rootfsdebugfiles.bbclass: add a optional parameter to choose file mode

This is in case that sometimes the copied target files might be
expected to have a desired mode, for instance, the ssh keys should not
be too open, otherwise the users will get a "Permission denied" error.

Signed-off-by: Ming Liu <peter.x.liu@external.atlascopco.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 6 insertions, 1 deletions

diff --git a/meta/classes/rootfsdebugfiles.bbclass b/meta/classes/rootfsdebugfiles.bbclass
index a558871e99..e2ba4e3647 100644
--- a/meta/classes/rootfsdebugfiles.bbclass
+++ b/meta/classes/rootfsdebugfiles.bbclass
@@ -15,6 +15,10 @@
 #    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 ${IMAGE_ROOTFS}/etc/dropbear/dropbear_rsa_host_key 0600;"
+#    in case they might be required to have a specific mode. (Shoundn't be too open, for example)
 #
 # Do not use for production images! It bypasses several
 # core build mechanisms (updating the image when one
@@ -27,10 +31,11 @@ ROOTFS_DEBUG_FILES[doc] = "Lists additional files or directories to be installed
 ROOTFS_POSTPROCESS_COMMAND += "rootfs_debug_files ;"
 rootfs_debug_files () {
    #!/bin/sh -e
-   echo "${ROOTFS_DEBUG_FILES}" | sed -e 's/;/\n/g' | while read source target; do
+   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
 }