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| 1 | /* Bit values & structures for resource limits. Linux/MIPS version. |
|---|---|
| 2 | Copyright (C) 1994-2024 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 microseconds 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 |
| 232 |
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