[39e6e65a] | 1 | /* |
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| 2 | * Copyright (c) 1982, 1986, 1988, 1990, 1993 |
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| 3 | * The Regents of the University of California. All rights reserved. |
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| 4 | * |
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| 5 | * Redistribution and use in source and binary forms, with or without |
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| 6 | * modification, are permitted provided that the following conditions |
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| 7 | * are met: |
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| 8 | * 1. Redistributions of source code must retain the above copyright |
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| 9 | * notice, this list of conditions and the following disclaimer. |
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| 10 | * 2. Redistributions in binary form must reproduce the above copyright |
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| 11 | * notice, this list of conditions and the following disclaimer in the |
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| 12 | * documentation and/or other materials provided with the distribution. |
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| 13 | * 3. All advertising materials mentioning features or use of this software |
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| 14 | * must display the following acknowledgement: |
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| 15 | * This product includes software developed by the University of |
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| 16 | * California, Berkeley and its contributors. |
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| 17 | * 4. Neither the name of the University nor the names of its contributors |
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| 18 | * may be used to endorse or promote products derived from this software |
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| 19 | * without specific prior written permission. |
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| 20 | * |
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| 21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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| 22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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| 23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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| 24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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| 25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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| 26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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| 27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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| 28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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| 29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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| 30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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| 31 | * SUCH DAMAGE. |
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| 32 | * |
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| 33 | * @(#)uipc_socket.c 8.3 (Berkeley) 4/15/94 |
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| 34 | * $Id$ |
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| 35 | */ |
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| 36 | |
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| 37 | #include <sys/param.h> |
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| 38 | #include <sys/queue.h> |
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| 39 | #include <sys/systm.h> |
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| 40 | #include <sys/proc.h> |
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| 41 | #include <sys/file.h> |
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| 42 | #include <sys/malloc.h> |
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| 43 | #include <sys/mbuf.h> |
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| 44 | #include <sys/domain.h> |
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| 45 | #include <sys/kernel.h> |
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| 46 | #include <sys/protosw.h> |
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| 47 | #include <sys/socket.h> |
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| 48 | #include <sys/socketvar.h> |
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| 49 | #include <sys/resourcevar.h> |
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| 50 | #include <sys/signalvar.h> |
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| 51 | #include <sys/sysctl.h> |
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[847375f] | 52 | #include <limits.h> |
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[39e6e65a] | 53 | |
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| 54 | static int somaxconn = SOMAXCONN; |
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| 55 | SYSCTL_INT(_kern, KERN_SOMAXCONN, somaxconn, CTLFLAG_RW, &somaxconn, 0, ""); |
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| 56 | |
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| 57 | /* |
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| 58 | * Socket operation routines. |
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| 59 | * These routines are called by the routines in |
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| 60 | * sys_socket.c or from a system process, and |
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| 61 | * implement the semantics of socket operations by |
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| 62 | * switching out to the protocol specific routines. |
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| 63 | */ |
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| 64 | /*ARGSUSED*/ |
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| 65 | int |
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| 66 | socreate(dom, aso, type, proto, p) |
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| 67 | int dom; |
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| 68 | struct socket **aso; |
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| 69 | register int type; |
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| 70 | int proto; |
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| 71 | struct proc *p; |
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| 72 | { |
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| 73 | register struct protosw *prp; |
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| 74 | register struct socket *so; |
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| 75 | register int error; |
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| 76 | |
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| 77 | if (proto) |
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| 78 | prp = pffindproto(dom, proto, type); |
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| 79 | else |
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| 80 | prp = pffindtype(dom, type); |
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| 81 | if (prp == 0 || prp->pr_usrreqs == 0) |
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| 82 | return (EPROTONOSUPPORT); |
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| 83 | if (prp->pr_type != type) |
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| 84 | return (EPROTOTYPE); |
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| 85 | MALLOC(so, struct socket *, sizeof(*so), M_SOCKET, M_WAIT); |
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| 86 | bzero((caddr_t)so, sizeof(*so)); |
