1 /* 2 * Copyright (c) 1982, 1986, 1990, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#)sys_socket.c 8.1 (Berkeley) 6/10/93 34 * $Id: sys_socket.c,v 1.15 1997/08/16 19:15:02 wollman Exp $ 35 */ 36 37 #include <sys/param.h> 38 #include <sys/systm.h> 39 #include <sys/file.h> 40 #include <sys/protosw.h> 41 #include <sys/socket.h> 42 #include <sys/socketvar.h> 43 #include <sys/filio.h> /* XXX */ 44 #include <sys/sockio.h> 45 #include <sys/stat.h> 46 47 #include <net/if.h> 48 #include <net/route.h> 49 50 static int soo_read __P((struct file *fp, struct uio *uio, 51 struct ucred *cred)); 52 static int soo_write __P((struct file *fp, struct uio *uio, 53 struct ucred *cred)); 54 static int soo_close __P((struct file *fp, struct proc *p)); 55 56 struct fileops socketops = 57 { soo_read, soo_write, soo_ioctl, soo_poll, soo_close }; 58 59 /* ARGSUSED */ 60 static int 61 soo_read(fp, uio, cred) 62 struct file *fp; 63 struct uio *uio; 64 struct ucred *cred; 65 { 66 struct socket *so = (struct socket *)fp->f_data; 67 return so->so_proto->pr_usrreqs->pru_soreceive(so, 0, uio, 0, 0, 0); 68 } 69 70 /* ARGSUSED */ 71 static int 72 soo_write(fp, uio, cred) 73 struct file *fp; 74 struct uio *uio; 75 struct ucred *cred; 76 { 77 struct socket *so = (struct socket *)fp->f_data; 78 return so->so_proto->pr_usrreqs->pru_sosend(so, 0, uio, 0, 0, 0, 79 uio->uio_procp); 80 } 81 82 int 83 soo_ioctl(fp, cmd, data, p) 84 struct file *fp; 85 int cmd; 86 register caddr_t data; 87 struct proc *p; 88 { 89 register struct socket *so = (struct socket *)fp->f_data; 90 91 switch (cmd) { 92 93 case FIONBIO: 94 if (*(int *)data) 95 so->so_state |= SS_NBIO; 96 else 97 so->so_state &= ~SS_NBIO; 98 return (0); 99 100 case FIOASYNC: 101 if (*(int *)data) { 102 so->so_state |= SS_ASYNC; 103 so->so_rcv.sb_flags |= SB_ASYNC; 104 so->so_snd.sb_flags |= SB_ASYNC; 105 } else { 106 so->so_state &= ~SS_ASYNC; 107 so->so_rcv.sb_flags &= ~SB_ASYNC; 108 so->so_snd.sb_flags &= ~SB_ASYNC; 109 } 110 return (0); 111 112 case FIONREAD: 113 *(int *)data = so->so_rcv.sb_cc; 114 return (0); 115 116 case SIOCSPGRP: 117 so->so_pgid = *(int *)data; 118 return (0); 119 120 case SIOCGPGRP: 121 *(int *)data = so->so_pgid; 122 return (0); 123 124 case SIOCATMARK: 125 *(int *)data = (so->so_state&SS_RCVATMARK) != 0; 126 return (0); 127 } 128 /* 129 * Interface/routing/protocol specific ioctls: 130 * interface and routing ioctls should have a 131 * different entry since a socket's unnecessary 132 */ 133 if (IOCGROUP(cmd) == 'i') 134 return (ifioctl(so, cmd, data, p)); 135 if (IOCGROUP(cmd) == 'r') 136 return (rtioctl(cmd, data, p)); 137 return ((*so->so_proto->pr_usrreqs->pru_control)(so, cmd, data, 0, p)); 138 } 139 140 int 141 soo_poll(fp, events, cred, p) 142 struct file *fp; 143 int events; 144 struct ucred *cred; 145 struct proc *p; 146 { 147 struct socket *so = (struct socket *)fp->f_data; 148 return so->so_proto->pr_usrreqs->pru_sopoll(so, events, cred, p); 149 } 150 151 int 152 soo_stat(so, ub) 153 register struct socket *so; 154 register struct stat *ub; 155 { 156 157 bzero((caddr_t)ub, sizeof (*ub)); 158 ub->st_mode = S_IFSOCK; 159 return ((*so->so_proto->pr_usrreqs->pru_sense)(so, ub)); 160 } 161 162 /* ARGSUSED */ 163 static int 164 soo_close(fp, p) 165 struct file *fp; 166 struct proc *p; 167 { 168 int error = 0; 169 170 if (fp->f_data) 171 error = soclose((struct socket *)fp->f_data); 172 fp->f_data = 0; 173 return (error); 174 } 175