Formatação (cargo fmt) e ajustes do clippy para o CI da 1.0.0
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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
1 parent
74218e7beb
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49 files changed
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@@ -12,13 +12,19 @@ use std::collections::{HashMap, HashSet};
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const HFS_EPOCH: i64 = 2_082_844_800;
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fn be16(b: &[u8], o: usize) -> u16 {
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b.get(o..o + 2).map(|s| u16::from_be_bytes([s[0], s[1]])).unwrap_or(0)
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b.get(o..o + 2)
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.map(|s| u16::from_be_bytes([s[0], s[1]]))
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.unwrap_or(0)
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}
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fn be32(b: &[u8], o: usize) -> u32 {
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b.get(o..o + 4).map(|s| u32::from_be_bytes(s.try_into().unwrap())).unwrap_or(0)
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b.get(o..o + 4)
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.map(|s| u32::from_be_bytes(s.try_into().unwrap()))
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.unwrap_or(0)
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}
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fn be64(b: &[u8], o: usize) -> u64 {
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b.get(o..o + 8).map(|s| u64::from_be_bytes(s.try_into().unwrap())).unwrap_or(0)
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b.get(o..o + 8)
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.map(|s| u64::from_be_bytes(s.try_into().unwrap()))
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.unwrap_or(0)
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}
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#[derive(Clone, Debug, Default)]
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@@ -29,7 +35,11 @@ struct Fork {
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}
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fn parse_fork(b: &[u8]) -> Fork {
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let mut f = Fork { size: be64(b, 0), blocks: be32(b, 12), extents: vec![] };
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let mut f = Fork {
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size: be64(b, 0),
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blocks: be32(b, 12),
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extents: vec![],
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};
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for i in 0..8 {
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let (s, c) = (be32(b, 16 + i * 8), be32(b, 20 + i * 8));
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if c != 0 {
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@@ -105,9 +115,13 @@ impl<'a> Vol<'a> {
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have = ex.iter().map(|e| e.1 as u64).sum();
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let _ = have;
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}
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merge_extents(ex.into_iter().map(|(s, c)| Extent::new(self.block_off(s as u64), c as u64 * self.bs)).collect::<Vec<_>>())
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.into_iter()
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.collect()
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merge_extents(
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ex.into_iter()
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.map(|(s, c)| Extent::new(self.block_off(s as u64), c as u64 * self.bs))
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.collect::<Vec<_>>(),
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)
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.into_iter()
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.collect()
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}
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/// Extensões além das oito iniciais, procuradas no arquivo de overflow (árvore B+).
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@@ -119,7 +133,9 @@ impl<'a> Vol<'a> {
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};
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let total_nodes = self.extents_file.size / node_size as u64;
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for n in 1..total_nodes.min(100_000) {
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let Some(node) = self.read_tree_node(&self.extents_file, n as u32, node_size) else { continue };
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let Some(node) = self.read_tree_node(&self.extents_file, n as u32, node_size) else {
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continue;
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};
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if node[8] != 0xFF {
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continue;
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}
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@@ -193,8 +209,13 @@ fn records(node: &[u8]) -> Vec<&[u8]> {
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}
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fn utf16be(b: &[u8]) -> String {
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let u: Vec<u16> = b.chunks_exact(2).map(|c| u16::from_be_bytes([c[0], c[1]])).collect();
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String::from_utf16_lossy(&u).replace('/', "_").replace(':', "/")
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let u: Vec<u16> = b
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.chunks_exact(2)
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.map(|c| u16::from_be_bytes([c[0], c[1]]))
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.collect();
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String::from_utf16_lossy(&u)
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.replace('/', "_")
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.replace(':', "/")
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}
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struct CatFile {
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@@ -213,7 +234,14 @@ fn date(d: u32) -> Option<i64> {
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}
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/// Decodifica um registro do catálogo (chave + dados). `max_id` descarta lixo.
