From 26ea5533c941baee14923dfc3edfb9c91666d245 Mon Sep 17 00:00:00 2001 From: Christian Brauner Date: Mon, 14 Dec 2020 17:52:44 +0100 Subject: [PATCH] conf: fix block-device based rootfs mounting Fixes: #3598 Cc: stable-4.0 Signed-off-by: Christian Brauner --- src/lxc/conf.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git src/lxc/conf.c src/lxc/conf.c index 9f631e0c23..27f9706687 100644 --- src/lxc/conf.c +++ src/lxc/conf.c @@ -3135,6 +3135,10 @@ int lxc_setup_rootfs_prepare_root(struct lxc_conf *conf, const char *name, if (ret < 0) return log_error(-1, "Failed to bind mount container / onto itself"); + conf->rootfs.mntpt_fd = openat(-EBADF, path, O_RDONLY | O_CLOEXEC | O_DIRECTORY | O_PATH | O_NOCTTY); + if (conf->rootfs.mntpt_fd < 0) + return log_error_errno(-errno, errno, "Failed to open file descriptor for container rootfs"); + return log_trace(0, "Bind mounted container / onto itself"); }