6.1-stable review patch. If anyone has any objections, please let me know.
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From: Charles Mirabile cmirabil@redhat.com
commit 8479063f1fbee201a8739130e816cc331b675838 upstream.
In order for `AT_EMPTY_PATH` to work as expected, the fact that the user wants that behavior needs to make it to `getname_flags` or it will return ENOENT.
Fixes: cf30da90bc3a ("io_uring: add support for IORING_OP_LINKAT") Cc: stable@vger.kernel.org Link: https://github.com/axboe/liburing/issues/995 Signed-off-by: Charles Mirabile cmirabil@redhat.com Link: https://lore.kernel.org/r/20231120105545.1209530-1-cmirabil@redhat.com Signed-off-by: Jens Axboe axboe@kernel.dk Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- io_uring/fs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/io_uring/fs.c +++ b/io_uring/fs.c @@ -254,7 +254,7 @@ int io_linkat_prep(struct io_kiocb *req, newf = u64_to_user_ptr(READ_ONCE(sqe->addr2)); lnk->flags = READ_ONCE(sqe->hardlink_flags);
- lnk->oldpath = getname(oldf); + lnk->oldpath = getname_uflags(oldf, lnk->flags); if (IS_ERR(lnk->oldpath)) return PTR_ERR(lnk->oldpath);