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Mario Stöckl
2025-12-07 16:02:57 +01:00
parent 2261f735d7
commit 4ec936af3c
2 changed files with 261 additions and 1 deletions
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webroot/js/filesystems/ext.js Normal file
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// EXT filesystem implementation (ext2/ext3/ext4)
import { BaseFilesystem } from './base.js';
import { checkDependencies, updateResultItem } from '../utils.js';
export class EXTFilesystem extends BaseFilesystem {
constructor() {
super('EXT', [
{
id: 'ext',
name: 'EXT (ext2/ext3/ext4)',
constants: [
{ id: 'partitionStartEXT', label: 'Partitionsstart (Basis-Offset)', unit: 'Bytes', default: '0x0' },
{ id: 'superblockOffsetEXT', label: 'Superblock-Offset (relativ zur Partition)', unit: 'Bytes', default: '0x400' }
],
inputs: [
{ id: 'blockSizeExpEXT', label: 'Block-Größe Exponent (Offset 0x418)', unit: 'Exponent n', placeholder: '0x0' },
{ id: 'blocksPerGroupEXT', label: 'Blöcke pro Blockgruppe (Offset 0x420)', unit: 'Anzahl', placeholder: '0x8000' },
{ id: 'inodesPerGroupEXT', label: 'Inodes pro Blockgruppe (Offset 0x428)', unit: 'Anzahl', placeholder: '0x2000' },
{ id: 'inodeSizeEXT', label: 'Inode-Größe (Offset 0x458)', unit: 'Bytes', placeholder: '0x100' },
{ id: 'totalBlocksEXT', label: 'Gesamtanzahl Blöcke (Offset 0x404)', unit: 'Anzahl', placeholder: '0x40000' },
{ id: 'groupDescSizeEXT', label: 'Größe Gruppendeskriptor (Offset 0x4FE)', unit: 'Bytes', placeholder: '0x20' },
{ id: 'inodeTableBlockGroupEXT', label: 'Inode-Tabelle Block (aus GDT, Offset 0x08)', unit: 'Block-Nummer', placeholder: '0x21' },
{ id: 'targetInodeEXT', label: 'Gesuchter Inode', unit: 'Nummer', placeholder: '0x02' },
{ id: 'targetBlockEXT', label: 'Gesuchter Block', unit: 'Nummer', placeholder: '0x100' },
{ id: 'blockgroupNumberEXT', label: 'Blockgruppen-Nummer', unit: 'Nummer', placeholder: '0x0' }
],
resultGroups: [
{
name: 'Basis-Berechnungen',
results: [
{ id: 'superblockPosEXT', label: 'Superblock Position', dependencies: ['partitionStartEXT', 'superblockOffsetEXT'], formula: 'Partitionsstart + 0x400' },
{ id: 'blockSizeBytesEXT', label: 'Block-Größe (Bytes)', dependencies: ['blockSizeExpEXT'], formula: '2^(10+n) Bytes' },
{ id: 'totalBlockgroupsEXT', label: 'Anzahl Blockgruppen', dependencies: ['totalBlocksEXT', 'blocksPerGroupEXT'], formula: 'Aufrunden(Gesamtblöcke ÷ Blöcke pro Gruppe)' }
]
},
{
name: 'Gruppendeskriptor-Tabelle',
results: [
{ id: 'gdtStartEXT', label: 'GDT Start', dependencies: ['partitionStartEXT', 'superblockOffsetEXT', 'blockSizeExpEXT'], formula: 'Partitionsstart + Block nach Superblock' },
{ id: 'gdtBlockgroupOffsetEXT', label: 'GDT-Eintrag für Blockgruppe', dependencies: ['partitionStartEXT', 'superblockOffsetEXT', 'blockSizeExpEXT', 'blockgroupNumberEXT', 'groupDescSizeEXT'], formula: 'GDT Start + (Blockgruppe × GD-Größe)' }
]
},
{
name: 'Inode-Berechnungen',
results: [
{ id: 'inodeBlockgroupEXT', label: 'Blockgruppe des Inodes', dependencies: ['targetInodeEXT', 'inodesPerGroupEXT'], formula: 'Abrunden((Inode - 1) ÷ Inodes pro Gruppe)' },
