Mem.c File Reference

Implementation of cross APIs for different platforms for memory allocation. More...

#include "pch.h"

Functions
PVOID	PlatformMemAllocateContiguousZeroedMemory (SIZE_T NumberOfBytes)
	Allocate a contiguous zeroed memory.
PVOID	PlatformMemAllocateNonPagedPool (SIZE_T NumberOfBytes)
	Allocate a non-paged buffer.
PVOID	PlatformMemAllocateNonPagedPoolWithQuota (SIZE_T NumberOfBytes)
	Allocate a non-paged buffer (use QUOTA)
PVOID	PlatformMemAllocateZeroedNonPagedPool (SIZE_T NumberOfBytes)
	Allocate a non-paged buffer (zeroed)
VOID	PlatformMemFreePool (PVOID BufferAddress)
	Free (dellocate) a non-paged buffer.

Detailed Description

Implementation of cross APIs for different platforms for memory allocation.

Author

Behrooz Abbassi (Behro.nosp@m.ozAb.nosp@m.bassi.nosp@m.@hyp.nosp@m.erdbg.nosp@m..org)

Sina Karvandi (sina@.nosp@m.hype.nosp@m.rdbg..nosp@m.org)

Version

0.1

Date

2022-01-17

Copyright

This project is released under the GNU Public License v3.

Function Documentation

PlatformMemAllocateContiguousZeroedMemory()

PVOID PlatformMemAllocateContiguousZeroedMemory

(

SIZE_T

NumberOfBytes

)

Allocate a contiguous zeroed memory.

Parameters

NumberOfBytes

Returns

PVOID

{
    PVOID            Result          = NULL;
    PHYSICAL_ADDRESS MaxPhysicalAddr = {.QuadPart = MAXULONG64};
 
    Result = MmAllocateContiguousMemory(NumberOfBytes, MaxPhysicalAddr);
    if (Result != NULL)
        RtlSecureZeroMemory(Result, NumberOfBytes);
 
    return Result;
}

PlatformMemAllocateNonPagedPool()

PVOID PlatformMemAllocateNonPagedPool

(

SIZE_T

NumberOfBytes

)

Allocate a non-paged buffer.

Parameters

NumberOfBytes

Returns

PVOID

{
    PVOID Result = ExAllocatePoolWithTag(NonPagedPool, NumberOfBytes, POOLTAG);
 
    return Result;
}

PlatformMemAllocateNonPagedPoolWithQuota()

PVOID PlatformMemAllocateNonPagedPoolWithQuota

(

SIZE_T

NumberOfBytes

)

Allocate a non-paged buffer (use QUOTA)

Parameters

NumberOfBytes

Returns

PVOID

{
    PVOID Result = ExAllocatePool2(POOL_FLAG_NON_PAGED | POOL_FLAG_USE_QUOTA, NumberOfBytes, POOLTAG);
 
    return Result;
}

PlatformMemAllocateZeroedNonPagedPool()

PVOID PlatformMemAllocateZeroedNonPagedPool

(

SIZE_T

NumberOfBytes

)

Allocate a non-paged buffer (zeroed)

Parameters

NumberOfBytes

Returns

PVOID

{
    PVOID Result = ExAllocatePoolWithTag(NonPagedPool, NumberOfBytes, POOLTAG);
 
    if (Result != NULL)
        RtlSecureZeroMemory(Result, NumberOfBytes);
 
    return Result;
}

PlatformMemFreePool()

VOID PlatformMemFreePool

(

PVOID

BufferAddress

)

Free (dellocate) a non-paged buffer.

Parameters

BufferAddress

Returns

VOID

{
    ExFreePoolWithTag(BufferAddress, POOLTAG);
}