4 * 43BSD_VM.C - 4.3BSD compatibility virtual memory syscalls
6 * Copyright (c) 1988 University of Utah.
7 * Copyright (c) 1991, 1993
8 * The Regents of the University of California. All rights reserved.
10 * This code is derived from software contributed to Berkeley by
11 * the Systems Programming Group of the University of Utah Computer
14 * Redistribution and use in source and binary forms, with or without
15 * modification, are permitted provided that the following conditions
17 * 1. Redistributions of source code must retain the above copyright
18 * notice, this list of conditions and the following disclaimer.
19 * 2. Redistributions in binary form must reproduce the above copyright
20 * notice, this list of conditions and the following disclaimer in the
21 * documentation and/or other materials provided with the distribution.
22 * 3. All advertising materials mentioning features or use of this software
23 * must display the following acknowledgement:
24 * This product includes software developed by the University of
25 * California, Berkeley and its contributors.
26 * 4. Neither the name of the University nor the names of its contributors
27 * may be used to endorse or promote products derived from this software
28 * without specific prior written permission.
30 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
31 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
32 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
33 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
34 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
35 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
36 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
37 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
38 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
39 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
42 * $DragonFly: src/sys/emulation/43bsd/43bsd_vm.c,v 1.4 2006/09/17 21:07:25 dillon Exp $
43 * from: DragonFly vm/vm_unix.c,v 1.3
44 * from: DragonFly vm/vm_mmap.c,v 1.15
47 #include "opt_compat.h"
49 #include <sys/param.h>
50 #include <sys/sysproto.h>
51 #include <sys/kern_syscall.h>
55 #include <sys/thread.h>
56 #include <sys/thread2.h>
62 sys_ovadvise(struct ovadvise_args *uap)
71 sys_ogetpagesize(struct getpagesize_args *uap)
73 uap->sysmsg_iresult = PAGE_SIZE;
81 sys_ommap(struct ommap_args *uap)
83 static const char cvtbsdprot[8] = {
87 PROT_EXEC | PROT_WRITE,
89 PROT_EXEC | PROT_READ,
90 PROT_WRITE | PROT_READ,
91 PROT_EXEC | PROT_WRITE | PROT_READ,
93 int error, flags, prot;
95 #define OMAP_ANON 0x0002
96 #define OMAP_COPY 0x0020
97 #define OMAP_SHARED 0x0010
98 #define OMAP_FIXED 0x0100
99 #define OMAP_INHERIT 0x0800
101 prot = cvtbsdprot[uap->prot & 0x7];
103 if (uap->flags & OMAP_ANON)
105 if (uap->flags & OMAP_COPY)
107 if (uap->flags & OMAP_SHARED)
110 flags |= MAP_PRIVATE;
111 if (uap->flags & OMAP_FIXED)
113 if (uap->flags & OMAP_INHERIT)
114 flags |= MAP_INHERIT;
116 lwkt_gettoken(&vm_token);
117 error = kern_mmap(curproc->p_vmspace, uap->addr, uap->len,
118 prot, flags, uap->fd, uap->pos,
119 &uap->sysmsg_resultp);
120 lwkt_reltoken(&vm_token);