*
* @APPLE_LICENSE_HEADER_START@
*
- * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved.
+ * The contents of this file constitute Original Code as defined in and
+ * are subject to the Apple Public Source License Version 1.1 (the
+ * "License"). You may not use this file except in compliance with the
+ * License. Please obtain a copy of the License at
+ * http://www.apple.com/publicsource and read it before using this file.
*
- * This file contains Original Code and/or Modifications of Original Code
- * as defined in and that are subject to the Apple Public Source License
- * Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
- *
- * The Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * This Original Code and all software distributed under the License are
+ * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
- * limitations under the License.
+ * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
+ * License for the specific language governing rights and limitations
+ * under the License.
*
* @APPLE_LICENSE_HEADER_END@
*/
#define NeXTBSD 1995064 /* NeXTBSD version (year, month, release) */
#define NeXTBSD4_0 0 /* NeXTBSD 4.0 */
+#include <sys/_types.h>
+
#ifndef NULL
-#define NULL 0
-#endif
+#define NULL __DARWIN_NULL
+#endif /* ! NULL */
#ifndef LOCORE
#include <sys/types.h>
/* Machine type dependent parameters. */
#include <machine/param.h>
-#include <machine/limits.h>
/* More types and definitions used throughout the kernel. */
#ifdef KERNEL
+#include <machine/limits.h>
#include <sys/cdefs.h>
#include <sys/errno.h>
#include <sys/time.h>
#include <sys/resource.h>
#include <sys/ucred.h>
#include <sys/uio.h>
+#else
+#include <limits.h>
#endif
/* Signals. */
#define PRIMASK 0x0ff
#define PCATCH 0x100 /* OR'd with pri for tsleep to check signals */
#define PTTYBLOCK 0x200 /* for tty SIGTTOU and SIGTTIN blocking */
+#define PDROP 0x400 /* OR'd with pri to stop re-entry of interlock mutex */
#define NZERO 0 /* default "nice" */
/*
* File system parameters and macros.
*
- * The file system is made out of blocks of at most MAXBSIZE units, with
+ * The file system is made out of blocks of at most MAXPHYS units, with
* smaller units (fragments) only in the last direct block. MAXBSIZE
* primarily determines the size of buffers in the buffer pool. It may be
- * made larger without any effect on existing file systems; however making
- * it smaller make make some file systems unmountable.
+ * made larger than MAXPHYS without any effect on existing file systems;
+ * however making it smaller may make some file systems unmountable.
+ * We set this to track the value of (MAX_UPL_TRANSFER*PAGE_SIZE) from
+ * osfmk/mach/memory_object_types.h to bound it at the maximum UPL size.
*/
-#define MAXBSIZE MAXPHYS
+#define MAXBSIZE (256 * 4096)
#define MAXPHYSIO MAXPHYS
#define MAXFRAG 8
+#define MAXPHYSIO_WIRED (16 * 1024 * 1024)
+
/*
* MAXPATHLEN defines the longest permissable path length after expanding
* symbolic links. It is used to allocate a temporary buffer from the buffer