Initial file dump from open source releaseHEADmaster

9 files changed, 2047 insertions, 0 deletions

diff --git a/drivers/staging/usbip/userspace/libsrc/Makefile.am b/drivers/staging/usbip/userspace/libsrc/Makefile.am
new file mode 100644
index 00000000..4921189e
--- /dev/null
+++ b/drivers/staging/usbip/userspace/libsrc/Makefile.am
@@ -0,0 +1,7 @@
+libusbip_la_CPPFLAGS = -DUSBIDS_FILE='"@USBIDS_DIR@/usb.ids"'
+libusbip_la_CFLAGS   = @EXTRA_CFLAGS@
+libusbip_la_LDFLAGS  = -version-info @LIBUSBIP_VERSION@
+
+lib_LTLIBRARIES := libusbip.la
+libusbip_la_SOURCES := names.c names.h usbip_host_driver.c usbip_host_driver.h \
+		       usbip_common.c usbip_common.h vhci_driver.c vhci_driver.h
diff --git a/drivers/staging/usbip/userspace/libsrc/names.c b/drivers/staging/usbip/userspace/libsrc/names.c
new file mode 100644
index 00000000..3c8d28b7
--- /dev/null
+++ b/drivers/staging/usbip/userspace/libsrc/names.c
@@ -0,0 +1,504 @@
+/*
+ *      names.c  --  USB name database manipulation routines
+ *
+ *      Copyright (C) 1999, 2000  Thomas Sailer (sailer@ife.ee.ethz.ch)
+ *
+ *      This program is free software; you can redistribute it and/or modify
+ *      it under the terms of the GNU General Public License as published by
+ *      the Free Software Foundation; either version 2 of the License, or
+ *      (at your option) any later version.
+ *
+ *      This program is distributed in the hope that it will be useful,
+ *      but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *      GNU General Public License for more details.
+ *
+ *      You should have received a copy of the GNU General Public License
+ *      along with this program; if not, write to the Free Software
+ *      Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ *
+ *
+ *
+ *
+ *	Copyright (C) 2005 Takahiro Hirofuchi
+ *		- names_deinit() is added.
+ *
+ */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <dirent.h>
+#include <string.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <ctype.h>
+
+#include "names.h"
+#include "usbip_common.h"
+
+struct vendor {
+	struct vendor *next;
+	u_int16_t vendorid;
+	char name[1];
+};
+
+struct product {
+	struct product *next;
+	u_int16_t vendorid, productid;
+	char name[1];
+};
+
+struct class {
+	struct class *next;
+	u_int8_t classid;
+	char name[1];
+};
+
+struct subclass {
+	struct subclass *next;
+	u_int8_t classid, subclassid;
+	char name[1];
+};
+
+struct protocol {
+	struct protocol *next;
+	u_int8_t classid, subclassid, protocolid;
+	char name[1];
+};
+
+struct genericstrtable {
+	struct genericstrtable *next;
+	unsigned int num;
+	char name[1];
+};
+
+
+#define HASH1  0x10
+#define HASH2  0x02
+#define HASHSZ 16
+
+static unsigned int hashnum(unsigned int num)
+{
+	unsigned int mask1 = HASH1 << 27, mask2 = HASH2 << 27;
+
+	for (; mask1 >= HASH1; mask1 >>= 1, mask2 >>= 1)
+		if (num & mask1)
+			num ^= mask2;
+	return num & (HASHSZ-1);
+}
+
+
+static struct vendor *vendors[HASHSZ] = { NULL, };
+static struct product *products[HASHSZ] = { NULL, };
+static struct class *classes[HASHSZ] = { NULL, };
+static struct subclass *subclasses[HASHSZ] = { NULL, };
+static struct protocol *protocols[HASHSZ] = { NULL, };
+
+const char *names_vendor(u_int16_t vendorid)
+{
+	struct vendor *v;
+
+	v = vendors[hashnum(vendorid)];
+	for (; v; v = v->next)
+		if (v->vendorid == vendorid)
+			return v->name;
+	return NULL;
+}
+
+const char *names_product(u_int16_t vendorid, u_int16_t productid)
+{
+	struct product *p;
+
+	p = products[hashnum((vendorid << 16) | productid)];
+	for (; p; p = p->next)
+		if (p->vendorid == vendorid && p->productid == productid)
+			return p->name;
+	return NULL;
+}
+
+const char *names_class(u_int8_t classid)
+{
+	struct class *c;
+
+	c = classes[hashnum(classid)];
+	for (; c; c = c->next)
+		if (c->classid == classid)
+			return c->name;
+	return NULL;
+}
+
+const char *names_subclass(u_int8_t classid, u_int8_t subclassid)
+{
+	struct subclass *s;
+
+	s = subclasses[hashnum((classid << 8) | subclassid)];
+	for (; s; s = s->next)
+		if (s->classid == classid && s->subclassid == subclassid)
+			return s->name;
+	return NULL;
+}
+
+const char *names_protocol(u_int8_t classid, u_int8_t subclassid,
+			   u_int8_t protocolid)
+{
+	struct protocol *p;
+
+	p = protocols[hashnum((classid << 16) | (subclassid << 8)
+			      | protocolid)];
+	for (; p; p = p->next)
+		if (p->classid == classid && p->subclassid == subclassid &&
+		    p->protocolid == protocolid)
+			return p->name;
+	return NULL;
+}
+
+/* add a cleanup function by takahiro */
+struct pool {
+	struct pool *next;
+	void *mem;
+};
+
+static struct pool *pool_head;
+
+static void *my_malloc(size_t size)
+{
+	struct pool *p;
+
+	p = calloc(1, sizeof(struct pool));
+	if (!p) {
+		free(p);
+		return NULL;
+	}
+
+	p->mem = calloc(1, size);
+	if (!p->mem)
+		return NULL;
+
+	p->next = pool_head;
+	pool_head = p;
+
+	return p->mem;
+}
+
+void names_free(void)
+{
+	struct pool *pool;
+
+	if (!pool_head)
+		return;
+
+	for (pool = pool_head; pool != NULL; ) {
+		struct pool *tmp;
+
+		if (pool->mem)
+			free(pool->mem);
+
+		tmp = pool;
+		pool = pool->next;
+		free(tmp);
+	}
+}
+
+static int new_vendor(const char *name, u_int16_t vendorid)
+{
+	struct vendor *v;
+	unsigned int h = hashnum(vendorid);
+
+	v = vendors[h];
+	for (; v; v = v->next)
+		if (v->vendorid == vendorid)
+			return -1;
+	v = my_malloc(sizeof(struct vendor) + strlen(name));
+	if (!v)
+		return -1;
+	strcpy(v->name, name);
+	v->vendorid = vendorid;
+	v->next = vendors[h];
+	vendors[h] = v;
+	return 0;
+}
+
+static int new_product(const char *name, u_int16_t vendorid,
+		       u_int16_t productid)
+{
+	struct product *p;
+	unsigned int h = hashnum((vendorid << 16) | productid);
+
+	p = products[h];
+	for (; p; p = p->next)
+		if (p->vendorid == vendorid && p->productid == productid)
+			return -1;
+	p = my_malloc(sizeof(struct product) + strlen(name));
+	if (!p)
+		return -1;
+	strcpy(p->name, name);
+	p->vendorid = vendorid;
+	p->productid = productid;
+	p->next = products[h];
+	products[h] = p;
+	return 0;
+}
+
+static int new_class(const char *name, u_int8_t classid)
+{
+	struct class *c;
+	unsigned int h = hashnum(classid);
+
+	c = classes[h];
+	for (; c; c = c->next)
+		if (c->classid == classid)
+			return -1;
+	c = my_malloc(sizeof(struct class) + strlen(name));
+	if (!c)
+		return -1;
+	strcpy(c->name, name);
+	c->classid = classid;
+	c->next = classes[h];
+	classes[h] = c;
+	return 0;
+}
+
+static int new_subclass(const char *name, u_int8_t classid, u_int8_t subclassid)
+{
+	struct subclass *s;
+	unsigned int h = hashnum((classid << 8) | subclassid);
+
+	s = subclasses[h];
+	for (; s; s = s->next)
