8a031a1d1e
module hook, we can share a common set of synchronization structures. This cuts the amount of cacheline_aligned data for these structures by 50%. Note that we still have a per-hook localcount, since we need to count individual references. As discussed with riastradh@ Welcome to 9.99.22 !
89 lines
2.7 KiB
C
89 lines
2.7 KiB
C
/* $NetBSD: uipc_usrreq_70.c,v 1.5 2019/12/12 02:15:42 pgoyette Exp $ */
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/*-
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* Copyright (c) 2016 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Roy Marples.
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: uipc_usrreq_70.c,v 1.5 2019/12/12 02:15:42 pgoyette Exp $");
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#if defined(_KERNEL_OPT)
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#include "opt_compat_netbsd.h"
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#endif
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#include <sys/param.h>
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#include <sys/lwp.h>
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#include <sys/socket.h>
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#include <sys/socketvar.h>
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#include <sys/unpcb.h>
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#include <sys/mbuf.h>
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#include <sys/kauth.h>
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#include <sys/compat_stub.h>
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#include <compat/sys/socket.h>
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struct mbuf *
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compat_70_unp_addsockcred(struct lwp *l, struct mbuf *control)
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{
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struct sockcred70 *sc;
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struct mbuf *m;
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void *p;
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m = sbcreatecontrol1(&p, SOCKCRED70SIZE(kauth_cred_ngroups(l->l_cred)),
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SCM_OCREDS, SOL_SOCKET, M_WAITOK);
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if (m == NULL) {
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return control;
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}
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sc = p;
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sc->sc_uid = kauth_cred_getuid(l->l_cred);
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sc->sc_euid = kauth_cred_geteuid(l->l_cred);
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sc->sc_gid = kauth_cred_getgid(l->l_cred);
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sc->sc_egid = kauth_cred_getegid(l->l_cred);
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sc->sc_ngroups = kauth_cred_ngroups(l->l_cred);
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for (int i = 0; i < sc->sc_ngroups; i++)
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sc->sc_groups[i] = kauth_cred_group(l->l_cred, i);
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return m_add(control, m);
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}
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void
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uipc_usrreq_70_init(void)
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{
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MODULE_HOOK_SET(uipc_unp_70_hook, compat_70_unp_addsockcred);
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}
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void
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uipc_usrreq_70_fini(void)
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{
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MODULE_HOOK_UNSET(uipc_unp_70_hook);
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}
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