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  * 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 $
  35  * $DragonFly: src/sys/sys/resource.h,v 1.9 2006/05/20 02:42:13 dillon Exp $
  36  */
  37
  38 #ifndef _SYS_RESOURCE_H_
  39 #define _SYS_RESOURCE_H_
  40
  41 #ifndef _SYS_TYPES_H_
  42 #include <sys/types.h>
  43 #endif
  44 #ifndef _SYS_TIME_H_
  45 #include <sys/time.h>
  46 #endif
  47
  48 /*
  49  * Process priority specifications to get/setpriority.
  50  */
  51 #define PRIO_MIN        -20
  52 #define PRIO_MAX        20
  53
  54 #define PRIO_PROCESS    0
  55 #define PRIO_PGRP       1
  56 #define PRIO_USER       2
  57
  58 /*
  59  * Resource utilization information.
  60  */
  61
  62 #define RUSAGE_SELF     0
  63 #define RUSAGE_CHILDREN -1
  64
  65 struct  rusage {
  66         struct timeval ru_utime;        /* user time used */
  67         struct timeval ru_stime;        /* system time used */
  68         long    ru_maxrss;              /* max resident set size */
  69 #define ru_first        ru_ixrss
  70         long    ru_ixrss;               /* integral shared memory size */
  71         long    ru_idrss;               /* integral unshared data " */
  72         long    ru_isrss;               /* integral unshared stack " */
  73         long    ru_minflt;              /* page reclaims */
  74         long    ru_majflt;              /* page faults */
  75         long    ru_nswap;               /* swaps */
  76         long    ru_inblock;             /* block input operations */
  77         long    ru_oublock;             /* block output operations */
  78         long    ru_msgsnd;              /* messages sent */
  79         long    ru_msgrcv;              /* messages received */
  80         long    ru_nsignals;            /* signals received */
  81         long    ru_nvcsw;               /* voluntary context switches */
  82         long    ru_nivcsw;              /* involuntary " */
  83 #define ru_last         ru_nivcsw
  84 };
  85
  86 /*
  87  * Resource limits
  88  */
  89 #define RLIMIT_CPU      0               /* cpu time in milliseconds */
  90 #define RLIMIT_FSIZE    1               /* maximum file size */
  91 #define RLIMIT_DATA     2               /* data size */
  92 #define RLIMIT_STACK    3               /* stack size */
  93 #define RLIMIT_CORE     4               /* core file size */
  94 #define RLIMIT_RSS      5               /* resident set size */
  95 #define RLIMIT_MEMLOCK  6               /* locked-in-memory address space */
  96 #define RLIMIT_NPROC    7               /* number of processes */
  97 #define RLIMIT_NOFILE   8               /* number of open files */
  98 #define RLIMIT_SBSIZE   9               /* maximum size of all socket buffers */
  99 #define RLIMIT_VMEM     10              /* virtual process size (inclusive of mmap) */
 100 #define RLIMIT_POSIXLOCKS 11            /* maximum number of POSIX locks per user */
 101
 102 #define RLIM_NLIMITS    12              /* number of resource limits */
 103
 104 #define RLIM_INFINITY   ((rlim_t)(((u_quad_t)1 << 63) - 1))
 105
 106
 107 /*
 108  * Resource limit string identifiers
 109  */
 110
 111 #ifdef _RLIMIT_IDENT
 112 static char *rlimit_ident[] = {
 113         "cpu",
 114         "fsize",
 115         "data",
 116         "stack",
 117         "core",
 118         "rss",
 119         "memlock",
 120         "nproc",
 121         "nofile",
 122         "sbsize",
 123         "vmem",
 124         "posixlock",
 125 };
 126 #endif
 127
 128 struct orlimit {
 129         int32_t rlim_cur;               /* current (soft) limit */
 130         int32_t rlim_max;               /* maximum value for rlim_cur */
 131 };
 132
 133 struct rlimit {
 134         rlim_t  rlim_cur;               /* current (soft) limit */
 135         rlim_t  rlim_max;               /* maximum value for rlim_cur */
 136 };
 137
 138 /* Load average structure. */
 139 struct loadavg {
 140         fixpt_t ldavg[3];
 141         long    fscale;
 142 };
 143
 144 #ifdef _KERNEL
 145 extern struct loadavg averunnable;
 146
 147 int     dosetrlimit (u_int which, struct rlimit *limp);
 148
 149 #else
 150 #include <sys/cdefs.h>
 151
 152 __BEGIN_DECLS
 153 int     getpriority (int, int);
 154 int     getrlimit (int, struct rlimit *);
 155 int     getrusage (int, struct rusage *);
 156 int     setpriority (int, int, int);
 157 int     setrlimit (int, const struct rlimit *);
 158 __END_DECLS
 159
 160 #endif  /* _KERNEL */
 161 #endif  /* !_SYS_RESOURCE_H_ */