Implement streams IPC mechanism

init/Makefile

@@ -6,6 +6,7 @@ $(eval $(call add_lib,libstring))
 $(eval $(call add_lib,libdebugconsole))
 $(eval $(call add_lib,libaux))
 $(eval $(call add_lib,libmalloc))
+$(eval $(call add_lib,libkb))
 
 cflags += -DPRINTF_INCLUDE_CONFIG_H=1
 

init/init.c

@@ -1,9 +1,11 @@
 #include <debugconsole.h>
+#include <kb.h>
 #include <limits.h>
 #include <malloc.h>
 #include <process.h>
 #include <stddef.h>
 #include <stdint.h>
+#include <streams.h>
 #include <string.h>
 #include <terminal.h>
 
@@ -14,12 +16,17 @@ static int ce_pgid;
 void receiver (void* arg) {
   (void)arg;
 
+  char recv[RECV_MAX];
+  int n;
   for (;;) {
-    char recv[RECV_MAX];
     memset (recv, 0, sizeof (recv));
-    mail_receive (&recv, sizeof (recv) - 1);
 
-    terminal_print (recv, strlen (recv));
+    n = stream_read (ce_pgid, STREAM_OUT, (void*)recv, RECV_MAX - 1);
+
+    if (n > 0)
+      terminal_print (recv, n);
+    else
+      sched ();
   }
 }
 
@@ -29,9 +36,14 @@ void app_main (void) {
   int ce_pid = exec ("sys", "/ce");
   ce_pgid = get_procgroup (ce_pid);
 
-  struct process_data* pdata = process_spawn (&receiver, NULL);
+  process_spawn (&receiver, NULL);
 
-  wait_for_pid (pdata->pid);
+  for (;;) {
+    int ch = kb_read_key ();
 
-  process_data_free (pdata);
+    if (ch == 0)
+      continue;
+
+    stream_write (ce_pgid, STREAM_IN, &ch, 1);
+  }
 }