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 <unistd.h> 29 #include <stdio.h> 30 #include <stdlib.h> 31 #include <fcntl.h> 32 #include <string.h> 33 #include <sys/stat.h> 34 #include <sys/param.h> 35 #include <err.h> 36 37 #include "stress.h" 38 39 static char path[128]; 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 > 100) 57 size = 100; /* arbitrary limit number of files pr. dir */ 58 59 /* Resource requirements: */ 60 while (size > 0) { 61 reserve_in = 1 * size * op->incarnations + 2 * op->incarnations; 62 reserve_bl = 100 * size * op->incarnations; 63 // printf("size = %lu, reserve(%jd, %jd)\n", size, reserve_bl/1024, reserve_in); 64 if (reserve_bl <= bl && reserve_in <= in) 65 break; 66 size--; 67 } 68 if (size == 0) 69 reserve_bl = reserve_in = 0; 70 71 if (op->verbose > 1) 72 printf("rename(size=%lu, incarnations=%d). Free(%jdk, %jd), reserve(%jdk, %jd)\n", 73 size, op->incarnations, bl/1024, in, reserve_bl/1024, reserve_in); 74 reservedf(reserve_bl, reserve_in); 75 putval(size); 76 } else { 77 size = getval(); 78 } 79 80 sprintf(path,"%s.%05d", getprogname(), getpid()); 81 if (mkdir(path, 0770) < 0) 82 err(1, "mkdir(%s), %s:%d", path, __FILE__, __LINE__); 83 if (chdir(path) == -1) 84 err(1, "chdir(%s), %s:%d", path, __FILE__, __LINE__); 85 86 return (0); 87 } 88 89 void 90 cleanup(void) 91 { 92 (void)system("rm -f p*"); 93 (void)chdir(".."); 94 if (rmdir(path) == -1) 95 warn("rmdir(%s), %s:%d", path, __FILE__, __LINE__); 96 } 97 98 static void 99 test_rename(void) 100 { 101 int i, j; 102 pid_t pid; 103 char file1[128]; 104 char file2[128]; 105 int tfd; 106 107 pid = getpid(); 108 for (i = 0; i < size; i++) { 109 sprintf(file1,"p%05d.%05d", pid, i); 110 if ((tfd = open(file1, O_RDONLY|O_CREAT, 0660)) == -1) 111 err(1, "openat(%s), %s:%d", file1, __FILE__, __LINE__); 112 close(tfd); 113 } 114 for (j = 0; j < 100; j++) { 115 for (i = 0; i < 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 < 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 < size; i++) { 132 sprintf(file1,"p%05d.%05d", pid, i); 133 if (unlink(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