[apple/xnu.git] / bsd / sys / resource.h

/*
 * Copyright (c) 2000-2006 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@
 */
/* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
/*
 * Copyright (c) 1982, 1986, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * 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.
 *
 *	@(#)resource.h	8.2 (Berkeley) 1/4/94
 */

#ifndef _SYS_RESOURCE_H_
#define	_SYS_RESOURCE_H_

#include <sys/appleapiopts.h>
#include <sys/cdefs.h>
#include <sys/_types.h>


/* [XSI] The timeval structure shall be defined as described in
 * <sys/time.h>
 */
#define __need_struct_timeval
#include <sys/_structs.h>

/* The id_t type shall be defined as described in <sys/types.h> */
#ifndef _ID_T
#define _ID_T
typedef __darwin_id_t	id_t;		/* can hold pid_t, gid_t, or uid_t */
#endif


/*
 * Resource limit type (low 63 bits, excluding the sign bit)
 */
typedef __uint64_t	rlim_t;


/*****
 * PRIORITY
 */

/*
 * Possible values of the first parameter to getpriority()/setpriority(),
 * used to indicate the type of the second parameter.
 */
#define	PRIO_PROCESS	0		/* Second argument is a PID */
#define	PRIO_PGRP	1		/* Second argument is a GID */
#define	PRIO_USER	2		/* Second argument is a UID */

#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
#define	PRIO_DARWIN_THREAD	3		/* Second argument is always 0 (current thread) */

/*
 * Range limitations for the value of the third parameter to setpriority().
 */
#define	PRIO_MIN	-20
#define	PRIO_MAX	20

/* use PRIO_DARWIN_BG to set the current thread into "background" state
 * which lowers CPU, disk IO, and networking priorites until thread terminates
 * or "background" state is revoked
 */
#define PRIO_DARWIN_BG 0x1000

#endif	/* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */


/*****
 * RESOURCE USAGE
 */

/*
 * Possible values of the first parameter to getrusage(), used to indicate
 * the scope of the information to be returned.
 */
#define	RUSAGE_SELF	0		/* Current process information */
#define	RUSAGE_CHILDREN	-1		/* Current process' children */

/*
 * A structure representing an accounting of resource utilization.  The
 * address of an instance of this structure is the second parameter to
 * getrusage().
 *
 * Note: All values other than ru_utime and ru_stime are implementaiton
 *       defined and subject to change in a future release.  Their use
 *       is discouraged for standards compliant programs.
 */
struct	rusage {
	struct timeval ru_utime;	/* user time used (PL) */
	struct timeval ru_stime;	/* system time used (PL) */
#if defined(_POSIX_C_SOURCE) && !defined(_DARWIN_C_SOURCE)
	long	ru_opaque[14];		/* implementation defined */
#else	/* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */
	/*
	 * Informational aliases for source compatibility with programs
	 * that need more information than that provided by standards,
	 * and which do not mind being OS-dependent.
	 */
	long	ru_maxrss;		/* max resident set size (PL) */
#define	ru_first	ru_ixrss	/* internal: ruadd() range start */
	long	ru_ixrss;		/* integral shared memory size (NU) */
	long	ru_idrss;		/* integral unshared data (NU)  */
	long	ru_isrss;		/* integral unshared stack (NU) */
	long	ru_minflt;		/* page reclaims (NU) */
	long	ru_majflt;		/* page faults (NU) */
	long	ru_nswap;		/* swaps (NU) */
	long	ru_inblock;		/* block input operations (atomic) */
	long	ru_oublock;		/* block output operations (atomic) */
	long	ru_msgsnd;		/* messages sent (atomic) */
	long	ru_msgrcv;		/* messages received (atomic) */
	long	ru_nsignals;		/* signals received (atomic) */
	long	ru_nvcsw;		/* voluntary context switches (atomic) */
	long	ru_nivcsw;		/* involuntary " */
#define	ru_last		ru_nivcsw	/* internal: ruadd() range end */
#endif	/* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */
};


