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 <sys/stat.h> 33 #include <sys/param.h> 34 #include <sys/mount.h> 35 #include <err.h> 36 #include <errno.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 int pct; 47 int64_t in; 48 int64_t bl; 49 int64_t reserve_in; 50 int64_t reserve_bl; 51 52 53 umask(0); 54 path[0] = 0; 55 if (nb == 0) { 56 getdf(&bl, &in); 57 size = in / op->incarnations; 58 59 pct = 90; 60 if (op->hog == 0) 61 pct = random_int(1, 90); 62 size = size / 100 * pct + 1; 63 64 if (size > 20000) 65 size = 20000; /* arbitrary limit number of files pr. dir */ 66 if (size > 1000) 67 size = 1000; /* XXX Soft Update */ 68 69 /* Resource requirements: */ 70 while (size > 0) { 71 reserve_in = 1 * size * op->incarnations + size; 72 reserve_bl = 29 * size * op->incarnations; 73 // printf("size = %lu, reserve(%jd, %jd)\n", size, reserve_bl/1024, reserve_in); 74 if (reserve_bl <= bl && reserve_in <= in) 75 break; 76 size--; 77 } 78 if (size == 0) 79 reserve_bl = reserve_in = 0; 80 81 if (op->verbose > 1) 82 printf("creat(size=%lu, incarnations=%d). Free(%jdk, %jd), reserve(%jdk, %jd)\n", 83 size, op->incarnations, bl/1024, in, reserve_bl/1024, reserve_in); 84 reservedf(reserve_bl, reserve_in); 85 putval(size); 86 } else { 87 size = getval(); 88 } 89 90 if (size == 0) 91 exit(1); 92 sprintf(path,"%s.%05d", getprogname(), getpid()); 93 if (mkdir(path, 0770) < 0) 94 err(1, "mkdir(%s), %s:%d", path, __FILE__, __LINE__); 95 96 if (chdir(path) == -1) 97 err(1, "chdir(%s), %s:%d", path, __FILE__, __LINE__); 98 99 return (0); 100 } 101 102 void 103 cleanup(void) 104 { 105 (void)chdir(".."); 106 if (path[0] != 0 && rmdir(path) == -1) { 107 warn("rmdir(%s), %s:%d", path, __FILE__, __LINE__); 108 } 109 } 110 111 int 112 test(void) 113 { 114 int fd, i, j; 115 pid_t pid; 116 char file[128]; 117 118 pid = getpid(); 119 for (j = 0; j < size && done_testing == 0; j++) { 120 sprintf(file,"p%05d.%05d", pid, j); 121 if ((fd = creat(file, 0660)) == -1) { 122 if (errno != EINTR) { 123 warn("creat(%s). %s:%d", file, __FILE__, __LINE__); 124 break; 125 } 126 } 127 if (fd != -1 && close(fd) == -1) 128 err(2, "close(%d)", j); 129 130 } 131 132 for (i = --j; i >= 0; i--) { 133 sprintf(file,"p%05d.%05d", pid, i); 134 if (unlink(file) == -1) 135 err(3, "unlink(%s)", file); 136 137 } 138 139 return (0); 140 } 141