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<title>LCOV - lcov.info - cmdline/parity.c</title>
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<tr><td class="title">LCOV - code coverage report</td></tr>
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<td width="10%" class="headerItem">Current view:</td>
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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.html">functions</a>)</span></td>
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<td width="15%"></td>
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<td width="10%" class="headerCovTableHead">Hit</td>
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<td width="10%" class="headerCovTableHead">Total</td>
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<td width="15%" class="headerCovTableHead">Coverage</td>
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</tr>
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<tr>
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<td class="headerItem">Test:</td>
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<td class="headerValue">lcov.info</td>
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<td></td>
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<td class="headerItem">Lines:</td>
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<td class="headerCovTableEntry">217</td>
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<td class="headerCovTableEntry">236</td>
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<td class="headerCovTableEntryHi">91.9 %</td>
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</tr>
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<tr>
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<td class="headerItem">Date:</td>
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<td class="headerValue">2016-11-21</td>
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<td></td>
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<td class="headerItem">Functions:</td>
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<td class="headerCovTableEntry">18</td>
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<td class="headerCovTableEntry">19</td>
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<td class="headerCovTableEntryHi">94.7 %</td>
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</tr>
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<pre class="sourceHeading"> Line data Source code</pre>
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<pre class="source">
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<a name="1"><span class="lineNum"> 1 </span> : /*</a>
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<span class="lineNum"> 2 </span> : * Copyright (C) 2011 Andrea Mazzoleni
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<span class="lineNum"> 3 </span> : *
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<span class="lineNum"> 4 </span> : * This program is free software: you can redistribute it and/or modify
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<span class="lineNum"> 5 </span> : * it under the terms of the GNU General Public License as published by
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<span class="lineNum"> 6 </span> : * the Free Software Foundation, either version 3 of the License, or
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<span class="lineNum"> 7 </span> : * (at your option) any later version.
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<span class="lineNum"> 8 </span> : *
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<span class="lineNum"> 9 </span> : * This program is distributed in the hope that it will be useful,
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<span class="lineNum"> 10 </span> : * but WITHOUT ANY WARRANTY; without even the implied warranty of
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<span class="lineNum"> 11 </span> : * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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<span class="lineNum"> 12 </span> : * GNU General Public License for more details.
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<span class="lineNum"> 13 </span> : *
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<span class="lineNum"> 14 </span> : * You should have received a copy of the GNU General Public License
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<span class="lineNum"> 15 </span> : * along with this program. If not, see <http://www.gnu.org/licenses/>.
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<span class="lineNum"> 16 </span> : */
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<span class="lineNum"> 17 </span> :
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<span class="lineNum"> 18 </span> : #include "portable.h"
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<span class="lineNum"> 19 </span> :
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<span class="lineNum"> 20 </span> : #include "support.h"
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<span class="lineNum"> 21 </span> : #include "elem.h"
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<span class="lineNum"> 22 </span> : #include "state.h"
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<span class="lineNum"> 23 </span> : #include "parity.h"
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<span class="lineNum"> 24 </span> : #include "handle.h"
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<span class="lineNum"> 25 </span> :
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<span class="lineNum"> 26 </span> : /**
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<span class="lineNum"> 27 </span> : * Pseudo random limits for parity
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<span class="lineNum"> 28 </span> : */
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<span class="lineNum"> 29 </span> : #define PARITY_LIMIT(size,split,level) \
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<span class="lineNum"> 30 </span> : size ? size + (123562341 + split * 634542351 + level * 983491341) % size : 0
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<span class="lineNum"> 31 </span> :
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<span class="lineNum"> 32 </span> : /****************************************************************************/
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<a name="33"><span class="lineNum"> 33 </span> : /* parity */</a>
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<span class="lineNum"> 34 </span> :
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<span class="lineNum"> 35 </span><span class="lineCov"> 642 : block_off_t parity_allocated_size(struct snapraid_state* state)</span>
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<span class="lineNum"> 36 </span> : {
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<span class="lineNum"> 37 </span> : block_off_t parity_block;
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<span class="lineNum"> 38 </span> : tommy_node* i;
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<span class="lineNum"> 39 </span> :
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<span class="lineNum"> 40 </span> : /* compute the size of the parity file */
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<span class="lineNum"> 41 </span><span class="lineCov"> 642 : parity_block = 0;</span>
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<span class="lineNum"> 42 </span><span class="lineCov"> 4484 : for (i = state->disklist; i != 0; i = i->next) {</span>
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<span class="lineNum"> 43 </span><span class="lineCov"> 3842 : struct snapraid_disk* disk = i->data;</span>
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<span class="lineNum"> 44 </span> :
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<span class="lineNum"> 45 </span> : /* start from the declared size */
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<span class="lineNum"> 46 </span><span class="lineCov"> 3842 : block_off_t block = fs_size(disk);</span>
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<span class="lineNum"> 47 </span> :
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<span class="lineNum"> 48 </span> : /* decrease the block until an allocated one, but part of a file */
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<span class="lineNum"> 49 </span> : /* we don't stop at deleted blocks, because we want to have them cleared */
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<span class="lineNum"> 50 </span> : /* if they are at the end of the parity */
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<span class="lineNum"> 51 </span><span class="lineCov"> 190232 : while (block > parity_block && !block_has_file(fs_par2block_find(disk, block - 1)))</span>
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<span class="lineNum"> 52 </span><span class="lineCov"> 182548 : --block;</span>
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<span class="lineNum"> 53 </span> :
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<span class="lineNum"> 54 </span> : /* get the highest value */
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<span class="lineNum"> 55 </span><span class="lineCov"> 3842 : if (block > parity_block)</span>
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<span class="lineNum"> 56 </span><span class="lineCov"> 2267 : parity_block = block;</span>
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<span class="lineNum"> 57 </span> : }
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<span class="lineNum"> 58 </span> :
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<span class="lineNum"> 59 </span><span class="lineCov"> 642 : return parity_block;</span>
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<a name="60"><span class="lineNum"> 60 </span> : }</a>
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<span class="lineNum"> 61 </span> :
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<span class="lineNum"> 62 </span><span class="lineCov"> 87 : block_off_t parity_used_size(struct snapraid_state* state)</span>
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<span class="lineNum"> 63 </span> : {
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<span class="lineNum"> 64 </span> : block_off_t parity_block;
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<span class="lineNum"> 65 </span> : tommy_node* i;
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<span class="lineNum"> 66 </span> :
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<span class="lineNum"> 67 </span> : /* compute the size of the parity file */
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<span class="lineNum"> 68 </span><span class="lineCov"> 87 : parity_block = 0;</span>
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<span class="lineNum"> 69 </span><span class="lineCov"> 608 : for (i = state->disklist; i != 0; i = i->next) {</span>
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<span class="lineNum"> 70 </span><span class="lineCov"> 521 : struct snapraid_disk* disk = i->data;</span>
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<span class="lineNum"> 71 </span> :
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<span class="lineNum"> 72 </span> : /* start from the declared size */
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<span class="lineNum"> 73 </span><span class="lineCov"> 521 : block_off_t block = fs_size(disk);</span>
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<span class="lineNum"> 74 </span> :
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<span class="lineNum"> 75 </span> : /* decrease the block until an used one */
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<span class="lineNum"> 76 </span><span class="lineCov"> 221718 : while (block > parity_block && !block_has_file_and_valid_parity(fs_par2block_find(disk, block - 1)))</span>
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<span class="lineNum"> 77 </span><span class="lineCov"> 220676 : --block;</span>
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<span class="lineNum"> 78 </span> :
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<span class="lineNum"> 79 </span> : /* get the highest value */
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<span class="lineNum"> 80 </span><span class="lineCov"> 521 : if (block > parity_block)</span>
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<span class="lineNum"> 81 </span><span class="lineCov"> 286 : parity_block = block;</span>
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<span class="lineNum"> 82 </span> : }
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<span class="lineNum"> 83 </span> :
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<span class="lineNum"> 84 </span><span class="lineCov"> 87 : return parity_block;</span>
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<a name="85"><span class="lineNum"> 85 </span> : }</a>
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<span class="lineNum"> 86 </span> :
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<span class="lineNum"> 87 </span><span class="lineCov"> 2 : int parity_is_invalid(struct snapraid_state* state)</span>
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<span class="lineNum"> 88 </span> : {
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<span class="lineNum"> 89 </span> : block_off_t blockmax;
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<span class="lineNum"> 90 </span> : block_off_t i;
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<span class="lineNum"> 91 </span> :
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<span class="lineNum"> 92 </span><span class="lineCov"> 2 : blockmax = parity_allocated_size(state);</span>
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<span class="lineNum"> 93 </span> :
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<span class="lineNum"> 94 </span><span class="lineCov"> 2 : for (i = 0; i < blockmax; ++i) {</span>
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<span class="lineNum"> 95 </span> : tommy_node* node_disk;
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<span class="lineNum"> 96 </span> : int one_invalid;
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<span class="lineNum"> 97 </span> : int one_valid;
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<span class="lineNum"> 98 </span> :
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<span class="lineNum"> 99 </span> : /* for each disk */
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<span class="lineNum"> 100 </span><span class="lineCov"> 1 : one_invalid = 0;</span>
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<span class="lineNum"> 101 </span><span class="lineCov"> 1 : one_valid = 0;</span>
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<span class="lineNum"> 102 </span><span class="lineCov"> 7 : for (node_disk = state->disklist; node_disk != 0; node_disk = node_disk->next) {</span>
