svn commit: r296501 - head/sys/compat/linux

[Dmitry Chagin]

Author: dchagin
Date: Tue Mar  8 15:08:22 2016
New Revision: 296501
URL: https://svnweb.freebsd.org/changeset/base/296501

Log:
  Link the newly created process to the corresponding parent as
  if CLONE_PARENT is set, then the parent of the new process will
  be the same as that of the calling process.
  
  MFC after:	1 week

Modified:
  head/sys/compat/linux/linux_fork.c

Modified: head/sys/compat/linux/linux_fork.c
==============================================================================
--- head/sys/compat/linux/linux_fork.c	Tue Mar  8 14:55:50 2016	(r296500)
+++ head/sys/compat/linux/linux_fork.c	Tue Mar  8 15:08:22 2016	(r296501)
@@ -222,6 +222,18 @@ linux_clone_proc(struct thread *td, stru
 	if (args->flags & LINUX_CLONE_SETTLS)
 		linux_set_cloned_tls(td2, args->tls);
 
+	/*
+	 * If CLONE_PARENT is set, then the parent of the new process will be 
+	 * the same as that of the calling process.
+	 */
+	if (args->flags & LINUX_CLONE_PARENT) {
+		sx_xlock(&proctree_lock);
+		PROC_LOCK(p2);
+		proc_reparent(p2, td->td_proc->p_pptr);
+		PROC_UNLOCK(p2);
+		sx_xunlock(&proctree_lock);
+	}
+
 #ifdef DEBUG
 	if (ldebug(clone))
 		printf(LMSG("clone: successful rfork to %d, "