[apple/xnu.git] / osfmk / default_pager / default_pager.c

/*
 * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
 * 
 * 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. The rights granted to you under the License
 * may not be used to create, or enable the creation or redistribution of,
 * unlawful or unlicensed copies of an Apple operating system, or to
 * circumvent, violate, or enable the circumvention or violation of, any
 * terms of an Apple operating system software license agreement.
 * 
 * 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
 * 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.
 * 
 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
 */
/*
 * @OSF_COPYRIGHT@
 */
/* 
 * Mach Operating System
 * Copyright (c) 1991,1990,1989 Carnegie Mellon University
 * All Rights Reserved.
 * 
 * Permission to use, copy, modify and distribute this software and its
 * documentation is hereby granted, provided that both the copyright
 * notice and this permission notice appear in all copies of the
 * software, derivative works or modified versions, and any portions
 * thereof, and that both notices appear in supporting documentation.
 * 
 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
 * 
 * Carnegie Mellon requests users of this software to return to
 * 
 *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
 *  School of Computer Science
 *  Carnegie Mellon University
 *  Pittsburgh PA 15213-3890
 * 
 * any improvements or extensions that they make and grant Carnegie Mellon
 * the rights to redistribute these changes.
 */

/*
 * 	Default pager.
 * 		Threads management.
 *		Requests handling.
 */

#include "default_pager_internal.h"
#include <default_pager/default_pager_object_server.h>
#include <kern/host.h>
#include <kern/ledger.h>
#include <mach/host_info.h>
#include <mach/host_priv.h>
#include <mach/vm_map.h>
#include <ipc/ipc_space.h>
#include <vm/vm_kern.h>
#include <vm/vm_map.h>
#include <vm/vm_protos.h>

char	my_name[] = "(default pager): ";

#if	DEFAULT_PAGER_DEBUG
int	debug_mask = 0;
#endif	/* DEFAULT_PAGER_DEBUG */

/*
 * Use 16 Kbyte stacks instead of the default 64K.
 * Use 4 Kbyte waiting stacks instead of the default 8K.
 */

vm_size_t	cthread_stack_size = 16 *1024;
extern vm_size_t cthread_wait_stack_size;

unsigned long long	vm_page_mask;
int		vm_page_shift;

int 		norma_mk;

boolean_t	verbose;

/* task_t default_pager_self; */	/* Our task port. */
mutex_t			dpt_lock;       /* lock for the dpt array struct */
default_pager_thread_t	**dpt_array;

memory_object_default_t default_pager_object; /* for memory_object_create. */

MACH_PORT_FACE default_pager_default_set; /* Port set for "default" thread. */
MACH_PORT_FACE default_pager_internal_set; /* Port set for internal objects. */
MACH_PORT_FACE default_pager_external_set; /* Port set for external objects. */

#define DEFAULT_PAGER_INTERNAL_COUNT	(4)


/* Memory created by default_pager_object_create should mostly be resident. */
#define DEFAULT_PAGER_EXTERNAL_COUNT	(2)

int	default_pager_internal_count = DEFAULT_PAGER_INTERNAL_COUNT;
/* Number of "internal" threads. */
int	default_pager_external_count = DEFAULT_PAGER_EXTERNAL_COUNT;
/* Number of "external" threads. */

/*
 * Forward declarations.
 */
boolean_t default_pager_notify_server(mach_msg_header_t *,
				      mach_msg_header_t *);
boolean_t default_pager_demux_object(mach_msg_header_t *,
				     mach_msg_header_t *);
boolean_t default_pager_demux_default(mach_msg_header_t *,
				      mach_msg_header_t *);
default_pager_thread_t *start_default_pager_thread(int, boolean_t);
void	default_pager(void);
void	default_pager_thread(void *);
void	default_pager_initialize(void);
boolean_t	dp_parse_argument(char *);	/* forward; */
unsigned int	d_to_i(char *);			/* forward; */
boolean_t       strprefix(register const char *s1, register const char *s2);


extern int vstruct_def_clshift;