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<span class="lineNum"> 103 </span><span class="lineCov"> 6 : struct snapraid_disk* disk = node_disk->data;</span>
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<span class="lineNum"> 104 </span><span class="lineCov"> 6 : struct snapraid_block* block = fs_par2block_find(disk, i);</span>
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<span class="lineNum"> 105 </span> :
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<span class="lineNum"> 106 </span><span class="lineCov"> 6 : if (block_has_file(block))</span>
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<span class="lineNum"> 107 </span><span class="lineCov"> 5 : one_valid = 1;</span>
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<span class="lineNum"> 108 </span><span class="lineCov"> 6 : if (block_has_invalid_parity(block))</span>
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<span class="lineNum"> 109 </span><span class="lineCov"> 2 : one_invalid = 1;</span>
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<span class="lineNum"> 110 </span> : }
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<span class="lineNum"> 111 </span> :
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<span class="lineNum"> 112 </span> : /* if both valid and invalid, we need to update */
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<span class="lineNum"> 113 </span><span class="lineCov"> 1 : if (one_invalid && one_valid)</span>
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<span class="lineNum"> 114 </span><span class="lineCov"> 1 : return 1;</span>
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<span class="lineNum"> 115 </span> : }
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<span class="lineNum"> 116 </span> :
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<span class="lineNum"> 117 </span><span class="lineCov"> 1 : return 0;</span>
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<a name="118"><span class="lineNum"> 118 </span> : }</a>
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<span class="lineNum"> 119 </span> :
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<span class="lineNum"> 120 </span><span class="lineNoCov"> 0 : void parity_overflow(struct snapraid_state* state, data_off_t size)</span>
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<span class="lineNum"> 121 </span> : {
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<span class="lineNum"> 122 </span> : tommy_node* i;
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<span class="lineNum"> 123 </span> : block_off_t blockalloc;
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<span class="lineNum"> 124 </span><span class="lineNoCov"> 0 : int found = 0;</span>
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<span class="lineNum"> 125 </span> : char esc_buffer[ESC_MAX];
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<span class="lineNum"> 126 </span> :
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<span class="lineNum"> 127 </span> : /* don't report if everything is outside or if the file is not accessible */
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<span class="lineNum"> 128 </span><span class="lineNoCov"> 0 : if (size == 0) {</span>
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<span class="lineNum"> 129 </span><span class="lineNoCov"> 0 : return;</span>
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<span class="lineNum"> 130 </span> : }
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<span class="lineNum"> 131 </span> :
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<span class="lineNum"> 132 </span><span class="lineNoCov"> 0 : blockalloc = size / state->block_size;</span>
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<span class="lineNum"> 133 </span> :
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<span class="lineNum"> 134 </span> : /* for all disks */
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<span class="lineNum"> 135 </span><span class="lineNoCov"> 0 : for (i = state->disklist; i != 0; i = i->next) {</span>
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<span class="lineNum"> 136 </span><span class="lineNoCov"> 0 : struct snapraid_disk* disk = i->data;</span>
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<span class="lineNum"> 137 </span> : tommy_node* j;
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<span class="lineNum"> 138 </span> :
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<span class="lineNum"> 139 </span> : /* for all files */
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<span class="lineNum"> 140 </span><span class="lineNoCov"> 0 : for (j = disk->filelist; j != 0; j = j->next) {</span>
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<span class="lineNum"> 141 </span><span class="lineNoCov"> 0 : struct snapraid_file* file = j->data;</span>
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<span class="lineNum"> 142 </span> :
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<span class="lineNum"> 143 </span><span class="lineNoCov"> 0 : if (file->blockmax > 0) {</span>
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<span class="lineNum"> 144 </span><span class="lineNoCov"> 0 : block_off_t parity_pos = fs_file2par_get(disk, file, file->blockmax - 1);</span>
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<span class="lineNum"> 145 </span><span class="lineNoCov"> 0 : if (parity_pos >= blockalloc) {</span>
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<span class="lineNum"> 146 </span><span class="lineNoCov"> 0 : found = 1;</span>
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<span class="lineNum"> 147 </span><span class="lineNoCov"> 0 : log_tag("outofparity:%s:%s\n", disk->name, esc_tag(file->sub, esc_buffer));</span>
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<span class="lineNum"> 148 </span><span class="lineNoCov"> 0 : log_fatal("outofparity %s%s\n", disk->dir, file->sub);</span>
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<span class="lineNum"> 149 </span> : }
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<span class="lineNum"> 150 </span> : }
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<span class="lineNum"> 151 </span> : }
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<span class="lineNum"> 152 </span> : }
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<span class="lineNum"> 153 </span> :
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<span class="lineNum"> 154 </span><span class="lineNoCov"> 0 : if (found) {</span>
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<span class="lineNum"> 155 </span><span class="lineNoCov"> 0 : log_fatal("\nYour data requires more parity than the available space.\n");</span>
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<span class="lineNum"> 156 </span><span class="lineNoCov"> 0 : log_fatal("Please move the files 'outofparity' to another data disk.\n");</span>
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<span class="lineNum"> 157 </span> : }
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<a name="158"><span class="lineNum"> 158 </span> : }</a>
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<span class="lineNum"> 159 </span> :
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<span class="lineNum"> 160 </span><span class="lineCov"> 487 : void parity_size(struct snapraid_parity_handle* handle, data_off_t* out_size)</span>
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<span class="lineNum"> 161 </span> : {
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<span class="lineNum"> 162 </span> : unsigned s;
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<span class="lineNum"> 163 </span> : data_off_t size;
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<span class="lineNum"> 164 </span> :
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<span class="lineNum"> 165 </span> : /* now compute the size summing all the parity splits */
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<span class="lineNum"> 166 </span><span class="lineCov"> 487 : size = 0;</span>
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<span class="lineNum"> 167 </span> :
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<span class="lineNum"> 168 </span><span class="lineCov"> 2435 : for (s = 0;s < handle->split_mac;++s) {</span>
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<span class="lineNum"> 169 </span><span class="lineCov"> 1948 : struct snapraid_split_handle* split = &handle->split_map[s];</span>
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<span class="lineNum"> 170 </span> :
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<span class="lineNum"> 171 </span><span class="lineCov"> 1948 : size += split->size;</span>
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<span class="lineNum"> 172 </span> : }
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<span class="lineNum"> 173 </span> :
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<span class="lineNum"> 174 </span><span class="lineCov"> 487 : *out_size = size;</span>
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<a name="175"><span class="lineNum"> 175 </span><span class="lineCov"> 487 : }</span></a>
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<span class="lineNum"> 176 </span> :
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<span class="lineNum"> 177 </span><span class="lineCov"> 621 : 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>
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<span class="lineNum"> 178 </span> : {
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<span class="lineNum"> 179 </span> : unsigned s;
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<span class="lineNum"> 180 </span> : data_off_t block_mask;
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<span class="lineNum"> 181 </span> :
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<span class="lineNum"> 182 </span> : /* mask of bits used by the block size */
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<span class="lineNum"> 183 </span><span class="lineCov"> 621 : block_mask = ((data_off_t)block_size) - 1;</span>
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<span class="lineNum"> 184 </span> :
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<span class="lineNum"> 185 </span><span class="lineCov"> 621 : handle->level = level;</span>
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<span class="lineNum"> 186 </span><span class="lineCov"> 621 : handle->split_mac = 0;</span>
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<span class="lineNum"> 187 </span> :
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<span class="lineNum"> 188 </span><span class="lineCov"> 3105 : for (s = 0;s < parity->split_mac;++s) {</span>
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<span class="lineNum"> 189 </span><span class="lineCov"> 2484 : struct snapraid_split_handle* split = &handle->split_map[s];</span>
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<span class="lineNum"> 190 </span> : int ret;
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<span class="lineNum"> 191 </span> : int flags;
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<span class="lineNum"> 192 </span> :
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<span class="lineNum"> 193 </span><span class="lineCov"> 2484 : advise_init(&split->advise, mode);</span>
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<span class="lineNum"> 194 </span><span class="lineCov"> 2484 : pathcpy(split->path, sizeof(split->path), parity->split_map[s].path);</span>
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<span class="lineNum"> 195 </span><span class="lineCov"> 2484 : split->size = parity->split_map[s].size;</span>
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<span class="lineNum"> 196 </span><span class="lineCov"> 2484 : split->limit_size = PARITY_LIMIT(limit_size, s, level);</span>
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<span class="lineNum"> 197 </span> :
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<span class="lineNum"> 198 </span> : /* opening in sequential mode in Windows */
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<span class="lineNum"> 199 </span><span class="lineCov"> 2484 : flags = O_RDWR | O_CREAT | O_BINARY | advise_flags(&split->advise);</span>
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<span class="lineNum"> 200 </span><span class="lineCov"> 2484 : split->f = open(split->path, flags, 0600);</span>
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<span class="lineNum"> 201 </span><span class="lineCov"> 2484 : if (split->f == -1) {</span>
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<span class="lineNum"> 202 </span> : /* LCOV_EXCL_START */
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<span class="lineNum"> 203 </span> : log_fatal("Error opening parity file '%s'. %s.\n", split->path, strerror(errno));
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<span class="lineNum"> 204 </span> : goto bail;
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<span class="lineNum"> 205 </span> : /* LCOV_EXCL_STOP */
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<span class="lineNum"> 206 </span> : }
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<span class="lineNum"> 207 </span> :
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<span class="lineNum"> 208 </span> : /* we have a valid file handle */
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<span class="lineNum"> 209 </span><span class="lineCov"> 2484 : ++handle->split_mac;</span>
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<span class="lineNum"> 210 </span> :
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<span class="lineNum"> 211 </span> : /* get the stat info */
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<span class="lineNum"> 212 </span><span class="lineCov"> 2484 : ret = fstat(split->f, &split->st);</span>
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<span class="lineNum"> 213 </span><span class="lineCov"> 2484 : if (ret != 0) {</span>
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<span class="lineNum"> 214 </span> : /* LCOV_EXCL_START */
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<span class="lineNum"> 215 </span> : log_fatal("Error accessing parity file '%s'. %s.\n", split->path, strerror(errno));
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<span class="lineNum"> 216 </span> : goto bail;
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<span class="lineNum"> 217 </span> : /* LCOV_EXCL_STOP */
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<span class="lineNum"> 218 </span> : }
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|
<span class="lineNum"> 219 </span> :
|
|
<span class="lineNum"> 220 </span> : /**
|
|
<span class="lineNum"> 221 </span> : * If the parity size is not yet set, set it now.
