selftests: Keep symlinks, when possible

When kselftest is built/installed with the 'gen_tar' target, rsync is
used for the installation step to copy files. Extra care is needed for
tests that have symlinks. Commit ae108c48b5d2 ("selftests: net: Fix
cross-tree inclusion of scripts") added '-L' (transform symlink into
referent file/dir) to rsync, to fix dangling links. However, that
broke some tests where the symlink (being a symlink) is part of the
test (e.g. exec:execveat).

Use rsync's '--copy-unsafe-links' that does right thing.

Fixes: ae108c48b5d2 ("selftests: net: Fix cross-tree inclusion of scripts")
Signed-off-by: Björn Töpel <bjorn@rivosinc.com>
Reviewed-by: Benjamin Poirier <bpoirier@nvidia.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>

diff --git a/tools/testing/selftests/lib.mk b/tools/testing/selftests/lib.mk
index d17854285f2b64c1a7ed52a30e2ba9bff5f4d0da..118e0964bda9468364e38c08e18a2b1f84de4b10 100644 (file)
--- a/tools/testing/selftests/lib.mk
+++ b/tools/testing/selftests/lib.mk
@@ -106,7 +106,7 @@ endef
 run_tests: all
 ifdef building_out_of_srctree
        @if [ "X$(TEST_PROGS)$(TEST_PROGS_EXTENDED)$(TEST_FILES)" != "X" ]; then \
-               rsync -aLq $(TEST_PROGS) $(TEST_PROGS_EXTENDED) $(TEST_FILES) $(OUTPUT); \
+               rsync -aq --copy-unsafe-links $(TEST_PROGS) $(TEST_PROGS_EXTENDED) $(TEST_FILES) $(OUTPUT); \
        fi
        @if [ "X$(TEST_PROGS)" != "X" ]; then \
                $(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) \
@@ -120,7 +120,7 @@ endif
 
 define INSTALL_SINGLE_RULE
        $(if $(INSTALL_LIST),@mkdir -p $(INSTALL_PATH))
-       $(if $(INSTALL_LIST),rsync -aL $(INSTALL_LIST) $(INSTALL_PATH)/)
+       $(if $(INSTALL_LIST),rsync -a --copy-unsafe-links $(INSTALL_LIST) $(INSTALL_PATH)/)
 endef
 
 define INSTALL_RULE