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/*
* Copyright (c) 1993 Jan-Simon Pendry
* Copyright (c) 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Jan-Simon Pendry.
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
*
* @(#)procfs_status.c 8.3 (Berkeley) 2/17/94
*
* $FreeBSD$
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/time.h>
#include <sys/kernel.h>
#include <sys/proc.h>
#include <sys/vnode.h>
#include <sys/ioctl.h>
#include <sys/tty.h>
#include <sys/resource.h>
#include <sys/resourcevar.h>
#include <miscfs/procfs/procfs.h>
#include <sys/queue.h>
#include <sys/vmmeter.h>
#include <sys/mman.h>
#include <sys/malloc.h>
#include <vm/vm.h>
#include <vm/vm_param.h>
#include <vm/vm_prot.h>
#include <vm/vm_inherit.h>
#include <vm/lock.h>
#include <vm/pmap.h>
#include <vm/vm_map.h>
#include <vm/vm_page.h>
#include <vm/vm_object.h>
#include <vm/vm_kern.h>
#include <vm/vm_pager.h>
#include <vm/vm_extern.h>
#include <vm/default_pager.h>
#define MEBUFFERSIZE 256
/*
* The map entries can *almost* be read with programs like cat. However,
* large maps need special programs to read. It is not easy to implement
* a program that can sense the required size of the buffer, and then
* subsequently do a read with the appropriate size. This operation cannot
* be atomic. The best that we can do is to allow the program to do a read
* with an arbitrarily large buffer, and return as much as we can. We can
* return an error code if the buffer is too small (EFBIG), then the program
* can try a bigger buffer.
*/
int
procfs_domap(curp, p, pfs, uio)
struct proc *curp;
struct proc *p;
struct pfsnode *pfs;
struct uio *uio;
{
int len;
int error;
vm_map_t map = &p->p_vmspace->vm_map;
pmap_t pmap = &p->p_vmspace->vm_pmap;
vm_map_entry_t entry;
char mebuffer[MEBUFFERSIZE];
if (uio->uio_rw != UIO_READ)
return (EOPNOTSUPP);
if (uio->uio_offset != 0)
return (0);
error = 0;
if (map != &curproc->p_vmspace->vm_map)
vm_map_lock(map);
for (entry = map->header.next;
((uio->uio_resid > 0) && (entry != &map->header));
entry = entry->next) {
vm_object_t obj, tobj, lobj;
vm_offset_t addr;
int resident, privateresident;
char *type;
if (entry->is_a_map || entry->is_sub_map)
continue;
obj = entry->object.vm_object;
if (obj && (obj->ref_count == 1))
privateresident = obj->resident_page_count;
else
privateresident = 0;
resident = 0;
addr = entry->start;
while (addr < entry->end) {
if (pmap_extract( pmap, addr))
resident++;
addr += PAGE_SIZE;
}
for( lobj = tobj = obj; tobj; tobj = tobj->backing_object)
lobj = tobj;
if (lobj) switch(lobj->type) {
default:
case OBJT_DEFAULT:
type = "default";
break;
case OBJT_VNODE:
type = "vnode";
break;
case OBJT_SWAP:
type = "swap";
break;
case OBJT_DEVICE:
type = "device";
break;
} else {
type = "none";
}
/*
* format:
* start, end, resident, private resident, cow, access, type.
*/
sprintf(mebuffer, "0x%-8.8x 0x%-8.8x %9d %9d %s%s%s %s %s\n",
entry->start, entry->end,
resident, privateresident,
(entry->protection & VM_PROT_READ)?"r":"-",
(entry->protection & VM_PROT_WRITE)?"w":"-",
(entry->protection & VM_PROT_EXECUTE)?"x":"-",
entry->copy_on_write?"COW":" ",
type);
len = strlen(mebuffer);
if (len > uio->uio_resid) {
error = EFBIG;
break;
}
error = uiomove(mebuffer, len, uio);
if (error)
break;
}
if (map != &curproc->p_vmspace->vm_map)
vm_map_unlock(map);
return error;
}
int
procfs_validmap(p)
struct proc *p;
{
return ((p->p_flag & P_SYSTEM) == 0);
}
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