1#!/bin/sh 2 3# 4# Copyright (c) 2016 EMC Corp. 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# 16# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26# SUCH DAMAGE. 27# 28 29# Looping thread seen: 30# https://people.freebsd.org/~pho/stress/log/kostik855.txt 31# Fixed by r293197. 32 33# Again on i386: 34# https://people.freebsd.org/~pho/stress/log/kostik867.txt 35# Fixed by r295716. 36 37. ../default.cfg 38 39odir=`pwd` 40cd /tmp 41sed '1,/^EOF/d' < $odir/$0 > posix_fadvise3.c 42mycc -o posix_fadvise3 -Wall -Wextra -O2 -g posix_fadvise3.c 43 44data=/tmp/posix_fadvise3.data 45dd if=/dev/zero of=$data bs=1m count=64 status=none 46/tmp/posix_fadvise3 47 48rm $data 49truncate -s 64m $data 50/tmp/posix_fadvise3 51 52rm -f /tmp/posix_fadvise3 posix_fadvise3.c $data 53exit 54EOF 55#include <err.h> 56#include <fcntl.h> 57#include <stdio.h> 58#include <stdlib.h> 59#include <unistd.h> 60 61#define LOOPS 10000 62#define N (128 * 1024 / (int)sizeof(u_int32_t)) 63 64u_int32_t r[N]; 65 66unsigned long 67makearg(void) 68{ 69 unsigned int i; 70 unsigned long val; 71 72 val = arc4random(); 73 i = arc4random() % 100; 74 if (i < 20) 75 val = val & 0xff; 76 if (i >= 20 && i < 40) 77 val = val & 0xffff; 78 if (i >= 40 && i < 60) 79 val = (unsigned long)(r) | (val & 0xffff); 80#if defined(__LP64__) 81 if (i >= 60) { 82 val = (val << 32) | arc4random(); 83 if (i > 80) 84 val = val & 0x00007fffffffffffUL; 85 } 86#endif 87 88 return(val); 89} 90 91int 92main(void) 93{ 94 off_t len, offset; 95 int advise, fd, i, j; 96 97 if ((fd = open("/tmp/posix_fadvise3.data", O_RDONLY)) == -1) 98 err(1, "open()"); 99 offset = 0; 100 len = 0x7fffffffffffffff; 101 advise = 4; 102 if (posix_fadvise(fd, offset, len, advise) == -1) 103 warn("posix_fadvise"); 104 close(fd); 105 106 for (i = 0; i < LOOPS; i++) { 107 for (j = 0; j < N; j++) 108 r[j] = arc4random(); 109 if ((fd = open("/tmp/posix_fadvise3.data", O_RDONLY)) == -1) 110 err(1, "open()"); 111 offset = makearg(); 112 len = makearg(); 113 advise = arc4random() % 6; 114 if (posix_fadvise(fd, offset, len, advise) == -1) 115 warn("posix_fadvise"); 116 close(fd); 117 } 118 119 return (0); 120} 121