1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2 #ifndef _UAPI_LINUX_RESOURCE_H
3 #define _UAPI_LINUX_RESOURCE_H
4 
5 #include <linux/time.h>
6 #include <linux/types.h>
7 
8 /*
9  * Resource control/accounting header file for linux
10  */
11 
12 /*
13  * Definition of struct rusage taken from BSD 4.3 Reno
14  *
15  * We don't support all of these yet, but we might as well have them....
16  * Otherwise, each time we add new items, programs which depend on this
17  * structure will lose.  This reduces the chances of that happening.
18  */
19 #define	RUSAGE_SELF	0
20 #define	RUSAGE_CHILDREN	(-1)
21 #define RUSAGE_BOTH	(-2)		/* sys_wait4() uses this */
22 #define	RUSAGE_THREAD	1		/* only the calling thread */
23 
24 struct	rusage {
25 	struct __kernel_old_timeval ru_utime;	/* user time used */
26 	struct __kernel_old_timeval ru_stime;	/* system time used */
27 	__kernel_long_t	ru_maxrss;	/* maximum resident set size */
28 	__kernel_long_t	ru_ixrss;	/* integral shared memory size */
29 	__kernel_long_t	ru_idrss;	/* integral unshared data size */
30 	__kernel_long_t	ru_isrss;	/* integral unshared stack size */
31 	__kernel_long_t	ru_minflt;	/* page reclaims */
32 	__kernel_long_t	ru_majflt;	/* page faults */
33 	__kernel_long_t	ru_nswap;	/* swaps */
34 	__kernel_long_t	ru_inblock;	/* block input operations */
35 	__kernel_long_t	ru_oublock;	/* block output operations */
36 	__kernel_long_t	ru_msgsnd;	/* messages sent */
37 	__kernel_long_t	ru_msgrcv;	/* messages received */
38 	__kernel_long_t	ru_nsignals;	/* signals received */
39 	__kernel_long_t	ru_nvcsw;	/* voluntary context switches */
40 	__kernel_long_t	ru_nivcsw;	/* involuntary " */
41 };
42 
43 struct rlimit {
44 	__kernel_ulong_t	rlim_cur;
45 	__kernel_ulong_t	rlim_max;
46 };
47 
48 #define RLIM64_INFINITY		(~0ULL)
49 
50 struct rlimit64 {
51 	__u64 rlim_cur;
52 	__u64 rlim_max;
53 };
54 
55 #define	PRIO_MIN	(-20)
56 #define	PRIO_MAX	20
57 
58 #define	PRIO_PROCESS	0
59 #define	PRIO_PGRP	1
60 #define	PRIO_USER	2
61 
62 /*
63  * Limit the stack by to some sane default: root can always
64  * increase this limit if needed..  8MB seems reasonable.
65  */
66 #define _STK_LIM	(8*1024*1024)
67 
68 /*
69  * Limit the amount of locked memory by some sane default:
70  * root can always increase this limit if needed.
71  *
72  * The main use-cases are (1) preventing sensitive memory
73  * from being swapped; (2) real-time operations; (3) via
74  * IOURING_REGISTER_BUFFERS.
75  *
76  * The first two don't need much. The latter will take as
77  * much as it can get. 8MB is a reasonably sane default.
78  */
79 #define MLOCK_LIMIT	(8*1024*1024)
80 
81 /*
82  * Due to binary compatibility, the actual resource numbers
83  * may be different for different linux versions..
84  */
85 #include <asm/resource.h>
86 
87 
88 #endif /* _UAPI_LINUX_RESOURCE_H */
89