FreeBSD/Linux Kernel Cross Reference
sys/sys/resource.h
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 * 4. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * @(#)resource.h 8.4 (Berkeley) 1/9/95
30 * $FreeBSD: releng/5.4/sys/sys/resource.h 145335 2005-04-20 19:11:07Z cvs2svn $
31 */
32
33 #ifndef _SYS_RESOURCE_H_
34 #define _SYS_RESOURCE_H_
35
36 #include <sys/cdefs.h>
37 #include <sys/_timeval.h>
38 #include <sys/_types.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
57 struct 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 /*
79 * Resource limits
80 */
81 #define RLIMIT_CPU 0 /* cpu time in milliseconds */
82 #define RLIMIT_FSIZE 1 /* maximum file size */
83 #define RLIMIT_DATA 2 /* data size */
84 #define RLIMIT_STACK 3 /* stack size */
85 #define RLIMIT_CORE 4 /* core file size */
86 #define RLIMIT_RSS 5 /* resident set size */
87 #define RLIMIT_MEMLOCK 6 /* locked-in-memory address space */
88 #define RLIMIT_NPROC 7 /* number of processes */
89 #define RLIMIT_NOFILE 8 /* number of open files */
90 #define RLIMIT_SBSIZE 9 /* maximum size of all socket buffers */
91 #define RLIMIT_VMEM 10 /* virtual process size (inclusive of mmap) */
92 #define RLIMIT_AS RLIMIT_VMEM /* standard name for RLIMIT_VMEM */
93
94 #define RLIM_NLIMITS 11 /* number of resource limits */
95
96 #define RLIM_INFINITY ((rlim_t)(((u_quad_t)1 << 63) - 1))
97 /* XXX Missing: RLIM_SAVED_MAX, RLIM_SAVED_CUR */
98
99
100 /*
101 * Resource limit string identifiers
102 */
103
104 #ifdef _RLIMIT_IDENT
105 static 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",
117 };
118 #endif
119
120 #ifndef _RLIM_T_DECLARED
121 typedef __rlim_t rlim_t;
122 #define _RLIM_T_DECLARED
123 #endif
124
125 struct rlimit {
126 rlim_t rlim_cur; /* current (soft) limit */
127 rlim_t rlim_max; /* maximum value for rlim_cur */
128 };
129
130 #if __BSD_VISIBLE
131
132 struct orlimit {
133 __int32_t rlim_cur; /* current (soft) limit */
134 __int32_t rlim_max; /* maximum value for rlim_cur */
135 };
136
137 struct loadavg {
138 __fixpt_t ldavg[3];
139 long fscale;
140 };
141
142 #define CP_USER 0
143 #define CP_NICE 1
144 #define CP_SYS 2
145 #define CP_INTR 3
146 #define CP_IDLE 4
147 #define CPUSTATES 5
148
149 #endif /* __BSD_VISIBLE */
150
151 #ifdef _KERNEL
152 extern struct loadavg averunnable;
153 extern long cp_time[CPUSTATES];
154
155 int kern_setrlimit(struct thread *, u_int, struct rlimit *);
156
157 #else
158
159 __BEGIN_DECLS
160 /* XXX 2nd arg to [gs]etpriority() should be an id_t */
161 int getpriority(int, int);
162 int getrlimit(int, struct rlimit *);
163 int getrusage(int, struct rusage *);
164 int setpriority(int, int, int);
165 int setrlimit(int, const struct rlimit *);
166 __END_DECLS
167
168 #endif /* _KERNEL */
169 #endif /* !_SYS_RESOURCE_H_ */
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