This file is the "meat" of the process address space capability. If you

would like other things added, just ask!!!  It might be pretty easy to add.

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;
+}