sys_socket.c revision 1.1.1.2
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 */ 35 36 #include <sys/param.h> 37 #include <sys/systm.h> 38 #include <sys/proc.h> 39 #include <sys/file.h> 40 #include <sys/mbuf.h> 41 #include <sys/protosw.h> 42 #include <sys/socket.h> 43 #include <sys/socketvar.h> 44 #include <sys/ioctl.h> 45 #include <sys/stat.h> 46 47 #include <net/if.h> 48 #include <net/route.h> 49 50 struct fileops socketops = 51 { soo_read, soo_write, soo_ioctl, soo_select, soo_close }; 52 53 /* ARGSUSED */ 54 soo_read(fp, uio, cred) 55 struct file *fp; 56 struct uio *uio; 57 struct ucred *cred; 58 { 59 60 return (soreceive((struct socket *)fp->f_data, (struct mbuf **)0, 61 uio, (struct mbuf **)0, (struct mbuf **)0, (int *)0)); 62 } 63 64 /* ARGSUSED */ 65 soo_write(fp, uio, cred) 66 struct file *fp; 67 struct uio *uio; 68 struct ucred *cred; 69 { 70 71 return (sosend((struct socket *)fp->f_data, (struct mbuf *)0, 72 uio, (struct mbuf *)0, (struct mbuf *)0, 0)); 73 } 74 75 soo_ioctl(fp, cmd, data, p) 76 struct file *fp; 77 int cmd; 78 register caddr_t data; 79 struct proc *p; 80 { 81 register struct socket *so = (struct socket *)fp->f_data; 82 83 switch (cmd) { 84 85 case FIONBIO: 86 if (*(int *)data) 87 so->so_state |= SS_NBIO; 88 else 89 so->so_state &= ~SS_NBIO; 90 return (0); 91 92 case FIOASYNC: 93 if (*(int *)data) { 94 so->so_state |= SS_ASYNC; 95 so->so_rcv.sb_flags |= SB_ASYNC; 96 so->so_snd.sb_flags |= SB_ASYNC; 97 } else { 98 so->so_state &= ~SS_ASYNC; 99 so->so_rcv.sb_flags &= ~SB_ASYNC; 100 so->so_snd.sb_flags &= ~SB_ASYNC; 101 } 102 return (0); 103 104 case FIONREAD: 105 *(int *)data = so->so_rcv.sb_cc; 106 return (0); 107 108 case SIOCSPGRP: 109 so->so_pgid = *(int *)data; 110 return (0); 111 112 case SIOCGPGRP: 113 *(int *)data = so->so_pgid; 114 return (0); 115 116 case SIOCATMARK: 117 *(int *)data = (so->so_state&SS_RCVATMARK) != 0; 118 return (0); 119 } 120 /* 121 * Interface/routing/protocol specific ioctls: 122 * interface and routing ioctls should have a 123 * different entry since a socket's unnecessary 124 */ 125 if (IOCGROUP(cmd) == 'i') 126 return (ifioctl(so, cmd, data, p)); 127 if (IOCGROUP(cmd) == 'r') 128 return (rtioctl(cmd, data, p)); 129 return ((*so->so_proto->pr_usrreq)(so, PRU_CONTROL, 130 (struct mbuf *)cmd, (struct mbuf *)data, (struct mbuf *)0)); 131 } 132 133 soo_select(fp, which, p) 134 struct file *fp; 135 int which; 136 struct proc *p; 137 { 138 register struct socket *so = (struct socket *)fp->f_data; 139 register int s = splnet(); 140 141 switch (which) { 142 143 case FREAD: 144 if (soreadable(so)) { 145 splx(s); 146 return (1); 147 } 148 selrecord(p, &so->so_rcv.sb_sel); 149 so->so_rcv.sb_flags |= SB_SEL; 150 break; 151 152 case FWRITE: 153 if (sowriteable(so)) { 154 splx(s); 155 return (1); 156 } 157 selrecord(p, &so->so_snd.sb_sel); 158 so->so_snd.sb_flags |= SB_SEL; 159 break; 160 161 case 0: 162 if (so->so_oobmark || (so->so_state & SS_RCVATMARK)) { 163 splx(s); 164 return (1); 165 } 166 selrecord(p, &so->so_rcv.sb_sel); 167 so->so_rcv.sb_flags |= SB_SEL; 168 break; 169 } 170 splx(s); 171 return (0); 172 } 173 174 soo_stat(so, ub) 175 register struct socket *so; 176 register struct stat *ub; 177 { 178 179 bzero((caddr_t)ub, sizeof (*ub)); 180 ub->st_mode = S_IFSOCK; 181 return ((*so->so_proto->pr_usrreq)(so, PRU_SENSE, 182 (struct mbuf *)ub, (struct mbuf *)0, 183 (struct mbuf *)0)); 184 } 185 186 /* ARGSUSED */ 187 soo_close(fp, p) 188 struct file *fp; 189 struct proc *p; 190 { 191 int error = 0; 192 193 if (fp->f_data) 194 error = soclose((struct socket *)fp->f_data); 195 fp->f_data = 0; 196 return (error); 197 } 198
Indexes created Tue Sep 30 10:09:55 GMT 2025