#ifdef KERNEL
#include <machine/types.h>	/* user_time_t */

/* LP64 version of struct timeval.  time_t is a long and must grow when 
 * we're dealing with a 64-bit process.
 * WARNING - keep in sync with struct timeval
 */

struct user_rusage_timeval {
	user_time_t		tv_sec;		/* seconds */
	__darwin_suseconds_t	tv_usec __attribute((aligned(8)));	/* and microseconds */
};	
struct	user_rusage {
	struct user_rusage_timeval ru_utime;	/* user time used */
	struct user_rusage_timeval ru_stime;	/* system time used */
	user_long_t	ru_maxrss;		/* max resident set size */
	user_long_t	ru_ixrss;		/* integral shared memory size */
	user_long_t	ru_idrss;		/* integral unshared data " */
	user_long_t	ru_isrss;		/* integral unshared stack " */
	user_long_t	ru_minflt;		/* page reclaims */
	user_long_t	ru_majflt;		/* page faults */
	user_long_t	ru_nswap;		/* swaps */
	user_long_t	ru_inblock;		/* block input operations */
	user_long_t	ru_oublock;		/* block output operations */
	user_long_t	ru_msgsnd;		/* messages sent */
	user_long_t	ru_msgrcv;		/* messages received */
	user_long_t	ru_nsignals;	/* signals received */
	user_long_t	ru_nvcsw;		/* voluntary context switches */
	user_long_t	ru_nivcsw;		/* involuntary " */
};

#endif // KERNEL


/*****
 * RESOURCE LIMITS
 */

/*
 * Symbolic constants for resource limits; since all limits are representable
 * as a type rlim_t, we are permitted to define RLIM_SAVED_* in terms of
 * RLIM_INFINITY.
 */
#define	RLIM_INFINITY	(((__uint64_t)1 << 63) - 1)	/* no limit */
#define	RLIM_SAVED_MAX	RLIM_INFINITY	/* Unrepresentable hard limit */
#define	RLIM_SAVED_CUR	RLIM_INFINITY	/* Unrepresentable soft limit */

/*
 * Possible values of the first parameter to getrlimit()/setrlimit(), to
 * indicate for which resource the operation is being performed.
 */
#define	RLIMIT_CPU	0		/* cpu time per process */
#define	RLIMIT_FSIZE	1		/* file size */
#define	RLIMIT_DATA	2		/* data segment size */
#define	RLIMIT_STACK	3		/* stack size */
#define	RLIMIT_CORE	4		/* core file size */
#define	RLIMIT_AS	5		/* address space (resident set size) */
#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
#define	RLIMIT_RSS	RLIMIT_AS	/* source compatibility alias */
#define	RLIMIT_MEMLOCK	6		/* locked-in-memory address space */
#define	RLIMIT_NPROC	7		/* number of processes */
#endif	/* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */
#define	RLIMIT_NOFILE	8		/* number of open files */
#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
#define	RLIM_NLIMITS	9		/* total number of resource limits */
#endif	/* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */
#define _RLIMIT_POSIX_FLAG	0x1000	/* Set bit for strict POSIX */

/*
 * A structure representing a resource limit.  The address of an instance
 * of this structure is the second parameter to getrlimit()/setrlimit().
 */
struct rlimit {
	rlim_t	rlim_cur;		/* current (soft) limit */
	rlim_t	rlim_max;		/* maximum value for rlim_cur */
};

#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
/* I/O type */
#define IOPOL_TYPE_DISK	0

/* scope */
#define IOPOL_SCOPE_PROCESS   0
#define IOPOL_SCOPE_THREAD    1

/* I/O Priority */
#define IOPOL_DEFAULT	0
#define IOPOL_NORMAL	1
#define IOPOL_PASSIVE	2
#define IOPOL_THROTTLE	3

