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- # This class installs additional files found on the build host
- # directly into the rootfs.
- #
- # One use case is to install a constant ssh host key in
- # an image that gets created for just one machine. This
- # solves two issues:
- # - host key generation on the device can stall when the
- # kernel has not gathered enough entropy yet (seen in practice
- # under qemu)
- # - ssh complains by default when the host key changes
- #
- # For dropbear, with the ssh host key store along side the local.conf:
- # 1. Extend local.conf:
- # INHERIT += "rootfsdebugfiles"
- # ROOTFS_DEBUG_FILES += "${TOPDIR}/conf/dropbear_rsa_host_key ${IMAGE_ROOTFS}/etc/dropbear/dropbear_rsa_host_key ;"
- # 2. Boot the image once, copy the dropbear_rsa_host_key from
- # the device into your build conf directory.
- # 3. A optional parameter can be used to set file mode
- # of the copied target, for instance:
- # ROOTFS_DEBUG_FILES += "${TOPDIR}/conf/dropbear_rsa_host_key ${IMAGE_ROOTFS}/etc/dropbear/dropbear_rsa_host_key 0600;"
- # in case they might be required to have a specific mode. (Shoundn't be too open, for example)
- #
- # Do not use for production images! It bypasses several
- # core build mechanisms (updating the image when one
- # of the files changes, license tracking in the image
- # manifest, ...).
- ROOTFS_DEBUG_FILES ?= ""
- ROOTFS_DEBUG_FILES[doc] = "Lists additional files or directories to be installed with 'cp -a' in the format 'source1 target1;source2 target2;...'"
- ROOTFS_POSTPROCESS_COMMAND += "rootfs_debug_files;"
- rootfs_debug_files () {
- #!/bin/sh -e
- echo "${ROOTFS_DEBUG_FILES}" | sed -e 's/;/\n/g' | while read source target mode; do
- if [ -e "$source" ]; then
- mkdir -p $(dirname $target)
- cp -a $source $target
- [ -n "$mode" ] && chmod $mode $target
- fi
- done
- }
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