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/types.h> 29 #include <sys/sysctl.h> 30 #include <unistd.h> 31 #include <stdio.h> 32 #include <stdlib.h> 33 #include <sys/stat.h> 34 #include <sys/param.h> 35 #include <err.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 int pct; 49 50 if (nb == 0) { 51 getdf(&bl, &in); 52 size = in / op->incarnations; 53 54 pct = 90; 55 if (op->hog == 0) 56 pct = random_int(1, 90); 57 size = size / 100 * pct + 1; 58 59 size = size % 200; /* arbitrary limit depth */ 60 61 /* Resource requirements: */ 62 while (size > 0) { 63 reserve_in = 1 * size * op->incarnations; 64 reserve_bl = 4096 * size * op->incarnations; 65 if (reserve_bl <= bl && reserve_in <= in) 66 break; 67 size = size / 2; 68 } 69 if (size == 0) 70 reserve_bl = reserve_in = 0; 71 72 if (op->verbose > 1) 73 printf("mkdir(size=%lu, incarnations=%d). Free(%jdk, %jd), reserve(%jdk, %jd)\n", 74 size, op->incarnations, bl/1024, in, reserve_bl/1024, reserve_in); 75 reservedf(reserve_bl, reserve_in); 76 putval(size); 77 } else 78 size = getval(); 79 80 if (size == 0) 81 exit(0); 82 83 return (0); 84 } 85 86 void 87 cleanup(void) 88 { 89 } 90 91 static void 92 mkDir(char *path, int level) { 93 char newPath[MAXPATHLEN + 1]; 94 95 if (mkdir(path, 0770) == -1) { 96 warn("mkdir(%s), level %d. %s:%d", path, level, __FILE__, __LINE__); 97 size = level; 98 } else 99 chdir(path); 100 101 if (done_testing == 1) 102 size = level; 103 104 if (level < (int)size) { 105 sprintf(newPath,"d%d", level+1); 106 mkDir(newPath, level+1); 107 } 108 } 109 110 static void 111 rmDir(char *path, int level) { 112 char newPath[MAXPATHLEN + 1]; 113 114 if (level < (int)size) { 115 sprintf(newPath,"d%d", level+1); 116 rmDir(newPath, level+1); 117 } 118 chdir (".."); 119 if (rmdir(path) == -1) { 120 err(1, "rmdir(%s), %s:%d", path, __FILE__, __LINE__); 121 } 122 } 123 124 int 125 test(void) 126 { 127 char path[MAXPATHLEN + 1]; 128 129 umask(0); 130 sprintf(path,"p%05d.d%d", getpid(), 1); 131 mkDir(path, 1); 132 rmDir(path, 1); 133 134 return (0); 135 } 136