mmap(%#x, %u, %u, %u, %d, %u) = %d\n", 102 lmap.lm_addr, lmap.lm_len, lmap.lm_prot, lmap.lm_flags, 103 lmap.lm_fd, lmap.lm_offset, error)); 104 return error; 105 } 106 107