USBDevice *usb_msd_init(const char *filename, BlockDriverState **pbs) { MSDState *s; BlockDriverState *bdrv; 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; } s = qemu_mallocz(sizeof(MSDState)); bdrv = bdrv_new("usb"); if (bdrv_open2(bdrv, filename, 0, drv) < 0) goto fail; s->bs = bdrv; *pbs = bdrv; s->dev.speed = USB_SPEED_FULL; s->dev.handle_packet = usb_generic_handle_packet; s->dev.handle_reset = usb_msd_handle_reset; s->dev.handle_control = usb_msd_handle_control; s->dev.handle_data = usb_msd_handle_data; s->dev.handle_destroy = usb_msd_handle_destroy; snprintf(s->dev.devname, sizeof(s->dev.devname), "QEMU USB MSD(%.16s)", filename); s->scsi_dev = scsi_disk_init(bdrv, 0, usb_msd_command_complete, s); usb_msd_handle_reset((USBDevice *)s); return (USBDevice *)s; fail: qemu_free(s); return NULL; }