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| 87 | TAILQ_INIT(&so->so_incomp); |
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| 88 | TAILQ_INIT(&so->so_comp); |
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| 89 | so->so_type = type; |
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| 90 | so->so_state = SS_PRIV; |
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| 91 | so->so_uid = 0; |
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| 92 | so->so_proto = prp; |
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| 93 | error = (*prp->pr_usrreqs->pru_attach)(so, proto); |
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| 94 | if (error) { |
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| 95 | so->so_state |= SS_NOFDREF; |
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| 96 | sofree(so); |
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| 97 | return (error); |
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| 98 | } |
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| 99 | *aso = so; |
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| 100 | return (0); |
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| 101 | } |
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| 102 | |
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| 103 | int |
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| 104 | sobind(so, nam) |
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| 105 | struct socket *so; |
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| 106 | struct mbuf *nam; |
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| 107 | { |
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| 108 | int s = splnet(); |
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| 109 | int error; |
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| 110 | |
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| 111 | error = (*so->so_proto->pr_usrreqs->pru_bind)(so, nam); |
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| 112 | splx(s); |
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| 113 | return (error); |
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| 114 | } |
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| 115 | |
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| 116 | int |
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| 117 | solisten(so, backlog) |
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| 118 | register struct socket *so; |
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| 119 | int backlog; |
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| 120 | { |
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| 121 | int s = splnet(), error; |
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| 122 | |
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| 123 | error = (*so->so_proto->pr_usrreqs->pru_listen)(so); |
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| 124 | if (error) { |
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| 125 | splx(s); |
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| 126 | return (error); |
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| 127 | } |
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| 128 | if (so->so_comp.tqh_first == NULL) |
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| 129 | so->so_options |= SO_ACCEPTCONN; |
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| 130 | if (backlog < 0 || backlog > somaxconn) |
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| 131 | backlog = somaxconn; |
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| 132 | so->so_qlimit = backlog; |
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| 133 | splx(s); |
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| 134 | return (0); |
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| 135 | } |
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| 136 | |
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| 137 | void |
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| 138 | sofree(so) |
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| 139 | register struct socket *so; |
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| 140 | { |
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| 141 | struct socket *head = so->so_head; |
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| 142 | |
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| 143 | if (so->so_pcb || (so->so_state & SS_NOFDREF) == 0) |
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| 144 | return; |
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| 145 | if (head != NULL) { |
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| 146 | if (so->so_state & SS_INCOMP) { |
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| 147 | TAILQ_REMOVE(&head->so_incomp, so, so_list); |
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| 148 | head->so_incqlen--; |
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| 149 | } else if (so->so_state & SS_COMP) { |
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| 150 | TAILQ_REMOVE(&head->so_comp, so, so_list); |
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| 151 | } else { |
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| 152 | panic("sofree: not queued"); |
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| 153 | } |
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| 154 | head->so_qlen--; |
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| 155 | so->so_state &= ~(SS_INCOMP|SS_COMP); |
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| 156 | so->so_head = NULL; |
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| 157 | } |
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| 158 | sbrelease(&so->so_snd); |
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| 159 | sorflush(so); |
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| 160 | FREE(so, M_SOCKET); |
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| 161 | } |
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| 162 | |
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| 163 | /* |
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| 164 | * Close a socket on last file table reference removal. |
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| 165 | * Initiate disconnect if connected. |
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| 166 | * Free socket when disconnect complete. |
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| 167 | */ |
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| 168 | int |
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| 169 | soclose(so) |
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| 170 | register struct socket *so; |
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| 171 | { |
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| 172 | int s = splnet(); /* conservative */ |
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| 173 | int error = 0; |
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| 174 | |
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| 175 | if (so->so_options & SO_ACCEPTCONN) { |
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| 176 | struct socket *sp, *sonext; |
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| 177 | |
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| 178 | for (sp = so->so_incomp.tqh_first; sp != NULL; sp = sonext) { |
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| 179 | sonext = sp->so_list.tqe_next; |
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| 180 | (void) soabort(sp); |
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| 181 | } |
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| 182 | for (sp = so->so_comp.tqh_first; sp != NULL; sp = sonext) { |
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| 183 | sonext = sp->so_list.tqe_next; |
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| 184 | (void) soabort(sp); |
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| 185 | } |