/*
 * Initialize and Run the default pager
 */
void
default_pager(void)
{
	int			i, id;
	__unused static char here[] = "default_pager";
	default_pager_thread_t	dpt;
	kern_return_t kr;


	/*
	 * Give me space for the thread array and zero it.
	 */
	i = default_pager_internal_count + default_pager_external_count + 1;
	dpt_array = (default_pager_thread_t **)
	    kalloc(i * sizeof(default_pager_thread_t *));
	memset(dpt_array, 0, i * sizeof(default_pager_thread_t *));

	/* Setup my thread structure.  */
	id = 0;
	dpt.dpt_buffer = 0;
	dpt.dpt_internal = FALSE;
	dpt.dpt_initialized_p = TRUE;
	dpt_array[0] = &dpt;

	/*
	 * Now we create the threads that will actually
	 * manage objects.
	 */

	for (i = 0; i < default_pager_internal_count; i++) {
		dpt_array[id] = (default_pager_thread_t *)
				kalloc(sizeof (default_pager_thread_t));
		if (dpt_array[id] == NULL)
	 		Panic("alloc pager thread");
		kr = vm_allocate(kernel_map, &((dpt_array[id])->dpt_buffer),
				 vm_page_size << vstruct_def_clshift, VM_FLAGS_ANYWHERE);
		if (kr != KERN_SUCCESS)
			Panic("alloc thread buffer");
		kr = vm_map_wire(kernel_map, (dpt_array[id])->dpt_buffer, 
			((dpt_array[id])->dpt_buffer)
					+(vm_page_size << vstruct_def_clshift), 
			VM_PROT_DEFAULT,
			FALSE);
		if (kr != KERN_SUCCESS)
			Panic("wire thread buffer");
		(dpt_array[id])->dpt_internal = TRUE;
		(dpt_array[id])->dpt_initialized_p = TRUE;
		(dpt_array[id])->checked_out = FALSE;
		id++;
	}
	DPT_LOCK_INIT(dpt_lock);
}


/* simple utility: only works for 2^n */
int
local_log2(
	unsigned int n)
{
	register int	i = 0;

	if(n == 0) return 0;

	while ((n & 1) == 0) {
		i++;
		n >>= 1;
	}
	return i;
}


/* another simple utility, d_to_i(char*) supporting only decimal
 * and devoid of range checking; obscure name chosen deliberately
 * to avoid confusion with semantic-rich POSIX routines */
unsigned int
d_to_i(char * arg)
{
    unsigned int rval = 0;
    char ch;

    while ((ch = *arg++) && ch >= '0' && ch <= '9') {
	rval *= 10;
	rval += ch - '0';
    }
    return(rval);
}


/*
 * Check for non-disk-partition arguments of the form
 *	attribute=argument
 * returning TRUE if one if found
 */
boolean_t dp_parse_argument(char *av)
{
	char *rhs = av;
	__unused static char	here[] = "dp_parse_argument";

	/* Check for '-v' flag */

	if (av[0] == '-' && av[1] == 'v' && av[2] == 0) {
		verbose = TRUE ;
		return TRUE;
	}

	/*
	 * If we find a '=' followed by an argument in the string,
	 * check for known arguments
	 */
	while (*rhs && *rhs != '=')
		rhs++;
	if (*rhs && *++rhs) {
		/* clsize=N pages */
		if (strprefix(av,"cl")) {
			if (!bs_set_default_clsize(d_to_i(rhs)))
				dprintf(("Bad argument (%s) - ignored\n", av));
			return(TRUE);
		}
		/* else if strprefix(av,"another_argument")) {
			handle_another_argument(av);
			return(TRUE);
		} */
	}
	return(FALSE);
}

int
start_def_pager( __unused char *bs_device )
{
/*
	MACH_PORT_FACE		master_device_port;
*/
/*
	MACH_PORT_FACE		security_port;
	MACH_PORT_FACE		root_ledger_wired;
	MACH_PORT_FACE		root_ledger_paged;
*/
	__unused static char here[] = "main";


