sys_getrlimit: modified to return mcexec's RLIMIT_STACK

kernel/include/process.h

@@ -36,6 +36,7 @@
 
 #include <waitq.h>
 #include <futex.h>
+#include <rlimit.h>
 
 struct vm_range {
 	struct list_head list;
@@ -90,6 +91,7 @@ struct process {
 	char	sigstack[512];
 	// TODO: backup FR and MMX regs
 	unsigned long sigrc; // return code of rt_sigreturn (x86_64: rax reg.)
+	struct rlimit rlimit_stack;
 };
 
 struct process_vm {

kernel/include/syscall.h

@@ -107,6 +107,8 @@ struct program_load_desc {
 	unsigned long args_len;
 	char *envs;
 	unsigned long envs_len;
+	unsigned long rlimit_stack_cur;
+	unsigned long rlimit_stack_max;
 	struct program_image_section sections[0];
 };