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cp: Create backup before hardlink

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This commit is contained in:
Eli Youngs 2022-02-01 22:47:30 -08:00
parent 87e582b5e0
commit 45751e9e48
2 changed files with 23 additions and 0 deletions
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9
src/uu/cp/src/cp.rs
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@ -1309,6 +1309,15 @@ fn copy_file(
match options.copy_mode {
CopyMode::Link => {
if dest.exists() {
let backup_path =
backup_control::get_backup_path(options.backup, &dest, &options.backup_suffix);
if let Some(backup_path) = backup_path {
backup_dest(&dest, &backup_path)?;
fs::remove_file(&dest)?;
}
}
fs::hard_link(&source, &dest).context(context)?;
}
CopyMode::Copy => {

14
tests/by-util/test_cp.rs
View file

@ -1444,3 +1444,17 @@ fn test_cp_archive_on_nonexistent_file() {
"cp: cannot stat 'nonexistent_file.txt': No such file or directory (os error 2)",
);
}
#[test]
fn test_cp_link_backup() {
let (at, mut ucmd) = at_and_ucmd!();
at.touch("file2");
ucmd.arg("-l")
.arg("-b")
.arg(TEST_HELLO_WORLD_SOURCE)
.arg("file2")
.succeeds();
assert!(at.file_exists("file2~"));
assert_eq!(at.read("file2"), "Hello, World!\n");
}