sysdeps/unix/sysv/linux/mips/bits/resource.h

   1 /* Bit values & structures for resource limits.  Linux/MIPS version.
   2    Copyright (C) 1994-2019 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library.  If not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #ifndef _SYS_RESOURCE_H
  20 # error "Never use <bits/resource.h> directly; include <sys/resource.h> instead."
  21 #endif
  22
  23 #include <bits/types.h>
  24
  25 /* Transmute defines to enumerations.  The macro re-definitions are
  26    necessary because some programs want to test for operating system
  27    features with #ifdef RUSAGE_SELF.  In ISO C the reflexive
  28    definition is a no-op.  */
  29
  30 /* Kinds of resource limit.  */
  31 enum __rlimit_resource
  32 {
  33   /* Per-process CPU limit, in seconds.  */
  34   RLIMIT_CPU = 0,
  35 #define RLIMIT_CPU RLIMIT_CPU
  36
  37   /* Largest file that can be created, in bytes.  */
  38   RLIMIT_FSIZE = 1,
  39 #define RLIMIT_FSIZE RLIMIT_FSIZE
  40
  41   /* Maximum size of data segment, in bytes.  */
  42   RLIMIT_DATA = 2,
  43 #define RLIMIT_DATA RLIMIT_DATA
  44
  45   /* Maximum size of stack segment, in bytes.  */
  46   RLIMIT_STACK = 3,
  47 #define RLIMIT_STACK RLIMIT_STACK
  48
  49   /* Largest core file that can be created, in bytes.  */
  50   RLIMIT_CORE = 4,
  51 #define RLIMIT_CORE RLIMIT_CORE
  52
  53   /* Largest resident set size, in bytes.
  54      This affects swapping; processes that are exceeding their
  55      resident set size will be more likely to have physical memory
  56      taken from them.  */
  57   __RLIMIT_RSS = 7,
  58 #define RLIMIT_RSS __RLIMIT_RSS
  59
  60   /* Number of open files.  */
  61   RLIMIT_NOFILE = 5,
  62   __RLIMIT_OFILE = RLIMIT_NOFILE, /* BSD name for same.  */
  63 #define RLIMIT_NOFILE RLIMIT_NOFILE
  64 #define RLIMIT_OFILE __RLIMIT_OFILE
  65
  66   /* Address space limit (?) */
  67   RLIMIT_AS = 6,
  68 #define RLIMIT_AS RLIMIT_AS
  69
  70   /* Number of processes.  */
  71   __RLIMIT_NPROC = 8,
  72 #define RLIMIT_NPROC __RLIMIT_NPROC
  73
  74   /* Locked-in-memory address space.  */
  75   __RLIMIT_MEMLOCK = 9,
  76 #define RLIMIT_MEMLOCK __RLIMIT_MEMLOCK
  77
  78   /* Maximum number of file locks.  */
  79   __RLIMIT_LOCKS = 10,
  80 #define RLIMIT_LOCKS __RLIMIT_LOCKS
  81
  82   /* Maximum number of pending signals.  */
  83   __RLIMIT_SIGPENDING = 11,
  84 #define RLIMIT_SIGPENDING __RLIMIT_SIGPENDING
  85
  86   /* Maximum bytes in POSIX message queues.  */
  87   __RLIMIT_MSGQUEUE = 12,
  88 #define RLIMIT_MSGQUEUE __RLIMIT_MSGQUEUE
  89
  90   /* Maximum nice priority allowed to raise to.
