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<div id="projectname">libaaruformat<span id="projectnumber"> 1.0</span>
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<div id="projectbrief">Aaru Data Preservation Suite - Format Library</div>
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<div class="header">
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<div class="headertitle"><div class="title">dump.h File Reference</div></div>
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<div class="contents">
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<p>Packed on-disk structures describing hardware and software used during image acquisition.
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<a href="#details">More...</a></p>
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<div class="textblock"><code>#include <stdint.h></code><br />
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</div>
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<p><a href="dump_8h_source.html">Go to the source code of this file.</a></p>
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<table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 id="header-nested-classes" class="groupheader"><a id="nested-classes" name="nested-classes"></a>
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Data Structures</h2></td></tr>
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<tr class="memitem:DumpHardwareHeader" id="r_DumpHardwareHeader"><td class="memItemLeft" align="right" valign="top">struct  </td><td class="memItemRight" valign="bottom"><a class="el" href="structDumpHardwareHeader.html">DumpHardwareHeader</a></td></tr>
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<tr class="memdesc:"><td class="mdescLeft"> </td><td class="mdescRight">Header that precedes a sequence of dump hardware entries and their variable-length payload. <a href="structDumpHardwareHeader.html#details">More...</a><br /></td></tr>
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<tr class="memitem:DumpHardwareEntry" id="r_DumpHardwareEntry"><td class="memItemLeft" align="right" valign="top">struct  </td><td class="memItemRight" valign="bottom"><a class="el" href="structDumpHardwareEntry.html">DumpHardwareEntry</a></td></tr>
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<tr class="memdesc:"><td class="mdescLeft"> </td><td class="mdescRight">Per-environment length table describing subsequent UTF-8 strings and optional extent array. <a href="structDumpHardwareEntry.html#details">More...</a><br /></td></tr>
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</table><table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 id="header-typedef-members" class="groupheader"><a id="typedef-members" name="typedef-members"></a>
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Typedefs</h2></td></tr>
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<tr class="memitem:aa981a0ca569affe1e54ca0e382adb1cd" id="r_aa981a0ca569affe1e54ca0e382adb1cd"><td class="memItemLeft" align="right" valign="top">typedef struct DumpHardwareHeader </td><td class="memItemRight" valign="bottom"><a class="el" href="#aa981a0ca569affe1e54ca0e382adb1cd">DumpHardwareHeader</a></td></tr>
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<tr class="memitem:afd61d0986223157fbb7355586be9dcf1" id="r_afd61d0986223157fbb7355586be9dcf1"><td class="memItemLeft" align="right" valign="top">typedef struct DumpHardwareEntry </td><td class="memItemRight" valign="bottom"><a class="el" href="#afd61d0986223157fbb7355586be9dcf1">DumpHardwareEntry</a></td></tr>
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</table>
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<a name="details" id="details"></a><h2 id="header-details" class="groupheader">Detailed Description</h2>
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<div class="textblock"><p>Packed on-disk structures describing hardware and software used during image acquisition. </p>
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<p>A Dump Hardware block (identifier = BlockType::DumpHardwareBlock) records one or more dump "environments" – typically combinations of a physical device (drive, controller, adapter) and the software stack that performed the read operation. Each environment is represented by a <a class="el" href="structDumpHardwareEntry.html">DumpHardwareEntry</a> followed by a sequence of UTF‑8 strings and an optional array of extent ranges (<a class="el" href="structDumpExtent.html">DumpExtent</a>, defined in <a class="el" href="context_8h.html" title="Central runtime context structures for libaaruformat (image state, caches, checksum buffers).">context.h</a>) that delimit portions of the medium this environment contributed to.</p>
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<p>Binary layout (little-endian, packed, all multi-byte integers LE):</p>
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<p><a class="el" href="structDumpHardwareHeader.html" title="Header that precedes a sequence of dump hardware entries and their variable-length payload.">DumpHardwareHeader</a> (sizeof = 16 bytes) identifier (4) -> BlockType::DumpHardwareBlock entries (2) -> number of following hardware entries length (4) -> total bytes of payload that follow this header crc64 (8) -> CRC64-ECMA of the payload bytes</p>
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<p>Repeated for i in [0, entries): <a class="el" href="structDumpHardwareEntry.html" title="Per-environment length table describing subsequent UTF-8 strings and optional extent array.">DumpHardwareEntry</a> (36 bytes) manufacturerLength (4) modelLength (4) revisionLength (4) firmwareLength (4) serialLength (4) softwareNameLength (4) softwareVersionLength (4) softwareOperatingSystemLength (4) extents (4) -> number of <a class="el" href="structDumpExtent.html" title="Inclusive [start,end] logical sector range contributed by a single hardware environment.">DumpExtent</a> structs after the strings</p>
