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 #define RUSAGE_THREAD   1               /* only the calling thread */
  23
  24 struct  rusage {
  25         struct timeval ru_utime;        /* user time used */
  26         struct timeval ru_stime;        /* system time used */
  27         long    ru_maxrss;              /* maximum resident set size */
  28         long    ru_ixrss;               /* integral shared memory size */
  29         long    ru_idrss;               /* integral unshared data size */
  30         long    ru_isrss;               /* integral unshared stack size */
  31         long    ru_minflt;              /* page reclaims */
  32         long    ru_majflt;              /* page faults */
  33         long    ru_nswap;               /* swaps */
  34         long    ru_inblock;             /* block input operations */
  35         long    ru_oublock;             /* block output operations */
  36         long    ru_msgsnd;              /* messages sent */
  37         long    ru_msgrcv;              /* messages received */
  38         long    ru_nsignals;            /* signals received */
  39         long    ru_nvcsw;               /* voluntary context switches */
  40         long    ru_nivcsw;              /* involuntary " */
  41 };
  42
  43 struct rlimit {
  44         unsigned long   rlim_cur;
  45         unsigned long   rlim_max;
  46 };
  47
  48 #define PRIO_MIN        (-20)
  49 #define PRIO_MAX        20
  50
  51 #define PRIO_PROCESS    0
  52 #define PRIO_PGRP       1
  53 #define PRIO_USER       2
  54
  55 /*
  56  * Limit the stack by to some sane default: root can always
  57  * increase this limit if needed..  8MB seems reasonable.
  58  */
  59 #define _STK_LIM        (8*1024*1024)
  60
  61 /*
  62  * GPG2 wants 64kB of mlocked memory, to make sure pass phrases
  63  * and other sensitive information are never written to disk.
  64  */
  65 #define MLOCK_LIMIT     ((PAGE_SIZE > 64*1024) ? PAGE_SIZE : 64*1024)
  66
  67 /*
  68  * Due to binary compatibility, the actual resource numbers
  69  * may be different for different linux versions..
  70  */
  71 #include <asm/resource.h>
  72
  73 int getrusage(struct task_struct *p, int who, struct rusage __user *ru);
  74
  75 #endif