1 /*- 2 * Copyright (c) 2008 Peter Holm <pho@FreeBSD.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 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 */ 27 28 #include <sys/param.h> 29 #include <sys/stat.h> 30 #include <err.h> 31 #include <fcntl.h> 32 #include <stdio.h> 33 #include <stdlib.h> 34 #include <string.h> 35 #include <unistd.h> 36 37 #include "stress.h" 38 39 static unsigned long size; 40 41 int 42 setup(int nb) 43 { 44 int64_t in; 45 int64_t bl; 46 int64_t reserve_in; 47 int64_t reserve_bl; 48 49 umask(0); 50 51 if (nb == 0) { 52 getdf(&bl, &in); 53 size = in / op->incarnations; 54 55 if (size > 1000) 56 size = 1000; /* arbitrary limit number of files pr. dir */ 57 58 /* Resource requirements: */ 59 while (size > 0) { 60 reserve_in = 2 * size * op->incarnations + 2 * op->incarnations; 61 reserve_bl = 30 * size * op->incarnations; 62 if (reserve_bl <= bl && reserve_in <= in) 63 break; 64 size = size / 2; 65 } 66 if (size == 0) 67 reserve_bl = reserve_in = 0; 68 69 if (op->verbose > 1) 70 printf("rename(size=%lu, incarnations=%d). Free(%jdk, %jd), reserve(%jdk, %jd)\n", 71 size, op->incarnations, bl/1024, in, reserve_bl/1024, reserve_in); 72 reservedf(reserve_bl, reserve_in); 73 putval(size); 74 } else { 75 size = getval(); 76 } 77 if (size == 0) 78 exit(0); 79 80 return (0); 81 } 82 83 void 84 cleanup(void) 85 { 86 } 87 88 static void 89 test_rename(void) 90 { 91 int i, j; 92 pid_t pid; 93 char file1[128]; 94 char file2[128]; 95 int tfd; 96 97 pid = getpid(); 98 for (i = 0; i < (int)size; i++) { 99 sprintf(file1,"p%05d.%05d", pid, i); 100 if ((tfd = open(file1, O_RDONLY|O_CREAT, 0660)) == -1) 101 err(1, "openat(%s), %s:%d", file1, __FILE__, __LINE__); 102 close(tfd); 103 } 104 for (j = 0; j < 100 && done_testing == 0; j++) { 105 for (i = 0; i < (int)size; i++) { 106 sprintf(file1,"p%05d.%05d", pid, i); 107 sprintf(file2,"p%05d.%05d.togo", pid, i); 108 if (rename(file1, file2) == -1) 109 err(1, "rename(%s, %s). %s:%d", file1, file2, 110 __FILE__, __LINE__); 111 } 112 for (i = 0; i < (int)size; i++) { 113 sprintf(file1,"p%05d.%05d", pid, i); 114 sprintf(file2,"p%05d.%05d.togo", pid, i); 115 if (rename(file2, file1) == -1) 116 err(1, "rename(%s, %s). %s:%d", file2, file1, 117 __FILE__, __LINE__); 118 } 119 } 120 121 for (i = 0; i < (int)size; i++) { 122 sprintf(file1,"p%05d.%05d", pid, i); 123 if (unlink(file1) == -1) 124 err(1, "unlink(%s), %s:%d", file1, __FILE__, __LINE__); 125 } 126 } 127 128 int 129 test(void) 130 { 131 test_rename(); 132 133 return (0); 134 } 135