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annotate usr/src/test/zfs-tests/cmd/file_write/file_write.c @ 13899:0bcf78798346

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3311 Want a test framework for arbitrary OS unit tests 3312 Add a testrunner package for OS unit tests 3313 Add a testrunner package to convert ZFS tests from STF Reviewed by: Matt Ahrens <matthew.ahrens@delphix.com> Reviewed by: Will Guyette <will.guyette@delphix.com> Reviewed by: Dan Kimmel <dan.kimmel@delphix.com> Reviewed by: Adam Leventhal <ahl@delphix.com> Reviewed by: Henrik Mattson <henrik.mattson@delphix.com> Reviewed by: Sonu Pillai <sonu.pillai@delphix.com> Reviewed by: Christopher Siden <chris.siden@delphix.com> Reviewed by: George Wilson <george.wilson@delphix.com> Reviewed by: Richard Lowe <richlowe@richlowe.net> Approved by: Richard Lowe <richlowe@richlowe.net>
author John Wren Kennedy <john.kennedy@delphix.com>
date Wed, 05 Dec 2012 22:04:50 -0500
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13899
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1 /*
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2 * CDDL HEADER START
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3 *
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4 * The contents of this file are subject to the terms of the
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5 * Common Development and Distribution License (the "License").
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6 * You may not use this file except in compliance with the License.
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7 *
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8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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9 * or http://www.opensolaris.org/os/licensing.
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10 * See the License for the specific language governing permissions
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11 * and limitations under the License.
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12 *
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13 * When distributing Covered Code, include this CDDL HEADER in each
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14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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15 * If applicable, add the following below this CDDL HEADER, with the
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16 * fields enclosed by brackets "[]" replaced with your own identifying
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17 * information: Portions Copyright [yyyy] [name of copyright owner]
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18 *
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19 * CDDL HEADER END
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20 */
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21
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22 /*
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23 * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
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24 * Use is subject to license terms.
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25 */
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26
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27 #include "../file_common.h"
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28 #include <libgen.h>
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29
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30 static unsigned char bigbuffer[BIGBUFFERSIZE];
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31
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32 /*
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33 * Writes (or appends) a given value to a file repeatedly.
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34 * See header file for defaults.
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35 */
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36
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37 static void usage(void);
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38
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39 int
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40 main(int argc, char **argv)
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41 {
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42 int bigfd;
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43 int c;
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44 int oflag = 0;
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45 int err = 0;
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46 int k;
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47 long i;
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48 int64_t good_writes = 0;
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49 uchar_t nxtfillchar;
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50 /*
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51 * Default Parameters
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52 */
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53 int write_count = BIGFILESIZE;
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54 uchar_t fillchar = DATA;
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55 int block_size = BLOCKSZ;
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56 char *filename = NULL;
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57 char *operation = NULL;
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58 offset_t noffset, offset = 0;
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59 int verbose = 0;
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60 int rsync = 0;
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61 int wsync = 0;
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62
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63 /*
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64 * Process Arguments
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65 */
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66 while ((c = getopt(argc, argv, "b:c:d:s:f:o:vwr")) != -1) {
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67 switch (c) {
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68 case 'b':
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69 block_size = atoi(optarg);
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70 break;
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71 case 'c':
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72 write_count = atoi(optarg);
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73 break;
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74 case 'd':
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75 fillchar = atoi(optarg);
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76 break;
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77 case 's':
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78 offset = atoll(optarg);
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79 break;
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80 case 'f':
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81 filename = optarg;
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82 break;
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83 case 'o':
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84 operation = optarg;
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85 break;
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86 case 'v':
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87 verbose = 1;
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88 break;
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89 case 'w':
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90 wsync = 1;
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91 break;
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92 case 'r':
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93 rsync = 1;
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94 break;
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95 case '?':
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96 (void) printf("unknown arg %c\n", optopt);
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97 usage();
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98 break;
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99 }
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100 }
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101
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102 /*
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103 * Validate Parameters
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104 */
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105 if (!filename) {
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106 (void) printf("Filename not specified (-f <file>)\n");
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107 err++;
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108 }
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109
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110 if (!operation) {
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111 (void) printf("Operation not specified (-o <operation>).\n");