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| 186 | } |
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| 187 | if (so->so_pcb == 0) |
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| 188 | goto discard; |
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| 189 | if (so->so_state & SS_ISCONNECTED) { |
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| 190 | if ((so->so_state & SS_ISDISCONNECTING) == 0) { |
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| 191 | error = sodisconnect(so); |
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| 192 | if (error) |
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| 193 | goto drop; |
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| 194 | } |
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| 195 | if (so->so_options & SO_LINGER) { |
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| 196 | if ((so->so_state & SS_ISDISCONNECTING) && |
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| 197 | (so->so_state & SS_NBIO)) |
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| 198 | goto drop; |
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| 199 | while (so->so_state & SS_ISCONNECTED) { |
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| 200 | soconnsleep (so); |
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| 201 | } |
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| 202 | } |
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| 203 | } |
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| 204 | drop: |
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| 205 | if (so->so_pcb) { |
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| 206 | int error2 = (*so->so_proto->pr_usrreqs->pru_detach)(so); |
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| 207 | if (error == 0) |
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| 208 | error = error2; |
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| 209 | } |
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| 210 | discard: |
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| 211 | if (so->so_state & SS_NOFDREF) |
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| 212 | panic("soclose: NOFDREF"); |
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| 213 | so->so_state |= SS_NOFDREF; |
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| 214 | sofree(so); |
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| 215 | splx(s); |
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| 216 | return (error); |
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| 217 | } |
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| 218 | |
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| 219 | /* |
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| 220 | * Must be called at splnet... |
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| 221 | */ |
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| 222 | int |
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| 223 | soabort(so) |
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| 224 | struct socket *so; |
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| 225 | { |
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| 226 | |
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| 227 | return (*so->so_proto->pr_usrreqs->pru_abort)(so); |
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| 228 | } |
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| 229 | |
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| 230 | int |
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| 231 | soaccept(so, nam) |
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| 232 | register struct socket *so; |
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| 233 | struct mbuf *nam; |
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| 234 | { |
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| 235 | int s = splnet(); |
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| 236 | int error; |
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| 237 | |
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| 238 | if ((so->so_state & SS_NOFDREF) == 0) |
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| 239 | panic("soaccept: !NOFDREF"); |
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| 240 | so->so_state &= ~SS_NOFDREF; |
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| 241 | error = (*so->so_proto->pr_usrreqs->pru_accept)(so, nam); |
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| 242 | splx(s); |
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| 243 | return (error); |
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| 244 | } |
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| 245 | |
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| 246 | int |
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| 247 | soconnect(so, nam) |
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| 248 | register struct socket *so; |
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| 249 | struct mbuf *nam; |
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| 250 | { |
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| 251 | int s; |
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| 252 | int error; |
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| 253 | |
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| 254 | if (so->so_options & SO_ACCEPTCONN) |
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| 255 | return (EOPNOTSUPP); |
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| 256 | s = splnet(); |
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| 257 | /* |
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| 258 | * If protocol is connection-based, can only connect once. |
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| 259 | * Otherwise, if connected, try to disconnect first. |
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| 260 | * This allows user to disconnect by connecting to, e.g., |
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| 261 | * a null address. |
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| 262 | */ |
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| 263 | if (so->so_state & (SS_ISCONNECTED|SS_ISCONNECTING) && |
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| 264 | ((so->so_proto->pr_flags & PR_CONNREQUIRED) || |
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| 265 | (error = sodisconnect(so)))) |
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| 266 | error = EISCONN; |
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| 267 | else |
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| 268 | error = (*so->so_proto->pr_usrreqs->pru_connect)(so, nam); |
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| 269 | splx(s); |
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| 270 | return (error); |
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| 271 | } |
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| 272 | |
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| 273 | int |
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| 274 | soconnect2(so1, so2) |
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| 275 | register struct socket *so1; |
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| 276 | struct socket *so2; |
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| 277 | { |
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| 278 | int s = splnet(); |
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| 279 | int error; |
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| 280 | |
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| 281 | error = (*so1->so_proto->pr_usrreqs->pru_connect2)(so1, so2); |
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| 282 | splx(s); |
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| 283 | return (error); |
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| 284 | } |
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| 285 | |