+		if (s->classid == classid && s->subclassid == subclassid)
+			return -1;
+	s = my_malloc(sizeof(struct subclass) + strlen(name));
+	if (!s)
+		return -1;
+	strcpy(s->name, name);
+	s->classid = classid;
+	s->subclassid = subclassid;
+	s->next = subclasses[h];
+	subclasses[h] = s;
+	return 0;
+}
+
+static int new_protocol(const char *name, u_int8_t classid, u_int8_t subclassid,
+			u_int8_t protocolid)
+{
+	struct protocol *p;
+	unsigned int h = hashnum((classid << 16) | (subclassid << 8)
+				 | protocolid);
+
+	p = protocols[h];
+	for (; p; p = p->next)
+		if (p->classid == classid && p->subclassid == subclassid
+		    && p->protocolid == protocolid)
+			return -1;
+	p = my_malloc(sizeof(struct protocol) + strlen(name));
+	if (!p)
+		return -1;
+	strcpy(p->name, name);
+	p->classid = classid;
+	p->subclassid = subclassid;
+	p->protocolid = protocolid;
+	p->next = protocols[h];
+	protocols[h] = p;
+	return 0;
+}
+
+static void parse(FILE *f)
+{
+	char buf[512], *cp;
+	unsigned int linectr = 0;
+	int lastvendor = -1;
+	int lastclass = -1;
+	int lastsubclass = -1;
+	int lasthut = -1;
+	int lastlang = -1;
+	unsigned int u;
+
+	while (fgets(buf, sizeof(buf), f)) {
+		linectr++;
+		/* remove line ends */
+		cp = strchr(buf, '\r');
+		if (cp)
+			*cp = 0;
+		cp = strchr(buf, '\n');
+		if (cp)
+			*cp = 0;
+		if (buf[0] == '#' || !buf[0])
+			continue;
+		cp = buf;
+		if (buf[0] == 'P' && buf[1] == 'H' && buf[2] == 'Y' &&
+		    buf[3] == 'S' && buf[4] == 'D' &&
+		    buf[5] == 'E' && buf[6] == 'S' && /*isspace(buf[7])*/
+		    buf[7] == ' ') {
+			continue;
+		}
+		if (buf[0] == 'P' && buf[1] == 'H' &&
+		    buf[2] == 'Y' && /*isspace(buf[3])*/ buf[3] == ' ') {
+			continue;
+		}
+		if (buf[0] == 'B' && buf[1] == 'I' && buf[2] == 'A' &&
+		    buf[3] == 'S' && /*isspace(buf[4])*/ buf[4] == ' ') {
+			continue;
+		}
+		if (buf[0] == 'L' && /*isspace(buf[1])*/ buf[1] == ' ') {
+			lasthut = lastclass = lastvendor = lastsubclass = -1;
+			/*
+			 * set 1 as pseudo-id to indicate that the parser is
+			 * in a `L' section.
+			 */
+			lastlang = 1;
+			continue;
+		}
+		if (buf[0] == 'C' && /*isspace(buf[1])*/ buf[1] == ' ') {
+			/* class spec */
+			cp = buf+2;
+			while (isspace(*cp))
+				cp++;
+			if (!isxdigit(*cp)) {
+				err("Invalid class spec at line %u", linectr);
+				continue;
+			}
+			u = strtoul(cp, &cp, 16);
+			while (isspace(*cp))
+				cp++;
+			if (!*cp) {
+				err("Invalid class spec at line %u", linectr);
+				continue;
+			}
+			if (new_class(cp, u))
+				err("Duplicate class spec at line %u class %04x %s",
+				    linectr, u, cp);
+			dbg("line %5u class %02x %s", linectr, u, cp);
+			lasthut = lastlang = lastvendor = lastsubclass = -1;
+			lastclass = u;
+			continue;
+		}
+		if (buf[0] == 'A' && buf[1] == 'T' && isspace(buf[2])) {
+			/* audio terminal type spec */
+			continue;
+		}
+		if (buf[0] == 'H' && buf[1] == 'C' && buf[2] == 'C'
+		    && isspace(buf[3])) {
+			/* HID Descriptor bCountryCode */
+			continue;
+		}
+		if (isxdigit(*cp)) {
+			/* vendor */
+			u = strtoul(cp, &cp, 16);
+			while (isspace(*cp))
+				cp++;
+			if (!*cp) {
+				err("Invalid vendor spec at line %u", linectr);
+				continue;
+			}
+			if (new_vendor(cp, u))
+				err("Duplicate vendor spec at line %u vendor %04x %s",
+				    linectr, u, cp);
+			dbg("line %5u vendor %04x %s", linectr, u, cp);
+			lastvendor = u;
+			lasthut = lastlang = lastclass = lastsubclass = -1;
+			continue;
+		}
+		if (buf[0] == '\t' && isxdigit(buf[1])) {
+			/* product or subclass spec */
+			u = strtoul(buf+1, &cp, 16);
+			while (isspace(*cp))
+				cp++;
+			if (!*cp) {
+				err("Invalid product/subclass spec at line %u",
+				    linectr);
+				continue;
+			}
+			if (lastvendor != -1) {
+				if (new_product(cp, lastvendor, u))
+					err("Duplicate product spec at line %u product %04x:%04x %s",
+					    linectr, lastvendor, u, cp);
+				dbg("line %5u product %04x:%04x %s", linectr,
+				    lastvendor, u, cp);
+				continue;
+			}
+			if (lastclass != -1) {
+				if (new_subclass(cp, lastclass, u))
+					err("Duplicate subclass spec at line %u class %02x:%02x %s",
+					    linectr, lastclass, u, cp);
+				dbg("line %5u subclass %02x:%02x %s", linectr,
+				    lastclass, u, cp);
+				lastsubclass = u;
+				continue;
+			}
+			if (lasthut != -1) {
+				/* do not store hut */
+				continue;
+			}
+			if (lastlang != -1) {
+				/* do not store langid */
+				continue;
+			}
+			err("Product/Subclass spec without prior Vendor/Class spec at line %u",
+			    linectr);
+			continue;
+		}
+		if (buf[0] == '\t' && buf[1] == '\t' && isxdigit(buf[2])) {
+			/* protocol spec */
+			u = strtoul(buf+2, &cp, 16);
+			while (isspace(*cp))
+				cp++;
+			if (!*cp) {
+				err("Invalid protocol spec at line %u",
+				    linectr);
+				continue;
+			}
+			if (lastclass != -1 && lastsubclass != -1) {
+				if (new_protocol(cp, lastclass, lastsubclass,
+						 u))
+					err("Duplicate protocol spec at line %u class %02x:%02x:%02x %s",
+					    linectr, lastclass, lastsubclass,
+					    u, cp);
+				dbg("line %5u protocol %02x:%02x:%02x %s",
+				    linectr, lastclass, lastsubclass, u, cp);
+				continue;
+			}
+			err("Protocol spec without prior Class and Subclass spec at line %u",
+			    linectr);
+			continue;
+		}
+		if (buf[0] == 'H' && buf[1] == 'I' &&
+		    buf[2] == 'D' && /*isspace(buf[3])*/ buf[3] == ' ') {
+			continue;
+		}
+		if (buf[0] == 'H' && buf[1] == 'U' &&
+		    buf[2] == 'T' && /*isspace(buf[3])*/ buf[3] == ' ') {
+			lastlang = lastclass = lastvendor = lastsubclass = -1;
+			/*
+			 * set 1 as pseudo-id to indicate that the parser is
+			 * in a `HUT' section.
+			 */
+			lasthut = 1;
+			continue;
+		}
+		if (buf[0] == 'R' && buf[1] == ' ')
+			continue;
+
+		if (buf[0] == 'V' && buf[1] == 'T')
+			continue;
+
+		err("Unknown line at line %u", linectr);
+	}
+}
+
+
+int names_init(char *n)
+{
+	FILE *f;
+
+	f = fopen(n, "r");
+	if (!f)
+		return errno;
+
+	parse(f);
+	fclose(f);
+	return 0;
+}
diff --git a/drivers/staging/usbip/userspace/libsrc/names.h b/drivers/staging/usbip/userspace/libsrc/names.h
new file mode 100644
index 00000000..68092651
--- /dev/null
+++ b/drivers/staging/usbip/userspace/libsrc/names.h
@@ -0,0 +1,41 @@
+/*
+ *      names.h  --  USB name database manipulation routines
+ *
+ *      Copyright (C) 1999, 2000  Thomas Sailer (sailer@ife.ee.ethz.ch)
+ *
+ *      This program is free software; you can redistribute it and/or modify
+ *      it under the terms of the GNU General Public License as published by
+ *      the Free Software Foundation; either version 2 of the License, or
+ *      (at your option) any later version.
