Use standard POSIX "ustar" format for the scratch disk.

[pintos-anon] / src / threads / init.c

diff --git a/src/threads/init.c b/src/threads/init.c
index 5893ce970b21fe12f707e4c3be55767e31c0034f..bb7e3017588db779fe8f6e13036f1499ac632769 100644 (file)
--- a/src/threads/init.c
+++ b/src/threads/init.c
@@ -13,6 +13,7 @@
 #include "devices/serial.h"
 #include "devices/timer.h"
 #include "devices/vga.h"
+#include "devices/rtc.h"
 #include "threads/interrupt.h"
 #include "threads/io.h"
 #include "threads/loader.h"
@@ -251,6 +252,16 @@ parse_options (char **argv)
       else
         PANIC ("unknown option `%s' (use -h for help)", name);
     }
+
+  /* Initialize the random number generator based on the system
+     time.  This has no effect if an "-rs" option was specified.
+
+     When running under Bochs, this is not enough by itself to
+     get a good seed value, because the pintos script sets the
+     initial time to a predictable value, not to the local time,
+     for reproducibility.  To fix this, give the "-r" option to
+     the pintos script to request real-time execution. */
+  random_init (rtc_get_time ());
   
   return argv;
 }
@@ -291,8 +302,8 @@ run_actions (char **argv)
       {"ls", 1, fsutil_ls},
       {"cat", 2, fsutil_cat},
       {"rm", 2, fsutil_rm},
-      {"put", 2, fsutil_put},
-      {"get", 2, fsutil_get},
+      {"extract", 1, fsutil_extract},
+      {"append", 2, fsutil_append},
 #endif
       {NULL, 0, NULL},
     };
@@ -340,8 +351,8 @@ usage (void)
           "  cat FILE           Print FILE to the console.\n"
           "  rm FILE            Delete FILE.\n"
           "Use these actions indirectly via `pintos' -g and -p options:\n"
-          "  put FILE           Put FILE into file system from scratch disk.\n"
-          "  get FILE           Get FILE from file system into scratch disk.\n"
+          "  extract            Untar from scratch disk into file system.\n"
+          "  append FILE        Append FILE to tar file on scratch disk.\n"
 #endif
           "\nOptions:\n"
           "  -h                 Print this help message and power off.\n"