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authorArnaldo Carvalho de Melo <acme@redhat.com>2023-04-04 11:05:57 -0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2023-04-04 13:18:17 -0300
commit9e03608e93858620317d54bc88a9a0069bce003d (patch)
treeae65e7ee439c44b94375e897c086c0bb809337e9 /tools/build/feature
parent430635a0ef1ce958b7b4311f172694ece2c692b8 (diff)
tools build: Add a feature test for scandirat(), that is not implemented so far in musl and uclibc
We use it just when listing tracepoint events, and for root, so just emit a warning about it to get users to ask the library maintainers to implement it, as suggested in this systemd ticket: https://github.com/systemd/casync/issues/129 Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lore.kernel.org/lkml/ZCwv4z5Dh%2FdHUMG6@kernel.org/ Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/build/feature')
-rw-r--r--tools/build/feature/Makefile4
-rw-r--r--tools/build/feature/test-all.c5
-rw-r--r--tools/build/feature/test-scandirat.c13
3 files changed, 22 insertions, 0 deletions
diff --git a/tools/build/feature/Makefile b/tools/build/feature/Makefile
index 0a3b9281f8b0..0f0aa9b7d7b5 100644
--- a/tools/build/feature/Makefile
+++ b/tools/build/feature/Makefile
@@ -65,6 +65,7 @@ FILES= \
test-gettid.bin \
test-jvmti.bin \
test-jvmti-cmlr.bin \
+ test-scandirat.bin \
test-sched_getcpu.bin \
test-setns.bin \
test-libopencsd.bin \
@@ -129,6 +130,9 @@ $(OUTPUT)test-get_current_dir_name.bin:
$(OUTPUT)test-glibc.bin:
$(BUILD)
+$(OUTPUT)test-scandirat.bin:
+ $(BUILD)
+
$(OUTPUT)test-sched_getcpu.bin:
$(BUILD)
diff --git a/tools/build/feature/test-all.c b/tools/build/feature/test-all.c
index 957c02c7b163..6f4bf386a3b5 100644
--- a/tools/build/feature/test-all.c
+++ b/tools/build/feature/test-all.c
@@ -114,6 +114,10 @@
# include "test-pthread-barrier.c"
#undef main
+#define main main_test_scandirat
+# include "test-scandirat.c"
+#undef main
+
#define main main_test_sched_getcpu
# include "test-sched_getcpu.c"
#undef main
@@ -206,6 +210,7 @@ int main(int argc, char *argv[])
main_test_get_cpuid();
main_test_bpf();
main_test_libcrypto();
+ main_test_scandirat();
main_test_sched_getcpu();
main_test_sdt();
main_test_setns();
diff --git a/tools/build/feature/test-scandirat.c b/tools/build/feature/test-scandirat.c
new file mode 100644
index 000000000000..d7e19e1858a5
--- /dev/null
+++ b/tools/build/feature/test-scandirat.c
@@ -0,0 +1,13 @@
+// SPDX-License-Identifier: GPL-2.0
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE
+#endif
+#include <dirent.h>
+
+int main(void)
+{
+ // expects non-NULL, arg3 is 'restrict' so "pointers" have to be different
+ return scandirat(/*dirfd=*/ 0, /*dirp=*/ (void *)1, /*namelist=*/ (void *)2, /*filter=*/ (void *)3, /*compar=*/ (void *)4);
+}
+
+#undef _GNU_SOURCE