[lxc-devel] [PATCH 4/7] start child in its own process group, and put it into the foreground

[Ferenc Wagner]

Signed-off-by: Ferenc Wagner <wferi at niif.hu>
---
 src/lxc/start.c |   17 +++++++++++++++++
 1 files changed, 17 insertions(+), 0 deletions(-)

diff --git a/src/lxc/start.c b/src/lxc/start.c
index b69ac88..851d383 100644
--- a/src/lxc/start.c
+++ b/src/lxc/start.c
@@ -463,6 +463,7 @@ int lxc_spawn(struct lxc_handler *handler)
 	int clone_flags;
 	int failed_before_rename = 0;
 	const char *name = handler->name;
+	int ctty;
 
 	if (lxc_sync_init(handler))
 		return -1;
@@ -509,6 +510,22 @@ int lxc_spawn(struct lxc_handler *handler)
 		}
 	}
 
+	if (setpgid(handler->pid, 0)) {
+		SYSERROR("failed to create new process group");
+		goto out_delete_net;
+	}
+	DEBUG("created new process group %d", handler->pid);
+	ctty = open("/dev/tty", O_RDONLY);
+	if (ctty) {
+		int ret = tcsetpgrp(ctty, handler->pid);
+		close(ctty);
+		if (ret) {
+			SYSERROR("failed to set terminal foreground process group");
+			goto out_delete_net;
+		}
+		DEBUG("set terminal foreground process group");
+	}
+	
 	/* Tell the child to continue its initialization and wait for
 	 * it to exec or return an error
 	 */
-- 
1.6.5