vm_43.c revision 1.9
1 /* $NetBSD: vm_43.c,v 1.9 2003/08/07 16:30:37 agc Exp $ */ 2 3 /* 4 * Copyright (c) 1991, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * the Systems Programming Group of the University of Utah Computer 9 * Science Department. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * from: Utah $Hdr: vm_mmap.c 1.6 91/10/21$ 36 * 37 * @(#)vm_mmap.c 8.5 (Berkeley) 5/19/94 38 */ 39 40 /* 41 * Copyright (c) 1988 University of Utah. 42 * 43 * This code is derived from software contributed to Berkeley by 44 * the Systems Programming Group of the University of Utah Computer 45 * Science Department. 46 * 47 * Redistribution and use in source and binary forms, with or without 48 * modification, are permitted provided that the following conditions 49 * are met: 50 * 1. Redistributions of source code must retain the above copyright 51 * notice, this list of conditions and the following disclaimer. 52 * 2. Redistributions in binary form must reproduce the above copyright 53 * notice, this list of conditions and the following disclaimer in the 54 * documentation and/or other materials provided with the distribution. 55 * 3. All advertising materials mentioning features or use of this software 56 * must display the following acknowledgement: 57 * This product includes software developed by the University of 58 * California, Berkeley and its contributors. 59 * 4. Neither the name of the University nor the names of its contributors 60 * may be used to endorse or promote products derived from this software 61 * without specific prior written permission. 62 * 63 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 64 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 65 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 66 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 67 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 68 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 69 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 70 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 71 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 72 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 73 * SUCH DAMAGE. 74 * 75 * from: Utah $Hdr: vm_mmap.c 1.6 91/10/21$ 76 * 77 * @(#)vm_mmap.c 8.5 (Berkeley) 5/19/94 78 */ 79 80 /* 81 * Mapped file (mmap) interface to VM 82 */ 83 84 #include <sys/cdefs.h> 85 __KERNEL_RCSID(0, "$NetBSD: vm_43.c,v 1.9 2003/08/07 16:30:37 agc Exp $"); 86 87 #include <sys/param.h> 88 #include <sys/systm.h> 89 #include <sys/filedesc.h> 90 #include <sys/resourcevar.h> 91 #include <sys/proc.h> 92 #include <sys/vnode.h> 93 #include <sys/file.h> 94 #include <sys/mman.h> 95 96 #include <sys/mount.h> 97 #include <sys/sa.h> 98 #include <sys/syscallargs.h> 99 100 #include <miscfs/specfs/specdev.h> 101 102 /* ARGSUSED */ 103 int 104 compat_43_sys_getpagesize(struct lwp *l, void *v, register_t *retval) 105 { 106 107 *retval = PAGE_SIZE; 108 return (0); 109 } 110 111 int 112 compat_43_sys_mmap(struct lwp *l, void *v, register_t *retval) 113 { 114 struct compat_43_sys_mmap_args /* { 115 syscallarg(caddr_t) addr; 116 syscallarg(size_t) len; 117 syscallarg(int) prot; 118 syscallarg(int) flags; 119 syscallarg(int) fd; 120 syscallarg(long) pos; 121 } */ *uap = v; 122 struct sys_mmap_args /* { 123 syscallarg(caddr_t) addr; 124 syscallarg(size_t) len; 125 syscallarg(int) prot; 126 syscallarg(int) flags; 127 syscallarg(int) fd; 128 syscallarg(long) pad; 129 syscallarg(off_t) pos; 130 } */ nargs; 131 static const char cvtbsdprot[8] = { 132 0, 133 PROT_EXEC, 134 PROT_WRITE, 135 PROT_EXEC|PROT_WRITE, 136 PROT_READ, 137 PROT_EXEC|PROT_READ, 138 PROT_WRITE|PROT_READ, 139 PROT_EXEC|PROT_WRITE|PROT_READ, 140 }; 141 #define OMAP_ANON 0x0002 142 #define OMAP_COPY 0x0020 143 #define OMAP_SHARED 0x0010 144 #define OMAP_FIXED 0x0100 145 #define OMAP_INHERIT 0x0800 146 147 SCARG(&nargs, addr) = SCARG(uap, addr); 148 SCARG(&nargs, len) = SCARG(uap, len); 149 SCARG(&nargs, prot) = cvtbsdprot[SCARG(uap, prot)&0x7]; 150 SCARG(&nargs, flags) = 0; 151 if (SCARG(uap, flags) & OMAP_ANON) 152 SCARG(&nargs, flags) |= MAP_ANON; 153 if (SCARG(uap, flags) & OMAP_COPY) 154 SCARG(&nargs, flags) |= MAP_COPY; 155 if (SCARG(uap, flags) & OMAP_SHARED) 156 SCARG(&nargs, flags) |= MAP_SHARED; 157 else 158 SCARG(&nargs, flags) |= MAP_PRIVATE; 159 if (SCARG(uap, flags) & OMAP_FIXED) 160 SCARG(&nargs, flags) |= MAP_FIXED; 161 if (SCARG(uap, flags) & OMAP_INHERIT) 162 SCARG(&nargs, flags) |= MAP_INHERIT; 163 SCARG(&nargs, fd) = SCARG(uap, fd); 164 SCARG(&nargs, pos) = SCARG(uap, pos); 165 return (sys_mmap(l, &nargs, retval)); 166 } 167
Indexes created Wed Sep 24 02:09:48 GMT 2025