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Diffstat (limited to 'tools/testing/selftests/bpf/urandom_read.c')
-rw-r--r--tools/testing/selftests/bpf/urandom_read.c22
1 files changed, 22 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/urandom_read.c b/tools/testing/selftests/bpf/urandom_read.c
new file mode 100644
index 000000000000..4acfdebf36fa
--- /dev/null
+++ b/tools/testing/selftests/bpf/urandom_read.c
@@ -0,0 +1,22 @@
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <stdlib.h>
+
+#define BUF_SIZE 256
+int main(void)
+{
+ int fd = open("/dev/urandom", O_RDONLY);
+ int i;
+ char buf[BUF_SIZE];
+
+ if (fd < 0)
+ return 1;
+ for (i = 0; i < 4; ++i)
+ read(fd, buf, BUF_SIZE);
+
+ close(fd);
+ return 0;
+}