| 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 | |