|
|
<span class="lineNum"> 222 </span> : * This happens when expanding the number of parities,
|
|
<span class="lineNum"> 223 </span> : * or when upgrading from a content file that has not split->size data.
|
|
<span class="lineNum"> 224 </span> : */
|
|
<span class="lineNum"> 225 </span><span class="lineCov"> 2484 : if (split->size == PARITY_SIZE_INVALID) {</span>
|
|
<span class="lineNum"> 226 </span><span class="lineCov"> 144 : split->size = split->st.st_size;</span>
|
|
<span class="lineNum"> 227 </span> :
|
|
<span class="lineNum"> 228 </span> : /* ensure that the resulting size if block aligned */
|
|
<span class="lineNum"> 229 </span><span class="lineCov"> 144 : if ((split->size & block_mask) != 0) {</span>
|
|
<span class="lineNum"> 230 </span> : /* LCOV_EXCL_START */
|
|
<span class="lineNum"> 231 </span> : log_fatal("Error in preallocated size of parity file '%s' with size %" PRIu64 " and block %u .\n", split->path, split->size, block_size);
|
|
<span class="lineNum"> 232 </span> : goto bail;
|
|
<span class="lineNum"> 233 </span> : /* LCOV_EXCL_STOP */
|
|
<span class="lineNum"> 234 </span> : }
|
|
<span class="lineNum"> 235 </span> : }
|
|
<span class="lineNum"> 236 </span> :
|
|
<span class="lineNum"> 237 </span><span class="lineCov"> 2484 : ret = advise_open(&split->advise, split->f);</span>
|
|
<span class="lineNum"> 238 </span><span class="lineCov"> 2484 : if (ret != 0) {</span>
|
|
<span class="lineNum"> 239 </span> : /* LCOV_EXCL_START */
|
|
<span class="lineNum"> 240 </span> : log_fatal("Error advising parity file '%s'. %s.\n", split->path, strerror(errno));
|
|
<span class="lineNum"> 241 </span> : goto bail;
|
|
<span class="lineNum"> 242 </span> : /* LCOV_EXCL_STOP */
|
|
<span class="lineNum"> 243 </span> : }
|
|
<span class="lineNum"> 244 </span> : }
|
|
<span class="lineNum"> 245 </span> :
|
|
<span class="lineNum"> 246 </span><span class="lineCov"> 621 : return 0;</span>
|
|
<span class="lineNum"> 247 </span> :
|
|
<span class="lineNum"> 248 </span> : bail:
|
|
<span class="lineNum"> 249 </span> : /* LCOV_EXCL_START */
|
|
<span class="lineNum"> 250 </span> : for (s = 0;s < handle->split_mac;++s) {
|
|
<span class="lineNum"> 251 </span> : struct snapraid_split_handle* split = &handle->split_map[s];
|
|
<span class="lineNum"> 252 </span> : close(split->f);
|
|
<span class="lineNum"> 253 </span> : split->f = -1;
|
|
<span class="lineNum"> 254 </span> : }
|
|
<span class="lineNum"> 255 </span> : return -1;
|
|
<span class="lineNum"> 256 </span> : /* LCOV_EXCL_STOP */
|
|
<a name="257"><span class="lineNum"> 257 </span> : }</a>
|
|
<span class="lineNum"> 258 </span> :
|
|
<span class="lineNum"> 259 </span><span class="lineCov"> 719 : static int parity_handle_grow(struct snapraid_split_handle* split, data_off_t size, int skip_fallocate)</span>
|
|
<span class="lineNum"> 260 </span> : {
|
|
<span class="lineNum"> 261 </span> : int ret;
|
|
<span class="lineNum"> 262 </span> :
|
|
<span class="lineNum"> 263 </span> : /* simulate a failure for testing limits */
|
|
<span class="lineNum"> 264 </span><span class="lineCov"> 719 : if (split->limit_size != 0 && size > (data_off_t)split->limit_size)</span>
|
|
<span class="lineNum"> 265 </span><span class="lineCov"> 138 : return -1;</span>
|
|
<span class="lineNum"> 266 </span> :
|
|
<span class="lineNum"> 267 </span> : #if HAVE_FALLOCATE
|
|
<span class="lineNum"> 268 </span><span class="lineCov"> 581 : if (!skip_fallocate) {</span>
|
|
<span class="lineNum"> 269 </span> : /*
|
|
<span class="lineNum"> 270 </span> : * Allocate real space using the specific Linux fallocate() operation.
|
|
<span class="lineNum"> 271 </span> : * If the underline file-system doesn't support it, this operation fails.
|
|
<span class="lineNum"> 272 </span> : *
|
|
<span class="lineNum"> 273 </span> : * Instead posix_fallocate() fallbacks to write the whole file,
|
|
<span class="lineNum"> 274 </span> : * and we cannot use it as we may need to initialize a multi terabyte
|
|
<span class="lineNum"> 275 </span> : * file.
|
|
<span class="lineNum"> 276 </span> : *
|
|
<span class="lineNum"> 277 </span> : * See: fallocate vs posix_fallocate
|
|
<span class="lineNum"> 278 </span> : * http://stackoverflow.com/questions/14063046/fallocate-vs-posix-fallocate
|
|
<span class="lineNum"> 279 </span> : */
|
|
<span class="lineNum"> 280 </span><span class="lineCov"> 570 : ret = fallocate(split->f, 0, 0, size);</span>
|
|
<span class="lineNum"> 281 </span> :
|
|
<span class="lineNum"> 282 </span> : /*
|
|
<span class="lineNum"> 283 </span> : * In some legacy system fallocate() may return the error number
|
|
<span class="lineNum"> 284 </span> : * as positive integer, and in this case it doesn't set errno.
|
|
<span class="lineNum"> 285 </span> : *
|
|
<span class="lineNum"> 286 </span> : * Detect and handle this case.
|
|
<span class="lineNum"> 287 </span> : *
|
|
<span class="lineNum"> 288 </span> : * See: Fix fallocate error return on i386
|
|
<span class="lineNum"> 289 </span> : * https://sourceware.org/ml/libc-hacker/2010-04/msg00000.html
|
|
<span class="lineNum"> 290 </span> : *
|
|
<span class="lineNum"> 291 </span> : * See: [PATCH XFS] Fix error return for fallocate() on XFS
|
|
<span class="lineNum"> 292 </span> : * http://oss.sgi.com/archives/xfs/2009-11/msg00201.html
|
|
<span class="lineNum"> 293 </span> : */
|
|
<span class="lineNum"> 294 </span><span class="lineCov"> 570 : if (ret > 0) {</span>
|
|
<span class="lineNum"> 295 </span> : /* LCOV_EXCL_START */
|
|
<span class="lineNum"> 296 </span> : errno = ret;
|
|
<span class="lineNum"> 297 </span> : ret = -1;
|
|
<span class="lineNum"> 298 </span> : /* LCOV_EXCL_STOP */
|
|
<span class="lineNum"> 299 </span> : }
|
|
<span class="lineNum"> 300 </span> : } else {
|
|
<span class="lineNum"> 301 </span><span class="lineCov"> 11 : errno = EOPNOTSUPP;</span>
|
|
<span class="lineNum"> 302 </span><span class="lineCov"> 11 : ret = -1;</span>
|
|
<span class="lineNum"> 303 </span> : }
|
|
<span class="lineNum"> 304 </span> :
|
|
<span class="lineNum"> 305 </span> : /*
|
|
<span class="lineNum"> 306 </span> : * Fallback to ftruncate() if the operation is not supported.
|
|
<span class="lineNum"> 307 </span> : *
|
|
<span class="lineNum"> 308 </span> : * We get EOPNOTSUPP if the operation is not supported, like in ext3/ext2
|
|
<span class="lineNum"> 309 </span> : * or ENOSYS with kernel before 2.6.23, because fallocate is not supported
|
|
<span class="lineNum"> 310 </span> : * at all.
|
|
<span class="lineNum"> 311 </span> : *
|
|
<span class="lineNum"> 312 </span> : * See: man fallocate
|
|
<span class="lineNum"> 313 </span> : * ENOSYS - This kernel does not implement fallocate().
