snapraid/cov/cmdline/parity.c.gcov.html
Andrea Mazzoleni a53ac4a175 Auto update
2026-03-15 18:52:43 +01:00

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<title>LCOV - lcov.info - cmdline/parity.c</title>
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<td width="35%" class="headerValue"><a href="../index.html">top level</a> - <a href="index.html">cmdline</a> - parity.c<span style="font-size: 80%;"> (source / <a href="parity.c.func-sort-c.html">functions</a>)</span></td>
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<td width="15%"></td>
<td width="10%" class="headerCovTableHead">Hit</td>
<td width="10%" class="headerCovTableHead">Total</td>
<td width="15%" class="headerCovTableHead">Coverage</td>
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<td class="headerItem">Test:</td>
<td class="headerValue">lcov.info</td>
<td></td>
<td class="headerItem">Lines:</td>
<td class="headerCovTableEntry">232</td>
<td class="headerCovTableEntry">254</td>
<td class="headerCovTableEntryHi">91.3 %</td>
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<td class="headerItem">Date:</td>
<td class="headerValue">2026-03-15 15:58:19</td>
<td></td>
<td class="headerItem">Functions:</td>
<td class="headerCovTableEntry">18</td>
<td class="headerCovTableEntry">19</td>
<td class="headerCovTableEntryHi">94.7 %</td>
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<pre class="sourceHeading"> Line data Source code</pre>
<pre class="source">
<a name="1"><span class="lineNum"> 1 </span> : /*</a>
<a name="2"><span class="lineNum"> 2 </span> : * Copyright (C) 2011 Andrea Mazzoleni</a>
<a name="3"><span class="lineNum"> 3 </span> : *</a>
<a name="4"><span class="lineNum"> 4 </span> : * This program is free software: you can redistribute it and/or modify</a>
<a name="5"><span class="lineNum"> 5 </span> : * it under the terms of the GNU General Public License as published by</a>
<a name="6"><span class="lineNum"> 6 </span> : * the Free Software Foundation, either version 3 of the License, or</a>
<a name="7"><span class="lineNum"> 7 </span> : * (at your option) any later version.</a>
<a name="8"><span class="lineNum"> 8 </span> : *</a>
<a name="9"><span class="lineNum"> 9 </span> : * This program is distributed in the hope that it will be useful,</a>
<a name="10"><span class="lineNum"> 10 </span> : * but WITHOUT ANY WARRANTY; without even the implied warranty of</a>
<a name="11"><span class="lineNum"> 11 </span> : * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</a>
<a name="12"><span class="lineNum"> 12 </span> : * GNU General Public License for more details.</a>
<a name="13"><span class="lineNum"> 13 </span> : *</a>
<a name="14"><span class="lineNum"> 14 </span> : * You should have received a copy of the GNU General Public License</a>
<a name="15"><span class="lineNum"> 15 </span> : * along with this program. If not, see &lt;http://www.gnu.org/licenses/&gt;.</a>
<a name="16"><span class="lineNum"> 16 </span> : */</a>
<a name="17"><span class="lineNum"> 17 </span> : </a>
<a name="18"><span class="lineNum"> 18 </span> : #include &quot;portable.h&quot;</a>
<a name="19"><span class="lineNum"> 19 </span> : </a>
<a name="20"><span class="lineNum"> 20 </span> : #include &quot;support.h&quot;</a>
<a name="21"><span class="lineNum"> 21 </span> : #include &quot;elem.h&quot;</a>
<a name="22"><span class="lineNum"> 22 </span> : #include &quot;state.h&quot;</a>
<a name="23"><span class="lineNum"> 23 </span> : #include &quot;parity.h&quot;</a>
<a name="24"><span class="lineNum"> 24 </span> : #include &quot;handle.h&quot;</a>
<a name="25"><span class="lineNum"> 25 </span> : </a>
<a name="26"><span class="lineNum"> 26 </span> : /**</a>
<a name="27"><span class="lineNum"> 27 </span> : * Pseudo random limits for parity</a>
<a name="28"><span class="lineNum"> 28 </span> : */</a>
<a name="29"><span class="lineNum"> 29 </span> : #define PARITY_LIMIT(size, split, level) \</a>
<a name="30"><span class="lineNum"> 30 </span> : size ? size + (123562341 + split * 634542351 + level * 983491341) % size : 0</a>
<a name="31"><span class="lineNum"> 31 </span> : </a>
<a name="32"><span class="lineNum"> 32 </span> : /****************************************************************************/</a>
<a name="33"><span class="lineNum"> 33 </span> : /* parity */</a>
<a name="34"><span class="lineNum"> 34 </span> : </a>
<a name="35"><span class="lineNum"> 35 </span><span class="lineCov"> 688 : block_off_t parity_allocated_size(struct snapraid_state* state)</span></a>
<a name="36"><span class="lineNum"> 36 </span> : {</a>
<a name="37"><span class="lineNum"> 37 </span> : block_off_t parity_block;</a>
<a name="38"><span class="lineNum"> 38 </span> : tommy_node* i;</a>
<a name="39"><span class="lineNum"> 39 </span> : </a>
<a name="40"><span class="lineNum"> 40 </span> : /* compute the size of the parity file */</a>
<a name="41"><span class="lineNum"> 41 </span><span class="lineCov"> 688 : parity_block = 0;</span></a>
<a name="42"><span class="lineNum"> 42 </span><span class="lineCov"> 4806 : for (i = state-&gt;disklist; i != 0; i = i-&gt;next) {</span></a>
<a name="43"><span class="lineNum"> 43 </span><span class="lineCov"> 4118 : struct snapraid_disk* disk = i-&gt;data;</span></a>
<a name="44"><span class="lineNum"> 44 </span> : </a>
<a name="45"><span class="lineNum"> 45 </span> : /* start from the declared size */</a>
<a name="46"><span class="lineNum"> 46 </span><span class="lineCov"> 4118 : block_off_t block = fs_size(disk);</span></a>
<a name="47"><span class="lineNum"> 47 </span> : </a>
<a name="48"><span class="lineNum"> 48 </span> : /* decrease the block until an allocated one, but part of a file */</a>
<a name="49"><span class="lineNum"> 49 </span> : /* we don't stop at deleted blocks, because we want to have them cleared */</a>
<a name="50"><span class="lineNum"> 50 </span> : /* if they are at the end of the parity */</a>
<a name="51"><span class="lineNum"> 51 </span><span class="lineCov"> 187957 : while (block &gt; parity_block &amp;&amp; !block_has_file(fs_par2block_find(disk, block - 1)))</span></a>
<a name="52"><span class="lineNum"> 52 </span><span class="lineCov"> 183839 : --block;</span></a>
<a name="53"><span class="lineNum"> 53 </span> : </a>
<a name="54"><span class="lineNum"> 54 </span> : /* get the highest value */</a>
<a name="55"><span class="lineNum"> 55 </span><span class="lineCov"> 4118 : if (block &gt; parity_block)</span></a>
<a name="56"><span class="lineNum"> 56 </span><span class="lineCov"> 2407 : parity_block = block;</span></a>
<a name="57"><span class="lineNum"> 57 </span> : }</a>
<a name="58"><span class="lineNum"> 58 </span> : </a>
<a name="59"><span class="lineNum"> 59 </span><span class="lineCov"> 688 : return parity_block;</span></a>
<a name="60"><span class="lineNum"> 60 </span> : }</a>
<a name="61"><span class="lineNum"> 61 </span> : </a>
<a name="62"><span class="lineNum"> 62 </span><span class="lineCov"> 96 : block_off_t parity_used_size(struct snapraid_state* state)</span></a>
<a name="63"><span class="lineNum"> 63 </span> : {</a>
<a name="64"><span class="lineNum"> 64 </span> : block_off_t parity_block;</a>
<a name="65"><span class="lineNum"> 65 </span> : tommy_node* i;</a>
<a name="66"><span class="lineNum"> 66 </span> : </a>
<a name="67"><span class="lineNum"> 67 </span> : /* compute the size of the parity file */</a>
<a name="68"><span class="lineNum"> 68 </span><span class="lineCov"> 96 : parity_block = 0;</span></a>
<a name="69"><span class="lineNum"> 69 </span><span class="lineCov"> 671 : for (i = state-&gt;disklist; i != 0; i = i-&gt;next) {</span></a>
<a name="70"><span class="lineNum"> 70 </span><span class="lineCov"> 575 : struct snapraid_disk* disk = i-&gt;data;</span></a>
<a name="71"><span class="lineNum"> 71 </span> : </a>
<a name="72"><span class="lineNum"> 72 </span> : /* start from the declared size */</a>
<a name="73"><span class="lineNum"> 73 </span><span class="lineCov"> 575 : block_off_t block = fs_size(disk);</span></a>
<a name="74"><span class="lineNum"> 74 </span> : </a>
<a name="75"><span class="lineNum"> 75 </span> : /* decrease the block until an used one */</a>
<a name="76"><span class="lineNum"> 76 </span><span class="lineCov"> 223640 : while (block &gt; parity_block &amp;&amp; !block_has_file_and_valid_parity(fs_par2block_find(disk, block - 1)))</span></a>
<a name="77"><span class="lineNum"> 77 </span><span class="lineCov"> 223065 : --block;</span></a>
<a name="78"><span class="lineNum"> 78 </span> : </a>
<a name="79"><span class="lineNum"> 79 </span> : /* get the highest value */</a>
<a name="80"><span class="lineNum"> 80 </span><span class="lineCov"> 575 : if (block &gt; parity_block)</span></a>
<a name="81"><span class="lineNum"> 81 </span><span class="lineCov"> 318 : parity_block = block;</span></a>
<a name="82"><span class="lineNum"> 82 </span> : }</a>
<a name="83"><span class="lineNum"> 83 </span> : </a>
<a name="84"><span class="lineNum"> 84 </span><span class="lineCov"> 96 : return parity_block;</span></a>
<a name="85"><span class="lineNum"> 85 </span> : }</a>
<a name="86"><span class="lineNum"> 86 </span> : </a>
<a name="87"><span class="lineNum"> 87 </span><span class="lineNoCov"> 0 : void parity_overflow(struct snapraid_state* state, data_off_t size)</span></a>
<a name="88"><span class="lineNum"> 88 </span> : {</a>
<a name="89"><span class="lineNum"> 89 </span> : tommy_node* i;</a>
<a name="90"><span class="lineNum"> 90 </span> : block_off_t blockalloc;</a>
<a name="91"><span class="lineNum"> 91 </span><span class="lineNoCov"> 0 : int found = 0;</span></a>
<a name="92"><span class="lineNum"> 92 </span> : char esc_buffer[ESC_MAX];</a>
<a name="93"><span class="lineNum"> 93 </span> : </a>
<a name="94"><span class="lineNum"> 94 </span> : /* don't report if everything is outside or if the file is not accessible */</a>
<a name="95"><span class="lineNum"> 95 </span><span class="lineNoCov"> 0 : if (size == 0) {</span></a>
<a name="96"><span class="lineNum"> 96 </span><span class="lineNoCov"> 0 : return;</span></a>
<a name="97"><span class="lineNum"> 97 </span> : }</a>
<a name="98"><span class="lineNum"> 98 </span> : </a>
<a name="99"><span class="lineNum"> 99 </span><span class="lineNoCov"> 0 : blockalloc = size / state-&gt;block_size;</span></a>
<a name="100"><span class="lineNum"> 100 </span> : </a>
<a name="101"><span class="lineNum"> 101 </span> : /* for all disks */</a>
<a name="102"><span class="lineNum"> 102 </span><span class="lineNoCov"> 0 : for (i = state-&gt;disklist; i != 0; i = i-&gt;next) {</span></a>
<a name="103"><span class="lineNum"> 103 </span><span class="lineNoCov"> 0 : struct snapraid_disk* disk = i-&gt;data;</span></a>
<a name="104"><span class="lineNum"> 104 </span> : tommy_node* j;</a>
<a name="105"><span class="lineNum"> 105 </span> : </a>
<a name="106"><span class="lineNum"> 106 </span> : /* for all files */</a>
<a name="107"><span class="lineNum"> 107 </span><span class="lineNoCov"> 0 : for (j = disk-&gt;filelist; j != 0; j = j-&gt;next) {</span></a>