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fn decode_record(r: &[u8], max_id: u32, files: &mut Vec<CatFile>, threads: &mut HashMap<u32, (u32, String)>, folders: &mut HashMap<(u32, String), u32>, stale: bool) {
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fn decode_record(
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r: &[u8],
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max_id: u32,
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files: &mut Vec<CatFile>,
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threads: &mut HashMap<u32, (u32, String)>,
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folders: &mut HashMap<(u32, String), u32>,
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stale: bool,
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) {
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let klen = be16(r, 0) as usize;
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if klen < 6 || klen + 2 > r.len() {
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return;
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@@ -240,7 +268,10 @@ fn decode_record(r: &[u8], max_id: u32, files: &mut Vec<CatFile>, threads: &mut
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// thread de pasta: chave = (id da pasta, ""); dados = (pai, nome)
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let pn = be16(rec, 8) as usize;
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if pn <= 255 {
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threads.entry(parent).or_insert((be32(rec, 4), utf16be(rec.get(10..10 + pn * 2).unwrap_or(&[]))));
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threads.entry(parent).or_insert((
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be32(rec, 4),
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utf16be(rec.get(10..10 + pn * 2).unwrap_or(&[])),
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));
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}
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}
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2 if rec.len() >= 248 => {
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@@ -263,7 +294,10 @@ fn decode_record(r: &[u8], max_id: u32, files: &mut Vec<CatFile>, threads: &mut
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4 if rec.len() >= 10 => {
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let pn = be16(rec, 8) as usize;
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if pn <= 255 {
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threads.entry(parent).or_insert((be32(rec, 4), utf16be(rec.get(10..10 + pn * 2).unwrap_or(&[]))));
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threads.entry(parent).or_insert((
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be32(rec, 4),
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utf16be(rec.get(10..10 + pn * 2).unwrap_or(&[])),
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));
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}
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}
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_ => {}
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@@ -271,7 +305,13 @@ fn decode_record(r: &[u8], max_id: u32, files: &mut Vec<CatFile>, threads: &mut
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}
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/// Procura registros de arquivo nas sobras de um nó (entre os dados e a tabela de offsets).
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fn scan_slack(node: &[u8], max_id: u32, files: &mut Vec<CatFile>, threads: &mut HashMap<u32, (u32, String)>, folders: &mut HashMap<(u32, String), u32>) {
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fn scan_slack(
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node: &[u8],
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max_id: u32,
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files: &mut Vec<CatFile>,
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threads: &mut HashMap<u32, (u32, String)>,
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folders: &mut HashMap<(u32, String), u32>,
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) {
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let n = be16(node, 10) as usize;
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let table = node.len().saturating_sub(2 * (n + 1));
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let used_end = (be16(node, table) as usize).max(14);
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@@ -284,7 +324,7 @@ fn scan_slack(node: &[u8], max_id: u32, files: &mut Vec<CatFile>, threads: &mut
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if parent >= 1 && parent < max_id.max(16) {
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let d = (p + 2 + klen + 1) & !1;
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let rt = be16(node, d);
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if matches!(rt, 1 | 2 | 3 | 4) {
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if matches!(rt, 1..=4) {
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let end = (d + 248).min(table);
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decode_record(&node[p..end], max_id, files, threads, folders, true);
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p = d + if rt == 2 { 248 } else { 16 };
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@@ -299,15 +339,22 @@ fn scan_slack(node: &[u8], max_id: u32, files: &mut Vec<CatFile>, threads: &mut
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pub fn scan(ctx: &mut Ctx, base: u64, part_len: u64) -> VolumeScan {
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let mut res = VolumeScan::default();
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let _ = part_len;
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let Some(vbase) = locate(ctx.src, base) else { return res };
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let Some(vol) = Vol::open(ctx.src, vbase) else { return res };
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let Some(vbase) = locate(ctx.src, base) else {
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return res;
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};
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let Some(vol) = Vol::open(ctx.src, vbase) else {
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return res;
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};
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// Mapa de espaço livre.
