1304 lines
28 KiB
C
1304 lines
28 KiB
C
/*
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* Copyright (c) 1982, 1986, 1989, 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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* @(#)uipc_syscalls.c 8.4 (Berkeley) 2/21/94
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* $Id: uipc_syscalls.c,v 1.19 1996/08/24 03:35:13 peter Exp $
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*/
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#include "opt_ktrace.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/sysproto.h>
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#include <sys/filedesc.h>
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#include <sys/proc.h>
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#include <sys/file.h>
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#include <sys/buf.h>
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#include <sys/malloc.h>
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#include <sys/mbuf.h>
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#include <sys/protosw.h>
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#include <sys/stat.h>
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#include <sys/socket.h>
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#include <sys/socketvar.h>
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#include <sys/signalvar.h>
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#include <sys/un.h>
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#ifdef KTRACE
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#include <sys/ktrace.h>
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#endif
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extern int sendit __P((struct proc *p, int s, struct msghdr *mp, int flags,
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int *retsize));
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extern int recvit __P((struct proc *p, int s, struct msghdr *mp,
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caddr_t namelenp, int *retsize));
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static int accept1 __P((struct proc *p, struct accept_args *uap, int *retval,
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int compat));
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static int getsockname1 __P((struct proc *p, struct getsockname_args *uap,
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int *retval, int compat));
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static int getpeername1 __P((struct proc *p, struct getpeername_args *uap,
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int *retval, int compat));
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/*
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* System call interface to the socket abstraction.
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*/
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#if defined(COMPAT_43) || defined(COMPAT_SUNOS)
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#define COMPAT_OLDSOCK
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#endif
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extern struct fileops socketops;
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int
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socket(p, uap, retval)
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struct proc *p;
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register struct socket_args /* {
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int domain;
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int type;
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int protocol;
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} */ *uap;
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int *retval;
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{
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struct filedesc *fdp = p->p_fd;
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struct socket *so;
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struct file *fp;
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int fd, error;
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error = falloc(p, &fp, &fd);
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if (error)
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return (error);
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fp->f_flag = FREAD|FWRITE;
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fp->f_type = DTYPE_SOCKET;
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fp->f_ops = &socketops;
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error = socreate(uap->domain, &so, uap->type, uap->protocol, p);
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if (error) {
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fdp->fd_ofiles[fd] = 0;
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ffree(fp);
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} else {
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fp->f_data = (caddr_t)so;
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*retval = fd;
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}
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return (error);
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}
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/* ARGSUSED */
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int
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bind(p, uap, retval)
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struct proc *p;
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register struct bind_args /* {
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int s;
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caddr_t name;
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int namelen;
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} */ *uap;
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int *retval;
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{
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struct file *fp;
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struct mbuf *nam;
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int error;
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error = getsock(p->p_fd, uap->s, &fp);
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if (error)
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return (error);
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error = sockargs(&nam, uap->name, uap->namelen, MT_SONAME);
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if (error)
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return (error);
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error = sobind((struct socket *)fp->f_data, nam);
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m_freem(nam);
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return (error);
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}
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/* ARGSUSED */
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int
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listen(p, uap, retval)
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struct proc *p;
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register struct listen_args /* {
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int s;
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int backlog;
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} */ *uap;
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int *retval;
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{
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struct file *fp;
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int error;
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error = getsock(p->p_fd, uap->s, &fp);
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if (error)
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return (error);
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return (solisten((struct socket *)fp->f_data, uap->backlog));
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}
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static int
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accept1(p, uap, retval, compat)
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struct proc *p;
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register struct accept_args /* {
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int s;
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caddr_t name;
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int *anamelen;
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} */ *uap;
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int *retval;
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int compat;
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{
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struct file *fp;
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struct mbuf *nam;
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int namelen, error, s;
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struct socket *head, *so;
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short fflag; /* type must match fp->f_flag */
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if (uap->name) {
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error = copyin((caddr_t)uap->anamelen, (caddr_t)&namelen,
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sizeof (namelen));
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if(error)
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return (error);
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}
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error = getsock(p->p_fd, uap->s, &fp);
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if (error)
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return (error);
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s = splnet();
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head = (struct socket *)fp->f_data;
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if ((head->so_options & SO_ACCEPTCONN) == 0) {
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splx(s);
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return (EINVAL);
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}
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if ((head->so_state & SS_NBIO) && head->so_comp.tqh_first == NULL) {
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splx(s);
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return (EWOULDBLOCK);
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}
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while (head->so_comp.tqh_first == NULL && head->so_error == 0) {
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if (head->so_state & SS_CANTRCVMORE) {
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head->so_error = ECONNABORTED;
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break;
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}
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error = tsleep((caddr_t)&head->so_timeo, PSOCK | PCATCH,
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"accept", 0);
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if (error) {
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splx(s);