/*
	default_pager_host_port = ipc_port_make_send(realhost.host_priv_self);
	master_device_port = ipc_port_make_send(master_device_port);
	root_ledger_wired = ipc_port_make_send(root_wired_ledger_port);
	root_ledger_paged = ipc_port_make_send(root_paged_ledger_port);
	security_port = ipc_port_make_send(realhost.host_security_self);
*/


#if NORMA_VM
	norma_mk = 1;
#else
	norma_mk = 0;
#endif


	/* setup read buffers, etc */
	default_pager_initialize();
	default_pager();
	
	/* start the backing store monitor, it runs on a callout thread */
	default_pager_backing_store_monitor_callout = 
		thread_call_allocate(default_pager_backing_store_monitor, NULL);
	if (!default_pager_backing_store_monitor_callout)
		panic("can't start backing store monitor thread");
	thread_call_enter(default_pager_backing_store_monitor_callout);
	
	return (0);
}

/*
 * Return TRUE if string 2 is a prefix of string 1.
 */     
boolean_t       
strprefix(register const char *s1, register const char *s2)
{               
        register int    c;
                
        while ((c = *s2++) != '\0') {
            if (c != *s1++) 
                return (FALSE);
        }       
        return (TRUE);
}


kern_return_t
default_pager_info(
	memory_object_default_t	pager,
	default_pager_info_t	*infop)
{
	vm_size_t	pages_total, pages_free;

	if (pager != default_pager_object)
		return KERN_INVALID_ARGUMENT; 

	bs_global_info(&pages_total, &pages_free);

	infop->dpi_total_space = ptoa_32(pages_total);
	infop->dpi_free_space = ptoa_32(pages_free);
	infop->dpi_page_size = vm_page_size;

	return KERN_SUCCESS;
}


kern_return_t
default_pager_info_64(
	memory_object_default_t	pager,
	default_pager_info_64_t	*infop)
{
	vm_size_t	pages_total, pages_free;

	if (pager != default_pager_object)
		return KERN_INVALID_ARGUMENT; 

	bs_global_info(&pages_total, &pages_free);

	infop->dpi_total_space = ptoa_64(pages_total);
	infop->dpi_free_space = ptoa_64(pages_free);
	infop->dpi_page_size = vm_page_size;
	infop->dpi_flags = 0;
	if (dp_encryption_inited && dp_encryption == TRUE) {
		infop->dpi_flags |= DPI_ENCRYPTED;
	}

	return KERN_SUCCESS;
}


void
default_pager_initialize()
{
	kern_return_t		kr;
	__unused static char	here[] = "default_pager_initialize";


	/*
	 * Vm variables.
	 */
	vm_page_mask = vm_page_size - 1;
	vm_page_shift = local_log2(vm_page_size);

	/*
	 * List of all vstructs.
	 */
	vstruct_zone = zinit(sizeof(struct vstruct),
			     10000 * sizeof(struct vstruct),
			     8192, "vstruct zone");
	VSL_LOCK_INIT();
	queue_init(&vstruct_list.vsl_queue);
	vstruct_list.vsl_count = 0;

	VSTATS_LOCK_INIT(&global_stats.gs_lock);

	bs_initialize();

	/*
	 * Exported DMM port.
	 */
	default_pager_object = ipc_port_alloc_kernel();


	/*
	 * Export pager interfaces.
	 */
#ifdef	USER_PAGER
	if ((kr = netname_check_in(name_server_port, "UserPager",
				   default_pager_self,
				   default_pager_object))
	    != KERN_SUCCESS) {
		dprintf(("netname_check_in returned 0x%x\n", kr));
		exit(1);
	}
#else	/* USER_PAGER */
	{
		int clsize;
		memory_object_default_t dmm;

		dmm = default_pager_object;
		clsize = (vm_page_size << vstruct_def_clshift);
		kr = host_default_memory_manager(host_priv_self(), &dmm, clsize);
		if ((kr != KERN_SUCCESS) ||
		    (dmm != MEMORY_OBJECT_DEFAULT_NULL))
			Panic("default memory manager");

