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pmap.h revision 1.11 
      1 /*	$NetBSD: pmap.h,v 1.11 2019/09/13 13:56:04 christos Exp $ */
      2 
      3 /*
      4  * Copyright (c) 2002, 2003 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Andrew Brown.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 /*
     33  * only pull in the headers once.  if we attempt to pull them in
     34  * again, we get namespace collisions on some structures, and we don't
     35  * want to redefine some of them since it will affect the layout of
     36  * the struct kbit.
     37  */
     38 #ifndef PMAP_HEADERS
     39 
     40 #include <err.h>
     41 #include <kvm.h>
     42 #include <stddef.h>
     43 #include <stdlib.h>
     44 
     45 #include <sys/types.h>
     46 #include <sys/param.h>
     47 #include <sys/time.h>
     48 #include <sys/vnode.h>
     49 #define __EXPOSE_MOUNT
     50 #include <sys/mount.h>
     51 #include <sys/uio.h>
     52 #define __NAMECACHE_PRIVATE
     53 #include <sys/namei.h>
     54 #include <sys/sysctl.h>
     55 
     56 #include <uvm/uvm.h>
     57 #include <uvm/uvm_device.h>
     58 
     59 #include <ufs/ufs/inode.h>
     60 #undef doff_t
     61 #undef IN_ACCESS
     62 #include <isofs/cd9660/iso.h>
     63 #include <isofs/cd9660/cd9660_node.h>
     64 
     65 #define PMAP_HEADERS
     66 #endif /* PMAP_HEADERS */
     67 
     68 /*
     69  * if the definition of the kbit structure (and the accessor macros)
     70  * is already established, don't redefine it.
     71  */
     72 #ifndef struct_kbit
     73 
     74 /*
     75  * stolen (and munged) from #include <uvm/uvm_object.h>
     76  */
     77 #define UVM_OBJ_IS_VNODE(uobj)    ((uobj)->pgops == uvm_vnodeops)
     78 #define UVM_OBJ_IS_AOBJ(uobj)     ((uobj)->pgops == aobj_pager)
     79 #define UVM_OBJ_IS_DEVICE(uobj)   ((uobj)->pgops == uvm_deviceops)
     80 #define UVM_OBJ_IS_UBCPAGER(uobj) ((uobj)->pgops == ubc_pager)
     81 
     82 /*
     83  * stolen from #include <uvm/uvm_amap.h>
     84  */
     85 #define PPREF_NONE ((int *) -1)
     86 
     87 /* the size of the object in the kernel */
     88 #define S(x)	((x)->k_size)
     89 /* the address of the object in kernel, two forms */
     90 #define A(x)	((x)->k_addr.k_addr_ul)
     91 #define P(x)	((x)->k_addr.k_addr_p)
     92 /* the data from the kernel */
     93 #define D(x,d)	(&((x)->k_data.d))
     94 
     95 /* suck the data from the kernel */
     96 #define _KDEREFOK(kd, addr, dst, sz) \
     97 	((size_t)kvm_read((kd), (addr), (dst), (sz)) == (size_t)(sz))
     98 #define _KDEREF(kd, addr, dst, sz) do { \
     99 	if (!_KDEREFOK((kd), (addr), (dst), (sz))) \
    100 		errx(1, "trying to read %lu (%s) bytes from %lx: %s", \
    101 		    (unsigned long)(sz), #sz, (addr), kvm_geterr(kd)); \
    102 } while (0/*CONSTCOND*/)
    103 
    104 /* suck the data using the structure */
    105 #define KDEREFOK(kd, item) _KDEREFOK((kd), A(item), D(item, data), S(item))
    106 #define KDEREF(kd, item) _KDEREF((kd), A(item), D(item, data), S(item))
    107 
    108 struct kbit {
    109 	/*
    110 	 * size of data chunk
    111 	 */
    112 	size_t k_size;
    113 
    114 	/*
    115 	 * something for printf() and something for kvm_read()
    116 	 */
    117 	union {
    118 		void *k_addr_p;
    119 		u_long k_addr_ul;
    120 	} k_addr;
    121 
    122 	/*
    123 	 * where we actually put the "stuff"
    124 	 */
    125 	union {
    126 		char data[1];
    127 		struct vmspace vmspace;
    128 		struct vm_map vm_map;
    129 		struct vm_map_entry vm_map_entry;
    130 		struct vnode vnode;
    131 		struct uvm_object uvm_object;
    132 		struct mount mount;
    133 		struct namecache namecache;
    134 		struct inode inode;
    135 		struct iso_node iso_node;
    136 		struct uvm_device uvm_device;
    137 		struct vm_amap amap;
    138 		struct vm_anon anon;
    139 	} k_data;
    140 };
    141 #define struct_kbit
    142 #endif /* struct_kbit */
    143 
    144 /*
    145  * this is the *actual* module interface
    146  */
    147 
    148 void process_map(kvm_t *, struct kinfo_proc2 *,
    149 				   struct kbit *, const char *);
    150 void dump_vm_map(kvm_t *, struct kinfo_proc2 *,
    151 				   struct kbit *, struct kbit *, const char *);
    152 size_t dump_vm_map_entry(kvm_t *, struct kinfo_proc2 *,
    153 					   struct kbit *, struct kbit *, int);
    154 void dump_amap(kvm_t *, struct kbit *);
    155