Changeset 82833 in vbox

Timestamp:

Jan 22, 2020 4:22:59 PM (5 years ago)

Author:

vboxsync

Message:

IPRT/nt: Added OBJECT_BASIC_INFORMATION and promoted rtNtPathFromHandle to public access. ticketref:19003

Location:

trunk

Files:

• include/iprt/nt/nt.h (modified) (2 diffs)
• src/VBox/Runtime/r3/nt/pathint-nt.cpp (modified) (4 diffs)

trunk/include/iprt/nt/nt.h

@@ -390 +390 @@
  */
 RTDECL(int) RTNtPathEnsureSpace(struct _UNICODE_STRING *pNtName, size_t cwcMin);
+
+/**
+ * Gets the NT path to the object represented by the given handle.
+ *
+ * @returns IPRT status code.
+ * @param   pNtName             Where to return the NT path.  Free using
+ *                              RTUtf16Alloc.
+ * @param   hHandle             The handle.
+ * @param   cwcExtra            How much extra space is needed.
+ */
+RTDECL(int) RTNtPathFromHandle(struct _UNICODE_STRING *pNtName, HANDLE hHandle, size_t cwcExtra);
 
 /**
@@ -2749 +2760 @@
 
 #endif /* IPRT_NT_USE_WINTERNL */
+
+/** For use with ObjectBasicInformation.
+ * A watered down version of this struct appears under the name
+ * PUBLIC_OBJECT_BASIC_INFORMATION in ntifs.h.  It only defines
+ * the first four members, so don't trust the rest.  */
+typedef struct _OBJECT_BASIC_INFORMATION
+{
+    ULONG Attributes;
+    ACCESS_MASK GrantedAccess;
+    ULONG HandleCount;
+    ULONG PointerCount;
+    /* Not in ntifs.h: */
+    ULONG PagedPoolCharge;
+    ULONG NonPagedPoolCharge;
+    ULONG Reserved[3];
+    ULONG NameInfoSize;
+    ULONG TypeInfoSize;
+    ULONG SecurityDescriptorSize;
+    LARGE_INTEGER CreationTime;
+} OBJECT_BASIC_INFORMATION;
+typedef OBJECT_BASIC_INFORMATION *POBJECT_BASIC_INFORMATION;
 
 /** For use with ObjectHandleFlagInformation. */

trunk/src/VBox/Runtime/r3/nt/pathint-nt.cpp

@@ -572 +572 @@
  * @param   cwcExtra            How much extra space is needed.
  */
-static int rtNtPathFromHandle(struct _UNICODE_STRING *pNtName, HANDLE hHandle, size_t cwcExtra)
+RTDECL(int) RTNtPathFromHandle(struct _UNICODE_STRING *pNtName, HANDLE hHandle, size_t cwcExtra)
 {
     /*
@@ -634 +634 @@
     {
         RTUtf16Free(pNtName->Buffer);
-        rc = rtNtPathFromHandle(pNtName, *phRootDir, pNtName->Length / sizeof(RTUTF16) + 2);
+        rc = RTNtPathFromHandle(pNtName, *phRootDir, pNtName->Length / sizeof(RTUTF16) + 2);
         if (RT_SUCCESS(rc))
         {
@@ -646 +646 @@
         UNICODE_STRING RootDir;
         size_t const   cwcAppend = pNtName->Length / sizeof(RTUTF16);
-        rc = rtNtPathFromHandle(&RootDir, *phRootDir, cwcAppend + 2);
+        rc = RTNtPathFromHandle(&RootDir, *phRootDir, cwcAppend + 2);
         if (RT_SUCCESS(rc))
         {
@@ -802 +802 @@
                                             {
                                                 RTUtf16Free(pwszDst);
-                                                rc = rtNtPathFromHandle(pNtName, *phRootDir, cwcMax + 2);
+                                                rc = RTNtPathFromHandle(pNtName, *phRootDir, cwcMax + 2);
                                                 if (RT_FAILURE(rc))
                                                     return rc;