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/* Copyright (c) 1991 NeXT Computer, Inc. All rights reserved. * * devsw.h - Kernel-level functions to allow adding entries * to cdevsw, bdevsw, and vfssw. * * HISTORY * 20-Jan-93 Doug Mitchell at NeXT * Created. */ #import <sys/types.h> #import <bsd/sys/conf.h> #import <bsd/sys/vfs.h> #import <objc/objc.h> /* for BOOL */ typedef int (*IOSwitchFunc)(); /* * Add an entry to bdevsw. Returns the index into bdevsw at which the entry * was created, or -1 of no space can be found. */ extern int IOAddToBdevswAt( int major, IOSwitchFunc openFunc, IOSwitchFunc closeFunc, IOSwitchFunc strategyFunc, IOSwitchFunc dumpFunc, IOSwitchFunc psizeFunc, BOOL isTape); /* TRUE if device is a tape device*/ extern int IOAddToBdevsw( IOSwitchFunc openFunc, IOSwitchFunc closeFunc, IOSwitchFunc strategyFunc, IOSwitchFunc dumpFunc, IOSwitchFunc psizeFunc, BOOL isTape); /* TRUE if device is a tape device*/ /* * Remove an entry from bdevsw, replace it with a null entry. */ extern void IORemoveFromBdevsw(int bdevswNumber); /* * Add an entry to cdevsw. Returns the index into cdevsw at which the entry * was created, or -1 of no space can be found. */ extern int IOAddToCdevswAt( int major, IOSwitchFunc openFunc, IOSwitchFunc closeFunc, IOSwitchFunc readFunc, IOSwitchFunc writeFunc, IOSwitchFunc ioctlFunc, IOSwitchFunc stopFunc, IOSwitchFunc resetFunc, IOSwitchFunc selectFunc, IOSwitchFunc mmapFunc, IOSwitchFunc getcFunc, IOSwitchFunc putcFunc); extern int IOAddToCdevsw( IOSwitchFunc openFunc, IOSwitchFunc closeFunc, IOSwitchFunc readFunc, IOSwitchFunc writeFunc, IOSwitchFunc ioctlFunc, IOSwitchFunc stopFunc, IOSwitchFunc resetFunc, IOSwitchFunc selectFunc, IOSwitchFunc mmapFunc, IOSwitchFunc getcFunc, IOSwitchFunc putcFunc); /* * Remove an entry from cdevsw, replace it with a null entry. */ extern void IORemoveFromCdevsw(int cdevswNumber); /* * Add an entry to vfssw. Returns the index into vfssw at which the entry * was created, or -1 of no space can be found. */ extern int IOAddToVfsswAt( int index, const char *vfsswName, const struct vfsops *vfsswOps); extern int IOAddToVfssw( const char *vfsswName, const struct vfsops *vfsswOps); /* * Remove an entry from vfssw, replace it with a null entry. */ extern void IORemoveFromVfssw(int vfsswNumber);
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