ACPICA: iasl/acpiexec: Update input file handling and verification

ACPICA commit 3a6f2a516dd35a4daacbc5b5144d1db763ff2cb0

Improve and cleanup verification of ACPI tables within input files.
Share more code between the disassembler and acpiexec.

This patch only affects application debugger commands, thus it is a
no-op chage for Linux kernel.

Link: https://github.com/acpica/acpica/commit/3a6f2a51
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/acpi/acpica/acapps.h

@@ -95,9 +95,13 @@
 /* acfileio */
 
 acpi_status
-acpi_ac_get_all_tables_from_file(char *filename,
-				 u8 get_only_aml_tables,
-				 struct acpi_new_table_desc **return_list_head);
+ac_get_all_tables_from_file(char *filename,
+			    u8 get_only_aml_tables,
+			    struct acpi_new_table_desc **return_list_head);
+
+u8 ac_is_file_binary(FILE * file);
+
+acpi_status ac_validate_table_header(FILE * file, long table_offset);
 
 /* Values for get_only_aml_tables */
 

drivers/acpi/acpica/dbinput.c

@@ -1056,10 +1056,9 @@ acpi_db_command_dispatch(char *input_buffer,
 			struct acpi_new_table_desc *list_head = NULL;
 
 			status =
-			    acpi_ac_get_all_tables_from_file(acpi_gbl_db_args
-							     [1],
-							     ACPI_GET_ALL_TABLES,
-							     &list_head);
+			    ac_get_all_tables_from_file(acpi_gbl_db_args[1],
+							ACPI_GET_ALL_TABLES,
+							&list_head);
 			if (ACPI_SUCCESS(status)) {
 				acpi_db_load_tables(list_head);
 			}

drivers/acpi/acpica/exmisc.c

@@ -98,9 +98,9 @@ acpi_ex_get_object_reference(union acpi_operand_object *obj_desc,
 
 		default:
 
-			ACPI_ERROR((AE_INFO, "Unknown Reference Class 0x%2.2X",
+			ACPI_ERROR((AE_INFO, "Invalid Reference Class 0x%2.2X",
 				    obj_desc->reference.class));
-			return_ACPI_STATUS(AE_AML_INTERNAL);
+			return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 		}
 		break;
 

drivers/acpi/acpica/tbutils.c

@@ -389,7 +389,7 @@ next_table:
  *
  * PARAMETERS:  signature           - Sig string to be validated
  *
- * RETURN:      TRUE if signature is correct length and has valid characters
+ * RETURN:      TRUE if signature is has 4 valid ACPI characters
  *
  * DESCRIPTION: Validate an ACPI table signature.
  *
@@ -399,12 +399,6 @@ u8 acpi_is_valid_signature(char *signature)
 {
 	u32 i;
 
-	/* Validate the signature length */
-
-	if (strlen(signature) != ACPI_NAME_SIZE) {
-		return (FALSE);
-	}
-
 	/* Validate each character in the signature */
 
 	for (i = 0; i < ACPI_NAME_SIZE; i++) {