blob: 13397e199e75d4fa1e731dfa841b8becea667a02 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
|
/*
* This file and its contents are supplied under the terms of the
* Common Development and Distribution License ("CDDL"), version 1.0.
* You may only use this file in accordance with the terms of version
* 1.0 of the CDDL.
*
* A full copy of the text of the CDDL should have accompanied this
* source. A copy of the CDDL is also available via the Internet at
* http://www.illumos.org/license/CDDL.
*/
/*
* Copyright 2015 Joyent, Inc.
*/
#include <sys/errno.h>
#include <sys/systm.h>
#include <sys/lx_brand.h>
/* 'which' values. */
#define LX_IOPRIO_WHO_PROCESS 1
#define LX_IOPRIO_WHO_PGRP 2
#define LX_IOPRIO_WHO_USER 3
/*
* The possible values for the class. We report best effort (BE) as the class
* in use.
*/
#define LX_IOPRIO_CLASS_RT 1
#define LX_IOPRIO_CLASS_BE 2
#define LX_IOPRIO_CLASS_IDLE 3
/* Macro to determine the class from the input mask */
#define LX_IOPRIO_PRIO_CLASS(m) ((m) >> 13)
/* ARGSUSED */
long
lx_ioprio_get(int which, int who)
{
if (which < LX_IOPRIO_WHO_PROCESS || which > LX_IOPRIO_WHO_USER)
return (set_errno(EINVAL));
return (LX_IOPRIO_CLASS_BE);
}
/*
* We allow setting any valid class, even though it's ignored.
* We ignore the 'who' parameter which means that we're not searching for
* the specified target in order to return a specific errno in the case that
* the target does not exist.
*/
/* ARGSUSED */
long
lx_ioprio_set(int which, int who, int mask)
{
int class;
if (which < LX_IOPRIO_WHO_PROCESS || which > LX_IOPRIO_WHO_USER)
return (set_errno(EINVAL));
class = LX_IOPRIO_PRIO_CLASS(mask);
if (class < LX_IOPRIO_CLASS_RT || class > LX_IOPRIO_CLASS_IDLE)
return (set_errno(EINVAL));
return (0);
}
|