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| 286 | int |
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| 287 | sodisconnect(so) |
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| 288 | register struct socket *so; |
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| 289 | { |
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| 290 | int s = splnet(); |
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| 291 | int error; |
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| 292 | |
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| 293 | if ((so->so_state & SS_ISCONNECTED) == 0) { |
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| 294 | error = ENOTCONN; |
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| 295 | goto bad; |
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| 296 | } |
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| 297 | if (so->so_state & SS_ISDISCONNECTING) { |
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| 298 | error = EALREADY; |
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| 299 | goto bad; |
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| 300 | } |
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| 301 | error = (*so->so_proto->pr_usrreqs->pru_disconnect)(so); |
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| 302 | bad: |
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| 303 | splx(s); |
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| 304 | return (error); |
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| 305 | } |
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| 306 | |
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| 307 | #define SBLOCKWAIT(f) (((f) & MSG_DONTWAIT) ? M_NOWAIT : M_WAITOK) |
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| 308 | /* |
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| 309 | * Send on a socket. |
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| 310 | * If send must go all at once and message is larger than |
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| 311 | * send buffering, then hard error. |
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| 312 | * Lock against other senders. |
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| 313 | * If must go all at once and not enough room now, then |
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| 314 | * inform user that this would block and do nothing. |
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| 315 | * Otherwise, if nonblocking, send as much as possible. |
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| 316 | * The data to be sent is described by "uio" if nonzero, |
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| 317 | * otherwise by the mbuf chain "top" (which must be null |
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| 318 | * if uio is not). Data provided in mbuf chain must be small |
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| 319 | * enough to send all at once. |
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| 320 | * |
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| 321 | * Returns nonzero on error, timeout or signal; callers |
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| 322 | * must check for short counts if EINTR/ERESTART are returned. |
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| 323 | * Data and control buffers are freed on return. |
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| 324 | */ |
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| 325 | int |
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| 326 | sosend(so, addr, uio, top, control, flags) |
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| 327 | register struct socket *so; |
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| 328 | struct mbuf *addr; |
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| 329 | struct uio *uio; |
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| 330 | struct mbuf *top; |
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| 331 | struct mbuf *control; |
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| 332 | int flags; |
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| 333 | { |
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| 334 | struct mbuf **mp; |
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| 335 | register struct mbuf *m; |
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| 336 | register long space, len, resid; |
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| 337 | int clen = 0, error, s, dontroute, mlen; |
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| 338 | int atomic = sosendallatonce(so) || top; |
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| 339 | |
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| 340 | if (uio) |
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| 341 | resid = uio->uio_resid; |
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| 342 | else |
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| 343 | resid = top->m_pkthdr.len; |
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| 344 | /* |
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| 345 | * In theory resid should be unsigned. |
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| 346 | * However, space must be signed, as it might be less than 0 |
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| 347 | * if we over-committed, and we must use a signed comparison |
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| 348 | * of space and resid. On the other hand, a negative resid |
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| 349 | * causes us to loop sending 0-length segments to the protocol. |
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| 350 | * |
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| 351 | * Also check to make sure that MSG_EOR isn't used on SOCK_STREAM |
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| 352 | * type sockets since that's an error. |
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| 353 | */ |
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[ff0f694d] | 354 | if ((resid < 0) || (so->so_type == SOCK_STREAM && (flags & MSG_EOR))) { |
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[39e6e65a] | 355 | error = EINVAL; |
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| 356 | goto out; |
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| 357 | } |
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| 358 | |
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| 359 | dontroute = |
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| 360 | (flags & MSG_DONTROUTE) && (so->so_options & SO_DONTROUTE) == 0 && |
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| 361 | (so->so_proto->pr_flags & PR_ATOMIC); |
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| 362 | if (control) |
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| 363 | clen = control->m_len; |
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| 364 | #define snderr(errno) { error = errno; splx(s); goto release; } |
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| 365 | |
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| 366 | restart: |
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| 367 | error = sblock(&so->so_snd, SBLOCKWAIT(flags)); |
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| 368 | if (error) |
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| 369 | goto out; |
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| 370 | do { |
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| 371 | s = splnet(); |
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| 372 | if (so->so_state & SS_CANTSENDMORE) |
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| 373 | snderr(EPIPE); |
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| 374 | if (so->so_error) { |
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| 375 | error = so->so_error; |
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| 376 | so->so_error = 0; |
