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/* ==== fd.h ============================================================
* Copyright (c) 1993, 1994 by Chris Provenzano, proven@mit.edu
* 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 Chris Provenzano.
* 4. The name of Chris Provenzano may not be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY CHRIS PROVENZANO ``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 CHRIS PROVENZANO 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.
*
* $Id$
*
* Description : Basic fd header.
*
* 1.00 93/08/14 proven
* -Started coding this file.
*
* 1.01 93/11/13 proven
* -The functions readv() and writev() added
*/
/*
* New pthread types.
*/
enum fd_type {
FD_NT, /* Not tested */
FD_NIU, /* Known to be not in use */
FD_HALF_DUPLEX, /* Files, and seeking devices */
FD_FULL_DUPLEX, /* pipes, sockets, drivers, ... */
FD_TEST_HALF_DUPLEX, /* Redo machdep_sys_fcntl */
FD_TEST_FULL_DUPLEX /* Redo machdep_sys_fcntl */
};
#define FD_READ 0x1
#define FD_WRITE 0x2
#define FD_RDWR (FD_READ | FD_WRITE)
union fd_data {
void *ptr;
int i;
};
struct timespec;
struct iovec;
struct fd_ops {
pthread_ssize_t (*write) __P_((union fd_data, int, const void *,
size_t, struct timespec *));
pthread_ssize_t (*read) __P_((union fd_data, int, void *, size_t,
struct timespec *));
int (*close)();
int (*fcntl)();
int (*writev) __P_((union fd_data, int,
const struct iovec *,
int, struct timespec *));
int (*readv) __P_((union fd_data, int,
const struct iovec *,
int, struct timespec *));
off_t (*seek)();
int use_kfds;
};
struct fd_table_entry {
struct pthread_queue r_queue;
struct pthread_queue w_queue;
struct pthread *r_owner;
struct pthread *w_owner;
pthread_mutex_t mutex;
struct fd_table_entry *next;
struct fd_ops *ops;
enum fd_type type;
int r_lockcount; /* Count for FILE read locks */
int w_lockcount; /* Count for FILE write locks */
int count;
/* data that needs to be passed to the type dependent fd */
int flags;
union fd_data fd;
};
/*
* Globals
*/
#if defined(PTHREAD_KERNEL)
extern struct fd_table_entry **fd_table;
extern int dtablesize;
#endif
/*
* New functions
*/
__BEGIN_DECLS
#if defined(PTHREAD_KERNEL)
#endif
__END_DECLS
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