{ id: 'inodeRelativeIndexEXT', label: 'Relativer Index in Blockgruppe', dependencies: ['targetInodeEXT', 'inodesPerGroupEXT'], formula: '(Inode - 1) % Inodes pro Gruppe' },
{ id: 'inodeTableStartEXT', label: 'Inode-Tabelle Start', dependencies: ['partitionStartEXT', 'inodeTableBlockGroupEXT', 'blockSizeExpEXT'], formula: 'Partitionsstart + (Block × Block-Größe)' },
{ id: 'inodeOffsetEXT', label: 'Inode Offset', dependencies: ['partitionStartEXT', 'inodeTableBlockGroupEXT', 'blockSizeExpEXT', 'targetInodeEXT', 'inodesPerGroupEXT', 'inodeSizeEXT'], formula: 'Inode-Tabelle Start + (Relativer Index × Inode-Größe)' }
]
},
{
name: 'Block-Berechnungen',
results: [
{ id: 'blockOffsetEXT', label: 'Block Offset', dependencies: ['partitionStartEXT', 'targetBlockEXT', 'blockSizeExpEXT'], formula: 'Partitionsstart + (Block-Nummer × Block-Größe)' }
]
},
{
name: 'Reservierte Inodes (Systemdateien)',
results: [
{ id: 'badBlocksInodeEXT', label: 'Inode 1 - Beschädigte Blöcke', dependencies: ['partitionStartEXT', 'inodeTableBlockGroupEXT', 'blockSizeExpEXT', 'inodeSizeEXT'], formula: 'Inode-Tabelle Start + (0 × Inode-Größe)' },
{ id: 'rootDirInodeEXT', label: 'Inode 2 - Wurzelverzeichnis', dependencies: ['partitionStartEXT', 'inodeTableBlockGroupEXT', 'blockSizeExpEXT', 'inodeSizeEXT'], formula: 'Inode-Tabelle Start + (1 × Inode-Größe)' },
{ id: 'userQuotaInodeEXT', label: 'Inode 3 - Benutzer-Quotas', dependencies: ['partitionStartEXT', 'inodeTableBlockGroupEXT', 'blockSizeExpEXT', 'inodeSizeEXT'], formula: 'Inode-Tabelle Start + (2 × Inode-Größe)' },
{ id: 'groupQuotaInodeEXT', label: 'Inode 4 - Gruppen-Quotas', dependencies: ['partitionStartEXT', 'inodeTableBlockGroupEXT', 'blockSizeExpEXT', 'inodeSizeEXT'], formula: 'Inode-Tabelle Start + (3 × Inode-Größe)' },
{ id: 'bootloaderInodeEXT', label: 'Inode 5 - Bootloader', dependencies: ['partitionStartEXT', 'inodeTableBlockGroupEXT', 'blockSizeExpEXT', 'inodeSizeEXT'], formula: 'Inode-Tabelle Start + (4 × Inode-Größe)' },
{ id: 'journalInodeEXT', label: 'Inode 8 - Journal (ext3/ext4)', dependencies: ['partitionStartEXT', 'inodeTableBlockGroupEXT', 'blockSizeExpEXT', 'inodeSizeEXT'], formula: 'Inode-Tabelle Start + (7 × Inode-Größe)' }
]
},
{
name: 'Inode-Tabellen-Übersicht',
results: [
{ id: 'inodeTableSizeEXT', label: 'Inode-Tabelle Größe (Bytes)', dependencies: ['inodesPerGroupEXT', 'inodeSizeEXT'], formula: 'Inodes pro Gruppe × Inode-Größe' },
{ id: 'inodeTableSizeBlocksEXT', label: 'Inode-Tabelle Größe (Blöcke)', dependencies: ['inodesPerGroupEXT', 'inodeSizeEXT', 'blockSizeExpEXT'], formula: 'Aufrunden(Tabellengröße ÷ Block-Größe)' }
]
}
],
formulas: [
{ name: 'Superblock Position', expression: 'Partitionsstart + 0x400 (immer fix bei Offset 0x400)' },
{ name: 'Block-Größe', expression: '2^(10+n) Bytes, wobei n der Exponent aus Offset 0x418 ist (0 = 1024, 1 = 2048, 2 = 4096, etc.)' },
{ name: 'Anzahl Blockgruppen', expression: 'Aufrunden(Gesamtanzahl Blöcke ÷ Blöcke pro Blockgruppe)' },
{ name: 'GDT Start', expression: 'Partitionsstart + (Block nach Superblock × Block-Größe)' },
{ name: 'GDT-Eintrag Offset', expression: 'GDT Start + (Blockgruppen-Nummer × Gruppendeskriptor-Größe)' },
