1 files changed, 61 insertions, 0 deletions
diff --git a/misc/check_fuzzer.c b/misc/check_fuzzer.c
new file mode 100644
index 0000000..cee21bf
--- /dev/null
+++ b/misc/check_fuzzer.c
@@ -0,0 +1,61 @@
+/*
+ * Play with a file system image quickly to find UBSAN problems
+ *
+ * Run a file system through some of the libext2fs functions used by
+ * some fuzzer reports.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <time.h>
+#include <sys/types.h>
+#include <sys/time.h>
+
+#include <ext2fs/ext2_fs.h>
+#include <ext2fs/ext2fs.h>
+
+int main (int argc, char *argv[])
+{
+	errcode_t	retval = 0;
+	ext2_filsys	fs;
+	int		exit_status = 1;
+
+	initialize_ext2_error_table();
+
+	if (argc != 2) {
+		fprintf(stderr, "%s: Usage <device|filesystem>\n", argv[0]);
+		exit(1);
+	}
+
+	retval = ext2fs_open(argv[1], 0, 0, 0,
+			     unix_io_manager, &fs);
+	if (retval) {
+		com_err(argv[0], retval, "while trying to open '%s'",
+			argv[1]);
+		exit(1);
+	}
+
+	retval = ext2fs_read_inode_bitmap(fs);
+	if (retval) {
+		com_err(argv[0], retval, "while trying to read inode bitmaps");
+		goto errout;
+	}
+
+	retval = ext2fs_read_block_bitmap(fs);
+	if (retval) {
+		com_err(argv[0], retval, "while trying to read inode bitmaps");
+		goto errout;
+	}
+
+	retval = ext2fs_check_directory(fs, EXT2_ROOT_INO);
+	if (retval) {
+		com_err(argv[0], retval, "while trying to read inode bitmaps");
+		goto errout;
+	}
+	exit_status = 0;
+errout:
+	ext2fs_close(fs);
+	return exit_status;
+}