xv6-cs450/fd.h

struct fd {
  enum { FD_CLOSED, FD_NONE, FD_PIPE, FD_FILE } type;
  int ref; // reference count
  char readable;
  char writeable;
  struct pipe *pipe;
  struct inode *ip;
};

extern struct fd fds[NFD];
file descriptors pipes 2006-06-27 16:35:53 +02:00			`struct fd {`
open() 2006-07-29 11:35:02 +02:00			`enum { FD_CLOSED, FD_NONE, FD_PIPE, FD_FILE } type;`
more name cleanup 2006-07-16 04:04:58 +02:00			`int ref; // reference count`
file descriptors pipes 2006-06-27 16:35:53 +02:00			`char readable;`
			`char writeable;`
			`struct pipe *pipe;`
open() 2006-07-29 11:35:02 +02:00			`struct inode *ip;`
file descriptors pipes 2006-06-27 16:35:53 +02:00			`};`

			`extern struct fd fds[NFD];`