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return (error);
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}
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}
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if (head->so_error) {
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error = head->so_error;
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head->so_error = 0;
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splx(s);
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return (error);
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}
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fflag = fp->f_flag;
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error = falloc(p, &fp, retval);
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if (error) {
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splx(s);
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return (error);
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}
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so = head->so_comp.tqh_first;
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if (so == NULL)
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panic("accept: nothing queued");
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TAILQ_REMOVE(&head->so_comp, so, so_list);
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so->so_state &= ~SS_COMP;
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so->so_head = NULL;
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head->so_qlen--;
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fp->f_type = DTYPE_SOCKET;
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fp->f_flag = fflag;
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fp->f_ops = &socketops;
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fp->f_data = (caddr_t)so;
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nam = m_get(M_WAIT, MT_SONAME);
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(void) soaccept(so, nam);
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if (uap->name) {
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#ifdef COMPAT_OLDSOCK
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if (compat)
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mtod(nam, struct osockaddr *)->sa_family =
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mtod(nam, struct sockaddr *)->sa_family;
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#endif
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if (namelen > nam->m_len)
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namelen = nam->m_len;
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/* SHOULD COPY OUT A CHAIN HERE */
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error = copyout(mtod(nam, caddr_t), (caddr_t)uap->name,
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(u_int)namelen);
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if (!error)
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error = copyout((caddr_t)&namelen,
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(caddr_t)uap->anamelen, sizeof (*uap->anamelen));
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}
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m_freem(nam);
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splx(s);
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return (error);
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}
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int
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accept(p, uap, retval)
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struct proc *p;
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struct accept_args *uap;
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int *retval;
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{
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return (accept1(p, uap, retval, 0));
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}
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#ifdef COMPAT_OLDSOCK
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int
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oaccept(p, uap, retval)
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struct proc *p;
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struct accept_args *uap;
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int *retval;
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{
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return (accept1(p, uap, retval, 1));
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}
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#endif /* COMPAT_OLDSOCK */
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/* ARGSUSED */
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int
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connect(p, uap, retval)
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struct proc *p;
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register struct connect_args /* {
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int s;
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caddr_t name;
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int namelen;
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} */ *uap;
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int *retval;
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{
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struct file *fp;
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register struct socket *so;
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struct mbuf *nam;
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int error, s;
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error = getsock(p->p_fd, uap->s, &fp);
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if (error)
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return (error);
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so = (struct socket *)fp->f_data;
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if ((so->so_state & SS_NBIO) && (so->so_state & SS_ISCONNECTING))
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return (EALREADY);
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error = sockargs(&nam, uap->name, uap->namelen, MT_SONAME);
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if (error)
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return (error);
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error = soconnect(so, nam);
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if (error)
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goto bad;
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if ((so->so_state & SS_NBIO) && (so->so_state & SS_ISCONNECTING)) {
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m_freem(nam);
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return (EINPROGRESS);
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}
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s = splnet();
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while ((so->so_state & SS_ISCONNECTING) && so->so_error == 0) {
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error = tsleep((caddr_t)&so->so_timeo, PSOCK | PCATCH,
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"connec", 0);
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if (error)
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break;
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}
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if (error == 0) {
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error = so->so_error;
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so->so_error = 0;
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}
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splx(s);
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bad:
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so->so_state &= ~SS_ISCONNECTING;
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m_freem(nam);
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if (error == ERESTART)
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error = EINTR;
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return (error);
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}
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int
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socketpair(p, uap, retval)
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struct proc *p;
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register struct socketpair_args /* {
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int domain;
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int type;
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int protocol;
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int *rsv;
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} */ *uap;
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int retval[];
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{
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register struct filedesc *fdp = p->p_fd;
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struct file *fp1, *fp2;
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struct socket *so1, *so2;
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int fd, error, sv[2];
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error = socreate(uap->domain, &so1, uap->type, uap->protocol, p);
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if (error)
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return (error);
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error = socreate(uap->domain, &so2, uap->type, uap->protocol, p);
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if (error)
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goto free1;
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error = falloc(p, &fp1, &fd);
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if (error)
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goto free2;
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sv[0] = fd;
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fp1->f_flag = FREAD|FWRITE;
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fp1->f_type = DTYPE_SOCKET;
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fp1->f_ops = &socketops;
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fp1->f_data = (caddr_t)so1;
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error = falloc(p, &fp2, &fd);
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if (error)
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goto free3;
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fp2->f_flag = FREAD|FWRITE;
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fp2->f_type = DTYPE_SOCKET;
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fp2->f_ops = &socketops;
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fp2->f_data = (caddr_t)so2;
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sv[1] = fd;
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error = soconnect2(so1, so2);
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if (error)
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goto free4;
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if (uap->type == SOCK_DGRAM) {
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/*
|
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* Datagram socket connection is asymmetric.
