NtSetQuotaInformationFile - NtDoc

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

NTSYSCALLAPI
NTSTATUS
NTAPI
NtSetQuotaInformationFile(
    _In_ HANDLE FileHandle,
    _Out_ PIO_STATUS_BLOCK IoStatusBlock,
    _In_reads_bytes_(Length) PVOID Buffer,
    _In_ ULONG Length
    );

#endif

View code on GitHub
#ifndef _NTZWAPI_H

NTSYSCALLAPI
NTSTATUS
NTAPI
ZwSetQuotaInformationFile(
    _In_ HANDLE FileHandle,
    _Out_ PIO_STATUS_BLOCK IoStatusBlock,
    _In_reads_bytes_(Length) PVOID Buffer,
    _In_ ULONG Length
    );

#endif

View code on GitHub

This function is documented in Windows Driver Kit here and here.