[lxc-devel] [PATCH] Clear environment for container

[Serge Hallyn]

Clear env before starting a container.  Do it right before setting
the container=lxc variable.

Signed-off-by: Serge Hallyn <serge.hallyn at ubuntu.com>
---
 src/lxc/lxc_start.c    | 4 ++++
 src/lxc/lxccontainer.c | 5 +++++
 2 files changed, 9 insertions(+)

diff --git a/src/lxc/lxc_start.c b/src/lxc/lxc_start.c
index cedd908..fb756dd 100644
--- a/src/lxc/lxc_start.c
+++ b/src/lxc/lxc_start.c
@@ -130,6 +130,10 @@ int main(int argc, char *argv[])
 			 my_args.progname, my_args.quiet))
 		return err;
 
+	if (clearenv()) {
+		SYSERROR("failed to clear environment");
+		/* don't error out though */
+	}
 	if (putenv("container=lxc")) {
 		SYSERROR("failed to set environment variable");
 		return err;
diff --git a/src/lxc/lxccontainer.c b/src/lxc/lxccontainer.c
index fd77aac..5919d2c 100644
--- a/src/lxc/lxccontainer.c
+++ b/src/lxc/lxccontainer.c
@@ -364,6 +364,11 @@ static bool lxcapi_start(struct lxc_container *c, int useinit, char * const argv
 		setsid();
 	}
 
+	if (clearenv()) {
+		SYSERROR("failed to clear environment");
+		/* don't error out though */
+	}
+
 	if (putenv("container=lxc")) {
 		fprintf(stderr, "failed to set environment variable");
 		if (daemonize) {
-- 
1.8.0