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*/
|
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error = soconnect2(so2, so1);
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if (error)
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goto free4;
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}
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error = copyout((caddr_t)sv, (caddr_t)uap->rsv, 2 * sizeof (int));
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#if 0 /* old pipe(2) syscall compatability, unused these days */
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retval[0] = sv[0]; /* XXX ??? */
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retval[1] = sv[1]; /* XXX ??? */
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#endif
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return (error);
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free4:
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ffree(fp2);
|
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fdp->fd_ofiles[sv[1]] = 0;
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free3:
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ffree(fp1);
|
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fdp->fd_ofiles[sv[0]] = 0;
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free2:
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(void)soclose(so2);
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free1:
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(void)soclose(so1);
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return (error);
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}
|
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|
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int
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sendit(p, s, mp, flags, retsize)
|
|
register struct proc *p;
|
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int s;
|
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register struct msghdr *mp;
|
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int flags, *retsize;
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{
|
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struct file *fp;
|
|
struct uio auio;
|
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register struct iovec *iov;
|
|
register int i;
|
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struct mbuf *to, *control;
|
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int len, error;
|
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#ifdef KTRACE
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struct iovec *ktriov = NULL;
|
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#endif
|
|
|
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error = getsock(p->p_fd, s, &fp);
|
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if (error)
|
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return (error);
|
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auio.uio_iov = mp->msg_iov;
|
|
auio.uio_iovcnt = mp->msg_iovlen;
|
|
auio.uio_segflg = UIO_USERSPACE;
|
|
auio.uio_rw = UIO_WRITE;
|
|
auio.uio_procp = p;
|
|
auio.uio_offset = 0; /* XXX */
|
|
auio.uio_resid = 0;
|
|
iov = mp->msg_iov;
|
|
for (i = 0; i < mp->msg_iovlen; i++, iov++) {
|
|
if ((auio.uio_resid += iov->iov_len) < 0)
|
|
return (EINVAL);
|
|
}
|
|
if (mp->msg_name) {
|
|
error = sockargs(&to, mp->msg_name, mp->msg_namelen, MT_SONAME);
|
|
if (error)
|
|
return (error);
|
|
} else
|
|
to = 0;
|
|
if (mp->msg_control) {
|
|
if (mp->msg_controllen < sizeof(struct cmsghdr)
|
|
#ifdef COMPAT_OLDSOCK
|
|
&& mp->msg_flags != MSG_COMPAT
|
|
#endif
|
|
) {
|
|
error = EINVAL;
|
|
goto bad;
|
|
}
|
|
error = sockargs(&control, mp->msg_control,
|
|
mp->msg_controllen, MT_CONTROL);
|
|
if (error)
|
|
goto bad;
|
|
#ifdef COMPAT_OLDSOCK
|
|
if (mp->msg_flags == MSG_COMPAT) {
|
|
register struct cmsghdr *cm;
|
|
|
|
M_PREPEND(control, sizeof(*cm), M_WAIT);
|
|
if (control == 0) {
|
|
error = ENOBUFS;
|
|
goto bad;
|
|
} else {
|
|
cm = mtod(control, struct cmsghdr *);
|
|
cm->cmsg_len = control->m_len;
|
|
cm->cmsg_level = SOL_SOCKET;
|
|
cm->cmsg_type = SCM_RIGHTS;
|
|
}
|
|
}
|
|
#endif
|
|
} else
|
|
control = 0;
|
|
#ifdef KTRACE
|
|
if (KTRPOINT(p, KTR_GENIO)) {
|
|
int iovlen = auio.uio_iovcnt * sizeof (struct iovec);
|
|
|
|
MALLOC(ktriov, struct iovec *, iovlen, M_TEMP, M_WAITOK);
|
|
bcopy((caddr_t)auio.uio_iov, (caddr_t)ktriov, iovlen);
|
|
}
|
|
#endif
|
|
len = auio.uio_resid;
|
|
error = sosend((struct socket *)fp->f_data, to, &auio,
|
|
(struct mbuf *)0, control, flags);
|
|
if (error) {
|
|
if (auio.uio_resid != len && (error == ERESTART ||
|
|
error == EINTR || error == EWOULDBLOCK))
|
|
error = 0;
|
|
if (error == EPIPE)
|
|
psignal(p, SIGPIPE);
|
|
}
|
|
if (error == 0)
|
|
*retsize = len - auio.uio_resid;
|
|
#ifdef KTRACE
|
|
if (ktriov != NULL) {
|
|
if (error == 0)
|
|
ktrgenio(p->p_tracep, s, UIO_WRITE,
|
|
ktriov, *retsize, error);
|
|
FREE(ktriov, M_TEMP);
|
|
}
|
|
#endif
|
|
bad:
|
|
if (to)
|
|
m_freem(to);
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
sendto(p, uap, retval)
|
|
struct proc *p;
|
|
register struct sendto_args /* {
|
|
int s;
|
|
caddr_t buf;
|
|
size_t len;
|
|
int flags;
|
|
caddr_t to;
|
|
int tolen;
|
|
} */ *uap;
|
|
int *retval;
|
|
{
|
|
struct msghdr msg;
|
|
struct iovec aiov;
|
|
|
|
msg.msg_name = uap->to;
|
|