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| 377 | splx(s); |
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| 378 | goto release; |
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| 379 | } |
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| 380 | if ((so->so_state & SS_ISCONNECTED) == 0) { |
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| 381 | /* |
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| 382 | * `sendto' and `sendmsg' is allowed on a connection- |
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| 383 | * based socket if it supports implied connect. |
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| 384 | * Return ENOTCONN if not connected and no address is |
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| 385 | * supplied. |
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| 386 | */ |
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| 387 | if ((so->so_proto->pr_flags & PR_CONNREQUIRED) && |
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| 388 | (so->so_proto->pr_flags & PR_IMPLOPCL) == 0) { |
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| 389 | if ((so->so_state & SS_ISCONFIRMING) == 0 && |
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| 390 | !(resid == 0 && clen != 0)) |
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| 391 | snderr(ENOTCONN); |
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| 392 | } else if (addr == 0) |
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| 393 | snderr(so->so_proto->pr_flags & PR_CONNREQUIRED ? |
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| 394 | ENOTCONN : EDESTADDRREQ); |
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| 395 | } |
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| 396 | space = sbspace(&so->so_snd); |
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| 397 | if (flags & MSG_OOB) |
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| 398 | space += 1024; |
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| 399 | if ((atomic && resid > so->so_snd.sb_hiwat) || |
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| 400 | clen > so->so_snd.sb_hiwat) |
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| 401 | snderr(EMSGSIZE); |
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| 402 | if (space < resid + clen && uio && |
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| 403 | (atomic || space < so->so_snd.sb_lowat || space < clen)) { |
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| 404 | if (so->so_state & SS_NBIO) |
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| 405 | snderr(EWOULDBLOCK); |
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| 406 | sbunlock(&so->so_snd); |
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| 407 | error = sbwait(&so->so_snd); |
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| 408 | splx(s); |
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| 409 | if (error) |
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| 410 | goto out; |
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| 411 | goto restart; |
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| 412 | } |
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| 413 | splx(s); |
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| 414 | mp = ⊤ |
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| 415 | space -= clen; |
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| 416 | do { |
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| 417 | if (uio == NULL) { |
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| 418 | /* |
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| 419 | * Data is prepackaged in "top". |
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| 420 | */ |
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| 421 | resid = 0; |
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| 422 | if (flags & MSG_EOR) |
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| 423 | top->m_flags |= M_EOR; |
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| 424 | } else do { |
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| 425 | if (top == 0) { |
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| 426 | MGETHDR(m, M_WAIT, MT_DATA); |
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| 427 | mlen = MHLEN; |
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| 428 | m->m_pkthdr.len = 0; |
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| 429 | m->m_pkthdr.rcvif = (struct ifnet *)0; |
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| 430 | } else { |
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| 431 | MGET(m, M_WAIT, MT_DATA); |
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| 432 | mlen = MLEN; |
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| 433 | } |
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| 434 | if (resid >= MINCLSIZE) { |
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| 435 | MCLGET(m, M_WAIT); |
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| 436 | if ((m->m_flags & M_EXT) == 0) |
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| 437 | goto nopages; |
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| 438 | mlen = MCLBYTES; |
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| 439 | len = min(min(mlen, resid), space); |
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| 440 | } else { |
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| 441 | nopages: |
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| 442 | len = min(min(mlen, resid), space); |
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| 443 | /* |
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| 444 | * For datagram protocols, leave room |
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| 445 | * for protocol headers in first mbuf. |
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| 446 | */ |
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| 447 | if (atomic && top == 0 && len < mlen) |
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| 448 | MH_ALIGN(m, len); |
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| 449 | } |
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| 450 | space -= len; |
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| 451 | error = uiomove(mtod(m, caddr_t), (int)len, uio); |
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| 452 | resid = uio->uio_resid; |
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| 453 | m->m_len = len; |
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| 454 | *mp = m; |
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| 455 | top->m_pkthdr.len += len; |
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| 456 | if (error) |
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| 457 | goto release; |
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| 458 | mp = &m->m_next; |
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| 459 | if (resid <= 0) { |
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| 460 | if (flags & MSG_EOR) |
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| 461 | top->m_flags |= M_EOR; |
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| 462 | break; |
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| 463 | } |
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| 464 | } while (space > 0 && atomic); |
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| 465 | if (dontroute) |
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| 466 | so->so_options |= SO_DONTROUTE; |
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| 467 | s = splnet(); /* XXX */ |
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| 468 | error = (*so->so_proto->pr_usrreqs->pru_send)(so, |
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| 469 | (flags & MSG_OOB) ? PRUS_OOB : |
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| 470 | /* |
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| 471 | * If the user set MSG_EOF, the protocol |
