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Merge pull request #3129 from jfinkels/dd-partial-records

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dd: correctly account for partial record written
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Terts Diepraam 2022-02-13 12:52:09 +01:00 • committed by GitHub
commit 85c4fb3981
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2 changed files with 16 additions and 9 deletions
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11
src/uu/dd/src/dd.rs
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@ -334,17 +334,14 @@ where
let mut bytes_total = 0;
for chunk in buf.chunks(self.obs) {
match self.write(chunk)? {
wlen if wlen < chunk.len() => {
let wlen = self.write(chunk)?;
if wlen < self.obs {
writes_partial += 1;
bytes_total += wlen;
}
wlen => {
} else {
writes_complete += 1;
}
bytes_total += wlen;
}
}
}
Ok(WriteStat {
writes_complete,

10
tests/by-util/test_dd.rs
View file

@ -692,5 +692,15 @@ fn test_seek_do_not_overwrite() {
assert_eq!(at.read("outfile"), "a2");
}
#[test]
fn test_partial_records_out() {
new_ucmd!()
.args(&["bs=2", "status=noxfer"])
.pipe_in("abc")
.succeeds()
.stdout_is("abc")
.stderr_is("1+1 records in\n1+1 records out\n");
}
// conv=[ascii,ebcdic,ibm], conv=[ucase,lcase], conv=[block,unblock], conv=sync
// TODO: Move conv tests from unit test module