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 <unistd.h> 31 #include <err.h> 32 #include <errno.h> 33 #include <fcntl.h> 34 #include <stdio.h> 35 #include <stdlib.h> 36 #include <string.h> 37 38 #include "stress.h" 39 40 static char path[128]; 41 static unsigned long size; 42 43 int 44 setup(int nb) 45 { 46 char file1[512]; 47 int64_t in; 48 int64_t bl; 49 int64_t reserve_in; 50 int64_t reserve_bl; 51 int i; 52 53 umask(0); 54 55 if (nb == 0) { 56 getdf(&bl, &in); 57 size = in / op->incarnations; 58 59 if (size > 1000) 60 size = 1000; /* arbitrary limit number of files pr. dir */ 61 62 /* Resource requirements: */ 63 while (size > 0) { 64 reserve_in = 2 * size * op->incarnations + 2 * op->incarnations; 65 reserve_bl = 30 * size * op->incarnations; 66 if (reserve_bl <= bl && reserve_in <= in) 67 break; 68 size = size / 2; 69 } 70 if (size == 0) 71 reserve_bl = reserve_in = 0; 72 73 if (op->verbose > 1) 74 printf("rename(size=%lu, incarnations=%d). Free(%jdk, %jd), reserve(%jdk, %jd)\n", 75 size, op->incarnations, bl/1024, in, reserve_bl/1024, reserve_in); 76 reservedf(reserve_bl, reserve_in); 77 putval(size); 78 } else { 79 size = getval(); 80 } 81 if (size == 0) 82 exit(0); 83 84 sprintf(path, "%s.%05d", getprogname(), getpid()); 85 if (mkdir(path, 0770) == -1) 86 err(1, "mkdir(%s), %s:%d", path, __FILE__, __LINE__); 87 88 /* 89 * The value 97 was determined by figuring out how many 255 length 90 * names would cause us to overflow into indirect blocks w/ the 91 * default UFS parameters. 92 */ 93 for (i = 0; i < 97; i++) { 94 sprintf(file1, "%s/%0255d", path, i); 95 if (mkdir(file1, 0770) == -1) 96 err(1, "mkdir(%s), %s:%d", file1, __FILE__, __LINE__); 97 } 98 return (0); 99 } 100 101 void 102 cleanup(void) 103 { 104 char file1[512]; 105 int i; 106 107 /* see comment above */ 108 for (i = 0; i < 97; i++) { 109 sprintf(file1, "%s/%0255d", path, i); 110 if (rmdir(file1) == -1) 111 warn("rmdir(%s), %s:%d", file1, __FILE__, __LINE__); 112 } 113 if (rmdir(path) == -1) 114 warn("rmdir(%s), %s:%d", path, __FILE__, __LINE__); 115 } 116 117 static void 118 test_rename(void) 119 { 120 int i, j; 121 int errnotmp; 122 pid_t pid; 123 char file1[128]; 124 char file2[128]; 125 126 pid = getpid(); 127 for (i = 0; i < (int)size; i++) { 128 sprintf(file1,"p%05d.%05d", pid, i); 129 if (mkdir(file1, 0660) == -1) { 130 j = i; 131 errnotmp = errno; 132 while (j > 0) { 133 j--; 134 sprintf(file1,"p%05d.%05d", pid, j); 135 rmdir(file1); 136 } 137 errno = errnotmp; 138 sprintf(file1,"p%05d.%05d", pid, i); 139 err(1, "mkdir(%s), %s:%d", file1, __FILE__, __LINE__); 140 } 141 } 142 for (j = 0; j < 100 && done_testing == 0; j++) { 143 for (i = 0; i < (int)size; i++) { 144 sprintf(file1,"p%05d.%05d", pid, i); 145 sprintf(file2,"%s/p%05d.%05d.togo", path, pid, i); 146 if (rename(file1, file2) == -1) 147 err(1, "rename(%s, %s). %s:%d", file1, file2, 148 __FILE__, __LINE__); 149 } 150 for (i = 0; i < (int)size; i++) { 151 sprintf(file1,"p%05d.%05d", pid, i); 152 sprintf(file2,"%s/p%05d.%05d.togo", path, pid, i); 153 if (rename(file2, file1) == -1) 154 err(1, "rename(%s, %s). %s:%d", file2, file1, 155 __FILE__, __LINE__); 156 } 157 } 158 159 for (i = 0; i < (int)size; i++) { 160 sprintf(file1,"p%05d.%05d", pid, i); 161 if (rmdir(file1) == -1) 162 err(1, "rmdir(%s), %s:%d", file1, __FILE__, __LINE__); 163 } 164 } 165 166 int 167 test(void) 168 { 169 test_rename(); 170 171 return (0); 172 } 173