Aren
/
NetBSD
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
NetBSD/usr.bin/pmap/pmap.c

821 lines
23 KiB
C
Raw Blame History

/* $NetBSD: pmap.c,v 1.56 2020/11/04 01:37:55 chs Exp $ */
/*
* Copyright (c) 2002, 2003, 2020 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Andrew Brown.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#ifndef lint
__RCSID("$NetBSD: pmap.c,v 1.56 2020/11/04 01:37:55 chs Exp $");
#endif
#include <string.h>
#include <util.h>
#include "pmap.h"
#include "main.h"
static void dump_vm_anon(kvm_t *, struct vm_anon **, int);
static char *findname(kvm_t *, struct kbit *, struct kbit *, struct kbit *,
struct kbit *, struct kbit *);
static int search_cache(kvm_t *, struct vnode *, char **, char *, size_t);
/* when recursing, output is indented */
#define indent(n) ((n) * (recurse > 1 ? recurse - 1 : 0))
#define rwx (VM_PROT_READ | VM_PROT_WRITE | VM_PROT_EXECUTE)
int heapfound;
void
process_map(kvm_t *kd, struct kinfo_proc2 *proc,
struct kbit *vmspace, const char *thing)
{
struct kbit kbit, *vm_map = &kbit;
if (proc) {
heapfound = 0;
A(vmspace) = (u_long)proc->p_vmspace;
S(vmspace) = sizeof(struct vmspace);
thing = "proc->p_vmspace.vm_map";
} else if (S(vmspace) == (size_t)-1) {
heapfound = 0;
/* A(vmspace) set by caller */
S(vmspace) = sizeof(struct vmspace);
/* object identified by caller */
} else {
heapfound = 1; /* but really, do kernels have a heap? */
A(vmspace) = 0;
S(vmspace) = 0;
thing = "kernel_map";
}
S(vm_map) = sizeof(struct vm_map);
if (S(vmspace) != 0) {
KDEREF(kd, vmspace);
A(vm_map) = A(vmspace) + offsetof(struct vmspace, vm_map);
memcpy(D(vm_map, vm_map), &D(vmspace, vmspace)->vm_map,
S(vm_map));
} else {
memset(vmspace, 0, sizeof(*vmspace));
A(vm_map) = kernel_map_addr;
KDEREF(kd, vm_map);
}
dump_vm_map(kd, proc, vmspace, vm_map, thing);
}
void
dump_vm_map(kvm_t *kd, struct kinfo_proc2 *proc,
struct kbit *vmspace, struct kbit *vm_map, const char *mname)
{
struct kbit kbit[2], *header, *vm_map_entry;
struct vm_map_entry *last, *next;
size_t total;
u_long addr, end;
if (S(vm_map) == (size_t)-1) {
heapfound = 1;
S(vm_map) = sizeof(struct vm_map);
KDEREF(kd, vm_map);
}
header = &kbit[0];
vm_map_entry = &kbit[1];
A(header) = 0;
A(vm_map_entry) = 0;
A(header) = A(vm_map) + offsetof(struct vm_map, header);
S(header) = sizeof(struct vm_map_entry);
memcpy(D(header, vm_map_entry), &D(vm_map, vm_map)->header, S(header));
if (S(vmspace) != 0 && (debug & PRINT_VMSPACE)) {
printf("proc->p_vmspace %p = {", P(vmspace));
printf(" vm_refcnt = %d,", D(vmspace, vmspace)->vm_refcnt);
printf(" vm_shm = %p,\n", D(vmspace, vmspace)->vm_shm);
printf(" vm_rssize = %d,", D(vmspace, vmspace)->vm_rssize);
printf(" vm_rssmax = %d,", D(vmspace, vmspace)->vm_rssmax);
printf(" vm_tsize = %d,", D(vmspace, vmspace)->vm_tsize);
printf(" vm_dsize = %d,\n", D(vmspace, vmspace)->vm_dsize);
printf(" vm_ssize = %d,", D(vmspace, vmspace)->vm_ssize);
printf(" vm_taddr = %p,", D(vmspace, vmspace)->vm_taddr);
printf(" vm_daddr = %p,\n", D(vmspace, vmspace)->vm_daddr);
printf(" vm_maxsaddr = %p,",
D(vmspace, vmspace)->vm_maxsaddr);
printf(" vm_minsaddr = %p,\n",
