429     FILE *f;  in mbedtls_hmac_drbg_write_seed_file()  local
432     if ((f = fopen(path, "wb")) == NULL) {  in mbedtls_hmac_drbg_write_seed_file()
437     mbedtls_setbuf(f, NULL);  in mbedtls_hmac_drbg_write_seed_file()
443     if (fwrite(buf, 1, sizeof(buf), f) != sizeof(buf)) {  in mbedtls_hmac_drbg_write_seed_file()
451     fclose(f);  in mbedtls_hmac_drbg_write_seed_file()
460     FILE *f = NULL;  in mbedtls_hmac_drbg_update_seed_file()  local
465     if ((f = fopen(path, "rb")) == NULL) {  in mbedtls_hmac_drbg_update_seed_file()
470     mbedtls_setbuf(f, NULL);  in mbedtls_hmac_drbg_update_seed_file()
472     n = fread(buf, 1, sizeof(buf), f);  in mbedtls_hmac_drbg_update_seed_file()
473     if (fread(&c, 1, 1, f) != 0) {  in mbedtls_hmac_drbg_update_seed_file()
477     if (n == 0 || ferror(f)) {  in mbedtls_hmac_drbg_update_seed_file()
481     fclose(f);  in mbedtls_hmac_drbg_update_seed_file()
482     f = NULL;  in mbedtls_hmac_drbg_update_seed_file()
488     if (f != NULL) {  in mbedtls_hmac_drbg_update_seed_file()
489         fclose(f);  in mbedtls_hmac_drbg_update_seed_file()