summaryrefslogtreecommitdiffstats
path: root/tools/build/feature/test-bpf.c
diff options
context:
space:
mode:
Diffstat (limited to 'tools/build/feature/test-bpf.c')
-rw-r--r--tools/build/feature/test-bpf.c42
1 files changed, 42 insertions, 0 deletions
diff --git a/tools/build/feature/test-bpf.c b/tools/build/feature/test-bpf.c
new file mode 100644
index 000000000..82070eadf
--- /dev/null
+++ b/tools/build/feature/test-bpf.c
@@ -0,0 +1,42 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <asm/unistd.h>
+#include <linux/bpf.h>
+#include <unistd.h>
+
+#ifndef __NR_bpf
+# if defined(__i386__)
+# define __NR_bpf 357
+# elif defined(__x86_64__)
+# define __NR_bpf 321
+# elif defined(__aarch64__)
+# define __NR_bpf 280
+# elif defined(__sparc__)
+# define __NR_bpf 349
+# elif defined(__s390__)
+# define __NR_bpf 351
+# else
+# error __NR_bpf not defined. libbpf does not support your arch.
+# endif
+#endif
+
+int main(void)
+{
+ union bpf_attr attr;
+
+ /* Check fields in attr */
+ attr.prog_type = BPF_PROG_TYPE_KPROBE;
+ attr.insn_cnt = 0;
+ attr.insns = 0;
+ attr.license = 0;
+ attr.log_buf = 0;
+ attr.log_size = 0;
+ attr.log_level = 0;
+ attr.kern_version = 0;
+ attr.prog_flags = 0;
+
+ /*
+ * Test existence of __NR_bpf and BPF_PROG_LOAD.
+ * This call should fail if we run the testcase.
+ */
+ return syscall(__NR_bpf, BPF_PROG_LOAD, &attr, sizeof(attr));
+}