<a name="108"><span class="lineNum"> 108 </span><span class="lineNoCov"> 0 : struct snapraid_file* file = j-&gt;data;</span></a>
<a name="109"><span class="lineNum"> 109 </span> : </a>
<a name="110"><span class="lineNum"> 110 </span><span class="lineNoCov"> 0 : if (file-&gt;blockmax &gt; 0) {</span></a>
<a name="111"><span class="lineNum"> 111 </span><span class="lineNoCov"> 0 : block_off_t parity_pos = fs_file2par_get(disk, file, file-&gt;blockmax - 1);</span></a>
<a name="112"><span class="lineNum"> 112 </span><span class="lineNoCov"> 0 : if (parity_pos &gt;= blockalloc) {</span></a>
<a name="113"><span class="lineNum"> 113 </span><span class="lineNoCov"> 0 : found = 1;</span></a>
<a name="114"><span class="lineNum"> 114 </span><span class="lineNoCov"> 0 : log_tag(&quot;outofparity:%s:%s\n&quot;, disk-&gt;name, esc_tag(file-&gt;sub, esc_buffer));</span></a>
<a name="115"><span class="lineNum"> 115 </span><span class="lineNoCov"> 0 : log_fatal(ESOFT, &quot;outofparity %s%s\n&quot;, disk-&gt;dir, file-&gt;sub);</span></a>
<a name="116"><span class="lineNum"> 116 </span> : }</a>
<a name="117"><span class="lineNum"> 117 </span> : }</a>
<a name="118"><span class="lineNum"> 118 </span> : }</a>
<a name="119"><span class="lineNum"> 119 </span> : }</a>
<a name="120"><span class="lineNum"> 120 </span> : </a>
<a name="121"><span class="lineNum"> 121 </span><span class="lineNoCov"> 0 : if (found) {</span></a>
<a name="122"><span class="lineNum"> 122 </span><span class="lineNoCov"> 0 : log_fatal(ESOFT, &quot;\nInsufficient parity space. Data requires more parity than available.\n&quot;);</span></a>
<a name="123"><span class="lineNum"> 123 </span><span class="lineNoCov"> 0 : log_fatal(ESOFT, &quot;Move the 'outofparity' files to a larger disk.\n&quot;);</span></a>
<a name="124"><span class="lineNum"> 124 </span> : }</a>
<a name="125"><span class="lineNum"> 125 </span> : }</a>
<a name="126"><span class="lineNum"> 126 </span> : </a>
<a name="127"><span class="lineNum"> 127 </span><span class="lineCov"> 531 : void parity_size(struct snapraid_parity_handle* handle, data_off_t* out_size)</span></a>
<a name="128"><span class="lineNum"> 128 </span> : {</a>
<a name="129"><span class="lineNum"> 129 </span> : unsigned s;</a>
<a name="130"><span class="lineNum"> 130 </span> : data_off_t size;</a>
<a name="131"><span class="lineNum"> 131 </span> : </a>
<a name="132"><span class="lineNum"> 132 </span> : /* now compute the size summing all the parity splits */</a>
<a name="133"><span class="lineNum"> 133 </span><span class="lineCov"> 531 : size = 0;</span></a>
<a name="134"><span class="lineNum"> 134 </span> : </a>
<a name="135"><span class="lineNum"> 135 </span><span class="lineCov"> 2655 : for (s = 0; s &lt; handle-&gt;split_mac; ++s) {</span></a>
<a name="136"><span class="lineNum"> 136 </span><span class="lineCov"> 2124 : struct snapraid_split_handle* split = &amp;handle-&gt;split_map[s];</span></a>
<a name="137"><span class="lineNum"> 137 </span> : </a>
<a name="138"><span class="lineNum"> 138 </span><span class="lineCov"> 2124 : size += split-&gt;size;</span></a>
<a name="139"><span class="lineNum"> 139 </span> : }</a>
<a name="140"><span class="lineNum"> 140 </span> : </a>
<a name="141"><span class="lineNum"> 141 </span><span class="lineCov"> 531 : *out_size = size;</span></a>
<a name="142"><span class="lineNum"> 142 </span><span class="lineCov"> 531 : }</span></a>
<a name="143"><span class="lineNum"> 143 </span> : </a>
<a name="144"><span class="lineNum"> 144 </span><span class="lineCov"> 657 : int parity_create(struct snapraid_parity_handle* handle, const struct snapraid_parity* parity, unsigned level, int mode, uint32_t block_size, data_off_t limit_size)</span></a>
<a name="145"><span class="lineNum"> 145 </span> : {</a>
<a name="146"><span class="lineNum"> 146 </span> : unsigned s;</a>
<a name="147"><span class="lineNum"> 147 </span> : data_off_t block_mask;</a>
<a name="148"><span class="lineNum"> 148 </span> : </a>
<a name="149"><span class="lineNum"> 149 </span> : /* mask of bits used by the block size */</a>
<a name="150"><span class="lineNum"> 150 </span><span class="lineCov"> 657 : block_mask = ((data_off_t)block_size) - 1;</span></a>
<a name="151"><span class="lineNum"> 151 </span> : </a>
<a name="152"><span class="lineNum"> 152 </span><span class="lineCov"> 657 : handle-&gt;level = level;</span></a>
<a name="153"><span class="lineNum"> 153 </span><span class="lineCov"> 657 : handle-&gt;split_mac = 0;</span></a>
<a name="154"><span class="lineNum"> 154 </span> : </a>
<a name="155"><span class="lineNum"> 155 </span><span class="lineCov"> 3285 : for (s = 0; s &lt; parity-&gt;split_mac; ++s) {</span></a>
<a name="156"><span class="lineNum"> 156 </span><span class="lineCov"> 2628 : struct snapraid_split_handle* split = &amp;handle-&gt;split_map[s];</span></a>
<a name="157"><span class="lineNum"> 157 </span> : int ret;</a>
<a name="158"><span class="lineNum"> 158 </span> : int flags;</a>
<a name="159"><span class="lineNum"> 159 </span> : </a>
<a name="160"><span class="lineNum"> 160 </span><span class="lineCov"> 2628 : advise_init(&amp;split-&gt;advise, mode);</span></a>
<a name="161"><span class="lineNum"> 161 </span><span class="lineCov"> 2628 : pathcpy(split-&gt;path, sizeof(split-&gt;path), parity-&gt;split_map[s].path);</span></a>
<a name="162"><span class="lineNum"> 162 </span><span class="lineCov"> 2628 : split-&gt;size = parity-&gt;split_map[s].size;</span></a>
<a name="163"><span class="lineNum"> 163 </span><span class="lineCov"> 2628 : split-&gt;limit_size = PARITY_LIMIT(limit_size, s, level);</span></a>
<a name="164"><span class="lineNum"> 164 </span> : </a>
<a name="165"><span class="lineNum"> 165 </span> : /* opening in sequential mode in Windows */</a>
<a name="166"><span class="lineNum"> 166 </span><span class="lineCov"> 2628 : flags = O_RDWR | O_CREAT | O_BINARY | advise_flags(&amp;split-&gt;advise);</span></a>
<a name="167"><span class="lineNum"> 167 </span><span class="lineCov"> 2628 : split-&gt;f = open(split-&gt;path, flags, 0600);</span></a>
<a name="168"><span class="lineNum"> 168 </span><span class="lineCov"> 2628 : if (split-&gt;f == -1) {</span></a>
<a name="169"><span class="lineNum"> 169 </span> : /* LCOV_EXCL_START */</a>
<a name="170"><span class="lineNum"> 170 </span> : log_fatal(errno, &quot;Error opening parity file '%s'. %s.\n&quot;, split-&gt;path, strerror(errno));</a>
<a name="171"><span class="lineNum"> 171 </span> : goto bail;</a>
<a name="172"><span class="lineNum"> 172 </span> : /* LCOV_EXCL_STOP */</a>
<a name="173"><span class="lineNum"> 173 </span> : }</a>
<a name="174"><span class="lineNum"> 174 </span> : </a>
<a name="175"><span class="lineNum"> 175 </span> : /* we have a valid file handle */</a>
<a name="176"><span class="lineNum"> 176 </span><span class="lineCov"> 2628 : ++handle-&gt;split_mac;</span></a>
<a name="177"><span class="lineNum"> 177 </span> : </a>
<a name="178"><span class="lineNum"> 178 </span> : /* get the stat info */</a>
<a name="179"><span class="lineNum"> 179 </span><span class="lineCov"> 2628 : ret = fstat(split-&gt;f, &amp;split-&gt;st);</span></a>
<a name="180"><span class="lineNum"> 180 </span><span class="lineCov"> 2628 : if (ret != 0) {</span></a>
<a name="181"><span class="lineNum"> 181 </span> : /* LCOV_EXCL_START */</a>
<a name="182"><span class="lineNum"> 182 </span> : log_fatal(errno, &quot;Error accessing parity file '%s'. %s.\n&quot;, split-&gt;path, strerror(errno));</a>
<a name="183"><span class="lineNum"> 183 </span> : goto bail;</a>
<a name="184"><span class="lineNum"> 184 </span> : /* LCOV_EXCL_STOP */</a>
<a name="185"><span class="lineNum"> 185 </span> : }</a>
<a name="186"><span class="lineNum"> 186 </span> : </a>
<a name="187"><span class="lineNum"> 187 </span> : /* the initial valid size is the size on disk */</a>
<a name="188"><span class="lineNum"> 188 </span><span class="lineCov"> 2628 : split-&gt;valid_size = split-&gt;st.st_size;</span></a>
<a name="189"><span class="lineNum"> 189 </span> : </a>
<a name="190"><span class="lineNum"> 190 </span> : /**</a>
<a name="191"><span class="lineNum"> 191 </span> : * If the parity size is not yet set, set it now.</a>
<a name="192"><span class="lineNum"> 192 </span> : * This happens when expanding the number of parities,</a>
<a name="193"><span class="lineNum"> 193 </span> : * or when upgrading from a content file that has not split-&gt;size data.</a>
<a name="194"><span class="lineNum"> 194 </span> : */</a>
<a name="195"><span class="lineNum"> 195 </span><span class="lineCov"> 2628 : if (split-&gt;size == PARITY_SIZE_INVALID) {</span></a>
<a name="196"><span class="lineNum"> 196 </span><span class="lineCov"> 144 : split-&gt;size = split-&gt;st.st_size;</span></a>
<a name="197"><span class="lineNum"> 197 </span> : </a>
<a name="198"><span class="lineNum"> 198 </span> : /* ensure that the resulting size if block aligned */</a>
<a name="199"><span class="lineNum"> 199 </span><span class="lineCov"> 144 : if ((split-&gt;size &amp; block_mask) != 0) {</span></a>
<a name="200"><span class="lineNum"> 200 </span> : /* LCOV_EXCL_START */</a>
<a name="201"><span class="lineNum"> 201 </span> : log_fatal(ESOFT, &quot;Error in preallocated size of parity file '%s' with size %&quot; PRIu64 &quot; and block %u .\n&quot;, split-&gt;path, split-&gt;size, block_size);</a>
<a name="202"><span class="lineNum"> 202 </span> : goto bail;</a>
<a name="203"><span class="lineNum"> 203 </span> : /* LCOV_EXCL_STOP */</a>
<a name="204"><span class="lineNum"> 204 </span> : }</a>
<a name="205"><span class="lineNum"> 205 </span> : }</a>
<a name="206"><span class="lineNum"> 206 </span> : </a>
<a name="207"><span class="lineNum"> 207 </span><span class="lineCov"> 2628 : ret = advise_open(&amp;split-&gt;advise, split-&gt;f);</span></a>
<a name="208"><span class="lineNum"> 208 </span><span class="lineCov"> 2628 : if (ret != 0) {</span></a>
<a name="209"><span class="lineNum"> 209 </span> : /* LCOV_EXCL_START */</a>
<a name="210"><span class="lineNum"> 210 </span> : log_fatal(errno, &quot;Error advising parity file '%s'. %s.\n&quot;, split-&gt;path, strerror(errno));</a>
<a name="211"><span class="lineNum"> 211 </span> : goto bail;</a>
<a name="212"><span class="lineNum"> 212 </span> : /* LCOV_EXCL_STOP */</a>
<a name="213"><span class="lineNum"> 213 </span> : }</a>
<a name="214"><span class="lineNum"> 214 </span> : }</a>
<a name="215"><span class="lineNum"> 215 </span> : </a>
<a name="216"><span class="lineNum"> 216 </span><span class="lineCov"> 657 : return 0;</span></a>
<a name="217"><span class="lineNum"> 217 </span> : </a>
<a name="218"><span class="lineNum"> 218 </span><span class="lineNoCov"> 0 : bail:</span></a>
<a name="219"><span class="lineNum"> 219 </span> : /* LCOV_EXCL_START */</a>
<a name="220"><span class="lineNum"> 220 </span> : for (s = 0; s &lt; handle-&gt;split_mac; ++s) {</a>
<a name="221"><span class="lineNum"> 221 </span> : struct snapraid_split_handle* split = &amp;handle-&gt;split_map[s];</a>