|
|
<span class="lineNum"> 314 </span> : * EOPNOTSUPP - The file system containing the file referred to by fd does not support this operation
|
|
<span class="lineNum"> 315 </span> : */
|
|
<span class="lineNum"> 316 </span><span class="lineCov"> 581 : if (ret != 0 && (errno == EOPNOTSUPP || errno == ENOSYS)) {</span>
|
|
<span class="lineNum"> 317 </span> : /* fallback using ftruncate() */
|
|
<span class="lineNum"> 318 </span><span class="lineCov"> 11 : ret = ftruncate(split->f, size);</span>
|
|
<span class="lineNum"> 319 </span> : }
|
|
<span class="lineNum"> 320 </span> : #else
|
|
<span class="lineNum"> 321 </span> : (void)skip_fallocate; /* avoid the warning */
|
|
<span class="lineNum"> 322 </span> :
|
|
<span class="lineNum"> 323 </span> : /* allocate using a sparse file */
|
|
<span class="lineNum"> 324 </span> : ret = ftruncate(split->f, size);
|
|
<span class="lineNum"> 325 </span> : #endif
|
|
<span class="lineNum"> 326 </span> :
|
|
<span class="lineNum"> 327 </span><span class="lineCov"> 581 : return ret;</span>
|
|
<a name="328"><span class="lineNum"> 328 </span> : }</a>
|
|
<span class="lineNum"> 329 </span> :
|
|
<span class="lineNum"> 330 </span><span class="lineCov"> 214 : static int parity_handle_shrink(struct snapraid_split_handle* split, data_off_t size)</span>
|
|
<span class="lineNum"> 331 </span> : {
|
|
<span class="lineNum"> 332 </span><span class="lineCov"> 214 : return ftruncate(split->f, size);</span>
|
|
<span class="lineNum"> 333 </span> : }
|
|
<span class="lineNum"> 334 </span> :
|
|
<span class="lineNum"> 335 </span> : /**
|
|
<a name="336"><span class="lineNum"> 336 </span> : * Get the highest bit set.</a>
|
|
<span class="lineNum"> 337 </span> : */
|
|
<span class="lineNum"> 338 </span><span class="lineCov"> 719 : uint64_t hbit_u64(uint64_t v)</span>
|
|
<span class="lineNum"> 339 </span> : {
|
|
<span class="lineNum"> 340 </span> : unsigned ilog;
|
|
<span class="lineNum"> 341 </span> :
|
|
<span class="lineNum"> 342 </span><span class="lineCov"> 719 : ilog = 0;</span>
|
|
<span class="lineNum"> 343 </span><span class="lineCov"> 12411 : while ((v /= 2) != 0)</span>
|
|
<span class="lineNum"> 344 </span><span class="lineCov"> 10973 : ++ilog;</span>
|
|
<span class="lineNum"> 345 </span> :
|
|
<span class="lineNum"> 346 </span><span class="lineCov"> 719 : return 1ULL << ilog;</span>
|
|
<a name="347"><span class="lineNum"> 347 </span> : }</a>
|
|
<span class="lineNum"> 348 </span> :
|
|
<span class="lineNum"> 349 </span><span class="lineCov"> 132 : 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>
|
|
<span class="lineNum"> 350 </span> : {
|
|
<span class="lineNum"> 351 </span> : data_off_t base;
|
|
<span class="lineNum"> 352 </span> : data_off_t delta;
|
|
<span class="lineNum"> 353 </span> : data_off_t block_mask;
|
|
<span class="lineNum"> 354 </span> :
|
|
<span class="lineNum"> 355 </span> : #ifdef _WIN32
|
|
<span class="lineNum"> 356 </span> : /*
|
|
<span class="lineNum"> 357 </span> : * In Windows we want to avoid the annoying warning
|
|
<span class="lineNum"> 358 </span> : * message of disk full.
|
|
<span class="lineNum"> 359 </span> : *
|
|
<span class="lineNum"> 360 </span> : * To ensure to leave some space available, we first create
|
|
<span class="lineNum"> 361 </span> : * a spaceholder file >200 MB, to ensure to not fill completely
|
|
<span class="lineNum"> 362 </span> : * the disk.
|
|
<span class="lineNum"> 363 </span> : */
|
|
<span class="lineNum"> 364 </span> : char spaceholder_path[PATH_MAX];
|
|
<span class="lineNum"> 365 </span> :
|
|
<span class="lineNum"> 366 </span> : pathprint(spaceholder_path, sizeof(spaceholder_path), "%s%s", split->path, ".spaceholder");
|
|
<span class="lineNum"> 367 </span> :
|
|
<span class="lineNum"> 368 </span> : if (!skip_space_holder) {
|
|
<span class="lineNum"> 369 </span> : data_off_t spaceholder_size = 256 * 1024 * 1024;
|
|
<span class="lineNum"> 370 </span> : int spaceholder_f;
|
|
<span class="lineNum"> 371 </span> :
|
|
<span class="lineNum"> 372 </span> : spaceholder_f = open(spaceholder_path, O_RDWR | O_CREAT | O_TRUNC | O_BINARY, 0600);
|
|
<span class="lineNum"> 373 </span> : if (spaceholder_f == -1) {
|
|
<span class="lineNum"> 374 </span> : log_fatal("Failed to create space holder file '%s'.\n", spaceholder_path);
|
|
<span class="lineNum"> 375 </span> : return -1;
|
|
<span class="lineNum"> 376 </span> : }
|
|
<span class="lineNum"> 377 </span> :
|
|
<span class="lineNum"> 378 </span> : /* note that in Windows ftruncate is really allocating space */
|
|
<span class="lineNum"> 379 </span> : if (ftruncate(spaceholder_f, spaceholder_size) != 0) {
|
|
<span class="lineNum"> 380 </span> : log_fatal("WARNING Failed to resize the space holder file '%s' to %" PRIu64 " bytes.\n", spaceholder_path, spaceholder_size);
|
|
<span class="lineNum"> 381 </span> : log_fatal("Assuming that no more space is available.\n");
|
|
<span class="lineNum"> 382 </span> : close(spaceholder_f);
|
|
<span class="lineNum"> 383 </span> : remove(spaceholder_path);
|
|
<span class="lineNum"> 384 </span> : return 0;
|
|
<span class="lineNum"> 385 </span> : }
|
|
<span class="lineNum"> 386 </span> :
|
|
<span class="lineNum"> 387 </span> : if (fsync(spaceholder_f) != 0) {
|
|
<span class="lineNum"> 388 </span> : log_fatal("Failed to sync the space holder file '%s'.\n", spaceholder_path);
|
|
<span class="lineNum"> 389 </span> : close(spaceholder_f);
|
|
<span class="lineNum"> 390 </span> : remove(spaceholder_path);
|
|
<span class="lineNum"> 391 </span> : return -1;
|
|
<span class="lineNum"> 392 </span> : }
|
|
<span class="lineNum"> 393 </span> :
|
|
<span class="lineNum"> 394 </span> : if (close(spaceholder_f) != 0) {
|
|
<span class="lineNum"> 395 </span> : log_fatal("Failed to close the space holder file '%s'.\n", spaceholder_path);
|
|
<span class="lineNum"> 396 </span> : remove(spaceholder_path);
|
|
<span class="lineNum"> 397 </span> : return -1;
|
|
<span class="lineNum"> 398 </span> : }
|
|
<span class="lineNum"> 399 </span> : }
|
|
<span class="lineNum"> 400 </span> : #else
|
|
<span class="lineNum"> 401 </span> : (void)skip_space_holder;
|
|
<span class="lineNum"> 402 </span> : #endif
|
|
<span class="lineNum"> 403 </span> :
|
|
<span class="lineNum"> 404 </span> : /* mask of bits used by the block size */
|
|
<span class="lineNum"> 405 </span><span class="lineCov"> 132 : block_mask = ((data_off_t)block_size) - 1;</span>
|
|
<span class="lineNum"> 406 </span> :
|
|
<span class="lineNum"> 407 </span> : /* present size */
|
|
<span class="lineNum"> 408 </span><span class="lineCov"> 132 : base = split->st.st_size;</span>
|
|
<span class="lineNum"> 409 </span> :
|
|
<span class="lineNum"> 410 </span> : /* truncate it to block size multiplier */
|
|
<span class="lineNum"> 411 </span> : /* in case of damage the size may get wrong */
|
|
<span class="lineNum"> 412 </span><span class="lineCov"> 132 : base &= ~block_mask;</span>
|
|
<span class="lineNum"> 413 </span> :
|
|
<span class="lineNum"> 414 </span> : /* size we have to increase */
|
|
<span class="lineNum"> 415 </span><span class="lineCov"> 132 : delta = size - base;</span>
|
|
<span class="lineNum"> 416 </span> :
|
|
<span class="lineNum"> 417 </span> : /* grow the size one bit at time, like a kind of binary search */
|
|
<span class="lineNum"> 418 </span><span class="lineCov"> 983 : while (delta != 0) {</span>
|
|
<span class="lineNum"> 419 </span> : int ret;
|
|
<span class="lineNum"> 420 </span><span class="lineCov"> 719 : data_off_t run = hbit_u64(delta);</span>
|
|
<span class="lineNum"> 421 </span> :
|
|
<span class="lineNum"> 422 </span> : /* mask out the bit we process */
|
|
<span class="lineNum"> 423 </span><span class="lineCov"> 719 : delta &= ~run;</span>
|
|
<span class="lineNum"> 424 </span> :
|
|
<span class="lineNum"> 425 </span><span class="lineCov"> 719 : ret = parity_handle_grow(split, base + run, skip_fallocate);</span>
|
|
<span class="lineNum"> 426 </span><span class="lineCov"> 719 : if (ret != 0) {</span>
|
|
<span class="lineNum"> 427 </span> : /* we cannot grow, fallback enabling all the smaller bits */
|
|
<span class="lineNum"> 428 </span><span class="lineCov"> 138 : delta = run - 1;</span>
|
|
<span class="lineNum"> 429 </span> :
|
|
<span class="lineNum"> 430 </span> : /* mask out the block size */
|
|
<span class="lineNum"> 431 </span><span class="lineCov"> 138 : delta &= ~block_mask;</span>
|
|
<span class="lineNum"> 432 </span> : } else {
|
|
<span class="lineNum"> 433 </span> : /* increase the effective size */
|
|
<span class="lineNum"> 434 </span><span class="lineCov"> 581 : base += run;</span>
|
|
<span class="lineNum"> 435 </span> : }
|
|
<span class="lineNum"> 436 </span> : }
|
|
<span class="lineNum"> 437 </span> :
|
|
<span class="lineNum"> 438 </span> : /* ensure that the resulting size if block aligned */
|
|
<span class="lineNum"> 439 </span><span class="lineCov"> 132 : if ((base & block_mask) != 0) {</span>