	}
#endif	/* USER_PAGER */


}
Commit	Line	Data
1c79356b	1	/*
91447636	2	* Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
1c79356b	3	*
8f6c56a5	4	* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
1c79356b	5	*
8f6c56a5 A	6	* This file contains Original Code and/or Modifications of Original Code
	7	* as defined in and that are subject to the Apple Public Source License
	8	* Version 2.0 (the 'License'). You may not use this file except in
	9	* compliance with the License. The rights granted to you under the License
	10	* may not be used to create, or enable the creation or redistribution of,
	11	* unlawful or unlicensed copies of an Apple operating system, or to
	12	* circumvent, violate, or enable the circumvention or violation of, any
	13	* terms of an Apple operating system software license agreement.
	14	*
	15	* Please obtain a copy of the License at
	16	* http://www.opensource.apple.com/apsl/ and read it before using this file.
	17	*
	18	* The Original Code and all software distributed under the License are
	19	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
	20	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	21	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
	22	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	23	* Please see the License for the specific language governing rights and
8ad349bb	24	* limitations under the License.
8f6c56a5 A	25	*
8f6c56a5 A	26	* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
1c79356b A	27	*/
	28	/*
	29	* @OSF_COPYRIGHT@
	30	*/
1c79356b A	31	/*
	32	* Mach Operating System
	33	* Copyright (c) 1991,1990,1989 Carnegie Mellon University
	34	* All Rights Reserved.
	35	*
	36	* Permission to use, copy, modify and distribute this software and its
	37	* documentation is hereby granted, provided that both the copyright
	38	* notice and this permission notice appear in all copies of the
	39	* software, derivative works or modified versions, and any portions
	40	* thereof, and that both notices appear in supporting documentation.
	41	*
	42	* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
	43	* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
	44	* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
	45	*
	46	* Carnegie Mellon requests users of this software to return to
	47	*
	48	* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
	49	* School of Computer Science
	50	* Carnegie Mellon University
	51	* Pittsburgh PA 15213-3890
	52	*
	53	* any improvements or extensions that they make and grant Carnegie Mellon
	54	* the rights to redistribute these changes.
	55	*/
	56
	57	/*
	58	* Default pager.
	59	* Threads management.
	60	* Requests handling.
	61	*/
	62
	63	#include "default_pager_internal.h"
91447636	64	#include <default_pager/default_pager_object_server.h>
1c79356b A	65	#include <kern/host.h>
	66	#include <kern/ledger.h>
	67	#include <mach/host_info.h>
91447636 A	68	#include <mach/host_priv.h>
91447636 A	69	#include <mach/vm_map.h>
1c79356b A	70	#include <ipc/ipc_space.h>
1c79356b A	71	#include <vm/vm_kern.h>
91447636 A	72	#include <vm/vm_map.h>
91447636 A	73	#include <vm/vm_protos.h>
1c79356b A	74
	75	char my_name[] = "(default pager): ";
	76
	77	#if DEFAULT_PAGER_DEBUG
	78	int debug_mask = 0;
	79	#endif /* DEFAULT_PAGER_DEBUG */
	80
	81	/*
	82	* Use 16 Kbyte stacks instead of the default 64K.