{ name: 'Blockgruppe des Inodes', expression: 'Abrunden((Inode-Nummer - 1) ÷ Inodes pro Blockgruppe)' },
{ name: 'Relativer Index', expression: '(Inode-Nummer - 1) % Inodes pro Blockgruppe' },
{ name: 'Inode-Tabelle Start', expression: 'Partitionsstart + (Inode-Tabelle Block-Nummer × Block-Größe)' },
{ name: 'Inode Offset', expression: 'Inode-Tabelle Start + (Relativer Index × Inode-Größe)' },
{ name: 'Block Offset', expression: 'Partitionsstart + (Block-Nummer × Block-Größe)' },
{ name: 'Reservierte Inodes', expression: 'Inode-Tabelle Start + ((Inode-Nummer - 1) × Inode-Größe)' },
{ name: 'Inode-Tabelle Größe', expression: 'Inodes pro Blockgruppe × Inode-Größe' }
]
}
]);
}
calculate(variantId) {
if (variantId !== 'ext') return;
const values = this.getInputValues(variantId);
const results = {};
this.calculateEXT(values, results);
}
calculateEXT(values, results) {
// Superblock Position
if (checkDependencies(['partitionStartEXT', 'superblockOffsetEXT'])) {
results.superblockPos = values.partitionStartEXT + values.superblockOffsetEXT;
updateResultItem('superblockPosEXT', results.superblockPos, true,
`0x${values.partitionStartEXT.toString(16)} + 0x${values.superblockOffsetEXT.toString(16)} = 0x${results.superblockPos.toString(16)}`);
} else {
updateResultItem('superblockPosEXT', 0, false);
}
// Block Size (2^(10+n))
if (checkDependencies(['blockSizeExpEXT'])) {
results.blockSize = Math.pow(2, 10 + values.blockSizeExpEXT);
updateResultItem('blockSizeBytesEXT', results.blockSize, true,
`2^(10 + ${values.blockSizeExpEXT}) = 2^${10 + values.blockSizeExpEXT} = 0x${results.blockSize.toString(16)} (${results.blockSize} Bytes)`);
} else {
updateResultItem('blockSizeBytesEXT', 0, false);
}
// Total Blockgroups
if (checkDependencies(['totalBlocksEXT', 'blocksPerGroupEXT'])) {
results.totalBlockgroups = Math.ceil(values.totalBlocksEXT / values.blocksPerGroupEXT);
updateResultItem('totalBlockgroupsEXT', results.totalBlockgroups, true,
`Aufrunden(0x${values.totalBlocksEXT.toString(16)} ÷ 0x${values.blocksPerGroupEXT.toString(16)}) = ${results.totalBlockgroups}`);
} else {
updateResultItem('totalBlockgroupsEXT', 0, false);
}
// GDT Start (block after superblock)
if (checkDependencies(['partitionStartEXT', 'superblockOffsetEXT', 'blockSizeExpEXT']) && results.blockSize !== undefined) {
// If block size is 1024 (0x400), superblock is in block 1, GDT starts at block 2
// Otherwise, superblock is in block 0, GDT starts at block 1
const superblockBlock = (results.blockSize === 1024) ? 1 : 0;
const gdtBlock = superblockBlock + 1;
results.gdtStart = values.partitionStartEXT + (gdtBlock * results.blockSize);
updateResultItem('gdtStartEXT', results.gdtStart, true,
`0x${values.partitionStartEXT.toString(16)} + (Block ${gdtBlock} × 0x${results.blockSize.toString(16)}) = 0x${results.gdtStart.toString(16)}`);
} else {
updateResultItem('gdtStartEXT', 0, false);
}
// GDT Entry for specific Blockgroup
if (checkDependencies(['blockgroupNumberEXT', 'groupDescSizeEXT']) && results.gdtStart !== undefined) {
results.gdtBlockgroupOffset = results.gdtStart + (values.blockgroupNumberEXT * values.groupDescSizeEXT);
