Keep track of program image path.

sortix/kernel.cpp

@@ -46,6 +46,7 @@
 #include <sortix/kernel/time.h>
 #include <sortix/kernel/scheduler.h>
 #include <sortix/kernel/fcache.h>
+#include <sortix/kernel/string.h>
 
 #include <sortix/fcntl.h>
 #include <sortix/stat.h>
@@ -266,6 +267,9 @@ extern "C" void KernelInit(unsigned long magic, multiboot_info_t* bootinfo)
 	addr_t systemaddrspace = Memory::GetAddressSpace();
 	system->addrspace = systemaddrspace;
 
+	if ( !(system->program_image_path = String::Clone("<kernel process>")) )
+		Panic("Unable to clone string for system process name");
+
 	// We construct this thread manually for bootstrap reasons. We wish to
 	// create a kernel thread that is the current thread and isn't put into the
 	// scheduler's set of runnable threads, but rather run whenever there is

sortix/process.cpp

@@ -112,6 +112,7 @@ namespace Sortix
 		nextsibling = NULL;
 		firstchild = NULL;
 		zombiechild = NULL;
+		program_image_path = NULL;
 		parentlock = KTHREAD_MUTEX_INITIALIZER;
 		childlock = KTHREAD_MUTEX_INITIALIZER;
 		zombiecond = KTHREAD_COND_INITIALIZER;
@@ -129,6 +130,8 @@ namespace Sortix
 
 	Process::~Process()
 	{
+		if ( program_image_path )
+			delete[] program_image_path;
 		assert(!zombiechild);
 		assert(!firstchild);
 		assert(!addrspace);
@@ -568,6 +571,9 @@ namespace Sortix
 		clone->mtable = mtable;
 		kthread_mutex_unlock(&ptrlock);
 
+		if ( !(clone->program_image_path = String::Clone(program_image_path)) )
+			failure = false;
+
 		if ( pid == 1)
 			assert(dtable->Get(1));
 
@@ -601,8 +607,15 @@ namespace Sortix
 		(void) programname;
 		assert(CurrentProcess() == this);
 
+		char* programname_clone = String::Clone(programname);
+		if ( !programname_clone )
+			return -1;
+
 		addr_t entry = ELF::Construct(CurrentProcess(), program, programsize);
-		if ( !entry ) { return -1; }
+		if ( !entry ) { delete[] programname_clone; return -1; }
+
+		delete[] program_image_path;
+		program_image_path = programname_clone; programname_clone = NULL;
 
 		// TODO: This may be an ugly hack!
 		// TODO: Move this to x86/process.cpp.

sortix/process.h

@@ -80,6 +80,7 @@ namespace Sortix
 		static pid_t AllocatePID();
 
 	public:
+		char* program_image_path;
 		addr_t addrspace;
 		pid_t pid;
 		uid_t uid;