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 <errno.h> 32 #include <fcntl.h> 33 #include <stdio.h> 34 #include <stdlib.h> 35 #include <string.h> 36 #include <unistd.h> 37 38 #include "stress.h" 39 40 static unsigned long size; 41 42 int 43 setup(int nb) 44 { 45 int64_t in; 46 int64_t bl; 47 int64_t reserve_in; 48 int64_t reserve_bl; 49 50 umask(0); 51 52 if (nb == 0) { 53 getdf(&bl, &in); 54 size = in / op->incarnations; 55 56 if (size > 1000) 57 size = 1000; /* arbitrary limit number of files pr. dir */ 58 59 /* Resource requirements: */ 60 while (size > 0) { 61 reserve_in = 2 * size * op->incarnations + 2 * op->incarnations; 62 reserve_bl = 30 * size * op->incarnations; 63 if (reserve_bl <= bl && reserve_in <= in) 64 break; 65 size = size / 2; 66 } 67 if (size == 0) 68 reserve_bl = reserve_in = 0; 69 70 if (op->verbose > 1) 71 printf("rename(size=%lu, incarnations=%d). Free(%jdk, %jd), reserve(%jdk, %jd)\n", 72 size, op->incarnations, bl/1024, in, reserve_bl/1024, reserve_in); 73 reservedf(reserve_bl, reserve_in); 74 putval(size); 75 } else { 76 size = getval(); 77 } 78 if (size == 0) 79 exit(0); 80 81 return (0); 82 } 83 84 void 85 cleanup(void) 86 { 87 } 88 89 static void 90 test_rename(void) 91 { 92 int i, j; 93 int errnotmp; 94 pid_t pid; 95 char file1[128]; 96 char file2[128]; 97 98 pid = getpid(); 99 for (i = 0; i < (int)size; i++) { 100 sprintf(file1,"p%05d.%05d", pid, i); 101 if (mkdir(file1, 0660) == -1) { 102 j = i; 103 errnotmp = errno; 104 while (j > 0) { 105 j--; 106 sprintf(file1,"p%05d.%05d", pid, j); 107 rmdir(file1); 108 } 109 errno = errnotmp; 110 sprintf(file1,"p%05d.%05d", pid, i); 111 err(1, "mkdir(%s), %s:%d", file1, __FILE__, __LINE__); 112 } 113 } 114 for (j = 0; j < 100 && done_testing == 0; j++) { 115 for (i = 0; i < (int)size; i++) { 116 sprintf(file1,"p%05d.%05d", pid, i); 117 sprintf(file2,"p%05d.%05d.togo", pid, i); 118 if (rename(file1, file2) == -1) 119 err(1, "rename(%s, %s). %s:%d", file1, file2, 120 __FILE__, __LINE__); 121 } 122 for (i = 0; i < (int)size; i++) { 123 sprintf(file1,"p%05d.%05d", pid, i); 124 sprintf(file2,"p%05d.%05d.togo", pid, i); 125 if (rename(file2, file1) == -1) 126 err(1, "rename(%s, %s). %s:%d", file2, file1, 127 __FILE__, __LINE__); 128 } 129 } 130 131 for (i = 0; i < (int)size; i++) { 132 sprintf(file1,"p%05d.%05d", pid, i); 133 if (rmdir(file1) == -1) 134 err(1, "unlink(%s), %s:%d", file1, __FILE__, __LINE__); 135 } 136 } 137 138 int 139 test(void) 140 { 141 test_rename(); 142 143 return (0); 144 } 145