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[FREELDR]

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Improve performance of registry enumeration by returning the enumerated subkey in RegEnumKey, instead of searching it by name again.

svn path=/trunk/; revision=62079
This commit is contained in:
Timo Kreuzer 2014-02-09 18:05:00 +00:00
parent a4a1fab753
commit 5a930877dd
3 changed files with 101 additions and 102 deletions
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10
reactos/boot/freeldr/freeldr/include/registry.h
View file

@ -78,10 +78,12 @@ RegDeleteKey(FRLDRHKEY Key,
PCWSTR Name);
LONG
RegEnumKey(FRLDRHKEY Key,
ULONG Index,
PWCHAR Name,
ULONG* NameSize);
RegEnumKey(
_In_ FRLDRHKEY Key,
_In_ ULONG Index,
_Out_ PWCHAR Name,
_Inout_ ULONG* NameSize,
_Out_opt_ FRLDRHKEY *SubKey);
LONG
RegOpenKey(FRLDRHKEY ParentKey,

9
reactos/boot/freeldr/freeldr/reactos/registry.c
View file

@ -259,13 +259,13 @@ RegpFindSubkeyInIndex(
return NULL;
}
// FIXME: optionally return the subkey node/handle as optimization
LONG
RegEnumKey(
_In_ FRLDRHKEY Key,
_In_ ULONG Index,
_Out_ PWCHAR Name,
_Inout_ ULONG* NameSize)
_Inout_ ULONG* NameSize,
_Out_opt_ FRLDRHKEY *SubKey)
{
PHHIVE Hive = &CmHive->Hive;
PCM_KEY_NODE KeyNode, SubKeyNode;
@ -305,6 +305,11 @@ RegEnumKey(
*NameSize = CmCopyKeyName(SubKeyNode, Name, *NameSize);
if (SubKey != NULL)
{
*SubKey = (FRLDRHKEY)SubKeyNode;
}
TRACE("RegEnumKey done -> %u, '%.*s'\n", *NameSize, *NameSize, Name);
return STATUS_SUCCESS;
}