msg.msg_namelen = uap->tolen;
|
|
msg.msg_iov = &aiov;
|
|
msg.msg_iovlen = 1;
|
|
msg.msg_control = 0;
|
|
#ifdef COMPAT_OLDSOCK
|
|
msg.msg_flags = 0;
|
|
#endif
|
|
aiov.iov_base = uap->buf;
|
|
aiov.iov_len = uap->len;
|
|
return (sendit(p, uap->s, &msg, uap->flags, retval));
|
|
}
|
|
|
|
#ifdef COMPAT_OLDSOCK
|
|
int
|
|
osend(p, uap, retval)
|
|
struct proc *p;
|
|
register struct osend_args /* {
|
|
int s;
|
|
caddr_t buf;
|
|
int len;
|
|
int flags;
|
|
} */ *uap;
|
|
int *retval;
|
|
{
|
|
struct msghdr msg;
|
|
struct iovec aiov;
|
|
|
|
msg.msg_name = 0;
|
|
msg.msg_namelen = 0;
|
|
msg.msg_iov = &aiov;
|
|
msg.msg_iovlen = 1;
|
|
aiov.iov_base = uap->buf;
|
|
aiov.iov_len = uap->len;
|
|
msg.msg_control = 0;
|
|
msg.msg_flags = 0;
|
|
return (sendit(p, uap->s, &msg, uap->flags, retval));
|
|
}
|
|
|
|
int
|
|
osendmsg(p, uap, retval)
|
|
struct proc *p;
|
|
register struct osendmsg_args /* {
|
|
int s;
|
|
caddr_t msg;
|
|
int flags;
|
|
} */ *uap;
|
|
int *retval;
|
|
{
|
|
struct msghdr msg;
|
|
struct iovec aiov[UIO_SMALLIOV], *iov;
|
|
int error;
|
|
|
|
error = copyin(uap->msg, (caddr_t)&msg, sizeof (struct omsghdr));
|
|
if (error)
|
|
return (error);
|
|
if ((u_int)msg.msg_iovlen >= UIO_SMALLIOV) {
|
|
if ((u_int)msg.msg_iovlen >= UIO_MAXIOV)
|
|
return (EMSGSIZE);
|
|
MALLOC(iov, struct iovec *,
|
|
sizeof(struct iovec) * (u_int)msg.msg_iovlen, M_IOV,
|
|
M_WAITOK);
|
|
} else
|
|
iov = aiov;
|
|
error = copyin((caddr_t)msg.msg_iov, (caddr_t)iov,
|
|
(unsigned)(msg.msg_iovlen * sizeof (struct iovec)));
|
|
if (error)
|
|
goto done;
|
|
msg.msg_flags = MSG_COMPAT;
|
|
msg.msg_iov = iov;
|
|
error = sendit(p, uap->s, &msg, uap->flags, retval);
|
|
done:
|
|
if (iov != aiov)
|
|
FREE(iov, M_IOV);
|
|
return (error);
|
|
}
|
|
#endif
|
|
|
|
int
|
|
sendmsg(p, uap, retval)
|
|
struct proc *p;
|
|
register struct sendmsg_args /* {
|
|
int s;
|
|
caddr_t msg;
|
|
int flags;
|
|
} */ *uap;
|
|
int *retval;
|
|
{
|
|
struct msghdr msg;
|
|
struct iovec aiov[UIO_SMALLIOV], *iov;
|
|
int error;
|
|
|
|
error = copyin(uap->msg, (caddr_t)&msg, sizeof (msg));
|
|
if (error)
|
|
return (error);
|
|
if ((u_int)msg.msg_iovlen >= UIO_SMALLIOV) {
|
|
if ((u_int)msg.msg_iovlen >= UIO_MAXIOV)
|
|
return (EMSGSIZE);
|
|
MALLOC(iov, struct iovec *,
|
|
sizeof(struct iovec) * (u_int)msg.msg_iovlen, M_IOV,
|
|
M_WAITOK);
|
|
} else
|
|
iov = aiov;
|
|
if (msg.msg_iovlen &&
|
|
(error = copyin((caddr_t)msg.msg_iov, (caddr_t)iov,
|
|
(unsigned)(msg.msg_iovlen * sizeof (struct iovec)))))
|
|
goto done;
|
|
msg.msg_iov = iov;
|
|
#ifdef COMPAT_OLDSOCK
|
|
msg.msg_flags = 0;
|
|
#endif
|
|
error = sendit(p, uap->s, &msg, uap->flags, retval);
|
|
done:
|
|
if (iov != aiov)
|
|
FREE(iov, M_IOV);
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
recvit(p, s, mp, namelenp, retsize)
|
|
register struct proc *p;
|
|
int s;
|
|
register struct msghdr *mp;
|
|
caddr_t namelenp;
|
|
int *retsize;
|
|
{
|
|
struct file *fp;
|
|
struct uio auio;
|
|
register struct iovec *iov;
|
|
register int i;
|
|
int len, error;
|
|
struct mbuf *m, *from = 0, *control = 0;
|
|
caddr_t ctlbuf;
|
|
#ifdef KTRACE
|
|
struct iovec *ktriov = NULL;
|
|
#endif
|
|
|
|
error = getsock(p->p_fd, s, &fp);
|
|
if (error)
|
|
return (error);
|
|
auio.uio_iov = mp->msg_iov;
|
|
auio.uio_iovcnt = mp->msg_iovlen;
|
|
auio.uio_segflg = UIO_USERSPACE;
|
|
auio.uio_rw = UIO_READ;
|
|
auio.uio_procp = p;
|
|
auio.uio_offset = 0; /* XXX */
|
|
auio.uio_resid = 0;
|
|
iov = mp->msg_iov;
|
|
for (i = 0; i < mp->msg_iovlen; i++, iov++) {
|
|
if ((auio.uio_resid += iov->iov_len) < 0)
|
|
return (EINVAL);
|
|
}
|
|
#ifdef KTRACE
|
|
if (KTRPOINT(p, KTR_GENIO)) {
|
|
int iovlen = auio.uio_iovcnt * sizeof (struct iovec);
|
|
|
|
MALLOC(ktriov, struct iovec *, iovlen, M_TEMP, M_WAITOK);
|
|
bcopy((caddr_t)auio.uio_iov, (caddr_t)ktriov, iovlen);
|
|
}
|
|
#endif
|
|
len = auio.uio_resid;
|
|
error = soreceive((struct socket *)fp->f_data, &from, &auio,
|
|
(struct mbuf **)0, mp->msg_control ? &control : (struct mbuf **)0,
|
|
&mp->msg_flags);
|
|
if (error) {
|
|
if (auio.uio_resid != len && (error == ERESTART ||
|
|
error == EINTR || error == EWOULDBLOCK))
|
|
error = 0;
|
|
}
|
|
#ifdef KTRACE
|
|
if (ktriov != NULL) {
|
|
if (error == 0)
|
|
ktrgenio(p->p_tracep, s, UIO_READ,
|
|
ktriov, len - auio.uio_resid, error);
|
|
FREE(ktriov, M_TEMP);
|
|
}
|
|
#endif
|
|
if (error)
|
|
goto out;
|
|
*retsize = len - auio.uio_resid;
|
|
if (mp->msg_name) {
|
|
len = mp->msg_namelen;
|
|
if (len <= 0 || from == 0)
|
|
len = 0;
|
|
else {
|
|
#ifdef COMPAT_OLDSOCK
|
|
if (mp->msg_flags & MSG_COMPAT)
|
|
mtod(from, struct osockaddr *)->sa_family =
|
|
mtod(from, struct sockaddr *)->sa_family;
|
|
#endif
|
|
if (len > from->m_len)
|
|
len = from->m_len;
|
|
/* else if len < from->m_len ??? */
|
|
error = copyout(mtod(from, caddr_t),
|
|
(caddr_t)mp->msg_name, (unsigned)len);
|
|
if (error)
|
|
goto out;
|
|
}
|
|
mp->msg_namelen = len;
|
|
if (namelenp &&
|
|
(error = copyout((caddr_t)&len, namelenp, sizeof (int)))) {
|
|
#ifdef COMPAT_OLDSOCK
|
|
if (mp->msg_flags & MSG_COMPAT)
|
|
error = 0; /* old recvfrom didn't check */
|
|
else
|
|
#endif
|
|
goto out;
|
|
}
|
|
}
|
|
if (mp->msg_control) {
|
|
#ifdef COMPAT_OLDSOCK
|
|
/*
|
|
* We assume that old recvmsg calls won't receive access
|
|
* rights and other control info, esp. as control info
|
|
* is always optional and those options didn't exist in 4.3.
