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-rw-r--r--tools/testing/selftests/bpf/prog_tests/syscall.c55
1 files changed, 55 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/syscall.c b/tools/testing/selftests/bpf/prog_tests/syscall.c
new file mode 100644
index 000000000..f4d400011
--- /dev/null
+++ b/tools/testing/selftests/bpf/prog_tests/syscall.c
@@ -0,0 +1,55 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2021 Facebook */
+#include <test_progs.h>
+#include "syscall.skel.h"
+
+struct args {
+ __u64 log_buf;
+ __u32 log_size;
+ int max_entries;
+ int map_fd;
+ int prog_fd;
+ int btf_fd;
+};
+
+void test_syscall(void)
+{
+ static char verifier_log[8192];
+ struct args ctx = {
+ .max_entries = 1024,
+ .log_buf = (uintptr_t) verifier_log,
+ .log_size = sizeof(verifier_log),
+ };
+ LIBBPF_OPTS(bpf_test_run_opts, tattr,
+ .ctx_in = &ctx,
+ .ctx_size_in = sizeof(ctx),
+ );
+ struct syscall *skel = NULL;
+ __u64 key = 12, value = 0;
+ int err, prog_fd;
+
+ skel = syscall__open_and_load();
+ if (!ASSERT_OK_PTR(skel, "skel_load"))
+ goto cleanup;
+
+ prog_fd = bpf_program__fd(skel->progs.bpf_prog);
+ err = bpf_prog_test_run_opts(prog_fd, &tattr);
+ ASSERT_EQ(err, 0, "err");
+ ASSERT_EQ(tattr.retval, 1, "retval");
+ ASSERT_GT(ctx.map_fd, 0, "ctx.map_fd");
+ ASSERT_GT(ctx.prog_fd, 0, "ctx.prog_fd");
+ ASSERT_OK(memcmp(verifier_log, "processed", sizeof("processed") - 1),
+ "verifier_log");
+
+ err = bpf_map_lookup_elem(ctx.map_fd, &key, &value);
+ ASSERT_EQ(err, 0, "map_lookup");
+ ASSERT_EQ(value, 34, "map lookup value");
+cleanup:
+ syscall__destroy(skel);
+ if (ctx.prog_fd > 0)
+ close(ctx.prog_fd);
+ if (ctx.map_fd > 0)
+ close(ctx.map_fd);
+ if (ctx.btf_fd > 0)
+ close(ctx.btf_fd);
+}