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| 472 | * understands this flag and nothing left to |
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| 473 | * send then use PRU_SEND_EOF instead of PRU_SEND. |
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| 474 | */ |
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| 475 | ((flags & MSG_EOF) && |
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| 476 | (so->so_proto->pr_flags & PR_IMPLOPCL) && |
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| 477 | (resid <= 0)) ? |
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| 478 | PRUS_EOF : 0, |
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| 479 | top, addr, control); |
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| 480 | splx(s); |
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| 481 | if (dontroute) |
---|
| 482 | so->so_options &= ~SO_DONTROUTE; |
---|
| 483 | clen = 0; |
---|
| 484 | control = 0; |
---|
| 485 | top = 0; |
---|
| 486 | mp = ⊤ |
---|
| 487 | if (error) |
---|
| 488 | goto release; |
---|
| 489 | } while (resid && space > 0); |
---|
| 490 | } while (resid); |
---|
| 491 | |
---|
| 492 | release: |
---|
| 493 | sbunlock(&so->so_snd); |
---|
| 494 | out: |
---|
| 495 | if (top) |
---|
| 496 | m_freem(top); |
---|
| 497 | if (control) |
---|
| 498 | m_freem(control); |
---|
| 499 | return (error); |
---|
| 500 | } |
---|
| 501 | |
---|
| 502 | /* |
---|
| 503 | * Implement receive operations on a socket. |
---|
| 504 | * We depend on the way that records are added to the sockbuf |
---|
| 505 | * by sbappend*. In particular, each record (mbufs linked through m_next) |
---|
| 506 | * must begin with an address if the protocol so specifies, |
---|
| 507 | * followed by an optional mbuf or mbufs containing ancillary data, |
---|
| 508 | * and then zero or more mbufs of data. |
---|
| 509 | * In order to avoid blocking network interrupts for the entire time here, |
---|
| 510 | * we splx() while doing the actual copy to user space. |
---|
| 511 | * Although the sockbuf is locked, new data may still be appended, |
---|
| 512 | * and thus we must maintain consistency of the sockbuf during that time. |
---|
| 513 | * |
---|
| 514 | * The caller may receive the data as a single mbuf chain by supplying |
---|
| 515 | * an mbuf **mp0 for use in returning the chain. The uio is then used |
---|
| 516 | * only for the count in uio_resid. |
---|
| 517 | */ |
---|
| 518 | int |
---|
| 519 | soreceive(so, paddr, uio, mp0, controlp, flagsp) |
---|
| 520 | register struct socket *so; |
---|
| 521 | struct mbuf **paddr; |
---|
| 522 | struct uio *uio; |
---|
| 523 | struct mbuf **mp0; |
---|
| 524 | struct mbuf **controlp; |
---|
| 525 | int *flagsp; |
---|
| 526 | { |
---|
| 527 | register struct mbuf *m, **mp; |
---|
| 528 | register int flags, len, error, s, offset; |
---|
| 529 | struct protosw *pr = so->so_proto; |
---|
| 530 | struct mbuf *nextrecord; |
---|
| 531 | int moff, type = 0; |
---|
| 532 | int orig_resid = uio->uio_resid; |
---|
| 533 | |
---|
| 534 | mp = mp0; |
---|
| 535 | if (paddr) |
---|
| 536 | *paddr = 0; |
---|
| 537 | if (controlp) |
---|
| 538 | *controlp = 0; |
---|
| 539 | if (flagsp) |
---|
| 540 | flags = *flagsp &~ MSG_EOR; |
---|
| 541 | else |
---|
| 542 | flags = 0; |
---|
| 543 | if (flags & MSG_OOB) { |
---|
| 544 | m = m_get(M_WAIT, MT_DATA); |
---|
| 545 | error = (*pr->pr_usrreqs->pru_rcvoob)(so, m, flags & MSG_PEEK); |
---|
| 546 | if (error) |
---|
| 547 | goto bad; |
---|
| 548 | do { |
---|
| 549 | error = uiomove(mtod(m, caddr_t), |
---|
| 550 | (int) min(uio->uio_resid, m->m_len), uio); |
---|
| 551 | m = m_free(m); |
---|
| 552 | } while (uio->uio_resid && error == 0 && m); |
---|
| 553 | bad: |
---|
| 554 | if (m) |
---|
| 555 | m_freem(m); |
---|
| 556 | return (error); |
---|
| 557 | } |
---|
| 558 | if (mp) |
---|
| 559 | *mp = (struct mbuf *)0; |
---|
| 560 | if (so->so_state & SS_ISCONFIRMING && uio->uio_resid) |
---|
| 561 | (*pr->pr_usrreqs->pru_rcvd)(so, 0); |
---|
| 562 | |
---|
| 563 | restart: |
---|
| 564 | error = sblock(&so->so_rcv, SBLOCKWAIT(flags)); |
---|
| 565 | if (error) |
---|
| 566 | return (error); |
---|
| 567 | s = splnet(); |
---|
| 568 | |
---|
| 569 | m = so->so_rcv.sb_mb; |
---|
| 570 | /* |
---|
| 571 | * If we have less data than requested, block awaiting more |
---|
| 572 | * (subject to any timeout) if: |
---|
| 573 | * 1. the current count is less than the low water mark, or |
---|
| 574 | * 2. MSG_WAITALL is set, and it is possible to do the entire |
---|
| 575 | * receive operation at once if we block (resid <= hiwat). |
---|
| 576 | * 3. MSG_DONTWAIT is not set |
---|
| 577 | * If MSG_WAITALL is set but resid is larger than the receive buffer, |
---|
| 578 | * we have to do the receive in sections, and thus risk returning |
---|
| 579 | * a short count if a timeout or signal occurs after we start. |
---|
| 580 | */ |
---|
| 581 | if (m == 0 || (((flags & MSG_DONTWAIT) == 0 && |
---|
| 582 | so->so_rcv.sb_cc < uio->uio_resid) && |
---|
| 583 | (so->so_rcv.sb_cc < so->so_rcv.sb_lowat || |
---|
| 584 | ((flags & MSG_WAITALL) && uio->uio_resid <= so->so_rcv.sb_hiwat)) && |
---|
| 585 | m->m_nextpkt == 0 && (pr->pr_flags & PR_ATOMIC) == 0)) { |
---|
| 586 | #ifdef DIAGNOSTIC |
---|
| 587 | if (m == 0 && so->so_rcv.sb_cc) |
---|
| 588 | panic("receive 1"); |
---|
| 589 | #endif |
---|
| 590 | if (so->so_error) { |
---|
| 591 | if (m) |
---|
| 592 | goto dontblock; |
---|
| 593 | error = so->so_error; |
---|
| 594 | if ((flags & MSG_PEEK) == 0) |
---|
| 595 | so->so_error = 0; |
---|
| 596 | goto release; |
---|
| 597 | } |
---|
| 598 | if (so->so_state & SS_CANTRCVMORE) { |
---|
| 599 | if (m) |
---|
| 600 | goto dontblock; |
---|
| 601 | else |
---|
| 602 | goto release; |
---|
| 603 | } |
---|
| 604 | for (; m; m = m->m_next) |
---|
| 605 | if (m->m_type == MT_OOBDATA || (m->m_flags & M_EOR)) { |
---|
| 606 | m = so->so_rcv.sb_mb; |
---|
| 607 | goto dontblock; |
---|
| 608 | } |
---|
| 609 | if ((so->so_state & (SS_ISCONNECTED|SS_ISCONNECTING)) == 0 && |
---|
| 610 | (so->so_proto->pr_flags & PR_CONNREQUIRED)) { |
---|
| 611 | error = ENOTCONN; |
---|
| 612 | goto release; |
---|
| 613 | } |
---|
| 614 | if (uio->uio_resid == 0) |
---|
| 615 | goto release; |
---|
| 616 | if ((so->so_state & SS_NBIO) || (flags & MSG_DONTWAIT)) { |
---|
| 617 | error = EWOULDBLOCK; |
---|
| 618 | goto release; |
---|
| 619 | } |
---|
| 620 | sbunlock(&so->so_rcv); |
---|
| 621 | error = sbwait(&so->so_rcv); |
---|
| 622 | splx(s); |
---|
| 623 | if (error) |
---|
| 624 | return (error); |
---|
| 625 | goto restart; |
---|
| 626 | } |
---|
| 627 | dontblock: |
---|
| 628 | nextrecord = m->m_nextpkt; |
---|
| 629 | if (pr->pr_flags & PR_ADDR) { |
---|
| 630 | #ifdef DIAGNOSTIC |
---|
| 631 | if (m->m_type != MT_SONAME) |
---|
| 632 | panic("receive 1a"); |
---|
| 633 | #endif |
---|
| 634 | orig_resid = 0; |
---|
| 635 | if (flags & MSG_PEEK) { |
---|
| 636 | if (paddr) |
---|
| 637 | *paddr = m_copy(m, 0, m->m_len); |
---|
| 638 | m = m->m_next; |
---|
| 639 | } else { |
---|
| 640 | sbfree(&so->so_rcv, m); |
---|
| 641 | if (paddr) { |
---|
| 642 | *paddr = m; |
---|
| 643 | so->so_rcv.sb_mb = m->m_next; |
---|
| 644 | m->m_next = 0; |
---|
| 645 | m = so->so_rcv.sb_mb; |
---|
| 646 | } else { |
---|
| 647 | MFREE(m, so->so_rcv.sb_mb); |
---|
| 648 | m = so->so_rcv.sb_mb; |
---|
| 649 | } |
---|
| 650 | } |
---|
| 651 | } |
---|
| 652 | while (m && m->m_type == MT_CONTROL && error == 0) { |
---|
| 653 | if (flags & MSG_PEEK) { |
---|
| 654 | if (controlp) |
---|
| 655 | *controlp = m_copy(m, 0, m->m_len); |
---|
| 656 | m = m->m_next; |
---|
| 657 | } else { |
---|
| 658 | sbfree(&so->so_rcv, m); |
---|
| 659 | if (controlp) { |
---|
| 660 | if (pr->pr_domain->dom_externalize && |
---|
| 661 | mtod(m, struct cmsghdr *)->cmsg_type == |
---|
| 662 | SCM_RIGHTS) |
---|
| 663 | error = (*pr->pr_domain->dom_externalize)(m); |
---|
| 664 | *controlp = m; |
---|
| 665 | so->so_rcv.sb_mb = m->m_next; |
---|
| 666 | m->m_next = 0; |
