Joe Lawrence 757bd10ff0
livepatch/klp-build: support patches that add/remove files ...
The klp-build script prepares a clean patch by populating two temporary
directories ('a' and 'b') with source files and diffing the result.
However, this process fails when a patch introduces a new source file,
as the script attempts to copy files that do not yet exist in the
original source tree. Likewise, it fails when a patch removes a source
file and the script attempts to copy a file that no longer exists.
Refactor the file-gathering logic to distinguish between original input
files and patched output files:
- Split get_patch_files() into get_patch_input_files() and
get_patch_output_files() to identify which files exist before and
after patch application.
- Filter out "/dev/null" from both to handle file creation/deletion.
- Update refresh_patch() to only copy existing input files to the 'a'
directory and the resulting output files to the 'b' directory.
Acked-by: Song Liu <song@kernel.org >
Signed-off-by: Joe Lawrence <joe.lawrence@redhat.com >
Link: https://patch.msgid.link/20260310203751.1479229-4-joe.lawrence@redhat.com
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org >
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