|
|
* If we receive rights, trim the cmsghdr; anything else
|
|
* is tossed.
|
|
*/
|
|
if (control && mp->msg_flags & MSG_COMPAT) {
|
|
if (mtod(control, struct cmsghdr *)->cmsg_level !=
|
|
SOL_SOCKET ||
|
|
mtod(control, struct cmsghdr *)->cmsg_type !=
|
|
SCM_RIGHTS) {
|
|
mp->msg_controllen = 0;
|
|
goto out;
|
|
}
|
|
control->m_len -= sizeof (struct cmsghdr);
|
|
control->m_data += sizeof (struct cmsghdr);
|
|
}
|
|
#endif
|
|
len = mp->msg_controllen;
|
|
m = control;
|
|
mp->msg_controllen = 0;
|
|
ctlbuf = (caddr_t) mp->msg_control;
|
|
|
|
while (m && len > 0) {
|
|
unsigned int tocopy;
|
|
|
|
if (len >= m->m_len)
|
|
tocopy = m->m_len;
|
|
else {
|
|
mp->msg_flags |= MSG_CTRUNC;
|
|
tocopy = len;
|
|
}
|
|
|
|
if (error = copyout((caddr_t)mtod(m, caddr_t),
|
|
ctlbuf, tocopy))
|
|
goto out;
|
|
|
|
ctlbuf += tocopy;
|
|
len -= tocopy;
|
|
m = m->m_next;
|
|
}
|
|
mp->msg_controllen = ctlbuf - mp->msg_control;
|
|
}
|
|
out:
|
|
if (from)
|
|
m_freem(from);
|
|
if (control)
|
|
m_freem(control);
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
recvfrom(p, uap, retval)
|
|
struct proc *p;
|
|
register struct recvfrom_args /* {
|
|
int s;
|
|
caddr_t buf;
|
|
size_t len;
|
|
int flags;
|
|
caddr_t from;
|
|
int *fromlenaddr;
|
|
} */ *uap;
|
|
int *retval;
|
|
{
|
|
struct msghdr msg;
|
|
struct iovec aiov;
|
|
int error;
|
|
|
|
if (uap->fromlenaddr) {
|
|
error = copyin((caddr_t)uap->fromlenaddr,
|
|
(caddr_t)&msg.msg_namelen, sizeof (msg.msg_namelen));
|
|
if (error)
|
|
return (error);
|
|
} else
|
|
msg.msg_namelen = 0;
|
|
msg.msg_name = uap->from;
|
|
msg.msg_iov = &aiov;
|
|
msg.msg_iovlen = 1;
|
|
aiov.iov_base = uap->buf;
|
|
aiov.iov_len = uap->len;
|
|
msg.msg_control = 0;
|
|
msg.msg_flags = uap->flags;
|
|
return (recvit(p, uap->s, &msg, (caddr_t)uap->fromlenaddr, retval));
|
|
}
|
|
|
|
#ifdef COMPAT_OLDSOCK
|
|
int
|
|
orecvfrom(p, uap, retval)
|
|
struct proc *p;
|
|
struct recvfrom_args *uap;
|
|
int *retval;
|
|
{
|
|
|
|
uap->flags |= MSG_COMPAT;
|
|
return (recvfrom(p, uap, retval));
|
|
}
|
|
#endif
|
|
|
|
|
|
#ifdef COMPAT_OLDSOCK
|
|
int
|
|
orecv(p, uap, retval)
|
|
struct proc *p;
|
|
register struct orecv_args /* {
|
|
int s;
|
|
caddr_t buf;
|
|
int len;
|
|
int flags;
|
|
} */ *uap;
|
|
int *retval;
|
|
{
|
|
struct msghdr msg;
|
|
struct iovec aiov;
|
|
|
|
msg.msg_name = 0;
|
|
msg.msg_namelen = 0;
|
|
msg.msg_iov = &aiov;
|
|
msg.msg_iovlen = 1;
|
|
aiov.iov_base = uap->buf;
|
|
aiov.iov_len = uap->len;
|
|
msg.msg_control = 0;
|
|
msg.msg_flags = uap->flags;
|
|
return (recvit(p, uap->s, &msg, (caddr_t)0, retval));
|
|
}
|
|
|
|
/*
|
|
* Old recvmsg. This code takes advantage of the fact that the old msghdr
|
|
* overlays the new one, missing only the flags, and with the (old) access
|
|
* rights where the control fields are now.
