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 1.18 1998/06/07 17:11:40 dfr 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 static int soo_read __P((struct file *fp, struct uio *uio, 53 struct ucred *cred)); 54 static int soo_write __P((struct file *fp, struct uio *uio, 55 struct ucred *cred)); 56 static int soo_close __P((struct file *fp, struct proc *p)); 57 58 struct fileops socketops = 59 { soo_read, soo_write, soo_ioctl, soo_poll, soo_close }; 60 61 /* ARGSUSED */ 62 static int 63 soo_read(fp, uio, cred) 64 struct file *fp; 65 struct uio *uio; 66 struct ucred *cred; 67 { 68 struct socket *so = (struct socket *)fp->f_data; 69 return so->so_proto->pr_usrreqs->pru_soreceive(so, 0, uio, 0, 0, 0); 70 } 71 72 /* ARGSUSED */ 73 static int 74 soo_write(fp, uio, cred) 75 struct file *fp; 76 struct uio *uio; 77 struct ucred *cred; 78 { 79 struct socket *so = (struct socket *)fp->f_data; 80 return so->so_proto->pr_usrreqs->pru_sosend(so, 0, uio, 0, 0, 0, 81 uio->uio_procp); 82 } 83 84 int 85 soo_ioctl(fp, cmd, data, p) 86 struct file *fp; 87 u_long cmd; 88 register caddr_t data; 89 struct proc *p; 90 { 91 register struct socket *so = (struct socket *)fp->f_data; 92 93 switch (cmd) { 94 95 case FIONBIO: 96 if (*(int *)data) 97 so->so_state |= SS_NBIO; 98 else 99 so->so_state &= ~SS_NBIO; 100 return (0); 101 102 case FIOASYNC: 103 if (*(int *)data) { 104 so->so_state |= SS_ASYNC; 105 so->so_rcv.sb_flags |= SB_ASYNC; 106 so->so_snd.sb_flags |= SB_ASYNC; 107 } else { 108 so->so_state &= ~SS_ASYNC; 109 so->so_rcv.sb_flags &= ~SB_ASYNC; 110 so->so_snd.sb_flags &= ~SB_ASYNC; 111 } 112 return (0); 113 114 case FIONREAD: 115 *(int *)data = so->so_rcv.sb_cc; 116 return (0); 117 118 case FIOSETOWN: 119 return (fsetown(*(int *)data, &so->so_sigio)); 120 121 case FIOGETOWN: 122 *(int *)data = fgetown(so->so_sigio); 123 return (0); 124 125 case SIOCSPGRP: 126 return (fsetown(-(*(int *)data), &so->so_sigio)); 127 128 case SIOCGPGRP: 129 *(int *)data = -fgetown(so->so_sigio); 130 return (0); 131 132 case SIOCATMARK: 133 *(int *)data = (so->so_state&SS_RCVATMARK) != 0; 134 return (0); 135 } 136 /* 137 * Interface/routing/protocol specific ioctls: 138 * interface and routing ioctls should have a 139 * different entry since a socket's unnecessary 140 */ 141 if (IOCGROUP(cmd) == 'i') 142 return (ifioctl(so, cmd, data, p)); 143 if (IOCGROUP(cmd) == 'r') 144 return (rtioctl(cmd, data, p)); 145 return ((*so->so_proto->pr_usrreqs->pru_control)(so, cmd, data, 0, p)); 146 } 147 148 int 149 soo_poll(fp, events, cred, p) 150 struct file *fp; 151 int events; 152 struct ucred *cred; 153 struct proc *p; 154 { 155 struct socket *so = (struct socket *)fp->f_data; 156 return so->so_proto->pr_usrreqs->pru_sopoll(so, events, cred, p); 157 } 158 159 int 160 soo_stat(so, ub) 161 register struct socket *so; 162 register struct stat *ub; 163 { 164 165 bzero((caddr_t)ub, sizeof (*ub)); 166 ub->st_mode = S_IFSOCK; 167 return ((*so->so_proto->pr_usrreqs->pru_sense)(so, ub)); 168 } 169 170 /* ARGSUSED */ 171 static int 172 soo_close(fp, p) 173 struct file *fp; 174 struct proc *p; 175 { 176 int error = 0; 177 178 if (fp->f_data) 179 error = soclose((struct socket *)fp->f_data); 180 fp->f_data = 0; 181 return (error); 182 } 183