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if let Some(bm) = vol.read_fork_all(&vol.alloc, (vol.total / 8 + 1) as usize) {
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let mut free = vec![];
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let mut run: Option<u64> = None;
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for b in 0..vol.total {
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let used = bm.get((b / 8) as usize).map(|x| x >> (7 - (b % 8)) & 1 == 1).unwrap_or(true);
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let used = bm
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.get((b / 8) as usize)
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.map(|x| x >> (7 - (b % 8)) & 1 == 1)
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.unwrap_or(true);
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match (used, run) {
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(false, None) => run = Some(b),
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(true, Some(s)) => {
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@@ -327,7 +374,9 @@ pub fn scan(ctx: &mut Ctx, base: u64, part_len: u64) -> VolumeScan {
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res.warnings.push("HFS+: catálogo ilegível.".into());
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return res;
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};
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let Some(hdr) = vol.read_tree_node(&vol.catalog, 0, ns) else { return res };
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let Some(hdr) = vol.read_tree_node(&vol.catalog, 0, ns) else {
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return res;
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};
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let first_leaf = be32(&hdr, 24);
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let max_id = vol.next_cnid.max(16);
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let mut files: Vec<CatFile> = vec![];
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@@ -342,7 +391,9 @@ pub fn scan(ctx: &mut Ctx, base: u64, part_len: u64) -> VolumeScan {
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if (ctx.cancelled)() {
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return res;
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}
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let Some(node) = vol.read_tree_node(&vol.catalog, n, ns) else { break };
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let Some(node) = vol.read_tree_node(&vol.catalog, n, ns) else {
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break;
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};
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if node[8] != 0xFF {
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break;
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}
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@@ -360,7 +411,15 @@ pub fn scan(ctx: &mut Ctx, base: u64, part_len: u64) -> VolumeScan {
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// Diário: cópias antigas de nós folha do catálogo.
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if vol.journal_info != 0 {
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scan_journal(&vol, ns, max_id, &mut files, &mut threads, &mut folders, ctx);
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scan_journal(
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&vol,
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ns,
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max_id,
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&mut files,
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&mut threads,
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&mut folders,
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ctx,
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);
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}
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// Caminho de cada pasta a partir dos threads.
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@@ -385,13 +444,19 @@ pub fn scan(ctx: &mut Ctx, base: u64, part_len: u64) -> VolumeScan {
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let free_set = res.free.clone().unwrap_or_default();
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let mut seen: HashSet<(u32, u64)> = HashSet::new();
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for f in files.iter().filter(|f| f.stale && !live_ids.contains(&f.id)) {
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for f in files
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.iter()
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.filter(|f| f.stale && !live_ids.contains(&f.id))
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{
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if f.data.size == 0 || f.data.extents.is_empty() {
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continue;
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}
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let ex = vol.fork_extents(&f.data, f.id, 0);
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let total_len: u64 = ex.iter().map(|e| e.len).sum();
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if ex.is_empty() || total_len < f.data.size || ex.iter().any(|e| e.end() > vol.base + vol.total * vol.bs) {
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if ex.is_empty()
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|| total_len < f.data.size
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|| ex.iter().any(|e| e.end() > vol.base + vol.total * vol.bs)
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{
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continue;
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}
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if !seen.insert((f.id, ex[0].offset)) {
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@@ -402,9 +467,15 @@ pub fn scan(ctx: &mut Ctx, base: u64, part_len: u64) -> VolumeScan {
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// Blocos já reaproveitados?