|
|
*/
|
|
int
|
|
orecvmsg(p, uap, retval)
|
|
struct proc *p;
|
|
register struct orecvmsg_args /* {
|
|
int s;
|
|
struct omsghdr *msg;
|
|
int flags;
|
|
} */ *uap;
|
|
int *retval;
|
|
{
|
|
struct msghdr msg;
|
|
struct iovec aiov[UIO_SMALLIOV], *iov;
|
|
int error;
|
|
|
|
error = copyin((caddr_t)uap->msg, (caddr_t)&msg,
|
|
sizeof (struct omsghdr));
|
|
if (error)
|
|
return (error);
|
|
if ((u_int)msg.msg_iovlen >= UIO_SMALLIOV) {
|
|
if ((u_int)msg.msg_iovlen >= UIO_MAXIOV)
|
|
return (EMSGSIZE);
|
|
MALLOC(iov, struct iovec *,
|
|
sizeof(struct iovec) * (u_int)msg.msg_iovlen, M_IOV,
|
|
M_WAITOK);
|
|
} else
|
|
iov = aiov;
|
|
msg.msg_flags = uap->flags | MSG_COMPAT;
|
|
error = copyin((caddr_t)msg.msg_iov, (caddr_t)iov,
|
|
(unsigned)(msg.msg_iovlen * sizeof (struct iovec)));
|
|
if (error)
|
|
goto done;
|
|
msg.msg_iov = iov;
|
|
error = recvit(p, uap->s, &msg, (caddr_t)&uap->msg->msg_namelen, retval);
|
|
|
|
if (msg.msg_controllen && error == 0)
|
|
error = copyout((caddr_t)&msg.msg_controllen,
|
|
(caddr_t)&uap->msg->msg_accrightslen, sizeof (int));
|
|
done:
|
|
if (iov != aiov)
|
|
FREE(iov, M_IOV);
|
|
return (error);
|
|
}
|
|
#endif
|
|
|
|
int
|
|
recvmsg(p, uap, retval)
|
|
struct proc *p;
|
|
register struct recvmsg_args /* {
|
|
int s;
|
|
struct msghdr *msg;
|
|
int flags;
|
|
} */ *uap;
|
|
int *retval;
|
|
{
|
|
struct msghdr msg;
|
|
struct iovec aiov[UIO_SMALLIOV], *uiov, *iov;
|
|
register int error;
|
|
|
|
error = copyin((caddr_t)uap->msg, (caddr_t)&msg, sizeof (msg));
|
|
if (error)
|
|
return (error);
|
|
if ((u_int)msg.msg_iovlen >= UIO_SMALLIOV) {
|
|
if ((u_int)msg.msg_iovlen >= UIO_MAXIOV)
|
|
return (EMSGSIZE);
|
|
MALLOC(iov, struct iovec *,
|
|
sizeof(struct iovec) * (u_int)msg.msg_iovlen, M_IOV,
|
|
M_WAITOK);
|
|
} else
|
|
iov = aiov;
|
|
#ifdef COMPAT_OLDSOCK
|
|
msg.msg_flags = uap->flags &~ MSG_COMPAT;
|
|
#else
|
|
msg.msg_flags = uap->flags;
|
|
#endif
|
|
uiov = msg.msg_iov;
|
|
msg.msg_iov = iov;
|
|
error = copyin((caddr_t)uiov, (caddr_t)iov,
|
|
(unsigned)(msg.msg_iovlen * sizeof (struct iovec)));
|
|
if (error)
|
|
goto done;
|
|
error = recvit(p, uap->s, &msg, (caddr_t)0, retval);
|
|
if (!error) {
|
|
msg.msg_iov = uiov;
|
|
error = copyout((caddr_t)&msg, (caddr_t)uap->msg, sizeof(msg));
|
|
}
|
|
done:
|
|
if (iov != aiov)
|
|
FREE(iov, M_IOV);
|
|
return (error);
|
|
}
|
|
|
|
/* ARGSUSED */
|
|
int
|
|
shutdown(p, uap, retval)
|
|
struct proc *p;
|
|
register struct shutdown_args /* {
|
|
int s;
|
|
int how;
|
|
} */ *uap;
|
|
int *retval;
|
|
{
|
|
struct file *fp;
|
|
int error;
|
|
|
|
error = getsock(p->p_fd, uap->s, &fp);
|
|
if (error)
|
|
return (error);
|
|
return (soshutdown((struct socket *)fp->f_data, uap->how));
|
|
}
|
|
|
|
/* ARGSUSED */
|
|
int
|
|
setsockopt(p, uap, retval)
|
|
struct proc *p;
|
|
register struct setsockopt_args /* {
|
|
int s;
|
|
int level;
|
|
int name;
|
|
caddr_t val;
|
|
int valsize;
|
|
} */ *uap;
|
|
int *retval;
|
|
{
|
|
struct file *fp;
|
|
struct mbuf *m = NULL;
|
|
int error;
|
|
|
|
error = getsock(p->p_fd, uap->s, &fp);
|
|
if (error)
|
|
return (error);
|
|
if (uap->valsize > MLEN)
|
|
return (EINVAL);
|
|
if (uap->val) {
|
|
m = m_get(M_WAIT, MT_SOOPTS);
|
|
if (m == NULL)
|
|
return (ENOBUFS);
|
|
error = copyin(uap->val, mtod(m, caddr_t), (u_int)uap->valsize);
|
|
if (error) {
|
|
(void) m_free(m);
|
|
return (error);
|
|
}
|
|
m->m_len = uap->valsize;
|
|
}
|
|
return (sosetopt((struct socket *)fp->f_data, uap->level,
|
|
uap->name, m));
|
|
}
|
|
|
|
/* ARGSUSED */
|
|
int
|
|
getsockopt(p, uap, retval)
|
|
struct proc *p;
|
|
register struct getsockopt_args /* {
|
|
int s;
|
|
int level;
|
|
int name;
|
|
caddr_t val;
|
|
int *avalsize;
|
|
} */ *uap;
|
|
