use notification framework for orphanizing threads

2 files changed, 6 insertions, 5 deletions

diff --git a/include/kmi/syscalls.h b/include/kmi/syscalls.h
index 93d0ac9..4ae0f0b 100644
--- a/include/kmi/syscalls.h
+++ b/include/kmi/syscalls.h
@@ -186,6 +186,9 @@ enum notify_flag {
 
 	/** An interrupt request. */
 	NOTIFY_IRQ = (1 << 2),
+
+	/** Thread has become orphaned. */
+	NOTIFY_ORPHANED = (1 << 3),
 };
 
 /* function declarations should be somewhere else, this file could be used in
diff --git a/include/kmi/uapi.h b/include/kmi/uapi.h
index 76a759f..42d6e5b 100644
--- a/include/kmi/uapi.h
+++ b/include/kmi/uapi.h
@@ -843,18 +843,16 @@ SYSCALL_DECLARE1(exit, tid);
 
 /**
  * Request that a thread becomes orphant, i.e. eventually attached to the init
- * process. Can be used to stop threads within a process by sending an
- * appropriate signal to the troublesome thread which then detaches itself from
- * its root process.
+ * process. Can be used to stop threads within a process.
  *
  * @param t Current tcb.
- * @param a Unused.
+ * @param tid Which thread to orphanize.
  * @param b Unused.
  * @param c Unused.
  * @param d Unused.
  * @param e Unused.
  */
-SYSCALL_DECLARE0(detach);
+SYSCALL_DECLARE1(detach, tid);
 
 /** @} */