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Zero the REPARSE_MOUNTPOINT_DATA_BUFFER header

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Makes sure the full header is correctly initialized, including reserve parameters.
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Chris Denton 2023-02-10 18:07:23 +00:00
parent d1ac43a9b9
commit 59b11e8fa3
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1 changed files with 2 additions and 0 deletions
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library/std/src/sys/windows/fs.rs
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@ -1393,6 +1393,8 @@ fn symlink_junction_inner(original: &Path, junction: &Path) -> io::Result<()> {
let mut data = Align8([MaybeUninit::<u8>::uninit(); c::MAXIMUM_REPARSE_DATA_BUFFER_SIZE]);
let data_ptr = data.0.as_mut_ptr();
let db = data_ptr.cast::<c::REPARSE_MOUNTPOINT_DATA_BUFFER>();
// Zero the header to ensure it's fully initialized, including reserved parameters.
*db = mem::zeroed();
let buf = ptr::addr_of_mut!((*db).ReparseTarget).cast::<c::WCHAR>();
let mut i = 0;
// FIXME: this conversion is very hacky