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 1.17 1998/03/28 10:33:07 bde 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 #include <sys/uio.h> 47 48 #include <net/if.h> 49 #include <net/route.h> 50 51 static int soo_read __P((struct file *fp, struct uio *uio, 52 struct ucred *cred)); 53 static int soo_write __P((struct file *fp, struct uio *uio, 54 struct ucred *cred)); 55 static int soo_close __P((struct file *fp, struct proc *p)); 56 57 struct fileops socketops = 58 { soo_read, soo_write, soo_ioctl, soo_poll, soo_close }; 59 60 /* ARGSUSED */ 61 static int 62 soo_read(fp, uio, cred) 63 struct file *fp; 64 struct uio *uio; 65 struct ucred *cred; 66 { 67 struct socket *so = (struct socket *)fp->f_data; 68 return so->so_proto->pr_usrreqs->pru_soreceive(so, 0, uio, 0, 0, 0); 69 } 70 71 /* ARGSUSED */ 72 static int 73 soo_write(fp, uio, cred) 74 struct file *fp; 75 struct uio *uio; 76 struct ucred *cred; 77 { 78 struct socket *so = (struct socket *)fp->f_data; 79 return so->so_proto->pr_usrreqs->pru_sosend(so, 0, uio, 0, 0, 0, 80 uio->uio_procp); 81 } 82 83 int 84 soo_ioctl(fp, cmd, data, p) 85 struct file *fp; 86 u_long cmd; 87 register caddr_t data; 88 struct proc *p; 89 { 90 register struct socket *so = (struct socket *)fp->f_data; 91 92 switch (cmd) { 93 94 case FIONBIO: 95 if (*(int *)data) 96 so->so_state |= SS_NBIO; 97 else 98 so->so_state &= ~SS_NBIO; 99 return (0); 100 101 case FIOASYNC: 102 if (*(int *)data) { 103 so->so_state |= SS_ASYNC; 104 so->so_rcv.sb_flags |= SB_ASYNC; 105 so->so_snd.sb_flags |= SB_ASYNC; 106 } else { 107 so->so_state &= ~SS_ASYNC; 108 so->so_rcv.sb_flags &= ~SB_ASYNC; 109 so->so_snd.sb_flags &= ~SB_ASYNC; 110 } 111 return (0); 112 113 case FIONREAD: 114 *(int *)data = so->so_rcv.sb_cc; 115 return (0); 116 117 case SIOCSPGRP: 118 so->so_pgid = *(int *)data; 119 return (0); 120 121 case SIOCGPGRP: 122 *(int *)data = so->so_pgid; 123 return (0); 124 125 case SIOCATMARK: 126 *(int *)data = (so->so_state&SS_RCVATMARK) != 0; 127 return (0); 128 } 129 /* 130 * Interface/routing/protocol specific ioctls: 131 * interface and routing ioctls should have a 132 * different entry since a socket's unnecessary 133 */ 134 if (IOCGROUP(cmd) == 'i') 135 return (ifioctl(so, cmd, data, p)); 136 if (IOCGROUP(cmd) == 'r') 137 return (rtioctl(cmd, data, p)); 138 return ((*so->so_proto->pr_usrreqs->pru_control)(so, cmd, data, 0, p)); 139 } 140 141 int 142 soo_poll(fp, events, cred, p) 143 struct file *fp; 144 int events; 145 struct ucred *cred; 146 struct proc *p; 147 { 148 struct socket *so = (struct socket *)fp->f_data; 149 return so->so_proto->pr_usrreqs->pru_sopoll(so, events, cred, p); 150 } 151 152 int 153 soo_stat(so, ub) 154 register struct socket *so; 155 register struct stat *ub; 156 { 157 158 bzero((caddr_t)ub, sizeof (*ub)); 159 ub->st_mode = S_IFSOCK; 160 return ((*so->so_proto->pr_usrreqs->pru_sense)(so, ub)); 161 } 162 163 /* ARGSUSED */ 164 static int 165 soo_close(fp, p) 166 struct file *fp; 167 struct proc *p; 168 { 169 int error = 0; 170 171 if (fp->f_data) 172 error = soclose((struct socket *)fp->f_data); 173 fp->f_data = 0; 174 return (error); 175 } 176