#ifdef PRIVATE
/*
 * Structures for use in communicating via iopolicysys() between Lic and the
 * kernel.  Not to be used by uesr programs directly.
 */

/*
 * the command to iopolicysys()
 */
#define	IOPOL_CMD_GET		0x00000001	/* Get I/O policy */
#define	IOPOL_CMD_SET		0x00000002	/* Set I/O policy */

/*
 * Second parameter to iopolicysys()
 */
struct _iopol_param_t {
	int iop_scope;	/* current process or a thread */
	int iop_iotype;
	int iop_policy;
};

#endif	/* PRIVATE */
#endif /* !_POSIX_C_SOURCE || _DARWIN_C_SOURCE */

#ifndef KERNEL

__BEGIN_DECLS
int	getpriority(int, id_t);
#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
int	getiopolicy_np(int, int);
#endif /* !_POSIX_C_SOURCE || _DARWIN_C_SOURCE */
int	getrlimit(int, struct rlimit *) __DARWIN_ALIAS(getrlimit);
int	getrusage(int, struct rusage *);
int	setpriority(int, id_t, int);
#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
int	setiopolicy_np(int, int, int);
#endif /* !_POSIX_C_SOURCE || _DARWIN_C_SOURCE */
int	setrlimit(int, const struct rlimit *) __DARWIN_ALIAS(setrlimit);
__END_DECLS