D(vmspace, vmspace)->vm_minsaddr);
printf(" vm_aslr_delta_mmap = %#zx }\n",
D(vmspace, vmspace)->vm_aslr_delta_mmap);
}
if (debug & PRINT_VM_MAP) {
printf("%*s%s %p = {", indent(2), "", mname, P(vm_map));
printf(" pmap = %p,\n", D(vm_map, vm_map)->pmap);
printf("%*s lock = <struct lock>,", indent(2), "");
printf(" header = <struct vm_map_entry>,");
printf(" nentries = %d,\n", D(vm_map, vm_map)->nentries);
printf("%*s size = %#"PRIxVSIZE",", indent(2), "",
D(vm_map, vm_map)->size);
printf(" ref_count = %d,", D(vm_map, vm_map)->ref_count);
printf("%*s hint = %p,", indent(2), "",
D(vm_map, vm_map)->hint);
printf("%*s first_free = %p,", indent(2), "",
D(vm_map, vm_map)->first_free);
printf(" flags = %#x <%s%s%s%s%s >,\n", D(vm_map, vm_map)->flags,
D(vm_map, vm_map)->flags & VM_MAP_PAGEABLE ? " PAGEABLE" : "",
D(vm_map, vm_map)->flags & VM_MAP_WIREFUTURE ? " WIREFUTURE" : "",
#ifdef VM_MAP_DYING
D(vm_map, vm_map)->flags & VM_MAP_DYING ? " DYING" :
#endif
"",
#ifdef VM_MAP_TOPDOWN
D(vm_map, vm_map)->flags & VM_MAP_TOPDOWN ? " TOPDOWN" :
#endif
"",
#ifdef VM_MAP_WANTVA
D(vm_map, vm_map)->flags & VM_MAP_WANTVA ? " WANTVA" :
#endif
"");
printf("%*s timestamp = %u }\n", indent(2), "",
D(vm_map, vm_map)->timestamp);
}
if (print_ddb) {
const char *name = mapname(P(vm_map));
printf("%*s%s %p: [%#"PRIxVADDR"->%#"PRIxVADDR"]\n", indent(2), "",
recurse < 2 ? "MAP" : "SUBMAP", P(vm_map),
vm_map_min(D(vm_map, vm_map)),
vm_map_max(D(vm_map, vm_map)));
printf("\t%*s#ent=%d, sz=%"PRIxVSIZE", ref=%d, version=%d, flags=%#x\n",
indent(2), "", D(vm_map, vm_map)->nentries,
D(vm_map, vm_map)->size, D(vm_map, vm_map)->ref_count,
D(vm_map, vm_map)->timestamp, D(vm_map, vm_map)->flags);
printf("\t%*spmap=%p(resident=<unknown>)\n", indent(2), "",
D(vm_map, vm_map)->pmap);
if (verbose && name != NULL)
printf("\t%*s([ %s ])\n", indent(2), "", name);
}
dump_vm_map_entry(kd, proc, vmspace, header, 1);
/*
* we're not recursing into a submap, so print headers
*/
if (recurse < 2) {
/* headers */
#ifdef DISABLED_HEADERS
if (print_map)
printf("%-*s %-*s rwx RWX CPY NCP I W A\n",
(int)sizeof(long) * 2 + 2, "Start",
(int)sizeof(long) * 2 + 2, "End");
if (print_maps)
printf("%-*s %-*s rwxp %-*s Dev Inode File\n",
(int)sizeof(long) * 2 + 0, "Start",
(int)sizeof(long) * 2 + 0, "End",
(int)sizeof(long) * 2 + 0, "Offset");
if (print_solaris)
printf("%-*s %*s Protection File\n",
(int)sizeof(long) * 2 + 0, "Start",
(int)sizeof(int) * 2 - 1, "Size ");
#endif
if (print_all)
printf("%-*s %-*s %*s %-*s rwxpc RWX I/W/A Dev %*s"
" - File\n",
(int)sizeof(long) * 2, "Start",
(int)sizeof(long) * 2, "End",
(int)sizeof(int) * 2, "Size ",
(int)sizeof(long) * 2, "Offset",
(int)sizeof(int) * 2, "Inode");
}
/* these are the "sub entries" */
total = 0;
next = D(header, vm_map_entry)->next;
last = P(header);
end = 0;
while (next != 0 && next != last) {
addr = (u_long)next;
A(vm_map_entry) = addr;
S(vm_map_entry) = sizeof(struct vm_map_entry);
KDEREF(kd, vm_map_entry);
next = D(vm_map_entry, vm_map_entry)->next;
if (end == 0)
end = D(vm_map_entry, vm_map_entry)->start;
else if (verbose > 1 &&
end != D(vm_map_entry, vm_map_entry)->start)