updateResultItem('gdtBlockgroupOffsetEXT', results.gdtBlockgroupOffset, true,
`0x${results.gdtStart.toString(16)} + (0x${values.blockgroupNumberEXT.toString(16)} × 0x${values.groupDescSizeEXT.toString(16)}) = 0x${results.gdtBlockgroupOffset.toString(16)}`);
} else {
updateResultItem('gdtBlockgroupOffsetEXT', 0, false);
}
// Inode Blockgroup
if (checkDependencies(['targetInodeEXT', 'inodesPerGroupEXT'])) {
results.inodeBlockgroup = Math.floor((values.targetInodeEXT - 1) / values.inodesPerGroupEXT);
updateResultItem('inodeBlockgroupEXT', results.inodeBlockgroup, true,
`Abrunden((0x${values.targetInodeEXT.toString(16)} - 1) ÷ 0x${values.inodesPerGroupEXT.toString(16)}) = ${results.inodeBlockgroup}`);
} else {
updateResultItem('inodeBlockgroupEXT', 0, false);
}
// Inode Relative Index
if (checkDependencies(['targetInodeEXT', 'inodesPerGroupEXT'])) {
results.inodeRelativeIndex = (values.targetInodeEXT - 1) % values.inodesPerGroupEXT;
updateResultItem('inodeRelativeIndexEXT', results.inodeRelativeIndex, true,
`(0x${values.targetInodeEXT.toString(16)} - 1) % 0x${values.inodesPerGroupEXT.toString(16)} = 0x${results.inodeRelativeIndex.toString(16)}`);
} else {
updateResultItem('inodeRelativeIndexEXT', 0, false);
}
// Inode Table Start
if (checkDependencies(['partitionStartEXT', 'inodeTableBlockGroupEXT', 'blockSizeExpEXT']) && results.blockSize !== undefined) {
results.inodeTableStart = values.partitionStartEXT + (values.inodeTableBlockGroupEXT * results.blockSize);
updateResultItem('inodeTableStartEXT', results.inodeTableStart, true,
`0x${values.partitionStartEXT.toString(16)} + (0x${values.inodeTableBlockGroupEXT.toString(16)} × 0x${results.blockSize.toString(16)}) = 0x${results.inodeTableStart.toString(16)}`);
} else {
updateResultItem('inodeTableStartEXT', 0, false);
}
// Inode Offset
if (checkDependencies(['targetInodeEXT', 'inodesPerGroupEXT', 'inodeSizeEXT']) && results.inodeTableStart !== undefined && results.inodeRelativeIndex !== undefined) {
results.inodeOffset = results.inodeTableStart + (results.inodeRelativeIndex * values.inodeSizeEXT);
updateResultItem('inodeOffsetEXT', results.inodeOffset, true,
`0x${results.inodeTableStart.toString(16)} + (0x${results.inodeRelativeIndex.toString(16)} × 0x${values.inodeSizeEXT.toString(16)}) = 0x${results.inodeOffset.toString(16)}`);
} else {
updateResultItem('inodeOffsetEXT', 0, false);
}
// Block Offset
if (checkDependencies(['partitionStartEXT', 'targetBlockEXT', 'blockSizeExpEXT']) && results.blockSize !== undefined) {
results.blockOffset = values.partitionStartEXT + (values.targetBlockEXT * results.blockSize);
updateResultItem('blockOffsetEXT', results.blockOffset, true,
`0x${values.partitionStartEXT.toString(16)} + (0x${values.targetBlockEXT.toString(16)} × 0x${results.blockSize.toString(16)}) = 0x${results.blockOffset.toString(16)}`);
} else {
updateResultItem('blockOffsetEXT', 0, false);
}
// Reserved Inodes (always in blockgroup 0, inode table)
if (results.inodeTableStart !== undefined && checkDependencies(['inodeSizeEXT'])) {
// Inode 1 (Bad Blocks) - Index 0
