xref: /xnu-10002.61.3/libsyscall/wrappers/setpriority.c (revision 0f4c859e951fba394238ab619495c4e1d54d0f34)
1*0f4c859eSApple OSS Distributions /*
2*0f4c859eSApple OSS Distributions  * Copyright (c) 2014 Apple Computer, Inc. All rights reserved.
3*0f4c859eSApple OSS Distributions  *
4*0f4c859eSApple OSS Distributions  * @APPLE_LICENSE_HEADER_START@
5*0f4c859eSApple OSS Distributions  *
6*0f4c859eSApple OSS Distributions  * This file contains Original Code and/or Modifications of Original Code
7*0f4c859eSApple OSS Distributions  * as defined in and that are subject to the Apple Public Source License
8*0f4c859eSApple OSS Distributions  * Version 2.0 (the 'License'). You may not use this file except in
9*0f4c859eSApple OSS Distributions  * compliance with the License. Please obtain a copy of the License at
10*0f4c859eSApple OSS Distributions  * http://www.opensource.apple.com/apsl/ and read it before using this
11*0f4c859eSApple OSS Distributions  * file.
12*0f4c859eSApple OSS Distributions  *
13*0f4c859eSApple OSS Distributions  * The Original Code and all software distributed under the License are
14*0f4c859eSApple OSS Distributions  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
15*0f4c859eSApple OSS Distributions  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
16*0f4c859eSApple OSS Distributions  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
17*0f4c859eSApple OSS Distributions  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
18*0f4c859eSApple OSS Distributions  * Please see the License for the specific language governing rights and
19*0f4c859eSApple OSS Distributions  * limitations under the License.
20*0f4c859eSApple OSS Distributions  *
21*0f4c859eSApple OSS Distributions  * @APPLE_LICENSE_HEADER_END@
22*0f4c859eSApple OSS Distributions  */
23*0f4c859eSApple OSS Distributions 
24*0f4c859eSApple OSS Distributions #include <sys/resource.h>
25*0f4c859eSApple OSS Distributions #include <errno.h>
26*0f4c859eSApple OSS Distributions #include <mach/port.h>
27*0f4c859eSApple OSS Distributions 
28*0f4c859eSApple OSS Distributions extern int __setpriority(int which, id_t who, int prio);
29*0f4c859eSApple OSS Distributions extern void _pthread_clear_qos_tsd(mach_port_t);
30*0f4c859eSApple OSS Distributions 
31*0f4c859eSApple OSS Distributions /*
32*0f4c859eSApple OSS Distributions  * Stub function to account for special case return code from setpriority
33*0f4c859eSApple OSS Distributions  * when called with PRIO_DARWIN_THREAD.
34*0f4c859eSApple OSS Distributions  */
35*0f4c859eSApple OSS Distributions int
setpriority(int which,id_t who,int prio)36*0f4c859eSApple OSS Distributions setpriority(int which, id_t who, int prio)
37*0f4c859eSApple OSS Distributions {
38*0f4c859eSApple OSS Distributions 	int rv = __setpriority(which, who, prio);
39*0f4c859eSApple OSS Distributions 	if (which == PRIO_DARWIN_THREAD && rv == -2) {
40*0f4c859eSApple OSS Distributions 		_pthread_clear_qos_tsd(MACH_PORT_NULL);
41*0f4c859eSApple OSS Distributions 		rv = 0;
42*0f4c859eSApple OSS Distributions 	}
43*0f4c859eSApple OSS Distributions 
44*0f4c859eSApple OSS Distributions 	return rv;
45*0f4c859eSApple OSS Distributions }
46