printf("%*s[%lu pages / %luK]\n", indent(2), "",
(D(vm_map_entry, vm_map_entry)->start - end) /
page_size,
(D(vm_map_entry, vm_map_entry)->start - end) /
1024);
total += dump_vm_map_entry(kd, proc, vmspace, vm_map_entry, 0);
end = D(vm_map_entry, vm_map_entry)->end;
}
/*
* we're not recursing into a submap, so print totals
*/
if (recurse < 2) {
if (print_solaris)
printf("%-*s %8luK\n",
(int)sizeof(void *) * 2 - 2, " total",
(unsigned long)total);
if (print_all)
printf("%-*s %9luk\n",
(int)sizeof(void *) * 4 - 1, " total",
(unsigned long)total);
}
}
size_t
dump_vm_map_entry(kvm_t *kd, struct kinfo_proc2 *proc, struct kbit *vmspace,
struct kbit *vm_map_entry, int ishead)
{
struct kbit kbit[3];
struct kbit *uvm_obj, *vp, *vfs;
struct vm_map_entry *vme;
size_t sz;
char *name;
dev_t dev;
ino_t inode;
if (S(vm_map_entry) == (size_t)-1) {
heapfound = 1;
S(vm_map_entry) = sizeof(struct vm_map_entry);
KDEREF(kd, vm_map_entry);
}
uvm_obj = &kbit[0];
vp = &kbit[1];
vfs = &kbit[2];
A(uvm_obj) = 0;
A(vp) = 0;
A(vfs) = 0;
vme = D(vm_map_entry, vm_map_entry);
if ((ishead && (debug & PRINT_VM_MAP_HEADER)) ||
(!ishead && (debug & PRINT_VM_MAP_ENTRY))) {
printf("%*s%s %p = {", indent(2), "",
ishead ? "vm_map.header" : "vm_map_entry",
P(vm_map_entry));
printf(" prev = %p,", vme->prev);
printf(" next = %p,\n", vme->next);
printf("%*s start = %#"PRIxVADDR",", indent(2), "", vme->start);
printf(" end = %#"PRIxVADDR",", vme->end);
printf(" object.uvm_obj/sub_map = %p,\n", vme->object.uvm_obj);
printf("%*s offset = %" PRIx64 ",", indent(2), "",
vme->offset);
printf(" etype = %#x <%s%s%s%s >,", vme->etype,
UVM_ET_ISOBJ(vme) ? " OBJ" : "",
UVM_ET_ISSUBMAP(vme) ? " SUBMAP" : "",
UVM_ET_ISCOPYONWRITE(vme) ? " COW" : "",
UVM_ET_ISNEEDSCOPY(vme) ? " NEEDSCOPY" : "");
printf(" protection = %#x,\n", vme->protection);
printf("%*s max_protection = %#x,", indent(2), "",
vme->max_protection);
printf(" inheritance = %d,", vme->inheritance);
printf(" wired_count = %d,\n", vme->wired_count);
printf("%*s aref = { ar_pageoff = %#x, ar_amap = %p },",
indent(2), "", vme->aref.ar_pageoff, vme->aref.ar_amap);
printf(" advice = %d,\n", vme->advice);
printf("%*s flags = %#x <%s%s%s > }\n", indent(2), "",
vme->flags,
vme->flags & UVM_MAP_KERNEL ? " KERNEL" : "",
vme->flags & UVM_MAP_STATIC ? " STATIC" : "",
vme->flags & UVM_MAP_NOMERGE ? " NOMERGE" : "");
}
if ((debug & PRINT_VM_AMAP) && (vme->aref.ar_amap != NULL)) {
struct kbit akbit, *amap;
amap = &akbit;
P(amap) = vme->aref.ar_amap;
S(amap) = sizeof(struct vm_amap);
KDEREF(kd, amap);
dump_amap(kd, amap);
}
if (ishead)
return (0);
A(vp) = 0;
A(uvm_obj) = 0;
if (vme->object.uvm_obj != NULL) {
P(uvm_obj) = vme->object.uvm_obj;
S(uvm_obj) = sizeof(struct uvm_object);
KDEREF(kd, uvm_obj);
if (UVM_ET_ISOBJ(vme) &&
UVM_OBJ_IS_VNODE(D(uvm_obj, uvm_object))) {
P(vp) = P(uvm_obj);
S(vp) = sizeof(struct vnode);
KDEREF(kd, vp);
}
}
A(vfs) = 0;
if (P(vp) != NULL && D(vp, vnode)->v_mount != NULL) {
P(vfs) = D(vp, vnode)->v_mount;
S(vfs) = sizeof(struct mount);
KDEREF(kd, vfs);
D(vp, vnode)->v_mount = D(vfs, mount);
}
/*
* dig out the device number and inode number from certain
* file system types.