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let reused = extents.iter().filter(|e| !covered_by(&free_set, e)).count();
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let (conf, note) = if reused == 0 {
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(Confidence::High, "registro apagado do catálogo HFS+; blocos ainda livres".to_string())
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(
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Confidence::High,
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"registro apagado do catálogo HFS+; blocos ainda livres".to_string(),
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)
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} else {
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(Confidence::Low, "alguns blocos do arquivo já foram reaproveitados".to_string())
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(
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Confidence::Low,
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"alguns blocos do arquivo já foram reaproveitados".to_string(),
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)
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};
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let nf = NewFound {
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name: f.name.clone(),
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@@ -426,7 +497,9 @@ pub fn scan(ctx: &mut Ctx, base: u64, part_len: u64) -> VolumeScan {
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fn covered_by(free: &[Extent], e: &Extent) -> bool {
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let i = free.partition_point(|f| f.end() <= e.offset);
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free.get(i).map(|f| f.offset <= e.offset && f.end() >= e.end()).unwrap_or(false)
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free.get(i)
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.map(|f| f.offset <= e.offset && f.end() >= e.end())
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.unwrap_or(false)
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}
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impl Vol<'_> {
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@@ -434,7 +507,14 @@ impl Vol<'_> {
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let mut out = vec![];
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for &(s, c) in &f.extents {
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let n = (c as u64 * self.bs) as usize;
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out.extend(read_vec(self.src, self.block_off(s as u64), n.min(max.saturating_sub(out.len()))).ok()?);
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out.extend(
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read_vec(
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self.src,
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self.block_off(s as u64),
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n.min(max.saturating_sub(out.len())),
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)
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.ok()?,
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);
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if out.len() >= max {
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break;
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}
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@@ -444,8 +524,21 @@ impl Vol<'_> {
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}
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/// Procura nós folha do catálogo nas transações guardadas no diário.
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fn scan_journal(vol: &Vol, ns: usize, max_id: u32, files: &mut Vec<CatFile>, threads: &mut HashMap<u32, (u32, String)>, folders: &mut HashMap<(u32, String), u32>, ctx: &Ctx) {
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let Some(info) = read_vec(vol.src, vol.block_off(vol.journal_info as u64), 52).ok().filter(|b| b.len() == 52) else { return };
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fn scan_journal(
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vol: &Vol,
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ns: usize,
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max_id: u32,
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files: &mut Vec<CatFile>,
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threads: &mut HashMap<u32, (u32, String)>,
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folders: &mut HashMap<(u32, String), u32>,
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ctx: &Ctx,
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) {
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let Some(info) = read_vec(vol.src, vol.block_off(vol.journal_info as u64), 52)
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.ok()
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.filter(|b| b.len() == 52)
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else {
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return;
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};
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let (joff, jsize) = (be64(&info, 36), be64(&info, 44));
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if jsize == 0 || jsize > 1 << 30 || vol.base + joff + jsize > vol.src.size() {
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return;
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@@ -457,14 +550,19 @@ fn scan_journal(vol: &Vol, ns: usize, max_id: u32, files: &mut Vec<CatFile>, thr
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return;
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}
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let n = chunk.min(jsize - pos) as usize;
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let Ok(buf) = read_vec(vol.src, vol.base + joff + pos, n + ns) else { break };
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let Ok(buf) = read_vec(vol.src, vol.base + joff + pos, n + ns) else {
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break;
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};
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let mut i = 0;
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while i + ns <= buf.len().min(n + ns) && i < n {
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let nd = &buf[i..i + ns];
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// nó folha do catálogo: kind = -1, altura 1, registros plausíveis
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if nd[8] == 0xFF && nd[9] == 1 && be16(nd, 10) > 0 && (be16(nd, 10) as usize) < ns / 8 {
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let table = ns - 2 * (be16(nd, 10) as usize + 1);
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if (be16(nd, ns - 2) as usize) == 14 && be16(nd, table) as usize > 14 && (be16(nd, table) as usize) <= table {
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if (be16(nd, ns - 2) as usize) == 14
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&& be16(nd, table) as usize > 14
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&& (be16(nd, table) as usize) <= table
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{
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for r in records(nd) {
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decode_record(r, max_id, files, threads, folders, true);
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}
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Reference in new issue
Block a user