<a name="222"><span class="lineNum"> 222 </span> : close(split-&gt;f);</a>
<a name="223"><span class="lineNum"> 223 </span> : split-&gt;f = -1;</a>
<a name="224"><span class="lineNum"> 224 </span> : }</a>
<a name="225"><span class="lineNum"> 225 </span> : return -1;</a>
<a name="226"><span class="lineNum"> 226 </span> : /* LCOV_EXCL_STOP */</a>
<a name="227"><span class="lineNum"> 227 </span> : }</a>
<a name="228"><span class="lineNum"> 228 </span> : </a>
<a name="229"><span class="lineNum"> 229 </span><span class="lineCov"> 839 : static int parity_handle_grow(struct snapraid_split_handle* split, data_off_t previous_size, data_off_t size, int skip_fallocate)</span></a>
<a name="230"><span class="lineNum"> 230 </span> : {</a>
<a name="231"><span class="lineNum"> 231 </span> : int ret;</a>
<a name="232"><span class="lineNum"> 232 </span> : </a>
<a name="233"><span class="lineNum"> 233 </span> : (void)previous_size;</a>
<a name="234"><span class="lineNum"> 234 </span> : </a>
<a name="235"><span class="lineNum"> 235 </span> : /* simulate a failure for testing limits */</a>
<a name="236"><span class="lineNum"> 236 </span><span class="lineCov"> 839 : if (split-&gt;limit_size != 0 &amp;&amp; size &gt; (data_off_t)split-&gt;limit_size) {</span></a>
<a name="237"><span class="lineNum"> 237 </span><span class="lineCov"> 140 : errno = ENXIO;</span></a>
<a name="238"><span class="lineNum"> 238 </span><span class="lineCov"> 140 : return -1;</span></a>
<a name="239"><span class="lineNum"> 239 </span> : }</a>
<a name="240"><span class="lineNum"> 240 </span> : </a>
<a name="241"><span class="lineNum"> 241 </span> : #if HAVE_FALLOCATE</a>
<a name="242"><span class="lineNum"> 242 </span><span class="lineCov"> 699 : if (!skip_fallocate) {</span></a>
<a name="243"><span class="lineNum"> 243 </span> : /*</a>
<a name="244"><span class="lineNum"> 244 </span> : * Allocate real space using the specific Linux fallocate() operation.</a>
<a name="245"><span class="lineNum"> 245 </span> : * If the underline file-system doesn't support it, this operation fails.</a>
<a name="246"><span class="lineNum"> 246 </span> : *</a>
<a name="247"><span class="lineNum"> 247 </span> : * Instead posix_fallocate() fallbacks to write the whole file,</a>
<a name="248"><span class="lineNum"> 248 </span> : * and we cannot use it as we may need to initialize a multi terabyte</a>
<a name="249"><span class="lineNum"> 249 </span> : * file.</a>
<a name="250"><span class="lineNum"> 250 </span> : *</a>
<a name="251"><span class="lineNum"> 251 </span> : * See: fallocate vs posix_fallocate</a>
<a name="252"><span class="lineNum"> 252 </span> : * http://stackoverflow.com/questions/14063046/fallocate-vs-posix-fallocate</a>
<a name="253"><span class="lineNum"> 253 </span> : *</a>
<a name="254"><span class="lineNum"> 254 </span> : * To work better with Btrfs, use as offset the previous allocated size.</a>
<a name="255"><span class="lineNum"> 255 </span> : * Otherwise Btrfs will count as space needed even the already allocated one.</a>
<a name="256"><span class="lineNum"> 256 </span> : *</a>
<a name="257"><span class="lineNum"> 257 </span> : * See: Massive loss of disk space</a>
<a name="258"><span class="lineNum"> 258 </span> : * https://www.mail-archive.com/linux-btrfs@vger.kernel.org/msg66454.html</a>
<a name="259"><span class="lineNum"> 259 </span> : */</a>
<a name="260"><span class="lineNum"> 260 </span><span class="lineCov"> 688 : ret = fallocate(split-&gt;f, 0, previous_size, size - previous_size);</span></a>
<a name="261"><span class="lineNum"> 261 </span> : </a>
<a name="262"><span class="lineNum"> 262 </span> : /*</a>
<a name="263"><span class="lineNum"> 263 </span> : * In some legacy system fallocate() may return the error number</a>
<a name="264"><span class="lineNum"> 264 </span> : * as positive integer, and in this case it doesn't set errno.</a>
<a name="265"><span class="lineNum"> 265 </span> : *</a>
<a name="266"><span class="lineNum"> 266 </span> : * Detect and handle this case.</a>
<a name="267"><span class="lineNum"> 267 </span> : *</a>
<a name="268"><span class="lineNum"> 268 </span> : * See: Fix fallocate error return on i386</a>
<a name="269"><span class="lineNum"> 269 </span> : * https://sourceware.org/ml/libc-hacker/2010-04/msg00000.html</a>
<a name="270"><span class="lineNum"> 270 </span> : *</a>
<a name="271"><span class="lineNum"> 271 </span> : * See: [PATCH XFS] Fix error return for fallocate() on XFS</a>
<a name="272"><span class="lineNum"> 272 </span> : * http://oss.sgi.com/archives/xfs/2009-11/msg00201.html</a>
<a name="273"><span class="lineNum"> 273 </span> : */</a>
<a name="274"><span class="lineNum"> 274 </span><span class="lineCov"> 688 : if (ret &gt; 0) {</span></a>
<a name="275"><span class="lineNum"> 275 </span> : /* LCOV_EXCL_START */</a>
<a name="276"><span class="lineNum"> 276 </span> : errno = ret;</a>
<a name="277"><span class="lineNum"> 277 </span> : ret = -1;</a>
<a name="278"><span class="lineNum"> 278 </span> : /* LCOV_EXCL_STOP */</a>
<a name="279"><span class="lineNum"> 279 </span> : }</a>
<a name="280"><span class="lineNum"> 280 </span> : } else {</a>
<a name="281"><span class="lineNum"> 281 </span><span class="lineCov"> 11 : errno = EOPNOTSUPP;</span></a>
<a name="282"><span class="lineNum"> 282 </span><span class="lineCov"> 11 : ret = -1;</span></a>
<a name="283"><span class="lineNum"> 283 </span> : }</a>
<a name="284"><span class="lineNum"> 284 </span> : </a>
<a name="285"><span class="lineNum"> 285 </span> : /*</a>
<a name="286"><span class="lineNum"> 286 </span> : * Fallback to ftruncate() if the operation is not supported.</a>
<a name="287"><span class="lineNum"> 287 </span> : *</a>
<a name="288"><span class="lineNum"> 288 </span> : * We get EOPNOTSUPP if the operation is not supported, like in ext3/ext2</a>
<a name="289"><span class="lineNum"> 289 </span> : * or ENOSYS with kernel before 2.6.23, because fallocate is not supported</a>
<a name="290"><span class="lineNum"> 290 </span> : * at all.</a>
<a name="291"><span class="lineNum"> 291 </span> : *</a>
<a name="292"><span class="lineNum"> 292 </span> : * See: man fallocate</a>
<a name="293"><span class="lineNum"> 293 </span> : * ENOSYS - This kernel does not implement fallocate().</a>
<a name="294"><span class="lineNum"> 294 </span> : * EOPNOTSUPP - The file system containing the file referred to by fd does not support this operation</a>
<a name="295"><span class="lineNum"> 295 </span> : */</a>
<a name="296"><span class="lineNum"> 296 </span><span class="lineCov"> 699 : if (ret != 0 &amp;&amp; (errno == EOPNOTSUPP || errno == ENOSYS)) {</span></a>
<a name="297"><span class="lineNum"> 297 </span> : /* fallback using ftruncate() */</a>
<a name="298"><span class="lineNum"> 298 </span><span class="lineCov"> 11 : ret = ftruncate(split-&gt;f, size);</span></a>
<a name="299"><span class="lineNum"> 299 </span> : }</a>
<a name="300"><span class="lineNum"> 300 </span> : #else</a>
<a name="301"><span class="lineNum"> 301 </span> : (void)skip_fallocate; /* avoid the warning */</a>
<a name="302"><span class="lineNum"> 302 </span> : </a>
<a name="303"><span class="lineNum"> 303 </span> : /* allocate using a sparse file */</a>
<a name="304"><span class="lineNum"> 304 </span> : ret = ftruncate(split-&gt;f, size);</a>
<a name="305"><span class="lineNum"> 305 </span> : #endif</a>
<a name="306"><span class="lineNum"> 306 </span> : </a>
<a name="307"><span class="lineNum"> 307 </span><span class="lineCov"> 699 : if (ret != 0)</span></a>
<a name="308"><span class="lineNum"> 308 </span><span class="lineNoCov"> 0 : log_tag(&quot;split:grow:%s:%&quot; PRIu64 &quot;: failed with error %s\n&quot;, split-&gt;path, size, strerror(errno));</span></a>
<a name="309"><span class="lineNum"> 309 </span> : else</a>
<a name="310"><span class="lineNum"> 310 </span><span class="lineCov"> 699 : log_tag(&quot;split:grow:%s:%&quot; PRIu64 &quot;: ok\n&quot;, split-&gt;path, size);</span></a>
<a name="311"><span class="lineNum"> 311 </span> : </a>
<a name="312"><span class="lineNum"> 312 </span><span class="lineCov"> 699 : return ret;</span></a>
<a name="313"><span class="lineNum"> 313 </span> : }</a>
<a name="314"><span class="lineNum"> 314 </span> : </a>
<a name="315"><span class="lineNum"> 315 </span><span class="lineCov"> 235 : static int parity_handle_shrink(struct snapraid_split_handle* split, data_off_t size)</span></a>
<a name="316"><span class="lineNum"> 316 </span> : {</a>
<a name="317"><span class="lineNum"> 317 </span> : int ret;</a>
<a name="318"><span class="lineNum"> 318 </span> : </a>
<a name="319"><span class="lineNum"> 319 </span><span class="lineCov"> 235 : ret = ftruncate(split-&gt;f, size);</span></a>
<a name="320"><span class="lineNum"> 320 </span> : </a>
<a name="321"><span class="lineNum"> 321 </span><span class="lineCov"> 235 : if (ret != 0)</span></a>
<a name="322"><span class="lineNum"> 322 </span><span class="lineNoCov"> 0 : log_tag(&quot;split:shrink:%s:%&quot; PRIu64 &quot;: failed with error %s\n&quot;, split-&gt;path, size, strerror(errno));</span></a>
<a name="323"><span class="lineNum"> 323 </span> : else</a>
<a name="324"><span class="lineNum"> 324 </span><span class="lineCov"> 235 : log_tag(&quot;split:shrink:%s:%&quot; PRIu64 &quot;: ok\n&quot;, split-&gt;path, size);</span></a>
<a name="325"><span class="lineNum"> 325 </span> : </a>
<a name="326"><span class="lineNum"> 326 </span><span class="lineCov"> 235 : return ret;</span></a>
<a name="327"><span class="lineNum"> 327 </span> : }</a>
<a name="328"><span class="lineNum"> 328 </span> : </a>
<a name="329"><span class="lineNum"> 329 </span> : /**</a>
<a name="330"><span class="lineNum"> 330 </span> : * Get the highest bit set.</a>
<a name="331"><span class="lineNum"> 331 </span> : */</a>
<a name="332"><span class="lineNum"> 332 </span><span class="lineCov"> 839 : uint64_t hbit_u64(uint64_t v)</span></a>
<a name="333"><span class="lineNum"> 333 </span> : {</a>
<a name="334"><span class="lineNum"> 334 </span> : unsigned ilog;</a>
<a name="335"><span class="lineNum"> 335 </span> : </a>
<a name="336"><span class="lineNum"> 336 </span><span class="lineCov"> 839 : ilog = 0;</span></a>
<a name="337"><span class="lineNum"> 337 </span><span class="lineCov"> 13639 : while ((v /= 2) != 0)</span></a>
<a name="338"><span class="lineNum"> 338 </span><span class="lineCov"> 12800 : ++ilog;</span></a>
<a name="339"><span class="lineNum"> 339 </span> : </a>
<a name="340"><span class="lineNum"> 340 </span><span class="lineCov"> 839 : return 1ULL &lt;&lt; ilog;</span></a>
<a name="341"><span class="lineNum"> 341 </span> : }</a>
<a name="342"><span class="lineNum"> 342 </span> : </a>
<a name="343"><span class="lineNum"> 343 </span><span class="lineCov"> 147 : static int parity_handle_fill(struct snapraid_split_handle* split, data_off_t size, uint32_t block_size, int skip_fallocate, int skip_space_holder)</span></a>
<a name="344"><span class="lineNum"> 344 </span> : {</a>