184
reactos/boot/freeldr/freeldr/windows/wlregistry.c
View file

@ -537,7 +537,7 @@ WinLdrScanRegistry(IN OUT PLIST_ENTRY BootDriverListHead,
{
/* Get the Driver's Name */
ValueSize = sizeof(ServiceName);
rc = RegEnumKey(hServiceKey, Index, ServiceName, &ValueSize);
rc = RegEnumKey(hServiceKey, Index, ServiceName, &ValueSize, &hDriverKey);
TRACE("RegEnumKey(): rc %d\n", (int)rc);
/* Make sure it's valid, and check if we're done */
@ -550,89 +550,6 @@ WinLdrScanRegistry(IN OUT PLIST_ENTRY BootDriverListHead,
}
//TRACE_CH(REACTOS, "Service %d: '%S'\n", (int)Index, ServiceName);
/* open driver Key */
rc = RegOpenKey(hServiceKey, ServiceName, &hDriverKey);
if (rc == ERROR_SUCCESS)
{
/* Read the Start Value */
ValueSize = sizeof(ULONG);
rc = RegQueryValue(hDriverKey, L"Start", &ValueType, (PUCHAR)&StartValue, &ValueSize);
if (rc != ERROR_SUCCESS) StartValue = (ULONG)-1;
//TRACE_CH(REACTOS, " Start: %x \n", (int)StartValue);
/* Read the Tag */
ValueSize = sizeof(ULONG);
rc = RegQueryValue(hDriverKey, L"Tag", &ValueType, (PUCHAR)&TagValue, &ValueSize);
if (rc != ERROR_SUCCESS) TagValue = (ULONG)-1;
//TRACE_CH(REACTOS, " Tag: %x \n", (int)TagValue);
/* Read the driver's group */
DriverGroupSize = sizeof(DriverGroup);
rc = RegQueryValue(hDriverKey, L"Group", NULL, (PUCHAR)DriverGroup, &DriverGroupSize);
//TRACE_CH(REACTOS, " Group: '%S' \n", DriverGroup);
/* Make sure it should be started */
if ((StartValue == 0) &&
(TagValue == OrderList[TagIndex]) &&
(_wcsicmp(DriverGroup, GroupName) == 0)) {
/* Get the Driver's Location */
ValueSize = sizeof(TempImagePath);
rc = RegQueryValue(hDriverKey, L"ImagePath", NULL, (PUCHAR)TempImagePath, &ValueSize);
/* Write the whole path if it suceeded, else prepare to fail */
if (rc != ERROR_SUCCESS) {
TRACE_CH(REACTOS, "ImagePath: not found\n");
TempImagePath[0] = 0;
sprintf(ImagePath, "%s\\system32\\drivers\\%S.sys", DirectoryPath, ServiceName);
} else if (TempImagePath[0] != L'\\') {
sprintf(ImagePath, "%s%S", DirectoryPath, TempImagePath);
} else {
sprintf(ImagePath, "%S", TempImagePath);
TRACE_CH(REACTOS, "ImagePath: '%s'\n", ImagePath);
}
TRACE("Adding boot driver: '%s'\n", ImagePath);
Status = WinLdrAddDriverToList(BootDriverListHead,
L"\\Registry\\Machine\\System\\CurrentControlSet\\Services\\",
TempImagePath,
ServiceName);
if (!Status)
ERR("Failed to add boot driver\n");
} else
{
//TRACE(" Skipping driver '%S' with Start %d, Tag %d and Group '%S' (Current Tag %d, current group '%S')\n",
// ServiceName, StartValue, TagValue, DriverGroup, OrderList[TagIndex], GroupName);
}
}
Index++;
}
}
Index = 0;
while (TRUE)
{
/* Get the Driver's Name */
ValueSize = sizeof(ServiceName);
rc = RegEnumKey(hServiceKey, Index, ServiceName, &ValueSize);
//TRACE_CH(REACTOS, "RegEnumKey(): rc %d\n", (int)rc);
if (rc == ERROR_NO_MORE_ITEMS)
break;
if (rc != ERROR_SUCCESS)
{
FrLdrHeapFree(GroupNameBuffer, TAG_WLDR_NAME);
return;
}
TRACE("Service %d: '%S'\n", (int)Index, ServiceName);
/* open driver Key */
rc = RegOpenKey(hServiceKey, ServiceName, &hDriverKey);
if (rc == ERROR_SUCCESS)
{
/* Read the Start Value */
ValueSize = sizeof(ULONG);
rc = RegQueryValue(hDriverKey, L"Start", &ValueType, (PUCHAR)&StartValue, &ValueSize);
@ -650,27 +567,28 @@ WinLdrScanRegistry(IN OUT PLIST_ENTRY BootDriverListHead,
rc = RegQueryValue(hDriverKey, L"Group", NULL, (PUCHAR)DriverGroup, &DriverGroupSize);
//TRACE_CH(REACTOS, " Group: '%S' \n", DriverGroup);
for (TagIndex = 1; TagIndex <= OrderList[0]; TagIndex++) {
if (TagValue == OrderList[TagIndex]) break;
}
/* Make sure it should be started */
if ((StartValue == 0) &&
(TagIndex > OrderList[0]) &&
(TagValue == OrderList[TagIndex]) &&