+ *
+ *      This program is distributed in the hope that it will be useful,
+ *      but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *      GNU General Public License for more details.
+ *
+ *      You should have received a copy of the GNU General Public License
+ *      along with this program; if not, write to the Free Software
+ *      Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ *
+ *
+ *	Copyright (C) 2005 Takahiro Hirofuchi
+ *	       - names_free() is added.
+ */
+
+#ifndef _NAMES_H
+#define _NAMES_H
+
+#include <sys/types.h>
+
+/* used by usbip_common.c */
+extern const char *names_vendor(u_int16_t vendorid);
+extern const char *names_product(u_int16_t vendorid, u_int16_t productid);
+extern const char *names_class(u_int8_t classid);
+extern const char *names_subclass(u_int8_t classid, u_int8_t subclassid);
+extern const char *names_protocol(u_int8_t classid, u_int8_t subclassid,
+				  u_int8_t protocolid);
+extern int  names_init(char *n);
+extern void names_free(void);
+
+#endif /* _NAMES_H */
diff --git a/drivers/staging/usbip/userspace/libsrc/usbip_common.c b/drivers/staging/usbip/userspace/libsrc/usbip_common.c
new file mode 100644
index 00000000..17e08e02
--- /dev/null
+++ b/drivers/staging/usbip/userspace/libsrc/usbip_common.c
@@ -0,0 +1,292 @@
+/*
+ * Copyright (C) 2005-2007 Takahiro Hirofuchi
+ */
+
+#include "usbip_common.h"
+#include "names.h"
+
+#undef  PROGNAME
+#define PROGNAME "libusbip"
+
+int usbip_use_syslog;
+int usbip_use_stderr;
+int usbip_use_debug;
+
+struct speed_string {
+	int num;
+	char *speed;
+	char *desc;
+};
+
+static const struct speed_string speed_strings[] = {
+	{ USB_SPEED_UNKNOWN, "unknown", "Unknown Speed"},
+	{ USB_SPEED_LOW,  "1.5", "Low Speed(1.5Mbps)"  },
+	{ USB_SPEED_FULL, "12",  "Full Speed(12Mbps)" },
+	{ USB_SPEED_HIGH, "480", "High Speed(480Mbps)" },
+	{ 0, NULL, NULL }
+};
+
+struct portst_string {
+	int num;
+	char *desc;
+};
+
+static struct portst_string portst_strings[] = {
+	{ SDEV_ST_AVAILABLE,	"Device Available" },
+	{ SDEV_ST_USED,		"Device in Use" },
+	{ SDEV_ST_ERROR,	"Device Error"},
+	{ VDEV_ST_NULL,		"Port Available"},
+	{ VDEV_ST_NOTASSIGNED,	"Port Initializing"},
+	{ VDEV_ST_USED,		"Port in Use"},
+	{ VDEV_ST_ERROR,	"Port Error"},
+	{ 0, NULL}
+};
+
+const char *usbip_status_string(int32_t status)
+{
+	for (int i = 0; portst_strings[i].desc != NULL; i++)
+		if (portst_strings[i].num == status)
+			return portst_strings[i].desc;
+
+	return "Unknown Status";
+}
+
+const char *usbip_speed_string(int num)
+{
+	for (int i = 0; speed_strings[i].speed != NULL; i++)
+		if (speed_strings[i].num == num)
+			return speed_strings[i].desc;
+
+	return "Unknown Speed";
+}
+
+
+#define DBG_UDEV_INTEGER(name)\
+	dbg("%-20s = %x", to_string(name), (int) udev->name)
+
+#define DBG_UINF_INTEGER(name)\
+	dbg("%-20s = %x", to_string(name), (int) uinf->name)
+
+void dump_usb_interface(struct usbip_usb_interface *uinf)
+{
+	char buff[100];
+	usbip_names_get_class(buff, sizeof(buff),
+			uinf->bInterfaceClass,
+			uinf->bInterfaceSubClass,
+			uinf->bInterfaceProtocol);
+	dbg("%-20s = %s", "Interface(C/SC/P)", buff);
+}
+
+void dump_usb_device(struct usbip_usb_device *udev)
+{
+	char buff[100];
+
+
+	dbg("%-20s = %s", "path",  udev->path);
+	dbg("%-20s = %s", "busid", udev->busid);
+
+	usbip_names_get_class(buff, sizeof(buff),
+			udev->bDeviceClass,
+			udev->bDeviceSubClass,
+			udev->bDeviceProtocol);
+	dbg("%-20s = %s", "Device(C/SC/P)", buff);
+
+	DBG_UDEV_INTEGER(bcdDevice);
+
+	usbip_names_get_product(buff, sizeof(buff),
+			udev->idVendor,
+			udev->idProduct);
+	dbg("%-20s = %s", "Vendor/Product", buff);
+
+	DBG_UDEV_INTEGER(bNumConfigurations);
+	DBG_UDEV_INTEGER(bNumInterfaces);
+
+	dbg("%-20s = %s", "speed",
+			usbip_speed_string(udev->speed));
+
+	DBG_UDEV_INTEGER(busnum);
+	DBG_UDEV_INTEGER(devnum);
+}
+
+
+int read_attr_value(struct sysfs_device *dev, const char *name,
+		    const char *format)
+{
+	char attrpath[SYSFS_PATH_MAX];
+	struct sysfs_attribute *attr;
+	int num = 0;
+	int ret;
+
+	snprintf(attrpath, sizeof(attrpath), "%s/%s", dev->path, name);
+
+	attr = sysfs_open_attribute(attrpath);
+	if (!attr) {
+		dbg("sysfs_open_attribute failed: %s", attrpath);
+		return 0;
+	}
+
+	ret = sysfs_read_attribute(attr);
+	if (ret < 0) {
+		dbg("sysfs_read_attribute failed");
+		goto err;
+	}
+
+	ret = sscanf(attr->value, format, &num);
+	if (ret < 1) {
+		dbg("sscanf failed");
+		goto err;
+	}
+
+err:
+	sysfs_close_attribute(attr);
+
+	return num;
+}
+
+
+int read_attr_speed(struct sysfs_device *dev)
+{
+	char attrpath[SYSFS_PATH_MAX];
+	struct sysfs_attribute *attr;
+	char speed[100];
+	int ret;
+
+	snprintf(attrpath, sizeof(attrpath), "%s/%s", dev->path, "speed");
+
+	attr = sysfs_open_attribute(attrpath);
+	if (!attr) {
+		dbg("sysfs_open_attribute failed: %s", attrpath);
+		return 0;
+	}
+
+	ret = sysfs_read_attribute(attr);
+	if (ret < 0) {
+		dbg("sysfs_read_attribute failed");
+		goto err;
+	}
+
+	ret = sscanf(attr->value, "%s\n", speed);
+	if (ret < 1) {
+		dbg("sscanf failed");
+		goto err;
+	}
+err:
+	sysfs_close_attribute(attr);
+
+	for (int i = 0; speed_strings[i].speed != NULL; i++) {
+		if (!strcmp(speed, speed_strings[i].speed))
+			return speed_strings[i].num;
+	}
+
+	return USB_SPEED_UNKNOWN;
+}
+
+#define READ_ATTR(object, type, dev, name, format)			      \
+	do {								      \
+		(object)->name = (type) read_attr_value(dev, to_string(name), \
+							format);	      \
+	} while (0)
+
+
+int read_usb_device(struct sysfs_device *sdev, struct usbip_usb_device *udev)
+{
+	uint32_t busnum, devnum;
+
+	READ_ATTR(udev, uint8_t,  sdev, bDeviceClass,		"%02x\n");
+	READ_ATTR(udev, uint8_t,  sdev, bDeviceSubClass,	"%02x\n");
+	READ_ATTR(udev, uint8_t,  sdev, bDeviceProtocol,	"%02x\n");
+
+	READ_ATTR(udev, uint16_t, sdev, idVendor,		"%04x\n");
+	READ_ATTR(udev, uint16_t, sdev, idProduct,		"%04x\n");
+	READ_ATTR(udev, uint16_t, sdev, bcdDevice,		"%04x\n");
+
+	READ_ATTR(udev, uint8_t,  sdev, bConfigurationValue,	"%02x\n");
+	READ_ATTR(udev, uint8_t,  sdev, bNumConfigurations,	"%02x\n");
+	READ_ATTR(udev, uint8_t,  sdev, bNumInterfaces,		"%02x\n");
+
+	READ_ATTR(udev, uint8_t,  sdev, devnum,			"%d\n");
+	udev->speed = read_attr_speed(sdev);
+
+	strncpy(udev->path,  sdev->path,  SYSFS_PATH_MAX);
+	strncpy(udev->busid, sdev->name, SYSFS_BUS_ID_SIZE);
+
+	sscanf(sdev->name, "%u-%u", &busnum, &devnum);
+	udev->busnum = busnum;
+
+	return 0;
+}
+
+int read_usb_interface(struct usbip_usb_device *udev, int i,
+		       struct usbip_usb_interface *uinf)
+{
+	char busid[SYSFS_BUS_ID_SIZE];
+	struct sysfs_device *sif;
+
