cmd.exe: Support exit [/b] returncode.

programs/cmd/batch.c

@@ -87,13 +87,14 @@ BATCH_CONTEXT *prev_context;
   context -> command = command;
   context -> shift_count = 0;
   context -> prev_context = prev_context;
+  context -> skip_rest = FALSE;
 
 /*
  * 	Work through the file line by line. Specific batch commands are processed here,
  * 	the rest are handled by the main command processor.
  */
 
-  while (WCMD_fgets (string, sizeof(string), h)) {
+  while (context -> skip_rest == FALSE && WCMD_fgets (string, sizeof(string), h)) {
       if (strlen(string) == MAXSTRING -1) {
           WCMD_output_asis( "Line in Batch processing possibly truncated. Using:\n");
           WCMD_output_asis( string);

programs/cmd/builtins.c

@@ -1159,3 +1159,22 @@ BOOL status;
   }
   return 1;
 }
+
+/**************************************************************************
+ * WCMD_exit
+ *
+ * Exit either the process, or just this batch program
+ *
+ */
+
+void WCMD_exit (void) {
+
+    int rc = atoi(param1); /* Note: atoi of empty parameter is 0 */
+
+    if (context && lstrcmpi(quals, "/B") == 0) {
+        errorlevel = rc;
+        context -> skip_rest = TRUE;
+    } else {
+        ExitProcess(rc);
+    }
+}

programs/cmd/wcmd.h

@@ -37,6 +37,7 @@ void WCMD_directory (void);
 void WCMD_echo (const char *);
 void WCMD_endlocal (void);
 void WCMD_enter_paged_mode(void);
+void WCMD_exit (void);
 void WCMD_for (char *);
 void WCMD_give_help (char *command);
 void WCMD_goto (void);
@@ -83,6 +84,7 @@ typedef struct {
   HANDLE h;             /* Handle to the open batch file */
   int shift_count;	/* Number of SHIFT commands executed */
   void *prev_context;	/* Pointer to the previous context block */
+  BOOL  skip_rest;      /* Skip the rest of the batch program and exit */
 } BATCH_CONTEXT;
 
 #endif /* !RC_INVOKED */

programs/cmd/wcmdmain.c

@@ -244,7 +244,7 @@ int main (int argc, char *argv[])
       else
           WCMD_process_command(cmd);
       HeapFree(GetProcessHeap(), 0, cmd);
-      return 0;
+      return errorlevel;
   }
 
   SetConsoleMode(GetStdHandle(STD_INPUT_HANDLE), ENABLE_LINE_INPUT |
@@ -504,7 +504,8 @@ void WCMD_process_command (char *command)
         WCMD_volume (0, p);
         break;
       case WCMD_EXIT:
-        ExitProcess (0);
+        WCMD_exit ();
+        break;
       default:
         WCMD_run_program (whichcmd, 0);
     }