(_wcsicmp(DriverGroup, GroupName) == 0)) {
/* Get the Driver's Location */
ValueSize = sizeof(TempImagePath);
rc = RegQueryValue(hDriverKey, L"ImagePath", NULL, (PUCHAR)TempImagePath, &ValueSize);
/* Write the whole path if it suceeded, else prepare to fail */
if (rc != ERROR_SUCCESS) {
TRACE_CH(REACTOS, "ImagePath: not found\n");
TempImagePath[0] = 0;
sprintf(ImagePath, "%ssystem32\\drivers\\%S.sys", DirectoryPath, ServiceName);
sprintf(ImagePath, "%s\\system32\\drivers\\%S.sys", DirectoryPath, ServiceName);
} else if (TempImagePath[0] != L'\\') {
sprintf(ImagePath, "%s%S", DirectoryPath, TempImagePath);
} else {
sprintf(ImagePath, "%S", TempImagePath);
TRACE_CH(REACTOS, "ImagePath: '%s'\n", ImagePath);
}
TRACE(" Adding boot driver: '%s'\n", ImagePath);
TRACE("Adding boot driver: '%s'\n", ImagePath);
Status = WinLdrAddDriverToList(BootDriverListHead,
L"\\Registry\\Machine\\System\\CurrentControlSet\\Services\\",
@ -678,12 +596,86 @@ WinLdrScanRegistry(IN OUT PLIST_ENTRY BootDriverListHead,
ServiceName);
if (!Status)
ERR(" Failed to add boot driver\n");
} else
{
//TRACE(" Skipping driver '%S' with Start %d, Tag %d and Group '%S' (Current group '%S')\n",
// ServiceName, StartValue, TagValue, DriverGroup, GroupName);
ERR("Failed to add boot driver\n");
}
else
{
//TRACE(" Skipping driver '%S' with Start %d, Tag %d and Group '%S' (Current Tag %d, current group '%S')\n",
// ServiceName, StartValue, TagValue, DriverGroup, OrderList[TagIndex], GroupName);
}
Index++;
}
}
Index = 0;
while (TRUE)
{
/* Get the Driver's Name */
ValueSize = sizeof(ServiceName);
rc = RegEnumKey(hServiceKey, Index, ServiceName, &ValueSize, &hDriverKey);
//TRACE_CH(REACTOS, "RegEnumKey(): rc %d\n", (int)rc);
if (rc == ERROR_NO_MORE_ITEMS)
break;
if (rc != ERROR_SUCCESS)
{
FrLdrHeapFree(GroupNameBuffer, TAG_WLDR_NAME);
return;
}
TRACE("Service %d: '%S'\n", (int)Index, ServiceName);
/* Read the Start Value */
ValueSize = sizeof(ULONG);
rc = RegQueryValue(hDriverKey, L"Start", &ValueType, (PUCHAR)&StartValue, &ValueSize);
if (rc != ERROR_SUCCESS) StartValue = (ULONG)-1;
//TRACE_CH(REACTOS, " Start: %x \n", (int)StartValue);
/* Read the Tag */
ValueSize = sizeof(ULONG);
rc = RegQueryValue(hDriverKey, L"Tag", &ValueType, (PUCHAR)&TagValue, &ValueSize);
if (rc != ERROR_SUCCESS) TagValue = (ULONG)-1;
//TRACE_CH(REACTOS, " Tag: %x \n", (int)TagValue);
/* Read the driver's group */
DriverGroupSize = sizeof(DriverGroup);
rc = RegQueryValue(hDriverKey, L"Group", NULL, (PUCHAR)DriverGroup, &DriverGroupSize);
//TRACE_CH(REACTOS, " Group: '%S' \n", DriverGroup);
for (TagIndex = 1; TagIndex <= OrderList[0]; TagIndex++) {
if (TagValue == OrderList[TagIndex]) break;
}
if ((StartValue == 0) &&
(TagIndex > OrderList[0]) &&
(_wcsicmp(DriverGroup, GroupName) == 0)) {
ValueSize = sizeof(TempImagePath);
rc = RegQueryValue(hDriverKey, L"ImagePath", NULL, (PUCHAR)TempImagePath, &ValueSize);
if (rc != ERROR_SUCCESS) {
TRACE_CH(REACTOS, "ImagePath: not found\n");
TempImagePath[0] = 0;
sprintf(ImagePath, "%ssystem32\\drivers\\%S.sys", DirectoryPath, ServiceName);
} else if (TempImagePath[0] != L'\\') {
sprintf(ImagePath, "%s%S", DirectoryPath, TempImagePath);
} else {
sprintf(ImagePath, "%S", TempImagePath);
TRACE_CH(REACTOS, "ImagePath: '%s'\n", ImagePath);
}
TRACE(" Adding boot driver: '%s'\n", ImagePath);
Status = WinLdrAddDriverToList(BootDriverListHead,
L"\\Registry\\Machine\\System\\CurrentControlSet\\Services\\",
TempImagePath,
ServiceName);
if (!Status)
ERR(" Failed to add boot driver\n");
}
else
{
//TRACE(" Skipping driver '%S' with Start %d, Tag %d and Group '%S' (Current group '%S')\n",
// ServiceName, StartValue, TagValue, DriverGroup, GroupName);
}
Index++;