+	sprintf(busid, "%s:%d.%d", udev->busid, udev->bConfigurationValue, i);
+
+	sif = sysfs_open_device("usb", busid);
+	if (!sif) {
+		dbg("sysfs_open_device(\"usb\", \"%s\") failed", busid);
+		return -1;
+	}
+
+	READ_ATTR(uinf, uint8_t,  sif, bInterfaceClass,		"%02x\n");
+	READ_ATTR(uinf, uint8_t,  sif, bInterfaceSubClass,	"%02x\n");
+	READ_ATTR(uinf, uint8_t,  sif, bInterfaceProtocol,	"%02x\n");
+
+	sysfs_close_device(sif);
+
+	return 0;
+}
+
+int usbip_names_init(char *f)
+{
+	return names_init(f);
+}
+
+void usbip_names_free()
+{
+	names_free();
+}
+
+void usbip_names_get_product(char *buff, size_t size, uint16_t vendor,
+			     uint16_t product)
+{
+	const char *prod, *vend;
+
+	prod = names_product(vendor, product);
+	if (!prod)
+		prod = "unknown product";
+
+
+	vend = names_vendor(vendor);
+	if (!vend)
+		vend = "unknown vendor";
+
+	snprintf(buff, size, "%s : %s (%04x:%04x)", vend, prod, vendor, product);
+}
+
+void usbip_names_get_class(char *buff, size_t size, uint8_t class,
+			   uint8_t subclass, uint8_t protocol)
+{
+	const char *c, *s, *p;
+
+	if (class == 0 && subclass == 0 && protocol == 0) {
+		snprintf(buff, size, "(Defined at Interface level) (%02x/%02x/%02x)", class, subclass, protocol);
+		return;
+	}
+
+	p = names_protocol(class, subclass, protocol);
+	if (!p)
+		p = "unknown protocol";
+
+	s = names_subclass(class, subclass);
+	if (!s)
+		s = "unknown subclass";
+
+	c = names_class(class);
+	if (!c)
+		c = "unknown class";
+
+	snprintf(buff, size, "%s / %s / %s (%02x/%02x/%02x)", c, s, p, class, subclass, protocol);
+}
diff --git a/drivers/staging/usbip/userspace/libsrc/usbip_common.h b/drivers/staging/usbip/userspace/libsrc/usbip_common.h
new file mode 100644
index 00000000..938ad1c3
--- /dev/null
+++ b/drivers/staging/usbip/userspace/libsrc/usbip_common.h
@@ -0,0 +1,150 @@
+/*
+ * Copyright (C) 2005-2007 Takahiro Hirofuchi
+ */
+
+#ifndef __USBIP_COMMON_H
+#define __USBIP_COMMON_H
+
+#include <sysfs/libsysfs.h>
+
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <syslog.h>
+#include <unistd.h>
+
+#ifndef USBIDS_FILE
+#define USBIDS_FILE "/usr/share/hwdata/usb.ids"
+#endif
+
+#ifndef VHCI_STATE_PATH
+#define VHCI_STATE_PATH "/var/run/vhci_hcd"
+#endif
+
+/* kernel module names */
+#define USBIP_CORE_MOD_NAME	"usbip-core"
+#define USBIP_HOST_DRV_NAME	"usbip-host"
+#define USBIP_VHCI_DRV_NAME	"vhci_hcd"
+
+extern int usbip_use_syslog;
+extern int usbip_use_stderr;
+extern int usbip_use_debug ;
+
+#define PROGNAME "usbip"
+
+#define pr_fmt(fmt)	"%s: %s: " fmt "\n", PROGNAME
+#define dbg_fmt(fmt)	pr_fmt("%s:%d:[%s] " fmt), "debug",	\
+		        __FILE__, __LINE__, __FUNCTION__
+
+#define err(fmt, args...)						\
+	do {								\
+		if (usbip_use_syslog) {					\
+			syslog(LOG_ERR, pr_fmt(fmt), "error", ##args);	\
+		}							\
+		if (usbip_use_stderr) {					\
+			fprintf(stderr, pr_fmt(fmt), "error", ##args);	\
+		}							\
+	} while (0)
+
+#define info(fmt, args...)						\
+	do {								\
+		if (usbip_use_syslog) {					\
+			syslog(LOG_INFO, pr_fmt(fmt), "info", ##args);	\
+		}							\
+		if (usbip_use_stderr) {					\
+			fprintf(stderr, pr_fmt(fmt), "info", ##args);	\
+		}							\
+	} while (0)
+
+#define dbg(fmt, args...)						\
+	do {								\
+	if (usbip_use_debug) {						\
+		if (usbip_use_syslog) {					\
+			syslog(LOG_DEBUG, dbg_fmt(fmt), ##args);	\
+		}							\
+		if (usbip_use_stderr) {					\
+			fprintf(stderr, dbg_fmt(fmt), ##args);		\
+		}							\
+	}								\
+	} while (0)
+
+#define BUG()						\
+	do {						\
+		err("sorry, it's a bug!");		\
+		abort();				\
+	} while (0)
+
+enum usb_device_speed {
+	USB_SPEED_UNKNOWN = 0,                  /* enumerating */
+	USB_SPEED_LOW, USB_SPEED_FULL,          /* usb 1.1 */
+	USB_SPEED_HIGH,                         /* usb 2.0 */
+	USB_SPEED_VARIABLE                      /* wireless (usb 2.5) */
+};
+
+/* FIXME: how to sync with drivers/usbip_common.h ? */
+enum usbip_device_status {
+	/* sdev is available. */
+	SDEV_ST_AVAILABLE = 0x01,
+	/* sdev is now used. */
+	SDEV_ST_USED,
+	/* sdev is unusable because of a fatal error. */
+	SDEV_ST_ERROR,
+
+	/* vdev does not connect a remote device. */
+	VDEV_ST_NULL,
+	/* vdev is used, but the USB address is not assigned yet */
+	VDEV_ST_NOTASSIGNED,
+	VDEV_ST_USED,
+	VDEV_ST_ERROR
+};
+
+struct usbip_usb_interface {
+	uint8_t bInterfaceClass;
+	uint8_t bInterfaceSubClass;
+	uint8_t bInterfaceProtocol;
+	uint8_t padding;	/* alignment */
+} __attribute__((packed));
+
+struct usbip_usb_device {
+	char path[SYSFS_PATH_MAX];
+	char busid[SYSFS_BUS_ID_SIZE];
+
+	uint32_t busnum;
+	uint32_t devnum;
+	uint32_t speed;
+
+	uint16_t idVendor;
+	uint16_t idProduct;
+	uint16_t bcdDevice;
+
+	uint8_t bDeviceClass;
+	uint8_t bDeviceSubClass;
+	uint8_t bDeviceProtocol;
+	uint8_t bConfigurationValue;
+	uint8_t bNumConfigurations;
+	uint8_t bNumInterfaces;
+} __attribute__((packed));
+
+#define to_string(s)	#s
+
+void dump_usb_interface(struct usbip_usb_interface *);
+void dump_usb_device(struct usbip_usb_device *);
+int read_usb_device(struct sysfs_device *sdev, struct usbip_usb_device *udev);
+int read_attr_value(struct sysfs_device *dev, const char *name,
+		    const char *format);
+int read_usb_interface(struct usbip_usb_device *udev, int i,
+		       struct usbip_usb_interface *uinf);
+
+const char *usbip_speed_string(int num);
+const char *usbip_status_string(int32_t status);
+
+int usbip_names_init(char *);
+void usbip_names_free(void);
+void usbip_names_get_product(char *buff, size_t size, uint16_t vendor,
+			     uint16_t product);
+void usbip_names_get_class(char *buff, size_t size, uint8_t class,
+			   uint8_t subclass, uint8_t protocol);
+
+#endif /* __USBIP_COMMON_H */
diff --git a/drivers/staging/usbip/userspace/libsrc/usbip_host_driver.c b/drivers/staging/usbip/userspace/libsrc/usbip_host_driver.c
new file mode 100644
index 00000000..71a449cf
--- /dev/null
+++ b/drivers/staging/usbip/userspace/libsrc/usbip_host_driver.c
@@ -0,0 +1,401 @@
+/*
+ * Copyright (C) 2011 matt mooney <mfm@muteddisk.com>
+ *               2005-2007 Takahiro Hirofuchi
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include <errno.h>
+#include <unistd.h>
+
+#include "usbip_common.h"
+#include "usbip_host_driver.h"
+
+#undef  PROGNAME
+#define PROGNAME "libusbip"
+
+struct usbip_host_driver *host_driver;
+
+#define SYSFS_OPEN_RETRIES 100
+
+/* only the first interface value is true! */
+static int32_t read_attr_usbip_status(struct usbip_usb_device *udev)
+{
+	char attrpath[SYSFS_PATH_MAX];
+	struct sysfs_attribute *attr;
+	int value = 0;
+	int rc;
+	struct stat s;
+	int retries = SYSFS_OPEN_RETRIES;
+
+	/* This access is racy!
