1 /* $NetBSD: vm_43.c,v 1.2 1999/04/01 18:37:33 drochner 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/param.h> 50 #include <sys/systm.h> 51 #include <sys/filedesc.h> 52 #include <sys/resourcevar.h> 53 #include <sys/proc.h> 54 #include <sys/vnode.h> 55 #include <sys/file.h> 56 #include <sys/mman.h> 57 #include <sys/conf.h> 58 59 #include <sys/mount.h> 60 #include <sys/syscallargs.h> 61 62 #include <miscfs/specfs/specdev.h> 63 64 #include <vm/vm.h> 65 #include <vm/vm_prot.h> 66 67 /* ARGSUSED */ 68 int 69 compat_43_sys_getpagesize(p, v, retval) 70 struct proc *p; 71 void *v; 72 register_t *retval; 73 { 74 75 *retval = PAGE_SIZE; 76 return (0); 77 } 78 79 int 80 compat_43_sys_mmap(p, v, retval) 81 struct proc *p; 82 void *v; 83 register_t *retval; 84 { 85 register struct compat_43_sys_mmap_args /* { 86 syscallarg(caddr_t) addr; 87 syscallarg(size_t) len; 88 syscallarg(int) prot; 89 syscallarg(int) flags; 90 syscallarg(int) fd; 91 syscallarg(long) pos; 92 } */ *uap = v; 93 struct sys_mmap_args /* { 94 syscallarg(caddr_t) addr; 95 syscallarg(size_t) len; 96 syscallarg(int) prot; 97 syscallarg(int) flags; 98 syscallarg(int) fd; 99 syscallarg(long) pad; 100 syscallarg(off_t) pos; 101 } */ nargs; 102 static const char cvtbsdprot[8] = { 103 0, 104 PROT_EXEC, 105 PROT_WRITE, 106 PROT_EXEC|PROT_WRITE, 107 PROT_READ, 108 PROT_EXEC|PROT_READ, 109 PROT_WRITE|PROT_READ, 110 PROT_EXEC|PROT_WRITE|PROT_READ, 111 }; 112 #define OMAP_ANON 0x0002 113 #define OMAP_COPY 0x0020 114 #define OMAP_SHARED 0x0010 115 #define OMAP_FIXED 0x0100 116 #define OMAP_INHERIT 0x0800 117 118 SCARG(&nargs, addr) = SCARG(uap, addr); 119 SCARG(&nargs, len) = SCARG(uap, len); 120 SCARG(&nargs, prot) = cvtbsdprot[SCARG(uap, prot)&0x7]; 121 SCARG(&nargs, flags) = 0; 122 if (SCARG(uap, flags) & OMAP_ANON) 123 SCARG(&nargs, flags) |= MAP_ANON; 124 if (SCARG(uap, flags) & OMAP_COPY) 125 SCARG(&nargs, flags) |= MAP_COPY; 126 if (SCARG(uap, flags) & OMAP_SHARED) 127 SCARG(&nargs, flags) |= MAP_SHARED; 128 else 129 SCARG(&nargs, flags) |= MAP_PRIVATE; 130 if (SCARG(uap, flags) & OMAP_FIXED) 131 SCARG(&nargs, flags) |= MAP_FIXED; 132 if (SCARG(uap, flags) & OMAP_INHERIT) 133 SCARG(&nargs, flags) |= MAP_INHERIT; 134 SCARG(&nargs, fd) = SCARG(uap, fd); 135 SCARG(&nargs, pos) = SCARG(uap, pos); 136 return (sys_mmap(p, &nargs, retval)); 137 } 138