a29f300e80
This commit includes the following changes: 1) Old-style (pr_usrreq()) protocols are no longer supported, the compatibility glue for them is deleted, and the kernel will panic on boot if any are compiled in. 2) Certain protocol entry points are modified to take a process structure, so they they can easily tell whether or not it is possible to sleep, and also to access credentials. 3) SS_PRIV is no more, and with it goes the SO_PRIVSTATE setsockopt() call. Protocols should use the process pointer they are now passed. 4) The PF_LOCAL and PF_ROUTE families have been updated to use the new style, as has the `raw' skeleton family. 5) PF_LOCAL sockets now obey the process's umask when creating a socket in the filesystem. As a result, LINT is now broken. I'm hoping that some enterprising hacker with a bit more time will either make the broken bits work (should be easy for netipx) or dike them out.
178 lines
4.8 KiB
C
178 lines
4.8 KiB
C
/*
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* Copyright (c) 1982, 1986, 1990, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)sys_socket.c 8.1 (Berkeley) 6/10/93
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* $Id: sys_socket.c,v 1.12 1997/03/24 11:52:26 bde Exp $
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*/
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#include <sys/param.h>
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#include <sys/queue.h>
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#include <sys/systm.h>
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#include <sys/proc.h>
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#include <sys/fcntl.h>
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#include <sys/file.h>
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#include <sys/mbuf.h>
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#include <sys/protosw.h>
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#include <sys/socket.h>
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#include <sys/stat.h>
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#include <sys/socketvar.h>
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#include <sys/filio.h> /* XXX */
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#include <sys/sockio.h>
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#include <sys/stat.h>
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#include <net/if.h>
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#include <net/route.h>
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static int soo_read __P((struct file *fp, struct uio *uio,
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struct ucred *cred));
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static int soo_write __P((struct file *fp, struct uio *uio,
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struct ucred *cred));
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static int soo_close __P((struct file *fp, struct proc *p));
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struct fileops socketops =
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{ soo_read, soo_write, soo_ioctl, soo_select, soo_close };
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/* ARGSUSED */
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static int
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soo_read(fp, uio, cred)
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struct file *fp;
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struct uio *uio;
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struct ucred *cred;
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{
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struct socket *so = (struct socket *)fp->f_data;
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return so->so_proto->pr_usrreqs->pru_soreceive(so, 0, uio, 0, 0, 0);
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}
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/* ARGSUSED */
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static int
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soo_write(fp, uio, cred)
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struct file *fp;
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struct uio *uio;
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struct ucred *cred;
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{
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struct socket *so = (struct socket *)fp->f_data;
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return so->so_proto->pr_usrreqs->pru_sosend(so, 0, uio, 0, 0, 0);
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}
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int
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soo_ioctl(fp, cmd, data, p)
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struct file *fp;
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int cmd;
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register caddr_t data;
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struct proc *p;
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{
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register struct socket *so = (struct socket *)fp->f_data;
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switch (cmd) {
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case FIONBIO:
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if (*(int *)data)
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so->so_state |= SS_NBIO;
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else
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so->so_state &= ~SS_NBIO;
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return (0);
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case FIOASYNC:
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if (*(int *)data) {
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so->so_state |= SS_ASYNC;
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so->so_rcv.sb_flags |= SB_ASYNC;
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so->so_snd.sb_flags |= SB_ASYNC;
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} else {
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so->so_state &= ~SS_ASYNC;
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so->so_rcv.sb_flags &= ~SB_ASYNC;
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so->so_snd.sb_flags &= ~SB_ASYNC;
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}
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return (0);
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case FIONREAD:
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*(int *)data = so->so_rcv.sb_cc;
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return (0);
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case SIOCSPGRP:
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so->so_pgid = *(int *)data;
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return (0);
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case SIOCGPGRP:
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*(int *)data = so->so_pgid;
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return (0);
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case SIOCATMARK:
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*(int *)data = (so->so_state&SS_RCVATMARK) != 0;
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return (0);
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}
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/*
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* Interface/routing/protocol specific ioctls:
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* interface and routing ioctls should have a
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* different entry since a socket's unnecessary
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*/
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if (IOCGROUP(cmd) == 'i')
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return (ifioctl(so, cmd, data, p));
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if (IOCGROUP(cmd) == 'r')
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return (rtioctl(cmd, data, p));
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return ((*so->so_proto->pr_usrreqs->pru_control)(so, cmd, data, 0, p));
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}
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int
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soo_select(fp, which, p)
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struct file *fp;
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int which;
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struct proc *p;
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{
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struct socket *so = (struct socket *)fp->f_data;
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return so->so_proto->pr_usrreqs->pru_soselect(so, which, p);
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}
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int
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soo_stat(so, ub)
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register struct socket *so;
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register struct stat *ub;
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{
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bzero((caddr_t)ub, sizeof (*ub));
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ub->st_mode = S_IFSOCK;
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return ((*so->so_proto->pr_usrreqs->pru_sense)(so, ub));
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}
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/* ARGSUSED */
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static int
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soo_close(fp, p)
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struct file *fp;
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struct proc *p;
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{
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int error = 0;
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if (fp->f_data)
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error = soclose((struct socket *)fp->f_data);
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fp->f_data = 0;
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return (error);
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}
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