+	 *
+	 * Just after detach, our driver removes the sysfs
+	 * files and recreates them.
+	 *
+	 * We may try and fail to open the usbip_status of
+	 * an exported device in the (short) window where
+	 * it has been removed and not yet recreated.
+	 *
+	 * This is a bug in the interface. Nothing we can do
+	 * except work around it here by polling for the sysfs
+	 * usbip_status to reappear.
+	 */
+
+	snprintf(attrpath, SYSFS_PATH_MAX, "%s/%s:%d.%d/usbip_status",
+		 udev->path, udev->busid, udev->bConfigurationValue, 0);
+
+	while (retries > 0) {
+		if (stat(attrpath, &s) == 0)
+			break;
+
+		if (errno != ENOENT) {
+			dbg("stat failed: %s", attrpath);
+			return -1;
+		}
+
+		usleep(10000); /* 10ms */
+		retries--;
+	}
+
+	if (retries == 0)
+		dbg("usbip_status not ready after %d retries",
+		    SYSFS_OPEN_RETRIES);
+	else if (retries < SYSFS_OPEN_RETRIES)
+		dbg("warning: usbip_status ready after %d retries",
+		    SYSFS_OPEN_RETRIES - retries);
+
+	attr = sysfs_open_attribute(attrpath);
+	if (!attr) {
+		dbg("sysfs_open_attribute failed: %s", attrpath);
+		return -1;
+	}
+
+	rc = sysfs_read_attribute(attr);
+	if (rc) {
+		dbg("sysfs_read_attribute failed: %s", attrpath);
+		sysfs_close_attribute(attr);
+		return -1;
+	}
+
+	value = atoi(attr->value);
+
+	sysfs_close_attribute(attr);
+
+	return value;
+}
+
+static struct usbip_exported_device *usbip_exported_device_new(char *sdevpath)
+{
+	struct usbip_exported_device *edev = NULL;
+	size_t size;
+	int i;
+
+	edev = calloc(1, sizeof(*edev));
+	if (!edev) {
+		dbg("calloc failed");
+		return NULL;
+	}
+
+	edev->sudev = sysfs_open_device_path(sdevpath);
+	if (!edev->sudev) {
+		dbg("sysfs_open_device_path failed: %s", sdevpath);
+		goto err;
+	}
+
+	read_usb_device(edev->sudev, &edev->udev);
+
+	edev->status = read_attr_usbip_status(&edev->udev);
+	if (edev->status < 0)
+		goto err;
+
+	/* reallocate buffer to include usb interface data */
+	size = sizeof(*edev) + edev->udev.bNumInterfaces *
+		sizeof(struct usbip_usb_interface);
+
+	edev = realloc(edev, size);
+	if (!edev) {
+		dbg("realloc failed");
+		goto err;
+	}
+
+	for (i = 0; i < edev->udev.bNumInterfaces; i++)
+		read_usb_interface(&edev->udev, i, &edev->uinf[i]);
+
+	return edev;
+err:
+	if (edev && edev->sudev)
+		sysfs_close_device(edev->sudev);
+	if (edev)
+		free(edev);
+
+	return NULL;
+}
+
+static int check_new(struct dlist *dlist, struct sysfs_device *target)
+{
+	struct sysfs_device *dev;
+
+	dlist_for_each_data(dlist, dev, struct sysfs_device) {
+		if (!strncmp(dev->bus_id, target->bus_id, SYSFS_BUS_ID_SIZE))
+			/* device found and is not new */
+			return 0;
+	}
+	return 1;
+}
+
+static void delete_nothing(void *unused_data)
+{
+	/*
+	 * NOTE: Do not delete anything, but the container will be deleted.
+	 */
+	(void) unused_data;
+}
+
+static int refresh_exported_devices(void)
+{
+	/* sysfs_device of usb_interface */
+	struct sysfs_device	*suintf;
+	struct dlist		*suintf_list;
+	/* sysfs_device of usb_device */
+	struct sysfs_device	*sudev;
+	struct dlist		*sudev_list;
+	struct usbip_exported_device *edev;
+
+	sudev_list = dlist_new_with_delete(sizeof(struct sysfs_device),
+					   delete_nothing);
+
+	suintf_list = sysfs_get_driver_devices(host_driver->sysfs_driver);
+	if (!suintf_list) {
+		/*
+		 * Not an error condition. There are simply no devices bound to
+		 * the driver yet.
