927595101c
this was causing filedesc work to be very painful. In order to make this work split out sigio definitions to thier own header (sigio.h) which is included from proc.h for the time being.
240 lines
6.2 KiB
C
240 lines
6.2 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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* $FreeBSD$
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*/
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#include "opt_mac.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/file.h>
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#include <sys/filedesc.h>
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#include <sys/mac.h>
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#include <sys/protosw.h>
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#include <sys/sigio.h>
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#include <sys/socket.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 <sys/uio.h>
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#include <sys/filedesc.h>
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#include <sys/ucred.h>
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#include <net/if.h>
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#include <net/route.h>
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struct fileops socketops = {
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soo_read, soo_write, soo_ioctl, soo_poll, soo_kqfilter,
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soo_stat, soo_close
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};
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/* ARGSUSED */
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int
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soo_read(fp, uio, active_cred, flags, td)
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struct file *fp;
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struct uio *uio;
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struct ucred *active_cred;
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struct thread *td;
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int flags;
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{
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struct socket *so = (struct socket *)fp->f_data;
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int error;
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mtx_lock(&Giant);
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#ifdef MAC
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error = mac_check_socket_receive(active_cred, so);
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if (error) {
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mtx_unlock(&Giant);
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return (error);
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}
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#endif
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error = so->so_proto->pr_usrreqs->pru_soreceive(so, 0, uio, 0, 0, 0);
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mtx_unlock(&Giant);
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return (error);
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}
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/* ARGSUSED */
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int
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soo_write(fp, uio, active_cred, flags, td)
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struct file *fp;
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struct uio *uio;
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struct ucred *active_cred;
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struct thread *td;
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int flags;
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{
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struct socket *so = (struct socket *)fp->f_data;
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int error;
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mtx_lock(&Giant);
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#ifdef MAC
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error = mac_check_socket_send(active_cred, so);
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if (error) {
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mtx_unlock(&Giant);
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return (error);
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}
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#endif
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error = so->so_proto->pr_usrreqs->pru_sosend(so, 0, uio, 0, 0, 0,
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uio->uio_td);
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mtx_unlock(&Giant);
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return (error);
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}
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int
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soo_ioctl(fp, cmd, data, active_cred, td)
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struct file *fp;
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u_long cmd;
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void *data;
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struct ucred *active_cred;
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struct thread *td;
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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 FIOSETOWN:
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return (fsetown(*(int *)data, &so->so_sigio));
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case FIOGETOWN:
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*(int *)data = fgetown(&so->so_sigio);
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return (0);
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case SIOCSPGRP:
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return (fsetown(-(*(int *)data), &so->so_sigio));
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case SIOCGPGRP:
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*(int *)data = -fgetown(&so->so_sigio);
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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, td));
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if (IOCGROUP(cmd) == 'r')
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return (rtioctl(cmd, data));
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return ((*so->so_proto->pr_usrreqs->pru_control)(so, cmd, data, 0, td));
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}
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int
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soo_poll(fp, events, active_cred, td)
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struct file *fp;
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int events;
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struct ucred *active_cred;
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struct thread *td;
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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_sopoll(so, events,
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fp->f_cred, td);
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}
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int
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soo_stat(fp, ub, active_cred, td)
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struct file *fp;
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struct stat *ub;
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struct ucred *active_cred;
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struct thread *td;
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{
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struct socket *so = (struct socket *)fp->f_data;
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bzero((caddr_t)ub, sizeof (*ub));
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ub->st_mode = S_IFSOCK;
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/*
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* If SS_CANTRCVMORE is set, but there's still data left in the
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* receive buffer, the socket is still readable.
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*/
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if ((so->so_state & SS_CANTRCVMORE) == 0 ||
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so->so_rcv.sb_cc != 0)
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ub->st_mode |= S_IRUSR | S_IRGRP | S_IROTH;
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if ((so->so_state & SS_CANTSENDMORE) == 0)
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ub->st_mode |= S_IWUSR | S_IWGRP | S_IWOTH;
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ub->st_size = so->so_rcv.sb_cc - so->so_rcv.sb_ctl;
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ub->st_uid = so->so_cred->cr_uid;
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ub->st_gid = so->so_cred->cr_gid;
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return ((*so->so_proto->pr_usrreqs->pru_sense)(so, ub));
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}
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/*
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* API socket close on file pointer. We call soclose() to close the
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* socket (including initiating closing protocols). soclose() will
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* sorele() the file reference but the actual socket will not go away
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* until the socket's ref count hits 0.
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*/
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/* ARGSUSED */
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int
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soo_close(fp, td)
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struct file *fp;
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struct thread *td;
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{
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int error = 0;
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struct socket *so;
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so = (struct socket *)fp->f_data;
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fp->f_ops = &badfileops;
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fp->f_data = 0;
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if (so)
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error = soclose(so);
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return (error);
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}
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