---|
| 667 | m = so->so_rcv.sb_mb; |
---|
| 668 | } else { |
---|
| 669 | MFREE(m, so->so_rcv.sb_mb); |
---|
| 670 | m = so->so_rcv.sb_mb; |
---|
| 671 | } |
---|
| 672 | } |
---|
| 673 | if (controlp) { |
---|
| 674 | orig_resid = 0; |
---|
| 675 | controlp = &(*controlp)->m_next; |
---|
| 676 | } |
---|
| 677 | } |
---|
| 678 | if (m) { |
---|
| 679 | if ((flags & MSG_PEEK) == 0) |
---|
| 680 | m->m_nextpkt = nextrecord; |
---|
| 681 | type = m->m_type; |
---|
| 682 | if (type == MT_OOBDATA) |
---|
| 683 | flags |= MSG_OOB; |
---|
| 684 | } |
---|
| 685 | moff = 0; |
---|
| 686 | offset = 0; |
---|
| 687 | while (m && uio->uio_resid > 0 && error == 0) { |
---|
| 688 | if (m->m_type == MT_OOBDATA) { |
---|
| 689 | if (type != MT_OOBDATA) |
---|
| 690 | break; |
---|
| 691 | } else if (type == MT_OOBDATA) |
---|
| 692 | break; |
---|
| 693 | #ifdef DIAGNOSTIC |
---|
| 694 | else if (m->m_type != MT_DATA && m->m_type != MT_HEADER) |
---|
| 695 | panic("receive 3"); |
---|
| 696 | #endif |
---|
| 697 | so->so_state &= ~SS_RCVATMARK; |
---|
| 698 | len = uio->uio_resid; |
---|
| 699 | if (so->so_oobmark && len > so->so_oobmark - offset) |
---|
| 700 | len = so->so_oobmark - offset; |
---|
| 701 | if (len > m->m_len - moff) |
---|
| 702 | len = m->m_len - moff; |
---|
| 703 | /* |
---|
| 704 | * If mp is set, just pass back the mbufs. |
---|
| 705 | * Otherwise copy them out via the uio, then free. |
---|
| 706 | * Sockbuf must be consistent here (points to current mbuf, |
---|
| 707 | * it points to next record) when we drop priority; |
---|
| 708 | * we must note any additions to the sockbuf when we |
---|
| 709 | * block interrupts again. |
---|
| 710 | */ |
---|
| 711 | if (mp == 0) { |
---|
| 712 | splx(s); |
---|
| 713 | error = uiomove(mtod(m, caddr_t) + moff, (int)len, uio); |
---|
| 714 | s = splnet(); |
---|
| 715 | if (error) |
---|
| 716 | goto release; |
---|
| 717 | } else |
---|
| 718 | uio->uio_resid -= len; |
---|
| 719 | if (len == m->m_len - moff) { |
---|
| 720 | if (m->m_flags & M_EOR) |
---|
| 721 | flags |= MSG_EOR; |
---|
| 722 | if (flags & MSG_PEEK) { |
---|
| 723 | m = m->m_next; |
---|
| 724 | moff = 0; |
---|
| 725 | } else { |
---|
| 726 | nextrecord = m->m_nextpkt; |
---|
| 727 | sbfree(&so->so_rcv, m); |
---|
| 728 | if (mp) { |
---|
| 729 | *mp = m; |
---|
| 730 | mp = &m->m_next; |
---|
| 731 | so->so_rcv.sb_mb = m = m->m_next; |
---|
| 732 | *mp = (struct mbuf *)0; |
---|
| 733 | } else { |
---|
| 734 | MFREE(m, so->so_rcv.sb_mb); |
---|
| 735 | m = so->so_rcv.sb_mb; |
---|
| 736 | } |
---|
| 737 | if (m) |
---|
| 738 | m->m_nextpkt = nextrecord; |
---|
| 739 | } |
---|
| 740 | } else { |
---|
| 741 | if (flags & MSG_PEEK) |
---|
| 742 | moff += len; |
---|
| 743 | else { |
---|
| 744 | if (mp) |
---|
| 745 | *mp = m_copym(m, 0, len, M_WAIT); |
---|
| 746 | m->m_data += len; |
---|
| 747 | m->m_len -= len; |
---|
| 748 | so->so_rcv.sb_cc -= len; |
---|
| 749 | } |
---|
| 750 | } |
---|
| 751 | if (so->so_oobmark) { |
---|
| 752 | if ((flags & MSG_PEEK) == 0) { |
---|
| 753 | so->so_oobmark -= len; |
---|
| 754 | if (so->so_oobmark == 0) { |
---|
| 755 | so->so_state |= SS_RCVATMARK; |
---|
| 756 | break; |
---|
| 757 | } |
---|
| 758 | } else { |
---|
| 759 | offset += len; |
---|
| 760 | if (offset == so->so_oobmark) |
---|
| 761 | break; |
---|
| 762 | } |
---|
| 763 | } |
---|
| 764 | if (flags & MSG_EOR) |
---|
| 765 | break; |
---|
| 766 | /* |
---|
| 767 | * If the MSG_WAITALL flag is set (for non-atomic socket), |
---|
| 768 | * we must not quit until "uio->uio_resid == 0" or an error |
---|
| 769 | * termination. If a signal/timeout occurs, return |
---|
| 770 | * with a short count but without error. |
---|
| 771 | * Keep sockbuf locked against other readers. |
---|
| 772 | */ |
---|
| 773 | while (flags & MSG_WAITALL && m == 0 && uio->uio_resid > 0 && |
---|
| 774 | !sosendallatonce(so) && !nextrecord) { |
---|
| 775 | if (so->so_error || so->so_state & SS_CANTRCVMORE) |
---|
| 776 | break; |
---|
| 777 | error = sbwait(&so->so_rcv); |
---|
| 778 | if (error) { |
---|
| 779 | sbunlock(&so->so_rcv); |
---|
| 780 | splx(s); |
---|
| 781 | return (0); |
---|
| 782 | } |
---|
| 783 | m = so->so_rcv.sb_mb; |
---|
| 784 | if (m) |
---|
| 785 | nextrecord = m->m_nextpkt; |
---|
| 786 | } |
---|
| 787 | } |
---|
| 788 | |
---|
| 789 | if (m && pr->pr_flags & PR_ATOMIC) { |
---|
| 790 | flags |= MSG_TRUNC; |
---|
| 791 | if ((flags & MSG_PEEK) == 0) |
---|
| 792 | (void) sbdroprecord(&so->so_rcv); |
---|
| 793 | } |
---|
| 794 | if ((flags & MSG_PEEK) == 0) { |
---|
| 795 | if (m == 0) |
---|
| 796 | so->so_rcv.sb_mb = nextrecord; |
---|
| 797 | if (pr->pr_flags & PR_WANTRCVD && so->so_pcb) |
---|
| 798 | (*pr->pr_usrreqs->pru_rcvd)(so, flags); |
---|
| 799 | } |
---|
| 800 | if (orig_resid == uio->uio_resid && orig_resid && |
---|
| 801 | (flags & MSG_EOR) == 0 && (so->so_state & SS_CANTRCVMORE) == 0) { |
---|
| 802 | sbunlock(&so->so_rcv); |
---|
| 803 | splx(s); |
---|
| 804 | goto restart; |
---|
| 805 | } |
---|
| 806 | |
---|
| 807 | if (flagsp) |
---|
| 808 | *flagsp |= flags; |
---|
| 809 | release: |
---|
| 810 | sbunlock(&so->so_rcv); |
---|
| 811 | splx(s); |
---|
| 812 | return (error); |
---|
| 813 | } |
---|
| 814 | |
---|
| 815 | int |
---|
| 816 | soshutdown(so, how) |
---|
| 817 | register struct socket *so; |
---|
| 818 | register int how; |
---|
| 819 | { |
---|
| 820 | register struct protosw *pr = so->so_proto; |
---|
| 821 | |
---|
| 822 | how++; |
---|
| 823 | if (how & FREAD) |
---|
| 824 | sorflush(so); |
---|
| 825 | if (how & FWRITE) |
---|
| 826 | return ((*pr->pr_usrreqs->pru_shutdown)(so)); |
---|
| 827 | return (0); |
---|
| 828 | } |
---|
| 829 | |
---|
| 830 | void |
---|
| 831 | sorflush(so) |
---|
| 832 | register struct socket *so; |
---|
| 833 | { |
---|
| 834 | register struct sockbuf *sb = &so->so_rcv; |
---|
| 835 | register struct protosw *pr = so->so_proto; |
---|
| 836 | register int s; |
---|
| 837 | struct sockbuf asb; |
---|
| 838 | |
---|
| 839 | sb->sb_flags |= SB_NOINTR; |
---|
| 840 | (void) sblock(sb, M_WAITOK); |
---|
| 841 | s = splimp(); |
---|
| 842 | socantrcvmore(so); |
---|
| 843 | sbunlock(sb); |
---|
| 844 | asb = *sb; |
---|
| 845 | bzero((caddr_t)sb, sizeof (*sb)); |
---|
| 846 | splx(s); |
---|
| 847 | if (pr->pr_flags & PR_RIGHTS && pr->pr_domain->dom_dispose) |
---|
| 848 | (*pr->pr_domain->dom_dispose)(asb.sb_mb); |
---|
| 849 | sbrelease(&asb); |
---|
| 850 | } |
---|
| 851 | |
---|
| 852 | int |
---|
| 853 | sosetopt(so, level, optname, m0) |
---|
| 854 | register struct socket *so; |
---|
| 855 | int level, optname; |
---|
| 856 | struct mbuf *m0; |
---|
| 857 | { |
---|
| 858 | int error = 0; |
---|
| 859 | register struct mbuf *m = m0; |
---|
| 860 | |
---|
| 861 | if (level != SOL_SOCKET) { |
---|
| 862 | if (so->so_proto && so->so_proto->pr_ctloutput) |
---|
| 863 | return ((*so->so_proto->pr_ctloutput) |
---|
| 864 | (PRCO_SETOPT, so, level, optname, &m0)); |
---|
| 865 | error = ENOPROTOOPT; |
---|
| 866 | } else { |
---|
| 867 | switch (optname) { |
---|
| 868 | |
---|
| 869 | case SO_LINGER: |
---|
| 870 | if (m == NULL || m->m_len != sizeof (struct linger)) { |
---|
| 871 | error = EINVAL; |
---|
| 872 | goto bad; |
---|
| 873 | } |
---|
| 874 | so->so_linger = mtod(m, struct linger *)->l_linger; |
---|
| 875 | /* fall thru... */ |
---|
| 876 | |
---|
| 877 | case SO_DEBUG: |
---|
| 878 | case SO_KEEPALIVE: |
---|
| 879 | case SO_DONTROUTE: |
---|
| 880 | case SO_USELOOPBACK: |
---|
| 881 | case SO_BROADCAST: |
---|
| 882 | case SO_REUSEADDR: |
---|
| 883 | case SO_REUSEPORT: |
---|
| 884 | case SO_OOBINLINE: |
---|
| 885 | case SO_TIMESTAMP: |
---|
| 886 | if (m == NULL || m->m_len < sizeof (int)) { |
---|
| 887 | error = EINVAL; |
---|
| 888 | goto bad; |
---|
| 889 | } |
---|
| 890 | if (*mtod(m, int *)) |
---|
| 891 | so->so_options |= optname; |
---|
| 892 | else |
---|
| 893 | so->so_options &= ~optname; |
---|
| 894 | break; |
---|
| 895 | |
---|
| 896 | case SO_SNDBUF: |
---|
| 897 | case SO_RCVBUF: |
---|
| 898 | case SO_SNDLOWAT: |
