Function sunrise_libuser::syscalls::unmap_process_memory

pub unsafe fn unmap_process_memory(
    dstaddr: usize, 
    proc_handle: &Process, 
    srcaddr: usize, 
    size: usize
) -> Result<(), KernelError>

Unmaps a memory range mapped with map_process_memory(). dst_addr is an address in the current address space, while src_addr is the address in the remote address space that was previously mapped.

It is possible to partially unmap a ProcessMemory.

Safety

This function unmaps the memory, invalidating any pointer to the given region. The user must take care that no pointers point to this region before calling this function.

Errors

• InvalidAddress
  • src_addr or dst_addr is not aligned to 0x1000.
• InvalidSize
  • size is 0
  • size is not aligned to 0x1000.
• InvalidMemState
  • src_addr + size overflows
  • dst_addr + size overflows
  • The src region is outside of the UserLand address space.
  • The dst region is outside of the UserLand address space, or within the heap or map memory region.
  • The src memory pages does not have the MAP_PROCESS state.
  • The src memory pages is not of the ProcessMemory type.
• InvalidMemRange
  • The given source range does not map the same pages as the given dst range.
• InvalidHandle
  • The handle passed as an argument does not exist or is not a Process handle.