Adding upstream version 2.39.3.upstream/2.39.3

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 35 insertions, 0 deletions

diff --git a/libmount/src/fuzz.c b/libmount/src/fuzz.c
new file mode 100644
index 0000000..2c84714
--- /dev/null
+++ b/libmount/src/fuzz.c
@@ -0,0 +1,35 @@
+#include "fuzz.h"
+#include "xalloc.h"
+#include "mountP.h"
+
+#include <stdlib.h>
+#include <stddef.h>
+#include <stdint.h>
+
+int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
+        struct libmnt_table *tb = NULL;
+        FILE *f = NULL;
+
+        if (size == 0)
+                return 0;
+
+        // 128Kb should be enough to trigger all the issues we're interested in
+        if (size > 131072)
+                return 0;
+
+        tb = mnt_new_table();
+        if (!tb)
+		err_oom();
+
+        f = fmemopen((char*) data, size, "re");
+        if (!f)
+		err(EXIT_FAILURE, "fmemopen() failed");
+
+        mnt_table_enable_comments(tb, TRUE);
+        (void) mnt_table_parse_stream(tb, f, "mountinfo");
+
+        mnt_unref_table(tb);
+        fclose(f);
+
+        return 0;
+}