MOUNTMGR_CHANGE_NOTIFY_INFO - NtDoc

Native API online documentation, based on the System Informer (formerly Process Hacker) phnt headers
#ifndef _NTIOAPI_H

// Input structure for IOCTL_MOUNTMGR_CHANGE_NOTIFY.
// Output structure for IOCTL_MOUNTMGR_CHANGE_NOTIFY.
typedef struct _MOUNTMGR_CHANGE_NOTIFY_INFO
{
    ULONG EpicNumber;
} MOUNTMGR_CHANGE_NOTIFY_INFO, *PMOUNTMGR_CHANGE_NOTIFY_INFO;

#endif

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This structure is documented in Windows Driver Kit.