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