<a name="345"><span class="lineNum"> 345 </span> : data_off_t base;</a>
<a name="346"><span class="lineNum"> 346 </span> : data_off_t delta;</a>
<a name="347"><span class="lineNum"> 347 </span> : data_off_t block_mask;</a>
<a name="348"><span class="lineNum"> 348 </span> : </a>
<a name="349"><span class="lineNum"> 349 </span> : #ifdef _WIN32</a>
<a name="350"><span class="lineNum"> 350 </span> : /*</a>
<a name="351"><span class="lineNum"> 351 </span> : * In Windows we want to avoid the annoying warning</a>
<a name="352"><span class="lineNum"> 352 </span> : * message of disk full.</a>
<a name="353"><span class="lineNum"> 353 </span> : *</a>
<a name="354"><span class="lineNum"> 354 </span> : * To ensure to leave some space available, we first create</a>
<a name="355"><span class="lineNum"> 355 </span> : * a spaceholder file &gt;200 MB, to ensure to not fill completely</a>
<a name="356"><span class="lineNum"> 356 </span> : * the disk.</a>
<a name="357"><span class="lineNum"> 357 </span> : */</a>
<a name="358"><span class="lineNum"> 358 </span> : char spaceholder_path[PATH_MAX];</a>
<a name="359"><span class="lineNum"> 359 </span> : </a>
<a name="360"><span class="lineNum"> 360 </span> : pathprint(spaceholder_path, sizeof(spaceholder_path), &quot;%s%s&quot;, split-&gt;path, &quot;.spaceholder&quot;);</a>
<a name="361"><span class="lineNum"> 361 </span> : </a>
<a name="362"><span class="lineNum"> 362 </span> : if (!skip_space_holder) {</a>
<a name="363"><span class="lineNum"> 363 </span> : int spaceholder_f;</a>
<a name="364"><span class="lineNum"> 364 </span> : </a>
<a name="365"><span class="lineNum"> 365 </span> : spaceholder_f = open(spaceholder_path, O_RDWR | O_CREAT | O_TRUNC | O_BINARY, 0600);</a>
<a name="366"><span class="lineNum"> 366 </span> : if (spaceholder_f == -1) {</a>
<a name="367"><span class="lineNum"> 367 </span> : log_fatal(errno, &quot;Failed to create space holder file '%s'.\n&quot;, spaceholder_path);</a>
<a name="368"><span class="lineNum"> 368 </span> : return -1;</a>
<a name="369"><span class="lineNum"> 369 </span> : }</a>
<a name="370"><span class="lineNum"> 370 </span> : </a>
<a name="371"><span class="lineNum"> 371 </span> : /* note that in Windows ftruncate is really allocating space */</a>
<a name="372"><span class="lineNum"> 372 </span> : if (ftruncate(spaceholder_f, WINDOWS_SPACEHOLDER_SIZE) != 0) {</a>
<a name="373"><span class="lineNum"> 373 </span> : log_fatal(errno, &quot;WARNING Failed to resize the space holder file '%s' to %u bytes.\n&quot;, spaceholder_path, WINDOWS_SPACEHOLDER_SIZE);</a>
<a name="374"><span class="lineNum"> 374 </span> : log_fatal(errno, &quot;Assuming that no more space is available.\n&quot;);</a>
<a name="375"><span class="lineNum"> 375 </span> : close(spaceholder_f);</a>
<a name="376"><span class="lineNum"> 376 </span> : remove(spaceholder_path);</a>
<a name="377"><span class="lineNum"> 377 </span> : return 0;</a>
<a name="378"><span class="lineNum"> 378 </span> : }</a>
<a name="379"><span class="lineNum"> 379 </span> : </a>
<a name="380"><span class="lineNum"> 380 </span> : if (fsync(spaceholder_f) != 0) {</a>
<a name="381"><span class="lineNum"> 381 </span> : log_fatal(errno, &quot;Failed to sync the space holder file '%s'.\n&quot;, spaceholder_path);</a>
<a name="382"><span class="lineNum"> 382 </span> : close(spaceholder_f);</a>
<a name="383"><span class="lineNum"> 383 </span> : remove(spaceholder_path);</a>
<a name="384"><span class="lineNum"> 384 </span> : return -1;</a>
<a name="385"><span class="lineNum"> 385 </span> : }</a>
<a name="386"><span class="lineNum"> 386 </span> : </a>
<a name="387"><span class="lineNum"> 387 </span> : if (close(spaceholder_f) != 0) {</a>
<a name="388"><span class="lineNum"> 388 </span> : log_fatal(errno, &quot;Failed to close the space holder file '%s'.\n&quot;, spaceholder_path);</a>
<a name="389"><span class="lineNum"> 389 </span> : remove(spaceholder_path);</a>
<a name="390"><span class="lineNum"> 390 </span> : return -1;</a>
<a name="391"><span class="lineNum"> 391 </span> : }</a>
<a name="392"><span class="lineNum"> 392 </span> : }</a>
<a name="393"><span class="lineNum"> 393 </span> : #else</a>
<a name="394"><span class="lineNum"> 394 </span> : (void)skip_space_holder;</a>
<a name="395"><span class="lineNum"> 395 </span> : #endif</a>
<a name="396"><span class="lineNum"> 396 </span> : </a>
<a name="397"><span class="lineNum"> 397 </span> : /* mask of bits used by the block size */</a>
<a name="398"><span class="lineNum"> 398 </span><span class="lineCov"> 147 : block_mask = ((data_off_t)block_size) - 1;</span></a>
<a name="399"><span class="lineNum"> 399 </span> : </a>
<a name="400"><span class="lineNum"> 400 </span> : /* present size */</a>
<a name="401"><span class="lineNum"> 401 </span><span class="lineCov"> 147 : base = split-&gt;st.st_size;</span></a>
<a name="402"><span class="lineNum"> 402 </span> : </a>
<a name="403"><span class="lineNum"> 403 </span> : /* truncate it to block size multiplier */</a>
<a name="404"><span class="lineNum"> 404 </span> : /* in case of damage the size may get wrong */</a>
<a name="405"><span class="lineNum"> 405 </span><span class="lineCov"> 147 : base &amp;= ~block_mask;</span></a>
<a name="406"><span class="lineNum"> 406 </span> : </a>
<a name="407"><span class="lineNum"> 407 </span> : /* size we have to increase */</a>
<a name="408"><span class="lineNum"> 408 </span><span class="lineCov"> 147 : delta = size - base;</span></a>
<a name="409"><span class="lineNum"> 409 </span> : </a>
<a name="410"><span class="lineNum"> 410 </span><span class="lineCov"> 147 : log_tag(&quot;split:fill:%s:%&quot; PRIu64 &quot;:%&quot; PRIu64 &quot;:\n&quot;, split-&gt;path, base, size);</span></a>
<a name="411"><span class="lineNum"> 411 </span> : </a>
<a name="412"><span class="lineNum"> 412 </span> : /* grow the size one bit at time, like a kind of binary search */</a>
<a name="413"><span class="lineNum"> 413 </span><span class="lineCov"> 986 : while (delta != 0) {</span></a>
<a name="414"><span class="lineNum"> 414 </span> : int ret;</a>
<a name="415"><span class="lineNum"> 415 </span><span class="lineCov"> 839 : data_off_t run = hbit_u64(delta);</span></a>
<a name="416"><span class="lineNum"> 416 </span> : </a>
<a name="417"><span class="lineNum"> 417 </span> : /* mask out the bit we process */</a>
<a name="418"><span class="lineNum"> 418 </span><span class="lineCov"> 839 : delta &amp;= ~run;</span></a>
<a name="419"><span class="lineNum"> 419 </span> : </a>
<a name="420"><span class="lineNum"> 420 </span><span class="lineCov"> 839 : log_tag(&quot;split:delta:%s:%&quot; PRIu64 &quot;:%&quot; PRIu64 &quot;:\n&quot;, split-&gt;path, base, run);</span></a>
<a name="421"><span class="lineNum"> 421 </span> : </a>
<a name="422"><span class="lineNum"> 422 </span><span class="lineCov"> 839 : ret = parity_handle_grow(split, base, base + run, skip_fallocate);</span></a>
<a name="423"><span class="lineNum"> 423 </span><span class="lineCov"> 839 : if (ret != 0) {</span></a>
<a name="424"><span class="lineNum"> 424 </span> : /* we cannot grow, fallback enabling all the smaller bits */</a>
<a name="425"><span class="lineNum"> 425 </span><span class="lineCov"> 140 : delta = run - 1;</span></a>
<a name="426"><span class="lineNum"> 426 </span> : </a>
<a name="427"><span class="lineNum"> 427 </span> : /* mask out the block size */</a>
<a name="428"><span class="lineNum"> 428 </span><span class="lineCov"> 140 : delta &amp;= ~block_mask;</span></a>
<a name="429"><span class="lineNum"> 429 </span> : } else {</a>
<a name="430"><span class="lineNum"> 430 </span> : /* increase the effective size */</a>
<a name="431"><span class="lineNum"> 431 </span><span class="lineCov"> 699 : base += run;</span></a>
<a name="432"><span class="lineNum"> 432 </span> : }</a>
<a name="433"><span class="lineNum"> 433 </span> : }</a>
<a name="434"><span class="lineNum"> 434 </span> : </a>
<a name="435"><span class="lineNum"> 435 </span> : /* ensure that the resulting size if block aligned */</a>
<a name="436"><span class="lineNum"> 436 </span><span class="lineCov"> 147 : if ((base &amp; block_mask) != 0) {</span></a>
<a name="437"><span class="lineNum"> 437 </span> : /* LCOV_EXCL_START */</a>
<a name="438"><span class="lineNum"> 438 </span> : log_fatal(EINTERNAL, &quot;Internal inconsistency in requested parity size %&quot; PRIu64 &quot; with block %u\n&quot;, base, block_size);</a>
<a name="439"><span class="lineNum"> 439 </span> : os_abort();</a>
<a name="440"><span class="lineNum"> 440 </span> : /* LCOV_EXCL_STOP */</a>
<a name="441"><span class="lineNum"> 441 </span> : }</a>
<a name="442"><span class="lineNum"> 442 </span> : </a>
<a name="443"><span class="lineNum"> 443 </span> : #ifdef _WIN32</a>
<a name="444"><span class="lineNum"> 444 </span> : /* now delete the spaceholder file */</a>
<a name="445"><span class="lineNum"> 445 </span> : if (remove(spaceholder_path) != 0) {</a>
<a name="446"><span class="lineNum"> 446 </span> : log_error(errno, &quot;WARNING Failed to remove the space holder file '%s'.\n&quot;, spaceholder_path);</a>
<a name="447"><span class="lineNum"> 447 </span> : log_error(errno, &quot;Continuing anyway.\n&quot;);</a>
<a name="448"><span class="lineNum"> 448 </span> : }</a>
<a name="449"><span class="lineNum"> 449 </span> : #endif</a>
<a name="450"><span class="lineNum"> 450 </span> : </a>
<a name="451"><span class="lineNum"> 451 </span> : /* shrink to the expected size to ensure to throw away any extra */</a>
<a name="452"><span class="lineNum"> 452 </span> : /* data allocated when the grow operation fails */</a>
<a name="453"><span class="lineNum"> 453 </span><span class="lineCov"> 147 : return parity_handle_shrink(split, base);</span></a>
<a name="454"><span class="lineNum"> 454 </span> : }</a>
<a name="455"><span class="lineNum"> 455 </span> : </a>
<a name="456"><span class="lineNum"> 456 </span><span class="lineCov"> 2604 : static int parity_handle_chsize(struct snapraid_split_handle* split, data_off_t size, uint32_t block_size, int skip_fallocate, int skip_space_holder)</span></a>
<a name="457"><span class="lineNum"> 457 </span> : {</a>
<a name="458"><span class="lineNum"> 458 </span> : int ret;</a>
<a name="459"><span class="lineNum"> 459 </span> : int f_ret;</a>
<a name="460"><span class="lineNum"> 460 </span> : int f_errno;</a>
<a name="461"><span class="lineNum"> 461 </span> : int f_dir;</a>
<a name="462"><span class="lineNum"> 462 </span> : </a>
<a name="463"><span class="lineNum"> 463 </span><span class="lineCov"> 2604 : if (split-&gt;st.st_size &lt; size) {</span></a>
<a name="464"><span class="lineNum"> 464 </span><span class="lineCov"> 147 : f_ret = parity_handle_fill(split, size, block_size, skip_fallocate, skip_space_holder);</span></a>
<a name="465"><span class="lineNum"> 465 </span><span class="lineCov"> 147 : f_errno = errno;</span></a>
<a name="466"><span class="lineNum"> 466 </span><span class="lineCov"> 147 : f_dir = 1;</span></a>