int *retval;
|
|
{
|
|
struct file *fp;
|
|
struct mbuf *m = NULL, *m0;
|
|
int op, i, valsize, error;
|
|
|
|
error = getsock(p->p_fd, uap->s, &fp);
|
|
if (error)
|
|
return (error);
|
|
if (uap->val) {
|
|
error = copyin((caddr_t)uap->avalsize, (caddr_t)&valsize,
|
|
sizeof (valsize));
|
|
if (error)
|
|
return (error);
|
|
} else
|
|
valsize = 0;
|
|
if ((error = sogetopt((struct socket *)fp->f_data, uap->level,
|
|
uap->name, &m)) == 0 && uap->val && valsize && m != NULL) {
|
|
op = 0;
|
|
while (m && !error && op < valsize) {
|
|
i = min(m->m_len, (valsize - op));
|
|
error = copyout(mtod(m, caddr_t), uap->val, (u_int)i);
|
|
op += i;
|
|
uap->val += i;
|
|
m0 = m;
|
|
MFREE(m0,m);
|
|
}
|
|
valsize = op;
|
|
if (error == 0)
|
|
error = copyout((caddr_t)&valsize,
|
|
(caddr_t)uap->avalsize, sizeof (valsize));
|
|
}
|
|
if (m != NULL)
|
|
(void) m_free(m);
|
|
return (error);
|
|
}
|
|
|
|
#ifdef OLD_PIPE
|
|
/* ARGSUSED */
|
|
int
|
|
pipe(p, uap, retval)
|
|
struct proc *p;
|
|
struct pipe_args /* {
|
|
int dummy;
|
|
} */ *uap;
|
|
int retval[];
|
|
{
|
|
register struct filedesc *fdp = p->p_fd;
|
|
struct file *rf, *wf;
|
|
struct socket *rso, *wso;
|
|
int fd, error;
|
|
|
|
error = socreate(AF_UNIX, &rso, SOCK_STREAM, 0, p);
|
|
if (error)
|
|
return (error);
|
|
error = socreate(AF_UNIX, &wso, SOCK_STREAM, 0, p);
|
|
if (error)
|
|
goto free1;
|
|
error = falloc(p, &rf, &fd);
|
|
if (error)
|
|
goto free2;
|
|
retval[0] = fd;
|
|
rf->f_flag = FREAD | FWRITE;
|
|
rf->f_type = DTYPE_SOCKET;
|
|
rf->f_ops = &socketops;
|
|
rf->f_data = (caddr_t)rso;
|
|
error = falloc(p, &wf, &fd);
|
|
if (error)
|
|
goto free3;
|
|
wf->f_flag = FREAD | FWRITE;
|
|
wf->f_type = DTYPE_SOCKET;
|
|
wf->f_ops = &socketops;
|
|
wf->f_data = (caddr_t)wso;
|
|
retval[1] = fd;
|
|
error = unp_connect2(wso, rso);
|
|
if (error)
|
|
goto free4;
|
|
return (0);
|
|
free4:
|
|
ffree(wf);
|
|
fdp->fd_ofiles[retval[1]] = 0;
|
|
free3:
|
|
ffree(rf);
|
|
fdp->fd_ofiles[retval[0]] = 0;
|
|
free2:
|
|
(void)soclose(wso);
|
|
free1:
|
|
(void)soclose(rso);
|
|
return (error);
|
|
}
|
|
#endif
|
|
/*
|
|
* Get socket name.
|
|
*/
|
|
/* ARGSUSED */
|
|
static int
|
|
getsockname1(p, uap, retval, compat)
|
|
struct proc *p;
|
|
register struct getsockname_args /* {
|
|
int fdes;
|
|
caddr_t asa;
|
|
int *alen;
|
|
} */ *uap;
|
|
int *retval;
|
|
int compat;
|
|
{
|
|
struct file *fp;
|
|
register struct socket *so;
|
|
struct mbuf *m;
|
|
int len, error;
|
|
|
|
error = getsock(p->p_fd, uap->fdes, &fp);
|
|
if (error)
|
|
return (error);
|
|
error = copyin((caddr_t)uap->alen, (caddr_t)&len, sizeof (len));
|
|
if (error)
|
|
return (error);
|
|
so = (struct socket *)fp->f_data;
|
|
m = m_getclr(M_WAIT, MT_SONAME);
|
|
if (m == NULL)
|
|
return (ENOBUFS);
|
|
error = (*so->so_proto->pr_usrreqs->pru_sockaddr)(so, m);
|
|
if (error)
|
|
goto bad;
|
|
if (len > m->m_len)
|
|
len = m->m_len;
|
|
#ifdef COMPAT_OLDSOCK
|
|
if (compat)
|
|
mtod(m, struct osockaddr *)->sa_family =
|
|
mtod(m, struct sockaddr *)->sa_family;
|
|
#endif
|
|
error = copyout(mtod(m, caddr_t), (caddr_t)uap->asa, (u_int)len);
|
|
if (error == 0)
|
|
error = copyout((caddr_t)&len, (caddr_t)uap->alen,
|
|
sizeof (len));
|
|
bad:
|
|
m_freem(m);
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
getsockname(p, uap, retval)
|
|
struct proc *p;
|
|
struct getsockname_args *uap;
|
|
int *retval;
|
|
{
|
|
|
|
return (getsockname1(p, uap, retval, 0));
|
|
}
|
|
|
|
#ifdef COMPAT_OLDSOCK
|
|
int
|
|
ogetsockname(p, uap, retval)
|
|
struct proc *p;
|
|
struct getsockname_args *uap;
|
|
int *retval;
|
|
{
|
|
|
|
return (getsockname1(p, uap, retval, 1));
|
|
}
|
|
#endif /* COMPAT_OLDSOCK */
|
|
|
|
/*
|
|
* Get name of peer for connected socket.
