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yes: avoid kernel side length validation (#12115)

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oech3
2026-05-04 17:12:43 +09:00
committed by GitHub
parent 4a69cf0c5e
commit 45a48a1365
1 changed files with 4 additions and 3 deletions
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src/uu/yes/src/yes.rs
+4 -3
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@@ -128,11 +128,12 @@ pub fn exec(bytes: &[u8], aligned: bool) -> io::Result<()> {
&& rustix::pipe::fcntl_setpipe_size(&stdout, MAX_ROOTLESS_PIPE_SIZE).is_ok()
&& p_write.write_all(bytes).is_ok()
{
if aligned && tee(&p_read, &stdout, PAGE_SIZE).is_ok() {
while let Ok(1..) = tee(&p_read, &stdout, usize::MAX) {}
if aligned && tee(&p_read, &stdout, MAX_ROOTLESS_PIPE_SIZE).is_ok() {
while let Ok(1..) = tee(&p_read, &stdout, MAX_ROOTLESS_PIPE_SIZE) {}
} else if let Ok((broker_read, broker_write)) = pipe() {
// tee() cannot control offset and write to non-pipe
'hybrid: while let Ok(mut remain) = tee(&p_read, &broker_write, usize::MAX) {
'hybrid: while let Ok(mut remain) = tee(&p_read, &broker_write, MAX_ROOTLESS_PIPE_SIZE)
{
debug_assert!(remain == bytes.len(), "splice() should cleanup pipe");
while remain > 0 {
if let Ok(s) = splice(&broker_read, &stdout, remain) {