From d998691425c3c82a0f881cd3e04c743b7e42c0cc Mon Sep 17 00:00:00 2001
From: Tomoki Shirasawa <sira@popeye.cc.u-tokyo.ac.jp>
Date: Fri, 13 Feb 2015 13:51:00 +0900
Subject: [PATCH] fix setpgid(0, 0)

---
 kernel/syscall.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/kernel/syscall.c b/kernel/syscall.c
index c7ae6583..1acf3b1d 100644
--- a/kernel/syscall.c
+++ b/kernel/syscall.c
@@ -1925,6 +1925,11 @@ SYSCALL_DECLARE(setpgid)
 	unsigned long irqstate = 0;
 	struct process *tproc;
 
+	if(pid == 0)
+		pid = proc->ftn->pid;
+	if(pgid == 0)
+		pgid = pid;
+
 	if(proc->ftn->pid != pid){
 		tproc = findthread_and_lock(pid, pid, &lock, &irqstate);
 		if(tproc){