master
1/* $NetBSD: resource.h,v 1.36 2019/03/30 23:29:55 christos Exp $ */
2
3/*
4 * Copyright (c) 1982, 1986, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 *
31 * @(#)resource.h 8.4 (Berkeley) 1/9/95
32 */
33
34#ifndef _SYS_RESOURCE_H_
35#define _SYS_RESOURCE_H_
36
37#include <sys/featuretest.h>
38#include <sys/time.h>
39
40/*
41 * Process priority specifications to get/setpriority.
42 */
43#define PRIO_MIN -20
44#define PRIO_MAX 20
45
46#define PRIO_PROCESS 0
47#define PRIO_PGRP 1
48#define PRIO_USER 2
49
50/*
51 * Resource utilization information.
52 */
53
54#define RUSAGE_SELF 0
55#define RUSAGE_CHILDREN -1
56
57struct rusage {
58 struct timeval ru_utime; /* user time used */
59 struct timeval ru_stime; /* system time used */
60 long ru_maxrss; /* max resident set size */
61#define ru_first ru_ixrss
62 long ru_ixrss; /* integral shared memory size */
63 long ru_idrss; /* integral unshared data " */
64 long ru_isrss; /* integral unshared stack " */
65 long ru_minflt; /* page reclaims */
66 long ru_majflt; /* page faults */
67 long ru_nswap; /* swaps */
68 long ru_inblock; /* block input operations */
69 long ru_oublock; /* block output operations */
70 long ru_msgsnd; /* messages sent */
71 long ru_msgrcv; /* messages received */
72 long ru_nsignals; /* signals received */
73 long ru_nvcsw; /* voluntary context switches */
74 long ru_nivcsw; /* involuntary " */
75#define ru_last ru_nivcsw
76};
77
78#ifdef _NETBSD_SOURCE
79struct wrusage {
80 struct rusage wru_self;
81 struct rusage wru_children;
82};
83#endif
84
85/*
86 * Resource limits
87 */
88#define RLIMIT_CPU 0 /* cpu time in milliseconds */
89#define RLIMIT_FSIZE 1 /* maximum file size */
90#define RLIMIT_DATA 2 /* data size */
91#define RLIMIT_STACK 3 /* stack size */
92#define RLIMIT_CORE 4 /* core file size */
93#define RLIMIT_RSS 5 /* resident set size */
94#define RLIMIT_MEMLOCK 6 /* locked-in-memory address space */
95#define RLIMIT_NPROC 7 /* number of processes */
96#define RLIMIT_NOFILE 8 /* number of open files */
97#define RLIMIT_SBSIZE 9 /* maximum size of all socket buffers */
98#define RLIMIT_AS 10 /* virtual process size (inclusive of mmap) */
99#define RLIMIT_VMEM RLIMIT_AS /* common alias */
100#define RLIMIT_NTHR 11 /* number of threads */
101
102#if defined(_NETBSD_SOURCE)
103#define RLIM_NLIMITS 12 /* number of resource limits */
104
105#define RLIM_STRINGS { \
106 "cpu-time", \
107 "file-size", \
108 "data-size", \
109 "stack-size", \
110 "core-dump-size", \
111 "resident-memory-size", \
112 "locked-memory-size", \
113 "processes-number", \
114 "files-number", \
115 "socket-buffer-size", \
116 "virtual-memory-size", \
117 "threads-number", \
118}
119#endif
120
121#define RLIM_INFINITY (~((u_quad_t)1 << 63)) /* no limit */
122#define RLIM_SAVED_MAX RLIM_INFINITY /* unrepresentable hard limit */
123#define RLIM_SAVED_CUR RLIM_INFINITY /* unrepresentable soft limit */
124
125#if defined(_KERNEL)
126/* 4.3BSD compatibility rlimit argument structure. */
127struct orlimit {
128 int32_t rlim_cur; /* current (soft) limit */
129 int32_t rlim_max; /* maximum value for rlim_cur */
130};
131#endif
132
133struct rlimit {
134 rlim_t rlim_cur; /* current (soft) limit */
135 rlim_t rlim_max; /* maximum value for rlim_cur */
136};
137
138#if defined(_NETBSD_SOURCE)
139/* Load average structure. */
140struct loadavg {
141 fixpt_t ldavg[3];
142 long fscale;
143};
144#endif
145
146#ifdef _KERNEL
147extern struct loadavg averunnable;
148struct pcred;
149int dosetrlimit(struct lwp *, struct proc *, int, struct rlimit *);
150#else
151#include <sys/cdefs.h>
152
153__BEGIN_DECLS
154int getpriority(int, id_t);
155int getrlimit(int, struct rlimit *);
156#ifndef __LIBC12_SOURCE__
157int getrusage(int, struct rusage *) __RENAME(__getrusage50);
158#endif
159int setpriority(int, id_t, int);
160int setrlimit(int, const struct rlimit *);
161__END_DECLS
162
163#endif /* _KERNEL */
164#endif /* !_SYS_RESOURCE_H_ */