diff options
Diffstat (limited to 'sys/fs/procfs')
| -rw-r--r-- | sys/fs/procfs/procfs_map.c | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/sys/fs/procfs/procfs_map.c b/sys/fs/procfs/procfs_map.c new file mode 100644 index 0000000..2117048 --- /dev/null +++ b/sys/fs/procfs/procfs_map.c @@ -0,0 +1,169 @@ +/* + * 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 + * + * $Id: procfs_status.c,v 1.5 1996/02/02 05:19:20 wosch Exp $ + */ + +#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 <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 MAXKBUFFER 16384 + +int +procfs_domap(curp, p, pfs, uio) + struct proc *curp; + struct proc *p; + struct pfsnode *pfs; + struct uio *uio; +{ + int len; + int error; + /* + * dynamically allocated buffer for entire snapshot + */ + char *kbuffer, *kbufferp; + /* + * buffer for each map entry + */ + char mebuffer[256]; + vm_map_t map = &p->p_vmspace->vm_map; + pmap_t pmap = &p->p_vmspace->vm_pmap; + vm_map_entry_t entry; + + if (uio->uio_rw != UIO_READ) + return (EOPNOTSUPP); + + if (uio->uio_offset != 0) + return (0); + + kbuffer = (char *)kmem_alloc_pageable(kernel_map, MAXKBUFFER); + kbufferp = kbuffer; + vm_map_lock(map); + for (entry = map->header.next; 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; + + 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; + } + + /* + * format: + * start, end, resident, private resident, cow, access, type. + */ + sprintf(mebuffer, "0x%-8.8x 0x%-8.8x %9d %9d %s %s %s\n", + entry->start, entry->end, + resident, privateresident, + (entry->protection & VM_PROT_WRITE)?"RW":"RO", + entry->copy_on_write?"COW":" ", + type); + + len = strlen(mebuffer); + if (len + (kbufferp - kbuffer) < MAXKBUFFER) { + memcpy(kbufferp, mebuffer, len); + kbufferp += len; + } + } + vm_map_unlock(map); + error = uiomove(kbuffer, (kbufferp - kbuffer), uio); + kmem_free(kernel_map, (vm_offset_t)kbuffer, MAXKBUFFER); + return error; +} |
