1 files changed, 37 insertions, 0 deletions
diff --git a/src/udev/fuzz-udev-rules.c b/src/udev/fuzz-udev-rules.c
new file mode 100644
index 0000000..255d5df
--- /dev/null
+++ b/src/udev/fuzz-udev-rules.c
@@ -0,0 +1,37 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include <stdio.h>
+
+#include "fd-util.h"
+#include "fs-util.h"
+#include "fuzz.h"
+#include "tests.h"
+#include "tmpfile-util.h"
+#include "udev-rules.h"
+
+int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
+        _cleanup_(udev_rules_freep) UdevRules *rules = NULL;
+        _cleanup_fclose_ FILE *f = NULL;
+        _cleanup_(unlink_tempfilep) char filename[] = "/tmp/fuzz-udev-rules.XXXXXX";
+        int r;
+
+        if (outside_size_range(size, 0, 65536))
+                return 0;
+
+        if (!getenv("SYSTEMD_LOG_LEVEL"))
+                log_set_max_level(LOG_CRIT);
+
+        assert_se(fmkostemp_safe(filename, "r+", &f) == 0);
+        if (size != 0)
+                assert_se(fwrite(data, size, 1, f) == 1);
+        fflush(f);
+
+        assert_se(rules = udev_rules_new(RESOLVE_NAME_EARLY));
+        r = udev_rules_parse_file(rules, filename);
+        log_info_errno(r, "Parsing %s: %m", filename);
+        assert_se(IN_SET(r,
+                         0,       /* OK */
+                         -ENOBUFS /* line length exceeded */));
+
+        return 0;
+}