| 1 | /* |
| 2 | * Copyright (c) 1982, 1986, 1990 Regents of the University of California. |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * %sccs.include.redist.c% |
| 6 | * |
| 7 | * @(#)sys_socket.c 7.9 (Berkeley) %G% |
| 8 | */ |
| 9 | |
| 10 | #include "param.h" |
| 11 | #include "systm.h" |
| 12 | #include "user.h" |
| 13 | #include "file.h" |
| 14 | #include "mbuf.h" |
| 15 | #include "protosw.h" |
| 16 | #include "socket.h" |
| 17 | #include "socketvar.h" |
| 18 | #include "ioctl.h" |
| 19 | #include "uio.h" |
| 20 | #include "stat.h" |
| 21 | |
| 22 | #include "../net/if.h" |
| 23 | #include "../net/route.h" |
| 24 | |
| 25 | int soo_read(), soo_write(), soo_ioctl(), soo_select(), soo_close(); |
| 26 | struct fileops socketops = |
| 27 | { soo_read, soo_write, soo_ioctl, soo_select, soo_close }; |
| 28 | |
| 29 | /* ARGSUSED */ |
| 30 | soo_read(fp, uio, cred) |
| 31 | struct file *fp; |
| 32 | struct uio *uio; |
| 33 | struct ucred *cred; |
| 34 | { |
| 35 | |
| 36 | return (soreceive((struct socket *)fp->f_data, (struct mbuf **)0, |
| 37 | uio, (struct mbuf **)0, (struct mbuf **)0, (int *)0)); |
| 38 | } |
| 39 | |
| 40 | /* ARGSUSED */ |
| 41 | soo_write(fp, uio, cred) |
| 42 | struct file *fp; |
| 43 | struct uio *uio; |
| 44 | struct ucred *cred; |
| 45 | { |
| 46 | |
| 47 | return (sosend((struct socket *)fp->f_data, (struct mbuf *)0, |
| 48 | uio, (struct mbuf *)0, (struct mbuf *)0, 0)); |
| 49 | } |
| 50 | |
| 51 | soo_ioctl(fp, cmd, data, p) |
| 52 | struct file *fp; |
| 53 | int cmd; |
| 54 | register caddr_t data; |
| 55 | struct proc *p; |
| 56 | { |
| 57 | register struct socket *so = (struct socket *)fp->f_data; |
| 58 | |
| 59 | switch (cmd) { |
| 60 | |
| 61 | case FIONBIO: |
| 62 | if (*(int *)data) |
| 63 | so->so_state |= SS_NBIO; |
| 64 | else |
| 65 | so->so_state &= ~SS_NBIO; |
| 66 | return (0); |
| 67 | |
| 68 | case FIOASYNC: |
| 69 | if (*(int *)data) { |
| 70 | so->so_state |= SS_ASYNC; |
| 71 | so->so_rcv.sb_flags |= SB_ASYNC; |
| 72 | so->so_snd.sb_flags |= SB_ASYNC; |
| 73 | } else { |
| 74 | so->so_state &= ~SS_ASYNC; |
| 75 | so->so_rcv.sb_flags &= ~SB_ASYNC; |
| 76 | so->so_snd.sb_flags &= ~SB_ASYNC; |
| 77 | } |
| 78 | return (0); |
| 79 | |
| 80 | case FIONREAD: |
| 81 | *(int *)data = so->so_rcv.sb_cc; |
| 82 | return (0); |
| 83 | |
| 84 | case SIOCSPGRP: |
| 85 | so->so_pgid = *(int *)data; |
| 86 | return (0); |
| 87 | |
| 88 | case SIOCGPGRP: |
| 89 | *(int *)data = so->so_pgid; |
| 90 | return (0); |
| 91 | |
| 92 | case SIOCATMARK: |
| 93 | *(int *)data = (so->so_state&SS_RCVATMARK) != 0; |
| 94 | return (0); |
| 95 | } |
| 96 | /* |
| 97 | * Interface/routing/protocol specific ioctls: |
| 98 | * interface and routing ioctls should have a |
| 99 | * different entry since a socket's unnecessary |
| 100 | */ |
| 101 | if (IOCGROUP(cmd) == 'i') |
| 102 | return (ifioctl(so, cmd, data, p)); |
| 103 | if (IOCGROUP(cmd) == 'r') |
| 104 | return (rtioctl(cmd, data, p)); |
| 105 | return ((*so->so_proto->pr_usrreq)(so, PRU_CONTROL, |
| 106 | (struct mbuf *)cmd, (struct mbuf *)data, (struct mbuf *)0)); |
| 107 | } |
| 108 | |
| 109 | soo_select(fp, which, p) |
| 110 | struct file *fp; |
| 111 | int which; |
| 112 | struct proc *p; |
| 113 | { |
| 114 | register struct socket *so = (struct socket *)fp->f_data; |
| 115 | register int s = splnet(); |
| 116 | |
| 117 | switch (which) { |
| 118 | |
| 119 | case FREAD: |
| 120 | if (soreadable(so)) { |
| 121 | splx(s); |
| 122 | return (1); |
| 123 | } |
| 124 | sbselqueue(&so->so_rcv, p); |
| 125 | break; |
| 126 | |
| 127 | case FWRITE: |
| 128 | if (sowriteable(so)) { |
| 129 | splx(s); |
| 130 | return (1); |
| 131 | } |
| 132 | sbselqueue(&so->so_snd, p); |
| 133 | break; |
| 134 | |
| 135 | case 0: |
| 136 | if (so->so_oobmark || |
| 137 | (so->so_state & SS_RCVATMARK)) { |
| 138 | splx(s); |
| 139 | return (1); |
| 140 | } |
| 141 | sbselqueue(&so->so_rcv, p); |
| 142 | break; |
| 143 | } |
| 144 | splx(s); |
| 145 | return (0); |
| 146 | } |
| 147 | |
| 148 | soo_stat(so, ub) |
| 149 | register struct socket *so; |
| 150 | register struct stat *ub; |
| 151 | { |
| 152 | |
| 153 | bzero((caddr_t)ub, sizeof (*ub)); |
| 154 | return ((*so->so_proto->pr_usrreq)(so, PRU_SENSE, |
| 155 | (struct mbuf *)ub, (struct mbuf *)0, |
| 156 | (struct mbuf *)0)); |
| 157 | } |
| 158 | |
| 159 | soo_close(fp) |
| 160 | struct file *fp; |
| 161 | { |
| 162 | int error = 0; |
| 163 | |
| 164 | if (fp->f_data) |
| 165 | error = soclose((struct socket *)fp->f_data); |
| 166 | fp->f_data = 0; |
| 167 | return (error); |
| 168 | } |