more-or-less working with new proc & user structs

[unix-history] / usr / src / sys / kern / sys_socket.c

/*
* Copyright (c) 1982, 1986, 1990 Regents of the University of California.
* All rights reserved.
*
* %sccs.include.redist.c%
*
*      @(#)sys_socket.c        7.9 (Berkeley) %G%
*/

#include "param.h"
#include "systm.h"
#include "user.h"
#include "file.h"
#include "mbuf.h"
#include "protosw.h"
#include "socket.h"
#include "socketvar.h"
#include "ioctl.h"
#include "uio.h"
#include "stat.h"

#include "../net/if.h"
#include "../net/route.h"

int     soo_read(), soo_write(), soo_ioctl(), soo_select(), soo_close();
struct  fileops socketops =
   { soo_read, soo_write, soo_ioctl, soo_select, soo_close };

/* ARGSUSED */
soo_read(fp, uio, cred)
       struct file *fp;
       struct uio *uio;
       struct ucred *cred;
{

       return (soreceive((struct socket *)fp->f_data, (struct mbuf **)0,
               uio, (struct mbuf **)0, (struct mbuf **)0, (int *)0));
}

/* ARGSUSED */
soo_write(fp, uio, cred)
       struct file *fp;
       struct uio *uio;
       struct ucred *cred;
{

       return (sosend((struct socket *)fp->f_data, (struct mbuf *)0,
               uio, (struct mbuf *)0, (struct mbuf *)0, 0));
}

soo_ioctl(fp, cmd, data, p)
       struct file *fp;
       int cmd;
       register caddr_t data;
       struct proc *p;
{
       register struct socket *so = (struct socket *)fp->f_data;

       switch (cmd) {

       case FIONBIO:
               if (*(int *)data)
                       so->so_state |= SS_NBIO;
               else
                       so->so_state &= ~SS_NBIO;
               return (0);

       case FIOASYNC:
               if (*(int *)data) {
                       so->so_state |= SS_ASYNC;
                       so->so_rcv.sb_flags |= SB_ASYNC;
                       so->so_snd.sb_flags |= SB_ASYNC;
               } else {
                       so->so_state &= ~SS_ASYNC;
                       so->so_rcv.sb_flags &= ~SB_ASYNC;
                       so->so_snd.sb_flags &= ~SB_ASYNC;
               }
               return (0);

       case FIONREAD:
               *(int *)data = so->so_rcv.sb_cc;
               return (0);

       case SIOCSPGRP:
               so->so_pgid = *(int *)data;
               return (0);

       case SIOCGPGRP:
               *(int *)data = so->so_pgid;
               return (0);

       case SIOCATMARK:
               *(int *)data = (so->so_state&SS_RCVATMARK) != 0;
               return (0);
       }
       /*
        * Interface/routing/protocol specific ioctls:
        * interface and routing ioctls should have a
        * different entry since a socket's unnecessary
        */
       if (IOCGROUP(cmd) == 'i')
               return (ifioctl(so, cmd, data, p));
       if (IOCGROUP(cmd) == 'r')
               return (rtioctl(cmd, data, p));
       return ((*so->so_proto->pr_usrreq)(so, PRU_CONTROL, 
           (struct mbuf *)cmd, (struct mbuf *)data, (struct mbuf *)0));
}

soo_select(fp, which, p)
       struct file *fp;
       int which;
       struct proc *p;
{
       register struct socket *so = (struct socket *)fp->f_data;
       register int s = splnet();

       switch (which) {

       case FREAD:
               if (soreadable(so)) {
                       splx(s);
                       return (1);
               }
               sbselqueue(&so->so_rcv, p);
               break;

       case FWRITE:
               if (sowriteable(so)) {
                       splx(s);
                       return (1);
               }
               sbselqueue(&so->so_snd, p);
               break;

       case 0:
               if (so->so_oobmark ||
                   (so->so_state & SS_RCVATMARK)) {
                       splx(s);
                       return (1);
               }
               sbselqueue(&so->so_rcv, p);
               break;
       }
       splx(s);
       return (0);
}

soo_stat(so, ub)
       register struct socket *so;
       register struct stat *ub;
{

       bzero((caddr_t)ub, sizeof (*ub));
       return ((*so->so_proto->pr_usrreq)(so, PRU_SENSE,
           (struct mbuf *)ub, (struct mbuf *)0, 
           (struct mbuf *)0));
}

soo_close(fp)
       struct file *fp;
{
       int error = 0;

       if (fp->f_data)
               error = soclose((struct socket *)fp->f_data);
       fp->f_data = 0;
       return (error);
}