Prepare to reimplement copy-on-write. previous commit stable.

tasks/mm0/include/env.h

@@ -1,6 +0,0 @@
-#ifndef __MM0_ENV__
-#define __MM0_ENV__
-
-int task_prepare_environment(struct tcb *t);
-
-#endif

tasks/mm0/include/proc.h

@@ -0,0 +1,13 @@
+#ifndef __MM0_PROC__
+#define __MM0_PROC__
+
+struct proc_files {
+	struct vm_file *stackfile;	/* ZI, private, devzero, then autogenerated */
+	struct vm_file *envfile;	/* NON-ZI, private, autogenerated, then autogenerated */
+	struct vm_file *datafile;	/* NON-ZI, private, real file, then autogenerated */
+	struct vm_file *bssfile;	/* ZI private, devzero, then autogenerated */
+};
+
+int task_prepare_procfiles(struct tcb *t);
+
+#endif

tasks/mm0/include/task.h

@@ -29,6 +29,13 @@ struct file_descriptor {
 	struct vm_file *vmfile;
 };
 
+struct proc_files {
+	struct vm_file *stackfile;	/* ZI, private, devzero, then autogenerated */
+	struct vm_file *envfile;	/* NON-ZI, private, autogenerated, then autogenerated */
+	struct vm_file *datafile;	/* NON-ZI, private, real file, then autogenerated */
+	struct vm_file *bssfile;	/* ZI private, devzero, then autogenerated */
+};
+
 /* Stores all task information that can be kept in userspace. */
 struct tcb {
 	/* Task list */
@@ -63,8 +70,8 @@ struct tcb {
 	/* UTCB address */
 	unsigned long utcb_address;
 
-	/* Per-task environment file */
+	/* Task's private files */
-	struct vm_file *env_file;
+	struct proc_files proc_files;
 
 	/* Virtual memory areas */
 	struct list_head vm_area_list;

tasks/mm0/src/proc.c

@@ -22,6 +22,7 @@
 #include <string.h>
 #include <file.h>
 #include <task.h>
+#include <proc.h>
 
 struct envdata {
 	struct list_head list;

tasks/mm0/src/task.c

@@ -24,7 +24,7 @@
 #include <memory.h>
 #include <file.h>
 #include <utcb.h>
-#include <env.h>
+#include <proc.h>
 
 struct tcb_head {
 	struct list_head list;