granicus.if.org Git - strace/blob - tests/sched_xetattr.c

   1 /*
   2  * Copyright (c) 2015-2016 Dmitry V. Levin <ldv@altlinux.org>
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. The name of the author may not be used to endorse or promote products
  14  *    derived from this software without specific prior written permission.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  26  */
  27
  28 #include "tests.h"
  29 #include <sys/syscall.h>
  30
  31 #if defined __NR_sched_getattr && defined __NR_sched_setattr
  32
  33 # include <inttypes.h>
  34 # include <stdio.h>
  35 # include <unistd.h>
  36
  37 int
  38 main(void)
  39 {
  40         static union {
  41                 struct {
  42                         uint32_t size;
  43                         uint32_t sched_policy;
  44                         uint64_t sched_flags;
  45                         uint32_t sched_nice;
  46                         uint32_t sched_priority;
  47                         uint64_t sched_runtime;
  48                         uint64_t sched_deadline;
  49                         uint64_t sched_period;
  50                 } attr;
  51                 char buf[256];
  52         } sched;
  53
  54         if (syscall(__NR_sched_getattr, 0, &sched, sizeof(sched), 0))
  55                 perror_msg_and_skip("sched_getattr");
  56
  57         printf("sched_getattr\\(0, \\{size=%u, sched_policy=SCHED_[A-Z]+, sched_flags=%s, sched_nice=%u, sched_priority=%u, sched_runtime=%" PRIu64 ", sched_deadline=%" PRIu64 ", sched_period=%" PRIu64 "\\}, 256, 0\\) += 0\n",
  58                 sched.attr.size,
  59                 sched.attr.sched_flags ? "SCHED_FLAG_RESET_ON_FORK" : "0",
  60                 sched.attr.sched_nice,
  61                 sched.attr.sched_priority,
  62                 sched.attr.sched_runtime,
  63                 sched.attr.sched_deadline,
  64                 sched.attr.sched_period);
  65
  66         sched.attr.sched_flags |= 1;
  67         if (syscall(__NR_sched_setattr, 0, &sched, 0))
  68                 perror_msg_and_skip("sched_setattr");
  69
  70         printf("sched_setattr\\(0, \\{size=%u, sched_policy=SCHED_[A-Z]+, sched_flags=%s, sched_nice=%u, sched_priority=%u, sched_runtime=%" PRIu64 ", sched_deadline=%" PRIu64 ", sched_period=%" PRIu64 "\\}, 0\\) += 0\n",
  71                 sched.attr.size,
  72                 "SCHED_FLAG_RESET_ON_FORK",
  73                 sched.attr.sched_nice,
  74                 sched.attr.sched_priority,
  75                 sched.attr.sched_runtime,
  76                 sched.attr.sched_deadline,
  77                 sched.attr.sched_period);
  78
  79         return 0;
  80 }
  81
  82 #else
  83
  84 SKIP_MAIN_UNDEFINED("__NR_sched_getattr && __NR_sched_setattr")
  85
  86 #endif