-void sha256_init(struct sha256_ctx *);
-void sha256_update(struct sha256_ctx *, const uint8_t *, unsigned int);
+void fio_sha256_init(struct fio_sha256_ctx *);
+void fio_sha256_update(struct fio_sha256_ctx *, const uint8_t *, unsigned int);
+void fio_sha256_final(struct fio_sha256_ctx *);