1*e3723e1fSApple OSS Distributions /*
2*e3723e1fSApple OSS Distributions * Copyright (c) 2006 Apple Computer, Inc. All rights reserved.
3*e3723e1fSApple OSS Distributions *
4*e3723e1fSApple OSS Distributions * @APPLE_LICENSE_HEADER_START@
5*e3723e1fSApple OSS Distributions *
6*e3723e1fSApple OSS Distributions * This file contains Original Code and/or Modifications of Original Code
7*e3723e1fSApple OSS Distributions * as defined in and that are subject to the Apple Public Source License
8*e3723e1fSApple OSS Distributions * Version 2.0 (the 'License'). You may not use this file except in
9*e3723e1fSApple OSS Distributions * compliance with the License. Please obtain a copy of the License at
10*e3723e1fSApple OSS Distributions * http://www.opensource.apple.com/apsl/ and read it before using this
11*e3723e1fSApple OSS Distributions * file.
12*e3723e1fSApple OSS Distributions *
13*e3723e1fSApple OSS Distributions * The Original Code and all software distributed under the License are
14*e3723e1fSApple OSS Distributions * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
15*e3723e1fSApple OSS Distributions * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
16*e3723e1fSApple OSS Distributions * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
17*e3723e1fSApple OSS Distributions * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
18*e3723e1fSApple OSS Distributions * Please see the License for the specific language governing rights and
19*e3723e1fSApple OSS Distributions * limitations under the License.
20*e3723e1fSApple OSS Distributions *
21*e3723e1fSApple OSS Distributions * @APPLE_LICENSE_HEADER_END@
22*e3723e1fSApple OSS Distributions */
23*e3723e1fSApple OSS Distributions #include <errno.h>
24*e3723e1fSApple OSS Distributions #include <sys/resource.h>
25*e3723e1fSApple OSS Distributions #include <mach/port.h>
26*e3723e1fSApple OSS Distributions
27*e3723e1fSApple OSS Distributions extern int __iopolicysys(int, struct _iopol_param_t *);
28*e3723e1fSApple OSS Distributions extern void _pthread_clear_qos_tsd(mach_port_t);
29*e3723e1fSApple OSS Distributions
30*e3723e1fSApple OSS Distributions int
getiopolicy_np(int iotype,int scope)31*e3723e1fSApple OSS Distributions getiopolicy_np(int iotype, int scope)
32*e3723e1fSApple OSS Distributions {
33*e3723e1fSApple OSS Distributions int policy, error;
34*e3723e1fSApple OSS Distributions struct _iopol_param_t iop_param;
35*e3723e1fSApple OSS Distributions
36*e3723e1fSApple OSS Distributions /* Do not sanity check iotype and scope, leave it to kernel. */
37*e3723e1fSApple OSS Distributions
38*e3723e1fSApple OSS Distributions iop_param.iop_scope = scope;
39*e3723e1fSApple OSS Distributions iop_param.iop_iotype = iotype;
40*e3723e1fSApple OSS Distributions error = __iopolicysys(IOPOL_CMD_GET, &iop_param);
41*e3723e1fSApple OSS Distributions if (error != 0) {
42*e3723e1fSApple OSS Distributions errno = error;
43*e3723e1fSApple OSS Distributions policy = -1;
44*e3723e1fSApple OSS Distributions goto exit;
45*e3723e1fSApple OSS Distributions }
46*e3723e1fSApple OSS Distributions
47*e3723e1fSApple OSS Distributions policy = iop_param.iop_policy;
48*e3723e1fSApple OSS Distributions
49*e3723e1fSApple OSS Distributions exit:
50*e3723e1fSApple OSS Distributions return policy;
51*e3723e1fSApple OSS Distributions }
52*e3723e1fSApple OSS Distributions
53*e3723e1fSApple OSS Distributions int
setiopolicy_np(int iotype,int scope,int policy)54*e3723e1fSApple OSS Distributions setiopolicy_np(int iotype, int scope, int policy)
55*e3723e1fSApple OSS Distributions {
56*e3723e1fSApple OSS Distributions /* kernel validates the indiv values, no need to repeat it */
57*e3723e1fSApple OSS Distributions struct _iopol_param_t iop_param;
58*e3723e1fSApple OSS Distributions
59*e3723e1fSApple OSS Distributions iop_param.iop_scope = scope;
60*e3723e1fSApple OSS Distributions iop_param.iop_iotype = iotype;
61*e3723e1fSApple OSS Distributions iop_param.iop_policy = policy;
62*e3723e1fSApple OSS Distributions
63*e3723e1fSApple OSS Distributions int rv = __iopolicysys(IOPOL_CMD_SET, &iop_param);
64*e3723e1fSApple OSS Distributions if (rv == -2) {
65*e3723e1fSApple OSS Distributions /* not an actual error but indication that __iopolicysys removed the thread QoS */
66*e3723e1fSApple OSS Distributions _pthread_clear_qos_tsd(MACH_PORT_NULL);
67*e3723e1fSApple OSS Distributions rv = 0;
68*e3723e1fSApple OSS Distributions }
69*e3723e1fSApple OSS Distributions
70*e3723e1fSApple OSS Distributions return rv;
71*e3723e1fSApple OSS Distributions }
72