diff --git a/linux-user/ioctls.h b/linux-user/ioctls.h
index 586c794..92f6177 100644
--- a/linux-user/ioctls.h
+++ b/linux-user/ioctls.h
@@ -131,6 +131,44 @@
      IOCTL(FS_IOC_GETFLAGS, IOC_R, MK_PTR(TYPE_INT))
      IOCTL(FS_IOC_SETFLAGS, IOC_W, MK_PTR(TYPE_INT))
 
+#ifdef CONFIG_USBFS
+  /* USB ioctls */
+  IOCTL(USBDEVFS_CONTROL, IOC_RW,
+        MK_PTR(MK_STRUCT(STRUCT_usbdevfs_ctrltransfer)))
+  IOCTL(USBDEVFS_BULK, IOC_RW,
+        MK_PTR(MK_STRUCT(STRUCT_usbdevfs_bulktransfer)))
+  IOCTL(USBDEVFS_RESETEP, IOC_W, MK_PTR(TYPE_INT))
+  IOCTL(USBDEVFS_SETINTERFACE, IOC_W,
+        MK_PTR(MK_STRUCT(STRUCT_usbdevfs_setinterface)))
+  IOCTL(USBDEVFS_SETCONFIGURATION, IOC_W, MK_PTR(TYPE_INT))
+  IOCTL(USBDEVFS_GETDRIVER, IOC_R,
+        MK_PTR(MK_STRUCT(STRUCT_usbdevfs_getdriver)))
+  IOCTL(USBDEVFS_DISCSIGNAL, IOC_W,
+        MK_PTR(MK_STRUCT(STRUCT_usbdevfs_disconnectsignal)))
+  IOCTL(USBDEVFS_CLAIMINTERFACE, IOC_W, MK_PTR(TYPE_INT))
+  IOCTL(USBDEVFS_RELEASEINTERFACE, IOC_W, MK_PTR(TYPE_INT))
+  IOCTL(USBDEVFS_CONNECTINFO, IOC_R,
+        MK_PTR(MK_STRUCT(STRUCT_usbdevfs_connectinfo)))
+  IOCTL(USBDEVFS_IOCTL, IOC_RW, MK_PTR(MK_STRUCT(STRUCT_usbdevfs_ioctl)))
+  IOCTL(USBDEVFS_HUB_PORTINFO, IOC_R,
+        MK_PTR(MK_STRUCT(STRUCT_usbdevfs_hub_portinfo)))
+  IOCTL(USBDEVFS_RESET, 0, TYPE_NULL)
+  IOCTL(USBDEVFS_CLEAR_HALT, IOC_W, MK_PTR(TYPE_INT))
+  IOCTL(USBDEVFS_DISCONNECT, 0, TYPE_NULL)
+  IOCTL(USBDEVFS_CONNECT, 0, TYPE_NULL)
+  IOCTL(USBDEVFS_CLAIM_PORT, IOC_W, MK_PTR(TYPE_INT))
+  IOCTL(USBDEVFS_RELEASE_PORT, IOC_W, MK_PTR(TYPE_INT))
+  IOCTL(USBDEVFS_GET_CAPABILITIES, IOC_R, MK_PTR(TYPE_INT))
+  IOCTL(USBDEVFS_DISCONNECT_CLAIM, IOC_W,
+        MK_PTR(MK_STRUCT(STRUCT_usbdevfs_disconnect_claim)))
+#ifdef USBDEVFS_DROP_PRIVILEGES
+  IOCTL(USBDEVFS_DROP_PRIVILEGES, IOC_W, MK_PTR(TYPE_INT))
+#endif
+#ifdef USBDEVFS_GET_SPEED
+  IOCTL(USBDEVFS_GET_SPEED, 0, TYPE_NULL)
+#endif
+#endif /* CONFIG_USBFS */
+
   IOCTL(SIOCATMARK, IOC_R, MK_PTR(TYPE_INT))
   IOCTL(SIOCGIFNAME, IOC_RW, MK_PTR(TYPE_INT))
   IOCTL(SIOCGIFFLAGS, IOC_W | IOC_R, MK_PTR(MK_STRUCT(STRUCT_short_ifreq)))
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index d2cc971..6eb20c1 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -94,6 +94,9 @@
 #include <linux/fiemap.h>
 #endif
 #include <linux/fb.h>
+#if defined(CONFIG_USBFS)
+#include <linux/usbdevice_fs.h>
+#endif
 #include <linux/vt.h>
 #include <linux/dm-ioctl.h>
 #include <linux/reboot.h>
diff --git a/linux-user/syscall_defs.h b/linux-user/syscall_defs.h
index 18d434d..2daa5eb 100644
--- a/linux-user/syscall_defs.h
+++ b/linux-user/syscall_defs.h
@@ -863,6 +863,30 @@
 
 #define TARGET_FS_IOC_FIEMAP TARGET_IOWR('f',11,struct fiemap)
 
