#include <IOKit/storage/IOMediaBSDClient.h>
Kernel (KEXT) › IOKit

IOKit/storage/IOMediaBSDClient.h Kernel.framework

Kernel
includes: sys/disk.h, sys/conf.h, IOKit/storage/IOMedia.h
1 function

function_IOMediaBSDClientGetThrottleMask

__exported UInt64 _IOMediaBSDClientGetThrottleMask(IOMedia * media)
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claude-fable-5, 2026-08-24 · not from Apple sources · verified against xnu SDK Kernel.framework IOKit/storage/IOMediaBSDClient.h; usage in bsd/miscfs/specfs/spec_vnops.c
Returns the throttle mask for the given IOMedia: a 64-bit mask identifying the whole-media BSD disks underlying the media object. This is the value the DKIOCGETTHROTTLEMASK ioctl reports, which the BSD I/O throttling layer (spec_vnops, vfs mount throttling) uses to associate I/O with a throttleable device. Exported from IOStorageFamily; implementation not in xnu.