318 pub struct FileDescriptorVec {  struct
320     pub fds: [Option<Box<File>>; FileDescriptorVec::PROCESS_MAX_FD],  argument
323 impl FileDescriptorVec {  impl
326     pub fn new() -> Box<FileDescriptorVec> {  in new()
328         let mut data: [MaybeUninit<Option<Box<File>>>; FileDescriptorVec::PROCESS_MAX_FD] =  in new()
332         for i in 0..FileDescriptorVec::PROCESS_MAX_FD {  in new()
336         let data: [Option<Box<File>>; FileDescriptorVec::PROCESS_MAX_FD] = unsafe {  in new()
337             core::mem::transmute::<_, [Option<Box<File>>; FileDescriptorVec::PROCESS_MAX_FD]>(data)  in new()
341         return Box::new(FileDescriptorVec { fds: data });  in new()
347     pub fn clone(&self) -> Box<FileDescriptorVec> {  in clone()  argument
348         let mut res: Box<FileDescriptorVec> = FileDescriptorVec::new();  in clone()
349         for i in 0..FileDescriptorVec::PROCESS_MAX_FD {  in clone()
359     pub fn from_pcb(pcb: &'static process_control_block) -> Option<&'static mut FileDescriptorVec> {  in from_pcb()  argument
360         return unsafe { (pcb.fds as usize as *mut FileDescriptorVec).as_mut() };  in from_pcb()
370         if fd < 0 || fd as usize > FileDescriptorVec::PROCESS_MAX_FD {  in validate_fd()