Return to sys_socket.c CVS log

Up to [Net/2] / Net2 / kern

Annotation of Net2/kern/sys_socket.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1982, 1986, 1990 Regents of the University of California.
        !             3:  * 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        7.11 (Berkeley) 4/16/91
        !            34:  */
        !            35: 
        !            36: #include "param.h"
        !            37: #include "systm.h"
        !            38: #include "file.h"
        !            39: #include "mbuf.h"
        !            40: #include "protosw.h"
        !            41: #include "socket.h"
        !            42: #include "socketvar.h"
        !            43: #include "ioctl.h"
        !            44: #include "stat.h"
        !            45: 
        !            46: #include "net/if.h"
        !            47: #include "net/route.h"
        !            48: 
        !            49: struct fileops socketops =
        !            50:     { soo_read, soo_write, soo_ioctl, soo_select, soo_close };
        !            51: 
        !            52: /* ARGSUSED */
        !            53: soo_read(fp, uio, cred)
        !            54:        struct file *fp;
        !            55:        struct uio *uio;
        !            56:        struct ucred *cred;
        !            57: {
        !            58: 
        !            59:        return (soreceive((struct socket *)fp->f_data, (struct mbuf **)0,
        !            60:                uio, (struct mbuf **)0, (struct mbuf **)0, (int *)0));
        !            61: }
        !            62: 
        !            63: /* ARGSUSED */
        !            64: soo_write(fp, uio, cred)
        !            65:        struct file *fp;
        !            66:        struct uio *uio;
        !            67:        struct ucred *cred;
        !            68: {
        !            69: 
        !            70:        return (sosend((struct socket *)fp->f_data, (struct mbuf *)0,
        !            71:                uio, (struct mbuf *)0, (struct mbuf *)0, 0));
        !            72: }
        !            73: 
        !            74: soo_ioctl(fp, cmd, data, p)
        !            75:        struct file *fp;
        !            76:        int cmd;
        !            77:        register caddr_t data;
        !            78:        struct proc *p;
        !            79: {
        !            80:        register struct socket *so = (struct socket *)fp->f_data;
        !            81: 
        !            82:        switch (cmd) {
        !            83: 
        !            84:        case FIONBIO:
        !            85:                if (*(int *)data)
        !            86:                        so->so_state |= SS_NBIO;
        !            87:                else
        !            88:                        so->so_state &= ~SS_NBIO;
        !            89:                return (0);
        !            90: 
        !            91:        case FIOASYNC:
        !            92:                if (*(int *)data) {
        !            93:                        so->so_state |= SS_ASYNC;
        !            94:                        so->so_rcv.sb_flags |= SB_ASYNC;
        !            95:                        so->so_snd.sb_flags |= SB_ASYNC;
        !            96:                } else {
        !            97:                        so->so_state &= ~SS_ASYNC;
        !            98:                        so->so_rcv.sb_flags &= ~SB_ASYNC;
        !            99:                        so->so_snd.sb_flags &= ~SB_ASYNC;
        !           100:                }
        !           101:                return (0);
        !           102: 
        !           103:        case FIONREAD:
        !           104:                *(int *)data = so->so_rcv.sb_cc;
        !           105:                return (0);
        !           106: 
        !           107:        case SIOCSPGRP:
        !           108:                so->so_pgid = *(int *)data;
        !           109:                return (0);
        !           110: 
        !           111:        case SIOCGPGRP:
        !           112:                *(int *)data = so->so_pgid;
        !           113:                return (0);
        !           114: 
        !           115:        case SIOCATMARK:
        !           116:                *(int *)data = (so->so_state&SS_RCVATMARK) != 0;
        !           117:                return (0);
        !           118:        }
        !           119:        /*
        !           120:         * Interface/routing/protocol specific ioctls:
        !           121:         * interface and routing ioctls should have a
        !           122:         * different entry since a socket's unnecessary
        !           123:         */
        !           124:        if (IOCGROUP(cmd) == 'i')
        !           125:                return (ifioctl(so, cmd, data, p));
        !           126:        if (IOCGROUP(cmd) == 'r')
        !           127:                return (rtioctl(cmd, data, p));
        !           128:        return ((*so->so_proto->pr_usrreq)(so, PRU_CONTROL, 
        !           129:            (struct mbuf *)cmd, (struct mbuf *)data, (struct mbuf *)0));
        !           130: }
        !           131: 
        !           132: soo_select(fp, which, p)
        !           133:        struct file *fp;
        !           134:        int which;
        !           135:        struct proc *p;
        !           136: {
        !           137:        register struct socket *so = (struct socket *)fp->f_data;
        !           138:        register int s = splnet();
        !           139: 
        !           140:        switch (which) {
        !           141: 
        !           142:        case FREAD:
        !           143:                if (soreadable(so)) {
        !           144:                        splx(s);
        !           145:                        return (1);
        !           146:                }
        !           147:                sbselqueue(&so->so_rcv, p);
        !           148:                break;
        !           149: 
        !           150:        case FWRITE:
        !           151:                if (sowriteable(so)) {
        !           152:                        splx(s);
        !           153:                        return (1);
        !           154:                }
        !           155:                sbselqueue(&so->so_snd, p);
        !           156:                break;
        !           157: 
        !           158:        case 0:
        !           159:                if (so->so_oobmark ||
        !           160:                    (so->so_state & SS_RCVATMARK)) {
        !           161:                        splx(s);
        !           162:                        return (1);
        !           163:                }
        !           164:                sbselqueue(&so->so_rcv, p);
        !           165:                break;
        !           166:        }
        !           167:        splx(s);
        !           168:        return (0);
        !           169: }
        !           170: 
        !           171: soo_stat(so, ub)
        !           172:        register struct socket *so;
        !           173:        register struct stat *ub;
        !           174: {
        !           175: 
        !           176:        bzero((caddr_t)ub, sizeof (*ub));
        !           177:        return ((*so->so_proto->pr_usrreq)(so, PRU_SENSE,
        !           178:            (struct mbuf *)ub, (struct mbuf *)0, 
        !           179:            (struct mbuf *)0));
        !           180: }
        !           181: 
        !           182: /* ARGSUSED */
        !           183: soo_close(fp, p)
        !           184:        struct file *fp;
        !           185:        struct proc *p;
        !           186: {
        !           187:        int error = 0;
        !           188: 
        !           189:        if (fp->f_data)
        !           190:                error = soclose((struct socket *)fp->f_data);
        !           191:        fp->f_data = 0;
        !           192:        return (error);
        !           193: }

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.