Tail now works (costs 6k). Several other updates.

-Erik

utility.c

@@ -289,7 +289,7 @@ const char *modeString(int mode)
 #endif
 
 
-#ifdef BB_TAR
+#if defined BB_TAR
 /*
  * Return the standard ls-like time string from a time_t
  * This is static and so is overwritten on each call.
@@ -340,8 +340,10 @@ int fullWrite(int fd, const char *buf, int len)
 
     return total;
 }
+#endif
 
 
+#if defined BB_TAR || defined BB_TAIL
 /*
  * Read all of the supplied buffer from a file.
  * This does multiple reads as necessary.
@@ -1018,6 +1020,55 @@ extern void whine_if_fstab_is_missing()
 #endif
 
 
+#if defined BB_DD || defined BB_TAIL
+/*
+ * Read a number with a possible multiplier.
+ * Returns -1 if the number format is illegal.
+ */
+extern long getNum (const char *cp)
+{
+    long value;
+
+    if (!isDecimal (*cp))
+	return -1;
+
+    value = 0;
+
+    while (isDecimal (*cp))
+	value = value * 10 + *cp++ - '0';
+
+    switch (*cp++) {
+    case 'm':
+	value *= 1048576;
+	break;
+
+    case 'k':
+	value *= 1024;
+	break;
+
+    case 'b':
+	value *= 512;
+	break;
+
+    case 'w':
+	value *= 2;
+	break;
+
+    case '\0':
+	return value;
+
+    default:
+	return -1;
+    }
+
+    if (*cp)
+	return -1;
+
+    return value;
+}
+#endif
+
+
 /* END CODE */