|
|
<span class="lineNum"> 440 </span> : /* LCOV_EXCL_START */
|
|
<span class="lineNum"> 441 </span> : log_fatal("Internal inconsistency in requested parity size %" PRIu64 " with block %u\n", base, block_size);
|
|
<span class="lineNum"> 442 </span> : os_abort();
|
|
<span class="lineNum"> 443 </span> : /* LCOV_EXCL_STOP */
|
|
<span class="lineNum"> 444 </span> : }
|
|
<span class="lineNum"> 445 </span> :
|
|
<span class="lineNum"> 446 </span> : #ifdef _WIN32
|
|
<span class="lineNum"> 447 </span> : /* now delete the spaceholder file */
|
|
<span class="lineNum"> 448 </span> : if (remove(spaceholder_path) != 0) {
|
|
<span class="lineNum"> 449 </span> : log_fatal("WARNING Failed to remove the space holder file '%s'.\n", spaceholder_path);
|
|
<span class="lineNum"> 450 </span> : log_fatal("Continuing anyway.\n");
|
|
<span class="lineNum"> 451 </span> : }
|
|
<span class="lineNum"> 452 </span> : #endif
|
|
<span class="lineNum"> 453 </span> :
|
|
<span class="lineNum"> 454 </span> : /* shrink to the expected size to ensure to throw away any extra */
|
|
<span class="lineNum"> 455 </span> : /* data allocated when the grow operation fails */
|
|
<span class="lineNum"> 456 </span><span class="lineCov"> 132 : return parity_handle_shrink(split, base);</span>
|
|
<a name="457"><span class="lineNum"> 457 </span> : }</a>
|
|
<span class="lineNum"> 458 </span> :
|
|
<span class="lineNum"> 459 </span><span class="lineCov"> 2460 : 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>
|
|
<span class="lineNum"> 460 </span> : {
|
|
<span class="lineNum"> 461 </span> : int ret;
|
|
<span class="lineNum"> 462 </span> : int f_ret;
|
|
<span class="lineNum"> 463 </span> : int f_errno;
|
|
<span class="lineNum"> 464 </span> : int f_dir;
|
|
<span class="lineNum"> 465 </span> :
|
|
<span class="lineNum"> 466 </span><span class="lineCov"> 2460 : if (split->st.st_size < size) {</span>
|
|
<span class="lineNum"> 467 </span><span class="lineCov"> 132 : f_ret = parity_handle_fill(split, size, block_size, skip_fallocate, skip_space_holder);</span>
|
|
<span class="lineNum"> 468 </span><span class="lineCov"> 132 : f_errno = errno;</span>
|
|
<span class="lineNum"> 469 </span><span class="lineCov"> 132 : f_dir = 1;</span>
|
|
<span class="lineNum"> 470 </span><span class="lineCov"> 2328 : } else if (split->st.st_size > size) {</span>
|
|
<span class="lineNum"> 471 </span><span class="lineCov"> 82 : f_ret = parity_handle_shrink(split, size);</span>
|
|
<span class="lineNum"> 472 </span><span class="lineCov"> 82 : f_errno = errno;</span>
|
|
<span class="lineNum"> 473 </span><span class="lineCov"> 82 : f_dir = -1;</span>
|
|
<span class="lineNum"> 474 </span> : } else {
|
|
<span class="lineNum"> 475 </span><span class="lineCov"> 2246 : f_ret = 0;</span>
|
|
<span class="lineNum"> 476 </span><span class="lineCov"> 2246 : f_errno = 0;</span>
|
|
<span class="lineNum"> 477 </span><span class="lineCov"> 2246 : f_dir = 0;</span>
|
|
<span class="lineNum"> 478 </span> : }
|
|
<span class="lineNum"> 479 </span> :
|
|
<span class="lineNum"> 480 </span> : /* get the stat info */
|
|
<span class="lineNum"> 481 </span><span class="lineCov"> 2460 : ret = fstat(split->f, &split->st);</span>
|
|
<span class="lineNum"> 482 </span><span class="lineCov"> 2460 : if (ret != 0) {</span>
|
|
<span class="lineNum"> 483 </span> : /* LCOV_EXCL_START */
|
|
<span class="lineNum"> 484 </span> : log_fatal("Error accessing parity file '%s'. %s.\n", split->path, strerror(errno));
|
|
<span class="lineNum"> 485 </span> : return -1;
|
|
<span class="lineNum"> 486 </span> : /* LCOV_EXCL_STOP */
|
|
<span class="lineNum"> 487 </span> : }
|
|
<span class="lineNum"> 488 </span> :
|
|
<span class="lineNum"> 489 </span> : /* now check the error */
|
|
<span class="lineNum"> 490 </span><span class="lineCov"> 2460 : if (f_ret != 0) {</span>
|
|
<span class="lineNum"> 491 </span> : /* LCOV_EXCL_START */
|
|
<span class="lineNum"> 492 </span> : if (f_dir > 0) {
|
|
<span class="lineNum"> 493 </span> : if (f_errno == ENOSPC) {
|
|
<span class="lineNum"> 494 </span> : log_fatal("Failed to grow parity file '%s' to size %" PRIu64 " due lack of space.\n", split->path, size);
|
|
<span class="lineNum"> 495 </span> : } else {
|
|
<span class="lineNum"> 496 </span> : log_fatal("Error growing parity file '%s' to size %" PRIu64 ". Do you have enough space? %s.\n", split->path, size, strerror(f_errno));
|
|
<span class="lineNum"> 497 </span> : }
|
|
<span class="lineNum"> 498 </span> : } else {
|
|
<span class="lineNum"> 499 </span> : log_fatal("Error truncating parity file '%s' to size %" PRIu64 ". %s.\n", split->path, size, strerror(f_errno));
|
|
<span class="lineNum"> 500 </span> : }
|
|
<span class="lineNum"> 501 </span> : return -1;
|
|
<span class="lineNum"> 502 </span> : /* LCOV_EXCL_STOP */
|
|
<span class="lineNum"> 503 </span> : }
|
|
<span class="lineNum"> 504 </span> :
|
|
<span class="lineNum"> 505 </span><span class="lineCov"> 2460 : return 0;</span>
|
|
<a name="506"><span class="lineNum"> 506 </span> : }</a>
|
|
<span class="lineNum"> 507 </span> :
|
|
<span class="lineNum"> 508 </span><span class="lineCov"> 2460 : static int parity_split_is_fixed(struct snapraid_parity_handle* handle, unsigned s)</span>
|
|
<span class="lineNum"> 509 </span> : {
|
|
<span class="lineNum"> 510 </span> : /* next one */
|
|
<span class="lineNum"> 511 </span><span class="lineCov"> 2460 : ++s;</span>
|
|
<span class="lineNum"> 512 </span> :
|
|
<span class="lineNum"> 513 </span> : /* the latest one is always growing */
|
|
<span class="lineNum"> 514 </span><span class="lineCov"> 2460 : if (s >= handle->split_mac)</span>
|
|
<span class="lineNum"> 515 </span><span class="lineCov"> 615 : return 0;</span>
|
|
<span class="lineNum"> 516 </span> :
|
|
<span class="lineNum"> 517 </span> : /* if the next it's 0, this one is growing */
|
|
<span class="lineNum"> 518 </span><span class="lineCov"> 1845 : if (handle->split_map[s].size == 0)</span>
|
|
<span class="lineNum"> 519 </span><span class="lineCov"> 1234 : return 0;</span>
|
|
<span class="lineNum"> 520 </span> :
|
|
<span class="lineNum"> 521 </span><span class="lineCov"> 611 : return 1;</span>
|
|
<a name="522"><span class="lineNum"> 522 </span> : }</a>
|
|
<span class="lineNum"> 523 </span> :
|
|
<span class="lineNum"> 524 </span><span class="lineCov"> 615 : 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>
|
|
<span class="lineNum"> 525 </span> : {
|
|
<span class="lineNum"> 526 </span> : int ret;
|
|
<span class="lineNum"> 527 </span> : unsigned s;
|
|
<span class="lineNum"> 528 </span> : data_off_t block_mask;
|
|
<span class="lineNum"> 529 </span> :
|
|
<span class="lineNum"> 530 </span> : /* mask of bits used by the block size */
|
|
<span class="lineNum"> 531 </span><span class="lineCov"> 615 : block_mask = ((data_off_t)block_size) - 1;</span>
|
|
<span class="lineNum"> 532 </span> :
|
|
<span class="lineNum"> 533 </span><span class="lineCov"> 615 : if (size < 0) {</span>
|
|
<span class="lineNum"> 534 </span> : /* LCOV_EXCL_START */
|
|
<span class="lineNum"> 535 </span> : return -1;
|
|
<span class="lineNum"> 536 </span> : /* LCOV_EXCL_STOP */
|
|
<span class="lineNum"> 537 </span> : }
|
|
<span class="lineNum"> 538 </span> :
|
|
<span class="lineNum"> 539 </span><span class="lineCov"> 3075 : for (s = 0;s < handle->split_mac;++s) {</span>
|
|
<span class="lineNum"> 540 </span><span class="lineCov"> 2460 : struct snapraid_split_handle* split = &handle->split_map[s];</span>
|
|
<span class="lineNum"> 541 </span><span class="lineCov"> 2460 : int is_fixed = parity_split_is_fixed(handle, s);</span>
|
|
<span class="lineNum"> 542 </span> : data_off_t run;
|
|
<span class="lineNum"> 543 </span> :
|
|
<span class="lineNum"> 544 </span><span class="lineCov"> 2460 : if (is_fixed) {</span>
|
|
<span class="lineNum"> 545 </span> : /* if the required size is smaller, we have to reduce also the file */
|
|
<span class="lineNum"> 546 </span> : /* ignoring the previous size */
|
|
<span class="lineNum"> 547 </span><span class="lineCov"> 611 : if (size <= split->size) {</span>
|
|
<span class="lineNum"> 548 </span> : /* mark it as not fixed anymore for the later check */
|
|
<span class="lineNum"> 549 </span><span class="lineCov"> 10 : is_fixed = 0;</span>
|
|
<span class="lineNum"> 550 </span> :
|
|
<span class="lineNum"> 551 </span><span class="lineCov"> 10 : run = size; /* allocate only the needed size */</span>
|
|
<span class="lineNum"> 552 </span> : } else {
|
|
<span class="lineNum"> 553 </span> : /* if the size cannot be changed, use the fixed one */
|
|
<span class="lineNum"> 554 </span><span class="lineCov"> 601 : run = split->size;</span>
|
|
<span class="lineNum"> 555 </span> :
|
|
<span class="lineNum"> 556 </span><span class="lineCov"> 601 : if ((run & block_mask) != 0) {</span>
|
|
<span class="lineNum"> 557 </span> : /* LCOV_EXCL_START */
|
|
