1 files changed, 38 insertions, 0 deletions

diff --git a/tools/testing/selftests/efivarfs/create-read.c b/tools/testing/selftests/efivarfs/create-read.c
new file mode 100644
index 000000000000..7feef1880968
--- /dev/null
+++ b/tools/testing/selftests/efivarfs/create-read.c
@@ -0,0 +1,38 @@
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <string.h>
+
+int main(int argc, char **argv)
+{
+        const char *path;
+        char buf[4];
+        int fd, rc;
+
+        if (argc < 2) {
+                fprintf(stderr, "usage: %s <path>\n", argv[0]);
+                return EXIT_FAILURE;
+        }
+
+        path = argv[1];
+
+        /* create a test variable */
+        fd = open(path, O_RDWR | O_CREAT, 0600);
+        if (fd < 0) {
+                perror("open(O_WRONLY)");
+                return EXIT_FAILURE;
+        }
+
+        rc = read(fd, buf, sizeof(buf));
+        if (rc != 0) {
+                fprintf(stderr, "Reading a new var should return EOF\n");
+                return EXIT_FAILURE;
+        }
+
+        return EXIT_SUCCESS;
+}