	83	* Use 4 Kbyte waiting stacks instead of the default 8K.
	84	*/
	85
	86	vm_size_t cthread_stack_size = 16 *1024;
	87	extern vm_size_t cthread_wait_stack_size;
	88
	89	unsigned long long vm_page_mask;
	90	int vm_page_shift;
	91
	92	int norma_mk;
	93
	94	boolean_t verbose;
	95
	96	/* task_t default_pager_self; / / Our task port. */
	97	mutex_t dpt_lock; /* lock for the dpt array struct */
	98	default_pager_thread_t **dpt_array;
	99
0b4e3aa0 A	100	memory_object_default_t default_pager_object; /* for memory_object_create. */
0b4e3aa0 A	101
1c79356b	102	MACH_PORT_FACE default_pager_default_set; /* Port set for "default" thread. */
1c79356b A	103	MACH_PORT_FACE default_pager_internal_set; /* Port set for internal objects. */
	104	MACH_PORT_FACE default_pager_external_set; /* Port set for external objects. */
	105
	106	#define DEFAULT_PAGER_INTERNAL_COUNT (4)
	107
	108
	109	/* Memory created by default_pager_object_create should mostly be resident. */
	110	#define DEFAULT_PAGER_EXTERNAL_COUNT (2)
	111
91447636	112	int default_pager_internal_count = DEFAULT_PAGER_INTERNAL_COUNT;
1c79356b	113	/* Number of "internal" threads. */
91447636	114	int default_pager_external_count = DEFAULT_PAGER_EXTERNAL_COUNT;
1c79356b A	115	/* Number of "external" threads. */
	116
	117	/*
	118	* Forward declarations.
	119	*/
	120	boolean_t default_pager_notify_server(mach_msg_header_t *,
	121	mach_msg_header_t *);
	122	boolean_t default_pager_demux_object(mach_msg_header_t *,
	123	mach_msg_header_t *);
	124	boolean_t default_pager_demux_default(mach_msg_header_t *,
	125	mach_msg_header_t *);
	126	default_pager_thread_t *start_default_pager_thread(int, boolean_t);
	127	void default_pager(void);
	128	void default_pager_thread(void *);
	129	void default_pager_initialize(void);
1c79356b A	130	boolean_t dp_parse_argument(char ); / forward; */
1c79356b A	131	unsigned int d_to_i(char ); / forward; */
91447636	132	boolean_t strprefix(register const char s1, register const char s2);
1c79356b A	133
	134
	135	extern int vstruct_def_clshift;
	136
	137
	138	/*
	139	* Initialize and Run the default pager
	140	*/
	141	void
	142	default_pager(void)
	143	{
	144	int i, id;
91447636	145	__unused static char here[] = "default_pager";
1c79356b A	146	default_pager_thread_t dpt;
	147	kern_return_t kr;
	148
	149
	150
	151	/*
	152	* Give me space for the thread array and zero it.
	153	*/
	154	i = default_pager_internal_count + default_pager_external_count + 1;
	155	dpt_array = (default_pager_thread_t **)
	156	kalloc(i * sizeof(default_pager_thread_t *));
	157	memset(dpt_array, 0, i * sizeof(default_pager_thread_t *));
	158
	159	/* Setup my thread structure. */
	160	id = 0;
	161	dpt.dpt_buffer = 0;
	162	dpt.dpt_internal = FALSE;
	163	dpt.dpt_initialized_p = TRUE;
	164	dpt_array[0] = &dpt;
	165
	166	/*
	167	* Now we create the threads that will actually
	168	* manage objects.
	169	*/
	170
	171	for (i = 0; i < default_pager_internal_count; i++) {
	172	dpt_array[id] = (default_pager_thread_t *)
	173	kalloc(sizeof (default_pager_thread_t));
	174	if (dpt_array[id] == NULL)
	175	Panic("alloc pager thread");
	176	kr = vm_allocate(kernel_map, &((dpt_array[id])->dpt_buffer),
91447636	177	vm_page_size << vstruct_def_clshift, VM_FLAGS_ANYWHERE);
1c79356b A	178	if (kr != KERN_SUCCESS)
	179	Panic("alloc thread buffer");