---|
| 899 | case SO_RCVLOWAT: |
---|
| 900 | { |
---|
| 901 | int optval; |
---|
| 902 | |
---|
| 903 | if (m == NULL || m->m_len < sizeof (int)) { |
---|
| 904 | error = EINVAL; |
---|
| 905 | goto bad; |
---|
| 906 | } |
---|
| 907 | |
---|
| 908 | /* |
---|
| 909 | * Values < 1 make no sense for any of these |
---|
| 910 | * options, so disallow them. |
---|
| 911 | */ |
---|
| 912 | optval = *mtod(m, int *); |
---|
| 913 | if (optval < 1) { |
---|
| 914 | error = EINVAL; |
---|
| 915 | goto bad; |
---|
| 916 | } |
---|
| 917 | |
---|
| 918 | switch (optname) { |
---|
| 919 | |
---|
| 920 | case SO_SNDBUF: |
---|
| 921 | case SO_RCVBUF: |
---|
| 922 | if (sbreserve(optname == SO_SNDBUF ? |
---|
| 923 | &so->so_snd : &so->so_rcv, |
---|
| 924 | (u_long) optval) == 0) { |
---|
| 925 | error = ENOBUFS; |
---|
| 926 | goto bad; |
---|
| 927 | } |
---|
| 928 | break; |
---|
| 929 | |
---|
| 930 | /* |
---|
| 931 | * Make sure the low-water is never greater than |
---|
| 932 | * the high-water. |
---|
| 933 | */ |
---|
| 934 | case SO_SNDLOWAT: |
---|
| 935 | so->so_snd.sb_lowat = |
---|
| 936 | (optval > so->so_snd.sb_hiwat) ? |
---|
| 937 | so->so_snd.sb_hiwat : optval; |
---|
| 938 | break; |
---|
| 939 | case SO_RCVLOWAT: |
---|
| 940 | so->so_rcv.sb_lowat = |
---|
| 941 | (optval > so->so_rcv.sb_hiwat) ? |
---|
| 942 | so->so_rcv.sb_hiwat : optval; |
---|
| 943 | break; |
---|
| 944 | } |
---|
| 945 | break; |
---|
| 946 | } |
---|
| 947 | |
---|
| 948 | case SO_SNDTIMEO: |
---|
| 949 | case SO_RCVTIMEO: |
---|
| 950 | { |
---|
| 951 | struct timeval *tv; |
---|
[847375f] | 952 | unsigned long val; |
---|
[39e6e65a] | 953 | |
---|
| 954 | if (m == NULL || m->m_len < sizeof (*tv)) { |
---|
| 955 | error = EINVAL; |
---|
| 956 | goto bad; |
---|
| 957 | } |
---|
| 958 | tv = mtod(m, struct timeval *); |
---|
[847375f] | 959 | if (tv->tv_sec >= (ULONG_MAX - hz) / hz) { |
---|
[39e6e65a] | 960 | error = EDOM; |
---|
| 961 | goto bad; |
---|
| 962 | } |
---|
| 963 | val = tv->tv_sec * hz + tv->tv_usec / tick; |
---|
| 964 | |
---|
| 965 | switch (optname) { |
---|
| 966 | |
---|
| 967 | case SO_SNDTIMEO: |
---|
| 968 | so->so_snd.sb_timeo = val; |
---|
| 969 | break; |
---|
| 970 | case SO_RCVTIMEO: |
---|
| 971 | so->so_rcv.sb_timeo = val; |
---|
| 972 | break; |
---|
| 973 | } |
---|
| 974 | break; |
---|
| 975 | } |
---|
| 976 | |
---|
| 977 | case SO_PRIVSTATE: |
---|
| 978 | /* we don't care what the parameter is... */ |
---|
| 979 | so->so_state &= ~SS_PRIV; |
---|
| 980 | break; |
---|
| 981 | |
---|
[a6f3cff] | 982 | case SO_SNDWAKEUP: |
---|
| 983 | case SO_RCVWAKEUP: |
---|
| 984 | { |
---|
| 985 | /* RTEMS addition. */ |
---|
| 986 | struct sockwakeup *sw; |
---|
| 987 | struct sockbuf *sb; |
---|
| 988 | |
---|
| 989 | if (m == NULL |
---|
| 990 | || m->m_len != sizeof (struct sockwakeup)) { |
---|
| 991 | error = EINVAL; |
---|
| 992 | goto bad; |
---|
| 993 | } |
---|
| 994 | sw = mtod(m, struct sockwakeup *); |
---|
| 995 | sb = (optname == SO_SNDWAKEUP |
---|
| 996 | ? &so->so_snd |
---|
| 997 | : &so->so_rcv); |
---|
| 998 | sb->sb_wakeup = sw->sw_pfn; |
---|
| 999 | sb->sb_wakeuparg = sw->sw_arg; |
---|
| 1000 | if (sw->sw_pfn) |
---|
| 1001 | sb->sb_flags |= SB_ASYNC; |
---|
| 1002 | else |
---|
| 1003 | sb->sb_flags &=~ SB_ASYNC; |
---|
| 1004 | break; |
---|
| 1005 | } |
---|
| 1006 | |
---|
[39e6e65a] | 1007 | default: |
---|
| 1008 | error = ENOPROTOOPT; |
---|
| 1009 | break; |
---|
| 1010 | } |
---|
| 1011 | if (error == 0 && so->so_proto && so->so_proto->pr_ctloutput) { |
---|
| 1012 | (void) ((*so->so_proto->pr_ctloutput) |
---|
| 1013 | (PRCO_SETOPT, so, level, optname, &m0)); |
---|
| 1014 | m = NULL; /* freed by protocol */ |
---|
| 1015 | } |
---|
| 1016 | } |
---|
| 1017 | bad: |
---|
| 1018 | if (m) |
---|
| 1019 | (void) m_free(m); |
---|
| 1020 | return (error); |
---|
| 1021 | } |
---|
| 1022 | |
---|
| 1023 | int |
---|
| 1024 | sogetopt(so, level, optname, mp) |
---|
| 1025 | register struct socket *so; |
---|
| 1026 | int level, optname; |
---|
| 1027 | struct mbuf **mp; |
---|
| 1028 | { |
---|
| 1029 | register struct mbuf *m; |
---|
| 1030 | |
---|
| 1031 | if (level != SOL_SOCKET) { |
---|
| 1032 | if (so->so_proto && so->so_proto->pr_ctloutput) { |
---|
| 1033 | return ((*so->so_proto->pr_ctloutput) |
---|
| 1034 | (PRCO_GETOPT, so, level, optname, mp)); |
---|
| 1035 | } else |
---|
| 1036 | return (ENOPROTOOPT); |
---|
| 1037 | } else { |
---|
| 1038 | m = m_get(M_WAIT, MT_SOOPTS); |
---|
| 1039 | m->m_len = sizeof (int); |
---|
| 1040 | |
---|
| 1041 | switch (optname) { |
---|
| 1042 | |
---|
| 1043 | case SO_LINGER: |
---|
| 1044 | m->m_len = sizeof (struct linger); |
---|
| 1045 | mtod(m, struct linger *)->l_onoff = |
---|
| 1046 | so->so_options & SO_LINGER; |
---|
| 1047 | mtod(m, struct linger *)->l_linger = so->so_linger; |
---|
| 1048 | break; |
---|
| 1049 | |
---|
| 1050 | case SO_USELOOPBACK: |
---|
| 1051 | case SO_DONTROUTE: |
---|
| 1052 | case SO_DEBUG: |
---|
| 1053 | case SO_KEEPALIVE: |
---|
| 1054 | case SO_REUSEADDR: |
---|
| 1055 | case SO_REUSEPORT: |
---|
| 1056 | case SO_BROADCAST: |
---|
| 1057 | case SO_OOBINLINE: |
---|
| 1058 | case SO_TIMESTAMP: |
---|
| 1059 | *mtod(m, int *) = so->so_options & optname; |
---|
| 1060 | break; |
---|
| 1061 | |
---|
| 1062 | case SO_PRIVSTATE: |
---|
| 1063 | *mtod(m, int *) = so->so_state & SS_PRIV; |
---|
| 1064 | break; |
---|
| 1065 | |
---|
| 1066 | case SO_TYPE: |
---|
| 1067 | *mtod(m, int *) = so->so_type; |
---|
| 1068 | break; |
---|
| 1069 | |
---|
| 1070 | case SO_ERROR: |
---|
| 1071 | *mtod(m, int *) = so->so_error; |
---|
| 1072 | so->so_error = 0; |
---|
| 1073 | break; |
---|
| 1074 | |
---|
| 1075 | case SO_SNDBUF: |
---|
| 1076 | *mtod(m, int *) = so->so_snd.sb_hiwat; |
---|
| 1077 | break; |
---|
| 1078 | |
---|
| 1079 | case SO_RCVBUF: |
---|
| 1080 | *mtod(m, int *) = so->so_rcv.sb_hiwat; |
---|
| 1081 | break; |
---|
| 1082 | |
---|
| 1083 | case SO_SNDLOWAT: |
---|
| 1084 | *mtod(m, int *) = so->so_snd.sb_lowat; |
---|
| 1085 | break; |
---|
| 1086 | |
---|
| 1087 | case SO_RCVLOWAT: |
---|
| 1088 | *mtod(m, int *) = so->so_rcv.sb_lowat; |
---|
| 1089 | break; |
---|
| 1090 | |
---|
| 1091 | case SO_SNDTIMEO: |
---|
| 1092 | case SO_RCVTIMEO: |
---|
| 1093 | { |
---|
[847375f] | 1094 | unsigned long val = (optname == SO_SNDTIMEO ? |
---|
[39e6e65a] | 1095 | so->so_snd.sb_timeo : so->so_rcv.sb_timeo); |
---|
| 1096 | |
---|
| 1097 | m->m_len = sizeof(struct timeval); |
---|
| 1098 | mtod(m, struct timeval *)->tv_sec = val / hz; |
---|
| 1099 | mtod(m, struct timeval *)->tv_usec = |
---|
| 1100 | (val % hz) * tick; |
---|
| 1101 | break; |
---|
| 1102 | } |
---|
| 1103 | |
---|
[a6f3cff] | 1104 | case SO_SNDWAKEUP: |
---|
| 1105 | case SO_RCVWAKEUP: |
---|
| 1106 | { |
---|
| 1107 | struct sockbuf *sb; |
---|
| 1108 | struct sockwakeup *sw; |
---|
| 1109 | |
---|
| 1110 | /* RTEMS additions. */ |
---|
| 1111 | sb = (optname == SO_SNDWAKEUP |
---|
| 1112 | ? &so->so_snd |
---|
| 1113 | : &so->so_rcv); |
---|
| 1114 | m->m_len = sizeof (struct sockwakeup); |
---|
| 1115 | sw = mtod(m, struct sockwakeup *); |
---|
| 1116 | sw->sw_pfn = sb->sb_wakeup; |
---|
| 1117 | sw->sw_arg = sb->sb_wakeuparg; |
---|
| 1118 | break; |
---|
| 1119 | } |
---|
| 1120 | |
---|
[39e6e65a] | 1121 | default: |
---|
| 1122 | (void)m_free(m); |
---|
| 1123 | return (ENOPROTOOPT); |
---|
| 1124 | } |
---|
| 1125 | *mp = m; |
---|
| 1126 | return (0); |
---|
| 1127 | } |
---|
| 1128 | } |
---|
| 1129 | |
---|
| 1130 | void |
---|
| 1131 | sohasoutofband(so) |
---|
| 1132 | register struct socket *so; |
---|
| 1133 | { |
---|
| 1134 | #if 0 /* FIXME: For now we just ignore out of band data */ |
---|
| 1135 | struct proc *p; |
---|
| 1136 | |
---|
| 1137 | if (so->so_pgid < 0) |
---|
| 1138 | gsignal(-so->so_pgid, SIGURG); |
---|
| 1139 | else if (so->so_pgid > 0 && (p = pfind(so->so_pgid)) != 0) |
---|
| 1140 | psignal(p, SIGURG); |
---|
| 1141 | selwakeup(&so->so_rcv.sb_sel); |
---|
| 1142 | #endif |
---|
| 1143 | } |
---|