+		 */
+		dbg("bind " USBIP_HOST_DRV_NAME ".ko to a usb device to be "
+		    "exportable!");
+		return 0;
+	}
+
+	/* collect unique USB devices (not interfaces) */
+	dlist_for_each_data(suintf_list, suintf, struct sysfs_device) {
+		/* get usb device of this usb interface */
+		sudev = sysfs_get_device_parent(suintf);
+		if (!sudev) {
+			dbg("sysfs_get_device_parent failed: %s", suintf->name);
+			continue;
+		}
+
+		if (check_new(sudev_list, sudev)) {
+			/* insert item at head of list */
+			dlist_unshift(sudev_list, sudev);
+		}
+	}
+
+	dlist_for_each_data(sudev_list, sudev, struct sysfs_device) {
+		edev = usbip_exported_device_new(sudev->path);
+		if (!edev) {
+			dbg("usbip_exported_device_new failed");
+			continue;
+		}
+
+		dlist_unshift(host_driver->edev_list, edev);
+		host_driver->ndevs++;
+	}
+
+	dlist_destroy(sudev_list);
+
+	return 0;
+}
+
+static struct sysfs_driver *open_sysfs_host_driver(void)
+{
+	char bus_type[] = "usb";
+	char sysfs_mntpath[SYSFS_PATH_MAX];
+	char host_drv_path[SYSFS_PATH_MAX];
+	struct sysfs_driver *host_drv;
+	int rc;
+
+	rc = sysfs_get_mnt_path(sysfs_mntpath, SYSFS_PATH_MAX);
+	if (rc < 0) {
+		dbg("sysfs_get_mnt_path failed");
+		return NULL;
+	}
+
+	snprintf(host_drv_path, SYSFS_PATH_MAX, "%s/%s/%s/%s/%s",
+		 sysfs_mntpath, SYSFS_BUS_NAME, bus_type, SYSFS_DRIVERS_NAME,
+		 USBIP_HOST_DRV_NAME);
+
+	host_drv = sysfs_open_driver_path(host_drv_path);
+	if (!host_drv) {
+		dbg("sysfs_open_driver_path failed");
+		return NULL;
+	}
+
+	return host_drv;
+}
+
+static void usbip_exported_device_delete(void *dev)
+{
+	struct usbip_exported_device *edev = dev;
+	sysfs_close_device(edev->sudev);
+	free(dev);
+}
+
+int usbip_host_driver_open(void)
+{
+	int rc;
+
+	host_driver = calloc(1, sizeof(*host_driver));
+	if (!host_driver) {
+		dbg("calloc failed");
+		return -1;
+	}
+
+	host_driver->ndevs = 0;
+	host_driver->edev_list =
+		dlist_new_with_delete(sizeof(struct usbip_exported_device),
+				      usbip_exported_device_delete);
+	if (!host_driver->edev_list) {
+		dbg("dlist_new_with_delete failed");
+		goto err_free_host_driver;
+	}
+
+	host_driver->sysfs_driver = open_sysfs_host_driver();
+	if (!host_driver->sysfs_driver)
+		goto err_destroy_edev_list;
+
+	rc = refresh_exported_devices();
+	if (rc < 0)
+		goto err_close_sysfs_driver;
+
+	return 0;
+
+err_close_sysfs_driver:
+	sysfs_close_driver(host_driver->sysfs_driver);
+err_destroy_edev_list:
+	dlist_destroy(host_driver->edev_list);
+err_free_host_driver:
+	free(host_driver);
+	host_driver = NULL;
+
+	return -1;
+}
+
+void usbip_host_driver_close(void)
+{
+	if (!host_driver)
+		return;
+
+	if (host_driver->edev_list)
+		dlist_destroy(host_driver->edev_list);
+	if (host_driver->sysfs_driver)
+		sysfs_close_driver(host_driver->sysfs_driver);
+
+	free(host_driver);
+	host_driver = NULL;
+}
+
+int usbip_host_refresh_device_list(void)
+{
+	int rc;
+
+	if (host_driver->edev_list)
+		dlist_destroy(host_driver->edev_list);
+
+	host_driver->ndevs = 0;
+	host_driver->edev_list =
+		dlist_new_with_delete(sizeof(struct usbip_exported_device),
+				      usbip_exported_device_delete);
+	if (!host_driver->edev_list) {
+		dbg("dlist_new_with_delete failed");
+		return -1;
+	}
+
+	rc = refresh_exported_devices();
+	if (rc < 0)
+		return -1;
+
+	return 0;
+}
+
+int usbip_host_export_device(struct usbip_exported_device *edev, int sockfd)
+{
+	char attr_name[] = "usbip_sockfd";
+	char attr_path[SYSFS_PATH_MAX];
+	struct sysfs_attribute *attr;
+	char sockfd_buff[30];
+	int ret;
+
+	if (edev->status != SDEV_ST_AVAILABLE) {
+		dbg("device not available: %s", edev->udev.busid);
+		switch (edev->status) {
+		case SDEV_ST_ERROR:
+			dbg("status SDEV_ST_ERROR");
+			break;
+		case SDEV_ST_USED:
+			dbg("status SDEV_ST_USED");
+			break;
+		default:
+			dbg("status unknown: 0x%x", edev->status);
+		}
+		return -1;
+	}
+
+	/* only the first interface is true */
+	snprintf(attr_path, sizeof(attr_path), "%s/%s:%d.%d/%s",
+		 edev->udev.path, edev->udev.busid,
+		 edev->udev.bConfigurationValue, 0, attr_name);
+
+	attr = sysfs_open_attribute(attr_path);
+	if (!attr) {
+		dbg("sysfs_open_attribute failed: %s", attr_path);
+		return -1;
+	}
+
+	snprintf(sockfd_buff, sizeof(sockfd_buff), "%d\n", sockfd);
+	dbg("write: %s", sockfd_buff);
+
+	ret = sysfs_write_attribute(attr, sockfd_buff, strlen(sockfd_buff));
+	if (ret < 0) {
+		dbg("sysfs_write_attribute failed: sockfd %s to %s",
+		    sockfd_buff, attr_path);
+		goto err_write_sockfd;
+	}
+
+	dbg("connect: %s", edev->udev.busid);
+
+err_write_sockfd:
+	sysfs_close_attribute(attr);
+
+	return ret;
+}
+
+struct usbip_exported_device *usbip_host_get_device(int num)
+{
+	struct usbip_exported_device *edev;
+	struct dlist *dlist = host_driver->edev_list;
+	int cnt = 0;
+
+	dlist_for_each_data(dlist, edev, struct usbip_exported_device) {
+		if (num == cnt)
+			return edev;
+		else
+			cnt++;
+	}
+
+	return NULL;
+}
diff --git a/drivers/staging/usbip/userspace/libsrc/usbip_host_driver.h b/drivers/staging/usbip/userspace/libsrc/usbip_host_driver.h
new file mode 100644
index 00000000..34fd14cb
--- /dev/null
+++ b/drivers/staging/usbip/userspace/libsrc/usbip_host_driver.h
@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2011 matt mooney <mfm@muteddisk.com>
+ *               2005-2007 Takahiro Hirofuchi
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __USBIP_HOST_DRIVER_H
+#define __USBIP_HOST_DRIVER_H
+
+#include <stdint.h>
+#include "usbip_common.h"
+
+struct usbip_host_driver {
+	int ndevs;
+	struct sysfs_driver *sysfs_driver;
+	/* list of exported device */
+	struct dlist *edev_list;
+};
+
+struct usbip_exported_device {
+	struct sysfs_device *sudev;
+	int32_t status;
+	struct usbip_usb_device udev;
+	struct usbip_usb_interface uinf[];
+};
+
+extern struct usbip_host_driver *host_driver;
+
+int usbip_host_driver_open(void);
+void usbip_host_driver_close(void);
+
+int usbip_host_refresh_device_list(void);
+int usbip_host_export_device(struct usbip_exported_device *edev, int sockfd);
+struct usbip_exported_device *usbip_host_get_device(int num);
+
+#endif /* __USBIP_HOST_DRIVER_H */
diff --git a/drivers/staging/usbip/userspace/libsrc/vhci_driver.c b/drivers/staging/usbip/userspace/libsrc/vhci_driver.c
new file mode 100644
index 00000000..25e62e9f
--- /dev/null
+++ b/drivers/staging/usbip/userspace/libsrc/vhci_driver.c
@@ -0,0 +1,537 @@
+/*
+ * Copyright (C) 2005-2007 Takahiro Hirofuchi
+ */
+
+#include "usbip_common.h"
+#include "vhci_driver.h"
+
+#undef  PROGNAME
+#define PROGNAME "libusbip"
+
+struct usbip_vhci_driver *vhci_driver;
+
+static struct usbip_imported_device *