results.badBlocksInode = results.inodeTableStart + (0 * values.inodeSizeEXT);
updateResultItem('badBlocksInodeEXT', results.badBlocksInode, true,
`0x${results.inodeTableStart.toString(16)} + (0 × 0x${values.inodeSizeEXT.toString(16)}) = 0x${results.badBlocksInode.toString(16)}`);
// Inode 2 (Root Directory) - Index 1
results.rootDirInode = results.inodeTableStart + (1 * values.inodeSizeEXT);
updateResultItem('rootDirInodeEXT', results.rootDirInode, true,
`0x${results.inodeTableStart.toString(16)} + (1 × 0x${values.inodeSizeEXT.toString(16)}) = 0x${results.rootDirInode.toString(16)}`);
// Inode 3 (User Quotas) - Index 2
results.userQuotaInode = results.inodeTableStart + (2 * values.inodeSizeEXT);
updateResultItem('userQuotaInodeEXT', results.userQuotaInode, true,
`0x${results.inodeTableStart.toString(16)} + (2 × 0x${values.inodeSizeEXT.toString(16)}) = 0x${results.userQuotaInode.toString(16)}`);
// Inode 4 (Group Quotas) - Index 3
results.groupQuotaInode = results.inodeTableStart + (3 * values.inodeSizeEXT);
updateResultItem('groupQuotaInodeEXT', results.groupQuotaInode, true,
`0x${results.inodeTableStart.toString(16)} + (3 × 0x${values.inodeSizeEXT.toString(16)}) = 0x${results.groupQuotaInode.toString(16)}`);
// Inode 5 (Bootloader) - Index 4
results.bootloaderInode = results.inodeTableStart + (4 * values.inodeSizeEXT);
updateResultItem('bootloaderInodeEXT', results.bootloaderInode, true,
`0x${results.inodeTableStart.toString(16)} + (4 × 0x${values.inodeSizeEXT.toString(16)}) = 0x${results.bootloaderInode.toString(16)}`);
// Inode 8 (Journal) - Index 7
results.journalInode = results.inodeTableStart + (7 * values.inodeSizeEXT);
updateResultItem('journalInodeEXT', results.journalInode, true,
`0x${results.inodeTableStart.toString(16)} + (7 × 0x${values.inodeSizeEXT.toString(16)}) = 0x${results.journalInode.toString(16)}`);
} else {
updateResultItem('badBlocksInodeEXT', 0, false);
updateResultItem('rootDirInodeEXT', 0, false);
updateResultItem('userQuotaInodeEXT', 0, false);
updateResultItem('groupQuotaInodeEXT', 0, false);
updateResultItem('bootloaderInodeEXT', 0, false);
updateResultItem('journalInodeEXT', 0, false);
}
// Inode Table Size (Bytes)
if (checkDependencies(['inodesPerGroupEXT', 'inodeSizeEXT'])) {
results.inodeTableSize = values.inodesPerGroupEXT * values.inodeSizeEXT;
updateResultItem('inodeTableSizeEXT', results.inodeTableSize, true,
`0x${values.inodesPerGroupEXT.toString(16)} × 0x${values.inodeSizeEXT.toString(16)} = 0x${results.inodeTableSize.toString(16)} (${results.inodeTableSize} Bytes)`);
} else {
updateResultItem('inodeTableSizeEXT', 0, false);
}
// Inode Table Size (Blocks)
if (checkDependencies(['inodesPerGroupEXT', 'inodeSizeEXT', 'blockSizeExpEXT']) && results.blockSize !== undefined && results.inodeTableSize !== undefined) {
results.inodeTableSizeBlocks = Math.ceil(results.inodeTableSize / results.blockSize);
updateResultItem('inodeTableSizeBlocksEXT', results.inodeTableSizeBlocks, true,
`Aufrunden(0x${results.inodeTableSize.toString(16)} ÷ 0x${results.blockSize.toString(16)}) = ${results.inodeTableSizeBlocks} Blöcke`);
} else {
updateResultItem('inodeTableSizeBlocksEXT', 0, false);
}
}
}