include/linux/resource.h

   1 #ifndef _LINUX_RESOURCE_H
   2 #define _LINUX_RESOURCE_H
   3
   4 #include <linux/time.h>
   5
   6 struct task_struct;
   7
   8 /*
   9  * Resource control/accounting header file for linux
  10  */
  11
  12 /*
  13  * Definition of struct rusage taken from BSD 4.3 Reno
  14  *
  15  * We don't support all of these yet, but we might as well have them....
  16  * Otherwise, each time we add new items, programs which depend on this
  17  * structure will lose.  This reduces the chances of that happening.
  18  */
  19 #define RUSAGE_SELF     0
  20 #define RUSAGE_CHILDREN (-1)
  21 #define RUSAGE_BOTH     (-2)            /* sys_wait4() uses this */
  22
  23 struct  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
  42 struct rlimit {
  43         unsigned long   rlim_cur;
  44         unsigned long   rlim_max;
  45 };
  46
  47 #define PRIO_MIN        (-20)
  48 #define PRIO_MAX        20
  49
  50 #define PRIO_PROCESS    0
  51 #define PRIO_PGRP       1
  52 #define PRIO_USER       2
  53
  54 /*
  55  * Limit the stack by to some sane default: root can always
  56  * increase this limit if needed..  8MB seems reasonable.
  57  */
  58 #define _STK_LIM        (8*1024*1024)
  59
  60 /*
  61  * GPG wants 32kB of mlocked memory, to make sure pass phrases
  62  * and other sensitive information are never written to disk.
  63  */
  64 #define MLOCK_LIMIT     (8 * PAGE_SIZE)
  65
  66 /*
  67  * Due to binary compatibility, the actual resource numbers
  68  * may be different for different linux versions..
  69  */
  70 #include <asm/resource.h>
  71
  72 int getrusage(struct task_struct *p, int who, struct rusage __user *ru);
  73
  74 #endif