From: Russ Cox <rsc@golang.org>
Date: Thu, 20 Jan 2011 18:36:00 +0000 (-0500)
Subject: runtime: drop CLONE_PARENT
X-Git-Tag: weekly.2011-02-01~115
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=3c7104479c3d25db85705ddc6bdc01c19be0a54e;p=gostls13.git

runtime: drop CLONE_PARENT

The functionality we want (shared ppid) is implied
by CLONE_THREAD already, and CLONE_PARENT
causes problems if the Go program is pid 1 (init).

See issue 1406 for more details.

Fixes #1406.

R=adg, iant
CC=golang-dev
https://golang.org/cl/3971044
---

diff --git a/src/pkg/runtime/linux/thread.c b/src/pkg/runtime/linux/thread.c
index 979260ba1d..d5f9a8fb0e 100644
--- a/src/pkg/runtime/linux/thread.c
+++ b/src/pkg/runtime/linux/thread.c
@@ -238,8 +238,7 @@ runtime·newosproc(M *m, G *g, void *stk, void (*fn)(void))
 	/*
 	 * note: strace gets confused if we use CLONE_PTRACE here.
 	 */
-	flags = CLONE_PARENT	/* getppid doesn't change in child */
-		| CLONE_VM	/* share memory */
+	flags = CLONE_VM	/* share memory */
 		| CLONE_FS	/* share cwd, etc */
 		| CLONE_FILES	/* share fd table */
 		| CLONE_SIGHAND	/* share sig handler table */