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      1 /*
      2  * Copyright (c) 2015-2016 Dmitry V. Levin <ldv (at) 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 <asm/unistd.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 	struct {
     41 		uint32_t size;
     42 		uint32_t sched_policy;
     43 		uint64_t sched_flags;
     44 		int32_t  sched_nice;
     45 		uint32_t sched_priority;
     46 		uint64_t sched_runtime;
     47 		uint64_t sched_deadline;
     48 		uint64_t sched_period;
     49 	} *sched_attr = tail_alloc(sizeof(*sched_attr));
     50 
     51 	long rc = syscall(__NR_sched_getattr, 0xdeadface, NULL, 0, 0);
     52 	printf("sched_getattr\\(%d, NULL, 0, 0\\) += %s\n",
     53 		0xdeadface, sprintrc_grep(rc));
     54 
     55 	rc = syscall(__NR_sched_getattr, -1,
     56 		     sched_attr, 0xbadfaced, 0xc0defeed);
     57 	printf("sched_getattr\\(-1, %p, %u, %u\\) += %s\n",
     58 		sched_attr, 0xbadfaced, 0xc0defeed, sprintrc_grep(rc));
     59 
     60 	rc = syscall(__NR_sched_getattr, 0,
     61 		     sched_attr + 1, sizeof(*sched_attr), 0);
     62 	printf("sched_getattr\\(0, %p, %u, 0\\) += %s\n",
     63 		sched_attr + 1, (unsigned)sizeof(*sched_attr),
     64 		sprintrc_grep(rc));
     65 
     66 	if (syscall(__NR_sched_getattr, 0, sched_attr, sizeof(*sched_attr), 0))
     67 		perror_msg_and_skip("sched_getattr");
     68 
     69 	printf("sched_getattr\\(0, \\{size=%u, sched_policy=SCHED_[A-Z]+"
     70 	       ", sched_flags=%s, sched_nice=%d, sched_priority=%u"
     71 	       ", sched_runtime=%" PRIu64 ", sched_deadline=%" PRIu64
     72 	       ", sched_period=%" PRIu64 "\\}, %u, 0\\) += 0\n",
     73 	       sched_attr->size,
     74 	       sched_attr->sched_flags ? "SCHED_FLAG_RESET_ON_FORK" : "0",
     75 	       sched_attr->sched_nice,
     76 	       sched_attr->sched_priority,
     77 	       sched_attr->sched_runtime,
     78 	       sched_attr->sched_deadline,
     79 	       sched_attr->sched_period,
     80 	       (unsigned) sizeof(*sched_attr));
     81 
     82 	sched_attr->sched_flags |= 1;
     83 	if (syscall(__NR_sched_setattr, 0, sched_attr, 0))
     84 		perror_msg_and_skip("sched_setattr");
     85 
     86 	printf("sched_setattr\\(0, \\{size=%u, sched_policy=SCHED_[A-Z]+"
     87 	       ", sched_flags=%s, sched_nice=%d, sched_priority=%u"
     88 	       ", sched_runtime=%" PRIu64 ", sched_deadline=%" PRIu64
     89 	       ", sched_period=%" PRIu64 "\\}, 0\\) += 0\n",
     90 	       sched_attr->size,
     91 	       "SCHED_FLAG_RESET_ON_FORK",
     92 	       sched_attr->sched_nice,
     93 	       sched_attr->sched_priority,
     94 	       sched_attr->sched_runtime,
     95 	       sched_attr->sched_deadline,
     96 	       sched_attr->sched_period);
     97 
     98 	sched_attr->size = 0x90807060;
     99 	sched_attr->sched_policy = 0xca7faced;
    100 	sched_attr->sched_flags = 0xbadc0ded1057da7aULL;
    101 	sched_attr->sched_nice = 0xafbfcfdf;
    102 	sched_attr->sched_priority = 0xb8c8d8e8;
    103 	sched_attr->sched_runtime = 0xbadcaffedeadf157ULL;
    104 	sched_attr->sched_deadline = 0xc0de70a57badac75ULL;
    105 	sched_attr->sched_period = 0xded1ca7edda7aca7ULL;
    106 
    107 	rc = syscall(__NR_sched_setattr, 0xfacec0de, sched_attr, 0xbeeff00d);
    108 
    109 	printf("sched_setattr\\(%d, \\{size=%u, "
    110 		"sched_policy=%#x /\\* SCHED_\\?\\?\\? \\*/, "
    111 		"sched_flags=%#" PRIx64 " /\\* SCHED_FLAG_\\?\\?\\? \\*/, "
    112 		"sched_nice=%d, sched_priority=%u, sched_runtime=%" PRIu64 ", "
    113 		"sched_deadline=%" PRIu64 ", sched_period=%" PRIu64 "\\}, "
    114 		"%u\\) += %s\n",
    115 		0xfacec0de, sched_attr->size,
    116 		sched_attr->sched_policy,
    117 		sched_attr->sched_flags,
    118 		sched_attr->sched_nice,
    119 		sched_attr->sched_priority,
    120 		sched_attr->sched_runtime,
    121 		sched_attr->sched_deadline,
    122 		sched_attr->sched_period, 0xbeeff00d, sprintrc_grep(rc));
    123 
    124 	return 0;
    125 }
    126 
    127 #else
    128 
    129 SKIP_MAIN_UNDEFINED("__NR_sched_getattr && __NR_sched_setattr")
    130 
    131 #endif
    132