	180	kr = vm_map_wire(kernel_map, (dpt_array[id])->dpt_buffer,
	181	((dpt_array[id])->dpt_buffer)
	182	+(vm_page_size << vstruct_def_clshift),
	183	VM_PROT_DEFAULT,
	184	FALSE);
	185	if (kr != KERN_SUCCESS)
	186	Panic("wire thread buffer");
	187	(dpt_array[id])->dpt_internal = TRUE;
	188	(dpt_array[id])->dpt_initialized_p = TRUE;
	189	(dpt_array[id])->checked_out = FALSE;
	190	id++;
	191	}
	192	DPT_LOCK_INIT(dpt_lock);
	193	}
	194
	195
	196
	197
	198
	199
	200	/* simple utility: only works for 2^n */
	201	int
	202	local_log2(
	203	unsigned int n)
	204	{
	205	register int i = 0;
	206
	207	if(n == 0) return 0;
	208
	209	while ((n & 1) == 0) {
	210	i++;
	211	n >>= 1;
	212	}
	213	return i;
	214	}
	215
	216
	217
	218
	219	/* another simple utility, d_to_i(char*) supporting only decimal
	220	* and devoid of range checking; obscure name chosen deliberately
	221	* to avoid confusion with semantic-rich POSIX routines */
	222	unsigned int
	223	d_to_i(char * arg)
	224	{
	225	unsigned int rval = 0;
	226	char ch;
	227
	228	while ((ch = *arg++) && ch >= '0' && ch <= '9') {
	229	rval *= 10;
	230	rval += ch - '0';
	231	}
	232	return(rval);
	233	}
	234
	235
	236
	237
	238	/*
	239	* Check for non-disk-partition arguments of the form
	240	* attribute=argument
	241	* returning TRUE if one if found
242	*/
243	boolean_t dp_parse_argument(char *av)
244	{
245	char *rhs = av;
91447636	246	__unused static char here[] = "dp_parse_argument";
1c79356b A	247
	248	/* Check for '-v' flag */
	249
	250	if (av[0] == '-' && av[1] == 'v' && av[2] == 0) {
	251	verbose = TRUE ;
	252	return TRUE;
	253	}
	254
	255	/*
	256	* If we find a '=' followed by an argument in the string,
	257	* check for known arguments
	258	*/
	259	while (rhs && rhs != '=')
	260	rhs++;
	261	if (rhs && ++rhs) {
	262	/* clsize=N pages */
	263	if (strprefix(av,"cl")) {
	264	if (!bs_set_default_clsize(d_to_i(rhs)))
	265	dprintf(("Bad argument (%s) - ignored\n", av));
	266	return(TRUE);
	267	}
	268	/* else if strprefix(av,"another_argument")) {
	269	handle_another_argument(av);
	270	return(TRUE);
	271	} */
	272	}
	273	return(FALSE);
	274	}
	275
	276	int
91447636	277	start_def_pager( __unused char *bs_device )
1c79356b	278	{
1c79356b A	279	/*
	280	MACH_PORT_FACE master_device_port;
	281	*/
1c79356b	282	/*
55e303ae	283	MACH_PORT_FACE security_port;
1c79356b A	284	MACH_PORT_FACE root_ledger_wired;
	285	MACH_PORT_FACE root_ledger_paged;
	286	*/
91447636	287	__unused static char here[] = "main";
1c79356b A	288
	289
	290
	291	/*
	292	default_pager_host_port = ipc_port_make_send(realhost.host_priv_self);
	293	master_device_port = ipc_port_make_send(master_device_port);
	294	root_ledger_wired = ipc_port_make_send(root_wired_ledger_port);
	295	root_ledger_paged = ipc_port_make_send(root_paged_ledger_port);
1c79356b	296	security_port = ipc_port_make_send(realhost.host_security_self);
55e303ae	297	*/
1c79356b A	298
	299
	300	#if NORMA_VM
	301	norma_mk = 1;
	302	#else
	303	norma_mk = 0;
	304	#endif
	305
	306
	307	/* setup read buffers, etc */
	308	default_pager_initialize();
	309	default_pager();
55e303ae A	310
55e303ae A	311	/* start the backing store monitor, it runs on a callout thread */
91447636 A	312	default_pager_backing_store_monitor_callout =
	313	thread_call_allocate(default_pager_backing_store_monitor, NULL);
