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tar/asm: don't defer file closing

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this `for {}` can read many files. defering the file handle close can
cause an EMFILE (too many open files).
This commit is contained in:
Vincent Batts 2015-07-15 13:43:48 -04:00
parent 86ada47639
commit e33913bf75
1 changed files with 3 additions and 1 deletions
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4
tar/asm/assemble.go
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@ -44,10 +44,10 @@ func NewOutputTarStream(fg storage.FileGetter, up storage.Unpacker) io.ReadClose
pw.CloseWithError(err) pw.CloseWithError(err)
break break
} }
defer fh.Close()
c := crc64.New(storage.CRCTable) c := crc64.New(storage.CRCTable)
tRdr := io.TeeReader(fh, c) tRdr := io.TeeReader(fh, c)
if _, err := io.Copy(pw, tRdr); err != nil { if _, err := io.Copy(pw, tRdr); err != nil {
fh.Close()
pw.CloseWithError(err) pw.CloseWithError(err)
break break
} }
@ -55,9 +55,11 @@ func NewOutputTarStream(fg storage.FileGetter, up storage.Unpacker) io.ReadClose
// I would rather this be a comparable ErrInvalidChecksum or such, // I would rather this be a comparable ErrInvalidChecksum or such,
// but since it's coming through the PipeReader, the context of // but since it's coming through the PipeReader, the context of
// _which_ file would be lost... // _which_ file would be lost...
fh.Close()
pw.CloseWithError(fmt.Errorf("file integrity checksum failed for %q", entry.Name)) pw.CloseWithError(fmt.Errorf("file integrity checksum failed for %q", entry.Name))
break break
} }
fh.Close()
} }
} }
pw.Close() pw.Close()