+imported_device_init(struct usbip_imported_device *idev, char *busid)
+{
+	struct sysfs_device *sudev;
+
+	sudev = sysfs_open_device("usb", busid);
+	if (!sudev) {
+		dbg("sysfs_open_device failed: %s", busid);
+		goto err;
+	}
+	read_usb_device(sudev, &idev->udev);
+	sysfs_close_device(sudev);
+
+	/* add class devices of this imported device */
+	struct usbip_class_device *cdev;
+	dlist_for_each_data(vhci_driver->cdev_list, cdev,
+			    struct usbip_class_device) {
+		if (!strncmp(cdev->dev_path, idev->udev.path,
+			     strlen(idev->udev.path))) {
+			struct usbip_class_device *new_cdev;
+			/*
+			 * alloc and copy because dlist is linked
+			 * from only one list
+			 */
+			new_cdev = calloc(1, sizeof(*new_cdev));
+			if (!new_cdev)
+				goto err;
+
+			memcpy(new_cdev, cdev, sizeof(*new_cdev));
+			dlist_unshift(idev->cdev_list, (void *) new_cdev);
+		}
+	}
+
+	return idev;
+
+err:
+	return NULL;
+}
+
+
+
+static int parse_status(char *value)
+{
+	int ret = 0;
+	char *c;
+
+
+	for (int i = 0; i < vhci_driver->nports; i++)
+		memset(&vhci_driver->idev[i], 0, sizeof(vhci_driver->idev[i]));
+
+
+	/* skip a header line */
+	c = strchr(value, '\n');
+	if (!c)
+		return -1;
+	c++;
+
+	while (*c != '\0') {
+		int port, status, speed, devid;
+		unsigned long socket;
+		char lbusid[SYSFS_BUS_ID_SIZE];
+
+		ret = sscanf(c, "%d %d %d %x %lx %s\n",
+				&port, &status, &speed,
+				&devid, &socket, lbusid);
+
+		if (ret < 5) {
+			dbg("sscanf failed: %d", ret);
+			BUG();
+		}
+
+		dbg("port %d status %d speed %d devid %x",
+				port, status, speed, devid);
+		dbg("socket %lx lbusid %s", socket, lbusid);
+
+
+		/* if a device is connected, look at it */
+		{
+			struct usbip_imported_device *idev = &vhci_driver->idev[port];
+
+			idev->port	= port;
+			idev->status	= status;
+
+			idev->devid	= devid;
+
+			idev->busnum	= (devid >> 16);
+			idev->devnum	= (devid & 0x0000ffff);
+
+			idev->cdev_list = dlist_new(sizeof(struct usbip_class_device));
+			if (!idev->cdev_list) {
+				dbg("dlist_new failed");
+				return -1;
+			}
+
+			if (idev->status != VDEV_ST_NULL
+			    && idev->status != VDEV_ST_NOTASSIGNED) {
+				idev = imported_device_init(idev, lbusid);
+				if (!idev) {
+					dbg("imported_device_init failed");
+					return -1;
+				}
+			}
+		}
+
+
+		/* go to the next line */
+		c = strchr(c, '\n');
+		if (!c)
+			break;
+		c++;
+	}
+
+	dbg("exit");
+
+	return 0;
+}
+
+
+static int check_usbip_device(struct sysfs_class_device *cdev)
+{
+	/* /sys/class/video4linux/video0/device */
+	char class_path[SYSFS_PATH_MAX];
+	/* /sys/devices/platform/vhci_hcd/usb6/6-1:1.1 */
+	char dev_path[SYSFS_PATH_MAX];
+	int ret;
+	struct usbip_class_device *usbip_cdev;
+
+	snprintf(class_path, sizeof(class_path), "%s/device", cdev->path);
+
+	ret = sysfs_get_link(class_path, dev_path, sizeof(dev_path));
+	if (ret == 0) {
+		if (!strncmp(dev_path, vhci_driver->hc_device->path,
+			     strlen(vhci_driver->hc_device->path))) {
+			/* found usbip device */
+			usbip_cdev = calloc(1, sizeof(*usbip_cdev));
+			if (!usbip_cdev) {
+				dbg("calloc failed");
+				return -1;
+			}
+			dlist_unshift(vhci_driver->cdev_list, usbip_cdev);
+			strncpy(usbip_cdev->class_path, class_path,
+				sizeof(usbip_cdev->class_path));
+			strncpy(usbip_cdev->dev_path, dev_path,
+				sizeof(usbip_cdev->dev_path));
+			dbg("found: %s %s", class_path, dev_path);
+		}
+	}
+
+	return 0;
+}
+
+
+static int search_class_for_usbip_device(char *cname)
+{
+	struct sysfs_class *class;
+	struct dlist *cdev_list;
+	struct sysfs_class_device *cdev;
+	int ret = 0;
+
+	class = sysfs_open_class(cname);
+	if (!class) {
+		dbg("sysfs_open_class failed");
+		return -1;
+	}
+
+	dbg("class: %s", class->name);
+
+	cdev_list = sysfs_get_class_devices(class);
+	if (!cdev_list)
+		/* nothing */
+		goto out;
+
+	dlist_for_each_data(cdev_list, cdev, struct sysfs_class_device) {
+		dbg("cdev: %s", cdev->name);
+		ret = check_usbip_device(cdev);
+		if (ret < 0)
+			goto out;
+	}
+
+out:
+	sysfs_close_class(class);
+
+	return ret;
+}
+
+
+static int refresh_class_device_list(void)
+{
+	int ret;
+	struct dlist *cname_list;
+	char *cname;
+	char sysfs_mntpath[SYSFS_PATH_MAX];
+	char class_path[SYSFS_PATH_MAX];
+
+	ret = sysfs_get_mnt_path(sysfs_mntpath, SYSFS_PATH_MAX);
+	if (ret < 0) {
+		dbg("sysfs_get_mnt_path failed");
+		return -1;
+	}
+
+	snprintf(class_path, sizeof(class_path), "%s/%s", sysfs_mntpath,
+		 SYSFS_CLASS_NAME);
+
+	/* search under /sys/class */
+	cname_list = sysfs_open_directory_list(class_path);
+	if (!cname_list) {
+		dbg("sysfs_open_directory failed");
+		return -1;
+	}
+
+	dlist_for_each_data(cname_list, cname, char) {
+		ret = search_class_for_usbip_device(cname);
+		if (ret < 0) {
+			sysfs_close_list(cname_list);
+			return -1;
+		}
+	}
+
+	sysfs_close_list(cname_list);
+
+	/* seach under /sys/block */
+	ret = search_class_for_usbip_device(SYSFS_BLOCK_NAME);
+	if (ret < 0)
+		return -1;
+
+	return 0;
+}
+
+
+static int refresh_imported_device_list(void)
+{
+	struct sysfs_attribute *attr_status;
+
+
+	attr_status = sysfs_get_device_attr(vhci_driver->hc_device, "status");
+	if (!attr_status) {
+		dbg("sysfs_get_device_attr(\"status\") failed: %s",
+		    vhci_driver->hc_device->name);
+		return -1;
+	}
+
+	dbg("name: %s  path: %s  len: %d  method: %d  value: %s",
+	    attr_status->name, attr_status->path, attr_status->len,
+	    attr_status->method, attr_status->value);
+
+	return parse_status(attr_status->value);
+}
+
+static int get_nports(void)
+{
+	char *c;
+	int nports = 0;
+	struct sysfs_attribute *attr_status;
+
+	attr_status = sysfs_get_device_attr(vhci_driver->hc_device, "status");
+	if (!attr_status) {
+		dbg("sysfs_get_device_attr(\"status\") failed: %s",
+		    vhci_driver->hc_device->name);
+		return -1;
+	}
+
+	dbg("name: %s  path: %s  len: %d  method: %d  value: %s",
+	    attr_status->name, attr_status->path, attr_status->len,
+	    attr_status->method, attr_status->value);
+
+	/* skip a header line */
+	c = strchr(attr_status->value, '\n');
+	if (!c)
+		return 0;
+	c++;
+
+	while (*c != '\0') {
+		/* go to the next line */
+		c = strchr(c, '\n');
+		if (!c)
+			return nports;
+		c++;
+		nports += 1;
+	}
+
+	return nports;
+}
+
+static int get_hc_busid(char *sysfs_mntpath, char *hc_busid)
+{
+	struct sysfs_driver *sdriver;
+	char sdriver_path[SYSFS_PATH_MAX];
+
+	struct sysfs_device *hc_dev;
+	struct dlist *hc_devs;
+
+	int found = 0;
+
+	snprintf(sdriver_path, SYSFS_PATH_MAX, "%s/%s/%s/%s/%s", sysfs_mntpath,
+	SYSFS_BUS_NAME, USBIP_VHCI_BUS_TYPE, SYSFS_DRIVERS_NAME,
+	USBIP_VHCI_DRV_NAME);
+
+	sdriver = sysfs_open_driver_path(sdriver_path);
