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vfs: try to seek buffer on read only files

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This commit is contained in:
Fabian Möller
2018-08-11 10:18:19 +02:00
committed by Nick Craig-Wood
parent 7d35b14138
commit 552eb8e06b
4 changed files with 167 additions and 1 deletions
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10
vfs/read.go
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@@ -104,8 +104,16 @@ func (fh *ReadFileHandle) seek(offset int64, reopen bool) (err error) {
if fh.noSeek {
return ESPIPE
}
fh.r.StopBuffering() // stop the background reading first
fh.hash = nil
if !reopen {
ar := fh.r.GetAsyncReader()
// try to fullfill the seek with buffer discard
if ar != nil && ar.SkipBytes(int(offset-fh.offset)) {
fh.offset = offset
return nil
}
}
fh.r.StopBuffering() // stop the background reading first
oldReader := fh.r.GetReader()
r, ok := oldReader.(*chunkedreader.ChunkedReader)
if !ok {