Add a switch_root utility (like kconfig's utils/run_init.c, although not

actuall using any of that code).  This is needed because pivot_root doesn't
work right under initramfs.  (See the menuconfig help.)

1 files changed, 6 insertions, 0 deletions

diff --git a/include/usage.h b/include/usage.h
index bef6a4dd2..69c50b97b 100644
--- a/include/usage.h
+++ b/include/usage.h
@@ -2735,6 +2735,12 @@
         "Options:\n" \
         "\t-a\tStart swapping on all swap devices"
 
+#define switch_root_trivial_usage \
+        "NEW_ROOT NEW_INIT [ARGUMENTS_TO_INIT]"
+#define switch_root_full_usage \
+        "Use from PID 1 under initramfs to free initramfs, chroot to NEW_ROOT,\n" \
+        "and exec NEW_INIT.\n"
+
 #define sync_trivial_usage \
         ""
 #define sync_full_usage \