Adding upstream version 255.4.upstream/255.4

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 13 insertions, 0 deletions

diff --git a/src/shared/switch-root.h b/src/shared/switch-root.h
new file mode 100644
index 0000000..ba0d280
--- /dev/null
+++ b/src/shared/switch-root.h
@@ -0,0 +1,13 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
+
+#include <stdbool.h>
+
+typedef enum SwitchRootFlags {
+        SWITCH_ROOT_DESTROY_OLD_ROOT      = 1 << 0, /* rm -rf old root when switching – under the condition
+                                                     * that it is backed by non-persistent tmpfs/ramfs/… */
+        SWITCH_ROOT_DONT_SYNC             = 1 << 1, /* don't call sync() immediately before switching root */
+        SWITCH_ROOT_RECURSIVE_RUN         = 1 << 2, /* move /run/ with MS_REC from old to new root */
+} SwitchRootFlags;
+
+int switch_root(const char *new_root, const char *old_root_after, SwitchRootFlags flags);