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sys: IRP_MJ_SET_INFORMATION: FileRenameInformation

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This commit is contained in:
Bill Zissimopoulos
2016-02-09 11:26:03 -08:00
parent 38839ddd82
commit 6c94eb3398
6 changed files with 323 additions and 64 deletions
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74
src/sys/util.c
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@ -6,6 +6,7 @@
#include <sys/driver.h>
VOID FspUnicodePathSuffix(PUNICODE_STRING Path, PUNICODE_STRING Remain, PUNICODE_STRING Suffix);
NTSTATUS FspCreateGuid(GUID *Guid);
VOID FspInitializeSynchronousWorkItem(FSP_SYNCHRONOUS_WORK_ITEM *SynchronousWorkItem,
PWORKER_THREAD_ROUTINE Routine, PVOID Context);
@ -17,6 +18,7 @@ VOID FspQueueDelayedWorkItem(FSP_DELAYED_WORK_ITEM *DelayedWorkItem, LARGE_INTEG
static KDEFERRED_ROUTINE FspQueueDelayedWorkItemDPC;
#ifdef ALLOC_PRAGMA
#pragma alloc_text(PAGE, FspUnicodePathSuffix)
#pragma alloc_text(PAGE, FspCreateGuid)
#pragma alloc_text(PAGE, FspInitializeSynchronousWorkItem)
#pragma alloc_text(PAGE, FspExecuteSynchronousWorkItem)
@ -25,6 +27,78 @@ static KDEFERRED_ROUTINE FspQueueDelayedWorkItemDPC;
#pragma alloc_text(PAGE, FspQueueDelayedWorkItem)
#endif
static const LONG Delays[] =
{
-100,
-200,
-300,
-400,
-500,
-1000,
};
PVOID FspAllocMustSucceed(SIZE_T Size)
{
PVOID Result;
LARGE_INTEGER Delay;
for (ULONG i = 0, n = sizeof(Delays) / sizeof(Delays[0]);; i++)
{
Result = FspAlloc(Size);
if (0 != Result)
return Result;
Delay.QuadPart = n > i ? Delays[i] : Delays[n - 1];
KeDelayExecutionThread(KernelMode, FALSE, &Delay);
}
}
PVOID FspAllocateIrpMustSucceed(CCHAR StackSize)
{
PIRP Result;
LARGE_INTEGER Delay;
for (ULONG i = 0, n = sizeof(Delays) / sizeof(Delays[0]);; i++)
{
Result = IoAllocateIrp(StackSize, FALSE);
if (0 != Result)
return Result;
Delay.QuadPart = n > i ? Delays[i] : Delays[n - 1];
KeDelayExecutionThread(KernelMode, FALSE, &Delay);
}
}
VOID FspUnicodePathSuffix(PUNICODE_STRING Path, PUNICODE_STRING Remain, PUNICODE_STRING Suffix)
{
PAGED_CODE();
PWSTR PathBgn, PathEnd, PathPtr, RemainEnd, SuffixBgn;
PathBgn = Path->Buffer;
PathEnd = (PWSTR)((PUINT8)PathBgn + Path->Length);
PathPtr = PathBgn;
RemainEnd = PathEnd;
SuffixBgn = PathEnd;
while (PathEnd > PathPtr)
if (L'\\' == *PathPtr)
{
RemainEnd = PathPtr++;
for (; L'\\' == *PathPtr; PathPtr++)
;
SuffixBgn = PathPtr;
}
else
PathPtr++;
Remain->Length = Remain->MaximumLength = (USHORT)((PUINT8)RemainEnd - (PUINT8)PathBgn);
Remain->Buffer = PathBgn;
Suffix->Length = Suffix->MaximumLength = (USHORT)((PUINT8)PathEnd - (PUINT8)SuffixBgn);
Suffix->Buffer = SuffixBgn;
}
NTSTATUS FspCreateGuid(GUID *Guid)
{
PAGED_CODE();