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71fefa32db
* Add an NDK header to define INIT_FUNCTION/INIT_SECTION globally * Use _declspec(allocate(x)) and _declspec(code_seg(x)) on MSVC versions that support it * Use INIT_FUNCTION on functions only and INIT_SECTION on data only (required by MSVC) * Place INIT_FUNCTION before the return type (required by MSVC) * Make sure declarations and implementations share the same modifiers (required by MSVC) * Add a global linker option to suppress warnings about defined but unused INIT section * Merge INIT section into .text in freeldr
128 lines
3.9 KiB
C
128 lines
3.9 KiB
C
/*
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* PROJECT: ReactOS Kernel
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* LICENSE: GPL - See COPYING in the top level directory
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* FILE: ntoskrnl/ke/config.c
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* PURPOSE: Configuration Tree Routines
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* PROGRAMMERS: Alex Ionescu (alex.ionescu@reactos.org)
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*/
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/* INCLUDES ******************************************************************/
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#include <ntoskrnl.h>
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#define NDEBUG
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#include <debug.h>
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/* FUNCTIONS *****************************************************************/
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/*
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* @implemented
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*/
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INIT_FUNCTION
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PCONFIGURATION_COMPONENT_DATA
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NTAPI
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KeFindConfigurationEntry(IN PCONFIGURATION_COMPONENT_DATA Child,
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IN CONFIGURATION_CLASS Class,
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IN CONFIGURATION_TYPE Type,
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IN PULONG ComponentKey OPTIONAL)
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{
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PCONFIGURATION_COMPONENT_DATA NextLink = NULL;
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/* Start Search at Root */
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return KeFindConfigurationNextEntry(Child,
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Class,
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Type,
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ComponentKey,
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&NextLink);
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}
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/*
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* @implemented
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*/
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INIT_FUNCTION
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PCONFIGURATION_COMPONENT_DATA
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NTAPI
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KeFindConfigurationNextEntry(IN PCONFIGURATION_COMPONENT_DATA Child,
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IN CONFIGURATION_CLASS Class,
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IN CONFIGURATION_TYPE Type,
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IN PULONG ComponentKey OPTIONAL,
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IN PCONFIGURATION_COMPONENT_DATA *NextLink)
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{
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ULONG Key = 0;
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ULONG Mask = 0;
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PCONFIGURATION_COMPONENT_DATA Sibling;
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PCONFIGURATION_COMPONENT_DATA ReturnEntry;
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/* If we did get a key, then use it instead */
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if (ComponentKey)
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{
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Key = *ComponentKey;
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Mask = -1;
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}
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/* Loop the Components until we find a a match */
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while (Child)
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{
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/* Check if we are starting somewhere already */
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if (*NextLink)
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{
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/* If we've found the place where we started, clear and continue */
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if (Child == *NextLink) *NextLink = NULL;
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}
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else
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{
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/* Try to get a match */
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if ((Child->ComponentEntry.Class) == Class &&
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(Child->ComponentEntry.Type) == Type &&
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(Child->ComponentEntry.Key & Mask) == Key)
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{
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/* Match found */
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return Child;
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}
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}
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/* Now we've also got to lookup the siblings */
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Sibling = Child->Sibling;
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while (Sibling)
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{
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/* Check if we are starting somewhere already */
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if (*NextLink)
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{
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/* If we've found the place where we started, clear and continue */
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if (Sibling == *NextLink) *NextLink = NULL;
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}
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else
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{
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/* Try to get a match */
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if ((Sibling->ComponentEntry.Class == Class) &&
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(Sibling->ComponentEntry.Type == Type) &&
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(Sibling->ComponentEntry.Key & Mask) == Key)
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{
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/* Match found */
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return Sibling;
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}
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}
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/* We've got to check if the Sibling has a Child as well */
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if (Sibling->Child)
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{
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/* We're just going to call ourselves again */
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ReturnEntry = KeFindConfigurationNextEntry(Sibling->Child,
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Class,
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Type,
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ComponentKey,
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NextLink);
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if (ReturnEntry) return ReturnEntry;
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}
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/* Next Sibling */
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Sibling = Sibling->Sibling;
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}
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/* Next Child */
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Child = Child->Child;
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}
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/* If we got here, nothing was found */
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return NULL;
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}
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