Allow command line options from config file.

sysbench/sb_options.c

@@ -87,6 +87,18 @@ option_t *sb_find_option(const char *name)
   return find_option(&options, name);
 }
 
+static void read_config_file(const char *filename)
+{
+  /* read config options from file */
+  FILE *fp = fopen(filename, "r");
+  if (!fp) {
+    perror(filename);
+  } else {
+    read_config(fp, &options);
+    fclose(fp);
+  }
+}
+
 int set_option(const char *name, const char *value, sb_arg_type_t type)
 {
   option_t *opt;
@@ -120,6 +132,9 @@ int set_option(const char *name, const char *value, sb_arg_type_t type)
         add_value(&opt->values, tmp);
       free(tmp);
       break;
+    case SB_ARG_TYPE_FILE:
+      read_config_file(value);
+      break;
     default:
       printf("Unknown argument type: %d", type);
       return 1;
@@ -163,6 +178,9 @@ void sb_print_options(sb_arg_t *opts)
       case SB_ARG_TYPE_STRING:
         fmt = "=STRING";
         break;
+      case SB_ARG_TYPE_FILE:
+        fmt = "=FILENAME";
+        break;
       default:
         fmt = "<UNKNOWN>";
     }

sysbench/sb_options.h

@@ -32,7 +32,8 @@ typedef enum
   SB_ARG_TYPE_SIZE,
   SB_ARG_TYPE_FLOAT,
   SB_ARG_TYPE_STRING,
-  SB_ARG_TYPE_LIST
+  SB_ARG_TYPE_LIST,
+  SB_ARG_TYPE_FILE
 } sb_arg_type_t;
 
 /* Test option definition */

sysbench/scripting/script_lua.c

@@ -395,6 +395,9 @@ lua_State *sb_lua_new_state(const char *scriptname, int thread_id)
         /*FIXME: should be exported as tables */
         lua_pushnil(state);
         break;
+      case SB_ARG_TYPE_FILE:
+        /* FIXME: no need to export anything */
+        break;
       default:
         log_text(LOG_WARNING, "Global option '%s' will not be exported, because"
                  " the type is unknown", opt->name);

sysbench/sysbench.c

@@ -148,6 +148,7 @@ sb_arg_t general_args[] =
   {"rand-seed", "seed for random number generator, ignored when 0", SB_ARG_TYPE_INT, "0"},
   {"rand-pareto-h", "parameter h for pareto distibution", SB_ARG_TYPE_FLOAT,
    "0.2"},
+  {"config-file", "File containing command line options", SB_ARG_TYPE_FILE, NULL},
   {NULL, NULL, SB_ARG_TYPE_NULL, NULL}
 };