<span class="lineNum"> 558 </span> : log_fatal("Internal inconsistency in split '%s' size with extra '%" PRIu64 "' bytes.\n", split->path, run & block_mask);
|
|
<span class="lineNum"> 559 </span> : return -1;
|
|
<span class="lineNum"> 560 </span> : /* LCOV_EXCL_STOP */
|
|
<span class="lineNum"> 561 </span> : }
|
|
<span class="lineNum"> 562 </span> : }
|
|
<span class="lineNum"> 563 </span> : } else {
|
|
<span class="lineNum"> 564 </span> : /* otherwise tries to allocate all the needed remaining size */
|
|
<span class="lineNum"> 565 </span><span class="lineCov"> 1849 : run = size;</span>
|
|
<span class="lineNum"> 566 </span> : }
|
|
<span class="lineNum"> 567 </span> :
|
|
<span class="lineNum"> 568 </span><span class="lineCov"> 2460 : ret = parity_handle_chsize(split, run, block_size, skip_fallocate, skip_space_holder);</span>
|
|
<span class="lineNum"> 569 </span><span class="lineCov"> 2460 : if (ret != 0) {</span>
|
|
<span class="lineNum"> 570 </span> : /* LCOV_EXCL_START */
|
|
<span class="lineNum"> 571 </span> : return -1;
|
|
<span class="lineNum"> 572 </span> : /* LCOV_EXCL_STOP */
|
|
<span class="lineNum"> 573 </span> : }
|
|
<span class="lineNum"> 574 </span> :
|
|
<span class="lineNum"> 575 </span><span class="lineCov"> 2460 : if (split->st.st_size > run) {</span>
|
|
<span class="lineNum"> 576 </span> : /* LCOV_EXCL_START */
|
|
<span class="lineNum"> 577 </span> : log_fatal("Unexpected over resizing parity file '%s' to size %" PRIu64 " resulting in size %" PRIu64 ".\n", split->path, run, split->st.st_size);
|
|
<span class="lineNum"> 578 </span> : return -1;
|
|
<span class="lineNum"> 579 </span> : /* LCOV_EXCL_STOP */
|
|
<span class="lineNum"> 580 </span><span class="lineCov"> 2460 : } else if (is_fixed && split->st.st_size < run) {</span>
|
|
<span class="lineNum"> 581 </span> : /* LCOV_EXCL_START */
|
|
<span class="lineNum"> 582 </span> : log_fatal("Failed restoring parity file '%s' to size %" PRIu64 " resulting in size %" PRIu64 ".\n", split->path, run, split->st.st_size);
|
|
<span class="lineNum"> 583 </span> : return -1;
|
|
<span class="lineNum"> 584 </span> : /* LCOV_EXCL_STOP */
|
|
<span class="lineNum"> 585 </span> : } else {
|
|
<span class="lineNum"> 586 </span> : /* here it's possible to get less than the requested size */
|
|
<span class="lineNum"> 587 </span><span class="lineCov"> 2460 : run = split->st.st_size;</span>
|
|
<span class="lineNum"> 588 </span> :
|
|
<span class="lineNum"> 589 </span><span class="lineCov"> 2460 : if ((run & block_mask) != 0) {</span>
|
|
<span class="lineNum"> 590 </span> : /* LCOV_EXCL_START */
|
|
<span class="lineNum"> 591 </span> : log_fatal("Internal inconsistency in final parity size %" PRIu64 " with block size %u\n", run, block_size);
|
|
<span class="lineNum"> 592 </span> : os_abort();
|
|
<span class="lineNum"> 593 </span> : /* LCOV_EXCL_STOP */
|
|
<span class="lineNum"> 594 </span> : }
|
|
<span class="lineNum"> 595 </span> :
|
|
<span class="lineNum"> 596 </span> : /* store what we have allocated */
|
|
<span class="lineNum"> 597 </span><span class="lineCov"> 2460 : split->size = run;</span>
|
|
<span class="lineNum"> 598 </span> :
|
|
<span class="lineNum"> 599 </span> : /* decrease the remaining size */
|
|
<span class="lineNum"> 600 </span><span class="lineCov"> 2460 : size -= run;</span>
|
|
<span class="lineNum"> 601 </span> : }
|
|
<span class="lineNum"> 602 </span> : }
|
|
<span class="lineNum"> 603 </span> :
|
|
<span class="lineNum"> 604 </span> : /* if we cannot allocate all the space */
|
|
<span class="lineNum"> 605 </span><span class="lineCov"> 615 : if (size != 0) {</span>
|
|
<span class="lineNum"> 606 </span> : /* LCOV_EXCL_START */
|
|
<span class="lineNum"> 607 </span> : log_fatal("Failed to allocate all the required parity space. You miss %" PRIu64 " bytes.\n", size);
|
|
<span class="lineNum"> 608 </span> : return -1;
|
|
<span class="lineNum"> 609 </span> : /* LCOV_EXCL_STOP */
|
|
<span class="lineNum"> 610 </span> : }
|
|
<span class="lineNum"> 611 </span> :
|
|
<span class="lineNum"> 612 </span> : /* now copy the new size in the parity data */
|
|
<span class="lineNum"> 613 </span><span class="lineCov"> 615 : if (is_modified)</span>
|
|
<span class="lineNum"> 614 </span><span class="lineCov"> 481 : *is_modified = 0;</span>
|
|
<span class="lineNum"> 615 </span> :
|
|
<span class="lineNum"> 616 </span><span class="lineCov"> 3075 : for (s = 0;s < handle->split_mac;++s) {</span>
|
|
<span class="lineNum"> 617 </span><span class="lineCov"> 2460 : struct snapraid_split_handle* split = &handle->split_map[s];</span>
|
|
<span class="lineNum"> 618 </span> :
|
|
<span class="lineNum"> 619 </span><span class="lineCov"> 2460 : if (parity->split_map[s].size != split->size) {</span>
|
|
<span class="lineNum"> 620 </span><span class="lineCov"> 320 : parity->split_map[s].size = split->size;</span>
|
|
<span class="lineNum"> 621 </span><span class="lineCov"> 320 : if (is_modified)</span>
|
|
<span class="lineNum"> 622 </span><span class="lineCov"> 264 : *is_modified = 1;</span>
|
|
<span class="lineNum"> 623 </span> : }
|
|
<span class="lineNum"> 624 </span> : }
|
|
<span class="lineNum"> 625 </span> :
|
|
<span class="lineNum"> 626 </span><span class="lineCov"> 615 : return 0;</span>
|
|
<a name="627"><span class="lineNum"> 627 </span> : }</a>
|
|
<span class="lineNum"> 628 </span> :
|
|
<span class="lineNum"> 629 </span><span class="lineCov"> 402 : 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>
|
|
<span class="lineNum"> 630 </span> : {
|
|
<span class="lineNum"> 631 </span> : unsigned s;
|
|
<span class="lineNum"> 632 </span> : data_off_t block_mask;
|
|
<span class="lineNum"> 633 </span> :
|
|
<span class="lineNum"> 634 </span><span class="lineCov"> 402 : handle->level = level;</span>
|
|
<span class="lineNum"> 635 </span><span class="lineCov"> 402 : handle->split_mac = 0;</span>
|
|
<span class="lineNum"> 636 </span> :
|
|
<span class="lineNum"> 637 </span> : /* mask of bits used by the block size */
|
|
<span class="lineNum"> 638 </span><span class="lineCov"> 402 : block_mask = ((data_off_t)block_size) - 1;</span>
|
|
<span class="lineNum"> 639 </span> :
|
|
<span class="lineNum"> 640 </span><span class="lineCov"> 2006 : for (s = 0;s < parity->split_mac;++s) {</span>
|
|
<span class="lineNum"> 641 </span><span class="lineCov"> 1605 : struct snapraid_split_handle* split = &handle->split_map[s];</span>
|
|
<span class="lineNum"> 642 </span> : int ret;
|
|
<span class="lineNum"> 643 </span> : int flags;
|
|
<span class="lineNum"> 644 </span> :
|
|
<span class="lineNum"> 645 </span><span class="lineCov"> 1605 : advise_init(&split->advise, mode);</span>
|
|
<span class="lineNum"> 646 </span><span class="lineCov"> 1605 : pathcpy(split->path, sizeof(split->path), parity->split_map[s].path);</span>
|
|
<span class="lineNum"> 647 </span><span class="lineCov"> 1605 : split->size = parity->split_map[s].size;</span>
|
|
<span class="lineNum"> 648 </span><span class="lineCov"> 1605 : split->limit_size = PARITY_LIMIT(limit_size, s, level);</span>
|
|
<span class="lineNum"> 649 </span> :
|
|
<span class="lineNum"> 650 </span> : /* open for read */
|
|
<span class="lineNum"> 651 </span> : /* O_NOATIME: do not change access time */
|
|
<span class="lineNum"> 652 </span><span class="lineCov"> 1605 : flags = O_RDONLY | O_BINARY | advise_flags(&split->advise);</span>
|
|
<span class="lineNum"> 653 </span> :
|
|
<span class="lineNum"> 654 </span><span class="lineCov"> 1605 : split->f = open_noatime(split->path, flags);</span>
|
|
<span class="lineNum"> 655 </span><span class="lineCov"> 1605 : if (split->f == -1) {</span>
|
|
<span class="lineNum"> 656 </span> : /* LCOV_EXCL_START */
|
|
<span class="lineNum"> 657 </span> : log_fatal("Error opening parity file '%s'. %s.\n", split->path, strerror(errno));
|
|
<span class="lineNum"> 658 </span> : goto bail;
|
|
<span class="lineNum"> 659 </span> : /* LCOV_EXCL_STOP */
|
|
<span class="lineNum"> 660 </span> : }
|
|
<span class="lineNum"> 661 </span> :
|
|
<span class="lineNum"> 662 </span> : /* we have a valid file handle */
|
|
<span class="lineNum"> 663 </span><span class="lineCov"> 1604 : ++handle->split_mac;</span>
|
|
<span class="lineNum"> 664 </span> :
|
|
<span class="lineNum"> 665 </span> : /* get the stat info */
|
|
<span class="lineNum"> 666 </span><span class="lineCov"> 1604 : ret = fstat(split->f, &split->st);</span>
|
|
<span class="lineNum"> 667 </span><span class="lineCov"> 1604 : if (ret != 0) {</span>
|
|
<span class="lineNum"> 668 </span> : /* LCOV_EXCL_START */
|
|
<span class="lineNum"> 669 </span> : log_fatal("Error accessing parity file '%s'. %s.\n", split->path, strerror(errno));
|
|
<span class="lineNum"> 670 </span> : goto bail;
|
|
<span class="lineNum"> 671 </span> : /* LCOV_EXCL_STOP */
|
|
<span class="lineNum"> 672 </span> : }
|
|
<span class="lineNum"> 673 </span> :
|
|
<span class="lineNum"> 674 </span> : /**
|
|
<span class="lineNum"> 675 </span> : * If the parity size is not yet set, set it now.