|
|
*/
|
|
/* ARGSUSED */
|
|
static int
|
|
getpeername1(p, uap, retval, compat)
|
|
struct proc *p;
|
|
register struct getpeername_args /* {
|
|
int fdes;
|
|
caddr_t asa;
|
|
int *alen;
|
|
} */ *uap;
|
|
int *retval;
|
|
int compat;
|
|
{
|
|
struct file *fp;
|
|
register struct socket *so;
|
|
struct mbuf *m;
|
|
int len, error;
|
|
|
|
error = getsock(p->p_fd, uap->fdes, &fp);
|
|
if (error)
|
|
return (error);
|
|
so = (struct socket *)fp->f_data;
|
|
if ((so->so_state & (SS_ISCONNECTED|SS_ISCONFIRMING)) == 0)
|
|
return (ENOTCONN);
|
|
error = copyin((caddr_t)uap->alen, (caddr_t)&len, sizeof (len));
|
|
if (error)
|
|
return (error);
|
|
m = m_getclr(M_WAIT, MT_SONAME);
|
|
if (m == NULL)
|
|
return (ENOBUFS);
|
|
error = (*so->so_proto->pr_usrreqs->pru_peeraddr)(so, m);
|
|
if (error)
|
|
goto bad;
|
|
if (len > m->m_len)
|
|
len = m->m_len;
|
|
#ifdef COMPAT_OLDSOCK
|
|
if (compat)
|
|
mtod(m, struct osockaddr *)->sa_family =
|
|
mtod(m, struct sockaddr *)->sa_family;
|
|
#endif
|
|
error = copyout(mtod(m, caddr_t), (caddr_t)uap->asa, (u_int)len);
|
|
if (error)
|
|
goto bad;
|
|
error = copyout((caddr_t)&len, (caddr_t)uap->alen, sizeof (len));
|
|
bad:
|
|
m_freem(m);
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
getpeername(p, uap, retval)
|
|
struct proc *p;
|
|
struct getpeername_args *uap;
|
|
int *retval;
|
|
{
|
|
|
|
return (getpeername1(p, uap, retval, 0));
|
|
}
|
|
|
|
#ifdef COMPAT_OLDSOCK
|
|
int
|
|
ogetpeername(p, uap, retval)
|
|
struct proc *p;
|
|
struct ogetpeername_args *uap;
|
|
int *retval;
|
|
{
|
|
|
|
/* XXX uap should have type `getpeername_args *' to begin with. */
|
|
return (getpeername1(p, (struct getpeername_args *)uap, retval, 1));
|
|
}
|
|
#endif /* COMPAT_OLDSOCK */
|
|
|
|
int
|
|
sockargs(mp, buf, buflen, type)
|
|
struct mbuf **mp;
|
|
caddr_t buf;
|
|
int buflen, type;
|
|
{
|
|
register struct sockaddr *sa;
|
|
register struct mbuf *m;
|
|
int error;
|
|
|
|
if ((u_int)buflen > MLEN) {
|
|
#ifdef COMPAT_OLDSOCK
|
|
if (type == MT_SONAME && (u_int)buflen <= 112)
|
|
buflen = MLEN; /* unix domain compat. hack */
|
|
else
|
|
#endif
|
|
return (EINVAL);
|
|
}
|
|
m = m_get(M_WAIT, type);
|
|
if (m == NULL)
|
|
return (ENOBUFS);
|
|
m->m_len = buflen;
|
|
error = copyin(buf, mtod(m, caddr_t), (u_int)buflen);
|
|
if (error)
|
|
(void) m_free(m);
|
|
else {
|
|
*mp = m;
|
|
if (type == MT_SONAME) {
|
|
sa = mtod(m, struct sockaddr *);
|
|
|
|
#if defined(COMPAT_OLDSOCK) && BYTE_ORDER != BIG_ENDIAN
|
|
if (sa->sa_family == 0 && sa->sa_len < AF_MAX)
|
|
sa->sa_family = sa->sa_len;
|
|
#endif
|
|
sa->sa_len = buflen;
|
|
}
|
|
}
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
getsock(fdp, fdes, fpp)
|
|
struct filedesc *fdp;
|
|
int fdes;
|
|
struct file **fpp;
|
|
{
|
|
register struct file *fp;
|
|
|
|
if ((unsigned)fdes >= fdp->fd_nfiles ||
|
|
(fp = fdp->fd_ofiles[fdes]) == NULL)
|
|
return (EBADF);
|
|
if (fp->f_type != DTYPE_SOCKET)
|
|
return (ENOTSOCK);
|
|
*fpp = fp;
|
|
return (0);
|
|
}
|