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[NTOSKRNL] Simplify buffer definition in MiQueryMemorySectionName().

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Also take into account the UNICODE_STRING structure while computing whole size
This is based on Thomas' patch.

CORE-12043
This commit is contained in:
Pierre Schweitzer 2019-09-29 14:16:44 +02:00
parent ad547c960f
commit 3b78ca210e
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GPG key ID: 7545556C3D585B0B
1 changed files with 8 additions and 6 deletions
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14
ntoskrnl/mm/ARM3/section.c
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@ -1923,11 +1923,12 @@ MiQueryMemorySectionName(IN HANDLE ProcessHandle,
{
_SEH2_TRY
{
RtlInitUnicodeString(&SectionName->SectionFileName, SectionName->NameBuffer);
SectionName->SectionFileName.MaximumLength = (USHORT)MemoryInformationLength;
RtlInitEmptyUnicodeString(&SectionName->SectionFileName,
(PWSTR)(SectionName + 1),
MemoryInformationLength - sizeof(MEMORY_SECTION_NAME));
RtlCopyUnicodeString(&SectionName->SectionFileName, &ModuleFileName);
if (ReturnLength) *ReturnLength = ModuleFileName.Length;
if (ReturnLength) *ReturnLength = ModuleFileName.Length + sizeof(MEMORY_SECTION_NAME);
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
@ -1938,11 +1939,12 @@ MiQueryMemorySectionName(IN HANDLE ProcessHandle,
}
else
{
RtlInitUnicodeString(&SectionName->SectionFileName, SectionName->NameBuffer);
SectionName->SectionFileName.MaximumLength = (USHORT)MemoryInformationLength;
RtlInitEmptyUnicodeString(&SectionName->SectionFileName,
(PWSTR)(SectionName + 1),
MemoryInformationLength - sizeof(MEMORY_SECTION_NAME));
RtlCopyUnicodeString(&SectionName->SectionFileName, &ModuleFileName);
if (ReturnLength) *ReturnLength = ModuleFileName.Length;
if (ReturnLength) *ReturnLength = ModuleFileName.Length + sizeof(MEMORY_SECTION_NAME);
}