1 /* 2 * Check decoding of ioprio_get and ioprio_set syscalls. 3 * 4 * Copyright (c) 2016 Eugene Syromyatnikov <evgsyr (at) gmail.com> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 #include "tests.h" 31 32 #include <asm/unistd.h> 33 34 #if defined(__NR_ioprio_get) && defined(__NR_ioprio_set) 35 36 # include <stdio.h> 37 # include <unistd.h> 38 39 enum { 40 IOPRIO_CLASS_NONE, 41 IOPRIO_CLASS_RT, 42 IOPRIO_CLASS_BE, 43 IOPRIO_CLASS_IDLE 44 }; 45 46 # include "xlat.h" 47 # include "xlat/ioprio_class.h" 48 49 void 50 print_ioprio(unsigned long val) 51 { 52 printf(" (IOPRIO_PRIO_VALUE("); 53 printxval(ioprio_class, val >> 13, "IOPRIO_CLASS_???"); 54 printf(", %d))", (int) (val & 0x1fff)); 55 } 56 57 int 58 main(void) 59 { 60 static const kernel_ulong_t bogus_which = 61 (kernel_ulong_t) 0xdeadfacefa57beefULL; 62 static const kernel_ulong_t bogus_who = 63 (kernel_ulong_t) 0xbadc0dedda7a1057ULL; 64 static const kernel_ulong_t bogus_ioprio = 65 (kernel_ulong_t) 0xdec0ded1facefeedULL; 66 static const char * const bogus_ioprio_str = 67 "IOPRIO_PRIO_VALUE(0x7d677 /* IOPRIO_CLASS_??? */, 7917)"; 68 69 long rc; 70 71 rc = syscall(__NR_ioprio_get, bogus_which, bogus_who); 72 printf("ioprio_get(%#x /* IOPRIO_WHO_??? */, %d) = %s\n", 73 (int) bogus_which, (int) bogus_who, sprintrc(rc)); 74 75 rc = syscall(__NR_ioprio_get, 1, 0); 76 printf("ioprio_get(IOPRIO_WHO_PROCESS, 0) = %s", sprintrc(rc)); 77 78 if (rc >= -1) 79 print_ioprio(rc); 80 81 puts(""); 82 83 rc = syscall(__NR_ioprio_set, 2, 0, 8191); 84 printf("ioprio_set(IOPRIO_WHO_PGRP, 0, " 85 "IOPRIO_PRIO_VALUE(IOPRIO_CLASS_NONE, 8191)) = %s\n", 86 sprintrc(rc)); 87 88 rc = syscall(__NR_ioprio_set, bogus_which, bogus_who, bogus_ioprio); 89 printf("ioprio_set(%#x /* IOPRIO_WHO_??? */, %d, %s) = %s\n", 90 (int) bogus_which, (int) bogus_who, bogus_ioprio_str, 91 sprintrc(rc)); 92 93 puts("+++ exited with 0 +++"); 94 95 return 0; 96 } 97 98 #else 99 100 SKIP_MAIN_UNDEFINED("__NR_ioprio_get && __NR_ioprio_set"); 101 102 #endif 103
