include/linux/resource.h

   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
  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 RLIM64_INFINITY         (~0ULL)
  48
  49 struct 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
  81 struct task_struct;
  82
  83 int getrusage(struct task_struct *p, int who, struct rusage __user *ru);
  84 int 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