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b555e31b | 1 | /* Bit values & structures for resource limits. Alpha/Linux version. |
04277e02 | 2 | Copyright (C) 1994-2019 Free Software Foundation, Inc. |
b555e31b UD |
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 | |
3214b89b AJ |
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. | |
b555e31b UD |
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 | |
3214b89b | 13 | Lesser General Public License for more details. |
b555e31b | 14 | |
3214b89b | 15 | You should have received a copy of the GNU Lesser General Public |
ab84e3ff PE |
16 | License along with the GNU C Library. If not, see |
17 | <http://www.gnu.org/licenses/>. */ | |
b555e31b UD |
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. */ | |
744a7b20 UD |
57 | __RLIMIT_RSS = 5, |
58 | #define RLIMIT_RSS __RLIMIT_RSS | |
b555e31b UD |
59 | |
60 | /* Number of open files. */ | |
61 | RLIMIT_NOFILE = 6, | |
744a7b20 | 62 | __RLIMIT_OFILE = RLIMIT_NOFILE, /* BSD name for same. */ |
b555e31b | 63 | #define RLIMIT_NOFILE RLIMIT_NOFILE |
744a7b20 | 64 | #define RLIMIT_OFILE __RLIMIT_OFILE |
b555e31b UD |
65 | |
66 | /* Address space limit (?) */ | |
67 | RLIMIT_AS = 7, | |
68 | #define RLIMIT_AS RLIMIT_AS | |
69 | ||
70 | /* Number of processes. */ | |
744a7b20 UD |
71 | __RLIMIT_NPROC = 8, |
72 | #define RLIMIT_NPROC __RLIMIT_NPROC | |
b555e31b UD |
73 | |
74 | /* Locked-in-memory address space. */ | |
744a7b20 UD |
75 | __RLIMIT_MEMLOCK = 9, |
76 | #define RLIMIT_MEMLOCK __RLIMIT_MEMLOCK | |
b555e31b | 77 | |
f0cd8b6f | 78 | /* Maximum number of file locks. */ |
744a7b20 UD |
79 | __RLIMIT_LOCKS = 10, |
80 | #define RLIMIT_LOCKS __RLIMIT_LOCKS | |
f0cd8b6f | 81 | |
744a7b20 UD |
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 | ||
5e742931 UD |
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, | |
baee7540 | 99 | #define RLIMIT_RTPRIO __RLIMIT_RTPRIO |
5e742931 | 100 | |
53c2cb76 RH |
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, | |
744a7b20 UD |
108 | __RLIM_NLIMITS = __RLIMIT_NLIMITS |
109 | #define RLIMIT_NLIMITS __RLIMIT_NLIMITS | |
110 | #define RLIM_NLIMITS __RLIM_NLIMITS | |
b555e31b UD |
111 | }; |
112 | ||
113 | /* Value to indicate that there is no limit. */ | |
114 | #ifndef __USE_FILE_OFFSET64 | |
8e900969 | 115 | # define RLIM_INFINITY ((__rlim_t) -1) |
b555e31b | 116 | #else |
8e900969 | 117 | # define RLIM_INFINITY 0xffffffffffffffffuLL |
b555e31b UD |
118 | #endif |
119 | ||
120 | #ifdef __USE_LARGEFILE64 | |
8e900969 | 121 | # define RLIM64_INFINITY 0xffffffffffffffffuLL |
b555e31b UD |
122 | #endif |
123 | ||
124 | /* We can represent all limits. */ | |
125 | #define RLIM_SAVED_MAX RLIM_INFINITY | |
126 | #define RLIM_SAVED_CUR RLIM_INFINITY | |
127 | ||
128 | ||
129 | /* Type for resource quantity measurement. */ | |
130 | #ifndef __USE_FILE_OFFSET64 | |
131 | typedef __rlim_t rlim_t; | |
132 | #else | |
133 | typedef __rlim64_t rlim_t; | |
134 | #endif | |
135 | #ifdef __USE_LARGEFILE64 | |
