1 /* $NetBSD: vm_43.c,v 1.6 2000/06/28 15:39:25 mrg 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 58 #include <sys/mount.h> 59 #include <sys/syscallargs.h> 60 61 #include <miscfs/specfs/specdev.h> 62 63 /* ARGSUSED */ 64 int 65 compat_43_sys_getpagesize(p, v, retval) 66 struct proc *p; 67 void *v; 68 register_t *retval; 69 { 70 71 *retval = PAGE_SIZE; 72 return (0); 73 } 74 75 int 76 compat_43_sys_mmap(p, v, retval) 77 struct proc *p; 78 void *v; 79 register_t *retval; 80 { 81 struct compat_43_sys_mmap_args /* { 82 syscallarg(caddr_t) addr; 83 syscallarg(size_t) len; 84 syscallarg(int) prot; 85 syscallarg(int) flags; 86 syscallarg(int) fd; 87 syscallarg(long) pos; 88 } */ *uap = v; 89 struct sys_mmap_args /* { 90 syscallarg(caddr_t) addr; 91 syscallarg(size_t) len; 92 syscallarg(int) prot; 93 syscallarg(int) flags; 94 syscallarg(int) fd; 95 syscallarg(long) pad; 96 syscallarg(off_t) pos; 97 } */ nargs; 98 static const char cvtbsdprot[8] = { 99 0, 100 PROT_EXEC, 101 PROT_WRITE, 102 PROT_EXEC|PROT_WRITE, 103 PROT_READ, 104 PROT_EXEC|PROT_READ, 105 PROT_WRITE|PROT_READ, 106 PROT_EXEC|PROT_WRITE|PROT_READ, 107 }; 108 #define OMAP_ANON 0x0002 109 #define OMAP_COPY 0x0020 110 #define OMAP_SHARED 0x0010 111 #define OMAP_FIXED 0x0100 112 #define OMAP_INHERIT 0x0800 113 114 SCARG(&nargs, addr) = SCARG(uap, addr); 115 SCARG(&nargs, len) = SCARG(uap, len); 116 SCARG(&nargs, prot) = cvtbsdprot[SCARG(uap, prot)&0x7]; 117 SCARG(&nargs, flags) = 0; 118 if (SCARG(uap, flags) & OMAP_ANON) 119 SCARG(&nargs, flags) |= MAP_ANON; 120 if (SCARG(uap, flags) & OMAP_COPY) 121 SCARG(&nargs, flags) |= MAP_COPY; 122 if (SCARG(uap, flags) & OMAP_SHARED) 123 SCARG(&nargs, flags) |= MAP_SHARED; 124 else 125 SCARG(&nargs, flags) |= MAP_PRIVATE; 126 if (SCARG(uap, flags) & OMAP_FIXED) 127 SCARG(&nargs, flags) |= MAP_FIXED; 128 if (SCARG(uap, flags) & OMAP_INHERIT) 129 SCARG(&nargs, flags) |= MAP_INHERIT; 130 SCARG(&nargs, fd) = SCARG(uap, fd); 131 SCARG(&nargs, pos) = SCARG(uap, pos); 132 return (sys_mmap(p, &nargs, retval)); 133 } 134