I don't know if I understand it right. Does it mean that as long as we don't do some strange redirections of standard IO in our initramfs, we don't need to add this option when switching root? So in most cases we don't need to reopen the stdio, right?
Unless your real root's /dev/console is the same file as your initramfs's /dev/console, you probably do. When your system boots, process 1 (and all its offspring, if there's no redirection) has fds 0, 1 and 2 pointing to your initramfs's /dev/console. That device will remain open as long as you don't close those fds. switch_root needs to reopen 0, 1 and 2 to your new /dev/console to be able to really clean up your initramfs. (The best solution is to stop using initramfs and boot directly on your real root filesystem, using a tmpfs to perform early operations that need writable space, and using pivot_root if you really need to change root filesystems. initramfs is a trap.) -- Laurent _______________________________________________ busybox mailing list [email protected] http://lists.busybox.net/mailman/listinfo/busybox