|
|
<span class="lineNum"> 676 </span> : * This happens when expanding the number of parities,
|
|
<span class="lineNum"> 677 </span> : * or when upgrading from a content file that has not split->size data.
|
|
<span class="lineNum"> 678 </span> : */
|
|
<span class="lineNum"> 679 </span><span class="lineCov"> 1604 : if (split->size == PARITY_SIZE_INVALID) {</span>
|
|
<span class="lineNum"> 680 </span><span class="lineCov"> 40 : split->size = split->st.st_size;</span>
|
|
<span class="lineNum"> 681 </span> :
|
|
<span class="lineNum"> 682 </span> : /* ensure that the resulting size if block aligned */
|
|
<span class="lineNum"> 683 </span><span class="lineCov"> 40 : if ((split->size & block_mask) != 0) {</span>
|
|
<span class="lineNum"> 684 </span> : /* LCOV_EXCL_START */
|
|
<span class="lineNum"> 685 </span> : log_fatal("Error in preallocated size of parity file '%s' with size %" PRIu64 " and block %u .\n", split->path, split->size, block_size);
|
|
<span class="lineNum"> 686 </span> : goto bail;
|
|
<span class="lineNum"> 687 </span> : /* LCOV_EXCL_STOP */
|
|
<span class="lineNum"> 688 </span> : }
|
|
<span class="lineNum"> 689 </span> : }
|
|
<span class="lineNum"> 690 </span> :
|
|
<span class="lineNum"> 691 </span><span class="lineCov"> 1604 : ret = advise_open(&split->advise, split->f);</span>
|
|
<span class="lineNum"> 692 </span><span class="lineCov"> 1604 : if (ret != 0) {</span>
|
|
<span class="lineNum"> 693 </span> : /* LCOV_EXCL_START */
|
|
<span class="lineNum"> 694 </span> : log_fatal("Error advising parity file '%s'. %s.\n", split->path, strerror(errno));
|
|
<span class="lineNum"> 695 </span> : goto bail;
|
|
<span class="lineNum"> 696 </span> : /* LCOV_EXCL_STOP */
|
|
<span class="lineNum"> 697 </span> : }
|
|
<span class="lineNum"> 698 </span> : }
|
|
<span class="lineNum"> 699 </span> :
|
|
<span class="lineNum"> 700 </span><span class="lineCov"> 401 : return 0;</span>
|
|
<span class="lineNum"> 701 </span> :
|
|
<span class="lineNum"> 702 </span> : bail:
|
|
<span class="lineNum"> 703 </span> : /* LCOV_EXCL_START */
|
|
<span class="lineNum"> 704 </span> : for (s = 0;s < handle->split_mac;++s) {
|
|
<span class="lineNum"> 705 </span> : struct snapraid_split_handle* split = &handle->split_map[s];
|
|
<span class="lineNum"> 706 </span> : close(split->f);
|
|
<span class="lineNum"> 707 </span> : split->f = -1;
|
|
<span class="lineNum"> 708 </span> : }
|
|
<span class="lineNum"> 709 </span> : return -1;
|
|
<span class="lineNum"> 710 </span> : /* LCOV_EXCL_STOP */
|
|
<a name="711"><span class="lineNum"> 711 </span> : }</a>
|
|
<span class="lineNum"> 712 </span> :
|
|
<span class="lineNum"> 713 </span><span class="lineCov"> 469 : int parity_sync(struct snapraid_parity_handle* handle)</span>
|
|
<span class="lineNum"> 714 </span> : {
|
|
<span class="lineNum"> 715 </span> : #if HAVE_FSYNC
|
|
<span class="lineNum"> 716 </span> : unsigned s;
|
|
<span class="lineNum"> 717 </span> :
|
|
<span class="lineNum"> 718 </span><span class="lineCov"> 2345 : for (s = 0;s < handle->split_mac;++s) {</span>
|
|
<span class="lineNum"> 719 </span><span class="lineCov"> 1876 : struct snapraid_split_handle* split = &handle->split_map[s];</span>
|
|
<span class="lineNum"> 720 </span> : int ret;
|
|
<span class="lineNum"> 721 </span> :
|
|
<span class="lineNum"> 722 </span> : /* Ensure that data changes are written to disk. */
|
|
<span class="lineNum"> 723 </span> : /* This is required to ensure that parity is more updated than content */
|
|
<span class="lineNum"> 724 </span> : /* in case of a system crash. */
|
|
<span class="lineNum"> 725 </span><span class="lineCov"> 1876 : ret = fsync(split->f);</span>
|
|
<span class="lineNum"> 726 </span><span class="lineCov"> 1876 : if (ret != 0) {</span>
|
|
<span class="lineNum"> 727 </span> : /* LCOV_EXCL_START */
|
|
<span class="lineNum"> 728 </span> : log_fatal("Error synching parity file '%s'. %s.\n", split->path, strerror(errno));
|
|
<span class="lineNum"> 729 </span> : return -1;
|
|
<span class="lineNum"> 730 </span> : /* LCOV_EXCL_STOP */
|
|
<span class="lineNum"> 731 </span> : }
|
|
<span class="lineNum"> 732 </span> : }
|
|
<span class="lineNum"> 733 </span> : #endif
|
|
<span class="lineNum"> 734 </span> :
|
|
<span class="lineNum"> 735 </span><span class="lineCov"> 469 : return 0;</span>
|
|
<a name="736"><span class="lineNum"> 736 </span> : }</a>
|
|
<span class="lineNum"> 737 </span> :
|
|
<span class="lineNum"> 738 </span><span class="lineCov"> 1022 : int parity_close(struct snapraid_parity_handle* handle)</span>
|
|
<span class="lineNum"> 739 </span> : {
|
|
<span class="lineNum"> 740 </span> : unsigned s;
|
|
<span class="lineNum"> 741 </span><span class="lineCov"> 1022 : int f_ret = 0;</span>
|
|
<span class="lineNum"> 742 </span> :
|
|
<span class="lineNum"> 743 </span><span class="lineCov"> 5110 : for (s = 0;s < handle->split_mac;++s) {</span>
|
|
<span class="lineNum"> 744 </span><span class="lineCov"> 4088 : struct snapraid_split_handle* split = &handle->split_map[s];</span>
|
|
<span class="lineNum"> 745 </span> : int ret;
|
|
<span class="lineNum"> 746 </span> :
|
|
<span class="lineNum"> 747 </span><span class="lineCov"> 4088 : ret = close(split->f);</span>
|
|
<span class="lineNum"> 748 </span><span class="lineCov"> 4088 : if (ret != 0) {</span>
|
|
<span class="lineNum"> 749 </span> : /* LCOV_EXCL_START */
|
|
<span class="lineNum"> 750 </span> : /* This is a serious error, as it may be the result of a failed write */
|
|
<span class="lineNum"> 751 </span> : /* identified at later time. */
|
|
<span class="lineNum"> 752 </span> : /* In a normal file-system (not NFS) it should never happen */
|
|
<span class="lineNum"> 753 </span> : log_fatal("Error closing parity file '%s'. %s.\n", split->path, strerror(errno));
|
|
<span class="lineNum"> 754 </span> : f_ret = -1;
|
|
<span class="lineNum"> 755 </span> : /* LCOV_EXCL_STOP */
|
|
<span class="lineNum"> 756 </span> :
|
|
<span class="lineNum"> 757 </span> : /* continue to close the others */
|
|
<span class="lineNum"> 758 </span> : }
|
|
<span class="lineNum"> 759 </span> :
|
|
<span class="lineNum"> 760 </span> : /* reset the descriptor */
|
|
<span class="lineNum"> 761 </span><span class="lineCov"> 4088 : split->f = -1;</span>
|
|
<span class="lineNum"> 762 </span> : }
|
|
<span class="lineNum"> 763 </span> :
|
|
<span class="lineNum"> 764 </span><span class="lineCov"> 1022 : return f_ret;</span>
|
|
<a name="765"><span class="lineNum"> 765 </span> : }</a>
|
|
<span class="lineNum"> 766 </span> :
|
|
<span class="lineNum"> 767 </span><span class="lineCov"> 4113807 : struct snapraid_split_handle* parity_split_find(struct snapraid_parity_handle* handle, data_off_t* offset)</span>
|
|
<span class="lineNum"> 768 </span> : {
|
|
<span class="lineNum"> 769 </span> : unsigned s;
|
|
<span class="lineNum"> 770 </span> :
|
|
<span class="lineNum"> 771 </span><span class="lineCov"> 4113807 : if (*offset < 0)</span>
|
|
<span class="lineNum"> 772 </span><span class="lineNoCov"> 0 : return 0;</span>
|
|
<span class="lineNum"> 773 </span> :
|
|
<span class="lineNum"> 774 </span><span class="lineCov"> 6502165 : for (s = 0;s < handle->split_mac;++s) {</span>
|
|
<span class="lineNum"> 775 </span><span class="lineCov"> 6490805 : struct snapraid_split_handle* split = &handle->split_map[s];</span>
|
|
<span class="lineNum"> 776 </span> :
|
|
<span class="lineNum"> 777 </span><span class="lineCov"> 6490805 : if (*offset < split->size)</span>
|
|
<span class="lineNum"> 778 </span><span class="lineCov"> 4102447 : return split;</span>
|
|
