378         if let Some(fds) = FileDescriptorVec::from_pcb(current_pcb()) {  in dup()
382                 if let Some(file) = &fds.fds[oldfd as usize] {  in dup()
413         if let Some(fds) = FileDescriptorVec::from_pcb(current_pcb()) {  in dup2()
422                 if let Some(file) = &fds.fds[oldfd as usize] {  in dup2()
423                     if fds.fds[newfd as usize].is_some() {  in dup2()
467                     if let Some(fds) = FileDescriptorVec::from_pcb(current_pcb()) {  in fcntl()
468                         if fds.fds[i as usize].is_none() {  in fcntl()
478                 if let Some(fds) = FileDescriptorVec::from_pcb(current_pcb()) {  in fcntl()
480                         if let Some(file) = &fds.fds[fd as usize] {  in fcntl()
492                 if let Some(fds) = FileDescriptorVec::from_pcb(current_pcb()) {  in fcntl()
494                         if let Some(file) = &mut fds.fds[fd as usize] {  in fcntl()
511                 if let Some(fds) = FileDescriptorVec::from_pcb(current_pcb()) {  in fcntl()
513                         if let Some(file) = &fds.fds[fd as usize] {  in fcntl()
523                 if let Some(fds) = FileDescriptorVec::from_pcb(current_pcb()) {  in fcntl()
525                         if let Some(file) = &mut fds.fds[fd as usize] {  in fcntl()
563         if let Some(fds) = FileDescriptorVec::from_pcb(current_pcb()) {  in ftruncate()
565                 if let Some(file) = &mut fds.fds[fd as usize] {  in ftruncate()