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 1.23 1999/02/01 21:16:29 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, flags) 58 struct file *fp; 59 struct uio *uio; 60 struct ucred *cred; 61 int flags; 62 { 63 struct socket *so = (struct socket *)fp->f_data; 64 return so->so_proto->pr_usrreqs->pru_soreceive(so, 0, uio, 0, 0, 0); 65 } 66 67 /* ARGSUSED */ 68 int 69 soo_write(fp, uio, cred, flags) 70 struct file *fp; 71 struct uio *uio; 72 struct ucred *cred; 73 int flags; 74 { 75 struct socket *so = (struct socket *)fp->f_data; 76 return so->so_proto->pr_usrreqs->pru_sosend(so, 0, uio, 0, 0, 0, 77 uio->uio_procp); 78 } 79 80 int 81 soo_ioctl(fp, cmd, data, p) 82 struct file *fp; 83 u_long cmd; 84 register caddr_t data; 85 struct proc *p; 86 { 87 register struct socket *so = (struct socket *)fp->f_data; 88 89 switch (cmd) { 90 91 case FIONBIO: 92 if (*(int *)data) 93 so->so_state |= SS_NBIO; 94 else 95 so->so_state &= ~SS_NBIO; 96 return (0); 97 98 case FIOASYNC: 99 if (*(int *)data) { 100 so->so_state |= SS_ASYNC; 101 so->so_rcv.sb_flags |= SB_ASYNC; 102 so->so_snd.sb_flags |= SB_ASYNC; 103 } else { 104 so->so_state &= ~SS_ASYNC; 105 so->so_rcv.sb_flags &= ~SB_ASYNC; 106 so->so_snd.sb_flags &= ~SB_ASYNC; 107 } 108 return (0); 109 110 case FIONREAD: 111 *(int *)data = so->so_rcv.sb_cc; 112 return (0); 113 114 case FIOSETOWN: 115 return (fsetown(*(int *)data, &so->so_sigio)); 116 117 case FIOGETOWN: 118 *(int *)data = fgetown(so->so_sigio); 119 return (0); 120 121 case SIOCSPGRP: 122 return (fsetown(-(*(int *)data), &so->so_sigio)); 123 124 case SIOCGPGRP: 125 *(int *)data = -fgetown(so->so_sigio); 126 return (0); 127 128 case SIOCATMARK: 129 *(int *)data = (so->so_state&SS_RCVATMARK) != 0; 130 return (0); 131 } 132 /* 133 * Interface/routing/protocol specific ioctls: 134 * interface and routing ioctls should have a 135 * different entry since a socket's unnecessary 136 */ 137 if (IOCGROUP(cmd) == 'i') 138 return (ifioctl(so, cmd, data, p)); 139 if (IOCGROUP(cmd) == 'r') 140 return (rtioctl(cmd, data, p)); 141 return ((*so->so_proto->pr_usrreqs->pru_control)(so, cmd, data, 0, p)); 142 } 143 144 int 145 soo_poll(fp, events, cred, p) 146 struct file *fp; 147 int events; 148 struct ucred *cred; 149 struct proc *p; 150 { 151 struct socket *so = (struct socket *)fp->f_data; 152 return so->so_proto->pr_usrreqs->pru_sopoll(so, events, cred, p); 153 } 154 155 int 156 soo_stat(so, ub) 157 register struct socket *so; 158 register struct stat *ub; 159 { 160 161 bzero((caddr_t)ub, sizeof (*ub)); 162 ub->st_mode = S_IFSOCK; 163 return ((*so->so_proto->pr_usrreqs->pru_sense)(so, ub)); 164 } 165 166 /* ARGSUSED */ 167 int 168 soo_close(fp, p) 169 struct file *fp; 170 struct proc *p; 171 { 172 int error = 0; 173 174 if (fp->f_data) 175 error = soclose((struct socket *)fp->f_data); 176 fp->f_data = 0; 177 return (error); 178 } 179