*/
#define V_DATA_IS(vp, type, d, i) do { \
struct kbit data; \
P(&data) = D(vp, vnode)->v_data; \
S(&data) = sizeof(*D(&data, type)); \
KDEREF(kd, &data); \
dev = D(&data, type)->d; \
inode = D(&data, type)->i; \
} while (0/*CONSTCOND*/)
dev = 0;
inode = 0;
if (A(vp) &&
D(vp, vnode)->v_type == VREG &&
D(vp, vnode)->v_data != NULL) {
switch (D(vp, vnode)->v_tag) {
case VT_UFS:
case VT_LFS:
case VT_EXT2FS:
V_DATA_IS(vp, inode, i_dev, i_number);
break;
case VT_ISOFS:
V_DATA_IS(vp, iso_node, i_dev, i_number);
break;
default:
break;
}
}
name = findname(kd, vmspace, vm_map_entry, vp, vfs, uvm_obj);
if (print_map) {
printf("%*s%#"PRIxVADDR" %#"PRIxVADDR" %c%c%c %c%c%c %s %s %d %d %d",
indent(2), "",
vme->start, vme->end,
(vme->protection & VM_PROT_READ) ? 'r' : '-',
(vme->protection & VM_PROT_WRITE) ? 'w' : '-',
(vme->protection & VM_PROT_EXECUTE) ? 'x' : '-',
(vme->max_protection & VM_PROT_READ) ? 'r' : '-',
(vme->max_protection & VM_PROT_WRITE) ? 'w' : '-',
(vme->max_protection & VM_PROT_EXECUTE) ? 'x' : '-',
UVM_ET_ISCOPYONWRITE(vme) ? "COW" : "NCOW",
UVM_ET_ISNEEDSCOPY(vme) ? "NC" : "NNC",
vme->inheritance, vme->wired_count,
vme->advice);
if (verbose) {
if (inode)
printf(" %llu,%llu %llu",
(unsigned long long)major(dev),
(unsigned long long)minor(dev),
(unsigned long long)inode);
if (name[0])
printf(" %s", name);
}
printf("\n");
}
if (print_maps) {
printf("%*s%0*"PRIxVADDR"-%0*"PRIxVADDR" %c%c%c%c %0*" PRIx64 " %02llx:%02llx %llu %s\n",
indent(2), "",
(int)sizeof(void *) * 2, vme->start,
(int)sizeof(void *) * 2, vme->end,
(vme->protection & VM_PROT_READ) ? 'r' : '-',
(vme->protection & VM_PROT_WRITE) ? 'w' : '-',
(vme->protection & VM_PROT_EXECUTE) ? 'x' : '-',
UVM_ET_ISCOPYONWRITE(vme) ? 'p' : 's',
(int)sizeof(void *) * 2,
vme->offset,
(unsigned long long)major(dev),
(unsigned long long)minor(dev),
(unsigned long long)inode,
(name[0] != ' ') || verbose ? name : "");
}
if (print_ddb) {
printf("%*s - %p: %#"PRIxVADDR"->%#"PRIxVADDR": obj=%p/%#" PRIx64 ", amap=%p/%d\n",
indent(2), "",
P(vm_map_entry), vme->start, vme->end,
vme->object.uvm_obj, vme->offset,
vme->aref.ar_amap, vme->aref.ar_pageoff);
printf("\t%*ssubmap=%c, cow=%c, nc=%c, prot(max)=%d/%d, inh=%d, "
"wc=%d, adv=%d\n",
indent(2), "",
UVM_ET_ISSUBMAP(vme) ? 'T' : 'F',
UVM_ET_ISCOPYONWRITE(vme) ? 'T' : 'F',
UVM_ET_ISNEEDSCOPY(vme) ? 'T' : 'F',
vme->protection, vme->max_protection,
vme->inheritance, vme->wired_count, vme->advice);
if (verbose) {
printf("\t%*s", indent(2), "");
if (inode)
printf("(dev=%llu,%llu ino=%llu [%s] [%p])\n",
(unsigned long long)major(dev),
(unsigned long long)minor(dev),
(unsigned long long)inode, name, P(vp));