136 | typedef __rlim64_t rlim64_t; | |
137 | #endif | |
138 | ||
139 | struct rlimit | |
140 | { | |
141 | /* The current (soft) limit. */ | |
142 | rlim_t rlim_cur; | |
143 | /* The hard limit. */ | |
144 | rlim_t rlim_max; | |
145 | }; | |
146 | ||
147 | #ifdef __USE_LARGEFILE64 | |
148 | struct rlimit64 | |
149 | { | |
150 | /* The current (soft) limit. */ | |
151 | rlim64_t rlim_cur; | |
152 | /* The hard limit. */ | |
153 | rlim64_t rlim_max; | |
154 | }; | |
155 | #endif | |
156 | ||
157 | /* Whose usage statistics do you want? */ | |
158 | enum __rusage_who | |
159 | { | |
160 | /* The calling process. */ | |
161 | RUSAGE_SELF = 0, | |
162 | #define RUSAGE_SELF RUSAGE_SELF | |
163 | ||
164 | /* All of its terminated child processes. */ | |
53c2cb76 | 165 | RUSAGE_CHILDREN = -1 |
b555e31b | 166 | #define RUSAGE_CHILDREN RUSAGE_CHILDREN |
b38a9099 UD |
167 | |
168 | #ifdef __USE_GNU | |
53c2cb76 | 169 | , |
b38a9099 UD |
170 | /* The calling thread. */ |
171 | RUSAGE_THREAD = 1 | |
172 | # define RUSAGE_THREAD RUSAGE_THREAD | |
173 | /* Name for the same functionality on Solaris. */ | |
174 | # define RUSAGE_LWP RUSAGE_THREAD | |
175 | #endif | |
b555e31b UD |
176 | }; |
177 | ||
05b68e14 | 178 | #include <bits/types/struct_timeval.h> |
a66bc30d | 179 | #include <bits/types/struct_rusage.h> |
b555e31b UD |
180 | |
181 | /* Priority limits. */ | |
182 | #define PRIO_MIN -20 /* Minimum priority a process can have. */ | |
183 | #define PRIO_MAX 20 /* Maximum priority a process can have. */ | |
184 | ||
185 | /* The type of the WHICH argument to `getpriority' and `setpriority', | |
186 | indicating what flavor of entity the WHO argument specifies. */ | |
187 | enum __priority_which | |
188 | { | |
189 | PRIO_PROCESS = 0, /* WHO is a process ID. */ | |
190 | #define PRIO_PROCESS PRIO_PROCESS | |
191 | PRIO_PGRP = 1, /* WHO is a process group ID. */ | |
192 | #define PRIO_PGRP PRIO_PGRP | |
193 | PRIO_USER = 2 /* WHO is a user ID. */ | |
194 | #define PRIO_USER PRIO_USER | |
195 | }; | |
53c2cb76 RH |
196 | |
197 | ||
198 | __BEGIN_DECLS | |
199 | ||
200 | #ifdef __USE_GNU | |
201 | /* Modify and return resource limits of a process atomically. */ | |
202 | # ifndef __USE_FILE_OFFSET64 | |
203 | extern int prlimit (__pid_t __pid, enum __rlimit_resource __resource, | |
204 | const struct rlimit *__new_limit, | |
205 | struct rlimit *__old_limit) __THROW; | |
206 | # else | |
207 | # ifdef __REDIRECT_NTH | |
208 | extern int __REDIRECT_NTH (prlimit, (__pid_t __pid, | |
209 | enum __rlimit_resource __resource, | |
210 | const struct rlimit *__new_limit, | |
211 | struct rlimit *__old_limit), prlimit64); | |
212 | # else | |
213 | # define prlimit prlimit64 | |
214 | # endif | |
215 | # endif | |
216 | # ifdef __USE_LARGEFILE64 | |
217 | extern int prlimit64 (__pid_t __pid, enum __rlimit_resource __resource, | |
218 | const struct rlimit64 *__new_limit, | |
219 | struct rlimit64 *__old_limit) __THROW; | |
220 | # endif | |
221 | #endif | |
222 | ||
223 | __END_DECLS |