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| -rw-r--r-- | meta/classes/rootfsdebugfiles.bbclass | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/meta/classes/rootfsdebugfiles.bbclass b/meta/classes/rootfsdebugfiles.bbclass new file mode 100644 index 0000000000..a558871e99 --- /dev/null +++ b/meta/classes/rootfsdebugfiles.bbclass @@ -0,0 +1,36 @@ +# 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 ${IMAGE_ROOTFS}/etc/dropbear/dropbear_rsa_host_key ;" +# 2. Boot the image once, copy the dropbear_rsa_host_key from +# the device into your build conf directory. +# +# Do not use for production images! It bypasses several +# core build mechanisms (updating the image when one +# of the files changes, license tracking in the image +# manifest, ...). + +ROOTFS_DEBUG_FILES ?= "" +ROOTFS_DEBUG_FILES[doc] = "Lists additional files or directories to be installed with 'cp -a' in the format 'source1 target1;source2 target2;...'" + +ROOTFS_POSTPROCESS_COMMAND += "rootfs_debug_files ;" +rootfs_debug_files () { + #!/bin/sh -e + echo "${ROOTFS_DEBUG_FILES}" | sed -e 's/;/\n/g' | while read source target; do + if [ -e "$source" ]; then + mkdir -p $(dirname $target) + cp -a $source $target + fi + done +} |