1 /* 2 * Copyright (c) 1991 Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * $Id: vmspace.h,v 1.2 93/02/04 20:16:56 bill Exp $ 34 */ 35 36 #ifndef VMSPACE_H 37 #define VMSPACE_H 38 /* 39 * Shareable process virtual address space. 40 * May eventually be merged with vm_map. 41 * Several fields are temporary (text, data stuff). 42 */ 43 struct vmspace { 44 struct vm_map vm_map; /* VM address map */ 45 struct pmap vm_pmap; /* private physical map */ 46 int vm_refcnt; /* number of references */ 47 caddr_t vm_shm; /* SYS5 shared memory private data XXX */ 48 /* we copy from vm_startcopy to the end of the structure on fork */ 49 #define vm_startcopy vm_rssize 50 segsz_t vm_rssize; /* current resident set size in pages */ 51 segsz_t vm_swrss; /* resident set size before last swap */ 52 segsz_t vm_tsize; /* text size (pages) XXX */ 53 segsz_t vm_dsize; /* data size (pages) XXX */ 54 segsz_t vm_ssize; /* stack size (pages) */ 55 caddr_t vm_taddr; /* user virtual address of text XXX */ 56 caddr_t vm_daddr; /* user virtual address of data XXX */ 57 caddr_t vm_maxsaddr; /* user VA at max stack growth */ 58 }; 59 60 extern struct vmspace kernspace; 61 62 __BEGIN_DECLS 63 struct vmspace *vmspace_fork(struct vmspace *, struct proc *); 64 void vmspace_free(struct vmspace *); 65 int vmspace_allocate(struct vmspace *vs, vm_offset_t *addr, vm_size_t size, 66 int anywhere); 67 void vmspace_delete(struct vmspace *vs, caddr_t va, unsigned sz); 68 int vm_mmap(struct vmspace *vs, vm_offset_t *addr, vm_size_t size, 69 vm_prot_t prot, int flags, caddr_t handle, vm_offset_t foff); 70 int vmspace_protect(struct vmspace *vs, caddr_t va, unsigned sz, int set_max, 71 vm_prot_t new_prot); 72 int vmspace_access(struct vmspace *vs, caddr_t va, unsigned sz, int prot); 73 void vmspace_pageable(struct vmspace *vs, caddr_t va, unsigned sz); 74 void vmspace_notpageable(struct vmspace *vs, caddr_t va, unsigned sz); 75 int vmspace_inherit(struct vmspace *vs, caddr_t va, unsigned sz, 76 vm_inherit_t new_inheritance); 77 int vmspace_activate(struct vmspace *vs, caddr_t va, unsigned sz); 78 __END_DECLS 79 80 #endif VMSPACE_H 81