#endif	/* !KERNEL */
#endif	/* !_SYS_RESOURCE_H_ */
Commit	Line	Data
1c79356b	1	/*
2d21ac55	2	* Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved.
5d5c5d0d	3	*
2d21ac55	4	* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
1c79356b	5	*
2d21ac55 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.
8f6c56a5	14	*
2d21ac55 A	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
8f6c56a5 A	20	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
8f6c56a5 A	21	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
2d21ac55 A	22	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	23	* Please see the License for the specific language governing rights and
	24	* limitations under the License.
8f6c56a5	25	*
2d21ac55	26	* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
1c79356b A	27	*/
	28	/* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
	29	/*
	30	* Copyright (c) 1982, 1986, 1993
	31	* The Regents of the University of California. All rights reserved.
	32	*
	33	* Redistribution and use in source and binary forms, with or without
	34	* modification, are permitted provided that the following conditions
	35	* are met:
	36	* 1. Redistributions of source code must retain the above copyright
	37	* notice, this list of conditions and the following disclaimer.
	38	* 2. Redistributions in binary form must reproduce the above copyright
	39	* notice, this list of conditions and the following disclaimer in the
	40	* documentation and/or other materials provided with the distribution.
	41	* 3. All advertising materials mentioning features or use of this software
	42	* must display the following acknowledgement:
	43	* This product includes software developed by the University of
	44	* California, Berkeley and its contributors.
	45	* 4. Neither the name of the University nor the names of its contributors
	46	* may be used to endorse or promote products derived from this software
	47	* without specific prior written permission.
	48	*
	49	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	50	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	51	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	52	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	53	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	54	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	55	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	56	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	57	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	58	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	59	* SUCH DAMAGE.
	60	*
	61	* @(#)resource.h 8.2 (Berkeley) 1/4/94
	62	*/
	63
	64	#ifndef _SYS_RESOURCE_H_
	65	#define _SYS_RESOURCE_H_
	66
9bccf70c	67	#include <sys/appleapiopts.h>
91447636 A	68	#include <sys/cdefs.h>
	69	#include <sys/_types.h>
	70
	71
	72	/* [XSI] The timeval structure shall be defined as described in
	73	* <sys/time.h>
91447636	74	*/
2d21ac55 A	75	#define __need_struct_timeval
2d21ac55 A	76	#include <sys/_structs.h>
91447636 A	77
	78	/* The id_t type shall be defined as described in <sys/types.h> */
	79	#ifndef _ID_T
	80	#define _ID_T
	81	typedef __darwin_id_t id_t; /* can hold pid_t, gid_t, or uid_t */
	82	#endif
	83
9bccf70c	84
1c79356b	85	/*
91447636 A	86	* Resource limit type (low 63 bits, excluding the sign bit)
91447636 A	87	*/
2d21ac55	88	typedef __uint64_t rlim_t;
91447636 A	89
	90
	91	/*****
	92	* PRIORITY
	93	*/
	94
	95	/*
	96	* Possible values of the first parameter to getpriority()/setpriority(),
	97	* used to indicate the type of the second parameter.
	98	*/
	99	#define PRIO_PROCESS 0 /* Second argument is a PID */
	100	#define PRIO_PGRP 1 /* Second argument is a GID */
	101	#define PRIO_USER 2 /* Second argument is a UID */
	102
2d21ac55 A	103	#if !defined(_POSIX_C_SOURCE) \|\| defined(_DARWIN_C_SOURCE)
	104	#define PRIO_DARWIN_THREAD 3 /* Second argument is always 0 (current thread) */
	105
91447636 A	106	/*
91447636 A	107	* Range limitations for the value of the third parameter to setpriority().
1c79356b A	108	*/
	109	#define PRIO_MIN -20