else if (name[0] == ' ')
printf("(%s)\n", &name[2]);
else
printf("(%s)\n", name);
}
}
sz = 0;
if (print_solaris) {
char prot[30];
prot[0] = '\0';
prot[1] = '\0';
if (vme->protection & VM_PROT_READ)
strlcat(prot, "/read", sizeof(prot));
if (vme->protection & VM_PROT_WRITE)
strlcat(prot, "/write", sizeof(prot));
if (vme->protection & VM_PROT_EXECUTE)
strlcat(prot, "/exec", sizeof(prot));
sz = (size_t)((vme->end - vme->start) / 1024);
printf("%*s%0*lX %6luK %-15s %s\n",
indent(2), "",
(int)sizeof(void *) * 2,
(unsigned long)vme->start,
(unsigned long)sz,
&prot[1],
name);
}
if (print_all) {
sz = (size_t)((vme->end - vme->start) / 1024);
printf("%*s%0*"PRIxVADDR"-%0*"PRIxVADDR" %7luk %0*" PRIx64 " %c%c%c%c%c (%c%c%c) %d/%d/%d %02llu:%02llu %7llu - %s\n",
indent(2), "",
(int)sizeof(void *) * 2,
vme->start,
(int)sizeof(void *) * 2,
vme->end - (vme->start != vme->end ? 1 : 0),
(unsigned long)sz,
(int)sizeof(void *) * 2,
vme->offset,
(vme->protection & VM_PROT_READ) ? 'r' : '-',
(vme->protection & VM_PROT_WRITE) ? 'w' : '-',
(vme->protection & VM_PROT_EXECUTE) ? 'x' : '-',
UVM_ET_ISCOPYONWRITE(vme) ? 'p' : 's',
UVM_ET_ISNEEDSCOPY(vme) ? '+' : '-',
(vme->max_protection & VM_PROT_READ) ? 'r' : '-',
(vme->max_protection & VM_PROT_WRITE) ? 'w' : '-',
(vme->max_protection & VM_PROT_EXECUTE) ? 'x' : '-',
vme->inheritance,
vme->wired_count,
vme->advice,
(unsigned long long)major(dev),
(unsigned long long)minor(dev),
(unsigned long long)inode,
name);
}
/* no access allowed, don't count space */
if ((vme->protection & rwx) == 0)
sz = 0;
if (recurse && UVM_ET_ISSUBMAP(vme)) {
struct kbit mkbit, *submap;
recurse++;
submap = &mkbit;
P(submap) = vme->object.sub_map;
S(submap) = sizeof(*vme->object.sub_map);
KDEREF(kd, submap);
dump_vm_map(kd, proc, vmspace, submap, "submap");
recurse--;
}
return (sz);
}
void
dump_amap(kvm_t *kd, struct kbit *amap)
{
struct vm_anon **am_anon;
int *am_slots;
int *am_bckptr;
int *am_ppref;
size_t l;
int i, r, e;
if (S(amap) == (size_t)-1) {
heapfound = 1;
S(amap) = sizeof(struct vm_amap);
KDEREF(kd, amap);
}
printf("%*s amap %p = { am_ref = %d, "
"am_flags = %#x,\n"
"%*s am_maxslot = %d, am_nslot = %d, am_nused = %d, "
"am_slots = %p,\n"
"%*s am_bckptr = %p, am_anon = %p, am_ppref = %p }\n",
indent(2), "",
P(amap),
D(amap, amap)->am_ref,
D(amap, amap)->am_flags,
indent(2), "",
D(amap, amap)->am_maxslot,
D(amap, amap)->am_nslot,
D(amap, amap)->am_nused,
D(amap, amap)->am_slots,
indent(2), "",
D(amap, amap)->am_bckptr,
D(amap, amap)->am_anon,
D(amap, amap)->am_ppref);
if (!(debug & DUMP_VM_AMAP_DATA))
return;
/*
* Assume that sizeof(struct vm_anon *) >= sizeof(size_t) and
* allocate that amount of space.
