VOID KdbpSymLoadModuleSymbols	(	IN PUNICODE_STRING	FileName,
		OUT PROSSYM_INFO *	RosSymInfo
	)

Loads a symbol file.

Parameters:

FileName	Filename of the symbol file to load.
RosSymInfo	Pointer to a ROSSYM_INFO which gets filled.

See also:: KdbpSymUnloadModuleSymbols

Definition at line 489 of file kdb_symbols.cmake.c.

Referenced by KdbSymProcessSymbols().

{
    OBJECT_ATTRIBUTES ObjectAttributes;
    HANDLE FileHandle;
    NTSTATUS Status;
    IO_STATUS_BLOCK IoStatusBlock;
    PFILE_OBJECT FileObject;
    PROSSYM_KM_OWN_CONTEXT FileContext;

    /* Allow KDB to break on module load */
    KdbModuleLoaded(FileName);

    if (!LoadSymbols)
    {
        *RosSymInfo = NULL;
        return;
    }

    /*  Try to find cached (already loaded) symbol file  */
    *RosSymInfo = KdbpSymFindCachedFile(FileName);
    if (*RosSymInfo)
    {
        DPRINT("Found cached symbol file %wZ\n", FileName);
        return;
    }

    /*  Open the file  */
    InitializeObjectAttributes(&ObjectAttributes,
                               FileName,
                               OBJ_CASE_INSENSITIVE|OBJ_KERNEL_HANDLE,
                               NULL,
                               NULL);

    DPRINT("Attempting to open image: %wZ\n", FileName);

    Status = ZwOpenFile(&FileHandle,
                        FILE_READ_ACCESS,
                        &ObjectAttributes,
                        &IoStatusBlock,
                        FILE_SHARE_READ|FILE_SHARE_WRITE,
                        FILE_NON_DIRECTORY_FILE|FILE_SYNCHRONOUS_IO_NONALERT);
    if (!NT_SUCCESS(Status))
    {
        DPRINT("Could not open image file(%x): %wZ\n", Status, FileName);
        return;
    }

    DPRINT("Loading symbols from %wZ...\n", FileName);

    Status = ObReferenceObjectByHandle
        (FileHandle,
         FILE_READ_DATA|SYNCHRONIZE,
         NULL,
         KernelMode,
         (PVOID*)&FileObject,
         NULL);

    if (!NT_SUCCESS(Status))
    {
        DPRINT("Could not get the file object\n");
        ZwClose(FileHandle);
        return;
    }

    if ((FileContext = KdbpCaptureFileForSymbols(FileObject)))
    {
        if (RosSymCreateFromFile(FileContext, RosSymInfo))
        {
            /* add file to cache */
            int i;
            UNICODE_STRING TruncatedName = *FileName;
            for (i = (TruncatedName.Length / sizeof(WCHAR)) - 1; i >= 0; i--)
                if (TruncatedName.Buffer[i] == '\\') {
                    TruncatedName.Buffer += i+1;
                    TruncatedName.Length -= (i+1)*sizeof(WCHAR);
                    TruncatedName.MaximumLength -= (i+1)*sizeof(WCHAR);
                    break;
                }
            KdbpSymAddCachedFile(&TruncatedName, *RosSymInfo);
            DPRINT("Installed symbols: %wZ %p\n", &TruncatedName, *RosSymInfo);
        }
        KdbpReleaseFileForSymbols(FileContext);
    }

    ObDereferenceObject(FileObject);
    ZwClose(FileHandle);
}

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