include/linux/resource.h

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