<a name="467"><span class="lineNum"> 467 </span><span class="lineCov"> 2457 : } else if (split-&gt;st.st_size &gt; size) {</span></a>
<a name="468"><span class="lineNum"> 468 </span><span class="lineCov"> 88 : f_ret = parity_handle_shrink(split, size);</span></a>
<a name="469"><span class="lineNum"> 469 </span><span class="lineCov"> 88 : f_errno = errno;</span></a>
<a name="470"><span class="lineNum"> 470 </span><span class="lineCov"> 88 : f_dir = -1;</span></a>
<a name="471"><span class="lineNum"> 471 </span> : } else {</a>
<a name="472"><span class="lineNum"> 472 </span><span class="lineCov"> 2369 : f_ret = 0;</span></a>
<a name="473"><span class="lineNum"> 473 </span><span class="lineCov"> 2369 : f_errno = 0;</span></a>
<a name="474"><span class="lineNum"> 474 </span><span class="lineCov"> 2369 : f_dir = 0;</span></a>
<a name="475"><span class="lineNum"> 475 </span> : }</a>
<a name="476"><span class="lineNum"> 476 </span> : </a>
<a name="477"><span class="lineNum"> 477 </span> : /* get the stat info */</a>
<a name="478"><span class="lineNum"> 478 </span><span class="lineCov"> 2604 : ret = fstat(split-&gt;f, &amp;split-&gt;st);</span></a>
<a name="479"><span class="lineNum"> 479 </span><span class="lineCov"> 2604 : if (ret != 0) {</span></a>
<a name="480"><span class="lineNum"> 480 </span> : /* LCOV_EXCL_START */</a>
<a name="481"><span class="lineNum"> 481 </span> : log_fatal(errno, &quot;Error accessing parity file '%s'. %s.\n&quot;, split-&gt;path, strerror(errno));</a>
<a name="482"><span class="lineNum"> 482 </span> : return -1;</a>
<a name="483"><span class="lineNum"> 483 </span> : /* LCOV_EXCL_STOP */</a>
<a name="484"><span class="lineNum"> 484 </span> : }</a>
<a name="485"><span class="lineNum"> 485 </span> : </a>
<a name="486"><span class="lineNum"> 486 </span> : /* now check the error */</a>
<a name="487"><span class="lineNum"> 487 </span><span class="lineCov"> 2604 : if (f_ret != 0) {</span></a>
<a name="488"><span class="lineNum"> 488 </span> : /* LCOV_EXCL_START */</a>
<a name="489"><span class="lineNum"> 489 </span> : if (f_dir &gt; 0) {</a>
<a name="490"><span class="lineNum"> 490 </span> : if (f_errno == ENOSPC) {</a>
<a name="491"><span class="lineNum"> 491 </span> : log_fatal(errno, &quot;Failed to grow parity file '%s' to size %&quot; PRIu64 &quot; due lack of space.\n&quot;, split-&gt;path, size);</a>
<a name="492"><span class="lineNum"> 492 </span> : } else {</a>
<a name="493"><span class="lineNum"> 493 </span> : log_fatal(errno, &quot;Error growing parity file '%s' to size %&quot; PRIu64 &quot;. Do you have enough space? %s.\n&quot;, split-&gt;path, size, strerror(f_errno));</a>
<a name="494"><span class="lineNum"> 494 </span> : }</a>
<a name="495"><span class="lineNum"> 495 </span> : } else {</a>
<a name="496"><span class="lineNum"> 496 </span> : log_fatal(errno, &quot;Error truncating parity file '%s' to size %&quot; PRIu64 &quot;. %s.\n&quot;, split-&gt;path, size, strerror(f_errno));</a>
<a name="497"><span class="lineNum"> 497 </span> : }</a>
<a name="498"><span class="lineNum"> 498 </span> : return -1;</a>
<a name="499"><span class="lineNum"> 499 </span> : /* LCOV_EXCL_STOP */</a>
<a name="500"><span class="lineNum"> 500 </span> : }</a>
<a name="501"><span class="lineNum"> 501 </span> : </a>
<a name="502"><span class="lineNum"> 502 </span> : /* if we shrink, update the valid size, but don't update when growing */</a>
<a name="503"><span class="lineNum"> 503 </span><span class="lineCov"> 2604 : if (split-&gt;valid_size &gt; split-&gt;st.st_size)</span></a>
<a name="504"><span class="lineNum"> 504 </span><span class="lineCov"> 88 : split-&gt;valid_size = split-&gt;st.st_size;</span></a>
<a name="505"><span class="lineNum"> 505 </span> : </a>
<a name="506"><span class="lineNum"> 506 </span><span class="lineCov"> 2604 : return 0;</span></a>
<a name="507"><span class="lineNum"> 507 </span> : }</a>
<a name="508"><span class="lineNum"> 508 </span> : </a>
<a name="509"><span class="lineNum"> 509 </span><span class="lineCov"> 2604 : static int parity_split_is_fixed(struct snapraid_parity_handle* handle, unsigned s)</span></a>
<a name="510"><span class="lineNum"> 510 </span> : {</a>
<a name="511"><span class="lineNum"> 511 </span> : /* next one */</a>
<a name="512"><span class="lineNum"> 512 </span><span class="lineCov"> 2604 : ++s;</span></a>
<a name="513"><span class="lineNum"> 513 </span> : </a>
<a name="514"><span class="lineNum"> 514 </span> : /* the latest one is always growing */</a>
<a name="515"><span class="lineNum"> 515 </span><span class="lineCov"> 2604 : if (s &gt;= handle-&gt;split_mac)</span></a>
<a name="516"><span class="lineNum"> 516 </span><span class="lineCov"> 651 : return 0;</span></a>
<a name="517"><span class="lineNum"> 517 </span> : </a>
<a name="518"><span class="lineNum"> 518 </span> : /* if the next it's 0, this one is growing */</a>
<a name="519"><span class="lineNum"> 519 </span><span class="lineCov"> 1953 : if (handle-&gt;split_map[s].size == 0)</span></a>
<a name="520"><span class="lineNum"> 520 </span><span class="lineCov"> 1321 : return 0;</span></a>
<a name="521"><span class="lineNum"> 521 </span> : </a>
<a name="522"><span class="lineNum"> 522 </span><span class="lineCov"> 632 : return 1;</span></a>
<a name="523"><span class="lineNum"> 523 </span> : }</a>
<a name="524"><span class="lineNum"> 524 </span> : </a>
<a name="525"><span class="lineNum"> 525 </span><span class="lineCov"> 651 : int parity_chsize(struct snapraid_parity_handle* handle, struct snapraid_parity* parity, int* is_modified, data_off_t size, uint32_t block_size, int skip_fallocate, int skip_space_holder)</span></a>
<a name="526"><span class="lineNum"> 526 </span> : {</a>
<a name="527"><span class="lineNum"> 527 </span> : int ret;</a>
<a name="528"><span class="lineNum"> 528 </span> : unsigned s;</a>
<a name="529"><span class="lineNum"> 529 </span> : data_off_t block_mask;</a>
<a name="530"><span class="lineNum"> 530 </span> : </a>
<a name="531"><span class="lineNum"> 531 </span> : /* mask of bits used by the block size */</a>
<a name="532"><span class="lineNum"> 532 </span><span class="lineCov"> 651 : block_mask = ((data_off_t)block_size) - 1;</span></a>
<a name="533"><span class="lineNum"> 533 </span> : </a>
<a name="534"><span class="lineNum"> 534 </span><span class="lineCov"> 651 : if (size &lt; 0) {</span></a>
<a name="535"><span class="lineNum"> 535 </span> : /* LCOV_EXCL_START */</a>
<a name="536"><span class="lineNum"> 536 </span> : errno = ENXIO;</a>
<a name="537"><span class="lineNum"> 537 </span> : return -1;</a>
<a name="538"><span class="lineNum"> 538 </span> : /* LCOV_EXCL_STOP */</a>
<a name="539"><span class="lineNum"> 539 </span> : }</a>
<a name="540"><span class="lineNum"> 540 </span> : </a>
<a name="541"><span class="lineNum"> 541 </span><span class="lineCov"> 3255 : for (s = 0; s &lt; handle-&gt;split_mac; ++s) {</span></a>
<a name="542"><span class="lineNum"> 542 </span><span class="lineCov"> 2604 : struct snapraid_split_handle* split = &amp;handle-&gt;split_map[s];</span></a>
<a name="543"><span class="lineNum"> 543 </span><span class="lineCov"> 2604 : int is_fixed = parity_split_is_fixed(handle, s);</span></a>
<a name="544"><span class="lineNum"> 544 </span> : data_off_t run;</a>
<a name="545"><span class="lineNum"> 545 </span> : </a>
<a name="546"><span class="lineNum"> 546 </span><span class="lineCov"> 2604 : if (is_fixed) {</span></a>
<a name="547"><span class="lineNum"> 547 </span> : /* if the required size is smaller, we have to reduce also the file */</a>
<a name="548"><span class="lineNum"> 548 </span> : /* ignoring the previous size */</a>
<a name="549"><span class="lineNum"> 549 </span><span class="lineCov"> 632 : if (size &lt;= split-&gt;size) {</span></a>
<a name="550"><span class="lineNum"> 550 </span> : /* mark it as not fixed anymore for the later check */</a>
<a name="551"><span class="lineNum"> 551 </span><span class="lineCov"> 9 : is_fixed = 0;</span></a>
<a name="552"><span class="lineNum"> 552 </span> : </a>
<a name="553"><span class="lineNum"> 553 </span><span class="lineCov"> 9 : run = size; /* allocate only the needed size */</span></a>
<a name="554"><span class="lineNum"> 554 </span> : } else {</a>
<a name="555"><span class="lineNum"> 555 </span> : /* if the size cannot be changed, use the fixed one */</a>
<a name="556"><span class="lineNum"> 556 </span><span class="lineCov"> 623 : run = split-&gt;size;</span></a>
<a name="557"><span class="lineNum"> 557 </span> : </a>
<a name="558"><span class="lineNum"> 558 </span><span class="lineCov"> 623 : if ((run &amp; block_mask) != 0) {</span></a>
<a name="559"><span class="lineNum"> 559 </span> : /* LCOV_EXCL_START */</a>
<a name="560"><span class="lineNum"> 560 </span> : errno = ENXIO;</a>
<a name="561"><span class="lineNum"> 561 </span> : log_fatal(EINTERNAL, &quot;Internal inconsistency in split '%s' size with extra '%&quot; PRIu64 &quot;' bytes.\n&quot;, split-&gt;path, run &amp; block_mask);</a>
<a name="562"><span class="lineNum"> 562 </span> : return -1;</a>
<a name="563"><span class="lineNum"> 563 </span> : /* LCOV_EXCL_STOP */</a>
<a name="564"><span class="lineNum"> 564 </span> : }</a>
<a name="565"><span class="lineNum"> 565 </span> : }</a>
<a name="566"><span class="lineNum"> 566 </span> : } else {</a>
<a name="567"><span class="lineNum"> 567 </span> : /* otherwise tries to allocate all the needed remaining size */</a>
<a name="568"><span class="lineNum"> 568 </span><span class="lineCov"> 1972 : run = size;</span></a>
<a name="569"><span class="lineNum"> 569 </span> : }</a>
<a name="570"><span class="lineNum"> 570 </span> : </a>
<a name="571"><span class="lineNum"> 571 </span><span class="lineCov"> 2604 : ret = parity_handle_chsize(split, run, block_size, skip_fallocate, skip_space_holder);</span></a>
<a name="572"><span class="lineNum"> 572 </span><span class="lineCov"> 2604 : if (ret != 0) {</span></a>
<a name="573"><span class="lineNum"> 573 </span> : /* LCOV_EXCL_START */</a>
<a name="574"><span class="lineNum"> 574 </span> : return -1;</a>
<a name="575"><span class="lineNum"> 575 </span> : /* LCOV_EXCL_STOP */</a>
<a name="576"><span class="lineNum"> 576 </span> : }</a>
<a name="577"><span class="lineNum"> 577 </span> : </a>
<a name="578"><span class="lineNum"> 578 </span><span class="lineCov"> 2604 : if (split-&gt;st.st_size &gt; run) {</span></a>
<a name="579"><span class="lineNum"> 579 </span> : /* LCOV_EXCL_START */</a>
<a name="580"><span class="lineNum"> 580 </span> : errno = ENXIO;</a>
<a name="581"><span class="lineNum"> 581 </span> : log_fatal(errno, &quot;Unexpected over resizing parity file '%s' to size %&quot; PRIu64 &quot; resulting in size %&quot; PRIu64 &quot;.\n&quot;, split-&gt;path, run, (uint64_t)split-&gt;st.st_size);</a>
<a name="582"><span class="lineNum"> 582 </span> : return -1;</a>
<a name="583"><span class="lineNum"> 583 </span> : /* LCOV_EXCL_STOP */</a>
<a name="584"><span class="lineNum"> 584 </span><span class="lineCov"> 2604 : } else if (is_fixed &amp;&amp; split-&gt;st.st_size &lt; run) {</span></a>
