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 1.22 1999/02/01 13:24:39 newton 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 #include <sys/filedesc.h> 48 49 #include <net/if.h> 50 #include <net/route.h> 51 52 struct fileops socketops = 53 { soo_read, soo_write, soo_ioctl, soo_poll, soo_close }; 54 55 /* ARGSUSED */ 56 int 57 soo_read(fp, uio, cred) 58 struct file *fp; 59 struct uio *uio; 60 struct ucred *cred; 61 { 62 struct socket *so = (struct socket *)fp->f_data; 63 return so->so_proto->pr_usrreqs->pru_soreceive(so, 0, uio, 0, 0, 0); 64 } 65 66 /* ARGSUSED */ 67 int 68 soo_write(fp, uio, cred) 69 struct file *fp; 70 struct uio *uio; 71 struct ucred *cred; 72 { 73 struct socket *so = (struct socket *)fp->f_data; 74 return so->so_proto->pr_usrreqs->pru_sosend(so, 0, uio, 0, 0, 0, 75 uio->uio_procp); 76 } 77 78 int 79 soo_ioctl(fp, cmd, data, p) 80 struct file *fp; 81 u_long cmd; 82 register caddr_t data; 83 struct proc *p; 84 { 85 register struct socket *so = (struct socket *)fp->f_data; 86 87 switch (cmd) { 88 89 case FIONBIO: 90 if (*(int *)data) 91 so->so_state |= SS_NBIO; 92 else 93 so->so_state &= ~SS_NBIO; 94 return (0); 95 96 case FIOASYNC: 97 if (*(int *)data) { 98 so->so_state |= SS_ASYNC; 99 so->so_rcv.sb_flags |= SB_ASYNC; 100 so->so_snd.sb_flags |= SB_ASYNC; 101 } else { 102 so->so_state &= ~SS_ASYNC; 103 so->so_rcv.sb_flags &= ~SB_ASYNC; 104 so->so_snd.sb_flags &= ~SB_ASYNC; 105 } 106 return (0); 107 108 case FIONREAD: 109 *(int *)data = so->so_rcv.sb_cc; 110 return (0); 111 112 case FIOSETOWN: 113 return (fsetown(*(int *)data, &so->so_sigio)); 114 115 case FIOGETOWN: 116 *(int *)data = fgetown(so->so_sigio); 117 return (0); 118 119 case SIOCSPGRP: 120 return (fsetown(-(*(int *)data), &so->so_sigio)); 121 122 case SIOCGPGRP: 123 *(int *)data = -fgetown(so->so_sigio); 124 return (0); 125 126 case SIOCATMARK: 127 *(int *)data = (so->so_state&SS_RCVATMARK) != 0; 128 return (0); 129 } 130 /* 131 * Interface/routing/protocol specific ioctls: 132 * interface and routing ioctls should have a 133 * different entry since a socket's unnecessary 134 */ 135 if (IOCGROUP(cmd) == 'i') 136 return (ifioctl(so, cmd, data, p)); 137 if (IOCGROUP(cmd) == 'r') 138 return (rtioctl(cmd, data, p)); 139 return ((*so->so_proto->pr_usrreqs->pru_control)(so, cmd, data, 0, p)); 140 } 141 142 int 143 soo_poll(fp, events, cred, p) 144 struct file *fp; 145 int events; 146 struct ucred *cred; 147 struct proc *p; 148 { 149 struct socket *so = (struct socket *)fp->f_data; 150 return so->so_proto->pr_usrreqs->pru_sopoll(so, events, cred, p); 151 } 152 153 int 154 soo_stat(so, ub) 155 register struct socket *so; 156 register struct stat *ub; 157 { 158 159 bzero((caddr_t)ub, sizeof (*ub)); 160 ub->st_mode = S_IFSOCK; 161 return ((*so->so_proto->pr_usrreqs->pru_sense)(so, ub)); 162 } 163 164 /* ARGSUSED */ 165 int 166 soo_close(fp, p) 167 struct file *fp; 168 struct proc *p; 169 { 170 int error = 0; 171 172 if (fp->f_data) 173 error = soclose((struct socket *)fp->f_data); 174 fp->f_data = 0; 175 return (error); 176 } 177