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<p>Variable-length UTF-8 strings (not NUL-terminated on disk) appear immediately after the entry, in the exact order of the length fields above; each string is present only if its length > 0. The reader allocates an extra byte to append '\0' for in-memory convenience.</p>
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<p>Array of 'extents' <a class="el" href="structDumpExtent.html" title="Inclusive [start,end] logical sector range contributed by a single hardware environment.">DumpExtent</a> structures (each 16 bytes: start, end) follows the strings if extents > 0. The semantic of each extent is an inclusive [start, end] logical sector (or unit) range contributed by this hardware/software combination.</p>
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<p>CRC semantics:</p><ul>
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<li>crc64 covers exactly 'length' bytes immediately following the header.</li>
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<li>For legacy images with header.imageMajorVersion <= AARUF_VERSION_V1 the original C# writer produced a byte-swapped CRC; the library compensates internally (see <a class="el" href="internal_8h.html#a0e2cfc858c0551bc9bef11d5bdb85aac" title="Processes a dump hardware block from the image stream.">process_dumphw_block()</a>).</li>
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</ul>
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<p>Invariants / validation recommendations:</p><ul>
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<li>identifier == BlockType::DumpHardwareBlock</li>
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<li>Accumulated size of all (entry + strings + extents arrays) == length</li>
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<li>All length fields are trusted only after bounds checking against remaining payload bytes</li>
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<li>Strings are raw UTF-8 data with no implicit terminator</li>
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<li>extents * sizeof(DumpExtent) fits inside remaining payload</li>
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</ul>
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<p>Memory management notes (runtime library):</p><ul>
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<li>Each string is malloc'ed with +1 byte for terminator during processing.</li>
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<li>Extents array is malloc'ed per entry when extents > 0.</li>
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<li>See aaruformatContext::dumpHardwareEntriesWithData for owning pointers.</li>
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</ul>
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<dl class="section warning"><dt>Warning</dt><dd>Structures are packed; never rely on natural alignment when mapping from a byte buffer. </dd></dl>
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<dl class="section see"><dt>See also</dt><dd><a class="el" href="structDumpHardwareHeader.html" title="Header that precedes a sequence of dump hardware entries and their variable-length payload.">DumpHardwareHeader</a> </dd>
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<dd>
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<a class="el" href="structDumpHardwareEntry.html" title="Per-environment length table describing subsequent UTF-8 strings and optional extent array.">DumpHardwareEntry</a> </dd>
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<dd>
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<a class="el" href="structDumpExtent.html" title="Inclusive [start,end] logical sector range contributed by a single hardware environment.">DumpExtent</a> (in <a class="el" href="context_8h.html" title="Central runtime context structures for libaaruformat (image state, caches, checksum buffers).">context.h</a>) </dd>
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<dd>
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<a class="el" href="enums_8h.html#a54420623f26ab6bb61042b41cccf37a3" title="List of known block types contained in an Aaru image.">BlockType</a> </dd></dl>
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<p class="definition">Definition in file <a class="el" href="dump_8h_source.html">dump.h</a>.</p>
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</div><a name="doc-typedef-members" id="doc-typedef-members"></a><h2 id="header-doc-typedef-members" class="groupheader">Typedef Documentation</h2>
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<a id="afd61d0986223157fbb7355586be9dcf1" name="afd61d0986223157fbb7355586be9dcf1"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#afd61d0986223157fbb7355586be9dcf1">◆ </a></span>DumpHardwareEntry</h2>
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<td class="memname">typedef struct DumpHardwareEntry DumpHardwareEntry</td>
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<h2 class="memtitle"><span class="permalink"><a href="#aa981a0ca569affe1e54ca0e382adb1cd">◆ </a></span>DumpHardwareHeader</h2>
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<td class="memname">typedef struct DumpHardwareHeader DumpHardwareHeader</td>
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<li class="navelem"><a href="dir_d44c64559bbebec7f509842c48db8b23.html">include</a></li><li class="navelem"><a href="dir_aeff2545c9dfcfc842fe9d84b123cb31.html">aaruformat</a></li><li class="navelem"><a href="dir_6387aeb6e475a334d8dc12d69f21999e.html">structs</a></li><li class="navelem"><a href="dump_8h.html">dump.h</a></li>
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<li class="footer">Generated by <a href="https://www.doxygen.org/index.html"><img class="footer" src="doxygen.svg" width="104" height="31" alt="doxygen"/></a> 1.14.0 </li>
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