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sys: IRP_MJ_CREATE

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This commit is contained in:
Bill Zissimopoulos
2015-12-05 11:31:51 -08:00
parent 0e170901c8
commit 0d49e87468
4 changed files with 46 additions and 9 deletions
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25
src/sys/driver.h
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@ -363,9 +363,13 @@ typedef struct
{
FSRTL_ADVANCED_FCB_HEADER Header;
FSP_FILE_CONTEXT_NONPAGED *NonPaged;
/* interlocked access */
LONG RefCount;
/* protected by Header.Resource */
LONG OpenCount;
SHARE_ACCESS ShareAccess;
/* protected by containing fsvol lock */
BOOLEAN DeletePending;
/* read-only after creation */
UINT64 UserContext;
UNICODE_STRING FileName;
WCHAR FileNameBuf[];
@ -375,13 +379,26 @@ VOID FspFileContextDelete(FSP_FILE_CONTEXT *Context);
static inline
VOID FspFileContextOpen(FSP_FILE_CONTEXT *Context)
{
InterlockedIncrement(&Context->OpenCount);
ASSERT(0 == Context->OpenCount || ExIsResourceAcquiredExclusiveLite(Context->Header.Resource));
Context->OpenCount++;
}
static inline
VOID FspFileContextClose(FSP_FILE_CONTEXT *Context)
{
LONG Result = InterlockedDecrement(&Context->OpenCount);
if (0 == Result)
ASSERT(ExIsResourceAcquiredExclusiveLite(Context->Header.Resource));
ASSERT(0 < Context->OpenCount);
Context->OpenCount--;
}
static inline
VOID FspFileContextRetain(FSP_FILE_CONTEXT *Context)
{
InterlockedIncrement(&Context->RefCount);
}
static inline
VOID FspFileContextRelease(FSP_FILE_CONTEXT *Context)
{
LONG RefCount = InterlockedDecrement(&Context->RefCount);
if (0 == RefCount)
FspFileContextDelete(Context);
}