+	if (!sdriver) {
+		dbg("sysfs_open_driver_path failed: %s", sdriver_path);
+		dbg("make sure " USBIP_CORE_MOD_NAME ".ko and "
+		    USBIP_VHCI_DRV_NAME ".ko are loaded!");
+		return -1;
+	}
+
+	hc_devs = sysfs_get_driver_devices(sdriver);
+	if (!hc_devs) {
+		dbg("sysfs_get_driver failed");
+		goto err;
+	}
+
+	/* assume only one vhci_hcd */
+	dlist_for_each_data(hc_devs, hc_dev, struct sysfs_device) {
+		strncpy(hc_busid, hc_dev->bus_id, SYSFS_BUS_ID_SIZE);
+		found = 1;
+	}
+
+err:
+	sysfs_close_driver(sdriver);
+
+	if (found)
+		return 0;
+
+	dbg("%s not found", hc_busid);
+	return -1;
+}
+
+
+/* ---------------------------------------------------------------------- */
+
+int usbip_vhci_driver_open(void)
+{
+	int ret;
+	char hc_busid[SYSFS_BUS_ID_SIZE];
+
+	vhci_driver = (struct usbip_vhci_driver *) calloc(1, sizeof(*vhci_driver));
+	if (!vhci_driver) {
+		dbg("calloc failed");
+		return -1;
+	}
+
+	ret = sysfs_get_mnt_path(vhci_driver->sysfs_mntpath, SYSFS_PATH_MAX);
+	if (ret < 0) {
+		dbg("sysfs_get_mnt_path failed");
+		goto err;
+	}
+
+	ret = get_hc_busid(vhci_driver->sysfs_mntpath, hc_busid);
+	if (ret < 0)
+		goto err;
+
+	/* will be freed in usbip_driver_close() */
+	vhci_driver->hc_device = sysfs_open_device(USBIP_VHCI_BUS_TYPE,
+						   hc_busid);
+	if (!vhci_driver->hc_device) {
+		dbg("sysfs_open_device failed");
+		goto err;
+	}
+
+	vhci_driver->nports = get_nports();
+
+	dbg("available ports: %d", vhci_driver->nports);
+
+	vhci_driver->cdev_list = dlist_new(sizeof(struct usbip_class_device));
+	if (!vhci_driver->cdev_list)
+		goto err;
+
+	if (refresh_class_device_list())
+		goto err;
+
+	if (refresh_imported_device_list())
+		goto err;
+
+
+	return 0;
+
+
+err:
+	if (vhci_driver->cdev_list)
+		dlist_destroy(vhci_driver->cdev_list);
+	if (vhci_driver->hc_device)
+		sysfs_close_device(vhci_driver->hc_device);
+	if (vhci_driver)
+		free(vhci_driver);
+
+	vhci_driver = NULL;
+	return -1;
+}
+
+
+void usbip_vhci_driver_close()
+{
+	if (!vhci_driver)
+		return;
+
+	if (vhci_driver->cdev_list)
+		dlist_destroy(vhci_driver->cdev_list);
+
+	for (int i = 0; i < vhci_driver->nports; i++) {
+		if (vhci_driver->idev[i].cdev_list)
+			dlist_destroy(vhci_driver->idev[i].cdev_list);
+	}
+
+	if (vhci_driver->hc_device)
+		sysfs_close_device(vhci_driver->hc_device);
+	free(vhci_driver);
+
+	vhci_driver = NULL;
+}
+
+
+int usbip_vhci_refresh_device_list(void)
+{
+	if (vhci_driver->cdev_list)
+		dlist_destroy(vhci_driver->cdev_list);
+
+
+	for (int i = 0; i < vhci_driver->nports; i++) {
+		if (vhci_driver->idev[i].cdev_list)
+			dlist_destroy(vhci_driver->idev[i].cdev_list);
+	}
+
+	vhci_driver->cdev_list = dlist_new(sizeof(struct usbip_class_device));
+	if (!vhci_driver->cdev_list)
+		goto err;
+
+	if (refresh_class_device_list())
+		goto err;
+
+	if (refresh_imported_device_list())
+		goto err;
+
+	return 0;
+err:
+	if (vhci_driver->cdev_list)
+		dlist_destroy(vhci_driver->cdev_list);
+
+	for (int i = 0; i < vhci_driver->nports; i++) {
+		if (vhci_driver->idev[i].cdev_list)
+			dlist_destroy(vhci_driver->idev[i].cdev_list);
+	}
+
+	dbg("failed to refresh device list");
+	return -1;
+}
+
+
+int usbip_vhci_get_free_port(void)
+{
+	for (int i = 0; i < vhci_driver->nports; i++) {
+		if (vhci_driver->idev[i].status == VDEV_ST_NULL)
+			return i;
+	}
+
+	return -1;
+}
+
+int usbip_vhci_attach_device2(uint8_t port, int sockfd, uint32_t devid,
+		uint32_t speed) {
+	struct sysfs_attribute *attr_attach;
+	char buff[200]; /* what size should be ? */
+	int ret;
+
+	attr_attach = sysfs_get_device_attr(vhci_driver->hc_device, "attach");
+	if (!attr_attach) {
+		dbg("sysfs_get_device_attr(\"attach\") failed: %s",
+		    vhci_driver->hc_device->name);
+		return -1;
+	}
+
+	snprintf(buff, sizeof(buff), "%u %u %u %u",
+			port, sockfd, devid, speed);
+	dbg("writing: %s", buff);
+
+	ret = sysfs_write_attribute(attr_attach, buff, strlen(buff));
+	if (ret < 0) {
+		dbg("sysfs_write_attribute failed");
+		return -1;
+	}
+
+	dbg("attached port: %d", port);
+
+	return 0;
+}
+
+static unsigned long get_devid(uint8_t busnum, uint8_t devnum)
+{
+	return (busnum << 16) | devnum;
+}
+
+/* will be removed */
+int usbip_vhci_attach_device(uint8_t port, int sockfd, uint8_t busnum,
+		uint8_t devnum, uint32_t speed)
+{
+	int devid = get_devid(busnum, devnum);
+
+	return usbip_vhci_attach_device2(port, sockfd, devid, speed);
+}
+
+int usbip_vhci_detach_device(uint8_t port)
+{
+	struct sysfs_attribute  *attr_detach;
+	char buff[200]; /* what size should be ? */
+	int ret;
+
+	attr_detach = sysfs_get_device_attr(vhci_driver->hc_device, "detach");
+	if (!attr_detach) {
+		dbg("sysfs_get_device_attr(\"detach\") failed: %s",
+		    vhci_driver->hc_device->name);
+		return -1;
+	}
+
+	snprintf(buff, sizeof(buff), "%u", port);
+	dbg("writing: %s", buff);
+
+	ret = sysfs_write_attribute(attr_detach, buff, strlen(buff));
+	if (ret < 0) {
+		dbg("sysfs_write_attribute failed");
+		return -1;
+	}
+
+	dbg("detached port: %d", port);
+
+	return 0;
+}
diff --git a/drivers/staging/usbip/userspace/libsrc/vhci_driver.h b/drivers/staging/usbip/userspace/libsrc/vhci_driver.h
new file mode 100644
index 00000000..89949aa7
--- /dev/null
+++ b/drivers/staging/usbip/userspace/libsrc/vhci_driver.h
@@ -0,0 +1,67 @@
+/*
+ * Copyright (C) 2005-2007 Takahiro Hirofuchi
+ */
+
+#ifndef __VHCI_DRIVER_H
+#define __VHCI_DRIVER_H
+
+#include <sysfs/libsysfs.h>
+#include <stdint.h>
+
+#include "usbip_common.h"
+
+#define USBIP_VHCI_BUS_TYPE "platform"
+#define MAXNPORT 128
+
+struct usbip_class_device {
+	char class_path[SYSFS_PATH_MAX];
+	char dev_path[SYSFS_PATH_MAX];
+};
+
+struct usbip_imported_device {
+	uint8_t port;
+	uint32_t status;
+
+	uint32_t devid;
+
+	uint8_t busnum;
+	uint8_t devnum;
+
+	/* usbip_class_device list */
+	struct dlist *cdev_list;
+	struct usbip_usb_device udev;
+};
+
+struct usbip_vhci_driver {
+	char sysfs_mntpath[SYSFS_PATH_MAX];
+
+	/* /sys/devices/platform/vhci_hcd */
+	struct sysfs_device *hc_device;
+
+	/* usbip_class_device list */
+	struct dlist *cdev_list;
+
+	int nports;
+	struct usbip_imported_device idev[MAXNPORT];
+};
+
+
+extern struct usbip_vhci_driver *vhci_driver;
+
+int usbip_vhci_driver_open(void);
+void usbip_vhci_driver_close(void);
+
+int  usbip_vhci_refresh_device_list(void);
+
+
+int usbip_vhci_get_free_port(void);
+int usbip_vhci_attach_device2(uint8_t port, int sockfd, uint32_t devid,
+		uint32_t speed);
+
+/* will be removed */
+int usbip_vhci_attach_device(uint8_t port, int sockfd, uint8_t busnum,
+		uint8_t devnum, uint32_t speed);
+
+int usbip_vhci_detach_device(uint8_t port);
+
+#endif /* __VHCI_DRIVER_H */