  91      Nice levels 19 .. -20 correspond to 0 .. 39
  92      values of this resource limit.  */
  93   __RLIMIT_NICE = 13,
  94 #define RLIMIT_NICE __RLIMIT_NICE
  95
  96   /* Maximum realtime priority allowed for non-priviledged
  97      processes.  */
  98   __RLIMIT_RTPRIO = 14,
  99 #define RLIMIT_RTPRIO __RLIMIT_RTPRIO
 100
 101   /* Maximum CPU time in µs that a process scheduled under a real-time
 102      scheduling policy may consume without making a blocking system
 103      call before being forcibly descheduled.  */
 104   __RLIMIT_RTTIME = 15,
 105 #define RLIMIT_RTTIME __RLIMIT_RTTIME
 106
 107   __RLIMIT_NLIMITS = 16,
 108   __RLIM_NLIMITS = __RLIMIT_NLIMITS
 109 #define RLIMIT_NLIMITS __RLIMIT_NLIMITS
 110 #define RLIM_NLIMITS __RLIM_NLIMITS
 111 };
 112
 113 /* Value to indicate that there is no limit.  */
 114 #if _MIPS_SIM == _ABI64
 115 /* The N64 syscall uses this value.  */
 116 # define RLIM_INFINITY 0xffffffffffffffffUL
 117 # ifdef __USE_LARGEFILE64
 118 #  define RLIM64_INFINITY 0xffffffffffffffffUL
 119 # endif
 120 #else
 121 /* The O32 and N32 syscalls use 0x7fffffff.  */
 122 # ifndef __USE_FILE_OFFSET64
 123 #  define RLIM_INFINITY ((long int)(~0UL >> 1))
 124 # else
 125 #  define RLIM_INFINITY 0xffffffffffffffffULL
 126 # endif
 127 # ifdef __USE_LARGEFILE64
 128 #  define RLIM64_INFINITY 0xffffffffffffffffULL
 129 # endif
 130 #endif
 131
 132 /* We can represent all limits.  */
 133 #define RLIM_SAVED_MAX  RLIM_INFINITY
 134 #define RLIM_SAVED_CUR  RLIM_INFINITY
 135
 136
 137 /* Type for resource quantity measurement.  */
 138 #ifndef __USE_FILE_OFFSET64
 139 typedef __rlim_t rlim_t;
 140 #else
 141 typedef __rlim64_t rlim_t;
 142 #endif
 143 #ifdef __USE_LARGEFILE64
 144 typedef __rlim64_t rlim64_t;
 145 #endif
 146
 147 struct rlimit
 148   {
 149     /* The current (soft) limit.  */
 150     rlim_t rlim_cur;
 151     /* The hard limit.  */
 152     rlim_t rlim_max;
 153   };
 154
 155 #ifdef __USE_LARGEFILE64
 156 struct rlimit64
 157   {
 158     /* The current (soft) limit.  */
 159     rlim64_t rlim_cur;
 160     /* The hard limit.  */
 161     rlim64_t rlim_max;
 162  };
 163 #endif
 164
 165 /* Whose usage statistics do you want?  */
 166 enum __rusage_who
 167 {
 168   /* The calling process.  */
 169   RUSAGE_SELF = 0,
 170 #define RUSAGE_SELF RUSAGE_SELF
 171
 172   /* All of its terminated child processes.  */
 173   RUSAGE_CHILDREN = -1
 174 #define RUSAGE_CHILDREN RUSAGE_CHILDREN
 175
 176 #ifdef __USE_GNU
 177   ,
 178   /* The calling thread.  */
 179   RUSAGE_THREAD = 1
 180 # define RUSAGE_THREAD RUSAGE_THREAD
 181   /* Name for the same functionality on Solaris.  */
 182 # define RUSAGE_LWP RUSAGE_THREAD
 183 #endif
 184 };
 185
 186 #include <bits/types/struct_timeval.h>
 187 #include <bits/types/struct_rusage.h>
 188
 189 /* Priority limits.  */
 190 #define PRIO_MIN        -20     /* Minimum priority a process can have.  */
 191 #define PRIO_MAX        20      /* Maximum priority a process can have.  */
 192
 193 /* The type of the WHICH argument to `getpriority' and `setpriority',
 194    indicating what flavor of entity the WHO argument specifies.  */
 195 enum __priority_which
 196 {
 197   PRIO_PROCESS = 0,             /* WHO is a process ID.  */
 198 #define PRIO_PROCESS PRIO_PROCESS
 199   PRIO_PGRP = 1,                /* WHO is a process group ID.  */
 200 #define PRIO_PGRP PRIO_PGRP
 201   PRIO_USER = 2                 /* WHO is a user ID.  */
 202 #define PRIO_USER PRIO_USER
 203 };
 204
 205
 206 __BEGIN_DECLS
 207
 208 #ifdef __USE_GNU
 209 /* Modify and return resource limits of a process atomically.  */
 210 # ifndef __USE_FILE_OFFSET64
 211 extern int prlimit (__pid_t __pid, enum __rlimit_resource __resource,
 212                     const struct rlimit *__new_limit,
 213                     struct rlimit *__old_limit) __THROW;
 214 # else
 215 #  ifdef __REDIRECT_NTH
 216 extern int __REDIRECT_NTH (prlimit, (__pid_t __pid,
 217                                      enum __rlimit_resource __resource,
 218                                      const struct rlimit *__new_limit,
 219                                      struct rlimit *__old_limit), prlimit64);
 220 #  else
 221 #   define prlimit prlimit64
 222 #  endif
 223 # endif
 224 # ifdef __USE_LARGEFILE64
 225 extern int prlimit64 (__pid_t __pid, enum __rlimit_resource __resource,
 226                       const struct rlimit64 *__new_limit,
 227                       struct rlimit64 *__old_limit) __THROW;
 228 # endif
 229 #endif
 230
 231 __END_DECLS