*/
am_anon = ecalloc(D(amap, amap)->am_maxslot, sizeof(*am_anon));
l = D(amap, amap)->am_maxslot * sizeof(*am_anon);
_KDEREF(kd, (u_long)D(amap, amap)->am_anon, am_anon, l);
l = D(amap, amap)->am_maxslot * sizeof(*am_bckptr);
am_bckptr = ecalloc(D(amap, amap)->am_maxslot, sizeof(*am_bckptr));
_KDEREF(kd, (u_long)D(amap, amap)->am_bckptr, am_bckptr, l);
l = D(amap, amap)->am_maxslot * sizeof(*am_slots);
am_slots = ecalloc(D(amap, amap)->am_maxslot, sizeof(*am_slots));
_KDEREF(kd, (u_long)D(amap, amap)->am_slots, am_slots, l);
if (D(amap, amap)->am_ppref != NULL &&
D(amap, amap)->am_ppref != PPREF_NONE) {
am_ppref = ecalloc(
D(amap, amap)->am_maxslot, sizeof(*am_ppref));
l = D(amap, amap)->am_maxslot * sizeof(*am_ppref);
_KDEREF(kd, (u_long)D(amap, amap)->am_ppref, am_ppref, l);
} else {
am_ppref = NULL;
}
printf(" page# %9s %8s", "am_bckptr", "am_slots");
if (am_ppref)
printf(" %8s ", "am_ppref");
printf(" %10s\n", "am_anon");
l = r = 0;
e = verbose > 1 ? D(amap, amap)->am_maxslot : D(amap, amap)->am_nslot;
for (i = 0; i < e; i++) {
printf(" %4lx", (unsigned long)i);
if (am_anon[i] || verbose > 1)
printf(" %8x", am_bckptr[i]);
else
printf(" %8s", "-");
if (i < D(amap, amap)->am_nused || verbose > 1)
printf(" %8x", am_slots[i]);
else
printf(" %8s", "-");
if (am_ppref) {
if (l == 0 || r || verbose > 1)
printf(" %8d", am_ppref[i]);
else
printf(" %8s", "-");
r = 0;
if (l == 0) {
if (am_ppref[i] > 0) {
r = am_ppref[i] - 1;
l = 1;
} else {
r = -am_ppref[i] - 1;
l = am_ppref[i + 1];
}
printf(" (%4ld @ %4ld)", (long)l, (long)r);
r = (l > 1) ? 1 : 0;
}
else
printf(" ");
l--;
}
dump_vm_anon(kd, am_anon, i);
}
free(am_anon);
free(am_bckptr);
free(am_slots);
if (am_ppref)
free(am_ppref);
}
static void
dump_vm_anon(kvm_t *kd, struct vm_anon **alist, int i)
{
printf(" %10p", alist[i]);
if (debug & PRINT_VM_ANON) {
struct kbit kbit, *anon = &kbit;
A(anon) = (u_long)alist[i];
S(anon) = sizeof(struct vm_anon);
if (A(anon) == 0) {
printf(" = { }\n");
return;
}
else
KDEREF(kd, anon);
printf(" = { an_ref = %"PRIuPTR", an_page = %p, an_swslot = %d }",
D(anon, anon)->an_ref, D(anon, anon)->an_page,
D(anon, anon)->an_swslot);
}
printf("\n");
}
static char*
findname(kvm_t *kd, struct kbit *vmspace,
struct kbit *vm_map_entry, struct kbit *vp,
struct kbit *vfs, struct kbit *uvm_obj)
{
static char buf[1024], *name;
struct vm_map_entry *vme;
size_t l;
int rv;
vme = D(vm_map_entry, vm_map_entry);
if (UVM_ET_ISOBJ(vme)) {
if (A(vfs)) {
l = (unsigned)strlen(D(vfs, mount)->mnt_stat.f_mntonname);
rv = search_cache(kd, P(vp), &name, buf, sizeof(buf));
switch (rv) {
case 0: /* found something */
name--;
*name = '/';
/*FALLTHROUGH*/
case 2: /* found nothing */
name -= 5;
memcpy(name, " -?- ", (size_t)5);