<span class="lineNum"> 779 </span> :
|
|
<span class="lineNum"> 780 </span><span class="lineCov"> 2388358 : *offset -= split->size;</span>
|
|
<span class="lineNum"> 781 </span> : }
|
|
<span class="lineNum"> 782 </span> :
|
|
<span class="lineNum"> 783 </span><span class="lineCov"> 11360 : return 0;</span>
|
|
<a name="784"><span class="lineNum"> 784 </span> : }</a>
|
|
<span class="lineNum"> 785 </span> :
|
|
<span class="lineNum"> 786 </span><span class="lineCov"> 611983 : int parity_write(struct snapraid_parity_handle* handle, block_off_t pos, unsigned char* block_buffer, unsigned block_size)</span>
|
|
<span class="lineNum"> 787 </span> : {
|
|
<span class="lineNum"> 788 </span> : ssize_t write_ret;
|
|
<span class="lineNum"> 789 </span> : data_off_t offset;
|
|
<span class="lineNum"> 790 </span> : struct snapraid_split_handle* split;
|
|
<span class="lineNum"> 791 </span> : int ret;
|
|
<span class="lineNum"> 792 </span> :
|
|
<span class="lineNum"> 793 </span><span class="lineCov"> 611983 : offset = pos * (data_off_t)block_size;</span>
|
|
<span class="lineNum"> 794 </span> :
|
|
<span class="lineNum"> 795 </span><span class="lineCov"> 611983 : split = parity_split_find(handle, &offset);</span>
|
|
<span class="lineNum"> 796 </span><span class="lineCov"> 611984 : if (!split) {</span>
|
|
<span class="lineNum"> 797 </span> : /* LCOV_EXCL_START */
|
|
<span class="lineNum"> 798 </span> : log_fatal("Writing parity data outside range at extra offset %" PRIu64 ".\n", offset);
|
|
<span class="lineNum"> 799 </span> : return -1;
|
|
<span class="lineNum"> 800 </span> : /* LCOV_EXCL_STOP */
|
|
<span class="lineNum"> 801 </span> : }
|
|
<span class="lineNum"> 802 </span> :
|
|
<span class="lineNum"> 803 </span><span class="lineCov"> 611984 : write_ret = pwrite(split->f, block_buffer, block_size, offset);</span>
|
|
<span class="lineNum"> 804 </span><span class="lineCov"> 611983 : if (write_ret != (ssize_t)block_size) { /* conversion is safe because block_size is always small */</span>
|
|
<span class="lineNum"> 805 </span> : /* LCOV_EXCL_START */
|
|
<span class="lineNum"> 806 </span> : if (errno == ENOSPC) {
|
|
<span class="lineNum"> 807 </span> : log_fatal("Failed to grow parity file '%s' using write due lack of space.\n", split->path);
|
|
<span class="lineNum"> 808 </span> : } else {
|
|
<span class="lineNum"> 809 </span> : log_fatal("Error writing file '%s'. %s.\n", split->path, strerror(errno));
|
|
<span class="lineNum"> 810 </span> : }
|
|
<span class="lineNum"> 811 </span> : return -1;
|
|
<span class="lineNum"> 812 </span> : /* LCOV_EXCL_STOP */
|
|
<span class="lineNum"> 813 </span> : }
|
|
<span class="lineNum"> 814 </span> :
|
|
<span class="lineNum"> 815 </span><span class="lineCov"> 611983 : ret = advise_write(&split->advise, split->f, offset, block_size);</span>
|
|
<span class="lineNum"> 816 </span><span class="lineCov"> 611981 : if (ret != 0) {</span>
|
|
<span class="lineNum"> 817 </span> : /* LCOV_EXCL_START */
|
|
<span class="lineNum"> 818 </span> : log_fatal("Error advising parity file '%s'. %s.\n", split->path, strerror(errno));
|
|
<span class="lineNum"> 819 </span> : return -1;
|
|
<span class="lineNum"> 820 </span> : /* LCOV_EXCL_STOP */
|
|
<span class="lineNum"> 821 </span> : }
|
|
<span class="lineNum"> 822 </span> :
|
|
<span class="lineNum"> 823 </span><span class="lineCov"> 611981 : return 0;</span>
|
|
<a name="824"><span class="lineNum"> 824 </span> : }</a>
|
|
<span class="lineNum"> 825 </span> :
|
|
<span class="lineNum"> 826 </span><span class="lineCov"> 3501819 : int parity_read(struct snapraid_parity_handle* handle, block_off_t pos, unsigned char* block_buffer, unsigned block_size, fptr* out)</span>
|
|
<span class="lineNum"> 827 </span> : {
|
|
<span class="lineNum"> 828 </span> : ssize_t read_ret;
|
|
<span class="lineNum"> 829 </span> : data_off_t offset;
|
|
<span class="lineNum"> 830 </span> : unsigned count;
|
|
<span class="lineNum"> 831 </span> : struct snapraid_split_handle* split;
|
|
<span class="lineNum"> 832 </span> : int ret;
|
|
<span class="lineNum"> 833 </span> :
|
|
<span class="lineNum"> 834 </span><span class="lineCov"> 3501819 : offset = pos * (data_off_t)block_size;</span>
|
|
<span class="lineNum"> 835 </span> :
|
|
<span class="lineNum"> 836 </span><span class="lineCov"> 3501819 : split = parity_split_find(handle, &offset);</span>
|
|
<span class="lineNum"> 837 </span><span class="lineCov"> 3501808 : if (!split) {</span>
|
|
<span class="lineNum"> 838 </span> : /* LCOV_EXCL_START */
|
|
<span class="lineNum"> 839 </span> : out("Reading parity data outside range at extra offset %" PRIu64 ".\n", offset);
|
|
<span class="lineNum"> 840 </span> : return -1;
|
|
<span class="lineNum"> 841 </span> : /* LCOV_EXCL_STOP */
|
|
<span class="lineNum"> 842 </span> : }
|
|
<span class="lineNum"> 843 </span> :
|
|
<span class="lineNum"> 844 </span><span class="lineCov"> 3490448 : count = 0;</span>
|
|
<span class="lineNum"> 845 </span> : do {
|
|
<span class="lineNum"> 846 </span><span class="lineCov"> 3490446 : read_ret = pread(split->f, block_buffer + count, block_size - count, offset + count);</span>
|
|
<span class="lineNum"> 847 </span><span class="lineCov"> 3490413 : if (read_ret < 0) {</span>
|
|
<span class="lineNum"> 848 </span> : /* LCOV_EXCL_START */
|
|
<span class="lineNum"> 849 </span> : out("Error reading file '%s' at offset %" PRIu64 " for size %u. %s.\n", split->path, offset + count, block_size - count, strerror(errno));
|
|
<span class="lineNum"> 850 </span> : return -1;
|
|
<span class="lineNum"> 851 </span> : /* LCOV_EXCL_STOP */
|
|
<span class="lineNum"> 852 </span> : }
|
|
<span class="lineNum"> 853 </span><span class="lineCov"> 3490413 : if (read_ret == 0) {</span>
|
|
<span class="lineNum"> 854 </span> : /* LCOV_EXCL_START */
|
|
<span class="lineNum"> 855 </span> : out("Unexpected end of file '%s' at offset %" PRIu64 ". %s.\n", split->path, offset, strerror(errno));
|
|
<span class="lineNum"> 856 </span> : return -1;
|
|
<span class="lineNum"> 857 </span> : /* LCOV_EXCL_STOP */
|
|
<span class="lineNum"> 858 </span> : }
|
|
<span class="lineNum"> 859 </span> :
|
|
<span class="lineNum"> 860 </span><span class="lineCov"> 3490413 : count += read_ret;</span>
|
|
<span class="lineNum"> 861 </span><span class="lineCov"> 3490413 : } while (count < block_size);</span>
|
|
<span class="lineNum"> 862 </span> :
|
|
<span class="lineNum"> 863 </span><span class="lineCov"> 3490415 : ret = advise_read(&split->advise, split->f, offset, block_size);</span>
|
|
<span class="lineNum"> 864 </span><span class="lineCov"> 3490417 : if (ret != 0) {</span>
|
|
<span class="lineNum"> 865 </span> : /* LCOV_EXCL_START */
|
|
<span class="lineNum"> 866 </span> : out("Error advising parity file '%s'. %s.\n", split->path, strerror(errno));
|
|
<span class="lineNum"> 867 </span> : return -1;
|
|
<span class="lineNum"> 868 </span> : /* LCOV_EXCL_STOP */
|
|
<span class="lineNum"> 869 </span> : }
|
|
<span class="lineNum"> 870 </span> :
|
|
<span class="lineNum"> 871 </span><span class="lineCov"> 3490417 : return block_size;</span>
|
|
<span class="lineNum"> 872 </span> : }
|
|
<span class="lineNum"> 873 </span> :
|
|
</pre>
|
|
</td>
|
|
</tr>
|
|
</table>
|
|
<br>
|
|
|
|
<table width="100%" border=0 cellspacing=0 cellpadding=0>
|
|
<tr><td class="ruler"><img src="../glass.png" width=3 height=3 alt=""></td></tr>
|
|
<tr><td class="versionInfo">Generated by: <a href="http://ltp.sourceforge.net/coverage/lcov.php" target="_parent">LCOV version 1.10</a></td></tr>
|
|
</table>
|
|
<br>
|
|
|
|
</body>
|
|
</html>
|