root/include/linux/resource.h

INCLUDED FROM

#ifndef _LINUX_RESOURCE_H
#define _LINUX_RESOURCE_H

#include <linux/time.h>

struct task_struct;

/*
 * Resource control/accounting header file for linux
 */

/*
 * Definition of struct rusage taken from BSD 4.3 Reno
 * 
 * We don't support all of these yet, but we might as well have them....
 * Otherwise, each time we add new items, programs which depend on this
 * structure will lose.  This reduces the chances of that happening.
 */
#define RUSAGE_SELF     0
#define RUSAGE_CHILDREN (-1)
#define RUSAGE_BOTH     (-2)            /* sys_wait4() uses this */
#define RUSAGE_THREAD   1               /* only the calling thread */

struct  rusage {
        struct timeval ru_utime;        /* user time used */
        struct timeval ru_stime;        /* system time used */
        long    ru_maxrss;              /* maximum resident set size */
        long    ru_ixrss;               /* integral shared memory size */
        long    ru_idrss;               /* integral unshared data size */
        long    ru_isrss;               /* integral unshared stack size */
        long    ru_minflt;              /* page reclaims */
        long    ru_majflt;              /* page faults */
        long    ru_nswap;               /* swaps */
        long    ru_inblock;             /* block input operations */
        long    ru_oublock;             /* block output operations */
        long    ru_msgsnd;              /* messages sent */
        long    ru_msgrcv;              /* messages received */
        long    ru_nsignals;            /* signals received */
        long    ru_nvcsw;               /* voluntary context switches */
        long    ru_nivcsw;              /* involuntary " */
};

struct rlimit {
        unsigned long   rlim_cur;
        unsigned long   rlim_max;
};

#define PRIO_MIN        (-20)
#define PRIO_MAX        20

#define PRIO_PROCESS    0
#define PRIO_PGRP       1
#define PRIO_USER       2

/*
 * Limit the stack by to some sane default: root can always
 * increase this limit if needed..  8MB seems reasonable.
 */
#define _STK_LIM        (8*1024*1024)

/*
 * GPG wants 32kB of mlocked memory, to make sure pass phrases
 * and other sensitive information are never written to disk.
 */
#define MLOCK_LIMIT     (8 * PAGE_SIZE)

/*
 * Due to binary compatibility, the actual resource numbers
 * may be different for different linux versions..
 */
#include <asm/resource.h>

int getrusage(struct task_struct *p, int who, struct rusage __user *ru);

#endif