	110	#define PRIO_MAX 20
2d21ac55 A	111
	112	/* use PRIO_DARWIN_BG to set the current thread into "background" state
	113	* which lowers CPU, disk IO, and networking priorites until thread terminates
	114	* or "background" state is revoked
	115	*/
	116	#define PRIO_DARWIN_BG 0x1000
	117
	118	#endif /* (!_POSIX_C_SOURCE \|\| _DARWIN_C_SOURCE) */
1c79356b	119
1c79356b	120
91447636 A	121
	122	/*****
	123	* RESOURCE USAGE
1c79356b A	124	*/
1c79356b A	125
91447636 A	126	/*
	127	* Possible values of the first parameter to getrusage(), used to indicate
	128	* the scope of the information to be returned.
	129	*/
	130	#define RUSAGE_SELF 0 /* Current process information */
	131	#define RUSAGE_CHILDREN -1 /* Current process' children */
1c79356b	132
91447636 A	133	/*
	134	* A structure representing an accounting of resource utilization. The
	135	* address of an instance of this structure is the second parameter to
	136	* getrusage().
	137	*
	138	* Note: All values other than ru_utime and ru_stime are implementaiton
	139	* defined and subject to change in a future release. Their use
	140	* is discouraged for standards compliant programs.
	141	*/
1c79356b	142	struct rusage {
2d21ac55 A	143	struct timeval ru_utime; /* user time used (PL) */
	144	struct timeval ru_stime; /* system time used (PL) */
	145	#if defined(_POSIX_C_SOURCE) && !defined(_DARWIN_C_SOURCE)
91447636	146	long ru_opaque[14]; /* implementation defined */
2d21ac55	147	#else /* (!_POSIX_C_SOURCE \|\| _DARWIN_C_SOURCE) */
91447636 A	148	/*
	149	* Informational aliases for source compatibility with programs
	150	* that need more information than that provided by standards,
	151	* and which do not mind being OS-dependent.
	152	*/
2d21ac55	153	long ru_maxrss; /* max resident set size (PL) */
91447636	154	#define ru_first ru_ixrss /* internal: ruadd() range start */
2d21ac55 A	155	long ru_ixrss; /* integral shared memory size (NU) */
	156	long ru_idrss; /* integral unshared data (NU) */
	157	long ru_isrss; /* integral unshared stack (NU) */
	158	long ru_minflt; /* page reclaims (NU) */
	159	long ru_majflt; /* page faults (NU) */
	160	long ru_nswap; /* swaps (NU) */
	161	long ru_inblock; /* block input operations (atomic) */
	162	long ru_oublock; /* block output operations (atomic) */
	163	long ru_msgsnd; /* messages sent (atomic) */
	164	long ru_msgrcv; /* messages received (atomic) */
	165	long ru_nsignals; /* signals received (atomic) */
	166	long ru_nvcsw; /* voluntary context switches (atomic) */
1c79356b	167	long ru_nivcsw; /* involuntary " */
91447636	168	#define ru_last ru_nivcsw /* internal: ruadd() range end */
2d21ac55	169	#endif /* (!_POSIX_C_SOURCE \|\| _DARWIN_C_SOURCE) */
91447636 A	170	};
	171
	172
91447636 A	173	#ifdef KERNEL
	174	#include <machine/types.h> /* user_time_t */
	175
	176	/* LP64 version of struct timeval. time_t is a long and must grow when
	177	* we're dealing with a 64-bit process.
	178	* WARNING - keep in sync with struct timeval
	179	*/
	180
91447636 A	181	struct user_rusage_timeval {
91447636 A	182	user_time_t tv_sec; /* seconds */
0c530ab8	183	__darwin_suseconds_t tv_usec __attribute((aligned(8))); /* and microseconds */
91447636 A	184	};
	185	struct user_rusage {
	186	struct user_rusage_timeval ru_utime; /* user time used */
	187	struct user_rusage_timeval ru_stime; /* system time used */
	188	user_long_t ru_maxrss; /* max resident set size */
	189	user_long_t ru_ixrss; /* integral shared memory size */
	190	user_long_t ru_idrss; /* integral unshared data " */
	191	user_long_t ru_isrss; /* integral unshared stack " */
	192	user_long_t ru_minflt; /* page reclaims */
	193	user_long_t ru_majflt; /* page faults */
	194	user_long_t ru_nswap; /* swaps */
	195	user_long_t ru_inblock; /* block input operations */
	196	user_long_t ru_oublock; /* block output operations */
	197	user_long_t ru_msgsnd; /* messages sent */
	198	user_long_t ru_msgrcv; /* messages received */
	199	user_long_t ru_nsignals; /* signals received */
	200	user_long_t ru_nvcsw; /* voluntary context switches */
