[PATCH] wic: bootimg-partition: Add directory copy support to bootimage creation

["Sven Bachmann" <dev@mcbachmann.de>]

Hi,

this patch allows to create directories inside the boot partition when using WIC. Without the patch
the build process will abort with an error when a recipe tries to not only copy files but to also
create a directory inside the boot partition.

Recipe content:

    inherit deploy
   
    do_deploy() {
        install -d ${DEPLOYDIR}/${BOOTFILES_DIR_NAME}/mydirectory
        touch ${DEPLOYDIR}/${BOOTFILES_DIR_NAME}/mydirectory/${PN}-${PV}.stamp
    }
   
    addtask deploy before do_build after do_install
    do_deploy[dirs] += "${DEPLOYDIR}/${BOOTFILES_DIR_NAME}/mydirectory"


The task do_image_wic will then complain (paths reduced and anonymized):

    | ERROR: _exec_cmd: install -m 0644 -D
/my/home/dir/yocto/rpi-build/tmp/deploy/images/raspberrypi4/bootfiles/mydirectory
/my/home/dir/yocot/rpi-build/tmp/work/raspberrypi4-poky-linux-gnueabi/my-image/1.0-r0/tmp-wic/boot.1/mydirectory
returned '1' instead of 0
    | output: install: omitting directory
'/my/home/dir/yocto/rpi-build/tmp/deploy/images/raspberrypi4/bootfiles/mydirectory'


As can be seen it uses "install -D" instead of creating the directory with "install -d". This patch
fixes this.

Best regards
  Sven



>From 360775581a573a62032155fc6968175125e9c1db Mon Sep 17 00:00:00 2001
From: Sven Bachmann <dev@mcbachmann.de>
Date: Tue, 25 Jan 2022 20:47:17 +0100
Subject: [PATCH 1/1] wic: bootimg-partition: add directory copy support to bootimage creation

Signed-off-by: Sven Bachmann <dev@mcbachmann.de>
---
 .../lib/wic/plugins/source/bootimg-partition.py    | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/scripts/lib/wic/plugins/source/bootimg-partition.py
b/scripts/lib/wic/plugins/source/bootimg-partition.py
index 5dbe2558d2..6348050bd5 100644
--- a/scripts/lib/wic/plugins/source/bootimg-partition.py
+++ b/scripts/lib/wic/plugins/source/bootimg-partition.py
@@ -184,9 +184,17 @@ class BootimgPartitionPlugin(SourcePlugin):
         for task in cls.install_task:
             src_path, dst_path = task
             logger.debug('Install %s as %s', src_path, dst_path)
-            install_cmd = "install -m 0644 -D %s %s" \
-                          % (os.path.join(kernel_dir, src_path),
-                             os.path.join(hdddir, dst_path))
+            if os.path.isfile(src_path):
+                install_cmd = "install -m 0644 -D %s %s" \
+                              % (os.path.join(kernel_dir, src_path),
+                                 os.path.join(hdddir, dst_path))
+            elif os.path.isdir:
+                install_cmd = "install -m 0755 -d %s" \
+                              % (os.path.join(hdddir, dst_path))
+            else:
+                logger.error("Path is neither file nor directory: %s", src_path)
+                raise WicError("Type of path unknown, exiting")
+
             exec_cmd(install_cmd)
 
         logger.debug('Prepare boot partition using rootfs in %s', hdddir)
-- 
2.34.1