2fe8fb192f
There is important information about booting non-ack images in docs/UPDATING. ack/aout-format images can't be built any more, and booting clang/ELF-format ones is a little different. Updating to the new boot monitor is recommended. Changes in this commit: . drop boot monitor -> allowing dropping ack support . facility to copy ELF boot files to /boot so that old boot monitor can still boot fairly easily, see UPDATING . no more ack-format libraries -> single-case libraries . some cleanup of OBJECT_FMT, COMPILER_TYPE, etc cases . drop several ack toolchain commands, but not all support commands (e.g. aal is gone but acksize is not yet). . a few libc files moved to netbsd libc dir . new /bin/date as minix date used code in libc/ . test compile fix . harmonize includes . /usr/lib is no longer special: without ack, /usr/lib plays no kind of special bootstrapping role any more and bootstrapping is done exclusively through packages, so releases depend even less on the state of the machine making them now. . rename nbsd_lib* to lib* . reduce mtree
73 lines
2.1 KiB
C
73 lines
2.1 KiB
C
/* minix/ioctl.h - Ioctl helper definitions. Author: Kees J. Bot
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* 23 Nov 2002
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*
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* This file is included by every header file that defines ioctl codes.
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*/
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#ifndef _M_IOCTL_H
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#define _M_IOCTL_H
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#include <sys/cdefs.h>
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#ifndef _TYPES_H
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#include <minix/types.h>
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#endif
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#if _EM_WSIZE >= 4
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/* Ioctls have the command encoded in the low-order word, and the size
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* of the parameter in the high-order word. The 3 high bits of the high-
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* order word are used to encode the in/out/void status of the parameter.
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*/
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#define _IOCPARM_MASK 0x0FFF
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#define _IOCPARM_MASK_BIG 0x0FFFFF
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#define _IOC_VOID 0x20000000
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#define _IOCTYPE_MASK 0xFFFF
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#define _IOC_IN 0x40000000
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#define _IOC_OUT 0x80000000
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#define _IOC_INOUT (_IOC_IN | _IOC_OUT)
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/* Flag indicating ioctl format with only one type field, and more bits
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* for the size field (using mask _IOCPARM_MASK_BIG).
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*/
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#define _IOC_BIG 0x10000000
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#define _IO(x,y) ((x << 8) | y | _IOC_VOID)
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#define _IOR(x,y,t) ((x << 8) | y | ((sizeof(t) & _IOCPARM_MASK) << 16) |\
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_IOC_OUT)
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#define _IOW(x,y,t) ((x << 8) | y | ((sizeof(t) & _IOCPARM_MASK) << 16) |\
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_IOC_IN)
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#define _IORW(x,y,t) ((x << 8) | y | ((sizeof(t) & _IOCPARM_MASK) << 16) |\
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_IOC_INOUT)
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#define _IOW_BIG(y,t) (y | ((sizeof(t) & _IOCPARM_MASK_BIG) << 8) \
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| _IOC_IN | _IOC_BIG)
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#define _IOR_BIG(y,t) (y | ((sizeof(t) & _IOCPARM_MASK_BIG) << 8) \
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| _IOC_OUT | _IOC_BIG)
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#define _IORW_BIG(y,t) (y | ((sizeof(t) & _IOCPARM_MASK_BIG) << 8) \
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| _IOC_INOUT | _IOC_BIG)
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/* Decode an ioctl call. */
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#define _MINIX_IOCTL_SIZE(i) (((i) >> 16) & _IOCPARM_MASK)
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#define _MINIX_IOCTL_IOR(i) ((i) & _IOC_OUT)
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#define _MINIX_IOCTL_IORW(i) ((i) & _IOC_INOUT)
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#define _MINIX_IOCTL_IOW(i) ((i) & _IOC_IN)
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/* Recognize and decode size of a 'big' ioctl call. */
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#define _MINIX_IOCTL_BIG(i) ((i) & _IOC_BIG)
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#define _MINIX_IOCTL_SIZE_BIG(i) (((i) >> 8) & _IOCPARM_MASK_BIG)
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#else
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/* No fancy encoding on a 16-bit machine. */
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#define _IO(x,y) ((x << 8) | y)
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#define _IOR(x,y,t) _IO(x,y)
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#define _IOW(x,y,t) _IO(x,y)
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#define _IORW(x,y,t) _IO(x,y)
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#endif
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__BEGIN_DECLS
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int ioctl(int _fd, int _request, void *_data);
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__END_DECLS
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#endif /* _M_IOCTL_H */
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