+/* usb ioctls */
+#define TARGET_USBDEVFS_CONTROL TARGET_IOWRU('U', 0)
+#define TARGET_USBDEVFS_BULK TARGET_IOWRU('U', 2)
+#define TARGET_USBDEVFS_RESETEP TARGET_IORU('U', 3)
+#define TARGET_USBDEVFS_SETINTERFACE TARGET_IORU('U', 4)
+#define TARGET_USBDEVFS_SETCONFIGURATION TARGET_IORU('U',  5)
+#define TARGET_USBDEVFS_GETDRIVER TARGET_IOWU('U', 8)
+#define TARGET_USBDEVFS_DISCSIGNAL TARGET_IORU('U', 14)
+#define TARGET_USBDEVFS_CLAIMINTERFACE TARGET_IORU('U', 15)
+#define TARGET_USBDEVFS_RELEASEINTERFACE TARGET_IORU('U', 16)
+#define TARGET_USBDEVFS_CONNECTINFO TARGET_IOWU('U', 17)
+#define TARGET_USBDEVFS_IOCTL TARGET_IOWRU('U', 18)
+#define TARGET_USBDEVFS_HUB_PORTINFO TARGET_IORU('U', 19)
+#define TARGET_USBDEVFS_RESET TARGET_IO('U', 20)
+#define TARGET_USBDEVFS_CLEAR_HALT TARGET_IORU('U', 21)
+#define TARGET_USBDEVFS_DISCONNECT TARGET_IO('U', 22)
+#define TARGET_USBDEVFS_CONNECT TARGET_IO('U', 23)
+#define TARGET_USBDEVFS_CLAIM_PORT TARGET_IORU('U', 24)
+#define TARGET_USBDEVFS_RELEASE_PORT TARGET_IORU('U', 25)
+#define TARGET_USBDEVFS_GET_CAPABILITIES TARGET_IORU('U', 26)
+#define TARGET_USBDEVFS_DISCONNECT_CLAIM TARGET_IORU('U', 27)
+#define TARGET_USBDEVFS_DROP_PRIVILEGES TARGET_IOWU('U', 30)
+#define TARGET_USBDEVFS_GET_SPEED TARGET_IO('U', 31)
+
 /* cdrom commands */
 #define TARGET_CDROMPAUSE		0x5301 /* Pause Audio Operation */
 #define TARGET_CDROMRESUME		0x5302 /* Resume paused Audio Operation */
diff --git a/linux-user/syscall_types.h b/linux-user/syscall_types.h
index 24631b0..6f64a8b 100644
--- a/linux-user/syscall_types.h
+++ b/linux-user/syscall_types.h
@@ -266,3 +266,51 @@
        TYPE_INT, /* flags */
        TYPE_INT, /* datalen */
        TYPE_PTRVOID) /* data */
+
+#if defined(CONFIG_USBFS)
+/* usb device ioctls */
+STRUCT(usbdevfs_ctrltransfer,
+        TYPE_CHAR, /* bRequestType */
+        TYPE_CHAR, /* bRequest */
+        TYPE_SHORT, /* wValue */
+        TYPE_SHORT, /* wIndex */
+        TYPE_SHORT, /* wLength */
+        TYPE_INT, /* timeout */
+        TYPE_PTRVOID) /* data */
+
+STRUCT(usbdevfs_bulktransfer,
+        TYPE_INT, /* ep */
+        TYPE_INT, /* len */
+        TYPE_INT, /* timeout */
+        TYPE_PTRVOID) /* data */
+
+STRUCT(usbdevfs_setinterface,
+        TYPE_INT, /* interface */
+        TYPE_INT) /* altsetting */
+
+STRUCT(usbdevfs_disconnectsignal,
+        TYPE_INT, /* signr */
+        TYPE_PTRVOID) /* context */
+
+STRUCT(usbdevfs_getdriver,
+        TYPE_INT, /* interface */
+        MK_ARRAY(TYPE_CHAR, USBDEVFS_MAXDRIVERNAME + 1)) /* driver */
+
+STRUCT(usbdevfs_connectinfo,
+        TYPE_INT, /* devnum */
+        TYPE_CHAR) /* slow */
+
+STRUCT(usbdevfs_ioctl,
+        TYPE_INT, /* ifno */
+        TYPE_INT, /* ioctl_code */
+        TYPE_PTRVOID) /* data */
+
+STRUCT(usbdevfs_hub_portinfo,
+        TYPE_CHAR, /* nports */
+        MK_ARRAY(TYPE_CHAR, 127)) /* port */
+
+STRUCT(usbdevfs_disconnect_claim,
+        TYPE_INT, /* interface */
+        TYPE_INT, /* flags */
+        MK_ARRAY(TYPE_CHAR, USBDEVFS_MAXDRIVERNAME + 1)) /* driver */
+#endif /* CONFIG_USBFS */