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Merge branch 'master' into 'master'

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Fmaps: Fix bug with syncing

See merge request redox-os/redoxfs!36
This commit is contained in:
Jeremy Soller
2018-07-03 13:23:34 +00:00
parent 3906a90a7b 53a3f6d7e9
commit 3ef8557865
1 changed files with 8 additions and 4 deletions
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src/mount/redox/resource.rs
+8 -4
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@@ -204,14 +204,17 @@ impl FileResource {
fn sync_fmap<D: Disk>(&mut self, maps: &mut Fmaps, fs: &mut FileSystem<D>) -> Result<()> {
if let Some((i, key_exact)) = self.fmap.as_ref() {
let (_, value) = maps.index(*i).as_mut().expect("mapping dropped while still referenced");
let (key_round, value) = maps.index(*i).as_mut().expect("mapping dropped while still referenced");
let rel_offset = key_exact.offset - key_round.offset;
// Minimum out of our size and the original file size
let actual_size = value.actual_size.min(key_exact.size);
let actual_size = (value.actual_size - rel_offset).min(key_exact.size);
let mut count = 0;
while count < actual_size {
let mtime = SystemTime::now().duration_since(UNIX_EPOCH).unwrap();
match fs.write_node(self.block, key_exact.offset as u64 + count as u64, &value.buffer[count..actual_size],
match fs.write_node(self.block, key_exact.offset as u64 + count as u64,
&value.buffer[rel_offset..][count..actual_size],
mtime.as_secs(), mtime.subsec_nanos())? {
0 => {
eprintln!("Fmap failed to write whole buffer, encountered EOF early.");
@@ -306,7 +309,8 @@ impl<D: Disk> Resource<D> for FileResource {
let mut content = vec![0; key_round.size];
let mut count = 0;
while count < key_round.size {
match fs.read_node(self.block, key_round.offset as u64 + count as u64, &mut content[count..])? {
match fs.read_node(self.block, key_round.offset as u64 + count as u64,
&mut content[key_round.offset..][count..key_round.size])? {
0 => break,
n => count += n
}