[PATCH bpf-next v5 11/11] selftests/bpf: Tolerate missing files during install

Ricardo B. Marlière
2026-04-15T21:00:12Z

With partial builds, some TEST_GEN_FILES entries can be absent at install
time. rsync treats missing source arguments as fatal and aborts kselftest
installation.

Override INSTALL_SINGLE_RULE in selftests/bpf to use --ignore-missing-args,
while keeping the existing bpf-specific INSTALL_RULE extension logic. Also
add --ignore-missing-args to the TEST_INST_SUBDIRS rsync loop so that
subdirectories with no .bpf.o files (e.g. when a test runner flavor was
skipped) do not abort installation.

Note that the INSTALL_SINGLE_RULE override applies globally to all file
categories including static source files (TEST_PROGS, TEST_FILES). These
are version-controlled and should always be present, so the practical risk
is negligible.

Signed-off-by: Ricardo B. Marlière <rbm@suse.com>
---
tools/testing/selftests/bpf/Makefile | 17 ++++++++++++++---
1 file changed, 14 insertions(+), 3 deletions(-)

diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile
index 163552458327..1f4a8e1f7932 100644
--- a/tools/testing/selftests/bpf/Makefile
+++ b/tools/testing/selftests/bpf/Makefile
@@ -969,11 +969,22 @@ EXTRA_CLEAN := $(SCRATCH_DIR) $(HOST_SCRATCH_DIR) \
# Delete partially updated (corrupted) files on error
.DELETE_ON_ERROR:

+# When permissive, tell rsync to ignore missing source arguments so that
+# partial builds do not abort installation.
+ifneq ($(PERMISSIVE),)
+override define INSTALL_SINGLE_RULE
+ $(if $(INSTALL_LIST),@mkdir -p $(INSTALL_PATH))
+ $(if $(INSTALL_LIST),rsync -a --copy-unsafe-links --ignore-missing-args $(INSTALL_LIST) $(INSTALL_PATH)/)
+endef
+endif
+
DEFAULT_INSTALL_RULE := $(INSTALL_RULE)
override define INSTALL_RULE
$(DEFAULT_INSTALL_RULE)
- @for DIR in $(TEST_INST_SUBDIRS); do \
- mkdir -p $(INSTALL_PATH)/$$DIR; \
- rsync -a $(OUTPUT)/$$DIR/*.bpf.o $(INSTALL_PATH)/$$DIR;\
+ @for DIR in $(TEST_INST_SUBDIRS); do \
+ mkdir -p $(INSTALL_PATH)/$$DIR; \
+ rsync -a $(if $(PERMISSIVE),--ignore-missing-args) \
+ $(OUTPUT)/$$DIR/*.bpf.o \
+ $(INSTALL_PATH)/$$DIR; \
done
endef

--
2.53.0