c2e3c52e0d
This change allows creating file descriptors with close-on-exec set in some situations. SOCK_CLOEXEC and SOCK_NONBLOCK can be OR'ed in socket() and socketpair()'s type parameter, and MSG_CMSG_CLOEXEC to recvmsg() makes file descriptors (SCM_RIGHTS) atomically close-on-exec. The numerical values for SOCK_CLOEXEC and SOCK_NONBLOCK are as in NetBSD. MSG_CMSG_CLOEXEC is the first free bit for MSG_*. The SOCK_* flags are not passed to MAC because this may cause incorrect failures and can be done later via fcntl() anyway. On the other hand, audit is expected to cope with the new flags. For MSG_CMSG_CLOEXEC, unp_externalize() is extended to take a flags argument. Reviewed by: kib
107 lines
3.9 KiB
C
107 lines
3.9 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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* 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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* @(#)domain.h 8.1 (Berkeley) 6/2/93
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* $FreeBSD$
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*/
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#ifndef _SYS_DOMAIN_H_
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#define _SYS_DOMAIN_H_
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/*
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* Structure per communications domain.
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*/
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/*
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* Forward structure declarations for function prototypes [sic].
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*/
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struct mbuf;
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struct ifnet;
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struct domain {
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int dom_family; /* AF_xxx */
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char *dom_name;
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void (*dom_init) /* initialize domain data structures */
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(void);
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void (*dom_destroy) /* cleanup structures / state */
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(void);
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int (*dom_externalize) /* externalize access rights */
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(struct mbuf *, struct mbuf **, int);
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void (*dom_dispose) /* dispose of internalized rights */
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(struct mbuf *);
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struct protosw *dom_protosw, *dom_protoswNPROTOSW;
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struct domain *dom_next;
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int (*dom_rtattach) /* initialize routing table */
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(void **, int);
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int (*dom_rtdetach) /* clean up routing table */
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(void **, int);
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int dom_rtoffset; /* an arg to rtattach, in bits */
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/* XXX MRT.
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* rtoffset May be 0 if the domain supplies its own rtattach(),
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* in which case, a 0 indicates it's being called from
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* vfs_export.c (HACK) Only for AF_INET{,6} at this time.
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* Temporary ABI compat hack.. fix post RELENG_7
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*/
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int dom_maxrtkey; /* for routing layer */
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void *(*dom_ifattach)(struct ifnet *);
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void (*dom_ifdetach)(struct ifnet *, void *);
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/* af-dependent data on ifnet */
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};
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#ifdef _KERNEL
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extern int domain_init_status;
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extern struct domain *domains;
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void domain_add(void *);
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void domain_init(void *);
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#ifdef VIMAGE
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void vnet_domain_init(void *);
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void vnet_domain_uninit(void *);
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#endif
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#define DOMAIN_SET(name) \
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SYSINIT(domain_add_ ## name, SI_SUB_PROTO_DOMAIN, \
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SI_ORDER_FIRST, domain_add, & name ## domain); \
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SYSINIT(domain_init_ ## name, SI_SUB_PROTO_DOMAIN, \
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SI_ORDER_SECOND, domain_init, & name ## domain);
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#ifdef VIMAGE
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#define VNET_DOMAIN_SET(name) \
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SYSINIT(domain_add_ ## name, SI_SUB_PROTO_DOMAIN, \
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SI_ORDER_FIRST, domain_add, & name ## domain); \
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VNET_SYSINIT(vnet_domain_init_ ## name, SI_SUB_PROTO_DOMAIN, \
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SI_ORDER_SECOND, vnet_domain_init, & name ## domain); \
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VNET_SYSUNINIT(vnet_domain_uninit_ ## name, \
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SI_SUB_PROTO_DOMAIN, SI_ORDER_SECOND, vnet_domain_uninit, \
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& name ## domain)
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#else /* !VIMAGE */
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#define VNET_DOMAIN_SET(name) DOMAIN_SET(name)
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#endif /* VIMAGE */
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#endif /* _KERNEL */
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#endif /* !_SYS_DOMAIN_H_ */
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