Yaya48
cf256aa081
Upstream: https://gitlab.com/qemu-project/qemu.git Upstream-Commit: d2e570cc0f97b936902a5b1b86b73c0f5998b475
44 lines
1.8 KiB
C
44 lines
1.8 KiB
C
/*
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* FreeBSD ioccom definitions for ioctl(2) emulation
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*
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* Copyright (c) 2013 Stacey D. Son
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#ifndef BSD_USER_FREEBSD_OS_IOCTL_IOCCOM_H
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#define BSD_USER_FREEBSD_OS_IOCTL_IOCCOM_H
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/*
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* Ioctl's have the command encoded in the lower word, and the size of
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* any in or out parameters in the upper word. The high 3 bits of the
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* upper word are used to encode the in/out status of the parameter.
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*/
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/* number of bits for ioctl size */
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#define TARGET_IOCPARM_SHIFT 13
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/* parameter length mask */
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#define TARGET_IOCPARM_MASK ((1 << TARGET_IOCPARM_SHIFT) - 1)
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#define TARGET_IOCPARM_LEN(x) (((x) >> 16) & TARGET_IOCPARM_MASK)
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#define TARGET_IOCBASECMD(x) ((x) & ~(TARGET_IOCPARM_MASK << 16))
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#define TARGET_IOCGROUP(x) (((x) >> 8) & 0xff)
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#define TARGET_IOCPARM_MAX (1 << TARGET_IOCPARM_SHIFT) /* max size of ioctl */
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#define TARGET_IOC_VOID 0x20000000 /* no parameters */
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#define TARGET_IOC_OUT 0x40000000 /* copy out parameters */
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#define TARGET_IOC_IN 0x80000000 /* copy in parameters */
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#define TARGET_IOC_INOUT (TARGET_IOC_IN | TARGET_IOC_OUT)
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#define TARGET_IOC_DIRMASK (TARGET_IOC_VOID | TARGET_IOC_OUT | TARGET_IOC_IN)
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#define TARGET_IOC(inout, group, num, len) ((abi_ulong) \
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((inout) | (((len) & TARGET_IOCPARM_MASK) << 16) | ((group) << 8) \
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| (num)))
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#define TARGET_IO(g, n) TARGET_IOC(TARGET_IOC_VOID, (g), (n), 0)
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#define TARGET_IOWINT(g, n) TARGET_IOC(TARGET_IOC_VOID, (g), (n), sizeof(int))
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#define TARGET_IOR(g, n, t) TARGET_IOC(TARGET_IOC_OUT, (g), (n), sizeof(t))
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#define TARGET_IOW(g, n, t) TARGET_IOC(TARGET_IOC_IN, (g), (n), sizeof(t))
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/* this should be _IORW, but stdio got there first */
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#define TARGET_IOWR(g, n, t) TARGET_IOC(TARGET_IOC_INOUT, (g), (n), sizeof(t))
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#endif /* BSD_USER_FREEBSD_OS_IOCTL_IOCCOM_H */
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