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[KERNEL32]: New macro, not yet used. This one implements the CreateXxxW APIs (or rather, will).

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svn path=/trunk/; revision=52785
This commit is contained in:
Alex Ionescu 2011-07-23 00:28:33 +00:00
parent acd4c15b61
commit f185a728a7
1 changed files with 48 additions and 0 deletions
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48
reactos/dll/win32/kernel32/include/base_x.h
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@ -68,3 +68,51 @@
if (NT_SUCCESS(Status)) return obj##W(UnicodeCache->Buffer, args); \
ConvertAnsiToUnicodeEpilogue
//
// This macro (split it up in 3 pieces to allow for intermediary code in between)
// wraps the usual code path required to create an NT object based on a Unicode
// (Wide) Win32 object creation API.
//
// It makes use of BasepConvertObjectAttributes and allows for a custom access
// mode to be used, and also sets the correct error codes in case of a collision
//
#define CreateNtObjectFromWin32ApiPrologue(sec, name) \
{ \
NTSTATUS Status; \
OBJECT_ATTRIBUTES LocalAttributes; \
POBJECT_ATTRIBUTES ObjectAttributes; \
HANDLE Handle; \
UNICODE_STRING ObjectName; \
if (name) RtlInitUnicodeString(&ObjectName, name); \
ObjectAttributes = BasepConvertObjectAttributes(&LocalAttributes, \
sec, \
name ? &ObjectName : NULL);
#define CreateNtObjectFromWin32ApiBody(ntobj, access, args...) \
Status = NtCreate##ntobj(&Handle, access, ObjectAttributes, args);
#define CreateNtObjectFromWin32ApiEpilogue \
if (NT_SUCCESS(Status)) \
{ \
if (Status == STATUS_OBJECT_NAME_EXISTS) \
SetLastError(ERROR_ALREADY_EXISTS); \
else \
SetLastError(ERROR_SUCCESS); \
return Handle; \
} \
SetLastErrorByStatus(Status); \
return NULL; \
}
//
// This macro uses the CreateNtObjectFromWin32Api macros from above to create an
// NT object based on the Win32 API settings.
//
// Note that it is hardcoded to always use XXX_ALL_ACCESS permissions, which is
// the behavior up until Vista. When/if the target moves to Vista, the macro can
// be improved to support caller-specified access masks, as the underlying macro
// above does support this.
//
#define CreateNtObjectFromWin32Api(obj, ntobj, capsobj, sec, name, args...) \
CreateNtObjectFromWin32ApiPrologue(sec, name); \
CreateNtObjectFromWin32ApiBody(ntobj, capsobj##_ALL_ACCESS, args); \
CreateNtObjectFromWin32ApiEpilogue