Kernel: Copy command line to a safe place

This avoids kmalloc overwriting it because it may be within the
kmalloc or eternal pool.

1 files changed, 15 insertions, 2 deletions

diff --git a/Kernel/CommandLine.cpp b/Kernel/CommandLine.cpp
index 3155dd6bdc..94109ea450 100644
--- a/Kernel/CommandLine.cpp
+++ b/Kernel/CommandLine.cpp
@@ -25,21 +25,34 @@
  */
 
 #include <Kernel/CommandLine.h>
+#include <Kernel/StdLib.h>
 
 namespace Kernel {
 
+static char s_cmd_line[1024];
 static CommandLine* s_the;
 
+void CommandLine::early_initialize(const char* cmd_line)
+{
+    if (!cmd_line)
+        return;
+    size_t length = strlen(cmd_line);
+    if (length >= sizeof(s_cmd_line))
+        length = sizeof(s_cmd_line) -1;
+    memcpy(s_cmd_line, cmd_line, length);
+    s_cmd_line[length] = '\0';
+}
+
 const CommandLine& kernel_command_line()
 {
     ASSERT(s_the);
     return *s_the;
 }
 
-void CommandLine::initialize(const String& string)
+void CommandLine::initialize()
 {
     ASSERT(!s_the);
-    s_the = new CommandLine(string);
+    s_the = new CommandLine(s_cmd_line);
 }
 
 CommandLine::CommandLine(const String& string)