Change sendfile() to use the new m_ext callback scheme for cleaning up after
[dragonfly.git] / sys / sys / resource.h
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1/*
2 * Copyright (c) 1982, 1986, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 * @(#)resource.h 8.4 (Berkeley) 1/9/95
34 * $FreeBSD: src/sys/sys/resource.h,v 1.12.2.2 2002/08/20 18:42:20 dillon Exp $
ca089a81 35 * $DragonFly: src/sys/sys/resource.h,v 1.8 2004/07/27 19:18:50 drhodus Exp $
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36 */
37
38#ifndef _SYS_RESOURCE_H_
39#define _SYS_RESOURCE_H_
40
41/*
42 * Process priority specifications to get/setpriority.
43 */
44#define PRIO_MIN -20
45#define PRIO_MAX 20
46
47#define PRIO_PROCESS 0
48#define PRIO_PGRP 1
49#define PRIO_USER 2
50
51/*
52 * Resource utilization information.
53 */
54
55#define RUSAGE_SELF 0
56#define RUSAGE_CHILDREN -1
57
58struct rusage {
59 struct timeval ru_utime; /* user time used */
60 struct timeval ru_stime; /* system time used */
61 long ru_maxrss; /* max resident set size */
62#define ru_first ru_ixrss
63 long ru_ixrss; /* integral shared memory size */
64 long ru_idrss; /* integral unshared data " */
65 long ru_isrss; /* integral unshared stack " */
66 long ru_minflt; /* page reclaims */
67 long ru_majflt; /* page faults */
68 long ru_nswap; /* swaps */
69 long ru_inblock; /* block input operations */
70 long ru_oublock; /* block output operations */
71 long ru_msgsnd; /* messages sent */
72 long ru_msgrcv; /* messages received */
73 long ru_nsignals; /* signals received */
74 long ru_nvcsw; /* voluntary context switches */
75 long ru_nivcsw; /* involuntary " */
76#define ru_last ru_nivcsw
77};
78
79/*
80 * Resource limits
81 */
82#define RLIMIT_CPU 0 /* cpu time in milliseconds */
83#define RLIMIT_FSIZE 1 /* maximum file size */
84#define RLIMIT_DATA 2 /* data size */
85#define RLIMIT_STACK 3 /* stack size */
86#define RLIMIT_CORE 4 /* core file size */
87#define RLIMIT_RSS 5 /* resident set size */
88#define RLIMIT_MEMLOCK 6 /* locked-in-memory address space */
89#define RLIMIT_NPROC 7 /* number of processes */
90#define RLIMIT_NOFILE 8 /* number of open files */
91#define RLIMIT_SBSIZE 9 /* maximum size of all socket buffers */
92#define RLIMIT_VMEM 10 /* virtual process size (inclusive of mmap) */
508ceb09 93#define RLIMIT_POSIXLOCKS 11 /* maximum number of POSIX locks per user */
984263bc 94
508ceb09 95#define RLIM_NLIMITS 12 /* number of resource limits */
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96
97#define RLIM_INFINITY ((rlim_t)(((u_quad_t)1 << 63) - 1))
98
99
100/*
101 * Resource limit string identifiers
102 */
103
104#ifdef _RLIMIT_IDENT
105static char *rlimit_ident[] = {
106 "cpu",
107 "fsize",
108 "data",
109 "stack",
110 "core",
111 "rss",
112 "memlock",
113 "nproc",
114 "nofile",
115 "sbsize",
116 "vmem",
508ceb09 117 "posixlock",
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118};
119#endif
120
121struct orlimit {
122 int32_t rlim_cur; /* current (soft) limit */
123 int32_t rlim_max; /* maximum value for rlim_cur */
124};
125
126struct rlimit {
127 rlim_t rlim_cur; /* current (soft) limit */
128 rlim_t rlim_max; /* maximum value for rlim_cur */
129};
130
131/* Load average structure. */
132struct loadavg {
133 fixpt_t ldavg[3];
134 long fscale;
135};
136
137#ifdef _KERNEL
138extern struct loadavg averunnable;
139
b153f746 140int dosetrlimit (u_int which, struct rlimit *limp);
f15db79e 141
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142#else
143#include <sys/cdefs.h>
144
145__BEGIN_DECLS
ca089a81 146int getpriority (int, int);
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147int getrlimit (int, struct rlimit *);
148int getrusage (int, struct rusage *);
ca089a81 149int setpriority (int, int, int);
b153f746 150int setrlimit (int, const struct rlimit *);
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151__END_DECLS
152
153#endif /* _KERNEL */
154#endif /* !_SYS_RESOURCE_H_ */