<a name="585"><span class="lineNum"> 585 </span> : /* LCOV_EXCL_START */</a>
<a name="586"><span class="lineNum"> 586 </span> : errno = ENXIO;</a>
<a name="587"><span class="lineNum"> 587 </span> : log_fatal(errno, &quot;Failed restoring parity file '%s' to size %&quot; PRIu64 &quot; resulting in size %&quot; PRIu64 &quot;.\n&quot;, split-&gt;path, run, (uint64_t)split-&gt;st.st_size);</a>
<a name="588"><span class="lineNum"> 588 </span> : return -1;</a>
<a name="589"><span class="lineNum"> 589 </span> : /* LCOV_EXCL_STOP */</a>
<a name="590"><span class="lineNum"> 590 </span> : } else {</a>
<a name="591"><span class="lineNum"> 591 </span> : /* here it's possible to get less than the requested size */</a>
<a name="592"><span class="lineNum"> 592 </span><span class="lineCov"> 2604 : run = split-&gt;st.st_size;</span></a>
<a name="593"><span class="lineNum"> 593 </span> : </a>
<a name="594"><span class="lineNum"> 594 </span><span class="lineCov"> 2604 : if ((run &amp; block_mask) != 0) {</span></a>
<a name="595"><span class="lineNum"> 595 </span> : /* LCOV_EXCL_START */</a>
<a name="596"><span class="lineNum"> 596 </span> : log_fatal(EINTERNAL, &quot;Internal inconsistency in final parity size %&quot; PRIu64 &quot; with block size %u\n&quot;, run, block_size);</a>
<a name="597"><span class="lineNum"> 597 </span> : os_abort();</a>
<a name="598"><span class="lineNum"> 598 </span> : /* LCOV_EXCL_STOP */</a>
<a name="599"><span class="lineNum"> 599 </span> : }</a>
<a name="600"><span class="lineNum"> 600 </span> : </a>
<a name="601"><span class="lineNum"> 601 </span> : /* store what we have allocated */</a>
<a name="602"><span class="lineNum"> 602 </span><span class="lineCov"> 2604 : split-&gt;size = run;</span></a>
<a name="603"><span class="lineNum"> 603 </span> : </a>
<a name="604"><span class="lineNum"> 604 </span> : /* decrease the remaining size */</a>
<a name="605"><span class="lineNum"> 605 </span><span class="lineCov"> 2604 : size -= run;</span></a>
<a name="606"><span class="lineNum"> 606 </span> : }</a>
<a name="607"><span class="lineNum"> 607 </span> : }</a>
<a name="608"><span class="lineNum"> 608 </span> : </a>
<a name="609"><span class="lineNum"> 609 </span> : /* if we cannot allocate all the space */</a>
<a name="610"><span class="lineNum"> 610 </span><span class="lineCov"> 651 : if (size != 0) {</span></a>
<a name="611"><span class="lineNum"> 611 </span> : /* LCOV_EXCL_START */</a>
<a name="612"><span class="lineNum"> 612 </span> : errno = ENXIO;</a>
<a name="613"><span class="lineNum"> 613 </span> : log_fatal(errno, &quot;Failed to allocate all the required parity space. You miss %&quot; PRIu64 &quot; bytes.\n&quot;, size);</a>
<a name="614"><span class="lineNum"> 614 </span> : return -1;</a>
<a name="615"><span class="lineNum"> 615 </span> : /* LCOV_EXCL_STOP */</a>
<a name="616"><span class="lineNum"> 616 </span> : }</a>
<a name="617"><span class="lineNum"> 617 </span> : </a>
<a name="618"><span class="lineNum"> 618 </span> : /* now copy the new size in the parity data */</a>
<a name="619"><span class="lineNum"> 619 </span><span class="lineCov"> 651 : if (is_modified)</span></a>
<a name="620"><span class="lineNum"> 620 </span><span class="lineCov"> 525 : *is_modified = 0;</span></a>
<a name="621"><span class="lineNum"> 621 </span> : </a>
<a name="622"><span class="lineNum"> 622 </span><span class="lineCov"> 3255 : for (s = 0; s &lt; handle-&gt;split_mac; ++s) {</span></a>
<a name="623"><span class="lineNum"> 623 </span><span class="lineCov"> 2604 : struct snapraid_split_handle* split = &amp;handle-&gt;split_map[s];</span></a>
<a name="624"><span class="lineNum"> 624 </span> : </a>
<a name="625"><span class="lineNum"> 625 </span><span class="lineCov"> 2604 : if (parity-&gt;split_map[s].size != split-&gt;size) {</span></a>
<a name="626"><span class="lineNum"> 626 </span><span class="lineCov"> 346 : parity-&gt;split_map[s].size = split-&gt;size;</span></a>
<a name="627"><span class="lineNum"> 627 </span><span class="lineCov"> 346 : if (is_modified)</span></a>
<a name="628"><span class="lineNum"> 628 </span><span class="lineCov"> 290 : *is_modified = 1;</span></a>
<a name="629"><span class="lineNum"> 629 </span> : }</a>
<a name="630"><span class="lineNum"> 630 </span> : }</a>
<a name="631"><span class="lineNum"> 631 </span> : </a>
<a name="632"><span class="lineNum"> 632 </span><span class="lineCov"> 651 : return 0;</span></a>
<a name="633"><span class="lineNum"> 633 </span> : }</a>
<a name="634"><span class="lineNum"> 634 </span> : </a>
<a name="635"><span class="lineNum"> 635 </span><span class="lineCov"> 431 : int parity_open(struct snapraid_parity_handle* handle, const struct snapraid_parity* parity, unsigned level, int mode, uint32_t block_size, data_off_t limit_size)</span></a>
<a name="636"><span class="lineNum"> 636 </span> : {</a>
<a name="637"><span class="lineNum"> 637 </span> : unsigned s;</a>
<a name="638"><span class="lineNum"> 638 </span> : data_off_t block_mask;</a>
<a name="639"><span class="lineNum"> 639 </span> : </a>
<a name="640"><span class="lineNum"> 640 </span><span class="lineCov"> 431 : handle-&gt;level = level;</span></a>
<a name="641"><span class="lineNum"> 641 </span><span class="lineCov"> 431 : handle-&gt;split_mac = 0;</span></a>
<a name="642"><span class="lineNum"> 642 </span> : </a>
<a name="643"><span class="lineNum"> 643 </span> : /* mask of bits used by the block size */</a>
<a name="644"><span class="lineNum"> 644 </span><span class="lineCov"> 431 : block_mask = ((data_off_t)block_size) - 1;</span></a>
<a name="645"><span class="lineNum"> 645 </span> : </a>
<a name="646"><span class="lineNum"> 646 </span><span class="lineCov"> 2151 : for (s = 0; s &lt; parity-&gt;split_mac; ++s) {</span></a>
<a name="647"><span class="lineNum"> 647 </span><span class="lineCov"> 1721 : struct snapraid_split_handle* split = &amp;handle-&gt;split_map[s];</span></a>
<a name="648"><span class="lineNum"> 648 </span> : int ret;</a>
<a name="649"><span class="lineNum"> 649 </span> : int flags;</a>
<a name="650"><span class="lineNum"> 650 </span> : </a>
<a name="651"><span class="lineNum"> 651 </span><span class="lineCov"> 1721 : advise_init(&amp;split-&gt;advise, mode);</span></a>
<a name="652"><span class="lineNum"> 652 </span><span class="lineCov"> 1721 : pathcpy(split-&gt;path, sizeof(split-&gt;path), parity-&gt;split_map[s].path);</span></a>
<a name="653"><span class="lineNum"> 653 </span><span class="lineCov"> 1721 : split-&gt;size = parity-&gt;split_map[s].size;</span></a>
<a name="654"><span class="lineNum"> 654 </span><span class="lineCov"> 1721 : split-&gt;limit_size = PARITY_LIMIT(limit_size, s, level);</span></a>
<a name="655"><span class="lineNum"> 655 </span> : </a>
<a name="656"><span class="lineNum"> 656 </span> : /* open for read */</a>
<a name="657"><span class="lineNum"> 657 </span> : /* O_NOATIME: do not change access time */</a>
<a name="658"><span class="lineNum"> 658 </span><span class="lineCov"> 1721 : flags = O_RDONLY | O_BINARY | advise_flags(&amp;split-&gt;advise);</span></a>
<a name="659"><span class="lineNum"> 659 </span> : </a>
<a name="660"><span class="lineNum"> 660 </span><span class="lineCov"> 1721 : split-&gt;f = open_noatime(split-&gt;path, flags);</span></a>
<a name="661"><span class="lineNum"> 661 </span><span class="lineCov"> 1721 : if (split-&gt;f == -1) {</span></a>
<a name="662"><span class="lineNum"> 662 </span> : /* LCOV_EXCL_START */</a>
<a name="663"><span class="lineNum"> 663 </span> : log_fatal(errno, &quot;Error opening parity file '%s'. %s.\n&quot;, split-&gt;path, strerror(errno));</a>
<a name="664"><span class="lineNum"> 664 </span> : goto bail;</a>
<a name="665"><span class="lineNum"> 665 </span> : /* LCOV_EXCL_STOP */</a>
<a name="666"><span class="lineNum"> 666 </span> : }</a>
<a name="667"><span class="lineNum"> 667 </span> : </a>
<a name="668"><span class="lineNum"> 668 </span> : /* we have a valid file handle */</a>
<a name="669"><span class="lineNum"> 669 </span><span class="lineCov"> 1720 : ++handle-&gt;split_mac;</span></a>
<a name="670"><span class="lineNum"> 670 </span> : </a>
<a name="671"><span class="lineNum"> 671 </span> : /* get the stat info */</a>
<a name="672"><span class="lineNum"> 672 </span><span class="lineCov"> 1720 : ret = fstat(split-&gt;f, &amp;split-&gt;st);</span></a>
<a name="673"><span class="lineNum"> 673 </span><span class="lineCov"> 1720 : if (ret != 0) {</span></a>
<a name="674"><span class="lineNum"> 674 </span> : /* LCOV_EXCL_START */</a>
<a name="675"><span class="lineNum"> 675 </span> : log_fatal(errno, &quot;Error accessing parity file '%s'. %s.\n&quot;, split-&gt;path, strerror(errno));</a>
<a name="676"><span class="lineNum"> 676 </span> : goto bail;</a>
<a name="677"><span class="lineNum"> 677 </span> : /* LCOV_EXCL_STOP */</a>
<a name="678"><span class="lineNum"> 678 </span> : }</a>
<a name="679"><span class="lineNum"> 679 </span> : </a>
<a name="680"><span class="lineNum"> 680 </span> : /* the initial valid size is the size on disk */</a>
<a name="681"><span class="lineNum"> 681 </span><span class="lineCov"> 1720 : split-&gt;valid_size = split-&gt;st.st_size;</span></a>
<a name="682"><span class="lineNum"> 682 </span> : </a>
<a name="683"><span class="lineNum"> 683 </span> : /**</a>
<a name="684"><span class="lineNum"> 684 </span> : * If the parity size is not yet set, set it now.</a>
<a name="685"><span class="lineNum"> 685 </span> : * This happens when expanding the number of parities,</a>
<a name="686"><span class="lineNum"> 686 </span> : * or when upgrading from a content file that has not split-&gt;size data.</a>
<a name="687"><span class="lineNum"> 687 </span> : */</a>
<a name="688"><span class="lineNum"> 688 </span><span class="lineCov"> 1720 : if (split-&gt;size == PARITY_SIZE_INVALID) {</span></a>
<a name="689"><span class="lineNum"> 689 </span><span class="lineCov"> 40 : split-&gt;size = split-&gt;st.st_size;</span></a>
<a name="690"><span class="lineNum"> 690 </span> : </a>
<a name="691"><span class="lineNum"> 691 </span> : /* ensure that the resulting size if block aligned */</a>
<a name="692"><span class="lineNum"> 692 </span><span class="lineCov"> 40 : if ((split-&gt;size &amp; block_mask) != 0) {</span></a>
<a name="693"><span class="lineNum"> 693 </span> : /* LCOV_EXCL_START */</a>
<a name="694"><span class="lineNum"> 694 </span> : log_fatal(ESOFT, &quot;Error in preallocated size of parity file '%s' with size %&quot; PRIu64 &quot; and block %u .\n&quot;, split-&gt;path, split-&gt;size, block_size);</a>
<a name="695"><span class="lineNum"> 695 </span> : goto bail;</a>
<a name="696"><span class="lineNum"> 696 </span> : /* LCOV_EXCL_STOP */</a>
<a name="697"><span class="lineNum"> 697 </span> : }</a>
<a name="698"><span class="lineNum"> 698 </span> : }</a>
<a name="699"><span class="lineNum"> 699 </span> : </a>
<a name="700"><span class="lineNum"> 700 </span><span class="lineCov"> 1720 : ret = advise_open(&amp;split-&gt;advise, split-&gt;f);</span></a>
