Add --all option to crossystem to print normally-hidden fields

utility/crossystem_main.c

 /* Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  *
  * Chrome OS firmware/system interface utility
  */
 
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ skipping 63 matching lines @@
   /* Terminate with null name */
   {NULL, 0, NULL}
 };
 
 
 /* Print help */
 void PrintHelp(const char *progname) {
   const Param *p;
 
   printf("\nUsage:\n"
-         "  %s\n"
+         "  %s [--all]\n"
          "    Prints all parameters with descriptions and current values.\n"
+         "    If --all is specified, prints even normally hidden fields.\n"
          "  %s [param1 [param2 [...]]]\n"
          "    Prints the current value(s) of the parameter(s).\n"
          "  %s [param1=value1] [param2=value2 [...]]]\n"
          "    Sets the parameter(s) to the specified value(s).\n"
          "  %s [param1?value1] [param2?value2 [...]]]\n"
          "    Checks if the parameter(s) all contain the specified value(s).\n"
          "Stops at the first error."
          "\n"
          "Valid parameters:\n", progname, progname, progname, progname);
   for (p = sys_param_list; p->name; p++)
@@ skipping 70 matching lines @@
   } else {
     int v = VbGetSystemPropertyInt(p->name);
     if (v == -1)
       return 1;
     printf(p->format ? p->format : "%d", v);
   }
   return 0;
 }
 
 
-/* Print all parameters with descriptions,
+/* Print all parameters with descriptions.  If force_all!=0, prints even
+ * parameters that specify the NO_PRINT_ALL flag.
  *
  * Returns 0 if success, non-zero if error. */
-int PrintAllParams(void) {
+int PrintAllParams(int force_all) {
   const Param* p;
   int retval = 0;
   char buf[MAX_STRING];
   const char* value;
 
   for (p = sys_param_list; p->name; p++) {
-    if (p->flags & NO_PRINT_ALL)
+    if (0 == force_all && (p->flags & NO_PRINT_ALL))
       continue;
     if (p->flags & IS_STRING) {
       value = VbGetSystemPropertyString(p->name, buf, sizeof(buf));
     } else {
       int v = VbGetSystemPropertyInt(p->name);
       if (v == -1)
         value = NULL;
       else {
         snprintf(buf, sizeof(buf), p->format ? p->format : "%d", v);
         value = buf;
@@ skipping 11 matching lines @@
   int i;
 
   char* progname = strrchr(argv[0], '/');
   if (progname)
     progname++;
   else
     progname = argv[0];
 
   /* If no args specified, print all params */
   if (argc == 1)
-    return PrintAllParams();
+    return PrintAllParams(0);
+  /* --all or -a prints all params including normally hidden ones */
+  if (!strcasecmp(argv[1], "--all") || !strcmp(argv[1], "-a"))
+    return PrintAllParams(1);
 
   /* Print help if needed */
   if (!strcasecmp(argv[1], "-h") || !strcmp(argv[1], "-?")) {
     PrintHelp(progname);
     return 0;
   }
 
   /* Otherwise, loop through params and get/set them */
   for (i = 1; i < argc && retval == 0; i++) {
     char* has_set = strchr(argv[i], '=');
@@ skipping 29 matching lines @@
     if (has_set)
       retval = SetParam(p, value);
     else if (has_expect)
       retval = CheckParam(p, value);
     else
       retval = PrintParam(p);
   }
 
   return retval;
 }