Busybox init does not start /etc/init.d/rcS
I'm trying to build embedded system using buildroot. Everything seems to work. All modules are starting, the system is stable. The problem is that /etc/init.d/rcS does not start during initialization of the system. If I run it manually everything is OK. I have it in my inittab file.
# /etc/inittab
#
# Copyright (C) 2001 Erik Andersen <[email protected]>
#
# Note: BusyBox init doesn't support runlevels. The runlevels field is
# completely ignored by BusyBox init. If you want runlevels, use
# sysvinit.
#
# Format for each entry: <id>:<runlevels>:<action>:<process>
#
# id == tty to run on, or empty for /dev/console
# runlevels == ignored
# action == one of sysinit, respawn, askfirst, wait, and once
# process == program to run
# Startup the system
null::sysinit:/bin/mount -t proc proc /proc
null::sysinit:/bin/mount -o remount,rw /
null::sysinit:/bin/mkdir -p /dev/pts
null::sysinit:/bin/mkdir -p /dev/shm
null::sysinit:/bin/mount -a
null::sysinit:/bin/hostname -F /etc/hostname
# now run any rc scripts
::sysinit:/etc/init.d/rcS
# Put a getty on the serial port
ttyFIQ0::respawn:/sbin/getty -L -n ttyFIQ0 115200 vt100 # GENERIC_SERIAL
# Stuff to do for the 3-finger salute
::ctrlaltdel:/sbin/reboot
# Stuff to do before rebooting
null::shutdown:/etc/init.d/rcK
null::shutdown:/bin/umount -a -r
null::shutdown:/sbin/swapoff -a
Any idea what could be wrong?
Answer
- /bin/init needs to be on your filesystem.
- /bin/sh needs to be on your filesystem.
- /etc/init.d/rcS needs to be executable and have #!/bin/sh as its first line.