142 lines
4.5 KiB
C
142 lines
4.5 KiB
C
/* $NetBSD: procfs_map.c,v 1.4 1999/03/24 05:51:27 mrg Exp $ */
|
|
|
|
/*
|
|
* 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: procfs_map.c,v 1.18 1998/12/04 22:54:51 archie Exp $
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/vnode.h>
|
|
#include <miscfs/procfs/procfs.h>
|
|
|
|
#include <vm/vm.h>
|
|
#include <vm/vm_prot.h>
|
|
#include <sys/lock.h>
|
|
#include <vm/pmap.h>
|
|
#include <vm/vm_map.h>
|
|
#include <vm/vm_page.h>
|
|
#include <vm/vm_object.h>
|
|
|
|
#include <uvm/uvm.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;
|
|
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_read(map);
|
|
for (entry = map->header.next;
|
|
((uio->uio_resid > 0) && (entry != &map->header));
|
|
entry = entry->next) {
|
|
|
|
if (UVM_ET_ISSUBMAP(entry))
|
|
continue;
|
|
|
|
/*
|
|
* format:
|
|
* start, end, resident, private resident, cow, access, type.
|
|
*/
|
|
snprintf(mebuffer, sizeof(mebuffer),
|
|
"0x%lx 0x%lx %c%c%c %c%c%c %s %s %d %d %d\n",
|
|
entry->start, entry->end,
|
|
|
|
(entry->protection & VM_PROT_READ) ? 'r' : '-',
|
|
(entry->protection & VM_PROT_WRITE) ? 'w' : '-',
|
|
(entry->protection & VM_PROT_EXECUTE) ? 'x' : '-',
|
|
(entry->max_protection & VM_PROT_READ) ? 'r' : '-',
|
|
(entry->max_protection & VM_PROT_WRITE) ? 'w' : '-',
|
|
(entry->max_protection & VM_PROT_EXECUTE) ? 'x' : '-',
|
|
|
|
(entry->etype & UVM_ET_COPYONWRITE) ? "COW" : "NCOW",
|
|
(entry->etype & UVM_ET_NEEDSCOPY) ? "NC" : "NNC",
|
|
entry->inheritance, entry->wired_count , entry->advice
|
|
);
|
|
|
|
|
|
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_read(map);
|
|
return error;
|
|
}
|
|
|
|
int
|
|
procfs_validmap(p)
|
|
struct proc *p;
|
|
{
|
|
return ((p->p_flag & P_SYSTEM) == 0);
|
|
}
|