xref: /freebsd/sys/sys/filio.h (revision 29363fb4)
1 /*-
2  * SPDX-License-Identifier: BSD-3-Clause
3  *
4  * Copyright (c) 1982, 1986, 1990, 1993, 1994
5  *	The Regents of the University of California.  All rights reserved.
6  * (c) UNIX System Laboratories, Inc.
7  * All or some portions of this file are derived from material licensed
8  * to the University of California by American Telephone and Telegraph
9  * Co. or Unix System Laboratories, Inc. and are reproduced herein with
10  * the permission of UNIX System Laboratories, Inc.
11  *
12  * Redistribution and use in source and binary forms, with or without
13  * modification, are permitted provided that the following conditions
14  * are met:
15  * 1. Redistributions of source code must retain the above copyright
16  *    notice, this list of conditions and the following disclaimer.
17  * 2. Redistributions in binary form must reproduce the above copyright
18  *    notice, this list of conditions and the following disclaimer in the
19  *    documentation and/or other materials provided with the distribution.
20  * 3. Neither the name of the University nor the names of its contributors
21  *    may be used to endorse or promote products derived from this software
22  *    without specific prior written permission.
23  *
24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34  * SUCH DAMAGE.
35  */
36 
37 #ifndef	_SYS_FILIO_H_
38 #define	_SYS_FILIO_H_
39 
40 #include <sys/_types.h>
41 #include <sys/ioccom.h>
42 
43 /* Generic file-descriptor ioctl's. */
44 #define	FIOCLEX		 _IO('f', 1)		/* set close on exec on fd */
45 #define	FIONCLEX	 _IO('f', 2)		/* remove close on exec */
46 #define	FIONREAD	_IOR('f', 127, int)	/* get # bytes to read */
47 #define	FIONBIO		_IOW('f', 126, int)	/* set/clear non-blocking i/o */
48 #define	FIOASYNC	_IOW('f', 125, int)	/* set/clear async i/o */
49 #define	FIOSETOWN	_IOW('f', 124, int)	/* set owner */
50 #define	FIOGETOWN	_IOR('f', 123, int)	/* get owner */
51 #define	FIODTYPE	_IOR('f', 122, int)	/* get d_flags type part */
52 #define	FIOGETLBA	_IOR('f', 121, int)	/* get start blk # */
53 struct fiodgname_arg {
54 	int	len;
55 	void	*buf;
56 };
57 #define	FIODGNAME	_IOW('f', 120, struct fiodgname_arg) /* get dev. name */
58 #define	FIONWRITE	_IOR('f', 119, int)	/* get # bytes (yet) to write */
59 #define	FIONSPACE	_IOR('f', 118, int)	/* get space in send queue */
60 /* Handle lseek SEEK_DATA and SEEK_HOLE for holey file knowledge. */
61 #define	FIOSEEKDATA	_IOWR('f', 97, off_t)	/* SEEK_DATA */
62 #define	FIOSEEKHOLE	_IOWR('f', 98, off_t)	/* SEEK_HOLE */
63 struct fiobmap2_arg {
64 	__daddr_t	bn;
65 	int		runp;
66 	int		runb;
67 };
68 /* Get the file's bmap info for the logical block bn. */
69 #define	FIOBMAP2	_IOWR('f', 99, struct fiobmap2_arg)
70 /* POSIX shm largepage set/get config */
71 #define	FIOSSHMLPGCNF	_IOW('f', 100, struct shm_largepage_conf)
72 #define	FIOGSHMLPGCNF	_IOR('f', 101, struct shm_largepage_conf)
73 
74 #ifdef _KERNEL
75 #ifdef COMPAT_FREEBSD32
76 struct fiodgname_arg32 {
77 	int		len;
78 	uint32_t	buf;	/* (void *) */
79 };
80 #define	FIODGNAME_32	_IOC_NEWTYPE(FIODGNAME, struct fiodgname_arg32)
81 #endif
82 
83 void	*fiodgname_buf_get_ptr(void *fgnp, u_long com);
84 #endif
85 
86 #endif /* !_SYS_FILIO_H_ */
87