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chown: allow setting arbitrary numeric user ID

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Update `chown` to allow setting the owner of a file to a numeric user
ID regardless of whether a corresponding username exists on the
system.

For example,

    $ touch f && sudo chown 12345 f

succeeds even though there is no named user with ID 12345.

Fixes #3380.
This commit is contained in:
Jeffrey Finkelstein 2022-04-23 12:39:43 -04:00 • committed by Sylvestre Ledru
parent 08b6dd4975
commit 55550e1a6e
2 changed files with 34 additions and 4 deletions
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23
tests/by-util/test_chown.rs
View file

@ -418,6 +418,29 @@ fn test_chown_only_user_id() {
.stderr_contains(&"failed to change");
}
/// Test for setting the owner to a user ID for a user that does not exist.
///
/// For example:
///
/// $ touch f && chown 12345 f
///
/// succeeds with exit status 0 and outputs nothing. The owner of the
/// file is set to 12345, even though no user with that ID exists.
///
/// This test must be run as root, because only the root user can
/// transfer ownership of a file.
#[test]
fn test_chown_only_user_id_nonexistent_user() {
let ts = TestScenario::new(util_name!());
let at = ts.fixtures.clone();
at.touch("f");
if let Ok(result) = run_ucmd_as_root(&ts, &["12345", "f"]) {
result.success().no_stdout().no_stderr();
} else {
print!("Test skipped; requires root user");
}
}
#[test]
// FixME: stderr = chown: ownership of 'test_chown_file1' retained as cuuser:wheel
#[cfg(not(target_os = "freebsd"))]