<a name="701"><span class="lineNum"> 701 </span><span class="lineCov"> 1720 : if (ret != 0) {</span></a>
<a name="702"><span class="lineNum"> 702 </span> : /* LCOV_EXCL_START */</a>
<a name="703"><span class="lineNum"> 703 </span> : log_fatal(errno, &quot;Error advising parity file '%s'. %s.\n&quot;, split-&gt;path, strerror(errno));</a>
<a name="704"><span class="lineNum"> 704 </span> : goto bail;</a>
<a name="705"><span class="lineNum"> 705 </span> : /* LCOV_EXCL_STOP */</a>
<a name="706"><span class="lineNum"> 706 </span> : }</a>
<a name="707"><span class="lineNum"> 707 </span> : }</a>
<a name="708"><span class="lineNum"> 708 </span> : </a>
<a name="709"><span class="lineNum"> 709 </span><span class="lineCov"> 430 : return 0;</span></a>
<a name="710"><span class="lineNum"> 710 </span> : </a>
<a name="711"><span class="lineNum"> 711 </span><span class="lineCov"> 1 : bail:</span></a>
<a name="712"><span class="lineNum"> 712 </span> : /* LCOV_EXCL_START */</a>
<a name="713"><span class="lineNum"> 713 </span> : for (s = 0; s &lt; handle-&gt;split_mac; ++s) {</a>
<a name="714"><span class="lineNum"> 714 </span> : struct snapraid_split_handle* split = &amp;handle-&gt;split_map[s];</a>
<a name="715"><span class="lineNum"> 715 </span> : close(split-&gt;f);</a>
<a name="716"><span class="lineNum"> 716 </span> : split-&gt;f = -1;</a>
<a name="717"><span class="lineNum"> 717 </span> : }</a>
<a name="718"><span class="lineNum"> 718 </span> : return -1;</a>
<a name="719"><span class="lineNum"> 719 </span> : /* LCOV_EXCL_STOP */</a>
<a name="720"><span class="lineNum"> 720 </span> : }</a>
<a name="721"><span class="lineNum"> 721 </span> : </a>
<a name="722"><span class="lineNum"> 722 </span><span class="lineCov"> 513 : int parity_sync(struct snapraid_parity_handle* handle)</span></a>
<a name="723"><span class="lineNum"> 723 </span> : {</a>
<a name="724"><span class="lineNum"> 724 </span> : #if HAVE_FSYNC</a>
<a name="725"><span class="lineNum"> 725 </span> : unsigned s;</a>
<a name="726"><span class="lineNum"> 726 </span> : </a>
<a name="727"><span class="lineNum"> 727 </span><span class="lineCov"> 2565 : for (s = 0; s &lt; handle-&gt;split_mac; ++s) {</span></a>
<a name="728"><span class="lineNum"> 728 </span><span class="lineCov"> 2052 : struct snapraid_split_handle* split = &amp;handle-&gt;split_map[s];</span></a>
<a name="729"><span class="lineNum"> 729 </span> : int ret;</a>
<a name="730"><span class="lineNum"> 730 </span> : </a>
<a name="731"><span class="lineNum"> 731 </span> : /* Ensure that data changes are written to disk. */</a>
<a name="732"><span class="lineNum"> 732 </span> : /* This is required to ensure that parity is more updated than content */</a>
<a name="733"><span class="lineNum"> 733 </span> : /* in case of a system crash. */</a>
<a name="734"><span class="lineNum"> 734 </span><span class="lineCov"> 2052 : ret = fsync(split-&gt;f);</span></a>
<a name="735"><span class="lineNum"> 735 </span><span class="lineCov"> 2052 : if (ret != 0) {</span></a>
<a name="736"><span class="lineNum"> 736 </span> : /* LCOV_EXCL_START */</a>
<a name="737"><span class="lineNum"> 737 </span> : log_fatal(errno, &quot;Error syncing parity file '%s'. %s.\n&quot;, split-&gt;path, strerror(errno));</a>
<a name="738"><span class="lineNum"> 738 </span> : return -1;</a>
<a name="739"><span class="lineNum"> 739 </span> : /* LCOV_EXCL_STOP */</a>
<a name="740"><span class="lineNum"> 740 </span> : }</a>
<a name="741"><span class="lineNum"> 741 </span> : }</a>
<a name="742"><span class="lineNum"> 742 </span> : #endif</a>
<a name="743"><span class="lineNum"> 743 </span> : </a>
<a name="744"><span class="lineNum"> 744 </span><span class="lineCov"> 513 : return 0;</span></a>
<a name="745"><span class="lineNum"> 745 </span> : }</a>
<a name="746"><span class="lineNum"> 746 </span> : </a>
<a name="747"><span class="lineNum"> 747 </span><span class="lineCov"> 126 : int parity_truncate(struct snapraid_parity_handle* handle)</span></a>
<a name="748"><span class="lineNum"> 748 </span> : {</a>
<a name="749"><span class="lineNum"> 749 </span> : unsigned s;</a>
<a name="750"><span class="lineNum"> 750 </span><span class="lineCov"> 126 : int f_ret = 0;</span></a>
<a name="751"><span class="lineNum"> 751 </span> : </a>
<a name="752"><span class="lineNum"> 752 </span><span class="lineCov"> 630 : for (s = 0; s &lt; handle-&gt;split_mac; ++s) {</span></a>
<a name="753"><span class="lineNum"> 753 </span><span class="lineCov"> 504 : struct snapraid_split_handle* split = &amp;handle-&gt;split_map[s];</span></a>
<a name="754"><span class="lineNum"> 754 </span> : int ret;</a>
<a name="755"><span class="lineNum"> 755 </span> : </a>
<a name="756"><span class="lineNum"> 756 </span> : /* truncate any data that we know it's not valid */</a>
<a name="757"><span class="lineNum"> 757 </span><span class="lineCov"> 504 : ret = ftruncate(split-&gt;f, split-&gt;valid_size);</span></a>
<a name="758"><span class="lineNum"> 758 </span><span class="lineCov"> 504 : if (ret != 0) {</span></a>
<a name="759"><span class="lineNum"> 759 </span> : /* LCOV_EXCL_START */</a>
<a name="760"><span class="lineNum"> 760 </span> : log_fatal(errno, &quot;Error truncating the parity file '%s' to size %&quot; PRIu64 &quot;. %s.\n&quot;, split-&gt;path, split-&gt;valid_size, strerror(errno));</a>
<a name="761"><span class="lineNum"> 761 </span> : f_ret = -1;</a>
<a name="762"><span class="lineNum"> 762 </span> : /* LCOV_EXCL_STOP */</a>
<a name="763"><span class="lineNum"> 763 </span> : </a>
<a name="764"><span class="lineNum"> 764 </span> : /* continue to truncate the others */</a>
<a name="765"><span class="lineNum"> 765 </span> : }</a>
<a name="766"><span class="lineNum"> 766 </span> : }</a>
<a name="767"><span class="lineNum"> 767 </span> : </a>
<a name="768"><span class="lineNum"> 768 </span><span class="lineCov"> 126 : return f_ret;</span></a>
<a name="769"><span class="lineNum"> 769 </span> : }</a>
<a name="770"><span class="lineNum"> 770 </span> : </a>
<a name="771"><span class="lineNum"> 771 </span><span class="lineCov"> 1087 : int parity_close(struct snapraid_parity_handle* handle)</span></a>
<a name="772"><span class="lineNum"> 772 </span> : {</a>
<a name="773"><span class="lineNum"> 773 </span> : unsigned s;</a>
<a name="774"><span class="lineNum"> 774 </span><span class="lineCov"> 1087 : int f_ret = 0;</span></a>
<a name="775"><span class="lineNum"> 775 </span> : </a>
<a name="776"><span class="lineNum"> 776 </span><span class="lineCov"> 5435 : for (s = 0; s &lt; handle-&gt;split_mac; ++s) {</span></a>
<a name="777"><span class="lineNum"> 777 </span><span class="lineCov"> 4348 : struct snapraid_split_handle* split = &amp;handle-&gt;split_map[s];</span></a>
<a name="778"><span class="lineNum"> 778 </span> : int ret;</a>
<a name="779"><span class="lineNum"> 779 </span> : </a>
<a name="780"><span class="lineNum"> 780 </span><span class="lineCov"> 4348 : ret = close(split-&gt;f);</span></a>
<a name="781"><span class="lineNum"> 781 </span><span class="lineCov"> 4348 : if (ret != 0) {</span></a>
<a name="782"><span class="lineNum"> 782 </span> : /* LCOV_EXCL_START */</a>
<a name="783"><span class="lineNum"> 783 </span> : /* This is a serious error, as it may be the result of a failed write */</a>
<a name="784"><span class="lineNum"> 784 </span> : /* identified at later time. */</a>
<a name="785"><span class="lineNum"> 785 </span> : /* In a normal file-system (not NFS) it should never happen */</a>
<a name="786"><span class="lineNum"> 786 </span> : log_fatal(errno, &quot;Error closing parity file '%s'. %s.\n&quot;, split-&gt;path, strerror(errno));</a>
<a name="787"><span class="lineNum"> 787 </span> : f_ret = -1;</a>
<a name="788"><span class="lineNum"> 788 </span> : /* LCOV_EXCL_STOP */</a>
<a name="789"><span class="lineNum"> 789 </span> : </a>
<a name="790"><span class="lineNum"> 790 </span> : /* continue to close the others */</a>
<a name="791"><span class="lineNum"> 791 </span> : }</a>
<a name="792"><span class="lineNum"> 792 </span> : </a>
<a name="793"><span class="lineNum"> 793 </span> : /* reset the descriptor */</a>
<a name="794"><span class="lineNum"> 794 </span><span class="lineCov"> 4348 : split-&gt;f = -1;</span></a>
<a name="795"><span class="lineNum"> 795 </span> : }</a>
<a name="796"><span class="lineNum"> 796 </span> : </a>
<a name="797"><span class="lineNum"> 797 </span><span class="lineCov"> 1087 : return f_ret;</span></a>
<a name="798"><span class="lineNum"> 798 </span> : }</a>
<a name="799"><span class="lineNum"> 799 </span> : </a>
<a name="800"><span class="lineNum"> 800 </span><span class="lineCov"> 4274283 : struct snapraid_split_handle* parity_split_find(struct snapraid_parity_handle* handle, data_off_t* offset)</span></a>
<a name="801"><span class="lineNum"> 801 </span> : {</a>
<a name="802"><span class="lineNum"> 802 </span> : unsigned s;</a>
<a name="803"><span class="lineNum"> 803 </span> : </a>
<a name="804"><span class="lineNum"> 804 </span><span class="lineCov"> 4274283 : if (*offset &lt; 0)</span></a>
<a name="805"><span class="lineNum"> 805 </span><span class="lineNoCov"> 0 : return 0;</span></a>
<a name="806"><span class="lineNum"> 806 </span> : </a>
<a name="807"><span class="lineNum"> 807 </span><span class="lineCov"> 6757945 : for (s = 0; s &lt; handle-&gt;split_mac; ++s) {</span></a>
<a name="808"><span class="lineNum"> 808 </span><span class="lineCov"> 6746585 : struct snapraid_split_handle* split = &amp;handle-&gt;split_map[s];</span></a>
<a name="809"><span class="lineNum"> 809 </span> : </a>
<a name="810"><span class="lineNum"> 810 </span><span class="lineCov"> 6746585 : if (*offset &lt; split-&gt;size)</span></a>
<a name="811"><span class="lineNum"> 811 </span><span class="lineCov"> 4262923 : return split;</span></a>
<a name="812"><span class="lineNum"> 812 </span> : </a>
<a name="813"><span class="lineNum"> 813 </span><span class="lineCov"> 2483662 : *offset -= split-&gt;size;</span></a>
<a name="814"><span class="lineNum"> 814 </span> : }</a>
<a name="815"><span class="lineNum"> 815 </span> : </a>
<a name="816"><span class="lineNum"> 816 </span><span class="lineCov"> 11360 : return 0;</span></a>
<a name="817"><span class="lineNum"> 817 </span> : }</a>
<a name="818"><span class="lineNum"> 818 </span> : </a>
<a name="819"><span class="lineNum"> 819 </span><span class="lineCov"> 648353 : int parity_write(struct snapraid_parity_handle* handle, block_off_t pos, unsigned char* block_buffer, unsigned block_size)</span></a>
<a name="820"><span class="lineNum"> 820 </span> : {</a>
<a name="821"><span class="lineNum"> 821 </span> : ssize_t write_ret;</a>
<a name="822"><span class="lineNum"> 822 </span> : data_off_t offset;</a>
<a name="823"><span class="lineNum"> 823 </span> : struct snapraid_split_handle* split;</a>
<a name="824"><span class="lineNum"> 824 </span> : unsigned count;</a>
<a name="825"><span class="lineNum"> 825 </span> : int ret;</a>
