Archipelago » qemu

    BlockDriver *drv = NULL;

    const char *p1;

    char fmt[32];

    p1 = strchr(filename, ':');

    if (p1++) {

        const char *p2;

        if (strstart(filename, "format=", &p2)) {

            int len = MIN(p1 - p2, sizeof(fmt));

            pstrcpy(fmt, len, p2);

            drv = bdrv_find_format(fmt);

            if (!drv) {

                printf("invalid format %s\n", fmt);

                return NULL;

            }

        } else if (*filename != ':') {

            printf("unrecognized USB mass-storage option %s\n", filename);

            return NULL;

        }

        filename = p1;

    }

    if (!*filename) {

        printf("block device specification needed\n");

        return NULL;

    }

    if (bdrv_open2(bdrv, filename, 0, drv) < 0)