linux/include/linux/resource.h
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   1#ifndef _LINUX_RESOURCE_H
   2#define _LINUX_RESOURCE_H
   3
   4#include <linux/time.h>
   5#include <linux/types.h>
   6
   7/*
   8 * Resource control/accounting header file for linux
   9 */
  10
  11/*
  12 * Definition of struct rusage taken from BSD 4.3 Reno
  13 * 
  14 * We don't support all of these yet, but we might as well have them....
  15 * Otherwise, each time we add new items, programs which depend on this
  16 * structure will lose.  This reduces the chances of that happening.
  17 */
  18#define RUSAGE_SELF     0
  19#define RUSAGE_CHILDREN (-1)
  20#define RUSAGE_BOTH     (-2)            /* sys_wait4() uses this */
  21#define RUSAGE_THREAD   1               /* only the calling thread */
  22
  23struct  rusage {
  24        struct timeval ru_utime;        /* user time used */
  25        struct timeval ru_stime;        /* system time used */
  26        long    ru_maxrss;              /* maximum resident set size */
  27        long    ru_ixrss;               /* integral shared memory size */
  28        long    ru_idrss;               /* integral unshared data size */
  29        long    ru_isrss;               /* integral unshared stack size */
  30        long    ru_minflt;              /* page reclaims */
  31        long    ru_majflt;              /* page faults */
  32        long    ru_nswap;               /* swaps */
  33        long    ru_inblock;             /* block input operations */
  34        long    ru_oublock;             /* block output operations */
  35        long    ru_msgsnd;              /* messages sent */
  36        long    ru_msgrcv;              /* messages received */
  37        long    ru_nsignals;            /* signals received */
  38        long    ru_nvcsw;               /* voluntary context switches */
  39        long    ru_nivcsw;              /* involuntary " */
  40};
  41
  42struct rlimit {
  43        unsigned long   rlim_cur;
  44        unsigned long   rlim_max;
  45};
  46
  47#define RLIM64_INFINITY         (~0ULL)
  48
  49struct rlimit64 {
  50        __u64 rlim_cur;
  51        __u64 rlim_max;
  52};
  53
  54#define PRIO_MIN        (-20)
  55#define PRIO_MAX        20
  56
  57#define PRIO_PROCESS    0
  58#define PRIO_PGRP       1
  59#define PRIO_USER       2
  60
  61/*
  62 * Limit the stack by to some sane default: root can always
  63 * increase this limit if needed..  8MB seems reasonable.
  64 */
  65#define _STK_LIM        (8*1024*1024)
  66
  67/*
  68 * GPG2 wants 64kB of mlocked memory, to make sure pass phrases
  69 * and other sensitive information are never written to disk.
  70 */
  71#define MLOCK_LIMIT     ((PAGE_SIZE > 64*1024) ? PAGE_SIZE : 64*1024)
  72
  73/*
  74 * Due to binary compatibility, the actual resource numbers
  75 * may be different for different linux versions..
  76 */
  77#include <asm/resource.h>
  78
  79#ifdef __KERNEL__
  80
  81struct task_struct;
  82
  83int getrusage(struct task_struct *p, int who, struct rusage __user *ru);
  84int do_prlimit(struct task_struct *tsk, unsigned int resource,
  85                struct rlimit *new_rlim, struct rlimit *old_rlim);
  86
  87#endif /* __KERNEL__ */
  88
  89#endif
  90
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