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| 1 | /* Bit values & structures for resource limits. 4.4 BSD/generic GNU version. |
|---|---|
| 2 | Copyright (C) 1994-2022 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 | /* These are the values for 4.4 BSD and GNU. Earlier BSD systems have a |
| 26 | subset of these kinds of resource limit. In systems where `getrlimit' |
| 27 | and `setrlimit' are not system calls, these are the values used by the C |
| 28 | library to emulate them. */ |
| 29 | |
| 30 | /* Kinds of resource limit. */ |
| 31 | enum __rlimit_resource |
| 32 | { |
| 33 | /* Per-process CPU limit, in seconds. */ |
| 34 | RLIMIT_CPU, |
| 35 | #define RLIMIT_CPU RLIMIT_CPU |
| 36 | /* Largest file that can be created, in bytes. */ |
| 37 | RLIMIT_FSIZE, |
| 38 | #define RLIMIT_FSIZE RLIMIT_FSIZE |
| 39 | /* Maximum size of data segment, in bytes. */ |
| 40 | RLIMIT_DATA, |
| 41 | #define RLIMIT_DATA RLIMIT_DATA |
| 42 | /* Maximum size of stack segment, in bytes. */ |
| 43 | RLIMIT_STACK, |
| 44 | #define RLIMIT_STACK RLIMIT_STACK |
| 45 | /* Largest core file that can be created, in bytes. */ |
| 46 | RLIMIT_CORE, |
| 47 | #define RLIMIT_CORE RLIMIT_CORE |
| 48 | /* Largest resident set size, in bytes. |
| 49 | This affects swapping; processes that are exceeding their |
| 50 | resident set size will be more likely to have physical memory |
| 51 | taken from them. */ |
| 52 | RLIMIT_RSS, |
| 53 | #define RLIMIT_RSS RLIMIT_RSS |
| 54 | /* Locked-in-memory address space. */ |
| 55 | RLIMIT_MEMLOCK, |
| 56 | #define RLIMIT_MEMLOCK RLIMIT_MEMLOCK |
| 57 | /* Number of processes. */ |
| 58 | RLIMIT_NPROC, |
| 59 | #define RLIMIT_NPROC RLIMIT_NPROC |
| 60 | /* Number of open files. */ |
| 61 | RLIMIT_OFILE, |
| 62 | RLIMIT_NOFILE = RLIMIT_OFILE, /* Another name for the same thing. */ |
| 63 | #define RLIMIT_OFILE RLIMIT_OFILE |
| 64 | #define RLIMIT_NOFILE RLIMIT_NOFILE |
| 65 | /* Maximum size of all socket buffers. */ |
| 66 | RLIMIT_SBSIZE, |
| 67 | #define RLIMIT_SBSIZE RLIMIT_SBSIZE |
| 68 | /* Maximum size in bytes of the process address space. */ |
| 69 | RLIMIT_AS, |
| 70 | RLIMIT_VMEM = RLIMIT_AS, /* Another name for the same thing. */ |
| 71 | #define RLIMIT_AS RLIMIT_AS |
| 72 | #define RLIMIT_VMEM RLIMIT_AS |
| 73 | |
| 74 | RLIMIT_NLIMITS, /* Number of limit flavors. */ |
| 75 | RLIM_NLIMITS = RLIMIT_NLIMITS /* Traditional name for same. */ |
| 76 | }; |
| 77 | |
| 78 | /* Value to indicate that there is no limit. */ |
| 79 | #ifndef __USE_FILE_OFFSET64 |
| 80 | # define RLIM_INFINITY 0x7fffffff |
| 81 | #else |
| 82 | # define RLIM_INFINITY 0x7fffffffffffffffLL |
| 83 | #endif |
| 84 | |
| 85 | #ifdef __USE_LARGEFILE64 |
| 86 | # define RLIM64_INFINITY 0x7fffffffffffffffLL |
| 87 | #endif |
| 88 | |
| 89 | /* We can represent all limits. */ |
| 90 | #define RLIM_SAVED_MAX RLIM_INFINITY |
| 91 | #define RLIM_SAVED_CUR RLIM_INFINITY |
| 92 | |
| 93 | |
| 94 | /* Type for resource quantity measurement. */ |
| 95 | #ifndef __USE_FILE_OFFSET64 |
| 96 | typedef __rlim_t rlim_t; |
| 97 | #else |
| 98 | typedef __rlim64_t rlim_t; |
| 99 | #endif |
| 100 | #ifdef __USE_LARGEFILE64 |
| 101 | typedef __rlim64_t rlim64_t; |
| 102 | #endif |
| 103 | |
| 104 | struct rlimit |
| 105 | { |
| 106 | /* The current (soft) limit. */ |
| 107 | rlim_t rlim_cur; |
| 108 | /* The hard limit. */ |
| 109 | rlim_t rlim_max; |
| 110 | }; |
| 111 | |
| 112 | #ifdef __USE_LARGEFILE64 |
| 113 | struct rlimit64 |
| 114 | { |
| 115 | /* The current (soft) limit. */ |
| 116 | rlim64_t rlim_cur; |
| 117 | /* The hard limit. */ |
| 118 | rlim64_t rlim_max; |
| 119 | }; |
| 120 | #endif |
| 121 | |
| 122 | /* Whose usage statistics do you want? */ |
| 123 | enum __rusage_who |
| 124 | /* The macro definitions are necessary because some programs want |
| 125 | to test for operating system features with #ifdef RUSAGE_SELF. |
| 126 | In ISO C the reflexive definition is a no-op. */ |
| 127 | { |
| 128 | /* The calling process. */ |
| 129 | RUSAGE_SELF = 0, |
| 130 | #define RUSAGE_SELF RUSAGE_SELF |
| 131 | /* All of its terminated child processes. */ |
| 132 | RUSAGE_CHILDREN = -1 |
| 133 | #define RUSAGE_CHILDREN RUSAGE_CHILDREN |
| 134 | }; |
| 135 | |
| 136 | #include <bits/types/struct_timeval.h> |
| 137 | #include <bits/types/struct_rusage.h> |
| 138 | |
| 139 | /* Priority limits. */ |
| 140 | #define PRIO_MIN -20 /* Minimum priority a process can have. */ |
| 141 | #define PRIO_MAX 20 /* Maximum priority a process can have. */ |
| 142 | |
| 143 | /* The type of the WHICH argument to `getpriority' and `setpriority', |
| 144 | indicating what flavor of entity the WHO argument specifies. */ |
| 145 | enum __priority_which |
| 146 | { |
| 147 | PRIO_PROCESS = 0, /* WHO is a process ID. */ |
| 148 | #define PRIO_PROCESS PRIO_PROCESS |
| 149 | PRIO_PGRP = 1, /* WHO is a process group ID. */ |
| 150 | #define PRIO_PGRP PRIO_PGRP |
| 151 | PRIO_USER = 2 /* WHO is a user ID. */ |
| 152 | #define PRIO_USER PRIO_USER |
| 153 | }; |
| 154 |
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