6afbf203bd
This commit includes the following changes: 1) Old-style (pr_usrreq()) protocols are no longer supported, the compatibility glue for them is deleted, and the kernel will panic on boot if any are compiled in. 2) Certain protocol entry points are modified to take a process structure, so they they can easily tell whether or not it is possible to sleep, and also to access credentials. 3) SS_PRIV is no more, and with it goes the SO_PRIVSTATE setsockopt() call. Protocols should use the process pointer they are now passed. 4) The PF_LOCAL and PF_ROUTE families have been updated to use the new style, as has the `raw' skeleton family. 5) PF_LOCAL sockets now obey the process's umask when creating a socket in the filesystem. As a result, LINT is now broken. I'm hoping that some enterprising hacker with a bit more time will either make the broken bits work (should be easy for netipx) or dike them out.
242 lines
6.6 KiB
C
242 lines
6.6 KiB
C
/*
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* Copyright (c) 1982, 1986, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)uipc_domain.c 8.2 (Berkeley) 10/18/93
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* $Id: uipc_domain.c,v 1.16 1997/02/22 09:39:27 peter Exp $
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*/
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#include <sys/param.h>
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#include <sys/socket.h>
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#include <sys/protosw.h>
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#include <sys/domain.h>
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#include <sys/mbuf.h>
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#include <sys/kernel.h>
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#include <sys/systm.h>
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/*
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* System initialization
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*
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* Note: domain initialization wants to take place on a per domain basis
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* as a result of traversing a linker set. Most likely, each domain
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* want to call a registration function rather than being handled here
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* in domaininit(). Probably this will look like:
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*
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* SYSINIT(unique, SI_SUB_PROTO_DOMAI, SI_ORDER_ANY, domain_add, xxx)
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*
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* Where 'xxx' is replaced by the address of a parameter struct to be
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* passed to the doamin_add() function.
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*/
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static int x_save_spl; /* used by kludge*/
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static void kludge_splimp __P((void *));
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static void kludge_splx __P((void *));
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static void domaininit __P((void *));
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SYSINIT(splimp, SI_SUB_PROTO_BEGIN, SI_ORDER_FIRST, kludge_splimp, &x_save_spl)
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SYSINIT(domain, SI_SUB_PROTO_DOMAIN, SI_ORDER_FIRST, domaininit, NULL)
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SYSINIT(splx, SI_SUB_PROTO_END, SI_ORDER_FIRST, kludge_splx, &x_save_spl)
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static void pffasttimo __P((void *));
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static void pfslowtimo __P((void *));
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struct domain *domains;
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#define ADDDOMAIN(x) { \
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__CONCAT(x,domain.dom_next) = domains; \
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domains = &__CONCAT(x,domain); \
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}
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extern struct linker_set domain_set;
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/* ARGSUSED*/
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static void
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domaininit(dummy)
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void *dummy;
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{
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register struct domain *dp, **dpp;
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register struct protosw *pr;
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/*
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* NB - local domain is always present.
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*/
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ADDDOMAIN(local);
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for (dpp = (struct domain **)domain_set.ls_items; *dpp; dpp++) {
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(**dpp).dom_next = domains;
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domains = *dpp;
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}
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/* - not in our sources
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#ifdef ISDN
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ADDDOMAIN(isdn);
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#endif
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*/
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for (dp = domains; dp; dp = dp->dom_next) {
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if (dp->dom_init)
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(*dp->dom_init)();
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for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++){
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#ifdef PRU_OLDSTYLE
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/* See comments in uipc_socket2.c. */
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if (pr->pr_usrreqs == 0 && pr->pr_ousrreq)
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pr->pr_usrreqs = &pru_oldstyle;
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#else
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if (pr->pr_usrreqs == 0)
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panic("domaininit: %ssw[%d] has no usrreqs!",
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dp->dom_name,
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(int)(pr - dp->dom_protosw));
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#endif
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if (pr->pr_init)
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(*pr->pr_init)();
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}
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}
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if (max_linkhdr < 16) /* XXX */
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max_linkhdr = 16;
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max_hdr = max_linkhdr + max_protohdr;
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max_datalen = MHLEN - max_hdr;
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timeout(pffasttimo, (void *)0, 1);
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timeout(pfslowtimo, (void *)0, 1);
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}
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/*
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* The following two operations are kludge code. Most likely, they should
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* be done as a "domainpreinit()" for the first function and then rolled
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* in as the last act of "domaininit()" for the second.
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*
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* In point of fact, it is questionable why other initialization prior
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* to this does not also take place at splimp by default.
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*/
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static void
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kludge_splimp(udata)
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void *udata;
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{
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int *savesplp = udata;
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*savesplp = splimp();
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}
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static void
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kludge_splx(udata)
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void *udata;
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{
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int *savesplp = udata;
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splx( *savesplp);
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}
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struct protosw *
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pffindtype(int family, int type)
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{
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register struct domain *dp;
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register struct protosw *pr;
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for (dp = domains; dp; dp = dp->dom_next)
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if (dp->dom_family == family)
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goto found;
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return (0);
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found:
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for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
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if (pr->pr_type && pr->pr_type == type)
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return (pr);
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return (0);
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}
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struct protosw *
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pffindproto(int family, int protocol, int type)
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{
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register struct domain *dp;
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register struct protosw *pr;
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struct protosw *maybe = 0;
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if (family == 0)
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return (0);
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for (dp = domains; dp; dp = dp->dom_next)
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if (dp->dom_family == family)
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goto found;
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return (0);
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found:
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for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++) {
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if ((pr->pr_protocol == protocol) && (pr->pr_type == type))
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return (pr);
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if (type == SOCK_RAW && pr->pr_type == SOCK_RAW &&
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pr->pr_protocol == 0 && maybe == (struct protosw *)0)
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maybe = pr;
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}
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return (maybe);
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}
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void
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pfctlinput(cmd, sa)
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int cmd;
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struct sockaddr *sa;
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{
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register struct domain *dp;
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register struct protosw *pr;
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for (dp = domains; dp; dp = dp->dom_next)
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for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
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if (pr->pr_ctlinput)
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(*pr->pr_ctlinput)(cmd, sa, (void *)0);
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}
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static void
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pfslowtimo(arg)
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void *arg;
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{
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register struct domain *dp;
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register struct protosw *pr;
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for (dp = domains; dp; dp = dp->dom_next)
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for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
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if (pr->pr_slowtimo)
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(*pr->pr_slowtimo)();
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timeout(pfslowtimo, (void *)0, hz/2);
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}
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static void
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pffasttimo(arg)
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void *arg;
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{
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register struct domain *dp;
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register struct protosw *pr;
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for (dp = domains; dp; dp = dp->dom_next)
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for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
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if (pr->pr_fasttimo)
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(*pr->pr_fasttimo)();
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timeout(pffasttimo, (void *)0, hz/5);
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}
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