Dev utils tokyo 5 dm perms #13
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ryoqun
commented
Aug 1, 2023
Comment on lines
869
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922
| let rc_box_addr = | ||
| target_account.data.borrow_mut().as_mut_ptr() as *mut RcBox<RefCell<&mut [u8]>>; | ||
| let rc_box_size = mem::size_of::<RcBox<RefCell<&mut [u8]>>>(); | ||
| account.data.borrow_mut().as_mut_ptr() as *mut RcBox<RefCell<&mut [u8]>>; | ||
| let rc_box = RcBox { | ||
| strong: 1, | ||
| weak: 0, | ||
| // The difference with | ||
| // TEST_FORBID_LEN_UPDATE_AFTER_OWNERSHIP_CHANGE_MOVING_DATA_POINTER | ||
| // is that we don't move the data pointer past the | ||
| // RcBox. This is needed to avoid the "Invalid account | ||
| // info pointer" check when direct mapping is enabled. | ||
| // This also means we don't need to update the | ||
| // serialized len like we do in the other test. | ||
| value: unsafe { RefCell::new(slice::from_raw_parts_mut( | ||
| target_account.data.borrow_mut().as_mut_ptr(), | ||
| target_len, | ||
| )) }, | ||
| }; | ||
| unsafe { | ||
| std::ptr::write( | ||
| rc_box_addr, | ||
| RcBox { | ||
| strong: 1, | ||
| weak: 0, | ||
| // The difference with | ||
| // TEST_FORBID_LEN_UPDATE_AFTER_OWNERSHIP_CHANGE_MOVING_DATA_POINTER | ||
| // is that we don't move the data pointer past the | ||
| // RcBox. This is needed to avoid the "Invalid account | ||
| // info pointer" check when direct mapping is enabled. | ||
| // This also means we don't need to update the | ||
| // serialized len like we do in the other test. | ||
| value: RefCell::new(slice::from_raw_parts_mut( | ||
| account.data.borrow_mut().as_mut_ptr(), | ||
| 0, | ||
| )), | ||
| }, | ||
| ); | ||
| } | ||
| rc_box, | ||
| ) | ||
| }; | ||
|
|
||
| let rc_box2 = RcBox { | ||
| strong: 1, | ||
| weak: 0, | ||
| // The difference with | ||
| // TEST_FORBID_LEN_UPDATE_AFTER_OWNERSHIP_CHANGE_MOVING_DATA_POINTER | ||
| // is that we don't move the data pointer past the | ||
| // RcBox. This is needed to avoid the "Invalid account | ||
| // info pointer" check when direct mapping is enabled. | ||
| // This also means we don't need to update the | ||
| // serialized len like we do in the other test. | ||
| value: unsafe { RefCell::new(slice::from_raw_parts_mut( | ||
| target_account.data.borrow_mut().as_mut_ptr(), | ||
| target_len, | ||
| )) }, | ||
| }; | ||
| let rc_box_size = mem::size_of::<RcBox<RefCell<&mut [u8]>>>(); | ||
|
|
||
| let serialized_len_ptr = | ||
| unsafe { account.data.borrow_mut().as_mut_ptr().offset(-8) as *mut u64 }; | ||
| let serialized_len_ptr2 = | ||
| unsafe { target_account.data.borrow_mut().as_mut_ptr().offset(-8) as *mut u64 }; | ||
| // Place a RcBox<RefCell<&mut [u8]>> in the account data. This | ||
| // allows us to test having CallerAccount::ref_to_len_in_vm in an | ||
| // account region. | ||
| unsafe { | ||
| std::ptr::write( | ||
| &account.data as *const _ as usize as *mut Rc<RefCell<&mut [u8]>>, | ||
| &target_account.data as *const _ as usize as *mut Rc<RefCell<&mut [u8]>>, | ||
| Rc::from_raw(((rc_box_addr as usize) + mem::size_of::<usize>() * 2) as *mut _), | ||
| ); | ||
| } |
ryoqun
commented
Aug 1, 2023
| let account = &accounts[0]; | ||
| //msg!("self-cpi-pre: {:02x?}", unsafe { slice::from_raw_parts(account.data.borrow().as_ptr(), 100) }); | ||
| //account.data.borrow_mut()[32] = 0x99; | ||
| account.data.borrow_mut()[32] = 0x5; |
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Problem
Summary of Changes
Fixes #