6c8f7fc3ba
. add all sys/sys headers not already present to help compiling . take netbsd dirent.h and struct dirent; main result is introducing d_type and d_namlen that have to be set by getdents() in all FS code implementing it . d_off is gone . alignment of the struct has become 8 bytes instead of 4 . remove _MAX_BLOCK_SIZE, _MIN_BLOCK_SIZE, _STATIC_BLOCK_SIZE . libminlib: cleanup unused yet duplicate code . mfs: throw out the long-broken v1, v2 support . new test for dirent contents filled by getdents() Change-Id: I1459755c7ba5e5d1c9396d3a587ce6e63ddc283e
109 lines
4.8 KiB
C
109 lines
4.8 KiB
C
/* $NetBSD: unpcb.h,v 1.17 2008/04/24 11:38:39 ad Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1982, 1986, 1989, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* @(#)unpcb.h 8.1 (Berkeley) 6/2/93
|
|
*/
|
|
|
|
#ifndef _SYS_UNPCB_H_
|
|
#define _SYS_UNPCB_H_
|
|
|
|
#include <sys/un.h>
|
|
#include <sys/mutex.h>
|
|
|
|
/*
|
|
* Protocol control block for an active
|
|
* instance of a UNIX internal protocol.
|
|
*
|
|
* A socket may be associated with an vnode in the
|
|
* file system. If so, the unp_vnode pointer holds
|
|
* a reference count to this vnode, which should be irele'd
|
|
* when the socket goes away.
|
|
*
|
|
* A socket may be connected to another socket, in which
|
|
* case the control block of the socket to which it is connected
|
|
* is given by unp_conn.
|
|
*
|
|
* A socket may be referenced by a number of sockets (e.g. several
|
|
* sockets may be connected to a datagram socket.) These sockets
|
|
* are in a linked list starting with unp_refs, linked through
|
|
* unp_nextref and null-terminated. Note that a socket may be referenced
|
|
* by a number of other sockets and may also reference a socket (not
|
|
* necessarily one which is referencing it). This generates
|
|
* the need for unp_refs and unp_nextref to be separate fields.
|
|
*
|
|
* Stream sockets keep copies of receive sockbuf sb_cc and sb_mbcnt
|
|
* so that changes in the sockbuf may be computed to modify
|
|
* back pressure on the sender accordingly.
|
|
*
|
|
* The unp_ctime holds the creation time of the socket: it might be part of
|
|
* a socketpair created by pipe(2), and POSIX requires pipe(2) to initialize
|
|
* a stat structure's st_[acm]time members with the pipe's creation time.
|
|
* N.B.: updating st_[am]time when reading/writing the pipe is not required,
|
|
* so we just use a single timespec and do not implement that.
|
|
*/
|
|
struct unpcb {
|
|
struct socket *unp_socket; /* pointer back to socket */
|
|
struct vnode *unp_vnode; /* if associated with file */
|
|
ino_t unp_ino; /* fake inode number */
|
|
struct unpcb *unp_conn; /* control block of connected socket */
|
|
struct unpcb *unp_refs; /* referencing socket linked list */
|
|
struct unpcb *unp_nextref; /* link in unp_refs list */
|
|
struct sockaddr_un *unp_addr; /* bound address of socket */
|
|
kmutex_t *unp_streamlock; /* lock for est. stream connections */
|
|
size_t unp_addrlen; /* size of socket address */
|
|
int unp_cc; /* copy of rcv.sb_cc */
|
|
int unp_mbcnt; /* copy of rcv.sb_mbcnt */
|
|
struct timespec unp_ctime; /* holds creation time */
|
|
int unp_flags; /* misc flags; see below*/
|
|
struct unpcbid unp_connid; /* pid and eids of peer */
|
|
};
|
|
|
|
/*
|
|
* Flags in unp_flags.
|
|
*
|
|
* UNP_EIDSVALID - indicates that the unp_connid member is filled in
|
|
* and is really the effective ids of the connected peer. This is used
|
|
* to determine whether the contents should be sent to the user or
|
|
* not.
|
|
*
|
|
* UNP_EIDSBIND - indicates that the unp_connid member is filled
|
|
* in with data for the listening process. This is set up in unp_bind() when
|
|
* it fills in unp_connid for later consumption by unp_connect().
|
|
*/
|
|
#define UNP_WANTCRED 0x0001 /* credentials wanted */
|
|
#define UNP_CONNWAIT 0x0002 /* connect blocks until accepted */
|
|
#define UNP_EIDSVALID 0x0004 /* unp_connid contains valid data */
|
|
#define UNP_EIDSBIND 0x0008 /* unp_connid was set by bind() */
|
|
#define UNP_BUSY 0x0010 /* busy connecting or binding */
|
|
|
|
#define sotounpcb(so) ((struct unpcb *)((so)->so_pcb))
|
|
|
|
#endif /* !_SYS_UNPCB_H_ */
|