<a name="826"><span class="lineNum"> 826 </span> : </a>
<a name="827"><span class="lineNum"> 827 </span><span class="lineCov"> 648353 : offset = pos * (data_off_t)block_size;</span></a>
<a name="828"><span class="lineNum"> 828 </span> : </a>
<a name="829"><span class="lineNum"> 829 </span><span class="lineCov"> 648353 : split = parity_split_find(handle, &amp;offset);</span></a>
<a name="830"><span class="lineNum"> 830 </span><span class="lineCov"> 648353 : if (!split) {</span></a>
<a name="831"><span class="lineNum"> 831 </span> : /* LCOV_EXCL_START */</a>
<a name="832"><span class="lineNum"> 832 </span> : errno = ENXIO;</a>
<a name="833"><span class="lineNum"> 833 </span> : log_fatal(errno, &quot;Writing parity data outside range at extra offset %&quot; PRIu64 &quot;.\n&quot;, offset);</a>
<a name="834"><span class="lineNum"> 834 </span> : return -1;</a>
<a name="835"><span class="lineNum"> 835 </span> : /* LCOV_EXCL_STOP */</a>
<a name="836"><span class="lineNum"> 836 </span> : }</a>
<a name="837"><span class="lineNum"> 837 </span> : </a>
<a name="838"><span class="lineNum"> 838 </span> : /* update the valid range */</a>
<a name="839"><span class="lineNum"> 839 </span><span class="lineCov"> 648353 : if (split-&gt;valid_size &lt; offset + block_size)</span></a>
<a name="840"><span class="lineNum"> 840 </span><span class="lineCov"> 186950 : split-&gt;valid_size = offset + block_size;</span></a>
<a name="841"><span class="lineNum"> 841 </span> : </a>
<a name="842"><span class="lineNum"> 842 </span><span class="lineCov"> 648353 : count = 0;</span></a>
<a name="843"><span class="lineNum"> 843 </span> : do {</a>
<a name="844"><span class="lineNum"> 844 </span><span class="lineCov"> 648353 : bw_limit(handle-&gt;bw, block_size - count);</span></a>
<a name="845"><span class="lineNum"> 845 </span> : </a>
<a name="846"><span class="lineNum"> 846 </span><span class="lineCov"> 648353 : write_ret = pwrite(split-&gt;f, block_buffer + count, block_size - count, offset + count);</span></a>
<a name="847"><span class="lineNum"> 847 </span><span class="lineCov"> 648353 : if (write_ret == -1) {</span></a>
<a name="848"><span class="lineNum"> 848 </span> : /* LCOV_EXCL_START */</a>
<a name="849"><span class="lineNum"> 849 </span> : if (errno == ENOSPC) {</a>
<a name="850"><span class="lineNum"> 850 </span> : log_fatal(errno, &quot;Failed to grow parity file '%s' using write due lack of space.\n&quot;, split-&gt;path);</a>
<a name="851"><span class="lineNum"> 851 </span> : } else {</a>
<a name="852"><span class="lineNum"> 852 </span> : log_fatal(errno, &quot;Error writing parity file '%s'. %s.\n&quot;, split-&gt;path, strerror(errno));</a>
<a name="853"><span class="lineNum"> 853 </span> : }</a>
<a name="854"><span class="lineNum"> 854 </span> : return -1;</a>
<a name="855"><span class="lineNum"> 855 </span> : /* LCOV_EXCL_STOP */</a>
<a name="856"><span class="lineNum"> 856 </span> : }</a>
<a name="857"><span class="lineNum"> 857 </span><span class="lineCov"> 648353 : if (write_ret == 0) {</span></a>
<a name="858"><span class="lineNum"> 858 </span> : /* LCOV_EXCL_START */</a>
<a name="859"><span class="lineNum"> 859 </span> : errno = ENXIO;</a>
<a name="860"><span class="lineNum"> 860 </span> : log_fatal(errno, &quot;Unexpected 0 write to file '%s'. %s.\n&quot;, split-&gt;path, strerror(errno));</a>
<a name="861"><span class="lineNum"> 861 </span> : return -1;</a>
<a name="862"><span class="lineNum"> 862 </span> : /* LCOV_EXCL_STOP */</a>
<a name="863"><span class="lineNum"> 863 </span> : }</a>
<a name="864"><span class="lineNum"> 864 </span> : </a>
<a name="865"><span class="lineNum"> 865 </span><span class="lineCov"> 648353 : count += write_ret;</span></a>
<a name="866"><span class="lineNum"> 866 </span><span class="lineCov"> 648353 : } while (count &lt; block_size);</span></a>
<a name="867"><span class="lineNum"> 867 </span> : </a>
<a name="868"><span class="lineNum"> 868 </span><span class="lineCov"> 648353 : ret = advise_write(&amp;split-&gt;advise, split-&gt;f, offset, block_size);</span></a>
<a name="869"><span class="lineNum"> 869 </span><span class="lineCov"> 648353 : if (ret != 0) {</span></a>
<a name="870"><span class="lineNum"> 870 </span> : /* LCOV_EXCL_START */</a>
<a name="871"><span class="lineNum"> 871 </span> : log_fatal(errno, &quot;Error advising parity file '%s'. %s.\n&quot;, split-&gt;path, strerror(errno));</a>
<a name="872"><span class="lineNum"> 872 </span> : return -1;</a>
<a name="873"><span class="lineNum"> 873 </span> : /* LCOV_EXCL_STOP */</a>
<a name="874"><span class="lineNum"> 874 </span> : }</a>
<a name="875"><span class="lineNum"> 875 </span> : </a>
<a name="876"><span class="lineNum"> 876 </span><span class="lineCov"> 648353 : return 0;</span></a>
<a name="877"><span class="lineNum"> 877 </span> : }</a>
<a name="878"><span class="lineNum"> 878 </span> : </a>
<a name="879"><span class="lineNum"> 879 </span><span class="lineCov"> 3625930 : int parity_read(struct snapraid_parity_handle* handle, block_off_t pos, unsigned char* block_buffer, unsigned block_size, log_ptr* out)</span></a>
<a name="880"><span class="lineNum"> 880 </span> : {</a>
<a name="881"><span class="lineNum"> 881 </span> : ssize_t read_ret;</a>
<a name="882"><span class="lineNum"> 882 </span> : data_off_t offset;</a>
<a name="883"><span class="lineNum"> 883 </span> : unsigned count;</a>
<a name="884"><span class="lineNum"> 884 </span> : struct snapraid_split_handle* split;</a>
<a name="885"><span class="lineNum"> 885 </span> : int ret;</a>
<a name="886"><span class="lineNum"> 886 </span> : </a>
<a name="887"><span class="lineNum"> 887 </span><span class="lineCov"> 3625930 : offset = pos * (data_off_t)block_size;</span></a>
<a name="888"><span class="lineNum"> 888 </span> : </a>
<a name="889"><span class="lineNum"> 889 </span><span class="lineCov"> 3625930 : split = parity_split_find(handle, &amp;offset);</span></a>
<a name="890"><span class="lineNum"> 890 </span><span class="lineCov"> 3625930 : if (!split) {</span></a>
<a name="891"><span class="lineNum"> 891 </span> : /* LCOV_EXCL_START */</a>
<a name="892"><span class="lineNum"> 892 </span> : errno = ENXIO;</a>
<a name="893"><span class="lineNum"> 893 </span> : out(errno, &quot;Reading parity data outside range at extra offset %&quot; PRIu64 &quot;.\n&quot;, offset);</a>
<a name="894"><span class="lineNum"> 894 </span> : return -1;</a>
<a name="895"><span class="lineNum"> 895 </span> : /* LCOV_EXCL_STOP */</a>
<a name="896"><span class="lineNum"> 896 </span> : }</a>
<a name="897"><span class="lineNum"> 897 </span> : </a>
<a name="898"><span class="lineNum"> 898 </span> : /* if read is completely out of the valid range */</a>
<a name="899"><span class="lineNum"> 899 </span><span class="lineCov"> 3614570 : if (offset &gt;= split-&gt;valid_size) {</span></a>
<a name="900"><span class="lineNum"> 900 </span> : /* LCOV_EXCL_START */</a>
<a name="901"><span class="lineNum"> 901 </span> : errno = ENXIO;</a>
<a name="902"><span class="lineNum"> 902 </span> : out(errno, &quot;Reading over the end from parity file '%s' at offset %&quot; PRIu64 &quot; for size %u.\n&quot;, split-&gt;path, offset, block_size);</a>
<a name="903"><span class="lineNum"> 903 </span> : return -1;</a>
<a name="904"><span class="lineNum"> 904 </span> : /* LCOV_EXCL_STOP */</a>
<a name="905"><span class="lineNum"> 905 </span> : }</a>
<a name="906"><span class="lineNum"> 906 </span> : </a>
<a name="907"><span class="lineNum"> 907 </span><span class="lineCov"> 3529108 : count = 0;</span></a>
<a name="908"><span class="lineNum"> 908 </span><span class="lineCov"> 3529108 : errno = 0;</span></a>
<a name="909"><span class="lineNum"> 909 </span> : do {</a>
<a name="910"><span class="lineNum"> 910 </span><span class="lineCov"> 3529108 : bw_limit(handle-&gt;bw, block_size - count);</span></a>
<a name="911"><span class="lineNum"> 911 </span> : </a>
<a name="912"><span class="lineNum"> 912 </span><span class="lineCov"> 3529108 : read_ret = pread(split-&gt;f, block_buffer + count, block_size - count, offset + count);</span></a>
<a name="913"><span class="lineNum"> 913 </span><span class="lineCov"> 3529108 : if (read_ret == -1) {</span></a>
<a name="914"><span class="lineNum"> 914 </span> : /* LCOV_EXCL_START */</a>
<a name="915"><span class="lineNum"> 915 </span> : out(errno, &quot;Error reading parity file '%s' at offset %&quot; PRIu64 &quot; for size %u. %s.\n&quot;, split-&gt;path, offset + count, block_size - count, strerror(errno));</a>
<a name="916"><span class="lineNum"> 916 </span> : return -1;</a>
<a name="917"><span class="lineNum"> 917 </span> : /* LCOV_EXCL_STOP */</a>
<a name="918"><span class="lineNum"> 918 </span> : }</a>
<a name="919"><span class="lineNum"> 919 </span><span class="lineCov"> 3529108 : if (read_ret == 0) {</span></a>
<a name="920"><span class="lineNum"> 920 </span> : /* LCOV_EXCL_START */</a>
<a name="921"><span class="lineNum"> 921 </span> : if (errno == 0)</a>
<a name="922"><span class="lineNum"> 922 </span> : errno = ENXIO;</a>
<a name="923"><span class="lineNum"> 923 </span> : out(errno, &quot;Unexpected end of parity file '%s' at offset %&quot; PRIu64 &quot;. %s.\n&quot;, split-&gt;path, offset, strerror(errno));</a>
<a name="924"><span class="lineNum"> 924 </span> : return -1;</a>
<a name="925"><span class="lineNum"> 925 </span> : /* LCOV_EXCL_STOP */</a>
<a name="926"><span class="lineNum"> 926 </span> : }</a>
<a name="927"><span class="lineNum"> 927 </span> : </a>
<a name="928"><span class="lineNum"> 928 </span><span class="lineCov"> 3529108 : count += read_ret;</span></a>
<a name="929"><span class="lineNum"> 929 </span><span class="lineCov"> 3529108 : } while (count &lt; block_size);</span></a>
<a name="930"><span class="lineNum"> 930 </span> : </a>
<a name="931"><span class="lineNum"> 931 </span><span class="lineCov"> 3529108 : ret = advise_read(&amp;split-&gt;advise, split-&gt;f, offset, block_size);</span></a>
<a name="932"><span class="lineNum"> 932 </span><span class="lineCov"> 3529108 : if (ret != 0) {</span></a>
<a name="933"><span class="lineNum"> 933 </span> : /* LCOV_EXCL_START */</a>
<a name="934"><span class="lineNum"> 934 </span> : out(errno, &quot;Error advising parity file '%s'. %s.\n&quot;, split-&gt;path, strerror(errno));</a>
<a name="935"><span class="lineNum"> 935 </span> : return -1;</a>
<a name="936"><span class="lineNum"> 936 </span> : /* LCOV_EXCL_STOP */</a>
<a name="937"><span class="lineNum"> 937 </span> : }</a>
<a name="938"><span class="lineNum"> 938 </span> : </a>
<a name="939"><span class="lineNum"> 939 </span><span class="lineCov"> 3529108 : return block_size;</span></a>
<a name="940"><span class="lineNum"> 940 </span> : }</a>
<a name="941"><span class="lineNum"> 941 </span> : </a>
</pre>
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<tr><td class="versionInfo">Generated by: <a href="https://github.com/linux-test-project/lcov" target="_parent">LCOV version 1.0</a></td></tr>
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