name -= l;
memcpy(name,
D(vfs, mount)->mnt_stat.f_mntonname, l);
break;
case 1: /* all is well */
name--;
*name = '/';
if (l != 1) {
name -= l;
memcpy(name,
D(vfs, mount)->mnt_stat.f_mntonname, l);
}
break;
}
}
else if (UVM_OBJ_IS_DEVICE(D(uvm_obj, uvm_object))) {
struct kbit kdev;
dev_t dev;
P(&kdev) = P(uvm_obj);
S(&kdev) = sizeof(struct uvm_device);
KDEREF(kd, &kdev);
dev = D(&kdev, uvm_device)->u_device;
name = devname(dev, S_IFCHR);
if (name != NULL)
snprintf(buf, sizeof(buf), "/dev/%s", name);
else
snprintf(buf, sizeof(buf), " [ device %llu,%llu ]",
(unsigned long long)major(dev),
(unsigned long long)minor(dev));
name = buf;
}
else if (UVM_OBJ_IS_AOBJ(D(uvm_obj, uvm_object))) {
snprintf(buf, sizeof(buf), " [ uvm_aobj ]");
name = buf;
}
else if (UVM_OBJ_IS_UBCPAGER(D(uvm_obj, uvm_object))) {
snprintf(buf, sizeof(buf), " [ ubc_pager ]");
name = buf;
}
else if (UVM_OBJ_IS_VNODE(D(uvm_obj, uvm_object))) {
snprintf(buf, sizeof(buf), " [ ?VNODE? ]");
name = buf;
}
else {
snprintf(buf, sizeof(buf), " [ ?? %p ?? ]",
D(uvm_obj, uvm_object)->pgops);
name = buf;
}
}
else if ((char *)D(vmspace, vmspace)->vm_maxsaddr <=
(char *)vme->start &&
((char *)D(vmspace, vmspace)->vm_maxsaddr + (size_t)maxssiz) >=
(char *)vme->end) {
snprintf(buf, sizeof(buf), " [ stack ]");
name = buf;
}
else if (!heapfound &&
(vme->protection & rwx) == rwx &&
vme->start >= (u_long)D(vmspace, vmspace)->vm_daddr) {
heapfound = 1;
snprintf(buf, sizeof(buf), " [ heap ]");
name = buf;
}
else if (UVM_ET_ISSUBMAP(vme)) {
const char *sub = mapname(vme->object.sub_map);
snprintf(buf, sizeof(buf), " [ %s ]", sub ? sub : "(submap)");
name = buf;
}
else {
snprintf(buf, sizeof(buf), " [ anon ]");
name = buf;
}
return (name);
}
static int
search_cache(kvm_t *kd, struct vnode *vp, char **name, char *buf, size_t blen)
{
char *o, *e;
struct namecache nc;
struct vnode_impl vi;
u_long vip, ncp, ncp2;
vip = (u_long)vp;
e = &buf[blen - 1];
o = e;
ncp2 = 0;
do {
/* Pull down vnode_impl for vnode. */
_KDEREF(kd, vip, &vi, sizeof(vi));
/* From that, get first cached name for vnode. */
ncp = (u_long)vi.vi_nc_list.tqh_first;
if (ncp != 0 && ncp != ncp2) {
/* Pull down the cache entry. */
_KDEREF(kd, ncp, &nc, sizeof(nc));
/* Done if own parent or at the root. */
if ((u_long)nc.nc_dvp == vip ||
(vi.vi_vnode.v_vflag & VV_ROOT) != 0)
break;
/* Otherwise pull first NCHNAMLEN chars of name. */
if (o != e)
*(--o) = '/';
o -= MIN((size_t)nc.nc_nlen, NCHNAMLEN);
memcpy(o, nc.nc_name, (unsigned)nc.nc_nlen);
vip = (u_long)nc.nc_dvp;
ncp2 = ncp;
} else
break;
} while (1/*CONSTCOND*/);
*e = '\0';
*name = o;
if (e == o)
return (2);
return (vi.vi_vnode.v_vflag & VV_ROOT);
}
Reference in New Issue View Git Blame Copy Permalink