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112 err++;
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113 }
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114
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115 if (block_size > BIGBUFFERSIZE) {
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116 (void) printf("block_size is too large max==%d.\n",
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117 BIGBUFFERSIZE);
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118 err++;
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119 }
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120
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121 if (err) usage();
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122
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123 /*
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124 * Prepare the buffer and determine the requested operation
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125 */
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126 nxtfillchar = fillchar;
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127 k = 0;
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128
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129 for (i = 0; i < block_size; i++) {
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130 bigbuffer[i] = nxtfillchar;
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131
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132 if (fillchar == 0) {
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133 if ((k % DATA_RANGE) == 0) {
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134 k = 0;
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135 }
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136 nxtfillchar = k++;
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137 }
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138 }
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139
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140 /*
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141 * using the strncmp of operation will make the operation match the
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142 * first shortest match - as the operations are unique from the first
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143 * character this means that we match single character operations
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144 */
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145 if ((strncmp(operation, "create", strlen(operation) + 1)) == 0 ||
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146 (strncmp(operation, "overwrite", strlen(operation) + 1)) == 0) {
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147 oflag = (O_RDWR|O_CREAT);
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148 } else if ((strncmp(operation, "append", strlen(operation) + 1)) == 0) {
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149 oflag = (O_RDWR|O_APPEND);
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150 } else {
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151 (void) printf("valid operations are <create|append> not '%s'\n",
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152 operation);
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153 usage();
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154 }
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155
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156 if (rsync) {
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157 oflag = oflag | O_RSYNC;
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158 }
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159
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160 if (wsync) {
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161 oflag = oflag | O_SYNC;
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162 }
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163
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164 /*
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165 * Given an operation (create/overwrite/append), open the file
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166 * accordingly and perform a write of the appropriate type.
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167 */
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168 if ((bigfd = open(filename, oflag, 0666)) == -1) {
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169 (void) printf("open %s: failed [%s]%d. Aborting!\n", filename,
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170 strerror(errno), errno);
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171 exit(errno);
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172 }
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173 noffset = llseek(bigfd, offset, SEEK_SET);
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174 if (noffset != offset) {
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175 (void) printf("llseek %s (%lld/%lld) failed [%s]%d.Aborting!\n",
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176 filename, offset, noffset, strerror(errno), errno);
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177 exit(errno);
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178 }
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179
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180 if (verbose) {
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181 (void) printf("%s: block_size = %d, write_count = %d, "
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182 "offset = %lld, data = %s%d\n", filename, block_size,
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183 write_count, offset,
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184 (fillchar == 0) ? "0->" : "",
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185 (fillchar == 0) ? DATA_RANGE : fillchar);
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186 }
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187
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188 for (i = 0; i < write_count; i++) {
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189 ssize_t n;
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190
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191 if ((n = write(bigfd, &bigbuffer, block_size)) == -1) {
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192 (void) printf("write failed (%ld), good_writes = %lld, "
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193 "error: %s[%d]\n", (long)n, good_writes,
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194 strerror(errno),
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195 errno);
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196 exit(errno);
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197 }
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198 good_writes++;
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199 }
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200
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201 if (verbose) {
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202 (void) printf("Success: good_writes = %lld (%lld)\n",
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203 good_writes, (good_writes * block_size));
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204 }
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205
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206 return (0);
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207 }
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208
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209 static void
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210 usage(void)
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211 {
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212 char *base = (char *)"file_write";
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213 char *exec = (char *)getexecname();
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214
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215 if (exec != NULL)
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216 exec = strdup(exec);
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217 if (exec != NULL)
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218 base = basename(exec);
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219
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220 (void) printf("Usage: %s [-v] -o {create,overwrite,append} -f file_name"
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221 " [-b block_size]\n"
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222 "\t[-s offset] [-c write_count] [-d data]\n"
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223 "\twhere [data] equal to zero causes chars "
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224 "0->%d to be repeated throughout\n", base, DATA_RANGE);
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225
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226 if (exec) {
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227 free(exec);
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228 }
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229
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230 exit(1);
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231 }