sys_socket.c revision 1.12
1 /* $NetBSD: sys_socket.c,v 1.12 1994/10/30 21:47:52 cgd Exp $ */ 2 3 /* 4 * Copyright (c) 1982, 1986, 1990, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * @(#)sys_socket.c 8.1 (Berkeley) 6/10/93 36 */ 37 38 #include <sys/param.h> 39 #include <sys/systm.h> 40 #include <sys/file.h> 41 #include <sys/mbuf.h> 42 #include <sys/protosw.h> 43 #include <sys/socket.h> 44 #include <sys/socketvar.h> 45 #include <sys/ioctl.h> 46 #include <sys/stat.h> 47 48 #include <net/if.h> 49 #include <net/route.h> 50 51 struct fileops socketops = 52 { soo_read, soo_write, soo_ioctl, soo_select, soo_close }; 53 54 /* ARGSUSED */ 55 int 56 soo_read(fp, uio, cred) 57 struct file *fp; 58 struct uio *uio; 59 struct ucred *cred; 60 { 61 62 return (soreceive((struct socket *)fp->f_data, (struct mbuf **)0, 63 uio, (struct mbuf **)0, (struct mbuf **)0, (int *)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 74 return (sosend((struct socket *)fp->f_data, (struct mbuf *)0, 75 uio, (struct mbuf *)0, (struct mbuf *)0, 0)); 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 SIOCSPGRP: 113 so->so_pgid = *(int *)data; 114 return (0); 115 116 case SIOCGPGRP: 117 *(int *)data = so->so_pgid; 118 return (0); 119 120 case SIOCATMARK: 121 *(int *)data = (so->so_state&SS_RCVATMARK) != 0; 122 return (0); 123 } 124 /* 125 * Interface/routing/protocol specific ioctls: 126 * interface and routing ioctls should have a 127 * different entry since a socket's unnecessary 128 */ 129 if (IOCGROUP(cmd) == 'i') 130 return (ifioctl(so, cmd, data, p)); 131 if (IOCGROUP(cmd) == 'r') 132 return (rtioctl(cmd, data, p)); 133 return ((*so->so_proto->pr_usrreq)(so, PRU_CONTROL, 134 (struct mbuf *)cmd, (struct mbuf *)data, (struct mbuf *)0)); 135 } 136 137 int 138 soo_select(fp, which, p) 139 struct file *fp; 140 int which; 141 struct proc *p; 142 { 143 register struct socket *so = (struct socket *)fp->f_data; 144 register int s = splnet(); 145 146 switch (which) { 147 148 case FREAD: 149 if (soreadable(so)) { 150 splx(s); 151 return (1); 152 } 153 selrecord(p, &so->so_rcv.sb_sel); 154 so->so_rcv.sb_flags |= SB_SEL; 155 break; 156 157 case FWRITE: 158 if (sowriteable(so)) { 159 splx(s); 160 return (1); 161 } 162 selrecord(p, &so->so_snd.sb_sel); 163 so->so_snd.sb_flags |= SB_SEL; 164 break; 165 166 case 0: 167 if (so->so_oobmark || (so->so_state & SS_RCVATMARK)) { 168 splx(s); 169 return (1); 170 } 171 selrecord(p, &so->so_rcv.sb_sel); 172 so->so_rcv.sb_flags |= SB_SEL; 173 break; 174 } 175 splx(s); 176 return (0); 177 } 178 179 int 180 soo_stat(so, ub) 181 register struct socket *so; 182 register struct stat *ub; 183 { 184 185 bzero((caddr_t)ub, sizeof (*ub)); 186 ub->st_mode = S_IFSOCK; 187 return ((*so->so_proto->pr_usrreq)(so, PRU_SENSE, 188 (struct mbuf *)ub, (struct mbuf *)0, 189 (struct mbuf *)0)); 190 } 191 192 /* ARGSUSED */ 193 int 194 soo_close(fp, p) 195 struct file *fp; 196 struct proc *p; 197 { 198 int error = 0; 199 200 if (fp->f_data) 201 error = soclose((struct socket *)fp->f_data); 202 fp->f_data = 0; 203 return (error); 204 } 205
Indexes created Tue Sep 23 07:09:52 GMT 2025