Function zxio_maybe_faultable_copy_impl 

#[unsafe(no_mangle)]
pub unsafe fn zxio_maybe_faultable_copy_impl(
    dest: *mut u8,
    src: *const u8,
    count: usize,
    ret_dest: bool,
) -> bool

Provides an implementation for zxio’s zxio_maybe_faultable_copy that supports catching faults.

See zxio’s zxio_maybe_faultable_copy documentation for more details.

Safety

Only one of src/dest may be an address to a buffer owned by user/restricted-mode (ret_dest indicates whether the user-owned buffer is dest when true). The other must be a valid Starnix/normal-mode buffer that will never cause a fault when the first count bytes are read/written.