freebsd-skq/sys/compat/svr4/svr4_socket.h

59 lines
2.3 KiB
C
Raw Normal View History

/*-
* Copyright (c) 1998 Mark Newton
* Copyright (c) 1996 Christos Zoulas.
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Christos Zoulas.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
1999-07-30 12:45:21 +00:00
*
1999-08-28 01:08:13 +00:00
* $FreeBSD$
*/
#ifndef _SVR4_SOCKET_H_
#define _SVR4_SOCKET_H_
#include <netinet/in.h>
struct sockaddr_un;
struct proc;
struct thread;
struct file;
struct svr4_sockaddr_in {
u_char sin_family;
u_short sin_port;
struct in_addr sin_addr;
u_char sin_zero[8];
};
Clean up the svr4 socket cache and streams code some to make it more easily locked. - Move all the svr4 socket cache code into svr4_socket.c, specifically move svr4_delete_socket() over from streams.c. Make the socket cache entry structure and svr4_head private to svr4_socket.c as a result. - Add a mutex to protect the svr4 socket cache. - Change svr4_find_socket() to copy the sockaddr_un struct into a caller-supplied sockaddr_un rather than giving the caller a pointer to our internal one. This removes the one case where code outside of svr4_socket.c could access data in the cache. - Add an eventhandler for process_exit and process_exec to purge the cache of any entries for the exiting or execing process. - Add methods to init and destroy the socket cache and call them from the svr4 ABI module's event handler. - Conditionally grab Giant around socreate() in streamsopen(). - Use fdclose() instead of inlining it in streamsopen() when handling socreate() failure. - Only allocate a stream structure and attach it to a socket in streamsopen(). Previously, if a svr4 program performed a stream operation on an arbitrary socket not opened via the streams device, we would attach streams state data to it and change f_ops of the associated struct file while it was in use. The latter was especially not safe, and if a program wants a stream object it should open it via the streams device anyway. - Don't bother locking so_emuldata in the streams code now that we only touch it right after creating a socket (in streamsopen()) or when tearing it down when the file is closed. - Remove D_NEEDGIANT from the streams device as it is no longer needed.
2006-07-21 20:40:13 +00:00
int svr4_add_socket(struct thread *, const char *, struct stat *);
void svr4_delete_socket(struct proc *, struct file *);
int svr4_find_socket(struct thread *, struct file *, dev_t, ino_t,
struct sockaddr_un *);
void svr4_sockcache_init(void);
void svr4_sockcache_destroy(void);
#endif /* _SVR4_SOCKET_H_ */