RGBCube/uutils-coreutils
1
Fork 0
mirror of https://github.com/RGBCube/uutils-coreutils synced 2025-07-28 11:37:44 +00:00
Code Issues Activity

cp: use sparse copy on --sparse=always

Browse source 
Correct the behavior of `cp --reflink=never --sparse=always` so that
it performs a sparse copy. Before this commit, it was incorrectly
performing a dense copy.
This commit is contained in:
Jeffrey Finkelstein 2022-10-11 20:38:04 -04:00
parent 1172a7e781
commit 416a742e31
2 changed files with 28 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

27
tests/by-util/test_cp.rs
View file

@ -2318,3 +2318,30 @@ fn test_copy_contents_fifo() {
assert!(output.stderr.is_empty());
assert_eq!(at.read("outfile"), "foo");
}
#[cfg(target_os = "linux")]
#[test]
fn test_reflink_never_sparse_always() {
let (at, mut ucmd) = at_and_ucmd!();
// Create a file and make it a large sparse file.
//
// On common Linux filesystems, setting the length to one megabyte
// should cause the file to become a sparse file, but it depends
// on the system.
std::fs::File::create(at.plus("src"))
.unwrap()
.set_len(1024 * 1024)
.unwrap();
ucmd.args(&["--reflink=never", "--sparse=always", "src", "dest"])
.succeeds()
.no_stdout()
.no_stderr();
at.file_exists("dest");
let src_metadata = std::fs::metadata(at.plus("src")).unwrap();
let dest_metadata = std::fs::metadata(at.plus("dest")).unwrap();
assert_eq!(src_metadata.blocks(), dest_metadata.blocks());
assert_eq!(dest_metadata.len(), 1024 * 1024);
}