1 files changed, 27 insertions, 0 deletions
diff --git a/bpf_dbg.c b/bpf_dbg.c
new file mode 100644
index 0000000..2f109b1
--- /dev/null
+++ b/bpf_dbg.c
@@ -0,0 +1,27 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <linux/filter.h>
+#include <unistd.h>
+
+#include "disasm.h"
+
+int main(int argc, char **argv)
+{
+	struct sock_filter *filter;
+	size_t fd, n;
+
+	if (argc < 2) {
+		perror("missing input file");
+		exit(EXIT_FAILURE);
+	}
+	filter = calloc(SIZE_FILTER, sizeof(struct sock_filter));
+	fd = open(argv[1], O_CLOEXEC | O_RDONLY);
+
+	n = read(fd, filter, sizeof(struct sock_filter) * SIZE_FILTER);
+	close(fd);
+	printf("Read %ld entries\n", n / sizeof(struct sock_filter));
+	bpf_disasm_all(filter, n / sizeof(struct sock_filter));
+	free(filter);
+	return 0;
+}