| # 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 |
| } |