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cksum: accept directories as empty files

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This commit is contained in:
Terts Diepraam 2021-12-26 21:46:57 +01:00
parent 8885263ad5
commit 7ae9e0a7eb
2 changed files with 11 additions and 6 deletions
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12
src/uu/cksum/src/cksum.rs
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@ -80,12 +80,18 @@ fn cksum(fname: &str) -> io::Result<(u32, usize)> {
let mut crc = 0u32;
let mut size = 0usize;
let file;
let mut rd: Box<dyn Read> = match fname {
"-" => Box::new(stdin()),
_ => {
file = File::open(Path::new(fname))?;
Box::new(BufReader::new(file))
let p = Path::new(fname);
// Directories should not give an error, but should be interpreted
// as empty files to match GNU semantics.
if p.is_dir() {
Box::new(BufReader::new(io::empty())) as Box<dyn Read>
} else {
Box::new(BufReader::new(File::open(p)?)) as Box<dyn Read>
}
}
};

5
tests/by-util/test_cksum.rs
View file

@ -74,9 +74,8 @@ fn test_invalid_file() {
at.mkdir(folder_name);
ts.ucmd()
.arg(folder_name)
.fails()
.no_stdout()
.stderr_contains("cksum: asdf: Is a directory");
.succeeds()
.stdout_only("4294967295 0 asdf\n");
}
// Make sure crc is correct for files larger than 32 bytes