	201	user_long_t ru_nivcsw; /* involuntary " */
1c79356b A	202	};
1c79356b A	203
91447636 A	204	#endif // KERNEL
	205
	206
	207	/*****
	208	* RESOURCE LIMITS
	209	*/
	210
1c79356b	211	/*
91447636 A	212	* Symbolic constants for resource limits; since all limits are representable
	213	* as a type rlim_t, we are permitted to define RLIM_SAVED_* in terms of
	214	* RLIM_INFINITY.
1c79356b	215	*/
91447636 A	216	#define RLIM_INFINITY (((__uint64_t)1 << 63) - 1) /* no limit */
	217	#define RLIM_SAVED_MAX RLIM_INFINITY /* Unrepresentable hard limit */
	218	#define RLIM_SAVED_CUR RLIM_INFINITY /* Unrepresentable soft limit */
	219
	220	/*
	221	* Possible values of the first parameter to getrlimit()/setrlimit(), to
	222	* indicate for which resource the operation is being performed.
	223	*/
2d21ac55	224	#define RLIMIT_CPU 0 /* cpu time per process */
91447636 A	225	#define RLIMIT_FSIZE 1 /* file size */
91447636 A	226	#define RLIMIT_DATA 2 /* data segment size */
1c79356b A	227	#define RLIMIT_STACK 3 /* stack size */
1c79356b A	228	#define RLIMIT_CORE 4 /* core file size */
91447636	229	#define RLIMIT_AS 5 /* address space (resident set size) */
2d21ac55	230	#if !defined(_POSIX_C_SOURCE) \|\| defined(_DARWIN_C_SOURCE)
91447636	231	#define RLIMIT_RSS RLIMIT_AS /* source compatibility alias */
1c79356b A	232	#define RLIMIT_MEMLOCK 6 /* locked-in-memory address space */
1c79356b A	233	#define RLIMIT_NPROC 7 /* number of processes */
2d21ac55	234	#endif /* (!_POSIX_C_SOURCE \|\| _DARWIN_C_SOURCE) */
1c79356b	235	#define RLIMIT_NOFILE 8 /* number of open files */
2d21ac55	236	#if !defined(_POSIX_C_SOURCE) \|\| defined(_DARWIN_C_SOURCE)
91447636	237	#define RLIM_NLIMITS 9 /* total number of resource limits */
2d21ac55 A	238	#endif /* (!_POSIX_C_SOURCE \|\| _DARWIN_C_SOURCE) */
2d21ac55 A	239	#define _RLIMIT_POSIX_FLAG 0x1000 /* Set bit for strict POSIX */
1c79356b	240
91447636 A	241	/*
	242	* A structure representing a resource limit. The address of an instance
	243	* of this structure is the second parameter to getrlimit()/setrlimit().
	244	*/
1c79356b A	245	struct rlimit {
	246	rlim_t rlim_cur; /* current (soft) limit */
	247	rlim_t rlim_max; /* maximum value for rlim_cur */
	248	};
	249
2d21ac55 A	250	#if !defined(_POSIX_C_SOURCE) \|\| defined(_DARWIN_C_SOURCE)
	251	/* I/O type */
	252	#define IOPOL_TYPE_DISK 0
	253
	254	/* scope */
	255	#define IOPOL_SCOPE_PROCESS 0
	256	#define IOPOL_SCOPE_THREAD 1
	257
	258	/* I/O Priority */
	259	#define IOPOL_DEFAULT 0
	260	#define IOPOL_NORMAL 1
	261	#define IOPOL_PASSIVE 2
	262	#define IOPOL_THROTTLE 3
	263
	264	#ifdef PRIVATE
	265	/*
	266	* Structures for use in communicating via iopolicysys() between Lic and the
	267	* kernel. Not to be used by uesr programs directly.
	268	*/
	269
	270	/*
	271	* the command to iopolicysys()
	272	*/
	273	#define IOPOL_CMD_GET 0x00000001 /* Get I/O policy */
	274	#define IOPOL_CMD_SET 0x00000002 /* Set I/O policy */
	275
	276	/*
	277	* Second parameter to iopolicysys()
	278	*/
	279	struct _iopol_param_t {
	280	int iop_scope; /* current process or a thread */
	281	int iop_iotype;
	282	int iop_policy;
	283	};
	284
	285	#endif /* PRIVATE */
	286	#endif /* !_POSIX_C_SOURCE \|\| _DARWIN_C_SOURCE */
1c79356b	287
91447636	288	#ifndef KERNEL
1c79356b A	289
1c79356b A	290	__BEGIN_DECLS
91447636	291	int getpriority(int, id_t);
2d21ac55 A	292	#if !defined(_POSIX_C_SOURCE) \|\| defined(_DARWIN_C_SOURCE)
	293	int getiopolicy_np(int, int);
	294	#endif /* !_POSIX_C_SOURCE \|\| _DARWIN_C_SOURCE */
	295	int getrlimit(int, struct rlimit *) __DARWIN_ALIAS(getrlimit);
91447636 A	296	int getrusage(int, struct rusage *);
91447636 A	297	int setpriority(int, id_t, int);
2d21ac55 A	298	#if !defined(_POSIX_C_SOURCE) \|\| defined(_DARWIN_C_SOURCE)
	299	int setiopolicy_np(int, int, int);
	300	#endif /* !_POSIX_C_SOURCE \|\| _DARWIN_C_SOURCE */
	301	int setrlimit(int, const struct rlimit *) __DARWIN_ALIAS(setrlimit);
1c79356b A	302	__END_DECLS
1c79356b A	303
91447636	304	#endif /* !KERNEL */
1c79356b	305	#endif /* !_SYS_RESOURCE_H_ */