1 /* $NetBSD: vm_43.c,v 1.8 2003/01/18 07:28:34 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 1988 University of Utah. 5 * Copyright (c) 1991, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * the Systems Programming Group of the University of Utah Computer 10 * Science Department. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by the University of 23 * California, Berkeley and its contributors. 24 * 4. Neither the name of the University nor the names of its contributors 25 * may be used to endorse or promote products derived from this software 26 * without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 * SUCH DAMAGE. 39 * 40 * from: Utah $Hdr: vm_mmap.c 1.6 91/10/21$ 41 * 42 * @(#)vm_mmap.c 8.5 (Berkeley) 5/19/94 43 */ 44 45 /* 46 * Mapped file (mmap) interface to VM 47 */ 48 49 #include <sys/cdefs.h> 50 __KERNEL_RCSID(0, "$NetBSD: vm_43.c,v 1.8 2003/01/18 07:28:34 thorpej Exp $"); 51 52 #include <sys/param.h> 53 #include <sys/systm.h> 54 #include <sys/filedesc.h> 55 #include <sys/resourcevar.h> 56 #include <sys/proc.h> 57 #include <sys/vnode.h> 58 #include <sys/file.h> 59 #include <sys/mman.h> 60 61 #include <sys/mount.h> 62 #include <sys/sa.h> 63 #include <sys/syscallargs.h> 64 65 #include <miscfs/specfs/specdev.h> 66 67 /* ARGSUSED */ 68 int 69 compat_43_sys_getpagesize(struct lwp *l, void *v, register_t *retval) 70 { 71 72 *retval = PAGE_SIZE; 73 return (0); 74 } 75 76 int 77 compat_43_sys_mmap(struct lwp *l, void *v, register_t *retval) 78 { 79 struct compat_43_sys_mmap_args /* { 80 syscallarg(caddr_t) addr; 81 syscallarg(size_t) len; 82 syscallarg(int) prot; 83 syscallarg(int) flags; 84 syscallarg(int) fd; 85 syscallarg(long) pos; 86 } */ *uap = v; 87 struct sys_mmap_args /* { 88 syscallarg(caddr_t) addr; 89 syscallarg(size_t) len; 90 syscallarg(int) prot; 91 syscallarg(int) flags; 92 syscallarg(int) fd; 93 syscallarg(long) pad; 94 syscallarg(off_t) pos; 95 } */ nargs; 96 static const char cvtbsdprot[8] = { 97 0, 98 PROT_EXEC, 99 PROT_WRITE, 100 PROT_EXEC|PROT_WRITE, 101 PROT_READ, 102 PROT_EXEC|PROT_READ, 103 PROT_WRITE|PROT_READ, 104 PROT_EXEC|PROT_WRITE|PROT_READ, 105 }; 106 #define OMAP_ANON 0x0002 107 #define OMAP_COPY 0x0020 108 #define OMAP_SHARED 0x0010 109 #define OMAP_FIXED 0x0100 110 #define OMAP_INHERIT 0x0800 111 112 SCARG(&nargs, addr) = SCARG(uap, addr); 113 SCARG(&nargs, len) = SCARG(uap, len); 114 SCARG(&nargs, prot) = cvtbsdprot[SCARG(uap, prot)&0x7]; 115 SCARG(&nargs, flags) = 0; 116 if (SCARG(uap, flags) & OMAP_ANON) 117 SCARG(&nargs, flags) |= MAP_ANON; 118 if (SCARG(uap, flags) & OMAP_COPY) 119 SCARG(&nargs, flags) |= MAP_COPY; 120 if (SCARG(uap, flags) & OMAP_SHARED) 121 SCARG(&nargs, flags) |= MAP_SHARED; 122 else 123 SCARG(&nargs, flags) |= MAP_PRIVATE; 124 if (SCARG(uap, flags) & OMAP_FIXED) 125 SCARG(&nargs, flags) |= MAP_FIXED; 126 if (SCARG(uap, flags) & OMAP_INHERIT) 127 SCARG(&nargs, flags) |= MAP_INHERIT; 128 SCARG(&nargs, fd) = SCARG(uap, fd); 129 SCARG(&nargs, pos) = SCARG(uap, pos); 130 return (sys_mmap(l, &nargs, retval)); 131 } 132