4     arch::asm::current::current_pcb,
184         let r = current_pcb().alloc_fd(file, None).map(|fd| fd as usize);  in open()
196         return current_pcb().drop_fd(fd as i32).map(|_| 0);  in close()
208         let file: Option<&mut File> = current_pcb().get_file_mut_by_fd(fd);  in read()
226         let file: Option<&mut File> = current_pcb().get_file_mut_by_fd(fd);  in write()
244         let file: Option<&mut File> = current_pcb().get_file_mut_by_fd(fd);  in lseek()
317         let file: &mut File = match current_pcb().get_file_mut_by_fd(fd) {  in getdents()
378         if let Some(fds) = FileDescriptorVec::from_pcb(current_pcb()) {  in dup()
387                     let res = current_pcb().alloc_fd(*file_cp, None).map(|x| x as usize);  in dup()
413         if let Some(fds) = FileDescriptorVec::from_pcb(current_pcb()) {  in dup2()
425                         if let Err(_) = current_pcb().drop_fd(newfd) {  in dup2()
437                     let res = current_pcb()  in dup2()
467                     if let Some(fds) = FileDescriptorVec::from_pcb(current_pcb()) {  in fcntl()
478                 if let Some(fds) = FileDescriptorVec::from_pcb(current_pcb()) {  in fcntl()
492                 if let Some(fds) = FileDescriptorVec::from_pcb(current_pcb()) {  in fcntl()
511                 if let Some(fds) = FileDescriptorVec::from_pcb(current_pcb()) {  in fcntl()
523                 if let Some(fds) = FileDescriptorVec::from_pcb(current_pcb()) {  in fcntl()
563         if let Some(fds) = FileDescriptorVec::from_pcb(current_pcb()) {  in ftruncate()
575         let cur = current_pcb();  in do_fstat()