[444] | 1 | /*- |
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| 2 | * Copyright (c) 1982, 1986, 1990, 1993, 1994 |
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| 3 | * The Regents of the University of California. All rights reserved. |
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| 4 | * |
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| 5 | * Redistribution and use in source and binary forms, with or without |
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| 6 | * modification, are permitted provided that the following conditions |
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| 7 | * are met: |
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| 8 | * 1. Redistributions of source code must retain the above copyright |
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| 9 | * notice, this list of conditions and the following disclaimer. |
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| 10 | * 2. Redistributions in binary form must reproduce the above copyright |
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| 11 | * notice, this list of conditions and the following disclaimer in the |
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| 12 | * documentation and/or other materials provided with the distribution. |
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| 13 | * 3. Neither the name of the University nor the names of its contributors |
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| 14 | * may be used to endorse or promote products derived from this software |
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| 15 | * without specific prior written permission. |
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| 16 | * |
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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| 18 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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| 19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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| 20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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| 21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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| 22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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| 23 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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| 24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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| 25 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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| 26 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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| 27 | * SUCH DAMAGE. |
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| 28 | * |
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| 29 | * @(#)ioccom.h 8.2 (Berkeley) 3/28/94 |
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| 30 | * $FreeBSD: head/sys/sys/ioccom.h 314436 2017-02-28 23:42:47Z imp $ |
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| 31 | */ |
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| 32 | |
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| 33 | #ifndef _SYS_IOCCOM_H_ |
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| 34 | #define _SYS_IOCCOM_H_ |
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| 35 | |
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| 36 | #include <sys/types.h> |
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| 37 | #include <stdint.h> |
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| 38 | |
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| 39 | typedef unsigned long ioctl_command_t; |
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| 40 | |
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| 41 | /* |
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| 42 | * Ioctl's have the command encoded in the lower word, and the size of |
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| 43 | * any in or out parameters in the upper word. The high 3 bits of the |
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| 44 | * upper word are used to encode the in/out status of the parameter. |
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| 45 | */ |
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| 46 | #define IOCPARM_SHIFT 13 /* number of bits for ioctl size */ |
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| 47 | #define IOCPARM_MASK ((1 << IOCPARM_SHIFT) - 1) /* parameter length mask */ |
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| 48 | #define IOCPARM_LEN(x) (((x) >> 16) & IOCPARM_MASK) |
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| 49 | #define IOCBASECMD(x) ((x) & ~(IOCPARM_MASK << 16)) |
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| 50 | #define IOCGROUP(x) (((x) >> 8) & 0xff) |
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| 51 | |
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| 52 | #define IOCPARM_MAX (1 << IOCPARM_SHIFT) /* max size of ioctl */ |
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| 53 | #define IOC_VOID 0x20000000 /* no parameters */ |
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| 54 | #define IOC_OUT 0x40000000 /* copy out parameters */ |
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| 55 | #define IOC_IN 0x80000000 /* copy in parameters */ |
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| 56 | #define IOC_INOUT (IOC_IN|IOC_OUT) |
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| 57 | #define IOC_DIRMASK (IOC_VOID|IOC_OUT|IOC_IN) |
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| 58 | |
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| 59 | #define _IOC(inout,group,num,len) \ |
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| 60 | ((ioctl_command_t)((ioctl_command_t)(inout) | (((ioctl_command_t)(len) & \ |
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| 61 | IOCPARM_MASK) << 16) | ((ioctl_command_t)(group) << 8) | \ |
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| 62 | (ioctl_command_t)(num))) |
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| 63 | #define _IO(g,n) _IOC(IOC_VOID, (g), (n), 0) |
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| 64 | #define _IOWINT(g,n) _IOC(IOC_VOID, (g), (n), sizeof(int)) |
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| 65 | #define _IOR(g,n,t) _IOC(IOC_OUT, (g), (n), sizeof(t)) |
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| 66 | #define _IOW(g,n,t) _IOC(IOC_IN, (g), (n), sizeof(t)) |
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| 67 | /* this should be _IORW, but stdio got there first */ |
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| 68 | #define _IOWR(g,n,t) _IOC(IOC_INOUT, (g), (n), sizeof(t)) |
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| 69 | |
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| 70 | #ifdef _KERNEL |
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| 71 | |
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| 72 | #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \ |
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| 73 | defined(COMPAT_FREEBSD4) || defined(COMPAT_43) |
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| 74 | #define IOCPARM_IVAL(x) ((int)(intptr_t)(void *)*(caddr_t *)(void *)(x)) |
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| 75 | #endif |
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| 76 | |
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| 77 | #else |
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| 78 | |
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| 79 | #include <sys/cdefs.h> |
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| 80 | |
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| 81 | __BEGIN_DECLS |
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| 82 | int ioctl(int, ioctl_command_t, ...); |
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| 83 | __END_DECLS |
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| 84 | |
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| 85 | #endif |
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| 86 | |
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| 87 | #endif /* !_SYS_IOCCOM_H_ */ |
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