	314	if (!default_pager_backing_store_monitor_callout)
	315	panic("can't start backing store monitor thread");
	316	thread_call_enter(default_pager_backing_store_monitor_callout);
4452a7af A	317
4452a7af A	318	return (0);
1c79356b A	319	}
	320
	321	/*
	322	* Return TRUE if string 2 is a prefix of string 1.
	323	*/
	324	boolean_t
	325	strprefix(register const char s1, register const char s2)
	326	{
	327	register int c;
	328
	329	while ((c = *s2++) != '\0') {
	330	if (c != *s1++)
	331	return (FALSE);
	332	}
	333	return (TRUE);
	334	}
	335
	336
	337	kern_return_t
	338	default_pager_info(
0b4e3aa0	339	memory_object_default_t pager,
1c79356b A	340	default_pager_info_t *infop)
	341	{
	342	vm_size_t pages_total, pages_free;
	343
0b4e3aa0	344	if (pager != default_pager_object)
1c79356b A	345	return KERN_INVALID_ARGUMENT;
	346
	347	bs_global_info(&pages_total, &pages_free);
	348
55e303ae A	349	infop->dpi_total_space = ptoa_32(pages_total);
55e303ae A	350	infop->dpi_free_space = ptoa_32(pages_free);
1c79356b A	351	infop->dpi_page_size = vm_page_size;
	352
	353	return KERN_SUCCESS;
	354	}
	355
	356
91447636 A	357	kern_return_t
	358	default_pager_info_64(
	359	memory_object_default_t pager,
	360	default_pager_info_64_t *infop)
	361	{
	362	vm_size_t pages_total, pages_free;
	363
	364	if (pager != default_pager_object)
	365	return KERN_INVALID_ARGUMENT;
	366
	367	bs_global_info(&pages_total, &pages_free);
	368
	369	infop->dpi_total_space = ptoa_64(pages_total);
	370	infop->dpi_free_space = ptoa_64(pages_free);
	371	infop->dpi_page_size = vm_page_size;
	372	infop->dpi_flags = 0;
	373	if (dp_encryption_inited && dp_encryption == TRUE) {
	374	infop->dpi_flags \|= DPI_ENCRYPTED;
	375	}
	376
	377	return KERN_SUCCESS;
	378	}
	379
	380
1c79356b A	381	void
	382	default_pager_initialize()
	383	{
	384	kern_return_t kr;
91447636	385	__unused static char here[] = "default_pager_initialize";
1c79356b A	386
1c79356b A	387
0b4e3aa0 A	388	/*
	389	* Vm variables.
	390	*/
	391	vm_page_mask = vm_page_size - 1;
	392	vm_page_shift = local_log2(vm_page_size);
	393
	394	/*
	395	* List of all vstructs.
	396	*/
	397	vstruct_zone = zinit(sizeof(struct vstruct),
	398	10000 * sizeof(struct vstruct),
	399	8192, "vstruct zone");
	400	VSL_LOCK_INIT();
	401	queue_init(&vstruct_list.vsl_queue);
	402	vstruct_list.vsl_count = 0;
	403
	404	VSTATS_LOCK_INIT(&global_stats.gs_lock);
	405
	406	bs_initialize();
	407
1c79356b A	408	/*
	409	* Exported DMM port.
	410	*/
0b4e3aa0	411	default_pager_object = ipc_port_alloc_kernel();
1c79356b A	412
	413
	414	/*
	415	* Export pager interfaces.
	416	*/
	417	#ifdef USER_PAGER
	418	if ((kr = netname_check_in(name_server_port, "UserPager",
	419	default_pager_self,
0b4e3aa0	420	default_pager_object))
1c79356b A	421	!= KERN_SUCCESS) {
	422	dprintf(("netname_check_in returned 0x%x\n", kr));
	423	exit(1);
	424	}
	425	#else /* USER_PAGER */
	426	{
	427	int clsize;
0b4e3aa0	428	memory_object_default_t dmm;
1c79356b	429
0b4e3aa0	430	dmm = default_pager_object;
1c79356b	431	clsize = (vm_page_size << vstruct_def_clshift);
0b4e3aa0 A	432	kr = host_default_memory_manager(host_priv_self(), &dmm, clsize);
	433	if ((kr != KERN_SUCCESS) \|\|
	434	(dmm != MEMORY_OBJECT_DEFAULT_NULL))
1c79356b A	435	Panic("default memory manager");
	436
	437	}
	438	#endif /* USER_PAGER */
	439
	440
1c79356b A	441	}
1c79356b A	442