26 struct sock {  struct
27 	struct sock *next;  argument
28 	int fd;
29 	struct file *file;
30 	struct amsg rmsg, wmsg;		/* messages being sent/received */
31 	unsigned int wmax;		/* max bytes we're allowed to write */
32 	unsigned int rmax;		/* max bytes we're allowed to read */
33 	unsigned int rsize;		/* input bytes to read (DATA msg) */
34 	unsigned int wsize;		/* output bytes to write (DATA msg) */
35 	unsigned int rtodo;		/* input bytes not read yet */
36 	unsigned int wtodo;		/* output bytes not written yet */
41 	unsigned int rstate;		/* state of the read-end FSM */
68 	unsigned int sesrefs;		/* 1 if socket belongs to a session */  argument
71 struct sock *sock_new(int fd);  argument